Tag Archives: Thunderbird

Check for new versions of Firefox, Thunderbird

#!/bin/bash 
 
function checkVersion() { 
        V1=$(echo $1 | tr -d [:alpha:])
        V2=$(echo $2 | tr -d [:alpha:])
        MAJ1=$(echo $V1 | cut -d. -f1) 
        MIN1=$(echo $V1 | cut -d. -f2) 
        REV1=$(echo $V1 | cut -d. -f3) 
 
        MAJ2=$(echo $V2 | cut -d. -f1) 
        MIN2=$(echo $V2 | cut -d. -f2) 
        REV2=$(echo $V2 | cut -d. -f3) 
 
        if [[ $MAJ1 -lt $MAJ2 ]] ; then 
                return 1; 
        fi 
 
        if [[ $MAJ1 -eq $MAJ2 ]] ; then 
                if [[ -n "$MIN2" ]] ; then 
                        if [[ -n "$MIN1" ]] ; then 
                                if [[ $MIN1 -lt $MIN2 ]] ; then 
                                        return 1; 
                                fi 
 
                                if [[ $MIN1 -eq $MIN2 ]] ; then 
                                        if [[ -n "$REV2" ]] ; then 
                                                if [[ -n "$REV1" ]] ; then 
                                                        if [[ $REV1 -lt $REV2 ]] ; then 
                                                                return 1; 
                                                        fi 
                                                else 
                                                        return 1; 
                                                fi 
                                        fi 
                                fi 
                        else 
                                return 1; 
                        fi 
                fi 
        fi 
 
        return 0; 
} 
 
# Check Thunderbird 
TB=$(curl -s https://ftp.mozilla.org/pub/thunderbird/releases/ | sed -n "s/^\s\+<td><a href=\".*\">\(.*\)\/<\/a><\/td>$/\1/gp" | sort -g | egrep -iv "b|esr" | tail -n 1 ) 
TBL=$(thunderbird -v | sed -n "s/^\s*Thunderbird\s*\(.*\)$/\1/gp") 
 
checkVersion $TBL $TB 
if [[ $? -eq 1 ]] ; then 
        echo "Update Thunderbird ($TBL -> $TB)" 
fi 
 
# Check Firefox 
TB=$(curl -s https://ftp.mozilla.org/pub/firefox/releases/ | sed -n "s/^\s\+<td><a href=\".*\">\(.*\)\/<\/a><\/td>$/\1/gp" | sort -g | egrep -iv "b|esr" | tail -n 1 ) 
TBL=$(firefox -v | sed -n "s/^.*Firefox\s*\(.*\)$/\1/gp") 
 
checkVersion $TBL $TB 
if [[ $? -eq 1 ]] ; then 
        echo "Update Firefox ($TBL -> $TB)" 
fi

Settings in about:config for built-in update check:

  • app.update.interval
  • app.update.url
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Pinentry not working over SSH with x11forwarding (Thunderbird with Enigmail)

If you use Enigmail in Thunderbird over a SSH connection, sometimes you cannot input the passphrase for your private GPG key. pinentry-qt / pinentry-gnome3 / pinentry-gtk2 are not showing any dialog boxes.

Here is a workaround: You can cache the passphrase with gpg-agent, even if Thunderbird is already running. Enigmail will then use the cached passphrase from gpg-agent, because it runs gpg2 commands in a subshell in order to encrypt or sign messages.

Connect to the server using x11forwarding:

$ ssh -Y server

Note your DISPLAY environment variable:

$ echo $DISPLAY
localhost:10.0

Unset / delete the DISPLAY environment variable:

unset DISPLAY

Export GPG_TTY environment variable for gpg:

export GPG_TTY=$(tty)

Make sure that gpg-agent is running:

$ ps aux | grep gpg-agent
user 2058 0.0 0.0 168068 2228 ? Ss Nov10 0:07 gpg-agent --homedir /home/user/.gnupg --use-standard-socket --daemon

Insert the passphrase for your GPG key in gpg-agent by signing a dummy message. Make sure that you enter your passphrase in the pinentry tui not the gpg command prompt.

$ echo test | gpg2 --use-agent -s

The passphrase you are about to enter should be cached by gpg-agent. The cache lifetime is controlled by settings in ~/.gnupg/gpg-agent.conf . Now set the DISPLAY environment variable again to run Thunderbird. Use the value from previous command.

export DISPLAY=localhost:10.0

Start Thunderbird. You should now be able to sign and encrypt email messages with Enigmail without having to enter your gpg passphrase again because it is already cached by gpg-agent.

thunderbird &

 

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