new_gentoo_build.sh

#!/bin/bash
[[ -e $HOME/colors.conf ]] && . $HOME/colors.conf
CWD=`pwd`
NAME=$1
#DIALOG="${DIALOG=dialog} --clear"
tempfile=/tmp/sel-$$

[[ -z "${NAME}" ]] && echo "Syntax: $0 <name> [<path to stage3 tarball>] [<path to portage tarball>]" && exit 1;

sudo ls > /dev/null

if [ ! -d "${NAME}" ]; then
	echo -e ">> ${boldwhite}Setting up${clear} environment for '${NAME}'"
	sudo mkdir -p ${NAME}/dev
	sudo mkdir -p ${NAME}/proc
	sudo mkdir -p ${NAME}/tmp
	sudo mkdir -p ${NAME}/sys
fi

echo -en ">> ${boldwhite}Ensuring${clear} proper directory perms..."
sudo chmod 1777 ${NAME}/tmp
sudo chown root:root ${NAME}/dev ${NAME}/proc ${NAME}/tmp ${NAME}/sys
echo "done."

STAGE3_TARBALL=
PORTAGE_TARBALL=

for arg in $2 $3 $4 $5 $6 $7 $8 $9; do
	if [ -z "${STAGE3_TARBALL}" ]; then
		STAGE3_TARBALL="${arg}"
	elif [ -z "${PORTAGE_TARBALL}" ]; then
		PORTAGE_TARBALL="${arg}"
	fi
done

if [ -z "${STAGE3_TARBALL}" ]; then
	ARCH="x86"
	echo -en "Architecture? [${boldwhite}x86${clear}, amd64] "
	read -e A
	[[ ! -z "${A}" ]] && ARCH="${A}"
	
	PROFILE="default"
	echo -en "Profile? [${boldwhite}default${clear}, hardened] "
	read -e P
	[[ ! -z "${P}" ]] && PROFILE="${P}"

	FILE="latest-stage3.txt"
	[[ "${PROFILE}" == "hardened" ]] && FILE="latest-stage3-i686-hardened.txt"
	FILE_URL="`wget -q -O - ${STAGE3_URL}/${FILE} | tail -1`"
	FILENAME="`basename ${FILE_URL}`"

	STAGE3_URL="http://distfiles.gentoo.org/releases/${ARCH}/autobuilds"
	echo -e ">> ${boldwhite}Downloading${clear} latest stage3 tarball; please wait..."
	wget --progress=bar:force -O /tmp/${FILENAME} "${STAGE3_URL}/${FILE_URL}"
	if [ $? -eq 0 ]; then
		STAGE3_TARBALL=/tmp/${FILENAME}
	else
		exit 1;
	fi
fi

echo -e ">> ${boldwhite}Extracting${clear} stage3 to image; please wait..."
cd ${NAME} && pv "${STAGE3_TARBALL}" | sudo tar jpxf - && cd ../

if [ -z "${PORTAGE_TARBALL}" ]; then
	PORTAGE_URL="http://distfiles.gentoo.org/releases/snapshots/current/portage-latest.tar.bz2"
	echo -e ">> ${boldwhite}Downloading${clear} latest portage snapshot; please wait..."
	wget --progress=bar:force -O /tmp/portage-latest.tar.bz2 "${PORTAGE_URL}"
	if [ $? -eq 0 ]; then
		PORTAGE_TARBALL=/tmp/portage-latest.tar.bz2
	else
		exit 1;
	fi
fi

echo -e ">> ${boldwhite}Extracting${clear} portage-latest to image; please wait..."
cd ${NAME}/usr && pv "${PORTAGE_TARBALL}" | sudo tar jpxf - && \
	cd ../../ && rm -f /tmp/portage-latest*

echo -e ">> ${boldwhite}Fixing${clear} localtime for image; please wait..."
cd ${NAME}/etc
sudo ln -sf ../usr/share/zoneinfo/America/New_York localtime
cd ${CWD}

echo -e ">> ${boldwhite}Creating banner${clear} for ${NAME}..."
echo > ${NAME}.banner
figlet "${NAME}" >> ${NAME}.banner
echo >> ${NAME}.banner
echo "Hostname:  " >> ${NAME}.banner
echo "Address:   " >> ${NAME}.banner
echo "Arch:      ${ARCH}" >> ${NAME}.banner
echo "Profile:   ${PROFILE}" >> ${NAME}.banner
echo "CodeName:  " >> ${NAME}.banner
echo "Kernel:    " >> ${NAME}.banner
echo "LSB:       " >> ${NAME}.banner
echo "Built:     %DATE%" >> ${NAME}.banner
echo -en "\n\n" >> ${NAME}.banner
echo -e "* Note: Please use ${boldwhite}${NAME}.banner${clear} for information on this new build. Leave the %DATE% though for autobuilds!"

echo -e "${boldwhite}"
echo "Setup complete. Created new build: ${NAME}"
echo "Note: Use ${NAME}.banner for information on this new build. Leave the %DATE% though for autobuilds!"
echo -e "${clear}"

exit $?