+int ldap_dn2domain(
+ LDAP_CONST char *dn_in,
+ char **domainp)
+{
+ int i;
+ char *domain = NULL;
+ char **dn;
+
+ if( dn_in == NULL || domainp == NULL ) {
+ return -1;
+ }
+
+ dn = ldap_explode_dn( dn_in, 0 );
+
+ if( dn == NULL ) {
+ return -2;
+ }
+
+ for( i=0; dn[i] != NULL; i++ ) {
+ char ** rdn = ldap_explode_rdn( dn[i], 0 );
+
+ if( rdn == NULL || *rdn == NULL ) {
+ LDAP_FREE( rdn );
+ LDAP_FREE( domain );
+ LDAP_VFREE( dn );
+ return -3;
+ }
+
+
+ if( rdn[1] == NULL ) {
+ /*
+ * single-valued RDN
+ */
+ char *dc;
+
+#define LDAP_DC "dc="
+#define LDAP_DCOID "0.9.2342.19200300.100.1.25="
+
+ if( strncasecmp( rdn[0],
+ LDAP_DC, sizeof(LDAP_DC)-1 ) == 0 )
+ {
+ dc = &rdn[0][sizeof(LDAP_DC)-1];
+
+ } else if( strncmp( rdn[0],
+ LDAP_DCOID, sizeof(LDAP_DCOID)-1 ) == 0 )
+ {
+ dc = &rdn[0][sizeof(LDAP_DCOID)-1];
+
+ } else {
+ dc = NULL;
+ }
+
+ if( dc != NULL ) {
+ char *ndomain;
+
+ if( *dc == '\0' ) {
+ /* dc value is empty! */
+ LDAP_FREE( rdn );
+ LDAP_FREE( domain );
+ LDAP_VFREE( dn );
+ LDAP_VFREE( rdn );
+ return -4;
+ }
+
+ ndomain = LDAP_REALLOC( domain,
+ ( domain == NULL ? 0 : strlen(domain) )
+ + strlen(dc) + sizeof(".") );
+
+ if( ndomain == NULL ) {
+ LDAP_FREE( rdn );
+ LDAP_FREE( domain );
+ LDAP_VFREE( dn );
+ LDAP_VFREE( rdn );
+ return -5;
+ }
+
+ if( domain == NULL ) {
+ ndomain[0] = '\0';
+ } else {
+ strcat( ndomain, "." );
+ }
+
+ strcat( ndomain, dc );
+
+ domain = ndomain;
+ continue;
+ }
+ }
+
+ /*
+ * multi-valued RDN or fall thru
+ */
+
+ LDAP_VFREE( rdn );
+ LDAP_FREE( domain );
+ domain = NULL;
+ }
+
+ if( domain != NULL && *domain == '\0' ) {
+ LDAP_FREE( domain );
+ domain = NULL;
+ }
+
+ *domainp = domain;
+ return 0;
+}
+
+int ldap_domain2dn(
+ LDAP_CONST char *domain_in,
+ char **dnp)