Blame doc/functions/gnutls_x509_crt_get_basic_constraints
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@deftypefun {int} {gnutls_x509_crt_get_basic_constraints} (gnutls_x509_crt_t @var{cert}, unsigned int * @var{critical}, unsigned int * @var{ca}, int * @var{pathlen})
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@var{cert}: should contain a @code{gnutls_x509_crt_t} type
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@var{critical}: will be non-zero if the extension is marked as critical
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@var{ca}: pointer to output integer indicating CA status, may be NULL,
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value is 1 if the certificate CA flag is set, 0 otherwise.
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@var{pathlen}: pointer to output integer indicating path length (may be
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NULL), non-negative error codes indicate a present pathLenConstraint
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field and the actual value, -1 indicate that the field is absent.
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This function will read the certificate's basic constraints, and
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return the certificates CA status. It reads the basicConstraints
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X.509 extension (2.5.29.19).
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@strong{Returns:} If the certificate is a CA a positive value will be
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returned, or (0) if the certificate does not have CA flag set. A
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negative error code may be returned in case of errors. If the
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certificate does not contain the basicConstraints extension
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GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE will be returned.
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@end deftypefun
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