mirror of
https://github.com/openssl/openssl.git
synced 2024-11-27 05:21:51 +08:00
b97fdb57a2
Reviewed-by: Rich Salz <rsalz@openssl.org> (Merged from https://github.com/openssl/openssl/pull/1900)
75 lines
2.3 KiB
Plaintext
75 lines
2.3 KiB
Plaintext
=pod
|
|
|
|
=head1 NAME
|
|
|
|
ERR_error_string, ERR_error_string_n, ERR_lib_error_string,
|
|
ERR_func_error_string, ERR_reason_error_string - obtain human-readable
|
|
error message
|
|
|
|
=head1 SYNOPSIS
|
|
|
|
#include <openssl/err.h>
|
|
|
|
char *ERR_error_string(unsigned long e, char *buf);
|
|
void ERR_error_string_n(unsigned long e, char *buf, size_t len);
|
|
|
|
const char *ERR_lib_error_string(unsigned long e);
|
|
const char *ERR_func_error_string(unsigned long e);
|
|
const char *ERR_reason_error_string(unsigned long e);
|
|
|
|
=head1 DESCRIPTION
|
|
|
|
ERR_error_string() generates a human-readable string representing the
|
|
error code I<e>, and places it at I<buf>. I<buf> must be at least 256
|
|
bytes long. If I<buf> is B<NULL>, the error string is placed in a
|
|
static buffer.
|
|
Note that this function is not thread-safe and does no checks on the size
|
|
of the buffer; use ERR_error_string_n() instead.
|
|
|
|
ERR_error_string_n() is a variant of ERR_error_string() that writes
|
|
at most I<len> characters (including the terminating 0)
|
|
and truncates the string if necessary.
|
|
For ERR_error_string_n(), I<buf> may not be B<NULL>.
|
|
|
|
The string will have the following format:
|
|
|
|
error:[error code]:[library name]:[function name]:[reason string]
|
|
|
|
I<error code> is an 8 digit hexadecimal number, I<library name>,
|
|
I<function name> and I<reason string> are ASCII text.
|
|
|
|
ERR_lib_error_string(), ERR_func_error_string() and
|
|
ERR_reason_error_string() return the library name, function
|
|
name and reason string respectively.
|
|
|
|
If there is no text string registered for the given error code,
|
|
the error string will contain the numeric code.
|
|
|
|
L<ERR_print_errors(3)> can be used to print
|
|
all error codes currently in the queue.
|
|
|
|
=head1 RETURN VALUES
|
|
|
|
ERR_error_string() returns a pointer to a static buffer containing the
|
|
string if I<buf> B<== NULL>, I<buf> otherwise.
|
|
|
|
ERR_lib_error_string(), ERR_func_error_string() and
|
|
ERR_reason_error_string() return the strings, and B<NULL> if
|
|
none is registered for the error code.
|
|
|
|
=head1 SEE ALSO
|
|
|
|
L<err(7)>, L<ERR_get_error(3)>,
|
|
L<ERR_print_errors(3)>
|
|
|
|
=head1 COPYRIGHT
|
|
|
|
Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.
|
|
|
|
Licensed under the OpenSSL license (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
|
|
L<https://www.openssl.org/source/license.html>.
|
|
|
|
=cut
|