zulip/scripts/setup/generate-self-signed-certs

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#!/usr/bin/env bash
set -e
if [ "$EUID" -ne 0 ]; then
echo "Error: This script must be run as root" >&2
exit 1
fi
if [ -z "${1:-}" ]; then
echo "Usage: $0 <Zulip server name>" >&2
exit 1
fi
SERVER_NAME="$1"
echo "Executing certificates configuration..."
if [ ! -e /etc/ssl/private/zulip.key ] && [ ! -e /etc/ssl/certs/zulip.combined-chain.crt ]; then
echo "SSL certificates for Zulip not found in /etc/ssl/."
echo "Autogenerating certificates ..."
apt-get install -y openssl
openssl genrsa -des3 -passout pass:x -out /tmp/server.pass.key 4096
openssl rsa -passin pass:x -in /tmp/server.pass.key -out /etc/ssl/private/zulip.key
openssl req -new -nodes -subj "/O=$SERVER_NAME" -key /etc/ssl/private/zulip.key -out /tmp/server.csr
openssl x509 -req -days 365 -in /tmp/server.csr -signkey /etc/ssl/private/zulip.key -out /etc/ssl/certs/zulip.combined-chain.crt
rm -f /tmp/server.csr /tmp/server.pass.key
echo "Generated new self-signed SSL certificates for Zulip."
else
echo "SSL certificates for Zulip already exist in /etc/ssl/. Skipping."
fi
echo "SSL certificate configuration succeeded."