Mercurial > hg > nginx
annotate src/os/win32/ngx_event_log.c @ 7690:8253424d1aff
Added size check to ngx_http_alloc_large_header_buffer().
This ensures that copying won't write more than the buffer size
even if the buffer comes from hc->free and it is smaller than the large
client header buffer size in the virtual host configuration. This might
happen if size of large client header buffers is different in name-based
virtual hosts, similarly to the problem with number of buffers fixed
in 6926:e662cbf1b932.
| author | Maxim Dounin <mdounin@mdounin.ru> |
|---|---|
| date | Thu, 06 Aug 2020 05:02:22 +0300 |
| parents | d620f497c50f |
| children |
| rev | line source |
|---|---|
| 2725 | 1 /* |
| 2 * Copyright (C) Igor Sysoev | |
| 4412 | 3 * Copyright (C) Nginx, Inc. |
| 2725 | 4 */ |
| 5 | |
| 6 | |
| 7 #include <ngx_config.h> | |
| 8 #include <ngx_core.h> | |
| 9 | |
| 10 | |
| 11 #define NGX_MAX_ERROR_STR 2048 | |
| 12 | |
| 13 | |
| 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"; | |
| 25 | |
|
2764
d4a717592877
use ngx_vslprintf(), ngx_slprintf()
Igor Sysoev <igor@sysoev.ru>
parents:
2725
diff
changeset
|
26 last = text + NGX_MAX_ERROR_STR; |
| 2725 | 27 p = text + GetModuleFileName(NULL, (char *) text, NGX_MAX_ERROR_STR - 50); |
| 28 | |
| 29 *p++ = ':'; | |
| 30 ngx_linefeed(p); | |
| 31 | |
| 32 va_start(args, fmt); | |
|
2764
d4a717592877
use ngx_vslprintf(), ngx_slprintf()
Igor Sysoev <igor@sysoev.ru>
parents:
2725
diff
changeset
|
33 p = ngx_vslprintf(p, last, fmt, args); |
| 2725 | 34 va_end(args); |
| 35 | |
| 36 if (err) { | |
| 2765 | 37 p = ngx_log_errno(p, last, err); |
| 2725 | 38 } |
| 39 | |
| 40 if (p > last - NGX_LINEFEED_SIZE - 1) { | |
| 41 p = last - NGX_LINEFEED_SIZE - 1; | |
| 42 } | |
| 43 | |
| 44 ngx_linefeed(p); | |
| 45 | |
| 46 *p = '\0'; | |
| 47 | |
| 48 /* | |
| 49 * we do not log errors here since we use | |
| 50 * Event Log only to log our own logs open errors | |
| 51 */ | |
| 52 | |
| 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 } | |
| 60 | |
| 61 if (RegSetValueEx(key, "EventMessageFile", 0, REG_EXPAND_SZ, | |
| 62 netmsg, sizeof(netmsg) - 1) | |
| 63 != 0) | |
| 64 { | |
| 65 return; | |
| 66 } | |
| 67 | |
| 68 types = EVENTLOG_ERROR_TYPE; | |
| 69 | |
| 70 if (RegSetValueEx(key, "TypesSupported", 0, REG_DWORD, | |
| 71 (u_char *) &types, sizeof(long)) | |
| 72 != 0) | |
| 73 { | |
| 74 return; | |
| 75 } | |
| 76 | |
| 77 RegCloseKey(key); | |
| 78 | |
| 79 ev = RegisterEventSource(NULL, "nginx"); | |
| 80 | |
| 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; | |
| 90 | |
| 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 */ | |
| 95 | |
| 96 ReportEvent(ev, EVENTLOG_ERROR_TYPE, 0, 3299, NULL, 9, 0, msgarg, NULL); | |
| 97 | |
| 98 DeregisterEventSource(ev); | |
| 99 } |