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Mypal/netwerk/base/nsIOService.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* vim:set ts=4 sw=4 cindent et: */
/* 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/. */
#include "mozilla/ArrayUtils.h"
#include "mozilla/DebugOnly.h"
#include "nsIOService.h"
#include "nsIDOMNode.h"
#include "nsIProtocolHandler.h"
#include "nsIFileProtocolHandler.h"
#include "nscore.h"
#include "nsIURI.h"
#include "prprf.h"
#include "nsIErrorService.h"
#include "netCore.h"
#include "nsIObserverService.h"
#include "nsIPrefService.h"
#include "nsXPCOM.h"
#include "nsIProxiedProtocolHandler.h"
#include "nsIProxyInfo.h"
#include "nsEscape.h"
#include "nsNetUtil.h"
#include "nsNetCID.h"
#include "nsCRT.h"
#include "nsSecCheckWrapChannel.h"
#include "nsSimpleNestedURI.h"
#include "nsTArray.h"
#include "nsIConsoleService.h"
#include "nsIUploadChannel2.h"
#include "nsXULAppAPI.h"
#include "nsIScriptError.h"
#include "nsIScriptSecurityManager.h"
#include "nsIProtocolProxyCallback.h"
#include "nsICancelable.h"
#include "nsINetworkLinkService.h"
#include "nsPISocketTransportService.h"
#include "nsAsyncRedirectVerifyHelper.h"
#include "nsURLHelper.h"
#include "nsPIDNSService.h"
#include "nsIProtocolProxyService2.h"
#include "MainThreadUtils.h"
#include "nsINode.h"
#include "nsIWidget.h"
#include "nsThreadUtils.h"
#include "mozilla/LoadInfo.h"
#include "mozilla/net/NeckoCommon.h"
#include "mozilla/Services.h"
#include "mozilla/net/DNS.h"
#include "mozilla/ipc/URIUtils.h"
#include "mozilla/net/NeckoChild.h"
#include "mozilla/dom/ContentParent.h"
#include "ReferrerPolicy.h"
#include "nsContentSecurityManager.h"
#include "nsContentUtils.h"
#include "xpcpublic.h"
namespace mozilla {
namespace net {
#define PORT_PREF_PREFIX "network.security.ports."
#define PORT_PREF(x) PORT_PREF_PREFIX x
#define MANAGE_OFFLINE_STATUS_PREF "network.manage-offline-status"
#define OFFLINE_MIRRORS_CONNECTIVITY "network.offline-mirrors-connectivity"
// Nb: these have been misnomers since bug 715770 removed the buffer cache.
// "network.segment.count" and "network.segment.size" would be better names,
// but the old names are still used to preserve backward compatibility.
#define NECKO_BUFFER_CACHE_COUNT_PREF "network.buffer.cache.count"
#define NECKO_BUFFER_CACHE_SIZE_PREF "network.buffer.cache.size"
#define NETWORK_NOTIFY_CHANGED_PREF "network.notify.changed"
#define MAX_RECURSION_COUNT 50
nsIOService* gIOService = nullptr;
static bool gHasWarnedUploadChannel2;
static LazyLogModule gIOServiceLog("nsIOService");
#undef LOG
#define LOG(args) MOZ_LOG(gIOServiceLog, LogLevel::Debug, args)
// A general port blacklist. Connections to these ports will not be allowed
// unless the protocol overrides.
//
// TODO: I am sure that there are more ports to be added.
// This cut is based on the classic mozilla codebase
int16_t gBadPortList[] = {
1, // tcpmux
7, // echo
9, // discard
11, // systat
13, // daytime
15, // netstat
17, // qotd
19, // chargen
20, // ftp-data
21, // ftp-cntl
22, // ssh
23, // telnet
25, // smtp
37, // time
42, // name
43, // nicname
53, // domain
69, // TFTP
77, // priv-rjs
79, // finger
87, // ttylink
95, // supdup
101, // hostriame
102, // iso-tsap
103, // gppitnp
104, // acr-nema
109, // pop2
110, // pop3
111, // sunrpc
113, // auth
115, // sftp
117, // uucp-path
119, // nntp
123, // NTP
135, // loc-srv / epmap
137, // netbios
139, // netbios
143, // imap2
161, // SNMP
179, // BGP
389, // ldap
465, // smtp+ssl
512, // print / exec
513, // login
514, // shell
515, // printer
526, // tempo
530, // courier
531, // Chat
532, // netnews
540, // uucp
554, // rtsp
556, // remotefs
563, // nntp+ssl
587, // smtp (outgoing)
601, // syslog-conn
636, // ldap+ssl
993, // imap+ssl
995, // pop3+ssl
1719, // h323 (RAS)
1720, // h323 (hostcall)
1723, // pptp
2049, // nfs
3659, // apple-sasl / PasswordServer
4045, // lockd
5060, // sip
5061, // sips
6000, // x11
6566, // SANE
6665, // Alternate IRC [Apple addition]
6666, // Alternate IRC [Apple addition]
6667, // Standard IRC [Apple addition]
6668, // Alternate IRC [Apple addition]
6669, // Alternate IRC [Apple addition]
10080,// Amanda
0, // Sentinel value: This MUST be zero
};
static const char kProfileChangeNetTeardownTopic[] = "profile-change-net-teardown";
static const char kProfileChangeNetRestoreTopic[] = "profile-change-net-restore";
static const char kProfileDoChange[] = "profile-do-change";
// Necko buffer defaults
uint32_t nsIOService::gDefaultSegmentSize = 4096;
uint32_t nsIOService::gDefaultSegmentCount = 24;
bool nsIOService::sBlockToplevelDataUriNavigations = false;
bool nsIOService::sBlockFTPSubresources = false;
////////////////////////////////////////////////////////////////////////////////
nsIOService::nsIOService()
: mOffline(true)
, mOfflineForProfileChange(false)
, mManageLinkStatus(false)
, mConnectivity(true)
, mOfflineMirrorsConnectivity(true)
, mSettingOffline(false)
, mSetOfflineValue(false)
, mShutdown(false)
, mHttpHandlerAlreadyShutingDown(false)
, mNetworkLinkServiceInitialized(false)
, mChannelEventSinks(NS_CHANNEL_EVENT_SINK_CATEGORY)
, mNetworkNotifyChanged(true)
, mNetTearingDownStarted(0)
{
}
nsresult
nsIOService::Init()
{
nsresult rv;
// We need to get references to the DNS service so that we can shut it
// down later. If we wait until the nsIOService is being shut down,
// GetService will fail at that point.
mDNSService = do_GetService(NS_DNSSERVICE_CONTRACTID, &rv);
if (NS_FAILED(rv)) {
NS_WARNING("failed to get DNS service");
return rv;
}
// XXX hack until xpidl supports error info directly (bug 13423)
nsCOMPtr<nsIErrorService> errorService = do_GetService(NS_ERRORSERVICE_CONTRACTID);
if (errorService) {
errorService->RegisterErrorStringBundle(NS_ERROR_MODULE_NETWORK, NECKO_MSGS_URL);
}
else
NS_WARNING("failed to get error service");
// setup our bad port list stuff
for(int i=0; gBadPortList[i]; i++)
mRestrictedPortList.AppendElement(gBadPortList[i]);
// Further modifications to the port list come from prefs
nsCOMPtr<nsIPrefBranch> prefBranch;
GetPrefBranch(getter_AddRefs(prefBranch));
if (prefBranch) {
prefBranch->AddObserver(PORT_PREF_PREFIX, this, true);
prefBranch->AddObserver(MANAGE_OFFLINE_STATUS_PREF, this, true);
prefBranch->AddObserver(NECKO_BUFFER_CACHE_COUNT_PREF, this, true);
prefBranch->AddObserver(NECKO_BUFFER_CACHE_SIZE_PREF, this, true);
prefBranch->AddObserver(NETWORK_NOTIFY_CHANGED_PREF, this, true);
PrefsChanged(prefBranch);
}
// Register for profile change notifications
nsCOMPtr<nsIObserverService> observerService = services::GetObserverService();
if (observerService) {
observerService->AddObserver(this, kProfileChangeNetTeardownTopic, true);
observerService->AddObserver(this, kProfileChangeNetRestoreTopic, true);
observerService->AddObserver(this, kProfileDoChange, true);
observerService->AddObserver(this, NS_XPCOM_SHUTDOWN_OBSERVER_ID, true);
observerService->AddObserver(this, NS_NETWORK_LINK_TOPIC, true);
observerService->AddObserver(this, NS_WIDGET_WAKE_OBSERVER_TOPIC, true);
}
else
NS_WARNING("failed to get observer service");
Preferences::AddBoolVarCache(&sBlockToplevelDataUriNavigations,
"security.data_uri.block_toplevel_data_uri_navigations", false);
Preferences::AddBoolVarCache(&sBlockFTPSubresources,
"security.block_ftp_subresources", true);
Preferences::AddBoolVarCache(&mOfflineMirrorsConnectivity, OFFLINE_MIRRORS_CONNECTIVITY, true);
gIOService = this;
InitializeNetworkLinkService();
SetOffline(false);
return NS_OK;
}
nsIOService::~nsIOService()
{
gIOService = nullptr;
}
nsresult
nsIOService::InitializeSocketTransportService()
{
nsresult rv = NS_OK;
if (!mSocketTransportService) {
mSocketTransportService = do_GetService(NS_SOCKETTRANSPORTSERVICE_CONTRACTID, &rv);
if (NS_FAILED(rv)) {
NS_WARNING("failed to get socket transport service");
}
}
if (mSocketTransportService) {
rv = mSocketTransportService->Init();
NS_ASSERTION(NS_SUCCEEDED(rv), "socket transport service init failed");
mSocketTransportService->SetOffline(false);
}
return rv;
}
nsresult
nsIOService::InitializeNetworkLinkService()
{
nsresult rv = NS_OK;
if (mNetworkLinkServiceInitialized)
return rv;
if (!NS_IsMainThread()) {
NS_WARNING("Network link service should be created on main thread");
return NS_ERROR_FAILURE;
}
// go into managed mode if we can, and chrome process
if (XRE_IsParentProcess())
{
mNetworkLinkService = do_GetService(NS_NETWORK_LINK_SERVICE_CONTRACTID, &rv);
}
if (mNetworkLinkService) {
mNetworkLinkServiceInitialized = true;
}
// After initializing the networkLinkService, query the connectivity state
OnNetworkLinkEvent(NS_NETWORK_LINK_DATA_UNKNOWN);
return rv;
}
nsIOService*
nsIOService::GetInstance() {
if (!gIOService) {
gIOService = new nsIOService();
if (!gIOService)
return nullptr;
NS_ADDREF(gIOService);
nsresult rv = gIOService->Init();
if (NS_FAILED(rv)) {
NS_RELEASE(gIOService);
return nullptr;
}
return gIOService;
}
NS_ADDREF(gIOService);
return gIOService;
}
NS_IMPL_ISUPPORTS(nsIOService,
nsIIOService,
nsIIOService2,
nsINetUtil,
nsISpeculativeConnect,
nsIObserver,
nsIIOServiceInternal,
nsISupportsWeakReference)
////////////////////////////////////////////////////////////////////////////////
nsresult
nsIOService::AsyncOnChannelRedirect(nsIChannel* oldChan, nsIChannel* newChan,
uint32_t flags,
nsAsyncRedirectVerifyHelper *helper)
{
// This is silly. I wish there was a simpler way to get at the global
// reference of the contentSecurityManager. But it lives in the XPCOM
// service registry.
nsCOMPtr<nsIChannelEventSink> sink =
do_GetService(NS_CONTENTSECURITYMANAGER_CONTRACTID);
if (sink) {
nsresult rv = helper->DelegateOnChannelRedirect(sink, oldChan,
newChan, flags);
if (NS_FAILED(rv))
return rv;
}
// Finally, our category
nsCOMArray<nsIChannelEventSink> entries;
mChannelEventSinks.GetEntries(entries);
int32_t len = entries.Count();
for (int32_t i = 0; i < len; ++i) {
nsresult rv = helper->DelegateOnChannelRedirect(entries[i], oldChan,
newChan, flags);
if (NS_FAILED(rv))
return rv;
}
return NS_OK;
}
nsresult
nsIOService::CacheProtocolHandler(const char *scheme, nsIProtocolHandler *handler)
{
MOZ_ASSERT(NS_IsMainThread());
for (unsigned int i=0; i<NS_N(gScheme); i++)
{
if (!nsCRT::strcasecmp(scheme, gScheme[i]))
{
nsresult rv;
NS_ASSERTION(!mWeakHandler[i], "Protocol handler already cached");
// Make sure the handler supports weak references.
nsCOMPtr<nsISupportsWeakReference> factoryPtr = do_QueryInterface(handler, &rv);
if (!factoryPtr)
{
// Don't cache handlers that don't support weak reference as
// there is real danger of a circular reference.
#ifdef DEBUG_dp
printf("DEBUG: %s protcol handler doesn't support weak ref. Not cached.\n", scheme);
#endif /* DEBUG_dp */
return NS_ERROR_FAILURE;
}
mWeakHandler[i] = do_GetWeakReference(handler);
return NS_OK;
}
}
return NS_ERROR_FAILURE;
}
nsresult
nsIOService::GetCachedProtocolHandler(const char *scheme, nsIProtocolHandler **result, uint32_t start, uint32_t end)
{
MOZ_ASSERT(NS_IsMainThread());
uint32_t len = end - start - 1;
for (unsigned int i=0; i<NS_N(gScheme); i++)
{
if (!mWeakHandler[i])
continue;
// handle unterminated strings
// start is inclusive, end is exclusive, len = end - start - 1
if (end ? (!nsCRT::strncasecmp(scheme + start, gScheme[i], len)
&& gScheme[i][len] == '\0')
: (!nsCRT::strcasecmp(scheme, gScheme[i])))
{
return CallQueryReferent(mWeakHandler[i].get(), result);
}
}
return NS_ERROR_FAILURE;
}
static bool
UsesExternalProtocolHandler(const char* aScheme)
{
if (NS_LITERAL_CSTRING("file").Equals(aScheme) ||
NS_LITERAL_CSTRING("chrome").Equals(aScheme) ||
NS_LITERAL_CSTRING("resource").Equals(aScheme)) {
// Don't allow file:, chrome: or resource: URIs to be handled with
// nsExternalProtocolHandler, since internally we rely on being able to
// use and read from these URIs.
return false;
}
nsAutoCString pref("network.protocol-handler.external.");
pref += aScheme;
return Preferences::GetBool(pref.get(), false);
}
NS_IMETHODIMP
nsIOService::GetProtocolHandler(const char* scheme, nsIProtocolHandler* *result)
{
nsresult rv;
NS_ENSURE_ARG_POINTER(scheme);
// XXX we may want to speed this up by introducing our own protocol
// scheme -> protocol handler mapping, avoiding the string manipulation
// and service manager stuff
rv = GetCachedProtocolHandler(scheme, result);
if (NS_SUCCEEDED(rv))
return rv;
if (!UsesExternalProtocolHandler(scheme)) {
nsAutoCString contractID(NS_NETWORK_PROTOCOL_CONTRACTID_PREFIX);
contractID += scheme;
ToLowerCase(contractID);
rv = CallGetService(contractID.get(), result);
if (NS_SUCCEEDED(rv)) {
CacheProtocolHandler(scheme, *result);
return rv;
}
#ifdef MOZ_ENABLE_GIO
// check to see whether GVFS can handle this URI scheme. if it can
// create a nsIURI for the "scheme:", then we assume it has support for
// the requested protocol. otherwise, we failover to using the default
// protocol handler.
rv = CallGetService(NS_NETWORK_PROTOCOL_CONTRACTID_PREFIX"moz-gio",
result);
if (NS_SUCCEEDED(rv)) {
nsAutoCString spec(scheme);
spec.Append(':');
nsIURI *uri;
rv = (*result)->NewURI(spec, nullptr, nullptr, &uri);
if (NS_SUCCEEDED(rv)) {
NS_RELEASE(uri);
return rv;
}
NS_RELEASE(*result);
}
#endif
}
// Okay we don't have a protocol handler to handle this url type, so use
// the default protocol handler. This will cause urls to get dispatched
// out to the OS ('cause we can't do anything with them) when we try to
// read from a channel created by the default protocol handler.
rv = CallGetService(NS_NETWORK_PROTOCOL_CONTRACTID_PREFIX"default",
result);
if (NS_FAILED(rv))
return NS_ERROR_UNKNOWN_PROTOCOL;
return rv;
}
NS_IMETHODIMP
nsIOService::ExtractScheme(const nsACString &inURI, nsACString &scheme)
{
return net_ExtractURLScheme(inURI, scheme);
}
NS_IMETHODIMP
nsIOService::GetProtocolFlags(const char* scheme, uint32_t *flags)
{
nsCOMPtr<nsIProtocolHandler> handler;
nsresult rv = GetProtocolHandler(scheme, getter_AddRefs(handler));
if (NS_FAILED(rv)) return rv;
// We can't call DoGetProtocolFlags here because we don't have a URI. This
// API is used by (and only used by) extensions, which is why it's still
// around. Calling this on a scheme with dynamic flags will throw.
rv = handler->GetProtocolFlags(flags);
return rv;
}
class AutoIncrement
{
public:
explicit AutoIncrement(uint32_t *var) : mVar(var)
{
++*var;
}
~AutoIncrement()
{
--*mVar;
}
private:
uint32_t *mVar;
};
nsresult
nsIOService::NewURI(const nsACString &aSpec, const char *aCharset, nsIURI *aBaseURI, nsIURI **result)
{
NS_ASSERTION(NS_IsMainThread(), "wrong thread");
static uint32_t recursionCount = 0;
if (recursionCount >= MAX_RECURSION_COUNT)
return NS_ERROR_MALFORMED_URI;
AutoIncrement inc(&recursionCount);
nsAutoCString scheme;
nsresult rv = ExtractScheme(aSpec, scheme);
if (NS_FAILED(rv)) {
// then aSpec is relative
if (!aBaseURI)
return NS_ERROR_MALFORMED_URI;
if (!aSpec.IsEmpty() && aSpec[0] == '#') {
// Looks like a reference instead of a fully-specified URI.
// --> initialize |uri| as a clone of |aBaseURI|, with ref appended.
return aBaseURI->CloneWithNewRef(aSpec, result);
}
rv = aBaseURI->GetScheme(scheme);
if (NS_FAILED(rv)) return rv;
}
// now get the handler for this scheme
nsCOMPtr<nsIProtocolHandler> handler;
rv = GetProtocolHandler(scheme.get(), getter_AddRefs(handler));
if (NS_FAILED(rv)) return rv;
return handler->NewURI(aSpec, aCharset, aBaseURI, result);
}
NS_IMETHODIMP
nsIOService::NewFileURI(nsIFile *file, nsIURI **result)
{
nsresult rv;
NS_ENSURE_ARG_POINTER(file);
nsCOMPtr<nsIProtocolHandler> handler;
rv = GetProtocolHandler("file", getter_AddRefs(handler));
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsIFileProtocolHandler> fileHandler( do_QueryInterface(handler, &rv) );
if (NS_FAILED(rv)) return rv;
return fileHandler->NewFileURI(file, result);
}
NS_IMETHODIMP
nsIOService::NewChannelFromURI2(nsIURI* aURI,
nsIDOMNode* aLoadingNode,
nsIPrincipal* aLoadingPrincipal,
nsIPrincipal* aTriggeringPrincipal,
uint32_t aSecurityFlags,
uint32_t aContentPolicyType,
nsIChannel** result)
{
return NewChannelFromURIWithProxyFlags2(aURI,
nullptr, // aProxyURI
0, // aProxyFlags
aLoadingNode,
aLoadingPrincipal,
aTriggeringPrincipal,
aSecurityFlags,
aContentPolicyType,
result);
}
/* ***** DEPRECATED *****
* please use NewChannelFromURI2 providing the right arguments for:
* * aLoadingNode
* * aLoadingPrincipal
* * aTriggeringPrincipal
* * aSecurityFlags
* * aContentPolicyType
*
* See nsIIoService.idl for a detailed description of those arguments
*/
NS_IMETHODIMP
nsIOService::NewChannelFromURI(nsIURI *aURI, nsIChannel **result)
{
NS_ASSERTION(false, "Deprecated, use NewChannelFromURI2 providing loadInfo arguments!");
const char16_t* params[] = {
u"nsIOService::NewChannelFromURI()",
u"nsIOService::NewChannelFromURI2()"
};
nsContentUtils::ReportToConsole(nsIScriptError::warningFlag,
NS_LITERAL_CSTRING("Security by Default"),
nullptr, // aDocument
nsContentUtils::eNECKO_PROPERTIES,
"APIDeprecationWarning",
params, ArrayLength(params));
return NewChannelFromURI2(aURI,
nullptr, // aLoadingNode
nsContentUtils::GetSystemPrincipal(),
nullptr, // aTriggeringPrincipal
nsILoadInfo::SEC_ALLOW_CROSS_ORIGIN_DATA_IS_NULL,
nsIContentPolicy::TYPE_OTHER,
result);
}
NS_IMETHODIMP
nsIOService::NewChannelFromURIWithLoadInfo(nsIURI* aURI,
nsILoadInfo* aLoadInfo,
nsIChannel** result)
{
return NewChannelFromURIWithProxyFlagsInternal(aURI,
nullptr, // aProxyURI
0, // aProxyFlags
aLoadInfo,
result);
}
nsresult
nsIOService::NewChannelFromURIWithProxyFlagsInternal(nsIURI* aURI,
nsIURI* aProxyURI,
uint32_t aProxyFlags,
nsILoadInfo* aLoadInfo,
nsIChannel** result)
{
nsresult rv;
NS_ENSURE_ARG_POINTER(aURI);
nsAutoCString scheme;
rv = aURI->GetScheme(scheme);
if (NS_FAILED(rv))
return rv;
nsCOMPtr<nsIProtocolHandler> handler;
rv = GetProtocolHandler(scheme.get(), getter_AddRefs(handler));
if (NS_FAILED(rv))
return rv;
uint32_t protoFlags;
rv = handler->DoGetProtocolFlags(aURI, &protoFlags);
if (NS_FAILED(rv))
return rv;
// Ideally we are creating new channels by calling NewChannel2 (NewProxiedChannel2).
// Keep in mind that Addons can implement their own Protocolhandlers, hence
// NewChannel2() might *not* be implemented.
// We do not want to break those addons, therefore we first try to create a channel
// calling NewChannel2(); if that fails:
// * we fall back to creating a channel by calling NewChannel()
// * wrap the addon channel
// * and attach the loadInfo to the channel wrapper
nsCOMPtr<nsIChannel> channel;
nsCOMPtr<nsIProxiedProtocolHandler> pph = do_QueryInterface(handler);
if (pph) {
rv = pph->NewProxiedChannel2(aURI, nullptr, aProxyFlags, aProxyURI,
aLoadInfo, getter_AddRefs(channel));
// if calling NewProxiedChannel2() fails we try to fall back to
// creating a new proxied channel by calling NewProxiedChannel().
if (NS_FAILED(rv)) {
rv = pph->NewProxiedChannel(aURI, nullptr, aProxyFlags, aProxyURI,
getter_AddRefs(channel));
NS_ENSURE_SUCCESS(rv, rv);
// The protocol handler does not implement NewProxiedChannel2, so
// maybe we need to wrap the channel (see comment in MaybeWrap
// function).
channel = nsSecCheckWrapChannel::MaybeWrap(channel, aLoadInfo);
}
}
else {
rv = handler->NewChannel2(aURI, aLoadInfo, getter_AddRefs(channel));
// if calling newChannel2() fails we try to fall back to
// creating a new channel by calling NewChannel().
if (NS_FAILED(rv)) {
rv = handler->NewChannel(aURI, getter_AddRefs(channel));
if (NS_FAILED(rv)) {
return rv;
}
// The protocol handler does not implement NewChannel2, so
// maybe we need to wrap the channel (see comment in MaybeWrap
// function).
channel = nsSecCheckWrapChannel::MaybeWrap(channel, aLoadInfo);
}
}
// Make sure that all the individual protocolhandlers attach a loadInfo.
if (aLoadInfo) {
// make sure we have the same instance of loadInfo on the newly created channel
nsCOMPtr<nsILoadInfo> loadInfo = channel->GetLoadInfo();
if (aLoadInfo != loadInfo) {
MOZ_ASSERT(false, "newly created channel must have a loadinfo attached");
return NS_ERROR_UNEXPECTED;
}
// If we're sandboxed, make sure to clear any owner the channel
// might already have.
if (loadInfo->GetLoadingSandboxed()) {
channel->SetOwner(nullptr);
}
}
// Some extensions override the http protocol handler and provide their own
// implementation. The channels returned from that implementation doesn't
// seem to always implement the nsIUploadChannel2 interface, presumably
// because it's a new interface.
// Eventually we should remove this and simply require that http channels
// implement the new interface.
// See bug 529041
if (!gHasWarnedUploadChannel2 && scheme.EqualsLiteral("http")) {
nsCOMPtr<nsIUploadChannel2> uploadChannel2 = do_QueryInterface(channel);
if (!uploadChannel2) {
nsCOMPtr<nsIConsoleService> consoleService =
do_GetService(NS_CONSOLESERVICE_CONTRACTID);
if (consoleService) {
consoleService->LogStringMessage(NS_LITERAL_STRING(
"Http channel implementation doesn't support nsIUploadChannel2. An extension has supplied a non-functional http protocol handler. This will break behavior and in future releases not work at all."
).get());
}
gHasWarnedUploadChannel2 = true;
}
}
channel.forget(result);
return NS_OK;
}
NS_IMETHODIMP
nsIOService::NewChannelFromURIWithProxyFlags2(nsIURI* aURI,
nsIURI* aProxyURI,
uint32_t aProxyFlags,
nsIDOMNode* aLoadingNode,
nsIPrincipal* aLoadingPrincipal,
nsIPrincipal* aTriggeringPrincipal,
uint32_t aSecurityFlags,
uint32_t aContentPolicyType,
nsIChannel** result)
{
// Ideally all callers of NewChannelFromURIWithProxyFlags2 provide the
// necessary arguments to create a loadinfo. Keep in mind that addons
// might still call NewChannelFromURIWithProxyFlags() which forwards
// its calls to NewChannelFromURIWithProxyFlags2 using *null* values
// as the arguments for aLoadingNode, aLoadingPrincipal, and also
// aTriggeringPrincipal.
// We do not want to break those addons, hence we only create a Loadinfo
// if 'aLoadingNode' or 'aLoadingPrincipal' are provided. Note, that
// either aLoadingNode or aLoadingPrincipal is required to succesfully
// create a LoadInfo object.
// Except in the case of top level TYPE_DOCUMENT loads, where the
// loadingNode and loadingPrincipal are allowed to have null values.
nsCOMPtr<nsILoadInfo> loadInfo;
// TYPE_DOCUMENT loads don't require a loadingNode or principal, but other
// types do.
if (aLoadingNode || aLoadingPrincipal ||
aContentPolicyType == nsIContentPolicy::TYPE_DOCUMENT) {
nsCOMPtr<nsINode> loadingNode(do_QueryInterface(aLoadingNode));
loadInfo = new LoadInfo(aLoadingPrincipal,
aTriggeringPrincipal,
loadingNode,
aSecurityFlags,
aContentPolicyType);
}
NS_ASSERTION(loadInfo, "Please pass security info when creating a channel");
return NewChannelFromURIWithProxyFlagsInternal(aURI,
aProxyURI,
aProxyFlags,
loadInfo,
result);
}
/* ***** DEPRECATED *****
* please use NewChannelFromURIWithProxyFlags2 providing the right arguments for:
* * aLoadingNode
* * aLoadingPrincipal
* * aTriggeringPrincipal
* * aSecurityFlags
* * aContentPolicyType
*
* See nsIIoService.idl for a detailed description of those arguments
*/
NS_IMETHODIMP
nsIOService::NewChannelFromURIWithProxyFlags(nsIURI *aURI,
nsIURI *aProxyURI,
uint32_t aProxyFlags,
nsIChannel **result)
{
NS_ASSERTION(false, "Deprecated, use NewChannelFromURIWithProxyFlags2 providing loadInfo arguments!");
const char16_t* params[] = {
u"nsIOService::NewChannelFromURIWithProxyFlags()",
u"nsIOService::NewChannelFromURIWithProxyFlags2()"
};
nsContentUtils::ReportToConsole(nsIScriptError::warningFlag,
NS_LITERAL_CSTRING("Security by Default"),
nullptr, // aDocument
nsContentUtils::eNECKO_PROPERTIES,
"APIDeprecationWarning",
params, ArrayLength(params));
return NewChannelFromURIWithProxyFlags2(aURI,
aProxyURI,
aProxyFlags,
nullptr, // aLoadingNode
nsContentUtils::GetSystemPrincipal(),
nullptr, // aTriggeringPrincipal
nsILoadInfo::SEC_ALLOW_CROSS_ORIGIN_DATA_IS_NULL,
nsIContentPolicy::TYPE_OTHER,
result);
}
NS_IMETHODIMP
nsIOService::NewChannel2(const nsACString& aSpec,
const char* aCharset,
nsIURI* aBaseURI,
nsIDOMNode* aLoadingNode,
nsIPrincipal* aLoadingPrincipal,
nsIPrincipal* aTriggeringPrincipal,
uint32_t aSecurityFlags,
uint32_t aContentPolicyType,
nsIChannel** result)
{
nsresult rv;
nsCOMPtr<nsIURI> uri;
rv = NewURI(aSpec, aCharset, aBaseURI, getter_AddRefs(uri));
if (NS_FAILED(rv)) return rv;
return NewChannelFromURI2(uri,
aLoadingNode,
aLoadingPrincipal,
aTriggeringPrincipal,
aSecurityFlags,
aContentPolicyType,
result);
}
/* ***** DEPRECATED *****
* please use NewChannel2 providing the right arguments for:
* * aLoadingNode
* * aLoadingPrincipal
* * aTriggeringPrincipal
* * aSecurityFlags
* * aContentPolicyType
*
* See nsIIoService.idl for a detailed description of those arguments
*/
NS_IMETHODIMP
nsIOService::NewChannel(const nsACString &aSpec, const char *aCharset, nsIURI *aBaseURI, nsIChannel **result)
{
NS_ASSERTION(false, "Deprecated, use NewChannel2 providing loadInfo arguments!");
const char16_t* params[] = {
u"nsIOService::NewChannel()",
u"nsIOService::NewChannel2()"
};
nsContentUtils::ReportToConsole(nsIScriptError::warningFlag,
NS_LITERAL_CSTRING("Security by Default"),
nullptr, // aDocument
nsContentUtils::eNECKO_PROPERTIES,
"APIDeprecationWarning",
params, ArrayLength(params));
// Call NewChannel2 providing default arguments for the loadInfo.
return NewChannel2(aSpec,
aCharset,
aBaseURI,
nullptr, // aLoadingNode
nsContentUtils::GetSystemPrincipal(), // aLoadingPrincipal
nullptr, // aTriggeringPrincipal
nsILoadInfo::SEC_ALLOW_CROSS_ORIGIN_DATA_IS_NULL,
nsIContentPolicy::TYPE_OTHER,
result);
}
bool
nsIOService::IsLinkUp()
{
InitializeNetworkLinkService();
if (!mNetworkLinkService) {
// We cannot decide, assume the link is up
return true;
}
bool isLinkUp;
nsresult rv;
rv = mNetworkLinkService->GetIsLinkUp(&isLinkUp);
if (NS_FAILED(rv)) {
return true;
}
return isLinkUp;
}
NS_IMETHODIMP
nsIOService::GetOffline(bool *offline)
{
if (mOfflineMirrorsConnectivity) {
*offline = mOffline || !mConnectivity;
} else {
*offline = mOffline;
}
return NS_OK;
}
NS_IMETHODIMP
nsIOService::SetOffline(bool offline)
{
LOG(("nsIOService::SetOffline offline=%d\n", offline));
// When someone wants to go online (!offline) after we got XPCOM shutdown
// throw ERROR_NOT_AVAILABLE to prevent return to online state.
if ((mShutdown || mOfflineForProfileChange) && !offline)
return NS_ERROR_NOT_AVAILABLE;
// SetOffline() may re-enter while it's shutting down services.
// If that happens, save the most recent value and it will be
// processed when the first SetOffline() call is done bringing
// down the service.
mSetOfflineValue = offline;
if (mSettingOffline) {
return NS_OK;
}
mSettingOffline = true;
nsCOMPtr<nsIObserverService> observerService = services::GetObserverService();
NS_ASSERTION(observerService, "The observer service should not be null");
if (XRE_IsParentProcess()) {
if (observerService) {
(void)observerService->NotifyObservers(nullptr,
NS_IPC_IOSERVICE_SET_OFFLINE_TOPIC, offline ?
u"true" :
u"false");
}
}
nsIIOService *subject = static_cast<nsIIOService *>(this);
while (mSetOfflineValue != mOffline) {
offline = mSetOfflineValue;
if (offline && !mOffline) {
NS_NAMED_LITERAL_STRING(offlineString, NS_IOSERVICE_OFFLINE);
mOffline = true; // indicate we're trying to shutdown
// don't care if notifications fail
if (observerService)
observerService->NotifyObservers(subject,
NS_IOSERVICE_GOING_OFFLINE_TOPIC,
offlineString.get());
if (mSocketTransportService)
mSocketTransportService->SetOffline(true);
if (observerService)
observerService->NotifyObservers(subject,
NS_IOSERVICE_OFFLINE_STATUS_TOPIC,
offlineString.get());
}
else if (!offline && mOffline) {
// go online
if (mDNSService) {
DebugOnly<nsresult> rv = mDNSService->Init();
NS_ASSERTION(NS_SUCCEEDED(rv), "DNS service init failed");
}
InitializeSocketTransportService();
mOffline = false; // indicate success only AFTER we've
// brought up the services
// trigger a PAC reload when we come back online
if (mProxyService)
mProxyService->ReloadPAC();
// don't care if notification fails
// Only send the ONLINE notification if there is connectivity
if (observerService && mConnectivity) {
observerService->NotifyObservers(subject,
NS_IOSERVICE_OFFLINE_STATUS_TOPIC,
(u"" NS_IOSERVICE_ONLINE));
}
}
}
// Don't notify here, as the above notifications (if used) suffice.
if ((mShutdown || mOfflineForProfileChange) && mOffline) {
// be sure to try and shutdown both (even if the first fails)...
// shutdown dns service first, because it has callbacks for socket transport
if (mDNSService) {
DebugOnly<nsresult> rv = mDNSService->Shutdown();
NS_ASSERTION(NS_SUCCEEDED(rv), "DNS service shutdown failed");
}
if (mSocketTransportService) {
DebugOnly<nsresult> rv = mSocketTransportService->Shutdown(mShutdown);
NS_ASSERTION(NS_SUCCEEDED(rv), "socket transport service shutdown failed");
}
}
mSettingOffline = false;
return NS_OK;
}
NS_IMETHODIMP
nsIOService::GetConnectivity(bool *aConnectivity)
{
*aConnectivity = mConnectivity;
return NS_OK;
}
NS_IMETHODIMP
nsIOService::SetConnectivity(bool aConnectivity)
{
LOG(("nsIOService::SetConnectivity aConnectivity=%d\n", aConnectivity));
// This should only be called from ContentChild to pass the connectivity
// value from the chrome process to the content process.
if (XRE_IsParentProcess()) {
return NS_ERROR_NOT_AVAILABLE;
}
return SetConnectivityInternal(aConnectivity);
}
nsresult
nsIOService::SetConnectivityInternal(bool aConnectivity)
{
LOG(("nsIOService::SetConnectivityInternal aConnectivity=%d\n", aConnectivity));
if (mConnectivity == aConnectivity) {
// Nothing to do here.
return NS_OK;
}
mConnectivity = aConnectivity;
nsCOMPtr<nsIObserverService> observerService = services::GetObserverService();
if (!observerService) {
return NS_OK;
}
// This notification sends the connectivity to the child processes
if (XRE_IsParentProcess()) {
observerService->NotifyObservers(nullptr,
NS_IPC_IOSERVICE_SET_CONNECTIVITY_TOPIC, aConnectivity ?
u"true" :
u"false");
}
if (mOffline) {
// We don't need to send any notifications if we're offline
return NS_OK;
}
if (aConnectivity) {
// If we were previously offline due to connectivity=false,
// send the ONLINE notification
observerService->NotifyObservers(
static_cast<nsIIOService *>(this),
NS_IOSERVICE_OFFLINE_STATUS_TOPIC,
(u"" NS_IOSERVICE_ONLINE));
} else {
// If we were previously online and lost connectivity
// send the OFFLINE notification
const nsLiteralString offlineString(u"" NS_IOSERVICE_OFFLINE);
observerService->NotifyObservers(static_cast<nsIIOService *>(this),
NS_IOSERVICE_GOING_OFFLINE_TOPIC,
offlineString.get());
observerService->NotifyObservers(static_cast<nsIIOService *>(this),
NS_IOSERVICE_OFFLINE_STATUS_TOPIC,
offlineString.get());
}
return NS_OK;
}
NS_IMETHODIMP
nsIOService::AllowPort(int32_t inPort, const char *scheme, bool *_retval)
{
int16_t port = inPort;
if (port == -1) {
*_retval = true;
return NS_OK;
}
if (port == 0) {
*_retval = false;
return NS_OK;
}
// first check to see if the port is in our blacklist:
int32_t badPortListCnt = mRestrictedPortList.Length();
for (int i=0; i<badPortListCnt; i++)
{
if (port == mRestrictedPortList[i])
{
*_retval = false;
// check to see if the protocol wants to override
if (!scheme)
return NS_OK;
nsCOMPtr<nsIProtocolHandler> handler;
nsresult rv = GetProtocolHandler(scheme, getter_AddRefs(handler));
if (NS_FAILED(rv)) return rv;
// let the protocol handler decide
return handler->AllowPort(port, scheme, _retval);
}
}
*_retval = true;
return NS_OK;
}
////////////////////////////////////////////////////////////////////////////////
void
nsIOService::PrefsChanged(nsIPrefBranch *prefs, const char *pref)
{
if (!prefs) return;
// Look for extra ports to block
if (!pref || strcmp(pref, PORT_PREF("banned")) == 0)
ParsePortList(prefs, PORT_PREF("banned"), false);
// ...as well as previous blocks to remove.
if (!pref || strcmp(pref, PORT_PREF("banned.override")) == 0)
ParsePortList(prefs, PORT_PREF("banned.override"), true);
if (!pref || strcmp(pref, MANAGE_OFFLINE_STATUS_PREF) == 0) {
bool manage;
if (mNetworkLinkServiceInitialized &&
NS_SUCCEEDED(prefs->GetBoolPref(MANAGE_OFFLINE_STATUS_PREF,
&manage))) {
LOG(("nsIOService::PrefsChanged ManageOfflineStatus manage=%d\n", manage));
SetManageOfflineStatus(manage);
}
}
if (!pref || strcmp(pref, NECKO_BUFFER_CACHE_COUNT_PREF) == 0) {
int32_t count;
if (NS_SUCCEEDED(prefs->GetIntPref(NECKO_BUFFER_CACHE_COUNT_PREF,
&count)))
/* check for bogus values and default if we find such a value */
if (count > 0)
gDefaultSegmentCount = count;
}
if (!pref || strcmp(pref, NECKO_BUFFER_CACHE_SIZE_PREF) == 0) {
int32_t size;
if (NS_SUCCEEDED(prefs->GetIntPref(NECKO_BUFFER_CACHE_SIZE_PREF,
&size)))
/* check for bogus values and default if we find such a value
* the upper limit here is arbitrary. having a 1mb segment size
* is pretty crazy. if you remove this, consider adding some
* integer rollover test.
*/
if (size > 0 && size < 1024*1024)
gDefaultSegmentSize = size;
NS_WARNING_ASSERTION(!(size & (size - 1)),
"network segment size is not a power of 2!");
}
if (!pref || strcmp(pref, NETWORK_NOTIFY_CHANGED_PREF) == 0) {
bool allow;
nsresult rv = prefs->GetBoolPref(NETWORK_NOTIFY_CHANGED_PREF, &allow);
if (NS_SUCCEEDED(rv)) {
mNetworkNotifyChanged = allow;
}
}
}
void
nsIOService::ParsePortList(nsIPrefBranch *prefBranch, const char *pref, bool remove)
{
nsXPIDLCString portList;
// Get a pref string and chop it up into a list of ports.
prefBranch->GetCharPref(pref, getter_Copies(portList));
if (portList) {
nsTArray<nsCString> portListArray;
ParseString(portList, ',', portListArray);
uint32_t index;
for (index=0; index < portListArray.Length(); index++) {
portListArray[index].StripWhitespace();
int32_t portBegin, portEnd;
if (PR_sscanf(portListArray[index].get(), "%d-%d", &portBegin, &portEnd) == 2) {
if ((portBegin < 65536) && (portEnd < 65536)) {
int32_t curPort;
if (remove) {
for (curPort=portBegin; curPort <= portEnd; curPort++)
mRestrictedPortList.RemoveElement(curPort);
} else {
for (curPort=portBegin; curPort <= portEnd; curPort++)
mRestrictedPortList.AppendElement(curPort);
}
}
} else {
nsresult aErrorCode;
int32_t port = portListArray[index].ToInteger(&aErrorCode);
if (NS_SUCCEEDED(aErrorCode) && port < 65536) {
if (remove)
mRestrictedPortList.RemoveElement(port);
else
mRestrictedPortList.AppendElement(port);
}
}
}
}
}
void
nsIOService::GetPrefBranch(nsIPrefBranch **result)
{
*result = nullptr;
CallGetService(NS_PREFSERVICE_CONTRACTID, result);
}
class nsWakeupNotifier : public Runnable
{
public:
explicit nsWakeupNotifier(nsIIOServiceInternal *ioService)
:mIOService(ioService)
{ }
NS_IMETHOD Run() override
{
return mIOService->NotifyWakeup();
}
private:
virtual ~nsWakeupNotifier() { }
nsCOMPtr<nsIIOServiceInternal> mIOService;
};
NS_IMETHODIMP
nsIOService::NotifyWakeup()
{
nsCOMPtr<nsIObserverService> observerService = services::GetObserverService();
NS_ASSERTION(observerService, "The observer service should not be null");
if (observerService && mNetworkNotifyChanged) {
(void)observerService->
NotifyObservers(nullptr,
NS_NETWORK_LINK_TOPIC,
(u"" NS_NETWORK_LINK_DATA_CHANGED));
}
return NS_OK;
}
void
nsIOService::SetHttpHandlerAlreadyShutingDown()
{
if (!mShutdown && !mOfflineForProfileChange) {
mNetTearingDownStarted = PR_IntervalNow();
mHttpHandlerAlreadyShutingDown = true;
}
}
// nsIObserver interface
NS_IMETHODIMP
nsIOService::Observe(nsISupports *subject,
const char *topic,
const char16_t *data)
{
if (!strcmp(topic, NS_PREFBRANCH_PREFCHANGE_TOPIC_ID)) {
nsCOMPtr<nsIPrefBranch> prefBranch = do_QueryInterface(subject);
if (prefBranch)
PrefsChanged(prefBranch, NS_ConvertUTF16toUTF8(data).get());
} else if (!strcmp(topic, kProfileChangeNetTeardownTopic)) {
if (!mHttpHandlerAlreadyShutingDown) {
mNetTearingDownStarted = PR_IntervalNow();
}
mHttpHandlerAlreadyShutingDown = false;
if (!mOffline) {
mOfflineForProfileChange = true;
SetOffline(true);
}
} else if (!strcmp(topic, kProfileChangeNetRestoreTopic)) {
if (mOfflineForProfileChange) {
mOfflineForProfileChange = false;
SetOffline(false);
}
} else if (!strcmp(topic, kProfileDoChange)) {
if (data && NS_LITERAL_STRING("startup").Equals(data)) {
// Lazy initialization of network link service (see bug 620472)
InitializeNetworkLinkService();
// Set up the initilization flag regardless the actuall result.
// If we fail here, we will fail always on.
mNetworkLinkServiceInitialized = true;
// And now reflect the preference setting
nsCOMPtr<nsIPrefBranch> prefBranch;
GetPrefBranch(getter_AddRefs(prefBranch));
PrefsChanged(prefBranch, MANAGE_OFFLINE_STATUS_PREF);
}
} else if (!strcmp(topic, NS_XPCOM_SHUTDOWN_OBSERVER_ID)) {
// Remember we passed XPCOM shutdown notification to prevent any
// changes of the offline status from now. We must not allow going
// online after this point.
mShutdown = true;
if (!mHttpHandlerAlreadyShutingDown && !mOfflineForProfileChange) {
mNetTearingDownStarted = PR_IntervalNow();
}
mHttpHandlerAlreadyShutingDown = false;
SetOffline(true);
// Break circular reference.
mProxyService = nullptr;
} else if (!strcmp(topic, NS_NETWORK_LINK_TOPIC)) {
OnNetworkLinkEvent(NS_ConvertUTF16toUTF8(data).get());
} else if (!strcmp(topic, NS_WIDGET_WAKE_OBSERVER_TOPIC)) {
// coming back alive from sleep
// this indirection brought to you by:
// https://bugzilla.mozilla.org/show_bug.cgi?id=1152048#c19
nsCOMPtr<nsIRunnable> wakeupNotifier = new nsWakeupNotifier(this);
NS_DispatchToMainThread(wakeupNotifier);
}
return NS_OK;
}
// nsINetUtil interface
NS_IMETHODIMP
nsIOService::ParseRequestContentType(const nsACString &aTypeHeader,
nsACString &aCharset,
bool *aHadCharset,
nsACString &aContentType)
{
net_ParseRequestContentType(aTypeHeader, aContentType, aCharset, aHadCharset);
return NS_OK;
}
// nsINetUtil interface
NS_IMETHODIMP
nsIOService::ParseResponseContentType(const nsACString &aTypeHeader,
nsACString &aCharset,
bool *aHadCharset,
nsACString &aContentType)
{
net_ParseContentType(aTypeHeader, aContentType, aCharset, aHadCharset);
return NS_OK;
}
NS_IMETHODIMP
nsIOService::ProtocolHasFlags(nsIURI *uri,
uint32_t flags,
bool *result)
{
NS_ENSURE_ARG(uri);
*result = false;
nsAutoCString scheme;
nsresult rv = uri->GetScheme(scheme);
NS_ENSURE_SUCCESS(rv, rv);
// Grab the protocol flags from the URI.
uint32_t protocolFlags;
nsCOMPtr<nsIProtocolHandler> handler;
rv = GetProtocolHandler(scheme.get(), getter_AddRefs(handler));
NS_ENSURE_SUCCESS(rv, rv);
rv = handler->DoGetProtocolFlags(uri, &protocolFlags);
NS_ENSURE_SUCCESS(rv, rv);
*result = (protocolFlags & flags) == flags;
return NS_OK;
}
NS_IMETHODIMP
nsIOService::URIChainHasFlags(nsIURI *uri,
uint32_t flags,
bool *result)
{
nsresult rv = ProtocolHasFlags(uri, flags, result);
NS_ENSURE_SUCCESS(rv, rv);
if (*result) {
return rv;
}
// Dig deeper into the chain. Note that this is not a do/while loop to
// avoid the extra addref/release on |uri| in the common (non-nested) case.
nsCOMPtr<nsINestedURI> nestedURI = do_QueryInterface(uri);
while (nestedURI) {
nsCOMPtr<nsIURI> innerURI;
rv = nestedURI->GetInnerURI(getter_AddRefs(innerURI));
NS_ENSURE_SUCCESS(rv, rv);
rv = ProtocolHasFlags(innerURI, flags, result);
if (*result) {
return rv;
}
nestedURI = do_QueryInterface(innerURI);
}
return rv;
}
NS_IMETHODIMP
nsIOService::ToImmutableURI(nsIURI* uri, nsIURI** result)
{
if (!uri) {
*result = nullptr;
return NS_OK;
}
nsresult rv = NS_EnsureSafeToReturn(uri, result);
NS_ENSURE_SUCCESS(rv, rv);
NS_TryToSetImmutable(*result);
return NS_OK;
}
NS_IMETHODIMP
nsIOService::NewSimpleNestedURI(nsIURI* aURI, nsIURI** aResult)
{
NS_ENSURE_ARG(aURI);
nsCOMPtr<nsIURI> safeURI;
nsresult rv = NS_EnsureSafeToReturn(aURI, getter_AddRefs(safeURI));
NS_ENSURE_SUCCESS(rv, rv);
NS_IF_ADDREF(*aResult = new nsSimpleNestedURI(safeURI));
return *aResult ? NS_OK : NS_ERROR_OUT_OF_MEMORY;
}
NS_IMETHODIMP
nsIOService::SetManageOfflineStatus(bool aManage)
{
LOG(("nsIOService::SetManageOfflineStatus aManage=%d\n", aManage));
mManageLinkStatus = aManage;
// When detection is not activated, the default connectivity state is true.
if (!mManageLinkStatus) {
SetConnectivityInternal(true);
return NS_OK;
}
InitializeNetworkLinkService();
// If the NetworkLinkService is already initialized, it does not call
// OnNetworkLinkEvent. This is needed, when mManageLinkStatus goes from
// false to true.
OnNetworkLinkEvent(NS_NETWORK_LINK_DATA_UNKNOWN);
return NS_OK;
}
NS_IMETHODIMP
nsIOService::GetManageOfflineStatus(bool* aManage)
{
*aManage = mManageLinkStatus;
return NS_OK;
}
// input argument 'data' is already UTF8'ed
nsresult
nsIOService::OnNetworkLinkEvent(const char *data)
{
LOG(("nsIOService::OnNetworkLinkEvent data:%s\n", data));
if (!mNetworkLinkService)
return NS_ERROR_FAILURE;
if (mShutdown)
return NS_ERROR_NOT_AVAILABLE;
if (!mManageLinkStatus) {
LOG(("nsIOService::OnNetworkLinkEvent mManageLinkStatus=false\n"));
return NS_OK;
}
bool isUp = true;
if (!strcmp(data, NS_NETWORK_LINK_DATA_CHANGED)) {
// CHANGED means UP/DOWN didn't change
return NS_OK;
} else if (!strcmp(data, NS_NETWORK_LINK_DATA_DOWN)) {
isUp = false;
} else if (!strcmp(data, NS_NETWORK_LINK_DATA_UP)) {
isUp = true;
} else if (!strcmp(data, NS_NETWORK_LINK_DATA_UNKNOWN)) {
nsresult rv = mNetworkLinkService->GetIsLinkUp(&isUp);
NS_ENSURE_SUCCESS(rv, rv);
} else {
NS_WARNING("Unhandled network event!");
return NS_OK;
}
return SetConnectivityInternal(isUp);
}
NS_IMETHODIMP
nsIOService::EscapeString(const nsACString& aString,
uint32_t aEscapeType,
nsACString& aResult)
{
NS_ENSURE_ARG_MAX(aEscapeType, 4);
nsAutoCString stringCopy(aString);
nsCString result;
if (!NS_Escape(stringCopy, result, (nsEscapeMask) aEscapeType))
return NS_ERROR_OUT_OF_MEMORY;
aResult.Assign(result);
return NS_OK;
}
NS_IMETHODIMP
nsIOService::EscapeURL(const nsACString &aStr,
uint32_t aFlags, nsACString &aResult)
{
aResult.Truncate();
NS_EscapeURL(aStr.BeginReading(), aStr.Length(),
aFlags | esc_AlwaysCopy, aResult);
return NS_OK;
}
NS_IMETHODIMP
nsIOService::UnescapeString(const nsACString &aStr,
uint32_t aFlags, nsACString &aResult)
{
aResult.Truncate();
NS_UnescapeURL(aStr.BeginReading(), aStr.Length(),
aFlags | esc_AlwaysCopy, aResult);
return NS_OK;
}
NS_IMETHODIMP
nsIOService::ExtractCharsetFromContentType(const nsACString &aTypeHeader,
nsACString &aCharset,
int32_t *aCharsetStart,
int32_t *aCharsetEnd,
bool *aHadCharset)
{
nsAutoCString ignored;
net_ParseContentType(aTypeHeader, ignored, aCharset, aHadCharset,
aCharsetStart, aCharsetEnd);
if (*aHadCharset && *aCharsetStart == *aCharsetEnd) {
*aHadCharset = false;
}
return NS_OK;
}
// parse policyString to policy enum value (see ReferrerPolicy.h)
NS_IMETHODIMP
nsIOService::ParseAttributePolicyString(const nsAString& policyString,
uint32_t *outPolicyEnum)
{
NS_ENSURE_ARG(outPolicyEnum);
*outPolicyEnum = (uint32_t)AttributeReferrerPolicyFromString(policyString);
return NS_OK;
}
// nsISpeculativeConnect
class IOServiceProxyCallback final : public nsIProtocolProxyCallback
{
~IOServiceProxyCallback() {}
public:
NS_DECL_ISUPPORTS
NS_DECL_NSIPROTOCOLPROXYCALLBACK
IOServiceProxyCallback(nsIInterfaceRequestor *aCallbacks,
nsIOService *aIOService)
: mCallbacks(aCallbacks)
, mIOService(aIOService)
{ }
private:
RefPtr<nsIInterfaceRequestor> mCallbacks;
RefPtr<nsIOService> mIOService;
};
NS_IMPL_ISUPPORTS(IOServiceProxyCallback, nsIProtocolProxyCallback)
NS_IMETHODIMP
IOServiceProxyCallback::OnProxyAvailable(nsICancelable *request, nsIChannel *channel,
nsIProxyInfo *pi, nsresult status)
{
// Checking proxy status for speculative connect
nsAutoCString type;
if (NS_SUCCEEDED(status) && pi &&
NS_SUCCEEDED(pi->GetType(type)) &&
!type.EqualsLiteral("direct")) {
// proxies dont do speculative connect
return NS_OK;
}
nsCOMPtr<nsIURI> uri;
nsresult rv = channel->GetURI(getter_AddRefs(uri));
if (NS_FAILED(rv)) {
return NS_OK;
}
nsAutoCString scheme;
rv = uri->GetScheme(scheme);
if (NS_FAILED(rv))
return NS_OK;
nsCOMPtr<nsIProtocolHandler> handler;
rv = mIOService->GetProtocolHandler(scheme.get(),
getter_AddRefs(handler));
if (NS_FAILED(rv))
return NS_OK;
nsCOMPtr<nsISpeculativeConnect> speculativeHandler =
do_QueryInterface(handler);
if (!speculativeHandler)
return NS_OK;
nsCOMPtr<nsILoadInfo> loadInfo = channel->GetLoadInfo();
nsCOMPtr<nsIPrincipal> principal;
if (loadInfo) {
principal = loadInfo->LoadingPrincipal();
}
nsLoadFlags loadFlags = 0;
channel->GetLoadFlags(&loadFlags);
if (loadFlags & nsIRequest::LOAD_ANONYMOUS) {
speculativeHandler->SpeculativeAnonymousConnect2(uri, principal, mCallbacks);
} else {
speculativeHandler->SpeculativeConnect2(uri, principal, mCallbacks);
}
return NS_OK;
}
nsresult
nsIOService::SpeculativeConnectInternal(nsIURI *aURI,
nsIPrincipal *aPrincipal,
nsIInterfaceRequestor *aCallbacks,
bool aAnonymous)
{
if (IsNeckoChild()) {
ipc::URIParams params;
SerializeURI(aURI, params);
gNeckoChild->SendSpeculativeConnect(params,
IPC::Principal(aPrincipal),
aAnonymous);
return NS_OK;
}
// Check for proxy information. If there is a proxy configured then a
// speculative connect should not be performed because the potential
// reward is slim with tcp peers closely located to the browser.
nsresult rv;
nsCOMPtr<nsIProtocolProxyService> pps =
do_GetService(NS_PROTOCOLPROXYSERVICE_CONTRACTID, &rv);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIPrincipal> loadingPrincipal = aPrincipal;
// If the principal is given, we use this prinicpal directly. Otherwise,
// we fallback to use the system principal.
if (!aPrincipal) {
nsCOMPtr<nsIScriptSecurityManager> secMan(
do_GetService(NS_SCRIPTSECURITYMANAGER_CONTRACTID, &rv));
NS_ENSURE_SUCCESS(rv, rv);
rv = secMan->GetSystemPrincipal(getter_AddRefs(loadingPrincipal));
NS_ENSURE_SUCCESS(rv, rv);
}
// dummy channel used to create a TCP connection.
// we perform security checks on the *real* channel, responsible
// for any network loads. this real channel just checks the TCP
// pool if there is an available connection created by the
// channel we create underneath - hence it's safe to use
// the systemPrincipal as the loadingPrincipal for this channel.
nsCOMPtr<nsIChannel> channel;
rv = NewChannelFromURI2(aURI,
nullptr, // aLoadingNode,
loadingPrincipal,
nullptr, //aTriggeringPrincipal,
nsILoadInfo::SEC_ALLOW_CROSS_ORIGIN_DATA_IS_NULL,
nsIContentPolicy::TYPE_OTHER,
getter_AddRefs(channel));
NS_ENSURE_SUCCESS(rv, rv);
if (aAnonymous) {
nsLoadFlags loadFlags = 0;
channel->GetLoadFlags(&loadFlags);
loadFlags |= nsIRequest::LOAD_ANONYMOUS;
channel->SetLoadFlags(loadFlags);
}
nsCOMPtr<nsICancelable> cancelable;
RefPtr<IOServiceProxyCallback> callback =
new IOServiceProxyCallback(aCallbacks, this);
nsCOMPtr<nsIProtocolProxyService2> pps2 = do_QueryInterface(pps);
if (pps2) {
return pps2->AsyncResolve2(channel, 0, callback, getter_AddRefs(cancelable));
}
return pps->AsyncResolve(channel, 0, callback, getter_AddRefs(cancelable));
}
NS_IMETHODIMP
nsIOService::SpeculativeConnect(nsIURI *aURI,
nsIInterfaceRequestor *aCallbacks)
{
return SpeculativeConnectInternal(aURI, nullptr, aCallbacks, false);
}
NS_IMETHODIMP
nsIOService::SpeculativeConnect2(nsIURI *aURI,
nsIPrincipal *aPrincipal,
nsIInterfaceRequestor *aCallbacks)
{
return SpeculativeConnectInternal(aURI, aPrincipal, aCallbacks, false);
}
NS_IMETHODIMP
nsIOService::SpeculativeAnonymousConnect(nsIURI *aURI,
nsIInterfaceRequestor *aCallbacks)
{
return SpeculativeConnectInternal(aURI, nullptr, aCallbacks, true);
}
NS_IMETHODIMP
nsIOService::SpeculativeAnonymousConnect2(nsIURI *aURI,
nsIPrincipal *aPrincipal,
nsIInterfaceRequestor *aCallbacks)
{
return SpeculativeConnectInternal(aURI, aPrincipal, aCallbacks, true);
}
/*static*/ bool
nsIOService::BlockToplevelDataUriNavigations()
{
return sBlockToplevelDataUriNavigations;
}
/*static*/ bool
nsIOService::BlockFTPSubresources()
{
return sBlockFTPSubresources;
}
} // namespace net
} // namespace mozilla
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