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automate_tomcat.sh
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automate_tomcat.sh
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#!/bin/bash
MIRROR_URL='https://ftp.fau.de/apache/tomcat/tomcat-8/'
SIGN_URL='https://downloads.apache.org/tomcat/tomcat-8/'
TOMCAT_USER="${TOMCAT_USER:-tomcat}"
TOMCAT_GROUP="${TOMCAT_GROUP:-tomcat}"
CURL="/usr/bin/curl"
# terminal is per default verbose
VERBOSE=${VERBOSE:-false}
tty -s && VERBOSE=true
declare _sysVersion=""
declare _webVersion=""
FORCE=false
INIT=false
CLEANME=${CLEANME:-false}
# This is where all *downloaded* tomcat version resides before installing the bin # and lib part
DL_DIR=${DR_DIR:-/var/lib/tomcats/}
# here it is where they will be copied to (could be linked to /var/lib/tomcat8)
CATALINA_BASE=${CATALINA_BASE:-/usr/share/tomcat8}
CATALINA_HOME=$CATALINA_BASE
# Installation eventually takes place in /usr/share/tomcat8 (similar but not 1:1 as CentOS/RHEL 7):
# (SELinux attritbutes aren't supplied by this script, yet)
#
# host:/usr/share/tomcat 0# ls -alZ | sed 's/system_u:object_r//'
# drwxrwxr-x. root tomcat :usr_t:s0 .
# drwxr-xr-x. root root :usr_t:s0 ..
# drwxr-xr-x. root root :bin_t:s0 bin
# lrwxrwxrwx. root tomcat :usr_t:s0 conf -> /etc/tomcat
# lrwxrwxrwx. root tomcat :lib_t:s0 lib -> /usr/share/java/tomcat
# lrwxrwxrwx. root tomcat :usr_t:s0 logs -> /var/log/tomcat
# lrwxrwxrwx. root tomcat :usr_t:s0 temp -> /var/cache/tomcat/temp
# lrwxrwxrwx. root tomcat :usr_t:s0 webapps -> /var/lib/tomcat/webapps
# lrwxrwxrwx. root tomcat :usr_t:s0 work -> /var/cache/tomcat/work
# host:/usr/share/tomcat 0# ls -lLZ | sed 's/system_u:object_r//'
# drwxr-xr-x. root root :bin_t:s0 bin
# drwxr-xr-x. root tomcat :etc_t:s0 conf
# drwxr-xr-x. root root :usr_t:s0 lib
# drwxrwx---. tomcat root :tomcat_log_t:s0 logs
# drwxrwx---. root tomcat :tomcat_cache_t:s0 temp
# drwxrwxr-x. root tomcat :tomcat_var_lib_t:s0 webapps
# drwxrwx---. root tomcat :tomcat_cache_t:s0 work
# host:/usr/share/tomcat 0#
#
# See also https://de.wikipedia.org/wiki/Apache_Tomcat#Verzeichnisstruktur)
#
install_dirs() {
mkdir -m 775 $CATALINA_BASE
mkdir -p -m 755 ${CATALINA_BASE}/{bin,lib}
mkdir -p -m 755 /etc/tomcat8
mkdir -p -m 770 /var/log/tomcat8 /var/cache/tomcat8/temp /var/cache/tomcat8/work
mkdir -p -m 775 /var/lib/tomcat8/webapps
chgrp $TOMCAT_GROUP $CATALINA_BASE /var/cache/tomcat8/temp /var/cache/tomcat8/work /var/lib/tomcat8/webapps
chown $TOMCAT_USER /var/log/tomcat8
ln -sn /etc/tomcat8 ${CATALINA_BASE}/conf
ln -sn /var/log/tomcat8 ${CATALINA_BASE}/logs
ln -sn /var/cache/tomcat8/temp ${CATALINA_BASE}/
ln -sn /var/lib/tomcat8/webapps ${CATALINA_BASE}/
ln -sn /var/cache/tomcat8/work ${CATALINA_BASE}/
mkdir -m 775 /etc/tomcat8/Catalina
mkdir -m 755 /etc/tomcat8/conf.d
chgrp -R $TOMCAT_GROUP /etc/tomcat8
return 0
}
chacls_files() {
# ensure
chgrp -R $TOMCAT_GROUP /etc/tomcat8
# files:
find /etc/tomcat8 -type f | xargs chmod 644
chmod 640 /etc/tomcat8/{tomcat-users.xml,web.xml,server.xml}
chmod 644 ${CATALINA_BASE}/{bin,lib}/*
chmod 755 ${CATALINA_BASE}/bin/*
return 0
}
cleanup_dirs() {
"$VERBOSE" && echo "remove all dirs ..."
rm -rf $DL_DIR /var/lib/tomcat8
rm -rf /etc/tomcat8
rm -rf /var/log/tomcat8 /var/cache/tomcat8/temp /var/cache/tomcat8/work /var/lib/tomcat8/webapps
# some safety measure:
[[ -d "$CATALINA_BASE" ]] && [[ "$CATALINA_BASE" =~ tomcat ]] && rm -rf "$CATALINA_BASE"
if grep -q ':18888:0:99999:7:::' /etc/shadow && grep -q 'x:53:53:Apache Tomcat' /etc/passwd; then
"$VERBOSE" && echo "remove previously created tomcat accounts"
username=$(awk -F':' '/:18888:0:99999:7:::/ { print $1 }' /etc/shadow)
[[ -n "$username" ]] && userdel "$username"
groupname=$(awk -F':' '/:x:53:/ { print $1 }' /etc/group)
[[ -n "$groupname" ]] && groupdel "$groupname"
else
"$VERBOSE" && echo "no previously created tomcat accounts found"
fi
"$CLEANME" && rm $0
return 0
}
error() {
local msg="$1"
local exitcode="${2:-0}"
echo -e "\nFatal: $msg\n" 1>&2
exit $exitcode
}
check_tomcat_ids() {
local tmp=""
if ! getent passwd $TOMCAT_USER >/dev/null 2>&1; then
echo -n "Tomcat user \"$TOMCAT_USER\" doesn't exist"
tmp=$(awk -F':' '/tomcat/ { print $1 }' /etc/passwd| tail -1)
#FIXME: on one system there were tomcat7 and tomcat8
if [[ -n "$tmp" ]]; then
export TOMCAT_USER="$tmp"
echo "... using existing $TOMCAT_USER"
else
# userid seems to work on debian, ubuntu, centos, rhel, suse
echo "$TOMCAT_USER:x:53:53:Apache Tomcat:/usr/share/tomcat:/sbin/nologin" >>/etc/passwd
echo "$TOMCAT_USER:*:18888:0:99999:7:::" >>/etc/shadow
echo "... created user $TOMCAT_USER"
fi
fi
if ! getent group $TOMCAT_GROUP >/dev/null 2>&1; then
echo -n "Tomcat group \"$TOMCAT_GROUP\" doesn't exist"
tmp=$(awk -F':' '/tomcat/ { print $1 }' /etc/group| tail -1)
#FIXME: on one system there were tomcat7 and tomcat8
if [[ -n "$tmp" ]]; then
export TOMCAT_GROUP="$tmp"
echo "... using existing $TOMCAT_GROUP"
else
# userid seems to work on debian, ubuntu, centos, rhel, suse
echo "$TOMCAT_GROUP:x:53:" >>/etc/group
echo "... created group $TOMCAT_GROUP"
fi
fi
return 0
}
check_new_version() {
local tmp=""
local version=""
if ! $CURL -s -I $MIRROR_URL >/dev/null ; then
if env | grep -iEq 'http_proxy|https_proxy' ; then
error "Curl connect problem to $MIRROR_URL" 2
else
error "Curl connect problem to $MIRROR_URL. Did you forget to define a proxy?" 2
fi
fi
$CURL -s -I $MIRROR_URL >/dev/null || error "Curl connect problem to $MIRROR_URL" 2
tmp="$($CURL -so - $MIRROR_URL | grep -E -o 'v8.5.[0-9]{1,3}' | sort -u | tail -1)"
if [[ $(wc -l <<< "$tmp") -ne 1 ]]; then
error "Please check version @ $MIRROR_URL.\n I was not able determine the latest one for sure" 2
fi
version="${tmp//v/}"
[[ ! "$version" =~ 8.5.[0-9]{1,3} ]] && error "Please check version @ $MIRROR_URL.\n Does not look like a 8.5.xx version" 2
echo "$version"
}
determine_system_version() {
local latest=""
cd "$DL_DIR" 2>/dev/null
if [[ $? -ne 0 ]]; then
error "Was not able to cd to $DL_DIR. Make sure it exists" 3
fi
latest="$(ls -d apache-tomcat-8.5.* 2>/dev/null | sort -n | tail -1)"
echo "$latest"
}
download() {
local version="$1"
local trail_url=""
local signing_key=""
"$VERBOSE" && echo -en "Downloading version $_webVersion ... "
trail_url="v${version}/bin/"
$CURL -so apache-tomcat-${version}.tar.gz $MIRROR_URL/${trail_url}/apache-tomcat-${version}.tar.gz || \
error "Download binary from $MIRROR_URL." 1
$CURL -so apache-tomcat-${version}.tar.gz.asc $SIGN_URL/${trail_url}/apache-tomcat-${version}.tar.gz.asc || \
error "Download signature from $SIGN_URL." 1
"$VERBOSE" && echo "success"
# Get signing key --> it maybe has to be deployed before if autoretrieval is not enabled / possible
# So we verify it's is there
signing_key=$(gpg --verify apache-tomcat-${version}.tar.gz.asc apache-tomcat-${version}.tar.gz 2>&1 | awk '/using.*key/ { print $NF }')
gpg --list-key $signing_key 2>&1 >/dev/null
[[ $? -ne 0 ]] && error "Please install PGP signer key $signing_key" 8
"$VERBOSE" && echo -n "Verify downloaded $_webVersion (PGP)... "
gpg --verify apache-tomcat-${version}.tar.gz.asc apache-tomcat-${version}.tar.gz 2>/dev/null || \
error "Signature of apache-tomcat-${version}.tar.gz couldn't be verified" 3
"$VERBOSE" && echo "success"
return 0
}
extract_update() {
f="$1"
cd "$DL_DIR" 2>/dev/null || error "Was not able to cd to $DL_DIR" 2
"$VERBOSE" && echo -n "extracting version $(basename $f) to $DL_DIR ..."
tar xzf $f || error "Was not able to extract $f into $DL_DIR" 4
"$VERBOSE" && echo " success"
return 0
}
copy2destination() {
local srcdir="$1"
local init="$2"
cd "$srcdir/bin/" 2>/dev/null || error "Was not able to cd to $srcdir/bin/" 2
"$VERBOSE" && echo -n "upgrade binaries ..."
cp -f * "${CATALINA_BASE}/bin/" || error "Was not able to copy from $srcdir/bin/ into ${CATALINA_BASE}/bin/ " 5
"$VERBOSE" && echo " success"
cd "$srcdir/lib/" || error "Was not able to cd to $srcdir/lib/" 2
"$VERBOSE" && echo -n "upgrade libraries ..."
cp -f * "${CATALINA_BASE}/lib/" || error "Was not able to copy from $srcdir/lib/ into ${CATALINA_BASE}/lib/ " 5
"$VERBOSE" && echo " success"
if [[ "$init" =~ init ]]; then
# we copy the conf files also when cmd line == init
cd "$srcdir/conf/" 2>/dev/null || error "Was not able to cd to $srcdir/conf/" 2
"$VERBOSE" && echo -n "Copy standard config files. keeping existing ones ..."
cp -n * "${CATALINA_BASE}/conf/" || error "Was not able to copy from $srcdir/conf/ into ${CATALINA_BASE}/conf/ " 5
"$VERBOSE" && echo " success"
fi
return 0
}
set_custom_acls() {
if [[ ! -e "${CATALINA_BASE}/conf/db.conf" ]]; then
return 0
fi
"$VERBOSE" && echo "ensure proper Unix ACLs for db.* ..."
chmod 640 "${CATALINA_BASE}/conf/db.conf" "${CATALINA_BASE}/conf/db.key"
chown $TOMCAT_USER:$TOMCAT_GROUP "${CATALINA_BASE}/conf/db.conf" "${CATALINA_BASE}/conf/db.key"
return 0
}
help() {
cat << EOF
Syntax:
$0 <OPTION>
where OPTION is one of
--help what you are loooking at
--check checks the latest already downloaded version against the one available from Apache
(return code 11 means: you're running an old version)
--update you have a working installation previously generated by this script and you want to
update the installation. Config files won't get overwritten
--init bare Tomcat installation from Apache web site. Adds a tomcat user/group if not available.
After this need to supply the webapp and edit config files
--force force installation, all files will NOT be overwritten
--remove ATTENTION: dangerous: it wipes the whole tomcat installation off the disk
and removes any added tomcat user/group.
Using a terminal the default is to get status info what the program is doing. When you use
--check in a cronjob, and if you're behind the actual release a notification will be sent
to the specified (cron) mail recipient.
Use it at your own risk. Usage without any warranty. It's recommended to backup
your files before usage.
EOF
}
##### main #####
[[ ! -x $CURL ]] && error "$CURL not found or not executable\n" 1
CURL="$CURL --connect-timeout 10"
if [[ $# -gt 1 ]] || [[ $# -eq 0 ]] ; then
help
exit 1;
fi
if [[ "$1" =~ ^(--check|--init|--update|--force)$ ]]; then
[[ $(whoami) == root ]] || error "Please run this script as root" 1
umask 0002
fi
case $1 in
--help)
help
exit 0
;;
--remove)
# Better be safe than sorry (catch empty var):
[[ -z "$DL_DIR" ]] && error "$DL_DIR empty" 255
cleanup_dirs
exit 0
;;
--force)
FORCE=true
;;
--update)
;;
--init)
INIT=true
[[ ! -d $DL_DIR ]] && mkdir -m 700 /var/lib/tomcats/
;;
--check)
# Otherwise we can't exit from a subshell
set -o errexit
_sysVersion=$(determine_system_version)
if [[ ${#_sysVersion} -eq 0 ]] ; then
echo "There's no previously downloaded version"
else
_sysVersion="${_sysVersion//apache-tomcat-/}"
fi
_webVersion=$(check_new_version)
set +o errexit
if [[ "$_webVersion" == $_sysVersion ]]; then
"$VERBOSE" && echo "Latest downloaded version is $_sysVersion"
"$VERBOSE" && echo "Latest version from Apache is $_webVersion"
exit 0
else
echo "Latest downloaded version is $_sysVersion"
echo "Latest version from Apache is $_webVersion"
# This also signals an update is needed
exit 11
fi
;;
*) help
exit 1
;;
esac
# Otherwise we can't exit from a subshell
set -o errexit
_sysVersion=$(determine_system_version)
set +o errexit
if [[ ${#_sysVersion} -eq 0 ]] ; then
if "$INIT"; then
_sysVersion=init
else
error "There doesn't seem to be tomcat in $DL_DIR.\nRerun \"$0\" with parameter init" 3
fi
else
_sysVersion="${_sysVersion//apache-tomcat-/}"
"$VERBOSE" && echo "Latest downloaded version available is $_sysVersion"
fi
set -o errexit
"$VERBOSE" && echo -n "Check latest version available for download ..."
_webVersion=$(check_new_version)
set +o errexit
"$VERBOSE" && echo " $_webVersion"
if [[ "$_webVersion" == $_sysVersion ]]; then
if "$FORCE"; then
echo "continue forced download"
else
if "$VERBOSE"; then
echo -e "\nno download/upgrade necessary\n"
exit 0
fi
fi
fi
_tempdir="$(mktemp -d "/tmp/$(basename $0 .sh).XXXXXXX")"
cd $_tempdir || error " making temp dir mktemp" 1
download $_webVersion $_tempdir
check_tomcat_ids
install_dirs 2>/dev/null
# install_dirs
extract_update "$_tempdir/apache-tomcat-${_webVersion}.tar.gz"
copy2destination "$DL_DIR/apache-tomcat-${_webVersion}" "$1"
# no need to change file acls as they have been retained when we don't start from stretch
[[ "$1" =~ init ]] && chacls_files
set_custom_acls
if [[ "$_sysVersion" == init ]]; then
echo -e "\nSuccessfully installed Tomcat $_webVersion"
else
echo -e "\nSuccessfully upgraded Tomcat $_sysVersion to $_webVersion"
echo "(don't forget to restart tomcat manually)"
fi
exit 0
# vim:tw=95:ts=5:sw=5:expandtab