d459eb1841dd84a872d468204486179d89b6a67b
[asterisk/asterisk.git] / main / http.c
1 /*
2  * Asterisk -- An open source telephony toolkit.
3  *
4  * Copyright (C) 1999 - 2006, Digium, Inc.
5  *
6  * Mark Spencer <markster@digium.com>
7  *
8  * See http://www.asterisk.org for more information about
9  * the Asterisk project. Please do not directly contact
10  * any of the maintainers of this project for assistance;
11  * the project provides a web site, mailing lists and IRC
12  * channels for your use.
13  *
14  * This program is free software, distributed under the terms of
15  * the GNU General Public License Version 2. See the LICENSE file
16  * at the top of the source tree.
17  */
18
19 /*!
20  * \file
21  * \brief http server for AMI access
22  *
23  * \author Mark Spencer <markster@digium.com>
24  *
25  * This program implements a tiny http server
26  * and was inspired by micro-httpd by Jef Poskanzer
27  *
28  * GMime http://spruce.sourceforge.net/gmime/
29  *
30  * \ref AstHTTP - AMI over the http protocol
31  */
32
33 /*! \li \ref http.c uses the configuration file \ref http.conf
34  * \addtogroup configuration_file
35  */
36
37 /*! \page http.conf http.conf
38  * \verbinclude http.conf.sample
39  */
40
41 /*** MODULEINFO
42         <support_level>core</support_level>
43  ***/
44
45 #include "asterisk.h"
46
47 ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
48
49 #include <time.h>
50 #include <sys/time.h>
51 #include <sys/stat.h>
52 #include <sys/signal.h>
53 #include <fcntl.h>
54
55 #include "asterisk/paths.h"     /* use ast_config_AST_DATA_DIR */
56 #include "asterisk/cli.h"
57 #include "asterisk/tcptls.h"
58 #include "asterisk/http.h"
59 #include "asterisk/utils.h"
60 #include "asterisk/strings.h"
61 #include "asterisk/config.h"
62 #include "asterisk/stringfields.h"
63 #include "asterisk/ast_version.h"
64 #include "asterisk/manager.h"
65 #include "asterisk/_private.h"
66 #include "asterisk/astobj2.h"
67 #include "asterisk/netsock2.h"
68
69 #define MAX_PREFIX 80
70 #define DEFAULT_PORT 8088
71 #define DEFAULT_TLS_PORT 8089
72 #define DEFAULT_SESSION_LIMIT 100
73
74 /* See http.h for more information about the SSL implementation */
75 #if defined(HAVE_OPENSSL) && (defined(HAVE_FUNOPEN) || defined(HAVE_FOPENCOOKIE))
76 #define DO_SSL  /* comment in/out if you want to support ssl */
77 #endif
78
79 static int session_limit = DEFAULT_SESSION_LIMIT;
80 static int session_count = 0;
81
82 static struct ast_tls_config http_tls_cfg;
83
84 static void *httpd_helper_thread(void *arg);
85
86 /*!
87  * we have up to two accepting threads, one for http, one for https
88  */
89 static struct ast_tcptls_session_args http_desc = {
90         .accept_fd = -1,
91         .master = AST_PTHREADT_NULL,
92         .tls_cfg = NULL,
93         .poll_timeout = -1,
94         .name = "http server",
95         .accept_fn = ast_tcptls_server_root,
96         .worker_fn = httpd_helper_thread,
97 };
98
99 static struct ast_tcptls_session_args https_desc = {
100         .accept_fd = -1,
101         .master = AST_PTHREADT_NULL,
102         .tls_cfg = &http_tls_cfg,
103         .poll_timeout = -1,
104         .name = "https server",
105         .accept_fn = ast_tcptls_server_root,
106         .worker_fn = httpd_helper_thread,
107 };
108
109 static AST_RWLIST_HEAD_STATIC(uris, ast_http_uri);      /*!< list of supported handlers */
110
111 /* all valid URIs must be prepended by the string in prefix. */
112 static char prefix[MAX_PREFIX];
113 static int enablestatic;
114
115 /*! \brief Limit the kinds of files we're willing to serve up */
116 static struct {
117         const char *ext;
118         const char *mtype;
119 } mimetypes[] = {
120         { "png", "image/png" },
121         { "xml", "text/xml" },
122         { "jpg", "image/jpeg" },
123         { "js", "application/x-javascript" },
124         { "wav", "audio/x-wav" },
125         { "mp3", "audio/mpeg" },
126         { "svg", "image/svg+xml" },
127         { "svgz", "image/svg+xml" },
128         { "gif", "image/gif" },
129         { "html", "text/html" },
130         { "htm", "text/html" },
131         { "css", "text/css" },
132         { "cnf", "text/plain" },
133         { "cfg", "text/plain" },
134         { "bin", "application/octet-stream" },
135         { "sbn", "application/octet-stream" },
136         { "ld", "application/octet-stream" },
137 };
138
139 struct http_uri_redirect {
140         AST_LIST_ENTRY(http_uri_redirect) entry;
141         char *dest;
142         char target[0];
143 };
144
145 static AST_RWLIST_HEAD_STATIC(uri_redirects, http_uri_redirect);
146
147 static const struct ast_cfhttp_methods_text {
148         enum ast_http_method method;
149         const char *text;
150 } ast_http_methods_text[] = {
151         { AST_HTTP_UNKNOWN,     "UNKNOWN" },
152         { AST_HTTP_GET,         "GET" },
153         { AST_HTTP_POST,        "POST" },
154         { AST_HTTP_HEAD,        "HEAD" },
155         { AST_HTTP_PUT,         "PUT" },
156         { AST_HTTP_DELETE,      "DELETE" },
157         { AST_HTTP_OPTIONS,     "OPTIONS" },
158 };
159
160 const char *ast_get_http_method(enum ast_http_method method)
161 {
162         int x;
163
164         for (x = 0; x < ARRAY_LEN(ast_http_methods_text); x++) {
165                 if (ast_http_methods_text[x].method == method) {
166                         return ast_http_methods_text[x].text;
167                 }
168         }
169
170         return NULL;
171 }
172
173 const char *ast_http_ftype2mtype(const char *ftype)
174 {
175         int x;
176
177         if (ftype) {
178                 for (x = 0; x < ARRAY_LEN(mimetypes); x++) {
179                         if (!strcasecmp(ftype, mimetypes[x].ext)) {
180                                 return mimetypes[x].mtype;
181                         }
182                 }
183         }
184         return NULL;
185 }
186
187 uint32_t ast_http_manid_from_vars(struct ast_variable *headers)
188 {
189         uint32_t mngid = 0;
190         struct ast_variable *v, *cookies;
191
192         cookies = ast_http_get_cookies(headers);
193         for (v = cookies; v; v = v->next) {
194                 if (!strcasecmp(v->name, "mansession_id")) {
195                         sscanf(v->value, "%30x", &mngid);
196                         break;
197                 }
198         }
199         if (cookies) {
200                 ast_variables_destroy(cookies);
201         }
202         return mngid;
203 }
204
205 void ast_http_prefix(char *buf, int len)
206 {
207         if (buf) {
208                 ast_copy_string(buf, prefix, len);
209         }
210 }
211
212 static int static_callback(struct ast_tcptls_session_instance *ser,
213         const struct ast_http_uri *urih, const char *uri,
214         enum ast_http_method method, struct ast_variable *get_vars,
215         struct ast_variable *headers)
216 {
217         char *path;
218         const char *ftype;
219         const char *mtype;
220         char wkspace[80];
221         struct stat st;
222         int len;
223         int fd;
224         struct ast_str *http_header;
225         struct timeval tv;
226         struct ast_tm tm;
227         char timebuf[80], etag[23];
228         struct ast_variable *v;
229         int not_modified = 0;
230
231         if (method != AST_HTTP_GET && method != AST_HTTP_HEAD) {
232                 ast_http_error(ser, 501, "Not Implemented", "Attempt to use unimplemented / unsupported method");
233                 return -1;
234         }
235
236         /* Yuck.  I'm not really sold on this, but if you don't deliver static content it makes your configuration
237            substantially more challenging, but this seems like a rather irritating feature creep on Asterisk. */
238         if (!enablestatic || ast_strlen_zero(uri)) {
239                 goto out403;
240         }
241
242         /* Disallow any funny filenames at all (checking first character only??) */
243         if ((uri[0] < 33) || strchr("./|~@#$%^&*() \t", uri[0])) {
244                 goto out403;
245         }
246
247         if (strstr(uri, "/..")) {
248                 goto out403;
249         }
250
251         if ((ftype = strrchr(uri, '.'))) {
252                 ftype++;
253         }
254
255         if (!(mtype = ast_http_ftype2mtype(ftype))) {
256                 snprintf(wkspace, sizeof(wkspace), "text/%s", S_OR(ftype, "plain"));
257                 mtype = wkspace;
258         }
259
260         /* Cap maximum length */
261         if ((len = strlen(uri) + strlen(ast_config_AST_DATA_DIR) + strlen("/static-http/") + 5) > 1024) {
262                 goto out403;
263         }
264
265         path = ast_alloca(len);
266         sprintf(path, "%s/static-http/%s", ast_config_AST_DATA_DIR, uri);
267         if (stat(path, &st)) {
268                 goto out404;
269         }
270
271         if (S_ISDIR(st.st_mode)) {
272                 goto out404;
273         }
274
275         if (strstr(path, "/private/") && !astman_is_authed(ast_http_manid_from_vars(headers))) {
276                 goto out403;
277         }
278
279         fd = open(path, O_RDONLY);
280         if (fd < 0) {
281                 goto out403;
282         }
283
284         /* make "Etag:" http header value */
285         snprintf(etag, sizeof(etag), "\"%ld\"", (long)st.st_mtime);
286
287         /* make "Last-Modified:" http header value */
288         tv.tv_sec = st.st_mtime;
289         tv.tv_usec = 0;
290         ast_strftime(timebuf, sizeof(timebuf), "%a, %d %b %Y %H:%M:%S GMT", ast_localtime(&tv, &tm, "GMT"));
291
292         /* check received "If-None-Match" request header and Etag value for file */
293         for (v = headers; v; v = v->next) {
294                 if (!strcasecmp(v->name, "If-None-Match")) {
295                         if (!strcasecmp(v->value, etag)) {
296                                 not_modified = 1;
297                         }
298                         break;
299                 }
300         }
301
302         if ( (http_header = ast_str_create(255)) == NULL) {
303                 close(fd);
304                 return -1;
305         }
306
307         ast_str_set(&http_header, 0, "Content-type: %s\r\n"
308                 "ETag: %s\r\n"
309                 "Last-Modified: %s\r\n",
310                 mtype,
311                 etag,
312                 timebuf);
313
314         /* ast_http_send() frees http_header, so we don't need to do it before returning */
315         if (not_modified) {
316                 ast_http_send(ser, method, 304, "Not Modified", http_header, NULL, 0, 1);
317         } else {
318                 ast_http_send(ser, method, 200, NULL, http_header, NULL, fd, 1); /* static content flag is set */
319         }
320         close(fd);
321         return 0;
322
323 out404:
324         ast_http_error(ser, 404, "Not Found", "The requested URL was not found on this server.");
325         return -1;
326
327 out403:
328         ast_http_error(ser, 403, "Access Denied", "You do not have permission to access the requested URL.");
329         return -1;
330 }
331
332 static int httpstatus_callback(struct ast_tcptls_session_instance *ser,
333         const struct ast_http_uri *urih, const char *uri,
334         enum ast_http_method method, struct ast_variable *get_vars,
335         struct ast_variable *headers)
336 {
337         struct ast_str *out;
338         struct ast_variable *v, *cookies = NULL;
339
340         if (method != AST_HTTP_GET && method != AST_HTTP_HEAD) {
341                 ast_http_error(ser, 501, "Not Implemented", "Attempt to use unimplemented / unsupported method");
342                 return -1;
343         }
344
345         if ( (out = ast_str_create(512)) == NULL) {
346                 return -1;
347         }
348
349         ast_str_append(&out, 0,
350                 "<title>Asterisk HTTP Status</title>\r\n"
351                 "<body bgcolor=\"#ffffff\">\r\n"
352                 "<table bgcolor=\"#f1f1f1\" align=\"center\"><tr><td bgcolor=\"#e0e0ff\" colspan=\"2\" width=\"500\">\r\n"
353                 "<h2>&nbsp;&nbsp;Asterisk&trade; HTTP Status</h2></td></tr>\r\n");
354
355         ast_str_append(&out, 0, "<tr><td><i>Prefix</i></td><td><b>%s</b></td></tr>\r\n", prefix);
356         ast_str_append(&out, 0, "<tr><td><i>Bind Address</i></td><td><b>%s</b></td></tr>\r\n",
357                        ast_sockaddr_stringify_addr(&http_desc.old_address));
358         ast_str_append(&out, 0, "<tr><td><i>Bind Port</i></td><td><b>%s</b></td></tr>\r\n",
359                        ast_sockaddr_stringify_port(&http_desc.old_address));
360         if (http_tls_cfg.enabled) {
361                 ast_str_append(&out, 0, "<tr><td><i>SSL Bind Port</i></td><td><b>%s</b></td></tr>\r\n",
362                                ast_sockaddr_stringify_port(&https_desc.old_address));
363         }
364         ast_str_append(&out, 0, "<tr><td colspan=\"2\"><hr></td></tr>\r\n");
365         for (v = get_vars; v; v = v->next) {
366                 ast_str_append(&out, 0, "<tr><td><i>Submitted GET Variable '%s'</i></td><td>%s</td></tr>\r\n", v->name, v->value);
367         }
368         ast_str_append(&out, 0, "<tr><td colspan=\"2\"><hr></td></tr>\r\n");
369
370         cookies = ast_http_get_cookies(headers);
371         for (v = cookies; v; v = v->next) {
372                 ast_str_append(&out, 0, "<tr><td><i>Cookie '%s'</i></td><td>%s</td></tr>\r\n", v->name, v->value);
373         }
374         ast_variables_destroy(cookies);
375
376         ast_str_append(&out, 0, "</table><center><font size=\"-1\"><i>Asterisk and Digium are registered trademarks of Digium, Inc.</i></font></center></body>\r\n");
377         ast_http_send(ser, method, 200, NULL, NULL, out, 0, 0);
378         return 0;
379 }
380
381 static struct ast_http_uri statusuri = {
382         .callback = httpstatus_callback,
383         .description = "Asterisk HTTP General Status",
384         .uri = "httpstatus",
385         .has_subtree = 0,
386         .data = NULL,
387         .key = __FILE__,
388 };
389
390 static struct ast_http_uri staticuri = {
391         .callback = static_callback,
392         .description = "Asterisk HTTP Static Delivery",
393         .uri = "static",
394         .has_subtree = 1,
395         .data = NULL,
396         .key= __FILE__,
397 };
398
399
400 /* send http/1.1 response */
401 /* free content variable and close socket*/
402 void ast_http_send(struct ast_tcptls_session_instance *ser,
403         enum ast_http_method method, int status_code, const char *status_title,
404         struct ast_str *http_header, struct ast_str *out, const int fd,
405         unsigned int static_content)
406 {
407         struct timeval now = ast_tvnow();
408         struct ast_tm tm;
409         char timebuf[80];
410         int content_length = 0;
411
412         if (!ser || 0 == ser->f) {
413                 return;
414         }
415
416         ast_strftime(timebuf, sizeof(timebuf), "%a, %d %b %Y %H:%M:%S GMT", ast_localtime(&now, &tm, "GMT"));
417
418         /* calc content length */
419         if (out) {
420                 content_length += strlen(ast_str_buffer(out));
421         }
422
423         if (fd) {
424                 content_length += lseek(fd, 0, SEEK_END);
425                 lseek(fd, 0, SEEK_SET);
426         }
427
428         /* send http header */
429         fprintf(ser->f, "HTTP/1.1 %d %s\r\n"
430                 "Server: Asterisk/%s\r\n"
431                 "Date: %s\r\n"
432                 "Connection: close\r\n"
433                 "%s"
434                 "Content-Length: %d\r\n"
435                 "%s"
436                 "\r\n",
437                 status_code, status_title ? status_title : "OK",
438                 ast_get_version(),
439                 timebuf,
440                 static_content ? "" : "Cache-Control: no-cache, no-store\r\n",
441                 content_length,
442                 http_header ? ast_str_buffer(http_header) : ""
443                 );
444
445         /* send content */
446         if (method != AST_HTTP_HEAD || status_code >= 400) {
447                 if (out) {
448                         fprintf(ser->f, "%s", ast_str_buffer(out));
449                 }
450
451                 if (fd) {
452                         char buf[256];
453                         int len;
454                         while ((len = read(fd, buf, sizeof(buf))) > 0) {
455                                 if (fwrite(buf, len, 1, ser->f) != 1) {
456                                         ast_log(LOG_WARNING, "fwrite() failed: %s\n", strerror(errno));
457                                         break;
458                                 }
459                         }
460                 }
461         }
462
463         if (http_header) {
464                 ast_free(http_header);
465         }
466         if (out) {
467                 ast_free(out);
468         }
469
470         fclose(ser->f);
471         ser->f = 0;
472         return;
473 }
474
475 /* Send http "401 Unauthorized" responce and close socket*/
476 void ast_http_auth(struct ast_tcptls_session_instance *ser, const char *realm,
477         const unsigned long nonce, const unsigned long opaque, int stale,
478         const char *text)
479 {
480         struct ast_str *http_headers = ast_str_create(128);
481         struct ast_str *out = ast_str_create(512);
482
483         if (!http_headers || !out) {
484                 ast_free(http_headers);
485                 ast_free(out);
486                 return;
487         }
488
489         ast_str_set(&http_headers, 0,
490                 "WWW-authenticate: Digest algorithm=MD5, realm=\"%s\", nonce=\"%08lx\", qop=\"auth\", opaque=\"%08lx\"%s\r\n"
491                 "Content-type: text/html\r\n",
492                 realm ? realm : "Asterisk",
493                 nonce,
494                 opaque,
495                 stale ? ", stale=true" : "");
496
497         ast_str_set(&out, 0,
498                 "<!DOCTYPE HTML PUBLIC \"-//IETF//DTD HTML 2.0//EN\">\r\n"
499                 "<html><head>\r\n"
500                 "<title>401 Unauthorized</title>\r\n"
501                 "</head><body>\r\n"
502                 "<h1>401 Unauthorized</h1>\r\n"
503                 "<p>%s</p>\r\n"
504                 "<hr />\r\n"
505                 "<address>Asterisk Server</address>\r\n"
506                 "</body></html>\r\n",
507                 text ? text : "");
508
509         ast_http_send(ser, AST_HTTP_UNKNOWN, 401, "Unauthorized", http_headers, out, 0, 0);
510         return;
511 }
512
513 /* send http error response and close socket*/
514 void ast_http_error(struct ast_tcptls_session_instance *ser, int status_code, const char *status_title, const char *text)
515 {
516         struct ast_str *http_headers = ast_str_create(40);
517         struct ast_str *out = ast_str_create(256);
518
519         if (!http_headers || !out) {
520                 ast_free(http_headers);
521                 ast_free(out);
522                 return;
523         }
524
525         ast_str_set(&http_headers, 0, "Content-type: text/html\r\n");
526
527         ast_str_set(&out, 0,
528                 "<!DOCTYPE HTML PUBLIC \"-//IETF//DTD HTML 2.0//EN\">\r\n"
529                 "<html><head>\r\n"
530                 "<title>%d %s</title>\r\n"
531                 "</head><body>\r\n"
532                 "<h1>%s</h1>\r\n"
533                 "<p>%s</p>\r\n"
534                 "<hr />\r\n"
535                 "<address>Asterisk Server</address>\r\n"
536                 "</body></html>\r\n",
537                         status_code, status_title, status_title, text);
538
539         ast_http_send(ser, AST_HTTP_UNKNOWN, status_code, status_title, http_headers, out, 0, 0);
540         return;
541 }
542
543 /*! \brief
544  * Link the new uri into the list.
545  *
546  * They are sorted by length of
547  * the string, not alphabetically. Duplicate entries are not replaced,
548  * but the insertion order (using <= and not just <) makes sure that
549  * more recent insertions hide older ones.
550  * On a lookup, we just scan the list and stop at the first matching entry.
551  */
552 int ast_http_uri_link(struct ast_http_uri *urih)
553 {
554         struct ast_http_uri *uri;
555         int len = strlen(urih->uri);
556
557         AST_RWLIST_WRLOCK(&uris);
558
559         if ( AST_RWLIST_EMPTY(&uris) || strlen(AST_RWLIST_FIRST(&uris)->uri) <= len ) {
560                 AST_RWLIST_INSERT_HEAD(&uris, urih, entry);
561                 AST_RWLIST_UNLOCK(&uris);
562                 return 0;
563         }
564
565         AST_RWLIST_TRAVERSE(&uris, uri, entry) {
566                 if (AST_RWLIST_NEXT(uri, entry) &&
567                         strlen(AST_RWLIST_NEXT(uri, entry)->uri) <= len) {
568                         AST_RWLIST_INSERT_AFTER(&uris, uri, urih, entry);
569                         AST_RWLIST_UNLOCK(&uris);
570
571                         return 0;
572                 }
573         }
574
575         AST_RWLIST_INSERT_TAIL(&uris, urih, entry);
576
577         AST_RWLIST_UNLOCK(&uris);
578
579         return 0;
580 }
581
582 void ast_http_uri_unlink(struct ast_http_uri *urih)
583 {
584         AST_RWLIST_WRLOCK(&uris);
585         AST_RWLIST_REMOVE(&uris, urih, entry);
586         AST_RWLIST_UNLOCK(&uris);
587 }
588
589 void ast_http_uri_unlink_all_with_key(const char *key)
590 {
591         struct ast_http_uri *urih;
592         AST_RWLIST_WRLOCK(&uris);
593         AST_RWLIST_TRAVERSE_SAFE_BEGIN(&uris, urih, entry) {
594                 if (!strcmp(urih->key, key)) {
595                         AST_RWLIST_REMOVE_CURRENT(entry);
596                         if (urih->dmallocd) {
597                                 ast_free(urih->data);
598                         }
599                         if (urih->mallocd) {
600                                 ast_free(urih);
601                         }
602                 }
603         }
604         AST_RWLIST_TRAVERSE_SAFE_END;
605         AST_RWLIST_UNLOCK(&uris);
606 }
607
608 #define MAX_POST_CONTENT 1025
609
610 /*
611  * get post variables from client Request Entity-Body, if content type is
612  * application/x-www-form-urlencoded
613  */
614 struct ast_variable *ast_http_get_post_vars(
615         struct ast_tcptls_session_instance *ser, struct ast_variable *headers)
616 {
617         int content_length = 0;
618         struct ast_variable *v, *post_vars=NULL, *prev = NULL;
619         char *buf, *var, *val;
620         int res;
621
622         for (v = headers; v; v = v->next) {
623                 if (!strcasecmp(v->name, "Content-Type")) {
624                         if (strcasecmp(v->value, "application/x-www-form-urlencoded")) {
625                                 return NULL;
626                         }
627                         break;
628                 }
629         }
630
631         for (v = headers; v; v = v->next) {
632                 if (!strcasecmp(v->name, "Content-Length")) {
633                         content_length = atoi(v->value);
634                         break;
635                 }
636         }
637
638         if (content_length <= 0) {
639                 return NULL;
640         }
641
642         if (content_length > MAX_POST_CONTENT - 1) {
643                 ast_log(LOG_WARNING, "Excessively long HTTP content. %d is greater than our max of %d\n",
644                                 content_length, MAX_POST_CONTENT);
645                 ast_http_send(ser, AST_HTTP_POST, 413, "Request Entity Too Large", NULL, NULL, 0, 0);
646                 return NULL;
647         }
648
649         buf = ast_malloc(content_length + 1);
650         if (!buf) {
651                 return NULL;
652         }
653
654         res = fread(buf, 1, content_length, ser->f);
655         if (res < content_length) {
656                 /* Error, distinguishable by ferror() or feof(), but neither
657                  * is good. */
658                 goto done;
659         }
660         buf[content_length] = '\0';
661
662         while ((val = strsep(&buf, "&"))) {
663                 var = strsep(&val, "=");
664                 if (val) {
665                         ast_uri_decode(val, ast_uri_http_legacy);
666                 } else  {
667                         val = "";
668                 }
669                 ast_uri_decode(var, ast_uri_http_legacy);
670                 if ((v = ast_variable_new(var, val, ""))) {
671                         if (post_vars) {
672                                 prev->next = v;
673                         } else {
674                                 post_vars = v;
675                         }
676                         prev = v;
677                 }
678         }
679         
680 done:
681         ast_free(buf);
682         return post_vars;
683 }
684
685 static int handle_uri(struct ast_tcptls_session_instance *ser, char *uri,
686         enum ast_http_method method, struct ast_variable *headers)
687 {
688         char *c;
689         int res = -1;
690         char *params = uri;
691         struct ast_http_uri *urih = NULL;
692         int l;
693         struct ast_variable *get_vars = NULL, *v, *prev = NULL;
694         struct http_uri_redirect *redirect;
695
696         ast_debug(2, "HTTP Request URI is %s \n", uri);
697
698         strsep(&params, "?");
699         /* Extract arguments from the request and store them in variables. */
700         if (params) {
701                 char *var, *val;
702
703                 while ((val = strsep(&params, "&"))) {
704                         var = strsep(&val, "=");
705                         if (val) {
706                                 ast_uri_decode(val, ast_uri_http_legacy);
707                         } else  {
708                                 val = "";
709                         }
710                         ast_uri_decode(var, ast_uri_http_legacy);
711                         if ((v = ast_variable_new(var, val, ""))) {
712                                 if (get_vars) {
713                                         prev->next = v;
714                                 } else {
715                                         get_vars = v;
716                                 }
717                                 prev = v;
718                         }
719                 }
720         }
721
722         AST_RWLIST_RDLOCK(&uri_redirects);
723         AST_RWLIST_TRAVERSE(&uri_redirects, redirect, entry) {
724                 if (!strcasecmp(uri, redirect->target)) {
725                         struct ast_str *http_header = ast_str_create(128);
726                         ast_str_set(&http_header, 0, "Location: %s\r\n", redirect->dest);
727                         ast_http_send(ser, method, 302, "Moved Temporarily", http_header, NULL, 0, 0);
728
729                         break;
730                 }
731         }
732         AST_RWLIST_UNLOCK(&uri_redirects);
733         if (redirect) {
734                 goto cleanup;
735         }
736
737         /* We want requests to start with the (optional) prefix and '/' */
738         l = strlen(prefix);
739         if (!strncasecmp(uri, prefix, l) && uri[l] == '/') {
740                 uri += l + 1;
741                 /* scan registered uris to see if we match one. */
742                 AST_RWLIST_RDLOCK(&uris);
743                 AST_RWLIST_TRAVERSE(&uris, urih, entry) {
744                         ast_debug(2, "match request [%s] with handler [%s] len %d\n", uri, urih->uri, l);
745                         l = strlen(urih->uri);
746                         c = uri + l;    /* candidate */
747                         if (strncasecmp(urih->uri, uri, l) /* no match */
748                             || (*c && *c != '/')) { /* substring */
749                                 continue;
750                         }
751                         if (*c == '/') {
752                                 c++;
753                         }
754                         if (!*c || urih->has_subtree) {
755                                 uri = c;
756                                 break;
757                         }
758                 }
759                 AST_RWLIST_UNLOCK(&uris);
760         }
761         if (urih) {
762                 if (!urih->no_decode_uri) {
763                         ast_uri_decode(uri, ast_uri_http_legacy);
764                 }
765                 res = urih->callback(ser, urih, uri, method, get_vars, headers);
766         } else {
767                 ast_http_error(ser, 404, "Not Found", "The requested URL was not found on this server.");
768         }
769
770 cleanup:
771         ast_variables_destroy(get_vars);
772         return res;
773 }
774
775 #ifdef DO_SSL
776 #if defined(HAVE_FUNOPEN)
777 #define HOOK_T int
778 #define LEN_T int
779 #else
780 #define HOOK_T ssize_t
781 #define LEN_T size_t
782 #endif
783
784 /*!
785  * replacement read/write functions for SSL support.
786  * We use wrappers rather than SSL_read/SSL_write directly so
787  * we can put in some debugging.
788  */
789 /*static HOOK_T ssl_read(void *cookie, char *buf, LEN_T len)
790 {
791         int i = SSL_read(cookie, buf, len-1);
792 #if 0
793         if (i >= 0)
794                 buf[i] = '\0';
795         ast_verbose("ssl read size %d returns %d <%s>\n", (int)len, i, buf);
796 #endif
797         return i;
798 }
799
800 static HOOK_T ssl_write(void *cookie, const char *buf, LEN_T len)
801 {
802 #if 0
803         char *s = ast_alloca(len+1);
804         strncpy(s, buf, len);
805         s[len] = '\0';
806         ast_verbose("ssl write size %d <%s>\n", (int)len, s);
807 #endif
808         return SSL_write(cookie, buf, len);
809 }
810
811 static int ssl_close(void *cookie)
812 {
813         close(SSL_get_fd(cookie));
814         SSL_shutdown(cookie);
815         SSL_free(cookie);
816         return 0;
817 }*/
818 #endif  /* DO_SSL */
819
820 static struct ast_variable *parse_cookies(char *cookies)
821 {
822         char *cur;
823         struct ast_variable *vars = NULL, *var;
824
825         while ((cur = strsep(&cookies, ";"))) {
826                 char *name, *val;
827
828                 name = val = cur;
829                 strsep(&val, "=");
830
831                 if (ast_strlen_zero(name) || ast_strlen_zero(val)) {
832                         continue;
833                 }
834
835                 name = ast_strip(name);
836                 val = ast_strip_quoted(val, "\"", "\"");
837
838                 if (ast_strlen_zero(name) || ast_strlen_zero(val)) {
839                         continue;
840                 }
841
842                 ast_debug(1, "HTTP Cookie, Name: '%s'  Value: '%s'\n", name, val);
843
844                 var = ast_variable_new(name, val, __FILE__);
845                 var->next = vars;
846                 vars = var;
847         }
848
849         return vars;
850 }
851
852 /* get cookie from Request headers */
853 struct ast_variable *ast_http_get_cookies(struct ast_variable *headers)
854 {
855         struct ast_variable *v, *cookies=NULL;
856
857         for (v = headers; v; v = v->next) {
858                 if (!strncasecmp(v->name, "Cookie", 6)) {
859                         char *tmp = ast_strdupa(v->value);
860                         if (cookies) {
861                                 ast_variables_destroy(cookies);
862                         }
863
864                         cookies = parse_cookies(tmp);
865                 }
866         }
867         return cookies;
868 }
869
870 static struct ast_http_auth *auth_create(const char *userid,
871         const char *password)
872 {
873         RAII_VAR(struct ast_http_auth *, auth, NULL, ao2_cleanup);
874         size_t userid_len;
875         size_t password_len;
876
877         if (!userid || !password) {
878                 ast_log(LOG_ERROR, "Invalid userid/password\n");
879                 return NULL;
880         }
881
882         userid_len = strlen(userid) + 1;
883         password_len = strlen(password) + 1;
884
885         /* Allocate enough room to store everything in one memory block */
886         auth = ao2_alloc(sizeof(*auth) + userid_len + password_len, NULL);
887         if (!auth) {
888                 return NULL;
889         }
890
891         /* Put the userid right after the struct */
892         auth->userid = (char *)(auth + 1);
893         strcpy(auth->userid, userid);
894
895         /* Put the password right after the userid */
896         auth->password = auth->userid + userid_len;
897         strcpy(auth->password, password);
898
899         ao2_ref(auth, +1);
900         return auth;
901 }
902
903 #define BASIC_PREFIX "Basic "
904 #define BASIC_LEN 6 /*!< strlen(BASIC_PREFIX) */
905
906 struct ast_http_auth *ast_http_get_auth(struct ast_variable *headers)
907 {
908         struct ast_variable *v;
909
910         for (v = headers; v; v = v->next) {
911                 const char *base64;
912                 char decoded[256] = {};
913                 char *username;
914                 char *password;
915                 int cnt;
916
917                 if (strcasecmp("Authorization", v->name) != 0) {
918                         continue;
919                 }
920
921                 if (!ast_begins_with(v->value, BASIC_PREFIX)) {
922                         ast_log(LOG_DEBUG,
923                                 "Unsupported Authorization scheme\n");
924                         continue;
925                 }
926
927                 /* Basic auth header parsing. RFC 2617, section 2.
928                  *   credentials = "Basic" basic-credentials
929                  *   basic-credentials = base64-user-pass
930                  *   base64-user-pass  = <base64 encoding of user-pass,
931                  *                        except not limited to 76 char/line>
932                  *   user-pass   = userid ":" password
933                  */
934
935                 base64 = v->value + BASIC_LEN;
936
937                 /* This will truncate "userid:password" lines to
938                  * sizeof(decoded). The array is long enough that this shouldn't
939                  * be a problem */
940                 cnt = ast_base64decode((unsigned char*)decoded, base64,
941                         sizeof(decoded) - 1);
942                 ast_assert(cnt < sizeof(decoded));
943
944                 /* Split the string at the colon */
945                 password = decoded;
946                 username = strsep(&password, ":");
947                 if (!password) {
948                         ast_log(LOG_WARNING, "Invalid Authorization header\n");
949                         return NULL;
950                 }
951
952                 return auth_create(username, password);
953         }
954
955         return NULL;
956 }
957
958 static void *httpd_helper_thread(void *data)
959 {
960         char buf[4096];
961         char header_line[4096];
962         struct ast_tcptls_session_instance *ser = data;
963         struct ast_variable *headers = NULL;
964         struct ast_variable *tail = headers;
965         char *uri, *method;
966         enum ast_http_method http_method = AST_HTTP_UNKNOWN;
967
968         if (ast_atomic_fetchadd_int(&session_count, +1) >= session_limit) {
969                 goto done;
970         }
971
972         if (!fgets(buf, sizeof(buf), ser->f)) {
973                 goto done;
974         }
975
976         /* Get method */
977         method = ast_skip_blanks(buf);
978         uri = ast_skip_nonblanks(method);
979         if (*uri) {
980                 *uri++ = '\0';
981         }
982
983         if (!strcasecmp(method,"GET")) {
984                 http_method = AST_HTTP_GET;
985         } else if (!strcasecmp(method,"POST")) {
986                 http_method = AST_HTTP_POST;
987         } else if (!strcasecmp(method,"HEAD")) {
988                 http_method = AST_HTTP_HEAD;
989         } else if (!strcasecmp(method,"PUT")) {
990                 http_method = AST_HTTP_PUT;
991         } else if (!strcasecmp(method,"DELETE")) {
992                 http_method = AST_HTTP_DELETE;
993         } else if (!strcasecmp(method,"OPTIONS")) {
994                 http_method = AST_HTTP_OPTIONS;
995         }
996
997         uri = ast_skip_blanks(uri);     /* Skip white space */
998
999         if (*uri) {                     /* terminate at the first blank */
1000                 char *c = ast_skip_nonblanks(uri);
1001
1002                 if (*c) {
1003                         *c = '\0';
1004                 }
1005         }
1006
1007         /* process "Request Headers" lines */
1008         while (fgets(header_line, sizeof(header_line), ser->f)) {
1009                 char *name, *value;
1010
1011                 /* Trim trailing characters */
1012                 ast_trim_blanks(header_line);
1013                 if (ast_strlen_zero(header_line)) {
1014                         break;
1015                 }
1016
1017                 value = header_line;
1018                 name = strsep(&value, ":");
1019                 if (!value) {
1020                         continue;
1021                 }
1022
1023                 value = ast_skip_blanks(value);
1024                 if (ast_strlen_zero(value) || ast_strlen_zero(name)) {
1025                         continue;
1026                 }
1027
1028                 ast_trim_blanks(name);
1029
1030                 if (!headers) {
1031                         headers = ast_variable_new(name, value, __FILE__);
1032                         tail = headers;
1033                 } else {
1034                         tail->next = ast_variable_new(name, value, __FILE__);
1035                         tail = tail->next;
1036                 }
1037         }
1038
1039         if (!*uri) {
1040                 ast_http_error(ser, 400, "Bad Request", "Invalid Request");
1041                 goto done;
1042         }
1043
1044         handle_uri(ser, uri, http_method, headers);
1045
1046 done:
1047         ast_atomic_fetchadd_int(&session_count, -1);
1048
1049         /* clean up all the header information */
1050         if (headers) {
1051                 ast_variables_destroy(headers);
1052         }
1053
1054         if (ser->f) {
1055                 fclose(ser->f);
1056         }
1057         ao2_ref(ser, -1);
1058         ser = NULL;
1059         return NULL;
1060 }
1061
1062 /*!
1063  * \brief Add a new URI redirect
1064  * The entries in the redirect list are sorted by length, just like the list
1065  * of URI handlers.
1066  */
1067 static void add_redirect(const char *value)
1068 {
1069         char *target, *dest;
1070         struct http_uri_redirect *redirect, *cur;
1071         unsigned int target_len;
1072         unsigned int total_len;
1073
1074         dest = ast_strdupa(value);
1075         dest = ast_skip_blanks(dest);
1076         target = strsep(&dest, " ");
1077         target = ast_skip_blanks(target);
1078         target = strsep(&target, " "); /* trim trailing whitespace */
1079
1080         if (!dest) {
1081                 ast_log(LOG_WARNING, "Invalid redirect '%s'\n", value);
1082                 return;
1083         }
1084
1085         target_len = strlen(target) + 1;
1086         total_len = sizeof(*redirect) + target_len + strlen(dest) + 1;
1087
1088         if (!(redirect = ast_calloc(1, total_len))) {
1089                 return;
1090         }
1091         redirect->dest = redirect->target + target_len;
1092         strcpy(redirect->target, target);
1093         strcpy(redirect->dest, dest);
1094
1095         AST_RWLIST_WRLOCK(&uri_redirects);
1096
1097         target_len--; /* So we can compare directly with strlen() */
1098         if (AST_RWLIST_EMPTY(&uri_redirects)
1099                 || strlen(AST_RWLIST_FIRST(&uri_redirects)->target) <= target_len ) {
1100                 AST_RWLIST_INSERT_HEAD(&uri_redirects, redirect, entry);
1101                 AST_RWLIST_UNLOCK(&uri_redirects);
1102
1103                 return;
1104         }
1105
1106         AST_RWLIST_TRAVERSE(&uri_redirects, cur, entry) {
1107                 if (AST_RWLIST_NEXT(cur, entry)
1108                         && strlen(AST_RWLIST_NEXT(cur, entry)->target) <= target_len ) {
1109                         AST_RWLIST_INSERT_AFTER(&uri_redirects, cur, redirect, entry);
1110                         AST_RWLIST_UNLOCK(&uri_redirects);
1111                         return;
1112                 }
1113         }
1114
1115         AST_RWLIST_INSERT_TAIL(&uri_redirects, redirect, entry);
1116
1117         AST_RWLIST_UNLOCK(&uri_redirects);
1118 }
1119
1120 static int __ast_http_load(int reload)
1121 {
1122         struct ast_config *cfg;
1123         struct ast_variable *v;
1124         int enabled=0;
1125         int newenablestatic=0;
1126         char newprefix[MAX_PREFIX] = "";
1127         struct http_uri_redirect *redirect;
1128         struct ast_flags config_flags = { reload ? CONFIG_FLAG_FILEUNCHANGED : 0 };
1129         uint32_t bindport = DEFAULT_PORT;
1130         RAII_VAR(struct ast_sockaddr *, addrs, NULL, ast_free);
1131         int num_addrs = 0;
1132         int http_tls_was_enabled = 0;
1133
1134         cfg = ast_config_load2("http.conf", "http", config_flags);
1135         if (cfg == CONFIG_STATUS_FILEMISSING || cfg == CONFIG_STATUS_FILEUNCHANGED || cfg == CONFIG_STATUS_FILEINVALID) {
1136                 return 0;
1137         }
1138
1139         http_tls_was_enabled = (reload && http_tls_cfg.enabled);
1140
1141         http_tls_cfg.enabled = 0;
1142         if (http_tls_cfg.certfile) {
1143                 ast_free(http_tls_cfg.certfile);
1144         }
1145         http_tls_cfg.certfile = ast_strdup(AST_CERTFILE);
1146
1147         if (http_tls_cfg.pvtfile) {
1148                 ast_free(http_tls_cfg.pvtfile);
1149         }
1150         http_tls_cfg.pvtfile = ast_strdup("");
1151
1152         if (http_tls_cfg.cipher) {
1153                 ast_free(http_tls_cfg.cipher);
1154         }
1155         http_tls_cfg.cipher = ast_strdup("");
1156
1157         AST_RWLIST_WRLOCK(&uri_redirects);
1158         while ((redirect = AST_RWLIST_REMOVE_HEAD(&uri_redirects, entry))) {
1159                 ast_free(redirect);
1160         }
1161         AST_RWLIST_UNLOCK(&uri_redirects);
1162
1163         ast_sockaddr_setnull(&https_desc.local_address);
1164
1165         if (cfg) {
1166                 v = ast_variable_browse(cfg, "general");
1167                 for (; v; v = v->next) {
1168
1169                         /* read tls config options while preventing unsupported options from being set */
1170                         if (strcasecmp(v->name, "tlscafile")
1171                                 && strcasecmp(v->name, "tlscapath")
1172                                 && strcasecmp(v->name, "tlscadir")
1173                                 && strcasecmp(v->name, "tlsverifyclient")
1174                                 && strcasecmp(v->name, "tlsdontverifyserver")
1175                                 && strcasecmp(v->name, "tlsclientmethod")
1176                                 && strcasecmp(v->name, "sslclientmethod")
1177                                 && strcasecmp(v->name, "tlscipher")
1178                                 && strcasecmp(v->name, "sslcipher")
1179                                 && !ast_tls_read_conf(&http_tls_cfg, &https_desc, v->name, v->value)) {
1180                                 continue;
1181                         }
1182
1183                         if (!strcasecmp(v->name, "enabled")) {
1184                                 enabled = ast_true(v->value);
1185                         } else if (!strcasecmp(v->name, "enablestatic")) {
1186                                 newenablestatic = ast_true(v->value);
1187                         } else if (!strcasecmp(v->name, "bindport")) {
1188                                 if (ast_parse_arg(v->value, PARSE_UINT32 | PARSE_IN_RANGE | PARSE_DEFAULT, &bindport, DEFAULT_PORT, 0, 65535)) {
1189                                         ast_log(LOG_WARNING, "Invalid port %s specified. Using default port %"PRId32, v->value, DEFAULT_PORT);
1190                                 }
1191                         } else if (!strcasecmp(v->name, "bindaddr")) {
1192                                 if (!(num_addrs = ast_sockaddr_resolve(&addrs, v->value, 0, AST_AF_UNSPEC))) {
1193                                         ast_log(LOG_WARNING, "Invalid bind address %s\n", v->value);
1194                                 }
1195                         } else if (!strcasecmp(v->name, "prefix")) {
1196                                 if (!ast_strlen_zero(v->value)) {
1197                                         newprefix[0] = '/';
1198                                         ast_copy_string(newprefix + 1, v->value, sizeof(newprefix) - 1);
1199                                 } else {
1200                                         newprefix[0] = '\0';
1201                                 }
1202                         } else if (!strcasecmp(v->name, "redirect")) {
1203                                 add_redirect(v->value);
1204                         } else if (!strcasecmp(v->name, "sessionlimit")) {
1205                                 if (ast_parse_arg(v->value, PARSE_INT32|PARSE_DEFAULT|PARSE_IN_RANGE,
1206                                                         &session_limit, DEFAULT_SESSION_LIMIT, 1, INT_MAX)) {
1207                                         ast_log(LOG_WARNING, "Invalid %s '%s' at line %d of http.conf\n",
1208                                                         v->name, v->value, v->lineno);
1209                                 }
1210                         } else {
1211                                 ast_log(LOG_WARNING, "Ignoring unknown option '%s' in http.conf\n", v->name);
1212                         }
1213                 }
1214
1215                 ast_config_destroy(cfg);
1216         }
1217
1218         if (strcmp(prefix, newprefix)) {
1219                 ast_copy_string(prefix, newprefix, sizeof(prefix));
1220         }
1221         enablestatic = newenablestatic;
1222
1223         if (num_addrs && enabled) {
1224                 int i;
1225                 for (i = 0; i < num_addrs; ++i) {
1226                         ast_sockaddr_copy(&http_desc.local_address, &addrs[i]);
1227                         if (!ast_sockaddr_port(&http_desc.local_address)) {
1228                                 ast_sockaddr_set_port(&http_desc.local_address, bindport);
1229                         }
1230                         ast_tcptls_server_start(&http_desc);
1231                         if (http_desc.accept_fd == -1) {
1232                                 ast_log(LOG_WARNING, "Failed to start HTTP server for address %s\n", ast_sockaddr_stringify(&addrs[i]));
1233                                 ast_sockaddr_setnull(&http_desc.local_address);
1234                         } else {
1235                                 ast_verb(1, "Bound HTTP server to address %s\n", ast_sockaddr_stringify(&addrs[i]));
1236                                 break;
1237                         }
1238                 }
1239                 /* When no specific TLS bindaddr is specified, we just use
1240                  * the non-TLS bindaddress here.
1241                  */
1242                 if (ast_sockaddr_isnull(&https_desc.local_address) && http_desc.accept_fd != -1) {
1243                         ast_sockaddr_copy(&https_desc.local_address, &https_desc.local_address);
1244                         /* Of course, we can't use the same port though.
1245                          * Since no bind address was specified, we just use the
1246                          * default TLS port
1247                          */
1248                         ast_sockaddr_set_port(&https_desc.local_address, DEFAULT_TLS_PORT);
1249                 }
1250         }
1251         if (http_tls_was_enabled && !http_tls_cfg.enabled) {
1252                 ast_tcptls_server_stop(&https_desc);
1253         } else if (http_tls_cfg.enabled && !ast_sockaddr_isnull(&https_desc.local_address)) {
1254                 /* We can get here either because a TLS-specific address was specified
1255                  * or because we copied the non-TLS address here. In the case where
1256                  * we read an explicit address from the config, there may have been
1257                  * no port specified, so we'll just use the default TLS port.
1258                  */
1259                 if (!ast_sockaddr_port(&https_desc.local_address)) {
1260                         ast_sockaddr_set_port(&https_desc.local_address, DEFAULT_TLS_PORT);
1261                 }
1262                 if (ast_ssl_setup(https_desc.tls_cfg)) {
1263                         ast_tcptls_server_start(&https_desc);
1264                 }
1265         }
1266
1267         return 0;
1268 }
1269
1270 static char *handle_show_http(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
1271 {
1272         struct ast_http_uri *urih;
1273         struct http_uri_redirect *redirect;
1274
1275         switch (cmd) {
1276         case CLI_INIT:
1277                 e->command = "http show status";
1278                 e->usage =
1279                         "Usage: http show status\n"
1280                         "       Lists status of internal HTTP engine\n";
1281                 return NULL;
1282         case CLI_GENERATE:
1283                 return NULL;
1284         }
1285
1286         if (a->argc != 3) {
1287                 return CLI_SHOWUSAGE;
1288         }
1289         ast_cli(a->fd, "HTTP Server Status:\n");
1290         ast_cli(a->fd, "Prefix: %s\n", prefix);
1291         if (ast_sockaddr_isnull(&http_desc.old_address)) {
1292                 ast_cli(a->fd, "Server Disabled\n\n");
1293         } else {
1294                 ast_cli(a->fd, "Server Enabled and Bound to %s\n\n",
1295                         ast_sockaddr_stringify(&http_desc.old_address));
1296                 if (http_tls_cfg.enabled) {
1297                         ast_cli(a->fd, "HTTPS Server Enabled and Bound to %s\n\n",
1298                                 ast_sockaddr_stringify(&https_desc.old_address));
1299                 }
1300         }
1301
1302         ast_cli(a->fd, "Enabled URI's:\n");
1303         AST_RWLIST_RDLOCK(&uris);
1304         if (AST_RWLIST_EMPTY(&uris)) {
1305                 ast_cli(a->fd, "None.\n");
1306         } else {
1307                 AST_RWLIST_TRAVERSE(&uris, urih, entry)
1308                         ast_cli(a->fd, "%s/%s%s => %s\n", prefix, urih->uri, (urih->has_subtree ? "/..." : "" ), urih->description);
1309         }
1310         AST_RWLIST_UNLOCK(&uris);
1311
1312         ast_cli(a->fd, "\nEnabled Redirects:\n");
1313         AST_RWLIST_RDLOCK(&uri_redirects);
1314         AST_RWLIST_TRAVERSE(&uri_redirects, redirect, entry)
1315                 ast_cli(a->fd, "  %s => %s\n", redirect->target, redirect->dest);
1316         if (AST_RWLIST_EMPTY(&uri_redirects)) {
1317                 ast_cli(a->fd, "  None.\n");
1318         }
1319         AST_RWLIST_UNLOCK(&uri_redirects);
1320
1321         return CLI_SUCCESS;
1322 }
1323
1324 int ast_http_reload(void)
1325 {
1326         return __ast_http_load(1);
1327 }
1328
1329 static struct ast_cli_entry cli_http[] = {
1330         AST_CLI_DEFINE(handle_show_http, "Display HTTP server status"),
1331 };
1332
1333 static void http_shutdown(void)
1334 {
1335         ast_cli_unregister_multiple(cli_http, ARRAY_LEN(cli_http));
1336 }
1337
1338 int ast_http_init(void)
1339 {
1340         ast_http_uri_link(&statusuri);
1341         ast_http_uri_link(&staticuri);
1342         ast_cli_register_multiple(cli_http, ARRAY_LEN(cli_http));
1343         ast_register_atexit(http_shutdown);
1344
1345         return __ast_http_load(0);
1346 }