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, WCC->wc_username,
 161                         WCC->wc_password, WCC->wc_roomname);
 162
 163         if (unset_cookies) {
 164                 hprintf("Set-cookie: webcit=%s; path=/\r\n", unset);
 165         } else {
 166                 hprintf("Set-cookie: webcit=%s; path=/\r\n", cookie);
 167                 if (server_cookie != NULL) {
 168                         hprintf("%s\n", server_cookie);
 169                 }
 170         }
 171
 172         if (do_htmlhead) {
 173                 begin_burst();
 174                 do_template("head", NULL);
 175
 176                 /* check for ImportantMessages (these display in a div overlaying the main screen) */
 177                 if (!IsEmptyStr(WCC->ImportantMessage)) {
 178                         wprintf("<div id=\"important_message\">\n"
 179                                 "<span class=\"imsg\">");
 180                         StrEscAppend(WCC->WBuf, NULL, WCC->ImportantMessage, 0, 0);
 181                         wprintf("</span><br />\n"
 182                                 "</div>\n"
 183                         );
 184                         StrBufAppendBufPlain(WCC->trailing_javascript,
 185                                              HKEY("setTimeout('hide_imsg_popup()', 5000);       \n"),
 186                                              0
 187                         );
 188                         WCC->ImportantMessage[0] = 0;
 189                 }
 190                 else if (StrLength(WCC->ImportantMsg) > 0) {
 191                         wprintf("<div id=\"important_message\">\n"
 192                                 "<span class=\"imsg\">");
 193                         StrEscAppend(WCC->WBuf, WCC->ImportantMsg, NULL, 0, 0);
 194                         wprintf("</span><br />\n"
 195                                 "</div>\n"
 196                         );
 197                         StrBufAppendBufPlain(WCC->trailing_javascript,
 198                                              HKEY("setTimeout('hide_imsg_popup()', 5000);       \n"),
 199                                              0
 200                         );
 201                         FlushStrBuf(WCC->ImportantMsg);
 202                 }
 203                 if ( (WCC->logged_in) && (!unset_cookies) ) {
 204                         /*DoTemplate(HKEY("iconbar"), NULL, &NoCtx);*/
 205                         page_popup();
 206                 }
 207
 208                 if (do_room_banner == 1) {
 209                         wprintf("<div id=\"banner\">\n");
 210                         embed_room_banner(NULL, navbar_default);
 211                         wprintf("</div>\n");
 212                 }
 213         }
 214
 215         if (do_room_banner == 1) {
 216                 wprintf("<div id=\"content\">\n");
 217         }
 218 }
 219
 220 void output_custom_content_header(const char *ctype) {
 221   hprintf("HTTP/1.1 200 OK\r\n");
 222   hprintf("Content-type: %s; charset=utf-8\r\n",ctype);
 223   hprintf("Server: %s / %s\r\n", PACKAGE_STRING, ChrPtr(WC->serv_info->serv_software));
 224   hprintf("Connection: close\r\n");
 225 }
 226
 227
 228 /*
 229  * Generic function to do an HTTP redirect.  Easy and fun.
 230  */
 231 void http_redirect(const char *whichpage) {
 232         hprintf("HTTP/1.1 302 Moved Temporarily\n");
 233         hprintf("Location: %s\r\n", whichpage);
 234         hprintf("URI: %s\r\n", whichpage);
 235         hprintf("Content-type: text/html; charset=utf-8\r\n");
 236         wprintf("<html><body>");
 237         wprintf("Go <a href=\"%s\">here</A>.", whichpage);
 238         wprintf("</body></html>\n");
 239         end_burst();
 240 }
 241
 242
 243
 244 /*
 245  * Output a piece of content to the web browser using conformant HTTP and MIME semantics
 246  */
 247 void http_transmit_thing(const char *content_type,
 248                          int is_static) {
 249
 250 #ifndef TECH_PREVIEW
 251         lprintf(9, "http_transmit_thing(%s)%s\n",
 252                 content_type,
 253                 (is_static ? " (static)" : "")
 254         );
 255 #endif
 256         output_headers(0, 0, 0, 0, 0, is_static);
 257
 258         hprintf("Content-type: %s\r\n"
 259                 "Server: %s\r\n"
 260                 "Connection: close\r\n",
 261                 content_type,
 262                 PACKAGE_STRING);
 263
 264         end_burst();
 265 }
 266
 267 /*
 268  * print menu box like used in the floor view or admin interface.
 269  * This function takes pair of strings as va_args,
 270  * Title        Title string of the box
 271  * Class        CSS Class for the box
 272  * nLines       How many string pairs should we print? (URL, UrlText)
 273  * ...          Pairs of URL Strings and their Names
 274  */
 275 void print_menu_box(char* Title, char *Class, int nLines, ...)
 276 {
 277         va_list arg_list;
 278         long i;
 279
 280         svput("BOXTITLE", WCS_STRING, Title);
 281         do_template("beginboxx", NULL);
 282
 283         wprintf("<ul class=\"%s\">", Class);
 284
 285         va_start(arg_list, nLines);
 286         for (i = 0; i < nLines; ++i)
 287         {
 288                 wprintf("<li><a href=\"%s\">", va_arg(arg_list, char *));
 289                 wprintf((char *) va_arg(arg_list, char *));
 290                 wprintf("</a></li>\n");
 291         }
 292         va_end (arg_list);
 293
 294         wprintf("</a></li>\n");
 295
 296         wprintf("</ul>");
 297
 298         do_template("endbox", NULL);
 299 }
 300
 301
 302
 303 /*
 304  * Convenience functions to display a page containing only a string
 305  *
 306  * titlebarcolor        color of the titlebar of the frame
 307  * titlebarmsg          text to display in the title bar
 308  * messagetext          body of the box
 309  */
 310 void convenience_page(const char *titlebarcolor, const char *titlebarmsg, const char *messagetext)
 311 {
 312         hprintf("HTTP/1.1 200 OK\n");
 313         output_headers(1, 1, 2, 0, 0, 0);
 314         wprintf("<div id=\"banner\">\n");
 315         wprintf("<table width=100%% border=0 bgcolor=\"#%s\"><tr><td>", titlebarcolor);
 316         wprintf("<span class=\"titlebar\">%s</span>\n", titlebarmsg);
 317         wprintf("</td></tr></table>\n");
 318         wprintf("</div>\n<div id=\"content\">\n");
 319         escputs(messagetext);
 320
 321         wprintf("<hr />\n");
 322         wDumpContent(1);
 323 }
 324
 325
 326 /*
 327  * Display a blank page.
 328  */
 329 void blank_page(void) {
 330         output_headers(1, 1, 0, 0, 0, 0);
 331         wDumpContent(2);
 332 }
 333
 334
 335 /*
 336  * A template has been requested
 337  */
 338 void url_do_template(void) {
 339         const StrBuf *MimeType;
 340         const StrBuf *Tmpl = sbstr("template");
 341         begin_burst();
 342         MimeType = DoTemplate(SKEY(Tmpl), NULL, &NoCtx);
 343         http_transmit_thing(ChrPtr(MimeType), 0);
 344 }
 345
 346
 347
 348 /*
 349  * convenience function to indicate success
 350  */
 351 void display_success(char *successmessage)
 352 {
 353         convenience_page("007700", "OK", successmessage);
 354 }
 355
 356
 357 /*
 358  * Authorization required page
 359  * This is probably temporary and should be revisited
 360  */
 361 void authorization_required(const char *message)
 362 {
 363         hprintf("HTTP/1.1 401 Authorization Required\r\n");
 364         hprintf("WWW-Authenticate: Basic realm=\"%s\"\r\n", ChrPtr(WC->serv_info->serv_humannode));
 365         hprintf("Content-Type: text/html\r\n");
 366         wprintf("<h1>");
 367         wprintf(_("Authorization Required"));
 368         wprintf("</h1>\r\n");
 369         wprintf(_("The resource you requested requires a valid username and password. "
 370                 "You could not be logged in: %s\n"), message);
 371         wDumpContent(0);
 372
 373 }
 374
 375 /*
 376  * Convenience functions to wrap around asynchronous ajax responses
 377  */
 378 void begin_ajax_response(void) {
 379         wcsession *WCC = WC;
 380
 381         FlushStrBuf(WCC->HBuf);
 382         output_headers(0, 0, 0, 0, 0, 0);
 383
 384         hprintf("Content-type: text/html; charset=UTF-8\r\n"
 385                 "Server: %s\r\n"
 386                 "Connection: close\r\n"
 387                 ,
 388                 PACKAGE_STRING);
 389         begin_burst();
 390 }
 391
 392 /*
 393  * print ajax response footer
 394  */
 395 void end_ajax_response(void) {
 396         wDumpContent(0);
 397 }
 398
 399         /* If it's a "force 404" situation then display the error and bail. */
 400 void do_404(void)
 401 {
 402         hprintf("HTTP/1.1 404 Not found\r\n");
 403         hprintf("Content-Type: text/plain\r\n");
 404         wprintf("Not found\r\n");
 405         end_burst();
 406 }
 407
 408
 409 /*
 410  * Wraps a Citadel server command in an AJAX transaction.
 411  */
 412 void ajax_servcmd(void)
 413 {
 414         wcsession *WCC = WC;
 415         int Done = 0;
 416         StrBuf *Buf;
 417         char *junk;
 418         size_t len;
 419
 420         begin_ajax_response();
 421         Buf = NewStrBuf();
 422         serv_puts(bstr("g_cmd"));
 423         StrBuf_ServGetln(Buf);
 424         StrBufAppendBuf(WCC->WBuf, Buf, 0);
 425         StrBufAppendBufPlain(WCC->WBuf, HKEY("\n"), 0);
 426
 427         switch (GetServerStatus(Buf, NULL)) {
 428         case 8:
 429                 serv_puts("\n\n000");
 430                 if ( (StrLength(Buf)==3) &&
 431                      !strcmp(ChrPtr(Buf), "000")) {
 432                         StrBufAppendBufPlain(WCC->WBuf, HKEY("\000"), 0);
 433                         break;
 434                 }
 435         case 1:
 436                 while (!Done) {
 437                         StrBuf_ServGetln(Buf);
 438                         if ( (StrLength(Buf)==3) &&
 439                              !strcmp(ChrPtr(Buf), "000")) {
 440                                 Done = 1;
 441                         }
 442                         StrBufAppendBuf(WCC->WBuf, Buf, 0);
 443                         StrBufAppendBufPlain(WCC->WBuf, HKEY("\n"), 0);
 444                 }
 445                 break;
 446         case 4:
 447                 text_to_server(bstr("g_input"));
 448                 serv_puts("000");
 449                 break;
 450         case 6:
 451                 len = atol(&ChrPtr(Buf)[4]);
 452                 StrBuf_ServGetBLOBBuffered(Buf, len);
 453                 break;
 454         case 7:
 455                 len = atol(&ChrPtr(Buf)[4]);
 456                 junk = malloc(len);
 457                 memset(junk, 0, len);
 458                 serv_write(junk, len);
 459                 free(junk);
 460         }
 461
 462         end_ajax_response();
 463
 464         /*
 465          * This is kind of an ugly hack, but this is the only place it can go.
 466          * If the command was GEXP, then the instant messenger window must be
 467          * running, so reset the "last_pager_check" watchdog timer so
 468          * that page_popup() doesn't try to open it a second time.
 469          */
 470         if (!strncasecmp(bstr("g_cmd"), "GEXP", 4)) {
 471                 WCC->last_pager_check = time(NULL);
 472         }
 473         FreeStrBuf(&Buf);
 474 }
 475
 476
 477 /*
 478  * Helper function for the asynchronous check to see if we need
 479  * to open the instant messenger window.
 480  */
 481 void seconds_since_last_gexp(void)
 482 {
 483         char buf[256];
 484
 485         if ( (time(NULL) - WC->last_pager_check) < 30) {
 486                 wprintf("NO\n");
 487         }
 488         else {
 489                 memset(buf, 0, 5);
 490                 serv_puts("NOOP");
 491                 serv_getln(buf, sizeof buf);
 492                 if (buf[3] == '*') {
 493                         wprintf("YES");
 494                 }
 495                 else {
 496                         wprintf("NO");
 497                 }
 498         }
 499 }
 500
 501
 502
 503 void ReadPostData(void)
 504 {
 505         const char *content_end = NULL;
 506         int body_start = 0;
 507         wcsession *WCC = WC;
 508         StrBuf *content = NULL;
 509
 510         content = NewStrBuf();
 511
 512         StrBufPrintf(content,
 513                      "Content-type: %s\n"
 514                      "Content-length: %ld\n\n",
 515                      ChrPtr(WCC->Hdr->ContentType),
 516                              WCC->Hdr->ContentLength);
 517 /*
 518   hprintf("Content-type: %s\n"
 519   "Content-length: %d\n\n",
 520   ContentType, ContentLength);
 521 */
 522         body_start = StrLength(content);
 523
 524         /** Read the entire input data at once. */
 525         client_read_to(&WCC->Hdr->http_sock,
 526                        content,
 527                        WCC->Hdr->ReadBuf, &WCC->Hdr->Pos,
 528                        WCC->Hdr->ContentLength,
 529                        SLEEPING);
 530
 531         if (!strncasecmp(ChrPtr(WCC->Hdr->ContentType), "application/x-www-form-urlencoded", 33)) {
 532                 StrBufCutLeft(content, body_start);
 533                 ParseURLParams(content);
 534         } else if (!strncasecmp(ChrPtr(WCC->Hdr->ContentType), "multipart", 9)) {
 535                 content_end = ChrPtr(content) +
 536                         WCC->Hdr->ContentLength +
 537                         body_start;
 538                 mime_parser(ChrPtr(content), content_end, *upload_handler, NULL, NULL, NULL, 0);
 539         }
 540         FreeStrBuf(&content);
 541 }
 542
 543
 544 /*
 545  * Entry point for WebCit transaction
 546  */
 547 void session_loop(void)
 548 {
 549         int Flags = 0;
 550         int xhttp;
 551         StrBuf *Buf;
 552
 553         char buf[SIZ];
 554
 555         /*
 556          * We stuff these with the values coming from the client cookies,
 557          * so we can use them to reconnect a timed out session if we have to.
 558          */
 559         wcsession *WCC;
 560
 561
 562         Buf = NewStrBuf();
 563
 564         WCC= WC;
 565
 566         WCC->upload_length = 0;
 567         WCC->upload = NULL;
 568         WCC->is_mobile = 0;
 569         WCC->trailing_javascript = NewStrBuf();
 570         WCC->Hdr->nWildfireHeaders = 0;
 571         if (WCC->Hdr->Handler != NULL)
 572                 Flags = WCC->Hdr->Handler->Flags; /* so we can temporarily add our own... */
 573
 574         if (WCC->Hdr->ContentLength > 0) {
 575                 ReadPostData();
 576         }
 577
 578         /* If there are variables in the URL, we must grab them now */
 579         if (WCC->Hdr->PlainArgs != NULL)
 580                 ParseURLParams(WCC->Hdr->PlainArgs);
 581
 582         /* If the client sent a nonce that is incorrect, kill the request. */
 583         if (havebstr("nonce")) {
 584                 lprintf(9, "Comparing supplied nonce %s to session nonce %ld\n",
 585                         bstr("nonce"), WCC->nonce);
 586                 if (ibstr("nonce") != WCC->nonce) {
 587                         lprintf(9, "Ignoring request with mismatched nonce.\n");
 588                         hprintf("HTTP/1.1 404 Security check failed\r\n");
 589                         hprintf("Content-Type: text/plain\r\n\r\n");
 590                         wprintf("Security check failed.\r\n");
 591                         end_burst();
 592                         goto SKIP_ALL_THIS_CRAP;
 593                 }
 594         }
 595
 596         /*
 597          * If we're not connected to a Citadel server, try to hook up the
 598          * connection now.
 599          */
 600         if (!WCC->connected) {
 601                 if (GetConnected ())
 602                         goto SKIP_ALL_THIS_CRAP;
 603         }
 604
 605
 606         /*
 607          * If we're not logged in, but we have HTTP Authentication data,
 608          * try logging in to Citadel using that.
 609          */
 610         if ((!WCC->logged_in)
 611             && (StrLength(WCC->Hdr->c_username) > 0)
 612             && (StrLength(WCC->Hdr->c_password) > 0))
 613         {
 614                 FlushStrBuf(Buf);
 615                 serv_printf("USER %s", ChrPtr(WCC->Hdr->c_username));
 616                 StrBuf_ServGetln(Buf);
 617                 if (GetServerStatus(Buf, NULL) == 3) {
 618                         serv_printf("PASS %s", ChrPtr(WCC->Hdr->c_password));
 619                         StrBuf_ServGetln(Buf);
 620                         if (GetServerStatus(Buf, NULL) == 2) {
 621                                 become_logged_in(WCC->Hdr->c_username,
 622                                                  WCC->Hdr->c_password, Buf);
 623                         } else {
 624                                 /* Should only display when password is wrong */
 625                                 authorization_required(&buf[4]);
 626                                 FreeStrBuf(&Buf);
 627                                 goto SKIP_ALL_THIS_CRAP;
 628                         }
 629                 }
 630         }
 631
 632         xhttp = (WCC->Hdr->eReqType != eGET) &&
 633                 (WCC->Hdr->eReqType != ePOST) &&
 634                 (WCC->Hdr->eReqType != eHEAD);
 635
 636         /*
 637          * If we're not logged in, but we have username and password cookies
 638          * supplied by the browser, try using them to log in.
 639          */
 640         if ((!WCC->logged_in)
 641            && (StrLength(WCC->Hdr->c_username)>0)
 642            && (StrLength(WCC->Hdr->c_password)>0)) {
 643                 ReEstablish_Session();
 644         }
 645
 646         /*
 647          * If a 'gotofirst' parameter has been specified, attempt to goto that room
 648          * prior to doing anything else.
 649          */
 650         if (havebstr("gotofirst")) {
 651                 int ret;
 652                 ret = gotoroom(sbstr("gotofirst"));     /* do this quietly to avoid session output! */
 653                 if (ret != 0)
 654                         lprintf(1, "GOTOFIRST: Unable to change to [%s]; Reason: %d\n", bstr("gotofirst"), ret);
 655         }
 656
 657         if (WCC->Hdr->Handler != NULL) {
 658                 if (!WCC->logged_in && ((WCC->Hdr->Handler->Flags & ANONYMOUS) == 0)) {
 659                         display_login(NULL);
 660                 }
 661                 else {
 662                         if ((WCC->Hdr->Handler->Flags & AJAX) != 0)
 663                                 begin_ajax_response();
 664                         WCC->Hdr->Handler->F();
 665                         if ((WCC->Hdr->Handler->Flags & AJAX) != 0)
 666                                 end_ajax_response();
 667                 }
 668         }
 669         /* When all else fais, display the main menu. */
 670         else {
 671                 if (!WCC->logged_in)
 672                         display_login(NULL);
 673                 else
 674                         display_main_menu();
 675         }
 676
 677 SKIP_ALL_THIS_CRAP:
 678         if (WCC->SavePrefsToServer) {
 679                 save_preferences();
 680                 WCC->SavePrefsToServer = 0;
 681         }
 682         FreeStrBuf(&Buf);
 683         fflush(stdout);
 684         WCC->Hdr->http_host = NULL;
 685 }
 686
 687
 688 /*
 689  * Replacement for sleep() that uses select() in order to avoid SIGALRM
 690  */
 691 void sleeeeeeeeeep(int seconds)
 692 {
 693         struct timeval tv;
 694
 695         tv.tv_sec = seconds;
 696         tv.tv_usec = 0;
 697         select(0, NULL, NULL, NULL, &tv);
 698 }
 699
 700
 701 int ConditionalImportantMesage(StrBuf *Target, WCTemplputParams *TP)
 702 {
 703         wcsession *WCC = WC;
 704         if (WCC != NULL)
 705                 return ((!IsEmptyStr(WCC->ImportantMessage)) ||
 706                         (StrLength(WCC->ImportantMsg) > 0));
 707         else
 708                 return 0;
 709 }
 710
 711 void tmplput_importantmessage(StrBuf *Target, WCTemplputParams *TP)
 712 {
 713         wcsession *WCC = WC;
 714
 715         if (WCC != NULL) {
 716                 if (!IsEmptyStr(WCC->ImportantMessage)) {
 717                         StrEscAppend(Target, NULL, WCC->ImportantMessage, 0, 0);
 718                         WCC->ImportantMessage[0] = '\0';
 719                 }
 720                 else if (StrLength(WCC->ImportantMsg) > 0) {
 721                         StrEscAppend(Target, WCC->ImportantMsg, NULL, 0, 0);
 722                         FlushStrBuf(WCC->ImportantMsg);
 723                 }
 724         }
 725 }
 726
 727 void tmplput_trailing_javascript(StrBuf *Target, WCTemplputParams *TP)
 728 {
 729         wcsession *WCC = WC;
 730
 731         if (WCC != NULL)
 732                 StrBufAppendTemplate(Target, TP, WCC->trailing_javascript, 0);
 733 }
 734
 735 void tmplput_csslocal(StrBuf *Target, WCTemplputParams *TP)
 736 {
 737         StrBufAppendBuf(Target,
 738                         csslocal, 0);
 739 }
 740
 741 extern char static_local_dir[PATH_MAX];
 742
 743
 744 void
 745 InitModule_WEBCIT
 746 (void)
 747 {
 748         char dir[SIZ];
 749         WebcitAddUrlHandler(HKEY("404"), do_404, ANONYMOUS|COOKIEUNNEEDED);
 750         WebcitAddUrlHandler(HKEY("blank"), blank_page, ANONYMOUS|COOKIEUNNEEDED|ISSTATIC);
 751
 752
 753         WebcitAddUrlHandler(HKEY("blank"), blank_page, ANONYMOUS);
 754         WebcitAddUrlHandler(HKEY("do_template"), url_do_template, ANONYMOUS);
 755         WebcitAddUrlHandler(HKEY("sslg"), seconds_since_last_gexp, AJAX|LOGCHATTY);
 756         WebcitAddUrlHandler(HKEY("ajax_servcmd"), ajax_servcmd, 0);
 757
 758         RegisterConditional(HKEY("COND:IMPMSG"), 0, ConditionalImportantMesage, CTX_NONE);
 759         RegisterNamespace("CSSLOCAL", 0, 0, tmplput_csslocal, CTX_NONE);
 760         RegisterNamespace("IMPORTANTMESSAGE", 0, 0, tmplput_importantmessage, CTX_NONE);
 761         RegisterNamespace("TRAILING_JAVASCRIPT", 0, 0, tmplput_trailing_javascript, CTX_NONE);
 762
 763         snprintf(dir, SIZ, "%s/static.local/webcit.css", static_local_dir);
 764         if (!access(dir, R_OK)) {
 765                 lprintf(9, "Using local Stylesheet [%s]\n", dir);
 766                 csslocal = NewStrBufPlain(HKEY("<link href=\"static.local/webcit.css\" rel=\"stylesheet\" type=\"text/css\">"));
 767         }
 768         else
 769                 lprintf(9, "Didn't find site local Stylesheet [%s]\n", dir);
 770
 771 }
 772
 773 void
 774 ServerStartModule_WEBCIT
 775 (void)
 776 {
 777         HandlerHash = NewHash(1, NULL);
 778 }
 779
 780
 781 void
 782 ServerShutdownModule_WEBCIT
 783 (void)
 784 {
 785         FreeStrBuf(&csslocal);
 786         DeleteHash(&HandlerHash);
 787 }
 788
 789
 790
 791 void
 792 SessionNewModule_WEBCIT
 793 (wcsession *sess)
 794 {
 795         sess->ImportantMsg = NewStrBuf();
 796         sess->WBuf = NewStrBuf();
 797         sess->HBuf = NewStrBuf();
 798 }
 799
 800 void
 801 SessionDetachModule_WEBCIT
 802 (wcsession *sess)
 803 {
 804         DeleteHash(&sess->Hdr->urlstrings);// TODO?
 805         if (sess->upload_length > 0) {
 806                 free(sess->upload);
 807                 sess->upload_length = 0;
 808         }
 809         FreeStrBuf(&sess->trailing_javascript);
 810
 811         if (StrLength(sess->WBuf) > SIZ * 30) /* Bigger than 120K? release. */
 812         {
 813                 FreeStrBuf(&sess->WBuf);
 814                 sess->WBuf = NewStrBuf();
 815         }
 816         else
 817                 FlushStrBuf(sess->WBuf);
 818         FlushStrBuf(sess->HBuf);
 819 }
 820
 821 void
 822 SessionDestroyModule_WEBCIT
 823 (wcsession *sess)
 824 {
 825         FreeStrBuf(&sess->WBuf);
 826         FreeStrBuf(&sess->HBuf);
 827         FreeStrBuf(&sess->ImportantMsg);
 828 }
 829