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Fix a buffer underflow in the Center function from the string library.

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This commit is contained in:
Sandu Liviu Catalin 2016-04-03 23:23:01 +03:00
parent 159e2f5929
commit ea9f60e32c
1 changed files with 3 additions and 1 deletions
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4
source/Library/String.cpp
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@ -410,10 +410,12 @@ CSStr CenterStr(CSStr s, SQChar f, Uint32 w)
{
// Calculate the string length
const Uint32 n = std::strlen(s);
// Calculate the insert position
const Int32 p = ((w/2) - (n/2));
// Insert only the fill character first
std::memset(b.Data(), f, w);
// Overwrite with the specified string
std::strncpy(b.Data() + ((w/2) - (n/2)), s, n);
std::strncpy(b.Data() + (p < 0 ? 0 : p), s, n);
}
// End the resulted string
b.At(w) = '\0';