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