I have an application where I need to programmatically change the realm I proxy Accounting-Request messages to if the incoming realm is some known value. I have a preacct function that looks for the particular realm in the User-Name, and if it's there, it adds a Realm attrbute to request->packet->vps and a Proxy-To-Realm attribute to request->config_items. In radiusd.conf I put this before "suffix", so rlm_realm doesnt do anything. This sets up the proxy to the new realm, but the User-Name in the proxy packet still has the original realm, and I need to switch it to the new one.
I tried writing a pre-proxy function that looks for User-Name in request->proxy->vps, deletes it, and adds a new one with the my new realm substituted for the old one. That function appears to work, but radiusd crashes in rad_send (radius.c) in the following code block, on the line "if ((VENDOR...".
for (reply = packet->vps; reply; reply = reply->next) {
/*
* Ignore non-wire attributes
*/
if ((VENDOR(reply->attribute) == 0) &&
((reply->attribute & 0xFFFF) > 0xff)) {
continue;
}
....I suspect I mangled the request proxy packet somehow. Is there a better way to do this?
Dave
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