android tinker热更与AndResGuard混淆适配
导读 随着项目越来越大，APK的包也越来越大，前几天对APK进行减包处理，其中有一个资源混淆的减包手段，作用有两点：一是通过混淆资源ID长度同时利用7z深度压缩，减小了apk包大小；二是混淆后在安全性方面有一点提升，提高了逆向破解难度。但项目原来引进了Tinker热更新，这样就存在以下两个问题：
1、资源混淆对热更的包是否有影响，会不会热更后出现找不到资源的情况
2、如果没有影响，Tinker生成补丁后会产生新的基准包，tinker默认是不进行资源混淆的assemble命令执行，如何自动实现执行资源混淆
问题一：资源混淆对热更的包是否有影响，会不会热更后出现找不到资源的情况
tinker主要对dex文件进行处理，AndResGuard主要对资源文件以及resources.arsc进行混淆，在原理上互不影响，但是热更也是产生一个newAPK后与基准oldAPK进行比较后产生patch文件，oldAPK推出历史，newAPK成为下一个热更的基准包，而且newAPK需要再重新资源混淆后才作为基准包，这就是问题二的由来。
问题二：资源混淆对热更的包是否有影响，会不会热更后出现找不到资源的情况
问题二需要解决三个问题：
(1) 以已经资源混淆的包作为基准包
(2) newAPK需要资源混淆
(3) newAPK作为新的基准包
http://www.cnblogs.com/yyangblog/p/6268818.html
http://w4lle.github.io/2017/01/22/gradle-modules/?utm_source=tuicool&utm_medium=referral
http://blog.csdn.net/maosidiaoxian/article/details/42417779
注意：资源混淆的插件一定要配置在tinker插件前面，应为tinker热更需要依赖资源混淆后的APK
附以上问题脚本源码：
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| ext {
bakResguard = file("${buildDir}${File.separator}bakApk${File.separator}resguard")
}
android.applicationVariants.all { variant ->
String taskBaseName = variant.baseName
def taskName = variant.name
tasks.all {
if (variant.buildType.name == 'release') {
boolean hasFlavors = false
if (variant.productFlavors.size() > 0) {
hasFlavors = true
}
def favor
if (hasFlavors) {
favor = taskBaseName.split('-')[0]
}
if ("tinkerPatch${taskName.capitalize()}".equalsIgnoreCase(it.name)) {
def resguardTask
tasks.all {
if (it.name.startsWith('resguard')) {
resguardTask = it;
}
}
it.doLast {
copyBaseApk(hasFlavors,taskBaseName,favor)
}
it.dependsOn resguardTask
}
if ("resguard${taskName.capitalize()}".equalsIgnoreCase(it.name)) {
it.doLast {
copyBaseApk(hasFlavors,taskBaseName,favor)
}
}
}
}
}
def copyBaseApk(def hasFlavors,def taskBaseName,def favor){
def date = new Date().format("MMdd-HH-mm-ss")
def outPath = bakResguard.absolutePath + File.separator + "app-${date}"
if(hasFlavors){
outPath = outPath + File.separator +favor
}
File file = new File(outPath);
if (!file.exists()) {
file.mkdirs()
}
copy {
def dd = "${buildDir}${File.separator}outputs${File.separator}apk${File.separator}AndResGuard_${project.getName()}-${taskBaseName}${File.separator}${project.getName()}-${taskBaseName}_aligned_signed.apk"
print '<<<<<<<<<<<<funccc <<<<<<' + dd + '\n'
def aa = outPath
print '<<<<<<<<<<<<funccc <<<<<<' + aa + '\n'
from dd
into aa
rename { String fileName ->
fileName.replace("${project.getName()}-${taskBaseName}_aligned_signed.apk", "${project.getName()}-${taskBaseName}.apk")
}
def mappingPath
if(hasFlavors){
mappingPath ="${buildDir}${File.separator}outputs${File.separator}mapping${File.separator}$favor${File.separator}release${File.separator}mapping.txt"
}else{
mappingPath ="${buildDir}${File.separator}outputs${File.separator}mapping${File.separator}release${File.separator}mapping.txt"
}
from mappingPath
into outPath
rename { String fileName ->
fileName.replace("mapping.txt", "${project.getName()}-${taskBaseName}-mapping.txt")
}
def RPath
if(hasFlavors){
RPath ="${buildDir}${File.separator}intermediates${File.separator}symbols${File.separator}$favor${File.separator}release${File.separator}R.txt"
}else{
RPath ="${buildDir}${File.separator}intermediates${File.separator}symbols${File.separator}release${File.separator}R.txt"
}
from RPath
into outPath
rename { String fileName ->
fileName.replace("R.txt", "${project.getName()}-${taskBaseName}-R.txt")
}
from "${buildDir}${File.separator}outputs${File.separator}apk${File.separator}AndResGuard_${project.getName()}-${taskBaseName}${File.separator}resource_mapping_${project.getName()}-${taskBaseName}.txt"
into outPath
rename { String fileName ->
fileName.replace("resource_mapping_${project.getName()}-${taskBaseName}.txt", "${project.getName()}-${taskBaseName}-resource_mapping.txt")
}
}
}
|
