') + ')', 'gi'); if (regex.test(text)) { found = true; var frag = document.createDocumentFragment(); var parts = text.split(regex); parts.forEach(function(part, i) { if (i % 2 === 0) { frag.appendChild(document.createTextNode(part)); } else { var span = document.createElement('span'); span.className = 'userscript-highlight'; span.textContent = part; frag.appendChild(span); } }); node.parentNode.replaceChild(frag, node); } }); } else if (node.nodeType === 1 && node.childNodes) { // element var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT']; if (!skipTags.includes(node.tagName)) { Array.from(node.childNodes).forEach(highlight); } } } highlight(document.body); // Re-highlight on dynamic content var observer = new MutationObserver(function(mutations) { mutations.forEach(function(m) { m.addedNodes.forEach(function(node) { if (node.nodeType === 1 || node.nodeType === 3) highlight(node); }); }); }); observer.observe(document.body, { childList: true, subtree: true }); })(); } } catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + ', 'i'); if (__m === '*' || __re.test(location.href)) { // Strip utm_, fbclid, gclid, etc. from all links on page (function() { var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content', 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid', 'ref', 'ref_src', 'source', 'medium', 'campaign']; function cleanUrl(url) { try { var u = new URL(url, window.location.origin); var changed = false; trackingParams.forEach(function(p) { if (u.searchParams.has(p)) { u.searchParams.delete(p); changed = true; } }); return changed ? u.toString() : url; } catch (e) { return url; } } function cleanLinks() { document.querySelectorAll('a[href]').forEach(function(a) { var clean = cleanUrl(a.href); if (clean !== a.href) a.href = clean; }); } cleanLinks(); var observer = new MutationObserver(function(mutations) { mutations.forEach(function(m) { m.addedNodes.forEach(function(node) { if (node.nodeType === 1) { if (node.tagName === 'A') cleanLinks(); node.querySelectorAll('a[href]').forEach(function(a) { var clean = cleanUrl(a.href); if (clean !== a.href) a.href = clean; }); } }); }); }); observer.observe(document.body, { childList: true, subtree: true }); })(); } } catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); } })(); (function(){ try { var __m = "youtube.com"; var __re = new RegExp('^' + "youtube\\.com" + ', 'i'); if (__m === '*' || __re.test(location.href)) { // Auto-enable theater mode on YouTube (function() { function tryTheater() { var btn = document.querySelector('button[aria-label="Theater mode"], ytd-player #player button[title="Theater mode"]'); if (btn && !btn.classList.contains('activated')) { btn.click(); } } // Try immediately tryTheater(); // Try after navigation (SPA) var lastUrl = location.href; setInterval(function() { if (location.href !== lastUrl) { lastUrl = location.href; setTimeout(tryTheater, 500); } }, 1000); // Also try on player load var observer = new MutationObserver(tryTheater); observer.observe(document.body, { childList: true, subtree: true }); })(); } } catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + ', 'i'); if (__m === '*' || __re.test(location.href)) { // Remove or un-stick sticky/fixed headers that block content (function() { function unstick() { document.querySelectorAll('header, nav, [role="banner"], .header, .navbar, .sticky, .fixed-top, [style*="position: fixed"], [style*="position:sticky"]').forEach(function(el) { if (el.style.position === 'fixed' || el.style.position === 'sticky' || getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') { el.style.position = 'static'; el.style.top = 'auto'; el.style.zIndex = 'auto'; } }); } unstick(); var observer = new MutationObserver(unstick); observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] }); })(); } } catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); } })(); })(); Initial support for static PIE executables by LemonBoy · Pull Request #3960 · ziglang/zig · GitHub
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Initial support for static PIE executables - #3960

Closed
LemonBoy wants to merge 1 commit into
ziglang:masterfrom
LemonBoy:piepiepie
Closed

Initial support for static PIE executables#3960
LemonBoy wants to merge 1 commit into
ziglang:masterfrom
LemonBoy:piepiepie

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@LemonBoy

@LemonBoyLemonBoy commented Dec 21, 2019

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Caveats:

  • Not enabled by default
  • Not working on mipsel yet
  • Untested with glibc, musl & standalone work just fine

@andrewrk

andrewrk commented Dec 21, 2019

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The use case for this is Address Space Layout Randomization, right? Anything else?

daurnimator
daurnimator reviewed Dec 21, 2019
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Comment threadlib/std/os/linux/start_pie.zig
return @intToPtr([*]elf.Dyn, addr);
}

pub fn apply_relocations() void {

@daurnimatordaurnimatorDec 21, 2019

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Case-styling? Or is this a traditional name from somewhere?

@LemonBoyLemonBoyJan 8, 2020

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I'm still not used to camelCase all the identifiers, will change it later :)

Comment threadlib/std/start.zig

// Do this as early as possible, the aux vector is needed
if (builtin.position_independent_executable) {
@import("os/linux/start_pie.zig").apply_relocations();

@daurnimatordaurnimatorDec 21, 2019

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Would it make sense to pass in auxv instead of using it indirectly via the global?

andrewrk
andrewrk approved these changes Jan 7, 2020
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I think this is good to merge once it's passing the CI.

I do want to know what the use case is though, to better understand how defaults should work, and to understand why people might want to enable this feature. Is it just for ASLR?

@LemonBoy

LemonBoy commented Jan 8, 2020

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I think this is good to merge once it's passing the CI.

This depends on #3971 landing

I do want to know what the use case is though, to better understand how defaults should work, and to understand why people might want to enable this feature. Is it just for ASLR?

Yep

@andrewrkandrewrk mentioned this pull request Feb 18, 2020
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@andrewrk

andrewrk commented Feb 18, 2020

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I opened #4503 so that this diff doesn't get lost. Closing the PR since it's not merge-ready and hasn't been for over a month.

andrewrk added a commit that referenced this pull request Nov 23, 2020
@andrewrk
modernize the PIE patch for the latest master branch
abc717f
This is the part of #3960 that has to be rewritten to apply to latest
master branch code.
andrewrk added a commit that referenced this pull request Nov 23, 2020
@andrewrk
Support PIE (Position Independent Executables)
c7170e4
Closes#4503
Revives #3960
Merges branch 'pie' into master
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@andrewrkandrewrkandrewrk approved these changes
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@LemonBoy@andrewrk@daurnimator