fix issue #76 check the dev EUI at device creation

src/AzureIoTHub.Portal/Client/Pages/Devices/CreateDevicePage.razor

@@ -199,14 +199,14 @@
         if (response.IsSuccessStatusCode)
         {
             Snackbar.Add($"Device {Device.DeviceID} has been successfully created!", Severity.Success);
+            // Go back to the list of devices
+            NavManager.NavigateTo("devices");
         }
         else
         {
-            Snackbar.Add($"Oh oh, something went wrong while creating device {Device.DeviceID}...", Severity.Error);
+            Snackbar.Add($"Oh oh, something went wrong while creating device {Device.DeviceID}... <br> {errorMsg}", Severity.Error);
         }
 
-        // Go back to the list of devices
-        NavManager.NavigateTo("devices");
 
     }
 

src/AzureIoTHub.Portal/Server/Controllers/DevicesController.cs

@@ -10,6 +10,7 @@ namespace AzureIoTHub.Portal.Server.Controllers
     using System.Threading.Tasks;
     using Azure.Data.Tables;
     using AzureIoTHub.Portal.Server.Factories;
+    using AzureIoTHub.Portal.Server.Helpers;
     using AzureIoTHub.Portal.Server.Managers;
     using AzureIoTHub.Portal.Server.Mappers;
     using AzureIoTHub.Portal.Server.Services;
@@ -85,6 +86,11 @@ public async Task<IActionResult> CreateDeviceAsync(DeviceDetails device)
         {
             try
             {
+                if (!Eui.TryParse(device.DeviceID, out ulong deviceIdConvert))
+                {
+                    throw new InvalidOperationException("the device id is in the wrong format.");
+                }
+
                 // Create a new Twin from the form's fields.
                 var newTwin = new Twin()
                 {
@@ -102,7 +108,12 @@ public async Task<IActionResult> CreateDeviceAsync(DeviceDetails device)
             catch (DeviceAlreadyExistsException e)
             {
                 this.logger.LogError($"{device.DeviceID} - Create device failed", e);
-                return this.BadRequest();
+                return this.BadRequest(e.Message);
+            }
+            catch (InvalidOperationException e)
+            {
+                this.logger?.LogError("{a0} - Create device failed \n {a1}", device.DeviceID, e.Message);
+                return this.BadRequest(e.Message);
             }
         }
 

src/AzureIoTHub.Portal/Server/Helpers/DeviceHelper.cs

@@ -162,5 +162,10 @@ public static List<GatewayModule> RetrieveModuleList(Twin twin, int moduleCount)
                 return list;
             }
         }
+
+        public static bool IsValidDevEUI(ulong value)
+        {
+            return value is not 0 and not 0xffff_ffff_ffff_ffff;
+        }
     }
 }

src/AzureIoTHub.Portal/Server/Helpers/Eui.g.cs

@@ -0,0 +1,166 @@
+#nullable enable
+
+namespace AzureIoTHub.Portal.Server.Helpers
+{
+    using System;
+    using System.Buffers.Binary;
+
+    readonly partial record struct DevEui : IFormattable
+    {
+        public const int Size = sizeof(ulong);
+
+        readonly ulong value;
+
+        public DevEui(ulong value) => this.value = value;
+
+        public ulong AsUInt64 => this.value;
+
+        public override string ToString() => ToString(null, null);
+
+        public static DevEui Read(ReadOnlySpan<byte> buffer) =>
+            new(BinaryPrimitives.ReadUInt64LittleEndian(buffer));
+
+        public static DevEui Read(ref ReadOnlySpan<byte> buffer)
+        {
+            var result = Read(buffer);
+            buffer = buffer[Size..];
+            return result;
+        }
+
+        public Span<byte> Write(Span<byte> buffer)
+        {
+            BinaryPrimitives.WriteUInt64LittleEndian(buffer, this.value);
+            return buffer[Size..];
+        }
+
+        public static DevEui Parse(ReadOnlySpan<char> input) =>
+            TryParse(input, out var result) ? result : throw new FormatException();
+
+        public static bool TryParse(ReadOnlySpan<char> input, out DevEui result)
+        {
+            if (Eui.TryParse(input, out var raw))
+            {
+                result = new DevEui(raw);
+                return true;
+            }
+            else
+            {
+                result = default;
+                return false;
+            }
+        }
+
+        public string ToString(string? format, IFormatProvider? formatProvider) => Eui.Format(this.value, format);
+
+        public string ToHex() => ToHex(null);
+        public string ToHex(LetterCase letterCase) => ToHex(null, letterCase);
+        public string ToHex(char? separator) => ToHex(separator, LetterCase.Upper);
+        public string ToHex(char? separator, LetterCase letterCase) => Eui.ToHex(this.value, separator, letterCase);
+    }
+
+    readonly partial record struct JoinEui : IFormattable
+    {
+        public const int Size = sizeof(ulong);
+
+        readonly ulong value;
+
+        public JoinEui(ulong value) => this.value = value;
+
+        public ulong AsUInt64 => this.value;
+
+        public override string ToString() => ToString(null, null);
+
+        public static JoinEui Read(ReadOnlySpan<byte> buffer) =>
+            new(BinaryPrimitives.ReadUInt64LittleEndian(buffer));
+
+        public static JoinEui Read(ref ReadOnlySpan<byte> buffer)
+        {
+            var result = Read(buffer);
+            buffer = buffer[Size..];
+            return result;
+        }
+
+        public Span<byte> Write(Span<byte> buffer)
+        {
+            BinaryPrimitives.WriteUInt64LittleEndian(buffer, this.value);
+            return buffer[Size..];
+        }
+
+        public static JoinEui Parse(ReadOnlySpan<char> input) =>
+            TryParse(input, out var result) ? result : throw new FormatException();
+
+        public static bool TryParse(ReadOnlySpan<char> input, out JoinEui result)
+        {
+            if (Eui.TryParse(input, out var raw))
+            {
+                result = new JoinEui(raw);
+                return true;
+            }
+            else
+            {
+                result = default;
+                return false;
+            }
+        }
+
+        public string ToString(string? format, IFormatProvider? formatProvider) => Eui.Format(this.value, format);
+
+        public string ToHex() => ToHex(null);
+        public string ToHex(LetterCase letterCase) => ToHex(null, letterCase);
+        public string ToHex(char? separator) => ToHex(separator, LetterCase.Upper);
+        public string ToHex(char? separator, LetterCase letterCase) => Eui.ToHex(this.value, separator, letterCase);
+    }
+
+    readonly partial record struct StationEui : IFormattable
+    {
+        public const int Size = sizeof(ulong);
+
+        readonly ulong value;
+
+        public StationEui(ulong value) => this.value = value;
+
+        public ulong AsUInt64 => this.value;
+
+        public override string ToString() => ToString(null, null);
+
+        public static StationEui Read(ReadOnlySpan<byte> buffer) =>
+            new(BinaryPrimitives.ReadUInt64LittleEndian(buffer));
+
+        public static StationEui Read(ref ReadOnlySpan<byte> buffer)
+        {
+            var result = Read(buffer);
+            buffer = buffer[Size..];
+            return result;
+        }
+
+        public Span<byte> Write(Span<byte> buffer)
+        {
+            BinaryPrimitives.WriteUInt64LittleEndian(buffer, this.value);
+            return buffer[Size..];
+        }
+
+        public static StationEui Parse(ReadOnlySpan<char> input) =>
+            TryParse(input, out var result) ? result : throw new FormatException();
+
+        public static bool TryParse(ReadOnlySpan<char> input, out StationEui result)
+        {
+            if (Eui.TryParse(input, out var raw))
+            {
+                result = new StationEui(raw);
+                return true;
+            }
+            else
+            {
+                result = default;
+                return false;
+            }
+        }
+
+        public string ToString(string? format, IFormatProvider? formatProvider) => Eui.Format(this.value, format);
+
+        public string ToHex() => ToHex(null);
+        public string ToHex(LetterCase letterCase) => ToHex(null, letterCase);
+        public string ToHex(char? separator) => ToHex(separator, LetterCase.Upper);
+        public string ToHex(char? separator, LetterCase letterCase) => Eui.ToHex(this.value, separator, letterCase);
+    }
+}

src/AzureIoTHub.Portal/Server/Helpers/EuiHelper.cs

@@ -0,0 +1,126 @@
+// Copyright (c) CGI France. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+#nullable enable
+
+namespace AzureIoTHub.Portal.Server.Helpers
+{
+    using System;
+    using System.Buffers.Binary;
+
+    [Flags]
+    public enum EuiParseOptions
+    {
+        None = 0,
+
+        /// <summary>
+        /// Forbids a syntactically correct DevEUI from being parsed for which validation like
+        /// <see cref="DevEui.IsValid"/> will return <c>false</c>.
+        /// </summary>
+        ForbidInvalid = 1,
+    }
+
+    /// <summary>
+    /// Global end-device ID in IEEE EUI-64 (64-bit Extended Unique Identifier) address space
+    /// that uniquely identifies the end-device.
+    /// </summary>
+    /// <remarks>
+    /// <para>
+    /// For OTAA devices, the DevEUI MUST be stored in the end-device before the Join procedure
+    /// is executed. ABP devices do not need the DevEUI to be stored in the device itself, but
+    /// it is recommended to do so.</para>
+    /// <para>
+    /// EUI are 8 bytes multi-octet fields and are transmitted as little endian.</para>
+    /// </remarks>
+    public partial record struct DevEui
+    {
+        public bool IsValid => Eui.IsValid(this.value);
+
+        public static bool TryParse(ReadOnlySpan<char> input, EuiParseOptions options, out DevEui result)
+        {
+            if (TryParse(input, out var candidate)
+                && ((options & EuiParseOptions.ForbidInvalid) == EuiParseOptions.None || candidate.IsValid))
+            {
+                result = candidate;
+                return true;
+            }
+
+            result = default;
+            return false;
+        }
+    }
+
+    /// <summary>
+    /// Global application ID in IEEE EUI-64 (64-bit Extended Unique Identifier) address space
+    /// that uniquely identifies the Join Server that is able to assist in the processing of
+    /// the Join procedure and the session keys derivation.
+    /// </summary>
+    /// <remarks>
+    /// <para>
+    /// For OTAA devices, the JoinEUI MUST be stored in the end-device before the Join procedure
+    /// is executed. The JoinEUI is not required for ABP only end-devices.</para>
+    /// <para>
+    /// EUI are 8 bytes multi-octet fields and are transmitted as little endian.</para>
+    /// </remarks>
+    public partial record struct JoinEui { }
+
+    /// <summary>
+    /// ID in IEEE EUI-64 (64-bit Extended Unique Identifier) address space that uniquely identifies
+    /// a station.
+    /// </summary>
+    /// <remarks>
+    /// EUI are 8 bytes multi-octet fields and are transmitted as little endian.
+    /// </remarks>
+    public partial record struct StationEui
+    {
+        public bool IsValid => Eui.IsValid(this.value);
+    }
+
+    internal static class Eui
+    {
+        public static string Format(ulong value, string? format)
+        {
+            return format switch
+            {
+#pragma warning disable format
+                null or "G" or "N" => ToHex(value, LetterCase.Upper),
+                "d" => ToHex(value, '-', LetterCase.Lower),
+                "D" => ToHex(value, '-', LetterCase.Upper),
+                "E" => ToHex(value, ':', LetterCase.Upper),
+                "e" => ToHex(value, ':', LetterCase.Lower),
+                "n" or "g" => ToHex(value, LetterCase.Lower),
+                "I" => Id6.Format(value, Id6.FormatOptions.FixedWidth),
+                "i" => Id6.Format(value, Id6.FormatOptions.FixedWidth | Id6.FormatOptions.Lowercase),
+#pragma warning restore format
+                _ => throw new FormatException(@"Format string can only be null, ""G"", ""g"", ""D"", ""d"", ""I"", ""i"", ""N"", ""n"", ""E"" or ""e"".")
+            };
+        }
+
+        public static string ToHex(ulong value) => ToHex(value, null);
+
+        public static string ToHex(ulong value, LetterCase letterCase) => ToHex(value, null, letterCase);
+
+        public static string ToHex(ulong value, char? separator) => ToHex(value, separator, LetterCase.Upper);
+
+        public static string ToHex(ulong value, char? separator, LetterCase letterCase)
+        {
+            Span<byte> bytes = stackalloc byte[sizeof(ulong)];
+            BinaryPrimitives.WriteUInt64BigEndian(bytes, value);
+            var length = separator is null ? bytes.Length * 2 : (bytes.Length * 3) - 1;
+            var chars = length <= 128 ? stackalloc char[length] : new char[length];
+            Hexadecimal.Write(bytes, chars, separator, letterCase);
+            return new string(chars);
+        }
+
+        public static bool TryParse(ReadOnlySpan<char> input, out ulong result) =>
+            input.Length switch
+            {
+                23 => Hexadecimal.TryParse(input, out result, '-') // e.g. "88:99:AA:BB:CC:DD:EE:FF"
+                   || Hexadecimal.TryParse(input, out result, ':'), // e.g. "88-99-AA-BB-CC-DD-EE-FF"
+                16 => Hexadecimal.TryParse(input, out result),      // e.g. "8899AABBCCDDEEFF"
+                _ => Id6.TryParse(input, out result) // e.g. "8899:AABB:CCDD:EEFF"
+            };
+
+        public static bool IsValid(ulong value) => value is not 0 and not 0xffff_ffff_ffff_ffff;
+    }
+}