telebit.js/usr/share/installer/get.sh

81 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:-}
rm -rf my-tmp-runner.sh
$_my_http_get $_my_http_opts $_my_http_out my-tmp-runner.sh "$_http_url"; bash my-tmp-runner.sh $my_args; rm my-tmp-runner.sh
}
detect_http_get
export http_get
export http_bash
###############################
## END HTTP_GET ##
###############################
if [ -e "usr/share/installer/install.sh" ]; then
bash usr/share/installer/install.sh "$@"
else
http_bash https://git.coolaj86.com/coolaj86/telebit.js/raw/branch/master/usr/share/installer/install.sh "$@"
fi