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sd-dhcp-client: two tiny cleanups (#42129)

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This commit is contained in:
Yu Watanabe
2026-05-17 04:16:32 +09:00
committed by GitHub
parent 5768f1dd6f ff32569f2a
commit cec4d5e673
10 changed files with 50 additions and 73 deletions
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src/libsystemd-network/dhcp-client-internal.h
+1 -2
View File
@@ -78,9 +78,8 @@ struct sd_dhcp_client {
void *state_userdata;
sd_dhcp_lease *lease;
usec_t start_delay;
int ip_service_type;
uint8_t ip_service_type;
int socket_priority;
bool socket_priority_set;
bool ipv6_acquired;
bool bootp;
bool send_release;
src/libsystemd-network/dhcp-client-send.c
+1 -1
View File
@@ -93,7 +93,7 @@ static int client_send_raw(
&client->bcast_addr,
client->arp_type,
client->port,
client->socket_priority_set,
/* so_priority_set= */ true,
client->socket_priority);
if (fd < 0)
return fd;
src/libsystemd-network/fuzz-dhcp-client.c
+1 -1
View File
@@ -54,7 +54,7 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
ASSERT_NOT_NULL(e);
_cleanup_(sd_dhcp_client_unrefp) sd_dhcp_client *client = NULL;
ASSERT_OK(sd_dhcp_client_new(&client, /* anonymize= */ false));
ASSERT_OK(sd_dhcp_client_new(&client));
ASSERT_NOT_NULL(client);
ASSERT_OK(sd_dhcp_client_attach_event(client, e, /* priority= */ 0));
src/libsystemd-network/sd-dhcp-client.c
+15 -43
View File
@@ -22,6 +22,7 @@
#include "network-common.h"
#include "random-util.h"
#include "set.h"
#include "socket-util.h"
#include "string-table.h"
#include "string-util.h"
#include "time-util.h"
@@ -45,32 +46,6 @@ static const uint8_t default_req_opts[] = {
SD_DHCP_OPTION_DOMAIN_NAME_SERVER,
};
/* RFC7844 section 3:
MAY contain the Parameter Request List option.
RFC7844 section 3.6:
The client intending to protect its privacy SHOULD only request a
minimal number of options in the PRL and SHOULD also randomly shuffle
the ordering of option codes in the PRL. If this random ordering
cannot be implemented, the client MAY order the option codes in the
PRL by option code number (lowest to highest).
*/
/* NOTE: using PRL options that Windows 10 RFC7844 implementation uses */
static const uint8_t default_req_opts_anonymize[] = {
SD_DHCP_OPTION_SUBNET_MASK, /* 1 */
SD_DHCP_OPTION_ROUTER, /* 3 */
SD_DHCP_OPTION_DOMAIN_NAME_SERVER, /* 6 */
SD_DHCP_OPTION_DOMAIN_NAME, /* 15 */
SD_DHCP_OPTION_ROUTER_DISCOVERY, /* 31 */
SD_DHCP_OPTION_STATIC_ROUTE, /* 33 */
SD_DHCP_OPTION_VENDOR_SPECIFIC_INFORMATION, /* 43 */
SD_DHCP_OPTION_NETBIOS_NAME_SERVER, /* 44 */
SD_DHCP_OPTION_NETBIOS_NODE_TYPE, /* 46 */
SD_DHCP_OPTION_NETBIOS_SCOPE, /* 47 */
SD_DHCP_OPTION_CLASSLESS_STATIC_ROUTE, /* 121 */
SD_DHCP_OPTION_PRIVATE_CLASSLESS_STATIC_ROUTE, /* 249 */
SD_DHCP_OPTION_PRIVATE_PROXY_AUTODISCOVERY, /* 252 */
};
static void client_stop(sd_dhcp_client *client, int error);
static int client_restart(sd_dhcp_client *client);
@@ -100,6 +75,14 @@ int sd_dhcp_client_set_callback(
return 0;
}
int sd_dhcp_client_set_anonymize(sd_dhcp_client *client, int b) {
assert_return(client, -EINVAL);
assert_return(!sd_dhcp_client_is_running(client), -EBUSY);
client->anonymize = !!b;
return 0;
}
int sd_dhcp_client_set_request_broadcast(sd_dhcp_client *client, int broadcast) {
assert_return(client, -EINVAL);
assert_return(!sd_dhcp_client_is_running(client), -EBUSY);
@@ -533,7 +516,7 @@ int sd_dhcp_client_get_lease(sd_dhcp_client *client, sd_dhcp_lease **ret) {
return 0;
}
int sd_dhcp_client_set_service_type(sd_dhcp_client *client, int type) {
int sd_dhcp_client_set_ip_service_type(sd_dhcp_client *client, uint8_t type) {
assert_return(client, -EINVAL);
assert_return(!sd_dhcp_client_is_running(client), -EBUSY);
@@ -546,7 +529,6 @@ int sd_dhcp_client_set_socket_priority(sd_dhcp_client *client, int socket_priori
assert_return(client, -EINVAL);
assert_return(!sd_dhcp_client_is_running(client), -EBUSY);
client->socket_priority_set = true;
client->socket_priority = socket_priority;
return 0;
@@ -1427,9 +1409,7 @@ static sd_dhcp_client* dhcp_client_free(sd_dhcp_client *client) {
DEFINE_TRIVIAL_REF_UNREF_FUNC(sd_dhcp_client, sd_dhcp_client, dhcp_client_free);
int sd_dhcp_client_new(sd_dhcp_client **ret, int anonymize) {
const uint8_t *opts;
size_t n_opts;
int sd_dhcp_client_new(sd_dhcp_client **ret) {
int r;
assert_return(ret, -EINVAL);
@@ -1444,21 +1424,13 @@ int sd_dhcp_client_new(sd_dhcp_client **ret, int anonymize) {
.ifindex = -1,
.port = DHCP_PORT_CLIENT,
.server_port = DHCP_PORT_SERVER,
.anonymize = !!anonymize,
.max_discover_attempts = UINT64_MAX,
.ip_service_type = -1,
.ip_service_type = IPTOS_CLASS_CS6, /* Defaults to CS6 (Internetwork Control). */
.socket_priority = tos_to_priority(IPTOS_CLASS_CS6),
};
/* NOTE: this could be moved to a function. */
if (anonymize) {
n_opts = ELEMENTSOF(default_req_opts_anonymize);
opts = default_req_opts_anonymize;
} else {
n_opts = ELEMENTSOF(default_req_opts);
opts = default_req_opts;
}
for (size_t i = 0; i < n_opts; i++) {
r = sd_dhcp_client_set_request_option(client, opts[i]);
FOREACH_ELEMENT(opt, default_req_opts) {
r = sd_dhcp_client_set_request_option(client, *opt);
if (r < 0)
return r;
}
src/libsystemd-network/test-dhcp-client.c
+9 -9
View File
@@ -48,7 +48,7 @@ static be32_t xid;
TEST(dhcp_client_setters) {
/* Initialize client without Anonymize settings. */
_cleanup_(sd_dhcp_client_unrefp) sd_dhcp_client *client = NULL;
ASSERT_OK(sd_dhcp_client_new(&client, /* anonymize= */ false));
ASSERT_OK(sd_dhcp_client_new(&client));
ASSERT_NOT_NULL(client);
ASSERT_RETURN_EXPECTED_SE(sd_dhcp_client_set_request_option(NULL, 0) == -EINVAL);
@@ -91,15 +91,15 @@ TEST(dhcp_client_setters) {
ASSERT_OK_ZERO(sd_dhcp_client_set_request_option(client, 17));
}
TEST(dhcp_client_anonymize) {
TEST(dhcp_client_set_anonymize) {
/* Initialize client with Anonymize settings. */
_cleanup_(sd_dhcp_client_unrefp) sd_dhcp_client *client = NULL;
ASSERT_OK(sd_dhcp_client_new(&client, /* anonymize= */ true));
ASSERT_OK(sd_dhcp_client_new(&client));
ASSERT_OK(sd_dhcp_client_set_anonymize(client, true));
ASSERT_NOT_NULL(client);
ASSERT_OK_ZERO(sd_dhcp_client_set_request_option(client, SD_DHCP_OPTION_NETBIOS_NAME_SERVER));
/* This PRL option is not set when using Anonymize */
ASSERT_OK_POSITIVE(sd_dhcp_client_set_request_option(client, SD_DHCP_OPTION_HOST_NAME));
ASSERT_OK_POSITIVE(sd_dhcp_client_set_request_option(client, SD_DHCP_OPTION_NETBIOS_NAME_SERVER));
ASSERT_OK_ZERO(sd_dhcp_client_set_request_option(client, SD_DHCP_OPTION_HOST_NAME));
ASSERT_ERROR(sd_dhcp_client_set_request_option(client, SD_DHCP_OPTION_PARAMETER_REQUEST_LIST), EINVAL);
/* RFC7844: option 101 (SD_DHCP_OPTION_NEW_TZDB_TIMEZONE) is not set in the
@@ -211,7 +211,7 @@ TEST(discover_message) {
ASSERT_NOT_NULL(e);
_cleanup_(sd_dhcp_client_unrefp) sd_dhcp_client *client = NULL;
ASSERT_OK(sd_dhcp_client_new(&client, /* anonymize= */ false));
ASSERT_OK(sd_dhcp_client_new(&client));
ASSERT_NOT_NULL(client);
ASSERT_OK(sd_dhcp_client_attach_event(client, e, /* priority= */ 0));
@@ -400,7 +400,7 @@ TEST(addr_acq) {
ASSERT_NOT_NULL(e);
_cleanup_(sd_dhcp_client_unrefp) sd_dhcp_client *client = NULL;
ASSERT_OK(sd_dhcp_client_new(&client, /* anonymize= */ false));
ASSERT_OK(sd_dhcp_client_new(&client));
ASSERT_NOT_NULL(client);
ASSERT_OK(sd_dhcp_client_attach_event(client, e, /* priority= */ 0));
@@ -575,7 +575,7 @@ static void test_bootp_one(void) {
ASSERT_NOT_NULL(e);
_cleanup_(sd_dhcp_client_unrefp) sd_dhcp_client *client = NULL;
ASSERT_OK(sd_dhcp_client_new(&client, /* anonymize= */ false));
ASSERT_OK(sd_dhcp_client_new(&client));
ASSERT_NOT_NULL(client);
ASSERT_OK(sd_dhcp_client_attach_event(client, e, /* priority= */ 0));