| /* |
| * Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code 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 General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| #include <jni.h> |
| #include "jni_util.h" |
| #include "com_sun_security_auth_module_UnixSystem.h" |
| #include <stdio.h> |
| #include <sys/types.h> |
| #include <unistd.h> |
| #include <stdlib.h> |
| #include <string.h> |
| |
| /* For POSIX-compliant getpwuid_r on Solaris */ |
| #if defined(__solaris__) |
| #define _POSIX_PTHREAD_SEMANTICS |
| #endif |
| #include <pwd.h> |
| |
| /* |
| * Declare library specific JNI_Onload entry if static build |
| */ |
| DEF_STATIC_JNI_OnLoad |
| |
| JNIEXPORT void JNICALL |
| Java_com_sun_security_auth_module_UnixSystem_getUnixInfo |
| (JNIEnv *env, jobject obj) { |
| |
| int i; |
| char pwd_buf[1024]; |
| struct passwd *pwd; |
| struct passwd resbuf; |
| jfieldID userNameID; |
| jfieldID userID; |
| jfieldID groupID; |
| jfieldID supplementaryGroupID; |
| |
| jstring jstr; |
| jlongArray jgroups; |
| jlong *jgroupsAsArray; |
| jsize numSuppGroups; |
| gid_t *groups; |
| jclass cls; |
| |
| numSuppGroups = getgroups(0, NULL); |
| groups = (gid_t *)calloc(numSuppGroups, sizeof(gid_t)); |
| if (groups == NULL) { |
| jclass cls = (*env)->FindClass(env,"java/lang/OutOfMemoryError"); |
| if (cls != NULL) |
| (*env)->ThrowNew(env, cls, NULL); |
| return; |
| } |
| |
| cls = (*env)->GetObjectClass(env, obj); |
| |
| memset(pwd_buf, 0, sizeof(pwd_buf)); |
| |
| if (getpwuid_r(getuid(), &resbuf, pwd_buf, sizeof(pwd_buf), &pwd) == 0 && |
| pwd != NULL && |
| getgroups(numSuppGroups, groups) != -1) { |
| |
| userNameID = (*env)->GetFieldID(env, cls, "username", "Ljava/lang/String;"); |
| if (userNameID == 0) |
| goto cleanUpAndReturn; |
| |
| userID = (*env)->GetFieldID(env, cls, "uid", "J"); |
| if (userID == 0) |
| goto cleanUpAndReturn; |
| |
| groupID = (*env)->GetFieldID(env, cls, "gid", "J"); |
| if (groupID == 0) |
| goto cleanUpAndReturn; |
| |
| supplementaryGroupID = (*env)->GetFieldID(env, cls, "groups", "[J"); |
| if (supplementaryGroupID == 0) |
| goto cleanUpAndReturn; |
| |
| jstr = (*env)->NewStringUTF(env, pwd->pw_name); |
| if (jstr == NULL) |
| goto cleanUpAndReturn; |
| (*env)->SetObjectField(env, obj, userNameID, jstr); |
| |
| (*env)->SetLongField(env, obj, userID, pwd->pw_uid); |
| |
| (*env)->SetLongField(env, obj, groupID, pwd->pw_gid); |
| |
| jgroups = (*env)->NewLongArray(env, numSuppGroups); |
| if (jgroups == NULL) |
| goto cleanUpAndReturn; |
| jgroupsAsArray = (*env)->GetLongArrayElements(env, jgroups, 0); |
| if (jgroupsAsArray == NULL) |
| goto cleanUpAndReturn; |
| for (i = 0; i < numSuppGroups; i++) |
| jgroupsAsArray[i] = groups[i]; |
| (*env)->ReleaseLongArrayElements(env, jgroups, jgroupsAsArray, 0); |
| (*env)->SetObjectField(env, obj, supplementaryGroupID, jgroups); |
| } |
| cleanUpAndReturn: |
| free(groups); |
| return; |
| } |