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Toshit Chawda 2024-07-14 16:31:36 -07:00
parent 56767f5b31
commit 4906b71e47
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37 changed files with 789 additions and 784 deletions
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94
src/shared/rewriters/html.ts
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@ -1,28 +1,28 @@
import { Parser } from "htmlparser2"
import { DomHandler, Element } from "domhandler"
import { hasAttrib } from "domutils"
import render from "dom-serializer"
import { encodeUrl } from "./url"
import { rewriteCss } from "./css"
import { rewriteJs } from "./js"
import { Parser } from "htmlparser2";
import { DomHandler, Element } from "domhandler";
import { hasAttrib } from "domutils";
import render from "dom-serializer";
import { encodeUrl } from "./url";
import { rewriteCss } from "./css";
import { rewriteJs } from "./js";
export function isScramjetFile(src: string) {
let bool = false
;["codecs", "client", "shared", "worker", "config"].forEach((file) => {
if (src === self.$scramjet.config[file]) bool = true
})
let bool = false;
["codecs", "client", "shared", "worker", "config"].forEach((file) => {
if (src === self.$scramjet.config[file]) bool = true;
});
return bool
return bool;
}
export function rewriteHtml(html: string, origin?: URL) {
const handler = new DomHandler((err, dom) => dom)
const parser = new Parser(handler)
const handler = new DomHandler((err, dom) => dom);
const parser = new Parser(handler);
parser.write(html)
parser.end()
parser.write(html);
parser.end();
return render(traverseParsedHtml(handler.root, origin))
return render(traverseParsedHtml(handler.root, origin));
}
// i need to add the attributes in during rewriting
@ -31,36 +31,36 @@ function traverseParsedHtml(node, origin?: URL) {
/* csp attributes */
for (const cspAttr of ["nonce", "integrity", "csp"]) {
if (hasAttrib(node, cspAttr)) {
node.attribs[`data-${cspAttr}`] = node.attribs[cspAttr]
delete node.attribs[cspAttr]
node.attribs[`data-${cspAttr}`] = node.attribs[cspAttr];
delete node.attribs[cspAttr];
}
}
/* url attributes */
for (const urlAttr of ["src", "href", "data", "action", "formaction"]) {
if (hasAttrib(node, urlAttr) && !isScramjetFile(node.attribs[urlAttr])) {
const value = node.attribs[urlAttr]
node.attribs[`data-${urlAttr}`] = value
node.attribs[urlAttr] = encodeUrl(value, origin)
const value = node.attribs[urlAttr];
node.attribs[`data-${urlAttr}`] = value;
node.attribs[urlAttr] = encodeUrl(value, origin);
}
}
/* other */
for (const srcsetAttr of ["srcset", "imagesrcset"]) {
if (hasAttrib(node, srcsetAttr)) {
const value = node.attribs[srcsetAttr]
node.attribs[`data-${srcsetAttr}`] = value
node.attribs[srcsetAttr] = rewriteSrcset(value, origin)
const value = node.attribs[srcsetAttr];
node.attribs[`data-${srcsetAttr}`] = value;
node.attribs[srcsetAttr] = rewriteSrcset(value, origin);
}
}
if (hasAttrib(node, "srcdoc"))
node.attribs.srcdoc = rewriteHtml(node.attribs.srcdoc, origin)
node.attribs.srcdoc = rewriteHtml(node.attribs.srcdoc, origin);
if (hasAttrib(node, "style"))
node.attribs.style = rewriteCss(node.attribs.style, origin)
node.attribs.style = rewriteCss(node.attribs.style, origin);
if (node.name === "style" && node.children[0] !== undefined)
node.children[0].data = rewriteCss(node.children[0].data, origin)
node.children[0].data = rewriteCss(node.children[0].data, origin);
if (
node.name === "script" &&
/(application|text)\/javascript|importmap|undefined/.test(
@ -68,32 +68,32 @@ function traverseParsedHtml(node, origin?: URL) {
) &&
node.children[0] !== undefined
)
node.children[0].data = rewriteJs(node.children[0].data, origin)
node.children[0].data = rewriteJs(node.children[0].data, origin);
if (node.name === "meta" && hasAttrib(node, "http-equiv")) {
if (node.attribs["http-equiv"] === "content-security-policy") {
node = {}
node = {};
} else if (
node.attribs["http-equiv"] === "refresh" &&
node.attribs.content.includes("url")
) {
const contentArray = node.attribs.content.split("url=")
contentArray[1] = encodeUrl(contentArray[1].trim(), origin)
node.attribs.content = contentArray.join("url=")
const contentArray = node.attribs.content.split("url=");
contentArray[1] = encodeUrl(contentArray[1].trim(), origin);
node.attribs.content = contentArray.join("url=");
}
}
if (node.name === "head") {
const scramjetScripts = []
;["codecs", "config", "shared", "client"].forEach((script) => {
const scramjetScripts = [];
["codecs", "config", "shared", "client"].forEach((script) => {
scramjetScripts.push(
new Element("script", {
src: self.$scramjet.config[script],
"data-scramjet": "",
})
)
})
);
});
node.children.unshift(...scramjetScripts)
node.children.unshift(...scramjetScripts);
}
if (node.childNodes) {
@ -101,23 +101,23 @@ function traverseParsedHtml(node, origin?: URL) {
node.childNodes[childNode] = traverseParsedHtml(
node.childNodes[childNode],
origin
)
);
}
}
return node
return node;
}
export function rewriteSrcset(srcset: string, origin?: URL) {
const urls = srcset.split(/ [0-9]+x,? ?/g)
if (!urls) return ""
const sufixes = srcset.match(/ [0-9]+x,? ?/g)
if (!sufixes) return ""
const urls = srcset.split(/ [0-9]+x,? ?/g);
if (!urls) return "";
const sufixes = srcset.match(/ [0-9]+x,? ?/g);
if (!sufixes) return "";
const rewrittenUrls = urls.map((url, i) => {
if (url && sufixes[i]) {
return encodeUrl(url, origin) + sufixes[i]
return encodeUrl(url, origin) + sufixes[i];
}
})
});
return rewrittenUrls.join("")
return rewrittenUrls.join("");
}