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allow host resolution via DNS SRV based on the DN portion of the URI if no host is provided (ITS#4996)

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This commit is contained in:
Pierangelo Masarati 2007-06-09 18:25:51 +00:00
parent d4d90f0ef3
commit 0f8b273ca6
1 changed files with 97 additions and 0 deletions
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97
clients/tools/common.c
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@ -957,6 +957,103 @@ tool_conn_setup( int dont, void (*private_setup)( LDAP * ) )
url.lud_scope = LDAP_SCOPE_DEFAULT;
ldapuri = ldap_url_desc2str( &url );
} else if ( ldapuri != NULL ) {
LDAPURLDesc *lud;
rc = ldap_url_parse( ldapuri, &lud );
if ( rc != LDAP_URL_SUCCESS ) {
fprintf( stderr,
"Could not parse LDAP URI=%s (%d)\n",
ldapuri, rc );
exit( EXIT_FAILURE );
}
if ( lud->lud_dn != NULL && lud->lud_dn[ 0 ] != '\0' &&
( lud->lud_host == NULL || lud->lud_host[0] == '\0' ) )
{
/* if no host but a DN is provided,
* use DNS SRV to gather the host list
* and turn it into a list of URIs
* using the scheme provided */
char *domain = NULL,
*hostlist = NULL,
**hosts = NULL,
**urls = NULL;
int i,
len_proto = strlen( lud->lud_scheme );
ber_memfree( ldapuri );
ldapuri = NULL;
if ( ldap_dn2domain( lud->lud_dn, &domain )
|| domain == NULL )
{
fprintf( stderr,
"DNS SRV: Could not turn "
"DN=\"%s\" into a domain\n",
lud->lud_dn );
goto dnssrv_free;
}
rc = ldap_domain2hostlist( domain, &hostlist );
if ( rc ) {
fprintf( stderr,
"DNS SRV: Could not turn "
"domain=%s into a hostlist\n",
domain );
goto dnssrv_free;
}
hosts = ldap_str2charray( hostlist, " " );
if ( hosts == NULL ) {
fprintf( stderr,
"DNS SRV: Could not parse "
"hostlist=\"%s\"\n",
hostlist );
goto dnssrv_free;
}
for ( i = 0; hosts[ i ] != NULL; i++ )
/* count'em */ ;
urls = (char **)calloc( sizeof( char * ), i + 1 );
if ( urls == NULL ) {
fprintf( stderr,
"DNS SRV: out of memory?\n" );
goto dnssrv_free;
}
for ( i = 0; hosts[ i ] != NULL; i++ ) {
size_t len = len_proto
+ STRLENOF( "://" )
+ strlen( hosts[ i ] )
+ 1;
urls[ i ] = (char *)malloc( sizeof( char ) * len );
if ( urls[ i ] == NULL ) {
fprintf( stderr,
"DNS SRV: out of memory?\n" );
goto dnssrv_free;
}
snprintf( urls[ i ], len, "%s://%s",
lud->lud_scheme, hosts[ i ] );
}
ldapuri = ldap_charray2str( urls, " " );
dnssrv_free:;
ber_memvfree( (void **)hosts );
ber_memvfree( (void **)urls );
ber_memfree( hostlist );
ber_memfree( domain );
}
ldap_free_urldesc( lud );
if ( ldapuri == NULL ) {
exit( EXIT_FAILURE );
}
}
if ( verbose ) {