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Code Issues Releases Wiki Activity

Added method to check for same script

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M66B 2020-04-13 14:20:19 +02:00
parent 7be79a6b2e
commit f22cdd6791
1 changed files with 20 additions and 0 deletions
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20
app/src/main/java/eu/faircode/email/Helper.java
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@ -869,6 +869,26 @@ public class Helper {
return true;
}
static boolean isSingleScript(String s) {
// https://en.wikipedia.org/wiki/IDN_homograph_attack
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.N)
return true;
Character.UnicodeScript script = null;
for (int i = 0; i < s.length(); ) {
int codepoint = s.codePointAt(i);
i += Character.charCount(codepoint);
Character.UnicodeScript us = Character.UnicodeScript.of(codepoint);
if (us.equals(Character.UnicodeScript.COMMON))
continue;
if (script == null)
script = us;
else if (!us.equals(script))
return false;
}
return true;
}
// Files
static String sanitizeFilename(String name) {