Mercurial > hg > nginx-quic
view src/os/win32/ngx_time.h @ 7400:be5cb9c67c05
Mp4: fixed possible pointer overflow on 32-bit platforms.
On 32-bit platforms mp4->buffer_pos might overflow when a large
enough (close to 4 gigabytes) atom is being skipped, resulting in
incorrect memory addesses being read further in the code. In most
cases this results in harmless errors being logged, though may also
result in a segmentation fault if hitting unmapped pages.
To address this, ngx_mp4_atom_next() now only increments mp4->buffer_pos
up to mp4->buffer_end. This ensures that overflow cannot happen.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Wed, 21 Nov 2018 20:23:16 +0300 |
parents | d620f497c50f |
children |
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/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #ifndef _NGX_TIME_H_INCLUDED_ #define _NGX_TIME_H_INCLUDED_ #include <ngx_config.h> #include <ngx_core.h> typedef ngx_rbtree_key_t ngx_msec_t; typedef ngx_rbtree_key_int_t ngx_msec_int_t; typedef SYSTEMTIME ngx_tm_t; typedef FILETIME ngx_mtime_t; #define ngx_tm_sec wSecond #define ngx_tm_min wMinute #define ngx_tm_hour wHour #define ngx_tm_mday wDay #define ngx_tm_mon wMonth #define ngx_tm_year wYear #define ngx_tm_wday wDayOfWeek #define ngx_tm_sec_t u_short #define ngx_tm_min_t u_short #define ngx_tm_hour_t u_short #define ngx_tm_mday_t u_short #define ngx_tm_mon_t u_short #define ngx_tm_year_t u_short #define ngx_tm_wday_t u_short #define ngx_msleep Sleep #define NGX_HAVE_GETTIMEZONE 1 #define ngx_timezone_update() ngx_int_t ngx_gettimezone(void); void ngx_libc_localtime(time_t s, struct tm *tm); void ngx_libc_gmtime(time_t s, struct tm *tm); void ngx_gettimeofday(struct timeval *tp); #endif /* _NGX_TIME_H_INCLUDED_ */