webcit/webcit.c

   1 /*
   2  * $Id$
   3  *
   4  * This is the main transaction loop of the web service.  It maintains a
   5  * persistent session to the Citadel server, handling HTTP WebCit requests as
   6  * they arrive and presenting a user interface.
   7  *
   8  */
   9
  10 #include "webcit.h"
  11 #include "groupdav.h"
  12 #include "webserver.h"
  13 #include "mime_parser.h"
  14
  15 /*
  16  * Subdirectories from which the client may request static content
  17  */
  18 char *static_content_dirs[] = {
  19         "static",
  20         "tiny_mce"
  21 };
  22
  23 /*
  24  * String to unset the cookie.
  25  * Any date "in the past" will work, so I chose my birthday, right down to
  26  * the exact minute.  :)
  27  */
  28 static char *unset = "; expires=28-May-1971 18:10:00 GMT";
  29
  30 void unescape_input(char *buf)
  31 {
  32         int a, b;
  33         char hex[3];
  34
  35         while ((isspace(buf[strlen(buf) - 1])) && (strlen(buf) > 0))
  36                 buf[strlen(buf) - 1] = 0;
  37
  38         for (a = 0; a < strlen(buf); ++a) {
  39                 if (buf[a] == '+')
  40                         buf[a] = ' ';
  41                 if (buf[a] == '%') {
  42                         hex[0] = buf[a + 1];
  43                         hex[1] = buf[a + 2];
  44                         hex[2] = 0;
  45                         b = 0;
  46                         sscanf(hex, "%02x", &b);
  47                         buf[a] = (char) b;
  48                         strcpy(&buf[a + 1], &buf[a + 3]);
  49                 }
  50         }
  51
  52 }
  53
  54
  55 void addurls(char *url)
  56 {
  57         char *up, *ptr;
  58         char buf[SIZ];
  59         int a, b;
  60         struct urlcontent *u;
  61
  62         up = url;
  63         while (strlen(up) > 0) {
  64
  65                 /* locate the = sign */
  66                 safestrncpy(buf, up, sizeof buf);
  67                 b = (-1);
  68                 for (a = 255; a >= 0; --a)
  69                         if (buf[a] == '=')
  70                                 b = a;
  71                 if (b < 0)
  72                         return;
  73                 buf[b] = 0;
  74
  75                 u = (struct urlcontent *) malloc(sizeof(struct urlcontent));
  76                 u->next = WC->urlstrings;
  77                 WC->urlstrings = u;
  78                 safestrncpy(u->url_key, buf, sizeof u->url_key);
  79
  80                 /* now chop that part off */
  81                 for (a = 0; a <= b; ++a)
  82                         ++up;
  83
  84                 /* locate "&" and "?" delimiters */
  85                 ptr = up;
  86                 b = strlen(up);
  87                 for (a = 0; a < strlen(up); ++a) {
  88                         if ( (ptr[0] == '&') || (ptr[0] == '?') ) {
  89                                 b = a;
  90                                 break;
  91                         }
  92                         ++ptr;
  93                 }
  94                 ptr = up;
  95                 for (a = 0; a < b; ++a)
  96                         ++ptr;
  97                 strcpy(ptr, "");
  98
  99                 u->url_data = malloc(strlen(up) + 2);
 100                 safestrncpy(u->url_data, up, strlen(up) + 1);
 101                 u->url_data[b] = 0;
 102                 unescape_input(u->url_data);
 103                 up = ptr;
 104                 ++up;
 105         }
 106 }
 107
 108 void free_urls(void)
 109 {
 110         struct urlcontent *u;
 111
 112         while (WC->urlstrings != NULL) {
 113                 free(WC->urlstrings->url_data);
 114                 u = WC->urlstrings->next;
 115                 free(WC->urlstrings);
 116                 WC->urlstrings = u;
 117         }
 118 }
 119
 120 /*
 121  * Diagnostic function to display the contents of all variables
 122  */
 123 void dump_vars(void)
 124 {
 125         struct urlcontent *u;
 126
 127         for (u = WC->urlstrings; u != NULL; u = u->next) {
 128                 wprintf("%38s = %s\n", u->url_key, u->url_data);
 129         }
 130 }
 131
 132 char *bstr(char *key)
 133 {
 134         struct urlcontent *u;
 135
 136         for (u = WC->urlstrings; u != NULL; u = u->next) {
 137                 if (!strcasecmp(u->url_key, key))
 138                         return (u->url_data);
 139         }
 140         return ("");
 141 }
 142
 143
 144 void wprintf(const char *format,...)
 145 {
 146         va_list arg_ptr;
 147         char wbuf[4096];
 148
 149         va_start(arg_ptr, format);
 150         vsnprintf(wbuf, sizeof wbuf, format, arg_ptr);
 151         va_end(arg_ptr);
 152
 153         client_write(wbuf, strlen(wbuf));
 154 }
 155
 156
 157 /*
 158  * wDumpContent() wraps up an HTTP session, closes tags, etc.
 159  *
 160  * print_standard_html_footer should be set to 0 to transmit only, 1 to
 161  * append the main menu and closing tags, or 2 to
 162  * append the closing tags only.
 163  */
 164 void wDumpContent(int print_standard_html_footer)
 165 {
 166         if (print_standard_html_footer) {
 167                 wprintf("</div>\n");    /* end of "text" div */
 168                 do_template("trailing");
 169         }
 170
 171         /* If we've been saving it all up for one big output burst,
 172          * go ahead and do that now.
 173          */
 174         end_burst();
 175 }
 176
 177
 178 /*
 179  * Copy a string, escaping characters which have meaning in HTML.  If
 180  * nbsp is nonzero, spaces are converted to non-breaking spaces.
 181  */
 182 void stresc(char *target, char *strbuf, int nbsp, int nolinebreaks)
 183 {
 184         int a;
 185         strcpy(target, "");
 186
 187         for (a = 0; a < strlen(strbuf); ++a) {
 188                 if (strbuf[a] == '<')
 189                         strcat(target, "&lt;");
 190                 else if (strbuf[a] == '>')
 191                         strcat(target, "&gt;");
 192                 else if (strbuf[a] == '&')
 193                         strcat(target, "&amp;");
 194                 else if (strbuf[a] == '\"')
 195                         strcat(target, "&quot;");
 196                 else if (strbuf[a] == '\'')
 197                         strcat(target, "&#39;");
 198                 else if (strbuf[a] == LB)
 199                         strcat(target, "<");
 200                 else if (strbuf[a] == RB)
 201                         strcat(target, ">");
 202                 else if (strbuf[a] == QU)
 203                         strcat(target, "\"");
 204                 else if ((strbuf[a] == 32) && (nbsp == 1))
 205                         strcat(target, "&nbsp;");
 206                 else if ((strbuf[a] == '\n') && (nolinebreaks))
 207                         strcat(target, "");     /* nothing */
 208                 else if ((strbuf[a] == '\r') && (nolinebreaks))
 209                         strcat(target, "");     /* nothing */
 210                 else
 211                         strncat(target, &strbuf[a], 1);
 212         }
 213 }
 214
 215 void escputs1(char *strbuf, int nbsp, int nolinebreaks)
 216 {
 217         char *buf;
 218
 219         if (strbuf == NULL) return;
 220         buf = malloc( (3 * strlen(strbuf)) + SIZ );
 221         stresc(buf, strbuf, nbsp, nolinebreaks);
 222         wprintf("%s", buf);
 223         free(buf);
 224 }
 225
 226 void escputs(char *strbuf)
 227 {
 228         escputs1(strbuf, 0, 0);
 229 }
 230
 231 /*
 232  * Escape a string for feeding out as a URL.
 233  * Returns a pointer to a buffer that must be freed by the caller!
 234  */
 235 void urlesc(char *outbuf, char *strbuf)
 236 {
 237         int a, b, c;
 238         char *ec = " #&;`'|*?-~<>^()[]{}$\"\\";
 239
 240         strcpy(outbuf, "");
 241
 242         for (a = 0; a < strlen(strbuf); ++a) {
 243                 c = 0;
 244                 for (b = 0; b < strlen(ec); ++b) {
 245                         if (strbuf[a] == ec[b])
 246                                 c = 1;
 247                 }
 248                 b = strlen(outbuf);
 249                 if (c == 1)
 250                         sprintf(&outbuf[b], "%%%02x", strbuf[a]);
 251                 else
 252                         sprintf(&outbuf[b], "%c", strbuf[a]);
 253         }
 254 }
 255
 256 void urlescputs(char *strbuf)
 257 {
 258         char outbuf[SIZ];
 259
 260         urlesc(outbuf, strbuf);
 261         wprintf("%s", outbuf);
 262 }
 263
 264
 265 /*
 266  * Copy a string, escaping characters for JavaScript strings.
 267  */
 268 void jsesc(char *target, char *strbuf)
 269 {
 270         int a;
 271         strcpy(target, "");
 272
 273         for (a = 0; a < strlen(strbuf); ++a) {
 274                 if (strbuf[a] == '<')
 275                         strcat(target, "[");
 276                 else if (strbuf[a] == '>')
 277                         strcat(target, "]");
 278                 else if (strbuf[a] == '\"')
 279                         strcat(target, "&quot;");
 280                 else if (strbuf[a] == '&')
 281                         strcat(target, "&amp;;");
 282                 else if (strbuf[a] == '\'')
 283                         strcat(target, "\\'");
 284                 else {
 285                         strncat(target, &strbuf[a], 1);
 286                 }
 287         }
 288 }
 289
 290 void jsescputs(char *strbuf)
 291 {
 292         char outbuf[SIZ];
 293
 294         jsesc(outbuf, strbuf);
 295         wprintf("%s", outbuf);
 296 }
 297
 298 /*
 299  * Copy a string, escaping characters for message text hold
 300  */
 301 void msgesc(char *target, char *strbuf)
 302 {
 303         int a;
 304         strcpy(target, "");
 305
 306         for (a = 0; a < strlen(strbuf); ++a) {
 307                 if (strbuf[a] == '\n')
 308                         strcat(target, " ");
 309                 else if (strbuf[a] == '\r')
 310                         strcat(target, " ");
 311                 else if (strbuf[a] == '\'')
 312                         strcat(target, "&#39;");
 313                 else {
 314                         strncat(target, &strbuf[a], 1);
 315                 }
 316         }
 317 }
 318
 319 void msgescputs(char *strbuf) {
 320         char *outbuf;
 321
 322         if (strbuf == NULL) return;
 323         outbuf = malloc( (3 * strlen(strbuf)) + SIZ);
 324         msgesc(outbuf, strbuf);
 325         wprintf("%s", outbuf);
 326         free(outbuf);
 327 }
 328
 329
 330
 331
 332 /*
 333  * Output all that important stuff that the browser will want to see
 334  */
 335 void output_headers(    int do_httpheaders,     /* 1 = output HTTP headers                          */
 336                         int do_htmlhead,        /* 1 = output HTML <head> section and <body> opener */
 337
 338                         int do_room_banner,     /* 0=no, 1=yes,                                     */
 339                                                 /* 2 = I'm going to embed my own, so don't open the */
 340                                                 /*     <div id="content"> either.                   */
 341
 342                         int unset_cookies,      /* 1 = session is terminating, so unset the cookies */
 343                         int suppress_check,     /* 1 = suppress check for instant messages          */
 344                         int cache               /* 1 = allow browser to cache this page             */
 345 ) {
 346         char cookie[SIZ];
 347         char httpnow[SIZ];
 348
 349         wprintf("HTTP/1.1 200 OK\n");
 350         httpdate(httpnow, time(NULL));
 351
 352         if (do_httpheaders) {
 353                 wprintf("Content-type: text/html; charset=utf-8\r\n"
 354                         "Server: %s / %s\n"
 355                         "Connection: close\r\n",
 356                         SERVER, serv_info.serv_software
 357                 );
 358         }
 359
 360         if (cache) {
 361                 wprintf("Pragma: public\r\n"
 362                         "Cache-Control: max-age=3600, must-revalidate\r\n"
 363                         "Last-modified: %s\r\n",
 364                         httpnow
 365                 );
 366         }
 367         else {
 368                 wprintf("Pragma: no-cache\r\n"
 369                         "Cache-Control: no-store\r\n"
 370                 );
 371         }
 372
 373         stuff_to_cookie(cookie, WC->wc_session, WC->wc_username,
 374                         WC->wc_password, WC->wc_roomname);
 375
 376         if (unset_cookies) {
 377                 wprintf("Set-cookie: webcit=%s; path=/\r\n", unset);
 378         } else {
 379                 wprintf("Set-cookie: webcit=%s; path=/\r\n", cookie);
 380                 if (server_cookie != NULL) {
 381                         wprintf("%s\n", server_cookie);
 382                 }
 383         }
 384
 385         if (do_htmlhead) {
 386                 begin_burst();
 387                 do_template("head");
 388         }
 389
 390         /* ICONBAR */
 391         if (do_htmlhead) {
 392
 393                 /* check for instant messages (these display in a new window) */
 394                 page_popup();
 395
 396                 /* check for ImportantMessages (these display in a div overlaying the main screen) */
 397                 if (strlen(WC->ImportantMessage) > 0) {
 398                         wprintf("<div id=\"important_message\">\n");
 399                         wprintf("<SPAN CLASS=\"imsg\">"
 400                                 "%s</SPAN><br />\n", WC->ImportantMessage);
 401                         wprintf("</div>\n");
 402                         wprintf("<script type=\"text/javascript\">\n"
 403                                 "        setTimeout('hide_imsg_popup()', 3000); \n"
 404                                 "</script>\n");
 405                         safestrncpy(WC->ImportantMessage, "", sizeof WC->ImportantMessage);
 406                 }
 407                 if ( (WC->logged_in) && (!unset_cookies) ) {
 408                         wprintf("<div id=\"iconbar\">");
 409                         do_selected_iconbar();
 410                 }
 411                 if (do_room_banner == 1) {
 412                         wprintf("<div id=\"banner\">\n");
 413                         embed_room_banner(NULL, navbar_default);
 414                         wprintf("</div>\n");
 415                 }
 416         }
 417
 418         if (do_room_banner == 1) {
 419                 wprintf("<div id=\"content\">\n");
 420         }
 421 }
 422
 423
 424 /*
 425  * Generic function to do an HTTP redirect.  Easy and fun.
 426  */
 427 void http_redirect(char *whichpage) {
 428         wprintf("HTTP/1.1 302 Moved Temporarily\n");
 429         wprintf("Location: %s\r\n", whichpage);
 430         wprintf("URI: %s\r\n", whichpage);
 431         wprintf("Content-type: text/html; charset=utf-8\r\n\r\n");
 432         wprintf("<html><body>");
 433         wprintf("Go <a href=\"%s\">here</A>.", whichpage);
 434         wprintf("</body></html>\n");
 435 }
 436
 437
 438
 439 /*
 440  * Output a piece of content to the web browser
 441  */
 442 void http_transmit_thing(char *thing, size_t length, char *content_type,
 443                          int is_static) {
 444
 445         output_headers(0, 0, 0, 0, 0, is_static);
 446
 447         wprintf("Content-type: %s\r\n"
 448                 "Server: %s\r\n"
 449                 "Connection: close\r\n",
 450                 content_type,
 451                 SERVER);
 452
 453 #ifdef HAVE_ZLIB
 454         /* If we can send the data out compressed, please do so. */
 455         if (WC->gzip_ok) {
 456                 char *compressed_data = NULL;
 457                 uLongf compressed_len;
 458
 459                 compressed_len = (uLongf) ((length * 101) / 100) + 100;
 460                 compressed_data = malloc(compressed_len);
 461
 462                 if (compress_gzip((Bytef *) compressed_data,
 463                                   &compressed_len,
 464                                   (Bytef *) thing,
 465                                   (uLongf) length, Z_BEST_SPEED) == Z_OK) {
 466                         wprintf("Content-encoding: gzip\r\n"
 467                                 "Content-length: %ld\r\n"
 468                                 "\r\n",
 469                                 (long) compressed_len
 470                         );
 471                         client_write(compressed_data, (size_t)compressed_len);
 472                         free(compressed_data);
 473                         return;
 474                 }
 475         }
 476 #endif
 477
 478         /* No compression ... just send it out as-is */
 479         wprintf("Content-length: %ld\r\n"
 480                 "\r\n",
 481                 (long) length
 482         );
 483         client_write(thing, (size_t)length);
 484 }
 485
 486
 487
 488
 489 void output_static(char *what)
 490 {
 491         FILE *fp;
 492         struct stat statbuf;
 493         off_t bytes;
 494         char *bigbuffer;
 495         char content_type[128];
 496
 497         fp = fopen(what, "rb");
 498         if (fp == NULL) {
 499                 lprintf(9, "output_static('%s')  -- NOT FOUND --\n", what);
 500                 wprintf("HTTP/1.1 404 %s\n", strerror(errno));
 501                 wprintf("Content-Type: text/plain\r\n");
 502                 wprintf("\r\n");
 503                 wprintf("Cannot open %s: %s\n", what, strerror(errno));
 504         } else {
 505                 if (!strncasecmp(&what[strlen(what) - 4], ".gif", 4))
 506                         safestrncpy(content_type, "image/gif", sizeof content_type);
 507                 else if (!strncasecmp(&what[strlen(what) - 4], ".txt", 4))
 508                         safestrncpy(content_type, "text/plain", sizeof content_type);
 509                 else if (!strncasecmp(&what[strlen(what) - 4], ".css", 4))
 510                         safestrncpy(content_type, "text/css", sizeof content_type);
 511                 else if (!strncasecmp(&what[strlen(what) - 4], ".jpg", 4))
 512                         safestrncpy(content_type, "image/jpeg", sizeof content_type);
 513                 else if (!strncasecmp(&what[strlen(what) - 4], ".png", 4))
 514                         safestrncpy(content_type, "image/png", sizeof content_type);
 515                 else if (!strncasecmp(&what[strlen(what) - 4], ".ico", 4))
 516                         safestrncpy(content_type, "image/x-icon", sizeof content_type);
 517                 else if (!strncasecmp(&what[strlen(what) - 5], ".html", 5))
 518                         safestrncpy(content_type, "text/html", sizeof content_type);
 519                 else if (!strncasecmp(&what[strlen(what) - 4], ".htm", 4))
 520                         safestrncpy(content_type, "text/html", sizeof content_type);
 521                 else if (!strncasecmp(&what[strlen(what) - 4], ".wml", 4))
 522                         safestrncpy(content_type, "text/vnd.wap.wml", sizeof content_type);
 523                 else if (!strncasecmp(&what[strlen(what) - 5], ".wmls", 5))
 524                         safestrncpy(content_type, "text/vnd.wap.wmlscript", sizeof content_type);
 525                 else if (!strncasecmp(&what[strlen(what) - 5], ".wmlc", 5))
 526                         safestrncpy(content_type, "application/vnd.wap.wmlc", sizeof content_type);
 527                 else if (!strncasecmp(&what[strlen(what) - 6], ".wmlsc", 6))
 528                         safestrncpy(content_type, "application/vnd.wap.wmlscriptc", sizeof content_type);
 529                 else if (!strncasecmp(&what[strlen(what) - 5], ".wbmp", 5))
 530                         safestrncpy(content_type, "image/vnd.wap.wbmp", sizeof content_type);
 531                 else if (!strncasecmp(&what[strlen(what) - 3], ".js", 3))
 532                         safestrncpy(content_type, "text/javascript", sizeof content_type);
 533                 else
 534                         safestrncpy(content_type, "application/octet-stream", sizeof content_type);
 535
 536                 fstat(fileno(fp), &statbuf);
 537                 bytes = statbuf.st_size;
 538                 bigbuffer = malloc(bytes + 2);
 539                 fread(bigbuffer, bytes, 1, fp);
 540                 fclose(fp);
 541
 542                 lprintf(9, "output_static('%s')  %s\n", what, content_type);
 543                 http_transmit_thing(bigbuffer, (size_t)bytes, content_type, 1);
 544                 free(bigbuffer);
 545         }
 546         if (!strcasecmp(bstr("force_close_session"), "yes")) {
 547                 end_webcit_session();
 548         }
 549 }
 550
 551
 552 /*
 553  * When the browser requests an image file from the Citadel server,
 554  * this function is called to transmit it.
 555  */
 556 void output_image()
 557 {
 558         char buf[SIZ];
 559         char *xferbuf = NULL;
 560         off_t bytes;
 561
 562         serv_printf("OIMG %s|%s", bstr("name"), bstr("parm"));
 563         serv_getln(buf, sizeof buf);
 564         if (buf[0] == '2') {
 565                 bytes = extract_long(&buf[4], 0);
 566                 xferbuf = malloc(bytes + 2);
 567
 568                 /* Read it from the server */
 569                 read_server_binary(xferbuf, bytes);
 570                 serv_puts("CLOS");
 571                 serv_getln(buf, sizeof buf);
 572
 573                 /* Write it to the browser */
 574                 http_transmit_thing(xferbuf, (size_t)bytes, "image/gif", 0);
 575                 free(xferbuf);
 576
 577         } else {
 578                 /* Instead of an ugly 404, send a 1x1 transparent GIF
 579                  * when there's no such image on the server.
 580                  */
 581                 output_static("static/blank.gif");
 582         }
 583
 584
 585
 586 }
 587
 588 /*
 589  * Generic function to output an arbitrary MIME part from an arbitrary
 590  * message number on the server.
 591  */
 592 void mimepart(char *msgnum, char *partnum)
 593 {
 594         char buf[SIZ];
 595         off_t bytes;
 596         char content_type[SIZ];
 597         char *content = NULL;
 598
 599         serv_printf("OPNA %s|%s", msgnum, partnum);
 600         serv_getln(buf, sizeof buf);
 601         if (buf[0] == '2') {
 602                 bytes = extract_long(&buf[4], 0);
 603                 content = malloc(bytes + 2);
 604                 extract_token(content_type, &buf[4], 3, '|', sizeof content_type);
 605                 output_headers(0, 0, 0, 0, 0, 0);
 606                 read_server_binary(content, bytes);
 607                 serv_puts("CLOS");
 608                 serv_getln(buf, sizeof buf);
 609                 http_transmit_thing(content, bytes, content_type, 0);
 610                 free(content);
 611         } else {
 612                 wprintf("HTTP/1.1 404 %s\n", &buf[4]);
 613                 output_headers(0, 0, 0, 0, 0, 0);
 614                 wprintf("Content-Type: text/plain\r\n");
 615                 wprintf("\r\n");
 616                 wprintf(_("An error occurred while retrieving this part: %s\n"), &buf[4]);
 617         }
 618
 619 }
 620
 621
 622 /*
 623  * Read any MIME part of a message, from the server, into memory.
 624  */
 625 char *load_mimepart(long msgnum, char *partnum)
 626 {
 627         char buf[SIZ];
 628         off_t bytes;
 629         char content_type[SIZ];
 630         char *content;
 631
 632         serv_printf("OPNA %ld|%s", msgnum, partnum);
 633         serv_getln(buf, sizeof buf);
 634         if (buf[0] == '2') {
 635                 bytes = extract_long(&buf[4], 0);
 636                 extract_token(content_type, &buf[4], 3, '|', sizeof content_type);
 637
 638                 content = malloc(bytes + 2);
 639                 read_server_binary(content, bytes);
 640
 641                 serv_puts("CLOS");
 642                 serv_getln(buf, sizeof buf);
 643                 content[bytes] = 0;     /* null terminate for good measure */
 644                 return(content);
 645         }
 646         else {
 647                 return(NULL);
 648         }
 649
 650 }
 651
 652
 653 /*
 654  * Convenience functions to display a page containing only a string
 655  */
 656 void convenience_page(char *titlebarcolor, char *titlebarmsg, char *messagetext)
 657 {
 658         wprintf("HTTP/1.1 200 OK\n");
 659         output_headers(1, 1, 2, 0, 0, 0);
 660         wprintf("<div id=\"banner\">\n");
 661         wprintf("<TABLE WIDTH=100%% BORDER=0 BGCOLOR=\"#%s\"><TR><TD>", titlebarcolor);
 662         wprintf("<SPAN CLASS=\"titlebar\">%s</SPAN>\n", titlebarmsg);
 663         wprintf("</TD></TR></TABLE>\n");
 664         wprintf("</div>\n<div id=\"content\">\n");
 665         escputs(messagetext);
 666
 667         wprintf("<hr />\n");
 668         wDumpContent(1);
 669 }
 670
 671
 672 /*
 673  * Display a blank page.
 674  */
 675 void blank_page(void) {
 676         output_headers(1, 1, 0, 0, 0, 0);
 677         wDumpContent(2);
 678 }
 679
 680
 681 /*
 682  * A template has been requested
 683  */
 684 void url_do_template(void) {
 685         do_template(bstr("template"));
 686 }
 687
 688
 689
 690 /*
 691  * Offer to make any page the user's "start page."
 692  */
 693 void offer_start_page(void) {
 694         wprintf("<a href=\"change_start_page?startpage=");
 695         urlescputs(WC->this_page);
 696         wprintf("\"><FONT SIZE=-2 COLOR=\"#AAAAAA\">");
 697         wprintf(_("Make this my start page"));
 698         wprintf("</FONT></A>");
 699 /*
 700         wprintf("<br/><a href=\"rss?room=");
 701         urlescputs(WC->wc_roomname);
 702         wprintf("\" title=\"RSS 2.0 feed for ");
 703         escputs(WC->wc_roomname);
 704         wprintf("\"><img alt=\"RSS\" border=\"0\" src=\"static/xml_button.gif\"/></a>\n");
 705 */
 706 }
 707
 708
 709 /*
 710  * Change the user's start page
 711  */
 712 void change_start_page(void) {
 713
 714         if (bstr("startpage") == NULL) {
 715                 safestrncpy(WC->ImportantMessage,
 716                         _("You no longer have a start page selected."),
 717                         sizeof WC->ImportantMessage);
 718                 display_main_menu();
 719                 return;
 720         }
 721
 722         set_preference("startpage", bstr("startpage"), 1);
 723
 724         output_headers(1, 1, 0, 0, 0, 0);
 725         do_template("newstartpage");
 726         wDumpContent(1);
 727 }
 728
 729
 730
 731
 732 void display_success(char *successmessage)
 733 {
 734         convenience_page("007700", "OK", successmessage);
 735 }
 736
 737
 738 /* Authorization required page */
 739 /* This is probably temporary and should be revisited */
 740 void authorization_required(const char *message)
 741 {
 742         wprintf("HTTP/1.1 401 Authorization Required\r\n");
 743         wprintf("WWW-Authenticate: Basic realm=\"\"\r\n", serv_info.serv_humannode);
 744         wprintf("Content-Type: text/html\r\n\r\n");
 745         wprintf("<h1>");
 746         wprintf(_("Authorization Required"));
 747         wprintf("</h1>\r\n");
 748         wprintf(_("The resource you requested requires a valid username and password. "
 749                 "You could not be logged in: %s\n"), message);
 750         wDumpContent(0);
 751 }
 752
 753
 754 void upload_handler(char *name, char *filename, char *partnum, char *disp,
 755                         void *content, char *cbtype, char *cbcharset,
 756                         size_t length, char *encoding, void *userdata)
 757 {
 758         struct urlcontent *u;
 759
 760         /* lprintf(9, "upload_handler() name=%s, type=%s, len=%d\n",
 761                 name, cbtype, length); */
 762
 763         /* Form fields */
 764         if ( (length > 0) && (strlen(cbtype) == 0) ) {
 765                 u = (struct urlcontent *) malloc(sizeof(struct urlcontent));
 766                 u->next = WC->urlstrings;
 767                 WC->urlstrings = u;
 768                 safestrncpy(u->url_key, name, sizeof(u->url_key));
 769                 u->url_data = malloc(length + 1);
 770                 memcpy(u->url_data, content, length);
 771                 u->url_data[length] = 0;
 772         }
 773
 774         /* Uploaded files */
 775         if ( (length > 0) && (strlen(cbtype) > 0) ) {
 776                 WC->upload = malloc(length);
 777                 if (WC->upload != NULL) {
 778                         WC->upload_length = length;
 779                         safestrncpy(WC->upload_filename, filename,
 780                                         sizeof(WC->upload_filename));
 781                         safestrncpy(WC->upload_content_type, cbtype,
 782                                         sizeof(WC->upload_content_type));
 783                         memcpy(WC->upload, content, length);
 784                 }
 785                 else {
 786                         lprintf(3, "malloc() failed: %s\n", strerror(errno));
 787                 }
 788         }
 789
 790 }
 791
 792 /*
 793  * Convenience functions to wrap around asynchronous ajax responses
 794  */
 795 void begin_ajax_response(void) {
 796         output_headers(0, 0, 0, 0, 0, 0);
 797
 798         wprintf("Content-type: text/html; charset=UTF-8\r\n"
 799                 "Server: %s\r\n"
 800                 "Connection: close\r\n"
 801                 "Pragma: no-cache\r\n"
 802                 "Cache-Control: no-cache\r\n",
 803                 SERVER);
 804         begin_burst();
 805 }
 806
 807 void end_ajax_response(void) {
 808         wprintf("\r\n");
 809         wDumpContent(0);
 810 }
 811
 812 void ajax_servcmd(void)
 813 {
 814         char buf[1024];
 815         char gcontent[1024];
 816         char *junk;
 817         size_t len;
 818
 819         begin_ajax_response();
 820
 821         serv_printf("%s", bstr("g_cmd"));
 822         serv_getln(buf, sizeof buf);
 823         wprintf("%s\n", buf);
 824
 825         if (buf[0] == '8') {
 826                 serv_printf("\n\n000");
 827         }
 828         if ((buf[0] == '1') || (buf[0] == '8')) {
 829                 while (serv_getln(gcontent, sizeof gcontent), strcmp(gcontent, "000")) {
 830                         wprintf("%s\n", gcontent);
 831                 }
 832                 wprintf("000");
 833         }
 834         if (buf[0] == '4') {
 835                 text_to_server(bstr("g_input"), 0);
 836                 serv_puts("000");
 837         }
 838         if (buf[0] == '6') {
 839                 len = atol(&buf[4]);
 840                 junk = malloc(len);
 841                 serv_read(junk, len);
 842                 free(junk);
 843         }
 844         if (buf[0] == '7') {
 845                 len = atol(&buf[4]);
 846                 junk = malloc(len);
 847                 memset(junk, 0, len);
 848                 serv_write(junk, len);
 849                 free(junk);
 850         }
 851
 852         end_ajax_response();
 853
 854         /* This is kind of an ugly hack, but this is the only place it can go.
 855          * If the command was GEXP, then the instant messenger window must be
 856          * running, so reset the "last_pager_check" watchdog timer so
 857          * that page_popup() doesn't try to open it a second time.
 858          */
 859         if (!strncasecmp(bstr("g_cmd"), "GEXP", 4)) {
 860                 WC->last_pager_check = time(NULL);
 861         }
 862 }
 863
 864
 865 /*
 866  * Helper function for the asynchronous check to see if we need
 867  * to open the instant messenger window.
 868  */
 869 void seconds_since_last_gexp(void)
 870 {
 871         char buf[256];
 872
 873         begin_ajax_response();
 874         if ( (time(NULL) - WC->last_pager_check) < 30) {
 875                 wprintf("NO\n");
 876         }
 877         else {
 878                 serv_puts("NOOP");
 879                 serv_getln(buf, sizeof buf);
 880                 if (buf[3] == '*') {
 881                         wprintf("YES");
 882                 }
 883                 else {
 884                         wprintf("NO");
 885                 }
 886         }
 887         end_ajax_response();
 888 }
 889
 890
 891
 892
 893 /*
 894  * Entry point for WebCit transaction
 895  */
 896 void session_loop(struct httprequest *req)
 897 {
 898         char cmd[1024];
 899         char action[1024];
 900         char arg1[128];
 901         char arg2[128];
 902         char arg3[128];
 903         char arg4[128];
 904         char arg5[128];
 905         char arg6[128];
 906         char arg7[128];
 907         char buf[SIZ];
 908         char request_method[128];
 909         char pathname[1024];
 910         int a, b;
 911         int ContentLength = 0;
 912         int BytesRead = 0;
 913         char ContentType[512];
 914         char *content = NULL;
 915         char *content_end = NULL;
 916         struct httprequest *hptr;
 917         char browser_host[256];
 918         char user_agent[256];
 919         int body_start = 0;
 920         int is_static = 0;
 921
 922         /* We stuff these with the values coming from the client cookies,
 923          * so we can use them to reconnect a timed out session if we have to.
 924          */
 925         char c_username[SIZ];
 926         char c_password[SIZ];
 927         char c_roomname[SIZ];
 928         char c_httpauth_string[SIZ];
 929         char c_httpauth_user[SIZ];
 930         char c_httpauth_pass[SIZ];
 931         char cookie[SIZ];
 932
 933         safestrncpy(c_username, "", sizeof c_username);
 934         safestrncpy(c_password, "", sizeof c_password);
 935         safestrncpy(c_roomname, "", sizeof c_roomname);
 936         safestrncpy(c_httpauth_string, "", sizeof c_httpauth_string);
 937         safestrncpy(c_httpauth_user, DEFAULT_HTTPAUTH_USER, sizeof c_httpauth_user);
 938         safestrncpy(c_httpauth_pass, DEFAULT_HTTPAUTH_PASS, sizeof c_httpauth_pass);
 939         strcpy(browser_host, "");
 940
 941         WC->upload_length = 0;
 942         WC->upload = NULL;
 943         WC->vars = NULL;
 944         WC->is_wap = 0;
 945
 946         hptr = req;
 947         if (hptr == NULL) return;
 948
 949         safestrncpy(cmd, hptr->line, sizeof cmd);
 950         hptr = hptr->next;
 951         extract_token(request_method, cmd, 0, ' ', sizeof request_method);
 952         extract_token(pathname, cmd, 1, ' ', sizeof pathname);
 953
 954         /* Figure out the action */
 955         extract_token(action, pathname, 1, '/', sizeof action);
 956         if (strstr(action, "?")) *strstr(action, "?") = 0;
 957         if (strstr(action, "&")) *strstr(action, "&") = 0;
 958         if (strstr(action, " ")) *strstr(action, " ") = 0;
 959
 960         extract_token(arg1, pathname, 2, '/', sizeof arg1);
 961         if (strstr(arg1, "?")) *strstr(arg1, "?") = 0;
 962         if (strstr(arg1, "&")) *strstr(arg1, "&") = 0;
 963         if (strstr(arg1, " ")) *strstr(arg1, " ") = 0;
 964
 965         extract_token(arg2, pathname, 3, '/', sizeof arg2);
 966         if (strstr(arg2, "?")) *strstr(arg2, "?") = 0;
 967         if (strstr(arg2, "&")) *strstr(arg2, "&") = 0;
 968         if (strstr(arg2, " ")) *strstr(arg2, " ") = 0;
 969
 970         extract_token(arg3, pathname, 4, '/', sizeof arg3);
 971         if (strstr(arg3, "?")) *strstr(arg3, "?") = 0;
 972         if (strstr(arg3, "&")) *strstr(arg3, "&") = 0;
 973         if (strstr(arg3, " ")) *strstr(arg3, " ") = 0;
 974
 975         extract_token(arg4, pathname, 5, '/', sizeof arg4);
 976         if (strstr(arg4, "?")) *strstr(arg4, "?") = 0;
 977         if (strstr(arg4, "&")) *strstr(arg4, "&") = 0;
 978         if (strstr(arg4, " ")) *strstr(arg4, " ") = 0;
 979
 980         extract_token(arg5, pathname, 6, '/', sizeof arg5);
 981         if (strstr(arg5, "?")) *strstr(arg5, "?") = 0;
 982         if (strstr(arg5, "&")) *strstr(arg5, "&") = 0;
 983         if (strstr(arg5, " ")) *strstr(arg5, " ") = 0;
 984
 985         extract_token(arg6, pathname, 7, '/', sizeof arg6);
 986         if (strstr(arg6, "?")) *strstr(arg6, "?") = 0;
 987         if (strstr(arg6, "&")) *strstr(arg6, "&") = 0;
 988         if (strstr(arg6, " ")) *strstr(arg6, " ") = 0;
 989
 990         extract_token(arg7, pathname, 8, '/', sizeof arg7);
 991         if (strstr(arg7, "?")) *strstr(arg7, "?") = 0;
 992         if (strstr(arg7, "&")) *strstr(arg7, "&") = 0;
 993         if (strstr(arg7, " ")) *strstr(arg7, " ") = 0;
 994
 995         while (hptr != NULL) {
 996                 safestrncpy(buf, hptr->line, sizeof buf);
 997                 hptr = hptr->next;
 998
 999                 if (!strncasecmp(buf, "Cookie: webcit=", 15)) {
1000                         safestrncpy(cookie, &buf[15], sizeof cookie);
1001                         cookie_to_stuff(cookie, NULL,
1002                                         c_username, sizeof c_username,
1003                                         c_password, sizeof c_password,
1004                                         c_roomname, sizeof c_roomname);
1005                 }
1006                 else if (!strncasecmp(buf, "Authorization: Basic ", 21)) {
1007                         CtdlDecodeBase64(c_httpauth_string, &buf[21], strlen(&buf[21]));
1008                         extract_token(c_httpauth_user, c_httpauth_string, 0, ':', sizeof c_httpauth_user);
1009                         extract_token(c_httpauth_pass, c_httpauth_string, 1, ':', sizeof c_httpauth_pass);
1010                 }
1011                 else if (!strncasecmp(buf, "Content-length: ", 16)) {
1012                         ContentLength = atoi(&buf[16]);
1013                 }
1014                 else if (!strncasecmp(buf, "Content-type: ", 14)) {
1015                         safestrncpy(ContentType, &buf[14], sizeof ContentType);
1016                 }
1017                 else if (!strncasecmp(buf, "User-agent: ", 12)) {
1018                         safestrncpy(user_agent, &buf[12], sizeof user_agent);
1019                 }
1020                 else if (!strncasecmp(buf, "Host: ", 6)) {
1021                         safestrncpy(WC->http_host, &buf[6], sizeof WC->http_host);
1022                 }
1023                 else if (!strncasecmp(buf, "X-Forwarded-For: ", 17)) {
1024                         safestrncpy(browser_host, &buf[17], sizeof browser_host);
1025                         while (num_tokens(browser_host, ',') > 1) {
1026                                 remove_token(browser_host, 0, ',');
1027                         }
1028                         striplt(browser_host);
1029                 }
1030                 /* Only WAP gateways explicitly name this content-type */
1031                 else if (strstr(buf, "text/vnd.wap.wml")) {
1032                         WC->is_wap = 1;
1033                 }
1034         }
1035
1036         if (ContentLength > 0) {
1037                 content = malloc(ContentLength + SIZ);
1038                 memset(content, 0, ContentLength + SIZ);
1039                 sprintf(content, "Content-type: %s\n"
1040                                 "Content-length: %d\n\n",
1041                                 ContentType, ContentLength);
1042                 body_start = strlen(content);
1043
1044                 /* Read the entire input data at once. */
1045                 client_read(WC->http_sock, &content[BytesRead+body_start],
1046                         ContentLength);
1047
1048                 if (!strncasecmp(ContentType,
1049                               "application/x-www-form-urlencoded", 33)) {
1050                         addurls(&content[body_start]);
1051                 } else if (!strncasecmp(ContentType, "multipart", 9)) {
1052                         content_end = content + ContentLength + body_start;
1053                         mime_parser(content, content_end, *upload_handler,
1054                                         NULL, NULL, NULL, 0);
1055                 }
1056         } else {
1057                 content = NULL;
1058         }
1059
1060         /* make a note of where we are in case the user wants to save it */
1061         safestrncpy(WC->this_page, cmd, sizeof(WC->this_page));
1062         remove_token(WC->this_page, 2, ' ');
1063         remove_token(WC->this_page, 0, ' ');
1064
1065         /* If there are variables in the URL, we must grab them now */
1066         for (a = 0; a < strlen(cmd); ++a) {
1067                 if ((cmd[a] == '?') || (cmd[a] == '&')) {
1068                         for (b = a; b < strlen(cmd); ++b)
1069                                 if (isspace(cmd[b]))
1070                                         cmd[b] = 0;
1071                         addurls(&cmd[a + 1]);
1072                         cmd[a] = 0;
1073                 }
1074         }
1075
1076
1077         /* Static content can be sent without connecting to Citadel. */
1078         is_static = 0;
1079         for (a=0; a<(sizeof(static_content_dirs) / sizeof(char *)); ++a) {
1080                 if (!strcasecmp(action, static_content_dirs[a])) {
1081                         is_static = 1;
1082                 }
1083         }
1084         if (is_static) {
1085                 snprintf(buf, sizeof buf, "%s/%s/%s/%s/%s/%s/%s/%s",
1086                         action, arg1, arg2, arg3, arg4, arg5, arg6, arg7);
1087                 for (a=0; a<8; ++a) {
1088                         if (buf[strlen(buf)-1] == '/') {
1089                                 buf[strlen(buf)-1] = 0;
1090                         }
1091                 }
1092                 for (a = 0; a < strlen(buf); ++a) {
1093                         if (isspace(buf[a])) {
1094                                 buf[a] = 0;
1095                         }
1096                 }
1097                 output_static(buf);
1098                 goto SKIP_ALL_THIS_CRAP;        /* Don't try to connect */
1099         }
1100
1101         /*
1102          * If we're not connected to a Citadel server, try to hook up the
1103          * connection now.
1104          */
1105         if (!WC->connected) {
1106                 if (!strcasecmp(ctdlhost, "uds")) {
1107                         /* unix domain socket */
1108                         sprintf(buf, "%s/citadel.socket", ctdlport);
1109                         WC->serv_sock = uds_connectsock(buf);
1110                 }
1111                 else {
1112                         /* tcp socket */
1113                         WC->serv_sock = tcp_connectsock(ctdlhost, ctdlport);
1114                 }
1115
1116                 if (WC->serv_sock < 0) {
1117                         do_logout();
1118                         goto SKIP_ALL_THIS_CRAP;
1119                 }
1120                 else {
1121                         WC->connected = 1;
1122                         serv_getln(buf, sizeof buf);    /* get the server welcome message */
1123
1124                         /* From what host is our user connecting?  Go with
1125                          * the host at the other end of the HTTP socket,
1126                          * unless we are following X-Forwarded-For: headers
1127                          * and such a header has already turned up something.
1128                          */
1129                         if ( (!follow_xff) || (strlen(browser_host) == 0) ) {
1130                                 locate_host(browser_host, WC->http_sock);
1131                         }
1132
1133                         get_serv_info(browser_host, user_agent);
1134                         if (serv_info.serv_rev_level < MINIMUM_CIT_VERSION) {
1135                                 wprintf(_("You are connected to a Citadel "
1136                                         "server running Citadel %d.%02d. \n"
1137                                         "In order to run this version of WebCit "
1138                                         "you must also have Citadel %d.%02d or"
1139                                         " newer.\n\n\n"),
1140                                                 serv_info.serv_rev_level / 100,
1141                                                 serv_info.serv_rev_level % 100,
1142                                                 MINIMUM_CIT_VERSION / 100,
1143                                                 MINIMUM_CIT_VERSION % 100
1144                                         );
1145                                 end_webcit_session();
1146                                 goto SKIP_ALL_THIS_CRAP;
1147                         }
1148                 }
1149         }
1150
1151         /*
1152          * Functions which can be performed without logging in
1153          */
1154         if (!strcasecmp(action, "listsub")) {
1155                 do_listsub();
1156                 goto SKIP_ALL_THIS_CRAP;
1157         }
1158 #ifdef WEBCIT_WITH_CALENDAR_SERVICE
1159         if (!strcasecmp(action, "freebusy")) {
1160                 do_freebusy(cmd);
1161                 goto SKIP_ALL_THIS_CRAP;
1162         }
1163 #endif
1164
1165         /*
1166          * If we're not logged in, but we have HTTP Authentication data,
1167          * try logging in to Citadel using that.
1168          */
1169         if ((!WC->logged_in)
1170            && (strlen(c_httpauth_user) > 0)
1171            && (strlen(c_httpauth_pass) > 0)) {
1172                 serv_printf("USER %s", c_httpauth_user);
1173                 serv_getln(buf, sizeof buf);
1174                 if (buf[0] == '3') {
1175                         serv_printf("PASS %s", c_httpauth_pass);
1176                         serv_getln(buf, sizeof buf);
1177                         if (buf[0] == '2') {
1178                                 become_logged_in(c_httpauth_user,
1179                                                 c_httpauth_pass, buf);
1180                                 safestrncpy(WC->httpauth_user, c_httpauth_user, sizeof WC->httpauth_user);
1181                                 safestrncpy(WC->httpauth_pass, c_httpauth_pass, sizeof WC->httpauth_pass);
1182                         } else {
1183                                 /* Should only display when password is wrong */
1184                                 authorization_required(&buf[4]);
1185                                 goto SKIP_ALL_THIS_CRAP;
1186                         }
1187                 }
1188         }
1189
1190         /* This needs to run early */
1191         if (!strcasecmp(action, "rss")) {
1192                 display_rss(bstr("room"), request_method);
1193                 goto SKIP_ALL_THIS_CRAP;
1194         }
1195
1196         /*
1197          * The GroupDAV stuff relies on HTTP authentication instead of
1198          * our session's authentication.
1199          */
1200         if (!strncasecmp(action, "groupdav", 8)) {
1201                 groupdav_main(req, ContentType, /* do GroupDAV methods */
1202                         ContentLength, content+body_start);
1203                 if (!WC->logged_in) {
1204                         WC->killthis = 1;       /* If not logged in, don't */
1205                 }                               /* keep the session active */
1206                 goto SKIP_ALL_THIS_CRAP;
1207         }
1208
1209
1210         /*
1211          * Automatically send requests with any method other than GET or
1212          * POST to the GroupDAV code as well.
1213          */
1214         if ((strcasecmp(request_method, "GET")) && (strcasecmp(request_method, "POST"))) {
1215                 groupdav_main(req, ContentType, /* do GroupDAV methods */
1216                         ContentLength, content+body_start);
1217                 if (!WC->logged_in) {
1218                         WC->killthis = 1;       /* If not logged in, don't */
1219                 }                               /* keep the session active */
1220                 goto SKIP_ALL_THIS_CRAP;
1221         }
1222
1223         /*
1224          * If we're not logged in, but we have username and password cookies
1225          * supplied by the browser, try using them to log in.
1226          */
1227         if ((!WC->logged_in)
1228            && (strlen(c_username) > 0)
1229            && (strlen(c_password) > 0)) {
1230                 serv_printf("USER %s", c_username);
1231                 serv_getln(buf, sizeof buf);
1232                 if (buf[0] == '3') {
1233                         serv_printf("PASS %s", c_password);
1234                         serv_getln(buf, sizeof buf);
1235                         if (buf[0] == '2') {
1236                                 become_logged_in(c_username, c_password, buf);
1237                         }
1238                 }
1239         }
1240         /*
1241          * If we don't have a current room, but a cookie specifying the
1242          * current room is supplied, make an effort to go there.
1243          */
1244         if ((strlen(WC->wc_roomname) == 0) && (strlen(c_roomname) > 0)) {
1245                 serv_printf("GOTO %s", c_roomname);
1246                 serv_getln(buf, sizeof buf);
1247                 if (buf[0] == '2') {
1248                         safestrncpy(WC->wc_roomname, c_roomname, sizeof WC->wc_roomname);
1249                 }
1250         }
1251
1252         if (!strcasecmp(action, "image")) {
1253                 output_image();
1254
1255         /*
1256          * All functions handled below this point ... make sure we log in
1257          * before doing anything else!
1258          */
1259         } else if ((!WC->logged_in) && (!strcasecmp(action, "login"))) {
1260                 do_login();
1261         } else if (!WC->logged_in) {
1262                 display_login(NULL);
1263         }
1264
1265         /*
1266          * Various commands...
1267          */
1268
1269         else if (!strcasecmp(action, "do_welcome")) {
1270                 do_welcome();
1271         } else if (!strcasecmp(action, "blank")) {
1272                 blank_page();
1273         } else if (!strcasecmp(action, "do_template")) {
1274                 url_do_template();
1275         } else if (!strcasecmp(action, "display_aide_menu")) {
1276                 display_aide_menu();
1277         } else if (!strcasecmp(action, "display_main_menu")) {
1278                 display_main_menu();
1279         } else if (!strcasecmp(action, "who")) {
1280                 who();
1281         } else if (!strcasecmp(action, "sslg")) {
1282                 seconds_since_last_gexp();
1283         } else if (!strcasecmp(action, "who_inner_html")) {
1284                 begin_ajax_response();
1285                 who_inner_div();
1286                 end_ajax_response();
1287         } else if (!strcasecmp(action, "iconbar_ajax_menu")) {
1288                 begin_ajax_response();
1289                 do_iconbar();
1290                 end_ajax_response();
1291         } else if (!strcasecmp(action, "iconbar_ajax_rooms")) {
1292                 begin_ajax_response();
1293                 do_iconbar_roomlist();
1294                 end_ajax_response();
1295         } else if (!strcasecmp(action, "knrooms")) {
1296                 knrooms();
1297         } else if (!strcasecmp(action, "gotonext")) {
1298                 slrp_highest();
1299                 gotonext();
1300         } else if (!strcasecmp(action, "skip")) {
1301                 gotonext();
1302         } else if (!strcasecmp(action, "ungoto")) {
1303                 ungoto();
1304         } else if (!strcasecmp(action, "dotgoto")) {
1305                 if (WC->wc_view != VIEW_MAILBOX) {      /* dotgoto acts like dotskip when we're in a mailbox view */
1306                         slrp_highest();
1307                 }
1308                 smart_goto(bstr("room"));
1309         } else if (!strcasecmp(action, "dotskip")) {
1310                 smart_goto(bstr("room"));
1311         } else if (!strcasecmp(action, "termquit")) {
1312                 do_logout();
1313         } else if (!strcasecmp(action, "readnew")) {
1314                 readloop("readnew");
1315         } else if (!strcasecmp(action, "readold")) {
1316                 readloop("readold");
1317         } else if (!strcasecmp(action, "readfwd")) {
1318                 readloop("readfwd");
1319         } else if (!strcasecmp(action, "headers")) {
1320                 readloop("headers");
1321         } else if (!strcasecmp(action, "msg")) {
1322                 embed_message(arg1);
1323         } else if (!strcasecmp(action, "printmsg")) {
1324                 print_message(arg1);
1325         } else if (!strcasecmp(action, "msgheaders")) {
1326                 display_headers(arg1);
1327         } else if (!strcasecmp(action, "display_enter")) {
1328                 display_enter();
1329         } else if (!strcasecmp(action, "post")) {
1330                 post_message();
1331         } else if (!strcasecmp(action, "move_msg")) {
1332                 move_msg();
1333         } else if (!strcasecmp(action, "delete_msg")) {
1334                 delete_msg();
1335         } else if (!strcasecmp(action, "userlist")) {
1336                 userlist();
1337         } else if (!strcasecmp(action, "showuser")) {
1338                 showuser();
1339         } else if (!strcasecmp(action, "display_page")) {
1340                 display_page();
1341         } else if (!strcasecmp(action, "page_user")) {
1342                 page_user();
1343         } else if (!strcasecmp(action, "chat")) {
1344                 do_chat();
1345         } else if (!strcasecmp(action, "display_private")) {
1346                 display_private("", 0);
1347         } else if (!strcasecmp(action, "goto_private")) {
1348                 goto_private();
1349         } else if (!strcasecmp(action, "zapped_list")) {
1350                 zapped_list();
1351         } else if (!strcasecmp(action, "display_zap")) {
1352                 display_zap();
1353         } else if (!strcasecmp(action, "zap")) {
1354                 zap();
1355         } else if (!strcasecmp(action, "display_entroom")) {
1356                 display_entroom();
1357         } else if (!strcasecmp(action, "entroom")) {
1358                 entroom();
1359         } else if (!strcasecmp(action, "display_whok")) {
1360                 display_whok();
1361         } else if (!strcasecmp(action, "do_invt_kick")) {
1362                 do_invt_kick();
1363         } else if (!strcasecmp(action, "display_editroom")) {
1364                 display_editroom();
1365         } else if (!strcasecmp(action, "netedit")) {
1366                 netedit();
1367         } else if (!strcasecmp(action, "editroom")) {
1368                 editroom();
1369         } else if (!strcasecmp(action, "display_editinfo")) {
1370                 display_edit(_("Room info"), "EINF 0", "RINF", "/editinfo", 1);
1371         } else if (!strcasecmp(action, "editinfo")) {
1372                 save_edit(_("Room info"), "EINF 1", 1);
1373         } else if (!strcasecmp(action, "display_editbio")) {
1374                 sprintf(buf, "RBIO %s", WC->wc_username);
1375                 display_edit(_("Your bio"), "NOOP", buf, "editbio", 3);
1376         } else if (!strcasecmp(action, "editbio")) {
1377                 save_edit(_("Your bio"), "EBIO", 0);
1378         } else if (!strcasecmp(action, "confirm_move_msg")) {
1379                 confirm_move_msg();
1380         } else if (!strcasecmp(action, "delete_room")) {
1381                 delete_room();
1382         } else if (!strcasecmp(action, "validate")) {
1383                 validate();
1384         } else if (!strcasecmp(action, "display_editpic")) {
1385                 display_graphics_upload(_("your photo"),
1386                                         "UIMG 0|_userpic_",
1387                                         "editpic");
1388         } else if (!strcasecmp(action, "editpic")) {
1389                 do_graphics_upload("UIMG 1|_userpic_");
1390         } else if (!strcasecmp(action, "display_editroompic")) {
1391                 display_graphics_upload(_("the icon for this room"),
1392                                         "UIMG 0|_roompic_",
1393                                         "editroompic");
1394         } else if (!strcasecmp(action, "editroompic")) {
1395                 do_graphics_upload("UIMG 1|_roompic_");
1396         } else if (!strcasecmp(action, "delete_floor")) {
1397                 delete_floor();
1398         } else if (!strcasecmp(action, "rename_floor")) {
1399                 rename_floor();
1400         } else if (!strcasecmp(action, "create_floor")) {
1401                 create_floor();
1402         } else if (!strcasecmp(action, "display_editfloorpic")) {
1403                 sprintf(buf, "UIMG 0|_floorpic_|%s",
1404                         bstr("which_floor"));
1405                 display_graphics_upload(_("the icon for this floor"),
1406                                         buf,
1407                                         "editfloorpic");
1408         } else if (!strcasecmp(action, "editfloorpic")) {
1409                 sprintf(buf, "UIMG 1|_floorpic_|%s",
1410                         bstr("which_floor"));
1411                 do_graphics_upload(buf);
1412         } else if (!strcasecmp(action, "display_reg")) {
1413                 display_reg(0);
1414         } else if (!strcasecmp(action, "display_changepw")) {
1415                 display_changepw();
1416         } else if (!strcasecmp(action, "changepw")) {
1417                 changepw();
1418         } else if (!strcasecmp(action, "display_edit_node")) {
1419                 display_edit_node();
1420         } else if (!strcasecmp(action, "edit_node")) {
1421                 edit_node();
1422         } else if (!strcasecmp(action, "display_netconf")) {
1423                 display_netconf();
1424         } else if (!strcasecmp(action, "display_confirm_delete_node")) {
1425                 display_confirm_delete_node();
1426         } else if (!strcasecmp(action, "delete_node")) {
1427                 delete_node();
1428         } else if (!strcasecmp(action, "display_add_node")) {
1429                 display_add_node();
1430         } else if (!strcasecmp(action, "add_node")) {
1431                 add_node();
1432         } else if (!strcasecmp(action, "terminate_session")) {
1433                 slrp_highest();
1434                 terminate_session();
1435         } else if (!strcasecmp(action, "edit_me")) {
1436                 edit_me();
1437         } else if (!strcasecmp(action, "display_siteconfig")) {
1438                 display_siteconfig();
1439         } else if (!strcasecmp(action, "chat_recv")) {
1440                 chat_recv();
1441         } else if (!strcasecmp(action, "chat_send")) {
1442                 chat_send();
1443         } else if (!strcasecmp(action, "siteconfig")) {
1444                 siteconfig();
1445         } else if (!strcasecmp(action, "display_generic")) {
1446                 display_generic();
1447         } else if (!strcasecmp(action, "do_generic")) {
1448                 do_generic();
1449         } else if (!strcasecmp(action, "ajax_servcmd")) {
1450                 ajax_servcmd();
1451         } else if (!strcasecmp(action, "display_menubar")) {
1452                 display_menubar(1);
1453         } else if (!strcasecmp(action, "mimepart")) {
1454                 mimepart(arg1, arg2);
1455         } else if (!strcasecmp(action, "edit_vcard")) {
1456                 edit_vcard();
1457         } else if (!strcasecmp(action, "submit_vcard")) {
1458                 submit_vcard();
1459         } else if (!strcasecmp(action, "select_user_to_edit")) {
1460                 select_user_to_edit(NULL, NULL);
1461         } else if (!strcasecmp(action, "display_edituser")) {
1462                 display_edituser(NULL, 0);
1463         } else if (!strcasecmp(action, "edituser")) {
1464                 edituser();
1465         } else if (!strcasecmp(action, "create_user")) {
1466                 create_user();
1467         } else if (!strcasecmp(action, "changeview")) {
1468                 change_view();
1469         } else if (!strcasecmp(action, "change_start_page")) {
1470                 change_start_page();
1471         } else if (!strcasecmp(action, "display_floorconfig")) {
1472                 display_floorconfig(NULL);
1473         } else if (!strcasecmp(action, "toggle_self_service")) {
1474                 toggle_self_service();
1475 #ifdef WEBCIT_WITH_CALENDAR_SERVICE
1476         } else if (!strcasecmp(action, "display_edit_task")) {
1477                 display_edit_task();
1478         } else if (!strcasecmp(action, "save_task")) {
1479                 save_task();
1480         } else if (!strcasecmp(action, "display_edit_event")) {
1481                 display_edit_event();
1482         } else if (!strcasecmp(action, "save_event")) {
1483                 save_event();
1484         } else if (!strcasecmp(action, "respond_to_request")) {
1485                 respond_to_request();
1486         } else if (!strcasecmp(action, "handle_rsvp")) {
1487                 handle_rsvp();
1488 #endif
1489         } else if (!strcasecmp(action, "summary")) {
1490                 summary();
1491         } else if (!strcasecmp(action, "summary_inner_div")) {
1492                 begin_ajax_response();
1493                 summary_inner_div();
1494                 end_ajax_response();
1495         } else if (!strcasecmp(action, "display_customize_iconbar")) {
1496                 display_customize_iconbar();
1497         } else if (!strcasecmp(action, "commit_iconbar")) {
1498                 commit_iconbar();
1499         } else if (!strcasecmp(action, "set_room_policy")) {
1500                 set_room_policy();
1501         } else if (!strcasecmp(action, "display_inetconf")) {
1502                 display_inetconf();
1503         } else if (!strcasecmp(action, "save_inetconf")) {
1504                 save_inetconf();
1505         } else if (!strcasecmp(action, "setup_wizard")) {
1506                 do_setup_wizard();
1507         } else if (!strcasecmp(action, "display_preferences")) {
1508                 display_preferences();
1509         } else if (!strcasecmp(action, "set_preferences")) {
1510                 set_preferences();
1511         } else if (!strcasecmp(action, "recp_autocomplete")) {
1512                 recp_autocomplete(bstr("recp"));
1513         } else if (!strcasecmp(action, "cc_autocomplete")) {
1514                 recp_autocomplete(bstr("cc"));
1515         } else if (!strcasecmp(action, "bcc_autocomplete")) {
1516                 recp_autocomplete(bstr("bcc"));
1517         } else if (!strcasecmp(action, "set_floordiv_expanded")) {
1518                 set_floordiv_expanded(arg1);
1519         } else if (!strcasecmp(action, "diagnostics")) {
1520                 output_headers(1, 1, 1, 0, 0, 0);
1521                 wprintf("Session: %d<hr />\n", WC->wc_session);
1522                 wprintf("Command: <br /><PRE>\n");
1523                 escputs(cmd);
1524                 wprintf("</PRE><hr />\n");
1525                 wprintf("Variables: <br /><PRE>\n");
1526                 dump_vars();
1527                 wprintf("</PRE><hr />\n");
1528                 wDumpContent(1);
1529         }
1530
1531         /* When all else fais, display the main menu. */
1532         else {
1533                 display_main_menu();
1534         }
1535
1536 SKIP_ALL_THIS_CRAP:
1537         fflush(stdout);
1538         if (content != NULL) {
1539                 free(content);
1540                 content = NULL;
1541         }
1542         free_urls();
1543         if (WC->upload_length > 0) {
1544                 free(WC->upload);
1545                 WC->upload_length = 0;
1546         }
1547 }