ClientIdentification::GuestState *ClientIdentification::current() const
{
// if we have no client identification, we can't find a current guest either
if (!processCode())
return NULL;
SecGuestRef guestRef = Server::connection().guestRef();
// try to deliver an already-cached entry
{
StLock<Mutex> _(mLock);
GuestMap::iterator it = mGuests.find(guestRef);
if (it != mGuests.end())
return &it->second;
}
// okay, make a new one (this may take a while)
CFRef<CFDictionaryRef> attributes = (guestRef == kSecNoGuest)
? NULL
: makeCFDictionary(1, kSecGuestAttributeCanonical, CFTempNumber(guestRef).get());
Server::active().longTermActivity();
CFRef<SecCodeRef> code;
switch (OSStatus rc = SecCodeCopyGuestWithAttributes(processCode(),
attributes, kSecCSDefaultFlags, &code.aref())) {
case noErr:
break;
case errSecCSUnsigned: // not signed; clearly not a host
case errSecCSNotAHost: // signed but not marked as a (potential) host
code = mClientProcess;
break;
case errSecCSNoSuchCode: // potential host, but...
if (guestRef == kSecNoGuest) { // ... no guests (yet), so return the process
code = mClientProcess;
break;
}
// else fall through // ... the guest we expected to be there isn't
default:
MacOSError::throwMe(rc);
}
StLock<Mutex> _(mLock);
GuestState &slot = mGuests[guestRef];
if (!slot.code) // if another thread didn't get here first...
slot.code = code;
return &slot;
}
CFDictionaryRef PolicyEngine::update(CFTypeRef target, SecAssessmentFlags flags, CFDictionaryRef context)
{
// update GKE
installExplicitSet(gkeAuthFile, gkeSigsFile);
AuthorityType type = typeFor(context, kAuthorityInvalid);
CFStringRef edit = CFStringRef(CFDictionaryGetValue(context, kSecAssessmentContextKeyUpdate));
CFDictionaryRef result;
if (CFEqual(edit, kSecAssessmentUpdateOperationAdd))
result = this->add(target, type, flags, context);
else if (CFEqual(edit, kSecAssessmentUpdateOperationRemove))
result = this->remove(target, type, flags, context);
else if (CFEqual(edit, kSecAssessmentUpdateOperationEnable))
result = this->enable(target, type, flags, context);
else if (CFEqual(edit, kSecAssessmentUpdateOperationDisable))
result = this->disable(target, type, flags, context);
else if (CFEqual(edit, kSecAssessmentUpdateOperationFind))
result = this->find(target, type, flags, context);
else
MacOSError::throwMe(errSecCSInvalidAttributeValues);
if (result == NULL)
result = makeCFDictionary(0); // success, no details
return result;
}