On Mon, 2009-06-15 at 21:03 +0200, Johannes Berg wrote:
Christian has reported an error to me on dovecot 1.0.7, where the following code:
199 if (i_stream_read_data(mailstream, &beginning, &size, 5) < 0 || 200 size < 5) { .. 212 if (o_stream_send(outstream, beginning, 5) != 5) { .. 221 if (o_stream_send_istream(outstream, mailstream) < 0) { .. with a mailstream that start with "X-Spam-..." will result in a file stored that starts with "X-SpaX-Spam-...". I've read the above code many times now and tried to find a problem with it, but I don't see it -- could you help us?
The problem is that the istream API doesn't work the way you expect. Just reading doesn't advance the stream, only calling i_stream_skip() or i_stream_seek() does that (and o_stream_send_istream() internally). So just remove the o_stream_send(beginning) call and it'll work.