core: Allow setting import filters when importing keys

* src/context.h (struct gpgme_context): New field import_filter.
* src/engine-backend.h (struct engine_ops): Add arg import_filter to
field 'import'.
* src/engine-gpg.c (gpg_import): Add arg import_filter and pass option
--import-filter with argument value to gpg. Adjust all callers.
* src/engine-gpgsm.c (gpgsm_import): Add dummy arg import_filter.
* src/gpgme.c (gpgme_release): Free 'import_filter'.
(gpgme_set_ctx_flag, gpgme_get_ctx_flag): New flag "import-filter".

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

This makes the --import-filter option available in the GPGME API for
key imports.

GnuPG-bug-id: 5739

1 files changed, 19 insertions, 1 deletions

diff --git a/src/engine-gpg.c b/src/engine-gpg.c
index fe9ff101..fd39ad76 100644
--- a/src/engine-gpg.c
+++ b/src/engine-gpg.c
@@ -2767,7 +2767,7 @@ string_from_data (gpgme_data_t data, int delim,
 
 static gpgme_error_t
 gpg_import (void *engine, gpgme_data_t keydata, gpgme_key_t *keyarray,
-            const char *key_origin)
+            const char *import_filter, const char *key_origin)
 {
   engine_gpg_t gpg = engine;
   gpgme_error_t err;
@@ -2782,6 +2782,12 @@ gpg_import (void *engine, gpgme_data_t keydata, gpgme_key_t *keyarray,
   if (keyarray)
     {
       err = add_arg (gpg, "--recv-keys");
+      if (!err && import_filter && have_gpg_version (gpg, "2.1.14"))
+        {
+          err = add_arg (gpg, "--import-filter");
+          if (!err)
+            err = add_arg (gpg, import_filter);
+        }
       if (!err)
         err = add_arg (gpg, "--");
       for (idx=0; !err && keyarray[idx]; idx++)
@@ -2813,6 +2819,12 @@ gpg_import (void *engine, gpgme_data_t keydata, gpgme_key_t *keyarray,
          should use an option to gpg to modify such commands (ala
          --multifile).  */
       err = add_arg (gpg, "--fetch-keys");
+      if (!err && import_filter && have_gpg_version (gpg, "2.1.14"))
+        {
+          err = add_arg (gpg, "--import-filter");
+          if (!err)
+            err = add_arg (gpg, import_filter);
+        }
       if (!err)
         err = add_arg (gpg, "--");
       helpptr = NULL;
@@ -2831,6 +2843,12 @@ gpg_import (void *engine, gpgme_data_t keydata, gpgme_key_t *keyarray,
   else
     {
       err = add_arg (gpg, "--import");
+      if (!err && import_filter && have_gpg_version (gpg, "2.1.14"))
+        {
+          err = add_arg (gpg, "--import-filter");
+          if (!err)
+            err = add_arg (gpg, import_filter);
+        }
       if (!err && key_origin && have_gpg_version (gpg, "2.1.22"))
         {
           err = add_arg (gpg, "--key-origin");