Re: IPSec not a "supported" protocol for PPP interfaces?

Let me RECANT that - logic is correct upon opening my eyes a little more. Allan is surely right...

If I'm right, I think the bug is in this line of code, where you're examining before the beginning of the array (0 based indices I assume). protoCount begins one too high, right? Do you want for (idx=0;idx< protoCount;++idx) ?

SCNetworkProtocolRef curProto = CFArrayGetValueAtIndex(protocols, protoCount);

From docs:

The index of the value to retrieve. If the index is outside the index space of theArray (0 to N-1 inclusive (where N is the count of theArray), the behavior is undefined.

On Jan 12, 2008, at 3:05 PM, email@hidden wrote:

Message: 1
Date: Fri, 11 Jan 2008 23:27:11 -0800
From: Allan Nathanson <email@hidden>
Subject: Re: IPSec not a "supported" protocol for PPP interfaces?
To: Nathan Duran <email@hidden>
Cc: email@hidden
Message-ID: <email@hidden">email@hidden>
Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes

Sorry for the delay in responding (it's been a busy week for me).

You've found a a bug! The IPSec configuration is actually associated
with the interface and would be accessible via the
SCNetworkInterface(Get|Set)ExtendedInterfaceConfiguration APIs. Can
you kindly file a bug report.

- Allan

On Jan 10, 2008, at 3:50 PM, Nathan Duran wrote:

On Dec 20, 2007, at 10:28 AM, Allan Nathanson wrote:

"IPSec" is not a protocol type.

OK, so why, when I call SCNetworkServiceCopyProtocols on an Apple
created L2TP service, is there one named "IPSec" in the array that
is returned?

CFArrayRef services = SCNetworkServiceCopyAll(prefs);
int serviceCount = CFArrayGetCount(services);

while ( serviceCount-- )
{
SCNetworkServiceRef curService = CFArrayGetValueAtIndex(services,
serviceCount);
CFStringRef serviceName = SCNetworkServiceGetName(curService);

if ( CFEqual(serviceName, CFSTR("VPN (L2TP)")) )
{
SCNetworkInterfaceRef firstLayer =
SCNetworkServiceGetInterface(curService);
CFArrayRef supportedProtocols =
SCNetworkInterfaceGetSupportedProtocolTypes(firstLayer);

CFShow(supportedProtocols);

CFArrayRef protocols = SCNetworkServiceCopyProtocols(curService);
int protoCount = CFArrayGetCount(protocols);

while ( protoCount-- )
{
SCNetworkProtocolRef curProto = CFArrayGetValueAtIndex(protocols,
protoCount);
CFStringRef protoName =
SCNetworkProtocolGetProtocolType(curProto);
CFDictionaryRef protoConfig =
SCNetworkProtocolGetConfiguration(curProto);

CFShow(protoName); //Second element will be "IPSec"
CFShow(protoConfig);
}
}
}