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Add a new nsExternalHelperAppService derived class named nsOSHelperAppServiceChild to be used for the MIME service, external helper app service, and external protocol service interfaces in child processes. nsOSHelperAppServiceChild overrides some methods used to get MIME and external protocol handler information from the OS and implements these methods by remoting the calls to the parent process. This is necessary because, on Mac, querying the OS for helper application info from sandboxed content processes is unreliable and has buggy side effects. For now, only use the new class on Mac. Android and unix file changes r+ by gcp. Windows files changes r+ by bobowen. Sync messages review r+ by nfroyd. MozReview-Commit-ID: 63BiS6VCxfn Differential Revision: https://phabricator.services.mozilla.com/D15620 --HG-- extra : moz-landing-system : lando
123 lines
6.0 KiB
C++
123 lines
6.0 KiB
C++
/* -*- Mode: C++; tab-width: 3; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef nsOSHelperAppService_h__
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#define nsOSHelperAppService_h__
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// The OS helper app service is a subclass of nsExternalHelperAppService and is
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// implemented on each platform. It contains platform specific code for finding
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// helper applications for a given mime type in addition to launching those
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// applications.
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#include "nsExternalHelperAppService.h"
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#include "nsCExternalHandlerService.h"
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#include "nsCOMPtr.h"
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class nsILineInputStream;
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class nsMIMEInfoBase;
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class nsOSHelperAppService : public nsExternalHelperAppService {
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public:
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virtual ~nsOSHelperAppService();
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// method overrides for mime.types and mime.info look up steps
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NS_IMETHOD GetMIMEInfoFromOS(const nsACString& aMimeType,
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const nsACString& aFileExt, bool* aFound,
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nsIMIMEInfo** aMIMEInfo) override;
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NS_IMETHOD GetProtocolHandlerInfoFromOS(const nsACString& aScheme,
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bool* found,
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nsIHandlerInfo** _retval) override;
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// override nsIExternalProtocolService methods
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nsresult OSProtocolHandlerExists(const char* aProtocolScheme,
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bool* aHandlerExists) override;
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NS_IMETHOD GetApplicationDescription(const nsACString& aScheme,
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nsAString& _retval) override;
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// GetFileTokenForPath must be implemented by each platform.
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// platformAppPath --> a platform specific path to an application that we got
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// out of the rdf data source. This can be a mac file
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// spec, a unix path or a windows path depending on the
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// platform
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// aFile --> an nsIFile representation of that platform application path.
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virtual nsresult GetFileTokenForPath(const char16_t* platformAppPath,
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nsIFile** aFile) override;
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protected:
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already_AddRefed<nsMIMEInfoBase> GetFromType(const nsCString& aMimeType);
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already_AddRefed<nsMIMEInfoBase> GetFromExtension(const nsCString& aFileExt);
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private:
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// Helper methods which have to access static members
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static nsresult UnescapeCommand(const nsAString& aEscapedCommand,
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const nsAString& aMajorType,
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const nsAString& aMinorType,
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nsACString& aUnEscapedCommand);
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static nsresult GetFileLocation(const char* aPrefName,
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const char* aEnvVarName,
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nsAString& aFileLocation);
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static nsresult LookUpTypeAndDescription(const nsAString& aFileExtension,
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nsAString& aMajorType,
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nsAString& aMinorType,
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nsAString& aDescription,
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bool aUserData);
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static nsresult CreateInputStream(const nsAString& aFilename,
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nsIFileInputStream** aFileInputStream,
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nsILineInputStream** aLineInputStream,
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nsACString& aBuffer, bool* aNetscapeFormat,
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bool* aMore);
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static nsresult GetTypeAndDescriptionFromMimetypesFile(
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const nsAString& aFilename, const nsAString& aFileExtension,
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nsAString& aMajorType, nsAString& aMinorType, nsAString& aDescription);
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static nsresult LookUpExtensionsAndDescription(const nsAString& aMajorType,
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const nsAString& aMinorType,
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nsAString& aFileExtensions,
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nsAString& aDescription);
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static nsresult GetExtensionsAndDescriptionFromMimetypesFile(
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const nsAString& aFilename, const nsAString& aMajorType,
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const nsAString& aMinorType, nsAString& aFileExtensions,
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nsAString& aDescription);
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static nsresult ParseNetscapeMIMETypesEntry(
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const nsAString& aEntry, nsAString::const_iterator& aMajorTypeStart,
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nsAString::const_iterator& aMajorTypeEnd,
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nsAString::const_iterator& aMinorTypeStart,
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nsAString::const_iterator& aMinorTypeEnd, nsAString& aExtensions,
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nsAString::const_iterator& aDescriptionStart,
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nsAString::const_iterator& aDescriptionEnd);
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static nsresult ParseNormalMIMETypesEntry(
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const nsAString& aEntry, nsAString::const_iterator& aMajorTypeStart,
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nsAString::const_iterator& aMajorTypeEnd,
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nsAString::const_iterator& aMinorTypeStart,
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nsAString::const_iterator& aMinorTypeEnd, nsAString& aExtensions,
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nsAString::const_iterator& aDescriptionStart,
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nsAString::const_iterator& aDescriptionEnd);
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static nsresult LookUpHandlerAndDescription(const nsAString& aMajorType,
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const nsAString& aMinorType,
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nsAString& aHandler,
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nsAString& aDescription,
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nsAString& aMozillaFlags);
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static nsresult DoLookUpHandlerAndDescription(const nsAString& aMajorType,
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const nsAString& aMinorType,
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nsAString& aHandler,
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nsAString& aDescription,
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nsAString& aMozillaFlags,
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bool aUserData);
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static nsresult GetHandlerAndDescriptionFromMailcapFile(
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const nsAString& aFilename, const nsAString& aMajorType,
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const nsAString& aMinorType, nsAString& aHandler, nsAString& aDescription,
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nsAString& aMozillaFlags);
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};
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#endif // nsOSHelperAppService_h__
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