1 /*
2 * lws-minimal-http-server-tls
3 *
4 * Written in 2010-2019 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 * with three extra lines giving it tls (ssl) capabilities, which in
11 * turn allow operation with HTTP/2 if lws was configured for it.
12 *
13 * To keep it simple, it serves stuff from the subdirectory
14 * "./mount-origin" of the directory it was started in.
15 *
16 * You can change that by changing mount.origin below.
17 */
18
19 #include <libwebsockets.h>
20 #include <string.h>
21 #include <signal.h>
22 #include <errno.h>
23
24 static int interrupted;
25
26 #if defined(LWS_WITH_PLUGINS)
27 static const char * const plugin_dirs[] = {
28 LWS_INSTALL_DATADIR"/libwebsockets-test-server/plugins/",
29 NULL
30 };
31 #endif
32
33 static const struct lws_http_mount
34 #if defined(LWS_WITH_SYS_METRICS)
35 mount_metrics = {
36 /* .mount_next */ NULL, /* linked-list "next" */
37 /* .mountpoint */ "/metrics", /* mountpoint URL */
38 /* .origin */ "lws-openmetrics", /* serve from dir */
39 /* .def */ "x", /* default filename */
40 /* .protocol */ "lws-openmetrics",
41 /* .cgienv */ NULL,
42 /* .extra_mimetypes */ NULL,
43 /* .interpret */ NULL,
44 /* .cgi_timeout */ 0,
45 /* .cache_max_age */ 0,
46 /* .auth_mask */ 0,
47 /* .cache_reusable */ 0,
48 /* .cache_revalidate */ 0,
49 /* .cache_intermediaries */ 0,
50 /* .origin_protocol */ LWSMPRO_CALLBACK, /* bind to callback */
51 /* .mountpoint_len */ 8, /* char count */
52 /* .basic_auth_login_file */ NULL,
53 },
54 #endif
55 mount = {
56 #if defined(LWS_WITH_SYS_METRICS)
57 /* .mount_next */ &mount_metrics, /* linked-list "next" */
58 #else
59 /* .mount_next */ NULL, /* linked-list "next" */
60 #endif
61 /* .mountpoint */ "/", /* mountpoint URL */
62 /* .origin */ "./mount-origin", /* serve from dir */
63 /* .def */ "index.html", /* default filename */
64 /* .protocol */ "http-only",
65 /* .cgienv */ NULL,
66 /* .extra_mimetypes */ NULL,
67 /* .interpret */ NULL,
68 /* .cgi_timeout */ 0,
69 /* .cache_max_age */ 0,
70 /* .auth_mask */ 0,
71 /* .cache_reusable */ 0,
72 /* .cache_revalidate */ 0,
73 /* .cache_intermediaries */ 0,
74 /* .origin_protocol */ LWSMPRO_FILE, /* files in a dir */
75 /* .mountpoint_len */ 1, /* char count */
76 /* .basic_auth_login_file */ NULL,
77 };
78
79 #if !defined(WIN32)
sigint_handler(int sig,siginfo_t * siginfo,void * context)80 void sigint_handler(int sig, siginfo_t *siginfo, void *context)
81 {
82 pid_t sender_pid = siginfo->si_pid;
83 lwsl_err("%s: sig %d from pid %lu\n", __func__, sig, (unsigned long)sender_pid);
84 interrupted = 1;
85 }
86 #else
sigint_handler(int sig)87 void sigint_handler(int sig)
88 {
89 interrupted = 1;
90 }
91 #endif
92
main(int argc,const char ** argv)93 int main(int argc, const char **argv)
94 {
95 struct lws_context_creation_info info;
96 struct lws_context *context;
97 #if !defined(WIN32)
98 struct sigaction siga;
99 #endif
100 const char *p;
101 int n = 0;
102
103 #if !defined(WIN32)
104 memset(&siga, 0, sizeof(siga));
105 siga.sa_sigaction = sigint_handler;
106 siga.sa_flags |= SA_SIGINFO; // get detail info
107
108 // change signal action,
109 if (sigaction(SIGINT, &siga, NULL) != 0) {
110 printf("error sigaction()");
111 return errno;
112 }
113 #else
114 signal(SIGINT, sigint_handler);
115 #endif
116 memset(&info, 0, sizeof info); /* otherwise uninitialized garbage */
117 lws_cmdline_option_handle_builtin(argc, argv, &info);
118 lwsl_user("LWS minimal http server TLS | visit https://localhost:7681\n");
119
120 info.port = 7681;
121 if ((p = lws_cmdline_option(argc, argv, "--port")))
122 info.port = atoi(p);
123 info.mounts = &mount;
124 info.error_document_404 = "/404.html";
125 info.options = LWS_SERVER_OPTION_DO_SSL_GLOBAL_INIT |
126 LWS_SERVER_OPTION_HTTP_HEADERS_SECURITY_BEST_PRACTICES_ENFORCE;
127 info.ssl_cert_filepath = "localhost-100y.cert";
128 info.ssl_private_key_filepath = "localhost-100y.key";
129 info.fo_listen_queue = 32;
130
131 #if defined(LWS_WITH_PLUGINS)
132 info.plugin_dirs = plugin_dirs;
133 #endif
134
135 if (lws_cmdline_option(argc, argv, "-h"))
136 info.options |= LWS_SERVER_OPTION_VHOST_UPG_STRICT_HOST_CHECK;
137
138 context = lws_create_context(&info);
139 if (!context) {
140 lwsl_err("lws init failed\n");
141 return 1;
142 }
143
144 while (n >= 0 && !interrupted)
145 n = lws_service(context, 0);
146
147 lws_context_destroy(context);
148
149 return 0;
150 }
151