gpg: Add property "fpr" for use by --export-filter.

* g10/export.c (push_export_filters): New.
(pop_export_filters): New.
(export_pubkey_buffer): Add args prefix and prefixlen.  Adjust
callers.
* g10/import.c (impex_filter_getval): Add property "fpr".
* g10/main.h (struct impex_filter_parm_s): Add field hexfpr.
--

The push and pop feature will help us to use the export filter
internally in gpg.  Same for the export_pubkey_buffer change.

GnuPG-bug-id: 4856
Signed-off-by: Werner Koch <[email protected]>

1 files changed, 4 insertions, 0 deletions

diff --git a/g10/main.h b/g10/main.h
index 704eb339f..3b44b16c6 100644
--- a/g10/main.h
+++ b/g10/main.h
@@ -390,6 +390,7 @@ struct impex_filter_parm_s
 {
   ctrl_t ctrl;
   kbnode_t node;
+  char hexfpr[2*MAX_FINGERPRINT_LEN + 1];
 };
 
 const char *impex_filter_getval (void *cookie, const char *propname);
@@ -413,6 +414,8 @@ void export_print_stats (export_stats_t stats);
 
 int parse_export_options(char *str,unsigned int *options,int noisy);
 gpg_error_t parse_and_set_export_filter (const char *string);
+void push_export_filters (void);
+void pop_export_filters (void);
 
 int exact_subkey_match_p (KEYDB_SEARCH_DESC *desc, kbnode_t node);
 
@@ -425,6 +428,7 @@ int export_secsubkeys (ctrl_t ctrl, strlist_t users, unsigned int options,
 
 gpg_error_t export_pubkey_buffer (ctrl_t ctrl, const char *keyspec,
                                   unsigned int options,
+                                  const void *prefix, size_t prefixlen,
                                   export_stats_t stats,
                                   kbnode_t *r_keyblock,
                                   void **r_data, size_t *r_datalen);