src/tcpdchk.c

   1 /*
   2  * Copyright (C) 1995-2007, Index Data ApS
   3  * See the file LICENSE for details.
   4  *
   5  * $Id: tcpdchk.c,v 1.9 2007-01-03 08:42:15 adam Exp $
   6  */
   7 /**
   8  * \file tcpdchk.c
   9  * \brief Implements TCP WRAPPER check.
  10  */
  11
  12 #include <stdio.h>
  13 #include <string.h>
  14
  15 #if HAVE_SYS_TYPES_H
  16 #include <sys/types.h>
  17 #endif
  18
  19 #ifdef WIN32
  20 #include <winsock.h>
  21 #else
  22 #include <netinet/in.h>
  23 #include <netdb.h>
  24 #include <arpa/inet.h>
  25 #include <netinet/tcp.h>
  26 #endif
  27
  28 #if HAVE_SYS_SOCKET_H
  29 #include <sys/socket.h>
  30 #endif
  31
  32 #include <yaz/yconfig.h>
  33 #include <yaz/comstack.h>
  34 #include <yaz/statserv.h>
  35 #include <yaz/log.h>
  36
  37
  38 #if HAVE_TCPD_H
  39 #include <syslog.h>
  40 #include <tcpd.h>
  41
  42 int allow_severity = LOG_INFO;  /* not YLOG !! */
  43 int deny_severity = LOG_WARNING;
  44
  45 #ifdef LOG_DEBUG
  46 #undef LOG_DEBUG
  47 #endif
  48 #ifdef LOG_WARN
  49 #undef LOG_WARN
  50 #endif
  51
  52 #endif
  53
  54 int check_ip_tcpd(void *cd, const char *addr, int len, int type)
  55 {
  56     const char *daemon_name = (const char *) cd;
  57
  58     if (type == AF_INET)
  59     {
  60         if (daemon_name && *daemon_name)
  61         {
  62 #if HAVE_TCPD_H
  63             struct request_info request_info;
  64             int i;
  65 #endif
  66             char *host_name = 0, *host_addr = 0;
  67             struct hostent *host;
  68
  69             struct sockaddr_in *addr_in = (struct sockaddr_in *) addr;
  70
  71             if ((host = gethostbyaddr((char*)&addr_in->sin_addr,
  72                                       sizeof(addr_in->sin_addr),
  73                                       AF_INET)))
  74                 host_name = (char*) host->h_name;
  75             host_addr = inet_ntoa(addr_in->sin_addr);
  76 #if HAVE_TCPD_H
  77             if (host_addr)
  78                 request_init(&request_info, RQ_DAEMON, daemon_name,
  79                              RQ_CLIENT_NAME, host_name,
  80                              RQ_CLIENT_SIN, addr_in,
  81                              RQ_CLIENT_ADDR, host_addr, 0);
  82             else
  83                 request_init(&request_info, RQ_DAEMON, daemon_name,
  84                              RQ_CLIENT_SIN, addr_in,
  85                              RQ_CLIENT_ADDR, host_addr, 0);
  86             i = hosts_access(&request_info);
  87             if (!i)
  88             {
  89                 yaz_log (YLOG_DEBUG, "access denied from %s",
  90                          host_name ? host_name : host_addr);
  91                 return 1;
  92             }
  93             yaz_log (YLOG_DEBUG, "access granted from %s",
  94                      host_name ? host_name : host_addr);
  95 #endif
  96         }
  97     }
  98     return 0;
  99 }
 100
 101 /*
 102  * Local variables:
 103  * c-basic-offset: 4
 104  * indent-tabs-mode: nil
 105  * End:
 106  * vim: shiftwidth=4 tabstop=8 expandtab
 107  */
 108