src/tcpdchk.c

   1 /* This file is part of the YAZ toolkit.
   2  * Copyright (C) 1995-2011 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 #ifdef LOG_DEBUG
  55 #undef LOG_DEBUG
  56 #endif
  57 #ifdef LOG_WARN
  58 #undef LOG_WARN
  59 #endif
  60
  61 #endif
  62
  63 int check_ip_tcpd(void *cd, const char *addr, int len, int type)
  64 {
  65     const char *daemon_name = (const char *) cd;
  66
  67     if (type == AF_INET)
  68     {
  69         if (daemon_name && *daemon_name)
  70         {
  71 #if HAVE_TCPD_H
  72             struct request_info request_info;
  73             int i;
  74 #endif
  75             char *host_name = 0, *host_addr = 0;
  76             struct hostent *host;
  77
  78             struct sockaddr_in *addr_in = (struct sockaddr_in *) addr;
  79
  80             if ((host = gethostbyaddr((char*)&addr_in->sin_addr,
  81                                       sizeof(addr_in->sin_addr),
  82                                       AF_INET)))
  83                 host_name = (char*) host->h_name;
  84             host_addr = inet_ntoa(addr_in->sin_addr);
  85 #if HAVE_TCPD_H
  86             if (host_addr)
  87                 request_init(&request_info, RQ_DAEMON, daemon_name,
  88                              RQ_CLIENT_NAME, host_name,
  89                              RQ_CLIENT_SIN, addr_in,
  90                              RQ_CLIENT_ADDR, host_addr, 0);
  91             else
  92                 request_init(&request_info, RQ_DAEMON, daemon_name,
  93                              RQ_CLIENT_SIN, addr_in,
  94                              RQ_CLIENT_ADDR, host_addr, 0);
  95             i = hosts_access(&request_info);
  96             if (!i)
  97             {
  98                 yaz_log (YLOG_DEBUG, "access denied from %s",
  99                          host_name ? host_name : host_addr);
 100                 return 1;
 101             }
 102             yaz_log (YLOG_DEBUG, "access granted from %s",
 103                      host_name ? host_name : host_addr);
 104 #endif
 105         }
 106     }
 107     return 0;
 108 }
 109
 110 /*
 111  * Local variables:
 112  * c-basic-offset: 4
 113  * c-file-style: "Stroustrup"
 114  * indent-tabs-mode: nil
 115  * End:
 116  * vim: shiftwidth=4 tabstop=8 expandtab
 117  */
 118