forked from mirrors/gecko-dev
5205854e55
Initially reported and discussed in Bug 610896.
The simple solution of just flipping the pref `network.proxy.socks_remote_dns`
is risky due to potentially breaking SOCKS4 proxy users. Proxying
DNS on SOCKS4 isn't supported. Therefore we speak the incompatible
SOCKS4a protocol when `socks_remote_dns` is enabled, potentially
breaking users setup.
To keep backwards compatibility on SOCKS4 proxy users, that don't have
SOCKS4a support, the pref `network.proxy.socks_remote_dns` is split into
two prefs:
* `network.proxy.socks_remote_dns`: remote DNS for SOCKS4
* `network.proxy.socks5_remote_dns`: remote DNS for SOCKS5.
This way we proxy DNS by default on SOCKS5 while keeping user settings
on SOCKS4. This is a similar approach to the one described in
[Bug 610896 comment 17].
Proxying DNS in SOCKS4 by default is desireable (See [Bug 610896 comment 11]),
but out of scope for this patch. [Telemetry] on proxy usage by socks
version indicated that changing the default for SOCKS4 is likely break
some users setup and needs to be taken with more care.
The default values of [proxyDNS] now defaults to true for SOCKS5 proxies.
When creating nsIProxyInfo objects of SOCKS4 proxies, the default value
false is kept. Setting proxyDNS affects both SOCKS4 and SOCKS5 proxy by
modifying both `socks_remote_dns` and `socks5_remote_dns`. Therefore no
extension breakage is expected.
The enterprise policy can also modify the new pref
`network.proxy.socks5_remote_dns`.
Follow up bugs filed while implementing:
* Bug 1890542 - Also disable Prefetch non-manual configurations of socks
proxy
* Bug 1890554 - Use `ProxyInfo::TRANSPARENT_PROXY_RESOLVES_HOST` flag in
`nsHttpChannel::GetProxyDNSStrategy`
* Bug 1890549 - nsHttpChannel implementation DNS resolve strategy for
proxies incomplete
* Bug 1893670 - Proxy DNS by default for SOCK4 proxies. Defaulting to
SOCKS4a
[Bug 610896 comment 17]: https://bugzilla.mozilla.org/show_bug.cgi?id=610896#c17
[Bug 610896 comment 11]: https://bugzilla.mozilla.org/show_bug.cgi?id=610896#c11
[Telemetry]: https://bugzilla.mozilla.org/show_bug.cgi?id=1741375#c27
[proxyDNS]: https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/proxy/settings#proxydns
Differential Revision: https://phabricator.services.mozilla.com/D207532
2500 lines
78 KiB
C++
2500 lines
78 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:set ts=4 sw=2 sts=2 et: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/ArrayUtils.h"
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#include "mozilla/Attributes.h"
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#include "mozilla/AutoRestore.h"
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#include "nsProtocolProxyService.h"
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#include "nsProxyInfo.h"
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#include "nsIClassInfoImpl.h"
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#include "nsIIOService.h"
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#include "nsIObserverService.h"
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#include "nsIProtocolHandler.h"
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#include "nsIProtocolProxyCallback.h"
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#include "nsIChannel.h"
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#include "nsICancelable.h"
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#include "nsDNSService2.h"
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#include "nsPIDNSService.h"
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#include "nsIPrefBranch.h"
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#include "nsIPrefService.h"
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#include "nsContentUtils.h"
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#include "nsCRT.h"
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#include "nsThreadUtils.h"
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#include "nsQueryObject.h"
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#include "nsSOCKSIOLayer.h"
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#include "nsString.h"
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#include "nsNetUtil.h"
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#include "nsNetCID.h"
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#include "prnetdb.h"
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#include "nsPACMan.h"
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#include "nsProxyRelease.h"
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#include "mozilla/Mutex.h"
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#include "mozilla/CondVar.h"
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#include "nsISystemProxySettings.h"
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#include "nsINetworkLinkService.h"
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#include "nsIHttpChannelInternal.h"
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#include "mozilla/dom/nsMixedContentBlocker.h"
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#include "mozilla/Logging.h"
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#include "mozilla/ScopeExit.h"
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#include "mozilla/StaticPrefs_network.h"
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#include "mozilla/Tokenizer.h"
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#include "mozilla/Unused.h"
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//----------------------------------------------------------------------------
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namespace mozilla {
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namespace net {
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extern const char kProxyType_HTTP[];
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extern const char kProxyType_HTTPS[];
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extern const char kProxyType_SOCKS[];
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extern const char kProxyType_SOCKS4[];
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extern const char kProxyType_SOCKS5[];
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extern const char kProxyType_DIRECT[];
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extern const char kProxyType_PROXY[];
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#undef LOG
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#define LOG(args) MOZ_LOG(gProxyLog, LogLevel::Debug, args)
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//----------------------------------------------------------------------------
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#define PROXY_PREF_BRANCH "network.proxy"
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#define PROXY_PREF(x) PROXY_PREF_BRANCH "." x
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//----------------------------------------------------------------------------
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// This structure is intended to be allocated on the stack
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struct nsProtocolInfo {
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nsAutoCString scheme;
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uint32_t flags = 0;
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int32_t defaultPort = 0;
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};
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//----------------------------------------------------------------------------
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// Return the channel's proxy URI, or if it doesn't exist, the
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// channel's main URI.
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static nsresult GetProxyURI(nsIChannel* channel, nsIURI** aOut) {
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nsresult rv = NS_OK;
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nsCOMPtr<nsIURI> proxyURI;
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nsCOMPtr<nsIHttpChannelInternal> httpChannel(do_QueryInterface(channel));
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if (httpChannel) {
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rv = httpChannel->GetProxyURI(getter_AddRefs(proxyURI));
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}
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if (!proxyURI) {
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rv = channel->GetURI(getter_AddRefs(proxyURI));
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}
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if (NS_FAILED(rv)) {
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return rv;
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}
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proxyURI.forget(aOut);
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return NS_OK;
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}
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//-----------------------------------------------------------------------------
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nsProtocolProxyService::FilterLink::FilterLink(uint32_t p,
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nsIProtocolProxyFilter* f)
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: position(p), filter(f), channelFilter(nullptr) {
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LOG(("nsProtocolProxyService::FilterLink::FilterLink %p, filter=%p", this,
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f));
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}
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nsProtocolProxyService::FilterLink::FilterLink(
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uint32_t p, nsIProtocolProxyChannelFilter* cf)
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: position(p), filter(nullptr), channelFilter(cf) {
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LOG(("nsProtocolProxyService::FilterLink::FilterLink %p, channel-filter=%p",
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this, cf));
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}
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nsProtocolProxyService::FilterLink::~FilterLink() {
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LOG(("nsProtocolProxyService::FilterLink::~FilterLink %p", this));
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}
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//-----------------------------------------------------------------------------
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// The nsPACManCallback portion of this implementation should be run
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// on the main thread - so call nsPACMan::AsyncGetProxyForURI() with
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// a true mainThreadResponse parameter.
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class nsAsyncResolveRequest final : public nsIRunnable,
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public nsPACManCallback,
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public nsICancelable {
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public:
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NS_DECL_THREADSAFE_ISUPPORTS
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nsAsyncResolveRequest(nsProtocolProxyService* pps, nsIChannel* channel,
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uint32_t aResolveFlags,
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nsIProtocolProxyCallback* callback)
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: mResolveFlags(aResolveFlags),
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mPPS(pps),
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mXPComPPS(pps),
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mChannel(channel),
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mCallback(callback) {
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NS_ASSERTION(mCallback, "null callback");
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}
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private:
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~nsAsyncResolveRequest() {
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if (!NS_IsMainThread()) {
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// these xpcom pointers might need to be proxied back to the
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// main thread to delete safely, but if this request had its
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// callbacks called normally they will all be null and this is a nop
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if (mChannel) {
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NS_ReleaseOnMainThread("nsAsyncResolveRequest::mChannel",
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mChannel.forget());
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}
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if (mCallback) {
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NS_ReleaseOnMainThread("nsAsyncResolveRequest::mCallback",
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mCallback.forget());
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}
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if (mProxyInfo) {
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NS_ReleaseOnMainThread("nsAsyncResolveRequest::mProxyInfo",
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mProxyInfo.forget());
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}
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if (mXPComPPS) {
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NS_ReleaseOnMainThread("nsAsyncResolveRequest::mXPComPPS",
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mXPComPPS.forget());
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}
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}
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}
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// Helper class to loop over all registered asynchronous filters.
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// There is a cycle between nsAsyncResolveRequest and this class that
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// is broken after the last filter has called back on this object.
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class AsyncApplyFilters final : public nsIProxyProtocolFilterResult,
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public nsIRunnable,
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public nsICancelable {
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// The reference counter is thread-safe, but the processing logic is
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// considered single thread only. We want the counter be thread safe,
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// since this class can be released on a background thread.
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NS_DECL_THREADSAFE_ISUPPORTS
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NS_DECL_NSIPROXYPROTOCOLFILTERRESULT
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NS_DECL_NSIRUNNABLE
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NS_DECL_NSICANCELABLE
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using Callback =
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std::function<nsresult(nsAsyncResolveRequest*, nsIProxyInfo*, bool)>;
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explicit AsyncApplyFilters(nsProtocolInfo& aInfo,
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Callback const& aCallback);
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// This method starts the processing or filters. If all of them
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// answer synchronously (call back from within applyFilters) this method
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// will return immediately and the returning result will carry return
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// result of the callback given in constructor.
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// This method is looping the registered filters (that have been copied
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// locally) as long as an answer from a filter is obtained synchronously.
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// Note that filters are processed serially to let them build a list
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// of proxy info.
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nsresult AsyncProcess(nsAsyncResolveRequest* aRequest);
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private:
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using FilterLink = nsProtocolProxyService::FilterLink;
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virtual ~AsyncApplyFilters();
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// Processes the next filter and loops until a filter is successfully
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// called on or it has called back to us.
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nsresult ProcessNextFilter();
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// Called after the last filter has been processed (=called back or failed
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// to be called on)
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nsresult Finish();
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nsProtocolInfo mInfo;
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// This is nullified before we call back on the request or when
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// Cancel() on this object has been called to break the cycle
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// and signal to stop.
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RefPtr<nsAsyncResolveRequest> mRequest;
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Callback mCallback;
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// A shallow snapshot of filters as they were registered at the moment
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// we started to process filters for the given resolve request.
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nsTArray<RefPtr<FilterLink>> mFiltersCopy;
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nsTArray<RefPtr<FilterLink>>::index_type mNextFilterIndex;
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// true when we are calling ProcessNextFilter() from inside AsyncProcess(),
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// false otherwise.
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bool mProcessingInLoop;
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// true after a filter called back to us with a result, dropped to false
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// just before we call a filter.
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bool mFilterCalledBack;
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// This keeps the initial value we pass to the first filter in line and also
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// collects the result from each filter call.
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nsCOMPtr<nsIProxyInfo> mProxyInfo;
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// The logic is written as non-thread safe, assert single-thread usage.
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nsCOMPtr<nsISerialEventTarget> mProcessingThread;
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};
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void EnsureResolveFlagsMatch() {
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nsCOMPtr<nsProxyInfo> pi = do_QueryInterface(mProxyInfo);
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if (!pi || pi->ResolveFlags() == mResolveFlags) {
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return;
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}
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nsCOMPtr<nsIProxyInfo> proxyInfo =
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pi->CloneProxyInfoWithNewResolveFlags(mResolveFlags);
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mProxyInfo.swap(proxyInfo);
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}
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public:
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nsresult ProcessLocally(nsProtocolInfo& info, nsIProxyInfo* pi,
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bool isSyncOK) {
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SetResult(NS_OK, pi);
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auto consumeFiltersResult = [isSyncOK](nsAsyncResolveRequest* ctx,
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nsIProxyInfo* pi,
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bool aCalledAsync) -> nsresult {
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ctx->SetResult(NS_OK, pi);
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if (isSyncOK || aCalledAsync) {
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ctx->Run();
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return NS_OK;
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}
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return ctx->DispatchCallback();
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};
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mAsyncFilterApplier = new AsyncApplyFilters(info, consumeFiltersResult);
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// may call consumeFiltersResult() directly
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return mAsyncFilterApplier->AsyncProcess(this);
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}
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void SetResult(nsresult status, nsIProxyInfo* pi) {
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mStatus = status;
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mProxyInfo = pi;
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}
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NS_IMETHOD Run() override {
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if (mCallback) DoCallback();
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return NS_OK;
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}
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NS_IMETHOD Cancel(nsresult reason) override {
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NS_ENSURE_ARG(NS_FAILED(reason));
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if (mAsyncFilterApplier) {
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mAsyncFilterApplier->Cancel(reason);
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}
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// If we've already called DoCallback then, nothing more to do.
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if (!mCallback) return NS_OK;
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SetResult(reason, nullptr);
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return DispatchCallback();
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}
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nsresult DispatchCallback() {
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if (mDispatched) { // Only need to dispatch once
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return NS_OK;
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}
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nsresult rv = NS_DispatchToCurrentThread(this);
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if (NS_FAILED(rv)) {
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NS_WARNING("unable to dispatch callback event");
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} else {
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mDispatched = true;
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return NS_OK;
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}
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mCallback = nullptr; // break possible reference cycle
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return rv;
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}
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private:
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// Called asynchronously, so we do not need to post another PLEvent
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// before calling DoCallback.
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void OnQueryComplete(nsresult status, const nsACString& pacString,
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const nsACString& newPACURL) override {
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// If we've already called DoCallback then, nothing more to do.
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if (!mCallback) return;
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// Provided we haven't been canceled...
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if (mStatus == NS_OK) {
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mStatus = status;
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mPACString = pacString;
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mPACURL = newPACURL;
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}
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// In the cancelation case, we may still have another PLEvent in
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// the queue that wants to call DoCallback. No need to wait for
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// it, just run the callback now.
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DoCallback();
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}
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void DoCallback() {
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bool pacAvailable = true;
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if (mStatus == NS_ERROR_NOT_AVAILABLE && !mProxyInfo) {
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// If the PAC service is not avail (e.g. failed pac load
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// or shutdown) then we will be going direct. Make that
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// mapping now so that any filters are still applied.
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mPACString = "DIRECT;"_ns;
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mStatus = NS_OK;
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LOG(("pac not available, use DIRECT\n"));
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pacAvailable = false;
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}
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// Generate proxy info from the PAC string if appropriate
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if (NS_SUCCEEDED(mStatus) && !mProxyInfo && !mPACString.IsEmpty()) {
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mPPS->ProcessPACString(mPACString, mResolveFlags,
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getter_AddRefs(mProxyInfo));
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nsCOMPtr<nsIURI> proxyURI;
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GetProxyURI(mChannel, getter_AddRefs(proxyURI));
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// Now apply proxy filters
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nsProtocolInfo info;
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mStatus = mPPS->GetProtocolInfo(proxyURI, &info);
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auto consumeFiltersResult = [pacAvailable](nsAsyncResolveRequest* self,
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nsIProxyInfo* pi,
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bool async) -> nsresult {
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LOG(("DoCallback::consumeFiltersResult this=%p, pi=%p, async=%d", self,
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pi, async));
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self->mProxyInfo = pi;
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if (pacAvailable) {
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// if !pacAvailable, it was already logged above
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LOG(("pac thread callback %s\n", self->mPACString.get()));
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}
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if (NS_SUCCEEDED(self->mStatus)) {
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self->mPPS->MaybeDisableDNSPrefetch(self->mProxyInfo);
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}
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self->EnsureResolveFlagsMatch();
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self->mCallback->OnProxyAvailable(self, self->mChannel,
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self->mProxyInfo, self->mStatus);
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return NS_OK;
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};
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if (NS_SUCCEEDED(mStatus)) {
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mAsyncFilterApplier = new AsyncApplyFilters(info, consumeFiltersResult);
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// This may call consumeFiltersResult() directly.
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mAsyncFilterApplier->AsyncProcess(this);
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return;
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}
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consumeFiltersResult(this, nullptr, false);
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} else if (NS_SUCCEEDED(mStatus) && !mPACURL.IsEmpty()) {
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LOG(("pac thread callback indicates new pac file load\n"));
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nsCOMPtr<nsIURI> proxyURI;
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GetProxyURI(mChannel, getter_AddRefs(proxyURI));
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// trigger load of new pac url
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nsresult rv = mPPS->ConfigureFromPAC(mPACURL, false);
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if (NS_SUCCEEDED(rv)) {
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// now that the load is triggered, we can resubmit the query
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RefPtr<nsAsyncResolveRequest> newRequest =
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new nsAsyncResolveRequest(mPPS, mChannel, mResolveFlags, mCallback);
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rv = mPPS->mPACMan->AsyncGetProxyForURI(proxyURI, newRequest,
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mResolveFlags, true);
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}
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if (NS_FAILED(rv)) {
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mCallback->OnProxyAvailable(this, mChannel, nullptr, rv);
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}
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// do not call onproxyavailable() in SUCCESS case - the newRequest will
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// take care of that
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} else {
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LOG(("pac thread callback did not provide information %" PRIX32 "\n",
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static_cast<uint32_t>(mStatus)));
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if (NS_SUCCEEDED(mStatus)) mPPS->MaybeDisableDNSPrefetch(mProxyInfo);
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EnsureResolveFlagsMatch();
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mCallback->OnProxyAvailable(this, mChannel, mProxyInfo, mStatus);
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}
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// We are on the main thread now and don't need these any more so
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// release them to avoid having to proxy them back to the main thread
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// in the dtor
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mCallback = nullptr; // in case the callback holds an owning ref to us
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mPPS = nullptr;
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mXPComPPS = nullptr;
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mChannel = nullptr;
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mProxyInfo = nullptr;
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}
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private:
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nsresult mStatus{NS_OK};
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nsCString mPACString;
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nsCString mPACURL;
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bool mDispatched{false};
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uint32_t mResolveFlags;
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nsProtocolProxyService* mPPS;
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nsCOMPtr<nsIProtocolProxyService> mXPComPPS;
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nsCOMPtr<nsIChannel> mChannel;
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nsCOMPtr<nsIProtocolProxyCallback> mCallback;
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nsCOMPtr<nsIProxyInfo> mProxyInfo;
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RefPtr<AsyncApplyFilters> mAsyncFilterApplier;
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};
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NS_IMPL_ISUPPORTS(nsAsyncResolveRequest, nsICancelable, nsIRunnable)
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NS_IMPL_ISUPPORTS(nsAsyncResolveRequest::AsyncApplyFilters,
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nsIProxyProtocolFilterResult, nsICancelable, nsIRunnable)
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nsAsyncResolveRequest::AsyncApplyFilters::AsyncApplyFilters(
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nsProtocolInfo& aInfo, Callback const& aCallback)
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: mInfo(aInfo),
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mCallback(aCallback),
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mNextFilterIndex(0),
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mProcessingInLoop(false),
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mFilterCalledBack(false) {
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LOG(("AsyncApplyFilters %p", this));
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}
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nsAsyncResolveRequest::AsyncApplyFilters::~AsyncApplyFilters() {
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LOG(("~AsyncApplyFilters %p", this));
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MOZ_ASSERT(!mRequest);
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MOZ_ASSERT(!mProxyInfo);
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MOZ_ASSERT(!mFiltersCopy.Length());
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}
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|
|
nsresult nsAsyncResolveRequest::AsyncApplyFilters::AsyncProcess(
|
|
nsAsyncResolveRequest* aRequest) {
|
|
LOG(("AsyncApplyFilters::AsyncProcess %p for req %p", this, aRequest));
|
|
|
|
MOZ_ASSERT(!mRequest, "AsyncApplyFilters started more than once!");
|
|
|
|
if (!(mInfo.flags & nsIProtocolHandler::ALLOWS_PROXY)) {
|
|
// Calling the callback directly (not via Finish()) since we
|
|
// don't want to prune.
|
|
return mCallback(aRequest, aRequest->mProxyInfo, false);
|
|
}
|
|
|
|
mProcessingThread = NS_GetCurrentThread();
|
|
|
|
mRequest = aRequest;
|
|
mProxyInfo = aRequest->mProxyInfo;
|
|
|
|
aRequest->mPPS->CopyFilters(mFiltersCopy);
|
|
|
|
// We want to give filters a chance to process in a single loop to prevent
|
|
// any current-thread dispatch delays when those are not needed.
|
|
// This code is rather "loopy" than "recursive" to prevent long stack traces.
|
|
do {
|
|
MOZ_ASSERT(!mProcessingInLoop);
|
|
|
|
mozilla::AutoRestore<bool> restore(mProcessingInLoop);
|
|
mProcessingInLoop = true;
|
|
|
|
nsresult rv = ProcessNextFilter();
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
} while (mFilterCalledBack);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult nsAsyncResolveRequest::AsyncApplyFilters::ProcessNextFilter() {
|
|
LOG(("AsyncApplyFilters::ProcessNextFilter %p ENTER pi=%p", this,
|
|
mProxyInfo.get()));
|
|
|
|
RefPtr<FilterLink> filter;
|
|
do {
|
|
mFilterCalledBack = false;
|
|
|
|
if (!mRequest) {
|
|
// We got canceled
|
|
LOG((" canceled"));
|
|
return NS_OK; // should we let the consumer know?
|
|
}
|
|
|
|
if (mNextFilterIndex == mFiltersCopy.Length()) {
|
|
return Finish();
|
|
}
|
|
|
|
filter = mFiltersCopy[mNextFilterIndex++];
|
|
|
|
// Loop until a call to a filter succeeded. Other option is to recurse
|
|
// but that would waste stack trace when a number of filters gets registered
|
|
// and all from some reason tend to fail.
|
|
// The !mFilterCalledBack part of the condition is there to protect us from
|
|
// calling on another filter when the current one managed to call back and
|
|
// then threw. We already have the result so take it and use it since
|
|
// the next filter will be processed by the root loop or a call to
|
|
// ProcessNextFilter has already been dispatched to this thread.
|
|
LOG((" calling filter %p pi=%p", filter.get(), mProxyInfo.get()));
|
|
} while (!mRequest->mPPS->ApplyFilter(filter, mRequest->mChannel, mInfo,
|
|
mProxyInfo, this) &&
|
|
!mFilterCalledBack);
|
|
|
|
LOG(("AsyncApplyFilters::ProcessNextFilter %p LEAVE pi=%p", this,
|
|
mProxyInfo.get()));
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsAsyncResolveRequest::AsyncApplyFilters::OnProxyFilterResult(
|
|
nsIProxyInfo* aProxyInfo) {
|
|
LOG(("AsyncApplyFilters::OnProxyFilterResult %p pi=%p", this, aProxyInfo));
|
|
|
|
MOZ_ASSERT(mProcessingThread && mProcessingThread->IsOnCurrentThread());
|
|
MOZ_ASSERT(!mFilterCalledBack);
|
|
|
|
if (mFilterCalledBack) {
|
|
LOG((" duplicate notification?"));
|
|
return NS_OK;
|
|
}
|
|
|
|
mFilterCalledBack = true;
|
|
|
|
if (!mRequest) {
|
|
// We got canceled
|
|
LOG((" canceled"));
|
|
return NS_OK;
|
|
}
|
|
|
|
mProxyInfo = aProxyInfo;
|
|
|
|
if (mProcessingInLoop) {
|
|
// No need to call/dispatch ProcessNextFilter(), we are in a control
|
|
// loop that will do this for us and save recursion/dispatching.
|
|
LOG((" in a root loop"));
|
|
return NS_OK;
|
|
}
|
|
|
|
if (mNextFilterIndex == mFiltersCopy.Length()) {
|
|
// We are done, all filters have been called on!
|
|
Finish();
|
|
return NS_OK;
|
|
}
|
|
|
|
// Redispatch, since we don't want long stacks when filters respond
|
|
// synchronously.
|
|
LOG((" redispatching"));
|
|
NS_DispatchToCurrentThread(this);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsAsyncResolveRequest::AsyncApplyFilters::Run() {
|
|
LOG(("AsyncApplyFilters::Run %p", this));
|
|
|
|
MOZ_ASSERT(mProcessingThread && mProcessingThread->IsOnCurrentThread());
|
|
|
|
ProcessNextFilter();
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult nsAsyncResolveRequest::AsyncApplyFilters::Finish() {
|
|
LOG(("AsyncApplyFilters::Finish %p pi=%p", this, mProxyInfo.get()));
|
|
|
|
MOZ_ASSERT(mRequest);
|
|
|
|
mFiltersCopy.Clear();
|
|
|
|
RefPtr<nsAsyncResolveRequest> request;
|
|
request.swap(mRequest);
|
|
|
|
nsCOMPtr<nsIProxyInfo> pi;
|
|
pi.swap(mProxyInfo);
|
|
|
|
request->mPPS->PruneProxyInfo(mInfo, pi);
|
|
return mCallback(request, pi, !mProcessingInLoop);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsAsyncResolveRequest::AsyncApplyFilters::Cancel(nsresult reason) {
|
|
LOG(("AsyncApplyFilters::Cancel %p", this));
|
|
|
|
MOZ_ASSERT(mProcessingThread && mProcessingThread->IsOnCurrentThread());
|
|
|
|
// This will be called only from inside the request, so don't call
|
|
// its's callback. Dropping the members means we simply break the cycle.
|
|
mFiltersCopy.Clear();
|
|
mProxyInfo = nullptr;
|
|
mRequest = nullptr;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// Bug 1366133: make GetPACURI and GetSystemWPADSetting off-main-thread since it
|
|
// may hang on Windows platform
|
|
class AsyncGetPACURIRequestOrSystemWPADSetting final : public nsIRunnable {
|
|
public:
|
|
NS_DECL_THREADSAFE_ISUPPORTS
|
|
|
|
using CallbackFunc = nsresult (nsProtocolProxyService::*)(bool, bool,
|
|
nsresult,
|
|
const nsACString&,
|
|
bool);
|
|
|
|
AsyncGetPACURIRequestOrSystemWPADSetting(
|
|
nsProtocolProxyService* aService, CallbackFunc aCallback,
|
|
nsISystemProxySettings* aSystemProxySettings, bool aMainThreadOnly,
|
|
bool aForceReload, bool aResetPACThread, bool aSystemWPADAllowed)
|
|
: mIsMainThreadOnly(aMainThreadOnly),
|
|
mService(aService),
|
|
mServiceHolder(do_QueryObject(aService)),
|
|
mCallback(aCallback),
|
|
mSystemProxySettings(aSystemProxySettings),
|
|
mForceReload(aForceReload),
|
|
mResetPACThread(aResetPACThread),
|
|
mSystemWPADAllowed(aSystemWPADAllowed) {
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
Unused << mIsMainThreadOnly;
|
|
}
|
|
|
|
NS_IMETHOD Run() override {
|
|
MOZ_ASSERT(NS_IsMainThread() == mIsMainThreadOnly);
|
|
|
|
nsresult rv;
|
|
nsCString pacUri;
|
|
bool systemWPADSetting = false;
|
|
if (mSystemWPADAllowed) {
|
|
mSystemProxySettings->GetSystemWPADSetting(&systemWPADSetting);
|
|
}
|
|
|
|
rv = mSystemProxySettings->GetPACURI(pacUri);
|
|
|
|
nsCOMPtr<nsIRunnable> event =
|
|
NewNonOwningCancelableRunnableMethod<bool, bool, nsresult, nsCString,
|
|
bool>(
|
|
"AsyncGetPACURIRequestOrSystemWPADSettingCallback", mService,
|
|
mCallback, mForceReload, mResetPACThread, rv, pacUri,
|
|
systemWPADSetting);
|
|
|
|
return NS_DispatchToMainThread(event);
|
|
}
|
|
|
|
private:
|
|
~AsyncGetPACURIRequestOrSystemWPADSetting() {
|
|
NS_ReleaseOnMainThread(
|
|
"AsyncGetPACURIRequestOrSystemWPADSetting::mServiceHolder",
|
|
mServiceHolder.forget());
|
|
}
|
|
|
|
bool mIsMainThreadOnly;
|
|
|
|
nsProtocolProxyService* mService; // ref-count is hold by mServiceHolder
|
|
nsCOMPtr<nsIProtocolProxyService2> mServiceHolder;
|
|
CallbackFunc mCallback;
|
|
nsCOMPtr<nsISystemProxySettings> mSystemProxySettings;
|
|
|
|
bool mForceReload;
|
|
bool mResetPACThread;
|
|
bool mSystemWPADAllowed;
|
|
};
|
|
|
|
NS_IMPL_ISUPPORTS(AsyncGetPACURIRequestOrSystemWPADSetting, nsIRunnable)
|
|
|
|
//----------------------------------------------------------------------------
|
|
|
|
//
|
|
// apply mask to address (zeros out excluded bits).
|
|
//
|
|
// NOTE: we do the byte swapping here to minimize overall swapping.
|
|
//
|
|
static void proxy_MaskIPv6Addr(PRIPv6Addr& addr, uint16_t mask_len) {
|
|
if (mask_len == 128) return;
|
|
|
|
if (mask_len > 96) {
|
|
addr.pr_s6_addr32[3] =
|
|
PR_htonl(PR_ntohl(addr.pr_s6_addr32[3]) & (~0uL << (128 - mask_len)));
|
|
} else if (mask_len > 64) {
|
|
addr.pr_s6_addr32[3] = 0;
|
|
addr.pr_s6_addr32[2] =
|
|
PR_htonl(PR_ntohl(addr.pr_s6_addr32[2]) & (~0uL << (96 - mask_len)));
|
|
} else if (mask_len > 32) {
|
|
addr.pr_s6_addr32[3] = 0;
|
|
addr.pr_s6_addr32[2] = 0;
|
|
addr.pr_s6_addr32[1] =
|
|
PR_htonl(PR_ntohl(addr.pr_s6_addr32[1]) & (~0uL << (64 - mask_len)));
|
|
} else {
|
|
addr.pr_s6_addr32[3] = 0;
|
|
addr.pr_s6_addr32[2] = 0;
|
|
addr.pr_s6_addr32[1] = 0;
|
|
addr.pr_s6_addr32[0] =
|
|
PR_htonl(PR_ntohl(addr.pr_s6_addr32[0]) & (~0uL << (32 - mask_len)));
|
|
}
|
|
}
|
|
|
|
static void proxy_GetStringPref(nsIPrefBranch* aPrefBranch, const char* aPref,
|
|
nsCString& aResult) {
|
|
nsAutoCString temp;
|
|
nsresult rv = aPrefBranch->GetCharPref(aPref, temp);
|
|
if (NS_FAILED(rv)) {
|
|
aResult.Truncate();
|
|
} else {
|
|
aResult.Assign(temp);
|
|
// all of our string prefs are hostnames, so we should remove any
|
|
// whitespace characters that the user might have unknowingly entered.
|
|
aResult.StripWhitespace();
|
|
}
|
|
}
|
|
|
|
static void proxy_GetIntPref(nsIPrefBranch* aPrefBranch, const char* aPref,
|
|
int32_t& aResult) {
|
|
int32_t temp;
|
|
nsresult rv = aPrefBranch->GetIntPref(aPref, &temp);
|
|
if (NS_FAILED(rv)) {
|
|
aResult = -1;
|
|
} else {
|
|
aResult = temp;
|
|
}
|
|
}
|
|
|
|
static void proxy_GetBoolPref(nsIPrefBranch* aPrefBranch, const char* aPref,
|
|
bool& aResult) {
|
|
bool temp;
|
|
nsresult rv = aPrefBranch->GetBoolPref(aPref, &temp);
|
|
if (NS_FAILED(rv)) {
|
|
aResult = false;
|
|
} else {
|
|
aResult = temp;
|
|
}
|
|
}
|
|
|
|
//----------------------------------------------------------------------------
|
|
|
|
static const int32_t PROXYCONFIG_DIRECT4X = 3;
|
|
static const int32_t PROXYCONFIG_COUNT = 6;
|
|
|
|
NS_IMPL_ADDREF(nsProtocolProxyService)
|
|
NS_IMPL_RELEASE(nsProtocolProxyService)
|
|
NS_IMPL_CLASSINFO(nsProtocolProxyService, nullptr, nsIClassInfo::SINGLETON,
|
|
NS_PROTOCOLPROXYSERVICE_CID)
|
|
|
|
// NS_IMPL_QUERY_INTERFACE_CI with the nsProtocolProxyService QI change
|
|
NS_INTERFACE_MAP_BEGIN(nsProtocolProxyService)
|
|
NS_INTERFACE_MAP_ENTRY(nsIProtocolProxyService)
|
|
NS_INTERFACE_MAP_ENTRY(nsIProtocolProxyService2)
|
|
NS_INTERFACE_MAP_ENTRY(nsIObserver)
|
|
NS_INTERFACE_MAP_ENTRY(nsITimerCallback)
|
|
NS_INTERFACE_MAP_ENTRY(nsINamed)
|
|
NS_INTERFACE_MAP_ENTRY_CONCRETE(nsProtocolProxyService)
|
|
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIProtocolProxyService)
|
|
NS_IMPL_QUERY_CLASSINFO(nsProtocolProxyService)
|
|
NS_INTERFACE_MAP_END
|
|
|
|
NS_IMPL_CI_INTERFACE_GETTER(nsProtocolProxyService, nsIProtocolProxyService,
|
|
nsIProtocolProxyService2)
|
|
|
|
nsProtocolProxyService::nsProtocolProxyService() : mSessionStart(PR_Now()) {}
|
|
|
|
nsProtocolProxyService::~nsProtocolProxyService() {
|
|
// These should have been cleaned up in our Observe method.
|
|
NS_ASSERTION(mHostFiltersArray.Length() == 0 && mFilters.Length() == 0 &&
|
|
mPACMan == nullptr,
|
|
"what happened to xpcom-shutdown?");
|
|
}
|
|
|
|
// nsProtocolProxyService methods
|
|
nsresult nsProtocolProxyService::Init() {
|
|
// failure to access prefs is non-fatal
|
|
nsCOMPtr<nsIPrefBranch> prefBranch = do_GetService(NS_PREFSERVICE_CONTRACTID);
|
|
if (prefBranch) {
|
|
// monitor proxy prefs
|
|
prefBranch->AddObserver(PROXY_PREF_BRANCH, this, false);
|
|
|
|
// read all prefs
|
|
PrefsChanged(prefBranch, nullptr);
|
|
}
|
|
|
|
nsCOMPtr<nsIObserverService> obs = services::GetObserverService();
|
|
if (obs) {
|
|
// register for shutdown notification so we can clean ourselves up
|
|
// properly.
|
|
obs->AddObserver(this, NS_XPCOM_SHUTDOWN_OBSERVER_ID, false);
|
|
obs->AddObserver(this, NS_NETWORK_LINK_TOPIC, false);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// ReloadNetworkPAC() checks if there's a non-networked PAC in use then avoids
|
|
// to call ReloadPAC()
|
|
nsresult nsProtocolProxyService::ReloadNetworkPAC() {
|
|
nsCOMPtr<nsIPrefBranch> prefs = do_GetService(NS_PREFSERVICE_CONTRACTID);
|
|
if (!prefs) {
|
|
return NS_OK;
|
|
}
|
|
|
|
int32_t type;
|
|
nsresult rv = prefs->GetIntPref(PROXY_PREF("type"), &type);
|
|
if (NS_FAILED(rv)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
if (type == PROXYCONFIG_PAC) {
|
|
nsAutoCString pacSpec;
|
|
prefs->GetCharPref(PROXY_PREF("autoconfig_url"), pacSpec);
|
|
if (!pacSpec.IsEmpty()) {
|
|
nsCOMPtr<nsIURI> pacURI;
|
|
rv = NS_NewURI(getter_AddRefs(pacURI), pacSpec);
|
|
if (!NS_SUCCEEDED(rv)) {
|
|
return rv;
|
|
}
|
|
|
|
nsProtocolInfo pac;
|
|
rv = GetProtocolInfo(pacURI, &pac);
|
|
if (!NS_SUCCEEDED(rv)) {
|
|
return rv;
|
|
}
|
|
|
|
if (!pac.scheme.EqualsLiteral("file") &&
|
|
!pac.scheme.EqualsLiteral("data")) {
|
|
LOG((": received network changed event, reload PAC"));
|
|
ReloadPAC();
|
|
}
|
|
}
|
|
} else if ((type == PROXYCONFIG_WPAD) || (type == PROXYCONFIG_SYSTEM)) {
|
|
ReloadPAC();
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult nsProtocolProxyService::AsyncConfigureWPADOrFromPAC(
|
|
bool aForceReload, bool aResetPACThread, bool aSystemWPADAllowed) {
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
|
|
bool mainThreadOnly;
|
|
nsresult rv = mSystemProxySettings->GetMainThreadOnly(&mainThreadOnly);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
|
|
nsCOMPtr<nsIRunnable> req = new AsyncGetPACURIRequestOrSystemWPADSetting(
|
|
this, &nsProtocolProxyService::OnAsyncGetPACURIOrSystemWPADSetting,
|
|
mSystemProxySettings, mainThreadOnly, aForceReload, aResetPACThread,
|
|
aSystemWPADAllowed);
|
|
|
|
if (mainThreadOnly) {
|
|
return req->Run();
|
|
}
|
|
|
|
return NS_DispatchBackgroundTask(req.forget(),
|
|
nsIEventTarget::DISPATCH_NORMAL);
|
|
}
|
|
|
|
nsresult nsProtocolProxyService::OnAsyncGetPACURIOrSystemWPADSetting(
|
|
bool aForceReload, bool aResetPACThread, nsresult aResult,
|
|
const nsACString& aUri, bool aSystemWPADSetting) {
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
|
|
if (aResetPACThread) {
|
|
ResetPACThread();
|
|
}
|
|
|
|
if (aSystemWPADSetting) {
|
|
if (mSystemProxySettings || !mPACMan) {
|
|
mSystemProxySettings = nullptr;
|
|
ResetPACThread();
|
|
}
|
|
|
|
nsAutoCString tempString;
|
|
ConfigureFromPAC(EmptyCString(), false);
|
|
} else if (NS_SUCCEEDED(aResult) && !aUri.IsEmpty()) {
|
|
ConfigureFromPAC(PromiseFlatCString(aUri), aForceReload);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsProtocolProxyService::Observe(nsISupports* aSubject, const char* aTopic,
|
|
const char16_t* aData) {
|
|
if (strcmp(aTopic, NS_XPCOM_SHUTDOWN_OBSERVER_ID) == 0) {
|
|
mIsShutdown = true;
|
|
// cleanup
|
|
mHostFiltersArray.Clear();
|
|
mFilters.Clear();
|
|
|
|
if (mPACMan) {
|
|
mPACMan->Shutdown();
|
|
mPACMan = nullptr;
|
|
}
|
|
|
|
if (mReloadPACTimer) {
|
|
mReloadPACTimer->Cancel();
|
|
mReloadPACTimer = nullptr;
|
|
}
|
|
|
|
nsCOMPtr<nsIObserverService> obs = services::GetObserverService();
|
|
if (obs) {
|
|
obs->RemoveObserver(this, NS_NETWORK_LINK_TOPIC);
|
|
obs->RemoveObserver(this, NS_XPCOM_SHUTDOWN_OBSERVER_ID);
|
|
}
|
|
|
|
} else if (strcmp(aTopic, NS_NETWORK_LINK_TOPIC) == 0) {
|
|
nsCString converted = NS_ConvertUTF16toUTF8(aData);
|
|
const char* state = converted.get();
|
|
if (!strcmp(state, NS_NETWORK_LINK_DATA_CHANGED)) {
|
|
uint32_t delay = StaticPrefs::network_proxy_reload_pac_delay();
|
|
LOG(("nsProtocolProxyService::Observe call ReloadNetworkPAC() delay=%u",
|
|
delay));
|
|
|
|
if (delay) {
|
|
if (mReloadPACTimer) {
|
|
mReloadPACTimer->Cancel();
|
|
mReloadPACTimer = nullptr;
|
|
}
|
|
NS_NewTimerWithCallback(getter_AddRefs(mReloadPACTimer), this, delay,
|
|
nsITimer::TYPE_ONE_SHOT);
|
|
} else {
|
|
ReloadNetworkPAC();
|
|
}
|
|
}
|
|
} else {
|
|
NS_ASSERTION(strcmp(aTopic, NS_PREFBRANCH_PREFCHANGE_TOPIC_ID) == 0,
|
|
"what is this random observer event?");
|
|
nsCOMPtr<nsIPrefBranch> prefs = do_QueryInterface(aSubject);
|
|
if (prefs) PrefsChanged(prefs, NS_LossyConvertUTF16toASCII(aData).get());
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsProtocolProxyService::Notify(nsITimer* aTimer) {
|
|
MOZ_ASSERT(aTimer == mReloadPACTimer);
|
|
ReloadNetworkPAC();
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsProtocolProxyService::GetName(nsACString& aName) {
|
|
aName.AssignLiteral("nsProtocolProxyService");
|
|
return NS_OK;
|
|
}
|
|
|
|
void nsProtocolProxyService::PrefsChanged(nsIPrefBranch* prefBranch,
|
|
const char* pref) {
|
|
nsresult rv = NS_OK;
|
|
bool reloadPAC = false;
|
|
nsAutoCString tempString;
|
|
auto invokeCallback =
|
|
MakeScopeExit([&] { NotifyProxyConfigChangedInternal(); });
|
|
|
|
if (!pref || !strcmp(pref, PROXY_PREF("type")) ||
|
|
!strcmp(pref, PROXY_PREF("system_wpad"))) {
|
|
int32_t type = -1;
|
|
rv = prefBranch->GetIntPref(PROXY_PREF("type"), &type);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
// bug 115720 - for ns4.x backwards compatibility
|
|
if (type == PROXYCONFIG_DIRECT4X) {
|
|
type = PROXYCONFIG_DIRECT;
|
|
// Reset the type so that the dialog looks correct, and we
|
|
// don't have to handle this case everywhere else
|
|
// I'm paranoid about a loop of some sort - only do this
|
|
// if we're enumerating all prefs, and ignore any error
|
|
if (!pref) prefBranch->SetIntPref(PROXY_PREF("type"), type);
|
|
} else if (type >= PROXYCONFIG_COUNT) {
|
|
LOG(("unknown proxy type: %" PRId32 "; assuming direct\n", type));
|
|
type = PROXYCONFIG_DIRECT;
|
|
}
|
|
mProxyConfig = type;
|
|
reloadPAC = true;
|
|
}
|
|
|
|
if (mProxyConfig == PROXYCONFIG_SYSTEM) {
|
|
mSystemProxySettings = do_GetService(NS_SYSTEMPROXYSETTINGS_CONTRACTID);
|
|
if (!mSystemProxySettings) mProxyConfig = PROXYCONFIG_DIRECT;
|
|
ResetPACThread();
|
|
} else {
|
|
if (mSystemProxySettings) {
|
|
mSystemProxySettings = nullptr;
|
|
ResetPACThread();
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!pref || !strcmp(pref, PROXY_PREF("http"))) {
|
|
proxy_GetStringPref(prefBranch, PROXY_PREF("http"), mHTTPProxyHost);
|
|
}
|
|
|
|
if (!pref || !strcmp(pref, PROXY_PREF("http_port"))) {
|
|
proxy_GetIntPref(prefBranch, PROXY_PREF("http_port"), mHTTPProxyPort);
|
|
}
|
|
|
|
if (!pref || !strcmp(pref, PROXY_PREF("ssl"))) {
|
|
proxy_GetStringPref(prefBranch, PROXY_PREF("ssl"), mHTTPSProxyHost);
|
|
}
|
|
|
|
if (!pref || !strcmp(pref, PROXY_PREF("ssl_port"))) {
|
|
proxy_GetIntPref(prefBranch, PROXY_PREF("ssl_port"), mHTTPSProxyPort);
|
|
}
|
|
|
|
if (!pref || !strcmp(pref, PROXY_PREF("socks"))) {
|
|
proxy_GetStringPref(prefBranch, PROXY_PREF("socks"), mSOCKSProxyTarget);
|
|
}
|
|
|
|
if (!pref || !strcmp(pref, PROXY_PREF("socks_port"))) {
|
|
proxy_GetIntPref(prefBranch, PROXY_PREF("socks_port"), mSOCKSProxyPort);
|
|
}
|
|
|
|
if (!pref || !strcmp(pref, PROXY_PREF("socks_version"))) {
|
|
int32_t version;
|
|
proxy_GetIntPref(prefBranch, PROXY_PREF("socks_version"), version);
|
|
// make sure this preference value remains sane
|
|
if (version == nsIProxyInfo::SOCKS_V5) {
|
|
mSOCKSProxyVersion = nsIProxyInfo::SOCKS_V5;
|
|
} else {
|
|
mSOCKSProxyVersion = nsIProxyInfo::SOCKS_V4;
|
|
}
|
|
}
|
|
|
|
if (!pref || !strcmp(pref, PROXY_PREF("socks_remote_dns"))) {
|
|
proxy_GetBoolPref(prefBranch, PROXY_PREF("socks_remote_dns"),
|
|
mSOCKS4ProxyRemoteDNS);
|
|
}
|
|
|
|
if (!pref || !strcmp(pref, PROXY_PREF("socks5_remote_dns"))) {
|
|
proxy_GetBoolPref(prefBranch, PROXY_PREF("socks5_remote_dns"),
|
|
mSOCKS5ProxyRemoteDNS);
|
|
}
|
|
|
|
if (!pref || !strcmp(pref, PROXY_PREF("proxy_over_tls"))) {
|
|
proxy_GetBoolPref(prefBranch, PROXY_PREF("proxy_over_tls"), mProxyOverTLS);
|
|
}
|
|
|
|
if (!pref || !strcmp(pref, PROXY_PREF("enable_wpad_over_dhcp"))) {
|
|
proxy_GetBoolPref(prefBranch, PROXY_PREF("enable_wpad_over_dhcp"),
|
|
mWPADOverDHCPEnabled);
|
|
reloadPAC = reloadPAC || mProxyConfig == PROXYCONFIG_WPAD;
|
|
}
|
|
|
|
if (!pref || !strcmp(pref, PROXY_PREF("failover_timeout"))) {
|
|
proxy_GetIntPref(prefBranch, PROXY_PREF("failover_timeout"),
|
|
mFailedProxyTimeout);
|
|
}
|
|
|
|
if (!pref || !strcmp(pref, PROXY_PREF("no_proxies_on"))) {
|
|
rv = prefBranch->GetCharPref(PROXY_PREF("no_proxies_on"), tempString);
|
|
if (NS_SUCCEEDED(rv)) LoadHostFilters(tempString);
|
|
}
|
|
|
|
// We're done if not using something that could give us a PAC URL
|
|
// (PAC, WPAD or System)
|
|
if (mProxyConfig != PROXYCONFIG_PAC && mProxyConfig != PROXYCONFIG_WPAD &&
|
|
mProxyConfig != PROXYCONFIG_SYSTEM) {
|
|
return;
|
|
}
|
|
|
|
// OK, we need to reload the PAC file if:
|
|
// 1) network.proxy.type changed, or
|
|
// 2) network.proxy.autoconfig_url changed and PAC is configured
|
|
|
|
if (!pref || !strcmp(pref, PROXY_PREF("autoconfig_url"))) reloadPAC = true;
|
|
|
|
if (reloadPAC) {
|
|
tempString.Truncate();
|
|
if (mProxyConfig == PROXYCONFIG_PAC) {
|
|
prefBranch->GetCharPref(PROXY_PREF("autoconfig_url"), tempString);
|
|
if (mPACMan && !mPACMan->IsPACURI(tempString)) {
|
|
LOG(("PAC Thread URI Changed - Reset Pac Thread"));
|
|
ResetPACThread();
|
|
}
|
|
} else if (mProxyConfig == PROXYCONFIG_WPAD) {
|
|
LOG(("Auto-detecting proxy - Reset Pac Thread"));
|
|
ResetPACThread();
|
|
} else if (mSystemProxySettings && mProxyConfig == PROXYCONFIG_SYSTEM &&
|
|
StaticPrefs::network_proxy_system_wpad()) {
|
|
AsyncConfigureWPADOrFromPAC(false, false, true);
|
|
} else if (mSystemProxySettings) {
|
|
// Get System Proxy settings if available
|
|
AsyncConfigureWPADOrFromPAC(false, false, false);
|
|
}
|
|
if (!tempString.IsEmpty() || mProxyConfig == PROXYCONFIG_WPAD) {
|
|
ConfigureFromPAC(tempString, false);
|
|
}
|
|
}
|
|
}
|
|
|
|
bool nsProtocolProxyService::CanUseProxy(nsIURI* aURI, int32_t defaultPort) {
|
|
int32_t port;
|
|
nsAutoCString host;
|
|
|
|
nsresult rv = aURI->GetAsciiHost(host);
|
|
if (NS_FAILED(rv) || host.IsEmpty()) return false;
|
|
|
|
rv = aURI->GetPort(&port);
|
|
if (NS_FAILED(rv)) return false;
|
|
if (port == -1) port = defaultPort;
|
|
|
|
PRNetAddr addr;
|
|
bool is_ipaddr = (PR_StringToNetAddr(host.get(), &addr) == PR_SUCCESS);
|
|
|
|
PRIPv6Addr ipv6;
|
|
if (is_ipaddr) {
|
|
// convert parsed address to IPv6
|
|
if (addr.raw.family == PR_AF_INET) {
|
|
// convert to IPv4-mapped address
|
|
PR_ConvertIPv4AddrToIPv6(addr.inet.ip, &ipv6);
|
|
} else if (addr.raw.family == PR_AF_INET6) {
|
|
// copy the address
|
|
memcpy(&ipv6, &addr.ipv6.ip, sizeof(PRIPv6Addr));
|
|
} else {
|
|
NS_WARNING("unknown address family");
|
|
return true; // allow proxying
|
|
}
|
|
}
|
|
|
|
// Don't use proxy for local hosts (plain hostname, no dots)
|
|
if ((!is_ipaddr && mFilterLocalHosts && !host.Contains('.')) ||
|
|
// This method detects if we have network.proxy.allow_hijacking_localhost
|
|
// pref enabled. If it's true then this method will always return false
|
|
// otherwise it returns true if the host matches an address that's
|
|
// hardcoded to the loopback address.
|
|
(!StaticPrefs::network_proxy_allow_hijacking_localhost() &&
|
|
nsMixedContentBlocker::IsPotentiallyTrustworthyLoopbackHost(host))) {
|
|
LOG(("Not using proxy for this local host [%s]!\n", host.get()));
|
|
return false; // don't allow proxying
|
|
}
|
|
|
|
int32_t index = -1;
|
|
while (++index < int32_t(mHostFiltersArray.Length())) {
|
|
const auto& hinfo = mHostFiltersArray[index];
|
|
|
|
if (is_ipaddr != hinfo->is_ipaddr) continue;
|
|
if (hinfo->port && hinfo->port != port) continue;
|
|
|
|
if (is_ipaddr) {
|
|
// generate masked version of target IPv6 address
|
|
PRIPv6Addr masked;
|
|
memcpy(&masked, &ipv6, sizeof(PRIPv6Addr));
|
|
proxy_MaskIPv6Addr(masked, hinfo->ip.mask_len);
|
|
|
|
// check for a match
|
|
if (memcmp(&masked, &hinfo->ip.addr, sizeof(PRIPv6Addr)) == 0) {
|
|
return false; // proxy disallowed
|
|
}
|
|
} else {
|
|
uint32_t host_len = host.Length();
|
|
uint32_t filter_host_len = hinfo->name.host_len;
|
|
|
|
if (host_len >= filter_host_len) {
|
|
//
|
|
// compare last |filter_host_len| bytes of target hostname.
|
|
//
|
|
const char* host_tail = host.get() + host_len - filter_host_len;
|
|
if (!nsCRT::strncasecmp(host_tail, hinfo->name.host, filter_host_len)) {
|
|
// If the tail of the host string matches the filter
|
|
|
|
if (filter_host_len > 0 && hinfo->name.host[0] == '.') {
|
|
// If the filter was of the form .foo.bar.tld, all such
|
|
// matches are correct
|
|
return false; // proxy disallowed
|
|
}
|
|
|
|
// abc-def.example.org should not match def.example.org
|
|
// however, *.def.example.org should match .def.example.org
|
|
// We check that the filter doesn't start with a `.`. If it does,
|
|
// then the strncasecmp above should suffice. If it doesn't,
|
|
// then we should only consider it a match if the strncasecmp happened
|
|
// at a subdomain boundary
|
|
if (host_len > filter_host_len && *(host_tail - 1) == '.') {
|
|
// If the host was something.foo.bar.tld and the filter
|
|
// was foo.bar.tld, it's still a match.
|
|
// the character right before the tail must be a
|
|
// `.` for this to work
|
|
return false; // proxy disallowed
|
|
}
|
|
|
|
if (host_len == filter_host_len) {
|
|
// If the host and filter are of the same length,
|
|
// they should match
|
|
return false; // proxy disallowed
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
// kProxyType\* may be referred to externally in
|
|
// nsProxyInfo in order to compare by string pointer
|
|
const char kProxyType_HTTP[] = "http";
|
|
const char kProxyType_HTTPS[] = "https";
|
|
const char kProxyType_PROXY[] = "proxy";
|
|
const char kProxyType_SOCKS[] = "socks";
|
|
const char kProxyType_SOCKS4[] = "socks4";
|
|
const char kProxyType_SOCKS5[] = "socks5";
|
|
const char kProxyType_DIRECT[] = "direct";
|
|
|
|
const char* nsProtocolProxyService::ExtractProxyInfo(const char* start,
|
|
uint32_t aResolveFlags,
|
|
nsProxyInfo** result) {
|
|
*result = nullptr;
|
|
uint32_t flags = 0;
|
|
|
|
// see BNF in ProxyAutoConfig.h and notes in nsISystemProxySettings.idl
|
|
|
|
// find end of proxy info delimiter
|
|
const char* end = start;
|
|
while (*end && *end != ';') ++end;
|
|
|
|
// find end of proxy type delimiter
|
|
const char* sp = start;
|
|
while (sp < end && *sp != ' ' && *sp != '\t') ++sp;
|
|
|
|
uint32_t len = sp - start;
|
|
const char* type = nullptr;
|
|
switch (len) {
|
|
case 4:
|
|
if (nsCRT::strncasecmp(start, kProxyType_HTTP, 4) == 0) {
|
|
type = kProxyType_HTTP;
|
|
}
|
|
break;
|
|
case 5:
|
|
if (nsCRT::strncasecmp(start, kProxyType_PROXY, 5) == 0) {
|
|
type = kProxyType_HTTP;
|
|
} else if (nsCRT::strncasecmp(start, kProxyType_SOCKS, 5) == 0) {
|
|
type = kProxyType_SOCKS4; // assume v4 for 4x compat
|
|
if (StaticPrefs::network_proxy_default_pac_script_socks_version() ==
|
|
5) {
|
|
type = kProxyType_SOCKS;
|
|
}
|
|
} else if (nsCRT::strncasecmp(start, kProxyType_HTTPS, 5) == 0) {
|
|
type = kProxyType_HTTPS;
|
|
}
|
|
break;
|
|
case 6:
|
|
if (nsCRT::strncasecmp(start, kProxyType_DIRECT, 6) == 0) {
|
|
type = kProxyType_DIRECT;
|
|
} else if (nsCRT::strncasecmp(start, kProxyType_SOCKS4, 6) == 0) {
|
|
type = kProxyType_SOCKS4;
|
|
} else if (nsCRT::strncasecmp(start, kProxyType_SOCKS5, 6) == 0) {
|
|
// map "SOCKS5" to "socks" to match contract-id of registered
|
|
// SOCKS-v5 socket provider.
|
|
type = kProxyType_SOCKS;
|
|
}
|
|
break;
|
|
}
|
|
if (type) {
|
|
int32_t port = -1;
|
|
|
|
// If it's a SOCKS5 proxy, do name resolution on the server side.
|
|
// We could use this with SOCKS4a servers too, but they might not
|
|
// support it.
|
|
if (type == kProxyType_SOCKS || mSOCKS5ProxyRemoteDNS) {
|
|
flags |= nsIProxyInfo::TRANSPARENT_PROXY_RESOLVES_HOST;
|
|
}
|
|
|
|
// extract host:port
|
|
start = sp;
|
|
while ((*start == ' ' || *start == '\t') && start < end) start++;
|
|
|
|
// port defaults
|
|
if (type == kProxyType_HTTP) {
|
|
port = 80;
|
|
} else if (type == kProxyType_HTTPS) {
|
|
port = 443;
|
|
} else {
|
|
port = 1080;
|
|
}
|
|
|
|
RefPtr<nsProxyInfo> pi = new nsProxyInfo();
|
|
pi->mType = type;
|
|
pi->mFlags = flags;
|
|
pi->mResolveFlags = aResolveFlags;
|
|
pi->mTimeout = mFailedProxyTimeout;
|
|
|
|
// www.foo.com:8080 and http://www.foo.com:8080
|
|
nsDependentCSubstring maybeURL(start, end - start);
|
|
nsCOMPtr<nsIURI> pacURI;
|
|
|
|
nsAutoCString urlHost;
|
|
// First assume the scheme is present, e.g. http://www.example.com:8080
|
|
if (NS_FAILED(NS_NewURI(getter_AddRefs(pacURI), maybeURL)) ||
|
|
NS_FAILED(pacURI->GetAsciiHost(urlHost)) || urlHost.IsEmpty()) {
|
|
// It isn't, assume www.example.com:8080
|
|
maybeURL.Insert("http://", 0);
|
|
|
|
if (NS_SUCCEEDED(NS_NewURI(getter_AddRefs(pacURI), maybeURL))) {
|
|
pacURI->GetAsciiHost(urlHost);
|
|
}
|
|
}
|
|
|
|
if (!urlHost.IsEmpty()) {
|
|
pi->mHost = urlHost;
|
|
|
|
int32_t tPort;
|
|
if (NS_SUCCEEDED(pacURI->GetPort(&tPort)) && tPort != -1) {
|
|
port = tPort;
|
|
}
|
|
pi->mPort = port;
|
|
}
|
|
|
|
pi.forget(result);
|
|
}
|
|
|
|
while (*end == ';' || *end == ' ' || *end == '\t') ++end;
|
|
return end;
|
|
}
|
|
|
|
void nsProtocolProxyService::GetProxyKey(nsProxyInfo* pi, nsCString& key) {
|
|
key.AssignASCII(pi->mType);
|
|
if (!pi->mHost.IsEmpty()) {
|
|
key.Append(' ');
|
|
key.Append(pi->mHost);
|
|
key.Append(':');
|
|
key.AppendInt(pi->mPort);
|
|
}
|
|
}
|
|
|
|
uint32_t nsProtocolProxyService::SecondsSinceSessionStart() {
|
|
PRTime now = PR_Now();
|
|
|
|
// get time elapsed since session start
|
|
int64_t diff = now - mSessionStart;
|
|
|
|
// convert microseconds to seconds
|
|
diff /= PR_USEC_PER_SEC;
|
|
|
|
// return converted 32 bit value
|
|
return uint32_t(diff);
|
|
}
|
|
|
|
void nsProtocolProxyService::EnableProxy(nsProxyInfo* pi) {
|
|
nsAutoCString key;
|
|
GetProxyKey(pi, key);
|
|
mFailedProxies.Remove(key);
|
|
}
|
|
|
|
void nsProtocolProxyService::DisableProxy(nsProxyInfo* pi) {
|
|
nsAutoCString key;
|
|
GetProxyKey(pi, key);
|
|
|
|
uint32_t dsec = SecondsSinceSessionStart();
|
|
|
|
// Add timeout to interval (this is the time when the proxy can
|
|
// be tried again).
|
|
dsec += pi->mTimeout;
|
|
|
|
// NOTE: The classic codebase would increase the timeout value
|
|
// incrementally each time a subsequent failure occurred.
|
|
// We could do the same, but it would require that we not
|
|
// remove proxy entries in IsProxyDisabled or otherwise
|
|
// change the way we are recording disabled proxies.
|
|
// Simpler is probably better for now, and at least the
|
|
// user can tune the timeout setting via preferences.
|
|
|
|
LOG(("DisableProxy %s %d\n", key.get(), dsec));
|
|
|
|
// If this fails, oh well... means we don't have enough memory
|
|
// to remember the failed proxy.
|
|
mFailedProxies.InsertOrUpdate(key, dsec);
|
|
}
|
|
|
|
bool nsProtocolProxyService::IsProxyDisabled(nsProxyInfo* pi) {
|
|
nsAutoCString key;
|
|
GetProxyKey(pi, key);
|
|
|
|
uint32_t val;
|
|
if (!mFailedProxies.Get(key, &val)) return false;
|
|
|
|
uint32_t dsec = SecondsSinceSessionStart();
|
|
|
|
// if time passed has exceeded interval, then try proxy again.
|
|
if (dsec > val) {
|
|
mFailedProxies.Remove(key);
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
nsresult nsProtocolProxyService::SetupPACThread(
|
|
nsISerialEventTarget* mainThreadEventTarget) {
|
|
if (mIsShutdown) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
if (mPACMan) return NS_OK;
|
|
|
|
mPACMan = new nsPACMan(mainThreadEventTarget);
|
|
|
|
bool mainThreadOnly;
|
|
nsresult rv;
|
|
if (mSystemProxySettings &&
|
|
NS_SUCCEEDED(mSystemProxySettings->GetMainThreadOnly(&mainThreadOnly)) &&
|
|
!mainThreadOnly) {
|
|
rv = mPACMan->Init(mSystemProxySettings);
|
|
} else {
|
|
rv = mPACMan->Init(nullptr);
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
mPACMan->Shutdown();
|
|
mPACMan = nullptr;
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
nsresult nsProtocolProxyService::ResetPACThread() {
|
|
if (!mPACMan) return NS_OK;
|
|
|
|
mPACMan->Shutdown();
|
|
mPACMan = nullptr;
|
|
return SetupPACThread();
|
|
}
|
|
|
|
nsresult nsProtocolProxyService::ConfigureFromPAC(const nsCString& spec,
|
|
bool forceReload) {
|
|
nsresult rv = SetupPACThread();
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
bool autodetect = spec.IsEmpty();
|
|
if (!forceReload && ((!autodetect && mPACMan->IsPACURI(spec)) ||
|
|
(autodetect && mPACMan->IsUsingWPAD()))) {
|
|
return NS_OK;
|
|
}
|
|
|
|
mFailedProxies.Clear();
|
|
|
|
mPACMan->SetWPADOverDHCPEnabled(mWPADOverDHCPEnabled);
|
|
return mPACMan->LoadPACFromURI(spec);
|
|
}
|
|
|
|
void nsProtocolProxyService::ProcessPACString(const nsCString& pacString,
|
|
uint32_t aResolveFlags,
|
|
nsIProxyInfo** result) {
|
|
if (pacString.IsEmpty()) {
|
|
*result = nullptr;
|
|
return;
|
|
}
|
|
|
|
const char* proxies = pacString.get();
|
|
|
|
nsProxyInfo *pi = nullptr, *first = nullptr, *last = nullptr;
|
|
while (*proxies) {
|
|
proxies = ExtractProxyInfo(proxies, aResolveFlags, &pi);
|
|
if (pi && (pi->mType == kProxyType_HTTPS) && !mProxyOverTLS) {
|
|
delete pi;
|
|
pi = nullptr;
|
|
}
|
|
|
|
if (pi) {
|
|
if (last) {
|
|
NS_ASSERTION(last->mNext == nullptr, "leaking nsProxyInfo");
|
|
last->mNext = pi;
|
|
} else {
|
|
first = pi;
|
|
}
|
|
last = pi;
|
|
}
|
|
}
|
|
*result = first;
|
|
}
|
|
|
|
// nsIProtocolProxyService2
|
|
NS_IMETHODIMP
|
|
nsProtocolProxyService::ReloadPAC() {
|
|
nsCOMPtr<nsIPrefBranch> prefs = do_GetService(NS_PREFSERVICE_CONTRACTID);
|
|
if (!prefs) return NS_OK;
|
|
|
|
int32_t type;
|
|
nsresult rv = prefs->GetIntPref(PROXY_PREF("type"), &type);
|
|
if (NS_FAILED(rv)) return NS_OK;
|
|
|
|
nsAutoCString pacSpec;
|
|
if (type == PROXYCONFIG_PAC) {
|
|
prefs->GetCharPref(PROXY_PREF("autoconfig_url"), pacSpec);
|
|
} else if (type == PROXYCONFIG_SYSTEM) {
|
|
if (mSystemProxySettings) {
|
|
AsyncConfigureWPADOrFromPAC(true, true,
|
|
StaticPrefs::network_proxy_system_wpad());
|
|
} else {
|
|
ResetPACThread();
|
|
}
|
|
}
|
|
|
|
if (!pacSpec.IsEmpty() || type == PROXYCONFIG_WPAD) {
|
|
ConfigureFromPAC(pacSpec, true);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
// When sync interface is removed this can go away too
|
|
// The nsPACManCallback portion of this implementation should be run
|
|
// off the main thread, because it uses a condvar for signaling and
|
|
// the main thread is blocking on that condvar -
|
|
// so call nsPACMan::AsyncGetProxyForURI() with
|
|
// a false mainThreadResponse parameter.
|
|
class nsAsyncBridgeRequest final : public nsPACManCallback {
|
|
NS_DECL_THREADSAFE_ISUPPORTS
|
|
|
|
nsAsyncBridgeRequest()
|
|
: mMutex("nsDeprecatedCallback"),
|
|
mCondVar(mMutex, "nsDeprecatedCallback") {}
|
|
|
|
void OnQueryComplete(nsresult status, const nsACString& pacString,
|
|
const nsACString& newPACURL) override {
|
|
MutexAutoLock lock(mMutex);
|
|
mCompleted = true;
|
|
mStatus = status;
|
|
mPACString = pacString;
|
|
mPACURL = newPACURL;
|
|
mCondVar.Notify();
|
|
}
|
|
|
|
void Lock() MOZ_CAPABILITY_ACQUIRE(mMutex) { mMutex.Lock(); }
|
|
void Unlock() MOZ_CAPABILITY_RELEASE(mMutex) { mMutex.Unlock(); }
|
|
void Wait() { mCondVar.Wait(TimeDuration::FromSeconds(3)); }
|
|
|
|
private:
|
|
~nsAsyncBridgeRequest() = default;
|
|
|
|
friend class nsProtocolProxyService;
|
|
|
|
Mutex mMutex;
|
|
CondVar mCondVar;
|
|
|
|
nsresult mStatus MOZ_GUARDED_BY(mMutex){NS_OK};
|
|
nsCString mPACString MOZ_GUARDED_BY(mMutex);
|
|
nsCString mPACURL MOZ_GUARDED_BY(mMutex);
|
|
bool mCompleted MOZ_GUARDED_BY(mMutex){false};
|
|
};
|
|
NS_IMPL_ISUPPORTS0(nsAsyncBridgeRequest)
|
|
|
|
nsresult nsProtocolProxyService::AsyncResolveInternal(
|
|
nsIChannel* channel, uint32_t flags, nsIProtocolProxyCallback* callback,
|
|
nsICancelable** result, bool isSyncOK,
|
|
nsISerialEventTarget* mainThreadEventTarget) {
|
|
NS_ENSURE_ARG_POINTER(channel);
|
|
NS_ENSURE_ARG_POINTER(callback);
|
|
|
|
nsCOMPtr<nsIURI> uri;
|
|
nsresult rv = GetProxyURI(channel, getter_AddRefs(uri));
|
|
if (NS_FAILED(rv)) return rv;
|
|
|
|
*result = nullptr;
|
|
RefPtr<nsAsyncResolveRequest> ctx =
|
|
new nsAsyncResolveRequest(this, channel, flags, callback);
|
|
|
|
nsProtocolInfo info;
|
|
rv = GetProtocolInfo(uri, &info);
|
|
if (NS_FAILED(rv)) return rv;
|
|
|
|
nsCOMPtr<nsIProxyInfo> pi;
|
|
bool usePACThread;
|
|
|
|
// adapt to realtime changes in the system proxy service
|
|
if (mProxyConfig == PROXYCONFIG_SYSTEM &&
|
|
!StaticPrefs::network_proxy_system_wpad()) {
|
|
nsCOMPtr<nsISystemProxySettings> sp2 =
|
|
do_GetService(NS_SYSTEMPROXYSETTINGS_CONTRACTID);
|
|
if (sp2 != mSystemProxySettings) {
|
|
mSystemProxySettings = sp2;
|
|
ResetPACThread();
|
|
}
|
|
}
|
|
|
|
rv = SetupPACThread(mainThreadEventTarget);
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
|
|
// SystemProxySettings and PAC files can block the main thread
|
|
// but if neither of them are in use, we can just do the work
|
|
// right here and directly invoke the callback
|
|
|
|
rv =
|
|
Resolve_Internal(channel, info, flags, &usePACThread, getter_AddRefs(pi));
|
|
if (NS_FAILED(rv)) return rv;
|
|
|
|
if (!usePACThread || !mPACMan) {
|
|
// we can do it locally
|
|
rv = ctx->ProcessLocally(info, pi, isSyncOK);
|
|
if (NS_SUCCEEDED(rv) && !isSyncOK) {
|
|
ctx.forget(result);
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
// else kick off a PAC thread query
|
|
rv = mPACMan->AsyncGetProxyForURI(uri, ctx, flags, true);
|
|
if (NS_SUCCEEDED(rv)) ctx.forget(result);
|
|
return rv;
|
|
}
|
|
|
|
// nsIProtocolProxyService
|
|
NS_IMETHODIMP
|
|
nsProtocolProxyService::AsyncResolve2(
|
|
nsIChannel* channel, uint32_t flags, nsIProtocolProxyCallback* callback,
|
|
nsISerialEventTarget* mainThreadEventTarget, nsICancelable** result) {
|
|
return AsyncResolveInternal(channel, flags, callback, result, true,
|
|
mainThreadEventTarget);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsProtocolProxyService::AsyncResolve(
|
|
nsISupports* channelOrURI, uint32_t flags,
|
|
nsIProtocolProxyCallback* callback,
|
|
nsISerialEventTarget* mainThreadEventTarget, nsICancelable** result) {
|
|
nsresult rv;
|
|
// Check if we got a channel:
|
|
nsCOMPtr<nsIChannel> channel = do_QueryInterface(channelOrURI);
|
|
if (!channel) {
|
|
nsCOMPtr<nsIURI> uri = do_QueryInterface(channelOrURI);
|
|
if (!uri) {
|
|
return NS_ERROR_NO_INTERFACE;
|
|
}
|
|
|
|
// creating a temporary channel from the URI which is not
|
|
// used to perform any network loads, hence its safe to
|
|
// use systemPrincipal as the loadingPrincipal.
|
|
rv = NS_NewChannel(getter_AddRefs(channel), uri,
|
|
nsContentUtils::GetSystemPrincipal(),
|
|
nsILoadInfo::SEC_ALLOW_CROSS_ORIGIN_SEC_CONTEXT_IS_NULL,
|
|
nsIContentPolicy::TYPE_OTHER);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
|
|
return AsyncResolveInternal(channel, flags, callback, result, false,
|
|
mainThreadEventTarget);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsProtocolProxyService::NewProxyInfo(
|
|
const nsACString& aType, const nsACString& aHost, int32_t aPort,
|
|
const nsACString& aProxyAuthorizationHeader,
|
|
const nsACString& aConnectionIsolationKey, uint32_t aFlags,
|
|
uint32_t aFailoverTimeout, nsIProxyInfo* aFailoverProxy,
|
|
nsIProxyInfo** aResult) {
|
|
return NewProxyInfoWithAuth(aType, aHost, aPort, ""_ns, ""_ns,
|
|
aProxyAuthorizationHeader,
|
|
aConnectionIsolationKey, aFlags, aFailoverTimeout,
|
|
aFailoverProxy, aResult);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsProtocolProxyService::NewProxyInfoWithAuth(
|
|
const nsACString& aType, const nsACString& aHost, int32_t aPort,
|
|
const nsACString& aUsername, const nsACString& aPassword,
|
|
const nsACString& aProxyAuthorizationHeader,
|
|
const nsACString& aConnectionIsolationKey, uint32_t aFlags,
|
|
uint32_t aFailoverTimeout, nsIProxyInfo* aFailoverProxy,
|
|
nsIProxyInfo** aResult) {
|
|
static const char* types[] = {kProxyType_HTTP, kProxyType_HTTPS,
|
|
kProxyType_SOCKS, kProxyType_SOCKS4,
|
|
kProxyType_DIRECT};
|
|
|
|
// resolve type; this allows us to avoid copying the type string into each
|
|
// proxy info instance. we just reference the string literals directly :)
|
|
const char* type = nullptr;
|
|
for (auto& t : types) {
|
|
if (aType.LowerCaseEqualsASCII(t)) {
|
|
type = t;
|
|
break;
|
|
}
|
|
}
|
|
NS_ENSURE_TRUE(type, NS_ERROR_INVALID_ARG);
|
|
|
|
// We have only implemented username/password for SOCKS proxies.
|
|
if ((!aUsername.IsEmpty() || !aPassword.IsEmpty()) &&
|
|
!aType.LowerCaseEqualsASCII(kProxyType_SOCKS) &&
|
|
!aType.LowerCaseEqualsASCII(kProxyType_SOCKS4)) {
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
return NewProxyInfo_Internal(type, aHost, aPort, aUsername, aPassword,
|
|
aProxyAuthorizationHeader,
|
|
aConnectionIsolationKey, aFlags,
|
|
aFailoverTimeout, aFailoverProxy, 0, aResult);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsProtocolProxyService::GetFailoverForProxy(nsIProxyInfo* aProxy, nsIURI* aURI,
|
|
nsresult aStatus,
|
|
nsIProxyInfo** aResult) {
|
|
// Failover is supported through a variety of methods including:
|
|
// * PAC scripts (PROXYCONFIG_PAC and PROXYCONFIG_WPAD)
|
|
// * System proxy
|
|
// * Extensions
|
|
// With extensions the mProxyConfig can be any type and the extension
|
|
// is still involved in the proxy filtering. It may have also supplied
|
|
// any number of failover proxies. We cannot determine what the mix is
|
|
// here, so we will attempt to get a failover regardless of the config
|
|
// type. MANUAL configuration will not disable a proxy.
|
|
|
|
// Verify that |aProxy| is one of our nsProxyInfo objects.
|
|
nsCOMPtr<nsProxyInfo> pi = do_QueryInterface(aProxy);
|
|
NS_ENSURE_ARG(pi);
|
|
// OK, the QI checked out. We can proceed.
|
|
|
|
// Remember that this proxy is down. If the user has manually configured some
|
|
// proxies we do not want to disable them.
|
|
if (mProxyConfig != PROXYCONFIG_MANUAL) {
|
|
DisableProxy(pi);
|
|
}
|
|
|
|
// NOTE: At this point, we might want to prompt the user if we have
|
|
// not already tried going DIRECT. This is something that the
|
|
// classic codebase supported; however, IE6 does not prompt.
|
|
|
|
if (!pi->mNext) return NS_ERROR_NOT_AVAILABLE;
|
|
|
|
LOG(("PAC failover from %s %s:%d to %s %s:%d\n", pi->mType, pi->mHost.get(),
|
|
pi->mPort, pi->mNext->mType, pi->mNext->mHost.get(), pi->mNext->mPort));
|
|
|
|
*aResult = do_AddRef(pi->mNext).take();
|
|
return NS_OK;
|
|
}
|
|
|
|
namespace { // anon
|
|
|
|
class ProxyFilterPositionComparator {
|
|
using FilterLinkRef = RefPtr<nsProtocolProxyService::FilterLink>;
|
|
|
|
public:
|
|
bool Equals(const FilterLinkRef& a, const FilterLinkRef& b) const {
|
|
return a->position == b->position;
|
|
}
|
|
bool LessThan(const FilterLinkRef& a, const FilterLinkRef& b) const {
|
|
return a->position < b->position;
|
|
}
|
|
};
|
|
|
|
class ProxyFilterObjectComparator {
|
|
using FilterLinkRef = RefPtr<nsProtocolProxyService::FilterLink>;
|
|
|
|
public:
|
|
bool Equals(const FilterLinkRef& link, const nsISupports* obj) const {
|
|
return obj == nsCOMPtr<nsISupports>(do_QueryInterface(link->filter)) ||
|
|
obj == nsCOMPtr<nsISupports>(do_QueryInterface(link->channelFilter));
|
|
}
|
|
};
|
|
|
|
} // namespace
|
|
|
|
nsresult nsProtocolProxyService::InsertFilterLink(RefPtr<FilterLink>&& link) {
|
|
LOG(("nsProtocolProxyService::InsertFilterLink filter=%p", link.get()));
|
|
|
|
if (mIsShutdown) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// If we add a new element with the same position as an existing one, we want
|
|
// to preserve the insertion order to avoid surprises.
|
|
mFilters.InsertElementSorted(link, ProxyFilterPositionComparator());
|
|
|
|
NotifyProxyConfigChangedInternal();
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsProtocolProxyService::RegisterFilter(nsIProtocolProxyFilter* filter,
|
|
uint32_t position) {
|
|
UnregisterFilter(filter); // remove this filter if we already have it
|
|
|
|
RefPtr<FilterLink> link = new FilterLink(position, filter);
|
|
return InsertFilterLink(std::move(link));
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsProtocolProxyService::RegisterChannelFilter(
|
|
nsIProtocolProxyChannelFilter* channelFilter, uint32_t position) {
|
|
UnregisterChannelFilter(
|
|
channelFilter); // remove this filter if we already have it
|
|
|
|
RefPtr<FilterLink> link = new FilterLink(position, channelFilter);
|
|
return InsertFilterLink(std::move(link));
|
|
}
|
|
|
|
nsresult nsProtocolProxyService::RemoveFilterLink(nsISupports* givenObject) {
|
|
LOG(("nsProtocolProxyService::RemoveFilterLink target=%p", givenObject));
|
|
|
|
nsresult rv =
|
|
mFilters.RemoveElement(givenObject, ProxyFilterObjectComparator())
|
|
? NS_OK
|
|
: NS_ERROR_UNEXPECTED;
|
|
if (NS_SUCCEEDED(rv)) {
|
|
NotifyProxyConfigChangedInternal();
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsProtocolProxyService::UnregisterFilter(nsIProtocolProxyFilter* filter) {
|
|
// QI to nsISupports so we can safely test object identity.
|
|
nsCOMPtr<nsISupports> givenObject = do_QueryInterface(filter);
|
|
return RemoveFilterLink(givenObject);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsProtocolProxyService::UnregisterChannelFilter(
|
|
nsIProtocolProxyChannelFilter* channelFilter) {
|
|
// QI to nsISupports so we can safely test object identity.
|
|
nsCOMPtr<nsISupports> givenObject = do_QueryInterface(channelFilter);
|
|
return RemoveFilterLink(givenObject);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsProtocolProxyService::GetProxyConfigType(uint32_t* aProxyConfigType) {
|
|
*aProxyConfigType = mProxyConfig;
|
|
return NS_OK;
|
|
}
|
|
|
|
void nsProtocolProxyService::LoadHostFilters(const nsACString& aFilters) {
|
|
if (mIsShutdown) {
|
|
return;
|
|
}
|
|
|
|
// check to see the owners flag? /!?/ TODO
|
|
if (mHostFiltersArray.Length() > 0) {
|
|
mHostFiltersArray.Clear();
|
|
}
|
|
|
|
// Reset mFilterLocalHosts - will be set to true if "<local>" is in pref
|
|
// string
|
|
mFilterLocalHosts = false;
|
|
|
|
if (aFilters.IsEmpty()) {
|
|
return;
|
|
}
|
|
|
|
//
|
|
// filter = ( host | domain | ipaddr ["/" mask] ) [":" port]
|
|
// filters = filter *( "," LWS filter)
|
|
//
|
|
mozilla::Tokenizer t(aFilters);
|
|
mozilla::Tokenizer::Token token;
|
|
bool eof = false;
|
|
// while (*filters) {
|
|
while (!eof) {
|
|
// skip over spaces and ,
|
|
t.SkipWhites();
|
|
while (t.CheckChar(',')) {
|
|
t.SkipWhites();
|
|
}
|
|
|
|
nsAutoCString portStr;
|
|
nsAutoCString hostStr;
|
|
nsAutoCString maskStr;
|
|
t.Record();
|
|
|
|
bool parsingIPv6 = false;
|
|
bool parsingPort = false;
|
|
bool parsingMask = false;
|
|
while (t.Next(token)) {
|
|
if (token.Equals(mozilla::Tokenizer::Token::EndOfFile())) {
|
|
eof = true;
|
|
break;
|
|
}
|
|
if (token.Equals(mozilla::Tokenizer::Token::Char(',')) ||
|
|
token.Type() == mozilla::Tokenizer::TOKEN_WS) {
|
|
break;
|
|
}
|
|
|
|
if (token.Equals(mozilla::Tokenizer::Token::Char('['))) {
|
|
parsingIPv6 = true;
|
|
continue;
|
|
}
|
|
|
|
if (!parsingIPv6 && token.Equals(mozilla::Tokenizer::Token::Char(':'))) {
|
|
// Port is starting. Claim the previous as host.
|
|
if (parsingMask) {
|
|
t.Claim(maskStr);
|
|
} else {
|
|
t.Claim(hostStr);
|
|
}
|
|
t.Record();
|
|
parsingPort = true;
|
|
continue;
|
|
}
|
|
|
|
if (token.Equals(mozilla::Tokenizer::Token::Char('/'))) {
|
|
t.Claim(hostStr);
|
|
t.Record();
|
|
parsingMask = true;
|
|
continue;
|
|
}
|
|
|
|
if (token.Equals(mozilla::Tokenizer::Token::Char(']'))) {
|
|
parsingIPv6 = false;
|
|
continue;
|
|
}
|
|
}
|
|
if (!parsingPort && !parsingMask) {
|
|
t.Claim(hostStr);
|
|
} else if (parsingPort) {
|
|
t.Claim(portStr);
|
|
} else if (parsingMask) {
|
|
t.Claim(maskStr);
|
|
} else {
|
|
NS_WARNING("Could not parse this rule");
|
|
continue;
|
|
}
|
|
|
|
if (hostStr.IsEmpty()) {
|
|
continue;
|
|
}
|
|
|
|
// If the current host filter is "<local>", then all local (i.e.
|
|
// no dots in the hostname) hosts should bypass the proxy
|
|
if (hostStr.EqualsIgnoreCase("<local>")) {
|
|
mFilterLocalHosts = true;
|
|
LOG(
|
|
("loaded filter for local hosts "
|
|
"(plain host names, no dots)\n"));
|
|
// Continue to next host filter;
|
|
continue;
|
|
}
|
|
|
|
// For all other host filters, create HostInfo object and add to list
|
|
HostInfo* hinfo = new HostInfo();
|
|
nsresult rv = NS_OK;
|
|
|
|
int32_t port = portStr.ToInteger(&rv);
|
|
if (NS_FAILED(rv)) {
|
|
port = 0;
|
|
}
|
|
hinfo->port = port;
|
|
|
|
int32_t maskLen = maskStr.ToInteger(&rv);
|
|
if (NS_FAILED(rv)) {
|
|
maskLen = 128;
|
|
}
|
|
|
|
// PR_StringToNetAddr can't parse brackets enclosed IPv6
|
|
nsAutoCString addrString = hostStr;
|
|
if (hostStr.First() == '[' && hostStr.Last() == ']') {
|
|
addrString = Substring(hostStr, 1, hostStr.Length() - 2);
|
|
}
|
|
|
|
PRNetAddr addr;
|
|
if (PR_StringToNetAddr(addrString.get(), &addr) == PR_SUCCESS) {
|
|
hinfo->is_ipaddr = true;
|
|
hinfo->ip.family = PR_AF_INET6; // we always store address as IPv6
|
|
hinfo->ip.mask_len = maskLen;
|
|
|
|
if (hinfo->ip.mask_len == 0) {
|
|
NS_WARNING("invalid mask");
|
|
goto loser;
|
|
}
|
|
|
|
if (addr.raw.family == PR_AF_INET) {
|
|
// convert to IPv4-mapped address
|
|
PR_ConvertIPv4AddrToIPv6(addr.inet.ip, &hinfo->ip.addr);
|
|
// adjust mask_len accordingly
|
|
if (hinfo->ip.mask_len <= 32) hinfo->ip.mask_len += 96;
|
|
} else if (addr.raw.family == PR_AF_INET6) {
|
|
// copy the address
|
|
memcpy(&hinfo->ip.addr, &addr.ipv6.ip, sizeof(PRIPv6Addr));
|
|
} else {
|
|
NS_WARNING("unknown address family");
|
|
goto loser;
|
|
}
|
|
|
|
// apply mask to IPv6 address
|
|
proxy_MaskIPv6Addr(hinfo->ip.addr, hinfo->ip.mask_len);
|
|
} else {
|
|
nsAutoCString host;
|
|
if (hostStr.First() == '*') {
|
|
host = Substring(hostStr, 1);
|
|
} else {
|
|
host = hostStr;
|
|
}
|
|
|
|
if (host.IsEmpty()) {
|
|
hinfo->name.host = nullptr;
|
|
goto loser;
|
|
}
|
|
|
|
hinfo->name.host_len = host.Length();
|
|
|
|
hinfo->is_ipaddr = false;
|
|
hinfo->name.host = ToNewCString(host, mozilla::fallible);
|
|
|
|
if (!hinfo->name.host) goto loser;
|
|
}
|
|
|
|
// #define DEBUG_DUMP_FILTERS
|
|
#ifdef DEBUG_DUMP_FILTERS
|
|
printf("loaded filter[%zu]:\n", mHostFiltersArray.Length());
|
|
printf(" is_ipaddr = %u\n", hinfo->is_ipaddr);
|
|
printf(" port = %u\n", hinfo->port);
|
|
printf(" host = %s\n", hostStr.get());
|
|
if (hinfo->is_ipaddr) {
|
|
printf(" ip.family = %x\n", hinfo->ip.family);
|
|
printf(" ip.mask_len = %u\n", hinfo->ip.mask_len);
|
|
|
|
PRNetAddr netAddr;
|
|
PR_SetNetAddr(PR_IpAddrNull, PR_AF_INET6, 0, &netAddr);
|
|
memcpy(&netAddr.ipv6.ip, &hinfo->ip.addr, sizeof(hinfo->ip.addr));
|
|
|
|
char buf[256];
|
|
PR_NetAddrToString(&netAddr, buf, sizeof(buf));
|
|
|
|
printf(" ip.addr = %s\n", buf);
|
|
} else {
|
|
printf(" name.host = %s\n", hinfo->name.host);
|
|
}
|
|
#endif
|
|
|
|
mHostFiltersArray.AppendElement(hinfo);
|
|
hinfo = nullptr;
|
|
loser:
|
|
delete hinfo;
|
|
}
|
|
}
|
|
|
|
nsresult nsProtocolProxyService::GetProtocolInfo(nsIURI* uri,
|
|
nsProtocolInfo* info) {
|
|
AssertIsOnMainThread();
|
|
MOZ_ASSERT(uri, "URI is null");
|
|
MOZ_ASSERT(info, "info is null");
|
|
|
|
nsresult rv;
|
|
|
|
rv = uri->GetScheme(info->scheme);
|
|
if (NS_FAILED(rv)) return rv;
|
|
|
|
nsCOMPtr<nsIIOService> ios = do_GetIOService(&rv);
|
|
if (NS_FAILED(rv)) return rv;
|
|
|
|
rv = ios->GetDynamicProtocolFlags(uri, &info->flags);
|
|
if (NS_FAILED(rv)) return rv;
|
|
|
|
rv = ios->GetDefaultPort(info->scheme.get(), &info->defaultPort);
|
|
return rv;
|
|
}
|
|
|
|
nsresult nsProtocolProxyService::NewProxyInfo_Internal(
|
|
const char* aType, const nsACString& aHost, int32_t aPort,
|
|
const nsACString& aUsername, const nsACString& aPassword,
|
|
const nsACString& aProxyAuthorizationHeader,
|
|
const nsACString& aConnectionIsolationKey, uint32_t aFlags,
|
|
uint32_t aFailoverTimeout, nsIProxyInfo* aFailoverProxy,
|
|
uint32_t aResolveFlags, nsIProxyInfo** aResult) {
|
|
if (aPort <= 0) aPort = -1;
|
|
|
|
nsCOMPtr<nsProxyInfo> failover;
|
|
if (aFailoverProxy) {
|
|
failover = do_QueryInterface(aFailoverProxy);
|
|
NS_ENSURE_ARG(failover);
|
|
}
|
|
|
|
RefPtr<nsProxyInfo> proxyInfo = new nsProxyInfo();
|
|
|
|
proxyInfo->mType = aType;
|
|
proxyInfo->mHost = aHost;
|
|
proxyInfo->mPort = aPort;
|
|
proxyInfo->mUsername = aUsername;
|
|
proxyInfo->mPassword = aPassword;
|
|
proxyInfo->mFlags = aFlags;
|
|
proxyInfo->mResolveFlags = aResolveFlags;
|
|
proxyInfo->mTimeout =
|
|
aFailoverTimeout == UINT32_MAX ? mFailedProxyTimeout : aFailoverTimeout;
|
|
proxyInfo->mProxyAuthorizationHeader = aProxyAuthorizationHeader;
|
|
proxyInfo->mConnectionIsolationKey = aConnectionIsolationKey;
|
|
failover.swap(proxyInfo->mNext);
|
|
|
|
proxyInfo.forget(aResult);
|
|
return NS_OK;
|
|
}
|
|
|
|
const char* nsProtocolProxyService::SOCKSProxyType() {
|
|
if (mSOCKSProxyVersion == nsIProxyInfo::SOCKS_V4) {
|
|
return kProxyType_SOCKS4;
|
|
}
|
|
return kProxyType_SOCKS;
|
|
}
|
|
|
|
bool nsProtocolProxyService::SOCKSRemoteDNS() {
|
|
return (mSOCKSProxyVersion == nsIProxyInfo::SOCKS_V4 &&
|
|
mSOCKS4ProxyRemoteDNS) ||
|
|
(mSOCKSProxyVersion == nsIProxyInfo::SOCKS_V5 &&
|
|
mSOCKS5ProxyRemoteDNS);
|
|
}
|
|
|
|
nsresult nsProtocolProxyService::Resolve_Internal(nsIChannel* channel,
|
|
const nsProtocolInfo& info,
|
|
uint32_t flags,
|
|
bool* usePACThread,
|
|
nsIProxyInfo** result) {
|
|
NS_ENSURE_ARG_POINTER(channel);
|
|
|
|
*usePACThread = false;
|
|
*result = nullptr;
|
|
|
|
if (!(info.flags & nsIProtocolHandler::ALLOWS_PROXY)) {
|
|
return NS_OK; // Can't proxy this (filters may not override)
|
|
}
|
|
|
|
nsCOMPtr<nsIURI> uri;
|
|
nsresult rv = GetProxyURI(channel, getter_AddRefs(uri));
|
|
if (NS_FAILED(rv)) return rv;
|
|
|
|
// See bug #586908.
|
|
// Avoid endless loop if |uri| is the current PAC-URI. Returning OK
|
|
// here means that we will not use a proxy for this connection.
|
|
if (mPACMan && mPACMan->IsPACURI(uri)) return NS_OK;
|
|
|
|
// if proxies are enabled and this host:port combo is supposed to use a
|
|
// proxy, check for a proxy.
|
|
if ((mProxyConfig == PROXYCONFIG_DIRECT) ||
|
|
!CanUseProxy(uri, info.defaultPort)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
bool mainThreadOnly;
|
|
if (mSystemProxySettings && mProxyConfig == PROXYCONFIG_SYSTEM &&
|
|
NS_SUCCEEDED(mSystemProxySettings->GetMainThreadOnly(&mainThreadOnly)) &&
|
|
!mainThreadOnly) {
|
|
*usePACThread = true;
|
|
return NS_OK;
|
|
}
|
|
|
|
if (mSystemProxySettings && mProxyConfig == PROXYCONFIG_SYSTEM) {
|
|
// If the system proxy setting implementation is not threadsafe (e.g
|
|
// linux gconf), we'll do it inline here. Such implementations promise
|
|
// not to block
|
|
// bug 1366133: this block uses GetPACURI & GetProxyForURI, which may
|
|
// hang on Windows platform. Fortunately, current implementation on
|
|
// Windows is not main thread only, so we are safe here.
|
|
|
|
nsAutoCString PACURI;
|
|
nsAutoCString pacString;
|
|
|
|
if (NS_SUCCEEDED(mSystemProxySettings->GetPACURI(PACURI)) &&
|
|
!PACURI.IsEmpty()) {
|
|
// There is a PAC URI configured. If it is unchanged, then
|
|
// just execute the PAC thread. If it is changed then load
|
|
// the new value
|
|
|
|
if (mPACMan && mPACMan->IsPACURI(PACURI)) {
|
|
// unchanged
|
|
*usePACThread = true;
|
|
return NS_OK;
|
|
}
|
|
|
|
ConfigureFromPAC(PACURI, false);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsAutoCString spec;
|
|
nsAutoCString host;
|
|
nsAutoCString scheme;
|
|
int32_t port = -1;
|
|
|
|
uri->GetAsciiSpec(spec);
|
|
uri->GetAsciiHost(host);
|
|
uri->GetScheme(scheme);
|
|
uri->GetPort(&port);
|
|
|
|
if (flags & RESOLVE_PREFER_SOCKS_PROXY) {
|
|
LOG(("Ignoring RESOLVE_PREFER_SOCKS_PROXY for system proxy setting\n"));
|
|
} else if (flags & RESOLVE_PREFER_HTTPS_PROXY) {
|
|
scheme.AssignLiteral("https");
|
|
} else if (flags & RESOLVE_IGNORE_URI_SCHEME) {
|
|
scheme.AssignLiteral("http");
|
|
}
|
|
|
|
// now try the system proxy settings for this particular url
|
|
if (NS_SUCCEEDED(mSystemProxySettings->GetProxyForURI(spec, scheme, host,
|
|
port, pacString))) {
|
|
nsCOMPtr<nsIProxyInfo> pi;
|
|
ProcessPACString(pacString, 0, getter_AddRefs(pi));
|
|
|
|
if (flags & RESOLVE_PREFER_SOCKS_PROXY &&
|
|
flags & RESOLVE_PREFER_HTTPS_PROXY) {
|
|
nsAutoCString type;
|
|
pi->GetType(type);
|
|
// DIRECT from ProcessPACString indicates that system proxy settings
|
|
// are not configured to use SOCKS proxy. Try https proxy as a
|
|
// secondary preferrable proxy. This is mainly for websocket whose
|
|
// proxy precedence is SOCKS > HTTPS > DIRECT.
|
|
if (type.EqualsLiteral(kProxyType_DIRECT)) {
|
|
scheme.AssignLiteral(kProxyType_HTTPS);
|
|
if (NS_SUCCEEDED(mSystemProxySettings->GetProxyForURI(
|
|
spec, scheme, host, port, pacString))) {
|
|
ProcessPACString(pacString, 0, getter_AddRefs(pi));
|
|
}
|
|
}
|
|
}
|
|
pi.forget(result);
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
// if proxies are enabled and this host:port combo is supposed to use a
|
|
// proxy, check for a proxy.
|
|
if (mProxyConfig == PROXYCONFIG_DIRECT ||
|
|
(mProxyConfig == PROXYCONFIG_MANUAL &&
|
|
!CanUseProxy(uri, info.defaultPort))) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// Proxy auto config magic...
|
|
if (mProxyConfig == PROXYCONFIG_PAC || mProxyConfig == PROXYCONFIG_WPAD ||
|
|
StaticPrefs::network_proxy_system_wpad()) {
|
|
// Do not query PAC now.
|
|
*usePACThread = true;
|
|
return NS_OK;
|
|
}
|
|
|
|
// If we aren't in manual proxy configuration mode then we don't
|
|
// want to honor any manual specific prefs that might be still set
|
|
if (mProxyConfig != PROXYCONFIG_MANUAL) return NS_OK;
|
|
|
|
// proxy info values for manual configuration mode
|
|
const char* type = nullptr;
|
|
const nsACString* host = nullptr;
|
|
int32_t port = -1;
|
|
|
|
uint32_t proxyFlags = 0;
|
|
|
|
if ((flags & RESOLVE_PREFER_SOCKS_PROXY) && !mSOCKSProxyTarget.IsEmpty() &&
|
|
(IsHostLocalTarget(mSOCKSProxyTarget) || mSOCKSProxyPort > 0)) {
|
|
host = &mSOCKSProxyTarget;
|
|
type = SOCKSProxyType();
|
|
if (SOCKSRemoteDNS()) {
|
|
proxyFlags |= nsIProxyInfo::TRANSPARENT_PROXY_RESOLVES_HOST;
|
|
}
|
|
port = mSOCKSProxyPort;
|
|
} else if ((flags & RESOLVE_PREFER_HTTPS_PROXY) &&
|
|
!mHTTPSProxyHost.IsEmpty() && mHTTPSProxyPort > 0) {
|
|
host = &mHTTPSProxyHost;
|
|
type = kProxyType_HTTP;
|
|
port = mHTTPSProxyPort;
|
|
} else if (!mHTTPProxyHost.IsEmpty() && mHTTPProxyPort > 0 &&
|
|
((flags & RESOLVE_IGNORE_URI_SCHEME) ||
|
|
info.scheme.EqualsLiteral("http"))) {
|
|
host = &mHTTPProxyHost;
|
|
type = kProxyType_HTTP;
|
|
port = mHTTPProxyPort;
|
|
} else if (!mHTTPSProxyHost.IsEmpty() && mHTTPSProxyPort > 0 &&
|
|
!(flags & RESOLVE_IGNORE_URI_SCHEME) &&
|
|
info.scheme.EqualsLiteral("https")) {
|
|
host = &mHTTPSProxyHost;
|
|
type = kProxyType_HTTP;
|
|
port = mHTTPSProxyPort;
|
|
} else if (!mSOCKSProxyTarget.IsEmpty() &&
|
|
(IsHostLocalTarget(mSOCKSProxyTarget) || mSOCKSProxyPort > 0)) {
|
|
host = &mSOCKSProxyTarget;
|
|
type = SOCKSProxyType();
|
|
if (SOCKSRemoteDNS()) {
|
|
proxyFlags |= nsIProxyInfo::TRANSPARENT_PROXY_RESOLVES_HOST;
|
|
}
|
|
port = mSOCKSProxyPort;
|
|
}
|
|
|
|
if (type) {
|
|
rv = NewProxyInfo_Internal(type, *host, port, ""_ns, ""_ns, ""_ns, ""_ns,
|
|
proxyFlags, UINT32_MAX, nullptr, flags, result);
|
|
if (NS_FAILED(rv)) return rv;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void nsProtocolProxyService::MaybeDisableDNSPrefetch(nsIProxyInfo* aProxy) {
|
|
// Disable Prefetch in the DNS service if a proxy is in use.
|
|
if (!aProxy) return;
|
|
|
|
nsCOMPtr<nsProxyInfo> pi = do_QueryInterface(aProxy);
|
|
if (!pi || !pi->mType || pi->mType == kProxyType_DIRECT) return;
|
|
|
|
if (StaticPrefs::network_dns_prefetch_via_proxy()) {
|
|
return;
|
|
}
|
|
|
|
// To avoid getting DNS service recursively, we directly use
|
|
// GetXPCOMSingleton().
|
|
nsCOMPtr<nsIDNSService> dns = nsDNSService::GetXPCOMSingleton();
|
|
if (!dns) return;
|
|
nsCOMPtr<nsPIDNSService> pdns = do_QueryInterface(dns);
|
|
if (!pdns) return;
|
|
|
|
// We lose the prefetch optimization for the life of the dns service.
|
|
pdns->SetPrefetchEnabled(false);
|
|
}
|
|
|
|
void nsProtocolProxyService::CopyFilters(nsTArray<RefPtr<FilterLink>>& aCopy) {
|
|
MOZ_ASSERT(aCopy.Length() == 0);
|
|
aCopy.AppendElements(mFilters);
|
|
}
|
|
|
|
bool nsProtocolProxyService::ApplyFilter(
|
|
FilterLink const* filterLink, nsIChannel* channel,
|
|
const nsProtocolInfo& info, nsCOMPtr<nsIProxyInfo> list,
|
|
nsIProxyProtocolFilterResult* callback) {
|
|
nsresult rv;
|
|
|
|
// We prune the proxy list prior to invoking each filter. This may be
|
|
// somewhat inefficient, but it seems like a good idea since we want each
|
|
// filter to "see" a valid proxy list.
|
|
PruneProxyInfo(info, list);
|
|
|
|
if (filterLink->filter) {
|
|
nsCOMPtr<nsIURI> uri;
|
|
Unused << GetProxyURI(channel, getter_AddRefs(uri));
|
|
if (!uri) {
|
|
return false;
|
|
}
|
|
|
|
rv = filterLink->filter->ApplyFilter(uri, list, callback);
|
|
return NS_SUCCEEDED(rv);
|
|
}
|
|
|
|
if (filterLink->channelFilter) {
|
|
rv = filterLink->channelFilter->ApplyFilter(channel, list, callback);
|
|
return NS_SUCCEEDED(rv);
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
void nsProtocolProxyService::PruneProxyInfo(const nsProtocolInfo& info,
|
|
nsIProxyInfo** list) {
|
|
if (!*list) return;
|
|
|
|
LOG(("nsProtocolProxyService::PruneProxyInfo ENTER list=%p", *list));
|
|
|
|
nsProxyInfo* head = nullptr;
|
|
CallQueryInterface(*list, &head);
|
|
if (!head) {
|
|
MOZ_ASSERT_UNREACHABLE("nsIProxyInfo must QI to nsProxyInfo");
|
|
return;
|
|
}
|
|
NS_RELEASE(*list);
|
|
|
|
// Pruning of disabled proxies works like this:
|
|
// - If all proxies are disabled, return the full list
|
|
// - Otherwise, remove the disabled proxies.
|
|
//
|
|
// Pruning of disallowed proxies works like this:
|
|
// - If the protocol handler disallows the proxy, then we disallow it.
|
|
|
|
// Start by removing all disallowed proxies if required:
|
|
if (!(info.flags & nsIProtocolHandler::ALLOWS_PROXY_HTTP)) {
|
|
nsProxyInfo *last = nullptr, *iter = head;
|
|
while (iter) {
|
|
if ((iter->Type() == kProxyType_HTTP) ||
|
|
(iter->Type() == kProxyType_HTTPS)) {
|
|
// reject!
|
|
if (last) {
|
|
last->mNext = iter->mNext;
|
|
} else {
|
|
head = iter->mNext;
|
|
}
|
|
nsProxyInfo* next = iter->mNext;
|
|
iter->mNext = nullptr;
|
|
iter->Release();
|
|
iter = next;
|
|
} else {
|
|
last = iter;
|
|
iter = iter->mNext;
|
|
}
|
|
}
|
|
if (!head) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
// Scan to see if all remaining non-direct proxies are disabled. If so, then
|
|
// we'll just bail and return them all. Otherwise, we'll go and prune the
|
|
// disabled ones.
|
|
|
|
bool allNonDirectProxiesDisabled = true;
|
|
|
|
nsProxyInfo* iter;
|
|
for (iter = head; iter; iter = iter->mNext) {
|
|
if (!IsProxyDisabled(iter) && iter->mType != kProxyType_DIRECT) {
|
|
allNonDirectProxiesDisabled = false;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (allNonDirectProxiesDisabled &&
|
|
StaticPrefs::network_proxy_retry_failed_proxies()) {
|
|
LOG(("All proxies are disabled, so trying all again"));
|
|
} else {
|
|
// remove any disabled proxies.
|
|
nsProxyInfo* last = nullptr;
|
|
for (iter = head; iter;) {
|
|
if (IsProxyDisabled(iter)) {
|
|
// reject!
|
|
nsProxyInfo* reject = iter;
|
|
|
|
iter = iter->mNext;
|
|
if (last) {
|
|
last->mNext = iter;
|
|
} else {
|
|
head = iter;
|
|
}
|
|
|
|
reject->mNext = nullptr;
|
|
NS_RELEASE(reject);
|
|
continue;
|
|
}
|
|
|
|
// since we are about to use this proxy, make sure it is not on
|
|
// the disabled proxy list. we'll add it back to that list if
|
|
// we have to (in GetFailoverForProxy).
|
|
//
|
|
// XXX(darin): It might be better to do this as a final pass.
|
|
//
|
|
EnableProxy(iter);
|
|
|
|
last = iter;
|
|
iter = iter->mNext;
|
|
}
|
|
}
|
|
|
|
// if only DIRECT was specified then return no proxy info, and we're done.
|
|
if (head && !head->mNext && head->mType == kProxyType_DIRECT) {
|
|
NS_RELEASE(head);
|
|
}
|
|
|
|
*list = head; // Transfer ownership
|
|
|
|
LOG(("nsProtocolProxyService::PruneProxyInfo LEAVE list=%p", *list));
|
|
}
|
|
|
|
bool nsProtocolProxyService::GetIsPACLoading() {
|
|
return mPACMan && mPACMan->IsLoading();
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsProtocolProxyService::AddProxyConfigCallback(
|
|
nsIProxyConfigChangedCallback* aCallback) {
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
if (!aCallback) {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
|
|
mProxyConfigChangedCallbacks.AppendElement(aCallback);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsProtocolProxyService::RemoveProxyConfigCallback(
|
|
nsIProxyConfigChangedCallback* aCallback) {
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
|
|
mProxyConfigChangedCallbacks.RemoveElement(aCallback);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsProtocolProxyService::NotifyProxyConfigChangedInternal() {
|
|
LOG(("nsProtocolProxyService::NotifyProxyConfigChangedInternal"));
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
|
|
for (const auto& callback : mProxyConfigChangedCallbacks) {
|
|
callback->OnProxyConfigChanged();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
} // namespace net
|
|
} // namespace mozilla
|