src/modmanager_static.cpp

   1 /*
   2  * InspIRCd -- Internet Relay Chat Daemon
   3  *
   4  *   Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
   5  *
   6  * This file is part of InspIRCd.  InspIRCd is free software: you can
   7  * redistribute it and/or modify it under the terms of the GNU General Public
   8  * License as published by the Free Software Foundation, version 2.
   9  *
  10  * This program is distributed in the hope that it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  12  * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
  13  * details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19
  20 #define MODNAME cmd_all
  21
  22 #include "inspircd.h"
  23 #include "exitcodes.h"
  24 #include <iostream>
  25
  26 #ifdef PURE_STATIC
  27
  28 typedef std::map<std::string, AllModuleList*> modmap;
  29 static std::vector<AllCommandList::fn>* cmdlist = NULL;
  30 static modmap* modlist = NULL;
  31
  32 AllCommandList::AllCommandList(fn cmd)
  33 {
  34         if (!cmdlist)
  35                 cmdlist = new std::vector<AllCommandList::fn>();
  36         cmdlist->push_back(cmd);
  37 }
  38
  39 AllModuleList::AllModuleList(AllModuleList::fn mod, const std::string& Name) : init(mod), name(Name)
  40 {
  41         if (!modlist)
  42                 modlist = new modmap();
  43         modlist->insert(std::make_pair(Name, this));
  44 }
  45
  46 class AllModule : public Module
  47 {
  48         std::vector<Command*> cmds;
  49  public:
  50         AllModule()
  51         {
  52                 if (!cmdlist)
  53                         return;
  54                 try
  55                 {
  56                         cmds.reserve(cmdlist->size());
  57                         for(std::vector<AllCommandList::fn>::iterator i = cmdlist->begin(); i != cmdlist->end(); ++i)
  58                         {
  59                                 Command* c = (*i)(this);
  60                                 cmds.push_back(c);
  61                                 ServerInstance->AddCommand(c);
  62                         }
  63                 }
  64                 catch (...)
  65                 {
  66                         this->AllModule::~AllModule();
  67                         throw;
  68                 }
  69         }
  70
  71         ~AllModule()
  72         {
  73                 for(std::vector<Command*>::iterator i = cmds.begin(); i != cmds.end(); ++i)
  74                         delete *i;
  75         }
  76
  77         Version GetVersion()
  78         {
  79                 return Version("All commands", VF_VENDOR|VF_CORE);
  80         }
  81 };
  82
  83 MODULE_INIT(AllModule)
  84
  85 bool ModuleManager::Load(const std::string& name, bool defer)
  86 {
  87         modmap::iterator it = modlist->find(name);
  88         if (it == modlist->end())
  89                 return false;
  90         Module* mod = NULL;
  91         try
  92         {
  93                 mod = (*it->second->init)();
  94                 mod->ModuleSourceFile = name;
  95                 mod->ModuleDLLManager = NULL;
  96                 mod->dying = false;
  97                 Modules[name] = mod;
  98                 if (defer)
  99                 {
 100                         ServerInstance->Logs->Log("MODULE", DEFAULT,"New module introduced: %s", name.c_str());
 101                         return true;
 102                 }
 103                 else
 104                 {
 105                         mod->init();
 106                 }
 107         }
 108         catch (CoreException& modexcept)
 109         {
 110                 if (mod)
 111                         DoSafeUnload(mod);
 112                 ServerInstance->Logs->Log("MODULE", DEFAULT, "Unable to load " + name + ": " + modexcept.GetReason());
 113                 return false;
 114         }
 115         FOREACH_MOD(I_OnLoadModule,OnLoadModule(mod));
 116         /* We give every module a chance to re-prioritize when we introduce a new one,
 117          * not just the one thats loading, as the new module could affect the preference
 118          * of others
 119          */
 120         for(int tries = 0; tries < 20; tries++)
 121         {
 122                 prioritizationState = tries > 0 ? PRIO_STATE_LAST : PRIO_STATE_FIRST;
 123                 for (std::map<std::string, Module*>::iterator n = Modules.begin(); n != Modules.end(); ++n)
 124                         n->second->Prioritize();
 125
 126                 if (prioritizationState == PRIO_STATE_LAST)
 127                         break;
 128                 if (tries == 19)
 129                         ServerInstance->Logs->Log("MODULE", DEFAULT, "Hook priority dependency loop detected while loading " + name);
 130         }
 131
 132         ServerInstance->BuildISupport();
 133         return true;
 134 }
 135
 136 namespace {
 137         struct UnloadAction : public HandlerBase0<void>
 138         {
 139                 Module* const mod;
 140                 UnloadAction(Module* m) : mod(m) {}
 141                 void Call()
 142                 {
 143                         ServerInstance->Modules->DoSafeUnload(mod);
 144                         ServerInstance->GlobalCulls.Apply();
 145                         ServerInstance->GlobalCulls.AddItem(this);
 146                 }
 147         };
 148
 149         struct ReloadAction : public HandlerBase0<void>
 150         {
 151                 Module* const mod;
 152                 HandlerBase1<void, bool>* const callback;
 153                 ReloadAction(Module* m, HandlerBase1<void, bool>* c)
 154                         : mod(m), callback(c) {}
 155                 void Call()
 156                 {
 157                         std::string name = mod->ModuleSourceFile;
 158                         ServerInstance->Modules->DoSafeUnload(mod);
 159                         ServerInstance->GlobalCulls.Apply();
 160                         bool rv = ServerInstance->Modules->Load(name.c_str());
 161                         if (callback)
 162                                 callback->Call(rv);
 163                         ServerInstance->GlobalCulls.AddItem(this);
 164                 }
 165         };
 166 }
 167
 168 bool ModuleManager::Unload(Module* mod)
 169 {
 170         if (!CanUnload(mod))
 171                 return false;
 172         ServerInstance->AtomicActions.AddAction(new UnloadAction(mod));
 173         return true;
 174 }
 175
 176 void ModuleManager::Reload(Module* mod, HandlerBase1<void, bool>* callback)
 177 {
 178         if (CanUnload(mod))
 179                 ServerInstance->AtomicActions.AddAction(new ReloadAction(mod, callback));
 180         else if (callback)
 181                 callback->Call(false);
 182 }
 183
 184 void ModuleManager::LoadAll()
 185 {
 186         Load("cmd_all", true);
 187         Load("cmd_whowas.so", true);
 188         Load("cmd_lusers.so", true);
 189
 190         ConfigTagList tags = ServerInstance->Config->ConfTags("module");
 191         for(ConfigIter i = tags.first; i != tags.second; ++i)
 192         {
 193                 ConfigTag* tag = i->second;
 194                 std::string name = tag->getString("name");
 195                 std::cout << "[" << con_green << "*" << con_reset << "] Loading module:\t" << con_green << name << con_reset << std::endl;
 196
 197                 if (!this->Load(name, true))
 198                 {
 199                         ServerInstance->Logs->Log("MODULE", DEFAULT, this->LastError());
 200                         std::cout << std::endl << "[" << con_red << "*" << con_reset << "] " << this->LastError() << std::endl << std::endl;
 201                         ServerInstance->Exit(EXIT_STATUS_MODULE);
 202                 }
 203         }
 204
 205         for(std::map<std::string, Module*>::iterator i = Modules.begin(); i != Modules.end(); i++)
 206         {
 207                 Module* mod = i->second;
 208                 try
 209                 {
 210                         mod->init();
 211                 }
 212                 catch (CoreException& modexcept)
 213                 {
 214                         LastModuleError = "Unable to initialize " + mod->ModuleSourceFile + ": " + modexcept.GetReason();
 215                         ServerInstance->Logs->Log("MODULE", DEFAULT, LastModuleError);
 216                         std::cout << std::endl << "[" << con_red << "*" << con_reset << "] " << LastModuleError << std::endl << std::endl;
 217                         ServerInstance->Exit(EXIT_STATUS_MODULE);
 218                 }
 219         }
 220
 221         /* We give every module a chance to re-prioritize when we introduce a new one,
 222          * not just the one thats loading, as the new module could affect the preference
 223          * of others
 224          */
 225         for(int tries = 0; tries < 20; tries++)
 226         {
 227                 prioritizationState = tries > 0 ? PRIO_STATE_LAST : PRIO_STATE_FIRST;
 228                 for (std::map<std::string, Module*>::iterator n = Modules.begin(); n != Modules.end(); ++n)
 229                         n->second->Prioritize();
 230
 231                 if (prioritizationState == PRIO_STATE_LAST)
 232                         break;
 233                 if (tries == 19)
 234                 {
 235                         ServerInstance->Logs->Log("MODULE", DEFAULT, "Hook priority dependency loop detected");
 236                         ServerInstance->Exit(EXIT_STATUS_MODULE);
 237                 }
 238         }
 239 }
 240
 241 #endif