防手抖开源之 Git 钩子
- 2020 年 2 月 10 日
- 筆記
最近“从开源到跑路”的事件逐渐增多，给涉事企业造成了不小的损失。因而相关的防范工作显得愈发重要。
客观而言，人为手动的防范显得原始和笨拙，好在git提供了相关的钩子方法，为我们这里的防范提供了可行性。
这里我们以git push 命令对应的pre-push钩子为例，因为想要开源出去，这个命令通常是必须执行的。
编写git pre-hook
#!/bin/sh # An example hook script to verify what is about to be pushed. Called by "git # push" after it has checked the remote status, but before anything has been # pushed. If this script exits with a non-zero status nothing will be pushed. # # This hook is called with the following parameters: # # $1 -- Name of the remote to which the push is being done # $2 -- URL to which the push is being done # # If pushing without using a named remote those arguments will be equal. # # Information about the commits which are being pushed is supplied as lines to # the standard input in the form: # # <local ref> <local sha1> <remote ref> <remote sha1> # # This sample shows how to prevent push of commits where the log message starts # with "WIP" (work in progress). remote="$1" url="$2" echo $url if [[ $url == *"[email protected]"* ]]; then echo "github repo refused to push" exit 1 fi if [[ $url == *"https://github.com"* ]]; then echo "github repo refused to push" exit 1 fi z40=0000000000000000000000000000000000000000 while read local_ref local_sha remote_ref remote_sha do if [ "$local_sha" = $z40 ] then # Handle delete : else if [ "$remote_sha" = $z40 ] then # New branch, examine all commits range="$local_sha" else # Update to existing branch, examine new commits range="$remote_sha..$local_sha" fi # Check for WIP commit commit=`git rev-list -n 1 --grep '^WIP' "$range"` if [ -n "$commit" ] then echo >&2 "Found WIP commit in $local_ref, not pushing" exit 1 fi fi done exit 0
拦截代码解释
remote="$1" url="$2" echo $url if [[ $url == *"[email protected]"* ]]; then echo "github repo refused to push" exit 1 fi if [[ $url == *"https://github.com"* ]]; then echo "github repo refused to push" exit 1 fi
上述的代码
- 拦截git协议的到github远程仓库的push请求
- 拦截https协议的到github远程仓库的push请求
除此之外，我们还可以做什么
- 可以根据自身需要增加
[email protected]等屏蔽 - 根据需要，可以判定仓库名称来屏蔽。
- 编写shell语句，实现更加复杂的拦截处理
完整文件地址: https://asset.droidyue.com/content/pre-push
针对单个Repo生效
将上述pre-push 放入项目的.git/hooks/下面即可
针对全局生效
git 2.9 开始支持 设置全局git hook路径
git config --global core.hooksPath /Users/yourUserName/.git/hooks
将上述pre-push 放入/Users/yourUserName/.git/hooks
支持文件可执行权限
chmod a+x your_pre_push_hook_path
效果演示
[email protected]:/tmp/vim_katana(master|✔) % git push origin master [email protected]:androidyue/vim_katana.git github repo refused to push error: failed to push some refs to '[email protected]:androidyue/vim_katana.git'
效果有多少
防止恶意开源，并不能。只是理论上稍微提高了一点门槛。
这是因为
- 恶意开源者可能删除这些git钩子
- 恶意开源者可以使用别的形式公开代码
它能做什么
- 如题所属，它是自身无意原因或者某些恶意中间环节导致开源的最后一道防线。
源码安全无小事，事事需谨慎。
