Initial version
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..80d6257
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,5 @@
+/target
+/.classpath
+/.project
+/.settings/org.maven.ide.eclipse.prefs
+/.settings/org.eclipse.m2e.core.prefs
diff --git a/.settings/org.eclipse.core.resources.prefs b/.settings/org.eclipse.core.resources.prefs
new file mode 100644
index 0000000..f9fe345
--- /dev/null
+++ b/.settings/org.eclipse.core.resources.prefs
@@ -0,0 +1,4 @@
+eclipse.preferences.version=1
+encoding//src/main/java=UTF-8
+encoding//src/test/java=UTF-8
+encoding/<project>=UTF-8
diff --git a/.settings/org.eclipse.core.runtime.prefs b/.settings/org.eclipse.core.runtime.prefs
new file mode 100644
index 0000000..8667cfd
--- /dev/null
+++ b/.settings/org.eclipse.core.runtime.prefs
@@ -0,0 +1,3 @@
+#Tue Sep 02 16:59:24 PDT 2008
+eclipse.preferences.version=1
+line.separator=\n
diff --git a/.settings/org.eclipse.jdt.core.prefs b/.settings/org.eclipse.jdt.core.prefs
new file mode 100644
index 0000000..9b7deb7
--- /dev/null
+++ b/.settings/org.eclipse.jdt.core.prefs
@@ -0,0 +1,268 @@
+eclipse.preferences.version=1
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+org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
+org.eclipse.jdt.core.compiler.compliance=1.6
+org.eclipse.jdt.core.compiler.debug.lineNumber=generate
+org.eclipse.jdt.core.compiler.debug.localVariable=generate
+org.eclipse.jdt.core.compiler.debug.sourceFile=generate
+org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
+org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
+org.eclipse.jdt.core.compiler.problem.forbiddenReference=warning
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+org.eclipse.jdt.core.formatter.keep_imple_if_on_one_line=true
+org.eclipse.jdt.core.formatter.keep_then_statement_on_same_line=false
+org.eclipse.jdt.core.formatter.lineSplit=80
+org.eclipse.jdt.core.formatter.never_indent_block_comments_on_first_column=false
+org.eclipse.jdt.core.formatter.never_indent_line_comments_on_first_column=false
+org.eclipse.jdt.core.formatter.number_of_blank_lines_at_beginning_of_method_body=0
+org.eclipse.jdt.core.formatter.number_of_empty_lines_to_preserve=3
+org.eclipse.jdt.core.formatter.put_empty_statement_on_new_line=false
+org.eclipse.jdt.core.formatter.tabulation.char=space
+org.eclipse.jdt.core.formatter.tabulation.size=2
+org.eclipse.jdt.core.formatter.use_tabs_only_for_leading_indentations=false
+org.eclipse.jdt.core.formatter.wrap_before_binary_operator=true
diff --git a/.settings/org.eclipse.jdt.ui.prefs b/.settings/org.eclipse.jdt.ui.prefs
new file mode 100644
index 0000000..d4218a5
--- /dev/null
+++ b/.settings/org.eclipse.jdt.ui.prefs
@@ -0,0 +1,61 @@
+#Wed Jul 29 11:31:38 PDT 2009
+eclipse.preferences.version=1
+editor_save_participant_org.eclipse.jdt.ui.postsavelistener.cleanup=true
+formatter_profile=_Google Format
+formatter_settings_version=11
+org.eclipse.jdt.ui.ignorelowercasenames=true
+org.eclipse.jdt.ui.importorder=com.google;com;junit;net;org;java;javax;
+org.eclipse.jdt.ui.ondemandthreshold=99
+org.eclipse.jdt.ui.staticondemandthreshold=99
+org.eclipse.jdt.ui.text.custom_code_templates=<?xml version\="1.0" encoding\="UTF-8" standalone\="no"?><templates/>
+sp_cleanup.add_default_serial_version_id=true
+sp_cleanup.add_generated_serial_version_id=false
+sp_cleanup.add_missing_annotations=false
+sp_cleanup.add_missing_deprecated_annotations=true
+sp_cleanup.add_missing_methods=false
+sp_cleanup.add_missing_nls_tags=false
+sp_cleanup.add_missing_override_annotations=true
+sp_cleanup.add_serial_version_id=false
+sp_cleanup.always_use_blocks=true
+sp_cleanup.always_use_parentheses_in_expressions=false
+sp_cleanup.always_use_this_for_non_static_field_access=false
+sp_cleanup.always_use_this_for_non_static_method_access=false
+sp_cleanup.convert_to_enhanced_for_loop=false
+sp_cleanup.correct_indentation=false
+sp_cleanup.format_source_code=false
+sp_cleanup.format_source_code_changes_only=false
+sp_cleanup.make_local_variable_final=true
+sp_cleanup.make_parameters_final=true
+sp_cleanup.make_private_fields_final=true
+sp_cleanup.make_type_abstract_if_missing_method=false
+sp_cleanup.make_variable_declarations_final=false
+sp_cleanup.never_use_blocks=false
+sp_cleanup.never_use_parentheses_in_expressions=true
+sp_cleanup.on_save_use_additional_actions=true
+sp_cleanup.organize_imports=false
+sp_cleanup.qualify_static_field_accesses_with_declaring_class=false
+sp_cleanup.qualify_static_member_accesses_through_instances_with_declaring_class=true
+sp_cleanup.qualify_static_member_accesses_through_subtypes_with_declaring_class=true
+sp_cleanup.qualify_static_member_accesses_with_declaring_class=false
+sp_cleanup.qualify_static_method_accesses_with_declaring_class=false
+sp_cleanup.remove_private_constructors=true
+sp_cleanup.remove_trailing_whitespaces=true
+sp_cleanup.remove_trailing_whitespaces_all=true
+sp_cleanup.remove_trailing_whitespaces_ignore_empty=false
+sp_cleanup.remove_unnecessary_casts=false
+sp_cleanup.remove_unnecessary_nls_tags=false
+sp_cleanup.remove_unused_imports=false
+sp_cleanup.remove_unused_local_variables=false
+sp_cleanup.remove_unused_private_fields=true
+sp_cleanup.remove_unused_private_members=false
+sp_cleanup.remove_unused_private_methods=true
+sp_cleanup.remove_unused_private_types=true
+sp_cleanup.sort_members=false
+sp_cleanup.sort_members_all=false
+sp_cleanup.use_blocks=false
+sp_cleanup.use_blocks_only_for_return_and_throw=false
+sp_cleanup.use_parentheses_in_expressions=false
+sp_cleanup.use_this_for_non_static_field_access=false
+sp_cleanup.use_this_for_non_static_field_access_only_if_necessary=true
+sp_cleanup.use_this_for_non_static_method_access=false
+sp_cleanup.use_this_for_non_static_method_access_only_if_necessary=true
diff --git a/pom.xml b/pom.xml
new file mode 100644
index 0000000..3afd20e
--- /dev/null
+++ b/pom.xml
@@ -0,0 +1,64 @@
+<?xml version="1.0"?>
+<project
+  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
+  xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+  <modelVersion>4.0.0</modelVersion>
+  <artifactId>external-url-avatar-provider</artifactId>
+  <groupId>com.googlesource.gerrit.plugins.avatar_providers</groupId>
+  <version>1.0-SNAPSHOT</version>
+  <packaging>jar</packaging>
+  <properties>
+    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    <Gerrit-ApiType>PLUGIN</Gerrit-ApiType>
+    <Gerrit-ApiVersion>2.8-SNAPSHOT</Gerrit-ApiVersion>
+  </properties>
+
+  <build>
+    <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-jar-plugin</artifactId>
+        <version>2.4</version>
+        <configuration>
+          <archive>
+            <manifestEntries>
+              <Implementation-Title>Gerrit Code Review - external url gravatar provider</Implementation-Title>
+              <Implementation-Version>${project.version}</Implementation-Version>
+              <Implementation-Vendor>Gerrit Code Review</Implementation-Vendor>
+              <Implementation-Vendor-URL>http://code.google.com/p/gerrit/</Implementation-Vendor-URL>
+              <Gerrit-ApiType>${Gerrit-ApiType}</Gerrit-ApiType>
+              <Gerrit-ApiVersion>${Gerrit-ApiVersion}</Gerrit-ApiVersion>
+            </manifestEntries>
+          </archive>
+        </configuration>
+      </plugin>
+
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-compiler-plugin</artifactId>
+        <version>2.3.2</version>
+        <configuration>
+          <source>1.6</source>
+          <target>1.6</target>
+          <encoding>UTF-8</encoding>
+        </configuration>
+      </plugin>
+    </plugins>
+  </build>
+
+  <dependencies>
+    <dependency>
+      <groupId>com.google.gerrit</groupId>
+      <artifactId>gerrit-plugin-api</artifactId>
+      <version>${Gerrit-ApiVersion}</version>
+      <scope>provided</scope>
+    </dependency>
+  </dependencies>
+
+  <repositories>
+    <repository>
+      <id>gerrit-api-repository</id>
+      <url>https://gerrit-api.commondatastorage.googleapis.com/snapshot/</url>
+    </repository>
+  </repositories>
+</project>
diff --git a/src/main/java/org/typo3/gerrit/plugins/avatars/typo3org/ExternalUrlAvatarProvider.java b/src/main/java/org/typo3/gerrit/plugins/avatars/typo3org/ExternalUrlAvatarProvider.java
new file mode 100644
index 0000000..5569873
--- /dev/null
+++ b/src/main/java/org/typo3/gerrit/plugins/avatars/typo3org/ExternalUrlAvatarProvider.java
@@ -0,0 +1,87 @@
+// Copyright (C) 2013 Steffen Gebert, for TYPO3 Association
+//
+// 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 org.typo3.gerrit.plugins.avatars.typo3org;
+
+import com.google.gerrit.extensions.annotations.Listen;
+import com.google.gerrit.reviewdb.client.AccountExternalId;
+import com.google.gerrit.reviewdb.client.AccountExternalId.Key;
+import com.google.gerrit.server.IdentifiedUser;
+import com.google.gerrit.server.avatar.AvatarProvider;
+import com.google.gerrit.server.config.CanonicalWebUrl;
+import com.google.gerrit.server.config.GerritServerConfig;
+import com.google.inject.Inject;
+import com.google.inject.Singleton;
+
+import org.eclipse.jgit.lib.Config;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.UnsupportedEncodingException;
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
+
+import javax.annotation.Nullable;
+
+@Listen
+@Singleton
+public class ExternalUrlAvatarProvider implements AvatarProvider {
+
+  private final boolean ssl;
+  private String externalAvatarUrl;
+  private final String avatarChangeUrl;
+
+  @Inject
+  ExternalUrlAvatarProvider(@CanonicalWebUrl @Nullable String canonicalUrl,
+		  @GerritServerConfig Config cfg) {
+    externalAvatarUrl = cfg.getString("avatar", null, "url");
+    avatarChangeUrl = cfg.getString("avatar", null, "changeUrl");
+    ssl = canonicalUrl != null && canonicalUrl.startsWith("https://");
+  }
+
+  @Override
+  public String getUrl(IdentifiedUser forUser, int imageSize) {
+    String username = forUser.getUserName();
+
+    if (username == null) {
+      return null;
+    }
+
+    if (externalAvatarUrl == null) {
+      Logger log = LoggerFactory.getLogger(ExternalUrlAvatarProvider.class);
+      log.warn("Avatar URL is not configured, cannot show avatars. Please configure avatar.url in etc/gerrit.config");
+      return null;
+    }
+
+    if (!externalAvatarUrl.contains("%s")) {
+        Logger log = LoggerFactory.getLogger(ExternalUrlAvatarProvider.class);
+        log.warn("Avatar provider url '" + externalAvatarUrl + "' does not contain %s, so cannot replace it with username");
+        return null;
+    }
+
+    if (ssl && externalAvatarUrl.startsWith("http://")) {
+    	externalAvatarUrl = externalAvatarUrl.replace("http://", "https://");
+    }
+
+    // replace the %s inside the URL with the username
+    String url = String.format(externalAvatarUrl, username);
+
+    return url;
+  }
+
+  @Override
+  public String getChangeAvatarUrl(IdentifiedUser forUser) {
+    return avatarChangeUrl;
+  }
+}
diff --git a/src/main/resources/Documentation/config.md b/src/main/resources/Documentation/config.md
new file mode 100644
index 0000000..367af0e
--- /dev/null
+++ b/src/main/resources/Documentation/config.md
@@ -0,0 +1,18 @@
+External URL Avatar Plugin Configuration
+=========================
+
+This plugin allows to use an own web service to load the avatar images from.
+
+Options:
+
+* `avatar.url` - the location of avatar images containing `%s`, which will then be replaced by the `username`. Required.
+* `avatar.changeUrl` - the URL shown in Gerrit's user settings to tell the user, where the avatar can be changed. Optional. 
+
+Example (to be added to `etc/gerrit.config`):
+
+    [avatar]
+        url = http://example.org/avatars/%s.jpg
+        changeUrl = http://example.org/account.html
+
+Please note that `http://` URLs will be automatically rewritten to `https://`, if `gerrit.canonicalWebUrl` uses HTTPS. 
+        
\ No newline at end of file