1 /*
2 * Copyright (c) 2005, 2016, 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 <dlfcn.h>
31
32 #include <jni_util.h>
33
34 #include "j2secmod.h"
35 #include "pkcs11wrapper.h"
36
findFunction(JNIEnv * env,jlong jHandle,const char * functionName)37 void *findFunction(JNIEnv *env, jlong jHandle, const char *functionName) {
38 void *hModule = (void*)jlong_to_ptr(jHandle);
39 void *fAddress = dlsym(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 void *hModule;
53 const char *libName = (*env)->GetStringUTFChars(env, jLibName, NULL);
54 if (libName == NULL) {
55 return 0L;
56 }
57
58 // look up existing handle only, do not load
59 #if defined(AIX) || !defined(RTLD_NOLOAD)
60 hModule = dlopen(libName, RTLD_LAZY);
61 #else
62 hModule = dlopen(libName, RTLD_NOLOAD);
63 #endif
64 dprintf2("-handle for %s: %u\n", libName, hModule);
65 (*env)->ReleaseStringUTFChars(env, jLibName, libName);
66 return ptr_to_jlong(hModule);
67 }
68
Java_sun_security_pkcs11_Secmod_nssLoadLibrary(JNIEnv * env,jclass thisClass,jstring jLibName)69 JNIEXPORT jlong JNICALL Java_sun_security_pkcs11_Secmod_nssLoadLibrary
70 (JNIEnv *env, jclass thisClass, jstring jLibName)
71 {
72 void *hModule;
73 const char *libName = (*env)->GetStringUTFChars(env, jLibName, NULL);
74 if (libName == NULL) {
75 return 0L;
76 }
77
78 dprintf1("-lib %s\n", libName);
79 hModule = dlopen(libName, RTLD_LAZY);
80 (*env)->ReleaseStringUTFChars(env, jLibName, libName);
81 dprintf2("-handle: %u (0X%X)\n", hModule, hModule);
82
83 if (hModule == NULL) {
84 throwIOException(env, dlerror());
85 return 0;
86 }
87
88 return ptr_to_jlong(hModule);
89 }
90