Add a gpg key

src/freedombone-controlpanel-user

@@ -336,11 +336,11 @@ function block_unblock_subject {
     if [[ $BLOCK == "y"* || $BLOCK == "Y"* ]]; then
         ${PROJECT_NAME}-ignore -u $USER -t "$BLOCK_SUBJECT"
         dialog --title $"Block an email" \
-               --msgbox "Email with subject $BLOCK_SUBJECT is now blocked" 6 40
+               --msgbox $"Email with subject $BLOCK_SUBJECT is now blocked" 6 40
     else
         ${PROJECT_NAME}-unignore -u $USER -t "$BLOCK_SUBJECT"
         dialog --title $"Unblock an email" \
-               --msgbox "Email with subject $BLOCK_SUBJECT is now unblocked" 6 40
+               --msgbox $"Email with subject $BLOCK_SUBJECT is now unblocked" 6 40
     fi
 }
 
@@ -351,10 +351,32 @@ function show_gpg_key {
     GPG_DATE=$(gpg --fingerprint $MY_EMAIL_ADDRESS | grep -i "pub" | head -n 1 | awk -F '/' '{print $2}' | awk -F ' ' '{print $2}')
     dialog --title $"Your PGP/GPG Key" \
            --backtitle $"Freedombone User Control Panel" \
-           --msgbox "Email Address: $MY_EMAIL_ADDRESS\n\nKey ID: $GPG_ID\n\nFingerprint: $GPG_FINGERPRINT\n\nCreated: $GPG_DATE" 12 70
+           --msgbox $"Email Address: $MY_EMAIL_ADDRESS\n\nKey ID: $GPG_ID\n\nFingerprint: $GPG_FINGERPRINT\n\nCreated: $GPG_DATE" 12 70
 }
 
 function add_gpg_key {
+    data=$(tempfile 2>/dev/null)
+    trap "rm -f $data" 0 1 2 5 15
+    dialog --title $"Add someone's PGP/GPG key" \
+           --backtitle $"Freedombone User Control Panel" \
+           --inputbox $"Enter their email address below" 8 60 2>$data
+    sel=$?
+    case $sel in
+        0)
+            ADD_EMAIL_ADDRESS=$(<$data)
+            if [ ${#ADD_EMAIL_ADDRESS} -gt 1 ]; then
+                if [[ $ADD_EMAIL_ADDRESS == *"@"* && $ADD_EMAIL_ADDRESS == *"."* ]]; then
+                    clear
+                    gpg --search-keys $ADD_EMAIL_ADDRESS
+                else
+                    dialog --title $"Unrecognised email address" \
+                           --backtitle $"Freedombone User Control Panel" \
+                           --msgbox $"This doesn't look like an email address" 6 50
+                fi
+            fi
+            ;;
+    esac
+
 }
 
 function remove_gpg_key {