Add _dbus_credentials_to_string_append

Convert the credentials to a string; useful for logging.

2 files changed, 45 insertions, 1 deletions

diff --git a/dbus/dbus-credentials.c b/dbus/dbus-credentials.c
index f06d5c00..889166ba 100644
--- a/dbus/dbus-credentials.c
+++ b/dbus/dbus-credentials.c
@@ -502,6 +502,49 @@ _dbus_credentials_same_user (DBusCredentials    *credentials,
       strcmp (credentials->windows_sid, other_credentials->windows_sid) == 0));
 }
 
+/**
+ * Convert the credentials in this object to a human-readable
+ * string format, and append to the given string.
+ *
+ * @param credentials the object
+ * @param string append to this string
+ * @returns #FALSE if no memory
+ */
+dbus_bool_t
+_dbus_credentials_to_string_append (DBusCredentials    *credentials,
+                                    DBusString         *string)
+{
+  dbus_bool_t join;
+
+  join = FALSE;
+  if (credentials->unix_uid != DBUS_UID_UNSET)
+    {
+      if (!_dbus_string_append_printf (string, "uid=%d", credentials->unix_uid))
+        goto oom;
+      join = TRUE;
+    }
+  if (credentials->unix_pid != DBUS_PID_UNSET)
+    {
+      if (!_dbus_string_append_printf (string, "%spid=%d", join ? " " : "", credentials->unix_pid))
+        goto oom;
+      join = TRUE;
+    }
+  else
+    join = FALSE;
+  if (credentials->windows_sid != NULL)
+    {
+      if (!_dbus_string_append_printf (string, "%ssid=%s", join ? " " : "", credentials->windows_sid))
+        goto oom;
+      join = TRUE;
+    }
+  else
+    join = FALSE;
+
+  return TRUE;
+oom:
+  return FALSE;
+}
+
 /** @} */
 
 /* tests in dbus-credentials-util.c */
diff --git a/dbus/dbus-credentials.h b/dbus/dbus-credentials.h
index 25f31b79..ef6124fd 100644
--- a/dbus/dbus-credentials.h
+++ b/dbus/dbus-credentials.h
@@ -71,7 +71,8 @@ void             _dbus_credentials_clear                    (DBusCredentials
 DBusCredentials* _dbus_credentials_copy                     (DBusCredentials    *credentials);
 dbus_bool_t      _dbus_credentials_same_user                (DBusCredentials    *credentials,
                                                              DBusCredentials    *other_credentials);
-
+dbus_bool_t      _dbus_credentials_to_string_append         (DBusCredentials    *credentials,
+                                                             DBusString         *string);
 
 DBUS_END_DECLS