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snow flurry 2021-10-27 17:28:24 -07:00
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# gitea-update
Automatic Gitea update script for Linux, using the Github releases API.
## Requirements
* POSIX /bin/sh
* jq
* basename
## How to use
```
$ ./gitea-update
```

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#!/bin/sh
RELEASE_API="https://api.github.com/repos/go-gitea/gitea/releases/latest"
DEFAULT_ARCH="linux-amd64"
GITEA_PATH="/usr/local/bin/gitea"
GITEA_VAR="/var/lib/gitea"
info() {
echo "[INFO] $1"
}
debug() {
if [ -n "$GU_DEBUG" ] ; then
echo "[DEBUG] $1"
fi
}
die() {
echo "[FATAL] $1" >&2
if [ -n "${tmpdir}" ] && [ -d "${tmpdir}" ] ; then
rm -r "${tmpdir}"
fi
exit 1
}
prompt() {
while true ; do
printf "%s [y/n] " "$1"
read -r yesno
case $yesno in
[Yy])
return 0 # true
;;
[Nn])
return 1 # false
;;
*)
echo "Please respond with \`y' or \`n'."
;;
esac
done
}
download() {
fname="$(basename "$1")"
info "Getting $fname..."
curl -sLo "${tmpdir}/$fname" "$1" || die "Unable to download $fname"
}
parse_binlink() {
jq -r ".assets[] | select(.name | endswith(\"$DEFAULT_ARCH\")) | .browser_download_url" < "$1"
}
# gather data...
tmpdir="${TMP:-/tmp}/gitea-update"
backupdir="/opt/gitea.bak"
release_file="$tmpdir/reldata"
mkdir -p "$tmpdir"
curl -s "$RELEASE_API" > "$tmpdir/reldata" || die "Unable to get Gitea release information"
binary_link="$(parse_binlink "$release_file")" || die "Unable to get Gitea binary URL"
debug "link: $binary_link"
hash_link="${binary_link}.sha256"
# gpg_link="${binary_link}.asc"
new_ver="$(jq -r ".name" < "$release_file")"
old_ver="$(/usr/local/bin/gitea --version | awk 'match($0, /version ([0-9.]+) /,ver) { print ver[1] }')"
if [ "v$old_ver" = "$new_ver" ] ; then
echo "No update available."
exit
fi
echo "Gitea update available! New version is $new_ver, we're currently on v$old_ver."
prompt "Update to $new_ver?" || exit
## Gather the files!
download "$binary_link"
download "$hash_link"
# TODO: gpg_link
info "Confirming hash matches binary file..."
(
cd "$tmpdir" &&
sha256sum -c "$(basename "$hash_link")"
) || die "SHA-256 checksum of gitea executable didn't match!"
info "Stopping Gitea..."
info "Backing everything up..."
sudo mkdir -p "$backupdir/bin" "$backupdir/var.lib" "$backupdir/etc"
sudo cp "$GITEA_PATH" "$backupdir/bin/gitea-$old_ver" || die "Backup of binary failed!"
sudo cp -a "$GITEA_VAR" "$backupdir/var.lib/gitea-$old_ver" || die "Backup of /var/lib/gitea folder failed!"
sudo cp -a "/etc/gitea" "$backupdir/etc/gitea-$old_ver" || die "Backup of /etc/gitea folder failed!"
info "Stopping Gitea and performing the install!!"
sudo systemctl stop gitea || die "Unable to stop gitea!"
sudo mv "$tmpdir/$(basename "$binary_link")" "$GITEA_PATH" || die "Unable to move new gitea!"
sudo chown root:root "$GITEA_PATH"
sudo chmod 0755 "$GITEA_PATH"
info "Upgrade complete, restarting Gitea..."
sudo systemctl start gitea || die "Unable to start gitea!"
info "Last minute cleanup..."
rm -r "$tmpdir"
info "Process done. Gitea should be available momentary."