Commit Graph

56 Commits (7cda052bacfa63ff2bbe1f450986101e2d3e76e6)

Author SHA1 Message Date
Ray 7cda052bac Release 1.2.3
* dtls/wrapper.py: Add optional parameter to DtlsSocket:
    client_timeout (seconds). If client_timeout is specified,
    clients that have not communicated within the time frame
    will be dropped.
  * setup.py: Version incremented to 1.2.3
  * dtls/__init__.py: Increment version
2017-04-27 13:53:12 -07:00
Jason Youzwak 80d05b7d82 Add optional parameter to DtlsSocket: client_timeout (seconds)
If client_timeout is specified, clients that have not communicated
within the time frame will be dropped.
2017-04-26 20:04:45 -04:00
Ray 0d6ee12121 Release 1.2.2
Produce a Pure Python Wheel instead of a source distribution for Linux.
This speeds up installation and simplifies distribution building.

	* setup.py: Drop support for sdist; add support for bdist_wheel
    without --plat-name switch; persist README.rst; increment version
	* dtls/__init__.py: Increment version
2017-04-10 17:54:29 -07:00
Ray 0525a1e8b7 Merge branch 'incoming' 2017-04-07 14:13:09 -07:00
Ray 8ec1dfb56c Installation Fixes and Improvements
Installation as well as distribution generation are now simplified.
With the elimination of MinGW support there is now a unique set of
platform binaries for 32-bit and 64-bit Windows. Pip will now
automatically choose the proper binary wheel or the source
distribution, depending under which platform and Python version it
is being invoked.

	* README.md: add installation section
	* setup.py: rewrite to use bdist_wheel for Windows
2017-04-07 13:53:48 -07:00
Ray 2045cbea71 Merge branch 'incoming' 2017-04-03 16:00:40 -07:00
Ray 9bf91c202a Release 1.2.0
* README.md: Release updates
2017-04-03 15:41:47 -07:00
Ray 7a84c71e80 Release 1.2.0 Preparation
* README.txt -> README.md: renamed
	* dtls/sslconnection.py: Reduce the default MTU in effect while
    handshaking to 576, suitable for various path MTUs and PPPoE
	* dtls/prebuilt/win32-x86[_64]: Rebuilt with Visual C++ 2008 to
    eliminate requirement to install a C++ redistributable package
	* dtls/prebuilt/mingw-x86: mingw support is deprecated
	* dtls/__init__.py: VERSION introduced
	* setup.py: Version incremented to 1.2.0
2017-04-03 14:52:50 -07:00
Ray 343e243384 Merge branch 'mcfreis-clean-redo-in-steps' into incoming 2017-04-02 20:05:01 -07:00
Ray Brown f20055796c Merge pull request #4 from mcfreis/master
Workaround for Windows concerning the MTU size
2017-04-02 19:22:50 -07:00
mcfreis 8716df8ead Workaround for Windows concerning the MTU size
* dtls/sslconnection.py: Hardcoded setting of the MTU size only for Windows and in case it is not already configured
* dtls/test/unit_wrapper.py: No user config of the MTU size; using the hardcoded one from SSLConnection
2017-03-30 08:42:26 +02:00
mcfreis 129fd349df Merge remote-tracking branch 'refs/remotes/origin/master' into clean-redo-in-steps 2017-03-28 08:04:57 +02:00
mcfreis 083554e9e0 Minor fixes and "hopefully" compatible to Ubuntu 16.04
* dtls/__init__.py: Removed wrapper import
* dtls/openssl.py: Fixed line endings to LF
* dtls/patch.py: Removed PROTOCOL_SSLv3 import and fixed line endings to LF
* dtls/sslconnection.py: Fixed line endings to LF
* dtls/test/certs/*_ec.pem: Fixed line endings to LF
* dtls/test/echo_seq.py: Fixed line endings to LF
* dtls/test/simple_client.py: Fixed line endings to LF
* dtls/test/unit.py: Fixed line endings to LF
* dtls/test/unit_wrapper.py: Corrected wrapper import and fixed line endings to LF
* dtls/util.py: Fixed line endings to LF
* dtls/wrapper.py: Corrected function naming to wrap_client() and wrap_server(); Fixed line endings to LF
* dtls/x509.py: Fixed line endings to LF
2017-03-28 07:59:03 +02:00
mcfreis 418655bed0 Merge pull request #3 from mcfreis/master
Update "Patched ssl-Module with SSL_BUILD_*- and ERR_*- constants and added aliases for wrap_server() and wrap_client()"
2017-03-23 14:14:33 +01:00
mcfreis dade3b8213 Patched ssl-Module with SSL_BUILD_*- and ERR_*- constants and added aliases for wrap_server() and wrap_client()
* dtls/__init__.py: Added DtlsSocket() from wrapper and aliases for wrap_server() and wrap_client()
* dtls/err.py: Added patch_ssl_errors() to patch ssl-Module with ERR_* constants
* dtls/patch.py: Patched ssl-Module with SSL_BUILD_* constants and added call to patch_ssl_errors()
* dtls/wrapper.py:
	- Added a server and client function to alias/wrap DtlsSocket() creation
	- Cleanup of DtlsSocket.__init__()
	- Cleanup of exception handling in all member methods
	- Cleanup sendto() from client: no endless loop and first do a connect if not already connected
* dtls/test/unit_wrapper.py: Adopt the changes made described above
2017-03-23 14:08:20 +01:00
mcfreis d12b23ba9f Merge pull request #2 from mcfreis/clean-redo-in-steps
Merge "DTLSv1.2 methods and extensions added" from branch to master
2017-03-21 08:10:17 +01:00
mcfreis 84d2906a5e Revert "Added supoort for EC-Functions and DTLSv1.2 (Updated OpenSSL-Lib to V1.0.2j)"
This reverts commit 5776e38445.
2017-03-21 08:07:53 +01:00
mcfreis 26634280a5 Added a wrapper for a DTLS-Socket either as client or server - including unit tests
* dtls/__init__.py: Import SSLContext() and SSL() for external use
* dtls/wrapper.py: Added class DtlsSocket() to be used as client or server
* dtls/test/unit_wrapper.py: unit test for DtlsSocket()
2017-03-20 16:53:55 +01:00
mcfreis ff509e0724 Added more on error evaluation and a method to get the peer certificate chain
* dtls/__init__.py: import error codes from err.py as error_codes for external access
* dtls/err.py: Added errors for ERR_WRONG_SSL_VERSION, ERR_CERTIFICATE_VERIFY_FAILED, ERR_NO_SHARED_CIPHER and ERR_SSL_HANDSHAKE_FAILURE
* dtls/openssl.py:
	- Added constant SSL_BUILD_CHAIN_FLAG_NONE for SSL_CTX_build_cert_chain()
	- Added method SSL_get_peer_cert_chain()
* dtls/patch.py: Added getpeercertchain() as method to ssl.SSLSocket()
* dtls/sslconnection.py:
	- Bugfix SSLContext.set_ecdh_curve() returns 1 for success and 0 for failure
	- SSLContext.build_cert_chain() changed default flags to SSL_BUILD_CHAIN_FLAG_NONE
	- In SSLConnection() the mtu size gets only set if no user config function is given
	- SSLConnection.listen() raises an exception for ERR_WRONG_VERSION_NUMBER, ERR_COOKIE_MISMATCH, ERR_NO_SHARED_CIPHER and all other unknown errors
	- SSLConnection.read() and write() now can also raise ERR_PORT_UNREACHABLE
	- If SSLConnection.write() successfully writes bytes to the peer, then the handshake is assumed to be okay
	- Added method SSLConnection.getpeercertchain()
* dtls/test/unit.py: ThreadedEchoServer() with an extra exception branch for the newly raised exceptions in SSLConnection.listen()
2017-03-20 16:39:50 +01:00
mcfreis 13edf48fdf Added certificate creation using ECDSA
* dtls/test/makecerts_ec.bat: creates ca-cert_ec.pem, keycert_ec.pem and server-cert_ec.pem
* dtls/test/openssl_ca.cnf and openssl_server.cnf: Added HOME to be able to use the conf file under windows
2017-03-20 16:08:11 +01:00
mcfreis 60f76fac83 Added an interface in SSLConnection() to access SSLContext() and SSL() for manipulating settings during creation
* dtls/openssl.py:
	- Added utility fucntions EC_curve_nist2nid() and EC_curve_nid2nist()
* dtls/patch.py:
	- Extended wrap_socket() arguments with callbacks for user config functions of ssl context and ssl session values
	- Extended SSLSocket() arguments with callbacks for user config functions of ssl context and ssl session values
* dtls/sslconnection.py:
	- Extended SSLConnection() arguments with callbacks for user config functions of ssl context and ssl session values
	- During the init of client and server the corresponding user config functions are called (if given)
	- Added new classes SSLContext() [set_ciphers(), set_sigalgs(), set_curves(), set_ecdh_curve(), build_cert_chain(),
	set_ssl_logging()] and SSL() [set_mtu(), set_link_mtu()]
2017-03-20 16:00:11 +01:00
mcfreis f5b88155fd Added methods getting the curves supported by the runtime openSSL lib
* dtls/openssl.py:
	- Added class _EllipticCurve() for easy handling of the builtin curves
	- Added wrapper get_elliptic_curves() - which uses _EllipticCurve()
	- Added EC_get_builtin_curves(), EC_KEY_new_by_curve_name() and EC_KEY_free()
	- Added OBJ_nid2sn() for translating numeric ids to names
* dtls/util.py: Added _EC_KEY() derived from _Rsrc() with own free/del method
2017-03-20 15:15:14 +01:00
mcfreis 75a01ed528 Added methods for setting and getting the curves used during negotiation and encryption
* dtls/openssl.py:
	- Added SSL_CTX_set1_curves() and SSL_CTX_set1_curves_list()
	- Added SSL_CTX_set_ecdh_auto() and SSL_CTX_set_tmp_ecdh()
	- Added SSL_get1_curves(), SSL_get_shared_curve(), SSL_set1_curves() and SSL_set1_curves_list()
2017-03-20 15:09:18 +01:00
mcfreis 59391e401c Added methods for setting the signature algorithms
* dtls/openssl.py:
	- Added SSL_CTX_set1_client_sigalgs_list(), SSL_CTX_set1_client_sigalgs(), SSL_CTX_set1_sigalgs_list() and SSL_CTX_set1_sigalgs()
	- Added SSL_set1_client_sigalgs_list(), SSL_set1_client_sigalgs(), SSL_set1_sigalgs_list() and SSL_set1_sigalgs()
2017-03-20 14:57:42 +01:00
mcfreis c9b614b7e8 Added method SSL_CTX_build_cert_chain()
* dtls/openssl.py: Added SSL_CTX_build_cert_chain() and corresponding constants
2017-03-20 14:53:53 +01:00
mcfreis dd55dffb0c Added methods *_clear_options() and *_get_options()
* dtls/openssl.py:
	- Added SSL_CTX_clear_options() and SSL_CTX_get_options()
	- Added SSL_clear_options() and SSL_get_options()
2017-03-20 14:51:50 +01:00
mcfreis 83204e8c4d Added new methods for DTLSv1.2
* dtls/err.py: Added error code ERR_WRONG_VERSION_NUMBER
* dtls/openssl.py: Added DTLS_server_method(), DTLSv1_2_server_method() and DTLSv1_2_client_method()
* dtls/patch.py: Default protocol DTLS for ssl.wrap_socket() and ssl.SSLSocket()
* dtls/sslconnection.py:
	- Introduced PROTOCOL_DTLSv1_2 and PROTOCOL_DTLS (the latter one is a synonym for the "higher" version)
	- Updated _init_client() and _init_server() with the new protocol methods
	- Default protocol DTLS for SSLConnection()
	- Return on ERR_WRONG_VERSION_NUMBER if client and server cannot agree on protocol version
* dtls/test/unit.py:
	- Extended test_get_server_certificate() to iterate over the different protocol combinations
	- Extended test_protocol_dtlsv1() to try the different protocol combinations between client and server
2017-03-20 14:48:42 +01:00
mcfreis 8b07f3f46d Updating openSSL libs to v1.0.2l-dev
* dtls/openssl.py: Added mtu-functions SSL_set_mtu() and DTLS_set_link_mtu()
* dtls/prebuilt/win32-*: Updated libs for x86 and x86_64 to version 1.0.2l-dev
* dtls/sslconnection.py: mtu size set hardcoded to 1500 - otherwise the windows implementation has problems
2017-03-20 14:36:33 +01:00
mcfreis 70e78b97cb Added interface for SSL_CTX_set_info_callback()
* dtls/openssl.py:
	- Added methods SSL_CTX_set_info_callback(), SSL_state_string_long(), SSL_alert_type_string_long() and SSL_alert_desc_string_long()
	- Added constants for state and error evaluation during callback
* dtls/sslconnection.py: Added _ssl_logging_cb() as default callback function - only outputs messages when logger is active
2017-03-20 14:27:23 +01:00
mcfreis d601774e24 SSL_write() extended to handle ctypes.Array as data
* dtls/openssl.py: SSL_write() can handle ctypes.Array data
* dtls/sslconnection.py: Added missing import ERR_BOTH_KEY_CERT_FILES
* dtls/test/simple_client.py: Added basic test client to use with dtls/test/echo_seq.py
2017-03-20 14:19:02 +01:00
mcfreis b4911f4949 Beautified lists and maps, grouped imports for easy merges in the future - no changed functionality!
* dtls/openssl.py:
	- Ordered constants according to header file from openSSL
	- Beautified __all__-list and map for _make_function() in order to easy merges in the future
	- Added a few returns in order to evaluate the success of the called methods
* dtls/patch.py: Grouped imports in the following order - system, local
* dtls/sslconnection.py: ssl protocol not hardcoded anymore for forked objects
* dtls/x509.py: logger messages working again
2017-03-20 14:14:14 +01:00
mcfreis 1c7bdcad16 SSLError(): use errno with int-comparison instead of str().startswith()-comparison 2017-03-17 15:31:59 +01:00
mcfreis ba51e0bbcd Merge pull request #1 from rbit/master
Update to: Compatibility Updates for Python 2.7.12
2017-03-16 11:29:03 +01:00
Ray 622f58358e Compatibility Updates for Python 2.7.12
* dtls/openssl.py: support reading directly into given buffer instead
                     of forcing buffer copy (for ssl module compatibility)
	* dtls/sslconnection.py: in-situ receive support, as above
	* dtls/patch.py: various changes for compatibility with the ssl module
                   of Python 2.7.12; note that the ssl module's new
                   SSLContext is not supported
	* dtls/test/unit.py: changes to support the updated ssl module,
                       including fix of deprecation warnings
	* setup.py: increase version to 1.0.2
2017-02-27 22:37:50 -08:00
mcfreis 5776e38445 Added supoort for EC-Functions and DTLSv1.2 (Updated OpenSSL-Lib to V1.0.2j)
Attention: DLL updates for Win32 only! (Till now)
2017-02-21 14:48:13 +01:00
Ray 34dc9ca9cd Version rev after fix integration
Increase version to 1.0.1, in preparation for PyPI release. This release
includes a fix by Jayson Vantuyl to an error code import. A proper error
is now emitted when omitting the keyfile on a PyDTLS server.
2014-01-18 20:51:13 -08:00
Ray Brown 9be54ddd79 Merge pull request #4 from jvantuyl/master
fix missing error import
2014-01-18 20:40:21 -08:00
Ray 7a4919c839 First Stable Release
The version number is incremented to 1.0.0.

Thanks to doneir for reporting that a number of unit test were failing.
This was because two test certificates had expired. This commit replaces
these with updated certificates, along with the tool used for programmatic
certificate generation. The new certificates are set to remain valid for
approximately ten years.
2014-01-18 18:02:25 -08:00
Jayson Vantuyl 1736a029fb fix missing error import 2014-01-18 12:16:11 -08:00
Ray Brown 805cea0a0b Performance test port to Windows
This patch allows the module test_perf.py to be run on Windows. It
contains fixes primarily accounting for differences in the
implementation of the multiprocessing module among platforms.
2012-12-24 12:30:55 -08:00
Ray Brown f62462d5f8 External documentation
This patch completes the README.txt placeholder file. The first version of
external (as opposed to in-line) documentation is complete.

The unused file README.md that was created by the GitHub repository
establishment procedure is deleted.
2012-12-19 00:49:00 -08:00
Ray Brown 9add480710 Licensing
This project is now licensed under the Apache license. Individual files
now have a license reference header.

The Apache 2.0 license text is copied to the file LICENSE. The file
NOTICE, referred to in the license text, has been added. A placeholder
README.txt has been added.

These three new files are integrated into the distribution/installation
machinery, and are placed into the package directory upon installation.
2012-12-18 11:14:31 -08:00
Ray Brown 62f30a1888 Distribution and installation
The new module setup.py handles creation of package distributions in
compressed formats, and performs installation of said distributions
after decompression. Distribution strategy for PyDTLS is in the form
of source distributions only.

Building the OpenSSL library on Windows is non-trivial. Requirements
include linking against the same version of the C runtime that is used
by the Python interpreter, or else Microsoft redistributable
installation may also need to be performed. For the convenience of
Windows users, the distribution procedure includes creation of
prebuilt versions of the OpenSSL library for both 32- and 64-bit
versions of Windows. Despite containing binaries, these are still
source distributions that are installed with "python setup.py
install."

A version of OpenSSL compiled with the MinGW toolchain is included.
cygcrypto-1.0.0.dll and cygssl-1.0.0.dll contain symbols and can be
debugged with gdb. All MinGW OpenSSL dll's link with msvcr90.dll.

In order to avoid making installation a requirement after cloning, the
package initializer looks for prebuilts of the currently executing
platform and copies them into the dtls package directory before
continuing module initialization.

A distribution containing prebuilts for all platforms as well as those
containing no prebuilts (appropriate for Linux) can be generated by
issuing "python setup.py sdist --prebuilts."
2012-12-16 20:22:49 -08:00
Ray Brown 8800ffa238 Add fixed suite port command line option
When running in remote server mode (-s), the value of the -s option
specifies which port remote clients must connect to for the job
transmission protocol. The servers for individual suite runs, however,
would be placed at dynamically assigned ports, with port numbers
transmitted to clients through job parameters.

This does not work well when servers sit behind firewalls with restricted
UDP port ranges. This patch introduces the -p option, allowing ports for
server runs to remain fixed at the given port (which, of course, must
not conflict with the port number supplied with -s).
2012-12-11 19:02:24 -08:00
Ray Brown d67f48c050 Interactive performance test suite
The new module test_perf.py can be used to characterize protocol
performance over a particular network link. Two stream protocols
(TCP and SSL) and two datagram protocols (UDP and DTLS) are available
for relative comparison.

The module will run servers in its process, and will spawn clients either
into separate processes, or, depending on command line options, will
expect one or more remote clients to connect to it. In the latter case,
jobs will be sent to such clients via a shared queue whenever the user
selects a test suite.

Stress testing under packet loss conditions revealed that that the
OpenSSL library's compression feature needed to be explicitly disabled
for DTLS: it evidently operates at the stream layer as opposed to the
datagram layer, and packet loss would result in corruption among the
packets that were successfully received, authenticated, and decrypted.

Several performance improvements are included in this patch.
2012-12-10 20:52:49 -08:00
Ray Brown 5f97e81a69 Use ssl module locking when available
Thread locking callbacks into the interpreter impose considerable overhead.
The standard library's ssl module registers its own thread locking and id
callback functions. Registration of the latter can be detected by a call to
the OpenSSL library. In this case, do not set the Python callback function
and therefore keep using the more efficient ssl module functions.
2012-12-02 13:01:45 -08:00
Ray Brown 7c6a512f94 64-bit port
On a 64-bit OS, pointer return values needed to be marked as c_void_p instead
of a user-defined type, which would result in the transfer of 32 bits only.
In order to still return an instance of the user-defined type to the caller,
imported functions are now marked with the return type, and the return
value is converted to that type by a new error checking function used only
with imported functions that create and return user-defined types.

On 64-bit Linux, the long type becomes 8 bytes, whereas the int type remains
4 bytes. The various sockaddr_* fields therefore needed to be changed from
long to int, as did the type signatures of the packed string to array
conversion functions.

On an Ubuntu server installation, it was found that the name "localhost"
does not resolve to an ipv6 address. A name search has therefore been added
to the unit test driver, along with an ip number fallback.

Tested on Ubuntu Server 12.04.1 LTS 64-bit.
Regression tested on Ubuntu 12.04.1 LTS 32-bit.
2012-12-02 10:39:39 -08:00
Ray Brown 77a50c7382 Implement and turn on the osnet demux
This change introduces a demux that uses the kernel's network stack for UDP
datagram-to-socket assignment based on packet source address (as opposed to the
forwarding strategy of the routing demux). The osnet demux is used by default
on non-Windows platforms. When possible, use of the osnet demux is preferred
over the routing demux, since it can be expected to perform better.

The unit test suite has been extended to run all tests first with the demux
selected by default for the current platform, and then with the routing demux,
if the latter differs from the former. Tests were already being run twice, first
with IPv4 and then with IPv6, and thus we now run each test four times on
Linux, twice on Windows.

All unit tests pass with both demux types.
2012-11-27 21:33:09 -08:00
Ray Brown ca32b91a9c Linux port
With this change all unit tests pass on the Linux platform (tested on
Ubuntu 12.04.1 LTS). demux/__init__.py has been adjusted temporarily so as
to load the routing demux on Linux until the osnet demux is ready.

Testing on Linux exposed an issue where comparison of the ssl object value from
cookie callbacks failed to compare equal to the value stored in the
SSLConnection callback object. This was because the callback function signature
of c_void_p for this parameter produced a 64-bit value if the 32nd bit was set
(as opposed to producing a negative integer 32-bit value). Changing the
signature from c_void_p to c_int for this parameter fixes the issue.
2012-11-26 21:07:56 -08:00
Ray Brown 9bee9d049f Echo server connection timeout and monitoring
Prior to this change, the unit tests' echo servers' connections would sometimes
linger beyond server termination. A timeout mechanism is now implemented, which
will terminate a connection and clean up its resources when the timeout is
reached. For the purpose of unit testing, test echo servers now assert that
all connections have been terminated when the servers are closed.

For threaded echo servers, the timeout mechanism involves the use of sockets
with timeouts instead of blocking sockets. This required an implementation with
the proper handling of timeout sockets at the sslconnection level.
2012-11-25 13:44:55 -08:00