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/* +------------------------------------+
* | Inspire Internet Relay Chat Daemon |
* +------------------------------------+
*
* InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
* E-mail:
* <brain@chatspike.net>
* <Craig@chatspike.net>
*
* Written by Craig Edwards, Craig McLure, and others.
* This program is free but copyrighted software; see
* the file COPYING for details.
*
* ---------------------------------------------------
*/
using namespace std;
#include "inspircd_config.h"
#include "inspircd_io.h"
#include "globals.h"
#include "dynamic.h"
#ifndef STATIC_LINK
#include <dlfcn.h>
#else
#include "modlist.h"
#endif
#include "inspstring.h"
#include "helperfuncs.h"
#include <unistd.h>
#include <sys/types.h>
#include <stdio.h>
extern ServerConfig* Config;
DLLManager::DLLManager(char *fname)
{
if (!strstr(fname,".so"))
{
err = "This doesn't look like a module file to me...";
return;
}
#ifdef STATIC_LINK
this->staticname[0] = '\0';
log(DEBUG,"Loading core-compiled module '%s'",fname);
for (int j = 0; modsyms[j].name; j++)
{
log(DEBUG,"Check %s",modsyms[j].name);
if (!strcmp(modsyms[j].name,fname))
{
log(DEBUG,"Found %s",fname);
strlcpy(this->staticname,fname,1020);
err = 0;
return;
}
}
err = "Module is not statically compiled into the ircd";
#else
#ifdef IS_CYGWIN
// Cygwin behaviour is handled slightly differently
// With the advent of dynamic modules. Because Windows
// wont let you overwrite a file which is currently in
// Use, we can safely attempt to load the module from its
// Current location :)
h = dlopen(fname, RTLD_NOW );
err = (char*)dlerror();
#else
// Copy the library to a temp location, this makes recompiles
// a little safer if the ircd is running at the time as the
// shared libraries are mmap()ed and not doing this causes
// segfaults.
FILE* x = fopen(fname,"rb");
if (!x)
{
err = "Module file not found or cannot access, game over man!";
return;
}
char tmpfile_template[255];
char buffer[65536];
snprintf(tmpfile_template, 255, "%s/inspircd_file.so.%d.XXXXXXXXXX",Config->TempDir,getpid());
int fd = mkstemp(tmpfile_template);
while (!feof(x))
{
int n = fread(buffer, 1, 65535, x);
if (n)
write(fd,buffer,n);
}
// Try to open the library now and get any error message.
h = dlopen(tmpfile_template, RTLD_NOW );
err = (char*)dlerror();
close(fd);
// We can delete the tempfile once it's loaded, leaving just the inode.
if (!Config->debugging)
unlink(tmpfile_template);
#endif
#endif
}
DLLManager::~DLLManager()
{
#ifndef STATIC_LINK
// close the library if it isn't null
if (h != 0)
dlclose(h);
#endif
}
#ifdef STATIC_LINK
bool DLLManager::GetSymbol(initfunc* &v, char *sym_name)
{
log(DEBUG,"Symbol search...");
for (int j = 0; modsyms[j].name; j++)
{
if (!strcmp(this->staticname,modsyms[j].name))
{
log(DEBUG,"Loading symbol...");
v = modsyms[j].value;
err = 0;
return true;
}
}
err = "Module symbol missing from the core";
return false;
}
#else
bool DLLManager::GetSymbol(void **v, char *sym_name)
{
// try extract a symbol from the library
// get any error message is there is any
if(h != 0)
{
*v = dlsym( h, sym_name );
err = (char*)dlerror();
if( err == 0 )
return true;
else
return false;
}
else
{
return false;
}
}
#endif
DLLFactoryBase::DLLFactoryBase(char *fname, char *factory) : DLLManager(fname)
{
// try get the factory function if there is no error yet
factory_func = 0;
if(LastError() == 0)
{
#ifdef STATIC_LINK
GetSymbol( factory_func, factory ? factory : (char*)"init_module" );
#else
GetSymbol( (void **)&factory_func, factory ? factory : (char*)"init_module" );
#endif
}
}
DLLFactoryBase::~DLLFactoryBase()
{
}
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