get_apns_tools.sh

#!/bin/bash

set -e

APNS_TOOLS_REPO=https://github.com/SilentCircle/apns_tools.git

die() {
    echo $* >&2
    exit 1
}

upstream_changed() {
    remote_commit=$(git rev-parse 'FETCH_HEAD^{commit}')
    echo "apns_tools remote commit: $remote_commit"
    local_commit=$(git rev-parse 'refs/heads/master^{commit}')
    echo "apns_tools local commit:  $local_commit"
    test $local_commit != $remote_commit
}

get_tools() {
    mkdir -p tools
    pushd tools > /dev/null 2>&1

    if [[ -d apns_tools ]]; then
        cd apns_tools
        git checkout -q master
        git fetch -q origin master
        if upstream_changed; then
            git merge --ff FETCH_HEAD
            upstream_did_change=true
        else
            upstream_did_change=false
        fi
    else
        upstream_did_change=true
        git clone ${APNS_TOOLS_REPO}
        cd apns_tools
        git checkout -q master
    fi

    popd > /dev/null 2>&1
    echo "Upstream changed: $upstream_did_change"
    $upstream_did_change
}

generate_new_certs() {
    local rc=0

    pushd tools/apns_tools > /dev/null 2>&1
    ./fake_apple_certs.sh
    rc=$?
    popd > /dev/null 2>&1
    return $rc
}

if get_tools; then
    generate_new_certs || die "Error generating new certs"
fi