src/tcpdchk.c

   1 /* This file is part of the YAZ toolkit.
   2  * Copyright (C) 1995-2013 Index Data
   3  * See the file LICENSE for details.
   4  */
   5 /**
   6  * \file tcpdchk.c
   7  * \brief Implements TCP WRAPPER check.
   8  */
   9
  10 #if HAVE_CONFIG_H
  11 #include <config.h>
  12 #endif
  13
  14 #include <stdio.h>
  15 #include <string.h>
  16
  17 #ifdef WIN32
  18 #include <winsock.h>
  19 #endif
  20
  21 #if HAVE_SYS_TYPES_H
  22 #include <sys/types.h>
  23 #endif
  24
  25 #if HAVE_NETINET_IN_H
  26 #include <netinet/in.h>
  27 #endif
  28
  29 #if HAVE_ARPA_INET_H
  30 #include <arpa/inet.h>
  31 #endif
  32
  33 #if HAVE_SYS_SOCKET_H
  34 /* freebsd wants this for AF_INET */
  35 #include <sys/socket.h>
  36 #endif
  37
  38 #if HAVE_NETDB_H
  39 #include <netdb.h>
  40 #endif
  41
  42 #include <yaz/comstack.h>
  43 #include <yaz/statserv.h>
  44 #include <yaz/log.h>
  45
  46
  47 #if HAVE_TCPD_H
  48 #include <syslog.h>
  49 #include <tcpd.h>
  50
  51 int allow_severity = LOG_INFO;  /* not YLOG !! */
  52 int deny_severity = LOG_WARNING;
  53
  54 #endif
  55
  56 int check_ip_tcpd(void *cd, const char *addr, int len, int type)
  57 {
  58     const char *daemon_name = (const char *) cd;
  59
  60     if (type == AF_INET)
  61     {
  62         if (daemon_name && *daemon_name)
  63         {
  64 #if HAVE_TCPD_H
  65             struct request_info request_info;
  66             int i;
  67             char *host_name = 0, *host_addr = 0;
  68             struct hostent *host;
  69
  70             struct sockaddr_in *addr_in = (struct sockaddr_in *) addr;
  71
  72             if ((host = gethostbyaddr((char*)&addr_in->sin_addr,
  73                                       sizeof(addr_in->sin_addr),
  74                                       AF_INET)))
  75                 host_name = (char*) host->h_name;
  76             host_addr = inet_ntoa(addr_in->sin_addr);
  77             if (host_addr && host_name)
  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, 0);
  85             i = hosts_access(&request_info);
  86             if (!i)
  87             {
  88                 yaz_log(YLOG_DEBUG, "access denied from %s",
  89                         host_name ? host_name : host_addr);
  90                 return 1;
  91             }
  92             yaz_log(YLOG_DEBUG, "access granted from %s",
  93                     host_name ? host_name : host_addr);
  94 #endif
  95         }
  96     }
  97     return 0;
  98 }
  99
 100 /*
 101  * Local variables:
 102  * c-basic-offset: 4
 103  * c-file-style: "Stroustrup"
 104  * indent-tabs-mode: nil
 105  * End:
 106  * vim: shiftwidth=4 tabstop=8 expandtab
 107  */
 108