folder.c
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/* GNU Mailutils -- a suite of utilities for electronic mail
Copyright (C) 1999-2001, 2003-2008, 2010-2012, 2014 Free Software
Foundation, Inc.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 3 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General
Public License along with this library. If not, see
<http://www.gnu.org/licenses/>. */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <errno.h>
#include <sys/types.h>
#include <dirent.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <string.h>
#include <glob.h>
#include <fnmatch.h>
#include <stdio.h>
#include <stdlib.h>
#include <mailutils/sys/folder.h>
#include <mailutils/sys/registrar.h>
#include <mailutils/auth.h>
#include <mailutils/url.h>
#include <mailutils/stream.h>
#include <mailutils/util.h>
#include <mailutils/errno.h>
#include <mailutils/debug.h>
/* We export url parsing and the initialisation of
the mailbox, via the register entry/record. */
static int
_mbox_is_scheme (mu_record_t record, mu_url_t url, int flags)
{
int rc = 0;
int scheme_matched = mu_url_is_scheme (url, record->scheme);
if (scheme_matched || mu_scheme_autodetect_p (url))
{
struct stat st;
const char *path;
mu_url_sget_path (url, &path);
if (stat (path, &st) < 0)
{
if (errno == ENOENT)
{
if (scheme_matched)
return MU_FOLDER_ATTRIBUTE_FILE & flags;
}
return 0;
}
if (S_ISREG (st.st_mode) || S_ISCHR (st.st_mode))
{
if (st.st_size == 0)
{
rc |= MU_FOLDER_ATTRIBUTE_FILE;
}
else if (flags & MU_FOLDER_ATTRIBUTE_FILE)
{
#if 0
/* FIXME: This effectively sieves out all non-mailbox files,
but it makes mu_folder_enumerate crawl, which is
intolerable for imap4d LIST command. */
int fd = open (path, O_RDONLY);
if (fd != -1)
{
char buf[5];
if (read (fd, buf, 5) == 5)
if (memcmp (buf, "From ", 5) == 0)
rc |= MU_FOLDER_ATTRIBUTE_FILE;
close (fd);
}
#else
rc |= MU_FOLDER_ATTRIBUTE_FILE;
#endif
}
}
if ((flags & MU_FOLDER_ATTRIBUTE_DIRECTORY)
&& S_ISDIR (st.st_mode))
rc |= MU_FOLDER_ATTRIBUTE_DIRECTORY;
}
return rc;
}
static struct _mu_record _mbox_record =
{
MU_MBOX_PRIO,
MU_MBOX_SCHEME,
MU_RECORD_LOCAL,
MU_URL_SCHEME | MU_URL_PATH | MU_URL_PARAM,
MU_URL_PATH,
mu_url_expand_path, /* URL init. */
_mailbox_mbox_init, /* Mailbox init. */
NULL, /* Mailer init. */
_mu_fsfolder_init, /* Folder init. */
NULL, /* No need for an back pointer. */
_mbox_is_scheme, /* _is_scheme method. */
NULL, /* _get_url method. */
NULL, /* _get_mailbox method. */
NULL, /* _get_mailer method. */
NULL /* _get_folder method. */
};
mu_record_t mu_mbox_record = &_mbox_record;