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cache-domains: added game cache DNS config service

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Signed-off-by: Gerard Ryan <G.M0N3Y.2503@gmail.com>
This commit is contained in:
Gerard Ryan 2019-08-17 21:44:29 +10:00 committed by Yousong Zhou
parent 326b48d5c5
commit 6e8be5f42e
3 changed files with 124 additions and 0 deletions
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52
utils/cache-domains/Makefile Normal file
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include $(TOPDIR)/rules.mk
PKG_NAME:=cache-domains
PKG_VERSION:=1.0.0
PKG_RELEASE:=1
PKG_MAINTAINER:=Gerard Ryan <G.M0N3Y.2503@gmail.com>
include $(INCLUDE_DIR)/package.mk
define Package/cache-domains/default
SECTION:=utils
CATEGORY:=Utilities
TITLE:=Game content cache DNS
URL:=https://github.com/uklans/cache-domains
DEPENDS:=+jq +bash +dnsmasq +ca-bundle
endef
define Package/cache-domains/description/default
Service to dynamically configure the local DNS (dnsmasq) to redirect game content servers to a LAN cache.
Definitive list dynamically obtained from https://github.com/uklans/cache-domains.
endef
define Package/cache-domains/install/default
$(INSTALL_DIR) $(1)/etc/init.d
$(INSTALL_BIN) ./files/cache-domains.init $(1)/etc/init.d/cache-domains
endef
Build/Compile=# Nothing to compile, just install the scripts
define Package/cache-domains-openssl
$(Package/cache-domains/default)
TITLE += (openssl)
DEPENDS += +libustream-openssl
VARIANT:=openssl
endef
Package/cache-domains-openssl/description = $(Package/cache-domains/description/default)
Package/cache-domains-openssl/install = $(Package/cache-domains/install/default)
define Package/cache-domains-mbedtls
$(Package/cache-domains/default)
TITLE += (mbedtls)
DEPENDS += +libustream-mbedtls
VARIANT:=mbedtls
DEFAULT_VARIANT:=1
endef
Package/cache-domains-mbedtls/description = $(Package/cache-domains/description/default)
Package/cache-domains-mbedtls/install = $(Package/cache-domains/install/default)
$(eval $(call BuildPackage,cache-domains-openssl))
$(eval $(call BuildPackage,cache-domains-mbedtls))

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utils/cache-domains/README.md Normal file
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# cache-domains
Service to dynamically configure the local DNS (dnsmasq) to redirect game content servers to a LAN cache. Definitive list dynamically obtained from https://github.com/uklans/cache-domains.
## Configuration
Configuration file follows the same [syntax as the upsteam file](https://github.com/uklans/cache-domains/blob/master/scripts/config.example.json). The key for each `cache_domain` member matches the name of one of the `.txt` files in the [upstream root directory](https://github.com/uklans/cache-domains/blob/master/), except for the `default` key which matches the all the unreferenced `.txt` files. The value of each `cache_domain` member maps to one of the keys of the `ips` members, Thus mapping a cached domain to a list of IP addresses/LAN cache server.
```json
{
"ips": {
"server1": ["10.10.3.10", "10.10.3.11"],
"server2": "10.10.3.12",
"server3": "10.10.3.13"
},
"cache_domains": {
"default": "server2",
"blizzard": "server1",
"origin": "server1",
"steam": "server1",
"wsus": "server3",
"xboxlive": "server3"
}
}
```
## Startup/Shutdown
On start the local DNS (dnsmasq) will be configured to redirect the configured cache domains and on stop the redirection will be removed.
## Testing
With the above configuration set and the service running `nslookup swcdn.apple.com` would return `10.10.3.12`

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utils/cache-domains/files/cache-domains.init Normal file
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#!/bin/sh /etc/rc.common
START=24
SERVICE_NAME=cache-domains
CACHE_DOMAINS_DIR="/var/${SERVICE_NAME}"
CACHE_DOMAINS_SRC="https://api.github.com/repos/uklans/cache-domains/tarball/master"
CONFIG_FILE="/etc/${SERVICE_NAME}.json"
start() {
mkdir -p ${CACHE_DOMAINS_DIR}
rm -fr ${CACHE_DOMAINS_DIR}/*
if ! wget -qO - ${CACHE_DOMAINS_SRC} | tar -xzC ${CACHE_DOMAINS_DIR}; then
echo "ERROR: Could not retrieve ${CACHE_DOMAINS_SRC}"
return 1
fi
INITIAL_DIR="$(pwd)"
cd ${CACHE_DOMAINS_DIR}/*/scripts/
if [ ! -f ${CONFIG_FILE} ]; then
cp config.example.json ${CONFIG_FILE}
echo "Using example config file ${CONFIG_FILE}"
fi
cp ${CONFIG_FILE} config.json
./create-dnsmasq.sh
cp ./output/dnsmasq/* /tmp/dnsmasq.d/
cd ${INITIAL_DIR}
/etc/init.d/dnsmasq restart
}
stop() {
# leave dnsmasq in a clean state
for FILE in ${CACHE_DOMAINS_DIR}/*/scripts/output/dnsmasq/*; do
rm -f /tmp/dnsmasq.d/$(basename ${FILE})
done
/etc/init.d/dnsmasq restart
}