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1ffcd90796
93
.gitignore
vendored
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93
.gitignore
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# Created by https://www.toptal.com/developers/gitignore/api/goland+all
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# Edit at https://www.toptal.com/developers/gitignore?templates=goland+all
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### GoLand+all ###
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# Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio, WebStorm and Rider
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# Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839
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# User-specific stuff
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.idea/**/workspace.xml
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.idea/**/tasks.xml
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.idea/**/usage.statistics.xml
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.idea/**/dictionaries
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.idea/**/shelf
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# AWS User-specific
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.idea/**/aws.xml
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# Generated files
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.idea/**/contentModel.xml
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# Sensitive or high-churn files
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.idea/**/dataSources/
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.idea/**/dataSources.ids
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.idea/**/dataSources.local.xml
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.idea/**/sqlDataSources.xml
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.idea/**/dynamic.xml
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.idea/**/uiDesigner.xml
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.idea/**/dbnavigator.xml
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# Gradle
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.idea/**/gradle.xml
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.idea/**/libraries
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# Gradle and Maven with auto-import
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# When using Gradle or Maven with auto-import, you should exclude module files,
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# since they will be recreated, and may cause churn. Uncomment if using
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# auto-import.
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# .idea/artifacts
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# .idea/compiler.xml
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# .idea/jarRepositories.xml
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# .idea/modules.xml
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# .idea/*.iml
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# .idea/modules
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# *.iml
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# *.ipr
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# CMake
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cmake-build-*/
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# Mongo Explorer plugin
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.idea/**/mongoSettings.xml
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# File-based project format
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*.iws
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# IntelliJ
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out/
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# mpeltonen/sbt-idea plugin
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.idea_modules/
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# JIRA plugin
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atlassian-ide-plugin.xml
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# Cursive Clojure plugin
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.idea/replstate.xml
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# SonarLint plugin
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.idea/sonarlint/
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# Crashlytics plugin (for Android Studio and IntelliJ)
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com_crashlytics_export_strings.xml
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crashlytics.properties
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crashlytics-build.properties
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fabric.properties
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# Editor-based Rest Client
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.idea/httpRequests
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# Android studio 3.1+ serialized cache file
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.idea/caches/build_file_checksums.ser
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### GoLand+all Patch ###
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# Ignore everything but code style settings and run configurations
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# that are supposed to be shared within teams.
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.idea/*
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!.idea/codeStyles
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!.idea/runConfigurations
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# End of https://www.toptal.com/developers/gitignore/api/goland+all
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15
go.mod
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15
go.mod
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module dyndns-inwx-go
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go 1.21
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require (
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github.com/libdns/inwx v0.2.0
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github.com/libdns/libdns v0.2.1
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github.com/sethvargo/go-envconfig v1.0.0
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)
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require (
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github.com/boombuler/barcode v1.0.1 // indirect
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github.com/mitchellh/mapstructure v1.5.0 // indirect
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github.com/pquerna/otp v1.4.0 // indirect
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)
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22
go.sum
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22
go.sum
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github.com/boombuler/barcode v1.0.1-0.20190219062509-6c824513bacc/go.mod h1:paBWMcWSl3LHKBqUq+rly7CNSldXjb2rDl3JlRe0mD8=
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github.com/boombuler/barcode v1.0.1 h1:NDBbPmhS+EqABEs5Kg3n/5ZNjy73Pz7SIV+KCeqyXcs=
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github.com/boombuler/barcode v1.0.1/go.mod h1:paBWMcWSl3LHKBqUq+rly7CNSldXjb2rDl3JlRe0mD8=
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github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
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github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
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github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
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github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
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github.com/libdns/inwx v0.2.0 h1:yCP5EiVqmmp71dFhCD34PkUxLQixJTEZNOlO6itdNeA=
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github.com/libdns/inwx v0.2.0/go.mod h1:QNKQqPp5wVvbuMMmGFZz0UL9tZ6FaWlKTMPeUqPsJ+g=
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github.com/libdns/libdns v0.2.1 h1:Wu59T7wSHRgtA0cfxC+n1c/e+O3upJGWytknkmFEDis=
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github.com/libdns/libdns v0.2.1/go.mod h1:yQCXzk1lEZmmCPa857bnk4TsOiqYasqpyOEeSObbb40=
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github.com/mitchellh/mapstructure v1.5.0 h1:jeMsZIYE/09sWLaz43PL7Gy6RuMjD2eJVyuac5Z2hdY=
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github.com/mitchellh/mapstructure v1.5.0/go.mod h1:bFUtVrKA4DC2yAKiSyO/QUcy7e+RRV2QTWOzhPopBRo=
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github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
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github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
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github.com/pquerna/otp v1.4.0 h1:wZvl1TIVxKRThZIBiwOOHOGP/1+nZyWBil9Y2XNEDzg=
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github.com/pquerna/otp v1.4.0/go.mod h1:dkJfzwRKNiegxyNb54X/3fLwhCynbMspSyWKnvi1AEg=
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github.com/sethvargo/go-envconfig v1.0.0 h1:1C66wzy4QrROf5ew4KdVw942CQDa55qmlYmw9FZxZdU=
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github.com/sethvargo/go-envconfig v1.0.0/go.mod h1:Lzc75ghUn5ucmcRGIdGQ33DKJrcjk4kihFYgSTBmjIc=
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github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
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github.com/stretchr/testify v1.3.0 h1:TivCn/peBQ7UY8ooIcPgZFpTNSz0Q2U6UrFlUfqbe0Q=
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github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
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117
main.go
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117
main.go
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package main
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import (
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"context"
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"fmt"
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"github.com/libdns/libdns"
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"log"
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"net"
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"os"
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"strings"
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"time"
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"github.com/libdns/inwx"
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"github.com/sethvargo/go-envconfig"
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)
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type Config struct {
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Username string `env:"DYNDNS_USERNAME, required"`
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Password string `env:"DYNDNS_PASSWORD, required"`
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Zone string `env:"DYNDNS_ZONE, required"`
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Record string `env:"DYNDNS_RECORD, required"`
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Nameservers string `env:"DYNDNS_NAMESERVERS, required"`
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}
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func main() {
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ctx := context.Background()
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var cfg Config
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if err := envconfig.Process(ctx, &cfg); err != nil {
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log.Fatal("Error reading config: ", err)
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}
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ifaces, err := net.Interfaces()
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if err != nil {
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log.Fatal("Error getting interfaces: ", err)
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}
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var ownIp string
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for _, iface := range ifaces {
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addrs, err := iface.Addrs()
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if err != nil {
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log.Fatalf("Error getting addresses for %v: %s", iface, err)
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}
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for _, addr := range addrs {
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if ipnet, ok := addr.(*net.IPNet); ok &&
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ipnet.IP.To4() == nil &&
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!ipnet.IP.IsPrivate() &&
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!ipnet.IP.IsLinkLocalUnicast() &&
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!ipnet.IP.IsLoopback() &&
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ipnet.IP.IsGlobalUnicast() {
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ownIp = ipnet.IP.String()
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}
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}
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}
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log.Print("Detected own IP: ", ownIp)
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resolv := &net.Resolver{
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PreferGo: true,
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Dial: func(ctx context.Context, network, address string) (net.Conn, error) {
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d := net.Dialer{
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Timeout: time.Duration(10) * time.Second,
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}
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var conn net.Conn
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var err error
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for _, server := range strings.Split(cfg.Nameservers, ",") {
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conn, err = d.DialContext(ctx, network, fmt.Sprintf("%s:53", server))
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if err == nil {
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return conn, err
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} else {
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log.Printf("Error resolving with NS \"%s\"", server)
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}
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}
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return conn, err
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},
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}
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target := fmt.Sprintf("%s.%s", cfg.Record, cfg.Zone)
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resolvIps, err := resolv.LookupHost(ctx, target)
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if err != nil {
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log.Fatalf("Error resolving %s: %v", target, err)
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}
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if len(resolvIps) != 1 {
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log.Fatalf("Detected %d IPs for \"%s\". Don't know what to do", len(resolvIps), target)
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}
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resolvIp := resolvIps[0]
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log.Printf("Resolved IP: %s", resolvIp)
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forceUpdate := len(os.Args) == 2 && os.Args[1] == "--force"
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if forceUpdate {
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log.Println("Detected force update")
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}
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if ownIp == resolvIp && !forceUpdate {
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log.Println("Resolved IP is equal to own IP. Nothing to do.")
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os.Exit(0)
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}
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provider := &inwx.Provider{
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Username: cfg.Username,
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Password: cfg.Password,
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}
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records, err := provider.SetRecords(context.Background(), cfg.Zone, []libdns.Record{
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{
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Type: "AAAA",
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Name: cfg.Record,
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Value: ownIp,
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TTL: time.Duration(15) * time.Minute,
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},
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})
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if err != nil {
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log.Fatalf("Error updating DNS record \"%s\": %s", target, err)
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}
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for _, record := range records {
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log.Printf("Set record: %v", record)
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}
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}
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