126 lines
4.0 KiB
Bash
Executable File
126 lines
4.0 KiB
Bash
Executable File
#!/bin/bash -e
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#
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# copy_crashplan_id shell scripts to copy the connection key from a remote
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# (e.g. headless) Crashplan instance and setup the local
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# machine's Crashplan client to connect to it using port
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# forwarding over an open SSH connection. See also https://support.code42.com/CrashPlan/4/Configuring/Using_CrashPlan_On_A_Headless_Computer
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#
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# Version 1.0, latest version at: https://gitlab.lindenaar.net/scripts/crashplan
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#
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# Copyright (c) 2016 Frederik Lindenaar
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#
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# This script is free software: you can redistribute and/or modify it under the
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# terms of version 3 of the GNU General Public License as published by the Free
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# Software Foundation, or (at your option) any later version of the license.
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#
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# This script is distributed in the hope that it will be useful but WITHOUT ANY
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# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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# A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License along with
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# this program. If not, visit <http://www.gnu.org/licenses/> to download it.
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### Configuration ###
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HOST= # name of machine runnig crashplan
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USER= # userid to use to login to machine
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# Leave blank for current user
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SRC_SYSTEM=Linux # either Linux, Darwin, osx or detect
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# Autodetects if blank (ssh conn, slow!)
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### Implementation ###
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# default settings, no need to change
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PORT=4244
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ADDR=127.0.0.1
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# Support function to send an error message to STDERR and exit with status 1
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die() { echo "Error: $*" >&2; exit 1; }
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# Support function to determine destination location of .ui_info
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# parameters: $1 - name of file (for error msg) $2 os (output of `uname -s`)
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# based on https://support.code42.com/CrashPlan/4/Configuring/Using_CrashPlan_On_A_Headless_Computer#Locations_Of_.ui_info
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file_location() {
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case $2 in
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OSX|osx|[Dd]arwin)
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if [ -d "~/Library/Application Support/CrashPlan" ]; then
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echo "~/Library/Application Support/CrashPlan/.ui_info"
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else
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echo "/Library/Application Support/CrashPlan/.ui_info"
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fi
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;;
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[Ll]inux)
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echo "/var/lib/crashplan/.ui_info"
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;;
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*) die "$1 os $2 is not supported"
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esac
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}
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# determine the connection parameters based on command line and configuration
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if [ $# -gt 2 -o $# -eq 0 -a -z "$HOST" ]; then
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echo "usage: $0 [user@]hostname [linux|osx|detect]"
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if [ -n "$HOST" ]; then
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echo " or just $0 to copy from $HOST"
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fi
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exit 2
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elif [ $# -gt 0 ]; then
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conn=$1
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HOST=`echo $conn | cut -d\@ -f 2 -`
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SRC_SYSTEM=${2:-$SRC_SYSTEM}
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else
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conn=${USER:+$USER@}$HOST
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fi
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# ensure the host is reachable
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if ping -o $HOST > /dev/null 2>&1; then
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echo "copying Crashplan connect key from $HOST"
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else
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die "unable to reach host $HOST"
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fi
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# check if sudo is needed and available, prompt for password now if required
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if [ -w "$dst" ]; then
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sudo=
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else
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sudo=`which sudo || true`
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if [ -z "$sudo" ]; then
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die "no write access to $dst and sudo not available"
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fi
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$sudo -p "Need root access to update $dst
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Please enter your password for sudo: " -v
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fi
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# determine the src and dst files
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os=`uname -s`
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if [ -z "$SRC_SYSTEM" -o "$SRC_SYSTEM" == detect ]; then
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echo autodetecting OS type for $HOST
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SRC_SYSTEM=`ssh $conn uname -s`
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fi
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src=`file_location source "$SRC_SYSTEM"`
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dst=`file_location destination "$os"`
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# use script name to generate a temp file name, ensure the temp file is removed
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myname=`basename "$0" .sh`
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tmpfile=`mktemp -t "$myname"`
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trap 'rm -f "$tmpfile"' 0
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# retrieve the key from the host and generate the new .ui_info file
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if scp -q "$conn:$src" "$tmpfile"; then
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key=`cut -d, -f2 "$tmpfile"`
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echo "$PORT,$key,$ADDR" > "$tmpfile"
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else
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die "unable to copy $src from $HOST"
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fi
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# check if the file is different, and if so put it in place
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if $sudo cmp -s "$tmpfile" "$dst"; then
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echo "no update needed, $dst up to date"
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elif $sudo install -C -b -m 0644 "$tmpfile" "$dst"; then
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echo "$dst updated for $HOST"
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else
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die "$dst could not be updated"
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fi
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echo "Connect with: ssh -L $PORT:$ADDR:4243 $conn"
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