Liberator Auth API
7.0.4.309504
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Functions | |
char * | object_get_value (object_t *obj, int32_t fieldnum, char *buf, int len) |
The function returns the value of a specified field in an object. More... | |
Content-based permissioning works by allowing users to see an object only if the object contains a certain value in one of its fields, as opposed to subject-based permissioning, which allows users to see an object based on the symbol name.
Example to illustrate content based permissioning
char* object_get_value | ( | object_t * | obj, |
int32_t | fieldnum, | ||
char * | buf, | ||
int | len | ||
) |
The function returns the value of a specified field in an object.
obj | The RTTP object |
fieldnum | The number of the field |
buf | Buffer to store the value |
len | Length of the buffer |
NULL | - The field does not exist |
buffer | - buffer contains the field value |
By calling object_get_value() in _authfuncs::auth_check_read(), you can find the value of a particular field. However, if working with an active source, it is possible that the value may be unavailable (i.e. object->type for the value is 200). In such circumstances, _authfuncs::auth_check_read() may return AUTH_AGAIN and _authfuncs::auth_check_read() will be called again when the first update is received.