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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 "AddonPathService.h"
#include "amIAddonManager.h"
#include "nsIURI.h"
#include "nsXULAppAPI.h"
#include "jsapi.h"
#include "nsServiceManagerUtils.h"
#include "nsLiteralString.h"
#include "nsThreadUtils.h"
#include "nsIIOService.h"
#include "nsNetUtil.h"
#include "nsIFileURL.h"
#include "nsIResProtocolHandler.h"
#include "nsIChromeRegistry.h"
#include "nsIJARURI.h"
#include "nsJSUtils.h"
#include "mozilla/dom/ScriptSettings.h"
#include "mozilla/dom/ToJSValue.h"
#include "mozilla/AddonPathService.h"
#include "mozilla/Omnijar.h"
#include <algorithm>
namespace mozilla {
struct PathEntryComparator
{
typedef AddonPathService::PathEntry PathEntry;
bool Equals(const PathEntry& entry1, const PathEntry& entry2) const
{
return entry1.mPath == entry2.mPath;
}
bool LessThan(const PathEntry& entry1, const PathEntry& entry2) const
{
return entry1.mPath < entry2.mPath;
}
};
AddonPathService::AddonPathService()
{
}
AddonPathService::~AddonPathService()
{
sInstance = nullptr;
}
NS_IMPL_ISUPPORTS(AddonPathService, amIAddonPathService)
AddonPathService *AddonPathService::sInstance;
/* static */ AddonPathService*
AddonPathService::GetInstance()
{
if (!sInstance) {
sInstance = new AddonPathService();
}
NS_ADDREF(sInstance);
return sInstance;
}
static JSAddonId*
ConvertAddonId(const nsAString& addonIdString)
{
AutoSafeJSContext cx;
JS::RootedValue strv(cx);
if (!mozilla::dom::ToJSValue(cx, addonIdString, &strv)) {
return nullptr;
}
JS::RootedString str(cx, strv.toString());
return JS::NewAddonId(cx, str);
}
JSAddonId*
AddonPathService::Find(const nsAString& path)
{
// Use binary search to find the nearest entry that is <= |path|.
PathEntryComparator comparator;
unsigned index = mPaths.IndexOfFirstElementGt(PathEntry(path, nullptr), comparator);
if (index == 0) {
return nullptr;
}
const PathEntry& entry = mPaths[index - 1];
// Return the entry's addon if its path is a prefix of |path|.
if (StringBeginsWith(path, entry.mPath)) {
return entry.mAddonId;
}
return nullptr;
}
NS_IMETHODIMP
AddonPathService::FindAddonId(const nsAString& path, nsAString& addonIdString)
{
if (JSAddonId* id = Find(path)) {
JSFlatString* flat = JS_ASSERT_STRING_IS_FLAT(JS::StringOfAddonId(id));
AssignJSFlatString(addonIdString, flat);
}
return NS_OK;
}
/* static */ JSAddonId*
AddonPathService::FindAddonId(const nsAString& path)
{
// If no service has been created, then we're not going to find anything.
if (!sInstance) {
return nullptr;
}
return sInstance->Find(path);
}
NS_IMETHODIMP
AddonPathService::InsertPath(const nsAString& path, const nsAString& addonIdString)
{
JSAddonId* addonId = ConvertAddonId(addonIdString);
// Add the new path in sorted order.
PathEntryComparator comparator;
mPaths.InsertElementSorted(PathEntry(path, addonId), comparator);
return NS_OK;
}
static nsresult
ResolveURI(nsIURI* aURI, nsAString& out)
{
bool equals;
nsresult rv;
nsCOMPtr<nsIURI> uri;
nsAutoCString spec;
// Resolve resource:// URIs. At the end of this if/else block, we
// have both spec and uri variables identifying the same URI.
if (NS_SUCCEEDED(aURI->SchemeIs("resource", &equals)) && equals) {
nsCOMPtr<nsIIOService> ioService = do_GetIOService(&rv);
if (NS_WARN_IF(NS_FAILED(rv)))
return rv;
nsCOMPtr<nsIProtocolHandler> ph;
rv = ioService->GetProtocolHandler("resource", getter_AddRefs(ph));
if (NS_WARN_IF(NS_FAILED(rv)))
return rv;
nsCOMPtr<nsIResProtocolHandler> irph(do_QueryInterface(ph, &rv));
if (NS_WARN_IF(NS_FAILED(rv)))
return rv;
rv = irph->ResolveURI(aURI, spec);
if (NS_WARN_IF(NS_FAILED(rv)))
return rv;
rv = ioService->NewURI(spec, nullptr, nullptr, getter_AddRefs(uri));
if (NS_WARN_IF(NS_FAILED(rv)))
return rv;
} else if (NS_SUCCEEDED(aURI->SchemeIs("chrome", &equals)) && equals) {
nsCOMPtr<nsIChromeRegistry> chromeReg =
mozilla::services::GetChromeRegistryService();
if (NS_WARN_IF(!chromeReg))
return NS_ERROR_UNEXPECTED;
rv = chromeReg->ConvertChromeURL(aURI, getter_AddRefs(uri));
if (NS_WARN_IF(NS_FAILED(rv)))
return rv;
} else {
uri = aURI;
}
if (NS_SUCCEEDED(uri->SchemeIs("jar", &equals)) && equals) {
nsCOMPtr<nsIJARURI> jarURI = do_QueryInterface(uri, &rv);
if (NS_WARN_IF(NS_FAILED(rv)))
return rv;
nsCOMPtr<nsIURI> jarFileURI;
rv = jarURI->GetJARFile(getter_AddRefs(jarFileURI));
if (NS_WARN_IF(NS_FAILED(rv)))
return rv;
return ResolveURI(jarFileURI, out);
}
if (NS_SUCCEEDED(uri->SchemeIs("file", &equals)) && equals) {
nsCOMPtr<nsIFileURL> baseFileURL = do_QueryInterface(uri, &rv);
if (NS_WARN_IF(NS_FAILED(rv)))
return rv;
nsCOMPtr<nsIFile> file;
rv = baseFileURL->GetFile(getter_AddRefs(file));
if (NS_WARN_IF(NS_FAILED(rv)))
return rv;
return file->GetPath(out);
}
return NS_ERROR_FAILURE;
}
JSAddonId*
MapURIToAddonID(nsIURI* aURI)
{
if (!NS_IsMainThread() || !XRE_IsParentProcess()) {
return nullptr;
}
nsAutoString filePath;
nsresult rv = ResolveURI(aURI, filePath);
if (NS_FAILED(rv))
return nullptr;
nsCOMPtr<nsIFile> greJar = Omnijar::GetPath(Omnijar::GRE);
nsCOMPtr<nsIFile> appJar = Omnijar::GetPath(Omnijar::APP);
if (greJar && appJar) {
nsAutoString greJarString, appJarString;
if (NS_FAILED(greJar->GetPath(greJarString)) || NS_FAILED(appJar->GetPath(appJarString)))
return nullptr;
// If |aURI| is part of either Omnijar, then it can't be part of an
// add-on. This catches pretty much all URLs for Firefox content.
if (filePath.Equals(greJarString) || filePath.Equals(appJarString))
return nullptr;
}
// If it's not part of Firefox, we resort to binary searching through the
// add-on paths.
return AddonPathService::FindAddonId(filePath);
}
}
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