73 lines
1.7 KiB
Go
73 lines
1.7 KiB
Go
/*
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* Copyright (c) 2013-2014 by Farsight Security, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package dnstap
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import (
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"io"
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"log"
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"os"
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"github.com/farsightsec/golang-framestream"
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)
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type FrameStreamInput struct {
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wait chan bool
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decoder *framestream.Decoder
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}
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func NewFrameStreamInput(r io.ReadWriter, bi bool) (input *FrameStreamInput, err error) {
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input = new(FrameStreamInput)
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decoderOptions := framestream.DecoderOptions{
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ContentType: FSContentType,
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Bidirectional: bi,
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}
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input.decoder, err = framestream.NewDecoder(r, &decoderOptions)
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if err != nil {
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return
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}
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input.wait = make(chan bool)
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return
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}
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func NewFrameStreamInputFromFilename(fname string) (input *FrameStreamInput, err error) {
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file, err := os.Open(fname)
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if err != nil {
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return nil, err
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}
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input, err = NewFrameStreamInput(file, false)
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return
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}
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func (input *FrameStreamInput) ReadInto(output chan []byte) {
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for {
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buf, err := input.decoder.Decode()
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if err != nil {
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if err != io.EOF {
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log.Printf("framestream.Decoder.Decode() failed: %s\n", err)
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}
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break
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}
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newbuf := make([]byte, len(buf))
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copy(newbuf, buf)
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output <- newbuf
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}
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close(input.wait)
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}
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func (input *FrameStreamInput) Wait() {
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<-input.wait
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}
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