1gnutls_x509_crt_get_extension_info(3)gnutlsgnutls_x509_crt_get_extension_info(3)
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6 gnutls_x509_crt_get_extension_info - API function
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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 * oid_size, unsigned int * critical);
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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 (0) 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 * oid_size
24 initially holds the maximum size of oid , on return holds
25 actual size of oid .
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27 unsigned int * critical
28 output variable with critical flag, may be NULL.
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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() to extract the data.
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36 If the buffer provided is not long enough to hold the output, then
37 oid_size is updated and GNUTLS_E_SHORT_MEMORY_BUFFER will be returned.
38 The oid returned will be null terminated, although
39 oid_size will not account for the trailing null.
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42 On success, GNUTLS_E_SUCCESS (0) is returned, otherwise a negative
43 error code is returned. If you have reached the last extension avail‐
44 able GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE will be returned.
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47 Report bugs to <bugs@gnutls.org>.
48 Home page: http://www.gnutls.org
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52 Copyright © 2001-2014 Free Software Foundation, Inc..
53 Copying and distribution of this file, with or without modification,
54 are permitted in any medium without royalty provided the copyright
55 notice and this notice are preserved.
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58 The full documentation for gnutls is maintained as a Texinfo manual.
59 If the /usr/share/doc/gnutls/ directory does not contain the HTML form
60 visit
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62 http://www.gnutls.org/manual/
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64gnutls 3.3.29gnutls_x509_crt_get_extension_info(3)