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//
// VMime library (http://www.vmime.org)
// Copyright (C) 2002 Vincent Richard <vincent@vmime.org>
//
// 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, write to the Free Software Foundation, Inc.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
//
// Linking this library statically or dynamically with other modules is making
// a combined work based on this library. Thus, the terms and conditions of
// the GNU General Public License cover the whole combination.
//
#include "vmime/config.hpp"
#if VMIME_HAVE_MESSAGING_FEATURES && VMIME_HAVE_MESSAGING_PROTO_SMTP
#include "vmime/net/smtp/SMTPChunkingOutputStreamAdapter.hpp"
#include "vmime/net/smtp/SMTPConnection.hpp"
#include "vmime/net/smtp/SMTPTransport.hpp"
#include <algorithm>
namespace vmime {
namespace net {
namespace smtp {
SMTPChunkingOutputStreamAdapter::SMTPChunkingOutputStreamAdapter(
const shared_ptr <SMTPConnection>& conn,
const size_t size,
utility::progressListener* progress
)
: m_connection(conn),
m_bufferSize(0),
m_chunkCount(0),
m_totalSize(size),
m_totalSent(0),
m_progress(progress) {
if (progress) {
progress->start(size);
}
}
void SMTPChunkingOutputStreamAdapter::sendChunk(
const byte_t* const data,
const size_t count,
const bool last
) {
if (count == 0 && !last) {
// Nothing to send
return;
}
// Send this chunk
m_connection->sendRequest(SMTPCommand::BDAT(count, last));
m_connection->getSocket()->sendRaw(data, count);
++m_chunkCount;
if (m_progress) {
m_totalSent += count;
m_totalSize = std::max(m_totalSize, m_totalSent);
m_progress->progress(m_totalSent, m_totalSize);
}
if (m_connection->getTracer()) {
m_connection->getTracer()->traceSendBytes(count);
}
// If PIPELINING is not supported, read one response for this BDAT command
if (!m_connection->hasExtension("PIPELINING")) {
shared_ptr <SMTPResponse> resp = m_connection->readResponse();
if (resp->getCode() != 250) {
m_connection->getTransport()->disconnect();
throw exceptions::command_error("BDAT", resp->getText());
}
// If PIPELINING is supported, read one response for each chunk (ie. number
// of BDAT commands issued) after the last chunk has been sent
} else if (last) {
bool invalidReply = false;
shared_ptr <SMTPResponse> resp;
for (unsigned int i = 0 ; i < m_chunkCount ; ++i) {
resp = m_connection->readResponse();
if (resp->getCode() != 250) {
invalidReply = true;
}
}
if (invalidReply) {
m_connection->getTransport()->disconnect();
throw exceptions::command_error("BDAT", resp->getText());
}
}
}
void SMTPChunkingOutputStreamAdapter::writeImpl(
const byte_t* const data,
const size_t count
) {
const byte_t* curData = data;
size_t curCount = count;
while (curCount != 0) {
// Fill the buffer
const size_t remaining = sizeof(m_buffer) - m_bufferSize;
const size_t bytesToCopy = std::min(remaining, curCount);
std::copy(curData, curData + bytesToCopy, m_buffer + m_bufferSize);
m_bufferSize += bytesToCopy;
curData += bytesToCopy;
curCount -= bytesToCopy;
// If the buffer is full, send this chunk
if (m_bufferSize >= sizeof(m_buffer)) {
sendChunk(m_buffer, m_bufferSize, /* last */ false);
m_bufferSize = 0;
}
}
}
void SMTPChunkingOutputStreamAdapter::flush() {
sendChunk(m_buffer, m_bufferSize, /* last */ true);
m_bufferSize = 0;
if (m_progress) {
m_progress->stop(m_totalSize);
}
if (m_connection->getTracer()) {
m_connection->getTracer()->traceSendBytes(m_bufferSize);
}
}
size_t SMTPChunkingOutputStreamAdapter::getBlockSize() {
return sizeof(m_buffer);
}
} // smtp
} // net
} // vmime
#endif // VMIME_HAVE_MESSAGING_FEATURES && VMIME_HAVE_MESSAGING_PROTO_SMTP
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