nginx/src/os/win32/ngx_event_log.c

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/*
* Copyright (C) Igor Sysoev
*/
#include <ngx_config.h>
#include <ngx_core.h>
#define NGX_MAX_ERROR_STR 2048
void ngx_cdecl
ngx_event_log(ngx_err_t err, const char *fmt, ...)
{
u_char *p, *last;
long types;
HKEY key;
HANDLE ev;
va_list args;
u_char text[NGX_MAX_ERROR_STR];
const char *msgarg[9];
static u_char netmsg[] = "%SystemRoot%\\System32\\netmsg.dll";
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last = text + NGX_MAX_ERROR_STR;
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p = text + GetModuleFileName(NULL, (char *) text, NGX_MAX_ERROR_STR - 50);
*p++ = ':';
ngx_linefeed(p);
va_start(args, fmt);
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p = ngx_vslprintf(p, last, fmt, args);
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va_end(args);
if (err) {
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p = ngx_log_errno(p, last, err);
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}
if (p > last - NGX_LINEFEED_SIZE - 1) {
p = last - NGX_LINEFEED_SIZE - 1;
}
ngx_linefeed(p);
*p = '\0';
/*
* we do not log errors here since we use
* Event Log only to log our own logs open errors
*/
if (RegCreateKeyEx(HKEY_LOCAL_MACHINE,
"SYSTEM\\CurrentControlSet\\Services\\EventLog\\Application\\nginx",
0, NULL, REG_OPTION_NON_VOLATILE, KEY_SET_VALUE, NULL, &key, NULL)
!= 0)
{
return;
}
if (RegSetValueEx(key, "EventMessageFile", 0, REG_EXPAND_SZ,
netmsg, sizeof(netmsg) - 1)
!= 0)
{
return;
}
types = EVENTLOG_ERROR_TYPE;
if (RegSetValueEx(key, "TypesSupported", 0, REG_DWORD,
(u_char *) &types, sizeof(long))
!= 0)
{
return;
}
RegCloseKey(key);
ev = RegisterEventSource(NULL, "nginx");
msgarg[0] = (char *) text;
msgarg[1] = NULL;
msgarg[2] = NULL;
msgarg[3] = NULL;
msgarg[4] = NULL;
msgarg[5] = NULL;
msgarg[6] = NULL;
msgarg[7] = NULL;
msgarg[8] = NULL;
/*
* the 3299 event id in netmsg.dll has the generic message format:
* "%1 %2 %3 %4 %5 %6 %7 %8 %9"
*/
ReportEvent(ev, EVENTLOG_ERROR_TYPE, 0, 3299, NULL, 9, 0, msgarg, NULL);
DeregisterEventSource(ev);
}