Differential D23151 Diff 63808 extension/content-script.js

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extension/content-script.js

Show All 12 Lines1/*
13 GNU General Public License for more details. 13​ GNU General Public License for more details.
14 14​
15 You should have received a copy of the GNU General Public License 15​ You should have received a copy of the GNU General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>. 16​ along with this program. If not, see <http://www.gnu.org/licenses/>.
17 */ 17​ */
18 18​
19var callbacks = {}; 19​var callbacks = {};
20 20​
21​// from https://stackoverflow.com/questions/105034/create-guid-uuid-in-javascript
22​function generateGuid() {
fvogtUnsubmitted
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generateGuid, otherwise it looks like a getter

fvogt: `generateGuid`, otherwise it looks like a getter
23​ return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) {
24​ var r = Math.random()*16|0, v = c == 'x' ? r : (r&0x3|0x8);
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var -> const

ognarb: var -> const
25​ return v.toString(16);
26​ });
27​}
28​
21function addCallback(subsystem, action, callback) 29​function addCallback(subsystem, action, callback)
22{ 30​{
23 if (!callbacks[subsystem]) { 31​ if (!callbacks[subsystem]) {
24 callbacks[subsystem] = {}; 32​ callbacks[subsystem] = {};
25 } 33​ }
26 callbacks[subsystem][action] = callback; 34​ callbacks[subsystem][action] = callback;
27} 35​}
28 36​
Show All 28 Lines64 if (items.breezeScrollBars.enabled) {
57 loadBreezeScrollBars(); 65​ loadBreezeScrollBars();
58 } 66​ }
59 if (items.mpris.enabled) { 67​ if (items.mpris.enabled) {
60 loadMpris(); 68​ loadMpris();
61 if (items.mprisMediaSessions.enabled) { 69​ if (items.mprisMediaSessions.enabled) {
62 loadMediaSessionsShim(); 70​ loadMediaSessionsShim();
63 } 71​ }
64 } 72​ }
73​ if (items.purpose.enabled) {
74​ loadPurpose();
75​ }
65}); 76​});
66 77​
67// BREEZE SCROLL BARS 78​// BREEZE SCROLL BARS
68// ------------------------------------------------------------------------ 79​// ------------------------------------------------------------------------
69// 80​//
70function loadBreezeScrollBars() { 81​function loadBreezeScrollBars() {
71 if (IS_FIREFOX) { 82​ if (IS_FIREFOX) {
72 return; 83​ return;
▲ Show 20 Lines • Show All 51 Lines • ▼ Show 20 Line(s)132}
124 document.head.appendChild(styleTag); 135​ document.head.appendChild(styleTag);
125} 136​}
126 137​
127 138​
128// MPRIS 139​// MPRIS
129// ------------------------------------------------------------------------ 140​// ------------------------------------------------------------------------
130// 141​//
131 142​
132// we give our transfer div a "random id" for privacy 143​var mediaSessionsTransferDivId = generateGuid();
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var -> let

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133// from https://stackoverflow.com/questions/105034/create-guid-uuid-in-javascript ​
134var mediaSessionsTransferDivId ='xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) { ​
135 var r = Math.random()*16|0, v = c == 'x' ? r : (r&0x3|0x8); ​
136 return v.toString(16); ​
137}); ​
138 144​
139// also give the function a "random" name as we have to have it in global scope to be able 145​// also give the function a "random" name as we have to have it in global scope to be able
140// to invoke callbacks from outside, UUID might start with a number, so prepend something 146​// to invoke callbacks from outside, UUID might start with a number, so prepend something
141var mediaSessionsClassName = "f" + mediaSessionsTransferDivId.replace(/-/g, ""); 147​var mediaSessionsClassName = "f" + mediaSessionsTransferDivId.replace(/-/g, "");
142 148​
143var activePlayer; 149​var activePlayer;
144// When a player has no duration yet, we'll wait for it becoming known 150​// When a player has no duration yet, we'll wait for it becoming known
145// to determine whether to ignore it (short sound) or make it active 151​// to determine whether to ignore it (short sound) or make it active
▲ Show 20 Lines • Show All 657 Lines • ▼ Show 20 Line(s)785 window.Audio = function () {
803 809​
804 return createdAudio; 810​ return createdAudio;
805 }; 811​ };
806 } 812​ }
807 `); 813​ `);
808 814​
809 } 815​ }
810} 816​}
817​
818​// PURPOSE / WEB SHARE API
819​// ------------------------------------------------------------------------
820​//
821​var purposeTransferDivId = generateGuid();
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var -> let

ognarb: var -> let
822​var purposeTransferClassName = "p" + purposeTransferDivId.replace(/-/g, "");
823​
824​var purposeLoaded = false;
825​function loadPurpose() {
826​ if (purposeLoaded) {
827​ return;
828​ }
829​
830​ purposeLoaded = true;
831​
832​ // navigator.share must only be defined in secure (https) context
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Where is that documented?

fvogt: Where is that documented?
broulikAuthorUnsubmitted
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https://w3c.github.io/web-share/#security-and-privacy-considerations

  1. Security and privacy considerations

    […]

    *Due to the capabilities of the API surface, navigator.share() is available only in secure contexts (such as https:// schemes).
broulik: https://w3c.github.io/web-share/#security-and-privacy-considerations > 4. Security and privacy…
833​ if (!window.isSecureContext) {
834​ return;
835​ }
836​
837​ window.addEventListener("message", (e) => {
838​ let data = e.data || {};
839​ let payload = data.payload;
840​ if (data.subsystem !== "purpose" || data.action !== "share" || typeof payload !== "object") {
841​ return;
842​ }
843​
844​ sendMessage("purpose", "share", payload).then((response) => {
845​ executeScript(`
846​ function() {
847​ ${purposeTransferClassName}.pendingResolve();
848​ }
849​ `);
850​ }, (err) => {
851​ // Deliberately not giving any more details about why it got rejected
852​ executeScript(`
853​ function() {
854​ ${purposeTransferClassName}.pendingReject(new DOMException("Share request aborted", "AbortError"));
855​ }
856​ `);
857​ }).finally(() => {
858​ executeScript(`
859​ function() {
860​ ${purposeTransferClassName}.reset();
861​ }
862​ `);
863​ });;
864​ });
865​
866​ executeScript(`
867​ function() {
868​ ${purposeTransferClassName} = function() {};
869​ let transfer = ${purposeTransferClassName};
870​ transfer.reset = () => {
871​ transfer.pendingResolve = null;
872​ transfer.pendingReject = null;
873​ };
874​ transfer.reset();
875​
876​ if (!navigator.canShare) {
877​ navigator.canShare = (data) => {
878​ if (!data) {
879​ return false;
880​ }
881​
882​ if (data.title === undefined && data.text === undefined && data.url === undefined) {
883​ return false;
884​ }
885​
886​ if (data.url) {
887​ // check if URL is valid
888​ try {
889​ new URL(data.url, document.location.href);
890​ } catch (e) {
891​ return false;
892​ }
893​ }
894​
895​ return true;
896​ }
897​ }
898​
899​ if (!navigator.share) {
900​ navigator.share = (data) => {
901​ return new Promise((resolve, reject) => {
902​ if (!navigator.canShare(data)) {
903​ return reject(new TypeError());
904​ }
905​
906​ if (data.url) {
907​ // validity already checked in canShare, hence no catch
908​ data.url = new URL(data.url, document.location.href).toString();
909​ }
910​
911​ if (!window.event || !window.event.isTrusted) {
912​ return reject(new DOMException("navigator.share can only be called in response to user interaction", "NotAllowedError"));
913​ }
914​
915​ if (transfer.pendingResolve || transfer.pendingReject) {
916​ return reject(new DOMException("A share is already in progress", "AbortError"));
917​ }
918​
919​ transfer.pendingResolve = resolve;
920​ transfer.pendingReject = reject;
921​
922​ window.postMessage({
923​ subsystem: "purpose",
924​ action: "share",
925​ payload: data
926​ });
927​ });
928​ };
929​ }
930​ }
931​ `);
932​}