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create-dmg
executable file
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create-dmg
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#!/usr/bin/env bash
# Create a read-only disk image of the contents of a folder
# Bail out on any unhandled errors
set -e;
# Any command that exits with non-zero code will cause the pipeline to fail
set -o pipefail;
CDMG_VERSION='1.2.1'
# The full path to the "support/" directory this script is using
# (This will be set up by code later in the script.)
CDMG_SUPPORT_DIR=""
OS_FULL_VERSION="$(sw_vers | sed -n 2p | cut -d : -f 2 | tr -d '[:space:]' | cut -c1-)"
OS_MAJOR_VERSION="$(echo $OS_FULL_VERSION | cut -d . -f 1)"
OS_MINOR_VERSION="$(echo $OS_FULL_VERSION | cut -d . -f 2)"
WINX=10
WINY=60
WINW=500
WINH=350
ICON_SIZE=128
TEXT_SIZE=16
FORMAT="UDZO"
FILESYSTEM="HFS+"
ADD_FILE_SOURCES=()
ADD_FILE_TARGETS=()
IMAGEKEY=""
HDIUTIL_VERBOSITY=""
SANDBOX_SAFE=0
BLESS=0
SKIP_JENKINS=0
MAXIMUM_UNMOUNTING_ATTEMPTS=3
SIGNATURE=""
NOTARIZE=""
function pure_version() {
echo "$CDMG_VERSION"
}
function hdiutil_detach_retry() {
# Unmount
unmounting_attempts=0
until
echo "Unmounting disk image..."
(( unmounting_attempts++ ))
hdiutil detach "$1"
exit_code=$?
(( exit_code == 0 )) && break # nothing goes wrong
(( exit_code != 16 )) && exit $exit_code # exit with the original exit code
# The above statement returns 1 if test failed (exit_code == 16).
# It can make the code in the {do... done} block to be executed
do
(( unmounting_attempts == MAXIMUM_UNMOUNTING_ATTEMPTS )) && exit 16 # patience exhausted, exit with code EBUSY
echo "Wait a moment..."
sleep $(( 1 * (2 ** unmounting_attempts) ))
done
unset unmounting_attempts
}
function version() {
echo "create-dmg $(pure_version)"
}
function usage() {
version
cat <<EOHELP
Creates a fancy DMG file.
Usage: $(basename $0) [options] <output_name.dmg> <source_folder>
All contents of <source_folder> will be copied into the disk image.
Options:
--volname <name>
set volume name (displayed in the Finder sidebar and window title)
--volicon <icon.icns>
set volume icon
--background <pic.png>
set folder background image (provide png, gif, or jpg)
--window-pos <x> <y>
set position the folder window
--window-size <width> <height>
set size of the folder window
--text-size <text_size>
set window text size (10-16)
--icon-size <icon_size>
set window icons size (up to 128)
--icon file_name <x> <y>
set position of the file's icon
--hide-extension <file_name>
hide the extension of file
--app-drop-link <x> <y>
make a drop link to Applications, at location x,y
--ql-drop-link <x> <y>
make a drop link to user QuickLook install dir, at location x,y
--eula <eula_file>
attach a license file to the dmg (plain text or RTF)
--no-internet-enable
disable automatic mount & copy
--format <format>
specify the final disk image format (UDZO|UDBZ|ULFO|ULMO) (default is UDZO)
--filesystem <filesystem>
specify the disk image filesystem (HFS+|APFS) (default is HFS+, APFS supports macOS 10.13 or newer)
--encrypt
enable encryption for the resulting disk image (AES-256 - you will be prompted for password)
--encrypt-aes128
enable encryption for the resulting disk image (AES-128 - you will be prompted for password)
--add-file <target_name> <file>|<folder> <x> <y>
add additional file or folder (can be used multiple times)
--disk-image-size <x>
set the disk image size manually to x MB
--hdiutil-verbose
execute hdiutil in verbose mode
--hdiutil-quiet
execute hdiutil in quiet mode
--bless
bless the mount folder (deprecated, needs macOS 12.2.1 or older)
--codesign <signature>
codesign the disk image with the specified signature
--notarize <credentials>
notarize the disk image (waits and staples) with the keychain stored credentials
--sandbox-safe
execute hdiutil with sandbox compatibility and do not bless (not supported for APFS disk images)
--version
show create-dmg version number
-h, --help
display this help screen
EOHELP
exit 0
}
# factors can cause interstitial disk images to contain more than a single
# partition - expand the hunt for the temporary disk image by checking for
# the path of the volume, versus assuming its the first result (as in pr/152).
function find_mount_dir() {
local dev_name="${1}"
>&2 echo "Searching for mounted interstitial disk image using ${dev_name}... "
# enumerate up to 9 partitions
for i in {1..9}; do
# attempt to find the partition
local found_dir
found_dir=$(hdiutil info | grep -E --color=never "${dev_name}" | head -${i} | awk '{print $3}' | xargs)
if [[ -n "${found_dir}" ]]; then
echo "${found_dir}"
return 0
fi
done
}
# Argument parsing
while [[ "${1:0:1}" = "-" ]]; do
case $1 in
--volname)
VOLUME_NAME="$2"
shift; shift;;
--volicon)
VOLUME_ICON_FILE="$2"
shift; shift;;
--background)
BACKGROUND_FILE="$2"
BACKGROUND_FILE_NAME="$(basename "$BACKGROUND_FILE")"
BACKGROUND_CLAUSE="set background picture of opts to file \".background:$BACKGROUND_FILE_NAME\""
REPOSITION_HIDDEN_FILES_CLAUSE="set position of every item to {theBottomRightX + 100, 100}"
shift; shift;;
--icon-size)
ICON_SIZE="$2"
shift; shift;;
--text-size)
TEXT_SIZE="$2"
shift; shift;;
--window-pos)
WINX=$2; WINY=$3
shift; shift; shift;;
--window-size)
WINW=$2; WINH=$3
shift; shift; shift;;
--icon)
POSITION_CLAUSE="${POSITION_CLAUSE}set position of item \"$2\" to {$3, $4}
"
shift; shift; shift; shift;;
--hide-extension)
HIDING_CLAUSE="${HIDING_CLAUSE}set the extension hidden of item \"$2\" to true
"
shift; shift;;
-h | --help)
usage;;
--version)
version; exit 0;;
--pure-version)
pure_version; exit 0;;
--ql-drop-link)
QL_LINK=$2
QL_CLAUSE="set position of item \"QuickLook\" to {$2, $3}
"
shift; shift; shift;;
--app-drop-link)
APPLICATION_LINK=$2
APPLICATION_CLAUSE="set position of item \"Applications\" to {$2, $3}
"
shift; shift; shift;;
--eula)
EULA_RSRC=$2
shift; shift;;
--no-internet-enable)
NOINTERNET=1
shift;;
--format)
FORMAT="$2"
shift; shift;;
--filesystem)
FILESYSTEM="$2"
shift; shift;;
--encrypt)
ENABLE_ENCRYPTION=1
AESBITS=256
shift;;
--encrypt-aes128)
ENABLE_ENCRYPTION=1
AESBITS=128
shift;;
--add-file | --add-folder)
ADD_FILE_TARGETS+=("$2")
ADD_FILE_SOURCES+=("$3")
POSITION_CLAUSE="${POSITION_CLAUSE}
set position of item \"$2\" to {$4, $5}
"
shift; shift; shift; shift; shift;;
--disk-image-size)
DISK_IMAGE_SIZE="$2"
shift; shift;;
--hdiutil-verbose)
HDIUTIL_VERBOSITY='-verbose'
shift;;
--hdiutil-quiet)
HDIUTIL_VERBOSITY='-quiet'
shift;;
--codesign)
SIGNATURE="$2"
shift; shift;;
--notarize)
NOTARIZE="$2"
shift; shift;;
--sandbox-safe)
SANDBOX_SAFE=1
shift;;
--bless)
BLESS=1
shift;;
--rez)
echo "REZ is no more directly used. You can remove the --rez argument."
shift; shift;;
--skip-jenkins)
SKIP_JENKINS=1
shift;;
-*)
echo "Unknown option: $1. Run 'create-dmg --help' for help."
exit 1;;
esac
case $FORMAT in
UDZO)
IMAGEKEY="-imagekey zlib-level=9";;
UDBZ)
IMAGEKEY="-imagekey bzip2-level=9";;
ULFO)
;;
ULMO)
;;
*)
echo >&2 "Unknown disk image format: $FORMAT"
exit 1;;
esac
done
if [[ -z "$2" ]]; then
echo "Not enough arguments. Run 'create-dmg --help' for help."
exit 1
fi
DMG_PATH="$1"
SRC_FOLDER="$(cd "$2" > /dev/null; pwd)"
# Argument validation checks
if [[ "${DMG_PATH: -4}" != ".dmg" ]]; then
echo "Output file name must end with a .dmg extension. Run 'create-dmg --help' for help."
exit 1
fi
if [[ "${FILESYSTEM}" != "HFS+" ]] && [[ "${FILESYSTEM}" != "APFS" ]]; then
echo "Unknown disk image filesystem: ${FILESYSTEM}. Run 'create-dmg --help' for help."
exit 1
fi
if [[ "${FILESYSTEM}" == "APFS" ]] && [[ ${SANDBOX_SAFE} -eq 1 ]]; then
echo "Creating an APFS disk image that is sandbox safe is not supported."
exit 1
fi
# Main script logic
SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
DMG_DIRNAME="$(dirname "$DMG_PATH")"
DMG_DIR="$(cd "$DMG_DIRNAME" > /dev/null; pwd)"
DMG_NAME="$(basename "$DMG_PATH")"
DMG_TEMP_NAME="$DMG_DIR/rw.$$.${DMG_NAME}"
# Detect where we're running from
sentinel_file="$SCRIPT_DIR/.this-is-the-create-dmg-repo"
if [[ -f "$sentinel_file" ]]; then
# We're running from inside a repo
CDMG_SUPPORT_DIR="$SCRIPT_DIR/support"
else
# We're running inside an installed location
bin_dir="$SCRIPT_DIR"
prefix_dir=$(dirname "$bin_dir")
CDMG_SUPPORT_DIR="$prefix_dir/share/create-dmg/support"
fi
if [[ -z "$VOLUME_NAME" ]]; then
VOLUME_NAME="$(basename "$DMG_PATH" .dmg)"
fi
if [[ ! -d "$CDMG_SUPPORT_DIR" ]]; then
echo >&2 "Cannot find support/ directory: expected at: $CDMG_SUPPORT_DIR"
exit 1
fi
if [[ -f "$SRC_FOLDER/.DS_Store" ]]; then
echo "Deleting .DS_Store found in source folder"
rm "$SRC_FOLDER/.DS_Store"
fi
# Create the image
echo "Creating disk image..."
if [[ -f "${DMG_TEMP_NAME}" ]]; then
rm -f "${DMG_TEMP_NAME}"
fi
# Use Megabytes since hdiutil fails with very large byte numbers
function blocks_to_megabytes() {
# Add 1 extra MB, since there's no decimal retention here
MB_SIZE=$((($1 * 512 / 1000 / 1000) + 1))
echo $MB_SIZE
}
function get_size() {
# Get block size in disk
if [[ $OS_MAJOR_VERSION -ge 12 ]]; then
bytes_size=$(du -B 512 -s "$1")
else
bytes_size=$(du -s "$1")
fi
bytes_size=$(echo $bytes_size | sed -e 's/ .*//g')
echo $(blocks_to_megabytes $bytes_size)
}
# Create the DMG with the specified size or the hdiutil estimation
CUSTOM_SIZE=''
if [[ -n "$DISK_IMAGE_SIZE" ]]; then
CUSTOM_SIZE="-size ${DISK_IMAGE_SIZE}m"
fi
if [[ $SANDBOX_SAFE -eq 0 ]]; then
if [[ "$FILESYSTEM" == "APFS" ]]; then
FILESYSTEM_ARGUMENTS=""
else
FILESYSTEM_ARGUMENTS="-c c=64,a=16,e=16"
fi
hdiutil create ${HDIUTIL_VERBOSITY} -srcfolder "$SRC_FOLDER" -volname "${VOLUME_NAME}" \
-fs "${FILESYSTEM}" -fsargs "${FILESYSTEM_ARGUMENTS}" -format UDRW ${CUSTOM_SIZE} "${DMG_TEMP_NAME}"
else
hdiutil makehybrid ${HDIUTIL_VERBOSITY} -default-volume-name "${VOLUME_NAME}" -hfs -o "${DMG_TEMP_NAME}" "$SRC_FOLDER"
hdiutil convert -format UDRW -ov -o "${DMG_TEMP_NAME}" "${DMG_TEMP_NAME}"
DISK_IMAGE_SIZE_CUSTOM=$DISK_IMAGE_SIZE
fi
# Get the created DMG actual size
DISK_IMAGE_SIZE=$(get_size "${DMG_TEMP_NAME}")
# Use the custom size if bigger
if [[ $SANDBOX_SAFE -eq 1 ]] && [[ ! -z "$DISK_IMAGE_SIZE_CUSTOM" ]] && [[ $DISK_IMAGE_SIZE_CUSTOM -gt $DISK_IMAGE_SIZE ]]; then
DISK_IMAGE_SIZE=$DISK_IMAGE_SIZE_CUSTOM
fi
# Estimate the additional sources size
if [[ -n "$ADD_FILE_SOURCES" ]]; then
for i in "${!ADD_FILE_SOURCES[@]}"; do
SOURCE_SIZE=$(get_size "${ADD_FILE_SOURCES[$i]}")
DISK_IMAGE_SIZE=$(expr $DISK_IMAGE_SIZE + $SOURCE_SIZE)
done
fi
# Add extra space for additional resources
DISK_IMAGE_SIZE=$(expr $DISK_IMAGE_SIZE + 20)
# Make sure target image size is within limits
MIN_DISK_IMAGE_SIZE=$(hdiutil resize -limits "${DMG_TEMP_NAME}" | awk 'NR=1{print int($1/2048+1)}')
if [ $MIN_DISK_IMAGE_SIZE -gt $DISK_IMAGE_SIZE ]; then
DISK_IMAGE_SIZE=$MIN_DISK_IMAGE_SIZE
fi
# Resize the image for the extra stuff
hdiutil resize ${HDIUTIL_VERBOSITY} -size ${DISK_IMAGE_SIZE}m "${DMG_TEMP_NAME}"
# Mount the new DMG
echo "Mounting disk image..."
MOUNT_RANDOM_PATH="/Volumes"
if [[ $SANDBOX_SAFE -eq 1 ]]; then
MOUNT_RANDOM_PATH="/tmp"
fi
if [[ "$FILESYSTEM" == "APFS" ]]; then
HDIUTIL_FILTER="tail -n 1"
else
HDIUTIL_FILTER="sed 1q"
fi
DEV_NAME=$(hdiutil attach -mountrandom ${MOUNT_RANDOM_PATH} -readwrite -noverify -noautoopen -nobrowse "${DMG_TEMP_NAME}" | grep -E --color=never '^/dev/' | ${HDIUTIL_FILTER} | awk '{print $1}')
echo "Device name: $DEV_NAME"
if [[ "$FILESYSTEM" == "APFS" ]]; then
MOUNT_DIR=$(find_mount_dir "${DEV_NAME}")
else
MOUNT_DIR=$(find_mount_dir "${DEV_NAME}s")
fi
if [[ -z "${MOUNT_DIR}" ]]; then
>&2 echo "ERROR: unable to proceed with final disk image creation because the interstitial disk image was not found."
>&2 echo "The interstitial disk image will likely be mounted and will need to be cleaned up manually."
exit 1
fi
echo "Mount dir: $MOUNT_DIR"
if [[ -n "$BACKGROUND_FILE" ]]; then
echo "Copying background file '$BACKGROUND_FILE'..."
[[ -d "$MOUNT_DIR/.background" ]] || mkdir "$MOUNT_DIR/.background"
cp "$BACKGROUND_FILE" "$MOUNT_DIR/.background/$BACKGROUND_FILE_NAME"
fi
if [[ -n "$APPLICATION_LINK" ]]; then
echo "Making link to Applications dir..."
echo $MOUNT_DIR
ln -s /Applications "$MOUNT_DIR/Applications"
fi
if [[ -n "$QL_LINK" ]]; then
echo "Making link to QuickLook install dir..."
echo $MOUNT_DIR
ln -s "/Library/QuickLook" "$MOUNT_DIR/QuickLook"
fi
if [[ -n "$VOLUME_ICON_FILE" ]]; then
echo "Copying volume icon file '$VOLUME_ICON_FILE'..."
cp "$VOLUME_ICON_FILE" "$MOUNT_DIR/.VolumeIcon.icns"
SetFile -c icnC "$MOUNT_DIR/.VolumeIcon.icns"
fi
if [[ -n "$ADD_FILE_SOURCES" ]]; then
echo "Copying custom files..."
for i in "${!ADD_FILE_SOURCES[@]}"; do
echo "${ADD_FILE_SOURCES[$i]}"
cp -a "${ADD_FILE_SOURCES[$i]}" "$MOUNT_DIR/${ADD_FILE_TARGETS[$i]}"
done
fi
VOLUME_NAME=$(basename $MOUNT_DIR)
# Run AppleScript to do all the Finder cosmetic stuff
APPLESCRIPT_FILE=$(mktemp -t createdmg.tmp.XXXXXXXXXX)
if [[ $SANDBOX_SAFE -eq 1 ]]; then
echo "Skipping Finder-prettifying AppleScript because we are in Sandbox..."
else
if [[ $SKIP_JENKINS -eq 0 ]]; then
cat "$CDMG_SUPPORT_DIR/template.applescript" \
| sed -e "s/WINX/$WINX/g" -e "s/WINY/$WINY/g" -e "s/WINW/$WINW/g" \
-e "s/WINH/$WINH/g" -e "s/BACKGROUND_CLAUSE/$BACKGROUND_CLAUSE/g" \
-e "s/REPOSITION_HIDDEN_FILES_CLAUSE/$REPOSITION_HIDDEN_FILES_CLAUSE/g" \
-e "s/ICON_SIZE/$ICON_SIZE/g" -e "s/TEXT_SIZE/$TEXT_SIZE/g" \
| perl -pe "s/POSITION_CLAUSE/$POSITION_CLAUSE/g" \
| perl -pe "s/QL_CLAUSE/$QL_CLAUSE/g" \
| perl -pe "s/APPLICATION_CLAUSE/$APPLICATION_CLAUSE/g" \
| perl -pe "s/HIDING_CLAUSE/$HIDING_CLAUSE/" \
> "$APPLESCRIPT_FILE"
sleep 2 # pause to workaround occasional "Can’t get disk" (-1728) issues
echo "Running AppleScript to make Finder stuff pretty: /usr/bin/osascript \"${APPLESCRIPT_FILE}\" \"${VOLUME_NAME}\""
if /usr/bin/osascript "${APPLESCRIPT_FILE}" "${VOLUME_NAME}"; then
# Okay, we're cool
true
else
echo >&2 "Failed running AppleScript"
hdiutil_detach_retry "${DEV_NAME}"
exit 64
fi
echo "Done running the AppleScript..."
sleep 4
rm "$APPLESCRIPT_FILE"
fi
fi
# Make sure it's not world writeable
echo "Fixing permissions..."
chmod -Rf go-w "${MOUNT_DIR}" &> /dev/null || true
echo "Done fixing permissions"
# Make the top window open itself on mount:
if [[ $BLESS -eq 1 && $SANDBOX_SAFE -eq 0 ]]; then
echo "Blessing started"
if [ $(uname -m) == "arm64" ]; then
bless --folder "${MOUNT_DIR}"
else
bless --folder "${MOUNT_DIR}" --openfolder "${MOUNT_DIR}"
fi
echo "Blessing finished"
else
echo "Skipping blessing on sandbox"
fi
if [[ -n "$VOLUME_ICON_FILE" ]]; then
# Tell the volume that it has a special file attribute
SetFile -a C "$MOUNT_DIR"
fi
# Delete unnecessary file system events log if possible
echo "Deleting .fseventsd"
rm -rf "${MOUNT_DIR}/.fseventsd" || true
hdiutil_detach_retry "${DEV_NAME}"
# Compress image and optionally encrypt
if [[ $ENABLE_ENCRYPTION -eq 0 ]]; then
echo "Compressing disk image..."
hdiutil convert ${HDIUTIL_VERBOSITY} "${DMG_TEMP_NAME}" -format ${FORMAT} ${IMAGEKEY} -o "${DMG_DIR}/${DMG_NAME}"
else
echo "Compressing and encrypting disk image..."
echo "NOTE: hdiutil will only prompt a single time for a password - ensure entry is correct."
hdiutil convert ${HDIUTIL_VERBOSITY} "${DMG_TEMP_NAME}" -format ${FORMAT} ${IMAGEKEY} -encryption AES-${AESBITS} -stdinpass -o "${DMG_DIR}/${DMG_NAME}"
fi
rm -f "${DMG_TEMP_NAME}"
# Adding EULA resources
if [[ -n "${EULA_RSRC}" && "${EULA_RSRC}" != "-null-" ]]; then
echo "Adding EULA resources..."
#
# Use udifrez instead flatten/rez/unflatten
# https://github.com/create-dmg/create-dmg/issues/109
#
# Based on a thread from dawn2dusk & peterguy
# https://developer.apple.com/forums/thread/668084
#
EULA_RESOURCES_FILE=$(mktemp -t createdmg.tmp.XXXXXXXXXX)
EULA_FORMAT=$(file -b ${EULA_RSRC})
if [[ ${EULA_FORMAT} == 'Rich Text Format data'* ]] ; then
EULA_FORMAT='RTF '
else
EULA_FORMAT='TEXT'
fi
# Encode the EULA to base64
# Replace 'openssl base64' with 'base64' if Mac OS X 10.6 support is no more needed
# EULA_DATA="$(base64 -b 52 "${EULA_RSRC}" | sed s$'/^\(.*\)$/\t\t\t\\1/')"
EULA_DATA="$(openssl base64 -in "${EULA_RSRC}" | tr -d '\n' | awk '{gsub(/.{52}/,"&\n")}1' | sed s$'/^\(.*\)$/\t\t\t\\1/')"
# Fill the template with the custom EULA contents
eval "cat > \"${EULA_RESOURCES_FILE}\" <<EOF
$(<${CDMG_SUPPORT_DIR}/eula-resources-template.xml)
EOF
"
# Apply the resources
hdiutil udifrez -xml "${EULA_RESOURCES_FILE}" '' -quiet "${DMG_DIR}/${DMG_NAME}" || {
echo "Failed to add the EULA license"
exit 1
}
echo "Successfully added the EULA license"
fi
# Enable "internet", whatever that is
if [[ ! -z "${NOINTERNET}" && "${NOINTERNET}" == 1 ]]; then
echo "Not setting 'internet-enable' on the dmg, per caller request"
else
# Check if hdiutil supports internet-enable
# Support was removed in macOS 10.15. See https://github.com/andreyvit/create-dmg/issues/76
if hdiutil internet-enable -help >/dev/null 2>/dev/null; then
hdiutil internet-enable -yes "${DMG_DIR}/${DMG_NAME}"
else
echo "hdiutil does not support internet-enable. Note it was removed in macOS 10.15."
fi
fi
if [[ -n "${SIGNATURE}" && "${SIGNATURE}" != "-null-" ]]; then
echo "Codesign started"
codesign -s "${SIGNATURE}" "${DMG_DIR}/${DMG_NAME}"
dmgsignaturecheck="$(codesign --verify --deep --verbose=2 --strict "${DMG_DIR}/${DMG_NAME}" 2>&1 >/dev/null)"
if [ $? -eq 0 ]; then
echo "The disk image is now codesigned"
else
echo "The signature seems invalid${NC}"
exit 1
fi
fi
if [[ -n "${NOTARIZE}" && "${NOTARIZE}" != "-null-" ]]; then
echo "Notarization started"
xcrun notarytool submit "${DMG_DIR}/${DMG_NAME}" --keychain-profile "${NOTARIZE}" --wait
echo "Stapling the notarization ticket"
staple="$(xcrun stapler staple "${DMG_DIR}/${DMG_NAME}")"
if [ $? -eq 0 ]; then
echo "The disk image is now notarized"
else
echo "$staple"
echo "The notarization failed with error $?"
exit 1
fi
fi
# All done!
echo "Disk image done"
exit 0