/*
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* Copyright (c) 2018-2028, DreamLu All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* Neither the name of the dreamlu.net developer nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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* Author: DreamLu 卢春梦 (596392912@qq.com)
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*/
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package org.springblade.core.api.crypto.core;
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import lombok.RequiredArgsConstructor;
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import org.springblade.core.api.crypto.annotation.decrypt.ApiDecrypt;
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import org.springblade.core.api.crypto.bean.CryptoInfoBean;
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import org.springblade.core.api.crypto.config.ApiCryptoProperties;
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import org.springblade.core.api.crypto.util.ApiCryptoUtil;
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import org.springblade.core.tool.jackson.JsonUtil;
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import org.springblade.core.tool.utils.Charsets;
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import org.springblade.core.tool.utils.StringUtil;
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import org.springframework.core.MethodParameter;
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import org.springframework.core.annotation.AnnotatedElementUtils;
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import org.springframework.lang.Nullable;
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import org.springframework.web.bind.support.WebDataBinderFactory;
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import org.springframework.web.context.request.NativeWebRequest;
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import org.springframework.web.method.support.HandlerMethodArgumentResolver;
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import org.springframework.web.method.support.ModelAndViewContainer;
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import java.lang.reflect.Parameter;
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/**
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* param 参数 解析
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*
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* @author L.cm
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*/
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@RequiredArgsConstructor
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public class ApiDecryptParamResolver implements HandlerMethodArgumentResolver {
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private final ApiCryptoProperties properties;
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@Override
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public boolean supportsParameter(MethodParameter parameter) {
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return AnnotatedElementUtils.hasAnnotation(parameter.getParameter(), ApiDecrypt.class);
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}
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@Nullable
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@Override
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public Object resolveArgument(MethodParameter methodParameter, ModelAndViewContainer mavContainer,
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NativeWebRequest webRequest, WebDataBinderFactory binderFactory) {
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Parameter parameter = methodParameter.getParameter();
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ApiDecrypt apiDecrypt = AnnotatedElementUtils.getMergedAnnotation(parameter, ApiDecrypt.class);
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String text = webRequest.getParameter(properties.getParamName());
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if (StringUtil.isBlank(text)) {
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return null;
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}
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CryptoInfoBean infoBean = new CryptoInfoBean(apiDecrypt.value(), apiDecrypt.secretKey());
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byte[] textBytes = text.getBytes(Charsets.UTF_8);
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byte[] decryptData = ApiCryptoUtil.decryptData(properties, textBytes, infoBean);
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return JsonUtil.readValue(decryptData, parameter.getType());
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}
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}
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