chore(deps): bump github.com/miekg/dns from 1.1.43 to 1.1.50 (#385)
Bumps [github.com/miekg/dns](https://github.com/miekg/dns) from 1.1.43 to 1.1.50. - [Release notes](https://github.com/miekg/dns/releases) - [Changelog](https://github.com/miekg/dns/blob/master/Makefile.release) - [Commits](https://github.com/miekg/dns/compare/v1.1.43...v1.1.50) --- updated-dependencies: - dependency-name: github.com/miekg/dns dependency-type: direct:production update-type: version-update:semver-patch ... Signed-off-by: dependabot[bot] <support@github.com> Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
This commit is contained in:
dependabot[bot]
GitHub
330
vendor/github.com/miekg/dns/svcb.go
generated
vendored
330
vendor/github.com/miekg/dns/svcb.go
generated
vendored
@ -4,6 +4,7 @@ import (
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"bytes"
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"encoding/binary"
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"errors"
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"fmt"
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"net"
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"sort"
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"strconv"
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@ -13,16 +14,18 @@ import (
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// SVCBKey is the type of the keys used in the SVCB RR.
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type SVCBKey uint16
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// Keys defined in draft-ietf-dnsop-svcb-https-01 Section 12.3.2.
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// Keys defined in draft-ietf-dnsop-svcb-https-08 Section 14.3.2.
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const (
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SVCB_MANDATORY SVCBKey = 0
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SVCB_ALPN SVCBKey = 1
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SVCB_NO_DEFAULT_ALPN SVCBKey = 2
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SVCB_PORT SVCBKey = 3
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SVCB_IPV4HINT SVCBKey = 4
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SVCB_ECHCONFIG SVCBKey = 5
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SVCB_IPV6HINT SVCBKey = 6
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svcb_RESERVED SVCBKey = 65535
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SVCB_MANDATORY SVCBKey = iota
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SVCB_ALPN
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SVCB_NO_DEFAULT_ALPN
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SVCB_PORT
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SVCB_IPV4HINT
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SVCB_ECHCONFIG
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SVCB_IPV6HINT
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SVCB_DOHPATH // draft-ietf-add-svcb-dns-02 Section 9
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svcb_RESERVED SVCBKey = 65535
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)
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var svcbKeyToStringMap = map[SVCBKey]string{
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@ -31,8 +34,9 @@ var svcbKeyToStringMap = map[SVCBKey]string{
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SVCB_NO_DEFAULT_ALPN: "no-default-alpn",
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SVCB_PORT: "port",
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SVCB_IPV4HINT: "ipv4hint",
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SVCB_ECHCONFIG: "echconfig",
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SVCB_ECHCONFIG: "ech",
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SVCB_IPV6HINT: "ipv6hint",
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SVCB_DOHPATH: "dohpath",
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}
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var svcbStringToKeyMap = reverseSVCBKeyMap(svcbKeyToStringMap)
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@ -167,10 +171,14 @@ func (rr *SVCB) parse(c *zlexer, o string) *ParseError {
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}
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l, _ = c.Next()
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}
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// "In AliasMode, records SHOULD NOT include any SvcParams, and recipients MUST
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// ignore any SvcParams that are present."
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// However, we don't check rr.Priority == 0 && len(xs) > 0 here
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// It is the responsibility of the user of the library to check this.
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// This is to encourage the fixing of the source of this error.
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rr.Value = xs
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if rr.Priority == 0 && len(xs) > 0 {
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return &ParseError{l.token, "SVCB aliasform can't have values", l}
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}
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return nil
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}
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@ -191,6 +199,8 @@ func makeSVCBKeyValue(key SVCBKey) SVCBKeyValue {
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return new(SVCBECHConfig)
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case SVCB_IPV6HINT:
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return new(SVCBIPv6Hint)
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case SVCB_DOHPATH:
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return new(SVCBDoHPath)
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case svcb_RESERVED:
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return nil
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default:
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@ -200,16 +210,24 @@ func makeSVCBKeyValue(key SVCBKey) SVCBKeyValue {
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}
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}
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// SVCB RR. See RFC xxxx (https://tools.ietf.org/html/draft-ietf-dnsop-svcb-https-01).
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// SVCB RR. See RFC xxxx (https://tools.ietf.org/html/draft-ietf-dnsop-svcb-https-08).
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//
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// NOTE: The HTTPS/SVCB RFCs are in the draft stage.
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// The API, including constants and types related to SVCBKeyValues, may
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// change in future versions in accordance with the latest drafts.
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type SVCB struct {
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Hdr RR_Header
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Priority uint16
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Priority uint16 // If zero, Value must be empty or discarded by the user of this library
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Target string `dns:"domain-name"`
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Value []SVCBKeyValue `dns:"pairs"` // Value must be empty if Priority is zero.
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Value []SVCBKeyValue `dns:"pairs"`
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}
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// HTTPS RR. Everything valid for SVCB applies to HTTPS as well.
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// Except that the HTTPS record is intended for use with the HTTP and HTTPS protocols.
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//
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// NOTE: The HTTPS/SVCB RFCs are in the draft stage.
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// The API, including constants and types related to SVCBKeyValues, may
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// change in future versions in accordance with the latest drafts.
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type HTTPS struct {
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SVCB
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}
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@ -235,15 +253,29 @@ type SVCBKeyValue interface {
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}
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// SVCBMandatory pair adds to required keys that must be interpreted for the RR
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// to be functional.
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// to be functional. If ignored, the whole RRSet must be ignored.
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// "port" and "no-default-alpn" are mandatory by default if present,
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// so they shouldn't be included here.
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//
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// It is incumbent upon the user of this library to reject the RRSet if
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// or avoid constructing such an RRSet that:
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// - "mandatory" is included as one of the keys of mandatory
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// - no key is listed multiple times in mandatory
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// - all keys listed in mandatory are present
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// - escape sequences are not used in mandatory
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// - mandatory, when present, lists at least one key
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//
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// Basic use pattern for creating a mandatory option:
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//
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// s := &dns.SVCB{Hdr: dns.RR_Header{Name: ".", Rrtype: dns.TypeSVCB, Class: dns.ClassINET}}
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// e := new(dns.SVCBMandatory)
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// e.Code = []uint16{65403}
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// e.Code = []uint16{dns.SVCB_ALPN}
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// s.Value = append(s.Value, e)
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// t := new(dns.SVCBAlpn)
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// t.Alpn = []string{"xmpp-client"}
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// s.Value = append(s.Value, t)
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type SVCBMandatory struct {
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Code []SVCBKey // Must not include mandatory
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Code []SVCBKey
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}
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func (*SVCBMandatory) Key() SVCBKey { return SVCB_MANDATORY }
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@ -302,7 +334,8 @@ func (s *SVCBMandatory) copy() SVCBKeyValue {
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}
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// SVCBAlpn pair is used to list supported connection protocols.
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// Protocol ids can be found at:
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// The user of this library must ensure that at least one protocol is listed when alpn is present.
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// Protocol IDs can be found at:
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// https://www.iana.org/assignments/tls-extensiontype-values/tls-extensiontype-values.xhtml#alpn-protocol-ids
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// Basic use pattern for creating an alpn option:
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//
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@ -310,13 +343,57 @@ func (s *SVCBMandatory) copy() SVCBKeyValue {
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// h.Hdr = dns.RR_Header{Name: ".", Rrtype: dns.TypeHTTPS, Class: dns.ClassINET}
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// e := new(dns.SVCBAlpn)
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// e.Alpn = []string{"h2", "http/1.1"}
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// h.Value = append(o.Value, e)
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// h.Value = append(h.Value, e)
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type SVCBAlpn struct {
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Alpn []string
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}
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func (*SVCBAlpn) Key() SVCBKey { return SVCB_ALPN }
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func (s *SVCBAlpn) String() string { return strings.Join(s.Alpn, ",") }
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func (*SVCBAlpn) Key() SVCBKey { return SVCB_ALPN }
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func (s *SVCBAlpn) String() string {
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// An ALPN value is a comma-separated list of values, each of which can be
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// an arbitrary binary value. In order to allow parsing, the comma and
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// backslash characters are themselves excaped.
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//
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// However, this escaping is done in addition to the normal escaping which
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// happens in zone files, meaning that these values must be
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// double-escaped. This looks terrible, so if you see a never-ending
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// sequence of backslash in a zone file this may be why.
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//
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// https://datatracker.ietf.org/doc/html/draft-ietf-dnsop-svcb-https-08#appendix-A.1
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var str strings.Builder
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for i, alpn := range s.Alpn {
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// 4*len(alpn) is the worst case where we escape every character in the alpn as \123, plus 1 byte for the ',' separating the alpn from others
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str.Grow(4*len(alpn) + 1)
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if i > 0 {
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str.WriteByte(',')
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}
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for j := 0; j < len(alpn); j++ {
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e := alpn[j]
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if ' ' > e || e > '~' {
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str.WriteString(escapeByte(e))
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continue
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}
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switch e {
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// We escape a few characters which may confuse humans or parsers.
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case '"', ';', ' ':
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str.WriteByte('\\')
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str.WriteByte(e)
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// The comma and backslash characters themselves must be
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// doubly-escaped. We use `\\` for the first backslash and
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// the escaped numeric value for the other value. We especially
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// don't want a comma in the output.
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case ',':
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str.WriteString(`\\\044`)
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case '\\':
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str.WriteString(`\\\092`)
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default:
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str.WriteByte(e)
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}
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}
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}
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return str.String()
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}
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func (s *SVCBAlpn) pack() ([]byte, error) {
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// Liberally estimate the size of an alpn as 10 octets
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@ -351,7 +428,47 @@ func (s *SVCBAlpn) unpack(b []byte) error {
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}
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func (s *SVCBAlpn) parse(b string) error {
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s.Alpn = strings.Split(b, ",")
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if len(b) == 0 {
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s.Alpn = []string{}
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return nil
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}
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alpn := []string{}
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a := []byte{}
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for p := 0; p < len(b); {
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c, q := nextByte(b, p)
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if q == 0 {
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return errors.New("dns: svcbalpn: unterminated escape")
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}
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p += q
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// If we find a comma, we have finished reading an alpn.
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if c == ',' {
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if len(a) == 0 {
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return errors.New("dns: svcbalpn: empty protocol identifier")
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}
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alpn = append(alpn, string(a))
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a = []byte{}
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continue
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}
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// If it's a backslash, we need to handle a comma-separated list.
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if c == '\\' {
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dc, dq := nextByte(b, p)
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if dq == 0 {
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return errors.New("dns: svcbalpn: unterminated escape decoding comma-separated list")
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}
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if dc != '\\' && dc != ',' {
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return errors.New("dns: svcbalpn: bad escaped character decoding comma-separated list")
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}
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p += dq
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c = dc
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}
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a = append(a, c)
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}
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// Add the final alpn.
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if len(a) == 0 {
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return errors.New("dns: svcbalpn: last protocol identifier empty")
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}
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s.Alpn = append(alpn, string(a))
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return nil
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}
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@ -370,9 +487,13 @@ func (s *SVCBAlpn) copy() SVCBKeyValue {
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}
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// SVCBNoDefaultAlpn pair signifies no support for default connection protocols.
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// Should be used in conjunction with alpn.
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// Basic use pattern for creating a no-default-alpn option:
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//
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// s := &dns.SVCB{Hdr: dns.RR_Header{Name: ".", Rrtype: dns.TypeSVCB, Class: dns.ClassINET}}
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// t := new(dns.SVCBAlpn)
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// t.Alpn = []string{"xmpp-client"}
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// s.Value = append(s.Value, t)
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// e := new(dns.SVCBNoDefaultAlpn)
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// s.Value = append(s.Value, e)
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type SVCBNoDefaultAlpn struct{}
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@ -385,14 +506,14 @@ func (*SVCBNoDefaultAlpn) len() int { return 0 }
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func (*SVCBNoDefaultAlpn) unpack(b []byte) error {
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if len(b) != 0 {
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return errors.New("dns: svcbnodefaultalpn: no_default_alpn must have no value")
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return errors.New("dns: svcbnodefaultalpn: no-default-alpn must have no value")
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}
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return nil
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}
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func (*SVCBNoDefaultAlpn) parse(b string) error {
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if b != "" {
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return errors.New("dns: svcbnodefaultalpn: no_default_alpn must have no value")
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return errors.New("dns: svcbnodefaultalpn: no-default-alpn must have no value")
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}
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return nil
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}
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@ -523,7 +644,7 @@ func (s *SVCBIPv4Hint) copy() SVCBKeyValue {
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}
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// SVCBECHConfig pair contains the ECHConfig structure defined in draft-ietf-tls-esni [RFC xxxx].
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// Basic use pattern for creating an echconfig option:
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// Basic use pattern for creating an ech option:
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//
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// h := new(dns.HTTPS)
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// h.Hdr = dns.RR_Header{Name: ".", Rrtype: dns.TypeHTTPS, Class: dns.ClassINET}
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@ -531,7 +652,7 @@ func (s *SVCBIPv4Hint) copy() SVCBKeyValue {
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// e.ECH = []byte{0xfe, 0x08, ...}
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// h.Value = append(h.Value, e)
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type SVCBECHConfig struct {
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ECH []byte
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ECH []byte // Specifically ECHConfigList including the redundant length prefix
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}
|
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func (*SVCBECHConfig) Key() SVCBKey { return SVCB_ECHCONFIG }
|
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@ -555,7 +676,7 @@ func (s *SVCBECHConfig) unpack(b []byte) error {
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func (s *SVCBECHConfig) parse(b string) error {
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x, err := fromBase64([]byte(b))
|
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if err != nil {
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return errors.New("dns: svcbechconfig: bad base64 echconfig")
|
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return errors.New("dns: svcbech: bad base64 ech")
|
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}
|
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s.ECH = x
|
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return nil
|
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@ -618,9 +739,6 @@ func (s *SVCBIPv6Hint) String() string {
|
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}
|
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|
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func (s *SVCBIPv6Hint) parse(b string) error {
|
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if strings.Contains(b, ".") {
|
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return errors.New("dns: svcbipv6hint: expected ipv6, got ipv4")
|
||||
}
|
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str := strings.Split(b, ",")
|
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dst := make([]net.IP, len(str))
|
||||
for i, e := range str {
|
||||
@ -628,6 +746,9 @@ func (s *SVCBIPv6Hint) parse(b string) error {
|
||||
if ip == nil {
|
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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
|
||||
@ -645,6 +766,54 @@ func (s *SVCBIPv6Hint) copy() SVCBKeyValue {
|
||||
}
|
||||
}
|
||||
|
||||
// SVCBDoHPath pair is used to indicate the URI template that the
|
||||
// clients may use to construct a DNS over HTTPS URI.
|
||||
//
|
||||
// See RFC xxxx (https://datatracker.ietf.org/doc/html/draft-ietf-add-svcb-dns-02)
|
||||
// and RFC yyyy (https://datatracker.ietf.org/doc/html/draft-ietf-add-ddr-06).
|
||||
//
|
||||
// A basic example of using the dohpath option together with the alpn
|
||||
// option to indicate support for DNS over HTTPS on a certain path:
|
||||
//
|
||||
// s := new(dns.SVCB)
|
||||
// s.Hdr = dns.RR_Header{Name: ".", Rrtype: dns.TypeSVCB, Class: dns.ClassINET}
|
||||
// e := new(dns.SVCBAlpn)
|
||||
// e.Alpn = []string{"h2", "h3"}
|
||||
// p := new(dns.SVCBDoHPath)
|
||||
// p.Template = "/dns-query{?dns}"
|
||||
// s.Value = append(s.Value, e, p)
|
||||
//
|
||||
// The parsing currently doesn't validate that Template is a valid
|
||||
// RFC 6570 URI template.
|
||||
type SVCBDoHPath struct {
|
||||
Template string
|
||||
}
|
||||
|
||||
func (*SVCBDoHPath) Key() SVCBKey { return SVCB_DOHPATH }
|
||||
func (s *SVCBDoHPath) String() string { return svcbParamToStr([]byte(s.Template)) }
|
||||
func (s *SVCBDoHPath) len() int { return len(s.Template) }
|
||||
func (s *SVCBDoHPath) pack() ([]byte, error) { return []byte(s.Template), nil }
|
||||
|
||||
func (s *SVCBDoHPath) unpack(b []byte) error {
|
||||
s.Template = string(b)
|
||||
return nil
|
||||
}
|
||||
|
||||
func (s *SVCBDoHPath) parse(b string) error {
|
||||
template, err := svcbParseParam(b)
|
||||
if err != nil {
|
||||
return fmt.Errorf("dns: svcbdohpath: %w", err)
|
||||
}
|
||||
s.Template = string(template)
|
||||
return nil
|
||||
}
|
||||
|
||||
func (s *SVCBDoHPath) copy() SVCBKeyValue {
|
||||
return &SVCBDoHPath{
|
||||
Template: s.Template,
|
||||
}
|
||||
}
|
||||
|
||||
// SVCBLocal pair is intended for experimental/private use. The key is recommended
|
||||
// to be in the range [SVCB_PRIVATE_LOWER, SVCB_PRIVATE_UPPER].
|
||||
// Basic use pattern for creating a keyNNNNN option:
|
||||
@ -661,6 +830,7 @@ type SVCBLocal struct {
|
||||
}
|
||||
|
||||
func (s *SVCBLocal) Key() SVCBKey { return s.KeyCode }
|
||||
func (s *SVCBLocal) String() string { return svcbParamToStr(s.Data) }
|
||||
func (s *SVCBLocal) pack() ([]byte, error) { return append([]byte(nil), s.Data...), nil }
|
||||
func (s *SVCBLocal) len() int { return len(s.Data) }
|
||||
|
||||
@ -669,50 +839,10 @@ func (s *SVCBLocal) unpack(b []byte) error {
|
||||
return nil
|
||||
}
|
||||
|
||||
func (s *SVCBLocal) String() string {
|
||||
var str strings.Builder
|
||||
str.Grow(4 * len(s.Data))
|
||||
for _, e := range s.Data {
|
||||
if ' ' <= e && e <= '~' {
|
||||
switch e {
|
||||
case '"', ';', ' ', '\\':
|
||||
str.WriteByte('\\')
|
||||
str.WriteByte(e)
|
||||
default:
|
||||
str.WriteByte(e)
|
||||
}
|
||||
} else {
|
||||
str.WriteString(escapeByte(e))
|
||||
}
|
||||
}
|
||||
return str.String()
|
||||
}
|
||||
|
||||
func (s *SVCBLocal) parse(b string) error {
|
||||
data := make([]byte, 0, len(b))
|
||||
for i := 0; i < len(b); {
|
||||
if b[i] != '\\' {
|
||||
data = append(data, b[i])
|
||||
i++
|
||||
continue
|
||||
}
|
||||
if i+1 == len(b) {
|
||||
return errors.New("dns: svcblocal: svcb private/experimental key escape unterminated")
|
||||
}
|
||||
if isDigit(b[i+1]) {
|
||||
if i+3 < len(b) && isDigit(b[i+2]) && isDigit(b[i+3]) {
|
||||
a, err := strconv.ParseUint(b[i+1:i+4], 10, 8)
|
||||
if err == nil {
|
||||
i += 4
|
||||
data = append(data, byte(a))
|
||||
continue
|
||||
}
|
||||
}
|
||||
return errors.New("dns: svcblocal: svcb private/experimental key bad escaped octet")
|
||||
} else {
|
||||
data = append(data, b[i+1])
|
||||
i += 2
|
||||
}
|
||||
data, err := svcbParseParam(b)
|
||||
if err != nil {
|
||||
return fmt.Errorf("dns: svcblocal: svcb private/experimental key %w", err)
|
||||
}
|
||||
s.Data = data
|
||||
return nil
|
||||
@ -753,3 +883,53 @@ func areSVCBPairArraysEqual(a []SVCBKeyValue, b []SVCBKeyValue) bool {
|
||||
}
|
||||
return true
|
||||
}
|
||||
|
||||
// svcbParamStr converts the value of an SVCB parameter into a DNS presentation-format string.
|
||||
func svcbParamToStr(s []byte) string {
|
||||
var str strings.Builder
|
||||
str.Grow(4 * len(s))
|
||||
for _, e := range s {
|
||||
if ' ' <= e && e <= '~' {
|
||||
switch e {
|
||||
case '"', ';', ' ', '\\':
|
||||
str.WriteByte('\\')
|
||||
str.WriteByte(e)
|
||||
default:
|
||||
str.WriteByte(e)
|
||||
}
|
||||
} else {
|
||||
str.WriteString(escapeByte(e))
|
||||
}
|
||||
}
|
||||
return str.String()
|
||||
}
|
||||
|
||||
// svcbParseParam parses a DNS presentation-format string into an SVCB parameter value.
|
||||
func svcbParseParam(b string) ([]byte, error) {
|
||||
data := make([]byte, 0, len(b))
|
||||
for i := 0; i < len(b); {
|
||||
if b[i] != '\\' {
|
||||
data = append(data, b[i])
|
||||
i++
|
||||
continue
|
||||
}
|
||||
if i+1 == len(b) {
|
||||
return nil, errors.New("escape unterminated")
|
||||
}
|
||||
if isDigit(b[i+1]) {
|
||||
if i+3 < len(b) && isDigit(b[i+2]) && isDigit(b[i+3]) {
|
||||
a, err := strconv.ParseUint(b[i+1:i+4], 10, 8)
|
||||
if err == nil {
|
||||
i += 4
|
||||
data = append(data, byte(a))
|
||||
continue
|
||||
}
|
||||
}
|
||||
return nil, errors.New("bad escaped octet")
|
||||
} else {
|
||||
data = append(data, b[i+1])
|
||||
i += 2
|
||||
}
|
||||
}
|
||||
return data, nil
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user