json_gnsrecord.c File Reference

#include "platform.h"
#include "gnunet_util_lib.h"
#include "gnunet_json_lib.h"
#include "gnunet_gnsrecord_lib.h"
#include "gnunet_gnsrecord_json_lib.h"

Include dependency graph for json_gnsrecord.c:

Go to the source code of this file.

Data Structures
struct	GnsRecordInfo

Macros
#define	GNUNET_JSON_GNSRECORD_VALUE   "value"
#define	GNUNET_JSON_GNSRECORD_RECORD_DATA   "data"
#define	GNUNET_JSON_GNSRECORD_TYPE   "record_type"
#define	GNUNET_JSON_GNSRECORD_RELATIVE_EXPIRATION_TIME   "relative_expiration"
#define	GNUNET_JSON_GNSRECORD_ABSOLUTE_EXPIRATION_TIME   "absolute_expiration"
#define	GNUNET_JSON_GNSRECORD_FLAG_MAINTENANCE   "is_maintenance"
#define	GNUNET_JSON_GNSRECORD_FLAG_PRIVATE   "is_private"
#define	GNUNET_JSON_GNSRECORD_FLAG_SUPPLEMENTAL   "is_supplemental"
#define	GNUNET_JSON_GNSRECORD_FLAG_RELATIVE   "is_relative_expiration"
#define	GNUNET_JSON_GNSRECORD_FLAG_SHADOW   "is_shadow"
#define	GNUNET_JSON_GNSRECORD_RECORD_NAME   "record_name"

Functions
static void	cleanup_recordinfo (struct GnsRecordInfo *gnsrecord_info)
static int	parse_record (json_t *data, struct GNUNET_GNSRECORD_Data *rd)
	Parse given JSON object to gns record. More...
static int	parse_record_data (struct GnsRecordInfo *gnsrecord_info, json_t *data)
	Parse given JSON object to gns record. More...
static int	parse_gnsrecordobject (void *cls, json_t *root, struct GNUNET_JSON_Specification *spec)
static void	clean_gnsrecordobject (void *cls, struct GNUNET_JSON_Specification *spec)
	Cleanup data left from parsing the record. More...
struct GNUNET_JSON_Specification	GNUNET_GNSRECORD_JSON_spec_gnsrecord (struct GNUNET_GNSRECORD_Data **rd, unsigned int *rd_count, char **name)
	JSON Specification for GNS Records. More...
json_t *	GNUNET_GNSRECORD_JSON_from_gnsrecord (const char *rname, const struct GNUNET_GNSRECORD_Data *rd, unsigned int rd_count)
	Convert GNS record to JSON. More...

Macro Definition Documentation

GNUNET_JSON_GNSRECORD_VALUE

#define GNUNET_JSON_GNSRECORD_VALUE   "value"

Definition at line 32 of file json_gnsrecord.c.

GNUNET_JSON_GNSRECORD_RECORD_DATA

#define GNUNET_JSON_GNSRECORD_RECORD_DATA   "data"

Definition at line 33 of file json_gnsrecord.c.

GNUNET_JSON_GNSRECORD_TYPE

#define GNUNET_JSON_GNSRECORD_TYPE   "record_type"

Definition at line 34 of file json_gnsrecord.c.

GNUNET_JSON_GNSRECORD_RELATIVE_EXPIRATION_TIME

#define GNUNET_JSON_GNSRECORD_RELATIVE_EXPIRATION_TIME   "relative_expiration"

Definition at line 35 of file json_gnsrecord.c.

GNUNET_JSON_GNSRECORD_ABSOLUTE_EXPIRATION_TIME

#define GNUNET_JSON_GNSRECORD_ABSOLUTE_EXPIRATION_TIME   "absolute_expiration"

Definition at line 36 of file json_gnsrecord.c.

GNUNET_JSON_GNSRECORD_FLAG_MAINTENANCE

#define GNUNET_JSON_GNSRECORD_FLAG_MAINTENANCE   "is_maintenance"

Definition at line 37 of file json_gnsrecord.c.

GNUNET_JSON_GNSRECORD_FLAG_PRIVATE

#define GNUNET_JSON_GNSRECORD_FLAG_PRIVATE   "is_private"

Definition at line 38 of file json_gnsrecord.c.

GNUNET_JSON_GNSRECORD_FLAG_SUPPLEMENTAL

#define GNUNET_JSON_GNSRECORD_FLAG_SUPPLEMENTAL   "is_supplemental"

Definition at line 39 of file json_gnsrecord.c.

GNUNET_JSON_GNSRECORD_FLAG_RELATIVE

#define GNUNET_JSON_GNSRECORD_FLAG_RELATIVE   "is_relative_expiration"

Definition at line 40 of file json_gnsrecord.c.

GNUNET_JSON_GNSRECORD_FLAG_SHADOW

#define GNUNET_JSON_GNSRECORD_FLAG_SHADOW   "is_shadow"

Definition at line 41 of file json_gnsrecord.c.

GNUNET_JSON_GNSRECORD_RECORD_NAME

#define GNUNET_JSON_GNSRECORD_RECORD_NAME   "record_name"

Definition at line 42 of file json_gnsrecord.c.

Function Documentation

cleanup_recordinfo()

static void cleanup_recordinfo ( struct GnsRecordInfo *  gnsrecord_info )

static

Definition at line 55 of file json_gnsrecord.c.

{
  char *tmp;
 
  if (NULL != *(gnsrecord_info->rd))
  {
    for (int i = 0; i < *(gnsrecord_info->rd_count); i++)
    {
      tmp = (char*) (*(gnsrecord_info->rd))[i].data;
      if (NULL != tmp)
        GNUNET_free (tmp);
    }
    GNUNET_free (*(gnsrecord_info->rd));
    *(gnsrecord_info->rd) = NULL;
  }
  if (NULL != *(gnsrecord_info->name))
    GNUNET_free (*(gnsrecord_info->name));
  *(gnsrecord_info->name) = NULL;
}

References data, GNUNET_free, GnsRecordInfo::name, GnsRecordInfo::rd, and GnsRecordInfo::rd_count.

Referenced by parse_gnsrecordobject().

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parse_record()

static int parse_record ( json_t *  data, struct GNUNET_GNSRECORD_Data *  rd  )

static

Parse given JSON object to gns record.

Parameters

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

Returns

GNUNET_OK upon successful parsing; GNUNET_SYSERR upon error

Definition at line 85 of file json_gnsrecord.c.

{
  struct GNUNET_TIME_Absolute abs_exp;
  struct GNUNET_TIME_Relative rel_exp;
  const char *value;
  const char *record_type;
  int maintenance;
  int private;
  int supplemental;
  int is_rel_exp;
  int shadow;
  int unpack_state = 0;
  json_error_t err;
 
  // interpret single gns record
  unpack_state = json_unpack_ex (data,
                                 &err,
                                 0,
                                 "{s:s, s:s, s:I, s:b, s:b, s:b, s:b, s:b}",
                                 GNUNET_JSON_GNSRECORD_VALUE,
                                 &value,
                                 GNUNET_JSON_GNSRECORD_TYPE,
                                 &record_type,
                                 GNUNET_JSON_GNSRECORD_RELATIVE_EXPIRATION_TIME,
                                 &rel_exp.rel_value_us,
                                 GNUNET_JSON_GNSRECORD_FLAG_MAINTENANCE,
                                 &maintenance,
                                 GNUNET_JSON_GNSRECORD_FLAG_PRIVATE,
                                 &private,
                                 GNUNET_JSON_GNSRECORD_FLAG_SUPPLEMENTAL,
                                 &supplemental,
                                 GNUNET_JSON_GNSRECORD_FLAG_RELATIVE,
                                 &is_rel_exp,
                                 GNUNET_JSON_GNSRECORD_FLAG_SHADOW,
                                 &shadow);
  if (0 != unpack_state)
  {
    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
                "Error gnsdata object has a wrong format: `%s'!\n",
                err.text);
    unpack_state = json_unpack_ex (data,
                                   &err,
                                   0,
                                   "{s:s, s:s, s:I, s:b, s:b, s:b, s:b, s:b}",
                                   GNUNET_JSON_GNSRECORD_VALUE,
                                   &value,
                                   GNUNET_JSON_GNSRECORD_TYPE,
                                   &record_type,
                                   GNUNET_JSON_GNSRECORD_ABSOLUTE_EXPIRATION_TIME,
                                   &abs_exp.abs_value_us,
                                   GNUNET_JSON_GNSRECORD_FLAG_MAINTENANCE,
                                   &maintenance,
                                   GNUNET_JSON_GNSRECORD_FLAG_PRIVATE,
                                   &private,
                                   GNUNET_JSON_GNSRECORD_FLAG_SUPPLEMENTAL,
                                   &supplemental,
                                   GNUNET_JSON_GNSRECORD_FLAG_RELATIVE,
                                   &is_rel_exp,
                                   GNUNET_JSON_GNSRECORD_FLAG_SHADOW,
                                   &shadow);
    if ((0 != unpack_state) || (is_rel_exp))
    {
      GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
                  "Error gnsdata object has a wrong format: `%s'!\n",
                  (is_rel_exp) ? "No relative expiration given" : err.text);
      return GNUNET_SYSERR;
    }
    rd->expiration_time = abs_exp.abs_value_us;
  }
  else
  {
    rd->expiration_time = rel_exp.rel_value_us;
  }
  rd->record_type = GNUNET_GNSRECORD_typename_to_number (record_type);
  if (UINT32_MAX == rd->record_type)
  {
    GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Unsupported type\n");
    return GNUNET_SYSERR;
  }
  if (GNUNET_OK != GNUNET_GNSRECORD_string_to_value (rd->record_type,
                                                     value,
                                                     (void **) &rd->data,
                                                     &rd->data_size))
  {
    GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Value invalid for record type\n");
    return GNUNET_SYSERR;
  }
 
  if (is_rel_exp)
    rd->flags |= GNUNET_GNSRECORD_RF_RELATIVE_EXPIRATION;
  if (1 == maintenance)
    rd->flags |= GNUNET_GNSRECORD_RF_MAINTENANCE;
  if (1 == private)
    rd->flags |= GNUNET_GNSRECORD_RF_PRIVATE;
  if (1 == supplemental)
    rd->flags |= GNUNET_GNSRECORD_RF_SUPPLEMENTAL;
  if (1 == shadow)
    rd->flags |= GNUNET_GNSRECORD_RF_SHADOW;
  return GNUNET_OK;
}

References GNUNET_TIME_Absolute::abs_value_us, data, GNUNET_GNSRECORD_Data::data, GNUNET_GNSRECORD_Data::data_size, GNUNET_GNSRECORD_Data::expiration_time, GNUNET_GNSRECORD_Data::flags, GNUNET_ERROR_TYPE_ERROR, GNUNET_GNSRECORD_RF_MAINTENANCE, GNUNET_GNSRECORD_RF_PRIVATE, GNUNET_GNSRECORD_RF_RELATIVE_EXPIRATION, GNUNET_GNSRECORD_RF_SHADOW, GNUNET_GNSRECORD_RF_SUPPLEMENTAL, GNUNET_GNSRECORD_string_to_value(), GNUNET_GNSRECORD_typename_to_number(), GNUNET_JSON_GNSRECORD_ABSOLUTE_EXPIRATION_TIME, GNUNET_JSON_GNSRECORD_FLAG_MAINTENANCE, GNUNET_JSON_GNSRECORD_FLAG_PRIVATE, GNUNET_JSON_GNSRECORD_FLAG_RELATIVE, GNUNET_JSON_GNSRECORD_FLAG_SHADOW, GNUNET_JSON_GNSRECORD_FLAG_SUPPLEMENTAL, GNUNET_JSON_GNSRECORD_RELATIVE_EXPIRATION_TIME, GNUNET_JSON_GNSRECORD_TYPE, GNUNET_JSON_GNSRECORD_VALUE, GNUNET_log, GNUNET_OK, GNUNET_SYSERR, rd, GNUNET_GNSRECORD_Data::record_type, GNUNET_TIME_Relative::rel_value_us, and value.

Referenced by parse_record_data().

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parse_record_data()

static int parse_record_data ( struct GnsRecordInfo *  gnsrecord_info, json_t *  data  )

static

Parse given JSON object to gns record.

Parameters

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

Returns

GNUNET_OK upon successful parsing; GNUNET_SYSERR upon error

Definition at line 196 of file json_gnsrecord.c.

{
  GNUNET_assert (NULL != data);
  if (! json_is_array (data))
  {
    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
                "Error gns record data JSON is not an array!\n");
    return GNUNET_SYSERR;
  }
  *(gnsrecord_info->rd_count) = json_array_size (data);
  *(gnsrecord_info->rd) = GNUNET_malloc (sizeof(struct GNUNET_GNSRECORD_Data)
                                         * json_array_size (data));
  {
    size_t index;
    json_t *value;
    json_array_foreach (data, index, value)
    {
      if (GNUNET_OK != parse_record (value, &(*(gnsrecord_info->rd))[index]))
        return GNUNET_SYSERR;
    }
  }
  return GNUNET_OK;
}

References data, GNUNET_assert, GNUNET_ERROR_TYPE_ERROR, GNUNET_log, GNUNET_malloc, GNUNET_OK, GNUNET_SYSERR, parse_record(), GnsRecordInfo::rd, GnsRecordInfo::rd_count, and value.

Referenced by parse_gnsrecordobject().

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parse_gnsrecordobject()

static int parse_gnsrecordobject ( void *  cls, json_t *  root, struct GNUNET_JSON_Specification *  spec  )

static

Definition at line 222 of file json_gnsrecord.c.

{
  struct GnsRecordInfo *gnsrecord_info;
  int unpack_state = 0;
  const char *name;
  json_t *data;
 
  GNUNET_assert (NULL != root);
  if (! json_is_object (root))
  {
    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
                "Error record JSON is not an object!\n");
    return GNUNET_SYSERR;
  }
  // interpret single gns record
  unpack_state = json_unpack (root,
                              "{s:s, s:o!}",
                              GNUNET_JSON_GNSRECORD_RECORD_NAME,
                              &name,
                              GNUNET_JSON_GNSRECORD_RECORD_DATA,
                              &data);
  if (0 != unpack_state)
  {
    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
                "Error namestore records object has a wrong format!\n");
    return GNUNET_SYSERR;
  }
  gnsrecord_info = (struct GnsRecordInfo *) spec->ptr;
  *(gnsrecord_info->name) = GNUNET_strdup (name);
  if (GNUNET_OK != parse_record_data (gnsrecord_info, data))
  {
    cleanup_recordinfo (gnsrecord_info);
    return GNUNET_SYSERR;
  }
  return GNUNET_OK;
}

References cleanup_recordinfo(), data, GNUNET_assert, GNUNET_ERROR_TYPE_ERROR, GNUNET_JSON_GNSRECORD_RECORD_DATA, GNUNET_JSON_GNSRECORD_RECORD_NAME, GNUNET_log, GNUNET_OK, GNUNET_strdup, GNUNET_SYSERR, name, GnsRecordInfo::name, parse_record_data(), and GNUNET_JSON_Specification::ptr.

Referenced by GNUNET_GNSRECORD_JSON_spec_gnsrecord().

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clean_gnsrecordobject()

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

static

Cleanup data left from parsing the record.

Parameters

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

Definition at line 269 of file json_gnsrecord.c.

{
  struct GnsRecordInfo *gnsrecord_info = (struct GnsRecordInfo *) spec->ptr;
 
  GNUNET_free (gnsrecord_info);
}

References GNUNET_free, and GNUNET_JSON_Specification::ptr.

Referenced by GNUNET_GNSRECORD_JSON_spec_gnsrecord().

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