#include "odhcpd.h"
#include "dhcpv6.h"
#include "dhcpv4.h"
-#include "md5.h"
+#include "libubox/md5.h"
#include <time.h>
#include <errno.h>
static void update(struct interface *iface);
static void reconf_timer(struct uloop_timeout *event);
static struct uloop_timeout reconf_event = {.cb = reconf_timer};
-static int socket_fd = -1;
static uint32_t serial = 0;
+static uint8_t statemd5[16];
-int dhcpv6_ia_init(int dhcpv6_socket)
+int dhcpv6_ia_init(void)
{
- socket_fd = dhcpv6_socket;
uloop_timeout_set(&reconf_event, 2000);
return 0;
}
if (list_empty(&iface->ia_assignments)) {
struct dhcpv6_assignment *border = calloc(1, sizeof(*border));
+ if (!border) {
+ syslog(LOG_ERR, "Calloc failed for border on interface %s", iface->ifname);
+ return -1;
+ }
+
border->length = 64;
list_add(&border->head, &iface->ia_assignments);
}
list_for_each_entry(lease, &leases, head) {
// Construct entry
struct dhcpv6_assignment *a = calloc(1, sizeof(*a) + lease->duid_len);
+ if (!a) {
+ syslog(LOG_ERR, "Calloc failed for static lease assignment on interface %s",
+ iface->ifname);
+ return -1;
+ }
+
a->clid_len = lease->duid_len;
a->length = 128;
- a->assigned = lease->hostid;
+ if (lease->hostid) {
+ a->assigned = lease->hostid;
+ } else {
+ uint32_t i4a = ntohl(lease->ipaddr.s_addr) & 0xff;
+ a->assigned = ((i4a / 100) << 8) | (((i4a % 100) / 10) << 4) | (i4a % 10);
+ }
odhcpd_urandom(a->key, sizeof(a->key));
memcpy(a->clid_data, lease->duid, a->clid_len);
memcpy(a->mac, lease->mac.ether_addr_octet, sizeof(a->mac));
list_for_each_entry(c, &iface->ia_assignments, head) {
if (c->length != 128 || c->assigned > a->assigned) {
list_add_tail(&a->head, &c->head);
+ break;
} else if (c->assigned == a->assigned) {
// Already an assignment with that number
break;
md5_hash(reconf_msg.auth.key, 16, &md5);
md5_end(reconf_msg.auth.key, &md5);
- return odhcpd_send(socket_fd, &assign->peer, &iov, 1, iface);
+ return odhcpd_send(iface->dhcpv6_event.uloop.fd, &assign->peer, &iov, 1, iface);
}
void dhcpv6_write_statefile(void)
{
+ md5_ctx_t md5;
+ md5_begin(&md5);
+
if (config.dhcp_statefile) {
time_t now = odhcpd_time(), wall_time = time(NULL);
int fd = open(config.dhcp_statefile, O_CREAT | O_WRONLY | O_CLOEXEC, 0644);
if (iface->dhcpv6 != RELAYD_SERVER && iface->dhcpv4 != RELAYD_SERVER)
continue;
- if (iface->dhcpv6 == RELAYD_SERVER) {
+ 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)
struct in6_addr addr;
for (size_t i = 0; i < iface->ia_addr_len; ++i) {
- if (iface->ia_addr[i].prefix > 64)
+ if (iface->ia_addr[i].prefix > 96)
continue;
addr = iface->ia_addr[i].addr;
addr.s6_addr32[1] |= htonl(c->assigned);
inet_ntop(AF_INET6, &addr, ipbuf, sizeof(ipbuf) - 1);
- if (c->length == 128 && c->hostname && i == 0)
- fprintf(fp, "%s\t%s\n", ipbuf, c->hostname);
+ if (c->length == 128 && c->hostname && i == 0) {
+ 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);
+
+ fprintf(fp, "\t%s\n", c->hostname);
+ md5_hash(ipbuf, strlen(ipbuf), &md5);
+ md5_hash(c->hostname, strlen(c->hostname), &md5);
+ }
l += snprintf(leasebuf + l, sizeof(leasebuf) - l, "%s/%hhu ", ipbuf, c->length);
}
}
}
- if (iface->dhcpv4 == RELAYD_SERVER) {
+ if (iface->dhcpv4 == RELAYD_SERVER && iface->dhcpv4_assignments.next) {
struct dhcpv4_assignment *c;
list_for_each_entry(c, &iface->dhcpv4_assignments, head) {
char ipbuf[INET6_ADDRSTRLEN];
struct in_addr addr = {htonl(c->addr)};
inet_ntop(AF_INET, &addr, ipbuf, sizeof(ipbuf) - 1);
- if (c->hostname[0])
- fprintf(fp, "%s\t%s\n", ipbuf, c->hostname);
+ if (c->hostname[0]) {
+ 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);
+
+ fprintf(fp, "\t%s\n", c->hostname);
+ md5_hash(ipbuf, strlen(ipbuf), &md5);
+ md5_hash(c->hostname, strlen(c->hostname), &md5);
+ }
l += snprintf(leasebuf + l, sizeof(leasebuf) - l, "%s/32 ", ipbuf);
leasebuf[l - 1] = '\n';
fclose(fp);
}
- if (config.dhcp_cb) {
+ uint8_t newmd5[16];
+ md5_end(newmd5, &md5);
+
+ if (config.dhcp_cb && memcmp(newmd5, statemd5, sizeof(newmd5))) {
+ memcpy(statemd5, newmd5, sizeof(statemd5));
char *argv[2] = {config.dhcp_cb, NULL};
if (!vfork()) {
execv(argv[0], argv);
if (addr[i].prefix > minprefix)
minprefix = addr[i].prefix;
- addr[i].addr.s6_addr32[2] = 0;
addr[i].addr.s6_addr32[3] = 0;
if (addr[i].preferred < UINT32_MAX - now)
if (a) {
uint32_t pref = 3600;
uint32_t valid = 3600;
- bool have_non_ula = false;
- for (size_t i = 0; i < iface->ia_addr_len; ++i)
- if ((iface->ia_addr[i].addr.s6_addr[0] & 0xfe) != 0xfc)
- have_non_ula = true;
for (size_t i = 0; i < iface->ia_addr_len; ++i) {
bool match = true;
uint32_t prefix_pref = iface->ia_addr[i].preferred - now;
uint32_t prefix_valid = iface->ia_addr[i].valid - now;
- if (iface->ia_addr[i].prefix > 64 ||
+ if (iface->ia_addr[i].prefix > 96 ||
iface->ia_addr[i].preferred <= (uint32_t)now)
continue;
- // ULA-deprecation compatibility workaround
- if ((iface->ia_addr[i].addr.s6_addr[0] & 0xfe) == 0xfc &&
- a->length == 128 && have_non_ula &&
- iface->deprecate_ula_if_public_avail)
- continue;
-
if (prefix_pref > 86400)
prefix_pref = 86400;
bool found = false;
if (a) {
for (size_t i = 0; i < iface->ia_addr_len; ++i) {
- if (iface->ia_addr[i].prefix > 64 ||
+ if (iface->ia_addr[i].prefix > 96 ||
iface->ia_addr[i].preferred <= (uint32_t)now)
continue;
if (ia->type == htons(DHCPV6_OPT_IA_PD)) {
addr.s6_addr32[1] |= htonl(a->assigned);
- if (IN6_ARE_ADDR_EQUAL(&p->addr, &addr) &&
+ if (!memcmp(&p->addr, &addr, sizeof(addr)) &&
p->prefix == a->length)
found = true;
} else {
addr.s6_addr32[3] = htonl(a->assigned);
- if (IN6_ARE_ADDR_EQUAL(&n->addr, &addr))
+ if (!memcmp(&n->addr, &addr, sizeof(addr)))
found = true;
}
}
a->all_class = class_oro;
a->classes_cnt = classes_cnt;
a->classes = realloc(a->classes, classes_cnt * sizeof(uint16_t));
- memcpy(a->classes, classes, classes_cnt * sizeof(uint16_t));
+ if (a->classes)
+ memcpy(a->classes, classes, classes_cnt * sizeof(uint16_t));
break;
}
}
if (!a && !iface->no_dynamic_dhcp) { // Create new binding
a = calloc(1, sizeof(*a) + clid_len);
- a->clid_len = clid_len;
- a->iaid = ia->iaid;
- a->length = reqlen;
- a->peer = *addr;
- a->assigned = reqhint;
- a->all_class = class_oro;
- a->classes_cnt = classes_cnt;
- if (classes_cnt) {
- a->classes = malloc(classes_cnt * sizeof(uint16_t));
- memcpy(a->classes, classes, classes_cnt * sizeof(uint16_t));
- }
+ if (a) {
+ a->clid_len = clid_len;
+ a->iaid = ia->iaid;
+ a->length = reqlen;
+ a->peer = *addr;
+ a->assigned = reqhint;
+ a->all_class = class_oro;
+ a->classes_cnt = classes_cnt;
+ if (classes_cnt) {
+ a->classes = malloc(classes_cnt * sizeof(uint16_t));
+ if (a->classes)
+ memcpy(a->classes, classes, classes_cnt * sizeof(uint16_t));
+ }
- if (first)
- memcpy(a->key, first->key, sizeof(a->key));
- else
- odhcpd_urandom(a->key, sizeof(a->key));
- memcpy(a->clid_data, clid_data, clid_len);
+ if (first)
+ memcpy(a->key, first->key, sizeof(a->key));
+ else
+ odhcpd_urandom(a->key, sizeof(a->key));
+ memcpy(a->clid_data, clid_data, clid_len);
- if (is_pd)
- while (!(assigned = assign_pd(iface, a)) && ++a->length <= 64);
- else
- assigned = assign_na(iface, a);
+ if (is_pd)
+ while (!(assigned = assign_pd(iface, a)) && ++a->length <= 64);
+ else
+ assigned = assign_na(iface, a);
+ }
}
if (!assigned || iface->ia_addr_len == 0) { // Set error status
} else if (assigned && hdr->msg_type == DHCPV6_MSG_REQUEST) {
if (hostname_len > 0) {
a->hostname = realloc(a->hostname, hostname_len + 1);
- memcpy(a->hostname, hostname, hostname_len);
- a->hostname[hostname_len] = 0;
+ if (a->hostname) {
+ memcpy(a->hostname, hostname, hostname_len);
+ a->hostname[hostname_len] = 0;
+ }
}
a->accept_reconf = accept_reconf;
apply_lease(iface, a, true);
projects / project / odhcpd.git / blobdiff