Introduce support for 3rd-party auth (OAuth2 & LDAP)

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

config/config.exs

@@ -118,6 +118,30 @@ config :guardian, Guardian.DB,
 
 config :elixir, :time_zone_database, Tzdata.TimeZoneDatabase
 
+config :mobilizon,
+       Mobilizon.Service.Auth.Authenticator,
+       Mobilizon.Service.Auth.MobilizonAuthenticator
+
+config :ueberauth,
+       Ueberauth,
+       providers: []
+
+config :mobilizon, :auth, oauth_consumer_strategies: []
+
+config :mobilizon, :ldap,
+  enabled: System.get_env("LDAP_ENABLED") == "true",
+  host: System.get_env("LDAP_HOST") || "localhost",
+  port: String.to_integer(System.get_env("LDAP_PORT") || "389"),
+  ssl: System.get_env("LDAP_SSL") == "true",
+  sslopts: [],
+  tls: System.get_env("LDAP_TLS") == "true",
+  tlsopts: [],
+  base: System.get_env("LDAP_BASE") || "dc=example,dc=com",
+  uid: System.get_env("LDAP_UID") || "cn",
+  require_bind_for_search: !(System.get_env("LDAP_REQUIRE_BIND_FOR_SEARCH") == "false"),
+  bind_uid: System.get_env("LDAP_BIND_UID"),
+  bind_password: System.get_env("LDAP_BIND_PASSWORD")
+
 config :geolix,
   databases: [
     %{

js/src/components/User/AuthProvider.vue

@@ -0,0 +1,26 @@
+<template>
+  <a
+    class="button is-light"
+    v-if="Object.keys(SELECTED_PROVIDERS).includes(oauthProvider.id)"
+    :href="`/auth/${oauthProvider.id}`"
+  >
+    <b-icon :icon="oauthProvider.id" />
+    <span>{{ SELECTED_PROVIDERS[oauthProvider.id] }}</span></a
+  >
+  <a class="button is-light" :href="`/auth/${oauthProvider.id}`" v-else>
+    <b-icon icon="lock" />
+    <span>{{ oauthProvider.label }}</span>
+  </a>
+</template>
+<script lang="ts">
+import { Component, Vue, Prop } from "vue-property-decorator";
+import { IOAuthProvider } from "../../types/config.model";
+import { SELECTED_PROVIDERS } from "../../utils/auth";
+
+@Component
+export default class AuthProvider extends Vue {
+  @Prop({ required: true, type: Object }) oauthProvider!: IOAuthProvider;
+
+  SELECTED_PROVIDERS = SELECTED_PROVIDERS;
+}
+</script>

js/src/components/User/AuthProviders.vue

@@ -0,0 +1,26 @@
+<template>
+  <div>
+    <b>{{ $t("Sign in with") }}</b>
+    <div class="buttons">
+      <auth-provider
+        v-for="provider in oauthProviders"
+        :oauthProvider="provider"
+        :key="provider.id"
+      />
+    </div>
+  </div>
+</template>
+<script lang="ts">
+import { Component, Vue, Prop } from "vue-property-decorator";
+import { IOAuthProvider } from "../../types/config.model";
+import AuthProvider from "./AuthProvider.vue";
+
+@Component({
+  components: {
+    AuthProvider,
+  },
+})
+export default class AuthProviders extends Vue {
+  @Prop({ required: true, type: Array }) oauthProviders!: IOAuthProvider[];
+}
+</script>

js/src/graphql/config.ts

@@ -62,6 +62,13 @@ export const CONFIG = gql`
       features {
         groups
       }
+      auth {
+        ldap
+        oauthProviders {
+          id
+          label
+        }
+      }
     }
   }
 `;

js/src/graphql/user.ts

@@ -35,6 +35,15 @@ export const LOGGED_USER = gql`
     loggedUser {
       id
       email
+      defaultActor {
+        id
+        preferredUsername
+        name
+        avatar {
+          url
+        }
+      }
+      provider
     }
   }
 `;
@@ -64,7 +73,7 @@ export const VALIDATE_EMAIL = gql`
 `;
 
 export const DELETE_ACCOUNT = gql`
-  mutation DeleteAccount($password: String, $userId: ID!) {
+  mutation DeleteAccount($password: String, $userId: ID) {
     deleteAccount(password: $password, userId: $userId) {
       id
     }

js/src/i18n/en_US.json

@@ -703,5 +703,10 @@
   "New discussion": "New discussion",
   "Create a discussion": "Create a discussion",
   "Create the discussion": "Create the discussion",
-  "View all discussions": "View all discussions"
+  "View all discussions": "View all discussions",
+  "Sign in with": "Sign in with",
+  "Your email address was automatically set based on your {provider} account.": "Your email address was automatically set based on your {provider} account.",
+  "You can't change your password because you are registered through {provider}.": "You can't change your password because you are registered through {provider}.",
+  "Error while login with {provider}. Retry or login another way.": "Error while login with {provider}. Retry or login another way.",
+  "Error while login with {provider}. This login provider doesn't exist.": "Error while login with {provider}. This login provider doesn't exist."
 }

js/src/i18n/fr_FR.json

@@ -703,5 +703,10 @@
   "{number} participations": "Aucune participation|Une participation|{number} participations",
   "{profile} (by default)": "{profile} (par défault)",
   "{title} ({count} todos)": "{title} ({count} todos)",
-  "© The OpenStreetMap Contributors": "© Les Contributeur⋅ices OpenStreetMap"
+  "© The OpenStreetMap Contributors": "© Les Contributeur⋅ices OpenStreetMap",
+  "Sign in with": "Se connecter avec",
+  "Your email address was automatically set based on your {provider} account.": "Votre adresse email a été définie automatiquement en se basant sur votre compte {provider}.",
+  "You can't change your password because you are registered through {provider}.": "Vous ne pouvez pas changer votre mot de passe car vous vous êtes enregistré via {provider}.",
+  "Error while login with {provider}. Retry or login another way.": "Erreur lors de la connexion avec {provider}. Réessayez ou bien connectez vous autrement.",
+  "Error while login with {provider}. This login provider doesn't exist.": "Erreur lors de la connexion avec {provider}. Cette méthode de connexion n'existe pas."
 }

js/src/router/index.ts

@@ -112,6 +112,11 @@ const router = new Router({
       component: () => import(/* webpackChunkName: "cookies" */ "@/views/Interact.vue"),
       meta: { requiredAuth: false },
     },
+    {
+      path: "/auth/:provider/callback",
+      name: "auth-callback",
+      component: () => import("@/views/User/ProviderValidation.vue"),
+    },
     {
       path: "/404",
       name: RouteName.PAGE_NOT_FOUND,

js/src/types/config.model.ts

@@ -74,4 +74,13 @@ export interface IConfig {
   };
   federating: boolean;
   version: string;
+  auth: {
+    ldap: boolean;
+    oauthProviders: IOAuthProvider[];
+  };
+}
+
+export interface IOAuthProvider {
+  id: string;
+  label: string;
 }

js/src/types/current-user.model.ts

@@ -9,15 +9,11 @@ export enum ICurrentUserRole {
 }
 
 export interface ICurrentUser {
-  id: number;
+  id: string;
   email: string;
   isLoggedIn: boolean;
   role: ICurrentUserRole;
-  participations: Paginate<IParticipant>;
+  defaultActor?: IPerson;
-  defaultActor: IPerson;
-  drafts: IEvent[];
-  settings: IUserSettings;
-  locale: string;
 }
 
 export interface IUser extends ICurrentUser {
@@ -25,6 +21,22 @@ export interface IUser extends ICurrentUser {
   confirmationSendAt: Date;
   actors: IPerson[];
   disabled: boolean;
+  participations: Paginate<IParticipant>;
+  drafts: IEvent[];
+  settings: IUserSettings;
+  locale: string;
+  provider?: string;
+}
+
+export enum IAuthProvider {
+  LDAP = "ldap",
+  GOOGLE = "google",
+  DISCORD = "discord",
+  GITHUB = "github",
+  KEYCLOAK = "keycloak",
+  FACEBOOK = "facebook",
+  GITLAB = "gitlab",
+  TWITTER = "twitter",
 }
 
 export enum INotificationPendingParticipationEnum {

js/src/types/login-error-code.model.ts

@@ -6,4 +6,6 @@ export enum LoginError {
   USER_NOT_CONFIRMED = "User account not confirmed",
   USER_DOES_NOT_EXIST = "No user with this email was found",
   USER_EMAIL_PASSWORD_INVALID = "Impossible to authenticate, either your email or password are invalid.",
+  LOGIN_PROVIDER_ERROR = "Error with Login Provider",
+  LOGIN_PROVIDER_NOT_FOUND = "Login Provider not found",
 }

js/src/utils/auth.ts

@@ -94,3 +94,14 @@ export async function logout(apollo: ApolloClient<NormalizedCacheObject>) {
 
   deleteUserData();
 }
+
+export const SELECTED_PROVIDERS: { [key: string]: string } = {
+  twitter: "Twitter",
+  discord: "Discord",
+  facebook: "Facebook",
+  github: "Github",
+  gitlab: "Gitlab",
+  google: "Google",
+  keycloak: "Keycloak",
+  ldap: "LDAP",
+};

js/src/views/Settings/AccountSettings.vue

@@ -1,5 +1,5 @@
 <template>
-  <div>
+  <div v-if="loggedUser">
     <nav class="breadcrumb" aria-label="breadcrumbs">
       <ul>
         <li>
@@ -24,6 +24,13 @@
       >
         <b slot="email">{{ loggedUser.email }}</b>
       </i18n>
+      <b-message v-if="!canChangeEmail" type="is-warning" :closable="false">
+        {{
+          $t("Your email address was automatically set based on your {provider} account.", {
+            provider: providerName(loggedUser.provider),
+          })
+        }}
+      </b-message>
       <b-notification
         type="is-danger"
         has-icon
@@ -33,7 +40,7 @@
         v-for="error in changeEmailErrors"
         >{{ error }}</b-notification
       >
-      <form @submit.prevent="resetEmailAction" ref="emailForm" class="form">
+      <form @submit.prevent="resetEmailAction" ref="emailForm" class="form" v-if="canChangeEmail">
         <b-field :label="$t('New email')">
           <b-input aria-required="true" required type="email" v-model="newEmail" />
         </b-field>
@@ -58,6 +65,13 @@
       <div class="setting-title">
         <h2>{{ $t("Password") }}</h2>
       </div>
+      <b-message v-if="!canChangePassword" type="is-warning" :closable="false">
+        {{
+          $t("You can't change your password because you are registered through {provider}.", {
+            provider: providerName(loggedUser.provider),
+          })
+        }}
+      </b-message>
       <b-notification
         type="is-danger"
         has-icon
@@ -67,7 +81,12 @@
         v-for="error in changePasswordErrors"
         >{{ error }}</b-notification
       >
-      <form @submit.prevent="resetPasswordAction" ref="passwordForm" class="form">
+      <form
+        @submit.prevent="resetPasswordAction"
+        ref="passwordForm"
+        class="form"
+        v-if="canChangePassword"
+      >
         <b-field :label="$t('Old password')">
           <b-input
             aria-required="true"
@@ -124,11 +143,11 @@
                     <br />
                     <b>{{ $t("There will be no way to recover your data.") }}</b>
                   </p>
-                  <p class="content">
+                  <p class="content" v-if="hasUserGotAPassword">
                     {{ $t("Please enter your password to confirm this action.") }}
                   </p>
                   <form @submit.prevent="deleteAccount">
-                    <b-field>
+                    <b-field v-if="hasUserGotAPassword">
                       <b-input
                         type="password"
                         v-model="passwordForAccountDeletion"
@@ -160,8 +179,8 @@
 import { Component, Vue, Ref } from "vue-property-decorator";
 import { CHANGE_EMAIL, CHANGE_PASSWORD, DELETE_ACCOUNT, LOGGED_USER } from "../../graphql/user";
 import RouteName from "../../router/name";
-import { ICurrentUser } from "../../types/current-user.model";
+import { IUser, IAuthProvider } from "../../types/current-user.model";
-import { logout } from "../../utils/auth";
+import { logout, SELECTED_PROVIDERS } from "../../utils/auth";
 
 @Component({
   apollo: {
@@ -171,7 +190,7 @@ import { logout } from "../../utils/auth";
 export default class AccountSettings extends Vue {
   @Ref("passwordForm") readonly passwordForm!: HTMLElement;
 
-  loggedUser!: ICurrentUser;
+  loggedUser!: IUser;
 
   passwordForEmailChange = "";
 
@@ -243,7 +262,7 @@ export default class AccountSettings extends Vue {
       await this.$apollo.mutate({
         mutation: DELETE_ACCOUNT,
         variables: {
-          password: this.passwordForAccountDeletion,
+          password: this.hasUserGotAPassword ? this.passwordForAccountDeletion : null,
         },
       });
       await logout(this.$apollo.provider.defaultClient);
@@ -260,6 +279,28 @@ export default class AccountSettings extends Vue {
     }
   }
 
+  get canChangePassword() {
+    return !this.loggedUser.provider;
+  }
+
+  get canChangeEmail() {
+    return !this.loggedUser.provider;
+  }
+
+  providerName(id: string) {
+    if (SELECTED_PROVIDERS[id]) {
+      return SELECTED_PROVIDERS[id];
+    }
+    return id;
+  }
+
+  get hasUserGotAPassword(): boolean {
+    return (
+      this.loggedUser &&
+      (this.loggedUser.provider == null || this.loggedUser.provider == IAuthProvider.LDAP)
+    );
+  }
+
   private handleErrors(type: string, err: any) {
     console.error(err);
 

js/src/views/Settings/Notifications.vue

@@ -95,10 +95,7 @@
 <script lang="ts">
 import { Component, Vue, Watch } from "vue-property-decorator";
 import { USER_SETTINGS, SET_USER_SETTINGS } from "../../graphql/user";
-import {
+import { IUser, INotificationPendingParticipationEnum } from "../../types/current-user.model";
-  ICurrentUser,
-  INotificationPendingParticipationEnum,
-} from "../../types/current-user.model";
 import RouteName from "../../router/name";
 
 @Component({
@@ -107,7 +104,7 @@ import RouteName from "../../router/name";
   },
 })
 export default class Notifications extends Vue {
-  loggedUser!: ICurrentUser;
+  loggedUser!: IUser;
 
   notificationOnDay = true;
 

js/src/views/Settings/Preferences.vue

@@ -52,7 +52,7 @@ import { Component, Vue, Watch } from "vue-property-decorator";
 import { TIMEZONES } from "../../graphql/config";
 import { USER_SETTINGS, SET_USER_SETTINGS, UPDATE_USER_LOCALE } from "../../graphql/user";
 import { IConfig } from "../../types/config.model";
-import { ICurrentUser } from "../../types/current-user.model";
+import { IUser } from "../../types/current-user.model";
 import langs from "../../i18n/langs.json";
 import RouteName from "../../router/name";
 
@@ -65,7 +65,7 @@ import RouteName from "../../router/name";
 export default class Preferences extends Vue {
   config!: IConfig;
 
-  loggedUser!: ICurrentUser;
+  loggedUser!: IUser;
 
   selectedTimezone: string | null = null;
 
@@ -74,7 +74,7 @@ export default class Preferences extends Vue {
   RouteName = RouteName;
 
   @Watch("loggedUser")
-  setSavedTimezone(loggedUser: ICurrentUser) {
+  setSavedTimezone(loggedUser: IUser) {
     if (loggedUser && loggedUser.settings.timezone) {
       this.selectedTimezone = loggedUser.settings.timezone;
     } else {

js/src/views/User/Login.vue

@@ -10,6 +10,26 @@
           :aria-close-label="$t('Close')"
           >{{ $t("You need to login.") }}</b-message
         >
+        <b-message
+          v-else-if="errorCode === LoginError.LOGIN_PROVIDER_ERROR"
+          type="is-danger"
+          :aria-close-label="$t('Close')"
+          >{{
+            $t("Error while login with {provider}. Retry or login another way.", {
+              provider: $route.query.provider,
+            })
+          }}</b-message
+        >
+        <b-message
+          v-else-if="errorCode === LoginError.LOGIN_PROVIDER_NOT_FOUND"
+          type="is-danger"
+          :aria-close-label="$t('Close')"
+          >{{
+            $t("Error while login with {provider}. This login provider doesn't exist.", {
+              provider: $route.query.provider,
+            })
+          }}</b-message
+        >
         <b-message title="Error" type="is-danger" v-for="error in errors" :key="error">
           <span v-if="error === LoginError.USER_NOT_CONFIRMED">
             <span>
@@ -60,6 +80,11 @@
           <p class="control has-text-centered">
             <button class="button is-primary is-large">{{ $t("Login") }}</button>
           </p>
+
+          <div class="control" v-if="config && config.auth.oauthProviders.length > 0">
+            <auth-providers :oauthProviders="config.auth.oauthProviders" />
+          </div>
+
           <p class="control">
             <router-link
               class="button is-text"
@@ -103,6 +128,7 @@ import { LoginErrorCode, LoginError } from "../../types/login-error-code.model";
 import { ICurrentUser } from "../../types/current-user.model";
 import { CONFIG } from "../../graphql/config";
 import { IConfig } from "../../types/config.model";
+import AuthProviders from "../../components/User/AuthProviders.vue";
 
 @Component({
   apollo: {
@@ -113,6 +139,9 @@ import { IConfig } from "../../types/config.model";
       query: CURRENT_USER_CLIENT,
     },
   },
+  components: {
+    AuthProviders,
+  },
   metaInfo() {
     return {
       // if no subcomponents specify a metaInfo.title, this title will be used

js/src/views/User/ProviderValidation.vue

@@ -0,0 +1,64 @@
+<template> </template>
+<script lang="ts">
+import { Component, Prop, Vue } from "vue-property-decorator";
+import { VALIDATE_USER, UPDATE_CURRENT_USER_CLIENT, LOGGED_USER } from "../../graphql/user";
+import RouteName from "../../router/name";
+import { saveUserData, changeIdentity } from "../../utils/auth";
+import { ILogin } from "../../types/login.model";
+import { ICurrentUserRole, ICurrentUser, IUser } from "../../types/current-user.model";
+import { IDENTITIES } from "../../graphql/actor";
+
+@Component
+export default class ProviderValidate extends Vue {
+  async mounted() {
+    const accessToken = this.getValueFromMeta("auth-access-token");
+    const refreshToken = this.getValueFromMeta("auth-refresh-token");
+    const userId = this.getValueFromMeta("auth-user-id");
+    const userEmail = this.getValueFromMeta("auth-user-email");
+    const userRole = this.getValueFromMeta("auth-user-role") as ICurrentUserRole;
+    const userActorId = this.getValueFromMeta("auth-user-actor-id");
+
+    if (!(userId && userEmail && userRole && accessToken && refreshToken)) {
+      return this.$router.push("/");
+    }
+    const login = {
+      user: { id: userId, email: userEmail, role: userRole, isLoggedIn: true },
+      accessToken,
+      refreshToken,
+    };
+    saveUserData(login);
+    await this.$apollo.mutate({
+      mutation: UPDATE_CURRENT_USER_CLIENT,
+      variables: {
+        id: userId,
+        email: userEmail,
+        isLoggedIn: true,
+        role: ICurrentUserRole.USER,
+      },
+    });
+    const { data } = await this.$apollo.query<{ loggedUser: IUser }>({
+      query: LOGGED_USER,
+    });
+    const { loggedUser } = data;
+
+    if (loggedUser.defaultActor) {
+      await changeIdentity(this.$apollo.provider.defaultClient, loggedUser.defaultActor);
+      await this.$router.push({ name: RouteName.HOME });
+    } else {
+      // If the user didn't register any profile yet, let's create one for them
+      await this.$router.push({
+        name: RouteName.REGISTER_PROFILE,
+        params: { email: loggedUser.email, userAlreadyActivated: "true" },
+      });
+    }
+  }
+
+  getValueFromMeta(name: string) {
+    const element = document.querySelector(`meta[name="${name}"]`);
+    if (element && element.getAttribute("content")) {
+      return element.getAttribute("content");
+    }
+    return null;
+  }
+}
+</script>

js/src/views/User/Register.vue

@@ -96,6 +96,7 @@
                 {{ $t("Register") }}
               </b-button>
             </p>
+
             <p class="control">
               <router-link
                 class="button is-text"
@@ -113,6 +114,11 @@
                 >{{ $t("Login") }}</router-link
               >
             </p>
+
+            <hr />
+            <div class="control" v-if="config && config.auth.oauthProviders.length > 0">
+              <auth-providers :oauthProviders="config.auth.oauthProviders" />
+            </div>
           </form>
 
           <div v-if="errors.length > 0">
@@ -131,9 +137,10 @@ import RouteName from "../../router/name";
 import { IConfig } from "../../types/config.model";
 import { CONFIG } from "../../graphql/config";
 import Subtitle from "../../components/Utils/Subtitle.vue";
+import AuthProviders from "../../components/User/AuthProviders.vue";
 
 @Component({
-  components: { Subtitle },
+  components: { Subtitle, AuthProviders },
   metaInfo() {
     return {
       // if no subcomponents specify a metaInfo.title, this title will be used

js/src/views/User/Validate.vue

@@ -18,7 +18,7 @@
 import { Component, Prop, Vue } from "vue-property-decorator";
 import { VALIDATE_USER, UPDATE_CURRENT_USER_CLIENT } from "../../graphql/user";
 import RouteName from "../../router/name";
-import { saveUserData, changeIdentity } from "../../utils/auth";
+import { saveUserData, saveTokenData, changeIdentity } from "../../utils/auth";
 import { ILogin } from "../../types/login.model";
 import { ICurrentUserRole } from "../../types/current-user.model";
 
@@ -45,6 +45,7 @@ export default class Validate extends Vue {
 
       if (data) {
         saveUserData(data.validateUser);
+        saveTokenData(data.validateUser);
 
         const { user } = data.validateUser;
 

lib/graphql/resolvers/config.ex

@@ -124,7 +124,11 @@ defmodule Mobilizon.GraphQL.Resolvers.Config do
       },
       rules: Config.instance_rules(),
       version: Config.instance_version(),
-      federating: Config.instance_federating()
+      federating: Config.instance_federating(),
+      auth: %{
+        ldap: Config.ldap_enabled?(),
+        oauth_providers: Config.oauth_consumer_strategies()
+      }
     }
   end
 end

lib/graphql/resolvers/person.ex

@@ -202,10 +202,12 @@ defmodule Mobilizon.GraphQL.Resolvers.Person do
   """
   def register_person(_parent, args, _resolution) do
     with {:ok, %User{} = user} <- Users.get_user_by_email(args.email),
-         {:no_actor, nil} <- {:no_actor, Users.get_actor_for_user(user)},
+         user_actor <- Users.get_actor_for_user(user),
+         no_actor <- is_nil(user_actor),
+         {:no_actor, true} <- {:no_actor, no_actor},
          args <- Map.put(args, :user_id, user.id),
          args <- save_attached_pictures(args),
-         {:ok, %Actor{} = new_person} <- Actors.new_person(args) do
+         {:ok, %Actor{} = new_person} <- Actors.new_person(args, true) do
       {:ok, new_person}
     else
       {:error, :user_not_found} ->

lib/graphql/resolvers/user.ex

@@ -9,6 +9,7 @@ defmodule Mobilizon.GraphQL.Resolvers.User do
   alias Mobilizon.Actors.Actor
   alias Mobilizon.Crypto
   alias Mobilizon.Federation.ActivityPub
+  alias Mobilizon.Service.Auth.Authenticator
   alias Mobilizon.Storage.{Page, Repo}
   alias Mobilizon.Users.{Setting, User}
 
@@ -59,18 +60,16 @@ defmodule Mobilizon.GraphQL.Resolvers.User do
   Login an user. Returns a token and the user
   """
   def login_user(_parent, %{email: email, password: password}, _resolution) do
-    with {:ok, %User{confirmed_at: %DateTime{}} = user} <- Users.get_user_by_email(email),
+    case Authenticator.authenticate(email, password) do
-         {:ok, %{access_token: access_token, refresh_token: refresh_token}} <-
+      {:ok,
-           Users.authenticate(%{user: user, password: password}) do
+       %{access_token: _access_token, refresh_token: _refresh_token, user: _user} =
-      {:ok, %{access_token: access_token, refresh_token: refresh_token, user: user}}
+           user_and_tokens} ->
-    else
+        {:ok, user_and_tokens}
-      {:ok, %User{confirmed_at: nil} = _user} ->
-        {:error, "User account not confirmed"}
 
       {:error, :user_not_found} ->
         {:error, "No user with this email was found"}
 
-      {:error, :unauthorized} ->
+      {:error, _error} ->
         {:error, "Impossible to authenticate, either your email or password are invalid."}
     end
   end
@@ -82,7 +81,7 @@ defmodule Mobilizon.GraphQL.Resolvers.User do
     with {:ok, user, _claims} <- Auth.Guardian.resource_from_token(refresh_token),
          {:ok, _old, {exchanged_token, _claims}} <-
            Auth.Guardian.exchange(refresh_token, ["access", "refresh"], "access"),
-         {:ok, refresh_token} <- Users.generate_refresh_token(user) do
+         {:ok, refresh_token} <- Authenticator.generate_refresh_token(user) do
       {:ok, %{access_token: exchanged_token, refresh_token: refresh_token}}
     else
       {:error, message} ->
@@ -151,7 +150,7 @@ defmodule Mobilizon.GraphQL.Resolvers.User do
            {:check_confirmation_token, Email.User.check_confirmation_token(token)},
          {:get_actor, actor} <- {:get_actor, Users.get_actor_for_user(user)},
          {:ok, %{access_token: access_token, refresh_token: refresh_token}} <-
-           Users.generate_tokens(user) do
+           Authenticator.generate_tokens(user) do
       {:ok,
        %{
          access_token: access_token,
@@ -192,10 +191,15 @@ defmodule Mobilizon.GraphQL.Resolvers.User do
   def send_reset_password(_parent, args, _resolution) do
     with email <- Map.get(args, :email),
          {:ok, %User{locale: locale} = user} <- Users.get_user_by_email(email, true),
+         {:can_reset_password, true} <-
+           {:can_reset_password, Authenticator.can_reset_password?(user)},
          {:ok, %Bamboo.Email{} = _email_html} <-
            Email.User.send_password_reset_email(user, Map.get(args, :locale, locale)) do
       {:ok, email}
     else
+      {:can_reset_password, false} ->
+        {:error, "This user can't reset their password"}
+
       {:error, :user_not_found} ->
         # TODO : implement rate limits for this endpoint
         {:error, "No user with this email was found"}
@@ -209,10 +213,10 @@ defmodule Mobilizon.GraphQL.Resolvers.User do
   Reset the password from an user
   """
   def reset_password(_parent, %{password: password, token: token}, _resolution) do
-    with {:ok, %User{} = user} <-
+    with {:ok, %User{email: email} = user} <-
            Email.User.check_reset_password_token(password, token),
          {:ok, %{access_token: access_token, refresh_token: refresh_token}} <-
-           Users.authenticate(%{user: user, password: password}) do
+           Authenticator.authenticate(email, password) do
       {:ok, %{access_token: access_token, refresh_token: refresh_token, user: user}}
     end
   end
@@ -295,10 +299,12 @@ defmodule Mobilizon.GraphQL.Resolvers.User do
   def change_password(
         _parent,
         %{old_password: old_password, new_password: new_password},
-        %{context: %{current_user: %User{password_hash: old_password_hash} = user}}
+        %{context: %{current_user: %User{} = user}}
       ) do
-    with {:current_password, true} <-
+    with {:can_change_password, true} <-
-           {:current_password, Argon2.verify_pass(old_password, old_password_hash)},
+           {:can_change_password, Authenticator.can_change_password?(user)},
+         {:current_password, {:ok, %User{}}} <-
+           {:current_password, Authenticator.login(user.email, old_password)},
          {:same_password, false} <- {:same_password, old_password == new_password},
          {:ok, %User{} = user} <-
            user
@@ -306,7 +312,7 @@ defmodule Mobilizon.GraphQL.Resolvers.User do
            |> Repo.update() do
       {:ok, user}
     else
-      {:current_password, false} ->
+      {:current_password, _} ->
         {:error, "The current password is invalid"}
 
       {:same_password, true} ->
@@ -323,10 +329,12 @@ defmodule Mobilizon.GraphQL.Resolvers.User do
   end
 
   def change_email(_parent, %{email: new_email, password: password}, %{
-        context: %{current_user: %User{email: old_email, password_hash: password_hash} = user}
+        context: %{current_user: %User{email: old_email} = user}
       }) do
-    with {:current_password, true} <-
+    with {:can_change_password, true} <-
-           {:current_password, Argon2.verify_pass(password, password_hash)},
+           {:can_change_password, Authenticator.can_change_email?(user)},
+         {:current_password, {:ok, %User{}}} <-
+           {:current_password, Authenticator.login(user.email, password)},
          {:same_email, false} <- {:same_email, new_email == old_email},
          {:email_valid, true} <- {:email_valid, Email.Checker.valid?(new_email)},
          {:ok, %User{} = user} <-
@@ -347,7 +355,7 @@ defmodule Mobilizon.GraphQL.Resolvers.User do
 
       {:ok, user}
     else
-      {:current_password, false} ->
+      {:current_password, _} ->
         {:error, "The password provided is invalid"}
 
       {:same_email, true} ->
@@ -377,14 +385,24 @@ defmodule Mobilizon.GraphQL.Resolvers.User do
     end
   end
 
-  def delete_account(_parent, %{password: password}, %{
+  def delete_account(_parent, args, %{
-        context: %{current_user: %User{password_hash: password_hash} = user}
+        context: %{current_user: %User{email: email} = user}
       }) do
-    case {:current_password, Argon2.verify_pass(password, password_hash)} do
+    with {:user_has_password, true} <- {:user_has_password, Authenticator.has_password?(user)},
-      {:current_password, true} ->
+         {:confirmation_password, password} when not is_nil(password) <-
+           {:confirmation_password, Map.get(args, :password)},
+         {:current_password, {:ok, _}} <-
+           {:current_password, Authenticator.authenticate(email, password)} do
+      do_delete_account(user)
+    else
+      # If the user hasn't got any password (3rd-party auth)
+      {:user_has_password, false} ->
         do_delete_account(user)
 
-      {:current_password, false} ->
+      {:confirmation_password, nil} ->
+        {:error, "The password provided is invalid"}
+
+      {:current_password, _} ->
         {:error, "The password provided is invalid"}
     end
   end

lib/graphql/schema/config.ex

@@ -39,6 +39,7 @@ defmodule Mobilizon.GraphQL.Schema.ConfigType do
     end
 
     field(:rules, :string, description: "The instance's rules")
+    field(:auth, :auth, description: "The instance auth methods")
   end
 
   object :terms do
@@ -132,6 +133,16 @@ defmodule Mobilizon.GraphQL.Schema.ConfigType do
     field(:groups, :boolean)
   end
 
+  object :auth do
+    field(:ldap, :boolean, description: "Whether or not LDAP auth is enabled")
+    field(:oauth_providers, list_of(:oauth_provider), description: "List of oauth providers")
+  end
+
+  object :oauth_provider do
+    field(:id, :string, description: "The provider ID")
+    field(:label, :string, description: "The label for the auth provider")
+  end
+
   object :config_queries do
     @desc "Get the instance config"
     field :config, :config do

lib/graphql/schema/user.ex

@@ -52,6 +52,8 @@ defmodule Mobilizon.GraphQL.Schema.UserType do
 
     field(:locale, :string, description: "The user's locale")
 
+    field(:provider, :string, description: "The user's login provider")
+
     field(:disabled, :boolean, description: "Whether the user is disabled")
 
     field(:participations, :paginated_participant_list,

lib/mobilizon/actors/actors.ex

@@ -13,6 +13,7 @@ defmodule Mobilizon.Actors do
   alias Mobilizon.Media.File
   alias Mobilizon.Service.Workers
   alias Mobilizon.Storage.{Page, Repo}
+  alias Mobilizon.Users
 
   alias Mobilizon.Federation.ActivityPub
 
@@ -189,14 +190,19 @@ defmodule Mobilizon.Actors do
   Creates a new person actor.
   """
   @spec new_person(map) :: {:ok, Actor.t()} | {:error, Ecto.Changeset.t()}
-  def new_person(args) do
+  def new_person(args, default_actor \\ false) do
     args = Map.put(args, :keys, Crypto.generate_rsa_2048_private_key())
 
-    with {:ok, %Actor{} = person} <-
+    with {:ok, %Actor{id: person_id} = person} <-
            %Actor{}
            |> Actor.registration_changeset(args)
            |> Repo.insert() do
-      Events.create_feed_token(%{user_id: args["user_id"], actor_id: person.id})
+      Events.create_feed_token(%{user_id: args.user_id, actor_id: person.id})
+
+      if default_actor do
+        user = Users.get_user!(args.user_id)
+        Users.update_user(user, %{default_actor_id: person_id})
+      end
 
       {:ok, person}
     end

lib/mobilizon/config.ex

@@ -186,6 +186,24 @@ defmodule Mobilizon.Config do
   def anonymous_reporting?,
     do: Application.get_env(:mobilizon, :anonymous)[:reports][:allowed]
 
+  @spec oauth_consumer_strategies() :: list({atom(), String.t()})
+  def oauth_consumer_strategies do
+    [:auth, :oauth_consumer_strategies]
+    |> get([])
+    |> Enum.map(fn strategy ->
+      case strategy do
+        {id, label} when is_atom(id) -> %{id: id, label: label}
+        id when is_atom(id) -> %{id: id, label: nil}
+      end
+    end)
+  end
+
+  @spec oauth_consumer_enabled? :: boolean()
+  def oauth_consumer_enabled?, do: oauth_consumer_strategies() != []
+
+  @spec ldap_enabled? :: boolean()
+  def ldap_enabled?, do: get([:ldap, :enabled], false)
+
   def instance_resource_providers do
     types = get_in(Application.get_env(:mobilizon, Mobilizon.Service.ResourceProviders), [:types])
 

lib/mobilizon/users/user.ex

@@ -40,14 +40,18 @@ defmodule Mobilizon.Users.User do
     :confirmation_token,
     :reset_password_sent_at,
     :reset_password_token,
+    :default_actor_id,
     :locale,
     :unconfirmed_email,
-    :disabled
+    :disabled,
+    :provider
   ]
   @attrs @required_attrs ++ @optional_attrs
 
   @registration_required_attrs @required_attrs ++ [:password]
 
+  @auth_provider_required_attrs @required_attrs ++ [:provider]
+
   @password_change_required_attrs [:password]
   @password_reset_required_attrs @password_change_required_attrs ++
                                    [:reset_password_token, :reset_password_sent_at]
@@ -67,6 +71,7 @@ defmodule Mobilizon.Users.User do
     field(:unconfirmed_email, :string)
     field(:locale, :string, default: "en")
     field(:disabled, :boolean, default: false)
+    field(:provider, :string)
 
     belongs_to(:default_actor, Actor)
     has_many(:actors, Actor)
@@ -116,6 +121,16 @@ defmodule Mobilizon.Users.User do
     )
   end
 
+  @doc false
+  @spec auth_provider_changeset(t, map) :: Ecto.Changeset.t()
+  def auth_provider_changeset(%__MODULE__{} = user, attrs) do
+    user
+    |> changeset(attrs)
+    |> cast_assoc(:default_actor)
+    |> put_change(:confirmed_at, DateTime.utc_now() |> DateTime.truncate(:second))
+    |> validate_required(@auth_provider_required_attrs)
+  end
+
   @doc false
   @spec send_password_reset_changeset(t, map) :: Ecto.Changeset.t()
   def send_password_reset_changeset(%__MODULE__{} = user, attrs) do

lib/mobilizon/users/users.ex

@@ -15,13 +15,6 @@ defmodule Mobilizon.Users do
   alias Mobilizon.Storage.{Page, Repo}
   alias Mobilizon.Users.{Setting, User}
 
-  alias Mobilizon.Web.Auth
-
-  @type tokens :: %{
-          required(:access_token) => String.t(),
-          required(:refresh_token) => String.t()
-        }
-
   defenum(UserRole, :user_role, [:administrator, :moderator, :user])
 
   defenum(NotificationPendingNotificationDelay, none: 0, direct: 1, one_hour: 5, one_day: 10)
@@ -41,6 +34,18 @@ defmodule Mobilizon.Users do
     end
   end
 
+  @spec create_external(String.t(), String.t()) :: {:ok, User.t()} | {:error, Ecto.Changeset.t()}
+  def create_external(email, provider) do
+    with {:ok, %User{} = user} <-
+           %User{}
+           |> User.auth_provider_changeset(%{email: email, provider: provider})
+           |> Repo.insert() do
+      Events.create_feed_token(%{user_id: user.id})
+
+      {:ok, user}
+    end
+  end
+
   @doc """
   Gets a single user.
   Raises `Ecto.NoResultsError` if the user does not exist.
@@ -75,6 +80,16 @@ defmodule Mobilizon.Users do
     end
   end
 
+  @doc """
+  Gets an user by its email.
+  """
+  @spec get_user_by_email!(String.t(), boolean | nil) :: User.t()
+  def get_user_by_email!(email, activated \\ nil) do
+    email
+    |> user_by_email_query(activated)
+    |> Repo.one!()
+  end
+
   @doc """
   Get an user by its activation token.
   """
@@ -267,52 +282,6 @@ defmodule Mobilizon.Users do
   @spec count_users :: integer
   def count_users, do: Repo.one(from(u in User, select: count(u.id)))
 
-  @doc """
-  Authenticate an user.
-  """
-  @spec authenticate(User.t()) :: {:ok, tokens} | {:error, :unauthorized}
-  def authenticate(%{user: %User{password_hash: password_hash} = user, password: password}) do
-    # Does password match the one stored in the database?
-    if Argon2.verify_pass(password, password_hash) do
-      {:ok, _tokens} = generate_tokens(user)
-    else
-      {:error, :unauthorized}
-    end
-  end
-
-  @doc """
-  Generates access token and refresh token for an user.
-  """
-  @spec generate_tokens(User.t()) :: {:ok, tokens}
-  def generate_tokens(user) do
-    with {:ok, access_token} <- generate_access_token(user),
-         {:ok, refresh_token} <- generate_refresh_token(user) do
-      {:ok, %{access_token: access_token, refresh_token: refresh_token}}
-    end
-  end
-
-  @doc """
-  Generates access token for an user.
-  """
-  @spec generate_access_token(User.t()) :: {:ok, String.t()}
-  def generate_access_token(user) do
-    with {:ok, access_token, _claims} <-
-           Auth.Guardian.encode_and_sign(user, %{}, token_type: "access") do
-      {:ok, access_token}
-    end
-  end
-
-  @doc """
-  Generates refresh token for an user.
-  """
-  @spec generate_refresh_token(User.t()) :: {:ok, String.t()}
-  def generate_refresh_token(user) do
-    with {:ok, refresh_token, _claims} <-
-           Auth.Guardian.encode_and_sign(user, %{}, token_type: "refresh") do
-      {:ok, refresh_token}
-    end
-  end
-
   @doc """
   Gets a settings for an user.
 

lib/service/auth/authenticator.ex

@@ -0,0 +1,93 @@
+defmodule Mobilizon.Service.Auth.Authenticator do
+  @moduledoc """
+  Module to handle authentification (currently through database or LDAP)
+  """
+  alias Mobilizon.Users
+  alias Mobilizon.Users.User
+  alias Mobilizon.Web.Auth.Guardian
+
+  @type tokens :: %{
+          required(:access_token) => String.t(),
+          required(:refresh_token) => String.t()
+        }
+
+  @type tokens_with_user :: %{
+          required(:access_token) => String.t(),
+          required(:refresh_token) => String.t(),
+          required(:user) => User.t()
+        }
+
+  def implementation do
+    Mobilizon.Config.get(
+      Mobilizon.Service.Auth.Authenticator,
+      Mobilizon.Service.Auth.MobilizonAuthenticator
+    )
+  end
+
+  @callback login(String.t(), String.t()) :: {:ok, User.t()} | {:error, any()}
+  @spec login(String.t(), String.t()) :: {:ok, User.t()} | {:error, any()}
+  def login(email, password), do: implementation().login(email, password)
+
+  @callback can_change_email?(User.t()) :: boolean
+  def can_change_email?(%User{} = user), do: implementation().can_change_email?(user)
+
+  @callback can_change_password?(User.t()) :: boolean
+  def can_change_password?(%User{} = user), do: implementation().can_change_password?(user)
+
+  @spec has_password?(User.t()) :: boolean()
+  def has_password?(%User{provider: provider}), do: is_nil(provider) or provider == "ldap"
+
+  @spec can_reset_password?(User.t()) :: boolean()
+  def can_reset_password?(%User{} = user), do: has_password?(user) && can_change_password?(user)
+
+  @spec authenticate(String.t(), String.t()) :: {:ok, tokens_with_user()}
+  def authenticate(email, password) do
+    with {:ok, %User{} = user} <- login(email, password),
+         {:ok, %{access_token: access_token, refresh_token: refresh_token}} <-
+           generate_tokens(user) do
+      {:ok, %{access_token: access_token, refresh_token: refresh_token, user: user}}
+    end
+  end
+
+  @doc """
+  Generates access token and refresh token for an user.
+  """
+  @spec generate_tokens(User.t()) :: {:ok, tokens}
+  def generate_tokens(user) do
+    with {:ok, access_token} <- generate_access_token(user),
+         {:ok, refresh_token} <- generate_refresh_token(user) do
+      {:ok, %{access_token: access_token, refresh_token: refresh_token}}
+    end
+  end
+
+  @doc """
+  Generates access token for an user.
+  """
+  @spec generate_access_token(User.t()) :: {:ok, String.t()}
+  def generate_access_token(user) do
+    with {:ok, access_token, _claims} <-
+           Guardian.encode_and_sign(user, %{}, token_type: "access") do
+      {:ok, access_token}
+    end
+  end
+
+  @doc """
+  Generates refresh token for an user.
+  """
+  @spec generate_refresh_token(User.t()) :: {:ok, String.t()}
+  def generate_refresh_token(user) do
+    with {:ok, refresh_token, _claims} <-
+           Guardian.encode_and_sign(user, %{}, token_type: "refresh") do
+      {:ok, refresh_token}
+    end
+  end
+
+  @spec fetch_user(String.t()) :: User.t() | {:error, :user_not_found}
+  def fetch_user(nil), do: {:error, :user_not_found}
+
+  def fetch_user(email) when not is_nil(email) do
+    with {:ok, %User{} = user} <- Users.get_user_by_email(email, true) do
+      user
+    end
+  end
+end

lib/service/auth/ldap_authenticator.ex

@@ -0,0 +1,180 @@
+# Portions of this file are derived from Pleroma:
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Mobilizon.Service.Auth.LDAPAuthenticator do
+  @moduledoc """
+  Authenticate Mobilizon users through LDAP accounts
+  """
+  alias Mobilizon.Service.Auth.{Authenticator, MobilizonAuthenticator}
+  alias Mobilizon.Users
+  alias Mobilizon.Users.User
+
+  require Logger
+
+  import Authenticator,
+    only: [fetch_user: 1]
+
+  @behaviour Authenticator
+  @base MobilizonAuthenticator
+
+  @connection_timeout 10_000
+  @search_timeout 10_000
+
+  def login(email, password) do
+    with {:ldap, true} <- {:ldap, Mobilizon.Config.get([:ldap, :enabled])},
+         %User{} = user <- ldap_user(email, password) do
+      {:ok, user}
+    else
+      {:error, {:ldap_connection_error, _}} ->
+        # When LDAP is unavailable, try default authenticator
+        @base.login(email, password)
+
+      {:ldap, _} ->
+        @base.login(email, password)
+
+      error ->
+        error
+    end
+  end
+
+  def can_change_email?(%User{provider: provider}), do: provider != "ldap"
+
+  def can_change_password?(%User{provider: provider}), do: provider != "ldap"
+
+  defp ldap_user(email, password) do
+    ldap = Mobilizon.Config.get(:ldap, [])
+    host = Keyword.get(ldap, :host, "localhost")
+    port = Keyword.get(ldap, :port, 389)
+    ssl = Keyword.get(ldap, :ssl, false)
+    sslopts = Keyword.get(ldap, :sslopts, [])
+
+    options =
+      [{:port, port}, {:ssl, ssl}, {:timeout, @connection_timeout}] ++
+        if sslopts != [], do: [{:sslopts, sslopts}], else: []
+
+    case :eldap.open([to_charlist(host)], options) do
+      {:ok, connection} ->
+        try do
+          ensure_eventual_tls(connection, ldap)
+
+          base = Keyword.get(ldap, :base)
+          uid_field = Keyword.get(ldap, :uid, "cn")
+
+          # We first need to find the LDAP UID/CN for this specif email
+          with uid when is_binary(uid) <- search_user(connection, ldap, base, uid_field, email),
+               # Then we can verify the user's password
+               :ok <- bind_user(connection, base, uid_field, uid, password) do
+            case fetch_user(email) do
+              %User{} = user ->
+                user
+
+              _ ->
+                register_user(email)
+            end
+          else
+            {:error, error} ->
+              {:error, error}
+
+            error ->
+              {:error, error}
+          end
+        after
+          :eldap.close(connection)
+        end
+
+      {:error, error} ->
+        Logger.error("Could not open LDAP connection: #{inspect(error)}")
+        {:error, {:ldap_connection_error, error}}
+    end
+  end
+
+  @spec bind_user(any(), String.t(), String.t(), String.t(), String.t()) ::
+          User.t() | any()
+  defp bind_user(connection, base, uid, field, password) do
+    bind = "#{uid}=#{field},#{base}"
+    Logger.debug("Binding to LDAP with \"#{bind}\"")
+    :eldap.simple_bind(connection, bind, password)
+  end
+
+  @spec search_user(any(), Keyword.t(), String.t(), String.t(), String.t()) ::
+          String.t() | {:error, :ldap_registration_missing_attributes} | any()
+  defp search_user(connection, ldap, base, uid, email) do
+    # We may need to bind before performing the search
+    res =
+      if Keyword.get(ldap, :require_bind_for_search, true) do
+        admin_field = Keyword.get(ldap, :bind_uid)
+        admin_password = Keyword.get(ldap, :bind_password)
+        bind_user(connection, base, uid, admin_field, admin_password)
+      else
+        :ok
+      end
+
+    if res == :ok do
+      do_search_user(connection, base, uid, email)
+    else
+      res
+    end
+  end
+
+  # Search an user by uid to find their CN
+  @spec do_search_user(any(), String.t(), String.t(), String.t()) ::
+          String.t() | {:error, :ldap_registration_missing_attributes} | any()
+  defp do_search_user(connection, base, uid, email) do
+    with {:ok, {:eldap_search_result, [{:eldap_entry, _, attributes}], _}} <-
+           :eldap.search(connection, [
+             {:base, to_charlist(base)},
+             {:filter, :eldap.equalityMatch(to_charlist("mail"), to_charlist(email))},
+             {:scope, :eldap.wholeSubtree()},
+             {:attributes, [to_charlist(uid)]},
+             {:timeout, @search_timeout}
+           ]),
+         {:uid, {_, [uid]}} <- {:uid, List.keyfind(attributes, to_charlist(uid), 0)} do
+      :erlang.list_to_binary(uid)
+    else
+      {:ok, {:eldap_search_result, [], []}} ->
+        Logger.info("Unable to find user with email #{email}")
+        {:error, :ldap_search_email_not_found}
+
+      {:cn, err} ->
+        Logger.error("Could not find LDAP attribute CN: #{inspect(err)}")
+        {:error, :ldap_searcy_missing_attributes}
+
+      error ->
+        error
+    end
+  end
+
+  @spec register_user(String.t()) :: User.t() | any()
+  defp register_user(email) do
+    case Users.create_external(email, "ldap") do
+      {:ok, %User{} = user} ->
+        user
+
+      error ->
+        error
+    end
+  end
+
+  @spec ensure_eventual_tls(any(), Keyword.t()) :: :ok
+  defp ensure_eventual_tls(connection, ldap) do
+    if Keyword.get(ldap, :tls, false) do
+      :application.ensure_all_started(:ssl)
+
+      case :eldap.start_tls(
+             connection,
+             Keyword.get(ldap, :tlsopts, []),
+             @connection_timeout
+           ) do
+        :ok ->
+          :ok
+
+        error ->
+          Logger.error("Could not start TLS: #{inspect(error)}")
+      end
+    end
+
+    :ok
+  end
+end

lib/service/auth/mobilizon_authenticator.ex

@@ -0,0 +1,39 @@
+defmodule Mobilizon.Service.Auth.MobilizonAuthenticator do
+  @moduledoc """
+  Authenticate Mobilizon users through database accounts
+  """
+  alias Mobilizon.Users.User
+
+  alias Mobilizon.Service.Auth.Authenticator
+
+  import Authenticator,
+    only: [fetch_user: 1]
+
+  @behaviour Authenticator
+
+  def login(email, password) do
+    require Logger
+
+    with {:user, %User{password_hash: password_hash, provider: nil} = user}
+         when not is_nil(password_hash) <-
+           {:user, fetch_user(email)},
+         {:acceptable_password, true} <-
+           {:acceptable_password, not (is_nil(password) || password == "")},
+         {:checkpw, true} <- {:checkpw, Argon2.verify_pass(password, password_hash)} do
+      {:ok, user}
+    else
+      {:user, {:error, :user_not_found}} ->
+        {:error, :user_not_found}
+
+      {:acceptable_password, false} ->
+        {:error, :bad_password}
+
+      {:checkpw, false} ->
+        {:error, :bad_password}
+    end
+  end
+
+  def can_change_email?(%User{provider: provider}), do: is_nil(provider)
+
+  def can_change_password?(%User{provider: provider}), do: is_nil(provider)
+end

lib/web/controllers/auth_controller.ex

@@ -0,0 +1,82 @@
+defmodule Mobilizon.Web.AuthController do
+  use Mobilizon.Web, :controller
+
+  alias Mobilizon.Service.Auth.Authenticator
+  alias Mobilizon.Users
+  alias Mobilizon.Users.User
+  require Logger
+  plug(:put_layout, false)
+
+  plug(Ueberauth)
+
+  def request(conn, %{"provider" => provider} = _params) do
+    redirect(conn, to: "/login?code=Login Provider not found&provider=#{provider}")
+  end
+
+  def callback(
+        %{assigns: %{ueberauth_failure: fails}} = conn,
+        %{"provider" => provider} = _params
+      ) do
+    Logger.warn("Unable to login user with #{provider} #{inspect(fails)}")
+
+    redirect(conn, to: "/login?code=Error with Login Provider&provider=#{provider}")
+  end
+
+  def callback(
+        %{assigns: %{ueberauth_auth: %Ueberauth.Auth{strategy: strategy} = auth}} = conn,
+        _params
+      ) do
+    email = email_from_ueberauth(auth)
+    [_, _, _, strategy] = strategy |> to_string() |> String.split(".")
+    strategy = String.downcase(strategy)
+
+    user =
+      with {:valid_email, false} <- {:valid_email, is_nil(email) or email == ""},
+           {:error, :user_not_found} <- Users.get_user_by_email(email),
+           {:ok, %User{} = user} <- Users.create_external(email, strategy) do
+        user
+      else
+        {:ok, %User{} = user} ->
+          user
+
+        {:error, error} ->
+          {:error, error}
+
+        error ->
+          {:error, error}
+      end
+
+    with %User{} = user <- user,
+         {:ok, %{access_token: access_token, refresh_token: refresh_token}} <-
+           Authenticator.generate_tokens(user) do
+      Logger.info("Logged-in user \"#{email}\" through #{strategy}")
+
+      render(conn, "callback.html", %{
+        access_token: access_token,
+        refresh_token: refresh_token,
+        user: user
+      })
+    else
+      err ->
+        Logger.warn("Unable to login user \"#{email}\" #{inspect(err)}")
+        redirect(conn, to: "/login?code=Error with Login Provider&provider=#{strategy}")
+    end
+  end
+
+  # Github only give public emails as part of the user profile,
+  # so we explicitely request all user emails and filter on the primary one
+  defp email_from_ueberauth(%Ueberauth.Auth{
+         strategy: Ueberauth.Strategy.Github,
+         extra: %Ueberauth.Auth.Extra{raw_info: %{user: %{"emails" => emails}}}
+       })
+       when length(emails) > 0,
+       do: emails |> Enum.find(& &1["primary"]) |> (& &1["email"]).()
+
+  defp email_from_ueberauth(%Ueberauth.Auth{
+         extra: %Ueberauth.Auth.Extra{raw_info: %{user: %{"email" => email}}}
+       })
+       when not is_nil(email) and email != "",
+       do: email
+
+  defp email_from_ueberauth(_), do: nil
+end

lib/web/router.ex

@@ -150,6 +150,10 @@ defmodule Mobilizon.Web.Router do
     get("/groups/me", PageController, :index, as: "my_groups")
 
     get("/interact", PageController, :interact)
+
+    get("/auth/:provider", AuthController, :request)
+    get("/auth/:provider/callback", AuthController, :callback)
+    post("/auth/:provider/callback", AuthController, :callback)
   end
 
   scope "/proxy/", Mobilizon.Web do

lib/web/views/auth_view.ex

@@ -0,0 +1,29 @@
+defmodule Mobilizon.Web.AuthView do
+  @moduledoc """
+  View for the auth routes
+  """
+
+  use Mobilizon.Web, :view
+  alias Mobilizon.Service.Metadata.Instance
+  alias Phoenix.HTML.Tag
+  import Mobilizon.Web.Views.Utils
+
+  def render("callback.html", %{
+        conn: conn,
+        access_token: access_token,
+        refresh_token: refresh_token,
+        user: %{id: user_id, email: user_email, role: user_role, default_actor_id: user_actor_id}
+      }) do
+    info_tags = [
+      Tag.tag(:meta, name: "auth-access-token", content: access_token),
+      Tag.tag(:meta, name: "auth-refresh-token", content: refresh_token),
+      Tag.tag(:meta, name: "auth-user-id", content: user_id),
+      Tag.tag(:meta, name: "auth-user-email", content: user_email),
+      Tag.tag(:meta, name: "auth-user-role", content: user_role),
+      Tag.tag(:meta, name: "auth-user-actor-id", content: user_actor_id)
+    ]
+
+    tags = Instance.build_tags() ++ info_tags
+    inject_tags(tags, get_locale(conn))
+  end
+end

mix.exs

@@ -46,6 +46,23 @@ defmodule Mobilizon.Mixfile do
   defp elixirc_paths(:dev), do: ["lib", "test/support/factory.ex"]
   defp elixirc_paths(_), do: ["lib"]
 
+  # Specifies OAuth dependencies.
+  defp oauth_deps do
+    oauth_strategy_packages =
+      System.get_env("OAUTH_CONSUMER_STRATEGIES")
+      |> to_string()
+      |> String.split()
+      |> Enum.map(fn strategy_entry ->
+        with [_strategy, dependency] <- String.split(strategy_entry, ":") do
+          dependency
+        else
+          [strategy] -> "ueberauth_#{strategy}"
+        end
+      end)
+
+    for s <- oauth_strategy_packages, do: {String.to_atom(s), ">= 0.0.0"}
+  end
+
   # Specifies your project dependencies.
   #
   # Type `mix help deps` for examples and options.
@@ -104,6 +121,16 @@ defmodule Mobilizon.Mixfile do
       {:floki, "~> 0.26.0"},
       {:ip_reserved, "~> 0.1.0"},
       {:fast_sanitize, "~> 0.1"},
+      {:ueberauth, "~> 0.6"},
+      {:ueberauth_twitter, "~> 0.3"},
+      {:ueberauth_github, "~> 0.7"},
+      {:ueberauth_facebook, "~> 0.8"},
+      {:ueberauth_discord, "~> 0.5"},
+      {:ueberauth_google, "~> 0.9"},
+      {:ueberauth_keycloak_strategy,
+       git: "https://github.com/tcitworld/ueberauth_keycloak.git", branch: "upgrade-deps"},
+      {:ueberauth_gitlab_strategy,
+       git: "https://github.com/tcitworld/ueberauth_gitlab.git", branch: "upgrade-deps"},
       # Dev and test dependencies
       {:phoenix_live_reload, "~> 1.2", only: [:dev, :e2e]},
       {:ex_machina, "~> 2.3", only: [:dev, :test]},
@@ -116,7 +143,7 @@ defmodule Mobilizon.Mixfile do
       {:credo, "~> 1.4.0", only: [:dev, :test], runtime: false},
       {:mock, "~> 0.3.4", only: :test},
       {:elixir_feed_parser, "~> 2.1.0", only: :test}
-    ]
+    ] ++ oauth_deps()
   end
 
   # Aliases are shortcuts or tasks specific to the current project.

mix.lock

@@ -31,12 +31,13 @@
   "elixir_feed_parser": {:hex, :elixir_feed_parser, "2.1.0", "bb96fb6422158dc7ad59de62ef211cc69d264acbbe63941a64a5dce97bbbc2e6", [:mix], [{:timex, "~> 3.4", [hex: :timex, repo: "hexpm", optional: false]}], "hexpm", "2d3c62fe7b396ee3b73d7160bc8fadbd78bfe9597c98c7d79b3f1038d9cba28f"},
   "elixir_make": {:hex, :elixir_make, "0.6.0", "38349f3e29aff4864352084fc736fa7fa0f2995a819a737554f7ebd28b85aaab", [:mix], [], "hexpm", "d522695b93b7f0b4c0fcb2dfe73a6b905b1c301226a5a55cb42e5b14d509e050"},
   "erlex": {:hex, :erlex, "0.2.6", "c7987d15e899c7a2f34f5420d2a2ea0d659682c06ac607572df55a43753aa12e", [:mix], [], "hexpm", "2ed2e25711feb44d52b17d2780eabf998452f6efda104877a3881c2f8c0c0c75"},
+  "esaml": {:git, "git://github.com/wrren/esaml.git", "2cace5778e4323216bcff2085ca9739e42a68a42", [branch: "ueberauth_saml"]},
   "eternal": {:hex, :eternal, "1.2.1", "d5b6b2499ba876c57be2581b5b999ee9bdf861c647401066d3eeed111d096bc4", [:mix], [], "hexpm", "b14f1dc204321429479c569cfbe8fb287541184ed040956c8862cb7a677b8406"},
   "ex_cldr": {:hex, :ex_cldr, "2.16.1", "905b03c38b5fb51668a347f2e6b586bcb2c0816cd98f7d913104872c43cbc61f", [:mix], [{:castore, "~> 0.1", [hex: :castore, repo: "hexpm", optional: true]}, {:certifi, "~> 2.5", [hex: :certifi, repo: "hexpm", optional: true]}, {:cldr_utils, "~> 2.9", [hex: :cldr_utils, repo: "hexpm", optional: false]}, {:decimal, "~> 1.6", [hex: :decimal, repo: "hexpm", optional: false]}, {:gettext, "~> 0.13", [hex: :gettext, repo: "hexpm", optional: true]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: true]}, {:plug, "~> 1.9", [hex: :plug, repo: "hexpm", optional: true]}, {:telemetry, "~> 0.4.0", [hex: :telemetry, repo: "hexpm", optional: true]}], "hexpm", "006e500769982e57e6f3e32cbc4664345f78b014bb5ff48ddc394d67c86c1a8d"},
   "ex_cldr_calendars": {:hex, :ex_cldr_calendars, "1.9.0", "ace1c57ba3850753c9ac6ddb89dc0c9a9e5e1c57ecad587e21c8925ad30a3838", [:mix], [{:calendar_interval, "~> 0.2", [hex: :calendar_interval, repo: "hexpm", optional: true]}, {:earmark, "~> 1.0", [hex: :earmark, repo: "hexpm", optional: false]}, {:ex_cldr_numbers, "~> 2.13", [hex: :ex_cldr_numbers, repo: "hexpm", optional: false]}, {:ex_cldr_units, "~> 3.0", [hex: :ex_cldr_units, repo: "hexpm", optional: true]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm", "a4b07773e2a326474f44a6bc51fffbec634859a1bad5cc6e6eb55eba45115541"},
   "ex_cldr_currencies": {:hex, :ex_cldr_currencies, "2.5.0", "e369ae3c1cd5cd20aa20988b153fd2902b4ab08aec63ca8757d7104bdb79f867", [:mix], [{:ex_cldr, "~> 2.14", [hex: :ex_cldr, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: true]}], "hexpm", "ba16b1df60bcec52c986481bbdfa7cfaec899b610f869d2b3c5a9a8149f67668"},
   "ex_cldr_dates_times": {:hex, :ex_cldr_dates_times, "2.5.1", "9439d1c40cfd03c3d8f3f60f5d3e3f2c6eaf0fd714541d687531cce78cfb9909", [:mix], [{:calendar_interval, "~> 0.2", [hex: :calendar_interval, repo: "hexpm", optional: true]}, {:ex_cldr_calendars, "~> 1.8", [hex: :ex_cldr_calendars, repo: "hexpm", optional: false]}, {:ex_cldr_numbers, "~> 2.15", [hex: :ex_cldr_numbers, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: true]}], "hexpm", "62a2f8d41ec6e789137bbf3ac7c944885a8ef6b7ce475905d056d1805b482427"},
-  "ex_cldr_numbers": {:hex, :ex_cldr_numbers, "2.15.0", "207843c6ddae802a2b5fd43eb95c4b65eae8a0a876ce23ae4413eb098b222977", [:mix], [{:decimal, "~> 1.6 or ~> 2.0", [hex: :decimal, repo: "hexpm", optional: false]}, {:ex_cldr, "~> 2.15", [hex: :ex_cldr, repo: "hexpm", optional: false]}, {:ex_cldr_currencies, "~> 2.5", [hex: :ex_cldr_currencies, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: true]}], "hexpm", "3c6c220e03590f08e2f3cb4f3e0c2e1a78fe56a12229331edb952cbdc67935e1"},
+  "ex_cldr_numbers": {:hex, :ex_cldr_numbers, "2.15.1", "dced7ffee69c4830593258b69b294adb4c65cf539e1d8ae0a4de31cfc8aa56a0", [:mix], [{:decimal, "~> 1.6 or ~> 2.0", [hex: :decimal, repo: "hexpm", optional: false]}, {:ex_cldr, "~> 2.15", [hex: :ex_cldr, repo: "hexpm", optional: false]}, {:ex_cldr_currencies, "~> 2.5", [hex: :ex_cldr_currencies, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: true]}], "hexpm", "c6a4b69ef80b8ffbb6c8fb69a2b365ba542580e0f76a15d8c6ee9142bd1b97ea"},
   "ex_crypto": {:hex, :ex_crypto, "0.10.0", "af600a89b784b36613a989da6e998c1b200ff1214c3cfbaf8deca4aa2f0a1739", [:mix], [{:poison, ">= 2.0.0", [hex: :poison, repo: "hexpm", optional: false]}], "hexpm", "ccc7472cfe8a0f4565f97dce7e9280119bf15a5ea51c6535e5b65f00660cde1c"},
   "ex_doc": {:hex, :ex_doc, "0.22.1", "9bb6d51508778193a4ea90fa16eac47f8b67934f33f8271d5e1edec2dc0eee4c", [:mix], [{:earmark, "~> 1.4.0", [hex: :earmark, repo: "hexpm", optional: false]}, {:makeup_elixir, "~> 0.14", [hex: :makeup_elixir, repo: "hexpm", optional: false]}], "hexpm", "d957de1b75cb9f78d3ee17820733dc4460114d8b1e11f7ee4fd6546e69b1db60"},
   "ex_ical": {:hex, :ex_ical, "0.2.0", "4b928b554614704016cc0c9ee226eb854da9327a1cc460457621ceacb1ac29a6", [:mix], [{:timex, "~> 3.1", [hex: :timex, repo: "hexpm", optional: false]}], "hexpm", "db76473b2ae0259e6633c6c479a5a4d8603f09497f55c88f9ef4d53d2b75befb"},
@@ -91,7 +92,10 @@
   "mock": {:hex, :mock, "0.3.5", "feb81f52b8dcf0a0d65001d2fec459f6b6a8c22562d94a965862f6cc066b5431", [:mix], [{:meck, "~> 0.8.13", [hex: :meck, repo: "hexpm", optional: false]}], "hexpm", "6fae404799408300f863550392635d8f7e3da6b71abdd5c393faf41b131c8728"},
   "mogrify": {:hex, :mogrify, "0.7.4", "9b2496dde44b1ce12676f85d7dc531900939e6367bc537c7243a1b089435b32d", [:mix], [], "hexpm", "50d79e337fba6bc95bfbef918058c90f50b17eed9537771e61d4619488f099c3"},
   "nimble_parsec": {:hex, :nimble_parsec, "0.6.0", "32111b3bf39137144abd7ba1cce0914533b2d16ef35e8abc5ec8be6122944263", [:mix], [], "hexpm", "27eac315a94909d4dc68bc07a4a83e06c8379237c5ea528a9acff4ca1c873c52"},
+  "oauth2": {:hex, :oauth2, "2.0.0", "338382079fe16c514420fa218b0903f8ad2d4bfc0ad0c9f988867dfa246731b0", [:mix], [{:hackney, "~> 1.13", [hex: :hackney, repo: "hexpm", optional: false]}], "hexpm", "881b8364ac7385f9fddc7949379cbe3f7081da37233a1aa7aab844670a91e7e7"},
+  "oauther": {:hex, :oauther, "1.1.1", "7d8b16167bb587ecbcddd3f8792beb9ec3e7b65c1f8ebd86b8dd25318d535752", [:mix], [], "hexpm", "9374f4302045321874cccdc57eb975893643bd69c3b22bf1312dab5f06e5788e"},
   "oban": {:hex, :oban, "1.2.0", "7cca94d341be43d220571e28f69131c4afc21095b25257397f50973d3fc59b07", [:mix], [{:ecto_sql, "~> 3.1", [hex: :ecto_sql, repo: "hexpm", optional: false]}, {:jason, "~> 1.1", [hex: :jason, repo: "hexpm", optional: false]}, {:postgrex, "~> 0.14", [hex: :postgrex, repo: "hexpm", optional: false]}, {:telemetry, "~> 0.4", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "ba5f8b3f7d76967b3e23cf8014f6a13e4ccb33431e4808f036709a7f822362ee"},
+  "paddle": {:hex, :paddle, "0.1.4", "3697996d79e3d771d6f7560a23e4bad1ed7b7f7fd3e784f97bc39565963b2b13", [:mix], [], "hexpm", "fc719a9e7c86f319b9f4bf413d6f0f326b0c4930d5bc6630d074598ed38e2143"},
   "parse_trans": {:hex, :parse_trans, "3.3.0", "09765507a3c7590a784615cfd421d101aec25098d50b89d7aa1d66646bc571c1", [:rebar3], [], "hexpm", "17ef63abde837ad30680ea7f857dd9e7ced9476cdd7b0394432af4bfc241b960"},
   "phoenix": {:hex, :phoenix, "1.5.3", "bfe0404e48ea03dfe17f141eff34e1e058a23f15f109885bbdcf62be303b49ff", [:mix], [{:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: true]}, {:phoenix_html, "~> 2.13", [hex: :phoenix_html, repo: "hexpm", optional: true]}, {:phoenix_pubsub, "~> 2.0", [hex: :phoenix_pubsub, repo: "hexpm", optional: false]}, {:plug, "~> 1.10", [hex: :plug, repo: "hexpm", optional: false]}, {:plug_cowboy, "~> 1.0 or ~> 2.2", [hex: :plug_cowboy, repo: "hexpm", optional: true]}, {:plug_crypto, "~> 1.1.2 or ~> 1.2", [hex: :plug_crypto, repo: "hexpm", optional: false]}, {:telemetry, "~> 0.4", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "8e16febeb9640d8b33895a691a56481464b82836d338bb3a23125cd7b6157c25"},
   "phoenix_ecto": {:hex, :phoenix_ecto, "4.1.0", "a044d0756d0464c5a541b4a0bf4bcaf89bffcaf92468862408290682c73ae50d", [:mix], [{:ecto, "~> 3.0", [hex: :ecto, repo: "hexpm", optional: false]}, {:phoenix_html, "~> 2.9", [hex: :phoenix_html, repo: "hexpm", optional: true]}, {:plug, "~> 1.0", [hex: :plug, repo: "hexpm", optional: false]}], "hexpm", "c5e666a341ff104d0399d8f0e4ff094559b2fde13a5985d4cb5023b2c2ac558b"},
@@ -110,10 +114,21 @@
   "sleeplocks": {:hex, :sleeplocks, "1.1.1", "3d462a0639a6ef36cc75d6038b7393ae537ab394641beb59830a1b8271faeed3", [:rebar3], [], "hexpm", "84ee37aeff4d0d92b290fff986d6a95ac5eedf9b383fadfd1d88e9b84a1c02e1"},
   "slugger": {:hex, :slugger, "0.3.0", "efc667ab99eee19a48913ccf3d038b1fb9f165fa4fbf093be898b8099e61b6ed", [:mix], [], "hexpm", "20d0ded0e712605d1eae6c5b4889581c3460d92623a930ddda91e0e609b5afba"},
   "ssl_verify_fun": {:hex, :ssl_verify_fun, "1.1.6", "cf344f5692c82d2cd7554f5ec8fd961548d4fd09e7d22f5b62482e5aeaebd4b0", [:make, :mix, :rebar3], [], "hexpm", "bdb0d2471f453c88ff3908e7686f86f9be327d065cc1ec16fa4540197ea04680"},
-  "telemetry": {:hex, :telemetry, "0.4.1", "ae2718484892448a24470e6aa341bc847c3277bfb8d4e9289f7474d752c09c7f", [:rebar3], [], "hexpm", "4738382e36a0a9a2b6e25d67c960e40e1a2c95560b9f936d8e29de8cd858480f"},
+  "telemetry": {:hex, :telemetry, "0.4.2", "2808c992455e08d6177322f14d3bdb6b625fbcfd233a73505870d8738a2f4599", [:rebar3], [], "hexpm", "2d1419bd9dda6a206d7b5852179511722e2b18812310d304620c7bd92a13fcef"},
   "timex": {:hex, :timex, "3.6.2", "845cdeb6119e2fef10751c0b247b6c59d86d78554c83f78db612e3290f819bc2", [:mix], [{:combine, "~> 0.10", [hex: :combine, repo: "hexpm", optional: false]}, {:gettext, "~> 0.10", [hex: :gettext, repo: "hexpm", optional: false]}, {:tzdata, "~> 0.1.8 or ~> 0.5 or ~> 1.0.0", [hex: :tzdata, repo: "hexpm", optional: false]}], "hexpm", "26030b46199d02a590be61c2394b37ea25a3664c02fafbeca0b24c972025d47a"},
   "tzdata": {:hex, :tzdata, "1.0.3", "73470ad29dde46e350c60a66e6b360d3b99d2d18b74c4c349dbebbc27a09a3eb", [:mix], [{:hackney, "~> 1.0", [hex: :hackney, repo: "hexpm", optional: false]}], "hexpm", "a6e1ee7003c4d04ecbd21dd3ec690d4c6662db5d3bbdd7262d53cdf5e7c746c1"},
+  "ueberauth": {:hex, :ueberauth, "0.6.3", "d42ace28b870e8072cf30e32e385579c57b9cc96ec74fa1f30f30da9c14f3cc0", [:mix], [{:plug, "~> 1.5", [hex: :plug, repo: "hexpm", optional: false]}], "hexpm", "afc293d8a1140d6591b53e3eaf415ca92842cb1d32fad3c450c6f045f7f91b60"},
+  "ueberauth_discord": {:hex, :ueberauth_discord, "0.5.0", "52421277b93fda769b51636e542b5085f3861efdc7fa48ac4bedb6dae0b645e1", [:mix], [{:oauth2, "~> 1.0 or ~> 2.0", [hex: :oauth2, repo: "hexpm", optional: false]}, {:ueberauth, "~> 0.6.3", [hex: :ueberauth, repo: "hexpm", optional: false]}], "hexpm", "9a3808baf44297e26bd5042ba9ea5398aa60023e054eb9a5ac8a4eacd0467a78"},
+  "ueberauth_facebook": {:hex, :ueberauth_facebook, "0.8.1", "c254be4ab367c276773c2e41d3c0fe343ae118e244afc8d5a4e3e5c438951fdc", [:mix], [{:oauth2, "~> 1.0 or ~> 2.0", [hex: :oauth2, repo: "hexpm", optional: false]}, {:ueberauth, "~> 0.6.0", [hex: :ueberauth, repo: "hexpm", optional: false]}], "hexpm", "c2cf210ef45bd20611234ef17517f9d1dff6b31d3fb6ad96789143eb0943f540"},
+  "ueberauth_github": {:hex, :ueberauth_github, "0.8.0", "2216c8cdacee0de6245b422fb397921b64a29416526985304e345dab6a799d17", [:mix], [{:oauth2, "~> 1.0 or ~> 2.0", [hex: :oauth2, repo: "hexpm", optional: false]}, {:ueberauth, "~> 0.6.0", [hex: :ueberauth, repo: "hexpm", optional: false]}], "hexpm", "b65ccc001a7b0719ba069452f3333d68891f4613ae787a340cce31e2a43307a3"},
+  "ueberauth_gitlab_strategy": {:git, "https://github.com/tcitworld/ueberauth_gitlab.git", "9fc5d30b5d87ff7cdef293a1c128f25777dcbe59", [branch: "upgrade-deps"]},
+  "ueberauth_google": {:hex, :ueberauth_google, "0.9.0", "e098e1d6df647696b858b0289eae7e4dc8c662abee9e309d64bc115192c51bf5", [:mix], [{:oauth2, "~> 1.0 or ~> 2.0", [hex: :oauth2, repo: "hexpm", optional: false]}, {:ueberauth, "~> 0.6.0", [hex: :ueberauth, repo: "hexpm", optional: false]}], "hexpm", "5453ba074df7ee14fb5b121bb04a64cda5266cd23b28af8a2fdf02dd40959ab4"},
+  "ueberauth_keycloak": {:git, "https://github.com/tcitworld/ueberauth_keycloak.git", "02447d8a75bd36ba26c17c7b1b8bab3538bb2e7a", [branch: "upgrade-deps"]},
+  "ueberauth_keycloak_strategy": {:git, "https://github.com/tcitworld/ueberauth_keycloak.git", "d892f0f9daf9e0023319b69ac2f7c2c6edff2b14", [branch: "upgrade-deps"]},
+  "ueberauth_saml": {:git, "https://github.com/wrren/ueberauth_saml.git", "dfcb4ae3f509afec0f442ce455c41feacac24511", []},
+  "ueberauth_twitter": {:hex, :ueberauth_twitter, "0.4.0", "4b98620341bc91bac90459093bba093c650823b6e2df35b70255c493c17e9227", [:mix], [{:httpoison, "~> 1.0", [hex: :httpoison, repo: "hexpm", optional: false]}, {:oauther, "~> 1.1", [hex: :oauther, repo: "hexpm", optional: false]}, {:ueberauth, "~> 0.6", [hex: :ueberauth, repo: "hexpm", optional: false]}], "hexpm", "fb29c9047ca263038c0c61f5a0ec8597e8564aba3f2b4cb02704b60205fd4468"},
   "unicode_util_compat": {:hex, :unicode_util_compat, "0.5.0", "8516502659002cec19e244ebd90d312183064be95025a319a6c7e89f4bccd65b", [:rebar3], [], "hexpm", "d48d002e15f5cc105a696cf2f1bbb3fc72b4b770a184d8420c8db20da2674b38"},
   "unsafe": {:hex, :unsafe, "1.0.1", "a27e1874f72ee49312e0a9ec2e0b27924214a05e3ddac90e91727bc76f8613d8", [:mix], [], "hexpm", "6c7729a2d214806450d29766abc2afaa7a2cbecf415be64f36a6691afebb50e5"},
+  "uuid": {:git, "git://github.com/botsunit/erlang-uuid", "1effbbbd200f9f5d9d5154e81b83fe8e4c3fe714", [branch: "master"]},
   "xml_builder": {:hex, :xml_builder, "2.0.0", "371ed27bb63bf0598dbaf3f0c466e5dc7d16cb4ecb68f06a67f953654062e21b", [:mix], [], "hexpm", "baeb5c8d42204bac2b856ffd50e8cda42d63b622984538d18d92733e4e790fbd"},
 }

priv/gettext/en/LC_MESSAGES/default.po

@@ -1177,12 +1177,12 @@ msgstr "If you didn't request this, please ignore this email."
 #, elixir-format, fuzzy
 #: lib/web/templates/email/email.text.eex:10
 msgid "In the meantime, please consider this the software as not (yet) finished. Read more on the Framasoft blog:"
-msgstr "In the meantime, please consider that the software is not (yet) finished. More information %{a_start}on our blog%{a_end}."
+msgstr "In the meantime, please consider that the software is not (yet) finished. More information on our blog."
 
 #, elixir-format, fuzzy
 #: lib/web/templates/email/email.text.eex:9
 msgid "Mobilizon is still under development, we will add new features along the updates, until the release of version 1 of the software in the fall of 2020."
-msgstr "Mobilizon is under development, we will add new features to this site during regular updates, until the release of %{b_start}version 1 of the software in the first half of 2020%{b_end}."
+msgstr "Mobilizon is under development, we will add new features to this site during regular updates, until the release of version 1 of the software in the first half of 2020."
 
 #, elixir-format, fuzzy
 #: lib/web/templates/email/email.text.eex:7

priv/repo/migrations/20200630123819_add_provider_to_user_and_make_password_mandatory.exs

@@ -0,0 +1,17 @@
+defmodule Mobilizon.Storage.Repo.Migrations.AddProviderToUserAndMakePasswordMandatory do
+  use Ecto.Migration
+
+  def up do
+    alter table(:users) do
+      add(:provider, :string, null: true)
+      modify(:password_hash, :string, null: true)
+    end
+  end
+
+  def down do
+    alter table(:users) do
+      remove(:provider)
+      modify(:password_hash, :string, null: false)
+    end
+  end
+end

test/graphql/resolvers/participant_test.exs

@@ -991,7 +991,7 @@ defmodule Mobilizon.GraphQL.Resolvers.ParticipantTest do
           }
     """
 
-    clear_config([:anonymous, :participation])
+    setup do: clear_config([:anonymous, :participation])
 
     setup %{conn: conn, actor: actor, user: user} do
       Mobilizon.Config.clear_config_cache()

test/graphql/resolvers/report_test.exs

@@ -33,7 +33,7 @@ defmodule Mobilizon.GraphQL.Resolvers.ReportTest do
       }
     """
 
-    clear_config([:anonymous, :reports])
+    setup do: clear_config([:anonymous, :reports])
 
     setup %{conn: conn} do
       Mobilizon.Config.clear_config_cache()

test/graphql/resolvers/user_test.exs

@@ -9,6 +9,7 @@ defmodule Mobilizon.GraphQL.Resolvers.UserTest do
   alias Mobilizon.Actors.Actor
   alias Mobilizon.Conversations.Comment
   alias Mobilizon.Events.{Event, Participant}
+  alias Mobilizon.Service.Auth.Authenticator
   alias Mobilizon.Users.User
 
   alias Mobilizon.GraphQL.AbsintheHelpers
@@ -45,8 +46,14 @@ defmodule Mobilizon.GraphQL.Resolvers.UserTest do
         }
   """
 
+  @send_reset_password_mutation """
+    mutation SendResetPassword($email: String!) {
+      sendResetPassword(email: $email)
+    }
+  """
+
   @delete_user_account_mutation """
-    mutation DeleteAccount($password: String!) {
+    mutation DeleteAccount($password: String) {
       deleteAccount (password: $password) {
         id
       }
@@ -712,45 +719,50 @@ defmodule Mobilizon.GraphQL.Resolvers.UserTest do
   end
 
   describe "Resolver: Send reset password" do
-    test "test send_reset_password/3 with valid email", context do
+    test "test send_reset_password/3 with valid email", %{conn: conn} do
-      user = insert(:user)
+      %User{email: email} = insert(:user)
-
-      mutation = """
-          mutation {
-            sendResetPassword(
-                  email: "#{user.email}"
-              )
-            }
-      """
 
       res =
-        context.conn
+        conn
-        |> post("/api", AbsintheHelpers.mutation_skeleton(mutation))
+        |> AbsintheHelpers.graphql_query(
+          query: @send_reset_password_mutation,
+          variables: %{email: email}
+        )
 
-      assert json_response(res, 200)["data"]["sendResetPassword"] == user.email
+      assert res["data"]["sendResetPassword"] == email
     end
 
-    test "test send_reset_password/3 with invalid email", context do
+    test "test send_reset_password/3 with invalid email", %{conn: conn} do
-      mutation = """
+      res =
-          mutation {
+        conn
-            sendResetPassword(
+        |> AbsintheHelpers.graphql_query(
-                  email: "oh no"
+          query: @send_reset_password_mutation,
+          variables: %{email: "not an email"}
         )
-            }
+
-      """
+      assert hd(res["errors"])["message"] ==
+               "No user with this email was found"
+    end
+
+    test "test send_reset_password/3 for an LDAP user", %{conn: conn} do
+      {:ok, %User{email: email}} = Users.create_external("some@users.com", "ldap")
 
       res =
-        context.conn
+        conn
-        |> post("/api", AbsintheHelpers.mutation_skeleton(mutation))
+        |> AbsintheHelpers.graphql_query(
+          query: @send_reset_password_mutation,
+          variables: %{email: email}
+        )
 
-      assert hd(json_response(res, 200)["errors"])["message"] ==
+      assert hd(res["errors"])["message"] ==
-               "No user with this email was found"
+               "This user can't reset their password"
     end
   end
 
   describe "Resolver: Reset user's password" do
     test "test reset_password/3 with valid email", context do
       {:ok, %User{} = user} = Users.register(%{email: "toto@tata.tld", password: "p4ssw0rd"})
+      Users.update_user(user, %{confirmed_at: DateTime.utc_now()})
       %Actor{} = insert(:actor, user: user)
       {:ok, _email_sent} = Email.User.send_password_reset_email(user)
       %User{reset_password_token: reset_password_token} = Users.get_user!(user.id)
@@ -772,6 +784,7 @@ defmodule Mobilizon.GraphQL.Resolvers.UserTest do
         context.conn
         |> post("/api", AbsintheHelpers.mutation_skeleton(mutation))
 
+      assert is_nil(json_response(res, 200)["errors"])
       assert json_response(res, 200)["data"]["resetPassword"]["user"]["id"] == to_string(user.id)
     end
 
@@ -829,7 +842,7 @@ defmodule Mobilizon.GraphQL.Resolvers.UserTest do
   end
 
   describe "Resolver: Login a user" do
-    test "test login_user/3 with valid credentials", context do
+    test "test login_user/3 with valid credentials", %{conn: conn} do
       {:ok, %User{} = user} = Users.register(%{email: "toto@tata.tld", password: "p4ssw0rd"})
 
       {:ok, %User{} = _user} =
@@ -839,30 +852,18 @@ defmodule Mobilizon.GraphQL.Resolvers.UserTest do
           "confirmation_token" => nil
         })
 
-      mutation = """
-          mutation {
-            login(
-                  email: "#{user.email}",
-                  password: "#{user.password}",
-              ) {
-                accessToken,
-                refreshToken,
-                user {
-                  id
-                }
-              }
-            }
-      """
-
       res =
-        context.conn
+        conn
-        |> post("/api", AbsintheHelpers.mutation_skeleton(mutation))
+        |> AbsintheHelpers.graphql_query(
+          query: @login_mutation,
+          variables: %{email: user.email, password: user.password}
+        )
 
-      assert login = json_response(res, 200)["data"]["login"]
+      assert login = res["data"]["login"]
       assert Map.has_key?(login, "accessToken") && not is_nil(login["accessToken"])
     end
 
-    test "test login_user/3 with invalid password", context do
+    test "test login_user/3 with invalid password", %{conn: conn} do
       {:ok, %User{} = user} = Users.register(%{email: "toto@tata.tld", password: "p4ssw0rd"})
 
       {:ok, %User{} = _user} =
@@ -872,79 +873,40 @@ defmodule Mobilizon.GraphQL.Resolvers.UserTest do
           "confirmation_token" => nil
         })
 
-      mutation = """
-          mutation {
-            login(
-                  email: "#{user.email}",
-                  password: "bad password",
-              ) {
-                accessToken,
-                user {
-                  default_actor {
-                    preferred_username,
-                  }
-                }
-              }
-            }
-      """
-
       res =
-        context.conn
+        conn
-        |> post("/api", AbsintheHelpers.mutation_skeleton(mutation))
+        |> AbsintheHelpers.graphql_query(
+          query: @login_mutation,
+          variables: %{email: user.email, password: "bad password"}
+        )
 
-      assert hd(json_response(res, 200)["errors"])["message"] ==
+      assert hd(res["errors"])["message"] ==
                "Impossible to authenticate, either your email or password are invalid."
     end
 
-    test "test login_user/3 with invalid email", context do
+    test "test login_user/3 with invalid email", %{conn: conn} do
-      mutation = """
-          mutation {
-            login(
-                  email: "bad email",
-                  password: "bad password",
-              ) {
-                accessToken,
-                user {
-                  default_actor {
-                    preferred_username,
-                  }
-                }
-              }
-            }
-      """
-
       res =
-        context.conn
+        conn
-        |> post("/api", AbsintheHelpers.mutation_skeleton(mutation))
+        |> AbsintheHelpers.graphql_query(
+          query: @login_mutation,
+          variables: %{email: "bad email", password: "bad password"}
+        )
 
-      assert hd(json_response(res, 200)["errors"])["message"] ==
+      assert hd(res["errors"])["message"] ==
                "No user with this email was found"
     end
 
-    test "test login_user/3 with unconfirmed user", context do
+    test "test login_user/3 with unconfirmed user", %{conn: conn} do
       {:ok, %User{} = user} = Users.register(%{email: "toto@tata.tld", password: "p4ssw0rd"})
 
-      mutation = """
-          mutation {
-            login(
-                  email: "#{user.email}",
-                  password: "#{user.password}",
-              ) {
-                accessToken,
-                user {
-                  default_actor {
-                    preferred_username,
-                  }
-                }
-              }
-            }
-      """
-
       res =
-        context.conn
+        conn
-        |> post("/api", AbsintheHelpers.mutation_skeleton(mutation))
+        |> AbsintheHelpers.graphql_query(
+          query: @login_mutation,
+          variables: %{email: user.email, password: user.password}
+        )
 
-      assert hd(json_response(res, 200)["errors"])["message"] == "User account not confirmed"
+      assert hd(res["errors"])["message"] == "No user with this email was found"
     end
   end
 
@@ -970,7 +932,7 @@ defmodule Mobilizon.GraphQL.Resolvers.UserTest do
 
     test "test refresh_token/3 with an appropriate token", context do
       user = insert(:user)
-      {:ok, refresh_token} = Users.generate_refresh_token(user)
+      {:ok, refresh_token} = Authenticator.generate_refresh_token(user)
 
       mutation = """
           mutation {
@@ -1441,6 +1403,18 @@ defmodule Mobilizon.GraphQL.Resolvers.UserTest do
       assert is_nil(Events.get_participant(participant_id))
     end
 
+    test "delete_account/3 with 3rd-party auth login", %{conn: conn} do
+      {:ok, %User{} = user} = Users.create_external(@email, "keycloak")
+
+      res =
+        conn
+        |> auth_conn(user)
+        |> AbsintheHelpers.graphql_query(query: @delete_user_account_mutation)
+
+      assert is_nil(res["errors"])
+      assert res["data"]["deleteAccount"]["id"] == to_string(user.id)
+    end
+
     test "delete_account/3 with invalid password", %{conn: conn} do
       {:ok, %User{} = user} = Users.register(%{email: @email, password: @password})
 

test/mobilizon/users/users_test.exs

@@ -72,14 +72,6 @@ defmodule Mobilizon.UsersTest do
 
     @email "email@domain.tld"
     @password "password"
-    test "authenticate/1 checks the user's password" do
-      {:ok, %User{} = user} = Users.register(%{email: @email, password: @password})
-
-      assert {:ok, _} = Users.authenticate(%{user: user, password: @password})
-
-      assert {:error, :unauthorized} ==
-               Users.authenticate(%{user: user, password: "bad password"})
-    end
 
     test "get_user_by_email/1 finds an user by its email" do
       {:ok, %User{email: email} = user} = Users.register(%{email: @email, password: @password})

test/service/auth/authentificator_test.exs

@@ -0,0 +1,34 @@
+defmodule Mobilizon.Service.Auth.AuthenticatorTest do
+  use Mobilizon.DataCase
+
+  alias Mobilizon.Service.Auth.Authenticator
+  alias Mobilizon.Users
+  alias Mobilizon.Users.User
+  import Mobilizon.Factory
+
+  @email "email@domain.tld"
+  @password "password"
+
+  describe "test authentification" do
+    test "authenticate/1 checks the user's password" do
+      {:ok, %User{} = user} = Users.register(%{email: @email, password: @password})
+      Users.update_user(user, %{confirmed_at: DateTime.utc_now()})
+
+      assert {:ok, _} = Authenticator.authenticate(@email, @password)
+
+      assert {:error, :bad_password} ==
+               Authenticator.authenticate(@email, "completely wrong password")
+    end
+  end
+
+  describe "fetch_user/1" do
+    test "returns user by email" do
+      user = insert(:user)
+      assert Authenticator.fetch_user(user.email).id == user.id
+    end
+
+    test "returns nil" do
+      assert Authenticator.fetch_user("email") == {:error, :user_not_found}
+    end
+  end
+end

test/service/auth/ldap_authentificator_test.exs

@@ -0,0 +1,238 @@
+defmodule Mobilizon.Service.Auth.LDAPAuthenticatorTest do
+  use Mobilizon.Web.ConnCase
+  use Mobilizon.Tests.Helpers
+
+  alias Mobilizon.GraphQL.AbsintheHelpers
+  alias Mobilizon.Service.Auth.{Authenticator, LDAPAuthenticator}
+  alias Mobilizon.Users.User
+  alias Mobilizon.Web.Auth.Guardian
+
+  import Mobilizon.Factory
+  import ExUnit.CaptureLog
+  import Mock
+
+  @skip if !Code.ensure_loaded?(:eldap), do: :skip
+  @admin_password "admin_password"
+
+  setup_all do
+    clear_config([:ldap, :enabled], true)
+    clear_config([:ldap, :bind_uid], "admin")
+    clear_config([:ldap, :bind_password], @admin_password)
+  end
+
+  setup_all do:
+              clear_config(
+                Authenticator,
+                LDAPAuthenticator
+              )
+
+  @login_mutation """
+  mutation Login($email: String!, $password: String!) {
+    login(email: $email, password: $password) {
+        accessToken,
+        refreshToken,
+        user {
+          id
+        }
+      }
+    }
+  """
+
+  describe "login" do
+    @tag @skip
+    test "authorizes the existing user using LDAP credentials", %{conn: conn} do
+      user_password = "testpassword"
+      admin_password = "admin_password"
+      user = insert(:user, password_hash: Argon2.hash_pwd_salt(user_password))
+
+      host = [:ldap, :host] |> Mobilizon.Config.get() |> to_charlist
+      port = Mobilizon.Config.get([:ldap, :port])
+
+      with_mocks [
+        {:eldap, [],
+         [
+           open: fn [^host], [{:port, ^port}, {:ssl, false} | _] -> {:ok, self()} end,
+           simple_bind: fn _connection, _dn, password ->
+             case password do
+               ^admin_password -> :ok
+               ^user_password -> :ok
+             end
+           end,
+           equalityMatch: fn _type, _value -> :ok end,
+           wholeSubtree: fn -> :ok end,
+           search: fn _connection, _options ->
+             {:ok,
+              {:eldap_search_result, [{:eldap_entry, '', [{'cn', [to_charlist("MyUser")]}]}], []}}
+           end,
+           close: fn _connection ->
+             send(self(), :close_connection)
+             :ok
+           end
+         ]}
+      ] do
+        res =
+          conn
+          |> AbsintheHelpers.graphql_query(
+            query: @login_mutation,
+            variables: %{email: user.email, password: user_password}
+          )
+
+        assert is_nil(res["error"])
+        assert token = res["data"]["login"]["accessToken"]
+
+        {:ok, %User{} = user_from_token, _claims} = Guardian.resource_from_token(token)
+
+        assert user_from_token.id == user.id
+        assert_received :close_connection
+      end
+    end
+
+    @tag @skip
+    test "creates a new user after successful LDAP authorization", %{conn: conn} do
+      user_password = "testpassword"
+      admin_password = "admin_password"
+      user = build(:user)
+
+      host = [:ldap, :host] |> Mobilizon.Config.get() |> to_charlist
+      port = Mobilizon.Config.get([:ldap, :port])
+
+      with_mocks [
+        {:eldap, [],
+         [
+           open: fn [^host], [{:port, ^port}, {:ssl, false} | _] -> {:ok, self()} end,
+           simple_bind: fn _connection, _dn, password ->
+             case password do
+               ^admin_password -> :ok
+               ^user_password -> :ok
+             end
+           end,
+           equalityMatch: fn _type, _value -> :ok end,
+           wholeSubtree: fn -> :ok end,
+           search: fn _connection, _options ->
+             {:ok,
+              {:eldap_search_result, [{:eldap_entry, '', [{'cn', [to_charlist("MyUser")]}]}], []}}
+           end,
+           close: fn _connection ->
+             send(self(), :close_connection)
+             :ok
+           end
+         ]}
+      ] do
+        res =
+          conn
+          |> AbsintheHelpers.graphql_query(
+            query: @login_mutation,
+            variables: %{email: user.email, password: user_password}
+          )
+
+        assert is_nil(res["error"])
+        assert token = res["data"]["login"]["accessToken"]
+
+        {:ok, %User{} = user_from_token, _claims} = Guardian.resource_from_token(token)
+
+        assert user_from_token.email == user.email
+        assert_received :close_connection
+      end
+    end
+
+    @tag @skip
+    test "falls back to the default authorization when LDAP is unavailable", %{conn: conn} do
+      user_password = "testpassword"
+      admin_password = "admin_password"
+      user = insert(:user, password_hash: Argon2.hash_pwd_salt(user_password))
+
+      host = [:ldap, :host] |> Mobilizon.Config.get() |> to_charlist
+      port = Mobilizon.Config.get([:ldap, :port])
+
+      with_mocks [
+        {:eldap, [],
+         [
+           open: fn [^host], [{:port, ^port}, {:ssl, false} | _] -> {:error, 'connect failed'} end,
+           simple_bind: fn _connection, _dn, password ->
+             case password do
+               ^admin_password -> :ok
+               ^user_password -> :ok
+             end
+           end,
+           equalityMatch: fn _type, _value -> :ok end,
+           wholeSubtree: fn -> :ok end,
+           search: fn _connection, _options ->
+             {:ok,
+              {:eldap_search_result, [{:eldap_entry, '', [{'cn', [to_charlist("MyUser")]}]}], []}}
+           end,
+           close: fn _connection ->
+             send(self(), :close_connection)
+             :ok
+           end
+         ]}
+      ] do
+        log =
+          capture_log(fn ->
+            res =
+              conn
+              |> AbsintheHelpers.graphql_query(
+                query: @login_mutation,
+                variables: %{email: user.email, password: user_password}
+              )
+
+            assert is_nil(res["error"])
+            assert token = res["data"]["login"]["accessToken"]
+
+            {:ok, %User{} = user_from_token, _claims} = Guardian.resource_from_token(token)
+
+            assert user_from_token.email == user.email
+          end)
+
+        assert log =~ "Could not open LDAP connection: 'connect failed'"
+        refute_received :close_connection
+      end
+    end
+
+    @tag @skip
+    test "disallow authorization for wrong LDAP credentials", %{conn: conn} do
+      user_password = "testpassword"
+      user = insert(:user, password_hash: Argon2.hash_pwd_salt(user_password))
+
+      host = [:ldap, :host] |> Mobilizon.Config.get() |> to_charlist
+      port = Mobilizon.Config.get([:ldap, :port])
+
+      with_mocks [
+        {:eldap, [],
+         [
+           open: fn [^host], [{:port, ^port}, {:ssl, false} | _] -> {:ok, self()} end,
+           simple_bind: fn _connection, _dn, _password -> {:error, :invalidCredentials} end,
+           close: fn _connection ->
+             send(self(), :close_connection)
+             :ok
+           end
+         ]}
+      ] do
+        res =
+          conn
+          |> AbsintheHelpers.graphql_query(
+            query: @login_mutation,
+            variables: %{email: user.email, password: user_password}
+          )
+
+        refute is_nil(res["errors"])
+
+        assert assert hd(res["errors"])["message"] ==
+                        "Impossible to authenticate, either your email or password are invalid."
+
+        assert_received :close_connection
+      end
+    end
+  end
+
+  describe "can change" do
+    test "password" do
+      assert LDAPAuthenticator.can_change_password?(%User{provider: "ldap"}) == false
+      assert LDAPAuthenticator.can_change_password?(%User{provider: nil}) == true
+    end
+
+    test "email" do
+      assert LDAPAuthenticator.can_change_password?(%User{provider: "ldap"}) == false
+      assert LDAPAuthenticator.can_change_password?(%User{provider: nil}) == true
+    end
+  end
+end

test/service/auth/mobilizon_authentificator_test.exs

@@ -0,0 +1,29 @@
+defmodule Mobilizon.Service.Auth.MobilizonAuthenticatorTest do
+  use Mobilizon.DataCase
+
+  alias Mobilizon.Service.Auth.MobilizonAuthenticator
+  alias Mobilizon.Users.User
+  import Mobilizon.Factory
+
+  setup do
+    password = "testpassword"
+    email = "someone@somewhere.tld"
+    user = insert(:user, email: email, password_hash: Argon2.hash_pwd_salt(password))
+    {:ok, [user: user, email: email, password: password]}
+  end
+
+  test "login", %{email: email, password: password, user: user} do
+    assert {:ok, %User{} = returned_user} = MobilizonAuthenticator.login(email, password)
+    assert returned_user.id == user.id
+  end
+
+  test "login with invalid password", %{email: email} do
+    assert {:error, :bad_password} == MobilizonAuthenticator.login(email, "invalid")
+    assert {:error, :bad_password} == MobilizonAuthenticator.login(email, nil)
+  end
+
+  test "login with no credentials" do
+    assert {:error, :user_not_found} == MobilizonAuthenticator.login("some@email.com", nil)
+    assert {:error, :user_not_found} == MobilizonAuthenticator.login(nil, nil)
+  end
+end

test/support/factory.ex

@@ -18,7 +18,8 @@ defmodule Mobilizon.Factory do
       role: :user,
       confirmed_at: DateTime.utc_now() |> DateTime.truncate(:second),
       confirmation_sent_at: nil,
-      confirmation_token: nil
+      confirmation_token: nil,
+      provider: nil
     }
   end
 

test/support/helpers.ex

@@ -7,6 +7,7 @@ defmodule Mobilizon.Tests.Helpers do
   @moduledoc """
   Helpers for use in tests.
   """
+  alias Mobilizon.Config
 
   defmacro clear_config(config_path) do
     quote do
@@ -17,13 +18,19 @@ defmodule Mobilizon.Tests.Helpers do
 
   defmacro clear_config(config_path, do: yield) do
     quote do
-      setup do
+      initial_setting = Config.get(unquote(config_path))
-        initial_setting = Mobilizon.Config.get(unquote(config_path))
       unquote(yield)
-        on_exit(fn -> Mobilizon.Config.put(unquote(config_path), initial_setting) end)
+      on_exit(fn -> Config.put(unquote(config_path), initial_setting) end)
       :ok
     end
   end
+
+  defmacro clear_config(config_path, temp_setting) do
+    quote do
+      clear_config(unquote(config_path)) do
+        Config.put(unquote(config_path), unquote(temp_setting))
+      end
+    end
   end
 
   defmacro __using__(_opts) do

test/web/controllers/auth_controller_test.exs

@@ -0,0 +1,54 @@
+defmodule Mobilizon.Web.AuthControllerTest do
+  use Mobilizon.Web.ConnCase
+  alias Mobilizon.Service.Auth.Authenticator
+  alias Mobilizon.Users.User
+
+  @email "someone@somewhere.tld"
+
+  test "login and registration",
+       %{conn: conn} do
+    conn =
+      conn
+      |> assign(:ueberauth_auth, %Ueberauth.Auth{
+        strategy: Ueberauth.Strategy.Twitter,
+        extra: %Ueberauth.Auth.Extra{raw_info: %{user: %{"email" => @email}}}
+      })
+      |> get("/auth/twitter/callback")
+
+    assert html_response(conn, 200) =~ "auth-access-token"
+
+    assert %User{confirmed_at: confirmed_at, email: @email} = Authenticator.fetch_user(@email)
+
+    refute is_nil(confirmed_at)
+  end
+
+  test "on bad provider error", %{
+    conn: conn
+  } do
+    conn =
+      conn
+      |> assign(:ueberauth_failure, %{errors: [%{message: "Some error"}]})
+      |> get("/auth/nothing")
+
+    assert "/login?code=Login Provider not found&provider=nothing" =
+             redirection = redirected_to(conn, 302)
+
+    conn = get(recycle(conn), redirection)
+    assert html_response(conn, 200)
+  end
+
+  test "on authentication error", %{
+    conn: conn
+  } do
+    conn =
+      conn
+      |> assign(:ueberauth_failure, %{errors: [%{message: "Some error"}]})
+      |> get("/auth/twitter/callback")
+
+    assert "/login?code=Error with Login Provider&provider=twitter" =
+             redirection = redirected_to(conn, 302)
+
+    conn = get(recycle(conn), redirection)
+    assert html_response(conn, 200)
+  end
+end