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|
/* +------------------------------------+
* | Inspire Internet Relay Chat Daemon |
* +------------------------------------+
*
* InspIRCd: (C) 2002-2010 InspIRCd Development Team
* See: http://wiki.inspircd.org/Credits
*
* This program is free but copyrighted software; see
* the file COPYING for details.
*
* ---------------------------------------------------
*/
#include "inspircd.h"
#include "xline.h"
#include "socket.h"
#include "socketengine.h"
#include "command_parse.h"
#include "dns.h"
#include "exitcodes.h"
#ifndef WIN32
#include <dirent.h>
#endif
#ifndef PURE_STATIC
bool ModuleManager::Load(const char* filename)
{
/* Don't allow people to specify paths for modules, it doesn't work as expected */
if (strchr(filename, '/'))
return false;
/* Do we have a glob pattern in the filename?
* The user wants to load multiple modules which
* match the pattern.
*/
if (strchr(filename,'*') || (strchr(filename,'?')))
{
int n_match = 0;
DIR* library = opendir(ServerInstance->Config->ModPath.c_str());
if (library)
{
/* Try and locate and load all modules matching the pattern */
dirent* entry = NULL;
while (0 != (entry = readdir(library)))
{
if (InspIRCd::Match(entry->d_name, filename, ascii_case_insensitive_map))
{
if (!this->Load(entry->d_name))
n_match++;
}
}
closedir(library);
}
/* Loadmodule will now return false if any one of the modules failed
* to load (but wont abort when it encounters a bad one) and when 1 or
* more modules were actually loaded.
*/
return (n_match > 0 ? false : true);
}
char modfile[MAXBUF];
snprintf(modfile,MAXBUF,"%s/%s",ServerInstance->Config->ModPath.c_str(),filename);
std::string filename_str = filename;
if (!ServerConfig::FileExists(modfile))
{
LastModuleError = "Module file could not be found: " + filename_str;
ServerInstance->Logs->Log("MODULE", DEFAULT, LastModuleError);
return false;
}
if (Modules.find(filename_str) != Modules.end())
{
LastModuleError = "Module " + filename_str + " is already loaded, cannot load a module twice!";
ServerInstance->Logs->Log("MODULE", DEFAULT, LastModuleError);
return false;
}
Module* newmod = NULL;
DLLManager* newhandle = new DLLManager(modfile);
try
{
newmod = newhandle->CallInit();
if (newmod)
{
newmod->ModuleSourceFile = filename_str;
newmod->ModuleDLLManager = newhandle;
Version v = newmod->GetVersion();
ServerInstance->Logs->Log("MODULE", DEFAULT,"New module introduced: %s (Module version %s)%s",
filename, newhandle->GetVersion().c_str(), (!(v.Flags & VF_VENDOR) ? " [3rd Party]" : " [Vendor]"));
Modules[filename_str] = newmod;
}
else
{
LastModuleError = "Unable to load " + filename_str + ": " + newhandle->LastError();
ServerInstance->Logs->Log("MODULE", DEFAULT, LastModuleError);
delete newhandle;
return false;
}
}
catch (CoreException& modexcept)
{
// failure in module constructor
delete newmod;
delete newhandle;
LastModuleError = "Unable to load " + filename_str + ": " + modexcept.GetReason();
ServerInstance->Logs->Log("MODULE", DEFAULT, LastModuleError);
return false;
}
this->ModCount++;
FOREACH_MOD(I_OnLoadModule,OnLoadModule(newmod));
/* We give every module a chance to re-prioritize when we introduce a new one,
* not just the one thats loading, as the new module could affect the preference
* of others
*/
for(int tries = 0; tries < 20; tries++)
{
prioritizationState = tries > 0 ? PRIO_STATE_LAST : PRIO_STATE_FIRST;
for (std::map<std::string, Module*>::iterator n = Modules.begin(); n != Modules.end(); ++n)
n->second->Prioritize();
if (prioritizationState == PRIO_STATE_LAST)
break;
if (tries == 19)
ServerInstance->Logs->Log("MODULE", DEFAULT, "Hook priority dependency loop detected while loading " + filename_str);
}
ServerInstance->BuildISupport();
return true;
}
namespace {
struct UnloadAction : public HandlerBase0<void>
{
Module* const mod;
UnloadAction(Module* m) : mod(m) {}
void Call()
{
DLLManager* dll = mod->ModuleDLLManager;
ServerInstance->Modules->DoSafeUnload(mod);
ServerInstance->GlobalCulls.Apply();
delete dll;
ServerInstance->GlobalCulls.AddItem(this);
}
};
struct ReloadAction : public HandlerBase0<void>
{
Module* const mod;
HandlerBase1<void, bool>* const callback;
ReloadAction(Module* m, HandlerBase1<void, bool>* c)
: mod(m), callback(c) {}
void Call()
{
DLLManager* dll = mod->ModuleDLLManager;
std::string name = mod->ModuleSourceFile;
ServerInstance->Modules->DoSafeUnload(mod);
ServerInstance->GlobalCulls.Apply();
delete dll;
bool rv = ServerInstance->Modules->Load(name.c_str());
callback->Call(rv);
ServerInstance->GlobalCulls.AddItem(this);
}
};
}
bool ModuleManager::Unload(Module* mod)
{
if (!CanUnload(mod))
return false;
ServerInstance->AtomicActions.AddAction(new UnloadAction(mod));
return true;
}
void ModuleManager::Reload(Module* mod, HandlerBase1<void, bool>* callback)
{
if (CanUnload(mod))
ServerInstance->AtomicActions.AddAction(new ReloadAction(mod, callback));
else
callback->Call(false);
}
/* We must load the modules AFTER initializing the socket engine, now */
void ModuleManager::LoadAll()
{
ModCount = 0;
printf("\nLoading core commands");
fflush(stdout);
DIR* library = opendir(ServerInstance->Config->ModPath.c_str());
if (library)
{
dirent* entry = NULL;
while (0 != (entry = readdir(library)))
{
if (InspIRCd::Match(entry->d_name, "cmd_*.so", ascii_case_insensitive_map))
{
printf(".");
fflush(stdout);
if (!Load(entry->d_name))
{
ServerInstance->Logs->Log("MODULE", DEFAULT, this->LastError());
printf_c("\n[\033[1;31m*\033[0m] %s\n\n", this->LastError().c_str());
ServerInstance->Exit(EXIT_STATUS_MODULE);
}
}
}
closedir(library);
printf("\n");
}
ConfigTagList tags = ServerInstance->Config->ConfTags("module");
for(ConfigIter i = tags.first; i != tags.second; ++i)
{
ConfigTag* tag = i->second;
std::string name = tag->getString("name");
printf_c("[\033[1;32m*\033[0m] Loading module:\t\033[1;32m%s\033[0m\n",name.c_str());
if (!this->Load(name.c_str()))
{
ServerInstance->Logs->Log("MODULE", DEFAULT, this->LastError());
printf_c("\n[\033[1;31m*\033[0m] %s\n\n", this->LastError().c_str());
ServerInstance->Exit(EXIT_STATUS_MODULE);
}
}
}
void ModuleManager::UnloadAll()
{
/* We do this more than once, so that any service providers get a
* chance to be unhooked by the modules using them, but then get
* a chance to be removed themsleves.
*
* Note: this deliberately does NOT delete the DLLManager objects
*/
for (int tries = 0; tries < 4; tries++)
{
std::map<std::string, Module*>::iterator i = Modules.begin();
while (i != Modules.end())
{
std::map<std::string, Module*>::iterator me = i++;
if (CanUnload(me->second))
{
DoSafeUnload(me->second);
}
}
ServerInstance->GlobalCulls.Apply();
}
}
#endif
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