diff options
author | Costa Tsaousis (ktsaou) <costa@tsaousis.gr> | 2017-02-12 16:52:47 +0200 |
---|---|---|
committer | Costa Tsaousis (ktsaou) <costa@tsaousis.gr> | 2017-02-12 16:52:47 +0200 |
commit | 5d7a955f1ba6d6c6b1408a53eb628c60a6a3f519 (patch) | |
tree | 6c4c451f083ae91816695b3f21fa64b1038ce259 /installer | |
parent | 7647a12b03d31e90cc2edd1546132bc0be973766 (diff) |
colorful netdata-installer.sh; splitted certain functions for adding makeself; netdata-uninstaller.sh and netdata-updater.sh are now generated even when netdata-installer is called with --dont-start-it
Diffstat (limited to 'installer')
-rw-r--r-- | installer/functions.sh | 307 |
1 files changed, 307 insertions, 0 deletions
diff --git a/installer/functions.sh b/installer/functions.sh new file mode 100644 index 0000000000..5c81f88b5f --- /dev/null +++ b/installer/functions.sh @@ -0,0 +1,307 @@ +# no shebang necessary - this is a library to be sourced + +# ----------------------------------------------------------------------------- +# checking the availability of commands + +which_cmd() { + which "${1}" 2>/dev/null || \ + command -v "${1}" 2>/dev/null +} + +check_cmd() { + which_cmd "${1}" >/dev/null 2>&1 && return 0 + return 1 +} + + +# ----------------------------------------------------------------------------- + +setup_terminal() { + # Is stderr on the terminal? If not, then fail + test -t 2 || return 1 + + if [ ! -z "$TPUT_CMD" ] + then + if [ $[$($TPUT_CMD colors 2>/dev/null)] -ge 8 ] + then + # Enable colors + COLOR_RESET="\e[0m" + COLOR_BLACK="\e[30m" + COLOR_RED="\e[31m" + COLOR_GREEN="\e[32m" + COLOR_YELLOW="\e[33m" + COLOR_BLUE="\e[34m" + COLOR_PURPLE="\e[35m" + COLOR_CYAN="\e[36m" + COLOR_WHITE="\e[37m" + COLOR_BGBLACK="\e[40m" + COLOR_BGRED="\e[41m" + COLOR_BGGREEN="\e[42m" + COLOR_BGYELLOW="\e[43m" + COLOR_BGBLUE="\e[44m" + COLOR_BGPURPLE="\e[45m" + COLOR_BGCYAN="\e[46m" + COLOR_BGWHITE="\e[47m" + COLOR_BOLD="\e[1m" + COLOR_DIM="\e[2m" + COLOR_UNDERLINED="\e[4m" + COLOR_BLINK="\e[5m" + COLOR_INVERTED="\e[7m" + fi + fi + + return 0 +} +TPUT_CMD="$(which_cmd tput)" +setup_terminal + +progress() { + printf >&2 " --- ${COLOR_DIM}${COLOR_BOLD}${*}${COLOR_RESET} --- \n" +} + +# ----------------------------------------------------------------------------- + +netdata_banner() { + local l1=" ^" \ + l2=" |.-. .-. .-. .-. .-. .-. .-. .-. .-. .-. .-. .-. .-" \ + l3=" | '-' '-' '-' '-' '-' '-' '-' '-' '-' '-' '-' '-' " \ + l4=" +----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+--->" \ + sp=" " \ + netdata="netdata" start end msg="${*}" chartcolor="${COLOR_DIM}" + + [ ${#msg} -lt ${#netdata} ] && msg="${msg}${sp:0:$(( ${#netdata} - ${#msg}))}" + [ ${#msg} -gt $(( ${#l2} - 20 )) ] && msg="${msg:0:$(( ${#l2} - 23 ))}..." + + start="$(( ${#l2} / 2 - 4 ))" + [ $(( start + ${#msg} + 4 )) -gt ${#l2} ] && start=$((${#l2} - ${#msg} - 4)) + end=$(( ${start} + ${#msg} + 4 )) + + echo >&2 + echo >&2 -e "${chartcolor}${l1}${COLOR_RESET}" + echo >&2 -e "${chartcolor}${l2:0:start}${sp:0:2}${COLOR_RESET}${COLOR_BOLD}${COLOR_GREEN}${netdata}${COLOR_RESET}${chartcolor}${sp:0:$((end - start - 2 - ${#netdata}))}${l2:end:$((${#l2} - end))}${COLOR_RESET}" + echo >&2 -e "${chartcolor}${l3:0:start}${sp:0:2}${COLOR_RESET}${COLOR_BOLD}${COLOR_CYAN}${msg}${COLOR_RESET}${chartcolor}${sp:0:2}${l3:end:$((${#l2} - end))}${COLOR_RESET}" + echo >&2 -e "${chartcolor}${l4}${COLOR_RESET}" + echo >&2 +} + +# ----------------------------------------------------------------------------- +# portable service command + +service_cmd="$(which_cmd service)" +systemctl_cmd="$(which_cmd systemctl)" +service() { + local cmd="${1}" action="${2}" + + if [ ! -z "${service_cmd}" ] + then + run "${service_cmd}" "${cmd}" "${action}" + return $? + elif [ ! -z "${systemctl_cmd}" ] + then + run "${systemctl_cmd}" "${action}" "${cmd}" + return $? + fi + return 1 +} + +# ----------------------------------------------------------------------------- + +run_logfile="/dev/null" +run() { + local user="${USER}" dir="$(basename "${PWD}")" info info_console + + if [ "${UID}" = "0" ] + then + info="[root ${dir}]# " + info_console="[${COLOR_DIM}${dir}${COLOR_RESET}]# " + else + info="[${user} ${dir}]$ " + info_console="[${COLOR_DIM}${dir}${COLOR_RESET}]$ " + fi + + printf >> "${run_logfile}" "${info}" + printf >> "${run_logfile}" "%q " "${@}" + printf >> "${run_logfile}" " ... " + + printf >&2 "${info_console}${COLOR_BOLD}${COLOR_YELLOW}" + printf >&2 "%q " "${@}" + printf >&2 "${COLOR_RESET}\n" + + "${@}" + + local ret=$? + if [ ${ret} -ne 0 ] + then + printf >&2 "${COLOR_BGRED}${COLOR_WHITE}${COLOR_BOLD} FAILED ${COLOR_RESET}\n\n" + printf >> "${run_logfile}" "FAILED with exit code ${ret}\n" + else + printf >&2 "${COLOR_BGGREEN}${COLOR_WHITE}${COLOR_BOLD} OK ${COLOR_RESET}\n\n" + printf >> "${run_logfile}" "OK\n" + fi + + return ${ret} +} + +portable_add_user() { + local username="${1}" + + getent passwd "${username}" > /dev/null 2>&1 + [ $? -eq 0 ] && return 0 + + echo >&2 "Adding ${username} user account ..." + + local nologin="$(which nologin 2>/dev/null || command -v nologin 2>/dev/null || echo '/bin/false')" + + # Linux + if check_cmd useradd + then + run useradd -r -g "${username}" -c "${username}" -s "${nologin}" -d / "${username}" && return 0 + fi + + # FreeBSD + if check_cmd pw + then + run pw useradd "${username}" -d / -g "${username}" -s "${nologin}" && return 0 + fi + + # BusyBox + if check_cmd adduser + then + run adduser -D -G "${username}" "${username}" && return 0 + fi + + echo >&2 "Failed to add ${username} user account !" + + return 1 +} + +portable_add_group() { + local groupname="${1}" + + getent group "${groupname}" > /dev/null 2>&1 + [ $? -eq 0 ] && return 0 + + echo >&2 "Adding ${groupname} user group ..." + + # Linux + if check_cmd groupadd + then + run groupadd -r "${groupname}" && return 0 + fi + + # FreeBSD + if check_cmd pw + then + run pw groupadd "${groupname}" && return 0 + fi + + # BusyBox + if check_cmd addgroup + then + run addgroup "${groupname}" && return 0 + fi + + echo >&2 "Failed to add ${groupname} user group !" + return 1 +} + +portable_add_user_to_group() { + local groupname="${1}" username="${2}" + + getent group "${groupname}" > /dev/null 2>&1 + [ $? -ne 0 ] && return 1 + + # find the user is already in the group + local users=$(getent group "${groupname}" | cut -d ':' -f 4) + if [[ ",${users}," =~ ,${username}, ]] + then + # username is already there + return 0 + else + # username is not in group + echo >&2 "Adding ${username} user to the ${groupname} group ..." + + # Linux + if check_cmd usermod + then + run usermod -a -G "${groupname}" "${username}" && return 0 + fi + + # FreeBSD + if check_cmd pw + then + run pw groupmod "${groupname}" -m "${username}" && return 0 + fi + + # BusyBox + if check_cmd addgroup + then + run addgroup "${username}" "${groupname}" && return 0 + fi + + echo >&2 "Failed to add user ${username} to group ${groupname} !" + return 1 + fi +} + +iscontainer() { + # man systemd-detect-virt + local cmd=$(which_cmd systemd-detect-virt) + if [ ! -z "${cmd}" -a -x "${cmd}" ] + then + "${cmd}" --container >/dev/null 2>&1 && return 0 + fi + + # /proc/1/sched exposes the host's pid of our init ! + # http://stackoverflow.com/a/37016302 + local pid=$( cat /proc/1/sched | head -n 1 | { IFS='(),#:' read name pid th threads; echo $pid; } ) + local p=$(( pid + 0 )) + [ ${pid} -ne 1 ] && return 0 + + # lxc sets environment variable 'container' + [ ! -z "${container}" ] && return 0 + + # docker creates /.dockerenv + # http://stackoverflow.com/a/25518345 + [ -f "/.dockerenv" ] && return 0 + + # ubuntu and debian supply /bin/running-in-container + # https://www.apt-browse.org/browse/ubuntu/trusty/main/i386/upstart/1.12.1-0ubuntu4/file/bin/running-in-container + if [ -x "/bin/running-in-container" ] + then + "/bin/running-in-container" >/dev/null 2>&1 && return 0 + fi + + return 1 +} + +issystemd() { + local pids p myns ns systemctl + + # if the directory /etc/systemd/system does not exit, it is not systemd + [ ! -d /etc/systemd/system ] && return 1 + + # if there is no systemctl command, it is not systemd + systemctl=$(which systemctl 2>/dev/null || command -v systemctl 2>/dev/null) + [ -z "${systemctl}" -o ! -x "${systemctl}" ] && return 1 + + # if pid 1 is systemd, it is systemd + [ "$(basename $(readlink /proc/1/exe) 2>/dev/null)" = "systemd" ] && return 0 + + # if systemd is not running, it is not systemd + pids=$(pidof systemd 2>/dev/null) + [ -z "${pids}" ] && return 1 + + # check if the running systemd processes are not in our namespace + myns="$(readlink /proc/self/ns/pid 2>/dev/null)" + for p in ${pids} + do + ns="$(readlink /proc/${p}/ns/pid 2>/dev/null)" + + # if pid of systemd is in our namespace, it is systemd + [ ! -z "${myns}" && "${myns}" = "${ns}" ] && return 0 + done + + # else, it is not systemd + return 1 +} |