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package com.ruoyi.framework;
import cn.hutool.core.collection.CollUtil;
import cn.hutool.core.util.ArrayUtil;
import cn.hutool.core.util.StrUtil;
import com.ruoyi.common.exception.ServiceException;
import com.ruoyi.common.utils.spring.SpringUtils;
import lombok.extern.slf4j.Slf4j;
import org.apache.ibatis.cache.CacheKey;
import org.apache.ibatis.executor.Executor;
import org.apache.ibatis.mapping.BoundSql;
import org.apache.ibatis.mapping.MappedStatement;
import org.apache.ibatis.plugin.*;
import org.apache.ibatis.session.ResultHandler;
import org.apache.ibatis.session.RowBounds;
import java.util.*;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
@Intercepts({
@Signature(type = Executor.class, method = "query", args = {MappedStatement.class, Object.class, RowBounds.class, ResultHandler.class}),
@Signature(type = Executor.class, method = "query", args = {MappedStatement.class, Object.class, RowBounds.class, ResultHandler.class, CacheKey.class, BoundSql.class})
})
@Slf4j
public class TableFieldInterceptor implements Interceptor {
private final Map<String, List<String>> tableFieldProperties;
public TableFieldInterceptor() {
this.tableFieldProperties = SpringUtils.getBean("tableInterceptorPropertiesValue");
}
public static String preprocessSql(String sql) {
String regexAES = "AES_DECRYPT\\(UNHEX\\(([^)]+)\\), '([^']+)'\\)(?:\\s+AS\\s+([^,\\s]+))?";
Pattern patternAES = Pattern.compile(regexAES, Pattern.CASE_INSENSITIVE);
Matcher matcherAES = patternAES.matcher(sql);
StringBuffer result = new StringBuffer();
while (matcherAES.find()) {
String alias = matcherAES.group(3) != null ? matcherAES.group(3).trim() : "";
matcherAES.appendReplacement(result, alias.isEmpty() ? "''" : "'' AS " + alias);
}
matcherAES.appendTail(result);
String regexConvert = "CONVERT\\(([^)]+)\\s+USING\\s+utf8\\)(?:\\s+AS\\s+([^,\\s]+))?";
Pattern patternConvert = Pattern.compile(regexConvert, Pattern.CASE_INSENSITIVE);
Matcher matcherConvert = patternConvert.matcher(result.toString());
result = new StringBuffer();
while (matcherConvert.find()) {
String alias = matcherConvert.group(2) != null ? matcherConvert.group(2).trim() : "";
matcherConvert.appendReplacement(result, alias.isEmpty() ? "''" : "'' AS " + alias);
}
matcherConvert.appendTail(result);
regexAES = "AES_DECRYPT\\(UNHEX\\(([^)]+)\\), '([^']+)'\\)";
patternAES = Pattern.compile(regexAES, Pattern.CASE_INSENSITIVE);
matcherAES = patternAES.matcher(result.toString());
result = new StringBuffer();
while (matcherAES.find()) {
matcherAES.appendReplacement(result, "''");
}
matcherAES.appendTail(result);
regexConvert = "CONVERT\\(([^)]+)\\s+USING\\s+utf8\\)";
patternConvert = Pattern.compile(regexConvert, Pattern.CASE_INSENSITIVE);
matcherConvert = patternConvert.matcher(result.toString());
result = new StringBuffer();
while (matcherConvert.find()) {
matcherConvert.appendReplacement(result, "''");
}
matcherConvert.appendTail(result);
return result.toString();
}
@Override
public Object intercept(Invocation invocation) throws Throwable {
if (CollUtil.isEmpty(tableFieldProperties)) {
return invocation.proceed();
}
MappedStatement mappedStatement = (MappedStatement) invocation.getArgs()[0];
String sql = mappedStatement.getBoundSql(invocation.getArgs()[1]).getSql();
sql = preprocessSql(sql);
log.warn("{}", sql);
SqlParserUtil.SqlDetails sqlDetails = null;
try {
sqlDetails = SqlParserUtil.parseSql(sql);
} catch (Exception e) {
e.printStackTrace();
log.error(" 解析失败：id:{},sql{}",mappedStatement.getId(),sql);
throw new RuntimeException();
}
log.warn("sqlDetails：{}", sqlDetails);
log.debug("Original SQL: {}", sql);
AtomicBoolean shouldReturnEmpty = new AtomicBoolean(true);
try {
String finalSql = sql;
SqlParserUtil.SqlDetails finalSqlDetails = sqlDetails;
tableFieldProperties.forEach((tableName, conditions) -> {
log.warn("{}{}", tableName, conditions);
if (StrUtil.containsIgnoreCase(finalSql, tableName)) {
conditions.forEach(condition -> {
String[] fields = condition.split(",");
shouldReturnEmpty.set(false);
List< Object> explainedColumns = finalSqlDetails.getTableFieldMap().get(tableName);
if (CollUtil.isNotEmpty(explainedColumns) && ArrayUtil.containsAny(explainedColumns.toArray(), fields)) {
shouldReturnEmpty.set(true);
}
if (!shouldReturnEmpty.get()) {
throw new ServiceException("");
}
});
}
});
} catch (Exception ignored) {
}
if (!shouldReturnEmpty.get()) {
log.warn("SQL contains sensitive table and field, returning empty result.");
return handleEmptyResult(mappedStatement);
}
return invocation.proceed();
}
private Object handleEmptyResult(MappedStatement mappedStatement) {
if (mappedStatement.getSqlCommandType().ordinal() == 2) {
return 0;
} else {
return new ArrayList<>();
}
}
@Override
public Object plugin(Object target) {
return Plugin.wrap(target, this);
}
@Override
public void setProperties(Properties properties) {
}
}
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