/* 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 DWORD stdhandle = 0; 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_FILE_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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