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#include <stdlib.h>
#include <string.h>
#include <windows.h>
#include "pdj.h"
int getuglylibpath(char *path) {
HMODULE hmodule = GetModuleHandle("pdj.dll");
char dllPath[BUFFER_SIZE];
int rc;
if ( hmodule == NULL ) {
post("pdj: can't get windows dll handle");
strcpy(path, ".");
return 1;
}
rc = GetModuleFileName(hmodule, dllPath, 1023);
if ( rc == 0 || rc == 1023 ) {
post("pdj: can't get windows dll path");
strcpy(path, ".");
return 1;
}
dllPath[strlen(dllPath)-8] = 0;
strcpy(path, dllPath);
return 0;
}
static char *getJavaHomeFromReg(char *javaHome) {
char keyName[BUFFER_SIZE] = "Software\\JavaSoft\\Java Development Kit";
char *dest;
int size = BUFFER_SIZE;
HKEY hKey;
long rc;
rc = RegOpenKeyEx(HKEY_LOCAL_MACHINE, keyName, 0, KEY_READ, &hKey);
if ( rc != ERROR_SUCCESS )
return NULL;
strcat(keyName, "\\");
dest = strlen(keyName) + keyName;
rc = RegQueryValueEx(hKey, "CurrentVersion", NULL, NULL,
(LPBYTE) dest, &size);
RegCloseKey(hKey);
if ( rc != ERROR_SUCCESS )
return NULL;
rc = RegOpenKeyEx(HKEY_LOCAL_MACHINE, keyName, 0, KEY_READ, &hKey);
if ( rc != ERROR_SUCCESS )
return NULL;
size = BUFFER_SIZE;
rc = RegQueryValueEx(hKey, "JavaHome", NULL, NULL,
(LPBYTE) javaHome, &size);
RegCloseKey(hKey);
if ( rc != ERROR_SUCCESS )
return NULL;
return javaHome;
}
JNI_CreateJavaVM_func *linkjvm(char *vm_type) {
HINSTANCE jvmDll = (HINSTANCE)NULL;
JNI_CreateJavaVM_func *func;
char work[BUFFER_SIZE];
char *javahome = pdj_getProperty("pdj.JAVA_HOME");
void *libVM;
// default config or no config ? try
if ( javahome == NULL || javahome[0] == '/' ) {
javahome = NULL;
javahome = getenv("JAVA_HOME");
if ( javahome == NULL ) {
javahome = getJavaHomeFromReg(work);
if ( javahome == NULL ) {
post("pdj: unable to find any java VM. Please set JAVA_HOME environment variable");
return NULL;
}
}
}
strcpy(work, javahome);
strcat(work, "\\jre\\bin\\");
strcat(work, vm_type);
strcat(work, "\\jvm.dll");
jvmDll = LoadLibrary(work);
if ( jvmDll == NULL ) {
post("post: unable to find jvm.dll in %s", work);
return NULL;
}
func = GetProcAddress(jvmDll, "JNI_CreateJavaVM");
if ( func == NULL ) {
post("pdj: unable to find symbol: JNI_CreateJavaVM in jvm.dll ??");
return NULL;
}
post("pdj: using JVM %s", javahome);
return func;
}
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