X509V3_EXT_PRINT(3SSL) OpenSSL X509V3_EXT_PRINT(3SSL)
NAME
X509V3_EXT_print, X509V3_EXT_print_fp - pretty print X509 certificate
extensions
SYNOPSIS
#include <openssl/x509v3.h>
int X509V3_EXT_print(BIO *out, X509_EXTENSION *ext, unsigned long flag, int indent);
int X509V3_EXT_print_fp(FILE *out, X509_EXTENSION *ext, int flag, int indent);
DESCRIPTION
X509V3_EXT_print() and X509V3_EXT_print_fp() parse and print the
extension info from ext to bio or out with indentation set via indent.
flag determines the behaviour if an extension could not be parsed and
can be one of: X509V3_EXT_DEFAULT (equivalent to 0): an unknown or
unparsable extension stops the parsing and the function returns a
failure. X509V3_EXT_PARSE_UNKNOWN: an unknown or unparsable extension
is handled by printing it through the ASN1_parse_dump() function, and
the function returns success. X509V3_EXT_DUMP_UNKNOWN: an unknown or
unparsable extension is handled by printing it through the
BIO_dump_indent() function, and the function returns success,
X509V3_EXT_ERROR_UNKNOWN: an unknown or unparsable extension is handled
by printing either "<Not Supported>" or "<Parse Error>", and the
function returns success.
RETURN VALUES
X509V3_EXT_print() and X509V3_EXT_print_fp() return 1 for success and 0
for failure.
SEE ALSO
BIO_dump_indent(3), ASN1_parse_dump(3),
COPYRIGHT
Copyright 2026 The OpenSSL Project Authors. All Rights Reserved.
Licensed under the Apache License 2.0 (the "License"). You may not use
this file except in compliance with the License. You can obtain a copy
in the file LICENSE in the source distribution or at
<https://www.openssl.org/source/license.html>.
3.5.7 2026-06-09 X509V3_EXT_PRINT(3SSL)
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