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25cf949fc6
This adds OSSL_ENCODER_to_data() and OSSL_DECODER_from_data(). These functions allow fairly simple rewrites of type-specific i2d and d2i calls. Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org> (Merged from https://github.com/openssl/openssl/pull/13094)
74 lines
1.9 KiB
Plaintext
74 lines
1.9 KiB
Plaintext
=pod
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=head1 NAME
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OSSL_DECODER_from_data,
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OSSL_DECODER_from_bio,
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OSSL_DECODER_from_fp
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- Routines to perform a decoding
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=head1 SYNOPSIS
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#include <openssl/decoder.h>
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int OSSL_DECODER_from_bio(OSSL_DECODER_CTX *ctx, BIO *in);
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int OSSL_DECODER_from_fp(OSSL_DECODER_CTX *ctx, FILE *fp);
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int OSSL_DECODER_from_data(OSSL_DECODER_CTX *ctx, const unsigned char **pdata,
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size_t *pdata_len);
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Feature availability macros:
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=over 4
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=item OSSL_DECODER_from_fp() is only available when B<OPENSSL_NO_STDIO>
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is undefined.
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=back
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=head1 DESCRIPTION
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OSSL_DECODER_from_data() runs the decoding process for the context I<ctx>,
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with input coming from I<*pdata>, I<*pdata_len> bytes long. Both I<*pdata>
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and I<*pdata_len> must be non-NULL. When OSSL_DECODER_from_data() returns,
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I<*pdata> is updated to point at the location after what has been decoded,
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and I<*pdata_len> to have the number of remaining bytes.
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OSSL_DECODER_from_bio() runs the decoding process for the context I<ctx>,
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with the input coming from the B<BIO> I<in>. Should it make a difference,
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it's recommended to have the BIO set in binary mode rather than text mode.
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OSSL_DECODER_from_fp() does the same thing as OSSL_DECODER_from_bio(),
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except that the input is coming from the B<FILE> I<fp>.
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=head1 RETURN VALUES
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OSSL_DECODER_from_bio() and OSSL_DECODER_from_fp() return 1 on success, or 0
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on failure.
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=begin comment TODO(3.0) Add examples!
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=head1 EXAMPLES
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Text, because pod2xxx doesn't like empty sections
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=end comment
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=head1 SEE ALSO
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L<provider(7)>, L<OSSL_DECODER_CTX(3)>
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=head1 HISTORY
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The functions described here were added in OpenSSL 3.0.
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=head1 COPYRIGHT
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Copyright 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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