2019-10-31 06:39:35 +08:00
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=pod
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=head1 NAME
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X509_load_http,
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X509_http_nbio,
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X509_CRL_load_http,
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X509_CRL_http_nbio
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- certificate and CRL loading functions
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=head1 SYNOPSIS
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#include <openssl/x509.h>
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X509 *X509_load_http(const char *url, BIO *bio, BIO *rbio, int timeout);
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X509_CRL *X509_CRL_load_http(const char *url, BIO *bio, BIO *rbio, int timeout);
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#define X509_http_nbio(url)
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#define X509_CRL_http_nbio(url)
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=head1 DESCRIPTION
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X509_load_http() and X509_CRL_load_http() loads a certificate or a CRL,
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respectively, in ASN.1 format using HTTP from the given B<url>.
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If B<bio> is given and B<rbio> is NULL then this BIO is used instead of an
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2020-04-26 05:57:00 +08:00
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internal one for connecting, writing the request, and reading the response.
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2019-10-31 06:39:35 +08:00
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If both B<bio> and B<rbio> are given (which may be memory BIOs, for instance)
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then no explicit connection is attempted,
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B<bio> is used for writing the request, and B<rbio> for reading the response.
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If the B<timeout> parameter is > 0 this indicates the maximum number of seconds
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to wait until the transfer is complete.
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A value of 0 enables waiting indefinitely,
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while a value < 0 immediately leads to a timeout condition.
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X509_http_nbio() and X509_CRL_http_nbio() are macros for backward compatibility
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that have the same effect as the functions above but with infinite timeout
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2020-04-26 05:57:00 +08:00
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and without the possibility to specify custom BIOs.
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2019-10-31 06:39:35 +08:00
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=head1 RETURN VALUES
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On success the function yield the loaded value, else NULL.
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Error conditions include connection/transfer timeout, parse errors, etc.
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=head1 SEE ALSO
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L<OSSL_HTTP_get_asn1(3)>
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=head1 HISTORY
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X509_load_http() and X509_CRL_load_http() were added in OpenSSL 3.0.
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=head1 COPYRIGHT
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Copyright 2019-2020 The OpenSSL Project Authors. All Rights Reserved.
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Licensed under the Apache License 2.0 (the "License"). You may not use
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this file except in compliance with the License. You can obtain a copy
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in the file LICENSE in the source distribution or at
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L<https://www.openssl.org/source/license.html>.
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=cut
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