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 #include "webcit.h"
  10 #include "groupdav.h"
  11 #include "webserver.h"
  12
  13 #include <stdio.h>
  14 #include <stdarg.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 HashList *HandlerHash = NULL;
  24
  25
  26 void WebcitAddUrlHandler(const char * UrlString, long UrlSLen, WebcitHandlerFunc F, int IsAjax)
  27 {
  28         WebcitHandler *NewHandler;
  29
  30         if (HandlerHash == NULL)
  31                 HandlerHash = NewHash(1, NULL);
  32
  33         NewHandler = (WebcitHandler*) malloc(sizeof(WebcitHandler));
  34         NewHandler->F = F;
  35         NewHandler->IsAjax = IsAjax;
  36
  37         Put(HandlerHash, UrlString, UrlSLen, NewHandler, NULL);
  38 }
  39
  40 /*
  41  * remove escaped strings from i.e. the url string (like %20 for blanks)
  42  */
  43 long unescape_input(char *buf)
  44 {
  45         int a, b;
  46         char hex[3];
  47         long buflen;
  48         long len;
  49
  50         buflen = strlen(buf);
  51
  52         while ((buflen > 0) && (isspace(buf[buflen - 1]))){
  53                 buf[buflen - 1] = 0;
  54                 buflen --;
  55         }
  56
  57         a = 0;
  58         while (a < buflen) {
  59                 if (buf[a] == '+')
  60                         buf[a] = ' ';
  61                 if (buf[a] == '%') {
  62                         /* don't let % chars through, rather truncate the input. */
  63                         if (a + 2 > buflen) {
  64                                 buf[a] = '\0';
  65                                 buflen = a;
  66                         }
  67                         else {
  68                                 hex[0] = buf[a + 1];
  69                                 hex[1] = buf[a + 2];
  70                                 hex[2] = 0;
  71                                 b = 0;
  72                                 sscanf(hex, "%02x", &b);
  73                                 buf[a] = (char) b;
  74                                 len = buflen - a - 2;
  75                                 if (len > 0)
  76                                         memmove(&buf[a + 1], &buf[a + 3], len);
  77
  78                                 buflen -=2;
  79                         }
  80                 }
  81                 a++;
  82         }
  83         return a;
  84 }
  85
  86 void free_url(void *U)
  87 {
  88         urlcontent *u = (urlcontent*) U;
  89         free(u->url_data);
  90         free(u);
  91 }
  92
  93 /*
  94  * Extract variables from the URL.
  95  */
  96 void addurls(char *url)
  97 {
  98         char *aptr, *bptr, *eptr;
  99         char *up;
 100         char buf[SIZ] = "";
 101         int len, n, keylen;
 102         urlcontent *u;
 103         struct wcsession *WCC = WC;
 104
 105         if (WCC->urlstrings == NULL)
 106                 WCC->urlstrings = NewHash(1, NULL);
 107         eptr = buf + sizeof (buf);
 108         up = url;
 109         /** locate the = sign */
 110         n = safestrncpy(buf, up, sizeof buf);
 111         if (n < 0) /* hm, we exceeded the buffer... hmmm what to do now? */
 112                 n = -n;
 113         up = buf;
 114         while (!IsEmptyStr(up)) {
 115                 aptr = up;
 116                 while ((aptr < eptr) && (*aptr != '\0') && (*aptr != '='))
 117                         aptr++;
 118                 if (*aptr != '=')
 119                         return;
 120                 *aptr = '\0';
 121                 aptr++;
 122                 bptr = aptr;
 123                 while ((bptr < eptr) && (*bptr != '\0')
 124                       && (*bptr != '&') && (*bptr != '?') && (*bptr != ' ')) {
 125                         bptr++;
 126                 }
 127                 *bptr = '\0';
 128                 u = (urlcontent *) malloc(sizeof(urlcontent));
 129
 130                 keylen = safestrncpy(u->url_key, up, sizeof u->url_key);
 131                 if (keylen < 0){
 132                         lprintf(1, "URLkey to long! [%s]", up);
 133                         continue;
 134                 }
 135
 136                 Put(WCC->urlstrings, u->url_key, keylen, u, free_url);
 137                 len = bptr - aptr;
 138                 u->url_data = malloc(len + 2);
 139                 safestrncpy(u->url_data, aptr, len + 2);
 140                 u->url_data_size = unescape_input(u->url_data);
 141                 u->url_data[u->url_data_size] = '\0';
 142                 up = bptr;
 143                 ++up;
 144 /* uncomment the following line to see each parameter in the log
 145                 lprintf(9, "%s = [%ld]  %s\n", u->url_key, u->url_data_size, u->url_data);
 146 */
 147         }
 148 }
 149
 150 /*
 151  * free urlstring memory
 152  */
 153 void free_urls(void)
 154 {
 155         DeleteHash(&WC->urlstrings);
 156 }
 157
 158 /*
 159  * Diagnostic function to display the contents of all variables
 160  */
 161
 162 void dump_vars(void)
 163 {
 164         struct wcsession *WCC = WC;
 165         urlcontent *u;
 166         void *U;
 167         long HKLen;
 168         char *HKey;
 169         HashPos *Cursor;
 170
 171         Cursor = GetNewHashPos ();
 172         while (GetNextHashPos(WCC->urlstrings, Cursor, &HKLen, &HKey, &U)) {
 173                 u = (urlcontent*) U;
 174                 wprintf("%38s = %s\n", u->url_key, u->url_data);
 175         }
 176 }
 177
 178 /*
 179  * Return the value of a variable supplied to the current web page (from the url or a form)
 180  */
 181
 182 const char *XBstr(char *key, size_t keylen, size_t *len)
 183 {
 184         void *U;
 185
 186         if ((WC->urlstrings != NULL) &&
 187             GetHash(WC->urlstrings, key, keylen, &U)) {
 188                 *len = ((urlcontent *)U)->url_data_size;
 189                 return ((urlcontent *)U)->url_data;
 190         }
 191         else {
 192                 *len = 0;
 193                 return ("");
 194         }
 195 }
 196
 197 const char *XBSTR(char *key, size_t *len)
 198 {
 199         void *U;
 200
 201         if ((WC->urlstrings != NULL) &&
 202             GetHash(WC->urlstrings, key, strlen (key), &U)){
 203                 *len = ((urlcontent *)U)->url_data_size;
 204                 return ((urlcontent *)U)->url_data;
 205         }
 206         else {
 207                 *len = 0;
 208                 return ("");
 209         }
 210 }
 211
 212
 213 const char *BSTR(char *key)
 214 {
 215         void *U;
 216
 217         if ((WC->urlstrings != NULL) &&
 218             GetHash(WC->urlstrings, key, strlen (key), &U))
 219                 return ((urlcontent *)U)->url_data;
 220         else
 221                 return ("");
 222 }
 223
 224 const char *Bstr(char *key, size_t keylen)
 225 {
 226         void *U;
 227
 228         if ((WC->urlstrings != NULL) &&
 229             GetHash(WC->urlstrings, key, keylen, &U))
 230                 return ((urlcontent *)U)->url_data;
 231         else
 232                 return ("");
 233 }
 234
 235 long LBstr(char *key, size_t keylen)
 236 {
 237         void *U;
 238
 239         if ((WC->urlstrings != NULL) &&
 240             GetHash(WC->urlstrings, key, keylen, &U))
 241                 return atol(((urlcontent *)U)->url_data);
 242         else
 243                 return (0);
 244 }
 245
 246 long LBSTR(char *key)
 247 {
 248         void *U;
 249
 250         if ((WC->urlstrings != NULL) &&
 251             GetHash(WC->urlstrings, key, strlen(key), &U))
 252                 return atol(((urlcontent *)U)->url_data);
 253         else
 254                 return (0);
 255 }
 256
 257 int IBstr(char *key, size_t keylen)
 258 {
 259         void *U;
 260
 261         if ((WC->urlstrings != NULL) &&
 262             GetHash(WC->urlstrings, key, keylen, &U))
 263                 return atoi(((urlcontent *)U)->url_data);
 264         else
 265                 return (0);
 266 }
 267
 268 int IBSTR(char *key)
 269 {
 270         void *U;
 271
 272         if ((WC->urlstrings != NULL) &&
 273             GetHash(WC->urlstrings, key, strlen(key), &U))
 274                 return atoi(((urlcontent *)U)->url_data);
 275         else
 276                 return (0);
 277 }
 278
 279 int HaveBstr(char *key, size_t keylen)
 280 {
 281         void *U;
 282
 283         if ((WC->urlstrings != NULL) &&
 284             GetHash(WC->urlstrings, key, keylen, &U))
 285                 return ((urlcontent *)U)->url_data_size != 0;
 286         else
 287                 return (0);
 288 }
 289
 290 int HAVEBSTR(char *key)
 291 {
 292         void *U;
 293
 294         if ((WC->urlstrings != NULL) &&
 295             GetHash(WC->urlstrings, key, strlen(key), &U))
 296                 return ((urlcontent *)U)->url_data_size != 0;
 297         else
 298                 return (0);
 299 }
 300
 301
 302 int YesBstr(char *key, size_t keylen)
 303 {
 304         void *U;
 305
 306         if ((WC->urlstrings != NULL) &&
 307             GetHash(WC->urlstrings, key, keylen, &U))
 308                 return strcmp( ((urlcontent *)U)->url_data, "yes") == 0;
 309         else
 310                 return (0);
 311 }
 312
 313 int YESBSTR(char *key)
 314 {
 315         void *U;
 316
 317         if ((WC->urlstrings != NULL) &&
 318             GetHash(WC->urlstrings, key, strlen(key), &U))
 319                 return strcmp( ((urlcontent *)U)->url_data, "yes") == 0;
 320         else
 321                 return (0);
 322 }
 323
 324 /*
 325  * web-printing funcion. uses our vsnprintf wrapper
 326  */
 327 void wprintf(const char *format,...)
 328 {
 329         va_list arg_ptr;
 330         char wbuf[4096];
 331
 332         va_start(arg_ptr, format);
 333         vsnprintf(wbuf, sizeof wbuf, format, arg_ptr);
 334         va_end(arg_ptr);
 335
 336         client_write(wbuf, strlen(wbuf));
 337 }
 338
 339
 340 /*
 341  * wrap up an HTTP session, closes tags, etc.
 342  *
 343  * print_standard_html_footer should be set to:
 344  * 0 to transmit only,
 345  * 1 to append the main menu and closing tags,
 346  * 2 to append the closing tags only.
 347  */
 348 void wDumpContent(int print_standard_html_footer)
 349 {
 350         if (print_standard_html_footer) {
 351                 wprintf("</div>\n");    /* end of "text" div */
 352                 do_template("trailing");
 353         }
 354
 355         /* If we've been saving it all up for one big output burst,
 356          * go ahead and do that now.
 357          */
 358         end_burst();
 359 }
 360
 361
 362 /*
 363  * Copy a string, escaping characters which have meaning in HTML.
 364  *
 365  * target               target buffer
 366  * strbuf               source buffer
 367  * nbsp                 If nonzero, spaces are converted to non-breaking spaces.
 368  * nolinebreaks         if set, linebreaks are removed from the string.
 369  */
 370 long stresc(char *target, long tSize, char *strbuf, int nbsp, int nolinebreaks)
 371 {
 372         char *aptr, *bptr, *eptr;
 373
 374         *target = '\0';
 375         aptr = strbuf;
 376         bptr = target;
 377         eptr = target + tSize - 6; // our biggest unit to put in...
 378
 379         while ((bptr < eptr) && !IsEmptyStr(aptr) ){
 380                 if (*aptr == '<') {
 381                         memcpy(bptr, "&lt;", 4);
 382                         bptr += 4;
 383                 }
 384                 else if (*aptr == '>') {
 385                         memcpy(bptr, "&gt;", 4);
 386                         bptr += 4;
 387                 }
 388                 else if (*aptr == '&') {
 389                         memcpy(bptr, "&amp;", 5);
 390                         bptr += 5;
 391                 }
 392                 else if (*aptr == '\"') {
 393                         memcpy(bptr, "&quot;", 6);
 394                         bptr += 6;
 395                 }
 396                 else if (*aptr == '\'') {
 397                         memcpy(bptr, "&#39;", 5);
 398                         bptr += 5;
 399                 }
 400                 else if (*aptr == LB) {
 401                         *bptr = '<';
 402                         bptr ++;
 403                 }
 404                 else if (*aptr == RB) {
 405                         *bptr = '>';
 406                         bptr ++;
 407                 }
 408                 else if (*aptr == QU) {
 409                         *bptr ='"';
 410                         bptr ++;
 411                 }
 412                 else if ((*aptr == 32) && (nbsp == 1)) {
 413                         memcpy(bptr, "&nbsp;", 6);
 414                         bptr += 6;
 415                 }
 416                 else if ((*aptr == '\n') && (nolinebreaks)) {
 417                         *bptr='\0';     /* nothing */
 418                 }
 419                 else if ((*aptr == '\r') && (nolinebreaks)) {
 420                         *bptr='\0';     /* nothing */
 421                 }
 422                 else{
 423                         *bptr = *aptr;
 424                         bptr++;
 425                 }
 426                 aptr ++;
 427         }
 428         *bptr = '\0';
 429         if ((bptr = eptr - 1 ) && !IsEmptyStr(aptr) )
 430                 return -1;
 431         return (bptr - target);
 432 }
 433
 434 void escputs1(char *strbuf, int nbsp, int nolinebreaks)
 435 {
 436         char *buf;
 437         long Siz;
 438
 439         if (strbuf == NULL) return;
 440         Siz = (3 * strlen(strbuf)) + SIZ ;
 441         buf = malloc(Siz);
 442         stresc(buf, Siz, strbuf, nbsp, nolinebreaks);
 443         wprintf("%s", buf);
 444         free(buf);
 445 }
 446
 447 /*
 448  * static wrapper for ecsputs1
 449  */
 450 void escputs(char *strbuf)
 451 {
 452         escputs1(strbuf, 0, 0);
 453 }
 454
 455
 456 /*
 457  * urlescape buffer and print it to the client
 458  */
 459 void urlescputs(char *strbuf)
 460 {
 461         char outbuf[SIZ];
 462
 463         urlesc(outbuf, SIZ, strbuf);
 464         wprintf("%s", outbuf);
 465 }
 466
 467
 468 /*
 469  * Copy a string, escaping characters for JavaScript strings.
 470  */
 471 void jsesc(char *target, size_t tlen, char *strbuf)
 472 {
 473         int len;
 474         char *tend;
 475         char *send;
 476         char *tptr;
 477         char *sptr;
 478
 479         target[0]='\0';
 480         len = strlen (strbuf);
 481         send = strbuf + len;
 482         tend = target + tlen;
 483         sptr = strbuf;
 484         tptr = target;
 485
 486         while (!IsEmptyStr(sptr) &&
 487                (sptr < send) &&
 488                (tptr < tend)) {
 489
 490                 if (*sptr == '<')
 491                         *tptr = '[';
 492                 else if (*sptr == '>')
 493                         *tptr = ']';
 494                 else if (*sptr == '\'') {
 495                         if (tend - tptr < 3)
 496                                 return;
 497                         *(tptr++) = '\\';
 498                         *tptr = '\'';
 499                 }
 500                 else if (*sptr == '"') {
 501                         if (tend - tptr < 8)
 502                                 return;
 503                         *(tptr++) = '&';
 504                         *(tptr++) = 'q';
 505                         *(tptr++) = 'u';
 506                         *(tptr++) = 'o';
 507                         *(tptr++) = 't';
 508                         *tptr = ';';
 509                 }
 510                 else if (*sptr == '&') {
 511                         if (tend - tptr < 7)
 512                                 return;
 513                         *(tptr++) = '&';
 514                         *(tptr++) = 'a';
 515                         *(tptr++) = 'm';
 516                         *(tptr++) = 'p';
 517                         *tptr = ';';
 518                 } else {
 519                         *tptr = *sptr;
 520                 }
 521                 tptr++; sptr++;
 522         }
 523         *tptr = '\0';
 524 }
 525
 526 /*
 527  * escape and print javascript
 528  */
 529 void jsescputs(char *strbuf)
 530 {
 531         char outbuf[SIZ];
 532
 533         jsesc(outbuf, SIZ, strbuf);
 534         wprintf("%s", outbuf);
 535 }
 536
 537 /*
 538  * Copy a string, escaping characters for message text hold
 539  */
 540 void msgesc(char *target, size_t tlen, char *strbuf)
 541 {
 542         int len;
 543         char *tend;
 544         char *send;
 545         char *tptr;
 546         char *sptr;
 547
 548         target[0]='\0';
 549         len = strlen (strbuf);
 550         send = strbuf + len;
 551         tend = target + tlen;
 552         sptr = strbuf;
 553         tptr = target;
 554
 555         while (!IsEmptyStr(sptr) &&
 556                (sptr < send) &&
 557                (tptr < tend)) {
 558
 559                 if (*sptr == '\n')
 560                         *tptr = ' ';
 561                 else if (*sptr == '\r')
 562                         *tptr = ' ';
 563                 else if (*sptr == '\'') {
 564                         if (tend - tptr < 8)
 565                                 return;
 566                         *(tptr++) = '&';
 567                         *(tptr++) = '#';
 568                         *(tptr++) = '3';
 569                         *(tptr++) = '9';
 570                         *tptr = ';';
 571                 } else {
 572                         *tptr = *sptr;
 573                 }
 574                 tptr++; sptr++;
 575         }
 576         *tptr = '\0';
 577 }
 578
 579 /**
 580  * \brief print a string to the client after cleaning it with msgesc() and stresc()
 581  * \param strbuf string to be printed
 582  */
 583 void msgescputs1( char *strbuf)
 584 {
 585         char *outbuf;
 586         char *outbuf2;
 587         int buflen;
 588
 589         if (strbuf == NULL) return;
 590         buflen = 3 * strlen(strbuf) + SIZ;
 591         outbuf = malloc( buflen);
 592         outbuf2 = malloc( buflen);
 593         msgesc(outbuf, buflen, strbuf);
 594         stresc(outbuf2, buflen, outbuf, 0, 0);
 595         wprintf("%s", outbuf2);
 596         free(outbuf);
 597         free(outbuf2);
 598 }
 599
 600 /**
 601  * \brief print a string to the client after cleaning it with msgesc()
 602  * \param strbuf string to be printed
 603  */
 604 void msgescputs(char *strbuf) {
 605         char *outbuf;
 606         size_t len;
 607
 608         if (strbuf == NULL) return;
 609         len =  (3 * strlen(strbuf)) + SIZ;
 610         outbuf = malloc(len);
 611         msgesc(outbuf, len, strbuf);
 612         wprintf("%s", outbuf);
 613         free(outbuf);
 614 }
 615
 616
 617
 618
 619 /*
 620  * Output HTTP headers and leading HTML for a page
 621  */
 622 void output_headers(    int do_httpheaders,     /* 1 = output HTTP headers                          */
 623                         int do_htmlhead,        /* 1 = output HTML <head> section and <body> opener */
 624
 625                         int do_room_banner,     /* 0=no, 1=yes,
 626                                                  * 2 = I'm going to embed my own, so don't open the
 627                                                  *     <div id="content"> either.
 628                                                  */
 629
 630                         int unset_cookies,      /* 1 = session is terminating, so unset the cookies */
 631                         int suppress_check,     /* 1 = suppress check for instant messages          */
 632                         int cache               /* 1 = allow browser to cache this page             */
 633 ) {
 634         char cookie[1024];
 635         char httpnow[128];
 636
 637         wprintf("HTTP/1.1 200 OK\n");
 638         http_datestring(httpnow, sizeof httpnow, time(NULL));
 639
 640         if (do_httpheaders) {
 641                 wprintf("Content-type: text/html; charset=utf-8\r\n"
 642                         "Server: %s / %s\n"
 643                         "Connection: close\r\n",
 644                         PACKAGE_STRING, serv_info.serv_software
 645                 );
 646         }
 647
 648         if (cache) {
 649                 wprintf("Pragma: public\r\n"
 650                         "Cache-Control: max-age=3600, must-revalidate\r\n"
 651                         "Last-modified: %s\r\n",
 652                         httpnow
 653                 );
 654         }
 655         else {
 656                 wprintf("Pragma: no-cache\r\n"
 657                         "Cache-Control: no-store\r\n"
 658                         "Expires: -1\r\n"
 659                 );
 660         }
 661
 662         stuff_to_cookie(cookie, 1024, WC->wc_session, WC->wc_username,
 663                         WC->wc_password, WC->wc_roomname);
 664
 665         if (unset_cookies) {
 666                 wprintf("Set-cookie: webcit=%s; path=/\r\n", unset);
 667         } else {
 668                 wprintf("Set-cookie: webcit=%s; path=/\r\n", cookie);
 669                 if (server_cookie != NULL) {
 670                         wprintf("%s\n", server_cookie);
 671                 }
 672         }
 673
 674         if (do_htmlhead) {
 675                 begin_burst();
 676                 if (!access("static.local/webcit.css", R_OK)) {
 677                         svprintf("CSSLOCAL", WCS_STRING,
 678                            "<link href=\"static.local/webcit.css\" rel=\"stylesheet\" type=\"text/css\">"
 679                         );
 680                 }
 681                 do_template("head");
 682         }
 683
 684         /* ICONBAR */
 685         if (do_htmlhead) {
 686
 687
 688                 /* check for ImportantMessages (these display in a div overlaying the main screen) */
 689                 if (!IsEmptyStr(WC->ImportantMessage)) {
 690                         wprintf("<div id=\"important_message\">\n"
 691                                 "<span class=\"imsg\">");
 692                         escputs(WC->ImportantMessage);
 693                         wprintf("</span><br />\n"
 694                                 "</div>\n"
 695                                 "<script type=\"text/javascript\">\n"
 696                                 "        setTimeout('hide_imsg_popup()', 5000); \n"
 697                                 "</script>\n");
 698                         WC->ImportantMessage[0] = 0;
 699                 }
 700
 701                 if ( (WC->logged_in) && (!unset_cookies) ) {
 702                         wprintf("<div id=\"iconbar\">");
 703                         do_selected_iconbar();
 704                         /** check for instant messages (these display in a new window) */
 705                         page_popup();
 706                         wprintf("</div>");
 707                 }
 708
 709                 if (do_room_banner == 1) {
 710                         wprintf("<div id=\"banner\">\n");
 711                         embed_room_banner(NULL, navbar_default);
 712                         wprintf("</div>\n");
 713                 }
 714         }
 715
 716         if (do_room_banner == 1) {
 717                 wprintf("<div id=\"content\">\n");
 718         }
 719 }
 720
 721
 722 /*
 723  * Generic function to do an HTTP redirect.  Easy and fun.
 724  */
 725 void http_redirect(char *whichpage) {
 726         wprintf("HTTP/1.1 302 Moved Temporarily\n");
 727         wprintf("Location: %s\r\n", whichpage);
 728         wprintf("URI: %s\r\n", whichpage);
 729         wprintf("Content-type: text/html; charset=utf-8\r\n\r\n");
 730         wprintf("<html><body>");
 731         wprintf("Go <a href=\"%s\">here</A>.", whichpage);
 732         wprintf("</body></html>\n");
 733 }
 734
 735
 736
 737 /*
 738  * Output a piece of content to the web browser using conformant HTTP and MIME semantics
 739  */
 740 void http_transmit_thing(char *thing, size_t length, const char *content_type,
 741                          int is_static) {
 742
 743         output_headers(0, 0, 0, 0, 0, is_static);
 744
 745         wprintf("Content-type: %s\r\n"
 746                 "Server: %s\r\n"
 747                 "Connection: close\r\n",
 748                 content_type,
 749                 PACKAGE_STRING);
 750
 751 #ifdef HAVE_ZLIB
 752         /* If we can send the data out compressed, please do so. */
 753         if (WC->gzip_ok) {
 754                 char *compressed_data = NULL;
 755                 size_t compressed_len;
 756
 757                 compressed_len =  ((length * 101) / 100) + 100;
 758                 compressed_data = malloc(compressed_len);
 759
 760                 if (compress_gzip((Bytef *) compressed_data,
 761                                   &compressed_len,
 762                                   (Bytef *) thing,
 763                                   (uLongf) length, Z_BEST_SPEED) == Z_OK) {
 764                         wprintf("Content-encoding: gzip\r\n"
 765                                 "Content-length: %ld\r\n"
 766                                 "\r\n",
 767                                 (long) compressed_len
 768                         );
 769                         client_write(compressed_data, (size_t)compressed_len);
 770                         free(compressed_data);
 771                         return;
 772                 }
 773         }
 774 #endif
 775
 776         /* No compression ... just send it out as-is */
 777         wprintf("Content-length: %ld\r\n"
 778                 "\r\n",
 779                 (long) length
 780         );
 781         client_write(thing, (size_t)length);
 782 }
 783
 784 /**
 785  * \brief print menu box like used in the floor view or admin interface.
 786  * This function takes pair of strings as va_args,
 787  * \param Title Title string of the box
 788  * \param Class CSS Class for the box
 789  * \param nLines How many string pairs should we print? (URL, UrlText)
 790  * \param ... Pairs of URL Strings and their Names
 791  */
 792 void print_menu_box(char* Title, char *Class, int nLines, ...)
 793 {
 794         va_list arg_list;
 795         long i;
 796
 797         svprintf("BOXTITLE", WCS_STRING, Title);
 798         do_template("beginbox");
 799
 800         wprintf("<ul class=\"%s\">", Class);
 801
 802         va_start(arg_list, nLines);
 803         for (i = 0; i < nLines; ++i)
 804         {
 805                 wprintf("<li><a href=\"%s\">", va_arg(arg_list, char *));
 806                 wprintf((char *) va_arg(arg_list, char *));
 807                 wprintf("</a></li>\n");
 808         }
 809         va_end (arg_list);
 810
 811         wprintf("</a></li>\n");
 812
 813         wprintf("</ul>");
 814
 815         do_template("endbox");
 816 }
 817
 818
 819 /**
 820  * \brief dump out static pages from disk
 821  * \param what the file urs to print
 822  */
 823 void output_static(char *what)
 824 {
 825         FILE *fp;
 826         struct stat statbuf;
 827         off_t bytes;
 828         off_t count = 0;
 829         size_t res;
 830         char *bigbuffer;
 831         const char *content_type;
 832         int len;
 833
 834         fp = fopen(what, "rb");
 835         if (fp == NULL) {
 836                 lprintf(9, "output_static('%s')  -- NOT FOUND --\n", what);
 837                 wprintf("HTTP/1.1 404 %s\r\n", strerror(errno));
 838                 wprintf("Content-Type: text/plain\r\n");
 839                 wprintf("\r\n");
 840                 wprintf("Cannot open %s: %s\r\n", what, strerror(errno));
 841         } else {
 842                 len = strlen (what);
 843                 content_type = GuessMimeByFilename(what, len);
 844
 845                 if (fstat(fileno(fp), &statbuf) == -1) {
 846                         lprintf(9, "output_static('%s')  -- FSTAT FAILED --\n", what);
 847                         wprintf("HTTP/1.1 404 %s\r\n", strerror(errno));
 848                         wprintf("Content-Type: text/plain\r\n");
 849                         wprintf("\r\n");
 850                         wprintf("Cannot fstat %s: %s\n", what, strerror(errno));
 851                         return;
 852                 }
 853
 854                 count = 0;
 855                 bytes = statbuf.st_size;
 856                 if ((bigbuffer = malloc(bytes + 2)) == NULL) {
 857                         lprintf(9, "output_static('%s')  -- MALLOC FAILED (%s) --\n", what, strerror(errno));
 858                         wprintf("HTTP/1.1 500 internal server error\r\n");
 859                         wprintf("Content-Type: text/plain\r\n");
 860                         wprintf("\r\n");
 861                         return;
 862                 }
 863                 while (count < bytes) {
 864                         if ((res = fread(bigbuffer + count, 1, bytes - count, fp)) == 0) {
 865                                 lprintf(9, "output_static('%s')  -- FREAD FAILED (%s) %zu bytes of %zu --\n", what, strerror(errno), bytes - count, bytes);
 866                                 wprintf("HTTP/1.1 500 internal server error \r\n");
 867                                 wprintf("Content-Type: text/plain\r\n");
 868                                 wprintf("\r\n");
 869                                 return;
 870                         }
 871                         count += res;
 872                 }
 873
 874                 fclose(fp);
 875
 876                 lprintf(9, "output_static('%s')  %s\n", what, content_type);
 877                 http_transmit_thing(bigbuffer, (size_t)bytes, content_type, 1);
 878                 free(bigbuffer);
 879         }
 880         if (yesbstr("force_close_session")) {
 881                 end_webcit_session();
 882         }
 883 }
 884
 885 /**
 886  * \brief When the browser requests an image file from the Citadel server,
 887  * this function is called to transmit it.
 888  */
 889 void output_image()
 890 {
 891         char buf[SIZ];
 892         char *xferbuf = NULL;
 893         off_t bytes;
 894         const char *MimeType;
 895
 896         serv_printf("OIMG %s|%s", bstr("name"), bstr("parm"));
 897         serv_getln(buf, sizeof buf);
 898         if (buf[0] == '2') {
 899                 bytes = extract_long(&buf[4], 0);
 900                 xferbuf = malloc(bytes + 2);
 901
 902                 /** Read it from the server */
 903                 read_server_binary(xferbuf, bytes);
 904                 serv_puts("CLOS");
 905                 serv_getln(buf, sizeof buf);
 906
 907                 MimeType = GuessMimeType (xferbuf, bytes);
 908                 /** Write it to the browser */
 909                 if (!IsEmptyStr(MimeType))
 910                 {
 911                         http_transmit_thing(xferbuf,
 912                                             (size_t)bytes,
 913                                             MimeType,
 914                                             0);
 915                         free(xferbuf);
 916                         return;
 917                 }
 918                 /* hm... unknown mimetype? fallback to blank gif */
 919                 free(xferbuf);
 920         }
 921
 922
 923         /**
 924          * Instead of an ugly 404, send a 1x1 transparent GIF
 925          * when there's no such image on the server.
 926          */
 927         char blank_gif[SIZ];
 928         snprintf (blank_gif, SIZ, "%s%s", static_dirs[0], "/blank.gif");
 929         output_static(blank_gif);
 930 }
 931
 932 /**
 933  * \brief Generic function to output an arbitrary MIME part from an arbitrary
 934  *        message number on the server.
 935  *
 936  * \param msgnum                Number of the item on the citadel server
 937  * \param partnum               The MIME part to be output
 938  * \param force_download        Nonzero to force set the Content-Type: header
 939  *                              to "application/octet-stream"
 940  */
 941 void mimepart(char *msgnum, char *partnum, int force_download)
 942 {
 943         char buf[256];
 944         off_t bytes;
 945         char content_type[256];
 946         char *content = NULL;
 947
 948         serv_printf("OPNA %s|%s", msgnum, partnum);
 949         serv_getln(buf, sizeof buf);
 950         if (buf[0] == '2') {
 951                 bytes = extract_long(&buf[4], 0);
 952                 content = malloc(bytes + 2);
 953                 if (force_download) {
 954                         strcpy(content_type, "application/octet-stream");
 955                 }
 956                 else {
 957                         extract_token(content_type, &buf[4], 3, '|', sizeof content_type);
 958                 }
 959                 output_headers(0, 0, 0, 0, 0, 0);
 960                 read_server_binary(content, bytes);
 961                 serv_puts("CLOS");
 962                 serv_getln(buf, sizeof buf);
 963                 http_transmit_thing(content, bytes, content_type, 0);
 964                 free(content);
 965         } else {
 966                 wprintf("HTTP/1.1 404 %s\n", &buf[4]);
 967                 output_headers(0, 0, 0, 0, 0, 0);
 968                 wprintf("Content-Type: text/plain\r\n");
 969                 wprintf("\r\n");
 970                 wprintf(_("An error occurred while retrieving this part: %s\n"), &buf[4]);
 971         }
 972
 973 }
 974
 975
 976 /**
 977  * \brief Read any MIME part of a message, from the server, into memory.
 978  * \param msgnum number of the message on the citadel server
 979  * \param partnum the MIME part to be loaded
 980  */
 981 char *load_mimepart(long msgnum, char *partnum)
 982 {
 983         char buf[SIZ];
 984         off_t bytes;
 985         char content_type[SIZ];
 986         char *content;
 987
 988         serv_printf("DLAT %ld|%s", msgnum, partnum);
 989         serv_getln(buf, sizeof buf);
 990         if (buf[0] == '6') {
 991                 bytes = extract_long(&buf[4], 0);
 992                 extract_token(content_type, &buf[4], 3, '|', sizeof content_type);
 993
 994                 content = malloc(bytes + 2);
 995                 serv_read(content, bytes);
 996
 997                 content[bytes] = 0;     /* null terminate for good measure */
 998                 return(content);
 999         }
1000         else {
1001                 return(NULL);
1002         }
1003
1004 }
1005
1006
1007 /**
1008  * \brief Convenience functions to display a page containing only a string
1009  * \param titlebarcolor color of the titlebar of the frame
1010  * \param titlebarmsg text to display in the title bar
1011  * \param messagetext body of the box
1012  */
1013 void convenience_page(char *titlebarcolor, char *titlebarmsg, char *messagetext)
1014 {
1015         wprintf("HTTP/1.1 200 OK\n");
1016         output_headers(1, 1, 2, 0, 0, 0);
1017         wprintf("<div id=\"banner\">\n");
1018         wprintf("<table width=100%% border=0 bgcolor=\"#%s\"><tr><td>", titlebarcolor);
1019         wprintf("<span class=\"titlebar\">%s</span>\n", titlebarmsg);
1020         wprintf("</td></tr></table>\n");
1021         wprintf("</div>\n<div id=\"content\">\n");
1022         escputs(messagetext);
1023
1024         wprintf("<hr />\n");
1025         wDumpContent(1);
1026 }
1027
1028
1029 /**
1030  * \brief Display a blank page.
1031  */
1032 void blank_page(void) {
1033         output_headers(1, 1, 0, 0, 0, 0);
1034         wDumpContent(2);
1035 }
1036
1037
1038 /**
1039  * \brief A template has been requested
1040  */
1041 void url_do_template(void) {
1042         do_template(bstr("template"));
1043 }
1044
1045
1046
1047 /**
1048  * \brief Offer to make any page the user's "start page."
1049  */
1050 void offer_start_page(void) {
1051         wprintf("<a href=\"change_start_page?startpage=");
1052         urlescputs(WC->this_page);
1053         wprintf("\">");
1054         wprintf(_("Make this my start page"));
1055         wprintf("</a>");
1056 #ifdef TECH_PREVIEW
1057         wprintf("<br/><a href=\"rss?room=");
1058         urlescputs(WC->wc_roomname);
1059         wprintf("\" title=\"RSS 2.0 feed for ");
1060         escputs(WC->wc_roomname);
1061         wprintf("\"><img alt=\"RSS\" border=\"0\" src=\"static/xml_button.gif\"/></a>\n");
1062 #endif
1063 }
1064
1065
1066 /**
1067  * \brief Change the user's start page
1068  */
1069 void change_start_page(void) {
1070
1071         if (bstr("startpage") == NULL) {
1072                 safestrncpy(WC->ImportantMessage,
1073                         _("You no longer have a start page selected."),
1074                         sizeof WC->ImportantMessage);
1075                 display_main_menu();
1076                 return;
1077         }
1078
1079         set_preference("startpage", bstr("startpage"), 1);
1080
1081         output_headers(1, 1, 0, 0, 0, 0);
1082         do_template("newstartpage");
1083         wDumpContent(1);
1084 }
1085
1086
1087
1088 /**
1089  * \brief convenience function to indicate success
1090  * \param successmessage the mesage itself
1091  */
1092 void display_success(char *successmessage)
1093 {
1094         convenience_page("007700", "OK", successmessage);
1095 }
1096
1097
1098 /**
1099  * \brief Authorization required page
1100  * This is probably temporary and should be revisited
1101  * \param message message to put in header
1102 */
1103 void authorization_required(const char *message)
1104 {
1105         wprintf("HTTP/1.1 401 Authorization Required\r\n");
1106         wprintf("WWW-Authenticate: Basic realm=\"\"\r\n", serv_info.serv_humannode);
1107         wprintf("Content-Type: text/html\r\n\r\n");
1108         wprintf("<h1>");
1109         wprintf(_("Authorization Required"));
1110         wprintf("</h1>\r\n");
1111         wprintf(_("The resource you requested requires a valid username and password. "
1112                 "You could not be logged in: %s\n"), message);
1113         wDumpContent(0);
1114 }
1115
1116 /**
1117  * \brief This function is called by the MIME parser to handle data uploaded by
1118  *        the browser.  Form data, uploaded files, and the data from HTTP PUT
1119  *        operations (such as those found in GroupDAV) all arrive this way.
1120  *
1121  * \param name Name of the item being uploaded
1122  * \param filename Filename of the item being uploaded
1123  * \param partnum MIME part identifier (not needed)
1124  * \param disp MIME content disposition (not needed)
1125  * \param content The actual data
1126  * \param cbtype MIME content-type
1127  * \param cbcharset Character set
1128  * \param length Content length
1129  * \param encoding MIME encoding type (not needed)
1130  * \param userdata Not used here
1131  */
1132 void upload_handler(char *name, char *filename, char *partnum, char *disp,
1133                         void *content, char *cbtype, char *cbcharset,
1134                         size_t length, char *encoding, void *userdata)
1135 {
1136         urlcontent *u;
1137 /*
1138         lprintf(9, "upload_handler() name=%s, type=%s, len=%d\n", name, cbtype, length);
1139 */
1140         if (WC->urlstrings == NULL)
1141                 WC->urlstrings = NewHash(1, NULL);
1142
1143         /* Form fields */
1144         if ( (length > 0) && (IsEmptyStr(cbtype)) ) {
1145                 u = (urlcontent *) malloc(sizeof(urlcontent));
1146
1147                 safestrncpy(u->url_key, name, sizeof(u->url_key));
1148                 u->url_data = malloc(length + 1);
1149                 u->url_data_size = length;
1150                 memcpy(u->url_data, content, length);
1151                 u->url_data[length] = 0;
1152                 Put(WC->urlstrings, u->url_key, strlen(u->url_key), u, free_url);
1153
1154 /*              lprintf(9, "Key: <%s> len: [%ld] Data: <%s>\n", u->url_key, u->url_data_size, u->url_data);*/
1155         }
1156
1157         /** Uploaded files */
1158         if ( (length > 0) && (!IsEmptyStr(cbtype)) ) {
1159                 WC->upload = malloc(length);
1160                 if (WC->upload != NULL) {
1161                         WC->upload_length = length;
1162                         safestrncpy(WC->upload_filename, filename,
1163                                         sizeof(WC->upload_filename));
1164                         safestrncpy(WC->upload_content_type, cbtype,
1165                                         sizeof(WC->upload_content_type));
1166                         memcpy(WC->upload, content, length);
1167                 }
1168                 else {
1169                         lprintf(3, "malloc() failed: %s\n", strerror(errno));
1170                 }
1171         }
1172
1173 }
1174
1175 /**
1176  * \brief Convenience functions to wrap around asynchronous ajax responses
1177  */
1178 void begin_ajax_response(void) {
1179         output_headers(0, 0, 0, 0, 0, 0);
1180
1181         wprintf("Content-type: text/html; charset=UTF-8\r\n"
1182                 "Server: %s\r\n"
1183                 "Connection: close\r\n"
1184                 "Pragma: no-cache\r\n"
1185                 "Cache-Control: no-cache\r\n"
1186                 "Expires: -1\r\n"
1187                 ,
1188                 PACKAGE_STRING);
1189         begin_burst();
1190 }
1191
1192 /**
1193  * \brief print ajax response footer
1194  */
1195 void end_ajax_response(void) {
1196         wprintf("\r\n");
1197         wDumpContent(0);
1198 }
1199
1200 /**
1201  * \brief Wraps a Citadel server command in an AJAX transaction.
1202  */
1203 void ajax_servcmd(void)
1204 {
1205         char buf[1024];
1206         char gcontent[1024];
1207         char *junk;
1208         size_t len;
1209
1210         begin_ajax_response();
1211
1212         serv_printf("%s", bstr("g_cmd"));
1213         serv_getln(buf, sizeof buf);
1214         wprintf("%s\n", buf);
1215
1216         if (buf[0] == '8') {
1217                 serv_printf("\n\n000");
1218         }
1219         if ((buf[0] == '1') || (buf[0] == '8')) {
1220                 while (serv_getln(gcontent, sizeof gcontent), strcmp(gcontent, "000")) {
1221                         wprintf("%s\n", gcontent);
1222                 }
1223                 wprintf("000");
1224         }
1225         if (buf[0] == '4') {
1226                 text_to_server(bstr("g_input"));
1227                 serv_puts("000");
1228         }
1229         if (buf[0] == '6') {
1230                 len = atol(&buf[4]);
1231                 junk = malloc(len);
1232                 serv_read(junk, len);
1233                 free(junk);
1234         }
1235         if (buf[0] == '7') {
1236                 len = atol(&buf[4]);
1237                 junk = malloc(len);
1238                 memset(junk, 0, len);
1239                 serv_write(junk, len);
1240                 free(junk);
1241         }
1242
1243         end_ajax_response();
1244
1245         /**
1246          * This is kind of an ugly hack, but this is the only place it can go.
1247          * If the command was GEXP, then the instant messenger window must be
1248          * running, so reset the "last_pager_check" watchdog timer so
1249          * that page_popup() doesn't try to open it a second time.
1250          */
1251         if (!strncasecmp(bstr("g_cmd"), "GEXP", 4)) {
1252                 WC->last_pager_check = time(NULL);
1253         }
1254 }
1255
1256
1257 /**
1258  * \brief Helper function for the asynchronous check to see if we need
1259  * to open the instant messenger window.
1260  */
1261 void seconds_since_last_gexp(void)
1262 {
1263         char buf[256];
1264
1265         begin_ajax_response();
1266         if ( (time(NULL) - WC->last_pager_check) < 30) {
1267                 wprintf("NO\n");
1268         }
1269         else {
1270                 serv_puts("NOOP");
1271                 serv_getln(buf, sizeof buf);
1272                 if (buf[3] == '*') {
1273                         wprintf("YES");
1274                 }
1275                 else {
1276                         wprintf("NO");
1277                 }
1278         }
1279         end_ajax_response();
1280 }
1281
1282
1283
1284
1285 /**
1286  * \brief Entry point for WebCit transaction
1287  */
1288 void session_loop(struct httprequest *req)
1289 {
1290         char cmd[1024];
1291         char action[1024];
1292         char arg[8][128];
1293         size_t sizes[10];
1294         char *index[10];
1295         char buf[SIZ];
1296         char request_method[128];
1297         char pathname[1024];
1298         int a, b, nBackDots, nEmpty;
1299         int ContentLength = 0;
1300         int BytesRead = 0;
1301         char ContentType[512];
1302         char *content = NULL;
1303         char *content_end = NULL;
1304         struct httprequest *hptr;
1305         char browser_host[256];
1306         char user_agent[256];
1307         int body_start = 0;
1308         int is_static = 0;
1309         int n_static = 0;
1310         int len = 0;
1311         /**
1312          * We stuff these with the values coming from the client cookies,
1313          * so we can use them to reconnect a timed out session if we have to.
1314          */
1315         char c_username[SIZ];
1316         char c_password[SIZ];
1317         char c_roomname[SIZ];
1318         char c_httpauth_string[SIZ];
1319         char c_httpauth_user[SIZ];
1320         char c_httpauth_pass[SIZ];
1321         char cookie[SIZ];
1322
1323         safestrncpy(c_username, "", sizeof c_username);
1324         safestrncpy(c_password, "", sizeof c_password);
1325         safestrncpy(c_roomname, "", sizeof c_roomname);
1326         safestrncpy(c_httpauth_string, "", sizeof c_httpauth_string);
1327         safestrncpy(c_httpauth_user, DEFAULT_HTTPAUTH_USER, sizeof c_httpauth_user);
1328         safestrncpy(c_httpauth_pass, DEFAULT_HTTPAUTH_PASS, sizeof c_httpauth_pass);
1329         strcpy(browser_host, "");
1330
1331         WC->upload_length = 0;
1332         WC->upload = NULL;
1333         WC->vars = NULL;
1334         WC->is_wap = 0;
1335
1336         hptr = req;
1337         if (hptr == NULL) return;
1338
1339         safestrncpy(cmd, hptr->line, sizeof cmd);
1340         hptr = hptr->next;
1341         extract_token(request_method, cmd, 0, ' ', sizeof request_method);
1342         extract_token(pathname, cmd, 1, ' ', sizeof pathname);
1343
1344         /** Figure out the action */
1345         index[0] = action;
1346         sizes[0] = sizeof action;
1347         for (a=1; a<9; a++)
1348         {
1349                 index[a] = arg[a-1];
1350                 sizes[a] = sizeof arg[a-1];
1351         }
1352 ////    index[9] = &foo; todo
1353         nBackDots = 0;
1354         nEmpty = 0;
1355         for ( a = 0; a < 9; ++a)
1356         {
1357                 extract_token(index[a], pathname, a + 1, '/', sizes[a]);
1358                 if (strstr(index[a], "?")) *strstr(index[a], "?") = 0;
1359                 if (strstr(index[a], "&")) *strstr(index[a], "&") = 0;
1360                 if (strstr(index[a], " ")) *strstr(index[a], " ") = 0;
1361                 if ((index[a][0] == '.') && (index[a][1] == '.'))
1362                         nBackDots++;
1363                 if (index[a][0] == '\0')
1364                         nEmpty++;
1365         }
1366
1367         while (hptr != NULL) {
1368                 safestrncpy(buf, hptr->line, sizeof buf);
1369                 /* lprintf(9, "HTTP HEADER: %s\n", buf); */
1370                 hptr = hptr->next;
1371
1372                 if (!strncasecmp(buf, "Cookie: webcit=", 15)) {
1373                         safestrncpy(cookie, &buf[15], sizeof cookie);
1374                         cookie_to_stuff(cookie, NULL,
1375                                         c_username, sizeof c_username,
1376                                         c_password, sizeof c_password,
1377                                         c_roomname, sizeof c_roomname);
1378                 }
1379                 else if (!strncasecmp(buf, "Authorization: Basic ", 21)) {
1380                         CtdlDecodeBase64(c_httpauth_string, &buf[21], strlen(&buf[21]));
1381                         extract_token(c_httpauth_user, c_httpauth_string, 0, ':', sizeof c_httpauth_user);
1382                         extract_token(c_httpauth_pass, c_httpauth_string, 1, ':', sizeof c_httpauth_pass);
1383                 }
1384                 else if (!strncasecmp(buf, "Content-length: ", 16)) {
1385                         ContentLength = atoi(&buf[16]);
1386                 }
1387                 else if (!strncasecmp(buf, "Content-type: ", 14)) {
1388                         safestrncpy(ContentType, &buf[14], sizeof ContentType);
1389                 }
1390                 else if (!strncasecmp(buf, "User-agent: ", 12)) {
1391                         safestrncpy(user_agent, &buf[12], sizeof user_agent);
1392                 }
1393                 else if (!strncasecmp(buf, "X-Forwarded-Host: ", 18)) {
1394                         if (follow_xff) {
1395                                 safestrncpy(WC->http_host, &buf[18], sizeof WC->http_host);
1396                         }
1397                 }
1398                 else if (!strncasecmp(buf, "Host: ", 6)) {
1399                         if (IsEmptyStr(WC->http_host)) {
1400                                 safestrncpy(WC->http_host, &buf[6], sizeof WC->http_host);
1401                         }
1402                 }
1403                 else if (!strncasecmp(buf, "X-Forwarded-For: ", 17)) {
1404                         safestrncpy(browser_host, &buf[17], sizeof browser_host);
1405                         while (num_tokens(browser_host, ',') > 1) {
1406                                 remove_token(browser_host, 0, ',');
1407                         }
1408                         striplt(browser_host);
1409                 }
1410                 /** Only WAP gateways explicitly name this content-type */
1411                 else if (strstr(buf, "text/vnd.wap.wml")) {
1412                         WC->is_wap = 1;
1413                 }
1414         }
1415
1416         if (ContentLength > 0) {
1417                 content = malloc(ContentLength + SIZ);
1418                 memset(content, 0, ContentLength + SIZ);
1419                 snprintf(content,  ContentLength + SIZ, "Content-type: %s\n"
1420                                 "Content-length: %d\n\n",
1421                                 ContentType, ContentLength);
1422                 body_start = strlen(content);
1423
1424                 /** Read the entire input data at once. */
1425                 client_read(WC->http_sock, &content[BytesRead+body_start], ContentLength);
1426
1427                 if (!strncasecmp(ContentType, "application/x-www-form-urlencoded", 33)) {
1428                         addurls(&content[body_start]);
1429                 } else if (!strncasecmp(ContentType, "multipart", 9)) {
1430                         content_end = content + ContentLength + body_start;
1431                         mime_parser(content, content_end, *upload_handler, NULL, NULL, NULL, 0);
1432                 }
1433         } else {
1434                 content = NULL;
1435         }
1436
1437         /** make a note of where we are in case the user wants to save it */
1438         safestrncpy(WC->this_page, cmd, sizeof(WC->this_page));
1439         remove_token(WC->this_page, 2, ' ');
1440         remove_token(WC->this_page, 0, ' ');
1441
1442         /** If there are variables in the URL, we must grab them now */
1443         len = strlen(cmd);
1444         for (a = 0; a < len; ++a) {
1445                 if ((cmd[a] == '?') || (cmd[a] == '&')) {
1446                         for (b = a; b < len; ++b) {
1447                                 if (isspace(cmd[b])){
1448                                         cmd[b] = 0;
1449                                         len = b - 1;
1450                                 }
1451                         }
1452                         addurls(&cmd[a + 1]);
1453                         cmd[a] = 0;
1454                         len = a - 1;
1455                 }
1456         }
1457
1458         /** If it's a "force 404" situation then display the error and bail. */
1459         if (!strcmp(action, "404")) {
1460                 wprintf("HTTP/1.1 404 Not found\r\n");
1461                 wprintf("Content-Type: text/plain\r\n");
1462                 wprintf("\r\n");
1463                 wprintf("Not found\r\n");
1464                 goto SKIP_ALL_THIS_CRAP;
1465         }
1466
1467         /** Static content can be sent without connecting to Citadel. */
1468         is_static = 0;
1469         for (a=0; a<ndirs; ++a) {
1470                 if (!strcasecmp(action, (char*)static_content_dirs[a])) { /* map web to disk location */
1471                         is_static = 1;
1472                         n_static = a;
1473                 }
1474         }
1475         if (is_static) {
1476                 if (nBackDots < 2)
1477                 {
1478                         snprintf(buf, sizeof buf, "%s/%s/%s/%s/%s/%s/%s/%s",
1479                                  static_dirs[n_static],
1480                                  index[1], index[2], index[3], index[4], index[5], index[6], index[7]);
1481                         for (a=0; a<8; ++a) {
1482                                 if (buf[strlen(buf)-1] == '/') {
1483                                         buf[strlen(buf)-1] = 0;
1484                                 }
1485                         }
1486                         for (a = 0; a < strlen(buf); ++a) {
1487                                 if (isspace(buf[a])) {
1488                                         buf[a] = 0;
1489                                 }
1490                         }
1491                         output_static(buf);
1492                 }
1493                 else
1494                 {
1495                         lprintf(9, "Suspicious request. Ignoring.");
1496                         wprintf("HTTP/1.1 404 Security check failed\r\n");
1497                         wprintf("Content-Type: text/plain\r\n");
1498                         wprintf("\r\n");
1499                         wprintf("You have sent a malformed or invalid request.\r\n");
1500                 }
1501                 goto SKIP_ALL_THIS_CRAP;        /* Don't try to connect */
1502         }
1503
1504         /* If the client sent a nonce that is incorrect, kill the request. */
1505         if (strlen(bstr("nonce")) > 0) {
1506                 lprintf(9, "Comparing supplied nonce %s to session nonce %ld\n",
1507                         bstr("nonce"), WC->nonce);
1508                 if (ibstr("nonce") != WC->nonce) {
1509                         lprintf(9, "Ignoring request with mismatched nonce.\n");
1510                         wprintf("HTTP/1.1 404 Security check failed\r\n");
1511                         wprintf("Content-Type: text/plain\r\n");
1512                         wprintf("\r\n");
1513                         wprintf("Security check failed.\r\n");
1514                         goto SKIP_ALL_THIS_CRAP;
1515                 }
1516         }
1517
1518         /**
1519          * If we're not connected to a Citadel server, try to hook up the
1520          * connection now.
1521          */
1522         if (!WC->connected) {
1523                 if (!strcasecmp(ctdlhost, "uds")) {
1524                         /* unix domain socket */
1525                         snprintf(buf, SIZ, "%s/citadel.socket", ctdlport);
1526                         WC->serv_sock = uds_connectsock(buf);
1527                 }
1528                 else {
1529                         /* tcp socket */
1530                         WC->serv_sock = tcp_connectsock(ctdlhost, ctdlport);
1531                 }
1532
1533                 if (WC->serv_sock < 0) {
1534                         do_logout();
1535                         goto SKIP_ALL_THIS_CRAP;
1536                 }
1537                 else {
1538                         WC->connected = 1;
1539                         serv_getln(buf, sizeof buf);    /** get the server welcome message */
1540
1541                         /**
1542                          * From what host is our user connecting?  Go with
1543                          * the host at the other end of the HTTP socket,
1544                          * unless we are following X-Forwarded-For: headers
1545                          * and such a header has already turned up something.
1546                          */
1547                         if ( (!follow_xff) || (strlen(browser_host) == 0) ) {
1548                                 locate_host(browser_host, WC->http_sock);
1549                         }
1550
1551                         get_serv_info(browser_host, user_agent);
1552                         if (serv_info.serv_rev_level < MINIMUM_CIT_VERSION) {
1553                                 wprintf(_("You are connected to a Citadel "
1554                                         "server running Citadel %d.%02d. \n"
1555                                         "In order to run this version of WebCit "
1556                                         "you must also have Citadel %d.%02d or"
1557                                         " newer.\n\n\n"),
1558                                                 serv_info.serv_rev_level / 100,
1559                                                 serv_info.serv_rev_level % 100,
1560                                                 MINIMUM_CIT_VERSION / 100,
1561                                                 MINIMUM_CIT_VERSION % 100
1562                                         );
1563                                 end_webcit_session();
1564                                 goto SKIP_ALL_THIS_CRAP;
1565                         }
1566                 }
1567         }
1568
1569         /**
1570          * Functions which can be performed without logging in
1571          */
1572         if (!strcasecmp(action, "listsub")) {
1573                 do_listsub();
1574                 goto SKIP_ALL_THIS_CRAP;
1575         }
1576         if (!strcasecmp(action, "freebusy")) {
1577                 do_freebusy(cmd);
1578                 goto SKIP_ALL_THIS_CRAP;
1579         }
1580
1581         /**
1582          * If we're not logged in, but we have HTTP Authentication data,
1583          * try logging in to Citadel using that.
1584          */
1585         if ((!WC->logged_in)
1586            && (strlen(c_httpauth_user) > 0)
1587            && (strlen(c_httpauth_pass) > 0)) {
1588                 serv_printf("USER %s", c_httpauth_user);
1589                 serv_getln(buf, sizeof buf);
1590                 if (buf[0] == '3') {
1591                         serv_printf("PASS %s", c_httpauth_pass);
1592                         serv_getln(buf, sizeof buf);
1593                         if (buf[0] == '2') {
1594                                 become_logged_in(c_httpauth_user,
1595                                                 c_httpauth_pass, buf);
1596                                 safestrncpy(WC->httpauth_user, c_httpauth_user, sizeof WC->httpauth_user);
1597                                 safestrncpy(WC->httpauth_pass, c_httpauth_pass, sizeof WC->httpauth_pass);
1598                         } else {
1599                                 /** Should only display when password is wrong */
1600                                 authorization_required(&buf[4]);
1601                                 goto SKIP_ALL_THIS_CRAP;
1602                         }
1603                 }
1604         }
1605
1606         /** This needs to run early */
1607 #ifdef TECH_PREVIEW
1608         if (!strcasecmp(action, "rss")) {
1609                 display_rss(bstr("room"), request_method);
1610                 goto SKIP_ALL_THIS_CRAP;
1611         }
1612 #endif
1613
1614         /**
1615          * The GroupDAV stuff relies on HTTP authentication instead of
1616          * our session's authentication.
1617          */
1618         if (!strncasecmp(action, "groupdav", 8)) {
1619                 groupdav_main(req, ContentType, /* do GroupDAV methods */
1620                         ContentLength, content+body_start);
1621                 if (!WC->logged_in) {
1622                         WC->killthis = 1;       /* If not logged in, don't */
1623                 }                               /* keep the session active */
1624                 goto SKIP_ALL_THIS_CRAP;
1625         }
1626
1627
1628         /**
1629          * Automatically send requests with any method other than GET or
1630          * POST to the GroupDAV code as well.
1631          */
1632         if ((strcasecmp(request_method, "GET")) && (strcasecmp(request_method, "POST"))) {
1633                 groupdav_main(req, ContentType, /** do GroupDAV methods */
1634                         ContentLength, content+body_start);
1635                 if (!WC->logged_in) {
1636                         WC->killthis = 1;       /** If not logged in, don't */
1637                 }                               /** keep the session active */
1638                 goto SKIP_ALL_THIS_CRAP;
1639         }
1640
1641         /**
1642          * If we're not logged in, but we have username and password cookies
1643          * supplied by the browser, try using them to log in.
1644          */
1645         if ((!WC->logged_in)
1646            && (!IsEmptyStr(c_username))
1647            && (!IsEmptyStr(c_password))) {
1648                 serv_printf("USER %s", c_username);
1649                 serv_getln(buf, sizeof buf);
1650                 if (buf[0] == '3') {
1651                         serv_printf("PASS %s", c_password);
1652                         serv_getln(buf, sizeof buf);
1653                         if (buf[0] == '2') {
1654                                 become_logged_in(c_username, c_password, buf);
1655                         }
1656                 }
1657         }
1658         /**
1659          * If we don't have a current room, but a cookie specifying the
1660          * current room is supplied, make an effort to go there.
1661          */
1662         if ((IsEmptyStr(WC->wc_roomname)) && (!IsEmptyStr(c_roomname))) {
1663                 serv_printf("GOTO %s", c_roomname);
1664                 serv_getln(buf, sizeof buf);
1665                 if (buf[0] == '2') {
1666                         safestrncpy(WC->wc_roomname, c_roomname, sizeof WC->wc_roomname);
1667                 }
1668         }
1669
1670         if (!strcasecmp(action, "image")) {
1671                 output_image();
1672         } else if (!strcasecmp(action, "display_mime_icon")) {
1673                 display_mime_icon();
1674
1675                 /**
1676                  * All functions handled below this point ... make sure we log in
1677                  * before doing anything else!
1678                  */
1679         } else if ((!WC->logged_in) && (!strcasecmp(action, "login"))) {
1680                 do_login();
1681         } else if (!WC->logged_in) {
1682                 display_login(NULL);
1683         }
1684
1685         /**
1686          * Various commands...
1687          */
1688
1689         else {
1690                 void *vHandler;
1691                 WebcitHandler *Handler;
1692
1693                 GetHash(HandlerHash, action, strlen(action) /* TODO*/, &vHandler),
1694                         Handler = (WebcitHandler*) vHandler;
1695                 if (Handler != NULL) {
1696                         if (Handler->IsAjax)
1697                                 begin_ajax_response();
1698                         Handler->F();
1699                         if (Handler->IsAjax)
1700                                 end_ajax_response();
1701                 }
1702
1703
1704         else if (!strcasecmp(action, "do_welcome")) {
1705                 do_welcome();
1706         } else if (!strcasecmp(action, "blank")) {
1707                 blank_page();
1708         } else if (!strcasecmp(action, "do_template")) {
1709                 url_do_template();
1710         } else if (!strcasecmp(action, "display_aide_menu")) {
1711                 display_aide_menu();
1712         } else if (!strcasecmp(action, "server_shutdown")) {
1713                 display_shutdown();
1714         } else if (!strcasecmp(action, "display_main_menu")) {
1715                 display_main_menu();
1716         } else if (!strcasecmp(action, "who")) {
1717                 who();
1718         } else if (!strcasecmp(action, "sslg")) {
1719                 seconds_since_last_gexp();
1720         } else if (!strcasecmp(action, "who_inner_html")) {
1721                 begin_ajax_response();
1722                 who_inner_div();
1723                 end_ajax_response();
1724         } else if (!strcasecmp(action, "wholist_section")) {
1725                 begin_ajax_response();
1726                 wholist_section();
1727                 end_ajax_response();
1728         } else if (!strcasecmp(action, "new_messages_html")) {
1729                 begin_ajax_response();
1730                 new_messages_section();
1731                 end_ajax_response();
1732         } else if (!strcasecmp(action, "tasks_inner_html")) {
1733                 begin_ajax_response();
1734                 tasks_section();
1735                 end_ajax_response();
1736         } else if (!strcasecmp(action, "calendar_inner_html")) {
1737                 begin_ajax_response();
1738                 calendar_section();
1739                 end_ajax_response();
1740         } else if (!strcasecmp(action, "mini_calendar")) {
1741                 begin_ajax_response();
1742                 ajax_mini_calendar();
1743                 end_ajax_response();
1744         } else if (!strcasecmp(action, "iconbar_ajax_menu")) {
1745                 begin_ajax_response();
1746                 do_iconbar();
1747                 end_ajax_response();
1748         } else if (!strcasecmp(action, "iconbar_ajax_rooms")) {
1749                 begin_ajax_response();
1750                 do_iconbar_roomlist();
1751                 end_ajax_response();
1752         } else if (!strcasecmp(action, "knrooms")) {
1753                 knrooms();
1754         } else if (!strcasecmp(action, "gotonext")) {
1755                 slrp_highest();
1756                 gotonext();
1757         } else if (!strcasecmp(action, "skip")) {
1758                 gotonext();
1759         } else if (!strcasecmp(action, "ungoto")) {
1760                 ungoto();
1761         } else if (!strcasecmp(action, "dotgoto")) {
1762                 if (WC->wc_view != VIEW_MAILBOX) {      /* dotgoto acts like dotskip when we're in a mailbox view */
1763                         slrp_highest();
1764                 }
1765                 smart_goto(bstr("room"));
1766         } else if (!strcasecmp(action, "dotskip")) {
1767                 smart_goto(bstr("room"));
1768         } else if (!strcasecmp(action, "termquit")) {
1769                 do_logout();
1770         } else if (!strcasecmp(action, "readnew")) {
1771                 readloop("readnew");
1772         } else if (!strcasecmp(action, "readold")) {
1773                 readloop("readold");
1774         } else if (!strcasecmp(action, "readfwd")) {
1775                 readloop("readfwd");
1776         } else if (!strcasecmp(action, "headers")) {
1777                 readloop("headers");
1778         } else if (!strcasecmp(action, "do_search")) {
1779                 readloop("do_search");
1780         } else if (!strcasecmp(action, "msg")) {
1781                 embed_message(index[1]);
1782         } else if (!strcasecmp(action, "printmsg")) {
1783                 print_message(index[1]);
1784         } else if (!strcasecmp(action, "msgheaders")) {
1785                 display_headers(index[1]);
1786         } else if (!strcasecmp(action, "wiki")) {
1787                 display_wiki_page();
1788         } else if (!strcasecmp(action, "display_enter")) {
1789                 display_enter();
1790         } else if (!strcasecmp(action, "post")) {
1791                 post_message();
1792         } else if (!strcasecmp(action, "move_msg")) {
1793                 move_msg();
1794         } else if (!strcasecmp(action, "delete_msg")) {
1795                 delete_msg();
1796         } else if (!strcasecmp(action, "userlist")) {
1797                 userlist();
1798         } else if (!strcasecmp(action, "showuser")) {
1799                 showuser();
1800         } else if (!strcasecmp(action, "display_page")) {
1801                 display_page();
1802         } else if (!strcasecmp(action, "page_user")) {
1803                 page_user();
1804         } else if (!strcasecmp(action, "chat")) {
1805                 do_chat();
1806         } else if (!strcasecmp(action, "display_private")) {
1807                 display_private("", 0);
1808         } else if (!strcasecmp(action, "goto_private")) {
1809                 goto_private();
1810         } else if (!strcasecmp(action, "zapped_list")) {
1811                 zapped_list();
1812         } else if (!strcasecmp(action, "display_zap")) {
1813                 display_zap();
1814         } else if (!strcasecmp(action, "zap")) {
1815                 zap();
1816         } else if (!strcasecmp(action, "display_entroom")) {
1817                 display_entroom();
1818         } else if (!strcasecmp(action, "entroom")) {
1819                 entroom();
1820         } else if (!strcasecmp(action, "display_whok")) {
1821                 display_whok();
1822         } else if (!strcasecmp(action, "do_invt_kick")) {
1823                 do_invt_kick();
1824         } else if (!strcasecmp(action, "display_editroom")) {
1825                 display_editroom();
1826         } else if (!strcasecmp(action, "netedit")) {
1827                 netedit();
1828         } else if (!strcasecmp(action, "editroom")) {
1829                 editroom();
1830         } else if (!strcasecmp(action, "display_editinfo")) {
1831                 display_edit(_("Room info"), "EINF 0", "RINF", "editinfo", 1);
1832         } else if (!strcasecmp(action, "editinfo")) {
1833                 save_edit(_("Room info"), "EINF 1", 1);
1834         } else if (!strcasecmp(action, "display_editbio")) {
1835                 snprintf(buf, SIZ, "RBIO %s", WC->wc_fullname);
1836                 display_edit(_("Your bio"), "NOOP", buf, "editbio", 3);
1837         } else if (!strcasecmp(action, "editbio")) {
1838                 save_edit(_("Your bio"), "EBIO", 0);
1839         } else if (!strcasecmp(action, "confirm_move_msg")) {
1840                 confirm_move_msg();
1841         } else if (!strcasecmp(action, "delete_room")) {
1842                 delete_room();
1843         } else if (!strcasecmp(action, "validate")) {
1844                 validate();
1845                 /* The users photo display / upload facility */
1846         } else if (!strcasecmp(action, "display_editpic")) {
1847                 display_graphics_upload(_("your photo"),
1848                                         "_userpic_",
1849                                         "editpic");
1850         } else if (!strcasecmp(action, "editpic")) {
1851                 do_graphics_upload("_userpic_");
1852                 /* room picture dispay / upload facility */
1853         } else if (!strcasecmp(action, "display_editroompic")) {
1854                 display_graphics_upload(_("the icon for this room"),
1855                                         "_roompic_",
1856                                         "editroompic");
1857         } else if (!strcasecmp(action, "editroompic")) {
1858                 do_graphics_upload("_roompic_");
1859                 /* the greetingpage hello pic */
1860         } else if (!strcasecmp(action, "display_edithello")) {
1861                 display_graphics_upload(_("the Greetingpicture for the login prompt"),
1862                                         "hello",
1863                                         "edithellopic");
1864         } else if (!strcasecmp(action, "edithellopic")) {
1865                 do_graphics_upload("hello");
1866                 /* the logoff banner */
1867         } else if (!strcasecmp(action, "display_editgoodbyepic")) {
1868                 display_graphics_upload(_("the Logoff banner picture"),
1869                                         "UIMG 0|%s|goodbuye",
1870                                         "editgoodbuyepic");
1871         } else if (!strcasecmp(action, "editgoodbuyepic")) {
1872                 do_graphics_upload("UIMG 1|%s|goodbuye");
1873
1874         } else if (!strcasecmp(action, "delete_floor")) {
1875                 delete_floor();
1876         } else if (!strcasecmp(action, "rename_floor")) {
1877                 rename_floor();
1878         } else if (!strcasecmp(action, "create_floor")) {
1879                 create_floor();
1880         } else if (!strcasecmp(action, "display_editfloorpic")) {
1881                 snprintf(buf, SIZ, "UIMG 0|_floorpic_|%s",
1882                         bstr("which_floor"));
1883                 display_graphics_upload(_("the icon for this floor"),
1884                                         buf,
1885                                         "editfloorpic");
1886         } else if (!strcasecmp(action, "editfloorpic")) {
1887                 snprintf(buf, SIZ, "UIMG 1|_floorpic_|%s",
1888                         bstr("which_floor"));
1889                 do_graphics_upload(buf);
1890         } else if (!strcasecmp(action, "display_reg")) {
1891                 display_reg(0);
1892         } else if (!strcasecmp(action, "display_changepw")) {
1893                 display_changepw();
1894         } else if (!strcasecmp(action, "changepw")) {
1895                 changepw();
1896         } else if (!strcasecmp(action, "display_edit_node")) {
1897                 display_edit_node();
1898         } else if (!strcasecmp(action, "edit_node")) {
1899                 edit_node();
1900         } else if (!strcasecmp(action, "display_netconf")) {
1901                 display_netconf();
1902         } else if (!strcasecmp(action, "display_confirm_delete_node")) {
1903                 display_confirm_delete_node();
1904         } else if (!strcasecmp(action, "delete_node")) {
1905                 delete_node();
1906         } else if (!strcasecmp(action, "display_add_node")) {
1907                 display_add_node();
1908         } else if (!strcasecmp(action, "terminate_session")) {
1909                 slrp_highest();
1910                 terminate_session();
1911         } else if (!strcasecmp(action, "edit_me")) {
1912                 edit_me();
1913         } else if (!strcasecmp(action, "display_siteconfig")) {
1914                 display_siteconfig();
1915         } else if (!strcasecmp(action, "chat_recv")) {
1916                 chat_recv();
1917         } else if (!strcasecmp(action, "chat_send")) {
1918                 chat_send();
1919         } else if (!strcasecmp(action, "siteconfig")) {
1920                 siteconfig();
1921         } else if (!strcasecmp(action, "display_generic")) {
1922                 display_generic();
1923         } else if (!strcasecmp(action, "do_generic")) {
1924                 do_generic();
1925         } else if (!strcasecmp(action, "ajax_servcmd")) {
1926                 ajax_servcmd();
1927         } else if (!strcasecmp(action, "display_menubar")) {
1928                 display_menubar(1);
1929         } else if (!strcasecmp(action, "mimepart")) {
1930                 mimepart(index[1], index[2], 0);
1931         } else if (!strcasecmp(action, "mimepart_download")) {
1932                 mimepart(index[1], index[2], 1);
1933         } else if (!strcasecmp(action, "edit_vcard")) {
1934                 edit_vcard();
1935         } else if (!strcasecmp(action, "submit_vcard")) {
1936                 submit_vcard();
1937         } else if (!strcasecmp(action, "select_user_to_edit")) {
1938                 select_user_to_edit(NULL, NULL);
1939         } else if (!strcasecmp(action, "display_edituser")) {
1940                 display_edituser(NULL, 0);
1941         } else if (!strcasecmp(action, "edituser")) {
1942                 edituser();
1943         } else if (!strcasecmp(action, "create_user")) {
1944                 create_user();
1945         } else if (!strcasecmp(action, "changeview")) {
1946                 change_view();
1947         } else if (!strcasecmp(action, "change_start_page")) {
1948                 change_start_page();
1949         } else if (!strcasecmp(action, "display_floorconfig")) {
1950                 display_floorconfig(NULL);
1951         } else if (!strcasecmp(action, "toggle_self_service")) {
1952                 toggle_self_service();
1953         } else if (!strcasecmp(action, "display_edit_task")) {
1954                 display_edit_task();
1955         } else if (!strcasecmp(action, "save_task")) {
1956                 save_task();
1957         } else if (!strcasecmp(action, "display_edit_event")) {
1958                 display_edit_event();
1959         } else if (!strcasecmp(action, "save_event")) {
1960                 save_event();
1961         } else if (!strcasecmp(action, "respond_to_request")) {
1962                 respond_to_request();
1963         } else if (!strcasecmp(action, "handle_rsvp")) {
1964                 handle_rsvp();
1965         } else if (!strcasecmp(action, "summary")) {
1966                 summary();
1967         } else if (!strcasecmp(action, "summary_inner_div")) {
1968                 begin_ajax_response();
1969                 summary_inner_div();
1970                 end_ajax_response();
1971         } else if (!strcasecmp(action, "display_customize_iconbar")) {
1972                 display_customize_iconbar();
1973         } else if (!strcasecmp(action, "commit_iconbar")) {
1974                 commit_iconbar();
1975         } else if (!strcasecmp(action, "set_room_policy")) {
1976                 set_room_policy();
1977         } else if (!strcasecmp(action, "display_inetconf")) {
1978                 display_inetconf();
1979         } else if (!strcasecmp(action, "save_inetconf")) {
1980                 save_inetconf();
1981         } else if (!strcasecmp(action, "display_smtpqueue")) {
1982                 display_smtpqueue();
1983         } else if (!strcasecmp(action, "display_smtpqueue_inner_div")) {
1984                 display_smtpqueue_inner_div();
1985         } else if (!strcasecmp(action, "display_sieve")) {
1986                 display_sieve();
1987         } else if (!strcasecmp(action, "save_sieve")) {
1988                 save_sieve();
1989         } else if (!strcasecmp(action, "display_pushemail")) {
1990                 display_pushemail();
1991         } else if (!strcasecmp(action, "save_pushemail")) {
1992                 save_pushemail();
1993         } else if (!strcasecmp(action, "display_add_remove_scripts")) {
1994                 display_add_remove_scripts(NULL);
1995         } else if (!strcasecmp(action, "create_script")) {
1996                 create_script();
1997         } else if (!strcasecmp(action, "delete_script")) {
1998                 delete_script();
1999         } else if (!strcasecmp(action, "setup_wizard")) {
2000                 do_setup_wizard();
2001         } else if (!strcasecmp(action, "display_preferences")) {
2002                 display_preferences();
2003         } else if (!strcasecmp(action, "set_preferences")) {
2004                 set_preferences();
2005         } else if (!strcasecmp(action, "recp_autocomplete")) {
2006                 recp_autocomplete(bstr("recp"));
2007         } else if (!strcasecmp(action, "cc_autocomplete")) {
2008                 recp_autocomplete(bstr("cc"));
2009         } else if (!strcasecmp(action, "bcc_autocomplete")) {
2010                 recp_autocomplete(bstr("bcc"));
2011         } else if (!strcasecmp(action, "display_address_book_middle_div")) {
2012                 display_address_book_middle_div();
2013         } else if (!strcasecmp(action, "display_address_book_inner_div")) {
2014                 display_address_book_inner_div();
2015         } else if (!strcasecmp(action, "set_floordiv_expanded")) {
2016                 set_floordiv_expanded(index[1]);
2017         } else if (!strcasecmp(action, "diagnostics")) {
2018                 output_headers(1, 1, 1, 0, 0, 0);
2019                 wprintf("Session: %d<hr />\n", WC->wc_session);
2020                 wprintf("Command: <br /><PRE>\n");
2021                 escputs(cmd);
2022                 wprintf("</PRE><hr />\n");
2023                 wprintf("Variables: <br /><PRE>\n");
2024                 dump_vars();
2025                 wprintf("</PRE><hr />\n");
2026                 wDumpContent(1);
2027         } else if (!strcasecmp(action, "updatenote")) {
2028                 updatenote();
2029         } else if (!strcasecmp(action, "ajax_update_note")) {
2030                 ajax_update_note();
2031         } else if (!strcasecmp(action, "display_room_directory")) {
2032                 display_room_directory();
2033         } else if (!strcasecmp(action, "display_pictureview")) {
2034                 display_pictureview();
2035         } else if (!strcasecmp(action, "download_file")) {
2036                 download_file(index[1]);
2037         } else if (!strcasecmp(action, "upload_file")) {
2038                 upload_file();
2039         }
2040
2041         /** When all else fais, display the main menu. */
2042         else {
2043                 display_main_menu();
2044         }
2045 }
2046 SKIP_ALL_THIS_CRAP:
2047         fflush(stdout);
2048         if (content != NULL) {
2049                 free(content);
2050                 content = NULL;
2051         }
2052         free_urls();
2053         if (WC->upload_length > 0) {
2054                 free(WC->upload);
2055                 WC->upload_length = 0;
2056         }
2057 }
2058
2059 /**
2060  * \brief Replacement for sleep() that uses select() in order to avoid SIGALRM
2061  * \param seconds how many seconds should we sleep?
2062  */
2063 void sleeeeeeeeeep(int seconds)
2064 {
2065         struct timeval tv;
2066
2067         tv.tv_sec = seconds;
2068         tv.tv_usec = 0;
2069         select(0, NULL, NULL, NULL, &tv);
2070 }
2071
2072
2073 /*@}*/