文章目录
- 介绍
- DDNS 插件文件路径
- DDNS 插件架构
- luci-app-ddns
- /usr/lib/lua/luci/controller/ddns.lua
- DDNS 插件暴露接口文件 /etc/init.d/ddns
- DDNS 插件工作接口文件 /usr/lib/ddns/dynamic_dns_updater.sh
- ddns-scripts-cloudflare 工作
介绍
内核版本
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3$ cat /proc/version Linux version 5.15.32 (lawsssscat@lawsssscat-virtual-machine) (x86_64-openwrt-linux-musl-gcc (OpenWrt GCC 8.4.0 r4424-89e39d880) 8.4.0, GNU ld (GNU Binutils) 2.34) #0 SMP Sun Apr 3 11:12:12 2022
编译版本
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9$ cat /etc/openwrt_release DISTRIB_ID='OpenWrt' DISTRIB_RELEASE='SNAPSHOT' DISTRIB_TARGET='x86/64' DISTRIB_ARCH='x86_64' DISTRIB_TAINTS='no-all' DISTRIB_REVISION='R22.4.1' DISTRIB_DESCRIPTION='OpenWrt '
编译版本号
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3$ cat /etc/openwrt_version r4415-8f2b0b86b
DDNS 插件文件路径
查看 OpenWRT 中所有关于 DDNS 的软件包
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8$ opkg list-installed | grep ddns ddns-scripts - 2.7.8-3 ddns-scripts-cloudflare - 2.8.2-35 ddns-scripts_aliyun - 1.0.3-1 ddns-scripts_dnspod - 1.0.2-1 luci-app-ddns - 2.4.9-8 luci-i18n-ddns-zh-cn - 2.4.9-8
查看这些软件包的文件
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26$ opkg files ddns-scripts-cloudflare Package ddns-scripts-cloudflare (2.8.2-35) is installed on root and has the following files: /usr/share/ddns/default/cloudflare.com-v4.json /usr/lib/ddns/update_cloudflare_com_v4.sh $ opkg files ddns-scripts_aliyun Package ddns-scripts_aliyun (1.0.3-1) is installed on root and has the following files: /usr/lib/ddns/update_aliyun_com.sh $ opkg files ddns-scripts_dnspod Package ddns-scripts_dnspod (1.0.2-1) is installed on root and has the following files: /usr/lib/ddns/update_dnspod_cn.sh /usr/lib/ddns/update_dnspod_com.sh $ opkg files ddns-scripts Package ddns-scripts (2.7.8-3) is installed on root and has the following files: /etc/ddns/services /etc/uci-defaults/ddns /etc/ddns/services_ipv6 /usr/lib/ddns/dynamic_dns_updater.sh /etc/init.d/ddns /etc/hotplug.d/iface/95-ddns /etc/config/ddns /usr/lib/ddns/dynamic_dns_functions.sh /usr/lib/ddns/dynamic_dns_lucihelper.sh
DDNS 插件架构
像其他 OpenWRT 插件一样，DDNS 插件也分 ui 界面和脚本两部分：
-
ui 界面
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3luci-app-ddns - 2.4.9-8 ????界面核心 luci-i18n-ddns-zh-cn - 2.4.9-8 ????ui翻译 -
脚本
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5ddns-scripts - 2.7.8-3 ????脚本核心 ddns-scripts-cloudflare - 2.8.2-35 ????脚本cloudflare补充功能 ddns-scripts_aliyun - 1.0.3-1 ddns-scripts_dnspod - 1.0.2-1
luci-app-ddns
????关于 luci（openwrt 的 ui 界面） 的资料： https://lawsssscat.blog.csdn.net/article/details/103609225
先看安装情况
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41$ opkg info luci-i18n-ddns-zh-cn Package: luci-i18n-ddns-zh-cn Version: 2.4.9-8 Depends: libc, luci-app-ddns Status: install user installed Architecture: all Installed-Time: 1648984332 $ opkg files luci-i18n-ddns-zh-cn Package luci-i18n-ddns-zh-cn (2.4.9-8) is installed on root and has the following files: /usr/lib/lua/luci/i18n/ddns.zh-cn.lmo /etc/uci-defaults/luci-i18n-ddns-zh-cn $ opkg info luci-app-ddns Package: luci-app-ddns Version: 2.4.9-8 Depends: libc, luci-mod-admin-full, ddns-scripts Status: install user installed Architecture: all Installed-Time: 1648984332 $ opkg files luci-app-ddns Package luci-app-ddns (2.4.9-8) is installed on root and has the following files: /etc/uci-defaults/40_luci-ddns /usr/lib/lua/luci/tools/ddns.lua /usr/lib/lua/luci/model/cbi/ddns/detail.lua /usr/lib/lua/luci/model/cbi/ddns/hints.lua /usr/lib/lua/luci/model/cbi/ddns/global.lua /usr/lib/lua/luci/model/cbi/ddns/overview.lua /usr/lib/lua/luci/view/ddns/detail_value.htm /usr/lib/lua/luci/view/ddns/global_value.htm /usr/lib/lua/luci/view/ddns/overview_doubleline.htm /usr/lib/lua/luci/view/ddns/system_status.htm /usr/lib/lua/luci/view/ddns/detail_logview.htm /usr/lib/lua/luci/view/ddns/overview_startstop.htm /usr/lib/lua/luci/view/ddns/detail_lvalue.htm /usr/lib/lua/luci/view/ddns/overview_status.htm /usr/lib/lua/luci/view/ddns/overview_enabled.htm /usr/lib/lua/luci/view/admin_status/index/ddns.htm /usr/lib/lua/luci/controller/ddns.lua
???? 关于 luci 的运行流程大致是：
- 用户访问页面 => 通过 Controller 进行路由
- Controller 选择 model（数据） 和 view（页面）
- 渲染 view 页面返回给用户
先看 controller
/usr/lib/lua/luci/controller/ddns.lua
????luci 进来只看 index 方法，通过该方法对整个插件进行注册，然后就可以在 web 界面上看到了。
index 方法：（简略）
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37function index() -- ????说明基于该文件 -- no config create an empty one if not nxfs.access("/etc/config/ddns") then nxfs.writefile("/etc/config/ddns", "") end -- preset new option "lookup_host" if not already defined local uci = muci.cursor() local commit = false uci:foreach("ddns", "service", function (s) -- ????遍历/etc/config/ddns文件内容 -- ????lookup_host ── 查询主机名 -- ????domain ── 需要解析的域名 -- ????一般 lookup_host 的 ip 和 domain 的 ip 一致时，认为动态域名绑定成功 if not s["lookup_host"] and s["domain"] then uci:set("ddns", s[".name"], "lookup_host", s["domain"]) commit = true end end) if commit then uci:commit("ddns") end -- ????提交更改 uci:unload("ddns") -- ???? 前面的 {path1, path2, ...} 是路径 => http(s)://<host>/cgi-bin/luci/path1/path2/... -- ???? cbi 结合 view、moduel 渲染页面，并返回 /usr/lib/lua/luci/model/cbi/<str> -- ???? call 调用 lua 方法 -- ???? post 请求 entry( {"admin", "services", "ddns"}, cbi("ddns/overview"), _("Dynamic DNS"), 59) entry( {"admin", "services", "ddns", "detail"}, cbi("ddns/detail"), nil ).leaf = true entry( {"admin", "services", "ddns", "hints"}, cbi("ddns/hints", {hideapplybtn=true, hidesavebtn=true, hideresetbtn=true}), nil ).leaf = true entry( {"admin", "services", "ddns", "global"}, cbi("ddns/global"), nil ).leaf = true entry( {"admin", "services", "ddns", "logview"}, call("logread") ).leaf = true entry( {"admin", "services", "ddns", "startstop"}, post("startstop") ).leaf = true entry( {"admin", "services", "ddns", "status"}, call("status") ).leaf = true end
DDNS 插件暴露接口文件 /etc/init.d/ddns
查看 /etc/init.d/ddns 文件
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23#!/bin/sh /etc/rc.common START=95 STOP=10 boot() { return 0 } reload() { /usr/lib/ddns/dynamic_dns_updater.sh -- reload return 0 } restart() { /usr/lib/ddns/dynamic_dns_updater.sh -- stop sleep 1 /usr/lib/ddns/dynamic_dns_updater.sh -- start } start() { /usr/lib/ddns/dynamic_dns_updater.sh -- start } stop() { /usr/lib/ddns/dynamic_dns_updater.sh -- stop return 0 }
DDNS 插件工作接口文件 /usr/lib/ddns/dynamic_dns_updater.sh
查看 /usr/lib/ddns/dynamic_dns_updater.sh 文件
help
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28#!/bin/sh #.Distributed under the terms of the GNU General Public License (GPL) version 2.0 #.2014-2018 Christian Schoenebeck <christian dot schoenebeck at gmail dot com> . $(dirname $0)/dynamic_dns_functions.sh usage() { cat << EOF Usage: $MYPROG [options] -- command Commands: start Start SECTION or NETWORK or all stop Stop NETWORK or all Parameters: -n NETWORK Start/Stop sections in background monitoring NETWORK, force VERBOSE=0 -S SECTION SECTION to start use either -N NETWORK or -S SECTION -h show this help and exit -V show version and exit -v LEVEL VERBOSE=LEVEL (default 1) '0' NO output to console '1' output to console '2' output to console AND logfile + run once WITHOUT retry on error '3' output to console AND logfile + run once WITHOUT retry on error + NOT sending update to DDNS service EOF }
首先会引用几个库
- /usr/lib/ddns/dynamic_dns_functions.sh
- /lib/functions.sh
- /lib/functions/network.sh
ddns-scripts-cloudflare 工作
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9$ opkg list-installed | grep ddns ddns-scripts - 2.7.8-3 ddns-scripts-cloudflare - 2.8.2-35 ddns-scripts_aliyun - 1.0.3-1 ddns-scripts_dnspod - 1.0.2-1 luci-app-ddns - 2.4.9-8 luci-i18n-ddns-zh-cn - 2.4.9-8
最后
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