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Diffstat (limited to 'plugin/auth_gssapi/server_plugin.cc')
| -rw-r--r-- | plugin/auth_gssapi/server_plugin.cc | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/plugin/auth_gssapi/server_plugin.cc b/plugin/auth_gssapi/server_plugin.cc new file mode 100644 index 00000000..c45452ce --- /dev/null +++ b/plugin/auth_gssapi/server_plugin.cc @@ -0,0 +1,161 @@ +/* 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; + |