mirror of
https://github.com/samba-team/samba.git
synced 2024-12-24 21:34:56 +03:00
449 lines
11 KiB
C
449 lines
11 KiB
C
/*
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* AppleTalk VFS module for Samba-3.x
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*
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* Copyright (C) Alexei Kotovich, 2002
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* Copyright (C) Stefan (metze) Metzmacher, 2003
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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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#undef DBGC_CLASS
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#define DBGC_CLASS DBGC_VFS
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#define APPLEDOUBLE ".AppleDouble"
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#define ADOUBLEMODE 0777
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/* atalk functions */
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static int atalk_build_paths(TALLOC_CTX *ctx, const char *path,
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const char *fname,
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char **adbl_path, char **orig_path,
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SMB_STRUCT_STAT *adbl_info,
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SMB_STRUCT_STAT *orig_info,
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bool fake_dir_create_times);
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static int atalk_unlink_file(const char *path);
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static int atalk_get_path_ptr(char *path)
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{
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int i = 0;
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int ptr = 0;
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for (i = 0; path[i]; i ++) {
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if (path[i] == '/')
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ptr = i;
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/* get out some 'spam';) from win32's file name */
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else if (path[i] == ':') {
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path[i] = '\0';
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break;
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}
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}
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return ptr;
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}
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static int atalk_build_paths(TALLOC_CTX *ctx, const char *path,
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const char *fname,
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char **adbl_path, char **orig_path,
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SMB_STRUCT_STAT *adbl_info,
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SMB_STRUCT_STAT *orig_info,
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bool fake_dir_create_times)
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{
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int ptr0 = 0;
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int ptr1 = 0;
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char *dname = 0;
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char *name = 0;
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if (!ctx || !path || !fname || !adbl_path || !orig_path ||
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!adbl_info || !orig_info)
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return -1;
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#if 0
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DEBUG(3, ("ATALK: PATH: %s[%s]\n", path, fname));
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#endif
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if (strstr(path, APPLEDOUBLE) || strstr(fname, APPLEDOUBLE)) {
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DEBUG(3, ("ATALK: path %s[%s] already contains %s\n", path, fname, APPLEDOUBLE));
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return -1;
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}
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if (fname[0] == '.') ptr0 ++;
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if (fname[1] == '/') ptr0 ++;
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*orig_path = talloc_asprintf(ctx, "%s/%s", path, &fname[ptr0]);
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/* get pointer to last '/' */
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ptr1 = atalk_get_path_ptr(*orig_path);
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sys_lstat(*orig_path, orig_info, fake_dir_create_times);
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if (S_ISDIR(orig_info->st_ex_mode)) {
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*adbl_path = talloc_asprintf(ctx, "%s/%s/%s/",
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path, &fname[ptr0], APPLEDOUBLE);
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} else {
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dname = talloc_strdup(ctx, *orig_path);
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dname[ptr1] = '\0';
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name = *orig_path;
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*adbl_path = talloc_asprintf(ctx, "%s/%s/%s",
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dname, APPLEDOUBLE, &name[ptr1 + 1]);
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}
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#if 0
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DEBUG(3, ("ATALK: DEBUG:\n%s\n%s\n", *orig_path, *adbl_path));
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#endif
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sys_lstat(*adbl_path, adbl_info, fake_dir_create_times);
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return 0;
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}
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static int atalk_unlink_file(const char *path)
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{
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int ret = 0;
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become_root();
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ret = unlink(path);
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unbecome_root();
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return ret;
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}
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static void atalk_add_to_list(name_compare_entry **list)
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{
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int i, count = 0;
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name_compare_entry *new_list = 0;
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name_compare_entry *cur_list = 0;
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cur_list = *list;
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if (cur_list) {
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for (i = 0, count = 0; cur_list[i].name; i ++, count ++) {
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if (strstr(cur_list[i].name, APPLEDOUBLE))
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return;
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}
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}
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if (!(new_list = SMB_CALLOC_ARRAY(name_compare_entry, count + 2)))
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return;
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for (i = 0; i < count; i ++) {
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new_list[i].name = SMB_STRDUP(cur_list[i].name);
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new_list[i].is_wild = cur_list[i].is_wild;
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}
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new_list[i].name = SMB_STRDUP(APPLEDOUBLE);
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new_list[i].is_wild = False;
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free_namearray(*list);
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*list = new_list;
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new_list = 0;
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cur_list = 0;
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}
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static void atalk_rrmdir(TALLOC_CTX *ctx, char *path)
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{
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char *dpath;
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SMB_STRUCT_DIRENT *dent = 0;
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SMB_STRUCT_DIR *dir;
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if (!path) return;
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dir = sys_opendir(path);
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if (!dir) return;
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while (NULL != (dent = sys_readdir(dir))) {
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if (strcmp(dent->d_name, ".") == 0 ||
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strcmp(dent->d_name, "..") == 0)
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continue;
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if (!(dpath = talloc_asprintf(ctx, "%s/%s",
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path, dent->d_name)))
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continue;
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atalk_unlink_file(dpath);
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}
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sys_closedir(dir);
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}
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/* Disk operations */
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/* Directory operations */
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static SMB_STRUCT_DIR *atalk_opendir(struct vfs_handle_struct *handle, const char *fname, const char *mask, uint32 attr)
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{
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SMB_STRUCT_DIR *ret = 0;
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ret = SMB_VFS_NEXT_OPENDIR(handle, fname, mask, attr);
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/*
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* when we try to perform delete operation upon file which has fork
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* in ./.AppleDouble and this directory wasn't hidden by Samba,
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* MS Windows explorer causes the error: "Cannot find the specified file"
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* There is some workaround to avoid this situation, i.e. if
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* connection has not .AppleDouble entry in either veto or hide
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* list then it would be nice to add one.
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*/
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atalk_add_to_list(&handle->conn->hide_list);
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atalk_add_to_list(&handle->conn->veto_list);
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return ret;
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}
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static int atalk_rmdir(struct vfs_handle_struct *handle, const char *path)
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{
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bool add = False;
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TALLOC_CTX *ctx = 0;
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char *dpath;
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if (!handle->conn->origpath || !path) goto exit_rmdir;
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/* due to there is no way to change bDeleteVetoFiles variable
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* from this module, gotta use talloc stuff..
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*/
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strstr(path, APPLEDOUBLE) ? (add = False) : (add = True);
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if (!(ctx = talloc_init("remove_directory")))
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goto exit_rmdir;
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if (!(dpath = talloc_asprintf(ctx, "%s/%s%s",
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handle->conn->origpath, path, add ? "/"APPLEDOUBLE : "")))
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goto exit_rmdir;
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atalk_rrmdir(ctx, dpath);
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exit_rmdir:
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talloc_destroy(ctx);
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return SMB_VFS_NEXT_RMDIR(handle, path);
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}
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/* File operations */
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static int atalk_rename(struct 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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int ret = 0;
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char *oldname = NULL;
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char *adbl_path = NULL;
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char *orig_path = NULL;
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SMB_STRUCT_STAT adbl_info;
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SMB_STRUCT_STAT orig_info;
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NTSTATUS status;
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ret = SMB_VFS_NEXT_RENAME(handle, smb_fname_src, smb_fname_dst);
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status = get_full_smb_filename(talloc_tos(), smb_fname_src, &oldname);
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if (!NT_STATUS_IS_OK(status)) {
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return ret;
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}
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if (atalk_build_paths(talloc_tos(), handle->conn->origpath, oldname,
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&adbl_path, &orig_path, &adbl_info,
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&orig_info, false) != 0)
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goto exit_rename;
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if (S_ISDIR(orig_info.st_ex_mode) || S_ISREG(orig_info.st_ex_mode)) {
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DEBUG(3, ("ATALK: %s has passed..\n", adbl_path));
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goto exit_rename;
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}
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atalk_unlink_file(adbl_path);
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exit_rename:
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TALLOC_FREE(oldname);
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TALLOC_FREE(adbl_path);
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TALLOC_FREE(orig_path);
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return ret;
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}
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static int atalk_unlink(struct vfs_handle_struct *handle,
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const struct smb_filename *smb_fname)
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{
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int ret = 0, i;
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char *path = NULL;
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char *adbl_path = NULL;
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char *orig_path = NULL;
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SMB_STRUCT_STAT adbl_info;
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SMB_STRUCT_STAT orig_info;
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NTSTATUS status;
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ret = SMB_VFS_NEXT_UNLINK(handle, smb_fname);
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status = get_full_smb_filename(talloc_tos(), smb_fname, &path);
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if (!NT_STATUS_IS_OK(status)) {
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return ret;
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}
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/* no .AppleDouble sync if veto or hide list is empty,
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* otherwise "Cannot find the specified file" error will be caused
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*/
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if (!handle->conn->veto_list) return ret;
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if (!handle->conn->hide_list) return ret;
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for (i = 0; handle->conn->veto_list[i].name; i ++) {
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if (strstr(handle->conn->veto_list[i].name, APPLEDOUBLE))
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break;
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}
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if (!handle->conn->veto_list[i].name) {
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for (i = 0; handle->conn->hide_list[i].name; i ++) {
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if (strstr(handle->conn->hide_list[i].name, APPLEDOUBLE))
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break;
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else {
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DEBUG(3, ("ATALK: %s is not hidden, skipped..\n",
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APPLEDOUBLE));
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goto exit_unlink;
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}
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}
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}
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if (atalk_build_paths(talloc_tos(), handle->conn->origpath, path,
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&adbl_path, &orig_path,
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&adbl_info, &orig_info, false) != 0)
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goto exit_unlink;
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if (S_ISDIR(orig_info.st_ex_mode) || S_ISREG(orig_info.st_ex_mode)) {
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DEBUG(3, ("ATALK: %s has passed..\n", adbl_path));
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goto exit_unlink;
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}
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atalk_unlink_file(adbl_path);
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exit_unlink:
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TALLOC_FREE(path);
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TALLOC_FREE(adbl_path);
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TALLOC_FREE(orig_path);
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return ret;
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}
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static int atalk_chmod(struct vfs_handle_struct *handle, const char *path, mode_t mode)
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{
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int ret = 0;
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char *adbl_path = 0;
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char *orig_path = 0;
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SMB_STRUCT_STAT adbl_info;
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SMB_STRUCT_STAT orig_info;
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TALLOC_CTX *ctx;
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ret = SMB_VFS_NEXT_CHMOD(handle, path, mode);
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if (!path) return ret;
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if (!(ctx = talloc_init("chmod_file")))
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return ret;
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if (atalk_build_paths(ctx, handle->conn->origpath, path, &adbl_path,
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&orig_path, &adbl_info, &orig_info,
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false) != 0)
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goto exit_chmod;
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if (!S_ISDIR(orig_info.st_ex_mode) && !S_ISREG(orig_info.st_ex_mode)) {
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DEBUG(3, ("ATALK: %s has passed..\n", orig_path));
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goto exit_chmod;
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}
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chmod(adbl_path, ADOUBLEMODE);
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exit_chmod:
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talloc_destroy(ctx);
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return ret;
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}
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static int atalk_chown(struct vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid)
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{
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int ret = 0;
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char *adbl_path = 0;
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char *orig_path = 0;
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SMB_STRUCT_STAT adbl_info;
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SMB_STRUCT_STAT orig_info;
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TALLOC_CTX *ctx;
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ret = SMB_VFS_NEXT_CHOWN(handle, path, uid, gid);
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if (!path) return ret;
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if (!(ctx = talloc_init("chown_file")))
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return ret;
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if (atalk_build_paths(ctx, handle->conn->origpath, path,
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&adbl_path, &orig_path,
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&adbl_info, &orig_info, false) != 0)
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goto exit_chown;
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if (!S_ISDIR(orig_info.st_ex_mode) && !S_ISREG(orig_info.st_ex_mode)) {
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DEBUG(3, ("ATALK: %s has passed..\n", orig_path));
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goto exit_chown;
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}
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if (chown(adbl_path, uid, gid) == -1) {
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DEBUG(3, ("ATALK: chown error %s\n", strerror(errno)));
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}
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exit_chown:
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talloc_destroy(ctx);
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return ret;
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}
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static int atalk_lchown(struct vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid)
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{
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int ret = 0;
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char *adbl_path = 0;
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char *orig_path = 0;
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SMB_STRUCT_STAT adbl_info;
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SMB_STRUCT_STAT orig_info;
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TALLOC_CTX *ctx;
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ret = SMB_VFS_NEXT_CHOWN(handle, path, uid, gid);
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if (!path) return ret;
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if (!(ctx = talloc_init("lchown_file")))
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return ret;
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if (atalk_build_paths(ctx, handle->conn->origpath, path,
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&adbl_path, &orig_path,
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&adbl_info, &orig_info, false) != 0)
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goto exit_lchown;
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if (!S_ISDIR(orig_info.st_ex_mode) && !S_ISREG(orig_info.st_ex_mode)) {
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DEBUG(3, ("ATALK: %s has passed..\n", orig_path));
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goto exit_lchown;
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}
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if (lchown(adbl_path, uid, gid) == -1) {
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DEBUG(3, ("ATALK: lchown error %s\n", strerror(errno)));
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}
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exit_lchown:
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talloc_destroy(ctx);
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return ret;
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}
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static struct vfs_fn_pointers vfs_netatalk_fns = {
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.opendir = atalk_opendir,
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.rmdir = atalk_rmdir,
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.rename = atalk_rename,
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.unlink = atalk_unlink,
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.chmod = atalk_chmod,
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.chown = atalk_chown,
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.lchown = atalk_lchown,
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};
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NTSTATUS vfs_netatalk_init(void);
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NTSTATUS vfs_netatalk_init(void)
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{
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return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "netatalk",
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&vfs_netatalk_fns);
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}
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