static OSStatus WorkaroundNetworkPrefsBug(CFDictionaryRef *entitiesDictPtr)
// If this is an Ethernet interface and LCPEchoEnabled is false,
// set it to true. This works around what I think is a bug in
// the Network preferences panel <rdar://problem/3182846> where the
// LCPEchoEnabled flag is mysteriously set to false for PCI Ethernet
// interfaces.
{
OSStatus err;
CFStringRef hardwarePath[2];
CFStringRef lcpPath[2];
CFStringRef hardwareStr;
CFNumberRef lcpValue;
long enabled;
hardwarePath[0] = kSCEntNetInterface;
hardwarePath[1] = kSCPropNetInterfaceHardware;
lcpPath[0] = kSCEntNetPPP;
lcpPath[1] = kSCPropNetPPPLCPEchoEnabled;
hardwareStr = NULL; // just to make debugging easier
lcpValue = NULL;
err = noErr;
if ( CFQDictionaryGetValueAtPath(*entitiesDictPtr, (const void **) hardwarePath, 2, (const void **) &hardwareStr) == noErr
&& CFEqual(hardwareStr, kSCEntNetEthernet)
&& CFQDictionaryGetValueAtPath(*entitiesDictPtr, (const void **) lcpPath, 2, (const void **) &lcpValue) == noErr
&& CFNumberGetValue(lcpValue, kCFNumberLongType, &enabled)
&& (enabled == 0) ) {
CFMutableDictionaryRef newDict;
CFNumberRef numRef;
if ( ! gRunQuiet ) {
fprintf(stderr, "Applied workaround\n");
}
numRef = NULL;
newDict = CFDictionaryCreateMutableCopy(NULL, 0, *entitiesDictPtr);
err = CFQError(newDict);
if (err == noErr) {
enabled = true;
numRef = CFNumberCreate(NULL, kCFNumberLongType, &enabled);
err = CFQError(numRef);
}
if (err == noErr) {
err = CFQDictionarySetValueAtPath(newDict, (const void **) lcpPath, 2, numRef);
}
if (err == noErr) {
CFQRelease(*entitiesDictPtr);
*entitiesDictPtr = newDict;
newDict = NULL;
}
CFQRelease(newDict);
CFQRelease(numRef);
}
return err;
}
extern pascal OSStatus CFQDictionaryGetValueAtPathArray(CFDictionaryRef dict,
CFArrayRef path,
const void **result)
// See comment in header.
{
OSStatus err;
CFTypeRef * pathElements;
assert( dict != NULL);
assert( path != NULL);
assert( result != NULL);
err = PathArrayHelper(path, &pathElements);
if (err == noErr) {
err = CFQDictionaryGetValueAtPath(dict, pathElements, CFArrayGetCount(path), result);
}
if (pathElements != NULL) {
free(pathElements);
}
return err;
}
