telebit.js/usr/share/install.sh

82 lines
1.9 KiB
Bash

#!/bin/bash
#<pre><code>
# This script does exactly 3 things for 1 good reason:
#
# What this does:
#
# 1. Detects either curl or wget and wraps them in helpers
# 2. Exports the helpers for the real installer
# 3. Downloads and runs the real installer
#
# Why
#
# 1. 'curl <smth> | bash -- some args here` breaks interactive input
# See https://stackoverflow.com/questions/16854041/bash-read-is-being-skipped-when-run-from-curl-pipe
#
# 2. It also has practical risks of running a partially downloaded script, which could be dangeresque
# See https://news.ycombinator.com/item?id=12767636
set -e
set -u
###############################
# #
# http_get #
# boilerplate for curl / wget #
# #
###############################
# See https://git.coolaj86.com/coolaj86/snippets/blob/master/bash/http-get.sh
export _my_http_get=""
export _my_http_opts=""
export _my_http_out=""
detect_http_get()
{
set +e
if type -p curl >/dev/null 2>&1; then
_my_http_get="curl"
_my_http_opts="-fsSL"
_my_http_out="-o"
elif type -p wget >/dev/null 2>&1; then
_my_http_get="wget"
_my_http_opts="--quiet"
_my_http_out="-O"
else
echo "Aborted, could not find curl or wget"
return 7
fi
set -e
}
http_get()
{
$_my_http_get $_my_http_opts $_my_http_out "$2" "$1"
touch "$2"
}
http_bash()
{
_http_url=$1
my_args=${2:-}
my_tmp=$(mktemp)
$_my_http_get $_my_http_opts $_my_http_out "$my_tmp" "$_http_url"; bash "$my_tmp" $my_args; rm "$my_tmp"
}
detect_http_get
export -f http_get
export -f http_bash
###############################
## END HTTP_GET ##
###############################
TELEBIT_VERSION=${TELEBIT_VERSION:-master}
if [ -e "usr/share/install_helper.sh" ]; then
bash usr/share/install_helper.sh "$@"
else
http_bash https://git.coolaj86.com/coolaj86/telebit.js/raw/branch/$TELEBIT_VERSION/usr/share/install_helper.sh "$@"
fi