follow-redirects - npm Package Compare versions

Comparing version 1.14.8 to 1.14.9

index.js

@@ -339,94 +339,98 @@ var url = require("url");
   // even if the specific status code is not understood.
+
+  // If the response is not a redirect; return it as-is
   var location = response.headers.location;
-  if (location && this._options.followRedirects !== false &&
-      statusCode >= 300 && statusCode < 400) {
-    // Abort the current request
-    abortRequest(this._currentRequest);
-    // Discard the remainder of the response to avoid waiting for data
-    response.destroy();
+  if (!location || this._options.followRedirects === false ||
+      statusCode < 300 || statusCode >= 400) {
+    response.responseUrl = this._currentUrl;
+    response.redirects = this._redirects;
+    this.emit("response", response);
 
-    // RFC7231§6.4: A client SHOULD detect and intervene
-    // in cyclical redirections (i.e., "infinite" redirection loops).
-    if (++this._redirectCount > this._options.maxRedirects) {
-      this.emit("error", new TooManyRedirectsError());
-      return;
-    }
+    // Clean up
+    this._requestBodyBuffers = [];
+    return;
+  }
 
-    // RFC7231§6.4: Automatic redirection needs to done with
-    // care for methods not known to be safe, […]
-    // RFC7231§6.4.2–3: For historical reasons, a user agent MAY change
-    // the request method from POST to GET for the subsequent request.
-    if ((statusCode === 301 || statusCode === 302) && this._options.method === "POST" ||
-        // RFC7231§6.4.4: The 303 (See Other) status code indicates that
-        // the server is redirecting the user agent to a different resource […]
-        // A user agent can perform a retrieval request targeting that URI
-        // (a GET or HEAD request if using HTTP) […]
-        (statusCode === 303) && !/^(?:GET|HEAD)$/.test(this._options.method)) {
-      this._options.method = "GET";
-      // Drop a possible entity and headers related to it
-      this._requestBodyBuffers = [];
-      removeMatchingHeaders(/^content-/i, this._options.headers);
-    }
+  // The response is a redirect, so abort the current request
+  abortRequest(this._currentRequest);
+  // Discard the remainder of the response to avoid waiting for data
+  response.destroy();
 
-    // Drop the Host header, as the redirect might lead to a different host
-    var currentHostHeader = removeMatchingHeaders(/^host$/i, this._options.headers);
+  // RFC7231§6.4: A client SHOULD detect and intervene
+  // in cyclical redirections (i.e., "infinite" redirection loops).
+  if (++this._redirectCount > this._options.maxRedirects) {
+    this.emit("error", new TooManyRedirectsError());
+    return;
+  }
 
-    // If the redirect is relative, carry over the host of the last request
-    var currentUrlParts = url.parse(this._currentUrl);
-    var currentHost = currentHostHeader || currentUrlParts.host;
-    var currentUrl = /^\w+:/.test(location) ? this._currentUrl :
-      url.format(Object.assign(currentUrlParts, { host: currentHost }));
+  // RFC7231§6.4: Automatic redirection needs to done with
+  // care for methods not known to be safe, […]
+  // RFC7231§6.4.2–3: For historical reasons, a user agent MAY change
+  // the request method from POST to GET for the subsequent request.
+  if ((statusCode === 301 || statusCode === 302) && this._options.method === "POST" ||
+      // RFC7231§6.4.4: The 303 (See Other) status code indicates that
+      // the server is redirecting the user agent to a different resource […]
+      // A user agent can perform a retrieval request targeting that URI
+      // (a GET or HEAD request if using HTTP) […]
+      (statusCode === 303) && !/^(?:GET|HEAD)$/.test(this._options.method)) {
+    this._options.method = "GET";
+    // Drop a possible entity and headers related to it
+    this._requestBodyBuffers = [];
+    removeMatchingHeaders(/^content-/i, this._options.headers);
+  }
 
-    // Determine the URL of the redirection
-    var redirectUrl;
-    try {
-      redirectUrl = url.resolve(currentUrl, location);
-    }
-    catch (cause) {
-      this.emit("error", new RedirectionError(cause));
-      return;
-    }
+  // Drop the Host header, as the redirect might lead to a different host
+  var currentHostHeader = removeMatchingHeaders(/^host$/i, this._options.headers);
 
-    // Create the redirected request
-    debug("redirecting to", redirectUrl);
-    this._isRedirect = true;
-    var redirectUrlParts = url.parse(redirectUrl);
-    Object.assign(this._options, redirectUrlParts);
+  // If the redirect is relative, carry over the host of the last request
+  var currentUrlParts = url.parse(this._currentUrl);
+  var currentHost = currentHostHeader || currentUrlParts.host;
+  var currentUrl = /^\w+:/.test(location) ? this._currentUrl :
+    url.format(Object.assign(currentUrlParts, { host: currentHost }));
 
-    // Drop confidential headers when redirecting to another scheme:domain
-    if (redirectUrlParts.protocol !== currentUrlParts.protocol ||
-       !isSameOrSubdomain(redirectUrlParts.host, currentHost)) {
-      removeMatchingHeaders(/^(?:authorization|cookie)$/i, this._options.headers);
-    }
+  // Determine the URL of the redirection
+  var redirectUrl;
+  try {
+    redirectUrl = url.resolve(currentUrl, location);
+  }
+  catch (cause) {
+    this.emit("error", new RedirectionError(cause));
+    return;
+  }
 
-    // Evaluate the beforeRedirect callback
-    if (typeof this._options.beforeRedirect === "function") {
-      var responseDetails = { headers: response.headers };
-      try {
-        this._options.beforeRedirect.call(null, this._options, responseDetails);
-      }
-      catch (err) {
-        this.emit("error", err);
-        return;
-      }
-      this._sanitizeOptions(this._options);
-    }
+  // Create the redirected request
+  debug("redirecting to", redirectUrl);
+  this._isRedirect = true;
+  var redirectUrlParts = url.parse(redirectUrl);
+  Object.assign(this._options, redirectUrlParts);
 
-    // Perform the redirected request
+  // Drop confidential headers when redirecting to a less secure protocol
+  // or to a different domain that is not a superdomain
+  if (redirectUrlParts.protocol !== currentUrlParts.protocol &&
+     redirectUrlParts.protocol !== "https:" ||
+     redirectUrlParts.host !== currentHost &&
+     !isSubdomain(redirectUrlParts.host, currentHost)) {
+    removeMatchingHeaders(/^(?:authorization|cookie)$/i, this._options.headers);
+  }
+
+  // Evaluate the beforeRedirect callback
+  if (typeof this._options.beforeRedirect === "function") {
+    var responseDetails = { headers: response.headers };
     try {
-      this._performRequest();
+      this._options.beforeRedirect.call(null, this._options, responseDetails);
     }
-    catch (cause) {
-      this.emit("error", new RedirectionError(cause));
+    catch (err) {
+      this.emit("error", err);
+      return;
     }
+    this._sanitizeOptions(this._options);
   }
-  else {
-    // The response is not a redirect; return it as-is
-    response.responseUrl = this._currentUrl;
-    response.redirects = this._redirects;
-    this.emit("response", response);
 
-    // Clean up
-    this._requestBodyBuffers = [];
+  // Perform the redirected request
+  try {
+    this._performRequest();
   }
+  catch (cause) {
+    this.emit("error", new RedirectionError(cause));
+  }
 };
@@ -564,6 +568,3 @@
 
-function isSameOrSubdomain(subdomain, domain) {
-  if (subdomain === domain) {
-    return true;
-  }
+function isSubdomain(subdomain, domain) {
   const dot = subdomain.length - domain.length - 1;
@@ -570,0 +571,0 @@ return dot > 0 && subdomain[dot] === "." && subdomain.endsWith(domain);

package.json

 {
   "name": "follow-redirects",
-  "version": "1.14.8",
+  "version": "1.14.9",
   "description": "HTTP and HTTPS modules that follow redirects.",
@@ -5,0 +5,0 @@ "license": "MIT",

No alert changes

Worsened metrics

Total package byte prevSize

26596

decreased by-0.07%

Lines of code

528

decreased by-0.19%

No dependency changes