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 #include <stdio.h>
  17 #include <stdarg.h>
  18
  19 /**
  20  * String to unset the cookie.
  21  * Any date "in the past" will work, so I chose my birthday, right down to
  22  * the exact minute.  :)
  23  */
  24 static char *unset = "; expires=28-May-1971 18:10:00 GMT";
  25
  26 /**
  27  * \brief remove escaped strings from i.e. the url string (like %20 for blanks)
  28  * \param buf the buffer to examine
  29  */
  30 void unescape_input(char *buf)
  31 {
  32         int a, b;
  33         char hex[3];
  34         long buflen;
  35
  36         buflen = strlen(buf);
  37
  38         while ((buflen > 0) && (isspace(buf[buflen - 1]))){
  39                 buf[buflen - 1] = 0;
  40                 buflen --;
  41         }
  42
  43         for (a = 0; a < buflen; ++a) {
  44                 if (buf[a] == '+')
  45                         buf[a] = ' ';
  46                 if (buf[a] == '%') {
  47                         hex[0] = buf[a + 1];
  48                         hex[1] = buf[a + 2];
  49                         hex[2] = 0;
  50                         b = 0;
  51                         sscanf(hex, "%02x", &b);
  52                         buf[a] = (char) b;
  53                         memmove(&buf[a + 1], &buf[a + 3], buflen - a - 2);
  54
  55                         buflen -=2;
  56                 }
  57         }
  58
  59 }
  60
  61 /**
  62  * \brief Extract variables from the URL.
  63  * \param url URL supplied by the HTTP parser
  64  */
  65 void addurls(char *url)
  66 {
  67         char *up, *ptr;
  68         char buf[SIZ];
  69         int a, b, len;
  70         struct urlcontent *u;
  71
  72         up = url;
  73         while (!IsEmptyStr(up)) {
  74
  75                 /** locate the = sign */
  76                 safestrncpy(buf, up, sizeof buf);
  77                 b = (-1);
  78                 for (a = 255; a >= 0; --a)
  79                         if (buf[a] == '=')
  80                                 b = a;
  81                 if (b < 0)
  82                         return;
  83                 buf[b] = 0;
  84
  85                 u = (struct urlcontent *) malloc(sizeof(struct urlcontent));
  86                 u->next = WC->urlstrings;
  87                 WC->urlstrings = u;
  88                 safestrncpy(u->url_key, buf, sizeof u->url_key);
  89
  90                 /** now chop that part off */
  91                 for (a = 0; a <= b; ++a)
  92                         ++up;
  93
  94                 /** locate "&" and "?" delimiters */
  95                 ptr = up;
  96                 len = b = strlen(up);
  97                 for (a = 0; a < len; ++a) {
  98                         if ( (ptr[0] == '&') || (ptr[0] == '?') ) {
  99                                 b = a;
 100                                 break;
 101                         }
 102                         ++ptr;
 103                 }
 104                 ptr = up + b;
 105                 *ptr = '\0';
 106
 107                 len = b;
 108                 u->url_data = malloc(len + 2);
 109                 safestrncpy(u->url_data, up, b + 1);
 110                 u->url_data[b] = 0;
 111                 unescape_input(u->url_data);
 112                 up = ptr;
 113                 ++up;
 114
 115                 /* lprintf(9, "%s = %s\n", u->url_key, u->url_data); */
 116         }
 117 }
 118
 119 /**
 120  * \brief free urlstring memory
 121  */
 122 void free_urls(void)
 123 {
 124         struct urlcontent *u;
 125
 126         while (WC->urlstrings != NULL) {
 127                 free(WC->urlstrings->url_data);
 128                 u = WC->urlstrings->next;
 129                 free(WC->urlstrings);
 130                 WC->urlstrings = u;
 131         }
 132 }
 133
 134 /**
 135  * \brief Diagnostic function to display the contents of all variables
 136  */
 137 void dump_vars(void)
 138 {
 139         struct urlcontent *u;
 140
 141         for (u = WC->urlstrings; u != NULL; u = u->next) {
 142                 wprintf("%38s = %s\n", u->url_key, u->url_data);
 143         }
 144 }
 145
 146 /**
 147  * \brief Return the value of a variable supplied to the current web page (from the url or a form)
 148  * \param key The name of the variable we want
 149  */
 150 char *bstr(char *key)
 151 {
 152         struct urlcontent *u;
 153
 154         for (u = WC->urlstrings; u != NULL; u = u->next) {
 155                 if (!strcasecmp(u->url_key, key))
 156                         return (u->url_data);
 157         }
 158         return ("");
 159 }
 160
 161 /**
 162  * \brief web-printing funcion. uses our vsnprintf wrapper
 163  * \param format printf format string
 164  * \param ... the varargs to put into formatstring
 165  */
 166 void wprintf(const char *format,...)
 167 {
 168         va_list arg_ptr;
 169         char wbuf[4096];
 170
 171         va_start(arg_ptr, format);
 172         vsnprintf(wbuf, sizeof wbuf, format, arg_ptr);
 173         va_end(arg_ptr);
 174
 175         client_write(wbuf, strlen(wbuf));
 176 }
 177
 178
 179 /**
 180  * \brief wrap up an HTTP session, closes tags, etc.
 181  * \todo multiline params?
 182  * \param print_standard_html_footer should be set to 0 to transmit only, 1 to
 183  * append the main menu and closing tags, or 2 to
 184  * append the closing tags only.
 185  */
 186 void wDumpContent(int print_standard_html_footer)
 187 {
 188         if (print_standard_html_footer) {
 189                 wprintf("</div>\n");    /* end of "text" div */
 190                 do_template("trailing");
 191         }
 192
 193         /* If we've been saving it all up for one big output burst,
 194          * go ahead and do that now.
 195          */
 196         end_burst();
 197 }
 198
 199
 200 /**
 201  * \brief Copy a string, escaping characters which have meaning in HTML.
 202  * \param target target buffer
 203  * \param strbuf source buffer
 204  * \param nbsp If nonzero, spaces are converted to non-breaking spaces.
 205  * \param nolinebreaks if set, linebreaks are removed from the string.
 206  */
 207 void stresc(char *target, char *strbuf, int nbsp, int nolinebreaks)
 208 {
 209         int a, len;
 210         strcpy(target, "");
 211
 212         len = strlen(strbuf);
 213         for (a = 0; a < len; ++a) {
 214                 if (strbuf[a] == '<')
 215                         strcat(target, "&lt;");
 216                 else if (strbuf[a] == '>')
 217                         strcat(target, "&gt;");
 218                 else if (strbuf[a] == '&')
 219                         strcat(target, "&amp;");
 220                 else if (strbuf[a] == '\"')
 221                         strcat(target, "&quot;");
 222                 else if (strbuf[a] == '\'')
 223                         strcat(target, "&#39;");
 224                 else if (strbuf[a] == LB)
 225                         strcat(target, "<");
 226                 else if (strbuf[a] == RB)
 227                         strcat(target, ">");
 228                 else if (strbuf[a] == QU)
 229                         strcat(target, "\"");
 230                 else if ((strbuf[a] == 32) && (nbsp == 1))
 231                         strcat(target, "&nbsp;");
 232                 else if ((strbuf[a] == '\n') && (nolinebreaks))
 233                         strcat(target, "");     /* nothing */
 234                 else if ((strbuf[a] == '\r') && (nolinebreaks))
 235                         strcat(target, "");     /* nothing */
 236                 else
 237                         strncat(target, &strbuf[a], 1);
 238         }
 239 }
 240
 241 /**
 242  * \brief WHAT???
 243  * \param strbuf what???
 244  * \param nbsp If nonzero, spaces are converted to non-breaking spaces.
 245  * \param nolinebreaks if set, linebreaks are removed from the string.
 246  */
 247 void escputs1(char *strbuf, int nbsp, int nolinebreaks)
 248 {
 249         char *buf;
 250
 251         if (strbuf == NULL) return;
 252         buf = malloc( (3 * strlen(strbuf)) + SIZ );
 253         stresc(buf, strbuf, nbsp, nolinebreaks);
 254         wprintf("%s", buf);
 255         free(buf);
 256 }
 257
 258 /**
 259  * \brief static wrapper for ecsputs1
 260  * \param strbuf buffer to print escaped to client
 261  */
 262 void escputs(char *strbuf)
 263 {
 264         escputs1(strbuf, 0, 0);
 265 }
 266
 267 /**
 268  * \brief Escape a string for feeding out as a URL.
 269  * \param outbuf the output buffer
 270  * \param strbuf the input buffer
 271  */
 272 void urlesc(char *outbuf, char *strbuf)
 273 {
 274         int a, b, c, len, eclen, olen;
 275         char *ec = " #&;`'|*?-~<>^()[]{}/$\"\\";
 276
 277         strcpy(outbuf, "");
 278         len = strlen(strbuf);
 279         eclen = strlen(ec);
 280         olen = 0;
 281         for (a = 0; a < len; ++a) {
 282                 c = 0;
 283                 for (b = 0; b < eclen; ++b) {
 284                         if (strbuf[a] == ec[b])
 285                                 c = 1;
 286                 }
 287                 if (c == 1) {
 288                         sprintf(&outbuf[olen], "%%%02x", strbuf[a]);
 289                         olen += 3;
 290                 }
 291                 else
 292                         outbuf[olen ++] = strbuf[a];
 293         }
 294         outbuf[olen] = '\0';
 295 }
 296
 297 /**
 298  * \brief urlescape buffer and print it to the client
 299  * \param strbuf buffer to urlescape
 300  */
 301 void urlescputs(char *strbuf)
 302 {
 303         char outbuf[SIZ];
 304
 305         urlesc(outbuf, strbuf);
 306         wprintf("%s", outbuf);
 307 }
 308
 309
 310 /**
 311  * \brief Copy a string, escaping characters for JavaScript strings.
 312  * \param target output string
 313  * \param strbuf input string
 314  */
 315 void jsesc(char *target, char *strbuf)
 316 {
 317         int a, len;
 318
 319         target[0]='\0';
 320         len = strlen (strbuf);
 321         for (a = 0; a < len; ++a) {
 322                 if (strbuf[a] == '<')
 323                         strcat(target, "[");
 324                 else if (strbuf[a] == '>')
 325                         strcat(target, "]");
 326                 else if (strbuf[a] == '\"')
 327                         strcat(target, "&quot;");
 328                 else if (strbuf[a] == '&')
 329                         strcat(target, "&amp;;");
 330                 else if (strbuf[a] == '\'')
 331                         strcat(target, "\\'");
 332                 else {
 333                         strncat(target, &strbuf[a], 1);
 334                 }
 335         }
 336 }
 337
 338 /**
 339  * \brief escape and print java script
 340  * \param strbuf the js code
 341  */
 342 void jsescputs(char *strbuf)
 343 {
 344         char outbuf[SIZ];
 345
 346         jsesc(outbuf, strbuf);
 347         wprintf("%s", outbuf);
 348 }
 349
 350 /**
 351  * \brief Copy a string, escaping characters for message text hold
 352  * \param target target buffer
 353  * \param strbuf source buffer
 354  */
 355 void msgesc(char *target, char *strbuf)
 356 {
 357         int a, len;
 358
 359         *target='\0';
 360         len = strlen(strbuf);
 361         for (a = 0; a < len; ++a) {
 362                 if (strbuf[a] == '\n')
 363                         strcat(target, " ");
 364                 else if (strbuf[a] == '\r')
 365                         strcat(target, " ");
 366                 else if (strbuf[a] == '\'')
 367                         strcat(target, "&#39;");
 368                 else {
 369                         strncat(target, &strbuf[a], 1);
 370                 }
 371         }
 372 }
 373
 374 /**
 375  * \brief print a string to the client after cleaning it with msgesc() and stresc()
 376  * \param strbuf string to be printed
 377  */
 378 void msgescputs1( char *strbuf)
 379 {
 380         char *outbuf;
 381         char *outbuf2;
 382         int buflen;
 383
 384         if (strbuf == NULL) return;
 385         buflen = 3 * strlen(strbuf) + SIZ;
 386         outbuf = malloc( buflen);
 387         outbuf2 = malloc( buflen);
 388         msgesc(outbuf, strbuf);
 389         stresc(outbuf2, outbuf, 0, 0);
 390         wprintf("%s", outbuf2);
 391         free(outbuf);
 392         free(outbuf2);
 393 }
 394
 395 /**
 396  * \brief print a string to the client after cleaning it with msgesc()
 397  * \param strbuf string to be printed
 398  */
 399 void msgescputs(char *strbuf) {
 400         char *outbuf;
 401
 402         if (strbuf == NULL) return;
 403         outbuf = malloc( (3 * strlen(strbuf)) + SIZ);
 404         msgesc(outbuf, strbuf);
 405         wprintf("%s", outbuf);
 406         free(outbuf);
 407 }
 408
 409
 410
 411
 412 /**
 413  * \brief Output all that important stuff that the browser will want to see
 414  */
 415 void output_headers(    int do_httpheaders,     /**< 1 = output HTTP headers                          */
 416                         int do_htmlhead,        /**< 1 = output HTML <head> section and <body> opener */
 417
 418                         int do_room_banner,     /**< 0=no, 1=yes,
 419                                                                  * 2 = I'm going to embed my own, so don't open the
 420                                                                  *     <div id="content"> either.
 421                                                                  */
 422
 423                         int unset_cookies,      /**< 1 = session is terminating, so unset the cookies */
 424                         int suppress_check,     /**< 1 = suppress check for instant messages          */
 425                         int cache               /**< 1 = allow browser to cache this page             */
 426 ) {
 427         char cookie[1024];
 428         char httpnow[128];
 429
 430         wprintf("HTTP/1.1 200 OK\n");
 431         http_datestring(httpnow, sizeof httpnow, time(NULL));
 432
 433         if (do_httpheaders) {
 434                 wprintf("Content-type: text/html; charset=utf-8\r\n"
 435                         "Server: %s / %s\n"
 436                         "Connection: close\r\n",
 437                         SERVER, serv_info.serv_software
 438                 );
 439         }
 440
 441         if (cache) {
 442                 wprintf("Pragma: public\r\n"
 443                         "Cache-Control: max-age=3600, must-revalidate\r\n"
 444                         "Last-modified: %s\r\n",
 445                         httpnow
 446                 );
 447         }
 448         else {
 449                 wprintf("Pragma: no-cache\r\n"
 450                         "Cache-Control: no-store\r\n"
 451                         "Expires: -1\r\n"
 452                 );
 453         }
 454
 455         stuff_to_cookie(cookie, WC->wc_session, WC->wc_username,
 456                         WC->wc_password, WC->wc_roomname);
 457
 458         if (unset_cookies) {
 459                 wprintf("Set-cookie: webcit=%s; path=/\r\n", unset);
 460         } else {
 461                 wprintf("Set-cookie: webcit=%s; path=/\r\n", cookie);
 462                 if (server_cookie != NULL) {
 463                         wprintf("%s\n", server_cookie);
 464                 }
 465         }
 466
 467         if (do_htmlhead) {
 468                 begin_burst();
 469                 if (!access("static.local/webcit.css", R_OK)) {
 470                         svprintf("CSSLOCAL", WCS_STRING,
 471                            "<link href=\"static.local/webcit.css\" rel=\"stylesheet\" type=\"text/css\">"
 472                         );
 473                 }
 474                 do_template("head");
 475         }
 476
 477         /** ICONBAR */
 478         if (do_htmlhead) {
 479
 480
 481                 /** check for ImportantMessages (these display in a div overlaying the main screen) */
 482                 if (!IsEmptyStr(WC->ImportantMessage)) {
 483                         wprintf("<div id=\"important_message\">\n");
 484                         wprintf("<span class=\"imsg\">"
 485                                 "%s</span><br />\n", WC->ImportantMessage);
 486                         wprintf("</div>\n");
 487                         wprintf("<script type=\"text/javascript\">\n"
 488                                 "        setTimeout('hide_imsg_popup()', 3000); \n"
 489                                 "</script>\n");
 490                         safestrncpy(WC->ImportantMessage, "", sizeof WC->ImportantMessage);
 491                 }
 492
 493                 if ( (WC->logged_in) && (!unset_cookies) ) {
 494                         wprintf("<div id=\"iconbar\">");
 495                         do_selected_iconbar();
 496                         /** check for instant messages (these display in a new window) */
 497                         page_popup();
 498                         wprintf("</div>");
 499                 }
 500
 501                 if (do_room_banner == 1) {
 502                         wprintf("<div id=\"banner\">\n");
 503                         embed_room_banner(NULL, navbar_default);
 504                         wprintf("</div>\n");
 505                 }
 506         }
 507
 508         if (do_room_banner == 1) {
 509                 wprintf("<div id=\"content\">\n");
 510         }
 511 }
 512
 513
 514 /**
 515  * \brief Generic function to do an HTTP redirect.  Easy and fun.
 516  * \param whichpage target url to 302 to
 517  */
 518 void http_redirect(char *whichpage) {
 519         wprintf("HTTP/1.1 302 Moved Temporarily\n");
 520         wprintf("Location: %s\r\n", whichpage);
 521         wprintf("URI: %s\r\n", whichpage);
 522         wprintf("Content-type: text/html; charset=utf-8\r\n\r\n");
 523         wprintf("<html><body>");
 524         wprintf("Go <a href=\"%s\">here</A>.", whichpage);
 525         wprintf("</body></html>\n");
 526 }
 527
 528
 529
 530 /**
 531  * \brief Output a piece of content to the web browser
 532  */
 533 void http_transmit_thing(char *thing, size_t length, char *content_type,
 534                          int is_static) {
 535
 536         output_headers(0, 0, 0, 0, 0, is_static);
 537
 538         wprintf("Content-type: %s\r\n"
 539                 "Server: %s\r\n"
 540                 "Connection: close\r\n",
 541                 content_type,
 542                 SERVER);
 543
 544 #ifdef HAVE_ZLIB
 545         /** If we can send the data out compressed, please do so. */
 546         if (WC->gzip_ok) {
 547                 char *compressed_data = NULL;
 548                 uLongf compressed_len;
 549
 550                 compressed_len = (uLongf) ((length * 101) / 100) + 100;
 551                 compressed_data = malloc(compressed_len);
 552
 553                 if (compress_gzip((Bytef *) compressed_data,
 554                                   &compressed_len,
 555                                   (Bytef *) thing,
 556                                   (uLongf) length, Z_BEST_SPEED) == Z_OK) {
 557                         wprintf("Content-encoding: gzip\r\n"
 558                                 "Content-length: %ld\r\n"
 559                                 "\r\n",
 560                                 (long) compressed_len
 561                         );
 562                         client_write(compressed_data, (size_t)compressed_len);
 563                         free(compressed_data);
 564                         return;
 565                 }
 566         }
 567 #endif
 568
 569         /** No compression ... just send it out as-is */
 570         wprintf("Content-length: %ld\r\n"
 571                 "\r\n",
 572                 (long) length
 573         );
 574         client_write(thing, (size_t)length);
 575 }
 576
 577 /**
 578  * \brief print menu box like used in the floor view or admin interface.
 579  * This function takes pair of strings as va_args,
 580  * \param Title Title string of the box
 581  * \param Class CSS Class for the box
 582  * \param nLines How many string pairs should we print? (URL, UrlText)
 583  * \param ... Pairs of URL Strings and their Names
 584  */
 585 void print_menu_box(char* Title, char *Class, int nLines, ...)
 586 {
 587         va_list arg_list;
 588         long i;
 589
 590         svprintf("BOXTITLE", WCS_STRING, Title);
 591         do_template("beginbox");
 592
 593         wprintf("<ul class=\"%s\">", Class);
 594
 595         va_start(arg_list, nLines);
 596         for (i = 0; i < nLines; ++i)
 597         {
 598                 wprintf("<li><a href=\"%s\">", va_arg(arg_list, char *));
 599                 wprintf((char *) va_arg(arg_list, char *));
 600                 wprintf("</a></li>\n");
 601         }
 602         va_end (arg_list);
 603
 604         wprintf("</a></li>\n");
 605
 606         wprintf("</ul>");
 607
 608         do_template("endbox");
 609 }
 610
 611
 612 /**
 613  * \brief dump out static pages from disk
 614  * \param what the file urs to print
 615  */
 616 void output_static(char *what)
 617 {
 618         FILE *fp;
 619         struct stat statbuf;
 620         off_t bytes;
 621         char *bigbuffer;
 622         char content_type[128];
 623         int len;
 624
 625         fp = fopen(what, "rb");
 626         if (fp == NULL) {
 627                 lprintf(9, "output_static('%s')  -- NOT FOUND --\n", what);
 628                 wprintf("HTTP/1.1 404 %s\n", strerror(errno));
 629                 wprintf("Content-Type: text/plain\r\n");
 630                 wprintf("\r\n");
 631                 wprintf("Cannot open %s: %s\n", what, strerror(errno));
 632         } else {
 633                 len = strlen (what);
 634                 if (!strncasecmp(&what[len - 4], ".gif", 4))
 635                         safestrncpy(content_type, "image/gif", sizeof content_type);
 636                 else if (!strncasecmp(&what[len - 4], ".txt", 4))
 637                         safestrncpy(content_type, "text/plain", sizeof content_type);
 638                 else if (!strncasecmp(&what[len - 4], ".css", 4))
 639                         safestrncpy(content_type, "text/css", sizeof content_type);
 640                 else if (!strncasecmp(&what[len - 4], ".jpg", 4))
 641                         safestrncpy(content_type, "image/jpeg", sizeof content_type);
 642                 else if (!strncasecmp(&what[len - 4], ".png", 4))
 643                         safestrncpy(content_type, "image/png", sizeof content_type);
 644                 else if (!strncasecmp(&what[len - 4], ".ico", 4))
 645                         safestrncpy(content_type, "image/x-icon", sizeof content_type);
 646                 else if (!strncasecmp(&what[len - 5], ".html", 5))
 647                         safestrncpy(content_type, "text/html", sizeof content_type);
 648                 else if (!strncasecmp(&what[len - 4], ".htm", 4))
 649                         safestrncpy(content_type, "text/html", sizeof content_type);
 650                 else if (!strncasecmp(&what[len - 4], ".wml", 4))
 651                         safestrncpy(content_type, "text/vnd.wap.wml", sizeof content_type);
 652                 else if (!strncasecmp(&what[len - 5], ".wmls", 5))
 653                         safestrncpy(content_type, "text/vnd.wap.wmlscript", sizeof content_type);
 654                 else if (!strncasecmp(&what[len - 5], ".wmlc", 5))
 655                         safestrncpy(content_type, "application/vnd.wap.wmlc", sizeof content_type);
 656                 else if (!strncasecmp(&what[len - 6], ".wmlsc", 6))
 657                         safestrncpy(content_type, "application/vnd.wap.wmlscriptc", sizeof content_type);
 658                 else if (!strncasecmp(&what[len - 5], ".wbmp", 5))
 659                         safestrncpy(content_type, "image/vnd.wap.wbmp", sizeof content_type);
 660                 else if (!strncasecmp(&what[len - 3], ".js", 3))
 661                         safestrncpy(content_type, "text/javascript", sizeof content_type);
 662                 else
 663                         safestrncpy(content_type, "application/octet-stream", sizeof content_type);
 664
 665                 fstat(fileno(fp), &statbuf);
 666                 bytes = statbuf.st_size;
 667                 bigbuffer = malloc(bytes + 2);
 668                 fread(bigbuffer, bytes, 1, fp);
 669                 fclose(fp);
 670
 671                 lprintf(9, "output_static('%s')  %s\n", what, content_type);
 672                 http_transmit_thing(bigbuffer, (size_t)bytes, content_type, 1);
 673                 free(bigbuffer);
 674         }
 675         if (!strcasecmp(bstr("force_close_session"), "yes")) {
 676                 end_webcit_session();
 677         }
 678 }
 679
 680
 681 /**
 682  * \brief When the browser requests an image file from the Citadel server,
 683  * this function is called to transmit it.
 684  */
 685 void output_image()
 686 {
 687         char buf[SIZ];
 688         char *xferbuf = NULL;
 689         off_t bytes;
 690
 691         serv_printf("OIMG %s|%s", bstr("name"), bstr("parm"));
 692         serv_getln(buf, sizeof buf);
 693         if (buf[0] == '2') {
 694                 bytes = extract_long(&buf[4], 0);
 695                 xferbuf = malloc(bytes + 2);
 696
 697                 /** Read it from the server */
 698                 read_server_binary(xferbuf, bytes);
 699                 serv_puts("CLOS");
 700                 serv_getln(buf, sizeof buf);
 701
 702                 /** Write it to the browser */
 703                 http_transmit_thing(xferbuf, (size_t)bytes, "image/gif", 0);
 704                 free(xferbuf);
 705
 706         } else {
 707                 /**
 708                  * Instead of an ugly 404, send a 1x1 transparent GIF
 709                  * when there's no such image on the server.
 710                  */
 711                 output_static("static/blank.gif");
 712         }
 713
 714
 715
 716 }
 717
 718 /**
 719  * \brief Generic function to output an arbitrary MIME part from an arbitrary
 720  *        message number on the server.
 721  *
 722  * \param msgnum                Number of the item on the citadel server
 723  * \param partnum               The MIME part to be output
 724  * \param force_download        Nonzero to force set the Content-Type: header
 725  *                              to "application/octet-stream"
 726  */
 727 void mimepart(char *msgnum, char *partnum, int force_download)
 728 {
 729         char buf[256];
 730         off_t bytes;
 731         char content_type[256];
 732         char *content = NULL;
 733
 734         serv_printf("OPNA %s|%s", msgnum, partnum);
 735         serv_getln(buf, sizeof buf);
 736         if (buf[0] == '2') {
 737                 bytes = extract_long(&buf[4], 0);
 738                 content = malloc(bytes + 2);
 739                 if (force_download) {
 740                         strcpy(content_type, "application/octet-stream");
 741                 }
 742                 else {
 743                         extract_token(content_type, &buf[4], 3, '|', sizeof content_type);
 744                 }
 745                 output_headers(0, 0, 0, 0, 0, 0);
 746                 read_server_binary(content, bytes);
 747                 serv_puts("CLOS");
 748                 serv_getln(buf, sizeof buf);
 749                 http_transmit_thing(content, bytes, content_type, 0);
 750                 free(content);
 751         } else {
 752                 wprintf("HTTP/1.1 404 %s\n", &buf[4]);
 753                 output_headers(0, 0, 0, 0, 0, 0);
 754                 wprintf("Content-Type: text/plain\r\n");
 755                 wprintf("\r\n");
 756                 wprintf(_("An error occurred while retrieving this part: %s\n"), &buf[4]);
 757         }
 758
 759 }
 760
 761
 762 /**
 763  * \brief Read any MIME part of a message, from the server, into memory.
 764  * \param msgnum number of the message on the citadel server
 765  * \param partnum the MIME part to be loaded
 766  */
 767 char *load_mimepart(long msgnum, char *partnum)
 768 {
 769         char buf[SIZ];
 770         off_t bytes;
 771         char content_type[SIZ];
 772         char *content;
 773
 774         serv_printf("DLAT %ld|%s", msgnum, partnum);
 775         serv_getln(buf, sizeof buf);
 776         if (buf[0] == '6') {
 777                 bytes = extract_long(&buf[4], 0);
 778                 extract_token(content_type, &buf[4], 3, '|', sizeof content_type);
 779
 780                 content = malloc(bytes + 2);
 781                 serv_read(content, bytes);
 782
 783                 content[bytes] = 0;     /* null terminate for good measure */
 784                 return(content);
 785         }
 786         else {
 787                 return(NULL);
 788         }
 789
 790 }
 791
 792
 793 /**
 794  * \brief Convenience functions to display a page containing only a string
 795  * \param titlebarcolor color of the titlebar of the frame
 796  * \param titlebarmsg text to display in the title bar
 797  * \param messagetext body of the box
 798  */
 799 void convenience_page(char *titlebarcolor, char *titlebarmsg, char *messagetext)
 800 {
 801         wprintf("HTTP/1.1 200 OK\n");
 802         output_headers(1, 1, 2, 0, 0, 0);
 803         wprintf("<div id=\"banner\">\n");
 804         wprintf("<table width=100%% border=0 bgcolor=\"#%s\"><tr><td>", titlebarcolor);
 805         wprintf("<span class=\"titlebar\">%s</span>\n", titlebarmsg);
 806         wprintf("</td></tr></table>\n");
 807         wprintf("</div>\n<div id=\"content\">\n");
 808         escputs(messagetext);
 809
 810         wprintf("<hr />\n");
 811         wDumpContent(1);
 812 }
 813
 814
 815 /**
 816  * \brief Display a blank page.
 817  */
 818 void blank_page(void) {
 819         output_headers(1, 1, 0, 0, 0, 0);
 820         wDumpContent(2);
 821 }
 822
 823
 824 /**
 825  * \brief A template has been requested
 826  */
 827 void url_do_template(void) {
 828         do_template(bstr("template"));
 829 }
 830
 831
 832
 833 /**
 834  * \brief Offer to make any page the user's "start page."
 835  */
 836 void offer_start_page(void) {
 837         wprintf("<a href=\"change_start_page?startpage=");
 838         urlescputs(WC->this_page);
 839         wprintf("\">");
 840         wprintf(_("Make this my start page"));
 841         wprintf("</a>");
 842 /*
 843         wprintf("<br/><a href=\"rss?room=");
 844         urlescputs(WC->wc_roomname);
 845         wprintf("\" title=\"RSS 2.0 feed for ");
 846         escputs(WC->wc_roomname);
 847         wprintf("\"><img alt=\"RSS\" border=\"0\" src=\"static/xml_button.gif\"/></a>\n");
 848 */
 849 }
 850
 851
 852 /**
 853  * \brief Change the user's start page
 854  */
 855 void change_start_page(void) {
 856
 857         if (bstr("startpage") == NULL) {
 858                 safestrncpy(WC->ImportantMessage,
 859                         _("You no longer have a start page selected."),
 860                         sizeof WC->ImportantMessage);
 861                 display_main_menu();
 862                 return;
 863         }
 864
 865         set_preference("startpage", bstr("startpage"), 1);
 866
 867         output_headers(1, 1, 0, 0, 0, 0);
 868         do_template("newstartpage");
 869         wDumpContent(1);
 870 }
 871
 872
 873
 874 /**
 875  * \brief convenience function to indicate success
 876  * \param successmessage the mesage itself
 877  */
 878 void display_success(char *successmessage)
 879 {
 880         convenience_page("007700", "OK", successmessage);
 881 }
 882
 883
 884 /**
 885  * \brief Authorization required page
 886  * This is probably temporary and should be revisited
 887  * \param message message to put in header
 888 */
 889 void authorization_required(const char *message)
 890 {
 891         wprintf("HTTP/1.1 401 Authorization Required\r\n");
 892         wprintf("WWW-Authenticate: Basic realm=\"\"\r\n", serv_info.serv_humannode);
 893         wprintf("Content-Type: text/html\r\n\r\n");
 894         wprintf("<h1>");
 895         wprintf(_("Authorization Required"));
 896         wprintf("</h1>\r\n");
 897         wprintf(_("The resource you requested requires a valid username and password. "
 898                 "You could not be logged in: %s\n"), message);
 899         wDumpContent(0);
 900 }
 901
 902 /**
 903  * \brief This function is called by the MIME parser to handle data uploaded by
 904  *        the browser.  Form data, uploaded files, and the data from HTTP PUT
 905  *        operations (such as those found in GroupDAV) all arrive this way.
 906  *
 907  * \param name Name of the item being uploaded
 908  * \param filename Filename of the item being uploaded
 909  * \param partnum MIME part identifier (not needed)
 910  * \param disp MIME content disposition (not needed)
 911  * \param content The actual data
 912  * \param cbtype MIME content-type
 913  * \param cbcharset Character set
 914  * \param length Content length
 915  * \param encoding MIME encoding type (not needed)
 916  * \param userdata Not used here
 917  */
 918 void upload_handler(char *name, char *filename, char *partnum, char *disp,
 919                         void *content, char *cbtype, char *cbcharset,
 920                         size_t length, char *encoding, void *userdata)
 921 {
 922         struct urlcontent *u;
 923
 924         lprintf(9, "upload_handler() name=%s, type=%s, len=%d\n", name, cbtype, length);
 925
 926         /* Form fields */
 927         if ( (length > 0) && (IsEmptyStr(cbtype)) ) {
 928                 u = (struct urlcontent *) malloc(sizeof(struct urlcontent));
 929                 u->next = WC->urlstrings;
 930                 WC->urlstrings = u;
 931                 safestrncpy(u->url_key, name, sizeof(u->url_key));
 932                 u->url_data = malloc(length + 1);
 933                 memcpy(u->url_data, content, length);
 934                 u->url_data[length] = 0;
 935                 /* lprintf(9, "Key: <%s>  Data: <%s>\n", u->url_key, u->url_data); */
 936         }
 937
 938         /** Uploaded files */
 939         if ( (length > 0) && (!IsEmptyStr(cbtype)) ) {
 940                 WC->upload = malloc(length);
 941                 if (WC->upload != NULL) {
 942                         WC->upload_length = length;
 943                         safestrncpy(WC->upload_filename, filename,
 944                                         sizeof(WC->upload_filename));
 945                         safestrncpy(WC->upload_content_type, cbtype,
 946                                         sizeof(WC->upload_content_type));
 947                         memcpy(WC->upload, content, length);
 948                 }
 949                 else {
 950                         lprintf(3, "malloc() failed: %s\n", strerror(errno));
 951                 }
 952         }
 953
 954 }
 955
 956 /**
 957  * \brief Convenience functions to wrap around asynchronous ajax responses
 958  */
 959 void begin_ajax_response(void) {
 960         output_headers(0, 0, 0, 0, 0, 0);
 961
 962         wprintf("Content-type: text/html; charset=UTF-8\r\n"
 963                 "Server: %s\r\n"
 964                 "Connection: close\r\n"
 965                 "Pragma: no-cache\r\n"
 966                 "Cache-Control: no-cache\r\n"
 967                 "Expires: -1\r\n"
 968                 ,
 969                 SERVER);
 970         begin_burst();
 971 }
 972
 973 /**
 974  * \brief print ajax response footer
 975  */
 976 void end_ajax_response(void) {
 977         wprintf("\r\n");
 978         wDumpContent(0);
 979 }
 980
 981 /**
 982  * \brief Wraps a Citadel server command in an AJAX transaction.
 983  */
 984 void ajax_servcmd(void)
 985 {
 986         char buf[1024];
 987         char gcontent[1024];
 988         char *junk;
 989         size_t len;
 990
 991         begin_ajax_response();
 992
 993         serv_printf("%s", bstr("g_cmd"));
 994         serv_getln(buf, sizeof buf);
 995         wprintf("%s\n", buf);
 996
 997         if (buf[0] == '8') {
 998                 serv_printf("\n\n000");
 999         }
1000         if ((buf[0] == '1') || (buf[0] == '8')) {
1001                 while (serv_getln(gcontent, sizeof gcontent), strcmp(gcontent, "000")) {
1002                         wprintf("%s\n", gcontent);
1003                 }
1004                 wprintf("000");
1005         }
1006         if (buf[0] == '4') {
1007                 text_to_server(bstr("g_input"));
1008                 serv_puts("000");
1009         }
1010         if (buf[0] == '6') {
1011                 len = atol(&buf[4]);
1012                 junk = malloc(len);
1013                 serv_read(junk, len);
1014                 free(junk);
1015         }
1016         if (buf[0] == '7') {
1017                 len = atol(&buf[4]);
1018                 junk = malloc(len);
1019                 memset(junk, 0, len);
1020                 serv_write(junk, len);
1021                 free(junk);
1022         }
1023
1024         end_ajax_response();
1025
1026         /**
1027          * This is kind of an ugly hack, but this is the only place it can go.
1028          * If the command was GEXP, then the instant messenger window must be
1029          * running, so reset the "last_pager_check" watchdog timer so
1030          * that page_popup() doesn't try to open it a second time.
1031          */
1032         if (!strncasecmp(bstr("g_cmd"), "GEXP", 4)) {
1033                 WC->last_pager_check = time(NULL);
1034         }
1035 }
1036
1037
1038 /**
1039  * \brief Helper function for the asynchronous check to see if we need
1040  * to open the instant messenger window.
1041  */
1042 void seconds_since_last_gexp(void)
1043 {
1044         char buf[256];
1045
1046         begin_ajax_response();
1047         if ( (time(NULL) - WC->last_pager_check) < 30) {
1048                 wprintf("NO\n");
1049         }
1050         else {
1051                 serv_puts("NOOP");
1052                 serv_getln(buf, sizeof buf);
1053                 if (buf[3] == '*') {
1054                         wprintf("YES");
1055                 }
1056                 else {
1057                         wprintf("NO");
1058                 }
1059         }
1060         end_ajax_response();
1061 }
1062
1063
1064
1065
1066 /**
1067  * \brief Entry point for WebCit transaction
1068  */
1069 void session_loop(struct httprequest *req)
1070 {
1071         char cmd[1024];
1072         char action[1024];
1073         char arg[8][128];
1074         size_t sizes[10];
1075         char *index[10];
1076         char buf[SIZ];
1077         char request_method[128];
1078         char pathname[1024];
1079         int a, b, nBackDots, nEmpty;
1080         int ContentLength = 0;
1081         int BytesRead = 0;
1082         char ContentType[512];
1083         char *content = NULL;
1084         char *content_end = NULL;
1085         struct httprequest *hptr;
1086         char browser_host[256];
1087         char user_agent[256];
1088         int body_start = 0;
1089         int is_static = 0;
1090         int n_static = 0;
1091         int len = 0;
1092         /**
1093          * We stuff these with the values coming from the client cookies,
1094          * so we can use them to reconnect a timed out session if we have to.
1095          */
1096         char c_username[SIZ];
1097         char c_password[SIZ];
1098         char c_roomname[SIZ];
1099         char c_httpauth_string[SIZ];
1100         char c_httpauth_user[SIZ];
1101         char c_httpauth_pass[SIZ];
1102         char cookie[SIZ];
1103
1104         safestrncpy(c_username, "", sizeof c_username);
1105         safestrncpy(c_password, "", sizeof c_password);
1106         safestrncpy(c_roomname, "", sizeof c_roomname);
1107         safestrncpy(c_httpauth_string, "", sizeof c_httpauth_string);
1108         safestrncpy(c_httpauth_user, DEFAULT_HTTPAUTH_USER, sizeof c_httpauth_user);
1109         safestrncpy(c_httpauth_pass, DEFAULT_HTTPAUTH_PASS, sizeof c_httpauth_pass);
1110         strcpy(browser_host, "");
1111
1112         WC->upload_length = 0;
1113         WC->upload = NULL;
1114         WC->vars = NULL;
1115         WC->is_wap = 0;
1116
1117         hptr = req;
1118         if (hptr == NULL) return;
1119
1120         safestrncpy(cmd, hptr->line, sizeof cmd);
1121         hptr = hptr->next;
1122         extract_token(request_method, cmd, 0, ' ', sizeof request_method);
1123         extract_token(pathname, cmd, 1, ' ', sizeof pathname);
1124
1125         /** Figure out the action */
1126         index[0] = action;
1127         sizes[0] = sizeof action;
1128         for (a=1; a<9; a++)
1129         {
1130                 index[a] = arg[a-1];
1131                 sizes[a] = sizeof arg[a-1];
1132         }
1133 ////    index[9] = &foo; todo
1134         nBackDots = 0;
1135         nEmpty = 0;
1136         for ( a = 0; a < 9; ++a)
1137         {
1138                 extract_token(index[a], pathname, a + 1, '/', sizes[a]);
1139                 if (strstr(index[a], "?")) *strstr(index[a], "?") = 0;
1140                 if (strstr(index[a], "&")) *strstr(index[a], "&") = 0;
1141                 if (strstr(index[a], " ")) *strstr(index[a], " ") = 0;
1142                 if ((index[a][0] == '.') && (index[a][1] == '.'))
1143                         nBackDots++;
1144                 if (index[a][0] == '\0')
1145                         nEmpty++;
1146         }
1147
1148         while (hptr != NULL) {
1149                 safestrncpy(buf, hptr->line, sizeof buf);
1150                 /* lprintf(9, "HTTP HEADER: %s\n", buf); */
1151                 hptr = hptr->next;
1152
1153                 if (!strncasecmp(buf, "Cookie: webcit=", 15)) {
1154                         safestrncpy(cookie, &buf[15], sizeof cookie);
1155                         cookie_to_stuff(cookie, NULL,
1156                                         c_username, sizeof c_username,
1157                                         c_password, sizeof c_password,
1158                                         c_roomname, sizeof c_roomname);
1159                 }
1160                 else if (!strncasecmp(buf, "Authorization: Basic ", 21)) {
1161                         CtdlDecodeBase64(c_httpauth_string, &buf[21], strlen(&buf[21]));
1162                         extract_token(c_httpauth_user, c_httpauth_string, 0, ':', sizeof c_httpauth_user);
1163                         extract_token(c_httpauth_pass, c_httpauth_string, 1, ':', sizeof c_httpauth_pass);
1164                 }
1165                 else if (!strncasecmp(buf, "Content-length: ", 16)) {
1166                         ContentLength = atoi(&buf[16]);
1167                 }
1168                 else if (!strncasecmp(buf, "Content-type: ", 14)) {
1169                         safestrncpy(ContentType, &buf[14], sizeof ContentType);
1170                 }
1171                 else if (!strncasecmp(buf, "User-agent: ", 12)) {
1172                         safestrncpy(user_agent, &buf[12], sizeof user_agent);
1173                 }
1174                 else if (!strncasecmp(buf, "X-Forwarded-Host: ", 18)) {
1175                         if (follow_xff) {
1176                                 safestrncpy(WC->http_host, &buf[18], sizeof WC->http_host);
1177                         }
1178                 }
1179                 else if (!strncasecmp(buf, "Host: ", 6)) {
1180                         if (IsEmptyStr(WC->http_host)) {
1181                                 safestrncpy(WC->http_host, &buf[6], sizeof WC->http_host);
1182                         }
1183                 }
1184                 else if (!strncasecmp(buf, "X-Forwarded-For: ", 17)) {
1185                         safestrncpy(browser_host, &buf[17], sizeof browser_host);
1186                         while (num_tokens(browser_host, ',') > 1) {
1187                                 remove_token(browser_host, 0, ',');
1188                         }
1189                         striplt(browser_host);
1190                 }
1191                 /** Only WAP gateways explicitly name this content-type */
1192                 else if (strstr(buf, "text/vnd.wap.wml")) {
1193                         WC->is_wap = 1;
1194                 }
1195         }
1196
1197         if (ContentLength > 0) {
1198                 content = malloc(ContentLength + SIZ);
1199                 memset(content, 0, ContentLength + SIZ);
1200                 sprintf(content, "Content-type: %s\n"
1201                                 "Content-length: %d\n\n",
1202                                 ContentType, ContentLength);
1203                 body_start = strlen(content);
1204
1205                 /** Read the entire input data at once. */
1206                 client_read(WC->http_sock, &content[BytesRead+body_start], ContentLength);
1207
1208                 if (!strncasecmp(ContentType, "application/x-www-form-urlencoded", 33)) {
1209                         addurls(&content[body_start]);
1210                 } else if (!strncasecmp(ContentType, "multipart", 9)) {
1211                         content_end = content + ContentLength + body_start;
1212                         mime_parser(content, content_end, *upload_handler, NULL, NULL, NULL, 0);
1213                 }
1214         } else {
1215                 content = NULL;
1216         }
1217
1218         /** make a note of where we are in case the user wants to save it */
1219         safestrncpy(WC->this_page, cmd, sizeof(WC->this_page));
1220         remove_token(WC->this_page, 2, ' ');
1221         remove_token(WC->this_page, 0, ' ');
1222
1223         /** If there are variables in the URL, we must grab them now */
1224         len = strlen(cmd);
1225         for (a = 0; a < len; ++a) {
1226                 if ((cmd[a] == '?') || (cmd[a] == '&')) {
1227                         for (b = a; b < len; ++b) {
1228                                 if (isspace(cmd[b])){
1229                                         cmd[b] = 0;
1230                                         len = b - 1;
1231                                 }
1232                         }
1233                         addurls(&cmd[a + 1]);
1234                         cmd[a] = 0;
1235                         len = a - 1;
1236                 }
1237         }
1238
1239         /** If it's a "force 404" situation then display the error and bail. */
1240         if (!strcmp(action, "404")) {
1241                 wprintf("HTTP/1.1 404 Not found\r\n");
1242                 wprintf("Content-Type: text/plain\r\n");
1243                 wprintf("\r\n");
1244                 wprintf("Not found\r\n");
1245                 goto SKIP_ALL_THIS_CRAP;
1246         }
1247
1248         /** Static content can be sent without connecting to Citadel. */
1249         is_static = 0;
1250         for (a=0; a<ndirs; ++a) {
1251                 if (!strcasecmp(action, (char*)static_content_dirs[a])) { /* map web to disk location */
1252                         is_static = 1;
1253                         n_static = a;
1254                 }
1255         }
1256         if (is_static) {
1257                 if (nBackDots < 2)
1258                 {
1259                         snprintf(buf, sizeof buf, "%s/%s/%s/%s/%s/%s/%s/%s",
1260                                  static_dirs[n_static],
1261                                  index[1], index[2], index[3], index[4], index[5], index[6], index[7]);
1262                         for (a=0; a<8; ++a) {
1263                                 if (buf[strlen(buf)-1] == '/') {
1264                                         buf[strlen(buf)-1] = 0;
1265                                 }
1266                         }
1267                         for (a = 0; a < strlen(buf); ++a) {
1268                                 if (isspace(buf[a])) {
1269                                         buf[a] = 0;
1270                                 }
1271                         }
1272                         output_static(buf);
1273                 }
1274                 else
1275                 {
1276                         lprintf(9, "Suspicious request. Ignoring.");
1277                         wprintf("HTTP/1.1 404 Security check failed\r\n");
1278                         wprintf("Content-Type: text/plain\r\n");
1279                         wprintf("\r\n");
1280                         wprintf("Security check failed.\r\n");
1281                 }
1282                 goto SKIP_ALL_THIS_CRAP;        /* Don't try to connect */
1283         }
1284
1285         /* If the client sent a nonce that is incorrect, kill the request. */
1286         if (strlen(bstr("nonce")) > 0) {
1287                 lprintf(9, "Comparing supplied nonce %s to session nonce %ld\n",
1288                         bstr("nonce"), WC->nonce);
1289                 if (atoi(bstr("nonce")) != WC->nonce) {
1290                         lprintf(9, "Ignoring request with mismatched nonce.\n");
1291                         wprintf("HTTP/1.1 404 Security check failed\r\n");
1292                         wprintf("Content-Type: text/plain\r\n");
1293                         wprintf("\r\n");
1294                         wprintf("Security check failed.\r\n");
1295                         goto SKIP_ALL_THIS_CRAP;
1296                 }
1297         }
1298
1299         /**
1300          * If we're not connected to a Citadel server, try to hook up the
1301          * connection now.
1302          */
1303         if (!WC->connected) {
1304                 if (!strcasecmp(ctdlhost, "uds")) {
1305                         /* unix domain socket */
1306                         sprintf(buf, "%s/citadel.socket", ctdlport);
1307                         WC->serv_sock = uds_connectsock(buf);
1308                 }
1309                 else {
1310                         /* tcp socket */
1311                         WC->serv_sock = tcp_connectsock(ctdlhost, ctdlport);
1312                 }
1313
1314                 if (WC->serv_sock < 0) {
1315                         do_logout();
1316                         goto SKIP_ALL_THIS_CRAP;
1317                 }
1318                 else {
1319                         WC->connected = 1;
1320                         serv_getln(buf, sizeof buf);    /** get the server welcome message */
1321
1322                         /**
1323                          * From what host is our user connecting?  Go with
1324                          * the host at the other end of the HTTP socket,
1325                          * unless we are following X-Forwarded-For: headers
1326                          * and such a header has already turned up something.
1327                          */
1328                         if ( (!follow_xff) || (strlen(browser_host) == 0) ) {
1329                                 locate_host(browser_host, WC->http_sock);
1330                         }
1331
1332                         get_serv_info(browser_host, user_agent);
1333                         if (serv_info.serv_rev_level < MINIMUM_CIT_VERSION) {
1334                                 wprintf(_("You are connected to a Citadel "
1335                                         "server running Citadel %d.%02d. \n"
1336                                         "In order to run this version of WebCit "
1337                                         "you must also have Citadel %d.%02d or"
1338                                         " newer.\n\n\n"),
1339                                                 serv_info.serv_rev_level / 100,
1340                                                 serv_info.serv_rev_level % 100,
1341                                                 MINIMUM_CIT_VERSION / 100,
1342                                                 MINIMUM_CIT_VERSION % 100
1343                                         );
1344                                 end_webcit_session();
1345                                 goto SKIP_ALL_THIS_CRAP;
1346                         }
1347                 }
1348         }
1349
1350         /**
1351          * Functions which can be performed without logging in
1352          */
1353         if (!strcasecmp(action, "listsub")) {
1354                 do_listsub();
1355                 goto SKIP_ALL_THIS_CRAP;
1356         }
1357 #ifdef WEBCIT_WITH_CALENDAR_SERVICE
1358         if (!strcasecmp(action, "freebusy")) {
1359                 do_freebusy(cmd);
1360                 goto SKIP_ALL_THIS_CRAP;
1361         }
1362 #endif
1363
1364         /**
1365          * If we're not logged in, but we have HTTP Authentication data,
1366          * try logging in to Citadel using that.
1367          */
1368         if ((!WC->logged_in)
1369            && (strlen(c_httpauth_user) > 0)
1370            && (strlen(c_httpauth_pass) > 0)) {
1371                 serv_printf("USER %s", c_httpauth_user);
1372                 serv_getln(buf, sizeof buf);
1373                 if (buf[0] == '3') {
1374                         serv_printf("PASS %s", c_httpauth_pass);
1375                         serv_getln(buf, sizeof buf);
1376                         if (buf[0] == '2') {
1377                                 become_logged_in(c_httpauth_user,
1378                                                 c_httpauth_pass, buf);
1379                                 safestrncpy(WC->httpauth_user, c_httpauth_user, sizeof WC->httpauth_user);
1380                                 safestrncpy(WC->httpauth_pass, c_httpauth_pass, sizeof WC->httpauth_pass);
1381                         } else {
1382                                 /** Should only display when password is wrong */
1383                                 authorization_required(&buf[4]);
1384                                 goto SKIP_ALL_THIS_CRAP;
1385                         }
1386                 }
1387         }
1388
1389         /** This needs to run early */
1390         if (!strcasecmp(action, "rss")) {
1391                 display_rss(bstr("room"), request_method);
1392                 goto SKIP_ALL_THIS_CRAP;
1393         }
1394
1395         /**
1396          * The GroupDAV stuff relies on HTTP authentication instead of
1397          * our session's authentication.
1398          */
1399         if (!strncasecmp(action, "groupdav", 8)) {
1400                 groupdav_main(req, ContentType, /* do GroupDAV methods */
1401                         ContentLength, content+body_start);
1402                 if (!WC->logged_in) {
1403                         WC->killthis = 1;       /* If not logged in, don't */
1404                 }                               /* keep the session active */
1405                 goto SKIP_ALL_THIS_CRAP;
1406         }
1407
1408
1409         /**
1410          * Automatically send requests with any method other than GET or
1411          * POST to the GroupDAV code as well.
1412          */
1413         if ((strcasecmp(request_method, "GET")) && (strcasecmp(request_method, "POST"))) {
1414                 groupdav_main(req, ContentType, /** do GroupDAV methods */
1415                         ContentLength, content+body_start);
1416                 if (!WC->logged_in) {
1417                         WC->killthis = 1;       /** If not logged in, don't */
1418                 }                               /** keep the session active */
1419                 goto SKIP_ALL_THIS_CRAP;
1420         }
1421
1422         /**
1423          * If we're not logged in, but we have username and password cookies
1424          * supplied by the browser, try using them to log in.
1425          */
1426         if ((!WC->logged_in)
1427            && (!IsEmptyStr(c_username))
1428            && (!IsEmptyStr(c_password))) {
1429                 serv_printf("USER %s", c_username);
1430                 serv_getln(buf, sizeof buf);
1431                 if (buf[0] == '3') {
1432                         serv_printf("PASS %s", c_password);
1433                         serv_getln(buf, sizeof buf);
1434                         if (buf[0] == '2') {
1435                                 become_logged_in(c_username, c_password, buf);
1436                         }
1437                 }
1438         }
1439         /**
1440          * If we don't have a current room, but a cookie specifying the
1441          * current room is supplied, make an effort to go there.
1442          */
1443         if ((IsEmptyStr(WC->wc_roomname)) && (!IsEmptyStr(c_roomname))) {
1444                 serv_printf("GOTO %s", c_roomname);
1445                 serv_getln(buf, sizeof buf);
1446                 if (buf[0] == '2') {
1447                         safestrncpy(WC->wc_roomname, c_roomname, sizeof WC->wc_roomname);
1448                 }
1449         }
1450
1451         if (!strcasecmp(action, "image")) {
1452                 output_image();
1453
1454                 /**
1455                  * All functions handled below this point ... make sure we log in
1456                  * before doing anything else!
1457                  */
1458         } else if ((!WC->logged_in) && (!strcasecmp(action, "login"))) {
1459                 do_login();
1460         } else if (!WC->logged_in) {
1461                 display_login(NULL);
1462         }
1463
1464         /**
1465          * Various commands...
1466          */
1467
1468         else if (!strcasecmp(action, "do_welcome")) {
1469                 do_welcome();
1470         } else if (!strcasecmp(action, "blank")) {
1471                 blank_page();
1472         } else if (!strcasecmp(action, "do_template")) {
1473                 url_do_template();
1474         } else if (!strcasecmp(action, "display_aide_menu")) {
1475                 display_aide_menu();
1476         } else if (!strcasecmp(action, "display_main_menu")) {
1477                 display_main_menu();
1478         } else if (!strcasecmp(action, "who")) {
1479                 who();
1480         } else if (!strcasecmp(action, "sslg")) {
1481                 seconds_since_last_gexp();
1482         } else if (!strcasecmp(action, "who_inner_html")) {
1483                 begin_ajax_response();
1484                 who_inner_div();
1485                 end_ajax_response();
1486         } else if (!strcasecmp(action, "wholist_section")) {
1487                 begin_ajax_response();
1488                 wholist_section();
1489                 end_ajax_response();
1490         } else if (!strcasecmp(action, "new_messages_html")) {
1491                 begin_ajax_response();
1492                 new_messages_section();
1493                 end_ajax_response();
1494         } else if (!strcasecmp(action, "tasks_inner_html")) {
1495                 begin_ajax_response();
1496                 tasks_section();
1497                 end_ajax_response();
1498         } else if (!strcasecmp(action, "calendar_inner_html")) {
1499                 begin_ajax_response();
1500                 calendar_section();
1501                 end_ajax_response();
1502         } else if (!strcasecmp(action, "iconbar_ajax_menu")) {
1503                 begin_ajax_response();
1504                 do_iconbar();
1505                 end_ajax_response();
1506         } else if (!strcasecmp(action, "iconbar_ajax_rooms")) {
1507                 begin_ajax_response();
1508                 do_iconbar_roomlist();
1509                 end_ajax_response();
1510         } else if (!strcasecmp(action, "knrooms")) {
1511                 knrooms();
1512         } else if (!strcasecmp(action, "gotonext")) {
1513                 slrp_highest();
1514                 gotonext();
1515         } else if (!strcasecmp(action, "skip")) {
1516                 gotonext();
1517         } else if (!strcasecmp(action, "ungoto")) {
1518                 ungoto();
1519         } else if (!strcasecmp(action, "dotgoto")) {
1520                 if (WC->wc_view != VIEW_MAILBOX) {      /* dotgoto acts like dotskip when we're in a mailbox view */
1521                         slrp_highest();
1522                 }
1523                 smart_goto(bstr("room"));
1524         } else if (!strcasecmp(action, "dotskip")) {
1525                 smart_goto(bstr("room"));
1526         } else if (!strcasecmp(action, "termquit")) {
1527                 do_logout();
1528         } else if (!strcasecmp(action, "readnew")) {
1529                 readloop("readnew");
1530         } else if (!strcasecmp(action, "readold")) {
1531                 readloop("readold");
1532         } else if (!strcasecmp(action, "readfwd")) {
1533                 readloop("readfwd");
1534         } else if (!strcasecmp(action, "headers")) {
1535                 readloop("headers");
1536         } else if (!strcasecmp(action, "do_search")) {
1537                 readloop("do_search");
1538         } else if (!strcasecmp(action, "msg")) {
1539                 embed_message(index[1]);
1540         } else if (!strcasecmp(action, "printmsg")) {
1541                 print_message(index[1]);
1542         } else if (!strcasecmp(action, "msgheaders")) {
1543                 display_headers(index[1]);
1544         } else if (!strcasecmp(action, "wiki")) {
1545                 display_wiki_page();
1546         } else if (!strcasecmp(action, "display_enter")) {
1547                 display_enter();
1548         } else if (!strcasecmp(action, "post")) {
1549                 post_message();
1550         } else if (!strcasecmp(action, "move_msg")) {
1551                 move_msg();
1552         } else if (!strcasecmp(action, "delete_msg")) {
1553                 delete_msg();
1554         } else if (!strcasecmp(action, "userlist")) {
1555                 userlist();
1556         } else if (!strcasecmp(action, "showuser")) {
1557                 showuser();
1558         } else if (!strcasecmp(action, "display_page")) {
1559                 display_page();
1560         } else if (!strcasecmp(action, "page_user")) {
1561                 page_user();
1562         } else if (!strcasecmp(action, "chat")) {
1563                 do_chat();
1564         } else if (!strcasecmp(action, "display_private")) {
1565                 display_private("", 0);
1566         } else if (!strcasecmp(action, "goto_private")) {
1567                 goto_private();
1568         } else if (!strcasecmp(action, "zapped_list")) {
1569                 zapped_list();
1570         } else if (!strcasecmp(action, "display_zap")) {
1571                 display_zap();
1572         } else if (!strcasecmp(action, "zap")) {
1573                 zap();
1574         } else if (!strcasecmp(action, "display_entroom")) {
1575                 display_entroom();
1576         } else if (!strcasecmp(action, "entroom")) {
1577                 entroom();
1578         } else if (!strcasecmp(action, "display_whok")) {
1579                 display_whok();
1580         } else if (!strcasecmp(action, "do_invt_kick")) {
1581                 do_invt_kick();
1582         } else if (!strcasecmp(action, "display_editroom")) {
1583                 display_editroom();
1584         } else if (!strcasecmp(action, "netedit")) {
1585                 netedit();
1586         } else if (!strcasecmp(action, "editroom")) {
1587                 editroom();
1588         } else if (!strcasecmp(action, "display_editinfo")) {
1589                 display_edit(_("Room info"), "EINF 0", "RINF", "editinfo", 1);
1590         } else if (!strcasecmp(action, "editinfo")) {
1591                 save_edit(_("Room info"), "EINF 1", 1);
1592         } else if (!strcasecmp(action, "display_editbio")) {
1593                 sprintf(buf, "RBIO %s", WC->wc_fullname);
1594                 display_edit(_("Your bio"), "NOOP", buf, "editbio", 3);
1595         } else if (!strcasecmp(action, "editbio")) {
1596                 save_edit(_("Your bio"), "EBIO", 0);
1597         } else if (!strcasecmp(action, "confirm_move_msg")) {
1598                 confirm_move_msg();
1599         } else if (!strcasecmp(action, "delete_room")) {
1600                 delete_room();
1601         } else if (!strcasecmp(action, "validate")) {
1602                 validate();
1603         } else if (!strcasecmp(action, "display_editpic")) {
1604                 display_graphics_upload(_("your photo"),
1605                                         "UIMG 0|_userpic_",
1606                                         "editpic");
1607         } else if (!strcasecmp(action, "editpic")) {
1608                 do_graphics_upload("UIMG 1|_userpic_");
1609         } else if (!strcasecmp(action, "display_editroompic")) {
1610                 display_graphics_upload(_("the icon for this room"),
1611                                         "UIMG 0|_roompic_",
1612                                         "editroompic");
1613         } else if (!strcasecmp(action, "editroompic")) {
1614                 do_graphics_upload("UIMG 1|_roompic_");
1615         } else if (!strcasecmp(action, "delete_floor")) {
1616                 delete_floor();
1617         } else if (!strcasecmp(action, "rename_floor")) {
1618                 rename_floor();
1619         } else if (!strcasecmp(action, "create_floor")) {
1620                 create_floor();
1621         } else if (!strcasecmp(action, "display_editfloorpic")) {
1622                 sprintf(buf, "UIMG 0|_floorpic_|%s",
1623                         bstr("which_floor"));
1624                 display_graphics_upload(_("the icon for this floor"),
1625                                         buf,
1626                                         "editfloorpic");
1627         } else if (!strcasecmp(action, "editfloorpic")) {
1628                 sprintf(buf, "UIMG 1|_floorpic_|%s",
1629                         bstr("which_floor"));
1630                 do_graphics_upload(buf);
1631         } else if (!strcasecmp(action, "display_reg")) {
1632                 display_reg(0);
1633         } else if (!strcasecmp(action, "display_changepw")) {
1634                 display_changepw();
1635         } else if (!strcasecmp(action, "changepw")) {
1636                 changepw();
1637         } else if (!strcasecmp(action, "display_edit_node")) {
1638                 display_edit_node();
1639         } else if (!strcasecmp(action, "edit_node")) {
1640                 edit_node();
1641         } else if (!strcasecmp(action, "display_netconf")) {
1642                 display_netconf();
1643         } else if (!strcasecmp(action, "display_confirm_delete_node")) {
1644                 display_confirm_delete_node();
1645         } else if (!strcasecmp(action, "delete_node")) {
1646                 delete_node();
1647         } else if (!strcasecmp(action, "display_add_node")) {
1648                 display_add_node();
1649         } else if (!strcasecmp(action, "add_node")) {
1650                 add_node();
1651         } else if (!strcasecmp(action, "terminate_session")) {
1652                 slrp_highest();
1653                 terminate_session();
1654         } else if (!strcasecmp(action, "edit_me")) {
1655                 edit_me();
1656         } else if (!strcasecmp(action, "display_siteconfig")) {
1657                 display_siteconfig();
1658         } else if (!strcasecmp(action, "chat_recv")) {
1659                 chat_recv();
1660         } else if (!strcasecmp(action, "chat_send")) {
1661                 chat_send();
1662         } else if (!strcasecmp(action, "siteconfig")) {
1663                 siteconfig();
1664         } else if (!strcasecmp(action, "display_generic")) {
1665                 display_generic();
1666         } else if (!strcasecmp(action, "do_generic")) {
1667                 do_generic();
1668         } else if (!strcasecmp(action, "ajax_servcmd")) {
1669                 ajax_servcmd();
1670         } else if (!strcasecmp(action, "display_menubar")) {
1671                 display_menubar(1);
1672         } else if (!strcasecmp(action, "mimepart")) {
1673                 mimepart(index[1], index[2], 0);
1674         } else if (!strcasecmp(action, "mimepart_download")) {
1675                 mimepart(index[1], index[2], 1);
1676         } else if (!strcasecmp(action, "edit_vcard")) {
1677                 edit_vcard();
1678         } else if (!strcasecmp(action, "submit_vcard")) {
1679                 submit_vcard();
1680         } else if (!strcasecmp(action, "select_user_to_edit")) {
1681                 select_user_to_edit(NULL, NULL);
1682         } else if (!strcasecmp(action, "display_edituser")) {
1683                 display_edituser(NULL, 0);
1684         } else if (!strcasecmp(action, "edituser")) {
1685                 edituser();
1686         } else if (!strcasecmp(action, "create_user")) {
1687                 create_user();
1688         } else if (!strcasecmp(action, "changeview")) {
1689                 change_view();
1690         } else if (!strcasecmp(action, "change_start_page")) {
1691                 change_start_page();
1692         } else if (!strcasecmp(action, "display_floorconfig")) {
1693                 display_floorconfig(NULL);
1694         } else if (!strcasecmp(action, "toggle_self_service")) {
1695                 toggle_self_service();
1696 #ifdef WEBCIT_WITH_CALENDAR_SERVICE
1697         } else if (!strcasecmp(action, "display_edit_task")) {
1698                 display_edit_task();
1699         } else if (!strcasecmp(action, "save_task")) {
1700                 save_task();
1701         } else if (!strcasecmp(action, "display_edit_event")) {
1702                 display_edit_event();
1703         } else if (!strcasecmp(action, "save_event")) {
1704                 save_event();
1705         } else if (!strcasecmp(action, "respond_to_request")) {
1706                 respond_to_request();
1707         } else if (!strcasecmp(action, "handle_rsvp")) {
1708                 handle_rsvp();
1709 #endif
1710         } else if (!strcasecmp(action, "summary")) {
1711                 summary();
1712         } else if (!strcasecmp(action, "summary_inner_div")) {
1713                 begin_ajax_response();
1714                 summary_inner_div();
1715                 end_ajax_response();
1716         } else if (!strcasecmp(action, "display_customize_iconbar")) {
1717                 display_customize_iconbar();
1718         } else if (!strcasecmp(action, "commit_iconbar")) {
1719                 commit_iconbar();
1720         } else if (!strcasecmp(action, "set_room_policy")) {
1721                 set_room_policy();
1722         } else if (!strcasecmp(action, "display_inetconf")) {
1723                 display_inetconf();
1724         } else if (!strcasecmp(action, "save_inetconf")) {
1725                 save_inetconf();
1726         } else if (!strcasecmp(action, "display_smtpqueue")) {
1727                 display_smtpqueue();
1728         } else if (!strcasecmp(action, "display_smtpqueue_inner_div")) {
1729                 display_smtpqueue_inner_div();
1730         } else if (!strcasecmp(action, "display_sieve")) {
1731                 display_sieve();
1732         } else if (!strcasecmp(action, "save_sieve")) {
1733                 save_sieve();
1734         } else if (!strcasecmp(action, "display_add_remove_scripts")) {
1735                 display_add_remove_scripts(NULL);
1736         } else if (!strcasecmp(action, "create_script")) {
1737                 create_script();
1738         } else if (!strcasecmp(action, "delete_script")) {
1739                 delete_script();
1740         } else if (!strcasecmp(action, "setup_wizard")) {
1741                 do_setup_wizard();
1742         } else if (!strcasecmp(action, "display_preferences")) {
1743                 display_preferences();
1744         } else if (!strcasecmp(action, "set_preferences")) {
1745                 set_preferences();
1746         } else if (!strcasecmp(action, "recp_autocomplete")) {
1747                 recp_autocomplete(bstr("recp"));
1748         } else if (!strcasecmp(action, "cc_autocomplete")) {
1749                 recp_autocomplete(bstr("cc"));
1750         } else if (!strcasecmp(action, "bcc_autocomplete")) {
1751                 recp_autocomplete(bstr("bcc"));
1752         } else if (!strcasecmp(action, "display_address_book_middle_div")) {
1753                 display_address_book_middle_div();
1754         } else if (!strcasecmp(action, "display_address_book_inner_div")) {
1755                 display_address_book_inner_div();
1756         } else if (!strcasecmp(action, "set_floordiv_expanded")) {
1757                 set_floordiv_expanded(index[1]);
1758         } else if (!strcasecmp(action, "diagnostics")) {
1759                 output_headers(1, 1, 1, 0, 0, 0);
1760                 wprintf("Session: %d<hr />\n", WC->wc_session);
1761                 wprintf("Command: <br /><PRE>\n");
1762                 escputs(cmd);
1763                 wprintf("</PRE><hr />\n");
1764                 wprintf("Variables: <br /><PRE>\n");
1765                 dump_vars();
1766                 wprintf("</PRE><hr />\n");
1767                 wDumpContent(1);
1768         } else if (!strcasecmp(action, "updatenote")) {
1769                 updatenote();
1770         } else if (!strcasecmp(action, "display_room_directory")) {
1771                 display_room_directory();
1772         } else if (!strcasecmp(action, "download_file")) {
1773                 download_file(index[1]);
1774         } else if (!strcasecmp(action, "upload_file")) {
1775                 upload_file();
1776         }
1777
1778         /** When all else fais, display the main menu. */
1779         else {
1780                 display_main_menu();
1781         }
1782
1783 SKIP_ALL_THIS_CRAP:
1784         fflush(stdout);
1785         if (content != NULL) {
1786                 free(content);
1787                 content = NULL;
1788         }
1789         free_urls();
1790         if (WC->upload_length > 0) {
1791                 free(WC->upload);
1792                 WC->upload_length = 0;
1793         }
1794 }
1795
1796
1797 /*@}*/