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/**
* @file llpipeutil.cpp
* @date 2006-05-18
* @brief Utility pipe fittings for injecting and extracting strings
*
* $LicenseInfo:firstyear=2006&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2010, Linden Research, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
#include "linden_common.h"
#include "llpipeutil.h"
#include <stdlib.h>
#include <sstream>
#include "llbufferstream.h"
#include "lldefs.h"
#include "llframetimer.h"
#include "llpumpio.h"
#include "llrand.h"
#include "lltimer.h"
F32 pump_loop(LLPumpIO* pump, F32 seconds)
{
LLTimer timer;
timer.setTimerExpirySec(seconds);
while(!timer.hasExpired())
{
LLFrameTimer::updateFrameTime();
pump->pump();
pump->callback();
}
return timer.getElapsedTimeF32();
}
//virtual
LLIOPipe::EStatus LLPipeStringInjector::process_impl(
const LLChannelDescriptors& channels,
buffer_ptr_t& buffer,
bool& eos,
LLSD& context,
LLPumpIO* pump)
{
buffer->append(channels.out(), (U8*) mString.data(), mString.size());
eos = true;
return STATUS_DONE;
}
LLIOPipe::EStatus LLPipeStringExtractor::process_impl(
const LLChannelDescriptors& channels,
buffer_ptr_t& buffer,
bool& eos,
LLSD& context,
LLPumpIO* pump)
{
if(!eos) return STATUS_BREAK;
if(!pump || !buffer) return STATUS_PRECONDITION_NOT_MET;
LLBufferStream istr(channels, buffer.get());
std::ostringstream ostr;
while (istr.good())
{
char buf[1024]; /* Flawfinder: ignore */
istr.read(buf, sizeof(buf)); /* Flawfinder: ignore */
ostr.write(buf, istr.gcount());
}
mString = ostr.str();
mDone = true;
return STATUS_DONE;
}
// virtual
LLIOPipe::EStatus LLIOFuzz::process_impl(
const LLChannelDescriptors& channels,
buffer_ptr_t& buffer,
bool& eos,
LLSD& context,
LLPumpIO* pump)
{
while(mByteCount)
{
std::vector<U8> data;
data.reserve(10000);
int size = llmin(10000, mByteCount);
std::generate_n(
std::back_insert_iterator< std::vector<U8> >(data),
size,
rand);
buffer->append(channels.out(), &data[0], size);
mByteCount -= size;
}
return STATUS_OK;
}
struct random_ascii_generator
{
random_ascii_generator() {}
U8 operator()()
{
int rv = rand();
rv %= (127 - 32);
rv += 32;
return rv;
}
};
// virtual
LLIOPipe::EStatus LLIOASCIIFuzz::process_impl(
const LLChannelDescriptors& channels,
buffer_ptr_t& buffer,
bool& eos,
LLSD& context,
LLPumpIO* pump)
{
while(mByteCount)
{
std::vector<U8> data;
data.reserve(10000);
int size = llmin(10000, mByteCount);
std::generate_n(
std::back_insert_iterator< std::vector<U8> >(data),
size,
random_ascii_generator());
buffer->append(channels.out(), &data[0], size);
mByteCount -= size;
}
return STATUS_OK;
}
// virtual
LLIOPipe::EStatus LLIONull::process_impl(
const LLChannelDescriptors& channels,
buffer_ptr_t& buffer,
bool& eos,
LLSD& context,
LLPumpIO* pump)
{
return STATUS_OK;
}
// virtual
LLIOPipe::EStatus LLIOSleeper::process_impl(
const LLChannelDescriptors& channels,
buffer_ptr_t& buffer,
bool& eos,
LLSD& context,
LLPumpIO* pump)
{
if(!mRespond)
{
LL_DEBUGS() << "LLIOSleeper::process_impl() sleeping." << LL_ENDL;
mRespond = true;
static const F64 SLEEP_TIME = 2.0;
pump->sleepChain(SLEEP_TIME);
return STATUS_BREAK;
}
LL_DEBUGS() << "LLIOSleeper::process_impl() responding." << LL_ENDL;
LLBufferStream ostr(channels, buffer.get());
ostr << "huh? sorry, I was sleeping." << std::endl;
return STATUS_DONE;
}
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