Add support for git-receive-pack to the ssh git server and add two
new tests for pushing.

This actually uncovered an undocumented requirement in TransportSftp:
the FTP rename operation assumes POSIX semantics, i.e., that the
target is removed. This works as written only for servers that
support and advertise the "posix-rename@openssh.com" FTP extension.

Our little Apache MINA server does not advertise this extension.

Fix the FtpChannel implementation for Jsch to handle this case in a
meaningful way so that it can pass the new "push over sftp" test.

Add more tests to test the behavior of server host key checking.

Also refactor the tests generally to separate better the test
framework from the actual tests.

Bug: 520927
Change-Id: Ia4bb85e17ddacde7b36ee8c2d5d454bbfa66dfc3
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>

Introduce an FtpChannel abstraction, which can be obtained from a
RemoteSession. In JSchSession, wrap a JSch ChannelSftp as such an
FtpChannel. The JSch-specific SftpException is also mapped to a
generic FtpException. Rewrite TransportSftp to use only the new
abstraction layer.

This makes it possible to provide alternate ssh/sftp implementations.

Bug: 520927
Change-Id: I379026f7d4122f34931df909a28e73c02cd8a1da
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>

Remove it from

 * package private functions.

 * try blocks

 * for loops

this was done with the following python script:

$ cat f.py
import sys
import re
import os

def replaceFinal(m):
  return m.group(1) + "(" +  m.group(2).replace('final ', '') + ")"

methodDecl = re.compile(r"^([\t ]*[a-zA-Z_ ]+)\(([^)]*)\)")

def subst(fn):
  input = open(fn)
  os.rename(fn, fn + "~")

  dest = open(fn, 'w')
  for l in input:
    l = methodDecl.sub(replaceFinal, l)
    dest.write(l)
  dest.close()


for root, dirs, files in os.walk(".", topdown=False):
  for f in files:
    if not f.endswith('.java'):
      continue

    full = os.path.join(root, f)
    print full
    subst(full)

Change-Id: If533a75a417594fc893e7c669d2c1f0f6caeb7ca
Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>

Change-Id: Id924f79c8b2c720297ebc49bf9c5d4ddd6d52547
Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>

Change-Id: Id70e2c27e38bf12f87e66b28fbd0b06908494764
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>

Bug: 513554
Change-Id: I065836b8fc77ade6de92e4a809fcf770a4f793ec
Signed-off-by: Dmitry Neverov <dmitry.neverov@gmail.com>

Change-Id: Iead36f53d57ead0eb3edd3f9efb63b6630c9c20c
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>

Set missingOverrideAnnotation=warning in Eclipse compiler preferences
which enables the warning:

  The method <method> of type <type> should be tagged with @Override
  since it actually overrides a superclass method

Justification for this warning is described in:

  http://stackoverflow.com/a/94411/381622

Enabling this causes in excess of 1000 warnings across the entire
code-base. They are very easy to fix automatically with Eclipse's
"Quick Fix" tool.

Fix all of them except 2 which cause compilation failure when the
project is built with mvn; add TODO comments on those for further
investigation.

Change-Id: I5772061041fd361fe93137fd8b0ad356e748a29c
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>

Work around issues with JSch not handling interrupts by
isolating the JSch interactions onto another thread.

Run write and flush on a single threaded Executor using
simple Callable operations wrapping the method calls,
waiting on the future to determine the outcome before
allowing the caller to continue.

If any operation was interrupted the state of the stream
becomes fuzzy at close time. The implementation tries to
interrupt the pending write or flush, but this is very
likely to corrupt the stream object, so exceptions are
ignored during such a dirty close.

Change-Id: I42e3ba3d8c35a2e40aad340580037ebefbb99b53

Bug: 484775
Change-Id: I3c7105188e615b6b994261f4ece0c8abc98eb444
Signed-off-by: Dmitry Neverov <dmitry.neverov@gmail.com>

Java compiler must generate synthetic access methods for private methods
and fields of the enclosing class if they are accessed from inner
classes and vice versa.

While invisible in the code, those synthetic access methods exist in the
bytecode and seem to produce some extra execution overhead at runtime
(compared with the direct access to this fields or methods), see
https://git.eclipse.org/r/58948/.

By removing the "private" access modifier from affected methods and
fields we help compiler to avoid generation of synthetic access methods
and hope to improve execution performance.

To validate changes, one can either use javap or use Bytecode Outline
plugin in Eclipse. In both cases one should look for "synthetic
access$<number>" methods at the end of the class and inner class files
in question - there should be none.

NB: don't mix this "synthetic access$" methods up with "public synthetic
bridge" methods generated to allow generic method override return types.

Change-Id: I0ebaeb2bc454cd8051b901addb102c1a6688688b
Signed-off-by: Andrey Loskutov <loskutov@gmx.de>

Change-Id: Ibf4c299f9d203c78cae79e61f88d4bea60ea2795
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>

A few classes such as Constanrs are marked with @SuppressWarnings, as are
toString() methods with many liternal, but otherwise $NLS-n$ is used for
string containing text that should not be translated. A few literals may
fall into the gray zone, but mostly I've tried to only tag the obvious
ones.

Change-Id: I22e50a77e2bf9e0b842a66bdf674e8fa1692f590

The RemoteSession interface operates like a simplified version of
java.lang.Runtime with a single exec method (and a disconnect
method). It returns a java.lang.Process, which should begin execution
immediately. Note that this greatly simplifies the interface for
running commands. There is no longer a connect method, and most
implementations will contain the bulk of their code inside
Process.exec, or a constructor called by Process.exec. (See the
revised implementations of JschSession and ExtSession.)
Implementations can now configure their connections properly without
either ignoring the proper use of the interface or trying to adhere
to an overly strict interface with odd rules about what methods are
called first.  For example, Jsch needs to create the output stream
before executing, which it now does in the process constructor. These
changes should make it much easier to add alternate session
implementations in the future.

Also-by: John D Eblen <jdeblen@comcast.net>
Bug: 336749
CQ: 5004
Change-Id: Iece43632086afadf175af6638255041ccaf2bfbb
Signed-off-by: Chris Aniszczyk <caniszczyk@gmail.com>