Mercurial > hg > nginx
view src/os/win32/ngx_errno.c @ 7585:746567d633ac
Win32: improved fallback on FormatMessage() errors.
FormatMessage() seems to return many errors which essentially indicate that
the language in question is not available. At least the following were
observed in the wild and during testing: ERROR_MUI_FILE_NOT_FOUND (15100)
(ticket #1868), ERROR_RESOURCE_TYPE_NOT_FOUND (1813). While documentation
says it should be ERROR_RESOURCE_LANG_NOT_FOUND (1815), this doesn't seem
to be the case.
As such, checking error code was removed, and as long as FormatMessage()
returns an error, we now always try the default language.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Mon, 21 Oct 2019 19:06:12 +0300 |
parents | f1a0de6eb505 |
children |
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/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #include <ngx_config.h> #include <ngx_core.h> u_char * ngx_strerror(ngx_err_t err, u_char *errstr, size_t size) { u_int len; static u_long lang = MAKELANGID(LANG_ENGLISH, SUBLANG_ENGLISH_US); if (size == 0) { return errstr; } len = FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL, err, lang, (char *) errstr, size, NULL); if (len == 0 && lang) { /* * Try to use English messages first and fallback to a language, * based on locale: non-English Windows have no English messages * at all. This way allows to use English messages at least on * Windows with MUI. */ lang = 0; len = FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL, err, lang, (char *) errstr, size, NULL); } if (len == 0) { return ngx_snprintf(errstr, size, "FormatMessage() error:(%d)", GetLastError()); } /* remove ".\r\n\0" */ while (errstr[len] == '\0' || errstr[len] == CR || errstr[len] == LF || errstr[len] == '.') { --len; } return &errstr[++len]; } ngx_int_t ngx_strerror_init(void) { return NGX_OK; }