implemented SetDisplayName

README.md

@@ -90,6 +90,7 @@ Then run School of Dragons.
 - SetAchievementByEntityIDs
 - SetAvatar
 - SetCommonInventory
+- SetDisplayName (V2)
 - SetDragonXP (used by account import tools)
 - SetImage
 - SetKeyValuePair

mitm-redirect.py

@@ -86,6 +86,7 @@ methods = [
   'GetGameDataByGame',
   'GetGameDataByGameForDateRange',
   'GetTopAchievementPointUsers',
+  'SetDisplayName',
 ]
 
 def routable(path):

src/Controllers/Common/ContentController.cs

@@ -102,6 +102,33 @@ public class ContentController : Controller {
         }
     }
 
+    [HttpPost]
+    [Produces("application/xml")]
+    [Route("/V2/ContentWebService.asmx/SetDisplayName")]
+    [VikingSession]
+    public IActionResult SetDisplayName(Viking viking, [FromForm] string request) {
+        string newName = XmlUtil.DeserializeXml<SetDisplayNameRequest>(request).DisplayName;
+
+        if (String.IsNullOrWhiteSpace(newName) || ctx.Vikings.Count(e => e.Name == newName) > 0) {
+            return Ok(new SetAvatarResult {
+                Success = false,
+                StatusCode = AvatarValidationResult.AvatarDisplayNameInvalid
+            });
+        }
+
+        viking.Name = newName;
+        AvatarData avatarData = XmlUtil.DeserializeXml<AvatarData>(viking.AvatarSerialized);
+        avatarData.DisplayName = newName;
+        viking.AvatarSerialized = XmlUtil.SerializeXml(avatarData);
+        ctx.SaveChanges();
+
+        return Ok(new SetAvatarResult {
+            Success = true,
+            DisplayName = viking.Name,
+            StatusCode = AvatarValidationResult.Valid
+        });
+    }
+
     [HttpPost]
     [Produces("application/xml")]
     [Route("ContentWebService.asmx/GetKeyValuePair")]

src/Schema/SetDisplayNameRequest.cs

@@ -0,0 +1,16 @@
+using System.Xml.Serialization;
+
+namespace sodoff.Schema;
+
+[XmlRoot(ElementName = "sdnr", Namespace = "")]
+[Serializable]
+public class SetDisplayNameRequest {
+    [XmlElement(ElementName = "dn")]
+    public string DisplayName { get; set; }
+
+    [XmlElement(ElementName = "iid")]
+    public int ItemID { get; set; }
+
+    [XmlElement(ElementName = "sid")]
+    public int StoreID { get; set; }
+}