Allow setting export filters when exporting keys

* src/context.h (struct gpgme_context): New field export_filter.
* src/engine-backend.h (struct engine_ops): Add arg export_filter to
field 'export' and field 'export_ext'.
* src/engine-gpg.c (export_common): Add arg export_filter and pass
option --export-filter with argument value to gpg.
(gpg_export, gpg_export_ext): Add arg export_filter and pass it to
export_common. Adjust all callers of the two functions.
* src/engine-gpgsm.c (gpgsm_export, gpgsm_export_ext): Add dummy arg
export_filter.
* src/gpgme.c (gpgme_release): Free 'export_filter'.
(gpgme_set_ctx_flag, gpgme_get_ctx_flag): New flag "export-filter".

* tests/run-export.c (main): Add option --export-filter.
--

This makes the --export-filter option available in the GPGME API for
key exports.

GnuPG-bug-id: 8033

1 files changed, 15 insertions, 0 deletions

diff --git a/tests/run-export.c b/tests/run-export.c
index 3e328826..c82c1137 100644
--- a/tests/run-export.c
+++ b/tests/run-export.c
@@ -62,6 +62,7 @@ show_usage (int ex)
          "  --secret-subkey  export secret subkeys instead of public keys\n"
          "  --raw            use PKCS#1 as secret key format\n"
          "  --pkcs12         use PKCS#12 as secret key format\n"
+         "  --export-filter  use the specified export filter\n"
          , stderr);
   exit (ex);
 }
@@ -80,6 +81,7 @@ main (int argc, char **argv)
   gpgme_protocol_t protocol = GPGME_PROTOCOL_OpenPGP;
   gpgme_export_mode_t mode = 0;
   int print_status = 0;
+  char *export_filter = NULL;
 
   if (argc)
     { argc--; argv++; }
@@ -144,6 +146,14 @@ main (int argc, char **argv)
           mode |= GPGME_EXPORT_MODE_PKCS12;
           argc--; argv++;
         }
+      else if (!strcmp (*argv, "--export-filter"))
+        {
+          argc--; argv++;
+          if (!argc)
+            show_usage (1);
+          export_filter = strdup (*argv);
+          argc--; argv++;
+        }
       else if (!strncmp (*argv, "--", 2))
         show_usage (1);
 
@@ -162,6 +172,11 @@ main (int argc, char **argv)
       gpgme_set_status_cb (ctx, status_cb, NULL);
       gpgme_set_ctx_flag (ctx, "full-status", "1");
     }
+  if (export_filter)
+    {
+      err = gpgme_set_ctx_flag (ctx, "export-filter", export_filter);
+      fail_if_err (err);
+    }
 
   err = gpgme_data_new (&out);
   fail_if_err (err);