晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。 　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。 　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔 一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。 　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 .
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Current File : //usr/share/fwupd/firmware_packager.py
#!/usr/libexec/platform-python
#
# Copyright (C) 2017 Max Ehrlich maxehr@gmail.com
#
# SPDX-License-Identifier: LGPL-2.1+
#

import argparse
import subprocess
import contextlib
import os
import shutil
import tempfile
import time


@contextlib.contextmanager
def cd(path):
    prev_cwd = os.getcwd()
    os.chdir(path)
    yield
    os.chdir(prev_cwd)


firmware_metainfo_template = """<?xml version="1.0" encoding="UTF-8"?>
<component type="firmware">
  <id>org.{developer_name}.guid{firmware_id}</id>
  <name>{firmware_name}</name>
  <summary>{firmware_summary}</summary>
  <description>
    {firmware_description}
  </description>
  <provides>
    <firmware type="flashed">{device_guid}</firmware>
  </provides>
  <url type="homepage">{firmware_homepage}</url>
  <metadata_license>CC0-1.0</metadata_license>
  <project_license>proprietary</project_license>
  <updatecontact>{contact_info}</updatecontact>
  <developer_name>{developer_name}</developer_name>
  <releases>
    <release version="{release_version}" timestamp="{timestamp}">
      <description>
        {release_description}
      </description>
    </release>
  </releases>
  <custom>
    <value key="LVFS::VersionFormat">{version_format}</value>
    <value key="LVFS::UpdateProtocol">{update_protocol}</value>
  </custom>
</component>
"""


def make_firmware_metainfo(firmware_info, dst):
    local_info = vars(firmware_info)
    local_info["firmware_id"] = local_info["device_guid"][0:8]
    firmware_metainfo = firmware_metainfo_template.format(
        **local_info, timestamp=time.time()
    )

    with open(os.path.join(dst, "firmware.metainfo.xml"), "w") as f:
        f.write(firmware_metainfo)


def extract_exe(exe, dst):
    command = ["7z", "x", "-o{}".format(dst), exe]
    subprocess.check_call(command, stdout=subprocess.DEVNULL)


def get_firmware_bin(root, bin_path, dst):
    with cd(root):
        shutil.copy(bin_path, os.path.join(dst, "firmware.bin"))


def create_firmware_cab(exe, folder):
    with cd(folder):
        if os.name == "nt":
            directive = os.path.join(folder, "directive")
            with open(directive, "w") as wfd:
                wfd.write(".OPTION EXPLICIT\r\n")
                wfd.write(".Set CabinetNameTemplate=firmware.cab\r\n")
                wfd.write(".Set DiskDirectory1=.\r\n")
                wfd.write("firmware.bin\r\n")
                wfd.write("firmware.metainfo.xml\r\n")
            command = ["makecab.exe", "/f", directive]
        else:
            command = [
                "gcab",
                "--create",
                "firmware.cab",
                "firmware.bin",
                "firmware.metainfo.xml",
            ]
        subprocess.check_call(command)


def main(args):
    with tempfile.TemporaryDirectory() as d:
        print("Using temp directory {}".format(d))

        if args.exe:
            print("Extracting firmware exe")
            extract_exe(args.exe, d)

        print("Locating firmware bin")
        get_firmware_bin(d, args.bin, d)

        print("Creating metainfo")
        make_firmware_metainfo(args, d)

        print("Creating cabinet file")
        create_firmware_cab(args, d)

        print("Done")
        shutil.copy(os.path.join(d, "firmware.cab"), args.out)


if __name__ == "__main__":
    parser = argparse.ArgumentParser(
        description="Create fwupd packaged from windows executables"
    )
    parser.add_argument(
        "--firmware-name",
        help="Name of the firmware package can be customized (e.g. DellTBT)",
        required=True,
    )
    parser.add_argument(
        "--firmware-summary", help="One line description of the firmware package"
    )
    parser.add_argument(
        "--firmware-description", help="Longer description of the firmware package"
    )
    parser.add_argument(
        "--device-guid",
        help="GUID of the device this firmware will run on, this *must* match the output of one of the GUIDs in `fwupdmgr get-devices`",
        required=True,
    )
    parser.add_argument("--firmware-homepage", help="Website for the firmware provider")
    parser.add_argument(
        "--contact-info", help="Email address of the firmware developer"
    )
    parser.add_argument(
        "--developer-name", help="Name of the firmware developer", required=True
    )
    parser.add_argument(
        "--release-version",
        help="Version number of the firmware package",
        required=True,
    )
    parser.add_argument(
        "--version-format",
        help="Version format, e.g. quad or triplet",
        required=True,
    )
    parser.add_argument(
        "--update-protocol",
        help="Update protocol, e.g. org.uefi.capsule",
        required=True,
    )
    parser.add_argument(
        "--release-description", help="Description of the firmware release"
    )
    parser.add_argument(
        "--exe", help="(optional) Executable file to extract firmware from"
    )
    parser.add_argument(
        "--bin",
        help="Path to the .bin file (Relative if inside the executable; Absolute if outside) to use as the firmware image",
        required=True,
    )
    parser.add_argument("--out", help="Output cab file path", required=True)
    args = parser.parse_args()

    main(args)

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