1 /* 2 * Copyright (c) 2000, 2013, 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 #ifdef __solaris__ 27 #define _POSIX_C_SOURCE 199506L 28 #endif 29 30 #include <jni.h> 31 #include "com_sun_security_auth_module_UnixSystem.h" 32 #include <stdio.h> 33 #include <pwd.h> 34 #include <sys/types.h> 35 #include <unistd.h> 36 #include <stdlib.h> 37 #include <string.h> 38 39 JNIEXPORT void JNICALL 40 Java_com_sun_security_auth_module_UnixSystem_getUnixInfo 41 (JNIEnv *env, jobject obj) { 42 43 int i; 44 char pwd_buf[1024]; 45 struct passwd *pwd; 46 struct passwd resbuf; 47 jfieldID userNameID; 48 jfieldID userID; 49 jfieldID groupID; 50 jfieldID supplementaryGroupID; 51 52 jstring jstr; 53 jlongArray jgroups; 54 jlong *jgroupsAsArray; 55 jsize numSuppGroups; 56 gid_t *groups; 57 jclass cls; 58 59 numSuppGroups = getgroups(0, NULL); 60 groups = (gid_t *)calloc(numSuppGroups, sizeof(gid_t)); 61 if (groups == NULL) { 62 jclass cls = (*env)->FindClass(env,"java/lang/OutOfMemoryError"); 63 if (cls != NULL) 64 (*env)->ThrowNew(env, cls, NULL); 65 return; 66 } 67 68 cls = (*env)->GetObjectClass(env, obj); 69 70 memset(pwd_buf, 0, sizeof(pwd_buf)); 71 72 if (getpwuid_r(getuid(), &resbuf, pwd_buf, sizeof(pwd_buf), &pwd) == 0 && 73 pwd != NULL && 74 getgroups(numSuppGroups, groups) != -1) { 75 76 userNameID = (*env)->GetFieldID(env, cls, "username", "Ljava/lang/String;"); 77 if (userNameID == 0) 78 goto cleanUpAndReturn; 79 80 userID = (*env)->GetFieldID(env, cls, "uid", "J"); 81 if (userID == 0) 82 goto cleanUpAndReturn; 83 84 groupID = (*env)->GetFieldID(env, cls, "gid", "J"); 85 if (groupID == 0) 86 goto cleanUpAndReturn; 87 88 supplementaryGroupID = (*env)->GetFieldID(env, cls, "groups", "[J"); 89 if (supplementaryGroupID == 0) 90 goto cleanUpAndReturn; 91 92 jstr = (*env)->NewStringUTF(env, pwd->pw_name); 93 if (jstr == NULL) 94 goto cleanUpAndReturn; 95 (*env)->SetObjectField(env, obj, userNameID, jstr); 96 97 (*env)->SetLongField(env, obj, userID, pwd->pw_uid); 98 99 (*env)->SetLongField(env, obj, groupID, pwd->pw_gid); 100 101 jgroups = (*env)->NewLongArray(env, numSuppGroups); 102 if (jgroups == NULL) 103 goto cleanUpAndReturn; 104 jgroupsAsArray = (*env)->GetLongArrayElements(env, jgroups, 0); 105 if (jgroupsAsArray == NULL) 106 goto cleanUpAndReturn; 107 for (i = 0; i < numSuppGroups; i++) 108 jgroupsAsArray[i] = groups[i]; 109 (*env)->ReleaseLongArrayElements(env, jgroups, jgroupsAsArray, 0); 110 (*env)->SetObjectField(env, obj, supplementaryGroupID, jgroups); 111 } 112 cleanUpAndReturn: 113 free(groups); 114 return; 115 }