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                                 abs(HashLittle(ctdlhost, strlen(ctdlhost))),
 437                                 abs(HashLittle(ctdlport, strlen(ctdlport)))
 438                         );
 439
 440                         fp = fopen(wizard_filename, "r");
 441                         if (fp != NULL) {
 442                                 fgets(buf, sizeof buf, fp);
 443                                 buf[strlen(buf)-1] = 0;
 444                                 fclose(fp);
 445                                 if (atoi(buf) == serv_info.serv_rev_level) {
 446                                         setup_wizard = 1;       /* already run */
 447                                 }
 448                         }
 449                 }
 450
 451                 if (!setup_wizard) {
 452                         http_redirect("setup_wizard");
 453                 }
 454         }
 455 #endif
 456
 457         /*
 458          * Go to the user's preferred start page
 459          */
 460         if (!get_preference("startpage", &Buf)) {
 461                 Buf = NewStrBuf ();
 462                 StrBufPrintf(Buf, "dotskip?room=_BASEROOM_");
 463                 set_preference("startpage", Buf, 1);
 464         }
 465         if (ChrPtr(Buf)[0] == '/') {
 466                 StrBufCutLeft(Buf, 1);
 467         }
 468         if (StrLength(Buf) == 0) {
 469                 StrBufAppendBufPlain(Buf, "dotgoto?room=_BASEROOM_", -1, 0);
 470         }
 471         syslog(9, "Redirecting to user's start page: %s\n", ChrPtr(Buf));
 472         http_redirect(ChrPtr(Buf));
 473 }
 474
 475
 476 /*
 477  * Disconnect from the Citadel server, and end this WebCit session
 478  */
 479 void end_webcit_session(void) {
 480
 481         serv_puts("QUIT");
 482         WC->killthis = 1;
 483         /* close() of citadel socket will be done by do_housekeeping() */
 484 }
 485
 486
 487 /*
 488  * Log out the session with the Citadel server
 489  */
 490 void do_logout(void)
 491 {
 492         wcsession *WCC = WC;
 493         char buf[SIZ];
 494
 495         FlushStrBuf(WCC->wc_username);
 496         FlushStrBuf(WCC->wc_password);
 497         FlushStrBuf(WCC->wc_fullname);
 498         FlushRoomlist();
 499
 500         serv_puts("LOUT");
 501         serv_getln(buf, sizeof buf);
 502         WCC->logged_in = 0;
 503
 504         FlushStrBuf(WCC->CurRoom.name);
 505
 506         /* Calling output_headers() this way causes the cookies to be un-set */
 507         output_headers(1, 1, 0, 1, 0, 0);
 508
 509         /* For sites in guest mode, redirect to the landing page after we're logged out */
 510         if (WC->serv_info->serv_supports_guest) {
 511                 wc_printf("     <script type=\"text/javascript\">       "
 512                         "       window.location='/';                    "
 513                         "       </script>                               "
 514                 );
 515         }
 516
 517         wc_printf("<div id=\"logout_screen\">");
 518         wc_printf("<div class=\"box\">");
 519         wc_printf("<div class=\"boxlabel\">");
 520         wc_printf(_("Log off"));
 521         wc_printf("</div><div class=\"boxcontent\">");
 522         serv_puts("MESG goodbye");
 523         serv_getln(buf, sizeof buf);
 524
 525         if (WCC->serv_sock >= 0) {
 526                 if (buf[0] == '1') {
 527                         fmout("'CENTER'");
 528                 } else {
 529                         wc_printf("Goodbye\n");
 530                 }
 531         }
 532         else {
 533                 wc_printf(_("This program was unable to connect or stay "
 534                         "connected to the Citadel server.  Please report "
 535                         "this problem to your system administrator.")
 536                 );
 537                 wc_printf("<a href=\"http://www.citadel.org/doku.php/"
 538                         "faq:mastering_your_os:net#netstat\">%s</a>",
 539                         _("Read More..."));
 540         }
 541
 542         wc_printf("<hr /><div class=\"buttons\"> "
 543                 "<span class=\"button_link\"><a href=\".\">");
 544         wc_printf(_("Log in again"));
 545         wc_printf("</a></span>");
 546         wc_printf("</div></div></div>\n");
 547         if (WC->serv_info->serv_supports_guest) {
 548                 display_default_landing_page();
 549                 return;
 550         }
 551
 552         wDumpContent(2);
 553         end_webcit_session();
 554 }
 555
 556
 557 /*
 558  * Special page for monitoring scripts etc
 559  */
 560 void monitor(void)
 561 {
 562         output_headers(0, 0, 0, 0, 0, 0);
 563
 564         hprintf("Content-type: text/plain\r\n"
 565                 "Server: " PACKAGE_STRING "\r\n"
 566                 "Connection: close\r\n"
 567         );
 568         begin_burst();
 569
 570         wc_printf("Connection to Citadel server at %s:%s : %s\r\n",
 571                 ctdlhost, ctdlport,
 572                 (WC->connected ? "SUCCESS" : "FAIL")
 573         );
 574
 575         wDumpContent(0);
 576 }
 577
 578
 579 /*
 580  * validate new users
 581  */
 582 void validate(void)
 583 {
 584         char cmd[SIZ];
 585         char user[SIZ];
 586         char buf[SIZ];
 587         int a;
 588
 589         output_headers(1, 1, 1, 0, 0, 0);
 590
 591         do_template("box_begin_1");
 592         StrBufAppendBufPlain(WC->WBuf, _("Validate new users"), -1, 0);
 593         do_template("box_begin_2");
 594
 595         /* If the user just submitted a validation, process it... */
 596         safestrncpy(buf, bstr("user"), sizeof buf);
 597         if (!IsEmptyStr(buf)) {
 598                 if (havebstr("axlevel")) {
 599                         serv_printf("VALI %s|%s", buf, bstr("axlevel"));
 600                         serv_getln(buf, sizeof buf);
 601                         if (buf[0] != '2') {
 602                                 wc_printf("<b>%s</b><br>\n", &buf[4]);
 603                         }
 604                 }
 605         }
 606
 607         /* Now see if any more users require validation. */
 608         serv_puts("GNUR");
 609         serv_getln(buf, sizeof buf);
 610         if (buf[0] == '2') {
 611                 wc_printf("<b>");
 612                 wc_printf(_("No users require validation at this time."));
 613                 wc_printf("</b><br>\n");
 614                 wDumpContent(1);
 615                 return;
 616         }
 617         if (buf[0] != '3') {
 618                 wc_printf("<b>%s</b><br>\n", &buf[4]);
 619                 wDumpContent(1);
 620                 return;
 621         }
 622
 623         wc_printf("<table class=\"auth_validate\"><tr><td>\n");
 624         wc_printf("<div id=\"validate\">");
 625
 626         safestrncpy(user, &buf[4], sizeof user);
 627         serv_printf("GREG %s", user);
 628         serv_getln(cmd, sizeof cmd);
 629         if (cmd[0] == '1') {
 630                 a = 0;
 631                 do {
 632                         serv_getln(buf, sizeof buf);
 633                         ++a;
 634                         if (a == 1)
 635                                 wc_printf("#%s<br><H1>%s</H1>",
 636                                         buf, &cmd[4]);
 637                         if (a == 2) {
 638                                 char *pch;
 639                                 int haveChar = 0;
 640                                 int haveNum = 0;
 641                                 int haveOther = 0;
 642                                 int haveLong = 0;
 643                                 pch = buf;
 644                                 while (!IsEmptyStr(pch))
 645                                 {
 646                                         if (isdigit(*pch))
 647                                                 haveNum = 1;
 648                                         else if (isalpha(*pch))
 649                                                 haveChar = 1;
 650                                         else
 651                                                 haveOther = 1;
 652                                         pch ++;
 653                                 }
 654                                 if (pch - buf > 7)
 655                                         haveLong = 1;
 656                                 switch (haveLong +
 657                                         haveChar +
 658                                         haveNum +
 659                                         haveOther)
 660                                 {
 661                                 case 0:
 662                                         pch = _("very weak");
 663                                         break;
 664                                 case 1:
 665                                         pch = _("weak");
 666                                         break;
 667                                 case 2:
 668                                         pch = _("ok");
 669                                         break;
 670                                 case 3:
 671                                 default:
 672                                         pch = _("strong");
 673                                 }
 674
 675                                 wc_printf("PW: %s<br>\n", pch);
 676                         }
 677                         if (a == 3)
 678                                 wc_printf("%s<br>\n", buf);
 679                         if (a == 4)
 680                                 wc_printf("%s<br>\n", buf);
 681                         if (a == 5)
 682                                 wc_printf("%s, ", buf);
 683                         if (a == 6)
 684                                 wc_printf("%s ", buf);
 685                         if (a == 7)
 686                                 wc_printf("%s<br>\n", buf);
 687                         if (a == 8)
 688                                 wc_printf("%s<br>\n", buf);
 689                         if (a == 9)
 690                                 wc_printf(_("Current access level: %d (%s)\n"),
 691                                         atoi(buf), axdefs[atoi(buf)]);
 692                 } while (strcmp(buf, "000"));
 693         } else {
 694                 wc_printf("<H1>%s</H1>%s<br>\n", user, &cmd[4]);
 695         }
 696
 697         wc_printf("<hr />");
 698         wc_printf(_("Select access level for this user:"));
 699         wc_printf("<br>\n");
 700         for (a = 0; a <= 6; ++a) {
 701                 wc_printf("<a href=\"validate?nonce=%d?user=", WC->nonce);
 702                 urlescputs(user);
 703                 wc_printf("&axlevel=%d\">%s</A>&nbsp;&nbsp;&nbsp;\n",
 704                         a, axdefs[a]);
 705         }
 706         wc_printf("<br>\n");
 707
 708         wc_printf("</div>\n");
 709         wc_printf("</td></tr></table>\n");
 710         do_template("box_end");
 711         wDumpContent(1);
 712 }
 713
 714
 715 /*
 716  * Display form for registration.
 717  *
 718  * (Set during_login to 1 if this registration is being performed during
 719  * new user login and will require chaining to the proper screen.)
 720  */
 721 void display_reg(int during_login)
 722 {
 723         folder Room;
 724         StrBuf *Buf;
 725         message_summary *VCMsg = NULL;
 726         wc_mime_attachment *VCAtt = NULL;
 727         long vcard_msgnum;
 728
 729         Buf = NewStrBuf();
 730         memset(&Room, 0, sizeof(folder));
 731         if (goto_config_room(Buf, &Room) != 0) {
 732                 syslog(9, "display_reg() exiting because goto_config_room() failed\n");
 733                 if (during_login) {
 734                         pop_destination();
 735                 }
 736                 else {
 737                         display_main_menu();
 738                 }
 739                 FreeStrBuf(&Buf);
 740                 FlushFolder(&Room);
 741                 return;
 742         }
 743         FlushFolder(&Room);
 744
 745         FreeStrBuf(&Buf);
 746         vcard_msgnum = locate_user_vcard_in_this_room(&VCMsg, &VCAtt);
 747         if (vcard_msgnum < 0L) {
 748                 syslog(9, "display_reg() exiting because locate_user_vcard_in_this_room() failed\n");
 749                 if (during_login) {
 750                         pop_destination();
 751                 }
 752                 else {
 753                         display_main_menu();
 754                 }
 755                 return;
 756         }
 757
 758         if (during_login) {
 759                 do_edit_vcard(vcard_msgnum, "1", VCMsg, VCAtt, "pop", USERCONFIGROOM);
 760         }
 761         else {
 762                 StrBuf *ReturnTo;
 763                 ReturnTo = NewStrBufPlain(HKEY("display_main_menu?go="));
 764                 StrBufAppendBuf(ReturnTo, WC->CurRoom.name, 0);
 765                 do_edit_vcard(vcard_msgnum, "1", VCMsg, VCAtt, ChrPtr(ReturnTo), USERCONFIGROOM);
 766                 FreeStrBuf(&ReturnTo);
 767         }
 768
 769 }
 770
 771
 772 /*
 773  * display form for changing your password
 774  */
 775 void display_changepw(void)
 776 {
 777         wcsession *WCC = WC;
 778         WCTemplputParams SubTP;
 779         char buf[SIZ];
 780         StrBuf *Buf;
 781         output_headers(1, 1, 1, 0, 0, 0);
 782
 783         Buf = NewStrBufPlain(_("Change your password"), -1);
 784         memset(&SubTP, 0, sizeof(WCTemplputParams));
 785         SubTP.Filter.ContextType = CTX_STRBUF;
 786         SubTP.Context = Buf;
 787         DoTemplate(HKEY("box_begin"), NULL, &SubTP);
 788
 789         FreeStrBuf(&Buf);
 790
 791         if (StrLength(WCC->ImportantMsg) > 0) {
 792                 wc_printf("<span class=\"errormsg\">"
 793                           "%s</span><br>\n", ChrPtr(WCC->ImportantMsg));
 794                 FlushStrBuf(WCC->ImportantMsg);
 795         }
 796
 797         serv_puts("MESG changepw");
 798         serv_getln(buf, sizeof buf);
 799         if (buf[0] == '1') {
 800                 fmout("CENTER");
 801         }
 802
 803         wc_printf("<form name=\"changepwform\" action=\"changepw\" method=\"post\">\n");
 804         wc_printf("<input type=\"hidden\" name=\"nonce\" value=\"%d\">\n", WC->nonce);
 805         wc_printf("<table class=\"altern\" ");
 806         wc_printf("<tr class=\"even\"><td>");
 807         wc_printf(_("Enter new password:"));
 808         wc_printf("</td><td>");
 809         wc_printf("<input type=\"password\" name=\"newpass1\" value=\"\" maxlength=\"20\"></td></tr>\n");
 810         wc_printf("<tr class=\"odd\"><td>");
 811         wc_printf(_("Enter it again to confirm:"));
 812         wc_printf("</td><td>");
 813         wc_printf("<input type=\"password\" name=\"newpass2\" value=\"\" maxlength=\"20\"></td></tr>\n");
 814         wc_printf("</table>\n");
 815
 816         wc_printf("<div class=\"buttons\">\n");
 817         wc_printf("<input type=\"submit\" name=\"change_action\" value=\"%s\">", _("Change password"));
 818         wc_printf("&nbsp;");
 819         wc_printf("<input type=\"submit\" name=\"cancel_action\" value=\"%s\">\n", _("Cancel"));
 820         wc_printf("</div>\n");
 821         wc_printf("</form>\n");
 822
 823         do_template("box_end");
 824         wDumpContent(1);
 825 }
 826
 827 /*
 828  * change password
 829  * if passwords match, propagate it to citserver.
 830  */
 831 void changepw(void)
 832 {
 833         StrBuf *Line;
 834         char newpass1[32], newpass2[32];
 835
 836         if (!havebstr("change_action")) {
 837                 AppendImportantMessage(_("Cancelled.  Password was not changed."), -1);
 838                 display_main_menu();
 839                 return;
 840         }
 841
 842         safestrncpy(newpass1, bstr("newpass1"), sizeof newpass1);
 843         safestrncpy(newpass2, bstr("newpass2"), sizeof newpass2);
 844
 845         if (strcasecmp(newpass1, newpass2)) {
 846                 AppendImportantMessage(_("They don't match.  Password was not changed."), -1);
 847                 display_changepw();
 848                 return;
 849         }
 850
 851         if (IsEmptyStr(newpass1)) {
 852                 AppendImportantMessage(_("Blank passwords are not allowed."), -1);
 853                 display_changepw();
 854                 return;
 855         }
 856
 857         Line = NewStrBuf();
 858         serv_printf("SETP %s", newpass1);
 859         StrBuf_ServGetln(Line);
 860         if (GetServerStatusMsg(Line, NULL, 1, 0) == 2) {
 861                 if (WC->wc_password == NULL)
 862                         WC->wc_password = NewStrBufPlain(
 863                                 ChrPtr(Line) + 4,
 864                                 StrLength(Line) - 4);
 865                 else {
 866                         FlushStrBuf(WC->wc_password);
 867                         StrBufAppendBufPlain(WC->wc_password,
 868                                              ChrPtr(Line) + 4,
 869                                              StrLength(Line) - 4, 0);
 870                 }
 871                 display_main_menu();
 872         }
 873         else {
 874                 display_changepw();
 875         }
 876         FreeStrBuf(&Line);
 877 }
 878
 879
 880 int ConditionalHaveAccessCreateRoom(StrBuf *Target, WCTemplputParams *TP)
 881 {
 882         StrBuf *Buf;
 883
 884         Buf = NewStrBuf();
 885         serv_puts("CRE8 0");
 886         StrBuf_ServGetln(Buf);
 887
 888         if (GetServerStatus(Buf, NULL) == 2) {
 889                 StrBufCutLeft(Buf, 4);
 890                 AppendImportantMessage(SKEY(Buf));
 891                 FreeStrBuf(&Buf);
 892                 return 0;
 893         }
 894         FreeStrBuf(&Buf);
 895         return 1;
 896 }
 897
 898
 899 int ConditionalAide(StrBuf *Target, WCTemplputParams *TP)
 900 {
 901         wcsession *WCC = WC;
 902         return (WCC != NULL) ? ((WCC->logged_in == 0)||(WC->is_aide == 0)) : 0;
 903 }
 904
 905
 906 int ConditionalIsLoggedIn(StrBuf *Target, WCTemplputParams *TP)
 907 {
 908         wcsession *WCC = WC;
 909         return (WCC != NULL) ? (WCC->logged_in == 0) : 0;
 910
 911 }
 912
 913
 914 /*
 915  * toggle the session over to a different language
 916  */
 917 void switch_language(void) {
 918         set_selected_language(bstr("lang"));
 919         pop_destination();
 920 }
 921
 922
 923 void _display_reg(void) {
 924         display_reg(0);
 925 }
 926
 927
 928 void Header_HandleAuth(StrBuf *Line, ParsedHttpHdrs *hdr)
 929 {
 930         if (hdr->HR.got_auth == NO_AUTH) /* don't override cookie auth... */
 931         {
 932                 if (strncasecmp(ChrPtr(Line), "Basic", 5) == 0) {
 933                         StrBufCutLeft(Line, 6);
 934                         StrBufDecodeBase64(Line);
 935                         hdr->HR.plainauth = Line;
 936                         hdr->HR.got_auth = AUTH_BASIC;
 937                 }
 938                 else
 939                         syslog(1, "Authentication scheme not supported! [%s]\n", ChrPtr(Line));
 940         }
 941 }
 942
 943
 944 void CheckAuthBasic(ParsedHttpHdrs *hdr)
 945 {
 946 /*
 947   todo: enable this if we can have other sessions than authenticated ones.
 948         if (hdr->DontNeedAuth)
 949                 return;
 950 */
 951         StrBufAppendBufPlain(hdr->HR.plainauth, HKEY(":"), 0);
 952         StrBufAppendBuf(hdr->HR.plainauth, hdr->HR.user_agent, 0);
 953         hdr->HR.SessionKey = hashlittle(SKEY(hdr->HR.plainauth), 89479832);
 954 /*
 955         syslog(1, "CheckAuthBasic: calculated sessionkey %ld\n",
 956                 hdr->HR.SessionKey);
 957 */
 958 }
 959
 960
 961 void GetAuthBasic(ParsedHttpHdrs *hdr)
 962 {
 963         const char *Pos = NULL;
 964         if (hdr->c_username == NULL)
 965                 hdr->c_username = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_USER));
 966         if (hdr->c_password == NULL)
 967                 hdr->c_password = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_PASS));
 968         StrBufExtract_NextToken(hdr->c_username, hdr->HR.plainauth, &Pos, ':');
 969         StrBufExtract_NextToken(hdr->c_password, hdr->HR.plainauth, &Pos, ':');
 970 }
 971
 972
 973 void Header_HandleCookie(StrBuf *Line, ParsedHttpHdrs *hdr)
 974 {
 975         const char *pch;
 976 /*
 977   todo: enable this if we can have other sessions than authenticated ones.
 978         if (hdr->DontNeedAuth)
 979                 return;
 980 */
 981         pch = strstr(ChrPtr(Line), "webcit=");
 982         if (pch == NULL) {
 983                 return;
 984         }
 985
 986         hdr->HR.RawCookie = Line;
 987         StrBufCutLeft(hdr->HR.RawCookie, (pch - ChrPtr(hdr->HR.RawCookie)) + 7);
 988         StrBufDecodeHex(hdr->HR.RawCookie);
 989
 990         cookie_to_stuff(Line, &hdr->HR.desired_session,
 991                         hdr->c_username,
 992                         hdr->c_password,
 993                         hdr->c_roomname,
 994                         hdr->c_language
 995         );
 996         hdr->HR.got_auth = AUTH_COOKIE;
 997 }
 998
 999
1000 void
1001 HttpNewModule_AUTH
1002 (ParsedHttpHdrs *httpreq)
1003 {
1004         httpreq->c_username = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_USER));
1005         httpreq->c_password = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_PASS));
1006         httpreq->c_roomname = NewStrBuf();
1007         httpreq->c_language = NewStrBuf();
1008 }
1009
1010
1011 void
1012 HttpDetachModule_AUTH
1013 (ParsedHttpHdrs *httpreq)
1014 {
1015         FLUSHStrBuf(httpreq->c_username);
1016         FLUSHStrBuf(httpreq->c_password);
1017         FLUSHStrBuf(httpreq->c_roomname);
1018         FLUSHStrBuf(httpreq->c_language);
1019 }
1020
1021
1022 void
1023 HttpDestroyModule_AUTH
1024 (ParsedHttpHdrs *httpreq)
1025 {
1026         FreeStrBuf(&httpreq->c_username);
1027         FreeStrBuf(&httpreq->c_password);
1028         FreeStrBuf(&httpreq->c_roomname);
1029         FreeStrBuf(&httpreq->c_language);
1030 }
1031
1032
1033 void
1034 InitModule_AUTH
1035 (void)
1036 {
1037         initialize_axdefs();
1038         RegisterHeaderHandler(HKEY("COOKIE"), Header_HandleCookie);
1039         RegisterHeaderHandler(HKEY("AUTHORIZATION"), Header_HandleAuth);
1040
1041         /* no url pattern at all? Show login. */
1042         WebcitAddUrlHandler(HKEY(""), "", 0, do_welcome, ANONYMOUS|COOKIEUNNEEDED);
1043
1044         WebcitAddUrlHandler(HKEY("do_welcome"), "", 0, do_welcome, ANONYMOUS|COOKIEUNNEEDED);
1045         WebcitAddUrlHandler(HKEY("openid_login"), "", 0, do_openid_login, ANONYMOUS);
1046         WebcitAddUrlHandler(HKEY("finalize_openid_login"), "", 0, finalize_openid_login, ANONYMOUS);
1047         WebcitAddUrlHandler(HKEY("openid_manual_create"), "", 0, openid_manual_create, ANONYMOUS);
1048         WebcitAddUrlHandler(HKEY("validate"), "", 0, validate, 0);
1049         WebcitAddUrlHandler(HKEY("do_welcome"), "", 0, do_welcome, 0);
1050         WebcitAddUrlHandler(HKEY("display_reg"), "", 0, _display_reg, 0);
1051         WebcitAddUrlHandler(HKEY("display_changepw"), "", 0, display_changepw, 0);
1052         WebcitAddUrlHandler(HKEY("changepw"), "", 0, changepw, 0);
1053         WebcitAddUrlHandler(HKEY("termquit"), "", 0, do_logout, 0);
1054         WebcitAddUrlHandler(HKEY("do_logout"), "", 0, do_logout, ANONYMOUS|COOKIEUNNEEDED|FORCE_SESSIONCLOSE);
1055         WebcitAddUrlHandler(HKEY("monitor"), "", 0, monitor, ANONYMOUS|COOKIEUNNEEDED|FORCE_SESSIONCLOSE);
1056         WebcitAddUrlHandler(HKEY("ajax_login_username_password"), "", 0, ajax_login_username_password, AJAX|ANONYMOUS);
1057         WebcitAddUrlHandler(HKEY("ajax_login_newuser"), "", 0, ajax_login_newuser, AJAX|ANONYMOUS);
1058         WebcitAddUrlHandler(HKEY("switch_language"), "", 0, switch_language, ANONYMOUS);
1059         RegisterConditional(HKEY("COND:AIDE"), 2, ConditionalAide, CTX_NONE);
1060         RegisterConditional(HKEY("COND:LOGGEDIN"), 2, ConditionalIsLoggedIn, CTX_NONE);
1061         RegisterConditional(HKEY("COND:MAY_CREATE_ROOM"), 2,  ConditionalHaveAccessCreateRoom, CTX_NONE);
1062         return;
1063 }
1064
1065
1066 void
1067 SessionDestroyModule_AUTH
1068 (wcsession *sess)
1069 {
1070         FreeStrBuf(&sess->wc_username);
1071         FreeStrBuf(&sess->wc_fullname);
1072         FreeStrBuf(&sess->wc_password);
1073         FreeStrBuf(&sess->httpauth_pass);
1074         FreeStrBuf(&sess->cs_inet_email);
1075 }