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Transmission support

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Ruud committed 2011-08-21 00:00:39 +02:00
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libs/transmissionrpc/client.py
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# -*- coding: utf-8 -*-
# Copyright (c) 2008-2010 Erik Svensson <erik.public@gmail.com>
# Licensed under the MIT license.
import os, re, time
import warnings
import httplib, urllib2, urlparse, base64
try:
import json
except ImportError:
import simplejson as json
from transmissionrpc.constants import DEFAULT_PORT, DEFAULT_TIMEOUT
from transmissionrpc.error import TransmissionError, HTTPHandlerError
from transmissionrpc.utils import LOGGER, get_arguments, make_rpc_name, argument_value_convert, rpc_bool
from transmissionrpc.httphandler import DefaultHTTPHandler
from transmissionrpc.torrent import Torrent
from transmissionrpc.session import Session
def debug_httperror(error):
"""
Log the Transmission RPC HTTP error.
"""
try:
data = json.loads(error.data)
except ValueError:
data = error.data
LOGGER.debug(
json.dumps(
{
'response': {
'url': error.url,
'code': error.code,
'msg': error.message,
'headers': error.headers,
'data': data,
}
},
indent=2
)
)
"""
Torrent ids
Many functions in Client takes torrent id. A torrent id can either be id or
hashString. When suppling multiple id's it is possible to use a list mixed
with both id and hashString.
Timeouts
Since most methods results in HTTP requests against Transmission, it is
possible to provide a argument called ``timeout``. Timeout is only effective
when using Python 2.6 or later and the default timeout is 30 seconds.
"""
class Client(object):
"""
Client is the class handling the Transmission JSON-RPC client protocol.
"""
def __init__(self, address='localhost', port=DEFAULT_PORT, user=None, password=None, http_handler=None, timeout=None):
if isinstance(timeout, (int, long, float)):
self._query_timeout = float(timeout)
else:
self._query_timeout = DEFAULT_TIMEOUT
urlo = urlparse.urlparse(address)
if urlo.scheme == '':
base_url = 'http://' + address + ':' + str(port)
self.url = base_url + '/transmission/rpc'
else:
if urlo.port:
self.url = urlo.scheme + '://' + urlo.hostname + ':' + str(urlo.port) + urlo.path
else:
self.url = urlo.scheme + '://' + urlo.hostname + urlo.path
LOGGER.info('Using custom URL "' + self.url + '".')
if urlo.username and urlo.password:
user = urlo.username
password = urlo.password
elif urlo.username or urlo.password:
LOGGER.warning('Either user or password missing, not using authentication.')
if http_handler == None:
self.http_handler = DefaultHTTPHandler()
else:
if hasattr(http_handler, 'set_authentication') and hasattr(http_handler, 'request'):
self.http_handler = http_handler
else:
raise ValueError('Invalid HTTP handler.')
if user and password:
self.http_handler.set_authentication(self.url, user, password)
elif user or password:
LOGGER.warning('Either user or password missing, not using authentication.')
self._sequence = 0
self.session = Session()
self.session_id = 0
self.server_version = None
self.protocol_version = None
self.get_session()
self.torrent_get_arguments = get_arguments('torrent-get'
, self.rpc_version)
def _get_timeout(self):
"""
Get current timeout for HTTP queries.
"""
return self._query_timeout
def _set_timeout(self, value):
"""
Set timeout for HTTP queries.
"""
self._query_timeout = float(value)
def _del_timeout(self):
"""
Reset the HTTP query timeout to the default.
"""
self._query_timeout = DEFAULT_TIMEOUT
timeout = property(_get_timeout, _set_timeout, _del_timeout, doc="HTTP query timeout.")
def _http_query(self, query, timeout=None):
"""
Query Transmission through HTTP.
"""
headers = {'x-transmission-session-id': str(self.session_id)}
request_count = 0
if timeout == None:
timeout = self._query_timeout
while True:
LOGGER.debug(json.dumps({'url': self.url, 'headers': headers, 'query': query, 'timeout': timeout}, indent=2))
try:
result = self.http_handler.request(self.url, query, headers, timeout)
break
except HTTPHandlerError, error:
if error.code == 409:
LOGGER.info('Server responded with 409, trying to set session-id.')
if request_count > 1:
raise TransmissionError('Session ID negotiation failed.', error)
if 'x-transmission-session-id' in error.headers:
self.session_id = error.headers['x-transmission-session-id']
headers = {'x-transmission-session-id': str(self.session_id)}
else:
debug_httperror(error)
raise TransmissionError('Unknown conflict.', error)
else:
debug_httperror(error)
raise TransmissionError('Request failed.', error)
request_count = request_count + 1
return result
def _request(self, method, arguments=None, ids=None, require_ids=False, timeout=None):
"""
Send json-rpc request to Transmission using http POST
"""
if not isinstance(method, (str, unicode)):
raise ValueError('request takes method as string')
if arguments == None:
arguments = {}
if not isinstance(arguments, dict):
raise ValueError('request takes arguments as dict')
ids = self._format_ids(ids)
if len(ids) > 0:
arguments['ids'] = ids
elif require_ids:
raise ValueError('request require ids')
query = json.dumps({'tag': self._sequence, 'method': method
, 'arguments': arguments})
self._sequence += 1
start = time.time()
http_data = self._http_query(query, timeout)
elapsed = time.time() - start
LOGGER.info('http request took %.3f s' % (elapsed))
try:
data = json.loads(http_data)
except ValueError, error:
LOGGER.error('Error: ' + str(error))
LOGGER.error('Request: \"%s\"' % (query))
LOGGER.error('HTTP data: \"%s\"' % (http_data))
raise
LOGGER.debug(json.dumps(data, indent=2))
if 'result' in data:
if data['result'] != 'success':
raise TransmissionError('Query failed with result \"%s\".' % (data['result']))
else:
raise TransmissionError('Query failed without result.')
results = {}
if method == 'torrent-get':
for item in data['arguments']['torrents']:
results[item['id']] = Torrent(self, item)
if self.protocol_version == 2 and 'peers' not in item:
self.protocol_version = 1
elif method == 'torrent-add':
item = data['arguments']['torrent-added']
results[item['id']] = Torrent(self, item)
elif method == 'session-get':
self._update_session(data['arguments'])
elif method == 'session-stats':
# older versions of T has the return data in "session-stats"
if 'session-stats' in data['arguments']:
self._update_session(data['arguments']['session-stats'])
else:
self._update_session(data['arguments'])
elif method in ('port-test', 'blocklist-update'):
results = data['arguments']
else:
return None
return results
def _format_ids(self, args):
"""
Take things and make them valid torrent identifiers
"""
ids = []
if args == None:
pass
elif isinstance(args, (int, long)):
ids.append(args)
elif isinstance(args, (str, unicode)):
for item in re.split(u'[ ,]+', args):
if len(item) == 0:
continue
addition = None
try:
# handle index
addition = [int(item)]
except ValueError:
pass
if not addition:
# handle hashes
try:
int(item, 16)
addition = [item]
except ValueError:
pass
if not addition:
# handle index ranges i.e. 5:10
match = re.match(u'^(\d+):(\d+)$', item)
if match:
try:
idx_from = int(match.group(1))
idx_to = int(match.group(2))
addition = range(idx_from, idx_to + 1)
except ValueError:
pass
if not addition:
raise ValueError(u'Invalid torrent id, \"%s\"' % item)
ids.extend(addition)
elif isinstance(args, (list)):
for item in args:
ids.extend(self._format_ids(item))
else:
raise ValueError(u'Invalid torrent id')
return ids
def _update_session(self, data):
"""
Update session data.
"""
self.session.update(data)
def _update_server_version(self):
if self.server_version == None:
version_major = 1
version_minor = 30
version_changeset = 0
version_parser = re.compile('(\d).(\d+) \((\d+)\)')
if hasattr(self.session, 'version'):
match = version_parser.match(self.session.version)
if (match):
version_major = int(match.group(1))
version_minor = int(match.group(2))
version_changeset = match.group(3)
self.server_version = (version_major, version_minor, version_changeset)
@property
def rpc_version(self):
"""
Get the Transmission RPC version. Trying to deduct if the server don't have a version value.
"""
if self.protocol_version == None:
# Ugly fix for 2.12 reporting rpc-version 10, but having new arguments
if (self.server_version and (self.server_version[0] == 2 and self.server_version[1] == 12)):
self.protocol_version = 11
elif hasattr(self.session, 'rpc_version'):
self.protocol_version = self.session.rpc_version
elif hasattr(self.session, 'version'):
self.protocol_version = 3
else:
self.protocol_version = 2
return self.protocol_version
def _rpc_version_warning(self, version):
"""
Add a warning to the log if the Transmission RPC version is lower then the provided version.
"""
if self.rpc_version < version:
LOGGER.warning('Using feature not supported by server. RPC version for server %d, feature introduced in %d.' % (self.rpc_version, version))
def add(self, data, timeout=None, **kwargs):
"""
Add torrent to transfers list. Takes a base64 encoded .torrent file in data.
Additional arguments are:
===================== ==== =============================================================
Argument RPC Description
===================== ==== =============================================================
``bandwidthPriority`` 8 - Priority for this transfer.
``download_dir`` 1 - The directory where the downloaded contents will be saved in.
``filename`` 1 - A filepath or URL to a torrent file or a magnet link.
``files_unwanted`` 1 - A list of file id's that shouldn't be downloaded.
``files_wanted`` 1 - A list of file id's that should be downloaded.
``metainfo`` 1 - The content of a torrent file, base64 encoded.
``paused`` 1 - If True, does not start the transfer when added.
``peer_limit`` 1 - Maximum number of peers allowed.
``priority_high`` 1 - A list of file id's that should have high priority.
``priority_low`` 1 - A list of file id's that should have low priority.
``priority_normal`` 1 - A list of file id's that should have normal priority.
===================== ==== =============================================================
"""
args = {}
if data:
args = {'metainfo': data}
elif 'metainfo' not in kwargs and 'filename' not in kwargs:
raise ValueError('No torrent data or torrent uri.')
for key, value in kwargs.iteritems():
argument = make_rpc_name(key)
(arg, val) = argument_value_convert('torrent-add',
argument, value, self.rpc_version)
args[arg] = val
return self._request('torrent-add', args, timeout=timeout)
def add_uri(self, uri, **kwargs):
"""
Add torrent to transfers list. Takes a uri to a torrent, supporting
all uri's supported by Transmissions torrent-add 'filename'
argument. Additional arguments are:
===================== ==== =============================================================
Argument RPC Description
===================== ==== =============================================================
``bandwidthPriority`` 8 - Priority for this transfer.
``download_dir`` 1 - The directory where the downloaded contents will be saved in.
``files_unwanted`` 1 - A list of file id's that shouldn't be downloaded.
``files_wanted`` 1 - A list of file id's that should be downloaded.
``paused`` 1 - If True, does not start the transfer when added.
``peer_limit`` 1 - Maximum number of peers allowed.
``priority_high`` 1 - A list of file id's that should have high priority.
``priority_low`` 1 - A list of file id's that should have low priority.
``priority_normal`` 1 - A list of file id's that should have normal priority.
===================== ==== =============================================================
"""
if uri == None:
raise ValueError('add_uri requires a URI.')
# there has been some problem with T's built in torrent fetcher,
# use a python one instead
parseduri = urlparse.urlparse(uri)
torrent_data = None
if parseduri.scheme in ['file', 'ftp', 'ftps', 'http', 'https']:
torrent_file = urllib2.urlopen(uri)
torrent_data = base64.b64encode(torrent_file.read())
if torrent_data:
return self.add(torrent_data, **kwargs)
else:
return self.add(None, filename=uri, **kwargs)
def remove(self, ids, delete_data=False, timeout=None):
"""
remove torrent(s) with provided id(s). Local data is removed if
delete_data is True, otherwise not.
"""
self._rpc_version_warning(3)
self._request('torrent-remove',
{'delete-local-data':rpc_bool(delete_data)}, ids, True, timeout=timeout)
def start(self, ids, timeout=None):
"""start torrent(s) with provided id(s)"""
self._request('torrent-start', {}, ids, True, timeout=timeout)
def stop(self, ids, timeout=None):
"""stop torrent(s) with provided id(s)"""
self._request('torrent-stop', {}, ids, True, timeout=timeout)
def verify(self, ids, timeout=None):
"""verify torrent(s) with provided id(s)"""
self._request('torrent-verify', {}, ids, True, timeout=timeout)
def reannounce(self, ids, timeout=None):
"""Reannounce torrent(s) with provided id(s)"""
self._rpc_version_warning(5)
self._request('torrent-reannounce', {}, ids, True, timeout=timeout)
def info(self, ids=None, arguments=None, timeout=None):
"""Get detailed information for torrent(s) with provided id(s)."""
if not arguments:
arguments = self.torrent_get_arguments
return self._request('torrent-get', {'fields': arguments}, ids, timeout=timeout)
def get_files(self, ids=None, timeout=None):
"""
Get list of files for provided torrent id(s). If ids is empty,
information for all torrents are fetched. This function returns a dictonary
for each requested torrent id holding the information about the files.
::
{
<torrent id>: {
<file id>: {
'name': <file name>,
'size': <file size in bytes>,
'completed': <bytes completed>,
'priority': <priority ('high'|'normal'|'low')>,
'selected': <selected for download (True|False)>
}
...
}
...
}
"""
fields = ['id', 'name', 'hashString', 'files', 'priorities', 'wanted']
request_result = self._request('torrent-get', {'fields': fields}, ids, timeout=timeout)
result = {}
for tid, torrent in request_result.iteritems():
result[tid] = torrent.files()
return result
def set_files(self, items, timeout=None):
"""
Set file properties. Takes a dictonary with similar contents as the result
of `get_files`.
::
{
<torrent id>: {
<file id>: {
'priority': <priority ('high'|'normal'|'low')>,
'selected': <selected for download (True|False)>
}
...
}
...
}
"""
if not isinstance(items, dict):
raise ValueError('Invalid file description')
for tid, files in items.iteritems():
if not isinstance(files, dict):
continue
wanted = []
unwanted = []
priority_high = []
priority_normal = []
priority_low = []
for fid, file_desc in files.iteritems():
if not isinstance(file_desc, dict):
continue
if 'selected' in file_desc and file_desc['selected']:
wanted.append(fid)
else:
unwanted.append(fid)
if 'priority' in file_desc:
if file_desc['priority'] == 'high':
priority_high.append(fid)
elif file_desc['priority'] == 'normal':
priority_normal.append(fid)
elif file_desc['priority'] == 'low':
priority_low.append(fid)
self.change([tid], files_wanted = wanted
, files_unwanted = unwanted
, priority_high = priority_high
, priority_normal = priority_normal
, priority_low = priority_low, timeout=timeout)
def list(self, timeout=None):
"""list all torrents"""
fields = ['id', 'hashString', 'name', 'sizeWhenDone', 'leftUntilDone'
, 'eta', 'status', 'rateUpload', 'rateDownload', 'uploadedEver'
, 'downloadedEver']
return self._request('torrent-get', {'fields': fields}, timeout=timeout)
def change(self, ids, timeout=None, **kwargs):
"""
Change torrent parameters for the torrent(s) with the supplied id's. The
parameters are:
============================ ===== =============== =======================================================================================
Argument RPC Replaced by Description
============================ ===== =============== =======================================================================================
``bandwidthPriority`` 5 - Priority for this transfer.
``downloadLimit`` 5 - Set the speed limit for download in Kib/s.
``downloadLimited`` 5 - Enable download speed limiter.
``files_unwanted`` 1 - A list of file id's that shouldn't be downloaded.
``files_wanted`` 1 - A list of file id's that should be downloaded.
``honorsSessionLimits`` 5 - Enables or disables the transfer to honour the upload limit set in the session.
``ids`` 1 - Local download location.
``peer_limit`` 1 - The peer limit for the torrents.
``priority_high`` 1 - A list of file id's that should have high priority.
``priority_low`` 1 - A list of file id's that should have normal priority.
``priority_normal`` 1 - A list of file id's that should have low priority.
``seedIdleLimit`` 10 - Seed inactivity limit in minutes.
``seedIdleMode`` 10 - Seed inactivity mode. 0 = Use session limit, 1 = Use transfer limit, 2 = Disable limit.
``seedRatioLimit`` 5 - Seeding ratio.
``seedRatioMode`` 5 - Which ratio to use. 0 = Use session limit, 1 = Use transfer limit, 2 = Disable limit.
``speed_limit_down`` 1 - 5 downloadLimit Set the speed limit for download in Kib/s.
``speed_limit_down_enabled`` 1 - 5 downloadLimited Enable download speed limiter.
``speed_limit_up`` 1 - 5 uploadLimit Set the speed limit for upload in Kib/s.
``speed_limit_up_enabled`` 1 - 5 uploadLimited Enable upload speed limiter.
``trackerAdd`` 10 - Array of string with announce URLs to add.
``trackerRemove`` 10 - Array of ids of trackers to remove.
``trackerReplace`` 10 - Array of (id, url) tuples where the announce URL should be replaced.
``uploadLimit`` 5 - Set the speed limit for upload in Kib/s.
``uploadLimited`` 5 - Enable upload speed limiter.
============================ ===== =============== =======================================================================================
.. NOTE::
transmissionrpc will try to automatically fix argument errors.
"""
args = {}
for key, value in kwargs.iteritems():
argument = make_rpc_name(key)
(arg, val) = argument_value_convert('torrent-set'
, argument, value, self.rpc_version)
args[arg] = val
if len(args) > 0:
self._request('torrent-set', args, ids, True, timeout=timeout)
else:
ValueError("No arguments to set")
def move(self, ids, location, timeout=None):
"""Move torrent data to the new location."""
self._rpc_version_warning(6)
args = {'location': location, 'move': True}
self._request('torrent-set-location', args, ids, True, timeout=timeout)
def locate(self, ids, location, timeout=None):
"""Locate torrent data at the location."""
self._rpc_version_warning(6)
args = {'location': location, 'move': False}
self._request('torrent-set-location', args, ids, True, timeout=timeout)
def get_session(self, timeout=None):
"""Get session parameters"""
self._request('session-get', timeout=timeout)
self._update_server_version()
return self.session
def set_session(self, timeout=None, **kwargs):
"""
Set session parameters. The parameters are:
================================ ===== ================= ==========================================================================================================================
Argument RPC Replaced by Description
================================ ===== ================= ==========================================================================================================================
``alt_speed_down`` 5 - Alternate session download speed limit (in Kib/s).
``alt_speed_enabled`` 5 - Enables alternate global download speed limiter.
``alt_speed_time_begin`` 5 - Time when alternate speeds should be enabled. Minutes after midnight.
``alt_speed_time_day`` 5 - Enables alternate speeds scheduling these days.
``alt_speed_time_enabled`` 5 - Enables alternate speeds scheduling.
``alt_speed_time_end`` 5 - Time when alternate speeds should be disabled. Minutes after midnight.
``alt_speed_up`` 5 - Alternate session upload speed limit (in Kib/s).
``blocklist_enabled`` 5 - Enables the block list
``cache_size_mb`` 10 - The maximum size of the disk cache in MB
``dht_enabled`` 6 - Enables DHT.
``download_dir`` 1 - Set the session download directory.
``encryption`` 1 - Set the session encryption mode, one of ``required``, ``preferred`` or ``tolerated``.
``idle_seeding_limit`` 10 - The default seed inactivity limit in minutes.
``idle_seeding_limit_enabled`` 10 - Enables the default seed inactivity limit
``incomplete_dir`` 7 - The path to the directory of incomplete transfer data.
``incomplete_dir_enabled`` 7 - Enables the incomplete transfer data directory. Otherwise data for incomplete transfers are stored in the download target.
``lpd_enabled`` 9 - Enables local peer discovery for public torrents.
``peer_limit`` 1 - 5 peer-limit-global Maximum number of peers
``peer_limit_global`` 5 - Maximum number of peers
``peer_limit_per_torrent`` 5 - Maximum number of peers per transfer
``peer_port`` 5 - Peer port.
``peer_port_random_on_start`` 5 - Enables randomized peer port on start of Transmission.
``pex_allowed`` 1 - 5 pex-enabled Allowing PEX in public torrents.
``pex_enabled`` 5 - Allowing PEX in public torrents.
``port`` 1 - 5 peer-port Peer port.
``port_forwarding_enabled`` 1 - Enables port forwarding.
``rename_partial_files`` 8 - Appends ".part" to incomplete files
``script_torrent_done_enabled`` 9 - Whether or not to call the "done" script.
``script_torrent_done_filename`` 9 - Filename of the script to run when the transfer is done.
``seedRatioLimit`` 5 - Seed ratio limit. 1.0 means 1:1 download and upload ratio.
``seedRatioLimited`` 5 - Enables seed ration limit.
``speed_limit_down`` 1 - Download speed limit (in Kib/s).
``speed_limit_down_enabled`` 1 - Enables download speed limiting.
``speed_limit_up`` 1 - Upload speed limit (in Kib/s).
``speed_limit_up_enabled`` 1 - Enables upload speed limiting.
``start_added_torrents`` 9 - Added torrents will be started right away.
``trash_original_torrent_files`` 9 - The .torrent file of added torrents will be deleted.
================================ ===== ================= ==========================================================================================================================
.. NOTE::
transmissionrpc will try to automatically fix argument errors.
"""
args = {}
for key, value in kwargs.iteritems():
if key == 'encryption' and value not in ['required', 'preferred', 'tolerated']:
raise ValueError('Invalid encryption value')
argument = make_rpc_name(key)
(arg, val) = argument_value_convert('session-set'
, argument, value, self.rpc_version)
args[arg] = val
if len(args) > 0:
self._request('session-set', args, timeout=timeout)
def blocklist_update(self, timeout=None):
"""Update block list. Returns the size of the block list."""
self._rpc_version_warning(5)
result = self._request('blocklist-update', timeout=timeout)
if 'blocklist-size' in result:
return result['blocklist-size']
return None
def port_test(self, timeout=None):
"""
Tests to see if your incoming peer port is accessible from the
outside world.
"""
self._rpc_version_warning(5)
result = self._request('port-test', timeout=timeout)
if 'port-is-open' in result:
return result['port-is-open']
return None
def session_stats(self, timeout=None):
"""Get session statistics"""
self._request('session-stats', timeout=timeout)
return self.session