/*
 * Copyright (c) 1996, 2018, 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.
 */

package sun.tools.jar;

import java.io.*;
import java.lang.module.Configuration;
import java.lang.module.FindException;
import java.lang.module.InvalidModuleDescriptorException;
import java.lang.module.ModuleDescriptor;
import java.lang.module.ModuleDescriptor.Exports;
import java.lang.module.ModuleDescriptor.Opens;
import java.lang.module.ModuleDescriptor.Provides;
import java.lang.module.ModuleDescriptor.Version;
import java.lang.module.ModuleFinder;
import java.lang.module.ModuleReader;
import java.lang.module.ModuleReference;
import java.lang.module.ResolvedModule;
import java.net.URI;
import java.nio.ByteBuffer;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.StandardCopyOption;
import java.text.MessageFormat;
import java.util.*;
import java.util.function.Consumer;
import java.util.jar.Attributes;
import java.util.jar.JarFile;
import java.util.jar.JarOutputStream;
import java.util.jar.Manifest;
import java.util.regex.Pattern;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import java.util.zip.CRC32;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import java.util.zip.ZipInputStream;
import java.util.zip.ZipOutputStream;
import jdk.internal.module.Checks;
import jdk.internal.module.ModuleHashes;
import jdk.internal.module.ModuleHashesBuilder;
import jdk.internal.module.ModuleInfo;
import jdk.internal.module.ModuleInfoExtender;
import jdk.internal.module.ModuleResolution;
import jdk.internal.module.ModuleTarget;
import jdk.internal.util.jar.JarIndex;

import static java.nio.file.StandardCopyOption.REPLACE_EXISTING;
import static java.util.jar.JarFile.MANIFEST_NAME;
import static java.util.stream.Collectors.joining;
import static jdk.internal.util.jar.JarIndex.INDEX_NAME;

This class implements a simple utility for creating files in the JAR (Java Archive) file format. The JAR format is based on the ZIP file format, with optional meta-information stored in a MANIFEST entry.
/** * This class implements a simple utility for creating files in the JAR * (Java Archive) file format. The JAR format is based on the ZIP file * format, with optional meta-information stored in a MANIFEST entry. */
public class Main { String program; PrintWriter out, err; String fname, mname, ename; String zname = ""; String rootjar = null; private static final int BASE_VERSION = 0; private static class Entry { final String name; final File file; final boolean isDir; Entry(File file, String name, boolean isDir) { this.file = file; this.isDir = isDir; this.name = name; } @Override public boolean equals(Object o) { if (this == o) return true; if (!(o instanceof Entry)) return false; return this.file.equals(((Entry)o).file); } @Override public int hashCode() { return file.hashCode(); } } // An entryName(path)->Entry map generated during "expand", it helps to // decide whether or not an existing entry in a jar file needs to be // replaced, during the "update" operation. Map<String, Entry> entryMap = new HashMap<>(); // All entries need to be added/updated. Set<Entry> entries = new LinkedHashSet<>(); // module-info.class entries need to be added/updated. Map<String,byte[]> moduleInfos = new HashMap<>(); // A paths Set for each version, where each Set contains directories // specified by the "-C" operation. Map<Integer,Set<String>> pathsMap = new HashMap<>(); // There's also a files array per version Map<Integer,String[]> filesMap = new HashMap<>(); // Do we think this is a multi-release jar? Set to true // if --release option found followed by at least file boolean isMultiRelease; // The last parsed --release value, if any. Used in conjunction with // "-d,--describe-module" to select the operative module descriptor. int releaseValue = -1; /* * cflag: create * uflag: update * xflag: xtract * tflag: table * vflag: verbose * flag0: no zip compression (store only) * Mflag: DO NOT generate a manifest file (just ZIP) * iflag: generate jar index * nflag: Perform jar normalization at the end * pflag: preserve/don't strip leading slash and .. component from file name * dflag: print module descriptor */ boolean cflag, uflag, xflag, tflag, vflag, flag0, Mflag, iflag, pflag, dflag; boolean suppressDeprecateMsg = false; /* To support additional GNU Style informational options */ Consumer<PrintWriter> info; /* Modular jar related options */ Version moduleVersion; Pattern modulesToHash; ModuleResolution moduleResolution = ModuleResolution.empty(); ModuleFinder moduleFinder = ModuleFinder.of(); static final String MODULE_INFO = "module-info.class"; static final String MANIFEST_DIR = "META-INF/"; static final String VERSIONS_DIR = MANIFEST_DIR + "versions/"; static final String VERSION = "1.0"; static final int VERSIONS_DIR_LENGTH = VERSIONS_DIR.length(); private static ResourceBundle rsrc;
If true, maintain compatibility with JDK releases prior to 6.0 by timestamping extracted files with the time at which they are extracted. Default is to use the time given in the archive.
/** * If true, maintain compatibility with JDK releases prior to 6.0 by * timestamping extracted files with the time at which they are extracted. * Default is to use the time given in the archive. */
private static final boolean useExtractionTime = Boolean.getBoolean("sun.tools.jar.useExtractionTime");
Initialize ResourceBundle
/** * Initialize ResourceBundle */
static { try { rsrc = ResourceBundle.getBundle("sun.tools.jar.resources.jar"); } catch (MissingResourceException e) { throw new Error("Fatal: Resource for jar is missing"); } } static String getMsg(String key) { try { return (rsrc.getString(key)); } catch (MissingResourceException e) { throw new Error("Error in message file"); } } static String formatMsg(String key, String arg) { String msg = getMsg(key); String[] args = new String[1]; args[0] = arg; return MessageFormat.format(msg, (Object[]) args); } static String formatMsg2(String key, String arg, String arg1) { String msg = getMsg(key); String[] args = new String[2]; args[0] = arg; args[1] = arg1; return MessageFormat.format(msg, (Object[]) args); } public Main(PrintStream out, PrintStream err, String program) { this.out = new PrintWriter(out, true); this.err = new PrintWriter(err, true); this.program = program; } public Main(PrintWriter out, PrintWriter err, String program) { this.out = out; this.err = err; this.program = program; }
Creates a new empty temporary file in the same directory as the specified file. A variant of File.createTempFile.
/** * Creates a new empty temporary file in the same directory as the * specified file. A variant of File.createTempFile. */
private static File createTempFileInSameDirectoryAs(File file) throws IOException { File dir = file.getParentFile(); if (dir == null) dir = new File("."); return File.createTempFile("jartmp", null, dir); } private boolean ok;
Starts main program with the specified arguments.
/** * Starts main program with the specified arguments. */
@SuppressWarnings({"removal"}) public synchronized boolean run(String args[]) { ok = true; if (!parseArgs(args)) { return false; } File tmpFile = null; try { if (cflag || uflag) { if (fname != null) { // The name of the zip file as it would appear as its own // zip file entry. We use this to make sure that we don't // add the zip file to itself. zname = fname.replace(File.separatorChar, '/'); if (zname.startsWith("./")) { zname = zname.substring(2); } } } if (cflag) { Manifest manifest = null; if (!Mflag) { if (mname != null) { try (InputStream in = new FileInputStream(mname)) { manifest = new Manifest(new BufferedInputStream(in)); } } else { manifest = new Manifest(); } addVersion(manifest); addCreatedBy(manifest); if (isAmbiguousMainClass(manifest)) { return false; } if (ename != null) { addMainClass(manifest, ename); } if (isMultiRelease) { addMultiRelease(manifest); } } expand(); if (!moduleInfos.isEmpty()) { // All actual file entries (excl manifest and module-info.class) Set<String> jentries = new HashSet<>(); // all packages if it's a class or resource Set<String> packages = new HashSet<>(); entries.stream() .filter(e -> !e.isDir) .forEach( e -> { addPackageIfNamed(packages, e.name); jentries.add(e.name); }); addExtendedModuleAttributes(moduleInfos, packages); // Basic consistency checks for modular jars. if (!checkModuleInfo(moduleInfos.get(MODULE_INFO), jentries)) return false; } else if (moduleVersion != null || modulesToHash != null) { error(getMsg("error.module.options.without.info")); return false; } if (vflag && fname == null) { // Disable verbose output so that it does not appear // on stdout along with file data // error("Warning: -v option ignored"); vflag = false; } final String tmpbase = (fname == null) ? "tmpjar" : fname.substring(fname.indexOf(File.separatorChar) + 1); tmpFile = createTemporaryFile(tmpbase, ".jar"); try (OutputStream out = new FileOutputStream(tmpFile)) { create(new BufferedOutputStream(out, 4096), manifest); } validateAndClose(tmpFile); } else if (uflag) { File inputFile = null; if (fname != null) { inputFile = new File(fname); tmpFile = createTempFileInSameDirectoryAs(inputFile); } else { vflag = false; tmpFile = createTemporaryFile("tmpjar", ".jar"); } expand(); try (FileInputStream in = (fname != null) ? new FileInputStream(inputFile) : new FileInputStream(FileDescriptor.in); FileOutputStream out = new FileOutputStream(tmpFile); InputStream manifest = (!Mflag && (mname != null)) ? (new FileInputStream(mname)) : null; ) { boolean updateOk = update(in, new BufferedOutputStream(out), manifest, moduleInfos, null); if (ok) { ok = updateOk; } } validateAndClose(tmpFile); } else if (tflag) { replaceFSC(filesMap); // For the "list table contents" action, access using the // ZipFile class is always most efficient since only a // "one-finger" scan through the central directory is required. String[] files = filesMapToFiles(filesMap); if (fname != null) { list(fname, files); } else { InputStream in = new FileInputStream(FileDescriptor.in); try { list(new BufferedInputStream(in), files); } finally { in.close(); } } } else if (xflag) { replaceFSC(filesMap); // For the extract action, when extracting all the entries, // access using the ZipInputStream class is most efficient, // since only a single sequential scan through the zip file is // required. When using the ZipFile class, a "two-finger" scan // is required, but this is likely to be more efficient when a // partial extract is requested. In case the zip file has // "leading garbage", we fall back from the ZipInputStream // implementation to the ZipFile implementation, since only the // latter can handle it. String[] files = filesMapToFiles(filesMap); if (fname != null && files != null) { extract(fname, files); } else { InputStream in = (fname == null) ? new FileInputStream(FileDescriptor.in) : new FileInputStream(fname); try { if (!extract(new BufferedInputStream(in), files) && fname != null) { extract(fname, files); } } finally { in.close(); } } } else if (iflag) { String[] files = filesMap.get(BASE_VERSION); // base entries only, can be null genIndex(rootjar, files); } else if (dflag) { boolean found; if (fname != null) { try (ZipFile zf = new ZipFile(fname)) { found = describeModule(zf); } } else { try (FileInputStream fin = new FileInputStream(FileDescriptor.in)) { found = describeModuleFromStream(fin); } } if (!found) error(getMsg("error.module.descriptor.not.found")); } } catch (IOException e) { fatalError(e); ok = false; } catch (Error ee) { ee.printStackTrace(); ok = false; } catch (Throwable t) { t.printStackTrace(); ok = false; } finally { if (tmpFile != null && tmpFile.exists()) tmpFile.delete(); } out.flush(); err.flush(); return ok; } private void validateAndClose(File tmpfile) throws IOException { if (ok && isMultiRelease) { try (ZipFile zf = new ZipFile(tmpfile)) { ok = Validator.validate(this, zf); if (!ok) { error(formatMsg("error.validator.jarfile.invalid", fname)); } } catch (IOException e) { error(formatMsg2("error.validator.jarfile.exception", fname, e.getMessage())); } } Path path = tmpfile.toPath(); try { if (ok) { if (fname != null) { Files.move(path, Paths.get(fname), StandardCopyOption.REPLACE_EXISTING); } else { Files.copy(path, new FileOutputStream(FileDescriptor.out)); } } } finally { Files.deleteIfExists(path); } } private String[] filesMapToFiles(Map<Integer,String[]> filesMap) { if (filesMap.isEmpty()) return null; return filesMap.entrySet() .stream() .flatMap(this::filesToEntryNames) .toArray(String[]::new); } Stream<String> filesToEntryNames(Map.Entry<Integer,String[]> fileEntries) { int version = fileEntries.getKey(); Set<String> cpaths = pathsMap.get(version); return Stream.of(fileEntries.getValue()) .map(f -> toVersionedName(toEntryName(f, cpaths, false), version)); }
Parses command line arguments.
/** * Parses command line arguments. */
boolean parseArgs(String args[]) { /* Preprocess and expand @file arguments */ try { args = CommandLine.parse(args); } catch (FileNotFoundException e) { fatalError(formatMsg("error.cant.open", e.getMessage())); return false; } catch (IOException e) { fatalError(e); return false; } /* parse flags */ int count = 1; try { String flags = args[0]; // Note: flags.length == 2 can be treated as the short version of // the GNU option since the there cannot be any other options, // excluding -C, as per the old way. if (flags.startsWith("--") || (flags.startsWith("-") && flags.length() == 2)) { try { count = GNUStyleOptions.parseOptions(this, args); } catch (GNUStyleOptions.BadArgs x) { if (info == null) { if (x.showUsage) { usageError(x.getMessage()); } else { error(x.getMessage()); } return false; } } if (info != null) { info.accept(out); return true; } } else { // Legacy/compatibility options if (flags.startsWith("-")) { flags = flags.substring(1); } for (int i = 0; i < flags.length(); i++) { switch (flags.charAt(i)) { case 'c': if (xflag || tflag || uflag || iflag) { usageError(getMsg("error.multiple.main.operations")); return false; } cflag = true; break; case 'u': if (cflag || xflag || tflag || iflag) { usageError(getMsg("error.multiple.main.operations")); return false; } uflag = true; break; case 'x': if (cflag || uflag || tflag || iflag) { usageError(getMsg("error.multiple.main.operations")); return false; } xflag = true; break; case 't': if (cflag || uflag || xflag || iflag) { usageError(getMsg("error.multiple.main.operations")); return false; } tflag = true; break; case 'M': Mflag = true; break; case 'v': vflag = true; break; case 'f': fname = args[count++]; break; case 'm': mname = args[count++]; break; case '0': flag0 = true; break; case 'i': if (cflag || uflag || xflag || tflag) { usageError(getMsg("error.multiple.main.operations")); return false; } // do not increase the counter, files will contain rootjar rootjar = args[count++]; iflag = true; break; case 'e': ename = args[count++]; break; case 'P': pflag = true; break; default: usageError(formatMsg("error.illegal.option", String.valueOf(flags.charAt(i)))); return false; } } } } catch (ArrayIndexOutOfBoundsException e) { usageError(getMsg("main.usage.summary")); return false; } if (!cflag && !tflag && !xflag && !uflag && !iflag && !dflag) { usageError(getMsg("error.bad.option")); return false; } /* parse file arguments */ int n = args.length - count; if (n > 0) { int version = BASE_VERSION; int k = 0; String[] nameBuf = new String[n]; pathsMap.put(version, new HashSet<>()); try { for (int i = count; i < args.length; i++) { if (args[i].equals("-C")) { if (dflag) { // "--describe-module/-d" does not require file argument(s), // but does accept --release usageError(getMsg("error.bad.dflag")); return false; } /* change the directory */ String dir = args[++i]; dir = (dir.endsWith(File.separator) ? dir : (dir + File.separator)); dir = dir.replace(File.separatorChar, '/'); boolean hasUNC = (File.separatorChar == '\\'&& dir.startsWith("//")); while (dir.indexOf("//") > -1) { dir = dir.replace("//", "/"); } if (hasUNC) { // Restore Windows UNC path. dir = "/" + dir; } pathsMap.get(version).add(dir); nameBuf[k++] = dir + args[++i]; } else if (args[i].startsWith("--release")) { int v = BASE_VERSION; try { v = Integer.valueOf(args[++i]); } catch (NumberFormatException x) { error(formatMsg("error.release.value.notnumber", args[i])); // this will fall into the next error, thus returning false } if (v < 9) { usageError(formatMsg("error.release.value.toosmall", String.valueOf(v))); return false; } // associate the files, if any, with the previous version number if (k > 0) { String[] files = new String[k]; System.arraycopy(nameBuf, 0, files, 0, k); filesMap.put(version, files); isMultiRelease = version > BASE_VERSION; } // reset the counters and start with the new version number k = 0; nameBuf = new String[n]; version = v; releaseValue = version; pathsMap.put(version, new HashSet<>()); } else { if (dflag) { // "--describe-module/-d" does not require file argument(s), // but does accept --release usageError(getMsg("error.bad.dflag")); return false; } nameBuf[k++] = args[i]; } } } catch (ArrayIndexOutOfBoundsException e) { usageError(getMsg("error.bad.file.arg")); return false; } // associate remaining files, if any, with a version if (k > 0) { String[] files = new String[k]; System.arraycopy(nameBuf, 0, files, 0, k); filesMap.put(version, files); isMultiRelease = version > BASE_VERSION; } } else if (cflag && (mname == null)) { usageError(getMsg("error.bad.cflag")); return false; } else if (uflag) { if ((mname != null) || (ename != null) || moduleVersion != null) { /* just want to update the manifest */ return true; } else { usageError(getMsg("error.bad.uflag")); return false; } } return true; } /* * Add the package of the given resource name if it's a .class * or a resource in a named package. */ void addPackageIfNamed(Set<String> packages, String name) { if (name.startsWith(VERSIONS_DIR)) { // trim the version dir prefix int i0 = VERSIONS_DIR_LENGTH; int i = name.indexOf('/', i0); if (i <= 0) { warn(formatMsg("warn.release.unexpected.versioned.entry", name)); return; } while (i0 < i) { char c = name.charAt(i0); if (c < '0' || c > '9') { warn(formatMsg("warn.release.unexpected.versioned.entry", name)); return; } i0++; } name = name.substring(i + 1, name.length()); } String pn = toPackageName(name); // add if this is a class or resource in a package if (Checks.isPackageName(pn)) { packages.add(pn); } } private String toEntryName(String name, Set<String> cpaths, boolean isDir) { name = name.replace(File.separatorChar, '/'); if (isDir) { name = name.endsWith("/") ? name : name + "/"; } String matchPath = ""; for (String path : cpaths) { if (name.startsWith(path) && path.length() > matchPath.length()) { matchPath = path; } } name = safeName(name.substring(matchPath.length())); // the old implementaton doesn't remove // "./" if it was led by "/" (?) if (name.startsWith("./")) { name = name.substring(2); } return name; } private static String toVersionedName(String name, int version) { return version > BASE_VERSION ? VERSIONS_DIR + version + "/" + name : name; } private static String toPackageName(String path) { int index = path.lastIndexOf('/'); if (index != -1) { return path.substring(0, index).replace('/', '.'); } else { return ""; } } private void expand() throws IOException { for (int version : filesMap.keySet()) { String[] files = filesMap.get(version); expand(null, files, pathsMap.get(version), version); } }
Expands list of files to process into full list of all files that can be found by recursively descending directories.
Params:
  • dir – parent directory
  • files – list of files to expand
  • cpaths – set of directories specified by -C option for the files
Throws:
/** * Expands list of files to process into full list of all files that * can be found by recursively descending directories. * * @param dir parent directory * @param files list of files to expand * @param cpaths set of directories specified by -C option for the files * @throws IOException if an I/O error occurs */
private void expand(File dir, String[] files, Set<String> cpaths, int version) throws IOException { if (files == null) return; for (int i = 0; i < files.length; i++) { File f; if (dir == null) f = new File(files[i]); else f = new File(dir, files[i]); boolean isDir = f.isDirectory(); String name = toEntryName(f.getPath(), cpaths, isDir); if (version != BASE_VERSION) { if (name.startsWith(VERSIONS_DIR)) { // the entry starts with VERSIONS_DIR and version != BASE_VERSION, // which means the "[dirs|files]" in --release v [dirs|files] // includes VERSIONS_DIR-ed entries --> warning and skip (?) error(formatMsg2("error.release.unexpected.versioned.entry", name, String.valueOf(version))); ok = false; return; } name = toVersionedName(name, version); } if (f.isFile()) { Entry e = new Entry(f, name, false); if (isModuleInfoEntry(name)) { moduleInfos.putIfAbsent(name, Files.readAllBytes(f.toPath())); if (uflag) entryMap.put(name, e); } else if (entries.add(e)) { if (uflag) entryMap.put(name, e); } } else if (isDir) { Entry e = new Entry(f, name, true); if (entries.add(e)) { // utilize entryMap for the duplicate dir check even in // case of cflag == true. // dir name confilict/duplicate could happen with -C option. // just remove the last "e" from the "entries" (zos will fail // with "duplicated" entries), but continue expanding the // sub tree if (entryMap.containsKey(name)) { entries.remove(e); } else { entryMap.put(name, e); } expand(f, f.list(), cpaths, version); } } else { error(formatMsg("error.nosuch.fileordir", String.valueOf(f))); ok = false; } } }
Creates a new JAR file.
/** * Creates a new JAR file. */
void create(OutputStream out, Manifest manifest) throws IOException { try (ZipOutputStream zos = new JarOutputStream(out)) { if (flag0) { zos.setMethod(ZipOutputStream.STORED); } // TODO: check module-info attributes against manifest ?? if (manifest != null) { if (vflag) { output(getMsg("out.added.manifest")); } ZipEntry e = new ZipEntry(MANIFEST_DIR); e.setTime(System.currentTimeMillis()); e.setSize(0); e.setCrc(0); zos.putNextEntry(e); e = new ZipEntry(MANIFEST_NAME); e.setTime(System.currentTimeMillis()); if (flag0) { crc32Manifest(e, manifest); } zos.putNextEntry(e); manifest.write(zos); zos.closeEntry(); } updateModuleInfo(moduleInfos, zos); for (Entry entry : entries) { addFile(zos, entry); } } } private char toUpperCaseASCII(char c) { return (c < 'a' || c > 'z') ? c : (char) (c + 'A' - 'a'); }
Compares two strings for equality, ignoring case. The second argument must contain only upper-case ASCII characters. We don't want case comparison to be locale-dependent (else we have the notorious "turkish i bug").
/** * Compares two strings for equality, ignoring case. The second * argument must contain only upper-case ASCII characters. * We don't want case comparison to be locale-dependent (else we * have the notorious "turkish i bug"). */
private boolean equalsIgnoreCase(String s, String upper) { assert upper.toUpperCase(java.util.Locale.ENGLISH).equals(upper); int len; if ((len = s.length()) != upper.length()) return false; for (int i = 0; i < len; i++) { char c1 = s.charAt(i); char c2 = upper.charAt(i); if (c1 != c2 && toUpperCaseASCII(c1) != c2) return false; } return true; }
Updates an existing jar file.
/** * Updates an existing jar file. */
boolean update(InputStream in, OutputStream out, InputStream newManifest, Map<String,byte[]> moduleInfos, JarIndex jarIndex) throws IOException { ZipInputStream zis = new ZipInputStream(in); ZipOutputStream zos = new JarOutputStream(out); ZipEntry e = null; boolean foundManifest = false; boolean updateOk = true; // All actual entries added/updated/existing, in the jar file (excl manifest // and module-info.class ). Set<String> jentries = new HashSet<>(); if (jarIndex != null) { addIndex(jarIndex, zos); } // put the old entries first, replace if necessary while ((e = zis.getNextEntry()) != null) { String name = e.getName(); boolean isManifestEntry = equalsIgnoreCase(name, MANIFEST_NAME); boolean isModuleInfoEntry = isModuleInfoEntry(name); if ((jarIndex != null && equalsIgnoreCase(name, INDEX_NAME)) || (Mflag && isManifestEntry)) { continue; } else if (isManifestEntry && ((newManifest != null) || (ename != null) || isMultiRelease)) { foundManifest = true; if (newManifest != null) { // Don't read from the newManifest InputStream, as we // might need it below, and we can't re-read the same data // twice. try (FileInputStream fis = new FileInputStream(mname)) { if (isAmbiguousMainClass(new Manifest(fis))) { return false; } } } // Update the manifest. Manifest old = new Manifest(zis); if (newManifest != null) { old.read(newManifest); } if (!updateManifest(old, zos)) { return false; } } else if (moduleInfos != null && isModuleInfoEntry) { moduleInfos.putIfAbsent(name, zis.readAllBytes()); } else { boolean isDir = e.isDirectory(); if (!entryMap.containsKey(name)) { // copy the old stuff // do our own compression ZipEntry e2 = new ZipEntry(name); e2.setMethod(e.getMethod()); e2.setTime(e.getTime()); e2.setComment(e.getComment()); e2.setExtra(e.getExtra()); if (e.getMethod() == ZipEntry.STORED) { e2.setSize(e.getSize()); e2.setCrc(e.getCrc()); } zos.putNextEntry(e2); copy(zis, zos); } else { // replace with the new files Entry ent = entryMap.get(name); addFile(zos, ent); entryMap.remove(name); entries.remove(ent); isDir = ent.isDir; } if (!isDir) { jentries.add(name); } } } // add the remaining new files for (Entry entry : entries) { addFile(zos, entry); if (!entry.isDir) { jentries.add(entry.name); } } if (!foundManifest) { if (newManifest != null) { Manifest m = new Manifest(newManifest); updateOk = !isAmbiguousMainClass(m); if (updateOk) { if (!updateManifest(m, zos)) { updateOk = false; } } } else if (ename != null) { if (!updateManifest(new Manifest(), zos)) { updateOk = false; } } } if (updateOk) { if (moduleInfos != null && !moduleInfos.isEmpty()) { Set<String> pkgs = new HashSet<>(); jentries.forEach( je -> addPackageIfNamed(pkgs, je)); addExtendedModuleAttributes(moduleInfos, pkgs); updateOk = checkModuleInfo(moduleInfos.get(MODULE_INFO), jentries); updateModuleInfo(moduleInfos, zos); // TODO: check manifest main classes, etc } else if (moduleVersion != null || modulesToHash != null) { error(getMsg("error.module.options.without.info")); updateOk = false; } } zis.close(); zos.close(); return updateOk; } private void addIndex(JarIndex index, ZipOutputStream zos) throws IOException { ZipEntry e = new ZipEntry(INDEX_NAME); e.setTime(System.currentTimeMillis()); if (flag0) { CRC32OutputStream os = new CRC32OutputStream(); index.write(os); os.updateEntry(e); } zos.putNextEntry(e); index.write(zos); zos.closeEntry(); } private void updateModuleInfo(Map<String,byte[]> moduleInfos, ZipOutputStream zos) throws IOException { String fmt = uflag ? "out.update.module-info": "out.added.module-info"; for (Map.Entry<String,byte[]> mi : moduleInfos.entrySet()) { String name = mi.getKey(); byte[] bytes = mi.getValue(); ZipEntry e = new ZipEntry(name); e.setTime(System.currentTimeMillis()); if (flag0) { crc32ModuleInfo(e, bytes); } zos.putNextEntry(e); zos.write(bytes); zos.closeEntry(); if (vflag) { output(formatMsg(fmt, name)); } } } private boolean updateManifest(Manifest m, ZipOutputStream zos) throws IOException { addVersion(m); addCreatedBy(m); if (ename != null) { addMainClass(m, ename); } if (isMultiRelease) { addMultiRelease(m); } ZipEntry e = new ZipEntry(MANIFEST_NAME); e.setTime(System.currentTimeMillis()); if (flag0) { crc32Manifest(e, m); } zos.putNextEntry(e); m.write(zos); if (vflag) { output(getMsg("out.update.manifest")); } return true; } private static final boolean isWinDriveLetter(char c) { return ((c >= 'a') && (c <= 'z')) || ((c >= 'A') && (c <= 'Z')); } private String safeName(String name) { if (!pflag) { int len = name.length(); int i = name.lastIndexOf("../"); if (i == -1) { i = 0; } else { i += 3; // strip any dot-dot components } if (File.separatorChar == '\\') { // the spec requests no drive letter. skip if // the entry name has one. while (i < len) { int off = i; if (i + 1 < len && name.charAt(i + 1) == ':' && isWinDriveLetter(name.charAt(i))) { i += 2; } while (i < len && name.charAt(i) == '/') { i++; } if (i == off) { break; } } } else { while (i < len && name.charAt(i) == '/') { i++; } } if (i != 0) { name = name.substring(i); } } return name; } private void addVersion(Manifest m) { Attributes global = m.getMainAttributes(); if (global.getValue(Attributes.Name.MANIFEST_VERSION) == null) { global.put(Attributes.Name.MANIFEST_VERSION, VERSION); } } private void addCreatedBy(Manifest m) { Attributes global = m.getMainAttributes(); if (global.getValue(new Attributes.Name("Created-By")) == null) { String javaVendor = System.getProperty("java.vendor"); String jdkVersion = System.getProperty("java.version"); global.put(new Attributes.Name("Created-By"), jdkVersion + " (" + javaVendor + ")"); } } private void addMainClass(Manifest m, String mainApp) { Attributes global = m.getMainAttributes(); // overrides any existing Main-Class attribute global.put(Attributes.Name.MAIN_CLASS, mainApp); } private void addMultiRelease(Manifest m) { Attributes global = m.getMainAttributes(); global.put(Attributes.Name.MULTI_RELEASE, "true"); } private boolean isAmbiguousMainClass(Manifest m) { if (ename != null) { Attributes global = m.getMainAttributes(); if ((global.get(Attributes.Name.MAIN_CLASS) != null)) { usageError(getMsg("error.bad.eflag")); return true; } } return false; }
Adds a new file entry to the ZIP output stream.
/** * Adds a new file entry to the ZIP output stream. */
void addFile(ZipOutputStream zos, Entry entry) throws IOException { File file = entry.file; String name = entry.name; boolean isDir = entry.isDir; if (name.isEmpty() || name.equals(".") || name.equals(zname)) { return; } else if ((name.equals(MANIFEST_DIR) || name.equals(MANIFEST_NAME)) && !Mflag) { if (vflag) { output(formatMsg("out.ignore.entry", name)); } return; } else if (name.equals(MODULE_INFO)) { throw new Error("Unexpected module info: " + name); } long size = isDir ? 0 : file.length(); if (vflag) { out.print(formatMsg("out.adding", name)); } ZipEntry e = new ZipEntry(name); e.setTime(file.lastModified()); if (size == 0) { e.setMethod(ZipEntry.STORED); e.setSize(0); e.setCrc(0); } else if (flag0) { crc32File(e, file); } zos.putNextEntry(e); if (!isDir) { copy(file, zos); } zos.closeEntry(); /* report how much compression occurred. */ if (vflag) { size = e.getSize(); long csize = e.getCompressedSize(); out.print(formatMsg2("out.size", String.valueOf(size), String.valueOf(csize))); if (e.getMethod() == ZipEntry.DEFLATED) { long ratio = 0; if (size != 0) { ratio = ((size - csize) * 100) / size; } output(formatMsg("out.deflated", String.valueOf(ratio))); } else { output(getMsg("out.stored")); } } }
A buffer for use only by copy(InputStream, OutputStream). Not as clean as allocating a new buffer as needed by copy, but significantly more efficient.
/** * A buffer for use only by copy(InputStream, OutputStream). * Not as clean as allocating a new buffer as needed by copy, * but significantly more efficient. */
private byte[] copyBuf = new byte[8192];
Copies all bytes from the input stream to the output stream. Does not close or flush either stream.
Params:
  • from – the input stream to read from
  • to – the output stream to write to
Throws:
/** * Copies all bytes from the input stream to the output stream. * Does not close or flush either stream. * * @param from the input stream to read from * @param to the output stream to write to * @throws IOException if an I/O error occurs */
private void copy(InputStream from, OutputStream to) throws IOException { int n; while ((n = from.read(copyBuf)) != -1) to.write(copyBuf, 0, n); }
Copies all bytes from the input file to the output stream. Does not close or flush the output stream.
Params:
  • from – the input file to read from
  • to – the output stream to write to
Throws:
/** * Copies all bytes from the input file to the output stream. * Does not close or flush the output stream. * * @param from the input file to read from * @param to the output stream to write to * @throws IOException if an I/O error occurs */
private void copy(File from, OutputStream to) throws IOException { try (InputStream in = new FileInputStream(from)) { copy(in, to); } }
Copies all bytes from the input stream to the output file. Does not close the input stream.
Params:
  • from – the input stream to read from
  • to – the output file to write to
Throws:
/** * Copies all bytes from the input stream to the output file. * Does not close the input stream. * * @param from the input stream to read from * @param to the output file to write to * @throws IOException if an I/O error occurs */
private void copy(InputStream from, File to) throws IOException { try (OutputStream out = new FileOutputStream(to)) { copy(from, out); } }
Computes the crc32 of a module-info.class. This is necessary when the ZipOutputStream is in STORED mode.
/** * Computes the crc32 of a module-info.class. This is necessary when the * ZipOutputStream is in STORED mode. */
private void crc32ModuleInfo(ZipEntry e, byte[] bytes) throws IOException { CRC32OutputStream os = new CRC32OutputStream(); ByteArrayInputStream in = new ByteArrayInputStream(bytes); in.transferTo(os); os.updateEntry(e); }
Computes the crc32 of a Manifest. This is necessary when the ZipOutputStream is in STORED mode.
/** * Computes the crc32 of a Manifest. This is necessary when the * ZipOutputStream is in STORED mode. */
private void crc32Manifest(ZipEntry e, Manifest m) throws IOException { CRC32OutputStream os = new CRC32OutputStream(); m.write(os); os.updateEntry(e); }
Computes the crc32 of a File. This is necessary when the ZipOutputStream is in STORED mode.
/** * Computes the crc32 of a File. This is necessary when the * ZipOutputStream is in STORED mode. */
private void crc32File(ZipEntry e, File f) throws IOException { CRC32OutputStream os = new CRC32OutputStream(); copy(f, os); if (os.n != f.length()) { throw new JarException(formatMsg( "error.incorrect.length", f.getPath())); } os.updateEntry(e); } void replaceFSC(Map<Integer, String []> filesMap) { filesMap.keySet().forEach(version -> { String[] files = filesMap.get(version); if (files != null) { for (int i = 0; i < files.length; i++) { files[i] = files[i].replace(File.separatorChar, '/'); } } }); } @SuppressWarnings("serial") Set<ZipEntry> newDirSet() { return new HashSet<ZipEntry>() { public boolean add(ZipEntry e) { return ((e == null || useExtractionTime) ? false : super.add(e)); }}; } void updateLastModifiedTime(Set<ZipEntry> zes) throws IOException { for (ZipEntry ze : zes) { long lastModified = ze.getTime(); if (lastModified != -1) { String name = safeName(ze.getName().replace(File.separatorChar, '/')); if (name.length() != 0) { File f = new File(name.replace('/', File.separatorChar)); f.setLastModified(lastModified); } } } }
Extracts specified entries from JAR file.
Returns:whether entries were found and successfully extracted (indicating this was a zip file without "leading garbage")
/** * Extracts specified entries from JAR file. * * @return whether entries were found and successfully extracted * (indicating this was a zip file without "leading garbage") */
boolean extract(InputStream in, String files[]) throws IOException { ZipInputStream zis = new ZipInputStream(in); ZipEntry e; // Set of all directory entries specified in archive. Disallows // null entries. Disallows all entries if using pre-6.0 behavior. boolean entriesFound = false; Set<ZipEntry> dirs = newDirSet(); while ((e = zis.getNextEntry()) != null) { entriesFound = true; if (files == null) { dirs.add(extractFile(zis, e)); } else { String name = e.getName(); for (String file : files) { if (name.startsWith(file)) { dirs.add(extractFile(zis, e)); break; } } } } // Update timestamps of directories specified in archive with their // timestamps as given in the archive. We do this after extraction, // instead of during, because creating a file in a directory changes // that directory's timestamp. updateLastModifiedTime(dirs); return entriesFound; }
Extracts specified entries from JAR file, via ZipFile.
/** * Extracts specified entries from JAR file, via ZipFile. */
void extract(String fname, String files[]) throws IOException { ZipFile zf = new ZipFile(fname); Set<ZipEntry> dirs = newDirSet(); Enumeration<? extends ZipEntry> zes = zf.entries(); while (zes.hasMoreElements()) { ZipEntry e = zes.nextElement(); if (files == null) { dirs.add(extractFile(zf.getInputStream(e), e)); } else { String name = e.getName(); for (String file : files) { if (name.startsWith(file)) { dirs.add(extractFile(zf.getInputStream(e), e)); break; } } } } zf.close(); updateLastModifiedTime(dirs); }
Extracts next entry from JAR file, creating directories as needed. If the entry is for a directory which doesn't exist prior to this invocation, returns that entry, otherwise returns null.
/** * Extracts next entry from JAR file, creating directories as needed. If * the entry is for a directory which doesn't exist prior to this * invocation, returns that entry, otherwise returns null. */
ZipEntry extractFile(InputStream is, ZipEntry e) throws IOException { ZipEntry rc = null; // The spec requres all slashes MUST be forward '/', it is possible // an offending zip/jar entry may uses the backwards slash in its // name. It might cause problem on Windows platform as it skips // our "safe" check for leading slahs and dot-dot. So replace them // with '/'. String name = safeName(e.getName().replace(File.separatorChar, '/')); if (name.length() == 0) { return rc; // leading '/' or 'dot-dot' only path } File f = new File(name.replace('/', File.separatorChar)); if (e.isDirectory()) { if (f.exists()) { if (!f.isDirectory()) { throw new IOException(formatMsg("error.create.dir", f.getPath())); } } else { if (!f.mkdirs()) { throw new IOException(formatMsg("error.create.dir", f.getPath())); } else { rc = e; } } if (vflag) { output(formatMsg("out.create", name)); } } else { if (f.getParent() != null) { File d = new File(f.getParent()); if (!d.exists() && !d.mkdirs() || !d.isDirectory()) { throw new IOException(formatMsg( "error.create.dir", d.getPath())); } } try { copy(is, f); } finally { if (is instanceof ZipInputStream) ((ZipInputStream)is).closeEntry(); else is.close(); } if (vflag) { if (e.getMethod() == ZipEntry.DEFLATED) { output(formatMsg("out.inflated", name)); } else { output(formatMsg("out.extracted", name)); } } } if (!useExtractionTime) { long lastModified = e.getTime(); if (lastModified != -1) { f.setLastModified(lastModified); } } return rc; }
Lists contents of JAR file.
/** * Lists contents of JAR file. */
void list(InputStream in, String files[]) throws IOException { ZipInputStream zis = new ZipInputStream(in); ZipEntry e; while ((e = zis.getNextEntry()) != null) { /* * In the case of a compressed (deflated) entry, the entry size * is stored immediately following the entry data and cannot be * determined until the entry is fully read. Therefore, we close * the entry first before printing out its attributes. */ zis.closeEntry(); printEntry(e, files); } }
Lists contents of JAR file, via ZipFile.
/** * Lists contents of JAR file, via ZipFile. */
void list(String fname, String files[]) throws IOException { ZipFile zf = new ZipFile(fname); Enumeration<? extends ZipEntry> zes = zf.entries(); while (zes.hasMoreElements()) { printEntry(zes.nextElement(), files); } zf.close(); }
Outputs the class index table to the INDEX.LIST file of the root jar file.
/** * Outputs the class index table to the INDEX.LIST file of the * root jar file. */
void dumpIndex(String rootjar, JarIndex index) throws IOException { File jarFile = new File(rootjar); Path jarPath = jarFile.toPath(); Path tmpPath = createTempFileInSameDirectoryAs(jarFile).toPath(); try { if (update(Files.newInputStream(jarPath), Files.newOutputStream(tmpPath), null, null, index)) { try { Files.move(tmpPath, jarPath, REPLACE_EXISTING); } catch (IOException e) { throw new IOException(getMsg("error.write.file"), e); } } } finally { Files.deleteIfExists(tmpPath); } } private HashSet<String> jarPaths = new HashSet<String>();
Generates the transitive closure of the Class-Path attribute for the specified jar file.
/** * Generates the transitive closure of the Class-Path attribute for * the specified jar file. */
List<String> getJarPath(String jar) throws IOException { List<String> files = new ArrayList<String>(); files.add(jar); jarPaths.add(jar); // take out the current path String path = jar.substring(0, Math.max(0, jar.lastIndexOf('/') + 1)); // class path attribute will give us jar file name with // '/' as separators, so we need to change them to the // appropriate one before we open the jar file. JarFile rf = new JarFile(jar.replace('/', File.separatorChar)); if (rf != null) { Manifest man = rf.getManifest(); if (man != null) { Attributes attr = man.getMainAttributes(); if (attr != null) { String value = attr.getValue(Attributes.Name.CLASS_PATH); if (value != null) { StringTokenizer st = new StringTokenizer(value); while (st.hasMoreTokens()) { String ajar = st.nextToken(); if (!ajar.endsWith("/")) { // it is a jar file ajar = path.concat(ajar); /* check on cyclic dependency */ if (! jarPaths.contains(ajar)) { files.addAll(getJarPath(ajar)); } } } } } } } rf.close(); return files; }
Generates class index file for the specified root jar file.
/** * Generates class index file for the specified root jar file. */
void genIndex(String rootjar, String[] files) throws IOException { List<String> jars = getJarPath(rootjar); int njars = jars.size(); String[] jarfiles; if (njars == 1 && files != null) { // no class-path attribute defined in rootjar, will // use command line specified list of jars for (int i = 0; i < files.length; i++) { jars.addAll(getJarPath(files[i])); } njars = jars.size(); } jarfiles = jars.toArray(new String[njars]); JarIndex index = new JarIndex(jarfiles); dumpIndex(rootjar, index); }
Prints entry information, if requested.
/** * Prints entry information, if requested. */
void printEntry(ZipEntry e, String[] files) throws IOException { if (files == null) { printEntry(e); } else { String name = e.getName(); for (String file : files) { if (name.startsWith(file)) { printEntry(e); return; } } } }
Prints entry information.
/** * Prints entry information. */
void printEntry(ZipEntry e) throws IOException { if (vflag) { StringBuilder sb = new StringBuilder(); String s = Long.toString(e.getSize()); for (int i = 6 - s.length(); i > 0; --i) { sb.append(' '); } sb.append(s).append(' ').append(new Date(e.getTime()).toString()); sb.append(' ').append(e.getName()); output(sb.toString()); } else { output(e.getName()); } }
Prints usage message.
/** * Prints usage message. */
void usageError(String s) { err.println(s); err.println(getMsg("main.usage.summary.try")); }
A fatal exception has been caught. No recovery possible
/** * A fatal exception has been caught. No recovery possible */
void fatalError(Exception e) { e.printStackTrace(); }
A fatal condition has been detected; message is "s". No recovery possible
/** * A fatal condition has been detected; message is "s". * No recovery possible */
void fatalError(String s) { error(program + ": " + s); }
Print an output message; like verbose output and the like
/** * Print an output message; like verbose output and the like */
protected void output(String s) { out.println(s); }
Print an error message; like something is broken
/** * Print an error message; like something is broken */
void error(String s) { err.println(s); }
Print a warning message
/** * Print a warning message */
void warn(String s) { err.println(s); }
Main routine to start program.
/** * Main routine to start program. */
public static void main(String args[]) { Main jartool = new Main(System.out, System.err, "jar"); System.exit(jartool.run(args) ? 0 : 1); }
An OutputStream that doesn't send its output anywhere, (but could). It's here to find the CRC32 of an input file, necessary for STORED mode in ZIP.
/** * An OutputStream that doesn't send its output anywhere, (but could). * It's here to find the CRC32 of an input file, necessary for STORED * mode in ZIP. */
private static class CRC32OutputStream extends java.io.OutputStream { final CRC32 crc = new CRC32(); long n = 0; CRC32OutputStream() {} public void write(int r) throws IOException { crc.update(r); n++; } public void write(byte[] b, int off, int len) throws IOException { crc.update(b, off, len); n += len; }
Updates a ZipEntry which describes the data read by this output stream, in STORED mode.
/** * Updates a ZipEntry which describes the data read by this * output stream, in STORED mode. */
public void updateEntry(ZipEntry e) { e.setMethod(ZipEntry.STORED); e.setSize(n); e.setCrc(crc.getValue()); } }
Attempt to create temporary file in the system-provided temporary folder, if failed attempts to create it in the same folder as the file in parameter (if any)
/** * Attempt to create temporary file in the system-provided temporary folder, if failed attempts * to create it in the same folder as the file in parameter (if any) */
private File createTemporaryFile(String tmpbase, String suffix) { File tmpfile = null; try { tmpfile = File.createTempFile(tmpbase, suffix); } catch (IOException | SecurityException e) { // Unable to create file due to permission violation or security exception } if (tmpfile == null) { // Were unable to create temporary file, fall back to temporary file in the same folder if (fname != null) { try { File tmpfolder = new File(fname).getAbsoluteFile().getParentFile(); tmpfile = File.createTempFile(fname, ".tmp" + suffix, tmpfolder); } catch (IOException ioe) { // Last option failed - fall gracefully fatalError(ioe); } } else { // No options left - we can not compress to stdout without access to the temporary folder fatalError(new IOException(getMsg("error.create.tempfile"))); } } return tmpfile; } // Modular jar support
Associates a module descriptor's zip entry name along with its bytes and an optional URI. Used when describing modules.
/** * Associates a module descriptor's zip entry name along with its * bytes and an optional URI. Used when describing modules. */
interface ModuleInfoEntry { String name(); Optional<String> uriString(); InputStream bytes() throws IOException; } static class ZipFileModuleInfoEntry implements ModuleInfoEntry { private final ZipFile zipFile; private final ZipEntry entry; ZipFileModuleInfoEntry(ZipFile zipFile, ZipEntry entry) { this.zipFile = zipFile; this.entry = entry; } @Override public String name() { return entry.getName(); } @Override public InputStream bytes() throws IOException { return zipFile.getInputStream(entry); }
Returns an optional containing the effective URI.
/** Returns an optional containing the effective URI. */
@Override public Optional<String> uriString() { String uri = (Paths.get(zipFile.getName())).toUri().toString(); uri = "jar:" + uri + "/!" + entry.getName(); return Optional.of(uri); } } static class StreamedModuleInfoEntry implements ModuleInfoEntry { private final String name; private final byte[] bytes; StreamedModuleInfoEntry(String name, byte[] bytes) { this.name = name; this.bytes = bytes; } @Override public String name() { return name; } @Override public InputStream bytes() throws IOException { return new ByteArrayInputStream(bytes); }
Returns an empty optional.
/** Returns an empty optional. */
@Override public Optional<String> uriString() { return Optional.empty(); // no URI can be derived } }
Describes a module from a given zip file.
/** Describes a module from a given zip file. */
private boolean describeModule(ZipFile zipFile) throws IOException { ZipFileModuleInfoEntry[] infos = zipFile.stream() .filter(e -> isModuleInfoEntry(e.getName())) .sorted(ENTRY_COMPARATOR) .map(e -> new ZipFileModuleInfoEntry(zipFile, e)) .toArray(ZipFileModuleInfoEntry[]::new); if (infos.length == 0) { // No module descriptor found, derive and describe the automatic module String fn = zipFile.getName(); ModuleFinder mf = ModuleFinder.of(Paths.get(fn)); try { Set<ModuleReference> mref = mf.findAll(); if (mref.isEmpty()) { output(formatMsg("error.unable.derive.automodule", fn)); return true; } ModuleDescriptor md = mref.iterator().next().descriptor(); output(getMsg("out.automodule") + "\n"); describeModule(md, null, null, ""); } catch (FindException e) { String msg = formatMsg("error.unable.derive.automodule", fn); Throwable t = e.getCause(); if (t != null) msg = msg + "\n" + t.getMessage(); output(msg); } } else { return describeModuleFromEntries(infos); } return true; } private boolean describeModuleFromStream(FileInputStream fis) throws IOException { List<ModuleInfoEntry> infos = new LinkedList<>(); try (BufferedInputStream bis = new BufferedInputStream(fis); ZipInputStream zis = new ZipInputStream(bis)) { ZipEntry e; while ((e = zis.getNextEntry()) != null) { String ename = e.getName(); if (isModuleInfoEntry(ename)) { infos.add(new StreamedModuleInfoEntry(ename, zis.readAllBytes())); } } } if (infos.size() == 0) return false; ModuleInfoEntry[] sorted = infos.stream() .sorted(Comparator.comparing(ModuleInfoEntry::name, ENTRYNAME_COMPARATOR)) .toArray(ModuleInfoEntry[]::new); return describeModuleFromEntries(sorted); } private boolean lessThanEqualReleaseValue(ModuleInfoEntry entry) { return intVersionFromEntry(entry) <= releaseValue ? true : false; } private static String versionFromEntryName(String name) { String s = name.substring(VERSIONS_DIR_LENGTH); return s.substring(0, s.indexOf("/")); } private static int intVersionFromEntry(ModuleInfoEntry entry) { String name = entry.name(); if (!name.startsWith(VERSIONS_DIR)) return BASE_VERSION; String s = name.substring(VERSIONS_DIR_LENGTH); s = s.substring(0, s.indexOf('/')); return Integer.valueOf(s); }
Describes a single module descriptor, determined by the specified --release, if any, from the given ordered entries. The given infos must be ordered as per ENTRY_COMPARATOR.
/** * Describes a single module descriptor, determined by the specified * --release, if any, from the given ordered entries. * The given infos must be ordered as per ENTRY_COMPARATOR. */
private boolean describeModuleFromEntries(ModuleInfoEntry[] infos) throws IOException { assert infos.length > 0; // Informative: output all non-root descriptors, if any String releases = Arrays.stream(infos) .filter(e -> !e.name().equals(MODULE_INFO)) .map(ModuleInfoEntry::name) .map(Main::versionFromEntryName) .collect(joining(" ")); if (!releases.isEmpty()) output("releases: " + releases + "\n"); // Describe the operative descriptor for the specified --release, if any if (releaseValue != -1) { ModuleInfoEntry entry = null; int i = 0; while (i < infos.length && lessThanEqualReleaseValue(infos[i])) { entry = infos[i]; i++; } if (entry == null) { output(formatMsg("error.no.operative.descriptor", String.valueOf(releaseValue))); return false; } String uriString = entry.uriString().orElse(""); try (InputStream is = entry.bytes()) { describeModule(is, uriString); } } else { // no specific --release specified, output the root, if any if (infos[0].name().equals(MODULE_INFO)) { String uriString = infos[0].uriString().orElse(""); try (InputStream is = infos[0].bytes()) { describeModule(is, uriString); } } else { // no root, output message to specify --release output(getMsg("error.no.root.descriptor")); } } return true; } static <T> String toLowerCaseString(Collection<T> set) { if (set.isEmpty()) { return ""; } return " " + set.stream().map(e -> e.toString().toLowerCase(Locale.ROOT)) .sorted().collect(joining(" ")); } static <T> String toString(Collection<T> set) { if (set.isEmpty()) { return ""; } return " " + set.stream().map(e -> e.toString()).sorted().collect(joining(" ")); } private void describeModule(InputStream entryInputStream, String uriString) throws IOException { ModuleInfo.Attributes attrs = ModuleInfo.read(entryInputStream, null); ModuleDescriptor md = attrs.descriptor(); ModuleTarget target = attrs.target(); ModuleHashes hashes = attrs.recordedHashes(); describeModule(md, target, hashes, uriString); } private void describeModule(ModuleDescriptor md, ModuleTarget target, ModuleHashes hashes, String uriString) throws IOException { StringBuilder sb = new StringBuilder(); sb.append(md.toNameAndVersion()); if (!uriString.isEmpty()) sb.append(" ").append(uriString); if (md.isOpen()) sb.append(" open"); if (md.isAutomatic()) sb.append(" automatic"); sb.append("\n"); // unqualified exports (sorted by package) md.exports().stream() .sorted(Comparator.comparing(Exports::source)) .filter(e -> !e.isQualified()) .forEach(e -> sb.append("exports ").append(e.source()) .append(toLowerCaseString(e.modifiers())) .append("\n")); // dependences md.requires().stream().sorted() .forEach(r -> sb.append("requires ").append(r.name()) .append(toLowerCaseString(r.modifiers())) .append("\n")); // service use and provides md.uses().stream().sorted() .forEach(s -> sb.append("uses ").append(s).append("\n")); md.provides().stream() .sorted(Comparator.comparing(Provides::service)) .forEach(p -> sb.append("provides ").append(p.service()) .append(" with") .append(toString(p.providers())) .append("\n")); // qualified exports md.exports().stream() .sorted(Comparator.comparing(Exports::source)) .filter(Exports::isQualified) .forEach(e -> sb.append("qualified exports ").append(e.source()) .append(" to").append(toLowerCaseString(e.targets())) .append("\n")); // open packages md.opens().stream() .sorted(Comparator.comparing(Opens::source)) .filter(o -> !o.isQualified()) .forEach(o -> sb.append("opens ").append(o.source()) .append(toLowerCaseString(o.modifiers())) .append("\n")); md.opens().stream() .sorted(Comparator.comparing(Opens::source)) .filter(Opens::isQualified) .forEach(o -> sb.append("qualified opens ").append(o.source()) .append(toLowerCaseString(o.modifiers())) .append(" to").append(toLowerCaseString(o.targets())) .append("\n")); // non-exported/non-open packages Set<String> concealed = new TreeSet<>(md.packages()); md.exports().stream().map(Exports::source).forEach(concealed::remove); md.opens().stream().map(Opens::source).forEach(concealed::remove); concealed.forEach(p -> sb.append("contains ").append(p).append("\n")); md.mainClass().ifPresent(v -> sb.append("main-class ").append(v).append("\n")); if (target != null) { String targetPlatform = target.targetPlatform(); if (!targetPlatform.isEmpty()) sb.append("platform ").append(targetPlatform).append("\n"); } if (hashes != null) { hashes.names().stream().sorted().forEach( mod -> sb.append("hashes ").append(mod).append(" ") .append(hashes.algorithm()).append(" ") .append(toHex(hashes.hashFor(mod))) .append("\n")); } output(sb.toString()); } private static String toHex(byte[] ba) { StringBuilder sb = new StringBuilder(ba.length << 1); for (byte b: ba) { sb.append(String.format("%02x", b & 0xff)); } return sb.toString(); } static String toBinaryName(String classname) { return (classname.replace('.', '/')) + ".class"; } private boolean checkModuleInfo(byte[] moduleInfoBytes, Set<String> entries) throws IOException { boolean ok = true; if (moduleInfoBytes != null) { // no root module-info.class if null try { // ModuleDescriptor.read() checks open/exported pkgs vs packages ModuleDescriptor md = ModuleDescriptor.read(ByteBuffer.wrap(moduleInfoBytes)); // A module must have the implementation class of the services it 'provides'. if (md.provides().stream().map(Provides::providers).flatMap(List::stream) .filter(p -> !entries.contains(toBinaryName(p))) .peek(p -> fatalError(formatMsg("error.missing.provider", p))) .count() != 0) { ok = false; } } catch (InvalidModuleDescriptorException x) { fatalError(x.getMessage()); ok = false; } } return ok; }
Adds extended modules attributes to the given module-info's. The given Map values are updated in-place. Returns false if an error occurs.
/** * Adds extended modules attributes to the given module-info's. The given * Map values are updated in-place. Returns false if an error occurs. */
private void addExtendedModuleAttributes(Map<String,byte[]> moduleInfos, Set<String> packages) throws IOException { for (Map.Entry<String,byte[]> e: moduleInfos.entrySet()) { ModuleDescriptor md = ModuleDescriptor.read(ByteBuffer.wrap(e.getValue())); e.setValue(extendedInfoBytes(md, e.getValue(), packages)); } } static boolean isModuleInfoEntry(String name) { // root or versioned module-info.class if (name.endsWith(MODULE_INFO)) { int end = name.length() - MODULE_INFO.length(); if (end == 0) return true; if (name.startsWith(VERSIONS_DIR)) { int off = VERSIONS_DIR_LENGTH; if (off == end) // meta-inf/versions/module-info.class return false; while (off < end - 1) { char c = name.charAt(off++); if (c < '0' || c > '9') return false; } return name.charAt(off) == '/'; } } return false; }
Returns a byte array containing the given module-info.class plus any extended attributes. If --module-version, --main-class, or other options were provided then the corresponding class file attributes are added to the module-info here.
/** * Returns a byte array containing the given module-info.class plus any * extended attributes. * * If --module-version, --main-class, or other options were provided * then the corresponding class file attributes are added to the * module-info here. */
private byte[] extendedInfoBytes(ModuleDescriptor md, byte[] miBytes, Set<String> packages) throws IOException { ByteArrayOutputStream baos = new ByteArrayOutputStream(); InputStream is = new ByteArrayInputStream(miBytes); ModuleInfoExtender extender = ModuleInfoExtender.newExtender(is); // Add (or replace) the Packages attribute extender.packages(packages); // --main-class if (ename != null) extender.mainClass(ename); // --module-version if (moduleVersion != null) extender.version(moduleVersion); // --hash-modules if (modulesToHash != null) { String mn = md.name(); Hasher hasher = new Hasher(md, fname); ModuleHashes moduleHashes = hasher.computeHashes(mn); if (moduleHashes != null) { extender.hashes(moduleHashes); } else { warn("warning: no module is recorded in hash in " + mn); } } if (moduleResolution.value() != 0) { extender.moduleResolution(moduleResolution); } extender.write(baos); return baos.toByteArray(); }
Compute and record hashes
/** * Compute and record hashes */
private class Hasher { final ModuleHashesBuilder hashesBuilder; final ModuleFinder finder; final Set<String> modules; Hasher(ModuleDescriptor descriptor, String fname) throws IOException { // Create a module finder that finds the modular JAR // being created/updated URI uri = Paths.get(fname).toUri(); ModuleReference mref = new ModuleReference(descriptor, uri) { @Override public ModuleReader open() { throw new UnsupportedOperationException("should not reach here"); } }; // Compose a module finder with the module path and // the modular JAR being created or updated this.finder = ModuleFinder.compose(moduleFinder, new ModuleFinder() { @Override public Optional<ModuleReference> find(String name) { if (descriptor.name().equals(name)) return Optional.of(mref); else return Optional.empty(); } @Override public Set<ModuleReference> findAll() { return Collections.singleton(mref); } }); // Determine the modules that matches the pattern {@code modulesToHash} Set<String> roots = finder.findAll().stream() .map(ref -> ref.descriptor().name()) .filter(mn -> modulesToHash.matcher(mn).find()) .collect(Collectors.toSet()); // use system module path unless it creates a modular JAR for // a module that is present in the system image e.g. upgradeable // module ModuleFinder system; String name = descriptor.name(); if (name != null && ModuleFinder.ofSystem().find(name).isPresent()) { system = ModuleFinder.of(); } else { system = ModuleFinder.ofSystem(); } // get a resolved module graph Configuration config = Configuration.empty().resolve(system, finder, roots); // filter modules resolved from the system module finder this.modules = config.modules().stream() .map(ResolvedModule::name) .filter(mn -> roots.contains(mn) && !system.find(mn).isPresent()) .collect(Collectors.toSet()); this.hashesBuilder = new ModuleHashesBuilder(config, modules); }
Compute hashes of the specified module. It records the hashing modules that depend upon the specified module directly or indirectly.
/** * Compute hashes of the specified module. * * It records the hashing modules that depend upon the specified * module directly or indirectly. */
ModuleHashes computeHashes(String name) { if (hashesBuilder == null) return null; return hashesBuilder.computeHashes(Set.of(name)).get(name); } } // sort base entries before versioned entries, and sort entry classes with // nested classes so that the outter class appears before the associated // nested class static Comparator<String> ENTRYNAME_COMPARATOR = (s1, s2) -> { if (s1.equals(s2)) return 0; boolean b1 = s1.startsWith(VERSIONS_DIR); boolean b2 = s2.startsWith(VERSIONS_DIR); if (b1 && !b2) return 1; if (!b1 && b2) return -1; int n = 0; // starting char for String compare if (b1 && b2) { // normally strings would be sorted so "10" goes before "9", but // version number strings need to be sorted numerically n = VERSIONS_DIR.length(); // skip the common prefix int i1 = s1.indexOf('/', n); int i2 = s2.indexOf('/', n); if (i1 == -1) throw new Validator.InvalidJarException(s1); if (i2 == -1) throw new Validator.InvalidJarException(s2); // shorter version numbers go first if (i1 != i2) return i1 - i2; // otherwise, handle equal length numbers below } int l1 = s1.length(); int l2 = s2.length(); int lim = Math.min(l1, l2); for (int k = n; k < lim; k++) { char c1 = s1.charAt(k); char c2 = s2.charAt(k); if (c1 != c2) { // change natural ordering so '.' comes before '$' // i.e. outer classes come before nested classes if (c1 == '$' && c2 == '.') return 1; if (c1 == '.' && c2 == '$') return -1; return c1 - c2; } } return l1 - l2; }; static Comparator<ZipEntry> ENTRY_COMPARATOR = Comparator.comparing(ZipEntry::getName, ENTRYNAME_COMPARATOR); }