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Program.cs
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Program.cs
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using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Net.Http;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Json;
using System.Security.Cryptography;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading;
using System.Threading.Tasks;
namespace DokobitGatewayNetExample
{
class Program
{
public class Api
{
//Enter Your Dokobit Documents Gateway access token
public static string accessToken = "";
// Api url
public static string apiUrl = "https://gateway-sandbox.dokobit.com";
// Your Postback url
public static string postbackUrl = "https://your-public-host/gateway-dotnet-example/postback";
}
[DataContract]
public class Response
{
[DataMember(Name = "status")]
public string Status { get; set; }
[DataMember(IsRequired = false, Name = "message")]
public string Message { get; set; }
[DataMember(IsRequired = false, Name = "errors")]
public IEnumerable<string> Errors { get; set; }
[DataMember(IsRequired = false, Name = "code")]
public string Code { get; set; }
}
[DataContract, KnownType(typeof(Response))]
public class UploadResponse : Response
{
[DataMember(IsRequired = false, Name = "token")]
public string Token { get; set; }
}
[DataContract, KnownType(typeof(UploadResponse))]
public class CreateSigningResponse : UploadResponse
{
[DataMember(IsRequired = false, Name = "signers")]
public Dictionary<string, string> Signers { get; set; }
}
/// <summary>
/// Console write line helper
/// </summary>
public static void WriteLine(string tag, string text)
{
Console.WriteLine(String.Format("[{0}] {1}", tag, text));
}
/// <summary>
/// Print response object
/// </summary>
/// <param name="response">Response object</param>
public static void printResponse(Response response, string tag)
{
if (response != null)
{
if (response.Status != null && response.Status != "ok")
{
WriteLine(tag, "Status: " + response.Status);
}
if (response.Message != null)
{
WriteLine(tag, "Message: " + response.Message);
}
if (response.Errors != null && response.Errors.Count() > 0)
{
WriteLine(tag, "Errors:");
foreach (var error in response.Errors)
{
WriteLine(tag, "\t" + error);
}
}
}
else
{
WriteLine(tag, "Failed to receive response\n");
}
}
/// <summary>
/// Upload fileUrl with fileName and SHA256 fileDigest. Check documentation for uploading Base64 encoded file instead of fileUrl.
/// </summary>
/// <param name="fileName">File name</param>
/// <param name="fileUrl">File remote url</param>
/// <param name="fileDigest">File SHA256 digest</param>
/// <returns>Upload response object</returns>
public static UploadResponse UploadFile(string fileName, string fileUrl, string fileDigest)
{
using (var client = new HttpClient())
{
using (var content =
new MultipartFormDataContent("Upload----" + DateTime.Now))
{
content.Add(new StringContent(fileName), "file[name]");
content.Add(new StringContent(fileUrl), "file[url]");
content.Add(new StringContent(fileDigest), "file[digest]");
using (
var message =
client.PostAsync(Api.apiUrl + "/api/upload.json?access_token=" + Api.accessToken,
content))
{
var input = message.Result;
var serializator = new DataContractJsonSerializer(typeof(UploadResponse));
return (UploadResponse)serializator.ReadObject(input.Content.ReadAsStreamAsync().Result);
}
}
}
}
/// <summary>
/// Request to upload file. Wraps UploadFile method with some output
/// </summary>
/// <param name="fileName">File name</param>
/// <param name="fileUrl">File remote url</param>
/// <param name="fileDigest">File SHA256 digest</param>
/// <returns>Received token or empty string</returns>
public static string RequestUploadFile(string fileName, string fileUrl, string fileDigest)
{
const string tag = "/api/file/upload.json";
WriteLine(tag, String.Format("Uploading file: {0}\n\tUrl: {1}", fileName, fileUrl));
// Upload request
UploadResponse response = UploadFile(fileName, fileUrl, fileDigest);
printResponse(response, tag);
if (response != null && response.Status != "ok")
{
WriteLine(tag, "File could not be uploaded. Please ensure that file URL is accessible from the internet.\n");
}
else if (response != null)
{
WriteLine(tag, "Received token:");
Console.WriteLine(response.Token + "\n");
return response.Token;
}
return String.Empty;
}
/// <summary>
/// Check uploaded file status by providing token
/// </summary>
/// <param name="token">File token</param>
/// <returns>Response object</returns>
public static Response CheckFileStatus(string token)
{
using (var client = new HttpClient())
{
using (var message = client.GetAsync(Api.apiUrl + "/api/upload/status/" + token + ".json?access_token=" + Api.accessToken))
{
var input = message.Result;
var serializator = new DataContractJsonSerializer(typeof(Response));
return (Response)serializator.ReadObject(input.Content.ReadAsStreamAsync().Result);
}
}
}
/// <summary>
/// Request to check file status
/// </summary>
/// <param name="token">File token</param>
/// <returns>True if file was successfully uploaded</returns>
public static bool RequestCheckFileStatus(string token)
{
string tag = "/api/upload/{token}.json";
WriteLine(tag, "Checking file status with token: ");
Console.WriteLine(token);
Response response = null;
for (int i = 0; i < 30; i++)
{
WriteLine(tag, "Pending");
// Check uploaded file
response = CheckFileStatus(token);
if (response.Status != "pending") break;
Thread.Sleep(1000);
}
printResponse(response, tag);
if (response.Status != "uploaded")
{
WriteLine(tag, "Documents Gateway could not download your file. Please ensure that file URL is accessible from the internet.\n");
}
else if (response != null)
{
WriteLine(tag, "File has been successfully uploaded.\n");
return true;
}
return false;
}
public static CreateSigningResponse CreateSigning(string token, string signerUID, string postbackUrl)
{
using (var client = new HttpClient())
{
using (var content =
new MultipartFormDataContent("Create----" + DateTime.Now))
{
// Signed document format. Check documentation for all available options.
content.Add(new StringContent("pdf"), "type");
// Signing name. Will be displayed as the main title.
content.Add(new StringContent("Agreement"), "name");
// Unique user identifier in your system.
content.Add(new StringContent(signerUID), "signers[0][id]");
// Name
content.Add(new StringContent("Tester"), "signers[0][name]");
// Surname
content.Add(new StringContent("Surname"), "signers[0][surname]");
// Phone number. Optional. If provided, will be prefilled in iframe for Mobile ID.
content.Add(new StringContent("+37060000666"), "signers[0][phone]");
// Personal code. Optional. If provided, will be prefilled for Smart-ID in iframe. Also, will not require entering manually for Mobile ID.
content.Add(new StringContent("50001018865"), "signers[0][code]");
// Country code. Required for signing with Smart-ID. Can also be used to preselect a country from a list in iframe dropdown for Smart-ID and Mobile ID.
content.Add(new StringContent("LT"), "signers[0][country_code]");
// Signing purpose. Availabe options listed in documentation.
content.Add(new StringContent("signature"), "signers[0][signing_purpose]");
content.Add(new StringContent(token), "files[0][token]"); // For 'pdf' type only one file is supported.
content.Add(new StringContent(postbackUrl), "postback_url");
using (
var message =
client.PostAsync(Api.apiUrl + "/api/signing/create.json?access_token=" + Api.accessToken,
content))
{
var input = message.Result;
var settings = new DataContractJsonSerializerSettings();
settings.UseSimpleDictionaryFormat = true;
var serializator = new DataContractJsonSerializer(typeof(CreateSigningResponse), settings);
return (CreateSigningResponse)serializator.ReadObject(input.Content.ReadAsStreamAsync().Result);
}
}
}
}
/// <summary>
///
/// </summary>
/// <param name="token"></param>
/// <returns></returns>
public static bool RequestCreateSigning(string token, string signerUID)
{
string tag = " /api/signing/create.json";
WriteLine(tag, "Creating new signing with token:");
Console.WriteLine(token);
CreateSigningResponse response = CreateSigning(token, signerUID, Api.postbackUrl); ;
printResponse(response, tag);
if (response != null && response.Status != "ok")
{
WriteLine(tag, "Signing could not be created.\n");
}
else if (response != null)
{
if (response.Signers.ContainsKey(signerUID))
{
string signingUrl = Api.apiUrl.TrimEnd('/') + "/signing/" + response.Token + "?access_token=" + response.Signers[signerUID];
WriteLine(tag, "Signing successfully created:");
WriteLine(tag, signingUrl + "\n");
/*
* Signing url formation: <API_URL>/signing/<SIGNING_TOKEN>?access_token=<SIGNER_ACCESS_TOKEN>
* SIGNING_TOKEN: token received with 'signing/create' API call response.
* SIGNER_ACCESS_TOKEN: token received with 'signing/create' API call response as parameter 'signers'.
* Signers represented as associative array where key is signer's unique identifier - personal code.
*/
}
else {
WriteLine(tag, "Signer not found: " + signerUID + "\n");
}
return true;
}
return false;
}
/// <summary>
/// Main
/// </summary>
/// <param name="args">Console arguments</param>
static void Main(string[] args)
{
System.Net.ServicePointManager.SecurityProtocol = System.Net.SecurityProtocolType.Tls12;
/**
* File name of document you want to sign.
*/
string fileName = "test.pdf";
/**
* HTTP URL where the file is stored.
* Documents Gateway will download the file from given resource URL.
* Ensure that file URL is accessible from internet.
*/
string fileUrl = "https://gateway-sandbox.dokobit.com/sc/test.pdf";
/**
* SHA256 digest of file content.
*/
string fileDigest = "6256a099cd2a3d3606acc86e7eacbdcf4cd067db3a1d46930d77886d96fd226e";
/*
* Unique user identifier in your system.
*/
string signerUID = "o880jxigih";
/*
* Example application logic
*/
if (Api.accessToken == String.Empty) { Console.WriteLine("Enter API access token to Program.cs:21"); return; }
string command = args.Length > 0 ? args[0] : "demo";
string token = args.Length > 1 ? args[1] : "some_token";
Console.WriteLine("Dokobit Documents Gateway .NET signing example.\n");
switch (command)
{
case "upload_file":
RequestUploadFile(fileName, fileUrl, fileDigest);
break;
case "check_file_status":
RequestCheckFileStatus(token);
break;
case "create_signing":
RequestCreateSigning(token, signerUID);
break;
case "demo":
token = RequestUploadFile(fileName, fileUrl, fileDigest);
if (RequestCheckFileStatus(token))
{
RequestCreateSigning(token, signerUID);
}
break;
default:
Console.WriteLine("Bad command argument");
break;
}
Console.WriteLine("Press any key to continue...");
Console.ReadKey();
}
}
}