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|
=========
Changelog
=========
* :bug:`499` Strip trailing/leading whitespace from lines when parsing SSH
config files - this brings things in line with OpenSSH behavior. Thanks to
Alfredo Esteban for the original report and Nick Pillitteri for the patch.
* :bug:`652` Fix behavior of ``gssapi-with-mic`` auth requests so they fail
gracefully (allowing followup via other auth methods) instead of raising an
exception. Patch courtesy of ``@jamercee``.
* :support:`636` Clean up and enhance the README (and rename it to
``README.rst`` from just ``README``). Thanks to ``@LucasRMehl``.
* :release:`1.16.0 <2015-11-04>`
* :bug:`194 major` (also :issue:`562`, :issue:`530`, :issue:`576`) Streamline
use of ``stat`` when downloading SFTP files via `SFTPClient.get
<paramiko.sftp_client.SFTPClient.get>`; this avoids triggering bugs in some
off-spec SFTP servers such as IBM Sterling. Thanks to ``@muraleee`` for the
initial report and to Torkil Gustavsen for the patch.
* :feature:`467` (also :issue:`139`, :issue:`412`) Fully enable two-factor
authentication (e.g. when a server requires ``AuthenticationMethods
pubkey,keyboard-interactive``). Thanks to ``@perryjrandall`` for the patch
and to ``@nevins-b`` and Matt Robenolt for additional support.
* :bug:`502 major` Fix 'exec' requests in server mode to use ``get_string``
instead of ``get_text`` to avoid ``UnicodeDecodeError`` on non-UTF-8 input.
Thanks to Anselm Kruis for the patch & discussion.
* :bug:`401` Fix line number reporting in log output regarding invalid
``known_hosts`` line entries. Thanks to Dylan Thacker-Smith for catch &
patch.
* :support:`525 backported` Update the vendored Windows API addon to a more
recent edition. Also fixes :issue:`193`, :issue:`488`, :issue:`498`. Thanks
to Jason Coombs.
* :release:`1.15.4 <2015-11-02>`
* :release:`1.14.3 <2015-11-02>`
* :release:`1.13.4 <2015-11-02>`
* :bug:`366` Fix `~paramiko.sftp_attributes.SFTPAttributes` so its string
representation doesn't raise exceptions on empty/initialized instances. Patch
by Ulrich Petri.
* :bug:`359` Use correct attribute name when trying to use Python 3's
``int.bit_length`` method; prior to fix, the Python 2 custom fallback
implementation was always used, even on Python 3. Thanks to Alex Gaynor.
* :support:`594 backported` Correct some post-Python3-port docstrings to
specify ``bytes`` type instead of ``str``. Credit to ``@redixin``.
* :bug:`565` Don't explode with ``IndexError`` when reading private key files
lacking an ``-----END <type> PRIVATE KEY-----`` footer. Patch courtesy of
Prasanna Santhanam.
* :feature:`604` Add support for the ``aes192-ctr`` and ``aes192-cbc`` ciphers.
Thanks to Michiel Tiller for noticing it was as easy as tweaking some key
sizes :D
* :feature:`356` (also :issue:`596`, :issue:`365`, :issue:`341`, :issue:`164`,
:issue:`581`, and a bunch of other duplicates besides) Add support for SHA-2
based key exchange (kex) algorithm ``diffie-hellman-group-exchange-sha256``
and (H)MAC algorithms ``hmac-sha2-256`` and ``hmac-sha2-512``.
This change includes tweaks to debug-level logging regarding
algorithm-selection handshakes; the old all-in-one log line is now multiple
easier-to-read, printed-at-handshake-time log lines.
Thanks to the many people who submitted patches for this functionality and/or
assisted in testing those patches. That list includes but is not limited to,
and in no particular order: Matthias Witte, Dag Wieers, Ash Berlin, Etienne
Perot, Gert van Dijk, ``@GuyShaanan``, Aaron Bieber, ``@cyphase``, and Eric
Brown.
* :release:`1.15.3 <2015-10-02>`
* :support:`554 backported` Fix inaccuracies in the docstring for the ECDSA key
class. Thanks to Jared Hance for the patch.
* :support:`516 backported` Document `~paramiko.agent.AgentRequestHandler`.
Thanks to ``@toejough`` for report & suggestions.
* :bug:`496` Fix a handful of small but critical bugs in Paramiko's GSSAPI
support (note: this includes switching from PyCrypo's Random to
`os.urandom`). Thanks to Anselm Kruis for catch & patch.
* :bug:`491` (combines :issue:`62` and :issue:`439`) Implement timeout
functionality to address hangs from dropped network connections and/or failed
handshakes. Credit to ``@vazir`` and ``@dacut`` for the original patches and
to Olle Lundberg for reimplementation.
* :bug:`490` Skip invalid/unparseable lines in ``known_hosts`` files, instead
of raising `~paramiko.ssh_exception.SSHException`. This brings Paramiko's
behavior more in line with OpenSSH, which silently ignores such input. Catch
& patch courtesy of Martin Topholm.
* :bug:`404` Print details when displaying
`~paramiko.ssh_exception.BadHostKeyException` objects (expected vs received
data) instead of just "hey shit broke". Patch credit: Loic Dachary.
* :bug:`469` (also :issue:`488`, :issue:`461` and like a dozen others) Fix a
typo introduced in the 1.15 release which broke WinPageant support. Thanks to
everyone who submitted patches, and to Steve Cohen who was the lucky winner
of the cherry-pick lottery.
* :bug:`353` (via :issue:`482`) Fix a bug introduced in the Python 3 port
which caused ``OverFlowError`` (and other symptoms) in SFTP functionality.
Thanks to ``@dboreham`` for leading the troubleshooting charge, and to
Scott Maxwell for the final patch.
* :support:`582` Fix some old ``setup.py`` related helper code which was
breaking ``bdist_dumb`` on Mac OS X. Thanks to Peter Odding for the patch.
* :bug:`22 major` Try harder to connect to multiple network families (e.g. IPv4
vs IPv6) in case of connection issues; this helps with problems such as hosts
which resolve both IPv4 and IPv6 addresses but are only listening on IPv4.
Thanks to Dries Desmet for original report and Torsten Landschoff for the
foundational patchset.
* :bug:`402` Check to see if an SSH agent is actually present before trying to
forward it to the remote end. This replaces what was usually a useless
``TypeError`` with a human-readable
`~paramiko.ssh_exception.AuthenticationException`. Credit to Ken Jordan for
the fix and Yvan Marques for original report.
* :release:`1.15.2 <2014-12-19>`
* :release:`1.14.2 <2014-12-19>`
* :release:`1.13.3 <2014-12-19>`
* :bug:`413` (also :issue:`414`, :issue:`420`, :issue:`454`) Be significantly
smarter about polling & timing behavior when running proxy commands, to avoid
unnecessary (often 100%!) CPU usage. Major thanks to Jason Dunsmore for
report & initial patchset and to Chris Adams & John Morrissey for followup
improvements.
* :bug:`455` Tweak packet size handling to conform better to the OpenSSH RFCs;
this helps address issues with interactive program cursors. Courtesy of Jeff
Quast.
* :bug:`428` Fix an issue in `~paramiko.file.BufferedFile` (primarily used in
the SFTP modules) concerning incorrect behavior by
`~paramiko.file.BufferedFile.readlines` on files whose size exceeds the
buffer size. Thanks to ``@achapp`` for catch & patch.
* :bug:`415` Fix ``ssh_config`` parsing to correctly interpret ``ProxyCommand
none`` as the lack of a proxy command, instead of as a literal command string
of ``"none"``. Thanks to Richard Spiers for the catch & Sean Johnson for the
fix.
* :support:`431 backported` Replace handrolled ``ssh_config`` parsing code with
use of the ``shlex`` module. Thanks to Yan Kalchevskiy.
* :support:`422 backported` Clean up some unused imports. Courtesy of Olle
Lundberg.
* :support:`421 backported` Modernize threading calls to use newer API. Thanks
to Olle Lundberg.
* :support:`419 backported` Modernize a bunch of the codebase internals to
leverage decorators. Props to ``@beckjake`` for realizing we're no longer on
Python 2.2 :D
* :bug:`266` Change numbering of `~paramiko.transport.Transport` channels to
start at 0 instead of 1 for better compatibility with OpenSSH & certain
server implementations which break on 1-indexed channels. Thanks to
``@egroeper`` for catch & patch.
* :bug:`459` Tighten up agent connection closure behavior to avoid spurious
``ResourceWarning`` display in some situations. Thanks to ``@tkrapp`` for the
catch.
* :bug:`429` Server-level debug message logging was overlooked during the
Python 3 compatibility update; Python 3 clients attempting to log SSH debug
packets encountered type errors. This is now fixed. Thanks to ``@mjmaenpaa``
for the catch.
* :bug:`320` Update our win_pageant module to be Python 3 compatible. Thanks to
``@sherbang`` and ``@adamkerz`` for the patches.
* :release:`1.15.1 <2014-09-22>`
* :bug:`399` SSH agent forwarding (potentially other functionality as
well) would hang due to incorrect values passed into the new window size
arguments for `.Transport` (thanks to a botched merge). This has been
corrected. Thanks to Dylan Thacker-Smith for the report & patch.
* :feature:`167` Add `.SSHConfig.get_hostnames` for easier introspection of a
loaded SSH config file or object. Courtesy of Søren Løvborg.
* :release:`1.15.0 <2014-09-18>`
* :support:`393` Replace internal use of PyCrypto's ``SHA.new`` with the
stdlib's ``hashlib.sha1``. Thanks to Alex Gaynor.
* :feature:`267` (also :issue:`250`, :issue:`241`, :issue:`228`) Add GSS-API /
SSPI (e.g. Kerberos) key exchange and authentication support
(:ref:`installation docs here <gssapi>`). Mega thanks to Sebastian Deiß, with
assist by Torsten Landschoff.
.. note::
Unix users should be aware that the ``python-gssapi`` library (a
requirement for using this functionality) only appears to support
Python 2.7 and up at this time.
* :bug:`346 major` Fix an issue in private key files' encryption salts that
could cause tracebacks and file corruption if keys were re-encrypted. Credit
to Xavier Nunn.
* :feature:`362` Allow users to control the SSH banner timeout. Thanks to Cory
Benfield.
* :feature:`372` Update default window & packet sizes to more closely adhere to
the pertinent RFC; also expose these settings in the public API so they may
be overridden by client code. This should address some general speed issues
such as :issue:`175`. Big thanks to Olle Lundberg for the update.
* :bug:`373 major` Attempt to fix a handful of issues (such as :issue:`354`)
related to infinite loops and threading deadlocks. Thanks to Olle Lundberg as
well as a handful of community members who provided advice & feedback via
IRC.
* :support:`374` (also :issue:`375`) Old code cleanup courtesy of Olle
Lundberg.
* :support:`377` Factor `~paramiko.channel.Channel` openness sanity check into
a decorator. Thanks to Olle Lundberg for original patch.
* :bug:`298 major` Don't perform point validation on ECDSA keys in
``known_hosts`` files, since a) this can cause significant slowdown when such
keys exist, and b) ``known_hosts`` files are implicitly trustworthy. Thanks
to Kieran Spear for catch & patch.
.. note::
This change bumps up the version requirement for the ``ecdsa`` library to
``0.11``.
* :bug:`234 major` Lower logging levels for a few overly-noisy log messages
about secure channels. Thanks to David Pursehouse for noticing & contributing
the fix.
* :feature:`218` Add support for ECDSA private keys on the client side. Thanks
to ``@aszlig`` for the patch.
* :bug:`335 major` Fix ECDSA key generation (generation of brand new ECDSA keys
was broken previously). Thanks to ``@solarw`` for catch & patch.
* :feature:`184` Support quoted values in SSH config file parsing. Credit to
Yan Kalchevskiy.
* :feature:`131` Add a `~paramiko.sftp_client.SFTPClient.listdir_iter` method
to `~paramiko.sftp_client.SFTPClient` allowing for more efficient,
async/generator based file listings. Thanks to John Begeman.
* :support:`378 backported` Minor code cleanup in the SSH config module
courtesy of Olle Lundberg.
* :support:`249 backported` Consolidate version information into one spot.
Thanks to Gabi Davar for the reminder.
* :release:`1.14.1 <2014-08-25>`
* :release:`1.13.2 <2014-08-25>`
* :bug:`376` Be less aggressive about expanding variables in ``ssh_config``
files, which results in a speedup of SSH config parsing. Credit to Olle
Lundberg.
* :support:`324 backported` A bevvy of documentation typo fixes, courtesy of Roy
Wellington.
* :bug:`312` `paramiko.transport.Transport` had a bug in its ``__repr__`` which
surfaces during errors encountered within its ``__init__``, causing
problematic tracebacks in such situations. Thanks to Simon Percivall for
catch & patch.
* :bug:`272` Fix a bug where ``known_hosts`` parsing hashed the input hostname
as well as the hostnames from the ``known_hosts`` file, on every comparison.
Thanks to ``@sigmunau`` for final patch and ``@ostacey`` for the original
report.
* :bug:`239` Add Windows-style CRLF support to SSH config file parsing. Props
to Christopher Swenson.
* :support:`229 backported` Fix a couple of incorrectly-copied docstrings' ``..
versionadded::`` RST directives. Thanks to Aarni Koskela for the catch.
* :support:`169 backported` Minor refactor of
`paramiko.sftp_client.SFTPClient.put` thanks to Abhinav Upadhyay.
* :bug:`285` (also :issue:`352`) Update our Python 3 ``b()`` compatibility shim
to handle ``buffer`` objects correctly; this fixes a frequently reported
issue affecting many users, including users of the ``bzr`` software suite.
Thanks to ``@basictheprogram`` for the initial report, Jelmer Vernooij for
the fix and Andrew Starr-Bochicchio & Jeremy T. Bouse (among others) for
discussion & feedback.
* :support:`371` Add Travis support & docs update for Python 3.4. Thanks to
Olle Lundberg.
* :release:`1.14.0 <2014-05-07>`
* :release:`1.13.1 <2014-05-07>`
* :release:`1.12.4 <2014-05-07>`
* :release:`1.11.6 <2014-05-07>`
* :bug:`-` `paramiko.file.BufferedFile.read` incorrectly returned text strings
after the Python 3 migration, despite bytes being more appropriate for file
contents (which may be binary or of an unknown encoding.) This has been
addressed.
.. note::
`paramiko.file.BufferedFile.readline` continues to return strings, not
bytes, as "lines" only make sense for textual data. It assumes UTF-8 by
default.
This should fix `this issue raised on the Obnam mailing list
<http://comments.gmane.org/gmane.comp.sysutils.backup.obnam/252>`_. Thanks
to Antoine Brenner for the patch.
* :bug:`-` Added self.args for exception classes. Used for unpickling. Related
to (`Fabric #986 <https://github.com/fabric/fabric/issues/986>`_, `Fabric
#714 <https://github.com/fabric/fabric/issues/714>`_). Thanks to Alex
Plugaru.
* :bug:`-` Fix logging error in sftp_client for filenames containing the '%'
character. Thanks to Antoine Brenner.
* :bug:`308` Fix regression in dsskey.py that caused sporadic signature
verification failures. Thanks to Chris Rose.
* :support:`299` Use deterministic signatures for ECDSA keys for improved
security. Thanks to Alex Gaynor.
* :support:`297` Replace PyCrypto's ``Random`` with `os.urandom` for improved
speed and security. Thanks again to Alex.
* :support:`295` Swap out a bunch of PyCrypto hash functions with use of
`hashlib`. Thanks to Alex Gaynor.
* :support:`290` (also :issue:`292`) Add support for building universal
(Python 2+3 compatible) wheel files during the release process. Courtesy of
Alex Gaynor.
* :support:`284` Add Python language trove identifiers to ``setup.py``. Thanks
to Alex Gaynor for catch & patch.
* :bug:`235` Improve string type testing in a handful of spots (e.g. ``s/if
type(x) is str/if isinstance(x, basestring)/g``.) Thanks to ``@ksamuel`` for
the report.
* :release:`1.13.0 <2014-03-13>`
* :release:`1.12.3 <2014-03-13>`
* :release:`1.11.5 <2014-03-13>`
* :release:`1.10.7 <2014-03-13>`
* :feature:`16` **Python 3 support!** Our test suite passes under Python 3, and
it (& Fabric's test suite) continues to pass under Python 2. **Python 2.5 is
no longer supported with this change!**
The merged code was built on many contributors' efforts, both code &
feedback. In no particular order, we thank Daniel Goertzen, Ivan Kolodyazhny,
Tomi Pieviläinen, Jason R. Coombs, Jan N. Schulze, ``@Lazik``, Dorian Pula,
Scott Maxwell, Tshepang Lekhonkhobe, Aaron Meurer, and Dave Halter.
* :support:`256 backported` Convert API documentation to Sphinx, yielding a new
API docs website to replace the old Epydoc one. Thanks to Olle Lundberg for
the initial conversion work.
* :bug:`-` Use constant-time hash comparison operations where possible, to
protect against `timing-based attacks
<http://codahale.com/a-lesson-in-timing-attacks/>`_. Thanks to Alex Gaynor
for the patch.
* :release:`1.12.2 <2014-02-14>`
* :release:`1.11.4 <2014-02-14>`
* :release:`1.10.6 <2014-02-14>`
* :feature:`58` Allow client code to access the stored SSH server banner via
`Transport.get_banner <paramiko.transport.Transport.get_banner>`. Thanks to
``@Jhoanor`` for the patch.
* :bug:`252` (`Fabric #1020 <https://github.com/fabric/fabric/issues/1020>`_)
Enhanced the implementation of ``ProxyCommand`` to avoid a deadlock/hang
condition that frequently occurs at ``Transport`` shutdown time. Thanks to
Mateusz Kobos, Matthijs van der Vleuten and Guillaume Zitta for the original
reports and to Marius Gedminas for helping test nontrivial use cases.
* :bug:`268` Fix some missed renames of ``ProxyCommand`` related error classes.
Thanks to Marius Gedminas for catch & patch.
* :bug:`34` (PR :issue:`35`) Fix SFTP prefetching incompatibility with some
SFTP servers regarding request/response ordering. Thanks to Richard
Kettlewell.
* :bug:`193` (and its attentant PRs :issue:`230` & :issue:`253`) Fix SSH agent
problems present on Windows. Thanks to David Hobbs for initial report and to
Aarni Koskela & Olle Lundberg for the patches.
* :release:`1.12.1 <2014-01-08>`
* :release:`1.11.3 <2014-01-08>`
* :release:`1.10.5 <2014-01-08>`
* :bug:`225 (1.12+)` Note ecdsa requirement in README. Thanks to Amaury
Rodriguez for the catch.
* :bug:`176` Fix AttributeError bugs in known_hosts file (re)loading. Thanks
to Nathan Scowcroft for the patch & Martin Blumenstingl for the initial test
case.
* :release:`1.12.0 <2013-09-27>`
* :release:`1.11.2 <2013-09-27>`
* :release:`1.10.4 <2013-09-27>`
* :feature:`152` Add tentative support for ECDSA keys. **This adds the ecdsa
module as a new dependency of Paramiko.** The module is available at
`warner/python-ecdsa on Github <https://github.com/warner/python-ecdsa>`_ and
`ecdsa on PyPI <https://pypi.python.org/pypi/ecdsa>`_.
* Note that you might still run into problems with key negotiation --
Paramiko picks the first key that the server offers, which might not be
what you have in your known_hosts file.
* Mega thanks to Ethan Glasser-Camp for the patch.
* :feature:`136` Add server-side support for the SSH protocol's 'env' command.
Thanks to Benjamin Pollack for the patch.
* :bug:`156 (1.11+)` Fix potential deadlock condition when using Channel
objects as sockets (e.g. when using SSH gatewaying). Thanks to Steven Noonan
and Frank Arnold for catch & patch.
* :bug:`179` Fix a missing variable causing errors when an ssh_config file has
a non-default AddressFamily set. Thanks to Ed Marshall & Tomaz Muraus for
catch & patch.
* :bug:`200` Fix an exception-causing typo in ``demo_simple.py``. Thanks to Alex
Buchanan for catch & Dave Foster for patch.
* :bug:`199` Typo fix in the license header cross-project. Thanks to Armin
Ronacher for catch & patch.
* :release:`1.11.1 <2013-09-20>`
* :release:`1.10.3 <2013-09-20>`
* :bug:`162` Clean up HMAC module import to avoid deadlocks in certain uses of
SSHClient. Thanks to Gernot Hillier for the catch & suggested fix.
* :bug:`36` Fix the port-forwarding demo to avoid file descriptor errors.
Thanks to Jonathan Halcrow for catch & patch.
* :bug:`168` Update config handling to properly handle multiple 'localforward'
and 'remoteforward' keys. Thanks to Emre Yılmaz for the patch.
* :release:`1.11.0 <2013-07-26>`
* :release:`1.10.2 <2013-07-26>`
* :bug:`98 major` On Windows, when interacting with the PuTTY PAgeant, Paramiko
now creates the shared memory map with explicit Security Attributes of the
user, which is the same technique employed by the canonical PuTTY library to
avoid permissions issues when Paramiko is running under a different UAC
context than the PuTTY Ageant process. Thanks to Jason R. Coombs for the
patch.
* :support:`100` Remove use of PyWin32 in ``win_pageant`` module. Module was
already dependent on ctypes for constructing appropriate structures and had
ctypes implementations of all functionality. Thanks to Jason R. Coombs for
the patch.
* :bug:`87 major` Ensure updates to ``known_hosts`` files account for any
updates to said files after Paramiko initially read them. (Includes related
fix to guard against duplicate entries during subsequent ``known_hosts``
loads.) Thanks to ``@sunweaver`` for the contribution.
* :bug:`153` (also :issue:`67`) Warn on parse failure when reading known_hosts
file. Thanks to ``@glasserc`` for patch.
* :bug:`146` Indentation fixes for readability. Thanks to Abhinav Upadhyay for
catch & patch.
* :release:`1.10.1 <2013-04-05>`
* :bug:`142` (`Fabric #811 <https://github.com/fabric/fabric/issues/811>`_)
SFTP put of empty file will still return the attributes of the put file.
Thanks to Jason R. Coombs for the patch.
* :bug:`154` (`Fabric #876 <https://github.com/fabric/fabric/issues/876>`_)
Forwarded SSH agent connections left stale local pipes lying around, which
could cause local (and sometimes remote or network) resource starvation when
running many agent-using remote commands. Thanks to Kevin Tegtmeier for catch
& patch.
* :release:`1.10.0 <2013-03-01>`
* :feature:`66` Batch SFTP writes to help speed up file transfers. Thanks to
Olle Lundberg for the patch.
* :bug:`133 major` Fix handling of window-change events to be on-spec and not
attempt to wait for a response from the remote sshd; this fixes problems with
less common targets such as some Cisco devices. Thanks to Phillip Heller for
catch & patch.
* :feature:`93` Overhaul SSH config parsing to be in line with ``man
ssh_config`` (& the behavior of ``ssh`` itself), including addition of parameter
expansion within config values. Thanks to Olle Lundberg for the patch.
* :feature:`110` Honor SSH config ``AddressFamily`` setting when looking up
local host's FQDN. Thanks to John Hensley for the patch.
* :feature:`128` Defer FQDN resolution until needed, when parsing SSH config
files. Thanks to Parantapa Bhattacharya for catch & patch.
* :bug:`102 major` 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.
* :feature:`127` Turn ``SFTPFile`` into a context manager. Thanks to Michael
Williamson for the patch.
* :feature:`116` Limit ``Message.get_bytes`` to an upper bound of 1MB to protect
against potential DoS vectors. Thanks to ``@mvschaik`` for catch & patch.
* :feature:`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.
* :feature:`71` Add ``SFTPClient.putfo`` and ``.getfo`` methods to allow direct
uploading/downloading of file-like objects. Thanks to Eric Buehl for the
patch.
* :feature:`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.
* :support:`94` Remove duplication of SSH port constant. Thanks to Olle
Lundberg for the catch.
* :feature:`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.
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