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ee81fb441c
dhcp/dhcp-4.2.0-PPP.patch

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DHCPv6 over PPP support (#626514)
2010-11-09 16:00:03 +00:00
diff -up dhcp-4.2.0-P1/client/dhc6.c.PPP dhcp-4.2.0-P1/client/dhc6.c
--- dhcp-4.2.0-P1/client/dhc6.c.PPP 2010-11-05 10:47:37.000000000 +0100
+++ dhcp-4.2.0-P1/client/dhc6.c 2010-11-09 15:54:12.000000000 +0100
@@ -129,7 +129,7 @@ extern int stateless;
* is not how it is intended. Upcoming rearchitecting the client should
* address this "one daemon model."
*/
-void
+isc_result_t
form_duid(struct data_string *duid, const char *file, int line)
{
struct interface_info *ip;
@@ -141,6 +141,15 @@ form_duid(struct data_string *duid, cons
if (ip == NULL)
log_fatal("Impossible condition at %s:%d.", MDL);
+ while (ip && ip->hw_address.hbuf[0] == HTYPE_RESERVED) {
+ /* Try the other interfaces */
+ log_debug("Cannot form default DUID from interface %s.", ip->name);
+ ip = ip->next;
+ }
+ if (ip == NULL) {
+ return ISC_R_UNEXPECTED;
+ }
+
if ((ip->hw_address.hlen == 0) ||
(ip->hw_address.hlen > sizeof(ip->hw_address.hbuf)))
log_fatal("Impossible hardware address length at %s:%d.", MDL);
@@ -176,6 +185,8 @@ form_duid(struct data_string *duid, cons
memcpy(duid->buffer->data + 4, ip->hw_address.hbuf + 1,
ip->hw_address.hlen - 1);
}
+
+ return ISC_R_SUCCESS;
}
/*
@@ -5289,7 +5300,8 @@ make_client6_options(struct client_state
*/
if ((oc = lookup_option(&dhcpv6_universe, *op,
D6O_CLIENTID)) == NULL) {
- if (!option_cache(&oc, &default_duid, NULL, clientid_option,
+ if (default_duid.len == 0 ||
+ !option_cache(&oc, &default_duid, NULL, clientid_option,
MDL))
log_fatal("Failure assembling a DUID.");
diff -up dhcp-4.2.0-P1/client/dhclient.c.PPP dhcp-4.2.0-P1/client/dhclient.c
--- dhcp-4.2.0-P1/client/dhclient.c.PPP 2010-11-05 10:47:37.000000000 +0100
+++ dhcp-4.2.0-P1/client/dhclient.c 2010-11-09 15:37:26.000000000 +0100
@@ -911,8 +911,8 @@ main(int argc, char **argv) {
if (default_duid.buffer != NULL)
data_string_forget(&default_duid, MDL);
- form_duid(&default_duid, MDL);
- write_duid(&default_duid);
+ if (form_duid(&default_duid, MDL) == ISC_R_SUCCESS)
+ write_duid(&default_duid);
}
for (ip = interfaces ; ip != NULL ; ip = ip->next) {
diff -up dhcp-4.2.0-P1/common/bpf.c.PPP dhcp-4.2.0-P1/common/bpf.c
--- dhcp-4.2.0-P1/common/bpf.c.PPP 2010-11-05 10:47:37.000000000 +0100
+++ dhcp-4.2.0-P1/common/bpf.c 2010-11-09 15:42:42.000000000 +0100
@@ -599,6 +599,22 @@ get_hw_addr(const char *name, struct har
memcpy(&hw->hbuf[1], LLADDR(sa), sa->sdl_alen);
break;
#endif /* IFT_FDDI */
+#if defined(IFT_PPP)
+ case IFT_PPP:
+ if (local_family != AF_INET6)
+ log_fatal("Unsupported device type %d for \"%s\"",
+ sa->sdl_type, name);
+ hw->hlen = 0;
+ hw->hbuf[0] = HTYPE_RESERVED;
+ /* 0xdeadbeef should never occur on the wire,
+ * and is a signature that something went wrong.
+ */
+ hw->hbuf[1] = 0xde;
+ hw->hbuf[2] = 0xad;
+ hw->hbuf[3] = 0xbe;
+ hw->hbuf[4] = 0xef;
+ break;
+#endif
default:
log_fatal("Unsupported device type %d for \"%s\"",
sa->sdl_type, name);
diff -up dhcp-4.2.0-P1/common/lpf.c.PPP dhcp-4.2.0-P1/common/lpf.c
--- dhcp-4.2.0-P1/common/lpf.c.PPP 2010-11-05 10:47:37.000000000 +0100
+++ dhcp-4.2.0-P1/common/lpf.c 2010-11-09 15:45:40.000000000 +0100
@@ -502,6 +502,22 @@ get_hw_addr(const char *name, struct har
hw->hbuf[0] = HTYPE_FDDI;
memcpy(&hw->hbuf[1], sa->sa_data, 16);
break;
+#if defined(ARPHRD_PPP)
+ case ARPHRD_PPP:
+ if (local_family != AF_INET6)
+ log_fatal("Unsupported device type %d for \"%s\"",
+ sa->sa_family, name);
+ hw->hlen = 0;
+ hw->hbuf[0] = HTYPE_RESERVED;
+ /* 0xdeadbeef should never occur on the wire,
+ * and is a signature that something went wrong.
+ */
+ hw->hbuf[1] = 0xde;
+ hw->hbuf[2] = 0xad;
+ hw->hbuf[3] = 0xbe;
+ hw->hbuf[4] = 0xef;
+ break;
+#endif
default:
log_fatal("Unsupported device type %ld for \"%s\"",
(long int)sa->sa_family, name);
diff -up dhcp-4.2.0-P1/includes/dhcpd.h.PPP dhcp-4.2.0-P1/includes/dhcpd.h
--- dhcp-4.2.0-P1/includes/dhcpd.h.PPP 2010-11-05 10:47:37.000000000 +0100
+++ dhcp-4.2.0-P1/includes/dhcpd.h 2010-11-09 15:46:58.000000000 +0100
@@ -2733,7 +2733,7 @@ void dhcpv4_client_assignments(void);
void dhcpv6_client_assignments(void);
/* dhc6.c */
-void form_duid(struct data_string *duid, const char *file, int line);
+isc_result_t form_duid(struct data_string *duid, const char *file, int line);
void dhc6_lease_destroy(struct dhc6_lease **src, const char *file, int line);
void start_init6(struct client_state *client);
void start_info_request6(struct client_state *client);
diff -up dhcp-4.2.0-P1/includes/dhcp.h.PPP dhcp-4.2.0-P1/includes/dhcp.h
--- dhcp-4.2.0-P1/includes/dhcp.h.PPP 2010-11-05 10:47:37.000000000 +0100
+++ dhcp-4.2.0-P1/includes/dhcp.h 2010-11-09 15:48:53.000000000 +0100
@@ -80,6 +80,8 @@ struct dhcp_packet {
#define HTYPE_IEEE802 6 /* IEEE 802.2 Token Ring... */
#define HTYPE_FDDI 8 /* FDDI... */
+#define HTYPE_RESERVED 0 /* RFC 5494 */
+
/* Magic cookie validating dhcp options field (and bootp vendor
extensions field). */
#define DHCP_OPTIONS_COOKIE "\143\202\123\143"
diff -up dhcp-4.2.0-P1/server/dhcpv6.c.PPP dhcp-4.2.0-P1/server/dhcpv6.c
--- dhcp-4.2.0-P1/server/dhcpv6.c.PPP 2010-11-05 10:47:37.000000000 +0100
+++ dhcp-4.2.0-P1/server/dhcpv6.c 2010-11-09 15:50:17.000000000 +0100
@@ -300,6 +300,9 @@ generate_new_server_duid(void) {
if (p->hw_address.hlen > 0) {
break;
}
+ if (p->next == NULL && p->hw_address.hbuf[0] == HTYPE_RESERVED) {
+ log_error("Can not generate DUID from interfaces which do not have hardware addresses, please configure server-duid!");
+ }
}
if (p == NULL) {
return ISC_R_UNEXPECTED;
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