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/* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 "apr_arch_file_io.h"
#include "apr_file_io.h"
#include "apr_general.h"
#include "apr_strings.h"
#include <string.h>
#include "apr_arch_inherit.h"
#include <io.h> /* for [_open/_get]_osfhandle */
APR_DECLARE(apr_status_t) apr_file_dup(apr_file_t **new_file,
apr_file_t *old_file, apr_pool_t *p)
{
#ifdef _WIN32_WCE
return APR_ENOTIMPL;
#else
HANDLE hproc = GetCurrentProcess();
HANDLE newhand = NULL;
if (!DuplicateHandle(hproc, old_file->filehand,
hproc, &newhand, 0, FALSE,
DUPLICATE_SAME_ACCESS)) {
return apr_get_os_error();
}
(*new_file) = (apr_file_t *) apr_pcalloc(p, sizeof(apr_file_t));
(*new_file)->filehand = newhand;
(*new_file)->flags = old_file->flags & ~(APR_STD_FLAGS | APR_INHERIT);
(*new_file)->pool = p;
(*new_file)->fname = apr_pstrdup(p, old_file->fname);
(*new_file)->append = old_file->append;
(*new_file)->buffered = FALSE;
(*new_file)->ungetchar = old_file->ungetchar;
#if APR_HAS_THREADS
if (old_file->mutex) {
apr_thread_mutex_create(&((*new_file)->mutex),
APR_THREAD_MUTEX_DEFAULT, p);
}
#endif
apr_pool_cleanup_register((*new_file)->pool, (void *)(*new_file), file_cleanup,
apr_pool_cleanup_null);
/* Create a pollset with room for one descriptor. */
/* ### check return codes */
(void) apr_pollset_create(&(*new_file)->pollset, 1, p, 0);
return APR_SUCCESS;
#endif /* !defined(_WIN32_WCE) */
}
APR_DECLARE(apr_status_t) apr_file_dup2(apr_file_t *new_file,
apr_file_t *old_file, apr_pool_t *p)
{
#ifdef _WIN32_WCE
return APR_ENOTIMPL;
#else
HANDLE hproc = GetCurrentProcess();
HANDLE newhand = NULL;
apr_int32_t newflags;
int fd;
if (new_file->flags & APR_STD_FLAGS)
{
if ((new_file->flags & APR_STD_FLAGS) == APR_STDERR_FLAG)
{
/* Flush stderr and unset its buffer, then commit the fd-based buffer.
* This is typically a noop for Win2K/XP since services with NULL std
* handles [but valid FILE *'s, oddly enough], but is required
* for NT 4.0 and to use this code outside of services.
*/
fflush(stderr);
setvbuf(stderr, NULL, _IONBF, 0);
_commit(2 /* stderr */);
/* Clone a handle can _close() without harming the source handle,
* open an MSVCRT-based pseudo-fd for the file handle, then dup2
* and close our temporary pseudo-fd once it's been duplicated.
* This will incidently keep the FILE-based stderr in sync.
* Note the apparently redundant _O_BINARY coersions are required.
* Note the _dup2 will close the previous std Win32 handle.
*/
if (!DuplicateHandle(hproc, old_file->filehand, hproc, &newhand,
0, FALSE, DUPLICATE_SAME_ACCESS)) {
return apr_get_os_error();
}
fd = _open_osfhandle((INT_PTR)newhand, _O_WRONLY | _O_BINARY);
_dup2(fd, 2);
_close(fd);
_setmode(2, _O_BINARY);
/* hPipeWrite was _close()'ed above, and _dup2()'ed
* to fd 2 creating a new, inherited Win32 handle.
* Recover that real handle from fd 2. Note that
* SetStdHandle(STD_ERROR_HANDLE, _get_osfhandle(2))
* is implicit in the dup2() call above
*/
newhand = (HANDLE)_get_osfhandle(2);
}
else if ((new_file->flags & APR_STD_FLAGS) == APR_STDOUT_FLAG) {
/* For the process flow see the stderr case above */
fflush(stdout);
setvbuf(stdout, NULL, _IONBF, 0);
_commit(1 /* stdout */);
if (!DuplicateHandle(hproc, old_file->filehand, hproc, &newhand,
0, FALSE, DUPLICATE_SAME_ACCESS)) {
return apr_get_os_error();
}
fd = _open_osfhandle((INT_PTR)newhand, _O_WRONLY | _O_BINARY);
_dup2(fd, 1);
_close(fd);
_setmode(1, _O_BINARY);
newhand = (HANDLE)_get_osfhandle(1);
}
else if ((new_file->flags & APR_STD_FLAGS) == APR_STDIN_FLAG) {
/* For the process flow see the stderr case above */
fflush(stdin);
setvbuf(stdin, NULL, _IONBF, 0);
_commit(0 /* stdin */);
if (!DuplicateHandle(hproc, old_file->filehand, hproc, &newhand,
0, FALSE, DUPLICATE_SAME_ACCESS)) {
return apr_get_os_error();
}
fd = _open_osfhandle((INT_PTR)newhand, _O_RDONLY | _O_BINARY);
_dup2(fd, 0);
_close(fd);
_setmode(0, _O_BINARY);
newhand = (HANDLE)_get_osfhandle(0);
}
newflags = (new_file->flags & APR_STD_FLAGS)
| (old_file->flags & ~APR_STD_FLAGS) | APR_INHERIT;
/* No need to close the old file, _dup2() above did that for us */
}
else {
if (!DuplicateHandle(hproc, old_file->filehand,
hproc, &newhand, 0,
FALSE, DUPLICATE_SAME_ACCESS)) {
return apr_get_os_error();
}
newflags = old_file->flags & ~(APR_STD_FLAGS | APR_INHERIT);
if (new_file->filehand
&& (new_file->filehand != INVALID_HANDLE_VALUE)) {
CloseHandle(new_file->filehand);
}
}
new_file->flags = newflags;
new_file->filehand = newhand;
new_file->fname = apr_pstrdup(new_file->pool, old_file->fname);
new_file->append = old_file->append;
new_file->buffered = FALSE;
new_file->ungetchar = old_file->ungetchar;
#if APR_HAS_THREADS
if (old_file->mutex) {
apr_thread_mutex_create(&(new_file->mutex),
APR_THREAD_MUTEX_DEFAULT, p);
}
#endif
return APR_SUCCESS;
#endif /* !defined(_WIN32_WCE) */
}
APR_DECLARE(apr_status_t) apr_file_setaside(apr_file_t **new_file,
apr_file_t *old_file,
apr_pool_t *p)
{
*new_file = (apr_file_t *)apr_palloc(p, sizeof(apr_file_t));
memcpy(*new_file, old_file, sizeof(apr_file_t));
(*new_file)->pool = p;
if (old_file->buffered) {
(*new_file)->buffer = apr_palloc(p, old_file->bufsize);
(*new_file)->bufsize = old_file->bufsize;
if (old_file->direction == 1) {
memcpy((*new_file)->buffer, old_file->buffer, old_file->bufpos);
}
else {
memcpy((*new_file)->buffer, old_file->buffer, old_file->dataRead);
}
}
if (old_file->mutex) {
apr_thread_mutex_create(&((*new_file)->mutex),
APR_THREAD_MUTEX_DEFAULT, p);
apr_thread_mutex_destroy(old_file->mutex);
}
if (old_file->fname) {
(*new_file)->fname = apr_pstrdup(p, old_file->fname);
}
if (!(old_file->flags & APR_FOPEN_NOCLEANUP)) {
apr_pool_cleanup_register(p, (void *)(*new_file),
file_cleanup,
file_cleanup);
}
old_file->filehand = INVALID_HANDLE_VALUE;
apr_pool_cleanup_kill(old_file->pool, (void *)old_file,
file_cleanup);
/* Create a pollset with room for one descriptor. */
/* ### check return codes */
(void) apr_pollset_create(&(*new_file)->pollset, 1, p, 0);
return APR_SUCCESS;
}
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