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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* 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/. */
#include "ImportOutFile.h"
#include "nsImportTranslator.h"
#include "ImportCharSet.h"
bool nsImportTranslator::ConvertToFile(const uint8_t * pIn, uint32_t inLen, ImportOutFile *pOutFile, uint32_t *pProcessed)
{
if (pProcessed)
*pProcessed = inLen;
return (pOutFile->WriteData(pIn, inLen));
}
void CMHTranslator::ConvertBuffer(const uint8_t * pIn, uint32_t inLen, uint8_t * pOut)
{
while (inLen) {
if (!ImportCharSet::IsUSAscii(*pIn) || ImportCharSet::Is822SpecialChar(*pIn) || ImportCharSet::Is822CtlChar(*pIn) ||
(*pIn == ImportCharSet::cSpaceChar) || (*pIn == '*') || (*pIn == '\'') ||
(*pIn == '%')) {
// needs to be encode as %hex val
*pOut = '%'; pOut++;
ImportCharSet::ByteToHex(*pIn, pOut);
pOut += 2;
}
else {
*pOut = *pIn;
pOut++;
}
pIn++; inLen--;
}
*pOut = 0;
}
bool CMHTranslator::ConvertToFile(const uint8_t * pIn, uint32_t inLen, ImportOutFile *pOutFile, uint32_t *pProcessed)
{
uint8_t hex[2];
while (inLen) {
if (!ImportCharSet::IsUSAscii(*pIn) || ImportCharSet::Is822SpecialChar(*pIn) || ImportCharSet::Is822CtlChar(*pIn) ||
(*pIn == ImportCharSet::cSpaceChar) || (*pIn == '*') || (*pIn == '\'') ||
(*pIn == '%')) {
// needs to be encode as %hex val
if (!pOutFile->WriteByte('%'))
return false;
ImportCharSet::ByteToHex(*pIn, hex);
if (!pOutFile->WriteData(hex, 2))
return false;
}
else {
if (!pOutFile->WriteByte(*pIn))
return false;
}
pIn++; inLen--;
}
if (pProcessed)
*pProcessed = inLen;
return true;
}
bool C2047Translator::ConvertToFileQ(const uint8_t * pIn, uint32_t inLen, ImportOutFile *pOutFile, uint32_t *pProcessed)
{
if (!inLen)
return true;
int maxLineLen = 64;
int curLineLen = m_startLen;
bool startLine = true;
uint8_t hex[2];
while (inLen) {
if (startLine) {
if (!pOutFile->WriteStr(" =?"))
return false;
if (!pOutFile->WriteStr(m_charset.get()))
return false;
if (!pOutFile->WriteStr("?q?"))
return false;
curLineLen += (6 + m_charset.Length());
startLine = false;
}
if (!ImportCharSet::IsUSAscii(*pIn) || ImportCharSet::Is822SpecialChar(*pIn) || ImportCharSet::Is822CtlChar(*pIn) ||
(*pIn == ImportCharSet::cSpaceChar) || (*pIn == '?') || (*pIn == '=')) {
// needs to be encode as =hex val
if (!pOutFile->WriteByte('='))
return false;
ImportCharSet::ByteToHex(*pIn, hex);
if (!pOutFile->WriteData(hex, 2))
return false;
curLineLen += 3;
}
else {
if (!pOutFile->WriteByte(*pIn))
return false;
curLineLen++;
}
pIn++; inLen--;
if (curLineLen > maxLineLen) {
if (!pOutFile->WriteStr("?="))
return false;
if (inLen) {
if (!pOutFile->WriteStr("\x0D\x0A "))
return false;
}
startLine = true;
curLineLen = 0;
}
}
if (!startLine) {
// end the encoding!
if (!pOutFile->WriteStr("?="))
return false;
}
if (pProcessed)
*pProcessed = inLen;
return true;
}
bool C2047Translator::ConvertToFile(const uint8_t * pIn, uint32_t inLen, ImportOutFile *pOutFile, uint32_t *pProcessed)
{
if (m_useQuotedPrintable)
return ConvertToFileQ(pIn, inLen, pOutFile, pProcessed);
if (!inLen)
return true;
int maxLineLen = 64;
int curLineLen = m_startLen;
bool startLine = true;
int encodeMax;
uint8_t * pEncoded = new uint8_t[maxLineLen * 2];
while (inLen) {
if (startLine) {
if (!pOutFile->WriteStr(" =?")) {
delete [] pEncoded;
return false;
}
if (!pOutFile->WriteStr(m_charset.get())) {
delete [] pEncoded;
return false;
}
if (!pOutFile->WriteStr("?b?")) {
delete [] pEncoded;
return false;
}
curLineLen += (6 + m_charset.Length());
startLine = false;
}
encodeMax = maxLineLen - curLineLen;
encodeMax *= 3;
encodeMax /= 4;
if ((uint32_t)encodeMax > inLen)
encodeMax = (int)inLen;
// encode the line, end the line
// then continue. Update curLineLen, pIn, startLine, and inLen
UMimeEncode::ConvertBuffer(pIn, encodeMax, pEncoded, maxLineLen, maxLineLen, "\x0D\x0A");
if (!pOutFile->WriteStr((const char *)pEncoded)) {
delete [] pEncoded;
return false;
}
pIn += encodeMax;
inLen -= encodeMax;
startLine = true;
curLineLen = 0;
if (!pOutFile->WriteStr("?=")) {
delete [] pEncoded;
return false;
}
if (inLen) {
if (!pOutFile->WriteStr("\x0D\x0A ")) {
delete [] pEncoded;
return false;
}
}
}
delete [] pEncoded;
if (pProcessed)
*pProcessed = inLen;
return true;
}
uint32_t UMimeEncode::GetBufferSize(uint32_t inBytes)
{
// it takes 4 base64 bytes to represent 3 regular bytes
inBytes += 3;
inBytes /= 3;
inBytes *= 4;
// This should be plenty, but just to be safe
inBytes += 4;
// now allow for end of line characters
inBytes += ((inBytes + 39) / 40) * 4;
return inBytes;
}
static uint8_t gBase64[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
uint32_t UMimeEncode::ConvertBuffer(const uint8_t * pIn, uint32_t inLen, uint8_t * pOut, uint32_t maxLen, uint32_t firstLineLen, const char * pEolStr)
{
uint32_t pos = 0;
uint32_t len = 0;
uint32_t lineLen = 0;
uint32_t maxLine = firstLineLen;
int eolLen = 0;
if (pEolStr)
eolLen = strlen(pEolStr);
while ((pos + 2) < inLen) {
// Encode 3 bytes
*pOut = gBase64[*pIn >> 2];
pOut++; len++; lineLen++;
*pOut = gBase64[(((*pIn) & 0x3)<< 4) | (((*(pIn + 1)) & 0xF0) >> 4)];
pIn++; pOut++; len++; lineLen++;
*pOut = gBase64[(((*pIn) & 0xF) << 2) | (((*(pIn + 1)) & 0xC0) >>6)];
pIn++; pOut++; len++; lineLen++;
*pOut = gBase64[(*pIn) & 0x3F];
pIn++; pOut++; len++; lineLen++;
pos += 3;
if (lineLen >= maxLine) {
lineLen = 0;
maxLine = maxLen;
if (pEolStr) {
memcpy(pOut, pEolStr, eolLen);
pOut += eolLen;
len += eolLen;
}
}
}
if ((pos < inLen) && ((lineLen + 3) > maxLine)) {
lineLen = 0;
maxLine = maxLen;
if (pEolStr) {
memcpy(pOut, pEolStr, eolLen);
pOut += eolLen;
len += eolLen;
}
}
if (pos < inLen) {
// Get the last few bytes!
*pOut = gBase64[*pIn >> 2];
pOut++; len++;
pos++;
if (pos < inLen) {
*pOut = gBase64[(((*pIn) & 0x3)<< 4) | (((*(pIn + 1)) & 0xF0) >> 4)];
pIn++; pOut++; pos++; len++;
if (pos < inLen) {
// Should be dead code!! (Then why is it here doofus?)
*pOut = gBase64[(((*pIn) & 0xF) << 2) | (((*(pIn + 1)) & 0xC0) >>6)];
pIn++; pOut++; len++;
*pOut = gBase64[(*pIn) & 0x3F];
pos++; pOut++; len++;
}
else {
*pOut = gBase64[(((*pIn) & 0xF) << 2)];
pOut++; len++;
*pOut = '=';
pOut++; len++;
}
}
else {
*pOut = gBase64[(((*pIn) & 0x3)<< 4)];
pOut++; len++;
*pOut = '=';
pOut++; len++;
*pOut = '=';
pOut++; len++;
}
}
*pOut = 0;
return len;
}
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