mbx_mbox.c
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/* GNU mailutils - a suite of utilities for electronic mail
Copyright (C) 1999 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Library General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <url_mbox.h>
#include <mbx_mbox.h>
#include <mbx_unix.h>
#include <mbx_mdir.h>
#include <errno.h>
#include <sys/stat.h>
struct mailbox_type _mailbox_mbox_type =
{
"UNIX_MBOX/Maildir/MMDF",
(int)&_url_mbox_type, &_url_mbox_type,
mailbox_mbox_init, mailbox_mbox_destroy
};
/*
if there is no specific URL for file mailbox,
file://<path_name>
It would be preferrable to use :
maildir://<path>
unix://<path>
mmdf://<path>
This would eliminate heuristic discovery that would turn
out to be wrong. Caveat, there is no std URL for those
mailbox.
*/
int
mailbox_mbox_init (mailbox_t *mbox, const char *name)
{
struct stat st;
/*
If they want to creat ?? should they know the type ???
What is the best course of action ??
*/
if (stat (name, &st) == -1)
{
return -1; /* errno set by stat () */
}
if (S_ISREG (st.st_mode))
{
/*
FIXME: We should do an open() and try
to do a better reconnaissance of the type,
maybe MMDF. For now assume Unix MBox */
#if 0
char head[6];
ssize_t cout;
int fd;
fd = open (name, O_RDONLY);
if (fd == -1)
{
/* Oops !! wrong permission ? file deleted ? */
return -1; /* errno set by open () */
}
/* Read a small chunck */
count = read (fd, head, sizeof(head));
/* Try Unix Mbox */
/* FIXME:
What happen if the file is empty ???
Do we default to Unix ??
*/
if (count == 0) /*empty file*/
{
return mailbox_unix_init (mbox, name);
}
if (count >= 5)
{
if (strncmp (head, "From ", 5) == 0)
{
/* This is Unix Mbox */
return mailbox_unix_init (mbox, name);
}
}
/* Try MMDF */
#endif
return mailbox_unix_init (mbox, name);
}
else if (S_ISDIR (st.st_mode))
{
/* Is that true ? Are all directories Maildir ?? */
return mailbox_maildir_init (mbox, name);
}
/* Why can't a mailbox be FIFO ? or a DOOR/Portal ? */
errno = EINVAL;
return -1;
}
void
mailbox_mbox_destroy (mailbox_t *mbox)
{
return (*mbox)->mtype->_destroy (mbox);
}