📮 카카오 Oauth 구현 && 백엔드 연동

[heejinnn]

작업 이유

백엔드와 연동하여 kakao oauth를 처리하였다.

작업 사항

kakao oauth 동작 과정

1. kakao 로그인
2. 기존에 fit a pet에 등록된 사용자가 아닌 경우 => 전화번호 인증 후 회원가입
3. 기존에 등록된 사용자인 경우 => 바로 로그인

• nonce, id, phone, provider는 상수로 관리하였다.

enum OauthInfo{
    static var oauthId = 0
    static var phoneNum = ""
    static var nonce = ""
    static var provider = ""
}

• idToken은 KeyChain을 사용하여 관리하였다.

static func saveTempToken(tempToken: String) {
    let passwordQuery: [CFString: Any] = [
        kSecClass: kSecClassGenericPassword,
        kSecAttrAccount: "tempToken",
        kSecValueData: tempToken.data(using: .utf8)!,
    ]
    
    let status = SecItemAdd(passwordQuery as CFDictionary, nil)
    if status == errSecDuplicateItem {
        SecItemUpdate(passwordQuery as CFDictionary, [kSecValueData: tempToken.data(using: .utf8)!] as CFDictionary)
    } else if status != noErr {
        print("Failed to save tempToken to Keychain")
    }
}

static func loadTempToken() -> String? {
    let query: [CFString: Any] = [
        kSecClass: kSecClassGenericPassword,
        kSecAttrAccount: "tempToken",
        kSecReturnData: kCFBooleanTrue!,
    ]

    var item: CFTypeRef?
    let status = SecItemCopyMatching(query as CFDictionary, &item)

    if status == noErr, let data = item as? Data, let token = String(data: data, encoding: .utf8) {
        return token
    } else {
        return nil
    }
}

1️⃣ kakao 로그인

• POST /api/v1/auth/oauth?provider={}
• body: ["id": Int, "idToken": String, "nonce": String]
• query: provider = [String]
• header:

case .oauthLogin:
    let idToken = KeychainHelper.loadTempToken()!
    
    let bodyParameters = ["id": OauthInfo.oauthId, "idToken": idToken, "nonce": OauthInfo.nonce] as [String : Any]
    let queryParameters = [URLQueryItem(name: "provider", value: OauthInfo.provider)]
    
    request = createURLRequestWithBodyAndQuery(url: url, bodyParameters: bodyParameters, queryParameters: queryParameters)

2️⃣ kakao oauth 인증코드 발신

• POST /api/v1/auth/oauth/{oauthid}/sms?provider={}
• body: ["to": String, "idToken": String, "nonce": String]
• query: provider = [String]
• header:

case .oauthSendSms:
    let idToken = KeychainHelper.loadTempToken()!
    
    let bodyParameters = ["to": OauthInfo.phoneNum, "idToken": idToken, "nonce": OauthInfo.nonce] as [String : Any]
    let queryParameters = [URLQueryItem(name: "provider", value: OauthInfo.provider)]
    
    request = createURLRequestWithBodyAndQuery(url: url, bodyParameters: bodyParameters, queryParameters: queryParameters)

3️⃣ kakao oauth 인증코드 인증

• POST /api/v1/auth/oauth/{oauthid}/sms?provider={}&code={}
• body: ["to": String, "idToken": String, "nonce": String]
• query: provider = [String], code = [String]
• header:

 case .oauthCheckSms(let code):
    let idToken = KeychainHelper.loadTempToken()!
    
    let bodyParameters = ["to": OauthInfo.phoneNum, "idToken": idToken, "nonce": OauthInfo.nonce] as [String : Any]
    let queryParameters = [URLQueryItem(name: "provider", value: OauthInfo.provider), URLQueryItem(name: "code", value: code)]
    
    request = createURLRequestWithBodyAndQuery(url: url, bodyParameters: bodyParameters, queryParameters: queryParameters)

4️⃣ kakao oauth 회원가입

• POST /api/v1/auth/oauth/{oauthid}?provider={}
• body: ["name": String, "uid": String, "idToken": String, "nonce": String]
• query: provider = [String]
• header: accessToken

 case .oauthRegistUser(let name, let uid):
    let idToken = KeychainHelper.loadTempToken()!
    
    let bodyParameters = ["name": name, "uid": uid, "idToken": idToken, "nonce": OauthInfo.nonce] as [String : Any]
    let queryParameters = [URLQueryItem(name: "provider", value: OauthInfo.provider)]
    
    if let accessToken = KeychainHelper.loadAccessToken() {
        request = createURLRequestWithBodyAndQuery(url: url, bodyParameters: bodyParameters, queryParameters: queryParameters)
        request.setValue("Bearer \(accessToken)", forHTTPHeaderField: "Authorization")
    } else {
        request = createURLRequestWithBodyAndQuery(url: url, bodyParameters: bodyParameters, queryParameters: queryParameters)
    }

이슈 연결

#40
#12

[psychology50]

15시 30분에 다시 읽어보고 승인할게요

[psychology50]

오늘 저녁 회의 때 정상적으로 실행되는 거 확인해보면 될 것 같아요.
수고하셨습니다.