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