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ConnectionError = ProtocolError # Leaf Exceptions class MaxRetryError(RequestError): """Raised when the maximum number of retries is exceeded. :param pool: The connection pool :type pool: :class:`~urllib3.connectionpool.HTTPConnectionPool` :param string url: The requested Url :param exceptions.Exception reason: The underlying error """ def __init__(self, pool, url, reason=None): self.reason = reason message = "Max retries exceeded with url: %s (Caused by %r)" % ( url, reason) RequestError.__init__(self, pool, url, message) class HostChangedError(RequestError): "Raised when an existing pool gets a request for a foreign host." def __init__(self, pool, url, retries=3): message = "Tried to open a foreign host with url: %s" % url RequestError.__init__(self, pool, url, message) self.retries = retries class TimeoutStateError(HTTPError): """ Raised when passing an invalid state to a timeout """ pass class TimeoutError(HTTPError): """ Raised when a socket timeout error occurs. Catching this error will catch both :exc:`ReadTimeoutErrors ` and :exc:`ConnectTimeoutErrors `. """ pass class ReadTimeoutError(TimeoutError, RequestError): "Raised when a socket timeout occurs while receiving data from a server" pass # This timeout error does not have a URL attached and needs to inherit from the # base HTTPError class ConnectTimeoutError(TimeoutError): "Raised when a socket timeout occurs while connecting to a server" pass class NewConnectionError(ConnectTimeoutError, PoolError): "Raised when we fail to establish a new connection. Usually ECONNREFUSED." pass class EmptyPoolError(PoolError): "Raised when a pool runs out of connections and no more are allowed." pass class ClosedPoolError(PoolError): "Raised when a request enters a pool after the pool has been closed." pass class LocationValueError(ValueError, HTTPError): "Raised when there is something wrong with a given URL input." pass class LocationParseError(LocationValueError): "Raised when get_host or similar fails to parse the URL input." def __init__(self, location): message = "Failed to parse: %s" % location HTTPError.__init__(self, message) self.location = location class ResponseError(HTTPError): "Used as a container for an error reason supplied in a MaxRetryError." GENERIC_ERROR = 'too many error responses' SPECIFIC_ERROR = 'too many {status_code} error responses' class SecurityWarning(HTTPWarning): "Warned when performing security reducing actions" pass class SubjectAltNameWarning(SecurityWarning): "Warned when connecting to a host with a certificate missing a SAN." pass class InsecureRequestWarning(SecurityWarning): "Warned when making an unverified HTTPS request." pass class SystemTimeWarning(SecurityWarning): "Warned when system time is suspected to be wrong" pass class InsecurePlatformWarning(SecurityWarning): "Warned when certain SSL configuration is not available on a platform." pass class SNIMissingWarning(HTTPWarning): "Warned when making a HTTPS request without SNI available." pass class DependencyWarning(HTTPWarning): """ Warned when an attempt is made to import a module with missing optional dependencies. """ pass class ResponseNotChunked(ProtocolError, ValueError): "Response needs to be chunked in order to read it as chunks." pass class BodyNotHttplibCompatible(HTTPError): """ Body should be httplib.HTTPResponse like (have an fp attribute which returns raw chunks) for read_chunked(). """ pass class IncompleteRead(HTTPError, httplib_IncompleteRead): """ Response length doesn't match expected Content-Length Subclass of http_client.IncompleteRead to allow int value for `partial` to avoid creating large objects on streamed reads. """ def __init__(self, partial, expected): super(IncompleteRead, self).__init__(partial, expected) def __repr__(self): return ('IncompleteRead(%i bytes read, ' '%i more expected)' % (self.partial, self.expected)) class InvalidHeader(HTTPError): "The header provided was somehow invalid." pass class ProxySchemeUnknown(AssertionError, ValueError): "ProxyManager does not support the supplied scheme" # TODO(t-8ch): Stop inheriting from AssertionError in v2.0. def __init__(self, scheme): message = "Not supported proxy scheme %s" % scheme super(ProxySchemeUnknown, self).__init__(message) class HeaderParsingError(HTTPError): "Raised by assert_header_parsing, but we convert it to a log.warning statement." def __init__(self, defects, unparsed_data): message = '%s, unparsed data: %r' % (defects or 'Unknown', unparsed_data) super(HeaderParsingError, self).__init__(message) class UnrewindableBodyError(HTTPError): "urllib3 encountered an error when trying to rewind a body" pass usr/lib/python2.7/site-packages/pip/exceptions.py000064400000017671152672470700015764 0ustar00"""Exceptions used throughout package""" from __future__ import absolute_import from itertools import chain, groupby, repeat from pip._vendor.six import iteritems class PipError(Exception): """Base pip exception""" class InstallationError(PipError): """General exception during installation""" class UninstallationError(PipError): """General exception during uninstallation""" class DistributionNotFound(InstallationError): """Raised when a distribution cannot be found to satisfy a requirement""" class RequirementsFileParseError(InstallationError): """Raised when a general error occurs parsing a requirements file line.""" class BestVersionAlreadyInstalled(PipError): """Raised when the most up-to-date version of a package is already installed.""" class BadCommand(PipError): """Raised when virtualenv or a command is not found""" class CommandError(PipError): """Raised when there is an error in command-line arguments""" class PreviousBuildDirError(PipError): """Raised when there's a previous conflicting build directory""" class InvalidWheelFilename(InstallationError): """Invalid wheel filename.""" class UnsupportedWheel(InstallationError): """Unsupported wheel.""" class HashErrors(InstallationError): """Multiple HashError instances rolled into one for reporting""" def __init__(self): self.errors = [] def append(self, error): self.errors.append(error) def __str__(self): lines = [] self.errors.sort(key=lambda e: e.order) for cls, errors_of_cls in groupby(self.errors, lambda e: e.__class__): lines.append(cls.head) lines.extend(e.body() for e in errors_of_cls) if lines: return '\n'.join(lines) def __nonzero__(self): return bool(self.errors) def __bool__(self): return self.__nonzero__() class HashError(InstallationError): """ A failure to verify a package against known-good hashes :cvar order: An int sorting hash exception classes by difficulty of recovery (lower being harder), so the user doesn't bother fretting about unpinned packages when he has deeper issues, like VCS dependencies, to deal with. Also keeps error reports in a deterministic order. :cvar head: A section heading for display above potentially many exceptions of this kind :ivar req: The InstallRequirement that triggered this error. This is pasted on after the exception is instantiated, because it's not typically available earlier. """ req = None head = '' def body(self): """Return a summary of me for display under the heading. This default implementation simply prints a description of the triggering requirement. :param req: The InstallRequirement that provoked this error, with populate_link() having already been called """ return ' %s' % self._requirement_name() def __str__(self): return '%s\n%s' % (self.head, self.body()) def _requirement_name(self): """Return a description of the requirement that triggered me. This default implementation returns long description of the req, with line numbers """ return str(self.req) if self.req else 'unknown package' class VcsHashUnsupported(HashError): """A hash was provided for a version-control-system-based requirement, but we don't have a method for hashing those.""" order = 0 head = ("Can't verify hashes for these requirements because we don't " "have a way to hash version control repositories:") class DirectoryUrlHashUnsupported(HashError): """A hash was provided for a version-control-system-based requirement, but we don't have a method for hashing those.""" order = 1 head = ("Can't verify hashes for these file:// requirements because they " "point to directories:") class HashMissing(HashError): """A hash was needed for a requirement but is absent.""" order = 2 head = ('Hashes are required in --require-hashes mode, but they are ' 'missing from some requirements. Here is a list of those ' 'requirements along with the hashes their downloaded archives ' 'actually had. Add lines like these to your requirements files to ' 'prevent tampering. (If you did not enable --require-hashes ' 'manually, note that it turns on automatically when any package ' 'has a hash.)') def __init__(self, gotten_hash): """ :param gotten_hash: The hash of the (possibly malicious) archive we just downloaded """ self.gotten_hash = gotten_hash def body(self): from pip.utils.hashes import FAVORITE_HASH # Dodge circular import. package = None if self.req: # In the case of URL-based requirements, display the original URL # seen in the requirements file rather than the package name, # so the output can be directly copied into the requirements file. package = (self.req.original_link if self.req.original_link # In case someone feeds something downright stupid # to InstallRequirement's constructor. else getattr(self.req, 'req', None)) return ' %s --hash=%s:%s' % (package or 'unknown package', FAVORITE_HASH, self.gotten_hash) class HashUnpinned(HashError): """A requirement had a hash specified but was not pinned to a specific version.""" order = 3 head = ('In --require-hashes mode, all requirements must have their ' 'versions pinned with ==. These do not:') class HashMismatch(HashError): """ Distribution file hash values don't match. :ivar package_name: The name of the package that triggered the hash mismatch. Feel free to write to this after the exception is raise to improve its error message. """ order = 4 head = ('THESE PACKAGES DO NOT MATCH THE HASHES FROM THE REQUIREMENTS ' 'FILE. If you have updated the package versions, please update ' 'the hashes. Otherwise, examine the package contents carefully; ' 'someone may have tampered with them.') def __init__(self, allowed, gots): """ :param allowed: A dict of algorithm names pointing to lists of allowed hex digests :param gots: A dict of algorithm names pointing to hashes we actually got from the files under suspicion """ self.allowed = allowed self.gots = gots def body(self): return ' %s:\n%s' % (self._requirement_name(), self._hash_comparison()) def _hash_comparison(self): """ Return a comparison of actual and expected hash values. Example:: Expected sha256 abcdeabcdeabcdeabcdeabcdeabcdeabcdeabcdeabcde or 123451234512345123451234512345123451234512345 Got bcdefbcdefbcdefbcdefbcdefbcdefbcdefbcdefbcdef """ def hash_then_or(hash_name): # For now, all the decent hashes have 6-char names, so we can get # away with hard-coding space literals. return chain([hash_name], repeat(' or')) lines = [] for hash_name, expecteds in iteritems(self.allowed): prefix = hash_then_or(hash_name) lines.extend((' Expected %s %s' % (next(prefix), e)) for e in expecteds) lines.append(' Got %s\n' % self.gots[hash_name].hexdigest()) prefix = ' or' return '\n'.join(lines) class UnsupportedPythonVersion(InstallationError): """Unsupported python version according to Requires-Python package metadata."""