1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/uriloader/exthandler/nsMIMEInfoImpl.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,436 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* vim:set ts=2 sw=2 sts=2 et: */
1.6 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.7 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.8 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.9 +
1.10 +#include "nsMIMEInfoImpl.h"
1.11 +#include "nsXPIDLString.h"
1.12 +#include "nsReadableUtils.h"
1.13 +#include "nsStringEnumerator.h"
1.14 +#include "nsIFile.h"
1.15 +#include "nsIFileURL.h"
1.16 +#include "nsEscape.h"
1.17 +#include "nsNetUtil.h"
1.18 +#include "nsIURILoader.h"
1.19 +#include "nsCURILoader.h"
1.20 +
1.21 +// nsISupports methods
1.22 +NS_IMPL_ADDREF(nsMIMEInfoBase)
1.23 +NS_IMPL_RELEASE(nsMIMEInfoBase)
1.24 +
1.25 +NS_INTERFACE_MAP_BEGIN(nsMIMEInfoBase)
1.26 + NS_INTERFACE_MAP_ENTRY(nsIHandlerInfo)
1.27 + // This is only an nsIMIMEInfo if it's a MIME handler.
1.28 + NS_INTERFACE_MAP_ENTRY_CONDITIONAL(nsIMIMEInfo, mClass == eMIMEInfo)
1.29 + NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIHandlerInfo)
1.30 +NS_INTERFACE_MAP_END_THREADSAFE
1.31 +
1.32 +// nsMIMEInfoImpl methods
1.33 +
1.34 +// Constructors for a MIME handler.
1.35 +nsMIMEInfoBase::nsMIMEInfoBase(const char *aMIMEType) :
1.36 + mSchemeOrType(aMIMEType),
1.37 + mClass(eMIMEInfo),
1.38 + mPreferredAction(nsIMIMEInfo::saveToDisk),
1.39 + mAlwaysAskBeforeHandling(true)
1.40 +{
1.41 +}
1.42 +
1.43 +nsMIMEInfoBase::nsMIMEInfoBase(const nsACString& aMIMEType) :
1.44 + mSchemeOrType(aMIMEType),
1.45 + mClass(eMIMEInfo),
1.46 + mPreferredAction(nsIMIMEInfo::saveToDisk),
1.47 + mAlwaysAskBeforeHandling(true)
1.48 +{
1.49 +}
1.50 +
1.51 +// Constructor for a handler that lets the caller specify whether this is a
1.52 +// MIME handler or a protocol handler. In the long run, these will be distinct
1.53 +// classes (f.e. nsMIMEInfo and nsProtocolInfo), but for now we reuse this class
1.54 +// for both and distinguish between the two kinds of handlers via the aClass
1.55 +// argument to this method, which can be either eMIMEInfo or eProtocolInfo.
1.56 +nsMIMEInfoBase::nsMIMEInfoBase(const nsACString& aType, HandlerClass aClass) :
1.57 + mSchemeOrType(aType),
1.58 + mClass(aClass),
1.59 + mPreferredAction(nsIMIMEInfo::saveToDisk),
1.60 + mAlwaysAskBeforeHandling(true)
1.61 +{
1.62 +}
1.63 +
1.64 +nsMIMEInfoBase::~nsMIMEInfoBase()
1.65 +{
1.66 +}
1.67 +
1.68 +NS_IMETHODIMP
1.69 +nsMIMEInfoBase::GetFileExtensions(nsIUTF8StringEnumerator** aResult)
1.70 +{
1.71 + return NS_NewUTF8StringEnumerator(aResult, &mExtensions, this);
1.72 +}
1.73 +
1.74 +NS_IMETHODIMP
1.75 +nsMIMEInfoBase::ExtensionExists(const nsACString& aExtension, bool *_retval)
1.76 +{
1.77 + NS_ASSERTION(!aExtension.IsEmpty(), "no extension");
1.78 + bool found = false;
1.79 + uint32_t extCount = mExtensions.Length();
1.80 + if (extCount < 1) return NS_OK;
1.81 +
1.82 + for (uint8_t i=0; i < extCount; i++) {
1.83 + const nsCString& ext = mExtensions[i];
1.84 + if (ext.Equals(aExtension, nsCaseInsensitiveCStringComparator())) {
1.85 + found = true;
1.86 + break;
1.87 + }
1.88 + }
1.89 +
1.90 + *_retval = found;
1.91 + return NS_OK;
1.92 +}
1.93 +
1.94 +NS_IMETHODIMP
1.95 +nsMIMEInfoBase::GetPrimaryExtension(nsACString& _retval)
1.96 +{
1.97 + if (!mExtensions.Length())
1.98 + return NS_ERROR_NOT_INITIALIZED;
1.99 +
1.100 + _retval = mExtensions[0];
1.101 + return NS_OK;
1.102 +}
1.103 +
1.104 +NS_IMETHODIMP
1.105 +nsMIMEInfoBase::SetPrimaryExtension(const nsACString& aExtension)
1.106 +{
1.107 + NS_ASSERTION(!aExtension.IsEmpty(), "no extension");
1.108 + uint32_t extCount = mExtensions.Length();
1.109 + uint8_t i;
1.110 + bool found = false;
1.111 + for (i=0; i < extCount; i++) {
1.112 + const nsCString& ext = mExtensions[i];
1.113 + if (ext.Equals(aExtension, nsCaseInsensitiveCStringComparator())) {
1.114 + found = true;
1.115 + break;
1.116 + }
1.117 + }
1.118 + if (found) {
1.119 + mExtensions.RemoveElementAt(i);
1.120 + }
1.121 +
1.122 + mExtensions.InsertElementAt(0, aExtension);
1.123 +
1.124 + return NS_OK;
1.125 +}
1.126 +
1.127 +NS_IMETHODIMP
1.128 +nsMIMEInfoBase::AppendExtension(const nsACString& aExtension)
1.129 +{
1.130 + mExtensions.AppendElement(aExtension);
1.131 + return NS_OK;
1.132 +}
1.133 +
1.134 +NS_IMETHODIMP
1.135 +nsMIMEInfoBase::GetType(nsACString& aType)
1.136 +{
1.137 + if (mSchemeOrType.IsEmpty())
1.138 + return NS_ERROR_NOT_INITIALIZED;
1.139 +
1.140 + aType = mSchemeOrType;
1.141 + return NS_OK;
1.142 +}
1.143 +
1.144 +NS_IMETHODIMP
1.145 +nsMIMEInfoBase::GetMIMEType(nsACString& aMIMEType)
1.146 +{
1.147 + if (mSchemeOrType.IsEmpty())
1.148 + return NS_ERROR_NOT_INITIALIZED;
1.149 +
1.150 + aMIMEType = mSchemeOrType;
1.151 + return NS_OK;
1.152 +}
1.153 +
1.154 +NS_IMETHODIMP
1.155 +nsMIMEInfoBase::GetDescription(nsAString& aDescription)
1.156 +{
1.157 + aDescription = mDescription;
1.158 + return NS_OK;
1.159 +}
1.160 +
1.161 +NS_IMETHODIMP
1.162 +nsMIMEInfoBase::SetDescription(const nsAString& aDescription)
1.163 +{
1.164 + mDescription = aDescription;
1.165 + return NS_OK;
1.166 +}
1.167 +
1.168 +NS_IMETHODIMP
1.169 +nsMIMEInfoBase::Equals(nsIMIMEInfo *aMIMEInfo, bool *_retval)
1.170 +{
1.171 + if (!aMIMEInfo) return NS_ERROR_NULL_POINTER;
1.172 +
1.173 + nsAutoCString type;
1.174 + nsresult rv = aMIMEInfo->GetMIMEType(type);
1.175 + if (NS_FAILED(rv)) return rv;
1.176 +
1.177 + *_retval = mSchemeOrType.Equals(type);
1.178 +
1.179 + return NS_OK;
1.180 +}
1.181 +
1.182 +NS_IMETHODIMP
1.183 +nsMIMEInfoBase::SetFileExtensions(const nsACString& aExtensions)
1.184 +{
1.185 + mExtensions.Clear();
1.186 + nsCString extList( aExtensions );
1.187 +
1.188 + int32_t breakLocation = -1;
1.189 + while ( (breakLocation= extList.FindChar(',') )!= -1)
1.190 + {
1.191 + mExtensions.AppendElement(Substring(extList.get(), extList.get() + breakLocation));
1.192 + extList.Cut(0, breakLocation+1 );
1.193 + }
1.194 + if ( !extList.IsEmpty() )
1.195 + mExtensions.AppendElement( extList );
1.196 + return NS_OK;
1.197 +}
1.198 +
1.199 +NS_IMETHODIMP
1.200 +nsMIMEInfoBase::GetDefaultDescription(nsAString& aDefaultDescription)
1.201 +{
1.202 + aDefaultDescription = mDefaultAppDescription;
1.203 + return NS_OK;
1.204 +}
1.205 +
1.206 +NS_IMETHODIMP
1.207 +nsMIMEInfoBase::GetPreferredApplicationHandler(nsIHandlerApp ** aPreferredAppHandler)
1.208 +{
1.209 + *aPreferredAppHandler = mPreferredApplication;
1.210 + NS_IF_ADDREF(*aPreferredAppHandler);
1.211 + return NS_OK;
1.212 +}
1.213 +
1.214 +NS_IMETHODIMP
1.215 +nsMIMEInfoBase::SetPreferredApplicationHandler(nsIHandlerApp * aPreferredAppHandler)
1.216 +{
1.217 + mPreferredApplication = aPreferredAppHandler;
1.218 + return NS_OK;
1.219 +}
1.220 +
1.221 +NS_IMETHODIMP
1.222 +nsMIMEInfoBase::GetPossibleApplicationHandlers(nsIMutableArray ** aPossibleAppHandlers)
1.223 +{
1.224 + if (!mPossibleApplications)
1.225 + mPossibleApplications = do_CreateInstance(NS_ARRAY_CONTRACTID);
1.226 +
1.227 + if (!mPossibleApplications)
1.228 + return NS_ERROR_OUT_OF_MEMORY;
1.229 +
1.230 + *aPossibleAppHandlers = mPossibleApplications;
1.231 + NS_IF_ADDREF(*aPossibleAppHandlers);
1.232 + return NS_OK;
1.233 +}
1.234 +
1.235 +NS_IMETHODIMP
1.236 +nsMIMEInfoBase::GetPreferredAction(nsHandlerInfoAction * aPreferredAction)
1.237 +{
1.238 + *aPreferredAction = mPreferredAction;
1.239 + return NS_OK;
1.240 +}
1.241 +
1.242 +NS_IMETHODIMP
1.243 +nsMIMEInfoBase::SetPreferredAction(nsHandlerInfoAction aPreferredAction)
1.244 +{
1.245 + mPreferredAction = aPreferredAction;
1.246 + return NS_OK;
1.247 +}
1.248 +
1.249 +NS_IMETHODIMP
1.250 +nsMIMEInfoBase::GetAlwaysAskBeforeHandling(bool * aAlwaysAsk)
1.251 +{
1.252 + *aAlwaysAsk = mAlwaysAskBeforeHandling;
1.253 +
1.254 + return NS_OK;
1.255 +}
1.256 +
1.257 +NS_IMETHODIMP
1.258 +nsMIMEInfoBase::SetAlwaysAskBeforeHandling(bool aAlwaysAsk)
1.259 +{
1.260 + mAlwaysAskBeforeHandling = aAlwaysAsk;
1.261 + return NS_OK;
1.262 +}
1.263 +
1.264 +/* static */
1.265 +nsresult
1.266 +nsMIMEInfoBase::GetLocalFileFromURI(nsIURI *aURI, nsIFile **aFile)
1.267 +{
1.268 + nsresult rv;
1.269 +
1.270 + nsCOMPtr<nsIFileURL> fileUrl = do_QueryInterface(aURI, &rv);
1.271 + if (NS_FAILED(rv)) {
1.272 + return rv;
1.273 + }
1.274 +
1.275 + nsCOMPtr<nsIFile> file;
1.276 + rv = fileUrl->GetFile(getter_AddRefs(file));
1.277 + if (NS_FAILED(rv)) {
1.278 + return rv;
1.279 + }
1.280 +
1.281 + file.forget(aFile);
1.282 + return NS_OK;
1.283 +}
1.284 +
1.285 +NS_IMETHODIMP
1.286 +nsMIMEInfoBase::LaunchWithFile(nsIFile* aFile)
1.287 +{
1.288 + nsresult rv;
1.289 +
1.290 + // it doesn't make any sense to call this on protocol handlers
1.291 + NS_ASSERTION(mClass == eMIMEInfo,
1.292 + "nsMIMEInfoBase should have mClass == eMIMEInfo");
1.293 +
1.294 + if (mPreferredAction == useSystemDefault) {
1.295 + return LaunchDefaultWithFile(aFile);
1.296 + }
1.297 +
1.298 + if (mPreferredAction == useHelperApp) {
1.299 + if (!mPreferredApplication)
1.300 + return NS_ERROR_FILE_NOT_FOUND;
1.301 +
1.302 + // at the moment, we only know how to hand files off to local handlers
1.303 + nsCOMPtr<nsILocalHandlerApp> localHandler =
1.304 + do_QueryInterface(mPreferredApplication, &rv);
1.305 + NS_ENSURE_SUCCESS(rv, rv);
1.306 +
1.307 + nsCOMPtr<nsIFile> executable;
1.308 + rv = localHandler->GetExecutable(getter_AddRefs(executable));
1.309 + NS_ENSURE_SUCCESS(rv, rv);
1.310 +
1.311 + nsAutoCString path;
1.312 + aFile->GetNativePath(path);
1.313 + return LaunchWithIProcess(executable, path);
1.314 + }
1.315 +
1.316 + return NS_ERROR_INVALID_ARG;
1.317 +}
1.318 +
1.319 +NS_IMETHODIMP
1.320 +nsMIMEInfoBase::LaunchWithURI(nsIURI* aURI,
1.321 + nsIInterfaceRequestor* aWindowContext)
1.322 +{
1.323 + // for now, this is only being called with protocol handlers; that
1.324 + // will change once we get to more general registerContentHandler
1.325 + // support
1.326 + NS_ASSERTION(mClass == eProtocolInfo,
1.327 + "nsMIMEInfoBase should be a protocol handler");
1.328 +
1.329 + if (mPreferredAction == useSystemDefault) {
1.330 + return LoadUriInternal(aURI);
1.331 + }
1.332 +
1.333 + if (mPreferredAction == useHelperApp) {
1.334 + if (!mPreferredApplication)
1.335 + return NS_ERROR_FILE_NOT_FOUND;
1.336 +
1.337 + return mPreferredApplication->LaunchWithURI(aURI, aWindowContext);
1.338 + }
1.339 +
1.340 + return NS_ERROR_INVALID_ARG;
1.341 +}
1.342 +
1.343 +void
1.344 +nsMIMEInfoBase::CopyBasicDataTo(nsMIMEInfoBase* aOther)
1.345 +{
1.346 + aOther->mSchemeOrType = mSchemeOrType;
1.347 + aOther->mDefaultAppDescription = mDefaultAppDescription;
1.348 + aOther->mExtensions = mExtensions;
1.349 +}
1.350 +
1.351 +/* static */
1.352 +already_AddRefed<nsIProcess>
1.353 +nsMIMEInfoBase::InitProcess(nsIFile* aApp, nsresult* aResult)
1.354 +{
1.355 + NS_ASSERTION(aApp, "Unexpected null pointer, fix caller");
1.356 +
1.357 + nsCOMPtr<nsIProcess> process = do_CreateInstance(NS_PROCESS_CONTRACTID,
1.358 + aResult);
1.359 + if (NS_FAILED(*aResult))
1.360 + return nullptr;
1.361 +
1.362 + *aResult = process->Init(aApp);
1.363 + if (NS_FAILED(*aResult))
1.364 + return nullptr;
1.365 +
1.366 + return process.forget();
1.367 +}
1.368 +
1.369 +/* static */
1.370 +nsresult
1.371 +nsMIMEInfoBase::LaunchWithIProcess(nsIFile* aApp, const nsCString& aArg)
1.372 +{
1.373 + nsresult rv;
1.374 + nsCOMPtr<nsIProcess> process = InitProcess(aApp, &rv);
1.375 + if (NS_FAILED(rv))
1.376 + return rv;
1.377 +
1.378 + const char *string = aArg.get();
1.379 +
1.380 + return process->Run(false, &string, 1);
1.381 +}
1.382 +
1.383 +/* static */
1.384 +nsresult
1.385 +nsMIMEInfoBase::LaunchWithIProcess(nsIFile* aApp, const nsString& aArg)
1.386 +{
1.387 + nsresult rv;
1.388 + nsCOMPtr<nsIProcess> process = InitProcess(aApp, &rv);
1.389 + if (NS_FAILED(rv))
1.390 + return rv;
1.391 +
1.392 + const char16_t *string = aArg.get();
1.393 +
1.394 + return process->Runw(false, &string, 1);
1.395 +}
1.396 +
1.397 +// nsMIMEInfoImpl implementation
1.398 +NS_IMETHODIMP
1.399 +nsMIMEInfoImpl::GetDefaultDescription(nsAString& aDefaultDescription)
1.400 +{
1.401 + if (mDefaultAppDescription.IsEmpty() && mDefaultApplication) {
1.402 + // Don't want to cache this, just in case someone resets the app
1.403 + // without changing the description....
1.404 + mDefaultApplication->GetLeafName(aDefaultDescription);
1.405 + } else {
1.406 + aDefaultDescription = mDefaultAppDescription;
1.407 + }
1.408 +
1.409 + return NS_OK;
1.410 +}
1.411 +
1.412 +NS_IMETHODIMP
1.413 +nsMIMEInfoImpl::GetHasDefaultHandler(bool * _retval)
1.414 +{
1.415 + *_retval = !mDefaultAppDescription.IsEmpty();
1.416 + if (mDefaultApplication) {
1.417 + bool exists;
1.418 + *_retval = NS_SUCCEEDED(mDefaultApplication->Exists(&exists)) && exists;
1.419 + }
1.420 + return NS_OK;
1.421 +}
1.422 +
1.423 +nsresult
1.424 +nsMIMEInfoImpl::LaunchDefaultWithFile(nsIFile* aFile)
1.425 +{
1.426 + if (!mDefaultApplication)
1.427 + return NS_ERROR_FILE_NOT_FOUND;
1.428 +
1.429 + nsAutoCString nativePath;
1.430 + aFile->GetNativePath(nativePath);
1.431 +
1.432 + return LaunchWithIProcess(mDefaultApplication, nativePath);
1.433 +}
1.434 +
1.435 +NS_IMETHODIMP
1.436 +nsMIMEInfoBase::GetPossibleLocalHandlers(nsIArray **_retval)
1.437 +{
1.438 + return NS_ERROR_NOT_IMPLEMENTED;
1.439 +}
