107 lines
4.3 KiB
Perl
107 lines
4.3 KiB
Perl
#!/usr/bin/perl
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#
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# A ajouter dans /etc/crontab
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# 49 2,5,8,11,14,17,20,23 * * * perl /usr/local/bin/clouds.pl
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#49 2,5,8,11,14,17,20,23 * * * mathieu perl /usr/local/bin/clouds.pl > /home/mathieu/xplanetclouds.log
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# ------------------------------------------------------------------------------------
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# Program for downloading XPlanet cloud images from a random mirror
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#
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# Copyright (c) 2003, cueSim Ltd. http://www.cueSim.com, Bedford, UK
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#
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# ------------------------------------------------------------------------------------
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#
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# Redistribution and use, with or without modification, are permitted provided
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# that the following conditions are met:
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#
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# * Redistributions of source code must retain the above copyright notice,
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# this list of conditions and the following disclaimer.
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# * Neither the cueSim name nor the names of its contributors may
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# be used to endorse or promote products derived from this software without
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# specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
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# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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# SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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# OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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# (2005-06) hacked by mose at nguild.org for personal use on a debian SID
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# (2008-08) hacked by benhaim_jerome at yahoo.fr for personal use on a ubuntu Hardy
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use LWP::Simple;
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# Options:
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# - ou sauvegarder l'image des nuages (par defaut le répertoire courant)
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#
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my $Filename = "/home/mathieu/.xplanet/images/clouds.jpg";
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# - fréquences de mise à jour de l'image sur le serveur
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my $MaxDownloadFrequencyHours = 2;
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# - Combien d'essais, si le serveur ne répond pas
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my $MaxRetries = 3;
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## Note: excessive requests to a single image server is discouraged.
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## This script limits max retries, does not download more frequently
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## than every two hours (the file is generated every 3 hours). and
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## picks a random mirror location for every download.
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##
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## Changer les paramètres risque de vous exclure (blacklisted)
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## des serveurs d'images
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if(-f $Filename) {
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my @Stats = stat($Filename);
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my $FileAge = (time() - $Stats[9]);
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my $FileSize = $Stats[7];
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if($FileAge < 60 * 60 * $MaxDownloadFrequencyHours && $FileSize > 400000) {
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print "File is already up to date\n";
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exit(1);
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}
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}
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for(1..$MaxRetries) {
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my $MirrorURL = GetRandomMirror();
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print "Using $MirrorURL\nDownloading...\n";
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my $Response = getstore($MirrorURL, $Filename);
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if( IndicatesSuccess($Response)) {
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print "Finished: file successfully downloaded to $Filename\n";
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exit(0);
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}
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print "Download not available, trying another website\n\n";
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}
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print "ERROR: Tried to download the file $MaxRetries times, but no servers could provide the file\n";
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exit(2);
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sub IndicatesSuccess() {
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my $Response = shift();
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if($Response =~ /2\d\d/) {
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return(1);
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} else {
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return(0);
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}
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}
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## Liste des serveurs miroir
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sub GetRandomMirror() {
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my @Mirrors = (
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"http://xplanet.arculeo.com/clouds_2048.jpg",
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"http://xplanet.sourceforge.net/clouds/clouds_2048.jpg",
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"http://www.ruwenzori.net/earth/clouds_2048.jpg",
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"http://xplanet.dyndns.org/clouds/clouds_2048.jpg",
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"http://userpage.fu-berlin.de/~jml/clouds_2048.jpg",
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"http://userpage.fu-berlin.de/~jml/clouds_4096.jpg",
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"http://php.nctu.edu.tw/~ijliao/clouds_2048.jpg",
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"http://home.megapass.co.kr/~gitto88/cloud_data/clouds_2048.jpg",
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"http://home.megapass.co.kr/~holywatr/cloud_data/clouds_2048.jpg",
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"ftp://ftp.iastate.edu/pub/xplanet/clouds_2048.jpg",
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"http://xplanet.explore-the-world.net/clouds_2048.jpg",
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"ftp://mirror.pacific.net.au/xplanet/clouds_2048.jpg",
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"http://www.narrabri.atnf.csiro.au/operations/NASA/clouds_2048.jpg",
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);
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return $Mirrors[rand scalar(@Mirrors)];
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}
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