rlm_json.c File Reference

Parses JSON responses. More...

#include <freeradius-devel/radiusd.h>
#include <freeradius-devel/modules.h>
#include <freeradius-devel/map_proc.h>
#include <freeradius-devel/rad_assert.h>
#include <ctype.h>
#include "json.h"

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Data Structures
struct	rlm_json_jpath_cache
struct	rlm_json_jpath_to_eval

Typedefs
typedef struct rlm_json_jpath_cache	rlm_json_jpath_cache_t
	Forms a linked list of jpath head node pointers (a list of jpaths) More...
typedef struct rlm_json_jpath_to_eval	rlm_json_jpath_to_eval_t

Functions
static int	_json_map_proc_get_value (TALLOC_CTX *ctx, VALUE_PAIR **out, REQUEST *request, vp_map_t const *map, void *uctx)
	Converts a string value into a VALUE_PAIR. More...
static ssize_t	jpath_validate_xlat (char **out, size_t outlen, UNUSED void const *mod_inst, UNUSED void const *xlat_inst, REQUEST *request, char const *fmt)
	Determine if a jpath expression is valid. More...
static int	mod_bootstrap (UNUSED CONF_SECTION *conf, void *instance)
static rlm_rcode_t	mod_map_proc (UNUSED void *mod_inst, void *proc_inst, REQUEST *request, char const *src, vp_map_t const *maps)
	Parses a JSON string, and executes jpath queries against it to map values to attributes. More...
static int	mod_map_proc_instantiate (void *proc_inst, UNUSED void *mod_inst, UNUSED vp_tmpl_t const *src, vp_map_t const *maps)
	Pre-parse and validate literal jpath expressions for maps. More...

Variables
module_t	rlm_json

Detailed Description

Parses JSON responses.

Id:

4610c92d83fcf2d3fe6b0287bf7292cb8dc59675

Author

Arran Cudbard-Bell

Copyright

2015 Arran Cudbard-Bell a.cud.nosp@m.bard.nosp@m.b@fre.nosp@m.erad.nosp@m.ius.o.nosp@m.rg

2015 Network RADIUS SARL info@.nosp@m.netw.nosp@m.orkra.nosp@m.dius.nosp@m..com

2015 The FreeRADIUS Server Project

Definition in file rlm_json.c.

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Data Structure Documentation

struct rlm_json_jpath_cache

Definition at line 45 of file rlm_json.c.

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Data Fields
fr_jpath_node_t *	jpath	First node in jpath expression.
rlm_json_jpath_cache_t *	next	Next jpath cache entry.

struct rlm_json_jpath_to_eval

Definition at line 50 of file rlm_json.c.

Collaboration diagram for rlm_json_jpath_to_eval:

Data Fields
fr_jpath_node_t const *	jpath
json_object *	root

Typedef Documentation

typedef struct rlm_json_jpath_cache rlm_json_jpath_cache_t

Forms a linked list of jpath head node pointers (a list of jpaths)

Definition at line 44 of file rlm_json.c.

typedef struct rlm_json_jpath_to_eval rlm_json_jpath_to_eval_t

Function Documentation

static int _json_map_proc_get_value ( TALLOC_CTX *  ctx, VALUE_PAIR **  out, REQUEST *  request, vp_map_t const *  map, void *  uctx  )

static

Converts a string value into a VALUE_PAIR.

Parameters

[in,out]	ctx	to allocate VALUE_PAIR (s).
[out]	out	where to write the resulting VALUE_PAIR.
[in]	request	The current request.
[in]	map	to process.
[in]	uctx	The json tree/jpath expression to evaluate.

Returns

• 0 on success.
• -1 on failure.

Definition at line 177 of file rlm_json.c.

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static ssize_t jpath_validate_xlat ( char **  out, size_t  outlen, UNUSED void const *  mod_inst, UNUSED void const *  xlat_inst, REQUEST *  request, char const *  fmt  )

static

Determine if a jpath expression is valid.

Parameters

mod_inst	data.
xlat_inst	data.
out	Where to write the output (in the format <bytes parsed>[:error] ).
outlen	How big out is.
request	The current request.
fmt	jpath expression to parse.

Returns

number of bytes written to out.

Definition at line 65 of file rlm_json.c.

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static int mod_bootstrap ( UNUSED CONF_SECTION *  conf, void *  instance  )

static

Definition at line 306 of file rlm_json.c.

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static rlm_rcode_t mod_map_proc ( UNUSED void *  mod_inst, void *  proc_inst, REQUEST *  request, char const *  src, vp_map_t const *  maps  )

static

Parses a JSON string, and executes jpath queries against it to map values to attributes.

Parameters

mod_inst	unused.
proc_inst	cached jpath sequences.
request	The current request.
src	string to parse.
maps	Head of the map list.

Returns

• RLM_MODULE_NOOP no rows were returned or columns matched.
• RLM_MODULE_UPDATED if one or more VALUE_PAIR were added to the REQUEST.
• RLM_MODULE_FAIL if a fault occurred.

Definition at line 229 of file rlm_json.c.

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static int mod_map_proc_instantiate ( void *  proc_inst, UNUSED void *  mod_inst, UNUSED vp_tmpl_t const *  src, vp_map_t const *  maps  )

static

Pre-parse and validate literal jpath expressions for maps.

Parameters

[out]	proc_inst	the cache structure to fill.
[in]	mod_inst	module instance (unused).
[in]	src	Where to get the JSON data from (unused).
[in]	maps	set of maps to translate to jpaths.

Returns

• 0 on success.
  • -1 on failure.

Definition at line 98 of file rlm_json.c.

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Variable Documentation

module_t rlm_json

Initial value:

= {
        .magic          = RLM_MODULE_INIT,
        .name           = "json",
        .type           = RLM_TYPE_THREAD_SAFE,
        .bootstrap      = mod_bootstrap,
}

Definition at line 327 of file rlm_json.c.