/*!
\internal
Returns a DER key formatted as PEM.
*/
QByteArray QSslKeyPrivate::pemFromDer(const QByteArray &der, const QMap<QByteArray, QByteArray> &headers) const
{
QByteArray pem(der.toBase64());
const int lineWidth = 64; // RFC 1421
const int newLines = pem.size() / lineWidth;
const bool rem = pem.size() % lineWidth;
// ### optimize
for (int i = 0; i < newLines; ++i)
pem.insert((i + 1) * lineWidth + i, '\n');
if (rem)
pem.append('\n'); // ###
QByteArray extra;
if (!headers.isEmpty()) {
QMap<QByteArray, QByteArray>::const_iterator it = headers.constEnd();
do {
--it;
extra += it.key() + ": " + it.value() + '\n';
} while (it != headers.constBegin());
extra += '\n';
}
pem.prepend(pemHeader() + '\n' + extra);
pem.append(pemFooter() + '\n');
return pem;
}
/*!
\internal
Returns a PEM key formatted as DER.
*/
QByteArray QSslKeyPrivate::derFromPem(const QByteArray &pem, QMap<QByteArray, QByteArray> *headers) const
{
const QByteArray header = pemHeader();
const QByteArray footer = pemFooter();
QByteArray der(pem);
const int headerIndex = der.indexOf(header);
const int footerIndex = der.indexOf(footer);
if (headerIndex == -1 || footerIndex == -1)
return QByteArray();
der = der.mid(headerIndex + header.size(), footerIndex - (headerIndex + header.size()));
if (der.contains("Proc-Type:")) {
// taken from QHttpNetworkReplyPrivate::parseHeader
const QByteArrayMatcher lf("\n");
const QByteArrayMatcher colon(":");
int i = 0;
while (i < der.count()) {
int j = colon.indexIn(der, i); // field-name
if (j == -1)
break;
const QByteArray field = der.mid(i, j - i).trimmed();
j++;
// any number of LWS is allowed before and after the value
QByteArray value;
do {
i = lf.indexIn(der, j);
if (i == -1)
break;
if (!value.isEmpty())
value += ' ';
// check if we have CRLF or only LF
bool hasCR = (i && der[i-1] == '\r');
int length = i -(hasCR ? 1: 0) - j;
value += der.mid(j, length).trimmed();
j = ++i;
} while (i < der.count() && (der.at(i) == ' ' || der.at(i) == '\t'));
if (i == -1)
break; // something is wrong
headers->insert(field, value);
}
der = der.mid(i);
}
return QByteArray::fromBase64(der); // ignores newlines
}
/*!
\internal
Returns a PEM key formatted as DER.
*/
QByteArray QSslKeyPrivate::derFromPem(const QByteArray &pem) const
{
const QByteArray header = pemHeader();
const QByteArray footer = pemFooter();
QByteArray der(pem);
const int headerIndex = der.indexOf(header);
const int footerIndex = der.indexOf(footer);
if (headerIndex == -1 || footerIndex == -1)
return QByteArray();
der = der.mid(headerIndex + header.size(), footerIndex - (headerIndex + header.size()));
return QByteArray::fromBase64(der); // ignores newlines
}
/*!
\internal
Returns a DER key formatted as PEM.
*/
QByteArray QSslKeyPrivate::pemFromDer(const QByteArray &der) const
{
QByteArray pem(der.toBase64());
const int lineWidth = 64; // RFC 1421
const int newLines = pem.size() / lineWidth;
const bool rem = pem.size() % lineWidth;
// ### optimize
for (int i = 0; i < newLines; ++i)
pem.insert((i + 1) * lineWidth + i, '\n');
if (rem)
pem.append('\n'); // ###
pem.prepend(pemHeader());
pem.append(pemFooter());
return pem;
}
