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|
#!/bin/sh
#
# Download and run the latest release version of the Certbot client.
#
# NOTE: THIS SCRIPT IS AUTO-GENERATED AND SELF-UPDATING
#
# IF YOU WANT TO EDIT IT LOCALLY, *ALWAYS* RUN YOUR COPY WITH THE
# "--no-self-upgrade" FLAG
#
# IF YOU WANT TO SEND PULL REQUESTS, THE REAL SOURCE FOR THIS FILE IS
# letsencrypt-auto-source/letsencrypt-auto.template AND
# letsencrypt-auto-source/pieces/bootstrappers/*
set -e # Work even if somebody does "sh thisscript.sh".
# Note: you can set XDG_DATA_HOME or VENV_PATH before running this script,
# if you want to change where the virtual environment will be installed
# HOME might not be defined when being run through something like systemd
if [ -z "$HOME" ]; then
HOME=~root
fi
if [ -z "$XDG_DATA_HOME" ]; then
XDG_DATA_HOME=~/.local/share
fi
if [ -z "$VENV_PATH" ]; then
# We export these values so they are preserved properly if this script is
# rerun with sudo/su where $HOME/$XDG_DATA_HOME may have a different value.
export OLD_VENV_PATH="$XDG_DATA_HOME/letsencrypt"
export VENV_PATH="/opt/eff.org/certbot/venv"
fi
VENV_BIN="$VENV_PATH/bin"
BOOTSTRAP_VERSION_PATH="$VENV_PATH/certbot-auto-bootstrap-version.txt"
LE_AUTO_VERSION="{{ LE_AUTO_VERSION }}"
BASENAME=$(basename $0)
USAGE="Usage: $BASENAME [OPTIONS]
A self-updating wrapper script for the Certbot ACME client. When run, updates
to both this script and certbot will be downloaded and installed. After
ensuring you have the latest versions installed, certbot will be invoked with
all arguments you have provided.
Help for certbot itself cannot be provided until it is installed.
--debug attempt experimental installation
-h, --help print this help
-n, --non-interactive, --noninteractive run without asking for user input
--no-bootstrap do not install OS dependencies
--no-self-upgrade do not download updates
--os-packages-only install OS dependencies and exit
-v, --verbose provide more output
-q, --quiet provide only update/error output;
implies --non-interactive
All arguments are accepted and forwarded to the Certbot client when run."
export CERTBOT_AUTO="$0"
for arg in "$@" ; do
case "$arg" in
--debug)
DEBUG=1;;
--os-packages-only)
OS_PACKAGES_ONLY=1;;
--no-self-upgrade)
# Do not upgrade this script (also prevents client upgrades, because each
# copy of the script pins a hash of the python client)
NO_SELF_UPGRADE=1;;
--no-bootstrap)
NO_BOOTSTRAP=1;;
--help)
HELP=1;;
--noninteractive|--non-interactive|renew)
ASSUME_YES=1;;
--quiet)
QUIET=1;;
--verbose)
VERBOSE=1;;
-[!-]*)
OPTIND=1
while getopts ":hnvq" short_arg $arg; do
case "$short_arg" in
h)
HELP=1;;
n)
NONINTERACTIVE=1;;
q)
QUIET=1;;
v)
VERBOSE=1;;
esac
done;;
esac
done
if [ $BASENAME = "letsencrypt-auto" ]; then
# letsencrypt-auto does not respect --help or --yes for backwards compatibility
ASSUME_YES=1
HELP=0
fi
# Set ASSUME_YES to 1 if QUIET or NONINTERACTIVE
if [ "$QUIET" = 1 -o "$NONINTERACTIVE" = 1 ]; then
ASSUME_YES=1
fi
say() {
if [ "$QUIET" != 1 ]; then
echo "$@"
fi
}
error() {
echo "$@"
}
# Support for busybox and others where there is no "command",
# but "which" instead
if command -v command > /dev/null 2>&1 ; then
export EXISTS="command -v"
elif which which > /dev/null 2>&1 ; then
export EXISTS="which"
else
error "Cannot find command nor which... please install one!"
exit 1
fi
# Certbot itself needs root access for almost all modes of operation.
# certbot-auto needs root access to bootstrap OS dependencies and install
# Certbot at a protected path so it can be safely run as root. To accomplish
# this, this script will attempt to run itself as root if it doesn't have the
# necessary privileges by using `sudo` or falling back to `su` if it is not
# available. The mechanism used to obtain root access can be set explicitly by
# setting the environment variable LE_AUTO_SUDO to 'sudo', 'su', 'su_sudo',
# 'SuSudo', or '' as used below.
# Because the parameters in `su -c` has to be a string,
# we need to properly escape it.
SuSudo() {
args=""
# This `while` loop iterates over all parameters given to this function.
# For each parameter, all `'` will be replace by `'"'"'`, and the escaped string
# will be wrapped in a pair of `'`, then appended to `$args` string
# For example, `echo "It's only 1\$\!"` will be escaped to:
# 'echo' 'It'"'"'s only 1$!'
# │ │└┼┘│
# │ │ │ └── `'s only 1$!'` the literal string
# │ │ └── `\"'\"` is a single quote (as a string)
# │ └── `'It'`, to be concatenated with the strings following it
# └── `echo` wrapped in a pair of `'`, it's totally fine for the shell command itself
while [ $# -ne 0 ]; do
args="$args'$(printf "%s" "$1" | sed -e "s/'/'\"'\"'/g")' "
shift
done
su root -c "$args"
}
# Sets the environment variable SUDO to be the name of the program or function
# to call to get root access. If this script already has root privleges, SUDO
# is set to an empty string. The value in SUDO should be run with the command
# to called with root privileges as arguments.
SetRootAuthMechanism() {
SUDO=""
if [ -n "${LE_AUTO_SUDO+x}" ]; then
case "$LE_AUTO_SUDO" in
SuSudo|su_sudo|su)
SUDO=SuSudo
;;
sudo)
SUDO="sudo -E"
;;
'') ;; # Nothing to do for plain root method.
*)
error "Error: unknown root authorization mechanism '$LE_AUTO_SUDO'."
exit 1
esac
say "Using preset root authorization mechanism '$LE_AUTO_SUDO'."
else
if test "`id -u`" -ne "0" ; then
if $EXISTS sudo 1>/dev/null 2>&1; then
SUDO="sudo -E"
else
say \"sudo\" is not available, will use \"su\" for installation steps...
SUDO=SuSudo
fi
fi
fi
}
if [ "$1" = "--cb-auto-has-root" ]; then
shift 1
elif [ "$1" != "--le-auto-phase2" ]; then
# if $1 is --le-auto-phase2, we've executed this branch before
SetRootAuthMechanism
if [ -n "$SUDO" ]; then
echo "Requesting to rerun $0 with root privileges..."
$SUDO "$0" --cb-auto-has-root "$@"
exit 0
fi
fi
BootstrapMessage() {
# Arguments: Platform name
say "Bootstrapping dependencies for $1... (you can skip this with --no-bootstrap)"
}
ExperimentalBootstrap() {
# Arguments: Platform name, bootstrap function name
if [ "$DEBUG" = 1 ]; then
if [ "$2" != "" ]; then
BootstrapMessage $1
$2
fi
else
error "FATAL: $1 support is very experimental at present..."
error "if you would like to work on improving it, please ensure you have backups"
error "and then run this script again with the --debug flag!"
error "Alternatively, you can install OS dependencies yourself and run this script"
error "again with --no-bootstrap."
exit 1
fi
}
DeprecationBootstrap() {
# Arguments: Platform name, bootstrap function name
if [ "$DEBUG" = 1 ]; then
if [ "$2" != "" ]; then
BootstrapMessage $1
$2
fi
else
error "WARNING: certbot-auto support for this $1 is DEPRECATED!"
error "Please visit certbot.eff.org to learn how to download a version of"
error "Certbot that is packaged for your system. While an existing version"
error "of certbot-auto may work currently, we have stopped supporting updating"
error "system packages for your system. Please switch to a packaged version"
error "as soon as possible."
exit 1
fi
}
DeterminePythonVersion() {
for LE_PYTHON in "$LE_PYTHON" python2.7 python27 python2 python; do
# Break (while keeping the LE_PYTHON value) if found.
$EXISTS "$LE_PYTHON" > /dev/null && break
done
if [ "$?" != "0" ]; then
error "Cannot find any Pythons; please install one!"
exit 1
fi
export LE_PYTHON
PYVER=`"$LE_PYTHON" -V 2>&1 | cut -d" " -f 2 | cut -d. -f1,2 | sed 's/\.//'`
if [ "$PYVER" -lt 26 ]; then
error "You have an ancient version of Python entombed in your operating system..."
error "This isn't going to work; you'll need at least version 2.6."
exit 1
fi
}
{{ bootstrappers/deb_common.sh }}
{{ bootstrappers/rpm_common.sh }}
{{ bootstrappers/suse_common.sh }}
{{ bootstrappers/arch_common.sh }}
{{ bootstrappers/gentoo_common.sh }}
{{ bootstrappers/free_bsd.sh }}
{{ bootstrappers/mac.sh }}
{{ bootstrappers/smartos.sh }}
{{ bootstrappers/mageia_common.sh }}
# Set Bootstrap to the function that installs OS dependencies on this system
# and BOOTSTRAP_VERSION to the unique identifier for the current version of
# that function. If Bootstrap is set to a function that doesn't install any
# packages (either because --no-bootstrap was included on the command line or
# we don't know how to bootstrap on this system), BOOTSTRAP_VERSION is not set.
if [ "$NO_BOOTSTRAP" = 1 ]; then
Bootstrap() {
:
}
elif [ -f /etc/debian_version ]; then
Bootstrap() {
BootstrapMessage "Debian-based OSes"
BootstrapDebCommon
}
BOOTSTRAP_VERSION="BootstrapDebCommon $BOOTSTRAP_DEB_COMMON_VERSION"
elif [ -f /etc/mageia-release ]; then
# Mageia has both /etc/mageia-release and /etc/redhat-release
Bootstrap() {
ExperimentalBootstrap "Mageia" BootstrapMageiaCommon
}
BOOTSTRAP_VERSION="BootstrapMageiaCommon $BOOTSTRAP_MAGEIA_COMMON_VERSION"
elif [ -f /etc/redhat-release ]; then
Bootstrap() {
BootstrapMessage "RedHat-based OSes"
BootstrapRpmCommon
}
BOOTSTRAP_VERSION="BootstrapRpmCommon $BOOTSTRAP_RPM_COMMON_VERSION"
elif [ -f /etc/os-release ] && `grep -q openSUSE /etc/os-release` ; then
Bootstrap() {
BootstrapMessage "openSUSE-based OSes"
BootstrapSuseCommon
}
BOOTSTRAP_VERSION="BootstrapSuseCommon $BOOTSTRAP_SUSE_COMMON_VERSION"
elif [ -f /etc/arch-release ]; then
Bootstrap() {
if [ "$DEBUG" = 1 ]; then
BootstrapMessage "Archlinux"
BootstrapArchCommon
else
error "Please use pacman to install letsencrypt packages:"
error "# pacman -S certbot certbot-apache"
error
error "If you would like to use the virtualenv way, please run the script again with the"
error "--debug flag."
exit 1
fi
}
BOOTSTRAP_VERSION="BootstrapArchCommon $BOOTSTRAP_ARCH_COMMON_VERSION"
elif [ -f /etc/manjaro-release ]; then
Bootstrap() {
ExperimentalBootstrap "Manjaro Linux" BootstrapArchCommon
}
BOOTSTRAP_VERSION="BootstrapArchCommon $BOOTSTRAP_ARCH_COMMON_VERSION"
elif [ -f /etc/gentoo-release ]; then
Bootstrap() {
DeprecationBootstrap "Gentoo" BootstrapGentooCommon
}
BOOTSTRAP_VERSION="BootstrapGentooCommon $BOOTSTRAP_GENTOO_COMMON_VERSION"
elif uname | grep -iq FreeBSD ; then
Bootstrap() {
DeprecationBootstrap "FreeBSD" BootstrapFreeBsd
}
BOOTSTRAP_VERSION="BootstrapFreeBsd $BOOTSTRAP_FREEBSD_VERSION"
elif uname | grep -iq Darwin ; then
Bootstrap() {
DeprecationBootstrap "macOS" BootstrapMac
}
BOOTSTRAP_VERSION="BootstrapMac $BOOTSTRAP_MAC_VERSION"
elif [ -f /etc/issue ] && grep -iq "Amazon Linux" /etc/issue ; then
Bootstrap() {
ExperimentalBootstrap "Amazon Linux" BootstrapRpmCommon
}
BOOTSTRAP_VERSION="BootstrapRpmCommon $BOOTSTRAP_RPM_COMMON_VERSION"
elif [ -f /etc/product ] && grep -q "Joyent Instance" /etc/product ; then
Bootstrap() {
ExperimentalBootstrap "Joyent SmartOS Zone" BootstrapSmartOS
}
BOOTSTRAP_VERSION="BootstrapSmartOS $BOOTSTRAP_SMARTOS_VERSION"
else
Bootstrap() {
error "Sorry, I don't know how to bootstrap Certbot on your operating system!"
error
error "You will need to install OS dependencies, configure virtualenv, and run pip install manually."
error "Please see https://letsencrypt.readthedocs.org/en/latest/contributing.html#prerequisites"
error "for more info."
exit 1
}
fi
# Sets PREV_BOOTSTRAP_VERSION to the identifier for the bootstrap script used
# to install OS dependencies on this system. PREV_BOOTSTRAP_VERSION isn't set
# if it is unknown how OS dependencies were installed on this system.
SetPrevBootstrapVersion() {
if [ -f $BOOTSTRAP_VERSION_PATH ]; then
PREV_BOOTSTRAP_VERSION=$(cat "$BOOTSTRAP_VERSION_PATH")
# The list below only contains bootstrap version strings that existed before
# we started writing them to disk.
#
# DO NOT MODIFY THIS LIST UNLESS YOU KNOW WHAT YOU'RE DOING!
elif grep -Fqx "$BOOTSTRAP_VERSION" << "UNLIKELY_EOF"
BootstrapDebCommon 1
BootstrapMageiaCommon 1
BootstrapRpmCommon 1
BootstrapSuseCommon 1
BootstrapArchCommon 1
BootstrapGentooCommon 1
BootstrapFreeBsd 1
BootstrapMac 1
BootstrapSmartOS 1
UNLIKELY_EOF
then
# If there's no bootstrap version saved to disk, but the currently selected
# bootstrap script is from before we started saving the version number,
# return the currently selected version to prevent us from rebootstrapping
# unnecessarily.
PREV_BOOTSTRAP_VERSION="$BOOTSTRAP_VERSION"
fi
}
TempDir() {
mktemp -d 2>/dev/null || mktemp -d -t 'le' # Linux || macOS
}
if [ "$1" = "--le-auto-phase2" ]; then
# Phase 2: Create venv, install LE, and run.
shift 1 # the --le-auto-phase2 arg
SetPrevBootstrapVersion
INSTALLED_VERSION="none"
if [ -d "$VENV_PATH" ]; then
# If the selected Bootstrap function isn't a noop and it differs from the
# previously used version
if [ -n "$BOOTSTRAP_VERSION" -a "$BOOTSTRAP_VERSION" != "$PREV_BOOTSTRAP_VERSION" ]; then
# if non-interactive mode or stdin and stdout are connected to a terminal
if [ \( "$NONINTERACTIVE" = 1 \) -o \( \( -t 0 \) -a \( -t 1 \) \) ]; then
rm -rf "$VENV_PATH"
"$0" "$@"
exit 0
else
error "Skipping upgrade because new OS dependencies may need to be installed."
error
error "To upgrade to a newer version, please run this script again manually so you can"
error "approve changes or with --non-interactive on the command line to automatically"
error "install any required packages."
# Set INSTALLED_VERSION to be the same so we don't update the venv
INSTALLED_VERSION="$LE_AUTO_VERSION"
fi
elif [ -f "$VENV_BIN/letsencrypt" ]; then
# --version output ran through grep due to python-cryptography DeprecationWarnings
# grep for both certbot and letsencrypt until certbot and shim packages have been released
INSTALLED_VERSION=$("$VENV_BIN/letsencrypt" --version 2>&1 | grep "^certbot\|^letsencrypt" | cut -d " " -f 2)
if [ -z "$INSTALLED_VERSION" ]; then
error "Error: couldn't get currently installed version for $VENV_BIN/letsencrypt: " 1>&2
"$VENV_BIN/letsencrypt" --version
exit 1
fi
fi
fi
if [ "$LE_AUTO_VERSION" != "$INSTALLED_VERSION" ]; then
say "Creating virtual environment..."
DeterminePythonVersion
rm -rf "$VENV_PATH"
if [ "$VERBOSE" = 1 ]; then
virtualenv --no-site-packages --python "$LE_PYTHON" "$VENV_PATH"
else
virtualenv --no-site-packages --python "$LE_PYTHON" "$VENV_PATH" > /dev/null
fi
if [ -n "$BOOTSTRAP_VERSION" ]; then
echo "$BOOTSTRAP_VERSION" > "$BOOTSTRAP_VERSION_PATH"
elif [ -n "$PREV_BOOTSTRAP_VERSION" ]; then
echo "$PREV_BOOTSTRAP_VERSION" > "$BOOTSTRAP_VERSION_PATH"
fi
say "Installing Python packages..."
TEMP_DIR=$(TempDir)
trap 'rm -rf "$TEMP_DIR"' EXIT
# There is no $ interpolation due to quotes on starting heredoc delimiter.
# -------------------------------------------------------------------------
cat << "UNLIKELY_EOF" > "$TEMP_DIR/letsencrypt-auto-requirements.txt"
{{ dependency-requirements.txt }}
{{ letsencrypt-requirements.txt }}
{{ certbot-requirements.txt }}
UNLIKELY_EOF
# -------------------------------------------------------------------------
cat << "UNLIKELY_EOF" > "$TEMP_DIR/pipstrap.py"
{{ pipstrap.py }}
UNLIKELY_EOF
# -------------------------------------------------------------------------
# Set PATH so pipstrap upgrades the right (v)env:
PATH="$VENV_BIN:$PATH" "$VENV_BIN/python" "$TEMP_DIR/pipstrap.py"
set +e
if [ "$VERBOSE" = 1 ]; then
"$VENV_BIN/pip" install --disable-pip-version-check --no-cache-dir --require-hashes -r "$TEMP_DIR/letsencrypt-auto-requirements.txt"
else
PIP_OUT=`"$VENV_BIN/pip" install --disable-pip-version-check --no-cache-dir --require-hashes -r "$TEMP_DIR/letsencrypt-auto-requirements.txt" 2>&1`
fi
PIP_STATUS=$?
set -e
if [ "$PIP_STATUS" != 0 ]; then
# Report error. (Otherwise, be quiet.)
error "Had a problem while installing Python packages."
if [ "$VERBOSE" != 1 ]; then
error
error "pip prints the following errors: "
error "====================================================="
error "$PIP_OUT"
error "====================================================="
error
error "Certbot has problem setting up the virtual environment."
if `echo $PIP_OUT | grep -q Killed` || `echo $PIP_OUT | grep -q "allocate memory"` ; then
error
error "Based on your pip output, the problem can likely be fixed by "
error "increasing the available memory."
else
error
error "We were not be able to guess the right solution from your pip "
error "output."
fi
error
error "Consult https://certbot.eff.org/docs/install.html#problems-with-python-virtual-environment"
error "for possible solutions."
error "You may also find some support resources at https://certbot.eff.org/support/ ."
fi
rm -rf "$VENV_PATH"
exit 1
fi
if [ -d "$OLD_VENV_PATH" -a ! -L "$OLD_VENV_PATH" ]; then
rm -rf "$OLD_VENV_PATH"
ln -s "$VENV_PATH" "$OLD_VENV_PATH"
fi
say "Installation succeeded."
fi
"$VENV_BIN/letsencrypt" "$@"
else
# Phase 1: Upgrade certbot-auto if necessary, then self-invoke.
#
# Each phase checks the version of only the thing it is responsible for
# upgrading. Phase 1 checks the version of the latest release of
# certbot-auto (which is always the same as that of the certbot
# package). Phase 2 checks the version of the locally installed certbot.
if [ ! -f "$VENV_BIN/letsencrypt" ]; then
if [ -z "$OLD_VENV_PATH" -o ! -f "$OLD_VENV_PATH/bin/letsencrypt" ]; then
if [ "$HELP" = 1 ]; then
echo "$USAGE"
exit 0
fi
# If it looks like we've never bootstrapped before, bootstrap:
Bootstrap
fi
fi
if [ "$OS_PACKAGES_ONLY" = 1 ]; then
say "OS packages installed."
exit 0
fi
if [ "$NO_SELF_UPGRADE" != 1 ]; then
TEMP_DIR=$(TempDir)
trap 'rm -rf "$TEMP_DIR"' EXIT
# ---------------------------------------------------------------------------
cat << "UNLIKELY_EOF" > "$TEMP_DIR/fetch.py"
{{ fetch.py }}
UNLIKELY_EOF
# ---------------------------------------------------------------------------
DeterminePythonVersion
if ! REMOTE_VERSION=`"$LE_PYTHON" "$TEMP_DIR/fetch.py" --latest-version` ; then
error "WARNING: unable to check for updates."
elif [ "$LE_AUTO_VERSION" != "$REMOTE_VERSION" ]; then
say "Upgrading certbot-auto $LE_AUTO_VERSION to $REMOTE_VERSION..."
# Now we drop into Python so we don't have to install even more
# dependencies (curl, etc.), for better flow control, and for the option of
# future Windows compatibility.
"$LE_PYTHON" "$TEMP_DIR/fetch.py" --le-auto-script "v$REMOTE_VERSION"
# Install new copy of certbot-auto.
# TODO: Deal with quotes in pathnames.
say "Replacing certbot-auto..."
# Clone permissions with cp. chmod and chown don't have a --reference
# option on macOS or BSD, and stat -c on Linux is stat -f on macOS and BSD:
cp -p "$0" "$TEMP_DIR/letsencrypt-auto.permission-clone"
cp "$TEMP_DIR/letsencrypt-auto" "$TEMP_DIR/letsencrypt-auto.permission-clone"
# Using mv rather than cp leaves the old file descriptor pointing to the
# original copy so the shell can continue to read it unmolested. mv across
# filesystems is non-atomic, doing `rm dest, cp src dest, rm src`, but the
# cp is unlikely to fail if the rm doesn't.
mv -f "$TEMP_DIR/letsencrypt-auto.permission-clone" "$0"
fi # A newer version is available.
fi # Self-upgrading is allowed.
"$0" --le-auto-phase2 "$@"
fi
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