forked from osmocom/wireshark
f53be88408
To check if a payload is json, the library libjsmn has been added to the source tree, with its licence (MIT). TODO: the libjsmn can be used to extract tokens in the standard dissection other than heurisitic part. HPFEEDS dissector has also been changed in order to leverage the new json dissector. Bug: 10834 Change-Id: Ib1df2a699982dbdd2b5418e97edbdb5cbd9c8978 Reviewed-on: https://code.wireshark.org/review/6350 Petri-Dish: Alexis La Goutte <alexis.lagoutte@gmail.com> Reviewed-by: Alexis La Goutte <alexis.lagoutte@gmail.com> Reviewed-by: Michael Mann <mmann78@netscape.net>
112 lines
3 KiB
C
112 lines
3 KiB
C
/*
|
|
* Copyright (c) 2010 Serge A. Zaitsev
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*/
|
|
|
|
#ifndef __JSMN_H_
|
|
#define __JSMN_H_
|
|
|
|
#include <stddef.h>
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/**
|
|
* JSON type identifier. Basic types are:
|
|
* o Object
|
|
* o Array
|
|
* o String
|
|
* o Other primitive: number, boolean (true/false) or null
|
|
*/
|
|
typedef enum {
|
|
JSMN_PRIMITIVE = 0,
|
|
JSMN_OBJECT = 1,
|
|
JSMN_ARRAY = 2,
|
|
JSMN_STRING = 3
|
|
} jsmntype_t;
|
|
|
|
typedef enum {
|
|
/* Not enough tokens were provided */
|
|
JSMN_ERROR_NOMEM = -1,
|
|
/* Invalid character inside JSON string */
|
|
JSMN_ERROR_INVAL = -2,
|
|
/* The string is not a full JSON packet, more bytes expected */
|
|
JSMN_ERROR_PART = -3
|
|
} jsmnerr_t;
|
|
|
|
/**
|
|
* JSON token description.
|
|
* type type (object, array, string etc.)
|
|
* start start position in JSON data string
|
|
* end end position in JSON data string
|
|
* size the size of the token
|
|
*/
|
|
typedef struct {
|
|
jsmntype_t type;
|
|
int start;
|
|
int end;
|
|
int size;
|
|
#ifdef JSMN_PARENT_LINKS
|
|
int parent;
|
|
#endif
|
|
} jsmntok_t;
|
|
|
|
/**
|
|
* JSON parser. Contains an array of token blocks available. Also stores
|
|
* the string being parsed now and current position in that string
|
|
*/
|
|
typedef struct {
|
|
unsigned int pos; /* offset in the JSON string */
|
|
unsigned int toknext; /* next token to allocate */
|
|
int toksuper; /* superior token node, e.g parent object or array */
|
|
} jsmn_parser;
|
|
|
|
/**
|
|
* Create JSON parser over an array of tokens
|
|
*/
|
|
void jsmn_init(jsmn_parser *parser);
|
|
|
|
/**
|
|
* Run JSON parser. It parses a JSON data string into and array of tokens, each describing
|
|
* a single JSON object.
|
|
*/
|
|
int jsmn_parse(jsmn_parser *parser, const char *js, size_t len,
|
|
jsmntok_t *tokens, unsigned int num_tokens);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* __JSMN_H_ */
|
|
|
|
/*
|
|
* Editor modelines - http://www.wireshark.org/tools/modelines.html
|
|
*
|
|
* Local variables:
|
|
* c-basic-offset: 4
|
|
* tab-width: 4
|
|
* indent-tabs-mode: nil
|
|
* End:
|
|
*
|
|
* vi: set shiftwidth=4 tabstop=4 expandtab:
|
|
* :indentSize=4:tabSize=4:noTabs=true:
|
|
*/
|