nextcloud与oauth2集成教程

摘要：基础环境安装在官方应用商店下载解压并拷贝至目录打开并在应用中启用配置使用管理员账号打开找到设置，选择并添加信息，如下设置只使用登录，取消系统登录编辑添加以下配置使用注销使用中发现点击登出后，只是注销了本身的，并没有注销的，因此会登出失败打开

Nextcloud 15.0.5

oauth2

在官方app应用商店下载 sociallogin

解压并拷贝 sociallogin 至 app 目录

打开 Nextcloud 并在 应用中启用

使用管理员账号打开 Nextcloud 找到 sociallogin设置，选择 Custom OAuth2 并添加oauth2信息，如下

设置只使用oauth2登录，取消系统登录
编辑 /var/www/html/config/config.php 添加以下配置：

"social_login_auto_redirect" => true

使用中发现点击登出后，Nextcloud只是注销了本身的session，并没有注销oauth2的session，因此会登出失败.
打开 core/Controller/LoginController.php 找到 logout 方法，修改 $response 值如下：

$response = new RedirectResponse("http://10.0.4.3/logout?redirect_uri=http://10.0.4.33:8088");

http://10.0.4.3/logout 为oauth2认证系统登出地址

在使用oauth2登录成功后，为了与原有Nextcloud用户区分，Nextcloud会在数据库中创建一个用户名为 oauth2 Internal name + 登录名称的用户，这样使用起来及其不方便，我们可以通过修改以下代码，保证用户名正常不带前缀：

根据返回用户信息中其他信息创建组

sociallogin/lib/Controller/LoginController.php

private function login($uid, Profile $profile)
{
    $user = $this->userManager->get($uid);
    if (null === $user) {
        $connectedUid = $this->socialConnect->findUID($uid);
        $user = $this->userManager->get($connectedUid);
    }
    if ($this->userSession->isLoggedIn()) {
        if (!$this->config->getAppValue($this->appName, "allow_login_connect")) {
            throw new LoginException($this->l->t("Social login connect is disabled"));
        }
        if (null !== $user) {
            throw new LoginException($this->l->t("This account already connected"));
        }
        $currentUid = $this->userSession->getUser()->getUID();
        $this->socialConnect->connectLogin($currentUid, $uid);
        return new RedirectResponse($this->urlGenerator->linkToRoute("settings.PersonalSettings.index", ["section" => "additional"]));
    }
    if (null === $user) {
        if ($this->config->getAppValue($this->appName, "disable_registration")) {
            throw new LoginException($this->l->t("Auto creating new users is disabled"));
        }
        if (
            $profile->email && $this->config->getAppValue($this->appName, "prevent_create_email_exists")
            && count($this->userManager->getByEmail($profile->email)) !== 0
        ) {
            throw new LoginException($this->l->t("Email already registered"));
        }
        $password = substr(base64_encode(random_bytes(64)), 0, 30);
        $user = $this->userManager->createUser($uid, $password);
        $user->setDisplayName($profile->displayName ?: $profile->identifier);
        $user->setEMailAddress((string)$profile->email);

        $newUserGroup = $this->config->getAppValue($this->appName, "new_user_group");
        if ($newUserGroup) {
            try {
                $group = $this->groupManager->get($newUserGroup);
                $group->addUser($user);
            } catch (Exception $e) {
            }
        }

        if ($profile->photoURL) {
            $curl = new Curl();
            try {
                $photo = $curl->request($profile->photoURL);
                $avatar = $this->avatarManager->getAvatar($uid);
                $avatar->set($photo);
            } catch (Exception $e) {
            }
        }
        $this->config->setUserValue($uid, $this->appName, "disable_password_confirmation", 1);
        if ($profile->data["departmentName"] !== null) {
            $existGroup = $this->groupManager->get($profile->data["departmentName"]);
            if ($existGroup === null) {
                $newGroup = $this->groupManager->createGroup($profile->data["departmentName"]);
                $newGroup->addUser($user);
            } else {
                $existGroup->addUser($user);
            }
        }
    }

    $this->userSession->completeLogin($user, ["loginName" => $user->getUID(), "password" => null]);
    $this->userSession->createSessionToken($this->request, $user->getUID(), $user->getUID());

    if ($redirectUrl = $this->session->get("login_redirect_url")) {
        return new RedirectResponse($redirectUrl);
    }

    $this->session->set("last-password-confirm", time());

    return new RedirectResponse($this->urlGenerator->getAbsoluteURL("/"));
}

sociallogin/lib/Provider/CustomOAuth2.php

public function getUserProfile()
    {
        $profileFields = array_filter(
            array_map("trim", explode(",", $this->config->get("profile_fields"))),
            function ($val) {
                return !empty($val);
            }
        );
        $profileUrl = $this->config->get("endpoints")->get("profile_url");

        if (count($profileFields) > 0) {
            $profileUrl .= (strpos($profileUrl, "?") !== false ? "&" : "?") . "fields=" . implode(",", $profileFields);
        }
        $response = $this->apiRequest($profileUrl);
        if (!isset($response->identifier) && isset($response->id)) {
            $response->identifier = $response->id;
        }
        if (!isset($response->identifier) && isset($response->data->id)) {
            $response->identifier = $response->data->id;
        }
        if (!isset($response->identifier) && isset($response->user_id)) {
            $response->identifier = $response->user_id;
        }
        $data = new DataCollection($response);
        if (!$data->exists("identifier")) {
            throw new UnexpectedApiResponseException("Provider API returned an unexpected response.");
        }
        $userProfile = new UserProfile();
        foreach ($data->toArray() as $key => $value) {
            if (property_exists($userProfile, $key)) {
                $userProfile->$key = $value;
            }
        }
        if (!empty($userProfile->email)) {
            $userProfile->emailVerified = $userProfile->email;
        }
        $attributes = new DataCollection($data->get("attributes"));
        $userProfile->data = [
            "organizationName" => $attributes->get("organizationName"),
            "departmentName" => $attributes->get("departmentName"),
        ];
        if ($attributes->get("name") !== null) {
            $userProfile->displayName = $attributes->get("name");
        }
        return $userProfile;
    }