gecko/toolkit/system/gnome/nsGIOService.cpp
2012-05-21 12:12:37 +01:00

454 lines
12 KiB
C++

/* -*- 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 "nsStringAPI.h"
#include "nsIURI.h"
#include "nsTArray.h"
#include "nsIStringEnumerator.h"
#include "nsAutoPtr.h"
#include <dlfcn.h>
#include <gio/gio.h>
#include <gtk/gtk.h>
typedef const char* (*get_commandline_t)(GAppInfo*);
char *
get_content_type_from_mime_type(const char *mimeType)
{
GList* contentTypes = g_content_types_get_registered();
GList* ct_ptr = contentTypes;
char* foundContentType = NULL;
while (ct_ptr) {
char *mimeTypeFromContentType = g_content_type_get_mime_type((char*)ct_ptr->data);
if (strcmp(mimeTypeFromContentType, mimeType) == 0) {
foundContentType = g_strdup((char*)ct_ptr->data);
g_free(mimeTypeFromContentType);
break;
}
g_free(mimeTypeFromContentType);
ct_ptr = ct_ptr->next;
}
g_list_foreach(contentTypes, (GFunc) g_free, NULL);
g_list_free(contentTypes);
return foundContentType;
}
class nsGIOMimeApp : public nsIGIOMimeApp
{
public:
NS_DECL_ISUPPORTS
NS_DECL_NSIGIOMIMEAPP
nsGIOMimeApp(GAppInfo* aApp) : mApp(aApp) {}
~nsGIOMimeApp() { g_object_unref(mApp); }
private:
GAppInfo *mApp;
};
NS_IMPL_ISUPPORTS1(nsGIOMimeApp, nsIGIOMimeApp)
NS_IMETHODIMP
nsGIOMimeApp::GetId(nsACString& aId)
{
aId.Assign(g_app_info_get_id(mApp));
return NS_OK;
}
NS_IMETHODIMP
nsGIOMimeApp::GetName(nsACString& aName)
{
aName.Assign(g_app_info_get_name(mApp));
return NS_OK;
}
NS_IMETHODIMP
nsGIOMimeApp::GetCommand(nsACString& aCommand)
{
get_commandline_t g_app_info_get_commandline_ptr;
void *libHandle = dlopen("libgio-2.0.so.0", RTLD_LAZY);
if (!libHandle) {
return NS_ERROR_FAILURE;
}
dlerror(); /* clear any existing error */
g_app_info_get_commandline_ptr =
(get_commandline_t) dlsym(libHandle, "g_app_info_get_commandline");
if (dlerror() == NULL) {
const char *cmd = g_app_info_get_commandline_ptr(mApp);
if (!cmd) {
dlclose(libHandle);
return NS_ERROR_FAILURE;
}
aCommand.Assign(cmd);
}
dlclose(libHandle);
return NS_OK;
}
NS_IMETHODIMP
nsGIOMimeApp::GetExpectsURIs(PRInt32* aExpects)
{
*aExpects = g_app_info_supports_uris(mApp);
return NS_OK;
}
NS_IMETHODIMP
nsGIOMimeApp::Launch(const nsACString& aUri)
{
GList uris = { 0 };
PromiseFlatCString flatUri(aUri);
uris.data = const_cast<char*>(flatUri.get());
GError *error = NULL;
gboolean result = g_app_info_launch_uris(mApp, &uris, NULL, &error);
if (!result) {
g_warning("Cannot launch application: %s", error->message);
g_error_free(error);
return NS_ERROR_FAILURE;
}
return NS_OK;
}
class GIOUTF8StringEnumerator : public nsIUTF8StringEnumerator
{
public:
GIOUTF8StringEnumerator() : mIndex(0) { }
~GIOUTF8StringEnumerator() { }
NS_DECL_ISUPPORTS
NS_DECL_NSIUTF8STRINGENUMERATOR
nsTArray<nsCString> mStrings;
PRUint32 mIndex;
};
NS_IMPL_ISUPPORTS1(GIOUTF8StringEnumerator, nsIUTF8StringEnumerator)
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 = nsnull;
nsRefPtr<GIOUTF8StringEnumerator> array = new GIOUTF8StringEnumerator();
NS_ENSURE_TRUE(array, NS_ERROR_OUT_OF_MEMORY);
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 != NULL) {
if (!array->mStrings.AppendElement(*uri_schemes)) {
return NS_ERROR_OUT_OF_MEMORY;
}
uri_schemes++;
}
NS_ADDREF(*aSchemes = array);
return NS_OK;
}
NS_IMETHODIMP
nsGIOMimeApp::SetAsDefaultForMimeType(nsACString const& aMimeType)
{
char *content_type =
get_content_type_from_mime_type(PromiseFlatCString(aMimeType).get());
if (!content_type)
return NS_ERROR_FAILURE;
GError *error = NULL;
g_app_info_set_as_default_for_type(mApp,
content_type,
&error);
if (error) {
g_warning("Cannot set application as default for MIME type (%s): %s",
PromiseFlatCString(aMimeType).get(),
error->message);
g_error_free(error);
g_free(content_type);
return NS_ERROR_FAILURE;
}
g_free(content_type);
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)
{
GError *error = NULL;
char *extensions = g_strdup(PromiseFlatCString(fileExts).get());
char *ext_pos = extensions;
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, &error);
if (error) {
g_warning("Cannot set application as default for extension (%s): %s",
ext_pos,
error->message);
g_error_free(error);
g_free(extensions);
return NS_ERROR_FAILURE;
}
if (space_pos) {
ext_pos = space_pos + 1;
} else {
*ext_pos = '\0';
}
}
g_free(extensions);
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)
{
GError *error = NULL;
nsCAutoString contentType("x-scheme-handler/");
contentType.Append(aURIScheme);
g_app_info_set_as_default_for_type(mApp,
contentType.get(),
&error);
if (error) {
g_warning("Cannot set application as default for URI scheme (%s): %s",
PromiseFlatCString(aURIScheme).get(),
error->message);
g_error_free(error);
return NS_ERROR_FAILURE;
}
return NS_OK;
}
NS_IMPL_ISUPPORTS1(nsGIOService, nsIGIOService)
NS_IMETHODIMP
nsGIOService::GetMimeTypeFromExtension(const nsACString& aExtension,
nsACString& aMimeType)
{
nsCAutoString fileExtToUse("file.");
fileExtToUse.Append(aExtension);
gboolean result_uncertain;
char *content_type = g_content_type_guess(fileExtToUse.get(),
NULL,
0,
&result_uncertain);
if (!content_type)
return NS_ERROR_FAILURE;
char *mime_type = g_content_type_get_mime_type(content_type);
if (!mime_type) {
g_free(content_type);
return NS_ERROR_FAILURE;
}
aMimeType.Assign(mime_type);
g_free(mime_type);
g_free(content_type);
return NS_OK;
}
// used in nsGNOMERegistry
// -----------------------------------------------------------------------------
NS_IMETHODIMP
nsGIOService::GetAppForURIScheme(const nsACString& aURIScheme,
nsIGIOMimeApp** aApp)
{
*aApp = nsnull;
GAppInfo *app_info = g_app_info_get_default_for_uri_scheme(
PromiseFlatCString(aURIScheme).get());
if (app_info) {
nsGIOMimeApp *mozApp = new nsGIOMimeApp(app_info);
NS_ADDREF(*aApp = mozApp);
} else {
return NS_ERROR_FAILURE;
}
return NS_OK;
}
NS_IMETHODIMP
nsGIOService::GetAppForMimeType(const nsACString& aMimeType,
nsIGIOMimeApp** aApp)
{
*aApp = nsnull;
char *content_type =
get_content_type_from_mime_type(PromiseFlatCString(aMimeType).get());
if (!content_type)
return NS_ERROR_FAILURE;
GAppInfo *app_info = g_app_info_get_default_for_type(content_type, false);
if (app_info) {
nsGIOMimeApp *mozApp = new nsGIOMimeApp(app_info);
NS_ENSURE_TRUE(mozApp, NS_ERROR_OUT_OF_MEMORY);
NS_ADDREF(*aApp = mozApp);
} else {
g_free(content_type);
return NS_ERROR_FAILURE;
}
g_free(content_type);
return NS_OK;
}
NS_IMETHODIMP
nsGIOService::GetDescriptionForMimeType(const nsACString& aMimeType,
nsACString& aDescription)
{
char *content_type =
get_content_type_from_mime_type(PromiseFlatCString(aMimeType).get());
if (!content_type)
return NS_ERROR_FAILURE;
char *desc = g_content_type_get_description(content_type);
if (!desc) {
g_free(content_type);
return NS_ERROR_FAILURE;
}
aDescription.Assign(desc);
g_free(content_type);
g_free(desc);
return NS_OK;
}
NS_IMETHODIMP
nsGIOService::ShowURI(nsIURI* aURI)
{
nsCAutoString spec;
aURI->GetSpec(spec);
GError *error = NULL;
if (!g_app_info_launch_default_for_uri(spec.get(), NULL, &error)) {
g_warning("Could not launch default application for URI: %s" ,error->message);
g_error_free(error);
return NS_ERROR_FAILURE;
}
return NS_OK;
}
NS_IMETHODIMP
nsGIOService::ShowURIForInput(const nsACString& aUri)
{
GFile *file = g_file_new_for_commandline_arg(PromiseFlatCString(aUri).get());
char* spec = g_file_get_uri(file);
nsresult rv = NS_ERROR_FAILURE;
GError *error = NULL;
g_app_info_launch_default_for_uri(spec, NULL, &error);
if (error) {
g_warning("Cannot launch default application: %s", error->message);
g_error_free(error);
} else {
rv = NS_OK;
}
g_object_unref(file);
g_free(spec);
return rv;
}
/**
* Create or find already existing application info for specified command
* and application name.
* @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_FAILURE otherwise.
*/
NS_IMETHODIMP
nsGIOService::CreateAppFromCommand(nsACString const& cmd,
nsACString const& appName,
nsIGIOMimeApp** appInfo)
{
GError *error = NULL;
*appInfo = nsnull;
GAppInfo *app_info = NULL, *app_info_from_list = NULL;
GList *apps = g_app_info_get_all();
GList *apps_p = apps;
// Try to find relevant and existing GAppInfo in all installed application
// We do this by comparing each GAppInfo's executable with out own
while (apps_p) {
app_info_from_list = (GAppInfo*) apps_p->data;
if (!app_info) {
// If the executable is not absolute, get it's full path
char *executable = g_find_program_in_path(g_app_info_get_executable(app_info_from_list));
if (executable && strcmp(executable, PromiseFlatCString(cmd).get()) == 0) {
g_object_ref (app_info_from_list);
app_info = app_info_from_list;
}
g_free(executable);
}
g_object_unref(app_info_from_list);
apps_p = apps_p->next;
}
g_list_free(apps);
if (!app_info) {
app_info = g_app_info_create_from_commandline(PromiseFlatCString(cmd).get(),
PromiseFlatCString(appName).get(),
G_APP_INFO_CREATE_SUPPORTS_URIS,
&error);
}
if (!app_info) {
g_warning("Cannot create application info from command: %s", error->message);
g_error_free(error);
return NS_ERROR_FAILURE;
}
nsGIOMimeApp *mozApp = new nsGIOMimeApp(app_info);
NS_ENSURE_TRUE(mozApp, NS_ERROR_OUT_OF_MEMORY);
NS_ADDREF(*appInfo = mozApp);
return NS_OK;
}