overleaf/server-ce/init_scripts/00_regen_sharelatex_secrets.sh

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#!/bin/sh
# generate secrets and defines them as environment variables
# https://github.com/phusion/baseimage-docker#centrally-defining-your-own-environment-variables
WEB_API_PASSWORD_FILE=/etc/container_environment/WEB_API_PASSWORD
CRYPTO_RANDOM_FILE=/etc/container_environment/CRYPTO_RANDOM
if [ ! -f "$WEB_API_PASSWORD_FILE" ] || [ ! -f "$CRYPTO_RANDOM_FILE" ]; then
echo "generating random secrets"
SECRET=$(dd if=/dev/urandom bs=1 count=32 2>/dev/null | base64 -w 0 | rev | cut -b 2- | rev | tr -d '\n+/')
echo ${SECRET} > ${WEB_API_PASSWORD_FILE}
SECRET=$(dd if=/dev/urandom bs=1 count=32 2>/dev/null | base64 -w 0 | rev | cut -b 2- | rev | tr -d '\n+/')
echo ${SECRET} > ${CRYPTO_RANDOM_FILE}
fi