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/*
UserinfoEx plugin for Miranda IM
Copyright:
© 2006-2010 DeathAxe, Yasnovidyashii, Merlin, K. Romanov, Kreol
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 2
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
//Not including CRLFs
//NOTE: For BASE64 and UUENCODE, this actually
//represents the amount of unencoded characters
//per line
#define TSSMTPMAX_QP_LINE_LENGTH 76
#define TSSMTPMAX_BASE64_LINE_LENGTH 57
#define TSSMTPMAX_UUENCODE_LINE_LENGTH 45
//=======================================================================
// Quoted Printable encode/decode
// compliant with RFC 2045
//=======================================================================
//
#define TSSMTPQPENCODE_DOT 1
#define TSSMTPQPENCODE_TRAILING_SOFT 2
inline INT_PTR QPEncodeGetRequiredLength(INT_PTR nSrcLen)
{
INT_PTR nRet = 3*((3*nSrcLen)/(TSSMTPMAX_QP_LINE_LENGTH-8));
nRet += 3*nSrcLen;
nRet += 3;
return nRet;
}
inline INT_PTR QPDecodeGetRequiredLength(INT_PTR nSrcLen)
{
return nSrcLen;
}
inline BOOL QPEncode(BYTE* pbSrcData, INT_PTR nSrcLen, LPSTR szDest, INT_PTR* pnDestLen, BYTE *bEncoded, DWORD dwFlags = 0)
{
//The hexadecimal character set
static const CHAR s_chHexChars[16] = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
'A', 'B', 'C', 'D', 'E', 'F'};
INT_PTR nRead = 0, nWritten = 0, nLineLen = 0;
CHAR ch;
BYTE bChanged = FALSE;
if (!pbSrcData || !szDest || !pnDestLen) {
return FALSE;
}
while (nRead < nSrcLen) {
ch = *pbSrcData++;
nRead++;
if (nLineLen == 0 && ch == '.' && (dwFlags & TSSMTPQPENCODE_DOT)) {
*szDest++ = '.';
nWritten++;
nLineLen++;
bChanged = TRUE;
}
if ((ch > 32 && ch < 61) || (ch > 61 && ch < 127)) {
*szDest++ = ch;
nWritten++;
nLineLen++;
}
else
if ((ch == ' ' || ch == '\t') && (nLineLen < (TSSMTPMAX_QP_LINE_LENGTH - 12))) {
*szDest++ = ch;
nWritten++;
nLineLen++;
}
else {
*szDest++ = '=';
*szDest++ = s_chHexChars[(ch >> 4) & 0x0F];
*szDest++ = s_chHexChars[ch & 0x0F];
nWritten += 3;
nLineLen += 3;
bChanged = TRUE;
}
if (nLineLen >= (TSSMTPMAX_QP_LINE_LENGTH - 11)) {
*szDest++ = '=';
*szDest++ = '\r';
*szDest++ = '\n';
nLineLen = 0;
nWritten += 3;
bChanged = TRUE;
}
}
if (dwFlags & TSSMTPQPENCODE_TRAILING_SOFT) {
*szDest++ = '=';
*szDest++ = '\r';
*szDest++ = '\n';
nWritten += 3;
bChanged = TRUE;
}
*pnDestLen = nWritten;
if (bEncoded) *bEncoded = bChanged;
return TRUE;
}
inline BOOL QPDecode(BYTE* pbSrcData, INT_PTR nSrcLen, LPSTR szDest, INT_PTR* pnDestLen, DWORD dwFlags = 0)
{
if (!pbSrcData || !szDest || !pnDestLen)
{
return FALSE;
}
INT_PTR nRead = 0, nWritten = 0, nLineLen = -1;
char ch;
while (nRead <= nSrcLen)
{
ch = *pbSrcData++;
nRead++;
nLineLen++;
if (ch == '=')
{
//if the next character is a digit or a character, convert
if (nRead < nSrcLen && (isdigit(*pbSrcData) || isalpha(*pbSrcData)))
{
char szBuf[5];
szBuf[0] = *pbSrcData++;
szBuf[1] = *pbSrcData++;
szBuf[2] = '\0';
char* tmp = '\0';
*szDest++ = (BYTE)strtoul(szBuf, &tmp, 16);
nWritten++;
nRead += 2;
continue;
}
//if the next character is a carriage return or line break, eat it
if (nRead < nSrcLen && *pbSrcData == '\r' && (nRead+1 < nSrcLen) && *(pbSrcData+1)=='\n')
{
pbSrcData++;
nRead++;
nLineLen = -1;
continue;
}
return FALSE;
}
if (ch == '\r' || ch == '\n')
{
nLineLen = -1;
continue;
}
if ((dwFlags & TSSMTPQPENCODE_DOT) && ch == '.' && nLineLen == 0)
{
continue;
}
*szDest++ = ch;
nWritten++;
}
*pnDestLen = nWritten-1;
return TRUE;
}
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