599 lines
18 KiB
Bash
Executable file
599 lines
18 KiB
Bash
Executable file
#!/usr/bin/env bash
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set -o pipefail
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#set -x
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RED='\033[0;31m'
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BLUE='\033[0;34m'
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GREEN='\033[0;32m'
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YELLOW='\033[0;33m'
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NC='\033[0m'
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SILENT="false"
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DOCKER_MODE="false"
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CROWDSEC_RUN_DIR="/var/run"
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CROWDSEC_LIB_DIR="/var/lib/crowdsec"
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CROWDSEC_USR_DIR="/usr/local/lib/crowdsec"
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CROWDSEC_DATA_DIR="${CROWDSEC_LIB_DIR}/data"
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CROWDSEC_DB_PATH="${CROWDSEC_DATA_DIR}/crowdsec.db"
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CROWDSEC_PATH="/etc/crowdsec"
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CROWDSEC_CONFIG_PATH="${CROWDSEC_PATH}"
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CROWDSEC_LOG_FILE="/var/log/crowdsec.log"
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CROWDSEC_BIN="./cmd/crowdsec/crowdsec"
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CSCLI_BIN="./cmd/crowdsec-cli/cscli"
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CLIENT_SECRETS="local_api_credentials.yaml"
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LAPI_SECRETS="online_api_credentials.yaml"
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BIN_INSTALL_PATH="/usr/local/bin"
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CROWDSEC_BIN_INSTALLED="${BIN_INSTALL_PATH}/crowdsec"
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CSCLI_BIN_INSTALLED="${BIN_INSTALL_PATH}/cscli"
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ACQUIS_PATH="${CROWDSEC_CONFIG_PATH}"
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TMP_ACQUIS_FILE="tmp-acquis.yaml"
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ACQUIS_TARGET="${ACQUIS_PATH}/acquis.yaml"
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PID_DIR="${CROWDSEC_RUN_DIR}"
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SYSTEMD_PATH_FILE="/etc/systemd/system/crowdsec.service"
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PATTERNS_FOLDER="config/patterns"
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PATTERNS_PATH="${CROWDSEC_CONFIG_PATH}/patterns/"
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ACTION=""
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DEBUG_MODE="false"
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SUPPORTED_SERVICES='apache2
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nginx
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sshd
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mysql
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telnet
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smb
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'
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BACKUP_DIR=$(mktemp -d)
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rm -rf $BACKUP_DIR
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log_info() {
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msg=$1
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date=$(date +%x:%X)
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echo -e "[${date}][${BLUE}INF${NC}] crowdsec_wizard: ${msg}"
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}
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log_err() {
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msg=$1
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date=$(date +%x:%X)
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echo -e "[${date}][${RED}ERR${NC}] crowdsec_wizard: ${msg}" 1>&2
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}
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log_dbg() {
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if [[ ${DEBUG_MODE} == "true" ]]; then
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msg=$1
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date=$(date +%x:%X)
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echo -e "[${date}][${YELLOW}DBG${NC}] crowdsec_wizard: ${msg}" 1>&2
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fi
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}
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detect_services () {
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DETECTED_SERVICES=()
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HMENU=()
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#list systemd services
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SYSTEMD_SERVICES=`systemctl --state=enabled list-unit-files '*.service' | cut -d ' ' -f1`
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#raw ps
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PSAX=`ps ax -o comm=`
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for SVC in ${SUPPORTED_SERVICES} ; do
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log_info "Checking if service '${SVC}' is running (ps+systemd)"
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for SRC in "${SYSTEMD_SERVICES}" "${PSAX}" ; do
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echo ${SRC} | grep ${SVC} >/dev/null
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if [ $? -eq 0 ]; then
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DETECTED_SERVICES+=(${SVC})
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HMENU+=(${SVC} "on")
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log_info "Found '${SVC}' running"
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break;
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fi;
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done;
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done;
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if [[ ${OSTYPE} == "linux-gnu" ]]; then
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DETECTED_SERVICES+=("linux")
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HMENU+=("linux" "on")
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else
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log_info "NOT A LINUX"
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fi;
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if [[ ${SILENT} == "false" ]]; then
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#we put whiptail results in an array, notice the dark magic fd redirection
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DETECTED_SERVICES=($(whiptail --separate-output --noitem --ok-button Continue --title "Services to monitor" --checklist "Detected services, uncheck to ignore. Ignored services won't be monitored." 18 70 10 ${HMENU[@]} 3>&1 1>&2 2>&3))
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if [ $? -eq 1 ]; then
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log_err "user bailed out at services selection"
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exit 1;
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fi;
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echo "Detected services (interactive) : ${DETECTED_SERVICES[@]}"
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else
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echo "Detected services (unattended) : ${DETECTED_SERVICES[@]}"
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fi;
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}
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declare -A log_input_tags
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log_input_tags[apache2]='type: apache2'
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log_input_tags[nginx]='type: nginx'
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log_input_tags[sshd]='type: syslog'
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log_input_tags[rsyslog]='type: syslog'
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log_input_tags[telnet]='type: telnet'
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log_input_tags[mysql]='type: mysql'
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log_input_tags[smb]='type: smb'
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log_input_tags[linux]="type: syslog"
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declare -A log_locations
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log_locations[apache2]='/var/log/apache2/*.log,/var/log/*httpd*.log'
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log_locations[nginx]='/var/log/nginx/*.log'
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log_locations[sshd]='/var/log/auth.log,/var/log/sshd.log,/var/log/secure'
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log_locations[rsyslog]='/var/log/syslog'
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log_locations[telnet]='/var/log/telnetd*.log'
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log_locations[mysql]='/var/log/mysql/error.log'
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log_locations[smb]='/var/log/samba*.log'
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log_locations[linux]='/var/log/syslog,/var/log/kern.log,/var/log/messages'
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#$1 is service name, such those in SUPPORTED_SERVICES
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find_logs_for() {
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ret=""
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x=${1}
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#we have trailing and starting quotes because of whiptail
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SVC="${x%\"}"
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SVC="${SVC#\"}"
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DETECTED_LOGFILES=()
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HMENU=()
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#log_info "Searching logs for ${SVC} : ${log_locations[${SVC}]}"
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#split the line into an array with ',' separator
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OIFS=${IFS}
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IFS=',' read -r -a a <<< "${log_locations[${SVC}]},"
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IFS=${OIFS}
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#readarray -td, a <<<"${log_locations[${SVC}]},"; unset 'a[-1]';
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for poss_path in "${a[@]}"; do
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#Split /var/log/nginx/*.log into '/var/log/nginx' and '*.log' so we can use find
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path=${poss_path%/*}
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fname=${poss_path##*/}
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candidates=`find "${path}" -type f -mtime -5 -ctime -5 -name "$fname"`
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#We have some candidates, add them
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for final_file in ${candidates} ; do
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log_info "Found logs file for '${SVC}': ${final_file}"
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DETECTED_LOGFILES+=(${final_file})
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HMENU+=(${final_file} "on")
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done;
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done;
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if [[ ${SILENT} == "false" ]]; then
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DETECTED_LOGFILES=($(whiptail --separate-output --noitem --ok-button Continue --title "Log files to process for ${SVC}" --checklist "Detected logfiles for ${SVC}, uncheck to ignore" 18 70 10 ${HMENU[@]} 3>&1 1>&2 2>&3))
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if [ $? -eq 1 ]; then
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log_err "user bailed out at log file selection"
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exit 1;
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fi;
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fi
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}
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in_array() {
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str=$1
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shift
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array=("$@")
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for element in "${array[@]}"; do
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if [[ ${str} == *${element}* ]]; then
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return 0
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fi
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done
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return 1
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}
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install_collection() {
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HMENU=()
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readarray -t AVAILABLE_COLLECTION < <(${CSCLI_BIN_INSTALLED} collections list -o raw -a)
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COLLECTION_TO_INSTALL=()
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for collect_info in "${AVAILABLE_COLLECTION[@]}"; do
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collection="$(echo ${collect_info} | cut -d " " -f1)"
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description="$(echo ${collect_info} | cut -d " " -f2-)"
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in_array $collection "${DETECTED_SERVICES[@]}"
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if [[ $? == 0 ]]; then
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HMENU+=("${collection}" "${description}" "ON")
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#in case we're not in interactive mode, assume defaults
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COLLECTION_TO_INSTALL+=(${collection})
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else
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if [[ ${collection} == "linux" ]]; then
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HMENU+=("${collection}" "${description}" "ON")
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#in case we're not in interactive mode, assume defaults
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COLLECTION_TO_INSTALL+=(${collection})
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else
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HMENU+=("${collection}" "${description}" "OFF")
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fi
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fi
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done
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if [[ ${SILENT} == "false" ]]; then
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COLLECTION_TO_INSTALL=($(whiptail --separate-output --ok-button Continue --title "Crowdsec collections" --checklist "Available collections in crowdsec, try to pick one that fits your profile. Collections contains parsers and scenarios to protect your system." 20 120 10 "${HMENU[@]}" 3>&1 1>&2 2>&3))
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if [ $? -eq 1 ]; then
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log_err "user bailed out at collection selection"
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exit 1;
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fi;
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fi;
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for collection in "${COLLECTION_TO_INSTALL[@]}"; do
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log_info "Installing collection '${collection}'"
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${CSCLI_BIN_INSTALLED} collections install "${collection}" > /dev/null 2>&1 || log_err "fail to install collection ${collection}"
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done
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${CSCLI_BIN_INSTALLED} parsers install "crowdsecurity/whitelists" > /dev/null 2>&1 || log_err "fail to install collection crowdsec/whitelists"
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if [[ ${SILENT} == "false" ]]; then
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whiptail --msgbox "Out of safety, I installed a parser called 'crowdsecurity/whitelists'. This one will prevent private IP adresses from being banned, feel free to remove it any time." 20 50
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fi
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if [[ ${SILENT} == "false" ]]; then
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whiptail --msgbox "CrowdSec alone will not block any IP address. If you want to block them, you must use a bouncer. You can find them on https://hub.crowdsec.net/" 20 50
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fi
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}
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#$1 is the service name, $... is the list of candidate logs (from find_logs_for)
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genyaml() {
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local service="${1}"
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shift
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local files=("${@}")
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echo "#Generated acquisition file - wizard.sh (service: ${service}) / files : ${files[@]}" >> ${TMP_ACQUIS_FILE}
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echo "filenames:" >> ${TMP_ACQUIS_FILE}
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for fd in ${files[@]}; do
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echo " - ${fd}" >> ${TMP_ACQUIS_FILE}
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done
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echo "labels:" >> ${TMP_ACQUIS_FILE}
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echo " "${log_input_tags[${service}]} >> ${TMP_ACQUIS_FILE}
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echo "---" >> ${TMP_ACQUIS_FILE}
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log_info "Acquisition file generated"
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}
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genacquisition() {
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log_info "Found following services : "${DETECTED_SERVICES[@]}
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for PSVG in ${DETECTED_SERVICES[@]} ; do
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find_logs_for ${PSVG}
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if [[ ${#DETECTED_LOGFILES[@]} -gt 0 ]] ; then
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genyaml ${PSVG} ${DETECTED_LOGFILES[@]}
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fi;
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done
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}
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#install crowdsec and cscli
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install_crowdsec() {
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mkdir -p "${CROWDSEC_DATA_DIR}"
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(cd config && find patterns -type f -exec install -Dm 644 "{}" "${CROWDSEC_CONFIG_PATH}/{}" \; && cd ../) || exit
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mkdir -p "${CROWDSEC_CONFIG_PATH}/scenarios" || exit
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mkdir -p "${CROWDSEC_CONFIG_PATH}/postoverflows" || exit
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mkdir -p "${CROWDSEC_CONFIG_PATH}/collections" || exit
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mkdir -p "${CROWDSEC_CONFIG_PATH}/patterns" || exit
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#tmp
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mkdir -p /tmp/data
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mkdir -p /etc/crowdsec/hub/
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install -v -m 600 -D "./config/${CLIENT_SECRETS}" "${CROWDSEC_CONFIG_PATH}" || exit
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install -v -m 600 -D "./config/${LAPI_SECRETS}" "${CROWDSEC_CONFIG_PATH}" || exit
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## end tmp
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install -v -m 644 -D ./config/config.yaml "${CROWDSEC_CONFIG_PATH}" || exit
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install -v -m 644 -D ./config/dev.yaml "${CROWDSEC_CONFIG_PATH}" || exit
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install -v -m 644 -D ./config/user.yaml "${CROWDSEC_CONFIG_PATH}" || exit
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install -v -m 644 -D ./config/acquis.yaml "${CROWDSEC_CONFIG_PATH}" || exit
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install -v -m 644 -D ./config/profiles.yaml "${CROWDSEC_CONFIG_PATH}" || exit
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install -v -m 644 -D ./config/simulation.yaml "${CROWDSEC_CONFIG_PATH}" || exit
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mkdir -p ${PID_DIR} || exit
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PID=${PID_DIR} DATA=${CROWDSEC_DATA_DIR} CFG=${CROWDSEC_CONFIG_PATH} envsubst '$CFG $PID $DATA' < ./config/user.yaml > ${CROWDSEC_CONFIG_PATH}"/user.yaml"
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if [[ ${DOCKER_MODE} == "false" ]]; then
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CFG=${CROWDSEC_CONFIG_PATH} PID=${PID_DIR} BIN=${CROWDSEC_BIN_INSTALLED} envsubst '$CFG $PID $BIN' < ./config/crowdsec.service > "${SYSTEMD_PATH_FILE}"
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fi
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install_bins
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if [[ ${DOCKER_MODE} == "false" ]]; then
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systemctl daemon-reload
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fi
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}
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update_bins() {
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log_info "Only upgrading binaries"
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delete_bins
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install_bins
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log_info "Upgrade finished"
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systemctl restart crowdsec
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}
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update_full() {
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if [[ ! -f "$CROWDSEC_BIN" ]]; then
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log_err "Crowdsec binary '$CROWDSEC_BIN' not found. Please build it with 'make build'" && exit
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fi
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if [[ ! -f "$CSCLI_BIN" ]]; then
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log_err "Cscli binary '$CSCLI_BIN' not found. Please build it with 'make build'" && exit
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fi
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log_info "Backing up existing configuration"
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${CSCLI_BIN_INSTALLED} config backup ${BACKUP_DIR}
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log_info "Saving default database content"
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cp /var/lib/crowdsec/data/crowdsec.db ${BACKUP_DIR}/crowdsec.db
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log_info "Cleanup existing crowdsec configuration"
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uninstall_crowdsec
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log_info "Installing crowdsec"
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install_crowdsec
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log_info "Restoring configuration"
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${CSCLI_BIN_INSTALLED} hub update
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${CSCLI_BIN_INSTALLED} config restore ${BACKUP_DIR}
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log_info "Restoring saved database"
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cp ${BACKUP_DIR}/crowdsec.db /var/lib/crowdsec/data/crowdsec.db
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log_info "Finished, restarting"
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systemctl restart crowdsec || log_err "Failed to restart crowdsec"
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}
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install_bins() {
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log_info "Installing crowdsec binaries"
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install -v -m 755 -D "${CROWDSEC_BIN}" "${CROWDSEC_BIN_INSTALLED}" || exit
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install -v -m 755 -D "${CSCLI_BIN}" "${CSCLI_BIN_INSTALLED}" || exit
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symlink_bins
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}
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symlink_bins() {
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if grep -q "${BIN_INSTALL_PATH}" <<< $PATH; then
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log_dbg "${BIN_INSTALL_PATH} found in PATH"
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else
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ln -s "${CSCLI_BIN_INSTALLED}" /usr/bin/cscli
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ln -s "${CROWDSEC_BIN_INSTALLED}" /usr/bin/crowdsec
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fi
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}
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delete_bins() {
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log_info "Removing crowdsec binaries"
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rm -f ${CROWDSEC_BIN_INSTALLED}
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rm -f ${CSCLI_BIN_INSTALLED}
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}
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# uninstall crowdsec and cscli
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uninstall_crowdsec() {
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systemctl stop crowdsec.service
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systemctl disable crowdsec.service
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${CSCLI_BIN} dashboard remove -f -y
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delete_bins
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# tmp
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rm -rf /tmp/data/
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## end tmp
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find /etc/crowdsec -maxdepth 1 -mindepth 1 | grep -v "bouncer" | xargs rm -rf || echo ""
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rm -f ${CROWDSEC_LOG_FILE} || echo ""
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rm -f ${CROWDSEC_DB_PATH} || echo ""
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rm -rf ${CROWDSEC_LIB_DIR} || echo ""
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rm -rf ${CROWDSEC_USR_DIR} || echo ""
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rm -f ${SYSTEMD_PATH_FILE} || echo ""
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log_info "crowdsec successfully uninstalled"
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}
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main() {
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if [[ "$1" == "backup_to_dir" ]];
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then
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backup_to_dir
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return
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fi
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if [[ "$1" == "restore_from_dir" ]];
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then
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if ! [ $(id -u) = 0 ]; then
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log_err "Please run the wizard as root or with sudo"
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exit 1
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fi
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restore_from_dir
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return
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fi
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if [[ "$1" == "binupgrade" ]];
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then
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if ! [ $(id -u) = 0 ]; then
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log_err "Please run the wizard as root or with sudo"
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exit 1
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fi
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update_bins
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return
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fi
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if [[ "$1" == "upgrade" ]];
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then
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if ! [ $(id -u) = 0 ]; then
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log_err "Please run the wizard as root or with sudo"
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exit 1
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fi
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update_full
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return
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fi
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if [[ "$1" == "uninstall" ]];
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then
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if ! [ $(id -u) = 0 ]; then
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log_err "Please run the wizard as root or with sudo"
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exit 1
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fi
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uninstall_crowdsec
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return
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fi
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if [[ "$1" == "bininstall" ]];
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then
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if ! [ $(id -u) = 0 ]; then
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log_err "Please run the wizard as root or with sudo"
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exit 1
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fi
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log_info "installing crowdsec"
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install_crowdsec
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return
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fi
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if [[ "$1" == "install" ]];
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then
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if ! [ $(id -u) = 0 ]; then
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log_err "Please run the wizard as root or with sudo"
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exit 1
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fi
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## Do make build before installing (as non--root) in order to have the binary and then install crowdsec as root
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log_info "installing crowdsec"
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install_crowdsec
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log_info "configuring ${CSCLI_BIN_INSTALLED}"
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${CSCLI_BIN_INSTALLED} hub update > /dev/null 2>&1 || (log_err "fail to update crowdsec hub. exiting" && exit 1)
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# detect running services
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detect_services
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if ! [ ${#DETECTED_SERVICES[@]} -gt 0 ] ; then
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log_err "No detected or selected services, stopping."
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exit 1
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fi;
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# Generate acquisition file and move it to the right folder
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genacquisition
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mv "${TMP_ACQUIS_FILE}" "${ACQUIS_TARGET}"
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# Install collections according to detected services
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log_info "Installing needed collections ..."
|
|
install_collection
|
|
|
|
# install patterns/ folder
|
|
log_info "Installing patterns"
|
|
mkdir -p "${PATTERNS_PATH}"
|
|
cp "./${PATTERNS_FOLDER}/"* "${PATTERNS_PATH}/"
|
|
|
|
|
|
# api register
|
|
${CSCLI_BIN_INSTALLED} machines add --force "$(cat /etc/machine-id)" --password "$(cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 32 | head -n 1)" -f "${CROWDSEC_CONFIG_PATH}/${CLIENT_SECRETS}"
|
|
log_info "Crowdsec LAPI registered"
|
|
|
|
${CSCLI_BIN_INSTALLED} capi register
|
|
log_info "Crowdsec CAPI registered"
|
|
|
|
systemctl enable crowdsec
|
|
systemctl start crowdsec
|
|
log_info "Enabling and starting crowdsec daemon"
|
|
|
|
return
|
|
fi
|
|
|
|
if [[ "$1" == "detect" ]];
|
|
then
|
|
rm -f "${TMP_ACQUIS_FILE}"
|
|
detect_services
|
|
if [[ ${DETECTED_SERVICES} == "" ]] ; then
|
|
log_err "No detected or selected services, stopping."
|
|
exit
|
|
fi;
|
|
log_info "Found ${#DETECTED_SERVICES[@]} supported services running:"
|
|
genacquisition
|
|
cat "${TMP_ACQUIS_FILE}"
|
|
rm "${TMP_ACQUIS_FILE}"
|
|
return
|
|
fi
|
|
|
|
}
|
|
|
|
usage() {
|
|
echo "Usage:"
|
|
echo " ./wizard.sh -h Display this help message."
|
|
echo " ./wizard.sh -d|--detect Detect running services and associated logs file"
|
|
echo " ./wizard.sh -i|--install Assisted installation of crowdsec/cscli and collections"
|
|
echo " ./wizard.sh --bininstall Install binaries and empty config, no wizard."
|
|
echo " ./wizard.sh --uninstall Uninstall crowdsec/cscli"
|
|
echo " ./wizard.sh --binupgrade Upgrade crowdsec/cscli binaries"
|
|
echo " ./wizard.sh --upgrade Perform a full upgrade and try to migrate configs"
|
|
echo " ./wizard.sh --unattended Install in unattended mode, no question will be asked and defaults will be followed"
|
|
echo " ./wizard.sh --docker-mode Will install crowdsec without systemd and generate random machine-id"
|
|
echo " ./wizard.sh -r|--restore Restore saved configurations from ${BACKUP_DIR} to ${CROWDSEC_CONFIG_PATH}"
|
|
echo " ./wizard.sh -b|--backup Backup existing configurations to ${BACKUP_DIR}"
|
|
|
|
exit 0
|
|
}
|
|
|
|
if [[ $# -eq 0 ]]; then
|
|
usage
|
|
fi
|
|
|
|
while [[ $# -gt 0 ]]
|
|
do
|
|
key="${1}"
|
|
case ${key} in
|
|
--uninstall)
|
|
ACTION="uninstall"
|
|
shift #past argument
|
|
;;
|
|
--binupgrade)
|
|
ACTION="binupgrade"
|
|
shift #past argument
|
|
;;
|
|
--upgrade)
|
|
ACTION="upgrade"
|
|
shift #past argument
|
|
;;
|
|
-i|--install)
|
|
ACTION="install"
|
|
shift # past argument
|
|
;;
|
|
--bininstall)
|
|
ACTION="bininstall"
|
|
shift # past argument
|
|
;;
|
|
--docker-mode)
|
|
DOCKER_MODE="true"
|
|
ACTION="bininstall"
|
|
shift # past argument
|
|
;;
|
|
-b|--backup)
|
|
ACTION="backup_to_dir"
|
|
shift # past argument
|
|
;;
|
|
-r|--restore)
|
|
ACTION="restore_from_dir"
|
|
shift # past argument
|
|
;;
|
|
-d|--detect)
|
|
ACTION="detect"
|
|
shift # past argument
|
|
;;
|
|
--unattended)
|
|
SILENT="true"
|
|
ACTION="install"
|
|
shift
|
|
;;
|
|
-v|--verbose)
|
|
DEBUG_MODE="true"
|
|
shift
|
|
;;
|
|
-h|--help)
|
|
usage
|
|
exit 0
|
|
;;
|
|
*) # unknown option
|
|
log_err "Unknown argument ${key}."
|
|
usage
|
|
exit 1
|
|
;;
|
|
esac
|
|
done
|
|
|
|
|
|
main ${ACTION}
|