mirror of
https://github.com/openssl/openssl.git
synced 2024-11-21 01:15:20 +08:00
143 lines
5.7 KiB
Plaintext
143 lines
5.7 KiB
Plaintext
=pod
|
|
|
|
=head1 NAME
|
|
|
|
ERR_get_error, ERR_peek_error, ERR_peek_last_error,
|
|
ERR_get_error_line, ERR_peek_error_line, ERR_peek_last_error_line,
|
|
ERR_peek_error_func, ERR_peek_last_error_func,
|
|
ERR_peek_error_data, ERR_peek_last_error_data,
|
|
ERR_get_error_all, ERR_peek_error_all, ERR_peek_last_error_all,
|
|
ERR_get_error_line_data, ERR_peek_error_line_data, ERR_peek_last_error_line_data
|
|
- obtain error code and data
|
|
|
|
=head1 SYNOPSIS
|
|
|
|
#include <openssl/err.h>
|
|
|
|
unsigned long ERR_get_error(void);
|
|
unsigned long ERR_peek_error(void);
|
|
unsigned long ERR_peek_last_error(void);
|
|
|
|
unsigned long ERR_peek_error_line(const char **file, int *line);
|
|
unsigned long ERR_peek_last_error_line(const char **file, int *line);
|
|
|
|
unsigned long ERR_peek_error_func(const char **func);
|
|
unsigned long ERR_peek_last_error_func(const char **func);
|
|
|
|
unsigned long ERR_peek_error_data(const char **data, int *flags);
|
|
unsigned long ERR_peek_last_error_data(const char **data, int *flags);
|
|
|
|
unsigned long ERR_get_error_all(const char **file, int *line,
|
|
const char **func,
|
|
const char **data, int *flags);
|
|
unsigned long ERR_peek_error_all(const char **file, int *line,
|
|
const char **func,
|
|
const char **data, int *flags);
|
|
unsigned long ERR_peek_last_error_all(const char **file, int *line,
|
|
const char *func,
|
|
const char **data, int *flags);
|
|
|
|
The following functions have been deprecated since OpenSSL 3.0, and can be
|
|
hidden entirely by defining B<OPENSSL_API_COMPAT> with a suitable version value,
|
|
see L<openssl_user_macros(7)>:
|
|
|
|
unsigned long ERR_get_error_line(const char **file, int *line);
|
|
unsigned long ERR_get_error_line_data(const char **file, int *line,
|
|
const char **data, int *flags);
|
|
unsigned long ERR_peek_error_line_data(const char **file, int *line,
|
|
const char **data, int *flags);
|
|
unsigned long ERR_peek_last_error_line_data(const char **file, int *line,
|
|
const char **data, int *flags);
|
|
|
|
=head1 DESCRIPTION
|
|
|
|
ERR_get_error() returns the earliest error code from the thread's error
|
|
queue and removes the entry. This function can be called repeatedly
|
|
until there are no more error codes to return.
|
|
|
|
ERR_peek_error() returns the earliest error code from the thread's
|
|
error queue without modifying it.
|
|
|
|
ERR_peek_last_error() returns the latest error code from the thread's
|
|
error queue without modifying it.
|
|
|
|
See L<ERR_GET_LIB(3)> for obtaining further specific information
|
|
such as the reason of the error,
|
|
and L<ERR_error_string(3)> for human-readable error messages.
|
|
|
|
ERR_get_error_all() is the same as ERR_get_error(), but on success it
|
|
additionally stores the filename, line number and function where the error
|
|
occurred in *I<file>, *I<line> and *I<func>, and also extra text and flags
|
|
in *I<data>, *I<flags>. If any of those parameters are NULL, it will not
|
|
be changed.
|
|
An unset filename is indicated as "", i.e. an empty string.
|
|
An unset line number is indicated as 0.
|
|
An unset function name is indicated as "", i.e. an empty string.
|
|
|
|
A pointer returned this way by these functions and the ones below
|
|
is valid until the respective entry is overwritten in the error queue.
|
|
|
|
ERR_peek_error_line() and ERR_peek_last_error_line() are the same as
|
|
ERR_peek_error() and ERR_peek_last_error(), but on success they additionally
|
|
store the filename and line number where the error occurred in *I<file> and
|
|
*I<line>, as far as they are not NULL.
|
|
An unset filename is indicated as "", i.e., an empty string.
|
|
An unset line number is indicated as 0.
|
|
|
|
ERR_peek_error_func() and ERR_peek_last_error_func() are the same as
|
|
ERR_peek_error() and ERR_peek_last_error(), but on success they additionally
|
|
store the name of the function where the error occurred in *I<func>, unless
|
|
it is NULL.
|
|
An unset function name is indicated as "".
|
|
|
|
ERR_peek_error_data() and ERR_peek_last_error_data() are the same as
|
|
ERR_peek_error() and ERR_peek_last_error(), but on success they additionally
|
|
store additional data and flags associated with the error code in *I<data>
|
|
and *I<flags>, as far as they are not NULL.
|
|
Unset data is indicated as "".
|
|
In this case the value given for the flag is irrelevant (and equals 0).
|
|
*I<data> contains a string if *I<flags>&B<ERR_TXT_STRING> is true.
|
|
|
|
ERR_peek_error_all() and ERR_peek_last_error_all() are combinations of all
|
|
of the above.
|
|
|
|
ERR_get_error_line(), ERR_get_error_line_data(), ERR_peek_error_line_data()
|
|
and ERR_peek_last_error_line_data() are older variants of ERR_get_error_all(),
|
|
ERR_peek_error_all() and ERR_peek_last_error_all(), and may give confusing
|
|
results. They should no longer be used and are therefore deprecated.
|
|
|
|
An application B<MUST NOT> free the *I<data> pointer (or any other pointers
|
|
returned by these functions) with OPENSSL_free() as freeing is handled
|
|
automatically by the error library.
|
|
|
|
=head1 RETURN VALUES
|
|
|
|
The error code, or 0 if there is no error in the queue.
|
|
|
|
=head1 SEE ALSO
|
|
|
|
L<ERR_error_string(3)>,
|
|
L<ERR_GET_LIB(3)>
|
|
|
|
=head1 HISTORY
|
|
|
|
ERR_peek_error_func(), ERR_peek_last_error_func(),
|
|
ERR_peek_error_data(), ERR_peek_last_error_data(),
|
|
ERR_peek_error_all() and ERR_peek_last_error_all()
|
|
were added in OpenSSL 3.0.
|
|
|
|
ERR_get_error_line(), ERR_get_error_line_data(), ERR_peek_error_line_data()
|
|
and ERR_peek_last_error_line_data() became deprecated in OpenSSL 3.0.
|
|
|
|
|
|
=head1 COPYRIGHT
|
|
|
|
Copyright 2000-2022 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
|
|
L<https://www.openssl.org/source/license.html>.
|
|
|
|
=cut
|