dnscontrol/models/t_soa.go
Tom Limoncelli 9812ecd9ff
BIND: Improve SOA serial number handling (#651)
* github.com/miekg/dns
* Greatly simplify the logic for handling serial numbers. Related code was all over the place. Now it is abstracted into one testable method makeSoa. This simplifies code in many other places.
* Update docs/_providers/bind.md: Edit old text. Add SOA description.
* SOA records are now treated like any other record internally. You still can't specify them in dnsconfig.js, but that's by design.
* The URL for issue 491 was wrong in many places
* BIND: Clarify GENERATE_ZONEFILE message
2020-02-23 13:58:49 -05:00

78 lines
2.1 KiB
Go

package models
import (
"fmt"
"strconv"
"strings"
)
/*
Providers are not expected to support this record.
Most providers do not support SOA records. They generate them
dynamically behind the scenes. Providers like BIND (which is
software, not SaaS), must handle SOA records and emulate the dynamic
work that providers do.
*/
// SetTargetSOA sets the SOA fields.
func (rc *RecordConfig) SetTargetSOA(ns, mbox string, serial, refresh, retry, expire, minttl uint32) error {
rc.SetTarget(ns) // The NS field is stored as the .Target
rc.SoaMbox = mbox
rc.SoaSerial = serial
rc.SoaRefresh = refresh
rc.SoaRetry = retry
rc.SoaExpire = expire
rc.SoaMinttl = minttl
if rc.Type == "" {
rc.Type = "SOA"
}
if rc.Type != "SOA" {
panic("assertion failed: SetTargetSOA called when .Type is not SOA")
}
return nil
}
// SetTargetSOAStrings is like SetTargetSOA but accepts strings.
func (rc *RecordConfig) SetTargetSOAStrings(ns, mbox, serial, refresh, retry, expire, minttl string) error {
u32serial, err := strconv.ParseUint(serial, 10, 32)
if err != nil {
return fmt.Errorf("SOA serial '%v' is invalid: %w", serial, err)
}
u32refresh, err := strconv.ParseUint(refresh, 10, 32)
if err != nil {
return fmt.Errorf("SOA refresh '%v' is invalid: %w", refresh, err)
}
u32retry, err := strconv.ParseUint(retry, 10, 32)
if err != nil {
return fmt.Errorf("SOA retry '%v' is invalid: %w", retry, err)
}
u32expire, err := strconv.ParseUint(expire, 10, 32)
if err != nil {
return fmt.Errorf("SOA expire '%v' is invalid: %w", expire, err)
}
u32minttl, err := strconv.ParseUint(minttl, 10, 32)
if err != nil {
return fmt.Errorf("SOA minttl '%v' is invalid: %w", minttl, err)
}
return rc.SetTargetSOA(ns, mbox, uint32(u32serial), uint32(u32refresh), uint32(u32retry), uint32(u32expire), uint32(u32minttl))
}
// SetTargetSOAString is like SetTargetSOA but accepts one big string.
func (rc *RecordConfig) SetTargetSOAString(s string) error {
part := strings.Fields(s)
if len(part) != 7 {
return fmt.Errorf("SOA value does not contain 7 fields: (%#v)", s)
}
return rc.SetTargetSOAStrings(part[0], part[1], part[2], part[3], part[4], part[5], part[6])
}