webcit/webcit.c

   1 /*
   2  * $Id$
   3  */
   4 /**
   5  * \defgroup MainServer This is the main transaction loop of the web service.  It maintains a
   6  * persistent session to the Citadel server, handling HTTP WebCit requests as
   7  * they arrive and presenting a user interface.
   8  * \ingroup WebcitHttpServer
   9  */
  10 /*@{*/
  11 #include "webcit.h"
  12 #include "groupdav.h"
  13 #include "webserver.h"
  14 #include "mime_parser.h"
  15
  16 /**
  17  * String to unset the cookie.
  18  * Any date "in the past" will work, so I chose my birthday, right down to
  19  * the exact minute.  :)
  20  */
  21 static char *unset = "; expires=28-May-1971 18:10:00 GMT";
  22
  23 /**
  24  * \brief remove escaped strings from i.e. the url string (like %20 for blanks)
  25  * \param buf the buffer to examine
  26  */
  27 void unescape_input(char *buf)
  28 {
  29         int a, b;
  30         char hex[3];
  31
  32         while ((isspace(buf[strlen(buf) - 1])) && (strlen(buf) > 0))
  33                 buf[strlen(buf) - 1] = 0;
  34
  35         for (a = 0; a < strlen(buf); ++a) {
  36                 if (buf[a] == '+')
  37                         buf[a] = ' ';
  38                 if (buf[a] == '%') {
  39                         hex[0] = buf[a + 1];
  40                         hex[1] = buf[a + 2];
  41                         hex[2] = 0;
  42                         b = 0;
  43                         sscanf(hex, "%02x", &b);
  44                         buf[a] = (char) b;
  45                         strcpy(&buf[a + 1], &buf[a + 3]);
  46                 }
  47         }
  48
  49 }
  50
  51 /**
  52  * \brief Extract variables from the URL.
  53  * \param url URL supplied by the HTTP parser
  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                 /* lprintf(9, "%s = %s\n", u->url_key, u->url_data); */
 107         }
 108 }
 109
 110 /**
 111  * \brief free urlstring memory
 112  */
 113 void free_urls(void)
 114 {
 115         struct urlcontent *u;
 116
 117         while (WC->urlstrings != NULL) {
 118                 free(WC->urlstrings->url_data);
 119                 u = WC->urlstrings->next;
 120                 free(WC->urlstrings);
 121                 WC->urlstrings = u;
 122         }
 123 }
 124
 125 /**
 126  * \brief Diagnostic function to display the contents of all variables
 127  */
 128 void dump_vars(void)
 129 {
 130         struct urlcontent *u;
 131
 132         for (u = WC->urlstrings; u != NULL; u = u->next) {
 133                 wprintf("%38s = %s\n", u->url_key, u->url_data);
 134         }
 135 }
 136
 137 /**
 138  * \brief Return the value of a variable supplied to the current web page (from the url or a form)
 139  * \param key The name of the variable we want
 140  */
 141 char *bstr(char *key)
 142 {
 143         struct urlcontent *u;
 144
 145         for (u = WC->urlstrings; u != NULL; u = u->next) {
 146                 if (!strcasecmp(u->url_key, key))
 147                         return (u->url_data);
 148         }
 149         return ("");
 150 }
 151
 152 /**
 153  * \brief web-printing funcion. uses our vsnprintf wrapper
 154  * \param format printf format string
 155  * \param ... the varargs to put into formatstring
 156  */
 157 void wprintf(const char *format,...)
 158 {
 159         va_list arg_ptr;
 160         char wbuf[4096];
 161
 162         va_start(arg_ptr, format);
 163         vsnprintf(wbuf, sizeof wbuf, format, arg_ptr);
 164         va_end(arg_ptr);
 165
 166         client_write(wbuf, strlen(wbuf));
 167 }
 168
 169
 170 /**
 171  * \brief wrap up an HTTP session, closes tags, etc.
 172  * \todo multiline params?
 173  * \param print_standard_html_footer should be set to 0 to transmit only, 1 to
 174  * append the main menu and closing tags, or 2 to
 175  * append the closing tags only.
 176  */
 177 void wDumpContent(int print_standard_html_footer)
 178 {
 179         if (print_standard_html_footer) {
 180                 wprintf("</div>\n");    /* end of "text" div */
 181                 do_template("trailing");
 182         }
 183
 184         /* If we've been saving it all up for one big output burst,
 185          * go ahead and do that now.
 186          */
 187         end_burst();
 188 }
 189
 190
 191 /**
 192  * \brief Copy a string, escaping characters which have meaning in HTML.
 193  * \param target target buffer
 194  * \param strbuf source buffer
 195  * \param nbsp If nonzero, spaces are converted to non-breaking spaces.
 196  * \param nolinebreaks if set, linebreaks are removed from the string.
 197  */
 198 void stresc(char *target, char *strbuf, int nbsp, int nolinebreaks)
 199 {
 200         int a;
 201         strcpy(target, "");
 202
 203         for (a = 0; a < strlen(strbuf); ++a) {
 204                 if (strbuf[a] == '<')
 205                         strcat(target, "&lt;");
 206                 else if (strbuf[a] == '>')
 207                         strcat(target, "&gt;");
 208                 else if (strbuf[a] == '&')
 209                         strcat(target, "&amp;");
 210                 else if (strbuf[a] == '\"')
 211                         strcat(target, "&quot;");
 212                 else if (strbuf[a] == '\'')
 213                         strcat(target, "&#39;");
 214                 else if (strbuf[a] == LB)
 215                         strcat(target, "<");
 216                 else if (strbuf[a] == RB)
 217                         strcat(target, ">");
 218                 else if (strbuf[a] == QU)
 219                         strcat(target, "\"");
 220                 else if ((strbuf[a] == 32) && (nbsp == 1))
 221                         strcat(target, "&nbsp;");
 222                 else if ((strbuf[a] == '\n') && (nolinebreaks))
 223                         strcat(target, "");     /* nothing */
 224                 else if ((strbuf[a] == '\r') && (nolinebreaks))
 225                         strcat(target, "");     /* nothing */
 226                 else
 227                         strncat(target, &strbuf[a], 1);
 228         }
 229 }
 230
 231 /**
 232  * \brief WHAT???
 233  * \param strbuf what???
 234  * \param nbsp If nonzero, spaces are converted to non-breaking spaces.
 235  * \param nolinebreaks if set, linebreaks are removed from the string.
 236  */
 237 void escputs1(char *strbuf, int nbsp, int nolinebreaks)
 238 {
 239         char *buf;
 240
 241         if (strbuf == NULL) return;
 242         buf = malloc( (3 * strlen(strbuf)) + SIZ );
 243         stresc(buf, strbuf, nbsp, nolinebreaks);
 244         wprintf("%s", buf);
 245         free(buf);
 246 }
 247
 248 /**
 249  * \brief static wrapper for ecsputs1
 250  * \param strbuf buffer to print escaped to client
 251  */
 252 void escputs(char *strbuf)
 253 {
 254         escputs1(strbuf, 0, 0);
 255 }
 256
 257 /**
 258  * \brief Escape a string for feeding out as a URL.
 259  * \param outbuf the output buffer
 260  * \param strbuf the input buffer
 261  */
 262 void urlesc(char *outbuf, char *strbuf)
 263 {
 264         int a, b, c;
 265         char *ec = " #&;`'|*?-~<>^()[]{}$\"\\";
 266
 267         strcpy(outbuf, "");
 268
 269         for (a = 0; a < strlen(strbuf); ++a) {
 270                 c = 0;
 271                 for (b = 0; b < strlen(ec); ++b) {
 272                         if (strbuf[a] == ec[b])
 273                                 c = 1;
 274                 }
 275                 b = strlen(outbuf);
 276                 if (c == 1)
 277                         sprintf(&outbuf[b], "%%%02x", strbuf[a]);
 278                 else
 279                         sprintf(&outbuf[b], "%c", strbuf[a]);
 280         }
 281 }
 282
 283 /**
 284  * \brief urlescape buffer and print it to the client
 285  * \param strbuf buffer to urlescape
 286  */
 287 void urlescputs(char *strbuf)
 288 {
 289         char outbuf[SIZ];
 290
 291         urlesc(outbuf, strbuf);
 292         wprintf("%s", outbuf);
 293 }
 294
 295
 296 /**
 297  * \brief Copy a string, escaping characters for JavaScript strings.
 298  * \param target output string
 299  * \param strbuf input string
 300  */
 301 void jsesc(char *target, char *strbuf)
 302 {
 303         int a;
 304         strcpy(target, "");
 305
 306         for (a = 0; a < strlen(strbuf); ++a) {
 307                 if (strbuf[a] == '<')
 308                         strcat(target, "[");
 309                 else if (strbuf[a] == '>')
 310                         strcat(target, "]");
 311                 else if (strbuf[a] == '\"')
 312                         strcat(target, "&quot;");
 313                 else if (strbuf[a] == '&')
 314                         strcat(target, "&amp;;");
 315                 else if (strbuf[a] == '\'')
 316                         strcat(target, "\\'");
 317                 else {
 318                         strncat(target, &strbuf[a], 1);
 319                 }
 320         }
 321 }
 322
 323 /**
 324  * \brief escape and print java script
 325  * \param strbuf the js code
 326  */
 327 void jsescputs(char *strbuf)
 328 {
 329         char outbuf[SIZ];
 330
 331         jsesc(outbuf, strbuf);
 332         wprintf("%s", outbuf);
 333 }
 334
 335 /**
 336  * \brief Copy a string, escaping characters for message text hold
 337  * \param target target buffer
 338  * \param strbuf source buffer
 339  */
 340 void msgesc(char *target, char *strbuf)
 341 {
 342         int a;
 343         strcpy(target, "");
 344
 345         for (a = 0; a < strlen(strbuf); ++a) {
 346                 if (strbuf[a] == '\n')
 347                         strcat(target, " ");
 348                 else if (strbuf[a] == '\r')
 349                         strcat(target, " ");
 350                 else if (strbuf[a] == '\'')
 351                         strcat(target, "&#39;");
 352                 else {
 353                         strncat(target, &strbuf[a], 1);
 354                 }
 355         }
 356 }
 357
 358 /**
 359  * \brief print a string to the client after cleaning it with msgesc()
 360  * \param strbuf string to be printed
 361  */
 362 void msgescputs(char *strbuf) {
 363         char *outbuf;
 364
 365         if (strbuf == NULL) return;
 366         outbuf = malloc( (3 * strlen(strbuf)) + SIZ);
 367         msgesc(outbuf, strbuf);
 368         wprintf("%s", outbuf);
 369         free(outbuf);
 370 }
 371
 372
 373
 374
 375 /**
 376  * \brief Output all that important stuff that the browser will want to see
 377  */
 378 void output_headers(    int do_httpheaders,     /**< 1 = output HTTP headers                          */
 379                         int do_htmlhead,        /**< 1 = output HTML <head> section and <body> opener */
 380
 381                         int do_room_banner,     /**< 0=no, 1=yes,
 382                                                                  * 2 = I'm going to embed my own, so don't open the
 383                                                                  *     <div id="content"> either.
 384                                                                  */
 385
 386                         int unset_cookies,      /**< 1 = session is terminating, so unset the cookies */
 387                         int suppress_check,     /**< 1 = suppress check for instant messages          */
 388                         int cache               /**< 1 = allow browser to cache this page             */
 389 ) {
 390         char cookie[1024];
 391         char httpnow[128];
 392
 393         wprintf("HTTP/1.1 200 OK\n");
 394         http_datestring(httpnow, sizeof httpnow, time(NULL));
 395
 396         if (do_httpheaders) {
 397                 wprintf("Content-type: text/html; charset=utf-8\r\n"
 398                         "Server: %s / %s\n"
 399                         "Connection: close\r\n",
 400                         SERVER, serv_info.serv_software
 401                 );
 402         }
 403
 404         if (cache) {
 405                 wprintf("Pragma: public\r\n"
 406                         "Cache-Control: max-age=3600, must-revalidate\r\n"
 407                         "Last-modified: %s\r\n",
 408                         httpnow
 409                 );
 410         }
 411         else {
 412                 wprintf("Pragma: no-cache\r\n"
 413                         "Cache-Control: no-store\r\n"
 414                 );
 415         }
 416
 417         stuff_to_cookie(cookie, WC->wc_session, WC->wc_username,
 418                         WC->wc_password, WC->wc_roomname);
 419
 420         if (unset_cookies) {
 421                 wprintf("Set-cookie: webcit=%s; path=/\r\n", unset);
 422         } else {
 423                 wprintf("Set-cookie: webcit=%s; path=/\r\n", cookie);
 424                 if (server_cookie != NULL) {
 425                         wprintf("%s\n", server_cookie);
 426                 }
 427         }
 428
 429         if (do_htmlhead) {
 430                 begin_burst();
 431                 if (!access("static.local/webcit.css", R_OK)) {
 432                         svprintf("CSSLOCAL", WCS_STRING,
 433                            "<link href=\"static.local/webcit.css\" rel=\"stylesheet\" type=\"text/css\">"
 434                         );
 435                 }
 436                 do_template("head");
 437         }
 438
 439         /** ICONBAR */
 440         if (do_htmlhead) {
 441
 442
 443                 /** check for ImportantMessages (these display in a div overlaying the main screen) */
 444                 if (strlen(WC->ImportantMessage) > 0) {
 445                         wprintf("<div id=\"important_message\">\n");
 446                         wprintf("<span class=\"imsg\">"
 447                                 "%s</span><br />\n", WC->ImportantMessage);
 448                         wprintf("</div>\n");
 449                         wprintf("<script type=\"text/javascript\">\n"
 450                                 "        setTimeout('hide_imsg_popup()', 3000); \n"
 451                                 "</script>\n");
 452                         safestrncpy(WC->ImportantMessage, "", sizeof WC->ImportantMessage);
 453                 }
 454
 455                 if ( (WC->logged_in) && (!unset_cookies) ) {
 456                         wprintf("<div id=\"iconbar\">");
 457                         do_selected_iconbar();
 458                         /** check for instant messages (these display in a new window) */
 459                         page_popup();
 460                         wprintf("</div>");
 461                 }
 462
 463                 if (do_room_banner == 1) {
 464                         wprintf("<div id=\"banner\">\n");
 465                         embed_room_banner(NULL, navbar_default);
 466                         wprintf("</div>\n");
 467                 }
 468         }
 469
 470         if (do_room_banner == 1) {
 471                 wprintf("<div id=\"content\">\n");
 472         }
 473 }
 474
 475
 476 /**
 477  * \brief Generic function to do an HTTP redirect.  Easy and fun.
 478  * \param whichpage target url to 302 to
 479  */
 480 void http_redirect(char *whichpage) {
 481         wprintf("HTTP/1.1 302 Moved Temporarily\n");
 482         wprintf("Location: %s\r\n", whichpage);
 483         wprintf("URI: %s\r\n", whichpage);
 484         wprintf("Content-type: text/html; charset=utf-8\r\n\r\n");
 485         wprintf("<html><body>");
 486         wprintf("Go <a href=\"%s\">here</A>.", whichpage);
 487         wprintf("</body></html>\n");
 488 }
 489
 490
 491
 492 /**
 493  * \brief Output a piece of content to the web browser
 494  */
 495 void http_transmit_thing(char *thing, size_t length, char *content_type,
 496                          int is_static) {
 497
 498         output_headers(0, 0, 0, 0, 0, is_static);
 499
 500         wprintf("Content-type: %s\r\n"
 501                 "Server: %s\r\n"
 502                 "Connection: close\r\n",
 503                 content_type,
 504                 SERVER);
 505
 506 #ifdef HAVE_ZLIB
 507         /** If we can send the data out compressed, please do so. */
 508         if (WC->gzip_ok) {
 509                 char *compressed_data = NULL;
 510                 uLongf compressed_len;
 511
 512                 compressed_len = (uLongf) ((length * 101) / 100) + 100;
 513                 compressed_data = malloc(compressed_len);
 514
 515                 if (compress_gzip((Bytef *) compressed_data,
 516                                   &compressed_len,
 517                                   (Bytef *) thing,
 518                                   (uLongf) length, Z_BEST_SPEED) == Z_OK) {
 519                         wprintf("Content-encoding: gzip\r\n"
 520                                 "Content-length: %ld\r\n"
 521                                 "\r\n",
 522                                 (long) compressed_len
 523                         );
 524                         client_write(compressed_data, (size_t)compressed_len);
 525                         free(compressed_data);
 526                         return;
 527                 }
 528         }
 529 #endif
 530
 531         /** No compression ... just send it out as-is */
 532         wprintf("Content-length: %ld\r\n"
 533                 "\r\n",
 534                 (long) length
 535         );
 536         client_write(thing, (size_t)length);
 537 }
 538
 539
 540
 541 /**
 542  * \brief dump out static pages from disk
 543  * \param what the file urs to print
 544  */
 545 void output_static(char *what)
 546 {
 547         FILE *fp;
 548         struct stat statbuf;
 549         off_t bytes;
 550         char *bigbuffer;
 551         char content_type[128];
 552
 553         fp = fopen(what, "rb");
 554         if (fp == NULL) {
 555                 lprintf(9, "output_static('%s')  -- NOT FOUND --\n", what);
 556                 wprintf("HTTP/1.1 404 %s\n", strerror(errno));
 557                 wprintf("Content-Type: text/plain\r\n");
 558                 wprintf("\r\n");
 559                 wprintf("Cannot open %s: %s\n", what, strerror(errno));
 560         } else {
 561                 if (!strncasecmp(&what[strlen(what) - 4], ".gif", 4))
 562                         safestrncpy(content_type, "image/gif", sizeof content_type);
 563                 else if (!strncasecmp(&what[strlen(what) - 4], ".txt", 4))
 564                         safestrncpy(content_type, "text/plain", sizeof content_type);
 565                 else if (!strncasecmp(&what[strlen(what) - 4], ".css", 4))
 566                         safestrncpy(content_type, "text/css", sizeof content_type);
 567                 else if (!strncasecmp(&what[strlen(what) - 4], ".jpg", 4))
 568                         safestrncpy(content_type, "image/jpeg", sizeof content_type);
 569                 else if (!strncasecmp(&what[strlen(what) - 4], ".png", 4))
 570                         safestrncpy(content_type, "image/png", sizeof content_type);
 571                 else if (!strncasecmp(&what[strlen(what) - 4], ".ico", 4))
 572                         safestrncpy(content_type, "image/x-icon", sizeof content_type);
 573                 else if (!strncasecmp(&what[strlen(what) - 5], ".html", 5))
 574                         safestrncpy(content_type, "text/html", sizeof content_type);
 575                 else if (!strncasecmp(&what[strlen(what) - 4], ".htm", 4))
 576                         safestrncpy(content_type, "text/html", sizeof content_type);
 577                 else if (!strncasecmp(&what[strlen(what) - 4], ".wml", 4))
 578                         safestrncpy(content_type, "text/vnd.wap.wml", sizeof content_type);
 579                 else if (!strncasecmp(&what[strlen(what) - 5], ".wmls", 5))
 580                         safestrncpy(content_type, "text/vnd.wap.wmlscript", sizeof content_type);
 581                 else if (!strncasecmp(&what[strlen(what) - 5], ".wmlc", 5))
 582                         safestrncpy(content_type, "application/vnd.wap.wmlc", sizeof content_type);
 583                 else if (!strncasecmp(&what[strlen(what) - 6], ".wmlsc", 6))
 584                         safestrncpy(content_type, "application/vnd.wap.wmlscriptc", sizeof content_type);
 585                 else if (!strncasecmp(&what[strlen(what) - 5], ".wbmp", 5))
 586                         safestrncpy(content_type, "image/vnd.wap.wbmp", sizeof content_type);
 587                 else if (!strncasecmp(&what[strlen(what) - 3], ".js", 3))
 588                         safestrncpy(content_type, "text/javascript", sizeof content_type);
 589                 else
 590                         safestrncpy(content_type, "application/octet-stream", sizeof content_type);
 591
 592                 fstat(fileno(fp), &statbuf);
 593                 bytes = statbuf.st_size;
 594                 bigbuffer = malloc(bytes + 2);
 595                 fread(bigbuffer, bytes, 1, fp);
 596                 fclose(fp);
 597
 598                 lprintf(9, "output_static('%s')  %s\n", what, content_type);
 599                 http_transmit_thing(bigbuffer, (size_t)bytes, content_type, 1);
 600                 free(bigbuffer);
 601         }
 602         if (!strcasecmp(bstr("force_close_session"), "yes")) {
 603                 end_webcit_session();
 604         }
 605 }
 606
 607
 608 /**
 609  * \brief When the browser requests an image file from the Citadel server,
 610  * this function is called to transmit it.
 611  */
 612 void output_image()
 613 {
 614         char buf[SIZ];
 615         char *xferbuf = NULL;
 616         off_t bytes;
 617
 618         serv_printf("OIMG %s|%s", bstr("name"), bstr("parm"));
 619         serv_getln(buf, sizeof buf);
 620         if (buf[0] == '2') {
 621                 bytes = extract_long(&buf[4], 0);
 622                 xferbuf = malloc(bytes + 2);
 623
 624                 /** Read it from the server */
 625                 read_server_binary(xferbuf, bytes);
 626                 serv_puts("CLOS");
 627                 serv_getln(buf, sizeof buf);
 628
 629                 /** Write it to the browser */
 630                 http_transmit_thing(xferbuf, (size_t)bytes, "image/gif", 0);
 631                 free(xferbuf);
 632
 633         } else {
 634                 /**
 635                  * Instead of an ugly 404, send a 1x1 transparent GIF
 636                  * when there's no such image on the server.
 637                  */
 638                 output_static("static/blank.gif");
 639         }
 640
 641
 642
 643 }
 644
 645 /**
 646  * \brief Generic function to output an arbitrary MIME part from an arbitrary
 647  *        message number on the server.
 648  *
 649  * \param msgnum                Number of the item on the citadel server
 650  * \param partnum               The MIME part to be output
 651  * \param force_download        Nonzero to force set the Content-Type: header
 652  *                              to "application/octet-stream"
 653  */
 654 void mimepart(char *msgnum, char *partnum, int force_download)
 655 {
 656         char buf[256];
 657         off_t bytes;
 658         char content_type[256];
 659         char *content = NULL;
 660
 661         serv_printf("OPNA %s|%s", msgnum, partnum);
 662         serv_getln(buf, sizeof buf);
 663         if (buf[0] == '2') {
 664                 bytes = extract_long(&buf[4], 0);
 665                 content = malloc(bytes + 2);
 666                 if (force_download) {
 667                         strcpy(content_type, "application/octet-stream");
 668                 }
 669                 else {
 670                         extract_token(content_type, &buf[4], 3, '|', sizeof content_type);
 671                 }
 672                 output_headers(0, 0, 0, 0, 0, 0);
 673                 read_server_binary(content, bytes);
 674                 serv_puts("CLOS");
 675                 serv_getln(buf, sizeof buf);
 676                 http_transmit_thing(content, bytes, content_type, 0);
 677                 free(content);
 678         } else {
 679                 wprintf("HTTP/1.1 404 %s\n", &buf[4]);
 680                 output_headers(0, 0, 0, 0, 0, 0);
 681                 wprintf("Content-Type: text/plain\r\n");
 682                 wprintf("\r\n");
 683                 wprintf(_("An error occurred while retrieving this part: %s\n"), &buf[4]);
 684         }
 685
 686 }
 687
 688
 689 /**
 690  * \brief Read any MIME part of a message, from the server, into memory.
 691  * \param msgnum number of the message on the citadel server
 692  * \param partnum the MIME part to be loaded
 693  */
 694 char *load_mimepart(long msgnum, char *partnum)
 695 {
 696         char buf[SIZ];
 697         off_t bytes;
 698         char content_type[SIZ];
 699         char *content;
 700
 701         serv_printf("DLAT %ld|%s", msgnum, partnum);
 702         serv_getln(buf, sizeof buf);
 703         if (buf[0] == '6') {
 704                 bytes = extract_long(&buf[4], 0);
 705                 extract_token(content_type, &buf[4], 3, '|', sizeof content_type);
 706
 707                 content = malloc(bytes + 2);
 708                 serv_read(content, bytes);
 709
 710                 content[bytes] = 0;     /* null terminate for good measure */
 711                 return(content);
 712         }
 713         else {
 714                 return(NULL);
 715         }
 716
 717 }
 718
 719
 720 /**
 721  * \brief Convenience functions to display a page containing only a string
 722  * \param titlebarcolor color of the titlebar of the frame
 723  * \param titlebarmsg text to display in the title bar
 724  * \param messagetext body of the box
 725  */
 726 void convenience_page(char *titlebarcolor, char *titlebarmsg, char *messagetext)
 727 {
 728         wprintf("HTTP/1.1 200 OK\n");
 729         output_headers(1, 1, 2, 0, 0, 0);
 730         wprintf("<div id=\"banner\">\n");
 731         wprintf("<table width=100%% border=0 bgcolor=\"#%s\"><tr><td>", titlebarcolor);
 732         wprintf("<span class=\"titlebar\">%s</span>\n", titlebarmsg);
 733         wprintf("</td></tr></table>\n");
 734         wprintf("</div>\n<div id=\"content\">\n");
 735         escputs(messagetext);
 736
 737         wprintf("<hr />\n");
 738         wDumpContent(1);
 739 }
 740
 741
 742 /**
 743  * \brief Display a blank page.
 744  */
 745 void blank_page(void) {
 746         output_headers(1, 1, 0, 0, 0, 0);
 747         wDumpContent(2);
 748 }
 749
 750
 751 /**
 752  * \brief A template has been requested
 753  */
 754 void url_do_template(void) {
 755         do_template(bstr("template"));
 756 }
 757
 758
 759
 760 /**
 761  * \brief Offer to make any page the user's "start page."
 762  */
 763 void offer_start_page(void) {
 764         wprintf("<a href=\"change_start_page?startpage=");
 765         urlescputs(WC->this_page);
 766         wprintf("\">");
 767         wprintf(_("Make this my start page"));
 768         wprintf("</a>");
 769 /*
 770         wprintf("<br/><a href=\"rss?room=");
 771         urlescputs(WC->wc_roomname);
 772         wprintf("\" title=\"RSS 2.0 feed for ");
 773         escputs(WC->wc_roomname);
 774         wprintf("\"><img alt=\"RSS\" border=\"0\" src=\"static/xml_button.gif\"/></a>\n");
 775 */
 776 }
 777
 778
 779 /**
 780  * \brief Change the user's start page
 781  */
 782 void change_start_page(void) {
 783
 784         if (bstr("startpage") == NULL) {
 785                 safestrncpy(WC->ImportantMessage,
 786                         _("You no longer have a start page selected."),
 787                         sizeof WC->ImportantMessage);
 788                 display_main_menu();
 789                 return;
 790         }
 791
 792         set_preference("startpage", bstr("startpage"), 1);
 793
 794         output_headers(1, 1, 0, 0, 0, 0);
 795         do_template("newstartpage");
 796         wDumpContent(1);
 797 }
 798
 799
 800
 801 /**
 802  * \brief convenience function to indicate success
 803  * \param successmessage the mesage itself
 804  */
 805 void display_success(char *successmessage)
 806 {
 807         convenience_page("007700", "OK", successmessage);
 808 }
 809
 810
 811 /**
 812  * \brief Authorization required page
 813  * This is probably temporary and should be revisited
 814  * \param message message to put in header
 815 */
 816 void authorization_required(const char *message)
 817 {
 818         wprintf("HTTP/1.1 401 Authorization Required\r\n");
 819         wprintf("WWW-Authenticate: Basic realm=\"\"\r\n", serv_info.serv_humannode);
 820         wprintf("Content-Type: text/html\r\n\r\n");
 821         wprintf("<h1>");
 822         wprintf(_("Authorization Required"));
 823         wprintf("</h1>\r\n");
 824         wprintf(_("The resource you requested requires a valid username and password. "
 825                 "You could not be logged in: %s\n"), message);
 826         wDumpContent(0);
 827 }
 828
 829 /**
 830  * \brief This function is called by the MIME parser to handle data uploaded by
 831  *        the browser.  Form data, uploaded files, and the data from HTTP PUT
 832  *        operations (such as those found in GroupDAV) all arrive this way.
 833  *
 834  * \param name Name of the item being uploaded
 835  * \param filename Filename of the item being uploaded
 836  * \param partnum MIME part identifier (not needed)
 837  * \param disp MIME content disposition (not needed)
 838  * \param content The actual data
 839  * \param cbtype MIME content-type
 840  * \param cbcharset Character set
 841  * \param length Content length
 842  * \param encoding MIME encoding type (not needed)
 843  * \param userdata Not used here
 844  */
 845 void upload_handler(char *name, char *filename, char *partnum, char *disp,
 846                         void *content, char *cbtype, char *cbcharset,
 847                         size_t length, char *encoding, void *userdata)
 848 {
 849         struct urlcontent *u;
 850
 851         lprintf(9, "upload_handler() name=%s, type=%s, len=%d\n", name, cbtype, length);
 852
 853         /* Form fields */
 854         if ( (length > 0) && (strlen(cbtype) == 0) ) {
 855                 u = (struct urlcontent *) malloc(sizeof(struct urlcontent));
 856                 u->next = WC->urlstrings;
 857                 WC->urlstrings = u;
 858                 safestrncpy(u->url_key, name, sizeof(u->url_key));
 859                 u->url_data = malloc(length + 1);
 860                 memcpy(u->url_data, content, length);
 861                 u->url_data[length] = 0;
 862         }
 863
 864         /** Uploaded files */
 865         if ( (length > 0) && (strlen(cbtype) > 0) ) {
 866                 WC->upload = malloc(length);
 867                 if (WC->upload != NULL) {
 868                         WC->upload_length = length;
 869                         safestrncpy(WC->upload_filename, filename,
 870                                         sizeof(WC->upload_filename));
 871                         safestrncpy(WC->upload_content_type, cbtype,
 872                                         sizeof(WC->upload_content_type));
 873                         memcpy(WC->upload, content, length);
 874                 }
 875                 else {
 876                         lprintf(3, "malloc() failed: %s\n", strerror(errno));
 877                 }
 878         }
 879
 880 }
 881
 882 /**
 883  * \brief Convenience functions to wrap around asynchronous ajax responses
 884  */
 885 void begin_ajax_response(void) {
 886         output_headers(0, 0, 0, 0, 0, 0);
 887
 888         wprintf("Content-type: text/html; charset=UTF-8\r\n"
 889                 "Server: %s\r\n"
 890                 "Connection: close\r\n"
 891                 "Pragma: no-cache\r\n"
 892                 "Cache-Control: no-cache\r\n",
 893                 SERVER);
 894         begin_burst();
 895 }
 896
 897 /**
 898  * \brief print ajax response footer
 899  */
 900 void end_ajax_response(void) {
 901         wprintf("\r\n");
 902         wDumpContent(0);
 903 }
 904
 905 /**
 906  * \brief Wraps a Citadel server command in an AJAX transaction.
 907  */
 908 void ajax_servcmd(void)
 909 {
 910         char buf[1024];
 911         char gcontent[1024];
 912         char *junk;
 913         size_t len;
 914
 915         begin_ajax_response();
 916
 917         serv_printf("%s", bstr("g_cmd"));
 918         serv_getln(buf, sizeof buf);
 919         wprintf("%s\n", buf);
 920
 921         if (buf[0] == '8') {
 922                 serv_printf("\n\n000");
 923         }
 924         if ((buf[0] == '1') || (buf[0] == '8')) {
 925                 while (serv_getln(gcontent, sizeof gcontent), strcmp(gcontent, "000")) {
 926                         wprintf("%s\n", gcontent);
 927                 }
 928                 wprintf("000");
 929         }
 930         if (buf[0] == '4') {
 931                 text_to_server(bstr("g_input"));
 932                 serv_puts("000");
 933         }
 934         if (buf[0] == '6') {
 935                 len = atol(&buf[4]);
 936                 junk = malloc(len);
 937                 serv_read(junk, len);
 938                 free(junk);
 939         }
 940         if (buf[0] == '7') {
 941                 len = atol(&buf[4]);
 942                 junk = malloc(len);
 943                 memset(junk, 0, len);
 944                 serv_write(junk, len);
 945                 free(junk);
 946         }
 947
 948         end_ajax_response();
 949
 950         /**
 951          * This is kind of an ugly hack, but this is the only place it can go.
 952          * If the command was GEXP, then the instant messenger window must be
 953          * running, so reset the "last_pager_check" watchdog timer so
 954          * that page_popup() doesn't try to open it a second time.
 955          */
 956         if (!strncasecmp(bstr("g_cmd"), "GEXP", 4)) {
 957                 WC->last_pager_check = time(NULL);
 958         }
 959 }
 960
 961
 962 /**
 963  * \brief Helper function for the asynchronous check to see if we need
 964  * to open the instant messenger window.
 965  */
 966 void seconds_since_last_gexp(void)
 967 {
 968         char buf[256];
 969
 970         begin_ajax_response();
 971         if ( (time(NULL) - WC->last_pager_check) < 30) {
 972                 wprintf("NO\n");
 973         }
 974         else {
 975                 serv_puts("NOOP");
 976                 serv_getln(buf, sizeof buf);
 977                 if (buf[3] == '*') {
 978                         wprintf("YES");
 979                 }
 980                 else {
 981                         wprintf("NO");
 982                 }
 983         }
 984         end_ajax_response();
 985 }
 986
 987
 988
 989
 990 /**
 991  * \brief Entry point for WebCit transaction
 992  */
 993 void session_loop(struct httprequest *req)
 994 {
 995         char cmd[1024];
 996         char action[1024];
 997         char arg[8][128];
 998         size_t sizes[10];
 999         char *index[10];
1000         char buf[SIZ];
1001         char request_method[128];
1002         char pathname[1024];
1003         int a, b, nBackDots, nEmpty;
1004         int ContentLength = 0;
1005         int BytesRead = 0;
1006         char ContentType[512];
1007         char *content = NULL;
1008         char *content_end = NULL;
1009         struct httprequest *hptr;
1010         char browser_host[256];
1011         char user_agent[256];
1012         int body_start = 0;
1013         int is_static = 0;
1014         int n_static = 0;
1015         /**
1016          * We stuff these with the values coming from the client cookies,
1017          * so we can use them to reconnect a timed out session if we have to.
1018          */
1019         char c_username[SIZ];
1020         char c_password[SIZ];
1021         char c_roomname[SIZ];
1022         char c_httpauth_string[SIZ];
1023         char c_httpauth_user[SIZ];
1024         char c_httpauth_pass[SIZ];
1025         char cookie[SIZ];
1026
1027         safestrncpy(c_username, "", sizeof c_username);
1028         safestrncpy(c_password, "", sizeof c_password);
1029         safestrncpy(c_roomname, "", sizeof c_roomname);
1030         safestrncpy(c_httpauth_string, "", sizeof c_httpauth_string);
1031         safestrncpy(c_httpauth_user, DEFAULT_HTTPAUTH_USER, sizeof c_httpauth_user);
1032         safestrncpy(c_httpauth_pass, DEFAULT_HTTPAUTH_PASS, sizeof c_httpauth_pass);
1033         strcpy(browser_host, "");
1034
1035         WC->upload_length = 0;
1036         WC->upload = NULL;
1037         WC->vars = NULL;
1038         WC->is_wap = 0;
1039
1040         hptr = req;
1041         if (hptr == NULL) return;
1042
1043         safestrncpy(cmd, hptr->line, sizeof cmd);
1044         hptr = hptr->next;
1045         extract_token(request_method, cmd, 0, ' ', sizeof request_method);
1046         extract_token(pathname, cmd, 1, ' ', sizeof pathname);
1047
1048         /** Figure out the action */
1049         index[0] = action;
1050         sizes[0] = sizeof action;
1051         for (a=1; a<9; a++)
1052         {
1053                 index[a] = arg[a-1];
1054                 sizes[a] = sizeof arg[a-1];
1055         }
1056 ////    index[9] = &foo; todo
1057         nBackDots = 0;
1058         nEmpty = 0;
1059         for ( a = 0; a < 9; ++a)
1060         {
1061                 extract_token(index[a], pathname, a + 1, '/', sizes[a]);
1062                 if (strstr(index[a], "?")) *strstr(index[a], "?") = 0;
1063                 if (strstr(index[a], "&")) *strstr(index[a], "&") = 0;
1064                 if (strstr(index[a], " ")) *strstr(index[a], " ") = 0;
1065                 if ((index[a][0] == '.') && (index[a][1] == '.'))
1066                         nBackDots++;
1067                 if (index[a][0] == '\0')
1068                         nEmpty++;
1069         }
1070
1071         while (hptr != NULL) {
1072                 safestrncpy(buf, hptr->line, sizeof buf);
1073                 /* lprintf(9, "HTTP HEADER: %s\n", buf); */
1074                 hptr = hptr->next;
1075
1076                 if (!strncasecmp(buf, "Cookie: webcit=", 15)) {
1077                         safestrncpy(cookie, &buf[15], sizeof cookie);
1078                         cookie_to_stuff(cookie, NULL,
1079                                         c_username, sizeof c_username,
1080                                         c_password, sizeof c_password,
1081                                         c_roomname, sizeof c_roomname);
1082                 }
1083                 else if (!strncasecmp(buf, "Authorization: Basic ", 21)) {
1084                         CtdlDecodeBase64(c_httpauth_string, &buf[21], strlen(&buf[21]));
1085                         extract_token(c_httpauth_user, c_httpauth_string, 0, ':', sizeof c_httpauth_user);
1086                         extract_token(c_httpauth_pass, c_httpauth_string, 1, ':', sizeof c_httpauth_pass);
1087                 }
1088                 else if (!strncasecmp(buf, "Content-length: ", 16)) {
1089                         ContentLength = atoi(&buf[16]);
1090                 }
1091                 else if (!strncasecmp(buf, "Content-type: ", 14)) {
1092                         safestrncpy(ContentType, &buf[14], sizeof ContentType);
1093                 }
1094                 else if (!strncasecmp(buf, "User-agent: ", 12)) {
1095                         safestrncpy(user_agent, &buf[12], sizeof user_agent);
1096                 }
1097                 else if (!strncasecmp(buf, "X-Forwarded-Host: ", 18)) {
1098                         if (follow_xff) {
1099                                 safestrncpy(WC->http_host, &buf[18], sizeof WC->http_host);
1100                         }
1101                 }
1102                 else if (!strncasecmp(buf, "Host: ", 6)) {
1103                         if (strlen(WC->http_host) == 0) {
1104                                 safestrncpy(WC->http_host, &buf[6], sizeof WC->http_host);
1105                         }
1106                 }
1107                 else if (!strncasecmp(buf, "X-Forwarded-For: ", 17)) {
1108                         safestrncpy(browser_host, &buf[17], sizeof browser_host);
1109                         while (num_tokens(browser_host, ',') > 1) {
1110                                 remove_token(browser_host, 0, ',');
1111                         }
1112                         striplt(browser_host);
1113                 }
1114                 /** Only WAP gateways explicitly name this content-type */
1115                 else if (strstr(buf, "text/vnd.wap.wml")) {
1116                         WC->is_wap = 1;
1117                 }
1118         }
1119
1120         if (ContentLength > 0) {
1121                 content = malloc(ContentLength + SIZ);
1122                 memset(content, 0, ContentLength + SIZ);
1123                 sprintf(content, "Content-type: %s\n"
1124                                 "Content-length: %d\n\n",
1125                                 ContentType, ContentLength);
1126                 body_start = strlen(content);
1127
1128                 /** Read the entire input data at once. */
1129                 client_read(WC->http_sock, &content[BytesRead+body_start], ContentLength);
1130
1131                 if (!strncasecmp(ContentType, "application/x-www-form-urlencoded", 33)) {
1132                         addurls(&content[body_start]);
1133                 } else if (!strncasecmp(ContentType, "multipart", 9)) {
1134                         content_end = content + ContentLength + body_start;
1135                         mime_parser(content, content_end, *upload_handler, NULL, NULL, NULL, 0);
1136                 }
1137         } else {
1138                 content = NULL;
1139         }
1140
1141         /** make a note of where we are in case the user wants to save it */
1142         safestrncpy(WC->this_page, cmd, sizeof(WC->this_page));
1143         remove_token(WC->this_page, 2, ' ');
1144         remove_token(WC->this_page, 0, ' ');
1145
1146         /** If there are variables in the URL, we must grab them now */
1147         for (a = 0; a < strlen(cmd); ++a) {
1148                 if ((cmd[a] == '?') || (cmd[a] == '&')) {
1149                         for (b = a; b < strlen(cmd); ++b)
1150                                 if (isspace(cmd[b]))
1151                                         cmd[b] = 0;
1152                         addurls(&cmd[a + 1]);
1153                         cmd[a] = 0;
1154                 }
1155         }
1156
1157         /** If it's a "force 404" situation then display the error and bail. */
1158         if (!strcmp(action, "404")) {
1159                 wprintf("HTTP/1.1 404 Not found\r\n");
1160                 wprintf("Content-Type: text/plain\r\n");
1161                 wprintf("\r\n");
1162                 wprintf("Not found\r\n");
1163                 goto SKIP_ALL_THIS_CRAP;
1164         }
1165
1166         /** Static content can be sent without connecting to Citadel. */
1167         is_static = 0;
1168         for (a=0; a<ndirs; ++a) {
1169                 if (!strcasecmp(action, (char*)static_content_dirs[a])) { /* map web to disk location */
1170                         is_static = 1;
1171                         n_static = a;
1172                 }
1173         }
1174         if (is_static) {
1175                 if (nBackDots < 2)
1176                 {
1177                         snprintf(buf, sizeof buf, "%s/%s/%s/%s/%s/%s/%s/%s",
1178                                  static_dirs[n_static],
1179                                  index[1], index[2], index[3], index[4], index[5], index[6], index[7]);
1180                         for (a=0; a<8; ++a) {
1181                                 if (buf[strlen(buf)-1] == '/') {
1182                                         buf[strlen(buf)-1] = 0;
1183                                 }
1184                         }
1185                         for (a = 0; a < strlen(buf); ++a) {
1186                                 if (isspace(buf[a])) {
1187                                         buf[a] = 0;
1188                                 }
1189                         }
1190                         output_static(buf);
1191                 }
1192                 else
1193                 {
1194                         lprintf(9, "Suspicious request. Ignoring.");
1195                         wprintf("HTTP/1.1 404 Not found. Don't try to Trick me DUDE!\r\n");
1196                         wprintf("Content-Type: text/plain\r\n");
1197                         wprintf("\r\n");
1198                         wprintf("Not found. Don't play games on me!\r\n");
1199                 }
1200                 goto SKIP_ALL_THIS_CRAP;        /* Don't try to connect */
1201         }
1202
1203         /**
1204          * If we're not connected to a Citadel server, try to hook up the
1205          * connection now.
1206          */
1207         if (!WC->connected) {
1208                 if (!strcasecmp(ctdlhost, "uds")) {
1209                         /* unix domain socket */
1210                         sprintf(buf, "%s/citadel.socket", ctdlport);
1211                         WC->serv_sock = uds_connectsock(buf);
1212                 }
1213                 else {
1214                         /* tcp socket */
1215                         WC->serv_sock = tcp_connectsock(ctdlhost, ctdlport);
1216                 }
1217
1218                 if (WC->serv_sock < 0) {
1219                         do_logout();
1220                         goto SKIP_ALL_THIS_CRAP;
1221                 }
1222                 else {
1223                         WC->connected = 1;
1224                         serv_getln(buf, sizeof buf);    /** get the server welcome message */
1225
1226                         /**
1227                          * From what host is our user connecting?  Go with
1228                          * the host at the other end of the HTTP socket,
1229                          * unless we are following X-Forwarded-For: headers
1230                          * and such a header has already turned up something.
1231                          */
1232                         if ( (!follow_xff) || (strlen(browser_host) == 0) ) {
1233                                 locate_host(browser_host, WC->http_sock);
1234                         }
1235
1236                         get_serv_info(browser_host, user_agent);
1237                         if (serv_info.serv_rev_level < MINIMUM_CIT_VERSION) {
1238                                 wprintf(_("You are connected to a Citadel "
1239                                         "server running Citadel %d.%02d. \n"
1240                                         "In order to run this version of WebCit "
1241                                         "you must also have Citadel %d.%02d or"
1242                                         " newer.\n\n\n"),
1243                                                 serv_info.serv_rev_level / 100,
1244                                                 serv_info.serv_rev_level % 100,
1245                                                 MINIMUM_CIT_VERSION / 100,
1246                                                 MINIMUM_CIT_VERSION % 100
1247                                         );
1248                                 end_webcit_session();
1249                                 goto SKIP_ALL_THIS_CRAP;
1250                         }
1251                 }
1252         }
1253
1254         /**
1255          * Functions which can be performed without logging in
1256          */
1257         if (!strcasecmp(action, "listsub")) {
1258                 do_listsub();
1259                 goto SKIP_ALL_THIS_CRAP;
1260         }
1261 #ifdef WEBCIT_WITH_CALENDAR_SERVICE
1262         if (!strcasecmp(action, "freebusy")) {
1263                 do_freebusy(cmd);
1264                 goto SKIP_ALL_THIS_CRAP;
1265         }
1266 #endif
1267
1268         /**
1269          * If we're not logged in, but we have HTTP Authentication data,
1270          * try logging in to Citadel using that.
1271          */
1272         if ((!WC->logged_in)
1273            && (strlen(c_httpauth_user) > 0)
1274            && (strlen(c_httpauth_pass) > 0)) {
1275                 serv_printf("USER %s", c_httpauth_user);
1276                 serv_getln(buf, sizeof buf);
1277                 if (buf[0] == '3') {
1278                         serv_printf("PASS %s", c_httpauth_pass);
1279                         serv_getln(buf, sizeof buf);
1280                         if (buf[0] == '2') {
1281                                 become_logged_in(c_httpauth_user,
1282                                                 c_httpauth_pass, buf);
1283                                 safestrncpy(WC->httpauth_user, c_httpauth_user, sizeof WC->httpauth_user);
1284                                 safestrncpy(WC->httpauth_pass, c_httpauth_pass, sizeof WC->httpauth_pass);
1285                         } else {
1286                                 /** Should only display when password is wrong */
1287                                 authorization_required(&buf[4]);
1288                                 goto SKIP_ALL_THIS_CRAP;
1289                         }
1290                 }
1291         }
1292
1293         /** This needs to run early */
1294         if (!strcasecmp(action, "rss")) {
1295                 display_rss(bstr("room"), request_method);
1296                 goto SKIP_ALL_THIS_CRAP;
1297         }
1298
1299         /**
1300          * The GroupDAV stuff relies on HTTP authentication instead of
1301          * our session's authentication.
1302          */
1303         if (!strncasecmp(action, "groupdav", 8)) {
1304                 groupdav_main(req, ContentType, /* do GroupDAV methods */
1305                         ContentLength, content+body_start);
1306                 if (!WC->logged_in) {
1307                         WC->killthis = 1;       /* If not logged in, don't */
1308                 }                               /* keep the session active */
1309                 goto SKIP_ALL_THIS_CRAP;
1310         }
1311
1312
1313         /**
1314          * Automatically send requests with any method other than GET or
1315          * POST to the GroupDAV code as well.
1316          */
1317         if ((strcasecmp(request_method, "GET")) && (strcasecmp(request_method, "POST"))) {
1318                 groupdav_main(req, ContentType, /** do GroupDAV methods */
1319                         ContentLength, content+body_start);
1320                 if (!WC->logged_in) {
1321                         WC->killthis = 1;       /** If not logged in, don't */
1322                 }                               /** keep the session active */
1323                 goto SKIP_ALL_THIS_CRAP;
1324         }
1325
1326         /**
1327          * If we're not logged in, but we have username and password cookies
1328          * supplied by the browser, try using them to log in.
1329          */
1330         if ((!WC->logged_in)
1331            && (strlen(c_username) > 0)
1332            && (strlen(c_password) > 0)) {
1333                 serv_printf("USER %s", c_username);
1334                 serv_getln(buf, sizeof buf);
1335                 if (buf[0] == '3') {
1336                         serv_printf("PASS %s", c_password);
1337                         serv_getln(buf, sizeof buf);
1338                         if (buf[0] == '2') {
1339                                 become_logged_in(c_username, c_password, buf);
1340                         }
1341                 }
1342         }
1343         /**
1344          * If we don't have a current room, but a cookie specifying the
1345          * current room is supplied, make an effort to go there.
1346          */
1347         if ((strlen(WC->wc_roomname) == 0) && (strlen(c_roomname) > 0)) {
1348                 serv_printf("GOTO %s", c_roomname);
1349                 serv_getln(buf, sizeof buf);
1350                 if (buf[0] == '2') {
1351                         safestrncpy(WC->wc_roomname, c_roomname, sizeof WC->wc_roomname);
1352                 }
1353         }
1354
1355         if (!strcasecmp(action, "image")) {
1356                 output_image();
1357
1358                 /**
1359                  * All functions handled below this point ... make sure we log in
1360                  * before doing anything else!
1361                  */
1362         } else if ((!WC->logged_in) && (!strcasecmp(action, "login"))) {
1363                 do_login();
1364         } else if (!WC->logged_in) {
1365                 display_login(NULL);
1366         }
1367
1368         /**
1369          * Various commands...
1370          */
1371
1372         else if (!strcasecmp(action, "do_welcome")) {
1373                 do_welcome();
1374         } else if (!strcasecmp(action, "blank")) {
1375                 blank_page();
1376         } else if (!strcasecmp(action, "do_template")) {
1377                 url_do_template();
1378         } else if (!strcasecmp(action, "display_aide_menu")) {
1379                 display_aide_menu();
1380         } else if (!strcasecmp(action, "display_main_menu")) {
1381                 display_main_menu();
1382         } else if (!strcasecmp(action, "who")) {
1383                 who();
1384         } else if (!strcasecmp(action, "sslg")) {
1385                 seconds_since_last_gexp();
1386         } else if (!strcasecmp(action, "who_inner_html")) {
1387                 begin_ajax_response();
1388                 who_inner_div();
1389                 end_ajax_response();
1390         } else if (!strcasecmp(action, "iconbar_ajax_menu")) {
1391                 begin_ajax_response();
1392                 do_iconbar();
1393                 end_ajax_response();
1394         } else if (!strcasecmp(action, "iconbar_ajax_rooms")) {
1395                 begin_ajax_response();
1396                 do_iconbar_roomlist();
1397                 end_ajax_response();
1398         } else if (!strcasecmp(action, "knrooms")) {
1399                 knrooms();
1400         } else if (!strcasecmp(action, "gotonext")) {
1401                 slrp_highest();
1402                 gotonext();
1403         } else if (!strcasecmp(action, "skip")) {
1404                 gotonext();
1405         } else if (!strcasecmp(action, "ungoto")) {
1406                 ungoto();
1407         } else if (!strcasecmp(action, "dotgoto")) {
1408                 if (WC->wc_view != VIEW_MAILBOX) {      /* dotgoto acts like dotskip when we're in a mailbox view */
1409                         slrp_highest();
1410                 }
1411                 smart_goto(bstr("room"));
1412         } else if (!strcasecmp(action, "dotskip")) {
1413                 smart_goto(bstr("room"));
1414         } else if (!strcasecmp(action, "termquit")) {
1415                 do_logout();
1416         } else if (!strcasecmp(action, "readnew")) {
1417                 readloop("readnew");
1418         } else if (!strcasecmp(action, "readold")) {
1419                 readloop("readold");
1420         } else if (!strcasecmp(action, "readfwd")) {
1421                 readloop("readfwd");
1422         } else if (!strcasecmp(action, "headers")) {
1423                 readloop("headers");
1424         } else if (!strcasecmp(action, "do_search")) {
1425                 readloop("do_search");
1426         } else if (!strcasecmp(action, "msg")) {
1427                 embed_message(index[1]);
1428         } else if (!strcasecmp(action, "printmsg")) {
1429                 print_message(index[1]);
1430         } else if (!strcasecmp(action, "msgheaders")) {
1431                 display_headers(index[1]);
1432         } else if (!strcasecmp(action, "wiki")) {
1433                 display_wiki_page();
1434         } else if (!strcasecmp(action, "display_enter")) {
1435                 display_enter();
1436         } else if (!strcasecmp(action, "post")) {
1437                 post_message();
1438         } else if (!strcasecmp(action, "move_msg")) {
1439                 move_msg();
1440         } else if (!strcasecmp(action, "delete_msg")) {
1441                 delete_msg();
1442         } else if (!strcasecmp(action, "userlist")) {
1443                 userlist();
1444         } else if (!strcasecmp(action, "showuser")) {
1445                 showuser();
1446         } else if (!strcasecmp(action, "display_page")) {
1447                 display_page();
1448         } else if (!strcasecmp(action, "page_user")) {
1449                 page_user();
1450         } else if (!strcasecmp(action, "chat")) {
1451                 do_chat();
1452         } else if (!strcasecmp(action, "display_private")) {
1453                 display_private("", 0);
1454         } else if (!strcasecmp(action, "goto_private")) {
1455                 goto_private();
1456         } else if (!strcasecmp(action, "zapped_list")) {
1457                 zapped_list();
1458         } else if (!strcasecmp(action, "display_zap")) {
1459                 display_zap();
1460         } else if (!strcasecmp(action, "zap")) {
1461                 zap();
1462         } else if (!strcasecmp(action, "display_entroom")) {
1463                 display_entroom();
1464         } else if (!strcasecmp(action, "entroom")) {
1465                 entroom();
1466         } else if (!strcasecmp(action, "display_whok")) {
1467                 display_whok();
1468         } else if (!strcasecmp(action, "do_invt_kick")) {
1469                 do_invt_kick();
1470         } else if (!strcasecmp(action, "display_editroom")) {
1471                 display_editroom();
1472         } else if (!strcasecmp(action, "netedit")) {
1473                 netedit();
1474         } else if (!strcasecmp(action, "editroom")) {
1475                 editroom();
1476         } else if (!strcasecmp(action, "display_editinfo")) {
1477                 display_edit(_("Room info"), "EINF 0", "RINF", "editinfo", 1);
1478         } else if (!strcasecmp(action, "editinfo")) {
1479                 save_edit(_("Room info"), "EINF 1", 1);
1480         } else if (!strcasecmp(action, "display_editbio")) {
1481                 sprintf(buf, "RBIO %s", WC->wc_fullname);
1482                 display_edit(_("Your bio"), "NOOP", buf, "editbio", 3);
1483         } else if (!strcasecmp(action, "editbio")) {
1484                 save_edit(_("Your bio"), "EBIO", 0);
1485         } else if (!strcasecmp(action, "confirm_move_msg")) {
1486                 confirm_move_msg();
1487         } else if (!strcasecmp(action, "delete_room")) {
1488                 delete_room();
1489         } else if (!strcasecmp(action, "validate")) {
1490                 validate();
1491         } else if (!strcasecmp(action, "display_editpic")) {
1492                 display_graphics_upload(_("your photo"),
1493                                         "UIMG 0|_userpic_",
1494                                         "editpic");
1495         } else if (!strcasecmp(action, "editpic")) {
1496                 do_graphics_upload("UIMG 1|_userpic_");
1497         } else if (!strcasecmp(action, "display_editroompic")) {
1498                 display_graphics_upload(_("the icon for this room"),
1499                                         "UIMG 0|_roompic_",
1500                                         "editroompic");
1501         } else if (!strcasecmp(action, "editroompic")) {
1502                 do_graphics_upload("UIMG 1|_roompic_");
1503         } else if (!strcasecmp(action, "delete_floor")) {
1504                 delete_floor();
1505         } else if (!strcasecmp(action, "rename_floor")) {
1506                 rename_floor();
1507         } else if (!strcasecmp(action, "create_floor")) {
1508                 create_floor();
1509         } else if (!strcasecmp(action, "display_editfloorpic")) {
1510                 sprintf(buf, "UIMG 0|_floorpic_|%s",
1511                         bstr("which_floor"));
1512                 display_graphics_upload(_("the icon for this floor"),
1513                                         buf,
1514                                         "editfloorpic");
1515         } else if (!strcasecmp(action, "editfloorpic")) {
1516                 sprintf(buf, "UIMG 1|_floorpic_|%s",
1517                         bstr("which_floor"));
1518                 do_graphics_upload(buf);
1519         } else if (!strcasecmp(action, "display_reg")) {
1520                 display_reg(0);
1521         } else if (!strcasecmp(action, "display_changepw")) {
1522                 display_changepw();
1523         } else if (!strcasecmp(action, "changepw")) {
1524                 changepw();
1525         } else if (!strcasecmp(action, "display_edit_node")) {
1526                 display_edit_node();
1527         } else if (!strcasecmp(action, "edit_node")) {
1528                 edit_node();
1529         } else if (!strcasecmp(action, "display_netconf")) {
1530                 display_netconf();
1531         } else if (!strcasecmp(action, "display_confirm_delete_node")) {
1532                 display_confirm_delete_node();
1533         } else if (!strcasecmp(action, "delete_node")) {
1534                 delete_node();
1535         } else if (!strcasecmp(action, "display_add_node")) {
1536                 display_add_node();
1537         } else if (!strcasecmp(action, "add_node")) {
1538                 add_node();
1539         } else if (!strcasecmp(action, "terminate_session")) {
1540                 slrp_highest();
1541                 terminate_session();
1542         } else if (!strcasecmp(action, "edit_me")) {
1543                 edit_me();
1544         } else if (!strcasecmp(action, "display_siteconfig")) {
1545                 display_siteconfig();
1546         } else if (!strcasecmp(action, "chat_recv")) {
1547                 chat_recv();
1548         } else if (!strcasecmp(action, "chat_send")) {
1549                 chat_send();
1550         } else if (!strcasecmp(action, "siteconfig")) {
1551                 siteconfig();
1552         } else if (!strcasecmp(action, "display_generic")) {
1553                 display_generic();
1554         } else if (!strcasecmp(action, "do_generic")) {
1555                 do_generic();
1556         } else if (!strcasecmp(action, "ajax_servcmd")) {
1557                 ajax_servcmd();
1558         } else if (!strcasecmp(action, "display_menubar")) {
1559                 display_menubar(1);
1560         } else if (!strcasecmp(action, "mimepart")) {
1561                 mimepart(index[1], index[2], 0);
1562         } else if (!strcasecmp(action, "mimepart_download")) {
1563                 mimepart(index[1], index[2], 1);
1564         } else if (!strcasecmp(action, "edit_vcard")) {
1565                 edit_vcard();
1566         } else if (!strcasecmp(action, "submit_vcard")) {
1567                 submit_vcard();
1568         } else if (!strcasecmp(action, "select_user_to_edit")) {
1569                 select_user_to_edit(NULL, NULL);
1570         } else if (!strcasecmp(action, "display_edituser")) {
1571                 display_edituser(NULL, 0);
1572         } else if (!strcasecmp(action, "edituser")) {
1573                 edituser();
1574         } else if (!strcasecmp(action, "create_user")) {
1575                 create_user();
1576         } else if (!strcasecmp(action, "changeview")) {
1577                 change_view();
1578         } else if (!strcasecmp(action, "change_start_page")) {
1579                 change_start_page();
1580         } else if (!strcasecmp(action, "display_floorconfig")) {
1581                 display_floorconfig(NULL);
1582         } else if (!strcasecmp(action, "toggle_self_service")) {
1583                 toggle_self_service();
1584 #ifdef WEBCIT_WITH_CALENDAR_SERVICE
1585         } else if (!strcasecmp(action, "display_edit_task")) {
1586                 display_edit_task();
1587         } else if (!strcasecmp(action, "save_task")) {
1588                 save_task();
1589         } else if (!strcasecmp(action, "display_edit_event")) {
1590                 display_edit_event();
1591         } else if (!strcasecmp(action, "save_event")) {
1592                 save_event();
1593         } else if (!strcasecmp(action, "respond_to_request")) {
1594                 respond_to_request();
1595         } else if (!strcasecmp(action, "handle_rsvp")) {
1596                 handle_rsvp();
1597 #endif
1598         } else if (!strcasecmp(action, "summary")) {
1599                 summary();
1600         } else if (!strcasecmp(action, "summary_inner_div")) {
1601                 begin_ajax_response();
1602                 summary_inner_div();
1603                 end_ajax_response();
1604         } else if (!strcasecmp(action, "display_customize_iconbar")) {
1605                 display_customize_iconbar();
1606         } else if (!strcasecmp(action, "commit_iconbar")) {
1607                 commit_iconbar();
1608         } else if (!strcasecmp(action, "set_room_policy")) {
1609                 set_room_policy();
1610         } else if (!strcasecmp(action, "display_inetconf")) {
1611                 display_inetconf();
1612         } else if (!strcasecmp(action, "save_inetconf")) {
1613                 save_inetconf();
1614         } else if (!strcasecmp(action, "display_smtpqueue")) {
1615                 display_smtpqueue();
1616         } else if (!strcasecmp(action, "display_smtpqueue_inner_div")) {
1617                 display_smtpqueue_inner_div();
1618         } else if (!strcasecmp(action, "display_sieve")) {
1619                 display_sieve();
1620         } else if (!strcasecmp(action, "save_sieve")) {
1621                 save_sieve();
1622         } else if (!strcasecmp(action, "display_add_remove_scripts")) {
1623                 display_add_remove_scripts(NULL);
1624         } else if (!strcasecmp(action, "create_script")) {
1625                 create_script();
1626         } else if (!strcasecmp(action, "delete_script")) {
1627                 delete_script();
1628         } else if (!strcasecmp(action, "setup_wizard")) {
1629                 do_setup_wizard();
1630         } else if (!strcasecmp(action, "display_preferences")) {
1631                 display_preferences();
1632         } else if (!strcasecmp(action, "set_preferences")) {
1633                 set_preferences();
1634         } else if (!strcasecmp(action, "recp_autocomplete")) {
1635                 recp_autocomplete(bstr("recp"));
1636         } else if (!strcasecmp(action, "cc_autocomplete")) {
1637                 recp_autocomplete(bstr("cc"));
1638         } else if (!strcasecmp(action, "bcc_autocomplete")) {
1639                 recp_autocomplete(bstr("bcc"));
1640         } else if (!strcasecmp(action, "display_address_book_inner_div")) {
1641                 display_address_book_inner_div();
1642         } else if (!strcasecmp(action, "set_floordiv_expanded")) {
1643                 set_floordiv_expanded(index[1]);
1644         } else if (!strcasecmp(action, "diagnostics")) {
1645                 output_headers(1, 1, 1, 0, 0, 0);
1646                 wprintf("Session: %d<hr />\n", WC->wc_session);
1647                 wprintf("Command: <br /><PRE>\n");
1648                 escputs(cmd);
1649                 wprintf("</PRE><hr />\n");
1650                 wprintf("Variables: <br /><PRE>\n");
1651                 dump_vars();
1652                 wprintf("</PRE><hr />\n");
1653                 wDumpContent(1);
1654         } else if (!strcasecmp(action, "updatenote")) {
1655                 updatenote();
1656         } else if (!strcasecmp(action, "display_room_directory")) {
1657                 display_room_directory();
1658         } else if (!strcasecmp(action, "download_file")) {
1659                 download_file(index[1]);
1660         } else if (!strcasecmp(action, "upload_file")) {
1661                 upload_file();
1662         }
1663
1664         /** When all else fais, display the main menu. */
1665         else {
1666                 display_main_menu();
1667         }
1668
1669 SKIP_ALL_THIS_CRAP:
1670         fflush(stdout);
1671         if (content != NULL) {
1672                 free(content);
1673                 content = NULL;
1674         }
1675         free_urls();
1676         if (WC->upload_length > 0) {
1677                 free(WC->upload);
1678                 WC->upload_length = 0;
1679         }
1680 }
1681
1682
1683 /*@}*/