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Better error handling and debug logging

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Robby Zambito
2026-01-24 18:53:42 -05:00
parent cf365673b5
commit c3b17f8267
2 changed files with 19 additions and 14 deletions
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2
src/RawSocket.zig
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@@ -15,7 +15,7 @@ const Ifconf = extern struct {
}; };
pub fn init() !RawSocket { pub fn init() !RawSocket {
const socket: i32 = @intCast(std.os.linux.socket(std.os.linux.AF.PACKET, std.os.linux.SOCK.RAW, 0)); const socket: i32 = std.math.cast(i32, std.os.linux.socket(std.os.linux.AF.PACKET, std.os.linux.SOCK.RAW, 0)) orelse return error.SocketError;
if (socket < 0) return error.SocketError; if (socket < 0) return error.SocketError;
var ifreq_storage: [16]std.os.linux.ifreq = undefined; var ifreq_storage: [16]std.os.linux.ifreq = undefined;

31
src/main.zig
View File

@@ -1,5 +1,3 @@
const is_debug = builtin.mode == .Debug;
const help = const help =
\\-h, --help Display this help and exit. \\-h, --help Display this help and exit.
\\-r, --relay <str> A relay message to send. \\-r, --relay <str> A relay message to send.
@@ -43,7 +41,7 @@ pub fn main(init: std.process.Init) !void {
if (to_option.get(args[i])) |opt| { if (to_option.get(args[i])) |opt| {
switch (opt) { switch (opt) {
.help => { .help => {
std.debug.print("{s}\n", .{help}); std.debug.print("{s}", .{help});
return; return;
}, },
.relay => { .relay => {
@@ -84,7 +82,7 @@ pub fn main(init: std.process.Init) !void {
return error.InvalidArguments; return error.InvalidArguments;
} }
var client: SaprusClient = try .init(); var client = try SaprusClient.init();
defer client.deinit(); defer client.deinit();
if (flags.relay != null) { if (flags.relay != null) {
@@ -96,7 +94,7 @@ pub fn main(init: std.process.Init) !void {
chunk_writer.end = 0; chunk_writer.end = 0;
try chunk_writer.print("{b64}", .{chunk}); try chunk_writer.print("{b64}", .{chunk});
try client.sendRelay(init.io, chunk_writer.buffered(), parseDest(flags.dest)); try client.sendRelay(init.io, chunk_writer.buffered(), parseDest(flags.dest));
try init.io.sleep(.fromMilliseconds(40), .real); try init.io.sleep(.fromMilliseconds(40), .boot);
} }
} else { } else {
var stdin_file: std.Io.File = .stdin(); var stdin_file: std.Io.File = .stdin();
@@ -114,7 +112,7 @@ pub fn main(init: std.process.Init) !void {
chunk_writer.end = 0; chunk_writer.end = 0;
try chunk_writer.print("{b64}", .{stdin.buffered()}); try chunk_writer.print("{b64}", .{stdin.buffered()});
try client.sendRelay(init.io, chunk_writer.buffered(), parseDest(flags.dest)); try client.sendRelay(init.io, chunk_writer.buffered(), parseDest(flags.dest));
try init.io.sleep(.fromMilliseconds(40), .real); try init.io.sleep(.fromMilliseconds(40), .boot);
try stdin.discardAll(stdin.end); try stdin.discardAll(stdin.end);
} else |err| switch (err) { } else |err| switch (err) {
error.EndOfStream => { error.EndOfStream => {
@@ -145,7 +143,7 @@ pub fn main(init: std.process.Init) !void {
log.debug("Connection started", .{}); log.debug("Connection started", .{});
while (true) { next_message: while (true) {
var res_buf: [2048]u8 = undefined; var res_buf: [2048]u8 = undefined;
const next = connection.next(init.io, &res_buf) catch { const next = connection.next(init.io, &res_buf) catch {
try init.io.sleep(.fromSeconds(retry_seconds), .boot); try init.io.sleep(.fromSeconds(retry_seconds), .boot);
@@ -156,7 +154,7 @@ pub fn main(init: std.process.Init) !void {
var connection_payload_buf: [2048]u8 = undefined; var connection_payload_buf: [2048]u8 = undefined;
const connection_payload = connection_payload_buf[0..try b64d.calcSizeForSlice(next)]; const connection_payload = connection_payload_buf[0..try b64d.calcSizeForSlice(next)];
b64d.decode(connection_payload, next) catch { b64d.decode(connection_payload, next) catch {
// TODO: debug log log.debug("Failed to decode message, skipping: '{s}'", .{connection_payload});
continue; continue;
}; };
@@ -171,17 +169,24 @@ pub fn main(init: std.process.Init) !void {
var child_stderr: std.ArrayList(u8) = .empty; var child_stderr: std.ArrayList(u8) = .empty;
defer child_stderr.deinit(init.gpa); defer child_stderr.deinit(init.gpa);
try child.collectOutput(init.gpa, &child_stdout, &child_stderr, std.math.maxInt(usize)); child.collectOutput(init.gpa, &child_stdout, &child_stderr, std.math.maxInt(usize)) catch |err| {
log.debug("Failed to collect output: {t}", .{err});
continue;
};
var cmd_output_buf: [2048]u8 = undefined; var cmd_output_buf: [SaprusClient.max_payload_len * 2]u8 = undefined;
var cmd_output: Writer = .fixed(&cmd_output_buf); var cmd_output: Writer = .fixed(&cmd_output_buf);
var cmd_output_window_iter = std.mem.window(u8, child_stdout.items, SaprusClient.max_payload_len, SaprusClient.max_payload_len); var cmd_output_window_iter = std.mem.window(u8, child_stdout.items, SaprusClient.max_payload_len, SaprusClient.max_payload_len);
while (cmd_output_window_iter.next()) |chunk| { while (cmd_output_window_iter.next()) |chunk| {
cmd_output.end = 0; cmd_output.end = 0;
try cmd_output.print("{b64}", .{chunk}); // Unreachable because the cmd_output_buf is twice the size of the chunk.
try connection.send(init.io, cmd_output.buffered()); cmd_output.print("{b64}", .{chunk}) catch unreachable;
try init.io.sleep(.fromMilliseconds(40), .real); connection.send(init.io, cmd_output.buffered()) catch |err| {
log.debug("Failed to send connection chunk: {t}", .{err});
continue :next_message;
};
try init.io.sleep(.fromMilliseconds(40), .boot);
} }
} }
} }