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path: root/accel-pppd/ipv6/dhcpv6.c
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Diffstat (limited to 'accel-pppd/ipv6/dhcpv6.c')
-rw-r--r--accel-pppd/ipv6/dhcpv6.c98
1 files changed, 50 insertions, 48 deletions
diff --git a/accel-pppd/ipv6/dhcpv6.c b/accel-pppd/ipv6/dhcpv6.c
index a80b6222..62f20bb0 100644
--- a/accel-pppd/ipv6/dhcpv6.c
+++ b/accel-pppd/ipv6/dhcpv6.c
@@ -64,25 +64,25 @@ static void ev_ses_started(struct ap_session *ses)
if (!ses->ipv6)
return;
-
+
sock = socket(AF_INET6, SOCK_DGRAM, 0);
if (!sock) {
log_ppp_error("dhcpv6: socket: %s\n", strerror(errno));
return;
}
-
- setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &f, sizeof(f));
+
+ setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &f, sizeof(f));
if (setsockopt(sock, SOL_SOCKET, SO_BINDTODEVICE, ses->ifname, strlen(ses->ifname))) {
log_ppp_error("ipv6_nd: setsockopt(SO_BINDTODEVICE): %s\n", strerror(errno));
close(sock);
return;
}
-
+
memset(&addr, 0, sizeof(addr));
addr.sin6_family = AF_INET6;
addr.sin6_port = htons(DHCPV6_SERV_PORT);
-
+
if (bind(sock, (struct sockaddr *)&addr, sizeof(addr))) {
log_ppp_error("dhcpv6: bind: %s\n", strerror(errno));
close(sock);
@@ -99,13 +99,13 @@ static void ev_ses_started(struct ap_session *ses)
close(sock);
return;
}
-
+
fcntl(sock, F_SETFL, O_NONBLOCK);
fcntl(sock, F_SETFD, fcntl(sock, F_GETFD) | FD_CLOEXEC);
pd = _malloc(sizeof(*pd));
memset(pd, 0, sizeof(*pd));
-
+
pd->pd.key = &pd_key;
list_add_tail(&pd->pd.entry, &ses->pd_list);
@@ -140,10 +140,10 @@ static void ev_ses_finished(struct ap_session *ses)
if (pd->clientid)
_free(pd->clientid);
-
+
if (ses->ipv6_dp)
ipdb_put_ipv6_prefix(ses, ses->ipv6_dp);
-
+
triton_md_unregister_handler(&pd->hnd, 1);
_free(pd);
@@ -261,7 +261,7 @@ static void dhcpv6_send_reply(struct dhcpv6_packet *req, struct dhcpv6_pd *pd, i
reply = dhcpv6_packet_alloc_reply(req, code);
if (!reply)
return;
-
+
list_for_each_entry(opt, &req->opt_list, entry) {
// IA_NA
@@ -294,7 +294,7 @@ static void dhcpv6_send_reply(struct dhcpv6_packet *req, struct dhcpv6_pd *pd, i
build_addr(a, ses->ipv6->peer_intf_id, &ia_addr->addr);
ia_addr->pref_lifetime = htonl(conf_pref_lifetime);
- ia_addr->valid_lifetime = htonl(conf_valid_lifetime);
+ ia_addr->valid_lifetime = htonl(conf_valid_lifetime);
}
list_for_each_entry(opt2, &opt->opt_list, entry) {
@@ -336,11 +336,11 @@ static void dhcpv6_send_reply(struct dhcpv6_packet *req, struct dhcpv6_pd *pd, i
opt1 = dhcpv6_option_alloc(reply, D6_OPTION_IA_PD, sizeof(struct dhcpv6_opt_ia_na) - sizeof(struct dhcpv6_opt_hdr));
memcpy(opt1->hdr + 1, opt->hdr + 1, ntohs(opt1->hdr->len));
-
+
ia_na = (struct dhcpv6_opt_ia_na *)opt1->hdr;
ia_na->T1 = conf_pref_lifetime == -1 ? -1 : htonl(conf_pref_lifetime / 2);
ia_na->T2 = conf_pref_lifetime == -1 ? -1 : htonl((conf_pref_lifetime * 4) / 5);
-
+
if (!ses->ipv6_dp)
ses->ipv6_dp = ipdb_get_ipv6_prefix(ses);
@@ -361,11 +361,11 @@ static void dhcpv6_send_reply(struct dhcpv6_packet *req, struct dhcpv6_pd *pd, i
list_for_each_entry(a, &ses->ipv6_dp->prefix_list, entry) {
opt2 = dhcpv6_nested_option_alloc(reply, opt1, D6_OPTION_IAPREFIX, sizeof(*ia_prefix) - sizeof(struct dhcpv6_opt_hdr));
ia_prefix = (struct dhcpv6_opt_ia_prefix *)opt2->hdr;
-
+
memcpy(&ia_prefix->prefix, &a->addr, sizeof(a->addr));
ia_prefix->prefix_len = a->prefix_len;
ia_prefix->pref_lifetime = htonl(conf_pref_lifetime);
- ia_prefix->valid_lifetime = htonl(conf_valid_lifetime);
+ ia_prefix->valid_lifetime = htonl(conf_valid_lifetime);
}
list_for_each_entry(opt2, &opt->opt_list, entry) {
@@ -396,7 +396,7 @@ static void dhcpv6_send_reply(struct dhcpv6_packet *req, struct dhcpv6_pd *pd, i
}
}
}
-
+
//insert_status(reply, opt1, D6_STATUS_Success);
}
@@ -450,7 +450,7 @@ static void dhcpv6_send_reply2(struct dhcpv6_packet *req, struct dhcpv6_pd *pd,
reply = dhcpv6_packet_alloc_reply(req, code);
if (!reply)
return;
-
+
list_for_each_entry(opt, &req->opt_list, entry) {
// IA_NA
@@ -472,7 +472,7 @@ static void dhcpv6_send_reply2(struct dhcpv6_packet *req, struct dhcpv6_pd *pd,
continue;
f1 = 0;
-
+
if (!f) {
list_for_each_entry(a, &ses->ipv6->addr_list, entry) {
build_addr(a, ses->ipv6->peer_intf_id, &addr);
@@ -490,12 +490,12 @@ static void dhcpv6_send_reply2(struct dhcpv6_packet *req, struct dhcpv6_pd *pd,
ia_addr = (struct dhcpv6_opt_ia_addr *)opt3->hdr;
if (f1) {
ia_addr->pref_lifetime = htonl(conf_pref_lifetime);
- ia_addr->valid_lifetime = htonl(conf_valid_lifetime);
+ ia_addr->valid_lifetime = htonl(conf_valid_lifetime);
} else {
ia_addr->pref_lifetime = 0;
ia_addr->valid_lifetime = 0;
- insert_status(reply, opt3, D6_STATUS_NotOnLink);
+ goto out;
}
}
}
@@ -510,14 +510,17 @@ static void dhcpv6_send_reply2(struct dhcpv6_packet *req, struct dhcpv6_pd *pd,
} else if (ntohs(opt->hdr->code) == D6_OPTION_IA_PD) {
opt1 = dhcpv6_option_alloc(reply, D6_OPTION_IA_PD, sizeof(struct dhcpv6_opt_ia_na) - sizeof(struct dhcpv6_opt_hdr));
memcpy(opt1->hdr + 1, opt->hdr + 1, ntohs(opt1->hdr->len));
-
+
ia_na = (struct dhcpv6_opt_ia_na *)opt1->hdr;
ia_na->T1 = conf_pref_lifetime == -1 ? -1 : htonl(conf_pref_lifetime / 2);
ia_na->T2 = conf_pref_lifetime == -1 ? -1 : htonl((conf_pref_lifetime * 4) / 5);
-
+
if (!ses->ipv6_dp)
ses->ipv6_dp = ipdb_get_ipv6_prefix(req->ses);
+ if (!ses->ipv6_dp)
+ goto out;
+
f3 = 0;
list_for_each_entry(opt2, &opt->opt_list, entry) {
@@ -547,12 +550,12 @@ static void dhcpv6_send_reply2(struct dhcpv6_packet *req, struct dhcpv6_pd *pd,
if (f1) {
ia_prefix->pref_lifetime = htonl(conf_pref_lifetime);
- ia_prefix->valid_lifetime = htonl(conf_valid_lifetime);
+ ia_prefix->valid_lifetime = htonl(conf_valid_lifetime);
} else {
ia_prefix->pref_lifetime = 0;
ia_prefix->valid_lifetime = 0;
- insert_status(reply, opt3, D6_STATUS_NotOnLink);
+ goto out;
}
}
}
@@ -561,7 +564,6 @@ static void dhcpv6_send_reply2(struct dhcpv6_packet *req, struct dhcpv6_pd *pd,
pd->dp_iaid = ia_na->iaid;
f2 = 1;
}
-
// Option Request
} else if (ntohs(opt->hdr->code) == D6_OPTION_ORO)
insert_oro(reply, opt);
@@ -579,6 +581,7 @@ static void dhcpv6_send_reply2(struct dhcpv6_packet *req, struct dhcpv6_pd *pd,
sendto(pd->hnd.fd, reply->hdr, reply->endptr - (void *)reply->hdr, 0, (struct sockaddr *)&req->addr, sizeof(req->addr));
+out:
dhcpv6_packet_free(reply);
}
@@ -633,7 +636,7 @@ static void dhcpv6_recv_request(struct dhcpv6_packet *req)
log_ppp_error("dhcpv6: unmatched Client-ID option\n");
return;
}
-
+
dhcpv6_send_reply(req, pd, D6_REPLY);
}
@@ -661,20 +664,20 @@ static void dhcpv6_recv_renew(struct dhcpv6_packet *req)
log_ppp_error("dhcpv6: no Request was received\n");
return;
}
-
+
if (req->clientid->hdr.len != pd->clientid->hdr.len ||
memcmp(req->clientid, pd->clientid, ntohs(pd->clientid->hdr.len) + sizeof(struct dhcpv6_opt_hdr))) {
log_ppp_error("dhcpv6: unmatched Client-ID option\n");
return;
}
-
+
dhcpv6_send_reply(req, pd, D6_REPLY);
}
static void dhcpv6_recv_information_request(struct dhcpv6_packet *req)
{
struct dhcpv6_pd *pd = req->pd;
-
+
if (req->rapid_commit) {
log_ppp_error("dhcpv6: unexpected Rapid-Commit option\n");
return;
@@ -699,14 +702,13 @@ static void dhcpv6_recv_rebind(struct dhcpv6_packet *req)
return;
}
- if (!pd->clientid) {
- pd->clientid = _malloc(sizeof(struct dhcpv6_opt_hdr) + ntohs(req->clientid->hdr.len));
- memcpy(pd->clientid, req->clientid, sizeof(struct dhcpv6_opt_hdr) + ntohs(req->clientid->hdr.len));
- } else if (pd->clientid->hdr.len != req->clientid->hdr.len || memcmp(pd->clientid, req->clientid, sizeof(struct dhcpv6_opt_hdr) + ntohs(req->clientid->hdr.len))) {
+ if (!pd->clientid)
+ return;
+ else if (pd->clientid->hdr.len != req->clientid->hdr.len || memcmp(pd->clientid, req->clientid, sizeof(struct dhcpv6_opt_hdr) + ntohs(req->clientid->hdr.len))) {
log_ppp_error("dhcpv6: unmatched Client-ID option\n");
return;
}
-
+
req->serverid = &conf_serverid;
dhcpv6_send_reply2(req, pd, D6_REPLY);
@@ -808,19 +810,19 @@ static void add_dnssl(const char *val)
n++;
else
n += 2;
-
+
if (n > 255) {
log_error("dnsv6: dnssl '%s' is too long\n", val);
return;
}
-
+
if (!conf_dnssl)
conf_dnssl = _malloc(n);
else
conf_dnssl = _realloc(conf_dnssl, conf_dnssl_size + n);
-
+
buf = conf_dnssl + conf_dnssl_size;
-
+
while (1) {
ptr = strchr(val, '.');
if (!ptr)
@@ -838,7 +840,7 @@ static void add_dnssl(const char *val)
break;
}
}
-
+
conf_dnssl_size += n;
}
@@ -846,12 +848,12 @@ static void load_dns(void)
{
struct conf_sect_t *s = conf_get_section("ipv6-dns");
struct conf_option_t *opt;
-
+
if (!s)
return;
-
+
conf_dns_count = 0;
-
+
if (conf_dnssl)
_free(conf_dnssl);
conf_dnssl = NULL;
@@ -888,7 +890,7 @@ static uint64_t parse_serverid(const char *opt)
if (sscanf(opt, "%x:%x:%x:%x", &n[0], &n[1], &n[2], &n[3]) != 4)
goto err;
-
+
for (i = 0; i < 4; i++) {
if (n[i] < 0 || n[i] > 0xffff)
goto err;
@@ -910,19 +912,19 @@ static void load_config(void)
opt = conf_get_opt("ipv6-dhcp", "verbose");
if (opt)
conf_verbose = atoi(opt);
-
+
opt = conf_get_opt("ipv6-dhcp", "pref-lifetime");
if (opt)
conf_pref_lifetime = atoi(opt);
-
+
opt = conf_get_opt("ipv6-dhcp", "valid-lifetime");
if (opt)
conf_valid_lifetime = atoi(opt);
-
+
opt = conf_get_opt("ipv6-dhcp", "route-via-gw");
if (opt)
conf_route_via_gw = atoi(opt);
-
+
opt = conf_get_opt("ipv6-dhcp", "server-id");
if (opt)
id = parse_serverid(opt);
@@ -935,7 +937,7 @@ static void load_config(void)
conf_serverid.duid.u.ll.htype = htons(27);
//conf_serverid.duid.u.llt.time = htonl(t - t0);
*(uint64_t *)conf_serverid.duid.u.ll.addr = id;
-
+
load_dns();
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-09-20 09:53:03 +0000