Mercurial > hg > nginx
annotate src/os/win32/ngx_time.c @ 7851:aa5f8825f24d
Resolver: fixed label types handling in ngx_resolver_copy().
Previously, anything with any of the two high bits set were interpreted
as compression pointers. This is incorrect, as RFC 1035 clearly states
that "The 10 and 01 combinations are reserved for future use". Further,
the 01 combination is actually allocated for EDNS extended label type
(see RFC 2671 and RFC 6891), not really used though.
Fix is to reject unrecognized label types rather than misinterpreting
them as compression pointers.
author | Maxim Dounin <mdounin@mdounin.ru> |
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date | Tue, 25 May 2021 15:17:41 +0300 |
parents | f95de1361039 |
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rev | line source |
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1 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
4412 | 4 * Copyright (C) Nginx, Inc. |
441
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5 */ |
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7 |
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8 #include <ngx_config.h> |
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9 #include <ngx_core.h> |
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10 |
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11 |
563 | 12 void |
13 ngx_gettimeofday(struct timeval *tp) | |
179
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14 { |
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15 uint64_t intervals; |
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16 FILETIME ft; |
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17 |
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18 GetSystemTimeAsFileTime(&ft); |
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19 |
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20 /* |
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21 * A file time is a 64-bit value that represents the number |
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22 * of 100-nanosecond intervals that have elapsed since |
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23 * January 1, 1601 12:00 A.M. UTC. |
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24 * |
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25 * Between January 1, 1970 (Epoch) and January 1, 1601 there were |
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26 * 134774 days, |
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27 * 11644473600 seconds or |
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28 * 11644473600,000,000,0 100-nanosecond intervals. |
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29 * |
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30 * See also MSKB Q167296. |
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31 */ |
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32 |
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33 intervals = ((uint64_t) ft.dwHighDateTime << 32) | ft.dwLowDateTime; |
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34 intervals -= 116444736000000000; |
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36 tp->tv_sec = (long) (intervals / 10000000); |
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37 tp->tv_usec = (long) ((intervals % 10000000) / 10); |
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38 } |
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39 |
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40 |
563 | 41 void |
42 ngx_libc_localtime(time_t s, struct tm *tm) | |
509 | 43 { |
44 struct tm *t; | |
45 | |
563 | 46 t = localtime(&s); |
509 | 47 *tm = *t; |
48 } | |
49 | |
50 | |
563 | 51 void |
52 ngx_libc_gmtime(time_t s, struct tm *tm) | |
509 | 53 { |
54 struct tm *t; | |
55 | |
563 | 56 t = gmtime(&s); |
509 | 57 *tm = *t; |
58 } | |
59 | |
60 | |
563 | 61 ngx_int_t |
62 ngx_gettimezone(void) | |
324
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63 { |
2724 | 64 u_long n; |
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65 TIME_ZONE_INFORMATION tz; |
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66 |
2724 | 67 n = GetTimeZoneInformation(&tz); |
68 | |
69 switch (n) { | |
70 | |
71 case TIME_ZONE_ID_UNKNOWN: | |
324
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72 return -tz.Bias; |
2724 | 73 |
74 case TIME_ZONE_ID_STANDARD: | |
75 return -(tz.Bias + tz.StandardBias); | |
76 | |
77 case TIME_ZONE_ID_DAYLIGHT: | |
78 return -(tz.Bias + tz.DaylightBias); | |
79 | |
80 default: /* TIME_ZONE_ID_INVALID */ | |
81 return 0; | |
324
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82 } |
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83 } |