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Help with script to mount volumes

  • June 26, 2015
  • 3 replies
  • 5 views
C
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Hello everyone, I noticed there are already several open/closed discussions regarding network volume mounting with JSS
I tried the script included in the Resource Kit but I don't like the idea of having a launch agent left on the client side, so I tried to put together something myself
Environment is an AD domain with network users
The very rough script below grabs the full path from JSS parameters, so that you can add several shares within a single policy
It works when executed locally (hard coding the path) but has issues with a login policy because it runs as the root user (predictable), not the logged one
The result is network shares are correctly being mounted but they're not accessible (locked), likely because the mountpoint has wrong permissions
I tried gathering the network user at login with
loggedInUser=/bin/ls -l /dev/console | /usr/bin/awk '{ print $3 }'

But could not make it work within the script
Any help from the scritpting gurus out there will be highly appreciated...
Thank you all
Carlo

#!/bin/bash
# Automatic volume mounting with a valid kerberos ticket 
# Network shares parameters are passed by Casper
# Variables being used are $4 to $11

##Cycling with variables passed by JSS for each volume to be mounted
for var in "$4" "$5" "$6" "$7" "$8" "$9" "$10" "$11"
    do
        if [ "$var" != "" ]; #check if Casper parameter is empty
            then
                #Gather path to the network shares
                SHARE=${var:18}                       #Get network share
                SHARE=${SHARE%/}                      #Delete forward slash
                HOST=${var:6:11}                      #get host name
                MOUNT=${var:6}                        #Share to be mounted
                PROTOCOL=${var:0:3}               #Protocol being used (afp or smb from full path declared in JSS)
                VOL="/Volumes/$SHARE"                   #mountpoint from the share

                ping -t 1 -c 1 $HOST > /dev/null  
                    if [[ $? -eq 0 ]]   #check if host is reachable with ping
                        then
                            if [ "$PROTOCOL" == "afp" ]; #check protocol being used
                                then
                                mkdir $VOL    #create mountpoint for afp
                                mount_afp –i "afp://;AUTH=Client%20Krb%20v2@$MOUNT" $VOL #Mount Volume afp
                            else
                                mkdir $VOL    #create mountpoint for smb
                                mount -t smbfs "smb://$MOUNT" $VOL #Mount Volume smb
                            fi
                    fi
        fi
    done

    3 replies

    bentoms
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    • bentoms
    • Hall of Fame
    • June 26, 2015

    @carlo.anselmi I have blogged my script here.

    davidacland
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    • davidacland
    • Valued Contributor
    • June 26, 2015

    Hi @carlo.anselmi

    For the username part of the script, I use this:

    loggedInUser="$3"
    if [ -z "$username" ]; then       # Checks if the variable is empty (user running script from Self Service)
        loggedInUser=`/bin/ls -l /dev/console | /usr/bin/awk '{ print $3 }'`
    fi

    This can then be used as a login script ($3), and if it is being triggered another way, it will check if the variable is empty and if it is, use "/bin/ls -l /dev/console | /usr/bin/awk '{ print $3 }'"

    For the actual drive mounting, I have moved away from the mount_afp and mount commands. For years I had trouble with the creation of the mount point, sometimes it would work, sometimes it would get left behind and then fail next time it tries to run, sometimes its owned by a different user so the next user can't mount the share, etc.

    Instead I use an osascript command:

    # Mount the drive
    mount_script=`/usr/bin/osascript > /dev/null << EOT
    tell application "Finder" 
    activate
    mount volume "$PROTOCOL://${HOST}/${SHARE}"
    end tell
EOT`

    Hope this helps in your script.

    BTW, the whitespace and alignment of the osascript command has to be as it appears above, otherwise it doesn't work (just in case).

    C
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    • carlo_anselmi
    • Author
    • Valued Contributor
    • June 29, 2015

    Hi @bentoms + @davidacland,
    many thanks for your suggestions, I'll try perfecting my script with them
    Have a great week
    Carlo

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