#!/bin/sh
# Bare Metal Alchemist, 2022

############################################# 
#             Copper - ♀                    # 
############################################# 

# Copper wires form the backbone of electrical systems worldwide
# and much of the internet as a whole.

# This ingredient is focused around scripts that make it easier to
# interact with and create new networks on your system.

locate_torrc() {
    if [ -n $TORRCPATH ]; then
        if [ -e /usr/local/etc/tor/torrc ]; then
            TORRCPATH='/usr/local/etc/tor/torrc'
        elif [ -e /etc/tor/torrc ]; then
            TORRCPATH='/etc/tor/torrc'
        elif [ -e $HOME/.tor/torrc ]; then
            TORRCPATH="${HOME}/.tor/torrc"
        else
            echo -e "${RED}Uh oh...${RESET} I couldn't figure out\
                where your torrc file is. That might cause some issues"                                                                                                             
            exit 1
        fi
    fi

    echo -e "Your torrc is located at ${BLUE}${TORRCPATH}${RESET}"
    remember "TORRCPATH=${TORRCPATH}"
}

configure_tor() {
    locate_torrc

    echo -e "Your existing torrc file has the following settings: "
    echo ""
    cat $TORRCPATH | grep '^[^#]'
    echo ""
    echo -en "Would you like to reset them?: ${BLUE}(y/n)${RESET} "
    read torrc_reset
    case $torrc_reset in
        "Y" | "y")
            cp resources/torrc-template .                                                                                                                                                                                                 
            sudo sed -i "s#USER#${USER}#g" torrc-template                                                                                                                                                                                 
            sudo sed -i "s#HOME#${HOME}#g" torrc-template                                                                                                                                                                                 
            sudo mv torrc-template $TORRCPATH                                                                                                                                                                                         
            echo -e "${GREEN}Torrc file reset!${RESET}"
            ;;
        '*')
            echo "Okay, we'll leave it as is."
            ;;
    esac
    echo ""

    echo -e "Tor configuration ${GREEN}complete!${RESET}"
}

get_external_ip() {
    case $DISTRO in
        "arch")
            install_if_needed dnsutils
            ;;
        "*")
            #install_if_needed dig
            echo "Not yet supported! Feel free to help out here :)"
            ;;
    esac

    EXTERNAL_IP=$(dig @resolver4.opendns.com myip.opendns.com +short)
    echo "Your external IP is $EXTERNAL_IP"
    remember "EXTERNAL_IP=$EXTERNAL_IP"
}

get_domain_name() {
    read -p "Do you have a domain name pointing to this computer? (y/n): " dns                                                                                                                                                       
    echo ""                                                                                                                                                                                                                          
    case $dns in                                                                                                                                                                                                                     
        y | Y)                                                                                                                                                                                                                       
            echo "Good to hear! What is it?"                                                                                                                                                                                         
            read -p "http://" domain                                                                                                                                                                                                 
            ;;                                                                                                                                                                                                                       
        *)                                                                                                                                                                                                                           
            echo "Okay, let's just leave it open for now."                                                                                                                                                                           
            domain=$(dig @resolver4.opendns.com myip.opendns.com +short)                                                                                                                                                             
            anywhere=1                                                                                                                                                                                                               
            echo "Try accessing this AO from either localhost, 127.0.0.1, or ${domain}"                                                                                                                                              
            ;;                                                                                                                                                                                                                       
    esac                                                                                                                                                                                                                             

    if [ "$anywhere" -eq 1 ]; then                                                                                                                                                                                                   
        ACCESS_POINT=http://localhost                                                                                                                                                                                                
    else                                                                                                                                                                                                                             
        ACCESS_POINT=https://$domain                                                                                                                                                                                                 
    fi  
}

check_ports() {
	install_if_needed nmap                                                                                                                                                                                                            
	nmap -Pn $domain > nmap.txt                                                                                                                                                                                                       
	OPEN=1                                                                                                                                                                                                                            
	if grep -qE "^80/.*(open|filtered)" nmap.txt; then                                                                                                                                                                                
		echo -e "I can see port ${GREEN}80${RESET}!"                                                                                                                                                                                  
	else                                                                                                                                                                                                                              
		echo -e "Uh oh, port ${RED}80${RESET} isn't showing up..."                                                                                                                                                                    
		OPEN=0                                                                                                                                                                                                                        
	fi                                                                                                                                                                                                                                

	if grep -qE "^443/.*(open|filtered)" nmap.txt; then                                                                                                                                                                               
		echo -e "I can see port ${GREEN}443${RESET} as well!"                                                                                                                                                                         
	else                                                                                                                                                                                                                              
		echo -e "Uh oh, port ${RED}443${RESET} isn't showing up..."                                                                                                                                                                   
		OPEN=0                                                                                                                                                                                                                        
	fi                                                                                                                                                                                                                                
	rm nmap.txt                                                                                                                                                                                                                       
	echo ""                                                                                                                                                                                                                           
	if [[ $OPEN -eq 0 ]]; then                                                                                                                                                                                                        
		echo -e "${RED}Port configuration needed.${RESET} Something (probably your wireless router) is blocking us from serving this page to the rest of the internet."                                                               
		echo "Port forwarding is relatively simple, but as it stands it is beyond the scope of this script to be able to automate it."                                                                                             
		echo -e "You'll probably need to look up the login information for your specific router and forward the red ports to the local IP of this computer (${BOLD}$(ip route | grep default | grep -oP "(?<=src )[^ ]+")${RESET})."
		echo -e "You can log into your router at this IP address: ${BOLD}$(route -n | grep ^0.0.0.0 | awk '{print $2}')${RESET}"                                                                                                   
		echo "That's all the help I can give you regarding port forwarding. Good luck!"                                                                                                                                            
		echo ""                                                                                                                                                                                                                    
	fi 
}



# internet connections? copper wires etc.
# using yggdrasil could maybe fit in here
# nginx setup
# port checking