gecko-dev/xpcom/build/nsXULAppAPI.h

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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/. */

#ifndef _nsXULAppAPI_h__
#define _nsXULAppAPI_h__

#include "nsID.h"
#include "xrecore.h"
#include "nsXPCOM.h"
#include "nsISupports.h"
#include "mozilla/Logging.h"
#include "mozilla/XREAppData.h"
#include "js/TypeDecls.h"

#include "mozilla/ArrayUtils.h"
#include "mozilla/Assertions.h"
#include "mozilla/Vector.h"
#include "mozilla/TimeStamp.h"
#include "XREChildData.h"
#include "XREShellData.h"

#if defined(MOZ_WIDGET_ANDROID)
#  include <jni.h>
#endif

/**
 * A directory service key which provides the platform-correct "application
 * data" directory as follows, where $name and $vendor are as defined above and
 * $vendor is optional:
 *
 * Windows:
 *   HOME = Documents and Settings\$USER\Application Data
 *   UAppData = $HOME[\$vendor]\$name
 *
 * Unix:
 *   HOME = ~
 *   UAppData = $HOME/.[$vendor/]$name
 *
 * Mac:
 *   HOME = ~
 *   UAppData = $HOME/Library/Application Support/$name
 *
 * Note that the "profile" member above will change the value of UAppData as
 * follows:
 *
 * Windows:
 *   UAppData = $HOME\$profile
 *
 * Unix:
 *   UAppData = $HOME/.$profile
 *
 * Mac:
 *   UAppData = $HOME/Library/Application Support/$profile
 */
#define XRE_USER_APP_DATA_DIR "UAppData"

/**
 * A directory service key which provides the executable file used to
 * launch the current process.  This is the same value returned by the
 * XRE_GetBinaryPath function defined below.
 */
#define XRE_EXECUTABLE_FILE "XREExeF"

/**
 * A directory service key which specifies the profile
 * directory. Unlike the NS_APP_USER_PROFILE_50_DIR key, this key may
 * be available when the profile hasn't been "started", or after is
 * has been shut down. If the application is running without a
 * profile, such as when showing the profile manager UI, this key will
 * not be available. This key is provided by the XUL apprunner or by
 * the aAppDirProvider object passed to XRE_InitEmbedding.
 */
#define NS_APP_PROFILE_DIR_STARTUP "ProfDS"

/**
 * A directory service key which specifies the profile
 * directory. Unlike the NS_APP_USER_PROFILE_LOCAL_50_DIR key, this key may
 * be available when the profile hasn't been "started", or after is
 * has been shut down. If the application is running without a
 * profile, such as when showing the profile manager UI, this key will
 * not be available. This key is provided by the XUL apprunner or by
 * the aAppDirProvider object passed to XRE_InitEmbedding.
 */
#define NS_APP_PROFILE_LOCAL_DIR_STARTUP "ProfLDS"

/**
 * A directory service key which specifies the system extension
 * parent directory containing platform-specific extensions.
 * This key may not be available on all platforms.
 */
#define XRE_SYS_LOCAL_EXTENSION_PARENT_DIR "XRESysLExtPD"

/**
 * A directory service key which specifies the system extension
 * parent directory containing platform-independent extensions.
 * This key may not be available on all platforms.
 * Additionally, the directory may be equal to that returned by
 * XRE_SYS_LOCAL_EXTENSION_PARENT_DIR on some platforms.
 */
#define XRE_SYS_SHARE_EXTENSION_PARENT_DIR "XRESysSExtPD"

#if defined(XP_UNIX) || defined(XP_MACOSX)
/**
 * Directory service keys for the system-wide and user-specific
 * directories where native manifests used by the WebExtensions
 * native messaging and managed storage features are found.
 */
#  define XRE_SYS_NATIVE_MANIFESTS "XRESysNativeManifests"
#  define XRE_USER_NATIVE_MANIFESTS "XREUserNativeManifests"
#endif

/**
 * A directory service key which specifies the user system extension
 * parent directory.
 */
#define XRE_USER_SYS_EXTENSION_DIR "XREUSysExt"

/**
 * A directory service key which specifies a directory where temporary
 * system extensions can be loaded from during development.
 */
#define XRE_USER_SYS_EXTENSION_DEV_DIR "XRESysExtDev"

/**
 * A directory service key which specifies the distribution specific files for
 * the application.
 */
#define XRE_APP_DISTRIBUTION_DIR "XREAppDist"

/**
 * A directory service key which specifies the location for system add-ons.
 */
#define XRE_APP_FEATURES_DIR "XREAppFeat"

/**
 * A directory service key which specifies the location for app dir add-ons.
 * Should be a synonym for XCurProcD everywhere except in tests.
 */
#define XRE_ADDON_APP_DIR "XREAddonAppDir"

/**
 * A directory service key which specifies the distribution specific files for
 * the application unique for each user.
 * It's located at /run/user/$UID/<product name>/
 */
#define XRE_USER_RUNTIME_DIR "XREUserRunTimeDir"

/**
 * A directory service key which provides the update directory. Callers should
 * fall back to appDir.
 * Windows:    If vendor name exists:
 *             ProgramData\<vendor name>\updates\
 *             <hash of the path to XRE_EXECUTABLE_FILE's parent directory>
 *
 *             If vendor name doesn't exist, but product name exists:
 *             ProgramData\<product name>\updates\
 *             <hash of the path to XRE_EXECUTABLE_FILE's parent directory>
 *
 *             If neither vendor nor product name exists:
 *             ProgramData\Mozilla\updates
 *
 * Mac:        ~/Library/Caches/Mozilla/updates/<absolute path to app dir>
 *
 * All others: Parent directory of XRE_EXECUTABLE_FILE.
 */
#define XRE_UPDATE_ROOT_DIR "UpdRootD"

/**
 * A directory service key which provides the *old* update directory. This
 * path should only be used when data needs to be migrated from the old update
 * directory.
 * Windows:    If vendor name exists:
 *             Documents and Settings\<User>\Local Settings\Application Data\
 *             <vendor name>\updates\
 *             <hash of the path to XRE_EXECUTABLE_FILE's parent directory>
 *
 *             If vendor name doesn't exist, but product name exists:
 *             Documents and Settings\<User>\Local Settings\Application Data\
 *             <product name>\updates\
 *             <hash of the path to XRE_EXECUTABLE_FILE's parent directory>
 *
 *             If neither vendor nor product name exists:
 *             Documents and Settings\<User>\Local Settings\Application Data\
 *             Mozilla\updates
 *
 * This path does not exist on other operating systems
 */
#define XRE_OLD_UPDATE_ROOT_DIR "OldUpdRootD"

/**
 * Begin an XUL application. Does not return until the user exits the
 * application.
 *
 * @param argc/argv Command-line parameters to pass to the application. On
 *                  Windows, these should be in UTF8. On unix-like platforms
 *                  these are in the "native" character set.
 *
 * @param aConfig  Information about the application to be run.
 *
 * @return         A native result code suitable for returning from main().
 *
 * @note           If the binary is linked against the standalone XPCOM glue,
 *                 XPCOMGlueStartup() should be called before this method.
 */
namespace mozilla {
struct BootstrapConfig;
}
XRE_API(int, XRE_main,
        (int argc, char* argv[], const mozilla::BootstrapConfig& aConfig))

/**
 * Given a path relative to the current working directory (or an absolute
 * path), return an appropriate nsIFile object.
 *
 * @note Pass UTF8 strings on Windows... native charset on other platforms.
 */
XRE_API(nsresult, XRE_GetFileFromPath, (const char* aPath, nsIFile** aResult))

/**
 * Get the path of the running application binary and store it in aResult.
 */
XRE_API(nsresult, XRE_GetBinaryPath, (nsIFile * *aResult))

/**
 * Get the static module built in to libxul.
 */
XRE_API(const mozilla::Module*, XRE_GetStaticModule, ())

/**
 * Lock a profile directory using platform-specific semantics.
 *
 * @param aDirectory  The profile directory to lock.
 * @param aLockObject An opaque lock object. The directory will remain locked
 *                    as long as the XPCOM reference is held.
 */
XRE_API(nsresult, XRE_LockProfileDirectory,
        (nsIFile * aDirectory, nsISupports** aLockObject))

/**
 * Initialize libXUL for embedding purposes.
 *
 * @param aLibXULDirectory   The directory in which the libXUL shared library
 *                           was found.
 * @param aAppDirectory      The directory in which the application components
 *                           and resources can be found. This will map to
 *                           the NS_OS_CURRENT_PROCESS_DIR directory service
 *                           key.
 * @param aAppDirProvider    A directory provider for the application. This
 *                           provider will be aggregated by a libxul provider
 *                           which will provide the base required GRE keys.
 *
 * @note This function must be called from the "main" thread.
 *
 * @note At the present time, this function may only be called once in
 * a given process. Use XRE_TermEmbedding to clean up and free
 * resources allocated by XRE_InitEmbedding.
 */

XRE_API(nsresult, XRE_InitEmbedding2,
        (nsIFile * aLibXULDirectory, nsIFile* aAppDirectory,
         nsIDirectoryServiceProvider* aAppDirProvider))

/**
 * Register static XPCOM component information.
 * This method may be called at any time before or after XRE_main or
 * XRE_InitEmbedding.
 */
XRE_API(nsresult, XRE_AddStaticComponent, (const mozilla::Module* aComponent))

/**
 * Register XPCOM components found in an array of files/directories.
 * This method may be called at any time before or after XRE_main or
 * XRE_InitEmbedding.
 *
 * @param aFiles An array of files or directories.
 * @param aFileCount the number of items in the aFiles array.
 * @note appdir/components is registered automatically.
 *
 * NS_APP_LOCATION specifies a location to search for binary XPCOM
 * components as well as component/chrome manifest files.
 *
 * NS_EXTENSION_LOCATION excludes binary XPCOM components but allows other
 * manifest instructions.
 *
 * NS_SKIN_LOCATION specifies a location to search for chrome manifest files
 * which are only allowed to register skin packages.
 */
enum NSLocationType {
  NS_APP_LOCATION,
  NS_EXTENSION_LOCATION,
  NS_SKIN_LOCATION,
  NS_BOOTSTRAPPED_LOCATION
};

XRE_API(nsresult, XRE_AddManifestLocation,
        (NSLocationType aType, nsIFile* aLocation))

/**
 * Register XPCOM components found in a JAR.
 * This is similar to XRE_AddManifestLocation except the file specified
 * must be a zip archive with a manifest named chrome.manifest
 * This method may be called at any time before or after XRE_main or
 * XRE_InitEmbedding.
 *
 * @param aFiles An array of files or directories.
 * @param aFileCount the number of items in the aFiles array.
 * @note appdir/components is registered automatically.
 *
 * NS_COMPONENT_LOCATION specifies a location to search for binary XPCOM
 * components as well as component/chrome manifest files.
 *
 * NS_SKIN_LOCATION specifies a location to search for chrome manifest files
 * which are only allowed to register skin packages.
 */
XRE_API(nsresult, XRE_AddJarManifestLocation,
        (NSLocationType aType, nsIFile* aLocation))

/**
 * Fire notifications to inform the toolkit about a new profile. This
 * method should be called after XRE_InitEmbedding if the embedder
 * wishes to run with a profile. Normally the embedder should call
 * XRE_LockProfileDirectory to lock the directory before calling this
 * method.
 *
 * @note There are two possibilities for selecting a profile:
 *
 * 1) Select the profile before calling XRE_InitEmbedding. The aAppDirProvider
 *    object passed to XRE_InitEmbedding should provide the
 *    NS_APP_USER_PROFILE_50_DIR key, and may also provide the following keys:
 *    - NS_APP_USER_PROFILE_LOCAL_50_DIR
 *    - NS_APP_PROFILE_DIR_STARTUP
 *    - NS_APP_PROFILE_LOCAL_DIR_STARTUP
 *    In this scenario XRE_NotifyProfile should be called immediately after
 *    XRE_InitEmbedding. Component registration information will be stored in
 *    the profile and JS components may be stored in the fastload cache.
 *
 * 2) Select a profile some time after calling XRE_InitEmbedding. In this case
 *    the embedder must install a directory service provider which provides
 *    NS_APP_USER_PROFILE_50_DIR and optionally
 *    NS_APP_USER_PROFILE_LOCAL_50_DIR. Component registration information
 *    will be stored in the application directory and JS components will not
 *    fastload.
 */
XRE_API(void, XRE_NotifyProfile, ())

/**
 * Terminate embedding started with XRE_InitEmbedding or XRE_InitEmbedding2
 */
XRE_API(void, XRE_TermEmbedding, ())

/**
 * Parse an INI file (application.ini or override.ini) into an existing
 * nsXREAppData structure.
 *
 * @param aINIFile The INI file to parse
 * @param aAppData The nsXREAppData structure to fill.
 */
XRE_API(nsresult, XRE_ParseAppData,
        (nsIFile * aINIFile, mozilla::XREAppData& aAppData))

enum GeckoProcessType {
#define GECKO_PROCESS_TYPE(enum_name, string_name, xre_name, bin_type) \
  GeckoProcessType_##enum_name,
#include "mozilla/GeckoProcessTypes.h"
#undef GECKO_PROCESS_TYPE
  GeckoProcessType_End,
  GeckoProcessType_Invalid = GeckoProcessType_End
};

static const char* const kGeckoProcessTypeString[] = {
#define GECKO_PROCESS_TYPE(enum_name, string_name, xre_name, bin_type) \
  string_name,
#include "mozilla/GeckoProcessTypes.h"
#undef GECKO_PROCESS_TYPE
};

static_assert(MOZ_ARRAY_LENGTH(kGeckoProcessTypeString) == GeckoProcessType_End,
              "Array length mismatch");

XRE_API(const char*, XRE_ChildProcessTypeToString,
        (GeckoProcessType aProcessType))
XRE_API(const char*, XRE_ChildProcessTypeToAnnotation,
        (GeckoProcessType aProcessType))

#if defined(MOZ_WIDGET_ANDROID)
struct XRE_AndroidChildFds {
  int mPrefsFd;
  int mPrefMapFd;
  int mIpcFd;
  int mCrashFd;
  int mCrashAnnotationFd;
};

XRE_API(void, XRE_SetAndroidChildFds,
        (JNIEnv * env, const XRE_AndroidChildFds& fds))
#endif  // defined(MOZ_WIDGET_ANDROID)

XRE_API(void, XRE_SetProcessType, (const char* aProcessTypeString))

// Used in child processes.
#if defined(XP_WIN)
// Uses uintptr_t, even though it's really a HANDLE, because including
// <windows.h> here caused compilation issues.
XRE_API(bool, XRE_SetRemoteExceptionHandler,
        (const char* aPipe, uintptr_t aCrashTimeAnnotationFile))
#else
XRE_API(bool, XRE_SetRemoteExceptionHandler, (const char* aPipe))
#endif

namespace mozilla {
namespace gmp {
class GMPLoader;
}  // namespace gmp
}  // namespace mozilla

XRE_API(nsresult, XRE_InitChildProcess,
        (int aArgc, char* aArgv[], const XREChildData* aChildData))

XRE_API(GeckoProcessType, XRE_GetProcessType, ())

/**
 * Returns true when called in the e10s parent process.  Does *NOT* return true
 * when called in the main process if e10s is disabled.
 */
XRE_API(bool, XRE_IsE10sParentProcess, ())

/**
 * Defines XRE_IsParentProcess, XRE_IsContentProcess, etc.
 *
 * XRE_IsParentProcess is unique in that it returns true when called in
 * the e10s parent process or called in the main process when e10s is
 * disabled.
 */
#define GECKO_PROCESS_TYPE(enum_name, string_name, xre_name, bin_type) \
  XRE_API(bool, XRE_Is##xre_name##Process, ())
#include "mozilla/GeckoProcessTypes.h"
#undef GECKO_PROCESS_TYPE

XRE_API(bool, XRE_IsSocketProcess, ())

/**
 * Returns true if the appshell should run its own native event loop. Returns
 * false if we should rely solely on the Gecko event loop.
 */
XRE_API(bool, XRE_UseNativeEventProcessing, ())

#if defined(XP_WIN)
/**
 * @returns true if win32k calls are allowed in this process type, false if
 *          win32k is (or should be) disabled.
 */
XRE_API(bool, XRE_Win32kCallsAllowed, ())
#endif

typedef void (*MainFunction)(void* aData);

XRE_API(nsresult, XRE_InitParentProcess,
        (int aArgc, char* aArgv[], MainFunction aMainFunction,
         void* aMainFunctionExtraData))

XRE_API(int, XRE_RunIPDLTest, (int aArgc, char* aArgv[]))

XRE_API(nsresult, XRE_RunAppShell, ())

XRE_API(nsresult, XRE_InitCommandLine, (int aArgc, char* aArgv[]))

XRE_API(nsresult, XRE_DeinitCommandLine, ())

class MessageLoop;

XRE_API(void, XRE_ShutdownChildProcess, ())

XRE_API(MessageLoop*, XRE_GetIOMessageLoop, ())

XRE_API(bool, XRE_SendTestShellCommand,
        (JSContext * aCx, JSString* aCommand, JS::Value* aCallback))
XRE_API(bool, XRE_ShutdownTestShell, ())

XRE_API(void, XRE_InstallX11ErrorHandler, ())

XRE_API(void, XRE_TelemetryAccumulate, (int aID, uint32_t aSample))

XRE_API(void, XRE_StartupTimelineRecord, (int aEvent, mozilla::TimeStamp aWhen))

XRE_API(void, XRE_InitOmnijar, (nsIFile * aGreOmni, nsIFile* aAppOmni))
XRE_API(void, XRE_StopLateWriteChecks, (void))

XRE_API(void, XRE_EnableSameExecutableForContentProc, ())

namespace mozilla {
enum class BinPathType { Self, PluginContainer };
}
XRE_API(mozilla::BinPathType, XRE_GetChildProcBinPathType,
        (GeckoProcessType aProcessType));

XRE_API(int, XRE_XPCShellMain,
        (int argc, char** argv, char** envp, const XREShellData* aShellData))

#ifdef LIBFUZZER
#  include "FuzzerRegistry.h"

XRE_API(void, XRE_LibFuzzerSetDriver, (LibFuzzerDriver))

#endif  // LIBFUZZER

#endif  // _nsXULAppAPI_h__