git-svn-id: svn://db.shs.com.ru/pip@634 12ceb7fc-bf1f-11e4-8940-5bc7170c53b5

2018-09-27 21:29:46 +00:00
parent ffe5b1d691
commit 2a48ee090a
11 changed files with 43 additions and 1112 deletions
--- a/src_io_utils/pistreampacker.cpp
+++ b/src_io_utils/pistreampacker.cpp
@@ -0,0 +1,94 @@
+/*
+	PIP - Platform Independent Primitives
+	Simple packet wrap aroud any PIIODevice
+	Copyright (C) 2018  Ivan Pelipenko peri4ko@yandex.ru, Andrey Bychkov work.a.b@yandex.ru
+
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "pistreampacker.h"
+#include "piiodevice.h"
+
+
+PIStreamPacker::PIStreamPacker(PIIODevice * dev): PIObject() {
+	packet_size = -1;
+	max_packet_size = 1000;
+	packet_sign = 0xAFBE;
+	assignDevice(dev);
+}
+
+
+void PIStreamPacker::send(const PIByteArray &data) {
+	if (data.isEmpty()) return;
+	PIByteArray cd = cryptData(data);
+	//piCout << "crypt" << data.size() << "->" << cd.size() << key().size();
+	PIByteArray hdr, part;
+	hdr << packet_sign << int(cd.size_s());
+	cd.insert(0, hdr);
+	int pcnt = (cd.size_s() - 1) / max_packet_size + 1, pst = 0;
+	for (int i = 0; i < pcnt; ++i) {
+		if (i == pcnt - 1) part = PIByteArray(cd.data(pst), cd.size_s() - pst);
+		else part = PIByteArray(cd.data(pst), max_packet_size);
+		//piCout << "send" << part.size();
+		sendRequest(part);
+		pst += max_packet_size;
+	}
+}
+
+
+void PIStreamPacker::received(const PIByteArray & data) {
+	stream.append(data);
+	//piCout << "rec" << data.size();
+	while (stream.size_s() >= 4) {
+		if (packet_size < 0) {
+			ushort sign(0);
+			memcpy(&sign, stream.data(), 2);
+			if (sign != packet_sign) {
+				stream.pop_front();
+				continue;
+			}
+			int sz = -1;
+			memcpy(&sz, stream.data(2), 4);
+			if (sz < 0) {
+				stream.pop_front();
+				continue;
+			}
+			stream.remove(0, 6);
+			packet.clear();
+			packet_size = sz;
+			if (packet_size == 0)
+				packet_size = -1;
+			continue;
+		} else {
+			int ps = piMini(stream.size_s(), packet_size - packet.size_s());
+			packet.append(stream.data(), ps);
+			stream.remove(0, ps);
+			if (packet.size_s() == packet_size) {
+				PIByteArray cd = decryptData(packet);
+				//piCout << "decrypt" << packet.size() << "->" << cd.size() << key().size();
+				if (!cd.isEmpty()) packetReceiveEvent(cd);
+				packet.clear();
+				packet_size = -1;
+			}
+		}
+	}
+}
+
+
+void PIStreamPacker::assignDevice(PIIODevice * dev) {
+	if (!dev) return;
+	CONNECTU(dev, threadedReadEvent, this, received);
+	CONNECTU(this, sendRequest, dev, write);
+}
+