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
24static int interrupted;
25
26#if defined(LWS_WITH_PLUGINS)
27static const char * const plugin_dirs[] = {
28	LWS_INSTALL_DATADIR"/libwebsockets-test-server/plugins/",
29	NULL
30};
31#endif
32
33static 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)
80void 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
87void sigint_handler(int sig)
88{
89	interrupted = 1;
90}
91#endif
92
93int 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