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authorOndrej Fabry <ofabry@cisco.com>2019-01-10 10:57:50 +0100
committerOndrej Fabry <ofabry@cisco.com>2019-01-10 11:05:35 +0100
commit08266e35878f198e2fa59fcfc9f0fc3a4b1dfbf5 (patch)
tree1269acfc3bf6fdd47414eb64da3ecad4865e37d6 /vendor/github.com/google/gopacket/examples/httpassembly
parent3ef6f210edcf7dd753733d46ec3f2dd5dc795b61 (diff)
Add support for string types
- strings are now generated as two fields for length and string itself - aliases are now sorted by name to prevent generating different code - dependencies are now managed by dep - binapi files are regenerated using VPP 19.01-rc0~622-g7b01e9e8 - old stats binary api has been deprecated and removed from VPP Change-Id: Ieb8515c73021339a45f407386f8e3d87dcf4469e Signed-off-by: Ondrej Fabry <ofabry@cisco.com>
Diffstat (limited to 'vendor/github.com/google/gopacket/examples/httpassembly')
-rw-r--r--vendor/github.com/google/gopacket/examples/httpassembly/main.go127
1 files changed, 0 insertions, 127 deletions
diff --git a/vendor/github.com/google/gopacket/examples/httpassembly/main.go b/vendor/github.com/google/gopacket/examples/httpassembly/main.go
deleted file mode 100644
index 02af21e..0000000
--- a/vendor/github.com/google/gopacket/examples/httpassembly/main.go
+++ /dev/null
@@ -1,127 +0,0 @@
-// Copyright 2012 Google, Inc. All rights reserved.
-//
-// Use of this source code is governed by a BSD-style license
-// that can be found in the LICENSE file in the root of the source
-// tree.
-
-// This binary provides sample code for using the gopacket TCP assembler and TCP
-// stream reader. It reads packets off the wire and reconstructs HTTP requests
-// it sees, logging them.
-package main
-
-import (
- "bufio"
- "flag"
- "io"
- "log"
- "net/http"
- "time"
-
- "github.com/google/gopacket"
- "github.com/google/gopacket/examples/util"
- "github.com/google/gopacket/layers"
- "github.com/google/gopacket/pcap"
- "github.com/google/gopacket/tcpassembly"
- "github.com/google/gopacket/tcpassembly/tcpreader"
-)
-
-var iface = flag.String("i", "eth0", "Interface to get packets from")
-var fname = flag.String("r", "", "Filename to read from, overrides -i")
-var snaplen = flag.Int("s", 1600, "SnapLen for pcap packet capture")
-var filter = flag.String("f", "tcp and dst port 80", "BPF filter for pcap")
-var logAllPackets = flag.Bool("v", false, "Logs every packet in great detail")
-
-// Build a simple HTTP request parser using tcpassembly.StreamFactory and tcpassembly.Stream interfaces
-
-// httpStreamFactory implements tcpassembly.StreamFactory
-type httpStreamFactory struct{}
-
-// httpStream will handle the actual decoding of http requests.
-type httpStream struct {
- net, transport gopacket.Flow
- r tcpreader.ReaderStream
-}
-
-func (h *httpStreamFactory) New(net, transport gopacket.Flow) tcpassembly.Stream {
- hstream := &httpStream{
- net: net,
- transport: transport,
- r: tcpreader.NewReaderStream(),
- }
- go hstream.run() // Important... we must guarantee that data from the reader stream is read.
-
- // ReaderStream implements tcpassembly.Stream, so we can return a pointer to it.
- return &hstream.r
-}
-
-func (h *httpStream) run() {
- buf := bufio.NewReader(&h.r)
- for {
- req, err := http.ReadRequest(buf)
- if err == io.EOF {
- // We must read until we see an EOF... very important!
- return
- } else if err != nil {
- log.Println("Error reading stream", h.net, h.transport, ":", err)
- } else {
- bodyBytes := tcpreader.DiscardBytesToEOF(req.Body)
- req.Body.Close()
- log.Println("Received request from stream", h.net, h.transport, ":", req, "with", bodyBytes, "bytes in request body")
- }
- }
-}
-
-func main() {
- defer util.Run()()
- var handle *pcap.Handle
- var err error
-
- // Set up pcap packet capture
- if *fname != "" {
- log.Printf("Reading from pcap dump %q", *fname)
- handle, err = pcap.OpenOffline(*fname)
- } else {
- log.Printf("Starting capture on interface %q", *iface)
- handle, err = pcap.OpenLive(*iface, int32(*snaplen), true, pcap.BlockForever)
- }
- if err != nil {
- log.Fatal(err)
- }
-
- if err := handle.SetBPFFilter(*filter); err != nil {
- log.Fatal(err)
- }
-
- // Set up assembly
- streamFactory := &httpStreamFactory{}
- streamPool := tcpassembly.NewStreamPool(streamFactory)
- assembler := tcpassembly.NewAssembler(streamPool)
-
- log.Println("reading in packets")
- // Read in packets, pass to assembler.
- packetSource := gopacket.NewPacketSource(handle, handle.LinkType())
- packets := packetSource.Packets()
- ticker := time.Tick(time.Minute)
- for {
- select {
- case packet := <-packets:
- // A nil packet indicates the end of a pcap file.
- if packet == nil {
- return
- }
- if *logAllPackets {
- log.Println(packet)
- }
- if packet.NetworkLayer() == nil || packet.TransportLayer() == nil || packet.TransportLayer().LayerType() != layers.LayerTypeTCP {
- log.Println("Unusable packet")
- continue
- }
- tcp := packet.TransportLayer().(*layers.TCP)
- assembler.AssembleWithTimestamp(packet.NetworkLayer().NetworkFlow(), tcp, packet.Metadata().Timestamp)
-
- case <-ticker:
- // Every minute, flush connections that haven't seen activity in the past 2 minutes.
- assembler.FlushOlderThan(time.Now().Add(time.Minute * -2))
- }
- }
-}