From 6e8be5f42e7406c8c59459e404641ef5751c26c9 Mon Sep 17 00:00:00 2001 From: Gerard Ryan Date: Sat, 17 Aug 2019 21:44:29 +1000 Subject: [PATCH] cache-domains: added game cache DNS config service Signed-off-by: Gerard Ryan --- utils/cache-domains/Makefile | 52 ++++++++++++++++++++ utils/cache-domains/README.md | 30 +++++++++++ utils/cache-domains/files/cache-domains.init | 42 ++++++++++++++++ 3 files changed, 124 insertions(+) create mode 100644 utils/cache-domains/Makefile create mode 100644 utils/cache-domains/README.md create mode 100644 utils/cache-domains/files/cache-domains.init diff --git a/utils/cache-domains/Makefile b/utils/cache-domains/Makefile new file mode 100644 index 0000000000..8c6ace3e3c --- /dev/null +++ b/utils/cache-domains/Makefile @@ -0,0 +1,52 @@ +include $(TOPDIR)/rules.mk + +PKG_NAME:=cache-domains +PKG_VERSION:=1.0.0 +PKG_RELEASE:=1 + +PKG_MAINTAINER:=Gerard Ryan + +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 $(call BuildPackage,cache-domains-mbedtls)) diff --git a/utils/cache-domains/README.md b/utils/cache-domains/README.md new file mode 100644 index 0000000000..5ef40ddf52 --- /dev/null +++ b/utils/cache-domains/README.md @@ -0,0 +1,30 @@ +# cache-domains + +Service to dynamically configure the local DNS (dnsmasq) to redirect game content servers to a LAN cache. Definitive list dynamically obtained from https://github.com/uklans/cache-domains. + +## Configuration +Configuration file follows the same [syntax as the upsteam file](https://github.com/uklans/cache-domains/blob/master/scripts/config.example.json). The key for each `cache_domain` member matches the name of one of the `.txt` files in the [upstream root directory](https://github.com/uklans/cache-domains/blob/master/), except for the `default` key which matches the all the unreferenced `.txt` files. The value of each `cache_domain` member maps to one of the keys of the `ips` members, Thus mapping a cached domain to a list of IP addresses/LAN cache server. + +```json +{ + "ips": { + "server1": ["10.10.3.10", "10.10.3.11"], + "server2": "10.10.3.12", + "server3": "10.10.3.13" + }, + "cache_domains": { + "default": "server2", + "blizzard": "server1", + "origin": "server1", + "steam": "server1", + "wsus": "server3", + "xboxlive": "server3" + } +} +``` + +## Startup/Shutdown +On start the local DNS (dnsmasq) will be configured to redirect the configured cache domains and on stop the redirection will be removed. + +## Testing +With the above configuration set and the service running `nslookup swcdn.apple.com` would return `10.10.3.12` diff --git a/utils/cache-domains/files/cache-domains.init b/utils/cache-domains/files/cache-domains.init new file mode 100644 index 0000000000..ca7ac03be2 --- /dev/null +++ b/utils/cache-domains/files/cache-domains.init @@ -0,0 +1,42 @@ +#!/bin/sh /etc/rc.common + +START=24 +SERVICE_NAME=cache-domains +CACHE_DOMAINS_DIR="/var/${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 +}