crash on IPFIX + DPI produced by YAF

[rouge8]

I created some IPFIX records with yaf:

yaf --live pcap --in en7 --plugin-name=/usr/local/lib/yaf/dpacketplugin.so --applabel --max-payload=1024 --out flows.ipfix

However, they crash ipfixcat:

$ cat flows.ipfix | ~/Desktop/ipfixcat-v0.2.2/ipfixcat > flows-no-dict.json
2013/11/21 17:07:12 ipfixcat v0.2.2
2013/11/21 17:07:12 EOF
2013/11/21 17:07:12 EOF
2013/11/21 17:07:12 EOF
panic: EOF

goroutine 3 [running]:
runtime.panic(0xe6880, 0x2102f0070)
    /usr/local/go/src/pkg/runtime/panic.c:266 +0xb6
main.func·001()
    /Users/jb/src/github.com/calmh/ipfixcat/main.go:40 +0xd2
created by main.messagesGenerator
    /Users/jb/src/github.com/calmh/ipfixcat/main.go:62 +0xf6

goroutine 1 [runnable]:
bytes.makeSlice(0x501, 0x0, 0x0, 0x0)
    /usr/local/go/src/pkg/bytes/buffer.go:191 +0x63
bytes.(*Buffer).grow(0x210676370, 0x5, 0x8a9f8)
    /usr/local/go/src/pkg/bytes/buffer.go:99 +0x200
bytes.(*Buffer).WriteString(0x210676370, 0x1144b6, 0x5, 0x0, 0x0, ...)
    /usr/local/go/src/pkg/bytes/buffer.go:136 +0x4b
encoding/json.(*encodeState).string(0x210676370, 0x1144b6, 0x5, 0x0, 0x1, ...)
    /usr/local/go/src/pkg/encoding/json/encode.go:857 +0x122
encoding/json.(*structEncoder).encode(0x210305f00, 0x210676370, 0xf65e0, 0x2105cbc40, 0x196, ...)
    /usr/local/go/src/pkg/encoding/json/encode.go:588 +0x1f6
encoding/json.*structEncoder.(encoding/json.encode)·fm(0x210676370, 0xf65e0, 0x2105cbc40, 0x196, 0xf6500)
    /usr/local/go/src/pkg/encoding/json/encode.go:604 +0x58
encoding/json.(*arrayEncoder).encode(0x2104f07e0, 0x210676370, 0xbc0c0, 0x21067f188, 0x172, ...)
    /usr/local/go/src/pkg/encoding/json/encode.go:693 +0x103
encoding/json.*arrayEncoder.(encoding/json.encode)·fm(0x210676370, 0xbc0c0, 0x21067f188, 0x172, 0x0)
    /usr/local/go/src/pkg/encoding/json/encode.go:700 +0x58
encoding/json.(*sliceEncoder).encode(0x2104f07e8, 0x210676370, 0xbc0c0, 0x21067f188, 0x172, ...)
    /usr/local/go/src/pkg/encoding/json/encode.go:670 +0xb5
encoding/json.*sliceEncoder.(encoding/json.encode)·fm(0x210676370, 0xbc0c0, 0x21067f188, 0x172, 0x0)
    /usr/local/go/src/pkg/encoding/json/encode.go:679 +0x58
encoding/json.(*structEncoder).encode(0x210305db0, 0x210676370, 0xf1080, 0x21067f180, 0x192, ...)
    /usr/local/go/src/pkg/encoding/json/encode.go:590 +0x277
encoding/json.*structEncoder.(encoding/json.encode)·fm(0x210676370, 0xf1080, 0x21067f180, 0x192, 0x0)
    /usr/local/go/src/pkg/encoding/json/encode.go:604 +0x58
encoding/json.(*encodeState).reflectValue(0x210676370, 0xf1080, 0x21067f180, 0x192)
    /usr/local/go/src/pkg/encoding/json/encode.go:305 +0x71
encoding/json.(*encodeState).marshal(0x210676370, 0xf1080, 0x21067f180, 0x0, 0x0)
    /usr/local/go/src/pkg/encoding/json/encode.go:276 +0xa6
encoding/json.Marshal(0xf1080, 0x21067f180, 0x2105cba00, 0x13, 0x13, ...)
    /usr/local/go/src/pkg/encoding/json/encode.go:132 +0x6c
main.main()
    /Users/jb/src/github.com/calmh/ipfixcat/main.go:118 +0x93e

I've uploaded the IPFIX sample as a gist.

[calmh]

Ah. Yeah. That's not so much it crashing on the stream, as it lacking an end condition and misinterpreting the end of the stream as an error. I'll fix that, thanks.

[rouge8]

Ah, you're right. I initially ran it on a different file on a different machine and didn't get the extended traceback, so I thought this was a different error.

Thanks!