webcit/webcit.c

   1 /*
   2  * $Id$
   3  *
   4  * This is the main transaction loop of the web service.  It maintains a
   5  * persistent session to the Citadel server, handling HTTP WebCit requests as
   6  * they arrive and presenting a user interface.
   7  *
   8  */
   9
  10 #include <ctype.h>
  11 #include <stdlib.h>
  12 #include <unistd.h>
  13 #include <stdio.h>
  14 #include <fcntl.h>
  15 #include <signal.h>
  16 #include <sys/types.h>
  17 #include <sys/wait.h>
  18 #include <sys/socket.h>
  19 #include <sys/time.h>
  20 #include <sys/stat.h>
  21 #include <limits.h>
  22 #include <netinet/in.h>
  23 #include <netdb.h>
  24 #include <string.h>
  25 #include <pwd.h>
  26 #include <errno.h>
  27 #include <stdarg.h>
  28 #include <pthread.h>
  29 #include <signal.h>
  30 #include "webcit.h"
  31 #include "groupdav.h"
  32 #include "webserver.h"
  33 #include "mime_parser.h"
  34
  35 /*
  36  * String to unset the cookie.
  37  * Any date "in the past" will work, so I chose my birthday, right down to
  38  * the exact minute.  :)
  39  */
  40 static char *unset = "; expires=28-May-1971 18:10:00 GMT";
  41
  42 void unescape_input(char *buf)
  43 {
  44         int a, b;
  45         char hex[3];
  46
  47         while ((isspace(buf[strlen(buf) - 1])) && (strlen(buf) > 0))
  48                 buf[strlen(buf) - 1] = 0;
  49
  50         for (a = 0; a < strlen(buf); ++a) {
  51                 if (buf[a] == '+')
  52                         buf[a] = ' ';
  53                 if (buf[a] == '%') {
  54                         hex[0] = buf[a + 1];
  55                         hex[1] = buf[a + 2];
  56                         hex[2] = 0;
  57                         b = 0;
  58                         sscanf(hex, "%02x", &b);
  59                         buf[a] = (char) b;
  60                         strcpy(&buf[a + 1], &buf[a + 3]);
  61                 }
  62         }
  63
  64 }
  65
  66
  67 void addurls(char *url)
  68 {
  69         char *up, *ptr;
  70         char buf[SIZ];
  71         int a, b;
  72         struct urlcontent *u;
  73
  74         up = url;
  75         while (strlen(up) > 0) {
  76
  77                 /* locate the = sign */
  78                 safestrncpy(buf, up, sizeof buf);
  79                 b = (-1);
  80                 for (a = 255; a >= 0; --a)
  81                         if (buf[a] == '=')
  82                                 b = a;
  83                 if (b < 0)
  84                         return;
  85                 buf[b] = 0;
  86
  87                 u = (struct urlcontent *) malloc(sizeof(struct urlcontent));
  88                 u->next = WC->urlstrings;
  89                 WC->urlstrings = u;
  90                 strcpy(u->url_key, buf);
  91
  92                 /* now chop that part off */
  93                 for (a = 0; a <= b; ++a)
  94                         ++up;
  95
  96                 /* locate "&" and "?" delimiters */
  97                 ptr = up;
  98                 b = strlen(up);
  99                 for (a = 0; a < strlen(up); ++a) {
 100                         if ( (ptr[0] == '&') || (ptr[0] == '?') ) {
 101                                 b = a;
 102                                 break;
 103                         }
 104                         ++ptr;
 105                 }
 106                 ptr = up;
 107                 for (a = 0; a < b; ++a)
 108                         ++ptr;
 109                 strcpy(ptr, "");
 110
 111                 u->url_data = malloc(strlen(up) + 2);
 112                 strcpy(u->url_data, up);
 113                 u->url_data[b] = 0;
 114                 unescape_input(u->url_data);
 115                 up = ptr;
 116                 ++up;
 117         }
 118 }
 119
 120 void free_urls(void)
 121 {
 122         struct urlcontent *u;
 123
 124         while (WC->urlstrings != NULL) {
 125                 free(WC->urlstrings->url_data);
 126                 u = WC->urlstrings->next;
 127                 free(WC->urlstrings);
 128                 WC->urlstrings = u;
 129         }
 130 }
 131
 132 /*
 133  * Diagnostic function to display the contents of all variables
 134  */
 135 void dump_vars(void)
 136 {
 137         struct urlcontent *u;
 138
 139         for (u = WC->urlstrings; u != NULL; u = u->next) {
 140                 wprintf("%38s = %s\n", u->url_key, u->url_data);
 141         }
 142 }
 143
 144 char *bstr(char *key)
 145 {
 146         struct urlcontent *u;
 147
 148         for (u = WC->urlstrings; u != NULL; u = u->next) {
 149                 if (!strcasecmp(u->url_key, key))
 150                         return (u->url_data);
 151         }
 152         return ("");
 153 }
 154
 155
 156 void wprintf(const char *format,...)
 157 {
 158         va_list arg_ptr;
 159         char wbuf[4096];
 160
 161         va_start(arg_ptr, format);
 162         vsnprintf(wbuf, sizeof wbuf, format, arg_ptr);
 163         va_end(arg_ptr);
 164
 165         client_write(wbuf, strlen(wbuf));
 166 }
 167
 168
 169 /*
 170  * wDumpContent() wraps up an HTTP session, closes tags, etc.
 171  *
 172  * print_standard_html_footer should be set to 0 to transmit only, 1 to
 173  * append the main menu and closing tags, or 2 to
 174  * append the closing tags only.
 175  */
 176 void wDumpContent(int print_standard_html_footer)
 177 {
 178         if (print_standard_html_footer) {
 179                 wprintf("</DIV>\n");    /* end of "text" div */
 180                 do_template("trailing");
 181         }
 182
 183         /* If we've been saving it all up for one big output burst,
 184          * go ahead and do that now.
 185          */
 186         end_burst();
 187 }
 188
 189
 190 /*
 191  * Copy a string, escaping characters which have meaning in HTML.  If
 192  * nbsp is nonzero, spaces are converted to non-breaking spaces.
 193  */
 194 void stresc(char *target, char *strbuf, int nbsp, int nolinebreaks)
 195 {
 196         int a;
 197         strcpy(target, "");
 198
 199         for (a = 0; a < strlen(strbuf); ++a) {
 200                 if (strbuf[a] == '<')
 201                         strcat(target, "&lt;");
 202                 else if (strbuf[a] == '>')
 203                         strcat(target, "&gt;");
 204                 else if (strbuf[a] == '&')
 205                         strcat(target, "&amp;");
 206                 else if (strbuf[a] == '\"')
 207                         strcat(target, "&quot;");
 208                 else if (strbuf[a] == '\'')
 209                         strcat(target, "&#39;");
 210                 else if (strbuf[a] == LB)
 211                         strcat(target, "<");
 212                 else if (strbuf[a] == RB)
 213                         strcat(target, ">");
 214                 else if (strbuf[a] == QU)
 215                         strcat(target, "\"");
 216                 else if ((strbuf[a] == 32) && (nbsp == 1))
 217                         strcat(target, "&nbsp;");
 218                 else if ((strbuf[a] == '\n') && (nolinebreaks))
 219                         strcat(target, "");     /* nothing */
 220                 else if ((strbuf[a] == '\r') && (nolinebreaks))
 221                         strcat(target, "");     /* nothing */
 222                 else
 223                         strncat(target, &strbuf[a], 1);
 224         }
 225 }
 226
 227 void escputs1(char *strbuf, int nbsp, int nolinebreaks)
 228 {
 229         char *buf;
 230
 231         if (strbuf == NULL) return;
 232         buf = malloc( (3 * strlen(strbuf)) + SIZ );
 233         stresc(buf, strbuf, nbsp, nolinebreaks);
 234         wprintf("%s", buf);
 235         free(buf);
 236 }
 237
 238 void escputs(char *strbuf)
 239 {
 240         escputs1(strbuf, 0, 0);
 241 }
 242
 243 /*
 244  * Escape a string for feeding out as a URL.
 245  * Returns a pointer to a buffer that must be freed by the caller!
 246  */
 247 void urlesc(char *outbuf, char *strbuf)
 248 {
 249         int a, b, c;
 250         char *ec = " #&;`'|*?-~<>^()[]{}$\\";
 251
 252         strcpy(outbuf, "");
 253
 254         for (a = 0; a < strlen(strbuf); ++a) {
 255                 c = 0;
 256                 for (b = 0; b < strlen(ec); ++b) {
 257                         if (strbuf[a] == ec[b])
 258                                 c = 1;
 259                 }
 260                 b = strlen(outbuf);
 261                 if (c == 1)
 262                         sprintf(&outbuf[b], "%%%02x", strbuf[a]);
 263                 else
 264                         sprintf(&outbuf[b], "%c", strbuf[a]);
 265         }
 266 }
 267
 268 void urlescputs(char *strbuf)
 269 {
 270         char outbuf[SIZ];
 271
 272         urlesc(outbuf, strbuf);
 273         wprintf("%s", outbuf);
 274 }
 275
 276
 277 /*
 278  * Copy a string, escaping characters for JavaScript strings.
 279  */
 280 void jsesc(char *target, char *strbuf)
 281 {
 282         int a;
 283         strcpy(target, "");
 284
 285         for (a = 0; a < strlen(strbuf); ++a) {
 286                 if (strbuf[a] == '<')
 287                         strcat(target, "[");
 288                 else if (strbuf[a] == '>')
 289                         strcat(target, "]");
 290                 else if (strbuf[a] == '\"')
 291                         strcat(target, "&quot;");
 292                 else if (strbuf[a] == '&')
 293                         strcat(target, "&amp;;");
 294                 else if (strbuf[a] == '\'')
 295                         strcat(target, "\\'");
 296                 else {
 297                         strncat(target, &strbuf[a], 1);
 298                 }
 299         }
 300 }
 301
 302 void jsescputs(char *strbuf)
 303 {
 304         char outbuf[SIZ];
 305
 306         jsesc(outbuf, strbuf);
 307         wprintf("%s", outbuf);
 308 }
 309
 310 /*
 311  * Copy a string, escaping characters for message text hold
 312  */
 313 void msgesc(char *target, char *strbuf)
 314 {
 315         int a;
 316         strcpy(target, "");
 317
 318         for (a = 0; a < strlen(strbuf); ++a) {
 319                 if (strbuf[a] == '\'')
 320                         strcat(target, "\\'");
 321                 else if (strbuf[a] == '\n')
 322                         strcat(target, " ");
 323                 else if (strbuf[a] == '\r')
 324                         strcat(target, " ");
 325                 else {
 326                         strncat(target, &strbuf[a], 1);
 327                 }
 328         }
 329 }
 330
 331 void msgescputs(char *strbuf) {
 332         char *outbuf;
 333
 334         if (strbuf == NULL) return;
 335         outbuf = malloc( (3 * strlen(strbuf)) + SIZ);
 336         msgesc(outbuf, strbuf);
 337         wprintf("%s", outbuf);
 338         free(outbuf);
 339 }
 340
 341
 342
 343
 344 /*
 345  * Output all that important stuff that the browser will want to see
 346  */
 347 void output_headers(    int do_httpheaders,     /* 1 = output HTTP headers                          */
 348                         int do_htmlhead,        /* 1 = output HTML <head> section and <body> opener */
 349
 350                         int do_room_banner,     /* 0=no, 1=yes,                                     */
 351                                                 /* 2 = I'm going to embed my own, so don't open the */
 352                                                 /*     <div id="content"> either.                   */
 353
 354                         int unset_cookies,      /* 1 = session is terminating, so unset the cookies */
 355                         int refresh30,          /* 1 = automatically refresh page every 30 seconds  */
 356                         int suppress_check,     /* 1 = suppress check for instant messages          */
 357                         int cache               /* 1 = allow browser to cache this page             */
 358 ) {
 359         char cookie[SIZ];
 360         char httpnow[SIZ];
 361
 362         wprintf("HTTP/1.0 200 OK\n");
 363         httpdate(httpnow, time(NULL));
 364
 365         if (do_httpheaders) {
 366                 wprintf("Content-type: text/html\r\n"
 367                         "Server: %s / %s\n"
 368                         "Connection: close\r\n",
 369                         SERVER, serv_info.serv_software
 370                 );
 371         }
 372
 373         if (cache) {
 374                 wprintf("Pragma: public\r\n"
 375                         "Cache-Control: max-age=3600, must-revalidate\r\n"
 376                         "Last-modified: %s\r\n",
 377                         httpnow
 378                 );
 379         }
 380         else {
 381                 wprintf("Pragma: no-cache\r\n"
 382                         "Cache-Control: no-store\r\n"
 383                 );
 384         }
 385
 386         stuff_to_cookie(cookie, WC->wc_session, WC->wc_username,
 387                         WC->wc_password, WC->wc_roomname);
 388
 389         if (unset_cookies) {
 390                 wprintf("Set-cookie: webcit=%s; path=/\r\n", unset);
 391         } else {
 392                 wprintf("Set-cookie: webcit=%s; path=/\r\n", cookie);
 393                 if (server_cookie != NULL) {
 394                         wprintf("%s\n", server_cookie);
 395                 }
 396         }
 397
 398         if (do_htmlhead) {
 399                 /* wprintf("\n"); */
 400                 begin_burst();
 401
 402                 if (refresh30) {
 403                         svprintf("REFRESHTAG", WCS_STRING, "%s",
 404                                 "<meta http-equiv=\"refresh\" content=\"30\" />\n");
 405                 }
 406                 else {
 407                         svprintf("REFRESHTAG", WCS_STRING, "%s",
 408                                 "<meta http-equiv=\"refresh\" content=\"500363689;\" />\n");
 409                 }
 410
 411                 do_template("head");
 412         }
 413
 414         /* ICONBAR */
 415         if (do_htmlhead) {
 416
 417                 if (WC->HaveInstantMessages) {
 418                         wprintf("<div id=\"page_popup\">\n");
 419                         page_popup();
 420                         wprintf("</div>\n");
 421                 }
 422                 if ( (WC->logged_in) && (!unset_cookies) ) {
 423                         wprintf("<div id=\"iconbar\">");
 424                         do_iconbar();
 425                         wprintf("</div>\n");
 426                 }
 427                 if (do_room_banner == 1) {
 428                         wprintf("<div id=\"banner\">\n");
 429                         embed_room_banner(NULL, navbar_default);
 430                         wprintf("</div>\n");
 431                 }
 432         }
 433
 434         if (do_room_banner == 1) {
 435                 wprintf("<div id=\"content\">\n");
 436
 437                 if (strlen(WC->ImportantMessage) > 0) {
 438                         do_template("beginbox_nt");
 439                         wprintf("<SPAN CLASS=\"errormsg\">"
 440                                 "%s</SPAN><br />\n", WC->ImportantMessage);
 441                         do_template("endbox");
 442                         strcpy(WC->ImportantMessage, "");
 443                 }
 444
 445         }
 446 }
 447
 448
 449 /*
 450  * Generic function to do an HTTP redirect.  Easy and fun.
 451  */
 452 void http_redirect(char *whichpage) {
 453         wprintf("HTTP/1.0 302 Moved Temporarily\n");
 454         wprintf("Location: %s\r\n", whichpage);
 455         wprintf("URI: %s\r\n", whichpage);
 456         wprintf("Content-type: text/html\r\n\r\n");
 457         wprintf("<html><body>\n");
 458         wprintf("you really want to be <A HREF=\"%s\">here</A> now\n",
 459                 whichpage);
 460         wprintf("</body></html>\n");
 461 }
 462
 463
 464
 465 void check_for_instant_messages()
 466 {
 467         char buf[SIZ];
 468
 469         serv_puts("NOOP");
 470         serv_gets(buf);
 471         if (buf[3] == '*') WC->HaveInstantMessages = 1;
 472 }
 473
 474
 475
 476
 477 /*
 478  * Output a piece of content to the web browser
 479  */
 480 void http_transmit_thing(char *thing, size_t length, char *content_type,
 481                          int is_static) {
 482
 483         output_headers(0, 0, 0, 0, 0, 0, is_static);
 484
 485         wprintf("Content-type: %s\r\n"
 486                 "Server: %s\r\n"
 487                 "Connection: close\r\n",
 488                 content_type,
 489                 SERVER);
 490
 491 #ifdef HAVE_ZLIB
 492         /* If we can send the data out compressed, please do so. */
 493         if (WC->gzip_ok) {
 494                 char *compressed_data = NULL;
 495                 uLongf compressed_len;
 496
 497                 compressed_len = (uLongf) ((length * 101) / 100) + 100;
 498                 compressed_data = malloc(compressed_len);
 499
 500                 if (compress_gzip((Bytef *) compressed_data,
 501                                   &compressed_len,
 502                                   (Bytef *) thing,
 503                                   (uLongf) length, Z_BEST_SPEED) == Z_OK) {
 504                         wprintf("Content-encoding: gzip\r\n"
 505                                 "Content-length: %ld\r\n"
 506                                 "\r\n",
 507                                 (long) compressed_len
 508                         );
 509                         client_write(compressed_data, (size_t)compressed_len);
 510                         free(compressed_data);
 511                         return;
 512                 }
 513         }
 514 #endif
 515
 516         /* No compression ... just send it out as-is */
 517         wprintf("Content-length: %ld\r\n"
 518                 "\r\n",
 519                 (long) length
 520         );
 521         client_write(thing, (size_t)length);
 522 }
 523
 524
 525
 526
 527 void output_static(char *what)
 528 {
 529         char buf[4096];
 530         FILE *fp;
 531         struct stat statbuf;
 532         off_t bytes;
 533         char *bigbuffer;
 534         char content_type[SIZ];
 535
 536         sprintf(buf, "static/%s", what);
 537         fp = fopen(buf, "rb");
 538         if (fp == NULL) {
 539                 wprintf("HTTP/1.0 404 %s\n", strerror(errno));
 540                 wprintf("Content-Type: text/plain\r\n");
 541                 wprintf("\r\n");
 542                 wprintf("Cannot open %s: %s\n", what, strerror(errno));
 543         } else {
 544                 if (!strncasecmp(&what[strlen(what) - 4], ".gif", 4))
 545                         strcpy(content_type, "image/gif");
 546                 else if (!strncasecmp(&what[strlen(what) - 4], ".txt", 4))
 547                         strcpy(content_type, "text/plain");
 548                 else if (!strncasecmp(&what[strlen(what) - 4], ".css", 4))
 549                         strcpy(content_type, "text/css");
 550                 else if (!strncasecmp(&what[strlen(what) - 4], ".jpg", 4))
 551                         strcpy(content_type, "image/jpeg");
 552                 else if (!strncasecmp(&what[strlen(what) - 4], ".png", 4))
 553                         strcpy(content_type, "image/png");
 554                 else if (!strncasecmp(&what[strlen(what) - 4], ".ico", 4))
 555                         strcpy(content_type, "image/x-icon");
 556                 else if (!strncasecmp(&what[strlen(what) - 5], ".html", 5))
 557                         strcpy(content_type, "text/html");
 558                 else if (!strncasecmp(&what[strlen(what) - 4], ".htm", 4))
 559                         strcpy(content_type, "text/html");
 560                 else if (!strncasecmp(&what[strlen(what) - 4], ".wml", 4))
 561                         strcpy(content_type, "text/vnd.wap.wml");
 562                 else if (!strncasecmp(&what[strlen(what) - 5], ".wmls", 5))
 563                         strcpy(content_type, "text/vnd.wap.wmlscript");
 564                 else if (!strncasecmp(&what[strlen(what) - 5], ".wmlc", 5))
 565                         strcpy(content_type, "application/vnd.wap.wmlc");
 566                 else if (!strncasecmp(&what[strlen(what) - 6], ".wmlsc", 6))
 567                         strcpy(content_type, "application/vnd.wap.wmlscriptc");
 568                 else if (!strncasecmp(&what[strlen(what) - 5], ".wbmp", 5))
 569                         strcpy(content_type, "image/vnd.wap.wbmp");
 570                 else if (!strncasecmp(&what[strlen(what) - 3], ".js", 3))
 571                         strcpy(content_type, "text/javascript");
 572                 else
 573                         strcpy(content_type, "application/octet-stream");
 574
 575                 fstat(fileno(fp), &statbuf);
 576                 bytes = statbuf.st_size;
 577                 /* lprintf(3, "Static: %s, (%s; %ld bytes)\r\n",
 578                         what, content_type, bytes); */
 579                 bigbuffer = malloc(bytes + 2);
 580                 fread(bigbuffer, bytes, 1, fp);
 581                 fclose(fp);
 582
 583                 http_transmit_thing(bigbuffer, (size_t)bytes, content_type, 1);
 584                 free(bigbuffer);
 585         }
 586         if (!strcasecmp(bstr("force_close_session"), "yes")) {
 587                 end_webcit_session();
 588         }
 589 }
 590
 591
 592 /*
 593  * When the browser requests an image file from the Citadel server,
 594  * this function is called to transmit it.
 595  */
 596 void output_image()
 597 {
 598         char buf[SIZ];
 599         char *xferbuf = NULL;
 600         off_t bytes;
 601
 602         serv_printf("OIMG %s|%s", bstr("name"), bstr("parm"));
 603         serv_gets(buf);
 604         if (buf[0] == '2') {
 605                 bytes = extract_long(&buf[4], 0);
 606                 xferbuf = malloc(bytes + 2);
 607
 608                 /* Read it from the server */
 609                 read_server_binary(xferbuf, bytes);
 610                 serv_puts("CLOS");
 611                 serv_gets(buf);
 612
 613                 /* Write it to the browser */
 614                 http_transmit_thing(xferbuf, (size_t)bytes, "image/gif", 0);
 615                 free(xferbuf);
 616
 617         } else {
 618
 619                 /* Instead of an ugly 404, send a 1x1 transparent GIF
 620                  * when there's no such image on the server.
 621                  */
 622                 output_static("blank.gif");
 623
 624                 /*
 625                 wprintf("HTTP/1.0 404 %s\n", &buf[4]);
 626                 output_headers(0, 0, 0, 0, 0, 0, 0);
 627                 wprintf("Content-Type: text/plain\r\n"
 628                         "\r\n"
 629                         "Error retrieving image: %s\n",
 630                         &buf[4]
 631                 );
 632                 */
 633
 634         }
 635
 636
 637
 638 }
 639
 640 /*
 641  */
 642 void output_mimepart()
 643 {
 644         char buf[SIZ];
 645         off_t bytes;
 646         char content_type[SIZ];
 647         char *content = NULL;
 648
 649         serv_printf("OPNA %s|%s", bstr("msgnum"), bstr("partnum"));
 650         serv_gets(buf);
 651         if (buf[0] == '2') {
 652                 bytes = extract_long(&buf[4], 0);
 653                 content = malloc(bytes + 2);
 654                 extract(content_type, &buf[4], 3);
 655                 output_headers(0, 0, 0, 0, 0, 0, 0);
 656                 read_server_binary(content, bytes);
 657                 serv_puts("CLOS");
 658                 serv_gets(buf);
 659                 http_transmit_thing(content, bytes, content_type, 0);
 660                 free(content);
 661         } else {
 662                 wprintf("HTTP/1.0 404 %s\n", &buf[4]);
 663                 output_headers(0, 0, 0, 0, 0, 0, 0);
 664                 wprintf("Content-Type: text/plain\r\n");
 665                 wprintf("\r\n");
 666                 wprintf("Error retrieving part: %s\n", &buf[4]);
 667         }
 668
 669 }
 670
 671
 672 /*
 673  */
 674 char *load_mimepart(long msgnum, char *partnum)
 675 {
 676         char buf[SIZ];
 677         off_t bytes;
 678         char content_type[SIZ];
 679         char *content;
 680
 681         serv_printf("OPNA %ld|%s", msgnum, partnum);
 682         serv_gets(buf);
 683         if (buf[0] == '2') {
 684                 bytes = extract_long(&buf[4], 0);
 685                 extract(content_type, &buf[4], 3);
 686
 687                 content = malloc(bytes + 2);
 688                 read_server_binary(content, bytes);
 689
 690                 serv_puts("CLOS");
 691                 serv_gets(buf);
 692                 content[bytes] = 0;     /* null terminate for good measure */
 693                 return(content);
 694         }
 695         else {
 696                 return(NULL);
 697         }
 698
 699 }
 700
 701
 702 /*
 703  * Convenience functions to display a page containing only a string
 704  */
 705 void convenience_page(char *titlebarcolor, char *titlebarmsg, char *messagetext)
 706 {
 707         wprintf("HTTP/1.0 200 OK\n");
 708         output_headers(1, 1, 2, 0, 0, 0, 0);
 709         wprintf("<div id=\"banner\">\n");
 710         wprintf("<TABLE WIDTH=100%% BORDER=0 BGCOLOR=\"#%s\"><TR><TD>", titlebarcolor);
 711         wprintf("<SPAN CLASS=\"titlebar\">%s</SPAN>\n", titlebarmsg);
 712         wprintf("</TD></TR></TABLE>\n");
 713         wprintf("</div>\n<div id=\"content\">\n");
 714         escputs(messagetext);
 715
 716         wprintf("<hr />\n");
 717         wDumpContent(1);
 718 }
 719
 720
 721 /*
 722  * Display a blank page.
 723  */
 724 void blank_page(void) {
 725         output_headers(1, 1, 0, 0, 1, 0, 0);
 726         wDumpContent(2);
 727 }
 728
 729
 730 /*
 731  * A template has been requested
 732  */
 733 void url_do_template(void) {
 734         do_template(bstr("template"));
 735 }
 736
 737
 738
 739 /*
 740  * Offer to make any page the user's "start page."
 741  */
 742 void offer_start_page(void) {
 743         wprintf("<A HREF=\"/change_start_page?startpage=");
 744         urlescputs(WC->this_page);
 745         wprintf("\">"
 746                 "<FONT SIZE=-2 COLOR=\"#AAAAAA\">Make this my start page</FONT>"
 747                 "</A>"
 748         );
 749 }
 750
 751
 752 /*
 753  * Change the user's start page
 754  */
 755 void change_start_page(void) {
 756
 757         if (bstr("startpage") == NULL) {
 758                 strcpy(WC->ImportantMessage,
 759                         "startpage set to null");
 760                 display_main_menu();
 761                 return;
 762         }
 763
 764         set_preference("startpage", bstr("startpage"));
 765
 766         output_headers(1, 1, 0, 0, 0, 0, 0);
 767         do_template("newstartpage");
 768         wDumpContent(1);
 769 }
 770
 771
 772
 773
 774 void display_success(char *successmessage)
 775 {
 776         convenience_page("007700", "OK", successmessage);
 777 }
 778
 779
 780
 781 void extract_action(char *actbuf, char *cmdbuf)
 782 {
 783         int i;
 784
 785         strcpy(actbuf, cmdbuf);
 786
 787         /*
 788          * First strip out the http method
 789          */
 790         remove_token(actbuf, 0, ' ');
 791         if (actbuf[0] == ' ') strcpy(actbuf, &actbuf[1]);
 792         if (actbuf[0] == '/') strcpy(actbuf, &actbuf[1]);
 793
 794         /*
 795          * Now kill invalid (for webcit) characters
 796          */
 797         for (i = 0; i < strlen(actbuf); ++i) {
 798                 if (actbuf[i] == ' ') {
 799                         actbuf[i] = 0;
 800                         i = 0;
 801                 }
 802                 if (actbuf[i] == '/') {
 803                         actbuf[i] = 0;
 804                         i = 0;
 805                 }
 806                 if (actbuf[i] == '?') {
 807                         actbuf[i] = 0;
 808                         i = 0;
 809                 }
 810                 if (actbuf[i] == '&') {
 811                         actbuf[i] = 0;
 812                         i = 0;
 813                 }
 814         }
 815 }
 816
 817
 818 void upload_handler(char *name, char *filename, char *partnum, char *disp,
 819                         void *content, char *cbtype, size_t length,
 820                         char *encoding, void *userdata)
 821 {
 822         struct urlcontent *u;
 823
 824         /* Form fields */
 825         if ( (length > 0) && (strlen(cbtype) == 0) ) {
 826                 u = (struct urlcontent *) malloc(sizeof(struct urlcontent));
 827                 u->next = WC->urlstrings;
 828                 WC->urlstrings = u;
 829                 safestrncpy(u->url_key, name, sizeof(u->url_key));
 830                 u->url_data = malloc(length + 1);
 831                 memcpy(u->url_data, content, length);
 832                 u->url_data[length] = 0;
 833         }
 834
 835         /* Uploaded files */
 836         if ( (length > 0) && (strlen(cbtype) > 0) ) {
 837                 WC->upload = malloc(length);
 838                 if (WC->upload != NULL) {
 839                         WC->upload_length = length;
 840                         safestrncpy(WC->upload_filename, filename,
 841                                         sizeof(WC->upload_filename));
 842                         safestrncpy(WC->upload_content_type, cbtype,
 843                                         sizeof(WC->upload_content_type));
 844                         memcpy(WC->upload, content, length);
 845                 }
 846                 else {
 847                         lprintf(3, "malloc() failed: %s\n", strerror(errno));
 848                 }
 849         }
 850
 851 }
 852
 853
 854
 855
 856 /*
 857  * Entry point for WebCit transaction
 858  */
 859 void session_loop(struct httprequest *req)
 860 {
 861         char cmd[SIZ];
 862         char method[SIZ];
 863         char action[SIZ];
 864         char buf[SIZ];
 865         int a, b;
 866         int ContentLength = 0;
 867         int BytesRead = 0;
 868         char ContentType[512];
 869         char *content = NULL;
 870         char *content_end = NULL;
 871         struct httprequest *hptr;
 872         char browser_host[SIZ];
 873         char user_agent[SIZ];
 874         int body_start = 0;
 875
 876         /* We stuff these with the values coming from the client cookies,
 877          * so we can use them to reconnect a timed out session if we have to.
 878          */
 879         char c_username[SIZ];
 880         char c_password[SIZ];
 881         char c_roomname[SIZ];
 882         char c_httpauth_string[SIZ];
 883         char c_httpauth_user[SIZ];
 884         char c_httpauth_pass[SIZ];
 885         char cookie[SIZ];
 886
 887         strcpy(c_username, "");
 888         strcpy(c_password, "");
 889         strcpy(c_roomname, "");
 890         strcpy(c_httpauth_string, "");
 891         strcpy(c_httpauth_user, DEFAULT_HTTPAUTH_USER);
 892         strcpy(c_httpauth_pass, DEFAULT_HTTPAUTH_PASS);
 893
 894         WC->upload_length = 0;
 895         WC->upload = NULL;
 896         WC->vars = NULL;
 897
 898         WC->is_wap = 0;
 899
 900         hptr = req;
 901         if (hptr == NULL) return;
 902
 903         strcpy(cmd, hptr->line);
 904         hptr = hptr->next;
 905         extract_token(method, cmd, 0, ' ');
 906         extract_action(action, cmd);
 907
 908         while (hptr != NULL) {
 909                 strcpy(buf, hptr->line);
 910                 hptr = hptr->next;
 911
 912                 if (!strncasecmp(buf, "Cookie: webcit=", 15)) {
 913                         safestrncpy(cookie, &buf[15], sizeof cookie);
 914                         cookie_to_stuff(cookie, NULL,
 915                                       c_username, c_password, c_roomname);
 916                 }
 917                 else if (!strncasecmp(buf, "Authorization: Basic ", 21)) {
 918                         CtdlDecodeBase64(c_httpauth_string, &buf[21], strlen(&buf[21]));
 919                         extract_token(c_httpauth_user, c_httpauth_string, 0, ':');
 920                         extract_token(c_httpauth_pass, c_httpauth_string, 1, ':');
 921                 }
 922                 else if (!strncasecmp(buf, "Content-length: ", 16)) {
 923                         ContentLength = atoi(&buf[16]);
 924                 }
 925                 else if (!strncasecmp(buf, "Content-type: ", 14)) {
 926                         safestrncpy(ContentType, &buf[14], sizeof ContentType);
 927                 }
 928                 else if (!strncasecmp(buf, "User-agent: ", 12)) {
 929                         safestrncpy(user_agent, &buf[12], sizeof user_agent);
 930                 }
 931                 else if (!strncasecmp(buf, "Host: ", 6)) {
 932                         safestrncpy(WC->http_host, &buf[6], sizeof WC->http_host);
 933                 }
 934                 /* Only WAP gateways explicitly name this content-type */
 935                 else if (strstr(buf, "text/vnd.wap.wml")) {
 936                         WC->is_wap = 1;
 937                 }
 938         }
 939
 940         if (ContentLength > 0) {
 941                 content = malloc(ContentLength + SIZ);
 942                 memset(content, 0, ContentLength + SIZ);
 943                 sprintf(content, "Content-type: %s\n"
 944                                 "Content-length: %d\n\n",
 945                                 ContentType, ContentLength);
 946                 body_start = strlen(content);
 947
 948                 /* Be daring and read it all at once. */
 949                 client_read(WC->http_sock, &content[BytesRead+body_start],
 950                         ContentLength);
 951
 952                 if (!strncasecmp(ContentType,
 953                               "application/x-www-form-urlencoded", 33)) {
 954                         addurls(&content[body_start]);
 955                 } else if (!strncasecmp(ContentType, "multipart", 9)) {
 956                         content_end = content + ContentLength + body_start;
 957                         mime_parser(content, content_end, *upload_handler,
 958                                         NULL, NULL, NULL, 0);
 959                 }
 960         } else {
 961                 content = NULL;
 962         }
 963
 964         /* make a note of where we are in case the user wants to save it */
 965         safestrncpy(WC->this_page, cmd, sizeof(WC->this_page));
 966         remove_token(WC->this_page, 2, ' ');
 967         remove_token(WC->this_page, 0, ' ');
 968
 969         /* If there are variables in the URL, we must grab them now */
 970         for (a = 0; a < strlen(cmd); ++a) {
 971                 if ((cmd[a] == '?') || (cmd[a] == '&')) {
 972                         for (b = a; b < strlen(cmd); ++b)
 973                                 if (isspace(cmd[b]))
 974                                         cmd[b] = 0;
 975                         addurls(&cmd[a + 1]);
 976                         cmd[a] = 0;
 977                 }
 978         }
 979
 980         /* Static content can be sent without connecting to Citadel. */
 981         if (!strcasecmp(action, "static")) {
 982                 strcpy(buf, &cmd[12]);
 983                 for (a = 0; a < strlen(buf); ++a)
 984                         if (isspace(buf[a]))
 985                                 buf[a] = 0;
 986                 output_static(buf);
 987                 goto SKIP_ALL_THIS_CRAP;        /* Don't try to connect */
 988         }
 989
 990         /*
 991          * If we're not connected to a Citadel server, try to hook up the
 992          * connection now.
 993          */
 994         if (!WC->connected) {
 995                 if (!strcasecmp(ctdlhost, "uds")) {
 996                         /* unix domain socket */
 997                         sprintf(buf, "%s/citadel.socket", ctdlport);
 998                         WC->serv_sock = uds_connectsock(buf);
 999                 }
1000                 else {
1001                         /* tcp socket */
1002                         WC->serv_sock = tcp_connectsock(ctdlhost, ctdlport);
1003                 }
1004
1005                 if (WC->serv_sock < 0) {
1006                         do_logout();
1007                         goto SKIP_ALL_THIS_CRAP;
1008                 }
1009                 else {
1010                         WC->connected = 1;
1011                         serv_gets(buf); /* get the server welcome message */
1012                         locate_host(browser_host, WC->http_sock);
1013                         get_serv_info(browser_host, user_agent);
1014                         if (serv_info.serv_rev_level < MINIMUM_CIT_VERSION) {
1015                                 wprintf("You are connected to a Citadel "
1016                                         "server running Citadel %d.%02d;\nin "
1017                                         "order to run this version of WebCit "
1018                                         "you must also have Citadel %d.%02d or"
1019                                         " newer.\n\n\n",
1020                                                 serv_info.serv_rev_level / 100,
1021                                                 serv_info.serv_rev_level % 100,
1022                                                 MINIMUM_CIT_VERSION / 100,
1023                                                 MINIMUM_CIT_VERSION % 100
1024                                         );
1025                                 end_webcit_session();
1026                                 goto SKIP_ALL_THIS_CRAP;
1027                         }
1028                 }
1029         }
1030
1031         /*
1032          * Functions which can be performed without logging in
1033          */
1034         if (!strcasecmp(action, "listsub")) {
1035                 do_listsub();
1036                 goto SKIP_ALL_THIS_CRAP;
1037         }
1038 #ifdef WEBCIT_WITH_CALENDAR_SERVICE
1039         if (!strcasecmp(action, "freebusy")) {
1040                 do_freebusy(cmd);
1041                 goto SKIP_ALL_THIS_CRAP;
1042         }
1043 #endif
1044
1045         /*
1046          * If we're not logged in, but we have HTTP Authentication data,
1047          * try logging in to Citadel using that.
1048          */
1049         if ((!WC->logged_in)
1050            && (strlen(c_httpauth_user) > 0)
1051            && (strlen(c_httpauth_pass) > 0)) {
1052                 serv_printf("USER %s", c_httpauth_user);
1053                 serv_gets(buf);
1054                 if (buf[0] == '3') {
1055                         serv_printf("PASS %s", c_httpauth_pass);
1056                         serv_gets(buf);
1057                         if (buf[0] == '2') {
1058                                 become_logged_in(c_httpauth_user,
1059                                                 c_httpauth_pass, buf);
1060                                 strcpy(WC->httpauth_user, c_httpauth_user);
1061                                 strcpy(WC->httpauth_pass, c_httpauth_pass);
1062                         }
1063                 }
1064         }
1065
1066         /*
1067          * The GroupDAV stuff relies on HTTP authentication instead of
1068          * our session's authentication.
1069          */
1070         if (!strncasecmp(action, "groupdav", 8)) {
1071                 groupdav_main(req, ContentType, /* do GroupDAV methods */
1072                         ContentLength, content+body_start);
1073                 if (!WC->logged_in) {
1074                         WC->killthis = 1;       /* If not logged in, don't */
1075                 }                               /* keep the session active */
1076                 goto SKIP_ALL_THIS_CRAP;
1077         }
1078
1079
1080         /*
1081          * If this isn't a GroupDAV session, it's an ordinary browser
1082          * connecting to the user interface.  Only allow GET and POST
1083          * methods.
1084          */
1085         if ((strcasecmp(method, "GET")) && (strcasecmp(method, "POST"))) {
1086                 wprintf("HTTP/1.1 405 Method Not Allowed\r\n");
1087                 groupdav_common_headers();
1088                 wprintf("Content-Length: 0\r\n\r\n");
1089                 goto SKIP_ALL_THIS_CRAP;
1090         }
1091
1092         /*
1093          * If we're not logged in, but we have username and password cookies
1094          * supplied by the browser, try using them to log in.
1095          */
1096         if ((!WC->logged_in)
1097            && (strlen(c_username) > 0)
1098            && (strlen(c_password) > 0)) {
1099                 serv_printf("USER %s", c_username);
1100                 serv_gets(buf);
1101                 if (buf[0] == '3') {
1102                         serv_printf("PASS %s", c_password);
1103                         serv_gets(buf);
1104                         if (buf[0] == '2') {
1105                                 become_logged_in(c_username, c_password, buf);
1106                         }
1107                 }
1108         }
1109         /*
1110          * If we don't have a current room, but a cookie specifying the
1111          * current room is supplied, make an effort to go there.
1112          */
1113         if ((strlen(WC->wc_roomname) == 0) && (strlen(c_roomname) > 0)) {
1114                 serv_printf("GOTO %s", c_roomname);
1115                 serv_gets(buf);
1116                 if (buf[0] == '2') {
1117                         strcpy(WC->wc_roomname, c_roomname);
1118                 }
1119         }
1120
1121         /*
1122          * If there are instant messages waiting, retrieve them for display.
1123          */
1124         check_for_instant_messages();
1125
1126         if (!strcasecmp(action, "image")) {
1127                 output_image();
1128
1129         /*
1130          * All functions handled below this point ... make sure we log in
1131          * before doing anything else!
1132          */
1133         } else if ((!WC->logged_in) && (!strcasecmp(action, "login"))) {
1134                 do_login();
1135         } else if (!WC->logged_in) {
1136                 display_login(NULL);
1137         }
1138
1139         /*
1140          * Various commands...
1141          */
1142
1143         else if (!strcasecmp(action, "do_welcome")) {
1144                 do_welcome();
1145         } else if (!strcasecmp(action, "blank")) {
1146                 blank_page();
1147         } else if (!strcasecmp(action, "do_template")) {
1148                 url_do_template();
1149         } else if (!strcasecmp(action, "display_aide_menu")) {
1150                 display_aide_menu();
1151         } else if (!strcasecmp(action, "display_main_menu")) {
1152                 display_main_menu();
1153         } else if (!strcasecmp(action, "whobbs")) {
1154                 whobbs();
1155         } else if (!strcasecmp(action, "knrooms")) {
1156                 knrooms();
1157         } else if (!strcasecmp(action, "gotonext")) {
1158                 slrp_highest();
1159                 gotonext();
1160         } else if (!strcasecmp(action, "skip")) {
1161                 gotonext();
1162         } else if (!strcasecmp(action, "ungoto")) {
1163                 ungoto();
1164         } else if (!strcasecmp(action, "dotgoto")) {
1165                 slrp_highest();
1166                 smart_goto(bstr("room"));
1167         } else if (!strcasecmp(action, "dotskip")) {
1168                 smart_goto(bstr("room"));
1169         } else if (!strcasecmp(action, "termquit")) {
1170                 do_logout();
1171         } else if (!strcasecmp(action, "readnew")) {
1172                 readloop("readnew");
1173         } else if (!strcasecmp(action, "readold")) {
1174                 readloop("readold");
1175         } else if (!strcasecmp(action, "readfwd")) {
1176                 readloop("readfwd");
1177         } else if (!strcasecmp(action, "headers")) {
1178                 readloop("headers");
1179         } else if (!strcasecmp(action, "display_enter")) {
1180                 display_enter();
1181         } else if (!strcasecmp(action, "post")) {
1182                 post_message();
1183         } else if (!strcasecmp(action, "move_msg")) {
1184                 move_msg();
1185         } else if (!strcasecmp(action, "delete_msg")) {
1186                 delete_msg();
1187         } else if (!strcasecmp(action, "userlist")) {
1188                 userlist();
1189         } else if (!strcasecmp(action, "showuser")) {
1190                 showuser();
1191         } else if (!strcasecmp(action, "display_page")) {
1192                 display_page();
1193         } else if (!strcasecmp(action, "page_user")) {
1194                 page_user();
1195         } else if (!strcasecmp(action, "chat")) {
1196                 do_chat();
1197         } else if (!strcasecmp(action, "display_private")) {
1198                 display_private("", 0);
1199         } else if (!strcasecmp(action, "goto_private")) {
1200                 goto_private();
1201         } else if (!strcasecmp(action, "zapped_list")) {
1202                 zapped_list();
1203         } else if (!strcasecmp(action, "display_zap")) {
1204                 display_zap();
1205         } else if (!strcasecmp(action, "zap")) {
1206                 zap();
1207         } else if (!strcasecmp(action, "display_entroom")) {
1208                 display_entroom();
1209         } else if (!strcasecmp(action, "entroom")) {
1210                 entroom();
1211         } else if (!strcasecmp(action, "display_whok")) {
1212                 display_whok();
1213         } else if (!strcasecmp(action, "do_invt_kick")) {
1214                 do_invt_kick();
1215         } else if (!strcasecmp(action, "display_editroom")) {
1216                 display_editroom();
1217         } else if (!strcasecmp(action, "netedit")) {
1218                 netedit();
1219         } else if (!strcasecmp(action, "editroom")) {
1220                 editroom();
1221         } else if (!strcasecmp(action, "display_editinfo")) {
1222                 display_edit("Room info", "EINF 0", "RINF", "/editinfo", 1);
1223         } else if (!strcasecmp(action, "editinfo")) {
1224                 save_edit("Room info", "EINF 1", 1);
1225         } else if (!strcasecmp(action, "display_editbio")) {
1226                 sprintf(buf, "RBIO %s", WC->wc_username);
1227                 display_edit("Your bio", "NOOP", buf, "editbio", 3);
1228         } else if (!strcasecmp(action, "editbio")) {
1229                 save_edit("Your bio", "EBIO", 0);
1230         } else if (!strcasecmp(action, "confirm_move_msg")) {
1231                 confirm_move_msg();
1232         } else if (!strcasecmp(action, "confirm_delete_room")) {
1233                 confirm_delete_room();
1234         } else if (!strcasecmp(action, "delete_room")) {
1235                 delete_room();
1236         } else if (!strcasecmp(action, "validate")) {
1237                 validate();
1238         } else if (!strcasecmp(action, "display_editpic")) {
1239                 display_graphics_upload("your photo",
1240                                         "UIMG 0|_userpic_",
1241                                         "/editpic");
1242         } else if (!strcasecmp(action, "editpic")) {
1243                 do_graphics_upload("UIMG 1|_userpic_");
1244         } else if (!strcasecmp(action, "display_editroompic")) {
1245                 display_graphics_upload("the graphic for this room",
1246                                         "UIMG 0|_roompic_",
1247                                         "/editroompic");
1248         } else if (!strcasecmp(action, "editroompic")) {
1249                 do_graphics_upload("UIMG 1|_roompic_");
1250         } else if (!strcasecmp(action, "delete_floor")) {
1251                 delete_floor();
1252         } else if (!strcasecmp(action, "rename_floor")) {
1253                 rename_floor();
1254         } else if (!strcasecmp(action, "create_floor")) {
1255                 create_floor();
1256         } else if (!strcasecmp(action, "display_editfloorpic")) {
1257                 sprintf(buf, "UIMG 0|_floorpic_|%s",
1258                         bstr("which_floor"));
1259                 display_graphics_upload("the graphic for this floor",
1260                                         buf,
1261                                         "/editfloorpic");
1262         } else if (!strcasecmp(action, "editfloorpic")) {
1263                 sprintf(buf, "UIMG 1|_floorpic_|%s",
1264                         bstr("which_floor"));
1265                 do_graphics_upload(buf);
1266         } else if (!strcasecmp(action, "display_reg")) {
1267                 display_reg(0);
1268         } else if (!strcasecmp(action, "display_changepw")) {
1269                 display_changepw();
1270         } else if (!strcasecmp(action, "changepw")) {
1271                 changepw();
1272         } else if (!strcasecmp(action, "display_edit_node")) {
1273                 display_edit_node();
1274         } else if (!strcasecmp(action, "edit_node")) {
1275                 edit_node();
1276         } else if (!strcasecmp(action, "display_netconf")) {
1277                 display_netconf();
1278         } else if (!strcasecmp(action, "display_confirm_delete_node")) {
1279                 display_confirm_delete_node();
1280         } else if (!strcasecmp(action, "delete_node")) {
1281                 delete_node();
1282         } else if (!strcasecmp(action, "display_add_node")) {
1283                 display_add_node();
1284         } else if (!strcasecmp(action, "add_node")) {
1285                 add_node();
1286         } else if (!strcasecmp(action, "terminate_session")) {
1287                 slrp_highest();
1288                 terminate_session();
1289         } else if (!strcasecmp(action, "edit_me")) {
1290                 edit_me();
1291         } else if (!strcasecmp(action, "display_siteconfig")) {
1292                 display_siteconfig();
1293         } else if (!strcasecmp(action, "chat_recv")) {
1294                 chat_recv();
1295         } else if (!strcasecmp(action, "chat_send")) {
1296                 chat_send();
1297         } else if (!strcasecmp(action, "siteconfig")) {
1298                 siteconfig();
1299         } else if (!strcasecmp(action, "display_generic")) {
1300                 display_generic();
1301         } else if (!strcasecmp(action, "do_generic")) {
1302                 do_generic();
1303         } else if (!strcasecmp(action, "display_menubar")) {
1304                 display_menubar(1);
1305         } else if (!strcasecmp(action, "output_mimepart")) {
1306                 output_mimepart();
1307         } else if (!strcasecmp(action, "edit_vcard")) {
1308                 edit_vcard();
1309         } else if (!strcasecmp(action, "submit_vcard")) {
1310                 submit_vcard();
1311         } else if (!strcasecmp(action, "select_user_to_edit")) {
1312                 select_user_to_edit(NULL, NULL);
1313         } else if (!strcasecmp(action, "display_edituser")) {
1314                 display_edituser(NULL, 0);
1315         } else if (!strcasecmp(action, "edituser")) {
1316                 edituser();
1317         } else if (!strcasecmp(action, "create_user")) {
1318                 create_user();
1319         } else if (!strcasecmp(action, "changeview")) {
1320                 change_view();
1321         } else if (!strcasecmp(action, "do_stuff_to_msgs")) {
1322                 do_stuff_to_msgs();
1323         } else if (!strcasecmp(action, "change_start_page")) {
1324                 change_start_page();
1325         } else if (!strcasecmp(action, "display_floorconfig")) {
1326                 display_floorconfig(NULL);
1327         } else if (!strcasecmp(action, "toggle_self_service")) {
1328                 toggle_self_service();
1329 #ifdef WEBCIT_WITH_CALENDAR_SERVICE
1330         } else if (!strcasecmp(action, "display_edit_task")) {
1331                 display_edit_task();
1332         } else if (!strcasecmp(action, "save_task")) {
1333                 save_task();
1334         } else if (!strcasecmp(action, "display_edit_event")) {
1335                 display_edit_event();
1336         } else if (!strcasecmp(action, "save_event")) {
1337                 save_event();
1338         } else if (!strcasecmp(action, "respond_to_request")) {
1339                 respond_to_request();
1340         } else if (!strcasecmp(action, "handle_rsvp")) {
1341                 handle_rsvp();
1342 #endif
1343         } else if (!strcasecmp(action, "summary")) {
1344                 summary();
1345         } else if (!strcasecmp(action, "iconbar")) {
1346                 do_iconbar();
1347         } else if (!strcasecmp(action, "display_customize_iconbar")) {
1348                 display_customize_iconbar();
1349         } else if (!strcasecmp(action, "commit_iconbar")) {
1350                 commit_iconbar();
1351         } else if (!strcasecmp(action, "set_room_policy")) {
1352                 set_room_policy();
1353         } else if (!strcasecmp(action, "display_inetconf")) {
1354                 display_inetconf();
1355         } else if (!strcasecmp(action, "save_inetconf")) {
1356                 save_inetconf();
1357         } else if (!strcasecmp(action, "diagnostics")) {
1358                 output_headers(1, 1, 1, 0, 0, 0, 0);
1359
1360                 wprintf("You're in session %d<hr />\n", WC->wc_session);
1361                 wprintf("Command: <br /><PRE>\n");
1362                 escputs(cmd);
1363                 wprintf("</PRE><hr />\n");
1364                 wprintf("Variables: <br /><PRE>\n");
1365                 dump_vars();
1366                 wprintf("</PRE><hr />\n");
1367                 wDumpContent(1);
1368         }
1369         /* When all else fais, display the main menu. */
1370         else {
1371                 display_main_menu();
1372         }
1373
1374 SKIP_ALL_THIS_CRAP:
1375         fflush(stdout);
1376         if (content != NULL) {
1377                 free(content);
1378                 content = NULL;
1379         }
1380         free_urls();
1381         if (WC->upload_length > 0) {
1382                 free(WC->upload);
1383                 WC->upload_length = 0;
1384         }
1385
1386 }