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/*
* Auditing VFS module for samba. Log selected file operations to syslog
* facility.
*
* Copyright (C) 2001, Brandon Stone, Amherst College, <bbstone@amherst.edu>.
* Copyright (C) 2002, Jeremy Allison - modified to make a VFS module.
*
* 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 "config.h"
#include <stdio.h>
#include <sys/stat.h>
#ifdef HAVE_UTIME_H
#include <utime.h>
#endif
#ifdef HAVE_DIRENT_H
#include <dirent.h>
#endif
#include <syslog.h>
#ifdef HAVE_FCNTL_H
#include <fcntl.h>
#endif
#include <errno.h>
#include <string.h>
#include <includes.h>
#include <vfs.h>
/* VFS operations */
extern struct vfs_ops default_vfs_ops; /* For passthrough operation */
static int recycle_unlink(connection_struct *, const char *);
static int recycle_connect(struct connection_struct *conn, const char *service, const char *user);
static void recycle_disconnect(struct connection_struct *conn);
struct vfs_ops recycle_ops = {
/* Disk operations */
recycle_connect, /* connect */
recycle_disconnect, /* disconnect */
NULL, /* disk free */
/* Directory operations */
NULL, /* opendir */
NULL, /* readdir */
NULL, /* mkdir */
NULL, /* rmdir */
NULL, /* closedir */
/* File operations */
NULL, /* open */
NULL, /* close */
NULL, /* read */
NULL, /* write */
NULL, /* lseek */
NULL, /* rename */
NULL, /* fsync */
NULL, /* stat */
NULL, /* fstat */
NULL, /* lstat */
recycle_unlink,
NULL, /* chmod */
NULL, /* fchmod */
NULL, /* chown */
NULL, /* fchown */
NULL, /* chdir */
NULL, /* getwd */
NULL, /* utime */
NULL, /* ftruncate */
NULL, /* lock */
NULL, /* symlink */
NULL, /* readlink */
NULL, /* link */
NULL, /* mknod */
NULL, /* realpath */
NULL, /* fget_nt_acl */
NULL, /* get_nt_acl */
NULL, /* fset_nt_acl */
NULL, /* set_nt_acl */
NULL, /* chmod_acl */
NULL, /* fchmod_acl */
NULL, /* sys_acl_get_entry */
NULL, /* sys_acl_get_tag_type */
NULL, /* sys_acl_get_permset */
NULL, /* sys_acl_get_qualifier */
NULL, /* sys_acl_get_file */
NULL, /* sys_acl_get_fd */
NULL, /* sys_acl_clear_perms */
NULL, /* sys_acl_add_perm */
NULL, /* sys_acl_to_text */
NULL, /* sys_acl_init */
NULL, /* sys_acl_create_entry */
NULL, /* sys_acl_set_tag_type */
NULL, /* sys_acl_set_qualifier */
NULL, /* sys_acl_set_permset */
NULL, /* sys_acl_valid */
NULL, /* sys_acl_set_file */
NULL, /* sys_acl_set_fd */
NULL, /* sys_acl_delete_def_file */
NULL, /* sys_acl_get_perm */
NULL, /* sys_acl_free_text */
NULL, /* sys_acl_free_acl */
NULL /* sys_acl_free_qualifier */
};
/* VFS initialisation function. Return initialised vfs_ops structure
back to SAMBA. */
struct vfs_ops *vfs_init(int *vfs_version, struct vfs_ops *def_vfs_ops)
{
struct vfs_ops tmp_ops;
*vfs_version = SMB_VFS_INTERFACE_VERSION;
memcpy(&tmp_ops, def_vfs_ops, sizeof(struct vfs_ops));
tmp_ops.unlink = recycle_unlink;
tmp_ops.connect = recycle_connect;
tmp_ops.disconnect = recycle_disconnect;
memcpy(&recycle_ops, &tmp_ops, sizeof(struct vfs_ops));
return &recycle_ops;
}
static int recycle_connect(struct connection_struct *conn, const char *service, const char *user)
{
pstring opts_str;
fstring recycle_bin;
char *p;
DEBUG(3,("recycle_connect: called for service %s as user %s\n", service, user));
pstrcpy(opts_str, (const char *)lp_vfs_options(SNUM(conn)));
if (!*opts_str) {
DEBUG(3,("recycle_connect: No options listed (%s).\n", lp_vfs_options(SNUM(conn)) ));
return 0; /* No options. */
}
p = opts_str;
if (next_token(&p,recycle_bin,"=",sizeof(recycle_bin))) {
if (!strequal("recycle", recycle_bin)) {
DEBUG(3,("recycle_connect: option %s is not recycle\n", recycle_bin ));
return -1;
}
}
if (!next_token(&p,recycle_bin," \n",sizeof(recycle_bin))) {
DEBUG(3,("recycle_connect: no option after recycle=\n"));
return -1;
}
DEBUG(10,("recycle_connect: recycle name is %s\n", recycle_bin ));
conn->vfs_private = (void *)strdup(recycle_bin);
return 0;
}
static void recycle_disconnect(struct connection_struct *conn)
{
SAFE_FREE(conn->vfs_private);
}
static BOOL recycle_XXX_exist(connection_struct *conn, const char *dname, BOOL isdir)
{
SMB_STRUCT_STAT st;
if (default_vfs_ops.stat(conn,dname,&st) != 0)
return(False);
if (isdir)
return S_ISDIR(st.st_mode) ? True : False;
else
return S_ISREG(st.st_mode) ? True : False;
}
static BOOL recycle_directory_exist(connection_struct *conn, const char *dname)
{
return recycle_XXX_exist(conn, dname, True);
}
static BOOL recycle_file_exist(connection_struct *conn, const char *fname)
{
return recycle_XXX_exist(conn, fname, False);
}
static SMB_OFF_T recycle_get_file_size(connection_struct *conn, const char *fname)
{
SMB_STRUCT_STAT st;
if (default_vfs_ops.stat(conn,fname,&st) != 0)
return (SMB_OFF_T)-1;
return(st.st_size);
}
/********************************************************************
Check if file should be recycled
*********************************************************************/
static int recycle_unlink(connection_struct *conn, const char *inname)
{
fstring recycle_bin;
pstring fname;
char *base, *ext;
pstring bin;
int i=1, len, addlen;
int dir_mask=0770;
SMB_BIG_UINT dfree,dsize,bsize;
*recycle_bin = '\0';
pstrcpy(fname, inname);
if (conn->vfs_private)
fstrcpy(recycle_bin, (const char *)conn->vfs_private);
if(!*recycle_bin) {
DEBUG(3, ("recycle bin: share parameter not set, purging %s...\n", fname));
return default_vfs_ops.unlink(conn,fname);
}
if(recycle_get_file_size(conn, fname) == 0) {
DEBUG(3, ("recycle bin: file %s is empty, purging...\n", fname));
return default_vfs_ops.unlink(conn,fname);
}
base = strrchr(fname, '/') + 1;
if(base == (char*)1)
ext = strrchr(fname, '.');
else
ext = strrchr(base, '.');
pstrcpy(bin, recycle_bin);
pstrcat(bin, "/");
pstrcat(bin, base);
if(strcmp(fname,bin) == 0) {
DEBUG(3, ("recycle bin: file %s exists, purging...\n", fname));
return default_vfs_ops.unlink(conn,fname);
}
len = strlen(bin);
addlen = sizeof(pstring)-len-1;
while(recycle_file_exist(conn,bin)) {
slprintf(bin+len, addlen, " (Copy #%d)", i++);
pstrcat(bin, ext);
}
DEBUG(3, ("recycle bin: moving source=%s to dest=%s\n", fname, bin));
default_vfs_ops.disk_free(conn,".",True,&bsize,&dfree,&dsize);
if((unsigned int)dfree > 0) {
int ret;
if(!recycle_directory_exist(conn,recycle_bin)) {
DEBUG(3, ("recycle bin: directory %s nonexistant, creating...\n", recycle_bin));
if (default_vfs_ops.mkdir(conn,recycle_bin,dir_mask) == -1) {
DEBUG(3, ("recycle bin: unable to create directory %s. Error was %s\n",
recycle_bin, strerror(errno) ));
}
}
DEBUG(3, ("recycle bin: move %s -> %s\n", fname, bin));
ret = default_vfs_ops.rename(conn, fname, bin);
if (ret == -1) {
DEBUG(3, ("recycle bin: move error %d (%s)\n", errno, strerror(errno) ));
DEBUG(3, ("recycle bin: move failed, purging...\n"));
return default_vfs_ops.unlink(conn,fname);
}
return ret;
} else {
DEBUG(3, ("recycle bin: move failed, purging...\n"));
return default_vfs_ops.unlink(conn,fname);
}
}
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