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zerotier: split configuration
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Split configuration in global and per-network sections.
This change breaks existing configurations.

The following per-network settings are available:

* allow_managed
* allow_global
* allow_default
* allow_dns

See  https://docs.zerotier.com/config/#network-specific-configuration

Signed-off-by: Óscar García Amor <[email protected]>
Signed-off-by: Moritz Warning <[email protected]>
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@mwarning
mwarning committed Aug 20, 2024
1 parent b806d77 commit c3b2343
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Showing 4 changed files with 106 additions and 88 deletions.
3 changes: 2 additions & 1 deletion net/zerotier/Makefile
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Expand Up @@ -7,7 +7,7 @@ include $(TOPDIR)/rules.mk

PKG_NAME:=zerotier
PKG_VERSION:=1.14.0
PKG_RELEASE:=1
PKG_RELEASE:=2

PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
PKG_SOURCE_URL:=https://codeload.github.com/zerotier/ZeroTierOne/tar.gz/$(PKG_VERSION)?
Expand Down Expand Up @@ -69,6 +69,7 @@ endef
define Package/zerotier/install
$(INSTALL_DIR) $(1)/usr/bin
$(INSTALL_BIN) $(PKG_BUILD_DIR)/zerotier-one $(1)/usr/bin/
$(INSTALL_DIR) $(1)/etc/uci-defaults
$(LN) zerotier-one $(1)/usr/bin/zerotier-cli
$(LN) zerotier-one $(1)/usr/bin/zerotier-idtool

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45 changes: 32 additions & 13 deletions net/zerotier/files/etc/config/zerotier
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@@ -1,20 +1,39 @@

config zerotier sample_config
config zerotier 'global'
# Sets whether ZeroTier is enabled or not
option enabled 0

# persistent configuration folder (for ZT controller mode)
# Sets the ZeroTier listening port (default 9993; set to 0 for random)
#option port '9993'
# Client secret (leave blank to generate a secret on first run)
option secret ''
# Path of the optional file local.conf (see documentation at
# https://docs.zerotier.com/config#local-configuration-options)
#option local_conf_path '/etc/zerotier.conf'
# Persistent configuration directory (to perform other configurations such
# as controller mode or moons, etc.)
#option config_path '/etc/zerotier'
# copy <config_path> to RAM to prevent writing to flash (for ZT controller mode)
# Copy the contents of the persistent configuration directory to memory
# instead of linking it, this avoids writing to flash
#option copy_config_path '1'

#option port '9993'

# path to the local.conf
#option local_conf '/etc/zerotier.conf'
# Network configuration, you can have as many configurations as networks you
# want to join (the network name is optional)
config network 'mynet'
# Identifier of the network you wish to join
option id '8056c2e21c000001'
# Network configuration parameters (all are optional, if not indicated the
# default values are set, see documentation at
# https://docs.zerotier.com/config/#network-specific-configuration)
option allow_managed '1'
option allow_global '0'
option allow_default '0'
option allow_dns '0'

# Generate secret on first start
option secret ''
# Example of a second network (unnamed as it is optional)
#config network
# option id '1234567890123456'
# option allow_managed '1'
# option allow_global '0'
# option allow_default '0'
# option allow_dns '0'

# Join a public network called Earth
list join '8056c2e21c000001'
#list join '<other_network>'
129 changes: 55 additions & 74 deletions net/zerotier/files/etc/init.d/zerotier
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Expand Up @@ -7,113 +7,94 @@ USE_PROCD=1
PROG=/usr/bin/zerotier-one
CONFIG_PATH=/var/lib/zerotier-one

section_enabled() {
config_get_bool enabled "$1" 'enabled' 0
[ $enabled -ne 0 ]
join_network() {
local section="${1}"
local id allow_managed allow_global allow_default allow_dns

config_get id "${section}" 'id'
config_get_bool allow_managed "${section}" 'allow_managed' 1
config_get_bool allow_global "${section}" 'allow_global' 0
config_get_bool allow_default "${section}" 'allow_default' 0
config_get_bool allow_dns "${section}" 'allow_dns' 0

if [ -n "${id}" ]; then
# an (empty) config file will cause ZT to join a network
touch "${CONFIG_PATH}"/networks.d/"${id}".conf
echo "allowManaged=${allow_managed}" > "${CONFIG_PATH}"/networks.d/"${id}".local.conf
echo "allowGlobal=${allow_global}" >> "${CONFIG_PATH}"/networks.d/"${id}".local.conf
echo "allowDefault=${allow_default}" >> "${CONFIG_PATH}"/networks.d/"${id}".local.conf
echo "allowDNS=${allow_dns}" >> "${CONFIG_PATH}"/networks.d/"${id}".local.conf
fi
}

start_instance() {
local cfg="$1"
local port secret config_path local_conf copy_config_path path
start_service() {
config_load zerotier
local enabled port secret local_conf_path config_path copy_config_path
local args=""

if ! section_enabled "$cfg"; then
config_get_bool enabled 'global' 'enabled' 0
config_get port 'global' 'port'
config_get secret 'global' 'secret'
config_get local_conf_path 'global' 'local_conf_path'
config_get config_path 'global' 'config_path'
config_get_bool copy_config_path 'global' 'copy_config_path' 0

if [ ${enabled} -eq 0 ]; then
echo "disabled in /etc/config/zerotier"
return 1
fi

config_get config_path $cfg 'config_path'
config_get port $cfg 'port'
config_get secret $cfg 'secret'
config_get local_conf $cfg 'local_conf'
config_get_bool copy_config_path $cfg 'copy_config_path' 0

path=${CONFIG_PATH}_$cfg

# Remove existing link or folder
rm -rf $path
rm -rf "${CONFIG_PATH}"

# Create link or copy files from CONFIG_PATH to config_path
if [ -n "$config_path" -a "$config_path" != "$path" ]; then
if [ ! -d "$config_path" ]; then
echo "ZeroTier config_path does not exist: $config_path" 1>&2
# Create link or copy files from config_path to CONFIG_PATH
if [ -n "${config_path}" -a "${config_path}" != "${path}" ]; then
if [ ! -d "${config_path}" ]; then
echo "ZeroTier config_path does not exist: ${config_path}" 1>&2
return
fi

# ensure that the target exists
mkdir -p $(dirname $path)

if [ "$copy_config_path" = "1" ]; then
cp -r $config_path $path
if [ ${copy_config_path} -eq 1 ]; then
cp -r "${config_path}" "${CONFIG_PATH}"
else
ln -s $config_path $path
ln -s "${config_path}" "${CONFIG_PATH}"
fi
fi

mkdir -p $path/networks.d

# link latest default config path to latest config path
rm -f $CONFIG_PATH
ln -s $path $CONFIG_PATH

if [ -n "$port" ]; then
args="$args -p${port}"
if [ -f "${local_conf_path}" ]; then
ln -s "${local_conf_path}" "${CONFIG_PATH}"/local.conf
fi

if [ -z "$secret" ]; then
echo "Generate secret - please wait..."
local sf="/tmp/zt.$cfg.secret"

zerotier-idtool generate "$sf" > /dev/null
[ $? -ne 0 ] && return 1

secret="$(cat $sf)"
rm "$sf"
if [ -n "${port}" ]; then
args="${args} -p${port}"
fi

uci set zerotier.$cfg.secret="$secret"
if [ -z "${secret}" ]; then
echo -n "Generating secret - please wait... "
secret="$(zerotier-idtool generate)"
[ ${?} -ne 0 ] && return 1
uci set zerotier.global.secret="${secret}"
uci commit zerotier
echo "done."
fi

if [ -n "$secret" ]; then
echo "$secret" > $path/identity.secret
if [ -n "${secret}" ]; then
echo "${secret}" > "${CONFIG_PATH}"/identity.secret
# make sure there is not previous identity.public
rm -f $path/identity.public
fi

if [ -f "$local_conf" ]; then
ln -s "$local_conf" $path/local.conf
rm -f "${CONFIG_PATH}"/identity.public
fi

add_join() {
# an (empty) config file will cause ZT to join a network
touch $path/networks.d/$1.conf
}

config_list_foreach $cfg 'join' add_join
mkdir -p "${CONFIG_PATH}"/networks.d
config_foreach join_network network

procd_open_instance
procd_set_param command $PROG $args $path
procd_set_param command ${PROG} ${args}
procd_set_param stderr 1
procd_set_param respawn
procd_close_instance
}

start_service() {
config_load 'zerotier'
config_foreach start_instance 'zerotier'
}

stop_instance() {
local cfg="$1"

# Remove existing link or folder
rm -rf ${CONFIG_PATH}_${cfg}
}

stop_service() {
config_load 'zerotier'
config_foreach stop_instance 'zerotier'
rm -f ${CONFIG_PATH}
rm -rf "${CONFIG_PATH}"
}

reload_service() {
Expand Down
17 changes: 17 additions & 0 deletions net/zerotier/files/etc/uci-defaults/80-zt-migration
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Original file line number Diff line number Diff line change
@@ -0,0 +1,17 @@
# Convert the join list into networks
nets=$(uci get zerotier.@zerotier[0].join)
for net in ${nets}; do
sid=$(uci add zerotier network)
uci set zerotier.${sid}.id=${net}
done
uci delete zerotier.@zerotier[0].join

# Rename local conf (only if defined)
uci rename zerotier.@zerotier[0].local_conf='local_conf_path' \
> /dev/null 2>&1 || true

# Rename configuration to default
uci rename zerotier.@zerotier[0]='default'

# Commit all changes
uci commit zerotier

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