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\n"
 367                         "Server: %s / %s\n", SERVER, serv_info.serv_software
 368                 );
 369                 if (!cache)
 370                         wprintf("Connection: close\n"
 371                                 "Pragma: no-cache\n"
 372                                 "Cache-Control: no-store\n"
 373                         );
 374         }
 375
 376         stuff_to_cookie(cookie, WC->wc_session, WC->wc_username,
 377                         WC->wc_password, WC->wc_roomname);
 378
 379         if (unset_cookies) {
 380                 wprintf("Set-cookie: webcit=%s; path=/\n", unset);
 381         } else {
 382                 wprintf("Set-cookie: webcit=%s; path=/\n", cookie);
 383                 if (server_cookie != NULL) {
 384                         wprintf("%s\n", server_cookie);
 385                 }
 386         }
 387
 388         if (do_htmlhead) {
 389                 /* wprintf("\n"); */
 390                 begin_burst();
 391
 392                 if (refresh30) {
 393                         svprintf("REFRESHTAG", WCS_STRING, "%s",
 394                                 "<meta http-equiv=\"refresh\" content=\"30\" />\n");
 395                 }
 396                 else {
 397                         svprintf("REFRESHTAG", WCS_STRING, "%s",
 398                                 "<meta http-equiv=\"refresh\" content=\"500363689;\" />\n");
 399                 }
 400
 401                 do_template("head");
 402         }
 403
 404         /* ICONBAR */
 405         if (do_htmlhead) {
 406
 407                 if (WC->HaveInstantMessages) {
 408                         wprintf("<div id=\"page_popup\">\n");
 409                         page_popup();
 410                         wprintf("</div>\n");
 411                 }
 412                 if ( (WC->logged_in) && (!unset_cookies) ) {
 413                         wprintf("<div id=\"iconbar\">");
 414                         do_iconbar();
 415                         wprintf("</div>\n");
 416                 }
 417                 if (do_room_banner == 1) {
 418                         wprintf("<div id=\"banner\">\n");
 419                         embed_room_banner(NULL, navbar_default);
 420                         wprintf("</div>\n");
 421                 }
 422         }
 423
 424         if (do_room_banner == 1) {
 425                 wprintf("<div id=\"content\">\n");
 426
 427                 if (strlen(WC->ImportantMessage) > 0) {
 428                         do_template("beginbox_nt");
 429                         wprintf("<SPAN CLASS=\"errormsg\">"
 430                                 "%s</SPAN><br />\n", WC->ImportantMessage);
 431                         do_template("endbox");
 432                         strcpy(WC->ImportantMessage, "");
 433                 }
 434
 435         }
 436 }
 437
 438
 439 /*
 440  * Generic function to do an HTTP redirect.  Easy and fun.
 441  */
 442 void http_redirect(char *whichpage) {
 443         wprintf("HTTP/1.0 302 Moved Temporarily\n");
 444         wprintf("Location: %s\n", whichpage);
 445         wprintf("URI: %s\n", whichpage);
 446         wprintf("Content-type: text/html\n\n");
 447         wprintf("<html><body>\n");
 448         wprintf("you really want to be <A HREF=\"%s\">here</A> now\n",
 449                 whichpage);
 450         wprintf("</body></html>\n");
 451 }
 452
 453
 454
 455 void check_for_instant_messages()
 456 {
 457         char buf[SIZ];
 458
 459         lprintf(9, "Checking for instant messages...\n");
 460         serv_puts("NOOP");
 461         serv_gets(buf);
 462         if (buf[3] == '*') WC->HaveInstantMessages = 1;
 463         lprintf(9, "...done\n");
 464 }
 465
 466
 467
 468
 469 /*
 470  * Output a piece of content to the web browser
 471  */
 472 void http_transmit_thing(char *thing, size_t length, char *content_type,
 473                          int is_static) {
 474         if (is_static) {
 475                 output_headers(0, 0, 0, 0, 0, 0, 1);
 476         }
 477         else {
 478                 output_headers(0, 0, 0, 0, 0, 0, 0);
 479         }
 480         wprintf("Content-type: %s\n"
 481                 "Content-length: %ld\n"
 482                 "Server: %s\n"
 483                 "Connection: close\n"
 484                 "\n",
 485                 content_type,
 486                 (long) length,
 487                 SERVER
 488         );
 489         client_write(thing, (size_t)length);
 490 }
 491
 492
 493
 494
 495 void output_static(char *what)
 496 {
 497         char buf[4096];
 498         FILE *fp;
 499         struct stat statbuf;
 500         off_t bytes;
 501         char *bigbuffer;
 502         char content_type[SIZ];
 503
 504         sprintf(buf, "static/%s", what);
 505         fp = fopen(buf, "rb");
 506         if (fp == NULL) {
 507                 wprintf("HTTP/1.0 404 %s\n", strerror(errno));
 508                 wprintf("Content-Type: text/plain\n");
 509                 wprintf("\n");
 510                 wprintf("Cannot open %s: %s\n", what, strerror(errno));
 511         } else {
 512                 if (!strncasecmp(&what[strlen(what) - 4], ".gif", 4))
 513                         strcpy(content_type, "image/gif");
 514                 else if (!strncasecmp(&what[strlen(what) - 4], ".txt", 4))
 515                         strcpy(content_type, "text/plain");
 516                 else if (!strncasecmp(&what[strlen(what) - 4], ".css", 4))
 517                         strcpy(content_type, "text/css");
 518                 else if (!strncasecmp(&what[strlen(what) - 4], ".jpg", 4))
 519                         strcpy(content_type, "image/jpeg");
 520                 else if (!strncasecmp(&what[strlen(what) - 4], ".png", 4))
 521                         strcpy(content_type, "image/png");
 522                 else if (!strncasecmp(&what[strlen(what) - 4], ".ico", 4))
 523                         strcpy(content_type, "image/x-icon");
 524                 else if (!strncasecmp(&what[strlen(what) - 5], ".html", 5))
 525                         strcpy(content_type, "text/html");
 526                 else if (!strncasecmp(&what[strlen(what) - 4], ".htm", 4))
 527                         strcpy(content_type, "text/html");
 528                 else if (!strncasecmp(&what[strlen(what) - 4], ".wml", 4))
 529                         strcpy(content_type, "text/vnd.wap.wml");
 530                 else if (!strncasecmp(&what[strlen(what) - 5], ".wmls", 5))
 531                         strcpy(content_type, "text/vnd.wap.wmlscript");
 532                 else if (!strncasecmp(&what[strlen(what) - 5], ".wmlc", 5))
 533                         strcpy(content_type, "application/vnd.wap.wmlc");
 534                 else if (!strncasecmp(&what[strlen(what) - 6], ".wmlsc", 6))
 535                         strcpy(content_type, "application/vnd.wap.wmlscriptc");
 536                 else if (!strncasecmp(&what[strlen(what) - 5], ".wbmp", 5))
 537                         strcpy(content_type, "image/vnd.wap.wbmp");
 538                 else if (!strncasecmp(&what[strlen(what) - 3], ".js", 3))
 539                         strcpy(content_type, "text/javascript");
 540                 else
 541                         strcpy(content_type, "application/octet-stream");
 542
 543                 fstat(fileno(fp), &statbuf);
 544                 bytes = statbuf.st_size;
 545                 /* lprintf(3, "Static: %s, (%s; %ld bytes)\n",
 546                         what, content_type, bytes); */
 547                 bigbuffer = malloc(bytes + 2);
 548                 fread(bigbuffer, bytes, 1, fp);
 549                 fclose(fp);
 550
 551                 http_transmit_thing(bigbuffer, (size_t)bytes, content_type, 1);
 552                 free(bigbuffer);
 553         }
 554         if (!strcasecmp(bstr("force_close_session"), "yes")) {
 555                 end_webcit_session();
 556         }
 557 }
 558
 559
 560 /*
 561  * When the browser requests an image file from the Citadel server,
 562  * this function is called to transmit it.
 563  */
 564 void output_image()
 565 {
 566         char buf[SIZ];
 567         char *xferbuf = NULL;
 568         off_t bytes;
 569
 570         serv_printf("OIMG %s|%s", bstr("name"), bstr("parm"));
 571         serv_gets(buf);
 572         if (buf[0] == '2') {
 573                 bytes = extract_long(&buf[4], 0);
 574                 xferbuf = malloc(bytes + 2);
 575
 576                 /* Read it from the server */
 577                 read_server_binary(xferbuf, bytes);
 578                 serv_puts("CLOS");
 579                 serv_gets(buf);
 580
 581                 /* Write it to the browser */
 582                 http_transmit_thing(xferbuf, (size_t)bytes, "image/gif", 0);
 583                 free(xferbuf);
 584
 585         } else {
 586
 587                 /* Instead of an ugly 404, send a 1x1 transparent GIF
 588                  * when there's no such image on the server.
 589                  */
 590                 output_static("blank.gif");
 591
 592                 /*
 593                 wprintf("HTTP/1.0 404 %s\n", &buf[4]);
 594                 output_headers(0, 0, 0, 0, 0, 0, 0);
 595                 wprintf("Content-Type: text/plain\n"
 596                         "\n"
 597                         "Error retrieving image: %s\n",
 598                         &buf[4]
 599                 );
 600                 */
 601
 602         }
 603
 604
 605
 606 }
 607
 608 /*
 609  */
 610 void output_mimepart()
 611 {
 612         char buf[SIZ];
 613         off_t bytes;
 614         char content_type[SIZ];
 615         char *content = NULL;
 616
 617         serv_printf("OPNA %s|%s", bstr("msgnum"), bstr("partnum"));
 618         serv_gets(buf);
 619         if (buf[0] == '2') {
 620                 bytes = extract_long(&buf[4], 0);
 621                 content = malloc(bytes + 2);
 622                 extract(content_type, &buf[4], 3);
 623                 output_headers(0, 0, 0, 0, 0, 0, 0);
 624                 read_server_binary(content, bytes);
 625                 serv_puts("CLOS");
 626                 serv_gets(buf);
 627                 http_transmit_thing(content, bytes, content_type, 0);
 628                 free(content);
 629         } else {
 630                 wprintf("HTTP/1.0 404 %s\n", &buf[4]);
 631                 output_headers(0, 0, 0, 0, 0, 0, 0);
 632                 wprintf("Content-Type: text/plain\n");
 633                 wprintf("\n");
 634                 wprintf("Error retrieving part: %s\n", &buf[4]);
 635         }
 636
 637 }
 638
 639
 640 /*
 641  */
 642 char *load_mimepart(long msgnum, char *partnum)
 643 {
 644         char buf[SIZ];
 645         off_t bytes;
 646         char content_type[SIZ];
 647         char *content;
 648
 649         serv_printf("OPNA %ld|%s", msgnum, partnum);
 650         serv_gets(buf);
 651         if (buf[0] == '2') {
 652                 bytes = extract_long(&buf[4], 0);
 653                 extract(content_type, &buf[4], 3);
 654
 655                 content = malloc(bytes + 2);
 656                 read_server_binary(content, bytes);
 657
 658                 serv_puts("CLOS");
 659                 serv_gets(buf);
 660                 content[bytes] = 0;     /* null terminate for good measure */
 661                 return(content);
 662         }
 663         else {
 664                 return(NULL);
 665         }
 666
 667 }
 668
 669
 670 /*
 671  * Convenience functions to display a page containing only a string
 672  */
 673 void convenience_page(char *titlebarcolor, char *titlebarmsg, char *messagetext)
 674 {
 675         wprintf("HTTP/1.0 200 OK\n");
 676         output_headers(1, 1, 2, 0, 0, 0, 0);
 677         wprintf("<div id=\"banner\">\n");
 678         wprintf("<TABLE WIDTH=100%% BORDER=0 BGCOLOR=\"#%s\"><TR><TD>", titlebarcolor);
 679         wprintf("<SPAN CLASS=\"titlebar\">%s</SPAN>\n", titlebarmsg);
 680         wprintf("</TD></TR></TABLE>\n");
 681         wprintf("</div>\n<div id=\"content\">\n");
 682         escputs(messagetext);
 683
 684         wprintf("<hr />\n");
 685         wDumpContent(1);
 686 }
 687
 688
 689 /*
 690  * Display a blank page.
 691  */
 692 void blank_page(void) {
 693         output_headers(1, 1, 0, 0, 1, 0, 0);
 694         wDumpContent(2);
 695 }
 696
 697
 698 /*
 699  * A template has been requested
 700  */
 701 void url_do_template(void) {
 702         do_template(bstr("template"));
 703 }
 704
 705
 706
 707 /*
 708  * Offer to make any page the user's "start page."
 709  */
 710 void offer_start_page(void) {
 711         wprintf("<A HREF=\"/change_start_page?startpage=");
 712         urlescputs(WC->this_page);
 713         wprintf("\">"
 714                 "<FONT SIZE=-2 COLOR=\"#AAAAAA\">Make this my start page</FONT>"
 715                 "</A>"
 716         );
 717 }
 718
 719
 720 /*
 721  * Change the user's start page
 722  */
 723 void change_start_page(void) {
 724
 725         if (bstr("startpage") == NULL) {
 726                 strcpy(WC->ImportantMessage,
 727                         "startpage set to null");
 728                 display_main_menu();
 729                 return;
 730         }
 731
 732         set_preference("startpage", bstr("startpage"));
 733
 734         output_headers(1, 1, 0, 0, 0, 0, 0);
 735         do_template("newstartpage");
 736         wDumpContent(1);
 737 }
 738
 739
 740
 741
 742 void display_success(char *successmessage)
 743 {
 744         convenience_page("007700", "OK", successmessage);
 745 }
 746
 747
 748
 749 void extract_action(char *actbuf, char *cmdbuf)
 750 {
 751         int i;
 752
 753         strcpy(actbuf, cmdbuf);
 754
 755         /*
 756          * First strip out the http method
 757          */
 758         remove_token(actbuf, 0, ' ');
 759         if (actbuf[0] == ' ') strcpy(actbuf, &actbuf[1]);
 760         if (actbuf[0] == '/') strcpy(actbuf, &actbuf[1]);
 761
 762         /*
 763          * Now kill invalid (for webcit) characters
 764          */
 765         for (i = 0; i < strlen(actbuf); ++i) {
 766                 if (actbuf[i] == ' ') {
 767                         actbuf[i] = 0;
 768                         i = 0;
 769                 }
 770                 if (actbuf[i] == '/') {
 771                         actbuf[i] = 0;
 772                         i = 0;
 773                 }
 774                 if (actbuf[i] == '?') {
 775                         actbuf[i] = 0;
 776                         i = 0;
 777                 }
 778                 if (actbuf[i] == '&') {
 779                         actbuf[i] = 0;
 780                         i = 0;
 781                 }
 782         }
 783 }
 784
 785
 786 void upload_handler(char *name, char *filename, char *partnum, char *disp,
 787                         void *content, char *cbtype, size_t length,
 788                         char *encoding, void *userdata)
 789 {
 790         struct urlcontent *u;
 791
 792         /* Form fields */
 793         if ( (length > 0) && (strlen(cbtype) == 0) ) {
 794                 u = (struct urlcontent *) malloc(sizeof(struct urlcontent));
 795                 u->next = WC->urlstrings;
 796                 WC->urlstrings = u;
 797                 safestrncpy(u->url_key, name, sizeof(u->url_key));
 798                 u->url_data = malloc(length + 1);
 799                 memcpy(u->url_data, content, length);
 800                 u->url_data[length] = 0;
 801         }
 802
 803         /* Uploaded files */
 804         if ( (length > 0) && (strlen(cbtype) > 0) ) {
 805                 WC->upload = malloc(length);
 806                 if (WC->upload != NULL) {
 807                         WC->upload_length = length;
 808                         safestrncpy(WC->upload_filename, filename,
 809                                         sizeof(WC->upload_filename));
 810                         safestrncpy(WC->upload_content_type, cbtype,
 811                                         sizeof(WC->upload_content_type));
 812                         memcpy(WC->upload, content, length);
 813                 }
 814                 else {
 815                         lprintf(3, "malloc() failed: %s\n", strerror(errno));
 816                 }
 817         }
 818
 819 }
 820
 821
 822
 823
 824 /*
 825  * Entry point for WebCit transaction
 826  */
 827 void session_loop(struct httprequest *req)
 828 {
 829         char cmd[SIZ];
 830         char method[SIZ];
 831         char action[SIZ];
 832         char buf[SIZ];
 833         int a, b;
 834         int ContentLength = 0;
 835         int BytesRead = 0;
 836         char ContentType[512];
 837         char *content = NULL;
 838         char *content_end = NULL;
 839         struct httprequest *hptr;
 840         char browser_host[SIZ];
 841         char user_agent[SIZ];
 842         int body_start = 0;
 843
 844         /* We stuff these with the values coming from the client cookies,
 845          * so we can use them to reconnect a timed out session if we have to.
 846          */
 847         char c_username[SIZ];
 848         char c_password[SIZ];
 849         char c_roomname[SIZ];
 850         char c_httpauth_string[SIZ];
 851         char c_httpauth_user[SIZ];
 852         char c_httpauth_pass[SIZ];
 853         char cookie[SIZ];
 854
 855         strcpy(c_username, "");
 856         strcpy(c_password, "");
 857         strcpy(c_roomname, "");
 858         strcpy(c_httpauth_string, "");
 859         strcpy(c_httpauth_user, DEFAULT_HTTPAUTH_USER);
 860         strcpy(c_httpauth_pass, DEFAULT_HTTPAUTH_PASS);
 861
 862         WC->upload_length = 0;
 863         WC->upload = NULL;
 864         WC->vars = NULL;
 865
 866         WC->is_wap = 0;
 867
 868         hptr = req;
 869         if (hptr == NULL) return;
 870
 871         strcpy(cmd, hptr->line);
 872         hptr = hptr->next;
 873         extract_token(method, cmd, 0, ' ');
 874         extract_action(action, cmd);
 875
 876         while (hptr != NULL) {
 877                 strcpy(buf, hptr->line);
 878                 hptr = hptr->next;
 879
 880                 if (!strncasecmp(buf, "Cookie: webcit=", 15)) {
 881                         safestrncpy(cookie, &buf[15], sizeof cookie);
 882                         cookie_to_stuff(cookie, NULL,
 883                                       c_username, c_password, c_roomname);
 884                 }
 885                 else if (!strncasecmp(buf, "Authorization: Basic ", 21)) {
 886                         CtdlDecodeBase64(c_httpauth_string, &buf[21], strlen(&buf[21]));
 887                         extract_token(c_httpauth_user, c_httpauth_string, 0, ':');
 888                         extract_token(c_httpauth_pass, c_httpauth_string, 1, ':');
 889                 }
 890                 else if (!strncasecmp(buf, "Content-length: ", 16)) {
 891                         ContentLength = atoi(&buf[16]);
 892                 }
 893                 else if (!strncasecmp(buf, "Content-type: ", 14)) {
 894                         safestrncpy(ContentType, &buf[14], sizeof ContentType);
 895                 }
 896                 else if (!strncasecmp(buf, "User-agent: ", 12)) {
 897                         safestrncpy(user_agent, &buf[12], sizeof user_agent);
 898                 }
 899                 else if (!strncasecmp(buf, "Host: ", 6)) {
 900                         safestrncpy(WC->http_host, &buf[6], sizeof WC->http_host);
 901                 }
 902                 /* Only WAP gateways explicitly name this content-type */
 903                 else if (strstr(buf, "text/vnd.wap.wml")) {
 904                         WC->is_wap = 1;
 905                 }
 906         }
 907
 908         if (ContentLength > 0) {
 909                 content = malloc(ContentLength + SIZ);
 910                 memset(content, 0, ContentLength + SIZ);
 911                 sprintf(content, "Content-type: %s\n"
 912                                 "Content-length: %d\n\n",
 913                                 ContentType, ContentLength);
 914                 body_start = strlen(content);
 915
 916                 /* Be daring and read it all at once. */
 917                 client_read(WC->http_sock, &content[BytesRead+body_start],
 918                         ContentLength);
 919
 920                 if (!strncasecmp(ContentType,
 921                               "application/x-www-form-urlencoded", 33)) {
 922                         addurls(&content[body_start]);
 923                 } else if (!strncasecmp(ContentType, "multipart", 9)) {
 924                         content_end = content + ContentLength + body_start;
 925                         mime_parser(content, content_end, *upload_handler,
 926                                         NULL, NULL, NULL, 0);
 927                 }
 928         } else {
 929                 content = NULL;
 930         }
 931
 932         /* make a note of where we are in case the user wants to save it */
 933         safestrncpy(WC->this_page, cmd, sizeof(WC->this_page));
 934         remove_token(WC->this_page, 2, ' ');
 935         remove_token(WC->this_page, 0, ' ');
 936
 937         /* If there are variables in the URL, we must grab them now */
 938         for (a = 0; a < strlen(cmd); ++a) {
 939                 if ((cmd[a] == '?') || (cmd[a] == '&')) {
 940                         for (b = a; b < strlen(cmd); ++b)
 941                                 if (isspace(cmd[b]))
 942                                         cmd[b] = 0;
 943                         addurls(&cmd[a + 1]);
 944                         cmd[a] = 0;
 945                 }
 946         }
 947
 948         /* Static content can be sent without connecting to Citadel. */
 949         if (!strcasecmp(action, "static")) {
 950                 strcpy(buf, &cmd[12]);
 951                 for (a = 0; a < strlen(buf); ++a)
 952                         if (isspace(buf[a]))
 953                                 buf[a] = 0;
 954                 output_static(buf);
 955                 goto SKIP_ALL_THIS_CRAP;        /* Don't try to connect */
 956         }
 957
 958         /*
 959          * If we're not connected to a Citadel server, try to hook up the
 960          * connection now.
 961          */
 962         if (!WC->connected) {
 963                 if (!strcasecmp(ctdlhost, "uds")) {
 964                         /* unix domain socket */
 965                         sprintf(buf, "%s/citadel.socket", ctdlport);
 966                         WC->serv_sock = uds_connectsock(buf);
 967                 }
 968                 else {
 969                         /* tcp socket */
 970                         WC->serv_sock = tcp_connectsock(ctdlhost, ctdlport);
 971                 }
 972
 973                 if (WC->serv_sock < 0) {
 974                         do_logout();
 975                         goto SKIP_ALL_THIS_CRAP;
 976                 }
 977                 else {
 978                         WC->connected = 1;
 979                         serv_gets(buf); /* get the server welcome message */
 980                         locate_host(browser_host, WC->http_sock);
 981                         get_serv_info(browser_host, user_agent);
 982                         if (serv_info.serv_rev_level < MINIMUM_CIT_VERSION) {
 983                                 wprintf("You are connected to a Citadel "
 984                                         "server running Citadel %d.%02d;\nin "
 985                                         "order to run this version of WebCit "
 986                                         "you must also have Citadel %d.%02d or"
 987                                         " newer.\n\n\n",
 988                                                 serv_info.serv_rev_level / 100,
 989                                                 serv_info.serv_rev_level % 100,
 990                                                 MINIMUM_CIT_VERSION / 100,
 991                                                 MINIMUM_CIT_VERSION % 100
 992                                         );
 993                                 end_webcit_session();
 994                                 goto SKIP_ALL_THIS_CRAP;
 995                         }
 996                 }
 997         }
 998
 999         /*
1000          * Functions which can be performed without logging in
1001          */
1002         if (!strcasecmp(action, "listsub")) {
1003                 do_listsub();
1004                 goto SKIP_ALL_THIS_CRAP;
1005         }
1006 #ifdef WEBCIT_WITH_CALENDAR_SERVICE
1007         if (!strcasecmp(action, "freebusy")) {
1008                 do_freebusy(cmd);
1009                 goto SKIP_ALL_THIS_CRAP;
1010         }
1011 #endif
1012
1013         /*
1014          * If we're not logged in, but we have HTTP Authentication data,
1015          * try logging in to Citadel using that.
1016          */
1017         if ((!WC->logged_in)
1018            && (strlen(c_httpauth_user) > 0)
1019            && (strlen(c_httpauth_pass) > 0)) {
1020                 serv_printf("USER %s", c_httpauth_user);
1021                 serv_gets(buf);
1022                 if (buf[0] == '3') {
1023                         serv_printf("PASS %s", c_httpauth_pass);
1024                         serv_gets(buf);
1025                         if (buf[0] == '2') {
1026                                 become_logged_in(c_httpauth_user,
1027                                                 c_httpauth_pass, buf);
1028                                 strcpy(WC->httpauth_user, c_httpauth_user);
1029                                 strcpy(WC->httpauth_pass, c_httpauth_pass);
1030                         }
1031                 }
1032         }
1033
1034         /*
1035          * The GroupDAV stuff relies on HTTP authentication instead of
1036          * our session's authentication.
1037          */
1038         if (!strncasecmp(action, "groupdav", 8)) {
1039                 groupdav_main(req, ContentType, /* do GroupDAV methods */
1040                         ContentLength, content+body_start);
1041                 if (!WC->logged_in) {
1042                         WC->killthis = 1;       /* If not logged in, don't */
1043                 }                               /* keep the session active */
1044                 goto SKIP_ALL_THIS_CRAP;
1045         }
1046
1047
1048         /*
1049          * If this isn't a GroupDAV session, it's an ordinary browser
1050          * connecting to the user interface.  Only allow GET and POST
1051          * methods.
1052          */
1053         if ((strcasecmp(method, "GET")) && (strcasecmp(method, "POST"))) {
1054                 wprintf("HTTP/1.1 405 Method Not Allowed\r\n");
1055                 groupdav_common_headers();
1056                 wprintf("Content-Length: 0\r\n\r\n");
1057                 goto SKIP_ALL_THIS_CRAP;
1058         }
1059
1060         /*
1061          * If we're not logged in, but we have username and password cookies
1062          * supplied by the browser, try using them to log in.
1063          */
1064         if ((!WC->logged_in)
1065            && (strlen(c_username) > 0)
1066            && (strlen(c_password) > 0)) {
1067                 serv_printf("USER %s", c_username);
1068                 serv_gets(buf);
1069                 if (buf[0] == '3') {
1070                         serv_printf("PASS %s", c_password);
1071                         serv_gets(buf);
1072                         if (buf[0] == '2') {
1073                                 become_logged_in(c_username, c_password, buf);
1074                         }
1075                 }
1076         }
1077         /*
1078          * If we don't have a current room, but a cookie specifying the
1079          * current room is supplied, make an effort to go there.
1080          */
1081         if ((strlen(WC->wc_roomname) == 0) && (strlen(c_roomname) > 0)) {
1082                 serv_printf("GOTO %s", c_roomname);
1083                 serv_gets(buf);
1084                 if (buf[0] == '2') {
1085                         strcpy(WC->wc_roomname, c_roomname);
1086                 }
1087         }
1088
1089         /*
1090          * If there are instant messages waiting, retrieve them for display.
1091          */
1092         check_for_instant_messages();
1093
1094         if (!strcasecmp(action, "image")) {
1095                 output_image();
1096
1097         /*
1098          * All functions handled below this point ... make sure we log in
1099          * before doing anything else!
1100          */
1101         } else if ((!WC->logged_in) && (!strcasecmp(action, "login"))) {
1102                 do_login();
1103         } else if (!WC->logged_in) {
1104                 display_login(NULL);
1105         }
1106
1107         /*
1108          * Various commands...
1109          */
1110
1111         else if (!strcasecmp(action, "do_welcome")) {
1112                 do_welcome();
1113         } else if (!strcasecmp(action, "blank")) {
1114                 blank_page();
1115         } else if (!strcasecmp(action, "do_template")) {
1116                 url_do_template();
1117         } else if (!strcasecmp(action, "display_aide_menu")) {
1118                 display_aide_menu();
1119         } else if (!strcasecmp(action, "display_main_menu")) {
1120                 display_main_menu();
1121         } else if (!strcasecmp(action, "whobbs")) {
1122                 whobbs();
1123         } else if (!strcasecmp(action, "knrooms")) {
1124                 knrooms();
1125         } else if (!strcasecmp(action, "gotonext")) {
1126                 slrp_highest();
1127                 gotonext();
1128         } else if (!strcasecmp(action, "skip")) {
1129                 gotonext();
1130         } else if (!strcasecmp(action, "ungoto")) {
1131                 ungoto();
1132         } else if (!strcasecmp(action, "dotgoto")) {
1133                 slrp_highest();
1134                 smart_goto(bstr("room"));
1135         } else if (!strcasecmp(action, "dotskip")) {
1136                 smart_goto(bstr("room"));
1137         } else if (!strcasecmp(action, "termquit")) {
1138                 do_logout();
1139         } else if (!strcasecmp(action, "readnew")) {
1140                 readloop("readnew");
1141         } else if (!strcasecmp(action, "readold")) {
1142                 readloop("readold");
1143         } else if (!strcasecmp(action, "readfwd")) {
1144                 readloop("readfwd");
1145         } else if (!strcasecmp(action, "headers")) {
1146                 readloop("headers");
1147         } else if (!strcasecmp(action, "display_enter")) {
1148                 display_enter();
1149         } else if (!strcasecmp(action, "post")) {
1150                 post_message();
1151         } else if (!strcasecmp(action, "move_msg")) {
1152                 move_msg();
1153         } else if (!strcasecmp(action, "delete_msg")) {
1154                 delete_msg();
1155         } else if (!strcasecmp(action, "userlist")) {
1156                 userlist();
1157         } else if (!strcasecmp(action, "showuser")) {
1158                 showuser();
1159         } else if (!strcasecmp(action, "display_page")) {
1160                 display_page();
1161         } else if (!strcasecmp(action, "page_user")) {
1162                 page_user();
1163         } else if (!strcasecmp(action, "chat")) {
1164                 do_chat();
1165         } else if (!strcasecmp(action, "display_private")) {
1166                 display_private("", 0);
1167         } else if (!strcasecmp(action, "goto_private")) {
1168                 goto_private();
1169         } else if (!strcasecmp(action, "zapped_list")) {
1170                 zapped_list();
1171         } else if (!strcasecmp(action, "display_zap")) {
1172                 display_zap();
1173         } else if (!strcasecmp(action, "zap")) {
1174                 zap();
1175         } else if (!strcasecmp(action, "display_entroom")) {
1176                 display_entroom();
1177         } else if (!strcasecmp(action, "entroom")) {
1178                 entroom();
1179         } else if (!strcasecmp(action, "display_whok")) {
1180                 display_whok();
1181         } else if (!strcasecmp(action, "do_invt_kick")) {
1182                 do_invt_kick();
1183         } else if (!strcasecmp(action, "display_editroom")) {
1184                 display_editroom();
1185         } else if (!strcasecmp(action, "netedit")) {
1186                 netedit();
1187         } else if (!strcasecmp(action, "editroom")) {
1188                 editroom();
1189         } else if (!strcasecmp(action, "display_editinfo")) {
1190                 display_edit("Room info", "EINF 0", "RINF", "/editinfo", 1);
1191         } else if (!strcasecmp(action, "editinfo")) {
1192                 save_edit("Room info", "EINF 1", 1);
1193         } else if (!strcasecmp(action, "display_editbio")) {
1194                 sprintf(buf, "RBIO %s", WC->wc_username);
1195                 display_edit("Your bio", "NOOP", buf, "editbio", 3);
1196         } else if (!strcasecmp(action, "editbio")) {
1197                 save_edit("Your bio", "EBIO", 0);
1198         } else if (!strcasecmp(action, "confirm_move_msg")) {
1199                 confirm_move_msg();
1200         } else if (!strcasecmp(action, "confirm_delete_room")) {
1201                 confirm_delete_room();
1202         } else if (!strcasecmp(action, "delete_room")) {
1203                 delete_room();
1204         } else if (!strcasecmp(action, "validate")) {
1205                 validate();
1206         } else if (!strcasecmp(action, "display_editpic")) {
1207                 display_graphics_upload("your photo",
1208                                         "UIMG 0|_userpic_",
1209                                         "/editpic");
1210         } else if (!strcasecmp(action, "editpic")) {
1211                 do_graphics_upload("UIMG 1|_userpic_");
1212         } else if (!strcasecmp(action, "display_editroompic")) {
1213                 display_graphics_upload("the graphic for this room",
1214                                         "UIMG 0|_roompic_",
1215                                         "/editroompic");
1216         } else if (!strcasecmp(action, "editroompic")) {
1217                 do_graphics_upload("UIMG 1|_roompic_");
1218         } else if (!strcasecmp(action, "delete_floor")) {
1219                 delete_floor();
1220         } else if (!strcasecmp(action, "rename_floor")) {
1221                 rename_floor();
1222         } else if (!strcasecmp(action, "create_floor")) {
1223                 create_floor();
1224         } else if (!strcasecmp(action, "display_editfloorpic")) {
1225                 sprintf(buf, "UIMG 0|_floorpic_|%s",
1226                         bstr("which_floor"));
1227                 display_graphics_upload("the graphic for this floor",
1228                                         buf,
1229                                         "/editfloorpic");
1230         } else if (!strcasecmp(action, "editfloorpic")) {
1231                 sprintf(buf, "UIMG 1|_floorpic_|%s",
1232                         bstr("which_floor"));
1233                 do_graphics_upload(buf);
1234         } else if (!strcasecmp(action, "display_reg")) {
1235                 display_reg(0);
1236         } else if (!strcasecmp(action, "display_changepw")) {
1237                 display_changepw();
1238         } else if (!strcasecmp(action, "changepw")) {
1239                 changepw();
1240         } else if (!strcasecmp(action, "display_edit_node")) {
1241                 display_edit_node();
1242         } else if (!strcasecmp(action, "edit_node")) {
1243                 edit_node();
1244         } else if (!strcasecmp(action, "display_netconf")) {
1245                 display_netconf();
1246         } else if (!strcasecmp(action, "display_confirm_delete_node")) {
1247                 display_confirm_delete_node();
1248         } else if (!strcasecmp(action, "delete_node")) {
1249                 delete_node();
1250         } else if (!strcasecmp(action, "display_add_node")) {
1251                 display_add_node();
1252         } else if (!strcasecmp(action, "add_node")) {
1253                 add_node();
1254         } else if (!strcasecmp(action, "terminate_session")) {
1255                 slrp_highest();
1256                 terminate_session();
1257         } else if (!strcasecmp(action, "edit_me")) {
1258                 edit_me();
1259         } else if (!strcasecmp(action, "display_siteconfig")) {
1260                 display_siteconfig();
1261         } else if (!strcasecmp(action, "chat_recv")) {
1262                 chat_recv();
1263         } else if (!strcasecmp(action, "chat_send")) {
1264                 chat_send();
1265         } else if (!strcasecmp(action, "siteconfig")) {
1266                 siteconfig();
1267         } else if (!strcasecmp(action, "display_generic")) {
1268                 display_generic();
1269         } else if (!strcasecmp(action, "do_generic")) {
1270                 do_generic();
1271         } else if (!strcasecmp(action, "display_menubar")) {
1272                 display_menubar(1);
1273         } else if (!strcasecmp(action, "output_mimepart")) {
1274                 output_mimepart();
1275         } else if (!strcasecmp(action, "edit_vcard")) {
1276                 edit_vcard();
1277         } else if (!strcasecmp(action, "submit_vcard")) {
1278                 submit_vcard();
1279         } else if (!strcasecmp(action, "select_user_to_edit")) {
1280                 select_user_to_edit(NULL, NULL);
1281         } else if (!strcasecmp(action, "display_edituser")) {
1282                 display_edituser(NULL, 0);
1283         } else if (!strcasecmp(action, "edituser")) {
1284                 edituser();
1285         } else if (!strcasecmp(action, "create_user")) {
1286                 create_user();
1287         } else if (!strcasecmp(action, "changeview")) {
1288                 change_view();
1289         } else if (!strcasecmp(action, "do_stuff_to_msgs")) {
1290                 do_stuff_to_msgs();
1291         } else if (!strcasecmp(action, "change_start_page")) {
1292                 change_start_page();
1293         } else if (!strcasecmp(action, "display_floorconfig")) {
1294                 display_floorconfig(NULL);
1295         } else if (!strcasecmp(action, "toggle_self_service")) {
1296                 toggle_self_service();
1297 #ifdef WEBCIT_WITH_CALENDAR_SERVICE
1298         } else if (!strcasecmp(action, "display_edit_task")) {
1299                 display_edit_task();
1300         } else if (!strcasecmp(action, "save_task")) {
1301                 save_task();
1302         } else if (!strcasecmp(action, "display_edit_event")) {
1303                 display_edit_event();
1304         } else if (!strcasecmp(action, "save_event")) {
1305                 save_event();
1306         } else if (!strcasecmp(action, "respond_to_request")) {
1307                 respond_to_request();
1308         } else if (!strcasecmp(action, "handle_rsvp")) {
1309                 handle_rsvp();
1310 #endif
1311         } else if (!strcasecmp(action, "summary")) {
1312                 summary();
1313         } else if (!strcasecmp(action, "iconbar")) {
1314                 do_iconbar();
1315         } else if (!strcasecmp(action, "display_customize_iconbar")) {
1316                 display_customize_iconbar();
1317         } else if (!strcasecmp(action, "commit_iconbar")) {
1318                 commit_iconbar();
1319         } else if (!strcasecmp(action, "set_room_policy")) {
1320                 set_room_policy();
1321         } else if (!strcasecmp(action, "display_inetconf")) {
1322                 display_inetconf();
1323         } else if (!strcasecmp(action, "save_inetconf")) {
1324                 save_inetconf();
1325         } else if (!strcasecmp(action, "diagnostics")) {
1326                 output_headers(1, 1, 1, 0, 0, 0, 0);
1327
1328                 wprintf("You're in session %d<hr />\n", WC->wc_session);
1329                 wprintf("Command: <br /><PRE>\n");
1330                 escputs(cmd);
1331                 wprintf("</PRE><hr />\n");
1332                 wprintf("Variables: <br /><PRE>\n");
1333                 dump_vars();
1334                 wprintf("</PRE><hr />\n");
1335                 wDumpContent(1);
1336         }
1337         /* When all else fais, display the main menu. */
1338         else {
1339                 display_main_menu();
1340         }
1341
1342 SKIP_ALL_THIS_CRAP:
1343         fflush(stdout);
1344         if (content != NULL) {
1345                 free(content);
1346                 content = NULL;
1347         }
1348         free_urls();
1349         if (WC->upload_length > 0) {
1350                 free(WC->upload);
1351                 WC->upload_length = 0;
1352         }
1353
1354 }