/**
* comp_mbox_open - Implements MxOps::mbox_open()
*
* Set up a compressed mailbox to be read.
* Decompress the mailbox and set up the paths and hooks needed.
* Then determine the type of the mailbox so we can delegate the handling of
* messages.
*/
static int comp_mbox_open(struct Mailbox *m)
{
if (!m || (m->magic != MUTT_COMPRESSED))
return -1;
struct CompressInfo *ci = set_compress_info(m);
if (!ci)
return -1;
/* If there's no close-hook, or the file isn't writable */
if (!ci->cmd_close || (access(m->path, W_OK) != 0))
m->readonly = true;
if (setup_paths(m) != 0)
goto cmo_fail;
store_size(m);
if (!lock_realpath(m, false))
{
mutt_error(_("Unable to lock mailbox"));
goto cmo_fail;
}
int rc = execute_command(m, ci->cmd_open, _("Decompressing %s"));
if (rc == 0)
goto cmo_fail;
unlock_realpath(m);
m->magic = mx_path_probe(m->path, NULL);
if (m->magic == MUTT_UNKNOWN)
{
mutt_error(_("Can't identify the contents of the compressed file"));
goto cmo_fail;
}
ci->child_ops = mx_get_ops(m->magic);
if (!ci->child_ops)
{
mutt_error(_("Can't find mailbox ops for mailbox type %d"), m->magic);
goto cmo_fail;
}
m->account->magic = m->magic;
return ci->child_ops->mbox_open(m);
cmo_fail:
/* remove the partial uncompressed file */
remove(m->path);
free_compress_info(m);
return -1;
}
/**
* mbox_test_new_folder - Test if an mbox or mmdf mailbox has new mail
* @param path Path to the mailbox
* @retval bool true if the folder contains new mail
*/
bool mbox_test_new_folder(const char *path)
{
bool rc = false;
enum MailboxType magic = mx_path_probe(path, NULL);
if ((magic != MUTT_MBOX) && (magic != MUTT_MMDF))
return false;
FILE *fp = fopen(path, "rb");
if (fp)
{
rc = test_last_status_new(fp);
mutt_file_fclose(&fp);
}
return rc;
}
/**
* comp_mbox_open_append - Implements MxOps::mbox_open_append()
*
* flags may also contain #MUTT_NEWFOLDER
*
* To append to a compressed mailbox we need an append-hook (or both open- and
* close-hooks).
*/
static int comp_mbox_open_append(struct Mailbox *m, OpenMailboxFlags flags)
{
if (!m)
return -1;
/* If this succeeds, we know there's an open-hook */
struct CompressInfo *ci = set_compress_info(m);
if (!ci)
return -1;
/* To append we need an append-hook or a close-hook */
if (!ci->cmd_append && !ci->cmd_close)
{
mutt_error(_("Cannot append without an append-hook or close-hook : %s"), m->path);
goto cmoa_fail1;
}
if (setup_paths(m) != 0)
goto cmoa_fail2;
/* Lock the realpath for the duration of the append.
* It will be unlocked in the close */
if (!lock_realpath(m, true))
{
mutt_error(_("Unable to lock mailbox"));
goto cmoa_fail2;
}
/* Open the existing mailbox, unless we are appending */
if (!ci->cmd_append && (mutt_file_get_size(m->realpath) > 0))
{
int rc = execute_command(m, ci->cmd_open, _("Decompressing %s"));
if (rc == 0)
{
mutt_error(_("Compress command failed: %s"), ci->cmd_open);
goto cmoa_fail2;
}
m->magic = mx_path_probe(m->path, NULL);
}
else
m->magic = C_MboxType;
/* We can only deal with mbox and mmdf mailboxes */
if ((m->magic != MUTT_MBOX) && (m->magic != MUTT_MMDF))
{
mutt_error(_("Unsupported mailbox type for appending"));
goto cmoa_fail2;
}
ci->child_ops = mx_get_ops(m->magic);
if (!ci->child_ops)
{
mutt_error(_("Can't find mailbox ops for mailbox type %d"), m->magic);
goto cmoa_fail2;
}
if (ci->child_ops->mbox_open_append(m, flags) != 0)
goto cmoa_fail2;
return 0;
cmoa_fail2:
/* remove the partial uncompressed file */
remove(m->path);
cmoa_fail1:
/* Free the compress_info to prevent close from trying to recompress */
free_compress_info(m);
return -1;
}