init
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* 02-14-2022 - Init
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# g2g
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Tested on Alpine-Linux with Gitea server.
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Simple Gitea hook / service who mirroring all your Gitea repo to Github (with git push --mirror).
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Tested only on Alpine-Linux with Gitea server.
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The script requires bash, jq, curl, grep and git.
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This should be easily adapted to other distributions without too many modifications, it should certainly be necessary to modify the location where the cronjob is installed (/etc/periodic/15min) for Debian/Arch/... based system.
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BE VERY CAREFUL !!, if a Github repo already exists with the same name as a Gitea repo but with different content, the whole Github repository will be overwritten !.
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How the hook is triggered :
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- Every 15min, a cronjob install the hook in the repos of the configured <user>.
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- Every 15min, a cronjob launches the synchronization of the whole <user> repo (git push --mirror).
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- When a Gitea depo receives a push, the hook (.hooks/post-receive.d/github_mirror) is triggered and start the synchronization on Github.
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What does the script do :
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- Clone your Gitea repositories on Github.
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- Automatically create a new repository on Github if it does not exist.
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- Synchronize the description.
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- Synchronize the stat (private/public) of the repository.
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What the script doesn't do :
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- Does not manage several different accounts.
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- Do not delete any Github repo (if you delete a Gitea repo, you will have to do it manually on Github).
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- Does not synchronize anything from Github to Gitea.
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(The creation of Github repositories and the retrieval of information from Gitea repositories is done through the official API with curl).
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#### Install
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```
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apk add bash jq curl grep
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chown root:root /usr/bin/g2g
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chmod 755 /usr/bin/g2g
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g2g service install
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```
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#### Uninstall
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```
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g2g hook uninstall
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g2g service uninstall
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rm -f /usr/bin/g2g
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```
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#### Usage
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```
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Manual push (single repo):
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g2g mirror <repo_name>
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Manual push (all repo):
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/etc/periodic/15min/github_mirror_sync
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```
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#!/usr/bin/env bash
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# shellcheck shell=bash
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# ___ __ _ ___ __ _
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# | _ \/__\| |/ / | \| |
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# | v / \/ | <| | | ' |
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# |_|_\\__/|_|\_\_|_|\__|
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#
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# @name : g2g
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# @version : 1.0.0
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# @date : 12/02/2022
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# @description : Gitea to Github : Simple Gitea hook / service who mirroring all your Gitea repo to Github (with git push --mirror).
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# @author : Rokin
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# @contact : git@rokin.in
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# @website : https://git.rokin.in
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#
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# @install : (Tested on Alpine-Linux with Gitea server)
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# > apk add bash jq curl
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# > dst='/usr/bin/g2g' ; > $dst && chmod 755 $dst && vi $dst
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# > g2g service install
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#
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# @uninstall :
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# > g2g hook uninstall && g2g service uninstall && rm -f /usr/bin/g2g
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#
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##
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#============================================
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# Config : #
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#============================================
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# Enable console messages ? : "true/false".
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DEBUG="true"
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# Gitea local root path repository.
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GITEA_SERVER_ROOT='/var/lib/gitea/git'
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GITEA_SERVER_USER='gitea'
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GITEA_SERVER_GROUP='www-data'
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# Gitea user credential
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GITEA_USERNAME=''
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GITEA_TOKEN=''
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GITEA_BASEURL="https://YOURGITEA.XYZ/api/v1/repos"
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# Github user credential
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GITHUB_USERNAME=''
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GITHUB_TOKEN=''
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GITHUB_BASEURL="https://api.github.com/repos/${GITHUB_USERNAME}"
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#============================================
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# Base fuctions : #
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#============================================
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e='echo -en'; E='echo -e'
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msg() { [ "$DEBUG" == "true" ] && $E " > $1"; }
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bye() { $E '***************************' && $E '' && exit 0 ; }
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strip() { $e "${1//\"/}";}
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gitea_get() {
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raw=$($e "$gitea_raw" | jq ".data[0].${1}") # data[] for all entry.
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$e "$(strip "$raw")"
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}
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github_get() {
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raw=$($e "$github_raw" | jq ".${1}")
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$e "$(strip "$raw")"
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}
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github_create() {
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# https://docs.github.com/en/rest/reference/repos#create-a-repository-for-the-authenticated-user
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curl -s -S -X POST -H "Accept: application/vnd.github.v3+json" \
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-H "Authorization: token ${GITHUB_TOKEN}" "https://api.github.com/user/repos" \
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-d "{
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\"name\": \"${gitea_name}\",
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\"description\": \"${gitea_description} > Mirror of ${gitea_html_url}\",
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\"homepage\": \"${gitea_html_url}\",
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\"private\": ${gitea_private},
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\"has_issues\": true,
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\"has_projects\": false,
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\"has_wiki\": false,
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\"auto_init\": false
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}" > /dev/null
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}
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github_update() {
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# https://docs.github.com/en/rest/reference/repos#update-a-repository
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curl -s -S -X PATCH -H "Accept: application/vnd.github.v3+json" \
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-H "Authorization: token ${GITHUB_TOKEN}" "${GITHUB_BASEURL}/${gitea_name}" \
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-d "{
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\"name\": \"${gitea_name}\",
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\"description\": \"${gitea_description} > Mirror of ${gitea_html_url}\",
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\"homepage\": \"${gitea_html_url}\",
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\"private\": ${gitea_private}
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}" > /dev/null
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}
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github_push() {
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_root="${GITEA_SERVER_ROOT}/${GITEA_USERNAME,,}/${gitea_name}.git"
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if [[ ! "${PWD}" == "${_root}" ]]; then
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cd "${_root}" || exit 0
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fi
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git push --mirror "https://${GITHUB_USERNAME}:${GITHUB_TOKEN}@github.com/${GITHUB_USERNAME}/${gitea_name}.git"
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}
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#============================================
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# Hook : #
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#============================================
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hook() {
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# Install hooks
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if [[ "${1}" == "install" ]]; then
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dir_list=$(ls -d ${GITEA_SERVER_ROOT}/${GITEA_USERNAME,,}/*/)
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for repo in $dir_list; do
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if [[ ! "$repo" = *.wiki.git* ]]; then # we dont want the wiki dir.
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ddir="${repo}hooks/post-receive.d"
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if [[ -d "${ddir}" ]]; then
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_file="${ddir}/github_mirror"
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hook_raw "${_file}"
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chown ${GITEA_SERVER_USER}:${GITEA_SERVER_GROUP} "${_file}"
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chmod 755 "${_file}"
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fi
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fi
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done
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return 0
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fi
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# Uninstall hooks
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if [[ "${1}" == "uninstall" ]]; then
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dir_list=$(ls -d ${GITEA_SERVER_ROOT}/${GITEA_USERNAME,,}/*/)
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for repo in $dir_list; do
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ddir="${repo}hooks/post-receive.d"
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if [[ -d "${ddir}" ]]; then
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rm -f "${ddir}/github_mirror"
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fi
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done
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fi
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return 0
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}
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hook_raw() {
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sc="${1}"
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cat > "${sc}" <<-'EOF'
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#!/usr/bin/env bash
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command -v g2g >/dev/null 2>&1 || { exit 0; }
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name=$(basename "$PWD")
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name=${name%.git}
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#echo "*** Script executed from: ${PWD}" >&2
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#echo "*** Script location: $(dirname $0)" >&2
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if [[ -n "$name" ]]; then
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g2g mirror "${name,,}" 2>&1
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fi
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EOF
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}
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#============================================
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# Service : #
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#============================================
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service() {
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# Install service
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if [[ "${1}" == "install" ]]; then
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service_raw_inst "/etc/periodic/15min/github_mirror_deploy"
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service_raw_mirror "/etc/periodic/15min/github_mirror_sync"
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return 0
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fi
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# Uninstall service
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if [[ "${1}" == "uninstall" ]]; then
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rm -f "/etc/periodic/15min/github_mirror_deploy"
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rm -f "/etc/periodic/15min/github_mirror_sync"
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return 0
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fi
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}
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# Deploy hook on repo.
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service_raw_inst() {
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sc="$1"
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cat > "${sc}" << 'EOF'
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#!/usr/bin/env bash
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command -v g2g >/dev/null 2>&1 || { exit 0; }
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g2g hook install 2>&1
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EOF
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chown root:root "${sc}"
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chmod 755 "${sc}"
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}
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# Sync repo each 15min.
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service_raw_mirror() {
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sc="$1"
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cat > "${sc}" << 'EOF'
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#!/usr/bin/env bash
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command -v g2g >/dev/null 2>&1 || { exit 0; }
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key='GITEA_USERNAME='
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v=$(grep "${key}" "$(command -v g2g)" | head -n1)
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v=${v//$key/''} && v=${v//\"/} && usr=${v//\'/}
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key='GITEA_SERVER_ROOT='
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v=$(grep "${key}" "$(command -v g2g)" | head -n1)
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v=${v//$key/''} && v=${v//\"/} && gpath=${v//\'/}
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gpath=$(ls -d ${gpath}/${usr,,}/*/)
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for repo in $gpath; do
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if [[ ! "$repo" = *.wiki.git* ]]; then
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repo="${repo%.git\/}"
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g2g mirror "${repo##*/}" 2>&1
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fi
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done
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EOF
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chown root:root "${sc}"
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chmod 755 "${sc}"
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}
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#============================================
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# Mirror : #
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#============================================
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mirror() {
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$E ''
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$E '***************************'
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$E '* Gitea 2 Github Hook *'
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$E '***************************'
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name="${1,,}"
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# Get Gitea values for the repo <name> (API).
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gitea_raw=$(curl --silent "${GITEA_BASEURL}/search?q=${name}&private=true&token=${GITEA_TOKEN}" -H 'accept: application/json')
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gitea_name=$(gitea_get "name")
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gitea_name="${gitea_name,,}"
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msg "name : ${gitea_name}"
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# IF gitea_name not empty AND gitea_name == name.
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if [[ -n "$gitea_name" && "$gitea_name" == "$name" ]]; then
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gitea_description=$(gitea_get "description")
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gitea_html_url=$(gitea_get "html_url")
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gitea_private=$(gitea_get "private")
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gitea_mirror=$(gitea_get "mirror")
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gitea_fork=$(gitea_get "fork")
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# We do not want copy Gitea mirror(s) or fork(s) to Github.
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if [[ "$gitea_mirror" == "true" || "$gitea_fork" == "true" ]]; then
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msg "INFO : Abord clonning (source is a mirror or a fork)"
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bye
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fi
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# debug
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msg "description : ${gitea_description}"
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msg "url : ${gitea_html_url}"
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msg "private : ${gitea_private}"
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msg "mirror : ${gitea_mirror}"
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msg "fork : ${gitea_fork}"
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#
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# GITHUB
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# (https://docs.github.com/en/rest/reference/repos#get-a-repository--code-samples)
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#
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# Get Github values for the repo <name> (API).
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github_raw=$(curl --silent -H "Authorization: token ${GITHUB_TOKEN}" "${GITHUB_BASEURL}/${gitea_name}")
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gh_status=$(github_get "message")
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if [[ "$gh_status" == "Bad credentials" ]]; then
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msg " ERROR ! : Github : Bad credentials."
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bye
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fi
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if [[ "$gh_status" == "Not Found" ]]; then
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msg "Github repo not found: Initialized Creation"
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github_create
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github_push
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bye
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fi
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if [[ "$gh_status" == "null" ]]; then #TODO update desc/private
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msg "Github repo found: Pushing Updates"
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github_update
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github_push
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fi
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bye
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fi
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msg "WARNING ! : Gitea repo not found ! (bad name ?)"
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bye
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}
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#============================================
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# Init : #
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#============================================
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_help() {
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$E && $E 'g2g Help :'
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msg 'g2g mirror <repo name> : Called by Gitea hooks for mirrorig repo.'
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msg 'g2g hook <install/uninstall> : Install/Uninstall githook on every repo founds at <conf:PATH>'
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msg 'g2g service <install/uninstall> : Install cron service.'
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$E
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}
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case ${1} in
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'mirror') mirror "${2}" ;;
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'hook') hook "${2}" ;;
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'service') service "${2}" ;;
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'help') _help ;;
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*) _help ;;
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esac
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exit 0
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