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223 lines
5.7 KiB
223 lines
5.7 KiB
#!/bin/sh /etc/rc.common
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USE_PROCD=1
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START=25
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extra_command "uciadd" "<interface> <device> <zone> Add docker bridge configuration to network and firewall uci config"
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extra_command "ucidel" "<interface> <device> <zone> Delete docker bridge configuration from network and firewall uci config"
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DOCKER_CONF_DIR="/tmp/dockerd"
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DOCKERD_CONF="${DOCKER_CONF_DIR}/daemon.json"
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uci_quiet() {
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uci -q "${@}" >/dev/null
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}
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json_add_array_string() {
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json_add_string "" "${1}"
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}
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boot() {
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uciadd
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rc_procd start_service
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}
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uciadd() {
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local iface="$1"
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local device="$2"
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local zone="$3"
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[ -z "$iface" ] && {
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iface="docker"
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device="docker0"
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zone="docker"
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}
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/etc/init.d/dockerd running && {
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echo "Please stop dockerd service first"
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exit 0
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}
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# Add network interface
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if ! uci_quiet get network.${iface}; then
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logger -t "dockerd-init" -p notice "Adding docker default interface to network uci config (${iface})"
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uci_quiet add network interface
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uci_quiet rename network.@interface[-1]="${iface}"
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uci_quiet set network.@interface[-1].ifname="${device}"
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uci_quiet set network.@interface[-1].proto="none"
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uci_quiet set network.@interface[-1].auto="0"
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uci_quiet commit network
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fi
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# Add docker bridge device
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if ! uci_quiet get network.${device}; then
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logger -t "dockerd-init" -p notice "Adding docker default bridge device to network uci config (${device})"
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uci_quiet add network device
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uci_quiet rename network.@device[-1]="${device}"
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uci_quiet set network.@device[-1].type="bridge"
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uci_quiet set network.@device[-1].name="${device}"
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uci_quiet add_list network.@device[-1].ifname="${device}"
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uci_quiet commit network
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fi
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# Add firewall zone
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if ! uci_quiet get firewall.${zone}; then
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logger -t "dockerd-init" -p notice "Adding docker default firewall zone to firewall uci config (${zone})"
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uci_quiet add firewall zone
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uci_quiet rename firewall.@zone[-1]="${zone}"
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uci_quiet set firewall.@zone[-1].network="${iface}"
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uci_quiet set firewall.@zone[-1].input="REJECT"
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uci_quiet set firewall.@zone[-1].output="ACCEPT"
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uci_quiet set firewall.@zone[-1].forward="REJECT"
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uci_quiet set firewall.@zone[-1].name="${zone}"
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uci_quiet commit firewall
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fi
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reload_config
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}
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ucidel() {
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local iface="$1"
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local device="$2"
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local zone="$3"
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[ -z "$iface" ] && {
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iface="docker"
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device="docker0"
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zone="docker"
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}
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/etc/init.d/dockerd running && {
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echo "Please stop dockerd service first"
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exit 0
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}
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if uci_quiet get network.${device}; then
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logger -t "dockerd-init" -p notice "Deleting docker default bridge device from network uci config (${device})"
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uci_quiet delete network.${device}
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uci_quiet commit network
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fi
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if uci_quiet get network.${iface}; then
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logger -t "dockerd-init" -p notice "Deleting docker default interface from network uci config (${iface})"
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uci_quiet delete network.${iface}
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uci_quiet commit network
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fi
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if uci_quiet get firewall.${zone}; then
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logger -t "dockerd-init" -p notice "Deleting docker firewall zone from firewall uci config (${zone})"
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uci_quiet delete firewall.${zone}
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uci_quiet commit firewall
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fi
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reload_config
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}
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process_config() {
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local alt_config_file data_root log_level iptables bip
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[ -f /etc/config/dockerd ] || {
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# Use the daemon default configuration
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DOCKERD_CONF=""
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return 0
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}
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# reset configuration
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rm -fr "${DOCKER_CONF_DIR}"
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mkdir -p "${DOCKER_CONF_DIR}"
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config_load 'dockerd'
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config_get alt_config_file globals alt_config_file
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[ -n "${alt_config_file}" ] && [ -f "${alt_config_file}" ] && {
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ln -s "${alt_config_file}" "${DOCKERD_CONF}"
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return 0
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}
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config_get data_root globals data_root "/opt/docker/"
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config_get log_level globals log_level "warn"
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config_get_bool iptables globals iptables "1"
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config_get bip globals bip ""
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. /usr/share/libubox/jshn.sh
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json_init
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json_add_string "data-root" "${data_root}"
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json_add_string "log-level" "${log_level}"
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[ -z "${bip}" ] || json_add_string "bip" "${bip}"
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json_add_array "registry-mirrors"
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config_list_foreach globals registry_mirrors json_add_array_string
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json_close_array
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json_add_array "hosts"
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config_list_foreach globals hosts json_add_array_string
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json_close_array
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json_add_boolean iptables "${iptables}"
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[ "${iptables}" -ne "0" ] && config_foreach iptables_add_blocking_rule firewall
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json_dump > "${DOCKERD_CONF}"
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}
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start_service() {
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local nofile=$(cat /proc/sys/fs/nr_open)
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process_config
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procd_open_instance
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procd_set_param stderr 1
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if [ -z "${DOCKERD_CONF}" ]; then
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procd_set_param command /usr/bin/dockerd
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else
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procd_set_param command /usr/bin/dockerd --config-file="${DOCKERD_CONF}"
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fi
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procd_set_param limits nofile="${nofile} ${nofile}"
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procd_close_instance
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}
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reload_service() {
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process_config
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procd_send_signal dockerd
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}
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service_triggers() {
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procd_add_reload_trigger 'dockerd'
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}
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iptables_add_blocking_rule() {
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local cfg="$1"
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local device=""
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handle_iptables_rule() {
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local interface="$1"
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local outbound="$2"
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local inbound=""
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. /lib/functions/network.sh
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network_get_physdev inbound "${interface}"
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[ -z "$inbound" ] && {
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logger -t "dockerd-init" -p notice "Unable to get physical device for interface ${interface}"
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return
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}
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if ! iptables --table filter --check DOCKER-USER --in-interface "${inbound}" --out-interface "${outbound}" --jump DROP 2>/dev/null; then
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logger -t "dockerd-init" -p notice "Drop traffic from ${inbound} to ${outbound}"
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iptables --table filter --insert DOCKER-USER --in-interface "${inbound}" --out-interface "${outbound}" --jump DROP
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fi
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}
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config_get device "$cfg" device
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[ -z "$device" ] && {
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logger -t "dockerd-init" -p notice "No device configured for ${cfg}"
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return
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}
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config_list_foreach "$cfg" blocked_interfaces handle_iptables_rule "$device"
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}
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stop_service() {
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if /etc/init.d/dockerd running; then
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service_stop "/usr/bin/dockerd"
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fi
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}
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