tony2001 Wed Jun 21 12:42:50 2006 UTC Modified files: /php-src/ext/bz2 bz2.c Log: fix invalid read with bzopen("","") and prevent filename from being empty (which causes endless loop somewhere is libbz2) tests will follow http://cvs.php.net/viewvc.cgi/php-src/ext/bz2/bz2.c?r1=1.20&r2=1.21&diff_format=u Index: php-src/ext/bz2/bz2.c diff -u php-src/ext/bz2/bz2.c:1.20 php-src/ext/bz2/bz2.c:1.21 --- php-src/ext/bz2/bz2.c:1.20 Sat Jun 10 22:59:39 2006 +++ php-src/ext/bz2/bz2.c Wed Jun 21 12:42:50 2006 @@ -16,7 +16,7 @@ +----------------------------------------------------------------------+ */ -/* $Id: bz2.c,v 1.20 2006/06/10 22:59:39 bjori Exp $ */ +/* $Id: bz2.c,v 1.21 2006/06/21 12:42:50 tony2001 Exp $ */ #ifdef HAVE_CONFIG_H #include "config.h" @@ -353,7 +353,7 @@ } convert_to_string_ex(mode); - if (Z_STRVAL_PP(mode)[0] != 'r' && Z_STRVAL_PP(mode)[0] != 'w' && Z_STRVAL_PP(mode)[1] != '\0') { + if (Z_STRLEN_PP(mode) != 1 || (Z_STRVAL_PP(mode)[0] != 'r' && Z_STRVAL_PP(mode)[0] != 'w')) { php_error_docref(NULL TSRMLS_CC, E_WARNING, "'%s' is not a valid mode for bzopen(). Only 'w' and 'r' are supported.", Z_STRVAL_PP(mode)); RETURN_FALSE; } @@ -361,6 +361,12 @@ /* If it's not a resource its a string containing the filename to open */ if (Z_TYPE_PP(file) != IS_RESOURCE) { convert_to_string_ex(file); + + if (Z_STRLEN_PP(file) == 0) { + php_error_docref(NULL TSRMLS_CC, E_WARNING, "filename cannot be empty"); + RETURN_FALSE; + } + stream = php_stream_bz2open(NULL, Z_STRVAL_PP(file), Z_STRVAL_PP(mode),
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