[Dovecot] Implementation of editheaders in dovecot
Konstantin Lepa
konstantin.lepa at gmail.com
Mon Apr 6 15:18:42 EEST 2009
It's my code of message creation:
chunks = t_new(struct istream *, max_chunks);
chunks[cnt++] = header_filter(stream, &ra_mail->exclude_headers,
exclude_cnt); /* calls i_stream_header_filter */
#if 0
if (include_cnt) { /* calls i_stream_create_from_data for my
headers */
chunks[cnt++] = create_header_stream(&ra_mail->include_headers,
include_cnt);
}
chunks[cnt++] = create_stream_for_msgbody(stream); /* calls
i_stream_create_limit for message body */
#endif
chunks[cnt++] = NULL;
*stream_r = i_stream_create_concat(chunks);
if I enable the block of code, then header_filter_callback is called
for message body only. Why?
I reviewed `i_stream_header_filter' and noticed, that it returns
`i_stream_create(&mstream->istream, input, -1)' where `input' is
parent stream. Maybe, is it reason of problem?
/************************************My
header_filter_callback:************************************/
static void rarules_header_filter_callback(struct message_header_line
* hdr,
bool * matched, void *
context)
{
DPRINTF("Func `%s' is called", __FUNCTION__);
if (hdr && hdr->eoh == TRUE) { *matched = FALSE; }
else { *matched =
TRUE; }
if (hdr) { DPRINTF("#%s: %s", hdr->name, hdr->value); }
}
/***************************************** My header_filter:
****************************************/
static struct istream *
header_filter(struct istream * stream, ARRAY_TYPE(const_string) *
headers_arr,
unsigned int count)
{
const char * const * headers = NULL;
DPRINTF("Func `%s' is called", __FUNCTION__);
if (count) { headers = (const char **)array_idx(headers_arr,
0); }
return i_stream_create_header_filter(stream,
HEADER_FILTER_EXCLUDE |
HEADER_FILTER_NO_CR |
HEADER_FILTER_HIDE_BODY,
headers,
N_ELEMENTS(headers),
rarules_header_filter_callback,
NULL);
}
On Apr 3, 2009, at 21:29 , Timo Sirainen wrote:
> On Fri, 2009-04-03 at 21:25 +0400, Konstantin Lepa wrote:
>> Yeah, but it doesn't work without i_stream_seek(stream, 0) before.
>>
>> How can I remove EOH after i_stream_create_header_filter (second
>> '\n')? Is it possible?
>
> You can give i_stream_create_header_filter() a callback function,
> which
> gets called for each header line, and once for the EOH with hdr->eoh
> ==
> TRUE. There you can set *matched = FALSE and it won't add the EOH.
>
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