static int
pop_unset_attribute (mu_attribute_t attr, int flags)
{
struct _pop3_message *mpm = mu_attribute_get_owner (attr);
if (mpm == NULL)
return EINVAL;
mpm->attr_flags &= ~flags;
mpm->flags |= _POP3_MSG_ATTRSET;
return 0;
}
static int
mbox_unset_attr_flags (mu_attribute_t attr, int flags)
{
mu_message_t msg = mu_attribute_get_owner (attr);
mbox_message_t mum = mu_message_get_owner (msg);
if (mum == NULL)
return EINVAL;
mum->attr_flags &= ~flags;
return 0;
}
/* There is no POP3 command to return message attributes, therefore we
have to recurse to reading the "Status:" header. Unfortunately, some
servers remove it when you dowload a message, and in this case a message
will always look like new even if you already read it. There is also
no way to set an attribute on remote mailbox via the POP server and
many server once you do a RETR (and in some cases a TOP) will mark the
message as read (Status: RO). Even worse, some servers may be configured
to delete after the RETR, and some go as much as deleting after the TOP,
since technicaly you can download a message via TOP without RETR'eiving
it. */
static int
pop_get_attribute (mu_attribute_t attr, int *pflags)
{
struct _pop3_message *mpm = mu_attribute_get_owner (attr);
char hdr_status[64];
mu_header_t header = NULL;
if (mpm == NULL || pflags == NULL)
return EINVAL;
if (!(mpm->flags & _POP3_MSG_ATTRSET))
{
hdr_status[0] = '\0';
mu_message_get_header (mpm->message, &header);
mu_header_get_value (header, MU_HEADER_STATUS,
hdr_status, sizeof hdr_status, NULL);
mu_string_to_flags (hdr_status, &mpm->attr_flags);
}
*pflags = mpm->attr_flags;
return 0;
}
