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firefox/toolkit/system/gnome/nsGIOService.cpp
Daniel Baumann 5e9a113729
Adding upstream version 140.0. 
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
2025-06-25 09:37:52 +02:00

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/* -*- Mode: C++; tab-width: 2; 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 "nsGIOService.h"
#include "nsString.h"
#include "nsIURI.h"
#include "nsIFile.h"
#include "nsTArray.h"
#include "nsStringEnumerator.h"
#include "nsIMIMEInfo.h"
#include "nsComponentManagerUtils.h"
#include "nsArray.h"
#include "nsPrintfCString.h"
#include "mozilla/GRefPtr.h"
#include "mozilla/GUniquePtr.h"
#include "mozilla/UniquePtrExtensions.h"
#include "mozilla/WidgetUtilsGtk.h"
#include "mozilla/ScopeExit.h"
#include "mozilla/StaticPrefs_widget.h"
#include "mozilla/net/DNS.h"
#include "prenv.h"
#include <gio/gio.h>
#include <gtk/gtk.h>
#include <gio/gdesktopappinfo.h>
#ifdef MOZ_ENABLE_DBUS
# include <fcntl.h>
# include <dlfcn.h>
# include "mozilla/widget/AsyncDBus.h"
# include "mozilla/WidgetUtilsGtk.h"
#endif
using namespace mozilla;
#ifdef MOZ_LOGGING
# include "mozilla/Logging.h"
LazyLogModule gGIOServiceLog("GIOService");
# define LOG(...) \
MOZ_LOG(gGIOServiceLog, mozilla::LogLevel::Debug, (__VA_ARGS__))
#else
# define LOG(...)
#endif /* MOZ_LOGGING */
class nsFlatpakHandlerApp : public nsIHandlerApp {
public:
NS_DECL_ISUPPORTS
NS_DECL_NSIHANDLERAPP
nsFlatpakHandlerApp() = default;
private:
virtual ~nsFlatpakHandlerApp() = default;
};
NS_IMPL_ISUPPORTS(nsFlatpakHandlerApp, nsIHandlerApp)
NS_IMETHODIMP
nsFlatpakHandlerApp::GetName(nsAString& aName) {
aName.AssignLiteral("System Handler");
return NS_OK;
}
NS_IMETHODIMP
nsFlatpakHandlerApp::SetName(const nsAString& aName) {
// We don't implement SetName because flatpak system handler name is fixed
return NS_OK;
}
NS_IMETHODIMP
nsFlatpakHandlerApp::GetDetailedDescription(nsAString& aDetailedDescription) {
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsFlatpakHandlerApp::SetDetailedDescription(
const nsAString& aDetailedDescription) {
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsFlatpakHandlerApp::Equals(nsIHandlerApp* aHandlerApp, bool* _retval) {
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsFlatpakHandlerApp::LaunchWithURI(
nsIURI* aUri, mozilla::dom::BrowsingContext* aBrowsingContext) {
nsCString spec;
aUri->GetSpec(spec);
GUniquePtr<GError> error;
// The TMPDIR where files are downloaded when user choose to open them
// needs to be accessible from sandbox and host. The default settings
// TMPDIR=/tmp is accessible only to the sandbox. That can be the reason
// why the gtk_show_uri fails there.
// The workaround is to set TMPDIR environment variable in sandbox to
// $XDG_CACHE_HOME/tmp before executing Firefox.
gtk_show_uri(nullptr, spec.get(), GDK_CURRENT_TIME, getter_Transfers(error));
if (error) {
NS_WARNING(
nsPrintfCString("Cannot launch flatpak handler: %s", error->message)
.get());
return NS_ERROR_FAILURE;
}
return NS_OK;
}
/**
* Get command without any additional arguments
* @param aCommandWithArguments full commandline input string
* @param aCommand string for storing command without arguments
* @return NS_ERROR_FAILURE when unable to parse commandline
*/
static nsresult GetCommandFromCommandline(
nsACString const& aCommandWithArguments, nsACString& aCommand) {
GUniquePtr<GError> error;
gchar** argv = nullptr;
if (!g_shell_parse_argv(aCommandWithArguments.BeginReading(), nullptr, &argv,
getter_Transfers(error)) ||
!argv[0]) {
g_warning("Cannot parse command with arguments: %s", error->message);
g_strfreev(argv);
return NS_ERROR_FAILURE;
}
aCommand.Assign(argv[0]);
g_strfreev(argv);
return NS_OK;
}
class nsGIOHandlerApp final : public nsIGIOHandlerApp {
public:
NS_DECL_ISUPPORTS
NS_DECL_NSIHANDLERAPP
NS_DECL_NSIGIOHANDLERAPP
explicit nsGIOHandlerApp(already_AddRefed<GAppInfo> aApp) : mApp(aApp) {}
private:
~nsGIOHandlerApp() = default;
RefPtr<GAppInfo> mApp;
};
NS_IMPL_ISUPPORTS(nsGIOHandlerApp, nsIGIOHandlerApp, nsIHandlerApp)
NS_IMETHODIMP
nsGIOHandlerApp::GetId(nsACString& aId) {
aId.Assign(g_app_info_get_id(mApp));
return NS_OK;
}
NS_IMETHODIMP
nsGIOHandlerApp::GetName(nsAString& aName) {
aName.Assign(NS_ConvertUTF8toUTF16(g_app_info_get_name(mApp)));
return NS_OK;
}
NS_IMETHODIMP
nsGIOHandlerApp::SetName(const nsAString& aName) {
// We don't implement SetName because we're using mGIOMimeApp instance for
// obtaining application name
return NS_OK;
}
NS_IMETHODIMP
nsGIOHandlerApp::GetDetailedDescription(nsAString& aDetailedDescription) {
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsGIOHandlerApp::SetDetailedDescription(const nsAString& aDetailedDescription) {
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsGIOHandlerApp::Equals(nsIHandlerApp* aHandlerApp, bool* _retval) {
// Compare with nsIGIOMimeApp instance by command with stripped arguments
nsCOMPtr<nsIGIOHandlerApp> gioMimeApp = do_QueryInterface(aHandlerApp);
*_retval = false;
if (!gioMimeApp) {
return NS_OK;
}
nsAutoCString thisId;
nsresult rv = GetId(thisId);
NS_ENSURE_SUCCESS(rv, rv);
nsAutoCString theirId;
gioMimeApp->GetId(theirId);
NS_ENSURE_SUCCESS(rv, rv);
*_retval = thisId.Equals(theirId);
return NS_OK;
}
NS_IMETHODIMP
nsGIOHandlerApp::LaunchFile(const nsACString& aFileName) {
GFile* gfile = g_file_new_for_path(PromiseFlatCString(aFileName).get());
GList* fileList = nullptr;
fileList = g_list_append(fileList, gfile);
bool retval = g_app_info_launch(mApp, fileList, nullptr, nullptr);
g_list_foreach(fileList, (GFunc)g_object_unref, nullptr);
g_list_free(fileList);
return retval ? NS_OK : NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsGIOHandlerApp::LaunchWithURI(
nsIURI* aUri, mozilla::dom::BrowsingContext* aBrowsingContext) {
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsGIOHandlerApp::GetMozIconURL(nsACString& _retval) {
GIcon* icon = g_app_info_get_icon(mApp);
_retval.Assign(g_icon_to_string(icon));
return NS_OK;
}
class nsGIOMimeApp final : public nsIGIOMimeApp {
public:
NS_DECL_ISUPPORTS
NS_DECL_NSIHANDLERAPP
NS_DECL_NSIGIOMIMEAPP
explicit nsGIOMimeApp(already_AddRefed<GAppInfo> aApp) : mApp(aApp) {}
private:
~nsGIOMimeApp() = default;
RefPtr<GAppInfo> mApp;
};
NS_IMPL_ISUPPORTS(nsGIOMimeApp, nsIGIOMimeApp, nsIHandlerApp)
NS_IMETHODIMP
nsGIOMimeApp::GetId(nsACString& aId) {
aId.Assign(g_app_info_get_id(mApp));
return NS_OK;
}
NS_IMETHODIMP
nsGIOMimeApp::GetName(nsAString& aName) {
aName.Assign(NS_ConvertUTF8toUTF16(g_app_info_get_name(mApp)));
return NS_OK;
}
NS_IMETHODIMP
nsGIOMimeApp::SetName(const nsAString& aName) {
// We don't implement SetName because we're using mGIOMimeApp instance for
// obtaining application name
return NS_OK;
}
NS_IMETHODIMP
nsGIOMimeApp::GetCommand(nsACString& aCommand) {
const char* cmd = g_app_info_get_commandline(mApp);
if (!cmd) return NS_ERROR_FAILURE;
aCommand.Assign(cmd);
return NS_OK;
}
NS_IMETHODIMP
nsGIOMimeApp::GetExpectsURIs(int32_t* aExpects) {
*aExpects = g_app_info_supports_uris(mApp);
return NS_OK;
}
NS_IMETHODIMP
nsGIOMimeApp::GetDetailedDescription(nsAString& aDetailedDescription) {
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsGIOMimeApp::SetDetailedDescription(const nsAString& aDetailedDescription) {
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsGIOMimeApp::Equals(nsIHandlerApp* aHandlerApp, bool* _retval) {
if (!aHandlerApp) return NS_ERROR_FAILURE;
// Compare with nsILocalHandlerApp instance by name
nsCOMPtr<nsILocalHandlerApp> localHandlerApp = do_QueryInterface(aHandlerApp);
if (localHandlerApp) {
nsAutoString theirName;
nsAutoString thisName;
GetName(thisName);
localHandlerApp->GetName(theirName);
*_retval = thisName.Equals(theirName);
return NS_OK;
}
// Compare with nsIGIOMimeApp instance by command with stripped arguments
nsCOMPtr<nsIGIOMimeApp> gioMimeApp = do_QueryInterface(aHandlerApp);
if (gioMimeApp) {
nsAutoCString thisCommandline, thisCommand;
nsresult rv = GetCommand(thisCommandline);
NS_ENSURE_SUCCESS(rv, rv);
rv = GetCommandFromCommandline(thisCommandline, thisCommand);
NS_ENSURE_SUCCESS(rv, rv);
nsAutoCString theirCommandline, theirCommand;
gioMimeApp->GetCommand(theirCommandline);
NS_ENSURE_SUCCESS(rv, rv);
rv = GetCommandFromCommandline(theirCommandline, theirCommand);
NS_ENSURE_SUCCESS(rv, rv);
*_retval = thisCommand.Equals(theirCommand);
return NS_OK;
}
// We can only compare with nsILocalHandlerApp and nsGIOMimeApp
*_retval = false;
return NS_OK;
}
static RefPtr<GAppLaunchContext> GetLaunchContext(
const char* aXDGToken = nullptr) {
RefPtr<GAppLaunchContext> context = dont_AddRef(g_app_launch_context_new());
// Unset this before launching third-party MIME handlers. Otherwise, if
// Thunderbird sets this in its startup script (as it does in Debian and
// Fedora), and Firefox does not set this in its startup script (it doesn't in
// Debian), then Firefox will think it is part of Thunderbird and try to make
// Thunderbird the default browser. See bug 1494436.
g_app_launch_context_unsetenv(context, "MOZ_APP_LAUNCHER");
if (aXDGToken) {
g_app_launch_context_setenv(context, "XDG_ACTIVATION_TOKEN", aXDGToken);
}
return context;
}
#ifdef __OpenBSD__
// wrappers required for OpenBSD sandboxing with unveil()
gboolean g_app_info_launch_uris_openbsd(GAppInfo* mApp, const char* uri,
GAppLaunchContext* context,
GError** error) {
gchar* path = g_filename_from_uri(uri, NULL, NULL);
auto releasePath = MakeScopeExit([&] { g_free(path); });
const gchar* bin = g_app_info_get_executable(mApp);
if (!bin) {
g_set_error(error, G_IO_ERROR, G_IO_ERROR_FAILED,
"no executable found for %s, maybe not unveiled ?",
g_app_info_get_name(mApp));
return FALSE;
}
g_debug("spawning %s %s for %s", bin, path, uri);
const gchar* const argv[] = {bin, path, NULL};
GSpawnFlags flags =
static_cast<GSpawnFlags>(G_SPAWN_SEARCH_PATH | G_SPAWN_DO_NOT_REAP_CHILD);
gboolean result =
g_spawn_async(NULL, (char**)argv, NULL, flags, NULL, NULL, NULL, error);
if (!result) {
g_warning("Cannot launch application %s with arg %s: %s", bin, path,
(*error)->message);
return FALSE;
}
return TRUE;
}
gboolean g_app_info_launch_default_for_uri_openbsd(const char* uri,
GAppLaunchContext* context,
GError** error) {
gboolean result_uncertain;
gchar* path = g_filename_from_uri(uri, NULL, NULL);
gchar* content_type = g_content_type_guess(path, NULL, 0, &result_uncertain);
gchar* scheme = g_uri_parse_scheme(uri);
auto release = MakeScopeExit([&] {
g_free(path);
g_free(content_type);
g_free(scheme);
});
if (g_strcmp0(scheme, "http") == 0 || g_strcmp0(scheme, "https") == 0)
return g_app_info_launch_default_for_uri(uri, context, error);
if (content_type != NULL && !result_uncertain) {
g_debug("content type for %s: %s", uri, content_type);
GAppInfo* app_info = g_app_info_get_default_for_type(content_type, false);
auto releaseAppInfo = MakeScopeExit([&] {
if (app_info) g_object_unref(app_info);
});
if (!app_info) {
g_set_error(error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Could not find default handler for content type %s",
content_type);
return FALSE;
} else {
return g_app_info_launch_uris_openbsd(app_info, uri, context, error);
}
} else {
g_set_error(error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Could not find content type for URI: %s", uri);
return FALSE;
}
}
#endif
static NS_IMETHODIMP LaunchWithURIImpl(RefPtr<GAppInfo> aInfo, nsIURI* aUri,
const char* aXDGToken = nullptr) {
GList uris = {0};
nsCString spec;
aUri->GetSpec(spec);
// nsPromiseFlatCString flatUri(aUri);
uris.data = const_cast<char*>(spec.get());
GUniquePtr<GError> error;
#ifdef __OpenBSD__
gboolean result = g_app_info_launch_uris_openbsd(
aInfo, spec.get(), GetLaunchContext(aXDGToken).get(),
getter_Transfers(error));
#else
gboolean result = g_app_info_launch_uris(
aInfo, &uris, GetLaunchContext(aXDGToken).get(), getter_Transfers(error));
#endif
if (!result) {
g_warning("Cannot launch application: %s", error->message);
return NS_ERROR_FAILURE;
}
return NS_OK;
}
NS_IMETHODIMP
nsGIOMimeApp::LaunchWithURI(nsIURI* aUri,
mozilla::dom::BrowsingContext* aBrowsingContext) {
auto promise = mozilla::widget::RequestWaylandFocusPromise();
if (!promise) {
return LaunchWithURIImpl(mApp, aUri);
}
promise->Then(
GetMainThreadSerialEventTarget(), __func__,
/* resolve */
[app = RefPtr{mApp}, uri = RefPtr{aUri}](nsCString token) {
LaunchWithURIImpl(app, uri, token.get());
},
/* reject */
[app = RefPtr{mApp}, uri = RefPtr{aUri}](bool state) {
LaunchWithURIImpl(app, uri);
});
return NS_OK;
}
class GIOUTF8StringEnumerator final : public nsStringEnumeratorBase {
~GIOUTF8StringEnumerator() = default;
public:
GIOUTF8StringEnumerator() : mIndex(0) {}
NS_DECL_ISUPPORTS
NS_DECL_NSIUTF8STRINGENUMERATOR
using nsStringEnumeratorBase::GetNext;
nsTArray<nsCString> mStrings;
uint32_t mIndex;
};
NS_IMPL_ISUPPORTS(GIOUTF8StringEnumerator, nsIUTF8StringEnumerator,
nsIStringEnumerator)
NS_IMETHODIMP
GIOUTF8StringEnumerator::HasMore(bool* aResult) {
*aResult = mIndex < mStrings.Length();
return NS_OK;
}
NS_IMETHODIMP
GIOUTF8StringEnumerator::GetNext(nsACString& aResult) {
if (mIndex >= mStrings.Length()) return NS_ERROR_UNEXPECTED;
aResult.Assign(mStrings[mIndex]);
++mIndex;
return NS_OK;
}
NS_IMETHODIMP
nsGIOMimeApp::GetSupportedURISchemes(nsIUTF8StringEnumerator** aSchemes) {
*aSchemes = nullptr;
RefPtr<GIOUTF8StringEnumerator> array = new GIOUTF8StringEnumerator();
GVfs* gvfs = g_vfs_get_default();
if (!gvfs) {
g_warning("Cannot get GVfs object.");
return NS_ERROR_OUT_OF_MEMORY;
}
const gchar* const* uri_schemes = g_vfs_get_supported_uri_schemes(gvfs);
while (*uri_schemes != nullptr) {
// XXX(Bug 1631371) Check if this should use a fallible operation as it
// pretended earlier.
array->mStrings.AppendElement(*uri_schemes);
uri_schemes++;
}
array.forget(aSchemes);
return NS_OK;
}
NS_IMETHODIMP
nsGIOMimeApp::SetAsDefaultForMimeType(nsACString const& aMimeType) {
GUniquePtr<char> content_type(
g_content_type_from_mime_type(PromiseFlatCString(aMimeType).get()));
if (!content_type) return NS_ERROR_FAILURE;
GUniquePtr<GError> error;
g_app_info_set_as_default_for_type(mApp, content_type.get(),
getter_Transfers(error));
if (error) {
g_warning("Cannot set application as default for MIME type (%s): %s",
PromiseFlatCString(aMimeType).get(), error->message);
return NS_ERROR_FAILURE;
}
return NS_OK;
}
/**
* Set default application for files with given extensions
* @param fileExts string of space separated extensions
* @return NS_OK when application was set as default for given extensions,
* NS_ERROR_FAILURE otherwise
*/
NS_IMETHODIMP
nsGIOMimeApp::SetAsDefaultForFileExtensions(nsACString const& fileExts) {
GUniquePtr<GError> error;
GUniquePtr<char> extensions(g_strdup(PromiseFlatCString(fileExts).get()));
char* ext_pos = extensions.get();
char* space_pos;
while ((space_pos = strchr(ext_pos, ' ')) || (*ext_pos != '\0')) {
if (space_pos) {
*space_pos = '\0';
}
g_app_info_set_as_default_for_extension(mApp, ext_pos,
getter_Transfers(error));
if (error) {
g_warning("Cannot set application as default for extension (%s): %s",
ext_pos, error->message);
return NS_ERROR_FAILURE;
}
if (space_pos) {
ext_pos = space_pos + 1;
} else {
*ext_pos = '\0';
}
}
return NS_OK;
}
/**
* Set default application for URI's of a particular scheme
* @param aURIScheme string containing the URI scheme
* @return NS_OK when application was set as default for URI scheme,
* NS_ERROR_FAILURE otherwise
*/
NS_IMETHODIMP
nsGIOMimeApp::SetAsDefaultForURIScheme(nsACString const& aURIScheme) {
GUniquePtr<GError> error;
nsAutoCString contentType("x-scheme-handler/");
contentType.Append(aURIScheme);
g_app_info_set_as_default_for_type(mApp, contentType.get(),
getter_Transfers(error));
if (error) {
g_warning("Cannot set application as default for URI scheme (%s): %s",
PromiseFlatCString(aURIScheme).get(), error->message);
return NS_ERROR_FAILURE;
}
// Its consistent with the way `gio mime x-scheme-handler/contentType
// some.desktop` registers mime types to also add the registered application
// to the list of supported applications for the handler.
g_app_info_set_as_last_used_for_type(mApp, contentType.get(),
getter_Transfers(error));
if (error) {
g_warning("Cannot register as compatible URI scheme handler for %s: %s",
PromiseFlatCString(aURIScheme).get(), error->message);
return NS_ERROR_FAILURE;
}
return NS_OK;
}
NS_IMPL_ISUPPORTS(nsGIOService, nsIGIOService)
NS_IMETHODIMP
nsGIOService::GetMimeTypeFromExtension(const nsACString& aExtension,
nsACString& aMimeType) {
nsAutoCString fileExtToUse("file.");
fileExtToUse.Append(aExtension);
gboolean result_uncertain;
GUniquePtr<char> content_type(
g_content_type_guess(fileExtToUse.get(), nullptr, 0, &result_uncertain));
if (!content_type) {
return NS_ERROR_FAILURE;
}
GUniquePtr<char> mime_type(g_content_type_get_mime_type(content_type.get()));
if (!mime_type) {
return NS_ERROR_FAILURE;
}
aMimeType.Assign(mime_type.get());
return NS_OK;
}
// used in nsGNOMERegistry
// -----------------------------------------------------------------------------
#define OPENURI_BUS_NAME "org.freedesktop.portal.Desktop"
#define OPENURI_OBJECT_PATH "/org/freedesktop/portal/desktop"
#define OPENURI_INTERFACE_NAME "org.freedesktop.portal.OpenURI"
#define SCHEME_SUPPORTED_METHOD "SchemeSupported"
NS_IMETHODIMP
nsGIOService::GetAppForURIScheme(const nsACString& aURIScheme,
nsIHandlerApp** aApp) {
*aApp = nullptr;
// Application in flatpak sandbox does not have access to the list
// of installed applications on the system. We use SchemeSupported
// method to check if the URI scheme is supported and then use
// generic nsFlatpakHandlerApp which forwards launch call to the system.
if (widget::ShouldUsePortal(widget::PortalKind::MimeHandler)) {
if (mozilla::net::IsLoopbackHostname(aURIScheme)) {
// When the user writes foo:1234, we try to handle it natively using
// GetAppForURIScheme, and if that fails, we carry on. On flatpak there's
// no way to know if an app has handlers or not. Some things like
// localhost:1234 are really unlikely to be handled by native
// apps, and we're much better off returning an error here instead.
return NS_ERROR_FAILURE;
}
GUniquePtr<GError> error;
RefPtr<GDBusProxy> proxy = dont_AddRef(g_dbus_proxy_new_for_bus_sync(
G_BUS_TYPE_SESSION, G_DBUS_PROXY_FLAGS_NONE, nullptr, OPENURI_BUS_NAME,
OPENURI_OBJECT_PATH, OPENURI_INTERFACE_NAME,
nullptr, // cancellable
getter_Transfers(error)));
if (error) {
g_warning("Failed to create proxy: %s\n", error->message);
return NS_ERROR_FAILURE;
}
// Construct the dictionary of options (empty in current implementaiton)
GVariantBuilder builder;
g_variant_builder_init(&builder, G_VARIANT_TYPE_VARDICT);
RefPtr<GVariant> result = dont_AddRef(g_dbus_proxy_call_sync(
proxy, SCHEME_SUPPORTED_METHOD,
g_variant_new("(sa{sv})", PromiseFlatCString(aURIScheme).get(),
&builder),
G_DBUS_CALL_FLAGS_NONE,
-1, // timeout
nullptr, // cancellable
getter_Transfers(error)));
if (error) {
if (error->code == G_DBUS_ERROR_UNKNOWN_METHOD) {
// The method "SchemeSupported" not available, seems like we're running
// older portal. Be optimistic about supported scheme handler
LOG("SchemeSupported method not found, fallback to flatpak handler");
RefPtr<nsFlatpakHandlerApp> mozApp = new nsFlatpakHandlerApp();
mozApp.forget(aApp);
return NS_OK;
}
g_warning("Failed to call SchemeSupported method: %s\n", error->message);
return NS_ERROR_FAILURE;
}
gboolean supported;
g_variant_get(result, "(b)", &supported);
if (!supported) {
LOG("Scheme '%s' is NOT supported.\n",
PromiseFlatCString(aURIScheme).get());
return NS_ERROR_FAILURE;
}
LOG("Scheme '%s' is supported.\n", PromiseFlatCString(aURIScheme).get());
RefPtr<nsFlatpakHandlerApp> mozApp = new nsFlatpakHandlerApp();
mozApp.forget(aApp);
return NS_OK;
}
RefPtr<GAppInfo> app_info = dont_AddRef(g_app_info_get_default_for_uri_scheme(
PromiseFlatCString(aURIScheme).get()));
if (!app_info) {
return NS_ERROR_FAILURE;
}
RefPtr<nsGIOMimeApp> mozApp = new nsGIOMimeApp(app_info.forget());
mozApp.forget(aApp);
return NS_OK;
}
NS_IMETHODIMP
nsGIOService::GetAppsForURIScheme(const nsACString& aURIScheme,
nsIMutableArray** aResult) {
// We don't need to return the nsFlatpakHandlerApp here because
// it would be skipped by the callers anyway.
// The preferred handler is provided by GetAppForURIScheme.
// This method returns all possible application handlers
// including preferred one. The callers skips the preferred
// handler in this list to avoid duplicate records in the list
// they create.
nsCOMPtr<nsIMutableArray> handlersArray =
do_CreateInstance(NS_ARRAY_CONTRACTID);
nsAutoCString contentType("x-scheme-handler/");
contentType.Append(aURIScheme);
GList* appInfoList = g_app_info_get_all_for_type(contentType.get());
// g_app_info_get_all_for_type returns NULL when no appinfo is found
// or error occurs (contentType is NULL). We are fine with empty app list
// and we're sure that contentType is not NULL, so we won't return failure.
if (appInfoList) {
GList* appInfo = appInfoList;
while (appInfo) {
nsCOMPtr<nsIGIOMimeApp> mimeApp =
new nsGIOMimeApp(dont_AddRef(G_APP_INFO(appInfo->data)));
handlersArray->AppendElement(mimeApp);
appInfo = appInfo->next;
}
g_list_free(appInfoList);
}
handlersArray.forget(aResult);
return NS_OK;
}
NS_IMETHODIMP
nsGIOService::GetAppForMimeType(const nsACString& aMimeType,
nsIHandlerApp** aApp) {
*aApp = nullptr;
// Flatpak does not reveal installed application to the sandbox,
// we need to create generic system handler.
if (widget::ShouldUsePortal(widget::PortalKind::MimeHandler)) {
RefPtr<nsFlatpakHandlerApp> mozApp = new nsFlatpakHandlerApp();
mozApp.forget(aApp);
return NS_OK;
}
GUniquePtr<char> content_type(
g_content_type_from_mime_type(PromiseFlatCString(aMimeType).get()));
if (!content_type) {
return NS_ERROR_FAILURE;
}
// GIO returns "unknown" appinfo for the application/octet-stream, which is
// useless. It's better to fallback to create appinfo from file extension
// later.
if (g_content_type_is_unknown(content_type.get())) {
return NS_ERROR_NOT_AVAILABLE;
}
RefPtr<GAppInfo> app_info =
dont_AddRef(g_app_info_get_default_for_type(content_type.get(), false));
if (!app_info) {
return NS_ERROR_FAILURE;
}
#ifdef __OpenBSD__
char* t;
t = g_find_program_in_path(g_app_info_get_executable(app_info));
if (t != nullptr) {
g_debug("%s is registered as handler for %s, binary available as %s",
g_app_info_get_executable(app_info), content_type.get(), t);
} else {
g_warning(
"%s is registered as handler for %s but not available in PATH "
"(missing unveil ?)",
g_app_info_get_executable(app_info), content_type.get());
}
#endif
RefPtr<nsGIOMimeApp> mozApp = new nsGIOMimeApp(app_info.forget());
mozApp.forget(aApp);
return NS_OK;
}
NS_IMETHODIMP
nsGIOService::GetDescriptionForMimeType(const nsACString& aMimeType,
nsACString& aDescription) {
GUniquePtr<char> content_type(
g_content_type_from_mime_type(PromiseFlatCString(aMimeType).get()));
if (!content_type) {
return NS_ERROR_FAILURE;
}
GUniquePtr<char> desc(g_content_type_get_description(content_type.get()));
if (!desc) {
return NS_ERROR_FAILURE;
}
aDescription.Assign(desc.get());
return NS_OK;
}
static nsresult ShowURIImpl(nsIURI* aURI, const char* aXDGToken = nullptr) {
nsAutoCString spec;
MOZ_TRY(aURI->GetSpec(spec));
GUniquePtr<GError> error;
#ifdef __OpenBSD__
if (!g_app_info_launch_default_for_uri_openbsd(
spec.get(), GetLaunchContext(aXDGToken).get(),
#else
if (!g_app_info_launch_default_for_uri(spec.get(),
GetLaunchContext(aXDGToken).get(),
#endif
getter_Transfers(error))) {
g_warning("Could not launch default application for URI: %s",
error->message);
return NS_ERROR_FAILURE;
}
return NS_OK;
}
nsresult nsGIOService::ShowURI(nsIURI* aURI) {
auto promise = mozilla::widget::RequestWaylandFocusPromise();
if (!promise) {
return ShowURIImpl(aURI);
}
promise->Then(
GetMainThreadSerialEventTarget(), __func__,
/* resolve */
[uri = RefPtr{aURI}](nsCString token) { ShowURIImpl(uri, token.get()); },
/* reject */
[uri = RefPtr{aURI}](bool state) { ShowURIImpl(uri); });
return NS_OK;
}
static nsresult LaunchPathImpl(const nsACString& aPath,
const char* aXDGToken = nullptr) {
RefPtr<GFile> file = dont_AddRef(
g_file_new_for_commandline_arg(PromiseFlatCString(aPath).get()));
GUniquePtr<char> spec(g_file_get_uri(file));
GUniquePtr<GError> error;
#ifdef __OpenBSD__
g_app_info_launch_default_for_uri_openbsd(spec.get(),
GetLaunchContext(aXDGToken).get(),
#else
g_app_info_launch_default_for_uri(spec.get(),
GetLaunchContext(aXDGToken).get(),
#endif
getter_Transfers(error));
if (error) {
g_warning("Cannot launch default application: %s", error->message);
return NS_ERROR_FAILURE;
}
return NS_OK;
}
static nsresult LaunchPath(const nsACString& aPath) {
auto promise = mozilla::widget::RequestWaylandFocusPromise();
if (!promise) {
return LaunchPathImpl(aPath);
}
promise->Then(
GetMainThreadSerialEventTarget(), __func__,
/* resolve */
[path = nsCString{aPath}](nsCString token) {
LaunchPathImpl(path, token.get());
},
/* reject */
[path = nsCString{aPath}](bool state) { LaunchPathImpl(path); });
return NS_OK;
}
nsresult nsGIOService::LaunchFile(const nsACString& aPath) {
return LaunchPath(aPath);
}
nsresult nsGIOService::GetIsRunningUnderFlatpak(bool* aResult) {
*aResult = mozilla::widget::IsRunningUnderFlatpak();
return NS_OK;
}
nsresult nsGIOService::GetIsRunningUnderSnap(bool* aResult) {
*aResult = mozilla::widget::IsRunningUnderSnap();
return NS_OK;
}
static nsresult RevealDirectory(nsIFile* aFile, bool aForce) {
nsAutoCString path;
if (bool isDir; NS_SUCCEEDED(aFile->IsDirectory(&isDir)) && isDir) {
MOZ_TRY(aFile->GetNativePath(path));
return LaunchPath(path);
}
if (!aForce) {
return NS_ERROR_FAILURE;
}
nsCOMPtr<nsIFile> parentDir;
MOZ_TRY(aFile->GetParent(getter_AddRefs(parentDir)));
MOZ_TRY(parentDir->GetNativePath(path));
return LaunchPath(path);
}
#ifdef MOZ_ENABLE_DBUS
// Classic DBus
const char kFreedesktopFileManagerName[] = "org.freedesktop.FileManager1";
const char kFreedesktopFileManagerPath[] = "/org/freedesktop/FileManager1";
const char kMethodShowItems[] = "ShowItems";
// Portal for Snap, Flatpak
const char kFreedesktopPortalName[] = "org.freedesktop.portal.Desktop";
const char kFreedesktopPortalPath[] = "/org/freedesktop/portal/desktop";
const char kFreedesktopPortalOpenURI[] = "org.freedesktop.portal.OpenURI";
const char kMethodOpenDirectory[] = "OpenDirectory";
static nsresult RevealFileViaDBusWithProxy(GDBusProxy* aProxy, nsIFile* aFile,
const char* aMethod) {
nsAutoCString path;
MOZ_TRY(aFile->GetNativePath(path));
RefPtr<mozilla::widget::DBusCallPromise> dbusPromise;
const char* startupId = "";
const int32_t timeout =
StaticPrefs::widget_gtk_file_manager_show_items_timeout_ms();
if (!(strcmp(aMethod, kMethodOpenDirectory) == 0)) {
GUniquePtr<gchar> uri(g_filename_to_uri(path.get(), nullptr, nullptr));
if (!uri) {
RevealDirectory(aFile, /* aForce = */ true);
return NS_ERROR_FAILURE;
}
GVariantBuilder builder;
g_variant_builder_init(&builder, G_VARIANT_TYPE_STRING_ARRAY);
g_variant_builder_add(&builder, "s", uri.get());
RefPtr<GVariant> variant = dont_AddRef(
g_variant_ref_sink(g_variant_new("(ass)", &builder, startupId)));
g_variant_builder_clear(&builder);
dbusPromise = widget::DBusProxyCall(aProxy, aMethod, variant,
G_DBUS_CALL_FLAGS_NONE, timeout);
} else {
int fd = open(path.get(), O_RDONLY | O_CLOEXEC);
if (fd < 0) {
g_printerr("Failed to open file: %s returned %d\n", path.get(), errno);
RevealDirectory(aFile, /* aForce = */ true);
return NS_ERROR_FAILURE;
}
GVariantBuilder options;
g_variant_builder_init(&options, G_VARIANT_TYPE_VARDICT);
static auto g_unix_fd_list_new_from_array =
(GUnixFDList * (*)(const gint* fds, gint n_fds))
dlsym(RTLD_DEFAULT, "g_unix_fd_list_new_from_array");
// Will take ownership of the fd, so we dont have to care about it anymore
RefPtr<GUnixFDList> fd_list =
dont_AddRef(g_unix_fd_list_new_from_array(&fd, 1));
RefPtr<GVariant> variant = dont_AddRef(
g_variant_ref_sink(g_variant_new("(sha{sv})", startupId, 0, &options)));
g_variant_builder_clear(&options);
dbusPromise = widget::DBusProxyCallWithUnixFDList(
aProxy, aMethod, variant, G_DBUS_CALL_FLAGS_NONE, timeout, fd_list);
}
dbusPromise->Then(
GetCurrentSerialEventTarget(), __func__,
[](RefPtr<GVariant>&& aResult) {
// Do nothing, file is shown, we're done.
},
[file = RefPtr{aFile}, aMethod](GUniquePtr<GError>&& aError) {
g_printerr("Failed to query file manager via %s: %s\n", aMethod,
aError->message);
RevealDirectory(file, /* aForce = */ true);
});
return NS_OK;
}
static void RevealFileViaDBus(nsIFile* aFile, const char* aName,
const char* aPath, const char* aCall,
const char* aMethod) {
widget::CreateDBusProxyForBus(
G_BUS_TYPE_SESSION,
GDBusProxyFlags(G_DBUS_PROXY_FLAGS_DO_NOT_CONNECT_SIGNALS |
G_DBUS_PROXY_FLAGS_DO_NOT_LOAD_PROPERTIES),
/* aInterfaceInfo = */ nullptr, aName, aPath, aCall)
->Then(
GetCurrentSerialEventTarget(), __func__,
[file = RefPtr{aFile}, aMethod](RefPtr<GDBusProxy>&& aProxy) {
RevealFileViaDBusWithProxy(aProxy.get(), file, aMethod);
},
[file = RefPtr{aFile}, aName](GUniquePtr<GError>&& aError) {
g_printerr("Failed to create DBUS proxy for %s: %s\n", aName,
aError->message);
RevealDirectory(file, /* aForce = */ true);
});
}
static void RevealFileViaDBusClassic(nsIFile* aFile) {
RevealFileViaDBus(aFile, kFreedesktopFileManagerName,
kFreedesktopFileManagerPath, kFreedesktopFileManagerName,
kMethodShowItems);
}
static void RevealFileViaDBusPortal(nsIFile* aFile) {
RevealFileViaDBus(aFile, kFreedesktopPortalName, kFreedesktopPortalPath,
kFreedesktopPortalOpenURI, kMethodOpenDirectory);
}
#endif
nsresult nsGIOService::RevealFile(nsIFile* aFile) {
#ifdef MOZ_ENABLE_DBUS
if (ShouldUsePortal(widget::PortalKind::OpenUri)) {
RevealFileViaDBusPortal(aFile);
} else if (NS_SUCCEEDED(RevealDirectory(aFile, /* aForce = */ false))) {
return NS_OK;
} else {
RevealFileViaDBusClassic(aFile);
}
return NS_OK;
#else
return RevealDirectory(aFile, /* aForce = */ true);
#endif
}
/**
* Find GIO Mime App from given commandline.
* This is different from CreateAppFromCommand because instead of creating the
* GIO Mime App in case it's not found in the GIO application list, the method
* returns error.
* @param aCmd command with parameters used to start the application
* @return NS_OK when application is found, NS_ERROR_NOT_AVAILABLE otherwise
*/
NS_IMETHODIMP
nsGIOService::FindAppFromCommand(nsACString const& aCmd,
nsIGIOMimeApp** aAppInfo) {
RefPtr<GAppInfo> app_info;
GList* apps = g_app_info_get_all();
// Try to find relevant and existing GAppInfo in all installed application
// We do this by comparing each GAppInfo's executable with out own
for (GList* node = apps; node; node = node->next) {
RefPtr<GAppInfo> app_info_from_list = dont_AddRef((GAppInfo*)node->data);
node->data = nullptr;
if (!app_info) {
// If the executable is not absolute, get it's full path
GUniquePtr<char> executable(g_find_program_in_path(
g_app_info_get_executable(app_info_from_list)));
if (executable &&
strcmp(executable.get(), PromiseFlatCString(aCmd).get()) == 0) {
app_info = std::move(app_info_from_list);
// Can't break here because we need to keep iterating to unref the other
// nodes.
}
}
}
g_list_free(apps);
if (!app_info) {
*aAppInfo = nullptr;
return NS_ERROR_NOT_AVAILABLE;
}
RefPtr<nsGIOMimeApp> app = new nsGIOMimeApp(app_info.forget());
app.forget(aAppInfo);
return NS_OK;
}
/**
* Create GIOHandlerApp specified by application id. The id is the basename
* of the desktop file including the .desktop extension. For example:
* org.mozilla.firefox.desktop
*/
NS_IMETHODIMP
nsGIOService::CreateHandlerAppFromAppId(const char* aAppId,
nsIGIOHandlerApp** aResult) {
RefPtr<GAppInfo> appInfo =
dont_AddRef((GAppInfo*)g_desktop_app_info_new(aAppId));
if (!appInfo) {
g_warning("Appinfo not found for: %s", aAppId);
return NS_ERROR_FAILURE;
}
nsCOMPtr<nsIGIOHandlerApp> mozApp = new nsGIOHandlerApp(appInfo.forget());
mozApp.forget(aResult);
return NS_OK;
}
/**
* Create application info for specified command and application name.
* Command arguments are ignored and the "%u" is always added.
* @param cmd command to execute
* @param appName application name
* @param appInfo location where created GAppInfo is stored
* @return NS_OK when object is created, NS_ERROR_FILE_NOT_FOUND when executable
* is not found in the system path or NS_ERROR_FAILURE otherwise.
*/
NS_IMETHODIMP
nsGIOService::CreateAppFromCommand(nsACString const& cmd,
nsACString const& appName,
nsIGIOMimeApp** appInfo) {
*appInfo = nullptr;
// Using G_APP_INFO_CREATE_SUPPORTS_URIS calling
// g_app_info_create_from_commandline appends %u to the cmd even when cmd
// already contains this parameter. To avoid that we're going to remove
// arguments before passing to it.
nsAutoCString commandWithoutArgs;
nsresult rv = GetCommandFromCommandline(cmd, commandWithoutArgs);
NS_ENSURE_SUCCESS(rv, rv);
GUniquePtr<GError> error;
RefPtr<GAppInfo> app_info = dont_AddRef(g_app_info_create_from_commandline(
commandWithoutArgs.BeginReading(), PromiseFlatCString(appName).get(),
G_APP_INFO_CREATE_SUPPORTS_URIS, getter_Transfers(error)));
if (!app_info) {
g_warning("Cannot create application info from command: %s",
error->message);
return NS_ERROR_FAILURE;
}
// Check if executable exist in path
GUniquePtr<gchar> executableWithFullPath(
g_find_program_in_path(commandWithoutArgs.BeginReading()));
if (!executableWithFullPath) {
return NS_ERROR_FILE_NOT_FOUND;
}
RefPtr<nsGIOMimeApp> mozApp = new nsGIOMimeApp(app_info.forget());
mozApp.forget(appInfo);
return NS_OK;
}
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