gnutls_x509_crt_get_basic_constraints man page on Archlinux

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       gnutls_x509_crt_get_basic_constraints - API function

       #include <gnutls/x509.h>

       int    gnutls_x509_crt_get_basic_constraints(gnutls_x509_crt_t	 cert,
       unsigned int * critical, unsigned int * ca, int * pathlen);

       gnutls_x509_crt_t cert
		   should contain a gnutls_x509_crt_t structure

       unsigned int * critical
		   will be non-zero if the extension is marked as critical

       unsigned int * ca
		   pointer to output integer  indicating  CA  status,  may  be
		   NULL,  value is 1 if the certificate CA flag is set, 0 oth‐

       int * pathlen
		   pointer to output integer indicating path  length  (may  be
		   NULL), non-negative error codes indicate a present pathLen‐
		   Constraint field and the actual value, -1 indicate that the
		   field is absent.

       This function will read the certificate's basic constraints, and return
       the certificates CA status.  It reads the basicConstraints X.509 exten‐
       sion (

       If the certificate is a CA a positive value will be returned, or (0) if
       the certificate does not have CA flag set.  A negative error  code  may
       be returned in case of errors.  If the certificate does not contain the
       basicConstraints extension  GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE  will
       be returned.

       Report bugs to <>.
       Home page:

       Copyright © 2001-2014 Free Software Foundation, Inc..
       Copying	and  distribution  of this file, with or without modification,
       are permitted in any medium  without  royalty  provided	the  copyright
       notice and this notice are preserved.

       The  full  documentation	 for gnutls is maintained as a Texinfo manual.
       If the /usr/share/doc/gnutls/ directory does not contain the HTML  form

gnutls				     3gnutls_x509_crt_get_basic_constraints(3)

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