gnutls_x509_crt_get_extension_by_oid(3)

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

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

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

45       Report bugs to <bugs@gnutls.org>.
46       Home page: https://www.gnutls.org
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COPYRIGHT

50       Copyright © 2001-2019 Free Software Foundation, Inc., and others.
51       Copying and distribution of this file, with  or  without  modification,
52       are  permitted  in  any  medium  without royalty provided the copyright
53       notice and this notice are preserved.
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