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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.
*/
#define CORE_PRIVATE
#include "httpd.h"
#include "http_log.h"
#include "mpm_winnt.h"
#include "apr_strings.h"
#include "apr_lib.h"
#include "ap_regkey.h"
static char *display_name = NULL;
static HANDLE stderr_thread = NULL;
static HANDLE stderr_ready;
static DWORD WINAPI service_stderr_thread(LPVOID hPipe)
{
HANDLE hPipeRead = (HANDLE) hPipe;
HANDLE hEventSource;
char errbuf[256];
char *errmsg = errbuf;
const char *errarg[9];
DWORD errres;
ap_regkey_t *regkey;
apr_status_t rv;
apr_pool_t *p;
apr_pool_create_ex(&p, NULL, NULL, NULL);
errarg[0] = "The Apache service named";
errarg[1] = display_name;
errarg[2] = "reported the following error:\r\n>>>";
errarg[3] = errbuf;
errarg[4] = NULL;
errarg[5] = NULL;
errarg[6] = NULL;
errarg[7] = NULL;
errarg[8] = NULL;
/* What are we going to do in here, bail on the user? not. */
if ((rv = ap_regkey_open(®key, AP_REGKEY_LOCAL_MACHINE,
"SYSTEM\\CurrentControlSet\\Services\\"
"EventLog\\Application\\Apache Service",
APR_READ | APR_WRITE | APR_CREATE, p))
== APR_SUCCESS)
{
DWORD dwData = EVENTLOG_ERROR_TYPE | EVENTLOG_WARNING_TYPE |
EVENTLOG_INFORMATION_TYPE;
/* The stock message file */
ap_regkey_value_set(regkey, "EventMessageFile",
"%SystemRoot%\\System32\\netmsg.dll",
AP_REGKEY_EXPAND, p);
ap_regkey_value_raw_set(regkey, "TypesSupported", &dwData,
sizeof(dwData), REG_DWORD, p);
ap_regkey_close(regkey);
}
hEventSource = RegisterEventSourceW(NULL, L"Apache Service");
SetEvent(stderr_ready);
while (ReadFile(hPipeRead, errmsg, 1, &errres, NULL) && (errres == 1))
{
if ((errmsg > errbuf) || !apr_isspace(*errmsg))
{
++errmsg;
if ((*(errmsg - 1) == '\n')
|| (errmsg >= errbuf + sizeof(errbuf) - 1))
{
while ((errmsg > errbuf) && apr_isspace(*(errmsg - 1))) {
--errmsg;
}
*errmsg = '\0';
/* Generic message: '%1 %2 %3 %4 %5 %6 %7 %8 %9'
* The event code in netmsg.dll is 3299
*/
ReportEvent(hEventSource, EVENTLOG_ERROR_TYPE, 0,
3299, NULL, 9, 0, errarg, NULL);
errmsg = errbuf;
}
}
}
if ((errres = GetLastError()) != ERROR_BROKEN_PIPE) {
apr_snprintf(errbuf, sizeof(errbuf),
"Win32 error %d reading stderr pipe stream\r\n",
GetLastError());
ReportEvent(hEventSource, EVENTLOG_ERROR_TYPE, 0,
3299, NULL, 9, 0, errarg, NULL);
}
CloseHandle(hPipeRead);
DeregisterEventSource(hEventSource);
CloseHandle(stderr_thread);
stderr_thread = NULL;
apr_pool_destroy(p);
return 0;
}
void mpm_nt_eventlog_stderr_flush(void)
{
HANDLE cleanup_thread = stderr_thread;
if (cleanup_thread) {
HANDLE hErr = GetStdHandle(STD_ERROR_HANDLE);
fclose(stderr);
CloseHandle(hErr);
WaitForSingleObject(cleanup_thread, 30000);
CloseHandle(cleanup_thread);
}
}
void mpm_nt_eventlog_stderr_open(char *argv0, apr_pool_t *p)
{
SECURITY_ATTRIBUTES sa;
HANDLE hProc = GetCurrentProcess();
HANDLE hPipeRead = NULL;
HANDLE hPipeWrite = NULL;
HANDLE hDup = NULL;
DWORD threadid;
int fd;
display_name = argv0;
/* Create a pipe to send stderr messages to the system error log.
*
* _dup2() duplicates the write handle inheritable for us.
*/
sa.nLength = sizeof(sa);
sa.lpSecurityDescriptor = NULL;
sa.bInheritHandle = FALSE;
CreatePipe(&hPipeRead, &hPipeWrite, NULL, 0);
ap_assert(hPipeRead && hPipeWrite);
stderr_ready = CreateEvent(NULL, FALSE, FALSE, NULL);
stderr_thread = CreateThread(NULL, 0, service_stderr_thread,
(LPVOID) hPipeRead, 0, &threadid);
ap_assert(stderr_ready && stderr_thread);
WaitForSingleObject(stderr_ready, INFINITE);
/* Flush stderr and unset its buffer, then commit and replace stderr.
* 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 */);
fd = _open_osfhandle((long) hPipeWrite,
_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.
*/
hPipeWrite = (HANDLE)_get_osfhandle(2);
SetStdHandle(STD_ERROR_HANDLE, hPipeWrite);
/* The code above _will_ corrupt the StdHandle...
* and we must do so anyways. We set this up only
* after we initialized the posix stderr API.
*/
ap_open_stderr_log(p);
}
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