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OK, in five minutes, trying not to remember what anyone else said:
sub updateTiles { my $fto = $htmDir . 'tile.htm'; ## global var used my $content = ''; open(HOME,$fto); ## no checking for return value, could have redirect or pipe opens while (<HOME>) { $content .= $_ } ## inefficient close(HOME); my $paramTemp,$contentTemp; ## $contentTemp is NOT BEING DECLARED LOCAL (very misleading) my @sections = qw(Tile Pile Link); foreach $section (@sections) { ## no declaration of $section $contentTemp = $query->param($section); ## use of global $query. Why is contentTemp not declared here? if ($section eq 'Pile') { $contentTemp =~ s/[\n\r]/<p> +/g; } if ($section eq 'Link') { $contentTemp = "<img src=\"i +mages/enter.gif\" width=8 height=12><a href=\"cgi-bin/show.cgi?action +=showTiles&tileType=Search&searchFor=$contentTemp\">View this month's + tiles.</a>" } ## ampersands not entitized, inserted content not entitized or escape +d $content =~ s/<!--$section-->(.*)/<!--$section-->$cont +entTemp/; ## parens not needed on .*, what if $section has regex chars? } open(HOME,">$fto"); ## no checking return values; what if $fto starts with >? print HOME $content; ## could get IO error. What if visitor hits page while partially writ +ten? close(HOME); ## could get IO error. my $image = $query->param('Image'); if ($image ne '') { my $newFile = fileUpload('Image',250000,1, +'latest_image','JPEG','.jpg','.jpeg') } ## image might be undef if param not provided. }
This code is clearly not -w or strict compatible.

See what you can get for $10 of my time? How many of those would you have found for $10 of your time? {grin}

-- Randal L. Schwartz, Perl hacker


In reply to Re: How many bugs can *you* find by merlyn
in thread How many bugs can *you* find by Ovid

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    [Corion]: Ah - if that information is saved in a file, then you could theoretically spam that file and confuse getlogin(). So, don't use it for authentication :)
    [tye]: that is what getlogin() certainly *used* to do. I don't believe that is what it certainly should do.
    [davido]: /var/run/utmp is 664 i think.
    [tye]: Note that my "man getlogin" says that it uses stdin when it should use /dev/tty (calling a glibc bug). But that does not appear to be the case when I test it. But maybe Perl's getlogin() is not using glibc's getlogin().
    [oiskuu]: well, run a strace and see what the getlogin does for you.... As I said. SELinux probably has those security labels. But not regular linux.
    [tye]: for example, read https://unix. stackexchange.com/ questions/146138/ loginuid-should-be -allowed-to-change -or-not-mutable-or -not
    [tye]: I'm not using SELinux and it certainly appears to disagree with you. shrug
    [tye]: Since you brought up /proc, oiskuu, I didn't see you respond to my suggestion of 'loginuid'. Does your /proc not have such?

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