/*
* Copyright 1999-2010 University of Chicago
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the License is
* distributed on an "AS IS" BASIS,WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
* express or implied.
*
* See the License for the specific language governing permissions and limitations under the License.
*/
package org.globus.util;
import java.io.IOException;
import java.io.File;
import java.io.BufferedReader;
import java.io.InputStreamReader;
public class ConfigUtil {
public static final int UNDEFINED_OS = -1;
public static final int WINDOWS_OS = 0;
public static final int UNIX_OS = 1;
public static final int MAC_OS = 2;
public static final int OTHER_OS = 3;
private static int osType = UNDEFINED_OS;
private static final String PROXY_NAME = "x509up_u";
private static final String SOLARIS_ID_EXEC =
"/usr/xpg4/bin/id";
public static String globus_dir = null;
static {
globus_dir = System.getProperty("user.home") +
File.separator +
".globus" +
File.separator;
}
/** Returns default PKCS11 library name */
public static String discoverPKCS11LibName() {
return "dspkcs"; // use the ibutton library as the default for now
}
/** Returns default location of user cert file */
public static String discoverUserCertLocation() {
String location = null;
location = globus_dir + "usercert.pem";
return location;
}
/** Returns default location of user key file */
public static String discoverUserKeyLocation() {
String location = null;
location = globus_dir + "userkey.pem";
return location;
}
/**
* Tries to discover user proxy location.
* If a UID system property is set, and running on a Unix machine it
* returns /tmp/x509up_u${UID}. If any other machine then Unix, it returns
* ${tempdir}/x509up_u${UID}, where tempdir is a platform-specific
* temporary directory as indicated by the java.io.tmpdir system property.
* If a UID system property is not set, the username will be used instead
* of the UID. That is, it returns ${tempdir}/x509up_u_${username}
*/
public static String discoverProxyLocation() {
String dir = null;
if (getOS() == UNIX_OS) {
dir = "/tmp/";
} else {
String tmpDir = System.getProperty("java.io.tmpdir");
dir = (tmpDir == null) ? globus_dir : tmpDir;
}
String uid = System.getProperty("UID");
if (uid != null) {
return getLocation(dir, PROXY_NAME + uid);
} else if (getOS() == UNIX_OS) {
try {
return getLocation(dir, PROXY_NAME + getUID());
} catch (IOException e) {
}
}
/* If all else fails use username */
String suffix = System.getProperty("user.name");
if (suffix != null) {
suffix = suffix.toLowerCase();
} else {
suffix = "nousername";
}
return getLocation(dir, PROXY_NAME + "_" + suffix);
}
private static String getLocation(String dir, String file) {
File f = new File(dir, file);
return f.getAbsolutePath();
}
/**
* Returns the user id. The user id is obtained by executing 'id -u'
* external program.
* <BR><BR><B>Note: </B><I>
* Under some circumstances, this function executes an external program;
* thus, its behavior is influenced by environment variables such as the
* caller's PATH and the environment variables that control dynamic
* loading. Care should be used if calling this function from a program
* that will be run as a Unix setuid program, or in any other manner in
* which the owner of the Unix process does not completely control its
* runtime environment.
* </I>
*
* @throws IOException if unable to determine the user id.
* @return the user id
*/
public static String getUID() throws IOException {
String exec = "id";
String osname = System.getProperty("os.name");
if (osname != null) {
osname = osname.toLowerCase();
if ((osname.indexOf("solaris") != -1) ||
(osname.indexOf("sunos") != -1)) {
if ((new File(SOLARIS_ID_EXEC).exists())) {
exec = SOLARIS_ID_EXEC;
}
} else if (osname.indexOf("windows") != -1) {
throw new IOException("Unable to determine the user id");
}
}
Runtime runTime = Runtime.getRuntime();
Process process = null;
BufferedReader buffInReader = null;
String s = null;
StringBuffer output = new StringBuffer();
int exitValue = -1;
try {
process = runTime.exec(exec + " -u");
buffInReader = new BufferedReader
( new InputStreamReader(process.getInputStream()) );
while ((s = buffInReader.readLine()) != null) {
output.append(s);
}
exitValue = process.waitFor();
} catch (Exception e) {
throw new IOException("Unable to execute 'id -u'");
} finally {
if (buffInReader != null) {
try {
buffInReader.close();
} catch (IOException e) {}
}
if (process != null) {
try {
process.getErrorStream().close();
} catch (IOException e) {}
try {
process.getOutputStream().close();
} catch (IOException e) {}
}
}
if (exitValue != 0) {
throw new IOException("Unable to perform 'id -u'");
}
return output.toString().trim();
}
/**
* Discovers location of CA certificates directory.
* First the ${user.home}/.globus/certificates directory is checked.
* If the directory does not exist, and on a Unix machine, the
* /etc/grid-security/certificates directory is checked next.
* If that directory does not exist and GLOBUS_LOCATION
* system property is set then the ${GLOBUS_LOCATION}/share/certificates
* directory is checked. Otherwise, null is returned.
* This indicates that the certificates directory could
* not be found.
*/
public static String discoverCertDirLocation() {
String location = null;
location = getDir(globus_dir + "certificates");
if (location != null) return location;
if (getOS() == UNIX_OS) {
location = getDir( "/etc/grid-security/certificates");
if (location != null) return location;
}
String suffix = File.separator + "share" + File.separator +
"certificates";
location = getDir(System.getProperty("GLOBUS_LOCATION") +
suffix);
if (location != null) return location;
return null;
}
public static int getOS() {
if (osType != UNDEFINED_OS) {
return osType;
}
String osname = System.getProperty("os.name");
if (osname != null) {
osname = osname.toLowerCase();
if (osname.indexOf("windows") != -1) {
osType = WINDOWS_OS;
} else if ( (osname.indexOf("solaris") != -1) ||
(osname.indexOf("sunos") != -1) ||
(osname.indexOf("linux") != -1) ||
(osname.indexOf("aix") != -1) ||
(osname.indexOf("hp-ux") != -1) ||
(osname.indexOf("compaq's digital unix") != -1) ||
(osname.indexOf("osf1") != -1) ||
(osname.indexOf("mac os x") != -1) ||
(osname.indexOf("netbsd") != -1) ||
(osname.indexOf("freebsd") != -1) ||
(osname.indexOf("irix") != -1) ) {
osType = UNIX_OS;
} else if (osname.indexOf("mac") != -1) {
osType = MAC_OS;
} else {
osType = OTHER_OS;
}
} else {
osType = OTHER_OS;
}
return osType;
}
private static String getDir(String directory) {
if (directory == null) return null;
File f = new File(directory);
if (f.isDirectory() && f.canRead()) {
return f.getAbsolutePath();
} else {
return null;
}
}
}