39 lines
860 B
Go
39 lines
860 B
Go
// Package parse contains functions that can be used in the setup code for plugins.
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package parse
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import (
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"fmt"
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"github.com/coredns/caddy"
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"github.com/coredns/coredns/plugin/pkg/transport"
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)
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// TransferIn parses transfer statements: 'transfer from [address...]'.
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func TransferIn(c *caddy.Controller) (froms []string, err error) {
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if !c.NextArg() {
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return nil, c.ArgErr()
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}
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value := c.Val()
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switch value {
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default:
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return nil, c.Errf("unknown property %s", value)
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case "from":
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froms = c.RemainingArgs()
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if len(froms) == 0 {
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return nil, c.ArgErr()
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}
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for i := range froms {
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if froms[i] != "*" {
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normalized, err := HostPort(froms[i], transport.Port)
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if err != nil {
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return nil, err
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}
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froms[i] = normalized
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} else {
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return nil, fmt.Errorf("can't use '*' in transfer from")
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}
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}
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}
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return froms, nil
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}
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