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ðŸ“ http
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ðŸ“ json
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ðŸ“ multiprocessing
ðŸ“„ netrc.py(5.61 KB)
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ðŸ“„ re.py(14.62 KB)
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ðŸ“„ smtplib.py(37.13 KB)
ðŸ“„ sndhdr.py(6.07 KB)
ðŸ“„ socket.py(14.56 KB)
ðŸ“„ socketserver.py(23.63 KB)
ðŸ“ sqlite3
ðŸ“„ sre_compile.py(15.96 KB)
ðŸ“„ sre_constants.py(7.06 KB)
ðŸ“„ sre_parse.py(29.5 KB)
ðŸ“„ ssl.py(23.9 KB)
ðŸ“„ stat.py(4.2 KB)
ðŸ“„ string.py(9.19 KB)
ðŸ“„ stringprep.py(12.61 KB)
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ðŸ“„ symtable.py(7.21 KB)
ðŸ“„ sysconfig.py(24.58 KB)
ðŸ“„ tabnanny.py(11.14 KB)
ðŸ“„ tarfile.py(86.78 KB)
ðŸ“„ telnetlib.py(26.71 KB)
ðŸ“„ tempfile.py(22.47 KB)
ðŸ“ test
ðŸ“„ textwrap.py(16.1 KB)
ðŸ“„ this.py(1003 B)
ðŸ“„ threading.py(44.57 KB)
ðŸ“„ timeit.py(12.1 KB)
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ðŸ“„ trace.py(30.75 KB)
ðŸ“„ traceback.py(11.7 KB)
ðŸ“„ tty.py(879 B)
ðŸ“„ types.py(3.09 KB)
ðŸ“ unittest
ðŸ“ urllib
ðŸ“„ uu.py(6.61 KB)
ðŸ“„ uuid.py(21.83 KB)
ðŸ“ venv
ðŸ“„ warnings.py(13.5 KB)
ðŸ“„ wave.py(18.14 KB)
ðŸ“„ weakref.py(11.23 KB)
ðŸ“„ webbrowser.py(22.38 KB)
ðŸ“ wsgiref
ðŸ“„ xdrlib.py(5.25 KB)
ðŸ“ xml
ðŸ“ xmlrpc
ðŸ“„ zipfile.py(64.87 KB)

Editing: ssl.py

# Wrapper module for _ssl, providing some additional facilities
# implemented in Python.  Written by Bill Janssen.

"""This module provides some more Pythonic support for SSL.

Object types:

SSLSocket -- subtype of socket.socket which does SSL over the socket

Exceptions:

SSLError -- exception raised for I/O errors

Functions:

cert_time_to_seconds -- convert time string used for certificate
                          notBefore and notAfter functions to integer
                          seconds past the Epoch (the time values
                          returned from time.time())

fetch_server_certificate (HOST, PORT) -- fetch the certificate provided
                          by the server running on HOST at port PORT.  No
                          validation of the certificate is performed.

Integer constants:

SSL_ERROR_ZERO_RETURN
SSL_ERROR_WANT_READ
SSL_ERROR_WANT_WRITE
SSL_ERROR_WANT_X509_LOOKUP
SSL_ERROR_SYSCALL
SSL_ERROR_SSL
SSL_ERROR_WANT_CONNECT

SSL_ERROR_EOF
SSL_ERROR_INVALID_ERROR_CODE

The following group define certificate requirements that one side is
allowing/requiring from the other side:

CERT_NONE - no certificates from the other side are required (or will
            be looked at if provided)
CERT_OPTIONAL - certificates are not required, but if provided will be
                validated, and if validation fails, the connection will
                also fail
CERT_REQUIRED - certificates are required, and will be validated, and
                if validation fails, the connection will also fail

The following constants identify various SSL protocol variants:

PROTOCOL_SSLv2
PROTOCOL_SSLv3
PROTOCOL_SSLv23
PROTOCOL_TLSv1
"""

import textwrap
import re

import _ssl             # if we can't import it, let the error propagate

from _ssl import OPENSSL_VERSION_NUMBER, OPENSSL_VERSION_INFO, OPENSSL_VERSION
from _ssl import _SSLContext
from _ssl import (
    SSLError, SSLZeroReturnError, SSLWantReadError, SSLWantWriteError,
    SSLSyscallError, SSLEOFError,
    )
from _ssl import CERT_NONE, CERT_OPTIONAL, CERT_REQUIRED
from _ssl import (
    OP_ALL, OP_NO_SSLv2, OP_NO_SSLv3, OP_NO_TLSv1,
    OP_CIPHER_SERVER_PREFERENCE, OP_SINGLE_DH_USE
    )
try:
    from _ssl import OP_NO_COMPRESSION
except ImportError:
    pass
try:
    from _ssl import OP_SINGLE_ECDH_USE
except ImportError:
    pass
from _ssl import RAND_status, RAND_add, RAND_bytes, RAND_pseudo_bytes
try:
    from _ssl import RAND_egd
except ImportError:
    pass

from _ssl import (
    SSL_ERROR_ZERO_RETURN,
    SSL_ERROR_WANT_READ,
    SSL_ERROR_WANT_WRITE,
    SSL_ERROR_WANT_X509_LOOKUP,
    SSL_ERROR_SYSCALL,
    SSL_ERROR_SSL,
    SSL_ERROR_WANT_CONNECT,
    SSL_ERROR_EOF,
    SSL_ERROR_INVALID_ERROR_CODE,
    )
from _ssl import HAS_SNI, HAS_ECDH, HAS_NPN
from _ssl import (PROTOCOL_SSLv3, PROTOCOL_SSLv23,
                  PROTOCOL_TLSv1, PROTOCOL_TLS)
from _ssl import _OPENSSL_API_VERSION

globals()['PROTOCOL_SSLv23'] = getattr(_ssl, 'PROTOCOL_TLS')

_PROTOCOL_NAMES = {
    PROTOCOL_TLSv1: "TLSv1",
    PROTOCOL_SSLv23: "SSLv23",
    PROTOCOL_SSLv3: "SSLv3",
    PROTOCOL_TLS: "SSLv23"
}
try:
    from _ssl import PROTOCOL_SSLv2
    _SSLv2_IF_EXISTS = PROTOCOL_SSLv2
except ImportError:
    _SSLv2_IF_EXISTS = None
else:
    _PROTOCOL_NAMES[PROTOCOL_SSLv2] = "SSLv2"

from socket import getnameinfo as _getnameinfo
from socket import error as socket_error
from socket import socket, AF_INET, SOCK_STREAM, create_connection
from socket import SOL_SOCKET, SO_TYPE
import base64        # for DER-to-PEM translation
import traceback
import errno

if _ssl.HAS_TLS_UNIQUE:
    CHANNEL_BINDING_TYPES = ['tls-unique']
else:
    CHANNEL_BINDING_TYPES = []

# Disable weak or insecure ciphers by default
# (OpenSSL's default setting is 'DEFAULT:!aNULL:!eNULL')
_DEFAULT_CIPHERS = 'DEFAULT:!aNULL:!eNULL:!LOW:!EXPORT:!SSLv2'

class CertificateError(ValueError):
    pass

def _dnsname_match(dn, hostname, max_wildcards=1):
    """Matching according to RFC 6125, section 6.4.3

http://tools.ietf.org/html/rfc6125#section-6.4.3
    """
    pats = []
    if not dn:
        return False

leftmost, *remainder = dn.split(r'.')

wildcards = leftmost.count('*')
    if wildcards > max_wildcards:
        # Issue #17980: avoid denials of service by refusing more
        # than one wildcard per fragment.  A survery of established
        # policy among SSL implementations showed it to be a
        # reasonable choice.
        raise CertificateError(
            "too many wildcards in certificate DNS name: " + repr(dn))

# speed up common case w/o wildcards
    if not wildcards:
        return dn.lower() == hostname.lower()

# RFC 6125, section 6.4.3, subitem 1.
    # The client SHOULD NOT attempt to match a presented identifier in which
    # the wildcard character comprises a label other than the left-most label.
    if leftmost == '*':
        # When '*' is a fragment by itself, it matches a non-empty dotless
        # fragment.
        pats.append('[^.]+')
    elif leftmost.startswith('xn--') or hostname.startswith('xn--'):
        # RFC 6125, section 6.4.3, subitem 3.
        # The client SHOULD NOT attempt to match a presented identifier
        # where the wildcard character is embedded within an A-label or
        # U-label of an internationalized domain name.
        pats.append(re.escape(leftmost))
    else:
        # Otherwise, '*' matches any dotless string, e.g. www*
        pats.append(re.escape(leftmost).replace(r'\*', '[^.]*'))

# add the remaining fragments, ignore any wildcards
    for frag in remainder:
        pats.append(re.escape(frag))

pat = re.compile(r'\A' + r'\.'.join(pats) + r'\Z', re.IGNORECASE)
    return pat.match(hostname)

def match_hostname(cert, hostname):
    """Verify that *cert* (in decoded format as returned by
    SSLSocket.getpeercert()) matches the *hostname*.  RFC 2818 and RFC 6125
    rules are followed, but IP addresses are not accepted for *hostname*.

CertificateError is raised on failure. On success, the function
    returns nothing.
    """
    if not cert:
        raise ValueError("empty or no certificate")
    dnsnames = []
    san = cert.get('subjectAltName', ())
    for key, value in san:
        if key == 'DNS':
            if _dnsname_match(value, hostname):
                return
            dnsnames.append(value)
    if not dnsnames:
        # The subject is only checked when there is no dNSName entry
        # in subjectAltName
        for sub in cert.get('subject', ()):
            for key, value in sub:
                # XXX according to RFC 2818, the most specific Common Name
                # must be used.
                if key == 'commonName':
                    if _dnsname_match(value, hostname):
                        return
                    dnsnames.append(value)
    if len(dnsnames) > 1:
        raise CertificateError("hostname %r "
            "doesn't match either of %s"
            % (hostname, ', '.join(map(repr, dnsnames))))
    elif len(dnsnames) == 1:
        raise CertificateError("hostname %r "
            "doesn't match %r"
            % (hostname, dnsnames[0]))
    else:
        raise CertificateError("no appropriate commonName or "
            "subjectAltName fields were found")

class SSLContext(_SSLContext):
    """An SSLContext holds various SSL-related configuration options and
    data, such as certificates and possibly a private key."""

__slots__ = ('protocol',)

def __new__(cls, protocol, *args, **kwargs):
        self = _SSLContext.__new__(cls, protocol)
        if protocol != _SSLv2_IF_EXISTS:
            self.set_ciphers(_DEFAULT_CIPHERS)
        return self

def __init__(self, protocol):
        self.protocol = protocol

def wrap_socket(self, sock, server_side=False,
                    do_handshake_on_connect=True,
                    suppress_ragged_eofs=True,
                    server_hostname=None):
        return SSLSocket(sock=sock, server_side=server_side,
                         do_handshake_on_connect=do_handshake_on_connect,
                         suppress_ragged_eofs=suppress_ragged_eofs,
                         server_hostname=server_hostname,
                         _context=self)

def set_npn_protocols(self, npn_protocols):
        protos = bytearray()
        for protocol in npn_protocols:
            b = bytes(protocol, 'ascii')
            if len(b) == 0 or len(b) > 255:
                raise SSLError('NPN protocols must be 1 to 255 in length')
            protos.append(len(b))
            protos.extend(b)

self._set_npn_protocols(protos)

class SSLSocket(socket):
    """This class implements a subtype of socket.socket that wraps
    the underlying OS socket in an SSL context when necessary, and
    provides read and write methods over that channel."""

def __init__(self, sock=None, keyfile=None, certfile=None,
                 server_side=False, cert_reqs=CERT_NONE,
                 ssl_version=PROTOCOL_TLS, ca_certs=None,
                 do_handshake_on_connect=True,
                 family=AF_INET, type=SOCK_STREAM, proto=0, fileno=None,
                 suppress_ragged_eofs=True, npn_protocols=None, ciphers=None,
                 server_hostname=None,
                 _context=None):

if _context:
            self.context = _context
        else:
            if server_side and not certfile:
                raise ValueError("certfile must be specified for server-side "
                                 "operations")
            if keyfile and not certfile:
                raise ValueError("certfile must be specified")
            if certfile and not keyfile:
                keyfile = certfile
            self.context = SSLContext(ssl_version)
            self.context.verify_mode = cert_reqs
            if ca_certs:
                self.context.load_verify_locations(ca_certs)
            if certfile:
                self.context.load_cert_chain(certfile, keyfile)
            if npn_protocols:
                self.context.set_npn_protocols(npn_protocols)
            if ciphers:
                self.context.set_ciphers(ciphers)
            self.keyfile = keyfile
            self.certfile = certfile
            self.cert_reqs = cert_reqs
            self.ssl_version = ssl_version
            self.ca_certs = ca_certs
            self.ciphers = ciphers
        # Can't use sock.type as other flags (such as SOCK_NONBLOCK) get
        # mixed in.
        if sock.getsockopt(SOL_SOCKET, SO_TYPE) != SOCK_STREAM:
            raise NotImplementedError("only stream sockets are supported")
        if server_side and server_hostname:
            raise ValueError("server_hostname can only be specified "
                             "in client mode")
        self.server_side = server_side
        self.server_hostname = server_hostname
        self.do_handshake_on_connect = do_handshake_on_connect
        self.suppress_ragged_eofs = suppress_ragged_eofs
        connected = False
        if sock is not None:
            socket.__init__(self,
                            family=sock.family,
                            type=sock.type,
                            proto=sock.proto,
                            fileno=sock.fileno())
            self.settimeout(sock.gettimeout())
            # see if it's connected
            try:
                sock.getpeername()
            except socket_error as e:
                if e.errno != errno.ENOTCONN:
                    raise
            else:
                connected = True
            sock.detach()
        elif fileno is not None:
            socket.__init__(self, fileno=fileno)
        else:
            socket.__init__(self, family=family, type=type, proto=proto)

self._closed = False
        self._sslobj = None
        self._connected = connected
        if connected:
            # create the SSL object
            try:
                self._sslobj = self.context._wrap_socket(self, server_side,
                                                         server_hostname)
                if do_handshake_on_connect:
                    timeout = self.gettimeout()
                    if timeout == 0.0:
                        # non-blocking
                        raise ValueError("do_handshake_on_connect should not be specified for non-blocking sockets")
                    self.do_handshake()

except socket_error as x:
                self.close()
                raise x

def dup(self):
        raise NotImplemented("Can't dup() %s instances" %
                             self.__class__.__name__)

def _checkClosed(self, msg=None):
        # raise an exception here if you wish to check for spurious closes
        pass

def read(self, len=0, buffer=None):
        """Read up to LEN bytes and return them.
        Return zero-length string on EOF."""

self._checkClosed()
        try:
            if buffer is not None:
                v = self._sslobj.read(len, buffer)
            else:
                v = self._sslobj.read(len or 1024)
            return v
        except SSLError as x:
            if x.args[0] == SSL_ERROR_EOF and self.suppress_ragged_eofs:
                if buffer is not None:
                    return 0
                else:
                    return b''
            else:
                raise

def write(self, data):
        """Write DATA to the underlying SSL channel.  Returns
        number of bytes of DATA actually transmitted."""

self._checkClosed()
        return self._sslobj.write(data)

def getpeercert(self, binary_form=False):
        """Returns a formatted version of the data in the
        certificate provided by the other end of the SSL channel.
        Return None if no certificate was provided, {} if a
        certificate was provided, but not validated."""

self._checkClosed()
        return self._sslobj.peer_certificate(binary_form)

def selected_npn_protocol(self):
        self._checkClosed()
        if not self._sslobj or not _ssl.HAS_NPN:
            return None
        else:
            return self._sslobj.selected_npn_protocol()

def cipher(self):
        self._checkClosed()
        if not self._sslobj:
            return None
        else:
            return self._sslobj.cipher()

def compression(self):
        self._checkClosed()
        if not self._sslobj:
            return None
        else:
            return self._sslobj.compression()

def send(self, data, flags=0):
        self._checkClosed()
        if self._sslobj:
            if flags != 0:
                raise ValueError(
                    "non-zero flags not allowed in calls to send() on %s" %
                    self.__class__)
            while True:
                try:
                    v = self._sslobj.write(data)
                except SSLError as x:
                    if x.args[0] == SSL_ERROR_WANT_READ:
                        return 0
                    elif x.args[0] == SSL_ERROR_WANT_WRITE:
                        return 0
                    else:
                        raise
                else:
                    return v
        else:
            return socket.send(self, data, flags)

def sendto(self, data, flags_or_addr, addr=None):
        self._checkClosed()
        if self._sslobj:
            raise ValueError("sendto not allowed on instances of %s" %
                             self.__class__)
        elif addr is None:
            return socket.sendto(self, data, flags_or_addr)
        else:
            return socket.sendto(self, data, flags_or_addr, addr)

def sendmsg(self, *args, **kwargs):
        # Ensure programs don't send data unencrypted if they try to
        # use this method.
        raise NotImplementedError("sendmsg not allowed on instances of %s" %
                                  self.__class__)

def sendall(self, data, flags=0):
        self._checkClosed()
        if self._sslobj:
            if flags != 0:
                raise ValueError(
                    "non-zero flags not allowed in calls to sendall() on %s" %
                    self.__class__)
            amount = len(data)
            count = 0
            while (count < amount):
                v = self.send(data[count:])
                count += v
            return amount
        else:
            return socket.sendall(self, data, flags)

def recv(self, buflen=1024, flags=0):
        self._checkClosed()
        if self._sslobj:
            if flags != 0:
                raise ValueError(
                    "non-zero flags not allowed in calls to recv() on %s" %
                    self.__class__)
            return self.read(buflen)
        else:
            return socket.recv(self, buflen, flags)

def recv_into(self, buffer, nbytes=None, flags=0):
        self._checkClosed()
        if buffer and (nbytes is None):
            nbytes = len(buffer)
        elif nbytes is None:
            nbytes = 1024
        if self._sslobj:
            if flags != 0:
                raise ValueError(
                  "non-zero flags not allowed in calls to recv_into() on %s" %
                  self.__class__)
            return self.read(nbytes, buffer)
        else:
            return socket.recv_into(self, buffer, nbytes, flags)

def recvfrom(self, buflen=1024, flags=0):
        self._checkClosed()
        if self._sslobj:
            raise ValueError("recvfrom not allowed on instances of %s" %
                             self.__class__)
        else:
            return socket.recvfrom(self, buflen, flags)

def recvfrom_into(self, buffer, nbytes=None, flags=0):
        self._checkClosed()
        if self._sslobj:
            raise ValueError("recvfrom_into not allowed on instances of %s" %
                             self.__class__)
        else:
            return socket.recvfrom_into(self, buffer, nbytes, flags)

def recvmsg(self, *args, **kwargs):
        raise NotImplementedError("recvmsg not allowed on instances of %s" %
                                  self.__class__)

def recvmsg_into(self, *args, **kwargs):
        raise NotImplementedError("recvmsg_into not allowed on instances of "
                                  "%s" % self.__class__)

def pending(self):
        self._checkClosed()
        if self._sslobj:
            return self._sslobj.pending()
        else:
            return 0

def shutdown(self, how):
        self._checkClosed()
        self._sslobj = None
        socket.shutdown(self, how)

def unwrap(self):
        if self._sslobj:
            s = self._sslobj.shutdown()
            self._sslobj = None
            return s
        else:
            raise ValueError("No SSL wrapper around " + str(self))

def _real_close(self):
        self._sslobj = None
        # self._closed = True
        socket._real_close(self)

def do_handshake(self, block=False):
        """Perform a TLS/SSL handshake."""

timeout = self.gettimeout()
        try:
            if timeout == 0.0 and block:
                self.settimeout(None)
            self._sslobj.do_handshake()
        finally:
            self.settimeout(timeout)

def _real_connect(self, addr, connect_ex):
        if self.server_side:
            raise ValueError("can't connect in server-side mode")
        # Here we assume that the socket is client-side, and not
        # connected at the time of the call.  We connect it, then wrap it.
        if self._connected:
            raise ValueError("attempt to connect already-connected SSLSocket!")
        self._sslobj = self.context._wrap_socket(self, False, self.server_hostname)
        try:
            if connect_ex:
                rc = socket.connect_ex(self, addr)
            else:
                rc = None
                socket.connect(self, addr)
            if not rc:
                if self.do_handshake_on_connect:
                    self.do_handshake()
                self._connected = True
            return rc
        except socket_error:
            self._sslobj = None
            raise

def connect(self, addr):
        """Connects to remote ADDR, and then wraps the connection in
        an SSL channel."""
        self._real_connect(addr, False)

def connect_ex(self, addr):
        """Connects to remote ADDR, and then wraps the connection in
        an SSL channel."""
        return self._real_connect(addr, True)

def accept(self):
        """Accepts a new connection from a remote client, and returns
        a tuple containing that new connection wrapped with a server-side
        SSL channel, and the address of the remote client."""

newsock, addr = socket.accept(self)
        newsock = self.context.wrap_socket(newsock,
                    do_handshake_on_connect=self.do_handshake_on_connect,
                    suppress_ragged_eofs=self.suppress_ragged_eofs,
                    server_side=True)
        return newsock, addr

def get_channel_binding(self, cb_type="tls-unique"):
        """Get channel binding data for current connection.  Raise ValueError
        if the requested `cb_type` is not supported.  Return bytes of the data
        or None if the data is not available (e.g. before the handshake).
        """
        if cb_type not in CHANNEL_BINDING_TYPES:
            raise ValueError("Unsupported channel binding type")
        if cb_type != "tls-unique":
            raise NotImplementedError(
                            "{0} channel binding type not implemented"
                            .format(cb_type))
        if self._sslobj is None:
            return None
        return self._sslobj.tls_unique_cb()

def wrap_socket(sock, keyfile=None, certfile=None,
                server_side=False, cert_reqs=CERT_NONE,
                ssl_version=PROTOCOL_TLS, ca_certs=None,
                do_handshake_on_connect=True,
                suppress_ragged_eofs=True,
                ciphers=None):

return SSLSocket(sock=sock, keyfile=keyfile, certfile=certfile,
                     server_side=server_side, cert_reqs=cert_reqs,
                     ssl_version=ssl_version, ca_certs=ca_certs,
                     do_handshake_on_connect=do_handshake_on_connect,
                     suppress_ragged_eofs=suppress_ragged_eofs,
                     ciphers=ciphers)

# some utility functions

def cert_time_to_seconds(cert_time):
    """Takes a date-time string in standard ASN1_print form
    ("MON DAY 24HOUR:MINUTE:SEC YEAR TIMEZONE") and return
    a Python time value in seconds past the epoch."""

import time
    return time.mktime(time.strptime(cert_time, "%b %d %H:%M:%S %Y GMT"))

PEM_HEADER = "-----BEGIN CERTIFICATE-----"
PEM_FOOTER = "-----END CERTIFICATE-----"

def DER_cert_to_PEM_cert(der_cert_bytes):
    """Takes a certificate in binary DER format and returns the
    PEM version of it as a string."""

f = str(base64.standard_b64encode(der_cert_bytes), 'ASCII', 'strict')
    return (PEM_HEADER + '\n' +
            textwrap.fill(f, 64) + '\n' +
            PEM_FOOTER + '\n')

def PEM_cert_to_DER_cert(pem_cert_string):
    """Takes a certificate in ASCII PEM format and returns the
    DER-encoded version of it as a byte sequence"""

if not pem_cert_string.startswith(PEM_HEADER):
        raise ValueError("Invalid PEM encoding; must start with %s"
                         % PEM_HEADER)
    if not pem_cert_string.strip().endswith(PEM_FOOTER):
        raise ValueError("Invalid PEM encoding; must end with %s"
                         % PEM_FOOTER)
    d = pem_cert_string.strip()[len(PEM_HEADER):-len(PEM_FOOTER)]
    return base64.decodebytes(d.encode('ASCII', 'strict'))

def get_server_certificate(addr, ssl_version=PROTOCOL_SSLv3, ca_certs=None):
    """Retrieve the certificate from the server at the specified address,
    and return it as a PEM-encoded string.
    If 'ca_certs' is specified, validate the server cert against it.
    If 'ssl_version' is specified, use it in the connection attempt."""

host, port = addr
    if (ca_certs is not None):
        cert_reqs = CERT_REQUIRED
    else:
        cert_reqs = CERT_NONE
    s = create_connection(addr)
    s = wrap_socket(s, ssl_version=ssl_version,
                    cert_reqs=cert_reqs, ca_certs=ca_certs)
    dercert = s.getpeercert(True)
    s.close()
    return DER_cert_to_PEM_cert(dercert)

def get_protocol_name(protocol_code):
    return _PROTOCOL_NAMES.get(protocol_code, '<unknown>')

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