Hi Timo....
Let's try to work with my plugin !
I Try to do this in "save_begin"
static int emexis_mail_save_encrypted_begin(struct mail_save_context *ctx, struct istream *input) { struct mailbox *box = ctx->transaction->box; struct emexis_user *zuser = EMEXIS_USER_CONTEXT(box->storage->user); union mailbox_module_context *zbox = EMEXIS_CONTEXT(box); struct ostream *output; struct istream *new_input;
/* This is when a try to change the INPUT stream to include my headerline */ new_input =* i_stream_create_emx*(input); if (zbox->super.save_begin(ctx, new_input) < 0) return -1; i_stream_unref(&new_input); /* END INPUT modification */
/* This part is to handle the saved email like zlib do, and works ! */
zuser->writer = emexis_uis_init(zuser->mountPoint, zuser->save_mail,zuser->kSize, zuser->kValue, zuser->userAuth); output = o_stream_create_emexis(ctx->output, &zuser->writer, input); o_stream_unref(&ctx->output); ctx->output = output; o_stream_cork(ctx->output); /* END handle saved email */
return 0;}
The i_stream_create_emx is basically the istream-zlib.c modifed, (i use it to read my splited email from file, and works fine).
Theoretically, the emexis_mail_save_encrypted_begin is right, calling my i_stream_create_emx correctly.
I got some error in read function:
Panic: file istream-add_header.c: line 125 (i_stream_emx_read): assertion failed: (ret > 0) Jul 21 14:50:49 brc dovecot: imap(alex@exemplo.com.br): Error: Raw backtrace: /opt/addons/lib/dovecot/libdovecot.so.0 [0xb76d4a8e] -> /opt/addons/lib/dovecot/libdovecot.so.0 [0xb76d4ae5] -> /opt/addons/lib/dovecot/libdovecot.so.0 [0xb76d4146] -> /opt/addons/lib/dovecot/lib20_emexis_uis_plugin.so [0xb73ade62] -> /opt/addons/lib/dovecot/libdovecot.so.0(i_stream_read+0x7a) [0xb76db0da] -> /opt/addons/lib/dovecot/libdovecot.so.0 [0xb76dcab6] -> /opt/addons/lib/dovecot/libdovecot.so.0 [0xb76dcb8c] -> /opt/addons/lib/dovecot/libdovecot.so.0(i_stream_read+0x7a) [0xb76db0da] -> /opt/addons/lib/dovecot/libdovecot.so.0 [0xb76df5fc] -> /opt/addons/lib/dovecot/libdovecot.so.0(i_stream_read+0x7a) [0xb76db0da] -> /opt/addons/lib/dovecot/libdovecot.so.0(i_stream_read_data+0x2b) [0xb76db35b] -> /opt/addons/lib/dovecot/libdovecot.so.0(io_stream_copy+0x5d) [0xb76e7f1d] -> /opt/addons/lib/dovecot/libdovecot.so.0 [0xb76e7fc0] -> /opt/addons/lib/dovecot/libdovecot.so.0(o_stream_send_istream+0x4b) [0xb76e820b] -> /opt/addons/lib
my read is like this:
do {
ret = read(emx_stream->fd ,stream->w_buffer + stream->pos, size);
fprintf(emx_stream->debug,"RET FROM READ = %d -- ERRNO = %d -- STR =|%s|\n", ret, errno, strerror(errno)); } while (ret < 0 && errno == EINTR && stream->istream.blocking);
if (ret == 0 ) {
/* EOF */
stream->istream.eof = TRUE;
fprintf(emx_stream->debug,"EOF EOF EOF TRUE\n");
return -1;
}
if (ret < 0) {
if (errno == EAGAIN) {
i_assert(!stream->istream.blocking);
ret = 0;
}
}
fprintf(emx_stream->debug,"READ RET = %d -- ERRNO = %d -- STR = |%s|\n",ret, errno, strerror(errno)); fprintf(emx_stream->debug,"stream->pos = %d -- emx_stream->seek_offset = %d\n", stream->pos, emx_stream->seek_offset);
emx_stream->seek_offset += ret;
stream->pos += ret;
i_assert(ret > 0); // The error is here.
fprintf(emx_stream->debug,"READ RET DECRYPT = %d -- stream->pos = %d --emx_stream->seek_offset = %d\n", ret, stream->pos, emx_stream->seek_offset); fprintf(emx_stream->debug,"********************** FINISH READ *********************\n"); fflush(emx_stream->debug);
return ret;There is some wrong in read like this ?
The better to do is copy the istream.c and change the funcions name to do the same thing, and add my header line ?
2010/6/26 Alex Baule <alexwbaule@gmail.com>
I will try to do like you said, and i will return later to said the result !
Tks.
2010/6/25 Timo Sirainen <tss@iki.fi>
On Mon, 2010-06-21 at 16:43 -0300, Alex Baule wrote:
if (imail->data.stream != NULL || (_mail->uid == 0 && zuser->save_handler == NULL)) { return zmail->super.get_stream(_mail, hdr_size, body_size, stream_r);}
I think this is the line that return the stream that is the stream sent
by
client.
I try to change this line and put inside this IF , a call to my function to handle with the input email from client. But i got some errors about the input part.
I'm not really sure what you mean by this. What input are you sending where? Show some example non-working code?
In other email, Timo said, to get the S and W flags in the email name, i need to intercept the email input from client to dovecot, in this part is done the W and S calculation.
Timo, where is the part that i can get the input from client ?
IIRC you wanted to add some extra headers to the mail (and you wanted it to be visible to clients, right? if not, you could do it similarly than how mbox hides some headers). All mails are saved via:
int mailbox_save_begin(struct mail_save_context **ctx, struct istream *input);
And the input comes from there. You need to replace that input with your own input stream that contains the wanted headers and other changes (probably something built with istream-concat and istream-header-filter). You can replace the input by overriding mailbox.save_begin() method, for example see acl plugin how it uses acl_save_begin(). Maybe something like:
static int your_save_begin(struct mail_save_context *ctx, struct istream *input) { struct mailbox *box = ctx->transaction->box; struct your_mailbox *abox = YOUR_CONTEXT(box); struct istream *new_input; int ret;
new_input = build_changed_input(input); ret = abox->module_ctx.super.save_begin(ctx, new_input); i_stream_unref(&new_input); return ret;}