1 /*
2 * Copyright (c) 2005, 2011, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 #include <stdio.h>
27 #include <stdlib.h>
28 #include <string.h>
29
30 #include <jni_util.h>
31
32 #include "j2secmod.h"
33
34 extern void throwNullPointerException(JNIEnv *env, const char *message);
35 extern void throwIOException(JNIEnv *env, const char *message);
36
findFunction(JNIEnv * env,jlong jHandle,const char * functionName)37 void *findFunction(JNIEnv *env, jlong jHandle, const char *functionName) {
38 HINSTANCE hModule = (HINSTANCE)jHandle;
39 void *fAddress = GetProcAddress(hModule, functionName);
40 if (fAddress == NULL) {
41 char errorMessage[256];
42 _snprintf(errorMessage, sizeof(errorMessage), "Symbol not found: %s", functionName);
43 throwNullPointerException(env, errorMessage);
44 return NULL;
45 }
46 return fAddress;
47 }
48
Java_sun_security_pkcs11_Secmod_nssGetLibraryHandle(JNIEnv * env,jclass thisClass,jstring jLibName)49 JNIEXPORT jlong JNICALL Java_sun_security_pkcs11_Secmod_nssGetLibraryHandle
50 (JNIEnv *env, jclass thisClass, jstring jLibName)
51 {
52 const char *libName = (*env)->GetStringUTFChars(env, jLibName, NULL);
53 HMODULE hModule = GetModuleHandle(libName);
54 dprintf2("-handle for %s: %d\n", libName, hModule);
55 (*env)->ReleaseStringUTFChars(env, jLibName, libName);
56 return (jlong)hModule;
57 }
58
Java_sun_security_pkcs11_Secmod_nssLoadLibrary(JNIEnv * env,jclass thisClass,jstring jName)59 JNIEXPORT jlong JNICALL Java_sun_security_pkcs11_Secmod_nssLoadLibrary
60 (JNIEnv *env, jclass thisClass, jstring jName)
61 {
62 HINSTANCE hModule;
63 LPVOID lpMsgBuf;
64
65 const char *libName = (*env)->GetStringUTFChars(env, jName, NULL);
66 dprintf1("-lib %s\n", libName);
67
68 hModule = LoadLibrary(libName);
69 (*env)->ReleaseStringUTFChars(env, jName, libName);
70
71 if (hModule == NULL) {
72 FormatMessage(
73 FORMAT_MESSAGE_ALLOCATE_BUFFER |
74 FORMAT_MESSAGE_FROM_SYSTEM |
75 FORMAT_MESSAGE_IGNORE_INSERTS,
76 NULL,
77 GetLastError(),
78 0, /* Default language */
79 (LPTSTR) &lpMsgBuf,
80 0,
81 NULL
82 );
83 dprintf1("-error: %s\n", lpMsgBuf);
84 throwIOException(env, (char*)lpMsgBuf);
85 LocalFree(lpMsgBuf);
86 return 0;
87 }
88 dprintf2("-handle: %d (0X%X)\n", hModule, hModule);
89 return (jlong)hModule;
90 }
91