1gnutls_x509_crt_get_extension_by_oid(g3n)utglnsutls_x509_crt_get_extension_by_oid(3)
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NAME

6       gnutls_x509_crt_get_extension_by_oid - API function
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SYNOPSIS

9       #include <gnutls/x509.h>
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11       int  gnutls_x509_crt_get_extension_by_oid(gnutls_x509_crt_t cert, const
12       char * oid, int indx, void * buf, size_t *  buf_size,  unsigned  int  *
13       critical);
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ARGUMENTS

16       gnutls_x509_crt_t cert
17                   should contain a gnutls_x509_crt_t structure
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19       const char * oid
20                   holds an Object Identified in null terminated string
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22       int indx    In  case  multiple  same OIDs exist in the extensions, this
23                   specifies which to send. Use (0) to get the first one.
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25       void * buf  a pointer to a structure to hold the name (may be null)
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27       size_t * buf_size
28                   initially holds the size of  buf
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30       unsigned int * critical
31                   will be non-zero if the extension is marked as critical
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DESCRIPTION

34       This function will return the extension specified by  the  OID  in  the
35       certificate.   The  extensions  will  be  returned  as  binary data DER
36       encoded, in the provided buffer.
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RETURNS

39       On success, GNUTLS_E_SUCCESS (0)  is  returned,  otherwise  a  negative
40       error  code is returned. If the certificate does not contain the speci‐
41       fied extension GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE will be returned.
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REPORTING BUGS

44       Report bugs to <bugs@gnutls.org>.
45       Home page: http://www.gnutls.org
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49       Copyright © 2001-2014 Free Software Foundation, Inc..
50       Copying and distribution of this file, with  or  without  modification,
51       are  permitted  in  any  medium  without royalty provided the copyright
52       notice and this notice are preserved.
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SEE ALSO

55       The full documentation for gnutls is maintained as  a  Texinfo  manual.
56       If  the /usr/share/doc/gnutls/ directory does not contain the HTML form
57       visit
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59       http://www.gnutls.org/manual/
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61gnutls                              3.3.g2n9utls_x509_crt_get_extension_by_oid(3)
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