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linklint
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executable file
·3647 lines (2900 loc) · 108 KB
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#!/usr/bin/perl
#==========================================================================
# linklint - a fast link checker and web site maintenance tool.
# Copyright (C) 1997 James B. Bowlin. All rights reserved.
#
# Linklint is SHAREWARE
#
# Introductory Price: $20 Individual, $100 Commercial
# Send check, money-order, or purchase order to:
#
# Bowlin Software and Consulting
# 484 Lake Park Ave. #317
# Oakland, CA 94610 USA
# Fax: 510-832-0847
#
# Try linklint for free. If you want to use it regularly then please
# send the appropriate fee to the address above. This one-time fee
# will entitle you to technical support and unlimited upgrades.
#
# This is a total rewrite of Rick Jansen's 4/15/96 version of webxref.
# Thanks to Celeste Stokely, Scott Perry, Patrick Meyer, Brian Kaminer
# David Hull, Stephan Petersen, Todd O'Boyle and Vittal Aithal
# for many excellent suggestions.
#
# Bugs, comments, suggestions welcome: bowlin@sirius.com
# Updates available at http://www.goldwarp.com/bowlin/linklint/
#========================================================================
$version = "2.1";
$date = "July 24, 1997";
$prog = "linklint";
$Usage0 = 'Usage: linklint @file @@file -flag [option] linkset linkset ...';
$Usage = $Usage0 . q~
-root dir Set server root to "dir" (default ".").
-host name[:port] Use "name" as domain name of site.
-http Check site remotely via http (requires -host).
-net Check status of remote http links found in site.
-help Show help. (Use "-help -out file" for complete usage).
Multi File Output:
-doc dir Write many (.txt) output files in "dir" directory.
Single File Output:
-error print errors -out file direct output to "file"
-warn print warnings -xref cross reference
-list print files found -forward sort by referring file
linkset:
home page only: / (default) root dir only: /#
entire site: /@ and all subdirs: /#/#
specific links: /link1 /link2 ... "sub" dir and below: /sub/@
~;
$Help2 = q~
Site Checking:
-case Check filename case (Windows/Dos only, local only).
-orphan List all unused (orphan) files (local only).
-index file Use "file" as default index file (local only).
-skip linkset Don't check html files that match linkset.
-ignore linkset Ignore all files matching linkset.
-limit n Only check up to n html files (default 500).
-map /a[=/b] Subsitute leading /a with /b (for serverside image maps).
-local linkset Always get files that match linkset locally.
Network:
-timeout t Timeout remote links after t seconds (default 15).
-delay d Delay d seconds between requests to same host (default 0).
-redirect Follow <meta> redirects in remote urls.
-proxy host[:port] Send remote http requests through a proxy server.
-password realm user:password
Authorize access to "realm".
Remote Status Cache:
-netmod Put urls in cache and report modified status.
-netset ... and update last modified status in the cache.
-retry Only check urls that had host failures.
-flush Remove urls from cache that aren't currently being checked.
-checksum Exaustive check of modified status.
-cache dir Read/save "linklint.url" cache file in this directory.
Output:
-quiet Don't print progress on screen.
-silent Don't print summary on screen.
-docbase exp Overrides defaults for linking html output back to site.
-textonly Only write .txt files in -doc directory.
-htmlonly Erase .txt files after .html output files are written.
Debug Flags:
-db1 Debug input, linkset expressions.
-db2 Show every file that gets checked (not just html).
-db3 Debug parser. Print tags and links found.
-db4 not used
-db5 not used
-db6 Detail last-modified status for remote urls.
-db7 Print brief debug information checking remote urls.
-db8 Print headers while checking remote urls.
-db9 Generate random http errors.
@cmndfile Read command line options from "cmndfile".
@@file Check status of remote http links in "file".
Linklint is SHAREWARE
Introductory Price: $20 Individual, $100 Commercial
Send check, money-order, or purchase order to:
Bowlin Software and Consulting
484 Lake Park Ave. #317
Oakland, CA 94610 USA
Fax: 510-832-0847
Try linklint for free. If you want to use it regularly then please
send the appropriate fee to the address above. This one-time fee
will entitle you to technical support and unlimited upgrades.
~;
$Usage1 =
qq~$prog $version $date. SHAREWARE by Jim Bowlin (bowlin\@sirius.com)\n~;
$Usage2 =
qq~Updates available at http://www.goldwarp.com/bowlin/linklint/\n\n~;
$Usage3 = qq~
Use $prog with no arguments for standard usage.
Use "$prog -help -out file" to save ALL options in a file.
~;
$Help = q~
Examples:
1) linklint -doc linkdoc -root dir
Checks home page. Output files go in "linkdoc" directory.
2) linklint -doc linkdoc -root dir /@
Checks all files under "dir". Output files go in "linkdoc" directory.
3) linklint -doc linkdoc -root dir /@ -net
Checks site as (2). Then checks all http links found in site.
4) linklint -doc linkdoc -root dir /#
Like (2) but only checks files in the root directory.
5) linklint -doc linkdoc -host host /@ -http
Same as (2) but checks site using http instead of file system.
6) linklint -doc linkdoc @@linkdoc/remote.txt
Check remote link status without rechecking entire site.
~;
$ErrUsage = qq~
Use $prog with no arguments for simple usage.
Use "$prog -help -out file" to save a list of ALL options in a file.
~;
#------------------ Start up values ----------------------------------
#----- Files to try in case of a directory reference like "/"
@DefIndex = (
'home.html', 'index.html', 'index.shtml', 'index.htm', 'index.cgi',
'wwwhome.html', 'welcome.html',
);
$DefCaseSens = '';
#----- File extensions and floormats
$HtmlExts = 'html|shtml|htm';
$AnyCgi = '\?|^/cgi-bin/|(\.(cgi|pl)(/|$))';
$StandardMaps = '(/imagemap|/cgi-(b|w)in/(imagemap.exe|htimage))';
@fileformat = (
"cgi::$AnyCgi",
'default index::\(default\)',
"html::\.($HtmlExts)\$",
'map::\.map$',
'image::\.(gif|jpg|jpeg|tif|tiff|pic|pict|hdf|ras|xbm)$',
'text::\.txt$',
'audio::\.(au|snd|wav|aif|aiff|midi|mid)$',
'video::\.(mpg|mpeg|avi|qt|mov)$',
'shockwave::\.dcr$',
'applet::\.class$',
'other::unknown',
);
@filesplit = (
'found %3d file%s::.',
'found %3d default index%es::\/$',
);
@lostsplit = (
'ERROR %3d missing file%s::.',
'ERROR %3d missing director%y::\/$',
);
foreach (@fileformat) {
($name,$data) = split(/::/);
push(@filesplit,"found %3d $name file%s::$data");
push(@lostsplit,"ERROR %3d missing $name file%s::$data");
}
@schema = ("http", "https", 'ftp', 'javascript', 'mailto', 'gopher',
'file','news', 'view-source', 'about', 'unknown');
@schemesplit = ( "found %3d other link%s::.");
foreach (@schema) {
push(@schemesplit, "found %3d $_ link%s::^$_:");
}
#--------------- Output Floormats ----------------------------------
@UrlHtml = (
'urlsum',
'urlindex',
'urllog',
"Index of Linklint results for remote urls",
);
@SiteHtml = (
'summary',
'linklint',
'log',
"Index of Linklint results ",
);
#---- flags used in the printout lists below
$LIST = 001; $NOXR = 010; $URLDOC = 0100;
$WARN = 002; $XREF = 020; # $URLDOC = 0200;
$ERR = 004; $FWD = 040;
$PrnFlag = 0;
$SumFlag = $LIST | $ERR | $WARN | $NOXR;
$DocFlag = $LIST | $ERR | $WARN | $NOXR | $XREF | $FWD | $URLDOC;
@SumPrint = (0, 0, 1, $SumFlag);
@SiteForm = (
# file; %Data; $mask; program; @parameters
"dir; DirList; 001; 1; found %3d director%y with files; 0",
"file; FileList; 011; 2; filesplit; 0",
"fileX; FileList; 021; 2; filesplit; 2",
"fileF; Forward; 041; 1; found %3d file%s with forward links; 1; contains %d link%s:",
"remote; ExtLink; 011; 2; schemesplit; 0",
"remoteX; ExtLink; 021; 2; schemesplit; 2",
"anchor; Anchor; 011; 1; found %3d named anchor%s; 0",
"anchorX; Anchor; 021; 1; found %3d named anchor%s; 2",
"imgmap; ImgMap; 011; 1; found %3d named image map%s; 0",
"imgmapX; ImgMap; 021; 1; found %3d named image map%s; 2",
"ignore; Ignored; 011; 1; ----- %3d ignored file%s; 0",
"ignoreX; Ignored; 021; 1; ----- %3d ignored file%s; 2",
"action; Action; 011; 1; ----- %3d action%s skipped; 0",
"actionX; Action; 021; 1; ----- %3d action%s skipped; 2",
"skipped; Skipped; 012; 1; ----- %3d file%s skipped; 0",
"skipX; Skipped; 022; 1; ----- %3d file%s skipped; 2",
"orphan; OrphList; 001; 1; ----- %3d orphan%s; 0",
"warn; WarnList; 012; 1; warn %3d warning%s; 0",
"warnX; WarnList; 022; 1; warn %3d warning%s; 2; occurred in",
"warnF; WarnF; 042; 1; warn %3d file%s with warnings; 1; had %d warning%s",
"case; BadCase; 014; 1; ERROR %3d file%s mismatched case; 0",
"caseX; BadCase; 024; 1; ERROR %3d file%s mismatched case; 2",
"caseF; CaseF; 044; 1; ERROR %3d file%s with mismatched link(s); 1; had %d mismatched link%s",
"error; LostFile; 014; 2; lostsplit; 0",
"errorX; LostFile; 024; 2; lostsplit; 2",
"errorF; ErrF; 044; 1; ERROR %3d file%s had broken links; 1; had %d broken link%s",
"errorA; LostAnch; 014; 1; ERROR %3d missing named anchor%s; 0",
"errorAX; LostAnch; 024; 1; ERROR %3d missing named anchor%s; 2",
"errorM; LostMap; 014; 1; ERROR %3d missing named image map%s; 0",
"errorMX; LostMap; 024; 1; ERROR %3d missing named image maps%s; 2",
"httpfail; HttpFail; 022; 3; ----- %3d link%s; 0; failed via http",
"httpok; HttpOk; 022; 3; ----- %3d link%s; 0; ok via http",
"mapped; Mapped; 022; 1; ----- %3d link%s %w mapped; 1; mapped to",
);
@UrlForm = (
"urlok; UrlOk; 0001; 3; found %3d url%s; 0; %w ok",
"urlmoved; UrlMoved; 0002; 3; ----- %3d url%s; 0; moved",
"urlhost; HostFail; 0104; 3; ERROR %3d host%s; 0; failed; %d host%s:",
"urlfail; UrlFail; 0014; 3; ERROR %3d url%s; 0; failed",
"urlfailX; UrlFailX; 0024; 3; ERROR %3d url%s; 2; failed",
"urlfailF; UrlFailF; 0044; 1; ERROR %3d file%s with failed urls; 1; had %d failed url%s",
"urlskip; UrlWarn; 0012; 3; warn %3d url%s; 0; not checked",
"urlmod; UrlMod; 0000; 3; found %3d url%s; 0; %w modified",
"urlwarn; WarnList; 0012; 1; warn %3d warning%s; 0",
"urlwarnX; WarnList; 0022; 1; warn %3d warning%s; 2; in %d url%s",
"urlwarnF; WarnF; 042; 1; warn %3d url%s with warnings; 1; had %d warning%s",
);
#----- Command Line Input
$MiscFlags = 'http|netmod|netset|flush|retry|redirect|textonly|htmlonly' .
'|case|error|forward|help|list|net|quiet|silent|orphan|warn|xref';
$HashOpts = 'local|index|ignore|map|skip|javascript';
$FullOpts = 'delay|doc|host|limit|out|root|timeout|proxy|docbase|cache';
%CheckedIn = ();
#---------------------------------------------------------------------------
# Misc. startup values
#---------------------------------------------------------------------------
$Arg{'timeout'} = 15; # how long to wait for a response
$Arg{'delay'} = 0; # how long to delay between requests
$Arg{'VERSION'} = $version;
$Headline = "#" . "-" x 60 . "\n"; # used to print lists
$ATTRIB = q~\s*=\s*("([^"]*)"|'([^']*)'|([^\s"']+))~;
#----- prevent warnings
%HttpOk = %HttpFail = %CaseF = %WarnF = ();
%UrlWarn = %Ignored = %UrlFailX = %UrlFailF = %LostMap = ();
$UrlOk = $Abort = 0;
###########################################################################
#
# Main code starts here
#
###########################################################################
@ARGV || do { print $Usage1, $Usage2, $Usage; exit; };
$Arg{'DOS'} = $Dos = $^O ?
($^O =~ /win32/i ? 1 : '') :
($ENV{'windir'} ? 1 : '') ;
$pwdprog = $Dos ? 'cd' : 'pwd'; # program to pwd
$HOME = &GetCwd; # this is done twice.
#---------------- Command Line Arguments -------------------------
@infiles = &ReadArgs(@ARGV);
foreach(@HttpFiles) {
push(@infiles, &ReadHttp($_));
}
$Arg{'doc'} && ! $DB{1} && do {
($DocDir = $Arg{'doc'} ) =~ s#\\#\/#g;
$DocDir =~ m#^/# || ($DocDir = "$HOME/$DocDir" );
-d $DocDir || mkdir($DocDir, 0777) ||
&Error(qq~invalid output directory: "$DocDir"~, 'sys');
$SiteLog = "$DocDir/log.txt";
$UrlLog = "$DocDir/urllog.txt";
$LogProgress++;
};
$Arg{'out'} && !$DB{1} && do {
$OutLog = $Arg{'out'};
$OutLog =~ m#^/# || ($OutLog = "$HOME/$OutLog" );
};
$Arg{'help'} && do {
$Arg{'out'} && do {
&LogFile($Arg{'out'});
print $Usage1, $Usage2, $Usage, $Help2, $Help;
exit;
};
print $Help, $Usage3;
exit;
};
($LogDir = $Arg{'cache'} || $ENV{'LINKLINT'} || $ENV{'HOME'} || $HOME) =~ s#/$##;
$StatFile = $LogDir . "/linklint.url";
#----- Link Spec's
$Arg{'case'} && do {
$Dos || &Error("can only check case under Windows/Dos");
$CheckCase++;
};
$IgnoreCase = ($Dos && ! $CheckCase && ! $Arg{'http'} ) ? 1 : 0;
foreach(@infiles) {
s#^http:#http:#i && (push(@CheckUrls, $_), next);
$_ = "/$_" unless m#^/#;
$IgnoreCase && tr/A-Z/a-z/;
$LinkSet{$_}++;
};
%LinkSet || do {
%LinkSet = ( '/', '1');
$Hints{ 'Use a linkset of /@ to check entire site.'}++;
};
foreach(keys %LinkSet) {
m%[\@\#]% || ($Seeds{$_}++, next); # literals
m%^([^\@\#]*/)% && $Seeds{$1}++; # directories
}
%LinkSet && ! %Seeds && do {
print STDERR "\nError: Could not form any seeds from the linksets.\n";
exit;
};
$LinkSet = &LinkSet("linkset", *LinkSet);
#----- Flags and Options
&WantNumber($Arg{'limit'}, "-limit");
&WantNumber($Arg{'timeout'}, "-timeout");
&WantNumber($Arg{'delay'}, "-delay");
$Arg{'error'} && ($PrnFlag |= ($NOXR | $ERR));
$Arg{'warn'} && ($PrnFlag |= ($NOXR | $WARN));
$Arg{'list'} && ($PrnFlag |= ($NOXR | $LIST));
$Arg{'xref'} && ($PrnFlag |= $XREF, $PrnFlag &= ~ $NOXR);
$Arg{'forward'} && ($PrnFlag |= $FWD, $PrnFlag &= ~ ($NOXR | $XREF));
$Arg{'quiet'} && $Quiet++;
$Arg{'silent'} && $Silent++;
$DB{2} && $DbLink++;
$DB{3} && $DbP++;
$CacheNet = $Arg{'retry'} || $Arg{'flush'} || $Arg{'netmod'}
|| $Arg{'netset'};
$CheckNet = $Arg{'netmod'} || $Arg{'netset'} || $Arg{'net'};
$CacheNet && !$CheckNet && !@CheckUrls && do {
$Arg{'flush'} &&
print STDERR "ERROR: -flush requires -net or -netmod or -netset\n";
$Arg{'retry'} &&
print STDERR "ERROR: -retry requires -net or -netmod or -netset\n";
print STDERR $ErrUsage;
exit;
};
$Limit = $Arg{'limit'} = $Arg{'limit'} || 500; # check at most 500 files
$Arg{'root'} && do {
$DB{1} || chdir($Arg{'root'}) ||
&Error(qq~invalid root directory: "$Arg{'root'}"~, 'sys');
&GetCwd;
$HeaderRoot = $CWD;
};
$ServerRoot = $CWD;
$IgnoreCase && $ServerRoot =~ tr/A-Z/a-z/;
$ServerHost = $Arg{'host'} || '';
#---- get base for links in html files in -doc directory
$DocDir && do {
$DocBase = defined $Arg{'docbase'} ? $Arg{'docbase'} :
$Arg{'http'} ? "http://$ServerHost" :
$Dos ? "file:///$DosDrive|$ServerRoot" : "file://$ServerRoot";
};
$Arg{'tilde'} && do {
($ServerTilde = $Arg{'tilde'} ) =~ s/#/\$1/g;
$ServerTilde = '"' . $ServerTilde . '"';
};
%IGNORE && do {
$Ignore = &LinkSet('ignore', *IGNORE);
};
%INDEX && do {
grep(m/[A-Z]/, @DefIndex = keys %INDEX) && $DefCaseSens++;
$Arg{'index'} = join(" ", @DefIndex);
};
%JAVASCRIPT && do {
foreach( keys %JAVASCRIPT) {
&SetProtoJS($_);
}
};
%MAP && do {
local(@maps);
foreach ( keys %MAP ) {
$NewMap{$_} = s/=([^=]*)$// ? $1 : '';
push(@maps, &Regular($_) );
}
$Arg{'map'} = $ServerMap = join( '|', @maps);
};
!%LOCAL && $LOCAL{'@.map'}++; # default to *.map
%LOCAL && ($Local = &LinkSet("local", *LOCAL));
%SKIP && ($Skip = &LinkSet("skip", *SKIP));
$Arg{'http'} && do {
$ServerHost || &Error("must set -host when using -http");
&HttpInit(*Arg, *DB, *PASSWORD, 'spider');
$Http++;
($Arg{'case'} || $Arg{'orphan'} ) &&
$Hints{"-case and -orphan don't work in -http mode."}++;
};
$DB{1} && do {
foreach ( sort keys %Arg) {
printf "%10s %s\n", $_, &Abbrev(60, $Arg{$_});
}
%PASSWORD || exit;
print "Passwords:\n";
foreach (sort keys %PASSWORD) {
print qq~"$_" $PASSWORD{$_}\n~;
}
exit;
};
#--------------- Local/Remote Site Checking ---------------------
! @CheckUrls && do {
&LogFile( $OutLog || $SiteLog);
&Progress( $Http ? "\nChecking links via http://$ServerHost"
: "\nChecking links locally in $ServerRoot");
&Progress("that match: " . join(" ", keys %LinkSet));
&Progress(&Plural(scalar keys %Seeds, "%d seed%s: ") .
join(" ", sort keys %Seeds));
$Time = -time;
&SetBase("/");
foreach (sort keys %Seeds) {
$_ = &UniqueUrl($_);
&Progress("\nSeed: $_");
&WasCached($_, "\n") || &LinkLint(0, $_, "\n");
}
$Time += time;
$DirList = keys %DirList;
&CheckOrphan(*DirList,*OrphList,*BadCase, $Arg{'orphan'}, $CheckCase);
&ProcessLocal;
&PrintOutput(*SiteForm, *SiteSummary, $DocDir, @SiteHtml);
};
$CheckNet && push(@CheckUrls, grep( m#^http://#i, keys %ExtLink));
@CheckUrls || exit;
#--------------- Remote Url Checking ---------------------
%WarnList = ();
&LogFile( $OutLog || $UrlLog);
&HttpInit(*Arg, *DB, *PASSWORD, 'checkonly');
$CacheNet && &Http'OpenCache($StatFile);
$Arg{'flush'} && &Http'FlushCache(@CheckUrls);
$Arg{'retry'} &&
! (@CheckUrls = &Http'Recheck(@CheckUrls)) &&
((print STDERR "No urls need to be retried.\n"), exit);
%UrlStatus = &Http'CheckURLS(@CheckUrls);
&Http'WriteCaches;
($CheckedUrls = keys %UrlStatus) || exit;
&Http'StatusMsg(*UrlStatus, *UrlOk, *UrlFail, *UrlWarn);
$UrlRetry = &Http'RetryCount(*UrlStatus);
foreach( keys %ExtLink) {
$UrlFail{$_} || next;
$UrlFailX{$_} = $UrlFail{$_};
$UrlFailXX{"$_&cr; $UrlFailX{$_}"} = $ExtLink{$_};
}
&HashUnique(*WarnList);
&InvertKeys(*WarnList, *WarnF);
$UrlFailedF = &InvertKeys(*UrlFailXX, *UrlFailF);
&Http'OtherStatus(*UrlMod, *HostFail, *UrlMoved, *UrlRedirect);
&PrintOutput(*UrlForm, *UrlSummary, $DocDir, @UrlHtml);
exit;
###########################################################################
#
# Site Checking Routines
#
###########################################################################
#--------------------------------------------------------------------------
# UniqueUrl($url)
#
# Make a URL Unique. Decode "/../" and "." in the path of full URL's
# Do same for relative URL's But also completes the path
# if it does not start with a "/".
#--------------------------------------------------------------------------
sub UniqueUrl
{
local($_) = @_;
local($scheme, $host, $local);
$DbP && $ErrTag && print $ErrTag;
s#^([\w\.\-\+]+):## && do { # specified scheme
($scheme = $1) =~ tr/A-Z/a-z/; # lower case scheme
$scheme =~ /^https?$|^ftp$/ || do {
$DbP && print "==> LINK $scheme:$_\n\n";
return "$scheme:$_";
};
};
s#^//([^/]*)## && ($host = $1); # specified host
($scheme && $host) || ($scheme = $BaseScheme) && do {
$host || $BasePath || m#^/# || ($host = $_, $_ = '');
$host || ($host = $BaseHost) && m#^/# || ($_ = $BasePath . $_);
};
(($host && $host ne $ServerHost) || ($scheme && $scheme !~ /http/i )) ||
do {
m#^/# || ($_ = $CurPath . $_);
s/\#.*$//; # strip local anchor
$local++;
};
m/&/ && do {
s/&/&/g; # expand & etc
s/</</g;
s/>/>/g;
s/"/"/g;
s/ / /g;
s/&#(\d\d?\d?);/pack("c",$1)/ge;
};
s#\\#/#g && &Warn("\\ converted to / in $_[0]", $link);
#----- make path unique by expanding /.. and /.
m#/\.# && do {
while (s#/\./#/#) {;} # /./ -> /
while (s#/[^/]*/\.\./#/#) {;} # /dir/../ -> /
s#/.$##; # trailing /.
s#/[^/]*/\.\.$#/#; # trailing /dir/../ -> /
};
$local || do {
$scheme = $scheme || 'http';
$host = $host ? "//$host" : '';
$DbP && print "==> LINK $scheme:$host$_\n\n";
return "$scheme:$host$_";
};
$IgnoreCase && tr/A-Z/a-z/;
$DbP && $ErrTag && print "==> LOCAL LINK $_\n\n";
$_ || '/';
}
#--------------------------------------------------------------------------
# WasCached($link, $referer)
#
# Does some quick checks on $link. Return 1 if we are done with it.
# Return 0 if it should be checked further. Also bails out early
# If we know we will not have to process any further.
#--------------------------------------------------------------------------
sub WasCached
{
local($link, $referer) = @_;
$referer ne "\n" && &AppendList(*Forward, $referer, $link);
$LostFile{$link} &&
(($LostFile{$link} .= "\n$referer"), return '1');
$FileList{$link} && do {
$Skipped{$link} && ($Skipped{$link} .= "\n$referer");
$FileList{$link} .= "\n$referer";
return '1';
};
$Action{$link} && return '1';
$link =~ m#^(\w+):# && do {
&AppendList(*ExtLink, $link, $referer);
return '1';
};
$Ignore && $link =~ m/$Ignore/o && do {
&AppendList(*Ignored, $link, $referer);
return '1';
};
'';
}
#--------------------------------------------------------------------------
# LinkLint($level, $link, $referer)
#
# $level keeps track of depth of recursion.
# $link is the URL or file to check
# $referer is the file that referenced $link.
# Recursively get all referenced files from a file.
# NOTE: $link is assumed to be anchored at the server root.
#--------------------------------------------------------------------------
sub LinkLint
{
local($level, $link, $referer) = @_;
local(%newlinks);
$DbLink && &Progress("getting $link");
($ServerMap || $ServerTilde) && do {
($link = &MapLink($link, $referer)) || return '';
};
$link = $Http && $link !~ m/$Local/o ?
&LinkRemote($link, $referer) :
&LinkLocal($link, $referer);
$link || return;
$Forward{$link} = "\n"; # this primes forward
#----- recurse into all links found in this file
foreach $new (keys %newlinks) {
&WasCached($new, $link) || &LinkLint($level+1, $new, $link);
}
}
#--------------------------------------------------------------------------
# LinkLocal($link, $referer)
#
# Does the local equivalent of what the server does.
#--------------------------------------------------------------------------
sub LinkLocal
{
local($link, $referer) = @_;
$link =~ s/\?.*$//; # strip local queries
local($lastdir); # for directory listings
-d "$ServerRoot$link" && $link !~ m#/$# && ( $link .= '/' );
local($path) = $link; # for index files
if ( $link =~ m#/$#) {
if (&LookupDir($link) ) {
$path = &LookupDir($link);
$PrintAddenda{$link} = "[file: $path]";
}
else {
$LASTDIR || do {
&AppendList(*LostFile, $link, $referer);
return '';
};
$lastdir = '1';
&Warn("index file not found", $link);
$PrintAddenda{$link} = "[directory listing]";
}
}
elsif ( -f _ ) {
((stat(_))[2] & 4 == 0) && &Warn("not world readable", $link);
}
else {
&AppendList(*LostFile, $link, $referer);
$ServerTilde || $link =~ m#(^/~[^/]*)# &&
$Hints{qq~use -http to resolve "$1" links.~}++;
$ServerMap || $link =~ /^($StandardMaps)/o &&
$Hints{qq~use "-map $1" to resolve imagemaps.~}++;
return '';
}
&AppendList(*FileList, $link, $referer);
&CacheDir($link);
$lastdir && do {
&StopRecursion($link, $referer) && return '';
&Progress("checking $link");
%newlinks = %LASTDIR;
return $link;
};
$path =~ /\.($HtmlExts|map)$/io || return ''; # only parse html & .map
&StopRecursion($link, $referer) && return '';
&Progress("checking $link");
open($path, "$ServerRoot$path") || do {
&Warn(qq~could not open file: "$ServerRoot$path"\n~, 'sys');
return '';
};
$path =~ /\.map$/i ?
&ParseMap($path, *newlinks) :
&ParseHtml($path, $link, *newlinks);
close($path);
$link;
}
#--------------------------------------------------------------------------
# MapLink($link, $referer)
#
# Resolves my server maps for $link. Returns new $link or '' if
# the new link was already cached.
#--------------------------------------------------------------------------
sub MapLink
{
local($link, $referer) = @_;
local(%checked, $old);
$old = $link;
while ( ($ServerMap && $link =~ s#^($ServerMap)#$NewMap{$1}#o) ||
($ServerTilde && $link =~ s#^/~([^/]*)#$ServerTilde#oee) ) {
$checked{$link}++ || next;
&Warn("infinite mapping loop", $link);
return $link;
}
($old eq $link || "$old/" eq $link) && return $link;
$PrintAddenda{$link} = "($old)";
$Mapped{$old} = $link;
$DbLink && &Progress("mapped $old\n => $link");
&WasCached($link, $referer) && return '';
$link;
}
#--------------------------------------------------------------------------
# StopRecursion($link, $referer)
#
# Stops recursion as needed. Also records skipped files.
#--------------------------------------------------------------------------
sub StopRecursion
{
local($link, $referer) = @_;
$Parsed{$link} && return '1';
$Abort || $link !~ /$LinkSet/o || ($Skip && $link =~ /$Skip/o) ||
++$Parsed > $Limit || do {
$Parsed{$link}++;
return '';
};
&AppendList(*Skipped, $link, $referer);
push(@Skipped, $link);
&Progress(&q
570E
uot;----- $link");
return '1';
}
#--------------------------------------------------------------------------
# LinkRemote($link, $referer)
#
# Checks $link via http. If it is an html file it is parsed and
# the results go into local lists maintained by LinkLink().
#--------------------------------------------------------------------------
sub LinkRemote
{
local($oldlink, $referer) = @_;
#---- check url and parse into local arrays in LinkLint().
$Fetched{$oldlink}++ && return '';
($flag, $link) = &Http'Parse($ServerHost, $oldlink, $referer, *newlinks);
$flag == -5000 && return ''; # user interrupt
$flag == -4000 && do { # moved to different host
&AppendList(*ExtLink, $link, $referer);
return '';
};
$link ne $oldlink && $link ne "$oldlink/" && do {
$PrintAddenda{$link} = "($oldlink)";
$Mapped{$oldlink} = $link;
};
$flag || return ''; # new url was already cached
local($msg) = &Http'ErrorMsg($flag);
&Http'FlagWarn($flag) && do {
&AppendList(*Ignored, $link, $referer);
&AppendList(*HttpFail, $link, $msg);
&Warn($msg, $link);
return '';
};
&Http'FlagOk($flag) || do {
&AppendList(*LostFile, $link, $referer);
&AppendList(*HttpFail, $link, $msg);
return '';
};
&AppendList(*HttpOk, $link, $msg);
$flag == -2000 || return '';
$link;
}
#--------------------------------------------------------------------------
# CacheDir($link)
#
# Save a list of directories for orphan and case checking.
#--------------------------------------------------------------------------
sub CacheDir
{
local($dir) = @_;
$dir =~ s#/[^/]*$##;
local($absdir) = $ServerRoot . $dir;
$dir = $dir || '(root)';
($DirList{$dir} || $LostDir{$dir}) && return;
&AppendList( -d $absdir ? *DirList : *LostDir, $dir, "\n");
}
#--------------------------------------------------------------------------
# ParseHtml(*HANDLE, $link, *list)
#
# Extracts all (?) links from the file by setting %list{link} = "1".
# Links are expanded to full unique URL's or paths.
# %Anchor named anchors found
# %ImgMap named image maps found
# %WantAnch named anchors to find
# %WantMap named image maps to find
#--------------------------------------------------------------------------
sub ParseHtml
{
local(*HANDLE, $link, *list) = @_;
local($tag, $code, $temp, $url, $att, $term, $anch);
&SetBase($link);
$DbP && print "\n" , '=' x 60, "\nFILE $link\n\n";
$/ = "<"; # use "<" as newline separator
TAG:
while (<HANDLE>) {
/^\!\-\-/ && do {
while ($_ !~ /\-\-\!?>/ ) { # ignore tags inside comments
($_ = <HANDLE>) && next;
&Warn(q~missing end comment "-->"~, $link);
last TAG;
}
next TAG;
};
m/^(\w+)(\s*("[^"]*"|'[^']*'|[^>"'])*)(>?)/ || next;
$tag = $1;
$att = $2;
$term = $4;