core: New context flag "auto-key-retrieve"

* src/gpgme.c (gpgme_set_ctx_flag, gpgme_get_ctx_flag): New flag
"auto-key-retrieve".
* src/context.h (gpgme_context): New field auto_key_retrieve.
* src/engine-backend.h (struct engine_ops): Add arg auto_key_retrieve
to field 'decrypt'.
* src/engine-gpg.c (gpg_decrypt): Add arg auto_key_retrieve and pass
option --auto-key-retrieve to gpg.  Adjust all callers.
(gpg_verify): Ditto.
* src/engine-gpgsm.c (gpgsm_decrypt): Add dummy arg auto_key_retrieve.
* src/engine-uiserver.c (uiserver_decrypt): Ditto.
* tests/run-verify.c (main): Add option --auto-key-retrieve.
--

This makes the --auto-key-retrieve option available in the GPGME API.

Test plan:
Run

  GPGME_DEBUG=9:out tests/run-verify SIGNEDFILE

with and without its new option --auto-key-retrieve and check in the
trace stored in "out" whether --auto-key-retrieve was passed to gpg.

Signed-off-by: Werner Koch <[email protected]>

1 files changed, 21 insertions, 0 deletions

diff --git a/tests/run-verify.c b/tests/run-verify.c
index 3abc5728..b22e6446 100644
--- a/tests/run-verify.c
+++ b/tests/run-verify.c
@@ -222,6 +222,7 @@ show_usage (int ex)
          "  --openpgp        use the OpenPGP protocol (default)\n"
          "  --cms            use the CMS protocol\n"
          "  --sender MBOX    use MBOX as sender address\n"
+         "  --auto-key-retrieve\n"
          , stderr);
   exit (ex);
 }
@@ -231,6 +232,7 @@ int
 main (int argc, char **argv)
 {
   int last_argc = -1;
+  const char *s;
   gpgme_error_t err;
   gpgme_ctx_t ctx;
   gpgme_protocol_t protocol = GPGME_PROTOCOL_OpenPGP;
@@ -241,6 +243,7 @@ main (int argc, char **argv)
   gpgme_verify_result_t result;
   int print_status = 0;
   const char *sender = NULL;
+  int auto_key_retrieve = 0;
 
   if (argc)
     { argc--; argv++; }
@@ -283,6 +286,12 @@ main (int argc, char **argv)
           sender = *argv;
           argc--; argv++;
         }
+      else if (!strcmp (*argv, "--auto-key-retrieve"))
+        {
+          auto_key_retrieve = 1;
+          argc--; argv++;
+        }
+
       else if (!strncmp (*argv, "--", 2))
         show_usage (1);
 
@@ -323,6 +332,18 @@ main (int argc, char **argv)
     }
   /* gpgme_set_ctx_flag (ctx, "raw-description", "1"); */
 
+  if (auto_key_retrieve)
+    {
+      gpgme_set_ctx_flag (ctx, "auto-key-retrieve", "1");
+      s = gpgme_get_ctx_flag (ctx, "auto-key-retrieve");
+      if (!s || strcmp (s, "1"))
+        {
+          fprintf (stderr, PGM ": gpgme_get_ctx_flag failed for '%s'\n",
+                   "auto-key-retrieve");
+          exit (1);
+        }
+    }
+
   if (sender)
     {
       err = gpgme_set_sender (ctx, sender);