1 /* Licensed to the Apache Software Foundation (ASF) under one or more
2 * contributor license agreements. See the NOTICE file distributed with
3 * this work for additional information regarding copyright ownership.
4 * The ASF licenses this file to You under the Apache License, Version 2.0
5 * (the "License"); you may not use this file except in compliance with
6 * the License. You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
21 #include "apr_private.h"
22 #include "apr_pools.h"
23 #include "apr_general.h"
24 #include "apr_tables.h"
25 #include "apr_thread_mutex.h"
26 #include "apr_file_io.h"
27 #include "apr_file_info.h"
28 #include "apr_errno.h"
29 #include "apr_arch_misc.h"
31 #ifdef HAVE_SYS_STAT_H
34 #if APR_HAVE_SYS_TYPES_H
35 #include <sys/types.h>
37 #ifdef HAVE_SYS_FCNTL_H
50 #if APR_HAS_UNICODE_FS
51 #include "arch/win32/apr_arch_utf8.h"
54 /* Helper functions for the WinNT ApiW() functions. APR treats all
55 * resource identifiers (files, etc) by their UTF-8 name, to provide
56 * access to all named identifiers. [UTF-8 completely maps Unicode
57 * into char type strings.]
59 * The _path flavors below provide us fast mappings of the
60 * Unicode filename //?/D:/path and //?/UNC/mach/share/path mappings,
61 * which allow unlimited (well, 32000 wide character) length names.
62 * These prefixes may appear in Unicode, but must not appear in the
63 * Ascii API calls. So we tack them on in utf8_to_unicode_path, and
64 * strip them right back off in unicode_to_utf8_path.
66 apr_status_t utf8_to_unicode_path(apr_wchar_t* dststr, apr_size_t dstchars,
68 apr_status_t unicode_to_utf8_path(char* dststr, apr_size_t dstchars,
69 const apr_wchar_t* srcstr);
71 #endif /* APR_HAS_UNICODE_FS */
73 /* Another Helper functions for the WinNT ApiW() functions. We need to
74 * derive some 'resource' names (max length 255 characters, prefixed with
75 * Global/ or Local/ on WinNT) from something that looks like a filename.
76 * Since 'resource' names never contain slashes, convert these to '_'s
77 * and return the appropriate char* or wchar* for ApiA or ApiW calls.
80 void *res_name_from_filename(const char *file, int global, apr_pool_t *pool);
82 #define APR_FILE_MAX MAX_PATH
84 #define APR_FILE_BUFSIZE 4096
86 /* obscure ommissions from msvc's sys/stat.h */
88 #define S_IFIFO _S_IFIFO /* pipe */
89 #define S_IFBLK 0060000 /* Block Special */
90 #define S_IFLNK 0120000 /* Symbolic Link */
91 #define S_IFSOCK 0140000 /* Socket */
92 #define S_IFWHT 0160000 /* Whiteout */
95 /* Internal Flags for apr_file_open */
96 #define APR_OPENINFO 0x00100000 /* Open without READ or WRITE access */
97 #define APR_OPENLINK 0x00200000 /* Open a link itself, if supported */
98 #define APR_READCONTROL 0x00400000 /* Read the file's owner/perms */
99 #define APR_WRITECONTROL 0x00800000 /* Modifythe file's owner/perms */
100 #define APR_WRITEATTRS 0x01000000 /* Modify the file's attributes */
101 #define APR_STDIN_FLAG 0x02000000 /* Obtained via apr_file_open_stdin() */
102 #define APR_STDOUT_FLAG 0x04000000 /* Obtained via apr_file_open_stdout() */
103 #define APR_STDERR_FLAG 0x06000000 /* Obtained via apr_file_open_stderr() */
104 #define APR_STD_FLAGS (APR_STDIN_FLAG | APR_STDOUT_FLAG | APR_STDERR_FLAG)
106 /* Entries missing from the MSVC 5.0 Win32 SDK:
108 #ifndef FILE_ATTRIBUTE_DEVICE
109 #define FILE_ATTRIBUTE_DEVICE 0x00000040
111 #ifndef FILE_ATTRIBUTE_REPARSE_POINT
112 #define FILE_ATTRIBUTE_REPARSE_POINT 0x00000400
114 #ifndef FILE_FLAG_OPEN_NO_RECALL
115 #define FILE_FLAG_OPEN_NO_RECALL 0x00100000
117 #ifndef FILE_FLAG_OPEN_REPARSE_POINT
118 #define FILE_FLAG_OPEN_REPARSE_POINT 0x00200000
120 #ifndef TRUSTEE_IS_WELL_KNOWN_GROUP
121 #define TRUSTEE_IS_WELL_KNOWN_GROUP 5
124 /* Information bits available from the WIN32 FindFirstFile function */
125 #define APR_FINFO_WIN32_DIR (APR_FINFO_NAME | APR_FINFO_TYPE \
126 | APR_FINFO_CTIME | APR_FINFO_ATIME \
127 | APR_FINFO_MTIME | APR_FINFO_SIZE)
129 /* Sneak the Readonly bit through finfo->protection for internal use _only_ */
130 #define APR_FREADONLY 0x10000000
132 /* Private function for apr_stat/lstat/getfileinfo/dir_read */
133 int fillin_fileinfo(apr_finfo_t *finfo, WIN32_FILE_ATTRIBUTE_DATA *wininfo,
134 int byhandle, apr_int32_t wanted);
136 /* Private function that extends apr_stat/lstat/getfileinfo/dir_read */
137 apr_status_t more_finfo(apr_finfo_t *finfo, const void *ufile,
138 apr_int32_t wanted, int whatfile);
140 /* whatfile types for the ufile arg */
141 #define MORE_OF_HANDLE 0
142 #define MORE_OF_FSPEC 1
143 #define MORE_OF_WFSPEC 2
145 /* quick run-down of fields in windows' apr_file_t structure that may have
147 * fname -- the filename as passed to the open call.
148 * dwFileAttricutes -- Attributes used to open the file.
149 * append -- Windows doesn't support the append concept when opening files.
150 * APR needs to keep track of this, and always make sure we append
151 * correctly when writing to a file with this flag set TRUE.
155 #define filedes filehand
160 BOOLEAN pipe; // Is this a pipe of a file?
161 OVERLAPPED *pOverlapped;
162 apr_interval_time_t timeout;
165 /* File specific info */
168 DWORD dwFileAttributes;
170 BOOLEAN buffered; // Use buffered I/O?
171 int ungetchar; // Last char provided by an unget op. (-1 = no char)
174 /* Stuff for buffered mode */
176 apr_size_t bufpos; // Read/Write position in buffer
177 apr_size_t dataRead; // amount of valid data read into buffer
178 int direction; // buffer being used for 0 = read, 1 = write
179 apr_off_t filePtr; // position in file of handle
180 apr_thread_mutex_t *mutex; // mutex semaphore, must be owned to access the above fields
182 /* Pipe specific info */
192 #if APR_HAS_UNICODE_FS
194 WIN32_FIND_DATAW *entry;
199 WIN32_FIND_DATAA *entry;
206 /* There are many goofy characters the filesystem can't accept
207 * or can confound the cmd.exe shell. Here's the list
208 * [declared in filesys.c]
210 extern const char apr_c_is_fnchar[256];
212 #define IS_FNCHAR(c) (apr_c_is_fnchar[(unsigned char)(c)] & 1)
213 #define IS_SHCHAR(c) ((apr_c_is_fnchar[(unsigned char)(c)] & 2) == 2)
216 /* If the user passes APR_FILEPATH_TRUENAME to either
217 * apr_filepath_root or apr_filepath_merge, this fn determines
218 * that the root really exists. It's expensive, wouldn't want
219 * to do this too frequenly.
221 apr_status_t filepath_root_test(char *path, apr_pool_t *p);
224 /* The apr_filepath_merge wants to canonicalize the cwd to the
225 * addpath if the user passes NULL as the old root path (this
226 * isn't true of an empty string "", which won't be concatenated.
228 * But we need to figure out what the cwd of a given volume is,
229 * when the user passes D:foo. This fn will determine D:'s cwd.
231 * If flags includes the bit APR_FILEPATH_NATIVE, the path returned
232 * is in the os-native format.
234 apr_status_t filepath_drive_get(char **rootpath, char drive,
235 apr_int32_t flags, apr_pool_t *p);
238 /* If the user passes d: vs. D: (or //mach/share vs. //MACH/SHARE),
239 * we need to fold the case to canonical form. This function is
242 apr_status_t filepath_root_case(char **rootpath, char *root, apr_pool_t *p);
245 apr_status_t file_cleanup(void *);
248 * Internal function to create a Win32/NT pipe that respects some async
250 * @param in new read end of the created pipe
251 * @param out new write end of the created pipe
252 * @param blocking_mode one of
259 * @remark It so happens that APR_FULL_BLOCK and APR_FULL_NONBLOCK
260 * are common to apr_procattr_io_set() in, out and err modes.
261 * Because APR_CHILD_BLOCK and APR_WRITE_BLOCK share the same value,
262 * as do APR_PARENT_BLOCK and APR_READ_BLOCK, it's possible to use
263 * that value directly for creating the stdout/stderr pipes. When
264 * creating the stdin pipe, the values must be transposed.
265 * @see apr_procattr_io_set
267 apr_status_t apr_create_nt_pipe(apr_file_t **in, apr_file_t **out,
268 apr_int32_t blocking_mode,
271 /** @see apr_create_nt_pipe */
272 #define APR_READ_BLOCK 3
273 /** @see apr_create_nt_pipe */
274 #define APR_WRITE_BLOCK 4
276 #endif /* ! FILE_IO_H */