Script for updating matterbridge

update-matterbridge.sh

#!/bin/sh

if [ $# -eq 0 ]
then
    echo "Usage: update-matterbridge <version>"
    exit 1
fi

VERSION=$1
REPO_URL=https://github.com/42wim/matterbridge
BINARY_NAME=matterbridge-$VERSION-linux-64bit
CHECKSUMS=checksums.txt
CHECKSUMS_ASC=$CHECKSUMS.asc

RELEASES_URL=$REPO_URL/releases/download
VERSION_URL=$RELEASES_URL/v$VERSION
BINARY_URL=$VERSION_URL/$BINARY_NAME
CHECKSUMS_URL=$VERSION_URL/$CHECKSUMS
CHECKSUMS_ASC_URL=$VERSION_URL/$CHECKSUMS_ASC

SIGNING_KEY=CC7D978417C1AEA1E4CDD7240E41AB4BF4C610B4

BINARY_DEST=/opt
LINK_NAME=/usr/local/bin/matterbridge

SERVICE_NAME=matterbridge
SERVICE_USER=bridge

# Check if key is present in gpg store
gpg --batch --list-key $SIGNING_KEY
if [ $? -ne 0 ]
then
    echo "Signing key $SIGNING_KEY not found. Try to receive it."
    gpg --batch --yes --trust-model always --keyserver pgp.mit.edu --recv-keys $SIGNING_KEY
    if [ $? -ne 0 ]
    then
        echo "Could not receive signing key."
        exit 1
    fi
fi

echo "Signing key found."

echo "Fetch checksum files..."
cd $(mktemp -d)
wget -q --show-progress $CHECKSUMS_ASC_URL
wget -q --show-progress $CHECKSUMS_URL

echo "Verify Signature."
gpg --verify ./$CHECKSUMS_ASC ./$CHECKSUMS
if [ $? -ne 0 ]
then
    echo "Invalid Signature!"
    exit 1
fi
echo "Valid Signature!"
echo "Dowload release..."
wget -q --show-progress $BINARY_URL
echo $PWD

sha256sum --ignore-missing -c ./$CHECSUMS
if [ -ne $? ]
then
    echo "Checksum Mismatch!"
    exit 1
fi

echo "Stopping service."
sudo service matterbridge stop

echo "Fix file permissions."
sudo chown $SERVICE_USER $BINARY_NAME
sudo chmod +x $BINARY_NAME

echo "Move new release to $BINARY_DEST."
sudo mv $BINARY_NAME $BINARY_DEST/.

echo "Update link"
sudo ln -sf $BINARY_DEST/$BINARY_NAME $LINK_NAME

echo "Restart service."
sudo service matterbridge start

exit 0