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gitea2github/g2g.sh

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#!/usr/bin/env bash
# shellcheck shell=bash
# ___ __ _ ___ __ _
# | _ \/__\| |/ / | \| |
# | v / \/ | <| | | ' |
# |_|_\\__/|_|\_\_|_|\__|
#
# @name : g2g
# @version : 1.0.0
# @date : 12/02/2022
# @description : Gitea to Github : Simple Gitea hook / service who mirroring all your Gitea repo to Github (with git push --mirror).
# @author : Rokin
# @contact : git@rokin.in
# @website : https://git.rokin.in
#
# @install : (Tested on Alpine-Linux with Gitea server)
# > apk add bash jq curl
# > dst='/usr/bin/g2g' ; > $dst && chmod 755 $dst && vi $dst
# > g2g service install
#
# @uninstall :
# > g2g hook uninstall && g2g service uninstall && rm -f /usr/bin/g2g
#
##
#============================================
# Config : #
#============================================
# Enable console messages ? : "true/false".
DEBUG="true"
# Gitea local root path repository.
GITEA_SERVER_ROOT='/var/lib/gitea/git'
GITEA_SERVER_USER='gitea'
GITEA_SERVER_GROUP='www-data'
# Gitea user credential
GITEA_USERNAME=''
GITEA_TOKEN=''
GITEA_BASEURL="https://YOURGITEA.XYZ/api/v1/repos"
# Github user credential
GITHUB_USERNAME=''
GITHUB_TOKEN=''
GITHUB_BASEURL="https://api.github.com/repos/${GITHUB_USERNAME}"
#============================================
# Base fuctions : #
#============================================
e='echo -en'; E='echo -e'
msg() { [ "$DEBUG" == "true" ] && $E " > $1"; }
bye() { $E '***************************' && $E '' && exit 0 ; }
strip() { $e "${1//\"/}";}
gitea_get() {
raw=$($e "$gitea_raw" | jq ".data[0].${1}") # data[] for all entry.
$e "$(strip "$raw")"
}
github_get() {
raw=$($e "$github_raw" | jq ".${1}")
$e "$(strip "$raw")"
}
github_create() {
# https://docs.github.com/en/rest/reference/repos#create-a-repository-for-the-authenticated-user
curl -s -S -X POST -H "Accept: application/vnd.github.v3+json" \
-H "Authorization: token ${GITHUB_TOKEN}" "https://api.github.com/user/repos" \
-d "{
\"name\": \"${gitea_name}\",
\"description\": \"${gitea_description} > Mirror of ${gitea_html_url}\",
\"homepage\": \"${gitea_html_url}\",
\"private\": ${gitea_private},
\"has_issues\": true,
\"has_projects\": false,
\"has_wiki\": false,
\"auto_init\": false
}" > /dev/null
}
github_update() {
# https://docs.github.com/en/rest/reference/repos#update-a-repository
curl -s -S -X PATCH -H "Accept: application/vnd.github.v3+json" \
-H "Authorization: token ${GITHUB_TOKEN}" "${GITHUB_BASEURL}/${gitea_name}" \
-d "{
\"name\": \"${gitea_name}\",
\"description\": \"${gitea_description} > Mirror of ${gitea_html_url}\",
\"homepage\": \"${gitea_html_url}\",
\"private\": ${gitea_private}
}" > /dev/null
}
github_push() {
_root="${GITEA_SERVER_ROOT}/${GITEA_USERNAME,,}/${gitea_name}.git"
if [[ ! "${PWD}" == "${_root}" ]]; then
cd "${_root}" || exit 0
fi
git push --mirror "https://${GITHUB_USERNAME}:${GITHUB_TOKEN}@github.com/${GITHUB_USERNAME}/${gitea_name}.git"
}
#============================================
# Hook : #
#============================================
hook() {
# Install hooks
if [[ "${1}" == "install" ]]; then
dir_list=$(ls -d ${GITEA_SERVER_ROOT}/${GITEA_USERNAME,,}/*/)
for repo in $dir_list; do
if [[ ! "$repo" = *.wiki.git* ]]; then # we dont want the wiki dir.
ddir="${repo}hooks/post-receive.d"
if [[ -d "${ddir}" ]]; then
_file="${ddir}/github_mirror"
hook_raw "${_file}"
chown ${GITEA_SERVER_USER}:${GITEA_SERVER_GROUP} "${_file}"
chmod 755 "${_file}"
fi
fi
done
return 0
fi
# Uninstall hooks
if [[ "${1}" == "uninstall" ]]; then
dir_list=$(ls -d ${GITEA_SERVER_ROOT}/${GITEA_USERNAME,,}/*/)
for repo in $dir_list; do
ddir="${repo}hooks/post-receive.d"
if [[ -d "${ddir}" ]]; then
rm -f "${ddir}/github_mirror"
fi
done
fi
return 0
}
hook_raw() {
sc="${1}"
cat > "${sc}" <<-'EOF'
#!/usr/bin/env bash
command -v g2g >/dev/null 2>&1 || { exit 0; }
name=$(basename "$PWD")
name=${name%.git}
#echo "*** Script executed from: ${PWD}" >&2
#echo "*** Script location: $(dirname $0)" >&2
if [[ -n "$name" ]]; then
g2g mirror "${name,,}" 2>&1
fi
EOF
}
#============================================
# Service : #
#============================================
service() {
# Install service
if [[ "${1}" == "install" ]]; then
service_raw_inst "/etc/periodic/15min/github_mirror_deploy"
service_raw_mirror "/etc/periodic/15min/github_mirror_sync"
return 0
fi
# Uninstall service
if [[ "${1}" == "uninstall" ]]; then
rm -f "/etc/periodic/15min/github_mirror_deploy"
rm -f "/etc/periodic/15min/github_mirror_sync"
return 0
fi
}
# Deploy hook on repo.
service_raw_inst() {
sc="$1"
cat > "${sc}" << 'EOF'
#!/usr/bin/env bash
command -v g2g >/dev/null 2>&1 || { exit 0; }
g2g hook install 2>&1
EOF
chown root:root "${sc}"
chmod 755 "${sc}"
}
# Sync repo each 15min.
service_raw_mirror() {
sc="$1"
cat > "${sc}" << 'EOF'
#!/usr/bin/env bash
command -v g2g >/dev/null 2>&1 || { exit 0; }
key='GITEA_USERNAME='
v=$(grep "${key}" "$(command -v g2g)" | head -n1)
v=${v//$key/''} && v=${v//\"/} && usr=${v//\'/}
key='GITEA_SERVER_ROOT='
v=$(grep "${key}" "$(command -v g2g)" | head -n1)
v=${v//$key/''} && v=${v//\"/} && gpath=${v//\'/}
gpath=$(ls -d ${gpath}/${usr,,}/*/)
for repo in $gpath; do
if [[ ! "$repo" = *.wiki.git* ]]; then
repo="${repo%.git\/}"
g2g mirror "${repo##*/}" 2>&1
fi
done
EOF
chown root:root "${sc}"
chmod 755 "${sc}"
}
#============================================
# Mirror : #
#============================================
mirror() {
$E ''
$E '***************************'
$E '* Gitea 2 Github Hook *'
$E '***************************'
name="${1,,}"
# Get Gitea values for the repo <name> (API).
gitea_raw=$(curl --silent "${GITEA_BASEURL}/search?q=${name}&private=true&token=${GITEA_TOKEN}" -H 'accept: application/json')
gitea_name=$(gitea_get "name")
gitea_name="${gitea_name,,}"
msg "name : ${gitea_name}"
# IF gitea_name not empty AND gitea_name == name.
if [[ -n "$gitea_name" && "$gitea_name" == "$name" ]]; then
gitea_description=$(gitea_get "description")
gitea_html_url=$(gitea_get "html_url")
gitea_private=$(gitea_get "private")
gitea_mirror=$(gitea_get "mirror")
gitea_fork=$(gitea_get "fork")
# We do not want copy Gitea mirror(s) or fork(s) to Github.
if [[ "$gitea_mirror" == "true" || "$gitea_fork" == "true" ]]; then
msg "INFO : Abord clonning (source is a mirror or a fork)"
bye
fi
# debug
msg "description : ${gitea_description}"
msg "url : ${gitea_html_url}"
msg "private : ${gitea_private}"
msg "mirror : ${gitea_mirror}"
msg "fork : ${gitea_fork}"
#
# GITHUB
# (https://docs.github.com/en/rest/reference/repos#get-a-repository--code-samples)
#
# Get Github values for the repo <name> (API).
github_raw=$(curl --silent -H "Authorization: token ${GITHUB_TOKEN}" "${GITHUB_BASEURL}/${gitea_name}")
gh_status=$(github_get "message")
if [[ "$gh_status" == "Bad credentials" ]]; then
msg " ERROR ! : Github : Bad credentials."
bye
fi
if [[ "$gh_status" == "Not Found" ]]; then
msg "Github repo not found: Initialized Creation"
github_create
github_push
bye
fi
if [[ "$gh_status" == "null" ]]; then #TODO update desc/private
msg "Github repo found: Pushing Updates"
github_update
github_push
fi
bye
fi
msg "WARNING ! : Gitea repo not found ! (bad name ?)"
bye
}
#============================================
# Init : #
#============================================
_help() {
$E && $E 'g2g Help :'
msg 'g2g mirror <repo name> : Called by Gitea hooks for mirrorig repo.'
msg 'g2g hook <install/uninstall> : Install/Uninstall githook on every repo founds at <conf:PATH>'
msg 'g2g service <install/uninstall> : Install cron service.'
$E
}
case ${1} in
'mirror') mirror "${2}" ;;
'hook') hook "${2}" ;;
'service') service "${2}" ;;
'help') _help ;;
*) _help ;;
esac
exit 0
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