/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 com.sun.jini.tool;
import java.io.File;
import java.io.FileNotFoundException;
import java.net.MalformedURLException;
import java.net.URL;
import java.text.MessageFormat;
import java.util.MissingResourceException;
import java.util.ResourceBundle;
import net.jini.url.httpmd.Handler;
import net.jini.url.httpmd.HttpmdUtil;
/**
* Computes the message digests for a codebase with HTTPMD URLs. This utility
* is run from the {@linkplain #main command line}. <p>
*
* An example command line usage is:
*
* <blockquote>
* <pre>
* java -jar <var><b>install_dir</b></var>/lib/computehttpmdcodebase.jar
* <var><b>install_dir</b></var>/lib-dl
* "httpmd://<var><b>your_host</b></var>:<var><b>http_port</b></var>/sdm-dl.jar;md5=0"
* </pre>
* </blockquote>
*
* where <var><b>install_dir</b></var> is the directory where the Apache River release
* is installed, <var><b>your_host</b></var> is the host where the HTTP server
* for the <code>sdm-dl.jar</code> JAR file will be running, and
* <var><b>http_port</b></var> is the port for that server. This command prints
* out the download codebase for use by a client that uses the {@link
* net.jini.lookup.ServiceDiscoveryManager}, using an HTTPMD URL to guarantee
* integrity for the classes in the <code>sdm-dl.jar</code> JAR file.
*
* @author Sun Microsystems, Inc.
* @since 2.0
*/
public class ComputeHttpmdCodebase {
private static ResourceBundle resources;
private static boolean resinit = false;
private ComputeHttpmdCodebase() { }
/**
* Computes the message digests for a codebase made up of HTTPMD URLs.
* The command line arguments are:
* <pre>
* <var><b>source-directory</b></var> <var><b>url</b></var>...
* </pre>
* The first argument is the filename or URL of the directory containing
* the source files for the HTTPMD URLs. The remaining arguments specify
* the HTTPMD URLs that make up the codebase. The digest values specified
* in the HTTPMD URLs will be ignored (zeroes are typically used). The
* path portion of each HTTPMD URL, without the message digest parameters,
* names a source file relative to the source directory; the message
* digest for that source file is computed and replaces the digest value
* in the HTTPMD URL. The resulting HTTPMD URLs are printed, separated by
* spaces.
* <p>
* Do not use a directory on a remote filesystem, or a directory URL, if
* the underlying network access protocol does not provide adequate data
* integrity or authentication of the remote host.
*/
public static void main(String[] args) {
if (args.length < 2) {
print("computecodebase.usage", (String) null);
System.exit(1);
}
Handler handler = new Handler();
StringBuffer codebase = new StringBuffer();
try {
boolean isURL;
URL base;
try {
base = new URL(args[0].endsWith("/") ?
args[0] : args[0] + "/");
isURL = true;
} catch (MalformedURLException e) {
File sourceDirectory = new File(args[0]);
if (!sourceDirectory.isDirectory()) {
print("computecodebase.notdir", args[0]);
System.exit(1);
}
base = sourceDirectory.toURI().toURL();
isURL = false;
}
for (int i = 1; i < args.length; i++) {
String spec = args[i];
if (!"httpmd:".regionMatches(true, 0, spec, 0, 7)) {
print("computecodebase.nonhttpmd", spec);
System.exit(1);
}
URL url;
try {
url = new URL(null, spec, handler);
} catch (MalformedURLException e) {
print("computecodebase.badurl",
new String[]{spec, e.getLocalizedMessage()});
System.exit(1);
return; // not reached, make compiler happy
}
String path = url.getPath();
int paramIndex = path.lastIndexOf(';');
int equalsIndex = path.indexOf('=', paramIndex);
int commentIndex = path.indexOf(',', equalsIndex);
String algorithm = path.substring(paramIndex + 1, equalsIndex);
URL source =
new URL(base,
path.substring(path.startsWith("/") ? 1 : 0,
path.indexOf(';')));
String digest;
try {
digest = HttpmdUtil.computeDigest(source, algorithm);
} catch (FileNotFoundException e) {
print("computecodebase.notfound",
isURL ? source.toExternalForm() : source.getPath());
System.exit(1);
return; // not reached, make compiler happy
}
URL result = new URL(
url,
path.substring(0, equalsIndex + 1) + digest +
(commentIndex < 0 ? "" : path.substring(commentIndex)) +
(url.getQuery() == null ? "" : '?' + url.getQuery()) +
(url.getRef() == null ? "" : '#' + url.getRef()));
if (codebase.length() > 0) {
codebase.append(' ');
}
codebase.append(result);
}
} catch (Throwable t) {
t.printStackTrace();
System.exit(1);
}
System.out.println(codebase);
}
private static synchronized String getString(String key) {
if (!resinit) {
try {
resources = ResourceBundle.getBundle(
"com.sun.jini.tool.resources.computecodebase");
resinit = true;
} catch (MissingResourceException e) {
e.printStackTrace();
}
}
try {
return resources.getString(key);
} catch (MissingResourceException e) {
return null;
}
}
private static void print(String key, String val) {
print(key, new String[]{val});
}
private static void print(String key, String[] vals) {
String fmt = getString(key);
if (fmt == null)
fmt = "no text found: \"" + key + "\" {0}";
System.err.println(MessageFormat.format(fmt, vals));
}
}