Android -- 混淆

混淆本质

把原来有具体含义的类名,变量名,方法名,修改成让人看不懂的名字,例如方法名getxx混淆为方法名a。

Android Studio中的混淆

Android工程目录下有个文件,proguard-rules.pro,内容是:

# Add project specific ProGuard rules here.
# By default, the flags in this file are appended to flags specified
# in /usr/local/sdk/tools/proguard/proguard-android.txt
# You can edit the include path and order by changing the proguardFiles
# directive in build.gradle.
#
# For more details, see
#   http://developer.android.com/guide/developing/tools/proguard.html

# Add any project specific keep options here:

# If your project uses WebView with JS, uncomment the following
# and specify the fully qualified class name to the JavaScript interface
# class:
#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
#   public *;
#}

proguard-rules.pro是AS中专用的proguard配置文件,其实只是后缀名不同,与Eclipse中的proguard-project.txt是一样的,配置规则相同,后面会详细提到。

在gradle中处理混淆的语句是:

buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }

这个proguard-android.txt是sdk中groguard默认的文件,而文件是存在于sdk/tools/proguard/中:

# This is a configuration file for ProGuard.
# http://proguard.sourceforge.net/index.html#manual/usage.html

-dontusemixedcaseclassnames
-dontskipnonpubliclibraryclasses
-verbose

# Optimization is turned off by default. Dex does not like code run
# through the ProGuard optimize and preverify steps (and performs some
# of these optimizations on its own).
-dontoptimize
-dontpreverify
# Note that if you want to enable optimization, you cannot just
# include optimization flags in your own project configuration file;
# instead you will need to point to the
# "proguard-android-optimize.txt" file instead of this one from your
# project.properties file.

-keepattributes *Annotation*
-keep public class com.google.vending.licensing.ILicensingService
-keep public class com.android.vending.licensing.ILicensingService

# For native methods, see http://proguard.sourceforge.net/manual/examples.html#native
-keepclasseswithmembernames class * {
    native <methods>;
}

# keep setters in Views so that animations can still work.
# see http://proguard.sourceforge.net/manual/examples.html#beans
-keepclassmembers public class * extends android.view.View {
   void set*(***);
   *** get*();
}

# We want to keep methods in Activity that could be used in the XML attribute onClick
-keepclassmembers class * extends android.app.Activity {
   public void *(android.view.View);
}

# For enumeration classes, see http://proguard.sourceforge.net/manual/examples.html#enumerations
-keepclassmembers enum * {
    public static **[] values();
    public static ** valueOf(java.lang.String);
}

-keep class * implements android.os.Parcelable {
  public static final android.os.Parcelable$Creator *;
}

-keepclassmembers class **.R$* {
    public static <fields>;
}

# The support library contains references to newer platform versions.
# Don't warn about those in case this app is linking against an older
# platform version.  We know about them, and they are safe.
-dontwarn android.support.**

将runProguard设置为true,gradle混淆编译:

./gradlew assembleRelease

语法

# -------------------------------------
# android 原始混淆模板
# -------------------------------------

# ----------------------------------
#  通过指定数量的优化能执行
#  -optimizationpasses n
# ----------------------------------
-optimizationpasses 5

# ----------------------------------
#   混淆时不会产生形形色色的类名 
#   -dontusemixedcaseclassnames
# ----------------------------------
#-dontusemixedcaseclassnames
# ----------------------------------
#      指定不去忽略非公共的库类
#  -dontskipnonpubliclibraryclasses
# ----------------------------------
#-dontskipnonpubliclibraryclasses

# ----------------------------------
#       不预校验
#    -dontpreverify
# ----------------------------------
# -dontpreverify

# ----------------------------------
#      输出生成信息
#       -verbose
# ----------------------------------
-verbose

# ----------------------------------
#        优化选项
#   optimizations  {optimization_filter} 
# ----------------------------------
-optimizations !code/simplification/arithmetic,!field/*,!class/merging/*

-keep public class * extends android.app.Activity
-keep public class * extends android.app.Application
-keep public class * extends android.app.Service
-keep public class * extends android.content.BroadcastReceiver
-keep public class * extends android.content.ContentProvider
-keep public class * extends android.app.backup.BackupAgentHelper
-keep public class * extends android.preference.Preference
-keep public class com.android.vending.licensing.ILicensingService

-keepclasseswithmembernames class * {
    native <methods>;
}
# -----------------
# modify 修改合并
# -----------------
-keep public class * extends android.view.View {
    public <init>(android.content.Context);
    public <init>(android.content.Context, android.util.AttributeSet);
    public <init>(android.content.Context, android.util.AttributeSet, int);
    public void set*(...);
}

-keepclassmembers enum * {
    public static **[] values();
    public static ** valueOf(java.lang.String);
}

-keep class * implements android.os.Parcelable {
  public static final android.os.Parcelable$Creator *;
}

#--------------------------
# 保护类型   -keepattributes 说明
# Exceptions, Signature, Deprecated, SourceFile, SourceDir, LineNumberTable, LocalVariableTable, 
# LocalVariableTypeTable, Synthetic, EnclosingMethod, RuntimeVisibleAnnotations, RuntimeInvisibleAnnotations, 
# RuntimeVisibleParameterAnnotations, RuntimeInvisibleParameterAnnotations, and AnnotationDefault
# --------------------
-keepattributes **
-libraryjars <java.home>/lib/rt.jar

# ----------------------
#  不压缩指定的文件
#  -dontshrink
# ----------------------
-dontshrink

# ----------------------
#  不优化指定的文件
#  -dontoptimize
# -----------------------
-dontoptimize

# -----------------------
#  不混淆指定的文件
#  -dontobfuscate
# -----------------------

# ----- 混淆包路径 -------
-repackageclasses ''
-flattenpackagehierarchy ''
-target 1.6

# -------- 以下是使用了 roboguice-1.1.2.jar 以及 guice-2.0-no_app.jar 功能需要保护的字段及类相关 --------
-keep class com.google.inject.Binder
-keepclassmembers class * {
    @com.google.inject.Inject <init>(...);
}
-keepclassmembers class * {
    void *(**On*Event); 
}
-keepclassmembers class **.R$* {
    public static <fields>;
}

# ------ 编译时需要用到的 jar 包
-libraryjars D:/dev_rc/android-sdk-windows/add-ons/addon_google_apis_google_inc_11/libs/maps.jar

# ------ 保护 谷歌第三方 jar 包,界面特效 ----------
-keep class android.support.v4.**
-dontwarn android.support.v4.**

# ------ 保护百度地址jar包 --------
-keep class com.baidu.mapapi.** { *; }
-dontwarn com.baidu.mapapi.**

# --- 打包时忽略以下类的警告 --
-dontwarn com.classpackage.AA

#-keepnames class * implements java.io.Serializable
# ---------保护所有实体中的字段名称----------
-keepclassmembers class * implements java.io.Serializable {
    <fields>;
}

# --------- 保护类中的所有方法名 ------------
-keepclassmembers class * {
	public <methods>;
}

更多可查看:http://proguard.sourceforge.net/index.html#manual/examples.html

-keep {Modifier} {class_specification} 保护指定的类文件和类的成员
-keepclassmembers {modifier} {class_specification} 保护指定类的成员,如果此类受到保护他们会保护的更好
-keepclasseswithmembers {class_specification} 保护指定的类和类的成员,但条件是所有指定的类和类成员是要存在。
-keepnames {class_specification} 保护指定的类和类的成员的名称(如果他们不会压缩步骤中删除)
-keepclassmembernames {class_specification} 保护指定的类的成员的名称(如果他们不会压缩步骤中删除)
-keepclasseswithmembernames {class_specification} 保护指定的类和类的成员的名称,如果所有指定的类成员出席(在压缩步骤之后)
-printseeds {filename} 列出类和类的成员-keep选项的清单,标准输出到给定的文件

#压缩

-dontshrink 不压缩输入的类文件
-printusage {filename}
-whyareyoukeeping {class_specification}

#优化

-dontoptimize 不优化输入的类文件
-assumenosideeffects {class_specification} 优化时假设指定的方法,没有任何副作用
-allowaccessmodification 优化时允许访问并修改有修饰符的类和类的成员

#混淆

-dontobfuscate 不混淆输入的类文件
-obfuscationdictionary {filename} 使用给定文件中的关键字作为要混淆方法的名称
-overloadaggressively 混淆时应用侵入式重载
-useuniqueclassmembernames 确定统一的混淆类的成员名称来增加混淆
-flattenpackagehierarchy {package_name} 重新包装所有重命名的包并放在给定的单一包中
-repackageclass {package_name} 重新包装所有重命名的类文件中放在给定的单一包中
-dontusemixedcaseclassnames 混淆时不会产生形形色色的类名
-keepattributes {attribute_name,...} 保护给定的可选属性,例如LineNumberTable, LocalVariableTable, SourceFile, Deprecated, Synthetic, Signature, and InnerClasses.
-renamesourcefileattribute {string} 设置源文件中给定的字符串常量

后面的文件名,类名,或者包名等可以使用占位符代替

?表示一个字符

可以匹配多个字符,但是如果是一个类,不会匹配其前面的包*] 可以匹配多个字符,会匹配前面的包名。

在android中在android Manifest文件中的activity,service,provider, receviter,等都不能进行混淆。一些在xml中配置的view也不能进行混淆,android提供的默认配置中都有。

混淆的输出文件及用处

混淆之后,会给我们输出一些文件,在gradle方式下是在/build/proguard/目录下,ant是在/bin/proguard目录,eclipse构建在/proguard目录像。

分别有以下文件:

+ dump.txt 描述apk文件中所有类文件间的内部结构。

+ mapping.txt 列出了原始的类,方法,和字段名与混淆后代码之间的映射。

+ seeds.txt 列出了未被混淆的类和成员

+ usage.txt 列出了从apk中删除的代码

当我们发布的release版本的程序出现bug时,可以通过以上文件(特别时mapping.txt)文件找到错误原始的位置,进行bug修改。同时,可能一开始的proguard配置有错误,也可以通过错误日志,根据这些文件,找到哪些文件不应该混淆,从而修改proguard的配置。

一些常用包的混淆配置

sharesdk混淆注意

-keep class android.net.http.SslError
-keep class android.webkit.**{*;}
-keep class cn.sharesdk.**{*;}
-keep class com.sina.**{*;}
-keep class m.framework.**{*;}

Gson混淆配置

-keepattributes *Annotation*
-keep class sun.misc.Unsafe { *; }
-keep class com.idea.fifaalarmclock.entity.***
-keep class com.google.gson.stream.** { *; }

Umeng sdk混淆配置

-keepclassmembers class * {
   public <init>(org.json.JSONObject);
}

-keep class com.umeng.**

-keep public class com.idea.fifaalarmclock.app.R$*{
    public static final int *;
}

-keep public class com.umeng.fb.ui.ThreadView {
}

-dontwarn com.umeng.**

-dontwarn org.apache.commons.**

-keep public class * extends com.umeng.**

-keep class com.umeng.** {*; }

我是天王盖地虎的分割线

posted @ 2015-09-02 10:09  我爱物联网  阅读(1410)  评论(1编辑  收藏  举报
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