Hi,
This patch aims to handle IPv6 RADIUS attributes. The current ppp does
not handle them and raise an error that looks like 'rc_read_dictionary:
invalid type on line 89 of dictionary /etc/radiusclient/dictionary'.
I use those attributes to put it into the radvd conf from
/run/vpn/radvd-user.${PPP_IFACE}.conf.
From 5c0cac0eeecc32e5023d353a8420633827800e8e Mon Sep 17 00:00:00 2001
From: Benjamin Cama <benoar@xxxxxxxx>
Date: Sun, 11 Oct 2015 18:08:11 +0200
Subject: [PATCH] Handle IPv6 RADIUS attributes
---
pppd/plugins/radius/avpair.c | 26 +++++++++++++++++++++++++-
pppd/plugins/radius/dict.c | 12 ++++++++++++
pppd/plugins/radius/radiusclient.h | 11 +++++++++++
3 files changed, 48 insertions(+), 1 deletion(-)
diff --git a/pppd/plugins/radius/avpair.c b/pppd/plugins/radius/avpair.c
index 716d23f..7536941 100644
--- a/pppd/plugins/radius/avpair.c
+++ b/pppd/plugins/radius/avpair.c
@@ -222,6 +222,9 @@ VALUE_PAIR *rc_avpair_gen (AUTH_HDR *auth)
{
case PW_TYPE_STRING:
+ case PW_TYPE_IFID:
+ case PW_TYPE_IPV6ADDR:
+ case PW_TYPE_IPV6PREFIX:
memcpy (pair->strvalue, (char *) ptr,
(size_t) attrlen);
pair->strvalue[attrlen] = '\0';
pair->lvalue = attrlen;
@@ -692,9 +695,10 @@ int rc_avpair_parse (char *buffer, VALUE_PAIR
**first_pair)
int rc_avpair_tostr (VALUE_PAIR *pair, char *name, int ln, char *value,
int lv)
{
DICT_VALUE *dval;
- char buffer[32];
+ char buffer[INET6_ADDRSTRLEN + 4]; // for a prefix:
addr + '/' + prefixlen
struct in_addr inad;
unsigned char *ptr;
+ char *str;
*name = *value = '\0';
@@ -753,6 +757,26 @@ int rc_avpair_tostr (VALUE_PAIR *pair, char *name,
int ln, char *value, int lv)
strncpy(value, buffer, lv-1);
break;
+ case PW_TYPE_IFID:
+ ptr = pair->strvalue;
+ snprintf(buffer, sizeof (buffer), "%x:%x:%x:%x",
+ (ptr[0] << 8) + ptr[1], (ptr[2] << 8) + ptr[3],
+ (ptr[4] << 8) + ptr[5], (ptr[6] << 8) +
ptr[7]);
+ strncpy(value, buffer, lv-1);
+ break;
+
+ case PW_TYPE_IPV6ADDR:
+ inet_ntop(AF_INET6, pair->strvalue, buffer, sizeof
(buffer));
+ strncpy(value, buffer, lv-1);
+ break;
+
+ case PW_TYPE_IPV6PREFIX:
+ inet_ntop(AF_INET6, pair->strvalue + 2, buffer, sizeof
(buffer));
+ str = buffer + strlen(buffer);
+ snprintf(str, sizeof (buffer) - (str - buffer), "/%d",
*(pair->strvalue + 1));
+ strncpy(value, buffer, lv-1);
+ break;
+
default:
error("rc_avpair_tostr: unknown attribute type %d",
pair->type);
return (-1);
diff --git a/pppd/plugins/radius/dict.c b/pppd/plugins/radius/dict.c
index 72b3e70..3b2add2 100644
--- a/pppd/plugins/radius/dict.c
+++ b/pppd/plugins/radius/dict.c
@@ -158,6 +158,18 @@ int rc_read_dictionary (char *filename)
{
type = PW_TYPE_DATE;
}
+ else if (strcmp (typestr, "ifid") == 0)
+ {
+ type = PW_TYPE_IFID;
+ }
+ else if (strcmp (typestr, "ipv6addr") == 0)
+ {
+ type = PW_TYPE_IPV6ADDR;
+ }
+ else if (strcmp (typestr, "ipv6prefix") == 0)
+ {
+ type = PW_TYPE_IPV6PREFIX;
+ }
else
{
error("rc_read_dictionary: invalid type
on line %d of dictionary %s",
diff --git a/pppd/plugins/radius/radiusclient.h
b/pppd/plugins/radius/radiusclient.h
index 51b959a..ab4ef2d 100644
--- a/pppd/plugins/radius/radiusclient.h
+++ b/pppd/plugins/radius/radiusclient.h
@@ -77,6 +77,17 @@ typedef struct pw_auth_hdr
#define PW_TYPE_INTEGER 1
#define PW_TYPE_IPADDR 2
#define PW_TYPE_DATE 3
+#define PW_TYPE_ABINARY 4
+#define PW_TYPE_OCTETS 5
+#define PW_TYPE_IFID 6
+#define PW_TYPE_IPV6ADDR 7
+#define PW_TYPE_IPV6PREFIX 8
+#define PW_TYPE_BYTE 9
+#define PW_TYPE_SHORT 10
+#define PW_TYPE_ETHERNET 11
+#define PW_TYPE_SIGNED 12
+#define PW_TYPE_COMBO_IP 13
+#define PW_TYPE_TLV 14
/* standard RADIUS codes */
--
2.1.4
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