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#!/usr/bin/env python # # Hi There! # You may be wondering what this giant blob of binary data here is, you might # even be worried that we're up to something nefarious (good for you for being # paranoid!). This is a base85 encoding of a zip file, this zip file contains # an entire copy of pip. # # Pip is a thing that installs packages, pip itself is a package that someone # might want to install, especially if they're looking to run this get-pip.py # script. Pip has a lot of code to deal with the security of installing # packages, various edge cases on various platforms, and other such sort of # "tribal knowledge" that has been encoded in its code base. Because of this # we basically include an entire copy of pip inside this blob. We do this # because the alternatives are attempt to implement a "minipip" that probably # doesn't do things correctly and has weird edge cases, or compress pip itself # down into a single file. # # If you're wondering how this is created, it is using an invoke task located # in tasks/generate.py called "installer". It can be invoked by using # ``invoke generate.installer``. import os.path import pkgutil import shutil import sys import struct import tempfile # Useful for very coarse version differentiation. PY2 = sys.version_info[0] == 2 PY3 = sys.version_info[0] == 3 if PY3: iterbytes = iter else: def iterbytes(buf): return (ord(byte) for byte in buf) try: from base64 import b85decode except ImportError: _b85alphabet = (b"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ" b"abcdefghijklmnopqrstuvwxyz!#$%&()*+-;<=>?@^_`{|}~") def b85decode(b): _b85dec = [None] * 256 for i, c in enumerate(iterbytes(_b85alphabet)): _b85dec[c] = i padding = (-len(b)) % 5 b = b + b'~' * padding out = [] packI = struct.Struct('!I').pack for i in range(0, len(b), 5): chunk = b[i:i + 5] acc = 0 try: for c in iterbytes(chunk): acc = acc * 85 + _b85dec[c] except TypeError: for j, c in enumerate(iterbytes(chunk)): if _b85dec[c] is None: raise ValueError( 'bad base85 character at position %d' % (i + j) ) raise try: out.append(packI(acc)) except struct.error: raise ValueError('base85 overflow in hunk starting at byte %d' % i) result = b''.join(out) if padding: result = result[:-padding] return result def bootstrap(tmpdir=None): # Import pip so we can use it to install pip and maybe setuptools too import pip from pip.commands.install import InstallCommand from pip.req import InstallRequirement # Wrapper to provide default certificate with the lowest priority class CertInstallCommand(InstallCommand): def parse_args(self, args): # If cert isn't specified in config or environment, we provide our # own certificate through defaults. # This allows user to specify custom cert anywhere one likes: # config, environment variable or argv. if not self.parser.get_default_values().cert: self.parser.defaults["cert"] = cert_path # calculated below return super(CertInstallCommand, self).parse_args(args) pip.commands_dict["install"] = CertInstallCommand implicit_pip = True implicit_setuptools = True implicit_wheel = True # Check if the user has requested us not to install setuptools if "--no-setuptools" in sys.argv or os.environ.get("PIP_NO_SETUPTOOLS"): args = [x for x in sys.argv[1:] if x != "--no-setuptools"] implicit_setuptools = False else: args = sys.argv[1:] # Check if the user has requested us not to install wheel if "--no-wheel" in args or os.environ.get("PIP_NO_WHEEL"): args = [x for x in args if x != "--no-wheel"] implicit_wheel = False # We only want to implicitly install setuptools and wheel if they don't # already exist on the target platform. if implicit_setuptools: try: import setuptools # noqa implicit_setuptools = False except ImportError: pass if implicit_wheel: try: import wheel # noqa implicit_wheel = False except ImportError: pass # We want to support people passing things like 'pip<8' to get-pip.py which # will let them install a specific version. However because of the dreaded # DoubleRequirement error if any of the args look like they might be a # specific for one of our packages, then we'll turn off the implicit # install of them. for arg in args: try: req = InstallRequirement.from_line(arg) except: continue if implicit_pip and req.name == "pip": implicit_pip = False elif implicit_setuptools and req.name == "setuptools": implicit_setuptools = False elif implicit_wheel and req.name == "wheel": implicit_wheel = False # Add any implicit installations to the end of our args if implicit_pip: args += ["pip"] if implicit_setuptools: args += ["setuptools"] if implicit_wheel: args += ["wheel"] delete_tmpdir = False try: # Create a temporary directory to act as a working directory if we were # not given one. if tmpdir is None: tmpdir = tempfile.mkdtemp() delete_tmpdir = True # We need to extract the SSL certificates from requests so that they # can be passed to --cert cert_path = os.path.join(tmpdir, "cacert.pem") with open(cert_path, "wb") as cert: cert.write(pkgutil.get_data("pip._vendor.requests", "cacert.pem")) # Execute the included pip and use it to install the latest pip and # setuptools from PyPI sys.exit(pip.main(["install", "--upgrade"] + args)) finally: # Remove our temporary directory if delete_tmpdir and tmpdir: shutil.rmtree(tmpdir, ignore_errors=True) def main(): tmpdir = None try: # Create a temporary working directory tmpdir = tempfile.mkdtemp() # Unpack the zipfile into the temporary directory pip_zip = os.path.join(tmpdir, "pip.zip") with open(pip_zip, "wb") as fp: fp.write(b85decode(DATA.replace(b"\n", b""))) # Add the zipfile to sys.path so that we can import it sys.path.insert(0, pip_zip) # Run the bootstrap bootstrap(tmpdir=tmpdir) finally: # Clean up our temporary working directory if tmpdir: shutil.rmtree(tmpdir, ignore_errors=True) DATA = b""" P)h>@6aWAK2mm&gW=RK-r8gW8002}h000jF003}la4%n9X>MtBUtcb8d8JxybK5o&{;pqv$n}tHC^l~ I+Mavrq?0()%%qLSNv=2JXgHJzNr)+u1xVRS+y8#M3xEJc+D&`xG$ILLcd^)g_Juxq^hK-W7fVro!OK 0X56!kJCu>>lSemZerj<NRnb_5pY*@BbRnay))z6cOd0$kktl;ixvk~RSK31x`tD8ELs+)M5$r2{2j* dEXb0wclPS}@E&c2>K`FeKt4O?bX9-iiWDY7!D<mQ~UvM9vzD|VKg{exwB&U54-sxm8>YHK31t|U{{> PE#tZP_+VteGhH)eTGzMZy!aHJ(Q?6Cjc(3MQ0lIm@hktf`o4axNvVCTc)Ts4@VJ>@!hh%K`|2$iKE+ HHx+6sw#7#MJW!3g|Y$%N)ur)tC3;}#CBEQ7CdI~xY=+?Ot(T=34r+9E$`%6N}j>;=NFf=Z&^bu!zEv 3t>Ua&1Gxq!8;Ps7soN%ES($^#>_e*>Ru`El;Z0c`kR05XmE3{WT9s{ZCofrE;qGp;vO#hcs@DjeDR$ tn@v;IglI6VSWzNghfplGqI!0<h0I1-4T3r;??TjQs&6OmeCw>gHwP<*5k}E|s-0tgq2{VgAu^rc%*@ 7HRg@?*fSPs9ypVK;PZfg`L*{@Wh4H}=)J&0S$#2!{sXR907wMxwCB>Zm0$&8dG^t{{SFIu9BwcKPai iS)37*53oHqWOqTV)O3RPrz%ERGmE0Tun4O(ssPA=8(oYCvxpzPymKk}-Q$?RIdE=IK(@bmxe)jVQYH 8{VWs)8KiU3x%fE5{sAyYgujXSqq0M!Jcq(%y4NcRLa4k(bC--&}_#|G%=iwT(weU1)OKQ+;gdjz%u) oWwP6Kw|to?PIw?Km1kAC7Ms_kh)WuY*}FOiLCVc@zRudBQ9tsceu3uNfZ`pomDWvf`>KU^QgE|jC3f JeGPP6hUu>U2ZL8-0vz>6l;DW>Cpc;OqR~k!