webcit/auth.c

   1 /*
   2  * These functions handle authentication of users to a Citadel server.
   3  *
   4  * Copyright (c) 1996-2011 by the citadel.org team
   5  *
   6  * This program is open source software.  You can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License as
   8  * published by the Free Software Foundation; either version 3 of the
   9  * License, or (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  19  */
  20
  21 #include "webcit.h"
  22 #include "webserver.h"
  23 #include <ctype.h>
  24
  25 extern uint32_t hashlittle( const void *key, size_t length, uint32_t initval);
  26
  27 void display_reg(int during_login);
  28
  29 /*
  30  * Access level definitions.  This is initialized from a function rather than a
  31  * static array so that the strings may be localized.
  32  */
  33 char *axdefs[7];
  34
  35 void initialize_axdefs(void) {
  36
  37         /* an erased user */
  38         axdefs[0] = _("Deleted");
  39
  40         /* a new user */
  41         axdefs[1] = _("New User");
  42
  43         /* a trouble maker */
  44         axdefs[2] = _("Problem User");
  45
  46         /* user with normal privileges */
  47         axdefs[3] = _("Local User");
  48
  49         /* a user that may access network resources */
  50         axdefs[4] = _("Network User");
  51
  52         /* a moderator */
  53         axdefs[5] = _("Preferred User");
  54
  55         /* chief */
  56         axdefs[6] = _("Aide");
  57 }
  58
  59
  60
  61 /*
  62  * Display the login screen
  63  * mesg = the error message if last attempt failed.
  64  */
  65 void display_login(void)
  66 {
  67         begin_burst();
  68         output_headers(1, 0, 0, 0, 1, 0);
  69         do_template("login", NULL);
  70         end_burst();
  71 }
  72
  73
  74
  75
  76
  77 /* Initialize the session
  78  *
  79  * This function needs to get called whenever the session changes from
  80  * not-logged-in to logged-in, either by an explicit login by the user or
  81  * by a timed-out session automatically re-establishing with a little help
  82  * from the browser cookie.  Either way, we need to load access controls and
  83  * preferences from the server.
  84  *
  85  * user                 the username
  86  * pass                 his password
  87  * serv_response        The parameters returned from a Citadel USER or NEWU command
  88  */
  89 void become_logged_in(const StrBuf *user, const StrBuf *pass, StrBuf *serv_response)
  90 {
  91         wcsession *WCC = WC;
  92         StrBuf *Buf;
  93         StrBuf *FloorDiv;
  94
  95         WCC->logged_in = 1;
  96
  97         if (WCC->wc_fullname == NULL)
  98                 WCC->wc_fullname = NewStrBufPlain(NULL, StrLength(serv_response));
  99         StrBufExtract_token(WCC->wc_fullname, serv_response, 0, '|');
 100         StrBufCutLeft(WCC->wc_fullname, 4 );
 101
 102         if (WCC->wc_username == NULL)
 103                 WCC->wc_username = NewStrBufDup(user);
 104         else {
 105                 FlushStrBuf(WCC->wc_username);
 106                 StrBufAppendBuf(WCC->wc_username, user, 0);
 107         }
 108
 109         if (WCC->wc_password == NULL)
 110                 WCC->wc_password = NewStrBufDup(pass);
 111         else {
 112                 FlushStrBuf(WCC->wc_password);
 113                 StrBufAppendBuf(WCC->wc_password, pass, 0);
 114         }
 115
 116         WCC->axlevel = StrBufExtract_int(serv_response, 1, '|');
 117         if (WCC->axlevel >= 6) { /* TODO: make this a define, else it might trick us later */
 118                 WCC->is_aide = 1;
 119         }
 120
 121         load_preferences();
 122
 123         Buf = NewStrBuf();
 124         serv_puts("CHEK");
 125         StrBuf_ServGetln(Buf);
 126         if (GetServerStatus(Buf, NULL) == 2) {
 127                 const char *pch;
 128
 129                 pch = ChrPtr(Buf) + 4;
 130                 /*WCC->new_mail  =*/ StrBufExtractNext_long(Buf, &pch, '|');
 131                 WCC->need_regi = StrBufExtractNext_long(Buf, &pch, '|');
 132                 WCC->need_vali = StrBufExtractNext_long(Buf, &pch, '|');
 133                 if (WCC->cs_inet_email == NULL)
 134                         WCC->cs_inet_email  = NewStrBuf();
 135                 StrBufExtract_NextToken(WCC->cs_inet_email, Buf, &pch, '|');
 136         }
 137         get_preference("floordiv_expanded", &FloorDiv);
 138         WCC->floordiv_expanded = FloorDiv;
 139         FreeStrBuf(&Buf);
 140 }
 141
 142
 143 /*
 144  * modal/ajax version of 'login' (username and password)
 145  */
 146 void ajax_login_username_password(void) {
 147         StrBuf *Buf = NewStrBuf();
 148
 149         serv_printf("USER %s", bstr("name"));
 150         StrBuf_ServGetln(Buf);
 151         if (GetServerStatus(Buf, NULL) == 3) {
 152                 serv_printf("PASS %s", bstr("pass"));
 153                 StrBuf_ServGetln(Buf);
 154                 if (GetServerStatus(Buf, NULL) == 2) {
 155                         become_logged_in(sbstr("name"), sbstr("pass"), Buf);
 156                 }
 157         }
 158
 159         /* The client is expecting to read back a citadel protocol response */
 160         wc_printf("%s", ChrPtr(Buf));
 161         FreeStrBuf(&Buf);
 162 }
 163
 164
 165
 166 /*
 167  * modal/ajax version of 'new user' (username and password)
 168  */
 169 void ajax_login_newuser(void) {
 170         StrBuf *Buf = NewStrBuf();
 171
 172         serv_printf("NEWU %s", bstr("name"));
 173         StrBuf_ServGetln(Buf);
 174         if (GetServerStatus(Buf, NULL) == 2) {
 175                 serv_printf("SETP %s", bstr("pass"));
 176                 StrBuf_ServGetln(Buf);
 177                 if (GetServerStatus(Buf, NULL) == 2) {
 178                         become_logged_in(sbstr("name"), sbstr("pass"), Buf);
 179                 }
 180         }
 181
 182         /* The client is expecting to read back a citadel protocol response */
 183         wc_printf("%s", ChrPtr(Buf));
 184         FreeStrBuf(&Buf);
 185 }
 186
 187
 188
 189 /*
 190  * Try to create an account manually after an OpenID was verified
 191  */
 192 void openid_manual_create(void)
 193 {
 194         StrBuf *Buf;
 195
 196         if (havebstr("exit_action")) {
 197                 do_logout();
 198                 return;
 199         }
 200
 201         if (havebstr("newuser_action")) {
 202                 Buf = NewStrBuf();
 203                 serv_printf("OIDC %s", bstr("name"));
 204                 StrBuf_ServGetln(Buf);
 205                 if (GetServerStatus(Buf, NULL) == 2) {
 206                         StrBuf *gpass;
 207
 208                         gpass = NewStrBuf();
 209                         serv_puts("SETP GENERATE_RANDOM_PASSWORD");
 210                         StrBuf_ServGetln(gpass);
 211                         StrBufCutLeft(gpass, 4);
 212                         become_logged_in(sbstr("name"), gpass, Buf);
 213                         FreeStrBuf(&gpass);
 214                 }
 215                 FreeStrBuf(&Buf);
 216         }
 217
 218         if (WC->logged_in) {
 219                 if (WC->need_regi) {
 220                         display_reg(1);
 221                 } else if (WC->need_vali) {
 222                         validate();
 223                 } else {
 224                         do_welcome();
 225                 }
 226         } else {
 227                 const StrBuf *Buf;
 228
 229                 putbstr("__claimed_id", NewStrBufDup(sbstr("openid_url")));
 230                 Buf = sbstr("name");
 231                 if (StrLength(Buf) > 0)
 232                         putbstr("__username", NewStrBufDup(Buf));
 233                 begin_burst();
 234                 do_template("openid_manual_create", NULL);
 235                 end_burst();
 236         }
 237
 238 }
 239
 240
 241 /*
 242  * Perform authentication using OpenID
 243  * assemble the checkid_setup request and then redirect to the user's identity provider
 244  */
 245 void do_openid_login(void)
 246 {
 247         char buf[4096];
 248
 249         snprintf(buf, sizeof buf,
 250                 "OIDS %s|%s/finalize_openid_login|%s",
 251                 bstr("openid_url"),
 252                 ChrPtr(site_prefix),
 253                 ChrPtr(site_prefix)
 254         );
 255
 256         serv_puts(buf);
 257         serv_getln(buf, sizeof buf);
 258         if (buf[0] == '2') {
 259                 syslog(LOG_DEBUG, "OpenID server contacted; redirecting to %s\n", &buf[4]);
 260                 http_redirect(&buf[4]);
 261                 return;
 262         }
 263
 264         begin_burst();
 265         output_headers(1, 0, 0, 0, 1, 0);
 266         wc_printf("<html><body>");
 267         escputs(&buf[4]);
 268         wc_printf("</body></html>");
 269         end_burst();
 270 }
 271
 272
 273 /*
 274  * Complete the authentication using OpenID
 275  * This function handles the positive or negative assertion from the user's Identity Provider
 276  */
 277 void finalize_openid_login(void)
 278 {
 279         StrBuf *Buf;
 280         wcsession *WCC = WC;
 281         int already_logged_in = (WCC->logged_in) ;
 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
 301                                 Cursor = GetNewHashPos (WCC->Hdr->urlstrings, 0);
 302                                 while (GetNextHashPos(WCC->Hdr->urlstrings, Cursor, &HKLen, &HKey, &U)) {
 303                                         u = (urlcontent*) U;
 304                                         if (!strncasecmp(u->url_key, "openid.", 7)) {
 305                                                 serv_printf("%s|%s", &u->url_key[7], ChrPtr(u->url_data));
 306                                         }
 307                                 }
 308
 309                                 serv_puts("000");
 310
 311                                 linecount = 0;
 312                                 while (StrBuf_ServGetln(Buf), strcmp(ChrPtr(Buf), "000"))
 313                                 {
 314                                         if (linecount == 0) result = NewStrBufDup(Buf);
 315                                         if (!strcasecmp(ChrPtr(result), "authenticate")) {
 316                                                 if (linecount == 1) {
 317                                                         username = NewStrBufDup(Buf);
 318                                                 }
 319                                                 else if (linecount == 2) {
 320                                                         password = NewStrBufDup(Buf);
 321                                                 }
 322                                                 else if (linecount == 3) {
 323                                                         logged_in_response = NewStrBufDup(Buf);
 324                                                 }
 325                                         }
 326                                         else if (!strcasecmp(ChrPtr(result), "verify_only")) {
 327                                                 if (linecount == 1) {
 328                                                         claimed_id = NewStrBufDup(Buf);
 329                                                 }
 330                                                 if (linecount == 2) {
 331                                                         username = NewStrBufDup(Buf);
 332                                                 }
 333                                         }
 334                                         ++linecount;
 335                                 }
 336                         }
 337                         FreeStrBuf(&Buf);
 338                 }
 339         }
 340
 341         /* If we were already logged in, this was an attempt to associate an OpenID account
 342         FIXME put this back in
 343         if (already_logged_in) {
 344                 display_openids();
 345                 FreeStrBuf(&result);
 346                 FreeStrBuf(&username);
 347                 FreeStrBuf(&password);
 348                 FreeStrBuf(&claimed_id);
 349                 FreeStrBuf(&logged_in_response);
 350                 return;
 351         }
 352         */
 353
 354         /* If this operation logged us in, either by connecting with an existing account or by
 355          * auto-creating one using Simple Registration Extension, we're already on our way.
 356          */
 357         if (!strcasecmp(ChrPtr(result), "authenticate")) {
 358                 become_logged_in(username, password, logged_in_response);
 359         }
 360
 361         /* The specified OpenID was verified but the desired user name was either not specified via SRI
 362          * or conflicts with an existing user.  Either way the user will need to specify a new name.
 363          */
 364
 365 /*
 366         else if (!strcasecmp(ChrPtr(result), "verify_only")) {
 367                 putbstr("__claimed_id", claimed_id);
 368                 claimed_id = NULL;
 369                 if (StrLength(username) > 0) {
 370                         putbstr("__username", username);
 371                         username = NULL;
 372                 }
 373                 begin_burst();
 374                 do_template("openid_manual_create", NULL);
 375                 end_burst();
 376         }
 377 */
 378
 379
 380
 381         /* Did we manage to log in?  If so, continue with the normal flow... */
 382         if (WC->logged_in) {
 383                 begin_burst();
 384                 output_headers(1, 0, 0, 0, 1, 0);
 385                 do_template("authpopup_finished", NULL);
 386                 end_burst();
 387
 388                 /* FIXME make all this crap work again
 389                 if (WC->need_regi) {
 390                         display_reg(1);
 391                 } else {
 392                         do_welcome();
 393                 }
 394                 */
 395
 396         } else {
 397                 /* FIXME do something prettier here? */
 398                 begin_burst();
 399                 output_headers(1, 0, 0, 0, 1, 0);
 400                 wc_printf("<html><body>");
 401                 wc_printf("error");
 402                 wc_printf("</body></html>");
 403                 end_burst();
 404         }
 405
 406         FreeStrBuf(&result);
 407         FreeStrBuf(&username);
 408         FreeStrBuf(&password);
 409         FreeStrBuf(&claimed_id);
 410         FreeStrBuf(&logged_in_response);
 411 }
 412
 413
 414 /*
 415  * Display a welcome screen to the user.
 416  *
 417  * If this is the first time login, and the web based setup is enabled,
 418  * lead the user through the setup routines
 419  */
 420 void do_welcome(void)
 421 {
 422         StrBuf *Buf;
 423 #ifdef XXX_NOT_FINISHED_YET_XXX
 424         FILE *fp;
 425         int i;
 426
 427         /**
 428          * See if we have to run the first-time setup wizard
 429          */
 430         if (WC->is_aide) {
 431                 if (!setup_wizard) {
 432                         int len;
 433                         sprintf(wizard_filename, "setupwiz.%s.%s",
 434                                 ctdlhost, ctdlport);
 435                         len = strlen(wizard_filename);
 436                         for (i=0; i<len; ++i) {
 437                                 if (    (wizard_filename[i]==' ')
 438                                         || (wizard_filename[i] == '/')
 439                                 ) {
 440                                         wizard_filename[i] = '_';
 441                                 }
 442                         }
 443
 444                         fp = fopen(wizard_filename, "r");
 445                         if (fp != NULL) {
 446                                 fgets(buf, sizeof buf, fp);
 447                                 buf[strlen(buf)-1] = 0;
 448                                 fclose(fp);
 449                                 if (atoi(buf) == serv_info.serv_rev_level) {
 450                                         setup_wizard = 1; /**< already run */
 451                                 }
 452                         }
 453                 }
 454
 455                 if (!setup_wizard) {
 456                         http_redirect("setup_wizard");
 457                 }
 458         }
 459 #endif
 460
 461         /*
 462          * Go to the user's preferred start page
 463          */
 464         if (!get_preference("startpage", &Buf)) {
 465                 Buf = NewStrBuf ();
 466                 StrBufPrintf(Buf, "dotskip?room=_BASEROOM_");
 467                 set_preference("startpage", Buf, 1);
 468         }
 469         if (ChrPtr(Buf)[0] == '/') {
 470                 StrBufCutLeft(Buf, 1);
 471         }
 472         if (StrLength(Buf) == 0) {
 473                 StrBufAppendBufPlain(Buf, "dotgoto?room=_BASEROOM_", -1, 0);
 474         }
 475         syslog(9, "Redirecting to user's start page: %s\n", ChrPtr(Buf));
 476         http_redirect(ChrPtr(Buf));
 477 }
 478
 479
 480 /*
 481  * Disconnect from the Citadel server, and end this WebCit session
 482  */
 483 void end_webcit_session(void) {
 484
 485         serv_puts("QUIT");
 486         WC->killthis = 1;
 487         /* close() of citadel socket will be done by do_housekeeping() */
 488 }
 489
 490 /*
 491  * execute the logout
 492  */
 493 void do_logout(void)
 494 {
 495         wcsession *WCC = WC;
 496         char buf[SIZ];
 497
 498         FlushStrBuf(WCC->wc_username);
 499         FlushStrBuf(WCC->wc_password);
 500         FlushStrBuf(WCC->wc_fullname);
 501
 502         serv_puts("LOUT");
 503         serv_getln(buf, sizeof buf);
 504         WCC->logged_in = 0;
 505
 506         if (WC->serv_info->serv_supports_guest) {
 507                 display_default_landing_page();
 508                 return;
 509         }
 510
 511         FlushStrBuf(WCC->CurRoom.name);
 512
 513         /* Calling output_headers() this way causes the cookies to be un-set */
 514         output_headers(1, 1, 0, 1, 0, 0);
 515
 516         wc_printf("<div id=\"logout_screen\">");
 517         wc_printf("<div class=\"box\">");
 518         wc_printf("<div class=\"boxlabel\">");
 519         wc_printf(_("Log off"));
 520         wc_printf("</div><div class=\"boxcontent\">");
 521         serv_puts("MESG goodbye");
 522         serv_getln(buf, sizeof buf);
 523
 524         if (WCC->serv_sock >= 0) {
 525                 if (buf[0] == '1') {
 526                         fmout("'CENTER'");
 527                 } else {
 528                         wc_printf("Goodbye\n");
 529                 }
 530         }
 531         else {
 532                 wc_printf(_("This program was unable to connect or stay "
 533                         "connected to the Citadel server.  Please report "
 534                         "this problem to your system administrator.")
 535                 );
 536                 wc_printf("<a href=\"http://www.citadel.org/doku.php/"
 537                         "faq:mastering_your_os:net#netstat\">%s</a>",
 538                         _("Read More..."));
 539         }
 540
 541         wc_printf("<hr /><div class=\"buttons\"> "
 542                 "<span class=\"button_link\"><a href=\".\">");
 543         wc_printf(_("Log in again"));
 544         wc_printf("</a></span>");
 545         wc_printf("</div></div></div>\n");
 546         wDumpContent(2);
 547         end_webcit_session();
 548 }
 549
 550
 551 /*
 552  * validate new users
 553  */
 554 void validate(void)
 555 {
 556         char cmd[SIZ];
 557         char user[SIZ];
 558         char buf[SIZ];
 559         int a;
 560
 561         output_headers(1, 1, 2, 0, 0, 0);
 562         wc_printf("<div id=\"banner\">\n");
 563         wc_printf("<h1>");
 564         wc_printf(_("Validate new users"));
 565         wc_printf("</h1>");
 566         wc_printf("</div>\n");
 567
 568         wc_printf("<div id=\"content\" class=\"service\">\n");
 569
 570         /* If the user just submitted a validation, process it... */
 571         safestrncpy(buf, bstr("user"), sizeof buf);
 572         if (!IsEmptyStr(buf)) {
 573                 if (havebstr("axlevel")) {
 574                         serv_printf("VALI %s|%s", buf, bstr("axlevel"));
 575                         serv_getln(buf, sizeof buf);
 576                         if (buf[0] != '2') {
 577                                 wc_printf("<b>%s</b><br>\n", &buf[4]);
 578                         }
 579                 }
 580         }
 581
 582         /* Now see if any more users require validation. */
 583         serv_puts("GNUR");
 584         serv_getln(buf, sizeof buf);
 585         if (buf[0] == '2') {
 586                 wc_printf("<b>");
 587                 wc_printf(_("No users require validation at this time."));
 588                 wc_printf("</b><br>\n");
 589                 wDumpContent(1);
 590                 return;
 591         }
 592         if (buf[0] != '3') {
 593                 wc_printf("<b>%s</b><br>\n", &buf[4]);
 594                 wDumpContent(1);
 595                 return;
 596         }
 597
 598         wc_printf("<table class=\"auth_validate\"><tr><td>\n");
 599         wc_printf("<div id=\"validate\">");
 600
 601         safestrncpy(user, &buf[4], sizeof user);
 602         serv_printf("GREG %s", user);
 603         serv_getln(cmd, sizeof cmd);
 604         if (cmd[0] == '1') {
 605                 a = 0;
 606                 do {
 607                         serv_getln(buf, sizeof buf);
 608                         ++a;
 609                         if (a == 1)
 610                                 wc_printf("#%s<br><H1>%s</H1>",
 611                                         buf, &cmd[4]);
 612                         if (a == 2) {
 613                                 char *pch;
 614                                 int haveChar = 0;
 615                                 int haveNum = 0;
 616                                 int haveOther = 0;
 617                                 int count = 0;
 618                                 pch = buf;
 619                                 while (!IsEmptyStr(pch))
 620                                 {
 621                                         if (isdigit(*pch))
 622                                                 haveNum = 1;
 623                                         else if (isalpha(*pch))
 624                                                 haveChar = 1;
 625                                         else
 626                                                 haveOther = 1;
 627                                         pch ++;
 628                                 }
 629                                 count = pch - buf;
 630                                 if (count > 7)
 631                                         count = 0;
 632                                 switch (count){
 633                                 case 0:
 634                                         pch = _("very weak");
 635                                         break;
 636                                 case 1:
 637                                         pch = _("weak");
 638                                         break;
 639                                 case 2:
 640                                         pch = _("ok");
 641                                         break;
 642                                 case 3:
 643                                 default:
 644                                         pch = _("strong");
 645                                 }
 646
 647                                 wc_printf("PW: %s<br>\n", pch);
 648                         }
 649                         if (a == 3)
 650                                 wc_printf("%s<br>\n", buf);
 651                         if (a == 4)
 652                                 wc_printf("%s<br>\n", buf);
 653                         if (a == 5)
 654                                 wc_printf("%s, ", buf);
 655                         if (a == 6)
 656                                 wc_printf("%s ", buf);
 657                         if (a == 7)
 658                                 wc_printf("%s<br>\n", buf);
 659                         if (a == 8)
 660                                 wc_printf("%s<br>\n", buf);
 661                         if (a == 9)
 662                                 wc_printf(_("Current access level: %d (%s)\n"),
 663                                         atoi(buf), axdefs[atoi(buf)]);
 664                 } while (strcmp(buf, "000"));
 665         } else {
 666                 wc_printf("<H1>%s</H1>%s<br>\n", user, &cmd[4]);
 667         }
 668
 669         wc_printf("<hr />");
 670         wc_printf(_("Select access level for this user:"));
 671         wc_printf("<br>\n");
 672         for (a = 0; a <= 6; ++a) {
 673                 wc_printf("<a href=\"validate?nonce=%d?user=", WC->nonce);
 674                 urlescputs(user);
 675                 wc_printf("&axlevel=%d\">%s</A>&nbsp;&nbsp;&nbsp;\n",
 676                         a, axdefs[a]);
 677         }
 678         wc_printf("<br>\n");
 679
 680         wc_printf("</div>\n");
 681         wc_printf("</td></tr></table>\n");
 682         wDumpContent(1);
 683 }
 684
 685
 686
 687 /*
 688  * Display form for registration.
 689  *
 690  * (Set during_login to 1 if this registration is being performed during
 691  * new user login and will require chaining to the proper screen.)
 692  */
 693 void display_reg(int during_login)
 694 {
 695         folder Room;
 696         StrBuf *Buf;
 697         message_summary *VCMsg = NULL;
 698         wc_mime_attachment *VCAtt = NULL;
 699         long vcard_msgnum;
 700
 701         Buf = NewStrBuf();
 702         memset(&Room, 0, sizeof(folder));
 703         if (goto_config_room(Buf, &Room) != 0) {
 704                 syslog(9, "display_reg() exiting because goto_config_room() failed\n");
 705                 if (during_login) {
 706                         do_welcome();
 707                 }
 708                 else {
 709                         display_main_menu();
 710                 }
 711                 FreeStrBuf(&Buf);
 712                 FlushFolder(&Room);
 713                 return;
 714         }
 715         FlushFolder(&Room);
 716
 717         FreeStrBuf(&Buf);
 718         vcard_msgnum = locate_user_vcard_in_this_room(&VCMsg, &VCAtt);
 719         if (vcard_msgnum < 0L) {
 720                 syslog(9, "display_reg() exiting because locate_user_vcard_in_this_room() failed\n");
 721                 if (during_login) {
 722                         do_welcome();
 723                 }
 724                 else {
 725                         display_main_menu();
 726                 }
 727                 return;
 728         }
 729
 730         if (during_login) {
 731                 do_edit_vcard(vcard_msgnum, "1", VCMsg, VCAtt, "do_welcome", USERCONFIGROOM);
 732         }
 733         else {
 734                 StrBuf *ReturnTo;
 735                 ReturnTo = NewStrBufPlain(HKEY("display_main_menu?go="));
 736                 StrBufAppendBuf(ReturnTo, WC->CurRoom.name, 0);
 737                 do_edit_vcard(vcard_msgnum, "1", VCMsg, VCAtt, ChrPtr(ReturnTo), USERCONFIGROOM);
 738                 FreeStrBuf(&ReturnTo);
 739         }
 740
 741         /* FIXME - don't we have to free VCMsg and VCAtt ?? */
 742 }
 743
 744
 745
 746
 747 /*
 748  * display form for changing your password
 749  */
 750 void display_changepw(void)
 751 {
 752         WCTemplputParams SubTP;
 753         char buf[SIZ];
 754         StrBuf *Buf;
 755         output_headers(1, 1, 1, 0, 0, 0);
 756
 757         Buf = NewStrBufPlain(_("Change your password"), -1);
 758         memset(&SubTP, 0, sizeof(WCTemplputParams));
 759         SubTP.Filter.ContextType = CTX_STRBUF;
 760         SubTP.Context = Buf;
 761         DoTemplate(HKEY("beginbox"), NULL, &SubTP);
 762
 763         FreeStrBuf(&Buf);
 764
 765         if (!IsEmptyStr(WC->ImportantMessage)) {
 766                 wc_printf("<span class=\"errormsg\">"
 767                         "%s</span><br>\n", WC->ImportantMessage);
 768                 safestrncpy(WC->ImportantMessage, "", sizeof WC->ImportantMessage);
 769         }
 770
 771         serv_puts("MESG changepw");
 772         serv_getln(buf, sizeof buf);
 773         if (buf[0] == '1') {
 774                 fmout("CENTER");
 775         }
 776
 777         wc_printf("<form name=\"changepwform\" action=\"changepw\" method=\"post\">\n");
 778         wc_printf("<input type=\"hidden\" name=\"nonce\" value=\"%d\">\n", WC->nonce);
 779         wc_printf("<table class=\"altern\" ");
 780         wc_printf("<tr class=\"even\"><td>");
 781         wc_printf(_("Enter new password:"));
 782         wc_printf("</td><td>");
 783         wc_printf("<input type=\"password\" name=\"newpass1\" value=\"\" maxlength=\"20\"></td></tr>\n");
 784         wc_printf("<tr class=\"odd\"><td>");
 785         wc_printf(_("Enter it again to confirm:"));
 786         wc_printf("</td><td>");
 787         wc_printf("<input type=\"password\" name=\"newpass2\" value=\"\" maxlength=\"20\"></td></tr>\n");
 788         wc_printf("</table>\n");
 789
 790         wc_printf("<div class=\"buttons\">\n");
 791         wc_printf("<input type=\"submit\" name=\"change_action\" value=\"%s\">", _("Change password"));
 792         wc_printf("&nbsp;");
 793         wc_printf("<input type=\"submit\" name=\"cancel_action\" value=\"%s\">\n", _("Cancel"));
 794         wc_printf("</div>\n");
 795         wc_printf("</form>\n");
 796
 797         do_template("endbox", NULL);
 798         wDumpContent(1);
 799 }
 800
 801 /*
 802  * change password
 803  * if passwords match, propagate it to citserver.
 804  */
 805 void changepw(void)
 806 {
 807         char buf[SIZ];
 808         char newpass1[32], newpass2[32];
 809
 810         if (!havebstr("change_action")) {
 811                 safestrncpy(WC->ImportantMessage,
 812                         _("Cancelled.  Password was not changed."),
 813                         sizeof WC->ImportantMessage);
 814                 display_main_menu();
 815                 return;
 816         }
 817
 818         safestrncpy(newpass1, bstr("newpass1"), sizeof newpass1);
 819         safestrncpy(newpass2, bstr("newpass2"), sizeof newpass2);
 820
 821         if (strcasecmp(newpass1, newpass2)) {
 822                 safestrncpy(WC->ImportantMessage,
 823                         _("They don't match.  Password was not changed."),
 824                         sizeof WC->ImportantMessage);
 825                 display_changepw();
 826                 return;
 827         }
 828
 829         if (IsEmptyStr(newpass1)) {
 830                 safestrncpy(WC->ImportantMessage,
 831                         _("Blank passwords are not allowed."),
 832                         sizeof WC->ImportantMessage);
 833                 display_changepw();
 834                 return;
 835         }
 836
 837         serv_printf("SETP %s", newpass1);
 838         serv_getln(buf, sizeof buf);
 839         sprintf(WC->ImportantMessage, "%s", &buf[4]);
 840         if (buf[0] == '2') {
 841                 if (WC->wc_password == NULL)
 842                         WC->wc_password = NewStrBufPlain(buf, -1);
 843                 else {
 844                         FlushStrBuf(WC->wc_password);
 845                         StrBufAppendBufPlain(WC->wc_password,  buf, -1, 0);
 846                 }
 847                 display_main_menu();
 848         }
 849         else {
 850                 display_changepw();
 851         }
 852 }
 853
 854 int ConditionalHaveAccessCreateRoom(StrBuf *Target, WCTemplputParams *TP)
 855 {
 856         StrBuf *Buf;
 857
 858         Buf = NewStrBuf();
 859         serv_puts("CRE8 0");
 860         StrBuf_ServGetln(Buf);
 861
 862         if (GetServerStatus(Buf, NULL) == 2) {
 863                 StrBufCutLeft(Buf, 4);
 864                 AppendImportantMessage(SKEY(Buf));
 865                 FreeStrBuf(&Buf);
 866                 return 0;
 867         }
 868         FreeStrBuf(&Buf);
 869         return 1;
 870 }
 871
 872 int ConditionalAide(StrBuf *Target, WCTemplputParams *TP)
 873 {
 874         wcsession *WCC = WC;
 875         return (WCC != NULL) ? ((WCC->logged_in == 0)||(WC->is_aide == 0)) : 0;
 876 }
 877
 878 int ConditionalIsLoggedIn(StrBuf *Target, WCTemplputParams *TP)
 879 {
 880         wcsession *WCC = WC;
 881         return (WCC != NULL) ? (WCC->logged_in == 0) : 0;
 882
 883 }
 884
 885
 886
 887 void _display_reg(void) {
 888         display_reg(0);
 889 }
 890
 891
 892 void Header_HandleAuth(StrBuf *Line, ParsedHttpHdrs *hdr)
 893 {
 894         if (hdr->HR.got_auth == NO_AUTH) /* don't override cookie auth... */
 895         {
 896                 if (strncasecmp(ChrPtr(Line), "Basic", 5) == 0) {
 897                         StrBufCutLeft(Line, 6);
 898                         StrBufDecodeBase64(Line);
 899                         hdr->HR.plainauth = Line;
 900                         hdr->HR.got_auth = AUTH_BASIC;
 901                 }
 902                 else
 903                         syslog(1, "Authentication scheme not supported! [%s]\n", ChrPtr(Line));
 904         }
 905 }
 906
 907 void CheckAuthBasic(ParsedHttpHdrs *hdr)
 908 {
 909 /*
 910   todo: enable this if we can have other sessions than authenticated ones.
 911         if (hdr->DontNeedAuth)
 912                 return;
 913 */
 914         StrBufAppendBufPlain(hdr->HR.plainauth, HKEY(":"), 0);
 915         StrBufAppendBuf(hdr->HR.plainauth, hdr->HR.user_agent, 0);
 916         hdr->HR.SessionKey = hashlittle(SKEY(hdr->HR.plainauth), 89479832);
 917 /*
 918         syslog(1, "CheckAuthBasic: calculated sessionkey %ld\n",
 919                 hdr->HR.SessionKey);
 920 */
 921 }
 922
 923 void GetAuthBasic(ParsedHttpHdrs *hdr)
 924 {
 925         const char *Pos = NULL;
 926         if (hdr->c_username == NULL)
 927                 hdr->c_username = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_USER));
 928         if (hdr->c_password == NULL)
 929                 hdr->c_password = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_PASS));
 930         StrBufExtract_NextToken(hdr->c_username, hdr->HR.plainauth, &Pos, ':');
 931         StrBufExtract_NextToken(hdr->c_password, hdr->HR.plainauth, &Pos, ':');
 932 }
 933
 934 void Header_HandleCookie(StrBuf *Line, ParsedHttpHdrs *hdr)
 935 {
 936         const char *pch;
 937 /*
 938   todo: enable this if we can have other sessions than authenticated ones.
 939         if (hdr->DontNeedAuth)
 940                 return;
 941 */
 942         pch = strstr(ChrPtr(Line), "webcit=");
 943         if (pch == NULL) {
 944                 return;
 945         }
 946
 947         hdr->HR.RawCookie = Line;
 948         StrBufCutLeft(hdr->HR.RawCookie, (pch - ChrPtr(hdr->HR.RawCookie)) + 7);
 949         StrBufDecodeHex(hdr->HR.RawCookie);
 950
 951         cookie_to_stuff(Line, &hdr->HR.desired_session,
 952                         hdr->c_username,
 953                         hdr->c_password,
 954                         hdr->c_roomname,
 955                         hdr->c_language
 956         );
 957         hdr->HR.got_auth = AUTH_COOKIE;
 958 }
 959
 960 void
 961 HttpNewModule_AUTH
 962 (ParsedHttpHdrs *httpreq)
 963 {
 964         httpreq->c_username = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_USER));
 965         httpreq->c_password = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_PASS));
 966         httpreq->c_roomname = NewStrBuf();
 967         httpreq->c_language = NewStrBuf();
 968 }
 969 void
 970 HttpDetachModule_AUTH
 971 (ParsedHttpHdrs *httpreq)
 972 {
 973         FLUSHStrBuf(httpreq->c_username);
 974         FLUSHStrBuf(httpreq->c_password);
 975         FLUSHStrBuf(httpreq->c_roomname);
 976         FLUSHStrBuf(httpreq->c_language);
 977 }
 978
 979 void
 980 HttpDestroyModule_AUTH
 981 (ParsedHttpHdrs *httpreq)
 982 {
 983         FreeStrBuf(&httpreq->c_username);
 984         FreeStrBuf(&httpreq->c_password);
 985         FreeStrBuf(&httpreq->c_roomname);
 986         FreeStrBuf(&httpreq->c_language);
 987 }
 988
 989 void
 990 InitModule_AUTH
 991 (void)
 992 {
 993         initialize_axdefs();
 994         RegisterHeaderHandler(HKEY("COOKIE"), Header_HandleCookie);
 995         RegisterHeaderHandler(HKEY("AUTHORIZATION"), Header_HandleAuth);
 996
 997         /* no url pattern at all? Show login. */
 998         WebcitAddUrlHandler(HKEY(""), "", 0, do_welcome, ANONYMOUS|COOKIEUNNEEDED);
 999
1000         /* some of these will be removed soon */
1001         WebcitAddUrlHandler(HKEY("do_welcome"), "", 0, do_welcome, ANONYMOUS|COOKIEUNNEEDED);
1002         WebcitAddUrlHandler(HKEY("openid_login"), "", 0, do_openid_login, ANONYMOUS);
1003         WebcitAddUrlHandler(HKEY("finalize_openid_login"), "", 0, finalize_openid_login, ANONYMOUS);
1004         WebcitAddUrlHandler(HKEY("openid_manual_create"), "", 0, openid_manual_create, ANONYMOUS);
1005         WebcitAddUrlHandler(HKEY("validate"), "", 0, validate, 0);
1006         WebcitAddUrlHandler(HKEY("do_welcome"), "", 0, do_welcome, 0);
1007         WebcitAddUrlHandler(HKEY("display_reg"), "", 0, _display_reg, 0);
1008         WebcitAddUrlHandler(HKEY("display_changepw"), "", 0, display_changepw, 0);
1009         WebcitAddUrlHandler(HKEY("changepw"), "", 0, changepw, 0);
1010         WebcitAddUrlHandler(HKEY("termquit"), "", 0, do_logout, 0);
1011         WebcitAddUrlHandler(HKEY("do_logout"), "", 0, do_logout, ANONYMOUS|COOKIEUNNEEDED|FORCE_SESSIONCLOSE);
1012         WebcitAddUrlHandler(HKEY("ajax_login_username_password"), "", 0, ajax_login_username_password, AJAX|ANONYMOUS);
1013         WebcitAddUrlHandler(HKEY("ajax_login_newuser"), "", 0, ajax_login_newuser, AJAX|ANONYMOUS);
1014         RegisterConditional(HKEY("COND:AIDE"), 2, ConditionalAide, CTX_NONE);
1015         RegisterConditional(HKEY("COND:LOGGEDIN"), 2, ConditionalIsLoggedIn, CTX_NONE);
1016         RegisterConditional(HKEY("COND:MAY_CREATE_ROOM"), 2,  ConditionalHaveAccessCreateRoom, CTX_NONE);
1017         return;
1018 }
1019
1020
1021 void
1022 SessionDestroyModule_AUTH
1023 (wcsession *sess)
1024 {
1025         FreeStrBuf(&sess->wc_username);
1026         FreeStrBuf(&sess->wc_fullname);
1027         FreeStrBuf(&sess->wc_password);
1028         FreeStrBuf(&sess->httpauth_pass);
1029         FreeStrBuf(&sess->cs_inet_email);
1030 }