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是否可以在本地(使用adb或其他方式)实现 Google Play 在“智能应用更新”中所做的事情?

我想做的是在 PC 上创建一个二进制差异(使用一些命令行工具),然后使用 Android 工具(adb、shell 等)将差异部署到模拟器/设备。

我知道 https://android.stackexchange.com/questions/36421/what-is-the-applypatch-tool-and-how-does-one-use-it 它没有提供有关如何实际操作的任何信息创建和应用补丁,只是什么adb shell applypatch

我试图在这里快速查看进行修补的 C++ Android 实现代码:https ://android.googlesource.com/platform/bootable/recovery/+/master/applypatch/main.cpp#167

到目前为止,我使用 bsdiff 创建了一个二进制差异,它显然使用了与 Google Play 和 Android 使用的相同算法。但我不知道如何实际应用补丁。

编辑:为了澄清,这是一个很好的例子:

  • com.appv1.apk在我的电脑上,也安装在设备/模拟器上。
  • com.appv2.apk的电脑上有。
  • 使用我创建和调用bsdiff之间的二进制差异让我们说com.appv1.apkcom.appv2.apkdiff.bin

现在,adb我需要运行以diff.bin在设备/模拟器上进行部署的实际命令是什么,以便在部署差异之后,com.appv1.apk设备/模拟器上变成com.appv2.apk

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1 回答 1

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我会说在使用打印输出之间:

usage: applypatch [-b <bonus-file>] <src-file> <tgt-file> <tgt-sha1> <tgt-size> [<src-sha1>:<patch> ...]
   or  applypatch -c <file> [<sha1> ...]
   or  applypatch -s <bytes>
   or  applypatch -l

Filenames may be of the form
  MTD:<partition>:<len_1>:<sha1_1>:<len_2>:<sha1_2>:...
to specify reading from or writing to an MTD partition.

以及以下评论:

// This program applies binary patches to files in a way that is safe
// (the original file is not touched until we have the desired
// replacement for it) and idempotent (it's okay to run this program
// multiple times).
//
// - if the sha1 hash of <tgt-file> is <tgt-sha1>, does nothing and exits
//   successfully.
//
// - otherwise, if no <src-sha1>:<patch> is provided, flashes <tgt-file> with
//   <src-file>. <tgt-file> must be a partition name, while <src-file> must
//   be a regular image file. <src-file> will not be deleted on success.
//
// - otherwise, if the sha1 hash of <src-file> is <src-sha1>, applies the
//   bsdiff <patch> to <src-file> to produce a new file (the type of patch
//   is automatically detected from the file header).  If that new
//   file has sha1 hash <tgt-sha1>, moves it to replace <tgt-file>, and
//   exits successfully.  Note that if <src-file> and <tgt-file> are
//   not the same, <src-file> is NOT deleted on success.  <tgt-file>
//   may be the string "-" to mean "the same as src-file".
//
// - otherwise, or if any error is encountered, exits with non-zero
//   status.
//
// <src-file> (or <file> in check mode) may refer to an EMMC partition
// to read the source data.  See the comments for the
// LoadPartitionContents() function for the format of such a filename.

这很简单。

com.appv1.apk因此,修补并将diff.bin结果保存到的基本命令com.appv2.apk是:

applypatch com.appv1.apk com.appv2.apk <com.appv2.apk SHA1> <com.appv2.apk size> <com.appv1.apk SHA1>:diff.bin
于 2016-09-15T14:35:48.937 回答