view src/os/win32/ngx_event_log.c @ 8222:967cfa6e2ff8

Request body: removed error assumption (ticket #2058). Before introduction of request body filter in 42d9beeb22db, the only possible return code from the ngx_http_request_body_filter() call without actual buffers was NGX_HTTP_INTERNAL_SERVER_ERROR, and the code in ngx_http_read_client_request_body() hardcoded the only possible error to simplify the code of initial call to set rb->rest. This is no longer true after introduction of request body filters though, as a request body filter might need to return other errors, such as 403. Fix is to preserve the error code actually returned by the call instead of assuming 500.
author Maxim Dounin <mdounin@mdounin.ru>
date Mon, 09 Nov 2020 22:41:54 +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);
}