1gnutls_x509_crt_get_extension_by_oid(g3n)utglnsutls_x509_crt_get_extension_by_oid(3)
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6 gnutls_x509_crt_get_extension_by_oid - This function returns the speci‐
7 fied extension
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10 #include <gnutls/x509.h>
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12 int gnutls_x509_crt_get_extension_by_oid(gnutls_x509_crt_t cert, const
13 char * oid, int indx, void * buf, size_t * sizeof_buf, unsigned int *
14 critical);
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17 gnutls_x509_crt_t cert
18 should contain a gnutls_x509_crt_t structure
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20 const char * oid
21 holds an Object Identified in null terminated string
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23 int indx In case multiple same OIDs exist in the extensions, this
24 specifies which to send. Use zero 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 * sizeof_buf
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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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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39 A negative value may be returned in case of parsing error. If the cer‐
40 tificate does not contain the specified extension
41 GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE will be returned.
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44 Report bugs to <bug-gnutls@gnu.org>.
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47 Copyright © 2006 Free Software Foundation.
48 Permission is granted to make and distribute verbatim copies of this
49 manual provided the copyright notice and this permission notice are
50 preserved on all copies.
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53 The full documentation for gnutls is maintained as a Texinfo manual.
54 If the info and gnutls programs are properly installed at your site,
55 the command
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57 info gnutls
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59 should give you access to the complete manual.
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63gnutls 1.6g.n3utls_x509_crt_get_extension_by_oid(3)