Implementing this is highly dangerous unless you fully control the repository and its contents. Proceed with caution.
- Feasibility Test: Assess the practicality of implementing a post-clone action in Git repositories.
- Tool Automation: Facilitate the automatic addition of tools (like git hooks) to repositories, enhancing our existing setup-hooks script.
Modify your shell profile to replace the native git command with a custom wrapper. This can be achieved by adding the following to your .bash_profile, .bashrc or .bash_aliases.
function git()
{
command git-wrapper "$@"
}
Create a git-wrapper script that manages the cloning process and triggers a post-clone action. This scripts needs to be able to run from anywhere, we recommend placing it in your ~/bin directory or any other directory that is part of your $PATH.
#!/usr/bin/env bash
function get_git_root()
{
local repo
IFS=' ' read -r -a array <<< "$@"
repo=${array[-1]}
repo=${repo##*/}
repo=${repo%%.*}
realpath "${repo}"
}
function main()
{
if [[ $1 == "clone" ]]; then
shift
if command git clone "$@"; then
root=$(get_git_root "$@")
if [[ -d "${root}" ]]; then
command post-clone "$root"
fi
fi
else
command git "$@";
fi
}
main "$@"
Create a post-clone script which is executed by the git wrapper. This script also needs to be able to run from anywhere, we recommend placing it in your ~/bin directory or any other directory that is part of your $PATH.
#!/usr/bin/env bash
cd $1
echo $PWD
In this example we simply have the script echoing the current directory to show that it is indeed executing inside the newly cloned repository.
Expand the post-clone script to execute additional scripts.
#!/usr/bin/env bash
cd $1
bash repo-post-clone.sh
This is a very overly-simplified example!
To prevent unauthorized modifications:
- Repository Whitelist: Ensure the repository is in a list of approved repositories.
- Ownership Verification: Extend checks to verify the repository's owning organization.
#!/usr/bin/env bash
safe_repos=("GitToolbox/post-clone")
# Function to check if a value is in an array
function not_in()
{
local array="$1[@]"
local seeking="$2"
local in=0
for element in "${!array}"; do
if [[ "$element" == "$seeking" ]]; then
in=1
break
fi
done
return $in
}
cd $1
# Get the remote URL of the repository
remote_url=$(git config --get remote.origin.url)
# Check if remote_url is empty
if [ -z "$remote_url" ]; then
echo "This directory is not a Git repository or has no remote origin set. Aborting!"
exit 1
fi
# Extract the org and repo name from the URL
# Support different URL formats (HTTPS and SSH)
if [[ $remote_url =~ ^https:// ]]; then
# HTTPS URL format: https://github.com/org/repo.git
org_name=$(echo "$remote_url" | awk -F'/' '{print $(NF-1)}')
repo_name=$(echo "$remote_url" | awk -F'/' '{print $NF}' | sed 's/.git$//')
elif [[ $remote_url =~ ^git@ ]]; then
# SSH URL format: [email protected]:org/repo.git
org_name=$(echo "$remote_url" | awk -F'[/:]' '{print $(NF-1)}')
repo_name=$(echo "$remote_url" | awk -F'[/:]' '{print $NF}' | sed 's/.git$//')
else
echo "Unsupported URL format. Aborting!"
exit 1
fi
if not_in safe_repos "$org_name/$repo_name"; then
echo "This is not from an a safe source - Aborting!"
exit 1
fi
echo "Executing post-clone.sh in ${org_name}/${repo_name}"
bash repo-post-clone.sh
Use these scripts with caution and implement security checks to avoid potential misuse. Ensure thorough testing in a controlled environment.