1gnutls_x509_crt_get_extension_info(3)gnutlsgnutls_x509_crt_get_extension_info(3)
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NAME

6       gnutls_x509_crt_get_extension_info - API function
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SYNOPSIS

9       #include <gnutls/x509.h>
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11       int   gnutls_x509_crt_get_extension_info(gnutls_x509_crt_t   cert,  int
12       indx, void * oid, size_t * sizeof_oid, int * critical);
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ARGUMENTS

15       gnutls_x509_crt_t cert
16                   should contain a gnutls_x509_crt_t structure
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18       int indx    Specifies which extension OID to send. Use zero to get  the
19                   first one.
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21       void * oid  a pointer to a structure to hold the OID
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23       size_t * sizeof_oid
24                   initially  holds  the  maximum size of oid, on return holds
25                   actual size of oid.
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27       int * critical
28                   output variable with critical flag, may be NULL.
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DESCRIPTION

31       This function will return the requested extension OID in  the  certifi‐
32       cate,  and  the critical flag for it.  The extension OID will be stored
33       as a string in the  provided  buffer.   Use  gnutls_x509_crt_get_exten‐
34       sion_data() to extract the data.
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36       If  the  buffer  provided  is  not long enough to hold the output, then
37       *sizeof_oid  is  updated  and  GNUTLS_E_SHORT_MEMORY_BUFFER   will   be
38       returned.
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RETURNS

41       On  success,  GNUTLS_E_SUCCESS  (zero)  is returned, otherwise an error
42       code is returned.  If you have reached  the  last  extension  available
43       GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE will be returned.
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REPORTING BUGS

46       Report    bugs    to    <bug-gnutls@gnu.org>.     GnuTLS   home   page:
47       http://www.gnu.org/software/gnutls/ General help  using  GNU  software:
48       http://www.gnu.org/gethelp/
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51       Copyright © 2008 Free Software Foundation.
52       Copying  and  distribution  of this file, with or without modification,
53       are permitted in any medium  without  royalty  provided  the  copyright
54       notice and this notice are preserved.
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SEE ALSO

57       The  full  documentation  for gnutls is maintained as a Texinfo manual.
58       If the info and gnutls programs are properly installed  at  your  site,
59       the command
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61              info gnutls
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63       should give you access to the complete manual.
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67gnutls                             2.12.6.g1nutls_x509_crt_get_extension_info(3)
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