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Verify the amount of string space we have to replace the zip extension

This commit is contained in:
rh101 2021-04-25 12:15:56 +10:00
parent 2cdd688166
commit 521e2cad4c
1 changed files with 4 additions and 3 deletions
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7
cocos/base/ZipUtils.cpp
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@ -569,9 +569,10 @@ voidpf ZipFile_opendisk_file_func(voidpf opaque, voidpf stream, uint32_t number_
if (pos != std::string::npos && pos != 0)
{
auto* extensionBuffer = new char[5];
snprintf(&extensionBuffer[0], 5, ".z%02u", number_disk + 1);
diskFilename.replace(pos, 4, extensionBuffer);
const size_t bufferSize = 5;
char extensionBuffer[bufferSize];
snprintf(&extensionBuffer[0], bufferSize, ".z%02u", number_disk + 1);
diskFilename.replace(pos, std::min((size_t)4, zipFileInfo->zipFileName.size() - pos), extensionBuffer);
delete[] extensionBuffer;
return ZipFile_open_file_func(opaque, diskFilename.c_str(), mode);
}