mirror of
https://github.com/samba-team/samba.git
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381 lines
9.4 KiB
C
381 lines
9.4 KiB
C
/*
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* Catia VFS module
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*
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* Implement a fixed mapping of forbidden NT characters in filenames that are
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* used a lot by the CAD package Catia.
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*
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* Yes, this a BAD BAD UGLY INCOMPLETE hack, but it helps quite some people
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* out there. Catia V4 on AIX uses characters like "<*$ a *lot*, all forbidden
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* under Windows...
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*
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* Copyright (C) Volker Lendecke, 2005
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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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static char *catia_string_replace(TALLOC_CTX *ctx,
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const char *s,
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unsigned char oldc,
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unsigned char newc)
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{
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smb_ucs2_t *tmpbuf = NULL;
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smb_ucs2_t *ptr = NULL;
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smb_ucs2_t old = oldc;
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char *ret = NULL;
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size_t converted_size;
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if (!s) {
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return NULL;
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}
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if (!push_ucs2_talloc(ctx, &tmpbuf, s, &converted_size)) {
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return NULL;
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}
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ptr = tmpbuf;
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for (;*ptr;ptr++) {
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if (*ptr==old) {
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*ptr=newc;
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}
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}
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if (!pull_ucs2_talloc(ctx, &ret, tmpbuf, &converted_size)) {
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TALLOC_FREE(tmpbuf);
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return NULL;
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}
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TALLOC_FREE(tmpbuf);
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return ret;
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}
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static char *from_unix(TALLOC_CTX *ctx, const char *s)
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{
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char *ret = catia_string_replace(ctx, s, '\x22', '\xa8');
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ret = catia_string_replace(ctx, ret, '\x2a', '\xa4');
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ret = catia_string_replace(ctx, ret, '\x2f', '\xf8');
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ret = catia_string_replace(ctx, ret, '\x3a', '\xf7');
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ret = catia_string_replace(ctx, ret, '\x3c', '\xab');
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ret = catia_string_replace(ctx, ret, '\x3e', '\xbb');
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ret = catia_string_replace(ctx, ret, '\x3f', '\xbf');
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ret = catia_string_replace(ctx, ret, '\x5c', '\xff');
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ret = catia_string_replace(ctx, ret, '\x7c', '\xa6');
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return catia_string_replace(ctx, ret, ' ', '\xb1');
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}
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static char *to_unix(TALLOC_CTX *ctx, const char *s)
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{
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char *ret = catia_string_replace(ctx, s, '\xa8', '\x22');
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ret = catia_string_replace(ctx, ret, '\xa4', '\x2a');
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ret = catia_string_replace(ctx, ret, '\xf8', '\x2f');
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ret = catia_string_replace(ctx, ret, '\xf7', '\x3a');
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ret = catia_string_replace(ctx, ret, '\xab', '\x3c');
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ret = catia_string_replace(ctx, ret, '\xbb', '\x3e');
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ret = catia_string_replace(ctx, ret, '\xbf', '\x3f');
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ret = catia_string_replace(ctx, ret, '\xff', '\x5c');
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ret = catia_string_replace(ctx, ret, '\xa6', '\x7c');
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return catia_string_replace(ctx, ret, '\xb1', ' ');
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}
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static SMB_STRUCT_DIR *catia_opendir(vfs_handle_struct *handle,
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const char *fname, const char *mask, uint32 attr)
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{
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char *name = to_unix(talloc_tos(), fname);
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if (!name) {
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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, name, mask, attr);
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}
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static SMB_STRUCT_DIRENT *catia_readdir(vfs_handle_struct *handle,
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SMB_STRUCT_DIR *dirp)
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{
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SMB_STRUCT_DIRENT *result = NULL;
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SMB_STRUCT_DIRENT *newdirent = NULL;
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char *newname;
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size_t newnamelen;
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result = SMB_VFS_NEXT_READDIR(handle, dirp, NULL);
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if (result == NULL) {
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return result;
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}
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newname = from_unix(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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newnamelen = strlen(newname)+1;
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newdirent = (SMB_STRUCT_DIRENT *)TALLOC_ARRAY(talloc_tos(),
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char,
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sizeof(SMB_STRUCT_DIRENT)+
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newnamelen);
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if (!newdirent) {
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return NULL;
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}
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memcpy(newdirent, result, sizeof(SMB_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 catia_open(vfs_handle_struct *handle,
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struct smb_filename *smb_fname,
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files_struct *fsp,
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int flags,
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mode_t mode)
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{
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char *name;
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char *tmp_base_name;
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int ret;
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name = to_unix(talloc_tos(), smb_fname->base_name);
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if (!name) {
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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 = name;
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ret = SMB_VFS_NEXT_OPEN(handle, name, fsp, flags, mode);
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smb_fname->base_name = tmp_base_name;
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TALLOC_FREE(name);
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return ret;
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}
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static int catia_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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TALLOC_CTX *ctx = talloc_tos();
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char *oname = NULL;
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char *nname = 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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NTSTATUS status;
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int ret = -1;
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oname = to_unix(ctx, smb_fname_src->base_name);
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nname = to_unix(ctx, smb_fname_dst->base_name);
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if (!oname || !nname) {
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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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status = copy_smb_filename(talloc_tos(), smb_fname_src,
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&smb_fname_src_tmp);
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if (!NT_STATUS_IS_OK(status)) {
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errno = map_errno_from_nt_status(status);
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goto out;
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}
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status = copy_smb_filename(talloc_tos(), smb_fname_dst,
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&smb_fname_dst_tmp);
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if (!NT_STATUS_IS_OK(status)) {
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errno = map_errno_from_nt_status(status);
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goto out;
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}
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smb_fname_src_tmp->base_name = oname;
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smb_fname_dst_tmp->base_name = nname;
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DEBUG(10, ("converted old name: %s\n",
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smb_fname_str_dbg(smb_fname_src_tmp)));
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DEBUG(10, ("converted new name: %s\n",
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smb_fname_str_dbg(smb_fname_dst_tmp)));
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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(oname);
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TALLOC_FREE(newname);
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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 catia_stat(vfs_handle_struct *handle,
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struct smb_filename *smb_fname)
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{
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char *name;
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char *tmp_base_name;
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int ret;
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name = to_unix(talloc_tos(), smb_fname->base_name);
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if (!name) {
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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 = name;
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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(name);
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return ret;
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}
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static int catia_lstat(vfs_handle_struct *handle,
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struct smb_filename *smb_fname)
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{
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char *name;
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char *tmp_base_name;
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int ret;
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name = to_unix(talloc_tos(), smb_fname->base_name);
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if (!name) {
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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 = name;
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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(name);
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return ret;
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}
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static int catia_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 *name = NULL;
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NTSTATUS status;
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int ret;
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name = to_unix(talloc_tos(), smb_fname->base_name);
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if (!name) {
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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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status = copy_smb_filename(talloc_tos(), smb_fname,
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&smb_fname_tmp);
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if (!NT_STATUS_IS_OK(status)) {
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errno = map_errno_from_nt_status(status);
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return -1;
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}
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smb_fname_tmp->base_name = name;
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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 catia_chmod(vfs_handle_struct *handle,
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const char *path, mode_t mode)
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{
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char *name = to_unix(talloc_tos(), path);
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if (!name) {
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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, name, mode);
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}
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static int catia_chown(vfs_handle_struct *handle,
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const char *path, uid_t uid, gid_t gid)
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{
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char *name = to_unix(talloc_tos(), path);
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if (!name) {
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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, name, uid, gid);
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}
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static int catia_lchown(vfs_handle_struct *handle,
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const char *path, uid_t uid, gid_t gid)
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{
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char *name = to_unix(talloc_tos(), path);
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if (!name) {
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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, name, uid, gid);
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}
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static int catia_chdir(vfs_handle_struct *handle,
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const char *path)
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{
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char *name = to_unix(talloc_tos(), path);
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if (!name) {
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errno = ENOMEM;
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return -1;
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}
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return SMB_VFS_NEXT_CHDIR(handle, name);
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}
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/* VFS operations structure */
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static vfs_op_tuple catia_op_tuples[] = {
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/* Directory operations */
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{SMB_VFS_OP(catia_opendir), SMB_VFS_OP_OPENDIR,
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SMB_VFS_LAYER_TRANSPARENT},
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{SMB_VFS_OP(catia_readdir), SMB_VFS_OP_READDIR,
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SMB_VFS_LAYER_TRANSPARENT},
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/* File operations */
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{SMB_VFS_OP(catia_open), SMB_VFS_OP_OPEN,
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SMB_VFS_LAYER_TRANSPARENT},
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{SMB_VFS_OP(catia_rename), SMB_VFS_OP_RENAME,
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SMB_VFS_LAYER_TRANSPARENT},
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{SMB_VFS_OP(catia_stat), SMB_VFS_OP_STAT,
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SMB_VFS_LAYER_TRANSPARENT},
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{SMB_VFS_OP(catia_lstat), SMB_VFS_OP_LSTAT,
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SMB_VFS_LAYER_TRANSPARENT},
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{SMB_VFS_OP(catia_unlink), SMB_VFS_OP_UNLINK,
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SMB_VFS_LAYER_TRANSPARENT},
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{SMB_VFS_OP(catia_chmod), SMB_VFS_OP_CHMOD,
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SMB_VFS_LAYER_TRANSPARENT},
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{SMB_VFS_OP(catia_chown), SMB_VFS_OP_CHOWN,
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SMB_VFS_LAYER_TRANSPARENT},
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{SMB_VFS_OP(catia_lchown), SMB_VFS_OP_LCHOWN,
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SMB_VFS_LAYER_TRANSPARENT},
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{SMB_VFS_OP(catia_chdir), SMB_VFS_OP_CHDIR,
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SMB_VFS_LAYER_TRANSPARENT},
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{NULL, SMB_VFS_OP_NOOP,
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SMB_VFS_LAYER_NOOP}
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};
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NTSTATUS vfs_catia_init(void);
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NTSTATUS vfs_catia_init(void)
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{
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return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "catia",
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catia_op_tuples);
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}
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