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 #include <stdarg.h>
   9 #define SHOW_ME_VAPPEND_PRINTF
  10 #include "webcit.h"
  11 #include "groupdav.h"
  12 #include "webserver.h"
  13
  14 #include <stdio.h>
  15 #include <stdarg.h>
  16
  17 /*
  18  * String to unset the cookie.
  19  * Any date "in the past" will work, so I chose my birthday, right down to
  20  * the exact minute.  :)
  21  */
  22 static char *unset = "; expires=28-May-1971 18:10:00 GMT";
  23
  24 HashList *HandlerHash = NULL;
  25
  26 void WebcitAddUrlHandler(const char * UrlString,
  27                          long UrlSLen,
  28                          WebcitHandlerFunc F,
  29                          long Flags)
  30 {
  31         WebcitHandler *NewHandler;
  32
  33         if (HandlerHash == NULL)
  34                 HandlerHash = NewHash(1, NULL);
  35
  36         NewHandler = (WebcitHandler*) malloc(sizeof(WebcitHandler));
  37         NewHandler->F = F;
  38         NewHandler->Flags = Flags;
  39         Put(HandlerHash, UrlString, UrlSLen, NewHandler, NULL);
  40 }
  41
  42 /*
  43  * remove escaped strings from i.e. the url string (like %20 for blanks)
  44  */
  45 long unescape_input(char *buf)
  46 {
  47         int a, b;
  48         char hex[3];
  49         long buflen;
  50         long len;
  51
  52         buflen = strlen(buf);
  53
  54         while ((buflen > 0) && (isspace(buf[buflen - 1]))){
  55                 buf[buflen - 1] = 0;
  56                 buflen --;
  57         }
  58
  59         a = 0;
  60         while (a < buflen) {
  61                 if (buf[a] == '+')
  62                         buf[a] = ' ';
  63                 if (buf[a] == '%') {
  64                         /* don't let % chars through, rather truncate the input. */
  65                         if (a + 2 > buflen) {
  66                                 buf[a] = '\0';
  67                                 buflen = a;
  68                         }
  69                         else {
  70                                 hex[0] = buf[a + 1];
  71                                 hex[1] = buf[a + 2];
  72                                 hex[2] = 0;
  73                                 b = 0;
  74                                 sscanf(hex, "%02x", &b);
  75                                 buf[a] = (char) b;
  76                                 len = buflen - a - 2;
  77                                 if (len > 0)
  78                                         memmove(&buf[a + 1], &buf[a + 3], len);
  79
  80                                 buflen -=2;
  81                         }
  82                 }
  83                 a++;
  84         }
  85         return a;
  86 }
  87
  88 void free_url(void *U)
  89 {
  90         urlcontent *u = (urlcontent*) U;
  91         FreeStrBuf(&u->url_data);
  92         free(u);
  93 }
  94
  95 /*
  96  * Extract variables from the URL.
  97  */
  98 void addurls(StrBuf *url)
  99 {
 100         const char *aptr, *bptr, *eptr, *up;
 101 ///     char *buf;
 102         int len, keylen;
 103         urlcontent *u;
 104         struct wcsession *WCC = WC;
 105
 106         if (WCC->urlstrings == NULL)
 107                 WCC->urlstrings = NewHash(1, NULL);
 108 //      buf = (char*) malloc (ulen + 1);
 109 //      memcpy(buf, url, ulen);
 110 ///     buf[ulen] = '\0';
 111         eptr = ChrPtr(url) + StrLength(url);
 112         up = ChrPtr(url);
 113         while ((up < eptr) && (!IsEmptyStr(up))) {
 114                 aptr = up;
 115                 while ((aptr < eptr) && (*aptr != '\0') && (*aptr != '='))
 116                         aptr++;
 117                 if (*aptr != '=') {
 118                         ///free(buf);
 119                         return;
 120                 }
 121                 ///*aptr = '\0';
 122                 aptr++;
 123                 bptr = aptr;
 124                 while ((bptr < eptr) && (*bptr != '\0')
 125                       && (*bptr != '&') && (*bptr != '?') && (*bptr != ' ')) {
 126                         bptr++;
 127                 }
 128                 //*bptr = '\0';
 129                 keylen = aptr - up - 1; /* -1 -> '=' */
 130                 if(keylen > sizeof(u->url_key)) {
 131                         lprintf(1, "URLkey to long! [%s]", up);
 132                         continue;
 133                 }
 134
 135                 u = (urlcontent *) malloc(sizeof(urlcontent));
 136                 memcpy(u->url_key, up, keylen);
 137                 u->url_key[keylen] = '\0';
 138                 if (keylen < 0) {
 139                         lprintf(1, "URLkey to long! [%s]", up);
 140                         free(u);
 141                         continue;
 142                 }
 143
 144                 Put(WCC->urlstrings, u->url_key, keylen, u, free_url);
 145                 len = bptr - aptr;
 146                 u->url_data = NewStrBufPlain(aptr, len);
 147                 StrBufUnescape(u->url_data, 1);
 148
 149                 up = bptr;
 150                 ++up;
 151 #ifdef DEBUG_URLSTRINGS
 152                 lprintf(9, "%s = [%ld]  %s\n", u->url_key, u->url_data_size, ChrPtr(u->url_data));
 153 #endif
 154         }
 155         //free(buf);
 156 }
 157
 158 /*
 159  * free urlstring memory
 160  */
 161 void free_urls(void)
 162 {
 163         DeleteHash(&WC->urlstrings);
 164 }
 165
 166 /*
 167  * Diagnostic function to display the contents of all variables
 168  */
 169
 170 void dump_vars(void)
 171 {
 172         struct wcsession *WCC = WC;
 173         urlcontent *u;
 174         void *U;
 175         long HKLen;
 176         const char *HKey;
 177         HashPos *Cursor;
 178
 179         Cursor = GetNewHashPos ();
 180         while (GetNextHashPos(WCC->urlstrings, Cursor, &HKLen, &HKey, &U)) {
 181                 u = (urlcontent*) U;
 182                 wprintf("%38s = %s\n", u->url_key, ChrPtr(u->url_data));
 183         }
 184 }
 185
 186 /*
 187  * Return the value of a variable supplied to the current web page (from the url or a form)
 188  */
 189
 190 const char *XBstr(char *key, size_t keylen, size_t *len)
 191 {
 192         void *U;
 193
 194         if ((WC->urlstrings != NULL) &&
 195             GetHash(WC->urlstrings, key, keylen, &U)) {
 196                 *len = StrLength(((urlcontent *)U)->url_data);
 197                 return ChrPtr(((urlcontent *)U)->url_data);
 198         }
 199         else {
 200                 *len = 0;
 201                 return ("");
 202         }
 203 }
 204
 205 const char *XBSTR(char *key, size_t *len)
 206 {
 207         void *U;
 208
 209         if ((WC->urlstrings != NULL) &&
 210             GetHash(WC->urlstrings, key, strlen (key), &U)){
 211                 *len = StrLength(((urlcontent *)U)->url_data);
 212                 return ChrPtr(((urlcontent *)U)->url_data);
 213         }
 214         else {
 215                 *len = 0;
 216                 return ("");
 217         }
 218 }
 219
 220
 221 const char *BSTR(char *key)
 222 {
 223         void *U;
 224
 225         if ((WC->urlstrings != NULL) &&
 226             GetHash(WC->urlstrings, key, strlen (key), &U))
 227                 return ChrPtr(((urlcontent *)U)->url_data);
 228         else
 229                 return ("");
 230 }
 231
 232 const char *Bstr(char *key, size_t keylen)
 233 {
 234         void *U;
 235
 236         if ((WC->urlstrings != NULL) &&
 237             GetHash(WC->urlstrings, key, keylen, &U))
 238                 return ChrPtr(((urlcontent *)U)->url_data);
 239         else
 240                 return ("");
 241 }
 242
 243 const StrBuf *SBSTR(const char *key)
 244 {
 245         void *U;
 246
 247         if ((WC->urlstrings != NULL) &&
 248             GetHash(WC->urlstrings, key, strlen (key), &U))
 249                 return ((urlcontent *)U)->url_data;
 250         else
 251                 return NULL;
 252 }
 253
 254 const StrBuf *SBstr(const char *key, size_t keylen)
 255 {
 256         void *U;
 257
 258         if ((WC->urlstrings != NULL) &&
 259             GetHash(WC->urlstrings, key, keylen, &U))
 260                 return ((urlcontent *)U)->url_data;
 261         else
 262                 return NULL;
 263 }
 264
 265 long LBstr(char *key, size_t keylen)
 266 {
 267         void *U;
 268
 269         if ((WC->urlstrings != NULL) &&
 270             GetHash(WC->urlstrings, key, keylen, &U))
 271                 return StrTol(((urlcontent *)U)->url_data);
 272         else
 273                 return (0);
 274 }
 275
 276 long LBSTR(char *key)
 277 {
 278         void *U;
 279
 280         if ((WC->urlstrings != NULL) &&
 281             GetHash(WC->urlstrings, key, strlen(key), &U))
 282                 return StrTol(((urlcontent *)U)->url_data);
 283         else
 284                 return (0);
 285 }
 286
 287 int IBstr(char *key, size_t keylen)
 288 {
 289         void *U;
 290
 291         if ((WC->urlstrings != NULL) &&
 292             GetHash(WC->urlstrings, key, keylen, &U))
 293                 return StrTol(((urlcontent *)U)->url_data);
 294         else
 295                 return (0);
 296 }
 297
 298 int IBSTR(char *key)
 299 {
 300         void *U;
 301
 302         if ((WC->urlstrings != NULL) &&
 303             GetHash(WC->urlstrings, key, strlen(key), &U))
 304                 return StrToi(((urlcontent *)U)->url_data);
 305         else
 306                 return (0);
 307 }
 308
 309 int HaveBstr(char *key, size_t keylen)
 310 {
 311         void *U;
 312
 313         if ((WC->urlstrings != NULL) &&
 314             GetHash(WC->urlstrings, key, keylen, &U))
 315                 return (StrLength(((urlcontent *)U)->url_data) != 0);
 316         else
 317                 return (0);
 318 }
 319
 320 int HAVEBSTR(char *key)
 321 {
 322         void *U;
 323
 324         if ((WC->urlstrings != NULL) &&
 325             GetHash(WC->urlstrings, key, strlen(key), &U))
 326                 return (StrLength(((urlcontent *)U)->url_data) != 0);
 327         else
 328                 return (0);
 329 }
 330
 331
 332 int YesBstr(char *key, size_t keylen)
 333 {
 334         void *U;
 335
 336         if ((WC->urlstrings != NULL) &&
 337             GetHash(WC->urlstrings, key, keylen, &U))
 338                 return strcmp( ChrPtr(((urlcontent *)U)->url_data), "yes") == 0;
 339         else
 340                 return (0);
 341 }
 342
 343 int YESBSTR(char *key)
 344 {
 345         void *U;
 346
 347         if ((WC->urlstrings != NULL) &&
 348             GetHash(WC->urlstrings, key, strlen(key), &U))
 349                 return strcmp( ChrPtr(((urlcontent *)U)->url_data), "yes") == 0;
 350         else
 351                 return (0);
 352 }
 353
 354 /*
 355  * web-printing funcion. uses our vsnprintf wrapper
 356  */
 357 void wprintf(const char *format,...)
 358 {
 359         struct wcsession *WCC = WC;
 360         va_list arg_ptr;
 361
 362         if (WCC->WBuf == NULL)
 363                 WCC->WBuf = NewStrBuf();
 364
 365         va_start(arg_ptr, format);
 366         StrBufVAppendPrintf(WCC->WBuf, format, arg_ptr);
 367         va_end(arg_ptr);
 368
 369 ///     if (StrLength(WCC-WBuf) > 2048)
 370                 ///client_write(wbuf, strlen(wbuf));
 371 }
 372
 373 /*
 374  * http-header-printing funcion. uses our vsnprintf wrapper
 375  */
 376 void hprintf(const char *format,...)
 377 {
 378         struct wcsession *WCC = WC;
 379         va_list arg_ptr;
 380
 381         va_start(arg_ptr, format);
 382         StrBufVAppendPrintf(WCC->HBuf, format, arg_ptr);
 383         va_end(arg_ptr);
 384
 385 ///     if (StrLength(WCC-WBuf) > 2048)
 386                 ///client_write(wbuf, strlen(wbuf));
 387 }
 388
 389
 390 /*
 391  * wrap up an HTTP session, closes tags, etc.
 392  *
 393  * print_standard_html_footer should be set to:
 394  * 0 to transmit only,
 395  * 1 to append the main menu and closing tags,
 396  * 2 to append the closing tags only.
 397  */
 398 void wDumpContent(int print_standard_html_footer)
 399 {
 400         if (print_standard_html_footer) {
 401                 wprintf("</div>\n");    /* end of "text" div */
 402                 do_template("trailing", NULL);
 403         }
 404
 405         /* If we've been saving it all up for one big output burst,
 406          * go ahead and do that now.
 407          */
 408         end_burst();
 409 }
 410
 411
 412
 413 void escputs1(char *strbuf, int nbsp, int nolinebreaks)
 414 {
 415         StrEscAppend(WC->WBuf, NULL, strbuf, nbsp, nolinebreaks);
 416 }
 417
 418 void StrEscputs1(const StrBuf *strbuf, int nbsp, int nolinebreaks)
 419 {
 420         StrEscAppend(WC->WBuf, strbuf, NULL, nbsp, nolinebreaks);
 421 }
 422
 423 /*
 424  * static wrapper for ecsputs1
 425  */
 426 void escputs(char *strbuf)
 427 {
 428         escputs1(strbuf, 0, 0);
 429 }
 430
 431
 432 /*
 433  * static wrapper for ecsputs1
 434  */
 435 void StrEscPuts(const StrBuf *strbuf)
 436 {
 437         StrEscputs1(strbuf, 0, 0);
 438 }
 439
 440
 441 /*
 442  * urlescape buffer and print it to the client
 443  */
 444 void urlescputs(const char *strbuf)
 445 {
 446         StrBufUrlescAppend(WC->WBuf, NULL, strbuf);
 447 }
 448
 449 /*
 450  * urlescape buffer and print it to the client
 451  */
 452 void UrlescPutStrBuf(const StrBuf *strbuf)
 453 {
 454         StrBufUrlescAppend(WC->WBuf, strbuf, NULL);
 455 }
 456
 457 /**
 458  * urlescape buffer and print it as header
 459  */
 460 void hurlescputs(const char *strbuf)
 461 {
 462         StrBufUrlescAppend(WC->HBuf, NULL, strbuf);
 463 }
 464
 465
 466 /*
 467  * Copy a string, escaping characters for JavaScript strings.
 468  */
 469 void jsesc(char *target, size_t tlen, char *strbuf)
 470 {
 471         int len;
 472         char *tend;
 473         char *send;
 474         char *tptr;
 475         char *sptr;
 476
 477         target[0]='\0';
 478         len = strlen (strbuf);
 479         send = strbuf + len;
 480         tend = target + tlen;
 481         sptr = strbuf;
 482         tptr = target;
 483
 484         while (!IsEmptyStr(sptr) &&
 485                (sptr < send) &&
 486                (tptr < tend)) {
 487
 488                 if (*sptr == '<')
 489                         *tptr = '[';
 490                 else if (*sptr == '>')
 491                         *tptr = ']';
 492                 else if (*sptr == '\'') {
 493                         if (tend - tptr < 3)
 494                                 return;
 495                         *(tptr++) = '\\';
 496                         *tptr = '\'';
 497                 }
 498                 else if (*sptr == '"') {
 499                         if (tend - tptr < 8)
 500                                 return;
 501                         *(tptr++) = '&';
 502                         *(tptr++) = 'q';
 503                         *(tptr++) = 'u';
 504                         *(tptr++) = 'o';
 505                         *(tptr++) = 't';
 506                         *tptr = ';';
 507                 }
 508                 else if (*sptr == '&') {
 509                         if (tend - tptr < 7)
 510                                 return;
 511                         *(tptr++) = '&';
 512                         *(tptr++) = 'a';
 513                         *(tptr++) = 'm';
 514                         *(tptr++) = 'p';
 515                         *tptr = ';';
 516                 } else {
 517                         *tptr = *sptr;
 518                 }
 519                 tptr++; sptr++;
 520         }
 521         *tptr = '\0';
 522 }
 523
 524 /*
 525  * escape and print javascript
 526  */
 527 void jsescputs(char *strbuf)
 528 {
 529         char outbuf[SIZ];
 530
 531         jsesc(outbuf, SIZ, strbuf);
 532         wprintf("%s", outbuf);
 533 }
 534
 535 /*
 536  * Copy a string, escaping characters for message text hold
 537  */
 538 void msgesc(char *target, size_t tlen, char *strbuf)
 539 {
 540         int len;
 541         char *tend;
 542         char *send;
 543         char *tptr;
 544         char *sptr;
 545
 546         target[0]='\0';
 547         len = strlen (strbuf);
 548         send = strbuf + len;
 549         tend = target + tlen;
 550         sptr = strbuf;
 551         tptr = target;
 552
 553         while (!IsEmptyStr(sptr) &&
 554                (sptr < send) &&
 555                (tptr < tend)) {
 556
 557                 if (*sptr == '\n')
 558                         *tptr = ' ';
 559                 else if (*sptr == '\r')
 560                         *tptr = ' ';
 561                 else if (*sptr == '\'') {
 562                         if (tend - tptr < 8)
 563                                 return;
 564                         *(tptr++) = '&';
 565                         *(tptr++) = '#';
 566                         *(tptr++) = '3';
 567                         *(tptr++) = '9';
 568                         *tptr = ';';
 569                 } else {
 570                         *tptr = *sptr;
 571                 }
 572                 tptr++; sptr++;
 573         }
 574         *tptr = '\0';
 575 }
 576
 577 /*
 578  * print a string to the client after cleaning it with msgesc() and stresc()
 579  */
 580 void msgescputs1( char *strbuf)
 581 {
 582         char *outbuf;
 583         char *outbuf2;
 584         int buflen;
 585
 586         if (strbuf == NULL) return;
 587         buflen = 3 * strlen(strbuf) + SIZ;
 588         outbuf = malloc( buflen);
 589         outbuf2 = malloc( buflen);
 590         msgesc(outbuf, buflen, strbuf);
 591         stresc(outbuf2, buflen, outbuf, 0, 0);
 592         wprintf("%s", outbuf2);
 593         free(outbuf);
 594         free(outbuf2);
 595 }
 596
 597 /*
 598  * print a string to the client after cleaning it with msgesc()
 599  */
 600 void msgescputs(char *strbuf) {
 601         char *outbuf;
 602         size_t len;
 603
 604         if (strbuf == NULL) return;
 605         len =  (3 * strlen(strbuf)) + SIZ;
 606         outbuf = malloc(len);
 607         msgesc(outbuf, len, strbuf);
 608         wprintf("%s", outbuf);
 609         free(outbuf);
 610 }
 611
 612
 613
 614
 615 /*
 616  * Output HTTP headers and leading HTML for a page
 617  */
 618 void output_headers(    int do_httpheaders,     /* 1 = output HTTP headers                          */
 619                         int do_htmlhead,        /* 1 = output HTML <head> section and <body> opener */
 620
 621                         int do_room_banner,     /* 0=no, 1=yes,
 622                                                  * 2 = I'm going to embed my own, so don't open the
 623                                                  *     <div id="content"> either.
 624                                                  */
 625
 626                         int unset_cookies,      /* 1 = session is terminating, so unset the cookies */
 627                         int suppress_check,     /* 1 = suppress check for instant messages          */
 628                         int cache               /* 1 = allow browser to cache this page             */
 629 ) {
 630         char cookie[1024];
 631         char httpnow[128];
 632
 633         hprintf("HTTP/1.1 200 OK\n");
 634         http_datestring(httpnow, sizeof httpnow, time(NULL));
 635
 636         if (do_httpheaders) {
 637                 hprintf("Content-type: text/html; charset=utf-8\r\n"
 638                         "Server: %s / %s\n"
 639                         "Connection: close\r\n",
 640                         PACKAGE_STRING, serv_info.serv_software
 641                 );
 642         }
 643
 644         if (cache) {
 645                 char httpTomorow[128];
 646
 647                 http_datestring(httpTomorow, sizeof httpTomorow,
 648                                 time(NULL) + 60 * 60 * 24 * 2);
 649
 650                 hprintf("Pragma: public\r\n"
 651                         "Cache-Control: max-age=3600, must-revalidate\r\n"
 652                         "Last-modified: %s\r\n"
 653                         "Expires: %s\r\n",
 654                         httpnow,
 655                         httpTomorow
 656                 );
 657         }
 658         else {
 659                 hprintf("Pragma: no-cache\r\n"
 660                         "Cache-Control: no-store\r\n"
 661                         "Expires: -1\r\n"
 662                 );
 663         }
 664
 665         stuff_to_cookie(cookie, 1024, WC->wc_session, WC->wc_username,
 666                         WC->wc_password, WC->wc_roomname);
 667
 668         if (unset_cookies) {
 669                 hprintf("Set-cookie: webcit=%s; path=/\r\n", unset);
 670         } else {
 671                 hprintf("Set-cookie: webcit=%s; path=/\r\n", cookie);
 672                 if (server_cookie != NULL) {
 673                         hprintf("%s\n", server_cookie);
 674                 }
 675         }
 676
 677         if (do_htmlhead) {
 678                 begin_burst();
 679                 if (!access("static.local/webcit.css", R_OK)) {
 680                         svprintf(HKEY("CSSLOCAL"), WCS_STRING,
 681                            "<link href=\"static.local/webcit.css\" rel=\"stylesheet\" type=\"text/css\">"
 682                         );
 683                 }
 684                 do_template("head", NULL);
 685         }
 686
 687         /* ICONBAR */
 688         if (do_htmlhead) {
 689
 690
 691                 /* check for ImportantMessages (these display in a div overlaying the main screen) */
 692                 if (!IsEmptyStr(WC->ImportantMessage)) {
 693                         wprintf("<div id=\"important_message\">\n"
 694                                 "<span class=\"imsg\">");
 695                         escputs(WC->ImportantMessage);
 696                         wprintf("</span><br />\n"
 697                                 "</div>\n"
 698                                 "<script type=\"text/javascript\">\n"
 699                                 "        setTimeout('hide_imsg_popup()', 5000); \n"
 700                                 "</script>\n");
 701                         WC->ImportantMessage[0] = 0;
 702                 }
 703
 704                 if ( (WC->logged_in) && (!unset_cookies) ) {
 705                         wprintf("<div id=\"iconbar\">");
 706                         do_selected_iconbar();
 707                         /** check for instant messages (these display in a new window) */
 708                         page_popup();
 709                         wprintf("</div>");
 710                 }
 711
 712                 if (do_room_banner == 1) {
 713                         wprintf("<div id=\"banner\">\n");
 714                         embed_room_banner(NULL, navbar_default);
 715                         wprintf("</div>\n");
 716                 }
 717         }
 718
 719         if (do_room_banner == 1) {
 720                 wprintf("<div id=\"content\">\n");
 721         }
 722 }
 723
 724
 725 /*
 726  * Generic function to do an HTTP redirect.  Easy and fun.
 727  */
 728 void http_redirect(const char *whichpage) {
 729         hprintf("HTTP/1.1 302 Moved Temporarily\n");
 730         hprintf("Location: %s\r\n", whichpage);
 731         hprintf("URI: %s\r\n", whichpage);
 732         hprintf("Content-type: text/html; charset=utf-8\r\n");
 733         wprintf("<html><body>");
 734         wprintf("Go <a href=\"%s\">here</A>.", whichpage);
 735         wprintf("</body></html>\n");
 736         end_burst();
 737 }
 738
 739
 740
 741 /*
 742  * Output a piece of content to the web browser using conformant HTTP and MIME semantics
 743  */
 744 void http_transmit_thing(const char *content_type,
 745                          int is_static) {
 746
 747         output_headers(0, 0, 0, 0, 0, is_static);
 748
 749         hprintf("Content-type: %s\r\n"
 750                 "Server: %s\r\n"
 751                 "Connection: close\r\n",
 752                 content_type,
 753                 PACKAGE_STRING);
 754
 755         end_burst();
 756 }
 757
 758 /*
 759  * print menu box like used in the floor view or admin interface.
 760  * This function takes pair of strings as va_args,
 761  * Title        Title string of the box
 762  * Class        CSS Class for the box
 763  * nLines       How many string pairs should we print? (URL, UrlText)
 764  * ...          Pairs of URL Strings and their Names
 765  */
 766 void print_menu_box(char* Title, char *Class, int nLines, ...)
 767 {
 768         va_list arg_list;
 769         long i;
 770
 771         svput("BOXTITLE", WCS_STRING, Title);
 772         do_template("beginbox", NULL);
 773
 774         wprintf("<ul class=\"%s\">", Class);
 775
 776         va_start(arg_list, nLines);
 777         for (i = 0; i < nLines; ++i)
 778         {
 779                 wprintf("<li><a href=\"%s\">", va_arg(arg_list, char *));
 780                 wprintf((char *) va_arg(arg_list, char *));
 781                 wprintf("</a></li>\n");
 782         }
 783         va_end (arg_list);
 784
 785         wprintf("</a></li>\n");
 786
 787         wprintf("</ul>");
 788
 789         do_template("endbox", NULL);
 790 }
 791
 792
 793 /*
 794  * dump out static pages from disk
 795  */
 796 void output_static(char *what)
 797 {
 798         int fd;
 799         struct stat statbuf;
 800         off_t bytes;
 801         off_t count = 0;
 802         const char *content_type;
 803         int len;
 804         const char *Err;
 805
 806         fd = open(what, O_RDONLY);
 807         if (fd <= 0) {
 808                 lprintf(9, "output_static('%s')  -- NOT FOUND --\n", what);
 809                 hprintf("HTTP/1.1 404 %s\r\n", strerror(errno));
 810                 hprintf("Content-Type: text/plain\r\n");
 811                 wprintf("Cannot open %s: %s\r\n", what, strerror(errno));
 812                 end_burst();
 813         } else {
 814                 len = strlen (what);
 815                 content_type = GuessMimeByFilename(what, len);
 816
 817                 if (fstat(fd, &statbuf) == -1) {
 818                         lprintf(9, "output_static('%s')  -- FSTAT FAILED --\n", what);
 819                         hprintf("HTTP/1.1 404 %s\r\n", strerror(errno));
 820                         hprintf("Content-Type: text/plain\r\n");
 821                         wprintf("Cannot fstat %s: %s\n", what, strerror(errno));
 822                         end_burst();
 823                         return;
 824                 }
 825
 826                 count = 0;
 827                 bytes = statbuf.st_size;
 828
 829                 if (StrBufReadBLOB(WC->WBuf, &fd, 1, bytes, &Err) < 0)
 830                 {
 831                         if (fd > 0) close(fd);
 832                         lprintf(9, "output_static('%s')  -- FREAD FAILED (%s) --\n", what, strerror(errno));
 833                                 hprintf("HTTP/1.1 500 internal server error \r\n");
 834                                 hprintf("Content-Type: text/plain\r\n");
 835                                 end_burst();
 836                                 return;
 837                 }
 838
 839
 840                 close(fd);
 841                 lprintf(9, "output_static('%s')  %s\n", what, content_type);
 842                 http_transmit_thing(content_type, 1);
 843         }
 844         if (yesbstr("force_close_session")) {
 845                 end_webcit_session();
 846         }
 847 }
 848
 849 /*
 850  * When the browser requests an image file from the Citadel server,
 851  * this function is called to transmit it.
 852  */
 853 void output_image()
 854 {
 855         struct wcsession *WCC = WC;
 856         char buf[SIZ];
 857         off_t bytes;
 858         const char *MimeType;
 859
 860         serv_printf("OIMG %s|%s", bstr("name"), bstr("parm"));
 861         serv_getln(buf, sizeof buf);
 862         if (buf[0] == '2') {
 863                 bytes = extract_long(&buf[4], 0);
 864
 865                 /** Read it from the server */
 866
 867                 if (read_server_binary(WCC->WBuf, bytes) > 0) {
 868                         serv_puts("CLOS");
 869                         serv_getln(buf, sizeof buf);
 870
 871                         MimeType = GuessMimeType (ChrPtr(WCC->WBuf), StrLength(WCC->WBuf));
 872                         /** Write it to the browser */
 873                         if (!IsEmptyStr(MimeType))
 874                         {
 875                                 http_transmit_thing(MimeType, 0);
 876                                 return;
 877                         }
 878                 }
 879                 /* hm... unknown mimetype? fallback to blank gif */
 880         }
 881
 882
 883         /*
 884          * Instead of an ugly 404, send a 1x1 transparent GIF
 885          * when there's no such image on the server.
 886          */
 887         char blank_gif[SIZ];
 888         snprintf (blank_gif, SIZ, "%s%s", static_dirs[0], "/blank.gif");
 889         output_static(blank_gif);
 890 }
 891
 892 /*
 893  * Extract an embedded photo from a vCard for display on the client
 894  */
 895 void display_vcard_photo_img(void)
 896 {
 897         long msgnum = 0L;
 898         char *vcard;
 899         struct vCard *v;
 900         char *photosrc;
 901         const char *contentType;
 902         struct wcsession *WCC = WC;
 903
 904         msgnum = StrTol(WCC->UrlFragment1);
 905
 906         vcard = load_mimepart(msgnum,"1");
 907         v = vcard_load(vcard);
 908
 909         photosrc = vcard_get_prop(v, "PHOTO", 1,0,0);
 910         FlushStrBuf(WCC->WBuf);
 911         StrBufAppendBufPlain(WCC->WBuf, photosrc, -1, 0);
 912         if (StrBufDecodeBase64(WCC->WBuf) <= 0) {
 913                 FlushStrBuf(WCC->WBuf);
 914
 915                 hprintf("HTTP/1.1 500 %s\n","Unable to get photo");
 916                 output_headers(0, 0, 0, 0, 0, 0);
 917                 hprintf("Content-Type: text/plain\r\n");
 918                 wprintf(_("Could Not decode vcard photo\n"));
 919                 end_burst();
 920                 return;
 921         }
 922         contentType = GuessMimeType(ChrPtr(WCC->WBuf), StrLength(WCC->WBuf));
 923         http_transmit_thing(contentType, 0);
 924         free(v);
 925         free(photosrc);
 926 }
 927
 928 /*
 929  * Generic function to output an arbitrary MIME part from an arbitrary
 930  * message number on the server.
 931  *
 932  * msgnum               Number of the item on the citadel server
 933  * partnum              The MIME part to be output
 934  * force_download       Nonzero to force set the Content-Type: header to "application/octet-stream"
 935  */
 936 void mimepart(const char *msgnum, const char *partnum, int force_download)
 937 {
 938         char buf[256];
 939         off_t bytes;
 940         char content_type[256];
 941         char *content = NULL;
 942
 943         serv_printf("OPNA %s|%s", msgnum, partnum);
 944         serv_getln(buf, sizeof buf);
 945         if (buf[0] == '2') {
 946                 bytes = extract_long(&buf[4], 0);
 947                 content = malloc(bytes + 2);
 948                 if (force_download) {
 949                         strcpy(content_type, "application/octet-stream");
 950                 }
 951                 else {
 952                         extract_token(content_type, &buf[4], 3, '|', sizeof content_type);
 953                 }
 954                 output_headers(0, 0, 0, 0, 0, 0);
 955
 956                 read_server_binary(WC->WBuf, bytes);
 957                 serv_puts("CLOS");
 958                 serv_getln(buf, sizeof buf);
 959                 http_transmit_thing(content_type, 0);
 960         } else {
 961                 hprintf("HTTP/1.1 404 %s\n", &buf[4]);
 962                 output_headers(0, 0, 0, 0, 0, 0);
 963                 hprintf("Content-Type: text/plain\r\n");
 964                 wprintf(_("An error occurred while retrieving this part: %s\n"), &buf[4]);
 965                 end_burst();
 966         }
 967
 968 }
 969
 970
 971 /*
 972  * Read any MIME part of a message, from the server, into memory.
 973  */
 974 char *load_mimepart(long msgnum, char *partnum)
 975 {
 976         char buf[SIZ];
 977         off_t bytes;
 978         char content_type[SIZ];
 979         char *content;
 980
 981         serv_printf("DLAT %ld|%s", msgnum, partnum);
 982         serv_getln(buf, sizeof buf);
 983         if (buf[0] == '6') {
 984                 bytes = extract_long(&buf[4], 0);
 985                 extract_token(content_type, &buf[4], 3, '|', sizeof content_type);
 986
 987                 content = malloc(bytes + 2);
 988                 serv_read(content, bytes);
 989
 990                 content[bytes] = 0;     /* null terminate for good measure */
 991                 return(content);
 992         }
 993         else {
 994                 return(NULL);
 995         }
 996
 997 }
 998
 999
1000 /*
1001  * Convenience functions to display a page containing only a string
1002  *
1003  * titlebarcolor        color of the titlebar of the frame
1004  * titlebarmsg          text to display in the title bar
1005  * messagetext          body of the box
1006  */
1007 void convenience_page(char *titlebarcolor, char *titlebarmsg, char *messagetext)
1008 {
1009         hprintf("HTTP/1.1 200 OK\n");
1010         output_headers(1, 1, 2, 0, 0, 0);
1011         wprintf("<div id=\"banner\">\n");
1012         wprintf("<table width=100%% border=0 bgcolor=\"#%s\"><tr><td>", titlebarcolor);
1013         wprintf("<span class=\"titlebar\">%s</span>\n", titlebarmsg);
1014         wprintf("</td></tr></table>\n");
1015         wprintf("</div>\n<div id=\"content\">\n");
1016         escputs(messagetext);
1017
1018         wprintf("<hr />\n");
1019         wDumpContent(1);
1020 }
1021
1022
1023 /*
1024  * Display a blank page.
1025  */
1026 void blank_page(void) {
1027         output_headers(1, 1, 0, 0, 0, 0);
1028         wDumpContent(2);
1029 }
1030
1031
1032 /*
1033  * A template has been requested
1034  */
1035 void url_do_template(void) {
1036         const StrBuf *Tmpl = sbstr("template");
1037         begin_burst();
1038         DoTemplate(ChrPtr(Tmpl), StrLength(Tmpl), NULL, NULL);
1039         end_burst();
1040 }
1041
1042
1043
1044 /*
1045  * Offer to make any page the user's "start page."
1046  */
1047 void offer_start_page(void) {
1048         wprintf("<a href=\"change_start_page?startpage=");
1049         urlescputs(WC->this_page);
1050         wprintf("\">");
1051         wprintf(_("Make this my start page"));
1052         wprintf("</a>");
1053 #ifdef TECH_PREVIEW
1054         wprintf("<br/><a href=\"rss?room=");
1055         urlescputs(WC->wc_roomname);
1056         wprintf("\" title=\"RSS 2.0 feed for ");
1057         escputs(WC->wc_roomname);
1058         wprintf("\"><img alt=\"RSS\" border=\"0\" src=\"static/xml_button.gif\"/></a>\n");
1059 #endif
1060 }
1061
1062
1063 /*
1064  * Change the user's start page
1065  */
1066 void change_start_page(void) {
1067
1068         if (bstr("startpage") == NULL) {
1069                 safestrncpy(WC->ImportantMessage,
1070                         _("You no longer have a start page selected."),
1071                         sizeof WC->ImportantMessage);
1072                 display_main_menu();
1073                 return;
1074         }
1075
1076         set_preference("startpage", NewStrBufPlain(bstr("startpage"), -1), 1);
1077
1078         output_headers(1, 1, 0, 0, 0, 0);
1079         do_template("newstartpage", NULL);
1080         wDumpContent(1);
1081 }
1082
1083
1084
1085 /*
1086  * convenience function to indicate success
1087  */
1088 void display_success(char *successmessage)
1089 {
1090         convenience_page("007700", "OK", successmessage);
1091 }
1092
1093
1094 /*
1095  * Authorization required page
1096  * This is probably temporary and should be revisited
1097  */
1098 void authorization_required(const char *message)
1099 {
1100         hprintf("HTTP/1.1 401 Authorization Required\r\n");
1101         hprintf("WWW-Authenticate: Basic realm=\"%s\"\r\n", serv_info.serv_humannode);
1102         hprintf("Content-Type: text/html\r\n");
1103         wprintf("<h1>");
1104         wprintf(_("Authorization Required"));
1105         wprintf("</h1>\r\n");
1106         wprintf(_("The resource you requested requires a valid username and password. "
1107                 "You could not be logged in: %s\n"), message);
1108         wDumpContent(0);
1109
1110 }
1111
1112 /*
1113  * This function is called by the MIME parser to handle data uploaded by
1114  * the browser.  Form data, uploaded files, and the data from HTTP PUT
1115  * operations (such as those found in GroupDAV) all arrive this way.
1116  *
1117  * name         Name of the item being uploaded
1118  * filename     Filename of the item being uploaded
1119  * partnum      MIME part identifier (not needed)
1120  * disp         MIME content disposition (not needed)
1121  * content      The actual data
1122  * cbtype       MIME content-type
1123  * cbcharset    Character set
1124  * length       Content length
1125  * encoding     MIME encoding type (not needed)
1126  * userdata     Not used here
1127  */
1128 void upload_handler(char *name, char *filename, char *partnum, char *disp,
1129                         void *content, char *cbtype, char *cbcharset,
1130                         size_t length, char *encoding, void *userdata)
1131 {
1132         urlcontent *u;
1133 #ifdef DEBUG_URLSTRINGS
1134         lprintf(9, "upload_handler() name=%s, type=%s, len=%d\n", name, cbtype, length);
1135 #endif
1136         if (WC->urlstrings == NULL)
1137                 WC->urlstrings = NewHash(1, NULL);
1138
1139         /* Form fields */
1140         if ( (length > 0) && (IsEmptyStr(cbtype)) ) {
1141                 u = (urlcontent *) malloc(sizeof(urlcontent));
1142
1143                 safestrncpy(u->url_key, name, sizeof(u->url_key));
1144                 u->url_data = NewStrBufPlain(content, length);
1145
1146                 Put(WC->urlstrings, u->url_key, strlen(u->url_key), u, free_url);
1147 #ifdef DEBUG_URLSTRINGS
1148                 lprintf(9, "Key: <%s> len: [%ld] Data: <%s>\n", u->url_key, u->url_data_size, u->url_data);
1149 #endif
1150         }
1151
1152         /** Uploaded files */
1153         if ( (length > 0) && (!IsEmptyStr(cbtype)) ) {
1154                 WC->upload = malloc(length);
1155                 if (WC->upload != NULL) {
1156                         WC->upload_length = length;
1157                         safestrncpy(WC->upload_filename, filename,
1158                                         sizeof(WC->upload_filename));
1159                         safestrncpy(WC->upload_content_type, cbtype,
1160                                         sizeof(WC->upload_content_type));
1161                         memcpy(WC->upload, content, length);
1162                 }
1163                 else {
1164                         lprintf(3, "malloc() failed: %s\n", strerror(errno));
1165                 }
1166         }
1167
1168 }
1169
1170 /*
1171  * Convenience functions to wrap around asynchronous ajax responses
1172  */
1173 void begin_ajax_response(void) {
1174         output_headers(0, 0, 0, 0, 0, 0);
1175
1176         hprintf("Content-type: text/html; charset=UTF-8\r\n"
1177                 "Server: %s\r\n"
1178                 "Connection: close\r\n"
1179                 "Pragma: no-cache\r\n"
1180                 "Cache-Control: no-cache\r\n"
1181                 "Expires: -1\r\n"
1182                 ,
1183                 PACKAGE_STRING);
1184         begin_burst();
1185 }
1186
1187 /*
1188  * print ajax response footer
1189  */
1190 void end_ajax_response(void) {
1191         ///hprintf("\r\n");///// todo: is this right?
1192         wDumpContent(0);
1193 }
1194
1195 /*
1196  * Wraps a Citadel server command in an AJAX transaction.
1197  */
1198 void ajax_servcmd(void)
1199 {
1200         char buf[1024];
1201         char gcontent[1024];
1202         char *junk;
1203         size_t len;
1204
1205         begin_ajax_response();
1206
1207         serv_printf("%s", bstr("g_cmd"));
1208         serv_getln(buf, sizeof buf);
1209         wprintf("%s\n", buf);
1210
1211         if (buf[0] == '8') {
1212                 serv_printf("\n\n000");
1213         }
1214         if ((buf[0] == '1') || (buf[0] == '8')) {
1215                 while (serv_getln(gcontent, sizeof gcontent), strcmp(gcontent, "000")) {
1216                         wprintf("%s\n", gcontent);
1217                 }
1218                 wprintf("000");
1219         }
1220         if (buf[0] == '4') {
1221                 text_to_server(bstr("g_input"));
1222                 serv_puts("000");
1223         }
1224         if (buf[0] == '6') {
1225                 len = atol(&buf[4]);
1226                 junk = malloc(len);
1227                 serv_read(junk, len);
1228                 free(junk);
1229         }
1230         if (buf[0] == '7') {
1231                 len = atol(&buf[4]);
1232                 junk = malloc(len);
1233                 memset(junk, 0, len);
1234                 serv_write(junk, len);
1235                 free(junk);
1236         }
1237
1238         end_ajax_response();
1239
1240         /*
1241          * This is kind of an ugly hack, but this is the only place it can go.
1242          * If the command was GEXP, then the instant messenger window must be
1243          * running, so reset the "last_pager_check" watchdog timer so
1244          * that page_popup() doesn't try to open it a second time.
1245          */
1246         if (!strncasecmp(bstr("g_cmd"), "GEXP", 4)) {
1247                 WC->last_pager_check = time(NULL);
1248         }
1249 }
1250
1251
1252 /*
1253  * Helper function for the asynchronous check to see if we need
1254  * to open the instant messenger window.
1255  */
1256 void seconds_since_last_gexp(void)
1257 {
1258         char buf[256];
1259
1260         begin_ajax_response();
1261         if ( (time(NULL) - WC->last_pager_check) < 30) {
1262                 wprintf("NO\n");
1263         }
1264         else {
1265                 serv_puts("NOOP");
1266                 serv_getln(buf, sizeof buf);
1267                 if (buf[3] == '*') {
1268                         wprintf("YES");
1269                 }
1270                 else {
1271                         wprintf("NO");
1272                 }
1273         }
1274         end_ajax_response();
1275 }
1276
1277 /**
1278  * \brief Detects a 'mobile' user agent
1279  */
1280 int is_mobile_ua(char *user_agent) {
1281       if (strstr(user_agent,"iPhone OS") != NULL) {
1282         return 1;
1283       } else if (strstr(user_agent,"Windows CE") != NULL) {
1284         return 1;
1285       } else if (strstr(user_agent,"SymbianOS") != NULL) {
1286         return 1;
1287       } else if (strstr(user_agent, "Opera Mobi") != NULL) {
1288         return 1;
1289       } else if (strstr(user_agent, "Firefox/2.0.0 Opera 9.51 Beta") != NULL) {
1290                  // For some reason a new install of Opera 9.51beta decided to spoof.
1291           return 1;
1292           }
1293       return 0;
1294 }
1295
1296
1297 /*
1298  * Entry point for WebCit transaction
1299  */
1300 void session_loop(struct httprequest *req)
1301 {
1302         char cmd[1024];
1303         char action[1024];
1304         char arg[8][128];
1305         size_t sizes[10];
1306         char *index[10];
1307         char buf[SIZ];
1308         char request_method[128];
1309         char pathname[1024];
1310         int a, b, nBackDots, nEmpty;
1311         int ContentLength = 0;
1312         char ContentType[512];
1313         char *content = NULL;
1314         char *content_end = NULL;
1315         struct httprequest *hptr;
1316         char browser_host[256];
1317         char user_agent[256];
1318         int body_start = 0;
1319         int is_static = 0;
1320         int n_static = 0;
1321         int len = 0;
1322         /*
1323          * We stuff these with the values coming from the client cookies,
1324          * so we can use them to reconnect a timed out session if we have to.
1325          */
1326         char c_username[SIZ];
1327         char c_password[SIZ];
1328         char c_roomname[SIZ];
1329         char c_httpauth_string[SIZ];
1330         char c_httpauth_user[SIZ];
1331         char c_httpauth_pass[SIZ];
1332         char cookie[SIZ];
1333         struct wcsession *WCC;
1334
1335         safestrncpy(c_username, "", sizeof c_username);
1336         safestrncpy(c_password, "", sizeof c_password);
1337         safestrncpy(c_roomname, "", sizeof c_roomname);
1338         safestrncpy(c_httpauth_string, "", sizeof c_httpauth_string);
1339         safestrncpy(c_httpauth_user, DEFAULT_HTTPAUTH_USER, sizeof c_httpauth_user);
1340         safestrncpy(c_httpauth_pass, DEFAULT_HTTPAUTH_PASS, sizeof c_httpauth_pass);
1341         strcpy(browser_host, "");
1342
1343         WCC= WC;
1344         if (WCC->WBuf == NULL)
1345                 WC->WBuf = NewStrBufPlain(NULL, 32768);
1346         FlushStrBuf(WCC->WBuf);
1347
1348         if (WCC->HBuf == NULL)
1349                 WCC->HBuf = NewStrBuf();
1350         FlushStrBuf(WCC->HBuf);
1351
1352         WCC->upload_length = 0;
1353         WCC->upload = NULL;
1354         WCC->is_mobile = 0;
1355
1356         hptr = req;
1357         if (hptr == NULL) return;
1358
1359         safestrncpy(cmd, hptr->line, sizeof cmd);
1360         hptr = hptr->next;
1361         extract_token(request_method, cmd, 0, ' ', sizeof request_method);
1362         extract_token(pathname, cmd, 1, ' ', sizeof pathname);
1363
1364         /** Figure out the action */
1365         index[0] = action;
1366         sizes[0] = sizeof action;
1367         for (a=1; a<9; a++)
1368         {
1369                 index[a] = arg[a-1];
1370                 sizes[a] = sizeof arg[a-1];
1371         }
1372 ////    index[9] = &foo; todo
1373         nBackDots = 0;
1374         nEmpty = 0;
1375         for ( a = 0; a < 9; ++a)
1376         {
1377                 extract_token(index[a], pathname, a + 1, '/', sizes[a]);
1378                 if (strstr(index[a], "?")) *strstr(index[a], "?") = 0;
1379                 if (strstr(index[a], "&")) *strstr(index[a], "&") = 0;
1380                 if (strstr(index[a], " ")) *strstr(index[a], " ") = 0;
1381                 if ((index[a][0] == '.') && (index[a][1] == '.'))
1382                         nBackDots++;
1383                 if (index[a][0] == '\0')
1384                         nEmpty++;
1385         }
1386
1387         while (hptr != NULL) {
1388                 safestrncpy(buf, hptr->line, sizeof buf);
1389                 /* lprintf(9, "HTTP HEADER: %s\n", buf); */
1390                 hptr = hptr->next;
1391
1392                 if (!strncasecmp(buf, "Cookie: webcit=", 15)) {
1393                         safestrncpy(cookie, &buf[15], sizeof cookie);
1394                         cookie_to_stuff(cookie, NULL,
1395                                         c_username, sizeof c_username,
1396                                         c_password, sizeof c_password,
1397                                         c_roomname, sizeof c_roomname);
1398                 }
1399                 else if (!strncasecmp(buf, "Authorization: Basic ", 21)) {
1400                         CtdlDecodeBase64(c_httpauth_string, &buf[21], strlen(&buf[21]));
1401                         extract_token(c_httpauth_user, c_httpauth_string, 0, ':', sizeof c_httpauth_user);
1402                         extract_token(c_httpauth_pass, c_httpauth_string, 1, ':', sizeof c_httpauth_pass);
1403                 }
1404                 else if (!strncasecmp(buf, "Content-length: ", 16)) {
1405                         ContentLength = atoi(&buf[16]);
1406                 }
1407                 else if (!strncasecmp(buf, "Content-type: ", 14)) {
1408                         safestrncpy(ContentType, &buf[14], sizeof ContentType);
1409                 }
1410                 else if (!strncasecmp(buf, "User-agent: ", 12)) {
1411                         safestrncpy(user_agent, &buf[12], sizeof user_agent);
1412                         #ifdef TECH_PREVIEW
1413                         if (is_mobile_ua(&buf[12])) {
1414                                 WCC->is_mobile = 1;
1415                         }
1416                         #endif
1417                 }
1418                 else if (!strncasecmp(buf, "X-Forwarded-Host: ", 18)) {
1419                         if (follow_xff) {
1420                                 safestrncpy(WCC->http_host, &buf[18], sizeof WCC->http_host);
1421                         }
1422                 }
1423                 else if (!strncasecmp(buf, "Host: ", 6)) {
1424                         if (IsEmptyStr(WCC->http_host)) {
1425                                 safestrncpy(WCC->http_host, &buf[6], sizeof WCC->http_host);
1426                         }
1427                 }
1428                 else if (!strncasecmp(buf, "X-Forwarded-For: ", 17)) {
1429                         safestrncpy(browser_host, &buf[17], sizeof browser_host);
1430                         while (num_tokens(browser_host, ',') > 1) {
1431                                 remove_token(browser_host, 0, ',');
1432                         }
1433                         striplt(browser_host);
1434                 }
1435         }
1436
1437         if (ContentLength > 0) {
1438                 int BuffSize;
1439
1440                 BuffSize = ContentLength + SIZ;
1441                 content = malloc(BuffSize);
1442                 memset(content, 0, BuffSize);
1443                 hprintf("Content-type: %s\n"
1444                         "Content-length: %d\n\n",
1445                         ContentType, ContentLength);
1446                 body_start = strlen(content);
1447
1448                 /** Read the entire input data at once. */
1449                 client_read(WCC->http_sock, &content[body_start], ContentLength);
1450
1451                 if (!strncasecmp(ContentType, "application/x-www-form-urlencoded", 33)) {
1452                         StrBuf *Content;
1453
1454                         Content = _NewConstStrBuf(&content[body_start],ContentLength);
1455                         addurls(Content);
1456                         FreeStrBuf(&Content);
1457                 } else if (!strncasecmp(ContentType, "multipart", 9)) {
1458                         content_end = content + ContentLength + body_start;
1459                         mime_parser(content, content_end, *upload_handler, NULL, NULL, NULL, 0);
1460                 }
1461         } else {
1462                 content = NULL;
1463         }
1464
1465         /* make a note of where we are in case the user wants to save it */
1466         safestrncpy(WCC->this_page, cmd, sizeof(WCC->this_page));
1467         remove_token(WCC->this_page, 2, ' ');
1468         remove_token(WCC->this_page, 0, ' ');
1469
1470         /* If there are variables in the URL, we must grab them now */
1471         len = strlen(cmd);
1472         for (a = 0; a < len; ++a) {
1473                 if ((cmd[a] == '?') || (cmd[a] == '&')) {
1474                         StrBuf *Params;
1475                         for (b = a; b < len; ++b) {
1476                                 if (isspace(cmd[b])){
1477                                         cmd[b] = 0;
1478                                         len = b - 1;
1479                                 }
1480                         }
1481                         //cmd[len - a] = '\0';
1482                         Params = _NewConstStrBuf(&cmd[a + 1], len - a);
1483                         addurls(Params);
1484                         cmd[a] = 0;
1485                         len = a - 1;
1486                 }
1487         }
1488
1489         /* If it's a "force 404" situation then display the error and bail. */
1490         if (!strcmp(action, "404")) {
1491                 hprintf("HTTP/1.1 404 Not found\r\n");
1492                 hprintf("Content-Type: text/plain\r\n");
1493                 wprintf("Not found\r\n");
1494                 end_burst();
1495                 goto SKIP_ALL_THIS_CRAP;
1496         }
1497
1498         /* Static content can be sent without connecting to Citadel. */
1499         is_static = 0;
1500         for (a=0; a<ndirs; ++a) {
1501                 if (!strcasecmp(action, (char*)static_content_dirs[a])) { /* map web to disk location */
1502                         is_static = 1;
1503                         n_static = a;
1504                 }
1505         }
1506         if (is_static) {
1507                 if (nBackDots < 2)
1508                 {
1509                         snprintf(buf, sizeof buf, "%s/%s/%s/%s/%s/%s/%s/%s",
1510                                  static_dirs[n_static],
1511                                  index[1], index[2], index[3], index[4], index[5], index[6], index[7]);
1512                         for (a=0; a<8; ++a) {
1513                                 if (buf[strlen(buf)-1] == '/') {
1514                                         buf[strlen(buf)-1] = 0;
1515                                 }
1516                         }
1517                         for (a = 0; a < strlen(buf); ++a) {
1518                                 if (isspace(buf[a])) {
1519                                         buf[a] = 0;
1520                                 }
1521                         }
1522                         output_static(buf);
1523                 }
1524                 else
1525                 {
1526                         lprintf(9, "Suspicious request. Ignoring.");
1527                         hprintf("HTTP/1.1 404 Security check failed\r\n");
1528                         hprintf("Content-Type: text/plain\r\n");
1529                         wprintf("You have sent a malformed or invalid request.\r\n");
1530                         end_burst();
1531                 }
1532                 goto SKIP_ALL_THIS_CRAP;        /* Don't try to connect */
1533         }
1534
1535         /* If the client sent a nonce that is incorrect, kill the request. */
1536         if (strlen(bstr("nonce")) > 0) {
1537                 lprintf(9, "Comparing supplied nonce %s to session nonce %ld\n",
1538                         bstr("nonce"), WCC->nonce);
1539                 if (ibstr("nonce") != WCC->nonce) {
1540                         lprintf(9, "Ignoring request with mismatched nonce.\n");
1541                         hprintf("HTTP/1.1 404 Security check failed\r\n");
1542                         hprintf("Content-Type: text/plain\r\n");
1543                         wprintf("Security check failed.\r\n");
1544                         end_burst();
1545                         goto SKIP_ALL_THIS_CRAP;
1546                 }
1547         }
1548
1549         /*
1550          * If we're not connected to a Citadel server, try to hook up the
1551          * connection now.
1552          */
1553         if (!WCC->connected) {
1554                 if (!strcasecmp(ctdlhost, "uds")) {
1555                         /* unix domain socket */
1556                         snprintf(buf, SIZ, "%s/citadel.socket", ctdlport);
1557                         WCC->serv_sock = uds_connectsock(buf);
1558                 }
1559                 else {
1560                         /* tcp socket */
1561                         WCC->serv_sock = tcp_connectsock(ctdlhost, ctdlport);
1562                 }
1563
1564                 if (WCC->serv_sock < 0) {
1565                         do_logout();
1566                         goto SKIP_ALL_THIS_CRAP;
1567                 }
1568                 else {
1569                         WCC->connected = 1;
1570                         serv_getln(buf, sizeof buf);    /** get the server welcome message */
1571
1572                         /**
1573                          * From what host is our user connecting?  Go with
1574                          * the host at the other end of the HTTP socket,
1575                          * unless we are following X-Forwarded-For: headers
1576                          * and such a header has already turned up something.
1577                          */
1578                         if ( (!follow_xff) || (strlen(browser_host) == 0) ) {
1579                                 locate_host(browser_host, WCC->http_sock);
1580                         }
1581
1582                         get_serv_info(browser_host, user_agent);
1583                         if (serv_info.serv_rev_level < MINIMUM_CIT_VERSION) {
1584                                 wprintf(_("You are connected to a Citadel "
1585                                         "server running Citadel %d.%02d. \n"
1586                                         "In order to run this version of WebCit "
1587                                         "you must also have Citadel %d.%02d or"
1588                                         " newer.\n\n\n"),
1589                                                 serv_info.serv_rev_level / 100,
1590                                                 serv_info.serv_rev_level % 100,
1591                                                 MINIMUM_CIT_VERSION / 100,
1592                                                 MINIMUM_CIT_VERSION % 100
1593                                         );
1594                                 end_webcit_session();
1595                                 goto SKIP_ALL_THIS_CRAP;
1596                         }
1597                 }
1598         }
1599 ////////todo: restorte language in this case
1600         /*
1601          * Functions which can be performed without logging in
1602          */
1603         if (!strcasecmp(action, "listsub")) {
1604                 do_listsub();
1605                 goto SKIP_ALL_THIS_CRAP;
1606         }
1607         if (!strcasecmp(action, "freebusy")) {
1608                 do_freebusy(cmd);
1609                 goto SKIP_ALL_THIS_CRAP;
1610         }
1611
1612         /*
1613          * If we're not logged in, but we have HTTP Authentication data,
1614          * try logging in to Citadel using that.
1615          */
1616         if ((!WCC->logged_in)
1617            && (strlen(c_httpauth_user) > 0)
1618            && (strlen(c_httpauth_pass) > 0)) {
1619                 serv_printf("USER %s", c_httpauth_user);
1620                 serv_getln(buf, sizeof buf);
1621                 if (buf[0] == '3') {
1622                         serv_printf("PASS %s", c_httpauth_pass);
1623                         serv_getln(buf, sizeof buf);
1624                         if (buf[0] == '2') {
1625                                 become_logged_in(c_httpauth_user,
1626                                                 c_httpauth_pass, buf);
1627                                 safestrncpy(WCC->httpauth_user, c_httpauth_user, sizeof WCC->httpauth_user);
1628                                 safestrncpy(WCC->httpauth_pass, c_httpauth_pass, sizeof WCC->httpauth_pass);
1629                         } else {
1630                                 /* Should only display when password is wrong */
1631                                 authorization_required(&buf[4]);
1632                                 goto SKIP_ALL_THIS_CRAP;
1633                         }
1634                 }
1635         }
1636
1637         /* This needs to run early */
1638 #ifdef TECH_PREVIEW
1639         if (!strcasecmp(action, "rss")) {
1640                 display_rss(bstr("room"), request_method);
1641                 goto SKIP_ALL_THIS_CRAP;
1642         }
1643 #endif
1644
1645         /*
1646          * The GroupDAV stuff relies on HTTP authentication instead of
1647          * our session's authentication.
1648          */
1649         if (!strncasecmp(action, "groupdav", 8)) {
1650                 groupdav_main(req, ContentType, /* do GroupDAV methods */
1651                         ContentLength, content+body_start);
1652                 if (!WCC->logged_in) {
1653                         WCC->killthis = 1;      /* If not logged in, don't */
1654                 }                               /* keep the session active */
1655                 goto SKIP_ALL_THIS_CRAP;
1656         }
1657
1658
1659         /*
1660          * Automatically send requests with any method other than GET or
1661          * POST to the GroupDAV code as well.
1662          */
1663         if ((strcasecmp(request_method, "GET")) && (strcasecmp(request_method, "POST"))) {
1664                 groupdav_main(req, ContentType, /** do GroupDAV methods */
1665                         ContentLength, content+body_start);
1666                 if (!WCC->logged_in) {
1667                         WCC->killthis = 1;      /** If not logged in, don't */
1668                 }                               /** keep the session active */
1669                 goto SKIP_ALL_THIS_CRAP;
1670         }
1671
1672         /*
1673          * If we're not logged in, but we have username and password cookies
1674          * supplied by the browser, try using them to log in.
1675          */
1676         if ((!WCC->logged_in)
1677            && (!IsEmptyStr(c_username))
1678            && (!IsEmptyStr(c_password))) {
1679                 serv_printf("USER %s", c_username);
1680                 serv_getln(buf, sizeof buf);
1681                 if (buf[0] == '3') {
1682                         serv_printf("PASS %s", c_password);
1683                         serv_getln(buf, sizeof buf);
1684                         if (buf[0] == '2') {
1685                                 StrBuf *Lang;
1686                                 become_logged_in(c_username, c_password, buf);
1687                                 if (get_preference("language", &Lang)) {
1688                                         set_selected_language(ChrPtr(Lang));
1689                                         go_selected_language();         /* set locale */
1690                                 }
1691                         }
1692                 }
1693         }
1694         /*
1695          * If we don't have a current room, but a cookie specifying the
1696          * current room is supplied, make an effort to go there.
1697          */
1698         if ((IsEmptyStr(WCC->wc_roomname)) && (!IsEmptyStr(c_roomname))) {
1699                 serv_printf("GOTO %s", c_roomname);
1700                 serv_getln(buf, sizeof buf);
1701                 if (buf[0] == '2') {
1702                         safestrncpy(WCC->wc_roomname, c_roomname, sizeof WCC->wc_roomname);
1703                 }
1704         }
1705
1706         if (!strcasecmp(action, "image")) {
1707                 output_image();
1708         } else if (!strcasecmp(action, "display_mime_icon")) {
1709                 display_mime_icon();
1710         }
1711         else {
1712                 void *vHandler;
1713                 WebcitHandler *Handler;
1714
1715                 GetHash(HandlerHash, action, strlen(action) /* TODO*/, &vHandler),
1716                         Handler = (WebcitHandler*) vHandler;
1717                 if (Handler != NULL) {
1718                         if (!WCC->logged_in && ((Handler->Flags & ANONYMOUS) == 0)) {
1719                                 display_login(NULL);
1720                         }
1721                         else {
1722                                 if((Handler->Flags & NEED_URL)) {
1723                                         if (WCC->UrlFragment1 == NULL)
1724                                                 WCC->UrlFragment1 = NewStrBuf();
1725                                         if (WCC->UrlFragment2 == NULL)
1726                                                 WCC->UrlFragment2 = NewStrBuf();
1727                                         StrBufPrintf(WCC->UrlFragment1, "%s", index[1]);
1728                                         StrBufPrintf(WCC->UrlFragment2, "%s", index[2]);
1729                                 }
1730                                 if ((Handler->Flags & AJAX) != 0)
1731                                         begin_ajax_response();
1732                                 Handler->F();
1733                                 if ((Handler->Flags & AJAX) != 0)
1734                                         end_ajax_response();
1735                         }
1736                 }
1737         /* When all else fais, display the main menu. */
1738         else {
1739                 if (!WCC->logged_in)
1740                         display_login(NULL);
1741                 else
1742                         display_main_menu();
1743         }
1744 }
1745 SKIP_ALL_THIS_CRAP:
1746         fflush(stdout);
1747         if (content != NULL) {
1748                 free(content);
1749                 content = NULL;
1750         }
1751         free_urls();
1752         if (WCC->upload_length > 0) {
1753                 free(WCC->upload);
1754                 WCC->upload_length = 0;
1755         }
1756 }
1757
1758
1759 /*
1760  * Replacement for sleep() that uses select() in order to avoid SIGALRM
1761  */
1762 void sleeeeeeeeeep(int seconds)
1763 {
1764         struct timeval tv;
1765
1766         tv.tv_sec = seconds;
1767         tv.tv_usec = 0;
1768         select(0, NULL, NULL, NULL, &tv);
1769 }
1770
1771 void diagnostics(void)
1772 {
1773         output_headers(1, 1, 1, 0, 0, 0);
1774         wprintf("Session: %d<hr />\n", WC->wc_session);
1775         wprintf("Command: <br /><PRE>\n");
1776         escputs(WC->UrlFragment1);
1777         wprintf("<br />\n");
1778         escputs(WC->UrlFragment2);
1779         wprintf("</PRE><hr />\n");
1780         wprintf("Variables: <br /><PRE>\n");
1781         dump_vars();
1782         wprintf("</PRE><hr />\n");
1783         wDumpContent(1);
1784 }
1785
1786 void view_mimepart(void) {
1787         mimepart(ChrPtr(WC->UrlFragment1),
1788                  ChrPtr(WC->UrlFragment2),
1789                  0);
1790 }
1791
1792 void download_mimepart(void) {
1793         mimepart(ChrPtr(WC->UrlFragment1),
1794                  ChrPtr(WC->UrlFragment2),
1795                  1);
1796 }
1797
1798 void
1799 InitModule_WEBCIT
1800 (void)
1801 {
1802         WebcitAddUrlHandler(HKEY("blank"), blank_page, ANONYMOUS);
1803         WebcitAddUrlHandler(HKEY("do_template"), url_do_template, ANONYMOUS);
1804         WebcitAddUrlHandler(HKEY("sslg"), seconds_since_last_gexp, AJAX);
1805         WebcitAddUrlHandler(HKEY("ajax_servcmd"), ajax_servcmd, 0);
1806         WebcitAddUrlHandler(HKEY("change_start_page"), change_start_page, 0);
1807         WebcitAddUrlHandler(HKEY("toggle_self_service"), toggle_self_service, 0);
1808         WebcitAddUrlHandler(HKEY("vcardphoto"), display_vcard_photo_img, NEED_URL);
1809         WebcitAddUrlHandler(HKEY("mimepart"), view_mimepart, NEED_URL);
1810         WebcitAddUrlHandler(HKEY("mimepart_download"), download_mimepart, NEED_URL);
1811         WebcitAddUrlHandler(HKEY("diagnostics"), diagnostics, NEED_URL);
1812 }