[packages]: revert previous change that was committed without a message
[packages.git] / net / sshtunnel / files / sshtunnel.init
1 #!/bin/sh /etc/rc.common
2
3 START=99
4 STOP=01
5
6 PIDFILE="/tmp/run/sshtunnel"
7
8
9 append_params() {
10         local p; local v; local args;
11         for p in $*; do
12                 eval "v=\$$p"
13                 [ -n "$v" ] && args="$args -o $p=$v"
14         done
15         
16         ARGS_options="${args# *}"
17 }
18
19 append_string() {
20         local varname="$1"; local add="$2"; local separator="${3:- }"; local actual
21         eval "actual=\$$varname"
22
23         new="${actual:+$actual$separator}$add"
24         eval "$varname=\$new"
25 }
26
27 load_tunnelR() {
28         config_get section_server $1 server
29         [ "$server" = "$section_server" ] || return 0 # continue to read next section if this is not for the current server
30         let count++ # count nr of valid sections to make sure there are at least one
31
32         config_get remoteaddress $1 remoteaddress "*"
33         config_get remoteport   $1 remoteport
34         config_get localaddress $1 localaddress
35         config_get localport    $1 localport
36         
37         [ "$remoteport" -gt 0 ] || append_string "error" "[tunnelR: $1]remoteport must be a positive integer" "; "
38         [ "$localport" -gt 0 ]  || append_string "error" "[tunnelR: $1]localport must be a positive integer" "; "
39         [ -n "$error" ] && return 1
40
41         append_string "ARGS_tunnels" "-R $remoteaddress:$remoteport:$localaddress:$localport"
42 }
43
44 load_tunnelL() {
45         config_get section_server $1 server
46         [ "$server" = "$section_server" ] || return 0 # continue to read next section if this is not for the current server
47         let count++ # count nr of valid sections to make sure there are at least one
48
49         config_get localaddress $1 localaddress "*"     
50         config_get localport    $1 localport
51         config_get remoteaddress $1 remoteaddress
52         config_get remoteport   $1 remoteport
53
54         [ "$remoteport" -gt 0 ] || append_string "error" "[tunnelL: $1]remoteport must be a positive integer" "; "
55         [ "$localport" -gt 0 ]  || append_string "error" "[tunnelL: $1]localport must be a positive integer" "; "
56         [ -n "$error" ] && return 1
57
58         append_string "ARGS_tunnels" "-L $localaddress:$localport:$remoteaddress:$remoteport"
59 }
60
61 load_tunnelD() {
62         config_get section_server $1 server
63         [ "$server" = "$section_server" ] || return 0 # continue to read next section if this is not for the current server
64         let count++ # count nr of valid sections to make sure there are at least one
65
66         config_get localaddress $1 localaddress "*"
67         config_get localport    $1 localport
68
69         [ "$remoteport" -gt 0 ] || append_string "error" "[tunnelD: $1]remoteport must be a positive integer" "; "
70         [ "$localport" -gt 0 ]  || append_string "error" "[tunnelD: $1]localport must be a positive integer" "; "
71         [ -n "$error" ] && return 1
72
73         append_string "ARGS_tunnels" "-D $localaddress:$localport"
74 }
75
76 load_tunnelW() {
77         config_get section_server $1 server
78         [ "$server" = "$section_server" ] || return 0 # continue to read next section if this is not for the current server
79         let count++ # count nr of valid sections to make sure there are at least one
80
81         config_get localdev     $1 localdev "*"
82         config_get remotedev    $1 remotedev "*"
83         config_get vpntype      $1 vpntype "*"
84
85         [ "$vpntype" == "ethernet" ] || [ "$vpntype" == "point-to-point" ] || append_string "error" "[tunnelW: $1] vpntype must be \"ethernet\" (tap) or \"pointopoint\" (tun)" "; "
86         [ "$localdev" == "any" ] || [ "$localdev" -ge 0 ] || append_string "error" "[tunnelW: $1] localdev must be an integer or \"any\"" "; "
87         [ "$remotedev" == "any" ] || [ "$remotedev" -ge 0 ] || append_string "error" "[tunnelW: $1] remotedev must be an integer or \"any\"" "; "
88         [ "$user" == "root" ] || logger -p user.warn -t "sshtunnel" "warning: root is required unless the tunnel device has been created manually"
89         [ -n "$error" ] && return 1
90
91         append_string "ARGS_tunnels" "-w $localdev:$remotedev -o Tunnel=$vpntype"
92 }
93
94 load_server() {
95         server="$1"
96
97         config_get user         $1 user
98         config_get hostname     $1 hostname
99         config_get port         $1 port         "22"
100         config_get retrydelay   $1 retrydelay   "60"
101         config_get PKCS11Provider       $1 PKCS11Provider
102         config_get CheckHostIP          $1 CheckHostIP
103         config_get Compression          $1 Compression
104         config_get CompressionLevel     $1 CompressionLevel
105         config_get IdentityFile         $1 IdentityFile
106         config_get LogLevel             $1 LogLevel
107         config_get ServerAliveCountMax  $1 ServerAliveCountMax
108         config_get ServerAliveInterval  $1 ServerAliveInterval
109         config_get StrictHostKeyChecking $1 StrictHostKeyChecking
110         config_get TCPKeepAlive         $1 TCPKeepAlive
111         config_get VerifyHostKeyDNS     $1 VerifyHostKeyDNS
112                 
113         error=""
114         [ -n "$user" ] \
115                 || append_string "error" "user is not set" "; "
116         [ -n "$hostname" ] \
117                 || append_string "error" "hostname is not set" "; "
118         [ "$retrydelay" -ge 1 ] \
119                 || append_string "error" "retrydelay must be a positive integer" "; "
120         [ -z "$PKCS11Provider" -o -f "$PKCS11Provider" ] \
121                 || append_string "error" "PKCS11Provider must be a pkcs11 shared library accessible" "; "
122         [ -z "$CheckHostIP" -o "$CheckHostIP"="yes" -o "$CheckHostIP"="no" ] \
123                 || append_string "error" "CheckHostIP must be 'yes' or 'no'" "; "
124         [ -z "$Compression" -o "$Compression"="yes" -o "$Compression"="no" ] \
125                 || append_string "error" "Compression must be 'yes' or 'no'" "; "
126         [ -z "$CompressionLevel" ] || [ "$CompressionLevel" -ge 1 -a "$CompressionLevel" -le 9 ] \
127                 || append_string "error" "CompressionLevel must be between 1 and 9" "; "
128         [ -z "$IdentityFile" -o -f "$IdentityFile" ] \
129                 || append_string "error" "IdentityFile $IdentityFile not accessible" "; "       
130         [ -z "$LogLevel" -o "$LogLevel" = "QUIET" -o "$LogLevel" = "FATAL" -o "$LogLevel" = "ERROR" -o \
131                 "$LogLevel" = "INFO" -o "$LogLevel" = "VERBOSE" -o "$LogLevel" = "DEBUG" -o \
132                 "$LogLevel" = "DEBUG1" -o "$LogLevel" = "DEBUG2" -o "$LogLevel" = "DEBUG3" ] \
133                 || append_string "error" "LogLevel is invalid" "; "
134         [ -z "$ServerAliveCountMax" ] || [ "$ServerAliveCountMax" -ge 1 ] \
135                 || append_string "error" "ServerAliveCountMax must be greater or equal than 1" "; "
136         [ -z "$ServerAliveInterval" ] || [ "$ServerAliveInterval" -ge 0 ] \
137                 || append_string "error" "ServerAliveInterval must be greater or equal than 0" "; "
138         [ -z "$StrictHostKeyChecking" -o "$StrictHostKeyChecking" = "yes" -o "$StrictHostKeyChecking" = "ask" -o "$StrictHostKeyChecking" = "no" ] \
139                 || append_string "error" "StrictHostKeyChecking must be 'yes', 'ask' or 'no'" "; "
140         [ -z "$TCPKeepAlive" -o "$TCPKeepAlive" = "yes" -o "$TCPKeepAlive" = "no" ] \
141                 || append_string "error" "TCPKeepAlive must be 'yes' or 'no'" "; "
142         [ -z "$VerifyHostKeyDNS" -o "$VerifyHostKeyDNS" = "yes" -o "$VerifyHostKeyDNS" = "no" ] \
143                 || append_string "error" "VerifyHostKeyDNS must be 'yes' or 'no'" "; "
144
145         [ -n "$error" ] && { logger -p user.err -t "sshtunnel" "tunnels to $server not started - $error"; return; }
146         
147
148         ARGS=""
149         ARGS_options=""
150         ARGS_tunnels=""
151
152         count=0
153         config_foreach load_tunnelR tunnelR && config_foreach load_tunnelL tunnelL && config_foreach load_tunnelD tunnelD
154         [ -n "$error" ]         && { logger -p user.err -t "sshtunnel" "tunnels to $server not started - $error"; return; }
155         [ "$count" -eq 0 ]      && { logger -p user.err -t "sshtunnel" "tunnels to $server not started - no tunnels defined"; return; }
156
157         append_params CheckHostIP Compression CompressionLevel IdentityFile LogLevel PKCS11Provider ServerAliveCountMax ServerAliveInterval StrictHostKeyChecking TCPKeepAlive VerifyHostKeyDNS
158         ARGS="$ARGS_options -o ExitOnForwardFailure=yes -o BatchMode=yes -nN $ARGS_tunnels -p $port $user@$hostname"
159
160         /usr/bin/sshtunnel.sh "$ARGS" "$retrydelay" "$server" &
161         echo $! >> "${PIDFILE}.pids"
162         logger -p user.info -t "sshtunnel" "started tunnels to $server (pid=$!;retrydelay=$retrydelay)" 
163 }
164
165 stop() {
166         if [ -f "$PIDFILE".pids ]
167         then
168                 logger -p user.info -t "sshtunnel" "stopping all tunnels"
169                 
170                 while read pid
171                 do
172                         kill "$pid"     # kill mother process first
173
174                         [ -f "${PIDFILE}_${pid}.pid" ] && { # if ssh was running, kill it also (mother process could be in retry wait)
175                                 start-stop-daemon -K -p "${PIDFILE}_${pid}.pid"
176                                 rm "${PIDFILE}_${pid}.pid"
177                         }
178                         
179                         logger -p daemon.info -t "sshtunnel[$pid]" "tunnel stopped"
180                         
181                 done < "${PIDFILE}.pids"
182
183                 rm "${PIDFILE}.pids"
184
185                 logger -p user.info -t "sshtunnel" "all tunnels stopped"
186         else
187                 logger -p user.info -t "sshtunnel" "no tunnels running"
188         fi
189 }
190
191 start() {
192         [ -f "${PIDFILE}.pids" ] && stop
193         
194         config_load sshtunnel
195         if [ -n "$(uci show sshtunnel.@server[0])" ] # at least one server section exists
196         then        
197                 logger -p user.info -t "sshtunnel" "starting all tunnels"
198                 config_foreach load_server server       
199                 logger -p user.info -t "sshtunnel" "all tunnels started"        
200         else
201                 logger -p user.info -t "sshtunnel" "no servers defined"
202         fi
203 }