Change to JackTools::GetUID() on Windows that fixes metadata #991
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creating a new BDB on every API call. JackTools::GetUID() would return the PID of the calling process. (I think this was a stub because there is no Windows equivalent). The linux version appears to return a linux UID. This patch does something similar on Windows so as to create/open the same DB on Windows.
imaami
suggested changes
Dec 25, 2024
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A few things should be fixed. For completeness' sake here's my suggestion:
int JackTools::GetUID()
{
#ifdef WIN32
int id = 0;
HANDLE tokenHandle = nullptr;
if (OpenProcessToken(GetCurrentProcess(), TOKEN_QUERY, &tokenHandle)) {
TOKEN_STATISTICS tokenStats{};
DWORD len = sizeof tokenStats;
if (GetTokenInformation(tokenHandle, TokenStatistics,
&tokenStats, sizeof tokenStats, &len)) {
id = static_cast<int>(tokenStats.AuthenticationId.LowPart);
}
CloseHandle(tokenHandle);
}
return id;
#else
return geteuid();
#endif
}| } | ||
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| TOKEN_STATISTICS tokenStats; | ||
| DWORD returnLength; |
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Initialize tokenStats and returnLength:
TOKEN_STATISTICS tokenStats{};
DWORD returnLength = sizeof tokenStats;| TOKEN_STATISTICS tokenStats; | ||
| DWORD returnLength; | ||
| if (!GetTokenInformation(tokenHandle, TokenStatistics, &tokenStats, sizeof(tokenStats), &returnLength)) { | ||
| CloseHandle(tokenHandle); |
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You're only closing the handle if GetTokenInformation() succeeds, it should be closed every time.
| return 0; | ||
| } | ||
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| return(tokenStats.AuthenticationId.LowPart); |
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Nitpick: return is not a function call, don't make it look like one.
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Change to JackTools::GetUID() on Windows that fixes metadata creating a new BDB on every API call.
JackTools::GetUID() would return the PID of the calling process. (I think this was a stub because there is no Windows equivalent). The linux version appears to return a linux UID. This patch does something similar on Windows so as to create/open the same DB on Windows and metadata now works correctly.