C++ (Cpp) json_message_free_tokens Examples

Example #1

File: json-streamer.c Project: CTU-IIG/qemu

void json_message_parser_destroy(JSONMessageParser *parser)
{
    json_lexer_destroy(&parser->lexer);
    json_message_free_tokens(parser);
}

Example #2

File: json-streamer.c Project: CTU-IIG/qemu

void json_message_process_token(JSONLexer *lexer, GString *input,
                                JSONTokenType type, int x, int y)
{
    JSONMessageParser *parser = container_of(lexer, JSONMessageParser, lexer);
    QObject *json = NULL;
    Error *err = NULL;
    JSONToken *token;

    switch (type) {
    case JSON_LCURLY:
        parser->brace_count++;
        break;
    case JSON_RCURLY:
        parser->brace_count--;
        break;
    case JSON_LSQUARE:
        parser->bracket_count++;
        break;
    case JSON_RSQUARE:
        parser->bracket_count--;
        break;
    case JSON_ERROR:
        error_setg(&err, "JSON parse error, stray '%s'", input->str);
        goto out_emit;
    case JSON_END_OF_INPUT:
        if (g_queue_is_empty(&parser->tokens)) {
            return;
        }
        json = json_parser_parse(&parser->tokens, parser->ap, &err);
        goto out_emit;
    default:
        break;
    }

    /*
     * Security consideration, we limit total memory allocated per object
     * and the maximum recursion depth that a message can force.
     */
    if (parser->token_size + input->len + 1 > MAX_TOKEN_SIZE) {
        error_setg(&err, "JSON token size limit exceeded");
        goto out_emit;
    }
    if (g_queue_get_length(&parser->tokens) + 1 > MAX_TOKEN_COUNT) {
        error_setg(&err, "JSON token count limit exceeded");
        goto out_emit;
    }
    if (parser->bracket_count + parser->brace_count > MAX_NESTING) {
        error_setg(&err, "JSON nesting depth limit exceeded");
        goto out_emit;
    }

    token = json_token(type, x, y, input);
    parser->token_size += input->len;

    g_queue_push_tail(&parser->tokens, token);

    if ((parser->brace_count > 0 || parser->bracket_count > 0)
        && parser->bracket_count >= 0 && parser->bracket_count >= 0) {
        return;
    }

    json = json_parser_parse(&parser->tokens, parser->ap, &err);

out_emit:
    parser->brace_count = 0;
    parser->bracket_count = 0;
    json_message_free_tokens(parser);
    parser->token_size = 0;
    parser->emit(parser->opaque, json, err);
}

Example #3

File: json-streamer.c Project: 8tab/qemu

static void json_message_process_token(JSONLexer *lexer, GString *input,
                                       JSONTokenType type, int x, int y)
{
    JSONMessageParser *parser = container_of(lexer, JSONMessageParser, lexer);
    JSONToken *token;
    GQueue *tokens;

    switch (type) {
    case JSON_LCURLY:
        parser->brace_count++;
        break;
    case JSON_RCURLY:
        parser->brace_count--;
        break;
    case JSON_LSQUARE:
        parser->bracket_count++;
        break;
    case JSON_RSQUARE:
        parser->bracket_count--;
        break;
    default:
        break;
    }

    token = g_malloc(sizeof(JSONToken) + input->len + 1);
    token->type = type;
    memcpy(token->str, input->str, input->len);
    token->str[input->len] = 0;
    token->x = x;
    token->y = y;

    parser->token_size += input->len;

    g_queue_push_tail(parser->tokens, token);

    if (type == JSON_ERROR) {
        goto out_emit_bad;
    } else if (parser->brace_count < 0 ||
        parser->bracket_count < 0 ||
        (parser->brace_count == 0 &&
         parser->bracket_count == 0)) {
        goto out_emit;
    } else if (parser->token_size > MAX_TOKEN_SIZE ||
               g_queue_get_length(parser->tokens) > MAX_TOKEN_COUNT ||
               parser->bracket_count + parser->brace_count > MAX_NESTING) {
        /* Security consideration, we limit total memory allocated per object
         * and the maximum recursion depth that a message can force.
         */
        goto out_emit_bad;
    }

    return;

out_emit_bad:
    /*
     * Clear out token list and tell the parser to emit an error
     * indication by passing it a NULL list
     */
    json_message_free_tokens(parser);
out_emit:
    /* send current list of tokens to parser and reset tokenizer */
    parser->brace_count = 0;
    parser->bracket_count = 0;
    /* parser->emit takes ownership of parser->tokens.  Remove our own
     * reference to parser->tokens before handing it out to parser->emit.
     */
    tokens = parser->tokens;
    parser->tokens = g_queue_new();
    parser->emit(parser, tokens);
    parser->token_size = 0;
}