62 lines
1.2 KiB
C
62 lines
1.2 KiB
C
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// auto_sid.h
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//
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#pragma once
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class auto_sid
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{
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public:
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explicit auto_sid(SID* p = 0)
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: m_psid(p) {};
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auto_sid(auto_sid& rhs)
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: m_psid(rhs.release()) {};
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~auto_sid()
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{ if (m_psid) FreeSid(m_psid); };
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auto_sid& operator= (auto_sid& rhs)
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{ if (this != rhs.getThis())
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reset (rhs.release() );
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return *this;
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};
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SID operator*() const
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{ return *m_psid; };
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void** operator& ()
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{ reset(); return (void**)&m_psid; };
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operator SID* ()
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{ return m_psid; };
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// Checks for NULL
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BOOL operator== (LPVOID lpv)
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{ return m_psid == lpv; };
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BOOL operator!= (LPVOID lpv)
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{ return m_psid != lpv; };
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// return value of current dumb pointer
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SID* get() const
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{ return m_psid; };
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// relinquish ownership
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SID* release()
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{ SID* oldpsid = m_psid;
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m_psid = 0;
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return oldpsid;
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};
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// delete owned pointer; assume ownership of p
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void reset (SID* p = 0)
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{
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if (m_psid)
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FreeSid(m_psid);
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m_psid = p;
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};
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private:
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// operator& throws off operator=
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const auto_sid* getThis() const
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{ return this; };
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SID* m_psid;
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};
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