| // Copyright (C) 2013 The Android Open Source Project |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package com.googlesource.gerrit.plugins.avatars.gravatar; |
| |
| import com.google.gerrit.extensions.annotations.Listen; |
| import com.google.gerrit.server.IdentifiedUser; |
| import com.google.gerrit.server.avatar.AvatarProvider; |
| import com.google.gerrit.server.config.CanonicalWebUrl; |
| import com.google.inject.Inject; |
| import com.google.inject.Singleton; |
| |
| import java.io.UnsupportedEncodingException; |
| import java.security.MessageDigest; |
| import java.security.NoSuchAlgorithmException; |
| |
| @Listen |
| @Singleton |
| public class GravatarAvatarProvider implements AvatarProvider { |
| |
| private static final char[] HEX = {'0', '1', '2', '3', '4', '5', '6', '7', |
| '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'}; |
| |
| private static String hex(byte[] in) { |
| StringBuilder r = new StringBuilder(2 * in.length); |
| for (byte b : in) { |
| r.append(HEX[(b & 0xf0) >>> 4]).append(HEX[b & 0xf]); |
| } |
| return r.toString(); |
| } |
| |
| private final boolean ssl; |
| |
| @Inject |
| GravatarAvatarProvider(@CanonicalWebUrl String canonicalUrl) { |
| ssl = canonicalUrl.startsWith("https://"); |
| } |
| |
| @Override |
| public String getUrl(IdentifiedUser forUser, int imageSize) { |
| if (forUser.getAccount().getPreferredEmail() == null) { |
| return null; |
| } |
| final String email = |
| forUser.getAccount().getPreferredEmail().trim().toLowerCase(); |
| final byte[] emailMd5; |
| try { |
| MessageDigest digest = MessageDigest.getInstance("MD5"); |
| emailMd5 = digest.digest(email.getBytes("UTF-8")); |
| } catch (UnsupportedEncodingException e) { |
| throw new RuntimeException("JVM lacks UTF-8 encoding", e); |
| } catch (NoSuchAlgorithmException e) { |
| throw new RuntimeException( |
| "MD5 digest not supported - required for Gravatar"); |
| } |
| StringBuilder url = new StringBuilder(); |
| if (ssl) { |
| url.append("https://"); |
| } else { |
| url.append("http://"); |
| } |
| url.append("www.gravatar.com/avatar/"); |
| url.append(hex(emailMd5)); |
| url.append(".jpg"); |
| // TODO: currently we force the default icon to identicon and the rating |
| // to PG. It'd be nice to have these be admin-configurable. |
| url.append("?d=identicon&r=pg"); |
| if (imageSize > 0) { |
| url.append("&s=").append(imageSize); |
| } |
| return url.toString(); |
| } |
| |
| @Override |
| public String getChangeAvatarUrl(IdentifiedUser forUser) { |
| return "http://www.gravatar.com"; |
| } |
| } |