1 files changed, 101 insertions, 0 deletions
diff --git a/VNFs/DPPD-PROX/tools/flow_extract/halfstream.cpp b/VNFs/DPPD-PROX/tools/flow_extract/halfstream.cpp
new file mode 100644
index 00000000..7d8f1fe2
--- /dev/null
+++ b/VNFs/DPPD-PROX/tools/flow_extract/halfstream.cpp
@@ -0,0 +1,101 @@
+/*
+// Copyright (c) 2010-2017 Intel Corporation
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+*/
+
+#include <fstream>
+#include <arpa/inet.h>
+
+#include "halfstream.hpp"
+
+HalfStream::Action::Part HalfStream::addPkt(const PcapPkt &pkt)
+{
+	const uint32_t pktId = pkts.size();
+	const uint8_t *l5;
+	uint32_t l5Len;
+	uint16_t tmpHdrLen;
+
+	const struct PcapPkt::tcp_hdr *tcp;
+
+	struct pkt_tuple pt = pkt.parsePkt((const uint8_t **)&tcp, &tmpHdrLen, &l5, &l5Len);
+
+	if (pt.proto_id == IPPROTO_TCP) {
+		if (tcp->tcp_flags & 0x02)
+			tcpOpen = true;
+		if (tcp->tcp_flags & 0x01)
+			tcpClose = true;
+	}
+
+	if (pkts.empty()) {
+		first = pkt.ts();
+		hdrLen = tmpHdrLen;
+		memcpy(hdr, pkt.payload(), hdrLen);
+	}
+	last = pkt.ts();
+	totLen += pkt.len();
+	contentLen += l5Len;
+
+	pkts.push_back(pkt);
+
+	return Action::Part(pktId, l5 - pkt.payload(), l5Len);
+}
+
+double HalfStream::getRate() const
+{
+	if (pkts.empty())
+		return 0;
+	if (first == last)
+		return 1250000000;
+
+	return totLen / (last - first);
+}
+
+HalfStream::Action::Action(HalfStream* stream, const Part &p, bool isClient)
+	: halfStream(stream), m_isClient(isClient)
+{
+	addPart(p);
+}
+
+void HalfStream::Action::addPart(const Part &p)
+{
+	parts.push_back(p);
+}
+
+uint32_t HalfStream::Action::totLen() const
+{
+	uint32_t ret = 0;
+
+	for (list<Part>::const_iterator i = parts.begin(); i != parts.end(); ++i) {
+		ret += (*i).len;
+	}
+
+	return ret;
+}
+
+void HalfStream::Action::toFile(ofstream *f) const
+{
+	for (list<Part>::const_iterator i = parts.begin(); i != parts.end(); ++i) {
+		const PcapPkt &pkt = halfStream->pkts[i->pktId];
+		const uint8_t *payload = &pkt.payload()[i->offset];
+		const uint16_t len = i->len;
+
+		f->write((const char *)payload, len);
+	}
+}
+
+HalfStream::HalfStream()
+	: first(0, 0), last(0, 0), totLen(0), hdrLen(0), contentLen(0), tcpOpen(false), tcpClose(false)
+{
+
+}