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Allow pcap pktsrc to use other BPF_Program::Compile method

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This commit is contained in:
Tim Wojtulewicz 2022-05-23 17:36:09 -07:00
parent 515e5bf8a3
commit b30d5702f6
6 changed files with 60 additions and 33 deletions
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19
src/iosource/pcap/Source.cc
View file

@ -268,6 +268,25 @@ bool PcapSource::PrecompileFilter(int index, const std::string& filter)
return PktSrc::PrecompileBPFFilter(index, filter);
}
detail::BPF_Program* PcapSource::CompileFilter(const std::string& filter)
{
std::string errbuf;
auto code = std::make_unique<detail::BPF_Program>();
if ( ! code->Compile(pd, filter.c_str(), Netmask(), errbuf) )
{
std::string msg = util::fmt("cannot compile BPF filter \"%s\"", filter.c_str());
if ( ! errbuf.empty() )
msg += ": " + errbuf;
Error(msg);
return nullptr;
}
return code.release();
}
bool PcapSource::SetFilter(int index)
{
if ( ! pd )

1
src/iosource/pcap/Source.h
View file

@ -31,6 +31,7 @@ protected:
bool PrecompileFilter(int index, const std::string& filter) override;
bool SetFilter(int index) override;
void Statistics(Stats* stats) override;
detail::BPF_Program* CompileFilter(const std::string& filter) override;
private:
void OpenLive();