Adding upstream version 256.upstream/256

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 58 insertions, 190 deletions

diff --git a/src/libsystemd-network/sd-dhcp-client.c b/src/libsystemd-network/sd-dhcp-client.c
index 24bcd74..1eb8509 100644
--- a/src/libsystemd-network/sd-dhcp-client.c
+++ b/src/libsystemd-network/sd-dhcp-client.c
@@ -15,8 +15,8 @@
 
 #include "alloc-util.h"
 #include "device-util.h"
+#include "dhcp-client-id-internal.h"
 #include "dhcp-client-internal.h"
-#include "dhcp-identifier.h"
 #include "dhcp-lease-internal.h"
 #include "dhcp-network.h"
 #include "dhcp-option.h"
@@ -39,7 +39,6 @@
 #include "utf8.h"
 #include "web-util.h"
 
-#define MAX_CLIENT_ID_LEN (sizeof(uint32_t) + MAX_DUID_LEN)  /* Arbitrary limit */
 #define MAX_MAC_ADDR_LEN CONST_MAX(INFINIBAND_ALEN, ETH_ALEN)
 
 #define RESTART_AFTER_NAK_MIN_USEC (1 * USEC_PER_SEC)
@@ -48,32 +47,6 @@
 #define TRANSIENT_FAILURE_ATTEMPTS 3 /* Arbitrary limit: how many attempts are considered enough to report
                                       * transient failure. */
 
-typedef struct sd_dhcp_client_id {
-        uint8_t type;
-        union {
-                struct {
-                        /* 0: Generic (non-LL) (RFC 2132) */
-                        uint8_t data[MAX_CLIENT_ID_LEN];
-                } _packed_ gen;
-                struct {
-                        /* 1: Ethernet Link-Layer (RFC 2132) */
-                        uint8_t haddr[ETH_ALEN];
-                } _packed_ eth;
-                struct {
-                        /* 2 - 254: ARP/Link-Layer (RFC 2132) */
-                        uint8_t haddr[0];
-                } _packed_ ll;
-                struct {
-                        /* 255: Node-specific (RFC 4361) */
-                        be32_t iaid;
-                        struct duid duid;
-                } _packed_ ns;
-                struct {
-                        uint8_t data[MAX_CLIENT_ID_LEN];
-                } _packed_ raw;
-        };
-} _packed_ sd_dhcp_client_id;
-
 struct sd_dhcp_client {
         unsigned n_ref;
 
@@ -89,6 +62,7 @@ struct sd_dhcp_client {
 
         int fd;
         uint16_t port;
+        uint16_t server_port;
         union sockaddr_union link;
         sd_event_source *receive_message;
         bool request_broadcast;
@@ -100,7 +74,6 @@ struct sd_dhcp_client {
         struct hw_addr_data bcast_addr;
         uint16_t arp_type;
         sd_dhcp_client_id client_id;
-        size_t client_id_len;
         char *hostname;
         char *vendor_class_identifier;
         char *mudurl;
@@ -181,58 +154,6 @@ static int client_receive_message_udp(
 static void client_stop(sd_dhcp_client *client, int error);
 static int client_restart(sd_dhcp_client *client);
 
-int sd_dhcp_client_id_to_string(const void *data, size_t len, char **ret) {
-        const sd_dhcp_client_id *client_id = data;
-        _cleanup_free_ char *t = NULL;
-        int r = 0;
-
-        assert_return(data, -EINVAL);
-        assert_return(len >= 1, -EINVAL);
-        assert_return(ret, -EINVAL);
-
-        len -= 1;
-        if (len > MAX_CLIENT_ID_LEN)
-                return -EINVAL;
-
-        switch (client_id->type) {
-        case 0:
-                if (utf8_is_printable((char *) client_id->gen.data, len))
-                        r = asprintf(&t, "%.*s", (int) len, client_id->gen.data);
-                else
-                        r = asprintf(&t, "DATA");
-                break;
-        case 1:
-                if (len == sizeof_field(sd_dhcp_client_id, eth))
-                        r = asprintf(&t, "%02x:%02x:%02x:%02x:%02x:%02x",
-                                     client_id->eth.haddr[0],
-                                     client_id->eth.haddr[1],
-                                     client_id->eth.haddr[2],
-                                     client_id->eth.haddr[3],
-                                     client_id->eth.haddr[4],
-                                     client_id->eth.haddr[5]);
-                else
-                        r = asprintf(&t, "ETHER");
-                break;
-        case 2 ... 254:
-                r = asprintf(&t, "ARP/LL");
-                break;
-        case 255:
-                if (len < sizeof(uint32_t))
-                        r = asprintf(&t, "IAID/DUID");
-                else {
-                        uint32_t iaid = be32toh(client_id->ns.iaid);
-                        /* TODO: check and stringify DUID */
-                        r = asprintf(&t, "IAID:0x%x/DUID", iaid);
-                }
-                break;
-        }
-        if (r < 0)
-                return -ENOMEM;
-
-        *ret = TAKE_PTR(t);
-        return 0;
-}
-
 int dhcp_client_set_state_callback(
                 sd_dhcp_client *client,
                 sd_dhcp_client_callback_t cb,
@@ -363,34 +284,14 @@ int sd_dhcp_client_set_mac(
         return 0;
 }
 
-int sd_dhcp_client_get_client_id(
-                sd_dhcp_client *client,
-                uint8_t *ret_type,
-                const uint8_t **ret_data,
-                size_t *ret_data_len) {
-
+int sd_dhcp_client_get_client_id(sd_dhcp_client *client, const sd_dhcp_client_id **ret) {
         assert_return(client, -EINVAL);
+        assert_return(ret, -EINVAL);
 
-        if (client->client_id_len > 0) {
-                if (client->client_id_len <= offsetof(sd_dhcp_client_id, raw.data))
-                        return -EINVAL;
-
-                if (ret_type)
-                        *ret_type = client->client_id.type;
-                if (ret_data)
-                        *ret_data = client->client_id.raw.data;
-                if (ret_data_len)
-                        *ret_data_len = client->client_id_len - offsetof(sd_dhcp_client_id, raw.data);
-                return 1;
-        }
-
-        if (ret_type)
-                *ret_type = 0;
-        if (ret_data)
-                *ret_data = NULL;
-        if (ret_data_len)
-                *ret_data_len = 0;
+        if (!sd_dhcp_client_id_is_set(&client->client_id))
+                return -ENODATA;
 
+        *ret = &client->client_id;
         return 0;
 }
 
@@ -403,7 +304,7 @@ int sd_dhcp_client_set_client_id(
         assert_return(client, -EINVAL);
         assert_return(!sd_dhcp_client_is_running(client), -EBUSY);
         assert_return(data, -EINVAL);
-        assert_return(data_len > 0 && data_len <= MAX_CLIENT_ID_LEN, -EINVAL);
+        assert_return(client_id_data_size_is_valid(data_len), -EINVAL);
 
         /* For hardware types, log debug message about unexpected data length.
          *
@@ -416,42 +317,28 @@ int sd_dhcp_client_set_client_id(
                                 "Changing client ID to hardware type %u with unexpected address length %zu",
                                 type, data_len);
 
-        client->client_id.type = type;
-        memcpy(&client->client_id.raw.data, data, data_len);
-        client->client_id_len = data_len + sizeof (client->client_id.type);
-
-        return 0;
+        return sd_dhcp_client_id_set(&client->client_id, type, data, data_len);
 }
 
-/**
- * Sets IAID and DUID. If duid is non-null, the DUID is set to duid_type + duid
- * without further modification. Otherwise, if duid_type is supported, DUID
- * is set based on that type. Otherwise, an error is returned.
- */
-static int dhcp_client_set_iaid(
+static int dhcp_client_set_iaid_duid(
                 sd_dhcp_client *client,
                 bool iaid_set,
-                uint32_t iaid) {
+                uint32_t iaid,
+                sd_dhcp_duid *duid) {
 
         int r;
 
-        assert_return(client, -EINVAL);
-        assert_return(!sd_dhcp_client_is_running(client), -EBUSY);
-
-        zero(client->client_id);
-        client->client_id.type = 255;
-
-        if (iaid_set)
-                client->client_id.ns.iaid = htobe32(iaid);
-        else {
+        if (!iaid_set) {
                 r = dhcp_identifier_set_iaid(client->dev, &client->hw_addr,
                                              /* legacy_unstable_byteorder = */ true,
-                                             &client->client_id.ns.iaid);
+                                             &iaid);
                 if (r < 0)
-                        return log_dhcp_client_errno(client, r, "Failed to set IAID: %m");
+                        return r;
+
+                iaid = be32toh(iaid);
         }
 
-        return 0;
+        return sd_dhcp_client_id_set_iaid_duid(&client->client_id, iaid, duid);
 }
 
 int sd_dhcp_client_set_iaid_duid_llt(
@@ -460,23 +347,17 @@ int sd_dhcp_client_set_iaid_duid_llt(
                 uint32_t iaid,
                 usec_t llt_time) {
 
-        size_t len;
+        sd_dhcp_duid duid;
         int r;
 
         assert_return(client, -EINVAL);
         assert_return(!sd_dhcp_client_is_running(client), -EBUSY);
 
-        r = dhcp_client_set_iaid(client, iaid_set, iaid);
+        r = sd_dhcp_duid_set_llt(&duid, client->hw_addr.bytes, client->hw_addr.length, client->arp_type, llt_time);
         if (r < 0)
                 return r;
 
-        r = dhcp_identifier_set_duid_llt(&client->hw_addr, client->arp_type, llt_time, &client->client_id.ns.duid, &len);
-        if (r < 0)
-                return log_dhcp_client_errno(client, r, "Failed to set DUID-LLT: %m");
-
-        client->client_id_len = sizeof(client->client_id.type) + sizeof(client->client_id.ns.iaid) + len;
-
-        return 0;
+        return dhcp_client_set_iaid_duid(client, iaid_set, iaid, &duid);
 }
 
 int sd_dhcp_client_set_iaid_duid_ll(
@@ -484,23 +365,17 @@ int sd_dhcp_client_set_iaid_duid_ll(
                 bool iaid_set,
                 uint32_t iaid) {
 
-        size_t len;
+        sd_dhcp_duid duid;
         int r;
 
         assert_return(client, -EINVAL);
         assert_return(!sd_dhcp_client_is_running(client), -EBUSY);
 
-        r = dhcp_client_set_iaid(client, iaid_set, iaid);
+        r = sd_dhcp_duid_set_ll(&duid, client->hw_addr.bytes, client->hw_addr.length, client->arp_type);
         if (r < 0)
                 return r;
 
-        r = dhcp_identifier_set_duid_ll(&client->hw_addr, client->arp_type, &client->client_id.ns.duid, &len);
-        if (r < 0)
-                return log_dhcp_client_errno(client, r, "Failed to set DUID-LL: %m");
-
-        client->client_id_len = sizeof(client->client_id.type) + sizeof(client->client_id.ns.iaid) + len;
-
-        return 0;
+        return dhcp_client_set_iaid_duid(client, iaid_set, iaid, &duid);
 }
 
 int sd_dhcp_client_set_iaid_duid_en(
@@ -508,23 +383,17 @@ int sd_dhcp_client_set_iaid_duid_en(
                 bool iaid_set,
                 uint32_t iaid) {
 
-        size_t len;
+        sd_dhcp_duid duid;
         int r;
 
         assert_return(client, -EINVAL);
         assert_return(!sd_dhcp_client_is_running(client), -EBUSY);
 
-        r = dhcp_client_set_iaid(client, iaid_set, iaid);
+        r = sd_dhcp_duid_set_en(&duid);
         if (r < 0)
                 return r;
 
-        r = dhcp_identifier_set_duid_en(&client->client_id.ns.duid, &len);
-        if (r < 0)
-                return log_dhcp_client_errno(client, r, "Failed to set DUID-EN: %m");
-
-        client->client_id_len = sizeof(client->client_id.type) + sizeof(client->client_id.ns.iaid) + len;
-
-        return 0;
+        return dhcp_client_set_iaid_duid(client, iaid_set, iaid, &duid);
 }
 
 int sd_dhcp_client_set_iaid_duid_uuid(
@@ -532,23 +401,17 @@ int sd_dhcp_client_set_iaid_duid_uuid(
                 bool iaid_set,
                 uint32_t iaid) {
 
-        size_t len;
+        sd_dhcp_duid duid;
         int r;
 
         assert_return(client, -EINVAL);
         assert_return(!sd_dhcp_client_is_running(client), -EBUSY);
 
-        r = dhcp_client_set_iaid(client, iaid_set, iaid);
+        r = sd_dhcp_duid_set_uuid(&duid);
         if (r < 0)
                 return r;
 
-        r = dhcp_identifier_set_duid_uuid(&client->client_id.ns.duid, &len);
-        if (r < 0)
-                return log_dhcp_client_errno(client, r, "Failed to set DUID-UUID: %m");
-
-        client->client_id_len = sizeof(client->client_id.type) + sizeof(client->client_id.ns.iaid) + len;
-
-        return 0;
+        return dhcp_client_set_iaid_duid(client, iaid_set, iaid, &duid);
 }
 
 int sd_dhcp_client_set_iaid_duid_raw(
@@ -556,27 +419,21 @@ int sd_dhcp_client_set_iaid_duid_raw(
                 bool iaid_set,
                 uint32_t iaid,
                 uint16_t duid_type,
-                const uint8_t *duid,
-                size_t duid_len) {
+                const uint8_t *duid_data,
+                size_t duid_data_len) {
 
-        size_t len;
+        sd_dhcp_duid duid;
         int r;
 
         assert_return(client, -EINVAL);
         assert_return(!sd_dhcp_client_is_running(client), -EBUSY);
-        assert_return(duid || duid_len == 0, -EINVAL);
+        assert_return(duid_data || duid_data_len == 0, -EINVAL);
 
-        r = dhcp_client_set_iaid(client, iaid_set, iaid);
+        r = sd_dhcp_duid_set(&duid, duid_type, duid_data, duid_data_len);
         if (r < 0)
                 return r;
 
-        r = dhcp_identifier_set_duid_raw(duid_type, duid, duid_len, &client->client_id.ns.duid, &len);
-        if (r < 0)
-                return log_dhcp_client_errno(client, r, "Failed to set DUID: %m");
-
-        client->client_id_len = sizeof(client->client_id.type) + sizeof(client->client_id.ns.iaid) + len;
-
-        return 0;
+        return dhcp_client_set_iaid_duid(client, iaid_set, iaid, &duid);
 }
 
 int sd_dhcp_client_set_rapid_commit(sd_dhcp_client *client, bool rapid_commit) {
@@ -660,6 +517,18 @@ int sd_dhcp_client_set_client_port(
         return 0;
 }
 
+int sd_dhcp_client_set_port(
+                sd_dhcp_client *client,
+                uint16_t port) {
+
+        assert_return(client, -EINVAL);
+        assert_return(!sd_dhcp_client_is_running(client), -EBUSY);
+
+        client->server_port = port;
+
+        return 0;
+}
+
 int sd_dhcp_client_set_mtu(sd_dhcp_client *client, uint32_t mtu) {
         assert_return(client, -EINVAL);
         assert_return(mtu >= DHCP_MIN_PACKET_SIZE, -ERANGE);
@@ -925,8 +794,8 @@ static int client_message_init(
            Identifier option is not set */
         r = dhcp_option_append(&packet->dhcp, optlen, &optoffset, 0,
                                SD_DHCP_OPTION_CLIENT_IDENTIFIER,
-                               client->client_id_len,
-                               &client->client_id);
+                               client->client_id.size,
+                               client->client_id.raw);
         if (r < 0)
                 return r;
 
@@ -1035,7 +904,7 @@ static int dhcp_client_send_raw(
                 size_t len) {
 
         dhcp_packet_append_ip_headers(packet, INADDR_ANY, client->port,
-                                      INADDR_BROADCAST, DHCP_PORT_SERVER, len, client->ip_service_type);
+                                      INADDR_BROADCAST, client->server_port, len, client->ip_service_type);
 
         return dhcp_network_send_raw_socket(client->fd, &client->link,
                                             packet, len);
@@ -1257,7 +1126,7 @@ static int client_send_request(sd_dhcp_client *client) {
         if (client->state == DHCP_STATE_RENEWING)
                 r = dhcp_network_send_udp_socket(client->fd,
                                                  client->lease->server_address,
-                                                 DHCP_PORT_SERVER,
+                                                 client->server_port,
                                                  &request->dhcp,
                                                  sizeof(DHCPMessage) + optoffset);
         else
@@ -1599,10 +1468,8 @@ static int client_parse_message(
         if (r < 0)
                 return r;
 
-        if (client->client_id_len > 0) {
-                r = dhcp_lease_set_client_id(lease,
-                                             (uint8_t *) &client->client_id,
-                                             client->client_id_len);
+        if (sd_dhcp_client_id_is_set(&client->client_id)) {
+                r = dhcp_lease_set_client_id(lease, &client->client_id);
                 if (r < 0)
                         return r;
         }
@@ -2302,7 +2169,7 @@ int sd_dhcp_client_start(sd_dhcp_client *client) {
                 return r;
 
         /* If no client identifier exists, construct an RFC 4361-compliant one */
-        if (client->client_id_len == 0) {
+        if (!sd_dhcp_client_id_is_set(&client->client_id)) {
                 r = sd_dhcp_client_set_iaid_duid_en(client, /* iaid_set = */ false, /* iaid = */ 0);
                 if (r < 0)
                         return r;
@@ -2349,7 +2216,7 @@ int sd_dhcp_client_send_release(sd_dhcp_client *client) {
 
         r = dhcp_network_send_udp_socket(client->fd,
                                          client->lease->server_address,
-                                         DHCP_PORT_SERVER,
+                                         client->server_port,
                                          &release->dhcp,
                                          sizeof(DHCPMessage) + optoffset);
         if (r < 0)
@@ -2383,7 +2250,7 @@ int sd_dhcp_client_send_decline(sd_dhcp_client *client) {
 
         r = dhcp_network_send_udp_socket(client->fd,
                                          client->lease->server_address,
-                                         DHCP_PORT_SERVER,
+                                         client->server_port,
                                          &release->dhcp,
                                          sizeof(DHCPMessage) + optoffset);
         if (r < 0)
@@ -2528,6 +2395,7 @@ int sd_dhcp_client_new(sd_dhcp_client **ret, int anonymize) {
                 .fd = -EBADF,
                 .mtu = DHCP_MIN_PACKET_SIZE,
                 .port = DHCP_PORT_CLIENT,
+                .server_port = DHCP_PORT_SERVER,
                 .anonymize = !!anonymize,
                 .max_discover_attempts = UINT64_MAX,
                 .max_request_attempts = 5,