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", NULL);
  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) { /* TODO: make this a define, else it might trick us later */
 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 }
 139
 140
 141 /*
 142  * modal/ajax version of 'login' (username and password)
 143  */
 144 void ajax_login_username_password(void) {
 145         StrBuf *Buf = NewStrBuf();
 146
 147         serv_printf("USER %s", bstr("name"));
 148         StrBuf_ServGetln(Buf);
 149         if (GetServerStatus(Buf, NULL) == 3) {
 150                 serv_printf("PASS %s", bstr("pass"));
 151                 StrBuf_ServGetln(Buf);
 152                 if (GetServerStatus(Buf, NULL) == 2) {
 153                         become_logged_in(sbstr("name"), sbstr("pass"), Buf);
 154                 }
 155         }
 156
 157         /* The client is expecting to read back a citadel protocol response */
 158         wc_printf("%s", ChrPtr(Buf));
 159         FreeStrBuf(&Buf);
 160 }
 161
 162
 163
 164 /*
 165  * modal/ajax version of 'new user' (username and password)
 166  */
 167 void ajax_login_newuser(void) {
 168         StrBuf *NBuf = NewStrBuf();
 169         StrBuf *SBuf = NewStrBuf();
 170
 171         serv_printf("NEWU %s", bstr("name"));
 172         StrBuf_ServGetln(NBuf);
 173         if (GetServerStatus(NBuf, NULL) == 2) {
 174                 become_logged_in(sbstr("name"), sbstr("pass"), NBuf);
 175                 serv_printf("SETP %s", bstr("pass"));
 176                 StrBuf_ServGetln(SBuf);
 177         }
 178
 179         /* The client is expecting to read back a citadel protocol response */
 180         wc_printf("%s", ChrPtr(NBuf));
 181         FreeStrBuf(&NBuf);
 182         FreeStrBuf(&SBuf);
 183 }
 184
 185
 186
 187 /*
 188  * Try to create an account manually after an OpenID was verified
 189  */
 190 void openid_manual_create(void)
 191 {
 192         StrBuf *Buf;
 193
 194         /* Did the user change his mind?  Pack up and go home. */
 195         if (havebstr("exit_action")) {
 196                 begin_burst();
 197                 output_headers(1, 0, 0, 0, 1, 0);
 198                 do_template("authpopup_finished", NULL);
 199                 end_burst();
 200                 return;
 201         }
 202
 203
 204         /* Ok, let's give this a try.  Can we create the new user? */
 205
 206         Buf = NewStrBuf();
 207         serv_printf("OIDC %s", bstr("name"));
 208         StrBuf_ServGetln(Buf);
 209         if (GetServerStatus(Buf, NULL) == 2) {
 210                 StrBuf *gpass;
 211
 212                 gpass = NewStrBuf();
 213                 serv_puts("SETP GENERATE_RANDOM_PASSWORD");
 214                 StrBuf_ServGetln(gpass);
 215                 StrBufCutLeft(gpass, 4);
 216                 become_logged_in(sbstr("name"), gpass, Buf);
 217                 FreeStrBuf(&gpass);
 218         }
 219         FreeStrBuf(&Buf);
 220
 221         /* Did we manage to log in?  If so, continue with the normal flow... */
 222         if (WC->logged_in) {
 223                 if (WC->logged_in) {
 224                         begin_burst();
 225                         output_headers(1, 0, 0, 0, 1, 0);
 226                         do_template("authpopup_finished", NULL);
 227                         end_burst();
 228                 }
 229         } else {
 230
 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", NULL);
 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
 307                                 Cursor = GetNewHashPos (WCC->Hdr->urlstrings, 0);
 308                                 while (GetNextHashPos(WCC->Hdr->urlstrings, Cursor, &HKLen, &HKey, &U)) {
 309                                         u = (urlcontent*) U;
 310                                         if (!strncasecmp(u->url_key, "openid.", 7)) {
 311                                                 serv_printf("%s|%s", &u->url_key[7], ChrPtr(u->url_data));
 312                                         }
 313                                 }
 314
 315                                 serv_puts("000");
 316
 317                                 linecount = 0;
 318                                 while (StrBuf_ServGetln(Buf), strcmp(ChrPtr(Buf), "000"))
 319                                 {
 320                                         if (linecount == 0) result = NewStrBufDup(Buf);
 321                                         if (!strcasecmp(ChrPtr(result), "authenticate")) {
 322                                                 if (linecount == 1) {
 323                                                         username = NewStrBufDup(Buf);
 324                                                 }
 325                                                 else if (linecount == 2) {
 326                                                         password = NewStrBufDup(Buf);
 327                                                 }
 328                                                 else if (linecount == 3) {
 329                                                         logged_in_response = NewStrBufDup(Buf);
 330                                                 }
 331                                         }
 332                                         else if (!strcasecmp(ChrPtr(result), "verify_only")) {
 333                                                 if (linecount == 1) {
 334                                                         claimed_id = NewStrBufDup(Buf);
 335                                                 }
 336                                                 if (linecount == 2) {
 337                                                         username = NewStrBufDup(Buf);
 338                                                 }
 339                                         }
 340                                         ++linecount;
 341                                 }
 342                         }
 343                         FreeStrBuf(&Buf);
 344                 }
 345         }
 346
 347         /*
 348          * Is this an attempt to associate a new OpenID with an account that is already logged in?
 349          */
 350         if ( (WCC->logged_in) && (havebstr("attach_existing")) ) {
 351                 display_openids();
 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         else if (!strcasecmp(ChrPtr(result), "authenticate")) {
 358                 become_logged_in(username, password, logged_in_response);
 359
 360                 /* Did we manage to log in?  If so, continue with the normal flow... */
 361                 if (WC->logged_in) {
 362                         begin_burst();
 363                         output_headers(1, 0, 0, 0, 1, 0);
 364                         do_template("authpopup_finished", NULL);
 365                         end_burst();
 366                 } else {
 367                         begin_burst();
 368                         output_headers(1, 0, 0, 0, 1, 0);
 369                         wc_printf("<html><body>");
 370                         wc_printf(_("An error has occurred."));
 371                         wc_printf("</body></html>");
 372                         end_burst();
 373                 }
 374         }
 375
 376         /* The specified OpenID was verified but the desired user name was either not specified via SRE
 377          * or conflicts with an existing user.  Either way the user will need to specify a new name.
 378          */
 379         else if (!strcasecmp(ChrPtr(result), "verify_only")) {
 380                 putbstr("__claimed_id", claimed_id);
 381                 claimed_id = NULL;
 382                 if (StrLength(username) > 0) {
 383                         putbstr("__username", username);
 384                         username = NULL;
 385                 }
 386                 begin_burst();
 387                 output_headers(1, 0, 0, 0, 1, 0);
 388                 wc_printf("<html><body>");
 389                 do_template("openid_manual_create", NULL);
 390                 wc_printf("</body></html>");
 391                 end_burst();
 392         }
 393
 394         /* Something went VERY wrong if we get to this point */
 395         else {
 396                 syslog(1, "finalize_openid_login() failed to do anything.  This is a code problem.\n");
 397                 begin_burst();
 398                 output_headers(1, 0, 0, 0, 1, 0);
 399                 wc_printf("<html><body>");
 400                 wc_printf(_("An error has occurred."));
 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                         pop_destination();
 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                         pop_destination();
 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, "pop", 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 }
 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", NULL);
 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 int ConditionalHaveAccessCreateRoom(StrBuf *Target, WCTemplputParams *TP)
 853 {
 854         StrBuf *Buf;
 855
 856         Buf = NewStrBuf();
 857         serv_puts("CRE8 0");
 858         StrBuf_ServGetln(Buf);
 859
 860         if (GetServerStatus(Buf, NULL) == 2) {
 861                 StrBufCutLeft(Buf, 4);
 862                 AppendImportantMessage(SKEY(Buf));
 863                 FreeStrBuf(&Buf);
 864                 return 0;
 865         }
 866         FreeStrBuf(&Buf);
 867         return 1;
 868 }
 869
 870 int ConditionalAide(StrBuf *Target, WCTemplputParams *TP)
 871 {
 872         wcsession *WCC = WC;
 873         return (WCC != NULL) ? ((WCC->logged_in == 0)||(WC->is_aide == 0)) : 0;
 874 }
 875
 876 int ConditionalIsLoggedIn(StrBuf *Target, WCTemplputParams *TP)
 877 {
 878         wcsession *WCC = WC;
 879         return (WCC != NULL) ? (WCC->logged_in == 0) : 0;
 880
 881 }
 882
 883
 884
 885 void _display_reg(void) {
 886         display_reg(0);
 887 }
 888
 889
 890 void Header_HandleAuth(StrBuf *Line, ParsedHttpHdrs *hdr)
 891 {
 892         if (hdr->HR.got_auth == NO_AUTH) /* don't override cookie auth... */
 893         {
 894                 if (strncasecmp(ChrPtr(Line), "Basic", 5) == 0) {
 895                         StrBufCutLeft(Line, 6);
 896                         StrBufDecodeBase64(Line);
 897                         hdr->HR.plainauth = Line;
 898                         hdr->HR.got_auth = AUTH_BASIC;
 899                 }
 900                 else
 901                         syslog(1, "Authentication scheme not supported! [%s]\n", ChrPtr(Line));
 902         }
 903 }
 904
 905 void CheckAuthBasic(ParsedHttpHdrs *hdr)
 906 {
 907 /*
 908   todo: enable this if we can have other sessions than authenticated ones.
 909         if (hdr->DontNeedAuth)
 910                 return;
 911 */
 912         StrBufAppendBufPlain(hdr->HR.plainauth, HKEY(":"), 0);
 913         StrBufAppendBuf(hdr->HR.plainauth, hdr->HR.user_agent, 0);
 914         hdr->HR.SessionKey = hashlittle(SKEY(hdr->HR.plainauth), 89479832);
 915 /*
 916         syslog(1, "CheckAuthBasic: calculated sessionkey %ld\n",
 917                 hdr->HR.SessionKey);
 918 */
 919 }
 920
 921 void GetAuthBasic(ParsedHttpHdrs *hdr)
 922 {
 923         const char *Pos = NULL;
 924         if (hdr->c_username == NULL)
 925                 hdr->c_username = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_USER));
 926         if (hdr->c_password == NULL)
 927                 hdr->c_password = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_PASS));
 928         StrBufExtract_NextToken(hdr->c_username, hdr->HR.plainauth, &Pos, ':');
 929         StrBufExtract_NextToken(hdr->c_password, hdr->HR.plainauth, &Pos, ':');
 930 }
 931
 932 void Header_HandleCookie(StrBuf *Line, ParsedHttpHdrs *hdr)
 933 {
 934         const char *pch;
 935 /*
 936   todo: enable this if we can have other sessions than authenticated ones.
 937         if (hdr->DontNeedAuth)
 938                 return;
 939 */
 940         pch = strstr(ChrPtr(Line), "webcit=");
 941         if (pch == NULL) {
 942                 return;
 943         }
 944
 945         hdr->HR.RawCookie = Line;
 946         StrBufCutLeft(hdr->HR.RawCookie, (pch - ChrPtr(hdr->HR.RawCookie)) + 7);
 947         StrBufDecodeHex(hdr->HR.RawCookie);
 948
 949         cookie_to_stuff(Line, &hdr->HR.desired_session,
 950                         hdr->c_username,
 951                         hdr->c_password,
 952                         hdr->c_roomname,
 953                         hdr->c_language
 954         );
 955         hdr->HR.got_auth = AUTH_COOKIE;
 956 }
 957
 958 void
 959 HttpNewModule_AUTH
 960 (ParsedHttpHdrs *httpreq)
 961 {
 962         httpreq->c_username = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_USER));
 963         httpreq->c_password = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_PASS));
 964         httpreq->c_roomname = NewStrBuf();
 965         httpreq->c_language = NewStrBuf();
 966 }
 967 void
 968 HttpDetachModule_AUTH
 969 (ParsedHttpHdrs *httpreq)
 970 {
 971         FLUSHStrBuf(httpreq->c_username);
 972         FLUSHStrBuf(httpreq->c_password);
 973         FLUSHStrBuf(httpreq->c_roomname);
 974         FLUSHStrBuf(httpreq->c_language);
 975 }
 976
 977 void
 978 HttpDestroyModule_AUTH
 979 (ParsedHttpHdrs *httpreq)
 980 {
 981         FreeStrBuf(&httpreq->c_username);
 982         FreeStrBuf(&httpreq->c_password);
 983         FreeStrBuf(&httpreq->c_roomname);
 984         FreeStrBuf(&httpreq->c_language);
 985 }
 986
 987 void
 988 InitModule_AUTH
 989 (void)
 990 {
 991         initialize_axdefs();
 992         RegisterHeaderHandler(HKEY("COOKIE"), Header_HandleCookie);
 993         RegisterHeaderHandler(HKEY("AUTHORIZATION"), Header_HandleAuth);
 994
 995         /* no url pattern at all? Show login. */
 996         WebcitAddUrlHandler(HKEY(""), "", 0, do_welcome, ANONYMOUS|COOKIEUNNEEDED);
 997
 998         /* some of these will be removed soon */
 999         WebcitAddUrlHandler(HKEY("do_welcome"), "", 0, do_welcome, ANONYMOUS|COOKIEUNNEEDED);
1000         WebcitAddUrlHandler(HKEY("openid_login"), "", 0, do_openid_login, ANONYMOUS);
1001         WebcitAddUrlHandler(HKEY("finalize_openid_login"), "", 0, finalize_openid_login, ANONYMOUS);
1002         WebcitAddUrlHandler(HKEY("openid_manual_create"), "", 0, openid_manual_create, ANONYMOUS);
1003         WebcitAddUrlHandler(HKEY("validate"), "", 0, validate, 0);
1004         WebcitAddUrlHandler(HKEY("do_welcome"), "", 0, do_welcome, 0);
1005         WebcitAddUrlHandler(HKEY("display_reg"), "", 0, _display_reg, 0);
1006         WebcitAddUrlHandler(HKEY("display_changepw"), "", 0, display_changepw, 0);
1007         WebcitAddUrlHandler(HKEY("changepw"), "", 0, changepw, 0);
1008         WebcitAddUrlHandler(HKEY("termquit"), "", 0, do_logout, 0);
1009         WebcitAddUrlHandler(HKEY("do_logout"), "", 0, do_logout, ANONYMOUS|COOKIEUNNEEDED|FORCE_SESSIONCLOSE);
1010         WebcitAddUrlHandler(HKEY("ajax_login_username_password"), "", 0, ajax_login_username_password, AJAX|ANONYMOUS);
1011         WebcitAddUrlHandler(HKEY("ajax_login_newuser"), "", 0, ajax_login_newuser, AJAX|ANONYMOUS);
1012         RegisterConditional(HKEY("COND:AIDE"), 2, ConditionalAide, CTX_NONE);
1013         RegisterConditional(HKEY("COND:LOGGEDIN"), 2, ConditionalIsLoggedIn, CTX_NONE);
1014         RegisterConditional(HKEY("COND:MAY_CREATE_ROOM"), 2,  ConditionalHaveAccessCreateRoom, CTX_NONE);
1015         return;
1016 }
1017
1018
1019 void
1020 SessionDestroyModule_AUTH
1021 (wcsession *sess)
1022 {
1023         FreeStrBuf(&sess->wc_username);
1024         FreeStrBuf(&sess->wc_fullname);
1025         FreeStrBuf(&sess->wc_password);
1026         FreeStrBuf(&sess->httpauth_pass);
1027         FreeStrBuf(&sess->cs_inet_email);
1028 }