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#!/bin/bash
##############################################################################
# DO NOT MODIFY THIS FILE. Instead, modify 'helpers/custom'.
##############################################################################
COOKBOOK_NAME="$(basename $0)"
DIR="$( cd "$( dirname "$0" )" && pwd )"
#
# Run a given recipe.
#
# Arguments can be passed to the 'recipe' function. They will be accessible by
# the recipe as $2, $3, $4, etc.
#
recipe () {
CURRENT_RECIPE_NAME=$1
DEFAULT_ASSETS_PATH="$DIR/assets/default/$CURRENT_RECIPE_NAME"
COOKBOOK_ASSETS_PATH="$DIR/assets/$COOKBOOK_NAME/$CURRENT_RECIPE_NAME"
local custom_recipe="$DIR/recipes/custom/$CURRENT_RECIPE_NAME"
local default_recipe="$DIR/recipes/default/$CURRENT_RECIPE_NAME"
if [ -f $custom_recipe ]; then
log "Running recipe '$custom_recipe'..." 1
separator
. $custom_recipe
elif [ -f $default_recipe ]; then
log "Running recipe '$default_recipe'..." 1
separator
. $default_recipe
else
error "Could not find recipe for '$CURRENT_RECIPE_NAME'. Fail!"
fi
cd $DIR
}
#
# Prints the 'finished' banner.
#
finished () {
spacer 1
separator "="
echo " FINISHED: '$COOKBOOK_NAME'"
separator "="
spacer 1
}
#
# Writes a log line to the screen
#
# If specified, the first parameter is the number of empty lines to print
# before the log message.
#
# If specified, the second parameter is the number of empty lines to print
# before the log message.
#
log () {
if [[ $2 -gt 0 ]]; then
spacer $2
fi
echo " * $1"
if [[ $3 -gt 0 ]]; then
spacer $3
fi
}
#
# Writes an error log line to the screen and exit with an error code.
#
error () {
spacer 2
echo " -> $1"
spacer 2
exit 1
}
#
# Write one or many empty lines to the screen.
#
spacer () {
if [ $1 ]; then
local spaces=$1
else
local spaces=1
fi
for (( i=0; i<$spaces; i++ )) do
echo ""
done
}
#
# noop
#
noop () {
return 0
}
#
# Write a separator to the screen.
#
# You can optionally specify the separator character. Default is '-'.
#
separator () {
if [ $1 ]; then
local char=$1
else
local char='-'
fi
local width=$(tput cols)
for (( i=0; i < $width-2; i++ )) do
local output="$output$char"
done
echo $output
}
#
# Update packages in package manager.
#
package_update () {
log "Updating package manager..." 0 1
detect_package_manager
if [ "$PACKAGE_MANAGER" == 'apt-get' ]; then
apt-get update -y
elif [ "$PACKAGE_MANAGER" == 'yum' ]; then
yum check-update -y
elif [ "$PACKAGE_MANAGER" == 'brew' ]; then
brew update
else
error "Unknown package manager: $PACKAGE_MANAGER"
fi
if [ $? -ne 0 ]; then
error "An error occured while updating packages. Fail!"
else
spacer 2
fi
}
#
# Install a package through package manager
#
package () {
log "Installing package '$1'..."
detect_package_manager
test_package_installed $1 > /dev/null 2>&1
if [ $? -eq 0 ]; then
log "Package '$1' is already installed. Skipping."
return 0
fi
if [ "$PACKAGE_MANAGER" == 'apt-get' ]; then
DEBIAN_FRONTEND=noninteractive apt-get install -y $1
elif [ "$PACKAGE_MANAGER" == 'yum' ]; then
yum install -y $1
elif [ "$PACKAGE_MANAGER" == 'brew' ]; then
brew install $1
else
error "Unknown package manager: $PACKAGE_MANAGER"
fi
if [ $? -ne 0 ]; then
error "An error occured while installing package '$1'. Fail!"
else
spacer 2
fi
}
#
# Determine if a package is installed or not.
#
# If package is installed, function will return 0. If not, it will return 1.
#
test_package_installed () {
detect_package_manager
# When many packages are specified, skip test.
if [ $# -gt 1 ]; then
return 1
fi
if [ "$PACKAGE_MANAGER" == 'apt-get' ]; then
dpkg -l $1
return $?
fi
# Don't know how to detect if a package is installed with other package managers.
return 1
}
#
# Determine which package manager is in use on the system.
#
detect_package_manager () {
if [ "$PACKAGE_MANAGER" != "" ]; then
return 0
fi
if command_exist apt-get; then
PACKAGE_MANAGER='apt-get'
elif command_exist yum; then
PACKAGE_MANAGER='yum'
elif command_exist brew; then
PACKAGE_MANAGER='brew'
else
error "Could not find a package manager. Fail!"
fi
log "Detected package manager: $PACKAGE_MANAGER"
return 0
}
#
# Determines if a command exist on the system.
#
command_exist () {
command -v "$1" > /dev/null 2>&1;
}
#
# Copy a file from the assets folder to the specified location.
#
copy () {
local cookbook_assets_source="$COOKBOOK_ASSETS_PATH/$1"
local default_assets_source="$DEFAULT_ASSETS_PATH/$1"
local target=$2
if [ -f $cookbook_assets_source ]; then
log "Copying $cookbook_assets_source to $target..."
cp $cookbook_assets_source $target
elif [ -f $default_assets_source ]; then
log "Copying $default_assets_source to $target..."
cp $default_assets_source $target
else
error "Could not find '$1' to copy. Fail!"
fi
}
#
# Add a user to the system.
#
add_user () {
local user=$1
local pass=$2
local args=$3
id $user > /dev/null 2>&1
if [ $? -eq 0 ]; then
log "User $user already exists. Skipped creation."
else
log "Adding user $user..."
[ "$pass" == "" ] && pass=generate_password
if [[ "$args" != *nohome* ]]; then
/usr/sbin/useradd --password `openssl passwd -crypt $pass` --create-home $user
else
/usr/sbin/useradd --password `openssl passwd -crypt $pass` $user
fi
fi
}
#
# Generate a random password.
#
generate_password() {
local l=$1
[ "$l" == "" ] && l=8
tr -dc A-Za-z0-9_ < /dev/urandom | head -c ${l} | xargs
}
#
# Run a command as another user
#
run_as () {
local user=$1
local cmd=$2
log "Running command as '$user'..."
log "$cmd"
# sudo -u $user -H -s /bin/bash -c "$cmd"
# sudo -u $user -s /bin/bash -i "$cmd"
su -c "$cmd" -s /bin/bash $user
}
#
# Add line to a file if line is not already present
#
add_line () {
local line=$1
local file=$2
grep "$line" $file > /dev/null 2>&1
if [ $? -ne 0 ]; then
log "Adding '$line' to '$file'..."
echo "$line" >> $file
else
log "'$line' already in '$file'. Skipping."
fi
}
#
# Write a warning if user is not root.
#
warn_if_not_root () {
uid=`id -u` && [ "$uid" = "0" ] ||
{ echo "WARNING: You are NOT running this script as 'root'. You might want to consider that..."; }
}
#
# Stops the execution of the script if user is not root.
#
fail_if_not_root () {
uid=`id -u` && [ "$uid" = "0" ] ||
{ echo "You must run this as 'root'. Exiting."; exit 1; }
}
#
# Checks if a certain element has already been installed.
#
function is_installed () {
if [ $# -gt 1 ]; then
local args=$*
local name=${args// /-}
else
local name=$1
fi
if [[ -f ~/.shoestrap/installed/$name ]]; then
log "'$name' is already installed."
return 0
else
log "'$name' is not installed."
return 1
fi
}
#
# Sets an element as installed.
#
function set_installed () {
if [ $# -gt 1 ]; then
local args=$*
local name=${args// /-}
else
local name=$1
fi
mkdir -p ~/.shoestrap/installed
touch ~/.shoestrap/installed/$name
}
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