granicus.if.org Git - icinga2/blob - lib/icinga/usergroup.cpp

   1 /******************************************************************************
   2  * Icinga 2                                                                   *
   3  * Copyright (C) 2012-2017 Icinga Development Team (https://www.icinga.com/)  *
   4  *                                                                            *
   5  * This program is free software; you can redistribute it and/or              *
   6  * modify it under the terms of the GNU General Public License                *
   7  * as published by the Free Software Foundation; either version 2             *
   8  * of the License, or (at your option) any later version.                     *
   9  *                                                                            *
  10  * This program is distributed in the hope that it will be useful,            *
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of             *
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the              *
  13  * GNU General Public License for more details.                               *
  14  *                                                                            *
  15  * You should have received a copy of the GNU General Public License          *
  16  * along with this program; if not, write to the Free Software Foundation     *
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.             *
  18  ******************************************************************************/
  19
  20 #include "icinga/usergroup.hpp"
  21 #include "icinga/usergroup.tcpp"
  22 #include "config/objectrule.hpp"
  23 #include "config/configitem.hpp"
  24 #include "base/configtype.hpp"
  25 #include "base/objectlock.hpp"
  26 #include "base/logger.hpp"
  27 #include "base/context.hpp"
  28 #include "base/workqueue.hpp"
  29
  30 using namespace icinga;
  31
  32 REGISTER_TYPE(UserGroup);
  33
  34 INITIALIZE_ONCE([]() {
  35         ObjectRule::RegisterType("UserGroup");
  36 });
  37
  38 bool UserGroup::EvaluateObjectRule(const User::Ptr& user, const ConfigItem::Ptr& group)
  39 {
  40         String group_name = group->GetName();
  41
  42         CONTEXT("Evaluating rule for group '" + group_name + "'");
  43
  44         ScriptFrame frame;
  45         if (group->GetScope())
  46                 group->GetScope()->CopyTo(frame.Locals);
  47         frame.Locals->Set("user", user);
  48
  49         if (!group->GetFilter()->Evaluate(frame).GetValue().ToBool())
  50                 return false;
  51
  52         Log(LogDebug, "UserGroup")
  53             << "Assigning membership for group '" << group_name << "' to user '" << user->GetName() << "'";
  54
  55         Array::Ptr groups = user->GetGroups();
  56         groups->Add(group_name);
  57
  58         return true;
  59 }
  60
  61 void UserGroup::EvaluateObjectRules(const User::Ptr& user)
  62 {
  63         CONTEXT("Evaluating group membership for user '" + user->GetName() + "'");
  64
  65         for (const ConfigItem::Ptr& group : ConfigItem::GetItems(UserGroup::TypeInstance))
  66         {
  67                 if (!group->GetFilter())
  68                         continue;
  69
  70                 EvaluateObjectRule(user, group);
  71         }
  72 }
  73
  74 std::set<User::Ptr> UserGroup::GetMembers(void) const
  75 {
  76         boost::mutex::scoped_lock lock(m_UserGroupMutex);
  77         return m_Members;
  78 }
  79
  80 void UserGroup::AddMember(const User::Ptr& user)
  81 {
  82         user->AddGroup(GetName());
  83
  84         boost::mutex::scoped_lock lock(m_UserGroupMutex);
  85         m_Members.insert(user);
  86 }
  87
  88 void UserGroup::RemoveMember(const User::Ptr& user)
  89 {
  90         boost::mutex::scoped_lock lock(m_UserGroupMutex);
  91         m_Members.erase(user);
  92 }
  93
  94 bool UserGroup::ResolveGroupMembership(const User::Ptr& user, bool add, int rstack) {
  95
  96         if (add && rstack > 20) {
  97                 Log(LogWarning, "UserGroup")
  98                     << "Too many nested groups for group '" << GetName() << "': User '"
  99                     << user->GetName() << "' membership assignment failed.";
 100
 101                 return false;
 102         }
 103
 104         Array::Ptr groups = GetGroups();
 105
 106         if (groups && groups->GetLength() > 0) {
 107                 ObjectLock olock(groups);
 108
 109                 for (const String& name : groups) {
 110                         UserGroup::Ptr group = UserGroup::GetByName(name);
 111
 112                         if (group && !group->ResolveGroupMembership(user, add, rstack + 1))
 113                                 return false;
 114                 }
 115         }
 116
 117         if (add)
 118                 AddMember(user);
 119         else
 120                 RemoveMember(user);
 121
 122         return true;
 123 }
 124