134 lines
4.2 KiB
Bash
Executable File
134 lines
4.2 KiB
Bash
Executable File
#!/bin/bash
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# _____ _ _
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# | __|___ ___ ___ _| |___ _____| |_ ___ ___ ___
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# | __| _| -_| -_| . | . | | . | . | | -_|
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# |__| |_| |___|___|___|___|_|_|_|___|___|_|_|___|
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#
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# Freedom in the Cloud
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#
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# Performs certificate pinning (HPKP) on a given domain name
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# License
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# =======
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#
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# Copyright (C) 2015-2018 Bob Mottram <bob@freedombone.net>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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PROJECT_NAME='freedombone'
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export TEXTDOMAIN=${PROJECT_NAME}-pin-cert
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export TEXTDOMAINDIR="/usr/share/locale"
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WEBSITES_DIRECTORY=/etc/nginx/sites-available
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# 90 days
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PIN_MAX_AGE=7776000
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function pin_all_certs {
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if [ ! -d $WEBSITES_DIRECTORY ]; then
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return
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fi
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cd $WEBSITES_DIRECTORY || exit 2468724684
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for file in $(dir -d "*") ; do
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if grep -q "Public-Key-Pins" "$file"; then
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DOMAIN_NAME=$file
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KEY_FILENAME=/etc/ssl/private/${DOMAIN_NAME}.key
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if [ -f "$KEY_FILENAME" ]; then
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BACKUP_KEY_FILENAME=/etc/ssl/certs/${DOMAIN_NAME}.pem
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if [ -f "$BACKUP_KEY_FILENAME" ]; then
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KEY_HASH=$(openssl rsa -in "$KEY_FILENAME" -outform der -pubout | openssl dgst -sha256 -binary | openssl enc -base64)
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BACKUP_KEY_HASH=$(openssl rsa -in "$BACKUP_KEY_FILENAME" -outform der -pubout | openssl dgst -sha256 -binary | openssl enc -base64)
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if [ ${#BACKUP_KEY_HASH} -gt 5 ]; then
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PIN_HEADER="Public-Key-Pins 'pin-sha256=\"${KEY_HASH}\"; pin-sha256=\"${BACKUP_KEY_HASH}\"; max-age=${PIN_MAX_AGE}; includeSubDomains';"
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sed -i "s|Public-Key-Pins.*|${PIN_HEADER}|g" "$file"
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echo $"Pinned $DOMAIN_NAME with keys $KEY_HASH $BACKUP_KEY_HASH"
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fi
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fi
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fi
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fi
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done
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}
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if [[ "$1" == "all" ]]; then
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pin_all_certs
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systemctl restart nginx
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exit 0
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fi
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DOMAIN_NAME=$1
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REMOVE=$2
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KEY_FILENAME=/etc/ssl/private/${DOMAIN_NAME}.key
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BACKUP_KEY_FILENAME=/etc/ssl/certs/${DOMAIN_NAME}.pem
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SITE_FILENAME=$WEBSITES_DIRECTORY/${DOMAIN_NAME}
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if [ ! "${DOMAIN_NAME}" ]; then
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exit 0
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fi
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if [ ! -f "$SITE_FILENAME" ]; then
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exit 0
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fi
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if [[ $REMOVE == "remove" ]]; then
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if grep -q "Public-Key-Pins" "$SITE_FILENAME"; then
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sed -i "/Public-Key-Pins/d" "$SITE_FILENAME"
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echo $"Removed pinning for ${DOMAIN_NAME}"
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systemctl restart nginx
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fi
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exit 0
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fi
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if [ ! -f "$KEY_FILENAME" ]; then
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echo $"No private key certificate found for $DOMAIN_NAME"
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exit 1
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fi
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if [ ! -f "$BACKUP_KEY_FILENAME" ]; then
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echo $"No fullchain certificate found for $DOMAIN_NAME"
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exit 2
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fi
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KEY_HASH=$(openssl rsa -in "$KEY_FILENAME" -outform der -pubout | openssl dgst -sha256 -binary | openssl enc -base64)
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BACKUP_KEY_HASH=$(openssl rsa -in "$BACKUP_KEY_FILENAME" -outform der -pubout | openssl dgst -sha256 -binary | openssl enc -base64)
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if [ ${#KEY_HASH} -lt 5 ]; then
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echo 'Pin hash unexpectedly short'
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exit 3
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fi
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if [ ${#BACKUP_KEY_HASH} -lt 5 ]; then
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echo 'Backup pin hash unexpectedly short'
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exit 4
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fi
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PIN_HEADER="Public-Key-Pins 'pin-sha256=\"${KEY_HASH}\"; pin-sha256=\"${BACKUP_KEY_HASH}\"; max-age=5184000; includeSubDomains';"
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if ! grep -q "Public-Key-Pins" "$SITE_FILENAME"; then
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sed -i "/ssl_ciphers.*/a add_header ${PIN_HEADER}" "$SITE_FILENAME"
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else
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sed -i "s|Public-Key-Pins.*|${PIN_HEADER}|g" "$SITE_FILENAME"
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fi
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systemctl restart nginx
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if ! grep -q "add_header Public-Key-Pins" "$SITE_FILENAME"; then
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echo $'Pinning failed'
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fi
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echo "Pinned $DOMAIN_NAME with keys $KEY_HASH $BACKUP_KEY_HASH"
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exit 0
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