Completed the merge of a read-only, reader-only NNTP service into Citadel server.
[citadel.git] / citadel / control.c
index 0b882e85529ba1e8782dd83f4894e23e80b9fae9..0aba124044914bd9b1a2619d21933924ef5999f0 100644 (file)
 /*
- * $Id$
- *
  * This module handles states which are global to the entire server.
  *
+ * Copyright (c) 1987-2014 by the citadel.org team
+ *
+ *  This program is open source software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 3.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
  */
 
-#ifdef DLL_EXPORT
-#define IN_LIBCIT
-#endif
-
-#include "sysdep.h"
-#include <stdlib.h>
-#include <unistd.h>
 #include <stdio.h>
-#include <fcntl.h>
-#include <signal.h>
-
-#if TIME_WITH_SYS_TIME
-# include <sys/time.h>
-# include <time.h>
-#else
-# if HAVE_SYS_TIME_H
-#  include <sys/time.h>
-# else
-#  include <time.h>
-# endif
-#endif
+#include <sys/file.h>
+#include <libcitadel.h>
 
-#include <ctype.h>
-#include <string.h>
-#include <errno.h>
-#include <limits.h>
-#include <sys/types.h>
-#include "citadel.h"
-#include "server.h"
-#include "control.h"
-#include "serv_extensions.h"
-#include "sysdep_decls.h"
-#include "support.h"
+#include "ctdl_module.h"
 #include "config.h"
-#include "msgbase.h"
 #include "citserver.h"
-#include "tools.h"
-#include "room_ops.h"
-
-#ifndef HAVE_SNPRINTF
-#include "snprintf.h"
-#endif
+#include "user_ops.h"
 
 struct CitControl CitControl;
 extern struct config config;
 FILE *control_fp = NULL;
+long control_highest_user = 0;
+
+
+/*
+ * lock_control  -  acquire a lock on the control record file.
+ *                  This keeps multiple citservers from running concurrently.
+ */
+void lock_control(void)
+{
+#if defined(LOCK_EX) && defined(LOCK_NB)
+       if (flock(fileno(control_fp), (LOCK_EX | LOCK_NB))) {
+               syslog(LOG_EMERG, "citserver: unable to lock %s.\n", file_citadel_control);
+               syslog(LOG_EMERG, "Is another citserver already running?\n");
+               exit(CTDLEXIT_CONTROL);
+       }
+#endif
+}
+
+/*
+ * callback to get highest room number when rebuilding control file
+ */
+void control_find_highest(struct ctdlroom *qrbuf, void *data)
+{
+       struct ctdlroom room;
+       struct cdbdata *cdbfr;
+       long *msglist;
+       int num_msgs=0;
+       int c;
+       int room_fixed = 0;
+       int message_fixed = 0;
+       
+       if (qrbuf->QRnumber > CitControl.MMnextroom)
+       {
+               CitControl.MMnextroom = qrbuf->QRnumber;
+               room_fixed = 1;
+       }
+               
+       CtdlGetRoom (&room, qrbuf->QRname);
+       
+       /* Load the message list */
+       cdbfr = cdb_fetch(CDB_MSGLISTS, &room.QRnumber, sizeof(long));
+       if (cdbfr != NULL) {
+               msglist = (long *) cdbfr->ptr;
+               num_msgs = cdbfr->len / sizeof(long);
+       } else {
+               return; /* No messages at all?  No further action. */
+       }
+
+       if (num_msgs>0)
+       {
+               for (c=0; c<num_msgs; c++)
+               {
+                       if (msglist[c] > CitControl.MMhighest)
+                       {
+                               CitControl.MMhighest = msglist[c];
+                               message_fixed = 1;
+                       }
+               }
+       }
+       cdb_free(cdbfr);
+       if (room_fixed)
+               syslog(LOG_INFO, "Control record checking....Fixed room counter\n");
+       if (message_fixed)
+               syslog(LOG_INFO, "Control record checking....Fixed message count\n");
+       return;
+}
+
+
+/*
+ * Callback to get highest user number.
+ */
+void control_find_user (struct ctdluser *EachUser, void *out_data)
+{
+       int user_fixed = 0;
+       
+       if (EachUser->usernum > CitControl.MMnextuser)
+       {
+               CitControl.MMnextuser = EachUser->usernum;
+               user_fixed = 1;
+       }
+       if(user_fixed)
+               syslog(LOG_INFO, "Control record checking....Fixed user count\n");
+}
+
 
 /*
  * get_control  -  read the control record into memory.
  */
 void get_control(void)
 {
+       static int already_have_control = 0;
+       int rv = 0;
+
+       /*
+        * If we already have the control record in memory, there's no point
+        * in reading it from disk again.
+        */
+       if (already_have_control) return;
 
        /* Zero it out.  If the control record on disk is missing or short,
         * the system functions with all control record fields initialized
@@ -64,29 +130,56 @@ void get_control(void)
         */
        memset(&CitControl, 0, sizeof(struct CitControl));
        if (control_fp == NULL) {
-               control_fp = fopen("citadel.control", "rb+");
+               control_fp = fopen(file_citadel_control, "rb+");
                if (control_fp != NULL) {
-                       fchown(fileno(control_fp), config.c_ctdluid, -1);
+                       lock_control();
+                       rv = fchown(fileno(control_fp), config.c_ctdluid, -1);
+                       if (rv == -1)
+                               syslog(LOG_EMERG, "Failed to adjust ownership of: %s [%s]\n", 
+                                      file_citadel_control, strerror(errno));
+                       rv = fchmod(fileno(control_fp), S_IRUSR|S_IWUSR);
+                       if (rv == -1)
+                               syslog(LOG_EMERG, "Failed to adjust accessrights of: %s [%s]\n", 
+                                      file_citadel_control, strerror(errno));
                }
        }
        if (control_fp == NULL) {
-               control_fp = fopen("citadel.control", "wb+");
+               control_fp = fopen(file_citadel_control, "wb+");
                if (control_fp != NULL) {
-                       fchown(fileno(control_fp), config.c_ctdluid, -1);
+                       lock_control();
                        memset(&CitControl, 0, sizeof(struct CitControl));
-                       fwrite(&CitControl, sizeof(struct CitControl),
-                              1, control_fp);
+
+                       rv = fchown(fileno(control_fp), config.c_ctdluid, -1);
+                       if (rv == -1)
+                               syslog(LOG_EMERG, "Failed to adjust ownership of: %s [%s]\n", 
+                                      file_citadel_control, strerror(errno));
+
+                       rv = fchmod(fileno(control_fp), S_IRUSR|S_IWUSR);
+                       if (rv == -1)
+                               syslog(LOG_EMERG, "Failed to adjust accessrights of: %s [%s]\n", 
+                                      file_citadel_control, strerror(errno));
+                       rv = fwrite(&CitControl, sizeof(struct CitControl), 1, control_fp);
+                       if (rv == -1)
+                               syslog(LOG_EMERG, "Failed to write: %s [%s]\n", 
+                                      file_citadel_control, strerror(errno));
                        rewind(control_fp);
                }
        }
        if (control_fp == NULL) {
-               lprintf(CTDL_ALERT, "ERROR opening citadel.control: %s\n",
-                       strerror(errno));
+               syslog(LOG_ALERT, "ERROR opening %s: %s\n", file_citadel_control, strerror(errno));
                return;
        }
 
        rewind(control_fp);
-       fread(&CitControl, sizeof(struct CitControl), 1, control_fp);
+       rv = fread(&CitControl, sizeof(struct CitControl), 1, control_fp);
+       if (rv == -1)
+               syslog(LOG_EMERG, "Failed to read Controlfile: %s [%s]\n", 
+                      file_citadel_control, strerror(errno));
+       already_have_control = 1;
+       rv = chown(file_citadel_control, config.c_ctdluid, (-1));
+       if (rv == -1)
+               syslog(LOG_EMERG, "Failed to adjust ownership of: %s [%s]\n", 
+                      file_citadel_control, strerror(errno));  
 }
 
 /*
@@ -94,27 +187,73 @@ void get_control(void)
  */
 void put_control(void)
 {
+       int rv = 0;
 
        if (control_fp != NULL) {
                rewind(control_fp);
-               fwrite(&CitControl, sizeof(struct CitControl), 1,
-                      control_fp);
+               rv = fwrite(&CitControl, sizeof(struct CitControl), 1, control_fp);
+               if (rv == -1)
+                       syslog(LOG_EMERG, "Failed to write: %s [%s]\n", 
+                              file_citadel_control, strerror(errno));
                fflush(control_fp);
        }
 }
 
 
+/*
+ * check_control   -  check the control record has sensible values for message, user and room numbers
+ */
+void check_control(void)
+{
+       syslog(LOG_INFO, "Checking/re-building control record\n");
+       get_control();
+       // Find highest room number and message number.
+       CtdlForEachRoom(control_find_highest, NULL);
+       ForEachUser(control_find_user, NULL);
+       put_control();
+}
+
+
+/*
+ * release_control - close our fd on exit
+ */
+void release_control(void)
+{
+       if (control_fp != NULL) {
+               fclose(control_fp);
+       }
+       control_fp = NULL;
+}
+
 /*
  * get_new_message_number()  -  Obtain a new, unique ID to be used for a message.
  */
 long get_new_message_number(void)
 {
+       long retval = 0L;
        begin_critical_section(S_CONTROL);
        get_control();
-       ++CitControl.MMhighest;
+       retval = ++CitControl.MMhighest;
        put_control();
        end_critical_section(S_CONTROL);
-       return (CitControl.MMhighest);
+       return(retval);
+}
+
+
+/*
+ * CtdlGetCurrentMessageNumber()  -  Obtain the current highest message number in the system
+ * This provides a quick way to initialise a variable that might be used to indicate
+ * messages that should not be processed. EG. a new Sieve script will use this
+ * to record determine that messages older than this should not be processed.
+ */
+long CtdlGetCurrentMessageNumber(void)
+{
+       long retval = 0L;
+       begin_critical_section(S_CONTROL);
+       get_control();
+       retval = CitControl.MMhighest;
+       end_critical_section(S_CONTROL);
+       return(retval);
 }
 
 
@@ -123,12 +262,13 @@ long get_new_message_number(void)
  */
 long get_new_user_number(void)
 {
+       long retval = 0L;
        begin_critical_section(S_CONTROL);
        get_control();
-       ++CitControl.MMnextuser;
+       retval = ++CitControl.MMnextuser;
        put_control();
        end_critical_section(S_CONTROL);
-       return (CitControl.MMnextuser);
+       return(retval);
 }
 
 
@@ -138,18 +278,23 @@ long get_new_user_number(void)
  */
 long get_new_room_number(void)
 {
+       long retval = 0L;
        begin_critical_section(S_CONTROL);
        get_control();
-       ++CitControl.MMnextroom;
+       retval = ++CitControl.MMnextroom;
        put_control();
        end_critical_section(S_CONTROL);
-       return (CitControl.MMnextroom);
+       return(retval);
 }
 
 
 
 /* 
  * Get or set global configuration options
+ *
+ * IF YOU ADD OR CHANGE FIELDS HERE, YOU *MUST* DOCUMENT YOUR CHANGES AT:
+ * http://www.citadel.org/doku.php?id=documentation:applicationprotocol
+ *
  */
 void cmd_conf(char *argbuf)
 {
@@ -216,6 +361,34 @@ void cmd_conf(char *argbuf)
                cprintf("%d\n", config.c_smtps_port);
                cprintf("%d\n", config.c_enable_fulltext);
                cprintf("%d\n", config.c_auto_cull);
+               cprintf("1\n");
+               cprintf("%d\n", config.c_allow_spoofing);
+               cprintf("%d\n", config.c_journal_email);
+               cprintf("%d\n", config.c_journal_pubmsgs);
+               cprintf("%s\n", config.c_journal_dest);
+               cprintf("%s\n", config.c_default_cal_zone);
+               cprintf("%d\n", config.c_pftcpdict_port);
+               cprintf("%d\n", config.c_managesieve_port);
+               cprintf("%d\n", config.c_auth_mode);
+               cprintf("%s\n", config.c_funambol_host);
+               cprintf("%d\n", config.c_funambol_port);
+               cprintf("%s\n", config.c_funambol_source);
+               cprintf("%s\n", config.c_funambol_auth);
+               cprintf("%d\n", config.c_rbl_at_greeting);
+               cprintf("%s\n", config.c_master_user);
+               cprintf("%s\n", config.c_master_pass);
+               cprintf("%s\n", config.c_pager_program);
+               cprintf("%d\n", config.c_imap_keep_from);
+               cprintf("%d\n", config.c_xmpp_c2s_port);
+               cprintf("%d\n", config.c_xmpp_s2s_port);
+               cprintf("%ld\n", config.c_pop3_fetch);
+               cprintf("%ld\n", config.c_pop3_fastest);
+               cprintf("%d\n", config.c_spam_flag_only);
+               cprintf("%d\n", config.c_guest_logins);
+               cprintf("%d\n", config.c_port_number);
+               cprintf("%d\n", config.c_ctdluid);
+               cprintf("%d\n", config.c_nntp_port);
+               cprintf("%d\n", config.c_nntps_port);
                cprintf("000\n");
        }
 
@@ -223,23 +396,23 @@ void cmd_conf(char *argbuf)
                unbuffer_output();
                cprintf("%d Send configuration...\n", SEND_LISTING);
                a = 0;
-               while (client_getln(buf, sizeof buf), strcmp(buf, "000")) {
+               while (client_getln(buf, sizeof buf) >= 0 && strcmp(buf, "000")) {
                        switch (a) {
                        case 0:
-                               safestrncpy(config.c_nodename, buf,
-                                           sizeof config.c_nodename);
+                               configlen.c_nodename = safestrncpy(config.c_nodename, buf,
+                                                                  sizeof config.c_nodename);
                                break;
                        case 1:
-                               safestrncpy(config.c_fqdn, buf,
-                                           sizeof config.c_fqdn);
+                               configlen.c_fqdn = safestrncpy(config.c_fqdn, buf,
+                                                              sizeof config.c_fqdn);
                                break;
                        case 2:
-                               safestrncpy(config.c_humannode, buf,
-                                           sizeof config.c_humannode);
+                               configlen.c_humannode = safestrncpy(config.c_humannode, buf,
+                                                                   sizeof config.c_humannode);
                                break;
                        case 3:
-                               safestrncpy(config.c_phonenum, buf,
-                                           sizeof config.c_phonenum);
+                               configlen.c_phonenum = safestrncpy(config.c_phonenum, buf,
+                                                                  sizeof config.c_phonenum);
                                break;
                        case 4:
                                config.c_creataide = atoi(buf);
@@ -265,12 +438,12 @@ void cmd_conf(char *argbuf)
                                        config.c_twitdetect = 1;
                                break;
                        case 9:
-                               safestrncpy(config.c_twitroom, buf,
-                                           sizeof config.c_twitroom);
+                               configlen.c_twitroom = safestrncpy(config.c_twitroom, buf,
+                                                                  sizeof config.c_twitroom);
                                break;
                        case 10:
-                               safestrncpy(config.c_moreprompt, buf,
-                                           sizeof config.c_moreprompt);
+                               configlen.c_moreprompt = safestrncpy(config.c_moreprompt, buf,
+                                                                    sizeof config.c_moreprompt);
                                break;
                        case 11:
                                config.c_restrict = atoi(buf);
@@ -278,12 +451,13 @@ void cmd_conf(char *argbuf)
                                        config.c_restrict = 1;
                                break;
                        case 12:
-                               safestrncpy(config.c_site_location, buf,
-                                           sizeof config.c_site_location);
+                               configlen.c_site_location = safestrncpy(
+                                       config.c_site_location, buf,
+                                       sizeof config.c_site_location);
                                break;
                        case 13:
-                               safestrncpy(config.c_sysadm, buf,
-                                           sizeof config.c_sysadm);
+                               configlen.c_sysadm = safestrncpy(config.c_sysadm, buf,
+                                                                sizeof config.c_sysadm);
                                break;
                        case 14:
                                config.c_maxsessions = atoi(buf);
@@ -300,8 +474,8 @@ void cmd_conf(char *argbuf)
                                config.c_roompurge = atoi(buf);
                                break;
                        case 18:
-                               safestrncpy(config.c_logpages, buf,
-                                           sizeof config.c_logpages);
+                               configlen.c_logpages = safestrncpy(config.c_logpages, buf,
+                                                                  sizeof config.c_logpages);
                                break;
                        case 19:
                                config.c_createax = atoi(buf);
@@ -350,34 +524,34 @@ void cmd_conf(char *argbuf)
                                break;
                        case 31:
                                if ((config.c_purge_hour >= 0)
-                                  && (config.c_purge_hour <= 23)) {
+                                   && (config.c_purge_hour <= 23)) {
                                        config.c_purge_hour = atoi(buf);
                                }
                                break;
 #ifdef HAVE_LDAP
                        case 32:
-                               safestrncpy(config.c_ldap_host, buf,
-                                           sizeof config.c_ldap_host);
+                               configlen.c_ldap_host = safestrncpy(config.c_ldap_host, buf,
+                                                                   sizeof config.c_ldap_host);
                                break;
                        case 33:
                                config.c_ldap_port = atoi(buf);
                                break;
                        case 34:
-                               safestrncpy(config.c_ldap_base_dn, buf,
-                                           sizeof config.c_ldap_base_dn);
+                               configlen.c_ldap_base_dn = safestrncpy(config.c_ldap_base_dn, buf,
+                                                                      sizeof config.c_ldap_base_dn);
                                break;
                        case 35:
-                               safestrncpy(config.c_ldap_bind_dn, buf,
-                                           sizeof config.c_ldap_bind_dn);
+                               configlen.c_ldap_bind_dn = safestrncpy(config.c_ldap_bind_dn, buf,
+                                                                      sizeof config.c_ldap_bind_dn);
                                break;
                        case 36:
-                               safestrncpy(config.c_ldap_bind_pw, buf,
-                                           sizeof config.c_ldap_bind_pw);
+                               configlen.c_ldap_bind_pw = safestrncpy(config.c_ldap_bind_pw, buf,
+                                                                      sizeof config.c_ldap_bind_pw);
                                break;
 #endif
                        case 37:
-                               safestrncpy(config.c_ip_addr, buf,
-                                               sizeof config.c_ip_addr);
+                               configlen.c_ip_addr = safestrncpy(config.c_ip_addr, buf,
+                                                                 sizeof config.c_ip_addr);
                        case 38:
                                config.c_msa_port = atoi(buf);
                                break;
@@ -396,22 +570,118 @@ void cmd_conf(char *argbuf)
                        case 43:
                                config.c_auto_cull = atoi(buf);
                                break;
+                       case 44:
+                               /* niu */
+                               break;
+                       case 45:
+                               config.c_allow_spoofing = atoi(buf);
+                               break;
+                       case 46:
+                               config.c_journal_email = atoi(buf);
+                               break;
+                       case 47:
+                               config.c_journal_pubmsgs = atoi(buf);
+                               break;
+                       case 48:
+                               configlen.c_journal_dest = safestrncpy(config.c_journal_dest, buf,
+                                                                      sizeof config.c_journal_dest);
+                       case 49:
+                               configlen.c_default_cal_zone = safestrncpy(
+                                       config.c_default_cal_zone, buf,
+                                       sizeof config.c_default_cal_zone);
+                               break;
+                       case 50:
+                               config.c_pftcpdict_port = atoi(buf);
+                               break;
+                       case 51:
+                               config.c_managesieve_port = atoi(buf);
+                               break;
+                       case 52:
+                               config.c_auth_mode = atoi(buf);
+                       case 53:
+                               configlen.c_funambol_host = safestrncpy(
+                                       config.c_funambol_host, buf,
+                                       sizeof config.c_funambol_host);
+                               break;
+                       case 54:
+                               config.c_funambol_port = atoi(buf);
+                               break;
+                       case 55:
+                               configlen.c_funambol_source = safestrncpy(
+                                       config.c_funambol_source, buf, 
+                                       sizeof config.c_funambol_source);
+                               break;
+                       case 56:
+                               configlen.c_funambol_auth = safestrncpy(
+                                       config.c_funambol_auth, buf,
+                                       sizeof config.c_funambol_auth);
+                               break;
+                       case 57:
+                               config.c_rbl_at_greeting = atoi(buf);
+                               break;
+                       case 58:
+                               configlen.c_master_user = safestrncpy(
+                                       config.c_master_user,
+                                       buf, sizeof config.c_master_user);
+                               break;
+                       case 59:
+                               configlen.c_master_pass = safestrncpy(
+                                       config.c_master_pass, buf, sizeof config.c_master_pass);
+                               break;
+                       case 60:
+                               configlen.c_pager_program = safestrncpy(
+                                       config.c_pager_program, buf, sizeof config.c_pager_program);
+                               break;
+                       case 61:
+                               config.c_imap_keep_from = atoi(buf);
+                               break;
+                       case 62:
+                               config.c_xmpp_c2s_port = atoi(buf);
+                               break;
+                       case 63:
+                               config.c_xmpp_s2s_port = atoi(buf);
+                               break;
+                       case 64:
+                               config.c_pop3_fetch = atol(buf);
+                               break;
+                       case 65:
+                               config.c_pop3_fastest = atol(buf);
+                               break;
+                       case 66:
+                               config.c_spam_flag_only = atoi(buf);
+                               break;
+                       case 67:
+                               config.c_guest_logins = atoi(buf);
+                               break;
+                       case 68:
+                               config.c_port_number = atoi(buf);
+                               break;
+                       case 69:
+                               config.c_ctdluid = atoi(buf);
+                               break;
+                       case 70:
+                               config.c_nntp_port = atoi(buf);
+                               break;
+                       case 71:
+                               config.c_nntp_port = atoi(buf);
+                               break;
                        }
                        ++a;
                }
                put_config();
                snprintf(buf, sizeof buf,
-                        "Global system configuration edited by %s\n",
-                        CC->curr_user);
-               aide_message(buf);
+                       "The global system configuration has been edited by %s.\n",
+                        (CC->logged_in ? CC->curr_user : "an administrator")
+               );
+               CtdlAideMessage(buf,"Citadel Configuration Manager Message");
 
-               if (strlen(config.c_logpages) > 0)
-                       create_room(config.c_logpages, 3, "", 0, 1, 1, VIEW_BBS);
+               if (!IsEmptyStr(config.c_logpages))
+                       CtdlCreateRoom(config.c_logpages, 3, "", 0, 1, 1, VIEW_BBS);
 
                /* If full text indexing has been disabled, invalidate the
                 * index so it doesn't try to use it later.
                 */
-               if (!config.c_enable_fulltext == 0) {
+               if (config.c_enable_fulltext == 0) {
                        CitControl.fulltext_wordbreaker = 0;
                        put_control();
                }
@@ -421,9 +691,12 @@ void cmd_conf(char *argbuf)
                extract_token(confname, argbuf, 1, '|', sizeof confname);
                confptr = CtdlGetSysConfig(confname);
                if (confptr != NULL) {
+                       long len; 
+
+                       len = strlen(confptr);
                        cprintf("%d %s\n", LISTING_FOLLOWS, confname);
-                       client_write(confptr, strlen(confptr));
-                       if (confptr[strlen(confptr) - 1] != 10)
+                       client_write(confptr, len);
+                       if ((len > 0) && (confptr[len - 1] != 10))
                                client_write("\n", 1);
                        cprintf("000\n");
                        free(confptr);
@@ -437,8 +710,7 @@ void cmd_conf(char *argbuf)
                extract_token(confname, argbuf, 1, '|', sizeof confname);
                unbuffer_output();
                cprintf("%d %s\n", SEND_LISTING, confname);
-               confptr = CtdlReadMessageBody("000",
-                               config.c_maxmsglen, NULL, 0);
+               confptr = CtdlReadMessageBody(HKEY("000"), config.c_maxmsglen, NULL, 0, 0);
                CtdlPutSysConfig(confname, confptr);
                free(confptr);
        }
@@ -448,3 +720,112 @@ void cmd_conf(char *argbuf)
                        ERROR + ILLEGAL_VALUE);
        }
 }
+
+typedef struct __ConfType {
+       ConstStr Name;
+       long Type;
+}ConfType;
+
+ConfType CfgNames[] = {
+       { {HKEY("localhost") },    0},
+       { {HKEY("directory") },    0},
+       { {HKEY("smarthost") },    2},
+       { {HKEY("fallbackhost") }, 2},
+       { {HKEY("rbl") },          3},
+       { {HKEY("spamassassin") }, 3},
+       { {HKEY("masqdomain") },   1},
+       { {HKEY("clamav") },       3},
+       { {HKEY("notify") },       3},
+       { {NULL, 0}, 0}
+};
+
+HashList *CfgNameHash = NULL;
+void cmd_gvdn(char *argbuf)
+{
+       const ConfType *pCfg;
+       char *confptr;
+       long min = atol(argbuf);
+       const char *Pos = NULL;
+       const char *PPos = NULL;
+       const char *HKey;
+       long HKLen;
+       StrBuf *Line;
+       StrBuf *Config;
+       StrBuf *Cfg;
+       StrBuf *CfgToken;
+       HashList *List;
+       HashPos *It;
+       void *vptr;
+       
+       List = NewHash(1, NULL);
+       Cfg = NewStrBufPlain(config.c_fqdn, -1);
+       Put(List, SKEY(Cfg), Cfg, HFreeStrBuf);
+       Cfg = NULL;
+
+       confptr = CtdlGetSysConfig(INTERNETCFG);
+       Config = NewStrBufPlain(confptr, -1);
+       free(confptr);
+
+       Line = NewStrBufPlain(NULL, StrLength(Config));
+       CfgToken = NewStrBufPlain(NULL, StrLength(Config));
+       while (StrBufSipLine(Line, Config, &Pos))
+       {
+               if (Cfg == NULL)
+                       Cfg = NewStrBufPlain(NULL, StrLength(Line));
+               PPos = NULL;
+               StrBufExtract_NextToken(Cfg, Line, &PPos, '|');
+               StrBufExtract_NextToken(CfgToken, Line, &PPos, '|');
+               if (GetHash(CfgNameHash, SKEY(CfgToken), &vptr) &&
+                   (vptr != NULL))
+               {
+                       pCfg = (ConfType *) vptr;
+                       if (pCfg->Type <= min)
+                       {
+                               Put(List, SKEY(Cfg), Cfg, HFreeStrBuf);
+                               Cfg = NULL;
+                       }
+               }
+       }
+
+       cprintf("%d Valid Domains\n", LISTING_FOLLOWS);
+       It = GetNewHashPos(List, 1);
+       while (GetNextHashPos(List, It, &HKLen, &HKey, &vptr))
+       {
+               cputbuf(vptr);
+               cprintf("\n");
+       }
+       cprintf("000\n");
+
+       DeleteHashPos(&It);
+       DeleteHash(&List);
+       FreeStrBuf(&Cfg);
+       FreeStrBuf(&Line);
+       FreeStrBuf(&CfgToken);
+       FreeStrBuf(&Config);
+}
+
+/*****************************************************************************/
+/*                      MODULE INITIALIZATION STUFF                          */
+/*****************************************************************************/
+
+void control_cleanup(void)
+{
+       DeleteHash(&CfgNameHash);
+}
+CTDL_MODULE_INIT(control)
+{
+       if (!threading) {
+               int i;
+
+               CfgNameHash = NewHash(1, NULL);
+               for (i = 0; CfgNames[i].Name.Key != NULL; i++)
+                       Put(CfgNameHash, CKEY(CfgNames[i].Name), &CfgNames[i], reference_free_handler);
+
+               CtdlRegisterProtoHook(cmd_gvdn, "GVDN", "get valid domain names");
+               CtdlRegisterProtoHook(cmd_conf, "CONF", "get/set system configuration");
+               CtdlRegisterCleanupHook(control_cleanup);
+
+       }
+       /* return our id for the Log */
+       return "control";
+}