Examples with Token com.alibaba.druid.sql.parser.Token used on opensource projects

Example 11 with Token

use of com.alibaba.druid.sql.parser.Token in project druid by alibaba.

the class WallProvider method checkInternal.

private WallCheckResult checkInternal(String sql) {
    checkCount.incrementAndGet();
    WallContext context = WallContext.current();
    if (config.isDoPrivilegedAllow() && ispPrivileged()) {
        WallCheckResult checkResult = new WallCheckResult();
        checkResult.setSql(sql);
        return checkResult;
    }
    // first step, check whiteList
    boolean mulltiTenant = config.getTenantTablePattern() != null && config.getTenantTablePattern().length() > 0;
    if (!mulltiTenant) {
        WallCheckResult checkResult = checkWhiteAndBlackList(sql);
        if (checkResult != null) {
            checkResult.setSql(sql);
            return checkResult;
        }
    }
    hardCheckCount.incrementAndGet();
    final List<Violation> violations = new ArrayList<Violation>();
    List<SQLStatement> statementList = new ArrayList<SQLStatement>();
    boolean syntaxError = false;
    boolean endOfComment = false;
    try {
        SQLStatementParser parser = createParser(sql);
        parser.getLexer().setCommentHandler(WallCommentHandler.instance);
        if (!config.isCommentAllow()) {
            // deny comment
            parser.getLexer().setAllowComment(false);
        }
        if (!config.isCompleteInsertValuesCheck()) {
            parser.setParseCompleteValues(false);
            parser.setParseValuesSize(config.getInsertValuesCheckSize());
        }
        parser.parseStatementList(statementList);
        final Token lastToken = parser.getLexer().token();
        if (lastToken != Token.EOF && config.isStrictSyntaxCheck()) {
            violations.add(new IllegalSQLObjectViolation(ErrorCode.SYNTAX_ERROR, "not terminal sql, token " + lastToken, sql));
        }
        endOfComment = parser.getLexer().isEndOfComment();
    } catch (NotAllowCommentException e) {
        violations.add(new IllegalSQLObjectViolation(ErrorCode.COMMENT_STATEMENT_NOT_ALLOW, "comment not allow", sql));
        incrementCommentDeniedCount();
    } catch (ParserException e) {
        syntaxErrorCount.incrementAndGet();
        syntaxError = true;
        if (config.isStrictSyntaxCheck()) {
            violations.add(new SyntaxErrorViolation(e, sql));
        }
    } catch (Exception e) {
        if (config.isStrictSyntaxCheck()) {
            violations.add(new SyntaxErrorViolation(e, sql));
        }
    }
    if (statementList.size() > 1 && !config.isMultiStatementAllow()) {
        violations.add(new IllegalSQLObjectViolation(ErrorCode.MULTI_STATEMENT, "multi-statement not allow", sql));
    }
    WallVisitor visitor = createWallVisitor();
    visitor.setSqlEndOfComment(endOfComment);
    if (statementList.size() > 0) {
        boolean lastIsHint = false;
        for (int i = 0; i < statementList.size(); i++) {
            SQLStatement stmt = statementList.get(i);
            if ((i == 0 || lastIsHint) && stmt instanceof MySqlHintStatement) {
                lastIsHint = true;
                continue;
            }
            try {
                stmt.accept(visitor);
            } catch (ParserException e) {
                violations.add(new SyntaxErrorViolation(e, sql));
            }
        }
    }
    if (visitor.getViolations().size() > 0) {
        violations.addAll(visitor.getViolations());
    }
    WallSqlStat sqlStat = null;
    if (violations.size() > 0) {
        violationCount.incrementAndGet();
        if (sql.length() < MAX_SQL_LENGTH) {
            sqlStat = addBlackSql(sql, context.getTableStats(), context.getFunctionStats(), violations, syntaxError);
        }
    } else {
        if (sql.length() < MAX_SQL_LENGTH) {
            sqlStat = addWhiteSql(sql, context.getTableStats(), context.getFunctionStats(), syntaxError);
        }
    }
    Map<String, WallSqlTableStat> tableStats = null;
    Map<String, WallSqlFunctionStat> functionStats = null;
    if (context != null) {
        tableStats = context.getTableStats();
        functionStats = context.getFunctionStats();
        recordStats(tableStats, functionStats);
    }
    WallCheckResult result;
    if (sqlStat != null) {
        context.setSqlStat(sqlStat);
        result = new WallCheckResult(sqlStat, statementList);
    } else {
        result = new WallCheckResult(null, violations, tableStats, functionStats, statementList, syntaxError);
    }
    String resultSql;
    if (visitor.isSqlModified()) {
        resultSql = SQLUtils.toSQLString(statementList, dbType);
    } else {
        resultSql = sql;
    }
    result.setSql(resultSql);
    return result;
}