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Force punycode display for IDNs with a <dotless-i/j, combining mark above> sequence.

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This commit is contained in:
wolfbeast 2017-11-21 11:13:05 +01:00 • committed by Roy Tam
commit 490fdb990a
1 changed files with 14 additions and 5 deletions
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19
netwerk/dns/nsIDNService.cpp
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@ -797,6 +797,7 @@ bool nsIDNService::isLabelSafe(const nsAString &label)
Script lastScript = Script::INVALID; Script lastScript = Script::INVALID;
uint32_t previousChar = 0; uint32_t previousChar = 0;
uint32_t baseChar = 0; // last non-diacritic seen (base char for marks)
uint32_t savedNumberingSystem = 0; uint32_t savedNumberingSystem = 0;
// Simplified/Traditional Chinese check temporarily disabled -- bug 857481 // Simplified/Traditional Chinese check temporarily disabled -- bug 857481
#if 0 #if 0
@ -846,11 +847,19 @@ bool nsIDNService::isLabelSafe(const nsAString &label)
} }
} }
// Check for consecutive non-spacing marks if (GetGeneralCategory(ch) == HB_UNICODE_GENERAL_CATEGORY_NON_SPACING_MARK) {
if (previousChar != 0 && // Check for consecutive non-spacing marks
previousChar == ch && if (previousChar != 0 && previousChar == ch) {
GetGeneralCategory(ch) == HB_UNICODE_GENERAL_CATEGORY_NON_SPACING_MARK) { return false;
return false; }
// Check for diacritics on dotless-i or dotless-j, which would be
// indistinguishable from normal accented letter.
if ((baseChar == 0x0237 || baseChar == 0x0131) &&
((ch >= 0x0300 && ch <= 0x0314) || ch == 0x031a)) {
return false;
}
} else {
baseChar = ch;
} }
// Simplified/Traditional Chinese check temporarily disabled -- bug 857481 // Simplified/Traditional Chinese check temporarily disabled -- bug 857481