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ITS#9287 use getaddrinfo for ldap_pvt_get_fqdn

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If getaddrinfo is available, should use it here
This commit is contained in:
Howard Chu 2020-07-16 21:08:36 +01:00
parent 75ce891a82
commit 24b45f57f2
1 changed files with 25 additions and 3 deletions
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28
libraries/libldap/util-int.c
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@ -830,10 +830,15 @@ static char *safe_realloc( char **buf, int len )
char * ldap_pvt_get_fqdn( char *name )
{
char *fqdn, *ha_buf;
char hostbuf[MAXHOSTNAMELEN+1];
#ifdef HAVE_GETADDRINFO
struct addrinfo hints, *res;
#else
char *ha_buf;
struct hostent *hp, he_buf;
int rc, local_h_errno;
int local_h_errno;
#endif
int rc;
char *fqdn, hostbuf[MAXHOSTNAMELEN+1];
if( name == NULL ) {
if( gethostname( hostbuf, MAXHOSTNAMELEN ) == 0 ) {
@ -844,6 +849,22 @@ char * ldap_pvt_get_fqdn( char *name )
}
}
#ifdef HAVE_GETADDRINFO
memset( &hints, 0, sizeof( hints ));
hints.ai_family = AF_UNSPEC;
hints.ai_flags = AI_CANONNAME;
LDAP_MUTEX_LOCK( &ldap_int_resolv_mutex );
rc = getaddrinfo( name, NULL, &hints, &res );
LDAP_MUTEX_UNLOCK( &ldap_int_resolv_mutex );
if ( rc == 0 && res->ai_canonname ) {
fqdn = LDAP_STRDUP( res->ai_canonname );
} else {
fqdn = LDAP_STRDUP( name );
}
if ( rc == 0 )
freeaddrinfo( res );
#else
rc = ldap_pvt_gethostbyname_a( name,
&he_buf, &ha_buf, &hp, &local_h_errno );
@ -854,6 +875,7 @@ char * ldap_pvt_get_fqdn( char *name )
}
LDAP_FREE( ha_buf );
#endif
return fqdn;
}