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Add test case for binpac flowbuffer frame length parsing bug

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This commit is contained in:
Jon Siwek 2020-03-19 22:09:23 -07:00
parent e2aeb70efc
commit 7e57f0788c
13 changed files with 265 additions and 1 deletions
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65
testing/btest/plugins/binpac-flowbuffer-frame-length-plugin/src/FOO.cc Normal file
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#include "FOO.h"
#include "analyzer/protocol/tcp/TCP_Reassembler.h"
#include "Reporter.h"
#include "foo.bif.h"
using namespace analyzer::FOO;
FOO_Analyzer::FOO_Analyzer(Connection* c) : tcp::TCP_ApplicationAnalyzer("FOO", c)
{
interp = new binpac::FOO::FOO_Conn(this);
had_gap = false;
}
FOO_Analyzer::~FOO_Analyzer()
{
delete interp;
}
void FOO_Analyzer::Done()
{
tcp::TCP_ApplicationAnalyzer::Done();
interp->FlowEOF(true);
interp->FlowEOF(false);
}
void FOO_Analyzer::EndpointEOF(bool is_orig)
{
tcp::TCP_ApplicationAnalyzer::EndpointEOF(is_orig);
interp->FlowEOF(is_orig);
}
void FOO_Analyzer::DeliverStream(int len, const u_char* data, bool orig)
{
tcp::TCP_ApplicationAnalyzer::DeliverStream(len, data, orig);
assert(TCP());
if ( TCP()->IsPartial() )
return;
if ( had_gap )
// If only one side had a content gap, we could still try to
// deliver data to the other side if the script layer can handle this.
return;
try
{
interp->NewData(orig, data, data + len);
}
catch ( const binpac::Exception& e )
{
printf("Exception: %s\n", e.c_msg());
ProtocolViolation(fmt("Binpac exception: %s", e.c_msg()));
}
}
void FOO_Analyzer::Undelivered(uint64_t seq, int len, bool orig)
{
tcp::TCP_ApplicationAnalyzer::Undelivered(seq, len, orig);
had_gap = true;
interp->NewGap(orig, len);
}