/**
* Copyright (C) 2013 Steven Barth <steven@midlink.org>
+ * Copyright (C) 2016 Hans Dedecker <dedeckeh@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License v2 as published by
#include <arpa/inet.h>
#include <sys/timerfd.h>
-
+static void free_dhcpv6_assignment(struct dhcpv6_assignment *c);
static void reconf_timer(struct uloop_timeout *event);
static struct uloop_timeout reconf_event = {.cb = reconf_timer};
static uint32_t serial = 0;
static uint8_t statemd5[16];
-
int dhcpv6_ia_init(void)
{
uloop_timeout_set(&reconf_event, 2000);
return 0;
}
-
-void free_dhcpv6_assignment(struct dhcpv6_assignment *c)
-{
- if (c->managed_sock.fd.registered) {
- ustream_free(&c->managed_sock.stream);
- close(c->managed_sock.fd.fd);
- }
-
- if (c->head.next)
- list_del(&c->head);
-
- free(c->managed);
- free(c->hostname);
- free(c);
-}
-
-
int setup_dhcpv6_ia_interface(struct interface *iface, bool enable)
{
if (!enable && iface->ia_assignments.next) {
syslog(LOG_ERR, "Calloc failed for border on interface %s", iface->ifname);
return -1;
}
-
+
border->length = 64;
list_add(&border->head, &iface->ia_assignments);
}
odhcpd_urandom(a->key, sizeof(a->key));
memcpy(a->clid_data, lease->duid, lease->duid_len);
memcpy(a->mac, lease->mac.ether_addr_octet, sizeof(a->mac));
+ /* Static assignment */
+ a->flags |= OAF_STATIC;
/* Infinite valid */
a->valid_until = 0;
return 0;
}
+static void free_dhcpv6_assignment(struct dhcpv6_assignment *c)
+{
+ if (c->managed_sock.fd.registered) {
+ ustream_free(&c->managed_sock.stream);
+ close(c->managed_sock.fd.fd);
+ }
+
+ if (c->head.next)
+ list_del(&c->head);
+
+ free(c->managed);
+ free(c->hostname);
+ free(c);
+}
static int send_reconf(struct interface *iface, struct dhcpv6_assignment *assign)
{
return odhcpd_send(iface->dhcpv6_event.uloop.fd, &assign->peer, &iov, 1, iface);
}
-
void dhcpv6_write_statefile(void)
{
md5_ctx_t md5;
if (iface->dhcpv6 == RELAYD_SERVER && iface->ia_assignments.next) {
struct dhcpv6_assignment *c;
list_for_each_entry(c, &iface->ia_assignments, head) {
- if (c->clid_len == 0 || c->managed_size < 0)
+ if (!(c->flags & OAF_BOUND) || c->managed_size < 0)
continue;
char ipbuf[INET6_ADDRSTRLEN];
fputs(ipbuf, fp);
char b[256];
- if (dn_expand(iface->search, iface->search + iface->search_len,
- iface->search, b, sizeof(b)) > 0)
- fprintf(fp, "\t%s.%s", c->hostname, b);
+ if (dn_expand(iface->search, iface->search + iface->search_len,
+ iface->search, b, sizeof(b)) > 0)
+ fprintf(fp, "\t%s.%s", c->hostname, b);
fprintf(fp, "\t%s\n", c->hostname);
md5_hash(ipbuf, strlen(ipbuf), &md5);
if (iface->dhcpv4 == RELAYD_SERVER && iface->dhcpv4_assignments.next) {
struct dhcpv4_assignment *c;
list_for_each_entry(c, &iface->dhcpv4_assignments, head) {
+ if (!(c->flags & OAF_BOUND))
+ continue;
+
char ipbuf[INET6_ADDRSTRLEN];
char leasebuf[512];
char duidbuf[16];
struct in_addr addr = {htonl(c->addr)};
inet_ntop(AF_INET, &addr, ipbuf, sizeof(ipbuf) - 1);
- if (c->hostname[0]) {
+ if (c->hostname) {
fputs(ipbuf, fp);
char b[256];
- if (dn_expand(iface->search, iface->search + iface->search_len,
- iface->search, b, sizeof(b)) > 0)
- fprintf(fp, "\t%s.%s", c->hostname, b);
+ if (dn_expand(iface->search, iface->search + iface->search_len,
+ iface->search, b, sizeof(b)) > 0)
+ fprintf(fp, "\t%s.%s", c->hostname, b);
fprintf(fp, "\t%s\n", c->hostname);
md5_hash(ipbuf, strlen(ipbuf), &md5);
}
}
-
// More data was received from TCP connection
static void managed_handle_pd_data(struct ustream *s, _unused int bytes_new)
{
c->reconf_cnt = 1;
}
-
-
static bool assign_pd(struct interface *iface, struct dhcpv6_assignment *assign)
{
struct dhcpv6_assignment *c;
return false;
}
-
static bool assign_na(struct interface *iface, struct dhcpv6_assignment *assign)
{
// Seed RNG with checksum of DUID
dhcpv6_write_statefile();
}
-
static void reconf_timer(struct uloop_timeout *event)
{
time_t now = odhcpd_time();
uloop_timeout_set(event, 2000);
}
-
static size_t append_reply(uint8_t *buf, size_t buflen, uint16_t status,
const struct dhcpv6_ia_hdr *ia, struct dhcpv6_assignment *a,
struct interface *iface, bool request)
}
}
- /* UINT32_MAX is considered as infinite leasetime */
- a->valid_until = (valid == UINT32_MAX) ? 0 : valid + now;
+ if (!INFINITE_VALID(a->valid_until))
+ /* UINT32_MAX is considered as infinite leasetime */
+ a->valid_until = (valid == UINT32_MAX) ? 0 : valid + now;
+
out.t1 = htonl((pref == UINT32_MAX) ? pref : pref * 5 / 10);
out.t2 = htonl((pref == UINT32_MAX) ? pref : pref * 8 / 10);
return datalen;
}
-
static void dhcpv6_log(uint8_t msgtype, struct interface *iface, time_t now,
const char *duidbuf, bool is_pd, struct dhcpv6_assignment *a, int code)
{
duidbuf, iface->ifname, status, leasebuf);
}
-
-
ssize_t dhcpv6_handle_ia(uint8_t *buf, size_t buflen, struct interface *iface,
const struct sockaddr_in6 *addr, const void *data, const uint8_t *end)
{
a->length = reqlen;
a->peer = *addr;
a->assigned = reqhint;
+ // Set valid time to current time indicating
+ // assignment is not having infinite lifetime
+ a->valid_until = now;
if (first)
memcpy(a->key, first->key, sizeof(a->key));
// Was only a solicitation: mark binding for removal
if (assigned && hdr->msg_type == DHCPV6_MSG_SOLICIT) {
- a->valid_until = now;
+ a->flags &= ~OAF_BOUND;
+
+ if (!(a->flags & OAF_STATIC))
+ a->valid_until = now;
} else if (assigned && hdr->msg_type == DHCPV6_MSG_REQUEST) {
if (hostname_len > 0) {
a->hostname = realloc(a->hostname, hostname_len + 1);
}
}
a->accept_reconf = accept_reconf;
+ a->flags |= OAF_BOUND;
apply_lease(iface, a, true);
} else if (!assigned && a && a->managed_size == 0) { // Cleanup failed assignment
free_dhcpv6_assignment(a);
} else if (hdr->msg_type == DHCPV6_MSG_RENEW ||
hdr->msg_type == DHCPV6_MSG_REBIND) {
ia_response_len = append_reply(buf, buflen, status, ia, a, iface, false);
- if (a)
+ if (a) {
+ a->flags |= OAF_BOUND;
apply_lease(iface, a, true);
+ }
} else if (hdr->msg_type == DHCPV6_MSG_RELEASE) {
- a->valid_until = now - 1;
+ if (!(a->flags & OAF_STATIC))
+ a->valid_until = now - 1;
+
+ a->flags &= ~OAF_BOUND;
apply_lease(iface, a, false);
} else if (hdr->msg_type == DHCPV6_MSG_DECLINE && a->length == 128) {
- a->clid_len = 0;
- a->valid_until = now + 3600; // Block address for 1h
+ a->flags &= ~OAF_BOUND;
+
+ if (!(a->flags & OAF_STATIC)) {
+ a->clid_len = 0;
+ a->valid_until = now + 3600; // Block address for 1h
+ }
}
} else if (hdr->msg_type == DHCPV6_MSG_CONFIRM && ia_addr_present) {
// Send NOTONLINK for CONFIRM with addr present so that clients restart connection
projects / project / odhcpd.git / blobdiff