148 lines
3.5 KiB
C++
148 lines
3.5 KiB
C++
/**
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* dumper.cpp
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* This file is part of the YATE Project http://YATE.null.ro
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*
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* Yet Another Signalling Stack - implements the support for SS7, ISDN and PSTN
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*
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* Yet Another Telephony Engine - a fully featured software PBX and IVR
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* Copyright (C) 2004-2006 Null Team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "yatesig.h"
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using namespace TelEngine;
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SignallingDumper::SignallingDumper(Type type)
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: m_type(type), m_output(0)
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{
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}
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SignallingDumper::~SignallingDumper()
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{
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terminate();
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}
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void SignallingDumper::setStream(Stream* stream)
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{
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if (stream == m_output)
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return;
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Stream* tmp = m_output;
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m_output = stream;
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head();
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delete tmp;
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}
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// Check if dumper is active
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bool SignallingDumper::active() const
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{
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return m_output && m_output->valid();
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}
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// Close the output stream
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void SignallingDumper::terminate()
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{
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setStream();
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}
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// Dump the actual data
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bool SignallingDumper::dump(void* buf, unsigned int len, bool sent, int link)
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{
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if (!(active() && buf && len))
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return false;
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if (m_type == Raw) {
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int wr = m_output->writeData(buf,len);
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return (wr == (int)len);
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}
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else if (m_type == Hexa) {
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String str;
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str.hexify(buf,len);
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str = "0 " + str + "\n";
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int wr = m_output->writeData(str);
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return (wr == (int)str.length());
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}
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Time t;
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struct timeval tv;
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u_int32_t hdr[4];
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t.toTimeval(&tv);
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hdr[0] = tv.tv_sec;
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hdr[1] = tv.tv_usec;
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hdr[2] = len;
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hdr[3] = len;
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DataBlock blk(hdr,sizeof(hdr));
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DataBlock dat(buf,len,false);
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blk += dat;
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dat.clear(false);
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int wr = m_output->writeData(blk);
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return (wr == (int)blk.length());
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}
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// Write whatever header the format needs
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void SignallingDumper::head()
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{
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if (!active())
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return;
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if (m_type == Raw || m_type == Hexa)
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return;
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u_int32_t hdr[6];
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hdr[0] = 0xa1b2c3d4; // libpcap magic
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// FIXME: handle big endian
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hdr[1] = 0x00040002; // version lo, hi
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hdr[2] = 0; // offset from GMT
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hdr[3] = 0; // timestamp accuracy
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hdr[4] = 65535; // rather arbitrary snaplen
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switch (m_type) {
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case Hdlc:
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hdr[5] = 0;
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break;
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case Mtp2:
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hdr[5] = 140;
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break;
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case Mtp3:
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hdr[5] = 141;
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break;
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case Sccp:
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hdr[5] = 142;
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break;
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default:
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// compiler, please shut up
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break;
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}
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m_output->writeData(hdr,sizeof(hdr));
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}
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// Create a dumper
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SignallingDumper* SignallingDumper::create(DebugEnabler* dbg, const char* filename, Type type,
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bool create, bool append)
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{
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if (!filename)
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return 0;
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SignallingDumper* dumper = 0;
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File* f = new File;
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if (f->openPath(filename,true,false,create,append,true)) {
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dumper = new SignallingDumper(type);
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dumper->setStream(f);
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}
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else {
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Debug(dbg,DebugWarn,"Failed to create dumper '%s'",filename);
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delete f;
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}
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return dumper;
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}
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/* vi: set ts=8 sw=4 sts=4 noet: */
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