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 "webcit.h"
  11 #include "groupdav.h"
  12 #include "webserver.h"
  13 #include "mime_parser.h"
  14
  15 /*
  16  * Subdirectories from which the client may request static content
  17  */
  18 char *static_content_dirs[] = {
  19         "static",
  20         "tiny_mce"
  21 };
  22
  23 /*
  24  * String to unset the cookie.
  25  * Any date "in the past" will work, so I chose my birthday, right down to
  26  * the exact minute.  :)
  27  */
  28 static char *unset = "; expires=28-May-1971 18:10:00 GMT";
  29
  30 void unescape_input(char *buf)
  31 {
  32         int a, b;
  33         char hex[3];
  34
  35         while ((isspace(buf[strlen(buf) - 1])) && (strlen(buf) > 0))
  36                 buf[strlen(buf) - 1] = 0;
  37
  38         for (a = 0; a < strlen(buf); ++a) {
  39                 if (buf[a] == '+')
  40                         buf[a] = ' ';
  41                 if (buf[a] == '%') {
  42                         hex[0] = buf[a + 1];
  43                         hex[1] = buf[a + 2];
  44                         hex[2] = 0;
  45                         b = 0;
  46                         sscanf(hex, "%02x", &b);
  47                         buf[a] = (char) b;
  48                         strcpy(&buf[a + 1], &buf[a + 3]);
  49                 }
  50         }
  51
  52 }
  53
  54
  55 void addurls(char *url)
  56 {
  57         char *up, *ptr;
  58         char buf[SIZ];
  59         int a, b;
  60         struct urlcontent *u;
  61
  62         up = url;
  63         while (strlen(up) > 0) {
  64
  65                 /* locate the = sign */
  66                 safestrncpy(buf, up, sizeof buf);
  67                 b = (-1);
  68                 for (a = 255; a >= 0; --a)
  69                         if (buf[a] == '=')
  70                                 b = a;
  71                 if (b < 0)
  72                         return;
  73                 buf[b] = 0;
  74
  75                 u = (struct urlcontent *) malloc(sizeof(struct urlcontent));
  76                 u->next = WC->urlstrings;
  77                 WC->urlstrings = u;
  78                 safestrncpy(u->url_key, buf, sizeof u->url_key);
  79
  80                 /* now chop that part off */
  81                 for (a = 0; a <= b; ++a)
  82                         ++up;
  83
  84                 /* locate "&" and "?" delimiters */
  85                 ptr = up;
  86                 b = strlen(up);
  87                 for (a = 0; a < strlen(up); ++a) {
  88                         if ( (ptr[0] == '&') || (ptr[0] == '?') ) {
  89                                 b = a;
  90                                 break;
  91                         }
  92                         ++ptr;
  93                 }
  94                 ptr = up;
  95                 for (a = 0; a < b; ++a)
  96                         ++ptr;
  97                 strcpy(ptr, "");
  98
  99                 u->url_data = malloc(strlen(up) + 2);
 100                 safestrncpy(u->url_data, up, strlen(up) + 1);
 101                 u->url_data[b] = 0;
 102                 unescape_input(u->url_data);
 103                 up = ptr;
 104                 ++up;
 105         }
 106 }
 107
 108 void free_urls(void)
 109 {
 110         struct urlcontent *u;
 111
 112         while (WC->urlstrings != NULL) {
 113                 free(WC->urlstrings->url_data);
 114                 u = WC->urlstrings->next;
 115                 free(WC->urlstrings);
 116                 WC->urlstrings = u;
 117         }
 118 }
 119
 120 /*
 121  * Diagnostic function to display the contents of all variables
 122  */
 123 void dump_vars(void)
 124 {
 125         struct urlcontent *u;
 126
 127         for (u = WC->urlstrings; u != NULL; u = u->next) {
 128                 wprintf("%38s = %s\n", u->url_key, u->url_data);
 129         }
 130 }
 131
 132 char *bstr(char *key)
 133 {
 134         struct urlcontent *u;
 135
 136         for (u = WC->urlstrings; u != NULL; u = u->next) {
 137                 if (!strcasecmp(u->url_key, key))
 138                         return (u->url_data);
 139         }
 140         return ("");
 141 }
 142
 143
 144 void wprintf(const char *format,...)
 145 {
 146         va_list arg_ptr;
 147         char wbuf[4096];
 148
 149         va_start(arg_ptr, format);
 150         vsnprintf(wbuf, sizeof wbuf, format, arg_ptr);
 151         va_end(arg_ptr);
 152
 153         client_write(wbuf, strlen(wbuf));
 154 }
 155
 156
 157 /*
 158  * wDumpContent() wraps up an HTTP session, closes tags, etc.
 159  *
 160  * print_standard_html_footer should be set to 0 to transmit only, 1 to
 161  * append the main menu and closing tags, or 2 to
 162  * append the closing tags only.
 163  */
 164 void wDumpContent(int print_standard_html_footer)
 165 {
 166         if (print_standard_html_footer) {
 167                 wprintf("</div>\n");    /* end of "text" div */
 168                 do_template("trailing");
 169         }
 170
 171         /* If we've been saving it all up for one big output burst,
 172          * go ahead and do that now.
 173          */
 174         end_burst();
 175 }
 176
 177
 178 /*
 179  * Copy a string, escaping characters which have meaning in HTML.  If
 180  * nbsp is nonzero, spaces are converted to non-breaking spaces.
 181  */
 182 void stresc(char *target, char *strbuf, int nbsp, int nolinebreaks)
 183 {
 184         int a;
 185         strcpy(target, "");
 186
 187         for (a = 0; a < strlen(strbuf); ++a) {
 188                 if (strbuf[a] == '<')
 189                         strcat(target, "&lt;");
 190                 else if (strbuf[a] == '>')
 191                         strcat(target, "&gt;");
 192                 else if (strbuf[a] == '&')
 193                         strcat(target, "&amp;");
 194                 else if (strbuf[a] == '\"')
 195                         strcat(target, "&quot;");
 196                 else if (strbuf[a] == '\'')
 197                         strcat(target, "&#39;");
 198                 else if (strbuf[a] == LB)
 199                         strcat(target, "<");
 200                 else if (strbuf[a] == RB)
 201                         strcat(target, ">");
 202                 else if (strbuf[a] == QU)
 203                         strcat(target, "\"");
 204                 else if ((strbuf[a] == 32) && (nbsp == 1))
 205                         strcat(target, "&nbsp;");
 206                 else if ((strbuf[a] == '\n') && (nolinebreaks))
 207                         strcat(target, "");     /* nothing */
 208                 else if ((strbuf[a] == '\r') && (nolinebreaks))
 209                         strcat(target, "");     /* nothing */
 210                 else
 211                         strncat(target, &strbuf[a], 1);
 212         }
 213 }
 214
 215 void escputs1(char *strbuf, int nbsp, int nolinebreaks)
 216 {
 217         char *buf;
 218
 219         if (strbuf == NULL) return;
 220         buf = malloc( (3 * strlen(strbuf)) + SIZ );
 221         stresc(buf, strbuf, nbsp, nolinebreaks);
 222         wprintf("%s", buf);
 223         free(buf);
 224 }
 225
 226 void escputs(char *strbuf)
 227 {
 228         escputs1(strbuf, 0, 0);
 229 }
 230
 231 /*
 232  * Escape a string for feeding out as a URL.
 233  * Returns a pointer to a buffer that must be freed by the caller!
 234  */
 235 void urlesc(char *outbuf, char *strbuf)
 236 {
 237         int a, b, c;
 238         char *ec = " #&;`'|*?-~<>^()[]{}$\"\\";
 239
 240         strcpy(outbuf, "");
 241
 242         for (a = 0; a < strlen(strbuf); ++a) {
 243                 c = 0;
 244                 for (b = 0; b < strlen(ec); ++b) {
 245                         if (strbuf[a] == ec[b])
 246                                 c = 1;
 247                 }
 248                 b = strlen(outbuf);
 249                 if (c == 1)
 250                         sprintf(&outbuf[b], "%%%02x", strbuf[a]);
 251                 else
 252                         sprintf(&outbuf[b], "%c", strbuf[a]);
 253         }
 254 }
 255
 256 void urlescputs(char *strbuf)
 257 {
 258         char outbuf[SIZ];
 259
 260         urlesc(outbuf, strbuf);
 261         wprintf("%s", outbuf);
 262 }
 263
 264
 265 /*
 266  * Copy a string, escaping characters for JavaScript strings.
 267  */
 268 void jsesc(char *target, char *strbuf)
 269 {
 270         int a;
 271         strcpy(target, "");
 272
 273         for (a = 0; a < strlen(strbuf); ++a) {
 274                 if (strbuf[a] == '<')
 275                         strcat(target, "[");
 276                 else if (strbuf[a] == '>')
 277                         strcat(target, "]");
 278                 else if (strbuf[a] == '\"')
 279                         strcat(target, "&quot;");
 280                 else if (strbuf[a] == '&')
 281                         strcat(target, "&amp;;");
 282                 else if (strbuf[a] == '\'')
 283                         strcat(target, "\\'");
 284                 else {
 285                         strncat(target, &strbuf[a], 1);
 286                 }
 287         }
 288 }
 289
 290 void jsescputs(char *strbuf)
 291 {
 292         char outbuf[SIZ];
 293
 294         jsesc(outbuf, strbuf);
 295         wprintf("%s", outbuf);
 296 }
 297
 298 /*
 299  * Copy a string, escaping characters for message text hold
 300  */
 301 void msgesc(char *target, char *strbuf)
 302 {
 303         int a;
 304         strcpy(target, "");
 305
 306         for (a = 0; a < strlen(strbuf); ++a) {
 307                 if (strbuf[a] == '\n')
 308                         strcat(target, " ");
 309                 else if (strbuf[a] == '\r')
 310                         strcat(target, " ");
 311                 else if (strbuf[a] == '\'')
 312                         strcat(target, "&#39;");
 313                 else {
 314                         strncat(target, &strbuf[a], 1);
 315                 }
 316         }
 317 }
 318
 319 void msgescputs(char *strbuf) {
 320         char *outbuf;
 321
 322         if (strbuf == NULL) return;
 323         outbuf = malloc( (3 * strlen(strbuf)) + SIZ);
 324         msgesc(outbuf, strbuf);
 325         wprintf("%s", outbuf);
 326         free(outbuf);
 327 }
 328
 329
 330
 331
 332 /*
 333  * Output all that important stuff that the browser will want to see
 334  */
 335 void output_headers(    int do_httpheaders,     /* 1 = output HTTP headers                          */
 336                         int do_htmlhead,        /* 1 = output HTML <head> section and <body> opener */
 337
 338                         int do_room_banner,     /* 0=no, 1=yes,                                     */
 339                                                 /* 2 = I'm going to embed my own, so don't open the */
 340                                                 /*     <div id="content"> either.                   */
 341
 342                         int unset_cookies,      /* 1 = session is terminating, so unset the cookies */
 343                         int suppress_check,     /* 1 = suppress check for instant messages          */
 344                         int cache               /* 1 = allow browser to cache this page             */
 345 ) {
 346         char cookie[SIZ];
 347         char httpnow[SIZ];
 348
 349         wprintf("HTTP/1.1 200 OK\n");
 350         httpdate(httpnow, time(NULL));
 351
 352         if (do_httpheaders) {
 353                 wprintf("Content-type: text/html; charset=utf-8\r\n"
 354                         "Server: %s / %s\n"
 355                         "Connection: close\r\n",
 356                         SERVER, serv_info.serv_software
 357                 );
 358         }
 359
 360         if (cache) {
 361                 wprintf("Pragma: public\r\n"
 362                         "Cache-Control: max-age=3600, must-revalidate\r\n"
 363                         "Last-modified: %s\r\n",
 364                         httpnow
 365                 );
 366         }
 367         else {
 368                 wprintf("Pragma: no-cache\r\n"
 369                         "Cache-Control: no-store\r\n"
 370                 );
 371         }
 372
 373         stuff_to_cookie(cookie, WC->wc_session, WC->wc_username,
 374                         WC->wc_password, WC->wc_roomname);
 375
 376         if (unset_cookies) {
 377                 wprintf("Set-cookie: webcit=%s; path=/\r\n", unset);
 378         } else {
 379                 wprintf("Set-cookie: webcit=%s; path=/\r\n", cookie);
 380                 if (server_cookie != NULL) {
 381                         wprintf("%s\n", server_cookie);
 382                 }
 383         }
 384
 385         if (do_htmlhead) {
 386                 begin_burst();
 387                 do_template("head");
 388         }
 389
 390         /* ICONBAR */
 391         if (do_htmlhead) {
 392
 393                 /* check for instant messages (these display in a new window) */
 394                 page_popup();
 395
 396                 /* check for ImportantMessages (these display in a div overlaying the main screen) */
 397                 if (strlen(WC->ImportantMessage) > 0) {
 398                         wprintf("<div id=\"important_message\">\n");
 399                         wprintf("<SPAN CLASS=\"imsg\">"
 400                                 "%s</SPAN><br />\n", WC->ImportantMessage);
 401                         wprintf("</div>\n");
 402                         wprintf("<script type=\"text/javascript\">\n"
 403                                 "        setTimeout('hide_imsg_popup()', 3000); \n"
 404                                 "</script>\n");
 405                         safestrncpy(WC->ImportantMessage, "", sizeof WC->ImportantMessage);
 406                 }
 407                 if ( (WC->logged_in) && (!unset_cookies) ) {
 408                         wprintf("<div id=\"iconbar\">");
 409                         do_selected_iconbar();
 410                         wprintf("</div>\n");
 411                 }
 412                 if (do_room_banner == 1) {
 413                         wprintf("<div id=\"banner\">\n");
 414                         embed_room_banner(NULL, navbar_default);
 415                         wprintf("</div>\n");
 416                 }
 417         }
 418
 419         if (do_room_banner == 1) {
 420                 wprintf("<div id=\"content\">\n");
 421         }
 422 }
 423
 424
 425 /*
 426  * Generic function to do an HTTP redirect.  Easy and fun.
 427  */
 428 void http_redirect(char *whichpage) {
 429         wprintf("HTTP/1.1 302 Moved Temporarily\n");
 430         wprintf("Location: %s\r\n", whichpage);
 431         wprintf("URI: %s\r\n", whichpage);
 432         wprintf("Content-type: text/html; charset=utf-8\r\n\r\n");
 433         wprintf("<html><body>");
 434         wprintf("Go <a href=\"%s\">here</A>.", whichpage);
 435         wprintf("</body></html>\n");
 436 }
 437
 438
 439
 440 /*
 441  * Output a piece of content to the web browser
 442  */
 443 void http_transmit_thing(char *thing, size_t length, char *content_type,
 444                          int is_static) {
 445
 446         output_headers(0, 0, 0, 0, 0, is_static);
 447
 448         wprintf("Content-type: %s\r\n"
 449                 "Server: %s\r\n"
 450                 "Connection: close\r\n",
 451                 content_type,
 452                 SERVER);
 453
 454 #ifdef HAVE_ZLIB
 455         /* If we can send the data out compressed, please do so. */
 456         if (WC->gzip_ok) {
 457                 char *compressed_data = NULL;
 458                 uLongf compressed_len;
 459
 460                 compressed_len = (uLongf) ((length * 101) / 100) + 100;
 461                 compressed_data = malloc(compressed_len);
 462
 463                 if (compress_gzip((Bytef *) compressed_data,
 464                                   &compressed_len,
 465                                   (Bytef *) thing,
 466                                   (uLongf) length, Z_BEST_SPEED) == Z_OK) {
 467                         wprintf("Content-encoding: gzip\r\n"
 468                                 "Content-length: %ld\r\n"
 469                                 "\r\n",
 470                                 (long) compressed_len
 471                         );
 472                         client_write(compressed_data, (size_t)compressed_len);
 473                         free(compressed_data);
 474                         return;
 475                 }
 476         }
 477 #endif
 478
 479         /* No compression ... just send it out as-is */
 480         wprintf("Content-length: %ld\r\n"
 481                 "\r\n",
 482                 (long) length
 483         );
 484         client_write(thing, (size_t)length);
 485 }
 486
 487
 488
 489
 490 void output_static(char *what)
 491 {
 492         FILE *fp;
 493         struct stat statbuf;
 494         off_t bytes;
 495         char *bigbuffer;
 496         char content_type[128];
 497
 498         fp = fopen(what, "rb");
 499         if (fp == NULL) {
 500                 lprintf(9, "output_static('%s')  -- NOT FOUND --\n", what);
 501                 wprintf("HTTP/1.1 404 %s\n", strerror(errno));
 502                 wprintf("Content-Type: text/plain\r\n");
 503                 wprintf("\r\n");
 504                 wprintf("Cannot open %s: %s\n", what, strerror(errno));
 505         } else {
 506                 if (!strncasecmp(&what[strlen(what) - 4], ".gif", 4))
 507                         safestrncpy(content_type, "image/gif", sizeof content_type);
 508                 else if (!strncasecmp(&what[strlen(what) - 4], ".txt", 4))
 509                         safestrncpy(content_type, "text/plain", sizeof content_type);
 510                 else if (!strncasecmp(&what[strlen(what) - 4], ".css", 4))
 511                         safestrncpy(content_type, "text/css", sizeof content_type);
 512                 else if (!strncasecmp(&what[strlen(what) - 4], ".jpg", 4))
 513                         safestrncpy(content_type, "image/jpeg", sizeof content_type);
 514                 else if (!strncasecmp(&what[strlen(what) - 4], ".png", 4))
 515                         safestrncpy(content_type, "image/png", sizeof content_type);
 516                 else if (!strncasecmp(&what[strlen(what) - 4], ".ico", 4))
 517                         safestrncpy(content_type, "image/x-icon", sizeof content_type);
 518                 else if (!strncasecmp(&what[strlen(what) - 5], ".html", 5))
 519                         safestrncpy(content_type, "text/html", sizeof content_type);
 520                 else if (!strncasecmp(&what[strlen(what) - 4], ".htm", 4))
 521                         safestrncpy(content_type, "text/html", sizeof content_type);
 522                 else if (!strncasecmp(&what[strlen(what) - 4], ".wml", 4))
 523                         safestrncpy(content_type, "text/vnd.wap.wml", sizeof content_type);
 524                 else if (!strncasecmp(&what[strlen(what) - 5], ".wmls", 5))
 525                         safestrncpy(content_type, "text/vnd.wap.wmlscript", sizeof content_type);
 526                 else if (!strncasecmp(&what[strlen(what) - 5], ".wmlc", 5))
 527                         safestrncpy(content_type, "application/vnd.wap.wmlc", sizeof content_type);
 528                 else if (!strncasecmp(&what[strlen(what) - 6], ".wmlsc", 6))
 529                         safestrncpy(content_type, "application/vnd.wap.wmlscriptc", sizeof content_type);
 530                 else if (!strncasecmp(&what[strlen(what) - 5], ".wbmp", 5))
 531                         safestrncpy(content_type, "image/vnd.wap.wbmp", sizeof content_type);
 532                 else if (!strncasecmp(&what[strlen(what) - 3], ".js", 3))
 533                         safestrncpy(content_type, "text/javascript", sizeof content_type);
 534                 else
 535                         safestrncpy(content_type, "application/octet-stream", sizeof content_type);
 536
 537                 fstat(fileno(fp), &statbuf);
 538                 bytes = statbuf.st_size;
 539                 bigbuffer = malloc(bytes + 2);
 540                 fread(bigbuffer, bytes, 1, fp);
 541                 fclose(fp);
 542
 543                 lprintf(9, "output_static('%s')  %s\n", what, content_type);
 544                 http_transmit_thing(bigbuffer, (size_t)bytes, content_type, 1);
 545                 free(bigbuffer);
 546         }
 547         if (!strcasecmp(bstr("force_close_session"), "yes")) {
 548                 end_webcit_session();
 549         }
 550 }
 551
 552
 553 /*
 554  * When the browser requests an image file from the Citadel server,
 555  * this function is called to transmit it.
 556  */
 557 void output_image()
 558 {
 559         char buf[SIZ];
 560         char *xferbuf = NULL;
 561         off_t bytes;
 562
 563         serv_printf("OIMG %s|%s", bstr("name"), bstr("parm"));
 564         serv_getln(buf, sizeof buf);
 565         if (buf[0] == '2') {
 566                 bytes = extract_long(&buf[4], 0);
 567                 xferbuf = malloc(bytes + 2);
 568
 569                 /* Read it from the server */
 570                 read_server_binary(xferbuf, bytes);
 571                 serv_puts("CLOS");
 572                 serv_getln(buf, sizeof buf);
 573
 574                 /* Write it to the browser */
 575                 http_transmit_thing(xferbuf, (size_t)bytes, "image/gif", 0);
 576                 free(xferbuf);
 577
 578         } else {
 579                 /* Instead of an ugly 404, send a 1x1 transparent GIF
 580                  * when there's no such image on the server.
 581                  */
 582                 output_static("static/blank.gif");
 583         }
 584
 585
 586
 587 }
 588
 589 /*
 590  * Generic function to output an arbitrary MIME part from an arbitrary
 591  * message number on the server.
 592  */
 593 void mimepart(char *msgnum, char *partnum)
 594 {
 595         char buf[SIZ];
 596         off_t bytes;
 597         char content_type[SIZ];
 598         char *content = NULL;
 599
 600         serv_printf("OPNA %s|%s", msgnum, partnum);
 601         serv_getln(buf, sizeof buf);
 602         if (buf[0] == '2') {
 603                 bytes = extract_long(&buf[4], 0);
 604                 content = malloc(bytes + 2);
 605                 extract_token(content_type, &buf[4], 3, '|', sizeof content_type);
 606                 output_headers(0, 0, 0, 0, 0, 0);
 607                 read_server_binary(content, bytes);
 608                 serv_puts("CLOS");
 609                 serv_getln(buf, sizeof buf);
 610                 http_transmit_thing(content, bytes, content_type, 0);
 611                 free(content);
 612         } else {
 613                 wprintf("HTTP/1.1 404 %s\n", &buf[4]);
 614                 output_headers(0, 0, 0, 0, 0, 0);
 615                 wprintf("Content-Type: text/plain\r\n");
 616                 wprintf("\r\n");
 617                 wprintf(_("An error occurred while retrieving this part: %s\n"), &buf[4]);
 618         }
 619
 620 }
 621
 622
 623 /*
 624  * Read any MIME part of a message, from the server, into memory.
 625  */
 626 char *load_mimepart(long msgnum, char *partnum)
 627 {
 628         char buf[SIZ];
 629         off_t bytes;
 630         char content_type[SIZ];
 631         char *content;
 632
 633         serv_printf("OPNA %ld|%s", msgnum, partnum);
 634         serv_getln(buf, sizeof buf);
 635         if (buf[0] == '2') {
 636                 bytes = extract_long(&buf[4], 0);
 637                 extract_token(content_type, &buf[4], 3, '|', sizeof content_type);
 638
 639                 content = malloc(bytes + 2);
 640                 read_server_binary(content, bytes);
 641
 642                 serv_puts("CLOS");
 643                 serv_getln(buf, sizeof buf);
 644                 content[bytes] = 0;     /* null terminate for good measure */
 645                 return(content);
 646         }
 647         else {
 648                 return(NULL);
 649         }
 650
 651 }
 652
 653
 654 /*
 655  * Convenience functions to display a page containing only a string
 656  */
 657 void convenience_page(char *titlebarcolor, char *titlebarmsg, char *messagetext)
 658 {
 659         wprintf("HTTP/1.1 200 OK\n");
 660         output_headers(1, 1, 2, 0, 0, 0);
 661         wprintf("<div id=\"banner\">\n");
 662         wprintf("<TABLE WIDTH=100%% BORDER=0 BGCOLOR=\"#%s\"><TR><TD>", titlebarcolor);
 663         wprintf("<SPAN CLASS=\"titlebar\">%s</SPAN>\n", titlebarmsg);
 664         wprintf("</TD></TR></TABLE>\n");
 665         wprintf("</div>\n<div id=\"content\">\n");
 666         escputs(messagetext);
 667
 668         wprintf("<hr />\n");
 669         wDumpContent(1);
 670 }
 671
 672
 673 /*
 674  * Display a blank page.
 675  */
 676 void blank_page(void) {
 677         output_headers(1, 1, 0, 0, 0, 0);
 678         wDumpContent(2);
 679 }
 680
 681
 682 /*
 683  * A template has been requested
 684  */
 685 void url_do_template(void) {
 686         do_template(bstr("template"));
 687 }
 688
 689
 690
 691 /*
 692  * Offer to make any page the user's "start page."
 693  */
 694 void offer_start_page(void) {
 695         wprintf("<a href=\"change_start_page?startpage=");
 696         urlescputs(WC->this_page);
 697         wprintf("\"><FONT SIZE=-2 COLOR=\"#AAAAAA\">");
 698         wprintf(_("Make this my start page"));
 699         wprintf("</FONT></A>");
 700 /*
 701         wprintf("<br/><a href=\"rss?room=");
 702         urlescputs(WC->wc_roomname);
 703         wprintf("\" title=\"RSS 2.0 feed for ");
 704         escputs(WC->wc_roomname);
 705         wprintf("\"><img alt=\"RSS\" border=\"0\" src=\"static/xml_button.gif\"/></a>\n");
 706 */
 707 }
 708
 709
 710 /*
 711  * Change the user's start page
 712  */
 713 void change_start_page(void) {
 714
 715         if (bstr("startpage") == NULL) {
 716                 safestrncpy(WC->ImportantMessage,
 717                         _("You no longer have a start page selected."),
 718                         sizeof WC->ImportantMessage);
 719                 display_main_menu();
 720                 return;
 721         }
 722
 723         set_preference("startpage", bstr("startpage"), 1);
 724
 725         output_headers(1, 1, 0, 0, 0, 0);
 726         do_template("newstartpage");
 727         wDumpContent(1);
 728 }
 729
 730
 731
 732
 733 void display_success(char *successmessage)
 734 {
 735         convenience_page("007700", "OK", successmessage);
 736 }
 737
 738
 739 /* Authorization required page */
 740 /* This is probably temporary and should be revisited */
 741 void authorization_required(const char *message)
 742 {
 743         wprintf("HTTP/1.1 401 Authorization Required\r\n");
 744         wprintf("WWW-Authenticate: Basic realm=\"\"\r\n", serv_info.serv_humannode);
 745         wprintf("Content-Type: text/html\r\n\r\n");
 746         wprintf("<h1>");
 747         wprintf(_("Authorization Required"));
 748         wprintf("</h1>\r\n");
 749         wprintf(_("The resource you requested requires a valid username and password. "
 750                 "You could not be logged in: %s\n"), message);
 751         wDumpContent(0);
 752 }
 753
 754
 755 void upload_handler(char *name, char *filename, char *partnum, char *disp,
 756                         void *content, char *cbtype, char *cbcharset,
 757                         size_t length, char *encoding, void *userdata)
 758 {
 759         struct urlcontent *u;
 760
 761         /* lprintf(9, "upload_handler() name=%s, type=%s, len=%d\n",
 762                 name, cbtype, length); */
 763
 764         /* Form fields */
 765         if ( (length > 0) && (strlen(cbtype) == 0) ) {
 766                 u = (struct urlcontent *) malloc(sizeof(struct urlcontent));
 767                 u->next = WC->urlstrings;
 768                 WC->urlstrings = u;
 769                 safestrncpy(u->url_key, name, sizeof(u->url_key));
 770                 u->url_data = malloc(length + 1);
 771                 memcpy(u->url_data, content, length);
 772                 u->url_data[length] = 0;
 773         }
 774
 775         /* Uploaded files */
 776         if ( (length > 0) && (strlen(cbtype) > 0) ) {
 777                 WC->upload = malloc(length);
 778                 if (WC->upload != NULL) {
 779                         WC->upload_length = length;
 780                         safestrncpy(WC->upload_filename, filename,
 781                                         sizeof(WC->upload_filename));
 782                         safestrncpy(WC->upload_content_type, cbtype,
 783                                         sizeof(WC->upload_content_type));
 784                         memcpy(WC->upload, content, length);
 785                 }
 786                 else {
 787                         lprintf(3, "malloc() failed: %s\n", strerror(errno));
 788                 }
 789         }
 790
 791 }
 792
 793 /*
 794  * Convenience functions to wrap around asynchronous ajax responses
 795  */
 796 void begin_ajax_response(void) {
 797         output_headers(0, 0, 0, 0, 0, 0);
 798
 799         wprintf("Content-type: text/html; charset=UTF-8\r\n"
 800                 "Server: %s\r\n"
 801                 "Connection: close\r\n"
 802                 "Pragma: no-cache\r\n"
 803                 "Cache-Control: no-cache\r\n",
 804                 SERVER);
 805         begin_burst();
 806 }
 807
 808 void end_ajax_response(void) {
 809         wprintf("\r\n");
 810         wDumpContent(0);
 811 }
 812
 813 void ajax_servcmd(void)
 814 {
 815         char buf[1024];
 816         char gcontent[1024];
 817         char *junk;
 818         size_t len;
 819
 820         begin_ajax_response();
 821
 822         /* lprintf(9, "Sending cmd: %s\n", bstr("g_cmd")); */
 823         serv_printf("%s", bstr("g_cmd"));
 824         serv_getln(buf, sizeof buf);
 825         wprintf("%s\n", buf);
 826         /* lprintf(9, "   Response: %s\n", buf); */
 827
 828         if (buf[0] == '8') {
 829                 serv_printf("\n\n000");
 830         }
 831         if ((buf[0] == '1') || (buf[0] == '8')) {
 832                 while (serv_getln(gcontent, sizeof gcontent), strcmp(gcontent, "000")) {
 833                         wprintf("%s\n", gcontent);
 834                 }
 835                 wprintf("000");
 836         }
 837         if (buf[0] == '4') {
 838                 text_to_server(bstr("g_input"), 0);
 839                 serv_puts("000");
 840         }
 841         if (buf[0] == '6') {
 842                 len = atol(&buf[4]);
 843                 junk = malloc(len);
 844                 serv_read(junk, len);
 845                 free(junk);
 846         }
 847         if (buf[0] == '7') {
 848                 len = atol(&buf[4]);
 849                 junk = malloc(len);
 850                 memset(junk, 0, len);
 851                 serv_write(junk, len);
 852                 free(junk);
 853         }
 854
 855         end_ajax_response();
 856 }
 857
 858
 859
 860
 861
 862
 863 /*
 864  * Entry point for WebCit transaction
 865  */
 866 void session_loop(struct httprequest *req)
 867 {
 868         char cmd[1024];
 869         char action[1024];
 870         char arg1[128];
 871         char arg2[128];
 872         char arg3[128];
 873         char arg4[128];
 874         char arg5[128];
 875         char arg6[128];
 876         char arg7[128];
 877         char buf[SIZ];
 878         char request_method[128];
 879         char pathname[1024];
 880         int a, b;
 881         int ContentLength = 0;
 882         int BytesRead = 0;
 883         char ContentType[512];
 884         char *content = NULL;
 885         char *content_end = NULL;
 886         struct httprequest *hptr;
 887         char browser_host[256];
 888         char user_agent[256];
 889         int body_start = 0;
 890         int is_static = 0;
 891
 892         /* We stuff these with the values coming from the client cookies,
 893          * so we can use them to reconnect a timed out session if we have to.
 894          */
 895         char c_username[SIZ];
 896         char c_password[SIZ];
 897         char c_roomname[SIZ];
 898         char c_httpauth_string[SIZ];
 899         char c_httpauth_user[SIZ];
 900         char c_httpauth_pass[SIZ];
 901         char cookie[SIZ];
 902
 903         safestrncpy(c_username, "", sizeof c_username);
 904         safestrncpy(c_password, "", sizeof c_password);
 905         safestrncpy(c_roomname, "", sizeof c_roomname);
 906         safestrncpy(c_httpauth_string, "", sizeof c_httpauth_string);
 907         safestrncpy(c_httpauth_user, DEFAULT_HTTPAUTH_USER, sizeof c_httpauth_user);
 908         safestrncpy(c_httpauth_pass, DEFAULT_HTTPAUTH_PASS, sizeof c_httpauth_pass);
 909         strcpy(browser_host, "");
 910
 911         WC->upload_length = 0;
 912         WC->upload = NULL;
 913         WC->vars = NULL;
 914         WC->is_wap = 0;
 915
 916         hptr = req;
 917         if (hptr == NULL) return;
 918
 919         safestrncpy(cmd, hptr->line, sizeof cmd);
 920         hptr = hptr->next;
 921         extract_token(request_method, cmd, 0, ' ', sizeof request_method);
 922         extract_token(pathname, cmd, 1, ' ', sizeof pathname);
 923
 924         /* Figure out the action */
 925         extract_token(action, pathname, 1, '/', sizeof action);
 926         if (strstr(action, "?")) *strstr(action, "?") = 0;
 927         if (strstr(action, "&")) *strstr(action, "&") = 0;
 928         if (strstr(action, " ")) *strstr(action, " ") = 0;
 929
 930         extract_token(arg1, pathname, 2, '/', sizeof arg1);
 931         if (strstr(arg1, "?")) *strstr(arg1, "?") = 0;
 932         if (strstr(arg1, "&")) *strstr(arg1, "&") = 0;
 933         if (strstr(arg1, " ")) *strstr(arg1, " ") = 0;
 934
 935         extract_token(arg2, pathname, 3, '/', sizeof arg2);
 936         if (strstr(arg2, "?")) *strstr(arg2, "?") = 0;
 937         if (strstr(arg2, "&")) *strstr(arg2, "&") = 0;
 938         if (strstr(arg2, " ")) *strstr(arg2, " ") = 0;
 939
 940         extract_token(arg3, pathname, 4, '/', sizeof arg3);
 941         if (strstr(arg3, "?")) *strstr(arg3, "?") = 0;
 942         if (strstr(arg3, "&")) *strstr(arg3, "&") = 0;
 943         if (strstr(arg3, " ")) *strstr(arg3, " ") = 0;
 944
 945         extract_token(arg4, pathname, 5, '/', sizeof arg4);
 946         if (strstr(arg4, "?")) *strstr(arg4, "?") = 0;
 947         if (strstr(arg4, "&")) *strstr(arg4, "&") = 0;
 948         if (strstr(arg4, " ")) *strstr(arg4, " ") = 0;
 949
 950         extract_token(arg5, pathname, 6, '/', sizeof arg5);
 951         if (strstr(arg5, "?")) *strstr(arg5, "?") = 0;
 952         if (strstr(arg5, "&")) *strstr(arg5, "&") = 0;
 953         if (strstr(arg5, " ")) *strstr(arg5, " ") = 0;
 954
 955         extract_token(arg6, pathname, 7, '/', sizeof arg6);
 956         if (strstr(arg6, "?")) *strstr(arg6, "?") = 0;
 957         if (strstr(arg6, "&")) *strstr(arg6, "&") = 0;
 958         if (strstr(arg6, " ")) *strstr(arg6, " ") = 0;
 959
 960         extract_token(arg7, pathname, 8, '/', sizeof arg7);
 961         if (strstr(arg7, "?")) *strstr(arg7, "?") = 0;
 962         if (strstr(arg7, "&")) *strstr(arg7, "&") = 0;
 963         if (strstr(arg7, " ")) *strstr(arg7, " ") = 0;
 964
 965         while (hptr != NULL) {
 966                 safestrncpy(buf, hptr->line, sizeof buf);
 967                 hptr = hptr->next;
 968
 969                 if (!strncasecmp(buf, "Cookie: webcit=", 15)) {
 970                         safestrncpy(cookie, &buf[15], sizeof cookie);
 971                         cookie_to_stuff(cookie, NULL,
 972                                         c_username, sizeof c_username,
 973                                         c_password, sizeof c_password,
 974                                         c_roomname, sizeof c_roomname);
 975                 }
 976                 else if (!strncasecmp(buf, "Authorization: Basic ", 21)) {
 977                         CtdlDecodeBase64(c_httpauth_string, &buf[21], strlen(&buf[21]));
 978                         extract_token(c_httpauth_user, c_httpauth_string, 0, ':', sizeof c_httpauth_user);
 979                         extract_token(c_httpauth_pass, c_httpauth_string, 1, ':', sizeof c_httpauth_pass);
 980                 }
 981                 else if (!strncasecmp(buf, "Content-length: ", 16)) {
 982                         ContentLength = atoi(&buf[16]);
 983                 }
 984                 else if (!strncasecmp(buf, "Content-type: ", 14)) {
 985                         safestrncpy(ContentType, &buf[14], sizeof ContentType);
 986                 }
 987                 else if (!strncasecmp(buf, "User-agent: ", 12)) {
 988                         safestrncpy(user_agent, &buf[12], sizeof user_agent);
 989                 }
 990                 else if (!strncasecmp(buf, "Host: ", 6)) {
 991                         safestrncpy(WC->http_host, &buf[6], sizeof WC->http_host);
 992                 }
 993                 else if (!strncasecmp(buf, "X-Forwarded-For: ", 17)) {
 994                         safestrncpy(browser_host, &buf[17], sizeof browser_host);
 995                         while (num_tokens(browser_host, ',') > 1) {
 996                                 remove_token(browser_host, 0, ',');
 997                         }
 998                         striplt(browser_host);
 999                 }
1000                 /* Only WAP gateways explicitly name this content-type */
1001                 else if (strstr(buf, "text/vnd.wap.wml")) {
1002                         WC->is_wap = 1;
1003                 }
1004         }
1005
1006         if (ContentLength > 0) {
1007                 content = malloc(ContentLength + SIZ);
1008                 memset(content, 0, ContentLength + SIZ);
1009                 sprintf(content, "Content-type: %s\n"
1010                                 "Content-length: %d\n\n",
1011                                 ContentType, ContentLength);
1012                 body_start = strlen(content);
1013
1014                 /* Read the entire input data at once. */
1015                 client_read(WC->http_sock, &content[BytesRead+body_start],
1016                         ContentLength);
1017
1018                 if (!strncasecmp(ContentType,
1019                               "application/x-www-form-urlencoded", 33)) {
1020                         addurls(&content[body_start]);
1021                 } else if (!strncasecmp(ContentType, "multipart", 9)) {
1022                         content_end = content + ContentLength + body_start;
1023                         mime_parser(content, content_end, *upload_handler,
1024                                         NULL, NULL, NULL, 0);
1025                 }
1026         } else {
1027                 content = NULL;
1028         }
1029
1030         /* make a note of where we are in case the user wants to save it */
1031         safestrncpy(WC->this_page, cmd, sizeof(WC->this_page));
1032         remove_token(WC->this_page, 2, ' ');
1033         remove_token(WC->this_page, 0, ' ');
1034
1035         /* If there are variables in the URL, we must grab them now */
1036         for (a = 0; a < strlen(cmd); ++a) {
1037                 if ((cmd[a] == '?') || (cmd[a] == '&')) {
1038                         for (b = a; b < strlen(cmd); ++b)
1039                                 if (isspace(cmd[b]))
1040                                         cmd[b] = 0;
1041                         addurls(&cmd[a + 1]);
1042                         cmd[a] = 0;
1043                 }
1044         }
1045
1046
1047         /* Static content can be sent without connecting to Citadel. */
1048         is_static = 0;
1049         for (a=0; a<(sizeof(static_content_dirs) / sizeof(char *)); ++a) {
1050                 if (!strcasecmp(action, static_content_dirs[a])) {
1051                         is_static = 1;
1052                 }
1053         }
1054         if (is_static) {
1055                 snprintf(buf, sizeof buf, "%s/%s/%s/%s/%s/%s/%s/%s",
1056                         action, arg1, arg2, arg3, arg4, arg5, arg6, arg7);
1057                 for (a=0; a<8; ++a) {
1058                         if (buf[strlen(buf)-1] == '/') {
1059                                 buf[strlen(buf)-1] = 0;
1060                         }
1061                 }
1062                 for (a = 0; a < strlen(buf); ++a) {
1063                         if (isspace(buf[a])) {
1064                                 buf[a] = 0;
1065                         }
1066                 }
1067                 output_static(buf);
1068                 goto SKIP_ALL_THIS_CRAP;        /* Don't try to connect */
1069         }
1070
1071         /*
1072          * If we're not connected to a Citadel server, try to hook up the
1073          * connection now.
1074          */
1075         if (!WC->connected) {
1076                 if (!strcasecmp(ctdlhost, "uds")) {
1077                         /* unix domain socket */
1078                         sprintf(buf, "%s/citadel.socket", ctdlport);
1079                         WC->serv_sock = uds_connectsock(buf);
1080                 }
1081                 else {
1082                         /* tcp socket */
1083                         WC->serv_sock = tcp_connectsock(ctdlhost, ctdlport);
1084                 }
1085
1086                 if (WC->serv_sock < 0) {
1087                         do_logout();
1088                         goto SKIP_ALL_THIS_CRAP;
1089                 }
1090                 else {
1091                         WC->connected = 1;
1092                         serv_getln(buf, sizeof buf);    /* get the server welcome message */
1093
1094                         /* From what host is our user connecting?  Go with
1095                          * the host at the other end of the HTTP socket,
1096                          * unless we are following X-Forwarded-For: headers
1097                          * and such a header has already turned up something.
1098                          */
1099                         if ( (!follow_xff) || (strlen(browser_host) == 0) ) {
1100                                 locate_host(browser_host, WC->http_sock);
1101                         }
1102
1103                         get_serv_info(browser_host, user_agent);
1104                         if (serv_info.serv_rev_level < MINIMUM_CIT_VERSION) {
1105                                 wprintf(_("You are connected to a Citadel "
1106                                         "server running Citadel %d.%02d. \n"
1107                                         "In order to run this version of WebCit "
1108                                         "you must also have Citadel %d.%02d or"
1109                                         " newer.\n\n\n"),
1110                                                 serv_info.serv_rev_level / 100,
1111                                                 serv_info.serv_rev_level % 100,
1112                                                 MINIMUM_CIT_VERSION / 100,
1113                                                 MINIMUM_CIT_VERSION % 100
1114                                         );
1115                                 end_webcit_session();
1116                                 goto SKIP_ALL_THIS_CRAP;
1117                         }
1118                 }
1119         }
1120
1121         /*
1122          * Functions which can be performed without logging in
1123          */
1124         if (!strcasecmp(action, "listsub")) {
1125                 do_listsub();
1126                 goto SKIP_ALL_THIS_CRAP;
1127         }
1128 #ifdef WEBCIT_WITH_CALENDAR_SERVICE
1129         if (!strcasecmp(action, "freebusy")) {
1130                 do_freebusy(cmd);
1131                 goto SKIP_ALL_THIS_CRAP;
1132         }
1133 #endif
1134
1135         /*
1136          * If we're not logged in, but we have HTTP Authentication data,
1137          * try logging in to Citadel using that.
1138          */
1139         if ((!WC->logged_in)
1140            && (strlen(c_httpauth_user) > 0)
1141            && (strlen(c_httpauth_pass) > 0)) {
1142                 serv_printf("USER %s", c_httpauth_user);
1143                 serv_getln(buf, sizeof buf);
1144                 if (buf[0] == '3') {
1145                         serv_printf("PASS %s", c_httpauth_pass);
1146                         serv_getln(buf, sizeof buf);
1147                         if (buf[0] == '2') {
1148                                 become_logged_in(c_httpauth_user,
1149                                                 c_httpauth_pass, buf);
1150                                 safestrncpy(WC->httpauth_user, c_httpauth_user, sizeof WC->httpauth_user);
1151                                 safestrncpy(WC->httpauth_pass, c_httpauth_pass, sizeof WC->httpauth_pass);
1152                         } else {
1153                                 /* Should only display when password is wrong */
1154                                 authorization_required(&buf[4]);
1155                                 goto SKIP_ALL_THIS_CRAP;
1156                         }
1157                 }
1158         }
1159
1160         /* This needs to run early */
1161         if (!strcasecmp(action, "rss")) {
1162                 display_rss(bstr("room"), request_method);
1163                 goto SKIP_ALL_THIS_CRAP;
1164         }
1165
1166         /*
1167          * The GroupDAV stuff relies on HTTP authentication instead of
1168          * our session's authentication.
1169          */
1170         if (!strncasecmp(action, "groupdav", 8)) {
1171                 groupdav_main(req, ContentType, /* do GroupDAV methods */
1172                         ContentLength, content+body_start);
1173                 if (!WC->logged_in) {
1174                         WC->killthis = 1;       /* If not logged in, don't */
1175                 }                               /* keep the session active */
1176                 goto SKIP_ALL_THIS_CRAP;
1177         }
1178
1179
1180         /*
1181          * Automatically send requests with any method other than GET or
1182          * POST to the GroupDAV code as well.
1183          */
1184         if ((strcasecmp(request_method, "GET")) && (strcasecmp(request_method, "POST"))) {
1185                 groupdav_main(req, ContentType, /* do GroupDAV methods */
1186                         ContentLength, content+body_start);
1187                 if (!WC->logged_in) {
1188                         WC->killthis = 1;       /* If not logged in, don't */
1189                 }                               /* keep the session active */
1190                 goto SKIP_ALL_THIS_CRAP;
1191         }
1192
1193         /*
1194          * If we're not logged in, but we have username and password cookies
1195          * supplied by the browser, try using them to log in.
1196          */
1197         if ((!WC->logged_in)
1198            && (strlen(c_username) > 0)
1199            && (strlen(c_password) > 0)) {
1200                 serv_printf("USER %s", c_username);
1201                 serv_getln(buf, sizeof buf);
1202                 if (buf[0] == '3') {
1203                         serv_printf("PASS %s", c_password);
1204                         serv_getln(buf, sizeof buf);
1205                         if (buf[0] == '2') {
1206                                 become_logged_in(c_username, c_password, buf);
1207                         }
1208                 }
1209         }
1210         /*
1211          * If we don't have a current room, but a cookie specifying the
1212          * current room is supplied, make an effort to go there.
1213          */
1214         if ((strlen(WC->wc_roomname) == 0) && (strlen(c_roomname) > 0)) {
1215                 serv_printf("GOTO %s", c_roomname);
1216                 serv_getln(buf, sizeof buf);
1217                 if (buf[0] == '2') {
1218                         safestrncpy(WC->wc_roomname, c_roomname, sizeof WC->wc_roomname);
1219                 }
1220         }
1221
1222         if (!strcasecmp(action, "image")) {
1223                 output_image();
1224
1225         /*
1226          * All functions handled below this point ... make sure we log in
1227          * before doing anything else!
1228          */
1229         } else if ((!WC->logged_in) && (!strcasecmp(action, "login"))) {
1230                 do_login();
1231         } else if (!WC->logged_in) {
1232                 display_login(NULL);
1233         }
1234
1235         /*
1236          * Various commands...
1237          */
1238
1239         else if (!strcasecmp(action, "do_welcome")) {
1240                 do_welcome();
1241         } else if (!strcasecmp(action, "blank")) {
1242                 blank_page();
1243         } else if (!strcasecmp(action, "do_template")) {
1244                 url_do_template();
1245         } else if (!strcasecmp(action, "display_aide_menu")) {
1246                 display_aide_menu();
1247         } else if (!strcasecmp(action, "display_main_menu")) {
1248                 display_main_menu();
1249         } else if (!strcasecmp(action, "who")) {
1250                 who();
1251         } else if (!strcasecmp(action, "who_inner_html")) {
1252                 begin_ajax_response();
1253                 who_inner_div();
1254                 end_ajax_response();
1255         } else if (!strcasecmp(action, "iconbar_ajax_menu")) {
1256                 begin_ajax_response();
1257                 do_iconbar();
1258                 end_ajax_response();
1259         } else if (!strcasecmp(action, "iconbar_ajax_rooms")) {
1260                 begin_ajax_response();
1261                 do_iconbar_roomlist();
1262                 end_ajax_response();
1263         } else if (!strcasecmp(action, "knrooms")) {
1264                 knrooms();
1265         } else if (!strcasecmp(action, "gotonext")) {
1266                 slrp_highest();
1267                 gotonext();
1268         } else if (!strcasecmp(action, "skip")) {
1269                 gotonext();
1270         } else if (!strcasecmp(action, "ungoto")) {
1271                 ungoto();
1272         } else if (!strcasecmp(action, "dotgoto")) {
1273                 if (WC->wc_view != VIEW_MAILBOX) {      /* dotgoto acts like dotskip when we're in a mailbox view */
1274                         slrp_highest();
1275                 }
1276                 smart_goto(bstr("room"));
1277         } else if (!strcasecmp(action, "dotskip")) {
1278                 smart_goto(bstr("room"));
1279         } else if (!strcasecmp(action, "termquit")) {
1280                 do_logout();
1281         } else if (!strcasecmp(action, "readnew")) {
1282                 readloop("readnew");
1283         } else if (!strcasecmp(action, "readold")) {
1284                 readloop("readold");
1285         } else if (!strcasecmp(action, "readfwd")) {
1286                 readloop("readfwd");
1287         } else if (!strcasecmp(action, "headers")) {
1288                 readloop("headers");
1289         } else if (!strcasecmp(action, "msg")) {
1290                 embed_message(arg1);
1291         } else if (!strcasecmp(action, "printmsg")) {
1292                 print_message(arg1);
1293         } else if (!strcasecmp(action, "msgheaders")) {
1294                 display_headers(arg1);
1295         } else if (!strcasecmp(action, "display_enter")) {
1296                 display_enter();
1297         } else if (!strcasecmp(action, "post")) {
1298                 post_message();
1299         } else if (!strcasecmp(action, "move_msg")) {
1300                 move_msg();
1301         } else if (!strcasecmp(action, "delete_msg")) {
1302                 delete_msg();
1303         } else if (!strcasecmp(action, "userlist")) {
1304                 userlist();
1305         } else if (!strcasecmp(action, "showuser")) {
1306                 showuser();
1307         } else if (!strcasecmp(action, "display_page")) {
1308                 display_page();
1309         } else if (!strcasecmp(action, "page_user")) {
1310                 page_user();
1311         } else if (!strcasecmp(action, "chat")) {
1312                 do_chat();
1313         } else if (!strcasecmp(action, "display_private")) {
1314                 display_private("", 0);
1315         } else if (!strcasecmp(action, "goto_private")) {
1316                 goto_private();
1317         } else if (!strcasecmp(action, "zapped_list")) {
1318                 zapped_list();
1319         } else if (!strcasecmp(action, "display_zap")) {
1320                 display_zap();
1321         } else if (!strcasecmp(action, "zap")) {
1322                 zap();
1323         } else if (!strcasecmp(action, "display_entroom")) {
1324                 display_entroom();
1325         } else if (!strcasecmp(action, "entroom")) {
1326                 entroom();
1327         } else if (!strcasecmp(action, "display_whok")) {
1328                 display_whok();
1329         } else if (!strcasecmp(action, "do_invt_kick")) {
1330                 do_invt_kick();
1331         } else if (!strcasecmp(action, "display_editroom")) {
1332                 display_editroom();
1333         } else if (!strcasecmp(action, "netedit")) {
1334                 netedit();
1335         } else if (!strcasecmp(action, "editroom")) {
1336                 editroom();
1337         } else if (!strcasecmp(action, "display_editinfo")) {
1338                 display_edit(_("Room info"), "EINF 0", "RINF", "/editinfo", 1);
1339         } else if (!strcasecmp(action, "editinfo")) {
1340                 save_edit(_("Room info"), "EINF 1", 1);
1341         } else if (!strcasecmp(action, "display_editbio")) {
1342                 sprintf(buf, "RBIO %s", WC->wc_username);
1343                 display_edit(_("Your bio"), "NOOP", buf, "editbio", 3);
1344         } else if (!strcasecmp(action, "editbio")) {
1345                 save_edit(_("Your bio"), "EBIO", 0);
1346         } else if (!strcasecmp(action, "confirm_move_msg")) {
1347                 confirm_move_msg();
1348         } else if (!strcasecmp(action, "delete_room")) {
1349                 delete_room();
1350         } else if (!strcasecmp(action, "validate")) {
1351                 validate();
1352         } else if (!strcasecmp(action, "display_editpic")) {
1353                 display_graphics_upload(_("your photo"),
1354                                         "UIMG 0|_userpic_",
1355                                         "editpic");
1356         } else if (!strcasecmp(action, "editpic")) {
1357                 do_graphics_upload("UIMG 1|_userpic_");
1358         } else if (!strcasecmp(action, "display_editroompic")) {
1359                 display_graphics_upload(_("the icon for this room"),
1360                                         "UIMG 0|_roompic_",
1361                                         "editroompic");
1362         } else if (!strcasecmp(action, "editroompic")) {
1363                 do_graphics_upload("UIMG 1|_roompic_");
1364         } else if (!strcasecmp(action, "delete_floor")) {
1365                 delete_floor();
1366         } else if (!strcasecmp(action, "rename_floor")) {
1367                 rename_floor();
1368         } else if (!strcasecmp(action, "create_floor")) {
1369                 create_floor();
1370         } else if (!strcasecmp(action, "display_editfloorpic")) {
1371                 sprintf(buf, "UIMG 0|_floorpic_|%s",
1372                         bstr("which_floor"));
1373                 display_graphics_upload(_("the icon for this floor"),
1374                                         buf,
1375                                         "editfloorpic");
1376         } else if (!strcasecmp(action, "editfloorpic")) {
1377                 sprintf(buf, "UIMG 1|_floorpic_|%s",
1378                         bstr("which_floor"));
1379                 do_graphics_upload(buf);
1380         } else if (!strcasecmp(action, "display_reg")) {
1381                 display_reg(0);
1382         } else if (!strcasecmp(action, "display_changepw")) {
1383                 display_changepw();
1384         } else if (!strcasecmp(action, "changepw")) {
1385                 changepw();
1386         } else if (!strcasecmp(action, "display_edit_node")) {
1387                 display_edit_node();
1388         } else if (!strcasecmp(action, "edit_node")) {
1389                 edit_node();
1390         } else if (!strcasecmp(action, "display_netconf")) {
1391                 display_netconf();
1392         } else if (!strcasecmp(action, "display_confirm_delete_node")) {
1393                 display_confirm_delete_node();
1394         } else if (!strcasecmp(action, "delete_node")) {
1395                 delete_node();
1396         } else if (!strcasecmp(action, "display_add_node")) {
1397                 display_add_node();
1398         } else if (!strcasecmp(action, "add_node")) {
1399                 add_node();
1400         } else if (!strcasecmp(action, "terminate_session")) {
1401                 slrp_highest();
1402                 terminate_session();
1403         } else if (!strcasecmp(action, "edit_me")) {
1404                 edit_me();
1405         } else if (!strcasecmp(action, "display_siteconfig")) {
1406                 display_siteconfig();
1407         } else if (!strcasecmp(action, "chat_recv")) {
1408                 chat_recv();
1409         } else if (!strcasecmp(action, "chat_send")) {
1410                 chat_send();
1411         } else if (!strcasecmp(action, "siteconfig")) {
1412                 siteconfig();
1413         } else if (!strcasecmp(action, "display_generic")) {
1414                 display_generic();
1415         } else if (!strcasecmp(action, "do_generic")) {
1416                 do_generic();
1417         } else if (!strcasecmp(action, "ajax_servcmd")) {
1418                 ajax_servcmd();
1419         } else if (!strcasecmp(action, "display_menubar")) {
1420                 display_menubar(1);
1421         } else if (!strcasecmp(action, "mimepart")) {
1422                 mimepart(arg1, arg2);
1423         } else if (!strcasecmp(action, "edit_vcard")) {
1424                 edit_vcard();
1425         } else if (!strcasecmp(action, "submit_vcard")) {
1426                 submit_vcard();
1427         } else if (!strcasecmp(action, "select_user_to_edit")) {
1428                 select_user_to_edit(NULL, NULL);
1429         } else if (!strcasecmp(action, "display_edituser")) {
1430                 display_edituser(NULL, 0);
1431         } else if (!strcasecmp(action, "edituser")) {
1432                 edituser();
1433         } else if (!strcasecmp(action, "create_user")) {
1434                 create_user();
1435         } else if (!strcasecmp(action, "changeview")) {
1436                 change_view();
1437         } else if (!strcasecmp(action, "change_start_page")) {
1438                 change_start_page();
1439         } else if (!strcasecmp(action, "display_floorconfig")) {
1440                 display_floorconfig(NULL);
1441         } else if (!strcasecmp(action, "toggle_self_service")) {
1442                 toggle_self_service();
1443 #ifdef WEBCIT_WITH_CALENDAR_SERVICE
1444         } else if (!strcasecmp(action, "display_edit_task")) {
1445                 display_edit_task();
1446         } else if (!strcasecmp(action, "save_task")) {
1447                 save_task();
1448         } else if (!strcasecmp(action, "display_edit_event")) {
1449                 display_edit_event();
1450         } else if (!strcasecmp(action, "save_event")) {
1451                 save_event();
1452         } else if (!strcasecmp(action, "respond_to_request")) {
1453                 respond_to_request();
1454         } else if (!strcasecmp(action, "handle_rsvp")) {
1455                 handle_rsvp();
1456 #endif
1457         } else if (!strcasecmp(action, "summary")) {
1458                 summary();
1459         } else if (!strcasecmp(action, "summary_inner_div")) {
1460                 begin_ajax_response();
1461                 summary_inner_div();
1462                 end_ajax_response();
1463         } else if (!strcasecmp(action, "display_customize_iconbar")) {
1464                 display_customize_iconbar();
1465         } else if (!strcasecmp(action, "commit_iconbar")) {
1466                 commit_iconbar();
1467         } else if (!strcasecmp(action, "set_room_policy")) {
1468                 set_room_policy();
1469         } else if (!strcasecmp(action, "display_inetconf")) {
1470                 display_inetconf();
1471         } else if (!strcasecmp(action, "save_inetconf")) {
1472                 save_inetconf();
1473         } else if (!strcasecmp(action, "setup_wizard")) {
1474                 do_setup_wizard();
1475         } else if (!strcasecmp(action, "display_preferences")) {
1476                 display_preferences();
1477         } else if (!strcasecmp(action, "set_preferences")) {
1478                 set_preferences();
1479         } else if (!strcasecmp(action, "recp_autocomplete")) {
1480                 recp_autocomplete(bstr("recp"));
1481         } else if (!strcasecmp(action, "cc_autocomplete")) {
1482                 recp_autocomplete(bstr("cc"));
1483         } else if (!strcasecmp(action, "bcc_autocomplete")) {
1484                 recp_autocomplete(bstr("bcc"));
1485         } else if (!strcasecmp(action, "set_floordiv_expanded")) {
1486                 set_floordiv_expanded(arg1);
1487         } else if (!strcasecmp(action, "diagnostics")) {
1488                 output_headers(1, 1, 1, 0, 0, 0);
1489                 wprintf("Session: %d<hr />\n", WC->wc_session);
1490                 wprintf("Command: <br /><PRE>\n");
1491                 escputs(cmd);
1492                 wprintf("</PRE><hr />\n");
1493                 wprintf("Variables: <br /><PRE>\n");
1494                 dump_vars();
1495                 wprintf("</PRE><hr />\n");
1496                 wDumpContent(1);
1497         }
1498
1499         /* When all else fais, display the main menu. */
1500         else {
1501                 display_main_menu();
1502         }
1503
1504 SKIP_ALL_THIS_CRAP:
1505         fflush(stdout);
1506         if (content != NULL) {
1507                 free(content);
1508                 content = NULL;
1509         }
1510         free_urls();
1511         if (WC->upload_length > 0) {
1512                 free(WC->upload);
1513                 WC->upload_length = 0;
1514         }
1515 }