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 #include <jni.h>

    27 #include "com_sun_security_auth_module_SolarisSystem.h"

    28 #include <stdio.h>

    29 #include <pwd.h>

    30 #include <unistd.h>

    31 #include <stdlib.h>

    32 #include <string.h>

    33 #include <pwd.h>

    34 

    35 static void throwIllegalArgumentException(JNIEnv *env, const char *msg) {

    36     jclass clazz = (*env)->FindClass(env, "java/lang/IllegalArgumentException");

    37     if (clazz != NULL)

    38         (*env)->ThrowNew(env, clazz, msg);

    39 }

    40 

    41 JNIEXPORT void JNICALL

    42 Java_com_sun_security_auth_module_SolarisSystem_getSolarisInfo

    43                                                 (JNIEnv *env, jobject obj) {

    44 

    45     int i;

    46     char pwd_buf[1024];

    47     struct passwd pwd;

    48     jsize numSuppGroups = getgroups(0, NULL);

    49     jfieldID fid;

    50     jstring jstr;

    51     jlongArray jgroups;

    52     jlong *jgroupsAsArray;

    53     gid_t *groups;

    54     jclass cls;

    55 

    56     groups = (gid_t *)calloc(numSuppGroups, sizeof(gid_t));

    57 

    58     if (groups == NULL) {

    59         jclass cls = (*env)->FindClass(env,"java/lang/OutOfMemoryError");

    60         if (cls != NULL)

    61             (*env)->ThrowNew(env, cls, NULL);

    62         return;

    63     }

    64 

    65     cls = (*env)->GetObjectClass(env, obj);

    66 

    67     memset(pwd_buf, 0, sizeof(pwd_buf));

    68     if (getpwuid_r(getuid(), &pwd, pwd_buf, sizeof(pwd_buf)) != NULL &&

    69         getgroups(numSuppGroups, groups) != -1) {

    70 

    71         /*

    72          * set username

    73          */

    74         fid = (*env)->GetFieldID(env, cls, "username", "Ljava/lang/String;");

    75         if (fid == 0) {

    76             (*env)->ExceptionClear(env);

    77             throwIllegalArgumentException(env, "invalid field: username");

    78             goto cleanupAndReturn;

    79         }

    80         jstr = (*env)->NewStringUTF(env, pwd.pw_name);

    81         if (jstr == NULL) {

    82             goto cleanupAndReturn;

    83         }

    84         (*env)->SetObjectField(env, obj, fid, jstr);

    85 

    86         /*

    87          * set uid

    88          */

    89         fid = (*env)->GetFieldID(env, cls, "uid", "J");

    90         if (fid == 0) {

    91             (*env)->ExceptionClear(env);

    92             throwIllegalArgumentException(env, "invalid field: uid");

    93             goto cleanupAndReturn;

    94         }

    95         (*env)->SetLongField(env, obj, fid, pwd.pw_uid);

    96 

    97         /*

    98          * set gid

    99          */

   100         fid = (*env)->GetFieldID(env, cls, "gid", "J");

   101         if (fid == 0) {

   102             (*env)->ExceptionClear(env);

   103             throwIllegalArgumentException(env, "invalid field: gid");

   104             goto cleanupAndReturn;

   105         }

   106         (*env)->SetLongField(env, obj, fid, pwd.pw_gid);

   107 

   108         /*

   109          * set supplementary groups

   110          */

   111         fid = (*env)->GetFieldID(env, cls, "groups", "[J");

   112         if (fid == 0) {

   113             (*env)->ExceptionClear(env);

   114             throwIllegalArgumentException(env, "invalid field: groups");

   115             goto cleanupAndReturn;

   116         }

   117 

   118         jgroups = (*env)->NewLongArray(env, numSuppGroups);

   119         if (jgroups == NULL) {

   120             goto cleanupAndReturn;

   121         }

   122         jgroupsAsArray = (*env)->GetLongArrayElements(env, jgroups, 0);

   123         if (jgroupsAsArray == NULL) {

   124             goto cleanupAndReturn;

   125         }

   126         for (i = 0; i < numSuppGroups; i++)

   127             jgroupsAsArray[i] = groups[i];

   128         (*env)->ReleaseLongArrayElements(env, jgroups, jgroupsAsArray, 0);

   129         (*env)->SetObjectField(env, obj, fid, jgroups);

   130     }

   131 cleanupAndReturn:

   132     free(groups);

   133 

   134     return;

   135 }