Documentation
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Overview ¶
Package charcheck provides character-level security checks shared across path validation (localfileio) and input validation (validate) packages. Keeping these checks in one place ensures consistent detection of dangerous Unicode and control characters throughout the codebase.
Index ¶
Constants ¶
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Variables ¶
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Functions ¶
func IsDangerousUnicode ¶
IsDangerousUnicode identifies Unicode code points used for visual spoofing attacks. These characters are invisible or alter text direction, allowing attackers to make "report.exe" display as "report.txt" (Bidi override) or insert hidden content (zero-width characters).
func RejectControlChars ¶
RejectControlChars rejects C0 control characters (except \t and \n) and dangerous Unicode characters (Bidi overrides, zero-width, line/paragraph separators) that enable visual spoofing attacks.
Types ¶
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Source Files