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                         l = strlen(urih->uri);
 745                         c = uri + l;    /* candidate */
 746                         ast_debug(2, "match request [%s] with handler [%s] len %d\n", uri, urih->uri, l);
 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                 ast_debug(1, "Match made with [%s]\n", urih->uri);
 763                 if (!urih->no_decode_uri) {
 764                         ast_uri_decode(uri, ast_uri_http_legacy);
 765                 }
 766                 res = urih->callback(ser, urih, uri, method, get_vars, headers);
 767         } else {
 768                 ast_debug(1, "Requested URI [%s] has no handler\n", uri);
 769                 ast_http_error(ser, 404, "Not Found", "The requested URL was not found on this server.");
 770         }
 771
 772 cleanup:
 773         ast_variables_destroy(get_vars);
 774         return res;
 775 }
 776
 777 #ifdef DO_SSL
 778 #if defined(HAVE_FUNOPEN)
 779 #define HOOK_T int
 780 #define LEN_T int
 781 #else
 782 #define HOOK_T ssize_t
 783 #define LEN_T size_t
 784 #endif
 785
 786 /*!
 787  * replacement read/write functions for SSL support.
 788  * We use wrappers rather than SSL_read/SSL_write directly so
 789  * we can put in some debugging.
 790  */
 791 /*static HOOK_T ssl_read(void *cookie, char *buf, LEN_T len)
 792 {
 793         int i = SSL_read(cookie, buf, len-1);
 794 #if 0
 795         if (i >= 0)
 796                 buf[i] = '\0';
 797         ast_verbose("ssl read size %d returns %d <%s>\n", (int)len, i, buf);
 798 #endif
 799         return i;
 800 }
 801
 802 static HOOK_T ssl_write(void *cookie, const char *buf, LEN_T len)
 803 {
 804 #if 0
 805         char *s = ast_alloca(len+1);
 806         strncpy(s, buf, len);
 807         s[len] = '\0';
 808         ast_verbose("ssl write size %d <%s>\n", (int)len, s);
 809 #endif
 810         return SSL_write(cookie, buf, len);
 811 }
 812
 813 static int ssl_close(void *cookie)
 814 {
 815         close(SSL_get_fd(cookie));
 816         SSL_shutdown(cookie);
 817         SSL_free(cookie);
 818         return 0;
 819 }*/
 820 #endif  /* DO_SSL */
 821
 822 static struct ast_variable *parse_cookies(char *cookies)
 823 {
 824         char *cur;
 825         struct ast_variable *vars = NULL, *var;
 826
 827         while ((cur = strsep(&cookies, ";"))) {
 828                 char *name, *val;
 829
 830                 name = val = cur;
 831                 strsep(&val, "=");
 832
 833                 if (ast_strlen_zero(name) || ast_strlen_zero(val)) {
 834                         continue;
 835                 }
 836
 837                 name = ast_strip(name);
 838                 val = ast_strip_quoted(val, "\"", "\"");
 839
 840                 if (ast_strlen_zero(name) || ast_strlen_zero(val)) {
 841                         continue;
 842                 }
 843
 844                 ast_debug(1, "HTTP Cookie, Name: '%s'  Value: '%s'\n", name, val);
 845
 846                 var = ast_variable_new(name, val, __FILE__);
 847                 var->next = vars;
 848                 vars = var;
 849         }
 850
 851         return vars;
 852 }
 853
 854 /* get cookie from Request headers */
 855 struct ast_variable *ast_http_get_cookies(struct ast_variable *headers)
 856 {
 857         struct ast_variable *v, *cookies=NULL;
 858
 859         for (v = headers; v; v = v->next) {
 860                 if (!strcasecmp(v->name, "Cookie")) {
 861                         char *tmp = ast_strdupa(v->value);
 862                         if (cookies) {
 863                                 ast_variables_destroy(cookies);
 864                         }
 865
 866                         cookies = parse_cookies(tmp);
 867                 }
 868         }
 869         return cookies;
 870 }
 871
 872 static struct ast_http_auth *auth_create(const char *userid,
 873         const char *password)
 874 {
 875         RAII_VAR(struct ast_http_auth *, auth, NULL, ao2_cleanup);
 876         size_t userid_len;
 877         size_t password_len;
 878
 879         if (!userid || !password) {
 880                 ast_log(LOG_ERROR, "Invalid userid/password\n");
 881                 return NULL;
 882         }
 883
 884         userid_len = strlen(userid) + 1;
 885         password_len = strlen(password) + 1;
 886
 887         /* Allocate enough room to store everything in one memory block */
 888         auth = ao2_alloc(sizeof(*auth) + userid_len + password_len, NULL);
 889         if (!auth) {
 890                 return NULL;
 891         }
 892
 893         /* Put the userid right after the struct */
 894         auth->userid = (char *)(auth + 1);
 895         strcpy(auth->userid, userid);
 896
 897         /* Put the password right after the userid */
 898         auth->password = auth->userid + userid_len;
 899         strcpy(auth->password, password);
 900
 901         ao2_ref(auth, +1);
 902         return auth;
 903 }
 904
 905 #define BASIC_PREFIX "Basic "
 906 #define BASIC_LEN 6 /*!< strlen(BASIC_PREFIX) */
 907
 908 struct ast_http_auth *ast_http_get_auth(struct ast_variable *headers)
 909 {
 910         struct ast_variable *v;
 911
 912         for (v = headers; v; v = v->next) {
 913                 const char *base64;
 914                 char decoded[256] = {};
 915                 char *username;
 916                 char *password;
 917                 int cnt;
 918
 919                 if (strcasecmp("Authorization", v->name) != 0) {
 920                         continue;
 921                 }
 922
 923                 if (!ast_begins_with(v->value, BASIC_PREFIX)) {
 924                         ast_log(LOG_DEBUG,
 925                                 "Unsupported Authorization scheme\n");
 926                         continue;
 927                 }
 928
 929                 /* Basic auth header parsing. RFC 2617, section 2.
 930                  *   credentials = "Basic" basic-credentials
 931                  *   basic-credentials = base64-user-pass
 932                  *   base64-user-pass  = <base64 encoding of user-pass,
 933                  *                        except not limited to 76 char/line>
 934                  *   user-pass   = userid ":" password
 935                  */
 936
 937                 base64 = v->value + BASIC_LEN;
 938
 939                 /* This will truncate "userid:password" lines to
 940                  * sizeof(decoded). The array is long enough that this shouldn't
 941                  * be a problem */
 942                 cnt = ast_base64decode((unsigned char*)decoded, base64,
 943                         sizeof(decoded) - 1);
 944                 ast_assert(cnt < sizeof(decoded));
 945
 946                 /* Split the string at the colon */
 947                 password = decoded;
 948                 username = strsep(&password, ":");
 949                 if (!password) {
 950                         ast_log(LOG_WARNING, "Invalid Authorization header\n");
 951                         return NULL;
 952                 }
 953
 954                 return auth_create(username, password);
 955         }
 956
 957         return NULL;
 958 }
 959
 960 static void *httpd_helper_thread(void *data)
 961 {
 962         char buf[4096];
 963         char header_line[4096];
 964         struct ast_tcptls_session_instance *ser = data;
 965         struct ast_variable *headers = NULL;
 966         struct ast_variable *tail = headers;
 967         char *uri, *method;
 968         enum ast_http_method http_method = AST_HTTP_UNKNOWN;
 969
 970         if (ast_atomic_fetchadd_int(&session_count, +1) >= session_limit) {
 971                 goto done;
 972         }
 973
 974         if (!fgets(buf, sizeof(buf), ser->f)) {
 975                 goto done;
 976         }
 977
 978         /* Get method */
 979         method = ast_skip_blanks(buf);
 980         uri = ast_skip_nonblanks(method);
 981         if (*uri) {
 982                 *uri++ = '\0';
 983         }
 984
 985         if (!strcasecmp(method,"GET")) {
 986                 http_method = AST_HTTP_GET;
 987         } else if (!strcasecmp(method,"POST")) {
 988                 http_method = AST_HTTP_POST;
 989         } else if (!strcasecmp(method,"HEAD")) {
 990                 http_method = AST_HTTP_HEAD;
 991         } else if (!strcasecmp(method,"PUT")) {
 992                 http_method = AST_HTTP_PUT;
 993         } else if (!strcasecmp(method,"DELETE")) {
 994                 http_method = AST_HTTP_DELETE;
 995         } else if (!strcasecmp(method,"OPTIONS")) {
 996                 http_method = AST_HTTP_OPTIONS;
 997         }
 998
 999         uri = ast_skip_blanks(uri);     /* Skip white space */
1000
1001         if (*uri) {                     /* terminate at the first blank */
1002                 char *c = ast_skip_nonblanks(uri);
1003
1004                 if (*c) {
1005                         *c = '\0';
1006                 }
1007         }
1008
1009         /* process "Request Headers" lines */
1010         while (fgets(header_line, sizeof(header_line), ser->f)) {
1011                 char *name, *value;
1012
1013                 /* Trim trailing characters */
1014                 ast_trim_blanks(header_line);
1015                 if (ast_strlen_zero(header_line)) {
1016                         break;
1017                 }
1018
1019                 value = header_line;
1020                 name = strsep(&value, ":");
1021                 if (!value) {
1022                         continue;
1023                 }
1024
1025                 value = ast_skip_blanks(value);
1026                 if (ast_strlen_zero(value) || ast_strlen_zero(name)) {
1027                         continue;
1028                 }
1029
1030                 ast_trim_blanks(name);
1031
1032                 if (!headers) {
1033                         headers = ast_variable_new(name, value, __FILE__);
1034                         tail = headers;
1035                 } else {
1036                         tail->next = ast_variable_new(name, value, __FILE__);
1037                         tail = tail->next;
1038                 }
1039         }
1040
1041         if (!*uri) {
1042                 ast_http_error(ser, 400, "Bad Request", "Invalid Request");
1043                 goto done;
1044         }
1045
1046         handle_uri(ser, uri, http_method, headers);
1047
1048 done:
1049         ast_atomic_fetchadd_int(&session_count, -1);
1050
1051         /* clean up all the header information */
1052         if (headers) {
1053                 ast_variables_destroy(headers);
1054         }
1055
1056         if (ser->f) {
1057                 fclose(ser->f);
1058         }
1059         ao2_ref(ser, -1);
1060         ser = NULL;
1061         return NULL;
1062 }
1063
1064 /*!
1065  * \brief Add a new URI redirect
1066  * The entries in the redirect list are sorted by length, just like the list
1067  * of URI handlers.
1068  */
1069 static void add_redirect(const char *value)
1070 {
1071         char *target, *dest;
1072         struct http_uri_redirect *redirect, *cur;
1073         unsigned int target_len;
1074         unsigned int total_len;
1075
1076         dest = ast_strdupa(value);
1077         dest = ast_skip_blanks(dest);
1078         target = strsep(&dest, " ");
1079         target = ast_skip_blanks(target);
1080         target = strsep(&target, " "); /* trim trailing whitespace */
1081
1082         if (!dest) {
1083                 ast_log(LOG_WARNING, "Invalid redirect '%s'\n", value);
1084                 return;
1085         }
1086
1087         target_len = strlen(target) + 1;
1088         total_len = sizeof(*redirect) + target_len + strlen(dest) + 1;
1089
1090         if (!(redirect = ast_calloc(1, total_len))) {
1091                 return;
1092         }
1093         redirect->dest = redirect->target + target_len;
1094         strcpy(redirect->target, target);
1095         strcpy(redirect->dest, dest);
1096
1097         AST_RWLIST_WRLOCK(&uri_redirects);
1098
1099         target_len--; /* So we can compare directly with strlen() */
1100         if (AST_RWLIST_EMPTY(&uri_redirects)
1101                 || strlen(AST_RWLIST_FIRST(&uri_redirects)->target) <= target_len ) {
1102                 AST_RWLIST_INSERT_HEAD(&uri_redirects, redirect, entry);
1103                 AST_RWLIST_UNLOCK(&uri_redirects);
1104
1105                 return;
1106         }
1107
1108         AST_RWLIST_TRAVERSE(&uri_redirects, cur, entry) {
1109                 if (AST_RWLIST_NEXT(cur, entry)
1110                         && strlen(AST_RWLIST_NEXT(cur, entry)->target) <= target_len ) {
1111                         AST_RWLIST_INSERT_AFTER(&uri_redirects, cur, redirect, entry);
1112                         AST_RWLIST_UNLOCK(&uri_redirects);
1113                         return;
1114                 }
1115         }
1116
1117         AST_RWLIST_INSERT_TAIL(&uri_redirects, redirect, entry);
1118
1119         AST_RWLIST_UNLOCK(&uri_redirects);
1120 }
1121
1122 static int __ast_http_load(int reload)
1123 {
1124         struct ast_config *cfg;
1125         struct ast_variable *v;
1126         int enabled=0;
1127         int newenablestatic=0;
1128         char newprefix[MAX_PREFIX] = "";
1129         struct http_uri_redirect *redirect;
1130         struct ast_flags config_flags = { reload ? CONFIG_FLAG_FILEUNCHANGED : 0 };
1131         uint32_t bindport = DEFAULT_PORT;
1132         RAII_VAR(struct ast_sockaddr *, addrs, NULL, ast_free);
1133         int num_addrs = 0;
1134         int http_tls_was_enabled = 0;
1135
1136         cfg = ast_config_load2("http.conf", "http", config_flags);
1137         if (cfg == CONFIG_STATUS_FILEMISSING || cfg == CONFIG_STATUS_FILEUNCHANGED || cfg == CONFIG_STATUS_FILEINVALID) {
1138                 return 0;
1139         }
1140
1141         http_tls_was_enabled = (reload && http_tls_cfg.enabled);
1142
1143         http_tls_cfg.enabled = 0;
1144         if (http_tls_cfg.certfile) {
1145                 ast_free(http_tls_cfg.certfile);
1146         }
1147         http_tls_cfg.certfile = ast_strdup(AST_CERTFILE);
1148
1149         if (http_tls_cfg.pvtfile) {
1150                 ast_free(http_tls_cfg.pvtfile);
1151         }
1152         http_tls_cfg.pvtfile = ast_strdup("");
1153
1154         if (http_tls_cfg.cipher) {
1155                 ast_free(http_tls_cfg.cipher);
1156         }
1157         http_tls_cfg.cipher = ast_strdup("");
1158
1159         AST_RWLIST_WRLOCK(&uri_redirects);
1160         while ((redirect = AST_RWLIST_REMOVE_HEAD(&uri_redirects, entry))) {
1161                 ast_free(redirect);
1162         }
1163         AST_RWLIST_UNLOCK(&uri_redirects);
1164
1165         ast_sockaddr_setnull(&https_desc.local_address);
1166
1167         if (cfg) {
1168                 v = ast_variable_browse(cfg, "general");
1169                 for (; v; v = v->next) {
1170
1171                         /* read tls config options while preventing unsupported options from being set */
1172                         if (strcasecmp(v->name, "tlscafile")
1173                                 && strcasecmp(v->name, "tlscapath")
1174                                 && strcasecmp(v->name, "tlscadir")
1175                                 && strcasecmp(v->name, "tlsverifyclient")
1176                                 && strcasecmp(v->name, "tlsdontverifyserver")
1177                                 && strcasecmp(v->name, "tlsclientmethod")
1178                                 && strcasecmp(v->name, "sslclientmethod")
1179                                 && strcasecmp(v->name, "tlscipher")
1180                                 && strcasecmp(v->name, "sslcipher")
1181                                 && !ast_tls_read_conf(&http_tls_cfg, &https_desc, v->name, v->value)) {
1182                                 continue;
1183                         }
1184
1185                         if (!strcasecmp(v->name, "enabled")) {
1186                                 enabled = ast_true(v->value);
1187                         } else if (!strcasecmp(v->name, "enablestatic")) {
1188                                 newenablestatic = ast_true(v->value);
1189                         } else if (!strcasecmp(v->name, "bindport")) {
1190                                 if (ast_parse_arg(v->value, PARSE_UINT32 | PARSE_IN_RANGE | PARSE_DEFAULT, &bindport, DEFAULT_PORT, 0, 65535)) {
1191                                         ast_log(LOG_WARNING, "Invalid port %s specified. Using default port %"PRId32, v->value, DEFAULT_PORT);
1192                                 }
1193                         } else if (!strcasecmp(v->name, "bindaddr")) {
1194                                 if (!(num_addrs = ast_sockaddr_resolve(&addrs, v->value, 0, AST_AF_UNSPEC))) {
1195                                         ast_log(LOG_WARNING, "Invalid bind address %s\n", v->value);
1196                                 }
1197                         } else if (!strcasecmp(v->name, "prefix")) {
1198                                 if (!ast_strlen_zero(v->value)) {
1199                                         newprefix[0] = '/';
1200                                         ast_copy_string(newprefix + 1, v->value, sizeof(newprefix) - 1);
1201                                 } else {
1202                                         newprefix[0] = '\0';
1203                                 }
1204                         } else if (!strcasecmp(v->name, "redirect")) {
1205                                 add_redirect(v->value);
1206                         } else if (!strcasecmp(v->name, "sessionlimit")) {
1207                                 if (ast_parse_arg(v->value, PARSE_INT32|PARSE_DEFAULT|PARSE_IN_RANGE,
1208                                                         &session_limit, DEFAULT_SESSION_LIMIT, 1, INT_MAX)) {
1209                                         ast_log(LOG_WARNING, "Invalid %s '%s' at line %d of http.conf\n",
1210                                                         v->name, v->value, v->lineno);
1211                                 }
1212                         } else {
1213                                 ast_log(LOG_WARNING, "Ignoring unknown option '%s' in http.conf\n", v->name);
1214                         }
1215                 }
1216
1217                 ast_config_destroy(cfg);
1218         }
1219
1220         if (strcmp(prefix, newprefix)) {
1221                 ast_copy_string(prefix, newprefix, sizeof(prefix));
1222         }
1223         enablestatic = newenablestatic;
1224
1225         if (num_addrs && enabled) {
1226                 int i;
1227                 for (i = 0; i < num_addrs; ++i) {
1228                         ast_sockaddr_copy(&http_desc.local_address, &addrs[i]);
1229                         if (!ast_sockaddr_port(&http_desc.local_address)) {
1230                                 ast_sockaddr_set_port(&http_desc.local_address, bindport);
1231                         }
1232                         ast_tcptls_server_start(&http_desc);
1233                         if (http_desc.accept_fd == -1) {
1234                                 ast_log(LOG_WARNING, "Failed to start HTTP server for address %s\n", ast_sockaddr_stringify(&addrs[i]));
1235                                 ast_sockaddr_setnull(&http_desc.local_address);
1236                         } else {
1237                                 ast_verb(1, "Bound HTTP server to address %s\n", ast_sockaddr_stringify(&addrs[i]));
1238                                 break;
1239                         }
1240                 }
1241                 /* When no specific TLS bindaddr is specified, we just use
1242                  * the non-TLS bindaddress here.
1243                  */
1244                 if (ast_sockaddr_isnull(&https_desc.local_address) && http_desc.accept_fd != -1) {
1245                         ast_sockaddr_copy(&https_desc.local_address, &https_desc.local_address);
1246                         /* Of course, we can't use the same port though.
1247                          * Since no bind address was specified, we just use the
1248                          * default TLS port
1249                          */
1250                         ast_sockaddr_set_port(&https_desc.local_address, DEFAULT_TLS_PORT);
1251                 }
1252         }
1253         if (http_tls_was_enabled && !http_tls_cfg.enabled) {
1254                 ast_tcptls_server_stop(&https_desc);
1255         } else if (http_tls_cfg.enabled && !ast_sockaddr_isnull(&https_desc.local_address)) {
1256                 /* We can get here either because a TLS-specific address was specified
1257                  * or because we copied the non-TLS address here. In the case where
1258                  * we read an explicit address from the config, there may have been
1259                  * no port specified, so we'll just use the default TLS port.
1260                  */
1261                 if (!ast_sockaddr_port(&https_desc.local_address)) {
1262                         ast_sockaddr_set_port(&https_desc.local_address, DEFAULT_TLS_PORT);
1263                 }
1264                 if (ast_ssl_setup(https_desc.tls_cfg)) {
1265                         ast_tcptls_server_start(&https_desc);
1266                 }
1267         }
1268
1269         return 0;
1270 }
1271
1272 static char *handle_show_http(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
1273 {
1274         struct ast_http_uri *urih;
1275         struct http_uri_redirect *redirect;
1276
1277         switch (cmd) {
1278         case CLI_INIT:
1279                 e->command = "http show status";
1280                 e->usage =
1281                         "Usage: http show status\n"
1282                         "       Lists status of internal HTTP engine\n";
1283                 return NULL;
1284         case CLI_GENERATE:
1285                 return NULL;
1286         }
1287
1288         if (a->argc != 3) {
1289                 return CLI_SHOWUSAGE;
1290         }
1291         ast_cli(a->fd, "HTTP Server Status:\n");
1292         ast_cli(a->fd, "Prefix: %s\n", prefix);
1293         if (ast_sockaddr_isnull(&http_desc.old_address)) {
1294                 ast_cli(a->fd, "Server Disabled\n\n");
1295         } else {
1296                 ast_cli(a->fd, "Server Enabled and Bound to %s\n\n",
1297                         ast_sockaddr_stringify(&http_desc.old_address));
1298                 if (http_tls_cfg.enabled) {
1299                         ast_cli(a->fd, "HTTPS Server Enabled and Bound to %s\n\n",
1300                                 ast_sockaddr_stringify(&https_desc.old_address));
1301                 }
1302         }
1303
1304         ast_cli(a->fd, "Enabled URI's:\n");
1305         AST_RWLIST_RDLOCK(&uris);
1306         if (AST_RWLIST_EMPTY(&uris)) {
1307                 ast_cli(a->fd, "None.\n");
1308         } else {
1309                 AST_RWLIST_TRAVERSE(&uris, urih, entry)
1310                         ast_cli(a->fd, "%s/%s%s => %s\n", prefix, urih->uri, (urih->has_subtree ? "/..." : "" ), urih->description);
1311         }
1312         AST_RWLIST_UNLOCK(&uris);
1313
1314         ast_cli(a->fd, "\nEnabled Redirects:\n");
1315         AST_RWLIST_RDLOCK(&uri_redirects);
1316         AST_RWLIST_TRAVERSE(&uri_redirects, redirect, entry)
1317                 ast_cli(a->fd, "  %s => %s\n", redirect->target, redirect->dest);
1318         if (AST_RWLIST_EMPTY(&uri_redirects)) {
1319                 ast_cli(a->fd, "  None.\n");
1320         }
1321         AST_RWLIST_UNLOCK(&uri_redirects);
1322
1323         return CLI_SUCCESS;
1324 }
1325
1326 int ast_http_reload(void)
1327 {
1328         return __ast_http_load(1);
1329 }
1330
1331 static struct ast_cli_entry cli_http[] = {
1332         AST_CLI_DEFINE(handle_show_http, "Display HTTP server status"),
1333 };
1334
1335 static void http_shutdown(void)
1336 {
1337         ast_cli_unregister_multiple(cli_http, ARRAY_LEN(cli_http));
1338 }
1339
1340 int ast_http_init(void)
1341 {
1342         ast_http_uri_link(&statusuri);
1343         ast_http_uri_link(&staticuri);
1344         ast_cli_register_multiple(cli_http, ARRAY_LEN(cli_http));
1345         ast_register_atexit(http_shutdown);
1346
1347         return __ast_http_load(0);
1348 }