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Dir : //proc/self/root/opt/saltstack/salt/lib/python3.10/site-packages/salt/cli/cp.py

"""
The cp module is used to execute the logic used by the salt-cp command
line application, salt-cp is NOT intended to broadcast large files, it is
intended to handle text files.
Salt-cp can be used to distribute configuration files
"""

import base64
import errno
import logging
import os
import re
import sys

import salt.client
import salt.output
import salt.utils.files
import salt.utils.gzip_util
import salt.utils.itertools
import salt.utils.minions
import salt.utils.parsers
import salt.utils.platform
import salt.utils.stringutils
import salt.utils.verify

log = logging.getLogger(__name__)


class SaltCPCli(salt.utils.parsers.SaltCPOptionParser):
    """
    Run the salt-cp command line client
    """

    def run(self):
        """
        Execute salt-cp
        """
        self.parse_args()
        cp_ = SaltCP(self.config)
        cp_.run()


class SaltCP:
    """
    Create a salt cp object, used to distribute simple files with salt
    """

    def __init__(self, opts):
        self.opts = opts
        self.is_windows = salt.utils.platform.is_windows()

    def _mode(self, path):
        if self.is_windows:
            return None
        try:
            return int(oct(os.stat(path).st_mode)[-4:], 8)
        except (TypeError, IndexError, ValueError):
            return None

    def _recurse(self, path):
        """
        Get a list of all specified files
        """
        files = {}
        empty_dirs = []
        try:
            sub_paths = os.listdir(path)
        except OSError as exc:
            if exc.errno == errno.ENOENT:
                # Path does not exist
                sys.stderr.write(f"{path} does not exist\n")
                sys.exit(42)
            elif exc.errno in (errno.EINVAL, errno.ENOTDIR):
                # Path is a file (EINVAL on Windows, ENOTDIR otherwise)
                files[path] = self._mode(path)
        else:
            if not sub_paths:
                empty_dirs.append(path)
            for fn_ in sub_paths:
                files_, empty_dirs_ = self._recurse(os.path.join(path, fn_))
                files.update(files_)
                empty_dirs.extend(empty_dirs_)

        return files, empty_dirs

    def _list_files(self):
        files = {}
        empty_dirs = set()
        for fn_ in self.opts["src"]:
            files_, empty_dirs_ = self._recurse(fn_)
            files.update(files_)
            empty_dirs.update(empty_dirs_)
        return files, sorted(empty_dirs)

    def _file_dict(self, fn_):
        """
        Take a path and return the contents of the file as a string
        """
        if not os.path.isfile(fn_):
            err = f"The referenced file, {fn_} is not available."
            sys.stderr.write(err + "\n")
            sys.exit(42)
        with salt.utils.files.fopen(fn_, "r") as fp_:
            data = fp_.read()
        return {fn_: data}

    def _load_files(self):
        """
        Parse the files indicated in opts['src'] and load them into a python
        object for transport
        """
        files = {}
        for fn_ in self.opts["src"]:
            if os.path.isfile(fn_):
                files.update(self._file_dict(fn_))
            elif os.path.isdir(fn_):
                salt.utils.stringutils.print_cli(
                    "{} is a directory, only files are supported "
                    'in non-chunked mode. Use "--chunked" command '
                    "line argument.".format(fn_)
                )
                sys.exit(1)
        return files

    def run(self):
        """
        Make the salt client call
        """
        if self.opts["chunked"]:
            ret = self.run_chunked()
        else:
            ret = self.run_oldstyle()

        salt.output.display_output(ret, self.opts.get("output", "nested"), self.opts)

    def run_oldstyle(self):
        """
        Make the salt client call in old-style all-in-one call method
        """
        arg = [self._load_files(), self.opts["dest"]]
        args = [
            self.opts["tgt"],
            "cp.recv",
            arg,
            self.opts["timeout"],
        ]

        selected_target_option = self.opts.get("selected_target_option", None)
        if selected_target_option is not None:
            args.append(selected_target_option)

        with salt.client.get_local_client(self.opts["conf_file"]) as local:
            return local.cmd(*args)

    def run_chunked(self):
        """
        Make the salt client call in the new fasion chunked multi-call way
        """
        files, empty_dirs = self._list_files()
        dest = self.opts["dest"]
        gzip = self.opts["gzip"]
        tgt = self.opts["tgt"]
        timeout = self.opts["timeout"]
        selected_target_option = self.opts.get("selected_target_option")

        dest_is_dir = (
            bool(empty_dirs) or len(files) > 1 or bool(re.search(r"[\\/]$", dest))
        )

        reader = (
            salt.utils.gzip_util.compress_file
            if gzip
            else salt.utils.itertools.read_file
        )

        _res = salt.utils.minions.CkMinions(self.opts).check_minions(
            tgt, tgt_type=selected_target_option or "glob"
        )
        minions = _res["minions"]

        def _get_remote_path(fn_):
            if fn_ in self.opts["src"]:
                # This was a filename explicitly passed on the CLI
                return (
                    os.path.join(dest, os.path.basename(fn_)) if dest_is_dir else dest
                )
            else:
                for path in self.opts["src"]:
                    relpath = os.path.relpath(fn_, path + os.sep)
                    if relpath.startswith(parent):
                        # File is not within this dir
                        continue
                    return os.path.join(dest, os.path.basename(path), relpath)
                else:  # pylint: disable=useless-else-on-loop
                    # Should not happen
                    log.error("Failed to find remote path for %s", fn_)
                    return None

        ret = {}
        parent = ".." + os.sep

        with salt.client.get_local_client(self.opts["conf_file"]) as local:
            for fn_, mode in files.items():
                remote_path = _get_remote_path(fn_)

                index = 1
                failed = {}
                for chunk in reader(fn_, chunk_size=self.opts["salt_cp_chunk_size"]):
                    chunk = base64.b64encode(salt.utils.stringutils.to_bytes(chunk))
                    append = index > 1
                    log.debug(
                        "Copying %s to %starget '%s' as %s%s",
                        fn_,
                        f"{selected_target_option} " if selected_target_option else "",
                        tgt,
                        remote_path,
                        f" (chunk #{index})" if append else "",
                    )
                    args = [
                        tgt,
                        "cp.recv_chunked",
                        [remote_path, chunk, append, gzip, mode],
                        timeout,
                    ]
                    if selected_target_option is not None:
                        args.append(selected_target_option)

                    result = local.cmd(*args)

                    if not result:
                        # Publish failed
                        msg = (
                            "Publish failed.{} It may be necessary to "
                            "decrease salt_cp_chunk_size (current value: "
                            "{})".format(
                                " File partially transferred." if index > 1 else "",
                                self.opts["salt_cp_chunk_size"],
                            )
                        )
                        for minion in minions:
                            ret.setdefault(minion, {})[remote_path] = msg
                        break

                    for minion_id, minion_ret in result.items():
                        ret.setdefault(minion_id, {})[remote_path] = minion_ret
                        # Catch first error message for a given minion, we will
                        # rewrite the results after we're done iterating through
                        # the chunks.
                        if minion_ret is not True and minion_id not in failed:
                            failed[minion_id] = minion_ret

                    index += 1

                for minion_id, msg in failed.items():
                    ret[minion_id][remote_path] = msg

            for dirname in empty_dirs:
                remote_path = _get_remote_path(dirname)
                log.debug(
                    "Creating empty dir %s on %starget '%s'",
                    dirname,
                    f"{selected_target_option} " if selected_target_option else "",
                    tgt,
                )
                args = [tgt, "cp.recv_chunked", [remote_path, None], timeout]
                if selected_target_option is not None:
                    args.append(selected_target_option)

                for minion_id, minion_ret in local.cmd(*args).items():
                    ret.setdefault(minion_id, {})[remote_path] = minion_ret

            return ret