294 lines
8.3 KiB
Bash
Executable file
294 lines
8.3 KiB
Bash
Executable file
#!/bin/bash
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# shellcheck disable=SC2292 # allow [ test ] syntax
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# shellcheck disable=SC2310 # allow "if function..." syntax with -e
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set -e
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shopt -s inherit_errexit
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#- HELPER FUNCTIONS ----------------#
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istrue() {
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case "$(echo "$1" | tr '[:upper:]' '[:lower:]')" in
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true) return 0 ;;
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*) return 1 ;;
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esac
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}
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isfalse() {
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if istrue "$1"; then
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return 1
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else
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return 0
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fi
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}
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# generate a yaml list from a comma-separated string of values
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csv2yaml() {
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[ -z "$1" ] && return
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echo "$1" | sed 's/,/\n- /g;s/^/- /g'
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}
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# wrap cscli with the correct config file location
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cscli() {
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command cscli -c "$CONFIG_FILE" "$@"
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}
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conf_get() {
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if [ $# -ge 2 ]; then
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yq e "$1" "$2"
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else
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yq e "$1" "$CONFIG_FILE"
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fi
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}
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conf_set() {
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if [ $# -ge 2 ]; then
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yq e "$1" -i "$2"
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else
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yq e "$1" -i "$CONFIG_FILE"
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fi
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}
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#-----------------------------------#
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# Check and prestage databases
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for geodb in GeoLite2-ASN.mmdb GeoLite2-City.mmdb; do
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# We keep the pre-populated geoip databases in /staging instead of /var,
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# because if the data directory is bind-mounted from the host, it will be
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# empty and the files will be out of reach, requiring a runtime download.
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# We link to them to save about 80Mb compared to cp/mv.
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if [ ! -e "/var/lib/crowdsec/data/$geodb" ] && [ -e "/staging/var/lib/crowdsec/data/$geodb" ]; then
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mkdir -p /var/lib/crowdsec/data
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ln -s "/staging/var/lib/crowdsec/data/$geodb" /var/lib/crowdsec/data/
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fi
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done
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# Check and prestage /etc/crowdsec
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if [ ! -e "/etc/crowdsec/local_api_credentials.yaml" ] && [ ! -e "/etc/crowdsec/config.yaml" ]; then
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echo "Populating configuration directory..."
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# don't overwrite existing configuration files, which may come
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# from bind-mount or even be read-only (configmaps)
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if [ -e /staging/etc/crowdsec ]; then
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mkdir -p /etc/crowdsec/
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# if you change this, check that it still works
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# under alpine and k8s, with and without tls
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cp -an /staging/etc/crowdsec/* /etc/crowdsec/
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fi
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fi
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# do this as soon as we have a config.yaml, to avoid useless warnings
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if istrue "$USE_WAL"; then
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conf_set '.db_config.use_wal = true'
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elif [ -n "$USE_WAL" ] && isfalse "$USE_WAL"; then
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conf_set '.db_config.use_wal = false'
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fi
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# regenerate local agent credentials (ignore if agent is disabled)
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if isfalse "$DISABLE_AGENT"; then
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if isfalse "$DISABLE_LOCAL_API"; then
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echo "Regenerate local agent credentials"
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cscli machines delete "$CUSTOM_HOSTNAME" 2>/dev/null || true
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# shellcheck disable=SC2086
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cscli machines add "$CUSTOM_HOSTNAME" --auto --url "$LOCAL_API_URL"
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fi
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lapi_credentials_path=$(conf_get '.api.client.credentials_path')
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if istrue "$USE_TLS"; then
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install -m 0600 /dev/null "$lapi_credentials_path"
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conf_set '
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.url = strenv(LOCAL_API_URL) |
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.ca_cert_path = strenv(CACERT_FILE) |
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.key_path = strenv(KEY_FILE) |
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.cert_path = strenv(CERT_FILE)
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' "$lapi_credentials_path"
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elif [ "$AGENT_USERNAME" != "" ]; then
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install -m 0600 /dev/null "$lapi_credentials_path"
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conf_set '
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.url = strenv(LOCAL_API_URL) |
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.login = strenv(AGENT_USERNAME) |
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.password = strenv(AGENT_PASSWORD)
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' "$lapi_credentials_path"
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fi
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fi
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if isfalse "$DISABLE_LOCAL_API"; then
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echo "Check if lapi needs to automatically register an agent"
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# pre-registration is not needed with TLS
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if isfalse "$USE_TLS" && [ "$AGENT_USERNAME" != "" ] && [ "$AGENT_PASSWORD" != "" ] ; then
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# shellcheck disable=SC2086
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cscli machines add "$AGENT_USERNAME" --password "$AGENT_PASSWORD" --url "$LOCAL_API_URL"
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echo "Agent registered to lapi"
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fi
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fi
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# registration to online API for signal push
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if isfalse "$DISABLE_ONLINE_API" && [ "$CONFIG_FILE" == "/etc/crowdsec/config.yaml" ] ; then
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config_exists=$(conf_get '.api.server.online_client | has("credentials_path")')
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if isfalse "$config_exists"; then
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conf_set '.api.server.online_client = {"credentials_path": "/etc/crowdsec/online_api_credentials.yaml"}'
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cscli capi register > /etc/crowdsec/online_api_credentials.yaml
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echo "Registration to online API done"
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fi
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fi
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# Enroll instance if enroll key is provided
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if isfalse "$DISABLE_ONLINE_API" && [ "$ENROLL_KEY" != "" ]; then
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enroll_args=""
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if [ "$ENROLL_INSTANCE_NAME" != "" ]; then
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enroll_args="--name $ENROLL_INSTANCE_NAME"
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fi
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if [ "$ENROLL_TAGS" != "" ]; then
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# shellcheck disable=SC2086
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for tag in ${ENROLL_TAGS}; do
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enroll_args="$enroll_args --tags $tag"
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done
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fi
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# shellcheck disable=SC2086
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cscli console enroll $enroll_args "$ENROLL_KEY"
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fi
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# crowdsec sqlite database permissions
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if [ "$GID" != "" ]; then
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if istrue "$(conf_get '.db_config.type == "sqlite"')"; then
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chown ":$GID" "$(conf_get '.db_config.db_path')"
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echo "sqlite database permissions updated"
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fi
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fi
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if istrue "$USE_TLS"; then
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agents_allowed_yaml=$(csv2yaml "$AGENTS_ALLOWED_OU") \
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bouncers_allowed_yaml=$(csv2yaml "$BOUNCERS_ALLOWED_OU") \
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conf_set '
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.api.server.tls.ca_cert_path = strenv(CACERT_FILE) |
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.api.server.tls.cert_file = strenv(CERT_FILE) |
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.api.server.tls.key_file = strenv(KEY_FILE) |
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.api.server.tls.bouncers_allowed_ou = env(bouncers_allowed_yaml) |
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.api.server.tls.agents_allowed_ou = env(agents_allowed_yaml) |
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... comments=""
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'
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fi
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conf_set ".config_paths.plugin_dir = strenv(PLUGIN_DIR)"
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## Install collections, parsers, scenarios & postoverflows
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cscli hub update
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cscli collections upgrade crowdsecurity/linux || true
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cscli parsers upgrade crowdsecurity/whitelists || true
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cscli parsers install crowdsecurity/docker-logs || true
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if [ "$COLLECTIONS" != "" ]; then
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# shellcheck disable=SC2086
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cscli collections install $COLLECTIONS
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fi
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if [ "$PARSERS" != "" ]; then
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# shellcheck disable=SC2086
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cscli parsers install $PARSERS
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fi
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if [ "$SCENARIOS" != "" ]; then
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# shellcheck disable=SC2086
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cscli scenarios install $SCENARIOS
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fi
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if [ "$POSTOVERFLOWS" != "" ]; then
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# shellcheck disable=SC2086
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cscli postoverflows install $POSTOVERFLOWS
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fi
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## Remove collections, parsers, scenarios & postoverflows
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if [ "$DISABLE_COLLECTIONS" != "" ]; then
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# shellcheck disable=SC2086
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cscli collections remove $DISABLE_COLLECTIONS
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fi
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if [ "$DISABLE_PARSERS" != "" ]; then
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# shellcheck disable=SC2086
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cscli parsers remove $DISABLE_PARSERS
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fi
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if [ "$DISABLE_SCENARIOS" != "" ]; then
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# shellcheck disable=SC2086
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cscli scenarios remove $DISABLE_SCENARIOS
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fi
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if [ "$DISABLE_POSTOVERFLOWS" != "" ]; then
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# shellcheck disable=SC2086
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cscli postoverflows remove $DISABLE_POSTOVERFLOWS
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fi
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register_bouncer() {
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if ! cscli bouncers list -o json | sed '/^ *"name"/!d;s/^ *"name": "\(.*\)",/\1/' | grep -q "^${NAME}$"; then
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if cscli bouncers add "${NAME}" -k "${KEY}" > /dev/null; then
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echo "Registered bouncer for ${NAME}"
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else
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echo "Failed to register bouncer for ${NAME}"
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fi
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fi
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}
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## Register bouncers via env
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for BOUNCER in $(compgen -A variable | grep -i BOUNCER_KEY); do
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KEY=$(printf '%s' "${!BOUNCER}")
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NAME=$(printf '%s' "$BOUNCER" | cut -d_ -f3-)
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if [[ -n $KEY ]] && [[ -n $NAME ]]; then
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register_bouncer
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fi
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done
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## Register bouncers via secrets
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shopt -s nullglob extglob
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for BOUNCER in /run/secrets/@(bouncer_key|BOUNCER_KEY)* ; do
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KEY=$(cat "${BOUNCER}")
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NAME=$(echo "${BOUNCER}" | awk -F "/" '{printf $NF}' | cut -d_ -f2-)
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if [[ -n $KEY ]] && [[ -n $NAME ]]; then
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register_bouncer
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fi
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done
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shopt -u nullglob extglob
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ARGS=""
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if [ "$CONFIG_FILE" != "" ]; then
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ARGS="-c $CONFIG_FILE"
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fi
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if [ "$DSN" != "" ]; then
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ARGS="$ARGS -dsn ${DSN}"
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fi
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if [ "$TYPE" != "" ]; then
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ARGS="$ARGS -type $TYPE"
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fi
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if istrue "$TEST_MODE"; then
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ARGS="$ARGS -t"
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fi
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if istrue "$DISABLE_AGENT"; then
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ARGS="$ARGS -no-cs"
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fi
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if istrue "$DISABLE_LOCAL_API"; then
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ARGS="$ARGS -no-api"
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fi
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if istrue "$LEVEL_TRACE"; then
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ARGS="$ARGS -trace"
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fi
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if istrue "$LEVEL_DEBUG"; then
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ARGS="$ARGS -debug"
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fi
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if istrue "$LEVEL_INFO"; then
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ARGS="$ARGS -info"
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fi
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conf_set '.prometheus.listen_port=env(METRICS_PORT)'
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# shellcheck disable=SC2086
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exec crowdsec $ARGS
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