Ssh session flags (#224)

* Added libssh2 session flag constants.
* Added Session.flag function for adding flags.
* Updated changelog.
* Added tests for session flags.
* Added CI integration test for executing with session compression enabled.
* Updated embedded zlib to latest version.
* Updated appveyor zlib build script.

Author: pkittenis

Changelog.rst

@@ -1,6 +1,16 @@
 Change Log
 =============
 
+1.2.0
+++++++
+
+Changes
+--------
+
+* Added constants for session related flags under `ssh2.session`.
+* Added `ssh2.session.Session.flag` function for enabling/disabling session flags like compression support.
+
+
 1.1.2
 ++++++
 

ci/appveyor/build_zlib.bat

@@ -2,7 +2,7 @@ IF "%PYTHON_VERSION%" == "2.7" (exit 0)
 
 mkdir zlib_build && cd zlib_build
 
-cmake ..\zlib-1.2.11                             ^
+cmake ..\zlib-1.3.1                              ^
     -A x64                                       ^
     -DCMAKE_INSTALL_PREFIX="C:\zlib"             ^
     -DCMAKE_BUILD_TYPE=Release                   ^

ci/integration_tests/test_channel.py

@@ -1,9 +1,13 @@
 import os
+import socket
 from subprocess import check_output
 from unittest import skipUnless
 
+
+from ssh2.session import Session
 from ssh2.channel import Channel
 from ssh2.exceptions import SocketSendError
+from ssh2.session import LIBSSH2_METHOD_COMP_CS, LIBSSH2_FLAG_COMPRESS
 
 from .base_test import SSH2TestCase
 
@@ -193,3 +197,20 @@ def test_multi_execute(self):
         self.assertTrue(chan.execute(self.cmd) == 0)
         size, data = chan.read()
         self.assertTrue(size > 0)
+
+    def test_execute_with_session_compression(self):
+        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+        sock.connect((self.host, self.port))
+        session = Session()
+        session.flag(LIBSSH2_FLAG_COMPRESS)
+        algs = session.supported_algs(LIBSSH2_METHOD_COMP_CS)
+        self.assertTrue('zlib' in algs)
+        session.handshake(sock)
+        session.userauth_publickey_fromfile(
+            self.user, self.user_key)
+        chan = session.open_session()
+        self.assertTrue(chan is not None)
+        self.assertTrue(chan.execute(self.cmd) == 0)
+        size, data = chan.read()
+        lines = [line.decode('utf-8') for line in data.splitlines()]
+        self.assertTrue(lines, [self.resp])

setup.py

@@ -99,9 +99,10 @@
     version=versioneer.get_version(),
     cmdclass=cmdclass,
     url='https://github.com/ParallelSSH/ssh2-python',
-    license='LGPLv2',
+    license='LGPL-2.1-only',
+    license_files=['LICENSE', 'COPYING'],
     author='Panos Kittenis',
-    author_email='22e889d8@opayq.com',
+    author_email='danst@tutanota.com',
     description='Bindings for libssh2 C library',
     long_description=open('README.rst').read(),
     packages=find_packages(
@@ -113,7 +114,6 @@
     platforms='any',
     classifiers=[
         'Development Status :: 5 - Production/Stable',
-        'License :: OSI Approved :: GNU Lesser General Public License v2 (LGPLv2)',
         'Intended Audience :: Developers',
         'Operating System :: OS Independent',
         'Programming Language :: C',
@@ -124,6 +124,7 @@
         'Programming Language :: Python :: 3.10',
         'Programming Language :: Python :: 3.11',
         'Programming Language :: Python :: 3.12',
+        'Programming Language :: Python :: 3.13',
         'Topic :: System :: Shells',
         'Topic :: System :: Networking',
         'Topic :: Software Development :: Libraries',