webcit/auth.c

   1 /*
   2  * $Id$
   3  *
   4  * WebcitAuth; Handles authentication of users to a Citadel server.
   5  *
   6  * Copyright (c) 1996-2010 by the citadel.org team
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 3 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  */
  22
  23 #include "webcit.h"
  24 #include "webserver.h"
  25 #include <ctype.h>
  26
  27 extern uint32_t hashlittle( const void *key, size_t length, uint32_t initval);
  28
  29 void display_reg(int during_login);
  30
  31 /*
  32  * Access level definitions.  This is initialized from a function rather than a
  33  * static array so that the strings may be localized.
  34  */
  35 char *axdefs[7];
  36
  37 void initialize_axdefs(void) {
  38         axdefs[0] = _("Deleted");       /* an erased user */
  39         axdefs[1] = _("New User");      /* a new user */
  40         axdefs[2] = _("Problem User");  /* a trouble maker */
  41         axdefs[3] = _("Local User");    /* user with normal privileges */
  42         axdefs[4] = _("Network User");  /* a user that may access network resources */
  43         axdefs[5] = _("Preferred User");/* a moderator */
  44         axdefs[6] = _("Aide");          /* chief */
  45 }
  46
  47
  48
  49 /*
  50  * Display the login screen
  51  * mesg = the error message if last attempt failed.
  52  */
  53 void display_login(void)
  54 {
  55         begin_burst();
  56         output_headers(1, 0, 0, 0, 1, 0);
  57         do_template("login", NULL);
  58         end_burst();
  59 }
  60
  61
  62
  63
  64 /*
  65  * Display the openid-enabled login screen
  66  * mesg = the error message if last attempt failed.
  67  */
  68 void display_openid_login(char *mesg)
  69 {
  70   begin_burst();
  71   output_headers(1, 0, 0, 0, 1, 0);
  72   do_template("openid_login", NULL);
  73   end_burst();
  74 }
  75
  76
  77
  78
  79 /* Initialize the session
  80  *
  81  * This function needs to get called whenever the session changes from
  82  * not-logged-in to logged-in, either by an explicit login by the user or
  83  * by a timed-out session automatically re-establishing with a little help
  84  * from the browser cookie.  Either way, we need to load access controls and
  85  * preferences from the server.
  86  *
  87  * user                 the username
  88  * pass                 his password
  89  * serv_response        The parameters returned from a Citadel USER or NEWU command
  90  */
  91 void become_logged_in(const StrBuf *user, const StrBuf *pass, StrBuf *serv_response)
  92 {
  93         wcsession *WCC = WC;
  94         StrBuf *Buf;
  95         StrBuf *FloorDiv;
  96
  97         WCC->logged_in = 1;
  98
  99         if (WCC->wc_fullname == NULL)
 100                 WCC->wc_fullname = NewStrBufPlain(NULL, StrLength(serv_response));
 101         StrBufExtract_token(WCC->wc_fullname, serv_response, 0, '|');
 102         StrBufCutLeft(WCC->wc_fullname, 4 );
 103
 104         if (WCC->wc_username == NULL)
 105                 WCC->wc_username = NewStrBufDup(user);
 106         else {
 107                 FlushStrBuf(WCC->wc_username);
 108                 StrBufAppendBuf(WCC->wc_username, user, 0);
 109         }
 110
 111         if (WCC->wc_password == NULL)
 112                 WCC->wc_password = NewStrBufDup(pass);
 113         else {
 114                 FlushStrBuf(WCC->wc_password);
 115                 StrBufAppendBuf(WCC->wc_password, pass, 0);
 116         }
 117
 118         WCC->axlevel = StrBufExtract_int(serv_response, 1, '|');
 119         if (WCC->axlevel >= 6) { /* TODO: make this a define, else it might trick us later */
 120                 WCC->is_aide = 1;
 121         }
 122
 123         load_preferences();
 124
 125         Buf = NewStrBuf();
 126         serv_puts("CHEK");
 127         StrBuf_ServGetln(Buf);
 128         if (GetServerStatus(Buf, NULL) == 2) {
 129                 const char *pch;
 130
 131                 pch = ChrPtr(Buf) + 4;
 132                 /*WCC->new_mail  =*/ StrBufExtractNext_long(Buf, &pch, '|');
 133                 WCC->need_regi = StrBufExtractNext_long(Buf, &pch, '|');
 134                 WCC->need_vali = StrBufExtractNext_long(Buf, &pch, '|');
 135                 if (WCC->cs_inet_email == NULL)
 136                         WCC->cs_inet_email  = NewStrBuf();
 137                 StrBufExtract_NextToken(WCC->cs_inet_email, Buf, &pch, '|');
 138         }
 139         get_preference("floordiv_expanded", &FloorDiv);
 140         WCC->floordiv_expanded = FloorDiv;
 141         FreeStrBuf(&Buf);
 142 }
 143
 144
 145 /*
 146  * Perform authentication using a user name and password
 147  */
 148 void do_login(void)
 149 {
 150         wcsession *WCC = WC;
 151         StrBuf *Buf;
 152         long ret, rc;
 153
 154         if (havebstr("language")) {
 155                 set_selected_language(bstr("language"));
 156                 go_selected_language();
 157         }
 158
 159         if (havebstr("exit_action")) {
 160                 do_logout();
 161                 return;
 162         }
 163         Buf = NewStrBuf();
 164         if (havebstr("login_action")) {
 165                 serv_printf("USER %s", bstr("name"));
 166                 StrBuf_ServGetln(Buf);
 167                 rc = GetServerStatus(Buf, &ret);
 168                 StrBufCutLeft(Buf, 4);
 169                 switch (rc) {
 170                 case 3:
 171                         serv_printf("PASS %s", bstr("pass"));
 172                         StrBuf_ServGetln(Buf);
 173                         if (GetServerStatus(Buf, NULL) == 2) {
 174                                 become_logged_in(sbstr("name"), sbstr("pass"), Buf);
 175                         } else {
 176                                 StrBufCutLeft(Buf, 4);
 177                                 AppendImportantMessage(SKEY(Buf));
 178                                 display_login();
 179                                 FreeStrBuf(&Buf);
 180                                 return;
 181                         }
 182                         break;
 183                 case 5:
 184                         if (ret == 541)
 185                         {
 186                                 AppendImportantMessage(SKEY(Buf));
 187                                 display_main_menu();
 188                                 return;
 189                         }
 190                 default:
 191                         AppendImportantMessage(SKEY(Buf));
 192                         display_login();
 193                         FreeStrBuf(&Buf);
 194                         return;
 195                 }
 196         }
 197         if (havebstr("newuser_action")) {
 198                 if (!havebstr("pass")) {
 199                         AppendImportantMessage(_("Blank passwords are not allowed."), -1);
 200                         display_login();
 201                         FreeStrBuf(&Buf);
 202                         return;
 203                 }
 204                 serv_printf("NEWU %s", bstr("name"));
 205                 StrBuf_ServGetln(Buf);
 206                 if (GetServerStatus(Buf, NULL) == 2) {
 207                         become_logged_in(sbstr("name"), sbstr("pass"), Buf);
 208                         serv_printf("SETP %s", bstr("pass"));
 209                         StrBuf_ServGetln(Buf); /* Don't care? */
 210                 } else {
 211                         StrBufCutLeft(Buf, 4);
 212                         AppendImportantMessage(SKEY(Buf));
 213                         display_login();
 214                         FreeStrBuf(&Buf);
 215                         return;
 216                 }
 217         }
 218         if (WCC->logged_in) {
 219                 if (WCC->need_regi) {
 220                         display_reg(1);
 221                 } else if (WCC->need_vali) {
 222                         validate();
 223                 } else {
 224                         do_welcome();
 225                 }
 226         } else {
 227                 AppendImportantMessage(_("Your password was not accepted."), -1);
 228                 display_login();
 229         }
 230         FreeStrBuf(&Buf);
 231 }
 232
 233 /*
 234  * Try to create an account manually after an OpenID was verified
 235  */
 236 void openid_manual_create(void)
 237 {
 238         StrBuf *Buf;
 239
 240         if (havebstr("exit_action")) {
 241                 do_logout();
 242                 return;
 243         }
 244
 245         if (havebstr("newuser_action")) {
 246                 Buf = NewStrBuf();
 247                 serv_printf("OIDC %s", bstr("name"));
 248                 StrBuf_ServGetln(Buf);
 249                 if (GetServerStatus(Buf, NULL) == 2) {
 250                         StrBuf *gpass;
 251
 252                         gpass = NewStrBuf();
 253                         serv_puts("SETP GENERATE_RANDOM_PASSWORD");
 254                         StrBuf_ServGetln(gpass);
 255                         StrBufCutLeft(gpass, 4);
 256                         become_logged_in(sbstr("name"), gpass, Buf);
 257                         FreeStrBuf(&gpass);
 258                 }
 259                 FreeStrBuf(&Buf);
 260         }
 261
 262         if (WC->logged_in) {
 263                 if (WC->need_regi) {
 264                         display_reg(1);
 265                 } else if (WC->need_vali) {
 266                         validate();
 267                 } else {
 268                         do_welcome();
 269                 }
 270         } else {
 271                 const StrBuf *Buf;
 272
 273                 putbstr("__claimed_id", NewStrBufDup(sbstr("openid_url")));
 274                 Buf = sbstr("name");
 275                 if (StrLength(Buf) > 0)
 276                         putbstr("__username", NewStrBufDup(Buf));
 277                 begin_burst();
 278                 do_template("openid_manual_create", NULL);
 279                 end_burst();
 280         }
 281
 282 }
 283
 284
 285 /*
 286  * Perform authentication using OpenID
 287  * assemble the checkid_setup request and then redirect to the user's identity provider
 288  */
 289 void do_openid_login(void)
 290 {
 291         wcsession *WCC = WC;
 292         char buf[4096];
 293
 294         if (havebstr("language")) {
 295                 set_selected_language(bstr("language"));
 296                 go_selected_language();
 297         }
 298
 299         if (havebstr("exit_action")) {
 300                 do_logout();
 301                 return;
 302         }
 303         if (havebstr("login_action")) {
 304                 snprintf(buf, sizeof buf,
 305                         "OIDS %s|%s://%s/finalize_openid_login|%s://%s",
 306                         bstr("openid_url"),
 307                          (is_https ? "https" : "http"), ChrPtr(WCC->Hdr->HR.http_host),
 308                          (is_https ? "https" : "http"), ChrPtr(WCC->Hdr->HR.http_host)
 309                 );
 310
 311                 serv_puts(buf);
 312                 serv_getln(buf, sizeof buf);
 313                 if (buf[0] == '2') {
 314                         lprintf(CTDL_DEBUG, "OpenID server contacted; redirecting to %s\n", &buf[4]);
 315                         http_redirect(&buf[4]);
 316                         return;
 317                 }
 318                 else {
 319                         display_openid_login(&buf[4]);
 320                         return;
 321                 }
 322         }
 323
 324         /* If we get to this point then something failed. */
 325         display_openid_login(_("Your password was not accepted."));
 326 }
 327
 328 /*
 329  * Complete the authentication using OpenID
 330  * This function handles the positive or negative assertion from the user's Identity Provider
 331  */
 332 void finalize_openid_login(void)
 333 {
 334         StrBuf *Buf;
 335         wcsession *WCC = WC;
 336         int already_logged_in = (WCC->logged_in) ;
 337         int linecount = 0;
 338         StrBuf *result = NULL;
 339         StrBuf *username = NULL;
 340         StrBuf *password = NULL;
 341         StrBuf *logged_in_response = NULL;
 342         StrBuf *claimed_id = NULL;
 343
 344         if (havebstr("openid.mode")) {
 345                 if (!strcasecmp(bstr("openid.mode"), "id_res")) {
 346                         Buf = NewStrBuf();
 347                         serv_puts("OIDF");
 348                         StrBuf_ServGetln(Buf);
 349                         if (GetServerStatus(Buf, NULL) == 8) {
 350                                 urlcontent *u;
 351                                 void *U;
 352                                 long HKLen;
 353                                 const char *HKey;
 354                                 HashPos *Cursor;
 355
 356                                 Cursor = GetNewHashPos (WCC->Hdr->urlstrings, 0);
 357                                 while (GetNextHashPos(WCC->Hdr->urlstrings, Cursor, &HKLen, &HKey, &U)) {
 358                                         u = (urlcontent*) U;
 359                                         if (!strncasecmp(u->url_key, "openid.", 7)) {
 360                                                 serv_printf("%s|%s", &u->url_key[7], ChrPtr(u->url_data));
 361                                         }
 362                                 }
 363
 364                                 serv_puts("000");
 365
 366                                 linecount = 0;
 367                                 while (StrBuf_ServGetln(Buf), strcmp(ChrPtr(Buf), "000"))
 368                                 {
 369                                         if (linecount == 0) result = NewStrBufDup(Buf);
 370                                         if (!strcasecmp(ChrPtr(result), "authenticate")) {
 371                                                 if (linecount == 1) {
 372                                                         username = NewStrBufDup(Buf);
 373                                                 }
 374                                                 else if (linecount == 2) {
 375                                                         password = NewStrBufDup(Buf);
 376                                                 }
 377                                                 else if (linecount == 3) {
 378                                                         logged_in_response = NewStrBufDup(Buf);
 379                                                 }
 380                                         }
 381                                         else if (!strcasecmp(ChrPtr(result), "verify_only")) {
 382                                                 if (linecount == 1) {
 383                                                         claimed_id = NewStrBufDup(Buf);
 384                                                 }
 385                                                 if (linecount == 2) {
 386                                                         username = NewStrBufDup(Buf);
 387                                                 }
 388                                         }
 389                                         ++linecount;
 390                                 }
 391                         }
 392                         FreeStrBuf(&Buf);
 393                 }
 394         }
 395
 396         /* If we were already logged in, this was an attempt to associate an OpenID account */
 397         if (already_logged_in) {
 398                 display_openids();
 399                 FreeStrBuf(&result);
 400                 FreeStrBuf(&username);
 401                 FreeStrBuf(&password);
 402                 FreeStrBuf(&claimed_id);
 403                 FreeStrBuf(&logged_in_response);
 404                 return;
 405         }
 406
 407         /* If this operation logged us in, either by connecting with an existing account or by
 408          * auto-creating one using Simple Registration Extension, we're already on our way.
 409          */
 410         if (!strcasecmp(ChrPtr(result), "authenticate")) {
 411                 become_logged_in(username, password, logged_in_response);
 412         }
 413
 414         /* The specified OpenID was verified but the desired user name was either not specified via SRI
 415          * or conflicts with an existing user.  Either way the user will need to specify a new name.
 416          */
 417
 418         else if (!strcasecmp(ChrPtr(result), "verify_only")) {
 419                 putbstr("__claimed_id", claimed_id);
 420                 claimed_id = NULL;
 421                 if (StrLength(username) > 0) {
 422                         putbstr("__username", username);
 423                         username = NULL;
 424                 }
 425                 begin_burst();
 426                 do_template("openid_manual_create", NULL);
 427                 end_burst();
 428         }
 429
 430         /* Did we manage to log in?  If so, continue with the normal flow... */
 431         else if (WC->logged_in) {
 432                 if (WC->need_regi) {
 433                         display_reg(1);
 434                 } else {
 435                         do_welcome();
 436                 }
 437         } else {
 438                 display_openid_login(_("Your password was not accepted."));
 439         }
 440
 441         FreeStrBuf(&result);
 442         FreeStrBuf(&username);
 443         FreeStrBuf(&password);
 444         FreeStrBuf(&claimed_id);
 445         FreeStrBuf(&logged_in_response);
 446 }
 447
 448
 449 /*
 450  * Display a welcome screen to the user.
 451  *
 452  * If this is the first time login, and the web based setup is enabled,
 453  * lead the user through the setup routines
 454  */
 455 void do_welcome(void)
 456 {
 457         StrBuf *Buf;
 458 #ifdef XXX_NOT_FINISHED_YET_XXX
 459         FILE *fp;
 460         int i;
 461
 462         /**
 463          * See if we have to run the first-time setup wizard
 464          */
 465         if (WC->is_aide) {
 466                 if (!setup_wizard) {
 467                         int len;
 468                         sprintf(wizard_filename, "setupwiz.%s.%s",
 469                                 ctdlhost, ctdlport);
 470                         len = strlen(wizard_filename);
 471                         for (i=0; i<len; ++i) {
 472                                 if (    (wizard_filename[i]==' ')
 473                                         || (wizard_filename[i] == '/')
 474                                 ) {
 475                                         wizard_filename[i] = '_';
 476                                 }
 477                         }
 478
 479                         fp = fopen(wizard_filename, "r");
 480                         if (fp != NULL) {
 481                                 fgets(buf, sizeof buf, fp);
 482                                 buf[strlen(buf)-1] = 0;
 483                                 fclose(fp);
 484                                 if (atoi(buf) == serv_info.serv_rev_level) {
 485                                         setup_wizard = 1; /**< already run */
 486                                 }
 487                         }
 488                 }
 489
 490                 if (!setup_wizard) {
 491                         http_redirect("setup_wizard");
 492                 }
 493         }
 494 #endif
 495
 496         /*
 497          * Go to the user's preferred start page
 498          */
 499         if (!get_preference("startpage", &Buf)) {
 500                 Buf = NewStrBuf ();
 501                 StrBufPrintf(Buf, "dotskip?room=_BASEROOM_");
 502                 set_preference("startpage", Buf, 1);
 503         }
 504         if (ChrPtr(Buf)[0] == '/') {
 505                 StrBufCutLeft(Buf, 1);
 506         }
 507         if (StrLength(Buf) == 0) {
 508                 StrBufAppendBufPlain(Buf, "dotgoto?room=_BASEROOM_", -1, 0);
 509         }
 510         lprintf(9, "Redirecting to user's start page: %s\n", ChrPtr(Buf));
 511         http_redirect(ChrPtr(Buf));
 512 }
 513
 514
 515 /*
 516  * Disconnect from the Citadel server, and end this WebCit session
 517  */
 518 void end_webcit_session(void) {
 519
 520         serv_puts("QUIT");
 521         WC->killthis = 1;
 522         /* close() of citadel socket will be done by do_housekeeping() */
 523 }
 524
 525 /*
 526  * execute the logout
 527  */
 528 void do_logout(void)
 529 {
 530         wcsession *WCC = WC;
 531         char buf[SIZ];
 532
 533         FlushStrBuf(WCC->wc_username);
 534         FlushStrBuf(WCC->wc_password);
 535         FlushStrBuf(WCC->CurRoom.name);
 536         FlushStrBuf(WCC->wc_fullname);
 537
 538         /* FIXME: this is to suppress the iconbar displaying, because we aren't
 539            actually logged out yet */
 540         WCC->logged_in = 0;
 541
 542         /** Calling output_headers() this way causes the cookies to be un-set */
 543         output_headers(1, 1, 0, 1, 0, 0);
 544
 545         wc_printf("<div id=\"logout_screen\">");
 546         wc_printf("<div class=\"box\">");
 547         wc_printf("<div class=\"boxlabel\">");
 548         wc_printf(_("Log off"));
 549         wc_printf("</div><div class=\"boxcontent\">");
 550         serv_puts("MESG goodbye");
 551         serv_getln(buf, sizeof buf);
 552
 553         if (WCC->serv_sock >= 0) {
 554                 if (buf[0] == '1') {
 555                         fmout("'CENTER'");
 556                 } else {
 557                         wc_printf("Goodbye\n");
 558                 }
 559         }
 560         else {
 561                 wc_printf(_("This program was unable to connect or stay "
 562                         "connected to the Citadel server.  Please report "
 563                         "this problem to your system administrator.")
 564                 );
 565                 wc_printf("<a href=\"http://www.citadel.org/doku.php/"
 566                         "faq:mastering_your_os:net#netstat\">%s</a>",
 567                         _("Read More..."));
 568         }
 569
 570         wc_printf("<hr /><div class=\"buttons\"> "
 571                 "<span class=\"button_link\"><a href=\".\">");
 572         wc_printf(_("Log in again"));
 573         wc_printf("</a></span>");
 574
 575         /* The "close window" link is commented out because some browsers don't
 576          * allow it to work.
 577          *
 578         wc_printf("&nbsp;&nbsp;&nbsp;<span class=\"button_link\">"
 579                 "<a href=\"javascript:window.close();\">");
 580         wc_printf(_("Close window"));
 581         wc_printf("</a></span>");
 582          */
 583
 584         wc_printf("</div></div></div>\n");
 585         wDumpContent(2);
 586         end_webcit_session();
 587 }
 588
 589
 590 /*
 591  * validate new users
 592  */
 593 void validate(void)
 594 {
 595         char cmd[SIZ];
 596         char user[SIZ];
 597         char buf[SIZ];
 598         int a;
 599
 600         output_headers(1, 1, 2, 0, 0, 0);
 601         wc_printf("<div id=\"banner\">\n");
 602         wc_printf("<h1>");
 603         wc_printf(_("Validate new users"));
 604         wc_printf("</h1>");
 605         wc_printf("</div>\n");
 606
 607         wc_printf("<div id=\"content\" class=\"service\">\n");
 608
 609         /* If the user just submitted a validation, process it... */
 610         safestrncpy(buf, bstr("user"), sizeof buf);
 611         if (!IsEmptyStr(buf)) {
 612                 if (havebstr("axlevel")) {
 613                         serv_printf("VALI %s|%s", buf, bstr("axlevel"));
 614                         serv_getln(buf, sizeof buf);
 615                         if (buf[0] != '2') {
 616                                 wc_printf("<b>%s</b><br>\n", &buf[4]);
 617                         }
 618                 }
 619         }
 620
 621         /* Now see if any more users require validation. */
 622         serv_puts("GNUR");
 623         serv_getln(buf, sizeof buf);
 624         if (buf[0] == '2') {
 625                 wc_printf("<b>");
 626                 wc_printf(_("No users require validation at this time."));
 627                 wc_printf("</b><br>\n");
 628                 wDumpContent(1);
 629                 return;
 630         }
 631         if (buf[0] != '3') {
 632                 wc_printf("<b>%s</b><br>\n", &buf[4]);
 633                 wDumpContent(1);
 634                 return;
 635         }
 636
 637         wc_printf("<div class=\"fix_scrollbar_bug\">"
 638                 "<table class=\"auth_validate\"><tr><td>\n");
 639         wc_printf("<div id=\"validate\">");
 640
 641         safestrncpy(user, &buf[4], sizeof user);
 642         serv_printf("GREG %s", user);
 643         serv_getln(cmd, sizeof cmd);
 644         if (cmd[0] == '1') {
 645                 a = 0;
 646                 do {
 647                         serv_getln(buf, sizeof buf);
 648                         ++a;
 649                         if (a == 1)
 650                                 wc_printf("#%s<br><H1>%s</H1>",
 651                                         buf, &cmd[4]);
 652                         if (a == 2) {
 653                                 char *pch;
 654                                 int haveChar = 0;
 655                                 int haveNum = 0;
 656                                 int haveOther = 0;
 657                                 int count = 0;
 658                                 pch = buf;
 659                                 while (!IsEmptyStr(pch))
 660                                 {
 661                                         if (isdigit(*pch))
 662                                                 haveNum = 1;
 663                                         else if (isalpha(*pch))
 664                                                 haveChar = 1;
 665                                         else
 666                                                 haveOther = 1;
 667                                         pch ++;
 668                                 }
 669                                 count = pch - buf;
 670                                 if (count > 7)
 671                                         count = 0;
 672                                 switch (count){
 673                                 case 0:
 674                                         pch = _("very weak");
 675                                         break;
 676                                 case 1:
 677                                         pch = _("weak");
 678                                         break;
 679                                 case 2:
 680                                         pch = _("ok");
 681                                         break;
 682                                 case 3:
 683                                 default:
 684                                         pch = _("strong");
 685                                 }
 686
 687                                 wc_printf("PW: %s<br>\n", pch);
 688                         }
 689                         if (a == 3)
 690                                 wc_printf("%s<br>\n", buf);
 691                         if (a == 4)
 692                                 wc_printf("%s<br>\n", buf);
 693                         if (a == 5)
 694                                 wc_printf("%s, ", buf);
 695                         if (a == 6)
 696                                 wc_printf("%s ", buf);
 697                         if (a == 7)
 698                                 wc_printf("%s<br>\n", buf);
 699                         if (a == 8)
 700                                 wc_printf("%s<br>\n", buf);
 701                         if (a == 9)
 702                                 wc_printf(_("Current access level: %d (%s)\n"),
 703                                         atoi(buf), axdefs[atoi(buf)]);
 704                 } while (strcmp(buf, "000"));
 705         } else {
 706                 wc_printf("<H1>%s</H1>%s<br />\n", user, &cmd[4]);
 707         }
 708
 709         wc_printf("<hr />");
 710         wc_printf(_("Select access level for this user:"));
 711         wc_printf("<br />\n");
 712         for (a = 0; a <= 6; ++a) {
 713                 wc_printf("<a href=\"validate?nonce=%d?user=", WC->nonce);
 714                 urlescputs(user);
 715                 wc_printf("&axlevel=%d\">%s</A>&nbsp;&nbsp;&nbsp;\n",
 716                         a, axdefs[a]);
 717         }
 718         wc_printf("<br />\n");
 719
 720         wc_printf("</div>\n");
 721         wc_printf("</td></tr></table></div>\n");
 722         wDumpContent(1);
 723 }
 724
 725
 726
 727 /*
 728  * Display form for registration.
 729  *
 730  * (Set during_login to 1 if this registration is being performed during
 731  * new user login and will require chaining to the proper screen.)
 732  */
 733 void display_reg(int during_login)
 734 {
 735         folder Room;
 736         StrBuf *Buf;
 737         message_summary *VCMsg = NULL;
 738         wc_mime_attachment *VCAtt = NULL;
 739         long vcard_msgnum;
 740
 741         Buf = NewStrBuf();
 742         memset(&Room, 0, sizeof(folder));
 743         if (goto_config_room(Buf, &Room) != 0) {
 744                 lprintf(9, "display_reg() exiting because goto_config_room() failed\n");
 745                 if (during_login) {
 746                         do_welcome();
 747                 }
 748                 else {
 749                         display_main_menu();
 750                 }
 751                 FreeStrBuf(&Buf);
 752                 FlushFolder(&Room);
 753                 return;
 754         }
 755         FlushFolder(&Room);
 756
 757         FreeStrBuf(&Buf);
 758         vcard_msgnum = locate_user_vcard_in_this_room(&VCMsg, &VCAtt);
 759         if (vcard_msgnum < 0L) {
 760                 lprintf(9, "display_reg() exiting because locate_user_vcard_in_this_room() failed\n");
 761                 if (during_login) {
 762                         do_welcome();
 763                 }
 764                 else {
 765                         display_main_menu();
 766                 }
 767                 return;
 768         }
 769
 770         if (during_login) {
 771                 do_edit_vcard(vcard_msgnum, "1", VCMsg, VCAtt, "do_welcome", USERCONFIGROOM);
 772         }
 773         else {
 774                 StrBuf *ReturnTo;
 775                 ReturnTo = NewStrBufPlain(HKEY("display_main_menu?gotofirst="));
 776                 StrBufAppendBuf(ReturnTo, WC->CurRoom.name, 0);
 777                 do_edit_vcard(vcard_msgnum, "1", VCMsg, VCAtt, ChrPtr(ReturnTo), USERCONFIGROOM);
 778                 FreeStrBuf(&ReturnTo);
 779         }
 780
 781         /* FIXME - don't we have to free VCMsg and VCAtt ?? */
 782 }
 783
 784
 785
 786
 787 /*
 788  * display form for changing your password
 789  */
 790 void display_changepw(void)
 791 {
 792         WCTemplputParams SubTP;
 793         char buf[SIZ];
 794         StrBuf *Buf;
 795         output_headers(1, 1, 1, 0, 0, 0);
 796
 797         Buf = NewStrBufPlain(_("Change your password"), -1);
 798         memset(&SubTP, 0, sizeof(WCTemplputParams));
 799         SubTP.Filter.ContextType = CTX_STRBUF;
 800         SubTP.Context = Buf;
 801         DoTemplate(HKEY("beginbox"), NULL, &SubTP);
 802
 803         FreeStrBuf(&Buf);
 804
 805         if (!IsEmptyStr(WC->ImportantMessage)) {
 806                 wc_printf("<span class=\"errormsg\">"
 807                         "%s</span><br />\n", WC->ImportantMessage);
 808                 safestrncpy(WC->ImportantMessage, "", sizeof WC->ImportantMessage);
 809         }
 810
 811         serv_puts("MESG changepw");
 812         serv_getln(buf, sizeof buf);
 813         if (buf[0] == '1') {
 814                 fmout("CENTER");
 815         }
 816
 817         wc_printf("<form name=\"changepwform\" action=\"changepw\" method=\"post\">\n");
 818         wc_printf("<input type=\"hidden\" name=\"nonce\" value=\"%d\">\n", WC->nonce);
 819         wc_printf("<table class=\"altern\" ");
 820         wc_printf("<tr class=\"even\"><td>");
 821         wc_printf(_("Enter new password:"));
 822         wc_printf("</td><td>");
 823         wc_printf("<input type=\"password\" name=\"newpass1\" value=\"\" maxlength=\"20\"></td></tr>\n");
 824         wc_printf("<tr class=\"odd\"><td>");
 825         wc_printf(_("Enter it again to confirm:"));
 826         wc_printf("</td><td>");
 827         wc_printf("<input type=\"password\" name=\"newpass2\" value=\"\" maxlength=\"20\"></td></tr>\n");
 828         wc_printf("</table>\n");
 829
 830         wc_printf("<div class=\"buttons\">\n");
 831         wc_printf("<input type=\"submit\" name=\"change_action\" value=\"%s\">", _("Change password"));
 832         wc_printf("&nbsp;");
 833         wc_printf("<input type=\"submit\" name=\"cancel_action\" value=\"%s\">\n", _("Cancel"));
 834         wc_printf("</div>\n");
 835         wc_printf("</form>\n");
 836
 837         do_template("endbox", NULL);
 838         wDumpContent(1);
 839 }
 840
 841 /*
 842  * change password
 843  * if passwords match, propagate it to citserver.
 844  */
 845 void changepw(void)
 846 {
 847         char buf[SIZ];
 848         char newpass1[32], newpass2[32];
 849
 850         if (!havebstr("change_action")) {
 851                 safestrncpy(WC->ImportantMessage,
 852                         _("Cancelled.  Password was not changed."),
 853                         sizeof WC->ImportantMessage);
 854                 display_main_menu();
 855                 return;
 856         }
 857
 858         safestrncpy(newpass1, bstr("newpass1"), sizeof newpass1);
 859         safestrncpy(newpass2, bstr("newpass2"), sizeof newpass2);
 860
 861         if (strcasecmp(newpass1, newpass2)) {
 862                 safestrncpy(WC->ImportantMessage,
 863                         _("They don't match.  Password was not changed."),
 864                         sizeof WC->ImportantMessage);
 865                 display_changepw();
 866                 return;
 867         }
 868
 869         if (IsEmptyStr(newpass1)) {
 870                 safestrncpy(WC->ImportantMessage,
 871                         _("Blank passwords are not allowed."),
 872                         sizeof WC->ImportantMessage);
 873                 display_changepw();
 874                 return;
 875         }
 876
 877         serv_printf("SETP %s", newpass1);
 878         serv_getln(buf, sizeof buf);
 879         sprintf(WC->ImportantMessage, "%s", &buf[4]);
 880         if (buf[0] == '2') {
 881                 if (WC->wc_password == NULL)
 882                         WC->wc_password = NewStrBufPlain(buf, -1);
 883                 else {
 884                         FlushStrBuf(WC->wc_password);
 885                         StrBufAppendBufPlain(WC->wc_password,  buf, -1, 0);
 886                 }
 887                 display_main_menu();
 888         }
 889         else {
 890                 display_changepw();
 891         }
 892 }
 893
 894 int ConditionalHaveAccessCreateRoom(StrBuf *Target, WCTemplputParams *TP)
 895 {
 896         StrBuf *Buf;
 897
 898         Buf = NewStrBuf();
 899         serv_puts("CRE8 0");
 900         StrBuf_ServGetln(Buf);
 901
 902         if (GetServerStatus(Buf, NULL) == 2) {
 903                 StrBufCutLeft(Buf, 4);
 904                 AppendImportantMessage(SKEY(Buf));
 905                 FreeStrBuf(&Buf);
 906                 return 0;
 907         }
 908         FreeStrBuf(&Buf);
 909         return 1;
 910 }
 911
 912 int ConditionalAide(StrBuf *Target, WCTemplputParams *TP)
 913 {
 914         wcsession *WCC = WC;
 915         return (WCC != NULL)? (WC->is_aide == 0) : 0;
 916 }
 917
 918 int ConditionalIsLoggedIn(StrBuf *Target, WCTemplputParams *TP)
 919 {
 920         wcsession *WCC = WC;
 921         return (WCC != NULL)? (WCC->logged_in == 0) : 0;
 922 }
 923
 924
 925 void _display_openid_login(void) {
 926         display_openid_login(NULL);
 927 }
 928
 929
 930 void _display_reg(void) {
 931         display_reg(0);
 932 }
 933
 934
 935 void Header_HandleAuth(StrBuf *Line, ParsedHttpHdrs *hdr)
 936 {
 937         if (hdr->HR.got_auth == NO_AUTH) /* don't override cookie auth... */
 938         {
 939                 if (strncasecmp(ChrPtr(Line), "Basic", 5) == 0) {
 940                         StrBufCutLeft(Line, 6);
 941                         StrBufDecodeBase64(Line);
 942                         hdr->HR.plainauth = Line;
 943                         hdr->HR.got_auth = AUTH_BASIC;
 944                 }
 945                 else
 946                         lprintf(1, "Authentication scheme not supported! [%s]\n", ChrPtr(Line));
 947         }
 948 }
 949
 950 void CheckAuthBasic(ParsedHttpHdrs *hdr)
 951 {
 952 /*
 953   todo: enable this if we can have other sessions than authenticated ones.
 954         if (hdr->DontNeedAuth)
 955                 return;
 956 */
 957         StrBufAppendBufPlain(hdr->HR.plainauth, HKEY(":"), 0);
 958         StrBufAppendBuf(hdr->HR.plainauth, hdr->HR.user_agent, 0);
 959         hdr->HR.SessionKey = hashlittle(SKEY(hdr->HR.plainauth), 89479832);
 960 /*
 961         lprintf(1, "CheckAuthBasic: calculated sessionkey %ld\n",
 962                 hdr->HR.SessionKey);
 963 */
 964 }
 965
 966 void GetAuthBasic(ParsedHttpHdrs *hdr)
 967 {
 968         const char *Pos = NULL;
 969         if (hdr->c_username == NULL)
 970                 hdr->c_username = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_USER));
 971         if (hdr->c_password == NULL)
 972                 hdr->c_password = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_PASS));
 973         StrBufExtract_NextToken(hdr->c_username, hdr->HR.plainauth, &Pos, ':');
 974         StrBufExtract_NextToken(hdr->c_password, hdr->HR.plainauth, &Pos, ':');
 975 }
 976
 977 void Header_HandleCookie(StrBuf *Line, ParsedHttpHdrs *hdr)
 978 {
 979         const char *pch;
 980 /*
 981   todo: enable this if we can have other sessions than authenticated ones.
 982         if (hdr->DontNeedAuth)
 983                 return;
 984 */
 985         pch = strstr(ChrPtr(Line), "webcit=");
 986         if (pch == NULL) {
 987                 return;
 988         }
 989
 990         hdr->HR.RawCookie = Line;
 991         StrBufCutLeft(hdr->HR.RawCookie, (pch - ChrPtr(hdr->HR.RawCookie)) + 7);
 992         StrBufDecodeHex(hdr->HR.RawCookie);
 993
 994         cookie_to_stuff(Line, &hdr->HR.desired_session,
 995                         hdr->c_username,
 996                         hdr->c_password,
 997                         hdr->c_roomname,
 998                         hdr->c_language
 999         );
1000         hdr->HR.got_auth = AUTH_COOKIE;
1001 }
1002
1003 void
1004 HttpNewModule_AUTH
1005 (ParsedHttpHdrs *httpreq)
1006 {
1007         httpreq->c_username = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_USER));
1008         httpreq->c_password = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_PASS));
1009         httpreq->c_roomname = NewStrBuf();
1010         httpreq->c_language = NewStrBuf();
1011 }
1012 void
1013 HttpDetachModule_AUTH
1014 (ParsedHttpHdrs *httpreq)
1015 {
1016         FLUSHStrBuf(httpreq->c_username);
1017         FLUSHStrBuf(httpreq->c_password);
1018         FLUSHStrBuf(httpreq->c_roomname);
1019         FLUSHStrBuf(httpreq->c_language);
1020 }
1021
1022 void
1023 HttpDestroyModule_AUTH
1024 (ParsedHttpHdrs *httpreq)
1025 {
1026         FreeStrBuf(&httpreq->c_username);
1027         FreeStrBuf(&httpreq->c_password);
1028         FreeStrBuf(&httpreq->c_roomname);
1029         FreeStrBuf(&httpreq->c_language);
1030 }
1031
1032 void
1033 InitModule_AUTH
1034 (void)
1035 {
1036         initialize_axdefs();
1037         RegisterHeaderHandler(HKEY("COOKIE"), Header_HandleCookie);
1038         RegisterHeaderHandler(HKEY("AUTHORIZATION"), Header_HandleAuth);
1039
1040         WebcitAddUrlHandler(HKEY(""), "", 0, do_welcome, ANONYMOUS|COOKIEUNNEEDED); /* no url pattern at all? Show login. */
1041         WebcitAddUrlHandler(HKEY("do_welcome"), "", 0, do_welcome, ANONYMOUS|COOKIEUNNEEDED);
1042         WebcitAddUrlHandler(HKEY("login"), "", 0, do_login, ANONYMOUS|COOKIEUNNEEDED);
1043         WebcitAddUrlHandler(HKEY("display_openid_login"), "", 0, _display_openid_login, ANONYMOUS);
1044         WebcitAddUrlHandler(HKEY("openid_login"), "", 0, do_openid_login, ANONYMOUS);
1045         WebcitAddUrlHandler(HKEY("finalize_openid_login"), "", 0, finalize_openid_login, ANONYMOUS);
1046         WebcitAddUrlHandler(HKEY("openid_manual_create"), "", 0, openid_manual_create, ANONYMOUS);
1047         WebcitAddUrlHandler(HKEY("do_logout"), "", 0, do_logout, ANONYMOUS|COOKIEUNNEEDED|FORCE_SESSIONCLOSE);
1048         WebcitAddUrlHandler(HKEY("validate"), "", 0, validate, 0);
1049         WebcitAddUrlHandler(HKEY("display_reg"), "", 0, _display_reg, 0);
1050         WebcitAddUrlHandler(HKEY("display_changepw"), "", 0, display_changepw, 0);
1051         WebcitAddUrlHandler(HKEY("changepw"), "", 0, changepw, 0);
1052         WebcitAddUrlHandler(HKEY("termquit"), "", 0, do_logout, 0);
1053
1054         RegisterConditional(HKEY("COND:AIDE"), 2, ConditionalAide, CTX_NONE);
1055         RegisterConditional(HKEY("COND:LOGGEDIN"), 2, ConditionalIsLoggedIn, CTX_NONE);
1056         RegisterConditional(HKEY("COND:MAY_CREATE_ROOM"), 2,  ConditionalHaveAccessCreateRoom, CTX_NONE);
1057         return ;
1058 }
1059
1060
1061 void
1062 SessionDestroyModule_AUTH
1063 (wcsession *sess)
1064 {
1065         FreeStrBuf(&sess->wc_username);
1066         FreeStrBuf(&sess->wc_fullname);
1067         FreeStrBuf(&sess->wc_password);
1068         FreeStrBuf(&sess->httpauth_pass);
1069         FreeStrBuf(&sess->cs_inet_email);
1070 }