2024-05-14 18:34:20 +07:00
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#include <stdio.h>
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2024-05-15 14:52:38 +07:00
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#include <string.h>
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2024-05-15 20:47:03 +07:00
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#include <errno.h>
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#include <arpa/inet.h>
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2024-05-14 18:34:20 +07:00
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#include <sys/socket.h>
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2024-05-15 14:52:38 +07:00
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#include <unistd.h>
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2024-05-14 18:34:20 +07:00
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2024-05-16 15:54:17 +07:00
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#include <time.h>
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#include "server.h"
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int send_response(int fd, char *header, char *content_type, void *body, int content_length) {
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const int max_response_size = 65536;
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char response[max_response_size];
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2024-05-23 19:31:49 +07:00
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time_t current = time(NULL);
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char date_time[30];
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strftime(date_time, sizeof(date_time), "%a, %d %b %Y %H:%M:%S %Z", localtime(¤t));
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int header_length = sprintf(response,
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2024-05-16 15:54:17 +07:00
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"%s\n"
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2024-05-22 20:58:28 +07:00
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"Server: %s\n"
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"Date: %s\n"
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2024-05-16 15:54:17 +07:00
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"Connection: close\n"
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"Content-Length: %d\n"
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"Content-Type: %s\n"
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"\n",
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2024-05-23 19:31:49 +07:00
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header, SERVER_VERSION, date_time, content_length, content_type);
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2024-05-16 15:54:17 +07:00
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2024-05-23 19:31:49 +07:00
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printf("%s\n", (char *)body);
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2024-05-16 15:54:17 +07:00
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2024-05-23 19:31:49 +07:00
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//printf("%p\n", (char *)response);
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//printf("%p\n", &header_length);
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//printf("%p\n", (void *)(response + header_length));
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memcpy(response + header_length, body, content_length);
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printf("%s\n", response);
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2024-05-22 20:58:28 +07:00
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2024-05-23 19:31:49 +07:00
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int write_res = write(fd, response, header_length + content_length);
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if (write_res < 0) {
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perror("webserver (write)");
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return write_res;
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}
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2024-05-22 20:58:28 +07:00
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2024-05-23 19:31:49 +07:00
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return write_res;
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2024-05-22 20:58:28 +07:00
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}
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2024-05-17 23:12:56 +07:00
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2024-05-14 18:34:20 +07:00
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int main() {
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2024-05-15 14:52:38 +07:00
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char buffer[BUFFER_SIZE];
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2024-05-17 23:12:56 +07:00
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// char resp[] = "HTTP/1.0 200 OK\r\n"
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// "Server: webserver-c\r\n"
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// "Content-type: text/html\r\n\r\n"
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// "<html>hello, world</html>\r\n";
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2024-05-15 14:52:38 +07:00
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// create a socket
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2024-05-14 18:34:20 +07:00
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int sockfd = socket(AF_INET, SOCK_STREAM, 0);
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2024-05-15 14:52:38 +07:00
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if (sockfd == -1) {
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2024-05-15 15:59:13 +07:00
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perror("webserver (socket)");
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2024-05-14 18:34:20 +07:00
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return 1;
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}
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printf("socket created successfully\n");
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2024-05-15 14:52:38 +07:00
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// create the address to bind the socket to
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2024-05-14 20:44:39 +07:00
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struct sockaddr_in host_addr;
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int host_addrlen = sizeof(host_addr);
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host_addr.sin_family = AF_INET;
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host_addr.sin_port = htons(PORT);
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host_addr.sin_addr.s_addr = htonl(INADDR_ANY);
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2024-05-15 15:59:13 +07:00
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// create client address
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struct sockaddr_in client_addr;
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int client_addrlen = sizeof(client_addr);
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2024-05-15 14:52:38 +07:00
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// Bind the socket to the address
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if (bind(sockfd, (struct sockaddr *) &host_addr, host_addrlen) != 0) {
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2024-05-14 20:44:39 +07:00
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perror("webserver (bind)");
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return 1;
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}
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printf("socket successfully bound to address\n");
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2024-05-15 14:52:38 +07:00
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// listen to incoming connections
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if (listen(sockfd, SOMAXCONN) != 0) {
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perror("webserver (listen)");
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return 1;
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}
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printf("server listening for connections\n");
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for (;;) {
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// accept incoming connections
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2024-05-15 15:59:13 +07:00
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int newsockfd = accept(sockfd, (struct sockaddr *) &host_addr, (socklen_t *) &host_addrlen);
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2024-05-15 14:52:38 +07:00
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if (newsockfd < 0) {
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perror("webserver (accept)");
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continue;
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}
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printf("connection accepted\n");
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2024-05-15 15:59:13 +07:00
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// get client address
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int sockn = getsockname(newsockfd, (struct sockaddr *) &client_addr, (socklen_t *) &client_addrlen);
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if(sockn < 0) {
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perror("webserver (getsockname)");
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continue;
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}
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2024-05-15 14:52:38 +07:00
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// read from the socket
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int valread = read(newsockfd, buffer, BUFFER_SIZE);
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if (valread < 0) {
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perror("webserver (read)");
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continue;
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}
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2024-05-15 15:59:13 +07:00
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// read the request
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char method[BUFFER_SIZE], uri[BUFFER_SIZE], version[BUFFER_SIZE];
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sscanf(buffer, "%s %s %s", method, uri, version);
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printf("[%s:%u] %s %s %s\n", inet_ntoa(client_addr.sin_addr), ntohs(client_addr.sin_port), method, version, uri);
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2024-05-15 20:47:03 +07:00
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// check if request is GET request
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if (strncmp("GET", method, 7) != 0) {
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2024-05-17 23:12:56 +07:00
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// const char resp[] = "HTTP/1.0 400 Bad Request\r\n"
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// "Server: webserver-c\r\n"
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// "Content-Type: text/html\r\n\r\n";
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char resp[100];
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int resp_size = snprintf(resp, 100,
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"%s\r\n"
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"Server: %s\r\n"
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"Content-Type: %s\r\n"
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"\r\n",
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BAD_REQUEST_HEAD, SERVER_VERSION, "text/html");
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int valwrite = write(newsockfd, resp, resp_size);
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if (valwrite < 0) {
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perror("webserver (write)");
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continue;
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}
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} else {
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2024-05-22 20:58:28 +07:00
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// char resp[100];
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// int resp_size = snprintf(resp, 100,
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// "%s\r\n"
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// "Server: %s\r\n"
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// "Content-Type: %s\r\n"
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// "\r\n",
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// OK_HEAD, SERVER_VERSION, "text/html");
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//
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// int valwrite = write(newsockfd, resp, resp_size);
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// printf("%s\n", OK_HEAD);
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// if (valwrite < 0) {
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// perror("webserver (write)");
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// continue;
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// }
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char body[100];
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2024-05-23 19:31:49 +07:00
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int body_size = snprintf(body, 100, "%s\r\n", "hello what up bruh");
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printf("%d\n", body_size);
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send_response(newsockfd, "HTTP/1.1 200 OK", "text/html", body, (body_size+1));
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2024-05-15 20:47:03 +07:00
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}
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2024-05-15 14:52:38 +07:00
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// write to the socket
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2024-05-17 23:12:56 +07:00
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// int valwrite = write(newsockfd, resp, strlen(resp));
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// if (valwrite < 0) {
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// perror("webserver (write)");
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// continue;
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// }
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2024-05-15 14:52:38 +07:00
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close(newsockfd);
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}
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2024-05-14 20:44:39 +07:00
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2024-05-14 18:34:20 +07:00
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return 0;
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}
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