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# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
import os
import platform
import shutil
import subprocess
from pathlib import Path
from typing import List
import mozfile
from mozbuild.dirutils import ensureParentDir
is_linux = platform.system() == "Linux"
is_osx = platform.system() == "Darwin"
def chmod(dir):
"Set permissions of DMG contents correctly"
subprocess.check_call(["chmod", "-R", "a+rX,a-st,u+w,go-w", dir])
def rsync(source: Path, dest: Path):
"rsync the contents of directory source into directory dest"
# Ensure a trailing slash on directories so rsync copies the *contents* of source.
raw_source = str(source)
if source.is_dir():
raw_source = str(source) + "/"
subprocess.check_call(["rsync", "-a", "--copy-unsafe-links", raw_source, dest])
def set_folder_icon(dir: Path, tmpdir: Path, hfs_tool: Path = None):
"Set HFS attributes of dir to use a custom icon"
if is_linux:
hfs = tmpdir / "staged.hfs"
subprocess.check_call([hfs_tool, hfs, "attr", "/", "C"])
elif is_osx:
subprocess.check_call(["SetFile", "-a", "C", dir])
def generate_hfs_file(
stagedir: Path, tmpdir: Path, volume_name: str, mkfshfs_tool: Path
):
"""
When cross compiling, we zero fill an hfs file, that we will turn into
a DMG. To do so we test the size of the staged dir, and add some slight
padding to that.
"""
hfs = tmpdir / "staged.hfs"
output = subprocess.check_output(["du", "-s", stagedir])
size = int(output.split()[0]) / 1000 # Get in MB
size = int(size * 1.02) # Bump the used size slightly larger.
# Setup a proper file sized out with zero's
subprocess.check_call(
[
"dd",
"if=/dev/zero",
"of={}".format(hfs),
"bs=1M",
"count={}".format(size),
]
)
subprocess.check_call([mkfshfs_tool, "-v", volume_name, hfs])
def create_app_symlink(stagedir: Path, tmpdir: Path, hfs_tool: Path = None):
"""
Make a symlink to /Applications. The symlink name is a space
so we don't have to localize it. The Applications folder icon
will be shown in Finder, which should be clear enough for users.
"""
if is_linux:
hfs = os.path.join(tmpdir, "staged.hfs")
subprocess.check_call([hfs_tool, hfs, "symlink", "/ ", "/Applications"])
elif is_osx:
os.symlink("/Applications", stagedir / " ")
def create_dmg_from_staged(
stagedir: Path,
output_dmg: Path,
tmpdir: Path,
volume_name: str,
hfs_tool: Path = None,
dmg_tool: Path = None,
mkfshfs_tool: Path = None,
attribution_sentinel: str = None,
):
"Given a prepared directory stagedir, produce a DMG at output_dmg."
if is_linux:
# The dmg tool doesn't create the destination directories, and silently
# returns success if the parent directory doesn't exist.
ensureParentDir(output_dmg)
hfs = os.path.join(tmpdir, "staged.hfs")
subprocess.check_call([hfs_tool, hfs, "addall", stagedir])
dmg_cmd = [dmg_tool, "build", hfs, output_dmg]
if attribution_sentinel:
while len(attribution_sentinel) < 1024:
attribution_sentinel += "\t"
subprocess.check_call(
[
hfs_tool,
hfs,
"setattr",
f"{volume_name}.app",
"com.apple.application-instance",
attribution_sentinel,
]
)
subprocess.check_call(["cp", hfs, str(Path(output_dmg).parent)])
dmg_cmd.append(attribution_sentinel)
subprocess.check_call(
dmg_cmd,
# dmg is seriously chatty
stdout=subprocess.DEVNULL,
)
elif is_osx:
hybrid = tmpdir / "hybrid.dmg"
subprocess.check_call(
[
"hdiutil",
"makehybrid",
"-hfs",
"-hfs-volume-name",
volume_name,
"-hfs-openfolder",
stagedir,
"-ov",
stagedir,
"-o",
hybrid,
]
)
subprocess.check_call(
[
"hdiutil",
"convert",
"-format",
"UDBZ",
"-imagekey",
"bzip2-level=9",
"-ov",
hybrid,
"-o",
output_dmg,
]
)
def create_dmg(
source_directory: Path,
output_dmg: Path,
volume_name: str,
extra_files: List[tuple],
dmg_tool: Path,
hfs_tool: Path,
mkfshfs_tool: Path,
attribution_sentinel: str = None,
):
"""
Create a DMG disk image at the path output_dmg from source_directory.
Use volume_name as the disk image volume name, and
use extra_files as a list of tuples of (filename, relative path) to copy
into the disk image.
"""
if platform.system() not in ("Darwin", "Linux"):
raise Exception("Don't know how to build a DMG on '%s'" % platform.system())
with mozfile.TemporaryDirectory() as tmp:
tmpdir = Path(tmp)
stagedir = tmpdir / "stage"
stagedir.mkdir()
# Copy the app bundle over using rsync
rsync(source_directory, stagedir)
# Copy extra files
for source, target in extra_files:
full_target = stagedir / target
full_target.parent.mkdir(parents=True, exist_ok=True)
shutil.copyfile(source, full_target)
if is_linux:
# Not needed in osx
generate_hfs_file(stagedir, tmpdir, volume_name, mkfshfs_tool)
create_app_symlink(stagedir, tmpdir, hfs_tool)
# Set the folder attributes to use a custom icon
set_folder_icon(stagedir, tmpdir, hfs_tool)
chmod(stagedir)
create_dmg_from_staged(
stagedir,
output_dmg,
tmpdir,
volume_name,
hfs_tool,
dmg_tool,
mkfshfs_tool,
attribution_sentinel,
)
def extract_dmg_contents(
dmgfile: Path,
destdir: Path,
dmg_tool: Path = None,
hfs_tool: Path = None,
):
if is_linux:
with mozfile.TemporaryDirectory() as tmpdir:
hfs_file = os.path.join(tmpdir, "firefox.hfs")
subprocess.check_call(
[dmg_tool, "extract", dmgfile, hfs_file],
# dmg is seriously chatty
stdout=subprocess.DEVNULL,
)
subprocess.check_call([hfs_tool, hfs_file, "extractall", "/", destdir])
else:
# TODO: find better way to resolve topsrcdir (checkout directory)
topsrcdir = Path(__file__).parent.parent.parent.parent.resolve()
unpack_diskimage = topsrcdir / "build/package/mac_osx/unpack-diskimage"
unpack_mountpoint = Path("/tmp/app-unpack")
subprocess.check_call([unpack_diskimage, dmgfile, unpack_mountpoint, destdir])
def extract_dmg(
dmgfile: Path,
output: Path,
dmg_tool: Path = None,
hfs_tool: Path = None,
dsstore: Path = None,
icon: Path = None,
background: Path = None,
):
if platform.system() not in ("Darwin", "Linux"):
raise Exception("Don't know how to extract a DMG on '%s'" % platform.system())
with mozfile.TemporaryDirectory() as tmp:
tmpdir = Path(tmp)
extract_dmg_contents(dmgfile, tmpdir, dmg_tool, hfs_tool)
applications_symlink = tmpdir / " "
if applications_symlink.is_symlink():
# Rsync will fail on the presence of this symlink
applications_symlink.unlink()
rsync(tmpdir, output)
if dsstore:
dsstore.parent.mkdir(parents=True, exist_ok=True)
rsync(tmpdir / ".DS_Store", dsstore)
if background:
background.parent.mkdir(parents=True, exist_ok=True)
rsync(tmpdir / ".background" / background.name, background)
if icon:
icon.parent.mkdir(parents=True, exist_ok=True)
rsync(tmpdir / ".VolumeIcon.icns", icon)
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