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/*
Unix SMB/Netbios implementation.
Version 2.0
SMB wrapper stat functions
Copyright (C) Andrew Tridgell 1998
Copyright (C) Derrell Lipman 2003-2005
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "smbw.h"
static int timezone_diff = -1;
#define TM_YEAR_BASE 1900
/*******************************************************************
yield the difference between *A and *B, in seconds, ignoring leap seconds
********************************************************************/
static int tm_diff(struct tm *a, struct tm *b)
{
int ay = a->tm_year + (TM_YEAR_BASE - 1);
int by = b->tm_year + (TM_YEAR_BASE - 1);
int intervening_leap_days =
(ay/4 - by/4) - (ay/100 - by/100) + (ay/400 - by/400);
int years = ay - by;
int days = 365*years + intervening_leap_days + (a->tm_yday - b->tm_yday);
int hours = 24*days + (a->tm_hour - b->tm_hour);
int minutes = 60*hours + (a->tm_min - b->tm_min);
int seconds = 60*minutes + (a->tm_sec - b->tm_sec);
return seconds;
}
/*******************************************************************
return the UTC offset in seconds west of UTC, or 0 if it cannot be determined
******************************************************************/
static int TimeZone(time_t t)
{
struct tm *tm = gmtime(&t);
struct tm tm_utc;
if (!tm)
return 0;
tm_utc = *tm;
tm = localtime(&t);
if (!tm)
return 0;
return tm_diff(&tm_utc,tm);
}
static void copy_stat(struct SMBW_stat *external, struct stat *internal)
{
if (timezone_diff < 0)
{
timezone_diff = TimeZone(time(NULL));
}
external->s_dev = internal->st_dev;
external->s_ino = internal->st_ino;
external->s_mode = internal->st_mode;
external->s_nlink = internal->st_nlink;
external->s_uid = internal->st_uid;
external->s_gid = internal->st_gid;
external->s_rdev = internal->st_rdev;
external->s_size = internal->st_size;
external->s_blksize = internal->st_blksize;
external->s_blocks = internal->st_blocks;
external->s_atime = internal->st_atime + timezone_diff;
external->s_mtime = internal->st_mtime + timezone_diff;
external->s_ctime = internal->st_ctime + timezone_diff;
}
/*****************************************************
a wrapper for fstat()
*******************************************************/
int smbw_fstat(int fd_smbw, struct SMBW_stat *st)
{
int fd_client = smbw_fd_map[fd_smbw];
struct stat statbuf;
if (smbc_fstat(fd_client, &statbuf) < 0) {
return -1;
}
copy_stat(st, &statbuf);
return 0;
}
/*****************************************************
a wrapper for stat()
*******************************************************/
int smbw_stat(const char *fname, struct SMBW_stat *st)
{
int simulate;
char *p;
char path[PATH_MAX];
struct stat statbuf;
SMBW_INIT();
smbw_fix_path(fname, path);
p = path + 6; /* look just past smb:// */
simulate = (strchr(p, '/') == NULL);
/* special case for full-network scan, workgroups, and servers */
if (simulate) {
statbuf.st_dev = 0;
statbuf.st_ino = 0;
statbuf.st_mode = 0040777;
statbuf.st_nlink = 1;
statbuf.st_uid = 0;
statbuf.st_gid = 0;
statbuf.st_rdev = 0;
statbuf.st_size = 0;
statbuf.st_blksize = 1024;
statbuf.st_blocks = 1;
statbuf.st_atime = 0; /* beginning of epoch */
statbuf.st_mtime = 0; /* beginning of epoch */
statbuf.st_ctime = 0; /* beginning of epoch */
} else if (smbc_stat(path, &statbuf) < 0) {
return -1;
}
copy_stat(st, &statbuf);
return 0;
}
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