1 /*
2 * lws-minimal-http-server-cgi
3 *
4 * Written in 2010-2020 by Andy Green <andy@warmcat.com>
5 *
6 * This file is made available under the Creative Commons CC0 1.0
7 * Universal Public Domain Dedication.
8 *
9 * This demonstrates the most minimal http server you can make with lws.
10 *
11 * To keep it simple, it serves stuff from the subdirectory
12 * "./mount-origin" of the directory it was started in.
13 * You can change that by changing mount.origin below.
14 */
15
16 #include <libwebsockets.h>
17 #include <string.h>
18 #include <signal.h>
19
20 static int interrupted;
21 static char cgi_script_fullpath[256];
22
23 static const struct lws_http_mount mount = {
24 /* .mount_next */ NULL, /* linked-list "next" */
25 /* .mountpoint */ "/", /* mountpoint URL */
26 /* .origin */ cgi_script_fullpath, /* cgi script */
27 /* .def */ "/", /* default filename */
28 /* .protocol */ NULL,
29 /* .cgienv */ NULL,
30 /* .extra_mimetypes */ NULL,
31 /* .interpret */ NULL,
32 /* .cgi_timeout */ 0,
33 /* .cache_max_age */ 0,
34 /* .auth_mask */ 0,
35 /* .cache_reusable */ 0,
36 /* .cache_revalidate */ 0,
37 /* .cache_intermediaries */ 0,
38 /* .origin_protocol */ LWSMPRO_CGI, /* files in a dir */
39 /* .mountpoint_len */ 1, /* char count */
40 /* .basic_auth_login_file */ NULL,
41 };
42
sigint_handler(int sig)43 void sigint_handler(int sig)
44 {
45 interrupted = 1;
46 }
47
main(int argc,const char ** argv)48 int main(int argc, const char **argv)
49 {
50 struct lws_context_creation_info info;
51 struct lws_context *context;
52 const char *p;
53 int n = 0, logs = LLL_USER | LLL_ERR | LLL_WARN | LLL_NOTICE
54 /* for LLL_ verbosity above NOTICE to be built into lws,
55 * lws must have been configured and built with
56 * -DCMAKE_BUILD_TYPE=DEBUG instead of =RELEASE */
57 /* | LLL_INFO */ /* | LLL_PARSER */ /* | LLL_HEADER */
58 /* | LLL_EXT */ /* | LLL_CLIENT */ /* | LLL_LATENCY */
59 /* | LLL_DEBUG */;
60
61 signal(SIGINT, sigint_handler);
62
63 if ((p = lws_cmdline_option(argc, argv, "-d")))
64 logs = atoi(p);
65
66 lws_set_log_level(logs, NULL);
67 lwsl_user("LWS minimal http server | visit http://localhost:7681\n");
68
69 {
70 char cwd[128];
71 cwd[0] = '\0';
72 getcwd(cwd, sizeof(cwd));
73
74 lws_snprintf(cgi_script_fullpath, sizeof(cgi_script_fullpath),
75 "%s/my-cgi-script.sh", cwd);
76 }
77
78 memset(&info, 0, sizeof info); /* otherwise uninitialized garbage */
79 info.port = 7681;
80 info.mounts = &mount;
81 info.error_document_404 = "/404.html";
82 info.options =
83 LWS_SERVER_OPTION_HTTP_HEADERS_SECURITY_BEST_PRACTICES_ENFORCE;
84
85 #if defined(LWS_WITH_TLS)
86 if (lws_cmdline_option(argc, argv, "-s")) {
87 info.options |= LWS_SERVER_OPTION_DO_SSL_GLOBAL_INIT;
88 info.ssl_cert_filepath = "localhost-100y.cert";
89 info.ssl_private_key_filepath = "localhost-100y.key";
90 }
91 #endif
92
93 context = lws_create_context(&info);
94 if (!context) {
95 lwsl_err("lws init failed\n");
96 return 1;
97 }
98
99 while (n >= 0 && !interrupted)
100 n = lws_service(context, 1000);
101
102 lws_context_destroy(context);
103
104 return 0;
105 }
106