101 lines
2.2 KiB
Perl
Executable File
101 lines
2.2 KiB
Perl
Executable File
#! /usr/bin/perl -w
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# 程式檔名: urlcheck
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# 程式說明: Selima 檢查網址程式
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# 程式作者: 依瑪貓 imacat <imacat@mail.imacat.idv.tw>
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# 初稿日期: 2004-11-06
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# 版權字樣: 版權所有 (c) 2004 依瑪貓
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use 5.008;
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use strict;
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use warnings;
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use threads;
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use threads::shared;
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# Prototype declaration
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sub main();
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sub check_urls();
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sub check_urls_nonthread();
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sub check_urls_in_a_thread();
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sub is_reachable($);
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use Config qw(%Config);
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use LWP::UserAgent;
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use Net::Telnet;
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use URI;
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our ($CURINDEX, @URLS) : shared;
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$CURINDEX = 0;
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@URLS = qw();
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main;
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exit 0;
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sub main() {
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local ($_, %_);
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@URLS = <STDIN>;
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chomp foreach @URLS;
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check_urls;
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print join "", map "$_\n", @URLS;
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return;
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}
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# check_urls: Proform URL checks (with threading)
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sub check_urls() {
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local ($_, %_);
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# Run check_urls_nonthread() if ithread is not available
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return check_urls_nonthread
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if !defined $Config{"useithreads"};
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# Start the thread workers
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for ($_ = 0, @_ = qw(); $_ < 10; $_++) {
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push @_, threads->new(\&check_urls_in_a_thread)
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}
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# Wait for everyone to end
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$_->join foreach @_;
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# Return the result
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return;
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}
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# check_urls_nonthread: Proform URL checks without threading
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sub check_urls_nonthread() {
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local ($_, %_);
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@URLS = map is_reachable($_), @URLS;
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return;
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}
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# check_urls_in_a_thread: Proform URL checks in a thread
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sub check_urls_in_a_thread() {
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local ($_, %_);
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# Check until the end
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while (($_ = $CURINDEX++) < @URLS) {
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$URLS[$_] = is_reachable($URLS[$_]);
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}
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return;
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}
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# is_reachable: Check if the target of an URL is reachable
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sub is_reachable($) {
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local ($_, %_);
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my ($uri, $UA, $r);
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$_ = $_[0];
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# Check if it is available
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# LWP::UserAgent cannot handle telnet. We check it with Net::Telnet.
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if (/^telnet:\/\//) {
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$uri = new URI($_);
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%_ = (
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Host => $uri->host,
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Port => $uri->port,
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);
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eval { new Net::Telnet(%_) };
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return ($@ eq ""? 1: 0);
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# Use LWP::UserAgent
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} else {
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$UA = new LWP::UserAgent;
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$UA->timeout(20);
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$r = $UA->get($_);
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return (!$r->is_error? 1: 0);
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}
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}
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