webcit/auth.c

   1 /*
   2  * These functions handle authentication of users to a Citadel server.
   3  *
   4  * Copyright (c) 1996-2021 by the citadel.org team
   5  *
   6  * This program is open source software: you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License, version 3.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  */
  14
  15 #include "webcit.h"
  16 #include "webserver.h"
  17 #include <ctype.h>
  18
  19 extern uint32_t hashlittle( const void *key, size_t length, uint32_t initval);
  20
  21 /*
  22  * Access level definitions.  This is initialized from a function rather than a
  23  * static array so that the strings may be localized.
  24  */
  25 char *axdefs[7];
  26
  27 void initialize_axdefs(void) {
  28
  29         /* an erased user */
  30         axdefs[0] = _("Deleted");
  31
  32         /* a new user */
  33         axdefs[1] = _("New User");
  34
  35         /* a trouble maker */
  36         axdefs[2] = _("Problem User");
  37
  38         /* user with normal privileges */
  39         axdefs[3] = _("Local User");
  40
  41         /* a user that may access network resources */
  42         axdefs[4] = _("Network User");
  43
  44         /* a moderator */
  45         axdefs[5] = _("Preferred User");
  46
  47         /* chief */
  48         axdefs[6] = _("Admin");
  49 }
  50
  51
  52
  53 /*
  54  * Display the login screen
  55  * mesg = the error message if last attempt failed.
  56  */
  57 void display_login(void)
  58 {
  59         begin_burst();
  60         output_headers(1, 0, 0, 0, 1, 0);
  61         do_template("login");
  62         end_burst();
  63 }
  64
  65
  66
  67
  68
  69 /* Initialize the session
  70  *
  71  * This function needs to get called whenever the session changes from
  72  * not-logged-in to logged-in, either by an explicit login by the user or
  73  * by a timed-out session automatically re-establishing with a little help
  74  * from the browser cookie.  Either way, we need to load access controls and
  75  * preferences from the server.
  76  *
  77  * user                 the username
  78  * pass                 his password
  79  * serv_response        The parameters returned from a Citadel USER or NEWU command
  80  */
  81 void become_logged_in(const StrBuf *user, const StrBuf *pass, StrBuf *serv_response)
  82 {
  83         wcsession *WCC = WC;
  84         StrBuf *Buf;
  85         StrBuf *FloorDiv;
  86
  87         WCC->logged_in = 1;
  88
  89         if (WCC->wc_fullname == NULL)
  90                 WCC->wc_fullname = NewStrBufPlain(NULL, StrLength(serv_response));
  91         StrBufExtract_token(WCC->wc_fullname, serv_response, 0, '|');
  92         StrBufCutLeft(WCC->wc_fullname, 4 );
  93
  94         if (WCC->wc_username == NULL)
  95                 WCC->wc_username = NewStrBufDup(user);
  96         else {
  97                 FlushStrBuf(WCC->wc_username);
  98                 StrBufAppendBuf(WCC->wc_username, user, 0);
  99         }
 100
 101         if (WCC->wc_password == NULL)
 102                 WCC->wc_password = NewStrBufDup(pass);
 103         else {
 104                 FlushStrBuf(WCC->wc_password);
 105                 StrBufAppendBuf(WCC->wc_password, pass, 0);
 106         }
 107
 108         WCC->axlevel = StrBufExtract_int(serv_response, 1, '|');
 109         if (WCC->axlevel >= 6) {
 110                 WCC->is_aide = 1;
 111         }
 112
 113         load_preferences();
 114
 115         Buf = NewStrBuf();
 116         serv_puts("CHEK");
 117         StrBuf_ServGetln(Buf);
 118         if (GetServerStatus(Buf, NULL) == 2) {
 119                 const char *pch;
 120
 121                 pch = ChrPtr(Buf) + 4;
 122                 /*WCC->new_mail  =*/ StrBufExtractNext_long(Buf, &pch, '|');
 123                 WCC->need_regi = StrBufExtractNext_long(Buf, &pch, '|');
 124                 WCC->need_vali = StrBufExtractNext_long(Buf, &pch, '|');
 125                 if (WCC->cs_inet_email == NULL)
 126                         WCC->cs_inet_email  = NewStrBuf();
 127                 StrBufExtract_NextToken(WCC->cs_inet_email, Buf, &pch, '|');
 128         }
 129         get_preference("floordiv_expanded", &FloorDiv);
 130         WCC->floordiv_expanded = FloorDiv;
 131         FreeStrBuf(&Buf);
 132         FlushRoomlist();
 133 }
 134
 135
 136 /*
 137  * modal/ajax version of 'login' (username and password)
 138  */
 139 void ajax_login_username_password(void) {
 140         StrBuf *Buf = NewStrBuf();
 141
 142         serv_printf("USER %s", bstr("name"));
 143         StrBuf_ServGetln(Buf);
 144         if (GetServerStatus(Buf, NULL) == 3) {
 145                 serv_printf("PASS %s", bstr("pass"));
 146                 StrBuf_ServGetln(Buf);
 147                 if (GetServerStatus(Buf, NULL) == 2) {
 148                         become_logged_in(sbstr("name"), sbstr("pass"), Buf);
 149                 }
 150         }
 151
 152         /* The client is expecting to read back a citadel protocol response */
 153         wc_printf("%s", ChrPtr(Buf));
 154         FreeStrBuf(&Buf);
 155 }
 156
 157
 158
 159 /*
 160  * modal/ajax version of 'new user' (username and password)
 161  */
 162 void ajax_login_newuser(void) {
 163         StrBuf *NBuf = NewStrBuf();
 164         StrBuf *SBuf = NewStrBuf();
 165
 166         serv_printf("NEWU %s", bstr("name"));
 167         StrBuf_ServGetln(NBuf);
 168         if (GetServerStatus(NBuf, NULL) == 2) {
 169                 become_logged_in(sbstr("name"), sbstr("pass"), NBuf);
 170                 serv_printf("SETP %s", bstr("pass"));
 171                 StrBuf_ServGetln(SBuf);
 172         }
 173
 174         /* The client is expecting to read back a citadel protocol response */
 175         wc_printf("%s", ChrPtr(NBuf));
 176         FreeStrBuf(&NBuf);
 177         FreeStrBuf(&SBuf);
 178 }
 179
 180
 181
 182 /*
 183  * Try to create an account manually after an OpenID was verified
 184  */
 185 void openid_manual_create(void)
 186 {
 187         StrBuf *Buf;
 188
 189         /* Did the user change his mind?  Pack up and go home. */
 190         if (havebstr("exit_action")) {
 191                 begin_burst();
 192                 output_headers(1, 0, 0, 0, 1, 0);
 193                 do_template("authpopup_finished");
 194                 end_burst();
 195                 return;
 196         }
 197
 198
 199         /* Ok, let's give this a try.  Can we create the new user? */
 200
 201         Buf = NewStrBuf();
 202         serv_printf("OIDC %s", bstr("name"));
 203         StrBuf_ServGetln(Buf);
 204         if (GetServerStatus(Buf, NULL) == 2) {
 205                 StrBuf *gpass;
 206
 207                 gpass = NewStrBuf();
 208                 serv_puts("SETP GENERATE_RANDOM_PASSWORD");
 209                 StrBuf_ServGetln(gpass);
 210                 StrBufCutLeft(gpass, 4);
 211                 become_logged_in(sbstr("name"), gpass, Buf);
 212                 FreeStrBuf(&gpass);
 213         }
 214         FreeStrBuf(&Buf);
 215
 216         /* Did we manage to log in?  If so, continue with the normal flow... */
 217         if (WC->logged_in) {
 218                 if (WC->logged_in) {
 219                         begin_burst();
 220                         output_headers(1, 0, 0, 0, 1, 0);
 221                         do_template("authpopup_finished");
 222                         end_burst();
 223                 }
 224         } else {
 225                 /* Still no good!  Go back to teh dialog to select a username */
 226                 const StrBuf *Buf;
 227                 putbstr("__claimed_id", NewStrBufDup(sbstr("openid_url")));
 228                 Buf = sbstr("name");
 229                 if (StrLength(Buf) > 0)
 230                         putbstr("__username", NewStrBufDup(Buf));
 231                 begin_burst();
 232                 output_headers(1, 0, 0, 0, 1, 0);
 233                 wc_printf("<html><body>");
 234                 do_template("openid_manual_create");
 235                 wc_printf("</body></html>");
 236                 end_burst();
 237         }
 238
 239 }
 240
 241
 242 /*
 243  * Perform authentication using OpenID
 244  * assemble the checkid_setup request and then redirect to the user's identity provider
 245  */
 246 void do_openid_login(void)
 247 {
 248         char buf[4096];
 249
 250         snprintf(buf, sizeof buf,
 251                 "OIDS %s|%s/finalize_openid_login|%s",
 252                 bstr("openid_url"),
 253                 ChrPtr(site_prefix),
 254                 ChrPtr(site_prefix)
 255         );
 256
 257         serv_puts(buf);
 258         serv_getln(buf, sizeof buf);
 259         if (buf[0] == '2') {
 260                 syslog(LOG_DEBUG, "OpenID server contacted; redirecting to %s\n", &buf[4]);
 261                 http_redirect(&buf[4]);
 262                 return;
 263         }
 264
 265         begin_burst();
 266         output_headers(1, 0, 0, 0, 1, 0);
 267         wc_printf("<html><body>");
 268         escputs(&buf[4]);
 269         wc_printf("</body></html>");
 270         end_burst();
 271 }
 272
 273
 274 /*
 275  * Complete the authentication using OpenID
 276  * This function handles the positive or negative assertion from the user's Identity Provider
 277  */
 278 void finalize_openid_login(void)
 279 {
 280         StrBuf *Buf;
 281         wcsession *WCC = WC;
 282         int linecount = 0;
 283         StrBuf *result = NULL;
 284         StrBuf *username = NULL;
 285         StrBuf *password = NULL;
 286         StrBuf *logged_in_response = NULL;
 287         StrBuf *claimed_id = NULL;
 288
 289         if (havebstr("openid.mode")) {
 290                 if (!strcasecmp(bstr("openid.mode"), "id_res")) {
 291                         Buf = NewStrBuf();
 292                         serv_puts("OIDF");
 293                         StrBuf_ServGetln(Buf);
 294                         if (GetServerStatus(Buf, NULL) == 8) {
 295                                 urlcontent *u;
 296                                 void *U;
 297                                 long HKLen;
 298                                 const char *HKey;
 299                                 HashPos *Cursor;
 300                                 int len;
 301
 302                                 Cursor = GetNewHashPos (WCC->Hdr->urlstrings, 0);
 303                                 while (GetNextHashPos(WCC->Hdr->urlstrings, Cursor, &HKLen, &HKey, &U)) {
 304                                         u = (urlcontent*) U;
 305                                         if (!strncasecmp(u->url_key, "openid.", 7)) {
 306                                                 serv_printf("%s|%s", &u->url_key[7], ChrPtr(u->url_data));
 307                                         }
 308                                 }
 309
 310                                 serv_puts("000");
 311
 312                                 linecount = 0;
 313                                 while (len = StrBuf_ServGetln(Buf),
 314                                        ((len >= 0) &&
 315                                         ((len != 3) || strcmp(ChrPtr(Buf), "000") )))
 316                                 {
 317                                         if (linecount == 0) result = NewStrBufDup(Buf);
 318                                         if (!strcasecmp(ChrPtr(result), "authenticate")) {
 319                                                 if (linecount == 1) {
 320                                                         username = NewStrBufDup(Buf);
 321                                                 }
 322                                                 else if (linecount == 2) {
 323                                                         password = NewStrBufDup(Buf);
 324                                                 }
 325                                                 else if (linecount == 3) {
 326                                                         logged_in_response = NewStrBufDup(Buf);
 327                                                 }
 328                                         }
 329                                         else if (!strcasecmp(ChrPtr(result), "verify_only")) {
 330                                                 if (linecount == 1) {
 331                                                         claimed_id = NewStrBufDup(Buf);
 332                                                 }
 333                                                 if (linecount == 2) {
 334                                                         username = NewStrBufDup(Buf);
 335                                                 }
 336                                         }
 337                                         ++linecount;
 338                                 }
 339                         }
 340                         FreeStrBuf(&Buf);
 341                 }
 342         }
 343
 344         /*
 345          * Is this an attempt to associate a new OpenID with an account that is already logged in?
 346          */
 347         if ( (WCC->logged_in) && (havebstr("attach_existing")) ) {
 348                 display_openids();
 349         }
 350
 351         /* If this operation logged us in, either by connecting with an existing account or by
 352          * auto-creating one using Simple Registration Extension, we're already on our way.
 353          */
 354         else if (!strcasecmp(ChrPtr(result), "authenticate")) {
 355                 become_logged_in(username, password, logged_in_response);
 356
 357                 /* Did we manage to log in?  If so, continue with the normal flow... */
 358                 if (WC->logged_in) {
 359                         begin_burst();
 360                         output_headers(1, 0, 0, 0, 1, 0);
 361                         do_template("authpopup_finished");
 362                         end_burst();
 363                 } else {
 364                         begin_burst();
 365                         output_headers(1, 0, 0, 0, 1, 0);
 366                         wc_printf("<html><body>");
 367                         wc_printf(_("An error has occurred."));
 368                         wc_printf("</body></html>");
 369                         end_burst();
 370                 }
 371         }
 372
 373         /* The specified OpenID was verified but the desired user name was either not specified via SRE
 374          * or conflicts with an existing user.  Either way the user will need to specify a new name.
 375          */
 376         else if (!strcasecmp(ChrPtr(result), "verify_only")) {
 377                 putbstr("__claimed_id", claimed_id);
 378                 claimed_id = NULL;
 379                 if (StrLength(username) > 0) {
 380                         putbstr("__username", username);
 381                         username = NULL;
 382                 }
 383                 begin_burst();
 384                 output_headers(1, 0, 0, 0, 1, 0);
 385                 wc_printf("<html><body>");
 386                 do_template("openid_manual_create");
 387                 wc_printf("</body></html>");
 388                 end_burst();
 389         }
 390
 391         /* Something went VERY wrong if we get to this point */
 392         else {
 393                 syslog(LOG_DEBUG, "finalize_openid_login() failed to do anything.  This is a code problem.\n");
 394                 begin_burst();
 395                 output_headers(1, 0, 0, 0, 1, 0);
 396                 wc_printf("<html><body>");
 397                 wc_printf(_("An error has occurred."));
 398                 wc_printf("</body></html>");
 399                 end_burst();
 400         }
 401
 402         FreeStrBuf(&result);
 403         FreeStrBuf(&username);
 404         FreeStrBuf(&password);
 405         FreeStrBuf(&claimed_id);
 406         FreeStrBuf(&logged_in_response);
 407 }
 408
 409
 410 /*
 411  * Display a welcome screen to the user.
 412  */
 413 void do_welcome(void) {
 414         StrBuf *Buf;
 415         /*
 416          * Go to the user's preferred start page
 417          */
 418         if (!get_preference("startpage", &Buf)) {
 419                 Buf = NewStrBuf ();
 420                 StrBufPrintf(Buf, "dotskip?room=_BASEROOM_");
 421                 set_preference("startpage", Buf, 1);
 422         }
 423         if (ChrPtr(Buf)[0] == '/') {
 424                 StrBufCutLeft(Buf, 1);
 425         }
 426         if (StrLength(Buf) == 0) {
 427                 StrBufAppendBufPlain(Buf, "dotgoto?room=_BASEROOM_", -1, 0);
 428         }
 429         syslog(LOG_DEBUG, "Redirecting to user's start page: %s\n", ChrPtr(Buf));
 430         http_redirect(ChrPtr(Buf));
 431 }
 432
 433
 434 /*
 435  * Disconnect from the Citadel server, and end this WebCit session
 436  */
 437 void end_webcit_session(void) {
 438         serv_puts("QUIT");
 439         WC->killthis = 1;
 440         /* close() of citadel socket will be done by do_housekeeping() */
 441 }
 442
 443
 444 /*
 445  * Log out the session with the Citadel server
 446  */
 447 void do_logout(void)
 448 {
 449         wcsession *WCC = WC;
 450         char buf[SIZ];
 451
 452         FlushStrBuf(WCC->wc_username);
 453         FlushStrBuf(WCC->wc_password);
 454         FlushStrBuf(WCC->wc_fullname);
 455         FlushRoomlist();
 456
 457         serv_puts("LOUT");
 458         serv_getln(buf, sizeof buf);
 459         WCC->logged_in = 0;
 460
 461         FlushStrBuf(WCC->CurRoom.name);
 462
 463         /* Calling output_headers() this way causes the cookies to be un-set */
 464         output_headers(1, 1, 0, 1, 0, 0);
 465         do_template("logout");
 466         if ((WCC->serv_info != NULL) && WCC->serv_info->serv_supports_guest) {
 467                 display_default_landing_page();
 468                 return;
 469         }
 470
 471         wDumpContent(2);
 472         end_webcit_session();
 473 }
 474
 475
 476 /*
 477  * Special page for monitoring scripts etc
 478  */
 479 void monitor(void)
 480 {
 481         output_headers(0, 0, 0, 0, 0, 0);
 482
 483         hprintf("Content-type: text/plain\r\n"
 484                 "Server: " PACKAGE_STRING "\r\n"
 485                 "Connection: close\r\n"
 486         );
 487         begin_burst();
 488
 489         wc_printf("Connection to Citadel server in %s : %s\r\n", ctdl_dir,
 490                 (WC->connected ? "SUCCESS" : "FAIL")
 491         );
 492
 493         wDumpContent(0);
 494 }
 495
 496
 497 /*
 498  * validate new users
 499  */
 500 void validate(void)
 501 {
 502         char cmd[SIZ];
 503         char user[SIZ];
 504         char buf[SIZ];
 505         int a;
 506
 507         output_headers(1, 1, 1, 0, 0, 0);
 508
 509         do_template("box_begin_1");
 510         StrBufAppendBufPlain(WC->WBuf, _("Validate new users"), -1, 0);
 511         do_template("box_begin_2");
 512
 513         /* If the user just submitted a validation, process it... */
 514         safestrncpy(buf, bstr("user"), sizeof buf);
 515         if (!IsEmptyStr(buf)) {
 516                 if (havebstr("axlevel")) {
 517                         serv_printf("VALI %s|%s", buf, bstr("axlevel"));
 518                         serv_getln(buf, sizeof buf);
 519                         if (buf[0] != '2') {
 520                                 wc_printf("<b>%s</b><br>\n", &buf[4]);
 521                         }
 522                 }
 523         }
 524
 525         /* Now see if any more users require validation. */
 526         serv_puts("GNUR");
 527         serv_getln(buf, sizeof buf);
 528         if (buf[0] == '2') {
 529                 wc_printf("<b>");
 530                 wc_printf(_("No users require validation at this time."));
 531                 wc_printf("</b><br>\n");
 532                 wDumpContent(1);
 533                 return;
 534         }
 535         if (buf[0] != '3') {
 536                 wc_printf("<b>%s</b><br>\n", &buf[4]);
 537                 wDumpContent(1);
 538                 return;
 539         }
 540
 541         wc_printf("<table class=\"auth_validate\"><tr><td>\n");
 542         wc_printf("<div id=\"validate\">");
 543
 544         safestrncpy(user, &buf[4], sizeof user);
 545         serv_printf("GREG %s", user);
 546         serv_getln(cmd, sizeof cmd);
 547         if (cmd[0] == '1') {
 548                 a = 0;
 549                 do {
 550                         serv_getln(buf, sizeof buf);
 551                         ++a;
 552                         if (a == 1)
 553                                 wc_printf("#%s<br><H1>%s</H1>",
 554                                         buf, &cmd[4]);
 555                         if (a == 2) {
 556                                 char *pch;
 557                                 int haveChar = 0;
 558                                 int haveNum = 0;
 559                                 int haveOther = 0;
 560                                 int haveLong = 0;
 561                                 pch = buf;
 562                                 while (!IsEmptyStr(pch))
 563                                 {
 564                                         if (isdigit(*pch))
 565                                                 haveNum = 1;
 566                                         else if (isalpha(*pch))
 567                                                 haveChar = 1;
 568                                         else
 569                                                 haveOther = 1;
 570                                         pch ++;
 571                                 }
 572                                 if (pch - buf > 7)
 573                                         haveLong = 1;
 574                                 switch (haveLong +
 575                                         haveChar +
 576                                         haveNum +
 577                                         haveOther)
 578                                 {
 579                                 case 0:
 580                                         pch = _("very weak");
 581                                         break;
 582                                 case 1:
 583                                         pch = _("weak");
 584                                         break;
 585                                 case 2:
 586                                         pch = _("ok");
 587                                         break;
 588                                 case 3:
 589                                 default:
 590                                         pch = _("strong");
 591                                 }
 592
 593                                 wc_printf("PW: %s<br>\n", pch);
 594                         }
 595                         if (a == 3)
 596                                 wc_printf("%s<br>\n", buf);
 597                         if (a == 4)
 598                                 wc_printf("%s<br>\n", buf);
 599                         if (a == 5)
 600                                 wc_printf("%s, ", buf);
 601                         if (a == 6)
 602                                 wc_printf("%s ", buf);
 603                         if (a == 7)
 604                                 wc_printf("%s<br>\n", buf);
 605                         if (a == 8)
 606                                 wc_printf("%s<br>\n", buf);
 607                         if (a == 9)
 608                                 wc_printf(_("Current access level: %d (%s)\n"),
 609                                         atoi(buf), axdefs[atoi(buf)]);
 610                 } while (strcmp(buf, "000"));
 611         } else {
 612                 wc_printf("<H1>%s</H1>%s<br>\n", user, &cmd[4]);
 613         }
 614
 615         wc_printf("<hr />");
 616         wc_printf(_("Select access level for this user:"));
 617         wc_printf("<br>\n");
 618         for (a = 0; a <= 6; ++a) {
 619                 wc_printf("<a href=\"validate?nonce=%d?user=", WC->nonce);
 620                 urlescputs(user);
 621                 wc_printf("&axlevel=%d\">%s</A>&nbsp;&nbsp;&nbsp;\n",
 622                         a, axdefs[a]);
 623         }
 624         wc_printf("<br>\n");
 625
 626         wc_printf("</div>\n");
 627         wc_printf("</td></tr></table>\n");
 628         do_template("box_end");
 629         wDumpContent(1);
 630 }
 631
 632
 633 /*
 634  * Display form for registration.
 635  *
 636  * (Set during_login to 1 if this registration is being performed during
 637  * new user login and will require chaining to the proper screen.)
 638  */
 639 void display_reg(int during_login)
 640 {
 641         folder Room;
 642         StrBuf *Buf;
 643         message_summary *VCMsg = NULL;
 644         wc_mime_attachment *VCAtt = NULL;
 645         long vcard_msgnum;
 646
 647         Buf = NewStrBuf();
 648         memset(&Room, 0, sizeof(folder));
 649         if (goto_config_room(Buf, &Room) != 0) {
 650                 syslog(LOG_WARNING, "display_reg() exiting because goto_config_room() failed\n");
 651                 if (during_login) {
 652                         pop_destination();
 653                 }
 654                 else {
 655                         display_main_menu();
 656                 }
 657                 FreeStrBuf(&Buf);
 658                 FlushFolder(&Room);
 659                 return;
 660         }
 661         FlushFolder(&Room);
 662
 663         FreeStrBuf(&Buf);
 664         vcard_msgnum = locate_user_vcard_in_this_room(&VCMsg, &VCAtt);
 665         if (vcard_msgnum < 0L) {
 666                 syslog(LOG_WARNING, "display_reg() exiting because locate_user_vcard_in_this_room() failed\n");
 667                 if (during_login) {
 668                         pop_destination();
 669                 }
 670                 else {
 671                         display_main_menu();
 672                 }
 673                 return;
 674         }
 675
 676         if (during_login) {
 677                 do_edit_vcard(vcard_msgnum, "1", VCMsg, VCAtt, "pop", USERCONFIGROOM);
 678         }
 679         else {
 680                 StrBuf *ReturnTo;
 681                 ReturnTo = NewStrBufPlain(HKEY("display_main_menu?go="));
 682                 StrBufAppendBuf(ReturnTo, WC->CurRoom.name, 0);
 683                 do_edit_vcard(vcard_msgnum, "1", VCMsg, VCAtt, ChrPtr(ReturnTo), USERCONFIGROOM);
 684                 FreeStrBuf(&ReturnTo);
 685         }
 686
 687 }
 688
 689 /*
 690  * change password
 691  * if passwords match, propagate it to citserver.
 692  */
 693 void changepw(void)
 694 {
 695         StrBuf *Line;
 696         char newpass1[32], newpass2[32];
 697
 698         if (!havebstr("change_action")) {
 699                 AppendImportantMessage(_("Cancelled.  Password was not changed."), -1);
 700                 display_main_menu();
 701                 return;
 702         }
 703
 704         safestrncpy(newpass1, bstr("newpass1"), sizeof newpass1);
 705         safestrncpy(newpass2, bstr("newpass2"), sizeof newpass2);
 706
 707         if (strcasecmp(newpass1, newpass2)) {
 708                 AppendImportantMessage(_("They don't match.  Password was not changed."), -1);
 709                 do_template("menu_change_pw");
 710                 return;
 711         }
 712
 713         if (IsEmptyStr(newpass1)) {
 714                 AppendImportantMessage(_("Blank passwords are not allowed."), -1);
 715                 do_template("menu_change_pw");
 716                 return;
 717         }
 718
 719         Line = NewStrBuf();
 720         serv_printf("SETP %s", newpass1);
 721         StrBuf_ServGetln(Line);
 722         if (GetServerStatusMsg(Line, NULL, 1, 0) == 2) {
 723                 if (WC->wc_password == NULL)
 724                         WC->wc_password = NewStrBufPlain(
 725                                 ChrPtr(Line) + 4,
 726                                 StrLength(Line) - 4);
 727                 else {
 728                         FlushStrBuf(WC->wc_password);
 729                         StrBufAppendBufPlain(WC->wc_password,
 730                                              ChrPtr(Line) + 4,
 731                                              StrLength(Line) - 4, 0);
 732                 }
 733                 display_main_menu();
 734         }
 735         else {
 736                 do_template("menu_change_pw");
 737         }
 738         FreeStrBuf(&Line);
 739 }
 740
 741
 742 int ConditionalHaveAccessCreateRoom(StrBuf *Target, WCTemplputParams *TP)
 743 {
 744         StrBuf *Buf;
 745
 746         Buf = NewStrBuf();
 747         serv_puts("CRE8 0");
 748         StrBuf_ServGetln(Buf);
 749
 750         if (GetServerStatus(Buf, NULL) == 2) {
 751                 StrBufCutLeft(Buf, 4);
 752                 AppendImportantMessage(SKEY(Buf));
 753                 FreeStrBuf(&Buf);
 754                 return 0;
 755         }
 756         FreeStrBuf(&Buf);
 757         return 1;
 758 }
 759
 760
 761 int ConditionalAide(StrBuf *Target, WCTemplputParams *TP)
 762 {
 763         wcsession *WCC = WC;
 764         return (WCC != NULL) ? ((WCC->logged_in == 0)||(WC->is_aide == 0)) : 0;
 765 }
 766
 767
 768 int ConditionalIsLoggedIn(StrBuf *Target, WCTemplputParams *TP)
 769 {
 770         wcsession *WCC = WC;
 771         return (WCC != NULL) ? (WCC->logged_in == 0) : 0;
 772
 773 }
 774
 775
 776 /*
 777  * toggle the session over to a different language
 778  */
 779 void switch_language(void) {
 780         set_selected_language(bstr("lang"));
 781         pop_destination();
 782 }
 783
 784
 785 void _display_reg(void) {
 786         display_reg(0);
 787 }
 788
 789
 790 void Header_HandleAuth(StrBuf *Line, ParsedHttpHdrs *hdr)
 791 {
 792         if (hdr->HR.got_auth == NO_AUTH) /* don't override cookie auth... */
 793         {
 794                 if (strncasecmp(ChrPtr(Line), "Basic", 5) == 0) {
 795                         StrBufCutLeft(Line, 6);
 796                         StrBufDecodeBase64(Line);
 797                         hdr->HR.plainauth = Line;
 798                         hdr->HR.got_auth = AUTH_BASIC;
 799                 }
 800                 else
 801                         syslog(LOG_WARNING, "Authentication scheme not supported! [%s]\n", ChrPtr(Line));
 802         }
 803 }
 804
 805
 806 void CheckAuthBasic(ParsedHttpHdrs *hdr)
 807 {
 808 /*
 809   todo: enable this if we can have other sessions than authenticated ones.
 810         if (hdr->DontNeedAuth)
 811                 return;
 812 */
 813         StrBufAppendBufPlain(hdr->HR.plainauth, HKEY(":"), 0);
 814         StrBufAppendBuf(hdr->HR.plainauth, hdr->HR.user_agent, 0);
 815 }
 816
 817
 818 void GetAuthBasic(ParsedHttpHdrs *hdr)
 819 {
 820         const char *Pos = NULL;
 821         if (hdr->c_username == NULL)
 822                 hdr->c_username = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_USER));
 823         if (hdr->c_password == NULL)
 824                 hdr->c_password = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_PASS));
 825         StrBufExtract_NextToken(hdr->c_username, hdr->HR.plainauth, &Pos, ':');
 826         StrBufExtract_NextToken(hdr->c_password, hdr->HR.plainauth, &Pos, ':');
 827 }
 828
 829
 830 void Header_HandleCookie(StrBuf *Line, ParsedHttpHdrs *hdr)
 831 {
 832         const char *pch;
 833 /*
 834   todo: enable this if we can have other sessions than authenticated ones.
 835         if (hdr->DontNeedAuth)
 836                 return;
 837 */
 838         pch = strstr(ChrPtr(Line), "webcit=");
 839         if (pch == NULL) {
 840                 return;
 841         }
 842
 843         hdr->HR.RawCookie = Line;
 844         StrBufCutLeft(hdr->HR.RawCookie, (pch - ChrPtr(hdr->HR.RawCookie)) + 7);
 845         StrBufDecodeHex(hdr->HR.RawCookie);
 846
 847         cookie_to_stuff(Line, &hdr->HR.desired_session,
 848                         hdr->c_username,
 849                         hdr->c_password,
 850                         hdr->c_roomname,
 851                         hdr->c_language
 852         );
 853         hdr->HR.got_auth = AUTH_COOKIE;
 854 }
 855
 856
 857 void
 858 HttpNewModule_AUTH
 859 (ParsedHttpHdrs *httpreq)
 860 {
 861         httpreq->c_username = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_USER));
 862         httpreq->c_password = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_PASS));
 863         httpreq->c_roomname = NewStrBuf();
 864         httpreq->c_language = NewStrBuf();
 865 }
 866
 867
 868 void
 869 HttpDetachModule_AUTH
 870 (ParsedHttpHdrs *httpreq)
 871 {
 872         FLUSHStrBuf(httpreq->c_username);
 873         FLUSHStrBuf(httpreq->c_password);
 874         FLUSHStrBuf(httpreq->c_roomname);
 875         FLUSHStrBuf(httpreq->c_language);
 876 }
 877
 878
 879 void
 880 HttpDestroyModule_AUTH
 881 (ParsedHttpHdrs *httpreq)
 882 {
 883         FreeStrBuf(&httpreq->c_username);
 884         FreeStrBuf(&httpreq->c_password);
 885         FreeStrBuf(&httpreq->c_roomname);
 886         FreeStrBuf(&httpreq->c_language);
 887 }
 888
 889
 890 void
 891 InitModule_AUTH
 892 (void)
 893 {
 894         initialize_axdefs();
 895         RegisterHeaderHandler(HKEY("COOKIE"), Header_HandleCookie);
 896         RegisterHeaderHandler(HKEY("AUTHORIZATION"), Header_HandleAuth);
 897
 898         /* no url pattern at all? Show login. */
 899         WebcitAddUrlHandler(HKEY(""), "", 0, do_welcome, ANONYMOUS|COOKIEUNNEEDED);
 900
 901         WebcitAddUrlHandler(HKEY("do_welcome"), "", 0, do_welcome, ANONYMOUS|COOKIEUNNEEDED);
 902         WebcitAddUrlHandler(HKEY("openid_login"), "", 0, do_openid_login, ANONYMOUS);
 903         WebcitAddUrlHandler(HKEY("finalize_openid_login"), "", 0, finalize_openid_login, ANONYMOUS);
 904         WebcitAddUrlHandler(HKEY("openid_manual_create"), "", 0, openid_manual_create, ANONYMOUS);
 905         WebcitAddUrlHandler(HKEY("validate"), "", 0, validate, 0);
 906         WebcitAddUrlHandler(HKEY("do_welcome"), "", 0, do_welcome, 0);
 907         WebcitAddUrlHandler(HKEY("display_reg"), "", 0, _display_reg, 0);
 908         WebcitAddUrlHandler(HKEY("changepw"), "", 0, changepw, 0);
 909         WebcitAddUrlHandler(HKEY("termquit"), "", 0, do_logout, 0);
 910         WebcitAddUrlHandler(HKEY("do_logout"), "", 0, do_logout, ANONYMOUS|COOKIEUNNEEDED|FORCE_SESSIONCLOSE);
 911         WebcitAddUrlHandler(HKEY("monitor"), "", 0, monitor, ANONYMOUS|COOKIEUNNEEDED|FORCE_SESSIONCLOSE);
 912         WebcitAddUrlHandler(HKEY("ajax_login_username_password"), "", 0, ajax_login_username_password, AJAX|ANONYMOUS);
 913         WebcitAddUrlHandler(HKEY("ajax_login_newuser"), "", 0, ajax_login_newuser, AJAX|ANONYMOUS);
 914         WebcitAddUrlHandler(HKEY("switch_language"), "", 0, switch_language, ANONYMOUS);
 915         RegisterConditional("COND:AIDE", 2, ConditionalAide, CTX_NONE);
 916         RegisterConditional("COND:LOGGEDIN", 2, ConditionalIsLoggedIn, CTX_NONE);
 917         RegisterConditional("COND:MAY_CREATE_ROOM", 2,  ConditionalHaveAccessCreateRoom, CTX_NONE);
 918         return;
 919 }
 920
 921
 922 void
 923 SessionDestroyModule_AUTH
 924 (wcsession *sess)
 925 {
 926         FreeStrBuf(&sess->wc_username);
 927         FreeStrBuf(&sess->wc_fullname);
 928         FreeStrBuf(&sess->wc_password);
 929         FreeStrBuf(&sess->httpauth_pass);
 930         FreeStrBuf(&sess->cs_inet_email);
 931 }