diff options
Diffstat (limited to 'minzip/DirUtil.c')
| -rw-r--r-- | minzip/DirUtil.c | 280 |
1 files changed, 0 insertions, 280 deletions
diff --git a/minzip/DirUtil.c b/minzip/DirUtil.c deleted file mode 100644 index 20c89cd6f..000000000 --- a/minzip/DirUtil.c +++ /dev/null @@ -1,280 +0,0 @@ -/* - * Copyright (C) 2007 The Android Open Source Project - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#include <stdlib.h> -#include <string.h> -#include <stdio.h> -#include <sys/types.h> -#include <sys/stat.h> -#include <unistd.h> -#include <errno.h> -#include <dirent.h> -#include <limits.h> - -#include "DirUtil.h" - -typedef enum { DMISSING, DDIR, DILLEGAL } DirStatus; - -static DirStatus -getPathDirStatus(const char *path) -{ - struct stat st; - int err; - - err = stat(path, &st); - if (err == 0) { - /* Something's there; make sure it's a directory. - */ - if (S_ISDIR(st.st_mode)) { - return DDIR; - } - errno = ENOTDIR; - return DILLEGAL; - } else if (errno != ENOENT) { - /* Something went wrong, or something in the path - * is bad. Can't do anything in this situation. - */ - return DILLEGAL; - } - return DMISSING; -} - -int -dirCreateHierarchy(const char *path, int mode, - const struct utimbuf *timestamp, bool stripFileName) -{ - DirStatus ds; - - /* Check for an empty string before we bother - * making any syscalls. - */ - if (path[0] == '\0') { - errno = ENOENT; - return -1; - } - - /* Allocate a path that we can modify; stick a slash on - * the end to make things easier. - */ - size_t pathLen = strlen(path); - char *cpath = (char *)malloc(pathLen + 2); - if (cpath == NULL) { - errno = ENOMEM; - return -1; - } - memcpy(cpath, path, pathLen); - if (stripFileName) { - /* Strip everything after the last slash. - */ - char *c = cpath + pathLen - 1; - while (c != cpath && *c != '/') { - c--; - } - if (c == cpath) { -//xxx test this path - /* No directory component. Act like the path was empty. - */ - errno = ENOENT; - free(cpath); - return -1; - } - c[1] = '\0'; // Terminate after the slash we found. - } else { - /* Make sure that the path ends in a slash. - */ - cpath[pathLen] = '/'; - cpath[pathLen + 1] = '\0'; - } - - /* See if it already exists. - */ - ds = getPathDirStatus(cpath); - if (ds == DDIR) { - return 0; - } else if (ds == DILLEGAL) { - return -1; - } - - /* Walk up the path from the root and make each level. - * If a directory already exists, no big deal. - */ - char *p = cpath; - while (*p != '\0') { - /* Skip any slashes, watching out for the end of the string. - */ - while (*p != '\0' && *p == '/') { - p++; - } - if (*p == '\0') { - break; - } - - /* Find the end of the next path component. - * We know that we'll see a slash before the NUL, - * because we added it, above. - */ - while (*p != '/') { - p++; - } - *p = '\0'; - - /* Check this part of the path and make a new directory - * if necessary. - */ - ds = getPathDirStatus(cpath); - if (ds == DILLEGAL) { - /* Could happen if some other process/thread is - * messing with the filesystem. - */ - free(cpath); - return -1; - } else if (ds == DMISSING) { - int err; - - err = mkdir(cpath, mode); - if (err != 0) { - free(cpath); - return -1; - } - if (timestamp != NULL && utime(cpath, timestamp)) { - free(cpath); - return -1; - } - } - // else, this directory already exists. - - /* Repair the path and continue. - */ - *p = '/'; - } - free(cpath); - - return 0; -} - -int -dirUnlinkHierarchy(const char *path) -{ - struct stat st; - DIR *dir; - struct dirent *de; - int fail = 0; - - /* is it a file or directory? */ - if (lstat(path, &st) < 0) { - return -1; - } - - /* a file, so unlink it */ - if (!S_ISDIR(st.st_mode)) { - return unlink(path); - } - - /* a directory, so open handle */ - dir = opendir(path); - if (dir == NULL) { - return -1; - } - - /* recurse over components */ - errno = 0; - while ((de = readdir(dir)) != NULL) { -//TODO: don't blow the stack - char dn[PATH_MAX]; - if (!strcmp(de->d_name, "..") || !strcmp(de->d_name, ".")) { - continue; - } - snprintf(dn, sizeof(dn), "%s/%s", path, de->d_name); - if (dirUnlinkHierarchy(dn) < 0) { - fail = 1; - break; - } - errno = 0; - } - /* in case readdir or unlink_recursive failed */ - if (fail || errno < 0) { - int save = errno; - closedir(dir); - errno = save; - return -1; - } - - /* close directory handle */ - if (closedir(dir) < 0) { - return -1; - } - - /* delete target directory */ - return rmdir(path); -} - -int -dirSetHierarchyPermissions(const char *path, - int uid, int gid, int dirMode, int fileMode) -{ - struct stat st; - if (lstat(path, &st)) { - return -1; - } - - /* ignore symlinks */ - if (S_ISLNK(st.st_mode)) { - return 0; - } - - /* directories and files get different permissions */ - if (chown(path, uid, gid) || - chmod(path, S_ISDIR(st.st_mode) ? dirMode : fileMode)) { - return -1; - } - - /* recurse over directory components */ - if (S_ISDIR(st.st_mode)) { - DIR *dir = opendir(path); - if (dir == NULL) { - return -1; - } - - errno = 0; - const struct dirent *de; - while (errno == 0 && (de = readdir(dir)) != NULL) { - if (!strcmp(de->d_name, "..") || !strcmp(de->d_name, ".")) { - continue; - } - - char dn[PATH_MAX]; - snprintf(dn, sizeof(dn), "%s/%s", path, de->d_name); - if (!dirSetHierarchyPermissions(dn, uid, gid, dirMode, fileMode)) { - errno = 0; - } else if (errno == 0) { - errno = -1; - } - } - - if (errno != 0) { - int save = errno; - closedir(dir); - errno = save; - return -1; - } - - if (closedir(dir)) { - return -1; - } - } - - return 0; -} |