webcit/auth.c

   1 /*
   2  * These functions handle authentication of users to a Citadel server.
   3  *
   4  * Copyright (c) 1996-2010 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  * Display the openid-enabled login screen
  78  * mesg = the error message if last attempt failed.
  79  */
  80 void display_openid_login(char *mesg)
  81 {
  82   begin_burst();
  83   output_headers(1, 0, 0, 0, 1, 0);
  84   do_template("openid_login", NULL);
  85   end_burst();
  86 }
  87
  88
  89
  90
  91 /* Initialize the session
  92  *
  93  * This function needs to get called whenever the session changes from
  94  * not-logged-in to logged-in, either by an explicit login by the user or
  95  * by a timed-out session automatically re-establishing with a little help
  96  * from the browser cookie.  Either way, we need to load access controls and
  97  * preferences from the server.
  98  *
  99  * user                 the username
 100  * pass                 his password
 101  * serv_response        The parameters returned from a Citadel USER or NEWU command
 102  */
 103 void become_logged_in(const StrBuf *user, const StrBuf *pass, StrBuf *serv_response)
 104 {
 105         wcsession *WCC = WC;
 106         StrBuf *Buf;
 107         StrBuf *FloorDiv;
 108
 109         WCC->logged_in = 1;
 110
 111         if (WCC->wc_fullname == NULL)
 112                 WCC->wc_fullname = NewStrBufPlain(NULL, StrLength(serv_response));
 113         StrBufExtract_token(WCC->wc_fullname, serv_response, 0, '|');
 114         StrBufCutLeft(WCC->wc_fullname, 4 );
 115
 116         if (WCC->wc_username == NULL)
 117                 WCC->wc_username = NewStrBufDup(user);
 118         else {
 119                 FlushStrBuf(WCC->wc_username);
 120                 StrBufAppendBuf(WCC->wc_username, user, 0);
 121         }
 122
 123         if (WCC->wc_password == NULL)
 124                 WCC->wc_password = NewStrBufDup(pass);
 125         else {
 126                 FlushStrBuf(WCC->wc_password);
 127                 StrBufAppendBuf(WCC->wc_password, pass, 0);
 128         }
 129
 130         WCC->axlevel = StrBufExtract_int(serv_response, 1, '|');
 131         if (WCC->axlevel >= 6) { /* TODO: make this a define, else it might trick us later */
 132                 WCC->is_aide = 1;
 133         }
 134
 135         load_preferences();
 136
 137         Buf = NewStrBuf();
 138         serv_puts("CHEK");
 139         StrBuf_ServGetln(Buf);
 140         if (GetServerStatus(Buf, NULL) == 2) {
 141                 const char *pch;
 142
 143                 pch = ChrPtr(Buf) + 4;
 144                 /*WCC->new_mail  =*/ StrBufExtractNext_long(Buf, &pch, '|');
 145                 WCC->need_regi = StrBufExtractNext_long(Buf, &pch, '|');
 146                 WCC->need_vali = StrBufExtractNext_long(Buf, &pch, '|');
 147                 if (WCC->cs_inet_email == NULL)
 148                         WCC->cs_inet_email  = NewStrBuf();
 149                 StrBufExtract_NextToken(WCC->cs_inet_email, Buf, &pch, '|');
 150         }
 151         get_preference("floordiv_expanded", &FloorDiv);
 152         WCC->floordiv_expanded = FloorDiv;
 153         FreeStrBuf(&Buf);
 154 }
 155
 156
 157 /*
 158  * Perform authentication using a user name and password
 159  */
 160 void do_login(void)
 161 {
 162         wcsession *WCC = WC;
 163         StrBuf *Buf;
 164         long ret, rc;
 165
 166         if (havebstr("language")) {
 167                 set_selected_language(bstr("language"));
 168                 go_selected_language();
 169         }
 170
 171         if (havebstr("exit_action")) {
 172                 do_logout();
 173                 return;
 174         }
 175         Buf = NewStrBuf();
 176         if (havebstr("login_action")) {
 177                 serv_printf("USER %s", bstr("name"));
 178                 StrBuf_ServGetln(Buf);
 179                 rc = GetServerStatus(Buf, &ret);
 180                 StrBufCutLeft(Buf, 4);
 181                 switch (rc) {
 182                 case 3:
 183                         serv_printf("PASS %s", bstr("pass"));
 184                         StrBuf_ServGetln(Buf);
 185                         if (GetServerStatus(Buf, NULL) == 2) {
 186                                 become_logged_in(sbstr("name"), sbstr("pass"), Buf);
 187                         } else {
 188                                 StrBufCutLeft(Buf, 4);
 189                                 AppendImportantMessage(SKEY(Buf));
 190                                 display_login();
 191                                 FreeStrBuf(&Buf);
 192                                 return;
 193                         }
 194                         break;
 195                 case 5:
 196                         if (ret == 541)
 197                         {
 198                                 AppendImportantMessage(SKEY(Buf));
 199                                 display_main_menu();
 200                                 return;
 201                         }
 202                 default:
 203                         AppendImportantMessage(SKEY(Buf));
 204                         display_login();
 205                         FreeStrBuf(&Buf);
 206                         return;
 207                 }
 208         }
 209         if (havebstr("newuser_action")) {
 210                 if (!havebstr("pass")) {
 211                         AppendImportantMessage(_("Blank passwords are not allowed."), -1);
 212                         display_login();
 213                         FreeStrBuf(&Buf);
 214                         return;
 215                 }
 216                 serv_printf("NEWU %s", bstr("name"));
 217                 StrBuf_ServGetln(Buf);
 218                 if (GetServerStatus(Buf, NULL) == 2) {
 219                         become_logged_in(sbstr("name"), sbstr("pass"), Buf);
 220                         serv_printf("SETP %s", bstr("pass"));
 221                         StrBuf_ServGetln(Buf); /* Don't care? */
 222                 } else {
 223                         StrBufCutLeft(Buf, 4);
 224                         AppendImportantMessage(SKEY(Buf));
 225                         display_login();
 226                         FreeStrBuf(&Buf);
 227                         return;
 228                 }
 229         }
 230         if (WCC->logged_in) {
 231                 if (WCC->need_regi) {
 232                         display_reg(1);
 233                 } else if (WCC->need_vali) {
 234                         validate();
 235                 } else {
 236                         do_welcome();
 237                 }
 238         } else {
 239                 AppendImportantMessage(_("Your password was not accepted."), -1);
 240                 display_login();
 241         }
 242         FreeStrBuf(&Buf);
 243 }
 244
 245
 246
 247 /*
 248  * modal/ajax version of 'login' (username and password)
 249  */
 250 void ajax_login_username_password(void) {
 251         StrBuf *Buf = NewStrBuf();
 252
 253         serv_printf("USER %s", bstr("name"));
 254         StrBuf_ServGetln(Buf);
 255         if (GetServerStatus(Buf, NULL) == 3) {
 256                 serv_printf("PASS %s", bstr("pass"));
 257                 StrBuf_ServGetln(Buf);
 258                 if (GetServerStatus(Buf, NULL) == 2) {
 259                         become_logged_in(sbstr("name"), sbstr("pass"), Buf);
 260                 }
 261         }
 262
 263         /* The client is expecting to read back a citadel protocol response */
 264         wc_printf("%s", ChrPtr(Buf));
 265         FreeStrBuf(&Buf);
 266 }
 267
 268
 269
 270 /*
 271  * Try to create an account manually after an OpenID was verified
 272  */
 273 void openid_manual_create(void)
 274 {
 275         StrBuf *Buf;
 276
 277         if (havebstr("exit_action")) {
 278                 do_logout();
 279                 return;
 280         }
 281
 282         if (havebstr("newuser_action")) {
 283                 Buf = NewStrBuf();
 284                 serv_printf("OIDC %s", bstr("name"));
 285                 StrBuf_ServGetln(Buf);
 286                 if (GetServerStatus(Buf, NULL) == 2) {
 287                         StrBuf *gpass;
 288
 289                         gpass = NewStrBuf();
 290                         serv_puts("SETP GENERATE_RANDOM_PASSWORD");
 291                         StrBuf_ServGetln(gpass);
 292                         StrBufCutLeft(gpass, 4);
 293                         become_logged_in(sbstr("name"), gpass, Buf);
 294                         FreeStrBuf(&gpass);
 295                 }
 296                 FreeStrBuf(&Buf);
 297         }
 298
 299         if (WC->logged_in) {
 300                 if (WC->need_regi) {
 301                         display_reg(1);
 302                 } else if (WC->need_vali) {
 303                         validate();
 304                 } else {
 305                         do_welcome();
 306                 }
 307         } else {
 308                 const StrBuf *Buf;
 309
 310                 putbstr("__claimed_id", NewStrBufDup(sbstr("openid_url")));
 311                 Buf = sbstr("name");
 312                 if (StrLength(Buf) > 0)
 313                         putbstr("__username", NewStrBufDup(Buf));
 314                 begin_burst();
 315                 do_template("openid_manual_create", NULL);
 316                 end_burst();
 317         }
 318
 319 }
 320
 321
 322 /*
 323  * Perform authentication using OpenID
 324  * assemble the checkid_setup request and then redirect to the user's identity provider
 325  */
 326 void do_openid_login(void)
 327 {
 328         char buf[4096];
 329
 330         if (havebstr("language")) {
 331                 set_selected_language(bstr("language"));
 332                 go_selected_language();
 333         }
 334
 335         if (havebstr("exit_action")) {
 336                 do_logout();
 337                 return;
 338         }
 339         if (havebstr("login_action")) {
 340                 snprintf(buf, sizeof buf,
 341                         "OIDS %s|%s/finalize_openid_login|%s",
 342                         bstr("openid_url"),
 343                         ChrPtr(site_prefix),
 344                         ChrPtr(site_prefix)
 345                 );
 346
 347                 serv_puts(buf);
 348                 serv_getln(buf, sizeof buf);
 349                 if (buf[0] == '2') {
 350                         syslog(LOG_DEBUG, "OpenID server contacted; redirecting to %s\n", &buf[4]);
 351                         http_redirect(&buf[4]);
 352                         return;
 353                 }
 354                 else {
 355                         display_openid_login(&buf[4]);
 356                         return;
 357                 }
 358         }
 359
 360         /* If we get to this point then something failed. */
 361         display_openid_login(_("Your password was not accepted."));
 362 }
 363
 364 /*
 365  * Complete the authentication using OpenID
 366  * This function handles the positive or negative assertion from the user's Identity Provider
 367  */
 368 void finalize_openid_login(void)
 369 {
 370         StrBuf *Buf;
 371         wcsession *WCC = WC;
 372         int already_logged_in = (WCC->logged_in) ;
 373         int linecount = 0;
 374         StrBuf *result = NULL;
 375         StrBuf *username = NULL;
 376         StrBuf *password = NULL;
 377         StrBuf *logged_in_response = NULL;
 378         StrBuf *claimed_id = NULL;
 379
 380         if (havebstr("openid.mode")) {
 381                 if (!strcasecmp(bstr("openid.mode"), "id_res")) {
 382                         Buf = NewStrBuf();
 383                         serv_puts("OIDF");
 384                         StrBuf_ServGetln(Buf);
 385                         if (GetServerStatus(Buf, NULL) == 8) {
 386                                 urlcontent *u;
 387                                 void *U;
 388                                 long HKLen;
 389                                 const char *HKey;
 390                                 HashPos *Cursor;
 391
 392                                 Cursor = GetNewHashPos (WCC->Hdr->urlstrings, 0);
 393                                 while (GetNextHashPos(WCC->Hdr->urlstrings, Cursor, &HKLen, &HKey, &U)) {
 394                                         u = (urlcontent*) U;
 395                                         if (!strncasecmp(u->url_key, "openid.", 7)) {
 396                                                 serv_printf("%s|%s", &u->url_key[7], ChrPtr(u->url_data));
 397                                         }
 398                                 }
 399
 400                                 serv_puts("000");
 401
 402                                 linecount = 0;
 403                                 while (StrBuf_ServGetln(Buf), strcmp(ChrPtr(Buf), "000"))
 404                                 {
 405                                         if (linecount == 0) result = NewStrBufDup(Buf);
 406                                         if (!strcasecmp(ChrPtr(result), "authenticate")) {
 407                                                 if (linecount == 1) {
 408                                                         username = NewStrBufDup(Buf);
 409                                                 }
 410                                                 else if (linecount == 2) {
 411                                                         password = NewStrBufDup(Buf);
 412                                                 }
 413                                                 else if (linecount == 3) {
 414                                                         logged_in_response = NewStrBufDup(Buf);
 415                                                 }
 416                                         }
 417                                         else if (!strcasecmp(ChrPtr(result), "verify_only")) {
 418                                                 if (linecount == 1) {
 419                                                         claimed_id = NewStrBufDup(Buf);
 420                                                 }
 421                                                 if (linecount == 2) {
 422                                                         username = NewStrBufDup(Buf);
 423                                                 }
 424                                         }
 425                                         ++linecount;
 426                                 }
 427                         }
 428                         FreeStrBuf(&Buf);
 429                 }
 430         }
 431
 432         /* If we were already logged in, this was an attempt to associate an OpenID account */
 433         if (already_logged_in) {
 434                 display_openids();
 435                 FreeStrBuf(&result);
 436                 FreeStrBuf(&username);
 437                 FreeStrBuf(&password);
 438                 FreeStrBuf(&claimed_id);
 439                 FreeStrBuf(&logged_in_response);
 440                 return;
 441         }
 442
 443         /* If this operation logged us in, either by connecting with an existing account or by
 444          * auto-creating one using Simple Registration Extension, we're already on our way.
 445          */
 446         if (!strcasecmp(ChrPtr(result), "authenticate")) {
 447                 become_logged_in(username, password, logged_in_response);
 448         }
 449
 450         /* The specified OpenID was verified but the desired user name was either not specified via SRI
 451          * or conflicts with an existing user.  Either way the user will need to specify a new name.
 452          */
 453
 454         else if (!strcasecmp(ChrPtr(result), "verify_only")) {
 455                 putbstr("__claimed_id", claimed_id);
 456                 claimed_id = NULL;
 457                 if (StrLength(username) > 0) {
 458                         putbstr("__username", username);
 459                         username = NULL;
 460                 }
 461                 begin_burst();
 462                 do_template("openid_manual_create", NULL);
 463                 end_burst();
 464         }
 465
 466         /* Did we manage to log in?  If so, continue with the normal flow... */
 467         else if (WC->logged_in) {
 468                 if (WC->need_regi) {
 469                         display_reg(1);
 470                 } else {
 471                         do_welcome();
 472                 }
 473         } else {
 474                 display_openid_login(_("Your password was not accepted."));
 475         }
 476
 477         FreeStrBuf(&result);
 478         FreeStrBuf(&username);
 479         FreeStrBuf(&password);
 480         FreeStrBuf(&claimed_id);
 481         FreeStrBuf(&logged_in_response);
 482 }
 483
 484
 485 /*
 486  * Display a welcome screen to the user.
 487  *
 488  * If this is the first time login, and the web based setup is enabled,
 489  * lead the user through the setup routines
 490  */
 491 void do_welcome(void)
 492 {
 493         StrBuf *Buf;
 494 #ifdef XXX_NOT_FINISHED_YET_XXX
 495         FILE *fp;
 496         int i;
 497
 498         /**
 499          * See if we have to run the first-time setup wizard
 500          */
 501         if (WC->is_aide) {
 502                 if (!setup_wizard) {
 503                         int len;
 504                         sprintf(wizard_filename, "setupwiz.%s.%s",
 505                                 ctdlhost, ctdlport);
 506                         len = strlen(wizard_filename);
 507                         for (i=0; i<len; ++i) {
 508                                 if (    (wizard_filename[i]==' ')
 509                                         || (wizard_filename[i] == '/')
 510                                 ) {
 511                                         wizard_filename[i] = '_';
 512                                 }
 513                         }
 514
 515                         fp = fopen(wizard_filename, "r");
 516                         if (fp != NULL) {
 517                                 fgets(buf, sizeof buf, fp);
 518                                 buf[strlen(buf)-1] = 0;
 519                                 fclose(fp);
 520                                 if (atoi(buf) == serv_info.serv_rev_level) {
 521                                         setup_wizard = 1; /**< already run */
 522                                 }
 523                         }
 524                 }
 525
 526                 if (!setup_wizard) {
 527                         http_redirect("setup_wizard");
 528                 }
 529         }
 530 #endif
 531
 532         /*
 533          * Go to the user's preferred start page
 534          */
 535         if (!get_preference("startpage", &Buf)) {
 536                 Buf = NewStrBuf ();
 537                 StrBufPrintf(Buf, "dotskip?room=_BASEROOM_");
 538                 set_preference("startpage", Buf, 1);
 539         }
 540         if (ChrPtr(Buf)[0] == '/') {
 541                 StrBufCutLeft(Buf, 1);
 542         }
 543         if (StrLength(Buf) == 0) {
 544                 StrBufAppendBufPlain(Buf, "dotgoto?room=_BASEROOM_", -1, 0);
 545         }
 546         lprintf(9, "Redirecting to user's start page: %s\n", ChrPtr(Buf));
 547         http_redirect(ChrPtr(Buf));
 548 }
 549
 550
 551 /*
 552  * Disconnect from the Citadel server, and end this WebCit session
 553  */
 554 void end_webcit_session(void) {
 555
 556         serv_puts("QUIT");
 557         WC->killthis = 1;
 558         /* close() of citadel socket will be done by do_housekeeping() */
 559 }
 560
 561 /*
 562  * execute the logout
 563  */
 564 void do_logout(void)
 565 {
 566         wcsession *WCC = WC;
 567         char buf[SIZ];
 568
 569         FlushStrBuf(WCC->wc_username);
 570         FlushStrBuf(WCC->wc_password);
 571         FlushStrBuf(WCC->wc_fullname);
 572
 573         serv_puts("LOUT");
 574         serv_getln(buf, sizeof buf);
 575         WCC->logged_in = 0;
 576
 577         if (WC->serv_info->serv_supports_guest) {
 578                 display_default_landing_page();
 579                 return;
 580         }
 581
 582         FlushStrBuf(WCC->CurRoom.name);
 583
 584         /* Calling output_headers() this way causes the cookies to be un-set */
 585         output_headers(1, 1, 0, 1, 0, 0);
 586
 587         wc_printf("<div id=\"logout_screen\">");
 588         wc_printf("<div class=\"box\">");
 589         wc_printf("<div class=\"boxlabel\">");
 590         wc_printf(_("Log off"));
 591         wc_printf("</div><div class=\"boxcontent\">");
 592         serv_puts("MESG goodbye");
 593         serv_getln(buf, sizeof buf);
 594
 595         if (WCC->serv_sock >= 0) {
 596                 if (buf[0] == '1') {
 597                         fmout("'CENTER'");
 598                 } else {
 599                         wc_printf("Goodbye\n");
 600                 }
 601         }
 602         else {
 603                 wc_printf(_("This program was unable to connect or stay "
 604                         "connected to the Citadel server.  Please report "
 605                         "this problem to your system administrator.")
 606                 );
 607                 wc_printf("<a href=\"http://www.citadel.org/doku.php/"
 608                         "faq:mastering_your_os:net#netstat\">%s</a>",
 609                         _("Read More..."));
 610         }
 611
 612         wc_printf("<hr /><div class=\"buttons\"> "
 613                 "<span class=\"button_link\"><a href=\".\">");
 614         wc_printf(_("Log in again"));
 615         wc_printf("</a></span>");
 616         wc_printf("</div></div></div>\n");
 617         wDumpContent(2);
 618         end_webcit_session();
 619 }
 620
 621
 622 /*
 623  * validate new users
 624  */
 625 void validate(void)
 626 {
 627         char cmd[SIZ];
 628         char user[SIZ];
 629         char buf[SIZ];
 630         int a;
 631
 632         output_headers(1, 1, 2, 0, 0, 0);
 633         wc_printf("<div id=\"banner\">\n");
 634         wc_printf("<h1>");
 635         wc_printf(_("Validate new users"));
 636         wc_printf("</h1>");
 637         wc_printf("</div>\n");
 638
 639         wc_printf("<div id=\"content\" class=\"service\">\n");
 640
 641         /* If the user just submitted a validation, process it... */
 642         safestrncpy(buf, bstr("user"), sizeof buf);
 643         if (!IsEmptyStr(buf)) {
 644                 if (havebstr("axlevel")) {
 645                         serv_printf("VALI %s|%s", buf, bstr("axlevel"));
 646                         serv_getln(buf, sizeof buf);
 647                         if (buf[0] != '2') {
 648                                 wc_printf("<b>%s</b><br>\n", &buf[4]);
 649                         }
 650                 }
 651         }
 652
 653         /* Now see if any more users require validation. */
 654         serv_puts("GNUR");
 655         serv_getln(buf, sizeof buf);
 656         if (buf[0] == '2') {
 657                 wc_printf("<b>");
 658                 wc_printf(_("No users require validation at this time."));
 659                 wc_printf("</b><br>\n");
 660                 wDumpContent(1);
 661                 return;
 662         }
 663         if (buf[0] != '3') {
 664                 wc_printf("<b>%s</b><br>\n", &buf[4]);
 665                 wDumpContent(1);
 666                 return;
 667         }
 668
 669         wc_printf("<table class=\"auth_validate\"><tr><td>\n");
 670         wc_printf("<div id=\"validate\">");
 671
 672         safestrncpy(user, &buf[4], sizeof user);
 673         serv_printf("GREG %s", user);
 674         serv_getln(cmd, sizeof cmd);
 675         if (cmd[0] == '1') {
 676                 a = 0;
 677                 do {
 678                         serv_getln(buf, sizeof buf);
 679                         ++a;
 680                         if (a == 1)
 681                                 wc_printf("#%s<br><H1>%s</H1>",
 682                                         buf, &cmd[4]);
 683                         if (a == 2) {
 684                                 char *pch;
 685                                 int haveChar = 0;
 686                                 int haveNum = 0;
 687                                 int haveOther = 0;
 688                                 int count = 0;
 689                                 pch = buf;
 690                                 while (!IsEmptyStr(pch))
 691                                 {
 692                                         if (isdigit(*pch))
 693                                                 haveNum = 1;
 694                                         else if (isalpha(*pch))
 695                                                 haveChar = 1;
 696                                         else
 697                                                 haveOther = 1;
 698                                         pch ++;
 699                                 }
 700                                 count = pch - buf;
 701                                 if (count > 7)
 702                                         count = 0;
 703                                 switch (count){
 704                                 case 0:
 705                                         pch = _("very weak");
 706                                         break;
 707                                 case 1:
 708                                         pch = _("weak");
 709                                         break;
 710                                 case 2:
 711                                         pch = _("ok");
 712                                         break;
 713                                 case 3:
 714                                 default:
 715                                         pch = _("strong");
 716                                 }
 717
 718                                 wc_printf("PW: %s<br>\n", pch);
 719                         }
 720                         if (a == 3)
 721                                 wc_printf("%s<br>\n", buf);
 722                         if (a == 4)
 723                                 wc_printf("%s<br>\n", buf);
 724                         if (a == 5)
 725                                 wc_printf("%s, ", buf);
 726                         if (a == 6)
 727                                 wc_printf("%s ", buf);
 728                         if (a == 7)
 729                                 wc_printf("%s<br>\n", buf);
 730                         if (a == 8)
 731                                 wc_printf("%s<br>\n", buf);
 732                         if (a == 9)
 733                                 wc_printf(_("Current access level: %d (%s)\n"),
 734                                         atoi(buf), axdefs[atoi(buf)]);
 735                 } while (strcmp(buf, "000"));
 736         } else {
 737                 wc_printf("<H1>%s</H1>%s<br>\n", user, &cmd[4]);
 738         }
 739
 740         wc_printf("<hr />");
 741         wc_printf(_("Select access level for this user:"));
 742         wc_printf("<br>\n");
 743         for (a = 0; a <= 6; ++a) {
 744                 wc_printf("<a href=\"validate?nonce=%d?user=", WC->nonce);
 745                 urlescputs(user);
 746                 wc_printf("&axlevel=%d\">%s</A>&nbsp;&nbsp;&nbsp;\n",
 747                         a, axdefs[a]);
 748         }
 749         wc_printf("<br>\n");
 750
 751         wc_printf("</div>\n");
 752         wc_printf("</td></tr></table>\n");
 753         wDumpContent(1);
 754 }
 755
 756
 757
 758 /*
 759  * Display form for registration.
 760  *
 761  * (Set during_login to 1 if this registration is being performed during
 762  * new user login and will require chaining to the proper screen.)
 763  */
 764 void display_reg(int during_login)
 765 {
 766         folder Room;
 767         StrBuf *Buf;
 768         message_summary *VCMsg = NULL;
 769         wc_mime_attachment *VCAtt = NULL;
 770         long vcard_msgnum;
 771
 772         Buf = NewStrBuf();
 773         memset(&Room, 0, sizeof(folder));
 774         if (goto_config_room(Buf, &Room) != 0) {
 775                 lprintf(9, "display_reg() exiting because goto_config_room() failed\n");
 776                 if (during_login) {
 777                         do_welcome();
 778                 }
 779                 else {
 780                         display_main_menu();
 781                 }
 782                 FreeStrBuf(&Buf);
 783                 FlushFolder(&Room);
 784                 return;
 785         }
 786         FlushFolder(&Room);
 787
 788         FreeStrBuf(&Buf);
 789         vcard_msgnum = locate_user_vcard_in_this_room(&VCMsg, &VCAtt);
 790         if (vcard_msgnum < 0L) {
 791                 lprintf(9, "display_reg() exiting because locate_user_vcard_in_this_room() failed\n");
 792                 if (during_login) {
 793                         do_welcome();
 794                 }
 795                 else {
 796                         display_main_menu();
 797                 }
 798                 return;
 799         }
 800
 801         if (during_login) {
 802                 do_edit_vcard(vcard_msgnum, "1", VCMsg, VCAtt, "do_welcome", USERCONFIGROOM);
 803         }
 804         else {
 805                 StrBuf *ReturnTo;
 806                 ReturnTo = NewStrBufPlain(HKEY("display_main_menu?gotofirst="));
 807                 StrBufAppendBuf(ReturnTo, WC->CurRoom.name, 0);
 808                 do_edit_vcard(vcard_msgnum, "1", VCMsg, VCAtt, ChrPtr(ReturnTo), USERCONFIGROOM);
 809                 FreeStrBuf(&ReturnTo);
 810         }
 811
 812         /* FIXME - don't we have to free VCMsg and VCAtt ?? */
 813 }
 814
 815
 816
 817
 818 /*
 819  * display form for changing your password
 820  */
 821 void display_changepw(void)
 822 {
 823         WCTemplputParams SubTP;
 824         char buf[SIZ];
 825         StrBuf *Buf;
 826         output_headers(1, 1, 1, 0, 0, 0);
 827
 828         Buf = NewStrBufPlain(_("Change your password"), -1);
 829         memset(&SubTP, 0, sizeof(WCTemplputParams));
 830         SubTP.Filter.ContextType = CTX_STRBUF;
 831         SubTP.Context = Buf;
 832         DoTemplate(HKEY("beginbox"), NULL, &SubTP);
 833
 834         FreeStrBuf(&Buf);
 835
 836         if (!IsEmptyStr(WC->ImportantMessage)) {
 837                 wc_printf("<span class=\"errormsg\">"
 838                         "%s</span><br>\n", WC->ImportantMessage);
 839                 safestrncpy(WC->ImportantMessage, "", sizeof WC->ImportantMessage);
 840         }
 841
 842         serv_puts("MESG changepw");
 843         serv_getln(buf, sizeof buf);
 844         if (buf[0] == '1') {
 845                 fmout("CENTER");
 846         }
 847
 848         wc_printf("<form name=\"changepwform\" action=\"changepw\" method=\"post\">\n");
 849         wc_printf("<input type=\"hidden\" name=\"nonce\" value=\"%d\">\n", WC->nonce);
 850         wc_printf("<table class=\"altern\" ");
 851         wc_printf("<tr class=\"even\"><td>");
 852         wc_printf(_("Enter new password:"));
 853         wc_printf("</td><td>");
 854         wc_printf("<input type=\"password\" name=\"newpass1\" value=\"\" maxlength=\"20\"></td></tr>\n");
 855         wc_printf("<tr class=\"odd\"><td>");
 856         wc_printf(_("Enter it again to confirm:"));
 857         wc_printf("</td><td>");
 858         wc_printf("<input type=\"password\" name=\"newpass2\" value=\"\" maxlength=\"20\"></td></tr>\n");
 859         wc_printf("</table>\n");
 860
 861         wc_printf("<div class=\"buttons\">\n");
 862         wc_printf("<input type=\"submit\" name=\"change_action\" value=\"%s\">", _("Change password"));
 863         wc_printf("&nbsp;");
 864         wc_printf("<input type=\"submit\" name=\"cancel_action\" value=\"%s\">\n", _("Cancel"));
 865         wc_printf("</div>\n");
 866         wc_printf("</form>\n");
 867
 868         do_template("endbox", NULL);
 869         wDumpContent(1);
 870 }
 871
 872 /*
 873  * change password
 874  * if passwords match, propagate it to citserver.
 875  */
 876 void changepw(void)
 877 {
 878         char buf[SIZ];
 879         char newpass1[32], newpass2[32];
 880
 881         if (!havebstr("change_action")) {
 882                 safestrncpy(WC->ImportantMessage,
 883                         _("Cancelled.  Password was not changed."),
 884                         sizeof WC->ImportantMessage);
 885                 display_main_menu();
 886                 return;
 887         }
 888
 889         safestrncpy(newpass1, bstr("newpass1"), sizeof newpass1);
 890         safestrncpy(newpass2, bstr("newpass2"), sizeof newpass2);
 891
 892         if (strcasecmp(newpass1, newpass2)) {
 893                 safestrncpy(WC->ImportantMessage,
 894                         _("They don't match.  Password was not changed."),
 895                         sizeof WC->ImportantMessage);
 896                 display_changepw();
 897                 return;
 898         }
 899
 900         if (IsEmptyStr(newpass1)) {
 901                 safestrncpy(WC->ImportantMessage,
 902                         _("Blank passwords are not allowed."),
 903                         sizeof WC->ImportantMessage);
 904                 display_changepw();
 905                 return;
 906         }
 907
 908         serv_printf("SETP %s", newpass1);
 909         serv_getln(buf, sizeof buf);
 910         sprintf(WC->ImportantMessage, "%s", &buf[4]);
 911         if (buf[0] == '2') {
 912                 if (WC->wc_password == NULL)
 913                         WC->wc_password = NewStrBufPlain(buf, -1);
 914                 else {
 915                         FlushStrBuf(WC->wc_password);
 916                         StrBufAppendBufPlain(WC->wc_password,  buf, -1, 0);
 917                 }
 918                 display_main_menu();
 919         }
 920         else {
 921                 display_changepw();
 922         }
 923 }
 924
 925 int ConditionalHaveAccessCreateRoom(StrBuf *Target, WCTemplputParams *TP)
 926 {
 927         StrBuf *Buf;
 928
 929         Buf = NewStrBuf();
 930         serv_puts("CRE8 0");
 931         StrBuf_ServGetln(Buf);
 932
 933         if (GetServerStatus(Buf, NULL) == 2) {
 934                 StrBufCutLeft(Buf, 4);
 935                 AppendImportantMessage(SKEY(Buf));
 936                 FreeStrBuf(&Buf);
 937                 return 0;
 938         }
 939         FreeStrBuf(&Buf);
 940         return 1;
 941 }
 942
 943 int ConditionalAide(StrBuf *Target, WCTemplputParams *TP)
 944 {
 945         wcsession *WCC = WC;
 946         return (WCC != NULL)? (WC->is_aide == 0) : 0;
 947 }
 948
 949 int ConditionalIsLoggedIn(StrBuf *Target, WCTemplputParams *TP)
 950 {
 951         wcsession *WCC = WC;
 952         return (WCC != NULL)? (WCC->logged_in == 0) : 0;
 953 }
 954
 955
 956 void _display_openid_login(void) {
 957         display_openid_login(NULL);
 958 }
 959
 960
 961 void _display_reg(void) {
 962         display_reg(0);
 963 }
 964
 965
 966 void Header_HandleAuth(StrBuf *Line, ParsedHttpHdrs *hdr)
 967 {
 968         if (hdr->HR.got_auth == NO_AUTH) /* don't override cookie auth... */
 969         {
 970                 if (strncasecmp(ChrPtr(Line), "Basic", 5) == 0) {
 971                         StrBufCutLeft(Line, 6);
 972                         StrBufDecodeBase64(Line);
 973                         hdr->HR.plainauth = Line;
 974                         hdr->HR.got_auth = AUTH_BASIC;
 975                 }
 976                 else
 977                         lprintf(1, "Authentication scheme not supported! [%s]\n", ChrPtr(Line));
 978         }
 979 }
 980
 981 void CheckAuthBasic(ParsedHttpHdrs *hdr)
 982 {
 983 /*
 984   todo: enable this if we can have other sessions than authenticated ones.
 985         if (hdr->DontNeedAuth)
 986                 return;
 987 */
 988         StrBufAppendBufPlain(hdr->HR.plainauth, HKEY(":"), 0);
 989         StrBufAppendBuf(hdr->HR.plainauth, hdr->HR.user_agent, 0);
 990         hdr->HR.SessionKey = hashlittle(SKEY(hdr->HR.plainauth), 89479832);
 991 /*
 992         lprintf(1, "CheckAuthBasic: calculated sessionkey %ld\n",
 993                 hdr->HR.SessionKey);
 994 */
 995 }
 996
 997 void GetAuthBasic(ParsedHttpHdrs *hdr)
 998 {
 999         const char *Pos = NULL;
1000         if (hdr->c_username == NULL)
1001                 hdr->c_username = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_USER));
1002         if (hdr->c_password == NULL)
1003                 hdr->c_password = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_PASS));
1004         StrBufExtract_NextToken(hdr->c_username, hdr->HR.plainauth, &Pos, ':');
1005         StrBufExtract_NextToken(hdr->c_password, hdr->HR.plainauth, &Pos, ':');
1006 }
1007
1008 void Header_HandleCookie(StrBuf *Line, ParsedHttpHdrs *hdr)
1009 {
1010         const char *pch;
1011 /*
1012   todo: enable this if we can have other sessions than authenticated ones.
1013         if (hdr->DontNeedAuth)
1014                 return;
1015 */
1016         pch = strstr(ChrPtr(Line), "webcit=");
1017         if (pch == NULL) {
1018                 return;
1019         }
1020
1021         hdr->HR.RawCookie = Line;
1022         StrBufCutLeft(hdr->HR.RawCookie, (pch - ChrPtr(hdr->HR.RawCookie)) + 7);
1023         StrBufDecodeHex(hdr->HR.RawCookie);
1024
1025         cookie_to_stuff(Line, &hdr->HR.desired_session,
1026                         hdr->c_username,
1027                         hdr->c_password,
1028                         hdr->c_roomname,
1029                         hdr->c_language
1030         );
1031         hdr->HR.got_auth = AUTH_COOKIE;
1032 }
1033
1034 void
1035 HttpNewModule_AUTH
1036 (ParsedHttpHdrs *httpreq)
1037 {
1038         httpreq->c_username = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_USER));
1039         httpreq->c_password = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_PASS));
1040         httpreq->c_roomname = NewStrBuf();
1041         httpreq->c_language = NewStrBuf();
1042 }
1043 void
1044 HttpDetachModule_AUTH
1045 (ParsedHttpHdrs *httpreq)
1046 {
1047         FLUSHStrBuf(httpreq->c_username);
1048         FLUSHStrBuf(httpreq->c_password);
1049         FLUSHStrBuf(httpreq->c_roomname);
1050         FLUSHStrBuf(httpreq->c_language);
1051 }
1052
1053 void
1054 HttpDestroyModule_AUTH
1055 (ParsedHttpHdrs *httpreq)
1056 {
1057         FreeStrBuf(&httpreq->c_username);
1058         FreeStrBuf(&httpreq->c_password);
1059         FreeStrBuf(&httpreq->c_roomname);
1060         FreeStrBuf(&httpreq->c_language);
1061 }
1062
1063 void
1064 InitModule_AUTH
1065 (void)
1066 {
1067         initialize_axdefs();
1068         RegisterHeaderHandler(HKEY("COOKIE"), Header_HandleCookie);
1069         RegisterHeaderHandler(HKEY("AUTHORIZATION"), Header_HandleAuth);
1070
1071         WebcitAddUrlHandler(HKEY(""), "", 0, do_welcome, ANONYMOUS|COOKIEUNNEEDED); /* no url pattern at all? Show login. */
1072         WebcitAddUrlHandler(HKEY("do_welcome"), "", 0, do_welcome, ANONYMOUS|COOKIEUNNEEDED);
1073         WebcitAddUrlHandler(HKEY("login"), "", 0, do_login, ANONYMOUS|COOKIEUNNEEDED);
1074         WebcitAddUrlHandler(HKEY("display_openid_login"), "", 0, _display_openid_login, ANONYMOUS);
1075         WebcitAddUrlHandler(HKEY("openid_login"), "", 0, do_openid_login, ANONYMOUS);
1076         WebcitAddUrlHandler(HKEY("finalize_openid_login"), "", 0, finalize_openid_login, ANONYMOUS);
1077         WebcitAddUrlHandler(HKEY("openid_manual_create"), "", 0, openid_manual_create, ANONYMOUS);
1078         WebcitAddUrlHandler(HKEY("do_logout"), "", 0, do_logout, ANONYMOUS|COOKIEUNNEEDED|FORCE_SESSIONCLOSE);
1079         WebcitAddUrlHandler(HKEY("ajax_login_username_password"), "", 0, ajax_login_username_password, AJAX);
1080         WebcitAddUrlHandler(HKEY("validate"), "", 0, validate, 0);
1081         WebcitAddUrlHandler(HKEY("do_welcome"), "", 0, do_welcome, 0);
1082         WebcitAddUrlHandler(HKEY("display_reg"), "", 0, _display_reg, 0);
1083         WebcitAddUrlHandler(HKEY("display_changepw"), "", 0, display_changepw, 0);
1084         WebcitAddUrlHandler(HKEY("changepw"), "", 0, changepw, 0);
1085         WebcitAddUrlHandler(HKEY("termquit"), "", 0, do_logout, 0);
1086
1087
1088         RegisterConditional(HKEY("COND:AIDE"), 2, ConditionalAide, CTX_NONE);
1089         RegisterConditional(HKEY("COND:LOGGEDIN"), 2, ConditionalIsLoggedIn, CTX_NONE);
1090         RegisterConditional(HKEY("COND:MAY_CREATE_ROOM"), 2,  ConditionalHaveAccessCreateRoom, CTX_NONE);
1091         return;
1092 }
1093
1094
1095 void
1096 SessionDestroyModule_AUTH
1097 (wcsession *sess)
1098 {
1099         FreeStrBuf(&sess->wc_username);
1100         FreeStrBuf(&sess->wc_fullname);
1101         FreeStrBuf(&sess->wc_password);
1102         FreeStrBuf(&sess->httpauth_pass);
1103         FreeStrBuf(&sess->cs_inet_email);
1104 }