....................................../////.===Shadow-Here===./////................................................ > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < ------------------------------------------------------------------------------------------------------------------- /////////////////////////////////////////////////////////////////////////////////////////////////////////////////// RIFF¤ WEBPVP8 ˜ ðÑ *ôô>‘HŸK¥¤"§£±¨àð enü¹%½_F‘åè¿2ºQú³íªú`N¿­3ÿƒügµJžaÿ¯ÿ°~¼ÎùnúîÞÖô•òíôÁÉß®Sm¥Ü/ ‡ó˜f£Ùà<˜„xëJ¢Ù€SO3x<ªÔ©4¿+ç¶A`q@Ì“Úñè™ÍÿJÌ´ª-˜ÆtÊÛL]Ïq*‘Ý”ì#ŸÌÏãY]@ê`¿ /ªfkØB4·®£ó z—Üw¥Pxù–ÞLШKÇN¾AkÙTf½è'‰g gÆv›Øuh~ a˜Z— ïj*á¥t d£“uÒ ¨`K˜¹ßþ]b>˜]_ÏÔ6W—è2r4x•íÖ…"ƒÖNîä!¦å Ú}ýxGøÌ —@ ;ÆÚŠ=ɾ1ý8lªË¥ô ^yf®Œ¢u&2©nÙÇ›ñÂñŒ³ aPo['½»øFùà­+4ê“$!lövlüÞ=;N®3ð‚õ›DÉKòÞ>ÄÍ ¥ˆuߤ#ˆ$6ù™¥îŠ‡y’ÍB¼ çxÛ;X"WL£R÷͝*ó-¶Zu}º.s¸sšXqù–DþÿvªhüïwyŸ ¯é³lÀ:KCûÄ£Ëá\…­ ~—ýóî ¼ûûÜTÓüÇy…ŽÆvc»¾×U ñ¸žþоP÷¦ó:Ò¨¨5;Ð#&#ÖúñläÿÁœ GxÉ­/ñ‡áQðìYÉtÒwŽ¼GÔ´zàÒò ð*ëzƒ•4~H]Ø‹f ñÓÈñ`NåWçs'ÆÏW^ø¹!XžµmQ5ÃËoLœÎ: ÞËÍ¥J ù…î èo£ßPÎñ¶ž8.Œ]ʵ~5›ÙË-ù*8ÙÖß±~ ©¹rÓê‚j¶d¸{^Q'˜±Crß ÚH—#¥¥QlÀ×ëã‡DÜ«èî þ&Çæžî;ŽÏºò6ÒLÃXy&ZŒ'j‚¢Ù€IßÚù+–MGi‰*jE€‘JcÜ ÓÌ EÏÚj]o˜ Þr <¾U ûŪæÍ/šÝH¥˜b”¼ ÁñßX GP›ï2›4WŠÏà×£…íÓk†¦H·ÅíMh–*nó÷à]ÁjCº€b7<ب‹¨5車bp2:Á[UªM„QŒçiNMa#<5›áËó¸HýÊ"…×Éw¹¦ì2º–x<›»a±¸3Weü®FÝ⑱ö–î–³|LPÈ~çð~Çå‡|º kD¢µÏàÆAI %1À% ¹Ò – ”ϝS¦‰4&¶£°à Öý”û_Ò Áw°A«Å€?mÇÛgHÉ/8)á¾ÛìáöŽP í¨PŸNÙµº¦‡§Ùš"ÿ«>+ªÕ`Ê÷‡‚ß Õû˜þãÇ-PÍ.¾XV‘€ dÜ"þ4¹ ±Oú‘©t¥¦FªÄÃÄ•b‚znýu½—#cDs˜ÃiÑOˆñ×QO=*IAÊ,¶ŽZƒ;‡wøXè%EÐk:F±Ú” .Ѽ+Áu&Ç`."pÈÉw o&¿dE6‘’EqTuK@Ì¥ã™À(Êk(h‰,H}RÀIXÛš3µ1©_OqÚÒJAñ$ÊÙÜ;D3çŒ[þùœh¬Ã³™ö6ç†NY".Ú‰ï[ªŸŒ '²Ð öø_¨ÂÉ9u鶳ÒŠõTàîMØ#û¯gN‡bÙ놚X„ö …ÉeüÌ^J ‹€.œ$Æ)βÄeæW#óüßĺŸ€ ÀzwV 9oä»f4V*uB «Ë†¹ì¯žR霓æHXa=&“I4K;¯ç‹h×·"UŠ~<•â•ªVêª&ÍSÃÆÅ?ÔqÎ*mTM ˜›µwêd#[C¡©§‘D<©àb†–ÁœøvH/,í:¯( ²£|4-„Æövv„Yͼ™^Á$ˆ„¢Û[6yB.åH*V¨æ?$=˜Ñ€•î¦ñ·­(VlŸ‘ nÀt8W÷´Bûba?q9ú¶Xƒl«ÿ\ù¶’þòUÐj/õ¢Ìµ³g$ƒÎR!¸»|Oߍë’BhîÚÑ¢ñåŒJ„®„£2Ð3•ô02Nt…!£Í]Ïc½Qÿ?ˆ<&ÃA¾Ú,JˆijÌ#5yz„‰Î|ÊŽ5QÏ:‹ÐaóVÔxW—CpeÏzÐïíçôÿÅ_[hãsÐ_/ŽTÝ?BîˆííV$<¿i>²F¬_Eß¿ †bÊŒº­ÿ®Z H“C}”¬,Mp ý/Bá£w>˜YV°aƒúh+cŠ- r/[%|üUMHäQ°X»|û/@|°¥Ð !BÔ Ç¢Ä©š+Õì D«7ìN¶ŽðÔ " ƶ’ÖçtA‰Û×}{tþz­¾GÍ›k¹OEJR$ Â׃ «ëÁ"oÉôž$oUK(Ä)Ãz³Ê-‹êN[Ò3Œñbï8P 4ƒ×q¢bo|?<ÛX¬òÄÍ°L–±›(™ûG?ýË©ÚÄ–ÂDØÐ_Ç¡ô ¾–ÄÏø ×e8Ë©$ÄF¹Å‹ì[©óìl:F¾f´‹‹Xì²ï®\¬ôùƒ ÿat¥óèÒùHß0äe‚;ü×h:ÆWðHž=Ã8骣"kœ'Y?³}Tûè€>?0l›e1Lòñ„aæKÆw…hÖŠùW…ÈÆÄ0ši·›[pcwËþñiêíY/~-Á5˜!¿†A›™Mÿþ(±“t@â“ö2­´TG5yé]çå僳 .·ÍïçÝ7UÚ±Ð/Nè»,_Ï ùdj7\ï Wì4›„»c¸àešg#ÒÊ⥭áØo5‘?ÌdÝô¯ ¹kzsƒ=´#ëÉK›Ø´±-¥eW?‡çßtòTã…$Ý+qÿ±ƒ÷_3Ô¥í÷:æ–ž<·Ö‡‰Å¢ š‡%Ô—utÌÈìðžgÖÀz²À—ï÷Óîäõ{K'´È÷³yaÏÁjƒô}ž§®æÊydÕÈë5¯èˆõvÕ©ã*çD„ “z„Ó‡^^xÂ3M§A´JG‚öï 3W'ˆ.OvXè¡ÊÕª?5º7†˜(˜Ç¶#çê’¶!ÌdZK§æ 0fãaN]òY³RV ™î$®K2R¨`W!1Ôó\;Ý ýB%qæK•&ÓÈe9È0êI±žeŸß -ú@žQr¦ ö4»M¼Áè¹µmw 9 EÆE_°2ó„ŸXKWÁ×Hóì^´²GѝF©óäR†¦‰ç"V»eØ<3ùd3ÿÚ¤Žú“Gi" —‘_ÙËÎ~Üö¯¥½Î»üŸEÚŽåmÞþí ;ÞólËΦMzA"Âf(´òá;Éï(/7½ûñÌ­cïÕçлþÝz¾-ÍvÑ“pH­–ðÓj$¸Äû¤‚‘ãUBË-n“2åPkS5&‹Â|+g^œ®Ì͆d!OïäîU«c;{Û!ÅŽ«ëZ9Ókóˆ]¯ƒ›né `ÇÒ+tÆš (ØKá¾—=3œ®•vuMñg²\ï Ec€ 05±d™‡×iÇ×›UúvÌ¢£Èþ¡ÕØô¶ßÎA"ß±#Ö²ˆÊŸ¦*Ä~ij|àø.-¼'»Ú¥£h ofº¦‡VsR=N½„Î v˜Z*SÌ{=jÑB‹tê…;’HžH¯8–îDù8ñ¢|Q•bÛçš–‹m³“ê¨ åÏ^m¬Žãþ©ïêO‡½6] µÆ„Ooòü ²x}N¦Ë3ïé¿»€›HA˜m%çÞ/¿í7Fø“‹léUk)É°Œµ8Q8›:ÀŠeT*šõ~ôڝG6 ¢}`ùH­–”¡k ‰P1>š†®9z11!X wKfmÁ¦xÑ,N1Q”–æB¶M…ÒÃv6SMˆhU¬ÊPŽï‘öj=·CŒ¯u¹ƒVIЃsx4’ömÛýc塶7ßŠß 57^\wÒÐÆ k§h,Œý î«q^R½3]J¸ÇðN ‚çU¬ôº^Áì} ³f©Õœ§ˆã:FÄÈ‚é(€™?àýÓüè1Gô£¼éj‚OÅñ  #>×—ßtà 0G¥Åa뀐kßhc™À_ÉñÞ#±)GD" YîäË-ÿÙ̪ ¹™a¯´¢E\ÝÒö‚;™„ë]_ p8‰o¡ñ+^÷ 3‘'dT4œŽ ðVë½° :¬víÑ«£tßÚS-3¶“þ2 †üüʨòrš¹M{É_¤`Û¨0ìjœøJ‡:÷ÃáZ˜†@GP&œÑDGÏs¡þ¦þDGú‘1Yá9Ôþ¼ ûø…§÷8&–ÜÑnÄ_m®^üÆ`;ÉVÁJ£?â€-ßê}suÍ2sõA NÌúA磸‘îÿÚ»ƒìö·á¿±tÑÐ"Tÿü˜[@/äj¬€uüªìù¥Ý˜á8Ý´sõj 8@rˆð äþZÇD®ÿUÏ2ùôõrBzÆÏÞž>Ì™xœ“ wiÎ×7_… ¸ \#€MɁV¶¥üÕÿPÔ9Z‡ø§É8#H:ƒ5ÀÝå9ÍIŒ5åKÙŠ÷qÄ>1AÈøžj"µÂд/ªnÀ qªã}"iŸBå˜ÓÛŽ¦…&ݧ;G@—³b¯“•"´4í¨ôM¨åñC‹ïùÉó¯ÓsSH2Ý@ßáM‡ˆKÀªÛUeø/4\gnm¥‹ŸŒ qÄ b9ÞwÒNÏ_4Ég³ú=܆‚´ •â¥õeíþkjz>éÚyU«Íӝ݃6"8/ø{=Ô¢»G¥ äUw°W«,ô—¿ãㆅү¢³xŠUû™yŒ (øSópÐ 9\åTâ»—*oG$/×ÍT†Y¿1¤Þ¢_‡ ¼ „±ÍçèSaÓ 3ÛMÁBkxs‰’R/¡¤ˆÙçª(*õ„üXÌ´ƒ E§´¬EF"Ù”R/ÐNyÆÂ^°?™6¡œïJ·±$§?º>ÖüœcNÌù¯G ‹ñ2ŠBB„^·úìaz¨k:#¨Æ¨8LÎõލ£^§S&cŒÐU€ü(‡F±Š¼&P>8ÙÁ ‰ p5?0ÊƃZl¸aô š¼¡}gÿ¶zÆC²¹¬ÎÖG*HB¡O<º2#ñŒAƒ–¡B˜´É$¥›É:FÀÔx¾u?XÜÏÓvN©RS{2ʈãk9rmP¼Qq̳ è¼ÐFׄ^¡Öì fE“F4A…!ì/…¦Lƒ… … $%´¾yã@CI¬ á—3PþBÏNÿ<ý°4Ü ËÃ#ØÍ~âW«rEñw‹eùMMHß²`¬Öó½íf³:‹k˜¯÷}Z!ã¿<¥,\#öµÀ¯aÒNÆIé,Ћ–lŽ#Àæ9ÀÒS·I’½-Ïp Äz¤Š Â* ­íÄ9­< h>׍3ZkËU¹§˜ŒŠ±f­’¤º³Q ÏB?‹#µíÃ¥®@(Gs«†vI¥Mµ‹Á©e~2ú³ÁP4ìÕi‚²Ê^ö@-DþÓàlÜOÍ]n"µã:žpsŽ¢:! Aõ.ç~ÓBûH÷JCÌ]õVƒd «ú´QÙEA–¯¯Œ!.ˆˆëQ±ù œ·Ì!Õâ )ùL„ÅÀlÚè5@B…o´Æ¸XÓ&Û…O«˜”_#‡ƒ„ûÈt!¤ÁÏ›ÎÝŠ?c9 â\>lÓÁVÄÑ™£eØY]:fÝ–—ù+p{™ðè û³”g±OƒÚSù£áÁÊ„ä,ï7š²G ÕÌBk)~ÑiCµ|h#u¤¶îK¨² #²vݯGãeÖ϶ú…¾múÀ¶þÔñ‚Š9'^($¤§ò “š½{éúp÷J›ušS¹áªCÂubÃH9™D™/ZöØÁ‡¦ÝÙŸ·kð*_”.C‹{áXó€‡c¡c€§/šò/&éš÷,àéJþ‰X›fµ“C¨œ®r¬"kL‰Â_q…Z–.ÉL~O µ›zn‚¹À¦Öª7\àHµšÖ %»ÇníV[¥*Õ;ƒ#½¾HK-ÖIÊdÏEÚ#=o÷Óò³´Š: Ç?{¾+9›–‘OEáU·S€˜j"ÄaÜ ŒÛWt› á–c#a»pÔZÞdŽtWê=9éöÊ¢µ~ ë ;Öe‡Œ®:bî3±ýê¢wà¼îpêñ¹¾4 zc¾ðÖÿzdêŒÑÒŝÀ‰s6¤í³ÎÙB¿OZ”+F¤á‡3@Ñëäg©·Ž ˆèª<ù@É{&S„œÕúÀA)‰h:YÀ5^ÂÓŒ°õäU\ ùËÍû#²?Xe¬tu‰^zÒÔãë¼ÛWtEtû …‚g¶Úüâî*moGè¨7%u!]PhÏd™Ý%Îx: VÒ¦ôÊD3ÀŽKÛËãvÆî…N¯ä>Eró–ð`5 Œ%u5XkñÌ*NU%¶áœÊ:Qÿú»“úzyÏ6å-၇¾ ´ ÒÊ]y žO‘w2Äøæ…H’²f±ÎÇ.ª|¥'gîV•Ü .̘¯€šòü¤U~Ù†*¢!?ò wý,}´°ÔÞnïoKq5µb!áÓ3"vAßH¡³¡·G(ÐÎ0Îò¼MG!/ài®@—¬04*`…«é8ªøøló“ˆÊ”èù¤…ßÊoÿé'ËuÌÖ5×È¡§ˆˆfŽë9}hìâ_!!¯  B&Ëö¶‰ÀAÙNVŸ Wh›¸®XÑJì¨ú“¿÷3uj²˜¨ÍÎìë±aúŠÝå¯ð*Ó¨ôJ“yºØ)m°WýOè68†ŸÏ2—‰Ïüꪫٚ¥‹l1 ø ÏÄFjêµvÌbü¦èÝx:X±¢H=MÐß—,ˆÉÇ´(9ú¾^ÅÚ4¿m‡$âX‘å%(AlZo@½¨UOÌÕ”1ø¸jÎÀÃÃ_ µ‘Ü.œº¦Ut: Æï’!=¯uwû#,“pþÇúŒø(é@?³ü¥‘Mo §—s@Œ#)§ŒùkL}NOÆêA›¸~r½¼ÙA—HJ«eˆÖ´*¡ÓpÌŸö.m<-"³ûÈ$¬_6­åf£ïÚâj1y§ÕJ½@dÞÁr&Í\Z%D£Íñ·AZ Û³øüd/ªAi†/Й~  ‡âĮҮÏh§°b—›Û«mJžòG'[ÈYýŒ¦9psl ýÁ ®±f¦x,‰½tN ‚Xª9 ÙÖH.«Lo0×?͹m¡å†Ѽ+›2ƒF ±Ê8 7Hցϓ²Æ–m9…òŸï]Â1äN†VLâCˆU .ÿ‰Ts +ÅÎx(%¦u]6AF Š ØF鈄‘ |¢¶c±soŒ/t[a¾–û:s·`i햍ê›ËchÈ…8ßÀUÜewŒðNOƒõD%q#éû\9¤x¹&UE×G¥ Í—™$ð E6-‡¼!ýpãÔM˜ Âsìe¯ñµK¢Ç¡ùôléœ4Ö£”À Š®Ðc ^¨À}ÙËŸ§›ºê{ÊuÉC ×Sr€¤’fÉ*j!úÓ’Gsùìoîßîn%ò· àc Wp÷$¨˜)û»H ×8ŽÒ€Zj¤3ÀÙºY'Ql¦py{-6íÔCeiØp‘‡XÊîÆUߢ܂ž£Xé¼Y8þ©ëgñß}é.ÎógÒ„ÃØËø¯»™§Xýy M%@NŠ À(~áÐvu7&•,Ù˜ó€uP‡^^®=_E„jt’ 403WebShell
403Webshell
Server IP : 41.207.40.59  /  Your IP : 216.73.216.58
Web Server : Apache/2.4.52 (Ubuntu)
System : Linux srv-prod 5.15.0-157-generic #167-Ubuntu SMP Wed Sep 17 21:35:53 UTC 2025 x86_64
User : www-data ( 33)
PHP Version : 8.3.26
Disable Function : NONE
MySQL : OFF  |  cURL : ON  |  WGET : ON  |  Perl : ON  |  Python : OFF  |  Sudo : ON  |  Pkexec : ON
Directory :  /var/www/html/formation/repository/dropbox/

Upload File :
current_dir [ Writeable ] document_root [ Writeable ]

 

Command :

[ Back ]     

Current File : /var/www/html/formation/repository/dropbox/lib.php
<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

/**
 * This plugin is used to access user's dropbox files
 *
 * @since Moodle 2.0
 * @package    repository_dropbox
 * @copyright  2012 Marina Glancy
 * @copyright  2010 Dongsheng Cai {@link http://dongsheng.org}
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
require_once($CFG->dirroot . '/repository/lib.php');

/**
 * Repository to access Dropbox files
 *
 * @package    repository_dropbox
 * @copyright  2010 Dongsheng Cai
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
class repository_dropbox extends repository {
    /**
     * @var dropbox     The instance of dropbox client.
     */
    private $dropbox;

    /**
     * @var int         The maximum file size to cache in the moodle filepool.
     */
    public $cachelimit = null;

    /**
     * Constructor of dropbox plugin.
     *
     * @inheritDocs
     */
    public function __construct($repositoryid, $context = SYSCONTEXTID, $options = []) {
        $options['page'] = optional_param('p', 1, PARAM_INT);
        parent::__construct($repositoryid, $context, $options);

        $returnurl = new moodle_url('/repository/repository_callback.php', [
                'callback'  => 'yes',
                'repo_id'   => $repositoryid,
                'sesskey'   => sesskey(),
            ]);

        // Create the dropbox API instance.
        $issuer = \core\oauth2\api::get_issuer(get_config('dropbox', 'dropbox_issuerid'));
        $this->dropbox = new repository_dropbox\dropbox($issuer, $returnurl);
    }

    /**
     * Repository method to serve the referenced file.
     *
     * @inheritDocs
     */
    public function send_file($storedfile, $lifetime=null , $filter=0, $forcedownload=false, ?array $options = null) {
        $reference = $this->unpack_reference($storedfile->get_reference());

        $maxcachesize = $this->max_cache_bytes();
        if (empty($maxcachesize)) {
            // Always cache the file, regardless of size.
            $cachefile = true;
        } else {
            // Size available. Only cache if it is under maxcachesize.
            $cachefile = $storedfile->get_filesize() < $maxcachesize;
        }

        if (!$cachefile) {
            \core\session\manager::write_close();
            header('Location: ' . $this->get_file_download_link($reference->url));
            die;
        }

        try {
            $this->import_external_file_contents($storedfile, $this->max_cache_bytes());
            if (!is_array($options)) {
                $options = array();
            }
            $options['sendcachedexternalfile'] = true;
            \core\session\manager::write_close();
            send_stored_file($storedfile, $lifetime, $filter, $forcedownload, $options);
        } catch (moodle_exception $e) {
            // Redirect to Dropbox, it will show the error.
            // Note: We redirect to Dropbox shared link, not to the download link here!
            \core\session\manager::write_close();
            header('Location: ' . $reference->url);
            die;
        }
    }

    /**
     * Return human readable reference information.
     * {@link stored_file::get_reference()}
     *
     * @inheritDocs
     */
    public function get_reference_details($reference, $filestatus = 0) {
        global $USER;
        $ref  = unserialize($reference);
        $detailsprefix = $this->get_name();
        if (isset($ref->userid) && $ref->userid != $USER->id && isset($ref->username)) {
            $detailsprefix .= ' ('.$ref->username.')';
        }
        $details = $detailsprefix;
        if (isset($ref->path)) {
            $details .= ': '. $ref->path;
        }
        if (isset($ref->path) && !$filestatus) {
            // Indicate this is from dropbox with path.
            return $details;
        } else {
            if (isset($ref->url)) {
                $details = $detailsprefix. ': '. $ref->url;
            }
            return get_string('lostsource', 'repository', $details);
        }
    }

    /**
     * Cache file from external repository by reference.
     * {@link repository::get_file_reference()}
     * {@link repository::get_file()}
     * Invoked at MOODLE/repository/repository_ajax.php.
     *
     * @inheritDocs
     */
    public function cache_file_by_reference($reference, $storedfile) {
        try {
            $this->import_external_file_contents($storedfile, $this->max_cache_bytes());
        } catch (Exception $e) {
            // Cache failure should not cause a fatal error. This is only a nice-to-have feature.
        }
    }

    /**
     * Return the source information.
     *
     * The result of the function is stored in files.source field. It may be analysed
     * when the source file is lost or repository may use it to display human-readable
     * location of reference original.
     *
     * This method is called when file is picked for the first time only. When file
     * (either copy or a reference) is already in moodle and it is being picked
     * again to another file area (also as a copy or as a reference), the value of
     * files.source is copied.
     *
     * @inheritDocs
     */
    public function get_file_source_info($source) {
        global $USER;
        return 'Dropbox ('.fullname($USER).'): ' . $source;
    }

    /**
     * Prepare file reference information.
     *
     * @inheritDocs
     */
    public function get_file_reference($source) {
        global $USER;
        $reference = new stdClass;
        $reference->userid = $USER->id;
        $reference->username = fullname($USER);
        $reference->path = $source;

        // Determine whether we are downloading the file, or should use a file reference.
        $usefilereference = optional_param('usefilereference', false, PARAM_BOOL);
        if ($usefilereference) {
            if ($data = $this->dropbox->get_file_share_info($source)) {
                $reference = (object) array_merge((array) $data, (array) $reference);
            }
        }

        return serialize($reference);
    }

    /**
     * Return file URL for external link.
     *
     * @inheritDocs
     */
    public function get_link($reference) {
        $unpacked = $this->unpack_reference($reference);

        return $this->get_file_download_link($unpacked->url);
    }

    /**
     * Downloads a file from external repository and saves it in temp dir.
     *
     * @inheritDocs
     */
    public function get_file($reference, $saveas = '') {
        $unpacked = $this->unpack_reference($reference);

        // This is a shared link, and hopefully it is still active.
        $downloadlink = $this->get_file_download_link($unpacked->url);

        $saveas = $this->prepare_file($saveas);
        file_put_contents($saveas, fopen($downloadlink, 'r'));

        return ['path' => $saveas];
    }

    /**
     * Dropbox plugin supports all kinds of files.
     *
     * @inheritDocs
     */
    public function supported_filetypes() {
        return '*';
    }

    /**
     * User cannot use the external link to dropbox.
     *
     * @inheritDocs
     */
    public function supported_returntypes() {
        return FILE_INTERNAL | FILE_REFERENCE | FILE_EXTERNAL;
    }

    /**
     * Get dropbox files.
     *
     * @inheritDocs
     */
    public function get_listing($path = '', $page = '1') {
        if (empty($path) || $path == '/') {
            $path = '';
        } else {
            $path = file_correct_filepath($path);
        }

        $list = [
                'list'      => [],
                'manage'    => 'https://www.dropbox.com/home',
                'logouturl' => 'https://www.dropbox.com/logout',
                'message'   => get_string('logoutdesc', 'repository_dropbox'),
                'dynload'   => true,
                'path'      => $this->process_breadcrumbs($path),
            ];

        // Note - we deliberately do not catch the coding exceptions here.
        try {
            $result = $this->dropbox->get_listing($path);
        } catch (\repository_dropbox\authentication_exception $e) {
            // The token has expired.
            return $this->print_login();
        } catch (\repository_dropbox\dropbox_exception $e) {
            // There was some other form of non-coding failure.
            // This could be a rate limit, or it could be a server-side error.
            // Just return early instead.
            return $list;
        }

        if (!is_object($result) || empty($result)) {
            return $list;
        }

        if (empty($result->entries) or !is_array($result->entries)) {
            return $list;
        }

        $list['list'] = $this->process_entries($result->entries);
        return $list;
    }

    /**
     * Get dropbox files in the specified path.
     *
     * @param   string      $query      The search query
     * @param   int         $page       The page number
     * @return  array
     */
    public function search($query, $page = 0) {
        $list = [
                'list'      => [],
                'manage'    => 'https://www.dropbox.com/home',
                'logouturl' => 'https://www.dropbox.com/logout',
                'message'   => get_string('logoutdesc', 'repository_dropbox'),
                'dynload'   => true,
            ];

        // Note - we deliberately do not catch the coding exceptions here.
        try {
            $result = $this->dropbox->search($query);
        } catch (\repository_dropbox\authentication_exception $e) {
            // The token has expired.
            return $this->print_login();
        } catch (\repository_dropbox\dropbox_exception $e) {
            // There was some other form of non-coding failure.
            // This could be a rate limit, or it could be a server-side error.
            // Just return early instead.
            return $list;
        }

        if (!is_object($result) || empty($result)) {
            return $list;
        }

        if (empty($result->matches) or !is_array($result->matches)) {
            return $list;
        }

        $list['list'] = $this->process_entries($result->matches);
        return $list;
    }

    /**
     * Displays a thumbnail for current user's dropbox file.
     *
     * @inheritDocs
     */
    public function send_thumbnail($source) {
        $content = $this->dropbox->get_thumbnail($source);

        // Set 30 days lifetime for the image.
        // If the image is changed in dropbox it will have different revision number and URL will be different.
        // It is completely safe to cache the thumbnail in the browser for a long time.
        send_file($content, basename($source), 30 * DAYSECS, 0, true);
    }

    /**
     * Fixes references in DB that contains user credentials.
     *
     * @param   string      $packed     Content of DB field files_reference.reference
     * @return  string                  New serialized reference
     */
    protected function fix_old_style_reference($packed) {
        $ref = unserialize($packed);
        $ref = $this->dropbox->get_file_share_info($ref->path);
        if (!$ref || empty($ref->url)) {
            // Some error occurred, do not fix reference for now.
            return $packed;
        }

        $newreference = serialize($ref);
        if ($newreference !== $packed) {
            // We need to update references in the database.
            global $DB;
            $params = array(
                'newreference'  => $newreference,
                'newhash'       => sha1($newreference),
                'reference'     => $packed,
                'hash'          => sha1($packed),
                'repoid'        => $this->id,
            );
            $refid = $DB->get_field_sql('SELECT id FROM {files_reference}
                WHERE reference = :reference AND referencehash = :hash
                AND repositoryid = :repoid', $params);
            if (!$refid) {
                return $newreference;
            }

            $existingrefid = $DB->get_field_sql('SELECT id FROM {files_reference}
                    WHERE reference = :newreference AND referencehash = :newhash
                    AND repositoryid = :repoid', $params);
            if ($existingrefid) {
                // The same reference already exists, we unlink all files from it,
                // link them to the current reference and remove the old one.
                $DB->execute('UPDATE {files} SET referencefileid = :refid
                    WHERE referencefileid = :existingrefid',
                    array('refid' => $refid, 'existingrefid' => $existingrefid));
                $DB->delete_records('files_reference', array('id' => $existingrefid));
            }

            // Update the reference.
            $params['refid'] = $refid;
            $DB->execute('UPDATE {files_reference}
                SET reference = :newreference, referencehash = :newhash
                WHERE id = :refid', $params);
        }
        return $newreference;
    }

    /**
     * Unpack the supplied serialized reference, fixing it if required.
     *
     * @param   string      $packed     The packed reference
     * @return  object                  The unpacked reference
     */
    protected function unpack_reference($packed) {
        $reference = unserialize($packed);
        if (empty($reference->url)) {
            // The reference is missing some information. Attempt to update it.
            return unserialize($this->fix_old_style_reference($packed));
        }

        return $reference;
    }

    /**
     * Converts a URL received from dropbox API function 'shares' into URL that
     * can be used to download/access file directly
     *
     * @param string $sharedurl
     * @return string
     */
    protected function get_file_download_link($sharedurl) {
        $url = new \moodle_url($sharedurl);
        $url->param('dl', 1);

        return $url->out(false);
    }

    /**
     * Logout from dropbox.
     *
     * @inheritDocs
     */
    public function logout() {
        $this->dropbox->logout();

        return $this->print_login();
    }

    /**
     * Check if the dropbox is logged in via the oauth process.
     *
     * @inheritDocs
     */
    public function check_login() {
        return $this->dropbox->is_logged_in();
    }

    /**
     * Generate dropbox login url.
     *
     * @inheritDocs
     */
    public function print_login() {
        $url = $this->dropbox->get_login_url();
        if ($this->options['ajax']) {
            $ret = array();
            $btn = new \stdClass();
            $btn->type = 'popup';
            $btn->url = $url->out(false);
            $ret['login'] = array($btn);
            return $ret;
        } else {
            echo html_writer::link($url, get_string('login', 'repository'), array('target' => '_blank'));
        }
    }

    /**
     * Request access token.
     *
     * @inheritDocs
     */
    public function callback() {
        $this->dropbox->callback();
    }

    /**
     * Caches all references to Dropbox files in moodle filepool.
     *
     * Invoked by {@link repository_dropbox_cron()}. Only files smaller than
     * {@link repository_dropbox::max_cache_bytes()} and only files which
     * synchronisation timeout have not expired are cached.
     *
     * @inheritDocs
     */
    public function cron() {
        $fs = get_file_storage();
        $files = $fs->get_external_files($this->id);
        $fetchedreferences = [];
        foreach ($files as $file) {
            if (isset($fetchedreferences[$file->get_referencefileid()])) {
                continue;
            }
            try {
                // This call will cache all files that are smaller than max_cache_bytes()
                // and synchronise file size of all others.
                $this->import_external_file_contents($file, $this->max_cache_bytes());
                $fetchedreferences[$file->get_referencefileid()] = true;
            } catch (moodle_exception $e) {
                // If an exception is thrown, just continue. This is only a pre-fetch to help speed up general use.
            }
        }
    }

    /**
     * Add Plugin settings input to Moodle form.
     *
     * @inheritDocs
     */
    public static function type_config_form($mform, $classname = 'repository') {
        parent::type_config_form($mform);
        $options = [];
        $issuers = \core\oauth2\api::get_all_issuers();
        foreach ($issuers as $issuer) {
            $options[$issuer->get('id')] = s($issuer->get('name'));
        }
        $strrequired = get_string('required');
        $mform->addElement('select', 'dropbox_issuerid', get_string('issuer', 'repository_dropbox'), $options);
        $mform->addHelpButton('dropbox_issuerid', 'issuer', 'repository_dropbox');
        $mform->addRule('dropbox_issuerid', $strrequired, 'required', null, 'client');
        $mform->addElement('text', 'dropbox_cachelimit', get_string('cachelimit', 'repository_dropbox'), array('size' => '40'));
        $mform->addRule('dropbox_cachelimit', null, 'numeric', null, 'client');
        $mform->setType('dropbox_cachelimit', PARAM_INT);
        $mform->addElement('static', 'dropbox_cachelimit_info', '',  get_string('cachelimit_info', 'repository_dropbox'));

    }

    /**
     * Set options.
     *
     * @param   array   $options
     * @return  mixed
     */
    public function set_option($options = []) {
        if (!empty($options['dropbox_issuerid'])) {
            set_config('dropbox_issuerid', trim($options['dropbox_issuerid']), 'dropbox');
            unset($options['dropbox_issuerid']);
        }
        if (!empty($options['dropbox_cachelimit'])) {
            $this->cachelimit = (int) trim($options['dropbox_cachelimit']);
            set_config('dropbox_cachelimit', $this->cachelimit, 'dropbox');
            unset($options['dropbox_cachelimit']);
        }

        return parent::set_option($options);
    }

    /**
     * Get dropbox options
     * @param string $config
     * @return mixed
     */
    public function get_option($config = '') {
        if ($config === 'dropbox_issuerid') {
            return trim(get_config('dropbox', 'dropbox_issuerid'));
        } else if ($config === 'dropbox_cachelimit') {
            return $this->max_cache_bytes();
        } else {
            $options = parent::get_option();
            $options['dropbox_issuerid'] = trim(get_config('dropbox', 'dropbox_issuerid'));
            $options['dropbox_cachelimit'] = $this->max_cache_bytes();
        }

        return $options;
    }

    /**
     * Return the OAuth 2 Redirect URI.
     *
     * @return  moodle_url
     */
    public static function get_oauth2callbackurl() {
        global $CFG;

        return new moodle_url('/admin/oauth2callback.php');
    }

    /**
     * Option names of dropbox plugin.
     *
     * @inheritDocs
     */
    public static function get_type_option_names() {
        return [
                'dropbox_issuerid',
                'pluginname',
                'dropbox_cachelimit',
            ];
    }

    /**
     * Performs synchronisation of an external file if the previous one has expired.
     *
     * This function must be implemented for external repositories supporting
     * FILE_REFERENCE, it is called for existing aliases when their filesize,
     * contenthash or timemodified are requested. It is not called for internal
     * repositories (see {@link repository::has_moodle_files()}), references to
     * internal files are updated immediately when source is modified.
     *
     * Referenced files may optionally keep their content in Moodle filepool (for
     * thumbnail generation or to be able to serve cached copy). In this
     * case both contenthash and filesize need to be synchronized. Otherwise repositories
     * should use contenthash of empty file and correct filesize in bytes.
     *
     * Note that this function may be run for EACH file that needs to be synchronised at the
     * moment. If anything is being downloaded or requested from external sources there
     * should be a small timeout. The synchronisation is performed to update the size of
     * the file and/or to update image and re-generated image preview. There is nothing
     * fatal if syncronisation fails but it is fatal if syncronisation takes too long
     * and hangs the script generating a page.
     *
     * Note: If you wish to call $file->get_filesize(), $file->get_contenthash() or
     * $file->get_timemodified() make sure that recursion does not happen.
     *
     * Called from {@link stored_file::sync_external_file()}
     *
     * @inheritDocs
     */
    public function sync_reference(stored_file $file) {
        global $CFG;

        if ($file->get_referencelastsync() + DAYSECS > time()) {
            // Only synchronise once per day.
            return false;
        }

        $reference = $this->unpack_reference($file->get_reference());
        if (!isset($reference->url)) {
            // The URL to sync with is missing.
            return false;
        }

        $c = new curl;
        $url = $this->get_file_download_link($reference->url);
        if (file_extension_in_typegroup($reference->path, 'web_image')) {
            $saveas = $this->prepare_file('');
            try {
                $result = $c->download_one($url, [], [
                        'filepath' => $saveas,
                        'timeout' => $CFG->repositorysyncimagetimeout,
                        'followlocation' => true,
                    ]);
                $info = $c->get_info();
                if ($result === true && isset($info['http_code']) && $info['http_code'] == 200) {
                    $file->set_synchronised_content_from_file($saveas);
                    return true;
                }
            } catch (Exception $e) {
                // IF the download_one fails, we will attempt to download
                // again with get() anyway.
            }
        }

        $c->get($url, null, array('timeout' => $CFG->repositorysyncimagetimeout, 'followlocation' => true, 'nobody' => true));
        $info = $c->get_info();
        if (isset($info['http_code']) && $info['http_code'] == 200 &&
                array_key_exists('download_content_length', $info) &&
                $info['download_content_length'] >= 0) {
            $filesize = (int)$info['download_content_length'];
            $file->set_synchronized(null, $filesize);
            return true;
        }
        $file->set_missingsource();
        return true;
    }

    /**
     * Process a standard entries list.
     *
     * @param   array       $entries    The list of entries returned from the API
     * @return  array                   The manipulated entries for display in the file picker
     */
    protected function process_entries(array $entries) {
        global $OUTPUT;

        $dirslist   = [];
        $fileslist  = [];
        foreach ($entries as $entry) {
            $entrydata = $entry;
            if (isset($entrydata->metadata)) {
                // If this is metadata, fetch the metadata content.
                // We only use the consistent parts of the file, folder, and metadata.
                $entrydata = $entrydata->metadata;
            }

            // Due to a change in the api, the actual content is in a nested metadata tree.
            if ($entrydata->{".tag"} == "metadata" && isset($entrydata->metadata)) {
                $entrydata = $entrydata->metadata;
            }

            if ($entrydata->{".tag"} === "folder") {
                $dirslist[] = [
                        'title'             => $entrydata->name,
                        // Use the display path here rather than lower.
                        // Dropbox is case insensitive but this leads to more accurate breadcrumbs.
                        'path'              => file_correct_filepath($entrydata->path_display),
                        'thumbnail'         => $OUTPUT->image_url(file_folder_icon())->out(false),
                        'thumbnail_height'  => 64,
                        'thumbnail_width'   => 64,
                        'children'          => array(),
                    ];
            } else if ($entrydata->{".tag"} === "file") {
                $fileslist[] = [
                        'title'             => $entrydata->name,
                        // Use the path_lower here to make life easier elsewhere.
                        'source'            => $entrydata->path_lower,
                        'size'              => $entrydata->size,
                        'date'              => strtotime($entrydata->client_modified),
                        'thumbnail'         => $OUTPUT->image_url(file_extension_icon($entrydata->path_lower))->out(false),
                        'realthumbnail'     => $this->get_thumbnail_url($entrydata),
                        'thumbnail_height'  => 64,
                        'thumbnail_width'   => 64,
                    ];
            }
        }

        $fileslist = array_filter($fileslist, array($this, 'filter'));

        return array_merge($dirslist, array_values($fileslist));
    }

    /**
     * Process the breadcrumbs for a listing.
     *
     * @param   string      $path       The path to create breadcrumbs for
     * @return  array
     */
    protected function process_breadcrumbs($path) {
        // Process breadcrumb trail.
        // Note: Dropbox is case insensitive.
        // Without performing an additional API call, it isn't possible to get the path_display.
        // As a result, the path here is the path_lower.
        $breadcrumbs = [
            [
                'path' => '/',
                'name' => get_string('dropbox', 'repository_dropbox'),
            ],
        ];

        $path = rtrim($path, '/');
        $directories = explode('/', $path);
        $pathtodate = '';
        foreach ($directories as $directory) {
            if ($directory === '') {
                continue;
            }
            $pathtodate .= '/' . $directory;
            $breadcrumbs[] = [
                    'path'  => $pathtodate,
                    'name'  => $directory,
                ];
        }

        return $breadcrumbs;
    }

    /**
     * Grab the thumbnail URL for the specified entry.
     *
     * @param   object      $entry      The file entry as retrieved from the API
     * @return  moodle_url
     */
    protected function get_thumbnail_url($entry) {
        if ($this->dropbox->supports_thumbnail($entry)) {
            $thumburl = new moodle_url('/repository/dropbox/thumbnail.php', [
                // The id field in dropbox is unique - no need to specify a revision.
                'source'    => $entry->id,
                'path'      => $entry->path_lower,

                'repo_id'   => $this->id,
                'ctx_id'    => $this->context->id,
            ]);
            return $thumburl->out(false);
        }

        return '';
    }

    /**
     * Returns the maximum size of the Dropbox files to cache in moodle.
     *
     * Note that {@link repository_dropbox::sync_reference()} will try to cache images even
     * when they are bigger in order to generate thumbnails. However there is
     * a small timeout for downloading images for synchronisation and it will
     * probably fail if the image is too big.
     *
     * @return int
     */
    public function max_cache_bytes() {
        if ($this->cachelimit === null) {
            $this->cachelimit = (int) get_config('dropbox', 'dropbox_cachelimit');
        }
        return $this->cachelimit;
    }
}

Youez - 2016 - github.com/yon3zu
LinuXploit