Cloud storage Archives - Michał Białecki Blog

Egnyte is a company, that offers secure and fast file storage in the cloud for business customers. I have written more about getting started with Egnyte API in my previous post.

Egnyte.API is a nuget package, that I’ve written in .Net and it supports:

.Net Framework 4.5
Windows Phone 8.1
Xamarin

It contains support for most of the functionalities that Egnyte API offers and helps to manage:

Files system
Permissions
Users
Groups
Search
Links
Audit reporting

However, if you’d like to improve it, feel free to contribute to it’s github repository.

Obtaining OAuth 2.0 token

First this is obtaining a token, that later can be used for authenticating each request. Egnyte offers three OAuth 2.0 authorization flows: Resource Owner, Authorization Code and Implicit Grant, however Authorization Code flow is the most common. To ease implementation of obtaining the token, Egnyte.API offers helpers methods for all three of those.

[HttpPost]
public void RequestTokenCode()
{
    var authorizeUrl = OAuthHelper.GetAuthorizeUri(
        OAuthAuthorizationFlow.Code,
        Domain,
        PrivateKey,
        RedirecrUri);

    Response.Redirect(authorizeUrl.ToString());
}

[HttpPost]
public void RequestTokenImplicitGrant()
{
    var authorizeUrl = OAuthHelper.GetAuthorizeUri(
        OAuthAuthorizationFlow.ImplicitGrant,
        Domain,
        PrivateKey,
        RedirecrUri);

    Response.Redirect(authorizeUrl.ToString());
}

[HttpGet]
public async Task<ActionResult> AuthorizeCode(string code)
{
    var token = await EgnyteClientHelper.GetTokenFromCode(
        Domain,
        PrivateKey,
        Secret,
        RedirecrUri,
        code);

    return Json(JsonConvert.SerializeObject(token), JsonRequestBehavior.AllowGet);
}

After you have a token, it’s time to use it.

Usage and structure of Egnyte.API package

The simplest usage is just one line – creating a client.

var client = new EgnyteClient(Token, Domain);

However, you can use optional parameters and pass your own HttpClient if you need to set some specific configuration. After creating a client you are ready to go. Inside a client you will find child clients that will help you use options mentioned above.

egnyte-api-clients

Each method is properly named and contains description of it’s usage and purpose of it’s parameters.

egnyte-api-list-files

Sample usages

This is how folder looks like on the Egnyte web view:

List files

Listing is super easy, code like this:

var client = new EgnyteClient(Token, Domain);
var listing = await client.Files.ListFileOrFolder("Shared/MikTests/Blog");

Returns object, that can be serialized as Json to:

{"IsFolder":true,"AsFolder":{"Count":0,"Offset":0,"TotalCount":9,"RestrictMoveDelete":false,"PublicLinks":"files_folders","Folders":[],"Files":[{"Checksum":"896e4ea21d4a0c692cc5729186ca547a9c80dd0261d22fee2ad6a65642f144712f2d61efc5b5d478b1094153d687afb26db19a10b4eabcf894c534356500cb3c","Size":11706,"Path":"/Shared/MikTests/Blog/ai-first-results.PNG","Name":"ai-first-results.PNG","Locked":false,"EntryId":"a971e61c-dc02-44f9-aba3-ad0d23ee25bd","GroupId":"692602c0-3270-41ab-9b95-f1942724c3b5","LastModified":"2017-09-03T21:11:46Z","UploadedBy":"mik","NumberOfVersions":1},{"Checksum":"cb3d2a1709556cfe460261eb41fe74dcd07468c9af55f352feb024d76001109f191b9b829540305b6888f1ea43d9d23b188b96ccd7f59c29a739f72a79829794","Size":43699,"Path":"/Shared/MikTests/Blog/ai-how-to-send-data.PNG","Name":"ai-how-to-send-data.PNG","Locked":false,"EntryId":"3fbd6acf-c36b-4440-ad37-4ddc5f19bc14","GroupId":"586308a7-49e8-4b54-b5e2-ae4b113330f8","LastModified":"2017-09-03T20:05:08Z","UploadedBy":"mik","NumberOfVersions":1},{"Checksum":"184c4f201d9e3083b5f28913b1c19a8cc14fee378fac9d2bfcfb3940c19b2a8a901da045ac1b5a1af61ffd681698d797265f25e1087b3313dc9e5cc1e8085912","Size":66954,"Path":"/Shared/MikTests/Blog/ai-second-results.PNG","Name":"ai-second-results.PNG","Locked":false,"EntryId":"1e66e057-0e52-4b5d-a289-b56922a185a4","GroupId":"d464292a-7ccd-43e2-add9-983cf342a9f5","LastModified":"2017-09-03T21:18:46Z","UploadedBy":"mik","NumberOfVersions":1},{"Checksum":"10004c02792a22f97d89e22a47f97bb9ebb65def491b7b66a8cda1da7560c010d971a02ec43b6148526275d72c6c4a0ffc19aa79a7f67458ef912d0d949b4d22","Size":8642,"Path":"/Shared/MikTests/Blog/application-insights-add-data-source.PNG","Name":"application-insights-add-data-source.PNG","Locked":false,"EntryId":"0ef8ee1e-3a69-41a6-b2e1-ae25d14be8fa","GroupId":"5bdea173-e195-4f0a-a5cb-7b6a51a32b87","LastModified":"2017-08-15T13:01:42Z","UploadedBy":"mik","NumberOfVersions":1},{"Checksum":"4acd351077e97157e8badbff49d892bbe51f80d7043272231676b753d2b1576d0d7acebb49506bf9c40fda0894e80e87c2255e4fb28381c88bd5ea309cb62fde","Size":36501,"Path":"/Shared/MikTests/Blog/application-insights-defining-data-source.PNG","Name":"application-insights-defining-data-source.PNG","Locked":false,"EntryId":"20ba9b7d-eba0-4499-9fbc-84b00ce95ac0","GroupId":"1df2518e-b123-47fb-a725-9837222b4017","LastModified":"2017-08-16T13:43:39Z","UploadedBy":"mik","NumberOfVersions":1},{"Checksum":"781419db9514cee18ddb92d106e35ae8dc5998b5b10987ceaec069c8791babffbc4e526d98e2a662a5176f1e9e67a627b60873d307c47009b965f48fe76570b5","Size":15410,"Path":"/Shared/MikTests/Blog/application-insights-performance-monitor.PNG","Name":"application-insights-performance-monitor.PNG","Locked":false,"EntryId":"d985893b-e414-4258-b009-6cf299800993","GroupId":"503e569b-481f-4a0a-b389-06c075713f17","LastModified":"2017-08-15T12:02:56Z","UploadedBy":"mik","NumberOfVersions":1},{"Checksum":"74a0f551d27ebe61b5c3b92ee0de4b1c48c60f7bbbfb0e1b9ef917c1f8ee9f7d30f0e8cd35b7579d6b40c020900db2eb8e75bc9c97855d2d49bc3e38c30146fe","Size":16935,"Path":"/Shared/MikTests/Blog/application-insights-send-file-schema.PNG","Name":"application-insights-send-file-schema.PNG","Locked":false,"EntryId":"09186e55-f629-40c7-a377-8a1a504a13e3","GroupId":"f99aef8f-e2d7-4365-9369-dbb6339038cd","LastModified":"2017-08-16T14:00:36Z","UploadedBy":"mik","NumberOfVersions":1},{"Checksum":"88c0c9416c2f75fc0b98d33dc240a7e771c4dd6dd7aa70342901134ef3eb90838e3de3facd73e12b8510c916e1a2c60c082cc664e77cea3572994ef774ef3e5c","Size":14911,"Path":"/Shared/MikTests/Blog/application_pool_settings.PNG","Name":"application_pool_settings.PNG","Locked":false,"EntryId":"cadab05d-8029-42cf-857c-dcedad8bb979","GroupId":"d692e745-0682-4c47-9fda-8a8675572bff","LastModified":"2017-04-10T09:37:52Z","UploadedBy":"mik","NumberOfVersions":1},{"Checksum":"b9b02a5b7b5149c50477d3fd9c14d4aebb96ceb268bfa105fa4b7507cc6306f9c5d20e67817444be39a94ef38c06d83423570a641c28506f00aa23770ade4fdf","Size":46298,"Path":"/Shared/MikTests/Blog/azure-connection-string.png","Name":"azure-connection-string.png","Locked":false,"EntryId":"5b84c1b3-03b2-4076-8eae-b23e0ff0b68f","GroupId":"d85bbf46-cb92-461a-bb69-d5fa712ddd64","LastModified":"2017-04-11T11:48:58Z","UploadedBy":"mik","NumberOfVersions":1}],"Name":"Blog","Path":"/Shared/MikTests/Blog","FolderId":"9c23d12c-5b91-40e3-bc81-4fb71fcf491a","AllowedFileLinkTypes":[],"AllowedFolderLinkTypes":[]},"AsFile":null}

Creating new folder

var listing = await client.Files.CreateFolder("Shared/MikTests/Blog/NewFolder");

Sending a file

var filePath = Server.MapPath("~/Content/myPhoto.jpg");
var stream = new MemoryStream(System.IO.File.ReadAllBytes(filePath));
var listing = await client.Files.CreateOrUpdateFile("Shared/MikTests/Blog/myPhoto.jpg", stream);

Deleting file or folder

var path = "Shared/MikTests/Blog/myPhoto.jpg";
var listing = await client.Files.DeleteFileOrFolder(path, entryId: "9355165a-e599-4148-88c5-0d3552493e2f");

Downloading file

var path = "Shared/MikTests/Blog/myPhoto.zip";
var responseStream = await client.Files.DownloadFileAsStream(path);

Creating a user

var listing = await client.Users.CreateUser(
    new Users.NewUser {
        UserName = "mikTest100",
        ExternalId = Guid.NewGuid().ToString(),
        Email = "mik.bialecki+test100@gmail.com",
        FamilyName = "Michał",
        GivenName = "Białecki",
        Active = true,
        AuthType = Users.UserAuthType.SAML_SSO,
        UserType = Users.UserType.StandardUser,
        IdpUserId = "mbialeckiTest100",
        UserPrincipalName = "mik.bialecki+testp100@gmail.com"
    });

Updating a user

var listing = await client.Users.UpdateUser(
    new Users.UserUpdate
    {
        Id = 12824215695,
        Email = "mik.bialecki+test100@gmail.com",
        FamilyName = "Michał",
        GivenName = "Białecki II"
    });

Conclusion

As you see using Egnyte.API nuget package is very simple. I presented only some of it’s capabilities, but if you want more, feel free to contribute to a public repository: https://github.com/egnyte/egnyte-dotnet. And if you have any questions, just let me know 🙂

Egnyte is a company that provides software for enterprise file synchronization and sharing. Egnyte offers a cloud storage for business users to securely access and share data across the company. API offers RESTful interface, all request and responses are formated as JSON, strings are encoded as UTF-8 and all calls must be done over HTTPS.

First thing you need to have is your domain and API Key for authorization, you can find whole registration process described here.

Egnyte Api uses OAuth 2.0 for authentication and it supports Resource Owner flow (for internal application, that will be used only by your business internally) and Authorization Code and Implicit Grant for publicly available applications. Once you get the OAuth 2.0 token, you should cache it to use for multiple requests, instead of asking for a key every time you use API. Every subseqent API call would need to add a authorization header with generated token.

Authorization: Bearer 2v8q2bc6uvxtgghwmwvnvcp4

Getting token with Authorization Code flow

Whole process of obtaining token with Authorization Code flow is described here.

I have created a helper method to handle this process.

using Newtonsoft.Json;
public static async Task<TokenResponse> GetTokenFromCode(
    string userDomain,
    string clientId,
    string clientSecret,
    Uri redirectUri,
    string authorizationCode,
    HttpClient httpClient = null)
{
    var disposeClient = httpClient == null;
    try
    {
        httpClient = httpClient ?? new HttpClient();
        var requestParameters = OAuthHelper.GetTokenRequestParameters(
            userDomain,
            clientId,
            clientSecret,
            redirectUri,
            authorizationCode);
        var content = new FormUrlEncodedContent(requestParameters.QueryParameters);
        var result = await httpClient.PostAsync(requestParameters.BaseAddress, content).ConfigureAwait(false);

        var rawContent = await result.Content.ReadAsStringAsync().ConfigureAwait(false);

        return JsonConvert.DeserializeObject<TokenResponse>(rawContent);
    }
    finally
    {
        if (disposeClient)
        {
            httpClient.Dispose();
        }
    }
}

Here is a GetTokenRequestParameters method in OAuthHelper class. All it’s parameters are required.

public static class OAuthHelper
{
    private const string EgnyteBaseUrl = "https://{0}.egnyte.com/puboauth/token";

    public static TokenRequestParameters GetTokenRequestParameters(
        string userDomain,
        string clientId,
        string clientSecret,
        Uri redirectUri,
        string authorizationCode)
    {
        var queryParameters = new Dictionary<string, string>
            {
                { "client_id", clientId },
                { "client_secret", clientSecret },
                { "redirect_uri", redirectUri.ToString() },
                { "code", authorizationCode },
                { "grant_type", "authorization_code" }
            };

        return new TokenRequestParameters
            {
                BaseAddress = new Uri(string.Format(EgnyteBaseUrl, userDomain)),
                QueryParameters = queryParameters
            };
    }
}

All code posted here is a part of Egnyte.Api nuget package, that you can download and use yourself. If you’re interested in looking into code, it’s available in github public repository.