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