1 files changed, 82 insertions, 0 deletions
diff --git a/lib/saml/sp-metadata.ts b/lib/saml/sp-metadata.ts
new file mode 100644
index 00000000..7f25f602
--- /dev/null
+++ b/lib/saml/sp-metadata.ts
@@ -0,0 +1,82 @@
+// SAML Service Provider (SP) 메타데이터 유틸리티
+
+export interface SPAssertionConsumerService {
+  binding: string
+  location: string
+  index: number
+  isDefault?: boolean
+}
+
+export interface SPMetadata {
+  entityId: string
+  // SPSSODescriptor 속성들
+  protocolSupportEnumeration: string[]
+  authnRequestsSigned: boolean
+  wantAssertionsSigned: boolean
+  // 서비스 엔드포인트들
+  assertionConsumerServices: SPAssertionConsumerService[]
+  // 편의를 위한 기본값들
+  defaultACS: SPAssertionConsumerService
+  callbackUrl: string
+}
+
+// SP 메타데이터 가져오기 (환경변수 기반)
+export function getSPMetadata(): SPMetadata {
+  console.log('🔍 Loading SP metadata from environment variables...')
+  
+  // 필수 환경변수 검증
+  const entityId = process.env.SAML_SP_ENTITY_ID
+  const callbackUrl = process.env.SAML_SP_CALLBACK_URL || `${process.env.NEXTAUTH_URL}/api/saml/callback`
+  
+  if (!entityId) {
+    throw new Error('Required SAML environment variable is missing: SAML_SP_ENTITY_ID')
+  }
+
+  if (!callbackUrl) {
+    throw new Error('SAML_SP_CALLBACK_URL or NEXTAUTH_URL environment variable is required')
+  }
+
+  // AssertionConsumerService 구성
+  const assertionConsumerServices: SPAssertionConsumerService[] = [
+    // 기본 HTTP-POST 바인딩
+    {
+      binding: process.env.SAML_SP_ACS_BINDING_PRIMARY || 'urn:oasis:names:tc:SAML:2.0:bindings:HTTP-POST',
+      location: callbackUrl,
+      index: 0,
+      isDefault: true
+    }
+  ]
+
+  // 보조 HTTP-Redirect 바인딩 (선택사항)
+  const secondaryBinding = process.env.SAML_SP_ACS_BINDING_SECONDARY
+  if (secondaryBinding) {
+    assertionConsumerServices.push({
+      binding: secondaryBinding,
+      location: callbackUrl,
+      index: 1,
+      isDefault: false
+    })
+  }
+
+  const metadata: SPMetadata = {
+    entityId,
+    protocolSupportEnumeration: [
+      process.env.SAML_SP_PROTOCOL_SUPPORT || 'urn:oasis:names:tc:SAML:2.0:protocol'
+    ],
+    authnRequestsSigned: process.env.SAML_SP_AUTHN_REQUESTS_SIGNED === 'true',
+    wantAssertionsSigned: process.env.SAML_SP_WANT_ASSERTIONS_SIGNED === 'true',
+    assertionConsumerServices,
+    defaultACS: assertionConsumerServices[0],
+    callbackUrl
+  }
+
+  console.log('✅ SP metadata loaded from environment variables:', {
+    entityId,
+    callbackUrl,
+    authnRequestsSigned: metadata.authnRequestsSigned,
+    wantAssertionsSigned: metadata.wantAssertionsSigned,
+    acsCount: assertionConsumerServices.length
+  })
+
+  return metadata
+} 
+\ No newline at end of file