#!/bin/bash
#
# .---.                  .              .
# |                      |              |
# |--- .--. .-.  .-.  .-.|  .-. .--.--. |.-.  .-. .--.  .-.
# |    |   (.-' (.-' (   | (   )|  |  | |   )(   )|  | (.-'
# '    '     --'  --'  -' -  -' '  '   -' -'   -' '   -  --'
#
#                    Freedom in the Cloud
#
# User control panel
#
# License
# =======
#
# Copyright (C) 2016 Bob Mottram <bob@freedombone.net>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

PROJECT_NAME='freedombone'

export TEXTDOMAIN=${PROJECT_NAME}-controlpanel-user
export TEXTDOMAINDIR="/usr/share/locale"

MY_EMAIL_ADDRESS=$USER@$HOSTNAME
GPG_ID=$(gpg --fingerprint $MY_EMAIL_ADDRESS | grep -i "pub" | head -n 1 | awk -F '/' '{print $2}' | awk -F ' ' '{print $1}')
GPG_BACKUP_ID=$(gpg --fingerprint "(backup key)" | grep -i "pub" | head -n 1 | awk -F '/' '{print $2}' | awk -F ' ' '{print $1}')

UTILS_FILES=/usr/share/${PROJECT_NAME}/utils/${PROJECT_NAME}-utils-*
for f in $UTILS_FILES
do
  source $f
done

APP_FILES=/usr/share/${PROJECT_NAME}/apps/${PROJECT_NAME}-app-*
for f in $APP_FILES
do
  source $f
done

function any_key {
    echo ' '
    read -n1 -r -p $"Press any key to continue..." key
}

function remove_user_from_mailing_list {
    USER_MAILING_LISTS=$(cat "/home/$USER/.procmailrc" | grep '\[' | grep '\]' | awk -F '\[' '{print $2}' | awk -F '\\' '{print $1}')

    i=0
    W=()
    list_name=()
    while read -r listname; do
        i=$((i+1))
        W+=($i "$listname")
        list_name+=("$listname")
        echo $listname
    done <<< "$USER_MAILING_LISTS"

    i=$((i+1))
    W+=($i $"Exit back to user mainenance")

    list_selected=$(dialog --default-item "$i" --backtitle $"Freedombone User Control Panel" --title $"Remove yourself from a mailing list" --menu $"Select one of the following:" 24 50 17 "${W[@]}" 3>&2 2>&1 1>&3)

    if [ $? -eq 0 ]; then # Exit with OK
        if [ ${list_selected} -ne ${i} ]; then
            remove_list_name="${list_name[$((list_selected-1))]}"

            # find the line number where the list is defined
            line_number=0
            i=0
            while read -r line
            do
                if [[ "$line" == *"\[${remove_list_name}\\]"* ]]; then
                    line_number=${i}
                fi
                i=$((i+1))
            done < "/home/$USER/.procmailrc"

            if [ ${line_number} -eq 0 ]; then
                # no match was found
                return
            fi

            # recreate the file
            if [ -f /home/${USER}/.procmailrc_new ]; then
                rm /home/${USER}/.procmailrc_new
            fi
            i=0
            clip=0
            while read -r line
            do
                i=$((i+1))
                if [ ${i} -gt $((line_number-1)) ]; then
                    if [ ${clip} -eq 0 ]; then
                        clip=1
                    fi
                    if [ ${clip} -eq 1 ]; then
                        if [ ${i} -lt $((line_number+2)) ]; then
                            continue
                        else
                            if [ ${#line} -lt 1 ]; then
                                clip=2
                                continue
                            fi
                            if [[ "$line" == ":"* || "$line" == "#"* ]]; then
                                clip=2
                            else
                                continue
                            fi
                        fi
                    fi
                fi

                echo "$line" >> /home/${USER}/.procmailrc_new

                if [[ "$line" == *"\[${remove_list_name}\\]"* ]]; then
                    line_number=${i}
                fi
            done < "/home/$USER/.procmailrc"
            cp /home/${USER}/.procmailrc_new /home/${USER}/.procmailrc
            rm /home/${USER}/.procmailrc_new
            chown ${USER}:${USER} /home/${USER}/.procmailrc
            dialog --title $"Remove yourself from mailing list" \
                   --msgbox $"You have been removed from ${remove_list_name}" 6 50
        fi
    fi
}

function add_to_mailing_list {
    data=$(tempfile 2>/dev/null)
    trap "rm -f $data" 0 1 2 5 15
    dialog --backtitle $"Freedombone User Control Panel" \
           --title $"Subscribe to a mailing list" \
           --form $"You can either enter a subject or an email address\n" 11 68 4 \
           $"List folder name:" 1 1 "" 1 35 26 25 \
           $"Name between [] on subject line:" 2 1 "" 2 35 26 25 \
           $"List email address:" 3 1 "" 3 35 26 25 \
           $"Public:" 4 1 $"yes" 4 35 4 25 \
           2> $data
    sel=$?
    case $sel in
        1) return;;
        255) return;;
    esac
    LIST_NAME=$(cat $data | sed -n 1p)
    LIST_SUBJECT=$(cat $data | sed -n 2p)
    LIST_EMAIL=$(cat $data | sed -n 3p)
    LIST_PUBLIC=$(cat $data | sed -n 4p)

    if [ ${#LIST_PUBLIC} -lt 1 ]; then
        LIST_PUBLIC='no'
    fi
    if [[ $LIST_PUBLIC == $'y' || $LIST_PUBLIC == $'Y' || $LIST_PUBLIC == $'true' || $LIST_PUBLIC == $'True' || $LIST_PUBLIC == $'yes' || $LIST_PUBLIC == $'Yes' || $LIST_PUBLIC == $'YES' ]]; then
        LIST_PUBLIC='yes'
    else
        LIST_PUBLIC='no'
    fi
    if [ ${#LIST_NAME} -lt 2 ]; then
        dialog --title $"Add mailing list" \
               --msgbox $"No mailing list name was given" 6 40
        return
    fi
    if [ ${#LIST_SUBJECT} -lt 2 ]; then
        if [ ${#LIST_EMAIL} -lt 2 ]; then
            dialog --title $"Add mailing list" \
                   --msgbox $"No mailing list subject or address was given" 6 40
            return
        fi
    fi
    if [ ${#LIST_SUBJECT} -gt 1 ]; then
        ${PROJECT_NAME}-addlist -u $USER -l "$LIST_NAME" \
                       -s "$LIST_SUBJECT" --public $LIST_PUBLIC
    else
        if [[ "$LIST_EMAIL" != *"@"* || "$LIST_EMAIL" != *"."* ]]; then
            dialog --title $"Add mailing list" \
                   --msgbox $"Unrecognised email address" 6 40
            return
        else
            ${PROJECT_NAME}-addlist -u $USER -l "$LIST_NAME" \
                           -e "$LIST_EMAIL" --public $LIST_PUBLIC
        fi
    fi

    dialog --title $"Add mailing list" \
           --msgbox $"$LIST_NAME list was added" 6 40
}

function email_rule_address {
    data=$(tempfile 2>/dev/null)
    trap "rm -f $data" 0 1 2 5 15
    dialog --backtitle $"Freedombone User Control Panel" \
           --title $"Create an email rule" \
           --form "\n" 9 65 4 \
           $"When email arrives from address:" 1 1 "" 1 35 24 28 \
           $"Move to folder:" 2 1 "" 2 35 24 28 \
           $"Public:" 3 1 $"no" 3 35 4 25 \
           2> $data
    sel=$?
    case $sel in
        1) return;;
        255) return;;
    esac
    RULE_EMAIL=$(cat $data | sed -n 1p)
    RULE_FOLDER=$(cat $data | sed -n 2p)
    RULE_PUBLIC=$(cat $data | sed -n 3p)

    if [ ${#RULE_PUBLIC} -lt 1 ]; then
        RULE_PUBLIC='no'
    fi
    if [[ $RULE_PUBLIC == $'y' || $RULE_PUBLIC == $'Y' || $RULE_PUBLIC == $'true' || $RULE_PUBLIC == $'True' || $RULE_PUBLIC == $'yes' || $RULE_PUBLIC == $'Yes' || $RULE_PUBLIC == $'YES' ]]; then
        RULE_PUBLIC='yes'
    else
        RULE_PUBLIC='no'
    fi
    if [ ${#RULE_EMAIL} -lt 2 ]; then
        dialog --title $"Create an email rule" \
               --msgbox $"No email address was given" 6 40
        return
    fi
    if [ ${#RULE_FOLDER} -lt 2 ]; then
        dialog --title $"Create an email rule" \
               --msgbox $"No folder name was given" 6 40
        return
    fi
    if [[ "$RULE_EMAIL" != *"@"* || "$RULE_EMAIL" != *"."* ]]; then
        dialog --title $"Create an email rule" \
               --msgbox $"Unrecognised email address" 6 40
        return
    fi

    ${PROJECT_NAME}-addemail -u $USER -e "$RULE_EMAIL" \
                   -g "$RULE_FOLDER" --public $RULE_PUBLIC
    dialog --title $"Create an email rule" \
           --msgbox $"Email rule for $RULE_EMAIL was added" 6 40
}

function gpg_set_trust {
    TRUST_ADDRESS=$1
    fpr=$(gpg --with-colons --fingerprint "$TRUST_ADDRESS" | grep fpr | head -n 1 | awk -F ':' '{print $10}')
    if [ ${#fpr} -gt 2 ]; then

        data=$(tempfile 2>/dev/null)
        trap "rm -f $data" 0 1 2 5 15
        dialog --backtitle $"Freedombone User Control Panel" \
               --title $"Trust a PGP/GPG key or website domain" \
               --radiolist $"Set the trust level for $TRUST_ADDRESS:" 18 70 10 \
               1 $"I don't know or won't say" off \
               2 $"I do NOT trust" off \
               3 $"I trust marginally" on \
               4 $"I trust fully" off \
               5 $"I trust ultimately" off 2> $data
        sel=$?
        case $sel in
            1) return;;
            255) return;;
        esac
        TRUST_LEVEL=$(cat $data)
        if [ ${TRUST_LEVEL} -ge 1 ] ; then
            if [ ${TRUST_LEVEL} -le 5 ] ; then
                echo -e "trust\n${TRUST_LEVEL}\ny\nsave\n" | gpg --command-fd 0 --edit-key $fpr
                if [ "$?" = "0" ]; then
                    gpg --update-trustdb
                    dialog --title $"Trust a PGP/GPG key or website domain" \
                           --backtitle $"Freedombone User Control Panel" \
                           --msgbox $"$TRUST_ADDRESS was set to trust level ${TRUST_LEVEL}" 6 50
                fi
            fi
        fi
    fi
}

function email_rule_subject {
    data=$(tempfile 2>/dev/null)
    trap "rm -f $data" 0 1 2 5 15
    dialog --backtitle $"Freedombone User Control Panel" \
           --title $"Create an email rule" \
           --form "\n" 9 75 4 \
           $"When email arrives with subject containing:" 1 1 "" 1 45 24 28 \
           $"Move to folder:" 2 1 "" 2 45 24 28 \
           $"Public:" 3 1 $"no" 3 45 4 25 \
           2> $data
    sel=$?
    case $sel in
        1) return;;
        255) return;;
    esac
    RULE_SUBJECT=$(cat $data | sed -n 1p)
    RULE_FOLDER=$(cat $data | sed -n 2p)
    RULE_PUBLIC=$(cat $data | sed -n 3p)

    if [ ${#RULE_PUBLIC} -lt 1 ]; then
        RULE_PUBLIC='no'
    fi
    if [[ $RULE_PUBLIC == $'y' || $RULE_PUBLIC == $'Y' || $RULE_PUBLIC == $'true' || $RULE_PUBLIC == $'True' || $RULE_PUBLIC == $'yes' || $RULE_PUBLIC == $'Yes' || $RULE_PUBLIC == $'YES' ]]; then
        RULE_PUBLIC='yes'
    else
        RULE_PUBLIC='no'
    fi
    if [ ${#RULE_SUBJECT} -lt 2 ]; then
        dialog --title $"Create an email rule" \
               --msgbox $"No subject text was given" 6 40
        return
    fi
    if [ ${#RULE_FOLDER} -lt 2 ]; then
        dialog --title $"Create an email rule" \
               --msgbox $"No folder name was given" 6 40
        return
    fi

    ${PROJECT_NAME}-addemail -u $USER -s "$RULE_SUBJECT" \
                   -g "$RULE_FOLDER" --public $RULE_PUBLIC
    dialog --title $"Create an email rule" \
           --msgbox $"Email rule for subject '$RULE_SUBJECT' was added" 6 40
}

function block_unblock_email {
    blockstr=$"Block or unblock emails from a given address"
    data=$(tempfile 2>/dev/null)
    trap "rm -f $data" 0 1 2 5 15
    dialog --backtitle $"Freedombone User Control Panel" \
           --title "$blockstr" \
           --form "\n" 8 65 3 \
           $"When email arrives from address:" 1 1 "" 1 35 24 100 \
           $"Block it:" 2 1 "yes" 2 35 4 4 \
           2> $data
    sel=$?
    case $sel in
        1) return;;
        255) return;;
    esac
    BLOCK_EMAIL=$(cat $data | sed -n 1p)
    BLOCK=$(cat $data | sed -n 2p)
    if [ ${#BLOCK_EMAIL} -lt 2 ]; then
        dialog --title "$blockstr" \
               --msgbox $"No email address was given" 6 40
        return
    fi
    if [[ "$BLOCK_EMAIL" != *"@"* || "$BLOCK_EMAIL" != *"."* ]]; then
        dialog --title "$blockstr" \
               --msgbox $"Unrecognised email address" 6 40
        return
    fi
    if [[ $BLOCK == "y"* || $BLOCK == "Y"* ]]; then
        ${PROJECT_NAME}-ignore -u $USER -e "$BLOCK_EMAIL"
        dialog --title $"Block an email" \
               --msgbox "Email from $BLOCK_EMAIL is now blocked" 6 75
    else
        ${PROJECT_NAME}-unignore -u $USER -e "$BLOCK_EMAIL"
        dialog --title $"Unblock an email" \
               --msgbox "Email from $BLOCK_EMAIL is now unblocked" 6 75
    fi
}

function block_unblock_subject {
    blockstr=$"Block or unblock emails with text in the subject line"
    data=$(tempfile 2>/dev/null)
    trap "rm -f $data" 0 1 2 5 15
    dialog --backtitle $"Freedombone User Control Panel" \
           --title "$blockstr" \
           --form "\n" 8 70 3 \
           $"When email arrives with subject text:" 1 1 "" 1 40 24 28 \
           $"Block it:" 2 1 "yes" 2 40 4 4 \
           2> $data
    sel=$?
    case $sel in
        1) return;;
        255) return;;
    esac
    BLOCK_SUBJECT=$(cat $data | sed -n 1p)
    BLOCK=$(cat $data | sed -n 2p)
    if [ ${#BLOCK_SUBJECT} -lt 2 ]; then
        dialog --title "$blockstr" \
               --msgbox $"No subject was given" 6 40
        return
    fi
    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
    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
    fi
}

function show_gpg_key {
    GPG_FINGERPRINT=$(gpg --fingerprint $MY_EMAIL_ADDRESS | grep -i "key fingerprint" | head -n 1 | awk -F '= ' '{print $2}')
    GPG_DATE=$(gpg --fingerprint $MY_EMAIL_ADDRESS | grep -i "pub" | head -n 1 | awk -F '/' '{print $2}' | awk -F ' ' '{print $2}')
    dialog --title $"My 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
}

function show_full_gpg_key {
    clear
    echo ''
    echo ''
    echo ''
    gpg --armor --export $GPG_ID
    gpg --armor --export-secret-key $GPG_ID
    any_key
}

function publish_gpg_key {
    gpg --send-key $GPG_ID
    if [ $GPG_BACKUP_ID ]; then
        gpg --send-key $GPG_BACKUP_ID
    fi
    dialog --title $"Publish your PGP/GPG key" \
           --msgbox $"Your key has now been published" 6 40
}

function refresh_gpg_keys {
    gpg --refresh-keys
    dialog --title $"Refresh PGP/GPG keys" \
           --msgbox $"Your keys have been refreshed" 6 40
}

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 $"Enter their email address or Key ID below" 8 60 2>$data
    sel=$?
    case $sel in
        0)
            ADD_EMAIL_ADDRESS=$(<$data)
            if [ ${#ADD_EMAIL_ADDRESS} -gt 2 ]; then

                address_is_valid=

                if [[ $ADD_EMAIL_ADDRESS == *"@"* && $ADD_EMAIL_ADDRESS == *"."* ]]; then
                    address_is_valid=1
                else
                    if [[ $ADD_EMAIL_ADDRESS == "0x"* ]]; then
                        address_is_valid=1
                    fi
                fi

                if [ $address_is_valid ]; then
                    clear
                    gpg --search-keys "$ADD_EMAIL_ADDRESS"
                    gpg_set_trust "$ADD_EMAIL_ADDRESS"
                else
                    dialog --title $"Unrecognised email address" \
                           --backtitle $"Freedombone User Control Panel" \
                           --msgbox $"This doesn't look like an email address or key ID" 6 50
                fi
            fi
            ;;
    esac
}

function remove_gpg_key {
    data=$(tempfile 2>/dev/null)
    trap "rm -f $data" 0 1 2 5 15
    dialog --title $"Remove someone's PGP/GPG key" \
           --backtitle $"Freedombone User Control Panel" \
           --inputbox $"Enter their email address below" 8 60 2>$data
    sel=$?
    case $sel in
        0)
            REMOVE_EMAIL_ADDRESS=$(<$data)
            if [ ${#REMOVE_EMAIL_ADDRESS} -gt 2 ]; then
                if [[ $REMOVE_EMAIL_ADDRESS == *"@"* && $REMOVE_EMAIL_ADDRESS == *"."* ]]; then
                    if [[ $REMOVE_EMAIL_ADDRESS != $MY_EMAIL_ADDRESS ]]; then
                        clear
                        gpg --delete-key $REMOVE_EMAIL_ADDRESS
                    else
                        dialog --title $"Remove someone's PGP/GPG key" \
                               --backtitle $"Freedombone User Control Panel" \
                               --msgbox $"It's not a good idea to remove your own encryption key" 6 65
                    fi
                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 add_ssh_key {
    data=$(tempfile 2>/dev/null)
    trap "rm -f $data" 0 1 2 5 15
    dialog --title $"Add an ssh key for logging in" \
           --backtitle $"Freedombone User Control Panel" \
           --inputbox $"This will allow you to log into ${PROJECT_NAME} if you have an ssh key on your system, and provides much stronger security than simply using a login password.\n\nWARNING: If you make any mistakes here then you may not be able to log in and will need to get the administrator to clear your ssh authorized_keys file." 15 60 2>$data
    sel=$?
    case $sel in
        0)
            SSH_PUBLIC_KEY=$(<$data)
            if [ ${#SSH_PUBLIC_KEY} -gt 20 ]; then
                if [[ "$SSH_PUBLIC_KEY" == "ssh-"* ]]; then
                    if [ ! -d /home/$USER/.ssh ]; then
                        mkdir /home/$USER/.ssh
                    fi
                    if [ ! -f /home/$USER/.ssh/authorized_keys ]; then
                        touch /home/$USER/.ssh/authorized_keys
                    fi
                    if ! grep -q "$SSH_PUBLIC_KEY" /home/$USER/.ssh/authorized_keys; then
                        echo "$SSH_PUBLIC_KEY" >> /home/$USER/.ssh/authorized_keys
                        dialog --title $"New ssh key added" \
                               --backtitle $"Freedombone User Control Panel" \
                               --msgbox $"Your ssh key has now been added" 6 50
                    else
                        dialog --title $"ssh key already added" \
                               --backtitle $"Freedombone User Control Panel" \
                               --msgbox $"That ssh key has already been added" 6 50
                    fi
                else
                    dialog --title $"Unrecognised ssh public key" \
                           --backtitle $"Freedombone User Control Panel" \
                           --msgbox $"This doesn't look like an ssh key" 6 50
                fi
            fi
            ;;
    esac
}

function remove_ssh_key {
    data=$(tempfile 2>/dev/null)
    trap "rm -f $data" 0 1 2 5 15
    dialog --title $"Remove an ssh key for logging in" \
           --backtitle $"Freedombone User Control Panel" \
           --inputbox $"Enter the ssh public key which is to be removed. This can be just the address at the end.\n\nWARNING: If you make any mistakes here then you may not be able to log in and will need to get the administrator to clear your ssh authorized_keys file." 15 60 2>$data
    sel=$?
    case $sel in
        0)
            SSH_PUBLIC_KEY=$(<$data)
            if [ ${#SSH_PUBLIC_KEY} -gt 5 ]; then
                if [ -f /home/$USER/.ssh/authorized_keys ]; then
                    sed -i "s|.*${SSH_PUBLIC_KEY}.*||g" /home/$USER/.ssh/authorized_keys
                    dialog --title $"Remove an ssh public key" \
                           --backtitle $"Freedombone User Control Panel" \
                           --msgbox $"The ssh key has been removed" 6 50
                fi
            fi
            ;;
    esac
}

function smtp_proxy {
    MUTTRC_FILE=/home/$USER/.muttrc
    if [ ! -f $MUTTRC_FILE ]; then
        return
    fi
    SMTP_PROXY_ENABLE=$'no'
    SMTP_PROXY_PROTOCOL='smtps'
    SMTP_PROXY_SERVER='mail.myispdomain'
    SMTP_PROXY_PORT=465
    SMTP_PROXY_USERNAME=''
    SMTP_PROXY_PASSWORD=''

    if grep -q "set smtp_url" $MUTTRC_FILE; then
        if grep -q "#set smtp_url" $MUTTRC_FILE; then
            SMTP_PROXY_ENABLE=$'no'
        else
            SMTP_PROXY_ENABLE=$'yes'
        fi
        SMTP_PROXY_PROTOCOL=$(cat $MUTTRC_FILE | grep "set smtp_url" | awk -F '"' '{print $2}' | awk -F ':' '{print $1}')
        SMTP_PROXY_SERVER=$(cat $MUTTRC_FILE | grep "set smtp_url" | awk -F '"' '{print $2}' | awk -F '/' '{print $3}' | awk -F ':' '{print $2}' | awk -F '@' '{print $2}')
        SMTP_PROXY_PORT=$(cat $MUTTRC_FILE | grep "set smtp_url" | awk -F ':' '{print $4}' | awk -F '/' '{print $1}')
        SMTP_PROXY_USERNAME=$(cat $MUTTRC_FILE | grep "set smtp_url" | awk -F '"' '{print $2}' | awk -F '/' '{print $3}' | awk -F ':' '{print $1}')
        SMTP_PROXY_PASSWORD=$(cat $MUTTRC_FILE | grep "set smtp_url" | awk -F '"' '{print $2}' | awk -F '/' '{print $3}' | awk -F ':' '{print $2}' | awk -F '@' '{print $1}')
    fi

    data=$(tempfile 2>/dev/null)
    trap "rm -f $data" 0 1 2 5 15
    dialog --backtitle $"Freedombone Control Panel" \
           --title $"SMTP Proxy for $USER" \
           --form $"You may need to proxy outgoing email via your ISP's mail server. If so enter the details below." 14 75 6 \
           $"Enable proxy:" 1 1 "$SMTP_PROXY_ENABLE" 1 24 5 5 \
           $"Protocol (smtp/smtps):" 2 1 "$SMTP_PROXY_PROTOCOL" 2 24 5 5 \
           $"ISP mail server:" 3 1 "$SMTP_PROXY_SERVER" 3 24 40 10000 \
           $"Port:" 4 1 "$SMTP_PROXY_PORT" 4 24 5 5 \
           $"Username:" 5 1 "$SMTP_PROXY_USERNAME" 5 24 40 10000 \
           $"Password:" 6 1 "$SMTP_PROXY_PASSWORD" 6 24 40 10000 \
           2> $data
    sel=$?
    case $sel in
        1) return;;
        255) return;;
    esac
    SMTP_PROXY_ENABLE=$(cat $data | sed -n 1p)
    SMTP_PROXY_PROTOCOL=$(cat $data | sed -n 2p)
    SMTP_PROXY_SERVER=$(cat $data | sed -n 3p)
    SMTP_PROXY_PORT=$(cat $data | sed -n 4p)
    SMTP_PROXY_USERNAME=$(cat $data | sed -n 5p)
    SMTP_PROXY_PASSWORD=$(cat $data | sed -n 6p)

    # change muttrc
    if [ $SMTP_PROXY_ENABLE != $'no' ]; then
        if ! grep -q "set smtp_url" $MUTTRC_FILE; then
            echo "set smtp_url=\"${SMTP_PROXY_PROTOCOL}://${SMTP_PROXY_USERNAME}:${SMTP_PROXY_PASSWORD}@${SMTP_PROXY_SERVER}:${SMTP_PROXY_PORT}/\"" >> $MUTTRC_FILE
        else
            sed -i "s|set smtp_url=.*|set smtp_url=\"${SMTP_PROXY_PROTOCOL}://${SMTP_PROXY_USERNAME}:${SMTP_PROXY_PASSWORD}@${SMTP_PROXY_SERVER}:${SMTP_PROXY_PORT}/\"|g" $MUTTRC_FILE
        fi
        sed -i 's|#set smtp_url|set smtp_url|g' $MUTTRC_FILE
    else
        if grep "set smtp_url" $MUTTRC_FILE; then
            sed -i 's|set smtp_url|#set smtp_url|g' $MUTTRC_FILE
        fi
    fi
}

function sign_gpg_key {
    data=$(tempfile 2>/dev/null)
    trap "rm -f $data" 0 1 2 5 15
    dialog --title $"Sign a PGP/GPG key or website domain" \
           --backtitle $"Freedombone User Control Panel" \
           --inputbox $"Enter the Key ID, address or domain to be signed.\n\nIf you are signing a website domain then include the https:// at the beginning.\n\nIf you are signing an ssh key then include ssh:// before the domain name." 14 75 2>$data
    sel=$?
    case $sel in
        0)
            SIGN_ADDRESS=$(<$data)
            if [ ${#SIGN_ADDRESS} -gt 2 ]; then
                clear
                gpg --search "$SIGN_ADDRESS"
                fpr=$(gpg --with-colons --fingerprint "$SIGN_ADDRESS" | grep fpr | head -n 1 | awk -F ':' '{print $10}')
                if [ ${#fpr} -gt 2 ]; then
                    gpg --sign-key $fpr
                    if [ "$?" = "0" ]; then
                        gpg --update-trustdb
                        dialog --title $"Sign a PGP/GPG key" \
                               --backtitle $"Freedombone User Control Panel" \
                               --msgbox $"$SIGN_ADDRESS was signed" 6 50
                    fi
                fi
            fi
            ;;
    esac
}


function gpg_key_trust {
    data=$(tempfile 2>/dev/null)
    trap "rm -f $data" 0 1 2 5 15
    dialog --title $"Trust a PGP/GPG key or website domain" \
           --backtitle $"Freedombone User Control Panel" \
           --inputbox $"Enter the Key ID, address or domain to be trusted.\n\nIf you are trusting a website domain then include the https:// at the beginning.\n\nIf you are trusting an ssh key then include ssh:// before the domain name." 14 75 2>$data
    sel=$?
    case $sel in
        0)
            TRUST_ADDRESS=$(<$data)
            if [ ${#TRUST_ADDRESS} -gt 2 ]; then
                clear
                gpg --search "$TRUST_ADDRESS"
                gpg_set_trust "$TRUST_ADDRESS"
            fi
            ;;
    esac
}

function menu_encryption_keys {
    while true
    do
        data=$(tempfile 2>/dev/null)
        trap "rm -f $data" 0 1 2 5 15
        dialog --backtitle $"Freedombone User Control Panel" \
               --title $"My Encryption Keys" \
               --radiolist $"Choose an operation:" 19 70 11 \
               1 $"Show your PGP/GPG key" off \
               2 $"Show your full PGP/GPG key, including private key" off \
               3 $"Publish your PGP/GPG key so that others can find it" off \
               4 $"Add someone's PGP/GPG key" off \
               5 $"Remove someone's PGP/GPG key" off \
               6 $"Sign a PGP/GPG key or website domain" off \
               7 $"Refresh your PGP/GPG keys" off \
               8 $"Add an ssh key for logging in" off \
               9 $"Remove an ssh key for logging in" off \
               10 $"Set the trust level for a PGP/GPG key" off \
               11 $"Back to main menu" on 2> $data
        sel=$?
        case $sel in
            1) break;;
            255) break;;
        esac
        case $(cat $data) in
            1) show_gpg_key;;
            2) show_full_gpg_key;;
            3) publish_gpg_key;;
            4) add_gpg_key;;
            5) remove_gpg_key;;
            6) sign_gpg_key;;
            7) refresh_gpg_keys;;
            8) add_ssh_key;;
            9) remove_ssh_key;;
            10) gpg_key_trust;;
            11) break;;
        esac
    done
}

function menu_email {
    while true
    do
        data=$(tempfile 2>/dev/null)
        trap "rm -f $data" 0 1 2 5 15
        dialog --backtitle $"Freedombone User Control Panel" \
               --title $"Change Email Filtering Rules" \
               --radiolist $"Choose an operation:" 14 70 7 \
               1 $"Add yourself to a mailing list" off \
               2 $"Remove yourself from a mailing list" off \
               3 $"Add an email rule for an address" off \
               4 $"Add an email rule for a subject" off \
               5 $"Block or unblock an email address" off \
               6 $"Block or unblock email with subject text" off \
               7 $"Back to main menu" on 2> $data
        sel=$?
        case $sel in
            1) break;;
            255) break;;
        esac
        case $(cat $data) in
            1) add_to_mailing_list;;
            2) remove_user_from_mailing_list;;
            3) email_rule_address;;
            4) email_rule_subject;;
            5) block_unblock_email;;
            6) block_unblock_subject;;
            7) break;;
        esac
    done
}

function menu_admin {
    if [ ! -f /etc/sudoers ]; then
        clear
        exit 0
    fi
    sudo ${PROJECT_NAME}-controlpanel
}

function sign_keys {
    if [ ! -f /home/$USER/.monkeysphere/server_keys ]; then
        return
    fi

    dialog --title $"Monkeysphere sign server keys" \
           --backtitle $"Freedombone Security Configuration" \
           --defaultno \
           --yesno $"\nMonkeysphere has been enabled and you will need to sign and trust the server keys. Do you want to do that now?" 8 60
    sel=$?
    case $sel in
        0) ${PROJECT_NAME}-sec --sign yes;;
    esac
}

function menu_run_client_app {
    detect_installable_apps

    applist=""
    appnames=()
    n=1
    app_index=0
    for a in "${APPS_AVAILABLE[@]}"
    do
        if [[ ${APPS_INSTALLED[$app_index]} != "0" ]]; then
            if [[ $(function_exists run_client_${a}) == "1" ]]; then
                applist="$applist $n $a off"
                n=$[n+1]
                appnames+=("$a")
            fi
        fi
        app_index=$[app_index+1]
    done
    if [ $n -le 1 ]; then
        return
    fi
    backstr=$'Exit'
    applist="$applist $n $backstr on"
    appnames+=("Exit")

    choice=$(dialog --stdout --backtitle $"Freedombone" \
                     --title $"Run an App" \
                     --radiolist $'Choose:' \
                     16 40 20 $applist)

    if [ $? -eq 0 ]; then
        app_index=$[choice-1]
        chosen_app=${appnames[$app_index]}
        if [[ $chosen_app != "Exit" ]]; then
            run_client_${chosen_app}
        fi
    fi
}

function menu_top_level {
    while true
    do
        data=$(tempfile 2>/dev/null)
        trap "rm -f $data" 0 1 2 5 15
        dialog --backtitle $"Freedombone User Control Panel" \
               --title $"User Control Panel" \
               --radiolist $"Choose an operation:" 19 50 12 \
               1 $"Use Email" off \
               2 $"Change Email Filtering Rules" off \
               3 $"Run an App" off \
               4 $"Browse the Web" off \
               5 $"My Encryption Keys" off \
               6 $"Set an outgoing email proxy" off \
               7 $"Administrator controls" off \
               8 $"Exit to the command line" off \
               9 $"Log out" on 2> $data
        sel=$?
        case $sel in
            1) exit 1;;
            255) exit 1;;
        esac
        case $(cat $data) in
            1) mutt;;
            2) menu_email;;
            3) menu_run_client_app;;
            4) torify elinks;;
            5) menu_encryption_keys;;
            6) smtp_proxy;;
            7) menu_admin;;
            8) break;;
            9) kill -HUP `pgrep -s 0 -o`;;
        esac
    done
}

sign_keys
menu_top_level
clear
. ~/.bashrc
exit 0
