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         begin_burst();
 332         output_headers(1, 0, 0, 0, 1, 0);
 333         wc_printf("<html><body>");
 334         escputs(&buf[4]);
 335         wc_printf("</body></html>");
 336         end_burst();
 337 }
 338
 339
 340 /*
 341  * Complete the authentication using OpenID
 342  * This function handles the positive or negative assertion from the user's Identity Provider
 343  */
 344 void finalize_openid_login(void)
 345 {
 346         StrBuf *Buf;
 347         wcsession *WCC = WC;
 348         int already_logged_in = (WCC->logged_in) ;
 349         int linecount = 0;
 350         StrBuf *result = NULL;
 351         StrBuf *username = NULL;
 352         StrBuf *password = NULL;
 353         StrBuf *logged_in_response = NULL;
 354         StrBuf *claimed_id = NULL;
 355
 356         if (havebstr("openid.mode")) {
 357                 if (!strcasecmp(bstr("openid.mode"), "id_res")) {
 358                         Buf = NewStrBuf();
 359                         serv_puts("OIDF");
 360                         StrBuf_ServGetln(Buf);
 361                         if (GetServerStatus(Buf, NULL) == 8) {
 362                                 urlcontent *u;
 363                                 void *U;
 364                                 long HKLen;
 365                                 const char *HKey;
 366                                 HashPos *Cursor;
 367
 368                                 Cursor = GetNewHashPos (WCC->Hdr->urlstrings, 0);
 369                                 while (GetNextHashPos(WCC->Hdr->urlstrings, Cursor, &HKLen, &HKey, &U)) {
 370                                         u = (urlcontent*) U;
 371                                         if (!strncasecmp(u->url_key, "openid.", 7)) {
 372                                                 serv_printf("%s|%s", &u->url_key[7], ChrPtr(u->url_data));
 373                                         }
 374                                 }
 375
 376                                 serv_puts("000");
 377
 378                                 linecount = 0;
 379                                 while (StrBuf_ServGetln(Buf), strcmp(ChrPtr(Buf), "000"))
 380                                 {
 381                                         if (linecount == 0) result = NewStrBufDup(Buf);
 382                                         if (!strcasecmp(ChrPtr(result), "authenticate")) {
 383                                                 if (linecount == 1) {
 384                                                         username = NewStrBufDup(Buf);
 385                                                 }
 386                                                 else if (linecount == 2) {
 387                                                         password = NewStrBufDup(Buf);
 388                                                 }
 389                                                 else if (linecount == 3) {
 390                                                         logged_in_response = NewStrBufDup(Buf);
 391                                                 }
 392                                         }
 393                                         else if (!strcasecmp(ChrPtr(result), "verify_only")) {
 394                                                 if (linecount == 1) {
 395                                                         claimed_id = NewStrBufDup(Buf);
 396                                                 }
 397                                                 if (linecount == 2) {
 398                                                         username = NewStrBufDup(Buf);
 399                                                 }
 400                                         }
 401                                         ++linecount;
 402                                 }
 403                         }
 404                         FreeStrBuf(&Buf);
 405                 }
 406         }
 407
 408         /* If we were already logged in, this was an attempt to associate an OpenID account
 409         FIXME put this back in
 410         if (already_logged_in) {
 411                 display_openids();
 412                 FreeStrBuf(&result);
 413                 FreeStrBuf(&username);
 414                 FreeStrBuf(&password);
 415                 FreeStrBuf(&claimed_id);
 416                 FreeStrBuf(&logged_in_response);
 417                 return;
 418         }
 419         */
 420
 421         /* If this operation logged us in, either by connecting with an existing account or by
 422          * auto-creating one using Simple Registration Extension, we're already on our way.
 423          */
 424         if (!strcasecmp(ChrPtr(result), "authenticate")) {
 425                 become_logged_in(username, password, logged_in_response);
 426         }
 427
 428         /* The specified OpenID was verified but the desired user name was either not specified via SRI
 429          * or conflicts with an existing user.  Either way the user will need to specify a new name.
 430          */
 431
 432 /*
 433         else if (!strcasecmp(ChrPtr(result), "verify_only")) {
 434                 putbstr("__claimed_id", claimed_id);
 435                 claimed_id = NULL;
 436                 if (StrLength(username) > 0) {
 437                         putbstr("__username", username);
 438                         username = NULL;
 439                 }
 440                 begin_burst();
 441                 do_template("openid_manual_create", NULL);
 442                 end_burst();
 443         }
 444 */
 445
 446
 447
 448         /* Did we manage to log in?  If so, continue with the normal flow... */
 449         if (WC->logged_in) {
 450                 begin_burst();
 451                 output_headers(1, 0, 0, 0, 1, 0);
 452                 do_template("authpopup_finished", NULL);
 453                 end_burst();
 454
 455                 /* FIXME make all this crap work again
 456                 if (WC->need_regi) {
 457                         display_reg(1);
 458                 } else {
 459                         do_welcome();
 460                 }
 461                 */
 462
 463         } else {
 464                 /* FIXME do something prettier here? */
 465                 begin_burst();
 466                 output_headers(1, 0, 0, 0, 1, 0);
 467                 wc_printf("<html><body>");
 468                 wc_printf("error");
 469                 wc_printf("</body></html>");
 470                 end_burst();
 471         }
 472
 473         FreeStrBuf(&result);
 474         FreeStrBuf(&username);
 475         FreeStrBuf(&password);
 476         FreeStrBuf(&claimed_id);
 477         FreeStrBuf(&logged_in_response);
 478 }
 479
 480
 481 /*
 482  * Display a welcome screen to the user.
 483  *
 484  * If this is the first time login, and the web based setup is enabled,
 485  * lead the user through the setup routines
 486  */
 487 void do_welcome(void)
 488 {
 489         StrBuf *Buf;
 490 #ifdef XXX_NOT_FINISHED_YET_XXX
 491         FILE *fp;
 492         int i;
 493
 494         /**
 495          * See if we have to run the first-time setup wizard
 496          */
 497         if (WC->is_aide) {
 498                 if (!setup_wizard) {
 499                         int len;
 500                         sprintf(wizard_filename, "setupwiz.%s.%s",
 501                                 ctdlhost, ctdlport);
 502                         len = strlen(wizard_filename);
 503                         for (i=0; i<len; ++i) {
 504                                 if (    (wizard_filename[i]==' ')
 505                                         || (wizard_filename[i] == '/')
 506                                 ) {
 507                                         wizard_filename[i] = '_';
 508                                 }
 509                         }
 510
 511                         fp = fopen(wizard_filename, "r");
 512                         if (fp != NULL) {
 513                                 fgets(buf, sizeof buf, fp);
 514                                 buf[strlen(buf)-1] = 0;
 515                                 fclose(fp);
 516                                 if (atoi(buf) == serv_info.serv_rev_level) {
 517                                         setup_wizard = 1; /**< already run */
 518                                 }
 519                         }
 520                 }
 521
 522                 if (!setup_wizard) {
 523                         http_redirect("setup_wizard");
 524                 }
 525         }
 526 #endif
 527
 528         /*
 529          * Go to the user's preferred start page
 530          */
 531         if (!get_preference("startpage", &Buf)) {
 532                 Buf = NewStrBuf ();
 533                 StrBufPrintf(Buf, "dotskip?room=_BASEROOM_");
 534                 set_preference("startpage", Buf, 1);
 535         }
 536         if (ChrPtr(Buf)[0] == '/') {
 537                 StrBufCutLeft(Buf, 1);
 538         }
 539         if (StrLength(Buf) == 0) {
 540                 StrBufAppendBufPlain(Buf, "dotgoto?room=_BASEROOM_", -1, 0);
 541         }
 542         syslog(9, "Redirecting to user's start page: %s\n", ChrPtr(Buf));
 543         http_redirect(ChrPtr(Buf));
 544 }
 545
 546
 547 /*
 548  * Disconnect from the Citadel server, and end this WebCit session
 549  */
 550 void end_webcit_session(void) {
 551
 552         serv_puts("QUIT");
 553         WC->killthis = 1;
 554         /* close() of citadel socket will be done by do_housekeeping() */
 555 }
 556
 557 /*
 558  * execute the logout
 559  */
 560 void do_logout(void)
 561 {
 562         wcsession *WCC = WC;
 563         char buf[SIZ];
 564
 565         FlushStrBuf(WCC->wc_username);
 566         FlushStrBuf(WCC->wc_password);
 567         FlushStrBuf(WCC->wc_fullname);
 568
 569         serv_puts("LOUT");
 570         serv_getln(buf, sizeof buf);
 571         WCC->logged_in = 0;
 572
 573         if (WC->serv_info->serv_supports_guest) {
 574                 display_default_landing_page();
 575                 return;
 576         }
 577
 578         FlushStrBuf(WCC->CurRoom.name);
 579
 580         /* Calling output_headers() this way causes the cookies to be un-set */
 581         output_headers(1, 1, 0, 1, 0, 0);
 582
 583         wc_printf("<div id=\"logout_screen\">");
 584         wc_printf("<div class=\"box\">");
 585         wc_printf("<div class=\"boxlabel\">");
 586         wc_printf(_("Log off"));
 587         wc_printf("</div><div class=\"boxcontent\">");
 588         serv_puts("MESG goodbye");
 589         serv_getln(buf, sizeof buf);
 590
 591         if (WCC->serv_sock >= 0) {
 592                 if (buf[0] == '1') {
 593                         fmout("'CENTER'");
 594                 } else {
 595                         wc_printf("Goodbye\n");
 596                 }
 597         }
 598         else {
 599                 wc_printf(_("This program was unable to connect or stay "
 600                         "connected to the Citadel server.  Please report "
 601                         "this problem to your system administrator.")
 602                 );
 603                 wc_printf("<a href=\"http://www.citadel.org/doku.php/"
 604                         "faq:mastering_your_os:net#netstat\">%s</a>",
 605                         _("Read More..."));
 606         }
 607
 608         wc_printf("<hr /><div class=\"buttons\"> "
 609                 "<span class=\"button_link\"><a href=\".\">");
 610         wc_printf(_("Log in again"));
 611         wc_printf("</a></span>");
 612         wc_printf("</div></div></div>\n");
 613         wDumpContent(2);
 614         end_webcit_session();
 615 }
 616
 617
 618 /*
 619  * validate new users
 620  */
 621 void validate(void)
 622 {
 623         char cmd[SIZ];
 624         char user[SIZ];
 625         char buf[SIZ];
 626         int a;
 627
 628         output_headers(1, 1, 2, 0, 0, 0);
 629         wc_printf("<div id=\"banner\">\n");
 630         wc_printf("<h1>");
 631         wc_printf(_("Validate new users"));
 632         wc_printf("</h1>");
 633         wc_printf("</div>\n");
 634
 635         wc_printf("<div id=\"content\" class=\"service\">\n");
 636
 637         /* If the user just submitted a validation, process it... */
 638         safestrncpy(buf, bstr("user"), sizeof buf);
 639         if (!IsEmptyStr(buf)) {
 640                 if (havebstr("axlevel")) {
 641                         serv_printf("VALI %s|%s", buf, bstr("axlevel"));
 642                         serv_getln(buf, sizeof buf);
 643                         if (buf[0] != '2') {
 644                                 wc_printf("<b>%s</b><br>\n", &buf[4]);
 645                         }
 646                 }
 647         }
 648
 649         /* Now see if any more users require validation. */
 650         serv_puts("GNUR");
 651         serv_getln(buf, sizeof buf);
 652         if (buf[0] == '2') {
 653                 wc_printf("<b>");
 654                 wc_printf(_("No users require validation at this time."));
 655                 wc_printf("</b><br>\n");
 656                 wDumpContent(1);
 657                 return;
 658         }
 659         if (buf[0] != '3') {
 660                 wc_printf("<b>%s</b><br>\n", &buf[4]);
 661                 wDumpContent(1);
 662                 return;
 663         }
 664
 665         wc_printf("<table class=\"auth_validate\"><tr><td>\n");
 666         wc_printf("<div id=\"validate\">");
 667
 668         safestrncpy(user, &buf[4], sizeof user);
 669         serv_printf("GREG %s", user);
 670         serv_getln(cmd, sizeof cmd);
 671         if (cmd[0] == '1') {
 672                 a = 0;
 673                 do {
 674                         serv_getln(buf, sizeof buf);
 675                         ++a;
 676                         if (a == 1)
 677                                 wc_printf("#%s<br><H1>%s</H1>",
 678                                         buf, &cmd[4]);
 679                         if (a == 2) {
 680                                 char *pch;
 681                                 int haveChar = 0;
 682                                 int haveNum = 0;
 683                                 int haveOther = 0;
 684                                 int count = 0;
 685                                 pch = buf;
 686                                 while (!IsEmptyStr(pch))
 687                                 {
 688                                         if (isdigit(*pch))
 689                                                 haveNum = 1;
 690                                         else if (isalpha(*pch))
 691                                                 haveChar = 1;
 692                                         else
 693                                                 haveOther = 1;
 694                                         pch ++;
 695                                 }
 696                                 count = pch - buf;
 697                                 if (count > 7)
 698                                         count = 0;
 699                                 switch (count){
 700                                 case 0:
 701                                         pch = _("very weak");
 702                                         break;
 703                                 case 1:
 704                                         pch = _("weak");
 705                                         break;
 706                                 case 2:
 707                                         pch = _("ok");
 708                                         break;
 709                                 case 3:
 710                                 default:
 711                                         pch = _("strong");
 712                                 }
 713
 714                                 wc_printf("PW: %s<br>\n", pch);
 715                         }
 716                         if (a == 3)
 717                                 wc_printf("%s<br>\n", buf);
 718                         if (a == 4)
 719                                 wc_printf("%s<br>\n", buf);
 720                         if (a == 5)
 721                                 wc_printf("%s, ", buf);
 722                         if (a == 6)
 723                                 wc_printf("%s ", buf);
 724                         if (a == 7)
 725                                 wc_printf("%s<br>\n", buf);
 726                         if (a == 8)
 727                                 wc_printf("%s<br>\n", buf);
 728                         if (a == 9)
 729                                 wc_printf(_("Current access level: %d (%s)\n"),
 730                                         atoi(buf), axdefs[atoi(buf)]);
 731                 } while (strcmp(buf, "000"));
 732         } else {
 733                 wc_printf("<H1>%s</H1>%s<br>\n", user, &cmd[4]);
 734         }
 735
 736         wc_printf("<hr />");
 737         wc_printf(_("Select access level for this user:"));
 738         wc_printf("<br>\n");
 739         for (a = 0; a <= 6; ++a) {
 740                 wc_printf("<a href=\"validate?nonce=%d?user=", WC->nonce);
 741                 urlescputs(user);
 742                 wc_printf("&axlevel=%d\">%s</A>&nbsp;&nbsp;&nbsp;\n",
 743                         a, axdefs[a]);
 744         }
 745         wc_printf("<br>\n");
 746
 747         wc_printf("</div>\n");
 748         wc_printf("</td></tr></table>\n");
 749         wDumpContent(1);
 750 }
 751
 752
 753
 754 /*
 755  * Display form for registration.
 756  *
 757  * (Set during_login to 1 if this registration is being performed during
 758  * new user login and will require chaining to the proper screen.)
 759  */
 760 void display_reg(int during_login)
 761 {
 762         folder Room;
 763         StrBuf *Buf;
 764         message_summary *VCMsg = NULL;
 765         wc_mime_attachment *VCAtt = NULL;
 766         long vcard_msgnum;
 767
 768         Buf = NewStrBuf();
 769         memset(&Room, 0, sizeof(folder));
 770         if (goto_config_room(Buf, &Room) != 0) {
 771                 syslog(9, "display_reg() exiting because goto_config_room() failed\n");
 772                 if (during_login) {
 773                         do_welcome();
 774                 }
 775                 else {
 776                         display_main_menu();
 777                 }
 778                 FreeStrBuf(&Buf);
 779                 FlushFolder(&Room);
 780                 return;
 781         }
 782         FlushFolder(&Room);
 783
 784         FreeStrBuf(&Buf);
 785         vcard_msgnum = locate_user_vcard_in_this_room(&VCMsg, &VCAtt);
 786         if (vcard_msgnum < 0L) {
 787                 syslog(9, "display_reg() exiting because locate_user_vcard_in_this_room() failed\n");
 788                 if (during_login) {
 789                         do_welcome();
 790                 }
 791                 else {
 792                         display_main_menu();
 793                 }
 794                 return;
 795         }
 796
 797         if (during_login) {
 798                 do_edit_vcard(vcard_msgnum, "1", VCMsg, VCAtt, "do_welcome", USERCONFIGROOM);
 799         }
 800         else {
 801                 StrBuf *ReturnTo;
 802                 ReturnTo = NewStrBufPlain(HKEY("display_main_menu?go="));
 803                 StrBufAppendBuf(ReturnTo, WC->CurRoom.name, 0);
 804                 do_edit_vcard(vcard_msgnum, "1", VCMsg, VCAtt, ChrPtr(ReturnTo), USERCONFIGROOM);
 805                 FreeStrBuf(&ReturnTo);
 806         }
 807
 808         /* FIXME - don't we have to free VCMsg and VCAtt ?? */
 809 }
 810
 811
 812
 813
 814 /*
 815  * display form for changing your password
 816  */
 817 void display_changepw(void)
 818 {
 819         WCTemplputParams SubTP;
 820         char buf[SIZ];
 821         StrBuf *Buf;
 822         output_headers(1, 1, 1, 0, 0, 0);
 823
 824         Buf = NewStrBufPlain(_("Change your password"), -1);
 825         memset(&SubTP, 0, sizeof(WCTemplputParams));
 826         SubTP.Filter.ContextType = CTX_STRBUF;
 827         SubTP.Context = Buf;
 828         DoTemplate(HKEY("beginbox"), NULL, &SubTP);
 829
 830         FreeStrBuf(&Buf);
 831
 832         if (!IsEmptyStr(WC->ImportantMessage)) {
 833                 wc_printf("<span class=\"errormsg\">"
 834                         "%s</span><br>\n", WC->ImportantMessage);
 835                 safestrncpy(WC->ImportantMessage, "", sizeof WC->ImportantMessage);
 836         }
 837
 838         serv_puts("MESG changepw");
 839         serv_getln(buf, sizeof buf);
 840         if (buf[0] == '1') {
 841                 fmout("CENTER");
 842         }
 843
 844         wc_printf("<form name=\"changepwform\" action=\"changepw\" method=\"post\">\n");
 845         wc_printf("<input type=\"hidden\" name=\"nonce\" value=\"%d\">\n", WC->nonce);
 846         wc_printf("<table class=\"altern\" ");
 847         wc_printf("<tr class=\"even\"><td>");
 848         wc_printf(_("Enter new password:"));
 849         wc_printf("</td><td>");
 850         wc_printf("<input type=\"password\" name=\"newpass1\" value=\"\" maxlength=\"20\"></td></tr>\n");
 851         wc_printf("<tr class=\"odd\"><td>");
 852         wc_printf(_("Enter it again to confirm:"));
 853         wc_printf("</td><td>");
 854         wc_printf("<input type=\"password\" name=\"newpass2\" value=\"\" maxlength=\"20\"></td></tr>\n");
 855         wc_printf("</table>\n");
 856
 857         wc_printf("<div class=\"buttons\">\n");
 858         wc_printf("<input type=\"submit\" name=\"change_action\" value=\"%s\">", _("Change password"));
 859         wc_printf("&nbsp;");
 860         wc_printf("<input type=\"submit\" name=\"cancel_action\" value=\"%s\">\n", _("Cancel"));
 861         wc_printf("</div>\n");
 862         wc_printf("</form>\n");
 863
 864         do_template("endbox", NULL);
 865         wDumpContent(1);
 866 }
 867
 868 /*
 869  * change password
 870  * if passwords match, propagate it to citserver.
 871  */
 872 void changepw(void)
 873 {
 874         char buf[SIZ];
 875         char newpass1[32], newpass2[32];
 876
 877         if (!havebstr("change_action")) {
 878                 safestrncpy(WC->ImportantMessage,
 879                         _("Cancelled.  Password was not changed."),
 880                         sizeof WC->ImportantMessage);
 881                 display_main_menu();
 882                 return;
 883         }
 884
 885         safestrncpy(newpass1, bstr("newpass1"), sizeof newpass1);
 886         safestrncpy(newpass2, bstr("newpass2"), sizeof newpass2);
 887
 888         if (strcasecmp(newpass1, newpass2)) {
 889                 safestrncpy(WC->ImportantMessage,
 890                         _("They don't match.  Password was not changed."),
 891                         sizeof WC->ImportantMessage);
 892                 display_changepw();
 893                 return;
 894         }
 895
 896         if (IsEmptyStr(newpass1)) {
 897                 safestrncpy(WC->ImportantMessage,
 898                         _("Blank passwords are not allowed."),
 899                         sizeof WC->ImportantMessage);
 900                 display_changepw();
 901                 return;
 902         }
 903
 904         serv_printf("SETP %s", newpass1);
 905         serv_getln(buf, sizeof buf);
 906         sprintf(WC->ImportantMessage, "%s", &buf[4]);
 907         if (buf[0] == '2') {
 908                 if (WC->wc_password == NULL)
 909                         WC->wc_password = NewStrBufPlain(buf, -1);
 910                 else {
 911                         FlushStrBuf(WC->wc_password);
 912                         StrBufAppendBufPlain(WC->wc_password,  buf, -1, 0);
 913                 }
 914                 display_main_menu();
 915         }
 916         else {
 917                 display_changepw();
 918         }
 919 }
 920
 921 int ConditionalHaveAccessCreateRoom(StrBuf *Target, WCTemplputParams *TP)
 922 {
 923         StrBuf *Buf;
 924
 925         Buf = NewStrBuf();
 926         serv_puts("CRE8 0");
 927         StrBuf_ServGetln(Buf);
 928
 929         if (GetServerStatus(Buf, NULL) == 2) {
 930                 StrBufCutLeft(Buf, 4);
 931                 AppendImportantMessage(SKEY(Buf));
 932                 FreeStrBuf(&Buf);
 933                 return 0;
 934         }
 935         FreeStrBuf(&Buf);
 936         return 1;
 937 }
 938
 939 int ConditionalAide(StrBuf *Target, WCTemplputParams *TP)
 940 {
 941         wcsession *WCC = WC;
 942         return (WCC != NULL)? (WC->is_aide == 0) : 0;
 943 }
 944
 945 int ConditionalIsLoggedIn(StrBuf *Target, WCTemplputParams *TP)
 946 {
 947         wcsession *WCC = WC;
 948         return (WCC != NULL)? (WCC->logged_in == 0) : 0;
 949
 950 }
 951
 952
 953
 954 void _display_reg(void) {
 955         display_reg(0);
 956 }
 957
 958
 959 void Header_HandleAuth(StrBuf *Line, ParsedHttpHdrs *hdr)
 960 {
 961         if (hdr->HR.got_auth == NO_AUTH) /* don't override cookie auth... */
 962         {
 963                 if (strncasecmp(ChrPtr(Line), "Basic", 5) == 0) {
 964                         StrBufCutLeft(Line, 6);
 965                         StrBufDecodeBase64(Line);
 966                         hdr->HR.plainauth = Line;
 967                         hdr->HR.got_auth = AUTH_BASIC;
 968                 }
 969                 else
 970                         syslog(1, "Authentication scheme not supported! [%s]\n", ChrPtr(Line));
 971         }
 972 }
 973
 974 void CheckAuthBasic(ParsedHttpHdrs *hdr)
 975 {
 976 /*
 977   todo: enable this if we can have other sessions than authenticated ones.
 978         if (hdr->DontNeedAuth)
 979                 return;
 980 */
 981         StrBufAppendBufPlain(hdr->HR.plainauth, HKEY(":"), 0);
 982         StrBufAppendBuf(hdr->HR.plainauth, hdr->HR.user_agent, 0);
 983         hdr->HR.SessionKey = hashlittle(SKEY(hdr->HR.plainauth), 89479832);
 984 /*
 985         syslog(1, "CheckAuthBasic: calculated sessionkey %ld\n",
 986                 hdr->HR.SessionKey);
 987 */
 988 }
 989
 990 void GetAuthBasic(ParsedHttpHdrs *hdr)
 991 {
 992         const char *Pos = NULL;
 993         if (hdr->c_username == NULL)
 994                 hdr->c_username = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_USER));
 995         if (hdr->c_password == NULL)
 996                 hdr->c_password = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_PASS));
 997         StrBufExtract_NextToken(hdr->c_username, hdr->HR.plainauth, &Pos, ':');
 998         StrBufExtract_NextToken(hdr->c_password, hdr->HR.plainauth, &Pos, ':');
 999 }
1000
1001 void Header_HandleCookie(StrBuf *Line, ParsedHttpHdrs *hdr)
1002 {
1003         const char *pch;
1004 /*
1005   todo: enable this if we can have other sessions than authenticated ones.
1006         if (hdr->DontNeedAuth)
1007                 return;
1008 */
1009         pch = strstr(ChrPtr(Line), "webcit=");
1010         if (pch == NULL) {
1011                 return;
1012         }
1013
1014         hdr->HR.RawCookie = Line;
1015         StrBufCutLeft(hdr->HR.RawCookie, (pch - ChrPtr(hdr->HR.RawCookie)) + 7);
1016         StrBufDecodeHex(hdr->HR.RawCookie);
1017
1018         cookie_to_stuff(Line, &hdr->HR.desired_session,
1019                         hdr->c_username,
1020                         hdr->c_password,
1021                         hdr->c_roomname,
1022                         hdr->c_language
1023         );
1024         hdr->HR.got_auth = AUTH_COOKIE;
1025 }
1026
1027 void
1028 HttpNewModule_AUTH
1029 (ParsedHttpHdrs *httpreq)
1030 {
1031         httpreq->c_username = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_USER));
1032         httpreq->c_password = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_PASS));
1033         httpreq->c_roomname = NewStrBuf();
1034         httpreq->c_language = NewStrBuf();
1035 }
1036 void
1037 HttpDetachModule_AUTH
1038 (ParsedHttpHdrs *httpreq)
1039 {
1040         FLUSHStrBuf(httpreq->c_username);
1041         FLUSHStrBuf(httpreq->c_password);
1042         FLUSHStrBuf(httpreq->c_roomname);
1043         FLUSHStrBuf(httpreq->c_language);
1044 }
1045
1046 void
1047 HttpDestroyModule_AUTH
1048 (ParsedHttpHdrs *httpreq)
1049 {
1050         FreeStrBuf(&httpreq->c_username);
1051         FreeStrBuf(&httpreq->c_password);
1052         FreeStrBuf(&httpreq->c_roomname);
1053         FreeStrBuf(&httpreq->c_language);
1054 }
1055
1056 void
1057 InitModule_AUTH
1058 (void)
1059 {
1060         initialize_axdefs();
1061         RegisterHeaderHandler(HKEY("COOKIE"), Header_HandleCookie);
1062         RegisterHeaderHandler(HKEY("AUTHORIZATION"), Header_HandleAuth);
1063
1064         /* no url pattern at all? Show login. */
1065         WebcitAddUrlHandler(HKEY(""), "", 0, do_welcome, ANONYMOUS|COOKIEUNNEEDED);
1066
1067         /* some of these will be removed soon */
1068         WebcitAddUrlHandler(HKEY("do_welcome"), "", 0, do_welcome, ANONYMOUS|COOKIEUNNEEDED);
1069         WebcitAddUrlHandler(HKEY("login"), "", 0, do_login, ANONYMOUS|COOKIEUNNEEDED);
1070         WebcitAddUrlHandler(HKEY("openid_login"), "", 0, do_openid_login, ANONYMOUS);
1071         WebcitAddUrlHandler(HKEY("finalize_openid_login"), "", 0, finalize_openid_login, ANONYMOUS);
1072         WebcitAddUrlHandler(HKEY("openid_manual_create"), "", 0, openid_manual_create, ANONYMOUS);
1073         WebcitAddUrlHandler(HKEY("validate"), "", 0, validate, 0);
1074         WebcitAddUrlHandler(HKEY("do_welcome"), "", 0, do_welcome, 0);
1075         WebcitAddUrlHandler(HKEY("display_reg"), "", 0, _display_reg, 0);
1076         WebcitAddUrlHandler(HKEY("display_changepw"), "", 0, display_changepw, 0);
1077         WebcitAddUrlHandler(HKEY("changepw"), "", 0, changepw, 0);
1078         WebcitAddUrlHandler(HKEY("termquit"), "", 0, do_logout, 0);
1079         WebcitAddUrlHandler(HKEY("do_logout"), "", 0, do_logout, ANONYMOUS|COOKIEUNNEEDED|FORCE_SESSIONCLOSE);
1080         WebcitAddUrlHandler(HKEY("ajax_login_username_password"), "", 0,
1081                 ajax_login_username_password, AJAX|ANONYMOUS);
1082
1083         RegisterConditional(HKEY("COND:AIDE"), 2, ConditionalAide, CTX_NONE);
1084         RegisterConditional(HKEY("COND:LOGGEDIN"), 2, ConditionalIsLoggedIn, CTX_NONE);
1085         RegisterConditional(HKEY("COND:MAY_CREATE_ROOM"), 2,  ConditionalHaveAccessCreateRoom, CTX_NONE);
1086         return;
1087 }
1088
1089
1090 void
1091 SessionDestroyModule_AUTH
1092 (wcsession *sess)
1093 {
1094         FreeStrBuf(&sess->wc_username);
1095         FreeStrBuf(&sess->wc_fullname);
1096         FreeStrBuf(&sess->wc_password);
1097         FreeStrBuf(&sess->httpauth_pass);
1098         FreeStrBuf(&sess->cs_inet_email);
1099 }