Initial commit

.gitignore

@@ -0,0 +1,6 @@
+*.out
+*.gch
+vgcore.*
+bin/
+.cache/
+compile_commands.json

Makefile

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+LIBRARIES = -Iinclude
+SOURCES = ./src/* ./cmd/server.c
+OUTPUT_DIR = ./bin
+OUTPUT = -o ${OUTPUT_DIR}/PROG
+INSTALL_OUTPUT = ${OUTPUT_DIR}/PROG
+
+build: output_dir
+	gcc -Wall -pthread ${LIBRARIES} ${SOURCES} ${OUTPUT:PROG=server}
+
+debug: output_dir
+	gcc -Wall -g -pthread ${LIBRARIES} ${SOURCES} ${OUTPUT:PROG=server}
+
+install:
+	mv ${INSTALL_OUTPUT:PROG=server} /usr/bin/
+
+output_dir:
+	mkdir -p ${OUTPUT_DIR}
+
+clean:
+	rm -rf $(OUTPUT_DIR) **.h.gch
+

cmd/server.c

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+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+
+// Local Includes
+#include "httpStruct.h"
+#include "socketHelp.h"
+
+#define PORT 8080
+
+int parseHTTPRequest(char buffer[], struct HTTPRequest *r) {
+	char temp[1];
+	char *token;
+	int line = 0;
+	char * checkLine;
+	checkLine = malloc(1000);
+
+	for (int i = 0; i < strlen(buffer); i++) {
+		temp[0] = buffer[i];
+		if ((!strcmp(temp, "\n")) && (i != 0)) {
+			// Config Check
+			if (line == 0) {
+				token = strtok(checkLine, " ");
+				// HTTP Request Type
+				if (!strcmp(token, "GET")) {
+					r->requestType = malloc(strlen(token));
+					strcpy(r->requestType, token);
+				}
+			} else {
+				token = strtok(checkLine, ":");
+				// Host Check
+				if (!strcmp(token, "Host")) {
+					token = strtok(NULL, "");
+					r->requestHost = malloc(strlen(token));
+					strcpy(r->requestHost, token);
+				}
+				// Reset checkline
+			}
+			if (strlen(checkLine) > 0) {
+				// Clear checkLine
+				memset(checkLine,0,strlen(checkLine));
+			}
+			line++;
+		} else {
+			strcat(checkLine, temp);
+		}
+	}
+	free(checkLine);
+	return 0;
+}
+
+int returnRequest(int socket) {
+	char *hello = "HTTP/1.1 200 OK\nContent-Length: 5\nConnection: close\n\nhello\n\n";
+	printf("Returning\n%s", hello);
+	send(socket, hello, strlen(hello), 0);
+	return 0;
+}
+
+int handleRequest(char buffer[], int socket) {
+	struct HTTPRequest r;
+	// Grabbing relevant information out of request
+	parseHTTPRequest(buffer, &r);
+	returnRequest(socket);
+	return 0;
+}
+
+int main(int argc, char const *argv[]) {
+	struct sockaddr_in address;
+	int server_fd, new_socket;
+	int checkerr = 0;
+	int addrlen = sizeof(address);
+
+	char buffer[1024] = {};
+
+	checkerr = createSocket(PORT, &server_fd, &address, &addrlen);
+
+	if (checkerr != 0) {
+		perror("Error creating socket");
+		exit(EXIT_FAILURE);
+	}
+
+	// Handle incoming requests
+	while(1) {
+		if ((new_socket = accept(server_fd, (struct sockaddr *)&address,
+					(socklen_t *)&addrlen))<0) {
+			perror("Accept connection error");
+			exit(EXIT_FAILURE);
+		}
+		read(new_socket, buffer, 1024);
+		printf("Conn received:\n%s\n", buffer);
+		handleRequest(buffer, new_socket);
+	}
+
+	exit(EXIT_SUCCESS);
+}

include/httpStruct.h

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+#include <stdio.h>
+#include <stdint.h>
+
+// HTTP Request Struct
+struct HTTPRequest {
+	char *requestType;
+	char *requestVersion;
+	char *requestHost;
+};

include/socketHelp.h

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+#include <stdio.h>
+#include <netinet/in.h>
+
+int createSocket(int port, int *server_fd, struct sockaddr_in *address, int *addrlen);
+

src/socketHelp.c

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+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+
+int createSocket(int port, int *server_fd, struct sockaddr_in *address, int *addrlen) {
+	int opt = 1;
+
+	// Create socket fd
+	if ((*server_fd = socket(AF_INET, SOCK_STREAM, 0)) == 0) {
+		perror("socket failed");
+		exit(EXIT_FAILURE);
+	}
+
+	// Attach socket to PORT
+	if (setsockopt(*server_fd, SOL_SOCKET, SO_REUSEADDR |SO_REUSEPORT,
+				&opt, sizeof(opt))) {
+		perror("Set socket opt failure");
+		exit(EXIT_FAILURE);
+	}
+	address->sin_family = AF_INET;
+	address->sin_addr.s_addr = INADDR_ANY;
+	address->sin_port = htons (port);
+
+	// Attach to PORT
+	if (bind(*server_fd, (struct sockaddr *)address,
+				sizeof(*address))<0) {
+		perror("Failed to bind");
+		exit(EXIT_FAILURE);
+	}
+
+	if (listen(*server_fd, 3) < 0) {
+		perror("Failed to listen");
+		exit(EXIT_FAILURE);
+	}
+
+	return 0;
+}