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Bug 675356 - Dmg files sometimes not handled correctly. r=josh

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This commit is contained in:
Steven Michaud 2012-01-17 16:58:39 -06:00
parent a7ec78d445
commit 38a826cf58
1 changed files with 140 additions and 25 deletions
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165
uriloader/exthandler/mac/nsOSHelperAppService.mm
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@ -248,6 +248,77 @@ NS_IMETHODIMP nsOSHelperAppService::GetFromTypeAndExtension(const nsACString& aT
return nsExternalHelperAppService::GetFromTypeAndExtension(aType, aFileExt, aMIMEInfo);
}
// Returns the MIME types an application bundle explicitly claims to handle.
// Returns NULL if aAppRef doesn't explicitly claim to handle any MIME types.
// If the return value is non-NULL, the caller is responsible for freeing it.
// This isn't necessarily the same as the MIME types the application bundle
// is registered to handle in the Launch Services database. (For example
// the Preview application is normally registered to handle the application/pdf
// MIME type, even though it doesn't explicitly claim to handle *any* MIME
// types in its Info.plist. This is probably because Preview does explicitly
// claim to handle the com.adobe.pdf UTI, and Launch Services somehow
// translates this into a claim to support the application/pdf MIME type.
// Launch Services doesn't provide any APIs (documented or undocumented) to
// query which MIME types a given application is registered to handle. So any
// app that wants this information (e.g. the Default Apps pref pane) needs to
// iterate through the entire Launch Services database -- a process which can
// take several seconds.)
static CFArrayRef GetMIMETypesHandledByApp(FSRef *aAppRef)
{
CFURLRef appURL = ::CFURLCreateFromFSRef(kCFAllocatorDefault, aAppRef);
if (!appURL) {
return NULL;
}
CFDictionaryRef infoDict = ::CFBundleCopyInfoDictionaryForURL(appURL);
::CFRelease(appURL);
if (!infoDict) {
return NULL;
}
CFTypeRef cfObject = ::CFDictionaryGetValue(infoDict, CFSTR("CFBundleDocumentTypes"));
::CFRelease(infoDict);
if (!cfObject || (::CFGetTypeID(cfObject) != ::CFArrayGetTypeID())) {
return NULL;
}
CFArrayRef docTypes = static_cast<CFArrayRef>(cfObject);
CFIndex docTypesCount = ::CFArrayGetCount(docTypes);
if (docTypesCount == 0) {
return NULL;
}
CFMutableArrayRef mimeTypes =
::CFArrayCreateMutable(kCFAllocatorDefault, 0, &kCFTypeArrayCallBacks);
for (CFIndex i = 0; i < docTypesCount; ++i) {
cfObject = ::CFArrayGetValueAtIndex(docTypes, i);
if (!cfObject || (::CFGetTypeID(cfObject) != ::CFDictionaryGetTypeID())) {
continue;
}
CFDictionaryRef typeDict = static_cast<CFDictionaryRef>(cfObject);
// When this key is present (on OS X 10.5 and later), its contents
// take precedence over CFBundleTypeMIMETypes (and CFBundleTypeExtensions
// and CFBundleTypeOSTypes).
cfObject = ::CFDictionaryGetValue(typeDict, CFSTR("LSItemContentTypes"));
if (cfObject && (::CFGetTypeID(cfObject) == ::CFArrayGetTypeID())) {
continue;
}
cfObject = ::CFDictionaryGetValue(typeDict, CFSTR("CFBundleTypeMIMETypes"));
if (!cfObject || (::CFGetTypeID(cfObject) != ::CFArrayGetTypeID())) {
continue;
}
CFArrayRef mimeTypeHolder = static_cast<CFArrayRef>(cfObject);
CFArrayAppendArray(mimeTypes, mimeTypeHolder,
::CFRangeMake(0, ::CFArrayGetCount(mimeTypeHolder)));
}
if (!::CFArrayGetCount(mimeTypes)) {
::CFRelease(mimeTypes);
mimeTypes = NULL;
}
return mimeTypes;
}
// aMIMEType and aFileExt might not match, If they don't we set *aFound to
// false and return a minimal nsIMIMEInfo structure.
already_AddRefed<nsIMIMEInfo>
@ -281,22 +352,26 @@ nsOSHelperAppService::GetMIMEInfoFromOS(const nsACString& aMIMEType,
FSRef typeAppFSRef;
FSRef extAppFSRef;
CFStringRef cfMIMEType = NULL;
if (!aMIMEType.IsEmpty()) {
CFURLRef appURL = NULL;
// CFStringCreateWithCString() can fail even if we're not out of memory --
// for example if the 'cStr' parameter is something very wierd (like "ÿÿ~"
// aka "\xFF\xFF~"), or possibly if it can't be interpreted as using what's
// specified in the 'encoding' parameter. See bug 548719.
CFStringRef CFType = ::CFStringCreateWithCString(NULL, flatType.get(), kCFStringEncodingUTF8);
if (CFType) {
err = ::LSCopyApplicationForMIMEType(CFType, kLSRolesAll, &appURL);
cfMIMEType = ::CFStringCreateWithCString(NULL, flatType.get(),
kCFStringEncodingUTF8);
if (cfMIMEType) {
err = ::LSCopyApplicationForMIMEType(cfMIMEType, kLSRolesAll, &appURL);
if ((err == noErr) && appURL && ::CFURLGetFSRef(appURL, &typeAppFSRef)) {
haveAppForType = true;
PR_LOG(mLog, PR_LOG_DEBUG, ("LSCopyApplicationForMIMEType found a default application\n"));
}
if (appURL)
if (appURL) {
::CFRelease(appURL);
::CFRelease(CFType);
}
::CFRelease(cfMIMEType);
}
}
if (!aFileExt.IsEmpty()) {
@ -304,15 +379,15 @@ nsOSHelperAppService::GetMIMEInfoFromOS(const nsACString& aMIMEType,
// for example if the 'cStr' parameter is something very wierd (like "ÿÿ~"
// aka "\xFF\xFF~"), or possibly if it can't be interpreted as using what's
// specified in the 'encoding' parameter. See bug 548719.
CFStringRef CFExt = ::CFStringCreateWithCString(NULL, flatExt.get(), kCFStringEncodingUTF8);
if (CFExt) {
err = ::LSGetApplicationForInfo(kLSUnknownType, kLSUnknownCreator, CFExt,
CFStringRef cfExt = ::CFStringCreateWithCString(NULL, flatExt.get(), kCFStringEncodingUTF8);
if (cfExt) {
err = ::LSGetApplicationForInfo(kLSUnknownType, kLSUnknownCreator, cfExt,
kLSRolesAll, &extAppFSRef, nsnull);
if (err == noErr) {
haveAppForExt = true;
PR_LOG(mLog, PR_LOG_DEBUG, ("LSGetApplicationForInfo found a default application\n"));
}
::CFRelease(CFExt);
::CFRelease(cfExt);
}
}
@ -329,13 +404,52 @@ nsOSHelperAppService::GetMIMEInfoFromOS(const nsACString& aMIMEType,
*aFound = true;
}
} else if (haveAppForExt) {
// If aMIMEType isn't empty, it doesn't match aFileExt.
// If aMIMEType isn't empty, it doesn't match aFileExt, which should mean
// that we haven't found a matching app. But make an exception for an app
// that also explicitly claims to handle aMIMEType, or which doesn't claim
// to handle any MIME types. This helps work around the following Apple
// design flaw:
//
// Launch Services is somewhat unreliable about registering Apple apps to
// handle MIME types. Probably this is because Apple has officially
// deprecated support for MIME types (in favor of UTIs). As a result,
// most of Apple's own apps don't explicitly claim to handle any MIME
// types (instead they claim to handle one or more UTIs). So Launch
// Services must contain logic to translate support for a given UTI into
// support for one or more MIME types, and it doesn't always do this
// correctly. For example DiskImageMounter isn't (by default) registered
// to handle the application/x-apple-diskimage MIME type. See bug 675356.
//
// Apple has also deprecated support for file extensions, and Apple apps
// also don't register to handle them. But for some reason Launch Services
// is (apparently) better about translating support for a given UTI into
// support for one or more file extensions. It's not at all clear why.
if (aMIMEType.IsEmpty()) {
extAppIsDefault = true;
*aFound = true;
} else {
CFArrayRef extAppMIMETypes = GetMIMETypesHandledByApp(&extAppFSRef);
if (extAppMIMETypes) {
if (cfMIMEType) {
if (::CFArrayContainsValue(extAppMIMETypes,
::CFRangeMake(0, ::CFArrayGetCount(extAppMIMETypes)),
cfMIMEType)) {
extAppIsDefault = true;
*aFound = true;
}
}
::CFRelease(extAppMIMETypes);
} else {
extAppIsDefault = true;
*aFound = true;
}
}
}
if (cfMIMEType) {
::CFRelease(cfMIMEType);
}
if (aMIMEType.IsEmpty()) {
if (haveAppForExt) {
// If aMIMEType is empty and we've found a default app for aFileExt, try
@ -382,26 +496,26 @@ nsOSHelperAppService::GetMIMEInfoFromOS(const nsACString& aMIMEType,
return nsnull;
}
CFStringRef CFAppName = NULL;
CFStringRef cfAppName = NULL;
if (typeAppIsDefault) {
app->InitWithFSRef(&typeAppFSRef);
::LSCopyItemAttribute((const FSRef *) &typeAppFSRef, kLSRolesAll,
kLSItemDisplayName, (CFTypeRef *) &CFAppName);
kLSItemDisplayName, (CFTypeRef *) &cfAppName);
} else {
app->InitWithFSRef(&extAppFSRef);
::LSCopyItemAttribute((const FSRef *) &extAppFSRef, kLSRolesAll,
kLSItemDisplayName, (CFTypeRef *) &CFAppName);
kLSItemDisplayName, (CFTypeRef *) &cfAppName);
}
if (CFAppName) {
if (cfAppName) {
nsAutoTArray<UniChar, 255> buffer;
CFIndex appNameLength = ::CFStringGetLength(CFAppName);
CFIndex appNameLength = ::CFStringGetLength(cfAppName);
buffer.SetLength(appNameLength);
::CFStringGetCharacters(CFAppName, CFRangeMake(0, appNameLength),
::CFStringGetCharacters(cfAppName, CFRangeMake(0, appNameLength),
buffer.Elements());
nsAutoString appName;
appName.Assign(buffer.Elements(), appNameLength);
mimeInfoMac->SetDefaultDescription(appName);
::CFRelease(CFAppName);
::CFRelease(cfAppName);
}
mimeInfoMac->SetDefaultApplication(app);
@ -424,21 +538,22 @@ nsOSHelperAppService::GetMIMEInfoFromOS(const nsACString& aMIMEType,
mimeInfoMac->AppendExtension(preferredExt);
}
CFStringRef CFType = ::CFStringCreateWithCString(NULL, mimeType.get(), kCFStringEncodingUTF8);
CFStringRef CFTypeDesc = NULL;
if (::LSCopyKindStringForMIMEType(CFType, &CFTypeDesc) == noErr) {
CFStringRef cfType = ::CFStringCreateWithCString(NULL, mimeType.get(), kCFStringEncodingUTF8);
CFStringRef cfTypeDesc = NULL;
if (::LSCopyKindStringForMIMEType(cfType, &cfTypeDesc) == noErr) {
nsAutoTArray<UniChar, 255> buffer;
CFIndex typeDescLength = ::CFStringGetLength(CFTypeDesc);
CFIndex typeDescLength = ::CFStringGetLength(cfTypeDesc);
buffer.SetLength(typeDescLength);
::CFStringGetCharacters(CFTypeDesc, CFRangeMake(0, typeDescLength),
::CFStringGetCharacters(cfTypeDesc, CFRangeMake(0, typeDescLength),
buffer.Elements());
nsAutoString typeDesc;
typeDesc.Assign(buffer.Elements(), typeDescLength);
mimeInfoMac->SetDescription(typeDesc);
}
if (CFTypeDesc)
::CFRelease(CFTypeDesc);
::CFRelease(CFType);
if (cfTypeDesc) {
::CFRelease(cfTypeDesc);
}
::CFRelease(cfType);
}
PR_LOG(mLog, PR_LOG_DEBUG, ("OS gave us: type '%s' found '%i'\n", mimeType.get(), *aFound));