add support for downloading avatars from gravatar

css/icons.scss

@@ -41,6 +41,7 @@
 @include icon-black-white('twitter', 'contacts', 2);	// “twitter (fab)” by fontawesome.com is licensed under CC BY 4.0. (https://fontawesome.com/icons/twitter?style=brands)
 @include icon-black-white('diaspora', 'contacts', 2);	// “diaspora (fab)” by fontawesome.com is licensed under CC BY 4.0. (https://fontawesome.com/icons/diaspora?style=brands)
 @include icon-black-white('xing', 'contacts', 2);		// “xing (fab)” by fontawesome.com is licensed under CC BY 4.0. (https://fontawesome.com/icons/xing?style=brands)
+@include icon-black-white('gravatar', 'contacts', 2);		// “gravatar (fab)” by svgrepo.com is licensed under public domain CCO 1.0. (https://www.svgrepo.com/page/licensing)
 
 .icon-up-force-white {
 	// using #fffffe to trick the accessibility dark theme icon invert

img/license.txt

@@ -6,3 +6,5 @@
 * “twitter (fab)” by fontawesome.com is licensed under CC BY 4.0. (https://fontawesome.com/icons/twitter?style=brands)
 * “diaspora (fab)” by fontawesome.com is licensed under CC BY 4.0. (https://fontawesome.com/icons/diaspora?style=brands)
 * “xing (fab)” by fontawesome.com is licensed under CC BY 4.0. (https://fontawesome.com/icons/xing?style=brands)
+* “gravatar (fab)” by svgrepo.com is licensed under public domain CCO 1.0. (https://www.svgrepo.com/page/licensing)
+

lib/Service/Social/CompositeSocialProvider.php

@@ -37,17 +37,19 @@ public function __construct(InstagramProvider $instagramProvider,
 								TwitterProvider $twitterProvider,
 								TumblrProvider $tumblrProvider,
 								DiasporaProvider $diasporaProvider,
-								XingProvider $xingProvider) {
+								XingProvider $xingProvider,
+								GravatarProvider $gravatarProvider) {
 
 		// This determines the priority of known providers
 		$this->providers = [
-			'instagram' => $instagramProvider,
-			'mastodon'  => $mastodonProvider,
-			'twitter'   => $twitterProvider,
-			'facebook'  => $facebookProvider,
-			'tumblr'    => $tumblrProvider,
-			'diaspora'  => $diasporaProvider,
-			'xing'      => $xingProvider,
+			$instagramProvider->name  => $instagramProvider,
+			$mastodonProvider->name   => $mastodonProvider,
+			$twitterProvider->name    => $twitterProvider,
+			$facebookProvider->name   => $facebookProvider,
+			$tumblrProvider->name     => $tumblrProvider,
+			$diasporaProvider->name   => $diasporaProvider,
+			$xingProvider->name       => $xingProvider,
+			$gravatarProvider->name   => $gravatarProvider
 		];
 	}
 
@@ -60,40 +62,28 @@ public function getSupportedNetworks() : array {
 		return array_keys($this->providers);
 	}
 
-
 	/**
 	 * generate download url for a social entry
 	 *
-	 * @param array socialEntries all social data from the contact
-	 * @param String network the choice which network to use (fallback: take first available)
+	 * @param String network the choice which network to use
 	 *
-	 * @returns String the url to the requested information or null in case of errors
+	 * @return ISocialProvider if provider of 'network' is found, otherwise null
 	 */
-	public function getSocialConnector(array $socialEntries, string $network) : ?string {
+	public function getSocialConnector(string $network) : ?ISocialProvider {
 		$connector = null;
-		$selection = $this->providers;
 		// check if dedicated network selected
 		if (isset($this->providers[$network])) {
-			$selection = [$network => $this->providers[$network]];
+			$connector = $this->providers[$network];
 		}
+		return $connector;
+	}
 
-		// check selected providers in order
-		foreach ($selection as $type => $socialProvider) {
-
-			// search for this network in user's profile
-			foreach ($socialEntries as $socialEntry) {
-				if (strtolower($type) === strtolower($socialEntry['type'])) {
-					$profileId = $socialProvider->cleanupId($socialEntry['value']);
-					if (!is_null($profileId)) {
-						$connector = $socialProvider->getImageUrl($profileId);
-					}
-					break;
-				}
-			}
-			if ($connector) {
-				break;
-			}
-		}
-		return ($connector);
+	/**
+	 * generate download url for a social entry
+	 *
+	 * @return ISocialProvider[] all social providers
+	 */
+	public function getSocialConnectors() : array {
+		return array_values($this->providers);
 	}
 }

lib/Service/Social/DiasporaProvider.php

@@ -30,31 +30,48 @@ class DiasporaProvider implements ISocialProvider {
 	/** @var IClientService */
 	private $httpClient;
 
-	/** @var boolean */
+	/** @var bool */
 	private $looping;
 
+	/** @var string */
+	public $name = "diaspora";
+
 	public function __construct(IClientService $httpClient) {
 		$this->httpClient = $httpClient->NewClient();
 		$this->looping = false;
 	}
-	
+
 	/**
-	 * Returns the profile-id
+	 * Returns if this provider supports this contact
 	 *
-	 * @param {string} the value from the contact's x-socialprofile
+	 * @param {array} contact info
 	 *
-	 * @return string
+	 * @return bool
 	 */
-	public function cleanupId(string $candidate):string {
-		try {
-			if (strpos($candidate, 'http') !== 0) {
-				$user_server = explode('@', $candidate);
-				$candidate = 'https://' . array_pop($user_server) . '/public/' . array_pop($user_server) . '.atom';
+	public function supportsContact(array $contact):bool {
+		$socialprofiles = $this->getProfileIds($contact);
+		return isset($socialprofiles) && count($socialprofiles) > 0;
+	}
+
+	/**
+	 * Returns all possible profile-picture urls
+	 *
+	 * @param {array} contact information
+	 *
+	 * @return array
+	 */
+	public function getImageUrls(array $contact):array {
+		$profileIds = $this->getProfileIds($contact);
+		$urls = [];
+
+		foreach ($profileIds as $profileId) {
+			$url = $this->getImageUrl($profileId);
+			if (isset($url)) {
+				$urls[] = $url;
 			}
-		} catch (Exception $e) {
-			$candidate = null;
 		}
-		return $candidate;
+
+		return $urls;
 	}
 
 	/**
@@ -64,7 +81,7 @@ public function cleanupId(string $candidate):string {
 	 *
 	 * @return string|null
 	 */
-	public function getImageUrl(string $profileUrl):?string {
+	protected function getImageUrl(string $profileUrl):?string {
 		try {
 			$result = $this->httpClient->get($profileUrl);
 			$htmlResult = $result->getBody();
@@ -82,8 +99,51 @@ public function getImageUrl(string $profileUrl):?string {
 				}
 			}
 			return null;
-		} catch (Exception $e) {
+		} catch (\Exception $e) {
 			return null;
 		}
 	}
+
+	/**
+	 * Returns all possible profile ids for contact
+	 *
+	 * @param {array} contact information
+	 *
+	 * @return array
+	 */
+	protected function getProfileIds($contact):array {
+		$socialprofiles = $contact['X-SOCIALPROFILE'];
+		$profileIds = [];
+
+		if (isset($socialprofiles)) {
+			foreach ($socialprofiles as $profile) {
+				if (strtolower($profile['type']) == $this->name) {
+					$profileId = $this->cleanupId($profile['value']);
+					if (isset($profileId)) {
+						$profileIds[] = $profileId;
+					}
+				}
+			}
+		}
+		return $profileIds;
+	}
+
+	/**
+	 * Returns the profile-id
+	 *
+	 * @param {string} the value from the contact's x-socialprofile
+	 *
+	 * @return string
+	 */
+	protected function cleanupId(string $candidate):?string {
+		try {
+			if (strpos($candidate, 'http') !== 0) {
+				$user_server = explode('@', $candidate);
+				$candidate = 'https://' . array_pop($user_server) . '/public/' . array_pop($user_server) . '.atom';
+			}
+		} catch (\Exception $e) {
+			$candidate = null;
+		}
+		return $candidate;
+	}
 }

lib/Service/Social/FacebookProvider.php

@@ -30,18 +30,51 @@ class FacebookProvider implements ISocialProvider {
 	/** @var IClientService */
 	private $httpClient;
 
+	/** @var string */
+	public $name = "facebook";
+
 	public function __construct(IClientService $httpClient) {
 		$this->httpClient = $httpClient->NewClient();
 	}
-
+
+	/**
+	 * Returns if this provider supports this contact
+	 *
+	 * @param {array} contact info
+	 *
+	 * @return bool
+	 */
+	public function supportsContact(array $contact):bool {
+		$socialprofiles = $this->getProfiles($contact);
+		return isset($socialprofiles) && count($socialprofiles) > 0;
+	}
+
+	/**
+	 * Returns the profile-picture url
+	 *
+	 * @param {array} contact information
+	 *
+	 * @return array
+	 */
+	public function getImageUrls(array $contact):array {
+		$profileIds = $this->getProfileIds($contact);
+		$urls = [];
+		foreach ($profileIds as $profileId) {
+			$recipe = 'https://graph.facebook.com/{socialId}/picture?width=720';
+			$connector = str_replace("{socialId}", $profileId, $recipe);
+			$urls[] = $connector;
+		}
+		return $urls;
+	}
+
 	/**
 	 * Returns the profile-id
 	 *
 	 * @param {string} the value from the contact's x-socialprofile
 	 *
 	 * @return string
 	 */
-	public function cleanupId(string $candidate):string {
+	protected function cleanupId(string $candidate):string {
 		$candidate = basename($candidate);
 		if (!is_numeric($candidate)) {
 			$candidate = $this->findFacebookId($candidate);
@@ -50,16 +83,39 @@ public function cleanupId(string $candidate):string {
 	}
 
 	/**
-	 * Returns the profile-picture url
+	 * Returns all possible profile ids for contact
 	 *
-	 * @param {string} profileId the profile-id
+	 * @param {array} contact information
 	 *
-	 * @return string
+	 * @return array of string profile ids
 	 */
-	public function getImageUrl(string $profileId):string {
-		$recipe = 'https://graph.facebook.com/{socialId}/picture?width=720';
-		$connector = str_replace("{socialId}", $profileId, $recipe);
-		return $connector;
+	protected function getProfiles(array $contact):array {
+		$socialprofiles = $contact['X-SOCIALPROFILE'];
+		$profiles = [];
+		if (isset($socialprofiles)) {
+			foreach ($socialprofiles as $profile) {
+				if (strtolower($profile['type']) == $this->name) {
+					$profiles[] = $profile['value'];
+				}
+			}
+		}
+		return $profiles;
+	}
+
+	/**
+	 * Returns all possible profile ids for contact
+	 *
+	 * @param {array} contact information
+	 *
+	 * @return array of string profile ids
+	 */
+	protected function getProfileIds(array $contact):array {
+		$profiles = $this->getProfiles($contact);
+		$profileIds = [];
+		foreach ($profiles as $profile) {
+			$profileIds[] = $this->cleanupId($profile);
+		}
+		return $profileIds;
 	}
 
 	/**

lib/Service/Social/GravatarProvider.php

@@ -0,0 +1,65 @@
+<?php
+/**
+ * @copyright Copyright (c) 2020 Matthias Heinisch <nextcloud@matthiasheinisch.de>
+ *
+ * @author leith <online-nextcloud@eleith.com>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace OCA\Contacts\Service\Social;
+
+class GravatarProvider implements ISocialProvider {
+	/** @var string */
+	public $name = "gravatar";
+
+	public function __construct() {
+	}
+
+	/**
+	 * Returns if this provider supports this contact
+	 *
+	 * @param {array} contact info
+	 *
+	 * @return bool
+	 */
+	public function supportsContact(array $contact):bool {
+		$emails = $contact['EMAIL'];
+		return isset($emails) && count($emails);
+	}
+
+	/**
+	 * Returns the profile-picture url
+	 *
+	 * @param {array} contact information
+	 *
+	 * @return array
+	 */
+	public function getImageUrls(array $contact):array {
+		$urls = [];
+		$emails = $contact['EMAIL'];
+		if (isset($emails)) {
+			foreach ($emails as $email) {
+				$hash = md5(strtolower(trim($email['value'])));
+				$recipe = 'https://www.gravatar.com/avatar/{hash}?s=720&d=404';
+				$connector = str_replace("{hash}", $hash, $recipe);
+				$urls[] = $connector;
+			}
+		}
+		return $urls;
+	}
+}