hydrus/include/HydrusServerResources.py

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import HydrusConstants as HC
import HydrusExceptions
import HydrusFileHandling
import HydrusImageHandling
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import HydrusNetwork
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import HydrusPaths
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import HydrusSerialisable
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import os
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import time
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import traceback
from twisted.internet import reactor, defer
from twisted.internet.threads import deferToThread
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from twisted.web.server import NOT_DONE_YET
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from twisted.web.resource import Resource
from twisted.web.static import File as FileResource, NoRangeStaticProducer
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import HydrusData
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import HydrusGlobals as HG
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def GenerateEris( service, domain ):
name = service.GetName()
service_type = service.GetServiceType()
welcome_text_1 = 'This is <b>' + name + '</b>,'
welcome_text_2 = 'a ' + HC.service_string_lookup[ service_type ] + '.'
welcome_text_3 = 'Software version ' + str( HC.SOFTWARE_VERSION )
welcome_text_4 = 'Network version ' + str( HC.NETWORK_VERSION )
if domain.IsLocal():
welcome_text_5 = 'It only responds to requests from localhost.'
else:
welcome_text_5 = 'It responds to requests from any host.'
return '''<html><head><title>''' + name + '''</title></head><body><pre>
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</pre></body></html>'''
2013-10-02 22:06:06 +00:00
def ParseFileArguments( path ):
HydrusImageHandling.ConvertToPngIfBmp( path )
hash = HydrusFileHandling.GetHashFromPath( path )
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try:
( size, mime, width, height, duration, num_frames, num_words ) = HydrusFileHandling.GetFileInfo( path )
except HydrusExceptions.SizeException:
raise HydrusExceptions.ForbiddenException( 'File is of zero length!' )
except HydrusExceptions.MimeException:
raise HydrusExceptions.ForbiddenException( 'Filetype is not permitted!' )
except Exception as e:
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raise HydrusExceptions.ForbiddenException( HydrusData.ToUnicode( e ) )
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args = {}
args[ 'path' ] = path
args[ 'hash' ] = hash
args[ 'size' ] = size
args[ 'mime' ] = mime
if width is not None: args[ 'width' ] = width
if height is not None: args[ 'height' ] = height
if duration is not None: args[ 'duration' ] = duration
if num_frames is not None: args[ 'num_frames' ] = num_frames
if num_words is not None: args[ 'num_words' ] = num_words
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if mime in HC.MIMES_WITH_THUMBNAILS:
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try:
thumbnail = HydrusFileHandling.GenerateThumbnail( path )
except Exception as e:
tb = traceback.format_exc()
raise HydrusExceptions.ForbiddenException( 'Could not generate thumbnail from that file:' + os.linesep + tb )
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args[ 'thumbnail' ] = thumbnail
return args
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hydrus_favicon = FileResource( os.path.join( HC.STATIC_DIR, 'hydrus.ico' ), defaultType = 'image/x-icon' )
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class HydrusDomain( object ):
def __init__( self, local_only ):
self._local_only = local_only
def CheckValid( self, client_ip ):
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if self._local_only and client_ip != '127.0.0.1':
raise HydrusExceptions.ForbiddenException( 'Only local access allowed!' )
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def IsLocal( self ):
return self._local_only
class HydrusResource( Resource ):
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def __init__( self, service, domain ):
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Resource.__init__( self )
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self._service = service
self._service_key = self._service.GetServiceKey()
self._domain = domain
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service_type = self._service.GetServiceType()
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self._server_version_string = HC.service_string_lookup[ service_type ] + '/' + str( HC.NETWORK_VERSION )
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def _callbackCheckRestrictions( self, request ):
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self._domain.CheckValid( request.getClientIP() )
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self._checkService( request )
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self._checkUserAgent( request )
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return request
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def _checkService( self, request ):
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if HG.server_busy:
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raise HydrusExceptions.ServerBusyException( 'This server is busy, please try again later.' )
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return request
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def _checkUserAgent( self, request ):
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request.is_hydrus_user_agent = False
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if request.requestHeaders.hasHeader( 'User-Agent' ):
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user_agent_texts = request.requestHeaders.getRawHeaders( 'User-Agent' )
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user_agent_text = user_agent_texts[0]
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try:
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user_agents = user_agent_text.split( ' ' )
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except: return # crazy user agent string, so just assume not a hydrus client
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for user_agent in user_agents:
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if '/' in user_agent:
( client, network_version ) = user_agent.split( '/', 1 )
if client == 'hydrus':
request.is_hydrus_user_agent = True
network_version = int( network_version )
if network_version == HC.NETWORK_VERSION: return
else:
if network_version < HC.NETWORK_VERSION: message = 'Your client is out of date; please download the latest release.'
else: message = 'This server is out of date; please ask its admin to update to the latest release.'
raise HydrusExceptions.NetworkVersionException( 'Network version mismatch! This server\'s network version is ' + str( HC.NETWORK_VERSION ) + ', whereas your client\'s is ' + str( network_version ) + '! ' + message )
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def _callbackParseGETArgs( self, request ):
hydrus_args = HydrusNetwork.ParseGETArgs( request.args )
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request.hydrus_args = hydrus_args
return request
def _callbackParsePOSTArgs( self, request ):
request.content.seek( 0 )
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if not request.requestHeaders.hasHeader( 'Content-Type' ):
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hydrus_args = {}
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else:
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content_types = request.requestHeaders.getRawHeaders( 'Content-Type' )
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content_type = content_types[0]
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try:
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mime = HC.mime_enum_lookup[ content_type ]
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except:
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raise HydrusExceptions.ForbiddenException( 'Did not recognise Content-Type header!' )
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total_bytes_read = 0
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if mime == HC.APPLICATION_JSON:
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json_string = request.content.read()
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total_bytes_read += len( json_string )
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hydrus_args = HydrusNetwork.ParseBodyString( json_string )
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else:
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( os_file_handle, temp_path ) = HydrusPaths.GetTempPath()
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request.temp_file_info = ( os_file_handle, temp_path )
with open( temp_path, 'wb' ) as f:
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for block in HydrusPaths.ReadFileLikeAsBlocks( request.content ):
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f.write( block )
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total_bytes_read += len( block )
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2013-10-02 22:06:06 +00:00
2015-09-16 18:11:00 +00:00
hydrus_args = ParseFileArguments( temp_path )
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self._reportDataUsed( request, total_bytes_read )
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request.hydrus_args = hydrus_args
return request
def _callbackRenderResponseContext( self, request ):
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self._CleanUpTempFile( request )
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response_context = request.hydrus_response_context
status_code = response_context.GetStatusCode()
request.setResponseCode( status_code )
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for ( k, v, kwargs ) in response_context.GetCookies():
request.addCookie( k, v, **kwargs )
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do_finish = True
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if response_context.HasPath():
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path = response_context.GetPath()
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size = os.path.getsize( path )
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mime = response_context.GetMime()
if mime == HC.APPLICATION_UNKNOWN:
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mime = HydrusFileHandling.GetMime( path )
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content_type = HC.mime_string_lookup[ mime ]
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content_length = size
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( base, filename ) = os.path.split( path )
content_disposition = 'inline; filename="' + filename + '"'
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# can't be unicode!
request.setHeader( 'Content-Type', str( content_type ) )
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request.setHeader( 'Content-Length', str( content_length ) )
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request.setHeader( 'Content-Disposition', str( content_disposition ) )
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2014-07-16 20:50:18 +00:00
request.setHeader( 'Expires', time.strftime( '%a, %d %b %Y %H:%M:%S GMT', time.gmtime( time.time() + 86400 * 365 ) ) )
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request.setHeader( 'Cache-Control', str( 86400 * 365 ) )
2014-07-16 20:50:18 +00:00
2013-10-02 22:06:06 +00:00
fileObject = open( path, 'rb' )
producer = NoRangeStaticProducer( request, fileObject )
producer.start()
do_finish = False
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elif response_context.HasBody():
mime = response_context.GetMime()
body = response_context.GetBody()
content_type = HC.mime_string_lookup[ mime ]
content_length = len( body )
content_disposition = 'inline'
request.setHeader( 'Content-Type', content_type )
request.setHeader( 'Content-Length', str( content_length ) )
request.setHeader( 'Content-Disposition', content_disposition )
request.write( HydrusData.ToByteString( body ) )
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else:
content_length = 0
request.setHeader( 'Content-Length', str( content_length ) )
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self._reportDataUsed( request, content_length )
self._reportRequestUsed( request )
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if do_finish:
request.finish()
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def _callbackDoGETJob( self, request ):
def wrap_thread_result( response_context ):
request.hydrus_response_context = response_context
return request
d = deferToThread( self._threadDoGETJob, request )
d.addCallback( wrap_thread_result )
return d
def _callbackDoPOSTJob( self, request ):
def wrap_thread_result( response_context ):
request.hydrus_response_context = response_context
return request
d = deferToThread( self._threadDoPOSTJob, request )
d.addCallback( wrap_thread_result )
return d
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def _errbackDisconnected( self, failure, request_deferred ):
request_deferred.cancel()
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def _errbackHandleEmergencyError( self, failure, request ):
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try: self._CleanUpTempFile( request )
except: pass
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try: HydrusData.DebugPrint( failure.getTraceback() )
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except: pass
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try: request.write( failure.getTraceback() )
except: pass
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try: request.finish()
except: pass
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def _errbackHandleProcessingError( self, failure, request ):
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self._CleanUpTempFile( request )
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default_mime = HC.TEXT_HTML
default_encoding = HydrusData.ToByteString
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if failure.type == KeyError:
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response_context = ResponseContext( 400, mime = default_mime, body = default_encoding( 'It appears one or more parameters required for that request were missing:' + os.linesep + failure.getTraceback() ) )
2014-01-01 20:01:00 +00:00
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elif failure.type == HydrusExceptions.BandwidthException:
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response_context = ResponseContext( 509, mime = default_mime, body = default_encoding( failure.value ) )
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elif failure.type == HydrusExceptions.PermissionException:
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response_context = ResponseContext( 401, mime = default_mime, body = default_encoding( failure.value ) )
elif failure.type == HydrusExceptions.ForbiddenException:
response_context = ResponseContext( 403, mime = default_mime, body = default_encoding( failure.value ) )
elif failure.type in ( HydrusExceptions.NotFoundException, HydrusExceptions.DataMissing ):
response_context = ResponseContext( 404, mime = default_mime, body = default_encoding( failure.value ) )
elif failure.type == HydrusExceptions.NetworkVersionException:
response_context = ResponseContext( 426, mime = default_mime, body = default_encoding( failure.value ) )
elif failure.type == HydrusExceptions.ServerBusyException:
response_context = ResponseContext( 503, mime = default_mime, body = default_encoding( failure.value ) )
elif failure.type == HydrusExceptions.SessionException:
response_context = ResponseContext( 419, mime = default_mime, body = default_encoding( failure.value ) )
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else:
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HydrusData.DebugPrint( failure.getTraceback() )
2013-10-02 22:06:06 +00:00
2015-03-25 22:04:19 +00:00
response_context = ResponseContext( 500, mime = default_mime, body = default_encoding( 'The repository encountered an error it could not handle! Here is a dump of what happened, which will also be written to your client.log file. If it persists, please forward it to hydrus.admin@gmail.com:' + os.linesep * 2 + failure.getTraceback() ) )
2013-10-02 22:06:06 +00:00
request.hydrus_response_context = response_context
return request
def _parseAccessKey( self, request ):
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if not request.requestHeaders.hasHeader( 'Hydrus-Key' ):
raise HydrusExceptions.PermissionException( 'No hydrus key header found!' )
2013-10-02 22:06:06 +00:00
hex_keys = request.requestHeaders.getRawHeaders( 'Hydrus-Key' )
hex_key = hex_keys[0]
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try:
access_key = hex_key.decode( 'hex' )
except:
raise HydrusExceptions.ForbiddenException( 'Could not parse the hydrus key!' )
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return access_key
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def _reportDataUsed( self, request, num_bytes ):
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2017-06-21 21:15:59 +00:00
self._service.ReportDataUsed( num_bytes )
HG.controller.ReportDataUsed( num_bytes )
def _reportRequestUsed( self, request ):
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self._service.ReportRequestUsed()
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2017-06-21 21:15:59 +00:00
HG.controller.ReportRequestUsed()
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2013-10-02 22:06:06 +00:00
2017-05-31 21:50:53 +00:00
def _threadDoGETJob( self, request ):
raise HydrusExceptions.NotFoundException( 'This service does not support that request!' )
2013-10-02 22:06:06 +00:00
2017-05-31 21:50:53 +00:00
def _threadDoPOSTJob( self, request ):
raise HydrusExceptions.NotFoundException( 'This service does not support that request!' )
2013-10-02 22:06:06 +00:00
2015-03-25 22:04:19 +00:00
def _CleanUpTempFile( self, request ):
if hasattr( request, 'temp_file_info' ):
( os_file_handle, temp_path ) = request.temp_file_info
2015-11-04 22:30:28 +00:00
HydrusPaths.CleanUpTempPath( os_file_handle, temp_path )
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2015-08-12 20:35:24 +00:00
del request.temp_file_info
2015-03-25 22:04:19 +00:00
2013-10-02 22:06:06 +00:00
def render_GET( self, request ):
request.setHeader( 'Server', self._server_version_string )
d = defer.Deferred()
d.addCallback( self._callbackCheckRestrictions )
d.addCallback( self._callbackParseGETArgs )
d.addCallback( self._callbackDoGETJob )
d.addErrback( self._errbackHandleProcessingError, request )
d.addCallback( self._callbackRenderResponseContext )
d.addErrback( self._errbackHandleEmergencyError, request )
reactor.callLater( 0, d.callback, request )
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request.notifyFinish().addErrback( self._errbackDisconnected, d )
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return NOT_DONE_YET
def render_POST( self, request ):
request.setHeader( 'Server', self._server_version_string )
d = defer.Deferred()
d.addCallback( self._callbackCheckRestrictions )
d.addCallback( self._callbackParsePOSTArgs )
d.addCallback( self._callbackDoPOSTJob )
d.addErrback( self._errbackHandleProcessingError, request )
d.addCallback( self._callbackRenderResponseContext )
d.addErrback( self._errbackHandleEmergencyError, request )
reactor.callLater( 0, d.callback, request )
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request.notifyFinish().addErrback( self._errbackDisconnected, d )
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return NOT_DONE_YET
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class HydrusResourceRobotsTXT( HydrusResource ):
def _threadDoGETJob( self, request ):
body = '''User-agent: *
Disallow: /'''
response_context = ResponseContext( 200, mime = HC.TEXT_PLAIN, body = body )
return response_context
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class HydrusResourceWelcome( HydrusResource ):
def _threadDoGETJob( self, request ):
body = GenerateEris( self._service, self._domain )
response_context = ResponseContext( 200, mime = HC.TEXT_HTML, body = body )
return response_context
2015-03-25 22:04:19 +00:00
class ResponseContext( object ):
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def __init__( self, status_code, mime = HC.APPLICATION_JSON, body = None, path = None, cookies = None ):
if isinstance( body, HydrusSerialisable.SerialisableBase ):
body = body.DumpToNetworkString()
2015-03-25 22:04:19 +00:00
2017-03-02 02:14:56 +00:00
if cookies is None:
cookies = []
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self._status_code = status_code
self._mime = mime
self._body = body
self._path = path
self._cookies = cookies
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def GetBody( self ):
return self._body
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def GetCookies( self ): return self._cookies
def GetLength( self ): return len( self._body )
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def GetMime( self ): return self._mime
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def GetPath( self ): return self._path
def GetStatusCode( self ): return self._status_code
def HasBody( self ): return self._body is not None
def HasPath( self ): return self._path is not None