Pass caller and subject pid to authentication agent

The authentication agent can use information this to inform the user
about the UI application that triggered the authentication request (if
any).

Signed-off-by: David Zeuthen <davidz@redhat.com>

1 files changed, 57 insertions, 0 deletions

diff --git a/src/polkitbackend/polkitbackendinteractiveauthority.c b/src/polkitbackend/polkitbackendinteractiveauthority.c
index 386a4c9..ae1a1bf 100644
--- a/src/polkitbackend/polkitbackendinteractiveauthority.c
+++ b/src/polkitbackend/polkitbackendinteractiveauthority.c
@@ -1796,6 +1796,60 @@ get_localized_data_for_challenge (PolkitBackendInteractiveAuthority *authority,
 }
 
 static void
+add_pid (PolkitDetails *details,
+         PolkitSubject *subject,
+         const gchar   *key)
+{
+  gchar buf[32];
+  gint pid;
+
+  if (POLKIT_IS_UNIX_PROCESS (subject))
+    {
+      pid = polkit_unix_process_get_pid (POLKIT_UNIX_PROCESS (subject));
+    }
+  else if (POLKIT_IS_SYSTEM_BUS_NAME (subject))
+    {
+      PolkitSubject *process;
+      GError *error;
+
+      error = NULL;
+      process = polkit_system_bus_name_get_process_sync (POLKIT_SYSTEM_BUS_NAME (subject),
+                                                         NULL,
+                                                         &error);
+      if (process == NULL)
+        {
+          g_printerr ("Error getting process for system bus name `%s': %s\n",
+                      polkit_system_bus_name_get_name (POLKIT_SYSTEM_BUS_NAME (subject)),
+                      error->message);
+          g_error_free (error);
+          goto out;
+        }
+      pid = polkit_unix_process_get_pid (POLKIT_UNIX_PROCESS (process));
+      g_object_unref (process);
+    }
+  else if (POLKIT_IS_UNIX_SESSION (subject))
+    {
+      goto out;
+    }
+  else
+    {
+      gchar *s;
+      s = polkit_subject_to_string (subject);
+      g_printerr ("Don't know how to get pid from subject of type %s: %s\n",
+                  g_type_name (G_TYPE_FROM_INSTANCE (subject)),
+                  s);
+      g_free (s);
+      goto out;
+    }
+
+  g_snprintf (buf, sizeof (buf), "%d", pid);
+  polkit_details_insert (details, key, buf);
+
+ out:
+  ;
+}
+
+static void
 authentication_agent_initiate_challenge (AuthenticationAgent         *agent,
                                          PolkitSubject               *subject,
                                          PolkitIdentity              *user_of_subject,
@@ -1866,6 +1920,9 @@ authentication_agent_initiate_challenge (AuthenticationAgent         *agent,
 
   agent->active_sessions = g_list_prepend (agent->active_sessions, session);
 
+  add_pid (localized_details, caller, "polkit.caller-pid");
+  add_pid (localized_details, subject, "polkit.subject-pid");
+
   details_gvariant = polkit_details_to_gvariant (localized_details);
   g_variant_ref_sink (details_gvariant);