/* Used as the output function of a SEC_PKCS7EncoderContext -- we feed
plaintext into the crypto engine, and it calls this function with encrypted
data; then this function writes a base64-encoded representation of that
data to the file (by filtering it through the given MimeEncoderData object.)
Also used as the output function of SEC_PKCS7Encode() -- but in that case,
it's used to write the encoded representation of the signature. The only
difference is which MimeEncoderData object is used.
*/
static void
mime_crypto_write_base64 (void *closure, const char *buf, unsigned long size)
{
MimeEncoderData *data = (MimeEncoderData *) closure;
nsresult rv = MIME_EncoderWrite (data, buf, size);
PR_SetError(NS_FAILED(rv) ? rv : 0, 0);
}
int nsMsgSendPart::PushBody(const char* buffer, PRInt32 length)
{
int status = 0;
const char* encoded_data = buffer;
if (m_encoder_data)
{
status = MIME_EncoderWrite(m_encoder_data, encoded_data, length);
}
else
{
// Merely translate all linebreaks to CRLF.
const char *in = encoded_data;
const char *end = in + length;
char *buffer, *out;
buffer = mime_get_stream_write_buffer();
if (!buffer) return NS_ERROR_OUT_OF_MEMORY;
NS_ASSERTION(encoded_data != buffer, "encoded_data == buffer");
out = buffer;
for (; in < end; in++) {
if (m_just_hit_CR) {
m_just_hit_CR = false;
if (*in == '\n') {
// The last thing we wrote was a CRLF from hitting a CR.
// So, we don't want to do anything from a following LF;
// we want to ignore it.
continue;
}
}
if (*in == '\r' || *in == '\n') {
/* Write out the newline. */
*out++ = '\r';
*out++ = '\n';
status = mime_write_message_body(m_state, buffer,
out - buffer);
if (status < 0) return status;
out = buffer;
if (*in == '\r') {
m_just_hit_CR = true;
}
out = buffer;
} else {
/* Fix for bug #95985. We can't assume that all lines are shorter
than 4096 chars (MIME_BUFFER_SIZE), so we need to test
for this here. sfraser.
*/
if (out - buffer >= MIME_BUFFER_SIZE)
{
status = mime_write_message_body(m_state, buffer, out - buffer);
if (status < 0) return status;
out = buffer;
}
*out++ = *in;
}
}
/* Flush the last line. */
if (out > buffer) {
status = mime_write_message_body(m_state, buffer, out - buffer);
if (status < 0) return status;
out = buffer;
}
}
if (encoded_data && encoded_data != buffer) {
PR_Free((char *) encoded_data);
}
return status;
}
