core: New function gpgme_op_tofu_policy

* src/gpgme.h.in (gpgme_op_tofu_policy_start): New function.
(gpgme_op_tofu_policy): New function.
* src/libgpgme.vers, src/gpgme.def: Add new functions.
* src/tofupolicy.c: New.
* src/Makefile.am (main_sources): Add that file.
* src/context.h (ctx_op_data_id_t): Add OPDATA_TOFU_POLICY.
* src/engine.c (_gpgme_engine_op_tofu_policy): New.
* src/engine-backend.h (engine_ops): Add funcptr 'tofu_policy'.
Adjust all engine initializations.
* src/engine-gpg.c (gpg_tofu_policy): New.
(_gpgme_engine_ops_gpg): Register this function.

* tests/run-tofu.c: New.
* tests/Makefile.am (noinst_PROGRAMS): Add it.

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

1 files changed, 178 insertions, 0 deletions

diff --git a/tests/run-tofu.c b/tests/run-tofu.c
new file mode 100644
index 00000000..ff557893
--- /dev/null
+++ b/tests/run-tofu.c
@@ -0,0 +1,178 @@
+/* run-tofu.c  - Test tool for Tofu functions
+ * Copyright (C) 2016 g10 Code GmbH
+ *
+ * This file is part of GPGME.
+ *
+ * GPGME is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * GPGME is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+/* We need to include config.h so that we know whether we are building
+   with large file system (LFS) support. */
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <assert.h>
+
+#include <gpgme.h>
+
+#define PGM "run-tofu"
+
+#include "run-support.h"
+
+
+static int verbose;
+
+
+static gpg_error_t
+status_cb (void *opaque, const char *keyword, const char *value)
+{
+  (void)opaque;
+  fprintf (stderr, "status_cb: %s %s\n", nonnull(keyword), nonnull(value));
+  return 0;
+}
+
+
+
+static gpgme_tofu_policy_t
+parse_policy_string (const char *string)
+{
+  gpgme_tofu_policy_t policy;
+
+  if (!strcmp (string, "auto"))
+    policy = GPGME_TOFU_POLICY_AUTO;
+  else if (!strcmp (string, "good"))
+    policy = GPGME_TOFU_POLICY_GOOD;
+  else if (!strcmp (string, "bad"))
+    policy = GPGME_TOFU_POLICY_BAD;
+  else if (!strcmp (string, "ask"))
+    policy = GPGME_TOFU_POLICY_ASK;
+  else if (!strcmp (string, "unknown"))
+    policy = GPGME_TOFU_POLICY_UNKNOWN;
+  else
+    {
+      fprintf (stderr, PGM ": invalid policy value '%s'\n", string);
+      exit (1);
+    }
+
+  return policy;
+}
+
+
+
+static int
+show_usage (int ex)
+{
+  fputs ("usage: " PGM " [options] FPR\n\n"
+         "Options:\n"
+         "  --policy NAME    Set tofu policy for key to NAME\n"
+         "  --verbose        run in verbose mode\n"
+         "  --status         print status lines from the backend\n"
+         , stderr);
+  exit (ex);
+}
+
+
+int
+main (int argc, char **argv)
+{
+  int last_argc = -1;
+  gpgme_error_t err;
+  gpgme_ctx_t ctx;
+  gpgme_protocol_t protocol = GPGME_PROTOCOL_OpenPGP;
+  int print_status = 0;
+  gpgme_key_t thekey;
+  const char *fpr;
+  const char *policystr = NULL;
+  gpgme_tofu_policy_t policy;
+
+  if (argc)
+    { argc--; argv++; }
+
+  while (argc && last_argc != argc )
+    {
+      last_argc = argc;
+      if (!strcmp (*argv, "--"))
+        {
+          argc--; argv++;
+          break;
+        }
+      else if (!strcmp (*argv, "--help"))
+        show_usage (0);
+      else if (!strcmp (*argv, "--verbose"))
+        {
+          verbose = 1;
+          argc--; argv++;
+        }
+      else if (!strcmp (*argv, "--status"))
+        {
+          print_status = 1;
+          argc--; argv++;
+        }
+      else if (!strcmp (*argv, "--policy"))
+        {
+          argc--; argv++;
+          if (!argc)
+            show_usage (1);
+          policystr = *argv;
+          argc--; argv++;
+        }
+      else if (!strncmp (*argv, "--", 2))
+        show_usage (1);
+    }
+
+  if (argc != 1)
+    show_usage (1);
+  fpr = argv[0];
+
+  init_gpgme (protocol);
+
+  err = gpgme_new (&ctx);
+  fail_if_err (err);
+  gpgme_set_protocol (ctx, protocol);
+  gpgme_set_armor (ctx, 1);
+  if (print_status)
+    {
+      gpgme_set_status_cb (ctx, status_cb, NULL);
+      gpgme_set_ctx_flag (ctx, "full-status", "1");
+    }
+
+  err = gpgme_get_key (ctx, fpr, &thekey, 0);
+  if (err)
+    {
+      fprintf (stderr, PGM ": error getting key '%s': %s\n",
+               fpr, gpg_strerror (err));
+      exit (1);
+    }
+
+  if (policystr)
+    {
+      policy = parse_policy_string (policystr);
+
+      err = gpgme_op_tofu_policy (ctx, thekey, policy);
+      if (err)
+        {
+          fprintf (stderr, PGM ": gpgme_op_tofu_polciy failed: %s\n",
+                   gpg_strerror (err));
+          exit (1);
+        }
+    }
+
+  gpgme_key_unref (thekey);
+  gpgme_release (ctx);
+  return 0;
+}