94 lines
2.1 KiB
Go
94 lines
2.1 KiB
Go
package updateip
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import (
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"fmt"
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"net"
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"github.com/hashicorp/hcl/v2/hclsimple"
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log "github.com/sirupsen/logrus"
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)
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func Load(name string) (*Config, error) {
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var (
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config Config
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err error
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)
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log.WithField("config", name).Debug("loading configuration file")
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if err = hclsimple.DecodeFile(name, nil, &config); err != nil {
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return nil, err
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}
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providers := make(map[string]Provider)
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for _, v := range config.Provider {
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if providers[v.Name], err = NewProvider(v); err != nil {
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return nil, fmt.Errorf("error configuring provider %q: %w", v.Name, err)
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}
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}
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for _, v := range config.Domain {
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if p, ok := providers[v.ProviderName]; ok {
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v.Provider = p
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} else {
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return nil, fmt.Errorf("provider %q in domain %q is not configured", v.ProviderName, v.Name)
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}
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if len(v.Update) == 0 {
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v.Update = append(v.Update, "@")
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}
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}
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return &config, nil
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}
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type Config struct {
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Resolver ResolverConfig `hcl:"resolver,block"`
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Domain []*DomainConfig `hcl:"domain,block"`
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Provider []*ProviderConfig `hcl:"provider,block"`
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}
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type ResolverConfig struct {
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Permit []string `hcl:"permit"`
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}
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func (r ResolverConfig) CurrentIP() (net.IP, error) {
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return NewResolver().CurrentIP()
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}
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func (r ResolverConfig) IsAllowed(ip net.IP) bool {
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if len(r.Permit) == 0 {
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// Fail open if no ACL is configured.
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log.WithField("ip", ip.String()).Debug("IP allowed by resolver; no ACL")
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return true
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}
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for _, v := range r.Permit {
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if _, ipnet, err := net.ParseCIDR(v); err == nil {
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if ipnet.Contains(ip) {
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log.WithFields(log.Fields{
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"ip": ip.String(),
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"range": ipnet.String(),
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}).Debug("IP allowed by resolver ACL")
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return true
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}
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}
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}
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log.WithField("ip", ip.String()).Warn("IP not allowed by resolver ACL")
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return false
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}
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type DomainConfig struct {
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Name string `hcl:"name,label"`
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ProviderName string `hcl:"provider"`
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Provider Provider ``
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Update []string `hcl:"update,optional"`
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}
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type ProviderConfig struct {
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Name string `hcl:"name,label"`
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Type string
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Username string `hcl:"username"`
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PrivateKey string `hcl:"private_key"`
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}
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