mbx_mbox.c
3.42 KB
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/* GNU mailutils - a suite of utilities for electronic mail
Copyright (C) 1999, 2000 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. */
#include <mailbox0.h>
#include <registrar0.h>
#include <string.h>
#include <errno.h>
#include <sys/stat.h>
static int mailbox_mbox_create (mailbox_t *mbox, const char *name);
static void mailbox_mbox_destroy (mailbox_t *mbox);
struct mailbox_registrar _mailbox_mbox_registrar =
{
"UNIX_MBOX/Maildir/MMDF",
mailbox_mbox_create, mailbox_mbox_destroy
};
/*
Caveat there is no specific URL for file mailbox or simple path name,
<path_name>
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.
*/
static int
mailbox_mbox_create (mailbox_t *mbox, const char *name)
{
struct stat st;
size_t len;
if (name == NULL || mbox == NULL)
return EINVAL;
len = strlen (name);
if (len >= 5 &&
(name[0] == 'f' || name[0] == 'F') &&
(name[1] == 'i' || name[1] == 'I') &&
(name[2] == 'l' || name[2] == 'L') &&
(name[3] == 'e' || name[3] == 'E') &&
name[4] == ':')
{
name += 5;
}
/*
* If they want to creat ?? should they know the type ???
* What is the best course of action ??
* For the default is unix if the file does not exist.
*/
if (stat (name, &st) < 0)
return _mailbox_unix_registrar._create (mbox, name);
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 errno; /* 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*/
{
close (fd);
return _mailbox_unix_registrar._create (mbox, name);
}
if (count >= 5)
{
if (strncmp (head, "From ", 5) == 0)
{
/* This is a Unix Mbox */
close (fd);
return _mailbox_unix_registrar._create (mbox, name);
}
}
/* Try MMDF */
close (fd);
#endif
return _mailbox_unix_registrar._create (mbox, name);
}
/* Is that true ? Are all directories Maildir ?? */
else if (S_ISDIR (st.st_mode))
return _mailbox_maildir_registrar._create (mbox, name);
/* Why can't a mailbox be FIFO ? or a DOOR/Portal ??? */
return EINVAL;
}
static void
mailbox_mbox_destroy (mailbox_t *pmbox)
{
if (pmbox && *pmbox)
_mailbox_unix_registrar._destroy (pmbox);
}