Skip to content
Permalink
Branch: master
Find file Copy path
Find file Copy path
Fetching contributors…
Cannot retrieve contributors at this time
429 lines (405 sloc) 14.6 KB
#!/bin/sh /etc/rc.common
# TLD optimization written by Dirk Brenken (dev@brenken.org)
PKG_VERSION=
export START=94
export USE_PROCD=1
readonly packageName='simple-adblock'
readonly serviceName="$packageName $PKG_VERSION"
readonly PID="/var/run/${packageName}.pid"
readonly dnsmasqFile="/var/dnsmasq.d/${packageName}"
export EXTRA_COMMANDS="check killcache"
export EXTRA_HELP=" check Checks if specified domain is found in current blacklist"
readonly A_TMP='/var/simple-adblock.hosts.a.tmp'
readonly B_TMP='/var/simple-adblock.hosts.b.tmp'
readonly CACHE_TMP='/var/simple-adblock.cache'
readonly h_filter='/localhost/d;/^#/d;/^[^0-9]/d;s/^0\.0\.0\.0.//;s/^127\.0\.0\.1.//;s/[[:space:]]*#.*$//;s/[[:cntrl:]]$//;s/[[:space:]]//g;/[`~!@#\$%\^&\*()=+;:"'\'',<>?/\|[{}]/d;/]/d;/\./!d;/^$/d;'
readonly d_filter='/^#/d;s/[[:space:]]*#.*$//;s/[[:space:]]*$//;s/[[:cntrl:]]$//;/[[:space:]]/d;/[`~!@#\$%\^&\*()=+;:"'\'',<>?/\|[{}]/d;/]/d;/\./!d;/^$/d;'
readonly f_filter='s|^|local=/|;s|$|/|'
readonly checkmark='\xe2\x9c\x93'
readonly xmark='\xe2\x9c\x97'
readonly _OK_='\033[0;32m\xe2\x9c\x93\033[0m'
readonly _FAIL_='\033[0;31m\xe2\x9c\x97\033[0m'
readonly __OK__='\033[0;32m[\xe2\x9c\x93]\033[0m'
readonly __FAIL__='\033[0;31m[\xe2\x9c\x97]\033[0m'
readonly _ERROR_='\033[0;31mERROR\033[0m'
create_lock() { [ -e "$PID" ] && return 1; touch "$PID"; }
remove_lock() { [ -e "$PID" ] && rm -f "$PID"; rm -f /var/simple-adblock_tmp_* >/dev/null 2>&1; }
trap remove_lock EXIT
output_ok() { case $verbosity in 1) output 1 "$_OK_";; 2) output 2 "$__OK__\n";; esac; }
output_okn() { case $verbosity in 1) output 1 "$_OK_\n";; 2) output 2 "$__OK__\n";; esac; }
output_fail() { case $verbosity in 1) output 1 "$_FAIL_";; 2) output 2 "$__FAIL__\n";; esac; }
output_failn() { case $verbosity in 1) output 1 "$_FAIL_\n";; 2) output 2 "$__FAIL__\n";; esac; }
export logmsg
output() {
# Can take a single parameter (text) to be output at any verbosity
# Or target verbosity level and text to be output at specifc verbosity
if [[ $# -ne 1 ]]; then
[[ ! $((verbosity & $1)) -gt 0 ]] && return 0 || shift
fi
[[ -t 1 ]] && echo -e -n "$1" # if we're running in console, echo text
# strip text of ASCII control characters and send completed lines to log
local msg=$(echo -n "${1/$serviceName /service }" | sed 's|\\033\[[0-9]\?;\?[0-9]\?[0-9]\?m||g');
if [[ $(echo -e -n "$msg" | wc -l) -gt 0 ]]; then
logger -t "${packageName:-service} [$$]" "$(echo -e -n ${logmsg}${msg})"
logmsg=''
else
logmsg=${logmsg}${msg}
fi
}
led_on(){ [[ -n "${1}" && -e "${1}/trigger" ]] && echo "default-on" > "${1}/trigger" 2>&1; }
led_off(){ [[ -n "${1}" && -e "${1}/trigger" ]] && echo "none" > "${1}/trigger" 2>&1; }
boot() { load_package_config; ( sleep $bootDelay && rc_procd start_service && rc_procd service_triggers | cat & ); }
export serviceEnabled verbosity forceDNS debug led wan_if wan_gw wanphysdev bootDelay dl_command serviceStatus
load_package_config() {
config_load "$packageName"
config_get_bool serviceEnabled 'config' 'enabled' 1
config_get_bool forceDNS 'config' 'force_dns' 1
config_get_bool debug 'config' 'debug' 0
config_get bootDelay 'config' 'boot_delay' '120'
config_get dlTimeout 'config' 'download_timeout' '20'
config_get verbosity 'config' 'verbosity' '2'
config_get led 'config' 'led'
if [ -z "${verbosity##*[!0-9]*}" ] || [ $verbosity -lt 0 ] || [ $verbosity -gt 2 ]; then
verbosity=1
fi
source /lib/functions/network.sh
dl_command="wget --no-check-certificate --timeout $dlTimeout -qO-"
led="${led:+/sys/class/leds/$led}"
}
is_enabled() {
local sleepCount=1
load_package_config
if [ "$debug" -ne 0 ]; then
exec 1>>/tmp/simple-adblock.log
exec 2>&1
set -x
fi
if [ $serviceEnabled -eq 0 ]; then
if [ "$1" == "on_start" ]; then
output "$packageName is currently disabled.\n"
output "Run the following commands before starting service again:\n"
output "uci set $packageName.config.enabled='1'; uci commit;\n"
fi
return 1
fi
network_flush_cache; network_find_wan wan_if; network_get_gateway wan_gw $wan_if;
[ -n "$wan_gw" ] && return 0
output "$_ERROR_: $serviceName failed to discover WAN gateway.\n"; return 1;
}
dnsmasq_kill() { killall -q -HUP dnsmasq; }
dnsmasq_restart() { /etc/init.d/dnsmasq restart >/dev/null 2>&1; }
reload_dnsmasq() {
case $1 in
on_start)
if [ -s $dnsmasqFile ]; then
output 3 'Restarting dnsmasq '
if dnsmasq_restart; then
led_on "$led"
output_okn
else
output_failn
output "$_ERROR_: $serviceName failed to restart dnsmasq!\n"
serviceStatus="${serviceStatus:-'DNSMASQ restart error'}"
return 1
fi
else
output "$_ERROR_: $serviceName failed to create its data file!\n"
serviceStatus="${serviceStatus:-'Failed to create data file'}"
return 1
fi
;;
on_stop)
[ -f $dnsmasqFile ] && mv $dnsmasqFile $CACHE_TMP
output 3 'Restarting dnsmasq '
if dnsmasq_restart; then
led_off "$led"
output_okn
output "$serviceName stopped.\n"
return 0
else
output_failn;
output "$_ERROR_: $serviceName failed to restart dnsmasq!\n"
return 1
fi
;;
quiet | *)
dnsmasq_restart && return 0 || return 1
;;
esac
}
ubus_status(){
case "$1" in
add)
ubus_status set "$(ubus_status get)${2}"
;;
del | set)
ubus call service set "{ \"name\": \"${packageName}\", \"instances\": { \"status\": { \"command\": [ \"\" ], \"data\": { \"status\": \"${2}\" }}}}"
# ubus call service set "{ \"name\": \"${packageName}\", \"instances\": { \"status\": { \"data\": { \"status\": \"${2}\" }}}}"
;;
get)
echo "$(ubus call service list "{\"name\": \"${packageName}\"}" | jsonfilter -l1 -e "@['${packageName}']['instances']['status']['data']['status']")"
;;
esac
}
is_chaos_calmer() { ubus -S call system board | grep -q 'Chaos Calmer'; }
remove_fw3_redirect() {
config_get name "$1" 'name'
if [[ -n "$name" && "$name" != "${name//simple_adblock}" ]]; then
uci -q del "firewall.$1"
fi
}
fw3_setup() {
config_load 'firewall'
config_foreach remove_fw3_redirect 'redirect'
if [ "$1" == "start" ]; then
uci -q add firewall redirect >/dev/null 2>&1
uci -q set firewall.@redirect[-1].name='simple_adblock_dns_hijack'
uci -q set firewall.@redirect[-1].target='DNAT'
uci -q set firewall.@redirect[-1].src='lan'
uci -q set firewall.@redirect[-1].proto='tcpudp'
uci -q set firewall.@redirect[-1].src_dport='53'
uci -q set firewall.@redirect[-1].dest_port='53'
uci -q set firewall.@redirect[-1].dest_ip="$ip"
uci -q set firewall.@redirect[-1].reflection='0'
fi
if [ -n "$(uci changes firewall)" ]; then
uci -q commit firewall
/etc/init.d/firewall restart >/dev/null 2>&1
fi
}
process_url() {
local label type D_TMP R_TMP
[[ -n "$1" && -n "$2" && -n "$3" ]] || return 1
# ping -W5 -c1 "$(echo $1 | awk -F '/' '{print $3}')" 1>/dev/null 2>/dev/null || { output_fail; return 1; }
if [ "$2" == "hosts" ]; then
label="Hosts: $(echo $1 | cut -d'/' -f3)" filter="$h_filter"
else
label="Domains: $(echo $1 | cut -d'/' -f3)" filter="$d_filter"
fi
if [ "$3" == "blocked" ]; then
type='Blocked'; D_TMP="$B_TMP";
else
type='Allowed'; D_TMP="$A_TMP";
fi
while [[ -z "$R_TMP" || -e "$R_TMP" ]]; do
R_TMP="/var/${packageName}_tmp_$(head -c40 /dev/urandom 2>/dev/null | tr -dc 'A-Za-z0-9' 2>/dev/null)"
done
touch "$R_TMP"
if ! $dl_command "$1" > "$R_TMP" 2>/dev/null; then
output 2 "[DL] $type $label $__FAIL__\n"
output 1 "$_FAIL_"
ubus_status add '-'
return 1
fi
sed -i "$filter" "$R_TMP"
cat "$R_TMP" >> "$D_TMP"
rm -f "$R_TMP" >/dev/null 2>/dev/null
output 2 "[DL] $type $label $__OK__\n"
output 1 "$_OK_"
ubus_status add '+'
return 0
}
download_lists() {
local i hf w_filter whitelist_domains blacklist_domains whitelist_domains_urls blacklist_domains_urls blacklist_hosts_urls j=0
config_get whitelist_domains 'config' 'whitelist_domain'
config_get blacklist_domains 'config' 'blacklist_domain'
config_get whitelist_domains_urls 'config' 'whitelist_domains_url'
config_get blacklist_domains_urls 'config' 'blacklist_domains_url'
config_get blacklist_hosts_urls 'config' 'blacklist_hosts_url'
ubus_status set 'Reloading '
[ ! -d ${dnsmasqFile%/*} ] && mkdir -p ${dnsmasqFile%/*}
for i in $A_TMP $B_TMP $CACHE_TMP $dnsmasqFile; do [ -f $i ] && rm -f $i; done
if [ "$(awk '/^MemFree/ {print int($2/1000)}' "/proc/meminfo")" -lt 32 ]; then
output 3 'Low free memory, restarting dnsmasq...'
reload_dnsmasq 'quiet' && output_okn || output_failn
fi
touch $A_TMP; touch $B_TMP;
output 1 'Downloading lists '
if [ -n "$blacklist_hosts_urls" ]; then
for hf in ${blacklist_hosts_urls}; do
process_url "$hf" 'hosts' 'blocked' &
done
fi
if [ -n "$blacklist_domains_urls" ]; then
for hf in ${blacklist_domains_urls}; do
process_url "$hf" 'domains' 'blocked' &
done
fi
if [ -n "$whitelist_domains_urls" ]; then
for hf in ${whitelist_domains_urls}; do
process_url "$hf" 'domains' 'allowed' &
done
fi
wait
i="$(ubus_status get)"
[ "${i//-}" != "$i" ] && serviceStatus="${serviceStatus:-'Download error'}" || unset serviceStatus
i="${i//Reloading }"
i="${i//-/$xmark}"
i="${i//+/$checkmark}"
[ "$verbosity" == "1" ] && logmsg="${logmsg}${i}"
output 1 '\n'
[ -n "$blacklist_domains" ] && for hf in ${blacklist_domains}; do echo "$hf" | sed "$d_filter" >> $B_TMP; done
whitelist_domains="${whitelist_domains}"$'\n'"$(cat $A_TMP)"
[ -n "$whitelist_domains" ] && for hf in ${whitelist_domains}; do hf=$(echo $hf | sed 's/\./\\./g'); w_filter="$w_filter/^${hf}$/d;/\\.${hf}$/d;"; done
if [ -s $B_TMP ]; then
output 1 'Processing downloads '
output 2 'Sorting combined list '
if sort $B_TMP | uniq > $A_TMP; then
output_ok
else
output_fail
serviceStatus="${serviceStatus:-'Sorting error'}"
fi
output 2 'Optimizing combined list '
if awk -F "." '{for(f=NF;f>1;f--)printf "%s.",$f;print $1}' "$A_TMP" > "$B_TMP"; then
if sort "$B_TMP" > "$A_TMP"; then
if awk '{if(NR==1){tld=$NF};while(getline){if($NF!~tld"\\."){print tld;tld=$NF}}print tld}' "$A_TMP" > "$B_TMP"; then
if awk -F "." '{for(f=NF;f>1;f--)printf "%s.",$f;print $1}' "$B_TMP" > "$A_TMP"; then
if sort "$A_TMP" | uniq > "$B_TMP"; then
output_ok
else
output_fail
serviceStatus="${serviceStatus:-'Data file optimization error'}"
mv $A_TMP $B_TMP
fi
else
output_fail
serviceStatus="${serviceStatus:-'Data file optimization error'}"
fi
else
output_fail
serviceStatus="${serviceStatus:-'Data file optimization error'}"
mv $A_TMP $B_TMP
fi
else
output_fail
serviceStatus="${serviceStatus:-'Data file optimization error'}"
fi
else
output_fail
serviceStatus="${serviceStatus:-'Data file optimization error'}"
mv $A_TMP $B_TMP
fi
output 2 'Whitelisting domains '
if sed -i "$w_filter" $B_TMP; then
output_ok
else
output_fail
serviceStatus="${serviceStatus:-'Whitelist processing error'}"
fi
output 2 'Formatting merged file '
if sed "$f_filter" $B_TMP > $A_TMP; then
output_ok
else
output_fail
serviceStatus="${serviceStatus:-'Data file formatting error'}"
fi
output 2 'Creating dnsmasq config '
if mv $A_TMP $dnsmasqFile; then
output_ok
else
output_fail
serviceStatus="${serviceStatus:-'Error moving data file'}"
fi
output 2 'Removing temporary files '
rm -f /var/simple-adblock_tmp_* >/dev/null 2>&1;
for i in $A_TMP $B_TMP $CACHE_TMP; do if [ -s $i ]; then rm -f $i || j=1; fi; done
if [ $j -eq 0 ]; then
output_ok
else
output_fail
serviceStatus="${serviceStatus:-'Error removing temporary files'}"
fi
output 1 '\n'
fi
}
start_service() {
local ip status
if create_lock; then
is_enabled 'on_start' || return 1
procd_open_instance
procd_set_param command /bin/true
procd_set_param stdout 1
procd_set_param stderr 1
network_get_ipaddr ip 'lan'
if [[ $forceDNS -ne 0 && -n "$ip" ]]; then
if is_chaos_calmer; then
fw3_setup 'start'
else
procd_open_data
json_add_array firewall
json_add_object ""
json_add_string type redirect
json_add_string target 'DNAT'
json_add_string src 'lan'
json_add_string proto 'tcpudp'
json_add_string src_dport '53'
json_add_string dest_port '53'
json_add_string dest_ip "$ip"
json_add_string name 'simple_adblock_dns_hijack'
json_add_string reflection '0'
json_close_object
json_close_array
procd_close_data
fi
fi
procd_close_instance
status="$(ubus_status get)"
if [ -s "$CACHE_TMP" ] && [ "$1" != "reload" ]; then
output "Starting $serviceName...\n"
output 3 'Found existing data file, reusing it '
mv $CACHE_TMP $dnsmasqFile && output_okn || output_failn
reload_dnsmasq 'on_start' || serviceStatus="${serviceStatus:-'DNSMASQ restart error'}"
elif [ "$1" == "reload" ] || [ "$status" == "${status//Success}" ]; then
output "Reloading $serviceName...\n"
download_lists
reload_dnsmasq 'on_start' || serviceStatus="${serviceStatus:-'DNSMASQ restart error'}"
elif [ ! -s "$dnsmasqFile" ]; then
output "Starting $serviceName...\n"
download_lists
reload_dnsmasq 'on_start' || serviceStatus="${serviceStatus:-'DNSMASQ restart error'}"
fi
if [ -s "$dnsmasqFile" ]; then
if [ -z "$serviceStatus" ]; then
output "$serviceName is blocking $(wc -l < $dnsmasqFile) domains "; output_okn;
serviceStatus="Success: $(wc -l < $dnsmasqFile) domains blocked"
else
output "$serviceName is blocking $(wc -l < $dnsmasqFile) domains with error: $serviceStatus "; output_failn;
serviceStatus="$(wc -l < $dnsmasqFile) domains blocked with error: $serviceStatus"
fi
fi
[ -n "$serviceStatus" ] && ubus_status set "$serviceStatus"
remove_lock
else
output "$serviceName: another instance is starting up "; output_failn;
return 1
fi
}
service_started() { procd_set_config_changed firewall; }
reload_service() { start_service 'reload'; }
killcache() { [ -s $CACHE_TMP ] && rm -f $CACHE_TMP >/dev/null 2>/dev/null; }
stop_service() {
load_package_config
if [ $serviceEnabled -gt 0 ]; then
output "Stopping $serviceName...\n"
reload_dnsmasq 'on_stop'
else
reload_dnsmasq 'quiet'
fi
ubus_status set 'Stopped'
procd_set_config_changed firewall
}
check() {
load_package_config
local string="$1"
if [ ! -f $dnsmasqFile ]; then
echo "No local blacklist ($dnsmasqFile) found."
elif [ -z "$string" ]; then
echo "Usage: /etc/init.d/${packageName} check 'domain'"
elif grep -m1 -q $string $dnsmasqFile; then
echo "Found $(grep $string $dnsmasqFile | wc -l) matches for $string in $dnsmasqFile:"
grep $string $dnsmasqFile | sed 's|local=/||;s|/$||;'
else
echo "The $string is not found in current blacklist."
fi
}
You can’t perform that action at this time.