blob: 184cd9061645f3284caab7958e675985b7b8454b (
plain)
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
|
#! /usr/bin/perl
# vim:ts=8:sw=8
use strict;
use warnings;
use utf8;
use DBI;
use Data::Dumper;
use JSON;
use nms;
package nms::web;
use base 'Exporter';
our %get_params;
our %json;
our @EXPORT = qw(finalize_output json $dbh db_safe_quote %get_params get_input %json);
our $dbh;
our $now;
our $when;
our %cc;
sub get_input {
my $in = "";
while(<STDIN>) { $in .= $_; }
return $in;
}
# Print cache-control from %cc
sub printcc {
my $line = "";
my $first = "";
foreach my $tmp (keys(%cc)) {
$line .= $first . $tmp . "=" . $cc{$tmp};
$first = ", ";
}
print 'Cache-Control: ' . $line . "\n";
}
sub db_safe_quote {
my $word = $_[0];
my $term = $get_params{$word};
if (!defined($term)) {
if(defined($_[1])) {
$term = $_[1];
} else {
die "Missing CGI param $word";
}
}
return $dbh->quote($term) || die;
}
# returns a valid $when statement
# Also sets cache-control headers if time is overridden
sub setwhen {
my $when;
$now = "now()";
if (defined($get_params{'now'})) {
$now = db_safe_quote('now') . "::timestamp ";
$cc{'max-age'} = "3600";
}
$when = " time > " . $now . " - '5m'::interval and time < " . $now . " ";
return $when;
}
sub finalize_output {
my $query;
$query = $dbh->prepare ('select ' . $now . ' as time;');
$query->execute();
$json{'time'} = $query->fetchrow_hashref()->{'time'};
printcc;
print "Content-Type: text/jso; charset=utf-8\n\n";
print JSON::XS::encode_json(\%json);
print "\n";
}
sub populate_params {
foreach my $hdr (split("&",$ENV{'QUERY_STRING'} || "")) {
my ($key, $value) = split("=",$hdr,"2");
$get_params{$key} = $value;
}
}
BEGIN {
$cc{'stale-while-revalidate'} = "3600";
$cc{'max-age'} = "20";
$dbh = nms::db_connect();
populate_params();
$when = setwhen();
}
1;
|
