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

#include "zeek/analyzer/protocol/dce-rpc/DCE_RPC.h"

#include <cstdlib>

using namespace std;

namespace zeek::analyzer::dce_rpc {

DCE_RPC_Analyzer::DCE_RPC_Analyzer(Connection* conn) : analyzer::tcp::TCP_ApplicationAnalyzer("DCE_RPC", conn) {
    had_gap = false;
    interp = new binpac::DCE_RPC::DCE_RPC_Conn(this);
}

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

void DCE_RPC_Analyzer::Done() {
    TCP_ApplicationAnalyzer::Done();

    interp->FlowEOF(true);
    interp->FlowEOF(false);
}

void DCE_RPC_Analyzer::EndpointEOF(bool is_orig) {
    TCP_ApplicationAnalyzer::EndpointEOF(is_orig);
    interp->FlowEOF(is_orig);
}

void DCE_RPC_Analyzer::Undelivered(uint64_t seq, int len, bool orig) {
    TCP_ApplicationAnalyzer::Undelivered(seq, len, orig);
    had_gap = true;
    interp->NewGap(orig, len);
}

void DCE_RPC_Analyzer::DeliverStream(int len, const u_char* data, bool orig) {
    TCP_ApplicationAnalyzer::DeliverStream(len, data, orig);

    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()));
    }
}

} // namespace zeek::analyzer::dce_rpc
