webcit/auth.c

   1 /*
   2  * WebcitAuth; Handles authentication of users to a Citadel server.
   3  *
   4  * Copyright (c) 1996-2010 by the citadel.org team
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include "webcit.h"
  22 #include "webserver.h"
  23 #include <ctype.h>
  24
  25 extern uint32_t hashlittle( const void *key, size_t length, uint32_t initval);
  26
  27 void display_reg(int during_login);
  28
  29 /*
  30  * Access level definitions.  This is initialized from a function rather than a
  31  * static array so that the strings may be localized.
  32  */
  33 char *axdefs[7];
  34
  35 void initialize_axdefs(void) {
  36
  37         /* an erased user */
  38         axdefs[0] = _("Deleted");
  39
  40         /* a new user */
  41         axdefs[1] = _("New User");
  42
  43         /* a trouble maker */
  44         axdefs[2] = _("Problem User");
  45
  46         /* user with normal privileges */
  47         axdefs[3] = _("Local User");
  48
  49         /* a user that may access network resources */
  50         axdefs[4] = _("Network User");
  51
  52         /* a moderator */
  53         axdefs[5] = _("Preferred User");
  54
  55         /* chief */
  56         axdefs[6] = _("Aide");
  57 }
  58
  59
  60
  61 /*
  62  * Display the login screen
  63  * mesg = the error message if last attempt failed.
  64  */
  65 void display_login(void)
  66 {
  67         begin_burst();
  68         output_headers(1, 0, 0, 0, 1, 0);
  69         do_template("login", NULL);
  70         end_burst();
  71 }
  72
  73
  74
  75
  76 /*
  77  * Display the openid-enabled login screen
  78  * mesg = the error message if last attempt failed.
  79  */
  80 void display_openid_login(char *mesg)
  81 {
  82   begin_burst();
  83   output_headers(1, 0, 0, 0, 1, 0);
  84   do_template("openid_login", NULL);
  85   end_burst();
  86 }
  87
  88
  89
  90
  91 /* Initialize the session
  92  *
  93  * This function needs to get called whenever the session changes from
  94  * not-logged-in to logged-in, either by an explicit login by the user or
  95  * by a timed-out session automatically re-establishing with a little help
  96  * from the browser cookie.  Either way, we need to load access controls and
  97  * preferences from the server.
  98  *
  99  * user                 the username
 100  * pass                 his password
 101  * serv_response        The parameters returned from a Citadel USER or NEWU command
 102  */
 103 void become_logged_in(const StrBuf *user, const StrBuf *pass, StrBuf *serv_response)
 104 {
 105         wcsession *WCC = WC;
 106         StrBuf *Buf;
 107         StrBuf *FloorDiv;
 108
 109         WCC->logged_in = 1;
 110
 111         if (WCC->wc_fullname == NULL)
 112                 WCC->wc_fullname = NewStrBufPlain(NULL, StrLength(serv_response));
 113         StrBufExtract_token(WCC->wc_fullname, serv_response, 0, '|');
 114         StrBufCutLeft(WCC->wc_fullname, 4 );
 115
 116         if (WCC->wc_username == NULL)
 117                 WCC->wc_username = NewStrBufDup(user);
 118         else {
 119                 FlushStrBuf(WCC->wc_username);
 120                 StrBufAppendBuf(WCC->wc_username, user, 0);
 121         }
 122
 123         if (WCC->wc_password == NULL)
 124                 WCC->wc_password = NewStrBufDup(pass);
 125         else {
 126                 FlushStrBuf(WCC->wc_password);
 127                 StrBufAppendBuf(WCC->wc_password, pass, 0);
 128         }
 129
 130         WCC->axlevel = StrBufExtract_int(serv_response, 1, '|');
 131         if (WCC->axlevel >= 6) { /* TODO: make this a define, else it might trick us later */
 132                 WCC->is_aide = 1;
 133         }
 134
 135         load_preferences();
 136
 137         Buf = NewStrBuf();
 138         serv_puts("CHEK");
 139         StrBuf_ServGetln(Buf);
 140         if (GetServerStatus(Buf, NULL) == 2) {
 141                 const char *pch;
 142
 143                 pch = ChrPtr(Buf) + 4;
 144                 /*WCC->new_mail  =*/ StrBufExtractNext_long(Buf, &pch, '|');
 145                 WCC->need_regi = StrBufExtractNext_long(Buf, &pch, '|');
 146                 WCC->need_vali = StrBufExtractNext_long(Buf, &pch, '|');
 147                 if (WCC->cs_inet_email == NULL)
 148                         WCC->cs_inet_email  = NewStrBuf();
 149                 StrBufExtract_NextToken(WCC->cs_inet_email, Buf, &pch, '|');
 150         }
 151         get_preference("floordiv_expanded", &FloorDiv);
 152         WCC->floordiv_expanded = FloorDiv;
 153         FreeStrBuf(&Buf);
 154 }
 155
 156
 157 /*
 158  * Perform authentication using a user name and password
 159  */
 160 void do_login(void)
 161 {
 162         wcsession *WCC = WC;
 163         StrBuf *Buf;
 164         long ret, rc;
 165
 166         if (havebstr("language")) {
 167                 set_selected_language(bstr("language"));
 168                 go_selected_language();
 169         }
 170
 171         if (havebstr("exit_action")) {
 172                 do_logout();
 173                 return;
 174         }
 175         Buf = NewStrBuf();
 176         if (havebstr("login_action")) {
 177                 serv_printf("USER %s", bstr("name"));
 178                 StrBuf_ServGetln(Buf);
 179                 rc = GetServerStatus(Buf, &ret);
 180                 StrBufCutLeft(Buf, 4);
 181                 switch (rc) {
 182                 case 3:
 183                         serv_printf("PASS %s", bstr("pass"));
 184                         StrBuf_ServGetln(Buf);
 185                         if (GetServerStatus(Buf, NULL) == 2) {
 186                                 become_logged_in(sbstr("name"), sbstr("pass"), Buf);
 187                         } else {
 188                                 StrBufCutLeft(Buf, 4);
 189                                 AppendImportantMessage(SKEY(Buf));
 190                                 display_login();
 191                                 FreeStrBuf(&Buf);
 192                                 return;
 193                         }
 194                         break;
 195                 case 5:
 196                         if (ret == 541)
 197                         {
 198                                 AppendImportantMessage(SKEY(Buf));
 199                                 display_main_menu();
 200                                 return;
 201                         }
 202                 default:
 203                         AppendImportantMessage(SKEY(Buf));
 204                         display_login();
 205                         FreeStrBuf(&Buf);
 206                         return;
 207                 }
 208         }
 209         if (havebstr("newuser_action")) {
 210                 if (!havebstr("pass")) {
 211                         AppendImportantMessage(_("Blank passwords are not allowed."), -1);
 212                         display_login();
 213                         FreeStrBuf(&Buf);
 214                         return;
 215                 }
 216                 serv_printf("NEWU %s", bstr("name"));
 217                 StrBuf_ServGetln(Buf);
 218                 if (GetServerStatus(Buf, NULL) == 2) {
 219                         become_logged_in(sbstr("name"), sbstr("pass"), Buf);
 220                         serv_printf("SETP %s", bstr("pass"));
 221                         StrBuf_ServGetln(Buf); /* Don't care? */
 222                 } else {
 223                         StrBufCutLeft(Buf, 4);
 224                         AppendImportantMessage(SKEY(Buf));
 225                         display_login();
 226                         FreeStrBuf(&Buf);
 227                         return;
 228                 }
 229         }
 230         if (WCC->logged_in) {
 231                 if (WCC->need_regi) {
 232                         display_reg(1);
 233                 } else if (WCC->need_vali) {
 234                         validate();
 235                 } else {
 236                         do_welcome();
 237                 }
 238         } else {
 239                 AppendImportantMessage(_("Your password was not accepted."), -1);
 240                 display_login();
 241         }
 242         FreeStrBuf(&Buf);
 243 }
 244
 245 /*
 246  * Try to create an account manually after an OpenID was verified
 247  */
 248 void openid_manual_create(void)
 249 {
 250         StrBuf *Buf;
 251
 252         if (havebstr("exit_action")) {
 253                 do_logout();
 254                 return;
 255         }
 256
 257         if (havebstr("newuser_action")) {
 258                 Buf = NewStrBuf();
 259                 serv_printf("OIDC %s", bstr("name"));
 260                 StrBuf_ServGetln(Buf);
 261                 if (GetServerStatus(Buf, NULL) == 2) {
 262                         StrBuf *gpass;
 263
 264                         gpass = NewStrBuf();
 265                         serv_puts("SETP GENERATE_RANDOM_PASSWORD");
 266                         StrBuf_ServGetln(gpass);
 267                         StrBufCutLeft(gpass, 4);
 268                         become_logged_in(sbstr("name"), gpass, Buf);
 269                         FreeStrBuf(&gpass);
 270                 }
 271                 FreeStrBuf(&Buf);
 272         }
 273
 274         if (WC->logged_in) {
 275                 if (WC->need_regi) {
 276                         display_reg(1);
 277                 } else if (WC->need_vali) {
 278                         validate();
 279                 } else {
 280                         do_welcome();
 281                 }
 282         } else {
 283                 const StrBuf *Buf;
 284
 285                 putbstr("__claimed_id", NewStrBufDup(sbstr("openid_url")));
 286                 Buf = sbstr("name");
 287                 if (StrLength(Buf) > 0)
 288                         putbstr("__username", NewStrBufDup(Buf));
 289                 begin_burst();
 290                 do_template("openid_manual_create", NULL);
 291                 end_burst();
 292         }
 293
 294 }
 295
 296
 297 /*
 298  * Perform authentication using OpenID
 299  * assemble the checkid_setup request and then redirect to the user's identity provider
 300  */
 301 void do_openid_login(void)
 302 {
 303         char buf[4096];
 304
 305         if (havebstr("language")) {
 306                 set_selected_language(bstr("language"));
 307                 go_selected_language();
 308         }
 309
 310         if (havebstr("exit_action")) {
 311                 do_logout();
 312                 return;
 313         }
 314         if (havebstr("login_action")) {
 315                 snprintf(buf, sizeof buf,
 316                         "OIDS %s|%s/finalize_openid_login|%s",
 317                         bstr("openid_url"),
 318                         ChrPtr(site_prefix),
 319                         ChrPtr(site_prefix)
 320                 );
 321
 322                 serv_puts(buf);
 323                 serv_getln(buf, sizeof buf);
 324                 if (buf[0] == '2') {
 325                         lprintf(CTDL_DEBUG, "OpenID server contacted; redirecting to %s\n", &buf[4]);
 326                         http_redirect(&buf[4]);
 327                         return;
 328                 }
 329                 else {
 330                         display_openid_login(&buf[4]);
 331                         return;
 332                 }
 333         }
 334
 335         /* If we get to this point then something failed. */
 336         display_openid_login(_("Your password was not accepted."));
 337 }
 338
 339 /*
 340  * Complete the authentication using OpenID
 341  * This function handles the positive or negative assertion from the user's Identity Provider
 342  */
 343 void finalize_openid_login(void)
 344 {
 345         StrBuf *Buf;
 346         wcsession *WCC = WC;
 347         int already_logged_in = (WCC->logged_in) ;
 348         int linecount = 0;
 349         StrBuf *result = NULL;
 350         StrBuf *username = NULL;
 351         StrBuf *password = NULL;
 352         StrBuf *logged_in_response = NULL;
 353         StrBuf *claimed_id = NULL;
 354
 355         if (havebstr("openid.mode")) {
 356                 if (!strcasecmp(bstr("openid.mode"), "id_res")) {
 357                         Buf = NewStrBuf();
 358                         serv_puts("OIDF");
 359                         StrBuf_ServGetln(Buf);
 360                         if (GetServerStatus(Buf, NULL) == 8) {
 361                                 urlcontent *u;
 362                                 void *U;
 363                                 long HKLen;
 364                                 const char *HKey;
 365                                 HashPos *Cursor;
 366
 367                                 Cursor = GetNewHashPos (WCC->Hdr->urlstrings, 0);
 368                                 while (GetNextHashPos(WCC->Hdr->urlstrings, Cursor, &HKLen, &HKey, &U)) {
 369                                         u = (urlcontent*) U;
 370                                         if (!strncasecmp(u->url_key, "openid.", 7)) {
 371                                                 serv_printf("%s|%s", &u->url_key[7], ChrPtr(u->url_data));
 372                                         }
 373                                 }
 374
 375                                 serv_puts("000");
 376
 377                                 linecount = 0;
 378                                 while (StrBuf_ServGetln(Buf), strcmp(ChrPtr(Buf), "000"))
 379                                 {
 380                                         if (linecount == 0) result = NewStrBufDup(Buf);
 381                                         if (!strcasecmp(ChrPtr(result), "authenticate")) {
 382                                                 if (linecount == 1) {
 383                                                         username = NewStrBufDup(Buf);
 384                                                 }
 385                                                 else if (linecount == 2) {
 386                                                         password = NewStrBufDup(Buf);
 387                                                 }
 388                                                 else if (linecount == 3) {
 389                                                         logged_in_response = NewStrBufDup(Buf);
 390                                                 }
 391                                         }
 392                                         else if (!strcasecmp(ChrPtr(result), "verify_only")) {
 393                                                 if (linecount == 1) {
 394                                                         claimed_id = NewStrBufDup(Buf);
 395                                                 }
 396                                                 if (linecount == 2) {
 397                                                         username = NewStrBufDup(Buf);
 398                                                 }
 399                                         }
 400                                         ++linecount;
 401                                 }
 402                         }
 403                         FreeStrBuf(&Buf);
 404                 }
 405         }
 406
 407         /* If we were already logged in, this was an attempt to associate an OpenID account */
 408         if (already_logged_in) {
 409                 display_openids();
 410                 FreeStrBuf(&result);
 411                 FreeStrBuf(&username);
 412                 FreeStrBuf(&password);
 413                 FreeStrBuf(&claimed_id);
 414                 FreeStrBuf(&logged_in_response);
 415                 return;
 416         }
 417
 418         /* If this operation logged us in, either by connecting with an existing account or by
 419          * auto-creating one using Simple Registration Extension, we're already on our way.
 420          */
 421         if (!strcasecmp(ChrPtr(result), "authenticate")) {
 422                 become_logged_in(username, password, logged_in_response);
 423         }
 424
 425         /* The specified OpenID was verified but the desired user name was either not specified via SRI
 426          * or conflicts with an existing user.  Either way the user will need to specify a new name.
 427          */
 428
 429         else if (!strcasecmp(ChrPtr(result), "verify_only")) {
 430                 putbstr("__claimed_id", claimed_id);
 431                 claimed_id = NULL;
 432                 if (StrLength(username) > 0) {
 433                         putbstr("__username", username);
 434                         username = NULL;
 435                 }
 436                 begin_burst();
 437                 do_template("openid_manual_create", NULL);
 438                 end_burst();
 439         }
 440
 441         /* Did we manage to log in?  If so, continue with the normal flow... */
 442         else if (WC->logged_in) {
 443                 if (WC->need_regi) {
 444                         display_reg(1);
 445                 } else {
 446                         do_welcome();
 447                 }
 448         } else {
 449                 display_openid_login(_("Your password was not accepted."));
 450         }
 451
 452         FreeStrBuf(&result);
 453         FreeStrBuf(&username);
 454         FreeStrBuf(&password);
 455         FreeStrBuf(&claimed_id);
 456         FreeStrBuf(&logged_in_response);
 457 }
 458
 459
 460 /*
 461  * Display a welcome screen to the user.
 462  *
 463  * If this is the first time login, and the web based setup is enabled,
 464  * lead the user through the setup routines
 465  */
 466 void do_welcome(void)
 467 {
 468         StrBuf *Buf;
 469 #ifdef XXX_NOT_FINISHED_YET_XXX
 470         FILE *fp;
 471         int i;
 472
 473         /**
 474          * See if we have to run the first-time setup wizard
 475          */
 476         if (WC->is_aide) {
 477                 if (!setup_wizard) {
 478                         int len;
 479                         sprintf(wizard_filename, "setupwiz.%s.%s",
 480                                 ctdlhost, ctdlport);
 481                         len = strlen(wizard_filename);
 482                         for (i=0; i<len; ++i) {
 483                                 if (    (wizard_filename[i]==' ')
 484                                         || (wizard_filename[i] == '/')
 485                                 ) {
 486                                         wizard_filename[i] = '_';
 487                                 }
 488                         }
 489
 490                         fp = fopen(wizard_filename, "r");
 491                         if (fp != NULL) {
 492                                 fgets(buf, sizeof buf, fp);
 493                                 buf[strlen(buf)-1] = 0;
 494                                 fclose(fp);
 495                                 if (atoi(buf) == serv_info.serv_rev_level) {
 496                                         setup_wizard = 1; /**< already run */
 497                                 }
 498                         }
 499                 }
 500
 501                 if (!setup_wizard) {
 502                         http_redirect("setup_wizard");
 503                 }
 504         }
 505 #endif
 506
 507         /*
 508          * Go to the user's preferred start page
 509          */
 510         if (!get_preference("startpage", &Buf)) {
 511                 Buf = NewStrBuf ();
 512                 StrBufPrintf(Buf, "dotskip?room=_BASEROOM_");
 513                 set_preference("startpage", Buf, 1);
 514         }
 515         if (ChrPtr(Buf)[0] == '/') {
 516                 StrBufCutLeft(Buf, 1);
 517         }
 518         if (StrLength(Buf) == 0) {
 519                 StrBufAppendBufPlain(Buf, "dotgoto?room=_BASEROOM_", -1, 0);
 520         }
 521         lprintf(9, "Redirecting to user's start page: %s\n", ChrPtr(Buf));
 522         http_redirect(ChrPtr(Buf));
 523 }
 524
 525
 526 /*
 527  * Disconnect from the Citadel server, and end this WebCit session
 528  */
 529 void end_webcit_session(void) {
 530
 531         serv_puts("QUIT");
 532         WC->killthis = 1;
 533         /* close() of citadel socket will be done by do_housekeeping() */
 534 }
 535
 536 /*
 537  * execute the logout
 538  */
 539 void do_logout(void)
 540 {
 541         wcsession *WCC = WC;
 542         char buf[SIZ];
 543
 544         FlushStrBuf(WCC->wc_username);
 545         FlushStrBuf(WCC->wc_password);
 546         FlushStrBuf(WCC->CurRoom.name);
 547         FlushStrBuf(WCC->wc_fullname);
 548
 549         /* FIXME: this is to suppress the iconbar displaying, because we aren't
 550            actually logged out yet */
 551         WCC->logged_in = 0;
 552
 553         /** Calling output_headers() this way causes the cookies to be un-set */
 554         output_headers(1, 1, 0, 1, 0, 0);
 555
 556         wc_printf("<div id=\"logout_screen\">");
 557         wc_printf("<div class=\"box\">");
 558         wc_printf("<div class=\"boxlabel\">");
 559         wc_printf(_("Log off"));
 560         wc_printf("</div><div class=\"boxcontent\">");
 561         serv_puts("MESG goodbye");
 562         serv_getln(buf, sizeof buf);
 563
 564         if (WCC->serv_sock >= 0) {
 565                 if (buf[0] == '1') {
 566                         fmout("'CENTER'");
 567                 } else {
 568                         wc_printf("Goodbye\n");
 569                 }
 570         }
 571         else {
 572                 wc_printf(_("This program was unable to connect or stay "
 573                         "connected to the Citadel server.  Please report "
 574                         "this problem to your system administrator.")
 575                 );
 576                 wc_printf("<a href=\"http://www.citadel.org/doku.php/"
 577                         "faq:mastering_your_os:net#netstat\">%s</a>",
 578                         _("Read More..."));
 579         }
 580
 581         wc_printf("<hr /><div class=\"buttons\"> "
 582                 "<span class=\"button_link\"><a href=\".\">");
 583         wc_printf(_("Log in again"));
 584         wc_printf("</a></span>");
 585
 586         /* The "close window" link is commented out because some browsers don't
 587          * allow it to work.
 588          *
 589         wc_printf("&nbsp;&nbsp;&nbsp;<span class=\"button_link\">"
 590                 "<a href=\"javascript:window.close();\">");
 591         wc_printf(_("Close window"));
 592         wc_printf("</a></span>");
 593          */
 594
 595         wc_printf("</div></div></div>\n");
 596         wDumpContent(2);
 597         end_webcit_session();
 598 }
 599
 600
 601 /*
 602  * validate new users
 603  */
 604 void validate(void)
 605 {
 606         char cmd[SIZ];
 607         char user[SIZ];
 608         char buf[SIZ];
 609         int a;
 610
 611         output_headers(1, 1, 2, 0, 0, 0);
 612         wc_printf("<div id=\"banner\">\n");
 613         wc_printf("<h1>");
 614         wc_printf(_("Validate new users"));
 615         wc_printf("</h1>");
 616         wc_printf("</div>\n");
 617
 618         wc_printf("<div id=\"content\" class=\"service\">\n");
 619
 620         /* If the user just submitted a validation, process it... */
 621         safestrncpy(buf, bstr("user"), sizeof buf);
 622         if (!IsEmptyStr(buf)) {
 623                 if (havebstr("axlevel")) {
 624                         serv_printf("VALI %s|%s", buf, bstr("axlevel"));
 625                         serv_getln(buf, sizeof buf);
 626                         if (buf[0] != '2') {
 627                                 wc_printf("<b>%s</b><br>\n", &buf[4]);
 628                         }
 629                 }
 630         }
 631
 632         /* Now see if any more users require validation. */
 633         serv_puts("GNUR");
 634         serv_getln(buf, sizeof buf);
 635         if (buf[0] == '2') {
 636                 wc_printf("<b>");
 637                 wc_printf(_("No users require validation at this time."));
 638                 wc_printf("</b><br>\n");
 639                 wDumpContent(1);
 640                 return;
 641         }
 642         if (buf[0] != '3') {
 643                 wc_printf("<b>%s</b><br>\n", &buf[4]);
 644                 wDumpContent(1);
 645                 return;
 646         }
 647
 648         wc_printf("<table class=\"auth_validate\"><tr><td>\n");
 649         wc_printf("<div id=\"validate\">");
 650
 651         safestrncpy(user, &buf[4], sizeof user);
 652         serv_printf("GREG %s", user);
 653         serv_getln(cmd, sizeof cmd);
 654         if (cmd[0] == '1') {
 655                 a = 0;
 656                 do {
 657                         serv_getln(buf, sizeof buf);
 658                         ++a;
 659                         if (a == 1)
 660                                 wc_printf("#%s<br><H1>%s</H1>",
 661                                         buf, &cmd[4]);
 662                         if (a == 2) {
 663                                 char *pch;
 664                                 int haveChar = 0;
 665                                 int haveNum = 0;
 666                                 int haveOther = 0;
 667                                 int count = 0;
 668                                 pch = buf;
 669                                 while (!IsEmptyStr(pch))
 670                                 {
 671                                         if (isdigit(*pch))
 672                                                 haveNum = 1;
 673                                         else if (isalpha(*pch))
 674                                                 haveChar = 1;
 675                                         else
 676                                                 haveOther = 1;
 677                                         pch ++;
 678                                 }
 679                                 count = pch - buf;
 680                                 if (count > 7)
 681                                         count = 0;
 682                                 switch (count){
 683                                 case 0:
 684                                         pch = _("very weak");
 685                                         break;
 686                                 case 1:
 687                                         pch = _("weak");
 688                                         break;
 689                                 case 2:
 690                                         pch = _("ok");
 691                                         break;
 692                                 case 3:
 693                                 default:
 694                                         pch = _("strong");
 695                                 }
 696
 697                                 wc_printf("PW: %s<br>\n", pch);
 698                         }
 699                         if (a == 3)
 700                                 wc_printf("%s<br>\n", buf);
 701                         if (a == 4)
 702                                 wc_printf("%s<br>\n", buf);
 703                         if (a == 5)
 704                                 wc_printf("%s, ", buf);
 705                         if (a == 6)
 706                                 wc_printf("%s ", buf);
 707                         if (a == 7)
 708                                 wc_printf("%s<br>\n", buf);
 709                         if (a == 8)
 710                                 wc_printf("%s<br>\n", buf);
 711                         if (a == 9)
 712                                 wc_printf(_("Current access level: %d (%s)\n"),
 713                                         atoi(buf), axdefs[atoi(buf)]);
 714                 } while (strcmp(buf, "000"));
 715         } else {
 716                 wc_printf("<H1>%s</H1>%s<br />\n", user, &cmd[4]);
 717         }
 718
 719         wc_printf("<hr />");
 720         wc_printf(_("Select access level for this user:"));
 721         wc_printf("<br />\n");
 722         for (a = 0; a <= 6; ++a) {
 723                 wc_printf("<a href=\"validate?nonce=%d?user=", WC->nonce);
 724                 urlescputs(user);
 725                 wc_printf("&axlevel=%d\">%s</A>&nbsp;&nbsp;&nbsp;\n",
 726                         a, axdefs[a]);
 727         }
 728         wc_printf("<br />\n");
 729
 730         wc_printf("</div>\n");
 731         wc_printf("</td></tr></table>\n");
 732         wDumpContent(1);
 733 }
 734
 735
 736
 737 /*
 738  * Display form for registration.
 739  *
 740  * (Set during_login to 1 if this registration is being performed during
 741  * new user login and will require chaining to the proper screen.)
 742  */
 743 void display_reg(int during_login)
 744 {
 745         folder Room;
 746         StrBuf *Buf;
 747         message_summary *VCMsg = NULL;
 748         wc_mime_attachment *VCAtt = NULL;
 749         long vcard_msgnum;
 750
 751         Buf = NewStrBuf();
 752         memset(&Room, 0, sizeof(folder));
 753         if (goto_config_room(Buf, &Room) != 0) {
 754                 lprintf(9, "display_reg() exiting because goto_config_room() failed\n");
 755                 if (during_login) {
 756                         do_welcome();
 757                 }
 758                 else {
 759                         display_main_menu();
 760                 }
 761                 FreeStrBuf(&Buf);
 762                 FlushFolder(&Room);
 763                 return;
 764         }
 765         FlushFolder(&Room);
 766
 767         FreeStrBuf(&Buf);
 768         vcard_msgnum = locate_user_vcard_in_this_room(&VCMsg, &VCAtt);
 769         if (vcard_msgnum < 0L) {
 770                 lprintf(9, "display_reg() exiting because locate_user_vcard_in_this_room() failed\n");
 771                 if (during_login) {
 772                         do_welcome();
 773                 }
 774                 else {
 775                         display_main_menu();
 776                 }
 777                 return;
 778         }
 779
 780         if (during_login) {
 781                 do_edit_vcard(vcard_msgnum, "1", VCMsg, VCAtt, "do_welcome", USERCONFIGROOM);
 782         }
 783         else {
 784                 StrBuf *ReturnTo;
 785                 ReturnTo = NewStrBufPlain(HKEY("display_main_menu?gotofirst="));
 786                 StrBufAppendBuf(ReturnTo, WC->CurRoom.name, 0);
 787                 do_edit_vcard(vcard_msgnum, "1", VCMsg, VCAtt, ChrPtr(ReturnTo), USERCONFIGROOM);
 788                 FreeStrBuf(&ReturnTo);
 789         }
 790
 791         /* FIXME - don't we have to free VCMsg and VCAtt ?? */
 792 }
 793
 794
 795
 796
 797 /*
 798  * display form for changing your password
 799  */
 800 void display_changepw(void)
 801 {
 802         WCTemplputParams SubTP;
 803         char buf[SIZ];
 804         StrBuf *Buf;
 805         output_headers(1, 1, 1, 0, 0, 0);
 806
 807         Buf = NewStrBufPlain(_("Change your password"), -1);
 808         memset(&SubTP, 0, sizeof(WCTemplputParams));
 809         SubTP.Filter.ContextType = CTX_STRBUF;
 810         SubTP.Context = Buf;
 811         DoTemplate(HKEY("beginbox"), NULL, &SubTP);
 812
 813         FreeStrBuf(&Buf);
 814
 815         if (!IsEmptyStr(WC->ImportantMessage)) {
 816                 wc_printf("<span class=\"errormsg\">"
 817                         "%s</span><br />\n", WC->ImportantMessage);
 818                 safestrncpy(WC->ImportantMessage, "", sizeof WC->ImportantMessage);
 819         }
 820
 821         serv_puts("MESG changepw");
 822         serv_getln(buf, sizeof buf);
 823         if (buf[0] == '1') {
 824                 fmout("CENTER");
 825         }
 826
 827         wc_printf("<form name=\"changepwform\" action=\"changepw\" method=\"post\">\n");
 828         wc_printf("<input type=\"hidden\" name=\"nonce\" value=\"%d\">\n", WC->nonce);
 829         wc_printf("<table class=\"altern\" ");
 830         wc_printf("<tr class=\"even\"><td>");
 831         wc_printf(_("Enter new password:"));
 832         wc_printf("</td><td>");
 833         wc_printf("<input type=\"password\" name=\"newpass1\" value=\"\" maxlength=\"20\"></td></tr>\n");
 834         wc_printf("<tr class=\"odd\"><td>");
 835         wc_printf(_("Enter it again to confirm:"));
 836         wc_printf("</td><td>");
 837         wc_printf("<input type=\"password\" name=\"newpass2\" value=\"\" maxlength=\"20\"></td></tr>\n");
 838         wc_printf("</table>\n");
 839
 840         wc_printf("<div class=\"buttons\">\n");
 841         wc_printf("<input type=\"submit\" name=\"change_action\" value=\"%s\">", _("Change password"));
 842         wc_printf("&nbsp;");
 843         wc_printf("<input type=\"submit\" name=\"cancel_action\" value=\"%s\">\n", _("Cancel"));
 844         wc_printf("</div>\n");
 845         wc_printf("</form>\n");
 846
 847         do_template("endbox", NULL);
 848         wDumpContent(1);
 849 }
 850
 851 /*
 852  * change password
 853  * if passwords match, propagate it to citserver.
 854  */
 855 void changepw(void)
 856 {
 857         char buf[SIZ];
 858         char newpass1[32], newpass2[32];
 859
 860         if (!havebstr("change_action")) {
 861                 safestrncpy(WC->ImportantMessage,
 862                         _("Cancelled.  Password was not changed."),
 863                         sizeof WC->ImportantMessage);
 864                 display_main_menu();
 865                 return;
 866         }
 867
 868         safestrncpy(newpass1, bstr("newpass1"), sizeof newpass1);
 869         safestrncpy(newpass2, bstr("newpass2"), sizeof newpass2);
 870
 871         if (strcasecmp(newpass1, newpass2)) {
 872                 safestrncpy(WC->ImportantMessage,
 873                         _("They don't match.  Password was not changed."),
 874                         sizeof WC->ImportantMessage);
 875                 display_changepw();
 876                 return;
 877         }
 878
 879         if (IsEmptyStr(newpass1)) {
 880                 safestrncpy(WC->ImportantMessage,
 881                         _("Blank passwords are not allowed."),
 882                         sizeof WC->ImportantMessage);
 883                 display_changepw();
 884                 return;
 885         }
 886
 887         serv_printf("SETP %s", newpass1);
 888         serv_getln(buf, sizeof buf);
 889         sprintf(WC->ImportantMessage, "%s", &buf[4]);
 890         if (buf[0] == '2') {
 891                 if (WC->wc_password == NULL)
 892                         WC->wc_password = NewStrBufPlain(buf, -1);
 893                 else {
 894                         FlushStrBuf(WC->wc_password);
 895                         StrBufAppendBufPlain(WC->wc_password,  buf, -1, 0);
 896                 }
 897                 display_main_menu();
 898         }
 899         else {
 900                 display_changepw();
 901         }
 902 }
 903
 904 int ConditionalHaveAccessCreateRoom(StrBuf *Target, WCTemplputParams *TP)
 905 {
 906         StrBuf *Buf;
 907
 908         Buf = NewStrBuf();
 909         serv_puts("CRE8 0");
 910         StrBuf_ServGetln(Buf);
 911
 912         if (GetServerStatus(Buf, NULL) == 2) {
 913                 StrBufCutLeft(Buf, 4);
 914                 AppendImportantMessage(SKEY(Buf));
 915                 FreeStrBuf(&Buf);
 916                 return 0;
 917         }
 918         FreeStrBuf(&Buf);
 919         return 1;
 920 }
 921
 922 int ConditionalAide(StrBuf *Target, WCTemplputParams *TP)
 923 {
 924         wcsession *WCC = WC;
 925         return (WCC != NULL)? (WC->is_aide == 0) : 0;
 926 }
 927
 928 int ConditionalIsLoggedIn(StrBuf *Target, WCTemplputParams *TP)
 929 {
 930         wcsession *WCC = WC;
 931         return (WCC != NULL)? (WCC->logged_in == 0) : 0;
 932 }
 933
 934
 935 void _display_openid_login(void) {
 936         display_openid_login(NULL);
 937 }
 938
 939
 940 void _display_reg(void) {
 941         display_reg(0);
 942 }
 943
 944
 945 void Header_HandleAuth(StrBuf *Line, ParsedHttpHdrs *hdr)
 946 {
 947         if (hdr->HR.got_auth == NO_AUTH) /* don't override cookie auth... */
 948         {
 949                 if (strncasecmp(ChrPtr(Line), "Basic", 5) == 0) {
 950                         StrBufCutLeft(Line, 6);
 951                         StrBufDecodeBase64(Line);
 952                         hdr->HR.plainauth = Line;
 953                         hdr->HR.got_auth = AUTH_BASIC;
 954                 }
 955                 else
 956                         lprintf(1, "Authentication scheme not supported! [%s]\n", ChrPtr(Line));
 957         }
 958 }
 959
 960 void CheckAuthBasic(ParsedHttpHdrs *hdr)
 961 {
 962 /*
 963   todo: enable this if we can have other sessions than authenticated ones.
 964         if (hdr->DontNeedAuth)
 965                 return;
 966 */
 967         StrBufAppendBufPlain(hdr->HR.plainauth, HKEY(":"), 0);
 968         StrBufAppendBuf(hdr->HR.plainauth, hdr->HR.user_agent, 0);
 969         hdr->HR.SessionKey = hashlittle(SKEY(hdr->HR.plainauth), 89479832);
 970 /*
 971         lprintf(1, "CheckAuthBasic: calculated sessionkey %ld\n",
 972                 hdr->HR.SessionKey);
 973 */
 974 }
 975
 976 void GetAuthBasic(ParsedHttpHdrs *hdr)
 977 {
 978         const char *Pos = NULL;
 979         if (hdr->c_username == NULL)
 980                 hdr->c_username = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_USER));
 981         if (hdr->c_password == NULL)
 982                 hdr->c_password = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_PASS));
 983         StrBufExtract_NextToken(hdr->c_username, hdr->HR.plainauth, &Pos, ':');
 984         StrBufExtract_NextToken(hdr->c_password, hdr->HR.plainauth, &Pos, ':');
 985 }
 986
 987 void Header_HandleCookie(StrBuf *Line, ParsedHttpHdrs *hdr)
 988 {
 989         const char *pch;
 990 /*
 991   todo: enable this if we can have other sessions than authenticated ones.
 992         if (hdr->DontNeedAuth)
 993                 return;
 994 */
 995         pch = strstr(ChrPtr(Line), "webcit=");
 996         if (pch == NULL) {
 997                 return;
 998         }
 999
1000         hdr->HR.RawCookie = Line;
1001         StrBufCutLeft(hdr->HR.RawCookie, (pch - ChrPtr(hdr->HR.RawCookie)) + 7);
1002         StrBufDecodeHex(hdr->HR.RawCookie);
1003
1004         cookie_to_stuff(Line, &hdr->HR.desired_session,
1005                         hdr->c_username,
1006                         hdr->c_password,
1007                         hdr->c_roomname,
1008                         hdr->c_language
1009         );
1010         hdr->HR.got_auth = AUTH_COOKIE;
1011 }
1012
1013 void
1014 HttpNewModule_AUTH
1015 (ParsedHttpHdrs *httpreq)
1016 {
1017         httpreq->c_username = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_USER));
1018         httpreq->c_password = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_PASS));
1019         httpreq->c_roomname = NewStrBuf();
1020         httpreq->c_language = NewStrBuf();
1021 }
1022 void
1023 HttpDetachModule_AUTH
1024 (ParsedHttpHdrs *httpreq)
1025 {
1026         FLUSHStrBuf(httpreq->c_username);
1027         FLUSHStrBuf(httpreq->c_password);
1028         FLUSHStrBuf(httpreq->c_roomname);
1029         FLUSHStrBuf(httpreq->c_language);
1030 }
1031
1032 void
1033 HttpDestroyModule_AUTH
1034 (ParsedHttpHdrs *httpreq)
1035 {
1036         FreeStrBuf(&httpreq->c_username);
1037         FreeStrBuf(&httpreq->c_password);
1038         FreeStrBuf(&httpreq->c_roomname);
1039         FreeStrBuf(&httpreq->c_language);
1040 }
1041
1042 void
1043 InitModule_AUTH
1044 (void)
1045 {
1046         initialize_axdefs();
1047         RegisterHeaderHandler(HKEY("COOKIE"), Header_HandleCookie);
1048         RegisterHeaderHandler(HKEY("AUTHORIZATION"), Header_HandleAuth);
1049
1050         WebcitAddUrlHandler(HKEY(""), "", 0, do_welcome, ANONYMOUS|COOKIEUNNEEDED); /* no url pattern at all? Show login. */
1051         WebcitAddUrlHandler(HKEY("do_welcome"), "", 0, do_welcome, ANONYMOUS|COOKIEUNNEEDED);
1052         WebcitAddUrlHandler(HKEY("login"), "", 0, do_login, ANONYMOUS|COOKIEUNNEEDED);
1053         WebcitAddUrlHandler(HKEY("display_openid_login"), "", 0, _display_openid_login, ANONYMOUS);
1054         WebcitAddUrlHandler(HKEY("openid_login"), "", 0, do_openid_login, ANONYMOUS);
1055         WebcitAddUrlHandler(HKEY("finalize_openid_login"), "", 0, finalize_openid_login, ANONYMOUS);
1056         WebcitAddUrlHandler(HKEY("openid_manual_create"), "", 0, openid_manual_create, ANONYMOUS);
1057         WebcitAddUrlHandler(HKEY("do_logout"), "", 0, do_logout, ANONYMOUS|COOKIEUNNEEDED|FORCE_SESSIONCLOSE);
1058         WebcitAddUrlHandler(HKEY("validate"), "", 0, validate, 0);
1059         WebcitAddUrlHandler(HKEY("display_reg"), "", 0, _display_reg, 0);
1060         WebcitAddUrlHandler(HKEY("display_changepw"), "", 0, display_changepw, 0);
1061         WebcitAddUrlHandler(HKEY("changepw"), "", 0, changepw, 0);
1062         WebcitAddUrlHandler(HKEY("termquit"), "", 0, do_logout, 0);
1063
1064         RegisterConditional(HKEY("COND:AIDE"), 2, ConditionalAide, CTX_NONE);
1065         RegisterConditional(HKEY("COND:LOGGEDIN"), 2, ConditionalIsLoggedIn, CTX_NONE);
1066         RegisterConditional(HKEY("COND:MAY_CREATE_ROOM"), 2,  ConditionalHaveAccessCreateRoom, CTX_NONE);
1067         return ;
1068 }
1069
1070
1071 void
1072 SessionDestroyModule_AUTH
1073 (wcsession *sess)
1074 {
1075         FreeStrBuf(&sess->wc_username);
1076         FreeStrBuf(&sess->wc_fullname);
1077         FreeStrBuf(&sess->wc_password);
1078         FreeStrBuf(&sess->httpauth_pass);
1079         FreeStrBuf(&sess->cs_inet_email);
1080 }