Drizzled Public API Documentation

authentication.cc
00001 /* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
00002  *  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
00003  *
00004  *  Copyright (C) 2008 Sun Microsystems, Inc.
00005  *
00006  *  This program is free software; you can redistribute it and/or modify
00007  *  it under the terms of the GNU General Public License as published by
00008  *  the Free Software Foundation; either version 2 of the License, or
00009  *  (at your option) any later version.
00010  *
00011  *  This program is distributed in the hope that it will be useful,
00012  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
00013  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00014  *  GNU General Public License for more details.
00015  *
00016  *  You should have received a copy of the GNU General Public License
00017  *  along with this program; if not, write to the Free Software
00018  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
00019  */
00020 
00021 #include <config.h>
00022 #include <drizzled/plugin/authentication.h>
00023 #include <drizzled/error.h>
00024 #include <drizzled/gettext.h>
00025 #include <drizzled/identifier.h>
00026 
00027 #include <vector>
00028 
00029 namespace drizzled
00030 {
00031 
00032 std::vector<plugin::Authentication *> all_authentication;
00033 
00034 
00035 bool plugin::Authentication::addPlugin(plugin::Authentication *auth)
00036 {
00037   if (auth != NULL)
00038     all_authentication.push_back(auth);
00039 
00040   return false;
00041 }
00042 
00043 void plugin::Authentication::removePlugin(plugin::Authentication *auth)
00044 {
00045   if (auth != NULL)
00046     all_authentication.erase(std::find(all_authentication.begin(),
00047                                        all_authentication.end(),
00048                                        auth));
00049 }
00050 
00051 class AuthenticateBy : public std::unary_function<plugin::Authentication *, bool>
00052 {
00053   const identifier::User &sctx;
00054   const std::string &password;
00055 
00056 public:
00057   AuthenticateBy(const identifier::User &sctx_arg, const std::string &password_arg) :
00058     std::unary_function<plugin::Authentication *, bool>(),
00059     sctx(sctx_arg), password(password_arg) {}
00060 
00061   inline result_type operator()(argument_type auth)
00062   {
00063     return auth->authenticate(sctx, password);
00064   }
00065 };
00066 
00067 bool plugin::Authentication::isAuthenticated(drizzled::identifier::User::const_reference sctx,
00068                                              const std::string &password)
00069 {
00070   /* Use find_if instead of foreach so that we can collect return codes */
00071   std::vector<plugin::Authentication *>::iterator iter=
00072     std::find_if(all_authentication.begin(), all_authentication.end(),
00073                  AuthenticateBy(sctx, password));
00074 
00075   /* We only require one plugin to return success in order to authenticate.
00076    * If iter is == end() here, that means that all of the plugins returned
00077    * false, which means they all failed.
00078    */
00079   if (iter == all_authentication.end())
00080   {
00081     error::access(sctx);
00082 
00083     return false;
00084   }
00085 
00086   return true;
00087 }
00088 
00089 } /* namespace drizzled */