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         if (havebstr("language")) {
 317                 set_selected_language(bstr("language"));
 318                 go_selected_language();
 319         }
 320
 321         if (havebstr("exit_action")) {
 322                 do_logout();
 323                 return;
 324         }
 325         if (havebstr("login_action")) {
 326                 snprintf(buf, sizeof buf,
 327                         "OIDS %s|%s/finalize_openid_login|%s",
 328                         bstr("openid_url"),
 329                         ChrPtr(site_prefix),
 330                         ChrPtr(site_prefix)
 331                 );
 332
 333                 serv_puts(buf);
 334                 serv_getln(buf, sizeof buf);
 335                 if (buf[0] == '2') {
 336                         syslog(LOG_DEBUG, "OpenID server contacted; redirecting to %s\n", &buf[4]);
 337                         http_redirect(&buf[4]);
 338                         return;
 339                 }
 340                 else {
 341                         display_login();
 342                         return;
 343                 }
 344         }
 345
 346         /* If we get to this point then something failed. */
 347         display_login();
 348 }
 349
 350 /*
 351  * Complete the authentication using OpenID
 352  * This function handles the positive or negative assertion from the user's Identity Provider
 353  */
 354 void finalize_openid_login(void)
 355 {
 356         StrBuf *Buf;
 357         wcsession *WCC = WC;
 358         int already_logged_in = (WCC->logged_in) ;
 359         int linecount = 0;
 360         StrBuf *result = NULL;
 361         StrBuf *username = NULL;
 362         StrBuf *password = NULL;
 363         StrBuf *logged_in_response = NULL;
 364         StrBuf *claimed_id = NULL;
 365
 366         if (havebstr("openid.mode")) {
 367                 if (!strcasecmp(bstr("openid.mode"), "id_res")) {
 368                         Buf = NewStrBuf();
 369                         serv_puts("OIDF");
 370                         StrBuf_ServGetln(Buf);
 371                         if (GetServerStatus(Buf, NULL) == 8) {
 372                                 urlcontent *u;
 373                                 void *U;
 374                                 long HKLen;
 375                                 const char *HKey;
 376                                 HashPos *Cursor;
 377
 378                                 Cursor = GetNewHashPos (WCC->Hdr->urlstrings, 0);
 379                                 while (GetNextHashPos(WCC->Hdr->urlstrings, Cursor, &HKLen, &HKey, &U)) {
 380                                         u = (urlcontent*) U;
 381                                         if (!strncasecmp(u->url_key, "openid.", 7)) {
 382                                                 serv_printf("%s|%s", &u->url_key[7], ChrPtr(u->url_data));
 383                                         }
 384                                 }
 385
 386                                 serv_puts("000");
 387
 388                                 linecount = 0;
 389                                 while (StrBuf_ServGetln(Buf), strcmp(ChrPtr(Buf), "000"))
 390                                 {
 391                                         if (linecount == 0) result = NewStrBufDup(Buf);
 392                                         if (!strcasecmp(ChrPtr(result), "authenticate")) {
 393                                                 if (linecount == 1) {
 394                                                         username = NewStrBufDup(Buf);
 395                                                 }
 396                                                 else if (linecount == 2) {
 397                                                         password = NewStrBufDup(Buf);
 398                                                 }
 399                                                 else if (linecount == 3) {
 400                                                         logged_in_response = NewStrBufDup(Buf);
 401                                                 }
 402                                         }
 403                                         else if (!strcasecmp(ChrPtr(result), "verify_only")) {
 404                                                 if (linecount == 1) {
 405                                                         claimed_id = NewStrBufDup(Buf);
 406                                                 }
 407                                                 if (linecount == 2) {
 408                                                         username = NewStrBufDup(Buf);
 409                                                 }
 410                                         }
 411                                         ++linecount;
 412                                 }
 413                         }
 414                         FreeStrBuf(&Buf);
 415                 }
 416         }
 417
 418         /* If we were already logged in, this was an attempt to associate an OpenID account */
 419         if (already_logged_in) {
 420                 display_openids();
 421                 FreeStrBuf(&result);
 422                 FreeStrBuf(&username);
 423                 FreeStrBuf(&password);
 424                 FreeStrBuf(&claimed_id);
 425                 FreeStrBuf(&logged_in_response);
 426                 return;
 427         }
 428
 429         /* If this operation logged us in, either by connecting with an existing account or by
 430          * auto-creating one using Simple Registration Extension, we're already on our way.
 431          */
 432         if (!strcasecmp(ChrPtr(result), "authenticate")) {
 433                 become_logged_in(username, password, logged_in_response);
 434         }
 435
 436         /* The specified OpenID was verified but the desired user name was either not specified via SRI
 437          * or conflicts with an existing user.  Either way the user will need to specify a new name.
 438          */
 439
 440         else if (!strcasecmp(ChrPtr(result), "verify_only")) {
 441                 putbstr("__claimed_id", claimed_id);
 442                 claimed_id = NULL;
 443                 if (StrLength(username) > 0) {
 444                         putbstr("__username", username);
 445                         username = NULL;
 446                 }
 447                 begin_burst();
 448                 do_template("openid_manual_create", NULL);
 449                 end_burst();
 450         }
 451
 452         /* Did we manage to log in?  If so, continue with the normal flow... */
 453         else if (WC->logged_in) {
 454                 if (WC->need_regi) {
 455                         display_reg(1);
 456                 } else {
 457                         do_welcome();
 458                 }
 459         } else {
 460                 display_login();
 461         }
 462
 463         FreeStrBuf(&result);
 464         FreeStrBuf(&username);
 465         FreeStrBuf(&password);
 466         FreeStrBuf(&claimed_id);
 467         FreeStrBuf(&logged_in_response);
 468 }
 469
 470
 471 /*
 472  * Display a welcome screen to the user.
 473  *
 474  * If this is the first time login, and the web based setup is enabled,
 475  * lead the user through the setup routines
 476  */
 477 void do_welcome(void)
 478 {
 479         StrBuf *Buf;
 480 #ifdef XXX_NOT_FINISHED_YET_XXX
 481         FILE *fp;
 482         int i;
 483
 484         /**
 485          * See if we have to run the first-time setup wizard
 486          */
 487         if (WC->is_aide) {
 488                 if (!setup_wizard) {
 489                         int len;
 490                         sprintf(wizard_filename, "setupwiz.%s.%s",
 491                                 ctdlhost, ctdlport);
 492                         len = strlen(wizard_filename);
 493                         for (i=0; i<len; ++i) {
 494                                 if (    (wizard_filename[i]==' ')
 495                                         || (wizard_filename[i] == '/')
 496                                 ) {
 497                                         wizard_filename[i] = '_';
 498                                 }
 499                         }
 500
 501                         fp = fopen(wizard_filename, "r");
 502                         if (fp != NULL) {
 503                                 fgets(buf, sizeof buf, fp);
 504                                 buf[strlen(buf)-1] = 0;
 505                                 fclose(fp);
 506                                 if (atoi(buf) == serv_info.serv_rev_level) {
 507                                         setup_wizard = 1; /**< already run */
 508                                 }
 509                         }
 510                 }
 511
 512                 if (!setup_wizard) {
 513                         http_redirect("setup_wizard");
 514                 }
 515         }
 516 #endif
 517
 518         /*
 519          * Go to the user's preferred start page
 520          */
 521         if (!get_preference("startpage", &Buf)) {
 522                 Buf = NewStrBuf ();
 523                 StrBufPrintf(Buf, "dotskip?room=_BASEROOM_");
 524                 set_preference("startpage", Buf, 1);
 525         }
 526         if (ChrPtr(Buf)[0] == '/') {
 527                 StrBufCutLeft(Buf, 1);
 528         }
 529         if (StrLength(Buf) == 0) {
 530                 StrBufAppendBufPlain(Buf, "dotgoto?room=_BASEROOM_", -1, 0);
 531         }
 532         lprintf(9, "Redirecting to user's start page: %s\n", ChrPtr(Buf));
 533         http_redirect(ChrPtr(Buf));
 534 }
 535
 536
 537 /*
 538  * Disconnect from the Citadel server, and end this WebCit session
 539  */
 540 void end_webcit_session(void) {
 541
 542         serv_puts("QUIT");
 543         WC->killthis = 1;
 544         /* close() of citadel socket will be done by do_housekeeping() */
 545 }
 546
 547 /*
 548  * execute the logout
 549  */
 550 void do_logout(void)
 551 {
 552         wcsession *WCC = WC;
 553         char buf[SIZ];
 554
 555         FlushStrBuf(WCC->wc_username);
 556         FlushStrBuf(WCC->wc_password);
 557         FlushStrBuf(WCC->wc_fullname);
 558
 559         serv_puts("LOUT");
 560         serv_getln(buf, sizeof buf);
 561         WCC->logged_in = 0;
 562
 563         if (WC->serv_info->serv_supports_guest) {
 564                 display_default_landing_page();
 565                 return;
 566         }
 567
 568         FlushStrBuf(WCC->CurRoom.name);
 569
 570         /* Calling output_headers() this way causes the cookies to be un-set */
 571         output_headers(1, 1, 0, 1, 0, 0);
 572
 573         wc_printf("<div id=\"logout_screen\">");
 574         wc_printf("<div class=\"box\">");
 575         wc_printf("<div class=\"boxlabel\">");
 576         wc_printf(_("Log off"));
 577         wc_printf("</div><div class=\"boxcontent\">");
 578         serv_puts("MESG goodbye");
 579         serv_getln(buf, sizeof buf);
 580
 581         if (WCC->serv_sock >= 0) {
 582                 if (buf[0] == '1') {
 583                         fmout("'CENTER'");
 584                 } else {
 585                         wc_printf("Goodbye\n");
 586                 }
 587         }
 588         else {
 589                 wc_printf(_("This program was unable to connect or stay "
 590                         "connected to the Citadel server.  Please report "
 591                         "this problem to your system administrator.")
 592                 );
 593                 wc_printf("<a href=\"http://www.citadel.org/doku.php/"
 594                         "faq:mastering_your_os:net#netstat\">%s</a>",
 595                         _("Read More..."));
 596         }
 597
 598         wc_printf("<hr /><div class=\"buttons\"> "
 599                 "<span class=\"button_link\"><a href=\".\">");
 600         wc_printf(_("Log in again"));
 601         wc_printf("</a></span>");
 602         wc_printf("</div></div></div>\n");
 603         wDumpContent(2);
 604         end_webcit_session();
 605 }
 606
 607
 608 /*
 609  * validate new users
 610  */
 611 void validate(void)
 612 {
 613         char cmd[SIZ];
 614         char user[SIZ];
 615         char buf[SIZ];
 616         int a;
 617
 618         output_headers(1, 1, 2, 0, 0, 0);
 619         wc_printf("<div id=\"banner\">\n");
 620         wc_printf("<h1>");
 621         wc_printf(_("Validate new users"));
 622         wc_printf("</h1>");
 623         wc_printf("</div>\n");
 624
 625         wc_printf("<div id=\"content\" class=\"service\">\n");
 626
 627         /* If the user just submitted a validation, process it... */
 628         safestrncpy(buf, bstr("user"), sizeof buf);
 629         if (!IsEmptyStr(buf)) {
 630                 if (havebstr("axlevel")) {
 631                         serv_printf("VALI %s|%s", buf, bstr("axlevel"));
 632                         serv_getln(buf, sizeof buf);
 633                         if (buf[0] != '2') {
 634                                 wc_printf("<b>%s</b><br>\n", &buf[4]);
 635                         }
 636                 }
 637         }
 638
 639         /* Now see if any more users require validation. */
 640         serv_puts("GNUR");
 641         serv_getln(buf, sizeof buf);
 642         if (buf[0] == '2') {
 643                 wc_printf("<b>");
 644                 wc_printf(_("No users require validation at this time."));
 645                 wc_printf("</b><br>\n");
 646                 wDumpContent(1);
 647                 return;
 648         }
 649         if (buf[0] != '3') {
 650                 wc_printf("<b>%s</b><br>\n", &buf[4]);
 651                 wDumpContent(1);
 652                 return;
 653         }
 654
 655         wc_printf("<table class=\"auth_validate\"><tr><td>\n");
 656         wc_printf("<div id=\"validate\">");
 657
 658         safestrncpy(user, &buf[4], sizeof user);
 659         serv_printf("GREG %s", user);
 660         serv_getln(cmd, sizeof cmd);
 661         if (cmd[0] == '1') {
 662                 a = 0;
 663                 do {
 664                         serv_getln(buf, sizeof buf);
 665                         ++a;
 666                         if (a == 1)
 667                                 wc_printf("#%s<br><H1>%s</H1>",
 668                                         buf, &cmd[4]);
 669                         if (a == 2) {
 670                                 char *pch;
 671                                 int haveChar = 0;
 672                                 int haveNum = 0;
 673                                 int haveOther = 0;
 674                                 int count = 0;
 675                                 pch = buf;
 676                                 while (!IsEmptyStr(pch))
 677                                 {
 678                                         if (isdigit(*pch))
 679                                                 haveNum = 1;
 680                                         else if (isalpha(*pch))
 681                                                 haveChar = 1;
 682                                         else
 683                                                 haveOther = 1;
 684                                         pch ++;
 685                                 }
 686                                 count = pch - buf;
 687                                 if (count > 7)
 688                                         count = 0;
 689                                 switch (count){
 690                                 case 0:
 691                                         pch = _("very weak");
 692                                         break;
 693                                 case 1:
 694                                         pch = _("weak");
 695                                         break;
 696                                 case 2:
 697                                         pch = _("ok");
 698                                         break;
 699                                 case 3:
 700                                 default:
 701                                         pch = _("strong");
 702                                 }
 703
 704                                 wc_printf("PW: %s<br>\n", pch);
 705                         }
 706                         if (a == 3)
 707                                 wc_printf("%s<br>\n", buf);
 708                         if (a == 4)
 709                                 wc_printf("%s<br>\n", buf);
 710                         if (a == 5)
 711                                 wc_printf("%s, ", buf);
 712                         if (a == 6)
 713                                 wc_printf("%s ", buf);
 714                         if (a == 7)
 715                                 wc_printf("%s<br>\n", buf);
 716                         if (a == 8)
 717                                 wc_printf("%s<br>\n", buf);
 718                         if (a == 9)
 719                                 wc_printf(_("Current access level: %d (%s)\n"),
 720                                         atoi(buf), axdefs[atoi(buf)]);
 721                 } while (strcmp(buf, "000"));
 722         } else {
 723                 wc_printf("<H1>%s</H1>%s<br>\n", user, &cmd[4]);
 724         }
 725
 726         wc_printf("<hr />");
 727         wc_printf(_("Select access level for this user:"));
 728         wc_printf("<br>\n");
 729         for (a = 0; a <= 6; ++a) {
 730                 wc_printf("<a href=\"validate?nonce=%d?user=", WC->nonce);
 731                 urlescputs(user);
 732                 wc_printf("&axlevel=%d\">%s</A>&nbsp;&nbsp;&nbsp;\n",
 733                         a, axdefs[a]);
 734         }
 735         wc_printf("<br>\n");
 736
 737         wc_printf("</div>\n");
 738         wc_printf("</td></tr></table>\n");
 739         wDumpContent(1);
 740 }
 741
 742
 743
 744 /*
 745  * Display form for registration.
 746  *
 747  * (Set during_login to 1 if this registration is being performed during
 748  * new user login and will require chaining to the proper screen.)
 749  */
 750 void display_reg(int during_login)
 751 {
 752         folder Room;
 753         StrBuf *Buf;
 754         message_summary *VCMsg = NULL;
 755         wc_mime_attachment *VCAtt = NULL;
 756         long vcard_msgnum;
 757
 758         Buf = NewStrBuf();
 759         memset(&Room, 0, sizeof(folder));
 760         if (goto_config_room(Buf, &Room) != 0) {
 761                 lprintf(9, "display_reg() exiting because goto_config_room() failed\n");
 762                 if (during_login) {
 763                         do_welcome();
 764                 }
 765                 else {
 766                         display_main_menu();
 767                 }
 768                 FreeStrBuf(&Buf);
 769                 FlushFolder(&Room);
 770                 return;
 771         }
 772         FlushFolder(&Room);
 773
 774         FreeStrBuf(&Buf);
 775         vcard_msgnum = locate_user_vcard_in_this_room(&VCMsg, &VCAtt);
 776         if (vcard_msgnum < 0L) {
 777                 lprintf(9, "display_reg() exiting because locate_user_vcard_in_this_room() failed\n");
 778                 if (during_login) {
 779                         do_welcome();
 780                 }
 781                 else {
 782                         display_main_menu();
 783                 }
 784                 return;
 785         }
 786
 787         if (during_login) {
 788                 do_edit_vcard(vcard_msgnum, "1", VCMsg, VCAtt, "do_welcome", USERCONFIGROOM);
 789         }
 790         else {
 791                 StrBuf *ReturnTo;
 792                 ReturnTo = NewStrBufPlain(HKEY("display_main_menu?go="));
 793                 StrBufAppendBuf(ReturnTo, WC->CurRoom.name, 0);
 794                 do_edit_vcard(vcard_msgnum, "1", VCMsg, VCAtt, ChrPtr(ReturnTo), USERCONFIGROOM);
 795                 FreeStrBuf(&ReturnTo);
 796         }
 797
 798         /* FIXME - don't we have to free VCMsg and VCAtt ?? */
 799 }
 800
 801
 802
 803
 804 /*
 805  * display form for changing your password
 806  */
 807 void display_changepw(void)
 808 {
 809         WCTemplputParams SubTP;
 810         char buf[SIZ];
 811         StrBuf *Buf;
 812         output_headers(1, 1, 1, 0, 0, 0);
 813
 814         Buf = NewStrBufPlain(_("Change your password"), -1);
 815         memset(&SubTP, 0, sizeof(WCTemplputParams));
 816         SubTP.Filter.ContextType = CTX_STRBUF;
 817         SubTP.Context = Buf;
 818         DoTemplate(HKEY("beginbox"), NULL, &SubTP);
 819
 820         FreeStrBuf(&Buf);
 821
 822         if (!IsEmptyStr(WC->ImportantMessage)) {
 823                 wc_printf("<span class=\"errormsg\">"
 824                         "%s</span><br>\n", WC->ImportantMessage);
 825                 safestrncpy(WC->ImportantMessage, "", sizeof WC->ImportantMessage);
 826         }
 827
 828         serv_puts("MESG changepw");
 829         serv_getln(buf, sizeof buf);
 830         if (buf[0] == '1') {
 831                 fmout("CENTER");
 832         }
 833
 834         wc_printf("<form name=\"changepwform\" action=\"changepw\" method=\"post\">\n");
 835         wc_printf("<input type=\"hidden\" name=\"nonce\" value=\"%d\">\n", WC->nonce);
 836         wc_printf("<table class=\"altern\" ");
 837         wc_printf("<tr class=\"even\"><td>");
 838         wc_printf(_("Enter new password:"));
 839         wc_printf("</td><td>");
 840         wc_printf("<input type=\"password\" name=\"newpass1\" value=\"\" maxlength=\"20\"></td></tr>\n");
 841         wc_printf("<tr class=\"odd\"><td>");
 842         wc_printf(_("Enter it again to confirm:"));
 843         wc_printf("</td><td>");
 844         wc_printf("<input type=\"password\" name=\"newpass2\" value=\"\" maxlength=\"20\"></td></tr>\n");
 845         wc_printf("</table>\n");
 846
 847         wc_printf("<div class=\"buttons\">\n");
 848         wc_printf("<input type=\"submit\" name=\"change_action\" value=\"%s\">", _("Change password"));
 849         wc_printf("&nbsp;");
 850         wc_printf("<input type=\"submit\" name=\"cancel_action\" value=\"%s\">\n", _("Cancel"));
 851         wc_printf("</div>\n");
 852         wc_printf("</form>\n");
 853
 854         do_template("endbox", NULL);
 855         wDumpContent(1);
 856 }
 857
 858 /*
 859  * change password
 860  * if passwords match, propagate it to citserver.
 861  */
 862 void changepw(void)
 863 {
 864         char buf[SIZ];
 865         char newpass1[32], newpass2[32];
 866
 867         if (!havebstr("change_action")) {
 868                 safestrncpy(WC->ImportantMessage,
 869                         _("Cancelled.  Password was not changed."),
 870                         sizeof WC->ImportantMessage);
 871                 display_main_menu();
 872                 return;
 873         }
 874
 875         safestrncpy(newpass1, bstr("newpass1"), sizeof newpass1);
 876         safestrncpy(newpass2, bstr("newpass2"), sizeof newpass2);
 877
 878         if (strcasecmp(newpass1, newpass2)) {
 879                 safestrncpy(WC->ImportantMessage,
 880                         _("They don't match.  Password was not changed."),
 881                         sizeof WC->ImportantMessage);
 882                 display_changepw();
 883                 return;
 884         }
 885
 886         if (IsEmptyStr(newpass1)) {
 887                 safestrncpy(WC->ImportantMessage,
 888                         _("Blank passwords are not allowed."),
 889                         sizeof WC->ImportantMessage);
 890                 display_changepw();
 891                 return;
 892         }
 893
 894         serv_printf("SETP %s", newpass1);
 895         serv_getln(buf, sizeof buf);
 896         sprintf(WC->ImportantMessage, "%s", &buf[4]);
 897         if (buf[0] == '2') {
 898                 if (WC->wc_password == NULL)
 899                         WC->wc_password = NewStrBufPlain(buf, -1);
 900                 else {
 901                         FlushStrBuf(WC->wc_password);
 902                         StrBufAppendBufPlain(WC->wc_password,  buf, -1, 0);
 903                 }
 904                 display_main_menu();
 905         }
 906         else {
 907                 display_changepw();
 908         }
 909 }
 910
 911 int ConditionalHaveAccessCreateRoom(StrBuf *Target, WCTemplputParams *TP)
 912 {
 913         StrBuf *Buf;
 914
 915         Buf = NewStrBuf();
 916         serv_puts("CRE8 0");
 917         StrBuf_ServGetln(Buf);
 918
 919         if (GetServerStatus(Buf, NULL) == 2) {
 920                 StrBufCutLeft(Buf, 4);
 921                 AppendImportantMessage(SKEY(Buf));
 922                 FreeStrBuf(&Buf);
 923                 return 0;
 924         }
 925         FreeStrBuf(&Buf);
 926         return 1;
 927 }
 928
 929 int ConditionalAide(StrBuf *Target, WCTemplputParams *TP)
 930 {
 931         wcsession *WCC = WC;
 932         return (WCC != NULL)? (WC->is_aide == 0) : 0;
 933 }
 934
 935 int ConditionalIsLoggedIn(StrBuf *Target, WCTemplputParams *TP)
 936 {
 937         wcsession *WCC = WC;
 938         return (WCC != NULL)? (WCC->logged_in == 0) : 0;
 939
 940 }
 941
 942
 943
 944 void _display_reg(void) {
 945         display_reg(0);
 946 }
 947
 948
 949 void Header_HandleAuth(StrBuf *Line, ParsedHttpHdrs *hdr)
 950 {
 951         if (hdr->HR.got_auth == NO_AUTH) /* don't override cookie auth... */
 952         {
 953                 if (strncasecmp(ChrPtr(Line), "Basic", 5) == 0) {
 954                         StrBufCutLeft(Line, 6);
 955                         StrBufDecodeBase64(Line);
 956                         hdr->HR.plainauth = Line;
 957                         hdr->HR.got_auth = AUTH_BASIC;
 958                 }
 959                 else
 960                         lprintf(1, "Authentication scheme not supported! [%s]\n", ChrPtr(Line));
 961         }
 962 }
 963
 964 void CheckAuthBasic(ParsedHttpHdrs *hdr)
 965 {
 966 /*
 967   todo: enable this if we can have other sessions than authenticated ones.
 968         if (hdr->DontNeedAuth)
 969                 return;
 970 */
 971         StrBufAppendBufPlain(hdr->HR.plainauth, HKEY(":"), 0);
 972         StrBufAppendBuf(hdr->HR.plainauth, hdr->HR.user_agent, 0);
 973         hdr->HR.SessionKey = hashlittle(SKEY(hdr->HR.plainauth), 89479832);
 974 /*
 975         lprintf(1, "CheckAuthBasic: calculated sessionkey %ld\n",
 976                 hdr->HR.SessionKey);
 977 */
 978 }
 979
 980 void GetAuthBasic(ParsedHttpHdrs *hdr)
 981 {
 982         const char *Pos = NULL;
 983         if (hdr->c_username == NULL)
 984                 hdr->c_username = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_USER));
 985         if (hdr->c_password == NULL)
 986                 hdr->c_password = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_PASS));
 987         StrBufExtract_NextToken(hdr->c_username, hdr->HR.plainauth, &Pos, ':');
 988         StrBufExtract_NextToken(hdr->c_password, hdr->HR.plainauth, &Pos, ':');
 989 }
 990
 991 void Header_HandleCookie(StrBuf *Line, ParsedHttpHdrs *hdr)
 992 {
 993         const char *pch;
 994 /*
 995   todo: enable this if we can have other sessions than authenticated ones.
 996         if (hdr->DontNeedAuth)
 997                 return;
 998 */
 999         pch = strstr(ChrPtr(Line), "webcit=");
1000         if (pch == NULL) {
1001                 return;
1002         }
1003
1004         hdr->HR.RawCookie = Line;
1005         StrBufCutLeft(hdr->HR.RawCookie, (pch - ChrPtr(hdr->HR.RawCookie)) + 7);
1006         StrBufDecodeHex(hdr->HR.RawCookie);
1007
1008         cookie_to_stuff(Line, &hdr->HR.desired_session,
1009                         hdr->c_username,
1010                         hdr->c_password,
1011                         hdr->c_roomname,
1012                         hdr->c_language
1013         );
1014         hdr->HR.got_auth = AUTH_COOKIE;
1015 }
1016
1017 void
1018 HttpNewModule_AUTH
1019 (ParsedHttpHdrs *httpreq)
1020 {
1021         httpreq->c_username = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_USER));
1022         httpreq->c_password = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_PASS));
1023         httpreq->c_roomname = NewStrBuf();
1024         httpreq->c_language = NewStrBuf();
1025 }
1026 void
1027 HttpDetachModule_AUTH
1028 (ParsedHttpHdrs *httpreq)
1029 {
1030         FLUSHStrBuf(httpreq->c_username);
1031         FLUSHStrBuf(httpreq->c_password);
1032         FLUSHStrBuf(httpreq->c_roomname);
1033         FLUSHStrBuf(httpreq->c_language);
1034 }
1035
1036 void
1037 HttpDestroyModule_AUTH
1038 (ParsedHttpHdrs *httpreq)
1039 {
1040         FreeStrBuf(&httpreq->c_username);
1041         FreeStrBuf(&httpreq->c_password);
1042         FreeStrBuf(&httpreq->c_roomname);
1043         FreeStrBuf(&httpreq->c_language);
1044 }
1045
1046 void
1047 InitModule_AUTH
1048 (void)
1049 {
1050         initialize_axdefs();
1051         RegisterHeaderHandler(HKEY("COOKIE"), Header_HandleCookie);
1052         RegisterHeaderHandler(HKEY("AUTHORIZATION"), Header_HandleAuth);
1053
1054         /* no url pattern at all? Show login. */
1055         WebcitAddUrlHandler(HKEY(""), "", 0, do_welcome, ANONYMOUS|COOKIEUNNEEDED);
1056
1057         /* some of these will be removed soon */
1058         WebcitAddUrlHandler(HKEY("do_welcome"), "", 0, do_welcome, ANONYMOUS|COOKIEUNNEEDED);
1059         WebcitAddUrlHandler(HKEY("login"), "", 0, do_login, ANONYMOUS|COOKIEUNNEEDED);
1060         WebcitAddUrlHandler(HKEY("openid_login"), "", 0, do_openid_login, ANONYMOUS);
1061         WebcitAddUrlHandler(HKEY("finalize_openid_login"), "", 0, finalize_openid_login, ANONYMOUS);
1062         WebcitAddUrlHandler(HKEY("openid_manual_create"), "", 0, openid_manual_create, ANONYMOUS);
1063         WebcitAddUrlHandler(HKEY("validate"), "", 0, validate, 0);
1064         WebcitAddUrlHandler(HKEY("do_welcome"), "", 0, do_welcome, 0);
1065         WebcitAddUrlHandler(HKEY("display_reg"), "", 0, _display_reg, 0);
1066         WebcitAddUrlHandler(HKEY("display_changepw"), "", 0, display_changepw, 0);
1067         WebcitAddUrlHandler(HKEY("changepw"), "", 0, changepw, 0);
1068         WebcitAddUrlHandler(HKEY("termquit"), "", 0, do_logout, 0);
1069         WebcitAddUrlHandler(HKEY("do_logout"), "", 0, do_logout, ANONYMOUS|COOKIEUNNEEDED|FORCE_SESSIONCLOSE);
1070         WebcitAddUrlHandler(HKEY("ajax_login_username_password"), "", 0,
1071                 ajax_login_username_password, AJAX|ANONYMOUS);
1072
1073         RegisterConditional(HKEY("COND:AIDE"), 2, ConditionalAide, CTX_NONE);
1074         RegisterConditional(HKEY("COND:LOGGEDIN"), 2, ConditionalIsLoggedIn, CTX_NONE);
1075         RegisterConditional(HKEY("COND:MAY_CREATE_ROOM"), 2,  ConditionalHaveAccessCreateRoom, CTX_NONE);
1076         return;
1077 }
1078
1079
1080 void
1081 SessionDestroyModule_AUTH
1082 (wcsession *sess)
1083 {
1084         FreeStrBuf(&sess->wc_username);
1085         FreeStrBuf(&sess->wc_fullname);
1086         FreeStrBuf(&sess->wc_password);
1087         FreeStrBuf(&sess->httpauth_pass);
1088         FreeStrBuf(&sess->cs_inet_email);
1089 }