==== NEWS ==== Highlights of what's new in each release. Issues noted as "'ssh' #NN" can be found at https://github.com/bitprophet/ssh/. Issues noted as "Fabric #NN" can be found at https://github.com/fabric/fabric/. Releases ======== v1.10.0 (DD MM YYYY) -------------------- * #110: Honor SSH config `AddressFamily` setting when looking up local host's FQDN. Thanks to John Hensley for the patch. * #128: Defer FQDN resolution until needed, when parsing SSH config files. Thanks to Parantapa Bhattacharya for catch & patch. * #102: Forego random padding for packets when running under `*-ctr` ciphers. This corrects some slowdowns on platforms where random byte generation is inefficient (e.g. Windows). Thanks to `@warthog618` for catch & patch, and Michael van der Kolff for code/technique review. * #127: Turn `SFTPFile` into a context manager. Thanks to Michael Williamson * for the patch. * #116: Limit `Message.get_bytes` to an upper bound of 1MB to protect against potential DoS vectors. Thanks to `@mvschaik` for catch & patch. * #115: Add convenience `get_pty` kwarg to `Client.exec_command` so users not manually controlling a channel object can still toggle PTY creation. Thanks to Michael van der Kolff for the patch. * #71: Add `SFTPClient.putfo` and `.getfo` methods to allow direct uploading/downloading of file-like objects. Thanks to Eric Buehl for the patch. * #113: Add `timeout` parameter to `SSHClient.exec_command` for easier setting of the command's internal channel object's timeout. Thanks to Cernov Vladimir for the patch. * #94: Remove duplication of SSH port constant. Thanks to Olle Lundberg for the catch. * #80: Expose the internal "is closed" property of the file transfer class `BufferedFile` as `.closed`, better conforming to Python's file interface. Thanks to `@smunaut` and James Hiscock for catch & patch. v1.9.0 (6th Nov 2012) --------------------- * #97 (with a little #93): Improve config parsing of `ProxyCommand` directives and provide a wrapper class to allow subprocess-driven proxy commands to be used as `sock=` arguments for `SSHClient.connect`. * #77: Allow `SSHClient.connect()` to take an explicit `sock` parameter overriding creation of an internal, implicit socket object. * Thanks in no particular order to Erwin Bolwidt, Oskari Saarenmaa, Steven Noonan, Vladimir Lazarenko, Lincoln de Sousa, Valentino Volonghi, Olle Lundberg, and Github user `@acrish` for the various and sundry patches leading to the above changes. v1.8.1 (6th Nov 2012) --------------------- * #90: Ensure that callbacks handed to `SFTPClient.get()` always fire at least once, even for zero-length files downloaded. Thanks to Github user `@enB` for the catch. * #85: Paramiko's test suite overrides `unittest.TestCase.assertTrue/assertFalse` to provide these modern assertions to Python 2.2/2.3, which lacked them. However on newer Pythons such as 2.7, this now causes deprecation warnings. The overrides have been patched to only execute when necessary. Thanks to `@Arfrever` for catch & patch. v1.8.0 (3rd Oct 2012) --------------------- * #17 ('ssh' 28): Fix spurious `NoneType has no attribute 'error'` and similar exceptions that crop up on interpreter exit. * 'ssh' 32: Raise a more useful error explaining which `known_hosts` key line was problematic, when encountering `binascii` issues decoding known host keys. Thanks to `@thomasvs` for catch & patch. * 'ssh' 33: Bring `ssh_config` parsing more in line with OpenSSH spec, re: order of setting overrides by `Host` specifiers. Specifically, the overrides now go by file order instead of automatically sorting by `Host` value length. In addition, the first value found per config key (e.g. `Port`, `User` etc) wins, instead of the last. Thanks to Jan Brauer for the contribution. * 'ssh' 36: Support new server two-factor authentication option (`RequiredAuthentications2`), at least re: combining key-based & password auth. Thanks to Github user `bninja`. * 'ssh' 11: When raising an exception for hosts not listed in `known_hosts` (when `RejectPolicy` is in effect) the exception message was confusing/vague. This has been improved somewhat. Thanks to Cal Leeming for highlighting the issue. * 'ssh' 40: Fixed up & expanded EINTR signal handling. Thanks to Douglas Turk. * 'ssh' 15: Implemented parameter substitution in SSHConfig, matching the implementation of `ssh_config(5)`. Thanks to Olle Lundberg for the patch. * 'ssh' 24: Switch some internal type checking to use `isinstance` to help prevent problems with client libraries using subclasses of builtin types. Thanks to Alex Morega for the patch. * Fabric #562: Agent forwarding would error out (with `Authentication response too long`) or freeze, when more than one remote connection to the local agent was active at the same time. This has been fixed. Thanks to Steven McDonald for assisting in troubleshooting/patching, and to GitHub user `@lynxis` for providing the final version of the patch. * 'ssh' 5: Moved a `fcntl` import closer to where it's used to help avoid `ImportError` problems on Windows platforms. Thanks to Jason Coombs for the catch + suggested fix. * 'ssh' 4: Updated implementation of WinPageant integration to work on 64-bit Windows. Thanks again to Jason Coombs for the patch. * Added an IO loop sleep() call to avoid needless CPU usage when agent forwarding is in use. * Handful of internal tweaks to version number storage. * Updated `setup.py` with `==dev` install URL for `pip` users. * Updated `setup.py` to account for packaging problems in PyCrypto 2.4.0 * Added an extra `atfork()` call to help prevent spurious RNG errors when running under high parallel (multiprocess) load. * Merge PR #28: https://github.com/paramiko/paramiko/pull/28 which adds a ssh-keygen like demo module. (Sofian Brabez) v1.7.7.2 16may12 ---------------- * Merge pull request #63: https://github.com/paramiko/paramiko/pull/63 which fixes exceptions that occur when re-keying over fast connections. (Dwayne Litzenberger) v1.7.7.1 (George) 21may11 ------------------------- * Make the verification phase of SFTP.put optional (Larry Wright) * Patches to fix AIX support (anonymous) * Patch from Michele Bertoldi to allow compression to be turned on in the client constructor. * Patch from Shad Sharma to raise an exception if the transport isn't active when you try to open a new channel. * Stop leaking file descriptors in the SSH agent (John Adams) * More fixes for Windows address family support (Andrew Bennetts) * Use Crypto.Random rather than Crypto.Util.RandomPool (Gary van der Merwe, #271791) * Support for openssl keys (tehfink) * Fix multi-process support by calling Random.atfork (sugarc0de) v1.7.6 (Fanny) 1nov09 --------------------- * fixed bugs 411099 (sftp chdir isn't unicode-safe), 363163 & 411910 (more IPv6 problems on windows), 413850 (race when server closes the channel), 426925 (support port numbers in host keys) v1.7.5 (Ernest) 19jul09 ----------------------- * added support for ARC4 cipher and CTR block chaining (Denis Bernard) * made transport threads daemonize, to fix python 2.6 atexit behavior * support unicode hostnames, and IP6 addresses (Maxime Ripard, Shikhar Bhushan) * various small bug fixes v1.7.4 (Desmond) 06jul08 ------------------------ * more randpool fixes for windows, from Dwayne Litzenberger (NOTE: this may require a pycrypto upgrade on windows) * fix potential deadlock during key exchange (Dwayne Litzenberger) * remove MFC dependency from windows (Mark Hammond) * added some optional API improvements for SFTPClient get() and put() v1.7.3 (Clara) 23mar08 ---------------------- * SSHClient can be asked not to use an SSH agent now, and not to search for private keys * added WarningPolicy option for SSHClient (warn, but allow, on unknown server keys) * added Channel.exit_status_ready to poll if a channel has received an exit status yet * new demo for reverse port forwarding * (bug 177117) fix UTF-8 passwords * (bug 189466) fix typo in osrandom.py * (bug 191657) potentially fix a race at channel shutdown * (bug 192749) document that SSHClient.connect may raise socket.error * (bug 193779) translate EOFError into AuthException during authentication * (bug 200416) don't create a new logger object for each channel v1.7.2 (Basil) 21jan08 ---------------------- * (bug 137219) catch EINTR and handle correctly * (bug 157205) fix select() to trigger on stderr for a channel too * added SSHClient.get_transport() * added Channel.send_ready() * added direct-tcpip forwarding [patch from david guerizec] * fixed the PRNG to be more secure on windows and in cases where fork() is called [patch from dwayne litzenberger] v1.7.1 (Amy) 10jun07 -------------------- * windows SSH agent support can use the 'ctypes' module now if 'win32all' is not available [patch from alexander belchenko] * SFTPClient.listdir_attr() now preserves the 'longname' field [patch from wesley augur] * SFTPClient.get_channel() API added * SSHClient constuctor takes an optional 'timeout' parameter [patch from james bardin] v1.7 (zubat) 18feb07 -------------------- * added x11 channel support (patch from david guerizec) * added reverse port forwarding support * (bug 75370) raise an exception when contacting a broken SFTP server * (bug 80295) SSHClient shouldn't expand the user directory twice when reading RSA/DSS keys * (bug 82383) typo in DSS key in SSHClient * (bug 83523) python 2.5 warning when encoding a file's modification time * if connecting to an SSH agent fails, silently fallback instead of raising an exception v1.6.4 (yanma) 19nov06 ---------------------- * fix setup.py on osx (oops!) * (bug 69330) check for the existence of RSA/DSA keys before trying to open them in SFTPClient * (bug 69222) catch EAGAIN in socket code to workaround a bug in recent Linux 2.6 kernels * (bug 70398) improve dict emulation in HostKeys objects * try harder to make sure all worker threads are joined on Transport.close() v1.6.3 (xatu) 14oct06 --------------------- * fixed bug where HostKeys.__setitem__ wouldn't always do the right thing * fixed bug in SFTPClient.chdir and SFTPAttributes.__str__ [patch from mike barber] * try harder not to raise EOFError from within SFTPClient * fixed bug where a thread waiting in accept() could block forever if the transport dies [patch from mike looijmans] v1.6.2 (weedle) 16aug06 ----------------------- * added support for "old" group-exchange server mode, for compatibility with the windows putty client * fixed some more interactions with SFTP file readv() and prefetch() * when saving the known_hosts file, preserve the original order [patch from warren young] * fix a couple of broken lines when exporting classes (bug 55946) v1.6.1 (vulpix) 10jul06 ----------------------- * more unit tests fixed for windows/cygwin (thanks to alexander belchenko) * a couple of fixes related to exceptions leaking out of SFTPClient * added ability to set items in HostKeys via __setitem__ * HostKeys now retains order and has a save() method * added PKey.write_private_key and PKey.from_private_key v1.6 (umbreon) 10may06 ---------------------- * pageant support on Windows thanks to john arbash meinel and todd whiteman * fixed unit tests to work under windows and cygwin (thanks to alexander belchenko for debugging) * various bugfixes/tweaks to SFTP file prefetch * added SSHClient for a higher-level API * SFTP readv() now yields results as it gets them * several APIs changed to throw an exception instead of "False" on failure v1.5.4 (tentacool) 11mar06 -------------------------- * fixed HostKeys to more correctly emulate a python dict * fixed a bug where file read buffering was too aggressive * improved prefetching so that out-of-order reads still use the prefetch buffer * added experimental SFTPFile.readv() call * more unit tests v1.5.3 (squirtle) 19feb06 ------------------------- * a few performance enhancements * added HostKeys, for dealing with openssh style "known_hosts" files, and added support for hashed hostnames * added Transport.atfork() for dealing with forked children * added SFTPClient.truncate, SFTPFile.chmod, SFTPFile.chown, SFTPFile.utime, and SFTPFile.truncate * improved windows demos [patch from mike looijmans], added an sftp demo, and moved demos to the demos/ folder * fixed a few interoperability bugs * cleaned up logging a bit * fixed a bug where EOF on a Channel might not be detected by select [found by thomas steinacher] * fixed python 2.4-ism that crept in [patch by jan hudec] * fixed a few reference loops that could have interacted badly with the python garbage collector * fixed a bunch of pychecker warnings, some of which were bugs v1.5.2 (rhydon) 04dec05 ----------------------- * compression support (opt-in via Transport.use_compression) * sftp files may be opened with mode flag 'x' for O_EXCL (exclusive-open) behavior, which has no direct python equivalent * added experimental util functions for parsing openssh config files * fixed a few bugs (and potential deadlocks) with key renegotiation * fixed a bug that caused SFTPFile.prefetch to occasionally lock up * fixed an sftp bug which affected van dyke sftp servers * fixed the behavior of select()ing on a closed channel, such that it will always trigger as readable v1.5.1 (quilava) 31oct05 ------------------------ * SFTPFile.prefetch() added to dramatically speed up downloads (automatically turned on in SFTPClient.get()) * fixed bug where garbage-collected Channels could trigger the Transport to close the session (reported by gordon good) * fixed a deadlock in rekeying (reported by wendell wood) * fixed some windows bugs and SFTPAttributes.__str__() (reported by grzegorz makarewicz) * better sftp error reporting by adding fake "errno" info to IOErrors v1.5 (paras) 02oct05 -------------------- * added support for "keyboard-interactive" authentication * added mode (on by default) where password authentication will try to fallback to "keyboard-interactive" if it's supported * added pipelining to SFTPFile.write and SFTPClient.put * fixed bug with SFTPFile.close() not guarding against being called more than once (thanks to Nathaniel Smith) * fixed broken 'a' flag in SFTPClient.file() (thanks to Nathaniel Smith) * fixed up epydocs to look nicer * reorganized auth_transport into auth_handler, which seems to be a cleaner separation * demo scripts fixed to have a better chance of loading the host keys correctly on windows/cygwin v1.4 (oddish) 17jul05 --------------------- * added SSH-agent support (for posix) from john rochester * added chdir() and getcwd() to SFTPClient, to emulate a "working directory" * added get() and put() to SFTPClient, to emulate ftp whole-file transfers * added check() to SFTPFile (a file hashing protocol extension) * fixed Channels and SFTPFiles (among others) to auto-close when GC'd * fixed Channel.fileno() for Windows, this time really * don't log socket errors as "unknown exception" * some misc. backward-compatible API improvements (like allowing Transport.start_client() and start_server() to be called in a blocking way) v1.3.1 (nidoran) 28jun05 ------------------------ * added SFTPClient.close() * fixed up some outdated documentation * made SFTPClient.file() an alias for open() * added Transport.open_sftp_client() for convenience * refactored packetizing out of Transport * fixed bug (reported by alain s.) where connecting to a non-SSH host could cause paramiko to freeze up * fixed Channel.fileno() for Windows (again) * some more unit tests v1.3 (marowak) 09apr05 ---------------------- * fixed a bug where packets larger than about 12KB would cause the session to die on all platforms except osx * added a potential workaround for windows to let Channel.fileno() (and therefore the select module) work! * changed API for subsystem handlers (sorry!) to pass more info and make it easier to write a functional SFTP server v1.2 (lapras) 28feb05 --------------------- * added SFTPClient.listdir_attr() for fetching a list of files and their attributes in one call * added Channel.recv_exit_status() and Channel.send_exit_status() for manipulating the exit status of a command from either client or server mode * moved check_global_request into ServerInterface, where it should've been all along (oops) * SFTPHandle's default implementations are fleshed out more * made logging a bit more consistent, and started logging thread ids * fixed a few race conditions, one of which would sometimes cause a Transport to fail to start on slow machines * more unit tests v1.1 (kabuto) 12dec04 --------------------- * server-side SFTP support * added support for stderr streams on client & server channels * added a new distinct exception for failed client authentication when caused by the server rejecting that *type* of auth * added support for multi-part authentication * fixed bug where get_username() wasn't working in server mode v1.0 (jigglypuff) 06nov04 ------------------------- * fixed bug that broke server-mode authentication by private key * fixed bug where closing a Channel could end up killing the entire Transport * actually include demo_windows.py this time (oops!) * fixed recently-introduced bug in group-exchange key negotiation that would generate the wrong hash (and therefore fail the initial handshake) * server-mode subsystem handler is a bit more flexible v0.9 (ivysaur) 22oct04 ---------------------- * new ServerInterface class for implementing server policy, so it's no longer necessary to subclass Transport or Channel -- server code will need to be updated to follow this new API! (see demo_server.py) * some bugfixes for re-keying an active session * Transport.get_security_options() allows fine-tuned control over the crypto negotiation on a new session * Transport.connect() takes a single hostkey object now instead of two string parameters * the Channel request methods (like 'exec_command') now return True on success or False on failure * added a mechanism for providing subsystems in server mode (and a new class to be subclassed: SubsystemHandler) * renamed SFTP -> SFTPClient (but left an alias for existing code) * added SFTPClient.normalize() to resolve paths on the server * fleshed out the API a bit more for SFTPClient and private keys * a bunch of new unit tests! v0.9 (horsea) 27jun04 --------------------- * fixed a lockup that could happen if the channel was closed while the send window was full * better checking of maximum packet sizes * better line buffering for file objects * now chops sftp requests into smaller packets for some older servers * more sftp unit tests v0.9 (gyarados) 31may04 ----------------------- * Transport.open_channel() -- supports local & remote port forwarding now * now imports UTF-8 encodings explicitly as a hint to "freeze" utilities * no longer rejects older SFTP servers * default packet size bumped to 8kB * fixed deadlock in closing a channel * Transport.connect() -- fixed bug where it would always fail when given a host key to verify v0.9 (fearow) 23apr04 --------------------- * Transport.send_ignore() -- send random ignored bytes * RSAKey/DSSKey added from_private_key_file() as a factory constructor; write_private_key_file() & generate() to create and save ssh2 keys; get_base64() to retrieve the exported public key * Transport added global_request() [client] and check_global_request() [server] * Transport.get_remove_server_key() now returns a PKey object instead of a tuple of strings * Transport.get_username() -- return the username you auth'd as [client] * Transport.set_keepalive() -- makes paramiko send periodic junk packets to the remote host, to keep the session active * python 2.2 support (thanks to Roger Binns) * misc. bug fixes v0.9 (eevee) 08mar04 -------------------- v0.9 (doduo) 04jan04 -------------------- v0.1 (charmander) 10nov03 ------------------------- v0.1 (bulbasaur) 18sep03 ------------------------ v0.1 (aerodactyl) 13sep03 -------------------------