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/*
* mime.cpp
*
* Copyright 2008 gpg4usb-team <[email protected]>
*
* This file is part of gpg4usb.
*
* Gpg4usb 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.
*
* Gpg4usb 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 gpg4usb. If not, see <http://www.gnu.org/licenses/>
*/
/***
* quotedPrintableDecode copied from KCodecs, where it is stated:
The quoted-printable codec as described in RFC 2045, section 6.7. is by
Rik Hemsley (C) 2001.
*/
/* TODO: proper import / copyright statement
*
*/
#include "mime.h"
Mime::Mime(QByteArray *message)
{
splitParts(message);
/*
mMessage = message;
int bStart = mMessage->indexOf("boundary=\"") + 10 ;
int bEnd = mMessage->indexOf("\"\n", bStart );
qDebug() << "bStart: " << bStart << " bEnd: " << bEnd;
mBoundary = new QByteArray(mMessage->mid(bStart, bEnd - bStart));
qDebug() << "boundary: " << *mBoundary;
Part *p1 = new Part();
int nb = mMessage->indexOf(*mBoundary, bEnd) + mBoundary->length() +1 ;
qDebug() << "nb: " << nb;
int eh = mMessage->indexOf("\n\n", nb);
qDebug() << "eh: " << eh;
QByteArray *header = new QByteArray(mMessage->mid(nb , eh - nb));
qDebug() << "header:" << header;
// split header at newlines
foreach(QByteArray tmp , header->split(* "\n")) {
// split lines at :
QList<QByteArray> tmp2 = tmp.split(* ":");
p1->header.insert(QString(tmp2[0].trimmed()), QString(tmp2[1].trimmed()));
}
QHashIterator<QString, QString> i(p1->header);
while (i.hasNext()) {
i.next();
qDebug() << "found: " << i.key() << ":" << i.value() << endl;
}
int nb2 = mMessage->indexOf(*mBoundary, eh);
p1->body = mMessage->mid(eh , nb2 - eh);
QTextCodec *codec = QTextCodec::codecForName("ISO-8859-15");
QString qs = codec->toUnicode(p1->body);
qDebug() << "body: " << qs;
*/
}
Mime::~Mime()
{
}
void Mime::splitParts(QByteArray *message)
{
int pos1, pos2, headEnd;
MimePart p_tmp;
// find the boundary
pos1 = message->indexOf("boundary=\"") + 10 ;
pos2 = message->indexOf("\"\n", pos1);
QByteArray boundary = message->mid(pos1, pos2 - pos1);
//qDebug() << "boundary: " << boundary;
while (pos2 > pos1) {
pos1 = message->indexOf(boundary, pos2) + boundary.length() + 1 ;
headEnd = message->indexOf("\n\n", pos1);
if (headEnd < 0)
break;
QByteArray header = message->mid(pos1 , headEnd - pos1);
p_tmp.header = parseHeader(&header);
pos2 = message->indexOf(boundary, headEnd);
p_tmp.body = message->mid(headEnd , pos2 - headEnd);
mPartList.append(p_tmp);
}
}
Header Mime::parseHeader(QByteArray *header)
{
QList<HeadElem> ret;
/** http://www.aspnetmime.com/help/welcome/overviewmimeii.html :
* If a line starts with any white space, that line is said to be 'folded' and is actually
* part of the header above it.
*/
header->replace("\n ", " ");
//split header at newlines
foreach(QByteArray line , header->split(* "\n")) {
HeadElem elem;
//split lines at :
QList<QByteArray> tmp2 = line.split(* ":");
elem.name = tmp2[0].trimmed();
if (tmp2[1].contains(';')) {
// split lines at ;
// TODO: what if ; is inside ""
QList<QByteArray> tmp3 = tmp2[1].split(* ";");
elem.value = QString(tmp3.takeFirst().trimmed());
foreach(QByteArray tmp4, tmp3) {
QList<QByteArray> tmp5 = tmp4.split(* "=");
elem.params.insert(QString(tmp5[0].trimmed()), QString(tmp5[1].trimmed()));
}
} else {
elem.value = tmp2[1].trimmed();
}
ret.append(elem);
}
return Header(ret);
}
Header Mime::getHeader(const QByteArray *message) {
int headEnd = message->indexOf("\n\n");
QByteArray header = message->mid(0, headEnd);
return parseHeader(&header);
}
bool Mime::isMultipart(QByteArray *message)
{
return message->startsWith("Content-Type: multipart/mixed;");
}
/**
* if Content-Type is specified, it should be mime
*
*/
bool Mime::isMime(const QByteArray *message)
{
return message->startsWith("Content-Type:");
}
/***
* quotedPrintableDecode copied from KCodecs, where it is stated:
The quoted-printable codec as described in RFC 2045, section 6.7. is by
Rik Hemsley (C) 2001.
*/
static const char hexChars[16] = {
'0', '1', '2', '3', '4', '5', '6', '7',
'8', '9', 'A', 'B', 'C', 'D', 'E', 'F'
};
/******************************** KCodecs ********************************/
// strchr(3) for broken systems.
static int rikFindChar(register const char * _s, const char c)
{
register const char * s = _s;
while (true) {
if ((0 == *s) || (c == *s)) break; ++s;
if ((0 == *s) || (c == *s)) break; ++s;
if ((0 == *s) || (c == *s)) break; ++s;
if ((0 == *s) || (c == *s)) break; ++s;
}
return s - _s;
}
void Mime::quotedPrintableDecode(const QByteArray& in, QByteArray& out)
{
// clear out the output buffer
out.resize(0);
if (in.isEmpty())
return;
char *cursor;
const char *data;
const unsigned int length = in.size();
data = in.data();
out.resize(length);
cursor = out.data();
for (unsigned int i = 0; i < length; i++) {
char c(in[i]);
if ('=' == c) {
if (i < length - 2) {
char c1 = in[i + 1];
char c2 = in[i + 2];
if (('\n' == c1) || ('\r' == c1 && '\n' == c2)) {
// Soft line break. No output.
if ('\r' == c1)
i += 2; // CRLF line breaks
else
i += 1;
} else {
// =XX encoded byte.
int hexChar0 = rikFindChar(hexChars, c1);
int hexChar1 = rikFindChar(hexChars, c2);
if (hexChar0 < 16 && hexChar1 < 16) {
*cursor++ = char((hexChar0 * 16) | hexChar1);
i += 2;
}
}
}
} else {
*cursor++ = c;
}
}
out.truncate(cursor - out.data());
}
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