bridgehead/lib/prerequisites.sh

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#!/bin/bash
source lib/functions.sh
if ! id "bridgehead" &>/dev/null; then
log ERROR "User bridgehead does not exist. Please consult readme for installation."
exit 1
fi
checkOwner . bridgehead || exit 1
checkOwner /etc/bridgehead bridgehead || exit 1
## Check if user is a su
log INFO "Checking if all prerequisites are met ..."
prerequisites="git docker docker-compose"
for prerequisite in $prerequisites; do
$prerequisite --version 2>&1
is_available=$?
if [ $is_available -gt 0 ]; then
log "ERROR" "Prerequisite not fulfilled - $prerequisite is not available!"
exit 79
fi
# TODO: Check for specific version
done
log INFO "Checking if sudo is installed ..."
if [ ! -d /etc/sudoers.d ]; then
log ERROR "/etc/sudoers.d does not exist. Please install sudo package."
exit 1
fi
log INFO "Checking configuration ..."
## Download submodule
if [ ! -d "/etc/bridgehead/" ]; then
log ERROR "Please set up the config folder at /etc/bridgehead. Instruction are in the readme."
exit 1
fi
# TODO: Check all required variables here in a generic loop
#check if project env is present
if [ -d "/etc/bridgehead/${PROJECT}.conf" ]; then
log ERROR "Project config not found. Please copy the template from ${PROJECT} and put it under /etc/bridgehead-config/${PROJECT}.conf."
exit 1
fi
# TODO: Make sure you're in the right directory, or, even better, be independent from the working directory.
log INFO "Checking ssl cert"
if [ ! -d "certs" ]; then
log WARN "TLS cert missing, we'll now create a self-signed one. Please consider getting an officially signed one (e.g. via Let's Encrypt ...)"
mkdir -p certs
fi
if [ ! -e "certs/traefik.crt" ]; then
openssl req -x509 -newkey rsa:4096 -nodes -keyout certs/traefik.key -out certs/traefik.crt -days 3650 -subj "/CN=$HOST"
fi
if [ -e /etc/bridgehead/vault.conf ]; then
if [ "$(stat -c "%a %U" /etc/bridgehead/vault.conf)" != "600 bridgehead" ]; then
log ERROR "/etc/bridgehead/vault.conf has wrong owner/permissions. To correct this issue, run chmod 600 /etc/bridgehead/vault.conf && chown bridgehead /etc/bridgehead/vault.conf."
exit 1
fi
fi
log INFO "Checking network access ($BROKER_URL) ..."
source /etc/bridgehead/${PROJECT}.conf
source ${PROJECT}/vars
set +e
SERVERTIME=$(https_proxy=$HTTPS_PROXY_URL curl -m 5 -I $BROKER_URL)
if [ $? -ne 0 ]; then
log ERROR "Unable to connect to Samply.Beam broker at $BROKER_URL. Please check your proxy settings."
exit 1
fi
set -e
log INFO "Checking clock skew ..."
SERVERTIME=$(echo $SERVERTIME | grep -i ^Date: | cut -d: -f2- | sed 's/^ *\(.*\).*/\1/')
SERVERTIME_AS_TIMESTAMP=$(date --date="$SERVERTIME" +%s)
MYTIME=$(date +%s)
SKEW=$(($SERVERTIME_AS_TIMESTAMP - $MYTIME))
SKEW=$(echo $SKEW | awk -F- '{print $NF}')
if [ $SKEW -ge 300 ]; then
log ERROR "Your clock is not synchronized (${SKEW}s off). This will cause Samply.Beam's certificate will fail. Please setup time synchronization. For example, consider entering a correct NTP server (e.g. your institution's Active Directory Domain Controller in /etc/systemd/timesyncd.conf (option NTP=) and restart systemd-timesyncd."
exit 1
fi
log INFO "Success - all prerequisites are met!"
exit 0