Use Apache Commons Compress instead of java.util.zip

When the SDK installer unarchives the zip files, it is important to keep
the permissions for executable (Linux/MacOS) or the tools required to
build applications (aapt, aidl, ...) won't work.

Since java.util.zip does not provide support for permissions, we now
use the Apache Commons Compress component that allows us to read the
permission from the archive.

build/sdk.atree

@@ -127,6 +127,7 @@ framework/anttasks.jar tools/lib/anttasks.jar
 
 # sdkmanager
 bin/android tools/android
+framework/commons-compress-1.0.jar tools/lib/commons-compress-1.0.jar
 framework/sdklib.jar tools/lib/sdklib.jar
 framework/sdkuilib.jar tools/lib/sdkuilib.jar
 framework/sdkmanager.jar tools/lib/sdkmanager.jar

tools/sdkmanager/libs/sdklib/.classpath

@@ -5,5 +5,6 @@
 	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
 	<classpathentry combineaccessrules="false" kind="src" path="/AndroidPrefs"/>
 	<classpathentry kind="con" path="org.eclipse.jdt.junit.JUNIT_CONTAINER/3"/>
+	<classpathentry kind="var" path="ANDROID_SRC/prebuilt/common/commons-compress/commons-compress-1.0.jar"/>
 	<classpathentry kind="output" path="bin"/>
 </classpath>

tools/sdkmanager/libs/sdklib/src/Android.mk

@@ -20,7 +20,8 @@ LOCAL_SRC_FILES := $(call all-subdir-java-files)
 LOCAL_JAVA_RESOURCE_DIRS := .
 
 LOCAL_JAVA_LIBRARIES := \
-        androidprefs
+        androidprefs \
+        commons-compress-1.0
 
 LOCAL_MODULE := sdklib
 

tools/sdkmanager/libs/sdklib/src/com/android/sdklib/internal/repository/Archive.java

@@ -16,19 +16,21 @@
 
 package com.android.sdklib.internal.repository;
 
+import com.android.sdklib.SdkConstants;
 import com.android.sdklib.SdkManager;
 
+import org.apache.commons.compress.archivers.zip.ZipArchiveEntry;
+import org.apache.commons.compress.archivers.zip.ZipFile;
+
 import java.io.File;
-import java.io.FileInputStream;
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.net.URL;
 import java.security.MessageDigest;
 import java.security.NoSuchAlgorithmException;
+import java.util.Enumeration;
 import java.util.Properties;
-import java.util.zip.ZipEntry;
-import java.util.zip.ZipInputStream;
 
 
 /**
@@ -692,6 +694,7 @@ public class Archive implements IDescription {
      * unarchiving. However we return that root folder name to the caller, as it can be used
      * as a template to know what destination directory to use in the Add-on case.
      */
+    @SuppressWarnings("unchecked")
     private boolean unzipFolder(File archiveFile,
             long compressedSize,
             File unzipDestFolder,
@@ -701,11 +704,13 @@ public class Archive implements IDescription {
 
         description += " (%1$d%%)";
 
-        FileInputStream fis = null;
+        ZipFile zipFile = null;
-        ZipInputStream  zis = null;
         try {
-            fis = new FileInputStream(archiveFile);
+            zipFile = new ZipFile(archiveFile);
-            zis = new ZipInputStream(fis);
+
+            // figure if we'll need to set the unix permission
+            boolean usingUnixPerm = SdkConstants.CURRENT_PLATFORM == SdkConstants.PLATFORM_DARWIN ||
+                    SdkConstants.CURRENT_PLATFORM == SdkConstants.PLATFORM_LINUX;
 
             // To advance the percent and the progress bar, we don't know the number of
             // items left to unzip. However we know the size of the archive and the size of
@@ -718,8 +723,10 @@ public class Archive implements IDescription {
 
             byte[] buf = new byte[65536];
 
-            ZipEntry entry;
+            Enumeration<ZipArchiveEntry> entries =
-            while ((entry = zis.getNextEntry()) != null) {
+                    (Enumeration<ZipArchiveEntry>)zipFile.getEntries();
+            while (entries.hasMoreElements()) {
+                ZipArchiveEntry entry = entries.nextElement();
 
                 String name = entry.getName();
 
@@ -768,7 +775,8 @@ public class Archive implements IDescription {
                 try {
                     fos = new FileOutputStream(destFile);
                     int n;
-                    while ((n = zis.read(buf)) != -1) {
+                    InputStream entryContent = zipFile.getInputStream(entry);
+                    while ((n = entryContent.read(buf)) != -1) {
                         if (n > 0) {
                             fos.write(buf, 0, n);
                         }
@@ -779,6 +787,11 @@ public class Archive implements IDescription {
                     }
                 }
 
+                // if needed set the permissions.
+                if (usingUnixPerm) {
+                    setPermission(destFile, entry.getUnixMode());
+                }
+
                 // Increment progress bar to match. We update only between files.
                 for(incTotal += entry.getCompressedSize(); incCurr < incTotal; incCurr += incStep) {
                     monitor.incProgress(1);
@@ -801,16 +814,9 @@ public class Archive implements IDescription {
             monitor.setResult("Unzip failed: %1$s", e.getMessage());
 
         } finally {
-            if (zis != null) {
+            if (zipFile != null) {
                 try {
-                    zis.close();
+                    zipFile.close();
-                } catch (IOException e) {
-                    // pass
-                }
-            }
-            if (fis != null) {
-                try {
-                    fis.close();
                 } catch (IOException e) {
                     // pass
                 }
@@ -902,5 +908,20 @@ public class Archive implements IDescription {
         return false;
     }
 
+    /**
+     * Sets the Unix permission on a file or folder.
+     * @param file The file to set permissions on.
+     * @param unixMode the permissions as received from {@link ZipArchiveEntry#getUnixMode()}.
+     * @throws IOException
+     */
+    private void setPermission(File file, int unixMode) throws IOException {
+        // permissions contains more than user/group/all, and we need the 777 display mode, so we
+        // convert it in octal string and take the last 3 digits.
+        String permission = String.format("%o", unixMode);
+        permission = permission.substring(permission.length() - 3, permission.length());
 
+        Runtime.getRuntime().exec(new String[] {
+           "chmod", permission, file.getAbsolutePath()
+        });
+    }
 }