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Seeding Bash header file

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#!/bin/bash
## Configuration reading ##
function param() {
if [ -z "$1" ] || [ ! -f "$1" ] || [ -z "$2" ]; then
echo "Configuration file not specified or doesn't exist."
exit 1;
fi
grep '^'"$2"'=' "$1" | sed 's#^'"$2"'='"##"
return
}
## Visual Functions ##
# These function creates a visual indicator that a step has happened.
function header () {
tput setaf 1; tput bold; echo $@; tput sgr0; return
}
function errorheader () {
tput setaf 1 1>&2; tput bold 1>&2; echo $@ 1>&2; tput sgr0 1>&2; return
}
## Storage functions ##
function addfs() {
if [ -z "$1" ] || [ -z "$2" ] || (echo "$3" | egrep -v -E '^[0-9]{1,4}'); then
echo "Need a filesystem(1), volume group path(2), and size (3)"
return
fi
lvcreate -L $3"G" -n "$(echo $2 | cut -f 4 -d '/')" "$(echo $2 | cut -f 3 -d '/')"
mkfs.ext4 -m 0 -E nodiscard "$2"
tune2fs -e remount-ro "$2"
tune2fs -c 1 "$2"
mkdir "$1"
echo "$2 $1 ext4 defaults 1 2" >> /etc/fstab
mount "$1" &>/dev/null
}
#This function will forcibly remove a filesystem 1 and lv 2 from a VG
function forciblyremove() {
if [ -z "$1" ] || [ -z "$2" ]; then
echo "Need a filesystem(1) and volume group path(2)"
elif [ -z "$(mount | grep " ""$1"" ")" ]; then
errorheader Filesystem is not mounted -- cannot safely remove mount point.
else
fuser -km "$1"
umount -l "$1"
rm -Rf "$1"
fi
lvremove -f "$2"
sed -i "/\/$(echo $2 | rev | cut -f 1 -d '/' | rev) /d" /etc/fstab
}
## Date Math Functions ##
# These move dates to be used by AT jobs. They accept an date-style argument and return the new date in format YYMMDDHHMM.
#This function returns a new date incremented by (1)seconds
function incrementdate() {
if [ -z "$2" ]; then
currDateS=$(date +%s)
else
currDateS=$(date -d "$2" +%s)
fi
targetDateS=$(($currDateS + $1))
echo $(date -d '@'$targetDateS +%y%m%d%H%M)
}
#This function returns a new date decremented by (1)seconds
function decrementdate() {
if [ -z "$2" ]; then
currDateS=$(date +%s)
else
currDateS=$(date -d "$2" +%s)
fi
targetDateS=$(($currDateS - $1))
echo $(date -d '@'$targetDateS +%y%m%d%H%M)
}
## QA Functions ##
# This is for QA to test sanitizing input
function qaunittest {
if [ -z "$1" ] || [ -z "$2" ]; then
echo Usage: qaunittest function input expectedreturn inputarguments
exit
fi
function="$1"
userinput="$2"
expectedreturn="$3"
fnargs="$4"
input="input""$inputcount"
cmd="$(printf "source /usr/local/src/SharedLibraries/Bash/header;%s '%s' '%s' %s >/dev/null;echo \$%s" "$function" "$input" "Input" "$fnargs" "$input")"
export $input="$(bash -c "$cmd" <<EOM
$(echo -ne $userinput)
EOM
)"
if [ "${!input}" == "$expectedreturn" ]; then
tput setaf 2; printf "PASS "; tput sgr0; echo -- found ${!input} in \'$(echo $cmd | cut -f 2 -d ';')\'
else
tput setaf 1; printf "FAIL "; tput sgr0; echo -- found ${!input} \(expected $expectedreturn\) in \'$(echo $cmd | cut -f 2 -d ';')\'
fi
export inputcount=$(($inputcount + 1))
return
}
## Prompt functions ##
## All input should pass through these to ensure it's appropriately sanitized.
## Do not use read statements directly!
## We do not unset the variable ${!1} so that if the script is accepting command-line arguments that are invalid the user is prompted.
export maxattempts=5
# This function will prompt the user for variable 1 with string 2 until it gets a nonempty answer.
function prompt-var() {
if [ -z "$1" ] || [ -z "$2" ]; then
echo "Need a variable name (1) and a prompt string (2)"
return 1;
fi
inputtime="0"
#echo "$0 is checking for $1 -- currently set to <${!1}>"
while [ -z "${!1}" ] || (echo "${!1}" | egrep -v '^[-0-9a-zA-Z ,.@]{1,50}$' &>/dev/null); do
printf "%s: " "$2";
read $1;
if [ "${!1}" == "OPT" ] || [ $inputtime -gt $maxattempts ]; then exit 0; fi
inputtime=$(($inputtime + 1))
done
return 0;
}
# This function will prompt the user for variable 1 with string 2 until it gets a nonempty answer.
function prompt-var-len() {
if [ -z "$1" ] || [ -z "$2" ] || [ -z "$3" ]; then
echo "Need a variable name (1), prompt string (2), and a length (3)"
return 1;
fi
inputtime="0"
#echo "$0 is checking for $1 -- currently set to <${!1}>"
while [ -z "${!1}" ] || (echo "${!1}" | grep -v -E "^[0-9a-zA-Z]{1,$3}$" &>/dev/null); do
printf "%s (Max length: %s): " "$2" "$3";
read $1;
if [ "${!1}" == "OPT" ] || [ $inputtime -gt $maxattempts ]; then exit 0; fi
inputtime=$(($inputtime + 1))
done
return 0;
}
# This function will prompt the user for variable 1 with string 2 until it gets a nonempty answer.
function prompt-password() {
if [ -z "$1" ] || [ -z "$2" ]; then
echo "Need a variable name (1) and a prompt string (2)"
return 1;
fi
inputtime="0"
#echo "$0 is checking for $1 -- currently set to <${!1}>"
while [ -z "${!1}" ] || [ $(echo ${!1} | wc -c) -gt 50 ]; do
printf "%s: " "$2";
read -s $1;
if [ "${!1}" == "OPT" ] || [ $inputtime -gt $maxattempts ]; then exit 0; fi
echo
inputtime=$(($inputtime + 1))
done
return 0;
}
#This function will prompt the user for a variable 1 with string 2 until it gets an answer between min 3 and max 4.
function prompt-num-var() {
if [ -z "$1" ] || [ -z "$2" ] || [ "$3" -ne "$3" ] || [ "$4" -le "$3" ]; then
echo "Need a variable name (1), prompt string (2), min (3), and max (4)";
echo 1: $1;
echo 2: $2;
echo 3: $3;
echo 4: $4;
return 1;
fi
inputtime="0"
#echo "$0 is checking for $1 -- currently set to <${!1}>"
while [ -z "${!1}" ] || (echo "${!1}" | grep -v -E "^[0-9]{1,8}$" &>/dev/null) || [ "${!1}" -lt "$3" ] || [ "${!1}" -gt "$4" ]; do
printf "%s (between %s and %s): " "$2" "$3" "$4";
read $1;
if [ "${!1}" == "OPT" ] || [ $inputtime -gt $maxattempts ]; then exit 0; fi
inputtime=$(($inputtime + 1))
done
return 0;
}

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