[ostree] pull: Print GPG signature status as soon as its known

[Matthew Barnes <mbarnes src gnome org>]

commit d7a6f257a0bb214e38a207554da2c7aefe8f905c
Author: Matthew Barnes <mbarnes redhat com>
Date:   Mon Apr 13 20:26:21 2015 -0400

    pull: Print GPG signature status as soon as its known

 src/ostree/ot-builtin-pull.c |   23 ++++++++++++++++++++++-
 src/ostree/ot-main.c         |   24 ++++++++++++++++++++++++
 src/ostree/ot-main.h         |    2 ++
 3 files changed, 48 insertions(+), 1 deletions(-)
---
diff --git a/src/ostree/ot-builtin-pull.c b/src/ostree/ot-builtin-pull.c
index 91db17d..5d9eac4 100644
--- a/src/ostree/ot-builtin-pull.c
+++ b/src/ostree/ot-builtin-pull.c
@@ -40,6 +40,20 @@ static int opt_depth = 0;
    { NULL }
  };
 
+static void
+gpg_verify_result_cb (OstreeRepo *repo,
+                      const char *checksum,
+                      OstreeGpgVerifyResult *result,
+                      GSConsole *console)
+{
+  /* Temporarily place the GSConsole stream (which is just stdout)
+   * back in normal mode before printing GPG verification results. */
+  gs_console_end_status_line (console, NULL, NULL);
+
+  g_print ("\n");
+  ostree_print_gpg_verify_result (result);
+}
+
 gboolean
 ostree_builtin_pull (int argc, char **argv, GCancellable *cancellable, GError **error)
 {
@@ -51,6 +65,7 @@ ostree_builtin_pull (int argc, char **argv, GCancellable *cancellable, GError **
   GSConsole *console = NULL;
   gs_unref_ptrarray GPtrArray *refs_to_fetch = NULL;
   gs_unref_object OstreeAsyncProgress *progress = NULL;
+  gulong signal_handler_id = 0;
 
   context = g_option_context_new ("REMOTE [BRANCH...] - Download data from remote repository");
 
@@ -100,6 +115,9 @@ ostree_builtin_pull (int argc, char **argv, GCancellable *cancellable, GError **
     {
       gs_console_begin_status_line (console, "", NULL, NULL);
       progress = ostree_async_progress_new_and_connect (ostree_repo_pull_default_console_progress_changed, 
console);
+      signal_handler_id = g_signal_connect (repo, "gpg-verify-result",
+                                            G_CALLBACK (gpg_verify_result_cb),
+                                            console);
     }
 
   {
@@ -116,7 +134,7 @@ ostree_builtin_pull (int argc, char **argv, GCancellable *cancellable, GError **
                              g_variant_new_variant (g_variant_new_strv ((const char *const*) 
refs_to_fetch->pdata, -1)));
     g_variant_builder_add (&builder, "{s v}", "depth",
                            g_variant_new_variant (g_variant_new_int32 (opt_depth)));
-    
+   
     if (!ostree_repo_pull_with_options (repo, remote, g_variant_builder_end (&builder),
                                         progress, cancellable, error))
       goto out;
@@ -127,6 +145,9 @@ ostree_builtin_pull (int argc, char **argv, GCancellable *cancellable, GError **
 
   ret = TRUE;
  out:
+  if (signal_handler_id > 0)
+    g_signal_handler_disconnect (repo, signal_handler_id);
+
   if (console)
     gs_console_end_status_line (console, NULL, NULL);
  
diff --git a/src/ostree/ot-main.c b/src/ostree/ot-main.c
index 76dbb5c..457aa3c 100644
--- a/src/ostree/ot-main.c
+++ b/src/ostree/ot-main.c
@@ -385,3 +385,27 @@ ostree_ensure_repo_writable (OstreeRepo *repo,
 
   return ret;
 }
+
+void
+ostree_print_gpg_verify_result (OstreeGpgVerifyResult *result)
+{
+  GString *buffer;
+  guint n_sigs, ii;
+
+  n_sigs = ostree_gpg_verify_result_count_all (result);
+
+  /* XXX If we ever add internationalization, use ngettext() here. */
+  g_print ("Found %u signature%s:\n", n_sigs, n_sigs == 1 ? "" : "s");
+
+  buffer = g_string_sized_new (256);
+
+  for (ii = 0; ii < n_sigs; ii++)
+    {
+      g_string_append_c (buffer, '\n');
+      ostree_gpg_verify_result_describe (result, ii, buffer, "  ",
+                                         OSTREE_GPG_SIGNATURE_FORMAT_DEFAULT);
+    }
+
+  g_print ("%s", buffer->str);
+  g_string_free (buffer, TRUE);
+}
diff --git a/src/ostree/ot-main.h b/src/ostree/ot-main.h
index 2ea5755..60ddb36 100644
--- a/src/ostree/ot-main.h
+++ b/src/ostree/ot-main.h
@@ -59,3 +59,5 @@ gboolean ostree_admin_option_context_parse (GOptionContext *context,
                                             GCancellable *cancellable, GError **error);
 
 gboolean ostree_ensure_repo_writable (OstreeRepo *repo, GError **error);
+
+void ostree_print_gpg_verify_result (OstreeGpgVerifyResult *result);