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 /*
  28  * Access level definitions.  This is initialized from a function rather than a
  29  * static array so that the strings may be localized.
  30  */
  31 char *axdefs[7];
  32
  33 void initialize_axdefs(void) {
  34
  35         /* an erased user */
  36         axdefs[0] = _("Deleted");
  37
  38         /* a new user */
  39         axdefs[1] = _("New User");
  40
  41         /* a trouble maker */
  42         axdefs[2] = _("Problem User");
  43
  44         /* user with normal privileges */
  45         axdefs[3] = _("Local User");
  46
  47         /* a user that may access network resources */
  48         axdefs[4] = _("Network User");
  49
  50         /* a moderator */
  51         axdefs[5] = _("Preferred User");
  52
  53         /* chief */
  54         axdefs[6] = _("Aide");
  55 }
  56
  57
  58
  59 /*
  60  * Display the login screen
  61  * mesg = the error message if last attempt failed.
  62  */
  63 void display_login(void)
  64 {
  65         begin_burst();
  66         output_headers(1, 0, 0, 0, 1, 0);
  67         do_template("login");
  68         end_burst();
  69 }
  70
  71
  72
  73
  74
  75 /* Initialize the session
  76  *
  77  * This function needs to get called whenever the session changes from
  78  * not-logged-in to logged-in, either by an explicit login by the user or
  79  * by a timed-out session automatically re-establishing with a little help
  80  * from the browser cookie.  Either way, we need to load access controls and
  81  * preferences from the server.
  82  *
  83  * user                 the username
  84  * pass                 his password
  85  * serv_response        The parameters returned from a Citadel USER or NEWU command
  86  */
  87 void become_logged_in(const StrBuf *user, const StrBuf *pass, StrBuf *serv_response)
  88 {
  89         wcsession *WCC = WC;
  90         StrBuf *Buf;
  91         StrBuf *FloorDiv;
  92
  93         WCC->logged_in = 1;
  94
  95         if (WCC->wc_fullname == NULL)
  96                 WCC->wc_fullname = NewStrBufPlain(NULL, StrLength(serv_response));
  97         StrBufExtract_token(WCC->wc_fullname, serv_response, 0, '|');
  98         StrBufCutLeft(WCC->wc_fullname, 4 );
  99
 100         if (WCC->wc_username == NULL)
 101                 WCC->wc_username = NewStrBufDup(user);
 102         else {
 103                 FlushStrBuf(WCC->wc_username);
 104                 StrBufAppendBuf(WCC->wc_username, user, 0);
 105         }
 106
 107         if (WCC->wc_password == NULL)
 108                 WCC->wc_password = NewStrBufDup(pass);
 109         else {
 110                 FlushStrBuf(WCC->wc_password);
 111                 StrBufAppendBuf(WCC->wc_password, pass, 0);
 112         }
 113
 114         WCC->axlevel = StrBufExtract_int(serv_response, 1, '|');
 115         if (WCC->axlevel >= 6) {
 116                 WCC->is_aide = 1;
 117         }
 118
 119         load_preferences();
 120
 121         Buf = NewStrBuf();
 122         serv_puts("CHEK");
 123         StrBuf_ServGetln(Buf);
 124         if (GetServerStatus(Buf, NULL) == 2) {
 125                 const char *pch;
 126
 127                 pch = ChrPtr(Buf) + 4;
 128                 /*WCC->new_mail  =*/ StrBufExtractNext_long(Buf, &pch, '|');
 129                 WCC->need_regi = StrBufExtractNext_long(Buf, &pch, '|');
 130                 WCC->need_vali = StrBufExtractNext_long(Buf, &pch, '|');
 131                 if (WCC->cs_inet_email == NULL)
 132                         WCC->cs_inet_email  = NewStrBuf();
 133                 StrBufExtract_NextToken(WCC->cs_inet_email, Buf, &pch, '|');
 134         }
 135         get_preference("floordiv_expanded", &FloorDiv);
 136         WCC->floordiv_expanded = FloorDiv;
 137         FreeStrBuf(&Buf);
 138         FlushRoomlist();
 139 }
 140
 141
 142 /*
 143  * modal/ajax version of 'login' (username and password)
 144  */
 145 void ajax_login_username_password(void) {
 146         StrBuf *Buf = NewStrBuf();
 147
 148         serv_printf("USER %s", bstr("name"));
 149         StrBuf_ServGetln(Buf);
 150         if (GetServerStatus(Buf, NULL) == 3) {
 151                 serv_printf("PASS %s", bstr("pass"));
 152                 StrBuf_ServGetln(Buf);
 153                 if (GetServerStatus(Buf, NULL) == 2) {
 154                         become_logged_in(sbstr("name"), sbstr("pass"), Buf);
 155                 }
 156         }
 157
 158         /* The client is expecting to read back a citadel protocol response */
 159         wc_printf("%s", ChrPtr(Buf));
 160         FreeStrBuf(&Buf);
 161 }
 162
 163
 164
 165 /*
 166  * modal/ajax version of 'new user' (username and password)
 167  */
 168 void ajax_login_newuser(void) {
 169         StrBuf *NBuf = NewStrBuf();
 170         StrBuf *SBuf = NewStrBuf();
 171
 172         serv_printf("NEWU %s", bstr("name"));
 173         StrBuf_ServGetln(NBuf);
 174         if (GetServerStatus(NBuf, NULL) == 2) {
 175                 become_logged_in(sbstr("name"), sbstr("pass"), NBuf);
 176                 serv_printf("SETP %s", bstr("pass"));
 177                 StrBuf_ServGetln(SBuf);
 178         }
 179
 180         /* The client is expecting to read back a citadel protocol response */
 181         wc_printf("%s", ChrPtr(NBuf));
 182         FreeStrBuf(&NBuf);
 183         FreeStrBuf(&SBuf);
 184 }
 185
 186
 187
 188 /*
 189  * Try to create an account manually after an OpenID was verified
 190  */
 191 void openid_manual_create(void)
 192 {
 193         StrBuf *Buf;
 194
 195         /* Did the user change his mind?  Pack up and go home. */
 196         if (havebstr("exit_action")) {
 197                 begin_burst();
 198                 output_headers(1, 0, 0, 0, 1, 0);
 199                 do_template("authpopup_finished");
 200                 end_burst();
 201                 return;
 202         }
 203
 204
 205         /* Ok, let's give this a try.  Can we create the new user? */
 206
 207         Buf = NewStrBuf();
 208         serv_printf("OIDC %s", bstr("name"));
 209         StrBuf_ServGetln(Buf);
 210         if (GetServerStatus(Buf, NULL) == 2) {
 211                 StrBuf *gpass;
 212
 213                 gpass = NewStrBuf();
 214                 serv_puts("SETP GENERATE_RANDOM_PASSWORD");
 215                 StrBuf_ServGetln(gpass);
 216                 StrBufCutLeft(gpass, 4);
 217                 become_logged_in(sbstr("name"), gpass, Buf);
 218                 FreeStrBuf(&gpass);
 219         }
 220         FreeStrBuf(&Buf);
 221
 222         /* Did we manage to log in?  If so, continue with the normal flow... */
 223         if (WC->logged_in) {
 224                 if (WC->logged_in) {
 225                         begin_burst();
 226                         output_headers(1, 0, 0, 0, 1, 0);
 227                         do_template("authpopup_finished");
 228                         end_burst();
 229                 }
 230         } else {
 231                 /* Still no good!  Go back to teh dialog to select a username */
 232                 const StrBuf *Buf;
 233                 putbstr("__claimed_id", NewStrBufDup(sbstr("openid_url")));
 234                 Buf = sbstr("name");
 235                 if (StrLength(Buf) > 0)
 236                         putbstr("__username", NewStrBufDup(Buf));
 237                 begin_burst();
 238                 output_headers(1, 0, 0, 0, 1, 0);
 239                 wc_printf("<html><body>");
 240                 do_template("openid_manual_create");
 241                 wc_printf("</body></html>");
 242                 end_burst();
 243         }
 244
 245 }
 246
 247
 248 /*
 249  * Perform authentication using OpenID
 250  * assemble the checkid_setup request and then redirect to the user's identity provider
 251  */
 252 void do_openid_login(void)
 253 {
 254         char buf[4096];
 255
 256         snprintf(buf, sizeof buf,
 257                 "OIDS %s|%s/finalize_openid_login|%s",
 258                 bstr("openid_url"),
 259                 ChrPtr(site_prefix),
 260                 ChrPtr(site_prefix)
 261         );
 262
 263         serv_puts(buf);
 264         serv_getln(buf, sizeof buf);
 265         if (buf[0] == '2') {
 266                 syslog(LOG_DEBUG, "OpenID server contacted; redirecting to %s\n", &buf[4]);
 267                 http_redirect(&buf[4]);
 268                 return;
 269         }
 270
 271         begin_burst();
 272         output_headers(1, 0, 0, 0, 1, 0);
 273         wc_printf("<html><body>");
 274         escputs(&buf[4]);
 275         wc_printf("</body></html>");
 276         end_burst();
 277 }
 278
 279
 280 /*
 281  * Complete the authentication using OpenID
 282  * This function handles the positive or negative assertion from the user's Identity Provider
 283  */
 284 void finalize_openid_login(void)
 285 {
 286         StrBuf *Buf;
 287         wcsession *WCC = WC;
 288         int linecount = 0;
 289         StrBuf *result = NULL;
 290         StrBuf *username = NULL;
 291         StrBuf *password = NULL;
 292         StrBuf *logged_in_response = NULL;
 293         StrBuf *claimed_id = NULL;
 294
 295         if (havebstr("openid.mode")) {
 296                 if (!strcasecmp(bstr("openid.mode"), "id_res")) {
 297                         Buf = NewStrBuf();
 298                         serv_puts("OIDF");
 299                         StrBuf_ServGetln(Buf);
 300                         if (GetServerStatus(Buf, NULL) == 8) {
 301                                 urlcontent *u;
 302                                 void *U;
 303                                 long HKLen;
 304                                 const char *HKey;
 305                                 HashPos *Cursor;
 306                                 int len;
 307
 308                                 Cursor = GetNewHashPos (WCC->Hdr->urlstrings, 0);
 309                                 while (GetNextHashPos(WCC->Hdr->urlstrings, Cursor, &HKLen, &HKey, &U)) {
 310                                         u = (urlcontent*) U;
 311                                         if (!strncasecmp(u->url_key, "openid.", 7)) {
 312                                                 serv_printf("%s|%s", &u->url_key[7], ChrPtr(u->url_data));
 313                                         }
 314                                 }
 315
 316                                 serv_puts("000");
 317
 318                                 linecount = 0;
 319                                 while (len = StrBuf_ServGetln(Buf),
 320                                        ((len >= 0) &&
 321                                         ((len != 3) || strcmp(ChrPtr(Buf), "000") )))
 322                                 {
 323                                         if (linecount == 0) result = NewStrBufDup(Buf);
 324                                         if (!strcasecmp(ChrPtr(result), "authenticate")) {
 325                                                 if (linecount == 1) {
 326                                                         username = NewStrBufDup(Buf);
 327                                                 }
 328                                                 else if (linecount == 2) {
 329                                                         password = NewStrBufDup(Buf);
 330                                                 }
 331                                                 else if (linecount == 3) {
 332                                                         logged_in_response = NewStrBufDup(Buf);
 333                                                 }
 334                                         }
 335                                         else if (!strcasecmp(ChrPtr(result), "verify_only")) {
 336                                                 if (linecount == 1) {
 337                                                         claimed_id = NewStrBufDup(Buf);
 338                                                 }
 339                                                 if (linecount == 2) {
 340                                                         username = NewStrBufDup(Buf);
 341                                                 }
 342                                         }
 343                                         ++linecount;
 344                                 }
 345                         }
 346                         FreeStrBuf(&Buf);
 347                 }
 348         }
 349
 350         /*
 351          * Is this an attempt to associate a new OpenID with an account that is already logged in?
 352          */
 353         if ( (WCC->logged_in) && (havebstr("attach_existing")) ) {
 354                 display_openids();
 355         }
 356
 357         /* If this operation logged us in, either by connecting with an existing account or by
 358          * auto-creating one using Simple Registration Extension, we're already on our way.
 359          */
 360         else if (!strcasecmp(ChrPtr(result), "authenticate")) {
 361                 become_logged_in(username, password, logged_in_response);
 362
 363                 /* Did we manage to log in?  If so, continue with the normal flow... */
 364                 if (WC->logged_in) {
 365                         begin_burst();
 366                         output_headers(1, 0, 0, 0, 1, 0);
 367                         do_template("authpopup_finished");
 368                         end_burst();
 369                 } else {
 370                         begin_burst();
 371                         output_headers(1, 0, 0, 0, 1, 0);
 372                         wc_printf("<html><body>");
 373                         wc_printf(_("An error has occurred."));
 374                         wc_printf("</body></html>");
 375                         end_burst();
 376                 }
 377         }
 378
 379         /* The specified OpenID was verified but the desired user name was either not specified via SRE
 380          * or conflicts with an existing user.  Either way the user will need to specify a new name.
 381          */
 382         else if (!strcasecmp(ChrPtr(result), "verify_only")) {
 383                 putbstr("__claimed_id", claimed_id);
 384                 claimed_id = NULL;
 385                 if (StrLength(username) > 0) {
 386                         putbstr("__username", username);
 387                         username = NULL;
 388                 }
 389                 begin_burst();
 390                 output_headers(1, 0, 0, 0, 1, 0);
 391                 wc_printf("<html><body>");
 392                 do_template("openid_manual_create");
 393                 wc_printf("</body></html>");
 394                 end_burst();
 395         }
 396
 397         /* Something went VERY wrong if we get to this point */
 398         else {
 399                 syslog(1, "finalize_openid_login() failed to do anything.  This is a code problem.\n");
 400                 begin_burst();
 401                 output_headers(1, 0, 0, 0, 1, 0);
 402                 wc_printf("<html><body>");
 403                 wc_printf(_("An error has occurred."));
 404                 wc_printf("</body></html>");
 405                 end_burst();
 406         }
 407
 408         FreeStrBuf(&result);
 409         FreeStrBuf(&username);
 410         FreeStrBuf(&password);
 411         FreeStrBuf(&claimed_id);
 412         FreeStrBuf(&logged_in_response);
 413 }
 414
 415
 416 /*
 417  * Display a welcome screen to the user.
 418  *
 419  * If this is the first time login, and the web based setup is enabled,
 420  * lead the user through the setup routines
 421  */
 422 void do_welcome(void)
 423 {
 424         StrBuf *Buf;
 425 #ifdef XXX_NOT_FINISHED_YET_XXX
 426         FILE *fp;
 427         int i;
 428
 429         /**
 430          * See if we have to run the first-time setup wizard
 431          */
 432         if (WC->is_aide) {
 433                 if (!setup_wizard) {
 434                         int len;
 435                         sprintf(wizard_filename, "setupwiz.%s.%s",
 436                                 ctdlhost, ctdlport);
 437                         len = strlen(wizard_filename);
 438                         for (i=0; i<len; ++i) {
 439                                 if (    (wizard_filename[i]==' ')
 440                                         || (wizard_filename[i] == '/')
 441                                 ) {
 442                                         wizard_filename[i] = '_';
 443                                 }
 444                         }
 445
 446                         fp = fopen(wizard_filename, "r");
 447                         if (fp != NULL) {
 448                                 fgets(buf, sizeof buf, fp);
 449                                 buf[strlen(buf)-1] = 0;
 450                                 fclose(fp);
 451                                 if (atoi(buf) == serv_info.serv_rev_level) {
 452                                         setup_wizard = 1;       /* already run */
 453                                 }
 454                         }
 455                 }
 456
 457                 if (!setup_wizard) {
 458                         http_redirect("setup_wizard");
 459                 }
 460         }
 461 #endif
 462
 463         /*
 464          * Go to the user's preferred start page
 465          */
 466         if (!get_preference("startpage", &Buf)) {
 467                 Buf = NewStrBuf ();
 468                 StrBufPrintf(Buf, "dotskip?room=_BASEROOM_");
 469                 set_preference("startpage", Buf, 1);
 470         }
 471         if (ChrPtr(Buf)[0] == '/') {
 472                 StrBufCutLeft(Buf, 1);
 473         }
 474         if (StrLength(Buf) == 0) {
 475                 StrBufAppendBufPlain(Buf, "dotgoto?room=_BASEROOM_", -1, 0);
 476         }
 477         syslog(9, "Redirecting to user's start page: %s\n", ChrPtr(Buf));
 478         http_redirect(ChrPtr(Buf));
 479 }
 480
 481
 482 /*
 483  * Disconnect from the Citadel server, and end this WebCit session
 484  */
 485 void end_webcit_session(void) {
 486
 487         serv_puts("QUIT");
 488         WC->killthis = 1;
 489         /* close() of citadel socket will be done by do_housekeeping() */
 490 }
 491
 492
 493 /*
 494  * Log out the session with the Citadel server
 495  */
 496 void do_logout(void)
 497 {
 498         wcsession *WCC = WC;
 499         char buf[SIZ];
 500
 501         FlushStrBuf(WCC->wc_username);
 502         FlushStrBuf(WCC->wc_password);
 503         FlushStrBuf(WCC->wc_fullname);
 504         FlushRoomlist();
 505
 506         serv_puts("LOUT");
 507         serv_getln(buf, sizeof buf);
 508         WCC->logged_in = 0;
 509
 510         if (WC->serv_info->serv_supports_guest) {
 511                 display_default_landing_page();
 512                 return;
 513         }
 514
 515         FlushStrBuf(WCC->CurRoom.name);
 516
 517         /* Calling output_headers() this way causes the cookies to be un-set */
 518         output_headers(1, 1, 0, 1, 0, 0);
 519
 520         wc_printf("<div id=\"logout_screen\">");
 521         wc_printf("<div class=\"box\">");
 522         wc_printf("<div class=\"boxlabel\">");
 523         wc_printf(_("Log off"));
 524         wc_printf("</div><div class=\"boxcontent\">");
 525         serv_puts("MESG goodbye");
 526         serv_getln(buf, sizeof buf);
 527
 528         if (WCC->serv_sock >= 0) {
 529                 if (buf[0] == '1') {
 530                         fmout("'CENTER'");
 531                 } else {
 532                         wc_printf("Goodbye\n");
 533                 }
 534         }
 535         else {
 536                 wc_printf(_("This program was unable to connect or stay "
 537                         "connected to the Citadel server.  Please report "
 538                         "this problem to your system administrator.")
 539                 );
 540                 wc_printf("<a href=\"http://www.citadel.org/doku.php/"
 541                         "faq:mastering_your_os:net#netstat\">%s</a>",
 542                         _("Read More..."));
 543         }
 544
 545         wc_printf("<hr /><div class=\"buttons\"> "
 546                 "<span class=\"button_link\"><a href=\".\">");
 547         wc_printf(_("Log in again"));
 548         wc_printf("</a></span>");
 549         wc_printf("</div></div></div>\n");
 550         wDumpContent(2);
 551         end_webcit_session();
 552 }
 553
 554
 555 /*
 556  * validate new users
 557  */
 558 void validate(void)
 559 {
 560         char cmd[SIZ];
 561         char user[SIZ];
 562         char buf[SIZ];
 563         int a;
 564
 565         output_headers(1, 1, 1, 0, 0, 0);
 566
 567         do_template("beginbox_1");
 568         StrBufAppendBufPlain(WC->WBuf, _("Validate new users"), -1, 0);
 569         do_template("beginbox_2");
 570
 571         /* If the user just submitted a validation, process it... */
 572         safestrncpy(buf, bstr("user"), sizeof buf);
 573         if (!IsEmptyStr(buf)) {
 574                 if (havebstr("axlevel")) {
 575                         serv_printf("VALI %s|%s", buf, bstr("axlevel"));
 576                         serv_getln(buf, sizeof buf);
 577                         if (buf[0] != '2') {
 578                                 wc_printf("<b>%s</b><br>\n", &buf[4]);
 579                         }
 580                 }
 581         }
 582
 583         /* Now see if any more users require validation. */
 584         serv_puts("GNUR");
 585         serv_getln(buf, sizeof buf);
 586         if (buf[0] == '2') {
 587                 wc_printf("<b>");
 588                 wc_printf(_("No users require validation at this time."));
 589                 wc_printf("</b><br>\n");
 590                 wDumpContent(1);
 591                 return;
 592         }
 593         if (buf[0] != '3') {
 594                 wc_printf("<b>%s</b><br>\n", &buf[4]);
 595                 wDumpContent(1);
 596                 return;
 597         }
 598
 599         wc_printf("<table class=\"auth_validate\"><tr><td>\n");
 600         wc_printf("<div id=\"validate\">");
 601
 602         safestrncpy(user, &buf[4], sizeof user);
 603         serv_printf("GREG %s", user);
 604         serv_getln(cmd, sizeof cmd);
 605         if (cmd[0] == '1') {
 606                 a = 0;
 607                 do {
 608                         serv_getln(buf, sizeof buf);
 609                         ++a;
 610                         if (a == 1)
 611                                 wc_printf("#%s<br><H1>%s</H1>",
 612                                         buf, &cmd[4]);
 613                         if (a == 2) {
 614                                 char *pch;
 615                                 int haveChar = 0;
 616                                 int haveNum = 0;
 617                                 int haveOther = 0;
 618                                 int count = 0;
 619                                 pch = buf;
 620                                 while (!IsEmptyStr(pch))
 621                                 {
 622                                         if (isdigit(*pch))
 623                                                 haveNum = 1;
 624                                         else if (isalpha(*pch))
 625                                                 haveChar = 1;
 626                                         else
 627                                                 haveOther = 1;
 628                                         pch ++;
 629                                 }
 630                                 count = pch - buf;
 631                                 if (count > 7)
 632                                         count = 0;
 633                                 switch (count){
 634                                 case 0:
 635                                         pch = _("very weak");
 636                                         break;
 637                                 case 1:
 638                                         pch = _("weak");
 639                                         break;
 640                                 case 2:
 641                                         pch = _("ok");
 642                                         break;
 643                                 case 3:
 644                                 default:
 645                                         pch = _("strong");
 646                                 }
 647
 648                                 wc_printf("PW: %s<br>\n", pch);
 649                         }
 650                         if (a == 3)
 651                                 wc_printf("%s<br>\n", buf);
 652                         if (a == 4)
 653                                 wc_printf("%s<br>\n", buf);
 654                         if (a == 5)
 655                                 wc_printf("%s, ", buf);
 656                         if (a == 6)
 657                                 wc_printf("%s ", buf);
 658                         if (a == 7)
 659                                 wc_printf("%s<br>\n", buf);
 660                         if (a == 8)
 661                                 wc_printf("%s<br>\n", buf);
 662                         if (a == 9)
 663                                 wc_printf(_("Current access level: %d (%s)\n"),
 664                                         atoi(buf), axdefs[atoi(buf)]);
 665                 } while (strcmp(buf, "000"));
 666         } else {
 667                 wc_printf("<H1>%s</H1>%s<br>\n", user, &cmd[4]);
 668         }
 669
 670         wc_printf("<hr />");
 671         wc_printf(_("Select access level for this user:"));
 672         wc_printf("<br>\n");
 673         for (a = 0; a <= 6; ++a) {
 674                 wc_printf("<a href=\"validate?nonce=%d?user=", WC->nonce);
 675                 urlescputs(user);
 676                 wc_printf("&axlevel=%d\">%s</A>&nbsp;&nbsp;&nbsp;\n",
 677                         a, axdefs[a]);
 678         }
 679         wc_printf("<br>\n");
 680
 681         wc_printf("</div>\n");
 682         wc_printf("</td></tr></table>\n");
 683         do_template("endbox");
 684         wDumpContent(1);
 685 }
 686
 687
 688 /*
 689  * Display form for registration.
 690  *
 691  * (Set during_login to 1 if this registration is being performed during
 692  * new user login and will require chaining to the proper screen.)
 693  */
 694 void display_reg(int during_login)
 695 {
 696         folder Room;
 697         StrBuf *Buf;
 698         message_summary *VCMsg = NULL;
 699         wc_mime_attachment *VCAtt = NULL;
 700         long vcard_msgnum;
 701
 702         Buf = NewStrBuf();
 703         memset(&Room, 0, sizeof(folder));
 704         if (goto_config_room(Buf, &Room) != 0) {
 705                 syslog(9, "display_reg() exiting because goto_config_room() failed\n");
 706                 if (during_login) {
 707                         pop_destination();
 708                 }
 709                 else {
 710                         display_main_menu();
 711                 }
 712                 FreeStrBuf(&Buf);
 713                 FlushFolder(&Room);
 714                 return;
 715         }
 716         FlushFolder(&Room);
 717
 718         FreeStrBuf(&Buf);
 719         vcard_msgnum = locate_user_vcard_in_this_room(&VCMsg, &VCAtt);
 720         if (vcard_msgnum < 0L) {
 721                 syslog(9, "display_reg() exiting because locate_user_vcard_in_this_room() failed\n");
 722                 if (during_login) {
 723                         pop_destination();
 724                 }
 725                 else {
 726                         display_main_menu();
 727                 }
 728                 return;
 729         }
 730
 731         if (during_login) {
 732                 do_edit_vcard(vcard_msgnum, "1", VCMsg, VCAtt, "pop", USERCONFIGROOM);
 733         }
 734         else {
 735                 StrBuf *ReturnTo;
 736                 ReturnTo = NewStrBufPlain(HKEY("display_main_menu?go="));
 737                 StrBufAppendBuf(ReturnTo, WC->CurRoom.name, 0);
 738                 do_edit_vcard(vcard_msgnum, "1", VCMsg, VCAtt, ChrPtr(ReturnTo), USERCONFIGROOM);
 739                 FreeStrBuf(&ReturnTo);
 740         }
 741
 742 }
 743
 744
 745 /*
 746  * display form for changing your password
 747  */
 748 void display_changepw(void)
 749 {
 750         WCTemplputParams SubTP;
 751         char buf[SIZ];
 752         StrBuf *Buf;
 753         output_headers(1, 1, 1, 0, 0, 0);
 754
 755         Buf = NewStrBufPlain(_("Change your password"), -1);
 756         memset(&SubTP, 0, sizeof(WCTemplputParams));
 757         SubTP.Filter.ContextType = CTX_STRBUF;
 758         SubTP.Context = Buf;
 759         DoTemplate(HKEY("beginbox"), NULL, &SubTP);
 760
 761         FreeStrBuf(&Buf);
 762
 763         if (!IsEmptyStr(WC->ImportantMessage)) {
 764                 wc_printf("<span class=\"errormsg\">"
 765                         "%s</span><br>\n", WC->ImportantMessage);
 766                 safestrncpy(WC->ImportantMessage, "", sizeof WC->ImportantMessage);
 767         }
 768
 769         serv_puts("MESG changepw");
 770         serv_getln(buf, sizeof buf);
 771         if (buf[0] == '1') {
 772                 fmout("CENTER");
 773         }
 774
 775         wc_printf("<form name=\"changepwform\" action=\"changepw\" method=\"post\">\n");
 776         wc_printf("<input type=\"hidden\" name=\"nonce\" value=\"%d\">\n", WC->nonce);
 777         wc_printf("<table class=\"altern\" ");
 778         wc_printf("<tr class=\"even\"><td>");
 779         wc_printf(_("Enter new password:"));
 780         wc_printf("</td><td>");
 781         wc_printf("<input type=\"password\" name=\"newpass1\" value=\"\" maxlength=\"20\"></td></tr>\n");
 782         wc_printf("<tr class=\"odd\"><td>");
 783         wc_printf(_("Enter it again to confirm:"));
 784         wc_printf("</td><td>");
 785         wc_printf("<input type=\"password\" name=\"newpass2\" value=\"\" maxlength=\"20\"></td></tr>\n");
 786         wc_printf("</table>\n");
 787
 788         wc_printf("<div class=\"buttons\">\n");
 789         wc_printf("<input type=\"submit\" name=\"change_action\" value=\"%s\">", _("Change password"));
 790         wc_printf("&nbsp;");
 791         wc_printf("<input type=\"submit\" name=\"cancel_action\" value=\"%s\">\n", _("Cancel"));
 792         wc_printf("</div>\n");
 793         wc_printf("</form>\n");
 794
 795         do_template("endbox");
 796         wDumpContent(1);
 797 }
 798
 799 /*
 800  * change password
 801  * if passwords match, propagate it to citserver.
 802  */
 803 void changepw(void)
 804 {
 805         char buf[SIZ];
 806         char newpass1[32], newpass2[32];
 807
 808         if (!havebstr("change_action")) {
 809                 safestrncpy(WC->ImportantMessage,
 810                         _("Cancelled.  Password was not changed."),
 811                         sizeof WC->ImportantMessage);
 812                 display_main_menu();
 813                 return;
 814         }
 815
 816         safestrncpy(newpass1, bstr("newpass1"), sizeof newpass1);
 817         safestrncpy(newpass2, bstr("newpass2"), sizeof newpass2);
 818
 819         if (strcasecmp(newpass1, newpass2)) {
 820                 safestrncpy(WC->ImportantMessage,
 821                         _("They don't match.  Password was not changed."),
 822                         sizeof WC->ImportantMessage);
 823                 display_changepw();
 824                 return;
 825         }
 826
 827         if (IsEmptyStr(newpass1)) {
 828                 safestrncpy(WC->ImportantMessage,
 829                         _("Blank passwords are not allowed."),
 830                         sizeof WC->ImportantMessage);
 831                 display_changepw();
 832                 return;
 833         }
 834
 835         serv_printf("SETP %s", newpass1);
 836         serv_getln(buf, sizeof buf);
 837         sprintf(WC->ImportantMessage, "%s", &buf[4]);
 838         if (buf[0] == '2') {
 839                 if (WC->wc_password == NULL)
 840                         WC->wc_password = NewStrBufPlain(buf, -1);
 841                 else {
 842                         FlushStrBuf(WC->wc_password);
 843                         StrBufAppendBufPlain(WC->wc_password,  buf, -1, 0);
 844                 }
 845                 display_main_menu();
 846         }
 847         else {
 848                 display_changepw();
 849         }
 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
 872 int ConditionalAide(StrBuf *Target, WCTemplputParams *TP)
 873 {
 874         wcsession *WCC = WC;
 875         return (WCC != NULL) ? ((WCC->logged_in == 0)||(WC->is_aide == 0)) : 0;
 876 }
 877
 878
 879 int ConditionalIsLoggedIn(StrBuf *Target, WCTemplputParams *TP)
 880 {
 881         wcsession *WCC = WC;
 882         return (WCC != NULL) ? (WCC->logged_in == 0) : 0;
 883
 884 }
 885
 886
 887 /*
 888  * toggle the session over to a different language
 889  */
 890 void switch_language(void) {
 891         set_selected_language(bstr("lang"));
 892         pop_destination();
 893 }
 894
 895
 896 void _display_reg(void) {
 897         display_reg(0);
 898 }
 899
 900
 901 void Header_HandleAuth(StrBuf *Line, ParsedHttpHdrs *hdr)
 902 {
 903         if (hdr->HR.got_auth == NO_AUTH) /* don't override cookie auth... */
 904         {
 905                 if (strncasecmp(ChrPtr(Line), "Basic", 5) == 0) {
 906                         StrBufCutLeft(Line, 6);
 907                         StrBufDecodeBase64(Line);
 908                         hdr->HR.plainauth = Line;
 909                         hdr->HR.got_auth = AUTH_BASIC;
 910                 }
 911                 else
 912                         syslog(1, "Authentication scheme not supported! [%s]\n", ChrPtr(Line));
 913         }
 914 }
 915
 916
 917 void CheckAuthBasic(ParsedHttpHdrs *hdr)
 918 {
 919 /*
 920   todo: enable this if we can have other sessions than authenticated ones.
 921         if (hdr->DontNeedAuth)
 922                 return;
 923 */
 924         StrBufAppendBufPlain(hdr->HR.plainauth, HKEY(":"), 0);
 925         StrBufAppendBuf(hdr->HR.plainauth, hdr->HR.user_agent, 0);
 926         hdr->HR.SessionKey = hashlittle(SKEY(hdr->HR.plainauth), 89479832);
 927 /*
 928         syslog(1, "CheckAuthBasic: calculated sessionkey %ld\n",
 929                 hdr->HR.SessionKey);
 930 */
 931 }
 932
 933
 934 void GetAuthBasic(ParsedHttpHdrs *hdr)
 935 {
 936         const char *Pos = NULL;
 937         if (hdr->c_username == NULL)
 938                 hdr->c_username = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_USER));
 939         if (hdr->c_password == NULL)
 940                 hdr->c_password = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_PASS));
 941         StrBufExtract_NextToken(hdr->c_username, hdr->HR.plainauth, &Pos, ':');
 942         StrBufExtract_NextToken(hdr->c_password, hdr->HR.plainauth, &Pos, ':');
 943 }
 944
 945
 946 void Header_HandleCookie(StrBuf *Line, ParsedHttpHdrs *hdr)
 947 {
 948         const char *pch;
 949 /*
 950   todo: enable this if we can have other sessions than authenticated ones.
 951         if (hdr->DontNeedAuth)
 952                 return;
 953 */
 954         pch = strstr(ChrPtr(Line), "webcit=");
 955         if (pch == NULL) {
 956                 return;
 957         }
 958
 959         hdr->HR.RawCookie = Line;
 960         StrBufCutLeft(hdr->HR.RawCookie, (pch - ChrPtr(hdr->HR.RawCookie)) + 7);
 961         StrBufDecodeHex(hdr->HR.RawCookie);
 962
 963         cookie_to_stuff(Line, &hdr->HR.desired_session,
 964                         hdr->c_username,
 965                         hdr->c_password,
 966                         hdr->c_roomname,
 967                         hdr->c_language
 968         );
 969         hdr->HR.got_auth = AUTH_COOKIE;
 970 }
 971
 972
 973 void
 974 HttpNewModule_AUTH
 975 (ParsedHttpHdrs *httpreq)
 976 {
 977         httpreq->c_username = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_USER));
 978         httpreq->c_password = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_PASS));
 979         httpreq->c_roomname = NewStrBuf();
 980         httpreq->c_language = NewStrBuf();
 981 }
 982
 983
 984 void
 985 HttpDetachModule_AUTH
 986 (ParsedHttpHdrs *httpreq)
 987 {
 988         FLUSHStrBuf(httpreq->c_username);
 989         FLUSHStrBuf(httpreq->c_password);
 990         FLUSHStrBuf(httpreq->c_roomname);
 991         FLUSHStrBuf(httpreq->c_language);
 992 }
 993
 994
 995 void
 996 HttpDestroyModule_AUTH
 997 (ParsedHttpHdrs *httpreq)
 998 {
 999         FreeStrBuf(&httpreq->c_username);
1000         FreeStrBuf(&httpreq->c_password);
1001         FreeStrBuf(&httpreq->c_roomname);
1002         FreeStrBuf(&httpreq->c_language);
1003 }
1004
1005
1006 void
1007 InitModule_AUTH
1008 (void)
1009 {
1010         initialize_axdefs();
1011         RegisterHeaderHandler(HKEY("COOKIE"), Header_HandleCookie);
1012         RegisterHeaderHandler(HKEY("AUTHORIZATION"), Header_HandleAuth);
1013
1014         /* no url pattern at all? Show login. */
1015         WebcitAddUrlHandler(HKEY(""), "", 0, do_welcome, ANONYMOUS|COOKIEUNNEEDED);
1016
1017         WebcitAddUrlHandler(HKEY("do_welcome"), "", 0, do_welcome, ANONYMOUS|COOKIEUNNEEDED);
1018         WebcitAddUrlHandler(HKEY("openid_login"), "", 0, do_openid_login, ANONYMOUS);
1019         WebcitAddUrlHandler(HKEY("finalize_openid_login"), "", 0, finalize_openid_login, ANONYMOUS);
1020         WebcitAddUrlHandler(HKEY("openid_manual_create"), "", 0, openid_manual_create, ANONYMOUS);
1021         WebcitAddUrlHandler(HKEY("validate"), "", 0, validate, 0);
1022         WebcitAddUrlHandler(HKEY("do_welcome"), "", 0, do_welcome, 0);
1023         WebcitAddUrlHandler(HKEY("display_reg"), "", 0, _display_reg, 0);
1024         WebcitAddUrlHandler(HKEY("display_changepw"), "", 0, display_changepw, 0);
1025         WebcitAddUrlHandler(HKEY("changepw"), "", 0, changepw, 0);
1026         WebcitAddUrlHandler(HKEY("termquit"), "", 0, do_logout, 0);
1027         WebcitAddUrlHandler(HKEY("do_logout"), "", 0, do_logout, ANONYMOUS|COOKIEUNNEEDED|FORCE_SESSIONCLOSE);
1028         WebcitAddUrlHandler(HKEY("ajax_login_username_password"), "", 0, ajax_login_username_password, AJAX|ANONYMOUS);
1029         WebcitAddUrlHandler(HKEY("ajax_login_newuser"), "", 0, ajax_login_newuser, AJAX|ANONYMOUS);
1030         WebcitAddUrlHandler(HKEY("switch_language"), "", 0, switch_language, ANONYMOUS);
1031         RegisterConditional(HKEY("COND:AIDE"), 2, ConditionalAide, CTX_NONE);
1032         RegisterConditional(HKEY("COND:LOGGEDIN"), 2, ConditionalIsLoggedIn, CTX_NONE);
1033         RegisterConditional(HKEY("COND:MAY_CREATE_ROOM"), 2,  ConditionalHaveAccessCreateRoom, CTX_NONE);
1034         return;
1035 }
1036
1037
1038 void
1039 SessionDestroyModule_AUTH
1040 (wcsession *sess)
1041 {
1042         FreeStrBuf(&sess->wc_username);
1043         FreeStrBuf(&sess->wc_fullname);
1044         FreeStrBuf(&sess->wc_password);
1045         FreeStrBuf(&sess->httpauth_pass);
1046         FreeStrBuf(&sess->cs_inet_email);
1047 }