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-rwxr-xr-xperl/crawlink.pl402
1 files changed, 402 insertions, 0 deletions
diff --git a/perl/crawlink.pl b/perl/crawlink.pl
new file mode 100755
index 000000000..eada58c25
--- /dev/null
+++ b/perl/crawlink.pl
@@ -0,0 +1,402 @@
+#!/usr/bin/perl
+#
+# crawlink.pl
+#
+# This script crawls across all found links below the given "root" URL.
+# It reports all good and bad links to stdout. This code was based on the
+# checklink.pl script I wrote ages ago.
+#
+# Written to use 'curl' for URL checking.
+#
+# Author: Daniel Stenberg <daniel@haxx.se>
+# Version: 0.1 Dec 14, 2000
+#
+# HISTORY
+#
+# 0.1 - The given url works as the root. This script will only continue
+# and check other URLs if the leftmost part of the new URL is identical
+# to the root URL.
+#
+
+use strict;
+
+my $in="";
+my $verbose=0;
+my $usestdin;
+my $linenumber;
+my $help;
+my $external;
+
+ argv:
+if($ARGV[0] eq "-v" ) {
+ $verbose++;
+ shift @ARGV;
+ goto argv;
+}
+elsif($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;
+}
+
+my $geturl = $ARGV[0];
+my $firsturl= $geturl;
+
+#
+# Define a hash array to hold all root URLs to visit/we have visited
+#
+my %rooturls;
+$rooturls{$ARGV[0]}=1;
+
+if(($geturl eq "") || $help) {
+ print "Usage: $0 [-hilvx] <full URL>\n",
+ " Use a traling slash for directory URLs!\n",
+ " -h This help text\n",
+ " -l Line number report for BAD links\n",
+ " -v Verbose mode\n",
+ " -x Check non-local (external?) links only\n";
+ exit;
+}
+
+# This is necessary from where I tried this:
+my $proxy="";
+#$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:
+my $linkcheck = "curl -s -m 20 -I$proxy";
+
+# as a second attempt, this will be used. This is not using HEAD but will
+# get the whole frigging document!
+my $linkcheckfull = "curl -s -m 20 -i$proxy";
+
+# htmlget, URL will be appended to the right of this command line
+my $htmlget = "curl -s$proxy";
+
+# Parse the input URL and split it into the relevant parts:
+
+my $getprotocol;
+my $getserver;
+my $getpath;
+my $getdocument;
+
+my %done;
+my %tagtype;
+my $allcount=0;
+my $badlinks=0;
+
+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;
+ }
+}
+
+my @indoc;
+
+sub GetRootPage {
+ my $geturl = $_[0];
+ my $in="";
+ my $code=200;
+ my $type="text/plain";
+
+ my $pagemoved=0;
+ open(HEADGET, "$linkcheck $geturl|") ||
+ die "Couldn't get web page for some reason";
+
+ while(<HEADGET>) {
+ #print STDERR $_;
+ if($_ =~ /HTTP\/1\.[01] (\d\d\d) /) {
+ $code=$1;
+ if($code =~ /^3/) {
+ $pagemoved=1;
+ }
+ }
+ elsif($_ =~ /^Content-Type: ([\/a-zA-Z]+)/) {
+ $type=$1;
+ }
+ elsif($pagemoved &&
+ ($_ =~ /^Location: (.*)/)) {
+ $geturl = $1;
+
+ &SplitURL($geturl);
+
+ $pagemoved++;
+ last;
+ }
+ }
+ close(HEADGET);
+
+ if($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>) {
+ my $line = $_;
+ push @indoc, $line;
+ $line=~ s/\n/ /g;
+ $line=~ s/\r//g;
+# print $line."\n";
+ $in=$in.$line;
+ }
+
+ close(WEBGET);
+
+ return ($in, $code, $type);
+}
+
+sub LinkWorks {
+ my $check = $_[0];
+
+# URL encode:
+# $check =~s/([^a-zA-Z0-9_:\/.-])/uc sprintf("%%%02x",ord($1))/eg;
+
+ my @doc = `$linkcheck \"$check\"`;
+
+ my $head = 1;
+
+# print "COMMAND: $linkcheck \"$check\"\n";
+# print $doc[0]."\n";
+
+ boo:
+ if( $doc[0] =~ /^HTTP[^ ]+ (\d+)/ ) {
+ my $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 = $_[0];
+ my @result;
+
+ while($in =~ /[^<]*(<[^>]+>)/g ) {
+ # we have a tag in $1
+ my $tag = $1;
+
+ if($tag =~ /^<!--/) {
+ # this is a comment tag, ignore it
+ }
+ else {
+ if($tag =~ /(src|href|background|archive) *= *(\"[^\"]\"|[^ \)>]*)/i) {
+ my $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;
+ }
+
+ if($done{$url}) {
+ # if this url already is done, do next
+ $done{$url}++;
+ next;
+ }
+
+ $done{$url} = 1; # this is "done"
+
+ push @result, $url;
+ if($tag =~ /< *([^ ]+)/) {
+ $tagtype{$url}=$1;
+ }
+ }
+ }
+ }
+ return @result;
+}
+
+
+while(1) {
+ $geturl=-1;
+ for(keys %rooturls) {
+ if($rooturls{$_} == 1) {
+ if($_ !~ /^$firsturl/) {
+ $rooturls{$_} += 1000; # don't do this, outside our scope
+ if($verbose) {
+ print "SKIP: $_\n";
+ }
+ next;
+ }
+ $geturl=$_;
+ last;
+ }
+ }
+ if($geturl == -1) {
+ last;
+ }
+ if($verbose) {
+ print "ROOT: $geturl\n";
+ }
+
+ #
+ # Splits the URL in its different parts
+ #
+ &SplitURL($geturl);
+
+ #
+ # Returns the full HTML of the root page
+ #
+ my ($in, $error, $ctype) = &GetRootPage($geturl);
+
+ $rooturls{$geturl}++; # increase to prove we have already got it
+
+ if($ctype ne "text/html") {
+ # this is not HTML, we skip this
+ if($verbose == 2) {
+ print "Non-HTML link, skipping\n";
+ next;
+ }
+ }
+
+ if($error >= 400) {
+ print "$geturl return $error, exiting\n";
+ exit;
+ }
+
+ if($verbose == 2) {
+ printf("Error code $error, Content-Type: $ctype, got %d bytes\n",
+ length($in));
+ }
+
+ #print "protocol = $getprotocol\n";
+ #print "server = $getserver\n";
+ #print "path = $getpath\n";
+ #print "document = $getdocument\n";
+ #exit;
+
+ #
+ # Extracts all links from the given HTML buffer
+ #
+ my @links = &GetLinks($in);
+
+ for(@links) {
+ my $url = $_;
+ my $link;
+
+ if($url =~ /^([^:]+):/) {
+ my $prot = $1;
+ if($prot !~ /http/i) {
+ # this is an unsupported protocol, we ignore this
+ next;
+ }
+ $link = $url;
+ }
+ else {
+ if($external) {
+ next;
+ }
+
+ # this is a link on the same server:
+ if($url =~ /^\//) {
+ # from root
+ $link = "$getprotocol://$getserver$url";
+ }
+ else {
+ # from the scanned page's dir
+ my $nyurl=$url;
+
+ if(length($getpath) &&
+ ($getpath !~ /\/$/) &&
+ ($nyurl !~ /^\//)) {
+ # lacks ending slash, add one to the document part:
+ $nyurl = "/".$nyurl;
+ }
+ $link = "$getprotocol://$getserver/$getpath$nyurl";
+ }
+ }
+
+ my $success = &LinkWorks($link);
+
+ my $count = $done{$url};
+
+ $allcount += $count;
+
+ print "$success $count <".$tagtype{$url}."> $link $url\n";
+
+ $rooturls{$link}++; # check this if not checked already
+
+ if("BAD" eq $success) {
+ $badlinks++;
+ if($linenumber) {
+ my $line =1;
+ for(@indoc) {
+ if($_ =~ /$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 2024-11-21 22:11:35 +0000