-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
/***
This file is part of systemd.
#include <sys/ioctl.h>
#include <linux/if_infiniband.h>
-#include "udev.h"
-#include "udev-util.h"
-#include "util.h"
-#include "random-util.h"
-
-#include "network-internal.h"
#include "sd-dhcp6-client.h"
-#include "dhcp6-protocol.h"
+
+#include "alloc-util.h"
+#include "dhcp-identifier.h"
#include "dhcp6-internal.h"
#include "dhcp6-lease-internal.h"
-#include "dhcp-identifier.h"
+#include "dhcp6-protocol.h"
+#include "fd-util.h"
+#include "in-addr-util.h"
+#include "network-internal.h"
+#include "random-util.h"
+#include "socket-util.h"
+#include "string-table.h"
+#include "util.h"
#define MAX_MAC_ADDR_LEN INFINIBAND_ALEN
sd_event *event;
int event_priority;
int index;
+ struct in6_addr local_address;
uint8_t mac_addr[MAX_MAC_ADDR_LEN];
size_t mac_addr_len;
uint16_t arp_type;
uint8_t retransmit_count;
sd_event_source *timeout_resend;
sd_event_source *timeout_resend_expire;
- sd_dhcp6_client_cb_t cb;
+ sd_dhcp6_client_callback_t cb;
void *userdata;
struct duid duid;
size_t duid_len;
};
static const uint16_t default_req_opts[] = {
- DHCP6_OPTION_DNS_SERVERS,
- DHCP6_OPTION_DOMAIN_LIST,
- DHCP6_OPTION_NTP_SERVER,
- DHCP6_OPTION_SNTP_SERVERS,
+ SD_DHCP6_OPTION_DNS_SERVERS,
+ SD_DHCP6_OPTION_DOMAIN_LIST,
+ SD_DHCP6_OPTION_NTP_SERVER,
+ SD_DHCP6_OPTION_SNTP_SERVERS,
};
const char * dhcp6_message_type_table[_DHCP6_MESSAGE_MAX] = {
DEFINE_STRING_TABLE_LOOKUP(dhcp6_message_status, int);
-DEFINE_TRIVIAL_CLEANUP_FUNC(sd_dhcp6_client*, sd_dhcp6_client_unref);
-#define _cleanup_dhcp6_client_unref_ _cleanup_(sd_dhcp6_client_unrefp)
-
#define DHCP6_CLIENT_DONT_DESTROY(client) \
- _cleanup_dhcp6_client_unref_ _unused_ sd_dhcp6_client *_dont_destroy_##client = sd_dhcp6_client_ref(client)
+ _cleanup_(sd_dhcp6_client_unrefp) _unused_ sd_dhcp6_client *_dont_destroy_##client = sd_dhcp6_client_ref(client)
static int client_start(sd_dhcp6_client *client, enum DHCP6State state);
-int sd_dhcp6_client_set_callback(sd_dhcp6_client *client, sd_dhcp6_client_cb_t cb, void *userdata) {
+int sd_dhcp6_client_set_callback(sd_dhcp6_client *client, sd_dhcp6_client_callback_t cb, void *userdata) {
assert_return(client, -EINVAL);
client->cb = cb;
return 0;
}
+int sd_dhcp6_client_set_local_address(sd_dhcp6_client *client, const struct in6_addr *local_address) {
+ assert_return(client, -EINVAL);
+ assert_return(local_address, -EINVAL);
+ assert_return(in_addr_is_link_local(AF_INET6, (const union in_addr_union *) local_address) > 0, -EINVAL);
+
+ assert_return(IN_SET(client->state, DHCP6_STATE_STOPPED), -EBUSY);
+
+ client->local_address = *local_address;
+
+ return 0;
+}
+
int sd_dhcp6_client_set_mac(
sd_dhcp6_client *client,
const uint8_t *addr, size_t addr_len,
return dhcp_identifier_set_duid_en(&client->duid, &client->duid_len);
}
-int sd_dhcp6_client_set_duid(
- sd_dhcp6_client *client,
- uint16_t type,
- uint8_t *duid, size_t duid_len) {
+int sd_dhcp6_client_set_duid(sd_dhcp6_client *client, uint16_t duid_type,
+ uint8_t *duid, size_t duid_len) {
+ int r;
assert_return(client, -EINVAL);
- assert_return(duid, -EINVAL);
- assert_return(duid_len > 0 && duid_len <= MAX_DUID_LEN, -EINVAL);
-
assert_return(IN_SET(client->state, DHCP6_STATE_STOPPED), -EBUSY);
- switch (type) {
- case DHCP6_DUID_LLT:
- if (duid_len <= sizeof(client->duid.llt))
- return -EINVAL;
- break;
- case DHCP6_DUID_EN:
- if (duid_len != sizeof(client->duid.en))
- return -EINVAL;
- break;
- case DHCP6_DUID_LL:
- if (duid_len <= sizeof(client->duid.ll))
- return -EINVAL;
- break;
- case DHCP6_DUID_UUID:
- if (duid_len != sizeof(client->duid.uuid))
- return -EINVAL;
- break;
- default:
- /* accept unknown type in order to be forward compatible */
- break;
+ if (duid_len > 0) {
+ r = dhcp_validate_duid_len(duid_type, duid_len);
+ if (r < 0)
+ return r;
+ client->duid.type = htobe16(duid_type);
+ memcpy(&client->duid.raw.data, duid, duid_len);
+ client->duid_len = duid_len + sizeof(client->duid.type);
}
- client->duid.type = htobe16(type);
- memcpy(&client->duid.raw.data, duid, duid_len);
- client->duid_len = duid_len + sizeof(client->duid.type);
-
return 0;
}
-int sd_dhcp6_client_set_information_request(sd_dhcp6_client *client, bool enabled) {
+int sd_dhcp6_client_set_iaid(sd_dhcp6_client *client, uint32_t iaid) {
assert_return(client, -EINVAL);
+ assert_return(IN_SET(client->state, DHCP6_STATE_STOPPED), -EBUSY);
+
+ client->ia_na.id = htobe32(iaid);
+
+ return 0;
+}
+int sd_dhcp6_client_set_information_request(sd_dhcp6_client *client, int enabled) {
+ assert_return(client, -EINVAL);
assert_return(IN_SET(client->state, DHCP6_STATE_STOPPED), -EBUSY);
client->information_request = enabled;
return 0;
}
-int sd_dhcp6_client_get_information_request(sd_dhcp6_client *client, bool *enabled) {
+int sd_dhcp6_client_get_information_request(sd_dhcp6_client *client, int *enabled) {
assert_return(client, -EINVAL);
assert_return(enabled, -EINVAL);
assert_return(client->state == DHCP6_STATE_STOPPED, -EBUSY);
switch(option) {
- case DHCP6_OPTION_DNS_SERVERS:
- case DHCP6_OPTION_DOMAIN_LIST:
- case DHCP6_OPTION_SNTP_SERVERS:
- case DHCP6_OPTION_NTP_SERVER:
+ case SD_DHCP6_OPTION_DNS_SERVERS:
+ case SD_DHCP6_OPTION_DOMAIN_LIST:
+ case SD_DHCP6_OPTION_SNTP_SERVERS:
+ case SD_DHCP6_OPTION_NTP_SERVER:
break;
default:
int sd_dhcp6_client_get_lease(sd_dhcp6_client *client, sd_dhcp6_lease **ret) {
assert_return(client, -EINVAL);
- assert_return(ret, -EINVAL);
if (!client->lease)
return -ENOMSG;
- *ret = client->lease;
+ if (ret)
+ *ret = client->lease;
return 0;
}
message->type = DHCP6_SOLICIT;
r = dhcp6_option_append(&opt, &optlen,
- DHCP6_OPTION_RAPID_COMMIT, 0, NULL);
+ SD_DHCP6_OPTION_RAPID_COMMIT, 0, NULL);
if (r < 0)
return r;
else
message->type = DHCP6_RENEW;
- r = dhcp6_option_append(&opt, &optlen, DHCP6_OPTION_SERVERID,
+ r = dhcp6_option_append(&opt, &optlen, SD_DHCP6_OPTION_SERVERID,
client->lease->serverid_len,
client->lease->serverid);
if (r < 0)
return -EINVAL;
}
- r = dhcp6_option_append(&opt, &optlen, DHCP6_OPTION_ORO,
+ r = dhcp6_option_append(&opt, &optlen, SD_DHCP6_OPTION_ORO,
client->req_opts_len * sizeof(be16_t),
client->req_opts);
if (r < 0)
return r;
assert (client->duid_len);
- r = dhcp6_option_append(&opt, &optlen, DHCP6_OPTION_CLIENTID,
+ r = dhcp6_option_append(&opt, &optlen, SD_DHCP6_OPTION_CLIENTID,
client->duid_len, &client->duid);
if (r < 0)
return r;
else
elapsed_time = 0xffff;
- r = dhcp6_option_append(&opt, &optlen, DHCP6_OPTION_ELAPSED_TIME,
+ r = dhcp6_option_append(&opt, &optlen, SD_DHCP6_OPTION_ELAPSED_TIME,
sizeof(elapsed_time), &elapsed_time);
if (r < 0)
return r;
while ((r = dhcp6_option_parse(&option, &len, &optcode, &optlen,
&optval)) >= 0) {
switch (optcode) {
- case DHCP6_OPTION_CLIENTID:
+ case SD_DHCP6_OPTION_CLIENTID:
if (clientid) {
log_dhcp6_client(client, "%s contains multiple clientids",
dhcp6_message_type_to_string(message->type));
break;
- case DHCP6_OPTION_SERVERID:
+ case SD_DHCP6_OPTION_SERVERID:
r = dhcp6_lease_get_serverid(lease, &id, &id_len);
if (r >= 0 && id) {
log_dhcp6_client(client, "%s contains multiple serverids",
break;
- case DHCP6_OPTION_PREFERENCE:
+ case SD_DHCP6_OPTION_PREFERENCE:
if (optlen != 1)
return -EINVAL;
break;
- case DHCP6_OPTION_STATUS_CODE:
+ case SD_DHCP6_OPTION_STATUS_CODE:
if (optlen < 2)
return -EINVAL;
break;
- case DHCP6_OPTION_IA_NA:
+ case SD_DHCP6_OPTION_IA_NA:
if (client->state == DHCP6_STATE_INFORMATION_REQUEST) {
log_dhcp6_client(client, "Information request ignoring IA NA option");
break;
- case DHCP6_OPTION_RAPID_COMMIT:
+ case SD_DHCP6_OPTION_RAPID_COMMIT:
r = dhcp6_lease_set_rapid_commit(lease);
if (r < 0)
return r;
break;
- case DHCP6_OPTION_DNS_SERVERS:
+ case SD_DHCP6_OPTION_DNS_SERVERS:
r = dhcp6_lease_set_dns(lease, optval, optlen);
if (r < 0)
return r;
break;
- case DHCP6_OPTION_DOMAIN_LIST:
+ case SD_DHCP6_OPTION_DOMAIN_LIST:
r = dhcp6_lease_set_domains(lease, optval, optlen);
if (r < 0)
return r;
break;
- case DHCP6_OPTION_NTP_SERVER:
+ case SD_DHCP6_OPTION_NTP_SERVER:
r = dhcp6_lease_set_ntp(lease, optval, optlen);
if (r < 0)
return r;
break;
- case DHCP6_OPTION_SNTP_SERVERS:
+ case SD_DHCP6_OPTION_SNTP_SERVERS:
r = dhcp6_lease_set_sntp(lease, optval, optlen);
if (r < 0)
return r;
static int client_receive_reply(sd_dhcp6_client *client, DHCP6Message *reply, size_t len) {
int r;
- _cleanup_dhcp6_lease_free_ sd_dhcp6_lease *lease = NULL;
+ _cleanup_(sd_dhcp6_lease_unrefp) sd_dhcp6_lease *lease = NULL;
bool rapid_commit;
if (reply->type != DHCP6_REPLY)
static int client_receive_advertise(sd_dhcp6_client *client, DHCP6Message *advertise, size_t len) {
int r;
- _cleanup_dhcp6_lease_free_ sd_dhcp6_lease *lease = NULL;
+ _cleanup_(sd_dhcp6_lease_unrefp) sd_dhcp6_lease *lease = NULL;
uint8_t pref_advertise = 0, pref_lease = 0;
if (advertise->type != DHCP6_ADVERTISE)
static int client_receive_message(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
sd_dhcp6_client *client = userdata;
DHCP6_CLIENT_DONT_DESTROY(client);
- _cleanup_free_ DHCP6Message *message;
- int r, buflen, len;
+ _cleanup_free_ DHCP6Message *message = NULL;
+ ssize_t buflen, len;
+ int r = 0;
assert(s);
assert(client);
assert(client->event);
- r = ioctl(fd, FIONREAD, &buflen);
- if (r < 0 || buflen <= 0)
- buflen = DHCP6_MIN_OPTIONS_SIZE;
+ buflen = next_datagram_size_fd(fd);
+ if (buflen < 0)
+ return buflen;
- message = malloc0(buflen);
+ message = malloc(buflen);
if (!message)
return -ENOMEM;
len = read(fd, message, buflen);
- if ((size_t)len < sizeof(DHCP6Message)) {
- log_dhcp6_client(client, "could not receive message from UDP socket: %m");
+ if (len < 0) {
+ if (errno == EAGAIN || errno == EINTR)
+ return 0;
+
+ log_dhcp6_client(client, "Could not receive message from UDP socket: %m");
+
+ return -errno;
+ } else if ((size_t)len < sizeof(DHCP6Message))
return 0;
- }
switch(message->type) {
case DHCP6_SOLICIT:
}
int sd_dhcp6_client_stop(sd_dhcp6_client *client) {
+ assert_return(client, -EINVAL);
+
client_stop(client, SD_DHCP6_CLIENT_EVENT_STOP);
return 0;
}
+int sd_dhcp6_client_is_running(sd_dhcp6_client *client) {
+ assert_return(client, -EINVAL);
+
+ return client->state != DHCP6_STATE_STOPPED;
+}
+
int sd_dhcp6_client_start(sd_dhcp6_client *client) {
int r = 0;
enum DHCP6State state = DHCP6_STATE_SOLICITATION;
assert_return(client, -EINVAL);
assert_return(client->event, -EINVAL);
assert_return(client->index > 0, -EINVAL);
+ assert_return(in_addr_is_link_local(AF_INET6, (const union in_addr_union *) &client->local_address) > 0, -EINVAL);
if (!IN_SET(client->state, DHCP6_STATE_STOPPED))
- return -EALREADY;
+ return -EBUSY;
r = client_reset(client);
if (r < 0)
if (r < 0)
return r;
- r = dhcp6_network_bind_udp_socket(client->index, NULL);
+ r = dhcp6_network_bind_udp_socket(client->index, &client->local_address);
if (r < 0)
return r;
return r;
}
-int sd_dhcp6_client_attach_event(sd_dhcp6_client *client, sd_event *event, int priority) {
+int sd_dhcp6_client_attach_event(sd_dhcp6_client *client, sd_event *event, int64_t priority) {
int r;
assert_return(client, -EINVAL);
}
int sd_dhcp6_client_new(sd_dhcp6_client **ret) {
- _cleanup_dhcp6_client_unref_ sd_dhcp6_client *client = NULL;
+ _cleanup_(sd_dhcp6_client_unrefp) sd_dhcp6_client *client = NULL;
size_t t;
assert_return(ret, -EINVAL);
client->n_ref = 1;
- client->ia_na.type = DHCP6_OPTION_IA_NA;
+ client->ia_na.type = SD_DHCP6_OPTION_IA_NA;
client->index = -1;
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