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60 lines
2 KiB
Go
60 lines
2 KiB
Go
package models
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import (
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"fmt"
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"net"
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)
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// PopulateFromString populates a RecordConfig given a type and string.
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// Many providers give all the parameters of a resource record in one big
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// string (all the parameters of an MX, SRV, CAA, etc). Rather than have
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// each provider rewrite this code many times, here's a helper function to use.
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//
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// At this time, the idiom is to panic rather than continue with potentially
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// misunderstood data. We do this panic() at the provider level.
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// Therefore the typical calling sequence is:
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// if err := rc.PopulateFromString(rtype, value, origin); err != nil {
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// panic(fmt.Errorf("unparsable record received from provider: %w", err))
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// }
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func (r *RecordConfig) PopulateFromString(rtype, contents, origin string) error {
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if r.Type != "" && r.Type != rtype {
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panic(fmt.Errorf("assertion failed: rtype already set (%s) (%s)", rtype, r.Type))
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}
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switch r.Type = rtype; rtype { // #rtype_variations
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case "A":
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ip := net.ParseIP(contents)
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if ip == nil || ip.To4() == nil {
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return fmt.Errorf("invalid IP in A record: %s", contents)
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}
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return r.SetTargetIP(ip) // Reformat to canonical form.
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case "AAAA":
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ip := net.ParseIP(contents)
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if ip == nil || ip.To16() == nil {
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return fmt.Errorf("invalid IP in AAAA record: %s", contents)
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}
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return r.SetTargetIP(ip) // Reformat to canonical form.
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case "ANAME", "CNAME", "NS", "PTR":
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return r.SetTarget(contents)
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case "CAA":
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return r.SetTargetCAAString(contents)
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case "DS":
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return r.SetTargetDSString(contents)
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case "MX":
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return r.SetTargetMXString(contents)
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case "NAPTR":
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return r.SetTargetNAPTRString(contents)
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case "SRV":
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return r.SetTargetSRVString(contents)
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case "SOA":
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return r.SetTargetSOAString(contents)
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case "SSHFP":
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return r.SetTargetSSHFPString(contents)
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case "TLSA":
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return r.SetTargetTLSAString(contents)
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case "TXT":
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return r.SetTargetTXTString(contents)
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default:
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return fmt.Errorf("unknown rtype (%s) when parsing (%s) domain=(%s)",
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rtype, contents, origin)
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}
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}
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