diff -r 000000000000 -r 6474c204b198 embedding/components/windowwatcher/public/nsPromptUtils.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/embedding/components/windowwatcher/public/nsPromptUtils.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,139 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef NSPROMPTUTILS_H_
+#define NSPROMPTUTILS_H_
+
+#include "nsIHttpChannel.h"
+
+/**
+ * @file
+ * This file defines some helper functions that simplify interaction
+ * with authentication prompts.
+ */
+
+/**
+ * Given a username (possibly in DOMAIN\user form) and password, parses the
+ * domain out of the username if necessary and sets domain, username and
+ * password on the auth information object.
+ */
+inline void
+NS_SetAuthInfo(nsIAuthInformation* aAuthInfo, const nsString& user,
+               const nsString& password)
+{
+  uint32_t flags;
+  aAuthInfo->GetFlags(&flags);
+  if (flags & nsIAuthInformation::NEED_DOMAIN) {
+    // Domain is separated from username by a backslash
+    int32_t idx = user.FindChar(char16_t('\\'));
+    if (idx == kNotFound) {
+      aAuthInfo->SetUsername(user);
+    } else {
+      aAuthInfo->SetDomain(Substring(user, 0, idx));
+      aAuthInfo->SetUsername(Substring(user, idx + 1));
+    }
+  } else {
+    aAuthInfo->SetUsername(user);
+  }
+  aAuthInfo->SetPassword(password);
+}
+
+/**
+ * Gets the host and port from a channel and authentication info. This is the
+ * "logical" host and port for this authentication, i.e. for a proxy
+ * authentication it refers to the proxy, while for a host authentication it
+ * is the actual host.
+ *
+ * @param machineProcessing
+ *        When this parameter is true, the host will be returned in ASCII
+ *        (instead of UTF-8; this is relevant when IDN is used). In addition,
+ *        the port will be returned as the real port even when it was not
+ *        explicitly specified (when false, the port will be returned as -1 in
+ *        this case)
+ */
+inline void
+NS_GetAuthHostPort(nsIChannel* aChannel, nsIAuthInformation* aAuthInfo,
+                   bool machineProcessing, nsCString& host, int32_t* port)
+{
+  nsCOMPtr<nsIURI> uri;
+  nsresult rv = aChannel->GetURI(getter_AddRefs(uri));
+  if (NS_FAILED(rv))
+    return;
+
+  // Have to distinguish proxy auth and host auth here...
+  uint32_t flags;
+  aAuthInfo->GetFlags(&flags);
+  if (flags & nsIAuthInformation::AUTH_PROXY) {
+    nsCOMPtr<nsIProxiedChannel> proxied(do_QueryInterface(aChannel));
+    NS_ASSERTION(proxied, "proxy auth needs nsIProxiedChannel");
+
+    nsCOMPtr<nsIProxyInfo> info;
+    proxied->GetProxyInfo(getter_AddRefs(info));
+    NS_ASSERTION(info, "proxy auth needs nsIProxyInfo");
+
+    nsAutoCString idnhost;
+    info->GetHost(idnhost);
+    info->GetPort(port);
+
+    if (machineProcessing) {
+      nsCOMPtr<nsIIDNService> idnService =
+        do_GetService(NS_IDNSERVICE_CONTRACTID);
+      if (idnService) {
+        idnService->ConvertUTF8toACE(idnhost, host);
+      } else {
+        // Not much we can do here...
+        host = idnhost;
+      }
+    } else {
+      host = idnhost;
+    }
+  } else {
+    if (machineProcessing) {
+      uri->GetAsciiHost(host);
+      *port = NS_GetRealPort(uri);
+    } else {
+      uri->GetHost(host);
+      uri->GetPort(port);
+    }
+  }
+}
+
+/**
+ * Creates the key for looking up passwords in the password manager. This
+ * function uses the same format that Gecko functions have always used, thus
+ * ensuring backwards compatibility.
+ */
+inline void
+NS_GetAuthKey(nsIChannel* aChannel, nsIAuthInformation* aAuthInfo,
+              nsCString& key)
+{
+  // HTTP does this differently from other protocols
+  nsCOMPtr<nsIHttpChannel> http(do_QueryInterface(aChannel));
+  if (!http) {
+    nsCOMPtr<nsIURI> uri;
+    aChannel->GetURI(getter_AddRefs(uri));
+    uri->GetPrePath(key);
+    return;
+  }
+
+  // NOTE: For backwards-compatibility reasons, this must be the ASCII host.
+  nsCString host;
+  int32_t port = -1;
+
+  NS_GetAuthHostPort(aChannel, aAuthInfo, true, host, &port);
+
+  nsAutoString realm;
+  aAuthInfo->GetRealm(realm);
+  
+  // Now assemble the key: host:port (realm)
+  key.Append(host);
+  key.Append(':');
+  key.AppendInt(port);
+  key.AppendLiteral(" (");
+  AppendUTF16toUTF8(realm, key);
+  key.Append(')');
+}
+
+#endif
+