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stratux/image/hostapd_manager.sh

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#!/bin/bash
######################################################################
# STRATUX HOSTAPD MANAGER #
######################################################################
#Logging Function
SCRIPT=`basename ${BASH_SOURCE[0]}`
STX_LOG="/var/log/stratux.log"
function wLog () {
echo "$(date +"%Y/%m/%d %H:%m:%S") - $SCRIPT - $1" >> $STX_LOG
}
wLog "Running Hostapd Manager Script."
# files to edit
HOSTAPD=('/etc/hostapd/hostapd.user')
# values to be added to hostapd.user for security.
HOSTAPD_SECURE_VALUES_DELETE=('auth_algs=1' 'wpa=3' 'wpa_passphrase=' 'wpa_key_mgmt=WPA-PSK' 'wpa_pairwise=TKIP' 'rsn_pairwise=CCMP')
# 'wpa_passphrase=' was left out of this to set it with the $wifiPass. I assume you can not evaluate a variable from within an array variable
HOSTAPD_SECURE_VALUES_WRITE=('auth_algs=1' 'wpa=3' 'wpa_key_mgmt=WPA-PSK' 'wpa_pairwise=TKIP' 'rsn_pairwise=CCMP')
#Initialize variables to default values.
OPT_S=false
OPT_C=false
OPT_E=false
OPT_O=false
OPT_P=false
wifiPass="SquawkDirtyToMe!"
parm="*"
err="####"
att="+++"
#Set fonts for Help.
BOLD=$(tput bold)
STOT=$(tput smso)
UNDR=$(tput smul)
REV=$(tput rev)
RED=$(tput setaf 1)
GREEN=$(tput setaf 2)
YELLOW=$(tput setaf 3)
MAGENTA=$(tput setaf 5)
WHITE=$(tput setaf 7)
NORM=$(tput sgr0)
NORMAL=$(tput sgr0)
#Help function
function HELP {
echo -e \\n"Help documentation for ${BOLD}${SCRIPT}.${NORM}"\\n
echo -e "${REV}Basic usage:${NORM} ${BOLD}$SCRIPT -s ssid -c chan -p pass ${NORM}"\\n
echo "The following command line switches are recognized."
echo "${REV}-s${NORM} --Sets the SSID to ${BOLD}ssid${NORM}. \"-s stratux\""
echo "${REV}-c${NORM} --Sets the channel to ${BOLD}chan${NORM}. \"-c 1\""
echo "${REV}-o${NORM} --Turns off encryption and sets network to open. Cannot be used with -e or -p."
echo "${REV}-e${NORM} --Turns on encryption with passphrase ${BOLD}$wifiPass${NORM}. Cannot be used with -o or -p"
echo "${REV}-p${NORM} --Turns on encryption with your chosen passphrase ${BOLD}pass${NORM}. 8-63 Printable Characters(ascii 32-126). Cannot be used with -o or -e. \"-p password!\""
echo -e "${REV}-h${NORM} --Displays this help message. No further functions are performed."\\n
echo -e "Example: ${BOLD}$SCRIPT -s Stratux-N3558D -c 5 -p SquawkDirty!${NORM}"\\n
exit 1
}
function confirm() {
# call with a prompt string or use a default
read -r -p "$1 " response
case "$response" in
[yY][eE][sS]|[yY])
true
;;
*)
exit 1
;;
esac
}
function cleanhostapd () {
wLog "Cleaning hostapd config at $1"
for j in "${HOSTAPD_SECURE_VALUES_DELETE[@]}"
do
sed -i "/$j/ d" ${1}
done
sed -i '/^\s*$/d' ${1}
}
function writehostapd () {
wLog "Writing hostapd config at $1"
sed -i '/^\s*$/d' ${1}
echo "" >> ${1}
for j in "${HOSTAPD_SECURE_VALUES_WRITE[@]}"
do
echo "${j}" >> ${1}
done
echo "wpa_passphrase=$wifiPass" >> ${1}
}
#apply settings and restart all processes
function APPLYSETTINGS {
wLog "Restarting all wifi settings."
echo "${RED}${BOLD} $att At this time the script will restart your WiFi services.${WHITE}${NORMAL}"
echo "If you are connected to Stratux through the ${BOLD}192.168.10.1${NORMAL} interface then you will be disconnected"
echo "Please wait up to 1 min and look for the new SSID on your wireless device."
sleep 3
echo "${YELLOW}$att Restarting Stratux WiFi Services... $att ${WHITE}"
echo "${YELLOW}$att SSH will now disconnect if connected to http://192.168.10.1 ... $att ${WHITE}"
echo "ifdown wlan0..."
ifdown wlan0
sleep 0.5
echo "ifup wlan0..."
echo "Calling Stratux WiFI Start Script(stratux-wifi.sh) via ifup wlan0..."
ifup wlan0
sleep 0.5
echo ""
echo ""
echo "All systems should be up and running and you should see your new SSID!"
}
clear
echo ""
echo "#### Stratux HOSTAPD Settings ####"
echo ""
if [ $(whoami) != 'root' ]; then
echo "${BOLD}${RED}This script must be executed as root, exiting...${WHITE}${NORMAL}"
echo "${BOLD}${RED}USAGE${WHITE}${NORMAL}"
exit 1
fi
#Check the number of arguments. If none are passed, print help and exit.
NUMARGS=$#
if [ $NUMARGS -eq 0 ]; then
HELP
fi
### Start getopts code ###
#Parse command line flags
#If an option should be followed by an argument, it should be followed by a ":".
#Notice there is no ":" after "eoqh". The leading ":" suppresses error messages from
#getopts. This is required to get my unrecognized option code to work.
options=':s:c:p:eoh'
#options=':s:c:h'
while getopts $options option; do
case $option in
s) #set option "s"
if [[ -z "${OPTARG}" || "${OPTARG}" == *[[:space:]]* || "${OPTARG}" == -* ]]; then
echo "${BOLD}${RED}$err No SSID for -s, exiting...${WHITE}${NORMAL}"
wLog "No SSID for -s, exiting..."
exit 1
else
OPT_S=$OPTARG
echo "$parm SSID Option -s used: $OPT_S"
echo "${GREEN} SSID will now be ${BOLD}${UNDR}$OPT_S${NORMAL}.${WHITE}"
fi
;;
c) #set option "c"
if [[ -z "${OPTARG}" || "${OPTARG}" == *[[:space:]]* || "${OPTARG}" == -* ]]; then
echo "${BOLD}${RED}$err Channel option(-c) used without value, exiting... ${WHITE}${NORMAL}"
wLog "Channel option(-c) used without value, exiting..."
exit 1
else
OPT_C=$OPTARG
echo "$parm Channel option -c used: $OPT_C"
if [[ "$OPT_C" =~ ^[0-9]+$ ]] && [ "$OPT_C" -ge 1 -a "$OPT_C" -le 13 ]; then
echo "${GREEN} Channel will now be set to ${BOLD}${UNDR}$OPT_C${WHITE}${NORMAL}."
else
echo "${BOLD}${RED}$err Channel is not within acceptable values, exiting...${WHITE}${NORMAL}"
wLog "Channel is not within acceptable values, exiting..."
exit 1
fi
fi
;;
e) #set option "e" with default passphrase
if [[ -z "${OPTARG}" || "${OPTARG}" == *[[:space:]]* || "${OPTARG}" == -* ]]; then
echo "$parm Encrypted WiFI Option -e used."
OPT_E=$wifiPass
echo "${GREEN} WiFi will be encrypted using ${BOLD}${UNDR}$OPT_E${NORMAL}${GREEN} as the passphrase!${WHITE}${NORMAL}"
else
echo "${BOLD}${RED}$err Option -e does not require argument. exiting...${WHITE}${NORMAL}"
wLog "Option -e does not require argument."
exit 1
fi
;;
p) #set encryption with user specified passphrase
if [[ -z "${OPTARG}" || "${OPTARG}" =~ ^[[:space:]]*$ || "${OPTARG}" == -* ]]; then
echo "${BOLD}${RED}$err Encryption option(-p) used without passphrase!${WHITE}${NORMAL}"
echo "${BOLD}${RED}$err Encryption option(-p) required an argument \"-p passphrase\". exiting...${WHITE}${NORMAL}"
wLog "Encryption option(-p) used without passphrase!"
else
OPT_P=$OPTARG
wifiPass=$OPTARG
fi
echo "$parm Encryption option -p used:"
if [ -z `echo $OPT_P | tr -d "[:print:]"` ] && [ ${#OPT_P} -ge 8 ] && [ ${#OPT_P} -le 63 ]; then
echo "${GREEN} WiFi will be encrypted using ${BOLD}${UNDR}$OPT_P${NORMAL}${GREEN} as the passphrase!${WHITE}${NORMAL}"
else
echo "${BOLD}${RED}$err Invalid PASSWORD: 8 - 63 printable characters, exiting...${WHITE}${NORMAL}"
wLog "Invalid PASSWORD: 8 - 63 printable characters, exiting..."
exit 1
fi
;;
o) #set option "o"
if [[ -z "${OPTARG}" || "${OPTARG}" == *[[:space:]]* || "${OPTARG}" == -* ]]; then
echo "$parm Open WiFI Option -o used."
echo "${GREEN} WiFi will be set to ${BOLD}${UNDR}OPEN${NORMAL}${GREEN} or ${BOLD}${UNDR}UNSECURE${WHITE}${NORMAL}"
OPT_O=true
else
echo "${BOLD}${RED}$err Option -o does not require argument. exiting...${WHITE}${NORMAL}"
wLog "Option -o does not require argument. exiting..."
exit 1
fi
;;
h) #show help
HELP
;;
\?) # invalid option
echo "${BOLD}${RED}$err Invalid option -$OPTARG ${WHITE}${NORMAL}" >&2
HELP
exit 1
;;
:) # Missing Arg
echo "${BOLD}${RED}$err Missing option for argument -$OPTARG ${WHITE}${NORMAL}" >&2
HELP
exit 1
;;
*) # Invalid
echo "${BOLD}${RED}$err Unimplemented option -$OPTARG ${WHITE}${NORMAL}" >&2
HELP
exit 1
;;
esac
done
shift $((OPTIND-1)) #This tells getopts to move on to the next argument.
### End getopts code ###
### Main loop to process files ###
#This is where your main file processing will take place. This example is just
#printing the files and extensions to the terminal. You should place any other
#file processing tasks within the while-do loop.
if [[ $OPT_O == true && ( $OPT_E != false || $OPT_P != false ) ]]; then
echo "${BOLD}${RED}$err Option -e , -p and -o cannot be used simultaneously. Exiting... ${WHITE}${NORMAL}"
wLog "Option -e , -p and -o cannot be used simultaneously."
exit 1
fi
if [ $OPT_P != false ] && [ $OPT_E != false ]; then
echo "${BOLD}${RED}$err Option -e and -p cannot be used simultaneously. Exiting... ${WHITE}${NORMAL}"
wLog "Option -e and -p cannot be used simultaneously."
exit 1
fi
echo ""
echo "${BOLD}No errors found. Continuing...${NORMAL}"
echo ""
confirm "Are you ready to apply these settings? [y/n]"
####
#### File modification loop
####
for i in "${HOSTAPD[@]}"
do
if [ -f ${i} ]; then
echo "Working on $i..."
wLog "Working on $i..."
if [ $OPT_S != false ]; then
wLog "Writing SSID $OPT_S to file $i"
echo "${MAGENTA}Setting ${YELLOW}SSID${MAGENTA} to ${YELLOW}$OPT_S ${MAGENTA}in $i...${WHITE}"
if grep -q "^ssid=" ${HOSTAPD[$x]}; then
sed -i "s/^ssid=.*/ssid=${OPT_S}/" ${i}
else
echo ${OPT_S} >> ${i}
fi
fi
if [ $OPT_C != false ]; then
wLog "Writing channel $OPT_C to file $i"
echo "${MAGENTA}Setting ${YELLOW}Channel${MAGENTA} to ${YELLOW}$OPT_C ${MAGENTA}in $i...${WHITE}"
if grep -q "^channel=" ${i}; then
sed -i "s/^channel=.*/channel=${OPT_C}/" ${i}
else
echo ${OPT_C} >> ${i}
fi
fi
if [ $OPT_E != false ] || [ $OPT_P != false ]; then
wLog "Writing security and setting passphrase to $wifiPass to file $i"
echo "${MAGENTA}Adding WPA encryption with passphrase: ${YELLOW}$wifiPass ${MAGENTA}to $i...${WHITE}"
cleanhostapd $i
writehostapd $i
fi
if [ $OPT_O != false ]; then
wLog "Removing WiFi security in file $i"
echo "${MAGENTA}Removing WPA encryption in $i...${WHITE}"
cleanhostapd $i
fi
echo "${GREEN}Modified ${i}...done${WHITE}"
echo ""
else
echo "${MAGENTA}No ${i} file found...${WHITE}${NORMAL}"
echo ""
fi
done
### End main loop ###
### Apply Settings and restart all services
APPLYSETTINGS
exit 0
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