wuggy/Dactyloidae
wuggy/Dactyloidae
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import changes from tenfourfox:

Browse source 
- #622: update brotli to 1.0.9, woff2 to tip (7c24b77e7)
- #622: actually add new brotli files (fc50954e6)
This commit is contained in:
roytam1 2020-09-19 07:32:30 +08:00
commit 1bdcd46977
64 changed files with 3990 additions and 2780 deletions
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19
modules/woff2/src/woff2_dec.cc
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@ -111,6 +111,16 @@ int WithSign(int flag, int baseval) {
return (flag & 1) ? baseval : -baseval;
}
bool _SafeIntAddition(int a, int b, int* result) {
if (PREDICT_FALSE(
((a > 0) && (b > std::numeric_limits<int>::max() - a)) ||
((a < 0) && (b < std::numeric_limits<int>::min() - a)))) {
return false;
}
*result = a + b;
return true;
}
bool TripletDecode(const uint8_t* flags_in, const uint8_t* in, size_t in_size,
unsigned int n_points, Point* result, size_t* in_bytes_consumed) {
int x = 0;
@ -166,9 +176,12 @@ bool TripletDecode(const uint8_t* flags_in, const uint8_t* in, size_t in_size,
(in[triplet_index + 2] << 8) + in[triplet_index + 3]);
}
triplet_index += n_data_bytes;
// Possible overflow but coordinate values are not security sensitive
x += dx;
y += dy;
if (!_SafeIntAddition(x, dx, &x)) {
return false;
}
if (!_SafeIntAddition(y, dy, &y)) {
return false;
}
*result++ = {x, y, on_curve};
}
*in_bytes_consumed = triplet_index;