56 lines
998 B
C
Executable File
56 lines
998 B
C
Executable File
#include <hwo/access.h>
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#include <hwo/bits.h>
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/**
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* @defgroup hwo_core Core-Funktionen des hwo-Systems
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* @brief Core-Funktionen.
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*
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* @{
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*/
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/**
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* @defgroup hwo_core_auth Zugriffsauthorisierung
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* @brief Zugriffsauthorisierung.
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*
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* @{
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*/
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/*! \brief Prüfen der Zugriffsberechtigung.
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*
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* Prüft Format der übergebenen Struct access und liefert
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* Zugriffsrechte oder Null zurück. Setzt effective_rights-Feld
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*/
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int32_t access_authorize(struct _access* access)
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{
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union bits32 bits;
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int32_t ac;
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if (!access)
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return 0;
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ac = access->access_code;
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bits.i32 = access->service_partner_id;
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bits.i32 = rol32(bits.i32,13);
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bits.i32 ^= access->staff_id;
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bits.i32 = rol32(bits.i32,23);
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bits.i32 ^= ac;
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bits.i32 = rol32(bits.i32,5);
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bits.i32 ^= access->magic1;
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bits.i32 = rol32(bits.i32,27);
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bits.i32 ^= access->passcode;
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if (bits.i32)
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access->effective_rights = 0;
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else
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access->effective_rights = ac;
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return access->effective_rights;
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};
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/** @}
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*/
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/** @}
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*/
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