Added ability to define up to 5 IPv6 prefix delegation by user

[l2tpns.git] / dhcp6.c

diff --git a/dhcp6.c b/dhcp6.c
index e422df5..171c1f0 100644 (file)
--- a/dhcp6.c
+++ b/dhcp6.c
@@ -98,21 +98,33 @@ static void dhcp6_send_reply(sessionidt s, tunnelidt t, struct in6_addr *ip6_src
                }
                else
                {
+                       struct dhcp6_opt_h *p_opt_head;
+                       int r;
+                       uint16_t lenopt;
+
                        if (list_option.p_mess_hdr->type == DHCP6_REQUEST || list_option.p_opt_rapidcommit)
                        {
                                session[s].dhcpv6_prefix_iaid = ((struct dhcp6_opt_ia_pd *)list_option.p_opt_ia_pd)->iaid;
                        }
 
-                       p_opt->len = htons(sizeof(struct dhcp6_opt_ia_pd) - sizeof(*p_opt) + sizeof(struct dhcp6_opt_ia_prefix));
+                       p_opt_head = p_opt;
+                       lenopt = sizeof(struct dhcp6_opt_ia_pd) - sizeof(*p_opt);
+
                        p_opt = (struct dhcp6_opt_h *) &((struct dhcp6_opt_ia_pd *)p_opt)[1];
 
-                       ((struct dhcp6_opt_ia_prefix *)p_opt)->hdr.code = htons(D6_OPT_IAPREFIX);
-                       ((struct dhcp6_opt_ia_prefix *)p_opt)->hdr.len = htons(sizeof(struct dhcp6_opt_ia_prefix) - sizeof(*p_opt));
-                       ((struct dhcp6_opt_ia_prefix *)p_opt)->pref_lifetime= (config->dhcp6_preferred_lifetime > 0) ? htonl(config->dhcp6_preferred_lifetime) : 0xFFFFFFFF;
-                       ((struct dhcp6_opt_ia_prefix *)p_opt)->valid_lifetime= (config->dhcp6_valid_lifetime > 0) ? htonl(config->dhcp6_valid_lifetime) : 0xFFFFFFFF;
-                       ((struct dhcp6_opt_ia_prefix *)p_opt)->prefix_len = session[s].ipv6prefixlen;
-                       ((struct dhcp6_opt_ia_prefix *)p_opt)->prefix = session[s].ipv6route;
-                        p_opt = (struct dhcp6_opt_h *) &((struct dhcp6_opt_ia_prefix *)p_opt)[1]; // next option
+                       for (r = 0; r < MAXROUTE6 && session[s].route6[r].ipv6route.s6_addr[0] && session[s].route6[r].ipv6prefixlen; r++)
+                       {
+                               ((struct dhcp6_opt_ia_prefix *)p_opt)->hdr.code = htons(D6_OPT_IAPREFIX);
+                               ((struct dhcp6_opt_ia_prefix *)p_opt)->hdr.len = htons(sizeof(struct dhcp6_opt_ia_prefix) - sizeof(*p_opt));
+                               ((struct dhcp6_opt_ia_prefix *)p_opt)->pref_lifetime= (config->dhcp6_preferred_lifetime > 0) ? htonl(config->dhcp6_preferred_lifetime) : 0xFFFFFFFF;
+                               ((struct dhcp6_opt_ia_prefix *)p_opt)->valid_lifetime= (config->dhcp6_valid_lifetime > 0) ? htonl(config->dhcp6_valid_lifetime) : 0xFFFFFFFF;
+                               ((struct dhcp6_opt_ia_prefix *)p_opt)->prefix_len = session[s].route6[r].ipv6prefixlen;
+                               ((struct dhcp6_opt_ia_prefix *)p_opt)->prefix = session[s].route6[r].ipv6route;
+
+                                p_opt = (struct dhcp6_opt_h *) &((struct dhcp6_opt_ia_prefix *)p_opt)[1]; // next option
+                                lenopt += sizeof(struct dhcp6_opt_ia_prefix);
+                       }
+                       p_opt_head->len = htons(lenopt);
                }
        }
 
@@ -257,6 +269,46 @@ static void dhcp6_send_reply(sessionidt s, tunnelidt t, struct in6_addr *ip6_src
        tunnelsend(b, len + (((uint8_t *) p_ip6_hdr)-b), t); // send it...
 }
 
+static char * get_msg_type(uint8_t type)
+{
+       switch(type)
+       {
+               case DHCP6_SOLICIT:
+               {
+                       return "Solicit";
+               }
+               break;
+
+               case DHCP6_REQUEST:
+                       return "Request";
+               break;
+
+               case DHCP6_RENEW:
+                       return "Renew";
+               break;
+
+               case DHCP6_INFORMATION_REQUEST:
+                       return "Information Request";
+               break;
+
+               case DHCP6_REBIND:
+                       return "Rebind";
+               break;
+
+               case DHCP6_RELEASE:
+                       return "Release";
+               break;
+
+               case DHCP6_DECLINE:
+                       return "Decline";
+               break;
+
+               default:
+                       return "Unknown";
+               break;
+       }
+}
+
 void dhcpv6_process(sessionidt s, tunnelidt t, uint8_t *p, uint16_t l)
 {
        struct ip6_hdr *p_ip6_hdr_in;
@@ -270,9 +322,9 @@ void dhcpv6_process(sessionidt s, tunnelidt t, uint8_t *p, uint16_t l)
        p_ip6_hdr_in = (struct ip6_hdr *) p;
        p_mess_hdr = (struct dhcp6_mess_hdr *) (p + 48);
 
-       LOG(3, s, t, "Got DHCPv6 message Type: %d\n", p_mess_hdr->type);
+       LOG(3, s, t, "Got DHCPv6 message Type: %s(%d)\n", get_msg_type(p_mess_hdr->type), p_mess_hdr->type);
 
-       if (!session[s].ipv6route.s6_addr[0] || !session[s].ipv6prefixlen)
+       if (!session[s].route6[0].ipv6route.s6_addr[0] || !session[s].route6[0].ipv6prefixlen)
                return;
 
        p_opt = (struct dhcp6_opt_h *) &p_mess_hdr[1];
@@ -326,8 +378,6 @@ void dhcpv6_process(sessionidt s, tunnelidt t, uint8_t *p, uint16_t l)
        {
                case DHCP6_SOLICIT:
                {
-                       LOG(3, s, t, "..(Type %d = Solicit)\n", p_mess_hdr->type);
-
                        if (!list_option.p_opt_clientid)
                        {
                                LOG(3, s, t, "DHCPv6: error no Client-ID\n");
@@ -369,8 +419,6 @@ void dhcpv6_process(sessionidt s, tunnelidt t, uint8_t *p, uint16_t l)
 
                case DHCP6_REQUEST:
                {
-                       LOG(3, s, t, "..(Type %d = Request)\n", p_mess_hdr->type);
-
                        if (!list_option.p_opt_clientid)
                        {
                                LOG(3, s, t, "DHCPv6: error no Client-ID\n");
@@ -416,8 +464,6 @@ void dhcpv6_process(sessionidt s, tunnelidt t, uint8_t *p, uint16_t l)
 
                case DHCP6_RENEW:
                {
-                       LOG(3, s, t, "..(Type %d = Renew)\n", p_mess_hdr->type);
-
                        if (!list_option.p_opt_clientid)
                        {
                                LOG(3, s, t, "DHCPv6: error no Client-ID\n");
@@ -448,8 +494,6 @@ void dhcpv6_process(sessionidt s, tunnelidt t, uint8_t *p, uint16_t l)
 
                case DHCP6_INFORMATION_REQUEST:
                {
-                       LOG(3, s, t, "..(Type %d = Information Request)\n", p_mess_hdr->type);
-
                        if (!list_option.p_opt_clientid)
                        {
                                LOG(3, s, t, "DHCPv6: error no Client-ID\n");
@@ -462,24 +506,20 @@ void dhcpv6_process(sessionidt s, tunnelidt t, uint8_t *p, uint16_t l)
 
                case DHCP6_REBIND:
                {
-                       LOG(3, s, t, "..(Type %d = Rebind)\n", p_mess_hdr->type);
                }
                break;
 
                case DHCP6_RELEASE:
                {
-                       LOG(3, s, t, "..(Type %d = Release)\n", p_mess_hdr->type);
                }
                break;
 
                case DHCP6_DECLINE:
                {
-                       LOG(3, s, t, "..(Type %d = Decline)\n", p_mess_hdr->type);
                }
                break;
 
                default:
-                       LOG(3, s, t, "Got unknown DHCPv6 Type: %d\n", *(p + 38));
                break;
        }