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src/os/win32/ngx_event_log.c - nginx source code

Functions defined

Macros defined

Source code

  1. /*
  2. * Copyright (C) Igor Sysoev
  3. * Copyright (C) Nginx, Inc.
  4. */


  7. #include <ngx_config.h>
  8. #include <ngx_core.h>


  11. ‌#define NGX_MAX_ERROR_STR   2048


  14. void ngx_cdecl
  15. ‌ngx_event_log(ngx_err_t err, const char *fmt, ...)
  16. {
  17.     u_char         *p, *last;
  18.     long            types;
  19.     HKEY            key;
  20.     HANDLE          ev;
  21.     va_list         args;
  22.     u_char          text[NGX_MAX_ERROR_STR];
  23.     const char     *msgarg[9];
  24.     static u_char   netmsg[] = "%SystemRoot%\\System32\\netmsg.dll";

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

  29.     *p++ = ':';
  30.     ngx_linefeed(p);

  32.     va_start(args, fmt);
  33.     p = ngx_vslprintf(p, last, fmt, args);
  34.     va_end(args);

  36.     if (err) {
  37.         p = ngx_log_errno(p, last, err);
  38.     }

  40.     if (p > last - NGX_LINEFEED_SIZE - 1) {
  41.         p = last - NGX_LINEFEED_SIZE - 1;
  42.     }

  44.     ngx_linefeed(p);

  46.     *p = '\0';

  48.     /*
  49.      * we do not log errors here since we use
  50.      * Event Log only to log our own logs open errors
  51.      */

  53.     if (RegCreateKeyEx(HKEY_LOCAL_MACHINE,
  54.            "SYSTEM\\CurrentControlSet\\Services\\EventLog\\Application\\nginx",
  55.            0, NULL, REG_OPTION_NON_VOLATILE, KEY_SET_VALUE, NULL, &key, NULL)
  56.         != 0)
  57.     {
  58.         return;
  59.     }

  61.     if (RegSetValueEx(key, "EventMessageFile", 0, REG_EXPAND_SZ,
  62.                       netmsg, sizeof(netmsg) - 1)
  63.         != 0)
  64.     {
  65.         return;
  66.     }

  68.     types = EVENTLOG_ERROR_TYPE;

  70.     if (RegSetValueEx(key, "TypesSupported", 0, REG_DWORD,
  71.                       (u_char *) &types, sizeof(long))
  72.         != 0)
  73.     {
  74.         return;
  75.     }

  77.     RegCloseKey(key);

  79.     ev = RegisterEventSource(NULL, "nginx");

  81.     msgarg[0] = (char *) text;
  82.     msgarg[1] = NULL;
  83.     msgarg[2] = NULL;
  84.     msgarg[3] = NULL;
  85.     msgarg[4] = NULL;
  86.     msgarg[5] = NULL;
  87.     msgarg[6] = NULL;
  88.     msgarg[7] = NULL;
  89.     msgarg[8] = NULL;

  91.     /*
  92.      * the 3299 event id in netmsg.dll has the generic message format:
  93.      *     "%1 %2 %3 %4 %5 %6 %7 %8 %9"
  94.      */

  96.     ReportEvent(ev, EVENTLOG_ERROR_TYPE, 0, 3299, NULL, 9, 0, msgarg, NULL);

  98.     DeregisterEventSource(ev);
  99. }

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