54 lines
990 B
Go
54 lines
990 B
Go
package override
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import (
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"net"
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"github.com/coredns/caddy"
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"github.com/coredns/coredns/core/dnsserver"
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"github.com/coredns/coredns/plugin"
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)
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func init() {
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plugin.Register("override", setup)
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}
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func setup(c *caddy.Controller) error {
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rules, err := parseRules(c)
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if err != nil {
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return plugin.Error("override", err)
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}
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dnsserver.GetConfig(c).AddPlugin(func(next plugin.Handler) plugin.Handler {
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return Override{Next: next, Rules: rules}
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})
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return nil
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}
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func parseRules(c *caddy.Controller) ([]Rule, error) {
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var rules []Rule
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for c.Next() {
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for c.NextBlock() {
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searchIP := net.ParseIP(c.Val())
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if searchIP == nil {
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return nil, c.Errf("invalid search IP: %s", c.Val())
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}
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if !c.NextArg() {
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return nil, c.ArgErr()
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}
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overrideIP := net.ParseIP(c.Val())
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if overrideIP == nil {
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return nil, c.Errf("invalid override IP: %s", c.Val())
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}
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rules = append(rules, Rule{Search: searchIP, Override: overrideIP})
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}
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}
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return rules, nil
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}
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