Mercurial > hg > nginx
annotate src/os/win32/ngx_time.c @ 7094:c7d4017c8876
Secure link: fixed stack buffer overflow.
When secure link checksum has length of 23 or 24 bytes, decoded base64 value
could occupy 17 or 18 bytes which is more than 16 bytes previously allocated
for it on stack. The buffer overflow does not have any security implications
since only one local variable was corrupted and this variable was not used in
this case.
The fix is to increase buffer size up to 18 bytes. Useless buffer size
initialization is removed as well.
author | Roman Arutyunyan <arut@nginx.com> |
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date | Tue, 22 Aug 2017 21:22:59 +0300 |
parents | d620f497c50f |
children | f95de1361039 |
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 * 134744 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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35 |
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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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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: | |
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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; | |
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82 } |
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83 } |