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Spliting arguments

 
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honeybee
Halfop


Joined: 01 Jan 2006
Posts: 80
PostPosted: Thu Jun 29, 2006 1:45 pm    Post subject: Spliting arguments Reply with quote
I'm using a public command tcl, though i have splited the argument
Quote:
example: [lrange [split $arg] 1 end]

but still if someone use reason with special chars like [ or \ the reason appeared to be
Quote:
like: {[/z]} {}) or {[whatever reason with brackets]})
, which is surely a security whole.
[/quote]
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De Kus
Revered One


Joined: 15 Dec 2002
Posts: 1361
Location: Germany
PostPosted: Thu Jun 29, 2006 1:48 pm    Post subject: Reply with quote
Security wholes you only make yourself. If properly used it doesnt matter which bytes they use. Split is doing its job well... if needed. The thing you probably wanted to do is:
[join [lrange [split $arg] 1 end]]
or equivalent one:
[join [lreplace [split $arg] 0 0]]
or without any list functions:
[string range $arg [expr {[string first " " $arg] + 1}] end]
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De Kus
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