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/* ====================================================================
* The Apache Software License, Version 1.1
*
* Copyright (c) 2000 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Apache" and "Apache Software Foundation" must
* not be used to endorse or promote products derived from this
* software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache",
* nor may "Apache" appear in their name, without prior written
* permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
#include "win32/fileio.h"
#include "apr_file_io.h"
#include "apr_general.h"
#include "apr_strings.h"
#include <errno.h>
#include <string.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "misc.h"
APR_DECLARE(apr_status_t) apr_set_pipe_timeout(apr_file_t *thepipe, apr_interval_time_t timeout)
{
if (thepipe->pipe == 1) {
thepipe->timeout = timeout;
return APR_SUCCESS;
}
return APR_EINVAL;
}
APR_DECLARE(apr_status_t) apr_get_pipe_timeout(apr_file_t *thepipe, apr_interval_time_t *timeout)
{
if (thepipe->pipe == 1) {
*timeout = thepipe->timeout;
return APR_SUCCESS;
}
return APR_EINVAL;
}
APR_DECLARE(apr_status_t) apr_create_pipe(apr_file_t **in, apr_file_t **out, apr_pool_t *p)
{
SECURITY_ATTRIBUTES sa;
sa.nLength = sizeof(sa);
sa.bInheritHandle = TRUE;
sa.lpSecurityDescriptor = NULL;
(*in) = (apr_file_t *)apr_pcalloc(p, sizeof(apr_file_t));
(*in)->cntxt = p;
(*in)->n.fname = "\0\0"; // What was this??? : apr_pstrdup(p, "PIPE"); */
(*in)->pipe = 1;
(*in)->timeout = -1;
(*in)->ungetchar = -1;
(*in)->eof_hit = 0;
(*in)->filePtr = 0;
(*in)->bufpos = 0;
(*in)->dataRead = 0;
(*in)->direction = 0;
(*out) = (apr_file_t *)apr_pcalloc(p, sizeof(apr_file_t));
(*out)->cntxt = p;
(*in)->n.fname = "\0\0"; // What was this??? : apr_pstrdup(p, "PIPE"); */
(*out)->pipe = 1;
(*out)->timeout = -1;
(*out)->ungetchar = -1;
(*out)->eof_hit = 0;
(*out)->filePtr = 0;
(*out)->bufpos = 0;
(*out)->dataRead = 0;
(*out)->direction = 0;
if (!CreatePipe(&(*in)->filehand, &(*out)->filehand, &sa, 0)) {
return apr_get_os_error();
}
apr_register_cleanup((*in)->cntxt, (void *)(*in), file_cleanup,
apr_null_cleanup);
apr_register_cleanup((*out)->cntxt, (void *)(*out), file_cleanup,
apr_null_cleanup);
return APR_SUCCESS;
}
/* apr_create_nt_pipe()
* An internal (for now) APR function created for use by apr_create_process()
* when setting up pipes to communicate with the child process.
* apr_create_nt_pipe() allows setting the blocking mode of each end of
* the pipe when the pipe is created (rather than after the pipe is created).
* A pipe handle must be opened in full async i/o mode in order to
* emulate Unix non-blocking pipes with timeouts.
*
* In general, we don't want to enable child side pipe handles for async i/o.
* This prevents us from enabling both ends of the pipe for async i/o in
* apr_create_pipe.
*
* Why not use NamedPipes on NT which support setting pipe state to
* non-blocking? On NT, even though you can set a pipe non-blocking,
* there is no clean way to set event driven non-zero timeouts (e.g select(),
* WaitForSinglelObject, et. al. will not detect pipe i/o). On NT, you
* have to poll the pipe to detech i/o on a non-blocking pipe.
*
* wgs
*/
apr_status_t apr_create_nt_pipe(apr_file_t **in, apr_file_t **out,
BOOLEAN bAsyncRead, BOOLEAN bAsyncWrite,
apr_pool_t *p)
{
apr_oslevel_e level;
SECURITY_ATTRIBUTES sa;
static unsigned long id = 0;
DWORD dwPipeMode;
DWORD dwOpenMode;
char name[50];
sa.nLength = sizeof(sa);
sa.bInheritHandle = TRUE;
sa.lpSecurityDescriptor = NULL;
(*in) = (apr_file_t *)apr_pcalloc(p, sizeof(apr_file_t));
(*in)->cntxt = p;
(*in)->n.fname = "\0\0"; // What was this??? : apr_pstrdup(p, "PIPE"); */
(*in)->pipe = 1;
(*in)->timeout = -1;
(*in)->ungetchar = -1;
(*in)->eof_hit = 0;
(*in)->filePtr = 0;
(*in)->bufpos = 0;
(*in)->dataRead = 0;
(*in)->direction = 0;
(*in)->pOverlapped = NULL;
(*out) = (apr_file_t *)apr_pcalloc(p, sizeof(apr_file_t));
(*out)->cntxt = p;
(*in)->n.fname = "\0\0"; // What was this??? : apr_pstrdup(p, "PIPE"); */
(*out)->pipe = 1;
(*out)->timeout = -1;
(*out)->ungetchar = -1;
(*out)->eof_hit = 0;
(*out)->filePtr = 0;
(*out)->bufpos = 0;
(*out)->dataRead = 0;
(*out)->direction = 0;
(*out)->pOverlapped = NULL;
if (apr_get_oslevel(p, &level) == APR_SUCCESS && level >= APR_WIN_NT) {
/* Create the read end of the pipe */
dwOpenMode = PIPE_ACCESS_INBOUND;
if (bAsyncRead) {
dwOpenMode |= FILE_FLAG_OVERLAPPED;
(*in)->pOverlapped = (OVERLAPPED*) apr_pcalloc(p, sizeof(OVERLAPPED));
(*in)->pOverlapped->hEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
/* register a cleanup for the event handle... */
}
dwPipeMode = 0;
sprintf(name, "\\\\.\\pipe\\%d.%d", getpid(), id++);
(*in)->filehand = CreateNamedPipe(name,
dwOpenMode,
dwPipeMode,
1, //nMaxInstances,
8182, //nOutBufferSize,
8192, //nInBufferSize,
1, //nDefaultTimeOut,
&sa);
/* Create the write end of the pipe */
dwOpenMode = FILE_ATTRIBUTE_NORMAL;
if (bAsyncWrite) {
dwOpenMode |= FILE_FLAG_OVERLAPPED;
(*out)->pOverlapped = (OVERLAPPED*) apr_pcalloc(p, sizeof(OVERLAPPED));
(*out)->pOverlapped->hEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
}
(*out)->filehand = CreateFile(name,
GENERIC_WRITE, // access mode
0, // share mode
&sa, // Security attributes
OPEN_EXISTING, // dwCreationDisposition
dwOpenMode, // Pipe attributes
NULL); // handle to template file
}
else {
/* Pipes on Win9* are blocking. Live with it. */
if (!CreatePipe(&(*in)->filehand, &(*out)->filehand, &sa, 0)) {
return apr_get_os_error();
}
}
return APR_SUCCESS;
}
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