Mercurial > hg > nginx
annotate src/core/ngx_sha1.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> |
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date | Tue, 04 Jul 2017 18:07:29 +0300 |
parents | 9eefb38f0005 |
children |
rev | line source |
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1573 | 1 |
2 /* | |
3 * Copyright (C) Igor Sysoev | |
4412 | 4 * Copyright (C) Nginx, Inc. |
1573 | 5 */ |
6 | |
7 | |
8 #ifndef _NGX_SHA1_H_INCLUDED_ | |
9 #define _NGX_SHA1_H_INCLUDED_ | |
10 | |
11 | |
12 #include <ngx_config.h> | |
13 #include <ngx_core.h> | |
14 | |
15 | |
6586
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An internal SHA1 implementation.
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16 typedef struct { |
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17 uint64_t bytes; |
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18 uint32_t a, b, c, d, e, f; |
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19 u_char buffer[64]; |
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20 } ngx_sha1_t; |
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21 |
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An internal SHA1 implementation.
Maxim Dounin <mdounin@mdounin.ru>
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22 |
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An internal SHA1 implementation.
Maxim Dounin <mdounin@mdounin.ru>
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23 void ngx_sha1_init(ngx_sha1_t *ctx); |
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24 void ngx_sha1_update(ngx_sha1_t *ctx, const void *data, size_t size); |
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parents:
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25 void ngx_sha1_final(u_char result[20], ngx_sha1_t *ctx); |
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26 |
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An internal SHA1 implementation.
Maxim Dounin <mdounin@mdounin.ru>
parents:
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27 |
1573 | 28 #endif /* _NGX_SHA1_H_INCLUDED_ */ |