1=pod
2
3=head1 NAME
4
5SSL_CTX_get0_param, SSL_get0_param, SSL_CTX_set1_param, SSL_set1_param -
6get and set verification parameters
7
8=head1 SYNOPSIS
9
10 #include <openssl/ssl.h>
11
12 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
13 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
14 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
15 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
16
17=head1 DESCRIPTION
18
19SSL_CTX_get0_param() and SSL_get0_param() retrieve an internal pointer to
20the verification parameters for B<ctx> or B<ssl> respectively. The returned
21pointer must not be freed by the calling application.
22
23SSL_CTX_set1_param() and SSL_set1_param() set the verification parameters
24to B<vpm> for B<ctx> or B<ssl>.
25
26=head1 NOTES
27
28Typically parameters are retrieved from an B<SSL_CTX> or B<SSL> structure
29using SSL_CTX_get0_param() or SSL_get0_param() and an application modifies
30them to suit its needs: for example to add a hostname check.
31
32=head1 EXAMPLE
33
34Check hostname matches "www.foo.com" in peer certificate:
35
36 X509_VERIFY_PARAM *vpm = SSL_get0_param(ssl);
37 X509_VERIFY_PARAM_set1_host(vpm, "www.foo.com", 0);
38
39=head1 RETURN VALUES
40
41SSL_CTX_get0_param() and SSL_get0_param() return a pointer to an
42B<X509_VERIFY_PARAM> structure.
43
44SSL_CTX_set1_param() and SSL_set1_param() return 1 for success and 0
45for failure.
46
47=head1 SEE ALSO
48
49L<X509_VERIFY_PARAM_set_flags(3)|X509_VERIFY_PARAM_set_flags(3)>
50
51=head1 HISTORY
52
53These functions were first added to OpenSSL 1.0.2.
54
55=cut
56