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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you 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 .
*/
#include <sal/config.h>
#include <cassert>
#include <sal/types.h>
#include <rtl/strbuf.hxx>
#include <tools/inetmsg.hxx>
#include <tools/inetstrm.hxx>
int INetMIMEMessageStream::GetHeaderLine(char* pData, sal_uInt32 nSize)
{
char* pWBuf = pData;
sal_uInt32 i, n;
if (maMsgBuffer.Tell() == 0)
{
// Insert formatted header into buffer.
n = pSourceMsg->GetHeaderCount();
for (i = 0; i < n; i++)
{
INetMessageHeader aHeader (pSourceMsg->GetHeaderField(i));
if (aHeader.GetValue().getLength())
{
// NYI: Folding long lines.
maMsgBuffer.WriteOString( aHeader.GetName() );
maMsgBuffer.WriteCharPtr( ": " );
maMsgBuffer.WriteOString( aHeader.GetValue() );
maMsgBuffer.WriteCharPtr( "\r\n" );
}
}
pMsgWrite = const_cast<char *>(static_cast<char const *>(maMsgBuffer.GetData()));
pMsgRead = pMsgWrite + maMsgBuffer.Tell();
}
n = pMsgRead - pMsgWrite;
if (n > 0)
{
// Move to caller.
if (nSize < n) n = nSize;
for (i = 0; i < n; i++) *pWBuf++ = *pMsgWrite++;
}
else
{
// Reset buffer.
maMsgBuffer.Seek(STREAM_SEEK_TO_BEGIN);
}
return (pWBuf - pData);
}
int INetMIMEMessageStream::GetBodyLine(char* pData, sal_uInt32 nSize)
{
char* pWBuf = pData;
char* pWEnd = pData + nSize;
if (pSourceMsg->GetDocumentLB())
{
if (pMsgStrm == nullptr)
pMsgStrm.reset(new SvStream (pSourceMsg->GetDocumentLB()));
sal_uInt32 nRead = pMsgStrm->ReadBytes(pWBuf, (pWEnd - pWBuf));
pWBuf += nRead;
}
return (pWBuf - pData);
}
int INetMIMEMessageStream::GetMsgLine(char* pData, sal_uInt32 nSize)
{
// Check for header or body.
if (!bHeaderGenerated)
{
if (!done)
{
// Prepare special header fields.
if (pSourceMsg->GetParent())
{
OUString aPCT(pSourceMsg->GetParent()->GetContentType());
if (aPCT.startsWithIgnoreAsciiCase("message/rfc822"))
pSourceMsg->SetMIMEVersion("1.0");
else
pSourceMsg->SetMIMEVersion(OUString());
}
else
{
pSourceMsg->SetMIMEVersion("1.0");
}
// Check ContentType.
OUString aContentType(pSourceMsg->GetContentType());
if (!aContentType.isEmpty())
{
// Determine default Content-Type.
OUString aDefaultType = pSourceMsg->GetDefaultContentType();
if (aDefaultType.equalsIgnoreAsciiCase(aContentType))
{
// No need to specify default.
pSourceMsg->SetContentType(OUString());
}
}
// No need to specify default.
pSourceMsg->SetContentTransferEncoding(OUString());
// Mark we're done.
done = true;
}
// Generate the message header.
int nRead = GetHeaderLine(pData, nSize);
if (nRead <= 0)
{
// Reset state.
done = false;
}
return nRead;
}
else
{
// Generate the message body.
if (pSourceMsg->IsContainer())
{
// Encapsulated message body.
while (!done)
{
if (pChildStrm == nullptr)
{
INetMIMEMessage *pChild = pSourceMsg->GetChild(nChildIndex);
if (pChild)
{
// Increment child index.
nChildIndex++;
// Create child stream.
pChildStrm.reset(new INetMIMEMessageStream(pChild, false));
if (pSourceMsg->IsMultipart())
{
// Insert multipart delimiter.
OStringBuffer aDelim("--");
aDelim.append(pSourceMsg->GetMultipartBoundary());
aDelim.append("\r\n");
memcpy(pData, aDelim.getStr(),
aDelim.getLength());
return aDelim.getLength();
}
}
else
{
// No more parts. Mark we're done.
done = true;
nChildIndex = 0;
if (pSourceMsg->IsMultipart())
{
// Insert close delimiter.
OStringBuffer aDelim("--");
aDelim.append(pSourceMsg->GetMultipartBoundary());
aDelim.append("--\r\n");
memcpy(pData, aDelim.getStr(),
aDelim.getLength());
return aDelim.getLength();
}
}
}
else
{
// Read current child stream.
int nRead = pChildStrm->Read(pData, nSize);
if (nRead > 0)
{
return nRead;
}
else
{
// Cleanup exhausted child stream.
pChildStrm.reset();
}
}
}
return 0;
}
else
{
// Single part message body.
if (pSourceMsg->GetDocumentLB() == nullptr)
{
// Empty message body.
return 0;
}
// No Encoding.
return GetBodyLine(pData, nSize);
}
}
}
namespace
{
const int BUFFER_SIZE = 2048;
}
INetMIMEMessageStream::INetMIMEMessageStream(
INetMIMEMessage *pMsg, bool headerGenerated):
pSourceMsg(pMsg),
bHeaderGenerated(headerGenerated),
mvBuffer(BUFFER_SIZE),
pMsgRead(nullptr),
pMsgWrite(nullptr),
done(false),
nChildIndex(0)
{
assert(pMsg != nullptr);
maMsgBuffer.SetStreamCharSet(RTL_TEXTENCODING_ASCII_US);
pRead = pWrite = mvBuffer.data();
}
INetMIMEMessageStream::~INetMIMEMessageStream()
{
pChildStrm.reset();
}
int INetMIMEMessageStream::Read(char* pData, sal_uInt32 nSize)
{
char* pWBuf = pData;
char* pWEnd = pData + nSize;
while (pWBuf < pWEnd)
{
// Caller's buffer not yet filled.
sal_uInt32 n = pRead - pWrite;
if (n > 0)
{
// Bytes still in buffer.
sal_uInt32 m = pWEnd - pWBuf;
if (m < n) n = m;
for (sal_uInt32 i = 0; i < n; i++) *pWBuf++ = *pWrite++;
}
else
{
// Buffer empty. Reset to <Begin-of-Buffer>.
pRead = pWrite = mvBuffer.data();
// Read next message line.
int nRead = GetMsgLine(mvBuffer.data(), mvBuffer.size());
if (nRead > 0)
{
// Set read pointer.
pRead = mvBuffer.data() + nRead;
}
else
{
if (!bHeaderGenerated)
{
// Header generated. Insert empty line.
bHeaderGenerated = true;
*pRead++ = '\r';
*pRead++ = '\n';
}
else
{
// Body generated.
return (pWBuf - pData);
}
}
}
}
return (pWBuf - pData);
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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