-#!/usr/local/bin/perl5 -w
+#!/usr/bin/perl -w
#
-# webcollage, Copyright (c) 1999 by Jamie Zawinski <jwz@jwz.org>
+# webcollage, Copyright © 1999-2013 by Jamie Zawinski <jwz@jwz.org>
# This program decorates the screen with random images from the web.
# One satisfied customer described it as "a nonstop pop culture brainbath."
#
# the above copyright notice appear in all copies and that both that
# copyright notice and this permission notice appear in supporting
# documentation. No representations are made about the suitability of this
-# software for any purpose. It is provided "as is" without express or
+# software for any purpose. It is provided "as is" without express or
# implied warranty.
+
# To run this as a display mode with xscreensaver, add this to `programs':
#
-# default-n: webcollage -root \n\
-# default-n: webcollage -root -filter 'vidwhacker -stdin -stdout' \n\
-#
-# To run this as a CGI program on a web site, do this (these instructions
-# work with Apache 1.3 or newer):
-#
-# 1: Place this program in your document directory, named "webcollage".
-# The name shouldn't end in .cgi or .html, since this CGI behaves like
-# a directory.
-# 2: Make it world-readable and world-executable.
-# 3: Create a ".htaccess" file in the same directory containing these lines:
-# <Files ~ "^webcollage$">
-# SetHandler cgi-script
-# </Files>
-# 4: Create these files in the same directory, world-writable, zero-length:
-# collage.ppm
-# collage.tmp
-# collage.jpg
-# collage.pending
-# collage.map
-#
-# Now the CGI is ready to go.
-
-my $copyright = "WebCollage, Copyright (c) 1999" .
- " Jamie Zawinski <jwz\@jwz.org>\n" .
- " http://www.jwz.org/xscreensaver/\n";
+# webcollage -root
+# webcollage -root -filter 'vidwhacker -stdin -stdout'
+#
+#
+# You can see this in action at http://www.jwz.org/webcollage/ --
+# it auto-reloads about once a minute. To make a page similar to
+# that on your own system, do this:
+#
+# webcollage -size '800x600' -imagemap $HOME/www/webcollage/index
+#
+#
+# If you have the "driftnet" program installed, webcollage can display a
+# collage of images sniffed off your local ethernet, instead of pulled out
+# of search engines: in that way, your screensaver can display the images
+# that your co-workers are downloading!
+#
+# Driftnet is available here: http://www.ex-parrot.com/~chris/driftnet/
+# Use it like so:
+#
+# webcollage -root -driftnet
+#
+# Driftnet is the Unix implementation of the MacOS "EtherPEG" program.
+
+
+require 5;
+use strict;
+
+# We can't "use diagnostics" here, because that library malfunctions if
+# you signal and catch alarms: it says "Uncaught exception from user code"
+# and exits, even though I damned well AM catching it!
+#use diagnostics;
-my $argv0 = $0;
-my $progname = $argv0; $progname =~ s@.*/@@g;
-my $version = q{ $Revision: 1.7 $ }; $version =~ s/^[^0-9]+([0-9.]+).*$/$1/;
-use Socket;
require Time::Local;
require POSIX;
use Fcntl ':flock'; # import LOCK_* constants
+use POSIX qw(strftime);
+use LWP::UserAgent;
+use bytes;
+
+
+my $progname = $0; $progname =~ s@.*/@@g;
+my $version = q{ $Revision: 1.162 $ }; $version =~ s/^[^0-9]+([0-9.]+).*$/$1/;
+my $copyright = "WebCollage $version, Copyright (c) 1999-2013" .
+ " Jamie Zawinski <jwz\@jwz.org>\n" .
+ " http://www.jwz.org/webcollage/\n";
+
+
+
+my @search_methods = (
+ # Google is rate-limiting us now, so this works ok from
+ # a short-running screen saver, but not as a batch job.
+ # I haven't found a workaround.
+ #
+ 7, "googlephotos", \&pick_from_google_image_photos,
+ 5, "googleimgs", \&pick_from_google_images,
+ 5, "googlenums", \&pick_from_google_image_numbers,
+
+ # So let's try Bing instead. No rate limiting yet!
+ #
+ 7, "bingphotos", \&pick_from_bing_image_photos,
+ 6, "bingimgs", \&pick_from_bing_images,
+ 6, "bingnums", \&pick_from_bing_image_numbers,
+
+ 19, "flickr_recent", \&pick_from_flickr_recent,
+ 15, "flickr_random", \&pick_from_flickr_random,
+ 20, "instagram", \&pick_from_instagram,
+ 6, "livejournal", \&pick_from_livejournal_images,
+ 4, "yahoorand", \&pick_from_yahoo_random_link,
+
+ # Twitter destroyed their whole API in 2013.
+ # 0, "twitpic", \&pick_from_twitpic_images,
+ # 0, "twitter", \&pick_from_twitter_images,
+
+ # This is a cute way to search for a certain webcams.
+ # Not included in default methods, since these images
+ # aren't terribly interesting by themselves.
+ # See also "SurveillanceSaver".
+ #
+ 0, "securitycam", \&pick_from_security_camera,
+
+ # Nonfunctional as of June 2011.
+ # 0, "altavista", \&pick_from_alta_vista_random_link,
+
+ # In Apr 2002, Google asked me to stop searching them.
+ # I asked them to add a "random link" url. They said
+ # "that would be easy, we'll think about it" and then
+ # never wrote back. Booo Google! Booooo! So, screw
+ # those turkeys, I've turned Google searching back on.
+ # I'm sure they can take it. (Jan 2005.)
+
+ # Jan 2005: Yahoo fucked up their search form so that
+ # it's no longer possible to do "or" searches on news
+ # images, so we rarely get any hits there any more.
+ #
+ # 0, "yahoonews", \&pick_from_yahoo_news_text,
+
+ # Dec 2004: the ircimages guy's server can't take the
+ # heat, so he started banning the webcollage user agent.
+ # I tried to convince him to add a lighter-weight page to
+ # support webcollage better, but he doesn't care.
+ #
+ # 0, "ircimages", \&pick_from_ircimages,
+
+ # Dec 2002: Alta Vista has a new "random link" URL now.
+ # They added it specifically to better support webcollage!
+ # That was super cool of them. This is how we used to do
+ # it, before:
+ #
+ # 0, "avimages", \&pick_from_alta_vista_images,
+ # 0, "avtext", \&pick_from_alta_vista_text,
+
+ # This broke in 2004. Eh, Lycos sucks anyway.
+ #
+ # 0, "lycos", \&pick_from_lycos_text,
+
+ # This broke in 2003, I think. I suspect Hotbot is
+ # actually the same search engine data as Lycos.
+ #
+ # 0, "hotbot", \&pick_from_hotbot_text,
+ );
+
+# programs we can use to write to the root window (tried in ascending order.)
+#
+my @root_displayers = (
+ "xscreensaver-getimage -root -file",
+ "chbg -once -xscreensaver -max_size 100",
+ "xv -root -quit -viewonly +noresetroot -quick24 -rmode 5" .
+ " -rfg black -rbg black",
+ "xli -quiet -onroot -center -border black",
+ "xloadimage -quiet -onroot -center -border black",
+# this lame program wasn't built with vroot.h:
+# "xsri -scale -keep-aspect -center-horizontal -center-vertical",
+);
-# CGI Parameters
-my $data_dir = ""; # if you want the following files to go in
- # some directory below ".", name it here.
+# Some sites need cookies to work properly. These are they.
+#
+my %cookies = (
+ "www.altavista.com" => "AV_ALL=1", # request uncensored searches
+ "web.altavista.com" => "AV_ALL=1",
-my $image_ppm = "${data_dir}collage.ppm"; # names of the various data files.
-my $image_tmp = "${data_dir}collage.tmp";
-my $image_jpg = "${data_dir}collage.jpg";
-my $pending_file = "${data_dir}collage.pending";
-my $map_file = "${data_dir}collage.map";
+ # log in as "cipherpunk"
+ "www.nytimes.com" => 'NYT-S=18cHMIlJOn2Y1bu5xvEG3Ufuk6E1oJ.' .
+ 'FMxWaQV0igaB5Yi/Q/guDnLeoL.pe7i1oakSb' .
+ '/VqfdUdb2Uo27Vzt1jmPn3cpYRlTw9',
-my $url_generation_time = 60; # total time to spend getting URLs.
-my $image_retrieval_time = 60; # maximum time to spend loading all images.
-my $max_map_entries = 100; # how many lines to save in $map_file.
-my $pastes_per_load = 3; # how many images to try and paste each time.
+ "ircimages.com" => 'disclaimer=1',
+);
-my $max_age = 5 * 60; # minutes before it is considered stale.
-my $scale = 1.0; # client-side image expansion.
-my $img_width = 800; # size of the image being generated.
-my $img_height = 600;
+# If this is set, it's a helper program to use for pasting images together:
+# this is a lot faster and more efficient than using PPM pipelines, which is
+# what we do if this program doesn't exist. (We check for "webcollage-helper"
+# on $PATH at startup, and set this variable appropriately.)
+#
+my $webcollage_helper = undef;
-my @all_files = ($image_ppm, $image_tmp, $image_jpg, $pending_file, $map_file);
-my $script_date;
-# Other Parameters
+# If we have the webcollage-helper program, then it will paste the images
+# together with transparency! 0.0 is invisible, 1.0 is totally opaque.
+#
+my $opacity = 0.85;
-my $random_redirector = "http://random.yahoo.com/bin/ryl";
-my $image_randomizer_a = "http://image.altavista.com/";
-my $image_randomizer = $image_randomizer_a . "cgi-bin/avncgi" .
- "?do=3&verb=no&oshape=n&oorder=" .
- "&ophoto=1&oart=1&ocolor=1&obw=1" .
- "&stype=simage&oprem=0&query=";
-my $http_timeout = 30;
-my $ppm_to_root_window_cmd = "xv -root -rmode 5 -viewonly" .
- " +noresetroot %%PPM%% -quit";
-my $filter_cmd = undef;
-my $post_filter_cmd = undef;
-my $background = undef;
-my $no_output_p = 0;
-my $urls_only_p = 0;
-my $delay = 0;
+# Some sites have managed to poison the search engines. These are they.
+# (We auto-detect sites that have poisoned the search engines via excessive
+# keywords or dictionary words, but these are ones that slip through
+# anyway.)
+#
+# This can contain full host names, or 2 or 3 component domains.
+#
+my %poisoners = (
+ "die.net" => 1, # 'l33t h4ck3r d00dz.
+ "genforum.genealogy.com" => 1, # Cluttering avtext with human names.
+ "rootsweb.com" => 1, # Cluttering avtext with human names.
+ "akamai.net" => 1, # Lots of sites have their images on Akamai.
+ "akamaitech.net" => 1, # But those are pretty much all banners.
+ # Since Akamai is super-expensive, let's
+ # go out on a limb and assume that all of
+ # their customers are rich-and-boring.
+ "bartleby.com" => 1, # Dictionary, cluttering avtext.
+ "encyclopedia.com" => 1, # Dictionary, cluttering avtext.
+ "onlinedictionary.datasegment.com" => 1, # Dictionary, cluttering avtext.
+ "hotlinkpics.com" => 1, # Porn site that has poisoned avimages
+ # (I don't see how they did it, though!)
+ "alwayshotels.com" => 1, # Poisoned Lycos pretty heavily.
+ "nextag.com" => 1, # Poisoned Alta Vista real good.
+ "ghettodriveby.com" => 1, # Poisoned Google Images.
+ "crosswordsolver.org" => 1, # Poisoned Google Images.
+ "xona.com" => 1, # Poisoned Google Images.
+ "freepatentsonline.com" => 1, # Poisoned Google Images.
+ "herbdatanz.com" => 1, # Poisoned Google Images.
+);
+
+
+# When verbosity is turned on, we warn about sites that we seem to be hitting
+# a lot: usually this means some new poisoner has made it into the search
+# engines. But sometimes, the warning is just because that site has a lot
+# of stuff on it. So these are the sites that are immune to the "frequent
+# site" diagnostic message.
+#
+my %warningless_sites = (
+ "home.earthlink.net" => 1,
+ "www.angelfire.com" => 1,
+ "members.aol.com" => 1,
+ "img.photobucket.com" => 1,
+ "pics.livejournal.com" => 1,
+ "tinypic.com" => 1,
+ "flickr.com" => 1,
+ "staticflickr.com" => 1,
+ "pbase.com" => 1,
+ "blogger.com" => 1,
+ "multiply.com" => 1,
+ "wikimedia.org" => 1,
+ "twitpic.com" => 1,
+ "amazonaws.com" => 1,
+ "blogspot.com" => 1,
+ "photoshelter.com" => 1,
+ "myspacecdn.com" => 1,
+ "feedburner.com" => 1,
+ "wikia.com" => 1,
+ "ljplus.ru" => 1,
+ "yandex.ru" => 1,
+ "imgur.com" => 1,
+ "yfrog.com" => 1,
+
+ "yimg.com" => 1, # This is where dailynews.yahoo.com stores
+ "eimg.com" => 1, # its images, so pick_from_yahoo_news_text()
+ # hits this every time.
+
+ "images.quizfarm.com" => 1, # damn those LJ quizzes...
+ "images.quizilla.com" => 1,
+ "images.quizdiva.net" => 1,
+
+ "driftnet" => 1, # builtin...
+ "local-directory" => 1, # builtin...
+);
+
+
+# For decoding HTML-encoded character entities to URLs.
+#
+my %entity_table = (
+ "apos" => '\'',
+ "quot" => '"', "amp" => '&', "lt" => '<',
+ "gt" => '>', "nbsp" => ' ', "iexcl" => '',
+ "cent" => "\xA2", "pound" => "\xA3", "curren" => "\xA4",
+ "yen" => "\xA5", "brvbar" => "\xA6", "sect" => "\xA7",
+ "uml" => "\xA8", "copy" => "\xA9", "ordf" => "\xAA",
+ "laquo" => "\xAB", "not" => "\xAC", "shy" => "\xAD",
+ "reg" => "\xAE", "macr" => "\xAF", "deg" => "\xB0",
+ "plusmn" => "\xB1", "sup2" => "\xB2", "sup3" => "\xB3",
+ "acute" => "\xB4", "micro" => "\xB5", "para" => "\xB6",
+ "middot" => "\xB7", "cedil" => "\xB8", "sup1" => "\xB9",
+ "ordm" => "\xBA", "raquo" => "\xBB", "frac14" => "\xBC",
+ "frac12" => "\xBD", "frac34" => "\xBE", "iquest" => "\xBF",
+ "Agrave" => "\xC0", "Aacute" => "\xC1", "Acirc" => "\xC2",
+ "Atilde" => "\xC3", "Auml" => "\xC4", "Aring" => "\xC5",
+ "AElig" => "\xC6", "Ccedil" => "\xC7", "Egrave" => "\xC8",
+ "Eacute" => "\xC9", "Ecirc" => "\xCA", "Euml" => "\xCB",
+ "Igrave" => "\xCC", "Iacute" => "\xCD", "Icirc" => "\xCE",
+ "Iuml" => "\xCF", "ETH" => "\xD0", "Ntilde" => "\xD1",
+ "Ograve" => "\xD2", "Oacute" => "\xD3", "Ocirc" => "\xD4",
+ "Otilde" => "\xD5", "Ouml" => "\xD6", "times" => "\xD7",
+ "Oslash" => "\xD8", "Ugrave" => "\xD9", "Uacute" => "\xDA",
+ "Ucirc" => "\xDB", "Uuml" => "\xDC", "Yacute" => "\xDD",
+ "THORN" => "\xDE", "szlig" => "\xDF", "agrave" => "\xE0",
+ "aacute" => "\xE1", "acirc" => "\xE2", "atilde" => "\xE3",
+ "auml" => "\xE4", "aring" => "\xE5", "aelig" => "\xE6",
+ "ccedil" => "\xE7", "egrave" => "\xE8", "eacute" => "\xE9",
+ "ecirc" => "\xEA", "euml" => "\xEB", "igrave" => "\xEC",
+ "iacute" => "\xED", "icirc" => "\xEE", "iuml" => "\xEF",
+ "eth" => "\xF0", "ntilde" => "\xF1", "ograve" => "\xF2",
+ "oacute" => "\xF3", "ocirc" => "\xF4", "otilde" => "\xF5",
+ "ouml" => "\xF6", "divide" => "\xF7", "oslash" => "\xF8",
+ "ugrave" => "\xF9", "uacute" => "\xFA", "ucirc" => "\xFB",
+ "uuml" => "\xFC", "yacute" => "\xFD", "thorn" => "\xFE",
+ "yuml" => "\xFF",
+
+ # HTML 4 entities that do not have 1:1 Latin1 mappings.
+ "bull" => "*", "hellip"=> "...", "prime" => "'", "Prime" => "\"",
+ "frasl" => "/", "trade" => "[tm]", "larr" => "<-", "rarr" => "->",
+ "harr" => "<->", "lArr" => "<=", "rArr" => "=>", "hArr" => "<=>",
+ "empty" => "\xD8", "minus" => "-", "lowast"=> "*", "sim" => "~",
+ "cong" => "=~", "asymp" => "~", "ne" => "!=", "equiv" => "==",
+ "le" => "<=", "ge" => ">=", "lang" => "<", "rang" => ">",
+ "loz" => "<>", "OElig" => "OE", "oelig" => "oe", "Yuml" => "Y",
+ "circ" => "^", "tilde" => "~", "ensp" => " ", "emsp" => " ",
+ "thinsp"=> " ", "ndash" => "-", "mdash" => "--", "lsquo" => "`",
+ "rsquo" => "'", "sbquo" => "'", "ldquo" => "\"", "rdquo" => "\"",
+ "bdquo" => "\"", "lsaquo"=> "<", "rsaquo"=> ">",
+);
-my $wordlist = "/usr/dict/words";
-if (!-r $wordlist) {
- $wordlist = "/usr/share/lib/dict/words"; # irix
-}
+##############################################################################
+#
+# Various global flags set by command line parameters, or computed
+#
+##############################################################################
+
+
+my $current_state = "???"; # for diagnostics
+my $load_method;
+my $last_search;
+my $image_succeeded = -1;
+my $suppress_audit = 0;
+my $verbose_imgmap = 0; # print out rectangles and URLs only (stdout)
+my $verbose_warnings = 0; # print out warnings when things go wrong
+my $verbose_load = 0; # diagnostics about loading of URLs
+my $verbose_filter = 0; # diagnostics about page selection/rejection
+my $verbose_net = 0; # diagnostics about network I/O
+my $verbose_pbm = 0; # diagnostics about PBM pipelines
+my $verbose_http = 0; # diagnostics about all HTTP activity
+my $verbose_exec = 0; # diagnostics about executing programs
+
+my $report_performance_interval = 60 * 15; # print some stats every 15 minutes
+
+my $http_proxy = undef;
+my $http_timeout = 20;
+my $cvt_timeout = 10;
my $min_width = 50;
my $min_height = 50;
my $min_ratio = 1/5;
-my $DEBUG = 0;
+my $min_gif_area = (120 * 120);
+
+
+my $no_output_p = 0;
+my $urls_only_p = 0;
+my $cocoa_p = 0;
+my $imagemap_base = undef;
+
+my @pids_to_kill = (); # forked pids we should kill when we exit, if any.
+
+my $driftnet_magic = 'driftnet';
+my $driftnet_dir = undef;
+my $default_driftnet_cmd = "driftnet -a -m 100";
+my $local_magic = 'local-directory';
+my $local_dir = undef;
+
+my $wordlist;
+
+my %rejected_urls;
+my @tripwire_words = ("aberrate", "abode", "amorphous", "antioch",
+ "arrhenius", "arteriole", "blanket", "brainchild",
+ "burdensome", "carnival", "cherub", "chord", "clever",
+ "dedicate", "dilogarithm", "dolan", "dryden",
+ "eggplant");
##############################################################################
# returns three values: the HTTP response line; the document headers;
# and the document body.
#
-sub get_document_1 {
- my ( $url, $referer, $timeout ) = @_;
-
- if (!defined($timeout)) { $timeout = $http_timeout; }
- if ($timeout <= 0) { return undef; }
- if ($timeout > $http_timeout) { $timeout = $http_timeout; }
-
- if ( $DEBUG > 3 ) {
- print STDERR "get_document_1 $url " .
- ($referer ? $referer : "") . "\n";
+sub get_document_1($$$) {
+ my ($url, $referer, $timeout) = @_;
+
+ if (!defined($timeout)) { $timeout = $http_timeout; }
+ if ($timeout > $http_timeout) { $timeout = $http_timeout; }
+
+ my $user_agent = "$progname/$version";
+
+ if ($url =~ m@^http://www\.altavista\.com/@ ||
+ $url =~ m@^http://random\.yahoo\.com/@ ||
+ $url =~ m@^http://images\.google\.com/@ ||
+ $url =~ m@^http://www\.google\.com/@) {
+ # block this, you turkeys.
+ $user_agent = "Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.1.7)" .
+ " Gecko/20070914 Firefox/2.0.0.7";
+
+ # 28-Jun-2007: Google Images now emits the entire page in JS if
+ # you claim to be Gecko. They also still block "webcollage".
+ # They serve non-JS for unrecognised agents, so let's try this...
+ $user_agent = "NoJavascriptPlease/1.0"
+ if ($url =~ m@^http://[a-z]+\.google\.com/@);
+ }
+
+ my $ua = LWP::UserAgent->new;
+ $ua->env_proxy();
+ $ua->agent ("$progname/$version");
+ $ua->default_header ('Referer' => $referer);
+ $ua->timeout($timeout) if $timeout;
+
+ if ($verbose_http) {
+ LOG (1, " ==> GET $url");
+ LOG (1, " ==> User-Agent: $user_agent");
+ LOG (1, " ==> Referer: $referer") if $referer;
+ }
+
+ my $res = $ua->get ($url);
+
+ my $http = ($res ? $res->status_line : '') || '';
+ my $head = ($res ? $res->headers()->as_string : '') || '';
+ my $body = ($res && $res->is_success ? $res->decoded_content : '') || '';
+
+ LOG ($verbose_net, "get_document_1 $url " . ($referer ? $referer : ""));
+
+ $head =~ s/\r\n/\n/gs;
+ $head =~ s/\r/\n/gs;
+ if ($verbose_http) {
+ foreach (split (/\n/, $head)) {
+ LOG ($verbose_http, " <== $_");
}
+ }
- my($url_proto, $dummy, $serverstring, $path) = split(/\//, $url, 4);
- if (! ($url_proto && $url_proto =~ m/^http:$/i)) {
- if ($DEBUG) { print STDERR "not an HTTP URL: $url\n"; }
- return undef;
- }
- my($them,$port) = split(/:/, $serverstring);
- $port = 80 unless $port;
- my $size="";
-
- my ($remote, $iaddr, $paddr, $proto, $line);
- $remote = $them;
- if ($port =~ /\D/) { $port = getservbyname($port, 'tcp') }
- return unless $port;
- $iaddr = inet_aton($remote) || return;
- $paddr = sockaddr_in($port, $iaddr);
-
- @_ =
- eval {
- local $SIG{ALRM} = sub {
- if ($DEBUG > 0) {
- print STDERR "timed out ($timeout) for $url\n";
- }
- die "alarm\n" };
- alarm $timeout;
-
- $proto = getprotobyname('tcp');
- socket(S, PF_INET, SOCK_STREAM, $proto) || return;
- connect(S, $paddr) || return;
-
- select(S); $| = 1; select(STDOUT);
-
- print S ("GET /$path HTTP/1.0\n" .
- "Host: $them\n" .
- "User-Agent: $progname/$version\n" .
- ($referer ? "Referer: $referer\n" : "") .
- "\n");
-
- my $http = <S>;
-
- my $head = "";
- my $body = "";
- while (<S>) {
- $head .= $_;
- last if m@^[\r\n]@;
- }
- while (<S>) {
- $body .= $_;
- }
+ my @L = split(/\r\n|\r|\n/, $body);
+ my $lines = @L;
+ LOG ($verbose_http,
+ " <== [ body ]: $lines lines, " . length($body) . " bytes");
- close S;
+ if (!$http) {
+ LOG (($verbose_net || $verbose_load), "null response: $url");
+ return ();
+ }
- return ( $http, $head, $body );
- };
- die if ($@ && $@ ne "alarm\n"); # propagate errors
- if ($@) {
- # timed out
- return undef;
- } else {
- # didn't
- alarm 0;
- return @_;
- }
+ return ( $http, $head, $body );
}
# returns two values: the document headers; and the document body.
# if the given URL did a redirect, returns the redirected-to document.
#
-sub get_document {
- my ( $url, $referer, $timeout ) = @_;
- my $start = time;
+sub get_document($$;$) {
+ my ($url, $referer, $timeout) = @_;
+ my $start = time;
+
+ if (defined($referer) && $referer eq $driftnet_magic) {
+ return get_driftnet_file ($url);
+ }
+
+ if (defined($referer) && $referer eq $local_magic) {
+ return get_local_file ($url);
+ }
+
+ my $orig_url = $url;
+ my $loop_count = 0;
+ my $max_loop_count = 4;
+
+ do {
+ if (defined($timeout) && $timeout <= 0) {
+ LOG (($verbose_net || $verbose_load), "timed out for $url");
+ $suppress_audit = 1;
+ return ();
+ }
+
+ my ( $http, $head, $body ) = get_document_1 ($url, $referer, $timeout);
- do {
- if (defined($timeout) && $timeout <= 0) { return undef; }
+ if (defined ($timeout)) {
+ my $now = time;
+ my $elapsed = $now - $start;
+ $timeout -= $elapsed;
+ $start = $now;
+ }
+
+ return () unless $http; # error message already printed
+
+ $http =~ s/[\r\n]+$//s;
- my ( $http, $head, $body ) = get_document_1 ($url, $referer, $timeout);
+ if ( $http =~ m@^HTTP/[0-9.]+ 30[123]@ ) {
+ $_ = $head;
- if (defined ($timeout)) {
- my $now = time;
- my $elapsed = $now - $start;
- $timeout -= $elapsed;
- $start = $now;
+ my ( $location ) = m@^location:[ \t]*(.*)$@im;
+ if ( $location ) {
+ $location =~ s/[\r\n]$//;
+
+ LOG ($verbose_net, "redirect from $url to $location");
+ $referer = $url;
+ $url = $location;
+
+ if ($url =~ m@^/@) {
+ $referer =~ m@^(http://[^/]+)@i;
+ $url = $1 . $url;
+ } elsif (! ($url =~ m@^[a-z]+:@i)) {
+ $_ = $referer;
+ s@[^/]+$@@g if m@^http://[^/]+/@i;
+ $_ .= "/" if m@^http://[^/]+$@i;
+ $url = $_ . $url;
}
- return undef if ( ! $body );
+ } else {
+ LOG ($verbose_net, "no Location with \"$http\"");
+ return ( $url, $body );
+ }
+
+ if ($loop_count++ > $max_loop_count) {
+ LOG ($verbose_net,
+ "too many redirects ($max_loop_count) from $orig_url");
+ $body = undef;
+ return ();
+ }
+
+ } elsif ( $http =~ m@^HTTP/[0-9.]+ ([4-9][0-9][0-9].*)$@ ) {
- if ( $http =~ m@HTTP/[0-9.]+ 30[23]@ ) {
- $_ = $head;
- my ( $location ) = m@^location:[ \t]*(.*)$@im;
- if ( $location ) {
+ LOG (($verbose_net || $verbose_load), "failed: $1 ($url)");
- if ( $DEBUG > 3 ) {
- print STDERR "redirect from $url to $location\n";
- }
- $referer = $url;
- $url = $location;
- } else {
- return ( $url, $body );
- }
+ # http errors -- return nothing.
+ $body = undef;
+ return ();
- } elsif ( $http =~ m@HTTP/[0-9.]+ [4-9][0-9][0-9]@ ) {
- # http errors -- return nothing.
- return undef;
+ } elsif (!$body) {
- } else {
+ LOG (($verbose_net || $verbose_load), "document contains no data: $url");
+ return ();
- return ( $url, $body );
- }
+ } else {
+
+ # ok!
+ return ( $url, $body );
+ }
+
+ } while (1);
+}
- } while (1);
+# If we already have a cookie defined for this site, and the site is trying
+# to overwrite that very same cookie, let it do so. This is because nytimes
+# expires its cookies - it lets you upgrade to a new cookie without logging
+# in again, but you have to present the old cookie to get the new cookie.
+# So, by doing this, the built-in cypherpunks cookie will never go "stale".
+#
+sub set_cookie($$) {
+ my ($host, $cookie) = @_;
+ my $oc = $cookies{$host};
+ return unless $oc;
+ $_ = $oc;
+ my ($oc_name, $oc_value) = m@^([^= \t\r\n]+)=(.*)$@;
+ $_ = $cookie;
+ my ($nc_name, $nc_value) = m@^([^= \t\r\n]+)=(.*)$@;
+
+ if ($oc_name eq $nc_name &&
+ $oc_value ne $nc_value) {
+ $cookies{$host} = $cookie;
+ LOG ($verbose_net, "overwrote ${host}'s $oc_name cookie");
+ }
}
-# given a URL and the body text at that URL, selects and returns a random
-# image from it. returns undef if no suitable images found.
+############################################################################
+#
+# Extracting image URLs from HTML
#
-sub pick_image_from_body {
- my ( $base, $body ) = @_;
+############################################################################
- $_ = $base;
+# given a URL and the body text at that URL, selects and returns a random
+# image from it. returns () if no suitable images found.
+#
+sub pick_image_from_body($$) {
+ my ($url, $body) = @_;
+
+ my $base = $url;
+ $_ = $url;
+
+ # if there's at least one slash after the host, take off the last
+ # pathname component
+ if ( m@^http://[^/]+/@io ) {
+ $base =~ s@[^/]+$@@go;
+ }
+
+ # if there are no slashes after the host at all, put one on the end.
+ if ( m@^http://[^/]+$@io ) {
+ $base .= "/";
+ }
+
+ $_ = $body;
+
+ # strip out newlines, compress whitespace
+ s/[\r\n\t ]+/ /go;
+
+ # nuke comments
+ s/<!--.*?-->//go;
+
+
+ # There are certain web sites that list huge numbers of dictionary
+ # words in their bodies or in their <META NAME=KEYWORDS> tags (surprise!
+ # Porn sites tend not to be reputable!)
+ #
+ # I do not want webcollage to filter on content: I want it to select
+ # randomly from the set of images on the web. All the logic here for
+ # rejecting some images is really a set of heuristics for rejecting
+ # images that are not really images: for rejecting *text* that is in
+ # GIF/JPEG/PNG form. I don't want text, I want pictures, and I want
+ # the content of the pictures to be randomly selected from among all
+ # the available content.
+ #
+ # So, filtering out "dirty" pictures by looking for "dirty" keywords
+ # would be wrong: dirty pictures exist, like it or not, so webcollage
+ # should be able to select them.
+ #
+ # However, picking a random URL is a hard thing to do. The mechanism I'm
+ # using is to search for a selection of random words. This is not
+ # perfect, but works ok most of the time. The way it breaks down is when
+ # some URLs get precedence because their pages list *every word* as
+ # related -- those URLs come up more often than others.
+ #
+ # So, after we've retrieved a URL, if it has too many keywords, reject
+ # it. We reject it not on the basis of what those keywords are, but on
+ # the basis that by having so many, the page has gotten an unfair
+ # advantage against our randomizer.
+ #
+ my $trip_count = 0;
+ foreach my $trip (@tripwire_words) {
+ $trip_count++ if m/$trip/i;
+ }
+
+ if ($trip_count >= $#tripwire_words - 2) {
+ LOG (($verbose_filter || $verbose_load),
+ "there is probably a dictionary in \"$url\": rejecting.");
+ $rejected_urls{$url} = -1;
+ $body = undef;
+ $_ = undef;
+ return ();
+ }
+
+
+ my @urls;
+ my %unique_urls;
+
+ foreach (split(/ *</)) {
+ if ( m/^meta.*["']keywords["']/i ) {
+
+ # Likewise, reject any web pages that have a KEYWORDS meta tag
+ # that is too long.
+ #
+ my $L = length($_);
+ if ($L > 1000) {
+ LOG (($verbose_filter || $verbose_load),
+ "excessive keywords ($L bytes) in $url: rejecting.");
+ $rejected_urls{$url} = $L;
+ $body = undef;
+ $_ = undef;
+ return ();
+ } else {
+ LOG ($verbose_filter, " keywords ($L bytes) in $url (ok)");
+ }
+
+ } elsif (m/^ (IMG|A) \b .* (SRC|HREF) \s* = \s* ["']? (.*?) [ "'<>] /six ||
+ m/^ (LINK|META) \b .* (REL|PROPERTY) \s* = \s*
+ ["']? (image_src|og:image) ["']? /six) {
+
+ my $was_inline = (lc($1) eq 'img');
+ my $was_meta = (lc($1) eq 'link' || lc($1) eq 'meta');
+ my $link = $3;
+
+ # For <link rel="image_src" href="...">
+ # and <meta property="og:image" content="...">
+ #
+ if ($was_meta) {
+ next unless (m/ (HREF|CONTENT) \s* = \s* ["']? (.*?) [ "'<>] /six);
+ $link = $2;
+ }
+
+ my ( $width ) = m/width ?=[ \"]*(\d+)/oi;
+ my ( $height ) = m/height ?=[ \"]*(\d+)/oi;
+ $_ = $link;
+
+ if ( m@^/@o ) {
+ my $site;
+ ( $site = $base ) =~ s@^(http://[^/]*).*@$1@gio;
+ $_ = "$site$link";
+ } elsif ( ! m@^[^/:?]+:@ ) {
+ $_ = "$base$link";
+ s@/\./@/@g;
+ 1 while (s@/[^/]+/\.\./@/@g);
+ }
+
+ # skip non-http
+ if ( ! m@^http://@io ) {
+ next;
+ }
+
+ # skip non-image
+ if ( ! m@[.](gif|jpg|jpeg|pjpg|pjpeg|png)$@io ) {
+ next;
+ }
+
+ # skip really short or really narrow images
+ if ( $width && $width < $min_width) {
+ if (!$height) { $height = "?"; }
+ LOG ($verbose_filter, " skip narrow image $_ (${width}x$height)");
+ next;
+ }
+
+ if ( $height && $height < $min_height) {
+ if (!$width) { $width = "?"; }
+ LOG ($verbose_filter, " skip short image $_ (${width}x$height)");
+ next;
+ }
+
+ # skip images with ratios that make them look like banners.
+ if ($min_ratio && $width && $height &&
+ ($width * $min_ratio ) > $height) {
+ if (!$height) { $height = "?"; }
+ LOG ($verbose_filter, " skip bad ratio $_ (${width}x$height)");
+ next;
+ }
+
+ # skip GIFs with a small number of pixels -- those usually suck.
+ if ($width && $height &&
+ m/\.gif$/io &&
+ ($width * $height) < $min_gif_area) {
+ LOG ($verbose_filter, " skip small GIF $_ (${width}x$height)");
+ next;
+ }
+
+ # skip images with a URL that indicates a Yahoo thumbnail.
+ if (m@\.yimg\.com/.*/t/@) {
+ if (!$width) { $width = "?"; }
+ if (!$height) { $height = "?"; }
+ LOG ($verbose_filter, " skip yahoo thumb $_ (${width}x$height)");
+ next;
+ }
+
+ my $url = $_;
+
+ if ($unique_urls{$url}) {
+ LOG ($verbose_filter, " skip duplicate image $_");
+ next;
+ }
+
+ LOG ($verbose_filter,
+ " image $url" .
+ ($width && $height ? " (${width}x${height})" : "") .
+ ($was_meta ? " (meta)" : $was_inline ? " (inline)" : ""));
+
+
+ my $weight = 1;
+
+ if ($was_meta) {
+ $weight = 20; # meta tag images are far preferable to inline images.
+ } else {
+ if ($url !~ m@[.](gif|png)$@io ) {
+ $weight += 2; # JPEGs are preferable to GIFs and PNGs.
+ }
+ if (! $was_inline) {
+ $weight += 4; # pointers to images are preferable to inlined images.
+ }
+ }
- # if there's at least one slash after the host, take off the last
- # pathname component
- if ( m@^http://[^/]+/@io ) {
- ( $base = $base ) =~ s@[^/]+$@@go;
+ $unique_urls{$url}++;
+ for (my $i = 0; $i < $weight; $i++) {
+ $urls[++$#urls] = $url;
+ }
}
+ }
- # if there are no slashes after the host at all, put one on the end.
- if ( m@^http://[^/]+$@io ) {
- $base .= "/";
- }
+ my $fsp = ($body =~ m@<frameset@i);
- if ( $DEBUG > 3 ) {
- print STDERR "base is $base\n";
- }
+ $_ = undef;
+ $body = undef;
+ @urls = depoison (@urls);
- $_ = $body;
-
- # strip out newlines, compress whitespace
- s/[\r\n\t ]+/ /go;
-
- # nuke comments
- s/<!--.*?-->//go;
-
- my @urls;
- my %unique_urls;
-
- foreach (split(/ *</)) {
- if ( m/^(img|a) .*(src|href) ?= ?\"? ?(.*?)[ >\"]/io ) {
-
- my $was_inline = ( "$1" eq "a" || "$1" eq "A" );
- my $link = $3;
- my ( $width ) = m/width ?=[ \"]*([0-9]+)/oi;
- my ( $height ) = m/height ?=[ \"]*([0-9]+)/oi;
- $_ = $link;
-
- if ( m@^/@o ) {
- my $site;
- ( $site = $base ) =~ s@^(http://[^/]*).*@$1@gio;
- $_ = "$site$link";
- } elsif ( ! m@^[^/:?]+:@ ) {
- $_ = "$base$link";
- s@/\./@/@g;
- while (s@/\.\./@/@g) {
- }
- }
-
- # skip non-http
- if ( ! m@^http://@io ) {
- next;
- }
-
- # skip non-image
- if ( ! m@[.](gif|jpg|jpeg|pjpg|pjpeg)$@io ) {
- next;
- }
-
-# # skip GIF?
-# if ( m@[.](gif)@io ) {
-## if ( $DEBUG > 2 ) { print STDERR "skip GIF $_\n"; }
-# next;
-# }
-
- # skip really short or really narrow images
- if ( $width && $width < $min_width) {
- if ( $DEBUG > 2 ) {
- if (!$height) { $height = "?"; }
- print STDERR "skip narrow image $_ ($width x $height)\n";
- }
- next;
- }
-
- if ( $height && $height < $min_height) {
- if ( $DEBUG > 2 ) {
- if (!$width) { $width = "?"; }
- print STDERR "skip short image $_ ($width x $height)\n";
- }
- next;
- }
-
- # skip images with ratios that make them look like banners.
- if ( $min_ratio && $width && $height &&
- ($width * $min_ratio ) > $height ) {
- if ( $DEBUG > 2 ) {
- if (!$height) { $height = "?"; }
- print STDERR "skip bad ratio $_ ($width x $height)\n";
- }
- next;
- }
-
- my $url = $_;
-
- if ( $unique_urls{$url} ) {
- if ( $DEBUG > 2 ) { print STDERR "skip duplicate image $_\n"; }
- next;
- }
-
- if ( $DEBUG > 2 ) {
- print STDERR "got $url" .
- ($width && $height ? " (${width}x${height})" : "") .
- ($was_inline ? " (inline)" : "") . "\n";
- }
-
- $urls[++$#urls] = $url;
- $unique_urls{$url}++;
-
- # jpegs are preferable to gifs.
- $_ = $url;
- if ( ! m@[.]gif$@io ) {
- $urls[++$#urls] = $url;
- }
-
- # pointers to images are preferable to inlined images.
- if ( ! $was_inline ) {
- $urls[++$#urls] = $url;
- $urls[++$#urls] = $url;
- }
- }
- }
+ if ( $#urls < 0 ) {
+ LOG ($verbose_load, "no images on $base" . ($fsp ? " (frameset)" : ""));
+ return ();
+ }
- if ( $#urls == 0 ) {
- if ( $DEBUG > 2 ) {
- print STDERR "no images on $base\n";
- }
- return undef;
- }
+ # pick a random element of the table
+ my $i = int(rand($#urls+1));
+ $url = $urls[$i];
- return undef if ( $#urls < 1 );
+ LOG ($verbose_load, "picked image " .($i+1) . "/" . ($#urls+1) . ": $url");
- # pick a random element of the table
- my $i = ((rand() * 99999) % $#urls);
- my $url = $urls[$i];
+ return $url;
+}
- if ( $DEBUG > 2 ) {
- print STDERR "picked $url\n";
- }
- return $url;
+# Given a URL and the RSS feed from that URL, pick a random image from
+# the feed. This is a lot simpler than extracting images out of a page:
+# we already know we have reasonable images, so we just pick one.
+# Returns: the real URL of the page (preferably not the RSS version),
+# and the image.
+
+sub pick_image_from_rss($$) {
+ my ( $url, $body ) = @_;
+ my @suitable = ($body =~ m/<enclosure url="(.*?)"/g);
+
+ my ($base) = ($body =~ m@<link>([^<>]+)</link>@i);
+ $base = $url unless $base;
+
+ # pick a random element of the table
+ if (@suitable) {
+ my $i = int(rand(scalar @suitable));
+ my $url = $suitable[$i];
+ LOG ($verbose_load, "picked image " .($i+1) . "/" .
+ ($#suitable+1) . ": $url");
+ return ($base, $url);
+ }
+ return;
}
+\f
+############################################################################
+#
+# Subroutines for getting pages and images out of search engines
+#
+############################################################################
+
+
+sub pick_dictionary() {
+ my @dicts = ("/usr/dict/words",
+ "/usr/share/dict/words",
+ "/usr/share/lib/dict/words",
+ "/usr/share/dict/cracklib-small",
+ "/usr/share/dict/cracklib-words"
+ );
+ foreach my $f (@dicts) {
+ if (-f $f) {
+ $wordlist = $f;
+ last;
+ }
+ }
+ error ("$dicts[0] does not exist") unless defined($wordlist);
+}
-# Using the URL-randomizer, picks a random image on a random page, and
-# returns two URLs: the page containing the image, and the image.
-# Returns undef if nothing found this time.
+# returns a random word from the dictionary
#
-sub pick_from_url_randomizer {
- my ( $timeout ) = @_;
+sub random_word() {
- if ( $DEBUG > 3 ) {
- print STDERR "\n\npicking from $random_redirector...\n\n";
- }
+ return undef unless open (my $in, '<', $wordlist);
- my ( $base, $body ) = get_document ($random_redirector, undef, $timeout);
+ my $size = (stat($in))[7];
+ my $word = undef;
+ my $count = 0;
- return if (!$base || !$body);
- my $img = pick_image_from_body ($base, $body);
+ while (1) {
+ error ("looping ($count) while reading $wordlist")
+ if (++$count > 100);
- if ($img) {
- return ($base, $img);
- } else {
- return undef;
+ my $pos = int (rand ($size));
+ if (seek ($in, $pos, 0)) {
+ $word = <$in>; # toss partial line
+ $word = <$in>; # keep next line
}
+
+ next unless ($word);
+ next if ($word =~ m/^[-\']/);
+
+ $word = lc($word);
+ $word =~ s/^.*-//s;
+ $word =~ s/^[^a-z]+//s;
+ $word =~ s/[^a-z]+$//s;
+ $word =~ s/\'s$//s;
+ $word =~ s/ys$/y/s;
+ $word =~ s/ally$//s;
+ $word =~ s/ly$//s;
+ $word =~ s/ies$/y/s;
+ $word =~ s/ally$/al/s;
+ $word =~ s/izes$/ize/s;
+ $word =~ s/esses$/ess/s;
+ $word =~ s/(.{5})ing$/$1/s;
+
+ next if (length ($word) > 14);
+ last if ($word);
+ }
+
+ close ($in);
+
+ if ( $word =~ s/\s/\+/gs ) { # convert intra-word spaces to "+".
+ $word = "\%22$word\%22"; # And put quotes (%22) around it.
+ }
+
+ return $word;
}
-sub random_word {
-
- my $word = 0;
- if (open (IN, "<$wordlist")) {
- my $size = (stat(IN))[7];
- my $pos = rand $size;
- if (seek (IN, $pos, 0)) {
- $word = <IN>; # toss partial line
- $word = <IN>; # keep next line
- }
- close (IN);
- }
+sub random_words($) {
+ my ($sep) = @_;
+ return (random_word() . $sep .
+ random_word() . $sep .
+ random_word() . $sep .
+ random_word() . $sep .
+ random_word());
+}
- return 0 if (!$word);
- $word =~ s/^[ \t\n\r]+//;
- $word =~ s/[ \t\n\r]+$//;
- $word =~ s/ys$/y/;
- $word =~ s/ally$//;
- $word =~ s/ly$//;
- $word =~ s/ies$/y/;
- $word =~ s/ally$/al/;
- $word =~ s/izes$/ize/;
- $word =~ tr/A-Z/a-z/;
+sub url_quote($) {
+ my ($s) = @_;
+ $s =~ s|([^-a-zA-Z0-9.\@/_\r\n])|sprintf("%%%02X", ord($1))|ge;
+ return $s;
+}
+
+sub url_unquote($) {
+ my ($s) = @_;
+ $s =~ s/[+]/ /g;
+ $s =~ s/%([a-z0-9]{2})/chr(hex($1))/ige;
+ return $s;
+}
- return $word;
+sub html_quote($) {
+ my ($s) = @_;
+ $s =~ s/&/&/gi;
+ $s =~ s/</</gi;
+ $s =~ s/>/>/gi;
+ $s =~ s/\"/"/gi;
+ return $s;
}
+sub html_unquote($) {
+ my ($s) = @_;
+ $s =~ s/(&([a-z]+);)/{ $entity_table{$2} || $1; }/gexi; # e.g., '
+ $s =~ s/(&\#(\d+);)/{ chr($2) }/gexi; # e.g., '
+ return $s;
+}
-# Using the image-randomizer, picks a random image on a random page, and
-# returns two URLs: the page containing the image, and the image.
-# Returns undef if nothing found this time.
+# Loads the given URL (a search on some search engine) and returns:
+# - the total number of hits the search engine claimed it had;
+# - a list of URLs from the page that the search engine returned;
+# Note that this list contains all kinds of internal search engine
+# junk URLs too -- caller must prune them.
#
-sub pick_from_image_randomizer {
- my ( $timeout ) = @_;
+sub pick_from_search_engine($$$) {
+ my ( $timeout, $search_url, $words ) = @_;
- my $words = random_word;
- $words .= "%20" . random_word;
- $words .= "%20" . random_word;
- $words .= "%20" . random_word;
- $words .= "%20" . random_word;
+ $_ = $words;
+ s/%20/ /g;
- my $search_url = $image_randomizer . $words;
+ print STDERR "\n\n" if ($verbose_load);
- if ( $DEBUG > 3 ) {
- $_ = $words; s/%20/ /g; print STDERR "search words: $_\n";
- }
+ LOG ($verbose_load, "words: $_");
+ LOG ($verbose_load, "URL: $search_url");
- if ( $DEBUG > 3 ) {
- print STDERR "\n\npicking from $search_url\n";
- }
+ $last_search = $search_url; # for warnings
- my $start = time;
- my ( $base, $body ) = get_document ($search_url, undef, $timeout);
- if (defined ($timeout)) {
- $timeout -= (time - $start);
- return undef if ($timeout <= 0);
+ my $start = time;
+ my ( $base, $body ) = get_document ($search_url, undef, $timeout);
+ if (defined ($timeout)) {
+ $timeout -= (time - $start);
+ if ($timeout <= 0) {
+ $body = undef;
+ LOG (($verbose_net || $verbose_load),
+ "timed out (late) for $search_url");
+ $suppress_audit = 1;
+ return ();
}
+ }
- return undef if (! $body);
-
-
- my @subpages;
- my $skipped = 0;
+ return () if (! $body);
- $_ = $body;
- s/(<A )/\n$1/gi;
- foreach (split(/\n/)) {
- if ( m@<A HREF=([^>]+)><IMG SRC=http://image\.altavista\.com@i ) {
+ my @subpages;
- my $u = $1;
- if (m/^"(.*)"$/) { $u = $1; }
+ if ($body =~ m/^\{\"/s) { # Google AJAX JSON response.
- if (m@\.corbis\.com/@) {
- $skipped = 1;
- if ( $DEBUG > 3 ) {
- print STDERR "skipping corbis URL: $_\n";
- }
- next;
- } elsif ( $DEBUG > 3 ) {
- print STDERR "sub-page: $1\n";
- }
-
- $subpages[++$#subpages] = $u;
- }
+ my @chunks = split (/"GsearchResultClass"/, $body);
+ shift @chunks;
+ my $body2 = '';
+ my $n = 1;
+ foreach (@chunks) {
+ my ($img) = m/"unescapedUrl":"(.*?)"/si;
+ my ($url) = m/"originalContextUrl":"(.*?)"/si;
+ next unless ($img && $url);
+ $url = ("/imgres" .
+ "?imgurl=" . url_quote($img) .
+ "&imgrefurl=" . url_quote($url) .
+ "&...");
+ $body2 .= "<A HREF=\"" . html_quote($url) . "\">$n</A>\n";
+ $n++;
}
-
- if ( $#subpages <= 0 ) {
- if (!$skipped) {
- print STDERR "Found nothing on $base\n";
- }
- return undef;
+ $body = $body2 if $body2;
+ }
+
+ my $search_count = "?";
+ if ($body =~ m@found (approximately |about )?(<B>)?(\d+)(</B>)? image@) {
+ $search_count = $3;
+ } elsif ($body =~ m@<NOBR>((\d{1,3})(,\d{3})*) @i) {
+ $search_count = $1;
+ } elsif ($body =~ m@found ((\d{1,3})(,\d{3})*|\d+) Web p@) {
+ $search_count = $1;
+ } elsif ($body =~ m@found about ((\d{1,3})(,\d{3})*|\d+) results@) {
+ $search_count = $1;
+ } elsif ($body =~ m@\b\d+ - \d+ of (\d+)\b@i) { # avimages
+ $search_count = $1;
+ } elsif ($body =~ m@About ((\d{1,3})(,\d{3})*) images@i) { # avimages
+ $search_count = $1;
+ } elsif ($body =~ m@We found ((\d{1,3})(,\d{3})*|\d+) results@i) { # *vista
+ $search_count = $1;
+ } elsif ($body =~ m@ of about <B>((\d{1,3})(,\d{3})*)<@i) { # googleimages
+ $search_count = $1;
+ } elsif ($body =~ m@<B>((\d{1,3})(,\d{3})*)</B> Web sites were found@i) {
+ $search_count = $1; # lycos
+ } elsif ($body =~ m@WEB.*?RESULTS.*?\b((\d{1,3})(,\d{3})*)\b.*?Matches@i) {
+ $search_count = $1; # hotbot
+ } elsif ($body =~ m@no photos were found containing@i) { # avimages
+ $search_count = "0";
+ } elsif ($body =~ m@found no document matching@i) { # avtext
+ $search_count = "0";
+ }
+ 1 while ($search_count =~ s/^(\d+)(\d{3})/$1,$2/);
+
+# if ($search_count eq "?" || $search_count eq "0") {
+# my $file = "/tmp/wc.html";
+# open (my $out, '>', $file) || error ("writing $file: $!");
+# print $out $body;
+# close $out;
+# print STDERR blurb() . "###### wrote $file\n";
+# }
+
+
+ my $length = length($body);
+ my $href_count = 0;
+
+ $_ = $body;
+
+ s/[\r\n\t ]+/ /g;
+
+
+ s/(<A )/\n$1/gi;
+ foreach (split(/\n/)) {
+ $href_count++;
+ my ($u) = m@<A\s.*\bHREF\s*=\s*([^>]+)>@i;
+ next unless $u;
+
+ if (m/\bm="{(.*?)}"/s) { # Bing info is inside JSON crud
+ my $json = html_unquote($1);
+ my ($href) = ($json =~ m/\bsurl:"(.*?)"/s);
+ my ($img) = ($json =~ m/\bimgurl:"(.*?)"/s);
+ $u = "$img\t$href" if ($img && $href);
+
+ } elsif ($u =~ m/^\"([^\"]*)\"/) { $u = $1 # quoted string
+ } elsif ($u =~ m/^([^\s]*)\s/) { $u = $1; # or token
}
- # pick a random element of the table
- my $i = ((rand() * 99999) % $#subpages);
- my $subpage = $subpages[$i];
-
- if ( $DEBUG > 3 ) {
- print STDERR "picked page $subpage\n";
+ if ( $rejected_urls{$u} ) {
+ LOG ($verbose_filter, " pre-rejecting candidate: $u");
+ next;
}
+ LOG ($verbose_http, " HREF: $u");
+ $subpages[++$#subpages] = $u;
+ }
- my ( $base2, $body2 ) = get_document ($subpage, $base, $timeout);
-
- return undef if (!$base2 || !body2);
+ if ( $#subpages < 0 ) {
+ LOG ($verbose_filter,
+ "found nothing on $base ($length bytes, $href_count links).");
+ return ();
+ }
- my $img = pick_image_from_body ($base2, $body2);
+ LOG ($verbose_filter, "" . $#subpages+1 . " links on $search_url");
- if ($img) {
- return ($base2, $img);
- } else {
- return undef;
- }
+ return ($search_count, @subpages);
}
-# Picks a random image on a random page, and returns two URLs:
-# the page containing the image, and the image.
-# Returns undef if nothing found this time.
-# Uses the url-randomizer 1 time in 5, else the image randomizer.
-#
-sub pick_image {
- my ( $timeout ) = @_;
+sub depoison(@) {
+ my (@urls) = @_;
+ my @urls2 = ();
+ foreach (@urls) {
+ my ($h) = m@^http://([^/: \t\r\n]+)@i;
- if (int(rand 5) == 0) {
- return pick_from_url_randomizer ($timeout);
- } else {
- return pick_from_image_randomizer ($timeout);
+ next unless defined($h);
+
+ if ($poisoners{$h}) {
+ LOG (($verbose_filter), " rejecting poisoner: $_");
+ next;
+ }
+ if ($h =~ m@([^.]+\.[^.]+\.[^.]+)$@ &&
+ $poisoners{$1}) {
+ LOG (($verbose_filter), " rejecting poisoner: $_");
+ next;
}
+ if ($h =~ m@([^.]+\.[^.]+)$@ &&
+ $poisoners{$1}) {
+ LOG (($verbose_filter), " rejecting poisoner: $_");
+ next;
+ }
+
+ push @urls2, $_;
+ }
+ return @urls2;
}
-# Given the raw body of a GIF document, returns the dimensions of the image.
+# given a list of URLs, picks one at random; loads it; and returns a
+# random image from it.
+# returns the url of the page loaded; the url of the image chosen.
#
-sub gif_size {
- my ($body) = @_;
- my $type = substr($body, 0, 6);
- my $s;
- return undef unless ($type =~ /GIF8[7,9]a/);
- $s = substr ($body, 6, 10);
- my ($a,$b,$c,$d) = unpack ("C"x4, $s);
- return (($b<<8|$a), ($d<<8|$c));
-}
+sub pick_image_from_pages($$$$@) {
+ my ($base, $total_hit_count, $unfiltered_link_count, $timeout, @pages) = @_;
-# Given the raw body of a JPEG document, returns the dimensions of the image.
-#
-sub jpeg_size {
- my ($body) = @_;
- my $i = 0;
- my $L = length($body);
-
- $c1 = substr($body, $i, 1); $i++;
- $c2 = substr($body, $i, 1); $i++;
- return undef unless (ord($c1) == 0xFF && ord($c2) == 0xD8);
-
- my $ch = "0";
- while (ord($ch) != 0xDA && $i < $L) {
- # Find next marker, beginning with 0xFF.
- while (ord($ch) != 0xFF) {
- $ch = substr($body, $i, 1); $i++;
- }
- # markers can be padded with any number of 0xFF.
- while (ord($ch) == 0xFF) {
- $ch = substr($body, $i, 1); $i++;
- }
+ $total_hit_count = "?" unless defined($total_hit_count);
- # $ch contains the value of the marker.
- my $marker = ord($ch);
-
- if (($marker >= 0xC0) &&
- ($marker <= 0xCF) &&
- ($marker != 0xC4) &&
- ($marker != 0xCC)) { # it's a SOFn marker
- $i += 3;
- my $s = substr($body, $i, 4); $i += 4;
- my ($a,$b,$c,$d) = unpack("C"x4, $s);
- return (($c<<8|$d), ($a<<8|$b));
-
- } else {
- # We must skip variables, since FFs in variable names aren't
- # valid JPEG markers.
- my $s = substr($body, $i, 2); $i += 2;
- my ($c1, $c2) = unpack ("C"x2, $s);
- my $length = ($c1 << 8) | $c2;
- return undef if ($length < 2);
- $i += $length-2;
- }
- }
- return undef;
-}
+ @pages = depoison (@pages);
+ LOG ($verbose_load,
+ "" . ($#pages+1) . " candidates of $unfiltered_link_count links" .
+ " ($total_hit_count total)");
-# Given the raw body of a GIF or JPEG document, returns the dimensions of
-# the image.
-#
-sub image_size {
- my ($body) = @_;
- my ($w, $h) = gif_size ($body);
- if ($w && $h) { return ($w, $h); }
- return jpeg_size ($body);
-}
+ return () if ($#pages < 0);
+ my $i = int(rand($#pages+1));
+ my $page = $pages[$i];
-# returns the full path of the named program, or undef.
-#
-sub which {
- my ($prog) = @_;
- foreach (split (/:/, $ENV{PATH})) {
- if (-x "$_/$prog") {
- return $prog;
- }
- }
- return undef;
-}
+ LOG ($verbose_load, "picked page $page");
-##############################################################################
-#
-# Running as a CGI
-#
-##############################################################################
+ $suppress_audit = 1;
-my $body_tag = "<BODY BGCOLOR=\"#000000\" TEXT=\"#DDFFDD\"\n" .
- " LINK=\"#00EEEE\" VLINK=\"#EEEE00\" ALINK=\"#FF0000\">\n";
-
-my $html_document =
- ("" .
- "<HTML>\n" .
- "<HEAD>\n" .
- " <TITLE>WebCollage</TITLE>\n" .
- "\n" .
- "</HEAD>\n" .
- $body_tag .
- "\n" .
- "<CENTER><FONT SIZE=1><BR></FONT>" .
- "<TABLE BORDER=0 CELLPADDING=0 CELLSPACING=0 WIDTH=720>\n" .
- " <TR>\n" .
- " <TD ALIGN=CENTER VALIGN=TOP NOWRAP>\n" .
- " <FONT SIZE=\"+3\"><B>WebCollage: </B></FONT>\n" .
- " <FONT SIZE=\"-1\"><BR><B>by\n" .
- " <A HREF=\"http://www.jwz.org/\">Jamie Zawinski</A></B>\n" .
- " </TD>\n" .
- " <TD ALIGN=LEFT VALIGN=TOP>\n" .
- "\n" .
- " <P><FONT SIZE=\"+3\"><B>Exterminate All Rational Thought.\n" .
- " </B></FONT>\n" .
- " <BR>This program creates collages out of random images\n" .
- " found on the Web.\n" .
- " <P>More images are being added to the\n" .
- " collage now: please wait for the image below to load.\n" .
- " This will take a minute or two, since it has to contact\n" .
- " other web sites to retrieve the images before it can construct\n" .
- " the collage. Once the image below is loaded, you can reload\n" .
- " this page to do it again.\n" .
- " <P>If you enjoy this, you might also enjoy\n" .
- " <A HREF=\"http://www.jwz.org/dadadodo/\">DadaDodo</A>.\n" .
- " WebCollage also works as a screen saver, for those of you\n" .
- " using Unix: it is included with the\n" .
- " <A HREF=\"http://www.jwz.org/xscreensaver/\">XScreenSaver</A>\n" .
- " package.<P>\n" .
- " </TD>\n" .
- " </TR>\n" .
- " <TR>\n" .
- " <TD COLSPAN=2 VALIGN=TOP ALIGN=CENTER><TABLE \n" .
- " BORDER=2 WIDTH=%%WIDTH%% HEIGHT=%%HEIGHT%% \n" .
- " CELLPADDING=0 CELLSPACING=0>\n" .
- " <TR><TD BGCOLOR=\"#C0C0C0\">\n" .
- " %%MAP%%\n" .
- " <A NAME=\"#image\">\n" .
- " <IMG SRC=\"%%IMAGE%%\" BORDER=0 \n" .
- " WIDTH=%%WIDTH%% HEIGHT=%%HEIGHT%% \n" .
- " USEMAP=\"#collage\"></A></TD></TR>\n" .
- " </TABLE></TD>\n" .
- " </TR>\n" .
- "</TABLE>\n" .
- "<P>\n" .
- "</CENTER>\n");
-
-
-my @time_fmt_days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
-my @time_fmt_months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun",
- "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
-
-# Converts a time_t to a string acceptable to HTTP.
-#
-sub format_http_time {
- my ($time) = @_;
- my @t = gmtime($time);
- my ($sec, $min, $hour, $mday, $mon, $year, $wday) = @t;
- $year += 1900;
- $wday = $time_fmt_days[$wday];
- $mon = $time_fmt_months[$mon];
- return sprintf("%s, %02d %s %d %02d:%02d:%02d GMT",
- $wday, $mday, $mon, $year, $hour, $min, $sec);
-}
-
-
-
-# Parses exactly the time format that HTTP requires, no more, no less.
-#
-sub parse_http_time {
- ($_) = @_;
-
- if (!m/^[SMTWF][a-z][a-z]+, (\d\d)[- ]([JFMAJSOND][a-z][a-z]+)[- ](\d\d\d?\d?)[- ](\d\d):(\d\d):(\d\d)( GMT)?$/o) {
- return undef;
- }
+ my ( $base2, $body2 ) = get_document ($page, $base, $timeout);
- my @moy = qw(Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec);
- @moy{@moy} = (1..12);
+ if (!$base2 || !$body2) {
+ $body2 = undef;
+ return ();
+ }
- my $t = Time::Local::timegm($6, $5, $4, $1, $moy{$2}-1,
- ($3 < 100 ? $3 : $3-1900));
- return ($t < 0 ? undef : $t);
-}
+ my $img = pick_image_from_body ($base2, $body2);
+ $body2 = undef;
+ if ($img) {
+ return ($base2, $img);
+ } else {
+ return ();
+ }
+}
-# Given a modification time, returns a time_t to use as the expiration time
-# of both the HTML and the JPEG.
+\f
+############################################################################
#
-sub compute_expires_time {
- my ($mod_time) = (@_);
- my $now = time;
- if ($mod_time < $now) { $mod_time = $now; }
- return $mod_time + $max_age;
-}
+# Pick images from random pages returned by the Yahoo Random Link
+#
+############################################################################
+
+# yahoorand
+my $yahoo_random_link = "http://random.yahoo.com/fast/ryl";
-# Parse the If-Modified-Since header, and write a response if appropriate.
-# If this returns 1, we're done.
+# Picks a random page; picks a random image on that page;
+# returns two URLs: the page containing the image, and the image.
+# Returns () if nothing found this time.
#
-sub do_ifmod {
- # see http://vancouver-webpages.com/proxy/log-tail.pl and
- # http://mnot.cbd.net.au/cache_docs/ for clues about how to
- # do cacheing properly with CGI-generated documents.
- my ($mod_time) = (@_);
- if ($ENV{HTTP_IF_MODIFIED_SINCE}) {
- my $ims = $ENV{HTTP_IF_MODIFIED_SINCE};
- $ims =~ s/;.*// ; # lose trailing "; length=3082"
- $ims = parse_http_time($ims);
- if ($ims && $mod_time <= $ims) {
- print "Status: 304 Not Modified\n\n" ;
- return 1;
- }
- }
- return 0;
-}
+sub pick_from_yahoo_random_link($) {
+ my ($timeout) = @_;
+ print STDERR "\n\n" if ($verbose_load);
+ LOG ($verbose_load, "URL: $yahoo_random_link");
-# Returns N urls of images (and the pages on which they were found.)
-# Unless there is a significant surplus of URLs in the $pending_file,
-# this will spend $url_generation_time seconds generating as many URLs
-# as it can. The first N will be returned, and the rest will be left
-# in the file.
-#
-sub get_image_urls {
- my ($count) = @_;
+ $last_search = $yahoo_random_link; # for warnings
- my @urls;
- my $body = "";
- my $file_count = 0;
+ $suppress_audit = 1;
- local *PEND;
+ my ( $base, $body ) = get_document ($yahoo_random_link, undef, $timeout);
+ if (!$base || !$body) {
+ $body = undef;
+ return;
+ }
- # Open and lock the file (read/write.)
- # rewind after locking, in case we had to wait for the lock.
- #
- open (PEND, "+<$pending_file") || die "couldn't open $pending_file: $!";
+ LOG ($verbose_load, "redirected to: $base");
- if ($DEBUG > 2) { print STDERR "jpeg: opened $pending_file\n"; }
+ my $img = pick_image_from_body ($base, $body);
+ $body = undef;
- my $flock_wait = time;
- flock (PEND, LOCK_EX) || die "couldn't lock $pending_file: $!";
- $flock_wait = (time - $flock_wait);
+ if ($img) {
+ return ($base, $img);
+ } else {
+ return ();
+ }
+}
- seek (PEND, 0, 0) || die "couldn't rewind $pending_file: $!";
+\f
+############################################################################
+#
+# Pick images from random pages returned by the Alta Vista Random Link
+# Note: this seems to have gotten a *lot* less random lately (2007).
+#
+############################################################################
- if ($DEBUG > 2) { print STDERR "jpeg: locked $pending_file\n"; }
+# altavista
+my $alta_vista_random_link = "http://www.altavista.com/image/randomlink";
- # Take N URLs off the top, and leave the rest.
- #
- while (<PEND>) {
- if (--$count >= 0) {
- if ($DEBUG > 3) { print STDERR " < $_"; }
- s/[\r\n]+$//;
- $urls[++$#urls] = $_;
- } else {
- $body .= $_;
- if ($DEBUG > 3) { print STDERR " - $_"; }
- $file_count++;
- }
- }
+# Picks a random page; picks a random image on that page;
+# returns two URLs: the page containing the image, and the image.
+# Returns () if nothing found this time.
+#
+sub pick_from_alta_vista_random_link($) {
+ my ($timeout) = @_;
- # rewind and overwrite the file
- seek (PEND, 0, 0) || die "couldn't rewind $pending_file: $!";
- truncate (PEND, 0) || die "couldn't truncate $pending_file: $!";
- print PEND $body;
+ print STDERR "\n\n" if ($verbose_load);
+ LOG ($verbose_load, "URL: $alta_vista_random_link");
+ $last_search = $alta_vista_random_link; # for warnings
- # If there are fewer than 3x as many URLs as we took left in the file,
- # then generate as many URLs as we can in N seconds. Take what we
- # need from that, and append the rest to the file. Note that we are
- # still holding a lock on the file.
- #
- # Count the time spent waiting for flock as time spent gathering URLs.
- # Because that means someone else was doing it.
- #
- $body = "";
- if ($file_count < $count * 3) {
- my $timeout = $url_generation_time - $flock_wait;
- my $start = time;
-
- while (1) {
- last if ($timeout <= 0);
-
- if ($DEBUG > 2) { print STDERR "time remaining: $timeout\n"; }
- my ($base, $img) = pick_image ($timeout);
-
- if ($img) {
- $img =~ s/ /%20/g;
- $base =~ s/ /%20/g;
- $_ = "$img $base";
- if ($count-- >= 0) {
- if ($DEBUG > 3) { print STDERR " << $img\n"; }
- $urls[++$#urls] = $_;
- } else {
- if ($DEBUG > 3) { print STDERR " >> $img\n"; }
- print PEND "$_\n"; # append to file
- $file_count++;
- }
- }
-
- my $now = time;
- my $elapsed = $now - $start;
- $timeout -= $elapsed;
- $start = $now;
- }
- }
+ $suppress_audit = 1;
- my $of = select(PEND); $| = 1; select($of); # flush output
- print PEND "";
+ my ( $base, $body ) = get_document ($alta_vista_random_link,
+ undef, $timeout);
+ if (!$base || !$body) {
+ $body = undef;
+ return;
+ }
- flock (PEND, LOCK_UN) || die "couldn't unlock $pending_file: $!";
- close (PEND) || die "couldn't close $pending_file: $!";
+ LOG ($verbose_load, "redirected to: $base");
- if ($DEBUG > 2) {
- print STDERR "jpeg: closed $pending_file; $file_count urls in file;" .
- " returning $#urls.\n";
- }
+ my $img = pick_image_from_body ($base, $body);
+ $body = undef;
- return @urls;
+ if ($img) {
+ return ($base, $img);
+ } else {
+ return ();
+ }
}
+\f
+############################################################################
+#
+# Pick images by feeding random words into Alta Vista Image Search
+#
+############################################################################
-sub cgi_reset_all_files {
- foreach (@all_files) {
- my $file = $_;
- local *OUT;
- open (OUT, "+<$file") || die "couldn't open $file: $!";
- flock (OUT, LOCK_EX) || die "couldn't lock $file: $!";
- truncate (OUT, 0) || die "couldn't truncate $file: $!";
- flock (OUT, LOCK_UN) || die "couldn't unlock $file: $!";
- close (OUT) || die "couldn't close $file: $!";
- }
-
- system "ppmmake '#000000' $img_width $img_height > $image_ppm" ||
- die "failed to create blank $image_ppm file: $!";
- system "cjpeg -progressive $image_ppm > $image_jpg" ||
- die "failed to create blank $image_jpg file: $!";
-}
+my $alta_vista_images_url = "http://www.altavista.com/image/results" .
+ "?ipht=1" . # photos
+ "&igrph=1" . # graphics
+ "&iclr=1" . # color
+ "&ibw=1" . # b&w
+ "&micat=1" . # no partner sites
+ "&sc=on" . # "site collapse"
+ "&q=";
-# Given the URL of an image and the page on which it was found, this will
-# load the image, and paste it at a random spot in $image_ppm and $img_jpg.
-# It will also update $map_file to contain the appropriate referer, and
-# will limit it to $max_map_entries lines.
-#
-sub cgi_paste_image {
- my ($img, $referer) = @_;
+# avimages
+sub pick_from_alta_vista_images($) {
+ my ($timeout) = @_;
- my ( $base, $body ) = get_document ($img, $referer);
- return if (!$base || !$body);
+ my $words = random_word();
+ my $page = (int(rand(9)) + 1);
+ my $search_url = $alta_vista_images_url . $words;
- my ($iw, $ih) = image_size ($body);
- return if (!$iw || !$ih);
+ if ($page > 1) {
+ $search_url .= "&pgno=" . $page; # page number
+ $search_url .= "&stq=" . (($page-1) * 12); # first hit result on page
+ }
- if ($DEBUG > 2) { print STDERR "got $base ($iw x $ih)\n"; }
+ my ($search_hit_count, @subpages) =
+ pick_from_search_engine ($timeout, $search_url, $words);
- my $cmd;
+ my @candidates = ();
+ foreach my $u (@subpages) {
- if ($base =~ m/\.gif$/i) {
- $cmd = "giftopnm";
- } else {
- $cmd = "djpeg";
- }
+ # avimages is encoding their URLs now.
+ next unless ($u =~ s/^.*\*\*(http%3a.*$)/$1/gsi);
+ $u = url_unquote($u);
- if ($iw > $img_width || $ih > $img_height) {
- while ($iw > $img_width || $ih > $img_height) {
- $iw = int($iw / 2);
- $ih = int($ih / 2);
- }
- $cmd .= " | pnmscale -xysize $iw $ih";
- }
+ next unless ($u =~ m@^http://@i); # skip non-HTTP or relative URLs
+ next if ($u =~ m@[/.]altavista\.com\b@i); # skip altavista builtins
+ next if ($u =~ m@[/.]yahoo\.com\b@i); # yahoo and av in cahoots?
+ next if ($u =~ m@[/.]doubleclick\.net\b@i); # you cretins
+ next if ($u =~ m@[/.]clicktomarket\.com\b@i); # more cretins
- my $x = int (rand() * ($img_width - $iw));
- my $y = int (rand() * ($img_height - $ih));
+ next if ($u =~ m@[/.]viewimages\.com\b@i); # stacked deck
+ next if ($u =~ m@[/.]gettyimages\.com\b@i);
- $cmd .= " | pnmpaste - $x $y $image_ppm";
+ LOG ($verbose_filter, " candidate: $u");
+ push @candidates, $u;
+ }
+ return pick_image_from_pages ($search_url, $search_hit_count, $#subpages+1,
+ $timeout, @candidates);
+}
- local *MAP;
- local *PIPE_OUT;
- # Open and lock the map (read/write.)
- # rewind after locking, in case we had to wait for the lock.
- # This lock doubles as our lock on the image file itself.
- #
- open (MAP, "+<$map_file") || die "couldn't open $map_file: $!";
+\f
+############################################################################
+#
+# Pick images from Aptix security cameras
+# Cribbed liberally from google image search code.
+# By Jason Sullivan <jasonsul@us.ibm.com>
+#
+############################################################################
- if ($DEBUG > 2) { print STDERR "jpeg: opened $map_file\n"; }
+my $aptix_images_url = ("http://www.google.com/search" .
+ "?q=inurl:%22jpg/image.jpg%3Fr%3D%22");
- flock (MAP, LOCK_EX) || die "couldn't lock $map_file: $!";
- seek (MAP, 0, 0) || die "couldn't rewind $map_file: $!";
+# securitycam
+sub pick_from_security_camera($) {
+ my ($timeout) = @_;
- if ($DEBUG > 2) { print STDERR "jpeg: locked $map_file\n"; }
+ my $page = (int(rand(9)) + 1);
+ my $num = 20; # 20 images per page
+ my $search_url = $aptix_images_url;
- # Read in the first hundred lines of the map file.
- #
- my $map = "";
- my $count = 0;
- while (<MAP>) {
- last if ($count++ > $max_map_entries);
- $map .= $_;
- }
+ if ($page > 1) {
+ $search_url .= "&start=" . $page*$num; # page number
+ $search_url .= "&num=" . $num; #images per page
+ }
- # Add this entry to the front of the map data.
- #
- $map = "$x $y $iw $ih $referer\n" . $map;
+ my ($search_hit_count, @subpages) =
+ pick_from_search_engine ($timeout, $search_url, '');
+ my @candidates = ();
+ my %referers;
+ foreach my $u (@subpages) {
+ next if ($u =~ m@[/.]google\.com\b@i); # skip google builtins (most links)
+ next unless ($u =~ m@jpg/image.jpg\?r=@i); # All pics contain this
- # Ensure that the $image_ppm file exists and has a ppm in it.
- #
- my $ppm_size = $img_width * $img_height * 3 * 2;
- my $s = (stat($image_ppm))[7];
- if ($s < $ppm_size) {
-
- if ( $DEBUG ) {
- print STDERR "$image_ppm is $s bytes;" .
- " should be at least $ppm_size\n";
- print STDERR "resetting everything.";
- cgi_reset_all_files();
- }
+ LOG ($verbose_filter, " candidate: $u");
+ push @candidates, $u;
+ $referers{$u} = $u;
}
- # Paste the bits into the image. Note that the map file is still locked.
- #
- local *TMP;
- open (TMP, ">$image_tmp") || die "couldn't open $image_tmp: $!";
- close (TMP);
+ @candidates = depoison (@candidates);
+ return () if ($#candidates < 0);
+ my $i = int(rand($#candidates+1));
+ my $img = $candidates[$i];
+ my $ref = $referers{$img};
- if (! $DEBUG ) {
- $cmd = "( $cmd ) 2>/dev/null";
- }
+ LOG ($verbose_load, "picked image " . ($i+1) . ": $img (on $ref)");
+ return ($ref, $img);
+}
- $cmd .= " > $image_tmp";
- if ($DEBUG > 2) { print STDERR "executing $cmd\n"; }
-
- if (open(PIPE_OUT, "| $cmd")) {
- print PIPE_OUT $body;
- close(PIPE_OUT);
-
- if ($DEBUG > 2) { system "ls -ldF $image_tmp >&2"; }
-
- my @tmp_stat = stat($image_tmp);
- if (@tmp_stat && $tmp_stat[7] < 200) {
-# unlink ($image_tmp) || die "couldn't unlink $image_tmp: $!";
- open (OUT, ">$image_tmp") || die "$image_tmp unwritable: $!";
- close (OUT);
- if ($DEBUG > 2) { print STDERR "FAILED writing $image_ppm\n"; }
- } else {
-# rename ($image_tmp, $image_ppm) ||
-# die "couldn't rename $image_tmp to $image_ppm: $!";
- local *IN;
- local *OUT;
- open (IN, "+<$image_tmp") || die "$image_tmp unreadable: $!";
- open (OUT, ">$image_ppm") || die "$image_ppm unwritable: $!";
- while (<IN>) { print OUT $_; }
- truncate (IN, 0) || die "couldn't truncate $image_tmp: $!";
- close (IN);
- close (OUT) || die "couldn't write $image_ppm: $!";
- if ($DEBUG > 2) { print STDERR "wrote $image_ppm\n"; }
-
-
- # Now convert the PPM to a JPEG.
- #
- system "cjpeg -progressive $image_ppm > $image_tmp 2>/dev/null";
-
- @tmp_stat = stat($image_tmp);
- if (@tmp_stat && $tmp_stat[7] < 200) {
-# unlink ($image_tmp) || die "couldn't unlink $image_tmp: $!";
- open (OUT, ">$image_tmp") || die "$image_tmp unwritable: $!";
- close (OUT);
- if ($DEBUG > 2) { print STDERR "FAILED writing $image_jpg\n"; }
- } else {
-# rename ($image_tmp, $image_ppm) ||
-# die "couldn't rename $image_tmp to $image_ppm: $!";
- open (IN, "+<$image_tmp") || die "$image_tmp unreadable: $!";
- open (OUT, ">$image_jpg") || die "$image_jpg unwritable: $!";
- while (<IN>) { print OUT $_; }
- truncate (IN, 0) || die "couldn't truncate $image_tmp: $!";
- close (IN);
- close (OUT) || die "couldn't write $image_jpg: $!";
- if ($DEBUG > 2) { print STDERR "wrote $image_jpg\n"; }
- }
- }
+\f
+############################################################################
+#
+# Pick images by feeding random words into Google Image Search.
+# By Charles Gales <gales@us.ibm.com>
+#
+############################################################################
- # Overwrite the map data.
- #
- seek (MAP, 0, 0) || die "couldn't rewind $map_file: $!";
- truncate (MAP, 0) || die "couldn't truncate $map_file: $!";
- print MAP $map;
- }
- my $of = select(MAP); $| = 1; select($of); # flush output
- print MAP "";
+my $google_images_url = "http://ajax.googleapis.com/ajax/services/" .
+ "search/images" .
+ "?v=1.0" .
+ "&rsz=large" .
+ "&q=";
- flock (MAP, LOCK_UN) || die "couldn't unlock $map_file: $!";
- close (MAP) || die "couldn't close $map_file: $!";
+# googleimgs
+sub pick_from_google_images($;$$) {
+ my ($timeout, $words, $max_page) = @_;
- if ($DEBUG > 2) { print STDERR "jpeg: closed $map_file\n"; }
-}
+ if (!defined($words)) {
+ $words = random_word(); # only one word for Google
+ }
+ my $off = int(rand(40));
+ my $search_url = $google_images_url . $words . "&start=" . $off;
-sub cgi_generate_image {
+ my ($search_hit_count, @subpages) =
+ pick_from_search_engine ($timeout, $search_url, $words);
- $SIG{PIPE} = 'IGNORE';
+ my @candidates = ();
+ my %referers;
+ foreach my $u (@subpages) {
+ next unless ($u =~ m@imgres\?imgurl@i); # All pics start with this
+ next if ($u =~ m@[/.]google\.com\b@i); # skip google builtins
- my @urls = get_image_urls ($pastes_per_load);
- my $end_time = time + $image_retrieval_time;
+ $u = html_unquote($u);
+ if ($u =~ m@^/imgres\?imgurl=(.*?)&imgrefurl=(.*?)\&@) {
+ my $ref = $2;
+ my $img = $1;
+ $ref = url_decode($ref);
+ $img = url_decode($img);
- if ($DEBUG > 2) {
- print STDERR "loading $#urls images\n";
- }
+ $img = "http://$img" unless ($img =~ m/^https?:/i);
- foreach (@urls) {
- my ($img, $referer) = m/^([^ ]+) ([^ ]+)/;
- if ($img) {
- cgi_paste_image ($img, $referer);
- }
- last if (time > $end_time);
+ LOG ($verbose_filter, " candidate: $ref");
+ push @candidates, $img;
+ $referers{$img} = $ref;
}
+ }
+
+ @candidates = depoison (@candidates);
+ return () if ($#candidates < 0);
+ my $i = int(rand($#candidates+1));
+ my $img = $candidates[$i];
+ my $ref = $referers{$img};
+
+ LOG ($verbose_load, "picked image " . ($i+1) . ": $img (on $ref)");
+ return ($ref, $img);
}
-sub cgi_sanity_check {
- my $error = undef;
- foreach (@all_files) {
- if (! -e $_) { $error = "$_ does not exist.\n"; }
- elsif (! -r $_) { $error = "$_ is unreadable.\n"; }
- elsif (! -w $_) { $error = "$_ is unwritable.\n"; }
- last if ($error);
- }
+\f
+############################################################################
+#
+# Pick images by feeding random numbers into Google Image Search.
+# By jwz, suggested by Ian O'Donnell.
+#
+############################################################################
- return unless $error;
- print "Content-Type: text/html\n";
- print "\n\n<TITLE>Error</TITLE>$body_tag<H1>Error</H1>";
- print POSIX::getcwd() . "/" . $error . "<P>\n";
+# googlenums
+sub pick_from_google_image_numbers($) {
+ my ($timeout) = @_;
- $_ = join("</TT>, <TT>", @all_files);
- s/,([^,]*)$/, and$1/;
+ my $max = 9999;
+ my $number = int(rand($max));
- print "Each of the files: <TT>$_</TT>\n";
- print " must exist and be readable and writable by the httpd process\n";
- print "(which probably means they must be globally readable and\n";
- print "writable, since on most systems, CGI scripts run as the\n";
- print "user <I>nobody</I>.)\n<P>\n";
+ $number = sprintf("%04d", $number)
+ if (rand() < 0.3);
- exit (0);
+ pick_from_google_images ($timeout, "$number");
}
-# Write the encapsulating HTML document and associated HTTP headers.
-# This is fast -- it just writes out the wrapper document corresponding
-# to the data currently on disk. It is the loading of the sub-image
-# that does the real work.
+\f
+############################################################################
+#
+# Pick images by feeding random digital camera file names into
+# Google Image Search.
+# By jwz, inspired by the excellent Random Personal Picture Finder
+# at http://www.diddly.com/random/
+#
+############################################################################
+
+my @photomakers = (
+ #
+ # Common digital camera file name formats, as described at
+ # http://www.diddly.com/random/about.html
+ #
+ sub { sprintf ("dcp%05d.jpg", int(rand(4000))); }, # Kodak
+ sub { sprintf ("dsc%05d.jpg", int(rand(4000))); }, # Nikon
+ sub { sprintf ("dscn%04d.jpg", int(rand(4000))); }, # Nikon
+ sub { sprintf ("mvc-%03d.jpg", int(rand(999))); }, # Sony Mavica
+ sub { sprintf ("mvc%05d.jpg", int(rand(9999))); }, # Sony Mavica
+ sub { sprintf ("P101%04d.jpg", int(rand(9999))); }, # Olympus w/ date=101
+ sub { sprintf ("P%x%02d%04d.jpg", # Olympus
+ int(rand(0xC)), int(rand(30))+1,
+ rand(9999)); },
+ sub { sprintf ("IMG_%03d.jpg", int(rand(999))); }, # ?
+ sub { sprintf ("IMAG%04d.jpg", int(rand(9999))); }, # RCA and Samsung
+ sub { my $n = int(rand(9999)); # Canon
+ sprintf ("1%02d-%04d.jpg", int($n/100), $n); },
+ sub { my $n = int(rand(9999)); # Canon
+ sprintf ("1%02d-%04d_IMG.jpg",
+ int($n/100), $n); },
+ sub { sprintf ("IMG_%04d.jpg", int(rand(9999))); }, # Canon
+ sub { sprintf ("dscf%04d.jpg", int(rand(9999))); }, # Fuji Finepix
+ sub { sprintf ("pdrm%04d.jpg", int(rand(9999))); }, # Toshiba PDR
+ sub { sprintf ("IM%06d.jpg", int(rand(9999))); }, # HP Photosmart
+ sub { sprintf ("EX%06d.jpg", int(rand(9999))); }, # HP Photosmart
+# sub { my $n = int(rand(3)); # Kodak DC-40,50,120
+# sprintf ("DC%04d%s.jpg", int(rand(9999)),
+# $n == 0 ? 'S' : $n == 1 ? 'M' : 'L'); },
+ sub { sprintf ("pict%04d.jpg", int(rand(9999))); }, # Minolta Dimage
+ sub { sprintf ("P%07d.jpg", int(rand(9999))); }, # Kodak DC290
+# sub { sprintf ("%02d%02d%04d.jpg", # Casio QV3000, QV4000
+# int(rand(12))+1, int(rand(31))+1,
+# int(rand(999))); },
+# sub { sprintf ("%02d%x%02d%04d.jpg", # Casio QV7000
+# int(rand(6)), # year
+# int(rand(12))+1, int(rand(31))+1,
+# int(rand(999))); },
+ sub { sprintf ("IMGP%04d.jpg", int(rand(9999))); }, # Pentax Optio S
+ sub { sprintf ("PANA%04d.jpg", int(rand(9999))); }, # Panasonic vid still
+ sub { sprintf ("HPIM%04d.jpg", int(rand(9999))); }, # HP Photosmart
+ sub { sprintf ("PCDV%04d.jpg", int(rand(9999))); }, # ?
+ );
+
+
+# googlephotos
+sub pick_from_google_image_photos($) {
+ my ($timeout) = @_;
+
+ my $i = int(rand($#photomakers + 1));
+ my $fn = $photomakers[$i];
+ my $file = &$fn;
+ #$file .= "%20filetype:jpg";
+
+ pick_from_google_images ($timeout, $file);
+}
+
+\f
+############################################################################
+#
+# Pick images by feeding random words into Google Image Search.
+# By the way: fuck Microsoft.
#
-sub cgi_emit_html_document {
+############################################################################
+
+my $bing_images_url = "http://www.bing.com/images/async" .
+ "?CW=0" .
+ "&CH=0" .
+ "&q=";
+
+
+# bingimgs
+sub pick_from_bing_images($;$$) {
+ my ($timeout, $words, $max_page) = @_;
+
+ if (!defined($words)) {
+ $words = random_word(); # only one word for Bing
+ }
+
+ my $off = int(rand(300));
+ my $search_url = $bing_images_url . $words . "&first=" . $off;
+
+ my ($search_hit_count, @subpages) =
+ pick_from_search_engine ($timeout, $search_url, $words);
+
+ my @candidates = ();
+ my %referers;
+ foreach my $u (@subpages) {
+ my ($img, $ref) = ($u =~ m/^(.*?)\t(.*)$/s);
+ next unless $img;
+ LOG ($verbose_filter, " candidate: $ref");
+ push @candidates, $img;
+ $referers{$img} = $ref;
+ }
+
+ @candidates = depoison (@candidates);
+ return () if ($#candidates < 0);
+ my $i = int(rand($#candidates+1));
+ my $img = $candidates[$i];
+ my $ref = $referers{$img};
+
+ LOG ($verbose_load, "picked image " . ($i+1) . ": $img (on $ref)");
+ return ($ref, $img);
+}
+
- cgi_sanity_check;
- my $map_file_date;
- my $doc = $html_document;
+\f
+############################################################################
+#
+# Pick images by feeding random numbers into Bing Image Search.
+#
+############################################################################
- my $w2 = int ($img_width * $scale);
- my $h2 = int ($img_height * $scale);
- $doc =~ s/%%WIDTH%%/$w2/g;
- $doc =~ s/%%HEIGHT%%/$h2/g;
+# bingnums
+sub pick_from_bing_image_numbers($) {
+ my ($timeout) = @_;
- local *MAP;
- open (MAP, "<$map_file") || die "couldn't open $map_file: $!";
- if ($DEBUG > 2) { print STDERR "html: opened $map_file\n"; }
+ my $max = 9999;
+ my $number = int(rand($max));
- flock (MAP, LOCK_SH) || die "couldn't lock $map_file: $!";
- seek (MAP, 0, 0) || die "couldn't rewind $map_file: $!";
- if ($DEBUG > 2) { print STDERR "html: locked $map_file\n"; }
+ $number = sprintf("%04d", $number)
+ if (rand() < 0.3);
- $map_file_date = (stat(MAP))[9];
+ pick_from_bing_images ($timeout, "$number");
+}
- my $map = "<MAP NAME=\"collage\">\n";
- while (<MAP>) {
- my ($x, $y, $w, $h, $url) =
- m/^([0-9]+) ([0-9]+) ([0-9]+) ([0-9]+) (.*)$/;
- if ($w && $h) {
- $x = int($x * $scale);
- $y = int($y * $scale);
- $w = int($w * $scale);
- $h = int($h * $scale);
+\f
+############################################################################
+#
+# Pick images by feeding random numbers into Bing Image Search.
+#
+############################################################################
- # protect against URLs that contain <, >, or ".
- $url =~ s/([<>\"])/uc sprintf("%%%02X",ord($1))/eg;
+# bingphotos
+sub pick_from_bing_image_photos($) {
+ my ($timeout) = @_;
- my $x2 = $x + $w;
- my $y2 = $y + $h;
- $map .=
- "<AREA SHAPE=RECT COORDS=\"$x,$y,$x2,$y2\" HREF=\"$url\">\n";
- }
- }
- $map .= "</MAP>";
- flock (MAP, LOCK_UN) || die "couldn't unlock $map_file: $!";
- close (MAP) || die "couldn't close $map_file: $!";
+ my $i = int(rand($#photomakers + 1));
+ my $fn = $photomakers[$i];
+ my $file = &$fn;
- if ($DEBUG > 2) { print STDERR "html: closed $map_file\n"; }
+ pick_from_bing_images ($timeout, $file);
+}
- $doc =~ s/%%MAP%%/$map/g;
+\f
+############################################################################
+#
+# Pick images by feeding random words into Alta Vista Text Search
+#
+############################################################################
- my $img_name = "current";
- $doc =~ s@%%IMAGE%%@images/$img_name.jpg@g;
+my $alta_vista_url = "http://www.altavista.com/web/results" .
+ "?pg=aq" .
+ "&aqmode=s" .
+ "&filetype=html" .
+ "&sc=on" . # "site collapse"
+ "&nbq=50" .
+ "&aqo=";
+# avtext
+sub pick_from_alta_vista_text($) {
+ my ($timeout) = @_;
- my $mod_time = $map_file_date;
- if ($script_date > $mod_time) { $mod_time = $script_date; }
+ my $words = random_words('%20');
+ my $page = (int(rand(9)) + 1);
+ my $search_url = $alta_vista_url . $words;
- if (do_ifmod($mod_time)) {
- return;
- }
+ if ($page > 1) {
+ $search_url .= "&pgno=" . $page;
+ $search_url .= "&stq=" . (($page-1) * 10);
+ }
- my $exp = compute_expires_time($mod_time);
+ my ($search_hit_count, @subpages) =
+ pick_from_search_engine ($timeout, $search_url, $words);
- print "Content-Type: text/html\n";
- print "Content-Length: " . length($doc) . "\n";
- print "Last-Modified: " . format_http_time($mod_time) . "\n";
+ my @candidates = ();
+ foreach my $u (@subpages) {
- # This is a suggestion to consider the object invalid after the given
- # date. This is sometimes ignored.
+ # Those altavista fuckers are playing really nasty redirection games
+ # these days: the filter your clicks through their site, but use
+ # onMouseOver to make it look like they're not! Well, it makes it
+ # easier for us to identify search results...
#
- print "Expires: " . format_http_time($exp) . "\n";
+ next unless ($u =~ s/^.*\*\*(http%3a.*$)/$1/gsi);
+ $u = url_unquote($u);
- # This may or may not cause a cacheing proxy to pass this stuff along.
- # It's not standardized, but was historically used for... something.
- print "Pragma: no-cache\n";
+ next unless ($u =~ m@^http://@i); # skip non-HTTP or relative URLs
+ next if ($u =~ m@[/.]altavista\.com\b@i); # skip altavista builtins
+ next if ($u =~ m@[/.]yahoo\.com\b@i); # yahoo and av in cahoots?
- # This says the same thing as the Expires header, but it is a stronger
- # assertion that we're serious and should be listened to.
- #
- my $age = $exp - time;
- print "Cache-Control: max-age=$age, must-revalidate\n";
+ LOG ($verbose_filter, " candidate: $u");
+ push @candidates, $u;
+ }
- print "\n";
- print $doc;
+ return pick_image_from_pages ($search_url, $search_hit_count, $#subpages+1,
+ $timeout, @candidates);
}
-# Write the interior JPEG document and associated HTTP headers.
+\f
+############################################################################
+#
+# Pick images by feeding random words into Hotbot
#
-sub cgi_emit_jpeg_document {
+############################################################################
+
+my $hotbot_search_url =("http://hotbot.lycos.com/default.asp" .
+ "?ca=w" .
+ "&descriptiontype=0" .
+ "&imagetoggle=1" .
+ "&matchmode=any" .
+ "&nummod=2" .
+ "&recordcount=50" .
+ "&sitegroup=1" .
+ "&stem=1" .
+ "&cobrand=undefined" .
+ "&query=");
+
+sub pick_from_hotbot_text($) {
+ my ($timeout) = @_;
+
+ $last_search = $hotbot_search_url; # for warnings
+
+ # lycos seems to always give us back dictionaries and word lists if
+ # we search for more than one word...
+ #
+ my $words = random_word();
+
+ my $start = int(rand(8)) * 10 + 1;
+ my $search_url = $hotbot_search_url . $words . "&first=$start&page=more";
+
+ my ($search_hit_count, @subpages) =
+ pick_from_search_engine ($timeout, $search_url, $words);
+
+ my @candidates = ();
+ foreach my $u (@subpages) {
+
+ # Hotbot plays redirection games too
+ # (not any more?)
+# next unless ($u =~ m@/director.asp\?.*\btarget=([^&]+)@);
+# $u = url_decode($1);
+
+ next unless ($u =~ m@^http://@i); # skip non-HTTP or relative URLs
+ next if ($u =~ m@[/.]hotbot\.com\b@i); # skip hotbot builtins
+ next if ($u =~ m@[/.]lycos\.com\b@i); # skip hotbot builtins
+ next if ($u =~ m@[/.]inktomi\.com\b@i); # skip hotbot builtins
+
+ LOG ($verbose_filter, " candidate: $u");
+ push @candidates, $u;
+ }
+
+ return pick_image_from_pages ($search_url, $search_hit_count, $#subpages+1,
+ $timeout, @candidates);
+}
- my $image_data = "";
- my $jpg_file_date;
- my $do_ims = 0;
- # The map file is the means by which we hold write-locks on the image
- # file. So first obtain the lock on that file.
- #
- local *MAP;
- open (MAP, "+<$map_file") || die "couldn't open $map_file: $!";
+\f
+############################################################################
+#
+# Pick images by feeding random words into Lycos
+#
+############################################################################
- if ($DEBUG > 2) { print STDERR "jpeg: opened $map_file\n"; }
- flock (MAP, LOCK_SH) || die "couldn't lock $map_file: $!";
- if ($DEBUG > 2) { print STDERR "jpeg: locked $map_file\n"; }
+my $lycos_search_url = "http://search.lycos.com/default.asp" .
+ "?lpv=1" .
+ "&loc=searchhp" .
+ "&tab=web" .
+ "&query=";
- # Now we have exclusive access to the image file. Read it.
- #
- local *IMG;
- open (IMG, "<$image_jpg") || die "couldn't open $image_jpg: $!";
-
- $jpg_file_date = (stat(IMG))[9];
-
- if (do_ifmod($jpg_file_date)) {
- $do_ims = 1;
- if ($DEBUG > 2) {
- my $ims = $ENV{HTTP_IF_MODIFIED_SINCE};
- $ims =~ s/;.*//;
- print STDERR "not-modified-since " .
- localtime(parse_http_time($ims)) . "\n";
- print STDERR "jpg date: " . localtime($jpg_file_date) . "\n";
- }
- }
+sub pick_from_lycos_text($) {
+ my ($timeout) = @_;
- if (!$do_ims) {
- while (<IMG>) { $image_data .= $_; }
- }
- close (IMG) || die "couldn't close $image_jpg: $!";
+ $last_search = $lycos_search_url; # for warnings
- # Now free the lock so that others can write to the file.
- #
- flock (MAP, LOCK_UN) || die "couldn't unlock $map_file: $!";
- close (MAP) || die "couldn't close $map_file: $!";
- if ($DEBUG > 2) { print STDERR "jpeg: closed $map_file\n"; }
+ # lycos seems to always give us back dictionaries and word lists if
+ # we search for more than one word...
+ #
+ my $words = random_word();
- return if ($do_ims);
+ my $start = int(rand(8)) * 10 + 1;
+ my $search_url = $lycos_search_url . $words . "&first=$start&page=more";
+ my ($search_hit_count, @subpages) =
+ pick_from_search_engine ($timeout, $search_url, $words);
- # At this point, we have the image data we will be returning.
- # However, don't return it yet -- first go off and generate the
- # *next* image, then we can return *this* one. If we don't do it
- # in this order, people will jump the gun hitting reload, and no
- # image updates will happen.
- #
- my $type = "image/jpeg";
- my $mod_time = $jpg_file_date;
- if ($script_date > $mod_time) { $mod_time = $script_date; }
-
- print "Last-Modified: " . format_http_time($mod_time) . "\n";
- print "Expires: " . format_http_time(compute_expires_time($mod_time))
- . "\n";
- print "Content-Type: $type\n";
- print "Content-Length: " . length($image_data) . "\n";
- print "\n";
-
- # Now, before returning the image data, go catatonic for a minute
- # while we load some URLs and make the next image.
- #
- cgi_generate_image;
+ my @candidates = ();
+ foreach my $u (@subpages) {
- # Done setting up for next time -- now finish loading.
- #
- print $image_data;
- $image_data = undef;
-}
+ # Lycos plays redirection games.
+ # (not any more?)
+# next unless ($u =~ m@^http://click.lycos.com/director.asp
+# .*
+# \btarget=([^&]+)
+# .*
+# @x);
+# $u = url_decode($1);
+ next unless ($u =~ m@^http://@i); # skip non-HTTP or relative URLs
+ next if ($u =~ m@[/.]hotbot\.com\b@i); # skip lycos builtins
+ next if ($u =~ m@[/.]lycos\.com\b@i); # skip lycos builtins
+ next if ($u =~ m@[/.]terralycos\.com\b@i); # skip lycos builtins
+ next if ($u =~ m@[/.]inktomi\.com\b@i); # skip lycos builtins
-# Write the source code of this script as a text/plain document.
-#
-sub cgi_emit_source_document {
- my $mod_time = $script_date;
- if (do_ifmod($mod_time)) {
- return;
- }
+ LOG ($verbose_filter, " candidate: $u");
+ push @candidates, $u;
+ }
- print "Content-Type: text/plain\n";
- print "Last-Modified: " . format_http_time($mod_time) . "\n";
- print "\n";
- open (IN, "<$argv0") || die "couldn't open $argv0: $!";
- while (<IN>) {
- print;
- }
- close (IN);
+ return pick_image_from_pages ($search_url, $search_hit_count, $#subpages+1,
+ $timeout, @candidates);
}
-# Parse the various environment variables to decide how we were invoked,
-# and then do something about it.
+\f
+############################################################################
+#
+# Pick images by feeding random words into news.yahoo.com
#
-sub cgi_main {
+############################################################################
- $DEBUG=4;
+my $yahoo_news_url = "http://news.search.yahoo.com/search/news" .
+ "?c=news_photos" .
+ "&p=";
- $ENV{PATH} .= ":/usr/local/bin";
+# yahoonews
+sub pick_from_yahoo_news_text($) {
+ my ($timeout) = @_;
- # make sure the various programs we execute exist, right up front.
- foreach ("ppmmake", "cjpeg", "djpeg", "giftopnm", "pnmpaste", "pnmscale") {
- if (!which ($_)) {
- print "Content-Type: text/html\n";
- print "\n\n<TITLE>Error</TITLE>$body_tag<H1>Error</H1>";
- print "The <TT>$_</TT> program was not found on \$PATH.<BR>\n";
+ $last_search = $yahoo_news_url; # for warnings
- my $p = $ENV{PATH};
- $p =~ s/%/%25/g; $p =~ s/\&/%26/g;
- $p =~ s/</%3C/g; $p =~ s/>/%3E/g;
- $p =~ s/:/:<WBR>/g;
- print "\$PATH is: <TT>$p</TT><P>\n";
- exit (0);
- }
- }
+ my $words = random_word();
+ my $search_url = $yahoo_news_url . $words;
- $script_date = (stat($argv0))[9];
-
- print "Blat: Foop\n";
-
- if ($ENV{REQUEST_METHOD} &&
- $ENV{REQUEST_METHOD} ne "GET" &&
- $ENV{REQUEST_METHOD} ne "HEAD" ) {
- print "Content-Type: text/html\n";
- print "\n\n<TITLE>Error</TITLE>$body_tag<H1>Error</H1>";
- $_ = $ENV{REQUEST_METHOD};
- print "bad request method: <TT>$_</TT>\n";
- exit (0);
-
- } elsif ( $ENV{QUERY_STRING} ) {
- if ( $ENV{QUERY_STRING} eq "reset" ) {
- cgi_reset_all_files;
-
- print "Content-Type: text/html\n";
- print "\n\n<TITLE>Collage Reset</TITLE>";
- print "$body_tag<H1>Collage Reset</H1><P>\n";
- exit (0);
-
- } else {
- print "Content-Type: text/html\n";
- print "\n\n<TITLE>Error</TITLE>$body_tag<H1>Error</H1>";
- $_ = $ENV{QUERY_STRING};
- print "malformed URL: <TT>$_</TT>\n";
- exit (0);
- }
+ my ($search_hit_count, @subpages) =
+ pick_from_search_engine ($timeout, $search_url, $words);
- } elsif ( !$ENV{PATH_INFO} || $ENV{PATH_INFO} eq "" ) {
- # don't allow /webcollage as a URL -- force it to be /webcollage/
- print "Status: 301 Moved Permanently\n";
- print "Location: http://" .
- ($ENV{HTTP_HOST} ? $ENV{HTTP_HOST} :
- $ENV{SERVER_NAME} ? $ENV{SERVER_NAME} : "???") .
- ($ENV{REQUEST_URI} ? $ENV{REQUEST_URI} : "") .
- "/\n\n";
- exit (0);
+ my @candidates = ();
+ foreach my $u (@subpages) {
- } elsif ( $ENV{PATH_INFO} eq "/" ) {
- cgi_emit_html_document;
+ # de-redirectize the URLs
+ $u =~ s@^http://rds\.yahoo\.com/.*-http%3A@http:@s;
- } elsif ( $ENV{PATH_INFO} =~ m@^/images/[^/]+\.jpg$@ ) {
- cgi_emit_jpeg_document;
+ # only accept URLs on Yahoo's news site
+ next unless ($u =~ m@^http://dailynews\.yahoo\.com/@i ||
+ $u =~ m@^http://story\.news\.yahoo\.com/@i);
+ next unless ($u =~ m@&u=/@);
- } elsif ( $ENV{PATH_INFO} eq "/webcollage.pl" ) {
- cgi_emit_source_document;
+ LOG ($verbose_filter, " candidate: $u");
+ push @candidates, $u;
+ }
- } else {
- print "Content-Type: text/html\n";
- print "\n\n<TITLE>Error</TITLE>$body_tag<H1>Error</H1>";
- $_ = $ENV{PATH_INFO};
- print "malformed URL: <TT>$_</TT>\n";
- exit (0);
- }
+ return pick_image_from_pages ($search_url, $search_hit_count, $#subpages+1,
+ $timeout, @candidates);
}
-##############################################################################
+\f
+############################################################################
#
-# Generating a list of urls only
+# Pick images from LiveJournal's list of recently-posted images.
#
-##############################################################################
+############################################################################
-sub url_only_output {
- $| = 1;
- do {
- my ($base, $img) = pick_image;
- if ($img) {
- $base =~ s/ /%20/g;
- $img =~ s/ /%20/g;
- print "$img $base\n";
- }
- } while (1);
-}
+my $livejournal_img_url = "http://www.livejournal.com/stats/latest-img.bml";
-##############################################################################
-#
-# Running as an xscreensaver module
-#
-##############################################################################
+# With most of our image sources, we get a random page and then select
+# from the images on it. However, in the case of LiveJournal, the page
+# of images tends to update slowly; so we'll remember the last N entries
+# on it and randomly select from those, to get a wider variety each time.
-my $image_tmp2;
-my $image_tmp3;
+my $lj_cache_size = 1000;
+my @lj_cache = (); # fifo, for ordering by age
+my %lj_cache = (); # hash, for detecting dups
-sub x_cleanup {
- if ($DEBUG > 0) { print STDERR "caught signal\n"; }
- unlink $image_ppm, $image_tmp, $image_tmp2, $image_tmp3;
- exit 1;
-}
+# livejournal
+sub pick_from_livejournal_images($) {
+ my ($timeout) = @_;
+ $last_search = $livejournal_img_url; # for warnings
-sub x_output {
+ my ( $base, $body ) = get_document ($livejournal_img_url, undef, $timeout);
+ return () unless $body;
- my $win_cmd = $ppm_to_root_window_cmd;
- $win_cmd =~ s/^([^ \t\r\n]+).*$/$1/;
+ $body =~ s/\n/ /gs;
+ $body =~ s/(<recent-image)\b/\n$1/gsi;
- # make sure the various programs we execute exist, right up front.
- foreach ("ppmmake", "giftopnm", "djpeg", "pnmpaste", "pnmscale",
- $win_cmd) {
- which ($_) || die "$progname: $_ not found on \$PATH.\n";
- }
+ foreach (split (/\n/, $body)) {
+ next unless (m/^<recent-image\b/);
+ next unless (m/\bIMG=[\'\"]([^\'\"]+)[\'\"]/si);
+ my $img = html_unquote ($1);
- $SIG{HUP} = \&x_cleanup;
- $SIG{INT} = \&x_cleanup;
- $SIG{QUIT} = \&x_cleanup;
- $SIG{ABRT} = \&x_cleanup;
- $SIG{KILL} = \&x_cleanup;
- $SIG{TERM} = \&x_cleanup;
-
- # Need this so that if giftopnm dies, we don't die.
- $SIG{PIPE} = 'IGNORE';
-
- if (!$img_width || !$img_height) {
- $_ = "xdpyinfo";
- which ($_) || die "$progname: $_ not found on \$PATH.\n";
- $_ = `$_`;
- ($img_width, $img_height) = m/dimensions: *([0-9]+)x([0-9]+) /;
+ next if ($lj_cache{$img}); # already have it
+
+ next unless (m/\bURL=[\'\"]([^\'\"]+)[\'\"]/si);
+ my $page = html_unquote ($1);
+ my @pair = ($img, $page);
+ LOG ($verbose_filter, " candidate: $img");
+ push @lj_cache, \@pair;
+ $lj_cache{$img} = \@pair;
+ }
+
+ return () if ($#lj_cache == -1);
+
+ my $n = $#lj_cache+1;
+ my $i = int(rand($n));
+ my ($img, $page) = @{$lj_cache[$i]};
+
+ # delete this one from @lj_cache and from %lj_cache.
+ #
+ @lj_cache = ( @lj_cache[0 .. $i-1],
+ @lj_cache[$i+1 .. $#lj_cache] );
+ delete $lj_cache{$img};
+
+ # Keep the size of the cache under the limit by nuking older entries
+ #
+ while ($#lj_cache >= $lj_cache_size) {
+ my $pairP = shift @lj_cache;
+ my $img = $pairP->[0];
+ delete $lj_cache{$img};
+ }
+
+ LOG ($verbose_load, "picked image " .($i+1) . "/$n: $img");
+
+ return ($page, $img);
+}
+
+\f
+############################################################################
+#
+# Pick images from ircimages.com (images that have been in the /topic of
+# various IRC channels.)
+#
+############################################################################
+
+my $ircimages_url = "http://ircimages.com/";
+
+# ircimages
+sub pick_from_ircimages($) {
+ my ($timeout) = @_;
+
+ $last_search = $ircimages_url; # for warnings
+
+ my $n = int(rand(2900));
+ my $search_url = $ircimages_url . "page-$n";
+
+ my ( $base, $body ) = get_document ($search_url, undef, $timeout);
+ return () unless $body;
+
+ my @candidates = ();
+
+ $body =~ s/\n/ /gs;
+ $body =~ s/(<A)\b/\n$1/gsi;
+
+ foreach (split (/\n/, $body)) {
+
+ my ($u) = m@<A\s.*\bHREF\s*=\s*([^>]+)>@i;
+ next unless $u;
+
+ if ($u =~ m/^\"([^\"]*)\"/) { $u = $1; } # quoted string
+ elsif ($u =~ m/^([^\s]*)\s/) { $u = $1; } # or token
+
+ next unless ($u =~ m/^http:/i);
+ next if ($u =~ m@^http://(searchirc\.com\|ircimages\.com)@i);
+ next unless ($u =~ m@[.](gif|jpg|jpeg|pjpg|pjpeg|png)$@i);
+
+ LOG ($verbose_http, " HREF: $u");
+ push @candidates, $u;
+ }
+
+ LOG ($verbose_filter, "" . $#candidates+1 . " links on $search_url");
+
+ return () if ($#candidates == -1);
+
+ my $i = int(rand($#candidates+1));
+ my $img = $candidates[$i];
+
+ LOG ($verbose_load, "picked image " .($i+1) . "/" . ($#candidates+1) .
+ ": $img");
+
+ $search_url = $img; # hmm...
+ return ($search_url, $img);
+}
+
+\f
+############################################################################
+#
+# Pick images from Twitpic's list of recently-posted images.
+#
+############################################################################
+
+my $twitpic_img_url = "http://twitpic.com/public_timeline/feed.rss";
+
+# With most of our image sources, we get a random page and then select
+# from the images on it. However, in the case of Twitpic, the page
+# of images tends to update slowly; so we'll remember the last N entries
+# on it and randomly select from those, to get a wider variety each time.
+
+my $twitpic_cache_size = 1000;
+my @twitpic_cache = (); # fifo, for ordering by age
+my %twitpic_cache = (); # hash, for detecting dups
+
+# twitpic
+sub pick_from_twitpic_images($) {
+ my ($timeout) = @_;
+
+ $last_search = $twitpic_img_url; # for warnings
+
+ my ( $base, $body ) = get_document ($twitpic_img_url, undef, $timeout);
+
+ # Update the cache.
+
+ if ($body) {
+ $body =~ s/\n/ /gs;
+ $body =~ s/(<item)\b/\n$1/gsi;
+
+ my @items = split (/\n/, $body);
+ shift @items;
+ foreach (@items) {
+ next unless (m@<link>([^<>]*)</link>@si);
+ my $page = html_unquote ($1);
+
+ $page =~ s@/$@@s;
+ $page .= '/full';
+
+ next if ($twitpic_cache{$page}); # already have it
+
+ LOG ($verbose_filter, " candidate: $page");
+ push @twitpic_cache, $page;
+ $twitpic_cache{$page} = $page;
}
+ }
- my $bgcolor = "#000000";
- my $bgimage = undef;
-
- if ($background) {
- if ($background =~ m/^\#[0-9a-f]+$/i) {
- $bgcolor = $background;
- } elsif (-r $background) {
- $bgimage = $background;
-
- } elsif (! $background =~ m@^[-a-z0-9 ]+$@i) {
- print STDERR "not a color or readable file: $background\n";
- exit 1;
- } else {
- # default to assuming it's a color
- $bgcolor = $background;
- }
+ # Pull from the cache.
+
+ return () if ($#twitpic_cache == -1);
+
+ my $n = $#twitpic_cache+1;
+ my $i = int(rand($n));
+ my $page = $twitpic_cache[$i];
+
+ # delete this one from @twitpic_cache and from %twitpic_cache.
+ #
+ @twitpic_cache = ( @twitpic_cache[0 .. $i-1],
+ @twitpic_cache[$i+1 .. $#twitpic_cache] );
+ delete $twitpic_cache{$page};
+
+ # Keep the size of the cache under the limit by nuking older entries
+ #
+ while ($#twitpic_cache >= $twitpic_cache_size) {
+ my $page = shift @twitpic_cache;
+ delete $twitpic_cache{$page};
+ }
+
+ ( $base, $body ) = get_document ($page, undef, $timeout);
+ my $img = undef;
+ $body = '' unless defined($body);
+
+ foreach (split (/<img\s+/, $body)) {
+ my ($src) = m/\bsrc=[\"\'](.*?)[\"\']/si;
+ next unless $src;
+ next if m@/js/@s;
+ next if m@/images/@s;
+
+ $img = $src;
+
+ $img = "http:$img" if ($img =~ m@^//@s); # Oh come on
+
+ # Sometimes these images are hosted on twitpic, sometimes on Amazon.
+ if ($img =~ m@^/@) {
+ $base =~ s@^(https?://[^/]+)/.*@$1@s;
+ $img = $base . $img;
}
+ last;
+ }
- # Create the sold-colored base image.
- #
- $_ = "ppmmake '$bgcolor' $img_width $img_height";
- if ($DEBUG > 1) {
- print STDERR "creating base image: $_\n";
+ if (!$img) {
+ LOG ($verbose_load, "no matching images on $page\n");
+ return ();
+ }
+
+ LOG ($verbose_load, "picked image " .($i+1) . "/$n: $img");
+
+ return ($page, $img);
+}
+
+\f
+############################################################################
+#
+# Pick images from Twitter's list of recently-posted updates.
+#
+############################################################################
+
+# With most of our image sources, we get a random page and then select
+# from the images on it. However, in the case of Twitter, the page
+# of images only updates once a minute; so we'll remember the last N entries
+# on it and randomly select from those, to get a wider variety each time.
+
+my $twitter_img_url = "http://api.twitter.com/1/statuses/" .
+ "public_timeline.json" .
+ "?include_entities=true" .
+ "&include_rts=true" .
+ "&count=200";
+
+my $twitter_cache_size = 1000;
+
+my @twitter_cache = (); # fifo, for ordering by age
+my %twitter_cache = (); # hash, for detecting dups
+
+
+# twitter
+sub pick_from_twitter_images($) {
+ my ($timeout) = @_;
+
+ $last_search = $twitter_img_url; # for warnings
+
+ my ( $base, $body ) = get_document ($twitter_img_url, undef, $timeout);
+ # Update the cache.
+
+ if ($body) {
+ $body =~ s/[\r\n]+/ /gs;
+
+ # Parsing JSON is a pain in the ass. So we halfass it as usual.
+ $body =~ s/^\[|\]$//s;
+ $body =~ s/(\[.*?\])/{ $_ = $1; s@\},@\} @gs; $_; }/gsexi;
+ my @items = split (/},{/, $body);
+ foreach (@items) {
+ my ($name) = m@"screen_name":"([^\"]+)"@si;
+ my ($img) = m@"media_url":"([^\"]+)"@si;
+ my ($page) = m@"display_url":"([^\"]+)"@si;
+ next unless ($name && $img && $page);
+ foreach ($img, $page) {
+ s/\\//gs;
+ $_ = "http://$_" unless (m/^http/si);
+ }
+
+ next if ($twitter_cache{$page}); # already have it
+
+ LOG ($verbose_filter, " candidate: $page - $img");
+ push @twitter_cache, $page;
+ $twitter_cache{$page} = $img;
}
- system "$_ > $image_ppm";
+ }
- # Paste the default background image in the middle of it.
- #
- if ($bgimage) {
- my ($iw, $ih);
- if (open(IMG, "<$bgimage")) {
- $_ = <IMG>;
- $_ = <IMG>;
- ($iw, $ih) = m/^([0-9]+) ([0-9]+)$/;
- close (IMG);
- }
- my $x = int (($img_width - $iw) / 2);
- my $y = int (($img_height - $ih) / 2);
- if ($DEBUG > 1) {
- print STDERR "pasting $bgimage into base image at $x, $y\n";
- }
- system "pnmpaste $bgimage $x $y $image_ppm > $image_tmp2" .
- " && mv $image_tmp2 $image_ppm";
+ # Pull from the cache.
+
+ return () if ($#twitter_cache == -1);
+
+ my $n = $#twitter_cache+1;
+ my $i = int(rand($n));
+ my $page = $twitter_cache[$i];
+ my $url = $twitter_cache{$page};
+
+ # delete this one from @twitter_cache and from %twitter_cache.
+ #
+ @twitter_cache = ( @twitter_cache[0 .. $i-1],
+ @twitter_cache[$i+1 .. $#twitter_cache] );
+ delete $twitter_cache{$page};
+
+ # Keep the size of the cache under the limit by nuking older entries
+ #
+ while ($#twitter_cache >= $twitter_cache_size) {
+ my $page = shift @twitter_cache;
+ delete $twitter_cache{$page};
+ }
+
+ LOG ($verbose_load, "picked page $url");
+
+ $suppress_audit = 1;
+
+ return ($page, $url);
+}
+
+\f
+############################################################################
+#
+# Pick images from Flickr's page of recently-posted photos.
+#
+############################################################################
+
+my $flickr_img_url = "http://www.flickr.com/explore/";
+
+# Like LiveJournal, the Flickr page of images tends to update slowly,
+# so remember the last N entries on it and randomly select from those.
+
+# I know that Flickr has an API (http://www.flickr.com/services/api/)
+# but it was easy enough to scrape the HTML, so I didn't bother exploring.
+
+my $flickr_cache_size = 1000;
+my @flickr_cache = (); # fifo, for ordering by age
+my %flickr_cache = (); # hash, for detecting dups
+
+
+# flickr_recent
+sub pick_from_flickr_recent($) {
+ my ($timeout) = @_;
+
+ my $start = 16 * int(rand(100));
+
+ $last_search = $flickr_img_url; # for warnings
+ $last_search .= "?start=$start" if ($start > 0);
+
+ my ( $base, $body ) = get_document ($last_search, undef, $timeout);
+ return () unless $body;
+
+ $body =~ s/[\r\n]/ /gs;
+ $body =~ s/(<a)\b/\n$1/gsi;
+
+ my $count = 0;
+ my $count2 = 0;
+ foreach (split (/\n/, $body)) {
+
+ my ($page, $thumb) = m@<A \s [^<>]* \b HREF=\"([^<>\"]+)\" [^<>]* > \s*
+ <IMG \s [^<>]* \b
+ data-defer-src = \"([^<>\"]+)\" @xsi;
+ next unless defined ($thumb);
+ $page = html_unquote ($page);
+ $thumb = html_unquote ($thumb);
+
+ next unless ($thumb =~ m@^http://farm\d*\.static\.?flickr\.com/@);
+
+ my $base = "http://www.flickr.com/";
+ $page =~ s@^/@$base@;
+ $thumb =~ s@^/@$base@;
+
+ my $img = $thumb;
+ $img =~ s/_[a-z](\.[a-z\d]+)$/$1/si; # take off "thumb" suffix
+
+ $count++;
+ next if ($flickr_cache{$img}); # already have it
+
+ my @pair = ($img, $page, $start);
+ LOG ($verbose_filter, " candidate: $img");
+ push @flickr_cache, \@pair;
+ $flickr_cache{$img} = \@pair;
+ $count2++;
+ }
+
+ return () if ($#flickr_cache == -1);
+
+ my $n = $#flickr_cache+1;
+ my $i = int(rand($n));
+ my ($img, $page) = @{$flickr_cache[$i]};
+
+ # delete this one from @flickr_cache and from %flickr_cache.
+ #
+ @flickr_cache = ( @flickr_cache[0 .. $i-1],
+ @flickr_cache[$i+1 .. $#flickr_cache] );
+ delete $flickr_cache{$img};
+
+ # Keep the size of the cache under the limit by nuking older entries
+ #
+ while ($#flickr_cache >= $flickr_cache_size) {
+ my $pairP = shift @flickr_cache;
+ my $img = $pairP->[0];
+ delete $flickr_cache{$img};
+ }
+
+ LOG ($verbose_load, "picked image " .($i+1) . "/$n: $img");
+
+ return ($page, $img);
+}
+
+\f
+############################################################################
+#
+# Pick images from a random RSS feed on Flickr.
+#
+############################################################################
+
+my $flickr_rss_base = ("http://www.flickr.com/services/feeds/photos_public.gne".
+ "?format=rss_200_enc&tagmode=any&tags=");
+
+# Picks a random RSS feed; picks a random image from that feed;
+# returns 2 URLs: the page containing the image, and the image.
+# Mostly by Joe Mcmahon <mcmahon@yahoo-inc.com>
+#
+# flickr_random
+sub pick_from_flickr_random($) {
+ my $timeout = shift;
+
+ my $words = random_words(',');
+ my $rss = $flickr_rss_base . $words;
+ $last_search = $rss;
+
+ $_ = $words;
+ s/,/ /g;
+
+ print STDERR "\n\n" if ($verbose_load);
+ LOG ($verbose_load, "words: $_");
+ LOG ($verbose_load, "URL: $last_search");
+
+ $suppress_audit = 1;
+
+ my ( $base, $body ) = get_document ($last_search, undef, $timeout);
+ if (!$base || !$body) {
+ $body = undef;
+ return;
+ }
+
+ my $img;
+ ($base, $img) = pick_image_from_rss ($base, $body);
+ $body = undef;
+ return () unless defined ($img);
+
+ LOG ($verbose_load, "redirected to: $base");
+ return ($base, $img);
+}
+
+\f
+############################################################################
+#
+# Pick random images from Instagram, via gramfeed.com's key.
+#
+############################################################################
+
+my $instagram_url_base = "https://api.instagram.com/v1/media/popular" .
+ "?client_id=b59fbe4563944b6c88cced13495c0f49";
+
+# instagram_random
+sub pick_from_instagram($) {
+ my $timeout = shift;
+
+ $last_search = $instagram_url_base;
+
+ print STDERR "\n\n" if ($verbose_load);
+ LOG ($verbose_load, "URL: $last_search");
+
+ my ( $base, $body ) = get_document ($last_search, undef, $timeout);
+ if (!$base || !$body) {
+ $body = undef;
+ return;
+ }
+
+ $body =~ s/("link")/\001$1/gs;
+ my @chunks = split(/\001/, $body);
+ shift @chunks;
+ my @urls = ();
+ foreach (@chunks) {
+ s/\\//gs;
+ my ($url) = m/"link":\s*"(.*?)"/s;
+ my ($img) = m/"standard_resolution":{"url":\s*"(.*?)"/s;
+ ($img) = m/"url":\s*"(.*?)"/s unless $url;
+ next unless ($url && $img);
+ push @urls, [ $url, $img ];
+ }
+
+ if ($#urls < 0) {
+ LOG ($verbose_load, "no images on $last_search");
+ return ();
+ }
+
+ my $i = int(rand($#urls+1));
+ my ($url, $img) = @{$urls[$i]};
+
+ LOG ($verbose_load, "picked image " .($i+1) . "/" . ($#urls+1) . ": $url");
+ return ($url, $img);
+}
+
+\f
+############################################################################
+#
+# Pick images by waiting for driftnet to populate a temp dir with files.
+# Requires driftnet version 0.1.5 or later.
+# (Driftnet is a program by Chris Lightfoot that sniffs your local ethernet
+# for images being downloaded by others.)
+# Driftnet/webcollage integration by jwz.
+#
+############################################################################
+
+# driftnet
+sub pick_from_driftnet($) {
+ my ($timeout) = @_;
+
+ my $id = $driftnet_magic;
+ my $dir = $driftnet_dir;
+ my $start = time;
+ my $now;
+
+ error ("\$driftnet_dir unset?") unless ($dir);
+ $dir =~ s@/+$@@;
+
+ error ("$dir unreadable") unless (-d "$dir/.");
+
+ $timeout = $http_timeout unless ($timeout);
+ $last_search = $id;
+
+ while ($now = time, $now < $start + $timeout) {
+ opendir (my $dir, $dir) || error ("$dir: $!");
+ while (my $file = readdir($dir)) {
+ next if ($file =~ m/^\./);
+ $file = "$dir/$file";
+ closedir ($dir);
+ LOG ($verbose_load, "picked file $file ($id)");
+ return ($id, $file);
}
+ closedir ($dir);
+ }
+ LOG (($verbose_net || $verbose_load), "timed out for $id");
+ return ();
+}
- do {
- my ($base, $img) = pick_image;
+sub get_driftnet_file($) {
+ my ($file) = @_;
- my ($headers, $body);
- if ($img) {
- ($headers, $body) = get_document ($img, $base);
- }
+ error ("\$driftnet_dir unset?") unless ($driftnet_dir);
- if ($body) {
-
- if ($DEBUG > 0) {
- print STDERR "got $img (" . length($body) . ")\n";
- }
-
- my $cmd;
- if ($img =~ m/\.gif/i) {
- $cmd = "giftopnm";
- } else {
- $cmd = "djpeg";
- }
-
- if ($DEBUG == 0) {
- $cmd .= " 2>/dev/null";
- }
-
- if (open(PIPE, "| $cmd > $image_tmp")) {
- print PIPE $body;
- close PIPE;
-
- if ($DEBUG > 1) {
- print STDERR "created $image_tmp ($cmd)\n";
- }
- }
-
- if (-s $image_tmp) {
-
- if ($filter_cmd) {
- if ($DEBUG > 1) {
- print STDERR "running $filter_cmd\n";
- }
- system "($filter_cmd) < $image_tmp > $image_tmp3" .
- " && mv $image_tmp3 $image_tmp";
- }
-
- my ($iw, $ih);
- if (open(IMG, "<$image_tmp")) {
- $_ = <IMG>;
- $_ = <IMG>;
- ($iw, $ih) = m/^([0-9]+) ([0-9]+)$/;
- close (IMG);
- }
-
- if ($iw && $ih) {
-
- if ($DEBUG > 1) {
- print STDERR "image size is $iw x $ih\n";
- }
-
- if ($iw > $img_width || $ih > $img_height) {
- while ($iw > $img_width ||
- $ih > $img_height) {
- $iw = int($iw / 2);
- $ih = int($ih / 2);
- }
- if ($DEBUG > 1) {
- print STDERR "scaling to $iw x $ih\n";
- }
- system "pnmscale -xysize $iw $ih $image_tmp" .
- " > $image_tmp2" .
- " 2>/dev/null && mv $image_tmp2 $image_tmp";
- }
-
- my $x = int (rand() * ($img_width - $iw));
- my $y = int (rand() * ($img_height - $ih));
-
- if ($DEBUG > 1) {
- print STDERR "pasting at $x, $y in $image_ppm\n";
- }
-
- system "pnmpaste $image_tmp $x $y $image_ppm" .
- " > $image_tmp2" .
- " && mv $image_tmp2 $image_ppm";
-
-
- my $target = $image_ppm;
- if ($post_filter_cmd) {
- if ($DEBUG > 1) {
- print STDERR "running $post_filter_cmd\n";
- }
- system "($post_filter_cmd) < $image_ppm > $image_tmp3";
- $target = $image_tmp3;
- }
-
- if (!$no_output_p) {
-
- my $tsize = (stat($target))[7];
- if ($tsize > 200) {
- $_ = $ppm_to_root_window_cmd;
- s/%%PPM%%/$target/;
-
- if ($DEBUG > 1) {
- print STDERR "running $_\n";
- }
- system $_;
-
- } elsif ($DEBUG > 1) {
- print STDERR "$target size is $tsize\n";
- }
- }
- }
- }
- unlink $image_tmp, $image_tmp2, $image_tmp3;
- }
+ my $id = $driftnet_magic;
+ error ("$id: $file not in $driftnet_dir?")
+ unless ($file =~ m@^\Q$driftnet_dir@o);
+
+ open (my $in, '<', $file) || error ("$id: $file: $!");
+ my $body = '';
+ local $/ = undef; # read entire file
+ $body = <$in>;
+ close ($in) || error ("$id: $file: $!");
+ unlink ($file) || error ("$id: $file: rm: $!");
+ return ($id, $body);
+}
- sleep $delay;
- } while (1);
+sub spawn_driftnet($) {
+ my ($cmd) = @_;
+
+ # make a directory to use.
+ while (1) {
+ my $tmp = $ENV{TEMPDIR} || "/tmp";
+ $driftnet_dir = sprintf ("$tmp/driftcollage-%08x", rand(0xffffffff));
+ LOG ($verbose_exec, "mkdir $driftnet_dir");
+ last if mkdir ($driftnet_dir, 0700);
+ }
+
+ if (! ($cmd =~ m/\s/)) {
+ # if the command didn't have any arguments in it, then it must be just
+ # a pointer to the executable. Append the default args to it.
+ my $dargs = $default_driftnet_cmd;
+ $dargs =~ s/^[^\s]+//;
+ $cmd .= $dargs;
+ }
+
+ # point the driftnet command at our newly-minted private directory.
+ #
+ $cmd .= " -d $driftnet_dir";
+ $cmd .= ">/dev/null" unless ($verbose_exec);
+
+ my $pid = fork();
+ if ($pid < 0) { error ("fork: $!\n"); }
+ if ($pid) {
+ # parent fork
+ push @pids_to_kill, $pid;
+ LOG ($verbose_exec, "forked for \"$cmd\"");
+ } else {
+ # child fork
+ nontrapping_system ($cmd) || error ("exec: $!");
+ }
+
+ # wait a bit, then make sure the process actually started up.
+ #
+ sleep (1);
+ error ("pid $pid failed to start \"$cmd\"")
+ unless (1 == kill (0, $pid));
}
+# local-directory
+sub pick_from_local_dir($) {
+ my ($timeout) = @_;
-sub x_main {
+ my $id = $local_magic;
+ $last_search = $id;
- # Unlike CGI, when running in X mode, the various tmp files should be
- # in the /tmp directory and should have gensymed names.
- #
- $image_ppm = ($ENV{TMPDIR} ? $ENV{TMPDIR} : "/tmp") . "/webcollage." . $$;
- $image_tmp = $image_ppm . "-1";
- $image_tmp2 = $image_ppm . "-2";
- $image_tmp3 = $image_ppm . "-3";
+ my $dir = $local_dir;
+ error ("\$local_dir unset?") unless ($dir);
+ $dir =~ s@/+$@@;
- # In X mode, these aren't used. Set them to undef to error if we try.
- #
- $data_dir = undef;
- $image_jpg = undef;
- $pending_file = undef;
- $map_file = undef;
- $url_generation_time = undef;
- $image_retrieval_time = undef;
- $max_map_entries = undef;
- $pastes_per_load = undef;
- $max_age = undef;
- $script_date = undef;
- @all_files = undef;
-
- # In X mode, these come either from the command line, or from the X server.
- $img_width = undef;
- $img_height = undef;
-
-
- my $root_p = 0;
-
- while ($_ = $ARGV[0]) {
- shift @ARGV;
- if ($_ eq "-display" ||
- $_ eq "-displ" ||
- $_ eq "-disp" ||
- $_ eq "-dis" ||
- $_ eq "-dpy" ||
- $_ eq "-d") {
- $ENV{DISPLAY} = shift @ARGV;
- } elsif ($_ eq "-root") {
- $root_p = 1;
- } elsif ($_ eq "-no-output") {
- $no_output_p = 1;
- } elsif ($_ eq "-urls-only") {
- $urls_only_p = 1;
- $no_output_p = 1;
- } elsif ($_ eq "-verbose") {
- $DEBUG++;
- } elsif (m/^-v+$/) {
- $DEBUG += length($_)-1;
- } elsif ($_ eq "-delay") {
- $delay = shift @ARGV;
- } elsif ($_ eq "-timeout") {
- $http_timeout = shift @ARGV;
- } elsif ($_ eq "-filter") {
- $filter_cmd = shift @ARGV;
- } elsif ($_ eq "-filter2") {
- $post_filter_cmd = shift @ARGV;
- } elsif ($_ eq "-background" || $_ eq "-bg") {
- $background = shift @ARGV;
- } elsif ($_ eq "-size") {
- $_ = shift @ARGV;
- if (m@^([0-9]+)x([0-9]+)$@) {
- $img_width = $1;
- $img_height = $2;
- } else {
- die "$progname: argument to \"-size\" must be" .
- " of the form \"640x400\"\n";
- }
- } else {
- die "$copyright\nusage: $progname [-root]" .
- " [-display dpy] [-root] [-verbose] [-timeout secs]\n" .
- "\t\t [-delay secs] [-filter cmd] [-filter2 cmd]\n";
- }
+ error ("$dir unreadable") unless (-d "$dir/.");
+
+ my $v = ($verbose_exec ? "-v" : "");
+ my $pick = `xscreensaver-getimage-file $v "$dir"`;
+ $pick =~ s/\s+$//s;
+ $pick = "$dir/$pick" unless ($pick =~ m@^/@s); # relative path
+
+ LOG ($verbose_load, "picked file $pick ($id)");
+ return ($id, $pick);
+}
+
+
+sub get_local_file($) {
+ my ($file) = @_;
+
+ error ("\$local_dir unset?") unless ($local_dir);
+
+ my $id = $local_magic;
+ error ("$id: $file not in $local_dir?")
+ unless ($file =~ m@^\Q$local_dir@o);
+
+ open (my $in, '<', $file) || error ("$id: $file: $!");
+ local $/ = undef; # read entire file
+ my $body = <$in>;
+ close ($in) || error ("$id: $file: $!");
+ return ($id, $body);
+}
+
+
+\f
+############################################################################
+#
+# Pick a random image in a random way
+#
+############################################################################
+
+
+# Picks a random image on a random page, and returns two URLs:
+# the page containing the image, and the image.
+# Returns () if nothing found this time.
+#
+
+sub pick_image(;$) {
+ my ($timeout) = @_;
+
+ $current_state = "select";
+ $load_method = "none";
+
+ my $n = int(rand(100));
+ my $fn = undef;
+ my $total = 0;
+ my @rest = @search_methods;
+
+ while (@rest) {
+ my $pct = shift @rest;
+ my $name = shift @rest;
+ my $tfn = shift @rest;
+ $total += $pct;
+ if ($total > $n && !defined($fn)) {
+ $fn = $tfn;
+ $current_state = $name;
+ $load_method = $current_state;
+ }
+ }
+
+ if ($total != 100) {
+ error ("internal error: \@search_methods totals to $total%!");
+ }
+
+ record_attempt ($current_state);
+ return $fn->($timeout);
+}
+
+
+\f
+############################################################################
+#
+# Statistics and logging
+#
+############################################################################
+
+sub timestr() {
+ return strftime ("%H:%M:%S: ", localtime);
+}
+
+sub blurb() {
+ return "$progname: " . timestr() . "$current_state: ";
+}
+
+sub error($) {
+ my ($err) = @_;
+ print STDERR blurb() . "$err\n";
+ exit 1;
+}
+
+sub stacktrace() {
+ my $i = 1;
+ print STDERR "$progname: stack trace:\n";
+ while (1) {
+ my ($package, $filename, $line, $subroutine) = caller($i++);
+ last unless defined($package);
+ $filename =~ s@^.*/@@;
+ print STDERR " $filename#$line, $subroutine\n";
+ }
+}
+
+
+my $lastlog = "";
+
+sub clearlog() {
+ $lastlog = "";
+}
+
+sub showlog() {
+ my $head = "$progname: DEBUG: ";
+ foreach (split (/\n/, $lastlog)) {
+ print STDERR "$head$_\n";
+ }
+ $lastlog = "";
+}
+
+sub LOG($$) {
+ my ($print, $msg) = @_;
+ my $blurb = timestr() . "$current_state: ";
+ $lastlog .= "$blurb$msg\n";
+ print STDERR "$progname: $blurb$msg\n" if $print;
+}
+
+
+my %stats_attempts;
+my %stats_successes;
+my %stats_elapsed;
+
+my $last_state = undef;
+sub record_attempt($) {
+ my ($name) = @_;
+
+ if ($last_state) {
+ record_failure($last_state) unless ($image_succeeded > 0);
+ }
+ $last_state = $name;
+
+ clearlog();
+ report_performance();
+
+ start_timer($name);
+ $image_succeeded = 0;
+ $suppress_audit = 0;
+}
+
+sub record_success($$$) {
+ my ($name, $url, $base) = @_;
+ if (defined($stats_successes{$name})) {
+ $stats_successes{$name}++;
+ } else {
+ $stats_successes{$name} = 1;
+ }
+
+ stop_timer ($name, 1);
+ my $o = $current_state;
+ $current_state = $name;
+ save_recent_url ($url, $base);
+ $current_state = $o;
+ $image_succeeded = 1;
+ clearlog();
+}
+
+
+sub record_failure($) {
+ my ($name) = @_;
+
+ return if $image_succeeded;
+
+ stop_timer ($name, 0);
+ if ($verbose_load && !$verbose_exec) {
+
+ if ($suppress_audit) {
+ print STDERR "$progname: " . timestr() . "(audit log suppressed)\n";
+ return;
}
- if (!$root_p && !$no_output_p) {
- die "$copyright" .
- "$progname: the -root argument is manditory (for now.)\n";
+ my $o = $current_state;
+ $current_state = "DEBUG";
+
+ my $line = "#" x 78;
+ print STDERR "\n\n\n";
+ print STDERR ("#" x 78) . "\n";
+ print STDERR blurb() . "failed to get an image. Full audit log:\n";
+ print STDERR "\n";
+ showlog();
+ print STDERR ("-" x 78) . "\n";
+ print STDERR "\n\n";
+
+ $current_state = $o;
+ }
+ $image_succeeded = 0;
+}
+
+
+
+sub stats_of($) {
+ my ($name) = @_;
+ my $i = $stats_successes{$name};
+ my $j = $stats_attempts{$name};
+ $i = 0 unless $i;
+ $j = 0 unless $j;
+ return "" . ($j ? int($i * 100 / $j) : "0") . "%";
+}
+
+
+my $current_start_time = 0;
+
+sub start_timer($) {
+ my ($name) = @_;
+ $current_start_time = time;
+
+ if (defined($stats_attempts{$name})) {
+ $stats_attempts{$name}++;
+ } else {
+ $stats_attempts{$name} = 1;
+ }
+ if (!defined($stats_elapsed{$name})) {
+ $stats_elapsed{$name} = 0;
+ }
+}
+
+sub stop_timer($$) {
+ my ($name, $success) = @_;
+ $stats_elapsed{$name} += time - $current_start_time;
+}
+
+
+my $last_report_time = 0;
+sub report_performance() {
+
+ return unless $verbose_warnings;
+
+ my $now = time;
+ return unless ($now >= $last_report_time + $report_performance_interval);
+ my $ot = $last_report_time;
+ $last_report_time = $now;
+
+ return if ($ot == 0);
+
+ my $blurb = "$progname: " . timestr();
+
+ print STDERR "\n";
+ print STDERR "${blurb}Current standings:\n";
+
+ foreach my $name (sort keys (%stats_attempts)) {
+ my $try = $stats_attempts{$name};
+ my $suc = $stats_successes{$name} || 0;
+ my $pct = int($suc * 100 / $try);
+ my $secs = $stats_elapsed{$name};
+ my $secs_link = $secs / $try;
+ print STDERR sprintf ("$blurb %-14s %4s (%d/%d);" .
+ " \t %.1f secs/link\n",
+ "$name:", "$pct%", $suc, $try, $secs_link);
+ }
+}
+
+
+
+my $max_recent_images = 400;
+my $max_recent_sites = 20;
+my @recent_images = ();
+my @recent_sites = ();
+
+sub save_recent_url($$) {
+ my ($url, $base) = @_;
+
+ return unless ($verbose_warnings);
+
+ $_ = $url;
+ my ($site) = m@^http://([^ \t\n\r/:]+)@;
+ return unless defined ($site);
+
+ if ($base eq $driftnet_magic || $base eq $local_magic) {
+ $site = $base;
+ @recent_images = ();
+ }
+
+ my $done = 0;
+ foreach (@recent_images) {
+ if ($_ eq $url) {
+ print STDERR blurb() . "WARNING: recently-duplicated image: $url" .
+ " (on $base via $last_search)\n";
+ $done = 1;
+ last;
}
+ }
+
+ # suppress "duplicate site" warning via %warningless_sites.
+ #
+ if ($warningless_sites{$site}) {
+ $done = 1;
+ } elsif ($site =~ m@([^.]+\.[^.]+\.[^.]+)$@ &&
+ $warningless_sites{$1}) {
+ $done = 1;
+ } elsif ($site =~ m@([^.]+\.[^.]+)$@ &&
+ $warningless_sites{$1}) {
+ $done = 1;
+ }
+
+ if (!$done) {
+ foreach (@recent_sites) {
+ if ($_ eq $site) {
+ print STDERR blurb() . "WARNING: recently-duplicated site: $site" .
+ " ($url on $base via $last_search)\n";
+ last;
+ }
+ }
+ }
+
+ push @recent_images, $url;
+ push @recent_sites, $site;
+ shift @recent_images if ($#recent_images >= $max_recent_images);
+ shift @recent_sites if ($#recent_sites >= $max_recent_sites);
+}
+
+
+\f
+##############################################################################
+#
+# other utilities
+#
+##############################################################################
+
+# Does %-decoding.
+#
+sub url_decode($) {
+ ($_) = @_;
+ tr/+/ /;
+ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C", hex($1))/eg;
+ return $_;
+}
+
+
+# Given the raw body of a GIF document, returns the dimensions of the image.
+#
+sub gif_size($) {
+ my ($body) = @_;
+ my $type = substr($body, 0, 6);
+ my $s;
+ return () unless ($type =~ /GIF8[7,9]a/);
+ $s = substr ($body, 6, 10);
+ my ($a,$b,$c,$d) = unpack ("C"x4, $s);
+ return () unless defined ($d);
+ return (($b<<8|$a), ($d<<8|$c));
+}
- if (!$no_output_p && !$ENV{DISPLAY}) {
- die "$progname: \$DISPLAY is not set.\n";
+# Given the raw body of a JPEG document, returns the dimensions of the image.
+#
+sub jpeg_size($) {
+ my ($body) = @_;
+ my $i = 0;
+ my $L = length($body);
+
+ my $c1 = substr($body, $i, 1); $i++;
+ my $c2 = substr($body, $i, 1); $i++;
+ return () unless (ord($c1) == 0xFF && ord($c2) == 0xD8);
+
+ my $ch = "0";
+ while (ord($ch) != 0xDA && $i < $L) {
+ # Find next marker, beginning with 0xFF.
+ while (ord($ch) != 0xFF) {
+ return () if (length($body) <= $i);
+ $ch = substr($body, $i, 1); $i++;
+ }
+ # markers can be padded with any number of 0xFF.
+ while (ord($ch) == 0xFF) {
+ return () if (length($body) <= $i);
+ $ch = substr($body, $i, 1); $i++;
}
- if ($urls_only_p) {
- url_only_output;
+ # $ch contains the value of the marker.
+ my $marker = ord($ch);
+
+ if (($marker >= 0xC0) &&
+ ($marker <= 0xCF) &&
+ ($marker != 0xC4) &&
+ ($marker != 0xCC)) { # it's a SOFn marker
+ $i += 3;
+ return () if (length($body) <= $i);
+ my $s = substr($body, $i, 4); $i += 4;
+ my ($a,$b,$c,$d) = unpack("C"x4, $s);
+ return (($c<<8|$d), ($a<<8|$b));
+
} else {
- x_output;
+ # We must skip variables, since FFs in variable names aren't
+ # valid JPEG markers.
+ return () if (length($body) <= $i);
+ my $s = substr($body, $i, 2); $i += 2;
+ my ($c1, $c2) = unpack ("C"x2, $s);
+ my $length = ($c1 << 8) | $c2;
+ return () if ($length < 2);
+ $i += $length-2;
+ }
+ }
+ return ();
+}
+
+# Given the raw body of a PNG document, returns the dimensions of the image.
+#
+sub png_size($) {
+ my ($body) = @_;
+ return () unless ($body =~ m/^\211PNG\r/);
+ my ($bits) = ($body =~ m/^.{12}(.{12})/s);
+ return () unless defined ($bits);
+ return () unless ($bits =~ /^IHDR/);
+ my ($ign, $w, $h) = unpack("a4N2", $bits);
+ return ($w, $h);
+}
+
+
+# Given the raw body of a GIF, JPEG, or PNG document, returns the dimensions
+# of the image.
+#
+sub image_size($) {
+ my ($body) = @_;
+ my ($w, $h) = gif_size ($body);
+ if ($w && $h) { return ($w, $h); }
+ ($w, $h) = jpeg_size ($body);
+ if ($w && $h) { return ($w, $h); }
+ return png_size ($body);
+}
+
+
+# returns the full path of the named program, or undef.
+#
+sub which($) {
+ my ($prog) = @_;
+ foreach (split (/:/, $ENV{PATH})) {
+ if (-x "$_/$prog") {
+ return $prog;
}
+ }
+ return undef;
}
+# Like rand(), but chooses numbers with a bell curve distribution.
+sub bellrand(;$) {
+ ($_) = @_;
+ $_ = 1.0 unless defined($_);
+ $_ /= 3.0;
+ return (rand($_) + rand($_) + rand($_));
+}
+
+
+sub exit_cleanup() {
+ x_cleanup();
+ print STDERR "$progname: exiting\n" if ($verbose_warnings);
+ if (@pids_to_kill) {
+ print STDERR blurb() . "killing: " . join(' ', @pids_to_kill) . "\n";
+ kill ('TERM', @pids_to_kill);
+ }
+}
+
+sub signal_cleanup($) {
+ my ($sig) = @_;
+ print STDERR blurb() . (defined($sig)
+ ? "caught signal $sig."
+ : "exiting.")
+ . "\n"
+ if ($verbose_exec || $verbose_warnings);
+ exit 1;
+}
+
+
+
+##############################################################################
+#
+# Generating a list of urls only
+#
+##############################################################################
+
+sub url_only_output() {
+ do {
+ my ($base, $img) = pick_image;
+ if ($img) {
+ $base =~ s/ /%20/g;
+ $img =~ s/ /%20/g;
+ print "$img $base\n";
+ }
+ } while (1);
+}
+
##############################################################################
#
-# Decide if we're in X or CGI mode, and dispatch.
+# Running as an xscreensaver module, or as a web page imagemap
#
##############################################################################
-sub main {
- srand(time ^ $$);
- if ( $progname =~ m/\.cgi$/i || $ENV{REQUEST_METHOD} ) {
- cgi_main;
+my $image_ppm = sprintf ("%s/webcollage-%08x.ppm",
+ ($ENV{TMPDIR} ? $ENV{TMPDIR} : "/tmp"),
+ rand(0xFFFFFFFF));
+my $image_tmp1 = sprintf ("%s/webcollage-1-%08x.ppm",
+ ($ENV{TMPDIR} ? $ENV{TMPDIR} : "/tmp"),
+ rand(0xFFFFFFFF));
+my $image_tmp2 = sprintf ("%s/webcollage-2-%08x.ppm",
+ ($ENV{TMPDIR} ? $ENV{TMPDIR} : "/tmp"),
+ rand(0xFFFFFFFF));
+
+my $filter_cmd = undef;
+my $post_filter_cmd = undef;
+my $background = undef;
+
+my @imagemap_areas = ();
+my $imagemap_html_tmp = undef;
+my $imagemap_jpg_tmp = undef;
+
+
+my $img_width; # size of the image being generated.
+my $img_height;
+
+my $delay = 2;
+
+sub x_cleanup() {
+ unlink $image_ppm, $image_tmp1, $image_tmp2;
+ unlink $imagemap_html_tmp, $imagemap_jpg_tmp
+ if (defined ($imagemap_html_tmp));
+}
+
+
+# Like system, but prints status about exit codes, and kills this process
+# with whatever signal killed the sub-process, if any.
+#
+sub nontrapping_system(@) {
+ $! = 0;
+
+ $_ = join(" ", @_);
+ s/\"[^\"]+\"/\"...\"/g;
+
+ LOG ($verbose_exec, "executing \"$_\"");
+
+ my $rc = system @_;
+
+ if ($rc == 0) {
+ LOG ($verbose_exec, "subproc exited normally.");
+ } elsif (($rc & 0xff) == 0) {
+ $rc >>= 8;
+ LOG ($verbose_exec, "subproc exited with status $rc.");
+ } else {
+ if ($rc & 0x80) {
+ LOG ($verbose_exec, "subproc dumped core.");
+ $rc &= ~0x80;
+ }
+ LOG ($verbose_exec, "subproc died with signal $rc.");
+ # die that way ourselves.
+ kill $rc, $$;
+ }
+
+ return $rc;
+}
+
+
+# Given the URL of a GIF, JPEG, or PNG image, and the body of that image,
+# writes a PPM to the given output file. Returns the width/height of the
+# image if successful.
+#
+sub image_to_pnm($$$) {
+ my ($url, $body, $output) = @_;
+ my ($cmd, $cmd2, $w, $h);
+
+ if ((@_ = gif_size ($body))) {
+ ($w, $h) = @_;
+ $cmd = "giftopnm";
+ } elsif ((@_ = jpeg_size ($body))) {
+ ($w, $h) = @_;
+ $cmd = "djpeg";
+ } elsif ((@_ = png_size ($body))) {
+ ($w, $h) = @_;
+ $cmd = "pngtopnm";
+ } else {
+ LOG (($verbose_pbm || $verbose_load),
+ "not a GIF, JPG, or PNG" .
+ (($body =~ m@<(base|html|head|body|script|table|a href)\b@i)
+ ? " (looks like HTML)" : "") .
+ ": $url");
+ $suppress_audit = 1;
+ return ();
+ }
+
+ $cmd2 = "exec $cmd"; # yes, this really is necessary. if we don't
+ # do this, the process doesn't die properly.
+ if (!$verbose_pbm) {
+ #
+ # We get a "giftopnm: got a 'Application Extension' extension"
+ # warning any time it's an animgif.
+ #
+ # Note that "giftopnm: EOF / read error on image data" is not
+ # always a fatal error -- sometimes the image looks fine anyway.
+ #
+ $cmd2 .= " 2>/dev/null";
+ }
+
+ # There exist corrupted GIF and JPEG files that can make giftopnm and
+ # djpeg lose their minds and go into a loop. So this gives those programs
+ # a small timeout -- if they don't complete in time, kill them.
+ #
+ my $pid;
+ @_ = eval {
+ my $timed_out;
+
+ local $SIG{ALRM} = sub {
+ LOG ($verbose_pbm,
+ "timed out ($cvt_timeout) for $cmd on \"$url\" in pid $pid");
+ kill ('TERM', $pid) if ($pid);
+ $timed_out = 1;
+ $body = undef;
+ };
+
+ if (($pid = open (my $pipe, "| $cmd2 > $output"))) {
+ $timed_out = 0;
+ alarm $cvt_timeout;
+ print $pipe $body;
+ $body = undef;
+ close $pipe;
+
+ LOG ($verbose_exec, "awaiting $pid");
+ waitpid ($pid, 0);
+ LOG ($verbose_exec, "$pid completed");
+
+ my $size = (stat($output))[7];
+ $size = -1 unless defined($size);
+ if ($size < 5) {
+ LOG ($verbose_pbm, "$cmd on ${w}x$h \"$url\" failed ($size bytes)");
+ return ();
+ }
+
+ LOG ($verbose_pbm, "created ${w}x$h $output ($cmd)");
+ return ($w, $h);
+ } else {
+ print STDERR blurb() . "$cmd failed: $!\n";
+ return ();
+ }
+ };
+ die if ($@ && $@ ne "alarm\n"); # propagate errors
+ if ($@) {
+ # timed out
+ $body = undef;
+ return ();
+ } else {
+ # didn't
+ alarm 0;
+ $body = undef;
+ return @_;
+ }
+}
+
+
+# Same as the "ppmmake" command: creates a solid-colored PPM.
+# Does not understand the rgb.txt color names except "black" and "white".
+#
+sub ppmmake($$$$) {
+ my ($outfile, $bgcolor, $w, $h) = @_;
+
+ my ($r, $g, $b);
+ if ($bgcolor =~ m/^\#?([\dA-F][\dA-F])([\dA-F][\dA-F])([\dA-F][\dA-F])$/i ||
+ $bgcolor =~ m/^\#?([\dA-F])([\dA-F])([\dA-F])$/i) {
+ ($r, $g, $b) = (hex($1), hex($2), hex($3));
+ } elsif ($bgcolor =~ m/^black$/i) {
+ ($r, $g, $b) = (0, 0, 0);
+ } elsif ($bgcolor =~ m/^white$/i) {
+ ($r, $g, $b) = (0xFF, 0xFF, 0xFF);
+ } else {
+ error ("unparsable color name: $bgcolor");
+ }
+
+ my $pixel = pack('CCC', $r, $g, $b);
+ my $bits = "P6\n$w $h\n255\n" . ($pixel x ($w * $h));
+
+ open (my $out, '>', $outfile) || error ("$outfile: $!");
+ print $out $bits;
+ close $out;
+}
+
+
+sub pick_root_displayer() {
+ my @names = ();
+
+ if ($cocoa_p) {
+ # see "xscreensaver/hacks/webcollage-cocoa.m"
+ return "echo COCOA LOAD ";
+ }
+
+ foreach my $cmd (@root_displayers) {
+ $_ = $cmd;
+ my ($name) = m/^([^ ]+)/;
+ push @names, "\"$name\"";
+ LOG ($verbose_exec, "looking for $name...");
+ foreach my $dir (split (/:/, $ENV{PATH})) {
+ LOG ($verbose_exec, " checking $dir/$name");
+ return $cmd if (-x "$dir/$name");
+ }
+ }
+
+ $names[$#names] = "or " . $names[$#names];
+ error "none of: " . join (", ", @names) . " were found on \$PATH.";
+}
+
+
+my $ppm_to_root_window_cmd = undef;
+
+
+sub x_or_pbm_output($) {
+ my ($window_id) = @_;
+
+ # Check for our helper program, to see whether we need to use PPM pipelines.
+ #
+ $_ = "webcollage-helper";
+ if (defined ($webcollage_helper) || which ($_)) {
+ $webcollage_helper = $_ unless (defined($webcollage_helper));
+ LOG ($verbose_pbm, "found \"$webcollage_helper\"");
+ $webcollage_helper .= " -v";
+ } else {
+ LOG (($verbose_pbm || $verbose_load), "no $_ program");
+ }
+
+ if ($cocoa_p && !defined ($webcollage_helper)) {
+ error ("webcollage-helper not found in Cocoa-mode!");
+ }
+
+
+ # make sure the various programs we execute exist, right up front.
+ #
+ my @progs = ();
+
+ if (!defined($webcollage_helper)) {
+ # Only need these others if we don't have the helper.
+ @progs = (@progs,
+ "giftopnm", "pngtopnm", "djpeg",
+ "pnmpaste", "pnmscale", "pnmcut");
+ }
+
+ foreach (@progs) {
+ which ($_) || error "$_ not found on \$PATH.";
+ }
+
+ # find a root-window displayer program.
+ #
+ if (!$no_output_p) {
+ $ppm_to_root_window_cmd = pick_root_displayer();
+ }
+
+ if (defined ($window_id)) {
+ error ("-window-id only works if xscreensaver-getimage is installed")
+ unless ($ppm_to_root_window_cmd =~ m/^xscreensaver-getimage\b/);
+
+ error ("unparsable window id: $window_id")
+ unless ($window_id =~ m/^\d+$|^0x[\da-f]+$/i);
+ $ppm_to_root_window_cmd =~ s/--?root\b/$window_id/ ||
+ error ("unable to munge displayer: $ppm_to_root_window_cmd");
+ }
+
+ if (!$img_width || !$img_height) {
+
+ if (!defined ($window_id) &&
+ defined ($ENV{XSCREENSAVER_WINDOW})) {
+ $window_id = $ENV{XSCREENSAVER_WINDOW};
+ }
+
+ if (!defined ($window_id)) {
+ $_ = "xdpyinfo";
+ which ($_) || error "$_ not found on \$PATH.";
+ $_ = `$_`;
+ ($img_width, $img_height) = m/dimensions: *(\d+)x(\d+) /;
+ if (!defined($img_height)) {
+ error "xdpyinfo failed.";
+ }
+ } else { # we have a window id
+ $_ = "xwininfo";
+ which ($_) || error "$_ not found on \$PATH.";
+ $_ .= " -id $window_id";
+ $_ = `$_`;
+ ($img_width, $img_height) = m/^\s*Width:\s*(\d+)\n\s*Height:\s*(\d+)\n/m;
+
+ if (!defined($img_height)) {
+ error "xwininfo failed.";
+ }
+ }
+ }
+
+ my $bgcolor = "#000000";
+ my $bgimage = undef;
+
+ if ($background) {
+ if ($background =~ m/^\#[0-9a-f]+$/i) {
+ $bgcolor = $background;
+
+ } elsif (-r $background) {
+ $bgimage = $background;
+
+ } elsif (! $background =~ m@^[-a-z0-9 ]+$@i) {
+ error "not a color or readable file: $background";
+
+ } else {
+ # default to assuming it's a color
+ $bgcolor = $background;
+ }
+ }
+
+ # Create the sold-colored base image.
+ #
+ LOG ($verbose_pbm, "creating base image: ${img_width}x${img_height}");
+ $_ = ppmmake ($image_ppm, $bgcolor, $img_width, $img_height);
+
+ # Paste the default background image in the middle of it.
+ #
+ if ($bgimage) {
+ my ($iw, $ih);
+
+ my $body = "";
+ open (my $imgf, '<', $bgimage) || error "couldn't open $bgimage: $!";
+ local $/ = undef; # read entire file
+ $body = <$imgf>;
+ close ($imgf);
+
+ my $cmd;
+ if ((@_ = gif_size ($body))) {
+ ($iw, $ih) = @_;
+ $cmd = "giftopnm |";
+
+ } elsif ((@_ = jpeg_size ($body))) {
+ ($iw, $ih) = @_;
+ $cmd = "djpeg |";
+
+ } elsif ((@_ = png_size ($body))) {
+ ($iw, $ih) = @_;
+ $cmd = "pngtopnm |";
+
+ } elsif ($body =~ m/^P\d\n(\d+) (\d+)\n/) {
+ $iw = $1;
+ $ih = $2;
+ $cmd = "";
+
+ } else {
+ error "$bgimage is not a GIF, JPEG, PNG, or PPM.";
+ }
+
+ my $x = int (($img_width - $iw) / 2);
+ my $y = int (($img_height - $ih) / 2);
+ LOG ($verbose_pbm,
+ "pasting $bgimage (${iw}x$ih) into base image at $x,$y");
+
+ $cmd .= "pnmpaste - $x $y $image_ppm > $image_tmp1";
+ open ($imgf, "| $cmd") || error "running $cmd: $!";
+ print $imgf $body;
+ $body = undef;
+ close ($imgf);
+ LOG ($verbose_exec, "subproc exited normally.");
+ rename ($image_tmp1, $image_ppm) ||
+ error "renaming $image_tmp1 to $image_ppm: $!";
+ }
+
+ clearlog();
+
+ while (1) {
+ my ($base, $img) = pick_image();
+ my $source = $current_state;
+ $current_state = "loadimage";
+ if ($img) {
+ my ($headers, $body) = get_document ($img, $base);
+ if ($body) {
+ paste_image ($base, $img, $body, $source);
+ $body = undef;
+ }
+ }
+ $current_state = "idle";
+ $load_method = "none";
+
+ unlink $image_tmp1, $image_tmp2;
+ sleep $delay;
+ }
+}
+
+sub paste_image($$$$) {
+ my ($base, $img, $body, $source) = @_;
+
+ $current_state = "paste";
+
+ $suppress_audit = 0;
+
+ LOG ($verbose_pbm, "got $img (" . length($body) . ")");
+
+ my ($iw, $ih);
+
+ # If we are using the webcollage-helper, then we do not need to convert this
+ # image to a PPM. But, if we're using a filter command, we still must, since
+ # that's what the filters expect (webcollage-helper can read PPMs, so that's
+ # fine.)
+ #
+ if (defined ($webcollage_helper) &&
+ !defined ($filter_cmd)) {
+
+ ($iw, $ih) = image_size ($body);
+ if (!$iw || !$ih) {
+ LOG (($verbose_pbm || $verbose_load),
+ "not a GIF, JPG, or PNG" .
+ (($body =~ m@<(base|html|head|body|script|table|a href)>@i)
+ ? " (looks like HTML)" : "") .
+ ": $img");
+ $suppress_audit = 1;
+ $body = undef;
+ return 0;
+ }
+
+ open (my $out, '>', $image_tmp1) || error ("writing $image_tmp1: $!");
+ (print $out $body) || error ("writing $image_tmp1: $!");
+ close ($out) || error ("writing $image_tmp1: $!");
+
+ } else {
+ ($iw, $ih) = image_to_pnm ($img, $body, $image_tmp1);
+ $body = undef;
+ if (!$iw || !$ih) {
+ LOG ($verbose_pbm, "unable to make PBM from $img");
+ return 0;
+ }
+ }
+
+ record_success ($load_method, $img, $base);
+
+
+ my $ow = $iw; # used only for error messages
+ my $oh = $ih;
+
+ # don't just tack this onto the front of the pipeline -- we want it to
+ # be able to change the size of the input image.
+ #
+ if ($filter_cmd) {
+ LOG ($verbose_pbm, "running $filter_cmd");
+
+ my $rc = nontrapping_system "($filter_cmd) < $image_tmp1 >$image_tmp2";
+ if ($rc != 0) {
+ LOG(($verbose_pbm || $verbose_load), "failed command: \"$filter_cmd\"");
+ LOG(($verbose_pbm || $verbose_load), "failed URL: \"$img\" (${ow}x$oh)");
+ return;
+ }
+ rename ($image_tmp2, $image_tmp1);
+
+ # re-get the width/height in case the filter resized it.
+ open (my $imgf, '<', $image_tmp1) || return 0;
+ $_ = <$imgf>;
+ $_ = <$imgf>;
+ ($iw, $ih) = m/^(\d+) (\d+)$/;
+ close ($imgf);
+ return 0 unless ($iw && $ih);
+ }
+
+ my $target_w = $img_width; # max rectangle into which the image must fit
+ my $target_h = $img_height;
+
+ my $cmd = "";
+ my $scale = 1.0;
+
+
+ # Usually scale the image to fit on the screen -- but sometimes scale it
+ # to fit on half or a quarter of the screen. (We do this by reducing the
+ # size of the target rectangle.) Note that the image is not merely scaled
+ # to fit; we instead cut the image in half repeatedly until it fits in the
+ # target rectangle -- that gives a wider distribution of sizes.
+ #
+ if (rand() < 0.3) { $target_w /= 2; $target_h /= 2; } # reduce target rect
+ if (rand() < 0.3) { $target_w /= 2; $target_h /= 2; }
+
+ if ($iw > $target_w || $ih > $target_h) {
+ while ($iw > $target_w ||
+ $ih > $target_h) {
+ $iw = int($iw / 2);
+ $ih = int($ih / 2);
+ $scale /= 2;
+ }
+ if ($iw <= 10 || $ih <= 10) {
+ LOG ($verbose_pbm, "scaling to ${iw}x$ih would have been bogus.");
+ return 0;
+ }
+
+ LOG ($verbose_pbm, "scaling to ${iw}x$ih ($scale)");
+
+ $cmd .= " | pnmscale -xsize $iw -ysize $ih";
+ }
+
+
+ my $src = $image_tmp1;
+
+ my $crop_x = 0; # the sub-rectangle of the image
+ my $crop_y = 0; # that we will actually paste.
+ my $crop_w = $iw;
+ my $crop_h = $ih;
+
+ # The chance that we will randomly crop out a section of an image starts
+ # out fairly low, but goes up for images that are very large, or images
+ # that have ratios that make them look like banners (we try to avoid
+ # banner images entirely, but they slip through when the IMG tags didn't
+ # have WIDTH and HEIGHT specified.)
+ #
+ my $crop_chance = 0.2;
+ if ($iw > $img_width * 0.4 || $ih > $img_height * 0.4) {
+ $crop_chance += 0.2;
+ }
+ if ($iw > $img_width * 0.7 || $ih > $img_height * 0.7) {
+ $crop_chance += 0.2;
+ }
+ if ($min_ratio && ($iw * $min_ratio) > $ih) {
+ $crop_chance += 0.7;
+ }
+
+ if ($crop_chance > 0.1) {
+ LOG ($verbose_pbm, "crop chance: $crop_chance");
+ }
+
+ if (rand() < $crop_chance) {
+
+ my $ow = $crop_w;
+ my $oh = $crop_h;
+
+ if ($crop_w > $min_width) {
+ # if it's a banner, select the width linearly.
+ # otherwise, select a bell.
+ my $r = (($min_ratio && ($iw * $min_ratio) > $ih)
+ ? rand()
+ : bellrand());
+ $crop_w = $min_width + int ($r * ($crop_w - $min_width));
+ $crop_x = int (rand() * ($ow - $crop_w));
+ }
+ if ($crop_h > $min_height) {
+ # height always selects as a bell.
+ $crop_h = $min_height + int (bellrand() * ($crop_h - $min_height));
+ $crop_y = int (rand() * ($oh - $crop_h));
+ }
+
+ if ($crop_x != 0 || $crop_y != 0 ||
+ $crop_w != $iw || $crop_h != $ih) {
+ LOG ($verbose_pbm,
+ "randomly cropping to ${crop_w}x$crop_h \@ $crop_x,$crop_y");
+ }
+ }
+
+ # Where the image should logically land -- this might be negative.
+ #
+ my $x = int((rand() * ($img_width + $crop_w/2)) - $crop_w*3/4);
+ my $y = int((rand() * ($img_height + $crop_h/2)) - $crop_h*3/4);
+
+ # if we have chosen to paste the image outside of the rectangle of the
+ # screen, then we need to crop it.
+ #
+ if ($x < 0 ||
+ $y < 0 ||
+ $x + $crop_w > $img_width ||
+ $y + $crop_h > $img_height) {
+
+ LOG ($verbose_pbm,
+ "cropping for effective paste of ${crop_w}x$crop_h \@ $x,$y");
+
+ if ($x < 0) { $crop_x -= $x; $crop_w += $x; $x = 0; }
+ if ($y < 0) { $crop_y -= $y; $crop_h += $y; $y = 0; }
+
+ if ($x + $crop_w >= $img_width) { $crop_w = $img_width - $x - 1; }
+ if ($y + $crop_h >= $img_height) { $crop_h = $img_height - $y - 1; }
+ }
+
+ # If any cropping needs to happen, add pnmcut.
+ #
+ if ($crop_x != 0 || $crop_y != 0 ||
+ $crop_w != $iw || $crop_h != $ih) {
+ $iw = $crop_w;
+ $ih = $crop_h;
+ $cmd .= " | pnmcut $crop_x $crop_y $iw $ih";
+ LOG ($verbose_pbm, "cropping to ${crop_w}x$crop_h \@ $crop_x,$crop_y");
+ }
+
+ LOG ($verbose_pbm, "pasting ${iw}x$ih \@ $x,$y in $image_ppm");
+
+ $cmd .= " | pnmpaste - $x $y $image_ppm";
+
+ $cmd =~ s@^ *\| *@@;
+
+ if (defined ($webcollage_helper)) {
+ $cmd = "$webcollage_helper $image_tmp1 $image_ppm " .
+ "$scale $opacity " .
+ "$crop_x $crop_y $x $y " .
+ "$iw $ih";
+ $_ = $cmd;
+
+ } else {
+ # use a PPM pipeline
+ $_ = "($cmd)";
+ $_ .= " < $image_tmp1 > $image_tmp2";
+ }
+
+ if ($verbose_pbm) {
+ $_ = "($_) 2>&1 | sed s'/^/" . blurb() . "/'";
+ } else {
+ $_ .= " 2> /dev/null";
+ }
+
+ my $rc = nontrapping_system ($_);
+
+ if (defined ($webcollage_helper) && -z $image_ppm) {
+ LOG (1, "failed command: \"$cmd\"");
+ print STDERR "\naudit log:\n\n\n";
+ print STDERR ("#" x 78) . "\n";
+ print STDERR blurb() . "$image_ppm has zero size\n";
+ showlog();
+ print STDERR "\n\n";
+ exit (1);
+ }
+
+ if ($rc != 0) {
+ LOG (($verbose_pbm || $verbose_load), "failed command: \"$cmd\"");
+ LOG (($verbose_pbm || $verbose_load), "failed URL: \"$img\" (${ow}x$oh)");
+ return;
+ }
+
+ if (!defined ($webcollage_helper)) {
+ rename ($image_tmp2, $image_ppm) || return;
+ }
+
+ my $target = "$image_ppm";
+
+ # don't just tack this onto the end of the pipeline -- we don't want it
+ # to end up in $image_ppm, because we don't want the results to be
+ # cumulative.
+ #
+ if ($post_filter_cmd) {
+
+ my $cmd;
+
+ $target = $image_tmp1;
+ if (!defined ($webcollage_helper)) {
+ $cmd = "($post_filter_cmd) < $image_ppm > $target";
+ } else {
+ # Blah, my scripts need the JPEG data, but some other folks need
+ # the PPM data -- what to do? Ignore the problem, that's what!
+# $cmd = "djpeg < $image_ppm | ($post_filter_cmd) > $target";
+ $cmd = "($post_filter_cmd) < $image_ppm > $target";
+ }
+
+ $rc = nontrapping_system ($cmd);
+ if ($rc != 0) {
+ LOG ($verbose_pbm, "filter failed: \"$post_filter_cmd\"\n");
+ return;
+ }
+ }
+
+ if (!$no_output_p) {
+ my $tsize = (stat($target))[7];
+ if ($tsize > 200) {
+ $cmd = "$ppm_to_root_window_cmd $target";
+
+ # xv seems to hate being killed. it tends to forget to clean
+ # up after itself, and leaves windows around and colors allocated.
+ # I had this same problem with vidwhacker, and I'm not entirely
+ # sure what I did to fix it. But, let's try this: launch xv
+ # in the background, so that killing this process doesn't kill it.
+ # it will die of its own accord soon enough. So this means we
+ # start pumping bits to the root window in parallel with starting
+ # the next network retrieval, which is probably a better thing
+ # to do anyway.
+ #
+ $cmd .= " &" unless ($cocoa_p);
+
+ $rc = nontrapping_system ($cmd);
+
+ if ($rc != 0) {
+ LOG (($verbose_pbm || $verbose_load), "display failed: \"$cmd\"");
+ return;
+ }
+
+ } else {
+ LOG ($verbose_pbm, "$target size is $tsize");
+ }
+ }
+
+ $source .= "-" . stats_of($source);
+ print STDOUT "image: ${iw}x${ih} @ $x,$y $base $source\n"
+ if ($verbose_imgmap);
+ if ($imagemap_base) {
+ update_imagemap ($base, $x, $y, $iw, $ih,
+ $image_ppm, $img_width, $img_height);
+ }
+
+ clearlog();
+
+ return 1;
+}
+
+
+sub update_imagemap($$$$$$$$) {
+ my ($url, $x, $y, $w, $h, $image_ppm, $image_width, $image_height) = @_;
+
+ $current_state = "imagemap";
+
+ my $max_areas = 200;
+
+ $url = html_quote ($url);
+ my $x2 = $x + $w;
+ my $y2 = $y + $h;
+ my $area = "<AREA SHAPE=RECT COORDS=\"$x,$y,$x2,$y2\" HREF=\"$url\">";
+ unshift @imagemap_areas, $area; # put one on the front
+ if ($#imagemap_areas >= $max_areas) {
+ pop @imagemap_areas; # take one off the back.
+ }
+
+ LOG ($verbose_pbm, "area: $x,$y,$x2,$y2 (${w}x$h)");
+
+ my $map_name = $imagemap_base;
+ $map_name =~ s@^.*/@@;
+ $map_name = 'collage' if ($map_name eq '');
+
+ my $imagemap_html = $imagemap_base . ".html";
+ my $imagemap_jpg = $imagemap_base . ".jpg";
+ my $imagemap_jpg2 = $imagemap_jpg;
+ $imagemap_jpg2 =~ s@^.*/@@gs;
+
+ if (!defined ($imagemap_html_tmp)) {
+ $imagemap_html_tmp = $imagemap_html . sprintf (".%08x", rand(0xffffffff));
+ $imagemap_jpg_tmp = $imagemap_jpg . sprintf (".%08x", rand(0xffffffff));
+ }
+
+ # Read the imagemap html file (if any) to get a template.
+ #
+ my $template_html = '';
+ {
+ if (open (my $in, '<', $imagemap_html)) {
+ local $/ = undef; # read entire file
+ $template_html = <$in>;
+ close $in;
+ LOG ($verbose_pbm, "read template $imagemap_html");
+ }
+
+ if ($template_html =~ m/^\s*$/s) {
+ $template_html = ("<MAP NAME=\"$map_name\"></MAP>\n" .
+ "<IMG SRC=\"$imagemap_jpg2\"" .
+ " USEMAP=\"$map_name\">\n");
+ LOG ($verbose_pbm, "created dummy template");
+ }
+ }
+
+ # Write the jpg to a tmp file
+ #
+ {
+ my $cmd;
+ if (defined ($webcollage_helper)) {
+ $cmd = "cp -p $image_ppm $imagemap_jpg_tmp";
+ } else {
+ $cmd = "cjpeg < $image_ppm > $imagemap_jpg_tmp";
+ }
+ my $rc = nontrapping_system ($cmd);
+ if ($rc != 0) {
+ error ("imagemap jpeg failed: \"$cmd\"\n");
+ }
+ }
+
+ # Write the html to a tmp file
+ #
+ {
+ my $body = $template_html;
+ my $areas = join ("\n\t", @imagemap_areas);
+ my $map = ("<MAP NAME=\"$map_name\">\n\t$areas\n</MAP>");
+ my $img = ("<IMG SRC=\"$imagemap_jpg2\" " .
+ "BORDER=0 " .
+ "WIDTH=$image_width HEIGHT=$image_height " .
+ "USEMAP=\"#$map_name\">");
+ $body =~ s@(<MAP\s+NAME=\"[^\"]*\"\s*>).*?(</MAP>)@$map@is;
+ $body =~ s@<IMG\b[^<>]*\bUSEMAP\b[^<>]*>@$img@is;
+
+ # if there are magic webcollage spans in the html, update those too.
+ #
+ {
+ my @st = stat ($imagemap_jpg_tmp);
+ my $date = strftime("%d-%b-%Y %l:%M:%S %p %Z", localtime($st[9]));
+ my $size = int(($st[7] / 1024) + 0.5) . "K";
+ $body =~ s@(<SPAN\s+CLASS=\"webcollage_date\">).*?(</SPAN>)@$1$date$2@si;
+ $body =~ s@(<SPAN\s+CLASS=\"webcollage_size\">).*?(</SPAN>)@$1$size$2@si;
+ }
+
+ open (my $out, '>', $imagemap_html_tmp) || error ("$imagemap_html_tmp: $!");
+ (print $out $body) || error ("$imagemap_html_tmp: $!");
+ close ($out) || error ("$imagemap_html_tmp: $!");
+ LOG ($verbose_pbm, "wrote $imagemap_html_tmp");
+ }
+
+ # Rename the two tmp files to the real files
+ #
+ rename ($imagemap_html_tmp, $imagemap_html) ||
+ error "renaming $imagemap_html_tmp to $imagemap_html";
+ LOG ($verbose_pbm, "wrote $imagemap_html");
+ rename ($imagemap_jpg_tmp, $imagemap_jpg) ||
+ error "renaming $imagemap_jpg_tmp to $imagemap_jpg";
+ LOG ($verbose_pbm, "wrote $imagemap_jpg");
+}
+
+
+# Figure out what the proxy server should be, either from environment
+# variables or by parsing the output of the (MacOS) program "scutil",
+# which tells us what the system-wide proxy settings are.
+#
+sub set_proxy() {
+
+ if (! $http_proxy) {
+ # historical suckage: the environment variable name is lower case.
+ $http_proxy = $ENV{http_proxy} || $ENV{HTTP_PROXY};
+ }
+
+ if (defined ($http_proxy)) {
+ if ($http_proxy && $http_proxy =~ m@^http://([^/]*)/?$@ ) {
+ # historical suckage: allow "http://host:port" as well as "host:port".
+ $http_proxy = $1;
+ }
+
+ } else {
+ my $proxy_data = `scutil --proxy 2>/dev/null`;
+ my ($server) = ($proxy_data =~ m/\bHTTPProxy\s*:\s*([^\s]+)/s);
+ my ($port) = ($proxy_data =~ m/\bHTTPPort\s*:\s*([^\s]+)/s);
+ # Note: this ignores the "ExceptionsList".
+ if ($server) {
+ $http_proxy = $server;
+ $http_proxy .= ":$port" if $port;
+ }
+ }
+
+ if ($http_proxy) {
+ LOG ($verbose_net, "proxy server: $http_proxy");
+ }
+}
+
+
+sub init_signals() {
+
+ $SIG{HUP} = \&signal_cleanup;
+ $SIG{INT} = \&signal_cleanup;
+ $SIG{QUIT} = \&signal_cleanup;
+ $SIG{ABRT} = \&signal_cleanup;
+ $SIG{KILL} = \&signal_cleanup;
+ $SIG{TERM} = \&signal_cleanup;
+
+ # Need this so that if giftopnm dies, we don't die.
+ $SIG{PIPE} = 'IGNORE';
+}
+
+END { exit_cleanup(); }
+
+
+sub main() {
+ $| = 1;
+ srand(time ^ $$);
+
+ my $verbose = 0;
+ my $dict;
+ my $driftnet_cmd = 0;
+
+ $current_state = "init";
+ $load_method = "none";
+
+ my $root_p = 0;
+ my $window_id = undef;
+
+ while ($_ = $ARGV[0]) {
+ shift @ARGV;
+ if ($_ eq "-display" ||
+ $_ eq "-displ" ||
+ $_ eq "-disp" ||
+ $_ eq "-dis" ||
+ $_ eq "-dpy" ||
+ $_ eq "-d") {
+ $ENV{DISPLAY} = shift @ARGV;
+ } elsif ($_ eq "-root") {
+ $root_p = 1;
+ } elsif ($_ eq "-window-id" || $_ eq "--window-id") {
+ $window_id = shift @ARGV;
+ $root_p = 1;
+ } elsif ($_ eq "-no-output") {
+ $no_output_p = 1;
+ } elsif ($_ eq "-urls-only") {
+ $urls_only_p = 1;
+ $no_output_p = 1;
+ } elsif ($_ eq "-cocoa") {
+ $cocoa_p = 1;
+ } elsif ($_ eq "-imagemap") {
+ $imagemap_base = shift @ARGV;
+ $no_output_p = 1;
+ } elsif ($_ eq "-verbose") {
+ $verbose++;
+ } elsif (m/^-v+$/) {
+ $verbose += length($_)-1;
+ } elsif ($_ eq "-delay") {
+ $delay = shift @ARGV;
+ } elsif ($_ eq "-timeout") {
+ $http_timeout = shift @ARGV;
+ } elsif ($_ eq "-filter") {
+ $filter_cmd = shift @ARGV;
+ } elsif ($_ eq "-filter2") {
+ $post_filter_cmd = shift @ARGV;
+ } elsif ($_ eq "-background" || $_ eq "-bg") {
+ $background = shift @ARGV;
+ } elsif ($_ eq "-size") {
+ $_ = shift @ARGV;
+ if (m@^(\d+)x(\d+)$@) {
+ $img_width = $1;
+ $img_height = $2;
+ } else {
+ error "argument to \"-size\" must be of the form \"640x400\"";
+ }
+ } elsif ($_ eq "-proxy" || $_ eq "-http-proxy") {
+ $http_proxy = shift @ARGV;
+ } elsif ($_ eq "-dictionary" || $_ eq "-dict") {
+ $dict = shift @ARGV;
+ } elsif ($_ eq "-opacity") {
+ $opacity = shift @ARGV;
+ error ("opacity must be between 0.0 and 1.0")
+ if ($opacity <= 0 || $opacity > 1);
+ } elsif ($_ eq "-driftnet" || $_ eq "--driftnet") {
+ @search_methods = ( 100, "driftnet", \&pick_from_driftnet );
+ if (! ($ARGV[0] =~ m/^-/)) {
+ $driftnet_cmd = shift @ARGV;
+ } else {
+ $driftnet_cmd = $default_driftnet_cmd;
+ }
+ } elsif ($_ eq "-directory" || $_ eq "--directory") {
+ @search_methods = ( 100, "local", \&pick_from_local_dir );
+ if (! ($ARGV[0] =~ m/^-/)) {
+ $local_dir = shift @ARGV;
+ } else {
+ error ("local directory path must be set")
+ }
+ } elsif ($_ eq "-fps") {
+ # -fps only works on MacOS, via "webcollage-cocoa.m".
+ # Ignore it if passed to this script in an X11 context.
+ } elsif ($_ eq "-debug" || $_ eq "--debug") {
+ my $which = shift @ARGV;
+ my @rest = @search_methods;
+ my $ok = 0;
+ while (@rest) {
+ my $pct = shift @rest;
+ my $name = shift @rest;
+ my $tfn = shift @rest;
+
+ if ($name eq $which) {
+ @search_methods = (100, $name, $tfn);
+ $ok = 1;
+ last;
+ }
+ }
+ error "no such search method as \"$which\"" unless ($ok);
+ LOG (1, "DEBUG: using only \"$which\"");
+
} else {
- x_main;
+ print STDERR "$copyright\nusage: $progname " .
+ "[-root] [-display dpy] [-verbose] [-debug which]\n" .
+ "\t\t [-timeout secs] [-delay secs] [-size WxH]\n" .
+ "\t\t [-no-output] [-urls-only] [-imagemap filename]\n" .
+ "\t\t [-background color] [-opacity f]\n" .
+ "\t\t [-filter cmd] [-filter2 cmd]\n" .
+ "\t\t [-dictionary dictionary-file] [-http-proxy host[:port]]\n" .
+ "\t\t [-driftnet [driftnet-program-and-args]]\n" .
+ "\t\t [-directory local-image-directory]\n" .
+ "\n";
+ exit 1;
}
+ }
+
+ if (!$root_p && !$no_output_p && !$cocoa_p) {
+ print STDERR $copyright;
+ error "the -root argument is mandatory (for now.)";
+ }
+
+ if (!$no_output_p && !$cocoa_p && !$ENV{DISPLAY}) {
+ error "\$DISPLAY is not set.";
+ }
+
+
+ if ($verbose == 1) {
+ $verbose_imgmap = 1;
+ $verbose_warnings = 1;
+
+ } elsif ($verbose == 2) {
+ $verbose_imgmap = 1;
+ $verbose_warnings = 1;
+ $verbose_load = 1;
+
+ } elsif ($verbose == 3) {
+ $verbose_imgmap = 1;
+ $verbose_warnings = 1;
+ $verbose_load = 1;
+ $verbose_filter = 1;
+
+ } elsif ($verbose == 4) {
+ $verbose_imgmap = 1;
+ $verbose_warnings = 1;
+ $verbose_load = 1;
+ $verbose_filter = 1;
+ $verbose_net = 1;
+
+ } elsif ($verbose == 5) {
+ $verbose_imgmap = 1;
+ $verbose_warnings = 1;
+ $verbose_load = 1;
+ $verbose_filter = 1;
+ $verbose_net = 1;
+ $verbose_pbm = 1;
+
+ } elsif ($verbose == 6) {
+ $verbose_imgmap = 1;
+ $verbose_warnings = 1;
+ $verbose_load = 1;
+ $verbose_filter = 1;
+ $verbose_net = 1;
+ $verbose_pbm = 1;
+ $verbose_http = 1;
+
+ } elsif ($verbose >= 7) {
+ $verbose_imgmap = 1;
+ $verbose_warnings = 1;
+ $verbose_load = 1;
+ $verbose_filter = 1;
+ $verbose_net = 1;
+ $verbose_pbm = 1;
+ $verbose_http = 1;
+ $verbose_exec = 1;
+ }
+
+ if ($dict) {
+ error ("$dict does not exist") unless (-f $dict);
+ $wordlist = $dict;
+ } else {
+ pick_dictionary();
+ }
+
+ if ($imagemap_base && !($img_width && $img_height)) {
+ error ("-size WxH is required with -imagemap");
+ }
+
+ if (defined ($local_dir)) {
+ $_ = "xscreensaver-getimage-file";
+ which ($_) || error "$_ not found on \$PATH.";
+ }
+
+ init_signals();
+ set_proxy();
+
+ spawn_driftnet ($driftnet_cmd) if ($driftnet_cmd);
+
+ if ($urls_only_p) {
+ url_only_output ();
+ } else {
+ x_or_pbm_output ($window_id);
+ }
}
-main;
+main();
exit (0);
projects / xscreensaver / blobdiff