/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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/. */

// HttpLog.h should generally be included first
#include "HttpLog.h"

#include "nsHttpBasicAuth.h"
#include "plstr.h"
#include "nsString.h"
#include "mozilla/Base64.h"

namespace mozilla {
namespace net {

//-----------------------------------------------------------------------------
// nsHttpBasicAuth <public>
//-----------------------------------------------------------------------------

nsHttpBasicAuth::nsHttpBasicAuth() {}

nsHttpBasicAuth::~nsHttpBasicAuth() {}

//-----------------------------------------------------------------------------
// nsHttpBasicAuth::nsISupports
//-----------------------------------------------------------------------------

NS_IMPL_ISUPPORTS(nsHttpBasicAuth, nsIHttpAuthenticator)

//-----------------------------------------------------------------------------
// nsHttpBasicAuth::nsIHttpAuthenticator
//-----------------------------------------------------------------------------

NS_IMETHODIMP
nsHttpBasicAuth::ChallengeReceived(nsIHttpAuthenticableChannel *authChannel,
                                   const char *challenge, bool isProxyAuth,
                                   nsISupports **sessionState,
                                   nsISupports **continuationState,
                                   bool *identityInvalid) {
  // if challenged, then the username:password that was sent must
  // have been wrong.
  *identityInvalid = true;
  return NS_OK;
}
NS_IMETHODIMP
nsHttpBasicAuth::GenerateCredentialsAsync(
    nsIHttpAuthenticableChannel *authChannel,
    nsIHttpAuthenticatorCallback *aCallback, const char *challenge,
    bool isProxyAuth, const char16_t *domain, const char16_t *username,
    const char16_t *password, nsISupports *sessionState,
    nsISupports *continuationState, nsICancelable **aCancellable) {
  return NS_ERROR_NOT_IMPLEMENTED;
}

NS_IMETHODIMP
nsHttpBasicAuth::GenerateCredentials(
    nsIHttpAuthenticableChannel *authChannel, const char *challenge,
    bool isProxyAuth, const char16_t *domain, const char16_t *user,
    const char16_t *password, nsISupports **sessionState,
    nsISupports **continuationState, uint32_t *aFlags, char **creds)

{
  LOG(("nsHttpBasicAuth::GenerateCredentials [challenge=%s]\n", challenge));

  NS_ENSURE_ARG_POINTER(creds);

  *aFlags = 0;

  // we only know how to deal with Basic auth for http.
  bool isBasicAuth = !PL_strncasecmp(challenge, "basic", 5);
  NS_ENSURE_TRUE(isBasicAuth, NS_ERROR_UNEXPECTED);

  // we work with UTF-8 around here
  nsAutoCString userpass;
  CopyUTF16toUTF8(user, userpass);
  userpass.Append(':');  // always send a ':' (see bug 129565)
  if (password) {
    AppendUTF16toUTF8(password, userpass);
  }

  nsAutoCString authString;
  nsresult rv = Base64Encode(userpass, authString);
  NS_ENSURE_SUCCESS(rv, rv);

  authString.InsertLiteral("Basic ", 0);

  *creds = ToNewCString(authString);
  return NS_OK;
}

NS_IMETHODIMP
nsHttpBasicAuth::GetAuthFlags(uint32_t *flags) {
  *flags = REQUEST_BASED | REUSABLE_CREDENTIALS | REUSABLE_CHALLENGE;
  return NS_OK;
}

}  // namespace net
}  // namespace mozilla