Fix: File pulling fails with uppercase URL characters (#4516)

* fix: remove unnecessary toLowerCase in URL validation

* test: enhance URL validation tests to preserve case sensitivity and format

* test: update URL validation tests to ensure domain normalization to lowercase while preserving path case

* small formatting

* fix filenames when downloading live URI

---------

Co-authored-by: timothycarambat <rambat1010@gmail.com>

collector/__tests__/utils/url/index.test.js

@@ -74,8 +74,10 @@ describe("validURL", () => {
 });
 
 describe("validateURL", () => {
-  it("should return the exact same URL if it's already valid", () => {
-    expect(validateURL("https://www.google.com")).toBe("https://www.google.com");
+  it("should return the same URL if it's already valid", () => {
+    expect(validateURL("https://www.google.com")).toBe(
+      "https://www.google.com"
+    );
     expect(validateURL("http://www.google.com")).toBe("http://www.google.com");
     expect(validateURL("https://random")).toBe("https://random");
 
@@ -88,16 +90,22 @@ describe("validateURL", () => {
   it("should assume https:// if the URL doesn't have a protocol", () => {
     expect(validateURL("www.google.com")).toBe("https://www.google.com");
     expect(validateURL("google.com")).toBe("https://google.com");
+    expect(validateURL("EXAMPLE.com/ABCDEF/q1=UPPER")).toBe("https://example.com/ABCDEF/q1=UPPER");
     expect(validateURL("ftp://www.google.com")).toBe("ftp://www.google.com");
-    expect(validateURL("mailto://www.google.com")).toBe("mailto://www.google.com");
+    expect(validateURL("mailto://www.google.com")).toBe(
+      "mailto://www.google.com"
+    );
     expect(validateURL("tel://www.google.com")).toBe("tel://www.google.com");
     expect(validateURL("data://www.google.com")).toBe("data://www.google.com");
   });
 
   it("should remove trailing slashes post-validation", () => {
-    expect(validateURL("https://www.google.com/")).toBe("https://www.google.com");
+    expect(validateURL("https://www.google.com/")).toBe(
+      "https://www.google.com"
+    );
     expect(validateURL("http://www.google.com/")).toBe("http://www.google.com");
     expect(validateURL("https://random/")).toBe("https://random");
+    expect(validateURL("https://example.com/ABCDEF/")).toBe("https://example.com/ABCDEF");
   });
 
   it("should handle edge cases and bad data inputs", () => {
@@ -109,4 +117,13 @@ describe("validateURL", () => {
     expect(validateURL(" ")).toBe("");
     expect(validateURL(" look here! ")).toBe("look here!");
   });
+
+  it("should preserve case of characters in URL pathname", () => {
+    expect(validateURL("https://example.com/To/ResOURce?q1=Value&qZ22=UPPE!R"))
+      .toBe("https://example.com/To/ResOURce?q1=Value&qZ22=UPPE!R");
+    expect(validateURL("https://sample.com/uPeRCaSe"))
+      .toBe("https://sample.com/uPeRCaSe");
+    expect(validateURL("Example.com/PATH/To/Resource?q2=Value&q1=UPPER"))
+      .toBe("https://example.com/PATH/To/Resource?q2=Value&q1=UPPER");
+  });
 });

collector/utils/downloadURIToFile/index.js

@@ -3,6 +3,7 @@ const fs = require("fs");
 const path = require("path");
 const { pipeline } = require("stream/promises");
 const { validURL } = require("../url");
+const { default: slugify } = require("slugify");
 
 /**
  * Download a file to the hotdir
@@ -31,7 +32,12 @@ async function downloadURIToFile(url, maxTimeout = 10_000) {
       })
       .finally(() => clearTimeout(timeout));
 
-    const localFilePath = path.join(WATCH_DIRECTORY, path.basename(url));
+    const urlObj = new URL(url);
+    const filename = `${urlObj.hostname}-${slugify(
+      urlObj.pathname.replace(/\//g, "-"),
+      { lower: true }
+    )}`;
+    const localFilePath = path.join(WATCH_DIRECTORY, filename);
     const writeStream = fs.createWriteStream(localFilePath);
     await pipeline(res.body, writeStream);
 

collector/utils/url/index.js

@@ -80,14 +80,12 @@ function validURL(url) {
  */
 function validateURL(url) {
   try {
-    let destination = url.trim().toLowerCase();
+    let destination = url.trim();
     // If the URL has a protocol, just pass through
-    if (destination.includes("://")) {
+    // If the URL doesn't have a protocol, assume https://
+    if (destination.includes("://"))
       destination = new URL(destination).toString();
-    } else {
-      // If the URL doesn't have a protocol, assume https://
-      destination = new URL(`https://${destination.trim()}`).toString();
-    }
+    else destination = new URL(`https://${destination}`).toString();
 
     // If the URL ends with a slash, remove it
     return destination.endsWith("/") ? destination.slice(0, -1) : destination;