Bug #72770 [NEW]: logical filter's trim is not trimming trailing spaces

From: Date: Sat, 06 Aug 2016 04:57:21 +0000
Subject: Bug #72770 [NEW]: logical filter's trim is not trimming trailing spaces
Groups: php.bugs 
Request: Send a blank email to php-bugs+get-202990@lists.php.net to get a copy of this message
From:             yohgaki
Operating system: *
PHP version:      Irrelevant
Package:          Filter related
Bug Type:         Bug
Bug description:logical filter's trim is not trimming trailing spaces

Description:
------------
logical_filters.c uses following macro in filter_private.h for trimming
strings.

#define PHP_FILTER_TRIM_DEFAULT_EX(p, len, return_if_empty) { \
	while ((len > 0)  && (*p == ' ' || *p == '\t' || *p ==
'\r' || *p ==
'\v' || *p == '\n')) { \
		p++; \
		len--; \
	} \
	if (len < 1 && return_if_empty) { \
		RETURN_VALIDATION_FAILED("Filter validated value became empty after
trim", 0); \
	} \
	if (len > 0) { \
		while (p[len-1] == ' ' || p[len-1] == '\t' || p[len-1] == '\r' ||
p[len-1] == '\v' || p[len-1] == '\n') { \
			len--; \
		} \
	} \
}

As you can see by the code, trailing spaces are not trimmed, but it only
shorten length by counting spaces in it.

e.g. ' 1234  5678' would result in unwanted condition.





-- 
Edit bug report at https://bugs.php.net/bug.php?id=72770&edit=1
-- 
Try a snapshot (PHP 5.4):   https://bugs.php.net/fix.php?id=72770&r=trysnapshot54
Try a snapshot (PHP 5.5):   https://bugs.php.net/fix.php?id=72770&r=trysnapshot55
Try a snapshot (trunk):     https://bugs.php.net/fix.php?id=72770&r=trysnapshottrunk
Fixed in SVN:               https://bugs.php.net/fix.php?id=72770&r=fixed
Fixed in release:           https://bugs.php.net/fix.php?id=72770&r=alreadyfixed
Need backtrace:             https://bugs.php.net/fix.php?id=72770&r=needtrace
Need Reproduce Script:      https://bugs.php.net/fix.php?id=72770&r=needscript
Try newer version:          https://bugs.php.net/fix.php?id=72770&r=oldversion
Not developer issue:        https://bugs.php.net/fix.php?id=72770&r=support
Expected behavior:          https://bugs.php.net/fix.php?id=72770&r=notwrong
Not enough info:            https://bugs.php.net/fix.php?id=72770&r=notenoughinfo
Submitted twice:            https://bugs.php.net/fix.php?id=72770&r=submittedtwice
register_globals:           https://bugs.php.net/fix.php?id=72770&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=72770&r=php4
Daylight Savings:           https://bugs.php.net/fix.php?id=72770&r=dst
IIS Stability:              https://bugs.php.net/fix.php?id=72770&r=isapi
Install GNU Sed:            https://bugs.php.net/fix.php?id=72770&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=72770&r=float
No Zend Extensions:         https://bugs.php.net/fix.php?id=72770&r=nozend
MySQL Configuration Error:  https://bugs.php.net/fix.php?id=72770&r=mysqlcfg



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