Call environment parsing functions. More...

#include <freeradius-devel/server/log.h>
#include <freeradius-devel/server/cf_util.h>
#include <freeradius-devel/server/tmpl.h>
#include <freeradius-devel/server/request.h>
#include <freeradius-devel/unlang/tmpl.h>
#include <freeradius-devel/unlang/function.h>
#include <freeradius-devel/unlang/interpret.h>
#include <freeradius-devel/unlang/call_env.h>
#include <freeradius-devel/util/token.h>
#include <talloc.h>
#include "call_env.h"

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Data Structures
struct	call_env_parsed_s

union	call_env_parsed_s.data

struct	call_env_rctx_t
	Context to keep track of expansion of call environments. More...

Functions
call_env_t *	call_env_alloc (TALLOC_CTX ctx, char const name, call_env_method_t const call_env_method, tmpl_rules_t const t_rules, CONF_SECTION cs, char const section_name1, char const section_name2, void const data)
	Given a call_env_method, parse all call_env_pair_t in the context of a specific call to an xlat or module method. More...

static size_t	call_env_count (size_t names_len, CONF_SECTION const cs, call_env_parser_t const *call_env)
	Perform a quick assessment of how many parsed call env will be produced. More...

unlang_action_t	call_env_expand (TALLOC_CTX ctx, request_t request, call_env_result_t env_result, void env_data, call_env_t const call_env)
	Initialise the expansion of a call environment. More...

static unlang_action_t	call_env_expand_repeat (rlm_rcode_t p_result, int priority, request_t request, void uctx)

static unlang_action_t	call_env_expand_repeat (UNUSED rlm_rcode_t p_result, UNUSED int priority, request_t request, void uctx)
	Extract expanded call environment tmpl and store in env_data. More...

static unlang_action_t	call_env_expand_start (UNUSED rlm_rcode_t p_result, UNUSED int priority, request_t request, void uctx)
	Start the expansion of a call environment tmpl. More...

static int	call_env_parse (TALLOC_CTX ctx, call_env_parsed_head_t parsed, char const name, tmpl_rules_t const t_rules, CONF_SECTION const cs, char const section_name1, char const section_name2, void const data, call_env_parser_t const *rule)
	Parse per call env. More...

int	call_env_parse_pair (TALLOC_CTX ctx, void out, tmpl_rules_t const t_rules, CONF_ITEM ci, UNUSED char const section_name1, UNUSED char const section_name2, UNUSED void const data, UNUSED call_env_parser_t const rule)
	Standard function we use for parsing call env pairs. More...

call_env_parsed_t *	call_env_parsed_add (TALLOC_CTX ctx, call_env_parsed_head_t head, call_env_parser_t const *rule)
	Allocate a new call_env_parsed_t structure and add it to the list of parsed call envs. More...

static call_env_parsed_t *	call_env_parsed_alloc (TALLOC_CTX ctx, call_env_parser_t const rule)
	Allocates a new call env parsed struct. More...

void	call_env_parsed_free (call_env_parsed_head_t parsed, call_env_parsed_t ptr)
	Remove a call_env_parsed_t from the list of parsed call envs. More...

void	call_env_parsed_set_data (call_env_parsed_t parsed, void const data)
	Assign data to a call_env_parsed_t. More...

void	call_env_parsed_set_multi_index (call_env_parsed_t *parsed, size_t count, size_t index)
	Assign a count and index to a call_env_parsed_t. More...

void	call_env_parsed_set_tmpl (call_env_parsed_t parsed, tmpl_t const tmpl)
	Assign a tmpl to a call_env_parsed_t. More...

void	call_env_parsed_set_value (call_env_parsed_t parsed, fr_value_box_t const vb)
	Assign a value box to a call_env_parsed_t. More...

static int	call_env_parsed_valid (call_env_parsed_t const parsed, CONF_ITEM const ci, call_env_parser_t const *rule)

static call_env_result_t	call_env_result (TALLOC_CTX ctx, request_t request, void out, void tmpl_out, call_env_parsed_t const env, fr_value_box_list_t *tmpl_expanded)
	Parse the result of call_env tmpl expansion. More...

Detailed Description

Call environment parsing functions.

Id: dd133e4e4fc0ee397918678950e22a89519121d6

Copyright: 2023 Network RADIUS SAS (legal.nosp@m.@net.nosp@m.workr.nosp@m.adiu.nosp@m.s.com)

Definition in file call_env.c.

Data Structure Documentation

◆ call_env_parsed_s

struct call_env_parsed_s

Definition at line 41 of file call_env.c.

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Data Fields
size_t	count	Number of CONF_PAIRs found, matching the call_env_parser_t.
union call_env_parsed_s	data
call_env_parsed_entry_t	entry	Entry in list of parsed call_env_parsers.
size_t	multi_index	Array index for this instance.
call_env_parser_t const *	rule	Used to produce this.

◆ call_env_parsed_s.data

union call_env_parsed_s.data

Definition at line 44 of file call_env.c.

Data Fields
void const *	ptr	Data produced from parsing conf pair.
tmpl_t const *	tmpl	Tmpl produced from parsing conf pair.
fr_value_box_t const *	vb	Value box produced from parsing conf pair.

◆ call_env_rctx_t

struct call_env_rctx_t

Context to keep track of expansion of call environments.

Definition at line 116 of file call_env.c.

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Data Fields
call_env_t const *	call_env	Call env being expanded.
void **	data	Final destination structure for value boxes.
call_env_parsed_t const *	last_expanded	The last expanded tmpl.
call_env_result_t *	result	Where to write the return code of callenv expansion.
fr_value_box_list_t	tmpl_expanded	List to write value boxes to as tmpls are expanded.

Function Documentation

◆ call_env_alloc()

call_env_t* call_env_alloc	(	TALLOC_CTX *	ctx,
		char const *	name,
		call_env_method_t const *	call_env_method,
		tmpl_rules_t const *	t_rules,
		CONF_SECTION *	cs,
		char const *	section_name1,
		char const *	section_name2,
		void const *	data
	)

Given a call_env_method, parse all call_env_pair_t in the context of a specific call to an xlat or module method.

Parameters

[in]	ctx	to allocate the call_env_t in.
[in]	name	Module name for error messages.
[in]	call_env_method	containing the call_env_pair_t to evaluate against the specified CONF_SECTION.
[in]	t_rules	that control how call_env_pair_t are parsed.
[in]	cs	to parse in the context of the call.
[in]	data	module / xlat instance data of the module / xlat allocating this call_env

Returns

A new call_env_t on success.
- NULL on failure.

Definition at line 718 of file call_env.c.

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◆ call_env_count()

static size_t call_env_count	(	size_t *	names_len,
		CONF_SECTION const *	cs,
		call_env_parser_t const *	call_env
	)

static

Perform a quick assessment of how many parsed call env will be produced.

Parameters

[in,out]	names_len	Where to write the sum of bytes required to represent the strings which will be parsed as tmpls. This is required to pre-allocate space for the tmpl name buffers.
[in]	cs	Conf section to search for pairs.
[in]	call_env	to parse.

Returns: Number of parsed_call_env expected to be required.

Definition at line 565 of file call_env.c.

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◆ call_env_expand()

unlang_action_t call_env_expand	(	TALLOC_CTX *	ctx,
		request_t *	request,
		call_env_result_t *	env_result,
		void **	env_data,
		call_env_t const *	call_env
	)

Initialise the expansion of a call environment.

Parameters

[in]	ctx	in which to allocate destination structure for resulting value boxes.
[in]	request	Current request.
[out]	env_result	Where to write the result of the callenv expansion. May be NULL
[in,out]	env_data	Where the destination structure should be created.
[in]	call_env	Call environment being expanded.

Definition at line 287 of file call_env.c.

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◆ call_env_expand_repeat() [1/2]

static unlang_action_t call_env_expand_repeat	(	rlm_rcode_t *	p_result,
		int *	priority,
		request_t *	request,
		void *	uctx
	)

static

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◆ call_env_expand_repeat() [2/2]

static unlang_action_t call_env_expand_repeat	(	UNUSED rlm_rcode_t *	p_result,
		UNUSED int *	priority,
		request_t *	request,
		void *	uctx
	)

static

Extract expanded call environment tmpl and store in env_data.

If there are more tmpls to expand, push the next expansion.

Definition at line 235 of file call_env.c.

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◆ call_env_expand_start()

static unlang_action_t call_env_expand_start	(	UNUSED rlm_rcode_t *	p_result,
		UNUSED int *	priority,
		request_t *	request,
		void *	uctx
	)

static

Start the expansion of a call environment tmpl.

Definition at line 129 of file call_env.c.

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◆ call_env_parse()

static int call_env_parse	(	TALLOC_CTX *	ctx,
		call_env_parsed_head_t *	parsed,
		char const *	name,
		tmpl_rules_t const *	t_rules,
		CONF_SECTION const *	cs,
		char const *	section_name1,
		char const *	section_name2,
		void const *	data,
		call_env_parser_t const *	rule
	)

static

Parse per call env.

Used for config options which must be parsed in the context in which the module is being called.

Parameters

[in]	ctx	To allocate parsed environment in.
[out]	parsed	Where to write parsed environment.
[in]	name	Module name for error messages.
[in]	t_rules	controlling how the call env is parsed.
[in]	cs	Module config.
[in]	section_name1	Name 1 from calling section for module calls
[in]	section_name2	Name 2 from calling section for module calls
[in]	data	module / xlat instance data of the module / xlat allocating this call_env
[in]	rule	to parse.

Returns

0 on success;
<0 on failure;

Definition at line 405 of file call_env.c.

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◆ call_env_parse_pair()

int call_env_parse_pair	(	TALLOC_CTX *	ctx,
		void *	out,
		tmpl_rules_t const *	t_rules,
		CONF_ITEM *	ci,
		UNUSED char const *	section_name1,
		UNUSED char const *	section_name2,
		UNUSED void const *	data,
		UNUSED call_env_parser_t const *	rule
	)

Standard function we use for parsing call env pairs.

Note: This is called where no custom pair parsing function is provided, but may be called by custom functions to avoid duplicating the standard parsing code.

Parameters

[in]	ctx	to allocate any data in.
[out]	out	Where to write the result of parsing.
[in]	t_rules	we're parsing attributes with. Contains the default dictionary and nested 'caller' tmpl_rules_t.
[in]	ci	The CONF_SECTION or CONF_PAIR to parse.
[in]	data	module / xlat instance data of the module / xlat allocating this call_env
[in]	rule	Parse rules - How the CONF_PAIR or CONF_SECTION should be converted.

Returns

0 on success.
-1 on failure.

Definition at line 367 of file call_env.c.

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◆ call_env_parsed_add()

call_env_parsed_t* call_env_parsed_add	(	TALLOC_CTX *	ctx,
		call_env_parsed_head_t *	head,
		call_env_parser_t const *	rule
	)

Allocate a new call_env_parsed_t structure and add it to the list of parsed call envs.

Note: tmpl_t and void * should be allocated in the context of the call_env_parsed_t

Parameters

[in]	ctx	to allocate the new call_env_parsed_t in.
[out]	head	to add the new call_env_parsed_t to.
[in]	rule	to base call_env_parsed_t around. MUST NOT BE THE RULE PASSED TO THE CALLBACK. The rule passed to the callback describes how to parse a subsection, but the subsection callback is adding rules describing how to parse its children.

Returns: The new call_env_parsed_t.

Definition at line 613 of file call_env.c.

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◆ call_env_parsed_alloc()

static call_env_parsed_t* call_env_parsed_alloc	(	TALLOC_CTX *	ctx,
		call_env_parser_t const *	rule
	)

inlinestatic

Allocates a new call env parsed struct.

Definition at line 309 of file call_env.c.

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◆ call_env_parsed_free()

void call_env_parsed_free	(	call_env_parsed_head_t *	parsed,
		call_env_parsed_t *	ptr
	)

Remove a call_env_parsed_t from the list of parsed call envs.

Note: Intended to be used by subsection callbacks to remove a call_env_parsed_t from the list of parsed call envs (typically on error).

Parameters

[in]	parsed	to remove parsed data from.
[in]	ptr	to remove.

Definition at line 700 of file call_env.c.

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◆ call_env_parsed_set_data()

void call_env_parsed_set_data	(	call_env_parsed_t *	parsed,
		void const *	data
	)

Assign data to a call_env_parsed_t.

Note: Intended to be used by subsection callbacks to set arbitrary data to be written out to the result structure.

Parameters

[in]	parsed	to assign the tmpl to.
[in]	data	to assign.

Definition at line 670 of file call_env.c.

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◆ call_env_parsed_set_multi_index()

void call_env_parsed_set_multi_index	(	call_env_parsed_t *	parsed,
		size_t	count,
		size_t	index
	)

Assign a count and index to a call_env_parsed_t.

Note: Intended to be used by subsection callbacks to indicate related call_env_parsed_t.

Parameters

[in]	parsed	to modify metadata of.
[in]	count	to assign.
[in]	index	to assign.

Definition at line 685 of file call_env.c.

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◆ call_env_parsed_set_tmpl()

void call_env_parsed_set_tmpl	(	call_env_parsed_t *	parsed,
		tmpl_t const *	tmpl
	)

Assign a tmpl to a call_env_parsed_t.

Note: Intended to be used by subsection callbacks to add a tmpl to be evaluated during the call.

Parameters

[in]	parsed	to assign the tmpl to.
[in]	tmpl	to assign.

Definition at line 642 of file call_env.c.

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◆ call_env_parsed_set_value()

void call_env_parsed_set_value	(	call_env_parsed_t *	parsed,
		fr_value_box_t const *	vb
	)

Assign a value box to a call_env_parsed_t.

Note: Intended to be used by subsection callbacks to set a static boxed value to be written out to the result structure.

Parameters

[in]	parsed	to assign the tmpl to.
[in]	vb	to assign.

Definition at line 656 of file call_env.c.

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◆ call_env_parsed_valid()

static int call_env_parsed_valid	(	call_env_parsed_t const *	parsed,
		CONF_ITEM const *	ci,
		call_env_parser_t const *	rule
	)

inlinestatic

Definition at line 322 of file call_env.c.

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◆ call_env_result()

static call_env_result_t call_env_result	(	TALLOC_CTX *	ctx,
		request_t *	request,
		void *	out,
		void **	tmpl_out,
		call_env_parsed_t const *	env,
		fr_value_box_list_t *	tmpl_expanded
	)

inlinestatic

Parse the result of call_env tmpl expansion.

Definition at line 59 of file call_env.c.

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Data Structures

Functions

Detailed Description

Data Structure Documentation

◆ call_env_parsed_s

◆ call_env_parsed_s.data

◆ call_env_rctx_t

Function Documentation

◆ call_env_alloc()

◆ call_env_count()

◆ call_env_expand()

◆ call_env_expand_repeat() [1/2]

◆ call_env_expand_repeat() [2/2]

◆ call_env_expand_start()

◆ call_env_parse()

◆ call_env_parse_pair()

◆ call_env_parsed_add()

◆ call_env_parsed_alloc()

◆ call_env_parsed_free()

◆ call_env_parsed_set_data()

◆ call_env_parsed_set_multi_index()

◆ call_env_parsed_set_tmpl()

◆ call_env_parsed_set_value()

◆ call_env_parsed_valid()

◆ call_env_result()