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Update miekg/dns

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This commit is contained in:
Frank Denis 2022-04-03 23:08:29 +02:00
parent 66f019d886
commit 77dc3b1e85
13 changed files with 113 additions and 52 deletions
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80
vendor/github.com/miekg/dns/svcb.go generated vendored
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@ -13,16 +13,17 @@ import (
// SVCBKey is the type of the keys used in the SVCB RR.
type SVCBKey uint16
// Keys defined in draft-ietf-dnsop-svcb-https-01 Section 12.3.2.
// Keys defined in draft-ietf-dnsop-svcb-https-08 Section 14.3.2.
const (
SVCB_MANDATORY SVCBKey = 0
SVCB_ALPN SVCBKey = 1
SVCB_NO_DEFAULT_ALPN SVCBKey = 2
SVCB_PORT SVCBKey = 3
SVCB_IPV4HINT SVCBKey = 4
SVCB_ECHCONFIG SVCBKey = 5
SVCB_IPV6HINT SVCBKey = 6
svcb_RESERVED SVCBKey = 65535
SVCB_MANDATORY SVCBKey = iota
SVCB_ALPN
SVCB_NO_DEFAULT_ALPN
SVCB_PORT
SVCB_IPV4HINT
SVCB_ECHCONFIG
SVCB_IPV6HINT
svcb_RESERVED SVCBKey = 65535
)
var svcbKeyToStringMap = map[SVCBKey]string{
@ -31,7 +32,7 @@ var svcbKeyToStringMap = map[SVCBKey]string{
SVCB_NO_DEFAULT_ALPN: "no-default-alpn",
SVCB_PORT: "port",
SVCB_IPV4HINT: "ipv4hint",
SVCB_ECHCONFIG: "echconfig",
SVCB_ECHCONFIG: "ech",
SVCB_IPV6HINT: "ipv6hint",
}
@ -167,10 +168,14 @@ func (rr *SVCB) parse(c *zlexer, o string) *ParseError {
}
l, _ = c.Next()
}
// "In AliasMode, records SHOULD NOT include any SvcParams, and recipients MUST
// ignore any SvcParams that are present."
// However, we don't check rr.Priority == 0 && len(xs) > 0 here
// It is the responsibility of the user of the library to check this.
// This is to encourage the fixing of the source of this error.
rr.Value = xs
if rr.Priority == 0 && len(xs) > 0 {
return &ParseError{l.token, "SVCB aliasform can't have values", l}
}
return nil
}
@ -200,12 +205,12 @@ func makeSVCBKeyValue(key SVCBKey) SVCBKeyValue {
}
}
// SVCB RR. See RFC xxxx (https://tools.ietf.org/html/draft-ietf-dnsop-svcb-https-01).
// SVCB RR. See RFC xxxx (https://tools.ietf.org/html/draft-ietf-dnsop-svcb-https-08).
type SVCB struct {
Hdr RR_Header
Priority uint16
Priority uint16 // If zero, Value must be empty or discarded by the user of this library
Target string `dns:"domain-name"`
Value []SVCBKeyValue `dns:"pairs"` // Value must be empty if Priority is zero.
Value []SVCBKeyValue `dns:"pairs"`
}
// HTTPS RR. Everything valid for SVCB applies to HTTPS as well.
@ -235,15 +240,29 @@ type SVCBKeyValue interface {
}
// SVCBMandatory pair adds to required keys that must be interpreted for the RR
// to be functional.
// to be functional. If ignored, the whole RRSet must be ignored.
// "port" and "no-default-alpn" are mandatory by default if present,
// so they shouldn't be included here.
//
// It is incumbent upon the user of this library to reject the RRSet if
// or avoid constructing such an RRSet that:
// - "mandatory" is included as one of the keys of mandatory
// - no key is listed multiple times in mandatory
// - all keys listed in mandatory are present
// - escape sequences are not used in mandatory
// - mandatory, when present, lists at least one key
//
// Basic use pattern for creating a mandatory option:
//
// s := &dns.SVCB{Hdr: dns.RR_Header{Name: ".", Rrtype: dns.TypeSVCB, Class: dns.ClassINET}}
// e := new(dns.SVCBMandatory)
// e.Code = []uint16{65403}
// e.Code = []uint16{dns.SVCB_ALPN}
// s.Value = append(s.Value, e)
// t := new(dns.SVCBAlpn)
// t.Alpn = []string{"xmpp-client"}
// s.Value = append(s.Value, t)
type SVCBMandatory struct {
Code []SVCBKey // Must not include mandatory
Code []SVCBKey
}
func (*SVCBMandatory) Key() SVCBKey { return SVCB_MANDATORY }
@ -302,7 +321,8 @@ func (s *SVCBMandatory) copy() SVCBKeyValue {
}
// SVCBAlpn pair is used to list supported connection protocols.
// Protocol ids can be found at:
// The user of this library must ensure that at least one protocol is listed when alpn is present.
// Protocol IDs can be found at:
// https://www.iana.org/assignments/tls-extensiontype-values/tls-extensiontype-values.xhtml#alpn-protocol-ids
// Basic use pattern for creating an alpn option:
//
@ -370,9 +390,13 @@ func (s *SVCBAlpn) copy() SVCBKeyValue {
}
// SVCBNoDefaultAlpn pair signifies no support for default connection protocols.
// Should be used in conjunction with alpn.
// Basic use pattern for creating a no-default-alpn option:
//
// s := &dns.SVCB{Hdr: dns.RR_Header{Name: ".", Rrtype: dns.TypeSVCB, Class: dns.ClassINET}}
// t := new(dns.SVCBAlpn)
// t.Alpn = []string{"xmpp-client"}
// s.Value = append(s.Value, t)
// e := new(dns.SVCBNoDefaultAlpn)
// s.Value = append(s.Value, e)
type SVCBNoDefaultAlpn struct{}
@ -385,14 +409,14 @@ func (*SVCBNoDefaultAlpn) len() int { return 0 }
func (*SVCBNoDefaultAlpn) unpack(b []byte) error {
if len(b) != 0 {
return errors.New("dns: svcbnodefaultalpn: no_default_alpn must have no value")
return errors.New("dns: svcbnodefaultalpn: no-default-alpn must have no value")
}
return nil
}
func (*SVCBNoDefaultAlpn) parse(b string) error {
if b != "" {
return errors.New("dns: svcbnodefaultalpn: no_default_alpn must have no value")
return errors.New("dns: svcbnodefaultalpn: no-default-alpn must have no value")
}
return nil
}
@ -523,7 +547,7 @@ func (s *SVCBIPv4Hint) copy() SVCBKeyValue {
}
// SVCBECHConfig pair contains the ECHConfig structure defined in draft-ietf-tls-esni [RFC xxxx].
// Basic use pattern for creating an echconfig option:
// Basic use pattern for creating an ech option:
//
// h := new(dns.HTTPS)
// h.Hdr = dns.RR_Header{Name: ".", Rrtype: dns.TypeHTTPS, Class: dns.ClassINET}
@ -531,7 +555,7 @@ func (s *SVCBIPv4Hint) copy() SVCBKeyValue {
// e.ECH = []byte{0xfe, 0x08, ...}
// h.Value = append(h.Value, e)
type SVCBECHConfig struct {
ECH []byte
ECH []byte // Specifically ECHConfigList including the redundant length prefix
}
func (*SVCBECHConfig) Key() SVCBKey { return SVCB_ECHCONFIG }
@ -555,7 +579,7 @@ func (s *SVCBECHConfig) unpack(b []byte) error {
func (s *SVCBECHConfig) parse(b string) error {
x, err := fromBase64([]byte(b))
if err != nil {
return errors.New("dns: svcbechconfig: bad base64 echconfig")
return errors.New("dns: svcbech: bad base64 ech")
}
s.ECH = x
return nil
@ -618,9 +642,6 @@ func (s *SVCBIPv6Hint) String() string {
}
func (s *SVCBIPv6Hint) parse(b string) error {
if strings.Contains(b, ".") {
return errors.New("dns: svcbipv6hint: expected ipv6, got ipv4")
}
str := strings.Split(b, ",")
dst := make([]net.IP, len(str))
for i, e := range str {
@ -628,6 +649,9 @@ func (s *SVCBIPv6Hint) parse(b string) error {
if ip == nil {
return errors.New("dns: svcbipv6hint: bad ip")
}
if ip.To4() != nil {
return errors.New("dns: svcbipv6hint: expected ipv6, got ipv4-mapped-ipv6")
}
dst[i] = ip
}
s.Hint = dst