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Adding a check for reverse overflow when extensions is longer than filename

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This commit is contained in:
Nathan Woods 2016-07-11 10:46:36 -04:00
parent 0e4cb93bc5
commit 32230ae648
1 changed files with 2 additions and 2 deletions
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4
src/lib/util/corefile.cpp
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@ -1300,8 +1300,8 @@ bool core_filename_ends_with(const std::string &filename, const std::string &ext
auto extlen = extension.length(); auto extlen = extension.length();
bool matches = true; bool matches = true;
/* work backwards checking for a match */ // work backwards checking for a match
while (extlen > 0) while (extlen > 0 && namelen > 0)
if (tolower((UINT8)filename[--namelen]) != tolower((UINT8)extension[--extlen])) if (tolower((UINT8)filename[--namelen]) != tolower((UINT8)extension[--extlen]))
{ {
matches = false; matches = false;