From dc17316856f735278a8f76303b75cb2835a3a4e9 Mon Sep 17 00:00:00 2001
From: pricelees <priceelees@gmail.com>
Date: Wed, 1 Oct 2025 10:51:58 +0900
Subject: [PATCH] =?UTF-8?q?feat:=20Base64=20=ED=98=95=EC=8B=9D=EC=9D=98=20?=
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---
 .../web/supports/SecretKeyInterceptor.kt      | 39 +++++++++++++++++++
 .../web/supports/TosspayMvcConfig.kt          | 15 +++++++
 2 files changed, 54 insertions(+)
 create mode 100644 tosspay-mock/src/main/kotlin/com/sangdol/tosspaymock/web/supports/SecretKeyInterceptor.kt
 create mode 100644 tosspay-mock/src/main/kotlin/com/sangdol/tosspaymock/web/supports/TosspayMvcConfig.kt

diff --git a/tosspay-mock/src/main/kotlin/com/sangdol/tosspaymock/web/supports/SecretKeyInterceptor.kt b/tosspay-mock/src/main/kotlin/com/sangdol/tosspaymock/web/supports/SecretKeyInterceptor.kt
new file mode 100644
index 00000000..9608478d
--- /dev/null
+++ b/tosspay-mock/src/main/kotlin/com/sangdol/tosspaymock/web/supports/SecretKeyInterceptor.kt
@@ -0,0 +1,39 @@
+package com.sangdol.tosspaymock.web.supports
+
+import com.sangdol.tosspaymock.exception.TosspayException
+import com.sangdol.tosspaymock.exception.code.TosspayConfirmErrorCode
+import jakarta.servlet.http.HttpServletRequest
+import jakarta.servlet.http.HttpServletResponse
+import org.springframework.http.HttpHeaders
+import org.springframework.stereotype.Component
+import org.springframework.web.method.HandlerMethod
+import org.springframework.web.servlet.HandlerInterceptor
+import java.util.*
+
+@Component
+class SecretKeyInterceptor : HandlerInterceptor {
+
+    companion object {
+        val basicAuthRegex = Regex("Basic (.*)")
+    }
+
+    override fun preHandle(
+        request: HttpServletRequest,
+        response: HttpServletResponse,
+        handler: Any
+    ): Boolean {
+        if (handler !is HandlerMethod) return true
+
+        val basicAuthSecretKey: String = request.getHeader(HttpHeaders.AUTHORIZATION)
+            ?: throw TosspayException(TosspayConfirmErrorCode.INVALID_API_KEY)
+
+        return try {
+            val secretKey = basicAuthRegex.find(basicAuthSecretKey)!!.groupValues[1]
+            Base64.getDecoder().decode(secretKey)
+
+            true
+        } catch (_: Exception) {
+            throw TosspayException(TosspayConfirmErrorCode.UNAUTHORIZED_KEY)
+        }
+    }
+}
diff --git a/tosspay-mock/src/main/kotlin/com/sangdol/tosspaymock/web/supports/TosspayMvcConfig.kt b/tosspay-mock/src/main/kotlin/com/sangdol/tosspaymock/web/supports/TosspayMvcConfig.kt
new file mode 100644
index 00000000..952b49f8
--- /dev/null
+++ b/tosspay-mock/src/main/kotlin/com/sangdol/tosspaymock/web/supports/TosspayMvcConfig.kt
@@ -0,0 +1,15 @@
+package com.sangdol.tosspaymock.web.supports
+
+import org.springframework.context.annotation.Configuration
+import org.springframework.web.servlet.config.annotation.InterceptorRegistry
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer
+
+@Configuration
+class TosspayMvcConfig(
+    private val secretKeyInterceptor: SecretKeyInterceptor
+) : WebMvcConfigurer {
+
+    override fun addInterceptors(registry: InterceptorRegistry) {
+        registry.addInterceptor(secretKeyInterceptor)
+    }
+}