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|
#!/usr/bin/perl
# getskyepg.pl: Get EPG data from Sky's web pages
#
# Connects to a running VDR instance via SVDRP, gets the channel data
# for the Sky channels and connects to Sky's web pages to extract the
# EPG data for these channels. The result is sent to VDR via SVDRP.
#
# See the README file for copyright information and how to reach the author.
#
# $Id: getskyepg.pl 1.1 2002/11/10 10:05:17 kls Exp $
use Getopt::Std;
use Time::Local;
$Usage = qq{
Usage: $0 [options]
Options: -d hostname destination hostname (default: localhost)
-p port SVDRP port number (default: 2001)
-S source channel source (default: S28.2E)
-D days days to get EPG for (1..7, default: 2)
};
die $Usage if (!getopts("d:D:hp:S:") || $opt_h);
$Dest = $opt_d || "localhost";
$Port = $opt_p || 2001;
$Source = $opt_S || "S28.2E";
$Days = $opt_D || 2;
$SkyWebPage = "www.ananova.com/tv/frontpage.html";
$WGET = "/usr/bin/wget -q -O-";
$LOGGER = "/usr/bin/logger -t SKYEPG";
$DST = 0; ##XXX TODO find out whether DST is active!
$SecsInDay = 86400;
$MaxFrequency = 1000;
$idxName = 0;
$idxFrequency = 1;
$idxSource = 3;
$idxSid = 9;
Error("days out of range: $Days") unless (1 <= $Days && $Days <= 7);
sub Log
{
system("$LOGGER '@_'");
}
sub Error
{
Log(@_);
die "$0: @_\n";
}
sub GetChannels
{
SVDRPsend("LSTC");
my @channels = ();
for (SVDRPreceive(250)) {
my @a = split(':', substr($_, 4));
if ($a[$idxSource] eq $Source && $a[$idxFrequency] < $MaxFrequency) {
push(@channels, [@a]);
}
}
return @channels;
}
sub GetPage
{
my $channel = shift;
my $day = shift;
my $url = "$SkyWebPage?c=$channel&day=day$day";
Log("reading $url");
my @page = split("\n", `$WGET '$url'`);
Log("received " . ($#page + 1) . " lines");
return @page;
}
# In order to get the duration we need to buffer the last event:
$Id = "";
$Time = 0;
$Title = "";
$Episode = "";
$Descr = "";
sub GetEpgData
{
my ($channel, $channelID) = @_;
my $numEvents = 0;
SVDRPsend("C $channelID");
$Time = 0;
for $day (1 .. $Days) {
my $dt = 0;
my $ap = "";
my @page = GetPage($channel, $day);
for $line (@page) {
if ($line =~ /^<\/tr><tr /) {
# extract information:
my ($time, $title, $episode, $descr) = ($line =~ /^.*?<b>(.*?)<\/b>.*?<b>(.*?)<\/b> *(<i>.*?<\/i>)? *(.*?) *<\/small>/);
my ($h, $m, $a) = ($time =~ /([0-9]+)\.([0-9]+)(.)m/);
# handle am/pm:
$dt = $SecsInDay if ($ap eq "p" && $a eq "a");
$ap = $a;
$h += 12 if ($a eq "p" && $h < 12);
$h -= 12 if ($a eq "a" && $h == 12);
# convert to time_t:
my @gmt = gmtime;
$gmt[0] = 0; # seconds
$gmt[1] = $m; # minutes
$gmt[2] = $h; # hours
$time = timegm(@gmt) + ($day - 1) * $SecsInDay + $dt + $DST;
# create EPG data:
if ($Time) {
$duration = $time - $Time;
SVDRPsend("E $Id $Time $duration");
SVDRPsend("T $Title");
SVDRPsend("S $Episode");
SVDRPsend("D $Descr");
SVDRPsend("e");
$numEvents++;
}
# buffer the last event:
$Id = $time / 60 % 0xFFFF; # this gives us unique ids for every minute of over 6 weeks
$Time = $time;
($Title = $title) =~ s/<[^>]+>//g;
($Episode = $episode) =~ s/<[^>]+>//g;
($Descr = $descr) =~ s/<[^>]+>//g;
}
}
}
SVDRPsend("c");
Log("generated $numEvents EPG events");
}
sub ProcessEpg
{
Log("getting Sky channel definitions");
my @channels = GetChannels();
Error("no Sky channels found") unless @channels;
Log("found " . ($#channels + 1) . " channels");
for (@channels) {
my $channel = @$_[$idxSid];
my $channelID = "@$_[$idxSource]-0-@$_[$idxFrequency]-$channel";
Log("processing channel @$_[0]");
SVDRPsend("PUTE");
SVDRPreceive(354);
GetEpgData($channel, $channelID);
SVDRPsend(".");
SVDRPreceive(250);
}
Log("done");
}
#---------------------------------------------------------------------------
# TODO: make this a Perl module??? What about Error()???
use Socket;
$Timeout = 300; # max. seconds to wait for response
$SIG{ALRM} = sub { Error("timeout"); };
alarm($Timeout);
$iaddr = inet_aton($Dest) || Error("no host: $Dest");
$paddr = sockaddr_in($Port, $iaddr);
$proto = getprotobyname('tcp');
socket(SOCK, PF_INET, SOCK_STREAM, $proto) || Error("socket: $!");
connect(SOCK, $paddr) || Error("connect: $!");
select(SOCK); $| = 1;
SVDRPreceive(220);
ProcessEpg();
SVDRPsend("QUIT");
sub SVDRPsend
{
my $s = shift;
print SOCK "$s\r\n";
}
sub SVDRPreceive
{
my $expect = shift | 0;
my @a = ();
while (<SOCK>) {
s/\s*$//; # 'chomp' wouldn't work with "\r\n"
push(@a, $_);
if (substr($_, 3, 1) ne "-") {
my $code = substr($_, 0, 3);
Error("expected SVDRP code $expect, but received $code") if ($code != $expect);
last;
}
}
return @a;
}
#---------------------------------------------------------------------------
|
