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davmail/jsmooth-0.9.9-7-patch/skeletons/commonjava/JVMRegistryLookup.cpp

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/*
JSmooth: a VM wrapper toolkit for Windows
Copyright (C) 2003-2007 Rodrigo Reyes <reyes@charabia.net>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "JVMRegistryLookup.h"
struct jvmsorter_dec : public binary_function<const SunJVMLauncher&, const SunJVMLauncher&, bool>
{
bool operator()(const SunJVMLauncher& s1, const SunJVMLauncher& s2)
{
return s2 < s1;
}
};
vector<SunJVMLauncher> JVMRegistryLookup::lookupJVM()
{
vector<SunJVMLauncher> res = JVMRegistryLookup::lookup(HKEY_LOCAL_MACHINE, "SOFTWARE\\JavaSoft\\Java Runtime Environment");
vector<SunJVMLauncher> res2 = JVMRegistryLookup::lookup(HKEY_LOCAL_MACHINE, "SOFTWARE\\JavaSoft\\Java Development Kit");
for (vector<SunJVMLauncher>::iterator i = res2.begin(); i != res2.end(); i++)
{
res.insert(res.end(), *i);
}
sort(res.begin(), res.end(), jvmsorter_dec() );
return res;
}
vector<SunJVMLauncher> JVMRegistryLookup::lookup(HKEY key, const string& path)
{
vector<SunJVMLauncher> result;
HKEY hKey;
LONG error = ERROR_SUCCESS;
LONG val = RegOpenKeyEx(key, path.c_str(), 0, KEY_READ, &hKey);
unsigned long buffersize = 1024;
char buffer[1024];
for (int i=0; RegEnumKey(hKey, i, buffer, buffersize) == ERROR_SUCCESS; i++)
{
int v = i;
HKEY version;
int foundver = RegOpenKeyEx(hKey, buffer, 0, KEY_READ, &version);
if (foundver == ERROR_SUCCESS)
{
std::string versionname(buffer);
HKEY runtimelib;
unsigned long datatype;
std::string runtimelibstr = "";
std::string javahomestr = "";
unsigned char *b = (unsigned char*)buffer;
buffersize = 1024;
int foundlib = RegQueryValueEx(version, TEXT("RuntimeLib"),
NULL,
&datatype,
b,
&buffersize);
if (foundlib == ERROR_SUCCESS)
{
runtimelibstr = buffer;
}
b = (unsigned char*)buffer;
buffersize = 1024;
int foundhome = RegQueryValueEx(version, TEXT("JavaHome"),
NULL,
&datatype,
b,
&buffersize);
if (foundhome == ERROR_SUCCESS)
{
javahomestr = buffer;
}
if ((runtimelibstr.length()>0) || (javahomestr.length()>0))
{
SunJVMLauncher vm;
vm.RuntimeLibPath = runtimelibstr;
vm.JavaHome = javahomestr;
vm.VmVersion = Version(versionname);
result.push_back(vm);
char buffer[244];
sprintf(buffer, "V(%d)(%d)(%d)", vm.VmVersion.getMajor(), vm.VmVersion.getMinor(), vm.VmVersion.getSubMinor());
DEBUG(std::string("JVM Lookup: found VM (") + buffer + ") in registry.");
}
}
}
return result;
}