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103 lines
3.3 KiB
C++
Executable File
103 lines
3.3 KiB
C++
Executable File
// Copyright (C) 2022 Check Point Software Technologies Ltd. All rights reserved.
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// Licensed under the Apache License, Version 2.0 (the "License");
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef __PARSER_JSON_H__a94f1be2
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#define __PARSER_JSON_H__a94f1be2
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#include <string.h>
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#include <vector>
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#include "ParserBase.h"
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#include "KeyStack.h"
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#include "yajl/yajl_parse.h"
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#include "singleton.h"
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#include "i_oa_schema_updater.h"
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// must be at least 4 first bytes to allow unicode autodetection (BOM).
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// BUT... reduced to 1 in order to allow better work of schema validation and API discovery
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#define FIRST_JSON_BUFFER_SIZE 1
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typedef size_t yajl_size_t;
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class ParserJson :
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public ParserBase,
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Singleton::Consume<I_OASUpdater> {
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public:
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ParserJson(
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IParserReceiver &receiver,
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size_t parser_depth=0,
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IWaf2Transaction *pTransaction = nullptr,
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bool should_collect_for_oa_schema_updater=false,
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IParserReceiver2 *receiver2=NULL);
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virtual ~ParserJson();
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size_t push(const char *data, size_t data_len);
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void finish();
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virtual const std::string &name() const;
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bool error() const;
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virtual size_t depth() { return (m_key.depth() > 0) ? m_key.depth()-1 : m_key.depth(); }
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private:
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int cb_null();
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int cb_boolean(int boolean);
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int cb_number(const char *s, yajl_size_t slen);
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int cb_string(const unsigned char *s, yajl_size_t slen);
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int cb_map_key(const unsigned char *s, yajl_size_t slen);
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int cb_start_map();
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int cb_end_map();
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int cb_start_array();
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int cb_end_array();
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// Static callbacks to be called from C
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static int p_null(void *ctx);
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static int p_boolean(void *ctx, int boolean);
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static int p_number(void *ctx, const char *s, yajl_size_t slen);
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static int p_string(void *ctx, const unsigned char *s, yajl_size_t slen);
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static int p_map_key(void *ctx, const unsigned char *s, yajl_size_t slen);
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static int p_start_map(void *ctx);
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static int p_end_map(void *ctx);
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static int p_start_array(void *ctx);
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static int p_end_array(void *ctx);
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enum state {
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s_start,
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s_accumulate_first_bytes,
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s_start_parsing,
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s_parsing,
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s_error
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};
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enum js_state {
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js_array,
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js_map
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};
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IParserReceiver &m_receiver;
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IParserReceiver2 *m_receiver2;
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enum state m_state;
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// buffer first few bytes of stream
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// (required before calling JSON parser for the first time so it can recognize stuff like UTF-8 BOM)
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char m_buf[FIRST_JSON_BUFFER_SIZE];
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size_t m_bufLen;
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// Key and structure depth stacks
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KeyStack m_key;
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std::vector<enum js_state> m_depthStack;
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yajl_handle m_jsonHandler;
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bool is_map_empty;
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bool should_collect_for_oa_schema_updater;
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IWaf2Transaction *m_pTransaction;
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size_t m_parser_depth;
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bool is_graphql_operation_name;
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public:
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static const std::string m_parserName;
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};
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#endif // __PARSER_JSON_H__a94f1be2
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