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-rw-r--r--netwerk/base/nsProtocolProxyService.cpp2146
1 files changed, 2146 insertions, 0 deletions
diff --git a/netwerk/base/nsProtocolProxyService.cpp b/netwerk/base/nsProtocolProxyService.cpp
new file mode 100644
index 000000000..26eca0e88
--- /dev/null
+++ b/netwerk/base/nsProtocolProxyService.cpp
@@ -0,0 +1,2146 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* vim:set ts=4 sw=4 sts=4 et: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/ArrayUtils.h"
+#include "mozilla/Attributes.h"
+
+#include "nsProtocolProxyService.h"
+#include "nsProxyInfo.h"
+#include "nsIClassInfoImpl.h"
+#include "nsIIOService.h"
+#include "nsIObserverService.h"
+#include "nsIProtocolHandler.h"
+#include "nsIProtocolProxyCallback.h"
+#include "nsIChannel.h"
+#include "nsICancelable.h"
+#include "nsIDNSService.h"
+#include "nsPIDNSService.h"
+#include "nsIScriptSecurityManager.h"
+#include "nsIPrefService.h"
+#include "nsIPrefBranch.h"
+#include "nsThreadUtils.h"
+#include "nsSOCKSIOLayer.h"
+#include "nsString.h"
+#include "nsNetUtil.h"
+#include "nsNetCID.h"
+#include "plstr.h"
+#include "prnetdb.h"
+#include "nsPACMan.h"
+#include "nsProxyRelease.h"
+#include "mozilla/Mutex.h"
+#include "mozilla/CondVar.h"
+#include "nsISystemProxySettings.h"
+#include "nsINetworkLinkService.h"
+#include "nsIHttpChannelInternal.h"
+#include "mozilla/Logging.h"
+#include "mozilla/Tokenizer.h"
+
+//----------------------------------------------------------------------------
+
+namespace mozilla {
+namespace net {
+
+ extern const char kProxyType_HTTP[];
+ extern const char kProxyType_HTTPS[];
+ extern const char kProxyType_SOCKS[];
+ extern const char kProxyType_SOCKS4[];
+ extern const char kProxyType_SOCKS5[];
+ extern const char kProxyType_DIRECT[];
+
+#undef LOG
+#define LOG(args) MOZ_LOG(gProxyLog, LogLevel::Debug, args)
+
+//----------------------------------------------------------------------------
+
+#define PROXY_PREF_BRANCH "network.proxy"
+#define PROXY_PREF(x) PROXY_PREF_BRANCH "." x
+
+#define WPAD_URL "http://wpad/wpad.dat"
+
+//----------------------------------------------------------------------------
+
+// This structure is intended to be allocated on the stack
+struct nsProtocolInfo {
+ nsAutoCString scheme;
+ uint32_t flags;
+ int32_t defaultPort;
+};
+
+//----------------------------------------------------------------------------
+
+// Return the channel's proxy URI, or if it doesn't exist, the
+// channel's main URI.
+static nsresult
+GetProxyURI(nsIChannel *channel, nsIURI **aOut)
+{
+ nsresult rv = NS_OK;
+ nsCOMPtr<nsIURI> proxyURI;
+ nsCOMPtr<nsIHttpChannelInternal> httpChannel(do_QueryInterface(channel));
+ if (httpChannel) {
+ rv = httpChannel->GetProxyURI(getter_AddRefs(proxyURI));
+ }
+ if (!proxyURI) {
+ rv = channel->GetURI(getter_AddRefs(proxyURI));
+ }
+ if (NS_FAILED(rv)) {
+ return rv;
+ }
+ proxyURI.forget(aOut);
+ return NS_OK;
+}
+
+//-----------------------------------------------------------------------------
+
+// The nsPACManCallback portion of this implementation should be run
+// on the main thread - so call nsPACMan::AsyncGetProxyForURI() with
+// a true mainThreadResponse parameter.
+class nsAsyncResolveRequest final : public nsIRunnable
+ , public nsPACManCallback
+ , public nsICancelable
+{
+public:
+ NS_DECL_THREADSAFE_ISUPPORTS
+
+ nsAsyncResolveRequest(nsProtocolProxyService *pps, nsIChannel *channel,
+ uint32_t aResolveFlags,
+ nsIProtocolProxyCallback *callback)
+ : mStatus(NS_OK)
+ , mDispatched(false)
+ , mResolveFlags(aResolveFlags)
+ , mPPS(pps)
+ , mXPComPPS(pps)
+ , mChannel(channel)
+ , mCallback(callback)
+ {
+ NS_ASSERTION(mCallback, "null callback");
+ }
+
+private:
+ ~nsAsyncResolveRequest()
+ {
+ if (!NS_IsMainThread()) {
+ // these xpcom pointers might need to be proxied back to the
+ // main thread to delete safely, but if this request had its
+ // callbacks called normally they will all be null and this is a nop
+
+ if (mChannel) {
+ NS_ReleaseOnMainThread(mChannel.forget());
+ }
+
+ if (mCallback) {
+ NS_ReleaseOnMainThread(mCallback.forget());
+ }
+
+ if (mProxyInfo) {
+ NS_ReleaseOnMainThread(mProxyInfo.forget());
+ }
+
+ if (mXPComPPS) {
+ NS_ReleaseOnMainThread(mXPComPPS.forget());
+ }
+ }
+ }
+
+public:
+ void SetResult(nsresult status, nsIProxyInfo *pi)
+ {
+ mStatus = status;
+ mProxyInfo = pi;
+ }
+
+ NS_IMETHOD Run() override
+ {
+ if (mCallback)
+ DoCallback();
+ return NS_OK;
+ }
+
+ NS_IMETHOD Cancel(nsresult reason) override
+ {
+ NS_ENSURE_ARG(NS_FAILED(reason));
+
+ // If we've already called DoCallback then, nothing more to do.
+ if (!mCallback)
+ return NS_OK;
+
+ SetResult(reason, nullptr);
+ return DispatchCallback();
+ }
+
+ nsresult DispatchCallback()
+ {
+ if (mDispatched) // Only need to dispatch once
+ return NS_OK;
+
+ nsresult rv = NS_DispatchToCurrentThread(this);
+ if (NS_FAILED(rv))
+ NS_WARNING("unable to dispatch callback event");
+ else {
+ mDispatched = true;
+ return NS_OK;
+ }
+
+ mCallback = nullptr; // break possible reference cycle
+ return rv;
+ }
+
+private:
+
+ // Called asynchronously, so we do not need to post another PLEvent
+ // before calling DoCallback.
+ void OnQueryComplete(nsresult status,
+ const nsCString &pacString,
+ const nsCString &newPACURL) override
+ {
+ // If we've already called DoCallback then, nothing more to do.
+ if (!mCallback)
+ return;
+
+ // Provided we haven't been canceled...
+ if (mStatus == NS_OK) {
+ mStatus = status;
+ mPACString = pacString;
+ mPACURL = newPACURL;
+ }
+
+ // In the cancelation case, we may still have another PLEvent in
+ // the queue that wants to call DoCallback. No need to wait for
+ // it, just run the callback now.
+ DoCallback();
+ }
+
+ void DoCallback()
+ {
+ bool pacAvailable = true;
+ if (mStatus == NS_ERROR_NOT_AVAILABLE && !mProxyInfo) {
+ // If the PAC service is not avail (e.g. failed pac load
+ // or shutdown) then we will be going direct. Make that
+ // mapping now so that any filters are still applied.
+ mPACString = NS_LITERAL_CSTRING("DIRECT;");
+ mStatus = NS_OK;
+
+ LOG(("pac not available, use DIRECT\n"));
+ pacAvailable = false;
+ }
+
+ // Generate proxy info from the PAC string if appropriate
+ if (NS_SUCCEEDED(mStatus) && !mProxyInfo && !mPACString.IsEmpty()) {
+ mPPS->ProcessPACString(mPACString, mResolveFlags,
+ getter_AddRefs(mProxyInfo));
+ nsCOMPtr<nsIURI> proxyURI;
+ GetProxyURI(mChannel, getter_AddRefs(proxyURI));
+
+ // Now apply proxy filters
+ nsProtocolInfo info;
+ mStatus = mPPS->GetProtocolInfo(proxyURI, &info);
+ if (NS_SUCCEEDED(mStatus))
+ mPPS->ApplyFilters(mChannel, info, mProxyInfo);
+ else
+ mProxyInfo = nullptr;
+
+ if(pacAvailable) {
+ // if !pacAvailable, it was already logged above
+ LOG(("pac thread callback %s\n", mPACString.get()));
+ }
+ if (NS_SUCCEEDED(mStatus))
+ mPPS->MaybeDisableDNSPrefetch(mProxyInfo);
+ mCallback->OnProxyAvailable(this, mChannel, mProxyInfo, mStatus);
+ }
+ else if (NS_SUCCEEDED(mStatus) && !mPACURL.IsEmpty()) {
+ LOG(("pac thread callback indicates new pac file load\n"));
+
+ nsCOMPtr<nsIURI> proxyURI;
+ GetProxyURI(mChannel, getter_AddRefs(proxyURI));
+
+ // trigger load of new pac url
+ nsresult rv = mPPS->ConfigureFromPAC(mPACURL, false);
+ if (NS_SUCCEEDED(rv)) {
+ // now that the load is triggered, we can resubmit the query
+ RefPtr<nsAsyncResolveRequest> newRequest =
+ new nsAsyncResolveRequest(mPPS, mChannel, mResolveFlags,
+ mCallback);
+ rv = mPPS->mPACMan->AsyncGetProxyForURI(proxyURI,
+ newRequest,
+ true);
+ }
+
+ if (NS_FAILED(rv))
+ mCallback->OnProxyAvailable(this, mChannel, nullptr, rv);
+
+ // do not call onproxyavailable() in SUCCESS case - the newRequest will
+ // take care of that
+ }
+ else {
+ LOG(("pac thread callback did not provide information %X\n", mStatus));
+ if (NS_SUCCEEDED(mStatus))
+ mPPS->MaybeDisableDNSPrefetch(mProxyInfo);
+ mCallback->OnProxyAvailable(this, mChannel, mProxyInfo, mStatus);
+ }
+
+ // We are on the main thread now and don't need these any more so
+ // release them to avoid having to proxy them back to the main thread
+ // in the dtor
+ mCallback = nullptr; // in case the callback holds an owning ref to us
+ mPPS = nullptr;
+ mXPComPPS = nullptr;
+ mChannel = nullptr;
+ mProxyInfo = nullptr;
+ }
+
+private:
+
+ nsresult mStatus;
+ nsCString mPACString;
+ nsCString mPACURL;
+ bool mDispatched;
+ uint32_t mResolveFlags;
+
+ nsProtocolProxyService *mPPS;
+ nsCOMPtr<nsIProtocolProxyService> mXPComPPS;
+ nsCOMPtr<nsIChannel> mChannel;
+ nsCOMPtr<nsIProtocolProxyCallback> mCallback;
+ nsCOMPtr<nsIProxyInfo> mProxyInfo;
+};
+
+NS_IMPL_ISUPPORTS(nsAsyncResolveRequest, nsICancelable, nsIRunnable)
+
+//----------------------------------------------------------------------------
+
+#define IS_ASCII_SPACE(_c) ((_c) == ' ' || (_c) == '\t')
+
+//
+// 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]) & (~0L << (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]) & (~0L << (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]) & (~0L << (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]) & (~0L << (32 - mask_len)));
+ }
+}
+
+static void
+proxy_GetStringPref(nsIPrefBranch *aPrefBranch,
+ const char *aPref,
+ nsCString &aResult)
+{
+ nsXPIDLCString temp;
+ nsresult rv = aPrefBranch->GetCharPref(aPref, getter_Copies(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)
+if ( aIID.Equals(NS_GET_IID(nsProtocolProxyService)) ) foundInterface = static_cast<nsIProtocolProxyService2*>(this); else
+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()
+ : mFilterLocalHosts(false)
+ , mFilters(nullptr)
+ , mProxyConfig(PROXYCONFIG_DIRECT)
+ , mHTTPProxyPort(-1)
+ , mFTPProxyPort(-1)
+ , mHTTPSProxyPort(-1)
+ , mSOCKSProxyPort(-1)
+ , mSOCKSProxyVersion(4)
+ , mSOCKSProxyRemoteDNS(false)
+ , mProxyOverTLS(true)
+ , mPACMan(nullptr)
+ , mSessionStart(PR_Now())
+ , mFailedProxyTimeout(30 * 60) // 30 minute default
+{
+}
+
+nsProtocolProxyService::~nsProtocolProxyService()
+{
+ // These should have been cleaned up in our Observe method.
+ NS_ASSERTION(mHostFiltersArray.Length() == 0 && mFilters == nullptr &&
+ 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) {
+ nsXPIDLCString pacSpec;
+ prefs->GetCharPref(PROXY_PREF("autoconfig_url"),
+ getter_Copies(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;
+}
+
+
+NS_IMETHODIMP
+nsProtocolProxyService::Observe(nsISupports *aSubject,
+ const char *aTopic,
+ const char16_t *aData)
+{
+ if (strcmp(aTopic, NS_XPCOM_SHUTDOWN_OBSERVER_ID) == 0) {
+ // cleanup
+ if (mHostFiltersArray.Length() > 0) {
+ mHostFiltersArray.Clear();
+ }
+ if (mFilters) {
+ delete mFilters;
+ mFilters = nullptr;
+ }
+ if (mPACMan) {
+ mPACMan->Shutdown();
+ mPACMan = 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)) {
+ 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;
+}
+
+void
+nsProtocolProxyService::PrefsChanged(nsIPrefBranch *prefBranch,
+ const char *pref)
+{
+ nsresult rv = NS_OK;
+ bool reloadPAC = false;
+ nsXPIDLCString tempString;
+
+ if (!pref || !strcmp(pref, PROXY_PREF("type"))) {
+ 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: %lu; 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("ftp")))
+ proxy_GetStringPref(prefBranch, PROXY_PREF("ftp"), mFTPProxyHost);
+
+ if (!pref || !strcmp(pref, PROXY_PREF("ftp_port")))
+ proxy_GetIntPref(prefBranch, PROXY_PREF("ftp_port"), mFTPProxyPort);
+
+ 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 == 5)
+ mSOCKSProxyVersion = 5;
+ else
+ mSOCKSProxyVersion = 4;
+ }
+
+ if (!pref || !strcmp(pref, PROXY_PREF("socks_remote_dns")))
+ proxy_GetBoolPref(prefBranch, PROXY_PREF("socks_remote_dns"),
+ mSOCKSProxyRemoteDNS);
+
+ if (!pref || !strcmp(pref, PROXY_PREF("proxy_over_tls"))) {
+ proxy_GetBoolPref(prefBranch, PROXY_PREF("proxy_over_tls"),
+ mProxyOverTLS);
+ }
+
+ 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"),
+ getter_Copies(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"),
+ getter_Copies(tempString));
+ if (mPACMan && !mPACMan->IsPACURI(tempString)) {
+ LOG(("PAC Thread URI Changed - Reset Pac Thread"));
+ ResetPACThread();
+ }
+ } else if (mProxyConfig == PROXYCONFIG_WPAD) {
+ // We diverge from the WPAD spec here in that we don't walk the
+ // hosts's FQDN, stripping components until we hit a TLD. Doing so
+ // is dangerous in the face of an incomplete list of TLDs, and TLDs
+ // get added over time. We could consider doing only a single
+ // substitution of the first component, if that proves to help
+ // compatibility.
+ tempString.AssignLiteral(WPAD_URL);
+ } else if (mSystemProxySettings) {
+ // Get System Proxy settings if available
+ mSystemProxySettings->GetPACURI(tempString);
+ }
+ if (!tempString.IsEmpty())
+ ConfigureFromPAC(tempString, false);
+ }
+}
+
+bool
+nsProtocolProxyService::CanUseProxy(nsIURI *aURI, int32_t defaultPort)
+{
+ if (mHostFiltersArray.Length() == 0)
+ return true;
+
+ 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('.')) ||
+ host.EqualsLiteral("127.0.0.1") ||
+ host.EqualsLiteral("::1")) {
+ 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())) {
+ HostInfo *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 (!PL_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 (PL_strncasecmp(start, kProxyType_HTTP, 5) == 0) {
+ type = kProxyType_HTTP;
+ }
+ break;
+ case 5:
+ if (PL_strncasecmp(start, kProxyType_PROXY, 5) == 0) {
+ type = kProxyType_HTTP;
+ } else if (PL_strncasecmp(start, kProxyType_SOCKS, 5) == 0) {
+ type = kProxyType_SOCKS4; // assume v4 for 4x compat
+ } else if (PL_strncasecmp(start, kProxyType_HTTPS, 5) == 0) {
+ type = kProxyType_HTTPS;
+ }
+ break;
+ case 6:
+ if (PL_strncasecmp(start, kProxyType_DIRECT, 6) == 0)
+ type = kProxyType_DIRECT;
+ else if (PL_strncasecmp(start, kProxyType_SOCKS4, 6) == 0)
+ type = kProxyType_SOCKS4;
+ else if (PL_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) {
+ const char *host = nullptr, *hostEnd = nullptr;
+ 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 || mSOCKSProxyRemoteDNS)
+ 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;
+ }
+
+ 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;
+ if (NS_SUCCEEDED(NS_NewURI(getter_AddRefs(pacURI), maybeURL)) &&
+ NS_SUCCEEDED(pacURI->GetAsciiHost(urlHost)) &&
+ !urlHost.IsEmpty()) {
+ // http://www.example.com:8080
+
+ pi->mHost = urlHost;
+
+ int32_t tPort;
+ if (NS_SUCCEEDED(pacURI->GetPort(&tPort)) && tPort != -1) {
+ port = tPort;
+ }
+ pi->mPort = port;
+ }
+ else {
+ // www.example.com:8080
+ if (start < end) {
+ host = start;
+ hostEnd = strchr(host, ':');
+ if (!hostEnd || hostEnd > end) {
+ hostEnd = end;
+ // no port, so assume default
+ }
+ else {
+ port = atoi(hostEnd + 1);
+ }
+ }
+ // YES, it is ok to specify a null proxy host.
+ if (host) {
+ pi->mHost.Assign(host, hostEnd - host);
+ pi->mPort = port;
+ }
+ }
+ NS_ADDREF(*result = pi);
+ }
+
+ 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.Put(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()
+{
+ if (mPACMan)
+ return NS_OK;
+
+ mPACMan = new nsPACMan();
+
+ 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 = 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)
+{
+ SetupPACThread();
+
+ if (mPACMan->IsPACURI(spec) && !forceReload)
+ return NS_OK;
+
+ mFailedProxies.Clear();
+
+ 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;
+
+ nsXPIDLCString pacSpec;
+ if (type == PROXYCONFIG_PAC)
+ prefs->GetCharPref(PROXY_PREF("autoconfig_url"), getter_Copies(pacSpec));
+ else if (type == PROXYCONFIG_WPAD)
+ pacSpec.AssignLiteral(WPAD_URL);
+
+ if (!pacSpec.IsEmpty())
+ 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")
+ , mStatus(NS_OK)
+ , mCompleted(false)
+ {
+ }
+
+ void OnQueryComplete(nsresult status,
+ const nsCString &pacString,
+ const nsCString &newPACURL) override
+ {
+ MutexAutoLock lock(mMutex);
+ mCompleted = true;
+ mStatus = status;
+ mPACString = pacString;
+ mPACURL = newPACURL;
+ mCondVar.Notify();
+ }
+
+ void Lock() { mMutex.Lock(); }
+ void Unlock() { mMutex.Unlock(); }
+ void Wait() { mCondVar.Wait(PR_SecondsToInterval(3)); }
+
+private:
+ ~nsAsyncBridgeRequest()
+ {
+ }
+
+ friend class nsProtocolProxyService;
+
+ Mutex mMutex;
+ CondVar mCondVar;
+
+ nsresult mStatus;
+ nsCString mPACString;
+ nsCString mPACURL;
+ bool mCompleted;
+};
+NS_IMPL_ISUPPORTS0(nsAsyncBridgeRequest)
+
+// nsProtocolProxyService
+nsresult
+nsProtocolProxyService::DeprecatedBlockingResolve(nsIChannel *aChannel,
+ uint32_t aFlags,
+ nsIProxyInfo **retval)
+{
+ NS_ENSURE_ARG_POINTER(aChannel);
+
+ nsCOMPtr<nsIURI> uri;
+ nsresult rv = GetProxyURI(aChannel, getter_AddRefs(uri));
+ if (NS_FAILED(rv)) return rv;
+
+ nsProtocolInfo info;
+ rv = GetProtocolInfo(uri, &info);
+ if (NS_FAILED(rv))
+ return rv;
+
+ nsCOMPtr<nsIProxyInfo> pi;
+ bool usePACThread;
+
+ // 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(aChannel, info, aFlags,
+ &usePACThread, getter_AddRefs(pi));
+ if (NS_FAILED(rv))
+ return rv;
+
+ if (!usePACThread || !mPACMan) {
+ ApplyFilters(aChannel, info, pi);
+ pi.forget(retval);
+ return NS_OK;
+ }
+
+ // Use the PAC thread to do the work, so we don't have to reimplement that
+ // code, but block this thread on that completion.
+ RefPtr<nsAsyncBridgeRequest> ctx = new nsAsyncBridgeRequest();
+ ctx->Lock();
+ if (NS_SUCCEEDED(mPACMan->AsyncGetProxyForURI(uri, ctx, false))) {
+ // this can really block the main thread, so cap it at 3 seconds
+ ctx->Wait();
+ }
+ ctx->Unlock();
+ if (!ctx->mCompleted)
+ return NS_ERROR_FAILURE;
+ if (NS_FAILED(ctx->mStatus))
+ return ctx->mStatus;
+
+ // pretty much duplicate real DoCallback logic
+
+ // Generate proxy info from the PAC string if appropriate
+ if (!ctx->mPACString.IsEmpty()) {
+ LOG(("sync pac thread callback %s\n", ctx->mPACString.get()));
+ ProcessPACString(ctx->mPACString, 0, getter_AddRefs(pi));
+ ApplyFilters(aChannel, info, pi);
+ pi.forget(retval);
+ return NS_OK;
+ }
+
+ if (!ctx->mPACURL.IsEmpty()) {
+ NS_WARNING("sync pac thread callback indicates new pac file load\n");
+ // This is a problem and is one of the reasons this blocking interface
+ // is deprecated. The main loop needs to spin to make this reload happen. So
+ // we are going to kick off the reload and return an error - it will work
+ // next time. Because this sync interface is only used in the java plugin it
+ // is extremely likely that the pac file has already been loaded anyhow.
+
+ rv = ConfigureFromPAC(ctx->mPACURL, false);
+ if (NS_FAILED(rv))
+ return rv;
+ return NS_ERROR_NOT_AVAILABLE;
+ }
+
+ *retval = nullptr;
+ return NS_OK;
+}
+
+nsresult
+nsProtocolProxyService::AsyncResolveInternal(nsIChannel *channel, uint32_t flags,
+ nsIProtocolProxyCallback *callback,
+ nsICancelable **result,
+ bool isSyncOK)
+{
+ 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;
+
+ // 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
+ ApplyFilters(channel, info, pi);
+ ctx->SetResult(NS_OK, pi);
+ if (isSyncOK) {
+ ctx->Run();
+ return NS_OK;
+ }
+
+ rv = ctx->DispatchCallback();
+ if (NS_SUCCEEDED(rv))
+ ctx.forget(result);
+ return rv;
+ }
+
+ // else kick off a PAC thread query
+
+ rv = mPACMan->AsyncGetProxyForURI(uri, ctx, true);
+ if (NS_SUCCEEDED(rv))
+ ctx.forget(result);
+ return rv;
+}
+
+// nsIProtocolProxyService
+NS_IMETHODIMP
+nsProtocolProxyService::AsyncResolve2(nsIChannel *channel, uint32_t flags,
+ nsIProtocolProxyCallback *callback,
+ nsICancelable **result)
+{
+ return AsyncResolveInternal(channel, flags, callback, result, true);
+}
+
+NS_IMETHODIMP
+nsProtocolProxyService::AsyncResolve(nsISupports *channelOrURI, uint32_t flags,
+ nsIProtocolProxyCallback *callback,
+ 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;
+ }
+
+ nsCOMPtr<nsIScriptSecurityManager> secMan(
+ do_GetService(NS_SCRIPTSECURITYMANAGER_CONTRACTID, &rv));
+ NS_ENSURE_SUCCESS(rv, rv);
+ nsCOMPtr<nsIPrincipal> systemPrincipal;
+ rv = secMan->GetSystemPrincipal(getter_AddRefs(systemPrincipal));
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ // 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,
+ systemPrincipal,
+ nsILoadInfo::SEC_ALLOW_CROSS_ORIGIN_DATA_IS_NULL,
+ nsIContentPolicy::TYPE_OTHER);
+ NS_ENSURE_SUCCESS(rv, rv);
+ }
+
+ return AsyncResolveInternal(channel, flags, callback, result, false);
+}
+
+NS_IMETHODIMP
+nsProtocolProxyService::NewProxyInfo(const nsACString &aType,
+ const nsACString &aHost,
+ int32_t aPort,
+ uint32_t aFlags,
+ uint32_t aFailoverTimeout,
+ nsIProxyInfo *aFailoverProxy,
+ nsIProxyInfo **aResult)
+{
+ return NewProxyInfoWithAuth(aType, aHost, aPort,
+ EmptyCString(), EmptyCString(),
+ aFlags, aFailoverTimeout,
+ aFailoverProxy, aResult);
+}
+
+NS_IMETHODIMP
+nsProtocolProxyService::NewProxyInfoWithAuth(const nsACString &aType,
+ const nsACString &aHost,
+ int32_t aPort,
+ const nsACString &aUsername,
+ const nsACString &aPassword,
+ 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 (uint32_t i = 0; i < ArrayLength(types); ++i) {
+ if (aType.LowerCaseEqualsASCII(types[i])) {
+ type = types[i];
+ 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,
+ aFlags, aFailoverTimeout,
+ aFailoverProxy, 0, aResult);
+}
+
+NS_IMETHODIMP
+nsProtocolProxyService::GetFailoverForProxy(nsIProxyInfo *aProxy,
+ nsIURI *aURI,
+ nsresult aStatus,
+ nsIProxyInfo **aResult)
+{
+ // We only support failover when a PAC file is configured, either
+ // directly or via system settings
+ if (mProxyConfig != PROXYCONFIG_PAC && mProxyConfig != PROXYCONFIG_WPAD &&
+ mProxyConfig != PROXYCONFIG_SYSTEM)
+ return NS_ERROR_NOT_AVAILABLE;
+
+ // 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.
+ 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));
+
+ NS_ADDREF(*aResult = pi->mNext);
+ return NS_OK;
+}
+
+nsresult
+nsProtocolProxyService::InsertFilterLink(FilterLink *link, uint32_t position)
+{
+ if (!mFilters) {
+ mFilters = link;
+ return NS_OK;
+ }
+
+ // insert into mFilters in sorted order
+ FilterLink *last = nullptr;
+ for (FilterLink *iter = mFilters; iter; iter = iter->next) {
+ if (position < iter->position) {
+ if (last) {
+ link->next = last->next;
+ last->next = link;
+ }
+ else {
+ link->next = mFilters;
+ mFilters = link;
+ }
+ return NS_OK;
+ }
+ last = iter;
+ }
+ // our position is equal to or greater than the last link in the list
+ last->next = link;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsProtocolProxyService::RegisterFilter(nsIProtocolProxyFilter *filter,
+ uint32_t position)
+{
+ UnregisterFilter(filter); // remove this filter if we already have it
+
+ FilterLink *link = new FilterLink(position, filter);
+ if (!link) {
+ return NS_ERROR_OUT_OF_MEMORY;
+ }
+ return InsertFilterLink(link, position);
+}
+
+NS_IMETHODIMP
+nsProtocolProxyService::RegisterChannelFilter(nsIProtocolProxyChannelFilter *channelFilter,
+ uint32_t position)
+{
+ UnregisterChannelFilter(channelFilter); // remove this filter if we already have it
+
+ FilterLink *link = new FilterLink(position, channelFilter);
+ if (!link) {
+ return NS_ERROR_OUT_OF_MEMORY;
+ }
+ return InsertFilterLink(link, position);
+}
+
+nsresult
+nsProtocolProxyService::RemoveFilterLink(nsISupports* givenObject)
+{
+ FilterLink *last = nullptr;
+ for (FilterLink *iter = mFilters; iter; iter = iter->next) {
+ nsCOMPtr<nsISupports> object = do_QueryInterface(iter->filter);
+ nsCOMPtr<nsISupports> object2 = do_QueryInterface(iter->channelFilter);
+ if (object == givenObject || object2 == givenObject) {
+ if (last)
+ last->next = iter->next;
+ else
+ mFilters = iter->next;
+ iter->next = nullptr;
+ delete iter;
+ return NS_OK;
+ }
+ last = iter;
+ }
+
+ // No need to throw an exception in this case.
+ return NS_OK;
+}
+
+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)
+{
+ // check to see the owners flag? /!?/ TODO
+ if (mHostFiltersArray.Length() > 0) {
+ mHostFiltersArray.Clear();
+ }
+
+ if (aFilters.IsEmpty()) {
+ return;
+ }
+
+ //
+ // filter = ( host | domain | ipaddr ["/" mask] ) [":" port]
+ // filters = filter *( "," LWS filter)
+ //
+ // Reset mFilterLocalHosts - will be set to true if "<local>" is in pref string
+ mFilterLocalHosts = false;
+
+ 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;
+ } else if (token.Equals(mozilla::Tokenizer::Token::Char('/'))) {
+ t.Claim(hostStr);
+ t.Record();
+ parsingMask = true;
+ continue;
+ } else 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);
+
+ 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)
+{
+ NS_PRECONDITION(uri, "URI is null");
+ NS_PRECONDITION(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;
+
+ nsCOMPtr<nsIProtocolHandler> handler;
+ rv = ios->GetProtocolHandler(info->scheme.get(), getter_AddRefs(handler));
+ if (NS_FAILED(rv))
+ return rv;
+
+ rv = handler->DoGetProtocolFlags(uri, &info->flags);
+ if (NS_FAILED(rv))
+ return rv;
+
+ rv = handler->GetDefaultPort(&info->defaultPort);
+ return rv;
+}
+
+nsresult
+nsProtocolProxyService::NewProxyInfo_Internal(const char *aType,
+ const nsACString &aHost,
+ int32_t aPort,
+ const nsACString &aUsername,
+ const nsACString &aPassword,
+ 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);
+ }
+
+ nsProxyInfo *proxyInfo = new nsProxyInfo();
+ if (!proxyInfo)
+ return NS_ERROR_OUT_OF_MEMORY;
+
+ 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;
+ failover.swap(proxyInfo->mNext);
+
+ NS_ADDREF(*aResult = proxyInfo);
+ return NS_OK;
+}
+
+nsresult
+nsProtocolProxyService::Resolve_Internal(nsIChannel *channel,
+ const nsProtocolInfo &info,
+ uint32_t flags,
+ bool *usePACThread,
+ nsIProxyInfo **result)
+{
+ NS_ENSURE_ARG_POINTER(channel);
+ nsresult rv = SetupPACThread();
+ if (NS_FAILED(rv))
+ return rv;
+
+ *usePACThread = false;
+ *result = nullptr;
+
+ if (!(info.flags & nsIProtocolHandler::ALLOWS_PROXY))
+ return NS_OK; // Can't proxy this (filters may not override)
+
+ nsCOMPtr<nsIURI> uri;
+ 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;
+
+ 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
+
+ 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);
+
+ // now try the system proxy settings for this particular url
+ if (NS_SUCCEEDED(mSystemProxySettings->
+ GetProxyForURI(spec, scheme, host, port,
+ pacString))) {
+ ProcessPACString(pacString, 0, 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) {
+ // 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;
+ if (mSOCKSProxyVersion == 4)
+ type = kProxyType_SOCKS4;
+ else
+ type = kProxyType_SOCKS;
+ port = mSOCKSProxyPort;
+ if (mSOCKSProxyRemoteDNS)
+ proxyFlags |= nsIProxyInfo::TRANSPARENT_PROXY_RESOLVES_HOST;
+ }
+ 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 (!mFTPProxyHost.IsEmpty() && mFTPProxyPort > 0 &&
+ !(flags & RESOLVE_IGNORE_URI_SCHEME) &&
+ info.scheme.EqualsLiteral("ftp")) {
+ host = &mFTPProxyHost;
+ type = kProxyType_HTTP;
+ port = mFTPProxyPort;
+ }
+ else if (!mSOCKSProxyTarget.IsEmpty() &&
+ (IsHostLocalTarget(mSOCKSProxyTarget) || mSOCKSProxyPort > 0)) {
+ host = &mSOCKSProxyTarget;
+ if (mSOCKSProxyVersion == 4)
+ type = kProxyType_SOCKS4;
+ else
+ type = kProxyType_SOCKS;
+ port = mSOCKSProxyPort;
+ if (mSOCKSProxyRemoteDNS)
+ proxyFlags |= nsIProxyInfo::TRANSPARENT_PROXY_RESOLVES_HOST;
+ }
+
+ if (type) {
+ rv = NewProxyInfo_Internal(type, *host, port,
+ EmptyCString(), EmptyCString(),
+ 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;
+
+ nsCOMPtr<nsIDNSService> dns = do_GetService(NS_DNSSERVICE_CONTRACTID);
+ 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::ApplyFilters(nsIChannel *channel,
+ const nsProtocolInfo &info,
+ nsIProxyInfo **list)
+{
+ if (!(info.flags & nsIProtocolHandler::ALLOWS_PROXY))
+ return;
+
+ // 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.
+
+ nsCOMPtr<nsIProxyInfo> result;
+
+ for (FilterLink *iter = mFilters; iter; iter = iter->next) {
+ PruneProxyInfo(info, list);
+ nsresult rv = NS_OK;
+ if (iter->filter) {
+ nsCOMPtr<nsIURI> uri;
+ rv = GetProxyURI(channel, getter_AddRefs(uri));
+ if (uri) {
+ rv = iter->filter->ApplyFilter(this, uri, *list,
+ getter_AddRefs(result));
+ }
+ } else if (iter->channelFilter) {
+ rv = iter->channelFilter->ApplyFilter(this, channel, *list,
+ getter_AddRefs(result));
+ }
+ if (NS_FAILED(rv))
+ continue;
+ result.swap(*list);
+ }
+
+ PruneProxyInfo(info, list);
+}
+
+void
+nsProtocolProxyService::PruneProxyInfo(const nsProtocolInfo &info,
+ nsIProxyInfo **list)
+{
+ if (!*list)
+ return;
+ nsProxyInfo *head = nullptr;
+ CallQueryInterface(*list, &head);
+ if (!head) {
+ NS_NOTREACHED("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;
+ }
+
+ // Now, scan to see if all remaining proxies are disabled. If so, then
+ // we'll just bail and return them all. Otherwise, we'll go and prune the
+ // disabled ones.
+
+ bool allDisabled = true;
+
+ nsProxyInfo *iter;
+ for (iter = head; iter; iter = iter->mNext) {
+ if (!IsProxyDisabled(iter)) {
+ allDisabled = false;
+ break;
+ }
+ }
+
+ if (allDisabled)
+ 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
+}
+
+} // namespace net
+} // namespace mozilla
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-11 00:10:24 +0000