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-rwxr-xr-xperl/checklinks.pl.in336
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-#!@PERL@
-#
-# checklinks.pl
-#
-# This script extracts all links from a HTML page and checks their validity.
-# Written to use 'curl' for URL checking.
-#
-# Author: Daniel Stenberg <Daniel.Stenberg@sth.frontec.se>
-# Version: 0.7 Sept 30, 1998
-#
-# HISTORY
-#
-# 0.5 - Cuts off the #-part from links before checking.
-#
-# 0.6 - Now deals with error codes 3XX better and follows the Location:
-# properly.
-# - Added the -x flag that only checks http:// -links
-#
-# 0.7 - Ok, http://www.viunga.se/main.html didn't realize this had no path
-# but a document. Now it does.
-#
-#
-
-$in="";
-
- argv:
-if($ARGV[0] eq "-v" ) {
- $verbose = 1;
- shift @ARGV;
- goto argv;
-}
-elsif($ARGV[0] eq "-i" ) {
- $usestdin = 1;
- shift @ARGV;
- goto argv;
-}
-elsif($ARGV[0] eq "-l" ) {
- $linenumber = 1;
- shift @ARGV;
- goto argv;
-}
-elsif($ARGV[0] eq "-h" ) {
- $help = 1;
- shift @ARGV;
- goto argv;
-}
-elsif($ARGV[0] eq "-x" ) {
- $external = 1;
- shift @ARGV;
- goto argv;
-}
-
-$geturl = $ARGV[0];
-
-if(($geturl eq "") || $help) {
- print "Usage: $0 [-hilvx] <full URL>\n",
- " Use a traling slash for directory URLs!\n",
- " -h This help text\n",
- " -i Read the initial page from stdin\n",
- " -l Line number report for BAD links\n",
- " -v Verbose mode\n",
- " -x Check non-local (external?) links only\n";
- exit;
-}
-
-if($ARGV[1] eq "-") {
- print "We use stdin!\n";
- $usestdin = 1;
-}
-
-# This is necessary from where I tried this:
-#$proxy =" -x 194.237.142.41:80";
-
-# linkchecker, URL will be appended to the right of this command line
-# this is the one using HEAD:
-$linkcheck = "curl -s -m 20 -I$proxy";
-
-# as a second attempt, this will be used. This is not using HEAD but will
-# get the whole frigging document!
-$linkcheckfull = "curl -s -m 20 -i$proxy";
-
-# htmlget, URL will be appended to the right of this command line
-$htmlget = "curl -s$proxy";
-
-# Parse the input URL and split it into the relevant parts:
-
-sub SplitURL {
- my $inurl = $_[0];
-
- if($inurl=~ /^([^:]+):\/\/([^\/]*)\/(.*)\/(.*)/ ) {
- $getprotocol = $1;
- $getserver = $2;
- $getpath = $3;
- $getdocument = $4;
- }
- elsif ($inurl=~ /^([^:]+):\/\/([^\/]*)\/(.*)/ ) {
- $getprotocol = $1;
- $getserver = $2;
- $getpath = $3;
- $getdocument = "";
-
- if($getpath !~ /\//) {
- $getpath ="";
- $getdocument = $3;
- }
-
- }
- elsif ($inurl=~ /^([^:]+):\/\/(.*)/ ) {
- $getprotocol = $1;
- $getserver = $2;
- $getpath = "";
- $getdocument = "";
- }
- else {
- print "Couldn't parse the specified URL, retry please!\n";
- exit;
- }
-}
-
-&SplitURL($geturl);
-
-#print "protocol = $getprotocol\n";
-#print "server = $getserver\n";
-#print "path = $getpath\n";
-#print "document = $getdocument\n";
-#exit;
-
-if(!$usestdin) {
- open(HEADGET, "$linkcheck $geturl|") ||
- die "Couldn't get web page for some reason";
- headget:
- while(<HEADGET>) {
-# print $_;
- if($_ =~ /HTTP\/.*3\d\d /) {
- $pagemoved=1;
- }
- elsif($pagemoved &&
- ($_ =~ /^Location: (.*)/)) {
- $geturl = $1;
-
- &SplitURL($geturl);
-
- $pagemoved++;
- last headget;
- }
- }
- close(HEADGET);
-
- if($pagemoved == 1) {
- print "Page is moved but we don't know where. Did you forget the ",
- "traling slash?\n";
- exit;
- }
-
- open(WEBGET, "$htmlget $geturl|") ||
- die "Couldn't get web page for some reason";
-
- while(<WEBGET>) {
- $line = $_;
- push @indoc, $line;
- $line=~ s/\n//g;
- $line=~ s/\r//g;
-# print $line."\n";
- $in=$in.$line;
- }
-
- close(WEBGET);
-}
-else {
- while(<STDIN>) {
- $line = $_;
- push @indoc, $line;
- $line=~ s/\n//g;
- $line=~ s/\r//g;
- $in=$in.$line;
- }
-}
-
-#print length($in)."\n";
-
-sub LinkWorks {
- my $check = $_[0];
-
-# URL encode:
-# $check =~s/([^a-zA-Z0-9_:\/.-])/uc sprintf("%%%02x",ord($1))/eg;
-
- @doc = `$linkcheck \"$check\"`;
-
- $head = 1;
-
-# print "COMMAND: $linkcheck \"$check\"\n";
-# print $doc[0]."\n";
-
- boo:
- if( $doc[0] =~ /^HTTP[^ ]+ (\d+)/ ) {
- $error = $1;
-
- if($error < 400 ) {
- return "GOOD";
- }
- else {
-
- if($head && ($error >= 500)) {
- # This server doesn't like HEAD!
- @doc = `$linkcheckfull \"$check\"`;
- $head = 0;
- goto boo;
- }
- return "BAD";
- }
- }
- return "BAD";
-}
-
-
-sub GetLinks {
- my $in = $_[0];
- my @result;
-
- getlinkloop:
- while($in =~ /[^<]*(<[^>]+>)/g ) {
- # we have a tag in $1
- $tag = $1;
-
- if($tag =~ /^<!--/) {
- # this is a comment tag, ignore it
- }
- else {
- if($tag =~ /(src|href|background|archive) *= *(\"[^\"]\"|[^ )>]*)/i) {
- $url=$2;
- if($url =~ /^\"(.*)\"$/) {
- # this was a "string" now $1 has removed the quotes:
- $url=$1;
- }
-
-
- $url =~ s/([^\#]*)\#.*/$1/g;
-
- if($url eq "") {
- # if the link was nothing than a #-link it may now have
- # been emptied completely so then we skip the rest
- next getlinkloop;
- }
-
- if($done{$url}) {
- # if this url already is done, do next
- $done{$url}++;
- next getlinkloop;
- }
-
- $done{$url} = 1; # this is "done"
-
- push @result, $url;
- if($tag =~ /< *([^ ]+)/) {
-# print "TAG: $1\n";
- $tagtype{$url}=$1;
- }
- }
- }
- }
- return @result;
-}
-
-@links = &GetLinks($in);
-
- linkloop:
-for(@links) {
- $url = $_;
-
- if($url =~ /^([^:]+):/) {
- $prot = $1;
-# if($prot !~ /(http|ftp|gopher)/i) {
- if($prot !~ /http/i) {
- # this is an unsupported protocol, we ignore this
- next linkloop;
- }
- $link = $url;
- }
- else {
- if($external) {
- next linkloop;
- }
-
- # this is a link on the save server:
- if($url =~ /^\//) {
- # from root
- $link = "$getprotocol://$getserver$url";
- }
- else {
- # from the scanned page's dir
- $nyurl=$url;
-
- if(length($getpath) &&
- ($getpath !~ /\/$/) &&
- ($nyurl !~ /^\//)) {
- # lacks ending slash, add one to the document part:
- $nyurl = "/".$nyurl;
- }
- $link = "$getprotocol://$getserver/$getpath$nyurl";
- }
- }
-
-#print "test $link\n";
-#$success = "GOOD";
-
- $success = &LinkWorks($link);
-
- $count = $done{$url};
-
- $allcount += $count;
-
- print "$success $count <".$tagtype{$url}."> $link $url\n";
-
-# If bad and -l, present the line numbers of the usage
- if("BAD" eq $success) {
- $badlinks++;
- if($linenumber) {
- $line =1;
- for(@indoc) {
- if($_ =~ /$url/) {
- print " line $line\n";
- }
- $line++;
- }
- }
- }
-
-}
-
-if($verbose) {
- print "$allcount links were checked";
- if($badlinks > 0) {
- print ", $badlinks were found bad";
- }
- print "\n";
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-01 00:21:12 +0000