webcit/auth.c

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