mirror of
https://github.com/Droid-Deck/DroidDeck.git
synced 2026-11-11 11:01:07 +00:00
MaxsTechReview
9f7f6d821d
* perf(epic): keep the hidden launcher from loading its store and Fab pages, and compress it while games run The hidden Epic Games Launcher that stays up for sign-in while a game runs pre-warmed its store and Fab pages on a display nobody sees. Under FEX each page used about one core and grew past a gigabyte, crashing and reloading in a loop. The hidden instance now skips the store pre-warm, gets a blank page in place of Fab, and is paged out to zRAM with the Steam client once a game has focus. The visible launcher is unchanged. * test(zram): keep the scan fixture PIDs above the kernel PID range
242 lines
13 KiB
C
242 lines
13 KiB
C
#if !defined(__x86_64__)
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#error webkitinput is built for x86_64 guests only
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#endif
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typedef struct _WebKitSettings WebKitSettings;
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typedef struct _WebKitUserContentManager WebKitUserContentManager;
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typedef struct _WebKitUserScript WebKitUserScript;
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extern void g_object_set(void *object, const char *first_property, ...) __attribute__((weak));
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extern void *g_object_get_data(void *object, const char *key) __attribute__((weak));
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extern void g_object_set_data(void *object, const char *key, void *data) __attribute__((weak));
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extern void *dlsym(void *handle, const char *symbol) __attribute__((weak));
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extern unsigned gtk_key_snooper_install(int (*snooper)(void *, void *, void *), void *data) __attribute__((weak));
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extern void *gtk_widget_get_toplevel(void *widget) __attribute__((weak));
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extern void gtk_container_forall(void *container, void (*callback)(void *, void *), void *data) __attribute__((weak));
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extern unsigned long gtk_container_get_type(void) __attribute__((weak));
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extern unsigned long webkit_web_view_get_type(void) __attribute__((weak));
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extern int g_type_check_instance_is_a(void *instance, unsigned long type) __attribute__((weak));
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extern const char *webkit_web_view_get_uri(void *view) __attribute__((weak));
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extern void webkit_web_view_run_javascript(void *view, const char *script, void *cancellable, void *callback,
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void *data) __attribute__((weak));
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extern WebKitUserScript *webkit_user_script_new(const char *source, int frames, int time,
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const char *const *allow, const char *const *block) __attribute__((weak));
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extern void webkit_user_script_unref(WebKitUserScript *script) __attribute__((weak));
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extern const char *g_getenv(const char *name) __attribute__((weak));
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static const char NAV_SCRIPT[] =
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"(()=>{let open=-1e9,arrowAt=-1e9,ringed=null,ringOutline='',ringOffset='',settleTimer=0,settling=false,redirecting=false;"
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"const shown=()=>[...document.querySelectorAll('[role=dialog],[role=alertdialog],[aria-modal=true],[role=menu]')]"
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".some(e=>e.getClientRects().length);"
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"const hidden=e=>{const r=e.getBoundingClientRect();if(!r.width||!r.height)return true;"
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"for(let n=e;n&&n.nodeType===1;n=n.parentElement){const s=getComputedStyle(n);"
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"if(s.visibility==='hidden'||+s.opacity<0.1)return true;}return false;};"
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"const windowButton=e=>/^(Minimize|Maximize|Restore|Close) window$/.test(e.getAttribute('aria-label')||'');"
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"const editing=e=>!!e&&e.nodeType===1&&(e.isContentEditable||"
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"e.matches('input:not([type=checkbox]):not([type=radio]):not([type=button]):not([type=submit]),textarea,select'));"
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"const mainNav=()=>[...document.querySelectorAll('nav')].filter(n=>n.querySelectorAll('a[href]').length>1&&!hidden(n))"
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".sort((a,b)=>a.getBoundingClientRect().y-b.getBoundingClientRect().y)[0];"
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"const first=nav=>{const below=nav?nav.getBoundingClientRect().bottom:0,all=[];"
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"for(const e of document.querySelectorAll('a[href],button,input,[role=button],[tabindex]')){"
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"if(e.tabIndex<0||(nav&&nav.contains(e)))continue;const r=e.getBoundingClientRect();"
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"if(r.top<below||r.bottom>innerHeight||windowButton(e)||hidden(e))continue;all.push({e,r});}"
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"const big=all.filter(c=>c.r.width*c.r.height>=12000),list=big.length?big:all;"
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"const key=c=>Math.round(c.r.top/8)*1e5+c.r.left;"
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"list.sort((a,b)=>key(a)-key(b));return list.length?list[0].e:null;};"
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"const big=e=>{const r=e.getBoundingClientRect();return r.width*r.height>=12000;};"
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"const toward=(from,key,nav,small)=>{const r=from.getBoundingClientRect(),cx=r.left+r.width/2,cy=r.top+r.height/2;let best=null,score=1e9;"
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"for(const c of document.querySelectorAll('a[href],button,[role=button],[tabindex]')){if(c===from||c.tabIndex<0||(nav&&nav.contains(c))||from.contains(c)||c.contains(from))continue;"
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"const q=c.getBoundingClientRect();if(!small&&q.width*q.height<12000)continue;const qx=q.left+q.width/2,qy=q.top+q.height/2;let along,across;"
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"if(key==='ArrowDown'){along=q.top-r.bottom;across=qx-cx;}else if(key==='ArrowUp'){along=r.top-q.bottom;across=qx-cx;}"
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"else if(key==='ArrowRight'){along=q.left-r.right;across=qy-cy;}else{along=r.left-q.right;across=qy-cy;}"
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"if(along<-4)continue;const d=Math.max(along,0)+2*Math.abs(across);if(d<score&&!windowButton(c)&&!hidden(c)){score=d;best=c;}}return best;};"
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"const settle=()=>{const a=document.activeElement;if(editing(a)||shown())return;const nav=mainNav(),list=[];"
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"for(const c of document.querySelectorAll('a[href],button,[role=button],[tabindex]')){if(c.tabIndex<0||(nav&&nav.contains(c)))continue;"
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"const r=c.getBoundingClientRect();if(r.width*r.height>=12000&&r.top>=0&&r.left>=0&&r.bottom<=innerHeight&&r.right<=innerWidth)list.push({c,r});}"
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"const key=x=>Math.round(x.r.top/8)*1e5+x.r.left;list.sort((x,y)=>key(x)-key(y));"
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"for(const {c,r} of list){const hit=document.elementFromPoint(r.left+r.width/2,r.top+8);"
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"if(hit&&(hit===c||c.contains(hit))&&!hidden(c)){arrowAt=performance.now();c.focus({preventScroll:true});return;}}};"
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"const arm=()=>{clearTimeout(settleTimer);settleTimer=setTimeout(()=>{settling=false;settle();},200);};"
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"addEventListener('scroll',()=>{if(settling)arm();},true);"
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"const unring=()=>{if(ringed){ringed.style.outline=ringOutline;ringed.style.outlineOffset=ringOffset;ringed=null;}};"
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"addEventListener('keydown',e=>{const k=e.key||'';if(k.startsWith('Arrow')){arrowAt=e.timeStamp;const a=document.activeElement;"
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"if(!editing(a)&&!shown()){const nav=mainNav();"
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"if(!a||a===document.body||hidden(a)||(k==='ArrowDown'&&nav&&nav.contains(a))){const f=first(nav);"
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"if(f){e.preventDefault();e.stopImmediatePropagation();f.focus();f.scrollIntoView({block:'nearest'});}}"
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"else if(big(a)&&!e.ctrlKey&&!e.altKey){let t=toward(a,k,nav);"
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"if(!t&&(k==='ArrowUp'||k==='ArrowDown'))t=toward(a,k,nav,true);"
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"if(t){e.preventDefault();e.stopImmediatePropagation();t.focus({preventScroll:true});t.scrollIntoView({block:'nearest',inline:'nearest'});}}}}"
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"if(k==='Escape')open=shown()?e.timeStamp:-1e9;"
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"if(e.code==='F13'){e.preventDefault();e.stopImmediatePropagation();settling=true;arm();}},true);"
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"addEventListener('keydown',e=>{if(e.key!=='BrowserBack')return;e.preventDefault();e.stopImmediatePropagation();"
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"const a=document.activeElement;if(editing(a)){a.blur();return;}"
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"if(e.timeStamp-open>500)history.back();},true);"
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"window.droiddeckTab=step=>{"
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"const nav=mainNav();if(!nav)return;"
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"const tabs=[...nav.querySelectorAll('a[href]')].filter(a=>!hidden(a)),part=p=>p.split('/')[1]||'';"
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"const at=tabs.findIndex(a=>part(new URL(a.href).pathname)===part(location.pathname));"
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"const to=tabs[Math.min(tabs.length-1,Math.max(0,at+step))];"
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"if(at>=0&&to!==tabs[at]){to.click();to.blur();}};"
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"const redirect=n=>{redirecting=true;try{n.focus();}finally{redirecting=false;}};"
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"addEventListener('focusout',unring,true);"
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"addEventListener('focusin',e=>{const t=e.target;if(!(t instanceof Element)||e.timeStamp-arrowAt>1000)return;"
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"const back=e.relatedTarget instanceof Element&&e.relatedTarget.focus?e.relatedTarget:null;"
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"if(!redirecting&&windowButton(t)){if(back)redirect(back);return;}"
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"if(!redirecting&&hidden(t)){let a=t.parentElement;"
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"while(a&&!(a.matches('a[href],button,[role=button],[tabindex]')&&!hidden(a)))a=a.parentElement;"
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"if(a)redirect(a);else if(back)redirect(back);return;}"
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"unring();ringed=(t.matches('input,textarea')&&t.closest('label'))||t;"
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"ringOutline=ringed.style.outline;ringOffset=ringed.style.outlineOffset;"
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"ringed.style.outline='3px solid #fff';ringed.style.outlineOffset='2px';},true);})();";
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typedef struct {
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int type;
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void *window;
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signed char send_event;
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unsigned time;
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unsigned state;
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unsigned keyval;
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} KeyEvent;
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static void *launcher_view;
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static void find_launcher_view(void *widget, void *data)
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{
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(void)data;
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if (launcher_view)
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return;
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if (g_type_check_instance_is_a(widget, webkit_web_view_get_type())) {
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const char *uri = webkit_web_view_get_uri(widget);
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const char *prefix = "tauri:";
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while (uri && *prefix && *uri == *prefix) {
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uri++;
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prefix++;
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}
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if (uri && !*prefix)
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launcher_view = widget;
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} else if (g_type_check_instance_is_a(widget, gtk_container_get_type())) {
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gtk_container_forall(widget, find_launcher_view, 0);
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}
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}
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static int switch_tab(void *grab, void *event_data, void *data)
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{
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KeyEvent *event = event_data;
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(void)data;
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if (!grab || event->type != 8 || !(event->state & 4) || (event->keyval != 0xff55 && event->keyval != 0xff56))
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return 0;
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launcher_view = 0;
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find_launcher_view(gtk_widget_get_toplevel(grab), 0);
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if (!launcher_view)
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return 0;
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webkit_web_view_run_javascript(launcher_view, event->keyval == 0xff56 ? "window.droiddeckTab&&droiddeckTab(1)"
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: "window.droiddeckTab&&droiddeckTab(-1)",
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0, 0, 0);
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return 1;
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}
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static void watch_tab_keys(void)
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{
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static int watching;
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if (watching || !gtk_key_snooper_install || !gtk_widget_get_toplevel || !gtk_container_forall ||
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!gtk_container_get_type || !webkit_web_view_get_type || !g_type_check_instance_is_a ||
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!webkit_web_view_get_uri || !webkit_web_view_run_javascript)
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return;
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watching = 1;
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gtk_key_snooper_install(switch_tab, 0);
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}
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static void set(WebKitSettings *settings, const char *setter, const char *property, int value)
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{
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static int setting;
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if (setting) {
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void (*next)(WebKitSettings *, int) = dlsym ? (void (*)(WebKitSettings *, int))dlsym((void *)-1l, setter) : 0;
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if (next)
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next(settings, value);
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return;
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}
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if (!g_object_set)
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return;
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setting = 1;
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g_object_set(settings, property, value, "enable-smooth-scrolling", 0, "enable-spatial-navigation", 1, (const char *)0);
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setting = 0;
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}
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#define SETTER(name, property) \
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__attribute__((visibility("default"))) void webkit_settings_set_##name(WebKitSettings *settings, int value) \
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{ \
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set(settings, "webkit_settings_set_" #name, property, value); \
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}
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SETTER(enable_javascript, "enable-javascript")
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SETTER(enable_developer_extras, "enable-developer-extras")
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SETTER(enable_webgl, "enable-webgl")
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SETTER(enable_webaudio, "enable-webaudio")
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SETTER(enable_page_cache, "enable-page-cache")
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SETTER(javascript_can_access_clipboard, "javascript-can-access-clipboard")
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SETTER(javascript_can_open_windows_automatically, "javascript-can-open-windows-automatically")
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SETTER(enable_back_forward_navigation_gestures, "enable-back-forward-navigation-gestures")
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__attribute__((visibility("default"))) void webkit_user_content_manager_add_script(WebKitUserContentManager *manager,
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WebKitUserScript *script)
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{
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static void (*next)(WebKitUserContentManager *, WebKitUserScript *);
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if (!next && dlsym)
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next = (void (*)(WebKitUserContentManager *, WebKitUserScript *))dlsym((void *)-1l, "webkit_user_content_manager_add_script");
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if (!next)
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return;
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watch_tab_keys();
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if (g_object_get_data && g_object_set_data && webkit_user_script_new && webkit_user_script_unref &&
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!g_object_get_data(manager, "droiddeck-nav")) {
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g_object_set_data(manager, "droiddeck-nav", (void *)1);
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WebKitUserScript *nav = webkit_user_script_new(NAV_SCRIPT, 1, 0, 0, 0);
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if (nav) {
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next(manager, nav);
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webkit_user_script_unref(nav);
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}
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}
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next(manager, script);
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}
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static int starts(const char *text, const char *prefix)
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{
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while (*prefix)
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if (*text++ != *prefix++)
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return 0;
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return 1;
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}
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static int fab_uri(const char *uri)
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{
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if (!uri)
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return 0;
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if (starts(uri, "https://"))
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uri += 8;
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else if (starts(uri, "http://"))
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uri += 7;
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else
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return 0;
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if (starts(uri, "www."))
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uri += 4;
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if (!starts(uri, "fab.com"))
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return 0;
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uri += 7;
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return !*uri || *uri == '/' || *uri == '?' || *uri == '#' || *uri == ':';
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}
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static int hidden_launcher(void)
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{
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const char *hidden = g_getenv ? g_getenv("DROIDDECK_EPIC_HIDDEN") : 0;
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return hidden && hidden[0] == '1' && !hidden[1];
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}
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__attribute__((visibility("default"))) void webkit_web_view_load_uri(void *view, const char *uri)
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{
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static void (*next)(void *, const char *);
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if (!next && dlsym)
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next = (void (*)(void *, const char *))dlsym((void *)-1l, "webkit_web_view_load_uri");
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if (!next)
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return;
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next(view, hidden_launcher() && fab_uri(uri) ? "about:blank" : uri);
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}
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