Mercurial > hg > nginx-quic
annotate auto/endianness @ 7401:a7ff19afbb14
Negative size buffers detection.
In the past, there were several security issues which resulted in
worker process memory disclosure due to buffers with negative size.
It looks reasonable to check for such buffers in various places,
much like we already check for zero size buffers.
While here, removed "#if 1 / #endif" around zero size buffer checks.
It looks highly unlikely that we'll disable these checks anytime soon.
author | Maxim Dounin <mdounin@mdounin.ru> |
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date | Mon, 26 Nov 2018 18:29:56 +0300 |
parents | e3faa5fb7772 |
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rev | line source |
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2 # Copyright (C) Igor Sysoev |
4412 | 3 # Copyright (C) Nginx, Inc. |
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6 echo $ngx_n "checking for system byte ordering ...$ngx_c" |
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8 cat << END >> $NGX_AUTOCONF_ERR |
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10 ---------------------------------------- |
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11 checking for system byte ordering |
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13 END |
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16 cat << END > $NGX_AUTOTEST.c |
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18 int main(void) { |
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19 int i = 0x11223344; |
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20 char *p; |
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21 |
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22 p = (char *) &i; |
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23 if (*p == 0x44) return 0; |
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24 return 1; |
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25 } |
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27 END |
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28 |
583 | 29 ngx_test="$CC $CC_TEST_FLAGS $CC_AUX_FLAGS \ |
577 | 30 -o $NGX_AUTOTEST $NGX_AUTOTEST.c $NGX_LD_OPT $ngx_feature_libs" |
31 | |
32 eval "$ngx_test >> $NGX_AUTOCONF_ERR 2>&1" | |
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33 |
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34 if [ -x $NGX_AUTOTEST ]; then |
703 | 35 if $NGX_AUTOTEST >/dev/null 2>&1; then |
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36 echo " little endian" |
469 | 37 have=NGX_HAVE_LITTLE_ENDIAN . auto/have |
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38 else |
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39 echo " big endian" |
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40 fi |
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41 |
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42 rm -rf $NGX_AUTOTEST* |
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43 |
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44 else |
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45 rm -rf $NGX_AUTOTEST* |
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47 echo |
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48 echo "$0: error: cannot detect system byte ordering" |
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49 exit 1 |
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50 fi |