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-rw-r--r--plugin/auth_gssapi/server_plugin.cc161
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diff --git a/plugin/auth_gssapi/server_plugin.cc b/plugin/auth_gssapi/server_plugin.cc
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+/* Copyright (c) 2015, Shuang Qiu, Robbie Harwood,
+ Vladislav Vaintroub & MariaDB Corporation
+
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are met:
+
+ 1. Redistributions of source code must retain the above copyright notice,
+ this list of conditions and the following disclaimer.
+
+ 2. Redistributions in binary form must reproduce the above copyright notice,
+ this list of conditions and the following disclaimer in the documentation
+ and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ POSSIBILITY OF SUCH DAMAGE.
+*/
+
+/**
+ @file
+
+ GSSAPI authentication plugin, server side
+*/
+
+typedef unsigned long long my_ulonglong;
+
+#include <stdlib.h>
+#include <mysqld_error.h>
+#include <typelib.h>
+#include <mysql/plugin_auth.h>
+#include "string.h"
+#include "server_plugin.h"
+#include "common.h"
+
+/* First packet sent from server to client, contains srv_principal_name\0mech\0 */
+static char first_packet[PRINCIPAL_NAME_MAX + MECH_NAME_MAX +2];
+static int first_packet_len;
+
+/*
+ Target name in GSSAPI/SSPI , for Kerberos it is service principal name
+ (often user principal name of the server user will work)
+*/
+char *srv_principal_name;
+char *srv_keytab_path;
+const char *srv_mech_name="";
+unsigned long srv_mech;
+
+/**
+ The main server function of the GSSAPI plugin.
+ */
+static int gssapi_auth(MYSQL_PLUGIN_VIO *vio, MYSQL_SERVER_AUTH_INFO *auth_info)
+{
+ /* Send first packet with target name and mech name */
+ if (vio->write_packet(vio, (unsigned char *)first_packet, first_packet_len))
+ return CR_ERROR;
+
+ return auth_server(vio, auth_info);
+}
+
+static int initialize_plugin(void *unused)
+{
+ int rc;
+ rc = plugin_init();
+ if (rc)
+ return rc;
+
+ strcpy(first_packet, srv_principal_name);
+ strcpy(first_packet + strlen(srv_principal_name) + 1,srv_mech_name);
+ first_packet_len = (int)(strlen(srv_principal_name) + strlen(srv_mech_name) + 2);
+
+ return 0;
+}
+
+static int deinitialize_plugin(void *unused)
+{
+ return plugin_deinit();
+}
+
+#ifdef PLUGIN_GSSAPI
+/* system variable */
+static MYSQL_SYSVAR_STR(keytab_path, srv_keytab_path,
+ PLUGIN_VAR_RQCMDARG|PLUGIN_VAR_READONLY,
+ "Keytab file path for Kerberos authentication",
+ NULL,
+ NULL,
+ "");
+#endif
+
+static MYSQL_SYSVAR_STR(principal_name, srv_principal_name,
+ PLUGIN_VAR_RQCMDARG|PLUGIN_VAR_READONLY,
+ "GSSAPI target name - service principal name for Kerberos authentication.",
+ NULL,
+ NULL,
+ "");
+#ifdef PLUGIN_SSPI
+static const char* mech_names[] = {
+ "Kerberos",
+ "Negotiate",
+ "",
+ NULL
+};
+static TYPELIB mech_name_typelib = {
+ 3,
+ "mech_name_typelib",
+ mech_names,
+ NULL
+};
+static MYSQL_SYSVAR_ENUM(mech_name, srv_mech,
+ PLUGIN_VAR_RQCMDARG|PLUGIN_VAR_READONLY,
+ "GSSAPI mechanism",
+ NULL,
+ NULL,
+ 2,&mech_name_typelib);
+#endif
+
+static struct st_mysql_sys_var *system_variables[]= {
+ MYSQL_SYSVAR(principal_name),
+#ifdef PLUGIN_SSPI
+ MYSQL_SYSVAR(mech_name),
+#endif
+#ifdef PLUGIN_GSSAPI
+ MYSQL_SYSVAR(keytab_path),
+#endif
+ NULL
+};
+
+/* Register authentication plugin */
+static struct st_mysql_auth server_handler= {
+ MYSQL_AUTHENTICATION_INTERFACE_VERSION,
+ "auth_gssapi_client",
+ gssapi_auth, NULL, NULL
+};
+
+maria_declare_plugin(auth_gssapi)
+{
+ MYSQL_AUTHENTICATION_PLUGIN,
+ &server_handler,
+ "gssapi",
+ "Shuang Qiu, Robbie Harwood, Vladislav Vaintroub",
+ "Plugin for GSSAPI/SSPI based authentication.",
+ PLUGIN_LICENSE_BSD,
+ initialize_plugin,
+ deinitialize_plugin, /* destructor */
+ 0x0100, /* version */
+ NULL, /* status variables */
+ system_variables, /* system variables */
+ "1.0",
+ MariaDB_PLUGIN_MATURITY_STABLE
+}
+maria_declare_plugin_end;
+