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nsHttpChannelAuthProvider.cpp
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nsHttpChannelAuthProvider.cpp
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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* vim:set expandtab ts=4 sw=4 sts=4 cin: */
/* 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 "mozilla/Preferences.h"
#include "nsHttpChannelAuthProvider.h"
#include "nsNetUtil.h"
#include "nsHttpHandler.h"
#include "nsIHttpAuthenticator.h"
#include "nsIAuthPrompt2.h"
#include "nsIAuthPromptProvider.h"
#include "nsIInterfaceRequestor.h"
#include "nsIInterfaceRequestorUtils.h"
#include "nsEscape.h"
#include "nsAuthInformationHolder.h"
#include "nsIStringBundle.h"
#include "nsIPrompt.h"
#include "netCore.h"
#include "nsIHttpAuthenticableChannel.h"
#include "nsIURI.h"
#include "nsContentUtils.h"
#include "nsServiceManagerUtils.h"
#include "nsILoadContext.h"
#include "nsIURL.h"
#include "mozilla/Telemetry.h"
#include "mozilla-config.h"
#include "plvmx.h"
namespace mozilla {
namespace net {
#define SUBRESOURCE_AUTH_DIALOG_DISALLOW_ALL 0
#define SUBRESOURCE_AUTH_DIALOG_DISALLOW_CROSS_ORIGIN 1
#define SUBRESOURCE_AUTH_DIALOG_ALLOW_ALL 2
#define HTTP_AUTH_DIALOG_TOP_LEVEL_DOC 0
#define HTTP_AUTH_DIALOG_SAME_ORIGIN_SUBRESOURCE 1
#define HTTP_AUTH_DIALOG_CROSS_ORIGIN_SUBRESOURCE 2
static void
GetOriginAttributesSuffix(nsIChannel* aChan, nsACString &aSuffix)
{
NeckoOriginAttributes oa;
// Deliberately ignoring the result and going with defaults
if (aChan) {
NS_GetOriginAttributes(aChan, oa);
}
oa.CreateSuffix(aSuffix);
}
nsHttpChannelAuthProvider::nsHttpChannelAuthProvider()
: mAuthChannel(nullptr)
, mIsPrivate(false)
, mProxyAuthContinuationState(nullptr)
, mAuthContinuationState(nullptr)
, mProxyAuth(false)
, mTriedProxyAuth(false)
, mTriedHostAuth(false)
, mSuppressDefensiveAuth(false)
, mHttpHandler(gHttpHandler)
{
}
nsHttpChannelAuthProvider::~nsHttpChannelAuthProvider()
{
MOZ_ASSERT(!mAuthChannel, "Disconnect wasn't called");
}
uint32_t nsHttpChannelAuthProvider::sAuthAllowPref =
SUBRESOURCE_AUTH_DIALOG_ALLOW_ALL;
void
nsHttpChannelAuthProvider::InitializePrefs()
{
MOZ_ASSERT(NS_IsMainThread());
mozilla::Preferences::AddUintVarCache(&sAuthAllowPref,
"network.auth.subresource-http-auth-allow",
SUBRESOURCE_AUTH_DIALOG_ALLOW_ALL);
}
NS_IMETHODIMP
nsHttpChannelAuthProvider::Init(nsIHttpAuthenticableChannel *channel)
{
MOZ_ASSERT(channel, "channel expected!");
mAuthChannel = channel;
nsresult rv = mAuthChannel->GetURI(getter_AddRefs(mURI));
if (NS_FAILED(rv)) return rv;
mAuthChannel->GetIsSSL(&mUsingSSL);
if (NS_FAILED(rv)) return rv;
rv = mURI->GetAsciiHost(mHost);
if (NS_FAILED(rv)) return rv;
// reject the URL if it doesn't specify a host
if (mHost.IsEmpty())
return NS_ERROR_MALFORMED_URI;
rv = mURI->GetPort(&mPort);
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsIChannel> bareChannel = do_QueryInterface(channel);
mIsPrivate = NS_UsePrivateBrowsing(bareChannel);
return NS_OK;
}
NS_IMETHODIMP
nsHttpChannelAuthProvider::ProcessAuthentication(uint32_t httpStatus,
bool SSLConnectFailed)
{
LOG(("nsHttpChannelAuthProvider::ProcessAuthentication "
"[this=%p channel=%p code=%u SSLConnectFailed=%d]\n",
this, mAuthChannel, httpStatus, SSLConnectFailed));
MOZ_ASSERT(mAuthChannel, "Channel not initialized");
nsCOMPtr<nsIProxyInfo> proxyInfo;
nsresult rv = mAuthChannel->GetProxyInfo(getter_AddRefs(proxyInfo));
if (NS_FAILED(rv)) return rv;
if (proxyInfo) {
mProxyInfo = do_QueryInterface(proxyInfo);
if (!mProxyInfo) return NS_ERROR_NO_INTERFACE;
}
nsAutoCString challenges;
mProxyAuth = (httpStatus == 407);
rv = PrepareForAuthentication(mProxyAuth);
if (NS_FAILED(rv))
return rv;
if (mProxyAuth) {
// only allow a proxy challenge if we have a proxy server configured.
// otherwise, we could inadvertently expose the user's proxy
// credentials to an origin server. We could attempt to proceed as
// if we had received a 401 from the server, but why risk flirting
// with trouble? IE similarly rejects 407s when a proxy server is
// not configured, so there's no reason not to do the same.
if (!UsingHttpProxy()) {
LOG(("rejecting 407 when proxy server not configured!\n"));
return NS_ERROR_UNEXPECTED;
}
if (UsingSSL() && !SSLConnectFailed) {
// we need to verify that this challenge came from the proxy
// server itself, and not some server on the other side of the
// SSL tunnel.
LOG(("rejecting 407 from origin server!\n"));
return NS_ERROR_UNEXPECTED;
}
rv = mAuthChannel->GetProxyChallenges(challenges);
}
else
rv = mAuthChannel->GetWWWChallenges(challenges);
if (NS_FAILED(rv)) return rv;
nsAutoCString creds;
rv = GetCredentials(challenges.get(), mProxyAuth, creds);
if (rv == NS_ERROR_IN_PROGRESS)
return rv;
if (NS_FAILED(rv))
LOG(("unable to authenticate\n"));
else {
// set the authentication credentials
if (mProxyAuth)
rv = mAuthChannel->SetProxyCredentials(creds);
else
rv = mAuthChannel->SetWWWCredentials(creds);
}
return rv;
}
NS_IMETHODIMP
nsHttpChannelAuthProvider::AddAuthorizationHeaders()
{
LOG(("nsHttpChannelAuthProvider::AddAuthorizationHeaders? "
"[this=%p channel=%p]\n", this, mAuthChannel));
MOZ_ASSERT(mAuthChannel, "Channel not initialized");
nsCOMPtr<nsIProxyInfo> proxyInfo;
nsresult rv = mAuthChannel->GetProxyInfo(getter_AddRefs(proxyInfo));
if (NS_FAILED(rv)) return rv;
if (proxyInfo) {
mProxyInfo = do_QueryInterface(proxyInfo);
if (!mProxyInfo) return NS_ERROR_NO_INTERFACE;
}
uint32_t loadFlags;
rv = mAuthChannel->GetLoadFlags(&loadFlags);
if (NS_FAILED(rv)) return rv;
// this getter never fails
nsHttpAuthCache *authCache = gHttpHandler->AuthCache(mIsPrivate);
// check if proxy credentials should be sent
const char *proxyHost = ProxyHost();
if (proxyHost && UsingHttpProxy())
SetAuthorizationHeader(authCache, nsHttp::Proxy_Authorization,
"http", proxyHost, ProxyPort(),
nullptr, // proxy has no path
mProxyIdent);
if (loadFlags & nsIRequest::LOAD_ANONYMOUS) {
LOG(("Skipping Authorization header for anonymous load\n"));
return NS_OK;
}
// check if server credentials should be sent
nsAutoCString path, scheme;
if (NS_SUCCEEDED(GetCurrentPath(path)) &&
NS_SUCCEEDED(mURI->GetScheme(scheme))) {
SetAuthorizationHeader(authCache, nsHttp::Authorization,
scheme.get(),
Host(),
Port(),
path.get(),
mIdent);
}
return NS_OK;
}
NS_IMETHODIMP
nsHttpChannelAuthProvider::CheckForSuperfluousAuth()
{
LOG(("nsHttpChannelAuthProvider::CheckForSuperfluousAuth? "
"[this=%p channel=%p]\n", this, mAuthChannel));
MOZ_ASSERT(mAuthChannel, "Channel not initialized");
// we've been called because it has been determined that this channel is
// getting loaded without taking the userpass from the URL. if the URL
// contained a userpass, then (provided some other conditions are true),
// we'll give the user an opportunity to abort the channel as this might be
// an attempt to spoof a different site (see bug 232567).
if (!ConfirmAuth(NS_LITERAL_STRING("SuperfluousAuth"), true)) {
// calling cancel here sets our mStatus and aborts the HTTP
// transaction, which prevents OnDataAvailable events.
mAuthChannel->Cancel(NS_ERROR_ABORT);
return NS_ERROR_ABORT;
}
return NS_OK;
}
NS_IMETHODIMP
nsHttpChannelAuthProvider::Cancel(nsresult status)
{
MOZ_ASSERT(mAuthChannel, "Channel not initialized");
if (mAsyncPromptAuthCancelable) {
mAsyncPromptAuthCancelable->Cancel(status);
mAsyncPromptAuthCancelable = nullptr;
}
return NS_OK;
}
NS_IMETHODIMP
nsHttpChannelAuthProvider::Disconnect(nsresult status)
{
mAuthChannel = nullptr;
if (mAsyncPromptAuthCancelable) {
mAsyncPromptAuthCancelable->Cancel(status);
mAsyncPromptAuthCancelable = nullptr;
}
NS_IF_RELEASE(mProxyAuthContinuationState);
NS_IF_RELEASE(mAuthContinuationState);
return NS_OK;
}
// buf contains "domain\user"
static void
ParseUserDomain(char16_t *buf,
const char16_t **user,
const char16_t **domain)
{
char16_t *p = buf;
while (*p && *p != '\\') ++p;
if (!*p)
return;
*p = '\0';
*domain = buf;
*user = p + 1;
}
// helper function for setting identity from raw user:pass
static void
SetIdent(nsHttpAuthIdentity &ident,
uint32_t authFlags,
char16_t *userBuf,
char16_t *passBuf)
{
const char16_t *user = userBuf;
const char16_t *domain = nullptr;
if (authFlags & nsIHttpAuthenticator::IDENTITY_INCLUDES_DOMAIN)
ParseUserDomain(userBuf, &user, &domain);
ident.Set(domain, user, passBuf);
}
// helper function for getting an auth prompt from an interface requestor
static void
GetAuthPrompt(nsIInterfaceRequestor *ifreq, bool proxyAuth,
nsIAuthPrompt2 **result)
{
if (!ifreq)
return;
uint32_t promptReason;
if (proxyAuth)
promptReason = nsIAuthPromptProvider::PROMPT_PROXY;
else
promptReason = nsIAuthPromptProvider::PROMPT_NORMAL;
nsCOMPtr<nsIAuthPromptProvider> promptProvider = do_GetInterface(ifreq);
if (promptProvider)
promptProvider->GetAuthPrompt(promptReason,
NS_GET_IID(nsIAuthPrompt2),
reinterpret_cast<void**>(result));
else
NS_QueryAuthPrompt2(ifreq, result);
}
// generate credentials for the given challenge, and update the auth cache.
nsresult
nsHttpChannelAuthProvider::GenCredsAndSetEntry(nsIHttpAuthenticator *auth,
bool proxyAuth,
const char *scheme,
const char *host,
int32_t port,
const char *directory,
const char *realm,
const char *challenge,
const nsHttpAuthIdentity &ident,
nsCOMPtr<nsISupports> &sessionState,
char **result)
{
nsresult rv;
uint32_t authFlags;
rv = auth->GetAuthFlags(&authFlags);
if (NS_FAILED(rv)) return rv;
nsISupports *ss = sessionState;
// set informations that depend on whether
// we're authenticating against a proxy
// or a webserver
nsISupports **continuationState;
if (proxyAuth) {
continuationState = &mProxyAuthContinuationState;
} else {
continuationState = &mAuthContinuationState;
}
uint32_t generateFlags;
rv = auth->GenerateCredentials(mAuthChannel,
challenge,
proxyAuth,
ident.Domain(),
ident.User(),
ident.Password(),
&ss,
&*continuationState,
&generateFlags,
result);
sessionState.swap(ss);
if (NS_FAILED(rv)) return rv;
// don't log this in release build since it could contain sensitive info.
#ifdef DEBUG
LOG(("generated creds: %s\n", *result));
#endif
// find out if this authenticator allows reuse of credentials and/or
// challenge.
bool saveCreds =
0 != (authFlags & nsIHttpAuthenticator::REUSABLE_CREDENTIALS);
bool saveChallenge =
0 != (authFlags & nsIHttpAuthenticator::REUSABLE_CHALLENGE);
bool saveIdentity =
0 == (generateFlags & nsIHttpAuthenticator::USING_INTERNAL_IDENTITY);
// this getter never fails
nsHttpAuthCache *authCache = gHttpHandler->AuthCache(mIsPrivate);
nsCOMPtr<nsIChannel> chan = do_QueryInterface(mAuthChannel);
nsAutoCString suffix;
GetOriginAttributesSuffix(chan, suffix);
// create a cache entry. we do this even though we don't yet know that
// these credentials are valid b/c we need to avoid prompting the user
// more than once in case the credentials are valid.
//
// if the credentials are not reusable, then we don't bother sticking
// them in the auth cache.
rv = authCache->SetAuthEntry(scheme, host, port, directory, realm,
saveCreds ? *result : nullptr,
saveChallenge ? challenge : nullptr,
suffix,
saveIdentity ? &ident : nullptr,
sessionState);
return rv;
}
nsresult
nsHttpChannelAuthProvider::PrepareForAuthentication(bool proxyAuth)
{
LOG(("nsHttpChannelAuthProvider::PrepareForAuthentication "
"[this=%p channel=%p]\n", this, mAuthChannel));
if (!proxyAuth) {
// reset the current proxy continuation state because our last
// authentication attempt was completed successfully.
NS_IF_RELEASE(mProxyAuthContinuationState);
LOG((" proxy continuation state has been reset"));
}
if (!UsingHttpProxy() || mProxyAuthType.IsEmpty())
return NS_OK;
// We need to remove any Proxy_Authorization header left over from a
// non-request based authentication handshake (e.g., for NTLM auth).
nsAutoCString contractId;
contractId.Assign(NS_HTTP_AUTHENTICATOR_CONTRACTID_PREFIX);
contractId.Append(mProxyAuthType);
nsresult rv;
nsCOMPtr<nsIHttpAuthenticator> precedingAuth =
do_GetService(contractId.get(), &rv);
if (NS_FAILED(rv))
return rv;
uint32_t precedingAuthFlags;
rv = precedingAuth->GetAuthFlags(&precedingAuthFlags);
if (NS_FAILED(rv))
return rv;
if (!(precedingAuthFlags & nsIHttpAuthenticator::REQUEST_BASED)) {
nsAutoCString challenges;
rv = mAuthChannel->GetProxyChallenges(challenges);
if (NS_FAILED(rv)) {
// delete the proxy authorization header because we weren't
// asked to authenticate
rv = mAuthChannel->SetProxyCredentials(EmptyCString());
if (NS_FAILED(rv)) return rv;
LOG((" cleared proxy authorization header"));
}
}
return NS_OK;
}
nsresult
nsHttpChannelAuthProvider::GetCredentials(const char *challenges,
bool proxyAuth,
nsAFlatCString &creds)
{
nsCOMPtr<nsIHttpAuthenticator> auth;
nsAutoCString challenge;
nsCString authType; // force heap allocation to enable string sharing since
// we'll be assigning this value into mAuthType.
// set informations that depend on whether we're authenticating against a
// proxy or a webserver
nsISupports **currentContinuationState;
nsCString *currentAuthType;
if (proxyAuth) {
currentContinuationState = &mProxyAuthContinuationState;
currentAuthType = &mProxyAuthType;
} else {
currentContinuationState = &mAuthContinuationState;
currentAuthType = &mAuthType;
}
nsresult rv = NS_ERROR_NOT_AVAILABLE;
bool gotCreds = false;
// figure out which challenge we can handle and which authenticator to use.
for (const char *eol = challenges - 1; eol; ) {
const char *p = eol + 1;
// get the challenge string (LF separated -- see nsHttpHeaderArray)
if ((eol = VMX_STRCHR(p, '\n')) != nullptr)
challenge.Assign(p, eol - p);
else
challenge.Assign(p);
rv = GetAuthenticator(challenge.get(), authType, getter_AddRefs(auth));
if (NS_SUCCEEDED(rv)) {
//
// if we've already selected an auth type from a previous challenge
// received while processing this channel, then skip others until
// we find a challenge corresponding to the previously tried auth
// type.
//
if (!currentAuthType->IsEmpty() && authType != *currentAuthType)
continue;
//
// we allow the routines to run all the way through before we
// decide if they are valid.
//
// we don't worry about the auth cache being altered because that
// would have been the last step, and if the error is from updating
// the authcache it wasn't really altered anyway. -CTN
//
// at this point the code is really only useful for client side
// errors (it will not automatically fail over to do a different
// auth type if the server keeps rejecting what is being sent, even
// if a particular auth method only knows 1 thing, like a
// non-identity based authentication method)
//
rv = GetCredentialsForChallenge(challenge.get(), authType.get(),
proxyAuth, auth, creds);
if (NS_SUCCEEDED(rv)) {
gotCreds = true;
*currentAuthType = authType;
break;
}
else if (rv == NS_ERROR_IN_PROGRESS) {
// authentication prompt has been invoked and result is
// expected asynchronously, save current challenge being
// processed and all remaining challenges to use later in
// OnAuthAvailable and now immediately return
mCurrentChallenge = challenge;
mRemainingChallenges = eol ? eol+1 : nullptr;
return rv;
}
// reset the auth type and continuation state
NS_IF_RELEASE(*currentContinuationState);
currentAuthType->Truncate();
}
}
if (!gotCreds && !currentAuthType->IsEmpty()) {
// looks like we never found the auth type we were looking for.
// reset the auth type and continuation state, and try again.
currentAuthType->Truncate();
NS_IF_RELEASE(*currentContinuationState);
rv = GetCredentials(challenges, proxyAuth, creds);
}
return rv;
}
nsresult
nsHttpChannelAuthProvider::GetAuthorizationMembers(bool proxyAuth,
nsCSubstring& scheme,
const char*& host,
int32_t& port,
nsCSubstring& path,
nsHttpAuthIdentity*& ident,
nsISupports**& continuationState)
{
if (proxyAuth) {
MOZ_ASSERT (UsingHttpProxy(),
"proxyAuth is true, but no HTTP proxy is configured!");
host = ProxyHost();
port = ProxyPort();
ident = &mProxyIdent;
scheme.AssignLiteral("http");
continuationState = &mProxyAuthContinuationState;
}
else {
host = Host();
port = Port();
ident = &mIdent;
nsresult rv;
rv = GetCurrentPath(path);
if (NS_FAILED(rv)) return rv;
rv = mURI->GetScheme(scheme);
if (NS_FAILED(rv)) return rv;
continuationState = &mAuthContinuationState;
}
return NS_OK;
}
nsresult
nsHttpChannelAuthProvider::GetCredentialsForChallenge(const char *challenge,
const char *authType,
bool proxyAuth,
nsIHttpAuthenticator *auth,
nsAFlatCString &creds)
{
LOG(("nsHttpChannelAuthProvider::GetCredentialsForChallenge "
"[this=%p channel=%p proxyAuth=%d challenges=%s]\n",
this, mAuthChannel, proxyAuth, challenge));
// this getter never fails
nsHttpAuthCache *authCache = gHttpHandler->AuthCache(mIsPrivate);
uint32_t authFlags;
nsresult rv = auth->GetAuthFlags(&authFlags);
if (NS_FAILED(rv)) return rv;
nsAutoCString realm;
ParseRealm(challenge, realm);
// if no realm, then use the auth type as the realm. ToUpperCase so the
// ficticious realm stands out a bit more.
// XXX this will cause some single signon misses!
// XXX this was meant to be used with NTLM, which supplies no realm.
/*
if (realm.IsEmpty()) {
realm = authType;
ToUpperCase(realm);
}
*/
// set informations that depend on whether
// we're authenticating against a proxy
// or a webserver
const char *host;
int32_t port;
nsHttpAuthIdentity *ident;
nsAutoCString path, scheme;
bool identFromURI = false;
nsISupports **continuationState;
rv = GetAuthorizationMembers(proxyAuth, scheme, host, port,
path, ident, continuationState);
if (NS_FAILED(rv)) return rv;
uint32_t loadFlags;
rv = mAuthChannel->GetLoadFlags(&loadFlags);
if (NS_FAILED(rv)) return rv;
if (!proxyAuth) {
// if this is the first challenge, then try using the identity
// specified in the URL.
if (mIdent.IsEmpty()) {
GetIdentityFromURI(authFlags, mIdent);
identFromURI = !mIdent.IsEmpty();
}
if ((loadFlags & nsIRequest::LOAD_ANONYMOUS) && !identFromURI) {
LOG(("Skipping authentication for anonymous non-proxy request\n"));
return NS_ERROR_NOT_AVAILABLE;
}
// Let explicit URL credentials pass
// regardless of the LOAD_ANONYMOUS flag
}
else if ((loadFlags & nsIRequest::LOAD_ANONYMOUS) && !UsingHttpProxy()) {
LOG(("Skipping authentication for anonymous non-proxy request\n"));
return NS_ERROR_NOT_AVAILABLE;
}
nsCOMPtr<nsIChannel> chan = do_QueryInterface(mAuthChannel);
nsAutoCString suffix;
GetOriginAttributesSuffix(chan, suffix);
//
// if we already tried some credentials for this transaction, then
// we need to possibly clear them from the cache, unless the credentials
// in the cache have changed, in which case we'd want to give them a
// try instead.
//
nsHttpAuthEntry *entry = nullptr;
authCache->GetAuthEntryForDomain(scheme.get(), host, port,
realm.get(), suffix, &entry);
// hold reference to the auth session state (in case we clear our
// reference to the entry).
nsCOMPtr<nsISupports> sessionStateGrip;
if (entry)
sessionStateGrip = entry->mMetaData;
// for digest auth, maybe our cached nonce value simply timed out...
bool identityInvalid;
nsISupports *sessionState = sessionStateGrip;
rv = auth->ChallengeReceived(mAuthChannel,
challenge,
proxyAuth,
&sessionState,
&*continuationState,
&identityInvalid);
sessionStateGrip.swap(sessionState);
if (NS_FAILED(rv)) return rv;
LOG((" identity invalid = %d\n", identityInvalid));
if (identityInvalid) {
if (entry) {
if (ident->Equals(entry->Identity())) {
if (!identFromURI) {
LOG((" clearing bad auth cache entry\n"));
// ok, we've already tried this user identity, so clear the
// corresponding entry from the auth cache.
authCache->ClearAuthEntry(scheme.get(), host,
port, realm.get(),
suffix);
entry = nullptr;
ident->Clear();
}
}
else if (!identFromURI ||
(nsCRT::strcmp(ident->User(),
entry->Identity().User()) == 0 &&
!(loadFlags &
(nsIChannel::LOAD_ANONYMOUS |
nsIChannel::LOAD_EXPLICIT_CREDENTIALS)))) {
LOG((" taking identity from auth cache\n"));
// the password from the auth cache is more likely to be
// correct than the one in the URL. at least, we know that it
// works with the given username. it is possible for a server
// to distinguish logons based on the supplied password alone,
// but that would be quite unusual... and i don't think we need
// to worry about such unorthodox cases.
ident->Set(entry->Identity());
identFromURI = false;
if (entry->Creds()[0] != '\0') {
LOG((" using cached credentials!\n"));
creds.Assign(entry->Creds());
return entry->AddPath(path.get());
}
}
}
else if (!identFromURI) {
// hmm... identity invalid, but no auth entry! the realm probably
// changed (see bug 201986).
ident->Clear();
}
if (!entry && ident->IsEmpty()) {
uint32_t level = nsIAuthPrompt2::LEVEL_NONE;
if (mUsingSSL)
level = nsIAuthPrompt2::LEVEL_SECURE;
else if (authFlags & nsIHttpAuthenticator::IDENTITY_ENCRYPTED)
level = nsIAuthPrompt2::LEVEL_PW_ENCRYPTED;
// Depending on the pref setting, the authentication dialog may be
// blocked for all sub-resources, blocked for cross-origin
// sub-resources, or always allowed for sub-resources.
// For more details look at the bug 647010.
if (BlockPrompt()) {
return NS_ERROR_ABORT;
}
// at this point we are forced to interact with the user to get
// their username and password for this domain.
rv = PromptForIdentity(level, proxyAuth, realm.get(),
authType, authFlags, *ident);
if (NS_FAILED(rv)) return rv;
identFromURI = false;
}
}
if (identFromURI) {
// Warn the user before automatically using the identity from the URL
// to automatically log them into a site (see bug 232567).
if (!ConfirmAuth(NS_LITERAL_STRING("AutomaticAuth"), false)) {
// calling cancel here sets our mStatus and aborts the HTTP
// transaction, which prevents OnDataAvailable events.
mAuthChannel->Cancel(NS_ERROR_ABORT);
// this return code alone is not equivalent to Cancel, since
// it only instructs our caller that authentication failed.
// without an explicit call to Cancel, our caller would just
// load the page that accompanies the HTTP auth challenge.
return NS_ERROR_ABORT;
}
}
//
// get credentials for the given user:pass
//
// always store the credentials we're trying now so that they will be used
// on subsequent links. This will potentially remove good credentials from
// the cache. This is ok as we don't want to use cached credentials if the
// user specified something on the URI or in another manner. This is so
// that we don't transparently authenticate as someone they're not
// expecting to authenticate as.
//
nsXPIDLCString result;
rv = GenCredsAndSetEntry(auth, proxyAuth, scheme.get(), host, port,
path.get(), realm.get(), challenge, *ident,
sessionStateGrip, getter_Copies(result));
if (NS_SUCCEEDED(rv))
creds = result;
return rv;
}
bool
nsHttpChannelAuthProvider::BlockPrompt()
{
nsCOMPtr<nsIChannel> chan = do_QueryInterface(mAuthChannel);
nsCOMPtr<nsILoadInfo> loadInfo;
chan->GetLoadInfo(getter_AddRefs(loadInfo));
if (!loadInfo) {
return false;
}
if (gHttpHandler->IsTelemetryEnabled()) {
if (loadInfo->GetExternalContentPolicyType() == nsIContentPolicy::TYPE_DOCUMENT) {
Telemetry::Accumulate(Telemetry::HTTP_AUTH_DIALOG_STATS,
HTTP_AUTH_DIALOG_TOP_LEVEL_DOC);
} else {
nsCOMPtr<nsIPrincipal> loadingPrincipal = loadInfo->LoadingPrincipal();
if (loadingPrincipal) {
if (NS_SUCCEEDED(loadingPrincipal->CheckMayLoad(mURI, false, false))) {
Telemetry::Accumulate(Telemetry::HTTP_AUTH_DIALOG_STATS,
HTTP_AUTH_DIALOG_SAME_ORIGIN_SUBRESOURCE);
} else {
Telemetry::Accumulate(Telemetry::HTTP_AUTH_DIALOG_STATS,
HTTP_AUTH_DIALOG_CROSS_ORIGIN_SUBRESOURCE);
}
}
}
}
// Allow if it is the top-level document or xhr.
if ((loadInfo->GetExternalContentPolicyType() == nsIContentPolicy::TYPE_DOCUMENT) ||
(loadInfo->GetExternalContentPolicyType() == nsIContentPolicy::TYPE_XMLHTTPREQUEST)) {
return false;
}
switch (sAuthAllowPref) {
case SUBRESOURCE_AUTH_DIALOG_DISALLOW_ALL:
// Do not open the http-authentication credentials dialog for
// the sub-resources.
return true;
break;
case SUBRESOURCE_AUTH_DIALOG_DISALLOW_CROSS_ORIGIN:
// Do not open the http-authentication credentials dialog for
// the sub-resources only if they are not cross-origin.
{
nsCOMPtr<nsIPrincipal> loadingPrincipal =
loadInfo->LoadingPrincipal();
if (!loadingPrincipal) {
return false;
}
if (NS_FAILED(loadingPrincipal->CheckMayLoad(mURI, false, false))) {
return true;
}
}
break;
case SUBRESOURCE_AUTH_DIALOG_ALLOW_ALL:
// Allow the http-authentication dialog.
return false;
default:
// This is an invalid value.
MOZ_ASSERT(false, "A non valid value!");
}
return false;
}
inline void
GetAuthType(const char *challenge, nsCString &authType)
{
const char *p;
// get the challenge type
if ((p = VMX_STRCHR(challenge, ' ')) != nullptr)
authType.Assign(challenge, p - challenge);
else
authType.Assign(challenge);
}
nsresult
nsHttpChannelAuthProvider::GetAuthenticator(const char *challenge,
nsCString &authType,
nsIHttpAuthenticator **auth)
{
LOG(("nsHttpChannelAuthProvider::GetAuthenticator [this=%p channel=%p]\n",
this, mAuthChannel));
GetAuthType(challenge, authType);
// normalize to lowercase
ToLowerCase(authType);
nsAutoCString contractid;
contractid.Assign(NS_HTTP_AUTHENTICATOR_CONTRACTID_PREFIX);
contractid.Append(authType);
return CallGetService(contractid.get(), auth);
}
void
nsHttpChannelAuthProvider::GetIdentityFromURI(uint32_t authFlags,
nsHttpAuthIdentity &ident)
{
LOG(("nsHttpChannelAuthProvider::GetIdentityFromURI [this=%p channel=%p]\n",
this, mAuthChannel));
nsAutoString userBuf;
nsAutoString passBuf;
// XXX i18n
nsAutoCString buf;
mURI->GetUsername(buf);
if (!buf.IsEmpty()) {
NS_UnescapeURL(buf);
CopyASCIItoUTF16(buf, userBuf);
mURI->GetPassword(buf);
if (!buf.IsEmpty()) {
NS_UnescapeURL(buf);
CopyASCIItoUTF16(buf, passBuf);
}
}
if (!userBuf.IsEmpty()) {
SetIdent(ident, authFlags, (char16_t *) userBuf.get(),
(char16_t *) passBuf.get());
}
}
void
nsHttpChannelAuthProvider::ParseRealm(const char *challenge,
nsACString &realm)
{
//
// From RFC2617 section 1.2, the realm value is defined as such:
//
// realm = "realm" "=" realm-value
// realm-value = quoted-string
//
// but, we'll accept anything after the the "=" up to the first space, or
// end-of-line, if the string is not quoted.
//
const char *p = PL_strcasestr(challenge, "realm=");
if (p) {
bool has_quote = false;
p += 6;
if (*p == '"') {
has_quote = true;
p++;
}
const char *end;
if (has_quote) {
end = p;
while (*end) {
if (*end == '\\') {
// escaped character, store that one instead if not zero
if (!*++end)
break;
}
else if (*end == '\"')
// end of string
break;
realm.Append(*end);
++end;
}
}
else {
// realm given without quotes
end = VMX_STRCHR(p, ' ');
if (end)
realm.Assign(p, end - p);
else
realm.Assign(p);
}
}
}
class nsHTTPAuthInformation : public nsAuthInformationHolder {
public:
nsHTTPAuthInformation(uint32_t aFlags, const nsString& aRealm,
const nsCString& aAuthType)
: nsAuthInformationHolder(aFlags, aRealm, aAuthType) {}
void SetToHttpAuthIdentity(uint32_t authFlags,
nsHttpAuthIdentity& identity);
};