bfad4a3932
All further kontemplate source code changes and releases will happen under the GPLv3. Previous releases are still available under the MIT license.
45 lines
1 KiB
Go
45 lines
1 KiB
Go
// Copyright (C) 2016-2017 Vincent Ambo <mail@tazj.in>
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//
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// This file is part of Kontemplate.
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//
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// Kontemplate is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This file contains the implementation of a template function for retrieving
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// IP addresses from DNS
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package templater
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import (
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"fmt"
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"github.com/polydawn/meep"
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"net"
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"os"
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)
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type DNSError struct {
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meep.TraitAutodescribing
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meep.TraitCausable
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Output string
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}
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func GetIPsFromDNS(host string) ([]interface{}, error) {
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fmt.Fprintf(os.Stderr, "Attempting to look up IP for %s in DNS\n", host)
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ips, err := net.LookupIP(host)
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if err != nil {
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return nil, meep.New(
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&DNSError{Output: "IP address lookup failed"},
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meep.Cause(err),
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)
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}
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var result []interface{} = make([]interface{}, len(ips))
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for i, ip := range ips {
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result[i] = ip
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}
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return result, nil
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}
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