[VFS] CAP module
TAKAHASHI Motonobu
monyo at home.monyo.com
Wed Aug 27 16:54:51 GMT 2003
TAKAHASHI Motonobu wrote:
>Though it's easy to add this process mechanically, currently I did not
>implement the CAP encoding/decoding process about EA operations
>functions because I do not know how to test them.
The attachment file is a new version of cap.c, adding cap
encoding/decoding routing for EA functions. Also I put this on my web
site:
http://www.monyo.com/technical/samba/vfs/cap/
-----
TAKAHASHI, Motonobu (monyo) monyo at home.monyo.com
http://www.monyo.com/
-------------- next part --------------
/*
* CAP VFS module for Samba 3.x Version 0.3
*
* Copyright (C) Tim Potter, 1999-2000
* Copyright (C) Alexander Bokovoy, 2002
* Copyright (C) Stefan (metze) Metzmacher, 2003
* Copyright (C) TAKAHASHI Motonobu (monyo), 2003
*
* 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 "includes.h"
/* cap functions */
static char *capencode(char *to, const char *from);
static char *capdecode(char *to, const char *from);
static SMB_BIG_UINT skel_disk_free(vfs_handle_struct *handle, connection_struct *conn, const char *path,
BOOL small_query, SMB_BIG_UINT *bsize,
SMB_BIG_UINT *dfree, SMB_BIG_UINT *dsize)
{
pstring cappath;
capencode(cappath, path);
return SMB_VFS_NEXT_DISK_FREE(handle, conn, cappath, small_query, bsize,
dfree, dsize);
}
static int skel_set_quota(vfs_handle_struct *handle, connection_struct *conn, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *dq)
{
return SMB_VFS_NEXT_SET_QUOTA(handle, conn, qtype, id, dq);
}
static DIR *cap_opendir(vfs_handle_struct *handle, connection_struct *conn, const char *fname)
{
pstring capname;
capencode(capname, fname);
return SMB_VFS_NEXT_OPENDIR(handle, conn, capname);
}
static struct dirent *cap_readdir(vfs_handle_struct *handle, connection_struct *conn, DIR *dirp)
{
struct dirent *result;
DEBUG(3,("cap: cap_readdir\n"));
result = SMB_VFS_NEXT_READDIR(handle, conn, dirp);
if (result) {
DEBUG(3,("cap: cap_readdir: %s\n", result->d_name));
capdecode(result->d_name, result->d_name);
}
return result;
}
static int cap_mkdir(vfs_handle_struct *handle, connection_struct *conn, const char *path, mode_t mode)
{
pstring cappath;
capencode(cappath, path);
return SMB_VFS_NEXT_MKDIR(handle, conn, cappath, mode);
}
static int cap_rmdir(vfs_handle_struct *handle, connection_struct *conn, const char *path)
{
pstring cappath;
capencode(cappath, path);
return SMB_VFS_NEXT_RMDIR(handle, conn, cappath);
}
static int cap_open(vfs_handle_struct *handle, connection_struct *conn, const char *fname, int flags, mode_t mode)
{
pstring capname;
DEBUG(3,("cap: cap_open for %s\n", fname));
capencode(capname, fname);
return SMB_VFS_NEXT_OPEN(handle, conn, capname, flags, mode);
}
static int cap_rename(vfs_handle_struct *handle, connection_struct *conn, const char *old, const char *new)
{
pstring capold, capnew;
capencode(capold, old);
capencode(capnew, new);
return SMB_VFS_NEXT_RENAME(handle, conn, capold, capnew);
}
static int cap_stat(vfs_handle_struct *handle, connection_struct *conn, const char *fname, SMB_STRUCT_STAT *sbuf)
{
pstring capname;
capencode(capname, fname);
return SMB_VFS_NEXT_STAT(handle, conn, capname, sbuf);
}
static int skel_lstat(vfs_handle_struct *handle, connection_struct *conn, const char *path, SMB_STRUCT_STAT *sbuf)
{
pstring cappath;
capencode(cappath, path);
return SMB_VFS_NEXT_LSTAT(handle, conn, cappath, sbuf);
}
static int skel_unlink(vfs_handle_struct *handle, connection_struct *conn, const char *path)
{
pstring cappath;
capencode(cappath, path);
return SMB_VFS_NEXT_UNLINK(handle, conn, cappath);
}
static int cap_chmod(vfs_handle_struct *handle, connection_struct *conn, const char *path, mode_t mode)
{
pstring cappath;
capencode(cappath, path);
return SMB_VFS_NEXT_CHMOD(handle, conn, cappath, mode);
}
static int cap_chown(vfs_handle_struct *handle, connection_struct *conn, const char *path, uid_t uid, gid_t gid)
{
pstring cappath;
capencode(cappath, path);
return SMB_VFS_NEXT_CHOWN(handle, conn, cappath, uid, gid);
}
static int cap_chdir(vfs_handle_struct *handle, connection_struct *conn, const char *path)
{
pstring cappath;
DEBUG(3,("cap: cap_chdir for %s\n", path));
capencode(cappath, path);
return SMB_VFS_NEXT_CHDIR(handle, conn, cappath);
}
static int skel_utime(vfs_handle_struct *handle, connection_struct *conn, const char *path, struct utimbuf *times)
{
pstring cappath;
capencode(cappath, path);
return SMB_VFS_NEXT_UTIME(handle, conn, cappath, times);
}
static BOOL skel_symlink(vfs_handle_struct *handle, connection_struct *conn, const char *oldpath, const char *newpath)
{
pstring capoldpath, capnewpath;
capencode(capoldpath, oldpath);
capencode(capnewpath, newpath);
return SMB_VFS_NEXT_SYMLINK(handle, conn, capoldpath, capnewpath);
}
static BOOL skel_readlink(vfs_handle_struct *handle, connection_struct *conn, const char *path, char *buf, size_t bufsiz)
{
pstring cappath;
capencode(cappath, path);
return SMB_VFS_NEXT_READLINK(handle, conn, cappath, buf, bufsiz);
}
static int skel_link(vfs_handle_struct *handle, connection_struct *conn, const char *oldpath, const char *newpath)
{
pstring capoldpath, capnewpath;
capencode(capoldpath, oldpath);
capencode(capnewpath, newpath);
return SMB_VFS_NEXT_LINK(handle, conn, capoldpath, capnewpath);
}
static int skel_mknod(vfs_handle_struct *handle, connection_struct *conn, const char *path, mode_t mode, SMB_DEV_T dev)
{
pstring cappath;
capencode(cappath, path);
return SMB_VFS_NEXT_MKNOD(handle, conn, cappath, mode, dev);
}
static char *skel_realpath(vfs_handle_struct *handle, connection_struct *conn, const char *path, char *resolved_path)
{
/* monyo need capencode'ed and capdecode'ed? */
pstring cappath;
capencode(cappath, path);
return SMB_VFS_NEXT_REALPATH(handle, conn, path, resolved_path);
}
static BOOL skel_set_nt_acl(vfs_handle_struct *handle, files_struct *fsp, const char *name, uint32 security_info_sent, struct security_descriptor_info *psd)
{
pstring capname;
capencode(capname, name);
return SMB_VFS_NEXT_SET_NT_ACL(handle, fsp, capname, security_info_sent, psd);
}
static int skel_chmod_acl(vfs_handle_struct *handle, connection_struct *conn, const char *name, mode_t mode)
{
pstring capname;
capencode(capname, name);
/* If the underlying VFS doesn't have ACL support... */
if (!handle->vfs_next.ops.chmod_acl) {
errno = ENOSYS;
return -1;
}
return SMB_VFS_NEXT_CHMOD_ACL(handle, conn, capname, mode);
}
static SMB_ACL_T skel_sys_acl_get_file(vfs_handle_struct *handle, connection_struct *conn, const char *path_p, SMB_ACL_TYPE_T type)
{
pstring cappath_p;
capencode(cappath_p, path_p);
return SMB_VFS_NEXT_SYS_ACL_GET_FILE(handle, conn, cappath_p, type);
}
static int skel_sys_acl_set_file(vfs_handle_struct *handle, connection_struct *conn, const char *name, SMB_ACL_TYPE_T acltype, SMB_ACL_T theacl)
{
pstring capname;
capencode(capname, name);
return SMB_VFS_NEXT_SYS_ACL_SET_FILE(handle, conn, capname, acltype, theacl);
}
static int skel_sys_acl_delete_def_file(vfs_handle_struct *handle, connection_struct *conn, const char *path)
{
pstring cappath;
capencode(cappath, path);
return SMB_VFS_NEXT_SYS_ACL_DELETE_DEF_FILE(handle, conn, cappath);
}
static ssize_t skel_getxattr(vfs_handle_struct *handle, struct connection_struct *conn,const char *path, const char *name, void *value, size_t size)
{
pstring cappath, capname;
capencode(cappath, path);
capencode(capname, name);
return SMB_VFS_NEXT_GETXATTR(handle, conn, cappath, capname, value, size);
}
static ssize_t skel_lgetxattr(vfs_handle_struct *handle, struct connection_struct *conn,const char *path, const char *name, void *value, size_t
size)
{
pstring cappath, capname;
capencode(cappath, path);
capencode(capname, name);
return SMB_VFS_NEXT_LGETXATTR(handle, conn, cappath, capname, value, size);
}
static ssize_t skel_fgetxattr(vfs_handle_struct *handle, struct files_struct *fsp,int fd, const char *name, void *value, size_t size)
{
pstring capname;
capencode(capname, name);
return SMB_VFS_NEXT_FGETXATTR(handle, fsp, fd, capname, value, size);
}
static ssize_t skel_listxattr(vfs_handle_struct *handle, struct connection_struct *conn,const char *path, char *list, size_t size)
{
pstring cappath;
capencode(cappath, path);
return SMB_VFS_NEXT_LISTXATTR(handle, conn, cappath, list, size);
}
static ssize_t skel_llistxattr(vfs_handle_struct *handle, struct connection_struct *conn,const char *path, char *list, size_t size)
{
pstring cappath;
capencode(cappath, path);
return SMB_VFS_NEXT_LLISTXATTR(handle, conn, cappath, list, size);
}
static int skel_removexattr(vfs_handle_struct *handle, struct connection_struct *conn,const char *path, const char *name)
{
pstring cappath, capname;
capencode(cappath, path);
capencode(capname, name);
return SMB_VFS_NEXT_REMOVEXATTR(handle, conn, cappath, capname);
}
static int skel_lremovexattr(vfs_handle_struct *handle, struct connection_struct *conn,const char *path, const char *name)
{
pstring cappath, capname;
capencode(cappath, path);
capencode(capname, name);
return SMB_VFS_NEXT_LREMOVEXATTR(handle, conn, cappath, capname);
}
static int skel_fremovexattr(vfs_handle_struct *handle, struct files_struct *fsp,int fd, const char *name)
{
pstring capname;
capencode(capname, name);
return SMB_VFS_NEXT_FREMOVEXATTR(handle, fsp, fd, capname);
}
static int skel_setxattr(vfs_handle_struct *handle, struct connection_struct *conn,const char *path, const char *name, const void *value, size_t size, int flags)
{
pstring cappath, capname;
capencode(cappath, path);
capencode(capname, name);
return SMB_VFS_NEXT_SETXATTR(handle, conn, cappath, capname, value, size, flags);
}
static int skel_lsetxattr(vfs_handle_struct *handle, struct connection_struct *conn,const char *path, const char *name, const void *value, size_t size, int flags)
{
pstring cappath, capname;
capencode(cappath, path);
capencode(capname, name);
return SMB_VFS_NEXT_LSETXATTR(handle, conn, cappath, capname, value, size, flags);
}
static int skel_fsetxattr(vfs_handle_struct *handle, struct files_struct *fsp,int fd, const char *name, const void *value, size_t size, int flags)
{
pstring capname;
capencode(capname, name);
return SMB_VFS_NEXT_FSETXATTR(handle, fsp, fd, capname, value, size, flags);
}
/* VFS operations structure */
static vfs_op_tuple cap_op_tuples[] = {
/* Disk operations */
{SMB_VFS_OP(skel_disk_free), SMB_VFS_OP_DISK_FREE, SMB_VFS_LAYER_TRANSPARENT},
/* Directory operations */
{SMB_VFS_OP(cap_opendir), SMB_VFS_OP_OPENDIR, SMB_VFS_LAYER_TRANSPARENT},
{SMB_VFS_OP(cap_readdir), SMB_VFS_OP_READDIR, SMB_VFS_LAYER_TRANSPARENT},
{SMB_VFS_OP(cap_mkdir), SMB_VFS_OP_MKDIR, SMB_VFS_LAYER_TRANSPARENT},
{SMB_VFS_OP(cap_rmdir), SMB_VFS_OP_RMDIR, SMB_VFS_LAYER_TRANSPARENT},
/* File operations */
{SMB_VFS_OP(cap_open), SMB_VFS_OP_OPEN, SMB_VFS_LAYER_TRANSPARENT},
{SMB_VFS_OP(cap_rename), SMB_VFS_OP_RENAME, SMB_VFS_LAYER_TRANSPARENT},
{SMB_VFS_OP(cap_stat), SMB_VFS_OP_STAT, SMB_VFS_LAYER_TRANSPARENT},
{SMB_VFS_OP(skel_lstat), SMB_VFS_OP_LSTAT, SMB_VFS_LAYER_TRANSPARENT},
{SMB_VFS_OP(skel_unlink), SMB_VFS_OP_UNLINK, SMB_VFS_LAYER_TRANSPARENT},
{SMB_VFS_OP(cap_chmod), SMB_VFS_OP_CHMOD, SMB_VFS_LAYER_TRANSPARENT},
{SMB_VFS_OP(cap_chown), SMB_VFS_OP_CHOWN, SMB_VFS_LAYER_TRANSPARENT},
{SMB_VFS_OP(cap_chdir), SMB_VFS_OP_CHDIR, SMB_VFS_LAYER_TRANSPARENT},
{SMB_VFS_OP(skel_utime), SMB_VFS_OP_UTIME, SMB_VFS_LAYER_TRANSPARENT},
{SMB_VFS_OP(skel_symlink), SMB_VFS_OP_SYMLINK, SMB_VFS_LAYER_TRANSPARENT},
{SMB_VFS_OP(skel_readlink), SMB_VFS_OP_READLINK, SMB_VFS_LAYER_TRANSPARENT},
{SMB_VFS_OP(skel_link), SMB_VFS_OP_LINK, SMB_VFS_LAYER_TRANSPARENT},
{SMB_VFS_OP(skel_mknod), SMB_VFS_OP_MKNOD, SMB_VFS_LAYER_TRANSPARENT},
{SMB_VFS_OP(skel_realpath), SMB_VFS_OP_REALPATH, SMB_VFS_LAYER_TRANSPARENT},
/* NT File ACL operations */
{SMB_VFS_OP(skel_set_nt_acl), SMB_VFS_OP_SET_NT_ACL, SMB_VFS_LAYER_TRANSPARENT},
/* POSIX ACL operations */
{SMB_VFS_OP(skel_chmod_acl), SMB_VFS_OP_CHMOD_ACL, SMB_VFS_LAYER_TRANSPARENT},
{SMB_VFS_OP(skel_sys_acl_get_file), SMB_VFS_OP_SYS_ACL_GET_FILE, SMB_VFS_LAYER_TRANSPARENT},
{SMB_VFS_OP(skel_sys_acl_set_file), SMB_VFS_OP_SYS_ACL_SET_FILE, SMB_VFS_LAYER_TRANSPARENT},
{SMB_VFS_OP(skel_sys_acl_delete_def_file), SMB_VFS_OP_SYS_ACL_DELETE_DEF_FILE, SMB_VFS_LAYER_TRANSPARENT},
/* EA operations. */
{SMB_VFS_OP(skel_getxattr), SMB_VFS_OP_GETXATTR, SMB_VFS_LAYER_TRANSPARENT},
{SMB_VFS_OP(skel_lgetxattr), SMB_VFS_OP_LGETXATTR, SMB_VFS_LAYER_TRANSPARENT},
{SMB_VFS_OP(skel_fgetxattr), SMB_VFS_OP_FGETXATTR, SMB_VFS_LAYER_TRANSPARENT},
{SMB_VFS_OP(skel_listxattr), SMB_VFS_OP_LISTXATTR, SMB_VFS_LAYER_TRANSPARENT},
{SMB_VFS_OP(skel_llistxattr), SMB_VFS_OP_LLISTXATTR, SMB_VFS_LAYER_TRANSPARENT},
{SMB_VFS_OP(skel_removexattr), SMB_VFS_OP_REMOVEXATTR, SMB_VFS_LAYER_TRANSPARENT},
{SMB_VFS_OP(skel_lremovexattr), SMB_VFS_OP_LREMOVEXATTR, SMB_VFS_LAYER_TRANSPARENT},
{SMB_VFS_OP(skel_fremovexattr), SMB_VFS_OP_FREMOVEXATTR, SMB_VFS_LAYER_TRANSPARENT},
{SMB_VFS_OP(skel_setxattr), SMB_VFS_OP_SETXATTR, SMB_VFS_LAYER_TRANSPARENT},
{SMB_VFS_OP(skel_lsetxattr), SMB_VFS_OP_LSETXATTR, SMB_VFS_LAYER_TRANSPARENT},
{SMB_VFS_OP(skel_fsetxattr), SMB_VFS_OP_FSETXATTR, SMB_VFS_LAYER_TRANSPARENT},
{NULL, SMB_VFS_OP_NOOP, SMB_VFS_LAYER_NOOP}
};
NTSTATUS init_module(void)
{
return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "cap", cap_op_tuples);
}
/* For CAP functions */
#define hex_tag ':'
#define hex2bin(c) hex2bin_table[(unsigned char)(c)]
#define bin2hex(c) bin2hex_table[(unsigned char)(c)]
#define is_hex(s) ((s)[0] == hex_tag)
static unsigned char hex2bin_table[256] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x00 */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x10 */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x20 */
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 0, 0, 0, 0, 0, /* 0x30 */
0000, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0000, /* 0x40 */
0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x50 */
0000, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0000, /* 0x60 */
0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x70 */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x80 */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x90 */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xa0 */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xb0 */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xc0 */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xd0 */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xe0 */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 /* 0xf0 */
};
static unsigned char bin2hex_table[256] = "0123456789abcdef";
/*******************************************************************
original code -> ":xx" - CAP format
********************************************************************/
static char *capencode(char *to, const char *from)
{
pstring cvtbuf;
char *out;
if (to == from) {
from = pstrcpy ((char *) cvtbuf, from);
}
for (out = to; *from && (out - to < sizeof(pstring)-7);) {
/* buffer husoku error */
if ((unsigned char)*from >= 0x80) {
*out++ = hex_tag;
*out++ = bin2hex (((*from)>>4)&0x0f);
*out++ = bin2hex ((*from)&0x0f);
from++;
}
else {
*out++ = *from++;
}
}
*out = '\0';
return to;
}
/*******************************************************************
CAP -> original code
********************************************************************/
/* ":xx" -> a byte */
static char *capdecode(char *to, const char *from)
{
pstring cvtbuf;
char *out;
if (to == from) {
from = pstrcpy ((char *) cvtbuf, from);
}
for (out = to; *from && (out - to < sizeof(pstring)-3);) {
if (is_hex(from)) {
*out++ = (hex2bin (from[1])<<4) | (hex2bin (from[2]));
from += 3;
} else {
*out++ = *from++;
}
}
*out = '\0';
return to;
}
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