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
  15 #include <stdio.h>
  16 #include <stdarg.h>
  17
  18 /**
  19  * String to unset the cookie.
  20  * Any date "in the past" will work, so I chose my birthday, right down to
  21  * the exact minute.  :)
  22  */
  23 static char *unset = "; expires=28-May-1971 18:10:00 GMT";
  24
  25 /**
  26  * \brief remove escaped strings from i.e. the url string (like %20 for blanks)
  27  * \param buf the buffer to examine
  28  */
  29 void unescape_input(char *buf)
  30 {
  31         int a, b;
  32         char hex[3];
  33         long buflen;
  34
  35         buflen = strlen(buf);
  36
  37         while ((buflen > 0) && (isspace(buf[buflen - 1]))){
  38                 buf[buflen - 1] = 0;
  39                 buflen --;
  40         }
  41
  42         for (a = 0; a < buflen; ++a) {
  43                 if (buf[a] == '+')
  44                         buf[a] = ' ';
  45                 if (buf[a] == '%') {
  46                         hex[0] = buf[a + 1];
  47                         hex[1] = buf[a + 2];
  48                         hex[2] = 0;
  49                         b = 0;
  50                         sscanf(hex, "%02x", &b);
  51                         buf[a] = (char) b;
  52                         memmove(&buf[a + 1], &buf[a + 3], buflen - a - 2);
  53
  54                         buflen -=2;
  55                 }
  56         }
  57
  58 }
  59
  60 /**
  61  * \brief Extract variables from the URL.
  62  * \param url URL supplied by the HTTP parser
  63  */
  64 void addurls(char *url)
  65 {
  66         char *up, *ptr;
  67         char buf[SIZ];
  68         int a, b, len;
  69         struct urlcontent *u;
  70
  71         up = url;
  72         while (!IsEmptyStr(up)) {
  73
  74                 /** locate the = sign */
  75                 safestrncpy(buf, up, sizeof buf);
  76                 b = (-1);
  77                 for (a = 255; a >= 0; --a)
  78                         if (buf[a] == '=')
  79                                 b = a;
  80                 if (b < 0)
  81                         return;
  82                 buf[b] = 0;
  83
  84                 u = (struct urlcontent *) malloc(sizeof(struct urlcontent));
  85                 u->next = WC->urlstrings;
  86                 WC->urlstrings = u;
  87                 safestrncpy(u->url_key, buf, sizeof u->url_key);
  88
  89                 /** now chop that part off */
  90                 for (a = 0; a <= b; ++a)
  91                         ++up;
  92
  93                 /** locate "&" and "?" delimiters */
  94                 ptr = up;
  95                 len = b = strlen(up);
  96                 for (a = 0; a < len; ++a) {
  97                         if ( (ptr[0] == '&') || (ptr[0] == '?') ) {
  98                                 b = a;
  99                                 break;
 100                         }
 101                         ++ptr;
 102                 }
 103                 ptr = up + b;
 104                 *ptr = '\0';
 105
 106                 len = b;
 107                 u->url_data = malloc(len + 2);
 108                 safestrncpy(u->url_data, up, b + 1);
 109                 u->url_data[b] = 0;
 110                 unescape_input(u->url_data);
 111                 up = ptr;
 112                 ++up;
 113
 114                 /* lprintf(9, "%s = %s\n", u->url_key, u->url_data); */
 115         }
 116 }
 117
 118 /**
 119  * \brief free urlstring memory
 120  */
 121 void free_urls(void)
 122 {
 123         struct urlcontent *u;
 124
 125         while (WC->urlstrings != NULL) {
 126                 free(WC->urlstrings->url_data);
 127                 u = WC->urlstrings->next;
 128                 free(WC->urlstrings);
 129                 WC->urlstrings = u;
 130         }
 131 }
 132
 133 /**
 134  * \brief Diagnostic function to display the contents of all variables
 135  */
 136 void dump_vars(void)
 137 {
 138         struct urlcontent *u;
 139
 140         for (u = WC->urlstrings; u != NULL; u = u->next) {
 141                 wprintf("%38s = %s\n", u->url_key, u->url_data);
 142         }
 143 }
 144
 145 /**
 146  * \brief Return the value of a variable supplied to the current web page (from the url or a form)
 147  * \param key The name of the variable we want
 148  */
 149 char *bstr(char *key)
 150 {
 151         struct urlcontent *u;
 152
 153         for (u = WC->urlstrings; u != NULL; u = u->next) {
 154                 if (!strcasecmp(u->url_key, key))
 155                         return (u->url_data);
 156         }
 157         return ("");
 158 }
 159
 160 /**
 161  * \brief web-printing funcion. uses our vsnprintf wrapper
 162  * \param format printf format string
 163  * \param ... the varargs to put into formatstring
 164  */
 165 void wprintf(const char *format,...)
 166 {
 167         va_list arg_ptr;
 168         char wbuf[4096];
 169
 170         va_start(arg_ptr, format);
 171         vsnprintf(wbuf, sizeof wbuf, format, arg_ptr);
 172         va_end(arg_ptr);
 173
 174         client_write(wbuf, strlen(wbuf));
 175 }
 176
 177
 178 /**
 179  * \brief wrap up an HTTP session, closes tags, etc.
 180  * \todo multiline params?
 181  * \param print_standard_html_footer should be set to 0 to transmit only, 1 to
 182  * append the main menu and closing tags, or 2 to
 183  * append the closing tags only.
 184  */
 185 void wDumpContent(int print_standard_html_footer)
 186 {
 187         if (print_standard_html_footer) {
 188                 wprintf("</div>\n");    /* end of "text" div */
 189                 do_template("trailing");
 190         }
 191
 192         /* If we've been saving it all up for one big output burst,
 193          * go ahead and do that now.
 194          */
 195         end_burst();
 196 }
 197
 198
 199 /**
 200  * \brief Copy a string, escaping characters which have meaning in HTML.
 201  * \param target target buffer
 202  * \param strbuf source buffer
 203  * \param nbsp If nonzero, spaces are converted to non-breaking spaces.
 204  * \param nolinebreaks if set, linebreaks are removed from the string.
 205  */
 206 long stresc(char *target, long tSize, char *strbuf, int nbsp, int nolinebreaks)
 207 {
 208         char *aptr, *bptr, *eptr;
 209
 210         *target = '\0';
 211         aptr = strbuf;
 212         bptr = target;
 213         eptr = target + tSize - 6; // our biggest unit to put in...
 214
 215         while ((bptr < eptr) && !IsEmptyStr(aptr) ){
 216                 if (*aptr == '<') {
 217                         memcpy(bptr, "&lt;", 4);
 218                         bptr += 4;
 219                 }
 220                 else if (*aptr == '>') {
 221                         memcpy(bptr, "&gt;", 4);
 222                         bptr += 4;
 223                 }
 224                 else if (*aptr == '&') {
 225                         memcpy(bptr, "&amp;", 5);
 226                         bptr += 5;
 227                 }
 228                 else if (*aptr == '\"') {
 229                         memcpy(bptr, "&quot;", 6);
 230                         bptr += 6;
 231                 }
 232                 else if (*aptr == '\'') {
 233                         memcpy(bptr, "&#39;", 5);
 234                         bptr += 5;
 235                 }
 236                 else if (*aptr == LB) {
 237                         *bptr = '<';
 238                         bptr ++;
 239                 }
 240                 else if (*aptr == RB) {
 241                         *bptr = '>';
 242                         bptr ++;
 243                 }
 244                 else if (*aptr == QU) {
 245                         *bptr ='"';
 246                         bptr ++;
 247                 }
 248                 else if ((*aptr == 32) && (nbsp == 1)) {
 249                         memcpy(bptr, "&nbsp;", 6);
 250                         bptr += 6;
 251                 }
 252                 else if ((*aptr == '\n') && (nolinebreaks)) {
 253                         *bptr='\0';     /* nothing */
 254                 }
 255                 else if ((*aptr == '\r') && (nolinebreaks)) {
 256                         *bptr='\0';     /* nothing */
 257                 }
 258                 else{
 259                         *bptr = *aptr;
 260                         bptr++;
 261                 }
 262                 aptr ++;
 263         }
 264         *bptr = '\0';
 265         if ((bptr = eptr - 1 ) && !IsEmptyStr(aptr) )
 266                 return -1;
 267         return (bptr - target);
 268 }
 269
 270 /**
 271  * \brief WHAT???
 272  * \param strbuf what???
 273  * \param nbsp If nonzero, spaces are converted to non-breaking spaces.
 274  * \param nolinebreaks if set, linebreaks are removed from the string.
 275  */
 276 void escputs1(char *strbuf, int nbsp, int nolinebreaks)
 277 {
 278         char *buf;
 279         long Siz;
 280
 281         if (strbuf == NULL) return;
 282         Siz = (3 * strlen(strbuf)) + SIZ ;
 283         buf = malloc(Siz);
 284         stresc(buf, Siz, strbuf, nbsp, nolinebreaks);
 285         wprintf("%s", buf);
 286         free(buf);
 287 }
 288
 289 /**
 290  * \brief static wrapper for ecsputs1
 291  * \param strbuf buffer to print escaped to client
 292  */
 293 void escputs(char *strbuf)
 294 {
 295         escputs1(strbuf, 0, 0);
 296 }
 297
 298 /**
 299  * \brief Escape a string for feeding out as a URL.
 300  * \param outbuf the output buffer
 301  * \param strbuf the input buffer
 302  */
 303 void urlesc(char *outbuf, char *strbuf)
 304 {
 305         int a, b, c, len, eclen, olen;
 306         char *ec = " +#&;`'|*?-~<>^()[]{}/$\"\\";
 307
 308         strcpy(outbuf, "");
 309         len = strlen(strbuf);
 310         eclen = strlen(ec);
 311         olen = 0;
 312         for (a = 0; a < len; ++a) {
 313                 c = 0;
 314                 for (b = 0; b < eclen; ++b) {
 315                         if (strbuf[a] == ec[b])
 316                                 c = 1;
 317                 }
 318                 if (c == 1) {
 319                         sprintf(&outbuf[olen], "%%%02x", strbuf[a]);
 320                         olen += 3;
 321                 }
 322                 else
 323                         outbuf[olen ++] = strbuf[a];
 324         }
 325         outbuf[olen] = '\0';
 326 }
 327
 328 /**
 329  * \brief urlescape buffer and print it to the client
 330  * \param strbuf buffer to urlescape
 331  */
 332 void urlescputs(char *strbuf)
 333 {
 334         char outbuf[SIZ];
 335
 336         urlesc(outbuf, strbuf);
 337         wprintf("%s", outbuf);
 338 }
 339
 340
 341 /**
 342  * \brief Copy a string, escaping characters for JavaScript strings.
 343  * \param target output string
 344  * \param strbuf input string
 345  */
 346 void jsesc(char *target, size_t tlen, char *strbuf)
 347 {
 348         int len;
 349         char *tend;
 350         char *send;
 351         char *tptr;
 352         char *sptr;
 353
 354         target[0]='\0';
 355         len = strlen (strbuf);
 356         send = strbuf + len;
 357         sptr = strbuf;
 358         tptr = target;
 359
 360         while (!IsEmptyStr(sptr) &&
 361                (sptr < send) &&
 362                (tptr < tend)) {
 363
 364                 if (*sptr == '<')
 365                         *tptr = '[';
 366                 else if (*sptr == '>')
 367                         *tptr = ']';
 368                 else if (*sptr == '\'') {
 369                         if (tend - tptr < 3)
 370                                 return;
 371                         *(tptr++) = '\\';
 372                         *tptr = '\'';
 373                 }
 374                 else if (*sptr == '"') {
 375                         if (tend - tptr < 8)
 376                                 return;
 377                         *(tptr++) = '&';
 378                         *(tptr++) = 'q';
 379                         *(tptr++) = 'u';
 380                         *(tptr++) = 'o';
 381                         *(tptr++) = 't';
 382                         *tptr = ';';
 383                 }
 384                 else if (*sptr == '&') {
 385                         if (tend - tptr < 7)
 386                                 return;
 387                         *(tptr++) = '&';
 388                         *(tptr++) = 'a';
 389                         *(tptr++) = 'm';
 390                         *(tptr++) = 'p';
 391                         *tptr = ';';
 392                 } else {
 393                         *tptr = *sptr;
 394                 }
 395                 tptr++; sptr++;
 396         }
 397         *tptr = '\0';
 398 }
 399
 400 /**
 401  * \brief escape and print java script
 402  * \param strbuf the js code
 403  */
 404 void jsescputs(char *strbuf)
 405 {
 406         char outbuf[SIZ];
 407
 408         jsesc(outbuf, SIZ, strbuf);
 409         wprintf("%s", outbuf);
 410 }
 411
 412 /**
 413  * \brief Copy a string, escaping characters for message text hold
 414  * \param target target buffer
 415  * \param strbuf source buffer
 416  */
 417 void msgesc(char *target, char *strbuf)
 418 {
 419         int a, len;
 420
 421         *target='\0';
 422         len = strlen(strbuf);
 423         for (a = 0; a < len; ++a) {
 424                 if (strbuf[a] == '\n')
 425                         strcat(target, " ");
 426                 else if (strbuf[a] == '\r')
 427                         strcat(target, " ");
 428                 else if (strbuf[a] == '\'')
 429                         strcat(target, "&#39;");
 430                 else {
 431                         strncat(target, &strbuf[a], 1);
 432                 }
 433         }
 434 }
 435
 436 /**
 437  * \brief print a string to the client after cleaning it with msgesc() and stresc()
 438  * \param strbuf string to be printed
 439  */
 440 void msgescputs1( char *strbuf)
 441 {
 442         char *outbuf;
 443         char *outbuf2;
 444         int buflen;
 445
 446         if (strbuf == NULL) return;
 447         buflen = 3 * strlen(strbuf) + SIZ;
 448         outbuf = malloc( buflen);
 449         outbuf2 = malloc( buflen);
 450         msgesc(outbuf, strbuf);
 451         stresc(outbuf2, buflen, outbuf, 0, 0);
 452         wprintf("%s", outbuf2);
 453         free(outbuf);
 454         free(outbuf2);
 455 }
 456
 457 /**
 458  * \brief print a string to the client after cleaning it with msgesc()
 459  * \param strbuf string to be printed
 460  */
 461 void msgescputs(char *strbuf) {
 462         char *outbuf;
 463
 464         if (strbuf == NULL) return;
 465         outbuf = malloc( (3 * strlen(strbuf)) + SIZ);
 466         msgesc(outbuf, strbuf);
 467         wprintf("%s", outbuf);
 468         free(outbuf);
 469 }
 470
 471
 472
 473
 474 /**
 475  * \brief Output all that important stuff that the browser will want to see
 476  */
 477 void output_headers(    int do_httpheaders,     /**< 1 = output HTTP headers                          */
 478                         int do_htmlhead,        /**< 1 = output HTML <head> section and <body> opener */
 479
 480                         int do_room_banner,     /**< 0=no, 1=yes,
 481                                                                  * 2 = I'm going to embed my own, so don't open the
 482                                                                  *     <div id="content"> either.
 483                                                                  */
 484
 485                         int unset_cookies,      /**< 1 = session is terminating, so unset the cookies */
 486                         int suppress_check,     /**< 1 = suppress check for instant messages          */
 487                         int cache               /**< 1 = allow browser to cache this page             */
 488 ) {
 489         char cookie[1024];
 490         char httpnow[128];
 491
 492         wprintf("HTTP/1.1 200 OK\n");
 493         http_datestring(httpnow, sizeof httpnow, time(NULL));
 494
 495         if (do_httpheaders) {
 496                 wprintf("Content-type: text/html; charset=utf-8\r\n"
 497                         "Server: %s / %s\n"
 498                         "Connection: close\r\n",
 499                         PACKAGE_STRING, serv_info.serv_software
 500                 );
 501         }
 502
 503         if (cache) {
 504                 wprintf("Pragma: public\r\n"
 505                         "Cache-Control: max-age=3600, must-revalidate\r\n"
 506                         "Last-modified: %s\r\n",
 507                         httpnow
 508                 );
 509         }
 510         else {
 511                 wprintf("Pragma: no-cache\r\n"
 512                         "Cache-Control: no-store\r\n"
 513                         "Expires: -1\r\n"
 514                 );
 515         }
 516
 517         stuff_to_cookie(cookie, WC->wc_session, WC->wc_username,
 518                         WC->wc_password, WC->wc_roomname);
 519
 520         if (unset_cookies) {
 521                 wprintf("Set-cookie: webcit=%s; path=/\r\n", unset);
 522         } else {
 523                 wprintf("Set-cookie: webcit=%s; path=/\r\n", cookie);
 524                 if (server_cookie != NULL) {
 525                         wprintf("%s\n", server_cookie);
 526                 }
 527         }
 528
 529         if (do_htmlhead) {
 530                 begin_burst();
 531                 if (!access("static.local/webcit.css", R_OK)) {
 532                         svprintf("CSSLOCAL", WCS_STRING,
 533                            "<link href=\"static.local/webcit.css\" rel=\"stylesheet\" type=\"text/css\">"
 534                         );
 535                 }
 536                 do_template("head");
 537         }
 538
 539         /** ICONBAR */
 540         if (do_htmlhead) {
 541
 542
 543                 /** check for ImportantMessages (these display in a div overlaying the main screen) */
 544                 if (!IsEmptyStr(WC->ImportantMessage)) {
 545                         wprintf("<div id=\"important_message\">\n");
 546                         wprintf("<span class=\"imsg\">"
 547                                 "%s</span><br />\n", WC->ImportantMessage);
 548                         wprintf("</div>\n");
 549                         wprintf("<script type=\"text/javascript\">\n"
 550                                 "        setTimeout('hide_imsg_popup()', 3000); \n"
 551                                 "</script>\n");
 552                         safestrncpy(WC->ImportantMessage, "", sizeof WC->ImportantMessage);
 553                 }
 554
 555                 if ( (WC->logged_in) && (!unset_cookies) ) {
 556                         wprintf("<div id=\"iconbar\">");
 557                         do_selected_iconbar();
 558                         /** check for instant messages (these display in a new window) */
 559                         page_popup();
 560                         wprintf("</div>");
 561                 }
 562
 563                 if (do_room_banner == 1) {
 564                         wprintf("<div id=\"banner\">\n");
 565                         embed_room_banner(NULL, navbar_default);
 566                         wprintf("</div>\n");
 567                 }
 568         }
 569
 570         if (do_room_banner == 1) {
 571                 wprintf("<div id=\"content\">\n");
 572         }
 573 }
 574
 575
 576 /**
 577  * \brief Generic function to do an HTTP redirect.  Easy and fun.
 578  * \param whichpage target url to 302 to
 579  */
 580 void http_redirect(char *whichpage) {
 581         wprintf("HTTP/1.1 302 Moved Temporarily\n");
 582         wprintf("Location: %s\r\n", whichpage);
 583         wprintf("URI: %s\r\n", whichpage);
 584         wprintf("Content-type: text/html; charset=utf-8\r\n\r\n");
 585         wprintf("<html><body>");
 586         wprintf("Go <a href=\"%s\">here</A>.", whichpage);
 587         wprintf("</body></html>\n");
 588 }
 589
 590
 591
 592 /**
 593  * \brief Output a piece of content to the web browser
 594  */
 595 void http_transmit_thing(char *thing, size_t length, char *content_type,
 596                          int is_static) {
 597
 598         output_headers(0, 0, 0, 0, 0, is_static);
 599
 600         wprintf("Content-type: %s\r\n"
 601                 "Server: %s\r\n"
 602                 "Connection: close\r\n",
 603                 content_type,
 604                 PACKAGE_STRING);
 605
 606 #ifdef HAVE_ZLIB
 607         /** If we can send the data out compressed, please do so. */
 608         if (WC->gzip_ok) {
 609                 char *compressed_data = NULL;
 610                 size_t compressed_len;
 611
 612                 compressed_len =  ((length * 101) / 100) + 100;
 613                 compressed_data = malloc(compressed_len);
 614
 615                 if (compress_gzip((Bytef *) compressed_data,
 616                                   &compressed_len,
 617                                   (Bytef *) thing,
 618                                   (uLongf) length, Z_BEST_SPEED) == Z_OK) {
 619                         wprintf("Content-encoding: gzip\r\n"
 620                                 "Content-length: %ld\r\n"
 621                                 "\r\n",
 622                                 (long) compressed_len
 623                         );
 624                         client_write(compressed_data, (size_t)compressed_len);
 625                         free(compressed_data);
 626                         return;
 627                 }
 628         }
 629 #endif
 630
 631         /** No compression ... just send it out as-is */
 632         wprintf("Content-length: %ld\r\n"
 633                 "\r\n",
 634                 (long) length
 635         );
 636         client_write(thing, (size_t)length);
 637 }
 638
 639 /**
 640  * \brief print menu box like used in the floor view or admin interface.
 641  * This function takes pair of strings as va_args,
 642  * \param Title Title string of the box
 643  * \param Class CSS Class for the box
 644  * \param nLines How many string pairs should we print? (URL, UrlText)
 645  * \param ... Pairs of URL Strings and their Names
 646  */
 647 void print_menu_box(char* Title, char *Class, int nLines, ...)
 648 {
 649         va_list arg_list;
 650         long i;
 651
 652         svprintf("BOXTITLE", WCS_STRING, Title);
 653         do_template("beginbox");
 654
 655         wprintf("<ul class=\"%s\">", Class);
 656
 657         va_start(arg_list, nLines);
 658         for (i = 0; i < nLines; ++i)
 659         {
 660                 wprintf("<li><a href=\"%s\">", va_arg(arg_list, char *));
 661                 wprintf((char *) va_arg(arg_list, char *));
 662                 wprintf("</a></li>\n");
 663         }
 664         va_end (arg_list);
 665
 666         wprintf("</a></li>\n");
 667
 668         wprintf("</ul>");
 669
 670         do_template("endbox");
 671 }
 672
 673
 674 /**
 675  * \brief dump out static pages from disk
 676  * \param what the file urs to print
 677  */
 678 void output_static(char *what)
 679 {
 680         FILE *fp;
 681         struct stat statbuf;
 682         off_t bytes;
 683         char *bigbuffer;
 684         char content_type[128];
 685         int len;
 686
 687         fp = fopen(what, "rb");
 688         if (fp == NULL) {
 689                 lprintf(9, "output_static('%s')  -- NOT FOUND --\n", what);
 690                 wprintf("HTTP/1.1 404 %s\n", strerror(errno));
 691                 wprintf("Content-Type: text/plain\r\n");
 692                 wprintf("\r\n");
 693                 wprintf("Cannot open %s: %s\n", what, strerror(errno));
 694         } else {
 695                 len = strlen (what);
 696                 if (!strncasecmp(&what[len - 4], ".gif", 4))
 697                         safestrncpy(content_type, "image/gif", sizeof content_type);
 698                 else if (!strncasecmp(&what[len - 4], ".txt", 4))
 699                         safestrncpy(content_type, "text/plain", sizeof content_type);
 700                 else if (!strncasecmp(&what[len - 4], ".css", 4))
 701                         safestrncpy(content_type, "text/css", sizeof content_type);
 702                 else if (!strncasecmp(&what[len - 4], ".jpg", 4))
 703                         safestrncpy(content_type, "image/jpeg", sizeof content_type);
 704                 else if (!strncasecmp(&what[len - 4], ".png", 4))
 705                         safestrncpy(content_type, "image/png", sizeof content_type);
 706                 else if (!strncasecmp(&what[len - 4], ".ico", 4))
 707                         safestrncpy(content_type, "image/x-icon", sizeof content_type);
 708                 else if (!strncasecmp(&what[len - 5], ".html", 5))
 709                         safestrncpy(content_type, "text/html", sizeof content_type);
 710                 else if (!strncasecmp(&what[len - 4], ".htm", 4))
 711                         safestrncpy(content_type, "text/html", sizeof content_type);
 712                 else if (!strncasecmp(&what[len - 4], ".wml", 4))
 713                         safestrncpy(content_type, "text/vnd.wap.wml", sizeof content_type);
 714                 else if (!strncasecmp(&what[len - 5], ".wmls", 5))
 715                         safestrncpy(content_type, "text/vnd.wap.wmlscript", sizeof content_type);
 716                 else if (!strncasecmp(&what[len - 5], ".wmlc", 5))
 717                         safestrncpy(content_type, "application/vnd.wap.wmlc", sizeof content_type);
 718                 else if (!strncasecmp(&what[len - 6], ".wmlsc", 6))
 719                         safestrncpy(content_type, "application/vnd.wap.wmlscriptc", sizeof content_type);
 720                 else if (!strncasecmp(&what[len - 5], ".wbmp", 5))
 721                         safestrncpy(content_type, "image/vnd.wap.wbmp", sizeof content_type);
 722                 else if (!strncasecmp(&what[len - 3], ".js", 3))
 723                         safestrncpy(content_type, "text/javascript", sizeof content_type);
 724                 else
 725                         safestrncpy(content_type, "application/octet-stream", sizeof content_type);
 726
 727                 fstat(fileno(fp), &statbuf);
 728                 bytes = statbuf.st_size;
 729                 bigbuffer = malloc(bytes + 2);
 730                 fread(bigbuffer, bytes, 1, fp);
 731                 fclose(fp);
 732
 733                 lprintf(9, "output_static('%s')  %s\n", what, content_type);
 734                 http_transmit_thing(bigbuffer, (size_t)bytes, content_type, 1);
 735                 free(bigbuffer);
 736         }
 737         if (!strcasecmp(bstr("force_close_session"), "yes")) {
 738                 end_webcit_session();
 739         }
 740 }
 741
 742
 743 /**
 744  * \brief When the browser requests an image file from the Citadel server,
 745  * this function is called to transmit it.
 746  */
 747 void output_image()
 748 {
 749         char buf[SIZ];
 750         char *xferbuf = NULL;
 751         off_t bytes;
 752
 753         serv_printf("OIMG %s|%s", bstr("name"), bstr("parm"));
 754         serv_getln(buf, sizeof buf);
 755         if (buf[0] == '2') {
 756                 bytes = extract_long(&buf[4], 0);
 757                 xferbuf = malloc(bytes + 2);
 758
 759                 /** Read it from the server */
 760                 read_server_binary(xferbuf, bytes);
 761                 serv_puts("CLOS");
 762                 serv_getln(buf, sizeof buf);
 763
 764                 /** Write it to the browser */
 765                 http_transmit_thing(xferbuf, (size_t)bytes, "image/gif", 0);
 766                 free(xferbuf);
 767
 768         } else {
 769                 /**
 770                  * Instead of an ugly 404, send a 1x1 transparent GIF
 771                  * when there's no such image on the server.
 772                  */
 773                 char blank_gif[SIZ];
 774                 snprintf (blank_gif, SIZ, "%s%s", static_dirs[0], "/blank.gif");
 775                 output_static(blank_gif);
 776         }
 777
 778
 779
 780 }
 781
 782 /**
 783  * \brief Generic function to output an arbitrary MIME part from an arbitrary
 784  *        message number on the server.
 785  *
 786  * \param msgnum                Number of the item on the citadel server
 787  * \param partnum               The MIME part to be output
 788  * \param force_download        Nonzero to force set the Content-Type: header
 789  *                              to "application/octet-stream"
 790  */
 791 void mimepart(char *msgnum, char *partnum, int force_download)
 792 {
 793         char buf[256];
 794         off_t bytes;
 795         char content_type[256];
 796         char *content = NULL;
 797
 798         serv_printf("OPNA %s|%s", msgnum, partnum);
 799         serv_getln(buf, sizeof buf);
 800         if (buf[0] == '2') {
 801                 bytes = extract_long(&buf[4], 0);
 802                 content = malloc(bytes + 2);
 803                 if (force_download) {
 804                         strcpy(content_type, "application/octet-stream");
 805                 }
 806                 else {
 807                         extract_token(content_type, &buf[4], 3, '|', sizeof content_type);
 808                 }
 809                 output_headers(0, 0, 0, 0, 0, 0);
 810                 read_server_binary(content, bytes);
 811                 serv_puts("CLOS");
 812                 serv_getln(buf, sizeof buf);
 813                 http_transmit_thing(content, bytes, content_type, 0);
 814                 free(content);
 815         } else {
 816                 wprintf("HTTP/1.1 404 %s\n", &buf[4]);
 817                 output_headers(0, 0, 0, 0, 0, 0);
 818                 wprintf("Content-Type: text/plain\r\n");
 819                 wprintf("\r\n");
 820                 wprintf(_("An error occurred while retrieving this part: %s\n"), &buf[4]);
 821         }
 822
 823 }
 824
 825
 826 /**
 827  * \brief Read any MIME part of a message, from the server, into memory.
 828  * \param msgnum number of the message on the citadel server
 829  * \param partnum the MIME part to be loaded
 830  */
 831 char *load_mimepart(long msgnum, char *partnum)
 832 {
 833         char buf[SIZ];
 834         off_t bytes;
 835         char content_type[SIZ];
 836         char *content;
 837
 838         serv_printf("DLAT %ld|%s", msgnum, partnum);
 839         serv_getln(buf, sizeof buf);
 840         if (buf[0] == '6') {
 841                 bytes = extract_long(&buf[4], 0);
 842                 extract_token(content_type, &buf[4], 3, '|', sizeof content_type);
 843
 844                 content = malloc(bytes + 2);
 845                 serv_read(content, bytes);
 846
 847                 content[bytes] = 0;     /* null terminate for good measure */
 848                 return(content);
 849         }
 850         else {
 851                 return(NULL);
 852         }
 853
 854 }
 855
 856
 857 /**
 858  * \brief Convenience functions to display a page containing only a string
 859  * \param titlebarcolor color of the titlebar of the frame
 860  * \param titlebarmsg text to display in the title bar
 861  * \param messagetext body of the box
 862  */
 863 void convenience_page(char *titlebarcolor, char *titlebarmsg, char *messagetext)
 864 {
 865         wprintf("HTTP/1.1 200 OK\n");
 866         output_headers(1, 1, 2, 0, 0, 0);
 867         wprintf("<div id=\"banner\">\n");
 868         wprintf("<table width=100%% border=0 bgcolor=\"#%s\"><tr><td>", titlebarcolor);
 869         wprintf("<span class=\"titlebar\">%s</span>\n", titlebarmsg);
 870         wprintf("</td></tr></table>\n");
 871         wprintf("</div>\n<div id=\"content\">\n");
 872         escputs(messagetext);
 873
 874         wprintf("<hr />\n");
 875         wDumpContent(1);
 876 }
 877
 878
 879 /**
 880  * \brief Display a blank page.
 881  */
 882 void blank_page(void) {
 883         output_headers(1, 1, 0, 0, 0, 0);
 884         wDumpContent(2);
 885 }
 886
 887
 888 /**
 889  * \brief A template has been requested
 890  */
 891 void url_do_template(void) {
 892         do_template(bstr("template"));
 893 }
 894
 895
 896
 897 /**
 898  * \brief Offer to make any page the user's "start page."
 899  */
 900 void offer_start_page(void) {
 901         wprintf("<a href=\"change_start_page?startpage=");
 902         urlescputs(WC->this_page);
 903         wprintf("\">");
 904         wprintf(_("Make this my start page"));
 905         wprintf("</a>");
 906 /*
 907         wprintf("<br/><a href=\"rss?room=");
 908         urlescputs(WC->wc_roomname);
 909         wprintf("\" title=\"RSS 2.0 feed for ");
 910         escputs(WC->wc_roomname);
 911         wprintf("\"><img alt=\"RSS\" border=\"0\" src=\"static/xml_button.gif\"/></a>\n");
 912 */
 913 }
 914
 915
 916 /**
 917  * \brief Change the user's start page
 918  */
 919 void change_start_page(void) {
 920
 921         if (bstr("startpage") == NULL) {
 922                 safestrncpy(WC->ImportantMessage,
 923                         _("You no longer have a start page selected."),
 924                         sizeof WC->ImportantMessage);
 925                 display_main_menu();
 926                 return;
 927         }
 928
 929         set_preference("startpage", bstr("startpage"), 1);
 930
 931         output_headers(1, 1, 0, 0, 0, 0);
 932         do_template("newstartpage");
 933         wDumpContent(1);
 934 }
 935
 936
 937
 938 /**
 939  * \brief convenience function to indicate success
 940  * \param successmessage the mesage itself
 941  */
 942 void display_success(char *successmessage)
 943 {
 944         convenience_page("007700", "OK", successmessage);
 945 }
 946
 947
 948 /**
 949  * \brief Authorization required page
 950  * This is probably temporary and should be revisited
 951  * \param message message to put in header
 952 */
 953 void authorization_required(const char *message)
 954 {
 955         wprintf("HTTP/1.1 401 Authorization Required\r\n");
 956         wprintf("WWW-Authenticate: Basic realm=\"\"\r\n", serv_info.serv_humannode);
 957         wprintf("Content-Type: text/html\r\n\r\n");
 958         wprintf("<h1>");
 959         wprintf(_("Authorization Required"));
 960         wprintf("</h1>\r\n");
 961         wprintf(_("The resource you requested requires a valid username and password. "
 962                 "You could not be logged in: %s\n"), message);
 963         wDumpContent(0);
 964 }
 965
 966 /**
 967  * \brief This function is called by the MIME parser to handle data uploaded by
 968  *        the browser.  Form data, uploaded files, and the data from HTTP PUT
 969  *        operations (such as those found in GroupDAV) all arrive this way.
 970  *
 971  * \param name Name of the item being uploaded
 972  * \param filename Filename of the item being uploaded
 973  * \param partnum MIME part identifier (not needed)
 974  * \param disp MIME content disposition (not needed)
 975  * \param content The actual data
 976  * \param cbtype MIME content-type
 977  * \param cbcharset Character set
 978  * \param length Content length
 979  * \param encoding MIME encoding type (not needed)
 980  * \param userdata Not used here
 981  */
 982 void upload_handler(char *name, char *filename, char *partnum, char *disp,
 983                         void *content, char *cbtype, char *cbcharset,
 984                         size_t length, char *encoding, void *userdata)
 985 {
 986         struct urlcontent *u;
 987
 988         lprintf(9, "upload_handler() name=%s, type=%s, len=%d\n", name, cbtype, length);
 989
 990         /* Form fields */
 991         if ( (length > 0) && (IsEmptyStr(cbtype)) ) {
 992                 u = (struct urlcontent *) malloc(sizeof(struct urlcontent));
 993                 u->next = WC->urlstrings;
 994                 WC->urlstrings = u;
 995                 safestrncpy(u->url_key, name, sizeof(u->url_key));
 996                 u->url_data = malloc(length + 1);
 997                 memcpy(u->url_data, content, length);
 998                 u->url_data[length] = 0;
 999                 /* lprintf(9, "Key: <%s>  Data: <%s>\n", u->url_key, u->url_data); */
1000         }
1001
1002         /** Uploaded files */
1003         if ( (length > 0) && (!IsEmptyStr(cbtype)) ) {
1004                 WC->upload = malloc(length);
1005                 if (WC->upload != NULL) {
1006                         WC->upload_length = length;
1007                         safestrncpy(WC->upload_filename, filename,
1008                                         sizeof(WC->upload_filename));
1009                         safestrncpy(WC->upload_content_type, cbtype,
1010                                         sizeof(WC->upload_content_type));
1011                         memcpy(WC->upload, content, length);
1012                 }
1013                 else {
1014                         lprintf(3, "malloc() failed: %s\n", strerror(errno));
1015                 }
1016         }
1017
1018 }
1019
1020 /**
1021  * \brief Convenience functions to wrap around asynchronous ajax responses
1022  */
1023 void begin_ajax_response(void) {
1024         output_headers(0, 0, 0, 0, 0, 0);
1025
1026         wprintf("Content-type: text/html; charset=UTF-8\r\n"
1027                 "Server: %s\r\n"
1028                 "Connection: close\r\n"
1029                 "Pragma: no-cache\r\n"
1030                 "Cache-Control: no-cache\r\n"
1031                 "Expires: -1\r\n"
1032                 ,
1033                 PACKAGE_STRING);
1034         begin_burst();
1035 }
1036
1037 /**
1038  * \brief print ajax response footer
1039  */
1040 void end_ajax_response(void) {
1041         wprintf("\r\n");
1042         wDumpContent(0);
1043 }
1044
1045 /**
1046  * \brief Wraps a Citadel server command in an AJAX transaction.
1047  */
1048 void ajax_servcmd(void)
1049 {
1050         char buf[1024];
1051         char gcontent[1024];
1052         char *junk;
1053         size_t len;
1054
1055         begin_ajax_response();
1056
1057         serv_printf("%s", bstr("g_cmd"));
1058         serv_getln(buf, sizeof buf);
1059         wprintf("%s\n", buf);
1060
1061         if (buf[0] == '8') {
1062                 serv_printf("\n\n000");
1063         }
1064         if ((buf[0] == '1') || (buf[0] == '8')) {
1065                 while (serv_getln(gcontent, sizeof gcontent), strcmp(gcontent, "000")) {
1066                         wprintf("%s\n", gcontent);
1067                 }
1068                 wprintf("000");
1069         }
1070         if (buf[0] == '4') {
1071                 text_to_server(bstr("g_input"));
1072                 serv_puts("000");
1073         }
1074         if (buf[0] == '6') {
1075                 len = atol(&buf[4]);
1076                 junk = malloc(len);
1077                 serv_read(junk, len);
1078                 free(junk);
1079         }
1080         if (buf[0] == '7') {
1081                 len = atol(&buf[4]);
1082                 junk = malloc(len);
1083                 memset(junk, 0, len);
1084                 serv_write(junk, len);
1085                 free(junk);
1086         }
1087
1088         end_ajax_response();
1089
1090         /**
1091          * This is kind of an ugly hack, but this is the only place it can go.
1092          * If the command was GEXP, then the instant messenger window must be
1093          * running, so reset the "last_pager_check" watchdog timer so
1094          * that page_popup() doesn't try to open it a second time.
1095          */
1096         if (!strncasecmp(bstr("g_cmd"), "GEXP", 4)) {
1097                 WC->last_pager_check = time(NULL);
1098         }
1099 }
1100
1101
1102 /**
1103  * \brief Helper function for the asynchronous check to see if we need
1104  * to open the instant messenger window.
1105  */
1106 void seconds_since_last_gexp(void)
1107 {
1108         char buf[256];
1109
1110         begin_ajax_response();
1111         if ( (time(NULL) - WC->last_pager_check) < 30) {
1112                 wprintf("NO\n");
1113         }
1114         else {
1115                 serv_puts("NOOP");
1116                 serv_getln(buf, sizeof buf);
1117                 if (buf[3] == '*') {
1118                         wprintf("YES");
1119                 }
1120                 else {
1121                         wprintf("NO");
1122                 }
1123         }
1124         end_ajax_response();
1125 }
1126
1127
1128
1129
1130 /**
1131  * \brief Entry point for WebCit transaction
1132  */
1133 void session_loop(struct httprequest *req)
1134 {
1135         char cmd[1024];
1136         char action[1024];
1137         char arg[8][128];
1138         size_t sizes[10];
1139         char *index[10];
1140         char buf[SIZ];
1141         char request_method[128];
1142         char pathname[1024];
1143         int a, b, nBackDots, nEmpty;
1144         int ContentLength = 0;
1145         int BytesRead = 0;
1146         char ContentType[512];
1147         char *content = NULL;
1148         char *content_end = NULL;
1149         struct httprequest *hptr;
1150         char browser_host[256];
1151         char user_agent[256];
1152         int body_start = 0;
1153         int is_static = 0;
1154         int n_static = 0;
1155         int len = 0;
1156         /**
1157          * We stuff these with the values coming from the client cookies,
1158          * so we can use them to reconnect a timed out session if we have to.
1159          */
1160         char c_username[SIZ];
1161         char c_password[SIZ];
1162         char c_roomname[SIZ];
1163         char c_httpauth_string[SIZ];
1164         char c_httpauth_user[SIZ];
1165         char c_httpauth_pass[SIZ];
1166         char cookie[SIZ];
1167
1168         safestrncpy(c_username, "", sizeof c_username);
1169         safestrncpy(c_password, "", sizeof c_password);
1170         safestrncpy(c_roomname, "", sizeof c_roomname);
1171         safestrncpy(c_httpauth_string, "", sizeof c_httpauth_string);
1172         safestrncpy(c_httpauth_user, DEFAULT_HTTPAUTH_USER, sizeof c_httpauth_user);
1173         safestrncpy(c_httpauth_pass, DEFAULT_HTTPAUTH_PASS, sizeof c_httpauth_pass);
1174         strcpy(browser_host, "");
1175
1176         WC->upload_length = 0;
1177         WC->upload = NULL;
1178         WC->vars = NULL;
1179         WC->is_wap = 0;
1180
1181         hptr = req;
1182         if (hptr == NULL) return;
1183
1184         safestrncpy(cmd, hptr->line, sizeof cmd);
1185         hptr = hptr->next;
1186         extract_token(request_method, cmd, 0, ' ', sizeof request_method);
1187         extract_token(pathname, cmd, 1, ' ', sizeof pathname);
1188
1189         /** Figure out the action */
1190         index[0] = action;
1191         sizes[0] = sizeof action;
1192         for (a=1; a<9; a++)
1193         {
1194                 index[a] = arg[a-1];
1195                 sizes[a] = sizeof arg[a-1];
1196         }
1197 ////    index[9] = &foo; todo
1198         nBackDots = 0;
1199         nEmpty = 0;
1200         for ( a = 0; a < 9; ++a)
1201         {
1202                 extract_token(index[a], pathname, a + 1, '/', sizes[a]);
1203                 if (strstr(index[a], "?")) *strstr(index[a], "?") = 0;
1204                 if (strstr(index[a], "&")) *strstr(index[a], "&") = 0;
1205                 if (strstr(index[a], " ")) *strstr(index[a], " ") = 0;
1206                 if ((index[a][0] == '.') && (index[a][1] == '.'))
1207                         nBackDots++;
1208                 if (index[a][0] == '\0')
1209                         nEmpty++;
1210         }
1211
1212         while (hptr != NULL) {
1213                 safestrncpy(buf, hptr->line, sizeof buf);
1214                 /* lprintf(9, "HTTP HEADER: %s\n", buf); */
1215                 hptr = hptr->next;
1216
1217                 if (!strncasecmp(buf, "Cookie: webcit=", 15)) {
1218                         safestrncpy(cookie, &buf[15], sizeof cookie);
1219                         cookie_to_stuff(cookie, NULL,
1220                                         c_username, sizeof c_username,
1221                                         c_password, sizeof c_password,
1222                                         c_roomname, sizeof c_roomname);
1223                 }
1224                 else if (!strncasecmp(buf, "Authorization: Basic ", 21)) {
1225                         CtdlDecodeBase64(c_httpauth_string, &buf[21], strlen(&buf[21]));
1226                         extract_token(c_httpauth_user, c_httpauth_string, 0, ':', sizeof c_httpauth_user);
1227                         extract_token(c_httpauth_pass, c_httpauth_string, 1, ':', sizeof c_httpauth_pass);
1228                 }
1229                 else if (!strncasecmp(buf, "Content-length: ", 16)) {
1230                         ContentLength = atoi(&buf[16]);
1231                 }
1232                 else if (!strncasecmp(buf, "Content-type: ", 14)) {
1233                         safestrncpy(ContentType, &buf[14], sizeof ContentType);
1234                 }
1235                 else if (!strncasecmp(buf, "User-agent: ", 12)) {
1236                         safestrncpy(user_agent, &buf[12], sizeof user_agent);
1237                 }
1238                 else if (!strncasecmp(buf, "X-Forwarded-Host: ", 18)) {
1239                         if (follow_xff) {
1240                                 safestrncpy(WC->http_host, &buf[18], sizeof WC->http_host);
1241                         }
1242                 }
1243                 else if (!strncasecmp(buf, "Host: ", 6)) {
1244                         if (IsEmptyStr(WC->http_host)) {
1245                                 safestrncpy(WC->http_host, &buf[6], sizeof WC->http_host);
1246                         }
1247                 }
1248                 else if (!strncasecmp(buf, "X-Forwarded-For: ", 17)) {
1249                         safestrncpy(browser_host, &buf[17], sizeof browser_host);
1250                         while (num_tokens(browser_host, ',') > 1) {
1251                                 remove_token(browser_host, 0, ',');
1252                         }
1253                         striplt(browser_host);
1254                 }
1255                 /** Only WAP gateways explicitly name this content-type */
1256                 else if (strstr(buf, "text/vnd.wap.wml")) {
1257                         WC->is_wap = 1;
1258                 }
1259         }
1260
1261         if (ContentLength > 0) {
1262                 content = malloc(ContentLength + SIZ);
1263                 memset(content, 0, ContentLength + SIZ);
1264                 sprintf(content, "Content-type: %s\n"
1265                                 "Content-length: %d\n\n",
1266                                 ContentType, ContentLength);
1267                 body_start = strlen(content);
1268
1269                 /** Read the entire input data at once. */
1270                 client_read(WC->http_sock, &content[BytesRead+body_start], ContentLength);
1271
1272                 if (!strncasecmp(ContentType, "application/x-www-form-urlencoded", 33)) {
1273                         addurls(&content[body_start]);
1274                 } else if (!strncasecmp(ContentType, "multipart", 9)) {
1275                         content_end = content + ContentLength + body_start;
1276                         mime_parser(content, content_end, *upload_handler, NULL, NULL, NULL, 0);
1277                 }
1278         } else {
1279                 content = NULL;
1280         }
1281
1282         /** make a note of where we are in case the user wants to save it */
1283         safestrncpy(WC->this_page, cmd, sizeof(WC->this_page));
1284         remove_token(WC->this_page, 2, ' ');
1285         remove_token(WC->this_page, 0, ' ');
1286
1287         /** If there are variables in the URL, we must grab them now */
1288         len = strlen(cmd);
1289         for (a = 0; a < len; ++a) {
1290                 if ((cmd[a] == '?') || (cmd[a] == '&')) {
1291                         for (b = a; b < len; ++b) {
1292                                 if (isspace(cmd[b])){
1293                                         cmd[b] = 0;
1294                                         len = b - 1;
1295                                 }
1296                         }
1297                         addurls(&cmd[a + 1]);
1298                         cmd[a] = 0;
1299                         len = a - 1;
1300                 }
1301         }
1302
1303         /** If it's a "force 404" situation then display the error and bail. */
1304         if (!strcmp(action, "404")) {
1305                 wprintf("HTTP/1.1 404 Not found\r\n");
1306                 wprintf("Content-Type: text/plain\r\n");
1307                 wprintf("\r\n");
1308                 wprintf("Not found\r\n");
1309                 goto SKIP_ALL_THIS_CRAP;
1310         }
1311
1312         /** Static content can be sent without connecting to Citadel. */
1313         is_static = 0;
1314         for (a=0; a<ndirs; ++a) {
1315                 if (!strcasecmp(action, (char*)static_content_dirs[a])) { /* map web to disk location */
1316                         is_static = 1;
1317                         n_static = a;
1318                 }
1319         }
1320         if (is_static) {
1321                 if (nBackDots < 2)
1322                 {
1323                         snprintf(buf, sizeof buf, "%s/%s/%s/%s/%s/%s/%s/%s",
1324                                  static_dirs[n_static],
1325                                  index[1], index[2], index[3], index[4], index[5], index[6], index[7]);
1326                         for (a=0; a<8; ++a) {
1327                                 if (buf[strlen(buf)-1] == '/') {
1328                                         buf[strlen(buf)-1] = 0;
1329                                 }
1330                         }
1331                         for (a = 0; a < strlen(buf); ++a) {
1332                                 if (isspace(buf[a])) {
1333                                         buf[a] = 0;
1334                                 }
1335                         }
1336                         output_static(buf);
1337                 }
1338                 else
1339                 {
1340                         lprintf(9, "Suspicious request. Ignoring.");
1341                         wprintf("HTTP/1.1 404 Security check failed\r\n");
1342                         wprintf("Content-Type: text/plain\r\n");
1343                         wprintf("\r\n");
1344                         wprintf("You have sent a malformed or invalid request.\r\n");
1345                 }
1346                 goto SKIP_ALL_THIS_CRAP;        /* Don't try to connect */
1347         }
1348
1349         /* If the client sent a nonce that is incorrect, kill the request. */
1350         if (strlen(bstr("nonce")) > 0) {
1351                 lprintf(9, "Comparing supplied nonce %s to session nonce %ld\n",
1352                         bstr("nonce"), WC->nonce);
1353                 if (atoi(bstr("nonce")) != WC->nonce) {
1354                         lprintf(9, "Ignoring request with mismatched nonce.\n");
1355                         wprintf("HTTP/1.1 404 Security check failed\r\n");
1356                         wprintf("Content-Type: text/plain\r\n");
1357                         wprintf("\r\n");
1358                         wprintf("Security check failed.\r\n");
1359                         goto SKIP_ALL_THIS_CRAP;
1360                 }
1361         }
1362
1363         /**
1364          * If we're not connected to a Citadel server, try to hook up the
1365          * connection now.
1366          */
1367         if (!WC->connected) {
1368                 if (!strcasecmp(ctdlhost, "uds")) {
1369                         /* unix domain socket */
1370                         sprintf(buf, "%s/citadel.socket", ctdlport);
1371                         WC->serv_sock = uds_connectsock(buf);
1372                 }
1373                 else {
1374                         /* tcp socket */
1375                         WC->serv_sock = tcp_connectsock(ctdlhost, ctdlport);
1376                 }
1377
1378                 if (WC->serv_sock < 0) {
1379                         do_logout();
1380                         goto SKIP_ALL_THIS_CRAP;
1381                 }
1382                 else {
1383                         WC->connected = 1;
1384                         serv_getln(buf, sizeof buf);    /** get the server welcome message */
1385
1386                         /**
1387                          * From what host is our user connecting?  Go with
1388                          * the host at the other end of the HTTP socket,
1389                          * unless we are following X-Forwarded-For: headers
1390                          * and such a header has already turned up something.
1391                          */
1392                         if ( (!follow_xff) || (strlen(browser_host) == 0) ) {
1393                                 locate_host(browser_host, WC->http_sock);
1394                         }
1395
1396                         get_serv_info(browser_host, user_agent);
1397                         if (serv_info.serv_rev_level < MINIMUM_CIT_VERSION) {
1398                                 wprintf(_("You are connected to a Citadel "
1399                                         "server running Citadel %d.%02d. \n"
1400                                         "In order to run this version of WebCit "
1401                                         "you must also have Citadel %d.%02d or"
1402                                         " newer.\n\n\n"),
1403                                                 serv_info.serv_rev_level / 100,
1404                                                 serv_info.serv_rev_level % 100,
1405                                                 MINIMUM_CIT_VERSION / 100,
1406                                                 MINIMUM_CIT_VERSION % 100
1407                                         );
1408                                 end_webcit_session();
1409                                 goto SKIP_ALL_THIS_CRAP;
1410                         }
1411                 }
1412         }
1413
1414         /**
1415          * Functions which can be performed without logging in
1416          */
1417         if (!strcasecmp(action, "listsub")) {
1418                 do_listsub();
1419                 goto SKIP_ALL_THIS_CRAP;
1420         }
1421 #ifdef WEBCIT_WITH_CALENDAR_SERVICE
1422         if (!strcasecmp(action, "freebusy")) {
1423                 do_freebusy(cmd);
1424                 goto SKIP_ALL_THIS_CRAP;
1425         }
1426 #endif
1427
1428         /**
1429          * If we're not logged in, but we have HTTP Authentication data,
1430          * try logging in to Citadel using that.
1431          */
1432         if ((!WC->logged_in)
1433            && (strlen(c_httpauth_user) > 0)
1434            && (strlen(c_httpauth_pass) > 0)) {
1435                 serv_printf("USER %s", c_httpauth_user);
1436                 serv_getln(buf, sizeof buf);
1437                 if (buf[0] == '3') {
1438                         serv_printf("PASS %s", c_httpauth_pass);
1439                         serv_getln(buf, sizeof buf);
1440                         if (buf[0] == '2') {
1441                                 become_logged_in(c_httpauth_user,
1442                                                 c_httpauth_pass, buf);
1443                                 safestrncpy(WC->httpauth_user, c_httpauth_user, sizeof WC->httpauth_user);
1444                                 safestrncpy(WC->httpauth_pass, c_httpauth_pass, sizeof WC->httpauth_pass);
1445                         } else {
1446                                 /** Should only display when password is wrong */
1447                                 authorization_required(&buf[4]);
1448                                 goto SKIP_ALL_THIS_CRAP;
1449                         }
1450                 }
1451         }
1452
1453         /** This needs to run early */
1454         if (!strcasecmp(action, "rss")) {
1455                 display_rss(bstr("room"), request_method);
1456                 goto SKIP_ALL_THIS_CRAP;
1457         }
1458
1459         /**
1460          * The GroupDAV stuff relies on HTTP authentication instead of
1461          * our session's authentication.
1462          */
1463         if (!strncasecmp(action, "groupdav", 8)) {
1464                 groupdav_main(req, ContentType, /* do GroupDAV methods */
1465                         ContentLength, content+body_start);
1466                 if (!WC->logged_in) {
1467                         WC->killthis = 1;       /* If not logged in, don't */
1468                 }                               /* keep the session active */
1469                 goto SKIP_ALL_THIS_CRAP;
1470         }
1471
1472
1473         /**
1474          * Automatically send requests with any method other than GET or
1475          * POST to the GroupDAV code as well.
1476          */
1477         if ((strcasecmp(request_method, "GET")) && (strcasecmp(request_method, "POST"))) {
1478                 groupdav_main(req, ContentType, /** do GroupDAV methods */
1479                         ContentLength, content+body_start);
1480                 if (!WC->logged_in) {
1481                         WC->killthis = 1;       /** If not logged in, don't */
1482                 }                               /** keep the session active */
1483                 goto SKIP_ALL_THIS_CRAP;
1484         }
1485
1486         /**
1487          * If we're not logged in, but we have username and password cookies
1488          * supplied by the browser, try using them to log in.
1489          */
1490         if ((!WC->logged_in)
1491            && (!IsEmptyStr(c_username))
1492            && (!IsEmptyStr(c_password))) {
1493                 serv_printf("USER %s", c_username);
1494                 serv_getln(buf, sizeof buf);
1495                 if (buf[0] == '3') {
1496                         serv_printf("PASS %s", c_password);
1497                         serv_getln(buf, sizeof buf);
1498                         if (buf[0] == '2') {
1499                                 become_logged_in(c_username, c_password, buf);
1500                         }
1501                 }
1502         }
1503         /**
1504          * If we don't have a current room, but a cookie specifying the
1505          * current room is supplied, make an effort to go there.
1506          */
1507         if ((IsEmptyStr(WC->wc_roomname)) && (!IsEmptyStr(c_roomname))) {
1508                 serv_printf("GOTO %s", c_roomname);
1509                 serv_getln(buf, sizeof buf);
1510                 if (buf[0] == '2') {
1511                         safestrncpy(WC->wc_roomname, c_roomname, sizeof WC->wc_roomname);
1512                 }
1513         }
1514
1515         if (!strcasecmp(action, "image")) {
1516                 output_image();
1517
1518                 /**
1519                  * All functions handled below this point ... make sure we log in
1520                  * before doing anything else!
1521                  */
1522         } else if ((!WC->logged_in) && (!strcasecmp(action, "login"))) {
1523                 do_login();
1524         } else if (!WC->logged_in) {
1525                 display_login(NULL);
1526         }
1527
1528         /**
1529          * Various commands...
1530          */
1531
1532         else if (!strcasecmp(action, "do_welcome")) {
1533                 do_welcome();
1534         } else if (!strcasecmp(action, "blank")) {
1535                 blank_page();
1536         } else if (!strcasecmp(action, "do_template")) {
1537                 url_do_template();
1538         } else if (!strcasecmp(action, "display_aide_menu")) {
1539                 display_aide_menu();
1540         } else if (!strcasecmp(action, "server_shutdown")) {
1541                 display_shutdown();
1542         } else if (!strcasecmp(action, "display_main_menu")) {
1543                 display_main_menu();
1544         } else if (!strcasecmp(action, "who")) {
1545                 who();
1546         } else if (!strcasecmp(action, "sslg")) {
1547                 seconds_since_last_gexp();
1548         } else if (!strcasecmp(action, "who_inner_html")) {
1549                 begin_ajax_response();
1550                 who_inner_div();
1551                 end_ajax_response();
1552         } else if (!strcasecmp(action, "wholist_section")) {
1553                 begin_ajax_response();
1554                 wholist_section();
1555                 end_ajax_response();
1556         } else if (!strcasecmp(action, "new_messages_html")) {
1557                 begin_ajax_response();
1558                 new_messages_section();
1559                 end_ajax_response();
1560         } else if (!strcasecmp(action, "tasks_inner_html")) {
1561                 begin_ajax_response();
1562                 tasks_section();
1563                 end_ajax_response();
1564         } else if (!strcasecmp(action, "calendar_inner_html")) {
1565                 begin_ajax_response();
1566                 calendar_section();
1567                 end_ajax_response();
1568         } else if (!strcasecmp(action, "mini_calendar")) {
1569                 begin_ajax_response();
1570                 ajax_mini_calendar();
1571                 end_ajax_response();
1572         } else if (!strcasecmp(action, "iconbar_ajax_menu")) {
1573                 begin_ajax_response();
1574                 do_iconbar();
1575                 end_ajax_response();
1576         } else if (!strcasecmp(action, "iconbar_ajax_rooms")) {
1577                 begin_ajax_response();
1578                 do_iconbar_roomlist();
1579                 end_ajax_response();
1580         } else if (!strcasecmp(action, "knrooms")) {
1581                 knrooms();
1582         } else if (!strcasecmp(action, "gotonext")) {
1583                 slrp_highest();
1584                 gotonext();
1585         } else if (!strcasecmp(action, "skip")) {
1586                 gotonext();
1587         } else if (!strcasecmp(action, "ungoto")) {
1588                 ungoto();
1589         } else if (!strcasecmp(action, "dotgoto")) {
1590                 if (WC->wc_view != VIEW_MAILBOX) {      /* dotgoto acts like dotskip when we're in a mailbox view */
1591                         slrp_highest();
1592                 }
1593                 smart_goto(bstr("room"));
1594         } else if (!strcasecmp(action, "dotskip")) {
1595                 smart_goto(bstr("room"));
1596         } else if (!strcasecmp(action, "termquit")) {
1597                 do_logout();
1598         } else if (!strcasecmp(action, "readnew")) {
1599                 readloop("readnew");
1600         } else if (!strcasecmp(action, "readold")) {
1601                 readloop("readold");
1602         } else if (!strcasecmp(action, "readfwd")) {
1603                 readloop("readfwd");
1604         } else if (!strcasecmp(action, "headers")) {
1605                 readloop("headers");
1606         } else if (!strcasecmp(action, "do_search")) {
1607                 readloop("do_search");
1608         } else if (!strcasecmp(action, "msg")) {
1609                 embed_message(index[1]);
1610         } else if (!strcasecmp(action, "printmsg")) {
1611                 print_message(index[1]);
1612         } else if (!strcasecmp(action, "msgheaders")) {
1613                 display_headers(index[1]);
1614         } else if (!strcasecmp(action, "wiki")) {
1615                 display_wiki_page();
1616         } else if (!strcasecmp(action, "display_enter")) {
1617                 display_enter();
1618         } else if (!strcasecmp(action, "post")) {
1619                 post_message();
1620         } else if (!strcasecmp(action, "move_msg")) {
1621                 move_msg();
1622         } else if (!strcasecmp(action, "delete_msg")) {
1623                 delete_msg();
1624         } else if (!strcasecmp(action, "userlist")) {
1625                 userlist();
1626         } else if (!strcasecmp(action, "showuser")) {
1627                 showuser();
1628         } else if (!strcasecmp(action, "display_page")) {
1629                 display_page();
1630         } else if (!strcasecmp(action, "page_user")) {
1631                 page_user();
1632         } else if (!strcasecmp(action, "chat")) {
1633                 do_chat();
1634         } else if (!strcasecmp(action, "display_private")) {
1635                 display_private("", 0);
1636         } else if (!strcasecmp(action, "goto_private")) {
1637                 goto_private();
1638         } else if (!strcasecmp(action, "zapped_list")) {
1639                 zapped_list();
1640         } else if (!strcasecmp(action, "display_zap")) {
1641                 display_zap();
1642         } else if (!strcasecmp(action, "zap")) {
1643                 zap();
1644         } else if (!strcasecmp(action, "display_entroom")) {
1645                 display_entroom();
1646         } else if (!strcasecmp(action, "entroom")) {
1647                 entroom();
1648         } else if (!strcasecmp(action, "display_whok")) {
1649                 display_whok();
1650         } else if (!strcasecmp(action, "do_invt_kick")) {
1651                 do_invt_kick();
1652         } else if (!strcasecmp(action, "display_editroom")) {
1653                 display_editroom();
1654         } else if (!strcasecmp(action, "netedit")) {
1655                 netedit();
1656         } else if (!strcasecmp(action, "editroom")) {
1657                 editroom();
1658         } else if (!strcasecmp(action, "display_editinfo")) {
1659                 display_edit(_("Room info"), "EINF 0", "RINF", "editinfo", 1);
1660         } else if (!strcasecmp(action, "editinfo")) {
1661                 save_edit(_("Room info"), "EINF 1", 1);
1662         } else if (!strcasecmp(action, "display_editbio")) {
1663                 sprintf(buf, "RBIO %s", WC->wc_fullname);
1664                 display_edit(_("Your bio"), "NOOP", buf, "editbio", 3);
1665         } else if (!strcasecmp(action, "editbio")) {
1666                 save_edit(_("Your bio"), "EBIO", 0);
1667         } else if (!strcasecmp(action, "confirm_move_msg")) {
1668                 confirm_move_msg();
1669         } else if (!strcasecmp(action, "delete_room")) {
1670                 delete_room();
1671         } else if (!strcasecmp(action, "validate")) {
1672                 validate();
1673         } else if (!strcasecmp(action, "display_editpic")) {
1674                 display_graphics_upload(_("your photo"),
1675                                         "UIMG 0|_userpic_",
1676                                         "editpic");
1677         } else if (!strcasecmp(action, "editpic")) {
1678                 do_graphics_upload("UIMG 1|_userpic_");
1679         } else if (!strcasecmp(action, "display_editroompic")) {
1680                 display_graphics_upload(_("the icon for this room"),
1681                                         "UIMG 0|_roompic_",
1682                                         "editroompic");
1683         } else if (!strcasecmp(action, "editroompic")) {
1684                 do_graphics_upload("UIMG 1|_roompic_");
1685         } else if (!strcasecmp(action, "delete_floor")) {
1686                 delete_floor();
1687         } else if (!strcasecmp(action, "rename_floor")) {
1688                 rename_floor();
1689         } else if (!strcasecmp(action, "create_floor")) {
1690                 create_floor();
1691         } else if (!strcasecmp(action, "display_editfloorpic")) {
1692                 sprintf(buf, "UIMG 0|_floorpic_|%s",
1693                         bstr("which_floor"));
1694                 display_graphics_upload(_("the icon for this floor"),
1695                                         buf,
1696                                         "editfloorpic");
1697         } else if (!strcasecmp(action, "editfloorpic")) {
1698                 sprintf(buf, "UIMG 1|_floorpic_|%s",
1699                         bstr("which_floor"));
1700                 do_graphics_upload(buf);
1701         } else if (!strcasecmp(action, "display_reg")) {
1702                 display_reg(0);
1703         } else if (!strcasecmp(action, "display_changepw")) {
1704                 display_changepw();
1705         } else if (!strcasecmp(action, "changepw")) {
1706                 changepw();
1707         } else if (!strcasecmp(action, "display_edit_node")) {
1708                 display_edit_node();
1709         } else if (!strcasecmp(action, "edit_node")) {
1710                 edit_node();
1711         } else if (!strcasecmp(action, "display_netconf")) {
1712                 display_netconf();
1713         } else if (!strcasecmp(action, "display_confirm_delete_node")) {
1714                 display_confirm_delete_node();
1715         } else if (!strcasecmp(action, "delete_node")) {
1716                 delete_node();
1717         } else if (!strcasecmp(action, "display_add_node")) {
1718                 display_add_node();
1719         } else if (!strcasecmp(action, "terminate_session")) {
1720                 slrp_highest();
1721                 terminate_session();
1722         } else if (!strcasecmp(action, "edit_me")) {
1723                 edit_me();
1724         } else if (!strcasecmp(action, "display_siteconfig")) {
1725                 display_siteconfig();
1726         } else if (!strcasecmp(action, "chat_recv")) {
1727                 chat_recv();
1728         } else if (!strcasecmp(action, "chat_send")) {
1729                 chat_send();
1730         } else if (!strcasecmp(action, "siteconfig")) {
1731                 siteconfig();
1732         } else if (!strcasecmp(action, "display_generic")) {
1733                 display_generic();
1734         } else if (!strcasecmp(action, "do_generic")) {
1735                 do_generic();
1736         } else if (!strcasecmp(action, "ajax_servcmd")) {
1737                 ajax_servcmd();
1738         } else if (!strcasecmp(action, "display_menubar")) {
1739                 display_menubar(1);
1740         } else if (!strcasecmp(action, "mimepart")) {
1741                 mimepart(index[1], index[2], 0);
1742         } else if (!strcasecmp(action, "mimepart_download")) {
1743                 mimepart(index[1], index[2], 1);
1744         } else if (!strcasecmp(action, "edit_vcard")) {
1745                 edit_vcard();
1746         } else if (!strcasecmp(action, "submit_vcard")) {
1747                 submit_vcard();
1748         } else if (!strcasecmp(action, "select_user_to_edit")) {
1749                 select_user_to_edit(NULL, NULL);
1750         } else if (!strcasecmp(action, "display_edituser")) {
1751                 display_edituser(NULL, 0);
1752         } else if (!strcasecmp(action, "edituser")) {
1753                 edituser();
1754         } else if (!strcasecmp(action, "create_user")) {
1755                 create_user();
1756         } else if (!strcasecmp(action, "changeview")) {
1757                 change_view();
1758         } else if (!strcasecmp(action, "change_start_page")) {
1759                 change_start_page();
1760         } else if (!strcasecmp(action, "display_floorconfig")) {
1761                 display_floorconfig(NULL);
1762         } else if (!strcasecmp(action, "toggle_self_service")) {
1763                 toggle_self_service();
1764 #ifdef WEBCIT_WITH_CALENDAR_SERVICE
1765         } else if (!strcasecmp(action, "display_edit_task")) {
1766                 display_edit_task();
1767         } else if (!strcasecmp(action, "save_task")) {
1768                 save_task();
1769         } else if (!strcasecmp(action, "display_edit_event")) {
1770                 display_edit_event();
1771         } else if (!strcasecmp(action, "save_event")) {
1772                 save_event();
1773         } else if (!strcasecmp(action, "respond_to_request")) {
1774                 respond_to_request();
1775         } else if (!strcasecmp(action, "handle_rsvp")) {
1776                 handle_rsvp();
1777 #endif
1778         } else if (!strcasecmp(action, "summary")) {
1779                 summary();
1780         } else if (!strcasecmp(action, "summary_inner_div")) {
1781                 begin_ajax_response();
1782                 summary_inner_div();
1783                 end_ajax_response();
1784         } else if (!strcasecmp(action, "display_customize_iconbar")) {
1785                 display_customize_iconbar();
1786         } else if (!strcasecmp(action, "commit_iconbar")) {
1787                 commit_iconbar();
1788         } else if (!strcasecmp(action, "set_room_policy")) {
1789                 set_room_policy();
1790         } else if (!strcasecmp(action, "display_inetconf")) {
1791                 display_inetconf();
1792         } else if (!strcasecmp(action, "save_inetconf")) {
1793                 save_inetconf();
1794         } else if (!strcasecmp(action, "display_smtpqueue")) {
1795                 display_smtpqueue();
1796         } else if (!strcasecmp(action, "display_smtpqueue_inner_div")) {
1797                 display_smtpqueue_inner_div();
1798         } else if (!strcasecmp(action, "display_sieve")) {
1799                 display_sieve();
1800         } else if (!strcasecmp(action, "save_sieve")) {
1801                 save_sieve();
1802         } else if (!strcasecmp(action, "display_pushemail")) {
1803                 display_pushemail();
1804         } else if (!strcasecmp(action, "save_pushemail")) {
1805                 save_pushemail();
1806         } else if (!strcasecmp(action, "display_add_remove_scripts")) {
1807                 display_add_remove_scripts(NULL);
1808         } else if (!strcasecmp(action, "create_script")) {
1809                 create_script();
1810         } else if (!strcasecmp(action, "delete_script")) {
1811                 delete_script();
1812         } else if (!strcasecmp(action, "setup_wizard")) {
1813                 do_setup_wizard();
1814         } else if (!strcasecmp(action, "display_preferences")) {
1815                 display_preferences();
1816         } else if (!strcasecmp(action, "set_preferences")) {
1817                 set_preferences();
1818         } else if (!strcasecmp(action, "recp_autocomplete")) {
1819                 recp_autocomplete(bstr("recp"));
1820         } else if (!strcasecmp(action, "cc_autocomplete")) {
1821                 recp_autocomplete(bstr("cc"));
1822         } else if (!strcasecmp(action, "bcc_autocomplete")) {
1823                 recp_autocomplete(bstr("bcc"));
1824         } else if (!strcasecmp(action, "display_address_book_middle_div")) {
1825                 display_address_book_middle_div();
1826         } else if (!strcasecmp(action, "display_address_book_inner_div")) {
1827                 display_address_book_inner_div();
1828         } else if (!strcasecmp(action, "set_floordiv_expanded")) {
1829                 set_floordiv_expanded(index[1]);
1830         } else if (!strcasecmp(action, "diagnostics")) {
1831                 output_headers(1, 1, 1, 0, 0, 0);
1832                 wprintf("Session: %d<hr />\n", WC->wc_session);
1833                 wprintf("Command: <br /><PRE>\n");
1834                 escputs(cmd);
1835                 wprintf("</PRE><hr />\n");
1836                 wprintf("Variables: <br /><PRE>\n");
1837                 dump_vars();
1838                 wprintf("</PRE><hr />\n");
1839                 wDumpContent(1);
1840         } else if (!strcasecmp(action, "updatenote")) {
1841                 updatenote();
1842         } else if (!strcasecmp(action, "display_room_directory")) {
1843                 display_room_directory();
1844         } else if (!strcasecmp(action, "download_file")) {
1845                 download_file(index[1]);
1846         } else if (!strcasecmp(action, "upload_file")) {
1847                 upload_file();
1848         }
1849
1850         /** When all else fais, display the main menu. */
1851         else {
1852                 display_main_menu();
1853         }
1854
1855 SKIP_ALL_THIS_CRAP:
1856         fflush(stdout);
1857         if (content != NULL) {
1858                 free(content);
1859                 content = NULL;
1860         }
1861         free_urls();
1862         if (WC->upload_length > 0) {
1863                 free(WC->upload);
1864                 WC->upload_length = 0;
1865         }
1866 }
1867
1868 /**
1869  * \brief Replacement for sleep() that uses select() in order to avoid SIGALRM
1870  * \param seconds how many seconds should we sleep?
1871  */
1872 void sleeeeeeeeeep(int seconds)
1873 {
1874         struct timeval tv;
1875
1876         tv.tv_sec = seconds;
1877         tv.tv_usec = 0;
1878         select(0, NULL, NULL, NULL, &tv);
1879 }
1880
1881
1882 /*@}*/