Support functions to allow libraries to provide errors to their callers. More...

#include <freeradius-devel/build.h>
#include <freeradius-devel/missing.h>
#include <string.h>
#include <stdarg.h>

Include dependency graph for strerror.h:

Go to the source code of this file.

Add an error string to the thread local error stack
Note printf functions should not be used in decoder libraries as an attacker may be able to exploit them to consume excessive amounts of CPU time. Use fr_strerror_const_* functions instead.
static void	_fr_strerror_printf (char const file, int line, char const fmt,...)

static void	_fr_strerror_printf_push (char const file, int line, char const fmt,...)

static void	_fr_strerror_printf_push_head (char const file, int line, char const fmt,...)

void	_fr_strerror_vprintf (char const file, int line, char const fmt, va_list ap)
	Log to thread local error buffer.

void	_fr_strerror_vprintf_push (char const file, int line, char const fmt, va_list ap)
	Add a message to an existing stack of messages at the tail.

void	_fr_strerror_vprintf_push_head (char const file, int line, char const fmt, va_list ap)
	Add a message to an existing stack of messages at the head.

#define	fr_strerror_printf(_fmt, ...) _fr_strerror_printf(__FILE__, __LINE__, _fmt, ##__VA_ARGS__)
	Log to thread local error buffer.

#define	fr_strerror_printf_push(_fmt, ...) _fr_strerror_printf_push(__FILE__, __LINE__, _fmt, ##__VA_ARGS__)
	Add a message to an existing stack of messages at the tail.

#define	fr_strerror_printf_push_head(_fmt, ...) _fr_strerror_printf_push_head(__FILE__, __LINE__, _fmt, ##__VA_ARGS__)
	Add a message to an existing stack of messages at the head.

#define	fr_strerror_vprintf(_fmt, _ap) _fr_strerror_vprintf(__FILE__, __LINE__, _fmt, _ap)

#define	fr_strerror_vprintf_push(_fmt, _ap) _fr_strerror_vprintf_push(__FILE__, __LINE, _fmt, _ap)

#define	fr_strerror_vprintf_push_head(_fmt, _ap) _fr_strerror_vprintf_push_head(__FILE__, __LINE__, _fmt, _ap)

Add an error string with marker to the thread local error stack
Note printf functions should not be used in decoder libraries as an attacker may be able to exploit them to consume excessive amounts of CPU time. Use fr_strerror_const_* functions instead.
static void	_fr_strerror_marker_printf (char const file, int line, char const subject, size_t offset, char const *fmt,...)

static void	_fr_strerror_marker_printf_push (char const file, int line, char const subject, size_t offset, char const *fmt,...)

static void	_fr_strerror_marker_printf_push_head (char const file, int line, char const subject, size_t offset, char const *fmt,...)

void	_fr_strerror_marker_vprintf (char const file, int line, char const subject, size_t offset, char const *fmt, va_list ap)
	Add an error marker to an existing stack of messages.

void	_fr_strerror_marker_vprintf_push (char const file, int line, char const subject, size_t offset, char const *fmt, va_list ap)
	Add an error marker to an existing stack of messages at the tail.

void	_fr_strerror_marker_vprintf_push_head (char const file, int line, char const subject, size_t offset, char const *fmt, va_list ap)
	Add an error marker to an existing stack of messages at the head.

#define	fr_strerror_marker_printf(_subject, _offset, _fmt, ...) _fr_strerror_marker_printf(__FILE__, __LINE__, _subject, _offset, _fmt, ##__VA_ARGS__)
	Add an error marker to an existing stack of messages.

#define	fr_strerror_marker_printf_push(_subject, _offset, _fmt, ...) _fr_strerror_marker_printf_push(__FILE__, __LINE__, _subject, _offset, _fmt, ##__VA_ARGS__)
	Add an error marker to an existing stack of messages at the tail.

#define	fr_strerror_marker_printf_push_head(_subject, _offset, _fmt, ...) _fr_strerror_marker_printf_push_head(__FILE__, __LINE__, _subject, _offset, _fmt, ##__VA_ARGS__)
	Add an error marker to an existing stack of messages at the head.

#define	fr_strerror_marker_vprintf(_subject, _offset, _fmt, _ap) _fr_strerror_marker_vprintf(__FILE__, __LINE__, _subject, _offset, _fmt, _ap)

#define	fr_strerror_marker_vprintf_push(_subject, _offset, _fmt, _ap) _fr_strerror_marker_vprintf_push(__FILE__, __LINE__, _subject, _offset, _fmt, _ap)

#define	fr_strerror_marker_vprintf_push_head(_subject, _offset, _fmt, _ap) _fr_strerror_marker_vprintf_push_head(__FILE__, __LINE__, _subject, _offset, _fmt, _ap)

Add a const error string to the thread local error stack
Note This ~30x the speed of the printf variants, and should be used wherever possible
void	_fr_strerror_const (char const file, int line, char const msg)
	Log to thread local error buffer.

void	_fr_strerror_const_push (char const file, int line, char const msg)
	Add a message to an existing stack of messages at the tail.

void	_fr_strerror_const_push_head (char const file, int line, char const msg)
	Add a message to an existing stack of messages at the head.

#define	fr_strerror_const(_msg) _fr_strerror_const(__FILE__, __LINE__, _msg)

#define	fr_strerror_const_push(_msg) _fr_strerror_const_push(__FILE__, __LINE__, _msg)

#define	fr_strerror_const_push_head(_msg) _fr_strerror_const_push_head(__FILE__, __LINE__, _msg)

Retrieve errors from the thread local error stack
void	fr_perror (char const *,...))
	Print the current error to stderr with a prefix.

char const *	fr_perror_to_str (char const line_sep, char const fmt,...))
	Print the stack of string buffers to a thread local buffer.

char const *	fr_strerror (void)
	Get the last library error.

void	fr_strerror_clear (void)
	Clears all pending messages from the talloc pools.

char const *	fr_strerror_marker (char const *subject, size_t offset)
	Get the last library error marker.

char const *	fr_strerror_marker_peek (char const *subject, size_t offset)
	Get the last library error marker.

char const *	fr_strerror_marker_pop (char const *subject, size_t offset)
	Pop the last library error with marker information.

char const *	fr_strerror_peek (void)
	Get the last library error.

char const *	fr_strerror_pop (void)
	Pop the last library error.

Detailed Description

Support functions to allow libraries to provide errors to their callers.

Copyright: 2017-2020 The FreeRADIUS server project; 2017-2020 Arran Cudbard-Bell (a.cud.nosp@m.bard.nosp@m.b@fre.nosp@m.erad.nosp@m.ius.o.nosp@m.rg)

Definition in file strerror.h.

Macro Definition Documentation

◆ fr_strerror_const

#define fr_strerror_const ( _msg ) _fr_strerror_const(__FILE__, __LINE__, _msg)

Definition at line 223 of file strerror.h.

◆ fr_strerror_const_push

#define fr_strerror_const_push ( _msg ) _fr_strerror_const_push(__FILE__, __LINE__, _msg)

Definition at line 227 of file strerror.h.

◆ fr_strerror_const_push_head

#define fr_strerror_const_push_head ( _msg ) _fr_strerror_const_push_head(__FILE__, __LINE__, _msg)

Definition at line 231 of file strerror.h.

◆ fr_strerror_marker_printf

#define fr_strerror_marker_printf	(	_subject,
		_offset,
		_fmt,
		...
	)	_fr_strerror_marker_printf(__FILE__, __LINE__, _subject, _offset, _fmt, ##__VA_ARGS__)

Add an error marker to an existing stack of messages.

Parameters

[in]	_subject	to mark up.
[in]	_offset	Positive offset to show where the error should be positioned.
[in]	_fmt	Error string.
[in]	...	Arguments for the error string.

Definition at line 154 of file strerror.h.

◆ fr_strerror_marker_printf_push

#define fr_strerror_marker_printf_push	(	_subject,
		_offset,
		_fmt,
		...
	)	_fr_strerror_marker_printf_push(__FILE__, __LINE__, _subject, _offset, _fmt, ##__VA_ARGS__)

Add an error marker to an existing stack of messages at the tail.

Parameters

[in]	_subject	to mark up.
[in]	_offset	Positive offset to show where the error should be positioned.
[in]	_fmt	Error string.
[in]	...	Arguments for the error string.

Definition at line 178 of file strerror.h.

◆ fr_strerror_marker_printf_push_head

#define fr_strerror_marker_printf_push_head	(	_subject,
		_offset,
		_fmt,
		...
	)	_fr_strerror_marker_printf_push_head(__FILE__, __LINE__, _subject, _offset, _fmt, ##__VA_ARGS__)

Add an error marker to an existing stack of messages at the head.

Parameters

[in]	_subject	to mark up.
[in]	_offset	Positive offset to show where the error should be positioned.
[in]	_fmt	Error string.
[in]	...	Arguments for the error string.

Definition at line 202 of file strerror.h.

◆ fr_strerror_marker_vprintf

#define fr_strerror_marker_vprintf	(	_subject,
		_offset,
		_fmt,
		_ap
	)	_fr_strerror_marker_vprintf(__FILE__, __LINE__, _subject, _offset, _fmt, _ap)

Definition at line 126 of file strerror.h.

◆ fr_strerror_marker_vprintf_push

#define fr_strerror_marker_vprintf_push	(	_subject,
		_offset,
		_fmt,
		_ap
	)	_fr_strerror_marker_vprintf_push(__FILE__, __LINE__, _subject, _offset, _fmt, _ap)

Definition at line 132 of file strerror.h.

◆ fr_strerror_marker_vprintf_push_head

#define fr_strerror_marker_vprintf_push_head	(	_subject,
		_offset,
		_fmt,
		_ap
	)	_fr_strerror_marker_vprintf_push_head(__FILE__, __LINE__, _subject, _offset, _fmt, _ap)

Definition at line 138 of file strerror.h.

◆ fr_strerror_printf

#define fr_strerror_printf	(	_fmt,
		...
	)	_fr_strerror_printf(__FILE__, __LINE__, _fmt, ##__VA_ARGS__)

Log to thread local error buffer.

Parameters

[in]	_fmt	printf style format string. If NULL clears any existing messages.
[in]	...	Arguments for the format string.

Definition at line 64 of file strerror.h.

◆ fr_strerror_printf_push

#define fr_strerror_printf_push	(	_fmt,
		...
	)	_fr_strerror_printf_push(__FILE__, __LINE__, _fmt, ##__VA_ARGS__)

Add a message to an existing stack of messages at the tail.

Parameters

[in]	_fmt	printf style format string.
[in]	...	Arguments for the format string.

Definition at line 84 of file strerror.h.

◆ fr_strerror_printf_push_head

#define fr_strerror_printf_push_head	(	_fmt,
		...
	)	_fr_strerror_printf_push_head(__FILE__, __LINE__, _fmt, ##__VA_ARGS__)

Add a message to an existing stack of messages at the head.

Parameters

[in]	_fmt	printf style format string.
[in]	...	Arguments for the format string.

Definition at line 104 of file strerror.h.

◆ fr_strerror_vprintf

#define fr_strerror_vprintf	(	_fmt,
		_ap
	)	_fr_strerror_vprintf(__FILE__, __LINE__, _fmt, _ap)

Definition at line 44 of file strerror.h.

◆ fr_strerror_vprintf_push

#define fr_strerror_vprintf_push	(	_fmt,
		_ap
	)	_fr_strerror_vprintf_push(__FILE__, __LINE, _fmt, _ap)

Definition at line 48 of file strerror.h.

◆ fr_strerror_vprintf_push_head

#define fr_strerror_vprintf_push_head	(	_fmt,
		_ap
	)	_fr_strerror_vprintf_push_head(__FILE__, __LINE__, _fmt, _ap)

Definition at line 52 of file strerror.h.

Function Documentation

◆ _fr_strerror_const()

void _fr_strerror_const	(	char const *	file,
		int	line,
		char const *	msg
	)

Log to thread local error buffer.

Parameters

[in]	file	the error occurred in.
[in]	line	the error occurred on.
[in]	msg	To add to error stack. Must have a lifetime equal to that of the program.

Definition at line 449 of file strerror.c.

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◆ _fr_strerror_const_push()

void _fr_strerror_const_push	(	char const *	file,
		int	line,
		char const *	msg
	)

Add a message to an existing stack of messages at the tail.

Parameters

[in]	file	the error occurred in.
[in]	line	the error occurred on.
[in]	msg	To add to error stack. Must have a lifetime equal to that of the program.

Definition at line 507 of file strerror.c.

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◆ _fr_strerror_const_push_head()

void _fr_strerror_const_push_head	(	char const *	file,
		int	line,
		char const *	msg
	)

Add a message to an existing stack of messages at the head.

Parameters

[in]	file	the error occurred in.
[in]	line	the error occurred on.
[in]	msg	To add to error stack. Must have a lifetime equal to that of the program.

Definition at line 530 of file strerror.c.

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◆ _fr_strerror_marker_printf()

static void _fr_strerror_marker_printf	(	char const *	file,
		int	line,
		char const *	subject,
		size_t	offset,
		char const *	fmt,
			...
	)

inlinestatic

Definition at line 158 of file strerror.h.

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◆ _fr_strerror_marker_printf_push()

static void _fr_strerror_marker_printf_push	(	char const *	file,
		int	line,
		char const *	subject,
		size_t	offset,
		char const *	fmt,
			...
	)

inlinestatic

Definition at line 182 of file strerror.h.

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◆ _fr_strerror_marker_printf_push_head()

static void _fr_strerror_marker_printf_push_head	(	char const *	file,
		int	line,
		char const *	subject,
		size_t	offset,
		char const *	fmt,
			...
	)

inlinestatic

Definition at line 206 of file strerror.h.

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◆ _fr_strerror_marker_vprintf()

void _fr_strerror_marker_vprintf	(	char const *	file,
		int	line,
		char const *	subject,
		size_t	offset,
		char const *	fmt,
		va_list	ap
	)

Add an error marker to an existing stack of messages.

Parameters

[in]	file	the error occurred in.
[in]	line	the error occurred on.
[in]	subject	to mark up.
[in]	offset	Positive offset to show where the error should be positioned.
[in]	fmt	Error string.
[in]	ap	Arguments for the error string.

Definition at line 319 of file strerror.c.

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◆ _fr_strerror_marker_vprintf_push()

void _fr_strerror_marker_vprintf_push	(	char const *	file,
		int	line,
		char const *	subject,
		size_t	offset,
		char const *	fmt,
		va_list	ap
	)

Add an error marker to an existing stack of messages at the tail.

Parameters

[in]	file	the error occurred in.
[in]	line	the error occurred on.
[in]	subject	to mark up.
[in]	offset	Positive offset to show where the error should be positioned.
[in]	fmt	Error string.
[in]	ap	Arguments for the error string.

Definition at line 347 of file strerror.c.

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◆ _fr_strerror_marker_vprintf_push_head()

void _fr_strerror_marker_vprintf_push_head	(	char const *	file,
		int	line,
		char const *	subject,
		size_t	offset,
		char const *	fmt,
		va_list	ap
	)

Add an error marker to an existing stack of messages at the head.

Parameters

[in]	file	the error occurred in.
[in]	line	the error occurred on.
[in]	subject	to mark up.
[in]	offset	Positive offset to show where the error should be positioned.
[in]	fmt	Error string.
[in]	ap	Arguments for the error string.

Definition at line 381 of file strerror.c.

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◆ _fr_strerror_printf()

static void _fr_strerror_printf	(	char const *	file,
		int	line,
		char const *	fmt,
			...
	)

inlinestatic

Definition at line 68 of file strerror.h.

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◆ _fr_strerror_printf_push()

static void _fr_strerror_printf_push	(	char const *	file,
		int	line,
		char const *	fmt,
			...
	)

inlinestatic

Definition at line 88 of file strerror.h.

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◆ _fr_strerror_printf_push_head()

static void _fr_strerror_printf_push_head	(	char const *	file,
		int	line,
		char const *	fmt,
			...
	)

inlinestatic

Definition at line 108 of file strerror.h.

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◆ _fr_strerror_vprintf()

void _fr_strerror_vprintf	(	char const *	file,
		int	line,
		char const *	fmt,
		va_list	ap
	)

Log to thread local error buffer.

Parameters

[in]	file	the error occurred in.
[in]	line	the error occurred on.
[in]	fmt	printf style format string. If NULL clears any existing messages.
[in]	ap	Arguments for the format string.

Definition at line 244 of file strerror.c.

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◆ _fr_strerror_vprintf_push()

void _fr_strerror_vprintf_push	(	char const *	file,
		int	line,
		char const *	fmt,
		va_list	ap
	)

Add a message to an existing stack of messages at the tail.

Parameters

[in]	file	the error occurred in.
[in]	line	the error occurred on.
[in]	fmt	printf style format string.
[in]	ap	Arguments for the format string.

Definition at line 262 of file strerror.c.

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◆ _fr_strerror_vprintf_push_head()

void _fr_strerror_vprintf_push_head	(	char const *	file,
		int	line,
		char const *	fmt,
		va_list	ap
	)

Add a message to an existing stack of messages at the head.

Parameters

[in]	file	the error occurred in.
[in]	line	the error occurred on.
[in]	fmt	printf style format string.
[in]	ap	Arguments for the format string.

Definition at line 289 of file strerror.c.

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◆ fr_perror()

void fr_perror	(	char const *	fmt,
			...
	)

Print the current error to stderr with a prefix.

Used by utility functions lacking their own logging infrastructure

Definition at line 732 of file strerror.c.

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◆ fr_perror_to_str()

char const * fr_perror_to_str	(	char const *	line_sep,
		char const *	fmt,
			...
	)

Print the stack of string buffers to a thread local buffer.

Used by utility functions lacking their own logging infrastructure

Parameters

[in]	line_sep	to insert between the log lines.
[in]	fmt	to prefix all log messages with.

Returns

A thread local string buffer containing the concatenated messages.

Definition at line 778 of file strerror.c.

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◆ fr_strerror()

char const * fr_strerror ( void )

Get the last library error.

Will only return the last library error once, after which it will return a zero length string. If there are additional messages on the log stack they will be discarded.

Returns: library error or zero length string.

Definition at line 553 of file strerror.c.

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◆ fr_strerror_clear()

void fr_strerror_clear ( void )

Clears all pending messages from the talloc pools.

Definition at line 576 of file strerror.c.

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◆ fr_strerror_marker()

char const * fr_strerror_marker	(	char const **	subject,
		size_t *	offset
	)

Get the last library error marker.

Parameters

[out]	subject	The subject string the error relates to.
[out]	offset	Where to place the marker.

Returns

NULL if there are no pending errors.
The error message if there was an error.

Definition at line 597 of file strerror.c.

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◆ fr_strerror_marker_peek()

char const * fr_strerror_marker_peek	(	char const **	subject,
		size_t *	offset
	)

Get the last library error marker.

Parameters

[out]	subject	The subject string the error relates to.
[out]	offset	Where to place the marker.

Returns

NULL if there are no pending errors.
The error message if there was an error.

Definition at line 650 of file strerror.c.

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◆ fr_strerror_marker_pop()

char const * fr_strerror_marker_pop	(	char const **	subject,
		size_t *	offset
	)

Pop the last library error with marker information.

Return the first message added to the error stack using fr_strerror_printf or fr_strerror_printf_push.

Returns

A library error.
NULL if no errors are pending.

Definition at line 707 of file strerror.c.

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◆ fr_strerror_peek()

char const * fr_strerror_peek ( void )

Get the last library error.

Returns: library error or zero length string.

Definition at line 626 of file strerror.c.

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◆ fr_strerror_pop()

char const * fr_strerror_pop ( void )

Pop the last library error.

Return the first message added to the error stack using fr_strerror_printf or fr_strerror_printf_push.

Note: fr_strerror() will return NULL if no messages are pending.

Returns

A library error.
NULL if no errors are pending.

Definition at line 680 of file strerror.c.

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Add an error string to the thread local error stack

Add an error string with marker to the thread local error stack

Add a const error string to the thread local error stack

Retrieve errors from the thread local error stack

Detailed Description

Macro Definition Documentation

◆ fr_strerror_const

◆ fr_strerror_const_push

◆ fr_strerror_const_push_head

◆ fr_strerror_marker_printf

◆ fr_strerror_marker_printf_push

◆ fr_strerror_marker_printf_push_head

◆ fr_strerror_marker_vprintf

◆ fr_strerror_marker_vprintf_push

◆ fr_strerror_marker_vprintf_push_head

◆ fr_strerror_printf

◆ fr_strerror_printf_push

◆ fr_strerror_printf_push_head

◆ fr_strerror_vprintf

◆ fr_strerror_vprintf_push

◆ fr_strerror_vprintf_push_head

Function Documentation

◆ _fr_strerror_const()

◆ _fr_strerror_const_push()

◆ _fr_strerror_const_push_head()

◆ _fr_strerror_marker_printf()

◆ _fr_strerror_marker_printf_push()

◆ _fr_strerror_marker_printf_push_head()

◆ _fr_strerror_marker_vprintf()

◆ _fr_strerror_marker_vprintf_push()

◆ _fr_strerror_marker_vprintf_push_head()

◆ _fr_strerror_printf()

◆ _fr_strerror_printf_push()

◆ _fr_strerror_printf_push_head()

◆ _fr_strerror_vprintf()

◆ _fr_strerror_vprintf_push()

◆ _fr_strerror_vprintf_push_head()

◆ fr_perror()

◆ fr_perror_to_str()

◆ fr_strerror()

◆ fr_strerror_clear()

◆ fr_strerror_marker()

◆ fr_strerror_marker_peek()

◆ fr_strerror_marker_pop()

◆ fr_strerror_peek()

◆ fr_strerror_pop()