gnutls_x509_crt_get_extension_info man page on Archlinux

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       gnutls_x509_crt_get_extension_info - API function

       #include <gnutls/x509.h>

       int   gnutls_x509_crt_get_extension_info(gnutls_x509_crt_t   cert,  int
       indx, void * oid, size_t * oid_size, unsigned int * critical);

       gnutls_x509_crt_t cert
		   should contain a gnutls_x509_crt_t structure

       int indx	   Specifies which extension OID to send. Use (0) to  get  the
		   first one.

       void * oid  a pointer to a structure to hold the OID

       size_t * oid_size
		   initially  holds the maximum size of	 oid , on return holds
		   actual size of  oid .

       unsigned int * critical
		   output variable with critical flag, may be NULL.

       This function will return the requested extension OID in	 the  certifi‐
       cate,  and  the critical flag for it.  The extension OID will be stored
       as a string in the  provided  buffer.   Use  gnutls_x509_crt_get_exten‐
       sion() to extract the data.

       If the buffer provided is not long enough to hold the output, then
	oid_size is updated and GNUTLS_E_SHORT_MEMORY_BUFFER will be returned.
       The  oid returned will be null terminated, although
	oid_size will not account for the trailing null.

       On success, GNUTLS_E_SUCCESS (0)	 is  returned,	otherwise  a  negative
       error  code is returned.	 If you have reached the last extension avail‐
       able 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				     3.3.gnutls_x509_crt_get_extension_info(3)

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