Get photo from Delve profile of Office365 using REST request - rest

Question

I have a problem with getting profile image from Delve account. Here is the example of link which returns me photo when i put it into browser: https://orgname.sharepoint.com/_vti_bin/DelveApi.ashx/people/profileimage?userId=alias#org.com&size=L
Now I need to get this photo from code. I tried such way, that works perfect for external images not in Office365:
var credentials = new NetworkCredential("myemail", "password");
using (var handler = new HttpClientHandler { Credentials = credentials })
using (var client = new HttpClient(handler))
{
var bytes = await client.GetByteArrayAsync(url);
return Convert.ToBase64String(bytes);
}
But as responce I get html page with text like:
<H1>We can't sign you in</H1><p>Your browser is currently set to block cookies. You need to allow cookies to use this service.</p><p>Cookies are small text files stored on your computer that tell us when you're signed in. To learn how to allow cookies, check the online help in your web browser.</p>
I think it is related with Office365 Authorization, but I don`t know how to perform REST request to this url with my credentials...

Answer 1

Problem Solved, first we need to initialize SharePoint Context:
public ClientContext SetupSpContext()
{
// This builds the connection to the SP Online Server
var clientContext = new ClientContext(_sharePointCrmDocumentsSiteName);
var secureString = new SecureString();
foreach (var c in _sharePointCrmDocumentsPwd.ToCharArray()) secureString.AppendChar(c);
{
clientContext.Credentials = new SharePointOnlineCredentials(_sharePointCrmDocumentsLoginName, secureString);
}
var web = clientContext.Web;
clientContext.Load(web);
clientContext.ExecuteQuery();
return clientContext;
}
Then we can Get profile picture from Shrepoint using User email:
public string DownloadProfilePictureAsBase64(string email)
{
try
{
var pictureUrl = GetPictureUrl(email);
var fileInfo = File.OpenBinaryDirect(_sharePointContext, pictureUrl);
using (var memory = new MemoryStream())
{
var buffer = new byte[1000000];
int nread;
while ((nread = fileInfo.Stream.Read(buffer, 0, buffer.Length)) > 0)
{
memory.Write(buffer, 0, nread);
}
memory.Seek(0, SeekOrigin.Begin);
var buffer2 = new byte[memory.Length];
memory.Read(buffer2, 0, buffer2.Length);
return Convert.ToBase64String(buffer2);
}
}
catch (Exception ex)
{
Console.WriteLine($"Picture for user {email} can not be downloaded");
Console.WriteLine(ex.Message);
}
return null;
}
private string GetPictureUrl(string email)
{
string targetUser = $"i:0#.f|membership|{email}";
var peopleManager = new PeopleManager(_sharePointContext);
var personProperties = peopleManager.GetPropertiesFor(targetUser);
_sharePointContext.Load(personProperties, p => p.PictureUrl);
_sharePointContext.ExecuteQuery();
var pictureUri = new Uri(personProperties.PictureUrl);
var localPath = pictureUri.LocalPath.Replace("MThumb", "LThumb"); //Change size of the picture
return localPath;
}

Answer 2

You should Microsoft Graph to get a user's picture. https://graph.microsoft.com/v1.0/me/photo gets your metadata about the profile picture, and https://graph.microsoft.com/v1.0/me/photo/$value gets you the image. You need to use OAuth. See https://graph.microsoft.io/en-us/docs/api-reference/v1.0/api/profilephoto_get for more details.