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