1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
|
package Qooxdoo::Services::Tr;
use strict;
use POSIX qw(setsid :sys_wait_h);
use Time::HiRes qw(usleep);
sub GetAccessibility {
return "public";
}
sub launch {
my $error = shift;
my $rounds = shift;
my $delay = shift;
my $host = shift;
defined(my $pid = fork) or do { $error->set_error(101,"Can't fork: $!");return $error};
if ($pid){
open my $x, ">/tmp/tr_session.$pid" or do {
$error->set_error(199,"Opening /tmp/tr_session.$$: $!");
return $error;
};
close ($x);
return $pid;
}
chdir '/' or die "Can't chdir to /: $!";
open STDOUT, ">>/tmp/tr_session.$$"
or die "Can't write to /tmp/tr_session.$$: $!";
open STDIN, '/dev/null' or die "Can't read /dev/null: $!";
setsid or die "Can't start a new session: $!";
open STDERR, '>&STDOUT' or die "Can't dup stdout: $!";
for (my $i = 0; $i<$rounds;$i++){
system "traceroute","-I","-q","1",$host;
# print "SLEEPING\n";
sleep $delay;
}
exit 0;
}
sub get_number {
my $error = shift;
my $data = shift;
$data = 'Undefined' unless defined $data;
if ($data =~ /^(\d+)$/){
return $1;
}
else {
$error->set_error(104,"Expected a number but got: $data");
return $error;
}
}
sub method_stop_tr {
my $error = shift;
my $arg = shift;
my $handle = get_number($error,$arg);
return $handle if ref $handle;
my $data = "/tmp/tr_session.".$handle;
if (-r $data){
warn "Sending kill $handle";
kill('KILL',$handle);
}
}
sub method_run_tr
{
my $error = shift;
my $arg = shift;
my $handle = get_number($error,$arg->{handle});
my $point = get_number($error,$arg->{point});
if ($arg->{host}){
my $delay = get_number($error,$arg->{delay});
return $delay if ref $delay;
my $rounds = get_number($error,$arg->{rounds});
return $rounds if ref $rounds;
$handle = launch ($error,$rounds,$delay,$arg->{host});
$point = 0;
}
return $point if ref $point;
return $handle if ref $handle;
my $data = "/tmp/tr_session.".$handle;
if (open my $fh,$data){
my $again;
my $size;
my $rounds = 0;
do {
$size = -s $fh;
# make sure we reap any zombi instances of tr
# this is especially important when running with speedy of fastcgi
waitpid($handle,WNOHANG);
$again = kill(0, $handle);
usleep(1000*300) if $rounds;
# print STDERR "$again, $handle, $size, $point\n";
$rounds ++;
} while ($again and $point >= $size);
if (seek $fh, $point,0){
my @array;
while (<$fh>){
waitpid($handle,WNOHANG);
/^traceroute to/ && next;
if (/unknown host/){
$error->set_error(108,"Unknown hostname.");
return $error;
}
last unless /\n$/; # stop when we find an incomplete line
if (/^\s*(\d+)\s+(\S+)\s+\((\S+?)\)\s+(\S+)\s+ms/){
my ($hop,$host,$ip,$value) = ($1,$2,$3,$4);
$value = undef unless $value =~ /^\d+(\.\d+)?$/;
push @array, [$hop,$host,$ip,$value];
$point = tell($fh);
}
elsif (/^\s*(\d+)\s+\*/){
push @array, [$1,undef,undef,undef];
$point = tell($fh);
}
elsif (/^SLEEPING/){
push @array, ['SLEEPING'];
$point = tell($fh);
}
else {
$error->set_error(107,"ERROR: $_. See $data for more information.");
return $error;
}
};
close $fh;
unlink $data unless $again;
return {
handle=>$handle,
point=>$point,
output=>\@array,
again=> $again,
}
}
else {
$error->set_error(102,"Seeking in traceroute output to $point: $!");
return $error;
}
}
else {
$error->set_error(103,"Opening $data: $!");
return $error;
}
}
1;
|
