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/*
* Copyright (C) 2005-2008 by CERN/IT/GD/CT
* All rights reserved
*/
#ifndef lint
static char sccsid[] = "@(#)$RCSfile: isTrustedHost.c,v $ $Revision: 1.8 $ $Date: 2008/01/31 11:41:39 $ CERN IT-GD/CT Jean-Philippe Baud";
#endif /* not lint */
#include <stdio.h>
#include <string.h>
#if defined(_WIN32)
#include <winsock2.h>
#else
#include <netdb.h>
#include <netinet/in.h>
#endif
#include "Castor_limits.h"
#include "Cnetdb.h"
#ifndef _WIN32
#if defined(_REENTRANT) || defined(_THREAD_SAFE)
#define strtok(X,Y) strtok_r(X,Y,&last)
#endif /* _REENTRANT || _THREAD_SAFE */
#endif /* _WIN32 */
extern int DLL_DECL CDoubleDnsLookup _PROTO((int, char *));
/* Check in configuration file if a given hostname
is trusted for a given operation
Example of configuration file entries:
RFIOD RTRUST host1 host2
DPNS TRUST host3 host4
*/
int DLL_DECL
isTrustedHost2 (char *hostname, char *localhost, char *localdomain, char *svc_name, char *perm)
{
char fqn[CA_MAXHOSTNAMELEN+1];
char *getconfent();
int l;
#ifndef _WIN32
#if defined(_REENTRANT) || defined(_THREAD_SAFE)
char *last = NULL;
#endif
#endif
char *p;
char *q;
if (! hostname)
return (0);
if (localhost && strcmp (hostname, localhost) == 0)
return (1);
if ((p = getconfent (svc_name, perm, 1)) == NULL)
return (0);
l = strlen (localdomain);
for (q = strtok (p, "\t "); q; q = strtok (NULL, "\t ")) {
if (strcmp (hostname, q) == 0)
return (1);
if (strchr (q, '.'))
continue;
if (strlen (q) + l + 1 > CA_MAXHOSTNAMELEN)
continue;
sprintf (fqn, "%s.%s", q, localdomain);
if (strcmp (hostname, fqn) == 0)
return (1);
}
return (0);
}
/* Check in configuration file if a client connected on the socket s
is trusted for a given operation
Example of configuration file entries:
RFIOD RTRUST host1 host2
DPNS TRUST host3 host4
*/
int DLL_DECL
isTrustedHost (int s, char *localhost, char *localdomain, char *svc_name, char *perm)
{
char hostname[CA_MAXHOSTNAMELEN+1];
if (CDoubleDnsLookup (s, hostname))
return (0);
return (isTrustedHost2 (hostname, localhost, localdomain, svc_name, perm));
}
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