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nxnode
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#!/bin/bash
# Free implementation of nxserver components
# Copyright (c) 2004 by Fabian Franz.
# (c) 2008-23 by Dmitry Borisov <[email protected]>
# License: GNU GPL, version 2
shopt -s extglob
SHARED_CONFS="/usr/share/freenx-server"
. $SHARED_CONFS/nxfuncs
[ "$1" = "--admin" ] && { # simple wrapper to start nxserver in admin mode
if stringinstring " nxadmin " " $(groups) "; then
/usr/bin/sudo -p "" /bin/bash -c '/usr/bin/nxserver --admin' 2>&1
exit $?
else
echo "NX> 2004 admin mode start failed"
exit 1
fi
}
#
# -----------------------------------------------------------------------------
# Various helper functions
# -----------------------------------------------------------------------------
#
nxlog() {
[ "$NX_LOG_LEVEL" != "0" ] || return
echo "$(date "+%T.%3N"): ${@/password=+([^&])&/password=*&}" >> "$nxuser_logfile"
}
cp_conv() {
# arg: <string>
# Used config vars: $COMMAND_ICONV $WIN_CP_CONVERT_CHAIN
# successively convert string charset
#local lp="$FUNCNAME ($$/$BASHPID):"; #debug
#nxlog "$lp starting with args \"$@\"" #debug
local res=${1//+/ } cp_pair cp_from cp_to;
[ -n "$COMMAND_ICONV" ] || { echo "$res"; return 1; }
for cp_pair in $WIN_CP_CONVERT_CHAIN ; do
cp_from=$(cutfn "$cp_pair" 0 '>'); [ -n "$cp_from" ] || cp_from="latin1"
cp_to=$(cutfn "$cp_pair" 1 '>'); [ -n "$cp_to" ] || cp_to="UTF-8"
res=$(echo "$res" | $COMMAND_ICONV -f $cp_from -t $cp_to)
#nxlog "$lp converting $cp_from > $cp_to == \"$res\"" #debug
done
#nxlog "$lp return res='$res'" #debug
echo "$res"
}
# =================== sqlite3 stuff =====================
declare -g sqcols_usess="session_id, status, display, type, client,\
agent_pid, cookie, tail_pid, userip, acc_ip, mmport, cupsport, smbport"
declare -g sqcols_usvcs="svc, type, status, port, share, username, pass,\
data, comp, addr"
#svc: internal service name
#type: smb-share | smb-prn | ipp-prn | media-pa | ...
#status: starting|on|stopping|off
#port: tunneled/remote port
#share: incomming share name
#data: options depended of service type eg mount dir...
#comp: remote computer name
#addr: ip address is 127.0.0.1 typically, another if remote connection used
init_usessions_db() {
local usess_cols="session_id TEXT PRIMARY KEY, status TEXT, display TEXT,\
type TEXT, client TEXT, agent_pid INT, cookie TEXT, tail_pid INT,\
userip TEXT, acc_ip TEXT, mmport INT, cupsport INT, smbport INT"
local svcs_cols="svc TEXT PRIMARY KEY, type TEXT, status TEXT, port INT,\
share TEXT, comp TEXT, addr TEXT, username TEXT, pass TEXT, data TEXT"
local qstr="CREATE TABLE IF NOT EXISTS usessions.usess($usess_cols);"
qstr+="CREATE TABLE IF NOT EXISTS usessions.usvcs($svcs_cols);"
q_dbe "$qstr"
}
# ------------------ user session (usess) control --------
usess_add() { q_row_ins "usess" "$1" "$2"; }
#usess_add() args: <col1,col2...> <val1&val2...>
usess_set() { q_rows_upd "usess" "session_id='$1'" "$2" "$3"; }
#usess_set() args: <session_id> <col1,col2...> <val1&val2...>
usess_get() { q_vals_str_get "usess" "session_id='$1'" "$2" "$3"; }
#usess_get() args: <session_id> <col1,col2...> [values_delim='&']
usess_close() {
#args: <session_id> <status>
if [ "$SESSION_LOG_CLEAN" = "1" ]; then
q_dbe "DELETE FROM usess WHERE session_id='$1';"
else
q_rows_upd "usess" "session_id='$1'" "status" "$2"
fi
}
# -------------- user services (uservices) control --------
#usvcs_add() args: <col1,col2...> <val1&val2...>
usvcs_add() { q_row_ins "usvcs" "$1" "$2"; }
#usvcs_set() args: <service> <col1,col2...> <val1&val2...>
usvcs_set() { q_rows_upd "usvcs" "svc='$1'" "$2" "$3"; }
#usvcs_get() args: <service> <col1,col2...> [values_delim='&']
usvcs_get() { q_vals_str_get "usvcs" "svc='$1'" "$2" "$3"; }
#
# -----------------------------------------------------------------------------
# Node functions module
# -----------------------------------------------------------------------------
#
sess_lport_name() {
#arg: <svc_type>
case $1 in
smb-share|smb-prn) echo "smbport";;
ipp-prn) echo "cupsport";;
media-pa) echo "mmport";;
esac
}
norm_dir() {
#args: <share_dir> [parent_dir]
# exclude potential parts to exec and set dir path from given parent_dir
local r=${1//\`/}; r=${r//\$[(\{]*[)\}]/$2}; r=${r/\.\.\//$2\/};
r=${r/\.\//$2\/}; r=${r/\~\//$2\/}
[[ "${r:0:1}" =~ [[:alnum:]] ]] && r="$2/$r"
echo "$r"
}
uservice_mounted() {
#args: <type> <service/sharename/mountpoint> [port]
local rc=0 txt="" pattern port=""
local patt_addr="127.0.0.1"; [ -n "$4" ] && patt_addr=$4
case $1 in
smb-share)
# output of mount cmd not contains mount.cifs port option value
# because we need to port arg ($3)
txt=$(env LC_ALL=C $COMMAND_MOUNT_LIST 2>/dev/null)
if stringinstring "//" "$2"; then pattern="($2)"
elif ! stringinstring "/" "$2"; then pattern="//$patt_addr/($2)"
else pattern="($2)"
fi
[ -n "$(rematchfn "$pattern" "$txt")" ] || return 1
if [ -n "$3" ]; then
port_is_listening $3 || rc=1
fi
;;
smb-prn|ipp-prn)
txt=$(env LC_ALL=C $COMMAND_LPSTAT -v 2>/dev/null)
pattern=".*$2.*//$patt_addr:("
[ -n "$3" ] && pattern+="$3)" || pattern+="$num_pattern)"
port=$(rematchfn "$pattern" "$txt"); rc=$?
[ -n "$port" ] || return $rc
port_is_listening "$port" || rc=1
;;
media-pa)
case $2 in
pa) # tunneled pa
#$COMMAND_PA --check || return 1
txt=$(env LC_ALL=C $COMMAND_PACTL list short 2>/dev/null)
pattern="server=$patt_addr:("
[ -n "$3" ] && pattern+="$3)" || pattern+="[0-9]+)"
port=$(rematchfn "$pattern" "$txt"); rc=$?
#nxlog "$1 port=$port" #debug
[ -n "$port" ] || return $rc
port_is_listening "$port" || rc=1
;;
esac
;;
esac
return $rc
}
uservice_configure() {
#args:
# smb-share <svc> <port> <username> <password> <dir> <computername>
# *-prn <svc> <port> <username> <password> <opts> <computername> <share>
# opts="model=;public=;defaultprinter="
# media-pa <svc> <port> <""> <""> <opts>
local lp="$FUNCNAME ($$/$BASHPID):";
local cmdstr optstr comp rc=0 txt errstr uri
case $1 in
smb-share)
# create/check mountpoint
mkdir -p "$6" &>/dev/null
[ -d "$6" ] || { nxlog "$lp unable to create dir='$6'"; return 1; }
local egroup=$(id -gn "$USER") tmpopts=${SMB_MOUNT_OPTIONS//,/&}
local dir_mode=$(getparam "$tmpopts" dir_mode)
dir_mode=${dir_mode:(-3)}; [ -n "$dir_mode" ] || dir_mode="700"
[ "$(stat -c %a "$6")" != "$dir_mode" ] && chown "0$dir_mode" "$6" &>/dev/null
# mount options string
optstr="uid=$USER,gid=$egroup,ip=127.0.0.1,port=$3,username=$4"
[ -n "$5" ] && optstr+=",password=$5"
[ -n "$SMB_MOUNT_OPTIONS" ] && optstr+=",$SMB_MOUNT_OPTIONS"
cmdstr="$COMMAND_SUDO $COMMAND_SMBMOUNT $2 $6 -o $optstr"
echo "$cmdstr"
;;
smb-prn|ipp-prn)
local model=$(getparam "$6" "model" "" ';')
[ "$model" = "NULL" ] && model=""
local ppdn=${2#$USER}; ppdn=${ppdn:1}; ppdn=${ppdn%#[0-9]*}
local ppdfn="$NX_PPD_DIR/$ppdn.ppd"
[ -r "$ppdfn" ] || { # ppd is not found, search for driver in CUPS
txt=$($COMMAND_LPINFO -m 2>/dev/null)
local str drv=""
[ -n "$model" ] && {
while read str; do
[[ "$str" =~ "$model" ]] && { drv="${str%% *}"; break; }
done <<< "$txt"
}
[ -n "$drv" ] || {
while read str; do
[[ "$str" =~ "$ppdn" ]] && { drv="${str%% *}"; break; }
done <<< "$txt"
}
[ -n "$drv" ] || {
nxlog "$lp '$svc'; CUPS driver for service is not found";
return 1; }
$COMMAND_PPDCAT cat "$drv" > "$ppdfn" || {
nxlog "$lp Can't save $ppdfn"; return 1; }
}
[ "${1:0:3}" = "smb" ] && \
uri="nxsmb://$4:[email protected]:$3/cifs/$8" || \
uri="ipp://$4:[email protected]:$3/printers/$8"
cmdstr="$COMMAND_SUDO $COMMAND_LPADMIN -p $svc -P $ppdfn -v $uri -E"
echo "$cmdstr"
;;
media-pa)
case $2 in
pa) # tunneled pa
local uri="127.0.0.1:$3"
# get sink and source from remote pa
local rmods=$(env LC_ALL=C $COMMAND_PACTL -s $uri list short 2>/dev/null)
[ -n "$rmods" ] || {
nxlog "$lp '$svc'; can't get module list from remote PA ($uri)";
return 1; }
local rsink=$(rematchfn "(ts_receiver)" "$rmods") #"
local rsource=$(rematchfn "(ts_sender.monitor)" "$rmods") #"
[ -n "$rsink" -a -n "$rsource" ] || {
local rinfo=$(env LC_ALL=C $COMMAND_PACTL -s $uri info 2>/dev/null)
[ -n "$rsink" ] || \
rsink=$(rematchfn "Default Sink:[[:blank:]]+(.+)" "$rinfo") #"
[ -n "$rsource" ] || \
rsource=$(rematchfn "Default Source:[[:blank:]]+(.+)" "$rinfo") #"
}
echo "$rsink $rsource"
;;
esac
;;
esac
return $rc
}
uservice_mount() {
#args:
# smb-share <svc> <port> <username> <password> <dir> <computername>
# *-prn <svc> <port> <username> <password> <opts> <computername> <share>
# media-pa <svc> <port> "" "" <mode> <computername>
local lp="$FUNCNAME ($$/$BASHPID):" rc=0 cmdstr errstr
local i ok="" step=0.25 timeo=28 #7sec
for (( i=0; i<=timeo; i++ )); do
port_is_listening $3 && { ok="1"; break; }
sleep $step"s"
done
[ -n "$ok" ] || \
{ nxlog "$lp '$svc'; port $3 is not listen after $((timeo/4))s";
return 1; }
cmdstr=$(uservice_configure "$1" "$2" "$3" "$4" "$5" "$6" "$7" "$8") || return 1
case $1 in
smb-share)
#nxlog "$lp share cmdstr='$cmdstr'" #debug
errstr=$($cmdstr 2>&1) || \
{ nxlog "$lp $2 ($3) share mount failed: $errstr"
rmdir "$6" &>/dev/null; return 1; }
nxlog "$lp $2 ($3) share mounted"
;;
smb-prn|ipp-prn)
#nxlog "$lp add printer cmdstr='$cmdstr'" #debug
errstr=$($cmdstr 2>&1) || \
{ nxlog "$lp $2 ($3) printer installing failed: $errstr"; return 1; }
# post-configure
local public=$(getparam "$6" "public" "" ';')
[ "$public" != "1" ] && {
errstr=$($COMMAND_SUDO $COMMAND_LPADMIN -p $svc -u allow:$USER,guest,root 2>&1) || \
{ nxlog "$lp $2 ($3) printer set permission failed: $errstr"; }
}
local defp=$(getparam "$6" "defaultprinter" "" ';')
[ "$defp" = "1" ] && {
errstr=$($COMMAND_SUDO $COMMAND_LPADMIN -d $svc 2>&1) || \
{ nxlog "$lp $2 ($3) printer set to default failed: $errstr"; }
}
nxlog "$lp $2 ($3) printer installed"
;;
media-pa)
if ! $COMMAND_PA --check &>/dev/null; then
$COMMAND_PA --start --exit-idle-time=-1 &>/dev/null || {
#--log-target=file:$nx_dir/pa-$3.log --log-level=4 || { #debug
nxlog "$lp '$svc' can't start local pulseaudio server";
return 1; }
# automatic null-sink will be disabled
# unload unnecessary local modules here too
local rmmods="module-always-sink module-rescue-streams module-systemd-login \
module-device-restore module-stream-restore module-card-restore \
module-default-device-restore module-switch-on-port-available \
module-udev-detect module-suspend-on-idle module-console-kit"
local txt=$($COMMAND_PACTL list short 2>/dev/null)
local midpat="([0-9]+)[[:blank:]]+" mid rmod
for rmod in $rmmods; do
mid=$(rematchfn "$midpat$rmod" "$txt") && {
$COMMAND_PACTL unload-module $mid &>/dev/null
#nxlog "$lp ! $mid" #debug
}
done
else nxlog "$lp '$svc' local pulseaudio server already started" #debug
fi
case $2 in
pa) # tunneled pa
local rsink=$(cutfn "$cmdstr" 0) rsource=$(cutfn "$cmdstr" 1)
local mname="module-tunnel-sink" opts="server=127.0.0.1:$3" oo args ok2=""
oo=$(cutfn "$6" 1 '-'); [ -n "$oo" ] && opts+=" rate=$oo"
oo=$(cutfn "$6" 2 '-'); [ -n "$oo" ] && opts+=" channels=$oo"
[ "$oo" = "1" ] && opts+=" channel_map=mono"
if [ "$rsink" != "(null)" ]; then
args="sink_name=tcl_out sink=$rsink $opts"
errstr=$($COMMAND_PACTL load-module $mname $args 2>&1)
[ $? -eq 0 ] && ok="tcl_out" || \
nxlog "$FUNCNAME ($$): $2 ($3) can't load $mname $args; '$errstr'"
[ -n "$ok" ] && $COMMAND_PACTL set-default-sink "tcl_out" &>/dev/null
else nxlog "$lp $2 ($3) can't load $name with rsink=$rsink"
fi
mname="module-tunnel-source"
if [ "$rsource" != "(null)" ]; then
args="source_name=tcl_in source=$rsource $opts"
errstr=$($COMMAND_PACTL load-module $mname $args 2>&1)
[ $? -eq 0 ] && ok2="tcl_in" || \
nxlog "$FUNCNAME ($$): $2 ($3) can't load $mname $args; '$errstr'"
[ -n "$ok2" ] && $COMMAND_PACTL set-default-source "tcl_in" &>/dev/null
else nxlog "$lp $2 ($3) can't load $name with rsource=$rsource"
fi
if [ -n "$ok" -o -n "$ok2" ]; then
nxlog "$lp $2 ($3) tunnel modules loaded: $ok $ok2"
else rc=1
fi
;;
esac
;;
esac
return $rc
}
uservice_umount() {
#args: <type> <svc/mountpoint> [data] [port]
local lp="$FUNCNAME ($$/$BASHPID):" errstr=""
local i ok="" step="0.5" ct=4
case $1 in
smb-share)
local mdir=$3 res ffl=""
if stringinstring "//" "$2"; then res="$2" # svc
elif ! stringinstring "/" "$2"; then res="//127.0.0.1/$2" # sharename
else mdir="$2" res="$2" # dir
fi
#[ -z "$mdir" ] && { # get mount dir directly
# local txt=$(LC_ALL=C mount 2>/dev/null)
# pattern="$res""[[:blank:]]+on[[:blank:]]+([^[:blank:]]+)"
# mdir=$(remathfn "$pattern" "$txt")
# nxlog "$lp share $res: given empty mount dir, loaded mdir='$mdir' "
#}
for (( i=1; i<=ct; i++ )); do
(( i>=ct/2 )) && ffl="-f"
errstr+=$($COMMAND_SUDO $COMMAND_SMBUMOUNT $ffl "$res" 2>&1) && \
{ ok="1"; break; }
sleep $step"s"
done
[ -n "$ok" ] || \
{ nxlog "$lp $res share umount failed: $errstr"; return 1; }
[ -n "$mdir" ] && [ -d "$mdir" ] && rmdir "$mdir" &>/dev/null
nxlog "$lp $res share umounted"
;;
smb-prn|ipp-prn)
for (( i=1; i<=ct; i++ )); do
errstr+=$($COMMAND_SUDO $COMMAND_LPADMIN -x "$2" 2>&1) && \
{ ok="1"; break; }
sleep $step"s"
done
[ -n "$ok" ] || \
{ nxlog "$lp $2 printer deleting failed: $errstr"; return 1; }
nxlog "$lp $2 printer deleted"
;;
media-pa)
case $2 in
pa) # tunneled pa
local midpat="([0-9]+)[[:blank:]]+module-" uri="127.0.0.1"
[ -n "$4" ] && uri+=":$4"
txt=$(env LC_ALL=C $COMMAND_PACTL list short 2>/dev/null)
[ -n "$txt" ] || {
nxlog "$lp '$svc'; local PA already stopped"; return 0; }
local mid es mids=$(rematchfn "$midpat.+server=$uri" "$txt" all);
#nxlog "$lp '$2'; rmids: "$mids; #debug
for mid in $mids; do
es=$($COMMAND_PACTL unload-module $mid 2>&1)
[ $? -ne 0 ] && errstr+="\n$es"
done
[ -n "$errstr" ] && {
nxlog "$lp '$2'; unload some local PA modules failed: $errstr";
}
nxlog "$lp $2 remote tunnel disconnected"
#nxlog "$lp $2 remote tunnel: $($COMMAND_PACTL list short 2>/dev/null)" #debug
;;
esac
[ -n "$3" ] && {
$COMMAND_PA --kill || {
nxlog "$lp '$2'; unable to kill local PA"; return 0; }
}
;;
esac
return 0
}
uservice_start() {
#args:
# <svc> [port] [type] [sharename] [username] [password] [data] [comp]
# [addr=127.0.0.1]
# if type is empty try to operate params from usess db
# if port not empty try to start on him
# Used config vars: COMMAND_HIDE COMMAND_UNHIDE
local lp="$FUNCNAME ($$/$BASHPID):" errstr="" qs svcport
local st startfl="" checkfl="" updvars="" updvals="" hpass
local svc="$1" port="$2" type="$3" share="$4"
local username="$5" pass="$6" data="$7" comp="$8"
local addr="$9"; [ -z "$addr" ] && addr="127.0.0.1";
[ "$type" = "smb-share" -a -n "$data" ] && data=$(norm_dir "$data" $HOME)
local i ok="" step="0.25" timeo="28" #4sec
[ -n "$type" -a -z "$port" ] && {
# starting no restarting - we wait for session listening port just in case
local lport_name=$(sess_lport_name $type)
local wstr="session_id='$session_id' AND $lport_name>0"
for (( i=0; i<=timeo; i++ )); do
port=$(q_vals_str_get "usess" "$wstr" "$lport_name") && break
sleep $step"s"
done
[ -n "$port" ] || {
nxlog "$lp $svc session $lport_name no declared after $((timeo/4)) s";
return 1; }
}
# waiting for suitable service status: on/off/""
ok="" step="0.25" timeo="28" #7sec
for (( i=0; i<=timeo; i++ )); do
st=$(usvcs_get $svc "status") || { ok="1"; break; }
stringinstring "$st" "starting|stopping" || { ok="1"; break; }
sleep $step"s"
done
[ -n "$ok" ] || {
nxlog "$lp service $svc ($port) still set in \"$st\" state after $((timeo/4)) s";
# FIXME!
[ "$st" = "stopping" ] || return 1;
nxlog "$lp service $svc ($port) set state 'off' ultimately";
usvcs_set $svc "status" "off"; st="off"
}
[ -z "$type" -a -z "$st" ] && {
nxlog "$lp '$svc': params for service are not found in usess db";
return 1; }
[ -z "$type" ] && { #load params from usess db
qs="$(usvcs_get $svc "type,port,share,username,pass,data,comp,addr")" || {
nxlog "$lp '$svc': can't get service params from usess db"; return 1; }
type=$(cutfn "$qs" 0 '&');
[ -z "$port" ] && port=$(cutfn "$qs" 1 '&');
share=$(cutfn "$qs" 2 '&'); username=$(cutfn "$qs" 3 '&');
pass=$(cutfn "$qs" 4 '&'); pass=$(echo "$pass" | $COMMAND_UNHIDE);
data=$(cutfn "$qs" 5 '&'); comp=$(cutfn "$qs" 6 '&');
addr=$(cutfn "$qs" 7 '&');
#nxlog "$lp service $svc ($st) load qs='$qs'" #debug
}
if [ "$st" = "on" ]; then
if uservice_mounted $type $svc; then
nxlog "$lp service $svc is allready mounted, skipping"; return 0
else
nxlog "$lp $svc service status is \"$st\", but it's not mounted. Try to start again";
startfl=1; [ -n "$type" ] && checkfl=1;
st="starting"; usvcs_set $svc "status" $st
fi
else
if uservice_mounted $type $svc; then
usvcs_set $svc "status" "stopping"
nxlog "$lp $svc service status is \"$st\", but it's mounted. Try to stop";
uservice_umount $type $svc $data || { return 1; }
fi
if [ "$st" = "off" ]; then
startfl=1; [ -n "$type" ] && checkfl=1;
st="starting"; usvcs_set $svc "status" $st
else # svc is not found in usess table
hpass=$(echo $pass | $COMMAND_HIDE)
usvcs_add "svc,type,status,port,share,comp,addr,username,pass,data" \
"$svc&$type&starting&$port&$share&$comp&$addr&$username&$hpass&$data"
startfl=1;
fi
fi
[ -n "$startfl" ] && {
[ -n "$checkfl" ] && {
local s_share s_username s_pass s_data s_comp s_addr
qs="$(usvcs_get $svc "share,username,pass,data,comp,addr")" || {
nxlog "$lp can't get service $svc params from usess _db"; return 1; }
s_share=$(cutfn "$qs" 0 '&'); s_username=$(cutfn "$qs" 1 '&');
s_pass=$(cutfn "$qs" 2 '&'); s_pass=$(echo $s_pass | $COMMAND_UNHIDE);
s_data=$(cutfn "$qs" 3 '&'); s_comp=$(cutfn "$qs" 4 '&');
s_addr=$(cutfn "$qs" 5 '&');
[ "$share" != "$s_share" ] && {
nxlog "$lp $svc share strings are different '$s_share' > '$share'"
updvars+=",share"; updvals+="&$share"; }
[ "$username" != "$s_username" ] && {
nxlog "$lp $svc username strings are different '$s_username' > '$username'"
updvars+=",username"; updvals+="&$username"; }
[ "$pass" != "$s_pass" ] && {
nxlog "$lp $svc password strings are different"
hpass=$(echo $pass | $COMMAND_HIDE)
updvars+=",pass"; updvals+="&$hpass"; }
[ "$data" != "$s_data" ] && {
nxlog "$lp $svc share strings are different '$s_data' > '$data'"
updvars+=",data"; updvals+="&$data"; }
[ "$comp" != "$s_comp" ] && {
nxlog "$lp $svc comp strings are different '$s_comp' > '$comp'"
updvars+=",comp"; updvals+="&$comp"; }
[ "$addr" != "$s_addr" ] && {
nxlog "$lp $svc addr strings are different '$s_addr' > '$addr'"
updvars+=",addr"; updvals+="&$addr"; }
}
#nxlog "$lp _$st _$type _$svc _$port _$username _$pass _$data _$comp" _$share" #debug
if uservice_mount $type $svc $port "$(echo -e "${username//\%/\\x}")" \
"$pass" "$data" "$(echo -e "${comp//\%/\\x}")" "$share";
then
usvcs_set $svc "status,port""$updvars" "on&"$port$updvals
return 0
else usvcs_set $svc "status,port" "off&0"
fi
}
return 1
}
uservice_stop() {
#arg: svc [type] [norestart]
# Used gvars: session_id
local lp="$FUNCNAME ($$/$BASHPID):"
local i ok="" st type=$2 lport_name lport="" data="" hardstop=$3
# waiting for suitable service status: on
local step=0.25 timeo=28 #7sec
for (( i=0; i<=timeo; i++ )); do
st=$(usvcs_get $svc "status")
[ "$st" = "on" ] && { ok="1"; break; }
sleep $step"s"
done
[ -n "$ok" ] || {
nxlog "$lp service $svc still set in \"$st\" state after $((timeo/4))s waitng";
return 1; }
[ -z "$type" ] && type=$(usvcs_get $svc "type")
usvcs_set $svc "status" "stopping"
[ -n "$hardstop" ] || { # get suitable session first
lport_name=$(sess_lport_name $type)
local wstr="status='Running' AND session_id!='$session_id' AND $lport_name>0"
#nxlog "$lp $svc wstr='$wstr'" #debug
lport=$(q_vals_str_get "usess" "$wstr" "$lport_name") || {
hardstop=1
nxlog "$lp '$svc': other suitable listening port is not found" #; wstr='$wstr'" #debug
}
}
[ -n "$hardstop" ] && { # if unable to restart we must known data
data=$(usvcs_get $svc "data"); }
#nxlog "$lp '$svc': hs=$hardstop; data=$data" #debug
uservice_umount $type $svc "$data" "$port" || return 1
[ -n "$hardstop" ] && {
if [ "$SESSION_LOG_CLEAN" = "1" ]; then
q_dbe "DELETE FROM usvcs WHERE svc='$1';"
else usvcs_set $1 "status,port" "off&0"
fi
return 0;
}
usvcs_set $svc "status,port" "off&0"
uservice_start $svc $lport #|| return 1
return 0
}
node_stop_services() {
# Used gvars: session_id
#local lp="$FUNCNAME ($$/$BASHPID):"
local lports=",$(usess_get $session_id "smbport,cupsport,mmport" ',')"
lports=${lports//,0/}; lports=${lports:1}
[ -n "$lports" ] || return # no services in session
local svc svcs
svcs=$(q_vals_strs_get "usvcs" "status='on' AND port IN ($lports)" "svc") #"
#nxlog "$lp lports=($lports) services list to stop: '$svcs'"; #debug
for svc in $svcs; do uservice_stop $svc; done
}
node_terminate_session() {
#args: <session_id> [status]
# Used gvars: nx_dir
# Used config vars: COMMAND_XAUTH, SESSION_LOG_CLEAN SERVER_NAME
local lp="$FUNCNAME ($$/$BASHPID):";
#nxlog "$lp Start terminating session_id='$1' with status '$2'" #debug
local qs=$(usess_get "$1" "display,agent_pid,tail_pid,status")
[ -z "$qs" ] && {
nxlog "$lp session_id='$1' not found in usess db. Bye."; return;
}
local status=$(cutfn "$qs" 3 '&')
stringinstring "$status" "Terminating|Finished|Failed" && {
nxlog "$lp Session status is already '$status'. Bye."; return;
}
local display=$(cutfn "$qs" 0 '&'); local sess_id="$SERVER_NAME-$display-$1"
[ -d "$nx_dir/C-$sess_id" ] || {
nxlog "$lp Session dir '$nx_dir/C-$sess_id' not found. Bye."; return;
}
usess_set "$1" "status" "Terminating"
local agent_pid=$(cutfn "$qs" 1 '&') tail_pid=$(cutfn "$qs" 2 '&')
local t_status="$2"; [ -z "$2" ] && t_status="Finished"
node_stop_services
kill -0 $agent_pid 2>/dev/null && {
#nxlog "$lp start killing of nxagent ($agent_pid)" #debug
kill $agent_pid 2>/dev/null
wait $agent_pid 2>/dev/null
kill -0 $agent_pid 2>/dev/null ||
nxlog "$lp nxagent ($agent_pid) is dead now"
}
((tail_pid>0)) && kill -0 $tail_pid 2>/dev/null && { # Kill tail process
#nxlog "$lp kill tail process ($tail_pid)" #debug
kill $tail_pid 2>/dev/null
wait $tail_pid 2>/dev/null
kill -0 $tail_pid 2>/dev/null || {
nxlog "$lp tail ($tail_pid) is dead now"; tail_pid="0"
usess_set "$session_id" "tail_pid" "0"
}
}
#nxlog "$lp Remove session information" #debug
rm -f /tmp/.X$display-lock; rm -f /tmp/.X11-unix/X$display
# Remove magic cookie information
$COMMAND_XAUTH remove "localhost:$display" >/dev/null 2>&1
$COMMAND_XAUTH remove ":$display" >/dev/null 2>&1
if [ "$SESSION_LOG_CLEAN" = "1" ]; then
#nxlog "$lp Clean session information." #debug
rm -rf "$nx_dir/C-$sess_id/"
rm -f "$nx_dir/nxnode-$1.log"
rm -f "$nx_dir/nxnode.log"
elif [ "$2" = "Failed" ]; then mv "$nx_dir/C-$sess_id/" "$nx_dir/F-C-$sess_id"
else mv "$nx_dir/C-$sess_id/" "$nx_dir/T-C-$sess_id"
fi
usess_close "$1" "$t_status"
#nxlog "$lp end" #debug
}
node_fail_restore_session() {
#arg: <session_id>
#local lp="$FUNCNAME ($$/$BASHPID):"; nxlog "$lp starting" #debug
echo "NX> 1004 Error: Could not resume session. nxagent process could not be found."
node_terminate_session "$1" "Failed"
#nxlog "$lp end. Next is 'exit 1'" #debug
exit_proc 1
}
node_suspend_session() {
#arg: <session_id>
local lp="$FUNCNAME ($$/$BASHPID):";
#nxlog "$lp starting" #debug
local agent_pid=$(usess_get "$1" "agent_pid")
nxlog "$lp Killing (HUP) agent_pid ($agent_pid)..."
kill -0 $agent_pid 2>/dev/null || {
nxlog "$lp nxagent is already dead. end (1)"; return 1;
}
kill -HUP $agent_pid 2>/dev/null && {
nxlog "$lp end (HUP)"; return 0;
}
return 1
}
node_find_application() {
#args: <type>
# Used config vars: $COMMAND_START_KDE, $COMMAND_START_GNOME,
# $COMMAND_START_CDE, $COMMAND_XTERM, $USER_X_STARTUP_SCRIPT,$DEFAULT_X_SESSION
local lp="$FUNCNAME ($$/$BASHPID):";
#nxlog "$lp starting with args \"$@\"" #debug
local node_startx=""
case $1 in
shadow|windows|vnc) return
;;
unix-kde) node_startx=$COMMAND_START_KDE
;;
unix-gnome) node_startx=$COMMAND_START_GNOME
;;
unix-cde) node_startx=$COMMAND_START_CDE
;;
windows-helper)
node_startx="$COMMAND_RDESKTOP /v:$agent_server /u:$agent_user"
[ -n "$agent_domain" ] && node_startx+=" /d:$agent_domain"
node_startx+=" /t:NX-$session-RDP-$agent_server@$agent_user"
node_startx+=" /p:$agent_password /size:$geometry $EXTRA_OPTIONS_RDP"
;;
vnc-helper)
if [ ! -x "$COMMAND_VNCVIEWER" ]; then
echo "$COMMAND_XMSG 'vncviwer not found'"
else
mkdir -p "$NXSESSION_DIRECTORY/scripts/"
echo "$agent_password" | \
$COMMAND_VNCPASSWD $NXSESSION_DIRECTORY/scripts/.passwd doit
node_startx="$COMMAND_VNCVIEWER -passwd \
$NXSESSION_DIRECTORY/scripts/.passwd $EXTRA_OPTIONS_RFB $agent_server"
fi
;;
unix-application)
[ "$application" = "xterm" ] && application=$COMMAND_XTERM
node_startx=$application
;;
unix-console) node_startx=$COMMAND_XTERM
;;
unix-default|*)
if [ -x "$HOME/$USER_X_STARTUP_SCRIPT" ]; then
node_startx="$HOME/$USER_X_STARTUP_SCRIPT"
elif [ -x "$DEFAULT_X_SESSION" ]; then
node_startx="$DEFAULT_X_SESSION"
else node_startx=$COMMAND_XTERM
fi
;;
esac
# dimbor: another personalyzed way to ACLS control and replace X-application
[ -n "$NX_ACL_DIR" ] || { echo "$node_startx"; return; }
local ucond=$(groups); ucond="'#$USER','*${ucond// /\',\'\*}','@all'"
local mode=".mode csv settings\n.separator '&'\n"
local qstr="SELECT key,value,val_depend FROM settings WHERE user IN ($ucond) \
AND key NOT IN ('@shadow@') ORDER BY user ASC, val_check ASC;"
#nxlog "$lp qstr='$qstr'" #debug
local ts=$(qa_dbe "$mode" "$qstr")
#nxlog "$lp ts='$ts'" #debug
local l tpl inv pm l2="" app_match="" app_rep="$COMMAND_XMSG '$NX_ACL_WARN'"
while read l; do
tpl="${l%%&*}"; tpl="$(sq2s "$tpl")"
inv=0; [ "${tpl:0:1}" = "!" ] && { tpl="${tpl:1}"; inv=1; }
pm=0; [[ "$node_startx" =~ $tpl ]] && pm=1
#nxlog "$lp $node_startx -> \"$l\" -> $tpl $inv $pm" #debug
((inv+pm==1)) && { l2=$l; app_match=1; break; }
done <<< "$ts"
if [ -n "$app_match" ]; then
tpl=$(cutfn "$l2" 1 '&'); tpl=$(sq2s "$tpl")
[ -n "$tpl" ] && { # process list checking
app_match=""
inv=0; [ "${tpl:0:1}" = "!" ] && { tpl="${tpl:1}"; inv=1; }
local psall=""; [ "${tpl:0:2}" = "@@" ] && { tpl="${tpl:2}"; psall=1; }
local psl;
if [ -n "$psall" ]; then psl="$(ps ax -o cmd=)"
else psl="$(ps -o cmd= -U $USER)"
fi
pm=0; rematchfn "($tpl)" "$psl" &>/dev/null && pm=1
((inv+pm==1)) && app_match=1
#nxlog "$lp $l - $tpl $inv $pm" #debug
}
local msg=$(cutfn "$l2" 2 '&'); msg=$(sq2s "$msg")
[ -n "$msg" ] && { # exe/msg checking
# need absolute path here?
[ -x "${msg%% *}" ] && app_rep="$msg" || app_rep="$COMMAND_XMSG '$msg'"
}
fi
if [ -n "$app_match" ]; then
echo "$node_startx";
else
nxlog "$lp App '$node_startx' replaced to '$app_rep'"
echo "$app_rep"
fi
}
node_start_applications() {
# Used glob vars: $type, $application, $sess_id, $mediahelper,
# $virtualdesktop, $rootless, $display
# Used config vars: <several>
local lp="$FUNCNAME ($$/$BASHPID):";
#nxlog "$lp starting" #debug
local app node_app napp;
local slave_apps psess sess_ps sapp;
local node_app_pid node_wm_pid;
local ok step timeo
local q=0 i s l
# Prepare application startup
export DISPLAY=:$display
#nxlog "$lp display='$display', waiting for it's ready" #debug
ok="" step="0.01" timeo=$((AGENT_STARTUP_TIMEOUT*100))
for (( i=0; i<=timeo; i++ )); do
[ -f /tmp/.X$display-lock ] && { ok="1"; break; }
sleep $step"s"
done
[ -n "$ok" ] || {
nxlog "$lp /tmp/.X$display-lock not found after $AGENT_STARTUP_TIMEOUT s";
return 1; }
#numlockx
if [ "$NUMLOCK_METHOD" != "system" ]; then
#nxlog "$lp Run \"$NUMLOCKX $NUMLOCKX_STATUS\"" #debug
"$NUMLOCKX" "$NUMLOCKX_STATUS"
fi
# Which application do we start?
app=$(node_find_application "$type")
# For rdesktop/VNC, there is no application to start
[ -n "$app" ] || return
if [ "$ENABLE_SAMBA_PRELOAD" = "1" ]; then
NXSAMBA_PORT=$(usess_get "$session_id" "smbport")
((NXSAMBA_PORT>0)) && {
export NXSAMBA_PORT
#nxlog "$lp Preload SAMBA using nxredir. NXSAMBA_PORT is '$NXSAMBA_PORT'" #debug
node_app="$PATH_BIN/nxredir $node_app"
echo "Info: NXNODE - Using nxredir wrapper script to forward \
SMB ports 139 and 445 to port $NXSAMBA_PORT." >> "$NXSESSION_DIRECTORY/session"
}
fi
#nxlog "$lp app is $app" #debug
# do fake eval for params
q=0; l=$app; node_app=()
while [ -n "$l" ]; do
s=${l%%[\'\"]*}; l=${l#*[\'\"]}
[ "$s" = "$l" ] && l=""
[ -n "$s" ] || continue
((q==0)) && { node_app+=($s); q=1; } || { node_app+=("$s"); q=0; }
done
#nxlog "$lp ${#node_app[@]}" #debug
#for ((i=0; i<${#node_app[@]}; i++)); do nxlog "$lp ${node_app[$i]}"; done #debug
[ "$cups" = "1" -o "$samba" = "1" ] && {
#nxlog "$lp export CUPS_SERVER=$CUPS_DEFAULT_SOCK" #debug
export CUPS_SERVER=$CUPS_DEFAULT_SOCK
}
# Use Xsession to execute the Desktop session
case $type in
unix-gnome)
export STARTUP="${node_app[@]}"
[ "$BOOTSTRAP_X_SESSION" = "1" ] && node_app=($COMMAND_GDM_X_SESSION)
;;
unix-kde|unix-cde)
export STARTUP="${node_app[@]}"
[ "$BOOTSTRAP_X_SESSION" = "1" ] && node_app=($DEFAULT_X_SESSION)
;;
esac
[ $ENABLE_ROOTLESS_TERMINATE_SESSION = "1" -a "$rootless" = "1" ] && {
psess=$($COMMAND_PS -wo sess= -p $$)
napp=${node_app[0]}; napp=${napp##*/}
slave_apps=$(rematchfn "$napp:(.+)" "${APP_WAIT_MAP//;/$'\n'}") #"
#nxlog "$lp slave(s) will be waiting too. Initial apps: '$slave_apps'" #debug
}
# Do we need to PRELOAD any libraries?
[ "$virtualdesktop" = "0" -a "$rootless" != "1" ] && export LD_PRELOAD="$APPLICATION_LIBRARY_PRELOAD:$LD_PRELOAD"
# close input and output file descriptors
exec 0<&-; exec 1>&-; exec 2>&-
# Should we start a window manager?
if [ "$virtualdesktop" = "1" -a "$type" = "unix-application" -a \
-x "$DEFAULT_X_WM" ]; then
#nxlog "$lp start a window manager - \"DISPLAY=:$display $DEFAULT_X_WM\"" #debug
DISPLAY=:$display $DEFAULT_X_WM >>"$NXSESSION_DIRECTORY/session" 2>&1 &
node_wm_pid=$!
#nxlog "$lp node_wm_pid='$node_wm_pid'" #debug
fi
# Startup the application
#nxlog "$lp Starting node_app with /etc/nxserver/Xsession" #debug
DISPLAY=:$display /etc/nxserver/Xsession "${node_app[@]}" >> \
"$NXSESSION_DIRECTORY/session" 2>&1 &
node_app_pid=$!
nxlog "$lp Start '${node_app[@]}'. Waiting for node_app_pid='$node_app_pid'"
wait $node_app_pid
nxlog "$lp node_app_pid finished"
# Kill or wait for the started window manager
[ -n "$node_wm_pid" ] && {
nxlog "$lp node_wm_pid is not empty"
# kill the WM after application is finished?
[ "$KILL_DEFAULT_X_WM" = "1" ] && { nxlog "$lp killing $node_wm_pid"
kill $node_wm_pid 2>/dev/null; }
# or just wait until it finishes?
[ "$KILL_DEFAULT_X_WM" = "1" ] || { nxlog "$lp wait for $node_wm_pid is dead"
wait $node_wm_pid; }
}
sleep "$NODE_APP_WAIT_TIMEOUT"s
[ $ENABLE_ROOTLESS_TERMINATE_SESSION = "1" -a "$rootless" = "1" ] && {
if [ -n "$slave_apps" ] ; then
nxlog "$lp slave(s) will be waiting too. Initial: '$slave_apps'"
sapp=$napp
while [ -n "$sapp" ]; do
sess_ps=$($COMMAND_PS -wo user=,cmd= -s $psess); sapp=""
#nxlog "$lp '$sess_ps'" #debug
while read l; do
[ "$(cutfn "$l" 0)" = "$USER" ] || continue
s=$(cutfn "$l" 1); s=${s##*/}
stringinstring "$s," "$slave_apps," && {
sapp=$s;
#nxlog "$lp >> $sapp '$l'" #debug
break;
}
done <<< "$sess_ps"
sleep "$NODE_APP_WAIT_TIMEOUT"s
done
nxlog "$lp Session app(s) are finished"
fi
node_terminate_session "$session_id"
}
# Do not terminate agent in case of rootless agent mode.
# The agent times out after a while by itself anyway.
if [ "$virtualdesktop" = "1" -o "$rootless" != "1" ] ; then
#nxlog "$lp Call node_terminate_session for non-rootless or virtualdesktop session type" #debug
node_terminate_session "$session_id"
fi
#nxlog "$lp end" #debug
}
node_agent_persistent_session() {
# Is the user allowed to run a persistent session?
local username IFS="," p="-nopersistent"
[ "$ENABLE_PERSISTENT_SESSION" = "all" ] && p="-persistent" || {
for username in $ENABLE_PERSISTENT_SESSION; do
[ "${username:0:1}" != "@" ] && [ "$USER" = "$username" ] && \
p="-persistent" && break;
[ "${username:0:1}" = "@" ] && \
[ -z $(groups "$USER" | egrep "^${username:1}:") ] && \
p="-persistent" && break;
done
}
for username in $DISABLE_PERSISTENT_SESSION; do
[ "${username:0:1}" != "@" ] && [ "$USER" = "$username" ] && \
p="-nopersistent" && break;
[ "${username:0:1}" = "@" ] && \
[ -z $(groups "$USER" | egrep "^${username:1}:") ] && \
p="-nopersistent" && break;
done
echo "$p"
}
node_start_agent() {
# Ok, now we do some wicked fd magic.
# first part: nxagent's fd #2 -> fd #3
# second part: fd #1 -> #4; fd #3 -> #1; tee | node_start_monitor
# third part: fd #4 -> #1
# => all output of nxagent goes to tee | node_start_monitor, while
# leaving all other output flow through like normally.
# preparations
local lp="$FUNCNAME ($$/$BASHPID):";
local k g b r fp vncfullscreen u p d agent_port viewonly
local agent_exit_status node_failed
#nxlog "$lp starting" #debug
exec 3>&2; exec 4>&1;
{
{
export DISPLAY="nx/nx,options=$NXSESSION_DIRECTORY/options:$display"
export XAUTHORITY="$NXSESSION_DIRECTORY/authority"
export HOME
export NX_CLIENT="$PATH_BIN/nxdialog"
# Setup optional parameters for nxagent
# keyboard
k=""
# backwards compatibility
[ -n "$keyboard" ] && k="-keyboard $keyboard"
[ -n "$kbtype" ] && k="-kbtype $kbtype"
# backingstore
b=""
if [ -n "$backingstore" ]; then
[ "$backingstore" != 1 ] && b="-bs $backingstore"
[ "$backingstore" = 1 ] && b="+bs"
fi
# geometry
g=""
[ -n "$geometry" ] && g="-geometry $geometry"
# type of session
r="-D"; [ "$rootless" = "1" ] && r="-R"
# Setup fullscreen parameters
[ "$geometry" = "fullscreen" ] && \
[ "$type" = "vnc-helper" -o "$type" = "windows-helper" ] && \
g="-geometry $(rematchfn '^([[:digit:]]+x[[:digit:]]+)' $screeninfo)"
if [ "$r" = "-R" -a "$rootless" != "1" ]; then
#nxlog "$lp Start nxproxy for single application session mode" #debug