Generate identicons if no profile picture is set

backend/src/main/java/org/cryptomator/hub/api/AuthorityDto.java

@@ -6,22 +6,6 @@
 
 abstract sealed class AuthorityDto permits UserDto, GroupDto {
 
-	private static final String DEFAULT_USER_IMAGE_URI = """
-			data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHZpZXdCb3g9IjAgMCAyMCAyMCIgZmlsbD0iYmxhY2siIGNsYXNzPSJ3LT\
-			UgaC01Ij4gICA8Y2lyY2xlIGN4PSIxMCIgY3k9IjEwIiByPSIxMCIgZmlsbD0id2hpdGUiIC8+ICAgPHBhdGggZD0iTTEwIDhhMyAzIDAgMTAwLTYgMyAzIDAgMDAwIDZ6TTMuND\
-			Y1IDE0LjQ5M2ExLjIzIDEuMjMgMCAwMC40MSAxLjQxMkE5Ljk1NyA5Ljk1NyAwIDAwMTAgMThjMi4zMSAwIDQuNDM4LS43ODQgNi4xMzEtMi4xLjQzLS4zMzMuNjA0LS45MDMuND\
-			A4LTEuNDFhNy4wMDIgNy4wMDIgMCAwMC0xMy4wNzQuMDAzeiIgLz4gPC9zdmc+
-			""";
-	private static final String DEFAULT_GROUP_IMAGE_URI = """
-			data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHZpZXdCb3g9IjAgMCAyMCAyMCIgZmlsbD0iYmxhY2siIGNsYXNzPSJ3LT\
-			UgaC01Ij4gICA8Y2lyY2xlIGN4PSIxMCIgY3k9IjEwIiByPSIxMCIgZmlsbD0id2hpdGUiIC8+ICAgPHBhdGggZD0iTTEwIDlhMyAzIDAgMTAwLTYgMyAzIDAgMDAwIDZ6TTYgOG\
-			EyIDIgMCAxMS00IDAgMiAyIDAgMDE0IDB6TTEuNDkgMTUuMzI2YS43OC43OCAwIDAxLS4zNTgtLjQ0MiAzIDMgMCAwMTQuMzA4LTMuNTE2IDYuNDg0IDYuNDg0IDAgMDAtMS45MD\
-			UgMy45NTljLS4wMjMuMjIyLS4wMTQuNDQyLjAyNS42NTRhNC45NyA0Ljk3IDAgMDEtMi4wNy0uNjU1ek0xNi40NCAxNS45OGE0Ljk3IDQuOTcgMCAwMDIuMDctLjY1NC43OC43OC\
-			AwIDAwLjM1Ny0uNDQyIDMgMyAwIDAwLTQuMzA4LTMuNTE3IDYuNDg0IDYuNDg0IDAgMDExLjkwNyAzLjk2IDIuMzIgMi4zMiAwIDAxLS4wMjYuNjU0ek0xOCA4YTIgMiAwIDExLT\
-			QgMCAyIDIgMCAwMTQgMHpNNS4zMDQgMTYuMTlhLjg0NC44NDQgMCAwMS0uMjc3LS43MSA1IDUgMCAwMTkuOTQ3IDAgLjg0My44NDMgMCAwMS0uMjc3LjcxQTYuOTc1IDYuOTc1ID\
-			AgMDExMCAxOGE2Ljk3NCA2Ljk3NCAwIDAxLTQuNjk2LTEuODF6IiAvPiA8L3N2Zz4=
-			""";
-
 	public enum Type {
 		USER, GROUP
 	}
@@ -42,10 +26,7 @@ protected AuthorityDto(String id, Type type, String name, String pictureUrl) {
 		this.id = id;
 		this.type = type;
 		this.name = name;
-		this.pictureUrl = Objects.requireNonNullElseGet(pictureUrl, () -> switch (type) {
-			case USER -> DEFAULT_USER_IMAGE_URI;
-			case GROUP -> DEFAULT_GROUP_IMAGE_URI;
-		});
+		this.pictureUrl = pictureUrl;
 	}
 
 }

frontend/package.json

@@ -51,6 +51,7 @@
     "@heroicons/vue": "^2.0.11",
     "axios": "^0.27.2",
     "file-saver": "^2.0.5",
+    "jdenticon": "^3.2.0",
     "jszip": "^3.9.1",
     "keycloak-js": "^18.0.0",
     "miscreant": "^0.3.2",

frontend/src/common/backend.ts

@@ -1,4 +1,6 @@
 import AxiosStatic, { AxiosRequestConfig, AxiosResponse } from 'axios';
+import { JdenticonConfig, toSvg } from 'jdenticon';
+import { base64 } from 'rfc4648';
 import authPromise from './auth';
 import { backendBaseURL } from './config';
 import { VaultKeys } from './crypto';
@@ -56,35 +58,94 @@ enum AuthorityType {
 }
 
 abstract class AuthorityDto {
-  constructor(public id: string, public name: string, public type: AuthorityType, public pictureUrl: string) { }
+
+  private _pictureUrl?: string;
+
+  constructor(public id: string, public name: string, public type: AuthorityType, pictureUrl?: string) {
+    this._pictureUrl = pictureUrl;
+  }
+
+  public get pictureUrl() {
+    if (this._pictureUrl) {
+      return this._pictureUrl;
+    } else {
+      switch (this.type) {
+        case AuthorityType.User:
+      }
+      const svg = toSvg(this.id, 100, this.getIdenticonConfig());
+      const bytes = new TextEncoder().encode(svg);
+      return `data:image/svg+xml;base64,${base64.stringify(bytes)}`;
+    }
+  }
+
+  abstract getIdenticonConfig(): JdenticonConfig;
+
 }
 
 export class UserDto extends AuthorityDto {
-  constructor(public id: string, public name: string, public type: AuthorityType, public pictureUrl: string, public email: string, public devices: DeviceDto[]) {
+  constructor(public id: string, public name: string, public type: AuthorityType, public email: string, public devices: DeviceDto[], pictureUrl?: string) {
     super(id, name, type, pictureUrl);
   }
 
+  getIdenticonConfig(): JdenticonConfig {
+    return {
+      hues: [6, 28, 48, 121, 283],
+      saturation: {
+        color: 0.59,
+      },
+      lightness: {
+        color: [0.32, 0.49],
+        grayscale: [0.32, 0.49]
+      },
+      backColor: '#F7F7F7',
+      padding: 0
+    };
+  }
+
   static typeOf(obj: any): obj is UserDto {
     const userDto = obj as UserDto;
     return typeof userDto.id === 'string'
       && typeof userDto.name === 'string'
-      && typeof userDto.pictureUrl === 'string'
+      && (typeof userDto.pictureUrl === 'string' || userDto.pictureUrl === null)
       && userDto.type === AuthorityType.User;
   }
+
+  static copy(obj: UserDto): UserDto {
+    return new UserDto(obj.id, obj.name, obj.type, obj.email, obj.devices, obj.pictureUrl);
+  }
 }
 
 export class GroupDto extends AuthorityDto {
-  constructor(public id: string, public name: string, public type: AuthorityType, public pictureUrl: string) {
+  constructor(public id: string, public name: string, public type: AuthorityType, pictureUrl: string) {
     super(id, name, type, pictureUrl);
   }
 
+  getIdenticonConfig(): JdenticonConfig {
+    return {
+      hues: [190],
+      saturation: {
+        color: 0.59
+      },
+      lightness: {
+        color: [0.81, 0.97],
+        grayscale: [0.81, 0.97]
+      },
+      backColor: '#005E71',
+      padding: 0
+    };
+  }
+
   static typeOf(obj: any): obj is GroupDto {
     const groupDto = obj as GroupDto;
     return typeof groupDto.id === 'string'
       && typeof groupDto.name === 'string'
-      && typeof groupDto.pictureUrl === 'string'
+      && (typeof groupDto.pictureUrl === 'string' || groupDto.pictureUrl === null)
       && groupDto.type === AuthorityType.Group;
   }
+
+  static copy(obj: GroupDto): GroupDto {
+    return new GroupDto(obj.id, obj.name, obj.type, obj.pictureUrl);
+  }
 }
 
 export type BillingDto = {
@@ -128,9 +189,9 @@ class VaultService {
     return axiosAuth.get<(UserDto | GroupDto)[]>(`/vaults/${vaultId}/members`, { headers: { 'Cryptomator-Vault-Admin-Authorization': vaultAdminAuthorizationJWT } }).then(response => {
       return response.data.map(authority => {
         if (UserDto.typeOf(authority)) {
-          return new UserDto(authority.id, authority.name, authority.type, authority.pictureUrl, authority.email, authority.devices);
+          return UserDto.copy(authority);
         } else if (GroupDto.typeOf(authority)) {
-          return new GroupDto(authority.id, authority.name, authority.type, authority.pictureUrl);
+          return GroupDto.copy(authority);
         } else {
           throw new Error('Provided data is not of type UserDTO or GroupDTO');
         }
@@ -200,11 +261,13 @@ class UserService {
     return axiosAuth.put('/users/me');
   }
   public async me(withDevices: boolean = false, withAccessibleVaults: boolean = false): Promise<UserDto> {
-    return axiosAuth.get<UserDto>(`/users/me?withDevices=${withDevices}&withAccessibleVaults=${withAccessibleVaults}`).then(response => response.data);
+    return axiosAuth.get<UserDto>(`/users/me?withDevices=${withDevices}&withAccessibleVaults=${withAccessibleVaults}`).then(response => UserDto.copy(response.data));
   }
 
   public async listAll(): Promise<UserDto[]> {
-    return axiosAuth.get<UserDto[]>('/users/').then(response => response.data);
+    return axiosAuth.get<UserDto[]>('/users/').then(response => {
+      return response.data.map(dto => UserDto.copy(dto));
+    });
   }
 
 }
@@ -214,9 +277,9 @@ class AuthorityService {
     return axiosAuth.get<(UserDto | GroupDto)[]>(`/authorities/search?query=${query}`).then(response => {
       return response.data.map(authority => {
         if (UserDto.typeOf(authority)) {
-          return new UserDto(authority.id, authority.name, authority.type, authority.pictureUrl, authority.email, authority.devices);
+          return UserDto.copy(authority);
         } else if (GroupDto.typeOf(authority)) {
-          return new GroupDto(authority.id, authority.name, authority.type, authority.pictureUrl);
+          return GroupDto.copy(authority);
         } else {
           throw new Error('Provided data is not of type UserDTO or GroupDTO');
         }