2 * uhttpd - Tiny single-threaded httpd
4 * Copyright (C) 2010-2013 Jo-Philipp Wich <xm@subsignal.org>
5 * Copyright (C) 2013 Felix Fietkau <nbd@openwrt.org>
7 * Permission to use, copy, modify, and/or distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
21 #include <libubox/blobmsg.h>
24 static LIST_HEAD(interpreters);
26 void uh_interpreter_add(const char *ext, const char *path)
28 struct interpreter *in;
29 char *new_ext, *new_path;
31 in = calloc_a(sizeof(*in),
32 &new_ext, strlen(ext) + 1,
33 &new_path, strlen(path) + 1);
35 in->ext = strcpy(new_ext, ext);
36 in->path = strcpy(new_path, path);
37 list_add_tail(&in->list, &interpreters);
40 static void cgi_main(struct client *cl, struct path_info *pi, char *url)
42 const struct interpreter *ip = pi->ip;
46 setenv("PATH", conf.cgi_path, 1);
48 for (var = uh_get_process_vars(cl, pi); var->name; var++) {
52 setenv(var->name, var->value, 1);
58 execl(ip->path, ip->path, pi->phys, NULL);
60 execl(pi->phys, pi->phys, NULL);
62 printf("Status: 500 Internal Server Error\r\n\r\n"
63 "Unable to launch the requested CGI program:\n"
64 " %s: %s\n", ip ? ip->path : pi->phys, strerror(errno));
67 static void cgi_handle_request(struct client *cl, char *url, struct path_info *pi)
69 unsigned int mode = S_IFREG | S_IXOTH;
71 if (!pi->ip && !((pi->stat.st_mode & mode) == mode)) {
72 uh_client_error(cl, 403, "Forbidden",
73 "You don't have permission to access %s on this server.",
78 if (!uh_create_process(cl, pi, url, cgi_main)) {
79 uh_client_error(cl, 500, "Internal Server Error",
80 "Failed to create CGI process: %s", strerror(errno));
87 static bool check_cgi_path(struct path_info *pi, const char *url)
89 struct interpreter *ip;
90 const char *path = pi->phys;
91 int path_len = strlen(path);
93 list_for_each_entry(ip, &interpreters, list) {
94 int len = strlen(ip->ext);
99 if (strcmp(path + path_len - len, ip->ext) != 0)
107 return uh_path_match(conf.cgi_docroot_path, pi->phys);
110 struct dispatch_handler cgi_dispatch = {
112 .check_path = check_cgi_path,
113 .handle_request = cgi_handle_request,