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 $tag = scalar(@ARGV) ? shift : '';
37 my $pid_file = "/var/run/freeside-selfservice-server.$user.pid";
38 #my $pid_file = "/var/run/freeside-selfservice-server.$user.pid"; $FS::UID::datasrc not posible, but should include machine name at least, hmm
40 my $lock_file = "/usr/local/etc/freeside/selfservice.$machine.writelock";
41 open(LOCKFILE,">$lock_file") or die "can't open $lock_file: $!";
45 my $conf = new FS::Conf;
47 my $clientd = "/usr/local/sbin/freeside-selfservice-clientd"; #better name?
51 my($writer,$reader,$error) = (new IO::Handle, new IO::Handle, new IO::Handle);
52 warn "connecting to $machine\n" if $Debug;
54 $ssh_pid = sshopen2($machine,$reader,$writer,$clientd,$tag);
56 # nstore_fd(\*writer, {'hi'=>'there'});
58 warn "entering main loop\n" if $Debug;
60 my $s = IO::Select->new( $reader );
65 warn "waiting for packet from client\n" if $Debug && !$undisp;
67 my @handles = $s->can_read(5);
69 &shutdown if $shutdown;
75 warn "receiving packet from client\n" if $Debug;
77 my $packet = fd_retrieve($reader);
78 warn "packet received\n".
79 join('', map { " $_=>$packet->{$_}\n" } keys %$packet )
82 #prevent runaway forking
84 while ( $kids >= $max_kids ) {
85 warn "WARNING: maximum $kids children reached\n" unless $warnkids++;
90 warn "forking child\n" if $Debug;
91 defined( my $pid = fork ) or die "can't fork: $!";
95 warn "child $pid spawned\n" if $Debug;
99 $FS::UID::dbh->{InactiveDestroy} = 1;
100 forksuidsetup($user);
102 my $type = $packet->{_packet};
103 warn "calling $type handler\n" if $Debug;
104 my $rv = eval { FS::ClientAPI->dispatch($type, $packet); };
106 warn my $error = "WARNING: error dispatching $type: $@";
107 $rv = { _error => $error };
109 $rv->{_token} = $packet->{_token}; #identifier
111 warn "sending response\n" if $Debug;
113 nstore_fd($rv, $writer) or die "FATAL: can't send response: $!";
114 $writer->flush or die "FATAL: can't flush: $!";
117 warn "child exiting\n" if $Debug;
126 # utility subroutines
130 #warn "reaping kids\n";
131 foreach my $pid ( keys %kids ) {
132 my $kid = waitpid($pid, WNOHANG);
138 #warn "done reaping\n";
144 chdir "/" or die "Can't chdir to /: $!";
145 open STDIN, '/dev/null' or die "Can't read /dev/null: $!";
146 defined(my $pid = fork) or die "Can't fork: $!";
148 print "freeside-selfservice-server to $machine started with pid $pid\n"; #logging to $log_file
149 exit unless $pid_file;
150 my $pidfh = new IO::File ">$pid_file" or exit;
151 print $pidfh "$pid\n";
155 # sub REAPER { my $pid = wait; $SIG{CHLD} = \&REAPER; $kids--; }
156 # #sub REAPER { my $pid = wait; $kids--; $SIG{CHLD} = \&REAPER; }
157 # $SIG{CHLD} = \&REAPER;
160 $SIG{HUP} = sub { warn "SIGHUP received; shutting down\n"; $shutdown++; };
161 $SIG{INT} = sub { warn "SIGINT received; shutting down\n"; $shutdown++; };
162 $SIG{TERM} = sub { warn "SIGTERM received; shutting down\n"; $shutdown++; };
163 $SIG{QUIT} = sub { warn "SIGQUIT received; shutting down\n"; $shutdown++; };
164 $SIG{PIPE} = sub { warn "SIGPIPE received; shutting down\n"; $shutdown++; };
166 #false laziness w/freeside-queued
167 my $freeside_gid = scalar(getgrnam('freeside'))
168 or die "can't setgid to freeside group\n";
171 #if freebsd can't setuid(), presumably it can't setgid() either. grr fleabsd
175 $> = $FS::UID::freeside_uid;
176 $< = $FS::UID::freeside_uid;
177 #freebsd is sofa king broken, won't setuid()
179 $> = $FS::UID::freeside_uid;
182 $ENV{HOME} = (getpwuid($>))[7]; #for ssh
183 adminsuidsetup $user;
185 #$log_file = "/usr/local/etc/freeside/selfservice.". $FS::UID::datasrc; #MACHINE NAME
186 $log_file = "/usr/local/etc/freeside/selfservice.$machine.log";
188 open STDOUT, '>/dev/null'
189 or die "Can't write to /dev/null: $!";
190 setsid or die "Can't start a new session: $!";
191 open STDERR, '>&STDOUT' or die "Can't dup stdout: $!";
193 $SIG{__DIE__} = \&_die;
194 $SIG{__WARN__} = \&_logmsg;
196 warn "freeside-selfservice-server starting\n";
201 my $wait = 12; #wait up to 1 minute
202 while ( $kids > 0 && $wait-- ) {
203 warn "waiting for $kids children to terminate";
206 warn "abandoning $kids children" if $kids;
207 kill 'TERM', $ssh_pid if $ssh_pid;
213 unlink $pid_file if -e $pid_file;
218 chomp( my $msg = shift );
219 _do_logmsg( "[server] [". scalar(localtime). "] [$$] $msg\n" );
223 chomp( my $msg = shift );
224 my $log = new IO::File ">>$log_file";
225 flock($log, LOCK_EX);
228 flock($log, LOCK_UN);
234 #flock($writer, LOCK_EX) or die "FATAL: can't lock write stream: $!";
236 flock(LOCKFILE, LOCK_EX) or die "FATAL: can't lock $lock_file: $!";
242 #flock($writer, LOCK_UN) or die "WARNING: can't release write lock: $!";
244 flock(LOCKFILE, LOCK_UN) or die "FATAL: can't unlock $lock_file: $!";
249 die "Usage:\n\n freeside-selfservice-server user machine\n";