Mercurial > hg > nginx-quic
annotate src/core/ngx_crc32.h @ 4367:9c4acdf9b276 stable-1.0
Merge of r4315:
Allowed add_header for proxied 206 replies.
It was working for nginx's own 206 replies as they are seen as 200 in the
headers filter module (range filter goes later in the headers filter chain),
but not for proxied replies.
author | Maxim Dounin <mdounin@mdounin.ru> |
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date | Wed, 14 Dec 2011 18:06:21 +0000 |
parents | d6afb8723155 |
children | d620f497c50f |
rev | line source |
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790 | 1 |
2 /* | |
3 * Copyright (C) Igor Sysoev | |
4 */ | |
5 | |
6 | |
7 #ifndef _NGX_CRC32_H_INCLUDED_ | |
8 #define _NGX_CRC32_H_INCLUDED_ | |
9 | |
10 | |
11 #include <ngx_config.h> | |
12 #include <ngx_core.h> | |
13 | |
14 | |
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15 extern uint32_t *ngx_crc32_table_short; |
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16 extern uint32_t ngx_crc32_table256[]; |
790 | 17 |
18 | |
19 static ngx_inline uint32_t | |
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20 ngx_crc32_short(u_char *p, size_t len) |
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21 { |
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22 u_char c; |
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23 uint32_t crc; |
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24 |
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25 crc = 0xffffffff; |
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26 |
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27 while (len--) { |
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28 c = *p++; |
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29 crc = ngx_crc32_table_short[(crc ^ (c & 0xf)) & 0xf] ^ (crc >> 4); |
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30 crc = ngx_crc32_table_short[(crc ^ (c >> 4)) & 0xf] ^ (crc >> 4); |
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31 } |
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32 |
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33 return crc ^ 0xffffffff; |
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34 } |
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35 |
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36 |
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37 static ngx_inline uint32_t |
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38 ngx_crc32_long(u_char *p, size_t len) |
790 | 39 { |
40 uint32_t crc; | |
41 | |
42 crc = 0xffffffff; | |
43 | |
44 while (len--) { | |
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45 crc = ngx_crc32_table256[(crc ^ *p++) & 0xff] ^ (crc >> 8); |
790 | 46 } |
47 | |
48 return crc ^ 0xffffffff; | |
49 } | |
50 | |
51 | |
1694
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52 #define ngx_crc32_init(crc) \ |
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53 crc = 0xffffffff |
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54 |
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55 |
1697 | 56 static ngx_inline void |
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57 ngx_crc32_update(uint32_t *crc, u_char *p, size_t len) |
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58 { |
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59 uint32_t c; |
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60 |
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61 c = *crc; |
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62 |
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63 while (len--) { |
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64 c = ngx_crc32_table256[(c ^ *p++) & 0xff] ^ (c >> 8); |
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65 } |
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66 |
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67 *crc = c; |
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68 } |
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69 |
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70 |
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71 #define ngx_crc32_final(crc) \ |
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72 crc ^= 0xffffffff |
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73 |
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74 |
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75 ngx_int_t ngx_crc32_table_init(void); |
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76 |
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77 |
790 | 78 #endif /* _NGX_CRC32_H_INCLUDED_ */ |