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 #ifdef __OLD__LOGIN__SCREEN__
 144 /*
 145  * Perform authentication using a user name and password
 146  */
 147 void do_login(void)
 148 {
 149         wcsession *WCC = WC;
 150         StrBuf *Buf;
 151         long ret, rc;
 152
 153         if (havebstr("language")) {
 154                 set_selected_language(bstr("language"));
 155                 go_selected_language();
 156         }
 157
 158         if (havebstr("exit_action")) {
 159                 do_logout();
 160                 return;
 161         }
 162         Buf = NewStrBuf();
 163         if (havebstr("login_action")) {
 164                 serv_printf("USER %s", bstr("name"));
 165                 StrBuf_ServGetln(Buf);
 166                 rc = GetServerStatus(Buf, &ret);
 167                 StrBufCutLeft(Buf, 4);
 168                 switch (rc) {
 169                 case 3:
 170                         serv_printf("PASS %s", bstr("pass"));
 171                         StrBuf_ServGetln(Buf);
 172                         if (GetServerStatus(Buf, NULL) == 2) {
 173                                 become_logged_in(sbstr("name"), sbstr("pass"), Buf);
 174                         } else {
 175                                 StrBufCutLeft(Buf, 4);
 176                                 AppendImportantMessage(SKEY(Buf));
 177                                 display_login();
 178                                 FreeStrBuf(&Buf);
 179                                 return;
 180                         }
 181                         break;
 182                 case 5:
 183                         if (ret == 541)
 184                         {
 185                                 AppendImportantMessage(SKEY(Buf));
 186                                 display_main_menu();
 187                                 return;
 188                         }
 189                 default:
 190                         AppendImportantMessage(SKEY(Buf));
 191                         display_login();
 192                         FreeStrBuf(&Buf);
 193                         return;
 194                 }
 195         }
 196         if (havebstr("newuser_action")) {
 197                 if (!havebstr("pass")) {
 198                         AppendImportantMessage(_("Blank passwords are not allowed."), -1);
 199                         display_login();
 200                         FreeStrBuf(&Buf);
 201                         return;
 202                 }
 203                 serv_printf("NEWU %s", bstr("name"));
 204                 StrBuf_ServGetln(Buf);
 205                 if (GetServerStatus(Buf, NULL) == 2) {
 206                         become_logged_in(sbstr("name"), sbstr("pass"), Buf);
 207                         serv_printf("SETP %s", bstr("pass"));
 208                         StrBuf_ServGetln(Buf); /* Don't care? */
 209                 } else {
 210                         StrBufCutLeft(Buf, 4);
 211                         AppendImportantMessage(SKEY(Buf));
 212                         display_login();
 213                         FreeStrBuf(&Buf);
 214                         return;
 215                 }
 216         }
 217         if (WCC->logged_in) {
 218                 if (WCC->need_regi) {
 219                         display_reg(1);
 220                 } else if (WCC->need_vali) {
 221                         validate();
 222                 } else {
 223                         do_welcome();
 224                 }
 225         } else {
 226                 AppendImportantMessage(_("Your password was not accepted."), -1);
 227                 display_login();
 228         }
 229         FreeStrBuf(&Buf);
 230 }
 231 #endif
 232
 233
 234 /*
 235  * modal/ajax version of 'login' (username and password)
 236  */
 237 void ajax_login_username_password(void) {
 238         StrBuf *Buf = NewStrBuf();
 239
 240         serv_printf("USER %s", bstr("name"));
 241         StrBuf_ServGetln(Buf);
 242         if (GetServerStatus(Buf, NULL) == 3) {
 243                 serv_printf("PASS %s", bstr("pass"));
 244                 StrBuf_ServGetln(Buf);
 245                 if (GetServerStatus(Buf, NULL) == 2) {
 246                         become_logged_in(sbstr("name"), sbstr("pass"), Buf);
 247                 }
 248         }
 249
 250         /* The client is expecting to read back a citadel protocol response */
 251         wc_printf("%s", ChrPtr(Buf));
 252         FreeStrBuf(&Buf);
 253 }
 254
 255
 256
 257 /*
 258  * Try to create an account manually after an OpenID was verified
 259  */
 260 void openid_manual_create(void)
 261 {
 262         StrBuf *Buf;
 263
 264         if (havebstr("exit_action")) {
 265                 do_logout();
 266                 return;
 267         }
 268
 269         if (havebstr("newuser_action")) {
 270                 Buf = NewStrBuf();
 271                 serv_printf("OIDC %s", bstr("name"));
 272                 StrBuf_ServGetln(Buf);
 273                 if (GetServerStatus(Buf, NULL) == 2) {
 274                         StrBuf *gpass;
 275
 276                         gpass = NewStrBuf();
 277                         serv_puts("SETP GENERATE_RANDOM_PASSWORD");
 278                         StrBuf_ServGetln(gpass);
 279                         StrBufCutLeft(gpass, 4);
 280                         become_logged_in(sbstr("name"), gpass, Buf);
 281                         FreeStrBuf(&gpass);
 282                 }
 283                 FreeStrBuf(&Buf);
 284         }
 285
 286         if (WC->logged_in) {
 287                 if (WC->need_regi) {
 288                         display_reg(1);
 289                 } else if (WC->need_vali) {
 290                         validate();
 291                 } else {
 292                         do_welcome();
 293                 }
 294         } else {
 295                 const StrBuf *Buf;
 296
 297                 putbstr("__claimed_id", NewStrBufDup(sbstr("openid_url")));
 298                 Buf = sbstr("name");
 299                 if (StrLength(Buf) > 0)
 300                         putbstr("__username", NewStrBufDup(Buf));
 301                 begin_burst();
 302                 do_template("openid_manual_create", NULL);
 303                 end_burst();
 304         }
 305
 306 }
 307
 308
 309 /*
 310  * Perform authentication using OpenID
 311  * assemble the checkid_setup request and then redirect to the user's identity provider
 312  */
 313 void do_openid_login(void)
 314 {
 315         char buf[4096];
 316
 317         snprintf(buf, sizeof buf,
 318                 "OIDS %s|%s/finalize_openid_login|%s",
 319                 bstr("openid_url"),
 320                 ChrPtr(site_prefix),
 321                 ChrPtr(site_prefix)
 322         );
 323
 324         serv_puts(buf);
 325         serv_getln(buf, sizeof buf);
 326         if (buf[0] == '2') {
 327                 syslog(LOG_DEBUG, "OpenID server contacted; redirecting to %s\n", &buf[4]);
 328                 http_redirect(&buf[4]);
 329                 return;
 330         }
 331
 332         begin_burst();
 333         output_headers(1, 0, 0, 0, 1, 0);
 334         wc_printf("<html><body>");
 335         escputs(&buf[4]);
 336         wc_printf("</body></html>");
 337         end_burst();
 338 }
 339
 340
 341 /*
 342  * Complete the authentication using OpenID
 343  * This function handles the positive or negative assertion from the user's Identity Provider
 344  */
 345 void finalize_openid_login(void)
 346 {
 347         StrBuf *Buf;
 348         wcsession *WCC = WC;
 349         int already_logged_in = (WCC->logged_in) ;
 350         int linecount = 0;
 351         StrBuf *result = NULL;
 352         StrBuf *username = NULL;
 353         StrBuf *password = NULL;
 354         StrBuf *logged_in_response = NULL;
 355         StrBuf *claimed_id = NULL;
 356
 357         if (havebstr("openid.mode")) {
 358                 if (!strcasecmp(bstr("openid.mode"), "id_res")) {
 359                         Buf = NewStrBuf();
 360                         serv_puts("OIDF");
 361                         StrBuf_ServGetln(Buf);
 362                         if (GetServerStatus(Buf, NULL) == 8) {
 363                                 urlcontent *u;
 364                                 void *U;
 365                                 long HKLen;
 366                                 const char *HKey;
 367                                 HashPos *Cursor;
 368
 369                                 Cursor = GetNewHashPos (WCC->Hdr->urlstrings, 0);
 370                                 while (GetNextHashPos(WCC->Hdr->urlstrings, Cursor, &HKLen, &HKey, &U)) {
 371                                         u = (urlcontent*) U;
 372                                         if (!strncasecmp(u->url_key, "openid.", 7)) {
 373                                                 serv_printf("%s|%s", &u->url_key[7], ChrPtr(u->url_data));
 374                                         }
 375                                 }
 376
 377                                 serv_puts("000");
 378
 379                                 linecount = 0;
 380                                 while (StrBuf_ServGetln(Buf), strcmp(ChrPtr(Buf), "000"))
 381                                 {
 382                                         if (linecount == 0) result = NewStrBufDup(Buf);
 383                                         if (!strcasecmp(ChrPtr(result), "authenticate")) {
 384                                                 if (linecount == 1) {
 385                                                         username = NewStrBufDup(Buf);
 386                                                 }
 387                                                 else if (linecount == 2) {
 388                                                         password = NewStrBufDup(Buf);
 389                                                 }
 390                                                 else if (linecount == 3) {
 391                                                         logged_in_response = NewStrBufDup(Buf);
 392                                                 }
 393                                         }
 394                                         else if (!strcasecmp(ChrPtr(result), "verify_only")) {
 395                                                 if (linecount == 1) {
 396                                                         claimed_id = NewStrBufDup(Buf);
 397                                                 }
 398                                                 if (linecount == 2) {
 399                                                         username = NewStrBufDup(Buf);
 400                                                 }
 401                                         }
 402                                         ++linecount;
 403                                 }
 404                         }
 405                         FreeStrBuf(&Buf);
 406                 }
 407         }
 408
 409         /* If we were already logged in, this was an attempt to associate an OpenID account
 410         FIXME put this back in
 411         if (already_logged_in) {
 412                 display_openids();
 413                 FreeStrBuf(&result);
 414                 FreeStrBuf(&username);
 415                 FreeStrBuf(&password);
 416                 FreeStrBuf(&claimed_id);
 417                 FreeStrBuf(&logged_in_response);
 418                 return;
 419         }
 420         */
 421
 422         /* If this operation logged us in, either by connecting with an existing account or by
 423          * auto-creating one using Simple Registration Extension, we're already on our way.
 424          */
 425         if (!strcasecmp(ChrPtr(result), "authenticate")) {
 426                 become_logged_in(username, password, logged_in_response);
 427         }
 428
 429         /* The specified OpenID was verified but the desired user name was either not specified via SRI
 430          * or conflicts with an existing user.  Either way the user will need to specify a new name.
 431          */
 432
 433 /*
 434         else if (!strcasecmp(ChrPtr(result), "verify_only")) {
 435                 putbstr("__claimed_id", claimed_id);
 436                 claimed_id = NULL;
 437                 if (StrLength(username) > 0) {
 438                         putbstr("__username", username);
 439                         username = NULL;
 440                 }
 441                 begin_burst();
 442                 do_template("openid_manual_create", NULL);
 443                 end_burst();
 444         }
 445 */
 446
 447
 448
 449         /* Did we manage to log in?  If so, continue with the normal flow... */
 450         if (WC->logged_in) {
 451                 begin_burst();
 452                 output_headers(1, 0, 0, 0, 1, 0);
 453                 do_template("authpopup_finished", NULL);
 454                 end_burst();
 455
 456                 /* FIXME make all this crap work again
 457                 if (WC->need_regi) {
 458                         display_reg(1);
 459                 } else {
 460                         do_welcome();
 461                 }
 462                 */
 463
 464         } else {
 465                 /* FIXME do something prettier here? */
 466                 begin_burst();
 467                 output_headers(1, 0, 0, 0, 1, 0);
 468                 wc_printf("<html><body>");
 469                 wc_printf("error");
 470                 wc_printf("</body></html>");
 471                 end_burst();
 472         }
 473
 474         FreeStrBuf(&result);
 475         FreeStrBuf(&username);
 476         FreeStrBuf(&password);
 477         FreeStrBuf(&claimed_id);
 478         FreeStrBuf(&logged_in_response);
 479 }
 480
 481
 482 /*
 483  * Display a welcome screen to the user.
 484  *
 485  * If this is the first time login, and the web based setup is enabled,
 486  * lead the user through the setup routines
 487  */
 488 void do_welcome(void)
 489 {
 490         StrBuf *Buf;
 491 #ifdef XXX_NOT_FINISHED_YET_XXX
 492         FILE *fp;
 493         int i;
 494
 495         /**
 496          * See if we have to run the first-time setup wizard
 497          */
 498         if (WC->is_aide) {
 499                 if (!setup_wizard) {
 500                         int len;
 501                         sprintf(wizard_filename, "setupwiz.%s.%s",
 502                                 ctdlhost, ctdlport);
 503                         len = strlen(wizard_filename);
 504                         for (i=0; i<len; ++i) {
 505                                 if (    (wizard_filename[i]==' ')
 506                                         || (wizard_filename[i] == '/')
 507                                 ) {
 508                                         wizard_filename[i] = '_';
 509                                 }
 510                         }
 511
 512                         fp = fopen(wizard_filename, "r");
 513                         if (fp != NULL) {
 514                                 fgets(buf, sizeof buf, fp);
 515                                 buf[strlen(buf)-1] = 0;
 516                                 fclose(fp);
 517                                 if (atoi(buf) == serv_info.serv_rev_level) {
 518                                         setup_wizard = 1; /**< already run */
 519                                 }
 520                         }
 521                 }
 522
 523                 if (!setup_wizard) {
 524                         http_redirect("setup_wizard");
 525                 }
 526         }
 527 #endif
 528
 529         /*
 530          * Go to the user's preferred start page
 531          */
 532         if (!get_preference("startpage", &Buf)) {
 533                 Buf = NewStrBuf ();
 534                 StrBufPrintf(Buf, "dotskip?room=_BASEROOM_");
 535                 set_preference("startpage", Buf, 1);
 536         }
 537         if (ChrPtr(Buf)[0] == '/') {
 538                 StrBufCutLeft(Buf, 1);
 539         }
 540         if (StrLength(Buf) == 0) {
 541                 StrBufAppendBufPlain(Buf, "dotgoto?room=_BASEROOM_", -1, 0);
 542         }
 543         syslog(9, "Redirecting to user's start page: %s\n", ChrPtr(Buf));
 544         http_redirect(ChrPtr(Buf));
 545 }
 546
 547
 548 /*
 549  * Disconnect from the Citadel server, and end this WebCit session
 550  */
 551 void end_webcit_session(void) {
 552
 553         serv_puts("QUIT");
 554         WC->killthis = 1;
 555         /* close() of citadel socket will be done by do_housekeeping() */
 556 }
 557
 558 /*
 559  * execute the logout
 560  */
 561 void do_logout(void)
 562 {
 563         wcsession *WCC = WC;
 564         char buf[SIZ];
 565
 566         FlushStrBuf(WCC->wc_username);
 567         FlushStrBuf(WCC->wc_password);
 568         FlushStrBuf(WCC->wc_fullname);
 569
 570         serv_puts("LOUT");
 571         serv_getln(buf, sizeof buf);
 572         WCC->logged_in = 0;
 573
 574         if (WC->serv_info->serv_supports_guest) {
 575                 display_default_landing_page();
 576                 return;
 577         }
 578
 579         FlushStrBuf(WCC->CurRoom.name);
 580
 581         /* Calling output_headers() this way causes the cookies to be un-set */
 582         output_headers(1, 1, 0, 1, 0, 0);
 583
 584         wc_printf("<div id=\"logout_screen\">");
 585         wc_printf("<div class=\"box\">");
 586         wc_printf("<div class=\"boxlabel\">");
 587         wc_printf(_("Log off"));
 588         wc_printf("</div><div class=\"boxcontent\">");
 589         serv_puts("MESG goodbye");
 590         serv_getln(buf, sizeof buf);
 591
 592         if (WCC->serv_sock >= 0) {
 593                 if (buf[0] == '1') {
 594                         fmout("'CENTER'");
 595                 } else {
 596                         wc_printf("Goodbye\n");
 597                 }
 598         }
 599         else {
 600                 wc_printf(_("This program was unable to connect or stay "
 601                         "connected to the Citadel server.  Please report "
 602                         "this problem to your system administrator.")
 603                 );
 604                 wc_printf("<a href=\"http://www.citadel.org/doku.php/"
 605                         "faq:mastering_your_os:net#netstat\">%s</a>",
 606                         _("Read More..."));
 607         }
 608
 609         wc_printf("<hr /><div class=\"buttons\"> "
 610                 "<span class=\"button_link\"><a href=\".\">");
 611         wc_printf(_("Log in again"));
 612         wc_printf("</a></span>");
 613         wc_printf("</div></div></div>\n");
 614         wDumpContent(2);
 615         end_webcit_session();
 616 }
 617
 618
 619 /*
 620  * validate new users
 621  */
 622 void validate(void)
 623 {
 624         char cmd[SIZ];
 625         char user[SIZ];
 626         char buf[SIZ];
 627         int a;
 628
 629         output_headers(1, 1, 2, 0, 0, 0);
 630         wc_printf("<div id=\"banner\">\n");
 631         wc_printf("<h1>");
 632         wc_printf(_("Validate new users"));
 633         wc_printf("</h1>");
 634         wc_printf("</div>\n");
 635
 636         wc_printf("<div id=\"content\" class=\"service\">\n");
 637
 638         /* If the user just submitted a validation, process it... */
 639         safestrncpy(buf, bstr("user"), sizeof buf);
 640         if (!IsEmptyStr(buf)) {
 641                 if (havebstr("axlevel")) {
 642                         serv_printf("VALI %s|%s", buf, bstr("axlevel"));
 643                         serv_getln(buf, sizeof buf);
 644                         if (buf[0] != '2') {
 645                                 wc_printf("<b>%s</b><br>\n", &buf[4]);
 646                         }
 647                 }
 648         }
 649
 650         /* Now see if any more users require validation. */
 651         serv_puts("GNUR");
 652         serv_getln(buf, sizeof buf);
 653         if (buf[0] == '2') {
 654                 wc_printf("<b>");
 655                 wc_printf(_("No users require validation at this time."));
 656                 wc_printf("</b><br>\n");
 657                 wDumpContent(1);
 658                 return;
 659         }
 660         if (buf[0] != '3') {
 661                 wc_printf("<b>%s</b><br>\n", &buf[4]);
 662                 wDumpContent(1);
 663                 return;
 664         }
 665
 666         wc_printf("<table class=\"auth_validate\"><tr><td>\n");
 667         wc_printf("<div id=\"validate\">");
 668
 669         safestrncpy(user, &buf[4], sizeof user);
 670         serv_printf("GREG %s", user);
 671         serv_getln(cmd, sizeof cmd);
 672         if (cmd[0] == '1') {
 673                 a = 0;
 674                 do {
 675                         serv_getln(buf, sizeof buf);
 676                         ++a;
 677                         if (a == 1)
 678                                 wc_printf("#%s<br><H1>%s</H1>",
 679                                         buf, &cmd[4]);
 680                         if (a == 2) {
 681                                 char *pch;
 682                                 int haveChar = 0;
 683                                 int haveNum = 0;
 684                                 int haveOther = 0;
 685                                 int count = 0;
 686                                 pch = buf;
 687                                 while (!IsEmptyStr(pch))
 688                                 {
 689                                         if (isdigit(*pch))
 690                                                 haveNum = 1;
 691                                         else if (isalpha(*pch))
 692                                                 haveChar = 1;
 693                                         else
 694                                                 haveOther = 1;
 695                                         pch ++;
 696                                 }
 697                                 count = pch - buf;
 698                                 if (count > 7)
 699                                         count = 0;
 700                                 switch (count){
 701                                 case 0:
 702                                         pch = _("very weak");
 703                                         break;
 704                                 case 1:
 705                                         pch = _("weak");
 706                                         break;
 707                                 case 2:
 708                                         pch = _("ok");
 709                                         break;
 710                                 case 3:
 711                                 default:
 712                                         pch = _("strong");
 713                                 }
 714
 715                                 wc_printf("PW: %s<br>\n", pch);
 716                         }
 717                         if (a == 3)
 718                                 wc_printf("%s<br>\n", buf);
 719                         if (a == 4)
 720                                 wc_printf("%s<br>\n", buf);
 721                         if (a == 5)
 722                                 wc_printf("%s, ", buf);
 723                         if (a == 6)
 724                                 wc_printf("%s ", buf);
 725                         if (a == 7)
 726                                 wc_printf("%s<br>\n", buf);
 727                         if (a == 8)
 728                                 wc_printf("%s<br>\n", buf);
 729                         if (a == 9)
 730                                 wc_printf(_("Current access level: %d (%s)\n"),
 731                                         atoi(buf), axdefs[atoi(buf)]);
 732                 } while (strcmp(buf, "000"));
 733         } else {
 734                 wc_printf("<H1>%s</H1>%s<br>\n", user, &cmd[4]);
 735         }
 736
 737         wc_printf("<hr />");
 738         wc_printf(_("Select access level for this user:"));
 739         wc_printf("<br>\n");
 740         for (a = 0; a <= 6; ++a) {
 741                 wc_printf("<a href=\"validate?nonce=%d?user=", WC->nonce);
 742                 urlescputs(user);
 743                 wc_printf("&axlevel=%d\">%s</A>&nbsp;&nbsp;&nbsp;\n",
 744                         a, axdefs[a]);
 745         }
 746         wc_printf("<br>\n");
 747
 748         wc_printf("</div>\n");
 749         wc_printf("</td></tr></table>\n");
 750         wDumpContent(1);
 751 }
 752
 753
 754
 755 /*
 756  * Display form for registration.
 757  *
 758  * (Set during_login to 1 if this registration is being performed during
 759  * new user login and will require chaining to the proper screen.)
 760  */
 761 void display_reg(int during_login)
 762 {
 763         folder Room;
 764         StrBuf *Buf;
 765         message_summary *VCMsg = NULL;
 766         wc_mime_attachment *VCAtt = NULL;
 767         long vcard_msgnum;
 768
 769         Buf = NewStrBuf();
 770         memset(&Room, 0, sizeof(folder));
 771         if (goto_config_room(Buf, &Room) != 0) {
 772                 syslog(9, "display_reg() exiting because goto_config_room() failed\n");
 773                 if (during_login) {
 774                         do_welcome();
 775                 }
 776                 else {
 777                         display_main_menu();
 778                 }
 779                 FreeStrBuf(&Buf);
 780                 FlushFolder(&Room);
 781                 return;
 782         }
 783         FlushFolder(&Room);
 784
 785         FreeStrBuf(&Buf);
 786         vcard_msgnum = locate_user_vcard_in_this_room(&VCMsg, &VCAtt);
 787         if (vcard_msgnum < 0L) {
 788                 syslog(9, "display_reg() exiting because locate_user_vcard_in_this_room() failed\n");
 789                 if (during_login) {
 790                         do_welcome();
 791                 }
 792                 else {
 793                         display_main_menu();
 794                 }
 795                 return;
 796         }
 797
 798         if (during_login) {
 799                 do_edit_vcard(vcard_msgnum, "1", VCMsg, VCAtt, "do_welcome", USERCONFIGROOM);
 800         }
 801         else {
 802                 StrBuf *ReturnTo;
 803                 ReturnTo = NewStrBufPlain(HKEY("display_main_menu?go="));
 804                 StrBufAppendBuf(ReturnTo, WC->CurRoom.name, 0);
 805                 do_edit_vcard(vcard_msgnum, "1", VCMsg, VCAtt, ChrPtr(ReturnTo), USERCONFIGROOM);
 806                 FreeStrBuf(&ReturnTo);
 807         }
 808
 809         /* FIXME - don't we have to free VCMsg and VCAtt ?? */
 810 }
 811
 812
 813
 814
 815 /*
 816  * display form for changing your password
 817  */
 818 void display_changepw(void)
 819 {
 820         WCTemplputParams SubTP;
 821         char buf[SIZ];
 822         StrBuf *Buf;
 823         output_headers(1, 1, 1, 0, 0, 0);
 824
 825         Buf = NewStrBufPlain(_("Change your password"), -1);
 826         memset(&SubTP, 0, sizeof(WCTemplputParams));
 827         SubTP.Filter.ContextType = CTX_STRBUF;
 828         SubTP.Context = Buf;
 829         DoTemplate(HKEY("beginbox"), NULL, &SubTP);
 830
 831         FreeStrBuf(&Buf);
 832
 833         if (!IsEmptyStr(WC->ImportantMessage)) {
 834                 wc_printf("<span class=\"errormsg\">"
 835                         "%s</span><br>\n", WC->ImportantMessage);
 836                 safestrncpy(WC->ImportantMessage, "", sizeof WC->ImportantMessage);
 837         }
 838
 839         serv_puts("MESG changepw");
 840         serv_getln(buf, sizeof buf);
 841         if (buf[0] == '1') {
 842                 fmout("CENTER");
 843         }
 844
 845         wc_printf("<form name=\"changepwform\" action=\"changepw\" method=\"post\">\n");
 846         wc_printf("<input type=\"hidden\" name=\"nonce\" value=\"%d\">\n", WC->nonce);
 847         wc_printf("<table class=\"altern\" ");
 848         wc_printf("<tr class=\"even\"><td>");
 849         wc_printf(_("Enter new password:"));
 850         wc_printf("</td><td>");
 851         wc_printf("<input type=\"password\" name=\"newpass1\" value=\"\" maxlength=\"20\"></td></tr>\n");
 852         wc_printf("<tr class=\"odd\"><td>");
 853         wc_printf(_("Enter it again to confirm:"));
 854         wc_printf("</td><td>");
 855         wc_printf("<input type=\"password\" name=\"newpass2\" value=\"\" maxlength=\"20\"></td></tr>\n");
 856         wc_printf("</table>\n");
 857
 858         wc_printf("<div class=\"buttons\">\n");
 859         wc_printf("<input type=\"submit\" name=\"change_action\" value=\"%s\">", _("Change password"));
 860         wc_printf("&nbsp;");
 861         wc_printf("<input type=\"submit\" name=\"cancel_action\" value=\"%s\">\n", _("Cancel"));
 862         wc_printf("</div>\n");
 863         wc_printf("</form>\n");
 864
 865         do_template("endbox", NULL);
 866         wDumpContent(1);
 867 }
 868
 869 /*
 870  * change password
 871  * if passwords match, propagate it to citserver.
 872  */
 873 void changepw(void)
 874 {
 875         char buf[SIZ];
 876         char newpass1[32], newpass2[32];
 877
 878         if (!havebstr("change_action")) {
 879                 safestrncpy(WC->ImportantMessage,
 880                         _("Cancelled.  Password was not changed."),
 881                         sizeof WC->ImportantMessage);
 882                 display_main_menu();
 883                 return;
 884         }
 885
 886         safestrncpy(newpass1, bstr("newpass1"), sizeof newpass1);
 887         safestrncpy(newpass2, bstr("newpass2"), sizeof newpass2);
 888
 889         if (strcasecmp(newpass1, newpass2)) {
 890                 safestrncpy(WC->ImportantMessage,
 891                         _("They don't match.  Password was not changed."),
 892                         sizeof WC->ImportantMessage);
 893                 display_changepw();
 894                 return;
 895         }
 896
 897         if (IsEmptyStr(newpass1)) {
 898                 safestrncpy(WC->ImportantMessage,
 899                         _("Blank passwords are not allowed."),
 900                         sizeof WC->ImportantMessage);
 901                 display_changepw();
 902                 return;
 903         }
 904
 905         serv_printf("SETP %s", newpass1);
 906         serv_getln(buf, sizeof buf);
 907         sprintf(WC->ImportantMessage, "%s", &buf[4]);
 908         if (buf[0] == '2') {
 909                 if (WC->wc_password == NULL)
 910                         WC->wc_password = NewStrBufPlain(buf, -1);
 911                 else {
 912                         FlushStrBuf(WC->wc_password);
 913                         StrBufAppendBufPlain(WC->wc_password,  buf, -1, 0);
 914                 }
 915                 display_main_menu();
 916         }
 917         else {
 918                 display_changepw();
 919         }
 920 }
 921
 922 int ConditionalHaveAccessCreateRoom(StrBuf *Target, WCTemplputParams *TP)
 923 {
 924         StrBuf *Buf;
 925
 926         Buf = NewStrBuf();
 927         serv_puts("CRE8 0");
 928         StrBuf_ServGetln(Buf);
 929
 930         if (GetServerStatus(Buf, NULL) == 2) {
 931                 StrBufCutLeft(Buf, 4);
 932                 AppendImportantMessage(SKEY(Buf));
 933                 FreeStrBuf(&Buf);
 934                 return 0;
 935         }
 936         FreeStrBuf(&Buf);
 937         return 1;
 938 }
 939
 940 int ConditionalAide(StrBuf *Target, WCTemplputParams *TP)
 941 {
 942         wcsession *WCC = WC;
 943         return (WCC != NULL)? (WC->is_aide == 0) : 0;
 944 }
 945
 946 int ConditionalIsLoggedIn(StrBuf *Target, WCTemplputParams *TP)
 947 {
 948         wcsession *WCC = WC;
 949         return (WCC != NULL)? (WCC->logged_in == 0) : 0;
 950
 951 }
 952
 953
 954
 955 void _display_reg(void) {
 956         display_reg(0);
 957 }
 958
 959
 960 void Header_HandleAuth(StrBuf *Line, ParsedHttpHdrs *hdr)
 961 {
 962         if (hdr->HR.got_auth == NO_AUTH) /* don't override cookie auth... */
 963         {
 964                 if (strncasecmp(ChrPtr(Line), "Basic", 5) == 0) {
 965                         StrBufCutLeft(Line, 6);
 966                         StrBufDecodeBase64(Line);
 967                         hdr->HR.plainauth = Line;
 968                         hdr->HR.got_auth = AUTH_BASIC;
 969                 }
 970                 else
 971                         syslog(1, "Authentication scheme not supported! [%s]\n", ChrPtr(Line));
 972         }
 973 }
 974
 975 void CheckAuthBasic(ParsedHttpHdrs *hdr)
 976 {
 977 /*
 978   todo: enable this if we can have other sessions than authenticated ones.
 979         if (hdr->DontNeedAuth)
 980                 return;
 981 */
 982         StrBufAppendBufPlain(hdr->HR.plainauth, HKEY(":"), 0);
 983         StrBufAppendBuf(hdr->HR.plainauth, hdr->HR.user_agent, 0);
 984         hdr->HR.SessionKey = hashlittle(SKEY(hdr->HR.plainauth), 89479832);
 985 /*
 986         syslog(1, "CheckAuthBasic: calculated sessionkey %ld\n",
 987                 hdr->HR.SessionKey);
 988 */
 989 }
 990
 991 void GetAuthBasic(ParsedHttpHdrs *hdr)
 992 {
 993         const char *Pos = NULL;
 994         if (hdr->c_username == NULL)
 995                 hdr->c_username = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_USER));
 996         if (hdr->c_password == NULL)
 997                 hdr->c_password = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_PASS));
 998         StrBufExtract_NextToken(hdr->c_username, hdr->HR.plainauth, &Pos, ':');
 999         StrBufExtract_NextToken(hdr->c_password, hdr->HR.plainauth, &Pos, ':');
1000 }
1001
1002 void Header_HandleCookie(StrBuf *Line, ParsedHttpHdrs *hdr)
1003 {
1004         const char *pch;
1005 /*
1006   todo: enable this if we can have other sessions than authenticated ones.
1007         if (hdr->DontNeedAuth)
1008                 return;
1009 */
1010         pch = strstr(ChrPtr(Line), "webcit=");
1011         if (pch == NULL) {
1012                 return;
1013         }
1014
1015         hdr->HR.RawCookie = Line;
1016         StrBufCutLeft(hdr->HR.RawCookie, (pch - ChrPtr(hdr->HR.RawCookie)) + 7);
1017         StrBufDecodeHex(hdr->HR.RawCookie);
1018
1019         cookie_to_stuff(Line, &hdr->HR.desired_session,
1020                         hdr->c_username,
1021                         hdr->c_password,
1022                         hdr->c_roomname,
1023                         hdr->c_language
1024         );
1025         hdr->HR.got_auth = AUTH_COOKIE;
1026 }
1027
1028 void
1029 HttpNewModule_AUTH
1030 (ParsedHttpHdrs *httpreq)
1031 {
1032         httpreq->c_username = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_USER));
1033         httpreq->c_password = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_PASS));
1034         httpreq->c_roomname = NewStrBuf();
1035         httpreq->c_language = NewStrBuf();
1036 }
1037 void
1038 HttpDetachModule_AUTH
1039 (ParsedHttpHdrs *httpreq)
1040 {
1041         FLUSHStrBuf(httpreq->c_username);
1042         FLUSHStrBuf(httpreq->c_password);
1043         FLUSHStrBuf(httpreq->c_roomname);
1044         FLUSHStrBuf(httpreq->c_language);
1045 }
1046
1047 void
1048 HttpDestroyModule_AUTH
1049 (ParsedHttpHdrs *httpreq)
1050 {
1051         FreeStrBuf(&httpreq->c_username);
1052         FreeStrBuf(&httpreq->c_password);
1053         FreeStrBuf(&httpreq->c_roomname);
1054         FreeStrBuf(&httpreq->c_language);
1055 }
1056
1057 void
1058 InitModule_AUTH
1059 (void)
1060 {
1061         initialize_axdefs();
1062         RegisterHeaderHandler(HKEY("COOKIE"), Header_HandleCookie);
1063         RegisterHeaderHandler(HKEY("AUTHORIZATION"), Header_HandleAuth);
1064
1065         /* no url pattern at all? Show login. */
1066         WebcitAddUrlHandler(HKEY(""), "", 0, do_welcome, ANONYMOUS|COOKIEUNNEEDED);
1067
1068         /* some of these will be removed soon */
1069         WebcitAddUrlHandler(HKEY("do_welcome"), "", 0, do_welcome, ANONYMOUS|COOKIEUNNEEDED);
1070 #ifdef __OLD__LOGIN__SCREEN__
1071         WebcitAddUrlHandler(HKEY("login"), "", 0, do_login, ANONYMOUS|COOKIEUNNEEDED);
1072 #endif
1073         WebcitAddUrlHandler(HKEY("openid_login"), "", 0, do_openid_login, ANONYMOUS);
1074         WebcitAddUrlHandler(HKEY("finalize_openid_login"), "", 0, finalize_openid_login, ANONYMOUS);
1075         WebcitAddUrlHandler(HKEY("openid_manual_create"), "", 0, openid_manual_create, ANONYMOUS);
1076         WebcitAddUrlHandler(HKEY("validate"), "", 0, validate, 0);
1077         WebcitAddUrlHandler(HKEY("do_welcome"), "", 0, do_welcome, 0);
1078         WebcitAddUrlHandler(HKEY("display_reg"), "", 0, _display_reg, 0);
1079         WebcitAddUrlHandler(HKEY("display_changepw"), "", 0, display_changepw, 0);
1080         WebcitAddUrlHandler(HKEY("changepw"), "", 0, changepw, 0);
1081         WebcitAddUrlHandler(HKEY("termquit"), "", 0, do_logout, 0);
1082         WebcitAddUrlHandler(HKEY("do_logout"), "", 0, do_logout, ANONYMOUS|COOKIEUNNEEDED|FORCE_SESSIONCLOSE);
1083         WebcitAddUrlHandler(HKEY("ajax_login_username_password"), "", 0,
1084                 ajax_login_username_password, AJAX|ANONYMOUS);
1085
1086         RegisterConditional(HKEY("COND:AIDE"), 2, ConditionalAide, CTX_NONE);
1087         RegisterConditional(HKEY("COND:LOGGEDIN"), 2, ConditionalIsLoggedIn, CTX_NONE);
1088         RegisterConditional(HKEY("COND:MAY_CREATE_ROOM"), 2,  ConditionalHaveAccessCreateRoom, CTX_NONE);
1089         return;
1090 }
1091
1092
1093 void
1094 SessionDestroyModule_AUTH
1095 (wcsession *sess)
1096 {
1097         FreeStrBuf(&sess->wc_username);
1098         FreeStrBuf(&sess->wc_fullname);
1099         FreeStrBuf(&sess->wc_password);
1100         FreeStrBuf(&sess->httpauth_pass);
1101         FreeStrBuf(&sess->cs_inet_email);
1102 }