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#!/bin/sh
set -e
# Environment variables that are used if not empty:
# SERVER_NAMES
# LOCATION
# AUTH_TYPE
# REALM
# USERNAME
# PASSWORD
# ANONYMOUS_METHODS
# SSL_CERT
# Just in case this environment variable has gone missing.
HTTPD_PREFIX="${HTTPD_PREFIX:-/usr/local/apache2}"
# Configure vhosts.
if [ "x$SERVER_NAMES" != "x" ]; then
# Use first domain as Apache ServerName.
SERVER_NAME="${SERVER_NAMES%%,*}"
sed -e "s|ServerName .*|ServerName $SERVER_NAME|" \
-i "$HTTPD_PREFIX"/conf/sites-available/default*.conf
# Replace commas with spaces and set as Apache ServerAlias.
SERVER_ALIAS="`printf '%s\n' "$SERVER_NAMES" | tr ',' ' '`"
sed -e "/ServerName/a\ \ ServerAlias $SERVER_ALIAS" \
-i "$HTTPD_PREFIX"/conf/sites-available/default*.conf
fi
# Configure dav.conf
if [ "x$LOCATION" != "x" ]; then
sed -e "s|Alias /|Alias $LOCATION|" \
-i "$HTTPD_PREFIX/conf/conf-available/dav.conf"
fi
if [ "x$REALM" != "x" ]; then
sed -e "s|AuthName .*|AuthName \"$REALM\"|" \
-i "$HTTPD_PREFIX/conf/conf-available/dav.conf"
else
REALM="WebDAV"
fi
if [ "x$AUTH_TYPE" != "x" ]; then
# Only support "Basic" and "Digest".
if [ "$AUTH_TYPE" != "Basic" ] && [ "$AUTH_TYPE" != "Digest" ]; then
printf '%s\n' "$AUTH_TYPE: Unknown AuthType" 1>&2
exit 1
fi
sed -e "s|AuthType .*|AuthType $AUTH_TYPE|" \
-i "$HTTPD_PREFIX/conf/conf-available/dav.conf"
fi
# Add password hash, unless "user.passwd" already exists (ie, bind mounted).
if [ ! -e "/user.passwd" ]; then
touch "/user.passwd"
# Only generate a password hash if both username and password given.
if [ "x$USERNAME" != "x" ] && [ "x$PASSWORD" != "x" ]; then
if [ "$AUTH_TYPE" = "Digest" ]; then
# Can't run `htdigest` non-interactively, so use other tools.
HASH="`printf '%s' "$USERNAME:$REALM:$PASSWORD" | md5sum | awk '{print $1}'`"
printf '%s\n' "$USERNAME:$REALM:$HASH" > /user.passwd
else
htpasswd -B -b -c "/user.passwd" $USERNAME $PASSWORD
fi
fi
fi
# If specified, allow anonymous access to specified methods.
if [ "x$ANONYMOUS_METHODS" != "x" ]; then
if [ "$ANONYMOUS_METHODS" = "ALL" ]; then
sed -e "s/Require valid-user/Require all granted/" \
-i "$HTTPD_PREFIX/conf/conf-available/dav.conf"
else
ANONYMOUS_METHODS="`printf '%s\n' "$ANONYMOUS_METHODS" | tr ',' ' '`"
sed -e "/Require valid-user/a\ \ \ \ Require method $ANONYMOUS_METHODS" \
-i "$HTTPD_PREFIX/conf/conf-available/dav.conf"
fi
fi
# If specified, generate a selfsigned certificate.
if [ "${SSL_CERT:-none}" = "selfsigned" ]; then
# Generate self-signed SSL certificate.
# If SERVER_NAMES is given, use the first domain as the Common Name.
if [ ! -e /privkey.pem ] || [ ! -e /cert.pem ]; then
apk add --no-cache openssl
openssl req -x509 -newkey rsa:2048 -days 1000 -nodes \
-keyout /privkey.pem -out /cert.pem -subj "/CN=${SERVER_NAME:-selfsigned}"
apk del --no-cache openssl
fi
fi
# This will either be the self-signed certificate generated above or one that
# has been bind mounted in by the user.
if [ -e /privkey.pem ] && [ -e /cert.pem ]; then
# Enable SSL Apache modules.
for i in http2 ssl; do
sed -e "/^#LoadModule ${i}_module.*/s/^#//" \
-i "$HTTPD_PREFIX/conf/httpd.conf"
done
# Enable SSL vhost.
ln -sf ../sites-available/default-ssl.conf \
"$HTTPD_PREFIX/conf/sites-enabled"
fi
# Create directories for Dav data and lock database.
mkdir -p "/var/lib/dav/data"
touch "/var/lib/dav/DavLock"
chown -R www-data:www-data "/var/lib/dav"
exec "$@"
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