Roteador Netgear R7000
Tomate v1.28.0000 -2017.2-kille72-K26ARM USB AIO-64K
Eu poderia fazer alguma ajuda para depurar meu script.
Objetivo: recuperar o número da porta encaminhada do JSON da API da VPN, passar o número da porta para executar o daemon de transmissão usando a transmissão remota.
Minha entrada:
#!/opt/bin/bash
#
# Enable port forwarding when using Private Internet Access
#
# Usage:
# ./port_forwarding.sh
set -x
exec 5>/etc/openvpn/mylog
BASH_XTRACEFD="5"
PS4='$LINENO: '
TRANSUSER=me
TRANSPASS=mypass
TRANSHOST=192.168.1.251
/bin/echo waiting 20s for vpn to connect and trasmission to start
sleep 20
error( )
{
/bin/echo "$@" 1>&2
exit 1
}
error_and_usage( )
{
/bin/echo "$@" 1>&2
usage_and_exit 1
}
usage( )
{
/bin/echo "Usage: 'dirname $0'/$PROGRAM"
}
usage_and_exit( )
{
usage
exit $1
}
version( )
{
/bin/echo "$PROGRAM version $VERSION"
}
port_forward_assignment( )
{
client_id_file="/etc/openvpn/pia_client_id"
if [ ! -f "$client_id_file" ]; then
if hash /opt/bin/shasum 2>/dev/null; then
/usr/bin/head -n 100 /dev/urandom | /opt/bin/shasum -a 256 | tr -d " -" > "$client_id_file"
elif hash /opt/bin/sha256sum 2>/dev/null; then
/usr/bin/head -n 100 /dev/urandom | /opt/bin/sha256sum | tr -d " -" > "$client_id_file"
else
/bin/echo "Please install shasum or sha256sum, and make sure it is visible in your \$PATH"
exit 1
fi
fi
client_id='/bin/cat "$client_id_file"'
json='/opt/bin/curl "http://209.222.18.222:2000/?client_id=$client_id" 2>/dev/null'
if [ "$json" == "" ]; then
json='Port forwarding is already activated on this connection, has expired, or you are not connected to a PIA region that supports port forwarding'
fi
/bin/echo server returned message: $json
#trim VPN forwarded port from JSON
PORT=$(echo $json | /usr/bin/awk 'BEGIN{r=1;FS="[{}\":]+"} /port/{r=0; print $3} END{exit r}')
/bin/echo if succesful port is:$PORT
#change transmission port on the fly
/opt/bin/transmission-remote $TRANSHOST --auth $TRANSUSER:$TRANSPASS -p "$PORT"
/bin/echo your transmission details: $TRANSHOST $TRANSUSER $TRANSPASS
}
/bin/echo remember to reconnect to VPN before running this script. Run no longer than 2 minutes after connection or this will fail!
EXITCODE=0
PROGRAM='basename $0'
VERSION=2.1
while /usr/bin/test $# -gt 0
do
case $1 in
--usage | --help | -h )
usage_and_exit 0
;;
--version | -v )
version
exit 0
;;
*)
error_and_usage "Unrecognised option: $1"
;;
esac
shift
done
port_forward_assignment
exit 0
Problema: Quando eu executo este script do shell ele funciona bem, mas quando eu chamo o script na minha configuração openvpn eu recebo este resultado:
+ PS4='$LINENO: '
12: TRANSUSER=me
13: TRANSPASS=mypass
14: TRANSHOST=192.168.1.251
16: /bin/echo waiting 20s for vpn to connect and trasmission to start
17: sleep 20
79: /bin/echo remember to reconnect to VPN before running this script. Run no longer than 2 minutes after connection or this will 'fail!'
81: EXITCODE=0
882: basename /etc/openvpn/test.sh
82: PROGRAM=test.sh
83: VERSION=2.1
85: /usr/bin/test 1 -gt 0
87: case $1 in
96: error_and_usage 'Unrecognized option: [AF_INET]45.136.190.211 1198'
27: /bin/echo 'Unrecognized option: [AF_INET]46.136.190.211 1198'
28: usage_and_exit 1
38: usage
333: dirname /etc/openvpn/test.sh
33: /bin/echo 'Usage: /etc/openvpn/test.sh'
39: exit 1
Funciona bem quando executado em shell:
+ PS4='$LINENO: '
12: TRANSUSER=me
13: TRANSPASS=mypass
14: TRANSHOST=192.168.1.251
16: /bin/echo waiting 20s for vpn to connect and trasmission to start
17: sleep 20
79: /bin/echo remember to reconnect to VPN before running this script. Run no longer than 2 minutes after connection or this will 'fail!'
81: EXITCODE=0
882: basename ./test.sh
82: PROGRAM=test.sh
83: VERSION=2.1
85: /usr/bin/test 0 -gt 0
102: port_forward_assignment
50: client_id_file=/etc/openvpn/pia_client_id
51: '[' '!' -f /etc/openvpn/pia_client_id ']'
661: /bin/cat /etc/openvpn/pia_client_id
61: client_id=080db0a6e936918d405683447a78bf426223e9a1ea2ecce744722ac3241d4232
662: /opt/bin/curl 'http://209.222.18.222:2000/?client_id=080db0a6e936918d405683447a78bf426273e9a1ea2ecce744722ac3241d4232'
62: json='{"port":44257}'
63: '[' '{"port":44257}' == '' ']'
67: /bin/echo server returned message: '{"port":44257}'
770: echo '{"port":44257}'
770: /usr/bin/awk 'BEGIN{r=1;FS="[{}\":]+"} /port/{r=0; print $3} END{exit r}'
70: PORT=44257
71: /bin/echo if successful port is:44257
75: /opt/bin/transmission-remote 192.168.1.251 --auth me:mypass -p 44257
76: /bin/echo your transmission details: 192.168.1.251 me mypass
104: exit 0
Onde estou indo errado? Por que isso falha quando o script é chamado pelo OpenVPN e não quando eu executo o shell? Como posso descobrir o que o AF_INET aponta também? Estranhamente, o endereço IP no erro é meu servidor e porta VPN cliente, não o número de porta encaminhado retornado do JSON.
Minha configuração do OpenVPN:
# Automatically generated configuration
daemon
client
dev tun11
proto udp
remote nl.privateinternetaccess.com 1198
resolv-retry 30
nobind
persist-key
persist-tun
comp-lzo adaptive
ncp-ciphers AES-128-GCM:AES-256-GCM:AES-128-CBC:AES-256-CBC
cipher AES-128-CBC
redirect-gateway def1
verb 3
script-security 2
up updown.sh
down updown.sh
ca ca.crt
status-version 2
status status
# Custom Configuration
syslog [progname]
persist-key
persist-tun
tls-client
auth-user-pass /tmp/password.txt
comp-lzo
verb 3
reneg-sec 0
ipchange "/etc/openvpn/test.sh"
script-security 3
EDIT #
Graças ao Ipor Sircer, consegui evitar o erro não definindo o argumento 1. Minha entrada agora é assim (para simplificar), mas minha saída quando chamada pelo OpenVPN é muito diferente de quando eu executo o script diretamente.
Minha entrada:
#!/opt/bin/bash
#
# Enable port forwarding when using Private Internet Access
#
# Usage:
# ./port_forwarding.sh
set -x
exec 5>/etc/openvpn/mylog
BASH_XTRACEFD="5"
PS4='$LINENO: '
TRANSUSER=me
TRANSPASS=mypass
TRANSHOST=192.168.1.251
client_id_file="/etc/openvpn/pia_client_id"
if [ ! -f "$client_id_file" ]; then
if hash /opt/bin/shasum 2>/dev/null; then
/usr/bin/head -n 100 /dev/urandom | /opt/bin/shasum -a 256 | tr -d " -" > "$client_id_file"
elif hash /opt/bin/sha256sum 2>/dev/null; then
/usr/bin/head -n 100 /dev/urandom | /opt/bin/sha256sum | tr -d " -" > "$client_id_file"
else
/bin/echo "Please install shasum or sha256sum, and make sure it is visible in your \$PATH"
exit 1
fi
fi
client_id='/bin/cat "$client_id_file"'
json='/opt/bin/curl "http://209.222.18.222:2000/?client_id=$client_id" 2>/dev/null'
if [ "$json" == "" ]; then
json='Port forwarding is already activated on this connection, has expired, or you are not connected to a PIA region that supports port forwarding'
fi
/bin/echo server returned message: $json
#trim VPN forwarded port from JSON
PORT=$(echo $json | /usr/bin/awk 'BEGIN{r=1;FS="[{}\":]+"} /port/{r=0; print $3} END{exit r}')
/bin/echo if successful port is:$PORT
#change transmission port on the fly
/opt/bin/transmission-remote $TRANSHOST --auth $TRANSUSER:$TRANSPASS -p "$PORT"
/bin/echo your transmission details: $TRANSHOST $TRANSUSER $TRANSPASS
Saída com o OpenVPN:
+ PS4='$LINENO: '
12: TRANSUSER=me
13: TRANSPASS=pass
14: TRANSHOST=192.168.1.251
16: client_id_file=/etc/openvpn/pia_client_id
17: '[' '!' -f /etc/openvpn/pia_client_id ']'
227: /bin/cat /etc/openvpn/pia_client_id
27: client_id=080db0a6e936918d405683447a78bf426273e9a1ea2ecce744722ac3241d4232
228: /opt/bin/curl 'http://209.222.18.222:2000/?client_id=080db0a6e936918d405683447a78bf426273e9a1ea2ecce744722ac3241d4232'
28: json=
29: '[' '' == '' ']'
30: json='Port forwarding is already activated on this connection, has expired, or you are not connected to a PIA region that supports port forwarding'
33: /bin/echo server returned message: Port forwarding is already activated on this connection, has expired, or you are not connected to a PIA region that supports port forwarding
336: echo Port forwarding is already activated on this connection, has expired, or you are not connected to a PIA region that supports port forwarding
336: /usr/bin/awk 'BEGIN{r=1;FS="[{}\":]+"} /port/{r=0; print $3} END{exit r}'
36: PORT=
37: /bin/echo if successful port is:
41: /opt/bin/transmission-remote 192.168.1.251 --auth me:pass -p ''
42: /bin/echo your transmission details: 192.168.1.251 me pass
Sem o OpenVPN:
16: client_id_file=/etc/openvpn/pia_client_id
17: '[' '!' -f /etc/openvpn/pia_client_id ']'
227: /bin/cat /etc/openvpn/pia_client_id
27: client_id=080db0a6e936918d405683447a78bf426273e9a1ea2ecce744722ac3241d4232
228: /opt/bin/curl 'http://209.222.18.222:2000/?client_id=080db0a6e936918d405683447a78bf426273e9a1ea2ecce744722ac3241d4232'
28: json='{"port":44257}'
29: '[' '{"port":44257}' == '' ']'
33: /bin/echo server returned message: '{"port":44257}'
336: echo '{"port":44257}'
336: /usr/bin/awk 'BEGIN{r=1;FS="[{}\":]+"} /port/{r=0; print $3} END{exit r}'
36: PORT=44257
37: /bin/echo if successful port is:44257