dirmngr: Return modifyTimestamp and add server option --newer.

* dirmngr/server.c (cmd_ks_get): Add option --newer.
(cmd_ad_query): Ditto.
* dirmngr/ldap-misc.c (isotime2rfc4517): New.
(rfc4517toisotime): New.
* dirmngr/ks-action.c (ks_action_get): Add arg newer and pass on.
(ks_action_query): Ditto.
* dirmngr/ks-engine-ldap.c (extract_keys): Print new "chg" record.
(ks_ldap_get): Add arg newer.  Modify filter with newer arg.
(ks_ldap_search): Print the modifyTimestamp.
(ks_ldap_query): Add arg newer.  Modify filter with newer arg.
--

Note that the modifyTimestamp is also available on Windows, where its
value is more commonly known as whenChanged.  Both are constructed
attributes.

Note that the --newer option is a bit of a misnomer because LDAP has
only a greater-or-equal and no greater-than operator.

1 files changed, 3 insertions, 2 deletions

diff --git a/dirmngr/ks-engine.h b/dirmngr/ks-engine.h
index 5fbe300c0..03588a4d3 100644
--- a/dirmngr/ks-engine.h
+++ b/dirmngr/ks-engine.h
@@ -76,13 +76,14 @@ gpg_error_t ks_ldap_search (ctrl_t ctrl, parsed_uri_t uri, const char *pattern,
 			    estream_t *r_fp);
 gpg_error_t ks_ldap_get (ctrl_t ctrl, parsed_uri_t uri,
 			 const char *keyspec, unsigned int ks_get_flags,
-                         estream_t *r_fp);
+                         gnupg_isotime_t newer, estream_t *r_fp);
 gpg_error_t ks_ldap_put (ctrl_t ctrl, parsed_uri_t uri,
 			 void *data, size_t datalen,
 			 void *info, size_t infolen);
 gpg_error_t ks_ldap_query (ctrl_t ctrl, parsed_uri_t uri,
                            unsigned int ks_get_flags,
-                           const char *filter, char **attrs, estream_t *r_fp);
+                           const char *filter, char **attrs,
+                           gnupg_isotime_t newer, estream_t *r_fp);
 
 
 #endif /*DIRMNGR_KS_ENGINE_H*/