json_helper.c File Reference

functions to generate specifciations for JSON parsing More...

#include "platform.h"
#include "gnunet_json_lib.h"

Include dependency graph for json_helper.c:

Go to the source code of this file.

Functions
struct GNUNET_JSON_Specification	GNUNET_JSON_spec_end ()
	End of a parser specification. More...
static enum GNUNET_GenericReturnValue	parse_fixed_data (void *cls, json_t *root, struct GNUNET_JSON_Specification *spec)
	Parse given JSON object to fixed size data. More...
struct GNUNET_JSON_Specification	GNUNET_JSON_spec_fixed (const char *name, void *obj, size_t size)
	Variable size object (in network byte order, encoded using Crockford Base32hex encoding). More...
static enum GNUNET_GenericReturnValue	parse_fixed64_data (void *cls, json_t *root, struct GNUNET_JSON_Specification *spec)
	Parse given JSON object to fixed size data. More...
struct GNUNET_JSON_Specification	GNUNET_JSON_spec_fixed64 (const char *name, void *obj, size_t size)
	Variable size object (in network byte order, encoded using base64 encoding). More...
static enum GNUNET_GenericReturnValue	parse_variable_data (void *cls, json_t *root, struct GNUNET_JSON_Specification *spec)
	Parse given JSON object to variable size data. More...
static void	clean_variable_data (void *cls, struct GNUNET_JSON_Specification *spec)
	Cleanup data left from parsing variable size data. More...
struct GNUNET_JSON_Specification	GNUNET_JSON_spec_varsize (const char *name, void **obj, size_t *size)
	Variable size object (in network byte order, encoded using Crockford Base32hex encoding). More...
static enum GNUNET_GenericReturnValue	parse_string (void *cls, json_t *root, struct GNUNET_JSON_Specification *spec)
	Parse given JSON object to string. More...
struct GNUNET_JSON_Specification	GNUNET_JSON_spec_string (const char *name, const char **strptr)
	The expected field stores a string. More...
static enum GNUNET_GenericReturnValue	parse_json (void *cls, json_t *root, struct GNUNET_JSON_Specification *spec)
	Parse given JSON object to a JSON object. More...
static void	clean_json (void *cls, struct GNUNET_JSON_Specification *spec)
	Cleanup data left from parsing JSON object. More...
struct GNUNET_JSON_Specification	GNUNET_JSON_spec_json (const char *name, json_t **jsonp)
	JSON object or array. More...
static enum GNUNET_GenericReturnValue	parse_object_const (void *cls, json_t *root, struct GNUNET_JSON_Specification *spec)
	Parse given JSON object to a JSON object. More...
struct GNUNET_JSON_Specification	GNUNET_JSON_spec_object_const (const char *name, const json_t **jsonp)
	JSON object, reference counter not incremented. More...
static enum GNUNET_GenericReturnValue	parse_array_const (void *cls, json_t *root, struct GNUNET_JSON_Specification *spec)
	Parse given JSON to a JSON array. More...
struct GNUNET_JSON_Specification	GNUNET_JSON_spec_array_const (const char *name, const json_t **jsonp)
	JSON array, reference counter not incremented. More...
static enum GNUNET_GenericReturnValue	parse_bool (void *cls, json_t *root, struct GNUNET_JSON_Specification *spec)
	Parse given JSON object to a bool. More...
struct GNUNET_JSON_Specification	GNUNET_JSON_spec_bool (const char *name, bool *b)
	boolean. More...
static enum GNUNET_GenericReturnValue	parse_u8 (void *cls, json_t *root, struct GNUNET_JSON_Specification *spec)
	Parse given JSON object to a uint8_t. More...
struct GNUNET_JSON_Specification	GNUNET_JSON_spec_uint8 (const char *name, uint8_t *u8)
	8-bit integer. More...
static enum GNUNET_GenericReturnValue	parse_u16 (void *cls, json_t *root, struct GNUNET_JSON_Specification *spec)
	Parse given JSON object to a uint16_t. More...
struct GNUNET_JSON_Specification	GNUNET_JSON_spec_uint16 (const char *name, uint16_t *u16)
	16-bit integer. More...
static enum GNUNET_GenericReturnValue	parse_u32 (void *cls, json_t *root, struct GNUNET_JSON_Specification *spec)
	Parse given JSON object to a uint32_t. More...
struct GNUNET_JSON_Specification	GNUNET_JSON_spec_uint32 (const char *name, uint32_t *u32)
	32-bit integer. More...
static enum GNUNET_GenericReturnValue	parse_u64 (void *cls, json_t *root, struct GNUNET_JSON_Specification *spec)
	Parse given JSON object to a uint64_t. More...
struct GNUNET_JSON_Specification	GNUNET_JSON_spec_uint64 (const char *name, uint64_t *u64)
	64-bit integer. More...
static enum GNUNET_GenericReturnValue	parse_i64 (void *cls, json_t *root, struct GNUNET_JSON_Specification *spec)
	Parse given JSON object to a int64_t. More...
struct GNUNET_JSON_Specification	GNUNET_JSON_spec_int64 (const char *name, int64_t *i64)
	64-bit signed integer. More...
static enum GNUNET_GenericReturnValue	parse_timestamp (void *cls, json_t *root, struct GNUNET_JSON_Specification *spec)
	Parse given JSON object to a timestamp. More...
struct GNUNET_JSON_Specification	GNUNET_JSON_spec_timestamp (const char *name, struct GNUNET_TIME_Timestamp *t)
	Timestamp. More...
static enum GNUNET_GenericReturnValue	parse_timestamp_nbo (void *cls, json_t *root, struct GNUNET_JSON_Specification *spec)
	Parse given JSON object to absolute time. More...
struct GNUNET_JSON_Specification	GNUNET_JSON_spec_timestamp_nbo (const char *name, struct GNUNET_TIME_TimestampNBO *at)
	Timestamp in network byte order. More...
static enum GNUNET_GenericReturnValue	parse_rel_time (void *cls, json_t *root, struct GNUNET_JSON_Specification *spec)
	Parse given JSON object to relative time. More...
struct GNUNET_JSON_Specification	GNUNET_JSON_spec_relative_time (const char *name, struct GNUNET_TIME_Relative *rt)
	Relative time. More...
static enum GNUNET_GenericReturnValue	parse_rsa_public_key (void *cls, json_t *root, struct GNUNET_JSON_Specification *spec)
	Parse given JSON object to RSA public key. More...
static void	clean_rsa_public_key (void *cls, struct GNUNET_JSON_Specification *spec)
	Cleanup data left from parsing RSA public key. More...
struct GNUNET_JSON_Specification	GNUNET_JSON_spec_rsa_public_key (const char *name, struct GNUNET_CRYPTO_RsaPublicKey **pk)
	Specification for parsing an RSA public key. More...
static enum GNUNET_GenericReturnValue	parse_rsa_signature (void *cls, json_t *root, struct GNUNET_JSON_Specification *spec)
	Parse given JSON object to RSA signature. More...
static void	clean_rsa_signature (void *cls, struct GNUNET_JSON_Specification *spec)
	Cleanup data left from parsing RSA signature. More...
struct GNUNET_JSON_Specification	GNUNET_JSON_spec_rsa_signature (const char *name, struct GNUNET_CRYPTO_RsaSignature **sig)
	Specification for parsing an RSA signature. More...
static enum GNUNET_GenericReturnValue	parse_boolean (void *cls, json_t *root, struct GNUNET_JSON_Specification *spec)
	Parse given JSON object to an int as a boolean. More...
struct GNUNET_JSON_Specification	GNUNET_JSON_spec_boolean (const char *name, int *boolean)
	Boolean (true mapped to GNUNET_YES, false mapped to GNUNET_NO). More...

Detailed Description

functions to generate specifciations for JSON parsing

Author

Florian Dold

Benedikt Mueller

Christian Grothoff

Definition in file json_helper.c.

Function Documentation

GNUNET_JSON_spec_end()

struct GNUNET_JSON_Specification GNUNET_JSON_spec_end

(

void

)

End of a parser specification.

Definition at line 1 of file json_helper.c.

{
  struct GNUNET_JSON_Specification ret = {
    .parser = NULL,
    .cleaner = NULL,
    .cls = NULL
  };
 
  return ret;
}

References ret.

Referenced by add_attribute_cont(), add_credential_cont(), bulk_tx_start(), consume_ticket_cont(), namestore_add_or_update(), and revoke_ticket_cont().

Here is the caller graph for this function:

parse_fixed_data()

static enum GNUNET_GenericReturnValue parse_fixed_data ( void *  cls, json_t *  root, struct GNUNET_JSON_Specification *  spec  )

static

Parse given JSON object to fixed size data.

Parameters

	cls	closure, NULL
	root	the json object representing data
[out]	spec	where to write the data

Returns

GNUNET_OK upon successful parsing; GNUNET_SYSERR upon error

Definition at line 1 of file json_helper.c.

{
  const char *enc;
  unsigned int len;
 
  if (NULL == (enc = json_string_value (root)))
  {
    GNUNET_break_op (0);
    return GNUNET_SYSERR;
  }
  len = strlen (enc);
  if (((len * 5) / 8) != spec->ptr_size)
  {
    GNUNET_break_op (0);
    GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
                "Field `%s' has wrong length\n",
                spec->field);
    return GNUNET_SYSERR;
  }
  if (GNUNET_OK !=
      GNUNET_STRINGS_string_to_data (enc,
                                     len,
                                     spec->ptr,
                                     spec->ptr_size))
  {
    GNUNET_break_op (0);
    return GNUNET_SYSERR;
  }
  return GNUNET_OK;
}

GNUNET_JSON_spec_fixed()

struct GNUNET_JSON_Specification GNUNET_JSON_spec_fixed	(	const char *	name,
		void *	obj,
		size_t	size
	)

Variable size object (in network byte order, encoded using Crockford Base32hex encoding).

Parameters

	name	name of the JSON field
[out]	obj	pointer where to write the data, must have size bytes
	size	number of bytes expected in obj

Definition at line 1 of file json_helper.c.

{
  struct GNUNET_JSON_Specification ret = {
    .parser = &parse_fixed_data,
    .cleaner = NULL,
    .cls = NULL,
    .field = name,
    .ptr = obj,
    .ptr_size = size,
    .size_ptr = NULL
  };
 
  return ret;
}

parse_fixed64_data()

static enum GNUNET_GenericReturnValue parse_fixed64_data ( void *  cls, json_t *  root, struct GNUNET_JSON_Specification *  spec  )

static

Parse given JSON object to fixed size data.

Parameters

	cls	closure, NULL
	root	the json object representing data
[out]	spec	where to write the data

Returns

GNUNET_OK upon successful parsing; GNUNET_SYSERR upon error

Definition at line 1 of file json_helper.c.

{
  const char *enc;
  unsigned int len;
  void *output;
  size_t olen;
 
  if (NULL == (enc = json_string_value (root)))
  {
    GNUNET_break_op (0);
    return GNUNET_SYSERR;
  }
  len = strlen (enc);
  output = NULL;
  olen = GNUNET_STRINGS_base64_decode (enc,
                                       len,
                                       &output);
  if (olen != spec->ptr_size)
  {
    GNUNET_break_op (0);
    GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
                "Field `%s' has wrong length\n",
                spec->field);
    GNUNET_free (output);
    return GNUNET_SYSERR;
  }
  memcpy (spec->ptr,
          output,
          olen);
  GNUNET_free (output);
  return GNUNET_OK;
}

GNUNET_JSON_spec_fixed64()

struct GNUNET_JSON_Specification GNUNET_JSON_spec_fixed64	(	const char *	name,
		void *	obj,
		size_t	size
	)

Variable size object (in network byte order, encoded using base64 encoding).

Parameters

	name	name of the JSON field
[out]	obj	pointer where to write the data, must have size bytes
	size	number of bytes expected in obj

Definition at line 1 of file json_helper.c.

{
  struct GNUNET_JSON_Specification ret = {
    .parser = &parse_fixed64_data,
    .cleaner = NULL,
    .cls = NULL,
    .field = name,
    .ptr = obj,
    .ptr_size = size,
    .size_ptr = NULL
  };
 
  return ret;
}

parse_variable_data()

static enum GNUNET_GenericReturnValue parse_variable_data ( void *  cls, json_t *  root, struct GNUNET_JSON_Specification *  spec  )

static

Parse given JSON object to variable size data.

Parameters

	cls	closure, NULL
	root	the json object representing data
[out]	spec	where to write the data

Returns

GNUNET_OK upon successful parsing; GNUNET_SYSERR upon error

Definition at line 1 of file json_helper.c.

{
  const char *str;
  size_t size;
  void *data;
 
  str = json_string_value (root);
  if (NULL == str)
  {
    GNUNET_break_op (0);
    return GNUNET_SYSERR;
  }
  if (GNUNET_OK !=
      GNUNET_STRINGS_string_to_data_alloc (str,
                                           strlen (str),
                                           &data,
                                           &size))
  {
    GNUNET_break_op (0);
    return GNUNET_SYSERR;
  }
  *(void **) spec->ptr = data;
  *spec->size_ptr = size;
  return GNUNET_OK;
}

clean_variable_data()

static void clean_variable_data ( void *  cls, struct GNUNET_JSON_Specification *  spec  )

static

Cleanup data left from parsing variable size data.

Parameters

	cls	closure, NULL
[out]	spec	where to free the data

Definition at line 215 of file json_helper.c.

{
  (void) cls;
  if (0 != *spec->size_ptr)
  {
    GNUNET_free (*(void **) spec->ptr);
    *(void **) spec->ptr = NULL;
    *spec->size_ptr = 0;
  }
}

References GNUNET_JSON_Specification::cls, GNUNET_free, GNUNET_JSON_Specification::ptr, and GNUNET_JSON_Specification::size_ptr.

GNUNET_JSON_spec_varsize()

struct GNUNET_JSON_Specification GNUNET_JSON_spec_varsize	(	const char *	name,
		void **	obj,
		size_t *	size
	)

Variable size object (in network byte order, encoded using Crockford Base32hex encoding).

Parameters

	name	name of the JSON field
[out]	obj	pointer where to write the data, will be allocated
[out]	size	where to store the number of bytes allocated for obj

Definition at line 215 of file json_helper.c.

{
  struct GNUNET_JSON_Specification ret = {
    .parser = &parse_variable_data,
    .cleaner = &clean_variable_data,
    .cls = NULL,
    .field = name,
    .ptr = obj,
    .ptr_size = 0,
    .size_ptr = size
  };
 
  *obj = NULL;
  *size = 0;
  return ret;
}

parse_string()

static enum GNUNET_GenericReturnValue parse_string ( void *  cls, json_t *  root, struct GNUNET_JSON_Specification *  spec  )

static

Parse given JSON object to string.

Parameters

	cls	closure, NULL
	root	the json object representing data
[out]	spec	where to write the data

Returns

GNUNET_OK upon successful parsing; GNUNET_SYSERR upon error

Definition at line 215 of file json_helper.c.

{
  const char *str;
 
  (void) cls;
  str = json_string_value (root);
  if (NULL == str)
  {
    GNUNET_break_op (0);
    return GNUNET_SYSERR;
  }
  *(const char **) spec->ptr = str;
  return GNUNET_OK;
}

GNUNET_JSON_spec_string()

struct GNUNET_JSON_Specification GNUNET_JSON_spec_string	(	const char *	name,
		const char **	strptr
	)

The expected field stores a string.

Parameters

name	name of the JSON field
strptr	where to store a pointer to the field

Definition at line 215 of file json_helper.c.

{
  struct GNUNET_JSON_Specification ret = {
    .parser = &parse_string,
    .cleaner = NULL,
    .cls = NULL,
    .field = name,
    .ptr = strptr,
    .ptr_size = 0,
    .size_ptr = NULL
  };
 
  *strptr = NULL;
  return ret;
}

parse_json()

static enum GNUNET_GenericReturnValue parse_json ( void *  cls, json_t *  root, struct GNUNET_JSON_Specification *  spec  )

static

Parse given JSON object to a JSON object.

(Yes, trivial.)

Parameters

	cls	closure, NULL
	root	the json object representing data
[out]	spec	where to write the data

Returns

GNUNET_OK upon successful parsing; GNUNET_SYSERR upon error

Definition at line 215 of file json_helper.c.

{
  if (! (json_is_object (root) || json_is_array (root)))
  {
    GNUNET_break_op (0);
    return GNUNET_SYSERR;
  }
  json_incref (root);
  *(json_t **) spec->ptr = root;
  return GNUNET_OK;
}

clean_json()

static void clean_json ( void *  cls, struct GNUNET_JSON_Specification *  spec  )

static

Cleanup data left from parsing JSON object.

Parameters

	cls	closure, NULL
[out]	spec	where to free the data

Definition at line 326 of file json_helper.c.

{
  json_t **ptr = (json_t **) spec->ptr;
 
  if (NULL != *ptr)
  {
    json_decref (*ptr);
    *ptr = NULL;
  }
}

References GNUNET_JSON_Specification::ptr.

GNUNET_JSON_spec_json()

struct GNUNET_JSON_Specification GNUNET_JSON_spec_json	(	const char *	name,
		json_t **	jsonp
	)

JSON object or array.

Reference counter is incremented.

Parameters

	name	name of the JSON field
[out]	jsonp	where to store the JSON found under name

Definition at line 326 of file json_helper.c.

{
  struct GNUNET_JSON_Specification ret = {
    .parser = &parse_json,
    .cleaner = &clean_json,
    .cls = NULL,
    .field = name,
    .ptr = jsonp,
    .ptr_size = 0,
    .size_ptr = NULL
  };
 
  *jsonp = NULL;
  return ret;
}

parse_object_const()

static enum GNUNET_GenericReturnValue parse_object_const ( void *  cls, json_t *  root, struct GNUNET_JSON_Specification *  spec  )

static

Parse given JSON object to a JSON object.

Parameters

	cls	closure, NULL
	root	the json object representing data
[out]	spec	where to write the data

Returns

GNUNET_OK upon successful parsing; GNUNET_SYSERR upon error

Definition at line 326 of file json_helper.c.

{
  if (NULL == root)
    return GNUNET_OK;
  if (! json_is_object (root))
  {
    GNUNET_break_op (0);
    return GNUNET_SYSERR;
  }
  *(const json_t **) spec->ptr = (const json_t *) root;
  return GNUNET_OK;
}

GNUNET_JSON_spec_object_const()

struct GNUNET_JSON_Specification GNUNET_JSON_spec_object_const	(	const char *	name,
		const json_t **	jsonp
	)

JSON object, reference counter not incremented.

Parameters

	name	name of the JSON field
[out]	jsonp	where to store the JSON found under name

Definition at line 326 of file json_helper.c.

{
  struct GNUNET_JSON_Specification ret = {
    .parser = &parse_object_const,
    .cls = NULL,
    .field = name,
    .ptr = jsonp,
    .ptr_size = 0,
    .size_ptr = NULL
  };
 
  *jsonp = NULL;
  return ret;
}

parse_array_const()

static enum GNUNET_GenericReturnValue parse_array_const ( void *  cls, json_t *  root, struct GNUNET_JSON_Specification *  spec  )

static

Parse given JSON to a JSON array.

Parameters

	cls	closure, NULL
	root	the json object representing data
[out]	spec	where to write the data

Returns

GNUNET_OK upon successful parsing; GNUNET_SYSERR upon error

Definition at line 326 of file json_helper.c.

{
  if (NULL == root)
    return GNUNET_OK;
  if (! json_is_array (root))
  {
    GNUNET_break_op (0);
    return GNUNET_SYSERR;
  }
  *(const json_t **) spec->ptr = (const json_t *) root;
  return GNUNET_OK;
}

GNUNET_JSON_spec_array_const()

struct GNUNET_JSON_Specification GNUNET_JSON_spec_array_const	(	const char *	name,
		const json_t **	jsonp
	)

JSON array, reference counter not incremented.

Parameters

	name	name of the JSON field
[out]	jsonp	where to store the JSON found under name

Definition at line 326 of file json_helper.c.

{
  struct GNUNET_JSON_Specification ret = {
    .parser = &parse_array_const,
    .cls = NULL,
    .field = name,
    .ptr = jsonp,
    .ptr_size = 0,
    .size_ptr = NULL
  };
 
  *jsonp = NULL;
  return ret;
}

parse_bool()

static enum GNUNET_GenericReturnValue parse_bool ( void *  cls, json_t *  root, struct GNUNET_JSON_Specification *  spec  )

static

Parse given JSON object to a bool.

Parameters

	cls	closure, NULL
	root	the json object representing data
[out]	spec	where to write the data

Returns

GNUNET_OK upon successful parsing; GNUNET_SYSERR upon error

Definition at line 326 of file json_helper.c.

{
  bool *b = spec->ptr;
 
  if (json_true () == root)
  {
    *b = true;
    return GNUNET_OK;
  }
  if (json_false () == root)
  {
    *b = false;
    return GNUNET_OK;
  }
  GNUNET_break_op (0);
  return GNUNET_SYSERR;
}

GNUNET_JSON_spec_bool()

struct GNUNET_JSON_Specification GNUNET_JSON_spec_bool	(	const char *	name,
		bool *	b
	)

boolean.

Parameters

	name	name of the JSON field
[out]	b	where to store the boolean found under name

Definition at line 326 of file json_helper.c.

{
  struct GNUNET_JSON_Specification ret = {
    .parser = &parse_bool,
    .cleaner = NULL,
    .cls = NULL,
    .field = name,
    .ptr = b,
    .ptr_size = sizeof(bool),
    .size_ptr = NULL
  };
 
  return ret;
}

parse_u8()

static enum GNUNET_GenericReturnValue parse_u8 ( void *  cls, json_t *  root, struct GNUNET_JSON_Specification *  spec  )

static

Parse given JSON object to a uint8_t.

Parameters

	cls	closure, NULL
	root	the json object representing data
[out]	spec	where to write the data

Returns

GNUNET_OK upon successful parsing; GNUNET_SYSERR upon error

Definition at line 326 of file json_helper.c.

{
  json_int_t val;
  uint8_t *up = spec->ptr;
 
  if (! json_is_integer (root))
  {
    GNUNET_break_op (0);
    return GNUNET_SYSERR;
  }
  val = json_integer_value (root);
  if ((0 > val) || (val > UINT8_MAX))
  {
    GNUNET_break_op (0);
    return GNUNET_SYSERR;
  }
  *up = (uint8_t) val;
  return GNUNET_OK;
}

GNUNET_JSON_spec_uint8()

struct GNUNET_JSON_Specification GNUNET_JSON_spec_uint8	(	const char *	name,
		uint8_t *	u8
	)

8-bit integer.

Parameters

	name	name of the JSON field
[out]	u8	where to store the integer found under name

Definition at line 326 of file json_helper.c.

{
  struct GNUNET_JSON_Specification ret = {
    .parser = &parse_u8,
    .cleaner = NULL,
    .cls = NULL,
    .field = name,
    .ptr = u8,
    .ptr_size = sizeof(uint8_t),
    .size_ptr = NULL
  };
 
  return ret;
}

parse_u16()

static enum GNUNET_GenericReturnValue parse_u16 ( void *  cls, json_t *  root, struct GNUNET_JSON_Specification *  spec  )

static

Parse given JSON object to a uint16_t.

Parameters

	cls	closure, NULL
	root	the json object representing data
[out]	spec	where to write the data

Returns

GNUNET_OK upon successful parsing; GNUNET_SYSERR upon error

Definition at line 326 of file json_helper.c.

{
  json_int_t val;
  uint16_t *up = spec->ptr;
 
  if (! json_is_integer (root))
  {
    GNUNET_break_op (0);
    return GNUNET_SYSERR;
  }
  val = json_integer_value (root);
  if ((0 > val) || (val > UINT16_MAX))
  {
    GNUNET_break_op (0);
    return GNUNET_SYSERR;
  }
  *up = (uint16_t) val;
  return GNUNET_OK;
}

GNUNET_JSON_spec_uint16()

struct GNUNET_JSON_Specification GNUNET_JSON_spec_uint16	(	const char *	name,
		uint16_t *	u16
	)

16-bit integer.

Parameters

	name	name of the JSON field
[out]	u16	where to store the integer found under name

Definition at line 326 of file json_helper.c.

{
  struct GNUNET_JSON_Specification ret = {
    .parser = &parse_u16,
    .cleaner = NULL,
    .cls = NULL,
    .field = name,
    .ptr = u16,
    .ptr_size = sizeof(uint16_t),
    .size_ptr = NULL
  };
 
  return ret;
}

parse_u32()

static enum GNUNET_GenericReturnValue parse_u32 ( void *  cls, json_t *  root, struct GNUNET_JSON_Specification *  spec  )

static

Parse given JSON object to a uint32_t.

Parameters

	cls	closure, NULL
	root	the json object representing data
[out]	spec	where to write the data

Returns

GNUNET_OK upon successful parsing; GNUNET_SYSERR upon error

Definition at line 326 of file json_helper.c.

{
  json_int_t val;
  uint32_t *up = spec->ptr;
 
  if (! json_is_integer (root))
  {
    GNUNET_break_op (0);
    return GNUNET_SYSERR;
  }
  val = json_integer_value (root);
  if ((0 > val) || (val > UINT32_MAX))
  {
    GNUNET_break_op (0);
    return GNUNET_SYSERR;
  }
  *up = (uint32_t) val;
  return GNUNET_OK;
}

GNUNET_JSON_spec_uint32()

struct GNUNET_JSON_Specification GNUNET_JSON_spec_uint32	(	const char *	name,
		uint32_t *	u32
	)

32-bit integer.

Parameters

	name	name of the JSON field
[out]	u32	where to store the integer found under name

Definition at line 326 of file json_helper.c.

{
  struct GNUNET_JSON_Specification ret = {
    .parser = &parse_u32,
    .cleaner = NULL,
    .cls = NULL,
    .field = name,
    .ptr = u32,
    .ptr_size = sizeof(uint32_t),
    .size_ptr = NULL
  };
 
  return ret;
}

parse_u64()

static enum GNUNET_GenericReturnValue parse_u64 ( void *  cls, json_t *  root, struct GNUNET_JSON_Specification *  spec  )

static

Parse given JSON object to a uint64_t.

Parameters

	cls	closure, NULL
	root	the json object representing data
[out]	spec	where to write the data

Returns

GNUNET_OK upon successful parsing; GNUNET_SYSERR upon error

Definition at line 326 of file json_helper.c.

{
  json_int_t val;
  uint64_t *up = spec->ptr;
 
  if (! json_is_integer (root))
  {
    GNUNET_break_op (0);
    return GNUNET_SYSERR;
  }
  val = json_integer_value (root);
  *up = (uint64_t) val;
  return GNUNET_OK;
}

GNUNET_JSON_spec_uint64()

struct GNUNET_JSON_Specification GNUNET_JSON_spec_uint64	(	const char *	name,
		uint64_t *	u64
	)

64-bit integer.

Parameters

	name	name of the JSON field
[out]	u64	where to store the integer found under name

Definition at line 326 of file json_helper.c.

{
  struct GNUNET_JSON_Specification ret = {
    .parser = &parse_u64,
    .cleaner = NULL,
    .cls = NULL,
    .field = name,
    .ptr = u64,
    .ptr_size = sizeof(uint64_t),
    .size_ptr = NULL
  };
 
  return ret;
}

parse_i64()

static enum GNUNET_GenericReturnValue parse_i64 ( void *  cls, json_t *  root, struct GNUNET_JSON_Specification *  spec  )

static

Parse given JSON object to a int64_t.

Parameters

	cls	closure, NULL
	root	the json object representing data
[out]	spec	where to write the data

Returns

GNUNET_OK upon successful parsing; GNUNET_SYSERR upon error

Definition at line 326 of file json_helper.c.

{
  json_int_t val;
  int64_t *up = spec->ptr;
 
  if (! json_is_integer (root))
  {
    GNUNET_break_op (0);
    return GNUNET_SYSERR;
  }
  val = json_integer_value (root);
  *up = (int64_t) val;
  return GNUNET_OK;
}

GNUNET_JSON_spec_int64()

struct GNUNET_JSON_Specification GNUNET_JSON_spec_int64	(	const char *	name,
		int64_t *	i64
	)

64-bit signed integer.

Parameters

	name	name of the JSON field
[out]	i64	where to store the integer found under name

Definition at line 326 of file json_helper.c.

{
  struct GNUNET_JSON_Specification ret = {
    .parser = &parse_i64,
    .cleaner = NULL,
    .cls = NULL,
    .field = name,
    .ptr = i64,
    .ptr_size = sizeof(int64_t),
    .size_ptr = NULL
  };
 
  return ret;
}

parse_timestamp()

static enum GNUNET_GenericReturnValue parse_timestamp ( void *  cls, json_t *  root, struct GNUNET_JSON_Specification *  spec  )

static

Parse given JSON object to a timestamp.

Parameters

	cls	closure, NULL
	root	the json object representing data
[out]	spec	where to write the data

Returns

GNUNET_OK upon successful parsing; GNUNET_SYSERR upon error

Definition at line 326 of file json_helper.c.

{
  struct GNUNET_TIME_Timestamp *ts = spec->ptr;
  json_t *json_t_s;
  unsigned long long int tval;
 
  if (! json_is_object (root))
  {
    GNUNET_break_op (0);
    return GNUNET_SYSERR;
  }
  json_t_s = json_object_get (root,
                              "t_s");
  if (json_is_integer (json_t_s))
  {
    tval = json_integer_value (json_t_s);
    /* Time is in seconds in JSON, but in microseconds in GNUNET_TIME_Absolute */
    ts->abs_time.abs_value_us
      = tval * GNUNET_TIME_UNIT_SECONDS.rel_value_us;
    if (ts->abs_time.abs_value_us
        / GNUNET_TIME_UNIT_SECONDS.rel_value_us
        != tval)
    {
      /* Integer overflow */
      GNUNET_break_op (0);
      return GNUNET_SYSERR;
    }
    return GNUNET_OK;
  }
  if (json_is_string (json_t_s))
  {
    const char *val;
 
    val = json_string_value (json_t_s);
    if ((0 == strcasecmp (val,
                          "never")))
    {
      ts->abs_time = GNUNET_TIME_UNIT_FOREVER_ABS;
      return GNUNET_OK;
    }
    GNUNET_break_op (0);
    return GNUNET_SYSERR;
  }
  GNUNET_break_op (0);
  return GNUNET_SYSERR;
}

GNUNET_JSON_spec_timestamp()

struct GNUNET_JSON_Specification GNUNET_JSON_spec_timestamp	(	const char *	name,
		struct GNUNET_TIME_Timestamp *	t
	)

Timestamp.

Parameters

	name	name of the JSON field
[out]	t	at where to store the absolute time found under name

Definition at line 326 of file json_helper.c.

{
  struct GNUNET_JSON_Specification ret = {
    .parser = &parse_timestamp,
    .field = name,
    .ptr = t,
    .ptr_size = sizeof(struct GNUNET_TIME_Timestamp)
  };
 
  return ret;
}

parse_timestamp_nbo()

static enum GNUNET_GenericReturnValue parse_timestamp_nbo ( void *  cls, json_t *  root, struct GNUNET_JSON_Specification *  spec  )

static

Parse given JSON object to absolute time.

Parameters

	cls	closure, NULL
	root	the json object representing data
[out]	spec	where to write the data

Returns

GNUNET_OK upon successful parsing; GNUNET_SYSERR upon error

Definition at line 326 of file json_helper.c.

{
  struct GNUNET_TIME_TimestampNBO *ts = spec->ptr;
  struct GNUNET_TIME_Timestamp a;
  struct GNUNET_JSON_Specification ispec;
 
  ispec = *spec;
  ispec.parser = &parse_timestamp;
  ispec.ptr = &a;
  if (GNUNET_OK !=
      parse_timestamp (NULL,
                       root,
                       &ispec))
    return GNUNET_SYSERR;
  *ts = GNUNET_TIME_timestamp_hton (a);
  return GNUNET_OK;
}

GNUNET_JSON_spec_timestamp_nbo()

struct GNUNET_JSON_Specification GNUNET_JSON_spec_timestamp_nbo	(	const char *	name,
		struct GNUNET_TIME_TimestampNBO *	tn
	)

Timestamp in network byte order.

Parameters

	name	name of the JSON field
[out]	tn	where to store the absolute time found under name

Definition at line 326 of file json_helper.c.

{
  struct GNUNET_JSON_Specification ret = {
    .parser = &parse_timestamp_nbo,
    .field = name,
    .ptr = at,
    .ptr_size = sizeof(struct GNUNET_TIME_TimestampNBO)
  };
 
  return ret;
}

parse_rel_time()

static enum GNUNET_GenericReturnValue parse_rel_time ( void *  cls, json_t *  root, struct GNUNET_JSON_Specification *  spec  )

static

Parse given JSON object to relative time.

Parameters

	cls	closure, NULL
	root	the json object representing data
[out]	spec	where to write the data

Returns

GNUNET_OK upon successful parsing; GNUNET_SYSERR upon error

Definition at line 326 of file json_helper.c.

{
  struct GNUNET_TIME_Relative *rel = spec->ptr;
  json_t *json_d_us;
  unsigned long long int tval;
 
  if (! json_is_object (root))
  {
    GNUNET_break_op (0);
    return GNUNET_SYSERR;
  }
  json_d_us = json_object_get (root,
                               "d_us");
  if (json_is_integer (json_d_us))
  {
    tval = json_integer_value (json_d_us);
    if (tval >= (1LLU << 53))
    {
      /* value is larger than allowed */
      GNUNET_break_op (0);
      return GNUNET_SYSERR;
    }
    rel->rel_value_us = tval;
    return GNUNET_OK;
  }
  if (json_is_string (json_d_us))
  {
    const char *val;
 
    val = json_string_value (json_d_us);
    if ((0 == strcasecmp (val,
                          "forever")))
    {
      *rel = GNUNET_TIME_UNIT_FOREVER_REL;
      return GNUNET_OK;
    }
    GNUNET_break_op (0);
    return GNUNET_SYSERR;
  }
  GNUNET_break_op (0);
  return GNUNET_SYSERR;
}

GNUNET_JSON_spec_relative_time()

struct GNUNET_JSON_Specification GNUNET_JSON_spec_relative_time	(	const char *	name,
		struct GNUNET_TIME_Relative *	rt
	)

Relative time.

Parameters

	name	name of the JSON field
[out]	rt	where to store the relative time found under name

Definition at line 326 of file json_helper.c.

{
  struct GNUNET_JSON_Specification ret = {
    .parser = &parse_rel_time,
    .field = name,
    .ptr = rt,
    .ptr_size = sizeof(struct GNUNET_TIME_Relative)
  };
 
  return ret;
}

parse_rsa_public_key()

static enum GNUNET_GenericReturnValue parse_rsa_public_key ( void *  cls, json_t *  root, struct GNUNET_JSON_Specification *  spec  )

static

Parse given JSON object to RSA public key.

Parameters

	cls	closure, NULL
	root	the json object representing data
[out]	spec	where to write the data

Returns

GNUNET_OK upon successful parsing; GNUNET_SYSERR upon error

Definition at line 326 of file json_helper.c.

{
  struct GNUNET_CRYPTO_RsaPublicKey **pk = spec->ptr;
  const char *enc;
  char *buf;
  size_t len;
  size_t buf_len;
 
  if (NULL == (enc = json_string_value (root)))
  {
    GNUNET_break_op (0);
    return GNUNET_SYSERR;
  }
  len = strlen (enc);
  buf_len = (len * 5) / 8;
  buf = GNUNET_malloc (buf_len);
  if (GNUNET_OK !=
      GNUNET_STRINGS_string_to_data (enc,
                                     len,
                                     buf,
                                     buf_len))
  {
    GNUNET_break_op (0);
    GNUNET_free (buf);
    return GNUNET_SYSERR;
  }
  if (NULL == (*pk = GNUNET_CRYPTO_rsa_public_key_decode (buf,
                                                          buf_len)))
  {
    GNUNET_break_op (0);
    GNUNET_free (buf);
    return GNUNET_SYSERR;
  }
  GNUNET_free (buf);
  return GNUNET_OK;
}

clean_rsa_public_key()

static void clean_rsa_public_key ( void *  cls, struct GNUNET_JSON_Specification *  spec  )

static

Cleanup data left from parsing RSA public key.

Parameters

	cls	closure, NULL
[out]	spec	where to free the data

Definition at line 979 of file json_helper.c.

{
  struct GNUNET_CRYPTO_RsaPublicKey **pk = spec->ptr;
 
  if (NULL != *pk)
  {
    GNUNET_CRYPTO_rsa_public_key_free (*pk);
    *pk = NULL;
  }
}

References GNUNET_CRYPTO_rsa_public_key_free(), pk, and GNUNET_JSON_Specification::ptr.

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GNUNET_JSON_spec_rsa_public_key()

struct GNUNET_JSON_Specification GNUNET_JSON_spec_rsa_public_key	(	const char *	name,
		struct GNUNET_CRYPTO_RsaPublicKey **	pk
	)

Specification for parsing an RSA public key.

Parameters

name	name of the JSON field
pk	where to store the RSA key found under name

Definition at line 979 of file json_helper.c.

{
  struct GNUNET_JSON_Specification ret = {
    .parser = &parse_rsa_public_key,
    .cleaner = &clean_rsa_public_key,
    .field = name,
    .ptr = pk
  };
 
  *pk = NULL;
  return ret;
}

parse_rsa_signature()

static enum GNUNET_GenericReturnValue parse_rsa_signature ( void *  cls, json_t *  root, struct GNUNET_JSON_Specification *  spec  )

static

Parse given JSON object to RSA signature.

Parameters

	cls	closure, NULL
	root	the json object representing data
[out]	spec	where to write the data

Returns

GNUNET_OK upon successful parsing; GNUNET_SYSERR upon error

Definition at line 979 of file json_helper.c.

{
  struct GNUNET_CRYPTO_RsaSignature **sig = spec->ptr;
  size_t size;
  const char *str;
  int res;
  void *buf;
 
  str = json_string_value (root);
  if (NULL == str)
  {
    GNUNET_break_op (0);
    return GNUNET_SYSERR;
  }
  size = (strlen (str) * 5) / 8;
  buf = GNUNET_malloc (size);
  res = GNUNET_STRINGS_string_to_data (str,
                                       strlen (str),
                                       buf,
                                       size);
  if (GNUNET_OK != res)
  {
    GNUNET_free (buf);
    GNUNET_break_op (0);
    return GNUNET_SYSERR;
  }
  if (NULL == (*sig = GNUNET_CRYPTO_rsa_signature_decode (buf,
                                                          size)))
  {
    GNUNET_break_op (0);
    GNUNET_free (buf);
    return GNUNET_SYSERR;
  }
  GNUNET_free (buf);
  return GNUNET_OK;
}

clean_rsa_signature()

static void clean_rsa_signature ( void *  cls, struct GNUNET_JSON_Specification *  spec  )

static

Cleanup data left from parsing RSA signature.

Parameters

	cls	closure, NULL
[out]	spec	where to free the data

Definition at line 1064 of file json_helper.c.

{
  struct GNUNET_CRYPTO_RsaSignature  **sig = spec->ptr;
 
  if (NULL != *sig)
  {
    GNUNET_CRYPTO_rsa_signature_free (*sig);
    *sig = NULL;
  }
}

References GNUNET_CRYPTO_rsa_signature_free(), and GNUNET_JSON_Specification::ptr.

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GNUNET_JSON_spec_rsa_signature()

struct GNUNET_JSON_Specification GNUNET_JSON_spec_rsa_signature	(	const char *	name,
		struct GNUNET_CRYPTO_RsaSignature **	sig
	)

Specification for parsing an RSA signature.

Parameters

name	name of the JSON field
sig	where to store the RSA signature found under name

Definition at line 1064 of file json_helper.c.

{
  struct GNUNET_JSON_Specification ret = {
    .parser = &parse_rsa_signature,
    .cleaner = &clean_rsa_signature,
    .cls = NULL,
    .field = name,
    .ptr = sig,
    .ptr_size = 0,
    .size_ptr = NULL
  };
 
  *sig = NULL;
  return ret;
}

parse_boolean()

static enum GNUNET_GenericReturnValue parse_boolean ( void *  cls, json_t *  root, struct GNUNET_JSON_Specification *  spec  )

static

Parse given JSON object to an int as a boolean.

Parameters

	cls	closure, NULL
	root	the json object representing data
[out]	spec	where to write the data

Returns

GNUNET_OK upon successful parsing; GNUNET_SYSERR upon error

Definition at line 1064 of file json_helper.c.

{
  int *bp = spec->ptr;
 
  if (! json_is_boolean (root))
  {
    GNUNET_break_op (0);
    return GNUNET_SYSERR;
  }
  *bp = json_boolean_value (root) ? GNUNET_YES : GNUNET_NO;
  return GNUNET_OK;
}

GNUNET_JSON_spec_boolean()

struct GNUNET_JSON_Specification GNUNET_JSON_spec_boolean	(	const char *	name,
		int *	boolean
	)

Boolean (true mapped to GNUNET_YES, false mapped to GNUNET_NO).

Parameters

	name	name of the JSON field
[out]	boolean	where to store the boolean found under name

Definition at line 1064 of file json_helper.c.

{
  struct GNUNET_JSON_Specification ret = {
    .parser = &parse_boolean,
    .cleaner = NULL,
    .cls = NULL,
    .field = name,
    .ptr = boolean,
    .ptr_size = sizeof(int),
    .size_ptr = NULL
  };
 
  return ret;
}