dirmngr: New command AD_QUERY.

* dirmngr/dirmngr.h: Include name-value.h
(struct server_control_s): Add rootdse and rootdse_tried.
* dirmngr/dirmngr.c (dirmngr_deinit_default_ctrl): Release them.
* dirmngr/ks-engine.h (KS_GET_FLAG_ROOTDSE): Add two new flags.
* dirmngr/ks-engine-ldap.c: Include ks-action.h
(SERVERINFO_GENERIC): New.
(struct ks_engine_ldap_local_s): Add scope.
(ks_ldap_new_state): Set a default scope.
(ks_ldap_clear_state): Ditto.
(my_ldap_connect): Add flag generic.
(return_all_attributes): New.
(fetch_rootdse): New.
(basedn_from_rootdse): New.
(ks_ldap_get): Move some code out to ...
(ks_ldap_prepare_my_state): New.
(ks_ldap_query): New.
* dirmngr/ks-action.c (ks_action_parse_uri): Factored out from server.c
(ks_action_query): New.
* dirmngr/server.c (make_keyserver_item): Factored most code out to
ks_action_parse_uri.
(cmd_ad_query): New.

* dirmngr/ks-engine-ldap.c (no_ldap_due_to_tor): New common error
printing.  Now also with status line.
--

This command allows to query the Windows Active directory.

(cherry picked from commit 625aeb65b0)

no_ldap_due_to_tor has been backported from 2.4

dirmngr/ks-action.h

@@ -21,6 +21,7 @@
 #ifndef DIRMNGR_KS_ACTION_H
 #define DIRMNGR_KS_ACTION_H 1
 
+gpg_error_t ks_action_parse_uri (const char *uri, uri_item_t *r_parseduri);
 gpg_error_t ks_action_help (ctrl_t ctrl, const char *url);
 gpg_error_t ks_action_resolve (ctrl_t ctrl, uri_item_t keyservers);
 gpg_error_t ks_action_search (ctrl_t ctrl, uri_item_t keyservers,
@@ -32,6 +33,9 @@ gpg_error_t ks_action_fetch (ctrl_t ctrl, const char *url, estream_t outfp);
 gpg_error_t ks_action_put (ctrl_t ctrl, uri_item_t keyservers,
 			   void *data, size_t datalen,
 			   void *info, size_t infolen);
+gpg_error_t ks_action_query (ctrl_t ctrl, const char *ldapserver,
+                             unsigned int ks_get_flags,
+                             const char *filter, char **attr, estream_t outfp);
 
 
 #endif /*DIRMNGR_KS_ACTION_H*/