From bca265aea67ec62499aaa113a6490ce9ec7fe730 Mon Sep 17 00:00:00 2001
From: lolcat <will@lolcat.ca>
Date: Sat, 22 Jul 2023 14:41:14 -0400
Subject: still missing things on google scraper

---
 static/client.js | 682 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 682 insertions(+)
 create mode 100644 static/client.js

(limited to 'static/client.js')

diff --git a/static/client.js b/static/client.js
new file mode 100644
index 0000000..82ea4df
--- /dev/null
+++ b/static/client.js
@@ -0,0 +1,682 @@
+
+/*
+	Global functions
+*/
+function htmlspecialchars(str){
+
+	var map = {
+		'&': '&amp;',
+		'<': '&lt;',
+		'>': '&gt;',
+		'"': '&quot;',
+		"'": '&#039;'
+	}
+
+	return str.replace(/[&<>"']/g, function(m){return map[m];});
+}
+
+function htmlspecialchars_decode(str){
+	
+	var map = {
+		'&amp;': '&',
+		'&lt;': '<',
+		'&gt;': '>',
+		'&quot;': '"',
+		'&#039;': "'"
+	}
+	
+	return str.replace(/&amp;|&lt;|&gt;|&quot;|&#039;/g, function(m){return map[m];});
+}
+
+function is_click_within(elem, classname, is_id = false){
+	
+	while(true){
+		
+		if(elem === null){
+			
+			return false;
+		}
+		
+		if(
+			(
+				is_id === false &&
+				elem.className == classname
+			) ||
+			(
+				is_id === true &&
+				elem.id == classname
+			)
+		){
+			
+			return elem;
+		}
+		
+		elem = elem.parentElement;
+	}
+}
+
+
+
+/*
+	Prevent GET parameter pollution
+*/
+var form = document.getElementsByTagName("form");
+
+if(
+	form.length !== 0 &&
+	window.location.pathname != "/" &&
+	window.location.pathname != "/settings.php" &&
+	window.location.pathname != "/settings"
+){
+	form = form[0];
+	
+	var scraper_dropdown = document.getElementsByName("scraper")[0];
+	
+	scraper_dropdown.addEventListener("change", function(choice){
+		
+		submit(form);
+	});
+	
+	form.addEventListener("submit", function(e){
+		
+		e.preventDefault();
+		submit(e.srcElement);
+	});
+}
+
+function submit(e){
+	
+	var GET = "";
+	var first = true;
+	
+	if((s = document.getElementsByName("s")).length !== 0){
+		
+		GET += "?s=" + encodeURIComponent(s[0].value).replaceAll("%20", "+");
+		first = false;
+	}
+	
+	Array.from(
+		e.getElementsByTagName("select")
+	).concat(
+		Array.from(
+			e.getElementsByTagName("input")
+		)
+	).forEach(function(el){
+		
+		var firstelem = el.getElementsByTagName("option");
+		
+		if(
+			(
+				(
+					firstelem.length === 0 ||
+					firstelem[0].value != el.value
+				) &&
+				el.name != "" &&
+				el.value != "" &&
+				el.name != "s"
+			) ||
+			el.name == "scraper" ||
+			el.name == "nsfw"
+		){
+			
+			if(first){
+				
+				GET += "?";
+				first = false;
+			}else{
+				
+				GET += "&";
+			}
+			
+			GET += encodeURIComponent(el.name).replaceAll("%20", "+") + "=" + encodeURIComponent(el.value).replaceAll("%20", "+");
+		}
+	});
+	
+	window.location.href = GET;
+}
+
+
+
+/*
+	Hide show more button when it's not needed on answers
+*/
+var answer_div = document.getElementsByClassName("answer");
+
+if(answer_div.length !== 0){
+	answer_div = Array.from(answer_div);
+	var spoiler_button_div = Array.from(document.getElementsByClassName("spoiler-button"));
+
+	// execute on pageload
+	hide_show_more();
+
+	window.addEventListener("resize", hide_show_more);
+
+	function hide_show_more(){
+		
+		var height = window.innerWidth >= 1000 ? 600 : 200;
+		
+		for(i=0; i<answer_div.length; i++){
+			
+			if(answer_div[i].scrollHeight < height){
+				
+				spoiler_button_div[i].style.display = "none";
+				
+				document.getElementById(spoiler_button_div[i].htmlFor).checked = true;
+			}else{
+				
+				spoiler_button_div[i].style.display = "block";
+			}
+		}
+	}
+}
+
+switch(document.location.pathname){
+	
+	case "/web":
+	case "/web.php":
+		var image_class = "image";
+		break;
+	
+	case "/images":
+	case "/images.php":
+		var image_class = "thumb";
+		break;
+	
+	default:
+		var image_class = null;
+}
+
+if(image_class !== null){
+	
+	/*
+		Add popup to document
+	*/
+	var popup_bg = document.createElement("div");
+	popup_bg.id = "popup-bg";
+	document.body.appendChild(popup_bg);
+	
+	// enable/disable pointer events
+	if(!document.cookie.includes("bg_noclick=yes")){
+		
+		popup_bg.style.pointerEvents = "none";
+	}
+	
+	var popup_status = document.createElement("div");
+	popup_status.id = "popup-status";
+	document.body.appendChild(popup_status);
+	
+	var popup_body = document.createElement("div");
+	popup_body.id = "popup";
+	document.body.appendChild(popup_body);
+	
+	// import popup
+	var popup_body = document.getElementById("popup");
+	var popup_status = document.getElementById("popup-status");
+	var popup_image = null; // is set later on popup click
+	
+	// image metadata
+	var collection = []; // will contain width, height, image URL
+	var collection_index = 0;
+	
+	// event handling helper variables
+	var is_popup_shown = false;
+	var mouse_down = false;
+	var mouse_move = false;
+	var move_x = 0;
+	var move_y = 0;
+	var target_is_popup = false;
+	var mirror_x = false;
+	var mirror_y = false;
+	var rotation = 0;
+	
+	/*
+		Image dragging (mousedown)
+	*/
+	document.addEventListener("mousedown", function(div){
+		
+		if(div.buttons !== 1){
+			
+			return;
+		}
+		
+		mouse_down = true;
+		mouse_move = false;
+		
+		if(is_click_within(div.target, "popup", true) === false){
+			
+			target_is_popup = false;
+		}else{
+
+			target_is_popup = true;
+			
+			var pos = popup_body.getBoundingClientRect();
+			move_x = div.x - pos.x;
+			move_y = div.y - pos.y;
+		}
+	});
+	
+	/*
+		Image dragging (mousemove)
+	*/
+	document.addEventListener("mousemove", function(pos){
+		
+		if(
+			target_is_popup &&
+			mouse_down
+		){
+			
+			mouse_move = true;
+			movepopup(popup_body, pos.clientX - move_x, pos.clientY - move_y);
+		}
+	});
+	
+	/*
+		Image dragging (mouseup)
+	*/
+	document.addEventListener("mouseup", function(){
+		
+		mouse_down = false;
+	});
+	
+	/*
+		Image popup open
+	*/
+	document.addEventListener("click", function(click){
+		
+		// should our click trigger image open?
+		if(
+			elem = is_click_within(click.target, image_class) ||
+			click.target.classList.contains("openimg")
+		){
+			
+			event.preventDefault();
+			is_popup_shown = true;
+			
+			// reset position params
+			mirror_x = false;
+			mirror_y = false;
+			rotation = 0;
+			scale = 60;
+			collection_index = 0;
+			
+			// get popup data
+			if(elem === true){
+				// we clicked a simple image preview
+				elem = click.target;
+				var image_url = elem.getAttribute("src");
+				
+				if(image_url.startsWith("/proxy")){
+					
+					var match = image_url.match(/i=([^&]+)/);
+					
+					if(match !== null){
+						
+						image_url = decodeURIComponent(match[1]);
+					}
+				}else{
+					
+					image_url = htmlspecialchars_decode(image_url);
+				}
+				
+				collection = [
+					{
+						"url": image_url,
+						"width": Math.round(click.target.naturalWidth),
+						"height": Math.round(click.target.naturalHeight)
+					}
+				];
+				
+				var title = "No description provided";
+				
+				if(click.target.title != ""){
+					
+					title = click.target.title;
+				}else{
+					
+					if(click.target.alt != ""){
+						
+						title = click.target.alt;
+					}
+				}
+			}else{
+				
+				if(image_class == "thumb"){
+					// we're inside image.php
+					
+					elem =
+						elem
+						.parentElement
+						.parentElement;
+					
+					var image_url = elem.getElementsByTagName("a")[1].href;
+				}else{
+					
+					// we're inside web.php
+					var image_url = elem.href;
+				}
+				
+				collection =
+					JSON.parse(
+						elem.getAttribute("data-json")
+					);
+				
+				var title = elem.title;
+			}
+			
+			// prepare HTML
+			var html =
+				'<div id="popup-num">(' + collection.length + ')</div>' + 
+				'<div id="popup-dropdown">' +
+					'<select name="viewer-res" onchange="changeimage(event)">';
+			
+			for(i=0; i<collection.length; i++){
+				
+				if(collection[i].url.startsWith("data:")){
+					
+					var domain = "&lt;Base64 Data&gt;";
+				}else{
+					
+					var domain = new URL(collection[i].url).hostname;
+				}
+				
+				html += '<option value="' + i + '">' + '(' + collection[i].width + 'x' + collection[i].height + ') ' + domain + '</option>';
+			}
+			
+			popup_status.innerHTML =
+				html + '</select></div>' +
+				'<a href="' + htmlspecialchars(image_url) + '" rel="noreferrer nofollow "id="popup-title">' + htmlspecialchars(title) + '</a>';
+			
+			popup_body.innerHTML =
+				'<img src="' + getproxylink(collection[0].url) + '" draggable="false" id="popup-image">';
+			
+			// make changes to DOM
+			popup_body.style.display = "block";
+			popup_bg.style.display = "block";
+			popup_status.style.display = "table";
+			
+			// store for rotation functions & changeimage()
+			popup_image = document.getElementById("popup-image");
+			
+			scalepopup(collection[collection_index], scale);
+			centerpopup();
+		}else{
+			
+			// click inside the image viewer
+			// resize image
+			if(is_click_within(click.target, "popup", true)){
+				
+				if(mouse_move === false){
+					scale = 80;
+					scalepopup(collection[collection_index], scale);
+					centerpopup();
+				}
+			}else{
+				
+				if(is_click_within(click.target, "popup-status", true) === false){
+					
+					// click outside the popup while its open
+					// close it
+					if(is_popup_shown){
+						
+						hidepopup();
+					}
+				}
+			}
+		}
+	});
+	
+	/*
+		Scale image viewer
+	*/
+	popup_body.addEventListener("wheel", function(scroll){
+		
+		event.preventDefault();
+		
+		if(
+			scroll.altKey ||
+			scroll.ctrlKey ||
+			scroll.shiftKey
+		){
+			
+			var increment = 7;
+		}else{
+			
+			var increment = 14;
+		}
+		
+		if(scroll.wheelDelta > 0){
+			
+			// scrolling up
+			scale = scale + increment;
+		}else{
+			
+			// scrolling down
+			if(scale - increment > 7){
+				scale = scale - increment;
+			}
+		}
+		
+		// calculate relative size before scroll
+		var pos = popup_body.getBoundingClientRect();
+		var x = (scroll.x - pos.x) / pos.width;
+		var y = (scroll.y - pos.y) / pos.height;
+		
+		scalepopup(collection[collection_index], scale);
+		
+		// move popup to % we found
+		pos = popup_body.getBoundingClientRect();
+		
+		movepopup(
+			popup_body,
+			scroll.clientX - (x * pos.width),
+			scroll.clientY - (y * pos.height)
+		);
+	});
+	
+	/*
+		Keyboard controls
+	*/
+	
+	document.addEventListener("keydown", function(key){
+		
+		// close popup
+		if(
+			is_popup_shown &&
+			key.keyCode === 27
+		){
+			
+			hidepopup();
+			return;
+		}
+		
+		if(is_popup_shown === false){
+			
+			return;
+		}
+		
+		if(
+			key.altKey ||
+			key.ctrlKey ||
+			key.shiftKey
+		){
+			
+			// mirror image
+			switch(key.keyCode){
+				
+				case 37:
+					// left
+					key.preventDefault();
+					mirror_x = true;
+					break;
+				
+				case 38:
+					// up
+					key.preventDefault();
+					mirror_y = false;
+					break;
+				
+				case 39:
+					// right
+					key.preventDefault();
+					mirror_x = false;
+					break;
+				
+				case 40:
+					// down
+					key.preventDefault();
+					mirror_y = true;
+					break;
+			}
+		}else{
+			
+			// rotate image
+			switch(key.keyCode){
+				
+				case 37:
+					// left
+					key.preventDefault();
+					rotation = -90;
+					break;
+				
+				case 38:
+					// up
+					key.preventDefault();
+					rotation = 0;
+					break;
+				
+				case 39:
+					// right
+					key.preventDefault();
+					rotation = 90;
+					break;
+				
+				case 40:
+					// down
+					key.preventDefault();
+					rotation = -180;
+					break;
+			}
+		}
+		
+		popup_image.style.transform =
+			"scale(" +
+				(mirror_x ? "-1" : "1") +
+				", " +
+				(mirror_y ? "-1" : "1") +
+			") " +
+			"rotate(" +
+				rotation + "deg" +
+			")";
+	});
+}
+
+function getproxylink(url){
+	
+	if(url.startsWith("data:")){
+		
+		return htmlspecialchars(url);
+	}else{
+		
+		console.log(url);
+		return '/proxy?i=' + encodeURIComponent(url);
+	}
+}
+
+function hidepopup(){
+	
+	is_popup_shown = false;
+	popup_status.style.display = "none";
+	popup_body.style.display = "none";
+	popup_bg.style.display = "none";
+}
+
+function scalepopup(size, scale){
+	
+	var ratio =
+		Math.min(
+			(window.innerWidth * (scale / 100)) / collection[collection_index].width, (window.innerHeight * (scale / 100)) / collection[collection_index].height
+		);
+	
+	popup_body.style.width = size.width * ratio + "px";
+	popup_body.style.height = size.height * ratio + "px";
+}
+
+function centerpopup(){
+	
+	var size = popup_body.getBoundingClientRect();
+	var size = {
+		"width": parseInt(size.width),
+		"height": parseInt(size.height)
+	};
+	
+	movepopup(
+		popup_body,
+		(window.innerWidth / 2) - (size.width / 2),
+		(window.innerHeight / 2) - (size.height / 2)
+	);
+}
+
+function movepopup(popup_body, x, y){
+	
+	popup_body.style.left = x + "px";
+	popup_body.style.top = y + "px";
+}
+
+function changeimage(event){
+	
+	// reset rotation params
+	mirror_x = false;
+	mirror_y = false;
+	rotation = 0;
+	
+	scale = 60;
+	
+	collection_index = parseInt(event.target.value);
+	
+	// we set innerHTML otherwise old image lingers a little
+	popup_body.innerHTML =
+		'<img src="' + getproxylink(collection[collection_index].url) + '" draggable="false" id="popup-image">';
+	
+	// store for rotation functions & changeimage()
+	popup_image = document.getElementById("popup-image");
+	
+	scalepopup(collection[collection_index], scale);
+	centerpopup();
+}
+
+/*
+	Shortcuts
+*/
+var searchbox_wrapper = document.getElementsByClassName("searchbox");
+
+if(searchbox_wrapper.length !== 0){
+	searchbox_wrapper = searchbox_wrapper[0];
+	var searchbox = searchbox_wrapper.getElementsByTagName("input")[1];
+
+	document.addEventListener("keydown", function(key){
+		
+		switch(key.keyCode){
+			
+			case 191:
+				// 191 = /
+				if(document.activeElement.tagName == "INPUT"){
+					
+					// already focused, ignore
+					break;
+				}
+				
+				if(
+					typeof is_popup_shown != "undefined" &&
+					is_popup_shown
+				){
+					
+					hidepopup();
+				}
+				
+				window.scrollTo(0, 0);
+				searchbox.focus();
+				key.preventDefault();
+				break;
+		}
+	});
+}
-- 
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