// See the file "COPYING" in the main distribution directory for copyright.

//

// TODO: This is preliminary code that's not yet functional and not

// activated. We don't yet support SIP-over-TCP.

#include "zeek/analyzer/protocol/sip/SIP_TCP.h"

#include "zeek/analyzer/protocol/tcp/TCP_Reassembler.h"

namespace zeek::analyzer::sip_tcp {

SIP_Analyzer::SIP_Analyzer(Connection* conn) : analyzer::tcp::TCP_ApplicationAnalyzer("SIP_TCP", conn) {

    interp = new binpac::SIP_TCP::SIP_Conn(this);

    had_gap = false;

}

SIP_Analyzer::~SIP_Analyzer() { delete interp; }

void SIP_Analyzer::Done() {

    analyzer::tcp::TCP_ApplicationAnalyzer::Done();

    interp->FlowEOF(true);

    interp->FlowEOF(false);

}

void SIP_Analyzer::EndpointEOF(bool is_orig) {

    analyzer::tcp::TCP_ApplicationAnalyzer::EndpointEOF(is_orig);

    interp->FlowEOF(is_orig);

}

void SIP_Analyzer::DeliverStream(int len, const u_char* data, bool orig) {

    analyzer::tcp::TCP_ApplicationAnalyzer::DeliverStream(len, data, orig);

    if ( TCP() && 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 ) {

        AnalyzerViolation(util::fmt("Binpac exception: %s", e.c_msg()));

    }

}

void SIP_Analyzer::Undelivered(uint64_t seq, int len, bool orig) {

    analyzer::tcp::TCP_ApplicationAnalyzer::Undelivered(seq, len, orig);

    had_gap = true;

    interp->NewGap(orig, len);

}

} // namespace zeek::analyzer::sip_tcp