webcit/webcit.c

   1 /*
   2  * This is the main transaction loop of the web service.  It maintains a
   3  * persistent session to the Citadel server, handling HTTP WebCit requests as
   4  * they arrive and presenting a user interface.
   5  */
   6 #define SHOW_ME_VAPPEND_PRINTF
   7 #include <stdio.h>
   8 #include <stdarg.h>
   9 #include "webcit.h"
  10 #include "groupdav.h"
  11 #include "webserver.h"
  12
  13
  14 StrBuf *csslocal = NULL;
  15 HashList *HandlerHash = NULL;
  16
  17
  18 void DeleteWebcitHandler(void *vHandler)
  19 {
  20         WebcitHandler *Handler = (WebcitHandler*) vHandler;
  21         FreeStrBuf(&Handler->Name);
  22         FreeStrBuf(&Handler->DisplayName);
  23         free (Handler);
  24 }
  25
  26 void WebcitAddUrlHandler(const char * UrlString, long UrlSLen,
  27                          const char *DisplayName, long dslen,
  28                          WebcitHandlerFunc F,
  29                          long Flags)
  30 {
  31         WebcitHandler *NewHandler;
  32         NewHandler = (WebcitHandler*) malloc(sizeof(WebcitHandler));
  33         NewHandler->F = F;
  34         NewHandler->Flags = Flags;
  35         NewHandler->Name = NewStrBufPlain(UrlString, UrlSLen);
  36         StrBufShrinkToFit(NewHandler->Name, 1);
  37         NewHandler->DisplayName = NewStrBufPlain(DisplayName, dslen);
  38         StrBufShrinkToFit(NewHandler->DisplayName, 1);
  39         Put(HandlerHash, UrlString, UrlSLen, NewHandler, DeleteWebcitHandler);
  40 }
  41
  42 void tmplput_HANDLER_DISPLAYNAME(StrBuf *Target, WCTemplputParams *TP)
  43 {
  44         wcsession *WCC = WC;
  45         if (WCC->Hdr->HR.Handler != NULL)
  46                 StrBufAppendTemplate(Target, TP, WCC->Hdr->HR.Handler->DisplayName, 0);
  47 }
  48
  49 void tmplput_HOST_DISPLAYNAME(StrBuf *Target, WCTemplputParams *TP)
  50 {
  51         wcsession *WCC = WC;
  52         StrBufAppendTemplate(Target, TP, WCC->Hdr->HR.http_host, 0);
  53 }
  54
  55 /*
  56  * web-printing funcion. uses our vsnprintf wrapper
  57  */
  58 #ifdef UBER_VERBOSE_DEBUGGING
  59 void wcc_printf(const char *FILE, const char *FUNCTION, long LINE, const char *format,...)
  60 #else
  61 void wc_printf(const char *format,...)
  62 #endif
  63 {
  64         wcsession *WCC = WC;
  65         va_list arg_ptr;
  66
  67         if (WCC->WBuf == NULL)
  68                 WCC->WBuf = NewStrBuf();
  69 #ifdef UBER_VERBOSE_DEBUGGING
  70         StrBufAppendPrintf(WCC->WBuf, "\n%s:%s:%d[", FILE, FUNCTION, LINE);
  71 #endif
  72
  73         va_start(arg_ptr, format);
  74         StrBufVAppendPrintf(WCC->WBuf, format, arg_ptr);
  75         va_end(arg_ptr);
  76 #ifdef UBER_VERBOSE_DEBUGGING
  77         StrBufAppendPrintf(WCC->WBuf, "]\n");
  78 #endif
  79 }
  80
  81 /*
  82  * http-header-printing funcion. uses our vsnprintf wrapper
  83  */
  84 void hprintf(const char *format,...)
  85 {
  86         wcsession *WCC = WC;
  87         va_list arg_ptr;
  88
  89         va_start(arg_ptr, format);
  90         StrBufVAppendPrintf(WCC->HBuf, format, arg_ptr);
  91         va_end(arg_ptr);
  92 }
  93
  94
  95
  96 /*
  97  * wrap up an HTTP session, closes tags, etc.
  98  *
  99  * print_standard_html_footer should be set to:
 100  * 0            - to transmit only,
 101  * nonzero      - to append the closing tags
 102  */
 103 void wDumpContent(int print_standard_html_footer)
 104 {
 105         if (print_standard_html_footer) {
 106                 wc_printf("</div> <!-- end of 'content' div -->\n");
 107                 do_template("trailing", NULL);
 108         }
 109
 110         /* If we've been saving it all up for one big output burst,
 111          * go ahead and do that now.
 112          */
 113         end_burst();
 114 }
 115
 116
 117
 118
 119 /*
 120  * Output HTTP headers and leading HTML for a page
 121  */
 122 void output_headers(    int do_httpheaders,     /* 1 = output HTTP headers                        */
 123                         int do_htmlhead,        /* 1 = output HTML <head> section and <body> opener */
 124
 125                         int do_room_banner,     /* 0=no, 1=yes,
 126                                                  * 2 = I'm going to embed my own, so don't open the
 127                                                  *     <div id="content"> either.
 128                                                  */
 129
 130                         int unset_cookies,      /* 1 = session is terminating, so unset the cookies */
 131                         int suppress_check,     /* 1 = suppress check for instant messages        */
 132                         int cache               /* 1 = allow browser to cache this page      */
 133 ) {
 134         wcsession *WCC = WC;
 135         char httpnow[128];
 136
 137         hprintf("HTTP/1.1 200 OK\n");
 138         http_datestring(httpnow, sizeof httpnow, time(NULL));
 139
 140         if (do_httpheaders) {
 141                 if (WCC->serv_info != NULL)
 142                         hprintf("Content-type: text/html; charset=utf-8\r\n"
 143                                 "Server: %s / %s\n"
 144                                 "Connection: close\r\n",
 145                                 PACKAGE_STRING,
 146                                 ChrPtr(WCC->serv_info->serv_software));
 147                 else
 148                         hprintf("Content-type: text/html; charset=utf-8\r\n"
 149                                 "Server: %s / [n/a]\n"
 150                                 "Connection: close\r\n",
 151                                 PACKAGE_STRING);
 152         }
 153
 154         if (cache > 0) {
 155                 char httpTomorow[128];
 156
 157                 http_datestring(httpTomorow, sizeof httpTomorow,
 158                                 time(NULL) + 60 * 60 * 24 * 2);
 159
 160                 hprintf("Pragma: public\r\n"
 161                         "Cache-Control: max-age=3600, must-revalidate\r\n"
 162                         "Last-modified: %s\r\n"
 163                         "Expires: %s\r\n",
 164                         httpnow,
 165                         httpTomorow
 166                 );
 167         }
 168         else {
 169                 hprintf("Pragma: no-cache\r\n"
 170                         "Cache-Control: no-store\r\n"
 171                         "Expires: -1\r\n"
 172                 );
 173         }
 174
 175         if (cache < 2) stuff_to_cookie(unset_cookies);
 176
 177         if (do_htmlhead) {
 178                 begin_burst();
 179                 do_template("head", NULL);
 180
 181                 /* check for ImportantMessages (these display in a div overlaying the main screen) */
 182                 if (!IsEmptyStr(WCC->ImportantMessage)) {
 183                         wc_printf("<div id=\"important_message\">\n"
 184                                 "<span class=\"imsg\">");
 185                         StrEscAppend(WCC->WBuf, NULL, WCC->ImportantMessage, 0, 0);
 186                         wc_printf("</span><br />\n"
 187                                 "</div>\n"
 188                         );
 189                         StrBufAppendBufPlain(WCC->trailing_javascript,
 190                                              HKEY("setTimeout('hide_imsg_popup()', 5000);       \n"),
 191                                              0
 192                         );
 193                         WCC->ImportantMessage[0] = 0;
 194                 }
 195                 else if (StrLength(WCC->ImportantMsg) > 0) {
 196                         wc_printf("<div id=\"important_message\">\n"
 197                                 "<span class=\"imsg\">");
 198                         StrEscAppend(WCC->WBuf, WCC->ImportantMsg, NULL, 0, 0);
 199                         wc_printf("</span><br />\n"
 200                                 "</div>\n"
 201                         );
 202                         StrBufAppendBufPlain(WCC->trailing_javascript,
 203                                              HKEY("setTimeout('hide_imsg_popup()', 5000);       \n"),
 204                                              0
 205                         );
 206                         FlushStrBuf(WCC->ImportantMsg);
 207                 }
 208                 if ( (WCC->logged_in) && (!unset_cookies) ) {
 209                         DoTemplate(HKEY("paging"), NULL, &NoCtx);
 210                 }
 211
 212                 if (do_room_banner == 1) {
 213                         tmplput_roombanner(NULL, NULL);
 214                 }
 215         }
 216
 217         if (do_room_banner == 1) {
 218                 wc_printf("<div id=\"content\">\n");
 219         }
 220 }
 221
 222 void output_custom_content_header(const char *ctype) {
 223   hprintf("HTTP/1.1 200 OK\r\n");
 224   hprintf("Content-type: %s; charset=utf-8\r\n",ctype);
 225   hprintf("Server: %s / %s\r\n", PACKAGE_STRING, ChrPtr(WC->serv_info->serv_software));
 226   hprintf("Connection: close\r\n");
 227 }
 228
 229
 230 /*
 231  * Generic function to do an HTTP redirect.  Easy and fun.
 232  */
 233 void http_redirect(const char *whichpage) {
 234         hprintf("HTTP/1.1 302 Moved Temporarily\n");
 235         hprintf("Location: %s\r\n", whichpage);
 236         hprintf("URI: %s\r\n", whichpage);
 237         hprintf("Content-type: text/html; charset=utf-8\r\n");
 238         begin_burst();
 239         wc_printf("<html><body>");
 240         wc_printf("Go <a href=\"%s\">here</A>.", whichpage);
 241         wc_printf("</body></html>\n");
 242         end_burst();
 243 }
 244
 245
 246
 247 /*
 248  * Output a piece of content to the web browser using conformant HTTP and MIME semantics
 249  */
 250 void http_transmit_thing(const char *content_type,
 251                          int is_static) {
 252
 253 #ifndef TECH_PREVIEW
 254         lprintf(9, "http_transmit_thing(%s)%s\n",
 255                 content_type,
 256                 ((is_static > 0) ? " (static)" : "")
 257         );
 258 #endif
 259         output_headers(0, 0, 0, 0, 0, is_static);
 260
 261         hprintf("Content-type: %s\r\n"
 262                 "Server: %s\r\n"
 263                 "Connection: close\r\n",
 264                 content_type,
 265                 PACKAGE_STRING);
 266
 267         end_burst();
 268 }
 269
 270
 271 /*
 272  * Convenience functions to display a page containing only a string
 273  *
 274  * titlebarcolor        color of the titlebar of the frame
 275  * titlebarmsg          text to display in the title bar
 276  * messagetext          body of the box
 277  */
 278 void convenience_page(const char *titlebarcolor, const char *titlebarmsg, const char *messagetext)
 279 {
 280         hprintf("HTTP/1.1 200 OK\n");
 281         output_headers(1, 1, 2, 0, 0, 0);
 282         wc_printf("<div id=\"banner\">\n");
 283         wc_printf("<table width=100%% border=0 bgcolor=\"#%s\"><tr><td>", titlebarcolor);
 284         wc_printf("<span class=\"titlebar\">%s</span>\n", titlebarmsg);
 285         wc_printf("</td></tr></table>\n");
 286         wc_printf("</div>\n<div id=\"content\">\n");
 287         escputs(messagetext);
 288
 289         wc_printf("<hr />\n");
 290         wDumpContent(1);
 291 }
 292
 293
 294 /*
 295  * Display a blank page.
 296  */
 297 void blank_page(void) {
 298         output_headers(1, 1, 0, 0, 0, 0);
 299         wDumpContent(2);
 300 }
 301
 302
 303 /*
 304  * A template has been requested
 305  */
 306 void url_do_template(void) {
 307         const StrBuf *MimeType;
 308         const StrBuf *Tmpl = sbstr("template");
 309         begin_burst();
 310         MimeType = DoTemplate(SKEY(Tmpl), NULL, &NoCtx);
 311         http_transmit_thing(ChrPtr(MimeType), 0);
 312 }
 313
 314
 315
 316 /*
 317  * convenience function to indicate success
 318  */
 319 void display_success(char *successmessage)
 320 {
 321         convenience_page("007700", "OK", successmessage);
 322 }
 323
 324
 325 /*
 326  * Authorization required page
 327  * This is probably temporary and should be revisited
 328  */
 329 void authorization_required(void)
 330 {
 331         wcsession *WCC = WC;
 332         const char *message = "";
 333
 334         hprintf("HTTP/1.1 401 Authorization Required\r\n");
 335         hprintf(
 336                 "Server: %s / %s\r\n"
 337                 "Connection: close\r\n",
 338                 PACKAGE_STRING, ChrPtr(WC->serv_info->serv_software)
 339         );
 340         hprintf("WWW-Authenticate: Basic realm=\"%s\"\r\n", ChrPtr(WC->serv_info->serv_humannode));
 341         hprintf("Content-Type: text/html\r\n");
 342         begin_burst();
 343         wc_printf("<h1>");
 344         wc_printf(_("Authorization Required"));
 345         wc_printf("</h1>\r\n");
 346
 347
 348         if (WCC->ImportantMsg != NULL)
 349                 message = ChrPtr(WCC->ImportantMsg);
 350         else if (WCC->ImportantMessage != NULL)
 351                 message = WCC->ImportantMessage;
 352
 353         wc_printf(_("The resource you requested requires a valid username and password. "
 354                 "You could not be logged in: %s\n"), message);
 355         wDumpContent(0);
 356         end_webcit_session();
 357 }
 358
 359 /*
 360  * Convenience functions to wrap around asynchronous ajax responses
 361  */
 362 void begin_ajax_response(void) {
 363         wcsession *WCC = WC;
 364
 365         FlushStrBuf(WCC->HBuf);
 366         output_headers(0, 0, 0, 0, 0, 0);
 367
 368         hprintf("Content-type: text/html; charset=UTF-8\r\n"
 369                 "Server: %s\r\n"
 370                 "Connection: close\r\n"
 371                 ,
 372                 PACKAGE_STRING);
 373         begin_burst();
 374 }
 375
 376 /*
 377  * print ajax response footer
 378  */
 379 void end_ajax_response(void) {
 380         wDumpContent(0);
 381 }
 382
 383
 384
 385 /*
 386  * Wraps a Citadel server command in an AJAX transaction.
 387  */
 388 void ajax_servcmd(void)
 389 {
 390         wcsession *WCC = WC;
 391         int Done = 0;
 392         StrBuf *Buf;
 393         char *junk;
 394         size_t len;
 395
 396         begin_ajax_response();
 397         Buf = NewStrBuf();
 398         serv_puts(bstr("g_cmd"));
 399         StrBuf_ServGetln(Buf);
 400         StrBufAppendBuf(WCC->WBuf, Buf, 0);
 401         StrBufAppendBufPlain(WCC->WBuf, HKEY("\n"), 0);
 402
 403         switch (GetServerStatus(Buf, NULL)) {
 404         case 8:
 405                 serv_puts("\n\n000");
 406                 if ( (StrLength(Buf)==3) &&
 407                      !strcmp(ChrPtr(Buf), "000")) {
 408                         StrBufAppendBufPlain(WCC->WBuf, HKEY("\000"), 0);
 409                         break;
 410                 }
 411         case 1:
 412                 while (!Done) {
 413                         StrBuf_ServGetln(Buf);
 414                         if ( (StrLength(Buf)==3) &&
 415                              !strcmp(ChrPtr(Buf), "000")) {
 416                                 Done = 1;
 417                         }
 418                         StrBufAppendBuf(WCC->WBuf, Buf, 0);
 419                         StrBufAppendBufPlain(WCC->WBuf, HKEY("\n"), 0);
 420                 }
 421                 break;
 422         case 4:
 423                 text_to_server(bstr("g_input"));
 424                 serv_puts("000");
 425                 break;
 426         case 6:
 427                 len = atol(&ChrPtr(Buf)[4]);
 428                 StrBuf_ServGetBLOBBuffered(Buf, len);
 429                 break;
 430         case 7:
 431                 len = atol(&ChrPtr(Buf)[4]);
 432                 junk = malloc(len);
 433                 memset(junk, 0, len);
 434                 serv_write(junk, len);
 435                 free(junk);
 436         }
 437
 438         end_ajax_response();
 439
 440         /*
 441          * This is kind of an ugly hack, but this is the only place it can go.
 442          * If the command was GEXP, then the instant messenger window must be
 443          * running, so reset the "last_pager_check" watchdog timer so
 444          * that page_popup() doesn't try to open it a second time.
 445          */
 446         if (!strncasecmp(bstr("g_cmd"), "GEXP", 4)) {
 447                 WCC->last_pager_check = time(NULL);
 448         }
 449         FreeStrBuf(&Buf);
 450 }
 451
 452
 453 /*
 454  * Helper function for the asynchronous check to see if we need
 455  * to open the instant messenger window.
 456  */
 457 void seconds_since_last_gexp(void)
 458 {
 459         char buf[256];
 460
 461         if ( (time(NULL) - WC->last_pager_check) < 30) {
 462                 wc_printf("NO\n");
 463         }
 464         else {
 465                 memset(buf, 0, 5);
 466                 serv_puts("NOOP");
 467                 serv_getln(buf, sizeof buf);
 468                 if (buf[3] == '*') {
 469                         wc_printf("YES");
 470                 }
 471                 else {
 472                         wc_printf("NO");
 473                 }
 474         }
 475 }
 476
 477
 478
 479 int ReadPostData(void)
 480 {
 481         int rc;
 482         int body_start = 0;
 483         wcsession *WCC = WC;
 484         StrBuf *content = NULL;
 485
 486         content = NewStrBufPlain(NULL, WCC->Hdr->HR.ContentLength + 256);
 487
 488         StrBufPrintf(content,
 489                      "Content-type: %s\n"
 490                      "Content-length: %ld\n\n",
 491                      ChrPtr(WCC->Hdr->HR.ContentType),
 492                              WCC->Hdr->HR.ContentLength);
 493 /*
 494   hprintf("Content-type: %s\n"
 495   "Content-length: %d\n\n",
 496   ContentType, ContentLength);
 497 */
 498         body_start = StrLength(content);
 499
 500         /** Read the entire input data at once. */
 501         rc = client_read_to(WCC->Hdr, content,
 502                             WCC->Hdr->HR.ContentLength,
 503                             SLEEPING);
 504         if (rc < 0)
 505                 return rc;
 506
 507
 508         if (!strncasecmp(ChrPtr(WCC->Hdr->HR.ContentType), "application/x-www-form-urlencoded", 33)) {
 509                 StrBufCutLeft(content, body_start);
 510                 ParseURLParams(content);
 511         } else if (!strncasecmp(ChrPtr(WCC->Hdr->HR.ContentType), "multipart", 9)) {
 512                 char *Buf;
 513                 char *BufEnd;
 514                 long len;
 515
 516                 len = StrLength(content);
 517                 Buf = SmashStrBuf(&content);
 518                 BufEnd = Buf + len;
 519                 mime_parser(Buf, BufEnd, *upload_handler, NULL, NULL, NULL, 0);
 520                 free(Buf);
 521         } else if (WCC->Hdr->HR.ContentLength > 0) {
 522                 WCC->upload = content;
 523                 WCC->upload_length = StrLength(WCC->upload);
 524                 content = NULL;
 525         }
 526         FreeStrBuf(&content);
 527         return 1;
 528 }
 529
 530
 531 void ParseREST_URL(void)
 532 {
 533         StrBuf *Buf;
 534         StrBuf *pFloor = NULL;
 535         wcsession *WCC = WC;
 536         long i = 0;
 537         const char *pCh = NULL;
 538         HashList *Floors;
 539         void *vFloor;
 540
 541         lprintf(1, "parsing rest URL: %s\n", ChrPtr(WCC->Hdr->HR.ReqLine));
 542
 543         WCC->Directory = NewHash(1, Flathash);
 544         WCC->CurrentFloor = NULL;
 545
 546         Buf = NewStrBuf();
 547         while (StrBufExtract_NextToken(Buf, WCC->Hdr->HR.ReqLine, &pCh,  '/') >= 0)
 548         {
 549                 if (StrLength(Buf) != 0) {
 550                         /* ignore empty path segments */
 551                         StrBufUnescape(Buf, 1);
 552                         Put(WCC->Directory, IKEY(i), Buf, HFreeStrBuf);
 553                         if (i==0)
 554                                 pFloor = Buf;
 555                         Buf = NewStrBuf();
 556                 }
 557                 i++;
 558         }
 559
 560         FreeStrBuf(&Buf);
 561         if (pFloor != NULL)
 562         {
 563                 Floors = GetFloorListHash(NULL, NULL);
 564
 565                 if (Floors != NULL)
 566                 {
 567                         if (GetHash(WCC->FloorsByName, SKEY(pFloor), &vFloor))
 568                                 WCC->CurrentFloor = (Floor*) vFloor;
 569                 }
 570         }
 571 }
 572
 573 int Conditional_REST_DEPTH(StrBuf *Target, WCTemplputParams *TP)
 574 {
 575         long Depth, IsDepth;
 576         long offset = 0;
 577         wcsession *WCC = WC;
 578
 579         if (WCC->Hdr->HR.Handler != NULL)
 580                 offset ++;
 581         Depth = GetTemplateTokenNumber(Target, TP, 2, 0);
 582         IsDepth = GetCount(WCC->Directory) + offset;
 583
 584 //      LogTemplateError(Target, "bla", 1, TP, "REST_DEPTH: %ld : %ld\n", Depth, IsDepth);
 585         if (Depth < 0) {
 586                 Depth = -Depth;
 587                 return IsDepth > Depth;
 588         }
 589         else
 590                 return Depth == IsDepth;
 591 }
 592
 593
 594
 595 /*
 596  * Entry point for WebCit transaction
 597  */
 598 void session_loop(void)
 599 {
 600         int Flags = 0;
 601         int xhttp;
 602         StrBuf *Buf;
 603
 604         /*
 605          * We stuff these with the values coming from the client cookies,
 606          * so we can use them to reconnect a timed out session if we have to.
 607          */
 608         wcsession *WCC;
 609
 610         WCC= WC;
 611         WCC->upload_length = 0;
 612         WCC->upload = NULL;
 613         WCC->is_mobile = 0;
 614         WCC->Hdr->nWildfireHeaders = 0;
 615         if (WCC->Hdr->HR.Handler != NULL)
 616                 Flags = WCC->Hdr->HR.Handler->Flags; /* so we can temporarily add our own... */
 617
 618         if (WCC->Hdr->HR.ContentLength > 0) {
 619                 if (ReadPostData() < 0) {
 620                         return;
 621                 }
 622         }
 623
 624         Buf = NewStrBuf();
 625         WCC->trailing_javascript = NewStrBuf();
 626
 627         /* Convert base64-encoded URL's back to plain text */
 628         if (!strncmp(ChrPtr(WCC->Hdr->this_page), "/B64", 4)) {
 629                 StrBufCutLeft(WCC->Hdr->this_page, 4);
 630                 StrBufDecodeBase64(WCC->Hdr->this_page);
 631                 http_redirect(ChrPtr(WCC->Hdr->this_page));
 632                 goto SKIP_ALL_THIS_CRAP;
 633         }
 634
 635         /* If there are variables in the URL, we must grab them now */
 636         if (WCC->Hdr->PlainArgs != NULL)
 637                 ParseURLParams(WCC->Hdr->PlainArgs);
 638
 639         /* If the client sent a nonce that is incorrect, kill the request. */
 640         if (havebstr("nonce")) {
 641                 lprintf(9, "Comparing supplied nonce %s to session nonce %ld\n",
 642                         bstr("nonce"), WCC->nonce);
 643                 if (ibstr("nonce") != WCC->nonce) {
 644                         lprintf(9, "Ignoring request with mismatched nonce.\n");
 645                         hprintf("HTTP/1.1 404 Security check failed\r\n");
 646                         hprintf("Content-Type: text/plain\r\n");
 647                         begin_burst();
 648                         wc_printf("Security check failed.\r\n");
 649                         end_burst();
 650                         goto SKIP_ALL_THIS_CRAP;
 651                 }
 652         }
 653
 654         /*
 655          * If we're not connected to a Citadel server, try to hook up the
 656          * connection now.
 657          */
 658         if (!WCC->connected) {
 659                 if (GetConnected ())
 660                         goto SKIP_ALL_THIS_CRAP;
 661         }
 662
 663
 664         /*
 665          * If we're not logged in, but we have authentication data (either from
 666          * a cookie or from http-auth), try logging in to Citadel using that.
 667          */
 668         if ((!WCC->logged_in)
 669             && (StrLength(WCC->Hdr->c_username) > 0)
 670             && (StrLength(WCC->Hdr->c_password) > 0))
 671         {
 672                 long Status;
 673
 674                 FlushStrBuf(Buf);
 675                 serv_printf("USER %s", ChrPtr(WCC->Hdr->c_username));
 676                 StrBuf_ServGetln(Buf);
 677                 if (GetServerStatus(Buf, &Status) == 3) {
 678                         serv_printf("PASS %s", ChrPtr(WCC->Hdr->c_password));
 679                         StrBuf_ServGetln(Buf);
 680                         if (GetServerStatus(Buf, NULL) == 2) {
 681                                 become_logged_in(WCC->Hdr->c_username,
 682                                                  WCC->Hdr->c_password, Buf);
 683                         } else {
 684                                 /* Should only display when password is wrong */
 685                                 WCC->ImportantMsg = NewStrBufPlain(ChrPtr(Buf) + 4, StrLength(Buf) - 4);
 686                                 authorization_required();
 687                                 FreeStrBuf(&Buf);
 688                                 goto SKIP_ALL_THIS_CRAP;
 689                         }
 690                 }
 691                 else if (Status == 541) {
 692                         WCC->logged_in = 1;
 693                 }
 694         }
 695
 696         xhttp = (WCC->Hdr->HR.eReqType != eGET) &&
 697                 (WCC->Hdr->HR.eReqType != ePOST) &&
 698                 (WCC->Hdr->HR.eReqType != eHEAD);
 699
 700         /*
 701          * If a 'gotofirst' parameter has been specified, attempt to goto that room
 702          * prior to doing anything else.
 703          */
 704         if (havebstr("gotofirst")) {
 705                 int ret;
 706                 ret = gotoroom(sbstr("gotofirst"));     /* do quietly to avoid session output! */
 707                 if ((ret/100) != 2) {
 708                         lprintf(1, "GOTOFIRST: Unable to change to [%s]; Reason: %d\n",
 709                                 bstr("gotofirst"), ret);
 710                 }
 711         }
 712
 713         /*
 714          * If we aren't in any room yet, but we have cookie data telling us where we're
 715          * supposed to be, and 'gotofirst' was not specified, then go there.
 716          */
 717         else if ( (StrLength(WCC->CurRoom.name) == 0) && ( (StrLength(WCC->Hdr->c_roomname) > 0) )) {
 718                 int ret;
 719
 720                 lprintf(9, "We are in '%s' but cookie indicates '%s', going there...\n",
 721                         ChrPtr(WCC->CurRoom.name),
 722                         ChrPtr(WCC->Hdr->c_roomname)
 723                 );
 724                 ret = gotoroom(WCC->Hdr->c_roomname);   /* do quietly to avoid session output! */
 725                 if ((ret/100) != 2) {
 726                         lprintf(1, "COOKIEGOTO: Unable to change to [%s]; Reason: %d\n",
 727                                 ChrPtr(WCC->Hdr->c_roomname), ret);
 728                 }
 729         }
 730
 731         if (WCC->Hdr->HR.Handler != NULL) {
 732                 if (!WCC->logged_in && ((WCC->Hdr->HR.Handler->Flags & ANONYMOUS) == 0)) {
 733                         display_login();
 734                 }
 735                 else {
 736 /*
 737                         if ((WCC->Hdr->HR.Handler->Flags & PARSE_REST_URL) != 0)
 738                                 ParseREST_URL();
 739 */
 740                         if ((WCC->Hdr->HR.Handler->Flags & AJAX) != 0)
 741                                 begin_ajax_response();
 742                         WCC->Hdr->HR.Handler->F();
 743                         if ((WCC->Hdr->HR.Handler->Flags & AJAX) != 0)
 744                                 end_ajax_response();
 745                 }
 746         }
 747         /* When all else fais, display the main menu. */
 748         else {
 749                 /*
 750                  * ordinary browser users get a nice login screen, DAV etc. requsets
 751                  * are given a 401 so they can handle it appropriate.
 752                  */
 753                 if (!WCC->logged_in)  {
 754                         if (xhttp)
 755                                 authorization_required();
 756                         else
 757                                 display_login();
 758                 }
 759                 /*
 760                  * Toplevel dav requests? or just a flat browser request?
 761                  */
 762                 else {
 763                         if (xhttp)
 764                                 groupdav_main();
 765                         else
 766                                 display_main_menu();
 767                 }
 768         }
 769
 770 SKIP_ALL_THIS_CRAP:
 771         FreeStrBuf(&Buf);
 772         fflush(stdout);
 773 }
 774
 775
 776 /*
 777  * Replacement for sleep() that uses select() in order to avoid SIGALRM
 778  */
 779 void sleeeeeeeeeep(int seconds)
 780 {
 781         struct timeval tv;
 782
 783         tv.tv_sec = seconds;
 784         tv.tv_usec = 0;
 785         select(0, NULL, NULL, NULL, &tv);
 786 }
 787
 788 int Conditional_IS_HTTPS(StrBuf *Target, WCTemplputParams *TP)
 789 {
 790         return is_https != 0;
 791 }
 792
 793 void AppendImportantMessage(const char *pch, long len)
 794 {
 795         wcsession *WCC = WC;
 796
 797         if (StrLength(WCC->ImportantMsg) > 0) {
 798                 StrBufAppendBufPlain(WCC->ImportantMsg, HKEY("\n"), 0);
 799         }
 800
 801         StrBufAppendBufPlain(WCC->ImportantMsg, pch, len, 0);
 802 }
 803
 804 int ConditionalImportantMesage(StrBuf *Target, WCTemplputParams *TP)
 805 {
 806         wcsession *WCC = WC;
 807         if (WCC != NULL)
 808                 return ((!IsEmptyStr(WCC->ImportantMessage)) ||
 809                         (StrLength(WCC->ImportantMsg) > 0));
 810         else
 811                 return 0;
 812 }
 813
 814 void tmplput_importantmessage(StrBuf *Target, WCTemplputParams *TP)
 815 {
 816         wcsession *WCC = WC;
 817
 818         if (WCC != NULL) {
 819                 if (!IsEmptyStr(WCC->ImportantMessage)) {
 820                         StrEscAppend(Target, NULL, WCC->ImportantMessage, 0, 0);
 821                         WCC->ImportantMessage[0] = '\0';
 822                 }
 823                 else if (StrLength(WCC->ImportantMsg) > 0) {
 824                         StrEscAppend(Target, WCC->ImportantMsg, NULL, 0, 0);
 825                         FlushStrBuf(WCC->ImportantMsg);
 826                 }
 827         }
 828 }
 829
 830 void tmplput_trailing_javascript(StrBuf *Target, WCTemplputParams *TP)
 831 {
 832         wcsession *WCC = WC;
 833
 834         if (WCC != NULL)
 835                 StrBufAppendTemplate(Target, TP, WCC->trailing_javascript, 0);
 836 }
 837
 838 void tmplput_csslocal(StrBuf *Target, WCTemplputParams *TP)
 839 {
 840         StrBufAppendBuf(Target,
 841                         csslocal, 0);
 842 }
 843
 844 extern char static_local_dir[PATH_MAX];
 845
 846
 847 void
 848 InitModule_WEBCIT
 849 (void)
 850 {
 851         char dir[SIZ];
 852         WebcitAddUrlHandler(HKEY("blank"), "", 0, blank_page, ANONYMOUS|COOKIEUNNEEDED|ISSTATIC);
 853         WebcitAddUrlHandler(HKEY("do_template"), "", 0, url_do_template, ANONYMOUS);
 854         WebcitAddUrlHandler(HKEY("sslg"), "", 0, seconds_since_last_gexp, AJAX|LOGCHATTY);
 855         WebcitAddUrlHandler(HKEY("ajax_servcmd"), "", 0, ajax_servcmd, 0);
 856         WebcitAddUrlHandler(HKEY("webcit"), "", 0, blank_page, URLNAMESPACE);
 857
 858         WebcitAddUrlHandler(HKEY("401"), "", 0, authorization_required, ANONYMOUS|COOKIEUNNEEDED);
 859         RegisterConditional(HKEY("COND:IMPMSG"), 0, ConditionalImportantMesage, CTX_NONE);
 860         RegisterConditional(HKEY("COND:REST:DEPTH"), 0, Conditional_REST_DEPTH, CTX_NONE);
 861         RegisterConditional(HKEY("COND:IS_HTTPS"), 0, Conditional_IS_HTTPS, CTX_NONE);
 862
 863         RegisterNamespace("CSSLOCAL", 0, 0, tmplput_csslocal, NULL, CTX_NONE);
 864         RegisterNamespace("IMPORTANTMESSAGE", 0, 0, tmplput_importantmessage, NULL, CTX_NONE);
 865         RegisterNamespace("TRAILING_JAVASCRIPT", 0, 0, tmplput_trailing_javascript, NULL, CTX_NONE);
 866         RegisterNamespace("URL:DISPLAYNAME", 0, 1, tmplput_HANDLER_DISPLAYNAME, NULL, CTX_NONE);
 867         RegisterNamespace("URL:HOSTNAME", 0, 1, tmplput_HOST_DISPLAYNAME, NULL, CTX_NONE);
 868
 869
 870         snprintf(dir, SIZ, "%s/webcit.css", static_local_dir);
 871         if (!access(dir, R_OK)) {
 872                 lprintf(9, "Using local Stylesheet [%s]\n", dir);
 873                 csslocal = NewStrBufPlain(HKEY("<link href=\"static.local/webcit.css\" rel=\"stylesheet\" type=\"text/css\" />"));
 874         }
 875         else
 876                 lprintf(9, "No Site-local Stylesheet [%s] installed. \n", dir);
 877
 878 }
 879
 880 void
 881 ServerStartModule_WEBCIT
 882 (void)
 883 {
 884         HandlerHash = NewHash(1, NULL);
 885 }
 886
 887
 888 void
 889 ServerShutdownModule_WEBCIT
 890 (void)
 891 {
 892         FreeStrBuf(&csslocal);
 893         DeleteHash(&HandlerHash);
 894 }
 895
 896
 897
 898 void
 899 SessionNewModule_WEBCIT
 900 (wcsession *sess)
 901 {
 902         sess->ImportantMsg = NewStrBuf();
 903         sess->WBuf = NewStrBufPlain(NULL, SIZ * 4);
 904         sess->HBuf = NewStrBufPlain(NULL, SIZ / 4);
 905 }
 906
 907 void
 908 SessionDetachModule_WEBCIT
 909 (wcsession *sess)
 910 {
 911         DeleteHash(&sess->Directory);
 912
 913         FreeStrBuf(&sess->upload);
 914         sess->upload_length = 0;
 915
 916         FreeStrBuf(&sess->trailing_javascript);
 917
 918         if (StrLength(sess->WBuf) > SIZ * 30) /* Bigger than 120K? release. */
 919         {
 920                 FreeStrBuf(&sess->WBuf);
 921                 sess->WBuf = NewStrBuf();
 922         }
 923         else
 924                 FlushStrBuf(sess->WBuf);
 925         FlushStrBuf(sess->HBuf);
 926 }
 927
 928 void
 929 SessionDestroyModule_WEBCIT
 930 (wcsession *sess)
 931 {
 932         FreeStrBuf(&sess->WBuf);
 933         FreeStrBuf(&sess->HBuf);
 934         FreeStrBuf(&sess->ImportantMsg);
 935 }
 936