view src/os/win32/ngx_event_log.c @ 7444:4089b3d2cb59

Win32: added WSAPoll() support. WSAPoll() is only available with Windows Vista and newer (and only available during compilation if _WIN32_WINNT >= 0x0600). To make sure the code works with Windows XP, we do not redefine _WIN32_WINNT, but instead load WSAPoll() dynamically if it is not available during compilation. Also, sockets are not guaranteed to be small integers on Windows. So an index array is used instead of NGX_USE_FD_EVENT to map events to connections.
author Maxim Dounin <mdounin@mdounin.ru>
date Thu, 24 Jan 2019 21:51:21 +0300
parents d620f497c50f
children
line wrap: on
line source

/*
 * Copyright (C) Igor Sysoev
 * Copyright (C) Nginx, Inc.
 */


#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";

    last = text + NGX_MAX_ERROR_STR;
    p = text + GetModuleFileName(NULL, (char *) text, NGX_MAX_ERROR_STR - 50);

    *p++ = ':';
    ngx_linefeed(p);

    va_start(args, fmt);
    p = ngx_vslprintf(p, last, fmt, args);
    va_end(args);

    if (err) {
        p = ngx_log_errno(p, last, err);
    }

    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);
}