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#!/bin/bash
if (( "$#" != 1 )); then
echo "usage: download_dependencies.sh <program_name>"
exit 1
fi
is_root=0
if [ $(id -u) = 0 ]; then
is_root=1
fi
program_name="$1"
script_path=`readlink -f $0`
script_dir=`dirname $script_path`
if [ -f /usr/lib/sibs/"$program_name".cache ]; then
#echo "No need to download dependencies, all dependencies exist in cache"
exit 0
fi
if [ $is_root -eq 0 ] && [ -f ~/.local/lib/sibs/"$program_name".cache ]; then
#echo "No need to download dependencies, all dependencies exist in cache"
exit 0
fi
command -v sha1sum > /dev/null || { echo "Missing program: sha1sum"; exit 1; }
command -v wget > /dev/null || { echo "Missing program: wget"; exit 1; }
set -e
IFS=$'\n' GLOBIGNORE='*' command eval 'dependencies=($(cat "$script_dir"/dependencies.conf))'
IFS=$'\n' GLOBIGNORE='*' command eval 'urls=($(cat "$script_dir"/urls.conf))'
IFS=$'\n' GLOBIGNORE='*' command eval 'libmaps=($(cat "$script_dir"/libmap.conf))'
if (( "${#dependencies[@]}" % 2 != 0 )); then
echo "Invalid number of arguments in dependencies.conf file. Expected multiple libraries which are the dependencies, followed by their checksum"
exit 4
fi
program_libs_dir=""
if [ $is_root -eq 0 ]; then
mkdir -p ~/.local/lib/sibs
program_libs_dir=~/.local/lib/sibs/"$program_name"
else
mkdir -p /usr/lib/sibs
program_libs_dir=/usr/lib/sibs/"$program_name"
fi
mkdir -p "$program_libs_dir"
set +e
echoerr() { echo "$@" 1>&2; }
for (( i=0; i<${#dependencies[@]}; i=$i+2 ))
do
file=${dependencies[i]}
checksum_file="$file".sha1
checksum=${dependencies[i+1]}
if [ -f /usr/lib/sibs/"$file" ] && [ "$checksum" == "$(cat /usr/lib/sibs/$checksum_file)" ]; then
echoerr "Using sibs global lib file $file"
elif [ $is_root -eq 0 ] && [ -f ~/.local/lib/sibs/"$file" ] && [ "$checksum" == "$(cat ~/.local/lib/sibs/$checksum_file)" ]; then
echoerr "Using sibs user lib file $file"
elif [ -f /usr/lib/"$file" ] && echo "$checksum" /usr/lib/"$file" | sha1sum -c --status; then
echoerr "Using system lib file $file"
set -e
if [ $is_root -eq 0 ]; then
cp /usr/lib/"$file" ~/.local/lib/sibs/"$file"
echo "$checksum" > ~/.local/lib/sibs/"$checksum_file"
else
cp /usr/lib/"$file" /usr/lib/sibs/"$file"
echo "$checksum" > /usr/lib/sibs/"$checksum_file"
fi
set +e
else
downloaded=0
for url in "${urls[@]}"; do
dst_dir=""
if [ $is_root -eq 0 ]; then
dst_dir=~/.local/lib/sibs
else
dst_dir=/usr/lib/sibs
fi
echoerr "Downloading missing library from ${url}${file}"
if wget -q -O "$dst_dir/$file" "$url""$file"; then
echo "$checksum" > "$dst_dir/$checksum_file"
downloaded=1
break
fi
done
if [ $downloaded -eq 0 ]; then
echo "Failed to download dependency $file from all urls"
exit 2
fi
fi
done
for (( i=0; i<${#libmaps[@]}; i=$i+2 ))
do
src=${libmaps[i]}
dst=${libmaps[i+1]}
lib_file=""
if [ -f /usr/lib/sibs/"$src" ]; then
lib_file=/usr/lib/sibs/"$src"
elif [ $is_root -eq 0 ] && [ -f ~/.local/lib/sibs/"$src" ]; then
lib_file=~/.local/lib/sibs/"$src"
elif [ -f /usr/lib/"$src" ]; then
lib_file=/usr/lib/"$src"
fi
#echo "Creating symlink for lib file $dst"
ln -sf "$lib_file" "$program_libs_dir/$dst"
if [ $? -ne 0 ]; then
echo "Failed to create symlink for program"
exit 3
fi
done
set -e
if [ $is_root -eq 0 ]; then
touch ~/.local/lib/sibs/"$program_name".cache
else
touch /usr/lib/sibs/"$program_name".cache
fi
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