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// Copyright (C) 2009 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.google.gerrit.server.config;
import com.google.gerrit.common.auth.openid.OpenIdProviderPattern;
import com.google.gerrit.reviewdb.client.AccountExternalId;
import com.google.gerrit.reviewdb.client.AuthType;
import com.google.gwtjsonrpc.server.SignedToken;
import com.google.gwtjsonrpc.server.XsrfException;
import com.google.inject.Inject;
import com.google.inject.Singleton;
import org.eclipse.jgit.lib.Config;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.concurrent.TimeUnit;
/** Authentication related settings from {@code gerrit.config}. */
@Singleton
public class AuthConfig {
private final AuthType authType;
private final String httpHeader;
private final boolean trustContainerAuth;
private final String logoutUrl;
private final List<OpenIdProviderPattern> trustedOpenIDs;
private final List<OpenIdProviderPattern> allowedOpenIDs;
private final String cookiePath;
private final boolean cookieSecure;
private final SignedToken emailReg;
private final boolean allowGoogleAccountUpgrade;
@Inject
AuthConfig(@GerritServerConfig final Config cfg)
throws XsrfException {
authType = toType(cfg);
httpHeader = cfg.getString("auth", null, "httpheader");
logoutUrl = cfg.getString("auth", null, "logouturl");
trustedOpenIDs = toPatterns(cfg, "trustedOpenID");
allowedOpenIDs = toPatterns(cfg, "allowedOpenID");
cookiePath = cfg.getString("auth", null, "cookiepath");
cookieSecure = cfg.getBoolean("auth", "cookiesecure", false);
trustContainerAuth = cfg.getBoolean("auth", "trustContainerAuth", false);
String key = cfg.getString("auth", null, "registerEmailPrivateKey");
if (key != null && !key.isEmpty()) {
int age = (int) ConfigUtil.getTimeUnit(cfg,
"auth", null, "maxRegisterEmailTokenAge",
TimeUnit.SECONDS.convert(12, TimeUnit.HOURS),
TimeUnit.SECONDS);
emailReg = new SignedToken(age, key);
} else {
emailReg = null;
}
if (authType == AuthType.OPENID) {
allowGoogleAccountUpgrade =
cfg.getBoolean("auth", "allowgoogleaccountupgrade", false);
} else {
allowGoogleAccountUpgrade = false;
}
}
private static List<OpenIdProviderPattern> toPatterns(Config cfg, String name) {
String[] s = cfg.getStringList("auth", null, name);
if (s.length == 0) {
s = new String[] {"http://", "https://"};
}
List<OpenIdProviderPattern> r = new ArrayList<OpenIdProviderPattern>();
for (String pattern : s) {
r.add(OpenIdProviderPattern.create(pattern));
}
return Collections.unmodifiableList(r);
}
private static AuthType toType(final Config cfg) {
return ConfigUtil.getEnum(cfg, "auth", null, "type", AuthType.OPENID);
}
/** Type of user authentication used by this Gerrit server. */
public AuthType getAuthType() {
return authType;
}
public String getLoginHttpHeader() {
return httpHeader;
}
public String getLogoutURL() {
return logoutUrl;
}
public String getCookiePath() {
return cookiePath;
}
public boolean getCookieSecure() {
return cookieSecure;
}
public SignedToken getEmailRegistrationToken() {
return emailReg;
}
public boolean isAllowGoogleAccountUpgrade() {
return allowGoogleAccountUpgrade;
}
/** OpenID identities which the server permits for authentication. */
public List<OpenIdProviderPattern> getAllowedOpenIDs() {
return allowedOpenIDs;
}
/** Whether git-over-http should trust authentication done by container. */
public boolean isTrustContainerAuth() {
return trustContainerAuth;
}
public boolean isIdentityTrustable(final Collection<AccountExternalId> ids) {
switch (getAuthType()) {
case DEVELOPMENT_BECOME_ANY_ACCOUNT:
case HTTP:
case HTTP_LDAP:
case LDAP:
case LDAP_BIND:
case CLIENT_SSL_CERT_LDAP:
case CUSTOM_EXTENSION:
// Its safe to assume yes for an HTTP authentication type, as the
// only way in is through some external system that the admin trusts
//
return true;
case OPENID:
// All identities must be trusted in order to trust the account.
//
for (final AccountExternalId e : ids) {
if (!isTrusted(e)) {
return false;
}
}
return true;
default:
// Assume not, we don't understand the login format.
//
return false;
}
}
private boolean isTrusted(final AccountExternalId id) {
if (id.isScheme(AccountExternalId.LEGACY_GAE)) {
// Assume this is a trusted token, its a legacy import from
// a fairly well respected provider and only takes effect if
// the administrator has the import still enabled
//
return isAllowGoogleAccountUpgrade();
}
if (id.isScheme(AccountExternalId.SCHEME_MAILTO)) {
// mailto identities are created by sending a unique validation
// token to the address and asking them to come back to the site
// with that token.
//
return true;
}
if (id.isScheme(AccountExternalId.SCHEME_UUID)) {
// UUID identities are absolutely meaningless and cannot be
// constructed through any normal login process we use.
//
return true;
}
if (id.isScheme(AccountExternalId.SCHEME_USERNAME)) {
// We can trust their username, its local to our server only.
//
return true;
}
for (final OpenIdProviderPattern p : trustedOpenIDs) {
if (p.matches(id)) {
return true;
}
}
return false;
}
}
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