diff options
Diffstat (limited to 'uriloader/exthandler/nsMIMEInfoImpl.cpp')
| -rw-r--r-- | uriloader/exthandler/nsMIMEInfoImpl.cpp | 435 |
1 files changed, 435 insertions, 0 deletions
diff --git a/uriloader/exthandler/nsMIMEInfoImpl.cpp b/uriloader/exthandler/nsMIMEInfoImpl.cpp new file mode 100644 index 000000000..59886e465 --- /dev/null +++ b/uriloader/exthandler/nsMIMEInfoImpl.cpp @@ -0,0 +1,435 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim:set ts=2 sw=2 sts=2 et: */ +/* 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 "nsMIMEInfoImpl.h" +#include "nsXPIDLString.h" +#include "nsReadableUtils.h" +#include "nsStringEnumerator.h" +#include "nsIFile.h" +#include "nsIFileURL.h" +#include "nsEscape.h" +#include "nsIURILoader.h" +#include "nsCURILoader.h" + +// nsISupports methods +NS_IMPL_ADDREF(nsMIMEInfoBase) +NS_IMPL_RELEASE(nsMIMEInfoBase) + +NS_INTERFACE_MAP_BEGIN(nsMIMEInfoBase) + NS_INTERFACE_MAP_ENTRY(nsIHandlerInfo) + // This is only an nsIMIMEInfo if it's a MIME handler. + NS_INTERFACE_MAP_ENTRY_CONDITIONAL(nsIMIMEInfo, mClass == eMIMEInfo) + NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIHandlerInfo) +NS_INTERFACE_MAP_END_THREADSAFE + +// nsMIMEInfoImpl methods + +// Constructors for a MIME handler. +nsMIMEInfoBase::nsMIMEInfoBase(const char *aMIMEType) : + mSchemeOrType(aMIMEType), + mClass(eMIMEInfo), + mPreferredAction(nsIMIMEInfo::saveToDisk), + mAlwaysAskBeforeHandling(true) +{ +} + +nsMIMEInfoBase::nsMIMEInfoBase(const nsACString& aMIMEType) : + mSchemeOrType(aMIMEType), + mClass(eMIMEInfo), + mPreferredAction(nsIMIMEInfo::saveToDisk), + mAlwaysAskBeforeHandling(true) +{ +} + +// Constructor for a handler that lets the caller specify whether this is a +// MIME handler or a protocol handler. In the long run, these will be distinct +// classes (f.e. nsMIMEInfo and nsProtocolInfo), but for now we reuse this class +// for both and distinguish between the two kinds of handlers via the aClass +// argument to this method, which can be either eMIMEInfo or eProtocolInfo. +nsMIMEInfoBase::nsMIMEInfoBase(const nsACString& aType, HandlerClass aClass) : + mSchemeOrType(aType), + mClass(aClass), + mPreferredAction(nsIMIMEInfo::saveToDisk), + mAlwaysAskBeforeHandling(true) +{ +} + +nsMIMEInfoBase::~nsMIMEInfoBase() +{ +} + +NS_IMETHODIMP +nsMIMEInfoBase::GetFileExtensions(nsIUTF8StringEnumerator** aResult) +{ + return NS_NewUTF8StringEnumerator(aResult, &mExtensions, this); +} + +NS_IMETHODIMP +nsMIMEInfoBase::ExtensionExists(const nsACString& aExtension, bool *_retval) +{ + NS_ASSERTION(!aExtension.IsEmpty(), "no extension"); + bool found = false; + uint32_t extCount = mExtensions.Length(); + if (extCount < 1) return NS_OK; + + for (uint8_t i=0; i < extCount; i++) { + const nsCString& ext = mExtensions[i]; + if (ext.Equals(aExtension, nsCaseInsensitiveCStringComparator())) { + found = true; + break; + } + } + + *_retval = found; + return NS_OK; +} + +NS_IMETHODIMP +nsMIMEInfoBase::GetPrimaryExtension(nsACString& _retval) +{ + if (!mExtensions.Length()) + return NS_ERROR_NOT_INITIALIZED; + + _retval = mExtensions[0]; + return NS_OK; +} + +NS_IMETHODIMP +nsMIMEInfoBase::SetPrimaryExtension(const nsACString& aExtension) +{ + NS_ASSERTION(!aExtension.IsEmpty(), "no extension"); + uint32_t extCount = mExtensions.Length(); + uint8_t i; + bool found = false; + for (i=0; i < extCount; i++) { + const nsCString& ext = mExtensions[i]; + if (ext.Equals(aExtension, nsCaseInsensitiveCStringComparator())) { + found = true; + break; + } + } + if (found) { + mExtensions.RemoveElementAt(i); + } + + mExtensions.InsertElementAt(0, aExtension); + + return NS_OK; +} + +NS_IMETHODIMP +nsMIMEInfoBase::AppendExtension(const nsACString& aExtension) +{ + mExtensions.AppendElement(aExtension); + return NS_OK; +} + +NS_IMETHODIMP +nsMIMEInfoBase::GetType(nsACString& aType) +{ + if (mSchemeOrType.IsEmpty()) + return NS_ERROR_NOT_INITIALIZED; + + aType = mSchemeOrType; + return NS_OK; +} + +NS_IMETHODIMP +nsMIMEInfoBase::GetMIMEType(nsACString& aMIMEType) +{ + if (mSchemeOrType.IsEmpty()) + return NS_ERROR_NOT_INITIALIZED; + + aMIMEType = mSchemeOrType; + return NS_OK; +} + +NS_IMETHODIMP +nsMIMEInfoBase::GetDescription(nsAString& aDescription) +{ + aDescription = mDescription; + return NS_OK; +} + +NS_IMETHODIMP +nsMIMEInfoBase::SetDescription(const nsAString& aDescription) +{ + mDescription = aDescription; + return NS_OK; +} + +NS_IMETHODIMP +nsMIMEInfoBase::Equals(nsIMIMEInfo *aMIMEInfo, bool *_retval) +{ + if (!aMIMEInfo) return NS_ERROR_NULL_POINTER; + + nsAutoCString type; + nsresult rv = aMIMEInfo->GetMIMEType(type); + if (NS_FAILED(rv)) return rv; + + *_retval = mSchemeOrType.Equals(type); + + return NS_OK; +} + +NS_IMETHODIMP +nsMIMEInfoBase::SetFileExtensions(const nsACString& aExtensions) +{ + mExtensions.Clear(); + nsCString extList( aExtensions ); + + int32_t breakLocation = -1; + while ( (breakLocation= extList.FindChar(',') )!= -1) + { + mExtensions.AppendElement(Substring(extList.get(), extList.get() + breakLocation)); + extList.Cut(0, breakLocation+1 ); + } + if ( !extList.IsEmpty() ) + mExtensions.AppendElement( extList ); + return NS_OK; +} + +NS_IMETHODIMP +nsMIMEInfoBase::GetDefaultDescription(nsAString& aDefaultDescription) +{ + aDefaultDescription = mDefaultAppDescription; + return NS_OK; +} + +NS_IMETHODIMP +nsMIMEInfoBase::GetPreferredApplicationHandler(nsIHandlerApp ** aPreferredAppHandler) +{ + *aPreferredAppHandler = mPreferredApplication; + NS_IF_ADDREF(*aPreferredAppHandler); + return NS_OK; +} + +NS_IMETHODIMP +nsMIMEInfoBase::SetPreferredApplicationHandler(nsIHandlerApp * aPreferredAppHandler) +{ + mPreferredApplication = aPreferredAppHandler; + return NS_OK; +} + +NS_IMETHODIMP +nsMIMEInfoBase::GetPossibleApplicationHandlers(nsIMutableArray ** aPossibleAppHandlers) +{ + if (!mPossibleApplications) + mPossibleApplications = do_CreateInstance(NS_ARRAY_CONTRACTID); + + if (!mPossibleApplications) + return NS_ERROR_OUT_OF_MEMORY; + + *aPossibleAppHandlers = mPossibleApplications; + NS_IF_ADDREF(*aPossibleAppHandlers); + return NS_OK; +} + +NS_IMETHODIMP +nsMIMEInfoBase::GetPreferredAction(nsHandlerInfoAction * aPreferredAction) +{ + *aPreferredAction = mPreferredAction; + return NS_OK; +} + +NS_IMETHODIMP +nsMIMEInfoBase::SetPreferredAction(nsHandlerInfoAction aPreferredAction) +{ + mPreferredAction = aPreferredAction; + return NS_OK; +} + +NS_IMETHODIMP +nsMIMEInfoBase::GetAlwaysAskBeforeHandling(bool * aAlwaysAsk) +{ + *aAlwaysAsk = mAlwaysAskBeforeHandling; + + return NS_OK; +} + +NS_IMETHODIMP +nsMIMEInfoBase::SetAlwaysAskBeforeHandling(bool aAlwaysAsk) +{ + mAlwaysAskBeforeHandling = aAlwaysAsk; + return NS_OK; +} + +/* static */ +nsresult +nsMIMEInfoBase::GetLocalFileFromURI(nsIURI *aURI, nsIFile **aFile) +{ + nsresult rv; + + nsCOMPtr<nsIFileURL> fileUrl = do_QueryInterface(aURI, &rv); + if (NS_FAILED(rv)) { + return rv; + } + + nsCOMPtr<nsIFile> file; + rv = fileUrl->GetFile(getter_AddRefs(file)); + if (NS_FAILED(rv)) { + return rv; + } + + file.forget(aFile); + return NS_OK; +} + +NS_IMETHODIMP +nsMIMEInfoBase::LaunchWithFile(nsIFile* aFile) +{ + nsresult rv; + + // it doesn't make any sense to call this on protocol handlers + NS_ASSERTION(mClass == eMIMEInfo, + "nsMIMEInfoBase should have mClass == eMIMEInfo"); + + if (mPreferredAction == useSystemDefault) { + return LaunchDefaultWithFile(aFile); + } + + if (mPreferredAction == useHelperApp) { + if (!mPreferredApplication) + return NS_ERROR_FILE_NOT_FOUND; + + // at the moment, we only know how to hand files off to local handlers + nsCOMPtr<nsILocalHandlerApp> localHandler = + do_QueryInterface(mPreferredApplication, &rv); + NS_ENSURE_SUCCESS(rv, rv); + + nsCOMPtr<nsIFile> executable; + rv = localHandler->GetExecutable(getter_AddRefs(executable)); + NS_ENSURE_SUCCESS(rv, rv); + + nsAutoCString path; + aFile->GetNativePath(path); + return LaunchWithIProcess(executable, path); + } + + return NS_ERROR_INVALID_ARG; +} + +NS_IMETHODIMP +nsMIMEInfoBase::LaunchWithURI(nsIURI* aURI, + nsIInterfaceRequestor* aWindowContext) +{ + // for now, this is only being called with protocol handlers; that + // will change once we get to more general registerContentHandler + // support + NS_ASSERTION(mClass == eProtocolInfo, + "nsMIMEInfoBase should be a protocol handler"); + + if (mPreferredAction == useSystemDefault) { + return LoadUriInternal(aURI); + } + + if (mPreferredAction == useHelperApp) { + if (!mPreferredApplication) + return NS_ERROR_FILE_NOT_FOUND; + + return mPreferredApplication->LaunchWithURI(aURI, aWindowContext); + } + + return NS_ERROR_INVALID_ARG; +} + +void +nsMIMEInfoBase::CopyBasicDataTo(nsMIMEInfoBase* aOther) +{ + aOther->mSchemeOrType = mSchemeOrType; + aOther->mDefaultAppDescription = mDefaultAppDescription; + aOther->mExtensions = mExtensions; +} + +/* static */ +already_AddRefed<nsIProcess> +nsMIMEInfoBase::InitProcess(nsIFile* aApp, nsresult* aResult) +{ + NS_ASSERTION(aApp, "Unexpected null pointer, fix caller"); + + nsCOMPtr<nsIProcess> process = do_CreateInstance(NS_PROCESS_CONTRACTID, + aResult); + if (NS_FAILED(*aResult)) + return nullptr; + + *aResult = process->Init(aApp); + if (NS_FAILED(*aResult)) + return nullptr; + + return process.forget(); +} + +/* static */ +nsresult +nsMIMEInfoBase::LaunchWithIProcess(nsIFile* aApp, const nsCString& aArg) +{ + nsresult rv; + nsCOMPtr<nsIProcess> process = InitProcess(aApp, &rv); + if (NS_FAILED(rv)) + return rv; + + const char *string = aArg.get(); + + return process->Run(false, &string, 1); +} + +/* static */ +nsresult +nsMIMEInfoBase::LaunchWithIProcess(nsIFile* aApp, const nsString& aArg) +{ + nsresult rv; + nsCOMPtr<nsIProcess> process = InitProcess(aApp, &rv); + if (NS_FAILED(rv)) + return rv; + + const char16_t *string = aArg.get(); + + return process->Runw(false, &string, 1); +} + +// nsMIMEInfoImpl implementation +NS_IMETHODIMP +nsMIMEInfoImpl::GetDefaultDescription(nsAString& aDefaultDescription) +{ + if (mDefaultAppDescription.IsEmpty() && mDefaultApplication) { + // Don't want to cache this, just in case someone resets the app + // without changing the description.... + mDefaultApplication->GetLeafName(aDefaultDescription); + } else { + aDefaultDescription = mDefaultAppDescription; + } + + return NS_OK; +} + +NS_IMETHODIMP +nsMIMEInfoImpl::GetHasDefaultHandler(bool * _retval) +{ + *_retval = !mDefaultAppDescription.IsEmpty(); + if (mDefaultApplication) { + bool exists; + *_retval = NS_SUCCEEDED(mDefaultApplication->Exists(&exists)) && exists; + } + return NS_OK; +} + +nsresult +nsMIMEInfoImpl::LaunchDefaultWithFile(nsIFile* aFile) +{ + if (!mDefaultApplication) + return NS_ERROR_FILE_NOT_FOUND; + + nsAutoCString nativePath; + aFile->GetNativePath(nativePath); + + return LaunchWithIProcess(mDefaultApplication, nativePath); +} + +NS_IMETHODIMP +nsMIMEInfoBase::GetPossibleLocalHandlers(nsIArray **_retval) +{ + return NS_ERROR_NOT_IMPLEMENTED; +} |