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/* 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 "nsIDirectoryService.h"
#include "DirectoryProvider.h"
#include "nsIFile.h"
#include "nsISimpleEnumerator.h"
#include "nsIPrefService.h"
#include "nsIPrefBranch.h"
#include "nsArrayEnumerator.h"
#include "nsEnumeratorUtils.h"
#include "nsAppDirectoryServiceDefs.h"
#include "nsDirectoryServiceDefs.h"
#include "nsCategoryManagerUtils.h"
#include "nsComponentManagerUtils.h"
#include "nsCOMArray.h"
#include "nsDirectoryServiceUtils.h"
#include "mozilla/ModuleUtils.h"
#include "nsServiceManagerUtils.h"
#include "nsStringAPI.h"
#include "nsXULAppAPI.h"
#include "nsIPrefLocalizedString.h"
namespace mozilla {
namespace browser {
NS_IMPL_ISUPPORTS(DirectoryProvider,
nsIDirectoryServiceProvider,
nsIDirectoryServiceProvider2)
NS_IMETHODIMP
DirectoryProvider::GetFile(const char *aKey, bool *aPersist, nsIFile* *aResult)
{
return NS_ERROR_FAILURE;
}
static void
AppendFileKey(const char *key, nsIProperties* aDirSvc,
nsCOMArray<nsIFile> &array)
{
nsCOMPtr<nsIFile> file;
nsresult rv = aDirSvc->Get(key, NS_GET_IID(nsIFile), getter_AddRefs(file));
if (NS_FAILED(rv))
return;
bool exists;
rv = file->Exists(&exists);
if (NS_FAILED(rv) || !exists)
return;
array.AppendObject(file);
}
// Appends the distribution-specific search engine directories to the
// array. The directory structure is as follows:
// appdir/
// \- distribution/
// \- searchplugins/
// |- common/
// \- locale/
// |- <locale 1>/
// ...
// \- <locale N>/
// common engines are loaded for all locales. If there is no locale
// directory for the current locale, there is a pref:
// "distribution.searchplugins.defaultLocale"
// which specifies a default locale to use.
static void
AppendDistroSearchDirs(nsIProperties* aDirSvc, nsCOMArray<nsIFile> &array)
{
nsCOMPtr<nsIFile> searchPlugins;
nsresult rv = aDirSvc->Get(XRE_APP_DISTRIBUTION_DIR,
NS_GET_IID(nsIFile),
getter_AddRefs(searchPlugins));
if (NS_FAILED(rv))
return;
searchPlugins->AppendNative(NS_LITERAL_CSTRING("searchplugins"));
bool exists;
rv = searchPlugins->Exists(&exists);
if (NS_FAILED(rv) || !exists)
return;
nsCOMPtr<nsIFile> commonPlugins;
rv = searchPlugins->Clone(getter_AddRefs(commonPlugins));
if (NS_SUCCEEDED(rv)) {
commonPlugins->AppendNative(NS_LITERAL_CSTRING("common"));
rv = commonPlugins->Exists(&exists);
if (NS_SUCCEEDED(rv) && exists)
array.AppendObject(commonPlugins);
}
nsCOMPtr<nsIPrefBranch> prefs(do_GetService(NS_PREFSERVICE_CONTRACTID));
if (prefs) {
nsCOMPtr<nsIFile> localePlugins;
rv = searchPlugins->Clone(getter_AddRefs(localePlugins));
if (NS_FAILED(rv))
return;
localePlugins->AppendNative(NS_LITERAL_CSTRING("locale"));
nsCString locale;
nsCOMPtr<nsIPrefLocalizedString> prefString;
rv = prefs->GetComplexValue("general.useragent.locale",
NS_GET_IID(nsIPrefLocalizedString),
getter_AddRefs(prefString));
if (NS_SUCCEEDED(rv)) {
nsAutoString wLocale;
prefString->GetData(getter_Copies(wLocale));
CopyUTF16toUTF8(wLocale, locale);
} else {
rv = prefs->GetCharPref("general.useragent.locale", getter_Copies(locale));
}
if (NS_SUCCEEDED(rv)) {
nsCOMPtr<nsIFile> curLocalePlugins;
rv = localePlugins->Clone(getter_AddRefs(curLocalePlugins));
if (NS_SUCCEEDED(rv)) {
curLocalePlugins->AppendNative(locale);
rv = curLocalePlugins->Exists(&exists);
if (NS_SUCCEEDED(rv) && exists) {
array.AppendObject(curLocalePlugins);
return; // all done
}
}
}
// we didn't append the locale dir - try the default one
nsCString defLocale;
rv = prefs->GetCharPref("distribution.searchplugins.defaultLocale",
getter_Copies(defLocale));
if (NS_SUCCEEDED(rv)) {
nsCOMPtr<nsIFile> defLocalePlugins;
rv = localePlugins->Clone(getter_AddRefs(defLocalePlugins));
if (NS_SUCCEEDED(rv)) {
defLocalePlugins->AppendNative(defLocale);
rv = defLocalePlugins->Exists(&exists);
if (NS_SUCCEEDED(rv) && exists)
array.AppendObject(defLocalePlugins);
}
}
}
}
NS_IMETHODIMP
DirectoryProvider::GetFiles(const char *aKey, nsISimpleEnumerator* *aResult)
{
nsresult rv;
if (!strcmp(aKey, NS_APP_SEARCH_DIR_LIST)) {
nsCOMPtr<nsIProperties> dirSvc
(do_GetService(NS_DIRECTORY_SERVICE_CONTRACTID));
if (!dirSvc)
return NS_ERROR_FAILURE;
nsCOMArray<nsIFile> baseFiles;
/**
* We want to preserve the following order, since the search service loads
* engines in first-loaded-wins order.
* - extension search plugin locations (prepended below using
* NS_NewUnionEnumerator)
* - distro search plugin locations
* - user search plugin locations (profile)
* - app search plugin location (shipped engines)
*/
AppendDistroSearchDirs(dirSvc, baseFiles);
AppendFileKey(NS_APP_USER_SEARCH_DIR, dirSvc, baseFiles);
AppendFileKey(NS_APP_SEARCH_DIR, dirSvc, baseFiles);
nsCOMPtr<nsISimpleEnumerator> baseEnum;
rv = NS_NewArrayEnumerator(getter_AddRefs(baseEnum), baseFiles);
if (NS_FAILED(rv))
return rv;
nsCOMPtr<nsISimpleEnumerator> list;
rv = dirSvc->Get(XRE_EXTENSIONS_DIR_LIST,
NS_GET_IID(nsISimpleEnumerator), getter_AddRefs(list));
if (NS_FAILED(rv))
return rv;
static char const *const kAppendSPlugins[] = {"searchplugins", nullptr};
nsCOMPtr<nsISimpleEnumerator> extEnum =
new AppendingEnumerator(list, kAppendSPlugins);
if (!extEnum)
return NS_ERROR_OUT_OF_MEMORY;
return NS_NewUnionEnumerator(aResult, extEnum, baseEnum);
}
return NS_ERROR_FAILURE;
}
NS_IMPL_ISUPPORTS(DirectoryProvider::AppendingEnumerator, nsISimpleEnumerator)
NS_IMETHODIMP
DirectoryProvider::AppendingEnumerator::HasMoreElements(bool *aResult)
{
*aResult = mNext ? true : false;
return NS_OK;
}
NS_IMETHODIMP
DirectoryProvider::AppendingEnumerator::GetNext(nsISupports* *aResult)
{
if (aResult)
NS_ADDREF(*aResult = mNext);
mNext = nullptr;
nsresult rv;
// Ignore all errors
bool more;
while (NS_SUCCEEDED(mBase->HasMoreElements(&more)) && more) {
nsCOMPtr<nsISupports> nextbasesupp;
mBase->GetNext(getter_AddRefs(nextbasesupp));
nsCOMPtr<nsIFile> nextbase(do_QueryInterface(nextbasesupp));
if (!nextbase)
continue;
nextbase->Clone(getter_AddRefs(mNext));
if (!mNext)
continue;
char const *const * i = mAppendList;
while (*i) {
mNext->AppendNative(nsDependentCString(*i));
++i;
}
bool exists;
rv = mNext->Exists(&exists);
if (NS_SUCCEEDED(rv) && exists)
break;
mNext = nullptr;
}
return NS_OK;
}
DirectoryProvider::AppendingEnumerator::AppendingEnumerator
(nsISimpleEnumerator* aBase,
char const *const *aAppendList) :
mBase(aBase),
mAppendList(aAppendList)
{
// Initialize mNext to begin.
GetNext(nullptr);
}
} // namespace browser
} // namespace mozilla
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