Mercurial > hg > nginx-quic
view auto/lib/sha1/conf @ 4617:972642646f06
Rewrite: fixed escaping and possible segfault (ticket #162).
The following code resulted in incorrect escaping of uri and possible
segfault:
location / {
rewrite ^(.*) $1?c=$1;
return 200 "$uri";
}
If there were arguments in a rewrite's replacement string, and length was
actually calculated (due to duplicate captures as in the example above,
or variables present), the is_args flag was set and incorrectly copied
after length calculation. This resulted in escaping applied to the uri part
of the replacement, resulting in incorrect escaping. Additionally, buffer
was allocated without escaping expected, thus this also resulted in buffer
overrun and possible segfault.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Fri, 11 May 2012 13:19:22 +0000 |
parents | d620f497c50f |
children | b0a616778038 |
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# Copyright (C) Igor Sysoev # Copyright (C) Nginx, Inc. if [ $SHA1 != NONE ]; then have=NGX_HAVE_SHA1 . auto/have CORE_INCS="$CORE_INCS $SHA1" case "$NGX_CC_NAME" in msvc* | owc* | bcc) LINK_DEPS="$LINK_DEPS $SHA1/sha1.lib" CORE_LIBS="$CORE_LIBS $SHA1/sha1.lib" ;; icc*) LINK_DEPS="$LINK_DEPS $SHA1/libsha.a" # to allow -ipo optimization we link with the *.o but not library CORE_LIBS="$CORE_LIBS $SHA1/sha1_dgst.o" if [ $SHA1_ASM = YES ]; then CORE_LIBS="$CORE_LIBS $SHA1/asm/sx86-elf.o" fi ;; *) LINK_DEPS="$LINK_DEPS $SHA1/libsha.a" CORE_LIBS="$CORE_LIBS $SHA1/libsha.a" #CORE_LIBS="$CORE_LIBS -L $SHA1 -lsha" ;; esac else if [ "$NGX_PLATFORM" != win32 ]; then SHA1=NO # FreeBSD ngx_feature="sha1 in system md library" ngx_feature_name=NGX_HAVE_SHA1 ngx_feature_run=no ngx_feature_incs="#include <sha.h>" ngx_feature_path= ngx_feature_libs="-lmd" ngx_feature_test="SHA_CTX sha1; SHA1_Init(&sha1)" . auto/feature ngx_sha1_lib="system md" if [ $ngx_found = no ]; then # OpenSSL crypto library ngx_feature="OpenSSL sha1 crypto library" ngx_feature_incs="#include <openssl/sha.h>" ngx_feature_libs="-lcrypto" . auto/feature ngx_sha1_lib="system crypto" if [ $ngx_found = yes ]; then have=NGX_HAVE_OPENSSL_SHA1_H . auto/have fi fi if [ $ngx_found = yes ]; then CORE_LIBS="$CORE_LIBS $ngx_feature_libs" SHA1=YES SHA1_LIB=$ngx_sha1_lib fi fi fi