commit eab1b231323b2a9479aea12ec61118e7fb47e959
Author: snow flurry <snow@datagirl.xyz>
Date:   Wed Oct 27 17:28:24 2021 -0700

    Initial commit

diff --git a/README.md b/README.md
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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
+```
diff --git a/gitea-update b/gitea-update
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+++ b/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."
+