Netsuite Oauth 1.0 authentication from swift iOS

I am trying to integrate netsuite modules in iOS application. I am not able generate proper oauth signature for the header. I have tried using 'OAuthSwift' library for this purpose, but I have no proper idea on how to add the headers like oauth_nonce, oauth_signature. I have searched many websites and checked stackoverflow references but found none for my requirement.

As per the comment I followed the java code posted [https://stackoverflow.com/questions/51286409/netsuite-token-based-authentication].

Here is the code I have worked on. The response I got is INVALID_LOGIN_ATTEMPT. My guess is, maybe the OAUTH_Signature is wrong. Please help me.

 import UIKit   import CommonCrypto     class ViewController: UIViewController {      var OAuth = "";     override func viewDidLoad() {         super.viewDidLoad()       var oauth_val = mediate();                  let url = URL(string: "https://5250636-sb2.restlets.api.netsuite.com/app/site/hosting/restlet.nl?script=2162&deploy=1")      guard let requestUrl = url else { fatalError() }      // Create URL Request      var request = URLRequest(url: requestUrl)      // Specify HTTP Method to use      request.httpMethod = "GET"            //http header            request.setValue("application/json", forHTTPHeaderField: "Accept")      request.setValue("application/json", forHTTPHeaderField: "Content-Type")      request.setValue(oauth_val, forHTTPHeaderField: "Authorization")            // Send HTTP Request      let task = URLSession.shared.dataTask(with: request) { (data, response, error) in                    // Check if Error took place          if let error = error {              print("Error took place \(error)")              return          }                    // Read HTTP Response Status code          if let response = response as? HTTPURLResponse {              print("Response HTTP Status code: \(response.statusCode)")          }                    // Convert HTTP Response Data to a simple String          if let data = data, let dataString = String(data: data, encoding: .utf8) {              print("Response data string:\n \(dataString)")          }                }      task.resume()     }  func randomString(length: Int) -> String {    let letters = "2312312312312sadadadadNKSNSKMSLMXSX"    return String((0..<length).map{ _ in letters.randomElement()! })  }      func computeSignature(baseString: String, keyString: String) -> String  {      let hmacResult:String = keyString.hmac(algorithm: HMACAlgorithm.SHA1, key: keyString)      return hmacResult  }      func mediate()-> String  {      let base_url =  "baseurl"      let http_method =  "GET"      var token_id = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"      var token_secret = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"      var consumerkey = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"      var consumer_secret = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"      var SIGNATURE_METHOD = "HMAC-SHA1"      var OAUTH_NONCE = randomString(length: 20)      var TIME_STAMP = String(Date().toMillis())      var OAUTH_VERSION = "1.0"      var SCRIPT_DEPLOYMENT_ID = "xxx"      var SCRIPT_ID = "xxx"      var REALM = "xxxxx"                var encdata = ""      encdata = encdata + "deploy=" + SCRIPT_DEPLOYMENT_ID + "&"      encdata = encdata + "oauth_consumer_key=" + consumerkey + "&"      encdata = encdata + "oauth_nonce=" + OAUTH_NONCE + "&"      encdata = encdata + "oauth_signature_method=" + SIGNATURE_METHOD + "&"      encdata = encdata + "oauth_timestamp=" + TIME_STAMP + "&"      encdata = encdata + "oauth_token=" + token_id + "&"      encdata = encdata + "oauth_version=" + OAUTH_VERSION + "&"      encdata = encdata + "script=" + SCRIPT_ID                let encodeData = encdata.urlEncoded()!            let completeData = http_method + "&"  + base_url.urlEncoded()! + "&" + encodeData            var key = "";            key = consumer_secret.urlEncoded()! + "&" + token_secret.urlEncoded()!            var signature = computeSignature(baseString: completeData, keyString: key)                    OAuth = "OAuth realm=\"" + REALM + "\",";                  OAuth = OAuth + "oauth_consumer_key=\"" + consumerkey + "\",";                  OAuth = OAuth + "oauth_token=\"" + token_id + "\",";                  OAuth = OAuth + "oauth_signature_method=\"HMAC-SHA1\",";                  OAuth = OAuth + "oauth_timestamp=\"" + TIME_STAMP + "\",";                  OAuth = OAuth + "oauth_nonce=\"" + OAUTH_NONCE + "\",";                  OAuth = OAuth + "oauth_version=\"" + "1.0" + "\",";                  OAuth = OAuth + "oauth_signature=\"" + signature + "\"";                  return OAuth;  }        func printCharactersInSet(set: NSCharacterSet) {      var characters = ""      let iSet = set.inverted      for i: UInt32 in 32..<127 {          let c = Character(UnicodeScalar(UInt32(i))!)          if iSet.hasMember(inPlane: UInt8(i))          {              characters = characters + String(c)          }      }      print("characters not in set: \'\(characters)\'")  }   }       enum HMACAlgorithm {  case MD5, SHA1, SHA224, SHA256, SHA384, SHA512    func toCCHmacAlgorithm() -> CCHmacAlgorithm {      var result: Int = 0      switch self {      case .MD5:          result = kCCHmacAlgMD5      case .SHA1:          result = kCCHmacAlgSHA1      case .SHA224:          result = kCCHmacAlgSHA224      case .SHA256:          result = kCCHmacAlgSHA256      case .SHA384:          result = kCCHmacAlgSHA384      case .SHA512:          result = kCCHmacAlgSHA512      }      return CCHmacAlgorithm(result)  }    func digestLength() -> Int {      var result: CInt = 0      switch self {      case .MD5:          result = CC_MD5_DIGEST_LENGTH      case .SHA1:          result = CC_SHA1_DIGEST_LENGTH      case .SHA224:          result = CC_SHA224_DIGEST_LENGTH      case .SHA256:          result = CC_SHA256_DIGEST_LENGTH      case .SHA384:          result = CC_SHA384_DIGEST_LENGTH      case .SHA512:          result = CC_SHA512_DIGEST_LENGTH      }      return Int(result)  }   }   extension String {  func hmac(algorithm: HMACAlgorithm, key: String) -> String {      let cKey = key.cString(using: String.Encoding.utf8)      let cData = self.cString(using: String.Encoding.utf8)      var result = [CUnsignedChar](repeating: 0, count: Int(algorithm.digestLength()))      CCHmac(algorithm.toCCHmacAlgorithm(), cKey!, strlen(cKey!), cData!, strlen(cData!), &result)      let hmacData:NSData = NSData(bytes: result, length: (Int(algorithm.digestLength())))      let hmacBase64 = hmacData.base64EncodedString(options: NSData.Base64EncodingOptions.lineLength76Characters)// Encoding76CharacterLineLength)      return String(hmacBase64)  }    var urlEncoded: String {      let customAllowedSet = CharacterSet(charactersIn: "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-._~")      return self.addingPercentEncoding(withAllowedCharacters: customAllowedSet)!  }    var urlQueryEncoded: String? {      return self.addingPercentEncoding(withAllowedCharacters: CharacterSet.urlQueryAllowed)  }    func substring(to offset: String.IndexDistance) -> String {      let to = self.index(self.startIndex, offsetBy: offset)      return String(self[..<to])  }   }     extension Dictionary {    var urlEncodedQuery: String {      var parts = [String]()        for (key, value) in self {          let keyString = "\(key)".urlEncoded          let valueString = "\(value)".urlEncoded          let query = "\(keyString)=\(valueString)"          parts.append(query)      }        return parts.joined(separator: "&")  }   }     extension Date {  func toMillis() -> Int64! {      return Int64(self.timeIntervalSince1970 * 1000)  }   }   extension StringProtocol {  var containsLetters: Bool { contains { $0.isLetter } }   }       public extension CharacterSet {    static let urlQueryParameterAllowed = CharacterSet.urlQueryAllowed.subtracting(CharacterSet(charactersIn: "&?"))    static let urlQueryDenied           = CharacterSet.urlQueryAllowed.inverted()  static let urlQueryKeyValueDenied   = CharacterSet.urlQueryParameterAllowed.inverted()  static let urlPathDenied            = CharacterSet.urlPathAllowed.inverted()  static let urlFragmentDenied        = CharacterSet.urlFragmentAllowed.inverted()  static let urlHostDenied            = CharacterSet.urlHostAllowed.inverted()    static let urlDenied                = CharacterSet.urlQueryDenied      .union(.urlQueryKeyValueDenied)      .union(.urlPathDenied)      .union(.urlFragmentDenied)      .union(.urlHostDenied)      func inverted() -> CharacterSet {      var copy = self      copy.invert()      return copy  }   }         public extension String {  func urlEncoded(denying deniedCharacters: CharacterSet = .urlDenied) -> String? {      return addingPercentEncoding(withAllowedCharacters: deniedCharacters.inverted())  }   }  

https://stackoverflow.com/questions/66113586/netsuite-oauth-1-0-authentication-from-swift-ios February 09, 2021 at 01:42PM