static void json_message_process_token(JSONLexer *lexer, GString *input, JSONTokenType type, int x, int y) { JSONMessageParser *parser = container_of(lexer, JSONMessageParser, lexer); QDict *dict; 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; } dict = qdict_new(); qdict_put(dict, "type", qint_from_int(type)); qdict_put(dict, "token", qstring_from_str(input->str)); qdict_put(dict, "x", qint_from_int(x)); qdict_put(dict, "y", qint_from_int(y)); parser->token_size += input->len; g_queue_push_tail(parser->tokens, dict); 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 || 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. */ parser->emit(parser, parser->tokens); parser->tokens = g_queue_new(); parser->token_size = 0; }