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INSTALL.sh
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INSTALL.sh
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#!/bin/bash
set -e
REQUIRED_OPENSSL_VERSION="1.0.1"
REQUIRED_PIP_VERSION="7.0.0"
BREW_USER="unknown"
DEVELOP=false
if [[ "$1" == 'develop' ]]; then
DEVELOP=true
fi
abort_install() {
warn "Aborting the install. If you want to install prerequisites"
warn "manually, see PREREQUISITES.rst."
exit 0;
}
warn() {
echo "$@" 1>&2;
}
trim() {
# has the side effect of trimming whitespace
echo "$@" | xargs
}
get_ok_to_upgrade() {
warn "This script may install or upgrade the following software:"
warn " - brew";
warn " - openssl";
warn " - libffi"
warn " - python and pip";
warn " - libimobiledevice and related utilities";
read -p "Okay to continue? [Y/n]" -n 1 -r
warn " "
warn " "
if [[ $REPLY =~ ^[Nn]$ ]]; then
abort_install
fi
}
# given arguments like 1.0.2e, 3, returns "2"
get_version_part() {
local version=$1
local part=$2
echo $version | cut -f $part -d '.' | sed 's/[^0-9]//g'
}
check_version() {
local required=$1;
local given=$2;
local i
for i in 1 2 3; do
local required_part=$(get_version_part $required $i);
local given_part=$(get_version_part $given $i);
if [[ $given_part -lt $required_part ]]; then
return 1;
fi
done;
return 0;
}
exists() {
# warn "checking for existence of $1"
which $1 > /dev/null
}
openssl_version_ok() {
local openssl_path=$1
warn "Trying to check if $openssl_path openssl version is okay..."
if [[ -e $openssl_path ]]; then
local openssl_version=$($openssl_path version | cut -f 2 -d ' ');
warn "Found $openssl_path version $openssl_version."
if check_version $REQUIRED_OPENSSL_VERSION $openssl_version; then
warn "$openssl_path version looks okay."
return 0;
fi
fi
warn "$openssl_path version was not okay!"
return 1;
}
setup_brew() {
if exists brew; then
warn "You seem to have brew."
else
# This is what https://brew.sh recommends...
# Installing straight from a URL? What could go wrong?
local homebrew_install_url="https://raw.githubusercontent.com/Homebrew/install/master/install"
warn "We need to install brew..."
warn "Okay to install via ruby script at this URL?"
warn " $homebrew_install_url";
warn " "
read -p "Okay to continue? [Y/n]" -n 1 -r
warn " "
warn " "
if [[ $REPLY =~ ^[Nn]$ ]]; then
abort_install
fi
ruby -e "$(curl -fsSL $homebrew_install_url)";
fi
# which user owns the Cellar? We'll need this to install things...
BREW_USER=$(stat -f '%Su' `brew --cellar`)
warn "brew's stuff seems to be owned by $BREW_USER..."
return 0;
}
# Commands that write to brew's Cellar need to not be root
brew_write() {
local command=$1
local package=$2
if [[ $EUID -eq 0 ]]; then
sudo -u $BREW_USER brew $command $package
else
brew $command $package
fi
}
# some brew packages have this in machine readable form
# but not all :(
brew_get_flags() {
local package=$1
local flags=$2
brew info $package | grep $flags | awk '{print $2}'
}
# check if a program is managed by brew
# it might be a symlink like /usr/local/bin/openssl, pointing to somewhere in the Cellar
is_brew_program() {
readlink `which $1` | grep `brew --prefix` >/dev/null;
}
mac_setup_openssl() {
# warn "start mac_setup_openssl"
# if the currently installed openssl doesn't meet our requirements,
# install or upgrade with brew
local openssl_path=$(which openssl)
if [[ -n $openssl_path ]]; then
if ! openssl_version_ok $openssl_path; then
brew_setup_openssl
fi
fi
# At this point, the openssl version is okay. It may or may not
# be a brew installed program. If it is, set up some compilation
# library paths. We append to $LDFLAGS and $CPPFLAGS because some other
# things put flags in there too.
if is_brew_program openssl; then
openssl_ldflags=$(brew_get_flags openssl LDFLAGS)
export LDFLAGS=$(trim "$LDFLAGS $openssl_ldflags")
openssl_cppflags=$(brew_get_flags openssl CPPFLAGS)
export CPPFLAGS=$(trim "$CPPFLAGS $openssl_cppflags")
# Some stackoverflow answers use this too?
export CFLAGS=$CPPFLAGS
fi
return 0;
}
brew_setup_openssl() {
# So now we know there either wasn't an openssl, or it wasn't
# a version good enough. Time for brew!
# is the brew openssl installed? if not, install
brew_openssl_path=$(brew list openssl | grep -e '/openssl$')
# warn "brew openssl path = $brew_openssl_path"
if [[ -z $brew_openssl_path ]]; then
warn "Installing openssl..."
brew_write install openssl
brew_openssl_path=$(brew list openssl | grep -e '/openssl$')
fi
# warn "brew openssl path = $brew_openssl_path"
# is the brew openssl the right version? if not, upgrade
if ! openssl_version_ok $brew_openssl_path; then
warn "Upgrading openssl..."
brew_write upgrade openssl
brew_openssl_path=$(brew list openssl | grep -e '/openssl$')
fi
# warn "okay by now $brew_openssl_path should be an acceptable openssl"
# for various reasons, brew will refuse to simultaneously
# be root and link the brew openssl binary somewhere useful.
# So we do it manually. We assume that the brew --prefix will be
# in the user's $PATH, and will take precedence over system openssl.
brew_link_path=$(brew --prefix)/bin/openssl
# warn "brew link path is $brew_link_path"
if [[ -e brew_link_path ]]; then
# warn "removing existing link"
rm brew_link_path;
fi
warn "Linking $brew_openssl_path $brew_link_path."
ln -s $brew_openssl_path $brew_link_path
# let's see if we succeeded: the openssl in our path should now be ready!
new_openssl_path=$(which openssl)
# warn "new path is $new_openssl_path"
if ! openssl_version_ok $new_openssl_path; then
warn "We tried to install an openssl >$MINIMUM_OPENSSL_VERSION, but we failed."
warn "Check if $brew_link_path is in your \$PATH ($PATH)."
return 1
fi
# warn "success, finally"
return 0;
}
mac_setup_libffi() {
warn "Checking for libffi..."
if ! brew list libffi 2>/dev/null >/dev/null; then
warn "Nope, no libffi. Installing..."
brew_write install libffi
fi
# set up some compilation library paths (we'll need it later...)
local libffi_ldflags=$(brew_get_flags libffi LDFLAGS)
export LDFLAGS=$(trim "$LDFLAGS $libffi_ldflags")
}
mac_setup_python() {
if exists pip; then
pip_version=$(pip --version | awk '{ print $2 }')
if check_version $REQUIRED_PIP_VERSION $pip_version; then
warn "pip version $pip_version looks okay."
return 0;
fi
fi
brew_write install python
}
mac_setup_libimobiledevice() {
if exists ideviceinstaller; then
return 0;
fi
brew_write install libimobiledevice
}
mac_setup() {
get_ok_to_upgrade
setup_brew
mac_setup_openssl
mac_setup_libffi
mac_setup_python
mac_setup_libimobiledevice
}
linux_setup() {
apt-get install ideviceinstaller
apt-get install libimobiledevice-utils
}
unamestr=`uname`
if [[ "$unamestr" == 'Darwin' ]]; then
mac_setup
elif [[ "$unamestr" == 'Linux' ]]; then
linux_setup
else
warn "Sorry, I don't know how to install on $unamestr.";
exit 1;
fi;
echo "--- Flags ---"
echo "LDFLAGS=$LDFLAGS"
echo "CPPFLAGS=$CPPFLAGS"
echo "CFLAGS=$CFLAGS"
echo
if [[ "$DEVELOP" == true ]]; then
python setup.py develop
else
python setup.py install
fi