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RRTcodebaseC

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if (dc_imap_is_error(imap, r) || fetch_result==NULL)
{
fetch_result = NULL;
if (r==MAILIMAP_ERROR_PROTOCOL) {
dc_log_info(imap->context, 0, "Folder \"%s\" is empty", folder);
goto cleanup; /* the folder is simply empty, this is no error */
}
dc_log_warning(imap->context, 0, "Cannot fetch message list from folder \"%s\".", folder);
goto cleanup;
}
/* go through all mails in folder (this is typically _fast_ as we already have the whole list) */
for (cur = clist_begin(fetch_result); cur!=NULL ; cur = clist_next(cur))
{
struct mailimap_msg_att* msg_att = (struct mailimap_msg_att*)clist_content(cur); /* mailimap_msg_att is a list of attributes: list is a list of message attributes */
uint32_t cur_uid = peek_uid(msg_att);
if (cur_uid > lastseenuid /* `UID FETCH <lastseenuid+1>:*` may include lastseenuid if "*"==lastseenuid - and also smaller uids may be returned! */)
{
char* rfc724_mid = unquote_rfc724_mid(peek_rfc724_mid(msg_att));
read_cnt++;
if (!imap->precheck_imf(imap, rfc724_mid, folder, cur_uid)) {
if (fetch_single_msg(imap, folder, cur_uid)==0/* 0=try again later*/) {
dc_log_info(imap->context, 0, "Read error for message %s from \"%s\", trying over later.", rfc724_mid, folder);
read_errors++; // with read_errors, lastseenuid is not written
}
}
else {
dc_log_info(imap->context, 0, "Skipping message %s from \"%s\" by precheck.", rfc724_mid, folder);
}
if (cur_uid > new_lastseenuid) {
new_lastseenuid = cur_uid;
}
free(rfc724_mid);
}
}
if (!read_errors && new_lastseenuid > 0) {
// TODO: it might be better to increase the lastseenuid also on partial errors.
// however, this requires to sort the list before going through it above.
set_config_lastseenuid(imap, folder, uidvalidity, new_lastseenuid);
}
/* done */
cleanup:
if (read_errors) {
dc_log_warning(imap->context, 0, "%i mails read from \"%s\" with %i errors.", (int)read_cnt, folder, (int)read_errors);
}
else {
dc_log_info(imap->context, 0, "%i mails read from \"%s\".", (int)read_cnt, folder);
}
FREE_FETCH_LIST(fetch_result);
return read_cnt;
}
/*******************************************************************************
* Watch thread
******************************************************************************/
int dc_imap_fetch(dc_imap_t* imap)
{
int success = 0;
if (imap==NULL || !imap->connected) {
goto cleanup;
}
setup_handle_if_needed(imap);
// as during the fetch commands, new messages may arrive, we fetch until we do not
// get any more. if IDLE is called directly after, there is only a small chance that
// messages are missed and delayed until the next IDLE call
while (fetch_from_single_folder(imap, imap->watch_folder) > 0) {
;
}
success = 1;
cleanup:
return success;
}
static void fake_idle(dc_imap_t* imap)
{
/* Idle using timeouts. This is also needed if we're not yet configured -
in this case, we're waiting for a configure job */
time_t fake_idle_start_time = time(NULL);
time_t seconds_to_wait = 0;
dc_log_info(imap->context, 0, "IMAP-fake-IDLEing...");
int do_fake_idle = 1;