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 #define SHOW_ME_VAPPEND_PRINTF
   9 #include <stdio.h>
  10 #include <stdarg.h>
  11 #include "webcit.h"
  12 #include "groupdav.h"
  13 #include "webserver.h"
  14
  15
  16 /*
  17  * String to unset the cookie.
  18  * Any date "in the past" will work, so I chose my birthday, right down to
  19  * the exact minute.  :)
  20  */
  21 static char *unset = "; expires=28-May-1971 18:10:00 GMT";
  22 StrBuf *csslocal = NULL;
  23 HashList *HandlerHash = NULL;
  24
  25
  26 void DeleteWebcitHandler(void *vHandler)
  27 {
  28         WebcitHandler *Handler = (WebcitHandler*) vHandler;
  29         FreeStrBuf(&Handler->Name);
  30         free (Handler);
  31
  32 }
  33
  34 void WebcitAddUrlHandler(const char * UrlString,
  35                          long UrlSLen,
  36                          WebcitHandlerFunc F,
  37                          long Flags)
  38 {
  39         WebcitHandler *NewHandler;
  40         NewHandler = (WebcitHandler*) malloc(sizeof(WebcitHandler));
  41         NewHandler->F = F;
  42         NewHandler->Flags = Flags;
  43         NewHandler->Name = NewStrBufPlain(UrlString, UrlSLen);
  44         Put(HandlerHash, UrlString, UrlSLen, NewHandler, DeleteWebcitHandler);
  45 }
  46
  47
  48 /*
  49  * web-printing funcion. uses our vsnprintf wrapper
  50  */
  51 void wprintf(const char *format,...)
  52 {
  53         wcsession *WCC = WC;
  54         va_list arg_ptr;
  55
  56         if (WCC->WBuf == NULL)
  57                 WCC->WBuf = NewStrBuf();
  58
  59         va_start(arg_ptr, format);
  60         StrBufVAppendPrintf(WCC->WBuf, format, arg_ptr);
  61         va_end(arg_ptr);
  62 }
  63
  64 /*
  65  * http-header-printing funcion. uses our vsnprintf wrapper
  66  */
  67 void hprintf(const char *format,...)
  68 {
  69         wcsession *WCC = WC;
  70         va_list arg_ptr;
  71
  72         va_start(arg_ptr, format);
  73         StrBufVAppendPrintf(WCC->HBuf, format, arg_ptr);
  74         va_end(arg_ptr);
  75 }
  76
  77
  78
  79 /*
  80  * wrap up an HTTP session, closes tags, etc.
  81  *
  82  * print_standard_html_footer should be set to:
  83  * 0            - to transmit only,
  84  * nonzero      - to append the closing tags
  85  */
  86 void wDumpContent(int print_standard_html_footer)
  87 {
  88         if (print_standard_html_footer) {
  89                 wprintf("</div> <!-- end of 'content' div -->\n");
  90                 do_template("trailing", NULL);
  91         }
  92
  93         /* If we've been saving it all up for one big output burst,
  94          * go ahead and do that now.
  95          */
  96         end_burst();
  97 }
  98
  99
 100
 101
 102 /*
 103  * Output HTTP headers and leading HTML for a page
 104  */
 105 void output_headers(    int do_httpheaders,     /* 1 = output HTTP headers                          */
 106                         int do_htmlhead,        /* 1 = output HTML <head> section and <body> opener */
 107
 108                         int do_room_banner,     /* 0=no, 1=yes,
 109                                                  * 2 = I'm going to embed my own, so don't open the
 110                                                  *     <div id="content"> either.
 111                                                  */
 112
 113                         int unset_cookies,      /* 1 = session is terminating, so unset the cookies */
 114                         int suppress_check,     /* 1 = suppress check for instant messages          */
 115                         int cache               /* 1 = allow browser to cache this page             */
 116 ) {
 117         wcsession *WCC = WC;
 118         char cookie[1024];
 119         char httpnow[128];
 120
 121         hprintf("HTTP/1.1 200 OK\n");
 122         http_datestring(httpnow, sizeof httpnow, time(NULL));
 123
 124         if (do_httpheaders) {
 125                 if (WCC->serv_info != NULL)
 126                         hprintf("Content-type: text/html; charset=utf-8\r\n"
 127                                 "Server: %s / %s\n"
 128                                 "Connection: close\r\n",
 129                                 PACKAGE_STRING,
 130                                 ChrPtr(WCC->serv_info->serv_software));
 131                 else
 132                         hprintf("Content-type: text/html; charset=utf-8\r\n"
 133                                 "Server: %s / [n/a]\n"
 134                                 "Connection: close\r\n",
 135                                 PACKAGE_STRING);
 136         }
 137
 138         if (cache) {
 139                 char httpTomorow[128];
 140
 141                 http_datestring(httpTomorow, sizeof httpTomorow,
 142                                 time(NULL) + 60 * 60 * 24 * 2);
 143
 144                 hprintf("Pragma: public\r\n"
 145                         "Cache-Control: max-age=3600, must-revalidate\r\n"
 146                         "Last-modified: %s\r\n"
 147                         "Expires: %s\r\n",
 148                         httpnow,
 149                         httpTomorow
 150                 );
 151         }
 152         else {
 153                 hprintf("Pragma: no-cache\r\n"
 154                         "Cache-Control: no-store\r\n"
 155                         "Expires: -1\r\n"
 156                 );
 157         }
 158
 159         stuff_to_cookie(cookie, 1024,
 160                         WCC->wc_session,
 161                         WCC->wc_username,
 162                         WCC->wc_password,
 163                         WCC->wc_roomname,
 164                         get_selected_language()
 165         );
 166
 167         if (unset_cookies) {
 168                 hprintf("Set-cookie: webcit=%s; path=/\r\n", unset);
 169         } else {
 170                 hprintf("Set-cookie: webcit=%s; path=/\r\n", cookie);
 171                 if (server_cookie != NULL) {
 172                         hprintf("%s\n", server_cookie);
 173                 }
 174         }
 175
 176         if (do_htmlhead) {
 177                 begin_burst();
 178                 do_template("head", NULL);
 179
 180                 /* check for ImportantMessages (these display in a div overlaying the main screen) */
 181                 if (!IsEmptyStr(WCC->ImportantMessage)) {
 182                         wprintf("<div id=\"important_message\">\n"
 183                                 "<span class=\"imsg\">");
 184                         StrEscAppend(WCC->WBuf, NULL, WCC->ImportantMessage, 0, 0);
 185                         wprintf("</span><br />\n"
 186                                 "</div>\n"
 187                         );
 188                         StrBufAppendBufPlain(WCC->trailing_javascript,
 189                                              HKEY("setTimeout('hide_imsg_popup()', 5000);       \n"),
 190                                              0
 191                         );
 192                         WCC->ImportantMessage[0] = 0;
 193                 }
 194                 else if (StrLength(WCC->ImportantMsg) > 0) {
 195                         wprintf("<div id=\"important_message\">\n"
 196                                 "<span class=\"imsg\">");
 197                         StrEscAppend(WCC->WBuf, WCC->ImportantMsg, NULL, 0, 0);
 198                         wprintf("</span><br />\n"
 199                                 "</div>\n"
 200                         );
 201                         StrBufAppendBufPlain(WCC->trailing_javascript,
 202                                              HKEY("setTimeout('hide_imsg_popup()', 5000);       \n"),
 203                                              0
 204                         );
 205                         FlushStrBuf(WCC->ImportantMsg);
 206                 }
 207                 if ( (WCC->logged_in) && (!unset_cookies) ) {
 208                         /*DoTemplate(HKEY("iconbar"), NULL, &NoCtx);*/
 209                         page_popup();
 210                 }
 211
 212                 if (do_room_banner == 1) {
 213                         wprintf("<div id=\"banner\">\n");
 214                         embed_room_banner(NULL, navbar_default);
 215                         wprintf("</div>\n");
 216                 }
 217         }
 218
 219         if (do_room_banner == 1) {
 220                 wprintf("<div id=\"content\">\n");
 221         }
 222 }
 223
 224 void output_custom_content_header(const char *ctype) {
 225   hprintf("HTTP/1.1 200 OK\r\n");
 226   hprintf("Content-type: %s; charset=utf-8\r\n",ctype);
 227   hprintf("Server: %s / %s\r\n", PACKAGE_STRING, ChrPtr(WC->serv_info->serv_software));
 228   hprintf("Connection: close\r\n");
 229 }
 230
 231
 232 /*
 233  * Generic function to do an HTTP redirect.  Easy and fun.
 234  */
 235 void http_redirect(const char *whichpage) {
 236         hprintf("HTTP/1.1 302 Moved Temporarily\n");
 237         hprintf("Location: %s\r\n", whichpage);
 238         hprintf("URI: %s\r\n", whichpage);
 239         hprintf("Content-type: text/html; charset=utf-8\r\n");
 240         wprintf("<html><body>");
 241         wprintf("Go <a href=\"%s\">here</A>.", whichpage);
 242         wprintf("</body></html>\n");
 243         end_burst();
 244 }
 245
 246
 247
 248 /*
 249  * Output a piece of content to the web browser using conformant HTTP and MIME semantics
 250  */
 251 void http_transmit_thing(const char *content_type,
 252                          int is_static) {
 253
 254 #ifndef TECH_PREVIEW
 255         lprintf(9, "http_transmit_thing(%s)%s\n",
 256                 content_type,
 257                 (is_static ? " (static)" : "")
 258         );
 259 #endif
 260         output_headers(0, 0, 0, 0, 0, is_static);
 261
 262         hprintf("Content-type: %s\r\n"
 263                 "Server: %s\r\n"
 264                 "Connection: close\r\n",
 265                 content_type,
 266                 PACKAGE_STRING);
 267
 268         end_burst();
 269 }
 270
 271 /*
 272  * print menu box like used in the floor view or admin interface.
 273  * This function takes pair of strings as va_args,
 274  * Title        Title string of the box
 275  * Class        CSS Class for the box
 276  * nLines       How many string pairs should we print? (URL, UrlText)
 277  * ...          Pairs of URL Strings and their Names
 278  */
 279 void print_menu_box(char* Title, char *Class, int nLines, ...)
 280 {
 281         va_list arg_list;
 282         long i;
 283
 284         svput("BOXTITLE", WCS_STRING, Title);
 285         do_template("beginboxx", NULL);
 286
 287         wprintf("<ul class=\"%s\">", Class);
 288
 289         va_start(arg_list, nLines);
 290         for (i = 0; i < nLines; ++i)
 291         {
 292                 wprintf("<li><a href=\"%s\">", va_arg(arg_list, char *));
 293                 wprintf((char *) va_arg(arg_list, char *));
 294                 wprintf("</a></li>\n");
 295         }
 296         va_end (arg_list);
 297
 298         wprintf("</a></li>\n");
 299
 300         wprintf("</ul>");
 301
 302         do_template("endbox", NULL);
 303 }
 304
 305
 306
 307 /*
 308  * Convenience functions to display a page containing only a string
 309  *
 310  * titlebarcolor        color of the titlebar of the frame
 311  * titlebarmsg          text to display in the title bar
 312  * messagetext          body of the box
 313  */
 314 void convenience_page(const char *titlebarcolor, const char *titlebarmsg, const char *messagetext)
 315 {
 316         hprintf("HTTP/1.1 200 OK\n");
 317         output_headers(1, 1, 2, 0, 0, 0);
 318         wprintf("<div id=\"banner\">\n");
 319         wprintf("<table width=100%% border=0 bgcolor=\"#%s\"><tr><td>", titlebarcolor);
 320         wprintf("<span class=\"titlebar\">%s</span>\n", titlebarmsg);
 321         wprintf("</td></tr></table>\n");
 322         wprintf("</div>\n<div id=\"content\">\n");
 323         escputs(messagetext);
 324
 325         wprintf("<hr />\n");
 326         wDumpContent(1);
 327 }
 328
 329
 330 /*
 331  * Display a blank page.
 332  */
 333 void blank_page(void) {
 334         output_headers(1, 1, 0, 0, 0, 0);
 335         wDumpContent(2);
 336 }
 337
 338
 339 /*
 340  * A template has been requested
 341  */
 342 void url_do_template(void) {
 343         const StrBuf *MimeType;
 344         const StrBuf *Tmpl = sbstr("template");
 345         begin_burst();
 346         MimeType = DoTemplate(SKEY(Tmpl), NULL, &NoCtx);
 347         http_transmit_thing(ChrPtr(MimeType), 0);
 348 }
 349
 350
 351
 352 /*
 353  * convenience function to indicate success
 354  */
 355 void display_success(char *successmessage)
 356 {
 357         convenience_page("007700", "OK", successmessage);
 358 }
 359
 360
 361 /*
 362  * Authorization required page
 363  * This is probably temporary and should be revisited
 364  */
 365 void authorization_required(const char *message)
 366 {
 367         hprintf("HTTP/1.1 401 Authorization Required\r\n");
 368         hprintf("WWW-Authenticate: Basic realm=\"%s\"\r\n", ChrPtr(WC->serv_info->serv_humannode));
 369         hprintf("Content-Type: text/html\r\n");
 370         wprintf("<h1>");
 371         wprintf(_("Authorization Required"));
 372         wprintf("</h1>\r\n");
 373         wprintf(_("The resource you requested requires a valid username and password. "
 374                 "You could not be logged in: %s\n"), message);
 375         wDumpContent(0);
 376
 377 }
 378
 379 /*
 380  * Convenience functions to wrap around asynchronous ajax responses
 381  */
 382 void begin_ajax_response(void) {
 383         wcsession *WCC = WC;
 384
 385         FlushStrBuf(WCC->HBuf);
 386         output_headers(0, 0, 0, 0, 0, 0);
 387
 388         hprintf("Content-type: text/html; charset=UTF-8\r\n"
 389                 "Server: %s\r\n"
 390                 "Connection: close\r\n"
 391                 ,
 392                 PACKAGE_STRING);
 393         begin_burst();
 394 }
 395
 396 /*
 397  * print ajax response footer
 398  */
 399 void end_ajax_response(void) {
 400         wDumpContent(0);
 401 }
 402
 403
 404
 405 /*
 406  * Wraps a Citadel server command in an AJAX transaction.
 407  */
 408 void ajax_servcmd(void)
 409 {
 410         wcsession *WCC = WC;
 411         int Done = 0;
 412         StrBuf *Buf;
 413         char *junk;
 414         size_t len;
 415
 416         begin_ajax_response();
 417         Buf = NewStrBuf();
 418         serv_puts(bstr("g_cmd"));
 419         StrBuf_ServGetln(Buf);
 420         StrBufAppendBuf(WCC->WBuf, Buf, 0);
 421         StrBufAppendBufPlain(WCC->WBuf, HKEY("\n"), 0);
 422
 423         switch (GetServerStatus(Buf, NULL)) {
 424         case 8:
 425                 serv_puts("\n\n000");
 426                 if ( (StrLength(Buf)==3) &&
 427                      !strcmp(ChrPtr(Buf), "000")) {
 428                         StrBufAppendBufPlain(WCC->WBuf, HKEY("\000"), 0);
 429                         break;
 430                 }
 431         case 1:
 432                 while (!Done) {
 433                         StrBuf_ServGetln(Buf);
 434                         if ( (StrLength(Buf)==3) &&
 435                              !strcmp(ChrPtr(Buf), "000")) {
 436                                 Done = 1;
 437                         }
 438                         StrBufAppendBuf(WCC->WBuf, Buf, 0);
 439                         StrBufAppendBufPlain(WCC->WBuf, HKEY("\n"), 0);
 440                 }
 441                 break;
 442         case 4:
 443                 text_to_server(bstr("g_input"));
 444                 serv_puts("000");
 445                 break;
 446         case 6:
 447                 len = atol(&ChrPtr(Buf)[4]);
 448                 StrBuf_ServGetBLOBBuffered(Buf, len);
 449                 break;
 450         case 7:
 451                 len = atol(&ChrPtr(Buf)[4]);
 452                 junk = malloc(len);
 453                 memset(junk, 0, len);
 454                 serv_write(junk, len);
 455                 free(junk);
 456         }
 457
 458         end_ajax_response();
 459
 460         /*
 461          * This is kind of an ugly hack, but this is the only place it can go.
 462          * If the command was GEXP, then the instant messenger window must be
 463          * running, so reset the "last_pager_check" watchdog timer so
 464          * that page_popup() doesn't try to open it a second time.
 465          */
 466         if (!strncasecmp(bstr("g_cmd"), "GEXP", 4)) {
 467                 WCC->last_pager_check = time(NULL);
 468         }
 469         FreeStrBuf(&Buf);
 470 }
 471
 472
 473 /*
 474  * Helper function for the asynchronous check to see if we need
 475  * to open the instant messenger window.
 476  */
 477 void seconds_since_last_gexp(void)
 478 {
 479         char buf[256];
 480
 481         if ( (time(NULL) - WC->last_pager_check) < 30) {
 482                 wprintf("NO\n");
 483         }
 484         else {
 485                 memset(buf, 0, 5);
 486                 serv_puts("NOOP");
 487                 serv_getln(buf, sizeof buf);
 488                 if (buf[3] == '*') {
 489                         wprintf("YES");
 490                 }
 491                 else {
 492                         wprintf("NO");
 493                 }
 494         }
 495 }
 496
 497
 498
 499 void ReadPostData(void)
 500 {
 501         const char *content_end = NULL;
 502         int body_start = 0;
 503         wcsession *WCC = WC;
 504         StrBuf *content = NULL;
 505
 506         content = NewStrBuf();
 507
 508         StrBufPrintf(content,
 509                      "Content-type: %s\n"
 510                      "Content-length: %ld\n\n",
 511                      ChrPtr(WCC->Hdr->ContentType),
 512                              WCC->Hdr->ContentLength);
 513 /*
 514   hprintf("Content-type: %s\n"
 515   "Content-length: %d\n\n",
 516   ContentType, ContentLength);
 517 */
 518         body_start = StrLength(content);
 519
 520         /** Read the entire input data at once. */
 521         client_read_to(&WCC->Hdr->http_sock,
 522                        content,
 523                        WCC->Hdr->ReadBuf, &WCC->Hdr->Pos,
 524                        WCC->Hdr->ContentLength,
 525                        SLEEPING);
 526
 527         if (!strncasecmp(ChrPtr(WCC->Hdr->ContentType), "application/x-www-form-urlencoded", 33)) {
 528                 StrBufCutLeft(content, body_start);
 529                 ParseURLParams(content);
 530         } else if (!strncasecmp(ChrPtr(WCC->Hdr->ContentType), "multipart", 9)) {
 531                 content_end = ChrPtr(content) +
 532                         WCC->Hdr->ContentLength +
 533                         body_start;
 534                 mime_parser(ChrPtr(content), content_end, *upload_handler, NULL, NULL, NULL, 0);
 535         }
 536         FreeStrBuf(&content);
 537 }
 538
 539
 540 /*
 541  * Entry point for WebCit transaction
 542  */
 543 void session_loop(void)
 544 {
 545         int Flags = 0;
 546         int xhttp;
 547         StrBuf *Buf;
 548
 549         char buf[SIZ];
 550
 551         /*
 552          * We stuff these with the values coming from the client cookies,
 553          * so we can use them to reconnect a timed out session if we have to.
 554          */
 555         wcsession *WCC;
 556
 557
 558         Buf = NewStrBuf();
 559
 560         WCC= WC;
 561
 562         WCC->upload_length = 0;
 563         WCC->upload = NULL;
 564         WCC->is_mobile = 0;
 565         WCC->trailing_javascript = NewStrBuf();
 566         WCC->Hdr->nWildfireHeaders = 0;
 567         if (WCC->Hdr->Handler != NULL)
 568                 Flags = WCC->Hdr->Handler->Flags; /* so we can temporarily add our own... */
 569
 570         if (WCC->Hdr->ContentLength > 0) {
 571                 ReadPostData();
 572         }
 573
 574         /* If there are variables in the URL, we must grab them now */
 575         if (WCC->Hdr->PlainArgs != NULL)
 576                 ParseURLParams(WCC->Hdr->PlainArgs);
 577
 578         /* If the client sent a nonce that is incorrect, kill the request. */
 579         if (havebstr("nonce")) {
 580                 lprintf(9, "Comparing supplied nonce %s to session nonce %ld\n",
 581                         bstr("nonce"), WCC->nonce);
 582                 if (ibstr("nonce") != WCC->nonce) {
 583                         lprintf(9, "Ignoring request with mismatched nonce.\n");
 584                         hprintf("HTTP/1.1 404 Security check failed\r\n");
 585                         hprintf("Content-Type: text/plain\r\n\r\n");
 586                         wprintf("Security check failed.\r\n");
 587                         end_burst();
 588                         goto SKIP_ALL_THIS_CRAP;
 589                 }
 590         }
 591
 592         /*
 593          * If we're not connected to a Citadel server, try to hook up the
 594          * connection now.
 595          */
 596         if (!WCC->connected) {
 597                 if (GetConnected ())
 598                         goto SKIP_ALL_THIS_CRAP;
 599         }
 600
 601
 602         /*
 603          * If we're not logged in, but we have authentication data (either from
 604          * a cookie or from http-auth), try logging in to Citadel using that.
 605          */
 606         if ((!WCC->logged_in)
 607             && (StrLength(WCC->Hdr->c_username) > 0)
 608             && (StrLength(WCC->Hdr->c_password) > 0))
 609         {
 610                 FlushStrBuf(Buf);
 611                 serv_printf("USER %s", ChrPtr(WCC->Hdr->c_username));
 612                 StrBuf_ServGetln(Buf);
 613                 if (GetServerStatus(Buf, NULL) == 3) {
 614                         serv_printf("PASS %s", ChrPtr(WCC->Hdr->c_password));
 615                         StrBuf_ServGetln(Buf);
 616                         if (GetServerStatus(Buf, NULL) == 2) {
 617                                 become_logged_in(WCC->Hdr->c_username,
 618                                                  WCC->Hdr->c_password, Buf);
 619                         } else {
 620                                 /* Should only display when password is wrong */
 621                                 authorization_required(&buf[4]);
 622                                 FreeStrBuf(&Buf);
 623                                 goto SKIP_ALL_THIS_CRAP;
 624                         }
 625                 }
 626         }
 627
 628         xhttp = (WCC->Hdr->eReqType != eGET) &&
 629                 (WCC->Hdr->eReqType != ePOST) &&
 630                 (WCC->Hdr->eReqType != eHEAD);
 631
 632         /*
 633          * If a 'gotofirst' parameter has been specified, attempt to goto that room
 634          * prior to doing anything else.
 635          */
 636         if (havebstr("gotofirst")) {
 637                 int ret;
 638                 ret = gotoroom(sbstr("gotofirst"));     /* do quietly to avoid session output! */
 639                 if ((ret/100) != 2) {
 640                         lprintf(1, "GOTOFIRST: Unable to change to [%s]; Reason: %d\n",
 641                                 bstr("gotofirst"), ret);
 642                 }
 643         }
 644
 645         /*
 646          * If we aren't in any room yet, but we have cookie data telling us where we're
 647          * supposed to be, and 'gotofirst' was not specified, then go there.
 648          */
 649         else if ( (StrLength(WCC->wc_roomname) == 0) && ( (StrLength(WCC->Hdr->c_roomname) > 0) )) {
 650                 lprintf(9, "We are in '%s' but cookie indicates '%s', going there...\n",
 651                         ChrPtr(WCC->wc_roomname),
 652                         ChrPtr(WCC->Hdr->c_roomname)
 653                 );
 654                 int ret;
 655                 ret = gotoroom(WCC->Hdr->c_roomname);   /* do quietly to avoid session output! */
 656                 if ((ret/100) != 2) {
 657                         lprintf(1, "COOKIEGOTO: Unable to change to [%s]; Reason: %d\n",
 658                                 ChrPtr(WCC->Hdr->c_roomname), ret);
 659                 }
 660         }
 661
 662         if (WCC->Hdr->Handler != NULL) {
 663                 if (!WCC->logged_in && ((WCC->Hdr->Handler->Flags & ANONYMOUS) == 0)) {
 664                         display_login(NULL);
 665                 }
 666                 else {
 667                         if ((WCC->Hdr->Handler->Flags & AJAX) != 0)
 668                                 begin_ajax_response();
 669                         WCC->Hdr->Handler->F();
 670                         if ((WCC->Hdr->Handler->Flags & AJAX) != 0)
 671                                 end_ajax_response();
 672                 }
 673         }
 674         /* When all else fais, display the main menu. */
 675         else {
 676                 if (!WCC->logged_in)
 677                         display_login(NULL);
 678                 else
 679                         display_main_menu();
 680         }
 681
 682 SKIP_ALL_THIS_CRAP:
 683         FreeStrBuf(&Buf);
 684         fflush(stdout);
 685         WCC->Hdr->http_host = NULL;
 686 }
 687
 688
 689 /*
 690  * Replacement for sleep() that uses select() in order to avoid SIGALRM
 691  */
 692 void sleeeeeeeeeep(int seconds)
 693 {
 694         struct timeval tv;
 695
 696         tv.tv_sec = seconds;
 697         tv.tv_usec = 0;
 698         select(0, NULL, NULL, NULL, &tv);
 699 }
 700
 701
 702 int ConditionalImportantMesage(StrBuf *Target, WCTemplputParams *TP)
 703 {
 704         wcsession *WCC = WC;
 705         if (WCC != NULL)
 706                 return ((!IsEmptyStr(WCC->ImportantMessage)) ||
 707                         (StrLength(WCC->ImportantMsg) > 0));
 708         else
 709                 return 0;
 710 }
 711
 712 void tmplput_importantmessage(StrBuf *Target, WCTemplputParams *TP)
 713 {
 714         wcsession *WCC = WC;
 715
 716         if (WCC != NULL) {
 717                 if (!IsEmptyStr(WCC->ImportantMessage)) {
 718                         StrEscAppend(Target, NULL, WCC->ImportantMessage, 0, 0);
 719                         WCC->ImportantMessage[0] = '\0';
 720                 }
 721                 else if (StrLength(WCC->ImportantMsg) > 0) {
 722                         StrEscAppend(Target, WCC->ImportantMsg, NULL, 0, 0);
 723                         FlushStrBuf(WCC->ImportantMsg);
 724                 }
 725         }
 726 }
 727
 728 void tmplput_trailing_javascript(StrBuf *Target, WCTemplputParams *TP)
 729 {
 730         wcsession *WCC = WC;
 731
 732         if (WCC != NULL)
 733                 StrBufAppendTemplate(Target, TP, WCC->trailing_javascript, 0);
 734 }
 735
 736 void tmplput_csslocal(StrBuf *Target, WCTemplputParams *TP)
 737 {
 738         StrBufAppendBuf(Target,
 739                         csslocal, 0);
 740 }
 741
 742 extern char static_local_dir[PATH_MAX];
 743
 744
 745 void
 746 InitModule_WEBCIT
 747 (void)
 748 {
 749         char dir[SIZ];
 750         WebcitAddUrlHandler(HKEY("blank"), blank_page, ANONYMOUS|COOKIEUNNEEDED|ISSTATIC);
 751         WebcitAddUrlHandler(HKEY("do_template"), url_do_template, ANONYMOUS);
 752         WebcitAddUrlHandler(HKEY("sslg"), seconds_since_last_gexp, AJAX|LOGCHATTY);
 753         WebcitAddUrlHandler(HKEY("ajax_servcmd"), ajax_servcmd, 0);
 754         WebcitAddUrlHandler(HKEY("webcit"), blank_page, URLNAMESPACE);
 755
 756         RegisterConditional(HKEY("COND:IMPMSG"), 0, ConditionalImportantMesage, CTX_NONE);
 757         RegisterNamespace("CSSLOCAL", 0, 0, tmplput_csslocal, CTX_NONE);
 758         RegisterNamespace("IMPORTANTMESSAGE", 0, 0, tmplput_importantmessage, CTX_NONE);
 759         RegisterNamespace("TRAILING_JAVASCRIPT", 0, 0, tmplput_trailing_javascript, CTX_NONE);
 760
 761         snprintf(dir, SIZ, "%s/static.local/webcit.css", static_local_dir);
 762         if (!access(dir, R_OK)) {
 763                 lprintf(9, "Using local Stylesheet [%s]\n", dir);
 764                 csslocal = NewStrBufPlain(HKEY("<link href=\"static.local/webcit.css\" rel=\"stylesheet\" type=\"text/css\">"));
 765         }
 766         else
 767                 lprintf(9, "Didn't find site local Stylesheet [%s]\n", dir);
 768
 769 }
 770
 771 void
 772 ServerStartModule_WEBCIT
 773 (void)
 774 {
 775         HandlerHash = NewHash(1, NULL);
 776 }
 777
 778
 779 void
 780 ServerShutdownModule_WEBCIT
 781 (void)
 782 {
 783         FreeStrBuf(&csslocal);
 784         DeleteHash(&HandlerHash);
 785 }
 786
 787
 788
 789 void
 790 SessionNewModule_WEBCIT
 791 (wcsession *sess)
 792 {
 793         sess->ImportantMsg = NewStrBuf();
 794         sess->WBuf = NewStrBuf();
 795         sess->HBuf = NewStrBuf();
 796 }
 797
 798 void
 799 SessionDetachModule_WEBCIT
 800 (wcsession *sess)
 801 {
 802         DeleteHash(&sess->Hdr->urlstrings);// TODO?
 803         if (sess->upload_length > 0) {
 804                 free(sess->upload);
 805                 sess->upload_length = 0;
 806         }
 807         FreeStrBuf(&sess->trailing_javascript);
 808
 809         if (StrLength(sess->WBuf) > SIZ * 30) /* Bigger than 120K? release. */
 810         {
 811                 FreeStrBuf(&sess->WBuf);
 812                 sess->WBuf = NewStrBuf();
 813         }
 814         else
 815                 FlushStrBuf(sess->WBuf);
 816         FlushStrBuf(sess->HBuf);
 817 }
 818
 819 void
 820 SessionDestroyModule_WEBCIT
 821 (wcsession *sess)
 822 {
 823         FreeStrBuf(&sess->WBuf);
 824         FreeStrBuf(&sess->HBuf);
 825         FreeStrBuf(&sess->ImportantMsg);
 826 }
 827