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 );
13 use POSIX qw(:sys_wait_h setsid);
17 use Storable qw(nstore_fd fd_retrieve);
18 use Net::SSH qw(sshopen2);
19 use FS::UID qw(adminsuidsetup forksuidsetup);
22 $Debug = 2; # >= 2 will log packet contents, including potentially compromising
29 my $user = shift or die &usage;
30 my $machine = shift or die &usage;
31 my $pid_file = "/var/run/freeside-selfservice-server.$user.pid";
32 #my $pid_file = "/var/run/freeside-selfservice-server.$user.pid"; $FS::UID::datasrc not posible, but should include machine name at least, hmm
36 my $clientd = "/usr/local/sbin/freeside-selfservice-clientd"; #better name?
40 my($writer,$reader,$error) = (new IO::Handle, new IO::Handle, new IO::Handle);
41 warn "connecting to $machine\n" if $Debug;
43 $ssh_pid = sshopen2($machine,$reader,$writer,$clientd);
45 # nstore_fd(\*writer, {'hi'=>'there'});
47 warn "entering main loop\n" if $Debug;
49 my $s = IO::Select->new( $reader );
54 warn "waiting for packet from client\n" if $Debug && !$undisp;
56 my @handles = $s->can_read(5);
58 &shutdown if $shutdown;
64 warn "receiving packet from client\n" if $Debug;
66 my $packet = fd_retrieve($reader);
67 warn "packet received\n".
68 join('', map { " $_=>$packet->{$_}\n" } keys %$packet )
71 #prevent runaway forking
73 while ( $kids >= $max_kids ) {
74 warn "WARNING: maximum $kids children reached\n" unless $warnkids++;
79 warn "forking child\n" if $Debug;
80 defined( my $pid = fork ) or die "can't fork: $!";
84 warn "child $pid spawned\n" if $Debug;
88 $FS::UID::dbh->{InactiveDestroy} = 1;
91 my $type = $packet->{_packet};
92 warn "calling $type handler\n" if $Debug;
93 my $rv = eval { FS::ClientAPI->dispatch($type, $packet); };
95 warn my $error = "WARNING: error dispatching $type: $@";
96 $rv = { _error => $error };
98 $rv->{_token} = $packet->{_token}; #identifier
100 warn "sending response\n" if $Debug;
101 flock($writer, LOCK_EX) or die "FATAL: can't lock write stream: $!";
102 nstore_fd($rv, $writer) or die "FATAL: can't send response: $!";
103 $writer->flush or die "FATAL: can't flush: $!";
104 flock($writer, LOCK_UN) or die "WARNING: can't release write lock: $!";
106 warn "child exiting\n" if $Debug;
115 # utility subroutines
119 #warn "reaping kids\n";
120 foreach my $pid ( keys %kids ) {
121 my $kid = waitpid($pid, WNOHANG);
127 #warn "done reaping\n";
133 chdir "/" or die "Can't chdir to /: $!";
134 open STDIN, '/dev/null' or die "Can't read /dev/null: $!";
135 defined(my $pid = fork) or die "Can't fork: $!";
137 print "freeside-selfservice-server to $machine started with pid $pid\n"; #logging to $log_file
138 exit unless $pid_file;
139 my $pidfh = new IO::File ">$pid_file" or exit;
140 print $pidfh "$pid\n";
144 # sub REAPER { my $pid = wait; $SIG{CHLD} = \&REAPER; $kids--; }
145 # #sub REAPER { my $pid = wait; $kids--; $SIG{CHLD} = \&REAPER; }
146 # $SIG{CHLD} = \&REAPER;
149 $SIG{HUP} = sub { warn "SIGHUP received; shutting down\n"; $shutdown++; };
150 $SIG{INT} = sub { warn "SIGINT received; shutting down\n"; $shutdown++; };
151 $SIG{TERM} = sub { warn "SIGTERM received; shutting down\n"; $shutdown++; };
152 $SIG{QUIT} = sub { warn "SIGQUIT received; shutting down\n"; $shutdown++; };
153 $SIG{PIPE} = sub { warn "SIGPIPE received; shutting down\n"; $shutdown++; };
155 #false laziness w/freeside-queued
156 my $freeside_gid = scalar(getgrnam('freeside'))
157 or die "can't setgid to freeside group\n";
160 #if freebsd can't setuid(), presumably it can't setgid() either. grr fleabsd
164 $> = $FS::UID::freeside_uid;
165 $< = $FS::UID::freeside_uid;
166 #freebsd is sofa king broken, won't setuid()
168 $> = $FS::UID::freeside_uid;
171 $ENV{HOME} = (getpwuid($>))[7]; #for ssh
172 adminsuidsetup $user;
174 #$log_file = "/usr/local/etc/freeside/selfservice.". $FS::UID::datasrc; #MACHINE NAME
175 $log_file = "/usr/local/etc/freeside/selfservice.$machine.log";
177 open STDOUT, '>/dev/null'
178 or die "Can't write to /dev/null: $!";
179 setsid or die "Can't start a new session: $!";
180 open STDERR, '>&STDOUT' or die "Can't dup stdout: $!";
182 $SIG{__DIE__} = \&_die;
183 $SIG{__WARN__} = \&_logmsg;
185 warn "freeside-selfservice-server starting\n";
190 my $wait = 12; #wait up to 1 minute
191 while ( $kids > 0 && $wait-- ) {
192 warn "waiting for $kids children to terminate";
195 warn "abandoning $kids children" if $kids;
196 kill 'TERM', $ssh_pid if $ssh_pid;
202 unlink $pid_file if -e $pid_file;
207 chomp( my $msg = shift );
208 _do_logmsg( "[server] [". scalar(localtime). "] [$$] $msg\n" );
212 chomp( my $msg = shift );
213 my $log = new IO::File ">>$log_file";
214 flock($log, LOCK_EX);
217 flock($log, LOCK_UN);
222 die "Usage:\n\n fs_signup_server user machine\n";