450 lines
16 KiB
Python
450 lines
16 KiB
Python
"""PipSession and supporting code, containing all pip-specific
|
|
network request configuration and behavior.
|
|
"""
|
|
|
|
# When mypy runs on Windows the call to distro.linux_distribution() is skipped
|
|
# resulting in the failure:
|
|
#
|
|
# error: unused 'type: ignore' comment
|
|
#
|
|
# If the upstream module adds typing, this comment should be removed. See
|
|
# https://github.com/nir0s/distro/pull/269
|
|
#
|
|
# mypy: warn-unused-ignores=False
|
|
|
|
import email.utils
|
|
import ipaddress
|
|
import json
|
|
import logging
|
|
import mimetypes
|
|
import os
|
|
import platform
|
|
import sys
|
|
import urllib.parse
|
|
import warnings
|
|
from typing import Any, Dict, Iterator, List, Mapping, Optional, Sequence, Tuple, Union
|
|
|
|
from pip._vendor import requests, urllib3
|
|
from pip._vendor.cachecontrol import CacheControlAdapter
|
|
from pip._vendor.requests.adapters import BaseAdapter, HTTPAdapter
|
|
from pip._vendor.requests.models import PreparedRequest, Response
|
|
from pip._vendor.requests.structures import CaseInsensitiveDict
|
|
from pip._vendor.urllib3.connectionpool import ConnectionPool
|
|
from pip._vendor.urllib3.exceptions import InsecureRequestWarning
|
|
|
|
from pip import __version__
|
|
from pip._internal.metadata import get_default_environment
|
|
from pip._internal.models.link import Link
|
|
from pip._internal.network.auth import MultiDomainBasicAuth
|
|
from pip._internal.network.cache import SafeFileCache
|
|
|
|
# Import ssl from compat so the initial import occurs in only one place.
|
|
from pip._internal.utils.compat import has_tls
|
|
from pip._internal.utils.glibc import libc_ver
|
|
from pip._internal.utils.misc import build_url_from_netloc, parse_netloc
|
|
from pip._internal.utils.urls import url_to_path
|
|
|
|
logger = logging.getLogger(__name__)
|
|
|
|
SecureOrigin = Tuple[str, str, Optional[Union[int, str]]]
|
|
|
|
|
|
# Ignore warning raised when using --trusted-host.
|
|
warnings.filterwarnings("ignore", category=InsecureRequestWarning)
|
|
|
|
|
|
SECURE_ORIGINS = [
|
|
# protocol, hostname, port
|
|
# Taken from Chrome's list of secure origins (See: http://bit.ly/1qrySKC)
|
|
("https", "*", "*"),
|
|
("*", "localhost", "*"),
|
|
("*", "127.0.0.0/8", "*"),
|
|
("*", "::1/128", "*"),
|
|
("file", "*", None),
|
|
# ssh is always secure.
|
|
("ssh", "*", "*"),
|
|
] # type: List[SecureOrigin]
|
|
|
|
|
|
# These are environment variables present when running under various
|
|
# CI systems. For each variable, some CI systems that use the variable
|
|
# are indicated. The collection was chosen so that for each of a number
|
|
# of popular systems, at least one of the environment variables is used.
|
|
# This list is used to provide some indication of and lower bound for
|
|
# CI traffic to PyPI. Thus, it is okay if the list is not comprehensive.
|
|
# For more background, see: https://github.com/pypa/pip/issues/5499
|
|
CI_ENVIRONMENT_VARIABLES = (
|
|
# Azure Pipelines
|
|
'BUILD_BUILDID',
|
|
# Jenkins
|
|
'BUILD_ID',
|
|
# AppVeyor, CircleCI, Codeship, Gitlab CI, Shippable, Travis CI
|
|
'CI',
|
|
# Explicit environment variable.
|
|
'PIP_IS_CI',
|
|
)
|
|
|
|
|
|
def looks_like_ci():
|
|
# type: () -> bool
|
|
"""
|
|
Return whether it looks like pip is running under CI.
|
|
"""
|
|
# We don't use the method of checking for a tty (e.g. using isatty())
|
|
# because some CI systems mimic a tty (e.g. Travis CI). Thus that
|
|
# method doesn't provide definitive information in either direction.
|
|
return any(name in os.environ for name in CI_ENVIRONMENT_VARIABLES)
|
|
|
|
|
|
def user_agent():
|
|
# type: () -> str
|
|
"""
|
|
Return a string representing the user agent.
|
|
"""
|
|
data = {
|
|
"installer": {"name": "pip", "version": __version__},
|
|
"python": platform.python_version(),
|
|
"implementation": {
|
|
"name": platform.python_implementation(),
|
|
},
|
|
} # type: Dict[str, Any]
|
|
|
|
if data["implementation"]["name"] == 'CPython':
|
|
data["implementation"]["version"] = platform.python_version()
|
|
elif data["implementation"]["name"] == 'PyPy':
|
|
pypy_version_info = sys.pypy_version_info # type: ignore
|
|
if pypy_version_info.releaselevel == 'final':
|
|
pypy_version_info = pypy_version_info[:3]
|
|
data["implementation"]["version"] = ".".join(
|
|
[str(x) for x in pypy_version_info]
|
|
)
|
|
elif data["implementation"]["name"] == 'Jython':
|
|
# Complete Guess
|
|
data["implementation"]["version"] = platform.python_version()
|
|
elif data["implementation"]["name"] == 'IronPython':
|
|
# Complete Guess
|
|
data["implementation"]["version"] = platform.python_version()
|
|
|
|
if sys.platform.startswith("linux"):
|
|
from pip._vendor import distro
|
|
|
|
# https://github.com/nir0s/distro/pull/269
|
|
linux_distribution = distro.linux_distribution() # type: ignore
|
|
distro_infos = dict(filter(
|
|
lambda x: x[1],
|
|
zip(["name", "version", "id"], linux_distribution),
|
|
))
|
|
libc = dict(filter(
|
|
lambda x: x[1],
|
|
zip(["lib", "version"], libc_ver()),
|
|
))
|
|
if libc:
|
|
distro_infos["libc"] = libc
|
|
if distro_infos:
|
|
data["distro"] = distro_infos
|
|
|
|
if sys.platform.startswith("darwin") and platform.mac_ver()[0]:
|
|
data["distro"] = {"name": "macOS", "version": platform.mac_ver()[0]}
|
|
|
|
if platform.system():
|
|
data.setdefault("system", {})["name"] = platform.system()
|
|
|
|
if platform.release():
|
|
data.setdefault("system", {})["release"] = platform.release()
|
|
|
|
if platform.machine():
|
|
data["cpu"] = platform.machine()
|
|
|
|
if has_tls():
|
|
import _ssl as ssl
|
|
data["openssl_version"] = ssl.OPENSSL_VERSION
|
|
|
|
setuptools_dist = get_default_environment().get_distribution("setuptools")
|
|
if setuptools_dist is not None:
|
|
data["setuptools_version"] = str(setuptools_dist.version)
|
|
|
|
# Use None rather than False so as not to give the impression that
|
|
# pip knows it is not being run under CI. Rather, it is a null or
|
|
# inconclusive result. Also, we include some value rather than no
|
|
# value to make it easier to know that the check has been run.
|
|
data["ci"] = True if looks_like_ci() else None
|
|
|
|
user_data = os.environ.get("PIP_USER_AGENT_USER_DATA")
|
|
if user_data is not None:
|
|
data["user_data"] = user_data
|
|
|
|
return "{data[installer][name]}/{data[installer][version]} {json}".format(
|
|
data=data,
|
|
json=json.dumps(data, separators=(",", ":"), sort_keys=True),
|
|
)
|
|
|
|
|
|
class LocalFSAdapter(BaseAdapter):
|
|
|
|
def send(
|
|
self,
|
|
request, # type: PreparedRequest
|
|
stream=False, # type: bool
|
|
timeout=None, # type: Optional[Union[float, Tuple[float, float]]]
|
|
verify=True, # type: Union[bool, str]
|
|
cert=None, # type: Optional[Union[str, Tuple[str, str]]]
|
|
proxies=None, # type:Optional[Mapping[str, str]]
|
|
):
|
|
# type: (...) -> Response
|
|
pathname = url_to_path(request.url)
|
|
|
|
resp = Response()
|
|
resp.status_code = 200
|
|
resp.url = request.url
|
|
|
|
try:
|
|
stats = os.stat(pathname)
|
|
except OSError as exc:
|
|
resp.status_code = 404
|
|
resp.raw = exc
|
|
else:
|
|
modified = email.utils.formatdate(stats.st_mtime, usegmt=True)
|
|
content_type = mimetypes.guess_type(pathname)[0] or "text/plain"
|
|
resp.headers = CaseInsensitiveDict({
|
|
"Content-Type": content_type,
|
|
"Content-Length": stats.st_size,
|
|
"Last-Modified": modified,
|
|
})
|
|
|
|
resp.raw = open(pathname, "rb")
|
|
resp.close = resp.raw.close
|
|
|
|
return resp
|
|
|
|
def close(self):
|
|
# type: () -> None
|
|
pass
|
|
|
|
|
|
class InsecureHTTPAdapter(HTTPAdapter):
|
|
|
|
def cert_verify(
|
|
self,
|
|
conn, # type: ConnectionPool
|
|
url, # type: str
|
|
verify, # type: Union[bool, str]
|
|
cert, # type: Optional[Union[str, Tuple[str, str]]]
|
|
):
|
|
# type: (...) -> None
|
|
super().cert_verify(conn=conn, url=url, verify=False, cert=cert)
|
|
|
|
|
|
class InsecureCacheControlAdapter(CacheControlAdapter):
|
|
|
|
def cert_verify(
|
|
self,
|
|
conn, # type: ConnectionPool
|
|
url, # type: str
|
|
verify, # type: Union[bool, str]
|
|
cert, # type: Optional[Union[str, Tuple[str, str]]]
|
|
):
|
|
# type: (...) -> None
|
|
super().cert_verify(conn=conn, url=url, verify=False, cert=cert)
|
|
|
|
|
|
class PipSession(requests.Session):
|
|
|
|
timeout = None # type: Optional[int]
|
|
|
|
def __init__(
|
|
self,
|
|
*args, # type: Any
|
|
retries=0, # type: int
|
|
cache=None, # type: Optional[str]
|
|
trusted_hosts=(), # type: Sequence[str]
|
|
index_urls=None, # type: Optional[List[str]]
|
|
**kwargs, # type: Any
|
|
):
|
|
# type: (...) -> None
|
|
"""
|
|
:param trusted_hosts: Domains not to emit warnings for when not using
|
|
HTTPS.
|
|
"""
|
|
super().__init__(*args, **kwargs)
|
|
|
|
# Namespace the attribute with "pip_" just in case to prevent
|
|
# possible conflicts with the base class.
|
|
self.pip_trusted_origins = [] # type: List[Tuple[str, Optional[int]]]
|
|
|
|
# Attach our User Agent to the request
|
|
self.headers["User-Agent"] = user_agent()
|
|
|
|
# Attach our Authentication handler to the session
|
|
self.auth = MultiDomainBasicAuth(index_urls=index_urls)
|
|
|
|
# Create our urllib3.Retry instance which will allow us to customize
|
|
# how we handle retries.
|
|
retries = urllib3.Retry(
|
|
# Set the total number of retries that a particular request can
|
|
# have.
|
|
total=retries,
|
|
|
|
# A 503 error from PyPI typically means that the Fastly -> Origin
|
|
# connection got interrupted in some way. A 503 error in general
|
|
# is typically considered a transient error so we'll go ahead and
|
|
# retry it.
|
|
# A 500 may indicate transient error in Amazon S3
|
|
# A 520 or 527 - may indicate transient error in CloudFlare
|
|
status_forcelist=[500, 503, 520, 527],
|
|
|
|
# Add a small amount of back off between failed requests in
|
|
# order to prevent hammering the service.
|
|
backoff_factor=0.25,
|
|
) # type: ignore
|
|
|
|
# Our Insecure HTTPAdapter disables HTTPS validation. It does not
|
|
# support caching so we'll use it for all http:// URLs.
|
|
# If caching is disabled, we will also use it for
|
|
# https:// hosts that we've marked as ignoring
|
|
# TLS errors for (trusted-hosts).
|
|
insecure_adapter = InsecureHTTPAdapter(max_retries=retries)
|
|
|
|
# We want to _only_ cache responses on securely fetched origins or when
|
|
# the host is specified as trusted. We do this because
|
|
# we can't validate the response of an insecurely/untrusted fetched
|
|
# origin, and we don't want someone to be able to poison the cache and
|
|
# require manual eviction from the cache to fix it.
|
|
if cache:
|
|
secure_adapter = CacheControlAdapter(
|
|
cache=SafeFileCache(cache),
|
|
max_retries=retries,
|
|
)
|
|
self._trusted_host_adapter = InsecureCacheControlAdapter(
|
|
cache=SafeFileCache(cache),
|
|
max_retries=retries,
|
|
)
|
|
else:
|
|
secure_adapter = HTTPAdapter(max_retries=retries)
|
|
self._trusted_host_adapter = insecure_adapter
|
|
|
|
self.mount("https://", secure_adapter)
|
|
self.mount("http://", insecure_adapter)
|
|
|
|
# Enable file:// urls
|
|
self.mount("file://", LocalFSAdapter())
|
|
|
|
for host in trusted_hosts:
|
|
self.add_trusted_host(host, suppress_logging=True)
|
|
|
|
def update_index_urls(self, new_index_urls):
|
|
# type: (List[str]) -> None
|
|
"""
|
|
:param new_index_urls: New index urls to update the authentication
|
|
handler with.
|
|
"""
|
|
self.auth.index_urls = new_index_urls
|
|
|
|
def add_trusted_host(self, host, source=None, suppress_logging=False):
|
|
# type: (str, Optional[str], bool) -> None
|
|
"""
|
|
:param host: It is okay to provide a host that has previously been
|
|
added.
|
|
:param source: An optional source string, for logging where the host
|
|
string came from.
|
|
"""
|
|
if not suppress_logging:
|
|
msg = f'adding trusted host: {host!r}'
|
|
if source is not None:
|
|
msg += f' (from {source})'
|
|
logger.info(msg)
|
|
|
|
host_port = parse_netloc(host)
|
|
if host_port not in self.pip_trusted_origins:
|
|
self.pip_trusted_origins.append(host_port)
|
|
|
|
self.mount(
|
|
build_url_from_netloc(host) + '/',
|
|
self._trusted_host_adapter
|
|
)
|
|
if not host_port[1]:
|
|
# Mount wildcard ports for the same host.
|
|
self.mount(
|
|
build_url_from_netloc(host) + ':',
|
|
self._trusted_host_adapter
|
|
)
|
|
|
|
def iter_secure_origins(self):
|
|
# type: () -> Iterator[SecureOrigin]
|
|
yield from SECURE_ORIGINS
|
|
for host, port in self.pip_trusted_origins:
|
|
yield ('*', host, '*' if port is None else port)
|
|
|
|
def is_secure_origin(self, location):
|
|
# type: (Link) -> bool
|
|
# Determine if this url used a secure transport mechanism
|
|
parsed = urllib.parse.urlparse(str(location))
|
|
origin_protocol, origin_host, origin_port = (
|
|
parsed.scheme, parsed.hostname, parsed.port,
|
|
)
|
|
|
|
# The protocol to use to see if the protocol matches.
|
|
# Don't count the repository type as part of the protocol: in
|
|
# cases such as "git+ssh", only use "ssh". (I.e., Only verify against
|
|
# the last scheme.)
|
|
origin_protocol = origin_protocol.rsplit('+', 1)[-1]
|
|
|
|
# Determine if our origin is a secure origin by looking through our
|
|
# hardcoded list of secure origins, as well as any additional ones
|
|
# configured on this PackageFinder instance.
|
|
for secure_origin in self.iter_secure_origins():
|
|
secure_protocol, secure_host, secure_port = secure_origin
|
|
if origin_protocol != secure_protocol and secure_protocol != "*":
|
|
continue
|
|
|
|
try:
|
|
addr = ipaddress.ip_address(origin_host)
|
|
network = ipaddress.ip_network(secure_host)
|
|
except ValueError:
|
|
# We don't have both a valid address or a valid network, so
|
|
# we'll check this origin against hostnames.
|
|
if (
|
|
origin_host and
|
|
origin_host.lower() != secure_host.lower() and
|
|
secure_host != "*"
|
|
):
|
|
continue
|
|
else:
|
|
# We have a valid address and network, so see if the address
|
|
# is contained within the network.
|
|
if addr not in network:
|
|
continue
|
|
|
|
# Check to see if the port matches.
|
|
if (
|
|
origin_port != secure_port and
|
|
secure_port != "*" and
|
|
secure_port is not None
|
|
):
|
|
continue
|
|
|
|
# If we've gotten here, then this origin matches the current
|
|
# secure origin and we should return True
|
|
return True
|
|
|
|
# If we've gotten to this point, then the origin isn't secure and we
|
|
# will not accept it as a valid location to search. We will however
|
|
# log a warning that we are ignoring it.
|
|
logger.warning(
|
|
"The repository located at %s is not a trusted or secure host and "
|
|
"is being ignored. If this repository is available via HTTPS we "
|
|
"recommend you use HTTPS instead, otherwise you may silence "
|
|
"this warning and allow it anyway with '--trusted-host %s'.",
|
|
origin_host,
|
|
origin_host,
|
|
)
|
|
|
|
return False
|
|
|
|
def request(self, method, url, *args, **kwargs):
|
|
# type: (str, str, *Any, **Any) -> Response
|
|
# Allow setting a default timeout on a session
|
|
kwargs.setdefault("timeout", self.timeout)
|
|
|
|
# Dispatch the actual request
|
|
return super().request(method, url, *args, **kwargs)
|