Mercurial > hg > nginx-quic
view src/core/ngx_parse_time.h @ 8484:3e78c12d4f37 stable-1.20
Resolver: explicit check for compression pointers in question.
Since nginx always uses exactly one entry in the question section of
a DNS query, and never uses compression pointers in this entry, parsing
of a DNS response in ngx_resolver_process_response() does not expect
compression pointers to appear in the question section of the DNS
response. Indeed, compression pointers in the first name of a DNS response
hardly make sense, do not seem to be allowed by RFC 1035 (which says
"a pointer to a prior occurance of the same name", note "prior"), and
were never observed in practice.
Added an explicit check to ngx_resolver_process_response()'s parsing
of the question section to properly report an error if compression pointers
nevertheless appear in the question section.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Tue, 25 May 2021 15:17:50 +0300 |
parents | 8b6fa4842133 |
children |
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/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #ifndef _NGX_PARSE_TIME_H_INCLUDED_ #define _NGX_PARSE_TIME_H_INCLUDED_ #include <ngx_config.h> #include <ngx_core.h> time_t ngx_parse_http_time(u_char *value, size_t len); /* compatibility */ #define ngx_http_parse_time(value, len) ngx_parse_http_time(value, len) #endif /* _NGX_PARSE_TIME_H_INCLUDED_ */