Backport: Possibly fix .Xresources not being loaded

Signed-off-by: AnErrupTion <anerruption@disroot.org>

.gitignore

@@ -1,3 +1,5 @@
-bin
+.idea/
-obj
+zig-cache/
+zig-out/
 valgrind.log
+.zig-cache

.gitmodules

@@ -1,12 +0,0 @@
-[submodule "sub/argoat"]
-	path = sub/argoat
-	url = https://github.com/nullgemm/argoat.git
-[submodule "sub/configator"]
-	path = sub/configator
-	url = https://github.com/nullgemm/configator.git
-[submodule "sub/dragonfail"]
-	path = sub/dragonfail
-	url = https://github.com/nullgemm/dragonfail.git
-[submodule "sub/termbox_next"]
-	path = sub/termbox_next
-	url = https://github.com/nullgemm/termbox_next.git

build.zig

@@ -0,0 +1,318 @@
+const std = @import("std");
+const builtin = @import("builtin");
+
+const min_zig_string = "0.12.0";
+const current_zig = builtin.zig_version;
+
+// Implementing zig version detection through compile time
+comptime {
+    const min_zig = std.SemanticVersion.parse(min_zig_string) catch unreachable;
+    if (current_zig.order(min_zig) == .lt) {
+        @compileError(std.fmt.comptimePrint("Your Zig version v{} does not meet the minimum build requirement of v{}", .{ current_zig, min_zig }));
+    }
+}
+
+const ly_version = std.SemanticVersion{ .major = 1, .minor = 0, .patch = 3 };
+var dest_directory: []const u8 = undefined;
+var data_directory: []const u8 = undefined;
+var exe_name: []const u8 = undefined;
+
+const ProgressNode = if (current_zig.minor == 12) *std.Progress.Node else std.Progress.Node;
+
+pub fn build(b: *std.Build) !void {
+    dest_directory = b.option([]const u8, "dest_directory", "Specify a destination directory for installation") orelse "";
+    data_directory = b.option([]const u8, "data_directory", "Specify a default data directory (default is /etc/ly). This path gets embedded into the binary") orelse "/etc/ly";
+    exe_name = b.option([]const u8, "name", "Specify installed executable file name (default is ly)") orelse "ly";
+
+    const bin_directory = try b.allocator.dupe(u8, data_directory);
+    data_directory = try std.fs.path.join(b.allocator, &[_][]const u8{ dest_directory, data_directory });
+
+    const build_options = b.addOptions();
+    build_options.addOption([]const u8, "data_directory", bin_directory);
+
+    const version_str = try getVersionStr(b, "ly", ly_version);
+
+    build_options.addOption([]const u8, "version", version_str);
+
+    const target = b.standardTargetOptions(.{});
+    const optimize = b.standardOptimizeOption(.{});
+
+    const exe = b.addExecutable(.{
+        .name = "ly",
+        .root_source_file = b.path("src/main.zig"),
+        .target = target,
+        .optimize = optimize,
+    });
+
+    const zigini = b.dependency("zigini", .{ .target = target, .optimize = optimize });
+    exe.root_module.addImport("zigini", zigini.module("zigini"));
+
+    exe.root_module.addOptions("build_options", build_options);
+
+    const clap = b.dependency("clap", .{ .target = target, .optimize = optimize });
+    exe.root_module.addImport("clap", clap.module("clap"));
+
+    exe.addIncludePath(b.path("include"));
+    exe.linkSystemLibrary("pam");
+    exe.linkSystemLibrary("xcb");
+    exe.linkLibC();
+
+    // HACK: Only fails with ReleaseSafe, so we'll override it.
+    const translate_c = b.addTranslateC(.{
+        .root_source_file = b.path("include/termbox2.h"),
+        .target = target,
+        .optimize = if (optimize == .ReleaseSafe) .ReleaseFast else optimize,
+    });
+    translate_c.defineCMacroRaw("TB_IMPL");
+    const termbox2 = translate_c.addModule("termbox2");
+    exe.root_module.addImport("termbox2", termbox2);
+
+    if (optimize == .ReleaseSafe) {
+        std.debug.print("warn: termbox2 module is being built in ReleaseFast due to a bug.\n", .{});
+    }
+
+    b.installArtifact(exe);
+
+    const run_cmd = b.addRunArtifact(exe);
+
+    run_cmd.step.dependOn(b.getInstallStep());
+
+    if (b.args) |args| run_cmd.addArgs(args);
+
+    const run_step = b.step("run", "Run the app");
+    run_step.dependOn(&run_cmd.step);
+
+    const installexe_step = b.step("installexe", "Install Ly");
+    installexe_step.makeFn = ExeInstaller(true).make;
+    installexe_step.dependOn(b.getInstallStep());
+
+    const installnoconf_step = b.step("installnoconf", "Install Ly without its configuration file");
+    installnoconf_step.makeFn = ExeInstaller(false).make;
+    installnoconf_step.dependOn(b.getInstallStep());
+
+    const installsystemd_step = b.step("installsystemd", "Install the Ly systemd service");
+    installsystemd_step.makeFn = ServiceInstaller(.Systemd).make;
+    installsystemd_step.dependOn(installexe_step);
+
+    const installopenrc_step = b.step("installopenrc", "Install the Ly openrc service");
+    installopenrc_step.makeFn = ServiceInstaller(.Openrc).make;
+    installopenrc_step.dependOn(installexe_step);
+
+    const installrunit_step = b.step("installrunit", "Install the Ly runit service");
+    installrunit_step.makeFn = ServiceInstaller(.Runit).make;
+    installrunit_step.dependOn(installexe_step);
+
+    const uninstallall_step = b.step("uninstallall", "Uninstall Ly and all services");
+    uninstallall_step.makeFn = uninstallall;
+}
+
+pub fn ExeInstaller(install_conf: bool) type {
+    return struct {
+        pub fn make(step: *std.Build.Step, progress: ProgressNode) !void {
+            _ = progress;
+            try install_ly(step.owner.allocator, install_conf);
+        }
+    };
+}
+
+const InitSystem = enum {
+    Systemd,
+    Openrc,
+    Runit,
+};
+pub fn ServiceInstaller(comptime init_system: InitSystem) type {
+    return struct {
+        pub fn make(step: *std.Build.Step, progress: ProgressNode) !void {
+            _ = progress;
+            const allocator = step.owner.allocator;
+            switch (init_system) {
+                .Openrc => {
+                    const service_path = try std.fs.path.join(allocator, &[_][]const u8{ dest_directory, "/etc/init.d" });
+                    std.fs.cwd().makePath(service_path) catch {};
+                    var service_dir = std.fs.cwd().openDir(service_path, .{}) catch unreachable;
+                    defer service_dir.close();
+
+                    try std.fs.cwd().copyFile("res/ly-openrc", service_dir, exe_name, .{ .override_mode = 0o755 });
+                },
+                .Runit => {
+                    const service_path = try std.fs.path.join(allocator, &[_][]const u8{ dest_directory, "/etc/sv/ly" });
+                    std.fs.cwd().makePath(service_path) catch {};
+                    var service_dir = std.fs.cwd().openDir(service_path, .{}) catch unreachable;
+                    defer service_dir.close();
+
+                    const supervise_path = try std.fs.path.join(allocator, &[_][]const u8{ service_path, "supervise" });
+
+                    try std.fs.cwd().copyFile("res/ly-runit-service/conf", service_dir, "conf", .{});
+                    try std.fs.cwd().copyFile("res/ly-runit-service/finish", service_dir, "finish", .{ .override_mode = 0o755 });
+                    try std.fs.cwd().copyFile("res/ly-runit-service/run", service_dir, "run", .{ .override_mode = 0o755 });
+                    try std.fs.cwd().symLink("/run/runit/supervise.ly", supervise_path, .{});
+                },
+                .Systemd => {
+                    const service_path = try std.fs.path.join(allocator, &[_][]const u8{ dest_directory, "/usr/lib/systemd/system" });
+                    std.fs.cwd().makePath(service_path) catch {};
+                    var service_dir = std.fs.cwd().openDir(service_path, .{}) catch unreachable;
+                    defer service_dir.close();
+
+                    try std.fs.cwd().copyFile("res/ly.service", service_dir, "ly.service", .{ .override_mode = 0o644 });
+                },
+            }
+        }
+    };
+}
+
+fn install_ly(allocator: std.mem.Allocator, install_config: bool) !void {
+    std.fs.cwd().makePath(data_directory) catch {
+        std.debug.print("warn: {s} already exists as a directory.\n", .{data_directory});
+    };
+
+    const lang_path = try std.fs.path.join(allocator, &[_][]const u8{ data_directory, "/lang" });
+    std.fs.cwd().makePath(lang_path) catch {
+        std.debug.print("warn: {s} already exists as a directory.\n", .{data_directory});
+    };
+
+    var current_dir = std.fs.cwd();
+
+    {
+        const exe_path = try std.fs.path.join(allocator, &[_][]const u8{ dest_directory, "/usr/bin" });
+        std.fs.cwd().makePath(exe_path) catch {
+            if (!std.mem.eql(u8, dest_directory, "")) {
+                std.debug.print("warn: {s} already exists as a directory.\n", .{exe_path});
+            }
+        };
+
+        var executable_dir = std.fs.cwd().openDir(exe_path, .{}) catch unreachable;
+        defer executable_dir.close();
+
+        try current_dir.copyFile("zig-out/bin/ly", executable_dir, exe_name, .{});
+    }
+
+    {
+        var config_dir = std.fs.cwd().openDir(data_directory, .{}) catch unreachable;
+        defer config_dir.close();
+
+        if (install_config) {
+            try current_dir.copyFile("res/config.ini", config_dir, "config.ini", .{});
+        }
+        try current_dir.copyFile("res/xsetup.sh", config_dir, "xsetup.sh", .{});
+        try current_dir.copyFile("res/wsetup.sh", config_dir, "wsetup.sh", .{});
+    }
+
+    {
+        var lang_dir = std.fs.cwd().openDir(lang_path, .{}) catch unreachable;
+        defer lang_dir.close();
+
+        try current_dir.copyFile("res/lang/cat.ini", lang_dir, "cat.ini", .{});
+        try current_dir.copyFile("res/lang/cs.ini", lang_dir, "cs.ini", .{});
+        try current_dir.copyFile("res/lang/de.ini", lang_dir, "de.ini", .{});
+        try current_dir.copyFile("res/lang/en.ini", lang_dir, "en.ini", .{});
+        try current_dir.copyFile("res/lang/es.ini", lang_dir, "es.ini", .{});
+        try current_dir.copyFile("res/lang/fr.ini", lang_dir, "fr.ini", .{});
+        try current_dir.copyFile("res/lang/it.ini", lang_dir, "it.ini", .{});
+        try current_dir.copyFile("res/lang/pl.ini", lang_dir, "pl.ini", .{});
+        try current_dir.copyFile("res/lang/pt.ini", lang_dir, "pt.ini", .{});
+        try current_dir.copyFile("res/lang/pt_BR.ini", lang_dir, "pt_BR.ini", .{});
+        try current_dir.copyFile("res/lang/ro.ini", lang_dir, "ro.ini", .{});
+        try current_dir.copyFile("res/lang/ru.ini", lang_dir, "ru.ini", .{});
+        try current_dir.copyFile("res/lang/sr.ini", lang_dir, "sr.ini", .{});
+        try current_dir.copyFile("res/lang/sv.ini", lang_dir, "sv.ini", .{});
+        try current_dir.copyFile("res/lang/tr.ini", lang_dir, "tr.ini", .{});
+        try current_dir.copyFile("res/lang/uk.ini", lang_dir, "uk.ini", .{});
+    }
+
+    {
+        const pam_path = try std.fs.path.join(allocator, &[_][]const u8{ dest_directory, "/etc/pam.d" });
+
+        std.fs.cwd().makePath(pam_path) catch {
+            if (!std.mem.eql(u8, dest_directory, "")) {
+                std.debug.print("warn: {s} already exists as a directory.\n", .{pam_path});
+            }
+        };
+
+        var pam_dir = std.fs.cwd().openDir(pam_path, .{}) catch unreachable;
+        defer pam_dir.close();
+
+        try current_dir.copyFile("res/pam.d/ly", pam_dir, "ly", .{ .override_mode = 0o644 });
+    }
+}
+
+pub fn uninstallall(step: *std.Build.Step, progress: ProgressNode) !void {
+    _ = progress;
+    try std.fs.cwd().deleteTree(data_directory);
+    const allocator = step.owner.allocator;
+
+    const exe_path = try std.fs.path.join(allocator, &[_][]const u8{ dest_directory, "/usr/bin/", exe_name });
+    try std.fs.cwd().deleteFile(exe_path);
+
+    const pam_path = try std.fs.path.join(allocator, &[_][]const u8{ dest_directory, "/etc/pam.d/ly" });
+    try std.fs.cwd().deleteFile(pam_path);
+
+    const systemd_service_path = try std.fs.path.join(allocator, &[_][]const u8{ dest_directory, "/usr/lib/systemd/system/ly.service" });
+    std.fs.cwd().deleteFile(systemd_service_path) catch {
+        std.debug.print("warn: systemd service not found.\n", .{});
+    };
+
+    const openrc_service_path = try std.fs.path.join(allocator, &[_][]const u8{ dest_directory, "/etc/init.d/ly" });
+    std.fs.cwd().deleteFile(openrc_service_path) catch {
+        std.debug.print("warn: openrc service not found.\n", .{});
+    };
+
+    const runit_service_path = try std.fs.path.join(allocator, &[_][]const u8{ dest_directory, "/etc/sv/ly" });
+    std.fs.cwd().deleteTree(runit_service_path) catch {
+        std.debug.print("warn: runit service not found.\n", .{});
+    };
+}
+
+fn getVersionStr(b: *std.Build, name: []const u8, version: std.SemanticVersion) ![]const u8 {
+    const version_str = b.fmt("{d}.{d}.{d}", .{ version.major, version.minor, version.patch });
+
+    var status: u8 = undefined;
+    const git_describe_raw = b.runAllowFail(&[_][]const u8{
+        "git",
+        "-C",
+        b.build_root.path orelse ".",
+        "describe",
+        "--match",
+        "*.*.*",
+        "--tags",
+    }, &status, .Ignore) catch {
+        return version_str;
+    };
+    var git_describe = std.mem.trim(u8, git_describe_raw, " \n\r");
+    git_describe = std.mem.trimLeft(u8, git_describe, "v");
+
+    switch (std.mem.count(u8, git_describe, "-")) {
+        0 => {
+            if (!std.mem.eql(u8, version_str, git_describe)) {
+                std.debug.print("{s} version '{s}' does not match git tag: '{s}'\n", .{ name, version_str, git_describe });
+                std.process.exit(1);
+            }
+            return version_str;
+        },
+        2 => {
+            // Untagged development build (e.g. 0.10.0-dev.2025+ecf0050a9).
+            var it = std.mem.splitScalar(u8, git_describe, '-');
+            const tagged_ancestor = std.mem.trimLeft(u8, it.first(), "v");
+            const commit_height = it.next().?;
+            const commit_id = it.next().?;
+
+            const ancestor_ver = try std.SemanticVersion.parse(tagged_ancestor);
+            if (version.order(ancestor_ver) != .gt) {
+                std.debug.print("{s} version '{}' must be greater than tagged ancestor '{}'\n", .{ name, version, ancestor_ver });
+                std.process.exit(1);
+            }
+
+            // Check that the commit hash is prefixed with a 'g' (a Git convention).
+            if (commit_id.len < 1 or commit_id[0] != 'g') {
+                std.debug.print("Unexpected `git describe` output: {s}\n", .{git_describe});
+                return version_str;
+            }
+
+            // The version is reformatted in accordance with the https://semver.org specification.
+            return b.fmt("{s}-dev.{s}+{s}", .{ version_str, commit_height, commit_id[1..] });
+        },
+        else => {
+            std.debug.print("Unexpected `git describe` output: {s}\n", .{git_describe});
+            return version_str;
+        },
+    }
+}

build.zig.zon

@@ -0,0 +1,16 @@
+.{
+    .name = "ly",
+    .version = "1.0.0",
+    .minimum_zig_version = "0.12.0",
+    .dependencies = .{
+        .clap = .{
+            .url = "https://github.com/Hejsil/zig-clap/archive/refs/tags/0.9.1.tar.gz",
+            .hash = "122062d301a203d003547b414237229b09a7980095061697349f8bef41be9c30266b",
+        },
+        .zigini = .{
+            .url = "https://github.com/Kawaii-Ash/zigini/archive/0bba97a12582928e097f4074cc746c43351ba4c8.tar.gz",
+            .hash = "12209b971367b4066d40ecad4728e6fdffc4cc4f19356d424c2de57f5b69ac7a619a",
+        },
+    },
+    .paths = .{""},
+}

changelog.md

@@ -0,0 +1,52 @@
+# Zig Rewrite (Version 1.0.0)
+
+## Config Options
+
+res/config.ini contains all of the available config options and their default values.
+
+### Additions
+
++ `border_fg` has been introduced to change the color of the borders.
++ `term_restore_cursor_cmd` should restore the cursor to it's usual state.
++ `vi_mode` to enable vi keybindings.
++ `sleep_key` and `sleep_cmd`.
++ `numlock` to set numlock on startup.
++ `initial_info_text` allows changing the initial text on the info line.
++ `box_title` to display a title at the top of the main box
+
+Note: `sleep_cmd` is unset by default, meaning it's hidden and has no effect. 
+
+### Changes
+
++ xinitrc can be set to null to hide it.
++ `blank_password` has been renamed to `clear_password`.
++ `save_file` has been deprecated and will be removed in a future version.
+
+### Removals
+
++ `wayland_specifier` has been removed.
+
+## Save File
+
+The save file is now in .ini format and stored in the same directory as the config.
+Older save files will be migrated to the new format.
+
+Example:
+
+```ini
+user = ash
+session_index = 0
+```
+
+## Misc
+
++ Display server name added next to selected session.
++ getty@tty2 has been added as a conflict in res/ly.service, so if it is running, ly should still be able to start.
++ `XDG_CURRENT_DESKTOP` is now set by ly.
++ LANG is no longer set by ly.
++ X Server PID is fetched from /tmp/X{d}.lock to be able to kill the process since it detaches.
++ Non .desktop files are now ignored in sessions directory.
++ PAM auth is now done in a child process. (Fixes some issues with logging out and back in).
++ When ly receives SIGTERM, the terminal is now cleared and existing child processes are cleaned up.
++ Shift+Tab now focuses previous input.
++ Display text in the info line when authenticating.

makefile

@@ -1,118 +0,0 @@
-NAME = ly
-CC = gcc
-FLAGS = -std=c99 -pedantic -g
-FLAGS+= -Wall -Wextra -Werror=vla -Wno-unused-parameter
-#FLAGS+= -DDEBUG
-FLAGS+= -DLY_VERSION=\"$(shell git describe --long --tags | sed 's/\([^-]*-g\)/r\1/;s/-/./g')\"
-LINK = -lpam -lxcb
-VALGRIND = --show-leak-kinds=all --track-origins=yes --leak-check=full --suppressions=../res/valgrind.supp
-CMD = ./$(NAME)
-
-OS:= $(shell uname -s)
-ifeq ($(OS), Linux)
-	FLAGS+= -D_DEFAULT_SOURCE
-endif
-
-BIND = bin
-OBJD = obj
-SRCD = src
-SUBD = sub
-RESD = res
-TESTD = tests
-
-DATADIR ?= ${DESTDIR}/etc/ly
-FLAGS+= -DDATADIR=\"$(DATADIR)\"
-
-INCL = -I$(SRCD)
-INCL+= -I$(SUBD)/ctypes
-INCL+= -I$(SUBD)/argoat/src
-INCL+= -I$(SUBD)/configator/src
-INCL+= -I$(SUBD)/dragonfail/src
-INCL+= -I$(SUBD)/termbox_next/src
-
-SRCS = $(SRCD)/main.c
-SRCS += $(SRCD)/config.c
-SRCS += $(SRCD)/draw.c
-SRCS += $(SRCD)/inputs.c
-SRCS += $(SRCD)/login.c
-SRCS += $(SRCD)/utils.c
-SRCS += $(SUBD)/argoat/src/argoat.c
-SRCS += $(SUBD)/configator/src/configator.c
-SRCS += $(SUBD)/dragonfail/src/dragonfail.c
-
-SRCS_OBJS:= $(patsubst %.c,$(OBJD)/%.o,$(SRCS))
-SRCS_OBJS+= $(SUBD)/termbox_next/bin/termbox.a
-
-.PHONY: final
-final: $(BIND)/$(NAME)
-
-$(OBJD)/%.o: %.c
-	@echo "building object $@"
-	@mkdir -p $(@D)
-	@$(CC) $(INCL) $(FLAGS) -c -o $@ $<
-
-$(SUBD)/termbox_next/bin/termbox.a:
-	@echo "building static object $@"
-	@(cd $(SUBD)/termbox_next && $(MAKE))
-
-$(BIND)/$(NAME): $(SRCS_OBJS)
-	@echo "compiling executable $@"
-	@mkdir -p $(@D)
-	@$(CC) -o $@ $^ $(LINK)
-
-run:
-	@cd $(BIND) && $(CMD)
-
-leak: leakgrind
-leakgrind: $(BIND)/$(NAME)
-	@rm -f valgrind.log
-	@cd $(BIND) && valgrind $(VALGRIND) 2> ../valgrind.log $(CMD)
-	@less valgrind.log
-
-install: $(BIND)/$(NAME)
-	@echo "installing ly"
-	@install -dZ ${DESTDIR}/etc/ly
-	@install -DZ $(BIND)/$(NAME) -t ${DESTDIR}/usr/bin
-	@install -DZ $(RESD)/config.ini -t ${DESTDIR}/etc/ly
-	@install -DZ $(RESD)/xsetup.sh -t $(DATADIR)
-	@install -DZ $(RESD)/wsetup.sh -t $(DATADIR)
-	@install -dZ $(DATADIR)/lang
-	@install -DZ $(RESD)/lang/* -t $(DATADIR)/lang
-	@install -DZ $(RESD)/pam.d/ly -m 644 -t ${DESTDIR}/etc/pam.d
-
-installnoconf: $(BIND)/$(NAME)
-	@echo "installing ly without the configuration file"
-	@install -dZ ${DESTDIR}/etc/ly
-	@install -DZ $(BIND)/$(NAME) -t ${DESTDIR}/usr/bin
-	@install -DZ $(RESD)/xsetup.sh -t $(DATADIR)
-	@install -DZ $(RESD)/wsetup.sh -t $(DATADIR)
-	@install -dZ $(DATADIR)/lang
-	@install -DZ $(RESD)/lang/* -t $(DATADIR)/lang
-	@install -DZ $(RESD)/pam.d/ly -m 644 -t ${DESTDIR}/etc/pam.d
-
-installsystemd:
-	@echo "installing systemd service"
-	@install -DZ $(RESD)/ly.service -m 644 -t ${DESTDIR}/usr/lib/systemd/system
-
-installopenrc:
-	@echo "installing openrc service"
-	@install -DZ $(RESD)/ly-openrc -m 755 -T ${DESTDIR}/etc/init.d/${NAME}
-
-installrunit:
-	@echo "installing runit service"
-	@install -DZ $(RESD)/ly-runit-service/* -t ${DESTDIR}/etc/sv/ly
-
-uninstall:
-	@echo "uninstalling"
-	@rm -rf ${DESTDIR}/etc/ly
-	@rm -rf $(DATADIR)
-	@rm -f ${DESTDIR}/usr/bin/ly
-	@rm -f ${DESTDIR}/usr/lib/systemd/system/ly.service
-	@rm -f ${DESTDIR}/etc/pam.d/ly
-	@rm -f ${DESTDIR}/etc/init.d/${NAME}
-	@rm -rf ${DESTDIR}/etc/sv/ly
-
-clean:
-	@echo "cleaning"
-	@rm -rf $(BIND) $(OBJD) valgrind.log
-	@(cd $(SUBD)/termbox_next && $(MAKE) clean)

readme.md

@@ -5,28 +5,39 @@
 Ly is a lightweight TUI (ncurses-like) display manager for Linux and BSD.
 
 ## Dependencies
- - a C99 compiler (tested with tcc and gcc)
+- Compile-time:
- - a C standard library
+  - zig 0.12.0 or 0.13.0
- - GNU make
+  - a C standard library
- - pam
+  - pam
- - xcb
+  - xcb
- - xorg
+- Runtime (with default config):
- - xorg-xauth
+  - xorg
- - mcookie
+  - xorg-xauth
- - tput
+  - mcookie
- - shutdown
+  - tput
+  - shutdown
 
-On Debian-based distros running `apt install build-essential libpam0g-dev libxcb-xkb-dev` as root should install all the dependencies for you. 
+### Debian
-For Fedora try running `dnf install make automake gcc gcc-c++ kernel-devel pam-devel libxcb-devel`
+```
+# apt install build-essential libpam0g-dev libxcb-xkb-dev
+```
+
+### Fedora
+**Warning**: You may encounter issues with SELinux on Fedora.
+It is recommended to add a rule for Ly as it currently does not ship one.
+
+```
+# dnf install kernel-devel pam-devel libxcb-devel
+```
 
 ## Support
-The following desktop environments were tested with success
+The following desktop environments were tested with success:
-
  - awesome
  - bspwm
  - budgie
  - cinnamon
  - deepin
+ - dwl
  - dwm
  - enlightenment
  - gnome
@@ -57,7 +68,7 @@ changing the source code won't be necessary :)
 ## Cloning and Compiling
 Clone the repository
 ```
-$ git clone --recurse-submodules https://github.com/fairyglade/ly
+$ git clone https://github.com/fairyglade/ly
 ```
 
 Change the directory to ly
@@ -67,18 +78,18 @@ $ cd ly
 
 Compile
 ```
-$ make
+$ zig build
 ```
 
 Test in the configured tty (tty2 by default)
 or a terminal emulator (but desktop environments won't start)
 ```
-# make run
+# zig build run
 ```
 
 Install Ly and the provided systemd service file
 ```
-# make install installsystemd
+# zig build installsystemd
 ```
 
 Enable the service
@@ -93,12 +104,13 @@ disable getty on Ly's tty to prevent "login" from spawning on top of it
 ```
 
 ### OpenRC
+**NOTE**: On Gentoo, Ly will disable the `display-manager-init` service in order to run.
 
 Clone, compile and test.
 
 Install Ly and the provided OpenRC service
 ```
-# make install installopenrc
+# zig build installopenrc
 ```
 
 Enable the service
@@ -108,16 +120,15 @@ Enable the service
 
 You can edit which tty Ly will start on by editing the `tty` option in the configuration file.
 
-If you choose a tty that already has a login/getty running (has a basic login prompt), then you have to disable the getty so it doesn't respawn on top of ly
+If you choose a tty that already has a login/getty running (has a basic login prompt),
+then you have to disable getty, so it doesn't respawn on top of ly
 ```
 # rc-update del agetty.tty2
 ```
 
 ### runit
-
 ```
-$ make
+# zig build installrunit
-# make install installrunit
 # ln -s /etc/sv/ly /var/service/
 ```
 
@@ -129,12 +140,28 @@ You should as well disable your existing display manager service if needed, e.g.
 # rm /var/service/lxdm
 ```
 
-The agetty service for the tty console where you are running ly should be disabled. For instance, if you are running ly on tty2 (that's the default, check your `/etc/ly/config.ini`) you should disable the agetty-tty2 service like this:
+The agetty service for the tty console where you are running ly should be disabled.
+For instance, if you are running ly on tty2 (that's the default, check your `/etc/ly/config.ini`)
+you should disable the agetty-tty2 service like this:
 
 ```
 # rm /var/service/agetty-tty2
 ```
 
+### Updating
+You can also install Ly without copying the system service and the configuration file. That's
+called *updating*. To update, simply run:
+
+```
+# zig build installnoconf
+```
+
+If you want to also copy the default config file (but still not the system service), run:
+
+```
+# zig build installexe
+```
+
 ## Arch Linux Installation
 You can install ly from the [`[extra]` repos](https://archlinux.org/packages/extra/x86_64/ly/):
 ```
@@ -169,9 +196,12 @@ Take a look at your .xsession if X doesn't start, as it can interfere
 
 ## PSX DOOM fire animation
 To enable the famous PSX DOOM fire described by [Fabien Sanglard](http://fabiensanglard.net/doom_fire_psx/index.html),
-just uncomment `animate = true` in `/etc/ly/config.ini`. You may also
+just set `animation = doom` in `/etc/ly/config.ini`. You may also
 disable the main box borders with `hide_borders = true`.
 
 ## Additional Information
 The name "Ly" is a tribute to the fairy from the game Rayman.
 Ly was tested by oxodao, who is some seriously awesome dude.
+
+## Gentoo (OpenRC) installation tip
+To avoid a console spawning on top on Ly, comment out the appropriate line from /etc/inittab (default is 2).

res/config.ini

@@ -1,24 +1,25 @@
-# Animation enabled/disabled
-#animate = false
-
 # The active animation
-# 0 -> PSX DOOM fire (default)
+# none   -> Nothing (default)
-# 1 -> CMatrix 
+# doom   -> PSX DOOM fire
-#animation = 0
+# matrix -> CMatrix
+animation = none
 
-# format string for clock in top right corner (see strftime specification)
+# Format string for clock in top right corner (see strftime specification). Example: %c
-#clock = %c
+clock = null
 
-# enable/disable big clock
+# Enable/disable big clock
-#bigclock = true
+bigclock = false
 
 # The character used to mask the password
-#asterisk = *
+asterisk = *
 
 # Erase password input on failure
-#blank_password = false
+clear_password = false
 
-#The `fg` and `bg` color settings take a digit 0-8 corresponding to:
+# Enable vi keybindings
+vi_mode = false
+
+# The `fg` and `bg` color settings take a digit 0-8 corresponding to:
 #define TB_DEFAULT 0x00
 #define TB_BLACK   0x01
 #define TB_RED     0x02
@@ -38,103 +39,124 @@
 # config) will be used by `ly` for `fg = 8`.
 
 # Background color id
-#bg = 0
+bg = 0
 
 # Foreground color id
-#fg = 9
+fg = 8
+
+# Border color
+border_fg = 8
+
+# Title to show at the top of the main box
+box_title = null
+
+# Initial text to show on the info line (Defaults to hostname)
+initial_info_text = null
 
 # Blank main box background
 # Setting to false will make it transparent
-#blank_box = true
+blank_box = true
 
 # Remove main box borders
-#hide_borders = false
+hide_borders = false
 
 # Main box margins
-#margin_box_h = 2
+margin_box_h = 2
-#margin_box_v = 1
+margin_box_v = 1
 
 # Input boxes length
-#input_len = 34
+input_len = 34
 
 # Max input sizes
-#max_desktop_len = 100
+max_desktop_len = 100
-#max_login_len = 255
+max_login_len = 255
-#max_password_len = 255
+max_password_len = 255
-
 
 # Input box active by default on startup
-#default_input = 2
+# Available inputs: session, login, password
+default_input = login
 
 # Load the saved desktop and username
-#load = true
+load = true
 
 # Save the current desktop and login as defaults
-#save = true
+save = true
 
+# Deprecated - Will be removed in a future version
+# New save files are now loaded from the same directory as the config
+# Currently used to migrate old save files to the new version
 # File in which to save and load the default desktop and login
-#save_file = /etc/ly/save
+save_file = /etc/ly/save
 
+# Remove power management command hints
+hide_key_hints = false
 
-# Remove F1/F2 command hints
+# Specifies the key used for shutdown (F1-F12)
-#hide_f1_commands = false
+shutdown_key = F1
 
-# Command executed when pressing F1
+# Specifies the key used for restart (F1-F12)
-#shutdown_cmd = /sbin/shutdown -a now
+restart_key = F2
 
-# Command executed when pressing F2
+# Specifies the key used for sleep (F1-F12)
-#restart_cmd = /sbin/shutdown -r now
+sleep_key = F3
 
+# Command executed when pressing shutdown_key
+shutdown_cmd = /sbin/shutdown -a now
+
+# Command executed when pressing restart_key
+restart_cmd = /sbin/shutdown -r now
+
+# Command executed when pressing sleep key (can be null)
+sleep_cmd = null
 
 # Active language
 # Available languages are found in /etc/ly/lang/
-#lang = en
+lang = en
 
-
+# TTY in use
-# tty in use
+tty = 2
-#tty = 2
 
 # Console path
-#console_dev = /dev/console
+console_dev = /dev/console
-
-# Default path
-#path = /sbin:/bin:/usr/local/sbin:/usr/local/bin:/usr/bin:/usr/sbin
 
+# Default path. If null, ly doesn't set a path.
+path = /sbin:/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin
 
 # Event timeout in milliseconds
-#min_refresh_delta = 5
+min_refresh_delta = 5
+
+# Set numlock on/off at startup
+numlock = false
 
 # Service name (set to ly to use the provided pam config file)
-#service_name = ly
+service_name = ly
 
 # Terminal reset command (tput is faster)
-#term_reset_cmd = /usr/bin/tput reset
+term_reset_cmd = /usr/bin/tput reset
+
+# Terminal restore cursor command
+term_restore_cursor_cmd = /usr/bin/tput cnorm
 
 # Cookie generator
-#mcookie_cmd = /usr/bin/mcookie
+mcookie_cmd = /usr/bin/mcookie
-
 
 # Wayland setup command
-#wayland_cmd = /etc/ly/wsetup.sh
+wayland_cmd = /etc/ly/wsetup.sh
-
-# Add wayland specifier to session names
-#wayland_specifier = false
 
 # Wayland desktop environments
-#waylandsessions = /usr/share/wayland-sessions
+waylandsessions = /usr/share/wayland-sessions
 
-
+# xinitrc (hidden if null)
-# xinitrc
+xinitrc = ~/.xinitrc
-#xinitrc = ~/.xinitrc
 
 # Xorg server command
-#x_cmd = /usr/bin/X
+x_cmd = /usr/bin/X
 
 # Xorg setup command
-#x_cmd_setup = /etc/ly/xsetup.sh
+x_cmd_setup = /etc/ly/xsetup.sh
 
 # Xorg xauthority edition tool
-#xauth_cmd = /usr/bin/xauth
+xauth_cmd = /usr/bin/xauth
 
 # Xorg desktop environments
-#xsessions = /usr/share/xsessions
+xsessions = /usr/share/xsessions

res/lang/cat.ini

@@ -34,12 +34,12 @@ err_user_init = error al inicialitzar usuari
 err_user_uid = error al establir el UID de l'usuari
 err_xsessions_dir = error al cercar la carpeta de sessions
 err_xsessions_open = error al obrir la carpeta de sessions
-f1 = F1 aturar
-f2 = F2 reiniciar
 login = iniciar sessió
 logout = tancar sessió
 numlock = Bloq Num
 password = Clau
+restart = reiniciar
 shell = shell
+shutdown = aturar
 wayland = wayland
 xinitrc = xinitrc

res/lang/cs.ini

@@ -2,7 +2,7 @@ capslock = capslock
 err_alloc = alokace paměti selhala
 err_bounds = index je mimo hranice pole
 err_chdir = nelze otevřít domovský adresář
-err_console_dev = chyba při přístupi do konzole
+err_console_dev = chyba při přístupu do konzole
 err_dgn_oob = zpráva protokolu
 err_domain = neplatná doména
 err_hostname = nelze získat název hostitele
@@ -34,12 +34,12 @@ err_user_init = inicializace uživatele selhala
 err_user_uid = nastavení UID uživateli selhalo
 err_xsessions_dir = nepodařilo se najít složku relací
 err_xsessions_open = nepodařilo se otevřít složku relací
-f1 = F1 vypnout
-f2 = F2 restartovat
 login = uživatel
 logout = odhlášen
 numlock = numlock
 password = heslo
+restart = restartovat
 shell = příkazový řádek
+shutdown = vypnout
 wayland = wayland
 xinitrc = xinitrc

res/lang/de.ini

@@ -34,12 +34,12 @@ err_user_init = Initialisierung des Nutzers fehlgeschlagen
 err_user_uid = Setzen der Benutzer Id fehlgeschlagen
 err_xsessions_dir = Fehler beim finden des Sitzungsordners
 err_xsessions_open = Fehler beim öffnen des Sitzungsordners
-f1 = F1 Herunterfahren
-f2 = F2 Neustarten
 login = Anmelden
 logout = Abgemeldet
 numlock = Numtaste
 password = Passwort
+restart = Neustarten
 shell = shell
+shutdown = Herunterfahren
 wayland = wayland
 xinitrc = xinitrc

res/lang/en.ini

@@ -1,3 +1,4 @@
+authenticating = authenticating...
 capslock = capslock
 err_alloc = failed memory allocation
 err_bounds = out-of-bounds index
@@ -5,7 +6,9 @@ err_chdir = failed to open home folder
 err_console_dev = failed to access console
 err_dgn_oob = log message
 err_domain = invalid domain
+err_envlist = failed to get envlist
 err_hostname = failed to get hostname
+err_mcookie = mcookie command failed
 err_mlock = failed to lock password memory
 err_null = null pointer
 err_pam = pam transaction failed
@@ -29,17 +32,24 @@ err_perm_dir = failed to change current directory
 err_perm_group = failed to downgrade group permissions
 err_perm_user = failed to downgrade user permissions
 err_pwnam = failed to get user info
+err_unknown = an unknown error occurred
 err_user_gid = failed to set user GID
 err_user_init = failed to initialize user
 err_user_uid = failed to set user UID
+err_xauth = xauth command failed
+err_xcb_conn = xcb connection failed
 err_xsessions_dir = failed to find sessions folder
 err_xsessions_open = failed to open sessions folder
-f1 = F1 shutdown
+insert = insert
-f2 = F2 reboot
 login = login
 logout = logged out
+normal = normal
 numlock = numlock
 password = password
+restart = reboot
 shell = shell
+shutdown = shutdown
+sleep = sleep
 wayland = wayland
 xinitrc = xinitrc
+x11 = x11

res/lang/es.ini

@@ -34,12 +34,12 @@ err_user_init = error al inicializar usuario
 err_user_uid = error al establecer el UID del usuario
 err_xsessions_dir = error al buscar la carpeta de sesiones
 err_xsessions_open = error al abrir la carpeta de sesiones
-f1 = F1 apagar
-f2 = F2 reiniciar
 login = iniciar sesión
 logout = cerrar sesión
 numlock = Bloq Num
 password = contraseña
+restart = reiniciar
 shell = shell
+shutdown = apagar
 wayland = wayland
 xinitrc = xinitrc

res/lang/fr.ini

@@ -34,12 +34,12 @@ err_user_init = échec d'initialisation de l'utilisateur
 err_user_uid = échec de modification du UID
 err_xsessions_dir = échec de la recherche du dossier de sessions
 err_xsessions_open = échec de l'ouverture du dossier de sessions
-f1 = F1 éteindre
-f2 = F2 redémarrer
 login = identifiant
 logout = déconnection
 numlock = verr.num
 password = mot de passe
+restart = redémarrer
 shell = shell
+shutdown = éteindre
 wayland = wayland
 xinitrc = xinitrc

res/lang/it.ini

@@ -34,12 +34,12 @@ err_user_init = impossibile inizializzare utente
 err_user_uid = impossible impostare UID utente
 err_xsessions_dir = impossibile localizzare cartella sessioni
 err_xsessions_open = impossibile aprire cartella sessioni
-f1 = F1 arresto
-f2 = F2 riavvio
 login = username
 logout = scollegato
 numlock = numlock
 password = password
+restart = riavvio
 shell = shell
+shutdown = arresto
 wayland = wayland
 xinitrc = xinitrc

res/lang/pl.ini

@@ -34,12 +34,12 @@ err_user_init = nie udało się zainicjalizować użytkownika
 err_user_uid = nie udało się ustawić UID użytkownika
 err_xsessions_dir = nie udało się znaleźć folderu sesji
 err_xsessions_open = nie udało się otworzyć folderu sesji
-f1 = F1 wyłącz
-f2 = F2 uruchom ponownie
 login = login
 logout = wylogowano
 numlock = numlock
 password = hasło
+restart = uruchom ponownie
 shell = powłoka
+shutdown = wyłącz
 wayland = wayland
 xinitrc = xinitrc

res/lang/pt.ini

@@ -34,12 +34,12 @@ err_user_init = erro ao iniciar o utilizador
 err_user_uid = erro ao definir o UID do utilizador
 err_xsessions_dir = erro ao localizar a pasta das sessões
 err_xsessions_open = erro ao abrir a pasta das sessões
-f1 = F1 encerrar
-f2 = F2 reiniciar
 login = iniciar sessão
 logout = terminar sessão
 numlock = numlock
 password = palavra-passe
+restart = reiniciar
 shell = shell
+shutdown = encerrar
 wayland = wayland
 xinitrc = xinitrc

res/lang/pt_BR.ini

@@ -34,12 +34,12 @@ err_user_init = não foi possível iniciar o usuário
 err_user_uid = não foi possível definir o UID do usuário
 err_xsessions_dir = não foi possível encontrar a pasta das sessões
 err_xsessions_open = não foi possível abrir a pasta das sessões
-f1 = F1 desligar
-f2 = F2 reiniciar
 login = conectar
 logout = desconectado
 numlock = numlock
 password = senha
+restart = reiniciar
 shell = shell
+shutdown = desligar
 wayland = wayland
 xinitrc = xinitrc

res/lang/ro.ini

@@ -34,12 +34,12 @@ err_perm_user = nu s-a putut face downgrade permisiunilor de utilizator
 
 
 
-f1 = F1 opreşte sistemul
-f2 = F2 resetează
 login = utilizator
 logout = opreşte sesiunea
 numlock = numlock
 password = parolă
+restart = resetează
 shell = shell
+shutdown = opreşte sistemul
 wayland = wayland
 xinitrc = xinitrc

res/lang/ru.ini

@@ -34,12 +34,12 @@ err_user_init = не удалось инициализировать польз
 err_user_uid = не удалось установить UID пользователя
 err_xsessions_dir = не удалось найти сессионную папку
 err_xsessions_open = не удалось открыть сессионную папку
-f1 = F1 выключить
-f2 = F2 перезагрузить
 login = логин
 logout = logged out
 numlock = numlock
 password = пароль
+restart = перезагрузить
 shell = shell
+shutdown = выключить
 wayland = wayland
 xinitrc = xinitrc

res/lang/sr.ini

@@ -34,12 +34,12 @@ err_user_init = neuspijensa inicijalizacija korisnika
 err_user_uid = neuspijesno postavljanje UID-a korisnika
 err_xsessions_dir = neuspijesno pronalazenje foldera sesija
 err_xsessions_open = neuspijesno otvaranje foldera sesija 
-f1 = F1 ugasi
-f2 = F2 ponovo pokreni
 login = korisnik
 logout = izlogovan
 numlock = numlock
 password = lozinka
+restart = ponovo pokreni
 shell = shell
+shutdown = ugasi
 wayland = wayland
 xinitrc = xinitrc

res/lang/sv.ini

@@ -34,12 +34,12 @@ err_user_init = misslyckades att initialisera användaren
 err_user_uid = misslyckades att ställa in användar-UID
 err_xsessions_dir = misslyckades att hitta sessionskatalog
 err_xsessions_open = misslyckades att öppna sessionskatalog
-f1 = F1 stäng av
+login = inloggning
-f2 = F2 starta om
-login = inloggad
 logout = utloggad
 numlock = numlock
 password = lösenord
+restart = starta om
 shell = skal
+shutdown = stäng av
 wayland = wayland
 xinitrc = xinitrc

res/lang/tr.ini

@@ -34,12 +34,12 @@ err_user_init = kullanici oturumu baslatilamadi
 err_user_uid = kullanici icin UID ayarlanamadi
 err_xsessions_dir = oturumlar klasoru bulunamadi
 err_xsessions_open = oturumlar klasoru acilamadi
-f1 = F1 makineyi kapat
-f2 = F2 yeniden baslat
 login = kullanici
 logout = oturumdan cikis yapildi
 numlock = numlock
 password = sifre
+restart = yeniden baslat
 shell = shell
+shutdown = makineyi kapat
 wayland = wayland
 xinitrc = xinitrc

res/lang/uk.ini

@@ -34,12 +34,12 @@ err_user_init = не вдалося ініціалізувати користу
 err_user_uid = не вдалося змінити UID користувача
 err_xsessions_dir = не вдалося знайти каталог сесій
 err_xsessions_open = не вдалося відкрити каталог сесій
-f1 = F1 вимкнути
-f2 = F2 перезавантажити
 login = логін
 logout = вийти
 numlock = numlock
 password = пароль
+restart = перезавантажити
 shell = оболонка
+shutdown = вимкнути
 wayland = wayland
 xinitrc = xinitrc

res/ly.service

@@ -2,6 +2,7 @@
 Description=TUI display manager
 After=systemd-user-sessions.service plymouth-quit-wait.service
 After=getty@tty2.service
+Conflicts=getty@tty2.service
 
 [Service]
 Type=idle

res/wsetup.sh

@@ -40,6 +40,7 @@ case $SHELL in
     ;;
   */fish)
     [ -f /etc/profile ] && . /etc/profile
+    [ -f $HOME/.profile ] && . $HOME/.profile
     xsess_tmp=`mktemp /tmp/xsess-env-XXXXXX`
     $SHELL --login -c "/bin/sh -c 'export -p' > $xsess_tmp"
     . $xsess_tmp

res/xsetup.sh

@@ -1,4 +1,4 @@
-#! /bin/sh
+#!/bin/sh
 # Xsession - run as user
 # Copyright (C) 2016 Pier Luigi Fiorini <pierluigi.fiorini@gmail.com>
 
@@ -40,6 +40,7 @@ case $SHELL in
     ;;
   */fish)
     [ -f /etc/profile ] && . /etc/profile
+    [ -f $HOME/.profile ] && . $HOME/.profile
     xsess_tmp=`mktemp /tmp/xsess-env-XXXXXX`
     $SHELL --login -c "/bin/sh -c 'export -p' > $xsess_tmp"
     . $xsess_tmp
@@ -82,6 +83,10 @@ if [ -d "$xsessionddir" ]; then
     done
 fi
 
+if [ -f "$USERXSESSION" ]; then
+    . "$USERXSESSION"
+fi
+
 if [ -d /etc/X11/Xresources ]; then
   for i in /etc/X11/Xresources/*; do
     [ -f $i ] && xrdb -merge $i
@@ -92,10 +97,6 @@ fi
 [ -f $HOME/.Xresources ] && xrdb -merge $HOME/.Xresources
 [ -f $XDG_CONFIG_HOME/X11/Xresources ] && xrdb -merge $XDG_CONFIG_HOME/X11/Xresources
 
-if [ -f "$USERXSESSION" ]; then
-  . "$USERXSESSION"
-fi
-
 if [ -z "$*" ]; then
     exec xmessage -center -buttons OK:0 -default OK "Sorry, $DESKTOP_SESSION is no valid session."
 else

src/SharedError.zig

@@ -0,0 +1,39 @@
+const std = @import("std");
+
+const ErrInt = std.meta.Int(.unsigned, @bitSizeOf(anyerror));
+
+const ErrorHandler = packed struct {
+    has_error: bool = false,
+    err_int: ErrInt = 0,
+};
+
+const SharedError = @This();
+
+data: []align(std.mem.page_size) u8,
+
+pub fn init() !SharedError {
+    const data = try std.posix.mmap(null, @sizeOf(ErrorHandler), std.posix.PROT.READ | std.posix.PROT.WRITE, .{ .TYPE = .SHARED, .ANONYMOUS = true }, -1, 0);
+
+    return .{ .data = data };
+}
+
+pub fn deinit(self: *SharedError) void {
+    std.posix.munmap(self.data);
+}
+
+pub fn writeError(self: SharedError, err: anyerror) void {
+    var buf_stream = std.io.fixedBufferStream(self.data);
+    const writer = buf_stream.writer();
+    writer.writeStruct(ErrorHandler{ .has_error = true, .err_int = @intFromError(err) }) catch {};
+}
+
+pub fn readError(self: SharedError) ?anyerror {
+    var buf_stream = std.io.fixedBufferStream(self.data);
+    const reader = buf_stream.reader();
+    const err_handler = try reader.readStruct(ErrorHandler);
+
+    if (err_handler.has_error)
+        return @errorFromInt(err_handler.err_int);
+
+    return null;
+}

src/animations/Doom.zig

@@ -0,0 +1,84 @@
+const std = @import("std");
+const Allocator = std.mem.Allocator;
+const TerminalBuffer = @import("../tui/TerminalBuffer.zig");
+const utils = @import("../tui/utils.zig");
+
+const interop = @import("../interop.zig");
+const termbox = interop.termbox;
+
+const Doom = @This();
+
+pub const STEPS = 13;
+pub const FIRE = [_]termbox.tb_cell{
+    utils.initCell(' ', 9, 0),
+    utils.initCell(0x2591, 2, 0), // Red
+    utils.initCell(0x2592, 2, 0), // Red
+    utils.initCell(0x2593, 2, 0), // Red
+    utils.initCell(0x2588, 2, 0), // Red
+    utils.initCell(0x2591, 4, 2), // Yellow
+    utils.initCell(0x2592, 4, 2), // Yellow
+    utils.initCell(0x2593, 4, 2), // Yellow
+    utils.initCell(0x2588, 4, 2), // Yellow
+    utils.initCell(0x2591, 8, 4), // White
+    utils.initCell(0x2592, 8, 4), // White
+    utils.initCell(0x2593, 8, 4), // White
+    utils.initCell(0x2588, 8, 4), // White
+};
+
+allocator: Allocator,
+terminal_buffer: *TerminalBuffer,
+buffer: []u8,
+
+pub fn init(allocator: Allocator, terminal_buffer: *TerminalBuffer) !Doom {
+    const buffer = try allocator.alloc(u8, terminal_buffer.width * terminal_buffer.height);
+    initBuffer(buffer, terminal_buffer.width);
+
+    return .{
+        .allocator = allocator,
+        .terminal_buffer = terminal_buffer,
+        .buffer = buffer,
+    };
+}
+
+pub fn deinit(self: Doom) void {
+    self.allocator.free(self.buffer);
+}
+
+pub fn realloc(self: *Doom) !void {
+    const buffer = try self.allocator.realloc(self.buffer, self.terminal_buffer.width * self.terminal_buffer.height);
+    initBuffer(buffer, self.terminal_buffer.width);
+    self.buffer = buffer;
+}
+
+pub fn draw(self: Doom) void {
+    for (0..self.terminal_buffer.width) |x| {
+        for (1..self.terminal_buffer.height) |y| {
+            const source = y * self.terminal_buffer.width + x;
+            const random = (self.terminal_buffer.random.int(u16) % 7) & 3;
+
+            var dest = (source - @min(source, random)) + 1;
+            if (self.terminal_buffer.width > dest) dest = 0 else dest -= self.terminal_buffer.width;
+
+            const buffer_source = self.buffer[source];
+            const buffer_dest_offset = random & 1;
+
+            if (buffer_source < buffer_dest_offset) continue;
+
+            var buffer_dest = buffer_source - buffer_dest_offset;
+            if (buffer_dest > 12) buffer_dest = 0;
+            self.buffer[dest] = @intCast(buffer_dest);
+
+            self.terminal_buffer.buffer[dest] = FIRE[buffer_dest];
+            self.terminal_buffer.buffer[source] = FIRE[buffer_source];
+        }
+    }
+}
+
+fn initBuffer(buffer: []u8, width: u64) void {
+    const length = buffer.len - width;
+    const slice_start = buffer[0..length];
+    const slice_end = buffer[length..];
+
+    @memset(slice_start, 0);
+    @memset(slice_end, STEPS - 1);
+}

src/animations/Matrix.zig

@@ -0,0 +1,181 @@
+const std = @import("std");
+const Allocator = std.mem.Allocator;
+const Random = std.rand.Random;
+const TerminalBuffer = @import("../tui/TerminalBuffer.zig");
+
+const interop = @import("../interop.zig");
+const termbox = interop.termbox;
+
+pub const FRAME_DELAY: u64 = 8;
+
+// Allowed codepoints
+pub const MIN_CODEPOINT: isize = 33;
+pub const MAX_CODEPOINT: isize = 123 - MIN_CODEPOINT;
+
+// Characters change mid-scroll
+pub const MID_SCROLL_CHANGE = true;
+
+const Matrix = @This();
+
+pub const Dot = struct {
+    value: isize,
+    is_head: bool,
+};
+
+pub const Line = struct {
+    space: isize,
+    length: isize,
+    update: isize,
+};
+
+allocator: Allocator,
+terminal_buffer: *TerminalBuffer,
+dots: []Dot,
+lines: []Line,
+frame: u64,
+count: u64,
+
+pub fn init(allocator: Allocator, terminal_buffer: *TerminalBuffer) !Matrix {
+    const dots = try allocator.alloc(Dot, terminal_buffer.width * (terminal_buffer.height + 1));
+    const lines = try allocator.alloc(Line, terminal_buffer.width);
+
+    initBuffers(dots, lines, terminal_buffer.width, terminal_buffer.height, terminal_buffer.random);
+
+    return .{
+        .allocator = allocator,
+        .terminal_buffer = terminal_buffer,
+        .dots = dots,
+        .lines = lines,
+        .frame = 3,
+        .count = 0,
+    };
+}
+
+pub fn deinit(self: Matrix) void {
+    self.allocator.free(self.dots);
+    self.allocator.free(self.lines);
+}
+
+pub fn realloc(self: *Matrix) !void {
+    const dots = try self.allocator.realloc(self.dots, self.terminal_buffer.width * (self.terminal_buffer.height + 1));
+    const lines = try self.allocator.realloc(self.lines, self.terminal_buffer.width);
+
+    initBuffers(dots, lines, self.terminal_buffer.width, self.terminal_buffer.height, self.terminal_buffer.random);
+
+    self.dots = dots;
+    self.lines = lines;
+}
+
+pub fn draw(self: *Matrix) void {
+    const buf_height = self.terminal_buffer.height;
+    const buf_width = self.terminal_buffer.width;
+    self.count += 1;
+    if (self.count > FRAME_DELAY) {
+        self.frame += 1;
+        if (self.frame > 4) self.frame = 1;
+        self.count = 0;
+
+        var x: u64 = 0;
+        while (x < self.terminal_buffer.width) : (x += 2) {
+            var tail: u64 = 0;
+            var line = &self.lines[x];
+            if (self.frame <= line.update) continue;
+
+            if (self.dots[x].value == -1 and self.dots[self.terminal_buffer.width + x].value == ' ') {
+                if (line.space > 0) {
+                    line.space -= 1;
+                } else {
+                    const randint = self.terminal_buffer.random.int(i16);
+                    const h: isize = @intCast(self.terminal_buffer.height);
+                    line.length = @mod(randint, h - 3) + 3;
+                    self.dots[x].value = @mod(randint, MAX_CODEPOINT) + MIN_CODEPOINT;
+                    line.space = @mod(randint, h + 1);
+                }
+            }
+
+            var y: u64 = 0;
+            var first_col = true;
+            var seg_len: u64 = 0;
+            height_it: while (y <= buf_height) : (y += 1) {
+                var dot = &self.dots[buf_width * y + x];
+                // Skip over spaces
+                while (y <= buf_height and (dot.value == ' ' or dot.value == -1)) {
+                    y += 1;
+                    if (y > buf_height) break :height_it;
+                    dot = &self.dots[buf_width * y + x];
+                }
+
+                // Find the head of this column
+                tail = y;
+                seg_len = 0;
+                while (y <= buf_height and dot.value != ' ' and dot.value != -1) {
+                    dot.is_head = false;
+                    if (MID_SCROLL_CHANGE) {
+                        const randint = self.terminal_buffer.random.int(i16);
+                        if (@mod(randint, 8) == 0) {
+                            dot.value = @mod(randint, MAX_CODEPOINT) + MIN_CODEPOINT;
+                        }
+                    }
+
+                    y += 1;
+                    seg_len += 1;
+                    // Head's down offscreen
+                    if (y > buf_height) {
+                        self.dots[buf_width * tail + x].value = ' ';
+                        break :height_it;
+                    }
+                    dot = &self.dots[buf_width * y + x];
+                }
+
+                const randint = self.terminal_buffer.random.int(i16);
+                dot.value = @mod(randint, MAX_CODEPOINT) + MIN_CODEPOINT;
+                dot.is_head = true;
+
+                if (seg_len > line.length or !first_col) {
+                    self.dots[buf_width * tail + x].value = ' ';
+                    self.dots[x].value = -1;
+                }
+                first_col = false;
+            }
+        }
+    }
+
+    var x: u64 = 0;
+    while (x < buf_width) : (x += 2) {
+        var y: u64 = 1;
+        while (y <= self.terminal_buffer.height) : (y += 1) {
+            const dot = self.dots[buf_width * y + x];
+            var fg: u16 = @intCast(termbox.TB_GREEN);
+
+            if (dot.value == -1 or dot.value == ' ') {
+                _ = termbox.tb_set_cell(@intCast(x), @intCast(y - 1), ' ', fg, termbox.TB_DEFAULT);
+                continue;
+            }
+
+            if (dot.is_head) fg = @intCast(termbox.TB_WHITE | termbox.TB_BOLD);
+            _ = termbox.tb_set_cell(@intCast(x), @intCast(y - 1), @intCast(dot.value), fg, termbox.TB_DEFAULT);
+        }
+    }
+}
+
+fn initBuffers(dots: []Dot, lines: []Line, width: u64, height: u64, random: Random) void {
+    var y: u64 = 0;
+    while (y <= height) : (y += 1) {
+        var x: u64 = 0;
+        while (x < width) : (x += 2) {
+            dots[y * width + x].value = -1;
+        }
+    }
+
+    var x: u64 = 0;
+    while (x < width) : (x += 2) {
+        var line = lines[x];
+        const h: isize = @intCast(height);
+        line.space = @mod(random.int(i16), h) + 1;
+        line.length = @mod(random.int(i16), h - 3) + 3;
+        line.update = @mod(random.int(i16), 3) + 1;
+        lines[x] = line;
+
+        dots[width + x].value = ' ';
+    }
+}

src/auth.zig

@@ -0,0 +1,520 @@
+const std = @import("std");
+const enums = @import("enums.zig");
+const interop = @import("interop.zig");
+const TerminalBuffer = @import("tui/TerminalBuffer.zig");
+const Desktop = @import("tui/components/Desktop.zig");
+const Text = @import("tui/components/Text.zig");
+const Config = @import("config/Config.zig");
+const Allocator = std.mem.Allocator;
+const utmp = interop.utmp;
+const Utmp = utmp.utmp;
+const SharedError = @import("SharedError.zig");
+
+var xorg_pid: std.posix.pid_t = 0;
+pub fn xorgSignalHandler(i: c_int) callconv(.C) void {
+    if (xorg_pid > 0) _ = std.c.kill(xorg_pid, i);
+}
+
+var child_pid: std.posix.pid_t = 0;
+pub fn sessionSignalHandler(i: c_int) callconv(.C) void {
+    if (child_pid > 0) _ = std.c.kill(child_pid, i);
+}
+
+pub fn authenticate(config: Config, current_environment: Desktop.Environment, login: [:0]const u8, password: [:0]const u8) !void {
+    var tty_buffer: [3]u8 = undefined;
+    const tty_str = try std.fmt.bufPrintZ(&tty_buffer, "{d}", .{config.tty});
+
+    var pam_tty_buffer: [6]u8 = undefined;
+    const pam_tty_str = try std.fmt.bufPrintZ(&pam_tty_buffer, "tty{d}", .{config.tty});
+
+    // Set the XDG environment variables
+    setXdgSessionEnv(current_environment.display_server);
+    try setXdgEnv(tty_str, current_environment.xdg_session_desktop, current_environment.xdg_desktop_names orelse "");
+
+    // Open the PAM session
+    var credentials = [_:null]?[*:0]const u8{ login, password };
+
+    const conv = interop.pam.pam_conv{
+        .conv = loginConv,
+        .appdata_ptr = @ptrCast(&credentials),
+    };
+    var handle: ?*interop.pam.pam_handle = undefined;
+
+    var status = interop.pam.pam_start(config.service_name.ptr, null, &conv, &handle);
+    if (status != interop.pam.PAM_SUCCESS) return pamDiagnose(status);
+    defer _ = interop.pam.pam_end(handle, status);
+
+    // Set PAM_TTY as the current TTY. This is required in case it isn't being set by another PAM module
+    status = interop.pam.pam_set_item(handle, interop.pam.PAM_TTY, pam_tty_str.ptr);
+    if (status != interop.pam.PAM_SUCCESS) return pamDiagnose(status);
+
+    // Do the PAM routine
+    status = interop.pam.pam_authenticate(handle, 0);
+    if (status != interop.pam.PAM_SUCCESS) return pamDiagnose(status);
+
+    status = interop.pam.pam_acct_mgmt(handle, 0);
+    if (status != interop.pam.PAM_SUCCESS) return pamDiagnose(status);
+
+    status = interop.pam.pam_setcred(handle, interop.pam.PAM_ESTABLISH_CRED);
+    if (status != interop.pam.PAM_SUCCESS) return pamDiagnose(status);
+    defer status = interop.pam.pam_setcred(handle, interop.pam.PAM_DELETE_CRED);
+
+    status = interop.pam.pam_open_session(handle, 0);
+    if (status != interop.pam.PAM_SUCCESS) return pamDiagnose(status);
+    defer status = interop.pam.pam_close_session(handle, 0);
+
+    var pwd: *interop.passwd = undefined;
+    {
+        defer interop.endpwent();
+
+        // Get password structure from username
+        pwd = interop.getpwnam(login.ptr) orelse return error.GetPasswordNameFailed;
+    }
+
+    // Set user shell if it hasn't already been set
+    if (pwd.pw_shell[0] == 0) {
+        interop.setusershell();
+        pwd.pw_shell = interop.getusershell();
+        interop.endusershell();
+    }
+
+    var shared_err = try SharedError.init();
+    defer shared_err.deinit();
+
+    child_pid = try std.posix.fork();
+    if (child_pid == 0) {
+        startSession(config, pwd, handle, current_environment) catch |e| {
+            shared_err.writeError(e);
+            std.process.exit(1);
+        };
+        std.process.exit(0);
+    }
+
+    var entry = std.mem.zeroes(Utmp);
+
+    {
+        // If an error occurs here, we can send SIGTERM to the session
+        errdefer cleanup: {
+            _ = std.posix.kill(child_pid, std.posix.SIG.TERM) catch break :cleanup;
+            _ = std.posix.waitpid(child_pid, 0);
+        }
+
+        // If we receive SIGTERM, forward it to child_pid
+        const act = std.posix.Sigaction{
+            .handler = .{ .handler = &sessionSignalHandler },
+            .mask = std.posix.empty_sigset,
+            .flags = 0,
+        };
+        try std.posix.sigaction(std.posix.SIG.TERM, &act, null);
+
+        try addUtmpEntry(&entry, pwd.pw_name, child_pid);
+    }
+    // Wait for the session to stop
+    _ = std.posix.waitpid(child_pid, 0);
+
+    removeUtmpEntry(&entry);
+
+    try resetTerminal(pwd.pw_shell, config.term_reset_cmd);
+
+    if (shared_err.readError()) |err| return err;
+}
+
+fn startSession(
+    config: Config,
+    pwd: *interop.passwd,
+    handle: ?*interop.pam.pam_handle,
+    current_environment: Desktop.Environment,
+) !void {
+    const status = interop.initgroups(pwd.pw_name, pwd.pw_gid);
+    if (status != 0) return error.GroupInitializationFailed;
+
+    std.posix.setgid(pwd.pw_gid) catch return error.SetUserGidFailed;
+    std.posix.setuid(pwd.pw_uid) catch return error.SetUserUidFailed;
+
+    // Set up the environment
+    try initEnv(pwd, config.path);
+
+    // Set the PAM variables
+    const pam_env_vars: ?[*:null]?[*:0]u8 = interop.pam.pam_getenvlist(handle);
+    if (pam_env_vars == null) return error.GetEnvListFailed;
+
+    const env_list = std.mem.span(pam_env_vars.?);
+    for (env_list) |env_var| _ = interop.putenv(env_var.?);
+
+    // Execute what the user requested
+    std.posix.chdirZ(pwd.pw_dir) catch return error.ChangeDirectoryFailed;
+
+    try resetTerminal(pwd.pw_shell, config.term_reset_cmd);
+
+    switch (current_environment.display_server) {
+        .wayland => try executeWaylandCmd(pwd.pw_shell, config.wayland_cmd, current_environment.cmd),
+        .shell => try executeShellCmd(pwd.pw_shell),
+        .xinitrc, .x11 => {
+            var vt_buf: [5]u8 = undefined;
+            const vt = try std.fmt.bufPrint(&vt_buf, "vt{d}", .{config.tty});
+            try executeX11Cmd(pwd.pw_shell, pwd.pw_dir, config, current_environment.cmd, vt);
+        },
+    }
+}
+
+fn initEnv(pwd: *interop.passwd, path_env: ?[:0]const u8) !void {
+    _ = interop.setenv("HOME", pwd.pw_dir, 1);
+    _ = interop.setenv("PWD", pwd.pw_dir, 1);
+    _ = interop.setenv("SHELL", pwd.pw_shell, 1);
+    _ = interop.setenv("USER", pwd.pw_name, 1);
+    _ = interop.setenv("LOGNAME", pwd.pw_name, 1);
+
+    if (path_env) |path| {
+        const status = interop.setenv("PATH", path, 1);
+        if (status != 0) return error.SetPathFailed;
+    }
+}
+
+fn setXdgSessionEnv(display_server: enums.DisplayServer) void {
+    _ = interop.setenv("XDG_SESSION_TYPE", switch (display_server) {
+        .wayland => "wayland",
+        .shell => "tty",
+        .xinitrc, .x11 => "x11",
+    }, 0);
+}
+
+fn setXdgEnv(tty_str: [:0]u8, desktop_name: [:0]const u8, xdg_desktop_names: [:0]const u8) !void {
+    const uid = interop.getuid();
+    var uid_buffer: [10 + @sizeOf(u32) + 1]u8 = undefined;
+    const uid_str = try std.fmt.bufPrintZ(&uid_buffer, "/run/user/{d}", .{uid});
+
+    if (!std.mem.eql(u8, xdg_desktop_names, "")) _ = interop.setenv("XDG_CURRENT_DESKTOP", xdg_desktop_names.ptr, 0);
+    _ = interop.setenv("XDG_RUNTIME_DIR", uid_str.ptr, 0);
+    _ = interop.setenv("XDG_SESSION_CLASS", "user", 0);
+    _ = interop.setenv("XDG_SESSION_ID", "1", 0);
+    if (!std.mem.eql(u8, desktop_name, "")) _ = interop.setenv("XDG_SESSION_DESKTOP", desktop_name.ptr, 0);
+    _ = interop.setenv("XDG_SEAT", "seat0", 0);
+    _ = interop.setenv("XDG_VTNR", tty_str.ptr, 0);
+}
+
+fn loginConv(
+    num_msg: c_int,
+    msg: ?[*]?*const interop.pam.pam_message,
+    resp: ?*?[*]interop.pam.pam_response,
+    appdata_ptr: ?*anyopaque,
+) callconv(.C) c_int {
+    const message_count: u32 = @intCast(num_msg);
+    const messages = msg.?;
+
+    const allocator = std.heap.c_allocator;
+    const response = allocator.alloc(interop.pam.pam_response, message_count) catch return interop.pam.PAM_BUF_ERR;
+
+    // Initialise allocated memory to 0
+    // This ensures memory can be freed by pam on success
+    @memset(response, std.mem.zeroes(interop.pam.pam_response));
+
+    var username: ?[:0]u8 = null;
+    var password: ?[:0]u8 = null;
+    var status: c_int = interop.pam.PAM_SUCCESS;
+
+    for (0..message_count) |i| set_credentials: {
+        switch (messages[i].?.msg_style) {
+            interop.pam.PAM_PROMPT_ECHO_ON => {
+                const data: [*][*:0]u8 = @ptrCast(@alignCast(appdata_ptr));
+                username = allocator.dupeZ(u8, std.mem.span(data[0])) catch {
+                    status = interop.pam.PAM_BUF_ERR;
+                    break :set_credentials;
+                };
+                response[i].resp = username.?.ptr;
+            },
+            interop.pam.PAM_PROMPT_ECHO_OFF => {
+                const data: [*][*:0]u8 = @ptrCast(@alignCast(appdata_ptr));
+                password = allocator.dupeZ(u8, std.mem.span(data[1])) catch {
+                    status = interop.pam.PAM_BUF_ERR;
+                    break :set_credentials;
+                };
+                response[i].resp = password.?.ptr;
+            },
+            interop.pam.PAM_ERROR_MSG => {
+                status = interop.pam.PAM_CONV_ERR;
+                break :set_credentials;
+            },
+            else => {},
+        }
+    }
+
+    if (status != interop.pam.PAM_SUCCESS) {
+        // Memory is freed by pam otherwise
+        allocator.free(response);
+        if (username != null) allocator.free(username.?);
+        if (password != null) allocator.free(password.?);
+    } else {
+        resp.?.* = response.ptr;
+    }
+
+    return status;
+}
+
+fn resetTerminal(shell: [*:0]const u8, term_reset_cmd: [:0]const u8) !void {
+    const pid = try std.posix.fork();
+    if (pid == 0) {
+        const args = [_:null]?[*:0]const u8{ shell, "-c", term_reset_cmd };
+        std.posix.execveZ(shell, &args, std.c.environ) catch {};
+        std.process.exit(1);
+    }
+
+    _ = std.posix.waitpid(pid, 0);
+}
+
+fn getFreeDisplay() !u8 {
+    var buf: [15]u8 = undefined;
+    var i: u8 = 0;
+    while (i < 200) : (i += 1) {
+        const xlock = try std.fmt.bufPrint(&buf, "/tmp/.X{d}-lock", .{i});
+        std.posix.access(xlock, std.posix.F_OK) catch break;
+    }
+    return i;
+}
+
+fn getXPid(display_num: u8) !i32 {
+    var buf: [15]u8 = undefined;
+    const file_name = try std.fmt.bufPrint(&buf, "/tmp/.X{d}-lock", .{display_num});
+    const file = try std.fs.openFileAbsolute(file_name, .{});
+    defer file.close();
+
+    var file_buf: [20]u8 = undefined;
+    var fbs = std.io.fixedBufferStream(&file_buf);
+
+    _ = try file.reader().streamUntilDelimiter(fbs.writer(), '\n', 20);
+    const line = fbs.getWritten();
+
+    return std.fmt.parseInt(i32, std.mem.trim(u8, line, " "), 10);
+}
+
+fn createXauthFile(pwd: [:0]const u8) ![:0]const u8 {
+    var xauth_buf: [100]u8 = undefined;
+    var xauth_dir: [:0]const u8 = undefined;
+    const xdg_rt_dir = std.posix.getenv("XDG_RUNTIME_DIR");
+    var xauth_file: []const u8 = "lyxauth";
+
+    if (xdg_rt_dir == null) {
+        const xdg_cfg_home = std.posix.getenv("XDG_CONFIG_HOME");
+        var sb: std.c.Stat = undefined;
+        if (xdg_cfg_home == null) {
+            xauth_dir = try std.fmt.bufPrintZ(&xauth_buf, "{s}/.config", .{pwd});
+            _ = std.c.stat(xauth_dir, &sb);
+            const mode = sb.mode & std.posix.S.IFMT;
+            if (mode == std.posix.S.IFDIR) {
+                xauth_dir = try std.fmt.bufPrintZ(&xauth_buf, "{s}/ly", .{xauth_dir});
+            } else {
+                xauth_dir = pwd;
+                xauth_file = ".lyxauth";
+            }
+        } else {
+            xauth_dir = try std.fmt.bufPrintZ(&xauth_buf, "{s}/ly", .{xdg_cfg_home.?});
+        }
+
+        _ = std.c.stat(xauth_dir, &sb);
+        const mode = sb.mode & std.posix.S.IFMT;
+        if (mode != std.posix.S.IFDIR) {
+            std.posix.mkdir(xauth_dir, 777) catch {
+                xauth_dir = pwd;
+                xauth_file = ".lyxauth";
+            };
+        }
+    } else {
+        xauth_dir = xdg_rt_dir.?;
+    }
+
+    // Trim trailing slashes
+    var i = xauth_dir.len - 1;
+    while (xauth_dir[i] == '/') i -= 1;
+    const trimmed_xauth_dir = xauth_dir[0 .. i + 1];
+
+    var buf: [256]u8 = undefined;
+    const xauthority: [:0]u8 = try std.fmt.bufPrintZ(&buf, "{s}/{s}", .{ trimmed_xauth_dir, xauth_file });
+    const file = try std.fs.createFileAbsoluteZ(xauthority, .{});
+    file.close();
+
+    return xauthority;
+}
+
+pub fn mcookie(shell: [*:0]const u8, cmd: [:0]const u8) ![32]u8 {
+    const pipe = try std.posix.pipe();
+    defer std.posix.close(pipe[1]);
+
+    const output = std.fs.File{ .handle = pipe[0] };
+    defer output.close();
+
+    const pid = try std.posix.fork();
+    if (pid == 0) {
+        std.posix.close(pipe[0]);
+
+        std.posix.dup2(pipe[1], std.posix.STDOUT_FILENO) catch std.process.exit(1);
+        std.posix.close(pipe[1]);
+
+        const args = [_:null]?[*:0]const u8{ shell, "-c", cmd };
+        std.posix.execveZ(shell, &args, std.c.environ) catch {};
+        std.process.exit(1);
+    }
+
+    const result = std.posix.waitpid(pid, 0);
+
+    if (result.status != 0) return error.McookieFailed;
+
+    var buf: [32]u8 = undefined;
+    const len = try output.read(&buf);
+    if (len != 32) return error.McookieFailed;
+    return buf;
+}
+
+fn xauth(display_name: [:0]u8, shell: [*:0]const u8, pw_dir: [*:0]const u8, xauth_cmd: []const u8, mcookie_cmd: [:0]const u8) !void {
+    var pwd_buf: [100]u8 = undefined;
+    const pwd = try std.fmt.bufPrintZ(&pwd_buf, "{s}", .{pw_dir});
+
+    const xauthority = try createXauthFile(pwd);
+    _ = interop.setenv("XAUTHORITY", xauthority, 1);
+    _ = interop.setenv("DISPLAY", display_name, 1);
+
+    const mcookie_output = try mcookie(shell, mcookie_cmd);
+
+    const pid = try std.posix.fork();
+    if (pid == 0) {
+        var cmd_buffer: [1024]u8 = undefined;
+        const cmd_str = std.fmt.bufPrintZ(&cmd_buffer, "{s} add {s} . {s}", .{ xauth_cmd, display_name, mcookie_output }) catch std.process.exit(1);
+        const args = [_:null]?[*:0]const u8{ shell, "-c", cmd_str };
+        std.posix.execveZ(shell, &args, std.c.environ) catch {};
+        std.process.exit(1);
+    }
+
+    const status = std.posix.waitpid(pid, 0);
+    if (status.status != 0) return error.XauthFailed;
+}
+
+fn executeShellCmd(shell: [*:0]const u8) !void {
+    const args = [_:null]?[*:0]const u8{shell};
+    return std.posix.execveZ(shell, &args, std.c.environ);
+}
+
+fn executeWaylandCmd(shell: [*:0]const u8, wayland_cmd: []const u8, desktop_cmd: []const u8) !void {
+    var cmd_buffer: [1024]u8 = undefined;
+    const cmd_str = try std.fmt.bufPrintZ(&cmd_buffer, "{s} {s}", .{ wayland_cmd, desktop_cmd });
+    const args = [_:null]?[*:0]const u8{ shell, "-c", cmd_str };
+    return std.posix.execveZ(shell, &args, std.c.environ);
+}
+
+fn executeX11Cmd(shell: [*:0]const u8, pw_dir: [*:0]const u8, config: Config, desktop_cmd: []const u8, vt: []const u8) !void {
+    const display_num = try getFreeDisplay();
+    var buf: [5]u8 = undefined;
+    const display_name = try std.fmt.bufPrintZ(&buf, ":{d}", .{display_num});
+    try xauth(display_name, shell, pw_dir, config.xauth_cmd, config.mcookie_cmd);
+
+    const pid = try std.posix.fork();
+    if (pid == 0) {
+        var cmd_buffer: [1024]u8 = undefined;
+        const cmd_str = std.fmt.bufPrintZ(&cmd_buffer, "{s} {s} {s}", .{ config.x_cmd, display_name, vt }) catch std.process.exit(1);
+        const args = [_:null]?[*:0]const u8{ shell, "-c", cmd_str };
+        std.posix.execveZ(shell, &args, std.c.environ) catch {};
+        std.process.exit(1);
+    }
+
+    var ok: c_int = undefined;
+    var xcb: ?*interop.xcb.xcb_connection_t = null;
+    while (ok != 0) {
+        xcb = interop.xcb.xcb_connect(null, null);
+        ok = interop.xcb.xcb_connection_has_error(xcb);
+        std.posix.kill(pid, 0) catch |e| {
+            if (e == error.ProcessNotFound and ok != 0) return error.XcbConnectionFailed;
+        };
+    }
+
+    // X Server detaches from the process.
+    // PID can be fetched from /tmp/X{d}.lock
+    const x_pid = try getXPid(display_num);
+
+    xorg_pid = try std.posix.fork();
+    if (xorg_pid == 0) {
+        var cmd_buffer: [1024]u8 = undefined;
+        const cmd_str = std.fmt.bufPrintZ(&cmd_buffer, "{s} {s}", .{ config.x_cmd_setup, desktop_cmd }) catch std.process.exit(1);
+        const args = [_:null]?[*:0]const u8{ shell, "-c", cmd_str };
+        std.posix.execveZ(shell, &args, std.c.environ) catch {};
+        std.process.exit(1);
+    }
+
+    // If we receive SIGTERM, clean up by killing the xorg_pid process
+    const act = std.posix.Sigaction{
+        .handler = .{ .handler = &xorgSignalHandler },
+        .mask = std.posix.empty_sigset,
+        .flags = 0,
+    };
+    try std.posix.sigaction(std.posix.SIG.TERM, &act, null);
+
+    _ = std.posix.waitpid(xorg_pid, 0);
+    interop.xcb.xcb_disconnect(xcb);
+
+    std.posix.kill(x_pid, 0) catch return;
+    std.posix.kill(x_pid, std.posix.SIG.TERM) catch {};
+
+    var status: c_int = 0;
+    _ = std.c.waitpid(x_pid, &status, 0);
+}
+
+fn addUtmpEntry(entry: *Utmp, username: [*:0]const u8, pid: c_int) !void {
+    entry.ut_type = utmp.USER_PROCESS;
+    entry.ut_pid = pid;
+
+    var buf: [4096]u8 = undefined;
+    const ttyname = try std.os.getFdPath(std.posix.STDIN_FILENO, &buf);
+
+    var ttyname_buf: [32]u8 = undefined;
+    _ = try std.fmt.bufPrintZ(&ttyname_buf, "{s}", .{ttyname["/dev/".len..]});
+
+    entry.ut_line = ttyname_buf;
+    entry.ut_id = ttyname_buf["tty".len..7].*;
+
+    var username_buf: [32]u8 = undefined;
+    _ = try std.fmt.bufPrintZ(&username_buf, "{s}", .{username});
+
+    entry.ut_user = username_buf;
+
+    var host: [256]u8 = undefined;
+    host[0] = 0;
+    entry.ut_host = host;
+
+    var tv: std.c.timeval = undefined;
+    _ = std.c.gettimeofday(&tv, null);
+
+    entry.ut_tv = .{
+        .tv_sec = @intCast(tv.tv_sec),
+        .tv_usec = @intCast(tv.tv_usec),
+    };
+    entry.ut_addr_v6[0] = 0;
+
+    utmp.setutent();
+    _ = utmp.pututline(entry);
+    utmp.endutent();
+}
+
+fn removeUtmpEntry(entry: *Utmp) void {
+    entry.ut_type = utmp.DEAD_PROCESS;
+    entry.ut_line[0] = 0;
+    entry.ut_user[0] = 0;
+    utmp.setutent();
+    _ = utmp.pututline(entry);
+    utmp.endutent();
+}
+
+fn pamDiagnose(status: c_int) anyerror {
+    return switch (status) {
+        interop.pam.PAM_ACCT_EXPIRED => return error.PamAccountExpired,
+        interop.pam.PAM_AUTH_ERR => return error.PamAuthError,
+        interop.pam.PAM_AUTHINFO_UNAVAIL => return error.PamAuthInfoUnavailable,
+        interop.pam.PAM_BUF_ERR => return error.PamBufferError,
+        interop.pam.PAM_CRED_ERR => return error.PamCredentialsError,
+        interop.pam.PAM_CRED_EXPIRED => return error.PamCredentialsExpired,
+        interop.pam.PAM_CRED_INSUFFICIENT => return error.PamCredentialsInsufficient,
+        interop.pam.PAM_CRED_UNAVAIL => return error.PamCredentialsUnavailable,
+        interop.pam.PAM_MAXTRIES => return error.PamMaximumTries,
+        interop.pam.PAM_NEW_AUTHTOK_REQD => return error.PamNewAuthTokenRequired,
+        interop.pam.PAM_PERM_DENIED => return error.PamPermissionDenied,
+        interop.pam.PAM_SESSION_ERR => return error.PamSessionError,
+        interop.pam.PAM_SYSTEM_ERR => return error.PamSystemError,
+        interop.pam.PAM_USER_UNKNOWN => return error.PamUserUnknown,
+        else => return error.PamAbort,
+    };
+}

src/bigclock.h

@@ -1,146 +0,0 @@
-#include <stdint.h>
-
-#define CLOCK_W 5
-#define CLOCK_H 5
-
-#if defined(__linux__) || defined(__FreeBSD__)
-	#define X 0x2593
-	#define _ 0x0000
-#else
-	#define X '#'
-	#define _ 0
-#endif
-
-#if CLOCK_W == 5 && CLOCK_H == 5
-
-uint32_t CLOCK_0[] = {
-	X,X,X,X,X,
-	X,X,_,X,X,
-	X,X,_,X,X,
-	X,X,_,X,X,
-	X,X,X,X,X
-};
-
-uint32_t CLOCK_1[] = {
-	_,_,_,X,X,
-	_,_,_,X,X,
-	_,_,_,X,X,
-	_,_,_,X,X,
-	_,_,_,X,X
-};
-
-uint32_t CLOCK_2[] = {
-	X,X,X,X,X,
-	_,_,_,X,X,
-	X,X,X,X,X,
-	X,X,_,_,_,
-	X,X,X,X,X
-};
-
-uint32_t CLOCK_3[] = {
-	X,X,X,X,X,
-	_,_,_,X,X,
-	X,X,X,X,X,
-	_,_,_,X,X,
-	X,X,X,X,X
-};
-
-uint32_t CLOCK_4[] = {
-	X,X,_,X,X,
-	X,X,_,X,X,
-	X,X,X,X,X,
-	_,_,_,X,X,
-	_,_,_,X,X
-};
-
-uint32_t CLOCK_5[] = {
-	X,X,X,X,X,
-	X,X,_,_,_,
-	X,X,X,X,X,
-	_,_,_,X,X,
-	X,X,X,X,X
-};
-
-uint32_t CLOCK_6[] = {
-	X,X,X,X,X,
-	X,X,_,_,_,
-	X,X,X,X,X,
-	X,X,_,X,X,
-	X,X,X,X,X,
-};
-
-uint32_t CLOCK_7[] = {
-	X,X,X,X,X,
-	_,_,_,X,X,
-	_,_,_,X,X,
-	_,_,_,X,X,
-	_,_,_,X,X
-};
-
-uint32_t CLOCK_8[] = {
-	X,X,X,X,X,
-	X,X,_,X,X,
-	X,X,X,X,X,
-	X,X,_,X,X,
-	X,X,X,X,X
-};
-
-uint32_t CLOCK_9[] = {
-	X,X,X,X,X,
-	X,X,_,X,X,
-	X,X,X,X,X,
-	_,_,_,X,X,
-	X,X,X,X,X
-};
-
-uint32_t CLOCK_S[] = {
-	_,_,_,_,_,
-	_,_,X,_,_,
-	_,_,_,_,_,
-	_,_,X,_,_,
-	_,_,_,_,_
-};
-
-uint32_t CLOCK_E[] = {
-	_,_,_,_,_,
-	_,_,_,_,_,
-	_,_,_,_,_,
-	_,_,_,_,_,
-	_,_,_,_,_
-};
-
-#endif
-
-#undef X
-#undef _
-
-static inline uint32_t* CLOCK_N(char c)
-{
-	switch(c)
-	{
-		case '0':
-			return CLOCK_0;
-		case '1':
-			return CLOCK_1;
-		case '2':
-			return CLOCK_2;
-		case '3':
-			return CLOCK_3;
-		case '4':
-			return CLOCK_4;
-		case '5':
-			return CLOCK_5;
-		case '6':
-			return CLOCK_6;
-		case '7':
-			return CLOCK_7;
-		case '8':
-			return CLOCK_8;
-		case '9':
-			return CLOCK_9;
-		case ':':
-			return CLOCK_S;
-		default:
-			return CLOCK_E;
-	}
-}

src/bigclock.zig

@@ -0,0 +1,140 @@
+const std = @import("std");
+const builtin = @import("builtin");
+const interop = @import("interop.zig");
+const utils = @import("tui/utils.zig");
+
+const termbox = interop.termbox;
+
+const X: u32 = if (builtin.os.tag == .linux or builtin.os.tag.isBSD()) 0x2593 else '#';
+const O: u32 = 0;
+
+pub const WIDTH = 5;
+pub const HEIGHT = 5;
+pub const SIZE = WIDTH * HEIGHT;
+
+// zig fmt: off
+const ZERO = [_]u21{
+    X,X,X,X,X,
+    X,X,O,X,X,
+    X,X,O,X,X,
+    X,X,O,X,X,
+    X,X,X,X,X,
+};
+const ONE = [_]u21{
+    O,O,O,X,X,
+    O,O,O,X,X,
+    O,O,O,X,X,
+    O,O,O,X,X,
+    O,O,O,X,X,
+};
+const TWO = [_]u21{
+    X,X,X,X,X,
+    O,O,O,X,X,
+    X,X,X,X,X,
+    X,X,O,O,O,
+    X,X,X,X,X,
+};
+const THREE = [_]u21{
+    X,X,X,X,X,
+    O,O,O,X,X,
+    X,X,X,X,X,
+    O,O,O,X,X,
+    X,X,X,X,X,
+};
+const FOUR = [_]u21{
+    X,X,O,X,X,
+    X,X,O,X,X,
+    X,X,X,X,X,
+    O,O,O,X,X,
+    O,O,O,X,X,
+};
+const FIVE = [_]u21{
+    X,X,X,X,X,
+    X,X,O,O,O,
+    X,X,X,X,X,
+    O,O,O,X,X,
+    X,X,X,X,X,
+};
+const SIX = [_]u21{
+    X,X,X,X,X,
+    X,X,O,O,O,
+    X,X,X,X,X,
+    X,X,O,X,X,
+    X,X,X,X,X,
+};
+const SEVEN = [_]u21{
+    X,X,X,X,X,
+    O,O,O,X,X,
+    O,O,O,X,X,
+    O,O,O,X,X,
+    O,O,O,X,X,
+};
+const EIGHT = [_]u21{
+    X,X,X,X,X,
+    X,X,O,X,X,
+    X,X,X,X,X,
+    X,X,O,X,X,
+    X,X,X,X,X,
+};
+const NINE = [_]u21{
+    X,X,X,X,X,
+    X,X,O,X,X,
+    X,X,X,X,X,
+    O,O,O,X,X,
+    X,X,X,X,X,
+};
+const S = [_]u21{
+    O,O,O,O,O,
+    O,O,X,O,O,
+    O,O,O,O,O,
+    O,O,X,O,O,
+    O,O,O,O,O,
+};
+const E = [_]u21{
+    O,O,O,O,O,
+    O,O,O,O,O,
+    O,O,O,O,O,
+    O,O,O,O,O,
+    O,O,O,O,O,
+};
+// zig fmt: on
+
+pub fn clockCell(animate: bool, char: u8, fg: u8, bg: u8) [SIZE]termbox.tb_cell {
+    var cells: [SIZE]termbox.tb_cell = undefined;
+
+    var tv: std.c.timeval = undefined;
+    _ = std.c.gettimeofday(&tv, null);
+
+    const clock_chars = toBigNumber(if (animate and char == ':' and @divTrunc(tv.tv_usec, 500000) != 0) ' ' else char);
+    for (0..cells.len) |i| cells[i] = utils.initCell(clock_chars[i], fg, bg);
+
+    return cells;
+}
+
+pub fn alphaBlit(buffer: [*]termbox.tb_cell, x: u64, y: u64, tb_width: u64, tb_height: u64, cells: [SIZE]termbox.tb_cell) void {
+    if (x + WIDTH >= tb_width or y + HEIGHT >= tb_height) return;
+
+    for (0..HEIGHT) |yy| {
+        for (0..WIDTH) |xx| {
+            const cell = cells[yy * WIDTH + xx];
+            if (cell.ch != 0) buffer[(y + yy) * tb_width + (x + xx)] = cell;
+        }
+    }
+}
+
+fn toBigNumber(char: u8) []const u21 {
+    return switch (char) {
+        '0' => &ZERO,
+        '1' => &ONE,
+        '2' => &TWO,
+        '3' => &THREE,
+        '4' => &FOUR,
+        '5' => &FIVE,
+        '6' => &SIX,
+        '7' => &SEVEN,
+        '8' => &EIGHT,
+        '9' => &NINE,
+        ':' => &S,
+        else => &E,
+    };
+}

src/config.c

@@ -1,378 +0,0 @@
-#include "configator.h"
-
-#include "config.h"
-
-#include <stdbool.h>
-#include <stddef.h>
-#include <stdint.h>
-#include <stdlib.h>
-#include <string.h>
-#include <stdio.h>
-#include <unistd.h>
-
-#ifndef DEBUG
-	#define INI_LANG DATADIR "/lang/%s.ini"
-	#define INI_CONFIG "/etc/ly/config.ini"
-#else
-	#define INI_LANG "../res/lang/%s.ini"
-	#define INI_CONFIG "../res/config.ini"
-#endif
-
-static void lang_handle(void* data, char** pars, const int pars_count)
-{
-	if (*((char**)data) != NULL)
-	{
-		free (*((char**)data));
-	}
-
-	*((char**)data) = strdup(*pars);
-}
-
-static void config_handle_u8(void* data, char** pars, const int pars_count)
-{
-	if (strcmp(*pars, "") == 0)
-	{
-		*((uint8_t*)data) = 0;
-	}
-	else
-	{
-		*((uint8_t*)data) = atoi(*pars);
-	}
-}
-
-static void config_handle_u16(void* data, char** pars, const int pars_count)
-{
-	if (strcmp(*pars, "") == 0)
-	{
-		*((uint16_t*)data) = 0;
-	}
-	else
-	{
-		*((uint16_t*)data) = atoi(*pars);
-	}
-}
-
-void config_handle_str(void* data, char** pars, const int pars_count)
-{
-	if (*((char**)data) != NULL)
-	{
-		free(*((char**)data));
-	}
-
-	*((char**)data) = strdup(*pars);
-}
-
-static void config_handle_char(void* data, char** pars, const int pars_count)
-{
-	*((char*)data) = **pars;
-}
-
-static void config_handle_bool(void* data, char** pars, const int pars_count)
-{
-	*((bool*)data) = (strcmp("true", *pars) == 0);
-}
-
-void lang_load()
-{
-	// must be alphabetically sorted
-	struct configator_param map_no_section[] =
-	{
-		{"capslock", &lang.capslock, lang_handle},
-		{"err_alloc", &lang.err_alloc, lang_handle},
-		{"err_bounds", &lang.err_bounds, lang_handle},
-		{"err_chdir", &lang.err_chdir, lang_handle},
-		{"err_console_dev", &lang.err_console_dev, lang_handle},
-		{"err_dgn_oob", &lang.err_dgn_oob, lang_handle},
-		{"err_domain", &lang.err_domain, lang_handle},
-		{"err_hostname", &lang.err_hostname, lang_handle},
-		{"err_mlock", &lang.err_mlock, lang_handle},
-		{"err_null", &lang.err_null, lang_handle},
-		{"err_pam", &lang.err_pam, lang_handle},
-		{"err_pam_abort", &lang.err_pam_abort, lang_handle},
-		{"err_pam_acct_expired", &lang.err_pam_acct_expired, lang_handle},
-		{"err_pam_auth", &lang.err_pam_auth, lang_handle},
-		{"err_pam_authinfo_unavail", &lang.err_pam_authinfo_unavail, lang_handle},
-		{"err_pam_authok_reqd", &lang.err_pam_authok_reqd, lang_handle},
-		{"err_pam_buf", &lang.err_pam_buf, lang_handle},
-		{"err_pam_cred_err", &lang.err_pam_cred_err, lang_handle},
-		{"err_pam_cred_expired", &lang.err_pam_cred_expired, lang_handle},
-		{"err_pam_cred_insufficient", &lang.err_pam_cred_insufficient, lang_handle},
-		{"err_pam_cred_unavail", &lang.err_pam_cred_unavail, lang_handle},
-		{"err_pam_maxtries", &lang.err_pam_maxtries, lang_handle},
-		{"err_pam_perm_denied", &lang.err_pam_perm_denied, lang_handle},
-		{"err_pam_session", &lang.err_pam_session, lang_handle},
-		{"err_pam_sys", &lang.err_pam_sys, lang_handle},
-		{"err_pam_user_unknown", &lang.err_pam_user_unknown, lang_handle},
-		{"err_path", &lang.err_path, lang_handle},
-		{"err_perm_dir", &lang.err_perm_dir, lang_handle},
-		{"err_perm_group", &lang.err_perm_group, lang_handle},
-		{"err_perm_user", &lang.err_perm_user, lang_handle},
-		{"err_pwnam", &lang.err_pwnam, lang_handle},
-		{"err_user_gid", &lang.err_user_gid, lang_handle},
-		{"err_user_init", &lang.err_user_init, lang_handle},
-		{"err_user_uid", &lang.err_user_uid, lang_handle},
-		{"err_xsessions_dir", &lang.err_xsessions_dir, lang_handle},
-		{"err_xsessions_open", &lang.err_xsessions_open, lang_handle},
-		{"f1", &lang.f1, lang_handle},
-		{"f2", &lang.f2, lang_handle},
-		{"login", &lang.login, lang_handle},
-		{"logout", &lang.logout, lang_handle},
-		{"numlock", &lang.numlock, lang_handle},
-		{"password", &lang.password, lang_handle},
-		{"shell", &lang.shell, lang_handle},
-		{"wayland", &lang.wayland, lang_handle},
-		{"xinitrc", &lang.xinitrc, lang_handle},
-	};
-
-	uint16_t map_len[] = {45};
-	struct configator_param* map[] =
-	{
-		map_no_section,
-	};
-
-	uint16_t sections_len = 0;
-	struct configator_param* sections = NULL;
-
-	struct configator lang;
-	lang.map = map;
-	lang.map_len = map_len;
-	lang.sections = sections;
-	lang.sections_len = sections_len;
-
-	char file[256];
-	snprintf(file, 256, INI_LANG, config.lang);
-
-	if (access(file, F_OK) != -1)
-	{
-		configator(&lang, file);
-	}
-}
-
-void config_load(const char *cfg_path)
-{
-	if (cfg_path == NULL)
-	{
-		cfg_path = INI_CONFIG;
-	}
-	// must be alphabetically sorted
-	struct configator_param map_no_section[] =
-	{
-		{"animate", &config.animate, config_handle_bool},
-		{"animation", &config.animation, config_handle_u8},
-		{"asterisk", &config.asterisk, config_handle_char},
-		{"bg", &config.bg, config_handle_u8},
-		{"bigclock", &config.bigclock, config_handle_bool},
-		{"blank_box", &config.blank_box, config_handle_bool},
-		{"blank_password", &config.blank_password, config_handle_bool},
-		{"clock", &config.clock, config_handle_str},
-		{"console_dev", &config.console_dev, config_handle_str},
-		{"default_input", &config.default_input, config_handle_u8},
-		{"fg", &config.fg, config_handle_u8},
-		{"hide_borders", &config.hide_borders, config_handle_bool},
-		{"hide_f1_commands", &config.hide_f1_commands, config_handle_bool},
-		{"input_len", &config.input_len, config_handle_u8},
-		{"lang", &config.lang, config_handle_str},
-		{"load", &config.load, config_handle_bool},
-		{"margin_box_h", &config.margin_box_h, config_handle_u8},
-		{"margin_box_v", &config.margin_box_v, config_handle_u8},
-		{"max_desktop_len", &config.max_desktop_len, config_handle_u8},
-		{"max_login_len", &config.max_login_len, config_handle_u8},
-		{"max_password_len", &config.max_password_len, config_handle_u8},
-		{"mcookie_cmd", &config.mcookie_cmd, config_handle_str},
-		{"min_refresh_delta", &config.min_refresh_delta, config_handle_u16},
-		{"path", &config.path, config_handle_str},
-		{"restart_cmd", &config.restart_cmd, config_handle_str},
-		{"save", &config.save, config_handle_bool},
-		{"save_file", &config.save_file, config_handle_str},
-		{"service_name", &config.service_name, config_handle_str},
-		{"shutdown_cmd", &config.shutdown_cmd, config_handle_str},
-		{"term_reset_cmd", &config.term_reset_cmd, config_handle_str},
-		{"tty", &config.tty, config_handle_u8},
-		{"wayland_cmd", &config.wayland_cmd, config_handle_str},
-		{"wayland_specifier", &config.wayland_specifier, config_handle_bool},
-		{"waylandsessions", &config.waylandsessions, config_handle_str},
-		{"x_cmd", &config.x_cmd, config_handle_str},
-		{"xinitrc", &config.xinitrc, config_handle_str},
-		{"x_cmd_setup", &config.x_cmd_setup, config_handle_str},
-		{"xauth_cmd", &config.xauth_cmd, config_handle_str},
-		{"xsessions", &config.xsessions, config_handle_str},
-	};
-
-	uint16_t map_len[] = {34};
-	struct configator_param* map[] =
-	{
-		map_no_section,
-	};
-
-	uint16_t sections_len = 0;
-	struct configator_param* sections = NULL;
-
-	struct configator config;
-	config.map = map;
-	config.map_len = map_len;
-	config.sections = sections;
-	config.sections_len = sections_len;
-
-	configator(&config, (char *) cfg_path);
-}
-
-void lang_defaults()
-{
-	lang.capslock = strdup("capslock");
-	lang.err_alloc = strdup("failed memory allocation");
-	lang.err_bounds = strdup("out-of-bounds index");
-	lang.err_chdir = strdup("failed to open home folder");
-	lang.err_console_dev = strdup("failed to access console");
-	lang.err_dgn_oob = strdup("log message");
-	lang.err_domain = strdup("invalid domain");
-	lang.err_hostname = strdup("failed to get hostname");
-	lang.err_mlock = strdup("failed to lock password memory");
-	lang.err_null = strdup("null pointer");
-	lang.err_pam = strdup("pam transaction failed");
-	lang.err_pam_abort = strdup("pam transaction aborted");
-	lang.err_pam_acct_expired = strdup("account expired");
-	lang.err_pam_auth = strdup("authentication error");
-	lang.err_pam_authinfo_unavail = strdup("failed to get user info");
-	lang.err_pam_authok_reqd = strdup("token expired");
-	lang.err_pam_buf = strdup("memory buffer error");
-	lang.err_pam_cred_err = strdup("failed to set credentials");
-	lang.err_pam_cred_expired = strdup("credentials expired");
-	lang.err_pam_cred_insufficient = strdup("insufficient credentials");
-	lang.err_pam_cred_unavail = strdup("failed to get credentials");
-	lang.err_pam_maxtries = strdup("reached maximum tries limit");
-	lang.err_pam_perm_denied = strdup("permission denied");
-	lang.err_pam_session = strdup("session error");
-	lang.err_pam_sys = strdup("system error");
-	lang.err_pam_user_unknown = strdup("unknown user");
-	lang.err_path = strdup("failed to set path");
-	lang.err_perm_dir = strdup("failed to change current directory");
-	lang.err_perm_group = strdup("failed to downgrade group permissions");
-	lang.err_perm_user = strdup("failed to downgrade user permissions");
-	lang.err_pwnam = strdup("failed to get user info");
-	lang.err_user_gid = strdup("failed to set user GID");
-	lang.err_user_init = strdup("failed to initialize user");
-	lang.err_user_uid = strdup("failed to set user UID");
-	lang.err_xsessions_dir = strdup("failed to find sessions folder");
-	lang.err_xsessions_open = strdup("failed to open sessions folder");
-	lang.f1 = strdup("F1 shutdown");
-	lang.f2 = strdup("F2 reboot");
-	lang.login = strdup("login:");
-	lang.logout = strdup("logged out");
-	lang.numlock = strdup("numlock");
-	lang.password = strdup("password:");
-	lang.shell = strdup("shell");
-	lang.wayland = strdup("wayland");
-	lang.xinitrc = strdup("xinitrc");
-}
-
-void config_defaults()
-{
-	config.animate = false;
-	config.animation = 0;
-	config.asterisk = '*';
-	config.bg = 0;
-	config.bigclock = false;
-	config.blank_box = true;
-	config.blank_password = false;
-	config.clock = NULL;
-	config.console_dev = strdup("/dev/console");
-	config.default_input = LOGIN_INPUT;
-	config.fg = 9;
-	config.hide_borders = false;
-	config.input_len = 34;
-	config.lang = strdup("en");
-	config.load = true;
-	config.margin_box_h = 2;
-	config.margin_box_v = 1;
-	config.max_desktop_len = 100;
-	config.max_login_len = 255;
-	config.max_password_len = 255;
-	config.mcookie_cmd = strdup("/usr/bin/mcookie");
-	config.min_refresh_delta = 5;
-	config.path = strdup("/sbin:/bin:/usr/local/sbin:/usr/local/bin:/usr/bin:/usr/sbin");
-	config.restart_cmd = strdup("/sbin/shutdown -r now");
-	config.save = true;
-	config.save_file = strdup("/etc/ly/save");
-	config.service_name = strdup("ly");
-	config.shutdown_cmd = strdup("/sbin/shutdown -a now");
-	config.term_reset_cmd = strdup("/usr/bin/tput reset");
-	config.tty = 2;
-	config.wayland_cmd = strdup(DATADIR "/wsetup.sh");
-	config.wayland_specifier = false;
-	config.waylandsessions = strdup("/usr/share/wayland-sessions");
-	config.x_cmd = strdup("/usr/bin/X");
-	config.xinitrc = strdup("~/.xinitrc");
-	config.x_cmd_setup = strdup(DATADIR "/xsetup.sh");
-	config.xauth_cmd = strdup("/usr/bin/xauth");
-	config.xsessions = strdup("/usr/share/xsessions");
-}
-
-void lang_free()
-{
-	free(lang.capslock);
-	free(lang.err_alloc);
-	free(lang.err_bounds);
-	free(lang.err_chdir);
-	free(lang.err_console_dev);
-	free(lang.err_dgn_oob);
-	free(lang.err_domain);
-	free(lang.err_hostname);
-	free(lang.err_mlock);
-	free(lang.err_null);
-	free(lang.err_pam);
-	free(lang.err_pam_abort);
-	free(lang.err_pam_acct_expired);
-	free(lang.err_pam_auth);
-	free(lang.err_pam_authinfo_unavail);
-	free(lang.err_pam_authok_reqd);
-	free(lang.err_pam_buf);
-	free(lang.err_pam_cred_err);
-	free(lang.err_pam_cred_expired);
-	free(lang.err_pam_cred_insufficient);
-	free(lang.err_pam_cred_unavail);
-	free(lang.err_pam_maxtries);
-	free(lang.err_pam_perm_denied);
-	free(lang.err_pam_session);
-	free(lang.err_pam_sys);
-	free(lang.err_pam_user_unknown);
-	free(lang.err_path);
-	free(lang.err_perm_dir);
-	free(lang.err_perm_group);
-	free(lang.err_perm_user);
-	free(lang.err_pwnam);
-	free(lang.err_user_gid);
-	free(lang.err_user_init);
-	free(lang.err_user_uid);
-	free(lang.err_xsessions_dir);
-	free(lang.err_xsessions_open);
-	free(lang.f1);
-	free(lang.f2);
-	free(lang.login);
-	free(lang.logout);
-	free(lang.numlock);
-	free(lang.password);
-	free(lang.shell);
-	free(lang.wayland);
-	free(lang.xinitrc);
-}
-
-void config_free()
-{
-	free(config.clock);
-	free(config.console_dev);
-	free(config.lang);
-	free(config.mcookie_cmd);
-	free(config.path);
-	free(config.restart_cmd);
-	free(config.save_file);
-	free(config.service_name);
-	free(config.shutdown_cmd);
-	free(config.term_reset_cmd);
-	free(config.wayland_cmd);
-	free(config.waylandsessions);
-	free(config.x_cmd);
-	free(config.xinitrc);
-	free(config.x_cmd_setup);
-	free(config.xauth_cmd);
-	free(config.xsessions);
-}

src/config.h

@@ -1,116 +0,0 @@
-#ifndef H_LY_CONFIG
-#define H_LY_CONFIG
-
-#include <stdbool.h>
-#include <stdint.h>
-
-enum INPUTS {
-	SESSION_SWITCH,
-	LOGIN_INPUT,
-	PASSWORD_INPUT,
-};
-
-struct lang
-{
-	char* capslock;
-	char* err_alloc;
-	char* err_bounds;
-	char* err_chdir;
-	char* err_console_dev;
-	char* err_dgn_oob;
-	char* err_domain;
-	char* err_hostname;
-	char* err_mlock;
-	char* err_null;
-	char* err_pam;
-	char* err_pam_abort;
-	char* err_pam_acct_expired;
-	char* err_pam_auth;
-	char* err_pam_authinfo_unavail;
-	char* err_pam_authok_reqd;
-	char* err_pam_buf;
-	char* err_pam_cred_err;
-	char* err_pam_cred_expired;
-	char* err_pam_cred_insufficient;
-	char* err_pam_cred_unavail;
-	char* err_pam_maxtries;
-	char* err_pam_perm_denied;
-	char* err_pam_session;
-	char* err_pam_sys;
-	char* err_pam_user_unknown;
-	char* err_path;
-	char* err_perm_dir;
-	char* err_perm_group;
-	char* err_perm_user;
-	char* err_pwnam;
-	char* err_user_gid;
-	char* err_user_init;
-	char* err_user_uid;
-	char* err_xsessions_dir;
-	char* err_xsessions_open;
-	char* f1;
-	char* f2;
-	char* login;
-	char* logout;
-	char* numlock;
-	char* password;
-	char* shell;
-	char* wayland;
-	char* xinitrc;
-};
-
-struct config
-{
-	bool animate;
-	uint8_t animation;
-	char asterisk;
-	uint8_t bg;
-	bool bigclock;
-	bool blank_box;
-	bool blank_password;
-	char* clock;
-	char* console_dev;
-	uint8_t default_input;
-	uint8_t fg;
-	bool hide_borders;
-	bool hide_f1_commands;
-	uint8_t input_len;
-	char* lang;
-	bool load;
-	uint8_t margin_box_h;
-	uint8_t margin_box_v;
-	uint8_t max_desktop_len;
-	uint8_t max_login_len;
-	uint8_t max_password_len;
-	char* mcookie_cmd;
-	uint16_t min_refresh_delta;
-	char* path;
-	char* restart_cmd;
-	bool save;
-	char* save_file;
-	char* service_name;
-	char* shutdown_cmd;
-	char* term_reset_cmd;
-	uint8_t tty;
-	char* wayland_cmd;
-	bool wayland_specifier;
-	char* waylandsessions;
-	char* x_cmd;
-	char* xinitrc;
-	char* x_cmd_setup;
-	char* xauth_cmd;
-	char* xsessions;
-};
-
-extern struct lang lang;
-extern struct config config;
-
-void config_handle_str(void* data, char** pars, const int pars_count);
-void lang_load();
-void config_load(const char *cfg_path);
-void lang_defaults();
-void config_defaults();
-void lang_free();
-void config_free();
-
-#endif

src/config/Config.zig

@@ -0,0 +1,53 @@
+const build_options = @import("build_options");
+const enums = @import("../enums.zig");
+
+const Animation = enums.Animation;
+const Input = enums.Input;
+
+animation: Animation = .none,
+asterisk: u8 = '*',
+bg: u8 = 0,
+bigclock: bool = false,
+blank_box: bool = true,
+border_fg: u8 = 8,
+box_title: ?[]const u8 = null,
+clear_password: bool = false,
+clock: ?[:0]const u8 = null,
+console_dev: [:0]const u8 = "/dev/console",
+default_input: Input = .login,
+fg: u8 = 8,
+hide_borders: bool = false,
+hide_key_hints: bool = false,
+initial_info_text: ?[]const u8 = null,
+input_len: u8 = 34,
+lang: []const u8 = "en",
+load: bool = true,
+margin_box_h: u8 = 2,
+margin_box_v: u8 = 1,
+max_desktop_len: u8 = 100,
+max_login_len: u8 = 255,
+max_password_len: u8 = 255,
+mcookie_cmd: [:0]const u8 = "/usr/bin/mcookie",
+min_refresh_delta: u16 = 5,
+numlock: bool = false,
+path: ?[:0]const u8 = "/sbin:/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin",
+restart_cmd: []const u8 = "/sbin/shutdown -r now",
+restart_key: []const u8 = "F2",
+save: bool = true,
+save_file: []const u8 = "/etc/ly/save",
+service_name: [:0]const u8 = "ly",
+shutdown_cmd: []const u8 = "/sbin/shutdown -a now",
+shutdown_key: []const u8 = "F1",
+sleep_cmd: ?[]const u8 = null,
+sleep_key: []const u8 = "F3",
+term_reset_cmd: [:0]const u8 = "/usr/bin/tput reset",
+term_restore_cursor_cmd: []const u8 = "/usr/bin/tput cnorm",
+tty: u8 = 2,
+vi_mode: bool = false,
+wayland_cmd: []const u8 = build_options.data_directory ++ "/wsetup.sh",
+waylandsessions: []const u8 = "/usr/share/wayland-sessions",
+x_cmd: []const u8 = "/usr/bin/X",
+xinitrc: ?[]const u8 = "~/.xinitrc",
+x_cmd_setup: []const u8 = build_options.data_directory ++ "/xsetup.sh",
+xauth_cmd: []const u8 = "/usr/bin/xauth",
+xsessions: []const u8 = "/usr/share/xsessions",

src/config/Lang.zig

@@ -0,0 +1,56 @@
+authenticating: []const u8 = "authenticating...",
+capslock: []const u8 = "capslock",
+err_alloc: []const u8 = "failed memory allocation",
+err_bounds: []const u8 = "out-of-bounds index",
+err_chdir: []const u8 = "failed to open home folder",
+err_console_dev: []const u8 = "failed to access console",
+err_dgn_oob: []const u8 = "log message",
+err_domain: []const u8 = "invalid domain",
+err_envlist: []const u8 = "failed to get envlist",
+err_hostname: []const u8 = "failed to get hostname",
+err_mcookie: []const u8 = "mcookie command failed",
+err_mlock: []const u8 = "failed to lock password memory",
+err_null: []const u8 = "null pointer",
+err_pam: []const u8 = "pam transaction failed",
+err_pam_abort: []const u8 = "pam transaction aborted",
+err_pam_acct_expired: []const u8 = "account expired",
+err_pam_auth: []const u8 = "authentication error",
+err_pam_authinfo_unavail: []const u8 = "failed to get user info",
+err_pam_authok_reqd: []const u8 = "token expired",
+err_pam_buf: []const u8 = "memory buffer error",
+err_pam_cred_err: []const u8 = "failed to set credentials",
+err_pam_cred_expired: []const u8 = "credentials expired",
+err_pam_cred_insufficient: []const u8 = "insufficient credentials",
+err_pam_cred_unavail: []const u8 = "failed to get credentials",
+err_pam_maxtries: []const u8 = "reached maximum tries limit",
+err_pam_perm_denied: []const u8 = "permission denied",
+err_pam_session: []const u8 = "session error",
+err_pam_sys: []const u8 = "system error",
+err_pam_user_unknown: []const u8 = "unknown user",
+err_path: []const u8 = "failed to set path",
+err_perm_dir: []const u8 = "failed to change current directory",
+err_perm_group: []const u8 = "failed to downgrade group permissions",
+err_perm_user: []const u8 = "failed to downgrade user permissions",
+err_pwnam: []const u8 = "failed to get user info",
+err_unknown: []const u8 = "an unknown error occurred",
+err_user_gid: []const u8 = "failed to set user GID",
+err_user_init: []const u8 = "failed to initialize user",
+err_user_uid: []const u8 = "failed to set user UID",
+err_xauth: []const u8 = "xauth command failed",
+err_xcb_conn: []const u8 = "xcb connection failed",
+err_xsessions_dir: []const u8 = "failed to find sessions folder",
+err_xsessions_open: []const u8 = "failed to open sessions folder",
+insert: []const u8 = "insert",
+login: []const u8 = "login:",
+logout: []const u8 = "logged out",
+normal: []const u8 = "normal",
+numlock: []const u8 = "numlock",
+other: []const u8 = "other",
+password: []const u8 = "password:",
+restart: []const u8 = "reboot",
+shell: [:0]const u8 = "shell",
+shutdown: []const u8 = "shutdown",
+sleep: []const u8 = "sleep",
+wayland: []const u8 = "wayland",
+xinitrc: [:0]const u8 = "xinitrc",
+x11: []const u8 = "x11",

src/config/Save.zig

@@ -0,0 +1,2 @@
+user: ?[]const u8 = null,
+session_index: ?u64 = null,

src/config/migrator.zig

@@ -0,0 +1,42 @@
+// The migrator ensures compatibility with <=0.6.0 configuration files
+
+const std = @import("std");
+const ini = @import("zigini");
+const Save = @import("Save.zig");
+
+pub fn configFieldHandler(_: std.mem.Allocator, field: ini.IniField) ?ini.IniField {
+    var mapped_field = field;
+
+    if (std.mem.eql(u8, field.key, "blank_password")) {
+        mapped_field.key = "clear_password";
+    }
+
+    return mapped_field;
+}
+
+pub fn tryMigrateSaveFile(user_buf: *[32]u8, path: []const u8) Save {
+    var save = Save{};
+
+    var file = std.fs.openFileAbsolute(path, .{}) catch return save;
+    defer file.close();
+
+    const reader = file.reader();
+
+    var user_fbs = std.io.fixedBufferStream(user_buf);
+    reader.streamUntilDelimiter(user_fbs.writer(), '\n', 32) catch return save;
+    const user = user_fbs.getWritten();
+    if (user.len > 0) save.user = user;
+
+    var session_buf: [20]u8 = undefined;
+    var session_fbs = std.io.fixedBufferStream(&session_buf);
+    reader.streamUntilDelimiter(session_fbs.writer(), '\n', 20) catch {};
+
+    const session_index_str = session_fbs.getWritten();
+    var session_index: ?u64 = null;
+    if (session_index_str.len > 0) {
+        session_index = std.fmt.parseUnsigned(u64, session_index_str, 10) catch return save;
+    }
+    save.session_index = session_index;
+
+    return save;
+}

src/dragonfail_error.h

@@ -1,27 +0,0 @@
-#ifndef H_DRAGONFAIL_ERROR
-#define H_DRAGONFAIL_ERROR
-
-enum dgn_error
-{
-	DGN_OK, // do not remove
-
-	DGN_NULL,
-	DGN_ALLOC,
-	DGN_BOUNDS,
-	DGN_DOMAIN,
-	DGN_MLOCK,
-	DGN_XSESSIONS_DIR,
-	DGN_XSESSIONS_OPEN,
-	DGN_PATH,
-	DGN_CHDIR,
-	DGN_PWNAM,
-	DGN_USER_INIT,
-	DGN_USER_GID,
-	DGN_USER_UID,
-	DGN_PAM,
-	DGN_HOSTNAME,
-
-	DGN_SIZE, // do not remove
-};
-
-#endif

src/draw.c

@@ -1,997 +0,0 @@
-#include "dragonfail.h"
-#include "termbox.h"
-
-#include "inputs.h"
-#include "utils.h"
-#include "config.h"
-#include "draw.h"
-#include "bigclock.h"
-
-#include <ctype.h>
-#include <fcntl.h>
-#include <stdbool.h>
-#include <stdint.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/ioctl.h>
-#include <sys/stat.h>
-#include <sys/time.h>
-#include <unistd.h>
-#include <time.h>
-
-#if defined(__DragonFly__) || defined(__FreeBSD__)
-	#include <sys/kbio.h>
-#else // linux
-	#include <linux/kd.h>
-#endif
-
-#define DOOM_STEPS 13
-
-void draw_init(struct term_buf* buf)
-{
-	buf->width = tb_width();
-	buf->height = tb_height();
-	hostname(&buf->info_line);
-
-	uint16_t len_login = strlen(lang.login);
-	uint16_t len_password = strlen(lang.password);
-
-	if (len_login > len_password)
-	{
-		buf->labels_max_len = len_login;
-	}
-	else
-	{
-		buf->labels_max_len = len_password;
-	}
-
-	buf->box_height = 7 + (2 * config.margin_box_v);
-	buf->box_width =
-		(2 * config.margin_box_h)
-		+ (config.input_len + 1)
-		+ buf->labels_max_len;
-
-#if defined(__linux__) || defined(__FreeBSD__)
-	buf->box_chars.left_up = 0x250c;
-	buf->box_chars.left_down = 0x2514;
-	buf->box_chars.right_up = 0x2510;
-	buf->box_chars.right_down = 0x2518;
-	buf->box_chars.top = 0x2500;
-	buf->box_chars.bot = 0x2500;
-	buf->box_chars.left = 0x2502;
-	buf->box_chars.right = 0x2502;
-#else
-	buf->box_chars.left_up = '+';
-	buf->box_chars.left_down = '+';
-	buf->box_chars.right_up = '+';
-	buf->box_chars.right_down= '+';
-	buf->box_chars.top = '-';
-	buf->box_chars.bot = '-';
-	buf->box_chars.left = '|';
-	buf->box_chars.right = '|';
-#endif
-}
-
-static void doom_free(struct term_buf* buf);
-static void matrix_free(struct term_buf* buf);
-
-void draw_free(struct term_buf* buf)
-{
-	if (config.animate)
-	{
-		switch (config.animation)
-		{
-			case 0:
-				doom_free(buf);
-				break;
-			case 1:
-				matrix_free(buf);
-				break;
-		}
-	}
-}
-
-void draw_box(struct term_buf* buf)
-{
-	uint16_t box_x = (buf->width - buf->box_width) / 2;
-	uint16_t box_y = (buf->height - buf->box_height) / 2;
-	uint16_t box_x2 = (buf->width + buf->box_width) / 2;
-	uint16_t box_y2 = (buf->height + buf->box_height) / 2;
-	buf->box_x = box_x;
-	buf->box_y = box_y;
-
-	if (!config.hide_borders)
-	{
-		// corners
-		tb_change_cell(
-			box_x - 1,
-			box_y - 1,
-			buf->box_chars.left_up,
-			config.fg,
-			config.bg);
-		tb_change_cell(
-			box_x2,
-			box_y - 1,
-			buf->box_chars.right_up,
-			config.fg,
-			config.bg);
-		tb_change_cell(
-			box_x - 1,
-			box_y2,
-			buf->box_chars.left_down,
-			config.fg,
-			config.bg);
-		tb_change_cell(
-			box_x2,
-			box_y2,
-			buf->box_chars.right_down,
-			config.fg,
-			config.bg);
-
-		// top and bottom
-		struct tb_cell c1 = {buf->box_chars.top, config.fg, config.bg};
-		struct tb_cell c2 = {buf->box_chars.bot, config.fg, config.bg};
-
-		for (uint16_t i = 0; i < buf->box_width; ++i)
-		{
-			tb_put_cell(
-				box_x + i,
-				box_y - 1,
-				&c1);
-			tb_put_cell(
-				box_x + i,
-				box_y2,
-				&c2);
-		}
-
-		// left and right
-		c1.ch = buf->box_chars.left;
-		c2.ch = buf->box_chars.right;
-
-		for (uint16_t i = 0; i < buf->box_height; ++i)
-		{
-			tb_put_cell(
-				box_x - 1,
-				box_y + i,
-				&c1);
-
-			tb_put_cell(
-				box_x2,
-				box_y + i,
-				&c2);
-		}
-	}
-
-	if (config.blank_box)
-	{
-		struct tb_cell blank = {' ', config.fg, config.bg};
-
-		for (uint16_t i = 0; i < buf->box_height; ++i)
-		{
-			for (uint16_t k = 0; k < buf->box_width; ++k)
-			{
-				tb_put_cell(
-					box_x + k,
-					box_y + i,
-					&blank);
-			}
-		}
-	}
-}
-
-char* time_str(char* fmt, int maxlen)
-{
-	time_t timer;
-	char* buffer = malloc(maxlen);
-	struct tm* tm_info;
-
-	timer = time(NULL);
-	tm_info = localtime(&timer);
-
-	if (strftime(buffer, maxlen, fmt, tm_info) == 0)
-    {
-        buffer[0] = '\0';
-    }
-	
-	return buffer;
-}
-
-extern inline uint32_t* CLOCK_N(char c);
-
-struct tb_cell* clock_cell(char c)
-{
-	struct tb_cell* cells = malloc(sizeof(struct tb_cell) * CLOCK_W * CLOCK_H);
-
-	struct timeval tv;
-	gettimeofday(&tv, NULL);
-	if (config.animate && c == ':' && tv.tv_usec / 500000)
-    {
-        c = ' ';
-    }
-	uint32_t* clockchars = CLOCK_N(c);
-
-	for (int i = 0; i < CLOCK_W * CLOCK_H; i++)
-	{
-		cells[i].ch = clockchars[i];
-		cells[i].fg = config.fg;
-		cells[i].bg = config.bg;
-	}
-
-	return cells;
-}
-
-void alpha_blit(struct tb_cell* buf, uint16_t x, uint16_t y, uint16_t w, uint16_t h, struct tb_cell* cells)
-{
-	if (x + w >= tb_width() || y + h >= tb_height())
-		return;
-
-	for (int i = 0; i < h; i++)
-	{
-		for (int j = 0; j < w; j++)
-		{
-			struct tb_cell cell = cells[i * w + j];
-			if (cell.ch)
-            {
-                buf[(y + i) * tb_width() + (x + j)] = cell;
-            }
-		}
-	}
-}
-
-void draw_bigclock(struct term_buf* buf)
-{
-	if (!config.bigclock)
-    {
-        return;
-    }
-
-	int xo = buf->width / 2 - (5 * (CLOCK_W + 1)) / 2;
-	int yo = (buf->height - buf->box_height) / 2 - CLOCK_H - 2;
-
-	char* clockstr = time_str("%H:%M", 6);
-	struct tb_cell* clockcell;
-
-	for (int i = 0; i < 5; i++)
-	{
-		clockcell = clock_cell(clockstr[i]);
-		alpha_blit(tb_cell_buffer(), xo + i * (CLOCK_W + 1), yo, CLOCK_W, CLOCK_H, clockcell);
-		free(clockcell);
-	}
-
-	free(clockstr);
-}
-
-void draw_clock(struct term_buf* buf)
-{
-	if (config.clock == NULL || strlen(config.clock) == 0)
-    {
-        return;
-    }
-
-	char* clockstr = time_str(config.clock, 32);
-	int clockstrlen = strlen(clockstr);
-
-	struct tb_cell* cells = strn_cell(clockstr, clockstrlen);
-	tb_blit(buf->width - clockstrlen, 0, clockstrlen, 1, cells);
-
-	free(clockstr);
-	free(cells);
-}
-
-struct tb_cell* strn_cell(char* s, uint16_t len) // throws
-{
-	struct tb_cell* cells = malloc((sizeof (struct tb_cell)) * len);
-	char* s2 = s;
-	uint32_t c;
-
-	if (cells != NULL)
-	{
-		for (uint16_t i = 0; i < len; ++i)
-		{
-			if ((s2 - s) >= len)
-			{
-				break;
-			}
-
-			s2 += utf8_char_to_unicode(&c, s2);
-
-			cells[i].ch = c;
-			cells[i].bg = config.bg;
-			cells[i].fg = config.fg;
-		}
-	}
-	else
-	{
-		dgn_throw(DGN_ALLOC);
-	}
-
-	return cells;
-}
-
-struct tb_cell* str_cell(char* s) // throws
-{
-	return strn_cell(s, strlen(s));
-}
-
-void draw_labels(struct term_buf* buf) // throws
-{
-	// login text
-	struct tb_cell* login = str_cell(lang.login);
-
-	if (dgn_catch())
-	{
-		dgn_reset();
-	}
-	else
-	{
-		tb_blit(
-			buf->box_x + config.margin_box_h,
-			buf->box_y + config.margin_box_v + 4,
-			strlen(lang.login),
-			1,
-			login);
-		free(login);
-	}
-
-	// password text
-	struct tb_cell* password = str_cell(lang.password);
-
-	if (dgn_catch())
-	{
-		dgn_reset();
-	}
-	else
-	{
-		tb_blit(
-			buf->box_x + config.margin_box_h,
-			buf->box_y + config.margin_box_v + 6,
-			strlen(lang.password),
-			1,
-			password);
-		free(password);
-	}
-
-	if (buf->info_line != NULL)
-	{
-		uint16_t len = strlen(buf->info_line);
-		struct tb_cell* info_cell = str_cell(buf->info_line);
-
-		if (dgn_catch())
-		{
-			dgn_reset();
-		}
-		else
-		{
-			tb_blit(
-				buf->box_x + ((buf->box_width - len) / 2),
-				buf->box_y + config.margin_box_v,
-				len,
-				1,
-				info_cell);
-			free(info_cell);
-		}
-	}
-}
-
-void draw_f_commands()
-{
-	struct tb_cell* f1 = str_cell(lang.f1);
-
-	if (dgn_catch())
-	{
-		dgn_reset();
-	}
-	else
-	{
-		tb_blit(0, 0, strlen(lang.f1), 1, f1);
-		free(f1);
-	}
-
-	struct tb_cell* f2 = str_cell(lang.f2);
-
-	if (dgn_catch())
-	{
-		dgn_reset();
-	}
-	else
-	{
-		tb_blit(strlen(lang.f1) + 1, 0, strlen(lang.f2), 1, f2);
-		free(f2);
-	}
-}
-
-void draw_lock_state(struct term_buf* buf)
-{
-	// get values
-	int fd = open(config.console_dev, O_RDONLY);
-
-	if (fd < 0)
-	{
-		buf->info_line = lang.err_console_dev;
-		return;
-	}
-
-	bool numlock_on;
-	bool capslock_on;
-
-#if defined(__DragonFly__) || defined(__FreeBSD__)
-	int led;
-	ioctl(fd, KDGETLED, &led);
-	numlock_on = led & LED_NUM;
-	capslock_on = led & LED_CAP;
-#else // linux
-	char led;
-	ioctl(fd, KDGKBLED, &led);
-	numlock_on = led & K_NUMLOCK;
-	capslock_on = led & K_CAPSLOCK;
-#endif
-
-	close(fd);
-
-	// print text
-	uint16_t pos_x = buf->width - strlen(lang.numlock);
-
-	if (numlock_on)
-	{
-		struct tb_cell* numlock = str_cell(lang.numlock);
-
-		if (dgn_catch())
-		{
-			dgn_reset();
-		}
-		else
-		{
-			tb_blit(pos_x, 0, strlen(lang.numlock), 1, numlock);
-			free(numlock);
-		}
-	}
-
-	pos_x -= strlen(lang.capslock) + 1;
-
-	if (capslock_on)
-	{
-		struct tb_cell* capslock = str_cell(lang.capslock);
-
-		if (dgn_catch())
-		{
-			dgn_reset();
-		}
-		else
-		{
-			tb_blit(pos_x, 0, strlen(lang.capslock), 1, capslock);
-			free(capslock);
-		}
-	}
-}
-
-void draw_desktop(struct desktop* target)
-{
-	uint16_t len = strlen(target->list[target->cur]);
-
-	if (len > (target->visible_len - 3))
-	{
-		len = target->visible_len - 3;
-	}
-
-	tb_change_cell(
-		target->x,
-		target->y,
-		'<',
-		config.fg,
-		config.bg);
-
-	tb_change_cell(
-		target->x + target->visible_len - 1,
-		target->y,
-		'>',
-		config.fg,
-		config.bg);
-
-	for (uint16_t i = 0; i < len; ++ i)
-	{
-		tb_change_cell(
-			target->x + i + 2,
-			target->y,
-			target->list[target->cur][i],
-			config.fg,
-			config.bg);
-	}
-}
-
-void draw_input(struct text* input)
-{
-	uint16_t len = strlen(input->text);
-	uint16_t visible_len = input->visible_len;
-
-	if (len > visible_len)
-	{
-		len = visible_len;
-	}
-
-	struct tb_cell* cells = strn_cell(input->visible_start, len);
-
-	if (dgn_catch())
-	{
-		dgn_reset();
-	}
-	else
-	{
-		tb_blit(input->x, input->y, len, 1, cells);
-		free(cells);
-
-		struct tb_cell c1 = {' ', config.fg, config.bg};
-
-		for (uint16_t i = input->end - input->visible_start; i < visible_len; ++i)
-		{
-			tb_put_cell(
-				input->x + i,
-				input->y,
-				&c1);
-		}
-	}
-}
-
-void draw_input_mask(struct text* input)
-{
-	uint16_t len = strlen(input->text);
-	uint16_t visible_len = input->visible_len;
-
-	if (len > visible_len)
-	{
-		len = visible_len;
-	}
-
-	struct tb_cell c1 = {config.asterisk, config.fg, config.bg};
-	struct tb_cell c2 = {' ', config.fg, config.bg};
-
-	for (uint16_t i = 0; i < visible_len; ++i)
-	{
-		if (input->visible_start + i < input->end)
-		{
-			tb_put_cell(
-				input->x + i,
-				input->y,
-				&c1);
-		}
-		else
-		{
-			tb_put_cell(
-				input->x + i,
-				input->y,
-				&c2);
-		}
-	}
-}
-
-void position_input(
-	struct term_buf* buf,
-	struct desktop* desktop,
-	struct text* login,
-	struct text* password)
-{
-	uint16_t x = buf->box_x + config.margin_box_h + buf->labels_max_len + 1;
-	int32_t len = buf->box_x + buf->box_width - config.margin_box_h - x;
-
-	if (len < 0)
-	{
-		return;
-	}
-
-	desktop->x = x;
-	desktop->y = buf->box_y + config.margin_box_v + 2;
-	desktop->visible_len = len;
-
-	login->x = x;
-	login->y = buf->box_y + config.margin_box_v + 4;
-	login->visible_len = len;
-
-	password->x = x;
-	password->y = buf->box_y + config.margin_box_v + 6;
-	password->visible_len = len;
-}
-
-static void doom_init(struct term_buf* buf)
-{
-	buf->init_width = buf->width;
-	buf->init_height = buf->height;
-	buf->astate.doom = malloc(sizeof(struct doom_state));
-
-	if (buf->astate.doom == NULL)
-	{
-		dgn_throw(DGN_ALLOC);
-	}
-
-	uint16_t tmp_len = buf->width * buf->height;
-	buf->astate.doom->buf = malloc(tmp_len);
-	tmp_len -= buf->width;
-
-	if (buf->astate.doom->buf == NULL)
-	{
-		dgn_throw(DGN_ALLOC);
-	}
-
-	memset(buf->astate.doom->buf, 0, tmp_len);
-	memset(buf->astate.doom->buf + tmp_len, DOOM_STEPS - 1, buf->width);
-}
-
-static void doom_free(struct term_buf* buf)
-{
-	free(buf->astate.doom->buf);
-	free(buf->astate.doom);
-}
-
-// Adapted from cmatrix
-static void matrix_init(struct term_buf* buf)
-{
-	buf->init_width = buf->width;
-	buf->init_height = buf->height;
-	buf->astate.matrix = malloc(sizeof(struct matrix_state));
-	struct matrix_state* s = buf->astate.matrix;
-
-	if (s == NULL)
-	{
-		dgn_throw(DGN_ALLOC);
-	}
-
-	uint16_t len = buf->height + 1;
-	s->grid = malloc(sizeof(struct matrix_dot*) * len);
-
-	if (s->grid == NULL)
-	{
-		dgn_throw(DGN_ALLOC);
-	}
-
-	len = (buf->height + 1) * buf->width;
-	(s->grid)[0] = malloc(sizeof(struct matrix_dot) * len);
-
-	if ((s->grid)[0] == NULL)
-	{
-		dgn_throw(DGN_ALLOC);
-	}
-
-	for (int i = 1; i <= buf->height; ++i)
-	{
-		s->grid[i] = s->grid[i - 1] + buf->width;
-
-		if (s->grid[i] == NULL)
-		{
-			dgn_throw(DGN_ALLOC);
-		}
-	}
-
-	s->length = malloc(buf->width * sizeof(int));
-
-	if (s->length == NULL)
-	{
-		dgn_throw(DGN_ALLOC);
-	}
-
-	s->spaces = malloc(buf->width * sizeof(int));
-
-	if (s->spaces == NULL)
-	{
-		dgn_throw(DGN_ALLOC);
-	}
-
-	s->updates = malloc(buf->width * sizeof(int));
-
-	if (s->updates == NULL)
-	{
-		dgn_throw(DGN_ALLOC);
-	}
-
-	// Initialize grid
-	for (int i = 0; i <= buf->height; ++i)
-	{
-		for (int j = 0; j <= buf->width - 1; j += 2)
-		{
-			s->grid[i][j].val = -1;
-		}
-	}
-
-	for (int j = 0; j < buf->width; j += 2)
-	{
-		s->spaces[j] = (int) rand() % buf->height + 1;
-		s->length[j] = (int) rand() % (buf->height - 3) + 3;
-		s->grid[1][j].val = ' ';
-		s->updates[j] = (int) rand() % 3 + 1;
-	}
-}
-
-static void matrix_free(struct term_buf* buf)
-{
-	free(buf->astate.matrix->grid[0]);
-	free(buf->astate.matrix->grid);
-	free(buf->astate.matrix->length);
-	free(buf->astate.matrix->spaces);
-	free(buf->astate.matrix->updates);
-	free(buf->astate.matrix);
-}
-
-void animate_init(struct term_buf* buf)
-{
-	if (config.animate)
-	{
-		switch(config.animation)
-		{
-			case 0:
-			{
-				doom_init(buf);
-				break;
-			}
-			case 1:
-			{
-				matrix_init(buf);
-				break;
-			}
-		}
-	}
-}
-
-static void doom(struct term_buf* term_buf)
-{
-	static struct tb_cell fire[DOOM_STEPS] =
-	{
-		{' ', 9, 0}, // default
-		{0x2591, 2, 0}, // red
-		{0x2592, 2, 0}, // red
-		{0x2593, 2, 0}, // red
-		{0x2588, 2, 0}, // red
-		{0x2591, 4, 2}, // yellow
-		{0x2592, 4, 2}, // yellow
-		{0x2593, 4, 2}, // yellow
-		{0x2588, 4, 2}, // yellow
-		{0x2591, 8, 4}, // white
-		{0x2592, 8, 4}, // white
-		{0x2593, 8, 4}, // white
-		{0x2588, 8, 4}, // white
-	};
-
-	uint16_t src;
-	uint16_t random;
-	uint16_t dst;
-
-	uint16_t w = term_buf->init_width;
-	uint8_t* tmp = term_buf->astate.doom->buf;
-
-	if ((term_buf->width != term_buf->init_width) || (term_buf->height != term_buf->init_height))
-	{
-		return;
-	}
-
-	struct tb_cell* buf = tb_cell_buffer();
-
-	for (uint16_t x = 0; x < w; ++x)
-	{
-		for (uint16_t y = 1; y < term_buf->init_height; ++y)
-		{
-			src = y * w + x;
-			random = ((rand() % 7) & 3);
-			dst = src - random + 1;
-
-			if (w > dst)
-			{
-				dst = 0;
-			}
-			else
-			{
-				dst -= w;
-			}
-
-			tmp[dst] = tmp[src] - (random & 1);
-
-			if (tmp[dst] > 12)
-			{
-				tmp[dst] = 0;
-			}
-
-			buf[dst] = fire[tmp[dst]];
-			buf[src] = fire[tmp[src]];
-		}
-	}
-}
-
-// Adapted from cmatrix
-static void matrix(struct term_buf* buf)
-{
-	static int frame = 3;
-	const int frame_delay = 8;
-	static int count = 0;
-	bool first_col;
-	struct matrix_state* s = buf->astate.matrix;
-
-	// Allowed codepoints
-	const int randmin = 33;
-	const int randnum = 123 - randmin;
-	// Chars change mid-scroll
-	const bool changes = true;
-
-	if ((buf->width != buf->init_width) || (buf->height != buf->init_height))
-	{
-		return;
-	}
-
-	count += 1;
-	if (count > frame_delay)
-    {
-		frame += 1;
-		if (frame > 4) frame = 1;
-		count = 0;
-
-		for (int j = 0; j < buf->width; j += 2)
-		{
-			int tail;
-			if (frame > s->updates[j])
-			{
-				if (s->grid[0][j].val == -1 && s->grid[1][j].val == ' ')
-				{
-					if (s->spaces[j] > 0)
-					{
-						s->spaces[j]--;
-					} else {
-						s->length[j] = (int) rand() % (buf->height - 3) + 3;
-						s->grid[0][j].val = (int) rand() % randnum + randmin;
-						s->spaces[j] = (int) rand() % buf->height + 1;
-					}
-				}
-
-				int i = 0, seg_len = 0;
-				first_col = 1;
-				while (i <= buf->height)
-				{
-					// Skip over spaces
-					while (i <= buf->height
-							&& (s->grid[i][j].val == ' ' || s->grid[i][j].val == -1))
-					{
-						i++;
-					}
-
-					if (i > buf->height) break;
-
-					// Find the head of this col
-					tail = i;
-					seg_len = 0;
-					while (i <= buf->height
-							&& (s->grid[i][j].val != ' ' && s->grid[i][j].val != -1))
-					{
-						s->grid[i][j].is_head = false;
-						if (changes)
-						{
-							if (rand() % 8 == 0)
-								s->grid[i][j].val = (int) rand() % randnum + randmin;
-						}
-						i++;
-						seg_len++;
-					}
-
-					// Head's down offscreen
-					if (i > buf->height)
-					{
-						s->grid[tail][j].val = ' ';
-						continue;
-					}
-
-					s->grid[i][j].val = (int) rand() % randnum + randmin;
-					s->grid[i][j].is_head = true;
-
-					if (seg_len > s->length[j] || !first_col) {
-						s->grid[tail][j].val = ' ';
-						s->grid[0][j].val = -1;
-					}
-					first_col = 0;
-					i++;
-				}
-			}
-		}
-	}
-
-	uint32_t blank;
-	utf8_char_to_unicode(&blank, " ");
-
-	for (int j = 0; j < buf->width; j += 2)
-    {
-		for (int i = 1; i <= buf->height; ++i)
-		{
-			uint32_t c;
-			int fg = TB_GREEN;
-			int bg = TB_DEFAULT;
-
-			if (s->grid[i][j].val == -1 || s->grid[i][j].val == ' ')
-			{
-				tb_change_cell(j, i - 1, blank, fg, bg);
-				continue;
-			}
-
-			char tmp[2];
-			tmp[0] = s->grid[i][j].val;
-			tmp[1] = '\0';
-			if(utf8_char_to_unicode(&c, tmp))
-			{
-				if (s->grid[i][j].is_head)
-				{
-					fg = TB_WHITE | TB_BOLD;
-				}
-				tb_change_cell(j, i - 1, c, fg, bg);
-			}
-		}
-	}
-}
-
-void animate(struct term_buf* buf)
-{
-	buf->width = tb_width();
-	buf->height = tb_height();
-
-	if (config.animate)
-	{
-		switch(config.animation)
-		{
-			case 0:
-			{
-				doom(buf);
-				break;
-			}
-			case 1:
-			{
-				matrix(buf);
-				break;
-			}
-		}
-	}
-}
-
-bool cascade(struct term_buf* term_buf, uint8_t* fails)
-{
-	uint16_t width = term_buf->width;
-	uint16_t height = term_buf->height;
-
-	struct tb_cell* buf = tb_cell_buffer();
-	bool changes = false;
-	char c_under;
-	char c;
-
-	for (int i = height - 2; i >= 0; --i)
-	{
-		for (int k = 0; k < width; ++k)
-		{
-			c = buf[i * width + k].ch;
-
-			if (isspace(c))
-			{
-				continue;
-			}
-
-			c_under = buf[(i + 1) * width + k].ch;
-			
-			if (!isspace(c_under))
-			{
-				continue;
-			}
-
-			if (!changes)
-			{
-				changes = true;
-			}
-
-			if ((rand() % 10) > 7)
-			{
-				continue;
-			}
-
-			buf[(i + 1) * width + k] = buf[i * width + k];
-			buf[i * width + k].ch = ' ';
-		}
-	}
-
-	// stop force-updating 
-	if (!changes)
-	{
-		sleep(7);
-		*fails = 0;
-
-		return false;
-	}
-
-	// force-update
-	return true;
-}

src/draw.h

@@ -1,92 +0,0 @@
-#ifndef H_LY_DRAW
-#define H_LY_DRAW
-
-#include "termbox.h"
-#include "inputs.h"
-
-#include <stdbool.h>
-#include <stdint.h>
-
-struct box
-{
-	uint32_t left_up;
-	uint32_t left_down;
-	uint32_t right_up;
-	uint32_t right_down;
-	uint32_t top;
-	uint32_t bot;
-	uint32_t left;
-	uint32_t right;
-};
-
-struct matrix_dot
-{
-	int val;
-	bool is_head;
-};
-
-struct matrix_state
-{
-	struct matrix_dot** grid;
-	int* length;
-	int* spaces;
-	int* updates;
-};
-
-struct doom_state
-{
-	uint8_t* buf;
-};
-
-union anim_state
-{
-	struct doom_state* doom;
-	struct matrix_state* matrix;
-};
-
-struct term_buf
-{
-	uint16_t width;
-	uint16_t height;
-	uint16_t init_width;
-	uint16_t init_height;
-
-	struct box box_chars;
-	char* info_line;
-	uint16_t labels_max_len;
-	uint16_t box_x;
-	uint16_t box_y;
-	uint16_t box_width;
-	uint16_t box_height;
-
-	union anim_state astate;
-};
-
-void draw_init(struct term_buf* buf);
-void draw_free(struct term_buf* buf);
-void draw_box(struct term_buf* buf);
-
-struct tb_cell* strn_cell(char* s, uint16_t len);
-struct tb_cell* str_cell(char* s);
-
-void draw_labels(struct term_buf* buf);
-void draw_f_commands();
-void draw_lock_state(struct term_buf* buf);
-void draw_desktop(struct desktop* target);
-void draw_input(struct text* input);
-void draw_input_mask(struct text* input);
-
-void position_input(
-	struct term_buf* buf,
-	struct desktop* desktop,
-	struct text* login,
-	struct text* password);
-
-void animate_init(struct term_buf* buf);
-void animate(struct term_buf* buf);
-bool cascade(struct term_buf* buf, uint8_t* fails);
-
-void draw_bigclock(struct term_buf *buf);
-void draw_clock(struct term_buf *buf);
-
-#endif

src/enums.zig

@@ -0,0 +1,18 @@
+pub const Animation = enum {
+    none,
+    doom,
+    matrix,
+};
+
+pub const DisplayServer = enum {
+    wayland,
+    shell,
+    xinitrc,
+    x11,
+};
+
+pub const Input = enum {
+    session,
+    login,
+    password,
+};

src/inputs.c

@@ -1,285 +0,0 @@
-#include "dragonfail.h"
-#include "termbox.h"
-#include "inputs.h"
-#include "config.h"
-
-#include <stdint.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/mman.h>
-#include <ctype.h>
-
-void handle_desktop(void* input_struct, struct tb_event* event)
-{
-	struct desktop* target = (struct desktop*) input_struct;
-
-	if ((event != NULL) && (event->type == TB_EVENT_KEY))
-	{
-		if (event->key == TB_KEY_ARROW_LEFT || (event->key == TB_KEY_CTRL_H))
-		{
-			input_desktop_right(target);
-		}
-		else if (event->key == TB_KEY_ARROW_RIGHT || (event->key == TB_KEY_CTRL_L))
-		{
-			input_desktop_left(target);
-		}
-	}
-
-	tb_set_cursor(target->x + 2, target->y);
-}
-
-void handle_text(void* input_struct, struct tb_event* event)
-{
-	struct text* target = (struct text*) input_struct;
-
-	if ((event != NULL) && (event->type == TB_EVENT_KEY))
-	{
-		if (event->key == TB_KEY_ARROW_LEFT)
-		{
-			input_text_left(target);
-		}
-		else if (event->key == TB_KEY_ARROW_RIGHT)
-		{
-			input_text_right(target);
-		}
-		else if (event->key == TB_KEY_DELETE)
-		{
-			input_text_delete(target);
-		}
-		else if ((event->key == TB_KEY_BACKSPACE)
-			|| (event->key == TB_KEY_BACKSPACE2))
-		{
-			input_text_backspace(target);
-		}
-		else if (((event->ch > 31) && (event->ch < 127))
-			|| (event->key == TB_KEY_SPACE))
-		{
-			char buf[7] = {0};
-
-			if (event->key == TB_KEY_SPACE)
-			{
-				buf[0] = ' ';
-			}
-			else
-			{
-				utf8_unicode_to_char(buf, event->ch);
-			}
-
-			input_text_write(target, buf[0]);
-		}
-	}
-
-	tb_set_cursor(
-		target->x + (target->cur - target->visible_start),
-		target->y);
-}
-
-void input_desktop(struct desktop* target)
-{
-	target->list = NULL;
-    target->list_simple = NULL;
-	target->cmd = NULL;
-	target->display_server = NULL;
-	target->cur = 0;
-	target->len = 0;
-
-	input_desktop_add(target, strdup(lang.shell), strdup(""), DS_SHELL);
-	input_desktop_add(target, strdup(lang.xinitrc), strdup(config.xinitrc), DS_XINITRC);
-#if 0
-	input_desktop_add(target, strdup(lang.wayland), strdup(""), DS_WAYLAND);
-#endif
-}
-
-void input_text(struct text* target, uint64_t len)
-{
-	target->text = malloc(len + 1);
-
-	if (target->text == NULL)
-	{
-		dgn_throw(DGN_ALLOC);
-		return;
-	}
-	else
-	{
-		int ok = mlock(target->text, len + 1);
-
-		if (ok < 0)
-		{
-			dgn_throw(DGN_MLOCK);
-			return;
-		}
-
-		memset(target->text, 0, len + 1);
-	}
-
-	target->cur = target->text;
-	target->end = target->text;
-	target->visible_start = target->text;
-	target->len = len;
-	target->x = 0;
-	target->y = 0;
-}
-
-void input_desktop_free(struct desktop* target)
-{
-	if (target != NULL)
-	{
-		for (uint16_t i = 0; i < target->len; ++i)
-		{
-			if (target->list[i] != NULL)
-			{
-				free(target->list[i]);
-			}
-
-			if (target->cmd[i] != NULL)
-			{
-				free(target->cmd[i]);
-			}
-		}
-
-		free(target->list);
-		free(target->cmd);
-		free(target->display_server);
-	}
-}
-
-void input_text_free(struct text* target)
-{
-	memset(target->text, 0, target->len);
-	munlock(target->text, target->len + 1);
-	free(target->text);
-}
-
-void input_desktop_right(struct desktop* target)
-{
-	++(target->cur);
-
-	if (target->cur >= target->len)
-	{
-		target->cur = 0;
-	}
-}
-
-void input_desktop_left(struct desktop* target)
-{
-	--(target->cur);
-
-	if (target->cur >= target->len)
-	{
-		target->cur = target->len - 1;
-	}
-}
-
-void input_desktop_add(
-	struct desktop* target,
-	char* name,
-	char* cmd,
-	enum display_server display_server)
-{
-	++(target->len);
-	target->list = realloc(target->list, target->len * (sizeof (char*)));
-    target->list_simple = realloc(target->list_simple, target->len * (sizeof (char*)));
-    target->cmd = realloc(target->cmd, target->len * (sizeof (char*)));
-	target->display_server = realloc(
-		target->display_server,
-		target->len * (sizeof (enum display_server)));
-	target->cur = target->len - 1;
-
-	if ((target->list == NULL)
-		|| (target->cmd == NULL)
-		|| (target->display_server == NULL))
-	{
-		dgn_throw(DGN_ALLOC);
-		return;
-	}
-
-    target->list[target->cur] = name;
-
-    int name_len = strlen(name);
-    char* name_simple = strdup(name);
-
-    if (strstr(name_simple, " ") != NULL)
-    {
-        name_simple = strtok(name_simple, " ");
-    }
-
-    for (int i = 0; i < name_len; i++)
-    {
-        name_simple[i] = tolower(name_simple[i]);
-    }
-
-    target->list_simple[target->cur] = name_simple;
-    target->cmd[target->cur] = cmd;
-	target->display_server[target->cur] = display_server;
-}
-
-void input_text_right(struct text* target)
-{
-	if (target->cur < target->end)
-	{
-		++(target->cur);
-
-		if ((target->cur - target->visible_start) > target->visible_len)
-		{
-			++(target->visible_start);
-		}
-	}
-}
-
-void input_text_left(struct text* target)
-{
-	if (target->cur > target->text)
-	{
-		--(target->cur);
-
-		if ((target->cur - target->visible_start) < 0)
-		{
-			--(target->visible_start);
-		}
-	}
-}
-
-void input_text_write(struct text* target, char ascii)
-{
-	if (ascii <= 0)
-	{
-		return; // unices do not support usernames and passwords other than ascii
-	}
-
-	if ((target->end - target->text + 1) < target->len)
-	{
-		// moves the text to the right to add space for the new ascii char
-		memcpy(target->cur + 1, target->cur, target->end - target->cur);
-		++(target->end);
-		// adds the new char and moves the cursor to the right
-		*(target->cur) = ascii;
-		input_text_right(target);
-	}
-}
-
-void input_text_delete(struct text* target)
-{
-	if (target->cur < target->end)
-	{
-		// moves the text on the right to overwrite the currently pointed char
-		memcpy(target->cur, target->cur + 1, target->end - target->cur + 1);
-		--(target->end);
-	}
-}
-
-void input_text_backspace(struct text* target)
-{
-	if (target->cur > target->text)
-	{
-		input_text_left(target);
-		input_text_delete(target);
-	}
-}
-
-void input_text_clear(struct text* target)
-{
-	memset(target->text, 0, target->len + 1);
-	target->cur = target->text;
-	target->end = target->text;
-	target->visible_start = target->text;
-}

src/inputs.h

@@ -1,57 +0,0 @@
-#ifndef H_LY_INPUTS
-#define H_LY_INPUTS
-
-#include "termbox.h"
-
-#include <stdint.h>
-
-enum display_server {DS_WAYLAND, DS_SHELL, DS_XINITRC, DS_XORG};
-
-struct text
-{
-	char* text;
-	char* end;
-	int64_t len;
-	char* cur;
-	char* visible_start;
-	uint16_t visible_len;
-
-	uint16_t x;
-	uint16_t y;
-};
-
-struct desktop
-{
-	char** list;
-    char** list_simple;
-	char** cmd;
-	enum display_server* display_server;
-
-	uint16_t cur;
-	uint16_t len;
-	uint16_t visible_len;
-	uint16_t x;
-	uint16_t y;
-};
-
-void handle_desktop(void* input_struct, struct tb_event* event);
-void handle_text(void* input_struct, struct tb_event* event);
-void input_desktop(struct desktop* target);
-void input_text(struct text* target, uint64_t len);
-void input_desktop_free(struct desktop* target);
-void input_text_free(struct text* target);
-void input_desktop_right(struct desktop* target);
-void input_desktop_left(struct desktop* target);
-void input_desktop_add(
-	struct desktop* target,
-	char* name,
-	char* cmd,
-	enum display_server display_server);
-void input_text_right(struct text* target);
-void input_text_left(struct text* target);
-void input_text_write(struct text* target, char ascii);
-void input_text_delete(struct text* target);
-void input_text_backspace(struct text* target);
-void input_text_clear(struct text* target);
-
-#endif

src/interop.zig

@@ -0,0 +1,119 @@
+const std = @import("std");
+const builtin = @import("builtin");
+const Allocator = std.mem.Allocator;
+
+pub const termbox = @import("termbox2");
+
+pub const pam = @cImport({
+    @cInclude("security/pam_appl.h");
+});
+
+pub const utmp = @cImport({
+    @cInclude("utmp.h");
+});
+
+pub const xcb = @cImport({
+    @cInclude("xcb/xcb.h");
+});
+
+pub const c_size = u64;
+pub const c_uid = u32;
+pub const c_gid = u32;
+pub const c_time = c_long;
+pub const tm = extern struct {
+    tm_sec: c_int,
+    tm_min: c_int,
+    tm_hour: c_int,
+    tm_mday: c_int,
+    tm_mon: c_int,
+    tm_year: c_int,
+    tm_wday: c_int,
+    tm_yday: c_int,
+    tm_isdst: c_int,
+};
+pub const passwd = extern struct {
+    pw_name: [*:0]u8,
+    pw_passwd: [*:0]u8,
+
+    pw_uid: c_uid,
+    pw_gid: c_gid,
+    pw_gecos: [*:0]u8,
+    pw_dir: [*:0]u8,
+    pw_shell: [*:0]u8,
+};
+
+pub const VT_ACTIVATE: c_int = 0x5606;
+pub const VT_WAITACTIVE: c_int = 0x5607;
+
+pub const KDGETLED: c_int = 0x4B31;
+pub const KDSETLED: c_int = 0x4B32;
+pub const KDGKBLED: c_int = 0x4B64;
+pub const KDSKBLED: c_int = 0x4B65;
+
+pub const LED_NUM: c_int = 0x02;
+pub const LED_CAP: c_int = 0x04;
+
+pub const K_NUMLOCK: c_int = 0x02;
+pub const K_CAPSLOCK: c_int = 0x04;
+
+pub extern "c" fn localtime(timer: *const c_time) *tm;
+pub extern "c" fn strftime(str: [*:0]u8, maxsize: c_size, format: [*:0]const u8, timeptr: *const tm) c_size;
+pub extern "c" fn setenv(name: [*:0]const u8, value: [*:0]const u8, overwrite: c_int) c_int;
+pub extern "c" fn putenv(name: [*:0]u8) c_int;
+pub extern "c" fn getuid() c_uid;
+pub extern "c" fn getpwnam(name: [*:0]const u8) ?*passwd;
+pub extern "c" fn endpwent() void;
+pub extern "c" fn setusershell() void;
+pub extern "c" fn getusershell() [*:0]u8;
+pub extern "c" fn endusershell() void;
+pub extern "c" fn initgroups(user: [*:0]const u8, group: c_gid) c_int;
+
+pub fn timeAsString(buf: [:0]u8, format: [:0]const u8) ![]u8 {
+    const timer = std.time.timestamp();
+    const tm_info = localtime(&timer);
+
+    const len = strftime(buf, buf.len, format, tm_info);
+    if (len < 0) return error.CannotGetFormattedTime;
+
+    return buf[0..len];
+}
+
+pub fn getLockState(console_dev: [:0]const u8) !struct {
+    numlock: bool,
+    capslock: bool,
+} {
+    const fd = std.c.open(console_dev, .{ .ACCMODE = .RDONLY });
+    if (fd < 0) return error.CannotOpenConsoleDev;
+    defer _ = std.c.close(fd);
+
+    var numlock = false;
+    var capslock = false;
+
+    if (builtin.os.tag.isBSD()) {
+        var led: c_int = undefined;
+        _ = std.c.ioctl(fd, KDGETLED, &led);
+        numlock = (led & LED_NUM) != 0;
+        capslock = (led & LED_CAP) != 0;
+    } else {
+        var led: c_char = undefined;
+        _ = std.c.ioctl(fd, KDGKBLED, &led);
+        numlock = (led & K_NUMLOCK) != 0;
+        capslock = (led & K_CAPSLOCK) != 0;
+    }
+
+    return .{
+        .numlock = numlock,
+        .capslock = capslock,
+    };
+}
+
+pub fn setNumlock(val: bool) !void {
+    var led: c_char = undefined;
+    _ = std.c.ioctl(0, KDGKBLED, &led);
+
+    const numlock = (led & K_NUMLOCK) != 0;
+    if (numlock != val) {
+        const status = std.c.ioctl(std.posix.STDIN_FILENO, KDSKBLED, led ^ K_NUMLOCK);
+        if (status != 0) return error.FailedToSetNumlock;
+    }
+}

src/login.c

@@ -1,715 +0,0 @@
-#include "dragonfail.h"
-#include "termbox.h"
-
-#include "inputs.h"
-#include "draw.h"
-#include "utils.h"
-#include "config.h"
-#include "login.h"
-
-#include <errno.h>
-#include <grp.h>
-#include <pwd.h>
-#include <security/pam_appl.h>
-#include <signal.h>
-#include <stdint.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/stat.h>
-#include <sys/wait.h>
-#include <unistd.h>
-#include <utmp.h>
-#include <xcb/xcb.h>
-
-int get_free_display()
-{
-	char xlock[1024];
-	uint8_t i;
-
-	for (i = 0; i < 200; ++i)
-	{
-		snprintf(xlock, 1024, "/tmp/.X%d-lock", i);
-
-		if (access(xlock, F_OK) == -1)
-		{
-			break;
-		}
-	}
-
-	return i;
-}
-
-void reset_terminal(struct passwd* pwd)
-{
-	pid_t pid = fork();
-
-	if (pid == 0)
-	{
-		execl(pwd->pw_shell, pwd->pw_shell, "-c", config.term_reset_cmd, NULL);
-		exit(EXIT_SUCCESS);
-	}
-
-	int status;
-	waitpid(pid, &status, 0);
-}
-
-int login_conv(
-	int num_msg,
-	const struct pam_message** msg,
-	struct pam_response** resp,
-	void* appdata_ptr)
-{
-	*resp = calloc(num_msg, sizeof (struct pam_response));
-
-	if (*resp == NULL)
-	{
-		return PAM_BUF_ERR;
-	}
-
-	char* username;
-	char* password;
-	int ok = PAM_SUCCESS;
-	int i;
-
-	for (i = 0; i < num_msg; ++i)
-	{
-		switch (msg[i]->msg_style)
-		{
-			case PAM_PROMPT_ECHO_ON:
-			{
-				username = ((char**) appdata_ptr)[0];
-				(*resp)[i].resp = strdup(username);
-				break;
-			}
-			case PAM_PROMPT_ECHO_OFF:
-			{
-				password = ((char**) appdata_ptr)[1];
-				(*resp)[i].resp = strdup(password);
-				break;
-			}
-			case PAM_ERROR_MSG:
-			{
-				ok = PAM_CONV_ERR;
-				break;
-			}
-		}
-
-		if (ok != PAM_SUCCESS)
-		{
-			break;
-		}
-	}
-
-	if (ok != PAM_SUCCESS)
-	{
-		for (i = 0; i < num_msg; ++i)
-		{
-			if ((*resp)[i].resp == NULL)
-			{
-				continue;
-			}
-
-			free((*resp)[i].resp);
-			(*resp)[i].resp = NULL;
-		}
-
-		free(*resp);
-		*resp = NULL;
-	}
-
-	return ok;
-}
-
-void pam_diagnose(int error, struct term_buf* buf)
-{
-	switch (error)
-	{
-		case PAM_ACCT_EXPIRED:
-		{
-			buf->info_line = lang.err_pam_acct_expired;
-			break;
-		}
-		case PAM_AUTH_ERR:
-		{
-			buf->info_line = lang.err_pam_auth;
-			break;
-		}
-		case PAM_AUTHINFO_UNAVAIL:
-		{
-			buf->info_line = lang.err_pam_authinfo_unavail;
-			break;
-		}
-		case PAM_BUF_ERR:
-		{
-			buf->info_line = lang.err_pam_buf;
-			break;
-		}
-		case PAM_CRED_ERR:
-		{
-			buf->info_line = lang.err_pam_cred_err;
-			break;
-		}
-		case PAM_CRED_EXPIRED:
-		{
-			buf->info_line = lang.err_pam_cred_expired;
-			break;
-		}
-		case PAM_CRED_INSUFFICIENT:
-		{
-			buf->info_line = lang.err_pam_cred_insufficient;
-			break;
-		}
-		case PAM_CRED_UNAVAIL:
-		{
-			buf->info_line = lang.err_pam_cred_unavail;
-			break;
-		}
-		case PAM_MAXTRIES:
-		{
-			buf->info_line = lang.err_pam_maxtries;
-			break;
-		}
-		case PAM_NEW_AUTHTOK_REQD:
-		{
-			buf->info_line = lang.err_pam_authok_reqd;
-			break;
-		}
-		case PAM_PERM_DENIED:
-		{
-			buf->info_line = lang.err_pam_perm_denied;
-			break;
-		}
-		case PAM_SESSION_ERR:
-		{
-			buf->info_line = lang.err_pam_session;
-			break;
-		}
-		case PAM_SYSTEM_ERR:
-		{
-			buf->info_line = lang.err_pam_sys;
-			break;
-		}
-		case PAM_USER_UNKNOWN:
-		{
-			buf->info_line = lang.err_pam_user_unknown;
-			break;
-		}
-		case PAM_ABORT:
-		default:
-		{
-			buf->info_line = lang.err_pam_abort;
-			break;
-		}
-	}
-
-	dgn_throw(DGN_PAM);
-}
-
-void env_init(struct passwd* pwd)
-{
-	extern char** environ;
-	char* term = getenv("TERM");
-	char* lang = getenv("LANG");
-	// clean env
-	environ[0] = NULL;
-	
-	setenv("TERM", term ? term : "linux", 1);
-	setenv("HOME", pwd->pw_dir, 1);
-	setenv("PWD", pwd->pw_dir, 1);
-	setenv("SHELL", pwd->pw_shell, 1);
-	setenv("USER", pwd->pw_name, 1);
-	setenv("LOGNAME", pwd->pw_name, 1);
-	setenv("LANG", lang ? lang : "C", 1);
-
-	// Set PATH if specified in the configuration
-	if (strlen(config.path))
-	{
-		int ok = setenv("PATH", config.path, 1);
-
-		if (ok != 0)
-		{
-			dgn_throw(DGN_PATH);
-		}
-	}
-}
-
-void env_xdg_session(const enum display_server display_server)
-{
-	switch (display_server)
-	{
-		case DS_WAYLAND:
-		{
-			setenv("XDG_SESSION_TYPE", "wayland", 1);
-			break;
-		}
-		case DS_SHELL:
-		{
-			setenv("XDG_SESSION_TYPE", "tty", 0);
-			break;
-		}
-		case DS_XINITRC:
-		case DS_XORG:
-		{
-			setenv("XDG_SESSION_TYPE", "x11", 0);
-			break;
-		}
-	}
-}
-
-void env_xdg(const char* tty_id, const char* desktop_name)
-{
-    char user[20];
-    snprintf(user, 20, "/run/user/%d", getuid());
-    setenv("XDG_RUNTIME_DIR", user, 0);
-    setenv("XDG_SESSION_CLASS", "user", 0);
-    setenv("XDG_SESSION_ID", "1", 0);
-    setenv("XDG_SESSION_DESKTOP", desktop_name, 0);
-    setenv("XDG_SEAT", "seat0", 0);
-    setenv("XDG_VTNR", tty_id, 0);
-}
-
-void add_utmp_entry(
-	struct utmp *entry,
-	char *username,
-	pid_t display_pid
-) {
-	entry->ut_type = USER_PROCESS;
-	entry->ut_pid = display_pid;
-	strcpy(entry->ut_line, ttyname(STDIN_FILENO) + strlen("/dev/"));
-
-	/* only correct for ptys named /dev/tty[pqr][0-9a-z] */
-	strcpy(entry->ut_id, ttyname(STDIN_FILENO) + strlen("/dev/tty"));
-
-	time((long int *) &entry->ut_time);
-
-	strncpy(entry->ut_user, username, UT_NAMESIZE);
-	memset(entry->ut_host, 0, UT_HOSTSIZE);
-	entry->ut_addr = 0;
-	setutent();
-
-	pututline(entry);
-}
-
-void remove_utmp_entry(struct utmp *entry) {
-	entry->ut_type = DEAD_PROCESS;
-	memset(entry->ut_line, 0, UT_LINESIZE);
-	entry->ut_time = 0;
-	memset(entry->ut_user, 0, UT_NAMESIZE);
-	setutent();
-	pututline(entry);
-	endutent();
-}
-
-void xauth(const char* display_name, const char* shell, char* pwd)
-{
-	const char* xauth_file = "lyxauth";
-	char* xauth_dir = getenv("XDG_RUNTIME_DIR");
-	if ((xauth_dir == NULL) || (*xauth_dir == '\0'))
-	{
-		xauth_dir = getenv("XDG_CONFIG_HOME");
-		struct stat sb;
-		if ((xauth_dir == NULL) || (*xauth_dir == '\0'))
-		{
-			xauth_dir = strdup(pwd);
-			strcat(xauth_dir, "/.config");
-			stat(xauth_dir, &sb);
-			if (S_ISDIR(sb.st_mode))
-			{
-				strcat(xauth_dir, "/ly");
-			}
-			else
-			{
-				xauth_dir = pwd;
-				xauth_file = ".lyxauth";
-			}
-		}
-		else
-		{
-			strcat(xauth_dir, "/ly");
-		}
-
-		// If .config/ly/ or XDG_CONFIG_HOME/ly/ doesn't exist and can't create the directory, use pwd
-		// Passing pwd beforehand is safe since stat will always evaluate false
-		stat(xauth_dir, &sb);
-		if (!S_ISDIR(sb.st_mode) && mkdir(xauth_dir, 0777) == -1)
-		{
-			xauth_dir = pwd;
-			xauth_file = ".lyxauth";
-		}
-	}
-
-	// trim trailing slashes
-	int i = strlen(xauth_dir) - 1;
-	while (xauth_dir[i] == '/') i--;
-	xauth_dir[i + 1] = '\0';
-
-	char xauthority[256];
-	snprintf(xauthority, 256, "%s/%s", xauth_dir, xauth_file);
-	setenv("XAUTHORITY", xauthority, 1);
-	setenv("DISPLAY", display_name, 1);
-
-	FILE* fp = fopen(xauthority, "ab+");
-
-	if (fp != NULL)
-	{
-		fclose(fp);
-	}
-
-	pid_t pid = fork();
-
-	if (pid == 0)
-	{
-		char cmd[1024];
-		snprintf(
-			cmd,
-			1024,
-			"%s add %s . `%s`",
-			config.xauth_cmd,
-			display_name,
-			config.mcookie_cmd);
-		execl(shell, shell, "-c", cmd, NULL);
-		exit(EXIT_SUCCESS);
-	}
-
-	int status;
-	waitpid(pid, &status, 0);
-}
-
-void xorg(
-	struct passwd* pwd,
-	const char* vt,
-	const char* desktop_cmd)
-{
-	char display_name[4];
-
-	snprintf(display_name, 3, ":%d", get_free_display());
-	xauth(display_name, pwd->pw_shell, pwd->pw_dir);
-
-	// start xorg
-	pid_t pid = fork();
-
-	if (pid == 0)
-	{
-		char x_cmd[1024];
-		snprintf(
-			x_cmd,
-			1024,
-			"%s %s %s",
-			config.x_cmd,
-			display_name,
-			vt);
-		execl(pwd->pw_shell, pwd->pw_shell, "-c", x_cmd, NULL);
-		exit(EXIT_SUCCESS);
-	}
-
-	int ok;
-	xcb_connection_t* xcb;
-
-	do
-	{
-		xcb = xcb_connect(NULL, NULL);
-		ok = xcb_connection_has_error(xcb);
-		kill(pid, 0);
-	}
-	while((ok != 0) && (errno != ESRCH));
-
-	if (ok != 0)
-	{
-		return;
-	}
-
-	pid_t xorg_pid = fork();
-
-	if (xorg_pid == 0)
-	{
-		char de_cmd[1024];
-		snprintf(
-			de_cmd,
-			1024,
-			"%s %s",
-			config.x_cmd_setup,
-			desktop_cmd);
-		execl(pwd->pw_shell, pwd->pw_shell, "-c", de_cmd, NULL);
-		exit(EXIT_SUCCESS);
-	}
-
-	int status;
-	waitpid(xorg_pid, &status, 0);
-	xcb_disconnect(xcb);
-	kill(pid, 0);
-
-	if (errno != ESRCH)
-	{
-		kill(pid, SIGTERM);
-		waitpid(pid, &status, 0);
-	}
-}
-
-void wayland(
-	struct passwd* pwd,
-	const char* desktop_cmd)
-{
-
-	char cmd[1024];
-	snprintf(cmd, 1024, "%s %s", config.wayland_cmd, desktop_cmd);
-	execl(pwd->pw_shell, pwd->pw_shell, "-c", cmd, NULL);
-}
-
-void shell(struct passwd* pwd)
-{
-	const char* pos = strrchr(pwd->pw_shell, '/');
-	char args[1024];
-	args[0] = '-';
-
-	if (pos != NULL)
-	{
-		pos = pos + 1;
-	}
-	else
-	{
-		pos = pwd->pw_shell;
-	}
-
-	strncpy(args + 1, pos, 1023);
-	execl(pwd->pw_shell, args, NULL);
-}
-
-// pam_do performs the pam action specified in pam_action
-// on pam_action fail, call diagnose and end pam session
-int pam_do(
-	int (pam_action)(struct pam_handle *, int),
-	struct pam_handle *handle,
-	int flags,
-	struct term_buf *buf)
-{
-	int status = pam_action(handle, flags);
-
-	if (status != PAM_SUCCESS) {
-		pam_diagnose(status, buf);
-		pam_end(handle, status);
-	}
-
-	return status;
-}
-
-void auth(
-	struct desktop* desktop,
-	struct text* login,
-	struct text* password,
-	struct term_buf* buf)
-{
-	int ok;
-
-    char tty_id [3];
-    snprintf(tty_id, 3, "%d", config.tty);
-
-    // Add XDG environment variables
-    env_xdg_session(desktop->display_server[desktop->cur]);
-    env_xdg(tty_id, desktop->list_simple[desktop->cur]);
-
-	// open pam session
-	const char* creds[2] = {login->text, password->text};
-	struct pam_conv conv = {login_conv, creds};
-	struct pam_handle* handle;
-
-	ok = pam_start(config.service_name, NULL, &conv, &handle);
-
-	if (ok != PAM_SUCCESS)
-	{
-		pam_diagnose(ok, buf);
-		pam_end(handle, ok);
-		return;
-	}
-
-	ok = pam_do(pam_authenticate, handle, 0, buf);
-
-	if (ok != PAM_SUCCESS)
-	{
-		return;
-	}
-
-	ok = pam_do(pam_acct_mgmt, handle, 0, buf);
-
-	if (ok != PAM_SUCCESS)
-	{
-		return;
-	}
-
-	ok = pam_do(pam_setcred, handle, PAM_ESTABLISH_CRED, buf);
-
-	if (ok != PAM_SUCCESS)
-	{
-		return;
-	}
-
-	ok = pam_do(pam_open_session, handle, 0, buf);
-
-	if (ok != PAM_SUCCESS)
-	{
-		return;
-	}
-
-	// clear the credentials
-	input_text_clear(password);
-
-	// get passwd structure
-	struct passwd* pwd = getpwnam(login->text);
-	endpwent();
-
-	if (pwd == NULL)
-	{
-		dgn_throw(DGN_PWNAM);
-		pam_end(handle, ok);
-		return;
-	}
-
-	// set user shell
-	if (pwd->pw_shell[0] == '\0')
-	{
-		setusershell();
-
-		char* shell = getusershell();
-
-		if (shell != NULL)
-		{
-			strcpy(pwd->pw_shell, shell);
-		}
-
-		endusershell();
-	}
-
-	// restore regular terminal mode
-	tb_clear();
-	tb_present();
-	tb_shutdown();
-
-	// start desktop environment
-	pid_t pid = fork();
-
-	if (pid == 0)
-	{
-		// set user info
-		ok = initgroups(pwd->pw_name, pwd->pw_gid);
-
-		if (ok != 0)
-		{
-			dgn_throw(DGN_USER_INIT);
-			exit(EXIT_FAILURE);
-		}
-
-		ok = setgid(pwd->pw_gid);
-
-		if (ok != 0)
-		{
-			dgn_throw(DGN_USER_GID);
-			exit(EXIT_FAILURE);
-		}
-
-		ok = setuid(pwd->pw_uid);
-
-		if (ok != 0)
-		{
-			dgn_throw(DGN_USER_UID);
-			exit(EXIT_FAILURE);
-		}
-
-		// get a display
-		char vt[5];
-		snprintf(vt, 5, "vt%d", config.tty);
-
-		// set env (this clears the environment)
-		env_init(pwd);
-		// Re-add XDG environment variables from lines 508,509
-		env_xdg_session(desktop->display_server[desktop->cur]);
-		env_xdg(tty_id, desktop->list_simple[desktop->cur]);
-
-		if (dgn_catch())
-		{
-			exit(EXIT_FAILURE);
-		}
-
-		// add pam variables
-		char** env = pam_getenvlist(handle);
-
-		for (uint16_t i = 0; env && env[i]; ++i)
-		{
-			putenv(env[i]);
-		}
-
-		// execute
-		int ok = chdir(pwd->pw_dir);
-
-		if (ok != 0)
-		{
-			dgn_throw(DGN_CHDIR);
-			exit(EXIT_FAILURE);
-		}
-
-		reset_terminal(pwd);
-		switch (desktop->display_server[desktop->cur])
-		{
-			case DS_WAYLAND:
-			{
-				wayland(pwd, desktop->cmd[desktop->cur]);
-				break;
-			}
-			case DS_SHELL:
-			{
-				shell(pwd);
-				break;
-			}
-			case DS_XINITRC:
-			case DS_XORG:
-			{
-				xorg(pwd, vt, desktop->cmd[desktop->cur]);
-				break;
-			}
-		}
-
-		exit(EXIT_SUCCESS);
-	}
-
-	// add utmp audit
-	struct utmp entry;
-	add_utmp_entry(&entry, pwd->pw_name, pid);
-
-	// wait for the session to stop
-	int status;
-	waitpid(pid, &status, 0);
-	remove_utmp_entry(&entry);
-
-	reset_terminal(pwd);
-
-	// reinit termbox
-	tb_init();
-	tb_select_output_mode(TB_OUTPUT_NORMAL);
-
-	// reload the desktop environment list on logout
-	input_desktop_free(desktop);
-	input_desktop(desktop);
-	desktop_load(desktop);
-
-	// close pam session
-	ok = pam_do(pam_close_session, handle, 0, buf);
-
-	if (ok != PAM_SUCCESS)
-	{
-		return;
-	}
-
-	ok = pam_do(pam_setcred, handle, PAM_DELETE_CRED, buf);
-
-	if (ok != PAM_SUCCESS)
-	{
-		return;
-	}
-
-	ok = pam_end(handle, 0);
-
-	if (ok != PAM_SUCCESS)
-	{
-		pam_diagnose(ok, buf);
-	}
-}
-

src/login.h

@@ -1,13 +0,0 @@
-#ifndef H_LY_LOGIN
-#define H_LY_LOGIN
-
-#include "draw.h"
-#include "inputs.h"
-
-void auth(
-	struct desktop* desktop,
-	struct text* login,
-	struct text* password,
-	struct term_buf* buf);
-
-#endif

src/main.c

@@ -1,356 +0,0 @@
-#include "argoat.h"
-#include "configator.h"
-#include "dragonfail.h"
-#include "termbox.h"
-
-#include "draw.h"
-#include "inputs.h"
-#include "login.h"
-#include "utils.h"
-#include "config.h"
-
-#include <stdbool.h>
-#include <stdint.h>
-#include <stdio.h>
-#include <stddef.h>
-#include <string.h>
-#include <sys/time.h>
-#include <unistd.h>
-#include <stdlib.h>
-
-#define ARG_COUNT 7
-
-#ifndef LY_VERSION
-#define LY_VERSION "0.6.0"
-#endif
-
-// global
-struct lang lang;
-struct config config;
-
-// args handles
-void arg_help(void* data, char** pars, const int pars_count)
-{
-	printf("If you want to configure Ly, please check the config file, usually located at /etc/ly/config.ini.\n");
-    exit(0);
-}
-
-void arg_version(void* data, char** pars, const int pars_count)
-{
-    printf("Ly version %s\n", LY_VERSION);
-    exit(0);
-}
-
-// low-level error messages
-void log_init(char** log)
-{
-	log[DGN_OK] = lang.err_dgn_oob;
-	log[DGN_NULL] = lang.err_null;
-	log[DGN_ALLOC] = lang.err_alloc;
-	log[DGN_BOUNDS] = lang.err_bounds;
-	log[DGN_DOMAIN] = lang.err_domain;
-	log[DGN_MLOCK] = lang.err_mlock;
-	log[DGN_XSESSIONS_DIR] = lang.err_xsessions_dir;
-	log[DGN_XSESSIONS_OPEN] = lang.err_xsessions_open;
-	log[DGN_PATH] = lang.err_path;
-	log[DGN_CHDIR] = lang.err_chdir;
-	log[DGN_PWNAM] = lang.err_pwnam;
-	log[DGN_USER_INIT] = lang.err_user_init;
-	log[DGN_USER_GID] = lang.err_user_gid;
-	log[DGN_USER_UID] = lang.err_user_uid;
-	log[DGN_PAM] = lang.err_pam;
-	log[DGN_HOSTNAME] = lang.err_hostname;
-}
-
-void arg_config(void* data, char** pars, const int pars_count)
-{
-	*((char **)data) = *pars;
-}
-
-// ly!
-int main(int argc, char** argv)
-{
-	// init error lib
-	log_init(dgn_init());
-
-	// load config
-	config_defaults();
-	lang_defaults();
-
-	char *config_path = NULL;
-	// parse args
-	const struct argoat_sprig sprigs[ARG_COUNT] =
-	{
-		{NULL, 0, NULL, NULL},
-		{"config", 0, &config_path, arg_config},
-		{"c", 0, &config_path, arg_config},
-		{"help", 0, NULL, arg_help},
-		{"h", 0, NULL, arg_help},
-		{"version", 0, NULL, arg_version},
-		{"v", 0, NULL, arg_version},
-	};
-
-	struct argoat args = {sprigs, ARG_COUNT, NULL, 0, 0};
-	argoat_graze(&args, argc, argv);
-
-	// init inputs
-	struct desktop desktop;
-	struct text login;
-	struct text password;
-	input_desktop(&desktop);
-	input_text(&login, config.max_login_len);
-	input_text(&password, config.max_password_len);
-
-	if (dgn_catch())
-	{
-		config_free();
-		lang_free();
-		return 1;
-	}
-
-	config_load(config_path);
-	lang_load();
-
-	void* input_structs[3] =
-	{
-		(void*) &desktop,
-		(void*) &login,
-		(void*) &password,
-	};
-
-	void (*input_handles[3]) (void*, struct tb_event*) =
-	{
-		handle_desktop,
-		handle_text,
-		handle_text,
-	};
-
-	desktop_load(&desktop);
-	load(&desktop, &login);
-
-	// start termbox
-	tb_init();
-	tb_select_output_mode(TB_OUTPUT_NORMAL);
-	tb_clear();
-
-	// init visible elements
-	struct tb_event event;
-	struct term_buf buf;
-	
-	//Place the curser on the login field if there is no saved username, if there is, place the curser on the password field
-	uint8_t active_input;
-        if (config.default_input == LOGIN_INPUT && login.text != login.end){
-        	active_input = PASSWORD_INPUT;
-        }
-        else{
-        	active_input = config.default_input;
-        }
-
-
-	// init drawing stuff
-	draw_init(&buf);
-
-	// draw_box and position_input are called because they need to be
-	// called before *input_handles[active_input] for the cursor to be
-	// positioned correctly
-	draw_box(&buf);
-	position_input(&buf, &desktop, &login, &password);
-	(*input_handles[active_input])(input_structs[active_input], NULL);
-
-	if (config.animate)
-	{
-		animate_init(&buf);
-
-		if (dgn_catch())
-		{
-			config.animate = false;
-			dgn_reset();
-		}
-	}
-
-	// init state info
-	int error;
-	bool run = true;
-	bool update = true;
-	bool reboot = false;
-	bool shutdown = false;
-	uint8_t auth_fails = 0;
-
-	switch_tty(&buf);
-
-	// main loop
-	while (run)
-	{
-		if (update)
-		{
-			if (auth_fails < 10)
-			{
-				(*input_handles[active_input])(input_structs[active_input], NULL);
-				tb_clear();
-				animate(&buf);
-				draw_bigclock(&buf);
-				draw_box(&buf);
-				draw_clock(&buf);
-				draw_labels(&buf);
-				if(!config.hide_f1_commands)
-					draw_f_commands();
-				draw_lock_state(&buf);
-				position_input(&buf, &desktop, &login, &password);
-				draw_desktop(&desktop);
-				draw_input(&login);
-				draw_input_mask(&password);
-				update = config.animate;
-			}
-			else
-			{
-				usleep(10000);
-				update = cascade(&buf, &auth_fails);
-			}
-
-			tb_present();
-		}
-
-		int timeout = -1;
-
-		if (config.animate)
-		{
-			timeout = config.min_refresh_delta;
-		}
-		else
-		{
-			struct timeval tv;
-			gettimeofday(&tv, NULL);
-			if (config.bigclock)
-				timeout = (60 - tv.tv_sec % 60) * 1000 - tv.tv_usec / 1000 + 1;
-			if (config.clock)
-				timeout = 1000 - tv.tv_usec / 1000 + 1;
-		}
-
-		if (timeout == -1)
-        {
-            error = tb_poll_event(&event);
-        }
-		else
-        {
-            error = tb_peek_event(&event, timeout);
-        }
-
-		if (error < 0)
-		{
-			continue;
-		}
-
-		if (event.type == TB_EVENT_KEY)
-		{
-			switch (event.key)
-			{
-			case TB_KEY_F1:
-				shutdown = true;
-				run = false;
-				break;
-			case TB_KEY_F2:
-				reboot = true;
-				run = false;
-				break;
-			case TB_KEY_CTRL_C:
-				run = false;
-				break;
-			case TB_KEY_CTRL_U:
-				if (active_input > 0)
-				{
-					input_text_clear(input_structs[active_input]);
-					update = true;
-				}
-				break;
-			case TB_KEY_CTRL_K:
-			case TB_KEY_ARROW_UP:
-				if (active_input > 0)
-				{
-					--active_input;
-					update = true;
-				}
-				break;
-			case TB_KEY_CTRL_J:
-			case TB_KEY_ARROW_DOWN:
-				if (active_input < 2)
-				{
-					++active_input;
-					update = true;
-				}
-				break;
-			case TB_KEY_TAB:
-				++active_input;
-
-				if (active_input > 2)
-				{
-					active_input = SESSION_SWITCH;
-				}
-				update = true;
-				break;
-			case TB_KEY_ENTER:
-				save(&desktop, &login);
-				auth(&desktop, &login, &password, &buf);
-				update = true;
-
-				if (dgn_catch())
-				{
-					++auth_fails;
-					// move focus back to password input
-					active_input = PASSWORD_INPUT;
-
-					if (dgn_output_code() != DGN_PAM)
-					{
-						buf.info_line = dgn_output_log();
-					}
-
-					if (config.blank_password)
-					{
-						input_text_clear(&password);
-					}
-
-					dgn_reset();
-				}
-				else
-				{
-					buf.info_line = lang.logout;
-				}
-
-				load(&desktop, &login);
-				system("tput cnorm");
-				break;
-			default:
-				(*input_handles[active_input])(
-					input_structs[active_input],
-					&event);
-				update = true;
-				break;
-			}
-		}
-	}
-
-	// stop termbox
-	tb_shutdown();
-
-	// free inputs
-	input_desktop_free(&desktop);
-	input_text_free(&login);
-	input_text_free(&password);
-	free_hostname();
-
-	// unload config
-	draw_free(&buf);
-	lang_free();
-
-	if (shutdown)
-	{
-		execl("/bin/sh", "sh", "-c", config.shutdown_cmd, NULL);
-	}
-    else if (reboot)
-	{
-		execl("/bin/sh", "sh", "-c", config.restart_cmd, NULL);
-	}
-
-	config_free();
-
-	return 0;
-}

src/main.zig

@@ -0,0 +1,695 @@
+const std = @import("std");
+const build_options = @import("build_options");
+const builtin = @import("builtin");
+const clap = @import("clap");
+const ini = @import("zigini");
+const auth = @import("auth.zig");
+const bigclock = @import("bigclock.zig");
+const interop = @import("interop.zig");
+const Doom = @import("animations/Doom.zig");
+const Matrix = @import("animations/Matrix.zig");
+const TerminalBuffer = @import("tui/TerminalBuffer.zig");
+const Desktop = @import("tui/components/Desktop.zig");
+const Text = @import("tui/components/Text.zig");
+const InfoLine = @import("tui/components/InfoLine.zig");
+const Config = @import("config/Config.zig");
+const Lang = @import("config/Lang.zig");
+const Save = @import("config/Save.zig");
+const migrator = @import("config/migrator.zig");
+const SharedError = @import("SharedError.zig");
+const utils = @import("tui/utils.zig");
+
+const Ini = ini.Ini;
+const termbox = interop.termbox;
+const temporary_allocator = std.heap.page_allocator;
+
+var session_pid: std.posix.pid_t = -1;
+pub fn signalHandler(i: c_int) callconv(.C) void {
+    if (session_pid == 0) return;
+
+    // Forward signal to session to clean up
+    if (session_pid > 0) {
+        _ = std.c.kill(session_pid, i);
+        var status: c_int = 0;
+        _ = std.c.waitpid(session_pid, &status, 0);
+    }
+
+    _ = termbox.tb_shutdown();
+    std.c.exit(i);
+}
+
+pub fn main() !void {
+    var shutdown = false;
+    var restart = false;
+    var shutdown_cmd: []const u8 = undefined;
+    var restart_cmd: []const u8 = undefined;
+
+    const stderr = std.io.getStdErr().writer();
+
+    defer {
+        // If we can't shutdown or restart due to an error, we print it to standard error. If that fails, just bail out
+        if (shutdown) {
+            const shutdown_error = std.process.execv(temporary_allocator, &[_][]const u8{ "/bin/sh", "-c", shutdown_cmd });
+            stderr.print("error: couldn't shutdown: {any}\n", .{shutdown_error}) catch std.process.exit(1);
+        } else if (restart) {
+            const restart_error = std.process.execv(temporary_allocator, &[_][]const u8{ "/bin/sh", "-c", restart_cmd });
+            stderr.print("error: couldn't restart: {any}\n", .{restart_error}) catch std.process.exit(1);
+        } else {
+            // The user has quit Ly using Ctrl+C
+            temporary_allocator.free(shutdown_cmd);
+            temporary_allocator.free(restart_cmd);
+        }
+    }
+
+    var gpa = std.heap.GeneralPurposeAllocator(.{}){};
+    defer _ = gpa.deinit();
+
+    const allocator = gpa.allocator();
+
+    // Load arguments
+    const params = comptime clap.parseParamsComptime(
+        \\-h, --help                Shows all commands.
+        \\-v, --version             Shows the version of Ly.
+        \\-c, --config <str>        Overrides the default configuration path. Example: --config /usr/share/ly
+    );
+
+    var diag = clap.Diagnostic{};
+    var res = clap.parse(clap.Help, &params, clap.parsers.default, .{ .diagnostic = &diag, .allocator = allocator }) catch |err| {
+        diag.report(stderr, err) catch {};
+        return err;
+    };
+    defer res.deinit();
+
+    var config: Config = undefined;
+    var lang: Lang = undefined;
+    var save: Save = undefined;
+    var info_line = InfoLine{};
+
+    if (res.args.help != 0) {
+        try clap.help(stderr, clap.Help, &params, .{});
+
+        _ = try stderr.write("Note: if you want to configure Ly, please check the config file, which is usually located at /etc/ly/config.ini.\n");
+        std.process.exit(0);
+    }
+    if (res.args.version != 0) {
+        _ = try stderr.write("Ly version " ++ build_options.version ++ "\n");
+        std.process.exit(0);
+    }
+
+    // Load configuration file
+    var config_ini = Ini(Config).init(allocator);
+    defer config_ini.deinit();
+
+    var lang_ini = Ini(Lang).init(allocator);
+    defer lang_ini.deinit();
+
+    var save_ini = Ini(Save).init(allocator);
+    defer save_ini.deinit();
+
+    var save_path: []const u8 = build_options.data_directory ++ "/save.ini";
+    var save_path_alloc = false;
+    defer {
+        if (save_path_alloc) allocator.free(save_path);
+    }
+
+    const comment_characters = "#";
+
+    if (res.args.config) |s| {
+        const trailing_slash = if (s[s.len - 1] != '/') "/" else "";
+
+        const config_path = try std.fmt.allocPrint(allocator, "{s}{s}config.ini", .{ s, trailing_slash });
+        defer allocator.free(config_path);
+
+        config = config_ini.readFileToStruct(config_path, comment_characters, migrator.configFieldHandler) catch Config{};
+
+        const lang_path = try std.fmt.allocPrint(allocator, "{s}{s}lang/{s}.ini", .{ s, trailing_slash, config.lang });
+        defer allocator.free(lang_path);
+
+        lang = lang_ini.readFileToStruct(lang_path, comment_characters, null) catch Lang{};
+
+        if (config.load) {
+            save_path = try std.fmt.allocPrint(allocator, "{s}{s}save.ini", .{ s, trailing_slash });
+            save_path_alloc = true;
+
+            var user_buf: [32]u8 = undefined;
+            save = save_ini.readFileToStruct(save_path, comment_characters, null) catch migrator.tryMigrateSaveFile(&user_buf, config.save_file);
+        }
+    } else {
+        const config_path = build_options.data_directory ++ "/config.ini";
+
+        config = config_ini.readFileToStruct(config_path, comment_characters, migrator.configFieldHandler) catch Config{};
+
+        const lang_path = try std.fmt.allocPrint(allocator, "{s}/lang/{s}.ini", .{ build_options.data_directory, config.lang });
+        defer allocator.free(lang_path);
+
+        lang = lang_ini.readFileToStruct(lang_path, comment_characters, null) catch Lang{};
+
+        if (config.load) {
+            var user_buf: [32]u8 = undefined;
+            save = save_ini.readFileToStruct(save_path, comment_characters, null) catch migrator.tryMigrateSaveFile(&user_buf, config.save_file);
+        }
+    }
+
+    // These strings only end up getting freed if the user quits Ly using Ctrl+C, which is fine since in the other cases
+    // we end up shutting down or restarting the system
+    shutdown_cmd = try temporary_allocator.dupe(u8, config.shutdown_cmd);
+    restart_cmd = try temporary_allocator.dupe(u8, config.restart_cmd);
+
+    interop.setNumlock(config.numlock) catch {};
+
+    if (config.initial_info_text) |text| {
+        try info_line.setText(text);
+    } else get_host_name: {
+        // Initialize information line with host name
+        var name_buf: [std.posix.HOST_NAME_MAX]u8 = undefined;
+        const hostname = std.posix.gethostname(&name_buf) catch {
+            try info_line.setText(lang.err_hostname);
+            break :get_host_name;
+        };
+        try info_line.setText(hostname);
+    }
+
+    // Initialize termbox
+    _ = termbox.tb_init();
+    defer _ = termbox.tb_shutdown();
+
+    const act = std.posix.Sigaction{
+        .handler = .{ .handler = &signalHandler },
+        .mask = std.posix.empty_sigset,
+        .flags = 0,
+    };
+    try std.posix.sigaction(std.posix.SIG.TERM, &act, null);
+
+    _ = termbox.tb_set_output_mode(termbox.TB_OUTPUT_NORMAL);
+    _ = termbox.tb_clear();
+
+    // Needed to reset termbox after auth
+    const tb_termios = try std.posix.tcgetattr(std.posix.STDIN_FILENO);
+
+    // Initialize terminal buffer
+    const labels_max_length = @max(lang.login.len, lang.password.len);
+
+    // Get a random seed for the PRNG (used by animations)
+    var seed: u64 = undefined;
+    try std.posix.getrandom(std.mem.asBytes(&seed));
+
+    var prng = std.Random.DefaultPrng.init(seed);
+    const random = prng.random();
+
+    var buffer = TerminalBuffer.init(config, labels_max_length, random);
+
+    // Initialize components
+    var desktop = try Desktop.init(allocator, &buffer, config.max_desktop_len, lang);
+    defer desktop.deinit();
+
+    desktop.addEnvironment(.{ .Name = lang.shell }, "", .shell) catch {
+        try info_line.setText(lang.err_alloc);
+    };
+    if (config.xinitrc) |xinitrc| {
+        desktop.addEnvironment(.{ .Name = lang.xinitrc, .Exec = xinitrc }, "", .xinitrc) catch {
+            try info_line.setText(lang.err_alloc);
+        };
+    }
+
+    try desktop.crawl(config.waylandsessions, .wayland);
+    try desktop.crawl(config.xsessions, .x11);
+
+    var login = try Text.init(allocator, &buffer, config.max_login_len);
+    defer login.deinit();
+
+    var password = try Text.init(allocator, &buffer, config.max_password_len);
+    defer password.deinit();
+
+    var active_input = config.default_input;
+    var insert_mode = !config.vi_mode;
+
+    // Load last saved username and desktop selection, if any
+    if (config.load) {
+        if (save.user) |user| {
+            try login.text.appendSlice(user);
+            login.end = user.len;
+            login.cursor = login.end;
+            active_input = .password;
+        }
+
+        if (save.session_index) |session_index| {
+            if (session_index < desktop.environments.items.len) desktop.current = session_index;
+        }
+    }
+
+    // Place components on the screen
+    {
+        buffer.drawBoxCenter(!config.hide_borders, config.blank_box);
+
+        const coordinates = buffer.calculateComponentCoordinates();
+        desktop.position(coordinates.x, coordinates.y + 2, coordinates.visible_length);
+        login.position(coordinates.x, coordinates.y + 4, coordinates.visible_length);
+        password.position(coordinates.x, coordinates.y + 6, coordinates.visible_length);
+
+        switch (active_input) {
+            .session => desktop.handle(null, insert_mode),
+            .login => login.handle(null, insert_mode) catch {
+                try info_line.setText(lang.err_alloc);
+            },
+            .password => password.handle(null, insert_mode) catch {
+                try info_line.setText(lang.err_alloc);
+            },
+        }
+    }
+
+    // Initialize the animation, if any
+    var doom: Doom = undefined;
+    var matrix: Matrix = undefined;
+
+    switch (config.animation) {
+        .none => {},
+        .doom => doom = try Doom.init(allocator, &buffer),
+        .matrix => matrix = try Matrix.init(allocator, &buffer),
+    }
+    defer {
+        switch (config.animation) {
+            .none => {},
+            .doom => doom.deinit(),
+            .matrix => matrix.deinit(),
+        }
+    }
+
+    const animate = config.animation != .none;
+    const shutdown_key = try std.fmt.parseInt(u8, config.shutdown_key[1..], 10);
+    const shutdown_len = try utils.strWidth(lang.shutdown);
+    const restart_key = try std.fmt.parseInt(u8, config.restart_key[1..], 10);
+    const restart_len = try utils.strWidth(lang.restart);
+    const sleep_key = try std.fmt.parseInt(u8, config.sleep_key[1..], 10);
+
+    var event: termbox.tb_event = undefined;
+    var run = true;
+    var update = true;
+    var resolution_changed = false;
+    var auth_fails: u64 = 0;
+
+    // Switch to selected TTY if possible
+    open_console_dev: {
+        const fd = std.posix.open(config.console_dev, .{ .ACCMODE = .WRONLY }, 0) catch {
+            try info_line.setText(lang.err_console_dev);
+            break :open_console_dev;
+        };
+        defer std.posix.close(fd);
+
+        _ = std.c.ioctl(fd, interop.VT_ACTIVATE, config.tty);
+        _ = std.c.ioctl(fd, interop.VT_WAITACTIVE, config.tty);
+    }
+
+    while (run) {
+        // If there's no input or there's an animation, a resolution change needs to be checked
+        if (!update or config.animation != .none) {
+            if (!update) std.time.sleep(std.time.ns_per_ms * 100);
+
+            _ = termbox.tb_present(); // Required to update tb_width(), tb_height() and tb_cell_buffer()
+
+            const width: u64 = @intCast(termbox.tb_width());
+            const height: u64 = @intCast(termbox.tb_height());
+
+            if (width != buffer.width) {
+                buffer.width = width;
+                resolution_changed = true;
+            }
+
+            if (height != buffer.height) {
+                buffer.height = height;
+                resolution_changed = true;
+            }
+
+            // If it did change, then update the cell buffer, reallocate the current animation's buffers, and force a draw update
+            if (resolution_changed) {
+                buffer.buffer = termbox.tb_cell_buffer();
+
+                switch (config.animation) {
+                    .none => {},
+                    .doom => doom.realloc() catch {
+                        try info_line.setText(lang.err_alloc);
+                    },
+                    .matrix => matrix.realloc() catch {
+                        try info_line.setText(lang.err_alloc);
+                    },
+                }
+
+                update = true;
+            }
+        }
+
+        if (update) {
+            // If the user entered a wrong password 10 times in a row, play a cascade animation, else update normally
+            if (auth_fails < 10) {
+                _ = termbox.tb_clear();
+
+                switch (config.animation) {
+                    .none => {},
+                    .doom => doom.draw(),
+                    .matrix => matrix.draw(),
+                }
+
+                if (config.bigclock and buffer.box_height + (bigclock.HEIGHT + 2) * 2 < buffer.height) draw_big_clock: {
+                    const format = "%H:%M";
+                    const xo = buffer.width / 2 - @min(buffer.width, (format.len * (bigclock.WIDTH + 1))) / 2;
+                    const yo = (buffer.height - buffer.box_height) / 2 - bigclock.HEIGHT - 2;
+
+                    var clock_buf: [format.len + 1:0]u8 = undefined;
+                    const clock_str = interop.timeAsString(&clock_buf, format) catch {
+                        break :draw_big_clock;
+                    };
+
+                    for (clock_str, 0..) |c, i| {
+                        const clock_cell = bigclock.clockCell(animate, c, buffer.fg, buffer.bg);
+                        bigclock.alphaBlit(buffer.buffer, xo + i * (bigclock.WIDTH + 1), yo, buffer.width, buffer.height, clock_cell);
+                    }
+                }
+
+                buffer.drawBoxCenter(!config.hide_borders, config.blank_box);
+
+                if (resolution_changed) {
+                    const coordinates = buffer.calculateComponentCoordinates();
+                    desktop.position(coordinates.x, coordinates.y + 2, coordinates.visible_length);
+                    login.position(coordinates.x, coordinates.y + 4, coordinates.visible_length);
+                    password.position(coordinates.x, coordinates.y + 6, coordinates.visible_length);
+
+                    resolution_changed = false;
+                }
+
+                switch (active_input) {
+                    .session => desktop.handle(null, insert_mode),
+                    .login => login.handle(null, insert_mode) catch {
+                        try info_line.setText(lang.err_alloc);
+                    },
+                    .password => password.handle(null, insert_mode) catch {
+                        try info_line.setText(lang.err_alloc);
+                    },
+                }
+
+                if (config.clock) |clock| draw_clock: {
+                    var clock_buf: [32:0]u8 = undefined;
+                    const clock_str = interop.timeAsString(&clock_buf, clock) catch {
+                        break :draw_clock;
+                    };
+
+                    if (clock_str.len == 0) return error.FormattedTimeEmpty;
+
+                    buffer.drawLabel(clock_str, buffer.width - @min(buffer.width, clock_str.len), 0);
+                }
+
+                const label_x = buffer.box_x + buffer.margin_box_h;
+                const label_y = buffer.box_y + buffer.margin_box_v;
+
+                buffer.drawLabel(lang.login, label_x, label_y + 4);
+                buffer.drawLabel(lang.password, label_x, label_y + 6);
+
+                info_line.draw(buffer);
+
+                if (!config.hide_key_hints) {
+                    var length: u64 = 0;
+
+                    buffer.drawLabel(config.shutdown_key, length, 0);
+                    length += config.shutdown_key.len + 1;
+                    buffer.drawLabel(" ", length - 1, 0);
+
+                    buffer.drawLabel(lang.shutdown, length, 0);
+                    length += shutdown_len + 1;
+
+                    buffer.drawLabel(config.restart_key, length, 0);
+                    length += config.restart_key.len + 1;
+                    buffer.drawLabel(" ", length - 1, 0);
+
+                    buffer.drawLabel(lang.restart, length, 0);
+                    length += restart_len + 1;
+
+                    if (config.sleep_cmd != null) {
+                        buffer.drawLabel(config.sleep_key, length, 0);
+                        length += config.sleep_key.len + 1;
+                        buffer.drawLabel(" ", length - 1, 0);
+
+                        buffer.drawLabel(lang.sleep, length, 0);
+                    }
+                }
+
+                if (config.box_title) |title| {
+                    buffer.drawConfinedLabel(title, buffer.box_x, buffer.box_y - 1, buffer.box_width);
+                }
+
+                if (config.vi_mode) {
+                    const label_txt = if (insert_mode) lang.insert else lang.normal;
+                    buffer.drawLabel(label_txt, buffer.box_x, buffer.box_y + buffer.box_height);
+                }
+
+                draw_lock_state: {
+                    const lock_state = interop.getLockState(config.console_dev) catch {
+                        try info_line.setText(lang.err_console_dev);
+                        break :draw_lock_state;
+                    };
+
+                    var lock_state_x = buffer.width - @min(buffer.width, lang.numlock.len);
+                    const lock_state_y: u64 = if (config.clock != null) 1 else 0;
+
+                    if (lock_state.numlock) buffer.drawLabel(lang.numlock, lock_state_x, lock_state_y);
+
+                    if (lock_state_x >= lang.capslock.len + 1) {
+                        lock_state_x -= lang.capslock.len + 1;
+                        if (lock_state.capslock) buffer.drawLabel(lang.capslock, lock_state_x, lock_state_y);
+                    }
+                }
+
+                desktop.draw();
+                login.draw();
+                password.drawMasked(config.asterisk);
+            } else {
+                std.time.sleep(std.time.ns_per_ms * 10);
+                update = buffer.cascade();
+
+                if (!update) {
+                    std.time.sleep(std.time.ns_per_s * 7);
+                    auth_fails = 0;
+                }
+            }
+
+            _ = termbox.tb_present();
+        }
+
+        var timeout: i32 = -1;
+
+        // Calculate the maximum timeout based on current animations, or the (big) clock. If there's none, we wait for the event indefinitely instead
+        if (animate) {
+            timeout = config.min_refresh_delta;
+        } else if (config.bigclock and config.clock == null) {
+            var tv: std.c.timeval = undefined;
+            _ = std.c.gettimeofday(&tv, null);
+
+            timeout = @intCast((60 - @rem(tv.tv_sec, 60)) * 1000 - @divTrunc(tv.tv_usec, 1000) + 1);
+        } else if (config.clock != null or auth_fails >= 10) {
+            var tv: std.c.timeval = undefined;
+            _ = std.c.gettimeofday(&tv, null);
+
+            timeout = @intCast(1000 - @divTrunc(tv.tv_usec, 1000) + 1);
+        }
+
+        const event_error = if (timeout == -1) termbox.tb_poll_event(&event) else termbox.tb_peek_event(&event, timeout);
+
+        update = timeout != -1;
+
+        if (event_error < 0 or event.type != termbox.TB_EVENT_KEY) continue;
+
+        switch (event.key) {
+            termbox.TB_KEY_ESC => {
+                if (config.vi_mode and insert_mode) {
+                    insert_mode = false;
+                    update = true;
+                }
+            },
+            termbox.TB_KEY_F12...termbox.TB_KEY_F1 => {
+                const pressed_key = 0xFFFF - event.key + 1;
+                if (pressed_key == shutdown_key) {
+                    shutdown = true;
+                    run = false;
+                } else if (pressed_key == restart_key) {
+                    restart = true;
+                    run = false;
+                } else if (pressed_key == sleep_key) {
+                    if (config.sleep_cmd) |sleep_cmd| {
+                        var sleep = std.process.Child.init(&[_][]const u8{ "/bin/sh", "-c", sleep_cmd }, allocator);
+                        _ = sleep.spawnAndWait() catch .{};
+                    }
+                }
+            },
+            termbox.TB_KEY_CTRL_C => run = false,
+            termbox.TB_KEY_CTRL_U => {
+                if (active_input == .login) {
+                    login.clear();
+                    update = true;
+                } else if (active_input == .password) {
+                    password.clear();
+                    update = true;
+                }
+            },
+            termbox.TB_KEY_CTRL_K, termbox.TB_KEY_ARROW_UP => {
+                active_input = switch (active_input) {
+                    .session, .login => .session,
+                    .password => .login,
+                };
+                update = true;
+            },
+            termbox.TB_KEY_CTRL_J, termbox.TB_KEY_ARROW_DOWN => {
+                active_input = switch (active_input) {
+                    .session => .login,
+                    .login, .password => .password,
+                };
+                update = true;
+            },
+            termbox.TB_KEY_TAB => {
+                active_input = switch (active_input) {
+                    .session => .login,
+                    .login => .password,
+                    .password => .session,
+                };
+                update = true;
+            },
+            termbox.TB_KEY_BACK_TAB => {
+                active_input = switch (active_input) {
+                    .session => .password,
+                    .login => .session,
+                    .password => .login,
+                };
+
+                update = true;
+            },
+            termbox.TB_KEY_ENTER => {
+                if (config.save) save_last_settings: {
+                    var file = std.fs.cwd().createFile(save_path, .{}) catch break :save_last_settings;
+                    defer file.close();
+
+                    const save_data = Save{
+                        .user = login.text.items,
+                        .session_index = desktop.current,
+                    };
+                    ini.writeFromStruct(save_data, file.writer(), null, true, .{}) catch break :save_last_settings;
+                }
+
+                var shared_err = try SharedError.init();
+                defer shared_err.deinit();
+
+                {
+                    const login_text = try allocator.dupeZ(u8, login.text.items);
+                    defer allocator.free(login_text);
+                    const password_text = try allocator.dupeZ(u8, password.text.items);
+                    defer allocator.free(password_text);
+
+                    try info_line.setText(lang.authenticating);
+                    InfoLine.clearRendered(allocator, buffer) catch {};
+                    info_line.draw(buffer);
+                    _ = termbox.tb_present();
+
+                    session_pid = try std.posix.fork();
+                    if (session_pid == 0) {
+                        const current_environment = desktop.environments.items[desktop.current];
+                        auth.authenticate(config, current_environment, login_text, password_text) catch |err| {
+                            shared_err.writeError(err);
+                            std.process.exit(1);
+                        };
+                        std.process.exit(0);
+                    }
+
+                    _ = std.posix.waitpid(session_pid, 0);
+                    session_pid = -1;
+                }
+
+                const auth_err = shared_err.readError();
+                if (auth_err) |err| {
+                    auth_fails += 1;
+                    active_input = .password;
+                    try info_line.setText(getAuthErrorMsg(err, lang));
+                    if (config.clear_password or err != error.PamAuthError) password.clear();
+                } else {
+                    password.clear();
+                    try info_line.setText(lang.logout);
+                }
+
+                try std.posix.tcsetattr(std.posix.STDIN_FILENO, .FLUSH, tb_termios);
+                if (auth_fails < 10) {
+                    _ = termbox.tb_clear();
+                    _ = termbox.tb_present();
+                }
+
+                update = true;
+
+                var restore_cursor = std.process.Child.init(&[_][]const u8{ "/bin/sh", "-c", config.term_restore_cursor_cmd }, allocator);
+                _ = restore_cursor.spawnAndWait() catch .{};
+            },
+            else => {
+                if (!insert_mode) {
+                    switch (event.ch) {
+                        'k' => {
+                            active_input = switch (active_input) {
+                                .session, .login => .session,
+                                .password => .login,
+                            };
+                            update = true;
+                            continue;
+                        },
+                        'j' => {
+                            active_input = switch (active_input) {
+                                .session => .login,
+                                .login, .password => .password,
+                            };
+                            update = true;
+                            continue;
+                        },
+                        'i' => {
+                            insert_mode = true;
+                            update = true;
+                            continue;
+                        },
+                        else => {},
+                    }
+                }
+
+                switch (active_input) {
+                    .session => desktop.handle(&event, insert_mode),
+                    .login => login.handle(&event, insert_mode) catch {
+                        try info_line.setText(lang.err_alloc);
+                    },
+                    .password => password.handle(&event, insert_mode) catch {
+                        try info_line.setText(lang.err_alloc);
+                    },
+                }
+                update = true;
+            },
+        }
+    }
+}
+
+fn getAuthErrorMsg(err: anyerror, lang: Lang) []const u8 {
+    return switch (err) {
+        error.GetPasswordNameFailed => lang.err_pwnam,
+        error.GetEnvListFailed => lang.err_envlist,
+        error.XauthFailed => lang.err_xauth,
+        error.McookieFailed => lang.err_mcookie,
+        error.XcbConnectionFailed => lang.err_xcb_conn,
+        error.GroupInitializationFailed => lang.err_user_init,
+        error.SetUserGidFailed => lang.err_user_gid,
+        error.SetUserUidFailed => lang.err_user_uid,
+        error.ChangeDirectoryFailed => lang.err_perm_dir,
+        error.SetPathFailed => lang.err_path,
+        error.PamAccountExpired => lang.err_pam_acct_expired,
+        error.PamAuthError => lang.err_pam_auth,
+        error.PamAuthInfoUnavailable => lang.err_pam_authinfo_unavail,
+        error.PamBufferError => lang.err_pam_buf,
+        error.PamCredentialsError => lang.err_pam_cred_err,
+        error.PamCredentialsExpired => lang.err_pam_cred_expired,
+        error.PamCredentialsInsufficient => lang.err_pam_cred_insufficient,
+        error.PamCredentialsUnavailable => lang.err_pam_cred_unavail,
+        error.PamMaximumTries => lang.err_pam_maxtries,
+        error.PamNewAuthTokenRequired => lang.err_pam_authok_reqd,
+        error.PamPermissionDenied => lang.err_pam_perm_denied,
+        error.PamSessionError => lang.err_pam_session,
+        error.PamSystemError => lang.err_pam_sys,
+        error.PamUserUnknown => lang.err_pam_user_unknown,
+        error.PamAbort => lang.err_pam_abort,
+        else => lang.err_unknown,
+    };
+}

src/tui/TerminalBuffer.zig

@@ -0,0 +1,188 @@
+const std = @import("std");
+const builtin = @import("builtin");
+const interop = @import("../interop.zig");
+const utils = @import("utils.zig");
+const Config = @import("../config/Config.zig");
+
+const Random = std.Random;
+
+const termbox = interop.termbox;
+
+const TerminalBuffer = @This();
+
+random: Random,
+width: u64,
+height: u64,
+buffer: [*]termbox.tb_cell,
+fg: u8,
+bg: u8,
+border_fg: u8,
+box_chars: struct {
+    left_up: u32,
+    left_down: u32,
+    right_up: u32,
+    right_down: u32,
+    top: u32,
+    bottom: u32,
+    left: u32,
+    right: u32,
+},
+labels_max_length: u64,
+box_x: u64,
+box_y: u64,
+box_width: u64,
+box_height: u64,
+margin_box_v: u8,
+margin_box_h: u8,
+
+pub fn init(config: Config, labels_max_length: u64, random: Random) TerminalBuffer {
+    return .{
+        .random = random,
+        .width = @intCast(termbox.tb_width()),
+        .height = @intCast(termbox.tb_height()),
+        .buffer = termbox.tb_cell_buffer(),
+        .fg = config.fg,
+        .bg = config.bg,
+        .border_fg = config.border_fg,
+        .box_chars = if (builtin.os.tag == .linux or builtin.os.tag.isBSD()) .{
+            .left_up = 0x250C,
+            .left_down = 0x2514,
+            .right_up = 0x2510,
+            .right_down = 0x2518,
+            .top = 0x2500,
+            .bottom = 0x2500,
+            .left = 0x2502,
+            .right = 0x2502,
+        } else .{
+            .left_up = '+',
+            .left_down = '+',
+            .right_up = '+',
+            .right_down = '+',
+            .top = '-',
+            .bottom = '-',
+            .left = '|',
+            .right = '|',
+        },
+        .labels_max_length = labels_max_length,
+        .box_x = 0,
+        .box_y = 0,
+        .box_width = (2 * config.margin_box_h) + config.input_len + 1 + labels_max_length,
+        .box_height = 7 + (2 * config.margin_box_v),
+        .margin_box_v = config.margin_box_v,
+        .margin_box_h = config.margin_box_h,
+    };
+}
+
+pub fn cascade(self: TerminalBuffer) bool {
+    var changes = false;
+
+    var y = self.height - 2;
+    while (y > 0) : (y -= 1) {
+        for (0..self.width) |x| {
+            const c: u8 = @truncate(self.buffer[(y - 1) * self.width + x].ch);
+            if (std.ascii.isWhitespace(c)) continue;
+
+            const c_under: u8 = @truncate(self.buffer[y * self.width + x].ch);
+            if (!std.ascii.isWhitespace(c_under)) continue;
+
+            changes = true;
+
+            if ((self.random.int(u16) % 10) > 7) continue;
+
+            self.buffer[y * self.width + x] = self.buffer[(y - 1) * self.width + x];
+            self.buffer[(y - 1) * self.width + x].ch = ' ';
+        }
+    }
+
+    return changes;
+}
+
+pub fn drawBoxCenter(self: *TerminalBuffer, show_borders: bool, blank_box: bool) void {
+    if (self.width < 2 or self.height < 2) return;
+    const x1 = (self.width - @min(self.width - 2, self.box_width)) / 2;
+    const y1 = (self.height - @min(self.height - 2, self.box_height)) / 2;
+    const x2 = (self.width + @min(self.width, self.box_width)) / 2;
+    const y2 = (self.height + @min(self.height, self.box_height)) / 2;
+
+    self.box_x = x1;
+    self.box_y = y1;
+
+    if (show_borders) {
+        _ = termbox.tb_set_cell(@intCast(x1 - 1), @intCast(y1 - 1), self.box_chars.left_up, self.border_fg, self.bg);
+        _ = termbox.tb_set_cell(@intCast(x2), @intCast(y1 - 1), self.box_chars.right_up, self.border_fg, self.bg);
+        _ = termbox.tb_set_cell(@intCast(x1 - 1), @intCast(y2), self.box_chars.left_down, self.border_fg, self.bg);
+        _ = termbox.tb_set_cell(@intCast(x2), @intCast(y2), self.box_chars.right_down, self.border_fg, self.bg);
+
+        var c1 = utils.initCell(self.box_chars.top, self.border_fg, self.bg);
+        var c2 = utils.initCell(self.box_chars.bottom, self.border_fg, self.bg);
+
+        for (0..self.box_width) |i| {
+            _ = utils.putCell(@intCast(x1 + i), @intCast(y1 - 1), &c1);
+            _ = utils.putCell(@intCast(x1 + i), @intCast(y2), &c2);
+        }
+
+        c1.ch = self.box_chars.left;
+        c2.ch = self.box_chars.right;
+
+        for (0..self.box_height) |i| {
+            _ = utils.putCell(@intCast(x1 - 1), @intCast(y1 + i), &c1);
+            _ = utils.putCell(@intCast(x2), @intCast(y1 + i), &c2);
+        }
+    }
+
+    if (blank_box) {
+        const blank = utils.initCell(' ', self.fg, self.bg);
+
+        for (0..self.box_height) |y| {
+            for (0..self.box_width) |x| {
+                _ = utils.putCell(@intCast(x1 + x), @intCast(y1 + y), &blank);
+            }
+        }
+    }
+}
+
+pub fn calculateComponentCoordinates(self: TerminalBuffer) struct {
+    x: u64,
+    y: u64,
+    visible_length: u64,
+} {
+    const x = self.box_x + self.margin_box_h + self.labels_max_length + 1;
+    const y = self.box_y + self.margin_box_v;
+    const visible_length = self.box_x + self.box_width - self.margin_box_h - x;
+
+    return .{
+        .x = x,
+        .y = y,
+        .visible_length = visible_length,
+    };
+}
+
+pub fn drawLabel(self: TerminalBuffer, text: []const u8, x: u64, y: u64) void {
+    const yc: c_int = @intCast(y);
+    const utf8view = std.unicode.Utf8View.init(text) catch return;
+    var utf8 = utf8view.iterator();
+
+    var i = x;
+    while (utf8.nextCodepoint()) |codepoint| : (i += 1) {
+        _ = termbox.tb_set_cell(@intCast(i), yc, codepoint, self.fg, self.bg);
+    }
+}
+
+pub fn drawConfinedLabel(self: TerminalBuffer, text: []const u8, x: u64, y: u64, max_length: u64) void {
+    const yc: c_int = @intCast(y);
+    const utf8view = std.unicode.Utf8View.init(text) catch return;
+    var utf8 = utf8view.iterator();
+
+    var i: usize = 0;
+    while (utf8.nextCodepoint()) |codepoint| : (i += 1) {
+        if (i >= max_length) break;
+        _ = termbox.tb_set_cell(@intCast(i + x), yc, codepoint, self.fg, self.bg);
+    }
+}
+
+pub fn drawCharMultiple(self: TerminalBuffer, char: u8, x: u64, y: u64, length: u64) void {
+    const yc: c_int = @intCast(y);
+    const cell = utils.initCell(char, self.fg, self.bg);
+
+    for (0..length) |xx| _ = utils.putCell(@intCast(x + xx), yc, &cell);
+}

src/tui/components/Desktop.zig

@@ -0,0 +1,223 @@
+const std = @import("std");
+const enums = @import("../../enums.zig");
+const interop = @import("../../interop.zig");
+const TerminalBuffer = @import("../TerminalBuffer.zig");
+const Ini = @import("zigini").Ini;
+const Lang = @import("../../config/Lang.zig");
+
+const Allocator = std.mem.Allocator;
+const EnvironmentList = std.ArrayList(Environment);
+
+const DisplayServer = enums.DisplayServer;
+
+const termbox = interop.termbox;
+
+const Desktop = @This();
+
+pub const Environment = struct {
+    entry_ini: ?Ini(Entry) = null,
+    name: [:0]const u8 = "",
+    xdg_session_desktop: [:0]const u8 = "",
+    xdg_desktop_names: ?[:0]const u8 = "",
+    cmd: []const u8 = "",
+    specifier: []const u8 = "",
+    display_server: DisplayServer = .wayland,
+};
+
+const DesktopEntry = struct {
+    Exec: []const u8 = "",
+    Name: [:0]const u8 = "",
+    DesktopNames: ?[]const u8 = null,
+};
+
+pub const Entry = struct { @"Desktop Entry": DesktopEntry = DesktopEntry{} };
+
+allocator: Allocator,
+buffer: *TerminalBuffer,
+environments: EnvironmentList,
+current: u64,
+visible_length: u64,
+x: u64,
+y: u64,
+lang: Lang,
+
+pub fn init(allocator: Allocator, buffer: *TerminalBuffer, max_length: u64, lang: Lang) !Desktop {
+    return .{
+        .allocator = allocator,
+        .buffer = buffer,
+        .environments = try EnvironmentList.initCapacity(allocator, max_length),
+        .current = 0,
+        .visible_length = 0,
+        .x = 0,
+        .y = 0,
+        .lang = lang,
+    };
+}
+
+pub fn deinit(self: Desktop) void {
+    for (self.environments.items) |*environment| {
+        if (environment.entry_ini) |*entry_ini| entry_ini.deinit();
+        if (environment.xdg_desktop_names) |desktop_name| self.allocator.free(desktop_name);
+        self.allocator.free(environment.xdg_session_desktop);
+    }
+
+    self.environments.deinit();
+}
+
+pub fn position(self: *Desktop, x: u64, y: u64, visible_length: u64) void {
+    self.x = x;
+    self.y = y;
+    self.visible_length = visible_length;
+}
+
+pub fn addEnvironment(self: *Desktop, entry: DesktopEntry, xdg_session_desktop: []const u8, display_server: DisplayServer) !void {
+    var xdg_desktop_names: ?[:0]const u8 = null;
+    if (entry.DesktopNames) |desktop_names| {
+        const desktop_names_z = try self.allocator.dupeZ(u8, desktop_names);
+        for (desktop_names_z) |*c| {
+            if (c.* == ';') c.* = ':';
+        }
+        xdg_desktop_names = desktop_names_z;
+    }
+
+    errdefer {
+        if (xdg_desktop_names) |desktop_names| self.allocator.free(desktop_names);
+    }
+
+    const session_desktop = try self.allocator.dupeZ(u8, xdg_session_desktop);
+    errdefer self.allocator.free(session_desktop);
+
+    try self.environments.append(.{
+        .entry_ini = null,
+        .name = entry.Name,
+        .xdg_session_desktop = session_desktop,
+        .xdg_desktop_names = xdg_desktop_names,
+        .cmd = entry.Exec,
+        .specifier = switch (display_server) {
+            .wayland => self.lang.wayland,
+            .x11 => self.lang.x11,
+            else => self.lang.other,
+        },
+        .display_server = display_server,
+    });
+
+    self.current = self.environments.items.len - 1;
+}
+
+pub fn addEnvironmentWithIni(self: *Desktop, entry_ini: Ini(Entry), xdg_session_desktop: []const u8, display_server: DisplayServer) !void {
+    const entry = entry_ini.data.@"Desktop Entry";
+    var xdg_desktop_names: ?[:0]const u8 = null;
+    if (entry.DesktopNames) |desktop_names| {
+        const desktop_names_z = try self.allocator.dupeZ(u8, desktop_names);
+        for (desktop_names_z) |*c| {
+            if (c.* == ';') c.* = ':';
+        }
+        xdg_desktop_names = desktop_names_z;
+    }
+
+    errdefer {
+        if (xdg_desktop_names) |desktop_names| self.allocator.free(desktop_names);
+    }
+
+    const session_desktop = try self.allocator.dupeZ(u8, xdg_session_desktop);
+    errdefer self.allocator.free(session_desktop);
+
+    try self.environments.append(.{
+        .entry_ini = entry_ini,
+        .name = entry.Name,
+        .xdg_session_desktop = session_desktop,
+        .xdg_desktop_names = xdg_desktop_names,
+        .cmd = entry.Exec,
+        .specifier = switch (display_server) {
+            .wayland => self.lang.wayland,
+            .x11 => self.lang.x11,
+            else => self.lang.other,
+        },
+        .display_server = display_server,
+    });
+
+    self.current = self.environments.items.len - 1;
+}
+
+pub fn crawl(self: *Desktop, path: []const u8, display_server: DisplayServer) !void {
+    var iterable_directory = std.fs.openDirAbsolute(path, .{ .iterate = true }) catch return;
+    defer iterable_directory.close();
+
+    var iterator = iterable_directory.iterate();
+    while (try iterator.next()) |item| {
+        if (!std.mem.eql(u8, std.fs.path.extension(item.name), ".desktop")) continue;
+
+        const entry_path = try std.fmt.allocPrint(self.allocator, "{s}/{s}", .{ path, item.name });
+        defer self.allocator.free(entry_path);
+        var entry_ini = Ini(Entry).init(self.allocator);
+        _ = try entry_ini.readFileToStruct(entry_path, "#", null);
+        errdefer entry_ini.deinit();
+
+        var xdg_session_desktop: []const u8 = undefined;
+        const maybe_desktop_names = entry_ini.data.@"Desktop Entry".DesktopNames;
+        if (maybe_desktop_names) |desktop_names| {
+            xdg_session_desktop = std.mem.sliceTo(desktop_names, ';');
+        } else {
+            // if DesktopNames is empty, we'll take the name of the session file
+            xdg_session_desktop = std.fs.path.stem(item.name);
+        }
+
+        try self.addEnvironmentWithIni(entry_ini, xdg_session_desktop, display_server);
+    }
+}
+
+pub fn handle(self: *Desktop, maybe_event: ?*termbox.tb_event, insert_mode: bool) void {
+    if (maybe_event) |event| blk: {
+        if (event.type != termbox.TB_EVENT_KEY) break :blk;
+
+        switch (event.key) {
+            termbox.TB_KEY_ARROW_LEFT, termbox.TB_KEY_CTRL_H => self.goLeft(),
+            termbox.TB_KEY_ARROW_RIGHT, termbox.TB_KEY_CTRL_L => self.goRight(),
+            else => {
+                if (!insert_mode) {
+                    switch (event.ch) {
+                        'h' => self.goLeft(),
+                        'l' => self.goRight(),
+                        else => {},
+                    }
+                }
+            },
+        }
+    }
+
+    _ = termbox.tb_set_cursor(@intCast(self.x + 2), @intCast(self.y));
+}
+
+pub fn draw(self: Desktop) void {
+    const environment = self.environments.items[self.current];
+
+    const length = @min(environment.name.len, self.visible_length - 3);
+    if (length == 0) return;
+
+    const x = self.buffer.box_x + self.buffer.margin_box_h;
+    const y = self.buffer.box_y + self.buffer.margin_box_v + 2;
+    self.buffer.drawLabel(environment.specifier, x, y);
+
+    _ = termbox.tb_set_cell(@intCast(self.x), @intCast(self.y), '<', self.buffer.fg, self.buffer.bg);
+    _ = termbox.tb_set_cell(@intCast(self.x + self.visible_length - 1), @intCast(self.y), '>', self.buffer.fg, self.buffer.bg);
+
+    self.buffer.drawLabel(environment.name, self.x + 2, self.y);
+}
+
+fn goLeft(self: *Desktop) void {
+    if (self.current == 0) {
+        self.current = self.environments.items.len - 1;
+        return;
+    }
+
+    self.current -= 1;
+}
+
+fn goRight(self: *Desktop) void {
+    if (self.current == self.environments.items.len - 1) {
+        self.current = 0;
+        return;
+    }
+
+    self.current += 1;
+}

src/tui/components/InfoLine.zig

@@ -0,0 +1,33 @@
+const std = @import("std");
+const utils = @import("../utils.zig");
+const TerminalBuffer = @import("../TerminalBuffer.zig");
+
+const InfoLine = @This();
+
+text: []const u8 = "",
+width: u8 = 0,
+
+pub fn setText(self: *InfoLine, text: []const u8) !void {
+    self.width = if (text.len > 0) try utils.strWidth(text) else 0;
+    self.text = text;
+}
+
+pub fn draw(self: InfoLine, buffer: TerminalBuffer) void {
+    if (self.width > 0 and buffer.box_width > self.width) {
+        const label_y = buffer.box_y + buffer.margin_box_v;
+        const x = buffer.box_x + ((buffer.box_width - self.width) / 2);
+
+        buffer.drawLabel(self.text, x, label_y);
+    }
+}
+
+pub fn clearRendered(allocator: std.mem.Allocator, buffer: TerminalBuffer) !void {
+    // draw over the area
+    const y = buffer.box_y + buffer.margin_box_v;
+    const spaces = try allocator.alloc(u8, buffer.box_width);
+    defer allocator.free(spaces);
+
+    @memset(spaces, ' ');
+
+    buffer.drawLabel(spaces, buffer.box_x, y);
+}

src/tui/components/Text.zig

@@ -0,0 +1,149 @@
+const std = @import("std");
+const interop = @import("../../interop.zig");
+const TerminalBuffer = @import("../TerminalBuffer.zig");
+const utils = @import("../utils.zig");
+
+const Allocator = std.mem.Allocator;
+const DynamicString = std.ArrayList(u8);
+
+const termbox = interop.termbox;
+
+const Text = @This();
+
+allocator: Allocator,
+buffer: *TerminalBuffer,
+text: DynamicString,
+end: u64,
+cursor: u64,
+visible_start: u64,
+visible_length: u64,
+x: u64,
+y: u64,
+
+pub fn init(allocator: Allocator, buffer: *TerminalBuffer, max_length: u64) !Text {
+    const text = try DynamicString.initCapacity(allocator, max_length);
+
+    return .{
+        .allocator = allocator,
+        .buffer = buffer,
+        .text = text,
+        .end = 0,
+        .cursor = 0,
+        .visible_start = 0,
+        .visible_length = 0,
+        .x = 0,
+        .y = 0,
+    };
+}
+
+pub fn deinit(self: Text) void {
+    self.text.deinit();
+}
+
+pub fn position(self: *Text, x: u64, y: u64, visible_length: u64) void {
+    self.x = x;
+    self.y = y;
+    self.visible_length = visible_length;
+}
+
+pub fn handle(self: *Text, maybe_event: ?*termbox.tb_event, insert_mode: bool) !void {
+    if (maybe_event) |event| blk: {
+        if (event.type != termbox.TB_EVENT_KEY) break :blk;
+
+        switch (event.key) {
+            termbox.TB_KEY_ARROW_LEFT => self.goLeft(),
+            termbox.TB_KEY_ARROW_RIGHT => self.goRight(),
+            termbox.TB_KEY_DELETE => self.delete(),
+            termbox.TB_KEY_BACKSPACE, termbox.TB_KEY_BACKSPACE2 => {
+                if (insert_mode) {
+                    self.backspace();
+                } else {
+                    self.goLeft();
+                }
+            },
+            termbox.TB_KEY_SPACE => try self.write(' '),
+            else => {
+                if (event.ch > 31 and event.ch < 127) {
+                    if (insert_mode) {
+                        try self.write(@intCast(event.ch));
+                    } else {
+                        switch (event.ch) {
+                            'h' => self.goLeft(),
+                            'l' => self.goRight(),
+                            else => {},
+                        }
+                    }
+                }
+            },
+        }
+    }
+
+    _ = termbox.tb_set_cursor(@intCast(self.x + (self.cursor - self.visible_start)), @intCast(self.y));
+}
+
+pub fn draw(self: Text) void {
+    const length = @min(self.text.items.len, self.visible_length);
+    if (length == 0) return;
+
+    const visible_slice = vs: {
+        if (self.text.items.len > self.visible_length and self.cursor < self.text.items.len) {
+            break :vs self.text.items[self.visible_start..(self.visible_length + self.visible_start)];
+        } else {
+            break :vs self.text.items[self.visible_start..];
+        }
+    };
+
+    self.buffer.drawLabel(visible_slice, self.x, self.y);
+}
+
+pub fn drawMasked(self: Text, mask: u8) void {
+    const length = @min(self.text.items.len, self.visible_length - 1);
+    if (length == 0) return;
+
+    self.buffer.drawCharMultiple(mask, self.x, self.y, length);
+}
+
+pub fn clear(self: *Text) void {
+    self.text.clearRetainingCapacity();
+    self.end = 0;
+    self.cursor = 0;
+    self.visible_start = 0;
+}
+
+fn goLeft(self: *Text) void {
+    if (self.cursor == 0) return;
+    if (self.visible_start > 0) self.visible_start -= 1;
+
+    self.cursor -= 1;
+}
+
+fn goRight(self: *Text) void {
+    if (self.cursor >= self.end) return;
+    if (self.cursor - self.visible_start == self.visible_length - 1) self.visible_start += 1;
+
+    self.cursor += 1;
+}
+
+fn delete(self: *Text) void {
+    if (self.cursor >= self.end) return;
+
+    _ = self.text.orderedRemove(self.cursor);
+
+    self.end -= 1;
+}
+
+fn backspace(self: *Text) void {
+    if (self.cursor == 0) return;
+
+    self.goLeft();
+    self.delete();
+}
+
+fn write(self: *Text, char: u8) !void {
+    if (char == 0) return;
+
+    try self.text.insert(self.cursor, char);
+
+    self.end += 1;
+    self.goRight();
+}

src/tui/utils.zig

@@ -0,0 +1,26 @@
+const std = @import("std");
+const interop = @import("../interop.zig");
+
+const termbox = interop.termbox;
+
+pub fn initCell(ch: u32, fg: u16, bg: u16) termbox.tb_cell {
+    return .{
+        .ch = ch,
+        .fg = fg,
+        .bg = bg,
+    };
+}
+
+pub fn putCell(x: i32, y: i32, cell: *const termbox.tb_cell) c_int {
+    return termbox.tb_set_cell(x, y, cell.ch, cell.fg, cell.bg);
+}
+
+// Every codepoint is assumed to have a width of 1.
+// Since ly should be running in a tty, this should be fine.
+pub fn strWidth(str: []const u8) !u8 {
+    const utf8view = try std.unicode.Utf8View.init(str);
+    var utf8 = utf8view.iterator();
+    var i: u8 = 0;
+    while (utf8.nextCodepoint()) |_| i += 1;
+    return i;
+}

src/utils.c

@@ -1,276 +0,0 @@
-#include "configator.h"
-#include "dragonfail.h"
-#include "inputs.h"
-#include "config.h"
-#include "utils.h"
-
-#include <dirent.h>
-#include <limits.h>
-#include <stdint.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/ioctl.h>
-#include <unistd.h>
-
-#if defined(__DragonFly__) || defined(__FreeBSD__)
-	#include <sys/consio.h>
-#else // linux
-	#include <linux/vt.h>
-#endif
-
-void desktop_crawl(
-	struct desktop* target,
-	char* sessions,
-	enum display_server server)
-{
-	DIR* dir;
-	struct dirent* dir_info;
-	int ok;
-
-	ok = access(sessions, F_OK);
-
-	if (ok == -1)
-	{
-		dgn_throw(DGN_XSESSIONS_DIR);
-		return;
-	}
-
-	dir = opendir(sessions);
-
-	if (dir == NULL)
-	{
-		dgn_throw(DGN_XSESSIONS_OPEN);
-		return;
-	}
-
-	char* name = NULL;
-	char* exec = NULL;
-
-	struct configator_param map_desktop[] =
-	{
-		{"Exec", &exec, config_handle_str},
-		{"Name", &name, config_handle_str},
-	};
-
-	struct configator_param* map[] =
-	{
-		NULL,
-		map_desktop,
-	};
-
-	struct configator_param sections[] =	
-	{
-		{"Desktop Entry", NULL, NULL},
-	};
-
-	uint16_t map_len[] = {0, 2};
-	uint16_t sections_len = 1;
-
-	struct configator desktop_config;
-	desktop_config.map = map;
-	desktop_config.map_len = map_len;
-	desktop_config.sections = sections;
-	desktop_config.sections_len = sections_len;
-
-#if defined(NAME_MAX)
-	char path[NAME_MAX];
-#elif defined(_POSIX_PATH_MAX)
-	char path[_POSIX_PATH_MAX];
-#else
-	char path[1024];
-#endif
-
-	dir_info = readdir(dir);
-
-	while (dir_info != NULL)
-	{
-		if ((dir_info->d_name)[0] == '.')
-		{
-			dir_info = readdir(dir);
-			continue;
-		}
-
-		snprintf(path, (sizeof (path)) - 1, "%s/", sessions);
-		strncat(path, dir_info->d_name, (sizeof (path)) - 1);
-		configator(&desktop_config, path);
-
-		// if these are wayland sessions, add " (Wayland)" to their names,
-		// as long as their names don't already contain that string
-		if (server == DS_WAYLAND && config.wayland_specifier)
-		{
-			const char wayland_specifier[] = " (Wayland)";
-			if (strstr(name, wayland_specifier) == NULL)
-			{
-				name = realloc(name, (strlen(name) + sizeof(wayland_specifier) + 1));
-				// using strcat is safe because the string is constant
-				strcat(name, wayland_specifier);
-			}
-		}
-
-		if ((name != NULL) && (exec != NULL))
-		{
-			input_desktop_add(target, name, exec, server);
-		}
-
-		name = NULL;
-		exec = NULL;
-		dir_info = readdir(dir);
-	}
-
-	closedir(dir);
-}
-
-void desktop_load(struct desktop* target)
-{
-	// we don't care about desktop environments presence
-	// because the fallback shell is always available
-	// so we just dismiss any "throw" for now
-	int err = 0;
-
-	desktop_crawl(target, config.waylandsessions, DS_WAYLAND);
-
-	if (dgn_catch())
-	{
-		++err;
-		dgn_reset();
-	}
-
-	desktop_crawl(target, config.xsessions, DS_XORG);
-
-	if (dgn_catch())
-	{
-		++err;
-		dgn_reset();
-	}
-}
-
-static char* hostname_backup = NULL;
-
-void hostname(char** out)
-{
-	if (hostname_backup != NULL)
-	{
-		*out = hostname_backup;
-		return;
-	}
-
-	int maxlen = sysconf(_SC_HOST_NAME_MAX);
-
-	if (maxlen < 0)
-	{
-		maxlen = _POSIX_HOST_NAME_MAX;
-	}
-
-	hostname_backup = malloc(maxlen + 1);
-
-	if (hostname_backup == NULL)
-	{
-		dgn_throw(DGN_ALLOC);
-		return;
-	}
-
-	if (gethostname(hostname_backup, maxlen) < 0)
-	{
-		dgn_throw(DGN_HOSTNAME);
-		return;
-	}
-
-	hostname_backup[maxlen] = '\0';
-	*out = hostname_backup;
-}
-
-void free_hostname()
-{
-	free(hostname_backup);
-}
-
-void switch_tty(struct term_buf* buf)
-{
-	FILE* console = fopen(config.console_dev, "w");
-
-	if (console == NULL)
-	{
-		buf->info_line = lang.err_console_dev;
-		return;
-	}
-
-	int fd = fileno(console);
-
-	ioctl(fd, VT_ACTIVATE, config.tty);
-	ioctl(fd, VT_WAITACTIVE, config.tty);
-
-	fclose(console);
-}
-
-void save(struct desktop* desktop, struct text* login)
-{
-	if (config.save)
-	{
-		FILE* fp = fopen(config.save_file, "wb+");
-
-		if (fp != NULL)
-		{
-			fprintf(fp, "%s\n%d", login->text, desktop->cur);
-			fclose(fp);
-		}
-	}
-}
-
-void load(struct desktop* desktop, struct text* login)
-{
-	if (!config.load)
-	{
-		return;
-	}
-
-	FILE* fp = fopen(config.save_file, "rb");
-
-	if (fp == NULL)
-	{
-		return;
-	}
-
-	char* line = malloc(config.max_login_len + 1);
-
-	if (line == NULL)
-	{
-		fclose(fp);
-		return;
-	}
-
-	if (fgets(line, config.max_login_len + 1, fp))
-	{
-		int len = strlen(line);
-		strncpy(login->text, line, login->len);
-
-		if (len == 0)
-		{
-			login->end = login->text;
-		}
-		else
-		{
-			login->end = login->text + len - 1;
-			login->text[len - 1] = '\0';
-		}
-	}
-	else
-	{
-		fclose(fp);
-		free(line);
-		return;
-	}
-
-	if (fgets(line, config.max_login_len + 1, fp))
-	{
-		int saved_cur = abs(atoi(line));
-
-		if (saved_cur < desktop->len)
-		{
-			desktop->cur = saved_cur;
-		}
-	}
-
-	fclose(fp);
-	free(line);
-}

src/utils.h

@@ -1,15 +0,0 @@
-#ifndef H_LY_UTILS
-#define H_LY_UTILS
-
-#include "draw.h"
-#include "inputs.h"
-#include "config.h"
-
-void desktop_load(struct desktop* target);
-void hostname(char** out);
-void free_hostname();
-void switch_tty(struct term_buf* buf);
-void save(struct desktop* desktop, struct text* login);
-void load(struct desktop* desktop, struct text* login);
-
-#endif