1 files changed, 94 insertions, 0 deletions
diff --git a/plugin/auth_pipe/auth_pipe.c b/plugin/auth_pipe/auth_pipe.c
new file mode 100644
index 00000000..902add44
--- /dev/null
+++ b/plugin/auth_pipe/auth_pipe.c
@@ -0,0 +1,94 @@
+/* Copyright (C) 2015 Vladislav Vaintroub, Georg Richter and Monty Program Ab
+    
+    This program is free software; you can redistribute it and/or
+    modify it under the terms of the GNU General Public License as
+    published by the Free Software Foundation; version 2 of the
+    License.
+    
+    This program 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 General Public License for more details.
+    
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA */
+
+/**
+  @file
+
+  auth_pipe authentication plugin.
+
+  Authentication is successful if the connection is done via a named pipe 
+  pipe peer name matches mysql user name
+*/
+
+#include <mysql/plugin_auth.h>
+#include <string.h>
+#include <lmcons.h>
+
+
+/**
+  This authentication callback obtains user name using named pipe impersonation
+*/
+static int pipe_auth(MYSQL_PLUGIN_VIO *vio, MYSQL_SERVER_AUTH_INFO *info)
+{
+  unsigned char *pkt;
+  MYSQL_PLUGIN_VIO_INFO vio_info;
+  char username[UNLEN + 1];
+  DWORD username_length;
+  int ret;
+
+  /* no user name yet ? read the client handshake packet with the user name */
+  if (info->user_name == 0)
+  {
+    if (vio->read_packet(vio, &pkt) < 0)
+      return CR_ERROR;
+  }
+  info->password_used= PASSWORD_USED_NO_MENTION;
+  vio->info(vio, &vio_info);
+  if (vio_info.protocol != MYSQL_VIO_PIPE)
+    return CR_ERROR;
+
+  /* Impersonate the named pipe peer, and retrieve the user name */
+  if (!ImpersonateNamedPipeClient(vio_info.handle))
+    return CR_ERROR;
+
+  username_length=UNLEN;
+  ret= CR_ERROR;
+  if (GetUserName(username, &username_length))
+  {
+    /* Always compare names case-insensitive on Windows.*/
+    if (_stricmp(username, info->user_name) == 0)
+      ret= CR_OK;
+  }
+  RevertToSelf();
+
+  return ret;
+}
+
+static struct st_mysql_auth pipe_auth_handler=
+{
+  MYSQL_AUTHENTICATION_INTERFACE_VERSION,
+  0,
+  pipe_auth
+};
+
+maria_declare_plugin(auth_named_pipe)
+{
+  MYSQL_AUTHENTICATION_PLUGIN,
+  &pipe_auth_handler,
+  "named_pipe",
+  "Vladislav Vaintroub, Georg Richter",
+  "Windows named pipe based authentication",
+  PLUGIN_LICENSE_GPL,
+  NULL,
+  NULL,
+  0x0100,
+  NULL,
+  NULL,
+  "1.0",
+  MariaDB_PLUGIN_MATURITY_STABLE
+}
+maria_declare_plugin_end;
+