Implement command line support for CredentialsProvider

Instead of configuring the JSch session factory, configure a more
generic CredentialsProvider, which will work for other transport
types such as http, in addition to the existing ssh.

Change-Id: I22b13303c17e654ba6720edf4be2ef15fe29537a
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

3 files changed, 177 insertions, 146 deletions

diff --git a/org.eclipse.jgit.console/META-INF/MANIFEST.MF b/org.eclipse.jgit.console/META-INF/MANIFEST.MF
index a29b348b0e..9607bdc160 100644
--- a/org.eclipse.jgit.console/META-INF/MANIFEST.MF
+++ b/org.eclipse.jgit.console/META-INF/MANIFEST.MF
@@ -7,7 +7,8 @@ Bundle-Version: 0.10.0.qualifier
 Bundle-Vendor: %provider_name
 Bundle-RequiredExecutionEnvironment: JavaSE-1.6
 Export-Package: org.eclipse.jgit.console;version="0.10.0"
-Import-Package: org.eclipse.jgit.nls;version="[0.10.0,0.11.0)",
+Import-Package: org.eclipse.jgit.errors;version="[0.10.0,0.11.0)",
+ org.eclipse.jgit.nls;version="[0.10.0,0.11.0)",
  org.eclipse.jgit.transport;version="[0.10.0,0.11.0)",
  org.eclipse.jgit.util;version="[0.10.0,0.11.0)"
 Require-Bundle: com.jcraft.jsch;bundle-version="[0.1.37,0.2.0)"
diff --git a/org.eclipse.jgit.console/src/org/eclipse/jgit/console/ConsoleCredentialsProvider.java b/org.eclipse.jgit.console/src/org/eclipse/jgit/console/ConsoleCredentialsProvider.java
new file mode 100644
index 0000000000..f8f8ff9bcf
--- /dev/null
+++ b/org.eclipse.jgit.console/src/org/eclipse/jgit/console/ConsoleCredentialsProvider.java
@@ -0,0 +1,175 @@
+/*
+ * Copyright (C) 2010, Google Inc.
+ * Copyright (C) 2008, Robin Rosenberg <robin.rosenberg@dewire.com>
+ * Copyright (C) 2008, Shawn O. Pearce <spearce@spearce.org>
+ * and other copyright owners as documented in the project's IP log.
+ *
+ * This program and the accompanying materials are made available
+ * under the terms of the Eclipse Distribution License v1.0 which
+ * accompanies this distribution, is reproduced below, and is
+ * available at http://www.eclipse.org/org/documents/edl-v10.php
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ *
+ * - Neither the name of the Eclipse Foundation, Inc. nor the
+ *   names of its contributors may be used to endorse or promote
+ *   products derived from this software without specific prior
+ *   written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package org.eclipse.jgit.console;
+
+import java.io.Console;
+
+import org.eclipse.jgit.errors.UnsupportedCredentialItem;
+import org.eclipse.jgit.transport.CredentialItem;
+import org.eclipse.jgit.transport.CredentialsProvider;
+import org.eclipse.jgit.transport.URIish;
+
+/** Interacts with the user during authentication by using the text console. */
+public class ConsoleCredentialsProvider extends CredentialsProvider {
+	/** Install this implementation as the default. */
+	public static void install() {
+		final ConsoleCredentialsProvider c = new ConsoleCredentialsProvider();
+		if (c.cons == null)
+			throw new NoClassDefFoundError(
+					ConsoleText.get().noSystemConsoleAvailable);
+		CredentialsProvider.setDefault(c);
+	}
+
+	private final Console cons = System.console();
+
+	@Override
+	public boolean isInteractive() {
+		return true;
+	}
+
+	@Override
+	public boolean supports(CredentialItem... items) {
+		for (CredentialItem i : items) {
+			if (i instanceof CredentialItem.StringType)
+				continue;
+
+			else if (i instanceof CredentialItem.CharArrayType)
+				continue;
+
+			else if (i instanceof CredentialItem.YesNoType)
+				continue;
+
+			else if (i instanceof CredentialItem.InformationalMessage)
+				continue;
+
+			else
+				return false;
+		}
+		return true;
+	}
+
+	@Override
+	public boolean get(URIish uri, CredentialItem... items)
+			throws UnsupportedCredentialItem {
+		boolean ok = true;
+		for (int i = 0; i < items.length && ok; i++) {
+			CredentialItem item = items[i];
+
+			if (item instanceof CredentialItem.StringType)
+				ok = get(uri, (CredentialItem.StringType) item);
+
+			else if (item instanceof CredentialItem.CharArrayType)
+				ok = get(uri, (CredentialItem.CharArrayType) item);
+
+			else if (item instanceof CredentialItem.YesNoType)
+				ok = get(uri, (CredentialItem.YesNoType) item);
+
+			else if (item instanceof CredentialItem.InformationalMessage)
+				ok = get(uri, (CredentialItem.InformationalMessage) item);
+
+			else
+				throw new UnsupportedCredentialItem(uri, item.getPromptText());
+		}
+		return ok;
+	}
+
+	private boolean get(URIish uri, CredentialItem.StringType item) {
+		if (item.isValueSecure()) {
+			char[] v = cons.readPassword("%s: ", item.getPromptText());
+			if (v != null) {
+				item.setValue(new String(v));
+				return true;
+			} else {
+				return false;
+			}
+		} else {
+			String v = cons.readLine("%s: ", item.getPromptText());
+			if (v != null) {
+				item.setValue(v);
+				return true;
+			} else {
+				return false;
+			}
+		}
+	}
+
+	private boolean get(URIish uri, CredentialItem.CharArrayType item) {
+		if (item.isValueSecure()) {
+			char[] v = cons.readPassword("%s: ", item.getPromptText());
+			if (v != null) {
+				item.setValueNoCopy(v);
+				return true;
+			} else {
+				return false;
+			}
+		} else {
+			String v = cons.readLine("%s: ", item.getPromptText());
+			if (v != null) {
+				item.setValueNoCopy(v.toCharArray());
+				return true;
+			} else {
+				return false;
+			}
+		}
+	}
+
+	private boolean get(URIish uri, CredentialItem.InformationalMessage item) {
+		cons.printf("%s\n", item.getPromptText());
+		cons.flush();
+		return true;
+	}
+
+	private boolean get(URIish uri, CredentialItem.YesNoType item) {
+		String r = cons.readLine("%s [%s/%s]? ", item.getPromptText(),
+				ConsoleText.get().answerYes, ConsoleText.get().answerNo);
+		if (r != null) {
+			item.setValue(ConsoleText.get().answerYes.equalsIgnoreCase(r));
+			return true;
+		} else {
+			return false;
+		}
+	}
+}
diff --git a/org.eclipse.jgit.console/src/org/eclipse/jgit/console/ConsoleSshSessionFactory.java b/org.eclipse.jgit.console/src/org/eclipse/jgit/console/ConsoleSshSessionFactory.java
deleted file mode 100644
index b11078dea8..0000000000
--- a/org.eclipse.jgit.console/src/org/eclipse/jgit/console/ConsoleSshSessionFactory.java
+++ /dev/null
@@ -1,145 +0,0 @@
-/*
- * Copyright (C) 2009, Google Inc.
- * Copyright (C) 2008, Robin Rosenberg <robin.rosenberg@dewire.com>
- * Copyright (C) 2008, Shawn O. Pearce <spearce@spearce.org>
- * and other copyright owners as documented in the project's IP log.
- *
- * This program and the accompanying materials are made available
- * under the terms of the Eclipse Distribution License v1.0 which
- * accompanies this distribution, is reproduced below, and is
- * available at http://www.eclipse.org/org/documents/edl-v10.php
- *
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or
- * without modification, are permitted provided that the following
- * conditions are met:
- *
- * - Redistributions of source code must retain the above copyright
- *   notice, this list of conditions and the following disclaimer.
- *
- * - Redistributions in binary form must reproduce the above
- *   copyright notice, this list of conditions and the following
- *   disclaimer in the documentation and/or other materials provided
- *   with the distribution.
- *
- * - Neither the name of the Eclipse Foundation, Inc. nor the
- *   names of its contributors may be used to endorse or promote
- *   products derived from this software without specific prior
- *   written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
- * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-package org.eclipse.jgit.console;
-
-import java.io.Console;
-
-import org.eclipse.jgit.transport.OpenSshConfig;
-import org.eclipse.jgit.transport.SshConfigSessionFactory;
-import org.eclipse.jgit.transport.SshSessionFactory;
-
-import com.jcraft.jsch.Session;
-import com.jcraft.jsch.UIKeyboardInteractive;
-import com.jcraft.jsch.UserInfo;
-
-/**
- * Loads known hosts and private keys from <code>$HOME/.ssh</code>.
- * <p>
- * This is the default implementation used by JGit and provides most of the
- * compatibility necessary to match OpenSSH, a popular implementation of SSH
- * used by C Git.
- * <p>
- * If user interactivity is required by SSH (e.g. to obtain a password) the
- * system console is used to display a prompt to the end-user.
- */
-public class ConsoleSshSessionFactory extends SshConfigSessionFactory {
-	/** Install this session factory implementation into the JVM. */
-	public static void install() {
-		final ConsoleSshSessionFactory c = new ConsoleSshSessionFactory();
-		if (c.cons == null)
-			throw new NoClassDefFoundError(ConsoleText.get().noSystemConsoleAvailable);
-		SshSessionFactory.setInstance(c);
-	}
-
-	private final Console cons = System.console();
-
-	@Override
-	protected void configure(final OpenSshConfig.Host hc, final Session session) {
-		if (!hc.isBatchMode())
-			session.setUserInfo(new ConsoleUserInfo());
-	}
-
-	private class ConsoleUserInfo implements UserInfo, UIKeyboardInteractive {
-		private String passwd;
-
-		private String passphrase;
-
-		public void showMessage(final String msg) {
-			cons.printf("%s\n", msg);
-			cons.flush();
-		}
-
-		public boolean promptYesNo(final String msg) {
-			String r = cons.readLine("%s [%s/%s]? ", msg, ConsoleText.get().answerYes, ConsoleText.get().answerNo);
-			return ConsoleText.get().answerYes.equalsIgnoreCase(r);
-		}
-
-		public boolean promptPassword(final String msg) {
-			passwd = null;
-			char[] p = cons.readPassword("%s: ", msg);
-			if (p != null) {
-				passwd = new String(p);
-				return true;
-			}
-			return false;
-		}
-
-		public boolean promptPassphrase(final String msg) {
-			passphrase = null;
-			char[] p = cons.readPassword("%s: ", msg);
-			if (p != null) {
-				passphrase = new String(p);
-				return true;
-			}
-			return false;
-		}
-
-		public String getPassword() {
-			return passwd;
-		}
-
-		public String getPassphrase() {
-			return passphrase;
-		}
-
-		public String[] promptKeyboardInteractive(final String destination,
-				final String name, final String instruction,
-				final String[] prompt, final boolean[] echo) {
-			cons.printf("%s: %s\n", destination, name);
-			cons.printf("%s\n", instruction);
-			final String[] response = new String[prompt.length];
-			for (int i = 0; i < prompt.length; i++) {
-				if (echo[i]) {
-					response[i] = cons.readLine("%s: ", prompt[i]);
-				} else {
-					final char[] p = cons.readPassword("%s: ", prompt[i]);
-					response[i] = p != null ? new String(p) : "";
-				}
-			}
-			return response;
-		}
-	}
-}