+++ /dev/null
-/*
- * A server-side module for Citadel designed to filter idiots off the network.
- *
- * Copyright (c) 2002-2017 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.
- */
-
-#include "sysdep.h"
-#include <stdlib.h>
-#include <unistd.h>
-#include <stdio.h>
-#include <fcntl.h>
-#include <signal.h>
-#include <pwd.h>
-#include <errno.h>
-#include <sys/types.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/wait.h>
-#include <string.h>
-#include <limits.h>
-#include <libcitadel.h>
-#include "citadel.h"
-#include "server.h"
-#include "citserver.h"
-#include "support.h"
-#include "config.h"
-#include "control.h"
-#include "user_ops.h"
-#include "database.h"
-#include "msgbase.h"
-
-
-#include "ctdl_module.h"
-
-typedef struct FilterList FilterList;
-
-struct FilterList {
- FilterList *next;
- char fl_user[SIZ];
- char fl_room[SIZ];
- char fl_node[SIZ];
-};
-
-struct FilterList *filterlist = NULL;
-
-/*
- * Keep track of what messages to reject
- */
-FilterList *load_filter_list(void) {
- char *serialized_list = NULL;
- int i;
- char buf[SIZ];
- FilterList *newlist = NULL;
- FilterList *nptr;
-
- serialized_list = CtdlGetSysConfig(FILTERLIST);
- if (serialized_list == NULL) return(NULL); /* if null, no entries */
-
- /* Use the string tokenizer to grab one line at a time */
- for (i=0; i<num_tokens(serialized_list, '\n'); ++i) {
- extract_token(buf, serialized_list, i, '\n', sizeof buf);
- nptr = (FilterList *) malloc(sizeof(FilterList));
- extract_token(nptr->fl_user, buf, 0, '|', sizeof nptr->fl_user);
- striplt(nptr->fl_user);
- extract_token(nptr->fl_room, buf, 1, '|', sizeof nptr->fl_room);
- striplt(nptr->fl_room);
- extract_token(nptr->fl_node, buf, 2, '|', sizeof nptr->fl_node);
- striplt(nptr->fl_node);
-
- /* Cowardly refuse to add an any/any/any entry that would
- * end up filtering every single message.
- */
- if (IsEmptyStr(nptr->fl_user) &&
- IsEmptyStr(nptr->fl_room) &&
- IsEmptyStr(nptr->fl_node)) {
- free(nptr);
- }
- else {
- nptr->next = newlist;
- newlist = nptr;
- }
- }
-
- free(serialized_list);
- return newlist;
-}
-
-
-void free_filter_list(FilterList *fl) {
- if (fl == NULL) return;
- free_filter_list(fl->next);
- free(fl);
-}
-
-void free_netfilter_list(void)
-{
- free_filter_list(filterlist);
- filterlist = NULL;
-}
-
-void load_network_filter_list(void)
-{
- filterlist = load_filter_list();
-}
-
-
-/*
- * This handler detects whether an incoming network message is from some
- * moron user who the site operator has elected to filter out. If a match
- * is found, the message is rejected.
- */
-int filter_the_idiots(struct CtdlMessage *msg, char *target_room) {
- FilterList *fptr;
- int zap_user = 0;
- int zap_room = 0;
- int zap_node = 0;
-
- if ( (msg == NULL) || (filterlist == NULL) ) {
- return(0);
- }
-
- for (fptr = filterlist; fptr != NULL; fptr = fptr->next) {
-
- zap_user = 0;
- zap_room = 0;
- zap_node = 0;
-
- if (!CM_IsEmpty(msg, eAuthor)) {
- if ( (!strcasecmp(msg->cm_fields[eAuthor], fptr->fl_user))
- || (fptr->fl_user[0] == 0) ) {
- zap_user = 1;
- }
- }
-
- if (!CM_IsEmpty(msg, eRemoteRoom)) {
- if ( (!strcasecmp(msg->cm_fields[eRemoteRoom], fptr->fl_room))
- || (fptr->fl_room[0] == 0) ) {
- zap_room = 1;
- }
- }
-
- if (!CM_IsEmpty(msg, eOriginalRoom)) {
- if ( (!strcasecmp(msg->cm_fields[eOriginalRoom], fptr->fl_room))
- || (fptr->fl_room[0] == 0) ) {
- zap_room = 1;
- }
- }
-
- if (!CM_IsEmpty(msg, eNodeName)) {
- if ( (!strcasecmp(msg->cm_fields[eNodeName], fptr->fl_node))
- || (fptr->fl_node[0] == 0) ) {
- zap_node = 1;
- }
- }
-
- if (zap_user + zap_room + zap_node == 3) return(1);
-
- }
-
- return(0);
-}
-
-
-CTDL_MODULE_INIT(netfilter)
-{
- if (!threading)
- {
-/*
- currently unsupported.
- CtdlRegisterNetprocHook(filter_the_idiots);
-*/
- }
-
- /* return our module name for the log */
- return "netfilter";
-}