Mercurial > hg > nginx
view src/os/win32/ngx_dlopen.h @ 7048:80224192163c
Resolver: fixed possible use-after-free while resolving SRV.
Resolving an SRV record includes resolving its host names in subrequests.
Previously, if memory allocation failed while reporting a subrequest result
after receiving a response from a DNS server, the SRV resolve handler was
called immediately with the NGX_ERROR state. However, if the SRV record
included another copy of the resolved name, it was reported once again.
This could trigger the use-after-free memory access after SRV resolve
handler freed the resolve context by calling ngx_resolve_name_done().
Now the SRV resolve handler is called only when all its subrequests are
completed.
author | Roman Arutyunyan <arut@nginx.com> |
---|---|
date | Tue, 04 Jul 2017 18:07:29 +0300 |
parents | 7142b04337d6 |
children |
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/* * Copyright (C) Maxim Dounin * Copyright (C) Nginx, Inc. */ #ifndef _NGX_DLOPEN_H_INCLUDED_ #define _NGX_DLOPEN_H_INCLUDED_ #include <ngx_config.h> #include <ngx_core.h> #define NGX_HAVE_DLOPEN 1 #define ngx_dlopen(path) LoadLibrary((char *) path) #define ngx_dlopen_n "LoadLibrary()" #define ngx_dlsym(handle, symbol) (void *) GetProcAddress(handle, symbol) #define ngx_dlsym_n "GetProcAddress()" #define ngx_dlclose(handle) (FreeLibrary(handle) ? 0 : -1) #define ngx_dlclose_n "FreeLibrary()" char *ngx_dlerror(void); #endif /* _NGX_DLOPEN_H_INCLUDED_ */