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installer
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#!/usr/bin/env bash
# This is the installer script for GiBBERISH - Git and Bash Based Encrypted Remote Interactive Shell
# Author: Somajit Dey 2021 <dey.somajit@gmail.com>
# Online repository: https://github.com/SomajitDey/gibberish
# Bug reports: Raise an issue at the repository or email the author directly
# Copyright (C) 2021 Somajit Dey
# License: GPL-3.0-or-later <https://github.com/SomajitDey/gibberish>
# Disclaimer: This software comes with ABSOLUTELY NO WARRANTY; use at your own risk.
export rcfile='gibberish_rc.bash'
command -v git &>/dev/null || { echo 'Install git' ; exit 1;}
command -v curl &>/dev/null || { echo 'Install curl' ; exit 1;}
command -v flock &>/dev/null || { echo 'Install flock' ; exit 1;}
command -v gpg &>/dev/null || { echo 'Install gpg' ; exit 1;}
code_dir_relative="${BASH_SOURCE%/*}"
code_dir="$(cd "${code_dir_relative}"; echo "${PWD}" )"
. "${code_dir}/${rcfile}" || { echo "Missing ${rcfile}" ; exit 1;}
echo '
GiBBERISh requires a dedicated free Git repository hosted on cloud.
If you have already created such a repository, proceed with its URL.
If you have not created a repository yet, press ENTER below to exit
this installation. Then create an empty repository at any of the
following sites for free:
github.com, gitlab.com, sourceforge.net, bitbucket.org
Note down the URL link of your newly created repository and relaunch
this installer.
'
read -ep 'Repository URL: ' url
[[ -z "${url}" ]] && exit
uri="${url#*:\/\/}"
protocol="${url%:\/\/*}"
if [[ "${protocol}" == "file" ]] || [[ "${uri}" == "${protocol}" ]]; then
[[ -d "${uri}" ]] || { echo "No such directory" ; exit 1;}
uri="$(cd "${uri}" && pwd)" # Get the absolute path
protocol="file"
localhost="true"
fetch_url="${uri}"
push_url="${uri}"
if [[ "${uri}" == /mnt/* ]]; then
echo -e \\n"NFS is not very secure. If you want encryption, please provide a passphrase. Otherwise, simply press ENTER"
read -ep 'Passphrase: ' pass
else
pass="GiBBERISh"
fi
else
protocol="https" # Because https will be allowed by every firewall, unlike ssh://
echo -e \\n'Using https:// for git-push'
localhost="false"
domain="${uri%%\/*}"
echo -e "\nEnter your ${domain} credentials below. GIBBERISh will use this during git-push."
read -ep 'Username: ' uid
read -ep 'Passwd/PAT: ' pass
tput cuu1; tput ed; echo 'Got your passwd.'
push_url="https://${uid}:${pass}@${uri}"
echo -e \\n'Is this computer behind a firewall that blocks all non-web traffic?'
while read -p '1. Yes 2. No 3. Dunno : ' -n1 choice ; do
case "${choice}" in
2)fetch_url="git://${uri}"; break;; # Because git:// is faster
1|3)fetch_url="https://${uri}"; break;;
*)echo -e \\n'Tip: Type either 1, 2 or 3';;
esac
done
echo
fi
echo -e \\n'You shall be using this PC as'
while read -p '1. Server 2. Client : ' -n1 choice ; do
case "${choice}" in
1)config="server"; talkto="client"; break;;
2)config="client"; talkto="server"; break;;
*)echo -e \\n'Tip: Type either 1 or 2';;
esac
done
echo
if ! "${localhost}"; then
echo -e \\n'Make sure you are online. We will download your repository then and configure the upstream if needed.
Press any key to confirm.'
read -sn1
fi
echo -e \\n"Configuring ${config}..."\\n
export GIBBERISH="${config}"
GIBBERISH_filesys
rm -rf "${GIBBERISH_DIR}" # Clean previous installation
mkdir -p "${GIBBERISH_DIR}"
echo "${pass}" > "${patfile}"
git clone --quiet "${fetch_url}" "${incoming_dir}" || { echo -e \\n'Git-clone failed, exiting'; exit 1;}
cd "${incoming_dir}"
# Check if repo has atleast one commit; create a commit if there is none
git checkout --quiet "${config}" &>/dev/null || \
(git checkout --quiet -b "${config}"
git commit --allow-empty -m 'Root commit'; git push --quiet origin "${config}") || \
{ echo -e \\n'Oops, something failed. Reinstall.'; exit 1;}
# Create outgoing directory; checked out with appropriate branch
# Using the following instead of the much simpler git-worktree for backward compatibility with older Ubuntus
cp -r "${incoming_dir}" "${outgoing_dir}"
cd "${outgoing_dir}"
git remote set-url origin "${push_url}"
git config --local user.name "GiBBERISh"
git config --local user.email "gibberish@${config}"
git checkout --quiet "${talkto}" &>/dev/null || git checkout --quiet -b "${talkto}"
(touch "${iofile}"; git add "${iofile}";
git commit --allow-empty -m ':'; git push --quiet origin "${talkto}") || \
{ echo -e \\n'Oops, something failed. Reinstall with correct credentials.'; exit 1;}
cp "${code_dir}/post-commit" "${outgoing_dir}/.git/hooks/post-commit" || \
{ echo -e \\n'Missing post-commit hook. Reinstall with proper package' ; exit 1;}
if [[ "${domain}" == "github.com" ]]; then
if (command -v jq && command -v base64) &>/dev/null; then
repo="${uri##*/}"; repo="${repo%.git}"
echo "-X PUT -d @${api_payload} -u ${uid}:${pass} https://api.github.com/repos/${uid}/${repo}/contents/${iofile}" \
> "${api_options_file}"
content="\"$(cat ${outgoing_dir}/${iofile} | base64)\""
jq ".content=${content} | .branch=\"${talkto}\"" < <(echo {}) > "${api_json_template}"
else
echo -e \\n"Tip: Install the programs: 'jq' and 'base64' for decreasing latency"
fi
else
[[ "${protocol}" == https ]] && echo -e \\n"Tip: Use github.com as upstream for decreasing latency"
fi
cat <(echo "export GIBBERISH=${GIBBERISH}") "${code_dir}/${rcfile}" > "${HOME}/.${rcfile}"
run_command="source ${HOME}/.${rcfile}"
grep -q -x "${run_command}" "${HOME}/.bashrc" || (echo "${run_command}" >> "${HOME}/.bashrc")
case "${config}" in
server) echo -e \\n'Command to launch: gibberish-server';;
client) echo -e \\n'Command to launch: gibberish';;
esac
echo -e \\n"To use the above command right now, either open a new shell or terminal, or use the following command:
$run_command"