src/tcpdchk.c

   1 /* This file is part of the YAZ toolkit.
   2  * Copyright (C) 1995-2008 Index Data
   3  * See the file LICENSE for details.
   4  */
   5 /**
   6  * \file tcpdchk.c
   7  * \brief Implements TCP WRAPPER check.
   8  */
   9
  10 #include <stdio.h>
  11 #include <string.h>
  12
  13 #ifdef WIN32
  14 #include <winsock.h>
  15 #endif
  16
  17 #if HAVE_SYS_TYPES_H
  18 #include <sys/types.h>
  19 #endif
  20
  21 #if HAVE_NETINET_IN_H
  22 #include <netinet/in.h>
  23 #endif
  24
  25 #if HAVE_NETDB_H
  26 #include <netdb.h>
  27 #endif
  28
  29 #include <yaz/comstack.h>
  30 #include <yaz/statserv.h>
  31 #include <yaz/log.h>
  32
  33
  34 #if HAVE_TCPD_H
  35 #include <syslog.h>
  36 #include <tcpd.h>
  37
  38 int allow_severity = LOG_INFO;  /* not YLOG !! */
  39 int deny_severity = LOG_WARNING;
  40
  41 #ifdef LOG_DEBUG
  42 #undef LOG_DEBUG
  43 #endif
  44 #ifdef LOG_WARN
  45 #undef LOG_WARN
  46 #endif
  47
  48 #endif
  49
  50 int check_ip_tcpd(void *cd, const char *addr, int len, int type)
  51 {
  52     const char *daemon_name = (const char *) cd;
  53
  54     if (type == AF_INET)
  55     {
  56         if (daemon_name && *daemon_name)
  57         {
  58 #if HAVE_TCPD_H
  59             struct request_info request_info;
  60             int i;
  61 #endif
  62             char *host_name = 0, *host_addr = 0;
  63             struct hostent *host;
  64
  65             struct sockaddr_in *addr_in = (struct sockaddr_in *) addr;
  66
  67             if ((host = gethostbyaddr((char*)&addr_in->sin_addr,
  68                                       sizeof(addr_in->sin_addr),
  69                                       AF_INET)))
  70                 host_name = (char*) host->h_name;
  71             host_addr = inet_ntoa(addr_in->sin_addr);
  72 #if HAVE_TCPD_H
  73             if (host_addr)
  74                 request_init(&request_info, RQ_DAEMON, daemon_name,
  75                              RQ_CLIENT_NAME, host_name,
  76                              RQ_CLIENT_SIN, addr_in,
  77                              RQ_CLIENT_ADDR, host_addr, 0);
  78             else
  79                 request_init(&request_info, RQ_DAEMON, daemon_name,
  80                              RQ_CLIENT_SIN, addr_in,
  81                              RQ_CLIENT_ADDR, host_addr, 0);
  82             i = hosts_access(&request_info);
  83             if (!i)
  84             {
  85                 yaz_log (YLOG_DEBUG, "access denied from %s",
  86                          host_name ? host_name : host_addr);
  87                 return 1;
  88             }
  89             yaz_log (YLOG_DEBUG, "access granted from %s",
  90                      host_name ? host_name : host_addr);
  91 #endif
  92         }
  93     }
  94     return 0;
  95 }
  96
  97 /*
  98  * Local variables:
  99  * c-basic-offset: 4
 100  * indent-tabs-mode: nil
 101  * End:
 102  * vim: shiftwidth=4 tabstop=8 expandtab
 103  */
 104