1=pod
2
3=head1 NAME
4
5X509_load_http,
6X509_http_nbio,
7X509_CRL_load_http,
8X509_CRL_http_nbio
9- certificate and CRL loading functions
10
11=head1 SYNOPSIS
12
13 #include <openssl/x509.h>
14
15 X509 *X509_load_http(const char *url, BIO *bio, BIO *rbio, int timeout);
16 X509_CRL *X509_CRL_load_http(const char *url, BIO *bio, BIO *rbio, int timeout);
17
18The following macros have been deprecated since OpenSSL 3.0, and can be
19hidden entirely by defining B<OPENSSL_API_COMPAT> with a suitable version value,
20see L<openssl_user_macros(7)>:
21
22 #define X509_http_nbio(rctx, pcert)
23 #define X509_CRL_http_nbio(rctx, pcrl)
24
25=head1 DESCRIPTION
26
27X509_load_http() and X509_CRL_load_http() loads a certificate or a CRL,
28respectively, in ASN.1 format using HTTP from the given B<url>.
29
30If B<bio> is given and B<rbio> is NULL then this BIO is used instead of an
31internal one for connecting, writing the request, and reading the response.
32If both B<bio> and B<rbio> are given (which may be memory BIOs, for instance)
33then no explicit connection is attempted,
34B<bio> is used for writing the request, and B<rbio> for reading the response.
35
36If the B<timeout> parameter is > 0 this indicates the maximum number of seconds
37to wait until the transfer is complete.
38A value of 0 enables waiting indefinitely,
39while a value < 0 immediately leads to a timeout condition.
40
41X509_http_nbio() and X509_CRL_http_nbio() are macros for backward compatibility
42that have the same effect as the functions above but with infinite timeout
43and without the possibility to specify custom BIOs.
44
45=head1 RETURN VALUES
46
47On success the function yield the loaded value, else NULL.
48Error conditions include connection/transfer timeout, parse errors, etc.
49
50=head1 SEE ALSO
51
52L<OSSL_HTTP_get(3)>
53
54=head1 HISTORY
55
56X509_load_http() and X509_CRL_load_http() were added in OpenSSL 3.0.
57X509_http_nbio() and X509_CRL_http_nbio() were deprecated in OpenSSL 3.0.
58
59=head1 COPYRIGHT
60
61Copyright 2019-2021 The OpenSSL Project Authors. All Rights Reserved.
62
63Licensed under the Apache License 2.0 (the "License").  You may not use
64this file except in compliance with the License.  You can obtain a copy
65in the file LICENSE in the source distribution or at
66L<https://www.openssl.org/source/license.html>.
67
68=cut
69