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  * Special page for monitoring scripts etc
 557  */
 558 void monitor(void)
 559 {
 560         wcsession *WCC = WC;
 561         char buf[SIZ];
 562
 563         FlushStrBuf(WCC->wc_username);
 564         FlushStrBuf(WCC->wc_password);
 565         FlushStrBuf(WCC->wc_fullname);
 566         FlushRoomlist();
 567
 568         serv_puts("LOUT");
 569         serv_getln(buf, sizeof buf);
 570         WCC->logged_in = 0;
 571
 572         FlushStrBuf(WCC->CurRoom.name);
 573
 574         /* Calling output_headers() this way causes the cookies to be un-set */
 575         output_headers(1, 0, 0, 1, 1, 0);
 576
 577         wc_printf("<html><body><tt>");
 578         wc_printf("<strong>WebCit monitoring screen</strong><br>\n");
 579         wc_printf("Connection to Citadel server at %s:%s : %s<br>\n",
 580                 ctdlhost, ctdlport,
 581                 (WC->connected ? "SUCCESS" : "FAIL")
 582         );
 583         wc_printf("</body></html>\n");
 584
 585         wDumpContent(2);
 586         end_webcit_session();
 587 }
 588
 589
 590 /*
 591  * validate new users
 592  */
 593 void validate(void)
 594 {
 595         char cmd[SIZ];
 596         char user[SIZ];
 597         char buf[SIZ];
 598         int a;
 599
 600         output_headers(1, 1, 1, 0, 0, 0);
 601
 602         do_template("beginbox_1");
 603         StrBufAppendBufPlain(WC->WBuf, _("Validate new users"), -1, 0);
 604         do_template("beginbox_2");
 605
 606         /* If the user just submitted a validation, process it... */
 607         safestrncpy(buf, bstr("user"), sizeof buf);
 608         if (!IsEmptyStr(buf)) {
 609                 if (havebstr("axlevel")) {
 610                         serv_printf("VALI %s|%s", buf, bstr("axlevel"));
 611                         serv_getln(buf, sizeof buf);
 612                         if (buf[0] != '2') {
 613                                 wc_printf("<b>%s</b><br>\n", &buf[4]);
 614                         }
 615                 }
 616         }
 617
 618         /* Now see if any more users require validation. */
 619         serv_puts("GNUR");
 620         serv_getln(buf, sizeof buf);
 621         if (buf[0] == '2') {
 622                 wc_printf("<b>");
 623                 wc_printf(_("No users require validation at this time."));
 624                 wc_printf("</b><br>\n");
 625                 wDumpContent(1);
 626                 return;
 627         }
 628         if (buf[0] != '3') {
 629                 wc_printf("<b>%s</b><br>\n", &buf[4]);
 630                 wDumpContent(1);
 631                 return;
 632         }
 633
 634         wc_printf("<table class=\"auth_validate\"><tr><td>\n");
 635         wc_printf("<div id=\"validate\">");
 636
 637         safestrncpy(user, &buf[4], sizeof user);
 638         serv_printf("GREG %s", user);
 639         serv_getln(cmd, sizeof cmd);
 640         if (cmd[0] == '1') {
 641                 a = 0;
 642                 do {
 643                         serv_getln(buf, sizeof buf);
 644                         ++a;
 645                         if (a == 1)
 646                                 wc_printf("#%s<br><H1>%s</H1>",
 647                                         buf, &cmd[4]);
 648                         if (a == 2) {
 649                                 char *pch;
 650                                 int haveChar = 0;
 651                                 int haveNum = 0;
 652                                 int haveOther = 0;
 653                                 int count = 0;
 654                                 pch = buf;
 655                                 while (!IsEmptyStr(pch))
 656                                 {
 657                                         if (isdigit(*pch))
 658                                                 haveNum = 1;
 659                                         else if (isalpha(*pch))
 660                                                 haveChar = 1;
 661                                         else
 662                                                 haveOther = 1;
 663                                         pch ++;
 664                                 }
 665                                 count = pch - buf;
 666                                 if (count > 7)
 667                                         count = 0;
 668                                 switch (count){
 669                                 case 0:
 670                                         pch = _("very weak");
 671                                         break;
 672                                 case 1:
 673                                         pch = _("weak");
 674                                         break;
 675                                 case 2:
 676                                         pch = _("ok");
 677                                         break;
 678                                 case 3:
 679                                 default:
 680                                         pch = _("strong");
 681                                 }
 682
 683                                 wc_printf("PW: %s<br>\n", pch);
 684                         }
 685                         if (a == 3)
 686                                 wc_printf("%s<br>\n", buf);
 687                         if (a == 4)
 688                                 wc_printf("%s<br>\n", buf);
 689                         if (a == 5)
 690                                 wc_printf("%s, ", buf);
 691                         if (a == 6)
 692                                 wc_printf("%s ", buf);
 693                         if (a == 7)
 694                                 wc_printf("%s<br>\n", buf);
 695                         if (a == 8)
 696                                 wc_printf("%s<br>\n", buf);
 697                         if (a == 9)
 698                                 wc_printf(_("Current access level: %d (%s)\n"),
 699                                         atoi(buf), axdefs[atoi(buf)]);
 700                 } while (strcmp(buf, "000"));
 701         } else {
 702                 wc_printf("<H1>%s</H1>%s<br>\n", user, &cmd[4]);
 703         }
 704
 705         wc_printf("<hr />");
 706         wc_printf(_("Select access level for this user:"));
 707         wc_printf("<br>\n");
 708         for (a = 0; a <= 6; ++a) {
 709                 wc_printf("<a href=\"validate?nonce=%d?user=", WC->nonce);
 710                 urlescputs(user);
 711                 wc_printf("&axlevel=%d\">%s</A>&nbsp;&nbsp;&nbsp;\n",
 712                         a, axdefs[a]);
 713         }
 714         wc_printf("<br>\n");
 715
 716         wc_printf("</div>\n");
 717         wc_printf("</td></tr></table>\n");
 718         do_template("endbox");
 719         wDumpContent(1);
 720 }
 721
 722
 723 /*
 724  * Display form for registration.
 725  *
 726  * (Set during_login to 1 if this registration is being performed during
 727  * new user login and will require chaining to the proper screen.)
 728  */
 729 void display_reg(int during_login)
 730 {
 731         folder Room;
 732         StrBuf *Buf;
 733         message_summary *VCMsg = NULL;
 734         wc_mime_attachment *VCAtt = NULL;
 735         long vcard_msgnum;
 736
 737         Buf = NewStrBuf();
 738         memset(&Room, 0, sizeof(folder));
 739         if (goto_config_room(Buf, &Room) != 0) {
 740                 syslog(9, "display_reg() exiting because goto_config_room() failed\n");
 741                 if (during_login) {
 742                         pop_destination();
 743                 }
 744                 else {
 745                         display_main_menu();
 746                 }
 747                 FreeStrBuf(&Buf);
 748                 FlushFolder(&Room);
 749                 return;
 750         }
 751         FlushFolder(&Room);
 752
 753         FreeStrBuf(&Buf);
 754         vcard_msgnum = locate_user_vcard_in_this_room(&VCMsg, &VCAtt);
 755         if (vcard_msgnum < 0L) {
 756                 syslog(9, "display_reg() exiting because locate_user_vcard_in_this_room() failed\n");
 757                 if (during_login) {
 758                         pop_destination();
 759                 }
 760                 else {
 761                         display_main_menu();
 762                 }
 763                 return;
 764         }
 765
 766         if (during_login) {
 767                 do_edit_vcard(vcard_msgnum, "1", VCMsg, VCAtt, "pop", USERCONFIGROOM);
 768         }
 769         else {
 770                 StrBuf *ReturnTo;
 771                 ReturnTo = NewStrBufPlain(HKEY("display_main_menu?go="));
 772                 StrBufAppendBuf(ReturnTo, WC->CurRoom.name, 0);
 773                 do_edit_vcard(vcard_msgnum, "1", VCMsg, VCAtt, ChrPtr(ReturnTo), USERCONFIGROOM);
 774                 FreeStrBuf(&ReturnTo);
 775         }
 776
 777 }
 778
 779
 780 /*
 781  * display form for changing your password
 782  */
 783 void display_changepw(void)
 784 {
 785         WCTemplputParams SubTP;
 786         char buf[SIZ];
 787         StrBuf *Buf;
 788         output_headers(1, 1, 1, 0, 0, 0);
 789
 790         Buf = NewStrBufPlain(_("Change your password"), -1);
 791         memset(&SubTP, 0, sizeof(WCTemplputParams));
 792         SubTP.Filter.ContextType = CTX_STRBUF;
 793         SubTP.Context = Buf;
 794         DoTemplate(HKEY("beginbox"), NULL, &SubTP);
 795
 796         FreeStrBuf(&Buf);
 797
 798         if (!IsEmptyStr(WC->ImportantMessage)) {
 799                 wc_printf("<span class=\"errormsg\">"
 800                         "%s</span><br>\n", WC->ImportantMessage);
 801                 safestrncpy(WC->ImportantMessage, "", sizeof WC->ImportantMessage);
 802         }
 803
 804         serv_puts("MESG changepw");
 805         serv_getln(buf, sizeof buf);
 806         if (buf[0] == '1') {
 807                 fmout("CENTER");
 808         }
 809
 810         wc_printf("<form name=\"changepwform\" action=\"changepw\" method=\"post\">\n");
 811         wc_printf("<input type=\"hidden\" name=\"nonce\" value=\"%d\">\n", WC->nonce);
 812         wc_printf("<table class=\"altern\" ");
 813         wc_printf("<tr class=\"even\"><td>");
 814         wc_printf(_("Enter new password:"));
 815         wc_printf("</td><td>");
 816         wc_printf("<input type=\"password\" name=\"newpass1\" value=\"\" maxlength=\"20\"></td></tr>\n");
 817         wc_printf("<tr class=\"odd\"><td>");
 818         wc_printf(_("Enter it again to confirm:"));
 819         wc_printf("</td><td>");
 820         wc_printf("<input type=\"password\" name=\"newpass2\" value=\"\" maxlength=\"20\"></td></tr>\n");
 821         wc_printf("</table>\n");
 822
 823         wc_printf("<div class=\"buttons\">\n");
 824         wc_printf("<input type=\"submit\" name=\"change_action\" value=\"%s\">", _("Change password"));
 825         wc_printf("&nbsp;");
 826         wc_printf("<input type=\"submit\" name=\"cancel_action\" value=\"%s\">\n", _("Cancel"));
 827         wc_printf("</div>\n");
 828         wc_printf("</form>\n");
 829
 830         do_template("endbox");
 831         wDumpContent(1);
 832 }
 833
 834 /*
 835  * change password
 836  * if passwords match, propagate it to citserver.
 837  */
 838 void changepw(void)
 839 {
 840         char buf[SIZ];
 841         char newpass1[32], newpass2[32];
 842
 843         if (!havebstr("change_action")) {
 844                 safestrncpy(WC->ImportantMessage,
 845                         _("Cancelled.  Password was not changed."),
 846                         sizeof WC->ImportantMessage);
 847                 display_main_menu();
 848                 return;
 849         }
 850
 851         safestrncpy(newpass1, bstr("newpass1"), sizeof newpass1);
 852         safestrncpy(newpass2, bstr("newpass2"), sizeof newpass2);
 853
 854         if (strcasecmp(newpass1, newpass2)) {
 855                 safestrncpy(WC->ImportantMessage,
 856                         _("They don't match.  Password was not changed."),
 857                         sizeof WC->ImportantMessage);
 858                 display_changepw();
 859                 return;
 860         }
 861
 862         if (IsEmptyStr(newpass1)) {
 863                 safestrncpy(WC->ImportantMessage,
 864                         _("Blank passwords are not allowed."),
 865                         sizeof WC->ImportantMessage);
 866                 display_changepw();
 867                 return;
 868         }
 869
 870         serv_printf("SETP %s", newpass1);
 871         serv_getln(buf, sizeof buf);
 872         sprintf(WC->ImportantMessage, "%s", &buf[4]);
 873         if (buf[0] == '2') {
 874                 if (WC->wc_password == NULL)
 875                         WC->wc_password = NewStrBufPlain(buf, -1);
 876                 else {
 877                         FlushStrBuf(WC->wc_password);
 878                         StrBufAppendBufPlain(WC->wc_password,  buf, -1, 0);
 879                 }
 880                 display_main_menu();
 881         }
 882         else {
 883                 display_changepw();
 884         }
 885 }
 886
 887
 888 int ConditionalHaveAccessCreateRoom(StrBuf *Target, WCTemplputParams *TP)
 889 {
 890         StrBuf *Buf;
 891
 892         Buf = NewStrBuf();
 893         serv_puts("CRE8 0");
 894         StrBuf_ServGetln(Buf);
 895
 896         if (GetServerStatus(Buf, NULL) == 2) {
 897                 StrBufCutLeft(Buf, 4);
 898                 AppendImportantMessage(SKEY(Buf));
 899                 FreeStrBuf(&Buf);
 900                 return 0;
 901         }
 902         FreeStrBuf(&Buf);
 903         return 1;
 904 }
 905
 906
 907 int ConditionalAide(StrBuf *Target, WCTemplputParams *TP)
 908 {
 909         wcsession *WCC = WC;
 910         return (WCC != NULL) ? ((WCC->logged_in == 0)||(WC->is_aide == 0)) : 0;
 911 }
 912
 913
 914 int ConditionalIsLoggedIn(StrBuf *Target, WCTemplputParams *TP)
 915 {
 916         wcsession *WCC = WC;
 917         return (WCC != NULL) ? (WCC->logged_in == 0) : 0;
 918
 919 }
 920
 921
 922 /*
 923  * toggle the session over to a different language
 924  */
 925 void switch_language(void) {
 926         set_selected_language(bstr("lang"));
 927         pop_destination();
 928 }
 929
 930
 931 void _display_reg(void) {
 932         display_reg(0);
 933 }
 934
 935
 936 void Header_HandleAuth(StrBuf *Line, ParsedHttpHdrs *hdr)
 937 {
 938         if (hdr->HR.got_auth == NO_AUTH) /* don't override cookie auth... */
 939         {
 940                 if (strncasecmp(ChrPtr(Line), "Basic", 5) == 0) {
 941                         StrBufCutLeft(Line, 6);
 942                         StrBufDecodeBase64(Line);
 943                         hdr->HR.plainauth = Line;
 944                         hdr->HR.got_auth = AUTH_BASIC;
 945                 }
 946                 else
 947                         syslog(1, "Authentication scheme not supported! [%s]\n", ChrPtr(Line));
 948         }
 949 }
 950
 951
 952 void CheckAuthBasic(ParsedHttpHdrs *hdr)
 953 {
 954 /*
 955   todo: enable this if we can have other sessions than authenticated ones.
 956         if (hdr->DontNeedAuth)
 957                 return;
 958 */
 959         StrBufAppendBufPlain(hdr->HR.plainauth, HKEY(":"), 0);
 960         StrBufAppendBuf(hdr->HR.plainauth, hdr->HR.user_agent, 0);
 961         hdr->HR.SessionKey = hashlittle(SKEY(hdr->HR.plainauth), 89479832);
 962 /*
 963         syslog(1, "CheckAuthBasic: calculated sessionkey %ld\n",
 964                 hdr->HR.SessionKey);
 965 */
 966 }
 967
 968
 969 void GetAuthBasic(ParsedHttpHdrs *hdr)
 970 {
 971         const char *Pos = NULL;
 972         if (hdr->c_username == NULL)
 973                 hdr->c_username = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_USER));
 974         if (hdr->c_password == NULL)
 975                 hdr->c_password = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_PASS));
 976         StrBufExtract_NextToken(hdr->c_username, hdr->HR.plainauth, &Pos, ':');
 977         StrBufExtract_NextToken(hdr->c_password, hdr->HR.plainauth, &Pos, ':');
 978 }
 979
 980
 981 void Header_HandleCookie(StrBuf *Line, ParsedHttpHdrs *hdr)
 982 {
 983         const char *pch;
 984 /*
 985   todo: enable this if we can have other sessions than authenticated ones.
 986         if (hdr->DontNeedAuth)
 987                 return;
 988 */
 989         pch = strstr(ChrPtr(Line), "webcit=");
 990         if (pch == NULL) {
 991                 return;
 992         }
 993
 994         hdr->HR.RawCookie = Line;
 995         StrBufCutLeft(hdr->HR.RawCookie, (pch - ChrPtr(hdr->HR.RawCookie)) + 7);
 996         StrBufDecodeHex(hdr->HR.RawCookie);
 997
 998         cookie_to_stuff(Line, &hdr->HR.desired_session,
 999                         hdr->c_username,
1000                         hdr->c_password,
1001                         hdr->c_roomname,
1002                         hdr->c_language
1003         );
1004         hdr->HR.got_auth = AUTH_COOKIE;
1005 }
1006
1007
1008 void
1009 HttpNewModule_AUTH
1010 (ParsedHttpHdrs *httpreq)
1011 {
1012         httpreq->c_username = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_USER));
1013         httpreq->c_password = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_PASS));
1014         httpreq->c_roomname = NewStrBuf();
1015         httpreq->c_language = NewStrBuf();
1016 }
1017
1018
1019 void
1020 HttpDetachModule_AUTH
1021 (ParsedHttpHdrs *httpreq)
1022 {
1023         FLUSHStrBuf(httpreq->c_username);
1024         FLUSHStrBuf(httpreq->c_password);
1025         FLUSHStrBuf(httpreq->c_roomname);
1026         FLUSHStrBuf(httpreq->c_language);
1027 }
1028
1029
1030 void
1031 HttpDestroyModule_AUTH
1032 (ParsedHttpHdrs *httpreq)
1033 {
1034         FreeStrBuf(&httpreq->c_username);
1035         FreeStrBuf(&httpreq->c_password);
1036         FreeStrBuf(&httpreq->c_roomname);
1037         FreeStrBuf(&httpreq->c_language);
1038 }
1039
1040
1041 void
1042 InitModule_AUTH
1043 (void)
1044 {
1045         initialize_axdefs();
1046         RegisterHeaderHandler(HKEY("COOKIE"), Header_HandleCookie);
1047         RegisterHeaderHandler(HKEY("AUTHORIZATION"), Header_HandleAuth);
1048
1049         /* no url pattern at all? Show login. */
1050         WebcitAddUrlHandler(HKEY(""), "", 0, do_welcome, ANONYMOUS|COOKIEUNNEEDED);
1051
1052         WebcitAddUrlHandler(HKEY("do_welcome"), "", 0, do_welcome, ANONYMOUS|COOKIEUNNEEDED);
1053         WebcitAddUrlHandler(HKEY("openid_login"), "", 0, do_openid_login, ANONYMOUS);
1054         WebcitAddUrlHandler(HKEY("finalize_openid_login"), "", 0, finalize_openid_login, ANONYMOUS);
1055         WebcitAddUrlHandler(HKEY("openid_manual_create"), "", 0, openid_manual_create, ANONYMOUS);
1056         WebcitAddUrlHandler(HKEY("validate"), "", 0, validate, 0);
1057         WebcitAddUrlHandler(HKEY("do_welcome"), "", 0, do_welcome, 0);
1058         WebcitAddUrlHandler(HKEY("display_reg"), "", 0, _display_reg, 0);
1059         WebcitAddUrlHandler(HKEY("display_changepw"), "", 0, display_changepw, 0);
1060         WebcitAddUrlHandler(HKEY("changepw"), "", 0, changepw, 0);
1061         WebcitAddUrlHandler(HKEY("termquit"), "", 0, do_logout, 0);
1062         WebcitAddUrlHandler(HKEY("do_logout"), "", 0, do_logout, ANONYMOUS|COOKIEUNNEEDED|FORCE_SESSIONCLOSE);
1063         WebcitAddUrlHandler(HKEY("monitor"), "", 0, monitor, ANONYMOUS|COOKIEUNNEEDED|FORCE_SESSIONCLOSE);
1064         WebcitAddUrlHandler(HKEY("ajax_login_username_password"), "", 0, ajax_login_username_password, AJAX|ANONYMOUS);
1065         WebcitAddUrlHandler(HKEY("ajax_login_newuser"), "", 0, ajax_login_newuser, AJAX|ANONYMOUS);
1066         WebcitAddUrlHandler(HKEY("switch_language"), "", 0, switch_language, ANONYMOUS);
1067         RegisterConditional(HKEY("COND:AIDE"), 2, ConditionalAide, CTX_NONE);
1068         RegisterConditional(HKEY("COND:LOGGEDIN"), 2, ConditionalIsLoggedIn, CTX_NONE);
1069         RegisterConditional(HKEY("COND:MAY_CREATE_ROOM"), 2,  ConditionalHaveAccessCreateRoom, CTX_NONE);
1070         return;
1071 }
1072
1073
1074 void
1075 SessionDestroyModule_AUTH
1076 (wcsession *sess)
1077 {
1078         FreeStrBuf(&sess->wc_username);
1079         FreeStrBuf(&sess->wc_fullname);
1080         FreeStrBuf(&sess->wc_password);
1081         FreeStrBuf(&sess->httpauth_pass);
1082         FreeStrBuf(&sess->cs_inet_email);
1083 }