ITS#10498 libldap: fix for OpenSSL 4 compatibility

diff --git a/libraries/libldap/tls_o.c b/libraries/libldap/tls_o.c
index 02dc4cd92fc5e7e20f108cfada242105602ff70d..428bc32c85e25eddd4ea5c8de376e4bdce31b683 100644 (file)
--- a/libraries/libldap/tls_o.c
+++ b/libraries/libldap/tls_o.c
@@ -1147,6 +1147,8 @@ tlso_session_chkhost( LDAP *ld, tls_session *sess, const char *name_in )
                X509_NAME_ENTRY *ne;
                ASN1_OBJECT *obj;
                ASN1_STRING *cn = NULL;
+               char *cnstr;
+               int cnlen;
                int navas;
 
                /* find the last CN */
@@ -1174,22 +1176,25 @@ no_cn:
                        }
                        ld->ld_error = LDAP_STRDUP(
                                _("TLS: unable to get CN from peer certificate"));
+               } else {
+                       cnlen = ASN1_STRING_length( cn );
+                       cnstr = (char *)ASN1_STRING_get0_data( cn );
+                       if ( cnlen == nlen &&
+                               strncasecmp( name, (char *) cnstr, nlen ) == 0 ) {
+                               ret = LDAP_SUCCESS;
 
-               } else if ( cn->length == nlen &&
-                       strncasecmp( name, (char *) cn->data, nlen ) == 0 ) {
-                       ret = LDAP_SUCCESS;
-
-               } else if (( cn->data[0] == '*' ) && ( cn->data[1] == '.' )) {
-                       char *domain = strchr(name, '.');
-                       if( domain ) {
-                               int dlen;
+                       } else if (( cnstr[0] == '*' ) && ( cnstr[1] == '.' )) {
+                               char *domain = strchr(name, '.');
+                               if( domain ) {
+                                       int dlen;
 
-                               dlen = nlen - (domain-name);
+                                       dlen = nlen - (domain-name);
 
-                               /* Is this a wildcard match? */
-                               if ((dlen == cn->length-1) &&
-                                       !strncasecmp(domain, (char *) &cn->data[1], dlen)) {
-                                       ret = LDAP_SUCCESS;
+                                       /* Is this a wildcard match? */
+                                       if ((dlen == cnlen-1) &&
+                                               !strncasecmp(domain, cnstr+1, dlen)) {
+                                               ret = LDAP_SUCCESS;
+                                       }
                                }
                        }
                }
@@ -1197,7 +1202,7 @@ no_cn:
                if( ret == LDAP_LOCAL_ERROR ) {
                        Debug3( LDAP_DEBUG_ANY, "TLS: hostname (%s) does not match "
                                "common name in certificate (%.*s).\n", 
-                               name, cn->length, cn->data );
+                               name, cnlen, cnstr );
                        ret = LDAP_CONNECT_ERROR;
                        if ( ld->ld_error ) {
                                LDAP_FREE( ld->ld_error );