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  * Perform authentication using a user name and password
 145  */
 146 void do_login(void)
 147 {
 148         wcsession *WCC = WC;
 149         StrBuf *Buf;
 150         long ret, rc;
 151
 152         if (havebstr("language")) {
 153                 set_selected_language(bstr("language"));
 154                 go_selected_language();
 155         }
 156
 157         if (havebstr("exit_action")) {
 158                 do_logout();
 159                 return;
 160         }
 161         Buf = NewStrBuf();
 162         if (havebstr("login_action")) {
 163                 serv_printf("USER %s", bstr("name"));
 164                 StrBuf_ServGetln(Buf);
 165                 rc = GetServerStatus(Buf, &ret);
 166                 StrBufCutLeft(Buf, 4);
 167                 switch (rc) {
 168                 case 3:
 169                         serv_printf("PASS %s", bstr("pass"));
 170                         StrBuf_ServGetln(Buf);
 171                         if (GetServerStatus(Buf, NULL) == 2) {
 172                                 become_logged_in(sbstr("name"), sbstr("pass"), Buf);
 173                         } else {
 174                                 StrBufCutLeft(Buf, 4);
 175                                 AppendImportantMessage(SKEY(Buf));
 176                                 display_login();
 177                                 FreeStrBuf(&Buf);
 178                                 return;
 179                         }
 180                         break;
 181                 case 5:
 182                         if (ret == 541)
 183                         {
 184                                 AppendImportantMessage(SKEY(Buf));
 185                                 display_main_menu();
 186                                 return;
 187                         }
 188                 default:
 189                         AppendImportantMessage(SKEY(Buf));
 190                         display_login();
 191                         FreeStrBuf(&Buf);
 192                         return;
 193                 }
 194         }
 195         if (havebstr("newuser_action")) {
 196                 if (!havebstr("pass")) {
 197                         AppendImportantMessage(_("Blank passwords are not allowed."), -1);
 198                         display_login();
 199                         FreeStrBuf(&Buf);
 200                         return;
 201                 }
 202                 serv_printf("NEWU %s", bstr("name"));
 203                 StrBuf_ServGetln(Buf);
 204                 if (GetServerStatus(Buf, NULL) == 2) {
 205                         become_logged_in(sbstr("name"), sbstr("pass"), Buf);
 206                         serv_printf("SETP %s", bstr("pass"));
 207                         StrBuf_ServGetln(Buf); /* Don't care? */
 208                 } else {
 209                         StrBufCutLeft(Buf, 4);
 210                         AppendImportantMessage(SKEY(Buf));
 211                         display_login();
 212                         FreeStrBuf(&Buf);
 213                         return;
 214                 }
 215         }
 216         if (WCC->logged_in) {
 217                 if (WCC->need_regi) {
 218                         display_reg(1);
 219                 } else if (WCC->need_vali) {
 220                         validate();
 221                 } else {
 222                         do_welcome();
 223                 }
 224         } else {
 225                 AppendImportantMessage(_("Your password was not accepted."), -1);
 226                 display_login();
 227         }
 228         FreeStrBuf(&Buf);
 229 }
 230
 231
 232
 233 /*
 234  * modal/ajax version of 'login' (username and password)
 235  */
 236 void ajax_login_username_password(void) {
 237         StrBuf *Buf = NewStrBuf();
 238
 239         serv_printf("USER %s", bstr("name"));
 240         StrBuf_ServGetln(Buf);
 241         if (GetServerStatus(Buf, NULL) == 3) {
 242                 serv_printf("PASS %s", bstr("pass"));
 243                 StrBuf_ServGetln(Buf);
 244                 if (GetServerStatus(Buf, NULL) == 2) {
 245                         become_logged_in(sbstr("name"), sbstr("pass"), Buf);
 246                 }
 247         }
 248
 249         /* The client is expecting to read back a citadel protocol response */
 250         wc_printf("%s", ChrPtr(Buf));
 251         FreeStrBuf(&Buf);
 252 }
 253
 254
 255
 256 /*
 257  * Try to create an account manually after an OpenID was verified
 258  */
 259 void openid_manual_create(void)
 260 {
 261         StrBuf *Buf;
 262
 263         if (havebstr("exit_action")) {
 264                 do_logout();
 265                 return;
 266         }
 267
 268         if (havebstr("newuser_action")) {
 269                 Buf = NewStrBuf();
 270                 serv_printf("OIDC %s", bstr("name"));
 271                 StrBuf_ServGetln(Buf);
 272                 if (GetServerStatus(Buf, NULL) == 2) {
 273                         StrBuf *gpass;
 274
 275                         gpass = NewStrBuf();
 276                         serv_puts("SETP GENERATE_RANDOM_PASSWORD");
 277                         StrBuf_ServGetln(gpass);
 278                         StrBufCutLeft(gpass, 4);
 279                         become_logged_in(sbstr("name"), gpass, Buf);
 280                         FreeStrBuf(&gpass);
 281                 }
 282                 FreeStrBuf(&Buf);
 283         }
 284
 285         if (WC->logged_in) {
 286                 if (WC->need_regi) {
 287                         display_reg(1);
 288                 } else if (WC->need_vali) {
 289                         validate();
 290                 } else {
 291                         do_welcome();
 292                 }
 293         } else {
 294                 const StrBuf *Buf;
 295
 296                 putbstr("__claimed_id", NewStrBufDup(sbstr("openid_url")));
 297                 Buf = sbstr("name");
 298                 if (StrLength(Buf) > 0)
 299                         putbstr("__username", NewStrBufDup(Buf));
 300                 begin_burst();
 301                 do_template("openid_manual_create", NULL);
 302                 end_burst();
 303         }
 304
 305 }
 306
 307
 308 /*
 309  * Perform authentication using OpenID
 310  * assemble the checkid_setup request and then redirect to the user's identity provider
 311  */
 312 void do_openid_login(void)
 313 {
 314         char buf[4096];
 315
 316         snprintf(buf, sizeof buf,
 317                 "OIDS %s|%s/finalize_openid_login|%s",
 318                 bstr("openid_url"),
 319                 ChrPtr(site_prefix),
 320                 ChrPtr(site_prefix)
 321         );
 322
 323         serv_puts(buf);
 324         serv_getln(buf, sizeof buf);
 325         if (buf[0] == '2') {
 326                 syslog(LOG_DEBUG, "OpenID server contacted; redirecting to %s\n", &buf[4]);
 327                 http_redirect(&buf[4]);
 328                 return;
 329         }
 330
 331         convenience_page("770000", _("Error"), &buf[4]);
 332 }
 333
 334
 335 /*
 336  * Complete the authentication using OpenID
 337  * This function handles the positive or negative assertion from the user's Identity Provider
 338  */
 339 void finalize_openid_login(void)
 340 {
 341         StrBuf *Buf;
 342         wcsession *WCC = WC;
 343         int already_logged_in = (WCC->logged_in) ;
 344         int linecount = 0;
 345         StrBuf *result = NULL;
 346         StrBuf *username = NULL;
 347         StrBuf *password = NULL;
 348         StrBuf *logged_in_response = NULL;
 349         StrBuf *claimed_id = NULL;
 350
 351         if (havebstr("openid.mode")) {
 352                 if (!strcasecmp(bstr("openid.mode"), "id_res")) {
 353                         Buf = NewStrBuf();
 354                         serv_puts("OIDF");
 355                         StrBuf_ServGetln(Buf);
 356                         if (GetServerStatus(Buf, NULL) == 8) {
 357                                 urlcontent *u;
 358                                 void *U;
 359                                 long HKLen;
 360                                 const char *HKey;
 361                                 HashPos *Cursor;
 362
 363                                 Cursor = GetNewHashPos (WCC->Hdr->urlstrings, 0);
 364                                 while (GetNextHashPos(WCC->Hdr->urlstrings, Cursor, &HKLen, &HKey, &U)) {
 365                                         u = (urlcontent*) U;
 366                                         if (!strncasecmp(u->url_key, "openid.", 7)) {
 367                                                 serv_printf("%s|%s", &u->url_key[7], ChrPtr(u->url_data));
 368                                         }
 369                                 }
 370
 371                                 serv_puts("000");
 372
 373                                 linecount = 0;
 374                                 while (StrBuf_ServGetln(Buf), strcmp(ChrPtr(Buf), "000"))
 375                                 {
 376                                         if (linecount == 0) result = NewStrBufDup(Buf);
 377                                         if (!strcasecmp(ChrPtr(result), "authenticate")) {
 378                                                 if (linecount == 1) {
 379                                                         username = NewStrBufDup(Buf);
 380                                                 }
 381                                                 else if (linecount == 2) {
 382                                                         password = NewStrBufDup(Buf);
 383                                                 }
 384                                                 else if (linecount == 3) {
 385                                                         logged_in_response = NewStrBufDup(Buf);
 386                                                 }
 387                                         }
 388                                         else if (!strcasecmp(ChrPtr(result), "verify_only")) {
 389                                                 if (linecount == 1) {
 390                                                         claimed_id = NewStrBufDup(Buf);
 391                                                 }
 392                                                 if (linecount == 2) {
 393                                                         username = NewStrBufDup(Buf);
 394                                                 }
 395                                         }
 396                                         ++linecount;
 397                                 }
 398                         }
 399                         FreeStrBuf(&Buf);
 400                 }
 401         }
 402
 403         /* If we were already logged in, this was an attempt to associate an OpenID account */
 404         if (already_logged_in) {
 405                 display_openids();
 406                 FreeStrBuf(&result);
 407                 FreeStrBuf(&username);
 408                 FreeStrBuf(&password);
 409                 FreeStrBuf(&claimed_id);
 410                 FreeStrBuf(&logged_in_response);
 411                 return;
 412         }
 413
 414         /* If this operation logged us in, either by connecting with an existing account or by
 415          * auto-creating one using Simple Registration Extension, we're already on our way.
 416          */
 417         if (!strcasecmp(ChrPtr(result), "authenticate")) {
 418                 become_logged_in(username, password, logged_in_response);
 419         }
 420
 421         /* The specified OpenID was verified but the desired user name was either not specified via SRI
 422          * or conflicts with an existing user.  Either way the user will need to specify a new name.
 423          */
 424
 425         else if (!strcasecmp(ChrPtr(result), "verify_only")) {
 426                 putbstr("__claimed_id", claimed_id);
 427                 claimed_id = NULL;
 428                 if (StrLength(username) > 0) {
 429                         putbstr("__username", username);
 430                         username = NULL;
 431                 }
 432                 begin_burst();
 433                 do_template("openid_manual_create", NULL);
 434                 end_burst();
 435         }
 436
 437         /* Did we manage to log in?  If so, continue with the normal flow... */
 438         else if (WC->logged_in) {
 439                 if (WC->need_regi) {
 440                         display_reg(1);
 441                 } else {
 442                         do_welcome();
 443                 }
 444         } else {
 445                 display_login();
 446         }
 447
 448         FreeStrBuf(&result);
 449         FreeStrBuf(&username);
 450         FreeStrBuf(&password);
 451         FreeStrBuf(&claimed_id);
 452         FreeStrBuf(&logged_in_response);
 453 }
 454
 455
 456 /*
 457  * Display a welcome screen to the user.
 458  *
 459  * If this is the first time login, and the web based setup is enabled,
 460  * lead the user through the setup routines
 461  */
 462 void do_welcome(void)
 463 {
 464         StrBuf *Buf;
 465 #ifdef XXX_NOT_FINISHED_YET_XXX
 466         FILE *fp;
 467         int i;
 468
 469         /**
 470          * See if we have to run the first-time setup wizard
 471          */
 472         if (WC->is_aide) {
 473                 if (!setup_wizard) {
 474                         int len;
 475                         sprintf(wizard_filename, "setupwiz.%s.%s",
 476                                 ctdlhost, ctdlport);
 477                         len = strlen(wizard_filename);
 478                         for (i=0; i<len; ++i) {
 479                                 if (    (wizard_filename[i]==' ')
 480                                         || (wizard_filename[i] == '/')
 481                                 ) {
 482                                         wizard_filename[i] = '_';
 483                                 }
 484                         }
 485
 486                         fp = fopen(wizard_filename, "r");
 487                         if (fp != NULL) {
 488                                 fgets(buf, sizeof buf, fp);
 489                                 buf[strlen(buf)-1] = 0;
 490                                 fclose(fp);
 491                                 if (atoi(buf) == serv_info.serv_rev_level) {
 492                                         setup_wizard = 1; /**< already run */
 493                                 }
 494                         }
 495                 }
 496
 497                 if (!setup_wizard) {
 498                         http_redirect("setup_wizard");
 499                 }
 500         }
 501 #endif
 502
 503         /*
 504          * Go to the user's preferred start page
 505          */
 506         if (!get_preference("startpage", &Buf)) {
 507                 Buf = NewStrBuf ();
 508                 StrBufPrintf(Buf, "dotskip?room=_BASEROOM_");
 509                 set_preference("startpage", Buf, 1);
 510         }
 511         if (ChrPtr(Buf)[0] == '/') {
 512                 StrBufCutLeft(Buf, 1);
 513         }
 514         if (StrLength(Buf) == 0) {
 515                 StrBufAppendBufPlain(Buf, "dotgoto?room=_BASEROOM_", -1, 0);
 516         }
 517         syslog(9, "Redirecting to user's start page: %s\n", ChrPtr(Buf));
 518         http_redirect(ChrPtr(Buf));
 519 }
 520
 521
 522 /*
 523  * Disconnect from the Citadel server, and end this WebCit session
 524  */
 525 void end_webcit_session(void) {
 526
 527         serv_puts("QUIT");
 528         WC->killthis = 1;
 529         /* close() of citadel socket will be done by do_housekeeping() */
 530 }
 531
 532 /*
 533  * execute the logout
 534  */
 535 void do_logout(void)
 536 {
 537         wcsession *WCC = WC;
 538         char buf[SIZ];
 539
 540         FlushStrBuf(WCC->wc_username);
 541         FlushStrBuf(WCC->wc_password);
 542         FlushStrBuf(WCC->wc_fullname);
 543
 544         serv_puts("LOUT");
 545         serv_getln(buf, sizeof buf);
 546         WCC->logged_in = 0;
 547
 548         if (WC->serv_info->serv_supports_guest) {
 549                 display_default_landing_page();
 550                 return;
 551         }
 552
 553         FlushStrBuf(WCC->CurRoom.name);
 554
 555         /* Calling output_headers() this way causes the cookies to be un-set */
 556         output_headers(1, 1, 0, 1, 0, 0);
 557
 558         wc_printf("<div id=\"logout_screen\">");
 559         wc_printf("<div class=\"box\">");
 560         wc_printf("<div class=\"boxlabel\">");
 561         wc_printf(_("Log off"));
 562         wc_printf("</div><div class=\"boxcontent\">");
 563         serv_puts("MESG goodbye");
 564         serv_getln(buf, sizeof buf);
 565
 566         if (WCC->serv_sock >= 0) {
 567                 if (buf[0] == '1') {
 568                         fmout("'CENTER'");
 569                 } else {
 570                         wc_printf("Goodbye\n");
 571                 }
 572         }
 573         else {
 574                 wc_printf(_("This program was unable to connect or stay "
 575                         "connected to the Citadel server.  Please report "
 576                         "this problem to your system administrator.")
 577                 );
 578                 wc_printf("<a href=\"http://www.citadel.org/doku.php/"
 579                         "faq:mastering_your_os:net#netstat\">%s</a>",
 580                         _("Read More..."));
 581         }
 582
 583         wc_printf("<hr /><div class=\"buttons\"> "
 584                 "<span class=\"button_link\"><a href=\".\">");
 585         wc_printf(_("Log in again"));
 586         wc_printf("</a></span>");
 587         wc_printf("</div></div></div>\n");
 588         wDumpContent(2);
 589         end_webcit_session();
 590 }
 591
 592
 593 /*
 594  * validate new users
 595  */
 596 void validate(void)
 597 {
 598         char cmd[SIZ];
 599         char user[SIZ];
 600         char buf[SIZ];
 601         int a;
 602
 603         output_headers(1, 1, 2, 0, 0, 0);
 604         wc_printf("<div id=\"banner\">\n");
 605         wc_printf("<h1>");
 606         wc_printf(_("Validate new users"));
 607         wc_printf("</h1>");
 608         wc_printf("</div>\n");
 609
 610         wc_printf("<div id=\"content\" class=\"service\">\n");
 611
 612         /* If the user just submitted a validation, process it... */
 613         safestrncpy(buf, bstr("user"), sizeof buf);
 614         if (!IsEmptyStr(buf)) {
 615                 if (havebstr("axlevel")) {
 616                         serv_printf("VALI %s|%s", buf, bstr("axlevel"));
 617                         serv_getln(buf, sizeof buf);
 618                         if (buf[0] != '2') {
 619                                 wc_printf("<b>%s</b><br>\n", &buf[4]);
 620                         }
 621                 }
 622         }
 623
 624         /* Now see if any more users require validation. */
 625         serv_puts("GNUR");
 626         serv_getln(buf, sizeof buf);
 627         if (buf[0] == '2') {
 628                 wc_printf("<b>");
 629                 wc_printf(_("No users require validation at this time."));
 630                 wc_printf("</b><br>\n");
 631                 wDumpContent(1);
 632                 return;
 633         }
 634         if (buf[0] != '3') {
 635                 wc_printf("<b>%s</b><br>\n", &buf[4]);
 636                 wDumpContent(1);
 637                 return;
 638         }
 639
 640         wc_printf("<table class=\"auth_validate\"><tr><td>\n");
 641         wc_printf("<div id=\"validate\">");
 642
 643         safestrncpy(user, &buf[4], sizeof user);
 644         serv_printf("GREG %s", user);
 645         serv_getln(cmd, sizeof cmd);
 646         if (cmd[0] == '1') {
 647                 a = 0;
 648                 do {
 649                         serv_getln(buf, sizeof buf);
 650                         ++a;
 651                         if (a == 1)
 652                                 wc_printf("#%s<br><H1>%s</H1>",
 653                                         buf, &cmd[4]);
 654                         if (a == 2) {
 655                                 char *pch;
 656                                 int haveChar = 0;
 657                                 int haveNum = 0;
 658                                 int haveOther = 0;
 659                                 int count = 0;
 660                                 pch = buf;
 661                                 while (!IsEmptyStr(pch))
 662                                 {
 663                                         if (isdigit(*pch))
 664                                                 haveNum = 1;
 665                                         else if (isalpha(*pch))
 666                                                 haveChar = 1;
 667                                         else
 668                                                 haveOther = 1;
 669                                         pch ++;
 670                                 }
 671                                 count = pch - buf;
 672                                 if (count > 7)
 673                                         count = 0;
 674                                 switch (count){
 675                                 case 0:
 676                                         pch = _("very weak");
 677                                         break;
 678                                 case 1:
 679                                         pch = _("weak");
 680                                         break;
 681                                 case 2:
 682                                         pch = _("ok");
 683                                         break;
 684                                 case 3:
 685                                 default:
 686                                         pch = _("strong");
 687                                 }
 688
 689                                 wc_printf("PW: %s<br>\n", pch);
 690                         }
 691                         if (a == 3)
 692                                 wc_printf("%s<br>\n", buf);
 693                         if (a == 4)
 694                                 wc_printf("%s<br>\n", buf);
 695                         if (a == 5)
 696                                 wc_printf("%s, ", buf);
 697                         if (a == 6)
 698                                 wc_printf("%s ", buf);
 699                         if (a == 7)
 700                                 wc_printf("%s<br>\n", buf);
 701                         if (a == 8)
 702                                 wc_printf("%s<br>\n", buf);
 703                         if (a == 9)
 704                                 wc_printf(_("Current access level: %d (%s)\n"),
 705                                         atoi(buf), axdefs[atoi(buf)]);
 706                 } while (strcmp(buf, "000"));
 707         } else {
 708                 wc_printf("<H1>%s</H1>%s<br>\n", user, &cmd[4]);
 709         }
 710
 711         wc_printf("<hr />");
 712         wc_printf(_("Select access level for this user:"));
 713         wc_printf("<br>\n");
 714         for (a = 0; a <= 6; ++a) {
 715                 wc_printf("<a href=\"validate?nonce=%d?user=", WC->nonce);
 716                 urlescputs(user);
 717                 wc_printf("&axlevel=%d\">%s</A>&nbsp;&nbsp;&nbsp;\n",
 718                         a, axdefs[a]);
 719         }
 720         wc_printf("<br>\n");
 721
 722         wc_printf("</div>\n");
 723         wc_printf("</td></tr></table>\n");
 724         wDumpContent(1);
 725 }
 726
 727
 728
 729 /*
 730  * Display form for registration.
 731  *
 732  * (Set during_login to 1 if this registration is being performed during
 733  * new user login and will require chaining to the proper screen.)
 734  */
 735 void display_reg(int during_login)
 736 {
 737         folder Room;
 738         StrBuf *Buf;
 739         message_summary *VCMsg = NULL;
 740         wc_mime_attachment *VCAtt = NULL;
 741         long vcard_msgnum;
 742
 743         Buf = NewStrBuf();
 744         memset(&Room, 0, sizeof(folder));
 745         if (goto_config_room(Buf, &Room) != 0) {
 746                 syslog(9, "display_reg() exiting because goto_config_room() failed\n");
 747                 if (during_login) {
 748                         do_welcome();
 749                 }
 750                 else {
 751                         display_main_menu();
 752                 }
 753                 FreeStrBuf(&Buf);
 754                 FlushFolder(&Room);
 755                 return;
 756         }
 757         FlushFolder(&Room);
 758
 759         FreeStrBuf(&Buf);
 760         vcard_msgnum = locate_user_vcard_in_this_room(&VCMsg, &VCAtt);
 761         if (vcard_msgnum < 0L) {
 762                 syslog(9, "display_reg() exiting because locate_user_vcard_in_this_room() failed\n");
 763                 if (during_login) {
 764                         do_welcome();
 765                 }
 766                 else {
 767                         display_main_menu();
 768                 }
 769                 return;
 770         }
 771
 772         if (during_login) {
 773                 do_edit_vcard(vcard_msgnum, "1", VCMsg, VCAtt, "do_welcome", USERCONFIGROOM);
 774         }
 775         else {
 776                 StrBuf *ReturnTo;
 777                 ReturnTo = NewStrBufPlain(HKEY("display_main_menu?go="));
 778                 StrBufAppendBuf(ReturnTo, WC->CurRoom.name, 0);
 779                 do_edit_vcard(vcard_msgnum, "1", VCMsg, VCAtt, ChrPtr(ReturnTo), USERCONFIGROOM);
 780                 FreeStrBuf(&ReturnTo);
 781         }
 782
 783         /* FIXME - don't we have to free VCMsg and VCAtt ?? */
 784 }
 785
 786
 787
 788
 789 /*
 790  * display form for changing your password
 791  */
 792 void display_changepw(void)
 793 {
 794         WCTemplputParams SubTP;
 795         char buf[SIZ];
 796         StrBuf *Buf;
 797         output_headers(1, 1, 1, 0, 0, 0);
 798
 799         Buf = NewStrBufPlain(_("Change your password"), -1);
 800         memset(&SubTP, 0, sizeof(WCTemplputParams));
 801         SubTP.Filter.ContextType = CTX_STRBUF;
 802         SubTP.Context = Buf;
 803         DoTemplate(HKEY("beginbox"), NULL, &SubTP);
 804
 805         FreeStrBuf(&Buf);
 806
 807         if (!IsEmptyStr(WC->ImportantMessage)) {
 808                 wc_printf("<span class=\"errormsg\">"
 809                         "%s</span><br>\n", WC->ImportantMessage);
 810                 safestrncpy(WC->ImportantMessage, "", sizeof WC->ImportantMessage);
 811         }
 812
 813         serv_puts("MESG changepw");
 814         serv_getln(buf, sizeof buf);
 815         if (buf[0] == '1') {
 816                 fmout("CENTER");
 817         }
 818
 819         wc_printf("<form name=\"changepwform\" action=\"changepw\" method=\"post\">\n");
 820         wc_printf("<input type=\"hidden\" name=\"nonce\" value=\"%d\">\n", WC->nonce);
 821         wc_printf("<table class=\"altern\" ");
 822         wc_printf("<tr class=\"even\"><td>");
 823         wc_printf(_("Enter new password:"));
 824         wc_printf("</td><td>");
 825         wc_printf("<input type=\"password\" name=\"newpass1\" value=\"\" maxlength=\"20\"></td></tr>\n");
 826         wc_printf("<tr class=\"odd\"><td>");
 827         wc_printf(_("Enter it again to confirm:"));
 828         wc_printf("</td><td>");
 829         wc_printf("<input type=\"password\" name=\"newpass2\" value=\"\" maxlength=\"20\"></td></tr>\n");
 830         wc_printf("</table>\n");
 831
 832         wc_printf("<div class=\"buttons\">\n");
 833         wc_printf("<input type=\"submit\" name=\"change_action\" value=\"%s\">", _("Change password"));
 834         wc_printf("&nbsp;");
 835         wc_printf("<input type=\"submit\" name=\"cancel_action\" value=\"%s\">\n", _("Cancel"));
 836         wc_printf("</div>\n");
 837         wc_printf("</form>\n");
 838
 839         do_template("endbox", NULL);
 840         wDumpContent(1);
 841 }
 842
 843 /*
 844  * change password
 845  * if passwords match, propagate it to citserver.
 846  */
 847 void changepw(void)
 848 {
 849         char buf[SIZ];
 850         char newpass1[32], newpass2[32];
 851
 852         if (!havebstr("change_action")) {
 853                 safestrncpy(WC->ImportantMessage,
 854                         _("Cancelled.  Password was not changed."),
 855                         sizeof WC->ImportantMessage);
 856                 display_main_menu();
 857                 return;
 858         }
 859
 860         safestrncpy(newpass1, bstr("newpass1"), sizeof newpass1);
 861         safestrncpy(newpass2, bstr("newpass2"), sizeof newpass2);
 862
 863         if (strcasecmp(newpass1, newpass2)) {
 864                 safestrncpy(WC->ImportantMessage,
 865                         _("They don't match.  Password was not changed."),
 866                         sizeof WC->ImportantMessage);
 867                 display_changepw();
 868                 return;
 869         }
 870
 871         if (IsEmptyStr(newpass1)) {
 872                 safestrncpy(WC->ImportantMessage,
 873                         _("Blank passwords are not allowed."),
 874                         sizeof WC->ImportantMessage);
 875                 display_changepw();
 876                 return;
 877         }
 878
 879         serv_printf("SETP %s", newpass1);
 880         serv_getln(buf, sizeof buf);
 881         sprintf(WC->ImportantMessage, "%s", &buf[4]);
 882         if (buf[0] == '2') {
 883                 if (WC->wc_password == NULL)
 884                         WC->wc_password = NewStrBufPlain(buf, -1);
 885                 else {
 886                         FlushStrBuf(WC->wc_password);
 887                         StrBufAppendBufPlain(WC->wc_password,  buf, -1, 0);
 888                 }
 889                 display_main_menu();
 890         }
 891         else {
 892                 display_changepw();
 893         }
 894 }
 895
 896 int ConditionalHaveAccessCreateRoom(StrBuf *Target, WCTemplputParams *TP)
 897 {
 898         StrBuf *Buf;
 899
 900         Buf = NewStrBuf();
 901         serv_puts("CRE8 0");
 902         StrBuf_ServGetln(Buf);
 903
 904         if (GetServerStatus(Buf, NULL) == 2) {
 905                 StrBufCutLeft(Buf, 4);
 906                 AppendImportantMessage(SKEY(Buf));
 907                 FreeStrBuf(&Buf);
 908                 return 0;
 909         }
 910         FreeStrBuf(&Buf);
 911         return 1;
 912 }
 913
 914 int ConditionalAide(StrBuf *Target, WCTemplputParams *TP)
 915 {
 916         wcsession *WCC = WC;
 917         return (WCC != NULL)? (WC->is_aide == 0) : 0;
 918 }
 919
 920 int ConditionalIsLoggedIn(StrBuf *Target, WCTemplputParams *TP)
 921 {
 922         wcsession *WCC = WC;
 923         return (WCC != NULL)? (WCC->logged_in == 0) : 0;
 924
 925 }
 926
 927
 928
 929 void _display_reg(void) {
 930         display_reg(0);
 931 }
 932
 933
 934 void Header_HandleAuth(StrBuf *Line, ParsedHttpHdrs *hdr)
 935 {
 936         if (hdr->HR.got_auth == NO_AUTH) /* don't override cookie auth... */
 937         {
 938                 if (strncasecmp(ChrPtr(Line), "Basic", 5) == 0) {
 939                         StrBufCutLeft(Line, 6);
 940                         StrBufDecodeBase64(Line);
 941                         hdr->HR.plainauth = Line;
 942                         hdr->HR.got_auth = AUTH_BASIC;
 943                 }
 944                 else
 945                         syslog(1, "Authentication scheme not supported! [%s]\n", ChrPtr(Line));
 946         }
 947 }
 948
 949 void CheckAuthBasic(ParsedHttpHdrs *hdr)
 950 {
 951 /*
 952   todo: enable this if we can have other sessions than authenticated ones.
 953         if (hdr->DontNeedAuth)
 954                 return;
 955 */
 956         StrBufAppendBufPlain(hdr->HR.plainauth, HKEY(":"), 0);
 957         StrBufAppendBuf(hdr->HR.plainauth, hdr->HR.user_agent, 0);
 958         hdr->HR.SessionKey = hashlittle(SKEY(hdr->HR.plainauth), 89479832);
 959 /*
 960         syslog(1, "CheckAuthBasic: calculated sessionkey %ld\n",
 961                 hdr->HR.SessionKey);
 962 */
 963 }
 964
 965 void GetAuthBasic(ParsedHttpHdrs *hdr)
 966 {
 967         const char *Pos = NULL;
 968         if (hdr->c_username == NULL)
 969                 hdr->c_username = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_USER));
 970         if (hdr->c_password == NULL)
 971                 hdr->c_password = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_PASS));
 972         StrBufExtract_NextToken(hdr->c_username, hdr->HR.plainauth, &Pos, ':');
 973         StrBufExtract_NextToken(hdr->c_password, hdr->HR.plainauth, &Pos, ':');
 974 }
 975
 976 void Header_HandleCookie(StrBuf *Line, ParsedHttpHdrs *hdr)
 977 {
 978         const char *pch;
 979 /*
 980   todo: enable this if we can have other sessions than authenticated ones.
 981         if (hdr->DontNeedAuth)
 982                 return;
 983 */
 984         pch = strstr(ChrPtr(Line), "webcit=");
 985         if (pch == NULL) {
 986                 return;
 987         }
 988
 989         hdr->HR.RawCookie = Line;
 990         StrBufCutLeft(hdr->HR.RawCookie, (pch - ChrPtr(hdr->HR.RawCookie)) + 7);
 991         StrBufDecodeHex(hdr->HR.RawCookie);
 992
 993         cookie_to_stuff(Line, &hdr->HR.desired_session,
 994                         hdr->c_username,
 995                         hdr->c_password,
 996                         hdr->c_roomname,
 997                         hdr->c_language
 998         );
 999         hdr->HR.got_auth = AUTH_COOKIE;
1000 }
1001
1002 void
1003 HttpNewModule_AUTH
1004 (ParsedHttpHdrs *httpreq)
1005 {
1006         httpreq->c_username = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_USER));
1007         httpreq->c_password = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_PASS));
1008         httpreq->c_roomname = NewStrBuf();
1009         httpreq->c_language = NewStrBuf();
1010 }
1011 void
1012 HttpDetachModule_AUTH
1013 (ParsedHttpHdrs *httpreq)
1014 {
1015         FLUSHStrBuf(httpreq->c_username);
1016         FLUSHStrBuf(httpreq->c_password);
1017         FLUSHStrBuf(httpreq->c_roomname);
1018         FLUSHStrBuf(httpreq->c_language);
1019 }
1020
1021 void
1022 HttpDestroyModule_AUTH
1023 (ParsedHttpHdrs *httpreq)
1024 {
1025         FreeStrBuf(&httpreq->c_username);
1026         FreeStrBuf(&httpreq->c_password);
1027         FreeStrBuf(&httpreq->c_roomname);
1028         FreeStrBuf(&httpreq->c_language);
1029 }
1030
1031 void
1032 InitModule_AUTH
1033 (void)
1034 {
1035         initialize_axdefs();
1036         RegisterHeaderHandler(HKEY("COOKIE"), Header_HandleCookie);
1037         RegisterHeaderHandler(HKEY("AUTHORIZATION"), Header_HandleAuth);
1038
1039         /* no url pattern at all? Show login. */
1040         WebcitAddUrlHandler(HKEY(""), "", 0, do_welcome, ANONYMOUS|COOKIEUNNEEDED);
1041
1042         /* some of these will be removed soon */
1043         WebcitAddUrlHandler(HKEY("do_welcome"), "", 0, do_welcome, ANONYMOUS|COOKIEUNNEEDED);
1044         WebcitAddUrlHandler(HKEY("login"), "", 0, do_login, ANONYMOUS|COOKIEUNNEEDED);
1045         WebcitAddUrlHandler(HKEY("openid_login"), "", 0, do_openid_login, ANONYMOUS);
1046         WebcitAddUrlHandler(HKEY("finalize_openid_login"), "", 0, finalize_openid_login, ANONYMOUS);
1047         WebcitAddUrlHandler(HKEY("openid_manual_create"), "", 0, openid_manual_create, ANONYMOUS);
1048         WebcitAddUrlHandler(HKEY("validate"), "", 0, validate, 0);
1049         WebcitAddUrlHandler(HKEY("do_welcome"), "", 0, do_welcome, 0);
1050         WebcitAddUrlHandler(HKEY("display_reg"), "", 0, _display_reg, 0);
1051         WebcitAddUrlHandler(HKEY("display_changepw"), "", 0, display_changepw, 0);
1052         WebcitAddUrlHandler(HKEY("changepw"), "", 0, changepw, 0);
1053         WebcitAddUrlHandler(HKEY("termquit"), "", 0, do_logout, 0);
1054         WebcitAddUrlHandler(HKEY("do_logout"), "", 0, do_logout, ANONYMOUS|COOKIEUNNEEDED|FORCE_SESSIONCLOSE);
1055         WebcitAddUrlHandler(HKEY("ajax_login_username_password"), "", 0,
1056                 ajax_login_username_password, AJAX|ANONYMOUS);
1057
1058         RegisterConditional(HKEY("COND:AIDE"), 2, ConditionalAide, CTX_NONE);
1059         RegisterConditional(HKEY("COND:LOGGEDIN"), 2, ConditionalIsLoggedIn, CTX_NONE);
1060         RegisterConditional(HKEY("COND:MAY_CREATE_ROOM"), 2,  ConditionalHaveAccessCreateRoom, CTX_NONE);
1061         return;
1062 }
1063
1064
1065 void
1066 SessionDestroyModule_AUTH
1067 (wcsession *sess)
1068 {
1069         FreeStrBuf(&sess->wc_username);
1070         FreeStrBuf(&sess->wc_fullname);
1071         FreeStrBuf(&sess->wc_password);
1072         FreeStrBuf(&sess->httpauth_pass);
1073         FreeStrBuf(&sess->cs_inet_email);
1074 }