3 # freeside-selfservice-server
5 # alas, much false laziness with freeside-queued and fs_signup_server. at
6 # least it is slated to replace fs_{signup,passwd,mailadmin}_server
7 # should probably generalize the version in here, or better yet use
8 # Proc::Daemon or somesuch
11 use vars qw( $Debug %kids $kids $max_kids $shutdown $log_file $ssh_pid );
12 use subs qw( lock_write unlock_write );
14 use POSIX qw(:sys_wait_h setsid);
18 use Storable qw(nstore_fd fd_retrieve);
19 use Net::SSH qw(sshopen2);
20 use FS::UID qw(adminsuidsetup forksuidsetup);
27 $Debug = 2; # >= 2 will log packet contents, including potentially compromising
34 my $user = shift or die &usage;
35 my $machine = shift or die &usage;
36 my $pid_file = "/var/run/freeside-selfservice-server.$user.pid";
37 #my $pid_file = "/var/run/freeside-selfservice-server.$user.pid"; $FS::UID::datasrc not posible, but should include machine name at least, hmm
39 my $lock_file = "/usr/local/etc/freeside/selfservice.$machine.writelock";
40 open(LOCKFILE,">$lock_file") or die "can't open $lock_file: $!";
44 my $conf = new FS::Conf;
46 if ($conf->exists('selfservice_server-quiet')) {
47 $FS::cust_bill::quiet = 1;
48 $FS::cust_pkg::quiet = 1;
51 my $clientd = "/usr/local/sbin/freeside-selfservice-clientd"; #better name?
55 my($writer,$reader,$error) = (new IO::Handle, new IO::Handle, new IO::Handle);
56 warn "connecting to $machine\n" if $Debug;
58 $ssh_pid = sshopen2($machine,$reader,$writer,$clientd);
60 # nstore_fd(\*writer, {'hi'=>'there'});
62 warn "entering main loop\n" if $Debug;
64 my $s = IO::Select->new( $reader );
69 warn "waiting for packet from client\n" if $Debug && !$undisp;
71 my @handles = $s->can_read(5);
73 &shutdown if $shutdown;
79 warn "receiving packet from client\n" if $Debug;
81 my $packet = fd_retrieve($reader);
82 warn "packet received\n".
83 join('', map { " $_=>$packet->{$_}\n" } keys %$packet )
86 #prevent runaway forking
88 while ( $kids >= $max_kids ) {
89 warn "WARNING: maximum $kids children reached\n" unless $warnkids++;
94 warn "forking child\n" if $Debug;
95 defined( my $pid = fork ) or die "can't fork: $!";
99 warn "child $pid spawned\n" if $Debug;
103 $FS::UID::dbh->{InactiveDestroy} = 1;
104 forksuidsetup($user);
106 my $type = $packet->{_packet};
107 warn "calling $type handler\n" if $Debug;
108 my $rv = eval { FS::ClientAPI->dispatch($type, $packet); };
110 warn my $error = "WARNING: error dispatching $type: $@";
111 $rv = { _error => $error };
113 $rv->{_token} = $packet->{_token}; #identifier
115 warn "sending response\n" if $Debug;
117 nstore_fd($rv, $writer) or die "FATAL: can't send response: $!";
118 $writer->flush or die "FATAL: can't flush: $!";
121 warn "child exiting\n" if $Debug;
130 # utility subroutines
134 #warn "reaping kids\n";
135 foreach my $pid ( keys %kids ) {
136 my $kid = waitpid($pid, WNOHANG);
142 #warn "done reaping\n";
148 chdir "/" or die "Can't chdir to /: $!";
149 open STDIN, '/dev/null' or die "Can't read /dev/null: $!";
150 defined(my $pid = fork) or die "Can't fork: $!";
152 print "freeside-selfservice-server to $machine started with pid $pid\n"; #logging to $log_file
153 exit unless $pid_file;
154 my $pidfh = new IO::File ">$pid_file" or exit;
155 print $pidfh "$pid\n";
159 # sub REAPER { my $pid = wait; $SIG{CHLD} = \&REAPER; $kids--; }
160 # #sub REAPER { my $pid = wait; $kids--; $SIG{CHLD} = \&REAPER; }
161 # $SIG{CHLD} = \&REAPER;
164 $SIG{HUP} = sub { warn "SIGHUP received; shutting down\n"; $shutdown++; };
165 $SIG{INT} = sub { warn "SIGINT received; shutting down\n"; $shutdown++; };
166 $SIG{TERM} = sub { warn "SIGTERM received; shutting down\n"; $shutdown++; };
167 $SIG{QUIT} = sub { warn "SIGQUIT received; shutting down\n"; $shutdown++; };
168 $SIG{PIPE} = sub { warn "SIGPIPE received; shutting down\n"; $shutdown++; };
170 #false laziness w/freeside-queued
171 my $freeside_gid = scalar(getgrnam('freeside'))
172 or die "can't setgid to freeside group\n";
175 #if freebsd can't setuid(), presumably it can't setgid() either. grr fleabsd
179 $> = $FS::UID::freeside_uid;
180 $< = $FS::UID::freeside_uid;
181 #freebsd is sofa king broken, won't setuid()
183 $> = $FS::UID::freeside_uid;
186 $ENV{HOME} = (getpwuid($>))[7]; #for ssh
187 adminsuidsetup $user;
189 #$log_file = "/usr/local/etc/freeside/selfservice.". $FS::UID::datasrc; #MACHINE NAME
190 $log_file = "/usr/local/etc/freeside/selfservice.$machine.log";
192 open STDOUT, '>/dev/null'
193 or die "Can't write to /dev/null: $!";
194 setsid or die "Can't start a new session: $!";
195 open STDERR, '>&STDOUT' or die "Can't dup stdout: $!";
197 $SIG{__DIE__} = \&_die;
198 $SIG{__WARN__} = \&_logmsg;
200 warn "freeside-selfservice-server starting\n";
205 my $wait = 12; #wait up to 1 minute
206 while ( $kids > 0 && $wait-- ) {
207 warn "waiting for $kids children to terminate";
210 warn "abandoning $kids children" if $kids;
211 kill 'TERM', $ssh_pid if $ssh_pid;
217 unlink $pid_file if -e $pid_file;
222 chomp( my $msg = shift );
223 _do_logmsg( "[server] [". scalar(localtime). "] [$$] $msg\n" );
227 chomp( my $msg = shift );
228 my $log = new IO::File ">>$log_file";
229 flock($log, LOCK_EX);
232 flock($log, LOCK_UN);
238 #flock($writer, LOCK_EX) or die "FATAL: can't lock write stream: $!";
240 flock(LOCKFILE, LOCK_EX) or die "FATAL: can't lock $lock_file: $!";
246 #flock($writer, LOCK_UN) or die "WARNING: can't release write lock: $!";
248 flock(LOCKFILE, LOCK_UN) or die "FATAL: can't unlock $lock_file: $!";
253 die "Usage:\n\n freeside-selfservice-server user machine\n";