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gecko-dev/netwerk/base/public/nsNetUtil.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* vim:set ts=4 sw=4 sts=4 et 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/. */
#ifndef nsNetUtil_h__
#define nsNetUtil_h__
#include "nsError.h"
#include "nsNetCID.h"
#include "nsStringGlue.h"
#include "nsMemory.h"
#include "nsCOMPtr.h"
#include "prio.h" // for read/write flags, permissions, etc.
#include "nsHashKeys.h"
#include "plstr.h"
#include "nsIURI.h"
#include "nsIStandardURL.h"
#include "nsIURLParser.h"
#include "nsIUUIDGenerator.h"
#include "nsIInputStream.h"
#include "nsIOutputStream.h"
#include "nsISafeOutputStream.h"
#include "nsIStreamListener.h"
#include "nsIRequestObserverProxy.h"
#include "nsISimpleStreamListener.h"
#include "nsILoadGroup.h"
#include "nsIInterfaceRequestor.h"
#include "nsIInterfaceRequestorUtils.h"
#include "nsIIOService.h"
#include "nsIServiceManager.h"
#include "nsIChannel.h"
#include "nsChannelProperties.h"
#include "nsIInputStreamChannel.h"
#include "nsITransport.h"
#include "nsIStreamTransportService.h"
#include "nsIHttpChannel.h"
#include "nsIDownloader.h"
#include "nsIStreamLoader.h"
#include "nsIUnicharStreamLoader.h"
#include "nsIPipe.h"
#include "nsIProtocolHandler.h"
#include "nsIFileProtocolHandler.h"
#include "nsIStringStream.h"
#include "nsIFile.h"
#include "nsIFileStreams.h"
#include "nsIFileURL.h"
#include "nsIProtocolProxyService.h"
#include "nsIProxyInfo.h"
#include "nsIFileStreams.h"
#include "nsIBufferedStreams.h"
#include "nsIInputStreamPump.h"
#include "nsIAsyncStreamCopier.h"
#include "nsIPersistentProperties2.h"
#include "nsISyncStreamListener.h"
#include "nsInterfaceRequestorAgg.h"
#include "nsINetUtil.h"
#include "nsIURIWithPrincipal.h"
#include "nsIAuthPrompt.h"
#include "nsIAuthPrompt2.h"
#include "nsIAuthPromptAdapterFactory.h"
#include "nsComponentManagerUtils.h"
#include "nsServiceManagerUtils.h"
#include "nsINestedURI.h"
#include "nsIMutable.h"
#include "nsIPropertyBag2.h"
#include "nsIWritablePropertyBag2.h"
#include "nsIIDNService.h"
#include "nsIChannelEventSink.h"
#include "nsIChannelPolicy.h"
#include "nsISocketProviderService.h"
#include "nsISocketProvider.h"
#include "nsIRedirectChannelRegistrar.h"
#include "nsIMIMEHeaderParam.h"
#include "nsILoadContext.h"
#include "mozilla/Services.h"
#include "nsIPrivateBrowsingChannel.h"
#include "mozIApplicationClearPrivateDataParams.h"
#include <limits>
#ifdef MOZILLA_INTERNAL_API
inline already_AddRefed<nsIIOService>
do_GetIOService(nsresult* error = 0)
{
already_AddRefed<nsIIOService> ret = mozilla::services::GetIOService();
if (error)
*error = ret.get() ? NS_OK : NS_ERROR_FAILURE;
return ret;
}
inline already_AddRefed<nsINetUtil>
do_GetNetUtil(nsresult *error = 0)
{
nsCOMPtr<nsIIOService> io = mozilla::services::GetIOService();
already_AddRefed<nsINetUtil> ret = nullptr;
if (io)
CallQueryInterface(io, &ret.mRawPtr);
if (error)
*error = ret.get() ? NS_OK : NS_ERROR_FAILURE;
return ret;
}
#else
// Helper, to simplify getting the I/O service.
inline const nsGetServiceByContractIDWithError
do_GetIOService(nsresult* error = 0)
{
return nsGetServiceByContractIDWithError(NS_IOSERVICE_CONTRACTID, error);
}
// An alias to do_GetIOService
inline const nsGetServiceByContractIDWithError
do_GetNetUtil(nsresult* error = 0)
{
return do_GetIOService(error);
}
#endif
// private little helper function... don't call this directly!
inline nsresult
net_EnsureIOService(nsIIOService **ios, nsCOMPtr<nsIIOService> &grip)
{
nsresult rv = NS_OK;
if (!*ios) {
grip = do_GetIOService(&rv);
*ios = grip;
}
return rv;
}
inline nsresult
NS_NewURI(nsIURI **result,
const nsACString &spec,
const char *charset = nullptr,
nsIURI *baseURI = nullptr,
nsIIOService *ioService = nullptr) // pass in nsIIOService to optimize callers
{
nsresult rv;
nsCOMPtr<nsIIOService> grip;
rv = net_EnsureIOService(&ioService, grip);
if (ioService)
rv = ioService->NewURI(spec, charset, baseURI, result);
return rv;
}
inline nsresult
NS_NewURI(nsIURI* *result,
const nsAString& spec,
const char *charset = nullptr,
nsIURI* baseURI = nullptr,
nsIIOService* ioService = nullptr) // pass in nsIIOService to optimize callers
{
return NS_NewURI(result, NS_ConvertUTF16toUTF8(spec), charset, baseURI, ioService);
}
inline nsresult
NS_NewURI(nsIURI* *result,
const char *spec,
nsIURI* baseURI = nullptr,
nsIIOService* ioService = nullptr) // pass in nsIIOService to optimize callers
{
return NS_NewURI(result, nsDependentCString(spec), nullptr, baseURI, ioService);
}
inline nsresult
NS_NewFileURI(nsIURI* *result,
nsIFile* spec,
nsIIOService* ioService = nullptr) // pass in nsIIOService to optimize callers
{
nsresult rv;
nsCOMPtr<nsIIOService> grip;
rv = net_EnsureIOService(&ioService, grip);
if (ioService)
rv = ioService->NewFileURI(spec, result);
return rv;
}
inline nsresult
NS_NewChannel(nsIChannel **result,
nsIURI *uri,
nsIIOService *ioService = nullptr, // pass in nsIIOService to optimize callers
nsILoadGroup *loadGroup = nullptr,
nsIInterfaceRequestor *callbacks = nullptr,
uint32_t loadFlags = nsIRequest::LOAD_NORMAL,
nsIChannelPolicy *channelPolicy = nullptr)
{
nsresult rv;
nsCOMPtr<nsIIOService> grip;
rv = net_EnsureIOService(&ioService, grip);
if (ioService) {
nsCOMPtr<nsIChannel> chan;
rv = ioService->NewChannelFromURI(uri, getter_AddRefs(chan));
if (NS_SUCCEEDED(rv)) {
if (loadGroup) {
rv = chan->SetLoadGroup(loadGroup);
}
if (callbacks) {
nsresult tmp = chan->SetNotificationCallbacks(callbacks);
if (NS_FAILED(tmp)) {
rv = tmp;
}
}
if (loadFlags != nsIRequest::LOAD_NORMAL) {
// Retain the LOAD_REPLACE load flag if set.
nsLoadFlags normalLoadFlags = 0;
chan->GetLoadFlags(&normalLoadFlags);
nsresult tmp = chan->SetLoadFlags(loadFlags |
(normalLoadFlags &
nsIChannel::LOAD_REPLACE));
if (NS_FAILED(tmp)) {
rv = tmp;
}
}
if (channelPolicy) {
nsCOMPtr<nsIWritablePropertyBag2> props = do_QueryInterface(chan);
if (props) {
props->SetPropertyAsInterface(NS_CHANNEL_PROP_CHANNEL_POLICY,
channelPolicy);
}
}
if (NS_SUCCEEDED(rv))
chan.forget(result);
}
}
return rv;
}
// Use this function with CAUTION. It creates a stream that blocks when you
// Read() from it and blocking the UI thread is a bad idea. If you don't want
// to implement a full blown asynchronous consumer (via nsIStreamListener) look
// at nsIStreamLoader instead.
inline nsresult
NS_OpenURI(nsIInputStream **result,
nsIURI *uri,
nsIIOService *ioService = nullptr, // pass in nsIIOService to optimize callers
nsILoadGroup *loadGroup = nullptr,
nsIInterfaceRequestor *callbacks = nullptr,
uint32_t loadFlags = nsIRequest::LOAD_NORMAL,
nsIChannel **channelOut = nullptr)
{
nsresult rv;
nsCOMPtr<nsIChannel> channel;
rv = NS_NewChannel(getter_AddRefs(channel), uri, ioService,
loadGroup, callbacks, loadFlags);
if (NS_SUCCEEDED(rv)) {
nsIInputStream *stream;
rv = channel->Open(&stream);
if (NS_SUCCEEDED(rv)) {
*result = stream;
if (channelOut) {
*channelOut = nullptr;
channel.swap(*channelOut);
}
}
}
return rv;
}
inline nsresult
NS_OpenURI(nsIStreamListener *listener,
nsISupports *context,
nsIURI *uri,
nsIIOService *ioService = nullptr, // pass in nsIIOService to optimize callers
nsILoadGroup *loadGroup = nullptr,
nsIInterfaceRequestor *callbacks = nullptr,
uint32_t loadFlags = nsIRequest::LOAD_NORMAL)
{
nsresult rv;
nsCOMPtr<nsIChannel> channel;
rv = NS_NewChannel(getter_AddRefs(channel), uri, ioService,
loadGroup, callbacks, loadFlags);
if (NS_SUCCEEDED(rv))
rv = channel->AsyncOpen(listener, context);
return rv;
}
inline nsresult
NS_MakeAbsoluteURI(nsACString &result,
const nsACString &spec,
nsIURI *baseURI,
nsIIOService *unused = nullptr)
{
nsresult rv;
if (!baseURI) {
NS_WARNING("It doesn't make sense to not supply a base URI");
result = spec;
rv = NS_OK;
}
else if (spec.IsEmpty())
rv = baseURI->GetSpec(result);
else
rv = baseURI->Resolve(spec, result);
return rv;
}
inline nsresult
NS_MakeAbsoluteURI(char **result,
const char *spec,
nsIURI *baseURI,
nsIIOService *unused = nullptr)
{
nsresult rv;
nsAutoCString resultBuf;
rv = NS_MakeAbsoluteURI(resultBuf, nsDependentCString(spec), baseURI);
if (NS_SUCCEEDED(rv)) {
*result = ToNewCString(resultBuf);
if (!*result)
rv = NS_ERROR_OUT_OF_MEMORY;
}
return rv;
}
inline nsresult
NS_MakeAbsoluteURI(nsAString &result,
const nsAString &spec,
nsIURI *baseURI,
nsIIOService *unused = nullptr)
{
nsresult rv;
if (!baseURI) {
NS_WARNING("It doesn't make sense to not supply a base URI");
result = spec;
rv = NS_OK;
}
else {
nsAutoCString resultBuf;
if (spec.IsEmpty())
rv = baseURI->GetSpec(resultBuf);
else
rv = baseURI->Resolve(NS_ConvertUTF16toUTF8(spec), resultBuf);
if (NS_SUCCEEDED(rv))
CopyUTF8toUTF16(resultBuf, result);
}
return rv;
}
/**
* This function is a helper function to get a scheme's default port.
*/
inline int32_t
NS_GetDefaultPort(const char *scheme,
nsIIOService* ioService = nullptr)
{
nsresult rv;
nsCOMPtr<nsIIOService> grip;
net_EnsureIOService(&ioService, grip);
if (!ioService)
return -1;
nsCOMPtr<nsIProtocolHandler> handler;
rv = ioService->GetProtocolHandler(scheme, getter_AddRefs(handler));
if (NS_FAILED(rv))
return -1;
int32_t port;
rv = handler->GetDefaultPort(&port);
return NS_SUCCEEDED(rv) ? port : -1;
}
/**
* This function is a helper function to apply the ToAscii conversion
* to a string
*/
inline bool
NS_StringToACE(const nsACString &idn, nsACString &result)
{
nsCOMPtr<nsIIDNService> idnSrv = do_GetService(NS_IDNSERVICE_CONTRACTID);
if (!idnSrv)
return false;
nsresult rv = idnSrv->ConvertUTF8toACE(idn, result);
if (NS_FAILED(rv))
return false;
return true;
}
/**
* This function is a helper function to get a protocol's default port if the
* URI does not specify a port explicitly. Returns -1 if this protocol has no
* concept of ports or if there was an error getting the port.
*/
inline int32_t
NS_GetRealPort(nsIURI* aURI,
nsIIOService* ioService = nullptr) // pass in nsIIOService to optimize callers
{
int32_t port;
nsresult rv = aURI->GetPort(&port);
if (NS_FAILED(rv))
return -1;
if (port != -1)
return port; // explicitly specified
// Otherwise, we have to get the default port from the protocol handler
// Need the scheme first
nsAutoCString scheme;
rv = aURI->GetScheme(scheme);
if (NS_FAILED(rv))
return -1;
return NS_GetDefaultPort(scheme.get());
}
inline nsresult
NS_NewInputStreamChannel(nsIChannel **result,
nsIURI *uri,
nsIInputStream *stream,
const nsACString &contentType,
const nsACString *contentCharset)
{
nsresult rv;
nsCOMPtr<nsIInputStreamChannel> isc =
do_CreateInstance(NS_INPUTSTREAMCHANNEL_CONTRACTID, &rv);
if (NS_FAILED(rv))
return rv;
rv = isc->SetURI(uri);
nsresult tmp = isc->SetContentStream(stream);
if (NS_FAILED(tmp)) {
rv = tmp;
}
if (NS_FAILED(rv))
return rv;
nsCOMPtr<nsIChannel> chan = do_QueryInterface(isc, &rv);
if (NS_FAILED(rv))
return rv;
if (!contentType.IsEmpty())
rv = chan->SetContentType(contentType);
if (contentCharset && !contentCharset->IsEmpty()) {
tmp = chan->SetContentCharset(*contentCharset);
if (NS_FAILED(tmp)) {
rv = tmp;
}
}
if (NS_SUCCEEDED(rv)) {
*result = nullptr;
chan.swap(*result);
}
return rv;
}
inline nsresult
NS_NewInputStreamChannel(nsIChannel **result,
nsIURI *uri,
nsIInputStream *stream,
const nsACString &contentType = EmptyCString())
{
return NS_NewInputStreamChannel(result, uri, stream, contentType, nullptr);
}
inline nsresult
NS_NewInputStreamChannel(nsIChannel **result,
nsIURI *uri,
nsIInputStream *stream,
const nsACString &contentType,
const nsACString &contentCharset)
{
return NS_NewInputStreamChannel(result, uri, stream, contentType,
&contentCharset);
}
inline nsresult
NS_NewInputStreamPump(nsIInputStreamPump **result,
nsIInputStream *stream,
int64_t streamPos = int64_t(-1),
int64_t streamLen = int64_t(-1),
uint32_t segsize = 0,
uint32_t segcount = 0,
bool closeWhenDone = false)
{
nsresult rv;
nsCOMPtr<nsIInputStreamPump> pump =
do_CreateInstance(NS_INPUTSTREAMPUMP_CONTRACTID, &rv);
if (NS_SUCCEEDED(rv)) {
rv = pump->Init(stream, streamPos, streamLen,
segsize, segcount, closeWhenDone);
if (NS_SUCCEEDED(rv)) {
*result = nullptr;
pump.swap(*result);
}
}
return rv;
}
// NOTE: you will need to specify whether or not your streams are buffered
// (i.e., do they implement ReadSegments/WriteSegments). the default
// assumption of TRUE for both streams might not be right for you!
inline nsresult
NS_NewAsyncStreamCopier(nsIAsyncStreamCopier **result,
nsIInputStream *source,
nsIOutputStream *sink,
nsIEventTarget *target,
bool sourceBuffered = true,
bool sinkBuffered = true,
uint32_t chunkSize = 0,
bool closeSource = true,
bool closeSink = true)
{
nsresult rv;
nsCOMPtr<nsIAsyncStreamCopier> copier =
do_CreateInstance(NS_ASYNCSTREAMCOPIER_CONTRACTID, &rv);
if (NS_SUCCEEDED(rv)) {
rv = copier->Init(source, sink, target, sourceBuffered, sinkBuffered,
chunkSize, closeSource, closeSink);
if (NS_SUCCEEDED(rv)) {
*result = nullptr;
copier.swap(*result);
}
}
return rv;
}
inline nsresult
NS_NewLoadGroup(nsILoadGroup **result,
nsIRequestObserver *obs)
{
nsresult rv;
nsCOMPtr<nsILoadGroup> group =
do_CreateInstance(NS_LOADGROUP_CONTRACTID, &rv);
if (NS_SUCCEEDED(rv)) {
rv = group->SetGroupObserver(obs);
if (NS_SUCCEEDED(rv)) {
*result = nullptr;
group.swap(*result);
}
}
return rv;
}
inline nsresult
NS_NewDownloader(nsIStreamListener **result,
nsIDownloadObserver *observer,
nsIFile *downloadLocation = nullptr)
{
nsresult rv;
nsCOMPtr<nsIDownloader> downloader =
do_CreateInstance(NS_DOWNLOADER_CONTRACTID, &rv);
if (NS_SUCCEEDED(rv)) {
rv = downloader->Init(observer, downloadLocation);
if (NS_SUCCEEDED(rv))
NS_ADDREF(*result = downloader);
}
return rv;
}
inline nsresult
NS_NewStreamLoader(nsIStreamLoader **result,
nsIStreamLoaderObserver *observer)
{
nsresult rv;
nsCOMPtr<nsIStreamLoader> loader =
do_CreateInstance(NS_STREAMLOADER_CONTRACTID, &rv);
if (NS_SUCCEEDED(rv)) {
rv = loader->Init(observer);
if (NS_SUCCEEDED(rv)) {
*result = nullptr;
loader.swap(*result);
}
}
return rv;
}
inline nsresult
NS_NewStreamLoader(nsIStreamLoader **result,
nsIURI *uri,
nsIStreamLoaderObserver *observer,
nsISupports *context = nullptr,
nsILoadGroup *loadGroup = nullptr,
nsIInterfaceRequestor *callbacks = nullptr,
uint32_t loadFlags = nsIRequest::LOAD_NORMAL,
nsIURI *referrer = nullptr)
{
nsresult rv;
nsCOMPtr<nsIChannel> channel;
rv = NS_NewChannel(getter_AddRefs(channel),
uri,
nullptr,
loadGroup,
callbacks,
loadFlags);
if (NS_SUCCEEDED(rv)) {
nsCOMPtr<nsIHttpChannel> httpChannel(do_QueryInterface(channel));
if (httpChannel)
httpChannel->SetReferrer(referrer);
rv = NS_NewStreamLoader(result, observer);
if (NS_SUCCEEDED(rv))
rv = channel->AsyncOpen(*result, context);
}
return rv;
}
inline nsresult
NS_NewUnicharStreamLoader(nsIUnicharStreamLoader **result,
nsIUnicharStreamLoaderObserver *observer)
{
nsresult rv;
nsCOMPtr<nsIUnicharStreamLoader> loader =
do_CreateInstance(NS_UNICHARSTREAMLOADER_CONTRACTID, &rv);
if (NS_SUCCEEDED(rv)) {
rv = loader->Init(observer);
if (NS_SUCCEEDED(rv)) {
*result = nullptr;
loader.swap(*result);
}
}
return rv;
}
inline nsresult
NS_NewSyncStreamListener(nsIStreamListener **result,
nsIInputStream **stream)
{
nsresult rv;
nsCOMPtr<nsISyncStreamListener> listener =
do_CreateInstance(NS_SYNCSTREAMLISTENER_CONTRACTID, &rv);
if (NS_SUCCEEDED(rv)) {
rv = listener->GetInputStream(stream);
if (NS_SUCCEEDED(rv))
NS_ADDREF(*result = listener); // cannot use nsCOMPtr::swap
}
return rv;
}
/**
* Implement the nsIChannel::Open(nsIInputStream**) method using the channel's
* AsyncOpen method.
*
* NOTE: Reading from the returned nsIInputStream may spin the current
* thread's event queue, which could result in any event being processed.
*/
inline nsresult
NS_ImplementChannelOpen(nsIChannel *channel,
nsIInputStream **result)
{
nsCOMPtr<nsIStreamListener> listener;
nsCOMPtr<nsIInputStream> stream;
nsresult rv = NS_NewSyncStreamListener(getter_AddRefs(listener),
getter_AddRefs(stream));
if (NS_SUCCEEDED(rv)) {
rv = channel->AsyncOpen(listener, nullptr);
if (NS_SUCCEEDED(rv)) {
uint64_t n;
// block until the initial response is received or an error occurs.
rv = stream->Available(&n);
if (NS_SUCCEEDED(rv)) {
*result = nullptr;
stream.swap(*result);
}
}
}
return rv;
}
inline nsresult
NS_NewRequestObserverProxy(nsIRequestObserver **result,
nsIRequestObserver *observer,
nsIEventTarget *target = nullptr)
{
nsresult rv;
nsCOMPtr<nsIRequestObserverProxy> proxy =
do_CreateInstance(NS_REQUESTOBSERVERPROXY_CONTRACTID, &rv);
if (NS_SUCCEEDED(rv)) {
rv = proxy->Init(observer, target);
if (NS_SUCCEEDED(rv))
NS_ADDREF(*result = proxy); // cannot use nsCOMPtr::swap
}
return rv;
}
inline nsresult
NS_NewSimpleStreamListener(nsIStreamListener **result,
nsIOutputStream *sink,
nsIRequestObserver *observer = nullptr)
{
nsresult rv;
nsCOMPtr<nsISimpleStreamListener> listener =
do_CreateInstance(NS_SIMPLESTREAMLISTENER_CONTRACTID, &rv);
if (NS_SUCCEEDED(rv)) {
rv = listener->Init(sink, observer);
if (NS_SUCCEEDED(rv))
NS_ADDREF(*result = listener); // cannot use nsCOMPtr::swap
}
return rv;
}
inline nsresult
NS_CheckPortSafety(int32_t port,
const char *scheme,
nsIIOService *ioService = nullptr)
{
nsresult rv;
nsCOMPtr<nsIIOService> grip;
rv = net_EnsureIOService(&ioService, grip);
if (ioService) {
bool allow;
rv = ioService->AllowPort(port, scheme, &allow);
if (NS_SUCCEEDED(rv) && !allow) {
NS_WARNING("port blocked");
rv = NS_ERROR_PORT_ACCESS_NOT_ALLOWED;
}
}
return rv;
}
// Determine if this URI is using a safe port.
inline nsresult
NS_CheckPortSafety(nsIURI *uri) {
int32_t port;
nsresult rv = uri->GetPort(&port);
if (NS_FAILED(rv) || port == -1) // port undefined or default-valued
return NS_OK;
nsAutoCString scheme;
uri->GetScheme(scheme);
return NS_CheckPortSafety(port, scheme.get());
}
inline nsresult
NS_NewProxyInfo(const nsACString &type,
const nsACString &host,
int32_t port,
uint32_t flags,
nsIProxyInfo **result)
{
nsresult rv;
nsCOMPtr<nsIProtocolProxyService> pps =
do_GetService(NS_PROTOCOLPROXYSERVICE_CONTRACTID, &rv);
if (NS_SUCCEEDED(rv))
rv = pps->NewProxyInfo(type, host, port, flags, UINT32_MAX, nullptr,
result);
return rv;
}
inline nsresult
NS_GetFileProtocolHandler(nsIFileProtocolHandler **result,
nsIIOService *ioService = nullptr)
{
nsresult rv;
nsCOMPtr<nsIIOService> grip;
rv = net_EnsureIOService(&ioService, grip);
if (ioService) {
nsCOMPtr<nsIProtocolHandler> handler;
rv = ioService->GetProtocolHandler("file", getter_AddRefs(handler));
if (NS_SUCCEEDED(rv))
rv = CallQueryInterface(handler, result);
}
return rv;
}
inline nsresult
NS_GetFileFromURLSpec(const nsACString &inURL,
nsIFile **result,
nsIIOService *ioService = nullptr)
{
nsresult rv;
nsCOMPtr<nsIFileProtocolHandler> fileHandler;
rv = NS_GetFileProtocolHandler(getter_AddRefs(fileHandler), ioService);
if (NS_SUCCEEDED(rv))
rv = fileHandler->GetFileFromURLSpec(inURL, result);
return rv;
}
inline nsresult
NS_GetURLSpecFromFile(nsIFile *file,
nsACString &url,
nsIIOService *ioService = nullptr)
{
nsresult rv;
nsCOMPtr<nsIFileProtocolHandler> fileHandler;
rv = NS_GetFileProtocolHandler(getter_AddRefs(fileHandler), ioService);
if (NS_SUCCEEDED(rv))
rv = fileHandler->GetURLSpecFromFile(file, url);
return rv;
}
/**
* Converts the nsIFile to the corresponding URL string.
* Should only be called on files which are not directories,
* is otherwise identical to NS_GetURLSpecFromFile, but is
* usually more efficient.
* Warning: this restriction may not be enforced at runtime!
*/
inline nsresult
NS_GetURLSpecFromActualFile(nsIFile *file,
nsACString &url,
nsIIOService *ioService = nullptr)
{
nsresult rv;
nsCOMPtr<nsIFileProtocolHandler> fileHandler;
rv = NS_GetFileProtocolHandler(getter_AddRefs(fileHandler), ioService);
if (NS_SUCCEEDED(rv))
rv = fileHandler->GetURLSpecFromActualFile(file, url);
return rv;
}
/**
* Converts the nsIFile to the corresponding URL string.
* Should only be called on files which are directories,
* is otherwise identical to NS_GetURLSpecFromFile, but is
* usually more efficient.
* Warning: this restriction may not be enforced at runtime!
*/
inline nsresult
NS_GetURLSpecFromDir(nsIFile *file,
nsACString &url,
nsIIOService *ioService = nullptr)
{
nsresult rv;
nsCOMPtr<nsIFileProtocolHandler> fileHandler;
rv = NS_GetFileProtocolHandler(getter_AddRefs(fileHandler), ioService);
if (NS_SUCCEEDED(rv))
rv = fileHandler->GetURLSpecFromDir(file, url);
return rv;
}
/**
* Obtains the referrer for a given channel. This first tries to obtain the
* referrer from the property docshell.internalReferrer, and if that doesn't
* work and the channel is an nsIHTTPChannel, we check it's referrer property.
*
* @returns NS_ERROR_NOT_AVAILABLE if no referrer is available.
*/
inline nsresult
NS_GetReferrerFromChannel(nsIChannel *channel,
nsIURI **referrer)
{
nsresult rv = NS_ERROR_NOT_AVAILABLE;
*referrer = nullptr;
nsCOMPtr<nsIPropertyBag2> props(do_QueryInterface(channel));
if (props) {
// We have to check for a property on a property bag because the
// referrer may be empty for security reasons (for example, when loading
// an http page with an https referrer).
rv = props->GetPropertyAsInterface(NS_LITERAL_STRING("docshell.internalReferrer"),
NS_GET_IID(nsIURI),
reinterpret_cast<void **>(referrer));
if (NS_FAILED(rv))
*referrer = nullptr;
}
// if that didn't work, we can still try to get the referrer from the
// nsIHttpChannel (if we can QI to it)
if (!(*referrer)) {
nsCOMPtr<nsIHttpChannel> chan(do_QueryInterface(channel));
if (chan) {
rv = chan->GetReferrer(referrer);
if (NS_FAILED(rv))
*referrer = nullptr;
}
}
return rv;
}
inline nsresult
NS_ParseContentType(const nsACString &rawContentType,
nsCString &contentType,
nsCString &contentCharset)
{
// contentCharset is left untouched if not present in rawContentType
nsresult rv;
nsCOMPtr<nsINetUtil> util = do_GetNetUtil(&rv);
NS_ENSURE_SUCCESS(rv, rv);
nsCString charset;
bool hadCharset;
rv = util->ParseContentType(rawContentType, charset, &hadCharset,
contentType);
if (NS_SUCCEEDED(rv) && hadCharset)
contentCharset = charset;
return rv;
}
inline nsresult
NS_ExtractCharsetFromContentType(const nsACString &rawContentType,
nsCString &contentCharset,
bool *hadCharset,
int32_t *charsetStart,
int32_t *charsetEnd)
{
// contentCharset is left untouched if not present in rawContentType
nsresult rv;
nsCOMPtr<nsINetUtil> util = do_GetNetUtil(&rv);
NS_ENSURE_SUCCESS(rv, rv);
return util->ExtractCharsetFromContentType(rawContentType,
contentCharset,
charsetStart,
charsetEnd,
hadCharset);
}
inline nsresult
NS_NewLocalFileInputStream(nsIInputStream **result,
nsIFile *file,
int32_t ioFlags = -1,
int32_t perm = -1,
int32_t behaviorFlags = 0)
{
nsresult rv;
nsCOMPtr<nsIFileInputStream> in =
do_CreateInstance(NS_LOCALFILEINPUTSTREAM_CONTRACTID, &rv);
if (NS_SUCCEEDED(rv)) {
rv = in->Init(file, ioFlags, perm, behaviorFlags);
if (NS_SUCCEEDED(rv))
in.forget(result);
}
return rv;
}
inline nsresult
NS_NewPartialLocalFileInputStream(nsIInputStream **result,
nsIFile *file,
uint64_t offset,
uint64_t length,
int32_t ioFlags = -1,
int32_t perm = -1,
int32_t behaviorFlags = 0)
{
nsresult rv;
nsCOMPtr<nsIPartialFileInputStream> in =
do_CreateInstance(NS_PARTIALLOCALFILEINPUTSTREAM_CONTRACTID, &rv);
if (NS_SUCCEEDED(rv)) {
rv = in->Init(file, offset, length, ioFlags, perm, behaviorFlags);
if (NS_SUCCEEDED(rv))
rv = CallQueryInterface(in, result);
}
return rv;
}
inline nsresult
NS_NewLocalFileOutputStream(nsIOutputStream **result,
nsIFile *file,
int32_t ioFlags = -1,
int32_t perm = -1,
int32_t behaviorFlags = 0)
{
nsresult rv;
nsCOMPtr<nsIFileOutputStream> out =
do_CreateInstance(NS_LOCALFILEOUTPUTSTREAM_CONTRACTID, &rv);
if (NS_SUCCEEDED(rv)) {
rv = out->Init(file, ioFlags, perm, behaviorFlags);
if (NS_SUCCEEDED(rv))
out.forget(result);
}
return rv;
}
// returns a file output stream which can be QI'ed to nsISafeOutputStream.
inline nsresult
NS_NewSafeLocalFileOutputStream(nsIOutputStream **result,
nsIFile *file,
int32_t ioFlags = -1,
int32_t perm = -1,
int32_t behaviorFlags = 0)
{
nsresult rv;
nsCOMPtr<nsIFileOutputStream> out =
do_CreateInstance(NS_SAFELOCALFILEOUTPUTSTREAM_CONTRACTID, &rv);
if (NS_SUCCEEDED(rv)) {
rv = out->Init(file, ioFlags, perm, behaviorFlags);
if (NS_SUCCEEDED(rv))
out.forget(result);
}
return rv;
}
inline nsresult
NS_NewLocalFileStream(nsIFileStream **result,
nsIFile *file,
int32_t ioFlags = -1,
int32_t perm = -1,
int32_t behaviorFlags = 0)
{
nsresult rv;
nsCOMPtr<nsIFileStream> stream =
do_CreateInstance(NS_LOCALFILESTREAM_CONTRACTID, &rv);
if (NS_SUCCEEDED(rv)) {
rv = stream->Init(file, ioFlags, perm, behaviorFlags);
if (NS_SUCCEEDED(rv))
stream.forget(result);
}
return rv;
}
// returns the input end of a pipe. the output end of the pipe
// is attached to the original stream. data from the original
// stream is read into the pipe on a background thread.
inline nsresult
NS_BackgroundInputStream(nsIInputStream **result,
nsIInputStream *stream,
uint32_t segmentSize = 0,
uint32_t segmentCount = 0)
{
nsresult rv;
nsCOMPtr<nsIStreamTransportService> sts =
do_GetService(NS_STREAMTRANSPORTSERVICE_CONTRACTID, &rv);
if (NS_SUCCEEDED(rv)) {
nsCOMPtr<nsITransport> inTransport;
rv = sts->CreateInputTransport(stream, int64_t(-1), int64_t(-1),
true, getter_AddRefs(inTransport));
if (NS_SUCCEEDED(rv))
rv = inTransport->OpenInputStream(nsITransport::OPEN_BLOCKING,
segmentSize, segmentCount,
result);
}
return rv;
}
// returns the output end of a pipe. the input end of the pipe
// is attached to the original stream. data written to the pipe
// is copied to the original stream on a background thread.
inline nsresult
NS_BackgroundOutputStream(nsIOutputStream **result,
nsIOutputStream *stream,
uint32_t segmentSize = 0,
uint32_t segmentCount = 0)
{
nsresult rv;
nsCOMPtr<nsIStreamTransportService> sts =
do_GetService(NS_STREAMTRANSPORTSERVICE_CONTRACTID, &rv);
if (NS_SUCCEEDED(rv)) {
nsCOMPtr<nsITransport> inTransport;
rv = sts->CreateOutputTransport(stream, int64_t(-1), int64_t(-1),
true, getter_AddRefs(inTransport));
if (NS_SUCCEEDED(rv))
rv = inTransport->OpenOutputStream(nsITransport::OPEN_BLOCKING,
segmentSize, segmentCount,
result);
}
return rv;
}
inline nsresult
NS_NewBufferedInputStream(nsIInputStream **result,
nsIInputStream *str,
uint32_t bufferSize)
{
nsresult rv;
nsCOMPtr<nsIBufferedInputStream> in =
do_CreateInstance(NS_BUFFEREDINPUTSTREAM_CONTRACTID, &rv);
if (NS_SUCCEEDED(rv)) {
rv = in->Init(str, bufferSize);
if (NS_SUCCEEDED(rv))
NS_ADDREF(*result = in); // cannot use nsCOMPtr::swap
}
return rv;
}
// note: the resulting stream can be QI'ed to nsISafeOutputStream iff the
// provided stream supports it.
inline nsresult
NS_NewBufferedOutputStream(nsIOutputStream **result,
nsIOutputStream *str,
uint32_t bufferSize)
{
nsresult rv;
nsCOMPtr<nsIBufferedOutputStream> out =
do_CreateInstance(NS_BUFFEREDOUTPUTSTREAM_CONTRACTID, &rv);
if (NS_SUCCEEDED(rv)) {
rv = out->Init(str, bufferSize);
if (NS_SUCCEEDED(rv))
NS_ADDREF(*result = out); // cannot use nsCOMPtr::swap
}
return rv;
}
/**
* Attempts to buffer a given output stream. If this fails, it returns the
* passed-in output stream.
*
* @param aOutputStream
* The output stream we want to buffer. This cannot be null.
* @param aBufferSize
* The size of the buffer for the buffered output stream.
* @returns an nsIOutputStream that is buffered with the specified buffer size,
* or is aOutputStream if creating the new buffered stream failed.
*/
inline already_AddRefed<nsIOutputStream>
NS_BufferOutputStream(nsIOutputStream *aOutputStream,
uint32_t aBufferSize)
{
NS_ASSERTION(aOutputStream, "No output stream given!");
nsCOMPtr<nsIOutputStream> bos;
nsresult rv = NS_NewBufferedOutputStream(getter_AddRefs(bos), aOutputStream,
aBufferSize);
if (NS_SUCCEEDED(rv))
return bos.forget();
NS_ADDREF(aOutputStream);
return aOutputStream;
}
// returns an input stream compatible with nsIUploadChannel::SetUploadStream()
inline nsresult
NS_NewPostDataStream(nsIInputStream **result,
bool isFile,
const nsACString &data,
uint32_t encodeFlags,
nsIIOService *unused = nullptr)
{
nsresult rv;
if (isFile) {
nsCOMPtr<nsIFile> file;
nsCOMPtr<nsIInputStream> fileStream;
rv = NS_NewNativeLocalFile(data, false, getter_AddRefs(file));
if (NS_SUCCEEDED(rv)) {
rv = NS_NewLocalFileInputStream(getter_AddRefs(fileStream), file);
if (NS_SUCCEEDED(rv)) {
// wrap the file stream with a buffered input stream
rv = NS_NewBufferedInputStream(result, fileStream, 8192);
}
}
return rv;
}
// otherwise, create a string stream for the data (copies)
nsCOMPtr<nsIStringInputStream> stream
(do_CreateInstance("@mozilla.org/io/string-input-stream;1", &rv));
if (NS_FAILED(rv))
return rv;
rv = stream->SetData(data.BeginReading(), data.Length());
if (NS_FAILED(rv))
return rv;
NS_ADDREF(*result = stream);
return NS_OK;
}
inline nsresult
NS_ReadInputStreamToBuffer(nsIInputStream *aInputStream,
void** aDest,
uint32_t aCount)
{
nsresult rv;
if (!*aDest) {
*aDest = malloc(aCount);
if (!*aDest)
return NS_ERROR_OUT_OF_MEMORY;
}
char * p = reinterpret_cast<char*>(*aDest);
uint32_t bytesRead;
uint32_t totalRead = 0;
while (1) {
rv = aInputStream->Read(p + totalRead, aCount - totalRead, &bytesRead);
if (!NS_SUCCEEDED(rv))
return rv;
totalRead += bytesRead;
if (totalRead == aCount)
break;
// if Read reads 0 bytes, we've hit EOF
if (bytesRead == 0)
return NS_ERROR_UNEXPECTED;
}
return rv;
}
// external code can't see fallible_t
#ifdef MOZILLA_INTERNAL_API
inline nsresult
NS_ReadInputStreamToString(nsIInputStream *aInputStream,
nsACString &aDest,
uint32_t aCount)
{
if (!aDest.SetLength(aCount, mozilla::fallible_t()))
return NS_ERROR_OUT_OF_MEMORY;
void* dest = aDest.BeginWriting();
return NS_ReadInputStreamToBuffer(aInputStream, &dest, aCount);
}
#endif
inline nsresult
NS_LoadPersistentPropertiesFromURI(nsIPersistentProperties **result,
nsIURI *uri,
nsIIOService *ioService = nullptr)
{
nsCOMPtr<nsIInputStream> in;
nsresult rv = NS_OpenURI(getter_AddRefs(in), uri, ioService);
if (NS_SUCCEEDED(rv)) {
nsCOMPtr<nsIPersistentProperties> properties =
do_CreateInstance(NS_PERSISTENTPROPERTIES_CONTRACTID, &rv);
if (NS_SUCCEEDED(rv)) {
rv = properties->Load(in);
if (NS_SUCCEEDED(rv)) {
*result = nullptr;
properties.swap(*result);
}
}
}
return rv;
}
inline nsresult
NS_LoadPersistentPropertiesFromURISpec(nsIPersistentProperties **result,
const nsACString &spec,
const char *charset = nullptr,
nsIURI *baseURI = nullptr,
nsIIOService *ioService = nullptr)
{
nsCOMPtr<nsIURI> uri;
nsresult rv =
NS_NewURI(getter_AddRefs(uri), spec, charset, baseURI, ioService);
if (NS_SUCCEEDED(rv))
rv = NS_LoadPersistentPropertiesFromURI(result, uri, ioService);
return rv;
}
/**
* NS_QueryNotificationCallbacks implements the canonical algorithm for
* querying interfaces from a channel's notification callbacks. It first
* searches the channel's notificationCallbacks attribute, and if the interface
* is not found there, then it inspects the notificationCallbacks attribute of
* the channel's loadGroup.
*
* Note: templatized only because nsIWebSocketChannel is currently not an
* nsIChannel.
*/
template <class T> inline void
NS_QueryNotificationCallbacks(T *channel,
const nsIID &iid,
void **result)
{
NS_PRECONDITION(channel, "null channel");
*result = nullptr;
nsCOMPtr<nsIInterfaceRequestor> cbs;
channel->GetNotificationCallbacks(getter_AddRefs(cbs));
if (cbs)
cbs->GetInterface(iid, result);
if (!*result) {
// try load group's notification callbacks...
nsCOMPtr<nsILoadGroup> loadGroup;
channel->GetLoadGroup(getter_AddRefs(loadGroup));
if (loadGroup) {
loadGroup->GetNotificationCallbacks(getter_AddRefs(cbs));
if (cbs)
cbs->GetInterface(iid, result);
}
}
}
// template helper:
// Note: "class C" templatized only because nsIWebSocketChannel is currently not
// an nsIChannel.
template <class C, class T> inline void
NS_QueryNotificationCallbacks(C *channel,
nsCOMPtr<T> &result)
{
NS_QueryNotificationCallbacks(channel, NS_GET_TEMPLATE_IID(T),
getter_AddRefs(result));
}
/**
* Alternate form of NS_QueryNotificationCallbacks designed for use by
* nsIChannel implementations.
*/
inline void
NS_QueryNotificationCallbacks(nsIInterfaceRequestor *callbacks,
nsILoadGroup *loadGroup,
const nsIID &iid,
void **result)
{
*result = nullptr;
if (callbacks)
callbacks->GetInterface(iid, result);
if (!*result) {
// try load group's notification callbacks...
if (loadGroup) {
nsCOMPtr<nsIInterfaceRequestor> cbs;
loadGroup->GetNotificationCallbacks(getter_AddRefs(cbs));
if (cbs)
cbs->GetInterface(iid, result);
}
}
}
/**
* Returns true if channel is using Private Browsing, or false if not.
* Returns false if channel's callbacks don't implement nsILoadContext.
*/
inline bool
NS_UsePrivateBrowsing(nsIChannel *channel)
{
bool isPrivate = false;
bool isOverriden = false;
nsCOMPtr<nsIPrivateBrowsingChannel> pbChannel = do_QueryInterface(channel);
if (pbChannel &&
NS_SUCCEEDED(pbChannel->IsPrivateModeOverriden(&isPrivate, &isOverriden)) &&
isOverriden) {
return isPrivate;
}
nsCOMPtr<nsILoadContext> loadContext;
NS_QueryNotificationCallbacks(channel, loadContext);
return loadContext && loadContext->UsePrivateBrowsing();
}
// Constants duplicated from nsIScriptSecurityManager so we avoid having necko
// know about script security manager.
#define NECKO_NO_APP_ID 0
#define NECKO_UNKNOWN_APP_ID UINT32_MAX
/**
* Gets AppId and isInBrowserElement from channel's nsILoadContext.
* Returns false if error or channel's callbacks don't implement nsILoadContext.
*/
inline bool
NS_GetAppInfo(nsIChannel *aChannel, uint32_t *aAppID, bool *aIsInBrowserElement)
{
nsCOMPtr<nsILoadContext> loadContext;
NS_QueryNotificationCallbacks(aChannel, loadContext);
if (!loadContext) {
return false;
}
nsresult rv = loadContext->GetAppId(aAppID);
NS_ENSURE_SUCCESS(rv, false);
rv = loadContext->GetIsInBrowserElement(aIsInBrowserElement);
NS_ENSURE_SUCCESS(rv, false);
return true;
}
#define TOPIC_WEB_APP_CLEAR_DATA "webapps-clear-data"
/**
* Gets appId and browserOnly parameters from the TOPIC_WEB_APP_CLEAR_DATA
* nsIObserverService notification. Used when clearing user data or
* uninstalling web apps.
*/
inline nsresult
NS_GetAppInfoFromClearDataNotification(nsISupports *aSubject,
uint32_t *aAppID, bool* aBrowserOnly)
{
nsresult rv;
nsCOMPtr<mozIApplicationClearPrivateDataParams>
clearParams(do_QueryInterface(aSubject));
MOZ_ASSERT(clearParams);
if (!clearParams) {
return NS_ERROR_UNEXPECTED;
}
uint32_t appId;
rv = clearParams->GetAppId(&appId);
MOZ_ASSERT(NS_SUCCEEDED(rv));
MOZ_ASSERT(appId != NECKO_NO_APP_ID);
MOZ_ASSERT(appId != NECKO_UNKNOWN_APP_ID);
NS_ENSURE_SUCCESS(rv, rv);
if (appId == NECKO_NO_APP_ID || appId == NECKO_UNKNOWN_APP_ID) {
return NS_ERROR_UNEXPECTED;
}
bool browserOnly = false;
rv = clearParams->GetBrowserOnly(&browserOnly);
MOZ_ASSERT(NS_SUCCEEDED(rv));
NS_ENSURE_SUCCESS(rv, rv);
*aAppID = appId;
*aBrowserOnly = browserOnly;
return NS_OK;
}
/**
* Wraps an nsIAuthPrompt so that it can be used as an nsIAuthPrompt2. This
* method is provided mainly for use by other methods in this file.
*
* *aAuthPrompt2 should be set to null before calling this function.
*/
inline void
NS_WrapAuthPrompt(nsIAuthPrompt *aAuthPrompt, nsIAuthPrompt2** aAuthPrompt2)
{
nsCOMPtr<nsIAuthPromptAdapterFactory> factory =
do_GetService(NS_AUTHPROMPT_ADAPTER_FACTORY_CONTRACTID);
if (!factory)
return;
NS_WARNING("Using deprecated nsIAuthPrompt");
factory->CreateAdapter(aAuthPrompt, aAuthPrompt2);
}
/**
* Gets an auth prompt from an interface requestor. This takes care of wrapping
* an nsIAuthPrompt so that it can be used as an nsIAuthPrompt2.
*/
inline void
NS_QueryAuthPrompt2(nsIInterfaceRequestor *aCallbacks,
nsIAuthPrompt2 **aAuthPrompt)
{
CallGetInterface(aCallbacks, aAuthPrompt);
if (*aAuthPrompt)
return;
// Maybe only nsIAuthPrompt is provided and we have to wrap it.
nsCOMPtr<nsIAuthPrompt> prompt(do_GetInterface(aCallbacks));
if (!prompt)
return;
NS_WrapAuthPrompt(prompt, aAuthPrompt);
}
/**
* Gets an nsIAuthPrompt2 from a channel. Use this instead of
* NS_QueryNotificationCallbacks for better backwards compatibility.
*/
inline void
NS_QueryAuthPrompt2(nsIChannel *aChannel,
nsIAuthPrompt2 **aAuthPrompt)
{
*aAuthPrompt = nullptr;
// We want to use any auth prompt we can find on the channel's callbacks,
// and if that fails use the loadgroup's prompt (if any)
// Therefore, we can't just use NS_QueryNotificationCallbacks, because
// that would prefer a loadgroup's nsIAuthPrompt2 over a channel's
// nsIAuthPrompt.
nsCOMPtr<nsIInterfaceRequestor> callbacks;
aChannel->GetNotificationCallbacks(getter_AddRefs(callbacks));
if (callbacks) {
NS_QueryAuthPrompt2(callbacks, aAuthPrompt);
if (*aAuthPrompt)
return;
}
nsCOMPtr<nsILoadGroup> group;
aChannel->GetLoadGroup(getter_AddRefs(group));
if (!group)
return;
group->GetNotificationCallbacks(getter_AddRefs(callbacks));
if (!callbacks)
return;
NS_QueryAuthPrompt2(callbacks, aAuthPrompt);
}
/* template helper */
template <class T> inline void
NS_QueryNotificationCallbacks(nsIInterfaceRequestor *callbacks,
nsILoadGroup *loadGroup,
nsCOMPtr<T> &result)
{
NS_QueryNotificationCallbacks(callbacks, loadGroup,
NS_GET_TEMPLATE_IID(T),
getter_AddRefs(result));
}
/* template helper */
template <class T> inline void
NS_QueryNotificationCallbacks(const nsCOMPtr<nsIInterfaceRequestor> &aCallbacks,
const nsCOMPtr<nsILoadGroup> &aLoadGroup,
nsCOMPtr<T> &aResult)
{
NS_QueryNotificationCallbacks(aCallbacks.get(), aLoadGroup.get(), aResult);
}
/* template helper */
template <class T> inline void
NS_QueryNotificationCallbacks(const nsCOMPtr<nsIChannel> &aChannel,
nsCOMPtr<T> &aResult)
{
NS_QueryNotificationCallbacks(aChannel.get(), aResult);
}
/**
* This function returns a nsIInterfaceRequestor instance that returns the
* same result as NS_QueryNotificationCallbacks when queried. It is useful
* as the value for nsISocketTransport::securityCallbacks.
*/
inline nsresult
NS_NewNotificationCallbacksAggregation(nsIInterfaceRequestor *callbacks,
nsILoadGroup *loadGroup,
nsIInterfaceRequestor **result)
{
nsCOMPtr<nsIInterfaceRequestor> cbs;
if (loadGroup)
loadGroup->GetNotificationCallbacks(getter_AddRefs(cbs));
return NS_NewInterfaceRequestorAggregation(callbacks, cbs, result);
}
/**
* Helper function for testing online/offline state of the browser.
*/
inline bool
NS_IsOffline()
{
bool offline = true;
nsCOMPtr<nsIIOService> ios = do_GetIOService();
if (ios)
ios->GetOffline(&offline);
return offline;
}
/**
* Helper functions for implementing nsINestedURI::innermostURI.
*
* Note that NS_DoImplGetInnermostURI is "private" -- call
* NS_ImplGetInnermostURI instead.
*/
inline nsresult
NS_DoImplGetInnermostURI(nsINestedURI* nestedURI, nsIURI** result)
{
NS_PRECONDITION(nestedURI, "Must have a nested URI!");
NS_PRECONDITION(!*result, "Must have null *result");
nsCOMPtr<nsIURI> inner;
nsresult rv = nestedURI->GetInnerURI(getter_AddRefs(inner));
NS_ENSURE_SUCCESS(rv, rv);
// We may need to loop here until we reach the innermost
// URI.
nsCOMPtr<nsINestedURI> nestedInner(do_QueryInterface(inner));
while (nestedInner) {
rv = nestedInner->GetInnerURI(getter_AddRefs(inner));
NS_ENSURE_SUCCESS(rv, rv);
nestedInner = do_QueryInterface(inner);
}
// Found the innermost one if we reach here.
inner.swap(*result);
return rv;
}
inline nsresult
NS_ImplGetInnermostURI(nsINestedURI* nestedURI, nsIURI** result)
{
// Make it safe to use swap()
*result = nullptr;
return NS_DoImplGetInnermostURI(nestedURI, result);
}
/**
* Helper function that ensures that |result| is a URI that's safe to
* return. If |uri| is immutable, just returns it, otherwise returns
* a clone. |uri| must not be null.
*/
inline nsresult
NS_EnsureSafeToReturn(nsIURI* uri, nsIURI** result)
{
NS_PRECONDITION(uri, "Must have a URI");
// Assume mutable until told otherwise
bool isMutable = true;
nsCOMPtr<nsIMutable> mutableObj(do_QueryInterface(uri));
if (mutableObj) {
nsresult rv = mutableObj->GetMutable(&isMutable);
isMutable = NS_FAILED(rv) || isMutable;
}
if (!isMutable) {
NS_ADDREF(*result = uri);
return NS_OK;
}
nsresult rv = uri->Clone(result);
if (NS_SUCCEEDED(rv) && !*result) {
NS_ERROR("nsIURI.clone contract was violated");
return NS_ERROR_UNEXPECTED;
}
return rv;
}
/**
* Helper function that tries to set the argument URI to be immutable
*/
inline void
NS_TryToSetImmutable(nsIURI* uri)
{
nsCOMPtr<nsIMutable> mutableObj(do_QueryInterface(uri));
if (mutableObj) {
mutableObj->SetMutable(false);
}
}
/**
* Helper function for calling ToImmutableURI. If all else fails, returns
* the input URI. The optional second arg indicates whether we had to fall
* back to the input URI. Passing in a null URI is ok.
*/
inline already_AddRefed<nsIURI>
NS_TryToMakeImmutable(nsIURI* uri,
nsresult* outRv = nullptr)
{
nsresult rv;
nsCOMPtr<nsINetUtil> util = do_GetNetUtil(&rv);
nsIURI* result = nullptr;
if (NS_SUCCEEDED(rv)) {
NS_ASSERTION(util, "do_GetNetUtil lied");
rv = util->ToImmutableURI(uri, &result);
}
if (NS_FAILED(rv)) {
NS_IF_ADDREF(result = uri);
}
if (outRv) {
*outRv = rv;
}
return result;
}
/**
* Helper function for testing whether the given URI, or any of its
* inner URIs, has all the given protocol flags.
*/
inline nsresult
NS_URIChainHasFlags(nsIURI *uri,
uint32_t flags,
bool *result)
{
nsresult rv;
nsCOMPtr<nsINetUtil> util = do_GetNetUtil(&rv);
NS_ENSURE_SUCCESS(rv, rv);
return util->URIChainHasFlags(uri, flags, result);
}
/**
* Helper function for getting the innermost URI for a given URI. The return
* value could be just the object passed in if it's not a nested URI.
*/
inline already_AddRefed<nsIURI>
NS_GetInnermostURI(nsIURI *uri)
{
NS_PRECONDITION(uri, "Must have URI");
nsCOMPtr<nsINestedURI> nestedURI(do_QueryInterface(uri));
if (!nestedURI) {
NS_ADDREF(uri);
return uri;
}
nsresult rv = nestedURI->GetInnermostURI(&uri);
if (NS_FAILED(rv)) {
return nullptr;
}
return uri;
}
/**
* Get the "final" URI for a channel. This is either the same as GetURI or
* GetOriginalURI, depending on whether this channel has
* nsIChanel::LOAD_REPLACE set. For channels without that flag set, the final
* URI is the original URI, while for ones with the flag the final URI is the
* channel URI.
*/
inline nsresult
NS_GetFinalChannelURI(nsIChannel* channel, nsIURI** uri)
{
*uri = nullptr;
nsLoadFlags loadFlags = 0;
nsresult rv = channel->GetLoadFlags(&loadFlags);
NS_ENSURE_SUCCESS(rv, rv);
if (loadFlags & nsIChannel::LOAD_REPLACE) {
return channel->GetURI(uri);
}
return channel->GetOriginalURI(uri);
}
// NS_SecurityHashURI must return the same hash value for any two URIs that
// compare equal according to NS_SecurityCompareURIs. Unfortunately, in the
// case of files, it's not clear we can do anything better than returning
// the schemeHash, so hashing files degenerates to storing them in a list.
inline uint32_t
NS_SecurityHashURI(nsIURI* aURI)
{
nsCOMPtr<nsIURI> baseURI = NS_GetInnermostURI(aURI);
nsAutoCString scheme;
uint32_t schemeHash = 0;
if (NS_SUCCEEDED(baseURI->GetScheme(scheme)))
schemeHash = mozilla::HashString(scheme);
// TODO figure out how to hash file:// URIs
if (scheme.EqualsLiteral("file"))
return schemeHash; // sad face
if (scheme.EqualsLiteral("imap") ||
scheme.EqualsLiteral("mailbox") ||
scheme.EqualsLiteral("news"))
{
nsAutoCString spec;
uint32_t specHash;
nsresult res = baseURI->GetSpec(spec);
if (NS_SUCCEEDED(res))
specHash = mozilla::HashString(spec);
else
specHash = static_cast<uint32_t>(res);
return specHash;
}
nsAutoCString host;
uint32_t hostHash = 0;
if (NS_SUCCEEDED(baseURI->GetAsciiHost(host)))
hostHash = mozilla::HashString(host);
return mozilla::AddToHash(schemeHash, hostHash, NS_GetRealPort(baseURI));
}
inline bool
NS_SecurityCompareURIs(nsIURI* aSourceURI,
nsIURI* aTargetURI,
bool aStrictFileOriginPolicy)
{
// Note that this is not an Equals() test on purpose -- for URIs that don't
// support host/port, we want equality to basically be object identity, for
// security purposes. Otherwise, for example, two javascript: URIs that
// are otherwise unrelated could end up "same origin", which would be
// unfortunate.
if (aSourceURI && aSourceURI == aTargetURI)
{
return true;
}
if (!aTargetURI || !aSourceURI)
{
return false;
}
// If either URI is a nested URI, get the base URI
nsCOMPtr<nsIURI> sourceBaseURI = NS_GetInnermostURI(aSourceURI);
nsCOMPtr<nsIURI> targetBaseURI = NS_GetInnermostURI(aTargetURI);
// If either uri is an nsIURIWithPrincipal
nsCOMPtr<nsIURIWithPrincipal> uriPrinc = do_QueryInterface(sourceBaseURI);
if (uriPrinc) {
uriPrinc->GetPrincipalUri(getter_AddRefs(sourceBaseURI));
}
uriPrinc = do_QueryInterface(targetBaseURI);
if (uriPrinc) {
uriPrinc->GetPrincipalUri(getter_AddRefs(targetBaseURI));
}
if (!sourceBaseURI || !targetBaseURI)
return false;
// Compare schemes
nsAutoCString targetScheme;
bool sameScheme = false;
if (NS_FAILED( targetBaseURI->GetScheme(targetScheme) ) ||
NS_FAILED( sourceBaseURI->SchemeIs(targetScheme.get(), &sameScheme) ) ||
!sameScheme)
{
// Not same-origin if schemes differ
return false;
}
// special handling for file: URIs
if (targetScheme.EqualsLiteral("file"))
{
// in traditional unsafe behavior all files are the same origin
if (!aStrictFileOriginPolicy)
return true;
nsCOMPtr<nsIFileURL> sourceFileURL(do_QueryInterface(sourceBaseURI));
nsCOMPtr<nsIFileURL> targetFileURL(do_QueryInterface(targetBaseURI));
if (!sourceFileURL || !targetFileURL)
return false;
nsCOMPtr<nsIFile> sourceFile, targetFile;
sourceFileURL->GetFile(getter_AddRefs(sourceFile));
targetFileURL->GetFile(getter_AddRefs(targetFile));
if (!sourceFile || !targetFile)
return false;
// Otherwise they had better match
bool filesAreEqual = false;
nsresult rv = sourceFile->Equals(targetFile, &filesAreEqual);
return NS_SUCCEEDED(rv) && filesAreEqual;
}
// Special handling for mailnews schemes
if (targetScheme.EqualsLiteral("imap") ||
targetScheme.EqualsLiteral("mailbox") ||
targetScheme.EqualsLiteral("news"))
{
// Each message is a distinct trust domain; use the
// whole spec for comparison
nsAutoCString targetSpec;
nsAutoCString sourceSpec;
return ( NS_SUCCEEDED( targetBaseURI->GetSpec(targetSpec) ) &&
NS_SUCCEEDED( sourceBaseURI->GetSpec(sourceSpec) ) &&
targetSpec.Equals(sourceSpec) );
}
// Compare hosts
nsAutoCString targetHost;
nsAutoCString sourceHost;
if (NS_FAILED( targetBaseURI->GetAsciiHost(targetHost) ) ||
NS_FAILED( sourceBaseURI->GetAsciiHost(sourceHost) ))
{
return false;
}
nsCOMPtr<nsIStandardURL> targetURL(do_QueryInterface(targetBaseURI));
nsCOMPtr<nsIStandardURL> sourceURL(do_QueryInterface(sourceBaseURI));
if (!targetURL || !sourceURL)
{
return false;
}
#ifdef MOZILLA_INTERNAL_API
if (!targetHost.Equals(sourceHost, nsCaseInsensitiveCStringComparator() ))
#else
if (!targetHost.Equals(sourceHost, CaseInsensitiveCompare))
#endif
{
return false;
}
return NS_GetRealPort(targetBaseURI) == NS_GetRealPort(sourceBaseURI);
}
inline bool
NS_IsInternalSameURIRedirect(nsIChannel *aOldChannel,
nsIChannel *aNewChannel,
uint32_t aFlags)
{
if (!(aFlags & nsIChannelEventSink::REDIRECT_INTERNAL)) {
return false;
}
nsCOMPtr<nsIURI> oldURI, newURI;
aOldChannel->GetURI(getter_AddRefs(oldURI));
aNewChannel->GetURI(getter_AddRefs(newURI));
if (!oldURI || !newURI) {
return false;
}
bool res;
return NS_SUCCEEDED(oldURI->Equals(newURI, &res)) && res;
}
inline nsresult
NS_LinkRedirectChannels(uint32_t channelId,
nsIParentChannel *parentChannel,
nsIChannel** _result)
{
nsresult rv;
nsCOMPtr<nsIRedirectChannelRegistrar> registrar =
do_GetService("@mozilla.org/redirectchannelregistrar;1", &rv);
NS_ENSURE_SUCCESS(rv, rv);
return registrar->LinkChannels(channelId,
parentChannel,
_result);
}
/**
* Helper function to create a random URL string that's properly formed
* but guaranteed to be invalid.
*/
#define NS_FAKE_SCHEME "http://"
#define NS_FAKE_TLD ".invalid"
inline nsresult
NS_MakeRandomInvalidURLString(nsCString& result)
{
nsresult rv;
nsCOMPtr<nsIUUIDGenerator> uuidgen =
do_GetService("@mozilla.org/uuid-generator;1", &rv);
NS_ENSURE_SUCCESS(rv, rv);
nsID idee;
rv = uuidgen->GenerateUUIDInPlace(&idee);
NS_ENSURE_SUCCESS(rv, rv);
char chars[NSID_LENGTH];
idee.ToProvidedString(chars);
result.AssignLiteral(NS_FAKE_SCHEME);
// Strip off the '{' and '}' at the beginning and end of the UUID
result.Append(chars + 1, NSID_LENGTH - 3);
result.AppendLiteral(NS_FAKE_TLD);
return NS_OK;
}
#undef NS_FAKE_SCHEME
#undef NS_FAKE_TLD
/**
* Helper function to determine whether urlString is Java-compatible --
* whether it can be passed to the Java URL(String) constructor without the
* latter throwing a MalformedURLException, or without Java otherwise
* mishandling it. This function (in effect) implements a scheme whitelist
* for Java.
*/
inline nsresult
NS_CheckIsJavaCompatibleURLString(nsCString& urlString, bool *result)
{
*result = false; // Default to "no"
nsresult rv = NS_OK;
nsCOMPtr<nsIURLParser> urlParser =
do_GetService(NS_STDURLPARSER_CONTRACTID, &rv);
if (NS_FAILED(rv) || !urlParser)
return NS_ERROR_FAILURE;
bool compatible = true;
uint32_t schemePos = 0;
int32_t schemeLen = 0;
urlParser->ParseURL(urlString.get(), -1, &schemePos, &schemeLen,
nullptr, nullptr, nullptr, nullptr);
if (schemeLen != -1) {
nsCString scheme;
scheme.Assign(urlString.get() + schemePos, schemeLen);
// By default Java only understands a small number of URL schemes, and of
// these only some can legitimately represent a browser page's "origin"
// (and be something we can legitimately expect Java to handle ... or not
// to mishandle).
//
// Besides those listed below, the OJI plugin understands the "jar",
// "mailto", "netdoc", "javascript" and "rmi" schemes, and Java Plugin2
// also understands the "about" scheme. We actually pass "about" URLs
// to Java ("about:blank" when processing a javascript: URL (one that
// calls Java) from the location bar of a blank page, and (in FF4 and up)
// "about:home" when processing a javascript: URL from the home page).
// And Java doesn't appear to mishandle them (for example it doesn't allow
// connections to "about" URLs). But it doesn't make any sense to do
// same-origin checks on "about" URLs, so we don't include them in our
// scheme whitelist.
//
// The OJI plugin doesn't understand "chrome" URLs (only Java Plugin2
// does) -- so we mustn't pass them to the OJI plugin. But we do need to
// pass "chrome" URLs to Java Plugin2: Java Plugin2 grants additional
// privileges to chrome "origins", and some extensions take advantage of
// this. For more information see bug 620773.
//
// As of FF4, we no longer support the OJI plugin.
if (PL_strcasecmp(scheme.get(), "http") &&
PL_strcasecmp(scheme.get(), "https") &&
PL_strcasecmp(scheme.get(), "file") &&
PL_strcasecmp(scheme.get(), "ftp") &&
PL_strcasecmp(scheme.get(), "gopher") &&
PL_strcasecmp(scheme.get(), "chrome"))
compatible = false;
} else {
compatible = false;
}
*result = compatible;
return NS_OK;
}
/** Given the first (disposition) token from a Content-Disposition header,
* tell whether it indicates the content is inline or attachment
* @param aDispToken the disposition token from the content-disposition header
*/
inline uint32_t
NS_GetContentDispositionFromToken(const nsAString& aDispToken)
{
// RFC 2183, section 2.8 says that an unknown disposition
// value should be treated as "attachment"
// If all of these tests eval to false, then we have a content-disposition of
// "attachment" or unknown
if (aDispToken.IsEmpty() ||
aDispToken.LowerCaseEqualsLiteral("inline") ||
// Broken sites just send
// Content-Disposition: filename="file"
// without a disposition token... screen those out.
StringHead(aDispToken, 8).LowerCaseEqualsLiteral("filename") ||
// Also in use is Content-Disposition: name="file"
StringHead(aDispToken, 4).LowerCaseEqualsLiteral("name"))
return nsIChannel::DISPOSITION_INLINE;
return nsIChannel::DISPOSITION_ATTACHMENT;
}
/** Determine the disposition (inline/attachment) of the content based on the
* Content-Disposition header
* @param aHeader the content-disposition header (full value)
* @param aChan the channel the header came from
*/
inline uint32_t
NS_GetContentDispositionFromHeader(const nsACString& aHeader, nsIChannel *aChan = nullptr)
{
nsresult rv;
nsCOMPtr<nsIMIMEHeaderParam> mimehdrpar = do_GetService(NS_MIMEHEADERPARAM_CONTRACTID, &rv);
if (NS_FAILED(rv))
return nsIChannel::DISPOSITION_ATTACHMENT;
nsAutoCString fallbackCharset;
if (aChan) {
nsCOMPtr<nsIURI> uri;
aChan->GetURI(getter_AddRefs(uri));
if (uri)
uri->GetOriginCharset(fallbackCharset);
}
nsAutoString dispToken;
rv = mimehdrpar->GetParameter(aHeader, "", fallbackCharset, true, nullptr,
dispToken);
if (NS_FAILED(rv)) {
// special case (see bug 272541): empty disposition type handled as "inline"
if (rv == NS_ERROR_FIRST_HEADER_FIELD_COMPONENT_EMPTY)
return nsIChannel::DISPOSITION_INLINE;
return nsIChannel::DISPOSITION_ATTACHMENT;
}
return NS_GetContentDispositionFromToken(dispToken);
}
/** Extracts the filename out of a content-disposition header
* @param aFilename [out] The filename. Can be empty on error.
* @param aDisposition Value of a Content-Disposition header
* @param aURI Optional. Will be used to get a fallback charset for the
* filename, if it is QI'able to nsIURL
*/
inline nsresult
NS_GetFilenameFromDisposition(nsAString& aFilename,
const nsACString& aDisposition,
nsIURI* aURI = nullptr)
{
aFilename.Truncate();
nsresult rv;
nsCOMPtr<nsIMIMEHeaderParam> mimehdrpar =
do_GetService(NS_MIMEHEADERPARAM_CONTRACTID, &rv);
if (NS_FAILED(rv))
return rv;
nsCOMPtr<nsIURL> url = do_QueryInterface(aURI);
nsAutoCString fallbackCharset;
if (url)
url->GetOriginCharset(fallbackCharset);
// Get the value of 'filename' parameter
rv = mimehdrpar->GetParameter(aDisposition, "filename",
fallbackCharset, true, nullptr,
aFilename);
if (NS_FAILED(rv) || aFilename.IsEmpty()) {
// Try 'name' parameter, instead.
rv = mimehdrpar->GetParameter(aDisposition, "name", fallbackCharset,
true, nullptr, aFilename);
}
if (NS_FAILED(rv)) {
aFilename.Truncate();
return rv;
}
if (aFilename.IsEmpty())
return NS_ERROR_NOT_AVAILABLE;
return NS_OK;
}
/**
* Make sure Personal Security Manager is initialized
*/
inline void
net_EnsurePSMInit()
{
nsCOMPtr<nsISocketProviderService> spserv =
do_GetService(NS_SOCKETPROVIDERSERVICE_CONTRACTID);
if (spserv) {
nsCOMPtr<nsISocketProvider> provider;
spserv->GetSocketProvider("ssl", getter_AddRefs(provider));
}
}
/**
* Test whether a URI is "about:blank". |uri| must not be null
*/
inline bool
NS_IsAboutBlank(nsIURI *uri)
{
// GetSpec can be expensive for some URIs, so check the scheme first.
bool isAbout = false;
if (NS_FAILED(uri->SchemeIs("about", &isAbout)) || !isAbout) {
return false;
}
nsAutoCString str;
uri->GetSpec(str);
return str.EqualsLiteral("about:blank");
}
inline nsresult
NS_GenerateHostPort(const nsCString& host, int32_t port,
nsCString& hostLine)
{
if (strchr(host.get(), ':')) {
// host is an IPv6 address literal and must be encapsulated in []'s
hostLine.Assign('[');
// scope id is not needed for Host header.
int scopeIdPos = host.FindChar('%');
if (scopeIdPos == -1)
hostLine.Append(host);
else if (scopeIdPos > 0)
hostLine.Append(Substring(host, 0, scopeIdPos));
else
return NS_ERROR_MALFORMED_URI;
hostLine.Append(']');
}
else
hostLine.Assign(host);
if (port != -1) {
hostLine.Append(':');
hostLine.AppendInt(port);
}
return NS_OK;
}
#endif // !nsNetUtil_h__
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