Introduction

If you’d like to use BioStar 2 New Local API as a RESTful API for your own customization or other purposes, you can simply reference this article. This article will cover the most basic usage of the BioStar 2 New Local API by C# console application. 

 

This is just a sample application made for those who might need to use the BioStar 2 New Local API. It is a Visual C# console application.

 

Features

This article will cover the function below:

  1. Register Visual Face via Send Email API
  2. Register Visual Face via Face Scanning by a device (FaceStation F2)

 

Through this article, you can learn how to call an API function to register Visual Face to the users in BioStar 2 server. There are 2 different ways to register Visual Face via New Local API.

 

Make sure you take a good look at the example code of the C# program built for API calls. You can simply copy & paste the source code to use the same function in your own integration. 

 

You can also see how to call the API functions via Postman, which is a program used for RESTful API calls.

 

*You must have FaceStation F2 connected to your BioStar 2.

 

 

 

Part 1. API Call & Parameters 

 

- Scanning Visual Face

 

[GET]: /api/devices/547834285/credentials/face?pose_sensitivity=0&nonBlock=true

[Parameters] 

Name

Type

*M/O

Explanation

Value

 

 

 

 

 

   * M – Mandatory, O – Optional

- Registering Visual Face

 

[PUT]: /api/users/{id}

[Parameters] 

Name

Type

*M/O

Explanation

Value

User/credentials/visualFaces

Array

O

Visual Face Information

 

Template_ex_normalized_image

String

O

Image name in Base64

 

Templates

Array

O

“template_ex”, “credential_bin_type”,

“template_ex_ir”

 

Templates/template_ex

String

O

Base64

“5”

Templates/credential_bin_type

String

O

Credential bin type

 

Templates/credential_ex_ir

String

O

Base64

 

Templates/credential_bin_type

String

O

Credential bin type

“6”

Flag

String

O

Flag

“1”

useProfile

String

O

Use as profile or not

True & False

   * M – Mandatory, O – Optional

 

Part 2. Request Body & Response Model

 

- Scanning Visual Face

[Example Value/Parameters Model]

 

 

[Response Model]

{

  "credentials": {

    "faces": [

      {

        "raw_image": "Base64: RDQQFJYAVUYvFXsEIzIQC1QYbodkHe...",

        "templates": [

          {

            "template": "Base64: RDQQFJYAVUYvFXsEIzIQC1QYbodkHe..."

          }

        ],

        "flag": "0"

      }

    ]

  },

  "Response": {

    "code": "1003",

    "link": "https://support.supremainc.com/en/support/home",

    "message": "Success"

  },

  "httpResponseStatus": 200

}

[Response: Fail]

{

    "Response": {

        "code": "262155",

        "link": "https://support.supremainc.com/en/support/home",

        "message": "not defined"

    }

}

[Response: Successful]

{

    "credentials": {

        "faces": [

            {

                   "template_ex_normalized_image": "/9j/4AAQSkZJRgABAQEASABI… ",

                "templates": [

                    {

                           "template_ex": "AAAAAAEA4gCFAe4AFQE8//7/…",

                           "credential_bin_type": "5"

                    },

                    {

                           "template_ex_ir": "AAAAAAEAHgGPAeIAHAEAAAAASlQ7RU…",

                           "credential_bin_type": "6"

                    }

                ],

                "flag": "1"

            }

        ]

    },

    "Response": {

        "code": "0",

        "link": "https://support.supremainc.com/en/support/home",

        "message": "Success"

    }

}

 

 

- Scanning Visual Face

[Example Value/Parameters Model]

{

       "User": {

           "credentials": {

               "visualFaces": [

                {

                       "template_ex_normalized_image": "/9j/4AAQSkZJRgABAQEASABIAAD/…",

                    "templates": [

                        {

                               "template_ex": "AAAAAAEA+QCAAeMAJwFhAQD/XFVUQ0…",

                               "credential_bin_type": "5"

                        },

                        {

                               "template_ex_ir": "AAAAAAEANAF+AdsAGQEAAAAASlBCRTyDfAA…",

                               "credential_bin_type": "6"

                        }

                    ],

                    "flag": "1",

                    "useProfile": "false"

                }

               ]

           }

    }

}

 

[Response Model]

{

  "DeviceResponse": {

    "rows": [

      {

        "id": "541530887",

        "code": "65230"

      }

    ],

    "result": "false"

  },

  "Response": {

    "code": "0",

    "link": "https://support.supremainc.com/en/support/home",

    "message": "Success"

  }

}

[Response: Fail]

{

    "Response": {

        "code": "20",

        "message": "Permission not allowed"

    }

}

[Response: Successful]

{

    "Response": {

        "code": "0",

        "link": "https://support.supremainc.com/en/support/home",

        "message": "Success"

    }

}

 

Part 3. Console Example

 

There are 2 steps to take to register Visual Face to a user. But, in the console, it is there is an additional step to choose the user which will receive the Visual Face registration.

  1. ScanAndRegisterVisualFace: Choose a user for Visual Face registration
  2. ScanVisualFace: Scan Visual Face via selected device (Must use FaceStation F2).
  3. RegisterVisualFaceToUser: Register the scanned Visual Face to the user chosen.

[ScanAndRegisterVisualFace

static async void ScanAndRegisterVisualFace()

        {

            Console.WriteLine("*****ScanAndRegisterVisualFace Task Started******");

            if (sessionID == null)

            {

                Console.WriteLine("You must log in first!");

                return;

            }

 

            CookieContainer cookieContainer = new CookieContainer();

 

            HttpClientHandler handler = new HttpClientHandler();

            handler.CookieContainer = cookieContainer;

 

               HttpClient client = new HttpClient(handler);

 

            client.DefaultRequestHeaders.Add("bs-session-id", sessionID);

            cookieContainer.Add(new Uri("https://127.0.0.1"), new Cookie("bs-session-id", sessionID));

            ListUsers();

            Console.WriteLine("Select User ID for Visual Face Registration...");

            string userID = Console.ReadLine();

            //HttpResponseMessage httpResponse = await client.GetAsync("https://127.0.0.1/api/users");

            HttpResponseMessage httpResponse = client.GetAsync("https://127.0.0.1/api/users").Result;

 

 

            if (httpResponse.IsSuccessStatusCode == true)

            {

                string httpResponseBody = await httpResponse.Content.ReadAsStringAsync();

                //Console.WriteLine(httpResponseBody);

                Console.WriteLine("Registering VISUAL FACE to the USER(" + userID + ")");

                ScanVisualFace(userID);

 

            }

            else

            {

                Console.WriteLine("Retrieving User List Failed");

                   Console.WriteLine(httpResponse.ToString());

            }

        }

 

[ScanVisualFace]

  • This step scans the Visual Face via selected device (FaceStation F2).  

static async void ScanVisualFace(string UserID)

        {

            Console.WriteLine("*****ScanVisualFace Task Started*****");

            CookieContainer cookieContainer = new CookieContainer();

 

            HttpClientHandler handler = new HttpClientHandler();

            handler.CookieContainer = cookieContainer;

 

            HttpClient httpClient = new HttpClient(handler);

 

            HttpClient client = new HttpClient(handler);

               httpClient.DefaultRequestHeaders.Add("bs-session-id", sessionID);

            cookieContainer.Add(new Uri("https://127.0.0.1"), new Cookie("bs-session-id", sessionID));

            ListDevices();

            Console.WriteLine("Select Device ID for Visual Face Scanning...(SELECT FaceStation F2...");

            string deviceID = Console.ReadLine();

            string resourceAddress = "https://127.0.0.1/api/devices/" + deviceID + "/credentials/face?pose_sensitivity=0&nonBlock=true";

 

            JavaScriptSerializer serializer = new JavaScriptSerializer();

 

            string payload = "";

               Console.WriteLine(resourceAddress);

            StringContent sc = new StringContent(payload, Encoding.UTF8, "application/json");

            //HttpResponseMessage httpResponse = await httpClient.PutAsync(resourceAddress, sc);

               HttpResponseMessage httpResponse = httpClient.GetAsync(resourceAddress).Result;

 

 

            Console.WriteLine("SCAN YOUR VISUAL FACE with the DEVICE(ID: " + deviceID + ")");

 

            if (httpResponse.IsSuccessStatusCode == true)

            {

                Console.WriteLine("Scan VISUAL FACE Successful.");

                string httpResponseBody = await httpResponse.Content.ReadAsStringAsync();

                Console.WriteLine(httpResponseBody);

                dynamic obj = JsonConvert.DeserializeObject(httpResponseBody);

                string template_ex_normalized_image = obj.credentials.faces[0].template_ex_normalized_image;

                string template_ex = obj.credentials.faces[0].templates[0].template_ex;

                string template_ex_ir = obj.credentials.faces[0].templates[1].template_ex_ir;

                string flag = obj.credentials.faces[0].flag;

                   RegisterVisualFaceToUser(UserID, template_ex_normalized_image, template_ex, template_ex_ir, flag);

            }

            else

            {

                Console.WriteLine("Scan VISUAL FACE Failed.");

                   Console.WriteLine(httpResponse.ToString());

            }

        }

 

[RegisterVisualFaceToUser]

  • This method receives the template values from ‘ScanVisualFace’ method and places it to ‘template_ex_normalized_image’, ‘template_ex’, ‘template_ex_ir’, and ‘flag’ values.

static async void RegisterVisualFaceToUser(string UserID, string template_ex_normalized_image, string template_ex, string template_ex_ir, string flag)

        {

            Console.WriteLine("*****RegisterVisualFaceToUser Task Started******");

            if (sessionID == null)

            {

                Console.WriteLine("You must log in first!");

                return;

            }

            CookieContainer cookieContainer = new CookieContainer();

 

            HttpClientHandler handler = new HttpClientHandler();

               handler.CookieContainer = cookieContainer;

 

            HttpClient httpClient = new HttpClient(handler);

 

            HttpClient client = new HttpClient(handler);

               httpClient.DefaultRequestHeaders.Add("bs-session-id", sessionID);

            cookieContainer.Add(new Uri("https://127.0.0.1"), new Cookie("bs-session-id", sessionID));

            Console.WriteLine("Registering VISUAL FACE to USER(" + UserID + ") ...");

 

            string resourceAddress = "https://127.0.0.1/api/users/" + UserID + "";

            string payload = "{\"User\": {\"credentials\": {\"visualFaces\": [{\"template_ex_normalized_image\": \"" + template_ex_normalized_image + "\",\"templates\": [{\"template_ex\": \"" + template_ex + "\",\"credential_bin_type\": \"5\"},{\"template_ex_ir\": \"" + template_ex_ir + "\",\"credential_bin_type\": \"6\"}],\"flag\": \"" + flag + "\",\"useProfile\": \"false\"}]}}}";

            StringContent sc = new StringContent(payload, Encoding.UTF8, "application/json");

            //HttpResponseMessage httpResponse = await httpClient.PutAsync(resourceAddress, sc);

            HttpResponseMessage httpResponse = httpClient.PutAsync(resourceAddress, sc).Result;

 

 

            if (httpResponse.IsSuccessStatusCode == true)

               {

                   Console.WriteLine(httpResponse.ToString());

                string httpResponseBody = await httpResponse.Content.ReadAsStringAsync();

                Console.WriteLine("***** VISUAL FACE is now registered to " + " User " + UserID + " *****");

            }

            else

            {

                Console.WriteLine("Failed to Register VISUAL FACE to User(" + UserID + ")");

                   Console.WriteLine(httpResponse.ToString());

            }

 

        }

 

[Select User & Device] 

Input: User ID, Device ID

텍스트이(가) 표시된 사진

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[Scan your Visual Face] 

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[Registration Processed successfully]

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Part 4. Register Visual Face via Postman

 

[Scan Visual Face by FaceStation F2 : Request] 

*You must enter the connected FaceStation F2’s ID.

텍스트, 스크린샷, 모니터, 화면이(가) 표시된 사진

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[Scan Visual Face by FaceStation F2 : Response Body: Success] 

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[Register Visual Face : Request] 

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[Register Visual Face : Successful]

 

텍스트, 실내이(가) 표시된 사진

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