+#ifdef HAVE_TLS
+#include <openssl/x509.h>
+#include <openssl/err.h>
+
+/* Convert a structured DN from an X.509 certificate into an LDAPV3 DN.
+ * x509_name must be an (X509_NAME *). If func is non-NULL, the
+ * constructed DN will use numeric OIDs to identify attributeTypes,
+ * and the func() will be invoked to rewrite the DN with the given
+ * flags.
+ *
+ * Otherwise the DN will use shortNames as defined in the OpenSSL
+ * library.
+ *
+ * It's preferable to let slapd do the OID to attributeType mapping,
+ * because the OpenSSL tables are known to have many typos in versions
+ * up to (at least) 0.9.6c. However, the LDAP client has no schema tables,
+ * so we're forced to use OpenSSL's mapping there.
+ * -- Howard Chu 2002-04-18
+ */
+
+int
+ldap_X509dn2bv( void *x509_name, struct berval *bv, LDAPDN_rewrite_func *func,
+ unsigned flags )
+{
+ LDAPDN *newDN;
+ LDAPRDN *newRDN;
+ LDAPAVA *newAVA, *baseAVA;
+ X509_NAME_ENTRY *ne;
+ ASN1_OBJECT *obj;
+ ASN1_STRING *str;
+ char oids[8192], *oidptr = oids, *oidbuf = NULL;
+ void *ptrs[2048];
+ int i, j, k = 0, navas, nrdns, rc = LDAP_SUCCESS;
+ int set = -1;
+ size_t dnsize, oidrem = sizeof(oids), oidsize = 0;
+ int csize;
+
+ struct berval Val;
+
+ assert( bv );
+ bv->bv_len = 0;
+ bv->bv_val = NULL;
+
+ /* Get the number of AVAs. This is not necessarily the same as
+ * the number of RDNs.
+ */
+ navas = X509_NAME_entry_count( x509_name );
+
+ /* Get the last element, to see how many RDNs there are */
+ ne = X509_NAME_get_entry( x509_name, navas - 1 );
+ nrdns = ne->set + 1;
+
+ /* Allocate the DN/RDN/AVA stuff as a single block */
+ dnsize = sizeof(LDAPDN) + sizeof(LDAPRDN *) * (nrdns+1);
+ dnsize += sizeof(LDAPRDN) * nrdns + sizeof(LDAPAVA *) * (navas+nrdns);
+ dnsize += sizeof(LDAPAVA) * navas;
+ if (dnsize > sizeof(ptrs)) {
+ newDN = (LDAPDN *)LDAP_MALLOC( dnsize );
+ if ( newDN == NULL )
+ return LDAP_NO_MEMORY;
+ } else {
+ newDN = (LDAPDN *)ptrs;
+ }
+
+ newDN[0] = (LDAPRDN**)(newDN+1);
+ newDN[0][nrdns] = NULL;
+ newRDN = (LDAPRDN*)(newDN[0] + nrdns+1);
+ newAVA = (LDAPAVA*)(newRDN + navas + nrdns*2);
+ baseAVA = newAVA;
+
+ /* Retrieve RDNs in reverse order; LDAP is backwards from X.500. */
+ for ( i = nrdns - 1, j = 0; i >= 0; i-- ) {
+ ne = X509_NAME_get_entry( x509_name, i );
+ obj = X509_NAME_ENTRY_get_object( ne );
+ str = X509_NAME_ENTRY_get_data( ne );
+
+ /* If set changed, move to next RDN */
+ if ( set != ne->set ) {
+ /* If this is not the first time, end the
+ * previous RDN and advance.
+ */
+ if ( j > 0 ) {
+ newRDN[0][k] = NULL;
+ newRDN = (LDAPRDN*)(newRDN[0]+k+1);
+ }
+ newDN[0][j++] = newRDN;
+
+ newRDN[0] = (LDAPAVA**)(newRDN+1);
+ k = 0;
+ set = ne->set;
+ }
+ newAVA->la_private = NULL;
+ newAVA->la_flags = LDAP_AVA_STRING;
+
+ if ( !func ) {
+ int n = OBJ_obj2nid( obj );
+
+ if (n == NID_undef)
+ goto get_oid;
+ newAVA->la_attr.bv_val = (char *)OBJ_nid2sn( n );
+ newAVA->la_attr.bv_len = strlen( newAVA->la_attr.bv_val );
+ } else {
+get_oid: newAVA->la_attr.bv_val = oidptr;
+ newAVA->la_attr.bv_len = OBJ_obj2txt( oidptr, oidrem, obj, 1 );
+ oidptr += newAVA->la_attr.bv_len + 1;
+ oidrem -= newAVA->la_attr.bv_len + 1;
+
+ /* Running out of OID buffer space? */
+ if (oidrem < 128) {
+ if ( oidsize == 0 ) {
+ oidsize = sizeof(oids) * 2;
+ oidrem = oidsize;
+ oidbuf = LDAP_MALLOC( oidsize );
+ if ( oidbuf == NULL ) goto nomem;
+ oidptr = oidbuf;
+ } else {
+ char *old = oidbuf;
+ oidbuf = LDAP_REALLOC( oidbuf, oidsize*2 );
+ if ( oidbuf == NULL ) goto nomem;
+ /* Buffer moved! Fix AVA pointers */
+ if ( old != oidbuf ) {
+ LDAPAVA *a;
+ long dif = oidbuf - old;
+
+ for (a=baseAVA; a<=newAVA; a++){
+ if (a->la_attr.bv_val >= old &&
+ a->la_attr.bv_val <= (old + oidsize))
+ a->la_attr.bv_val += dif;
+ }
+ }
+ oidptr = oidbuf + oidsize - oidrem;
+ oidrem += oidsize;
+ oidsize *= 2;
+ }
+ }
+ }
+ Val.bv_val = str->data;
+ Val.bv_len = str->length;
+ switch( str->type ) {
+ case V_ASN1_UNIVERSALSTRING:
+ /* This uses 32-bit ISO 10646-1 */
+ csize = 4; goto to_utf8;
+ case V_ASN1_BMPSTRING:
+ /* This uses 16-bit ISO 10646-1 */
+ csize = 2; goto to_utf8;
+ case V_ASN1_T61STRING:
+ /* This uses 8-bit, assume ISO 8859-1 */
+ csize = 1;
+to_utf8: rc = ldap_ucs_to_utf8s( &Val, csize, &newAVA->la_value );
+ if (rc != LDAP_SUCCESS) goto nomem;
+ newAVA->la_flags = LDAP_AVA_NONPRINTABLE;
+ break;
+ case V_ASN1_UTF8STRING:
+ newAVA->la_flags = LDAP_AVA_NONPRINTABLE;
+ /* This is already in UTF-8 encoding */
+ case V_ASN1_IA5STRING:
+ case V_ASN1_PRINTABLESTRING:
+ /* These are always 7-bit strings */
+ ber_dupbv( &newAVA->la_value, &Val );
+ default:
+ ;
+ }
+ newRDN[0][k] = newAVA;
+ newAVA++;
+ k++;
+ }
+ newRDN[0][k] = NULL;
+
+ if ( func ) {
+ rc = func( newDN, flags );
+ if ( rc != LDAP_SUCCESS )
+ goto nomem;
+ }
+
+ rc = ldap_dn2bv( newDN, bv, LDAP_DN_FORMAT_LDAPV3 );
+
+nomem:
+ for (;baseAVA < newAVA; baseAVA++) {
+ LDAP_FREE( baseAVA->la_value.bv_val );
+ }
+
+ if ( oidsize != 0 )
+ LDAP_FREE( oidbuf );
+ if ( newDN != (LDAPDN*) ptrs )
+ LDAP_FREE( newDN );
+ return rc;
+}
+#endif /* HAVE_TLS */
+
projects / openldap / blobdiff