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RRTcodebaseC

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{
*uidvalidity = 0;
*lastseenuid = 0;
char* key = dc_mprintf("imap.mailbox.%s", folder);
char* val1 = imap->get_config(imap, key, NULL), *val2 = NULL, *val3 = NULL;
if (val1)
{
/* the entry has the format `imap.mailbox.<folder>=<uidvalidity>:<lastseenuid>` */
val2 = strchr(val1, ':');
if (val2)
{
*val2 = 0;
val2++;
val3 = strchr(val2, ':');
if (val3) { *val3 = 0; /* ignore everything bethind an optional second colon to allow future enhancements */ }
*uidvalidity = atol(val1);
*lastseenuid = atol(val2);
}
}
free(val1); /* val2 and val3 are only pointers inside val1 and MUST NOT be free()'d */
free(key);
}
static void set_config_lastseenuid(dc_imap_t* imap, const char* folder, uint32_t uidvalidity, uint32_t lastseenuid)
{
char* key = dc_mprintf("imap.mailbox.%s", folder);
char* val = dc_mprintf("%lu:%lu", uidvalidity, lastseenuid);
imap->set_config(imap, key, val);
free(val);
free(key);
}
/*******************************************************************************
* Handle folders
******************************************************************************/
static int select_folder(dc_imap_t* imap, const char* folder /*may be NULL*/)
{
if (imap==NULL) {
return 0;
}
if (imap->etpan==NULL) {
imap->selected_folder[0] = 0;
imap->selected_folder_needs_expunge = 0;
return 0;
}
/* if there is a new folder and the new folder is equal to the selected one, there's nothing to do.
if there is _no_ new folder, we continue as we might want to expunge below. */
if (folder && folder[0] && strcmp(imap->selected_folder, folder)==0) {
return 1;
}
/* deselect existing folder, if needed (it's also done implicitly by SELECT, however, without EXPUNGE then) */
if (imap->selected_folder_needs_expunge) {
if (imap->selected_folder[0]) {
dc_log_info(imap->context, 0, "Expunge messages in \"%s\".", imap->selected_folder);
mailimap_close(imap->etpan); /* a CLOSE-SELECT is considerably faster than an EXPUNGE-SELECT, see https://tools.ietf.org/html/rfc3501#section-6.4.2 */
}
imap->selected_folder_needs_expunge = 0;
}
/* select new folder */
if (folder) {
int r = mailimap_select(imap->etpan, folder);
if (dc_imap_is_error(imap, r) || imap->etpan->imap_selection_info==NULL) {
dc_log_info(imap->context, 0, "Cannot select folder; code=%i, imap_response=%s", r,
imap->etpan->imap_response? imap->etpan->imap_response : "<none>");
imap->selected_folder[0] = 0;
return 0;
}
}
free(imap->selected_folder);
imap->selected_folder = dc_strdup(folder);
return 1;
}
/*******************************************************************************
* Fetch Messages
******************************************************************************/
static uint32_t peek_uid(struct mailimap_msg_att* msg_att)
{
/* search the UID in a list of attributes returned by a FETCH command */
clistiter* iter1;
for (iter1=clist_begin(msg_att->att_list); iter1!=NULL; iter1=clist_next(iter1))
{
struct mailimap_msg_att_item* item = (struct mailimap_msg_att_item*)clist_content(iter1);
if (item)
{