webcit/auth.c

   1 /*
   2  * These functions handle authentication of users to a Citadel server.
   3  *
   4  * Copyright (c) 1996-2012 by the citadel.org team
   5  *
   6  * This program is open source software: you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License, version 3.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  */
  14
  15 #include "webcit.h"
  16 #include "webserver.h"
  17 #include <ctype.h>
  18
  19 extern uint32_t hashlittle( const void *key, size_t length, uint32_t initval);
  20
  21 /*
  22  * Access level definitions.  This is initialized from a function rather than a
  23  * static array so that the strings may be localized.
  24  */
  25 char *axdefs[7];
  26
  27 void initialize_axdefs(void) {
  28
  29         /* an erased user */
  30         axdefs[0] = _("Deleted");
  31
  32         /* a new user */
  33         axdefs[1] = _("New User");
  34
  35         /* a trouble maker */
  36         axdefs[2] = _("Problem User");
  37
  38         /* user with normal privileges */
  39         axdefs[3] = _("Local User");
  40
  41         /* a user that may access network resources */
  42         axdefs[4] = _("Network User");
  43
  44         /* a moderator */
  45         axdefs[5] = _("Preferred User");
  46
  47         /* chief */
  48         axdefs[6] = _("Aide");
  49 }
  50
  51
  52
  53 /*
  54  * Display the login screen
  55  * mesg = the error message if last attempt failed.
  56  */
  57 void display_login(void)
  58 {
  59         begin_burst();
  60         output_headers(1, 0, 0, 0, 1, 0);
  61         do_template("login");
  62         end_burst();
  63 }
  64
  65
  66
  67
  68
  69 /* Initialize the session
  70  *
  71  * This function needs to get called whenever the session changes from
  72  * not-logged-in to logged-in, either by an explicit login by the user or
  73  * by a timed-out session automatically re-establishing with a little help
  74  * from the browser cookie.  Either way, we need to load access controls and
  75  * preferences from the server.
  76  *
  77  * user                 the username
  78  * pass                 his password
  79  * serv_response        The parameters returned from a Citadel USER or NEWU command
  80  */
  81 void become_logged_in(const StrBuf *user, const StrBuf *pass, StrBuf *serv_response)
  82 {
  83         wcsession *WCC = WC;
  84         StrBuf *Buf;
  85         StrBuf *FloorDiv;
  86
  87         WCC->logged_in = 1;
  88
  89         if (WCC->wc_fullname == NULL)
  90                 WCC->wc_fullname = NewStrBufPlain(NULL, StrLength(serv_response));
  91         StrBufExtract_token(WCC->wc_fullname, serv_response, 0, '|');
  92         StrBufCutLeft(WCC->wc_fullname, 4 );
  93
  94         if (WCC->wc_username == NULL)
  95                 WCC->wc_username = NewStrBufDup(user);
  96         else {
  97                 FlushStrBuf(WCC->wc_username);
  98                 StrBufAppendBuf(WCC->wc_username, user, 0);
  99         }
 100
 101         if (WCC->wc_password == NULL)
 102                 WCC->wc_password = NewStrBufDup(pass);
 103         else {
 104                 FlushStrBuf(WCC->wc_password);
 105                 StrBufAppendBuf(WCC->wc_password, pass, 0);
 106         }
 107
 108         WCC->axlevel = StrBufExtract_int(serv_response, 1, '|');
 109         if (WCC->axlevel >= 6) {
 110                 WCC->is_aide = 1;
 111         }
 112
 113         load_preferences();
 114
 115         Buf = NewStrBuf();
 116         serv_puts("CHEK");
 117         StrBuf_ServGetln(Buf);
 118         if (GetServerStatus(Buf, NULL) == 2) {
 119                 const char *pch;
 120
 121                 pch = ChrPtr(Buf) + 4;
 122                 /*WCC->new_mail  =*/ StrBufExtractNext_long(Buf, &pch, '|');
 123                 WCC->need_regi = StrBufExtractNext_long(Buf, &pch, '|');
 124                 WCC->need_vali = StrBufExtractNext_long(Buf, &pch, '|');
 125                 if (WCC->cs_inet_email == NULL)
 126                         WCC->cs_inet_email  = NewStrBuf();
 127                 StrBufExtract_NextToken(WCC->cs_inet_email, Buf, &pch, '|');
 128         }
 129         get_preference("floordiv_expanded", &FloorDiv);
 130         WCC->floordiv_expanded = FloorDiv;
 131         FreeStrBuf(&Buf);
 132         FlushRoomlist();
 133 }
 134
 135
 136 /*
 137  * modal/ajax version of 'login' (username and password)
 138  */
 139 void ajax_login_username_password(void) {
 140         StrBuf *Buf = NewStrBuf();
 141
 142         serv_printf("USER %s", bstr("name"));
 143         StrBuf_ServGetln(Buf);
 144         if (GetServerStatus(Buf, NULL) == 3) {
 145                 serv_printf("PASS %s", bstr("pass"));
 146                 StrBuf_ServGetln(Buf);
 147                 if (GetServerStatus(Buf, NULL) == 2) {
 148                         become_logged_in(sbstr("name"), sbstr("pass"), Buf);
 149                 }
 150         }
 151
 152         /* The client is expecting to read back a citadel protocol response */
 153         wc_printf("%s", ChrPtr(Buf));
 154         FreeStrBuf(&Buf);
 155 }
 156
 157
 158
 159 /*
 160  * modal/ajax version of 'new user' (username and password)
 161  */
 162 void ajax_login_newuser(void) {
 163         StrBuf *NBuf = NewStrBuf();
 164         StrBuf *SBuf = NewStrBuf();
 165
 166         serv_printf("NEWU %s", bstr("name"));
 167         StrBuf_ServGetln(NBuf);
 168         if (GetServerStatus(NBuf, NULL) == 2) {
 169                 become_logged_in(sbstr("name"), sbstr("pass"), NBuf);
 170                 serv_printf("SETP %s", bstr("pass"));
 171                 StrBuf_ServGetln(SBuf);
 172         }
 173
 174         /* The client is expecting to read back a citadel protocol response */
 175         wc_printf("%s", ChrPtr(NBuf));
 176         FreeStrBuf(&NBuf);
 177         FreeStrBuf(&SBuf);
 178 }
 179
 180
 181
 182 /*
 183  * Try to create an account manually after an OpenID was verified
 184  */
 185 void openid_manual_create(void)
 186 {
 187         StrBuf *Buf;
 188
 189         /* Did the user change his mind?  Pack up and go home. */
 190         if (havebstr("exit_action")) {
 191                 begin_burst();
 192                 output_headers(1, 0, 0, 0, 1, 0);
 193                 do_template("authpopup_finished");
 194                 end_burst();
 195                 return;
 196         }
 197
 198
 199         /* Ok, let's give this a try.  Can we create the new user? */
 200
 201         Buf = NewStrBuf();
 202         serv_printf("OIDC %s", bstr("name"));
 203         StrBuf_ServGetln(Buf);
 204         if (GetServerStatus(Buf, NULL) == 2) {
 205                 StrBuf *gpass;
 206
 207                 gpass = NewStrBuf();
 208                 serv_puts("SETP GENERATE_RANDOM_PASSWORD");
 209                 StrBuf_ServGetln(gpass);
 210                 StrBufCutLeft(gpass, 4);
 211                 become_logged_in(sbstr("name"), gpass, Buf);
 212                 FreeStrBuf(&gpass);
 213         }
 214         FreeStrBuf(&Buf);
 215
 216         /* Did we manage to log in?  If so, continue with the normal flow... */
 217         if (WC->logged_in) {
 218                 if (WC->logged_in) {
 219                         begin_burst();
 220                         output_headers(1, 0, 0, 0, 1, 0);
 221                         do_template("authpopup_finished");
 222                         end_burst();
 223                 }
 224         } else {
 225                 /* Still no good!  Go back to teh dialog to select a username */
 226                 const StrBuf *Buf;
 227                 putbstr("__claimed_id", NewStrBufDup(sbstr("openid_url")));
 228                 Buf = sbstr("name");
 229                 if (StrLength(Buf) > 0)
 230                         putbstr("__username", NewStrBufDup(Buf));
 231                 begin_burst();
 232                 output_headers(1, 0, 0, 0, 1, 0);
 233                 wc_printf("<html><body>");
 234                 do_template("openid_manual_create");
 235                 wc_printf("</body></html>");
 236                 end_burst();
 237         }
 238
 239 }
 240
 241
 242 /*
 243  * Perform authentication using OpenID
 244  * assemble the checkid_setup request and then redirect to the user's identity provider
 245  */
 246 void do_openid_login(void)
 247 {
 248         char buf[4096];
 249
 250         snprintf(buf, sizeof buf,
 251                 "OIDS %s|%s/finalize_openid_login|%s",
 252                 bstr("openid_url"),
 253                 ChrPtr(site_prefix),
 254                 ChrPtr(site_prefix)
 255         );
 256
 257         serv_puts(buf);
 258         serv_getln(buf, sizeof buf);
 259         if (buf[0] == '2') {
 260                 syslog(LOG_DEBUG, "OpenID server contacted; redirecting to %s\n", &buf[4]);
 261                 http_redirect(&buf[4]);
 262                 return;
 263         }
 264
 265         begin_burst();
 266         output_headers(1, 0, 0, 0, 1, 0);
 267         wc_printf("<html><body>");
 268         escputs(&buf[4]);
 269         wc_printf("</body></html>");
 270         end_burst();
 271 }
 272
 273
 274 /*
 275  * Complete the authentication using OpenID
 276  * This function handles the positive or negative assertion from the user's Identity Provider
 277  */
 278 void finalize_openid_login(void)
 279 {
 280         StrBuf *Buf;
 281         wcsession *WCC = WC;
 282         int linecount = 0;
 283         StrBuf *result = NULL;
 284         StrBuf *username = NULL;
 285         StrBuf *password = NULL;
 286         StrBuf *logged_in_response = NULL;
 287         StrBuf *claimed_id = NULL;
 288
 289         if (havebstr("openid.mode")) {
 290                 if (!strcasecmp(bstr("openid.mode"), "id_res")) {
 291                         Buf = NewStrBuf();
 292                         serv_puts("OIDF");
 293                         StrBuf_ServGetln(Buf);
 294                         if (GetServerStatus(Buf, NULL) == 8) {
 295                                 urlcontent *u;
 296                                 void *U;
 297                                 long HKLen;
 298                                 const char *HKey;
 299                                 HashPos *Cursor;
 300                                 int len;
 301
 302                                 Cursor = GetNewHashPos (WCC->Hdr->urlstrings, 0);
 303                                 while (GetNextHashPos(WCC->Hdr->urlstrings, Cursor, &HKLen, &HKey, &U)) {
 304                                         u = (urlcontent*) U;
 305                                         if (!strncasecmp(u->url_key, "openid.", 7)) {
 306                                                 serv_printf("%s|%s", &u->url_key[7], ChrPtr(u->url_data));
 307                                         }
 308                                 }
 309
 310                                 serv_puts("000");
 311
 312                                 linecount = 0;
 313                                 while (len = StrBuf_ServGetln(Buf),
 314                                        ((len >= 0) &&
 315                                         ((len != 3) || strcmp(ChrPtr(Buf), "000") )))
 316                                 {
 317                                         if (linecount == 0) result = NewStrBufDup(Buf);
 318                                         if (!strcasecmp(ChrPtr(result), "authenticate")) {
 319                                                 if (linecount == 1) {
 320                                                         username = NewStrBufDup(Buf);
 321                                                 }
 322                                                 else if (linecount == 2) {
 323                                                         password = NewStrBufDup(Buf);
 324                                                 }
 325                                                 else if (linecount == 3) {
 326                                                         logged_in_response = NewStrBufDup(Buf);
 327                                                 }
 328                                         }
 329                                         else if (!strcasecmp(ChrPtr(result), "verify_only")) {
 330                                                 if (linecount == 1) {
 331                                                         claimed_id = NewStrBufDup(Buf);
 332                                                 }
 333                                                 if (linecount == 2) {
 334                                                         username = NewStrBufDup(Buf);
 335                                                 }
 336                                         }
 337                                         ++linecount;
 338                                 }
 339                         }
 340                         FreeStrBuf(&Buf);
 341                 }
 342         }
 343
 344         /*
 345          * Is this an attempt to associate a new OpenID with an account that is already logged in?
 346          */
 347         if ( (WCC->logged_in) && (havebstr("attach_existing")) ) {
 348                 display_openids();
 349         }
 350
 351         /* If this operation logged us in, either by connecting with an existing account or by
 352          * auto-creating one using Simple Registration Extension, we're already on our way.
 353          */
 354         else if (!strcasecmp(ChrPtr(result), "authenticate")) {
 355                 become_logged_in(username, password, logged_in_response);
 356
 357                 /* Did we manage to log in?  If so, continue with the normal flow... */
 358                 if (WC->logged_in) {
 359                         begin_burst();
 360                         output_headers(1, 0, 0, 0, 1, 0);
 361                         do_template("authpopup_finished");
 362                         end_burst();
 363                 } else {
 364                         begin_burst();
 365                         output_headers(1, 0, 0, 0, 1, 0);
 366                         wc_printf("<html><body>");
 367                         wc_printf(_("An error has occurred."));
 368                         wc_printf("</body></html>");
 369                         end_burst();
 370                 }
 371         }
 372
 373         /* The specified OpenID was verified but the desired user name was either not specified via SRE
 374          * or conflicts with an existing user.  Either way the user will need to specify a new name.
 375          */
 376         else if (!strcasecmp(ChrPtr(result), "verify_only")) {
 377                 putbstr("__claimed_id", claimed_id);
 378                 claimed_id = NULL;
 379                 if (StrLength(username) > 0) {
 380                         putbstr("__username", username);
 381                         username = NULL;
 382                 }
 383                 begin_burst();
 384                 output_headers(1, 0, 0, 0, 1, 0);
 385                 wc_printf("<html><body>");
 386                 do_template("openid_manual_create");
 387                 wc_printf("</body></html>");
 388                 end_burst();
 389         }
 390
 391         /* Something went VERY wrong if we get to this point */
 392         else {
 393                 syslog(1, "finalize_openid_login() failed to do anything.  This is a code problem.\n");
 394                 begin_burst();
 395                 output_headers(1, 0, 0, 0, 1, 0);
 396                 wc_printf("<html><body>");
 397                 wc_printf(_("An error has occurred."));
 398                 wc_printf("</body></html>");
 399                 end_burst();
 400         }
 401
 402         FreeStrBuf(&result);
 403         FreeStrBuf(&username);
 404         FreeStrBuf(&password);
 405         FreeStrBuf(&claimed_id);
 406         FreeStrBuf(&logged_in_response);
 407 }
 408
 409
 410 /*
 411  * Display a welcome screen to the user.
 412  *
 413  * If this is the first time login, and the web based setup is enabled,
 414  * lead the user through the setup routines
 415  */
 416 void do_welcome(void)
 417 {
 418         StrBuf *Buf;
 419 #ifdef XXX_NOT_FINISHED_YET_XXX
 420         FILE *fp;
 421         int i;
 422
 423         /**
 424          * See if we have to run the first-time setup wizard
 425          */
 426         if (WC->is_aide) {
 427                 if (!setup_wizard) {
 428                         int len;
 429                         sprintf(wizard_filename, "setupwiz.%s.%s",
 430                                 abs(HashLittle(ctdlhost, strlen(ctdlhost))),
 431                                 abs(HashLittle(ctdlport, strlen(ctdlport)))
 432                         );
 433
 434                         fp = fopen(wizard_filename, "r");
 435                         if (fp != NULL) {
 436                                 fgets(buf, sizeof buf, fp);
 437                                 buf[strlen(buf)-1] = 0;
 438                                 fclose(fp);
 439                                 if (atoi(buf) == serv_info.serv_rev_level) {
 440                                         setup_wizard = 1;       /* already run */
 441                                 }
 442                         }
 443                 }
 444
 445                 if (!setup_wizard) {
 446                         http_redirect("setup_wizard");
 447                 }
 448         }
 449 #endif
 450
 451         /*
 452          * Go to the user's preferred start page
 453          */
 454         if (!get_preference("startpage", &Buf)) {
 455                 Buf = NewStrBuf ();
 456                 StrBufPrintf(Buf, "dotskip?room=_BASEROOM_");
 457                 set_preference("startpage", Buf, 1);
 458         }
 459         if (ChrPtr(Buf)[0] == '/') {
 460                 StrBufCutLeft(Buf, 1);
 461         }
 462         if (StrLength(Buf) == 0) {
 463                 StrBufAppendBufPlain(Buf, "dotgoto?room=_BASEROOM_", -1, 0);
 464         }
 465         syslog(9, "Redirecting to user's start page: %s\n", ChrPtr(Buf));
 466         http_redirect(ChrPtr(Buf));
 467 }
 468
 469
 470 /*
 471  * Disconnect from the Citadel server, and end this WebCit session
 472  */
 473 void end_webcit_session(void) {
 474         serv_puts("QUIT");
 475         WC->killthis = 1;
 476         /* close() of citadel socket will be done by do_housekeeping() */
 477 }
 478
 479
 480 /*
 481  * Log out the session with the Citadel server
 482  */
 483 void do_logout(void)
 484 {
 485         wcsession *WCC = WC;
 486         char buf[SIZ];
 487
 488         FlushStrBuf(WCC->wc_username);
 489         FlushStrBuf(WCC->wc_password);
 490         FlushStrBuf(WCC->wc_fullname);
 491         FlushRoomlist();
 492
 493         serv_puts("LOUT");
 494         serv_getln(buf, sizeof buf);
 495         WCC->logged_in = 0;
 496
 497         FlushStrBuf(WCC->CurRoom.name);
 498
 499         /* Calling output_headers() this way causes the cookies to be un-set */
 500         output_headers(1, 1, 0, 1, 0, 0);
 501
 502         /* For sites in guest mode, redirect to the landing page after we're logged out */
 503         if (WC->serv_info->serv_supports_guest) {
 504                 wc_printf("     <script type=\"text/javascript\">       "
 505                         "       window.location='/';                    "
 506                         "       </script>                               "
 507                 );
 508         }
 509
 510         wc_printf("<div id=\"logout_screen\">");
 511         wc_printf("<div class=\"box\">");
 512         wc_printf("<div class=\"boxlabel\">");
 513         wc_printf(_("Log off"));
 514         wc_printf("</div><div class=\"boxcontent\">");
 515         serv_puts("MESG goodbye");
 516         serv_getln(buf, sizeof buf);
 517
 518         if (WCC->serv_sock >= 0) {
 519                 if (buf[0] == '1') {
 520                         fmout("'CENTER'");
 521                 } else {
 522                         wc_printf("Goodbye\n");
 523                 }
 524         }
 525         else {
 526                 wc_printf(_("This program was unable to connect or stay "
 527                         "connected to the Citadel server.  Please report "
 528                         "this problem to your system administrator.")
 529                 );
 530                 wc_printf("<a href=\"http://www.citadel.org/doku.php/"
 531                         "faq:mastering_your_os:net#netstat\">%s</a>",
 532                         _("Read More..."));
 533         }
 534
 535         wc_printf("<hr /><div class=\"buttons\"> "
 536                 "<span class=\"button_link\"><a href=\".\">");
 537         wc_printf(_("Log in again"));
 538         wc_printf("</a></span>");
 539         wc_printf("</div></div></div>\n");
 540         if (WC->serv_info->serv_supports_guest) {
 541                 display_default_landing_page();
 542                 return;
 543         }
 544
 545         wDumpContent(2);
 546         end_webcit_session();
 547 }
 548
 549
 550 /*
 551  * Special page for monitoring scripts etc
 552  */
 553 void monitor(void)
 554 {
 555         output_headers(0, 0, 0, 0, 0, 0);
 556
 557         hprintf("Content-type: text/plain\r\n"
 558                 "Server: " PACKAGE_STRING "\r\n"
 559                 "Connection: close\r\n"
 560         );
 561         begin_burst();
 562
 563         wc_printf("Connection to Citadel server at %s:%s : %s\r\n",
 564                 ctdlhost, ctdlport,
 565                 (WC->connected ? "SUCCESS" : "FAIL")
 566         );
 567
 568         wDumpContent(0);
 569 }
 570
 571
 572 /*
 573  * validate new users
 574  */
 575 void validate(void)
 576 {
 577         char cmd[SIZ];
 578         char user[SIZ];
 579         char buf[SIZ];
 580         int a;
 581
 582         output_headers(1, 1, 1, 0, 0, 0);
 583
 584         do_template("box_begin_1");
 585         StrBufAppendBufPlain(WC->WBuf, _("Validate new users"), -1, 0);
 586         do_template("box_begin_2");
 587
 588         /* If the user just submitted a validation, process it... */
 589         safestrncpy(buf, bstr("user"), sizeof buf);
 590         if (!IsEmptyStr(buf)) {
 591                 if (havebstr("axlevel")) {
 592                         serv_printf("VALI %s|%s", buf, bstr("axlevel"));
 593                         serv_getln(buf, sizeof buf);
 594                         if (buf[0] != '2') {
 595                                 wc_printf("<b>%s</b><br>\n", &buf[4]);
 596                         }
 597                 }
 598         }
 599
 600         /* Now see if any more users require validation. */
 601         serv_puts("GNUR");
 602         serv_getln(buf, sizeof buf);
 603         if (buf[0] == '2') {
 604                 wc_printf("<b>");
 605                 wc_printf(_("No users require validation at this time."));
 606                 wc_printf("</b><br>\n");
 607                 wDumpContent(1);
 608                 return;
 609         }
 610         if (buf[0] != '3') {
 611                 wc_printf("<b>%s</b><br>\n", &buf[4]);
 612                 wDumpContent(1);
 613                 return;
 614         }
 615
 616         wc_printf("<table class=\"auth_validate\"><tr><td>\n");
 617         wc_printf("<div id=\"validate\">");
 618
 619         safestrncpy(user, &buf[4], sizeof user);
 620         serv_printf("GREG %s", user);
 621         serv_getln(cmd, sizeof cmd);
 622         if (cmd[0] == '1') {
 623                 a = 0;
 624                 do {
 625                         serv_getln(buf, sizeof buf);
 626                         ++a;
 627                         if (a == 1)
 628                                 wc_printf("#%s<br><H1>%s</H1>",
 629                                         buf, &cmd[4]);
 630                         if (a == 2) {
 631                                 char *pch;
 632                                 int haveChar = 0;
 633                                 int haveNum = 0;
 634                                 int haveOther = 0;
 635                                 int haveLong = 0;
 636                                 pch = buf;
 637                                 while (!IsEmptyStr(pch))
 638                                 {
 639                                         if (isdigit(*pch))
 640                                                 haveNum = 1;
 641                                         else if (isalpha(*pch))
 642                                                 haveChar = 1;
 643                                         else
 644                                                 haveOther = 1;
 645                                         pch ++;
 646                                 }
 647                                 if (pch - buf > 7)
 648                                         haveLong = 1;
 649                                 switch (haveLong +
 650                                         haveChar +
 651                                         haveNum +
 652                                         haveOther)
 653                                 {
 654                                 case 0:
 655                                         pch = _("very weak");
 656                                         break;
 657                                 case 1:
 658                                         pch = _("weak");
 659                                         break;
 660                                 case 2:
 661                                         pch = _("ok");
 662                                         break;
 663                                 case 3:
 664                                 default:
 665                                         pch = _("strong");
 666                                 }
 667
 668                                 wc_printf("PW: %s<br>\n", pch);
 669                         }
 670                         if (a == 3)
 671                                 wc_printf("%s<br>\n", buf);
 672                         if (a == 4)
 673                                 wc_printf("%s<br>\n", buf);
 674                         if (a == 5)
 675                                 wc_printf("%s, ", buf);
 676                         if (a == 6)
 677                                 wc_printf("%s ", buf);
 678                         if (a == 7)
 679                                 wc_printf("%s<br>\n", buf);
 680                         if (a == 8)
 681                                 wc_printf("%s<br>\n", buf);
 682                         if (a == 9)
 683                                 wc_printf(_("Current access level: %d (%s)\n"),
 684                                         atoi(buf), axdefs[atoi(buf)]);
 685                 } while (strcmp(buf, "000"));
 686         } else {
 687                 wc_printf("<H1>%s</H1>%s<br>\n", user, &cmd[4]);
 688         }
 689
 690         wc_printf("<hr />");
 691         wc_printf(_("Select access level for this user:"));
 692         wc_printf("<br>\n");
 693         for (a = 0; a <= 6; ++a) {
 694                 wc_printf("<a href=\"validate?nonce=%d?user=", WC->nonce);
 695                 urlescputs(user);
 696                 wc_printf("&axlevel=%d\">%s</A>&nbsp;&nbsp;&nbsp;\n",
 697                         a, axdefs[a]);
 698         }
 699         wc_printf("<br>\n");
 700
 701         wc_printf("</div>\n");
 702         wc_printf("</td></tr></table>\n");
 703         do_template("box_end");
 704         wDumpContent(1);
 705 }
 706
 707
 708 /*
 709  * Display form for registration.
 710  *
 711  * (Set during_login to 1 if this registration is being performed during
 712  * new user login and will require chaining to the proper screen.)
 713  */
 714 void display_reg(int during_login)
 715 {
 716         folder Room;
 717         StrBuf *Buf;
 718         message_summary *VCMsg = NULL;
 719         wc_mime_attachment *VCAtt = NULL;
 720         long vcard_msgnum;
 721
 722         Buf = NewStrBuf();
 723         memset(&Room, 0, sizeof(folder));
 724         if (goto_config_room(Buf, &Room) != 0) {
 725                 syslog(9, "display_reg() exiting because goto_config_room() failed\n");
 726                 if (during_login) {
 727                         pop_destination();
 728                 }
 729                 else {
 730                         display_main_menu();
 731                 }
 732                 FreeStrBuf(&Buf);
 733                 FlushFolder(&Room);
 734                 return;
 735         }
 736         FlushFolder(&Room);
 737
 738         FreeStrBuf(&Buf);
 739         vcard_msgnum = locate_user_vcard_in_this_room(&VCMsg, &VCAtt);
 740         if (vcard_msgnum < 0L) {
 741                 syslog(9, "display_reg() exiting because locate_user_vcard_in_this_room() failed\n");
 742                 if (during_login) {
 743                         pop_destination();
 744                 }
 745                 else {
 746                         display_main_menu();
 747                 }
 748                 return;
 749         }
 750
 751         if (during_login) {
 752                 do_edit_vcard(vcard_msgnum, "1", VCMsg, VCAtt, "pop", USERCONFIGROOM);
 753         }
 754         else {
 755                 StrBuf *ReturnTo;
 756                 ReturnTo = NewStrBufPlain(HKEY("display_main_menu?go="));
 757                 StrBufAppendBuf(ReturnTo, WC->CurRoom.name, 0);
 758                 do_edit_vcard(vcard_msgnum, "1", VCMsg, VCAtt, ChrPtr(ReturnTo), USERCONFIGROOM);
 759                 FreeStrBuf(&ReturnTo);
 760         }
 761
 762 }
 763
 764
 765 /*
 766  * display form for changing your password
 767  */
 768 void display_changepw(void)
 769 {
 770         wcsession *WCC = WC;
 771         WCTemplputParams SubTP;
 772         char buf[SIZ];
 773         StrBuf *Buf;
 774         output_headers(1, 1, 1, 0, 0, 0);
 775
 776         Buf = NewStrBufPlain(_("Change your password"), -1);
 777         memset(&SubTP, 0, sizeof(WCTemplputParams));
 778         SubTP.Filter.ContextType = CTX_STRBUF;
 779         SubTP.Context = Buf;
 780         DoTemplate(HKEY("box_begin"), NULL, &SubTP);
 781
 782         FreeStrBuf(&Buf);
 783
 784         if (StrLength(WCC->ImportantMsg) > 0) {
 785                 wc_printf("<span class=\"errormsg\">"
 786                           "%s</span><br>\n", ChrPtr(WCC->ImportantMsg));
 787                 FlushStrBuf(WCC->ImportantMsg);
 788         }
 789
 790         serv_puts("MESG changepw");
 791         serv_getln(buf, sizeof buf);
 792         if (buf[0] == '1') {
 793                 fmout("CENTER");
 794         }
 795
 796         wc_printf("<form name=\"changepwform\" action=\"changepw\" method=\"post\">\n");
 797         wc_printf("<input type=\"hidden\" name=\"nonce\" value=\"%d\">\n", WC->nonce);
 798         wc_printf("<table class=\"altern\" ");
 799         wc_printf("<tr class=\"even\"><td>");
 800         wc_printf(_("Enter new password:"));
 801         wc_printf("</td><td>");
 802         wc_printf("<input type=\"password\" name=\"newpass1\" value=\"\" maxlength=\"20\"></td></tr>\n");
 803         wc_printf("<tr class=\"odd\"><td>");
 804         wc_printf(_("Enter it again to confirm:"));
 805         wc_printf("</td><td>");
 806         wc_printf("<input type=\"password\" name=\"newpass2\" value=\"\" maxlength=\"20\"></td></tr>\n");
 807         wc_printf("</table>\n");
 808
 809         wc_printf("<div class=\"buttons\">\n");
 810         wc_printf("<input type=\"submit\" name=\"change_action\" value=\"%s\">", _("Change password"));
 811         wc_printf("&nbsp;");
 812         wc_printf("<input type=\"submit\" name=\"cancel_action\" value=\"%s\">\n", _("Cancel"));
 813         wc_printf("</div>\n");
 814         wc_printf("</form>\n");
 815
 816         do_template("box_end");
 817         wDumpContent(1);
 818 }
 819
 820 /*
 821  * change password
 822  * if passwords match, propagate it to citserver.
 823  */
 824 void changepw(void)
 825 {
 826         StrBuf *Line;
 827         char newpass1[32], newpass2[32];
 828
 829         if (!havebstr("change_action")) {
 830                 AppendImportantMessage(_("Cancelled.  Password was not changed."), -1);
 831                 display_main_menu();
 832                 return;
 833         }
 834
 835         safestrncpy(newpass1, bstr("newpass1"), sizeof newpass1);
 836         safestrncpy(newpass2, bstr("newpass2"), sizeof newpass2);
 837
 838         if (strcasecmp(newpass1, newpass2)) {
 839                 AppendImportantMessage(_("They don't match.  Password was not changed."), -1);
 840                 display_changepw();
 841                 return;
 842         }
 843
 844         if (IsEmptyStr(newpass1)) {
 845                 AppendImportantMessage(_("Blank passwords are not allowed."), -1);
 846                 display_changepw();
 847                 return;
 848         }
 849
 850         Line = NewStrBuf();
 851         serv_printf("SETP %s", newpass1);
 852         StrBuf_ServGetln(Line);
 853         if (GetServerStatusMsg(Line, NULL, 1, 0) == 2) {
 854                 if (WC->wc_password == NULL)
 855                         WC->wc_password = NewStrBufPlain(
 856                                 ChrPtr(Line) + 4,
 857                                 StrLength(Line) - 4);
 858                 else {
 859                         FlushStrBuf(WC->wc_password);
 860                         StrBufAppendBufPlain(WC->wc_password,
 861                                              ChrPtr(Line) + 4,
 862                                              StrLength(Line) - 4, 0);
 863                 }
 864                 display_main_menu();
 865         }
 866         else {
 867                 display_changepw();
 868         }
 869         FreeStrBuf(&Line);
 870 }
 871
 872
 873 int ConditionalHaveAccessCreateRoom(StrBuf *Target, WCTemplputParams *TP)
 874 {
 875         StrBuf *Buf;
 876
 877         Buf = NewStrBuf();
 878         serv_puts("CRE8 0");
 879         StrBuf_ServGetln(Buf);
 880
 881         if (GetServerStatus(Buf, NULL) == 2) {
 882                 StrBufCutLeft(Buf, 4);
 883                 AppendImportantMessage(SKEY(Buf));
 884                 FreeStrBuf(&Buf);
 885                 return 0;
 886         }
 887         FreeStrBuf(&Buf);
 888         return 1;
 889 }
 890
 891
 892 int ConditionalAide(StrBuf *Target, WCTemplputParams *TP)
 893 {
 894         wcsession *WCC = WC;
 895         return (WCC != NULL) ? ((WCC->logged_in == 0)||(WC->is_aide == 0)) : 0;
 896 }
 897
 898
 899 int ConditionalIsLoggedIn(StrBuf *Target, WCTemplputParams *TP)
 900 {
 901         wcsession *WCC = WC;
 902         return (WCC != NULL) ? (WCC->logged_in == 0) : 0;
 903
 904 }
 905
 906
 907 /*
 908  * toggle the session over to a different language
 909  */
 910 void switch_language(void) {
 911         set_selected_language(bstr("lang"));
 912         pop_destination();
 913 }
 914
 915
 916 void _display_reg(void) {
 917         display_reg(0);
 918 }
 919
 920
 921 void Header_HandleAuth(StrBuf *Line, ParsedHttpHdrs *hdr)
 922 {
 923         if (hdr->HR.got_auth == NO_AUTH) /* don't override cookie auth... */
 924         {
 925                 if (strncasecmp(ChrPtr(Line), "Basic", 5) == 0) {
 926                         StrBufCutLeft(Line, 6);
 927                         StrBufDecodeBase64(Line);
 928                         hdr->HR.plainauth = Line;
 929                         hdr->HR.got_auth = AUTH_BASIC;
 930                 }
 931                 else
 932                         syslog(1, "Authentication scheme not supported! [%s]\n", ChrPtr(Line));
 933         }
 934 }
 935
 936
 937 void CheckAuthBasic(ParsedHttpHdrs *hdr)
 938 {
 939 /*
 940   todo: enable this if we can have other sessions than authenticated ones.
 941         if (hdr->DontNeedAuth)
 942                 return;
 943 */
 944         StrBufAppendBufPlain(hdr->HR.plainauth, HKEY(":"), 0);
 945         StrBufAppendBuf(hdr->HR.plainauth, hdr->HR.user_agent, 0);
 946 }
 947
 948
 949 void GetAuthBasic(ParsedHttpHdrs *hdr)
 950 {
 951         const char *Pos = NULL;
 952         if (hdr->c_username == NULL)
 953                 hdr->c_username = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_USER));
 954         if (hdr->c_password == NULL)
 955                 hdr->c_password = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_PASS));
 956         StrBufExtract_NextToken(hdr->c_username, hdr->HR.plainauth, &Pos, ':');
 957         StrBufExtract_NextToken(hdr->c_password, hdr->HR.plainauth, &Pos, ':');
 958 }
 959
 960
 961 void Header_HandleCookie(StrBuf *Line, ParsedHttpHdrs *hdr)
 962 {
 963         const char *pch;
 964 /*
 965   todo: enable this if we can have other sessions than authenticated ones.
 966         if (hdr->DontNeedAuth)
 967                 return;
 968 */
 969         pch = strstr(ChrPtr(Line), "webcit=");
 970         if (pch == NULL) {
 971                 return;
 972         }
 973
 974         hdr->HR.RawCookie = Line;
 975         StrBufCutLeft(hdr->HR.RawCookie, (pch - ChrPtr(hdr->HR.RawCookie)) + 7);
 976         StrBufDecodeHex(hdr->HR.RawCookie);
 977
 978         cookie_to_stuff(Line, &hdr->HR.desired_session,
 979                         hdr->c_username,
 980                         hdr->c_password,
 981                         hdr->c_roomname,
 982                         hdr->c_language
 983         );
 984         hdr->HR.got_auth = AUTH_COOKIE;
 985 }
 986
 987
 988 void
 989 HttpNewModule_AUTH
 990 (ParsedHttpHdrs *httpreq)
 991 {
 992         httpreq->c_username = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_USER));
 993         httpreq->c_password = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_PASS));
 994         httpreq->c_roomname = NewStrBuf();
 995         httpreq->c_language = NewStrBuf();
 996 }
 997
 998
 999 void
1000 HttpDetachModule_AUTH
1001 (ParsedHttpHdrs *httpreq)
1002 {
1003         FLUSHStrBuf(httpreq->c_username);
1004         FLUSHStrBuf(httpreq->c_password);
1005         FLUSHStrBuf(httpreq->c_roomname);
1006         FLUSHStrBuf(httpreq->c_language);
1007 }
1008
1009
1010 void
1011 HttpDestroyModule_AUTH
1012 (ParsedHttpHdrs *httpreq)
1013 {
1014         FreeStrBuf(&httpreq->c_username);
1015         FreeStrBuf(&httpreq->c_password);
1016         FreeStrBuf(&httpreq->c_roomname);
1017         FreeStrBuf(&httpreq->c_language);
1018 }
1019
1020
1021 void
1022 InitModule_AUTH
1023 (void)
1024 {
1025         initialize_axdefs();
1026         RegisterHeaderHandler(HKEY("COOKIE"), Header_HandleCookie);
1027         RegisterHeaderHandler(HKEY("AUTHORIZATION"), Header_HandleAuth);
1028
1029         /* no url pattern at all? Show login. */
1030         WebcitAddUrlHandler(HKEY(""), "", 0, do_welcome, ANONYMOUS|COOKIEUNNEEDED);
1031
1032         WebcitAddUrlHandler(HKEY("do_welcome"), "", 0, do_welcome, ANONYMOUS|COOKIEUNNEEDED);
1033         WebcitAddUrlHandler(HKEY("openid_login"), "", 0, do_openid_login, ANONYMOUS);
1034         WebcitAddUrlHandler(HKEY("finalize_openid_login"), "", 0, finalize_openid_login, ANONYMOUS);
1035         WebcitAddUrlHandler(HKEY("openid_manual_create"), "", 0, openid_manual_create, ANONYMOUS);
1036         WebcitAddUrlHandler(HKEY("validate"), "", 0, validate, 0);
1037         WebcitAddUrlHandler(HKEY("do_welcome"), "", 0, do_welcome, 0);
1038         WebcitAddUrlHandler(HKEY("display_reg"), "", 0, _display_reg, 0);
1039         WebcitAddUrlHandler(HKEY("display_changepw"), "", 0, display_changepw, 0);
1040         WebcitAddUrlHandler(HKEY("changepw"), "", 0, changepw, 0);
1041         WebcitAddUrlHandler(HKEY("termquit"), "", 0, do_logout, 0);
1042         WebcitAddUrlHandler(HKEY("do_logout"), "", 0, do_logout, ANONYMOUS|COOKIEUNNEEDED|FORCE_SESSIONCLOSE);
1043         WebcitAddUrlHandler(HKEY("monitor"), "", 0, monitor, ANONYMOUS|COOKIEUNNEEDED|FORCE_SESSIONCLOSE);
1044         WebcitAddUrlHandler(HKEY("ajax_login_username_password"), "", 0, ajax_login_username_password, AJAX|ANONYMOUS);
1045         WebcitAddUrlHandler(HKEY("ajax_login_newuser"), "", 0, ajax_login_newuser, AJAX|ANONYMOUS);
1046         WebcitAddUrlHandler(HKEY("switch_language"), "", 0, switch_language, ANONYMOUS);
1047         RegisterConditional(HKEY("COND:AIDE"), 2, ConditionalAide, CTX_NONE);
1048         RegisterConditional(HKEY("COND:LOGGEDIN"), 2, ConditionalIsLoggedIn, CTX_NONE);
1049         RegisterConditional(HKEY("COND:MAY_CREATE_ROOM"), 2,  ConditionalHaveAccessCreateRoom, CTX_NONE);
1050         return;
1051 }
1052
1053
1054 void
1055 SessionDestroyModule_AUTH
1056 (wcsession *sess)
1057 {
1058         FreeStrBuf(&sess->wc_username);
1059         FreeStrBuf(&sess->wc_fullname);
1060         FreeStrBuf(&sess->wc_password);
1061         FreeStrBuf(&sess->httpauth_pass);
1062         FreeStrBuf(&sess->cs_inet_email);
1063 }