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#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <unistd.h>
#include "file.h"
#include "http.h"
#include "net.h"
#define CFWS_DEFAULT_PORT 8080
static int serverfd;
static void handle_request(const struct http_request *, int);
static void handle_sigint(int signum)
{
(void)signum;
shutdown(serverfd, SHUT_RDWR);
}
int main(int argc, char *argv[])
{
int port = CFWS_DEFAULT_PORT;
int clientfd;
struct http_request request;
signal(SIGINT, handle_sigint);
/* Prevent the program from quitting if it attempts to write to a closed
* socket. */
signal(SIGPIPE, SIG_IGN);
serverfd = net_init_server(port);
if (serverfd == -1)
return 1;
printf("Serving a directory at localhost:%d\n", port);
while (1) {
int rc = net_next_request(serverfd, &clientfd, &request);
if (rc != 0)
break;
handle_request(&request, clientfd);
http_free_request(&request);
close(clientfd);
}
close(serverfd);
return 0;
}
static void handle_request(const struct http_request *req, int sockfd)
{
char *filepath = NULL;
enum http_res_code res_code;
enum serve_method method;
if (req->method == HTTP_METHOD_UNKNOWN) {
method = SERVE_METHOD_ERROR;
res_code = HTTP_RESPONSE_NOTIMPLEMENTED;
} else if (req->uri == NULL) {
method = SERVE_METHOD_ERROR;
res_code = HTTP_RESPONSE_BADREQUEST;
} else {
/* Find the local path for the resource and decide how to serve it. */
filepath = file_path_for_uri(req->uri);
method = file_method_for_path(filepath, &res_code);
}
/* Write the status line and (TODO) extra headers */
http_response_statusline(res_code, sockfd);
/* Use the chosen method to fill in the rest of the response */
switch (method) {
case SERVE_METHOD_FILE:
file_read(filepath, sockfd);
break;
case SERVE_METHOD_PHP:
file_read_php(filepath, req, sockfd);
break;
case SERVE_METHOD_ERROR: {
const char *errmsg = "Content-Type: text/plain\r\n\r\nEpic fail";
write(sockfd, errmsg, strlen(errmsg));
break;
}
}
if (filepath)
free(filepath);
}
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