1gnutls_certificate_client_setg_nruettlrsi_ecvgeenr_utftiulfnsicctaitoen_(c3l)ient_set_retrieve_function(3)
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NAME

6       gnutls_certificate_client_set_retrieve_function - API function
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SYNOPSIS

9       #include <gnutls/gnutls.h>
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11       void    gnutls_certificate_client_set_retrieve_function(gnutls_certifi‐
12       cate_credentials_t cred, gnutls_certificate_client_retrieve_function  *
13       func);
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ARGUMENTS

16       gnutls_certificate_credentials_t cred
17                   is a gnutls_certificate_credentials_t structure.
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19       gnutls_certificate_client_retrieve_function * func
20                   is the callback function
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DESCRIPTION

23       This  function  sets  a  callback to be called in order to retrieve the
24       certificate to be used in the handshake.
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26       The callback's function prototype is: int (*callback)(gnutls_session_t,
27       const  gnutls_datum_t*  req_ca_dn,  int  nreqs,  const  gnutls_pk_algo‐
28       rithm_t* pk_algos, int pk_algos_length, gnutls_retr_st* st);
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30       req_ca_cert is only used in X.509 certificates.  Contains a  list  with
31       the  CA  names  that  the server considers trusted.  Normally we should
32       send a certificate that is signed by one of these CAs. These names  are
33       DER   encoded.  To  get  a  more  meaningful  value  use  the  function
34       gnutls_x509_rdn_get().
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36       pk_algos contains a list with server's acceptable signature algorithms.
37       The certificate returned should support the server's given algorithms.
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39       st should contain the certificates and private keys.
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41       If  the  callback function is provided then gnutls will call it, in the
42       handshake, after the certificate request message has been received.
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44       The callback function should set the certificate list to be  sent,  and
45       return  0 on success. If no certificate was selected then the number of
46       certificates should be set to zero. The value (-1) indicates error  and
47       the handshake will be terminated.
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REPORTING BUGS

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

61       The  full  documentation  for gnutls is maintained as a Texinfo manual.
62       If the info and gnutls programs are properly installed  at  your  site,
63       the command
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65              info gnutls
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67       should give you access to the complete manual.
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71gnutls                      gnutls_2c.e1r2t.i6f.i1cate_client_set_retrieve_function(3)
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