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 my $clientd = "/usr/local/sbin/freeside-selfservice-clientd"; #better name?
50 my($writer,$reader,$error) = (new IO::Handle, new IO::Handle, new IO::Handle);
51 warn "connecting to $machine\n" if $Debug;
53 $ssh_pid = sshopen2($machine,$reader,$writer,$clientd);
55 # nstore_fd(\*writer, {'hi'=>'there'});
57 warn "entering main loop\n" if $Debug;
59 my $s = IO::Select->new( $reader );
64 warn "waiting for packet from client\n" if $Debug && !$undisp;
66 my @handles = $s->can_read(5);
68 &shutdown if $shutdown;
74 warn "receiving packet from client\n" if $Debug;
76 my $packet = fd_retrieve($reader);
77 warn "packet received\n".
78 join('', map { " $_=>$packet->{$_}\n" } keys %$packet )
81 #prevent runaway forking
83 while ( $kids >= $max_kids ) {
84 warn "WARNING: maximum $kids children reached\n" unless $warnkids++;
89 warn "forking child\n" if $Debug;
90 defined( my $pid = fork ) or die "can't fork: $!";
94 warn "child $pid spawned\n" if $Debug;
98 $FS::UID::dbh->{InactiveDestroy} = 1;
101 my $type = $packet->{_packet};
102 warn "calling $type handler\n" if $Debug;
103 my $rv = eval { FS::ClientAPI->dispatch($type, $packet); };
105 warn my $error = "WARNING: error dispatching $type: $@";
106 $rv = { _error => $error };
108 $rv->{_token} = $packet->{_token}; #identifier
110 warn "sending response\n" if $Debug;
112 nstore_fd($rv, $writer) or die "FATAL: can't send response: $!";
113 $writer->flush or die "FATAL: can't flush: $!";
116 warn "child exiting\n" if $Debug;
125 # utility subroutines
129 #warn "reaping kids\n";
130 foreach my $pid ( keys %kids ) {
131 my $kid = waitpid($pid, WNOHANG);
137 #warn "done reaping\n";
143 chdir "/" or die "Can't chdir to /: $!";
144 open STDIN, '/dev/null' or die "Can't read /dev/null: $!";
145 defined(my $pid = fork) or die "Can't fork: $!";
147 print "freeside-selfservice-server to $machine started with pid $pid\n"; #logging to $log_file
148 exit unless $pid_file;
149 my $pidfh = new IO::File ">$pid_file" or exit;
150 print $pidfh "$pid\n";
154 # sub REAPER { my $pid = wait; $SIG{CHLD} = \&REAPER; $kids--; }
155 # #sub REAPER { my $pid = wait; $kids--; $SIG{CHLD} = \&REAPER; }
156 # $SIG{CHLD} = \&REAPER;
159 $SIG{HUP} = sub { warn "SIGHUP received; shutting down\n"; $shutdown++; };
160 $SIG{INT} = sub { warn "SIGINT received; shutting down\n"; $shutdown++; };
161 $SIG{TERM} = sub { warn "SIGTERM received; shutting down\n"; $shutdown++; };
162 $SIG{QUIT} = sub { warn "SIGQUIT received; shutting down\n"; $shutdown++; };
163 $SIG{PIPE} = sub { warn "SIGPIPE received; shutting down\n"; $shutdown++; };
165 #false laziness w/freeside-queued
166 my $freeside_gid = scalar(getgrnam('freeside'))
167 or die "can't setgid to freeside group\n";
170 #if freebsd can't setuid(), presumably it can't setgid() either. grr fleabsd
174 $> = $FS::UID::freeside_uid;
175 $< = $FS::UID::freeside_uid;
176 #freebsd is sofa king broken, won't setuid()
178 $> = $FS::UID::freeside_uid;
181 $ENV{HOME} = (getpwuid($>))[7]; #for ssh
182 adminsuidsetup $user;
184 #$log_file = "/usr/local/etc/freeside/selfservice.". $FS::UID::datasrc; #MACHINE NAME
185 $log_file = "/usr/local/etc/freeside/selfservice.$machine.log";
187 open STDOUT, '>/dev/null'
188 or die "Can't write to /dev/null: $!";
189 setsid or die "Can't start a new session: $!";
190 open STDERR, '>&STDOUT' or die "Can't dup stdout: $!";
192 $SIG{__DIE__} = \&_die;
193 $SIG{__WARN__} = \&_logmsg;
195 warn "freeside-selfservice-server starting\n";
200 my $wait = 12; #wait up to 1 minute
201 while ( $kids > 0 && $wait-- ) {
202 warn "waiting for $kids children to terminate";
205 warn "abandoning $kids children" if $kids;
206 kill 'TERM', $ssh_pid if $ssh_pid;
212 unlink $pid_file if -e $pid_file;
217 chomp( my $msg = shift );
218 _do_logmsg( "[server] [". scalar(localtime). "] [$$] $msg\n" );
222 chomp( my $msg = shift );
223 my $log = new IO::File ">>$log_file";
224 flock($log, LOCK_EX);
227 flock($log, LOCK_UN);
233 #flock($writer, LOCK_EX) or die "FATAL: can't lock write stream: $!";
235 flock(LOCKFILE, LOCK_EX) or die "FATAL: can't lock $lock_file: $!";
241 #flock($writer, LOCK_UN) or die "WARNING: can't release write lock: $!";
243 flock(LOCKFILE, LOCK_UN) or die "FATAL: can't unlock $lock_file: $!";
248 die "Usage:\n\n freeside-selfservice-server user machine\n";