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// Copyright 2008 Google Inc.
//
// 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.ssh;
import org.apache.sshd.server.CommandFactory;
import java.util.HashMap;
/** Creates a command implementation based on the client input. */
class GerritCommandFactory implements CommandFactory {
private final HashMap<String, Factory> commands;
GerritCommandFactory() {
commands = new HashMap<String, Factory>();
commands.put("gerrit-upload-pack", new Factory() {
public AbstractCommand create() {
return new Upload();
}
});
commands.put("gerrit-receive-pack", new Factory() {
public AbstractCommand create() {
return new Receive();
}
});
commands.put("gerrit-flush-caches", new Factory() {
public AbstractCommand create() {
return new AdminFlushCaches();
}
});
commands.put("gerrit-ls-projects", new Factory() {
public AbstractCommand create() {
return new ListProjects();
}
});
alias("gerrit-upload-pack", "git-upload-pack");
alias("gerrit-receive-pack", "git-receive-pack");
}
private void alias(final String from, final String to) {
commands.put(to, commands.get(from));
}
public Command createCommand(final String commandLine) {
final int sp1 = commandLine.indexOf(' ');
String cmd, args;
if (0 < sp1) {
cmd = commandLine.substring(0, sp1);
args = commandLine.substring(sp1 + 1);
} else {
cmd = commandLine;
args = "";
}
// Support newer-style "git receive-pack" requests by converting
// to the older-style "git-receive-pack".
//
if ("git".equals(cmd) || "gerrit".equals(cmd)) {
cmd += "-";
final int sp2 = args.indexOf(' ');
if (0 < sp2) {
cmd += args.substring(0, sp2);
args = args.substring(sp2 + 1);
} else {
cmd += args;
args = "";
}
}
final AbstractCommand c = create(cmd);
c.parseArguments(cmd, args);
return c;
}
private AbstractCommand create(final String cmd) {
final Factory f = commands.get(cmd);
if (f != null) {
return f.create();
}
return new AbstractCommand() {
@Override
protected void run(final String[] argv) throws Failure {
throw new Failure(127, "gerrit: " + getName() + ": not found");
}
};
}
protected static interface Factory {
AbstractCommand create();
}
}
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