postnummer-app/backend/main.c

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8.7 KiB
C
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#include "http.h"
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#include "native.h"
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#include <signal.h>
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#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
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#include <stdlib.h>
#include <string.h>
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const uint16_t port = 8201;
int server_socket = 0;
void int_handler(int a)
{
(void)a;
printf("=== terminated ===\n");
if (server_socket != 0)
close(server_socket);
exit(1);
}
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int main(void)
{
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init_sockets();
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signal(SIGINT, &int_handler);
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printf("starting server...\n");
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server_socket = socket(AF_INET, SOCK_STREAM, 0);
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if (server_socket < 0) {
printf("error: could not open socket\n");
return 1;
}
struct sockaddr_in server;
server.sin_addr.s_addr = inet_addr("127.0.0.1");
server.sin_family = AF_INET;
server.sin_port = htons(port);
if (bind(server_socket, (struct sockaddr*)&server, sizeof(server)) > 0) {
printf("error: could not bind socket\n");
return 1;
}
if (listen(server_socket, SOMAXCONN) < 0) {
printf("error: could not listen on server");
return 1;
}
printf("listening on port %d\n", port);
while (true) {
struct sockaddr_in client;
socklen_t client_size;
printf("waiting for client...\n");
int client_socket = accept(server_socket, (struct sockaddr*)&client, &client_size);
if (client_socket < 0) {
printf("error: could not accept connection\n");
continue;
}
printf("client connected\n");
while (true) {
uint8_t buffer[8192] = { 0 };
ssize_t read_size = recv(client_socket, buffer, 8192, 0);
if (read_size < 0) {
printf("error: could not recieve\n");
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close_socket(client_socket);
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break;
} else if (read_size == 0) {
printf("client disconnected\n");
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close_socket(client_socket);
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break;
}
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printf("=== recieved start ===\n%s\n=== recieved end ===\n", buffer);
HttpRequestHeader header
= parse_http_request_header((char*)buffer, strlen((char*)buffer));
printf("method: %d\n", header.method);
printf("path_index: %ld\n", header.path_index);
printf("path_length: %ld\n", header.path_length);
printf("content_length: %ld\n", header.content_length);
printf("body_index: %ld\n", header.body_index);
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char* path = calloc(header.path_length + 1, sizeof(char));
strncpy(path, (char*)&buffer[header.path_index], header.path_length);
printf("path: %s\n", path);
if (strncmp(path, "/api", 4) == 0) {
// something something api
} else {
if (strstr(path, "..") != NULL) {
uint8_t send_buffer[]
= "HTTP/1.1 400 BAD\r\n"
"Content-Type: text/html\r\n"
"\r\n"
"<!DOCTYPE html><html><head><meta charset=\"utf-8\"><title>Bad "
"request</title></head><body><h1>Fuck you!</h1></body></html>\r\n";
ssize_t written = send(client_socket, send_buffer, sizeof(send_buffer), 0);
if (written < 0) {
printf("error: could not write\n");
close_socket(client_socket);
break;
}
} else if (header.path_length == 0 || strncmp(path, "/", header.path_length) == 0) {
FILE* file = fopen("../frontend/index.html", "r");
if (file == NULL) {
printf("error: could not open file\n");
close_socket(client_socket);
break;
}
uint8_t send_buffer[] = "HTTP/1.1 200 OK\r\n"
"Content-Type: text/html\r\n"
"\r\n";
ssize_t written = send(client_socket, send_buffer, sizeof(send_buffer), 0);
if (written < 0) {
printf("error: could not write\n");
close_socket(client_socket);
break;
}
char char_read;
while ((char_read = (char)fgetc(file)) != EOF) {
write(client_socket, &char_read, sizeof(char));
}
} else {
char rootpath[] = "../frontend";
size_t filepath_size = sizeof(rootpath) + header.path_length + 1;
char* filepath = calloc(filepath_size, sizeof(char));
snprintf(filepath, filepath_size, "%s%s", rootpath, path);
char* dot = strrchr(path, '.');
char mime_type[20] = { 0 };
char file_flag[3] = { 'r', 0 };
if (dot != NULL && strncmp(dot, ".html", 5) == 0) {
snprintf(mime_type, 20, "text/html");
} else if (dot != NULL && strncmp(dot, ".css", 4) == 0) {
snprintf(mime_type, 20, "text/css");
} else if (dot != NULL && strncmp(dot, ".js", 3) == 0) {
snprintf(mime_type, 20, "text/javascript");
} else if (dot != NULL && strncmp(dot, ".ico", 4) == 0) {
snprintf(mime_type, 20, "image/x-icon");
} else if (dot != NULL && strncmp(dot, ".jpg", 4) == 0) {
snprintf(mime_type, 20, "image/jpeg");
file_flag[1] = 'b';
} else if (dot != NULL && strncmp(dot, ".png", 4) == 0) {
snprintf(mime_type, 20, "image/png");
file_flag[1] = 'b';
} else if (dot != NULL && strncmp(dot, ".woff2", 6) == 0) {
snprintf(mime_type, 20, "font/woff2");
file_flag[1] = 'b';
} else {
printf("error: unknown file type\n");
close_socket(client_socket);
break;
}
printf("\n %s | %s \n", file_flag, filepath);
FILE* file = fopen(filepath, file_flag);
if (file == NULL) {
printf("error: could not open file\n");
close_socket(client_socket);
break;
}
char send_buffer_1[] = "HTTP/1.1 200 OK\r\n"
"Content-Type: ";
char send_buffer_2[] = "\r\n"
"\r\n";
ssize_t written
= send(client_socket, send_buffer_1, strlen(send_buffer_1) - 1, 0);
if (written < 0) {
printf("error: could not write\n");
close_socket(client_socket);
break;
}
written = send(client_socket, mime_type, strlen(mime_type), 0);
if (written < 0) {
printf("error: could not write\n");
close_socket(client_socket);
break;
}
written = send(client_socket, send_buffer_2, strlen(send_buffer_2), 0);
if (written < 0) {
printf("error: could not write\n");
close_socket(client_socket);
break;
}
int char_read;
while ((char_read = fgetc(file)) != EOF) {
write(client_socket, (char*)&char_read, sizeof(char));
}
free(filepath);
fclose(file);
}
}
free(path);
/* uint8_t send_buffer[]
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= "HTTP/1.1 200 OK\r\n"
"Content-Type: text/html\r\n"
"\r\n"
"<!DOCTYPE><html><head><meta charset=\"utf-8\"><title>hej med "
"dig</title></head><body><h1>fuck c hashtag</h1></body></html>\r\n"
"\r\n";
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ssize_t written = send(client_socket, send_buffer, sizeof(send_buffer), 0);
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if (written < 0) {
printf("error: could not write\n");
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close_socket(client_socket);
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break;
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} */
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printf("disconnecting client\n");
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close_socket(client_socket);
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break;
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}
}
return 0;
}