core: Add trust-model flag

* src/context.h (gpgme_context): Extend with trust_model.
* src/engine-gpg.c (engine_gpg): Extend with trust_model.
(gpg_set_engine_flags): Take trust_model from context.
(build_argv): Handle trust_model.
(gpg_release): Free trust_model.
* src/gpgme.c (gpgme_set_ctx_flag): Handle trust-model flag.
(gpgme_release): Release trust-model.
* doc/gpgme.texi: Document new flag for gpgme_set_ctx_flag.
(Context Flags): New subsection for the context flags.
* tests/run-keylist.c (show_usage, main): Add new --trust-model
parameter.

--
This gives a GPGME user fine grained control over the
trust-model.

Changing the trust model for only a single application depends
on:
GnuPG-Bug-Id: T4134
Maniphest Tasks: T4134
Differential Revision: https://dev.gnupg.org/D466

1 files changed, 18 insertions, 0 deletions

diff --git a/tests/run-keylist.c b/tests/run-keylist.c
index 9206b50a..08b671dd 100644
--- a/tests/run-keylist.c
+++ b/tests/run-keylist.c
@@ -60,6 +60,7 @@ show_usage (int ex)
          "  --from-file      list all keys in the given file\n"
          "  --from-wkd       list key from a web key directory\n"
          "  --require-gnupg  required at least the given GnuPG version\n"
+         "  --trust-model    use the specified trust-model\n"
          , stderr);
   exit (ex);
 }
@@ -104,6 +105,7 @@ main (int argc, char **argv)
   int from_file = 0;
   int from_wkd = 0;
   gpgme_data_t data = NULL;
+  char *trust_model = NULL;
 
 
   if (argc)
@@ -208,6 +210,14 @@ main (int argc, char **argv)
           mode |= GPGME_KEYLIST_MODE_LOCATE;
           from_wkd = 1;
         }
+      else if (!strcmp (*argv, "--trust-model"))
+        {
+          argc--; argv++;
+          if (!argc)
+            show_usage (1);
+          trust_model = strdup (*argv);
+          argc--; argv++;
+        }
       else if (!strncmp (*argv, "--", 2))
         show_usage (1);
     }
@@ -227,6 +237,12 @@ main (int argc, char **argv)
 
   gpgme_set_offline (ctx, offline);
 
+  if (trust_model)
+    {
+      err = gpgme_set_ctx_flag (ctx, "trust-model", trust_model);
+      fail_if_err (err);
+    }
+
   if (from_wkd)
     {
       err = gpgme_set_ctx_flag (ctx, "auto-key-locate",
@@ -401,6 +417,8 @@ main (int argc, char **argv)
   for (keyidx=0; keyarray[keyidx]; keyidx++)
     gpgme_key_unref (keyarray[keyidx]);
 
+  free (trust_model);
+
   gpgme_release (ctx);
   return 0;
 }