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.