first commit

backend/venv/lib/python3.9/site-packages/docker/utils/__init__.py

@@ -0,0 +1,28 @@
+
+from .build import create_archive, exclude_paths, match_tag, mkbuildcontext, tar
+from .decorators import check_resource, minimum_version, update_headers
+from .utils import (
+    compare_version,
+    convert_filters,
+    convert_port_bindings,
+    convert_service_networks,
+    convert_volume_binds,
+    create_host_config,
+    create_ipam_config,
+    create_ipam_pool,
+    datetime_to_timestamp,
+    decode_json_header,
+    format_environment,
+    format_extra_hosts,
+    kwargs_from_env,
+    normalize_links,
+    parse_bytes,
+    parse_devices,
+    parse_env_file,
+    parse_host,
+    parse_repository_tag,
+    split_command,
+    version_gte,
+    version_lt,
+)
+

backend/venv/lib/python3.9/site-packages/docker/utils/build.py

@@ -0,0 +1,260 @@
+import io
+import os
+import re
+import tarfile
+import tempfile
+
+from ..constants import IS_WINDOWS_PLATFORM
+from .fnmatch import fnmatch
+
+_SEP = re.compile('/|\\\\') if IS_WINDOWS_PLATFORM else re.compile('/')
+_TAG = re.compile(
+    r"^[a-z0-9]+((\.|_|__|-+)[a-z0-9]+)*"
+    r"(?::[0-9]+)?(/[a-z0-9]+((\.|_|__|-+)[a-z0-9]+)*)*"
+    r"(:[a-zA-Z0-9_][a-zA-Z0-9._-]{0,127})?$"
+)
+
+
+def match_tag(tag: str) -> bool:
+    return bool(_TAG.match(tag))
+
+
+def tar(path, exclude=None, dockerfile=None, fileobj=None, gzip=False):
+    root = os.path.abspath(path)
+    exclude = exclude or []
+    dockerfile = dockerfile or (None, None)
+    extra_files = []
+    if dockerfile[1] is not None:
+        dockerignore_contents = '\n'.join(
+            (exclude or ['.dockerignore']) + [dockerfile[0]]
+        )
+        extra_files = [
+            ('.dockerignore', dockerignore_contents),
+            dockerfile,
+        ]
+    return create_archive(
+        files=sorted(exclude_paths(root, exclude, dockerfile=dockerfile[0])),
+        root=root, fileobj=fileobj, gzip=gzip, extra_files=extra_files
+    )
+
+
+def exclude_paths(root, patterns, dockerfile=None):
+    """
+    Given a root directory path and a list of .dockerignore patterns, return
+    an iterator of all paths (both regular files and directories) in the root
+    directory that do *not* match any of the patterns.
+
+    All paths returned are relative to the root.
+    """
+
+    if dockerfile is None:
+        dockerfile = 'Dockerfile'
+
+    patterns.append(f"!{dockerfile}")
+    pm = PatternMatcher(patterns)
+    return set(pm.walk(root))
+
+
+def build_file_list(root):
+    files = []
+    for dirname, dirnames, fnames in os.walk(root):
+        for filename in fnames + dirnames:
+            longpath = os.path.join(dirname, filename)
+            files.append(
+                longpath.replace(root, '', 1).lstrip('/')
+            )
+
+    return files
+
+
+def create_archive(root, files=None, fileobj=None, gzip=False,
+                   extra_files=None):
+    extra_files = extra_files or []
+    if not fileobj:
+        fileobj = tempfile.NamedTemporaryFile()
+    t = tarfile.open(mode='w:gz' if gzip else 'w', fileobj=fileobj)
+    if files is None:
+        files = build_file_list(root)
+    extra_names = {e[0] for e in extra_files}
+    for path in files:
+        if path in extra_names:
+            # Extra files override context files with the same name
+            continue
+        full_path = os.path.join(root, path)
+
+        i = t.gettarinfo(full_path, arcname=path)
+        if i is None:
+            # This happens when we encounter a socket file. We can safely
+            # ignore it and proceed.
+            continue
+
+        # Workaround https://bugs.python.org/issue32713
+        if i.mtime < 0 or i.mtime > 8**11 - 1:
+            i.mtime = int(i.mtime)
+
+        if IS_WINDOWS_PLATFORM:
+            # Windows doesn't keep track of the execute bit, so we make files
+            # and directories executable by default.
+            i.mode = i.mode & 0o755 | 0o111
+
+        if i.isfile():
+            try:
+                with open(full_path, 'rb') as f:
+                    t.addfile(i, f)
+            except OSError as oe:
+                raise OSError(
+                    f'Can not read file in context: {full_path}'
+                ) from oe
+        else:
+            # Directories, FIFOs, symlinks... don't need to be read.
+            t.addfile(i, None)
+
+    for name, contents in extra_files:
+        info = tarfile.TarInfo(name)
+        contents_encoded = contents.encode('utf-8')
+        info.size = len(contents_encoded)
+        t.addfile(info, io.BytesIO(contents_encoded))
+
+    t.close()
+    fileobj.seek(0)
+    return fileobj
+
+
+def mkbuildcontext(dockerfile):
+    f = tempfile.NamedTemporaryFile()
+    t = tarfile.open(mode='w', fileobj=f)
+    if isinstance(dockerfile, io.StringIO):
+        dfinfo = tarfile.TarInfo('Dockerfile')
+        raise TypeError('Please use io.BytesIO to create in-memory '
+                        'Dockerfiles with Python 3')
+    elif isinstance(dockerfile, io.BytesIO):
+        dfinfo = tarfile.TarInfo('Dockerfile')
+        dfinfo.size = len(dockerfile.getvalue())
+        dockerfile.seek(0)
+    else:
+        dfinfo = t.gettarinfo(fileobj=dockerfile, arcname='Dockerfile')
+    t.addfile(dfinfo, dockerfile)
+    t.close()
+    f.seek(0)
+    return f
+
+
+def split_path(p):
+    return [pt for pt in re.split(_SEP, p) if pt and pt != '.']
+
+
+def normalize_slashes(p):
+    if IS_WINDOWS_PLATFORM:
+        return '/'.join(split_path(p))
+    return p
+
+
+def walk(root, patterns, default=True):
+    pm = PatternMatcher(patterns)
+    return pm.walk(root)
+
+
+# Heavily based on
+# https://github.com/moby/moby/blob/master/pkg/fileutils/fileutils.go
+class PatternMatcher:
+    def __init__(self, patterns):
+        self.patterns = list(filter(
+            lambda p: p.dirs, [Pattern(p) for p in patterns]
+        ))
+        self.patterns.append(Pattern('!.dockerignore'))
+
+    def matches(self, filepath):
+        matched = False
+        parent_path = os.path.dirname(filepath)
+        parent_path_dirs = split_path(parent_path)
+
+        for pattern in self.patterns:
+            negative = pattern.exclusion
+            match = pattern.match(filepath)
+            if not match and parent_path != '':
+                if len(pattern.dirs) <= len(parent_path_dirs):
+                    match = pattern.match(
+                        os.path.sep.join(parent_path_dirs[:len(pattern.dirs)])
+                    )
+
+            if match:
+                matched = not negative
+
+        return matched
+
+    def walk(self, root):
+        def rec_walk(current_dir):
+            for f in os.listdir(current_dir):
+                fpath = os.path.join(
+                    os.path.relpath(current_dir, root), f
+                )
+                if fpath.startswith(f".{os.path.sep}"):
+                    fpath = fpath[2:]
+                match = self.matches(fpath)
+                if not match:
+                    yield fpath
+
+                cur = os.path.join(root, fpath)
+                if not os.path.isdir(cur) or os.path.islink(cur):
+                    continue
+
+                if match:
+                    # If we want to skip this file and it's a directory
+                    # then we should first check to see if there's an
+                    # excludes pattern (e.g. !dir/file) that starts with this
+                    # dir. If so then we can't skip this dir.
+                    skip = True
+
+                    for pat in self.patterns:
+                        if not pat.exclusion:
+                            continue
+                        if pat.cleaned_pattern.startswith(
+                                normalize_slashes(fpath)):
+                            skip = False
+                            break
+                    if skip:
+                        continue
+                yield from rec_walk(cur)
+
+        return rec_walk(root)
+
+
+class Pattern:
+    def __init__(self, pattern_str):
+        self.exclusion = False
+        if pattern_str.startswith('!'):
+            self.exclusion = True
+            pattern_str = pattern_str[1:]
+
+        self.dirs = self.normalize(pattern_str)
+        self.cleaned_pattern = '/'.join(self.dirs)
+
+    @classmethod
+    def normalize(cls, p):
+
+        # Remove trailing spaces
+        p = p.strip()
+
+        # Leading and trailing slashes are not relevant. Yes,
+        # "foo.py/" must exclude the "foo.py" regular file. "."
+        # components are not relevant either, even if the whole
+        # pattern is only ".", as the Docker reference states: "For
+        # historical reasons, the pattern . is ignored."
+        # ".." component must be cleared with the potential previous
+        # component, regardless of whether it exists: "A preprocessing
+        # step [...]  eliminates . and .. elements using Go's
+        # filepath.".
+        i = 0
+        split = split_path(p)
+        while i < len(split):
+            if split[i] == '..':
+                del split[i]
+                if i > 0:
+                    del split[i - 1]
+                    i -= 1
+            else:
+                i += 1
+        return split
+
+    def match(self, filepath):
+        return fnmatch(normalize_slashes(filepath), self.cleaned_pattern)

backend/venv/lib/python3.9/site-packages/docker/utils/config.py

@@ -0,0 +1,66 @@
+import json
+import logging
+import os
+
+from ..constants import IS_WINDOWS_PLATFORM
+
+DOCKER_CONFIG_FILENAME = os.path.join('.docker', 'config.json')
+LEGACY_DOCKER_CONFIG_FILENAME = '.dockercfg'
+
+log = logging.getLogger(__name__)
+
+
+def find_config_file(config_path=None):
+    paths = list(filter(None, [
+        config_path,  # 1
+        config_path_from_environment(),  # 2
+        os.path.join(home_dir(), DOCKER_CONFIG_FILENAME),  # 3
+        os.path.join(home_dir(), LEGACY_DOCKER_CONFIG_FILENAME),  # 4
+    ]))
+
+    log.debug(f"Trying paths: {repr(paths)}")
+
+    for path in paths:
+        if os.path.exists(path):
+            log.debug(f"Found file at path: {path}")
+            return path
+
+    log.debug("No config file found")
+
+    return None
+
+
+def config_path_from_environment():
+    config_dir = os.environ.get('DOCKER_CONFIG')
+    if not config_dir:
+        return None
+    return os.path.join(config_dir, os.path.basename(DOCKER_CONFIG_FILENAME))
+
+
+def home_dir():
+    """
+    Get the user's home directory, using the same logic as the Docker Engine
+    client - use %USERPROFILE% on Windows, $HOME/getuid on POSIX.
+    """
+    if IS_WINDOWS_PLATFORM:
+        return os.environ.get('USERPROFILE', '')
+    else:
+        return os.path.expanduser('~')
+
+
+def load_general_config(config_path=None):
+    config_file = find_config_file(config_path)
+
+    if not config_file:
+        return {}
+
+    try:
+        with open(config_file) as f:
+            return json.load(f)
+    except (OSError, ValueError) as e:
+        # In the case of a legacy `.dockercfg` file, we won't
+        # be able to load any JSON data.
+        log.debug(e)
+
+    log.debug("All parsing attempts failed - returning empty config")
+    return {}

backend/venv/lib/python3.9/site-packages/docker/utils/decorators.py

@@ -0,0 +1,45 @@
+import functools
+
+from .. import errors
+from . import utils
+
+
+def check_resource(resource_name):
+    def decorator(f):
+        @functools.wraps(f)
+        def wrapped(self, resource_id=None, *args, **kwargs):
+            if resource_id is None and kwargs.get(resource_name):
+                resource_id = kwargs.pop(resource_name)
+            if isinstance(resource_id, dict):
+                resource_id = resource_id.get('Id', resource_id.get('ID'))
+            if not resource_id:
+                raise errors.NullResource(
+                    'Resource ID was not provided'
+                )
+            return f(self, resource_id, *args, **kwargs)
+        return wrapped
+    return decorator
+
+
+def minimum_version(version):
+    def decorator(f):
+        @functools.wraps(f)
+        def wrapper(self, *args, **kwargs):
+            if utils.version_lt(self._version, version):
+                raise errors.InvalidVersion(
+                    f'{f.__name__} is not available for version < {version}',
+                )
+            return f(self, *args, **kwargs)
+        return wrapper
+    return decorator
+
+
+def update_headers(f):
+    def inner(self, *args, **kwargs):
+        if 'HttpHeaders' in self._general_configs:
+            if not kwargs.get('headers'):
+                kwargs['headers'] = self._general_configs['HttpHeaders']
+            else:
+                kwargs['headers'].update(self._general_configs['HttpHeaders'])
+        return f(self, *args, **kwargs)
+    return inner

backend/venv/lib/python3.9/site-packages/docker/utils/fnmatch.py

@@ -0,0 +1,115 @@
+"""Filename matching with shell patterns.
+
+fnmatch(FILENAME, PATTERN) matches according to the local convention.
+fnmatchcase(FILENAME, PATTERN) always takes case in account.
+
+The functions operate by translating the pattern into a regular
+expression.  They cache the compiled regular expressions for speed.
+
+The function translate(PATTERN) returns a regular expression
+corresponding to PATTERN.  (It does not compile it.)
+"""
+
+import re
+
+__all__ = ["fnmatch", "fnmatchcase", "translate"]
+
+_cache = {}
+_MAXCACHE = 100
+
+
+def _purge():
+    """Clear the pattern cache"""
+    _cache.clear()
+
+
+def fnmatch(name, pat):
+    """Test whether FILENAME matches PATTERN.
+
+    Patterns are Unix shell style:
+
+    *       matches everything
+    ?       matches any single character
+    [seq]   matches any character in seq
+    [!seq]  matches any char not in seq
+
+    An initial period in FILENAME is not special.
+    Both FILENAME and PATTERN are first case-normalized
+    if the operating system requires it.
+    If you don't want this, use fnmatchcase(FILENAME, PATTERN).
+    """
+
+    name = name.lower()
+    pat = pat.lower()
+    return fnmatchcase(name, pat)
+
+
+def fnmatchcase(name, pat):
+    """Test whether FILENAME matches PATTERN, including case.
+    This is a version of fnmatch() which doesn't case-normalize
+    its arguments.
+    """
+
+    try:
+        re_pat = _cache[pat]
+    except KeyError:
+        res = translate(pat)
+        if len(_cache) >= _MAXCACHE:
+            _cache.clear()
+        _cache[pat] = re_pat = re.compile(res)
+    return re_pat.match(name) is not None
+
+
+def translate(pat):
+    """Translate a shell PATTERN to a regular expression.
+
+    There is no way to quote meta-characters.
+    """
+    i, n = 0, len(pat)
+    res = '^'
+    while i < n:
+        c = pat[i]
+        i = i + 1
+        if c == '*':
+            if i < n and pat[i] == '*':
+                # is some flavor of "**"
+                i = i + 1
+                # Treat **/ as ** so eat the "/"
+                if i < n and pat[i] == '/':
+                    i = i + 1
+                if i >= n:
+                    # is "**EOF" - to align with .gitignore just accept all
+                    res = f"{res}.*"
+                else:
+                    # is "**"
+                    # Note that this allows for any # of /'s (even 0) because
+                    # the .* will eat everything, even /'s
+                    res = f"{res}(.*/)?"
+            else:
+                # is "*" so map it to anything but "/"
+                res = f"{res}[^/]*"
+        elif c == '?':
+            # "?" is any char except "/"
+            res = f"{res}[^/]"
+        elif c == '[':
+            j = i
+            if j < n and pat[j] == '!':
+                j = j + 1
+            if j < n and pat[j] == ']':
+                j = j + 1
+            while j < n and pat[j] != ']':
+                j = j + 1
+            if j >= n:
+                res = f"{res}\\["
+            else:
+                stuff = pat[i:j].replace('\\', '\\\\')
+                i = j + 1
+                if stuff[0] == '!':
+                    stuff = f"^{stuff[1:]}"
+                elif stuff[0] == '^':
+                    stuff = f"\\{stuff}"
+                res = f'{res}[{stuff}]'
+        else:
+            res = res + re.escape(c)
+
+    return f"{res}$"

backend/venv/lib/python3.9/site-packages/docker/utils/json_stream.py

@@ -0,0 +1,74 @@
+import json
+import json.decoder
+
+from ..errors import StreamParseError
+
+json_decoder = json.JSONDecoder()
+
+
+def stream_as_text(stream):
+    """
+    Given a stream of bytes or text, if any of the items in the stream
+    are bytes convert them to text.
+    This function can be removed once we return text streams
+    instead of byte streams.
+    """
+    for data in stream:
+        if not isinstance(data, str):
+            data = data.decode('utf-8', 'replace')
+        yield data
+
+
+def json_splitter(buffer):
+    """Attempt to parse a json object from a buffer. If there is at least one
+    object, return it and the rest of the buffer, otherwise return None.
+    """
+    buffer = buffer.strip()
+    try:
+        obj, index = json_decoder.raw_decode(buffer)
+        rest = buffer[json.decoder.WHITESPACE.match(buffer, index).end():]
+        return obj, rest
+    except ValueError:
+        return None
+
+
+def json_stream(stream):
+    """Given a stream of text, return a stream of json objects.
+    This handles streams which are inconsistently buffered (some entries may
+    be newline delimited, and others are not).
+    """
+    return split_buffer(stream, json_splitter, json_decoder.decode)
+
+
+def line_splitter(buffer, separator='\n'):
+    index = buffer.find(str(separator))
+    if index == -1:
+        return None
+    return buffer[:index + 1], buffer[index + 1:]
+
+
+def split_buffer(stream, splitter=None, decoder=lambda a: a):
+    """Given a generator which yields strings and a splitter function,
+    joins all input, splits on the separator and yields each chunk.
+    Unlike string.split(), each chunk includes the trailing
+    separator, except for the last one if none was found on the end
+    of the input.
+    """
+    splitter = splitter or line_splitter
+    buffered = ''
+
+    for data in stream_as_text(stream):
+        buffered += data
+        while True:
+            buffer_split = splitter(buffered)
+            if buffer_split is None:
+                break
+
+            item, buffered = buffer_split
+            yield item
+
+    if buffered:
+        try:
+            yield decoder(buffered)
+        except Exception as e:
+            raise StreamParseError(e) from e

backend/venv/lib/python3.9/site-packages/docker/utils/ports.py

@@ -0,0 +1,83 @@
+import re
+
+PORT_SPEC = re.compile(
+    "^"  # Match full string
+    "("  # External part
+    r"(\[?(?P<host>[a-fA-F\d.:]+)\]?:)?"  # Address
+    r"(?P<ext>[\d]*)(-(?P<ext_end>[\d]+))?:"  # External range
+    ")?"
+    r"(?P<int>[\d]+)(-(?P<int_end>[\d]+))?"  # Internal range
+    "(?P<proto>/(udp|tcp|sctp))?"  # Protocol
+    "$"  # Match full string
+)
+
+
+def add_port_mapping(port_bindings, internal_port, external):
+    if internal_port in port_bindings:
+        port_bindings[internal_port].append(external)
+    else:
+        port_bindings[internal_port] = [external]
+
+
+def add_port(port_bindings, internal_port_range, external_range):
+    if external_range is None:
+        for internal_port in internal_port_range:
+            add_port_mapping(port_bindings, internal_port, None)
+    else:
+        ports = zip(internal_port_range, external_range)
+        for internal_port, external_port in ports:
+            add_port_mapping(port_bindings, internal_port, external_port)
+
+
+def build_port_bindings(ports):
+    port_bindings = {}
+    for port in ports:
+        internal_port_range, external_range = split_port(port)
+        add_port(port_bindings, internal_port_range, external_range)
+    return port_bindings
+
+
+def _raise_invalid_port(port):
+    raise ValueError('Invalid port "%s", should be '
+                     '[[remote_ip:]remote_port[-remote_port]:]'
+                     'port[/protocol]' % port)
+
+
+def port_range(start, end, proto, randomly_available_port=False):
+    if not start:
+        return start
+    if not end:
+        return [start + proto]
+    if randomly_available_port:
+        return [f"{start}-{end}{proto}"]
+    return [str(port) + proto for port in range(int(start), int(end) + 1)]
+
+
+def split_port(port):
+    if hasattr(port, 'legacy_repr'):
+        # This is the worst hack, but it prevents a bug in Compose 1.14.0
+        # https://github.com/docker/docker-py/issues/1668
+        # TODO: remove once fixed in Compose stable
+        port = port.legacy_repr()
+    port = str(port)
+    match = PORT_SPEC.match(port)
+    if match is None:
+        _raise_invalid_port(port)
+    parts = match.groupdict()
+
+    host = parts['host']
+    proto = parts['proto'] or ''
+    internal = port_range(parts['int'], parts['int_end'], proto)
+    external = port_range(
+        parts['ext'], parts['ext_end'], '', len(internal) == 1)
+
+    if host is None:
+        if external is not None and len(internal) != len(external):
+            raise ValueError('Port ranges don\'t match in length')
+        return internal, external
+    else:
+        if not external:
+            external = [None] * len(internal)
+        elif len(internal) != len(external):
+            raise ValueError('Port ranges don\'t match in length')
+        return internal, [(host, ext_port) for ext_port in external]

backend/venv/lib/python3.9/site-packages/docker/utils/proxy.py

@@ -0,0 +1,77 @@
+from .utils import format_environment
+
+
+class ProxyConfig(dict):
+    '''
+    Hold the client's proxy configuration
+    '''
+    @property
+    def http(self):
+        return self.get('http')
+
+    @property
+    def https(self):
+        return self.get('https')
+
+    @property
+    def ftp(self):
+        return self.get('ftp')
+
+    @property
+    def no_proxy(self):
+        return self.get('no_proxy')
+
+    @staticmethod
+    def from_dict(config):
+        '''
+        Instantiate a new ProxyConfig from a dictionary that represents a
+        client configuration, as described in `the documentation`_.
+
+        .. _the documentation:
+            https://docs.docker.com/network/proxy/#configure-the-docker-client
+        '''
+        return ProxyConfig(
+            http=config.get('httpProxy'),
+            https=config.get('httpsProxy'),
+            ftp=config.get('ftpProxy'),
+            no_proxy=config.get('noProxy'),
+        )
+
+    def get_environment(self):
+        '''
+        Return a dictionary representing the environment variables used to
+        set the proxy settings.
+        '''
+        env = {}
+        if self.http:
+            env['http_proxy'] = env['HTTP_PROXY'] = self.http
+        if self.https:
+            env['https_proxy'] = env['HTTPS_PROXY'] = self.https
+        if self.ftp:
+            env['ftp_proxy'] = env['FTP_PROXY'] = self.ftp
+        if self.no_proxy:
+            env['no_proxy'] = env['NO_PROXY'] = self.no_proxy
+        return env
+
+    def inject_proxy_environment(self, environment):
+        '''
+        Given a list of strings representing environment variables, prepend the
+        environment variables corresponding to the proxy settings.
+        '''
+        if not self:
+            return environment
+
+        proxy_env = format_environment(self.get_environment())
+        if not environment:
+            return proxy_env
+        # It is important to prepend our variables, because we want the
+        # variables defined in "environment" to take precedence.
+        return proxy_env + environment
+
+    def __str__(self):
+        return (
+            'ProxyConfig('
+            f'http={self.http}, https={self.https}, '
+            f'ftp={self.ftp}, no_proxy={self.no_proxy}'
+            ')'
+        )

backend/venv/lib/python3.9/site-packages/docker/utils/socket.py

@@ -0,0 +1,187 @@
+import errno
+import os
+import select
+import socket as pysocket
+import struct
+
+try:
+    from ..transport import NpipeSocket
+except ImportError:
+    NpipeSocket = type(None)
+
+
+STDOUT = 1
+STDERR = 2
+
+
+class SocketError(Exception):
+    pass
+
+
+# NpipeSockets have their own error types
+# pywintypes.error: (109, 'ReadFile', 'The pipe has been ended.')
+NPIPE_ENDED = 109
+
+
+def read(socket, n=4096):
+    """
+    Reads at most n bytes from socket
+    """
+
+    recoverable_errors = (errno.EINTR, errno.EDEADLK, errno.EWOULDBLOCK)
+
+    if not isinstance(socket, NpipeSocket):
+        if not hasattr(select, "poll"):
+            # Limited to 1024
+            select.select([socket], [], [])
+        else:
+            poll = select.poll()
+            poll.register(socket, select.POLLIN | select.POLLPRI)
+            poll.poll()
+
+    try:
+        if hasattr(socket, 'recv'):
+            return socket.recv(n)
+        if isinstance(socket, pysocket.SocketIO):
+            return socket.read(n)
+        return os.read(socket.fileno(), n)
+    except OSError as e:
+        if e.errno not in recoverable_errors:
+            raise
+    except Exception as e:
+        is_pipe_ended = (isinstance(socket, NpipeSocket) and
+                         len(e.args) > 0 and
+                         e.args[0] == NPIPE_ENDED)
+        if is_pipe_ended:
+            # npipes don't support duplex sockets, so we interpret
+            # a PIPE_ENDED error as a close operation (0-length read).
+            return ''
+        raise
+
+
+def read_exactly(socket, n):
+    """
+    Reads exactly n bytes from socket
+    Raises SocketError if there isn't enough data
+    """
+    data = b""
+    while len(data) < n:
+        next_data = read(socket, n - len(data))
+        if not next_data:
+            raise SocketError("Unexpected EOF")
+        data += next_data
+    return data
+
+
+def next_frame_header(socket):
+    """
+    Returns the stream and size of the next frame of data waiting to be read
+    from socket, according to the protocol defined here:
+
+    https://docs.docker.com/engine/api/v1.24/#attach-to-a-container
+    """
+    try:
+        data = read_exactly(socket, 8)
+    except SocketError:
+        return (-1, -1)
+
+    stream, actual = struct.unpack('>BxxxL', data)
+    return (stream, actual)
+
+
+def frames_iter(socket, tty):
+    """
+    Return a generator of frames read from socket. A frame is a tuple where
+    the first item is the stream number and the second item is a chunk of data.
+
+    If the tty setting is enabled, the streams are multiplexed into the stdout
+    stream.
+    """
+    if tty:
+        return ((STDOUT, frame) for frame in frames_iter_tty(socket))
+    else:
+        return frames_iter_no_tty(socket)
+
+
+def frames_iter_no_tty(socket):
+    """
+    Returns a generator of data read from the socket when the tty setting is
+    not enabled.
+    """
+    while True:
+        (stream, n) = next_frame_header(socket)
+        if n < 0:
+            break
+        while n > 0:
+            result = read(socket, n)
+            if result is None:
+                continue
+            data_length = len(result)
+            if data_length == 0:
+                # We have reached EOF
+                return
+            n -= data_length
+            yield (stream, result)
+
+
+def frames_iter_tty(socket):
+    """
+    Return a generator of data read from the socket when the tty setting is
+    enabled.
+    """
+    while True:
+        result = read(socket)
+        if len(result) == 0:
+            # We have reached EOF
+            return
+        yield result
+
+
+def consume_socket_output(frames, demux=False):
+    """
+    Iterate through frames read from the socket and return the result.
+
+    Args:
+
+        demux (bool):
+            If False, stdout and stderr are multiplexed, and the result is the
+            concatenation of all the frames. If True, the streams are
+            demultiplexed, and the result is a 2-tuple where each item is the
+            concatenation of frames belonging to the same stream.
+    """
+    if demux is False:
+        # If the streams are multiplexed, the generator returns strings, that
+        # we just need to concatenate.
+        return b"".join(frames)
+
+    # If the streams are demultiplexed, the generator yields tuples
+    # (stdout, stderr)
+    out = [None, None]
+    for frame in frames:
+        # It is guaranteed that for each frame, one and only one stream
+        # is not None.
+        assert frame != (None, None)
+        if frame[0] is not None:
+            if out[0] is None:
+                out[0] = frame[0]
+            else:
+                out[0] += frame[0]
+        else:
+            if out[1] is None:
+                out[1] = frame[1]
+            else:
+                out[1] += frame[1]
+    return tuple(out)
+
+
+def demux_adaptor(stream_id, data):
+    """
+    Utility to demultiplex stdout and stderr when reading frames from the
+    socket.
+    """
+    if stream_id == STDOUT:
+        return (data, None)
+    elif stream_id == STDERR:
+        return (None, data)
+    else:
+        raise ValueError(f'{stream_id} is not a valid stream')

backend/venv/lib/python3.9/site-packages/docker/utils/utils.py

@@ -0,0 +1,517 @@
+import base64
+import collections
+import json
+import os
+import os.path
+import shlex
+import string
+from datetime import datetime, timezone
+from functools import lru_cache
+from itertools import zip_longest
+from urllib.parse import urlparse, urlunparse
+
+from .. import errors
+from ..constants import (
+    BYTE_UNITS,
+    DEFAULT_HTTP_HOST,
+    DEFAULT_NPIPE,
+    DEFAULT_UNIX_SOCKET,
+)
+from ..tls import TLSConfig
+
+URLComponents = collections.namedtuple(
+    'URLComponents',
+    'scheme netloc url params query fragment',
+)
+
+
+def create_ipam_pool(*args, **kwargs):
+    raise errors.DeprecatedMethod(
+        'utils.create_ipam_pool has been removed. Please use a '
+        'docker.types.IPAMPool object instead.'
+    )
+
+
+def create_ipam_config(*args, **kwargs):
+    raise errors.DeprecatedMethod(
+        'utils.create_ipam_config has been removed. Please use a '
+        'docker.types.IPAMConfig object instead.'
+    )
+
+
+def decode_json_header(header):
+    data = base64.b64decode(header)
+    data = data.decode('utf-8')
+    return json.loads(data)
+
+
+@lru_cache(maxsize=None)
+def compare_version(v1, v2):
+    """Compare docker versions
+
+    >>> v1 = '1.9'
+    >>> v2 = '1.10'
+    >>> compare_version(v1, v2)
+    1
+    >>> compare_version(v2, v1)
+    -1
+    >>> compare_version(v2, v2)
+    0
+    """
+    if v1 == v2:
+        return 0
+    # Split into `sys.version_info` like tuples.
+    s1 = tuple(int(p) for p in v1.split('.'))
+    s2 = tuple(int(p) for p in v2.split('.'))
+    # Compare each component, padding with 0 if necessary.
+    for c1, c2 in zip_longest(s1, s2, fillvalue=0):
+        if c1 == c2:
+            continue
+        elif c1 > c2:
+            return -1
+        else:
+            return 1
+    return 0
+
+
+def version_lt(v1, v2):
+    return compare_version(v1, v2) > 0
+
+
+def version_gte(v1, v2):
+    return not version_lt(v1, v2)
+
+
+def _convert_port_binding(binding):
+    result = {'HostIp': '', 'HostPort': ''}
+    if isinstance(binding, tuple):
+        if len(binding) == 2:
+            result['HostPort'] = binding[1]
+            result['HostIp'] = binding[0]
+        elif isinstance(binding[0], str):
+            result['HostIp'] = binding[0]
+        else:
+            result['HostPort'] = binding[0]
+    elif isinstance(binding, dict):
+        if 'HostPort' in binding:
+            result['HostPort'] = binding['HostPort']
+            if 'HostIp' in binding:
+                result['HostIp'] = binding['HostIp']
+        else:
+            raise ValueError(binding)
+    else:
+        result['HostPort'] = binding
+
+    if result['HostPort'] is None:
+        result['HostPort'] = ''
+    else:
+        result['HostPort'] = str(result['HostPort'])
+
+    return result
+
+
+def convert_port_bindings(port_bindings):
+    result = {}
+    for k, v in iter(port_bindings.items()):
+        key = str(k)
+        if '/' not in key:
+            key += '/tcp'
+        if isinstance(v, list):
+            result[key] = [_convert_port_binding(binding) for binding in v]
+        else:
+            result[key] = [_convert_port_binding(v)]
+    return result
+
+
+def convert_volume_binds(binds):
+    if isinstance(binds, list):
+        return binds
+
+    result = []
+    for k, v in binds.items():
+        if isinstance(k, bytes):
+            k = k.decode('utf-8')
+
+        if isinstance(v, dict):
+            if 'ro' in v and 'mode' in v:
+                raise ValueError(
+                    f'Binding cannot contain both "ro" and "mode": {v!r}'
+                )
+
+            bind = v['bind']
+            if isinstance(bind, bytes):
+                bind = bind.decode('utf-8')
+
+            if 'ro' in v:
+                mode = 'ro' if v['ro'] else 'rw'
+            elif 'mode' in v:
+                mode = v['mode']
+            else:
+                mode = 'rw'
+
+            # NOTE: this is only relevant for Linux hosts
+            # (doesn't apply in Docker Desktop)
+            propagation_modes = [
+                'rshared',
+                'shared',
+                'rslave',
+                'slave',
+                'rprivate',
+                'private',
+            ]
+            if 'propagation' in v and v['propagation'] in propagation_modes:
+                if mode:
+                    mode = f"{mode},{v['propagation']}"
+                else:
+                    mode = v['propagation']
+
+            result.append(
+                f'{k}:{bind}:{mode}'
+            )
+        else:
+            if isinstance(v, bytes):
+                v = v.decode('utf-8')
+            result.append(
+                f'{k}:{v}:rw'
+            )
+    return result
+
+
+def convert_tmpfs_mounts(tmpfs):
+    if isinstance(tmpfs, dict):
+        return tmpfs
+
+    if not isinstance(tmpfs, list):
+        raise ValueError(
+            'Expected tmpfs value to be either a list or a dict, '
+            f'found: {type(tmpfs).__name__}'
+        )
+
+    result = {}
+    for mount in tmpfs:
+        if isinstance(mount, str):
+            if ":" in mount:
+                name, options = mount.split(":", 1)
+            else:
+                name = mount
+                options = ""
+
+        else:
+            raise ValueError(
+                "Expected item in tmpfs list to be a string, "
+                f"found: {type(mount).__name__}"
+            )
+
+        result[name] = options
+    return result
+
+
+def convert_service_networks(networks):
+    if not networks:
+        return networks
+    if not isinstance(networks, list):
+        raise TypeError('networks parameter must be a list.')
+
+    result = []
+    for n in networks:
+        if isinstance(n, str):
+            n = {'Target': n}
+        result.append(n)
+    return result
+
+
+def parse_repository_tag(repo_name):
+    parts = repo_name.rsplit('@', 1)
+    if len(parts) == 2:
+        return tuple(parts)
+    parts = repo_name.rsplit(':', 1)
+    if len(parts) == 2 and '/' not in parts[1]:
+        return tuple(parts)
+    return repo_name, None
+
+
+def parse_host(addr, is_win32=False, tls=False):
+    # Sensible defaults
+    if not addr and is_win32:
+        return DEFAULT_NPIPE
+    if not addr or addr.strip() == 'unix://':
+        return DEFAULT_UNIX_SOCKET
+
+    addr = addr.strip()
+
+    parsed_url = urlparse(addr)
+    proto = parsed_url.scheme
+    if not proto or any(x not in f"{string.ascii_letters}+" for x in proto):
+        # https://bugs.python.org/issue754016
+        parsed_url = urlparse(f"//{addr}", 'tcp')
+        proto = 'tcp'
+
+    if proto == 'fd':
+        raise errors.DockerException('fd protocol is not implemented')
+
+    # These protos are valid aliases for our library but not for the
+    # official spec
+    if proto == 'http' or proto == 'https':
+        tls = proto == 'https'
+        proto = 'tcp'
+    elif proto == 'http+unix':
+        proto = 'unix'
+
+    if proto not in ('tcp', 'unix', 'npipe', 'ssh'):
+        raise errors.DockerException(
+            f"Invalid bind address protocol: {addr}"
+        )
+
+    if proto == 'tcp' and not parsed_url.netloc:
+        # "tcp://" is exceptionally disallowed by convention;
+        # omitting a hostname for other protocols is fine
+        raise errors.DockerException(
+            f'Invalid bind address format: {addr}'
+        )
+
+    if any([
+        parsed_url.params, parsed_url.query, parsed_url.fragment,
+        parsed_url.password
+    ]):
+        raise errors.DockerException(
+            f'Invalid bind address format: {addr}'
+        )
+
+    if parsed_url.path and proto == 'ssh':
+        raise errors.DockerException(
+            f'Invalid bind address format: no path allowed for this protocol: {addr}'
+        )
+    else:
+        path = parsed_url.path
+        if proto == 'unix' and parsed_url.hostname is not None:
+            # For legacy reasons, we consider unix://path
+            # to be valid and equivalent to unix:///path
+            path = f"{parsed_url.hostname}/{path}"
+
+    netloc = parsed_url.netloc
+    if proto in ('tcp', 'ssh'):
+        port = parsed_url.port or 0
+        if port <= 0:
+            if proto != 'ssh':
+                raise errors.DockerException(
+                    f'Invalid bind address format: port is required: {addr}'
+                )
+            port = 22
+            netloc = f'{parsed_url.netloc}:{port}'
+
+        if not parsed_url.hostname:
+            netloc = f'{DEFAULT_HTTP_HOST}:{port}'
+
+    # Rewrite schemes to fit library internals (requests adapters)
+    if proto == 'tcp':
+        proto = f"http{'s' if tls else ''}"
+    elif proto == 'unix':
+        proto = 'http+unix'
+
+    if proto in ('http+unix', 'npipe'):
+        return f"{proto}://{path}".rstrip('/')
+
+    return urlunparse(URLComponents(
+        scheme=proto,
+        netloc=netloc,
+        url=path,
+        params='',
+        query='',
+        fragment='',
+    )).rstrip('/')
+
+
+def parse_devices(devices):
+    device_list = []
+    for device in devices:
+        if isinstance(device, dict):
+            device_list.append(device)
+            continue
+        if not isinstance(device, str):
+            raise errors.DockerException(
+                f'Invalid device type {type(device)}'
+            )
+        device_mapping = device.split(':')
+        if device_mapping:
+            path_on_host = device_mapping[0]
+            if len(device_mapping) > 1:
+                path_in_container = device_mapping[1]
+            else:
+                path_in_container = path_on_host
+            if len(device_mapping) > 2:
+                permissions = device_mapping[2]
+            else:
+                permissions = 'rwm'
+            device_list.append({
+                'PathOnHost': path_on_host,
+                'PathInContainer': path_in_container,
+                'CgroupPermissions': permissions
+            })
+    return device_list
+
+
+def kwargs_from_env(environment=None):
+    if not environment:
+        environment = os.environ
+    host = environment.get('DOCKER_HOST')
+
+    # empty string for cert path is the same as unset.
+    cert_path = environment.get('DOCKER_CERT_PATH') or None
+
+    # empty string for tls verify counts as "false".
+    # Any value or 'unset' counts as true.
+    tls_verify = environment.get('DOCKER_TLS_VERIFY')
+    if tls_verify == '':
+        tls_verify = False
+    else:
+        tls_verify = tls_verify is not None
+    enable_tls = cert_path or tls_verify
+
+    params = {}
+
+    if host:
+        params['base_url'] = host
+
+    if not enable_tls:
+        return params
+
+    if not cert_path:
+        cert_path = os.path.join(os.path.expanduser('~'), '.docker')
+
+    params['tls'] = TLSConfig(
+        client_cert=(os.path.join(cert_path, 'cert.pem'),
+                     os.path.join(cert_path, 'key.pem')),
+        ca_cert=os.path.join(cert_path, 'ca.pem'),
+        verify=tls_verify,
+    )
+
+    return params
+
+
+def convert_filters(filters):
+    result = {}
+    for k, v in iter(filters.items()):
+        if isinstance(v, bool):
+            v = 'true' if v else 'false'
+        if not isinstance(v, list):
+            v = [v, ]
+        result[k] = [
+            str(item) if not isinstance(item, str) else item
+            for item in v
+        ]
+    return json.dumps(result)
+
+
+def datetime_to_timestamp(dt):
+    """Convert a datetime to a Unix timestamp"""
+    delta = dt.astimezone(timezone.utc) - datetime(1970, 1, 1, tzinfo=timezone.utc)
+    return delta.seconds + delta.days * 24 * 3600
+
+
+def parse_bytes(s):
+    if isinstance(s, (int, float,)):
+        return s
+    if len(s) == 0:
+        return 0
+
+    if s[-2:-1].isalpha() and s[-1].isalpha():
+        if s[-1] == "b" or s[-1] == "B":
+            s = s[:-1]
+    units = BYTE_UNITS
+    suffix = s[-1].lower()
+
+    # Check if the variable is a string representation of an int
+    # without a units part. Assuming that the units are bytes.
+    if suffix.isdigit():
+        digits_part = s
+        suffix = 'b'
+    else:
+        digits_part = s[:-1]
+
+    if suffix in units.keys() or suffix.isdigit():
+        try:
+            digits = float(digits_part)
+        except ValueError as ve:
+            raise errors.DockerException(
+                'Failed converting the string value for memory '
+                f'({digits_part}) to an integer.'
+            ) from ve
+
+        # Reconvert to long for the final result
+        s = int(digits * units[suffix])
+    else:
+        raise errors.DockerException(
+            f'The specified value for memory ({s}) should specify the units. '
+            'The postfix should be one of the `b` `k` `m` `g` characters'
+        )
+
+    return s
+
+
+def normalize_links(links):
+    if isinstance(links, dict):
+        links = iter(links.items())
+
+    return [f'{k}:{v}' if v else k for k, v in sorted(links)]
+
+
+def parse_env_file(env_file):
+    """
+    Reads a line-separated environment file.
+    The format of each line should be "key=value".
+    """
+    environment = {}
+
+    with open(env_file) as f:
+        for line in f:
+
+            if line[0] == '#':
+                continue
+
+            line = line.strip()
+            if not line:
+                continue
+
+            parse_line = line.split('=', 1)
+            if len(parse_line) == 2:
+                k, v = parse_line
+                environment[k] = v
+            else:
+                raise errors.DockerException(
+                    f'Invalid line in environment file {env_file}:\n{line}')
+
+    return environment
+
+
+def split_command(command):
+    return shlex.split(command)
+
+
+def format_environment(environment):
+    def format_env(key, value):
+        if value is None:
+            return key
+        if isinstance(value, bytes):
+            value = value.decode('utf-8')
+
+        return f'{key}={value}'
+    return [format_env(*var) for var in iter(environment.items())]
+
+
+def format_extra_hosts(extra_hosts, task=False):
+    # Use format dictated by Swarm API if container is part of a task
+    if task:
+        return [
+            f'{v} {k}' for k, v in sorted(iter(extra_hosts.items()))
+        ]
+
+    return [
+        f'{k}:{v}' for k, v in sorted(iter(extra_hosts.items()))
+    ]
+
+
+def create_host_config(self, *args, **kwargs):
+    raise errors.DeprecatedMethod(
+        'utils.create_host_config has been removed. Please use a '
+        'docker.types.HostConfig object instead.'
+    )