mirror of
https://github.com/samba-team/samba.git
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c74ae37fe6
Preparing to reduce use of lp_posix_pathnames().
Uses the same techniques as commit 616d068f0c
(synthetic_smb_fname()) to cope with modules that
modify the incoming pathname.
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
717 lines
17 KiB
C
717 lines
17 KiB
C
/*
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* CAP VFS module for Samba 3.x Version 0.3
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*
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* Copyright (C) Tim Potter, 1999-2000
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* Copyright (C) Alexander Bokovoy, 2002-2003
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* Copyright (C) Stefan (metze) Metzmacher, 2003
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* Copyright (C) TAKAHASHI Motonobu (monyo), 2003
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* Copyright (C) Jeremy Allison, 2007
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "includes.h"
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#include "smbd/smbd.h"
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/* cap functions */
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static char *capencode(TALLOC_CTX *ctx, const char *from);
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static char *capdecode(TALLOC_CTX *ctx, const char *from);
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static uint64_t cap_disk_free(vfs_handle_struct *handle, const char *path,
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uint64_t *bsize, uint64_t *dfree, uint64_t *dsize)
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{
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char *cappath = capencode(talloc_tos(), path);
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if (!cappath) {
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errno = ENOMEM;
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return (uint64_t)-1;
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}
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return SMB_VFS_NEXT_DISK_FREE(handle, cappath, bsize, dfree, dsize);
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}
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static int cap_get_quota(vfs_handle_struct *handle, const char *path,
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enum SMB_QUOTA_TYPE qtype, unid_t id,
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SMB_DISK_QUOTA *dq)
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{
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char *cappath = capencode(talloc_tos(), path);
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if (!cappath) {
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errno = ENOMEM;
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return -1;
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}
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return SMB_VFS_NEXT_GET_QUOTA(handle, cappath, qtype, id, dq);
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}
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static DIR *cap_opendir(vfs_handle_struct *handle,
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const struct smb_filename *smb_fname,
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const char *mask,
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uint32_t attr)
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{
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char *capname = capencode(talloc_tos(), smb_fname->base_name);
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struct smb_filename *cap_smb_fname = NULL;
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if (!capname) {
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errno = ENOMEM;
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return NULL;
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}
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cap_smb_fname = synthetic_smb_fname(talloc_tos(),
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capname,
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NULL,
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NULL);
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if (cap_smb_fname == NULL) {
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TALLOC_FREE(capname);
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errno = ENOMEM;
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return NULL;
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}
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return SMB_VFS_NEXT_OPENDIR(handle, cap_smb_fname, mask, attr);
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}
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static struct dirent *cap_readdir(vfs_handle_struct *handle,
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DIR *dirp,
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SMB_STRUCT_STAT *sbuf)
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{
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struct dirent *result;
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struct dirent *newdirent;
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char *newname;
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size_t newnamelen;
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DEBUG(3,("cap: cap_readdir\n"));
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result = SMB_VFS_NEXT_READDIR(handle, dirp, NULL);
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if (!result) {
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return NULL;
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}
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newname = capdecode(talloc_tos(), result->d_name);
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if (!newname) {
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return NULL;
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}
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DEBUG(3,("cap: cap_readdir: %s\n", newname));
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newnamelen = strlen(newname)+1;
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newdirent = talloc_size(
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talloc_tos(), sizeof(struct dirent) + newnamelen);
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if (!newdirent) {
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return NULL;
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}
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talloc_set_name_const(newdirent, "struct dirent");
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memcpy(newdirent, result, sizeof(struct dirent));
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memcpy(&newdirent->d_name, newname, newnamelen);
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return newdirent;
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}
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static int cap_mkdir(vfs_handle_struct *handle,
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const struct smb_filename *smb_fname,
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mode_t mode)
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{
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char *cappath = capencode(talloc_tos(), smb_fname->base_name);
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struct smb_filename *cap_smb_fname = NULL;
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if (!cappath) {
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errno = ENOMEM;
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return -1;
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}
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cap_smb_fname = synthetic_smb_fname(talloc_tos(),
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cappath,
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NULL,
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NULL);
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if (cap_smb_fname == NULL) {
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TALLOC_FREE(cappath);
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errno = ENOMEM;
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return -1;
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}
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return SMB_VFS_NEXT_MKDIR(handle, cap_smb_fname, mode);
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}
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static int cap_rmdir(vfs_handle_struct *handle,
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const struct smb_filename *smb_fname)
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{
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char *cappath = capencode(talloc_tos(), smb_fname->base_name);
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struct smb_filename *cap_smb_fname = NULL;
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if (!cappath) {
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errno = ENOMEM;
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return -1;
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}
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cap_smb_fname = synthetic_smb_fname(talloc_tos(),
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cappath,
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NULL,
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NULL);
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if (cap_smb_fname == NULL) {
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TALLOC_FREE(cappath);
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errno = ENOMEM;
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return -1;
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}
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return SMB_VFS_NEXT_RMDIR(handle, cap_smb_fname);
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}
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static int cap_open(vfs_handle_struct *handle, struct smb_filename *smb_fname,
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files_struct *fsp, int flags, mode_t mode)
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{
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char *cappath;
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char *tmp_base_name = NULL;
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int ret;
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cappath = capencode(talloc_tos(), smb_fname->base_name);
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if (!cappath) {
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errno = ENOMEM;
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return -1;
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}
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tmp_base_name = smb_fname->base_name;
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smb_fname->base_name = cappath;
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DEBUG(3,("cap: cap_open for %s\n", smb_fname_str_dbg(smb_fname)));
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ret = SMB_VFS_NEXT_OPEN(handle, smb_fname, fsp, flags, mode);
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smb_fname->base_name = tmp_base_name;
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TALLOC_FREE(cappath);
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return ret;
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}
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static int cap_rename(vfs_handle_struct *handle,
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const struct smb_filename *smb_fname_src,
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const struct smb_filename *smb_fname_dst)
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{
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char *capold = NULL;
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char *capnew = NULL;
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struct smb_filename *smb_fname_src_tmp = NULL;
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struct smb_filename *smb_fname_dst_tmp = NULL;
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int ret = -1;
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capold = capencode(talloc_tos(), smb_fname_src->base_name);
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capnew = capencode(talloc_tos(), smb_fname_dst->base_name);
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if (!capold || !capnew) {
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errno = ENOMEM;
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goto out;
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}
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/* Setup temporary smb_filename structs. */
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smb_fname_src_tmp = cp_smb_filename(talloc_tos(), smb_fname_src);
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if (smb_fname_src_tmp == NULL) {
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errno = ENOMEM;
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goto out;
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}
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smb_fname_dst_tmp = cp_smb_filename(talloc_tos(), smb_fname_dst);
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if (smb_fname_dst_tmp == NULL) {
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errno = ENOMEM;
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goto out;
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}
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smb_fname_src_tmp->base_name = capold;
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smb_fname_dst_tmp->base_name = capnew;
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ret = SMB_VFS_NEXT_RENAME(handle, smb_fname_src_tmp,
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smb_fname_dst_tmp);
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out:
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TALLOC_FREE(capold);
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TALLOC_FREE(capnew);
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TALLOC_FREE(smb_fname_src_tmp);
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TALLOC_FREE(smb_fname_dst_tmp);
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return ret;
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}
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static int cap_stat(vfs_handle_struct *handle, struct smb_filename *smb_fname)
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{
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char *cappath;
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char *tmp_base_name = NULL;
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int ret;
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cappath = capencode(talloc_tos(), smb_fname->base_name);
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if (!cappath) {
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errno = ENOMEM;
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return -1;
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}
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tmp_base_name = smb_fname->base_name;
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smb_fname->base_name = cappath;
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ret = SMB_VFS_NEXT_STAT(handle, smb_fname);
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smb_fname->base_name = tmp_base_name;
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TALLOC_FREE(cappath);
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return ret;
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}
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static int cap_lstat(vfs_handle_struct *handle, struct smb_filename *smb_fname)
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{
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char *cappath;
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char *tmp_base_name = NULL;
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int ret;
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cappath = capencode(talloc_tos(), smb_fname->base_name);
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if (!cappath) {
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errno = ENOMEM;
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return -1;
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}
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tmp_base_name = smb_fname->base_name;
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smb_fname->base_name = cappath;
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ret = SMB_VFS_NEXT_LSTAT(handle, smb_fname);
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smb_fname->base_name = tmp_base_name;
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TALLOC_FREE(cappath);
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return ret;
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}
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static int cap_unlink(vfs_handle_struct *handle,
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const struct smb_filename *smb_fname)
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{
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struct smb_filename *smb_fname_tmp = NULL;
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char *cappath = NULL;
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int ret;
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cappath = capencode(talloc_tos(), smb_fname->base_name);
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if (!cappath) {
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errno = ENOMEM;
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return -1;
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}
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/* Setup temporary smb_filename structs. */
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smb_fname_tmp = cp_smb_filename(talloc_tos(), smb_fname);
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if (smb_fname_tmp == NULL) {
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errno = ENOMEM;
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return -1;
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}
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smb_fname_tmp->base_name = cappath;
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ret = SMB_VFS_NEXT_UNLINK(handle, smb_fname_tmp);
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TALLOC_FREE(smb_fname_tmp);
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return ret;
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}
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static int cap_chmod(vfs_handle_struct *handle, const char *path, mode_t mode)
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{
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char *cappath = capencode(talloc_tos(), path);
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if (!cappath) {
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errno = ENOMEM;
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return -1;
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}
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return SMB_VFS_NEXT_CHMOD(handle, cappath, mode);
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}
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static int cap_chown(vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid)
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{
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char *cappath = capencode(talloc_tos(), path);
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if (!cappath) {
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errno = ENOMEM;
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return -1;
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}
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return SMB_VFS_NEXT_CHOWN(handle, cappath, uid, gid);
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}
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static int cap_lchown(vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid)
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{
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char *cappath = capencode(talloc_tos(), path);
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if (!cappath) {
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errno = ENOMEM;
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return -1;
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}
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return SMB_VFS_NEXT_LCHOWN(handle, cappath, uid, gid);
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}
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static int cap_chdir(vfs_handle_struct *handle, const char *path)
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{
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char *cappath = capencode(talloc_tos(), path);
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if (!cappath) {
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errno = ENOMEM;
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return -1;
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}
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DEBUG(3,("cap: cap_chdir for %s\n", path));
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return SMB_VFS_NEXT_CHDIR(handle, cappath);
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}
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static int cap_ntimes(vfs_handle_struct *handle,
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const struct smb_filename *smb_fname,
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struct smb_file_time *ft)
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{
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struct smb_filename *smb_fname_tmp = NULL;
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char *cappath = NULL;
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int ret;
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cappath = capencode(talloc_tos(), smb_fname->base_name);
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if (!cappath) {
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errno = ENOMEM;
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return -1;
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}
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/* Setup temporary smb_filename structs. */
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smb_fname_tmp = cp_smb_filename(talloc_tos(), smb_fname);
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if (smb_fname_tmp == NULL) {
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errno = ENOMEM;
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return -1;
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}
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smb_fname_tmp->base_name = cappath;
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ret = SMB_VFS_NEXT_NTIMES(handle, smb_fname_tmp, ft);
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TALLOC_FREE(smb_fname_tmp);
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return ret;
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}
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static int cap_symlink(vfs_handle_struct *handle, const char *oldpath,
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const char *newpath)
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{
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char *capold = capencode(talloc_tos(), oldpath);
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char *capnew = capencode(talloc_tos(), newpath);
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if (!capold || !capnew) {
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errno = ENOMEM;
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return -1;
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}
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return SMB_VFS_NEXT_SYMLINK(handle, capold, capnew);
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}
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static int cap_readlink(vfs_handle_struct *handle, const char *path,
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char *buf, size_t bufsiz)
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{
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char *cappath = capencode(talloc_tos(), path);
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if (!cappath) {
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errno = ENOMEM;
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return -1;
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}
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return SMB_VFS_NEXT_READLINK(handle, cappath, buf, bufsiz);
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}
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static int cap_link(vfs_handle_struct *handle, const char *oldpath, const char *newpath)
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{
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char *capold = capencode(talloc_tos(), oldpath);
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char *capnew = capencode(talloc_tos(), newpath);
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if (!capold || !capnew) {
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errno = ENOMEM;
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return -1;
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}
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return SMB_VFS_NEXT_LINK(handle, capold, capnew);
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}
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static int cap_mknod(vfs_handle_struct *handle, const char *path, mode_t mode, SMB_DEV_T dev)
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{
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char *cappath = capencode(talloc_tos(), path);
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if (!cappath) {
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errno = ENOMEM;
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return -1;
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}
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return SMB_VFS_NEXT_MKNOD(handle, cappath, mode, dev);
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}
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static char *cap_realpath(vfs_handle_struct *handle, const char *path)
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{
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/* monyo need capencode'ed and capdecode'ed? */
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char *cappath = capencode(talloc_tos(), path);
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if (!cappath) {
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errno = ENOMEM;
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return NULL;
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}
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return SMB_VFS_NEXT_REALPATH(handle, cappath);
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}
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static int cap_chmod_acl(vfs_handle_struct *handle, const char *path, mode_t mode)
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{
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char *cappath = capencode(talloc_tos(), path);
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/* If the underlying VFS doesn't have ACL support... */
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if (!cappath) {
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errno = ENOMEM;
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return -1;
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}
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return SMB_VFS_NEXT_CHMOD_ACL(handle, cappath, mode);
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}
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static SMB_ACL_T cap_sys_acl_get_file(vfs_handle_struct *handle,
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const char *path, SMB_ACL_TYPE_T type,
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TALLOC_CTX *mem_ctx)
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{
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char *cappath = capencode(talloc_tos(), path);
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if (!cappath) {
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errno = ENOMEM;
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return (SMB_ACL_T)NULL;
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}
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return SMB_VFS_NEXT_SYS_ACL_GET_FILE(handle, cappath, type, mem_ctx);
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}
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static int cap_sys_acl_set_file(vfs_handle_struct *handle, const char *path, SMB_ACL_TYPE_T acltype, SMB_ACL_T theacl)
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{
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char *cappath = capencode(talloc_tos(), path);
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if (!cappath) {
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errno = ENOMEM;
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return -1;
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}
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return SMB_VFS_NEXT_SYS_ACL_SET_FILE(handle, cappath, acltype, theacl);
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}
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static int cap_sys_acl_delete_def_file(vfs_handle_struct *handle, const char *path)
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{
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char *cappath = capencode(talloc_tos(), path);
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if (!cappath) {
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errno = ENOMEM;
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return -1;
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}
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return SMB_VFS_NEXT_SYS_ACL_DELETE_DEF_FILE(handle, cappath);
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}
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static ssize_t cap_getxattr(vfs_handle_struct *handle, const char *path, const char *name, void *value, size_t size)
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{
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char *cappath = capencode(talloc_tos(), path);
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char *capname = capencode(talloc_tos(), name);
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if (!cappath || !capname) {
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errno = ENOMEM;
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return -1;
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}
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return SMB_VFS_NEXT_GETXATTR(handle, cappath, capname, value, size);
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}
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static ssize_t cap_fgetxattr(vfs_handle_struct *handle, struct files_struct *fsp, const char *path, void *value, size_t size)
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{
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char *cappath = capencode(talloc_tos(), path);
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if (!cappath) {
|
|
errno = ENOMEM;
|
|
return -1;
|
|
}
|
|
return SMB_VFS_NEXT_FGETXATTR(handle, fsp, cappath, value, size);
|
|
}
|
|
|
|
static ssize_t cap_listxattr(vfs_handle_struct *handle, const char *path, char *list, size_t size)
|
|
{
|
|
char *cappath = capencode(talloc_tos(), path);
|
|
|
|
if (!cappath) {
|
|
errno = ENOMEM;
|
|
return -1;
|
|
}
|
|
return SMB_VFS_NEXT_LISTXATTR(handle, cappath, list, size);
|
|
}
|
|
|
|
static int cap_removexattr(vfs_handle_struct *handle, const char *path, const char *name)
|
|
{
|
|
char *cappath = capencode(talloc_tos(), path);
|
|
char *capname = capencode(talloc_tos(), name);
|
|
|
|
if (!cappath || !capname) {
|
|
errno = ENOMEM;
|
|
return -1;
|
|
}
|
|
return SMB_VFS_NEXT_REMOVEXATTR(handle, cappath, capname);
|
|
}
|
|
|
|
static int cap_fremovexattr(vfs_handle_struct *handle, struct files_struct *fsp, const char *path)
|
|
{
|
|
char *cappath = capencode(talloc_tos(), path);
|
|
|
|
if (!cappath) {
|
|
errno = ENOMEM;
|
|
return -1;
|
|
}
|
|
return SMB_VFS_NEXT_FREMOVEXATTR(handle, fsp, cappath);
|
|
}
|
|
|
|
static int cap_setxattr(vfs_handle_struct *handle, const char *path, const char *name, const void *value, size_t size, int flags)
|
|
{
|
|
char *cappath = capencode(talloc_tos(), path);
|
|
char *capname = capencode(talloc_tos(), name);
|
|
|
|
if (!cappath || !capname) {
|
|
errno = ENOMEM;
|
|
return -1;
|
|
}
|
|
return SMB_VFS_NEXT_SETXATTR(handle, cappath, capname, value, size, flags);
|
|
}
|
|
|
|
static int cap_fsetxattr(vfs_handle_struct *handle, struct files_struct *fsp, const char *path, const void *value, size_t size, int flags)
|
|
{
|
|
char *cappath = capencode(talloc_tos(), path);
|
|
|
|
if (!cappath) {
|
|
errno = ENOMEM;
|
|
return -1;
|
|
}
|
|
return SMB_VFS_NEXT_FSETXATTR(handle, fsp, cappath, value, size, flags);
|
|
}
|
|
|
|
static struct vfs_fn_pointers vfs_cap_fns = {
|
|
.disk_free_fn = cap_disk_free,
|
|
.get_quota_fn = cap_get_quota,
|
|
.opendir_fn = cap_opendir,
|
|
.readdir_fn = cap_readdir,
|
|
.mkdir_fn = cap_mkdir,
|
|
.rmdir_fn = cap_rmdir,
|
|
.open_fn = cap_open,
|
|
.rename_fn = cap_rename,
|
|
.stat_fn = cap_stat,
|
|
.lstat_fn = cap_lstat,
|
|
.unlink_fn = cap_unlink,
|
|
.chmod_fn = cap_chmod,
|
|
.chown_fn = cap_chown,
|
|
.lchown_fn = cap_lchown,
|
|
.chdir_fn = cap_chdir,
|
|
.ntimes_fn = cap_ntimes,
|
|
.symlink_fn = cap_symlink,
|
|
.readlink_fn = cap_readlink,
|
|
.link_fn = cap_link,
|
|
.mknod_fn = cap_mknod,
|
|
.realpath_fn = cap_realpath,
|
|
.chmod_acl_fn = cap_chmod_acl,
|
|
.sys_acl_get_file_fn = cap_sys_acl_get_file,
|
|
.sys_acl_set_file_fn = cap_sys_acl_set_file,
|
|
.sys_acl_delete_def_file_fn = cap_sys_acl_delete_def_file,
|
|
.getxattr_fn = cap_getxattr,
|
|
.fgetxattr_fn = cap_fgetxattr,
|
|
.listxattr_fn = cap_listxattr,
|
|
.removexattr_fn = cap_removexattr,
|
|
.fremovexattr_fn = cap_fremovexattr,
|
|
.setxattr_fn = cap_setxattr,
|
|
.fsetxattr_fn = cap_fsetxattr
|
|
};
|
|
|
|
NTSTATUS vfs_cap_init(void);
|
|
NTSTATUS vfs_cap_init(void)
|
|
{
|
|
return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "cap",
|
|
&vfs_cap_fns);
|
|
}
|
|
|
|
/* 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(TALLOC_CTX *ctx, const char *from)
|
|
{
|
|
char *out = NULL;
|
|
const char *p1;
|
|
char *to = NULL;
|
|
size_t len = 0;
|
|
|
|
for (p1 = from; *p1; p1++) {
|
|
if ((unsigned char)*p1 >= 0x80) {
|
|
len += 3;
|
|
} else {
|
|
len++;
|
|
}
|
|
}
|
|
len++;
|
|
|
|
to = talloc_array(ctx, char, len);
|
|
if (!to) {
|
|
return NULL;
|
|
}
|
|
|
|
for (out = to; *from;) {
|
|
/* 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(TALLOC_CTX *ctx, const char *from)
|
|
{
|
|
const char *p1;
|
|
char *out = NULL;
|
|
char *to = NULL;
|
|
size_t len = 0;
|
|
|
|
for (p1 = from; *p1; len++) {
|
|
if (is_hex(p1)) {
|
|
p1 += 3;
|
|
} else {
|
|
p1++;
|
|
}
|
|
}
|
|
len++;
|
|
|
|
to = talloc_array(ctx, char, len);
|
|
if (!to) {
|
|
return NULL;
|
|
}
|
|
|
|
for (out = to; *from;) {
|
|
if (is_hex(from)) {
|
|
*out++ = (hex2bin(from[1])<<4) | (hex2bin(from[2]));
|
|
from += 3;
|
|
} else {
|
|
*out++ = *from++;
|
|
}
|
|
}
|
|
*out = '\0';
|
|
return to;
|
|
}
|