mirror of https://github.com/dirtbags/fluffy.git
78 lines
1.1 KiB
Go
78 lines
1.1 KiB
Go
package main
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//package pcap
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import (
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"time"
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"os"
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"fmt"
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"io"
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"encoding/binary"
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)
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const MAGIC = 0xa1b2c3d4
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const MAXFRAME = 9000
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const LINKTYPE_ETHERNET = 1
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const LINKTYPE_RAW = 101
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type Frame struct {
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ts time.Time
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caplen uint32
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framelen uint32
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payload string
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}
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type FileHeader struct {
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VersionMajor uint16
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VersionMinor uint16
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ThisZone int32
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SigFigs uint32
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SnapLen int32
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LinkType int32
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}
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type PcapFile struct {
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order binary.ByteOrder
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header FileHeader
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}
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type Reader struct {
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PcapFile
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r io.Reader
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}
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type Writer struct {
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PcapFile
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w io.Writer
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}
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func NewReader(r io.Reader) (*Reader, error) {
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var h FileHeader
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var magic uint32
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var order binary.ByteOrder = binary.BigEndian
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if err := binary.Read(r, order, &magic); err != nil {
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return nil, err
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}
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if magic != MAGIC {
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order = binary.LittleEndian
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}
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if err := binary.Read(r, order, &h); err != nil {
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return nil, err
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}
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ret := &Reader{PcapFile{order, h}, r}
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return ret, nil
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}
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func main() {
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r, err := NewReader(os.Stdin)
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if err != nil {
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panic(err)
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}
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fmt.Println(r.order, r.header)
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}
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