webcit/auth.c

   1 /*
   2  * These functions handle authentication of users to a Citadel server.
   3  *
   4  * Copyright (c) 1996-2011 by the citadel.org team
   5  *
   6  * This program is open source software.  You can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License as
   8  * published by the Free Software Foundation; either version 3 of the
   9  * License, or (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 /* Initialize the session
  78  *
  79  * This function needs to get called whenever the session changes from
  80  * not-logged-in to logged-in, either by an explicit login by the user or
  81  * by a timed-out session automatically re-establishing with a little help
  82  * from the browser cookie.  Either way, we need to load access controls and
  83  * preferences from the server.
  84  *
  85  * user                 the username
  86  * pass                 his password
  87  * serv_response        The parameters returned from a Citadel USER or NEWU command
  88  */
  89 void become_logged_in(const StrBuf *user, const StrBuf *pass, StrBuf *serv_response)
  90 {
  91         wcsession *WCC = WC;
  92         StrBuf *Buf;
  93         StrBuf *FloorDiv;
  94
  95         WCC->logged_in = 1;
  96
  97         if (WCC->wc_fullname == NULL)
  98                 WCC->wc_fullname = NewStrBufPlain(NULL, StrLength(serv_response));
  99         StrBufExtract_token(WCC->wc_fullname, serv_response, 0, '|');
 100         StrBufCutLeft(WCC->wc_fullname, 4 );
 101
 102         if (WCC->wc_username == NULL)
 103                 WCC->wc_username = NewStrBufDup(user);
 104         else {
 105                 FlushStrBuf(WCC->wc_username);
 106                 StrBufAppendBuf(WCC->wc_username, user, 0);
 107         }
 108
 109         if (WCC->wc_password == NULL)
 110                 WCC->wc_password = NewStrBufDup(pass);
 111         else {
 112                 FlushStrBuf(WCC->wc_password);
 113                 StrBufAppendBuf(WCC->wc_password, pass, 0);
 114         }
 115
 116         WCC->axlevel = StrBufExtract_int(serv_response, 1, '|');
 117         if (WCC->axlevel >= 6) { /* TODO: make this a define, else it might trick us later */
 118                 WCC->is_aide = 1;
 119         }
 120
 121         load_preferences();
 122
 123         Buf = NewStrBuf();
 124         serv_puts("CHEK");
 125         StrBuf_ServGetln(Buf);
 126         if (GetServerStatus(Buf, NULL) == 2) {
 127                 const char *pch;
 128
 129                 pch = ChrPtr(Buf) + 4;
 130                 /*WCC->new_mail  =*/ StrBufExtractNext_long(Buf, &pch, '|');
 131                 WCC->need_regi = StrBufExtractNext_long(Buf, &pch, '|');
 132                 WCC->need_vali = StrBufExtractNext_long(Buf, &pch, '|');
 133                 if (WCC->cs_inet_email == NULL)
 134                         WCC->cs_inet_email  = NewStrBuf();
 135                 StrBufExtract_NextToken(WCC->cs_inet_email, Buf, &pch, '|');
 136         }
 137         get_preference("floordiv_expanded", &FloorDiv);
 138         WCC->floordiv_expanded = FloorDiv;
 139         FreeStrBuf(&Buf);
 140 }
 141
 142
 143 /*
 144  * modal/ajax version of 'login' (username and password)
 145  */
 146 void ajax_login_username_password(void) {
 147         StrBuf *Buf = NewStrBuf();
 148
 149         serv_printf("USER %s", bstr("name"));
 150         StrBuf_ServGetln(Buf);
 151         if (GetServerStatus(Buf, NULL) == 3) {
 152                 serv_printf("PASS %s", bstr("pass"));
 153                 StrBuf_ServGetln(Buf);
 154                 if (GetServerStatus(Buf, NULL) == 2) {
 155                         become_logged_in(sbstr("name"), sbstr("pass"), Buf);
 156                 }
 157         }
 158
 159         /* The client is expecting to read back a citadel protocol response */
 160         wc_printf("%s", ChrPtr(Buf));
 161         FreeStrBuf(&Buf);
 162 }
 163
 164
 165
 166 /*
 167  * modal/ajax version of 'new user' (username and password)
 168  */
 169 void ajax_login_newuser(void) {
 170         StrBuf *Buf = NewStrBuf();
 171
 172         serv_printf("NEWU %s", bstr("name"));
 173         StrBuf_ServGetln(Buf);
 174         if (GetServerStatus(Buf, NULL) == 2) {
 175                 serv_printf("SETP %s", bstr("pass"));
 176                 StrBuf_ServGetln(Buf);
 177                 if (GetServerStatus(Buf, NULL) == 2) {
 178                         become_logged_in(sbstr("name"), sbstr("pass"), Buf);
 179                 }
 180         }
 181
 182         /* The client is expecting to read back a citadel protocol response */
 183         wc_printf("%s", ChrPtr(Buf));
 184         FreeStrBuf(&Buf);
 185 }
 186
 187
 188
 189 /*
 190  * Try to create an account manually after an OpenID was verified
 191  */
 192 void openid_manual_create(void)
 193 {
 194         StrBuf *Buf;
 195
 196         if (havebstr("exit_action")) {
 197                 do_logout();
 198                 return;
 199         }
 200
 201         if (havebstr("newuser_action")) {
 202                 Buf = NewStrBuf();
 203                 serv_printf("OIDC %s", bstr("name"));
 204                 StrBuf_ServGetln(Buf);
 205                 if (GetServerStatus(Buf, NULL) == 2) {
 206                         StrBuf *gpass;
 207
 208                         gpass = NewStrBuf();
 209                         serv_puts("SETP GENERATE_RANDOM_PASSWORD");
 210                         StrBuf_ServGetln(gpass);
 211                         StrBufCutLeft(gpass, 4);
 212                         become_logged_in(sbstr("name"), gpass, Buf);
 213                         FreeStrBuf(&gpass);
 214                 }
 215                 FreeStrBuf(&Buf);
 216         }
 217
 218         if (WC->logged_in) {
 219                 if (WC->need_regi) {
 220                         display_reg(1);
 221                 } else if (WC->need_vali) {
 222                         validate();
 223                 } else {
 224                         do_welcome();
 225                 }
 226         } else {
 227                 const StrBuf *Buf;
 228
 229                 putbstr("__claimed_id", NewStrBufDup(sbstr("openid_url")));
 230                 Buf = sbstr("name");
 231                 if (StrLength(Buf) > 0)
 232                         putbstr("__username", NewStrBufDup(Buf));
 233                 begin_burst();
 234                 do_template("openid_manual_create", NULL);
 235                 end_burst();
 236         }
 237
 238 }
 239
 240
 241 /*
 242  * Perform authentication using OpenID
 243  * assemble the checkid_setup request and then redirect to the user's identity provider
 244  */
 245 void do_openid_login(void)
 246 {
 247         char buf[4096];
 248
 249         snprintf(buf, sizeof buf,
 250                 "OIDS %s|%s/finalize_openid_login|%s",
 251                 bstr("openid_url"),
 252                 ChrPtr(site_prefix),
 253                 ChrPtr(site_prefix)
 254         );
 255
 256         serv_puts(buf);
 257         serv_getln(buf, sizeof buf);
 258         if (buf[0] == '2') {
 259                 syslog(LOG_DEBUG, "OpenID server contacted; redirecting to %s\n", &buf[4]);
 260                 http_redirect(&buf[4]);
 261                 return;
 262         }
 263
 264         begin_burst();
 265         output_headers(1, 0, 0, 0, 1, 0);
 266         wc_printf("<html><body>");
 267         escputs(&buf[4]);
 268         wc_printf("</body></html>");
 269         end_burst();
 270 }
 271
 272
 273 /*
 274  * Complete the authentication using OpenID
 275  * This function handles the positive or negative assertion from the user's Identity Provider
 276  */
 277 void finalize_openid_login(void)
 278 {
 279         StrBuf *Buf;
 280         wcsession *WCC = WC;
 281         int already_logged_in = (WCC->logged_in) ;
 282         int linecount = 0;
 283         StrBuf *result = NULL;
 284         StrBuf *username = NULL;
 285         StrBuf *password = NULL;
 286         StrBuf *logged_in_response = NULL;
 287         StrBuf *claimed_id = NULL;
 288
 289         if (havebstr("openid.mode")) {
 290                 if (!strcasecmp(bstr("openid.mode"), "id_res")) {
 291                         Buf = NewStrBuf();
 292                         serv_puts("OIDF");
 293                         StrBuf_ServGetln(Buf);
 294                         if (GetServerStatus(Buf, NULL) == 8) {
 295                                 urlcontent *u;
 296                                 void *U;
 297                                 long HKLen;
 298                                 const char *HKey;
 299                                 HashPos *Cursor;
 300
 301                                 Cursor = GetNewHashPos (WCC->Hdr->urlstrings, 0);
 302                                 while (GetNextHashPos(WCC->Hdr->urlstrings, Cursor, &HKLen, &HKey, &U)) {
 303                                         u = (urlcontent*) U;
 304                                         if (!strncasecmp(u->url_key, "openid.", 7)) {
 305                                                 serv_printf("%s|%s", &u->url_key[7], ChrPtr(u->url_data));
 306                                         }
 307                                 }
 308
 309                                 serv_puts("000");
 310
 311                                 linecount = 0;
 312                                 while (StrBuf_ServGetln(Buf), strcmp(ChrPtr(Buf), "000"))
 313                                 {
 314                                         if (linecount == 0) result = NewStrBufDup(Buf);
 315                                         if (!strcasecmp(ChrPtr(result), "authenticate")) {
 316                                                 if (linecount == 1) {
 317                                                         username = NewStrBufDup(Buf);
 318                                                 }
 319                                                 else if (linecount == 2) {
 320                                                         password = NewStrBufDup(Buf);
 321                                                 }
 322                                                 else if (linecount == 3) {
 323                                                         logged_in_response = NewStrBufDup(Buf);
 324                                                 }
 325                                         }
 326                                         else if (!strcasecmp(ChrPtr(result), "verify_only")) {
 327                                                 if (linecount == 1) {
 328                                                         claimed_id = NewStrBufDup(Buf);
 329                                                 }
 330                                                 if (linecount == 2) {
 331                                                         username = NewStrBufDup(Buf);
 332                                                 }
 333                                         }
 334                                         ++linecount;
 335                                 }
 336                         }
 337                         FreeStrBuf(&Buf);
 338                 }
 339         }
 340
 341         /* If we were already logged in, this was an attempt to associate an OpenID account
 342         FIXME put this back in
 343         if (already_logged_in) {
 344                 display_openids();
 345                 FreeStrBuf(&result);
 346                 FreeStrBuf(&username);
 347                 FreeStrBuf(&password);
 348                 FreeStrBuf(&claimed_id);
 349                 FreeStrBuf(&logged_in_response);
 350                 return;
 351         }
 352         */
 353
 354         /* If this operation logged us in, either by connecting with an existing account or by
 355          * auto-creating one using Simple Registration Extension, we're already on our way.
 356          */
 357         if (!strcasecmp(ChrPtr(result), "authenticate")) {
 358                 become_logged_in(username, password, logged_in_response);
 359         }
 360
 361         /* The specified OpenID was verified but the desired user name was either not specified via SRI
 362          * or conflicts with an existing user.  Either way the user will need to specify a new name.
 363          */
 364
 365 /*
 366  * FIXME make this work again!!!!
 367  *
 368         else if (!strcasecmp(ChrPtr(result), "verify_only")) {
 369                 putbstr("__claimed_id", claimed_id);
 370                 claimed_id = NULL;
 371                 if (StrLength(username) > 0) {
 372                         putbstr("__username", username);
 373                         username = NULL;
 374                 }
 375                 begin_burst();
 376                 do_template("openid_manual_create", NULL);
 377                 end_burst();
 378         }
 379 */
 380
 381
 382
 383         /* Did we manage to log in?  If so, continue with the normal flow... */
 384         if (WC->logged_in) {
 385                 begin_burst();
 386                 output_headers(1, 0, 0, 0, 1, 0);
 387                 do_template("authpopup_finished", NULL);
 388                 end_burst();
 389
 390                 /* FIXME make this work again.  Maybe put it in authpopup_finished?
 391                 if (WC->need_regi) {
 392                         display_reg(1);
 393                 }
 394                 */
 395
 396         } else {
 397                 begin_burst();
 398                 output_headers(1, 0, 0, 0, 1, 0);
 399                 wc_printf("<html><body>");
 400                 wc_printf(_("An error has occurred."));         /* FIXME do something prettier here */
 401                 wc_printf("</body></html>");
 402                 end_burst();
 403         }
 404
 405         FreeStrBuf(&result);
 406         FreeStrBuf(&username);
 407         FreeStrBuf(&password);
 408         FreeStrBuf(&claimed_id);
 409         FreeStrBuf(&logged_in_response);
 410 }
 411
 412
 413 /*
 414  * Display a welcome screen to the user.
 415  *
 416  * If this is the first time login, and the web based setup is enabled,
 417  * lead the user through the setup routines
 418  */
 419 void do_welcome(void)
 420 {
 421         StrBuf *Buf;
 422 #ifdef XXX_NOT_FINISHED_YET_XXX
 423         FILE *fp;
 424         int i;
 425
 426         /**
 427          * See if we have to run the first-time setup wizard
 428          */
 429         if (WC->is_aide) {
 430                 if (!setup_wizard) {
 431                         int len;
 432                         sprintf(wizard_filename, "setupwiz.%s.%s",
 433                                 ctdlhost, ctdlport);
 434                         len = strlen(wizard_filename);
 435                         for (i=0; i<len; ++i) {
 436                                 if (    (wizard_filename[i]==' ')
 437                                         || (wizard_filename[i] == '/')
 438                                 ) {
 439                                         wizard_filename[i] = '_';
 440                                 }
 441                         }
 442
 443                         fp = fopen(wizard_filename, "r");
 444                         if (fp != NULL) {
 445                                 fgets(buf, sizeof buf, fp);
 446                                 buf[strlen(buf)-1] = 0;
 447                                 fclose(fp);
 448                                 if (atoi(buf) == serv_info.serv_rev_level) {
 449                                         setup_wizard = 1; /**< already run */
 450                                 }
 451                         }
 452                 }
 453
 454                 if (!setup_wizard) {
 455                         http_redirect("setup_wizard");
 456                 }
 457         }
 458 #endif
 459
 460         /*
 461          * Go to the user's preferred start page
 462          */
 463         if (!get_preference("startpage", &Buf)) {
 464                 Buf = NewStrBuf ();
 465                 StrBufPrintf(Buf, "dotskip?room=_BASEROOM_");
 466                 set_preference("startpage", Buf, 1);
 467         }
 468         if (ChrPtr(Buf)[0] == '/') {
 469                 StrBufCutLeft(Buf, 1);
 470         }
 471         if (StrLength(Buf) == 0) {
 472                 StrBufAppendBufPlain(Buf, "dotgoto?room=_BASEROOM_", -1, 0);
 473         }
 474         syslog(9, "Redirecting to user's start page: %s\n", ChrPtr(Buf));
 475         http_redirect(ChrPtr(Buf));
 476 }
 477
 478
 479 /*
 480  * Disconnect from the Citadel server, and end this WebCit session
 481  */
 482 void end_webcit_session(void) {
 483
 484         serv_puts("QUIT");
 485         WC->killthis = 1;
 486         /* close() of citadel socket will be done by do_housekeeping() */
 487 }
 488
 489 /*
 490  * execute the logout
 491  */
 492 void do_logout(void)
 493 {
 494         wcsession *WCC = WC;
 495         char buf[SIZ];
 496
 497         FlushStrBuf(WCC->wc_username);
 498         FlushStrBuf(WCC->wc_password);
 499         FlushStrBuf(WCC->wc_fullname);
 500
 501         serv_puts("LOUT");
 502         serv_getln(buf, sizeof buf);
 503         WCC->logged_in = 0;
 504
 505         if (WC->serv_info->serv_supports_guest) {
 506                 display_default_landing_page();
 507                 return;
 508         }
 509
 510         FlushStrBuf(WCC->CurRoom.name);
 511
 512         /* Calling output_headers() this way causes the cookies to be un-set */
 513         output_headers(1, 1, 0, 1, 0, 0);
 514
 515         wc_printf("<div id=\"logout_screen\">");
 516         wc_printf("<div class=\"box\">");
 517         wc_printf("<div class=\"boxlabel\">");
 518         wc_printf(_("Log off"));
 519         wc_printf("</div><div class=\"boxcontent\">");
 520         serv_puts("MESG goodbye");
 521         serv_getln(buf, sizeof buf);
 522
 523         if (WCC->serv_sock >= 0) {
 524                 if (buf[0] == '1') {
 525                         fmout("'CENTER'");
 526                 } else {
 527                         wc_printf("Goodbye\n");
 528                 }
 529         }
 530         else {
 531                 wc_printf(_("This program was unable to connect or stay "
 532                         "connected to the Citadel server.  Please report "
 533                         "this problem to your system administrator.")
 534                 );
 535                 wc_printf("<a href=\"http://www.citadel.org/doku.php/"
 536                         "faq:mastering_your_os:net#netstat\">%s</a>",
 537                         _("Read More..."));
 538         }
 539
 540         wc_printf("<hr /><div class=\"buttons\"> "
 541                 "<span class=\"button_link\"><a href=\".\">");
 542         wc_printf(_("Log in again"));
 543         wc_printf("</a></span>");
 544         wc_printf("</div></div></div>\n");
 545         wDumpContent(2);
 546         end_webcit_session();
 547 }
 548
 549
 550 /*
 551  * validate new users
 552  */
 553 void validate(void)
 554 {
 555         char cmd[SIZ];
 556         char user[SIZ];
 557         char buf[SIZ];
 558         int a;
 559
 560         output_headers(1, 1, 2, 0, 0, 0);
 561         wc_printf("<div id=\"banner\">\n");
 562         wc_printf("<h1>");
 563         wc_printf(_("Validate new users"));
 564         wc_printf("</h1>");
 565         wc_printf("</div>\n");
 566
 567         wc_printf("<div id=\"content\" class=\"service\">\n");
 568
 569         /* If the user just submitted a validation, process it... */
 570         safestrncpy(buf, bstr("user"), sizeof buf);
 571         if (!IsEmptyStr(buf)) {
 572                 if (havebstr("axlevel")) {
 573                         serv_printf("VALI %s|%s", buf, bstr("axlevel"));
 574                         serv_getln(buf, sizeof buf);
 575                         if (buf[0] != '2') {
 576                                 wc_printf("<b>%s</b><br>\n", &buf[4]);
 577                         }
 578                 }
 579         }
 580
 581         /* Now see if any more users require validation. */
 582         serv_puts("GNUR");
 583         serv_getln(buf, sizeof buf);
 584         if (buf[0] == '2') {
 585                 wc_printf("<b>");
 586                 wc_printf(_("No users require validation at this time."));
 587                 wc_printf("</b><br>\n");
 588                 wDumpContent(1);
 589                 return;
 590         }
 591         if (buf[0] != '3') {
 592                 wc_printf("<b>%s</b><br>\n", &buf[4]);
 593                 wDumpContent(1);
 594                 return;
 595         }
 596
 597         wc_printf("<table class=\"auth_validate\"><tr><td>\n");
 598         wc_printf("<div id=\"validate\">");
 599
 600         safestrncpy(user, &buf[4], sizeof user);
 601         serv_printf("GREG %s", user);
 602         serv_getln(cmd, sizeof cmd);
 603         if (cmd[0] == '1') {
 604                 a = 0;
 605                 do {
 606                         serv_getln(buf, sizeof buf);
 607                         ++a;
 608                         if (a == 1)
 609                                 wc_printf("#%s<br><H1>%s</H1>",
 610                                         buf, &cmd[4]);
 611                         if (a == 2) {
 612                                 char *pch;
 613                                 int haveChar = 0;
 614                                 int haveNum = 0;
 615                                 int haveOther = 0;
 616                                 int count = 0;
 617                                 pch = buf;
 618                                 while (!IsEmptyStr(pch))
 619                                 {
 620                                         if (isdigit(*pch))
 621                                                 haveNum = 1;
 622                                         else if (isalpha(*pch))
 623                                                 haveChar = 1;
 624                                         else
 625                                                 haveOther = 1;
 626                                         pch ++;
 627                                 }
 628                                 count = pch - buf;
 629                                 if (count > 7)
 630                                         count = 0;
 631                                 switch (count){
 632                                 case 0:
 633                                         pch = _("very weak");
 634                                         break;
 635                                 case 1:
 636                                         pch = _("weak");
 637                                         break;
 638                                 case 2:
 639                                         pch = _("ok");
 640                                         break;
 641                                 case 3:
 642                                 default:
 643                                         pch = _("strong");
 644                                 }
 645
 646                                 wc_printf("PW: %s<br>\n", pch);
 647                         }
 648                         if (a == 3)
 649                                 wc_printf("%s<br>\n", buf);
 650                         if (a == 4)
 651                                 wc_printf("%s<br>\n", buf);
 652                         if (a == 5)
 653                                 wc_printf("%s, ", buf);
 654                         if (a == 6)
 655                                 wc_printf("%s ", buf);
 656                         if (a == 7)
 657                                 wc_printf("%s<br>\n", buf);
 658                         if (a == 8)
 659                                 wc_printf("%s<br>\n", buf);
 660                         if (a == 9)
 661                                 wc_printf(_("Current access level: %d (%s)\n"),
 662                                         atoi(buf), axdefs[atoi(buf)]);
 663                 } while (strcmp(buf, "000"));
 664         } else {
 665                 wc_printf("<H1>%s</H1>%s<br>\n", user, &cmd[4]);
 666         }
 667
 668         wc_printf("<hr />");
 669         wc_printf(_("Select access level for this user:"));
 670         wc_printf("<br>\n");
 671         for (a = 0; a <= 6; ++a) {
 672                 wc_printf("<a href=\"validate?nonce=%d?user=", WC->nonce);
 673                 urlescputs(user);
 674                 wc_printf("&axlevel=%d\">%s</A>&nbsp;&nbsp;&nbsp;\n",
 675                         a, axdefs[a]);
 676         }
 677         wc_printf("<br>\n");
 678
 679         wc_printf("</div>\n");
 680         wc_printf("</td></tr></table>\n");
 681         wDumpContent(1);
 682 }
 683
 684
 685
 686 /*
 687  * Display form for registration.
 688  *
 689  * (Set during_login to 1 if this registration is being performed during
 690  * new user login and will require chaining to the proper screen.)
 691  */
 692 void display_reg(int during_login)
 693 {
 694         folder Room;
 695         StrBuf *Buf;
 696         message_summary *VCMsg = NULL;
 697         wc_mime_attachment *VCAtt = NULL;
 698         long vcard_msgnum;
 699
 700         Buf = NewStrBuf();
 701         memset(&Room, 0, sizeof(folder));
 702         if (goto_config_room(Buf, &Room) != 0) {
 703                 syslog(9, "display_reg() exiting because goto_config_room() failed\n");
 704                 if (during_login) {
 705                         do_welcome();
 706                 }
 707                 else {
 708                         display_main_menu();
 709                 }
 710                 FreeStrBuf(&Buf);
 711                 FlushFolder(&Room);
 712                 return;
 713         }
 714         FlushFolder(&Room);
 715
 716         FreeStrBuf(&Buf);
 717         vcard_msgnum = locate_user_vcard_in_this_room(&VCMsg, &VCAtt);
 718         if (vcard_msgnum < 0L) {
 719                 syslog(9, "display_reg() exiting because locate_user_vcard_in_this_room() failed\n");
 720                 if (during_login) {
 721                         do_welcome();
 722                 }
 723                 else {
 724                         display_main_menu();
 725                 }
 726                 return;
 727         }
 728
 729         if (during_login) {
 730                 do_edit_vcard(vcard_msgnum, "1", VCMsg, VCAtt, "do_welcome", USERCONFIGROOM);
 731         }
 732         else {
 733                 StrBuf *ReturnTo;
 734                 ReturnTo = NewStrBufPlain(HKEY("display_main_menu?go="));
 735                 StrBufAppendBuf(ReturnTo, WC->CurRoom.name, 0);
 736                 do_edit_vcard(vcard_msgnum, "1", VCMsg, VCAtt, ChrPtr(ReturnTo), USERCONFIGROOM);
 737                 FreeStrBuf(&ReturnTo);
 738         }
 739
 740         /* FIXME - don't we have to free VCMsg and VCAtt ?? */
 741 }
 742
 743
 744
 745
 746 /*
 747  * display form for changing your password
 748  */
 749 void display_changepw(void)
 750 {
 751         WCTemplputParams SubTP;
 752         char buf[SIZ];
 753         StrBuf *Buf;
 754         output_headers(1, 1, 1, 0, 0, 0);
 755
 756         Buf = NewStrBufPlain(_("Change your password"), -1);
 757         memset(&SubTP, 0, sizeof(WCTemplputParams));
 758         SubTP.Filter.ContextType = CTX_STRBUF;
 759         SubTP.Context = Buf;
 760         DoTemplate(HKEY("beginbox"), NULL, &SubTP);
 761
 762         FreeStrBuf(&Buf);
 763
 764         if (!IsEmptyStr(WC->ImportantMessage)) {
 765                 wc_printf("<span class=\"errormsg\">"
 766                         "%s</span><br>\n", WC->ImportantMessage);
 767                 safestrncpy(WC->ImportantMessage, "", sizeof WC->ImportantMessage);
 768         }
 769
 770         serv_puts("MESG changepw");
 771         serv_getln(buf, sizeof buf);
 772         if (buf[0] == '1') {
 773                 fmout("CENTER");
 774         }
 775
 776         wc_printf("<form name=\"changepwform\" action=\"changepw\" method=\"post\">\n");
 777         wc_printf("<input type=\"hidden\" name=\"nonce\" value=\"%d\">\n", WC->nonce);
 778         wc_printf("<table class=\"altern\" ");
 779         wc_printf("<tr class=\"even\"><td>");
 780         wc_printf(_("Enter new password:"));
 781         wc_printf("</td><td>");
 782         wc_printf("<input type=\"password\" name=\"newpass1\" value=\"\" maxlength=\"20\"></td></tr>\n");
 783         wc_printf("<tr class=\"odd\"><td>");
 784         wc_printf(_("Enter it again to confirm:"));
 785         wc_printf("</td><td>");
 786         wc_printf("<input type=\"password\" name=\"newpass2\" value=\"\" maxlength=\"20\"></td></tr>\n");
 787         wc_printf("</table>\n");
 788
 789         wc_printf("<div class=\"buttons\">\n");
 790         wc_printf("<input type=\"submit\" name=\"change_action\" value=\"%s\">", _("Change password"));
 791         wc_printf("&nbsp;");
 792         wc_printf("<input type=\"submit\" name=\"cancel_action\" value=\"%s\">\n", _("Cancel"));
 793         wc_printf("</div>\n");
 794         wc_printf("</form>\n");
 795
 796         do_template("endbox", NULL);
 797         wDumpContent(1);
 798 }
 799
 800 /*
 801  * change password
 802  * if passwords match, propagate it to citserver.
 803  */
 804 void changepw(void)
 805 {
 806         char buf[SIZ];
 807         char newpass1[32], newpass2[32];
 808
 809         if (!havebstr("change_action")) {
 810                 safestrncpy(WC->ImportantMessage,
 811                         _("Cancelled.  Password was not changed."),
 812                         sizeof WC->ImportantMessage);
 813                 display_main_menu();
 814                 return;
 815         }
 816
 817         safestrncpy(newpass1, bstr("newpass1"), sizeof newpass1);
 818         safestrncpy(newpass2, bstr("newpass2"), sizeof newpass2);
 819
 820         if (strcasecmp(newpass1, newpass2)) {
 821                 safestrncpy(WC->ImportantMessage,
 822                         _("They don't match.  Password was not changed."),
 823                         sizeof WC->ImportantMessage);
 824                 display_changepw();
 825                 return;
 826         }
 827
 828         if (IsEmptyStr(newpass1)) {
 829                 safestrncpy(WC->ImportantMessage,
 830                         _("Blank passwords are not allowed."),
 831                         sizeof WC->ImportantMessage);
 832                 display_changepw();
 833                 return;
 834         }
 835
 836         serv_printf("SETP %s", newpass1);
 837         serv_getln(buf, sizeof buf);
 838         sprintf(WC->ImportantMessage, "%s", &buf[4]);
 839         if (buf[0] == '2') {
 840                 if (WC->wc_password == NULL)
 841                         WC->wc_password = NewStrBufPlain(buf, -1);
 842                 else {
 843                         FlushStrBuf(WC->wc_password);
 844                         StrBufAppendBufPlain(WC->wc_password,  buf, -1, 0);
 845                 }
 846                 display_main_menu();
 847         }
 848         else {
 849                 display_changepw();
 850         }
 851 }
 852
 853 int ConditionalHaveAccessCreateRoom(StrBuf *Target, WCTemplputParams *TP)
 854 {
 855         StrBuf *Buf;
 856
 857         Buf = NewStrBuf();
 858         serv_puts("CRE8 0");
 859         StrBuf_ServGetln(Buf);
 860
 861         if (GetServerStatus(Buf, NULL) == 2) {
 862                 StrBufCutLeft(Buf, 4);
 863                 AppendImportantMessage(SKEY(Buf));
 864                 FreeStrBuf(&Buf);
 865                 return 0;
 866         }
 867         FreeStrBuf(&Buf);
 868         return 1;
 869 }
 870
 871 int ConditionalAide(StrBuf *Target, WCTemplputParams *TP)
 872 {
 873         wcsession *WCC = WC;
 874         return (WCC != NULL) ? ((WCC->logged_in == 0)||(WC->is_aide == 0)) : 0;
 875 }
 876
 877 int ConditionalIsLoggedIn(StrBuf *Target, WCTemplputParams *TP)
 878 {
 879         wcsession *WCC = WC;
 880         return (WCC != NULL) ? (WCC->logged_in == 0) : 0;
 881
 882 }
 883
 884
 885
 886 void _display_reg(void) {
 887         display_reg(0);
 888 }
 889
 890
 891 void Header_HandleAuth(StrBuf *Line, ParsedHttpHdrs *hdr)
 892 {
 893         if (hdr->HR.got_auth == NO_AUTH) /* don't override cookie auth... */
 894         {
 895                 if (strncasecmp(ChrPtr(Line), "Basic", 5) == 0) {
 896                         StrBufCutLeft(Line, 6);
 897                         StrBufDecodeBase64(Line);
 898                         hdr->HR.plainauth = Line;
 899                         hdr->HR.got_auth = AUTH_BASIC;
 900                 }
 901                 else
 902                         syslog(1, "Authentication scheme not supported! [%s]\n", ChrPtr(Line));
 903         }
 904 }
 905
 906 void CheckAuthBasic(ParsedHttpHdrs *hdr)
 907 {
 908 /*
 909   todo: enable this if we can have other sessions than authenticated ones.
 910         if (hdr->DontNeedAuth)
 911                 return;
 912 */
 913         StrBufAppendBufPlain(hdr->HR.plainauth, HKEY(":"), 0);
 914         StrBufAppendBuf(hdr->HR.plainauth, hdr->HR.user_agent, 0);
 915         hdr->HR.SessionKey = hashlittle(SKEY(hdr->HR.plainauth), 89479832);
 916 /*
 917         syslog(1, "CheckAuthBasic: calculated sessionkey %ld\n",
 918                 hdr->HR.SessionKey);
 919 */
 920 }
 921
 922 void GetAuthBasic(ParsedHttpHdrs *hdr)
 923 {
 924         const char *Pos = NULL;
 925         if (hdr->c_username == NULL)
 926                 hdr->c_username = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_USER));
 927         if (hdr->c_password == NULL)
 928                 hdr->c_password = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_PASS));
 929         StrBufExtract_NextToken(hdr->c_username, hdr->HR.plainauth, &Pos, ':');
 930         StrBufExtract_NextToken(hdr->c_password, hdr->HR.plainauth, &Pos, ':');
 931 }
 932
 933 void Header_HandleCookie(StrBuf *Line, ParsedHttpHdrs *hdr)
 934 {
 935         const char *pch;
 936 /*
 937   todo: enable this if we can have other sessions than authenticated ones.
 938         if (hdr->DontNeedAuth)
 939                 return;
 940 */
 941         pch = strstr(ChrPtr(Line), "webcit=");
 942         if (pch == NULL) {
 943                 return;
 944         }
 945
 946         hdr->HR.RawCookie = Line;
 947         StrBufCutLeft(hdr->HR.RawCookie, (pch - ChrPtr(hdr->HR.RawCookie)) + 7);
 948         StrBufDecodeHex(hdr->HR.RawCookie);
 949
 950         cookie_to_stuff(Line, &hdr->HR.desired_session,
 951                         hdr->c_username,
 952                         hdr->c_password,
 953                         hdr->c_roomname,
 954                         hdr->c_language
 955         );
 956         hdr->HR.got_auth = AUTH_COOKIE;
 957 }
 958
 959 void
 960 HttpNewModule_AUTH
 961 (ParsedHttpHdrs *httpreq)
 962 {
 963         httpreq->c_username = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_USER));
 964         httpreq->c_password = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_PASS));
 965         httpreq->c_roomname = NewStrBuf();
 966         httpreq->c_language = NewStrBuf();
 967 }
 968 void
 969 HttpDetachModule_AUTH
 970 (ParsedHttpHdrs *httpreq)
 971 {
 972         FLUSHStrBuf(httpreq->c_username);
 973         FLUSHStrBuf(httpreq->c_password);
 974         FLUSHStrBuf(httpreq->c_roomname);
 975         FLUSHStrBuf(httpreq->c_language);
 976 }
 977
 978 void
 979 HttpDestroyModule_AUTH
 980 (ParsedHttpHdrs *httpreq)
 981 {
 982         FreeStrBuf(&httpreq->c_username);
 983         FreeStrBuf(&httpreq->c_password);
 984         FreeStrBuf(&httpreq->c_roomname);
 985         FreeStrBuf(&httpreq->c_language);
 986 }
 987
 988 void
 989 InitModule_AUTH
 990 (void)
 991 {
 992         initialize_axdefs();
 993         RegisterHeaderHandler(HKEY("COOKIE"), Header_HandleCookie);
 994         RegisterHeaderHandler(HKEY("AUTHORIZATION"), Header_HandleAuth);
 995
 996         /* no url pattern at all? Show login. */
 997         WebcitAddUrlHandler(HKEY(""), "", 0, do_welcome, ANONYMOUS|COOKIEUNNEEDED);
 998
 999         /* some of these will be removed soon */
1000         WebcitAddUrlHandler(HKEY("do_welcome"), "", 0, do_welcome, ANONYMOUS|COOKIEUNNEEDED);
1001         WebcitAddUrlHandler(HKEY("openid_login"), "", 0, do_openid_login, ANONYMOUS);
1002         WebcitAddUrlHandler(HKEY("finalize_openid_login"), "", 0, finalize_openid_login, ANONYMOUS);
1003         WebcitAddUrlHandler(HKEY("openid_manual_create"), "", 0, openid_manual_create, ANONYMOUS);
1004         WebcitAddUrlHandler(HKEY("validate"), "", 0, validate, 0);
1005         WebcitAddUrlHandler(HKEY("do_welcome"), "", 0, do_welcome, 0);
1006         WebcitAddUrlHandler(HKEY("display_reg"), "", 0, _display_reg, 0);
1007         WebcitAddUrlHandler(HKEY("display_changepw"), "", 0, display_changepw, 0);
1008         WebcitAddUrlHandler(HKEY("changepw"), "", 0, changepw, 0);
1009         WebcitAddUrlHandler(HKEY("termquit"), "", 0, do_logout, 0);
1010         WebcitAddUrlHandler(HKEY("do_logout"), "", 0, do_logout, ANONYMOUS|COOKIEUNNEEDED|FORCE_SESSIONCLOSE);
1011         WebcitAddUrlHandler(HKEY("ajax_login_username_password"), "", 0, ajax_login_username_password, AJAX|ANONYMOUS);
1012         WebcitAddUrlHandler(HKEY("ajax_login_newuser"), "", 0, ajax_login_newuser, AJAX|ANONYMOUS);
1013         RegisterConditional(HKEY("COND:AIDE"), 2, ConditionalAide, CTX_NONE);
1014         RegisterConditional(HKEY("COND:LOGGEDIN"), 2, ConditionalIsLoggedIn, CTX_NONE);
1015         RegisterConditional(HKEY("COND:MAY_CREATE_ROOM"), 2,  ConditionalHaveAccessCreateRoom, CTX_NONE);
1016         return;
1017 }
1018
1019
1020 void
1021 SessionDestroyModule_AUTH
1022 (wcsession *sess)
1023 {
1024         FreeStrBuf(&sess->wc_username);
1025         FreeStrBuf(&sess->wc_fullname);
1026         FreeStrBuf(&sess->wc_password);
1027         FreeStrBuf(&sess->httpauth_pass);
1028         FreeStrBuf(&sess->cs_inet_email);
1029 }