setup-pbuilder-repo

#!/bin/bash
# Setup wrouesnel style pbuilder configuration for quick and easy automatic
# builds.
# See: https://stackoverflow.com/questions/59895/how-to-get-the-source-directory-of-a-bash-script-from-within-the-script-itself
# Note: you can't refactor this out: its at the top of every script so the scripts can find their includes.
SOURCE="${BASH_SOURCE[0]}"
while [ -h "$SOURCE" ]; do # resolve $SOURCE until the file is no longer a symlink
  DIR="$( cd -P "$( dirname "$SOURCE" )" >/dev/null 2>&1 && pwd )"
  SOURCE="$(readlink "$SOURCE")"
  [[ $SOURCE != /* ]] && SOURCE="$DIR/$SOURCE" # if $SOURCE was a relative symlink, we need to resolve it relative to the path where the symlink file was located
done
SCRIPT_DIR="$( cd -P "$( dirname "$SOURCE" )" >/dev/null 2>&1 && pwd )"

function log() {
  echo "$*" 1>&2
}

function fatal() {
  echo "$*" 1>&2
  exit 1
}

PBUILDER_REPO="$HOME/pbuilder/repo"
PBUILDER_HOOKS="$HOME/pbuilder/hooks"
PBUILDER_CACHE="$HOME/.cache/pbuilder"

PBUILDER_GPG="$HOME/pbuilder/repo/gpg"

mkdir -p "$PBUILDER_REPO"
mkdir -p "$PBUILDER_HOOKS"

gpg_args=(\
    --no-options \
    --no-default-keyring \
    --homedir "$PBUILDER_GPG" \
    --keyring "$PBUILDER_REPO/pbuilder-public.gpg" \
    --trustdb-name "$PBUILDER_REPO/trustdb.gpg" \
)

if [ ! -e "$PBUILDER_REPO/pbuilder-public.gpg" ]; then
    echo "Generating a key for use as signing..."
    gpg "${gpg_args[@]}" --gen-key
fi

echo "Installing the new key as a trusted key in the users keyring..."
gpg "${gpg_args[@]}" \
    --export-secret-keys \
    --armor | gpg --allow-secret-key-import --import --no-options

echo "Installing $1 as trusted key in apt..."
gpg "${gpg_args[@]}" --export | sudo tee /etc/apt/trusted.gpg.d/pbuilder.gpg >/dev/null

echo "Setting up a trustedkeys.gpg keyring"

echo "Making pbuilder repository directory..."
if ! cp -r pbuilder-repo/* "$PBUILDER_REPO/" ; then
    fatal "Error setting up repository base"
fi

echo "Setting up pbuilder hooks..."
mkdir -p "$PBUILDER_HOOKS"
if ! cp -t "$PBUILDER_HOOKS" "${SCRIPT_DIR}/.pbuilder-hooks"/*; then
    fatal "Error setting up pbuilder hooks"
fi

echo "Installing .pbuilderrc..."
if ! cp "${SCRIPT_DIR}/.pbuilderrc" "$HOME/.pbuilderrc"; then
    fatal "Error setting up pbuilderrc"
fi

echo "Your new pbuilder keys are the following:"
gpg "${gpg_args[@]}" --list-keys

read -r -p "Would you like to install the included .pbuilderrc file? (y/n default NO)" ANSWER
if [[ $ANSWER =~ ^[Yy]$ ]]; then
    echo "Installing to $HOME/.pbuilderrc..."
    if [ -e "$HOME/.pbuilderrc" ]; then
        echo "Backing up existing .pbuilderrc as .pbuilderrc.$(date +%Y%m%d%H%M%S).bak"
        mv "$HOME/.pbuilderrc" "$HOME/.pbuilderrc.$(date +%Y%m%d%H%M%S).bak"
    fi
    cp "${SCRIPT_DIR}/.pbuilderrc" "$HOME/.pbuilderrc" || fatal "Could not copy .pbuilderrc"
fi

log "Installing the pbuilder override command to ensure correct execution"
if ! cp -f "${SCRIPT_DIR}/pbuilder" "$HOME/bin/pbuilder"; then
    fatal "Failed to copy local pbuilder command"
fi

if ! chmod +x "$HOME/bin/pbuilder"; then
    fatal "Failed to make local pbuilder command executable"
fi

exit 0