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-rw-r--r--vendor/golang.org/x/net/icmp/paramprob.go63
1 files changed, 63 insertions, 0 deletions
diff --git a/vendor/golang.org/x/net/icmp/paramprob.go b/vendor/golang.org/x/net/icmp/paramprob.go
new file mode 100644
index 0000000..8587255
--- /dev/null
+++ b/vendor/golang.org/x/net/icmp/paramprob.go
@@ -0,0 +1,63 @@
+// Copyright 2014 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package icmp
+
+import (
+ "encoding/binary"
+ "golang.org/x/net/internal/iana"
+)
+
+// A ParamProb represents an ICMP parameter problem message body.
+type ParamProb struct {
+ Pointer uintptr // offset within the data where the error was detected
+ Data []byte // data, known as original datagram field
+ Extensions []Extension // extensions
+}
+
+// Len implements the Len method of MessageBody interface.
+func (p *ParamProb) Len(proto int) int {
+ if p == nil {
+ return 0
+ }
+ l, _ := multipartMessageBodyDataLen(proto, true, p.Data, p.Extensions)
+ return 4 + l
+}
+
+// Marshal implements the Marshal method of MessageBody interface.
+func (p *ParamProb) Marshal(proto int) ([]byte, error) {
+ if proto == iana.ProtocolIPv6ICMP {
+ b := make([]byte, p.Len(proto))
+ binary.BigEndian.PutUint32(b[:4], uint32(p.Pointer))
+ copy(b[4:], p.Data)
+ return b, nil
+ }
+ b, err := marshalMultipartMessageBody(proto, true, p.Data, p.Extensions)
+ if err != nil {
+ return nil, err
+ }
+ b[0] = byte(p.Pointer)
+ return b, nil
+}
+
+// parseParamProb parses b as an ICMP parameter problem message body.
+func parseParamProb(proto int, typ Type, b []byte) (MessageBody, error) {
+ if len(b) < 4 {
+ return nil, errMessageTooShort
+ }
+ p := &ParamProb{}
+ if proto == iana.ProtocolIPv6ICMP {
+ p.Pointer = uintptr(binary.BigEndian.Uint32(b[:4]))
+ p.Data = make([]byte, len(b)-4)
+ copy(p.Data, b[4:])
+ return p, nil
+ }
+ p.Pointer = uintptr(b[0])
+ var err error
+ p.Data, p.Extensions, err = parseMultipartMessageBody(proto, typ, b)
+ if err != nil {
+ return nil, err
+ }
+ return p, nil
+}