summaryrefslogtreecommitdiff
path: root/src/libsystemd-network/sd-dhcp-lease.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/libsystemd-network/sd-dhcp-lease.c')
-rw-r--r--src/libsystemd-network/sd-dhcp-lease.c146
1 files changed, 123 insertions, 23 deletions
diff --git a/src/libsystemd-network/sd-dhcp-lease.c b/src/libsystemd-network/sd-dhcp-lease.c
index 43f7566f65..eae186c9d3 100644
--- a/src/libsystemd-network/sd-dhcp-lease.c
+++ b/src/libsystemd-network/sd-dhcp-lease.c
@@ -203,6 +203,14 @@ sd_dhcp_lease *sd_dhcp_lease_ref(sd_dhcp_lease *lease) {
sd_dhcp_lease *sd_dhcp_lease_unref(sd_dhcp_lease *lease) {
if (lease && REFCNT_DEC(lease->n_ref) == 0) {
+ while (lease->private_options) {
+ struct sd_dhcp_raw_option *option = lease->private_options;
+
+ LIST_REMOVE(options, lease->private_options, option);
+
+ free(option->data);
+ free(option);
+ }
free(lease->hostname);
free(lease->domainname);
free(lease->dns);
@@ -606,11 +614,49 @@ int dhcp_lease_parse_options(uint8_t code, uint8_t len, const uint8_t *option,
}
break;
+
+ default:
+ if (code < DHCP_OPTION_PRIVATE_BASE || code > DHCP_OPTION_PRIVATE_LAST)
+ break;
+
+ r = dhcp_lease_insert_private_option(lease, code, option, len);
+ if (r < 0)
+ return r;
}
return 0;
}
+int dhcp_lease_insert_private_option(sd_dhcp_lease *lease, uint8_t tag,
+ const uint8_t *data, uint8_t len) {
+ struct sd_dhcp_raw_option *cur, *option;
+
+ LIST_FOREACH(options, cur, lease->private_options) {
+ if (tag < cur->tag)
+ break;
+ else if (tag == cur->tag) {
+ log_error("Ignoring duplicate option, tagged %d.", tag);
+ return 0;
+ }
+ }
+
+ option = new(struct sd_dhcp_raw_option, 1);
+ if (!option)
+ return -ENOMEM;
+
+ option->tag = tag;
+ option->length = len;
+ option->data = memdup(data, len);
+ if (!option->data) {
+ free(option);
+ return -ENOMEM;
+ }
+
+ LIST_INSERT_BEFORE(options, lease->private_options, cur, option);
+
+ return 0;
+}
+
int dhcp_lease_new(sd_dhcp_lease **ret) {
sd_dhcp_lease *lease;
@@ -620,6 +666,7 @@ int dhcp_lease_new(sd_dhcp_lease **ret) {
lease->router = INADDR_ANY;
lease->n_ref = REFCNT_INIT;
+ LIST_HEAD_INIT(lease->private_options);
*ret = lease;
return 0;
@@ -628,6 +675,7 @@ int dhcp_lease_new(sd_dhcp_lease **ret) {
int sd_dhcp_lease_save(sd_dhcp_lease *lease, const char *lease_file) {
_cleanup_free_ char *temp_path = NULL;
_cleanup_fclose_ FILE *f = NULL;
+ struct sd_dhcp_raw_option *option;
struct in_addr address;
const struct in_addr *addresses;
const uint8_t *client_id, *data;
@@ -642,13 +690,13 @@ int sd_dhcp_lease_save(sd_dhcp_lease *lease, const char *lease_file) {
r = fopen_temporary(lease_file, &f, &temp_path);
if (r < 0)
- goto finish;
+ goto fail;
fchmod(fileno(f), 0644);
r = sd_dhcp_lease_get_address(lease, &address);
if (r < 0)
- goto finish;
+ goto fail;
fprintf(f,
"# This is private data. Do not parse.\n"
@@ -656,7 +704,7 @@ int sd_dhcp_lease_save(sd_dhcp_lease *lease, const char *lease_file) {
r = sd_dhcp_lease_get_netmask(lease, &address);
if (r < 0)
- goto finish;
+ goto fail;
fprintf(f, "NETMASK=%s\n", inet_ntoa(address));
@@ -712,7 +760,7 @@ int sd_dhcp_lease_save(sd_dhcp_lease *lease, const char *lease_file) {
client_id_hex = hexmem(client_id, client_id_len);
if (!client_id_hex) {
r = -ENOMEM;
- goto finish;
+ goto fail;
}
fprintf(f, "CLIENTID=%s\n", client_id_hex);
}
@@ -724,26 +772,35 @@ int sd_dhcp_lease_save(sd_dhcp_lease *lease, const char *lease_file) {
option_hex = hexmem(data, data_len);
if (!option_hex) {
r = -ENOMEM;
- goto finish;
+ goto fail;
}
fprintf(f, "VENDOR_SPECIFIC=%s\n", option_hex);
}
- r = 0;
+ LIST_FOREACH(options, option, lease->private_options) {
+ char key[strlen("OPTION_000")+1];
+ snprintf(key, sizeof(key), "OPTION_%"PRIu8, option->tag);
+ r = serialize_dhcp_option(f, key, option->data, option->length);
+ if (r < 0)
+ goto fail;
+ }
- fflush(f);
+ r = fflush_and_check(f);
+ if (r < 0)
+ goto fail;
- if (ferror(f) || rename(temp_path, lease_file) < 0) {
+ if (rename(temp_path, lease_file) < 0) {
r = -errno;
- unlink(lease_file);
- unlink(temp_path);
+ goto fail;
}
-finish:
- if (r < 0)
- log_error_errno(r, "Failed to save lease data %s: %m", lease_file);
+ return 0;
+
+fail:
+ if (temp_path)
+ (void) unlink(temp_path);
- return r;
+ return log_error_errno(r, "Failed to save lease data %s: %m", lease_file);
}
int sd_dhcp_lease_load(sd_dhcp_lease **ret, const char *lease_file) {
@@ -752,9 +809,11 @@ int sd_dhcp_lease_load(sd_dhcp_lease **ret, const char *lease_file) {
*server_address = NULL, *next_server = NULL,
*dns = NULL, *ntp = NULL, *mtu = NULL,
*routes = NULL, *client_id_hex = NULL,
- *vendor_specific_hex = NULL;
+ *vendor_specific_hex = NULL,
+ *options[DHCP_OPTION_PRIVATE_LAST -
+ DHCP_OPTION_PRIVATE_BASE + 1] = { NULL };
struct in_addr addr;
- int r;
+ int r, i;
assert(lease_file);
assert(ret);
@@ -778,6 +837,37 @@ int sd_dhcp_lease_load(sd_dhcp_lease **ret, const char *lease_file) {
"ROUTES", &routes,
"CLIENTID", &client_id_hex,
"VENDOR_SPECIFIC", &vendor_specific_hex,
+ "OPTION_224", &options[0],
+ "OPTION_225", &options[1],
+ "OPTION_226", &options[2],
+ "OPTION_227", &options[3],
+ "OPTION_228", &options[4],
+ "OPTION_229", &options[5],
+ "OPTION_230", &options[6],
+ "OPTION_231", &options[7],
+ "OPTION_232", &options[8],
+ "OPTION_233", &options[9],
+ "OPTION_234", &options[10],
+ "OPTION_235", &options[11],
+ "OPTION_236", &options[12],
+ "OPTION_237", &options[13],
+ "OPTION_238", &options[14],
+ "OPTION_239", &options[15],
+ "OPTION_240", &options[16],
+ "OPTION_241", &options[17],
+ "OPTION_242", &options[18],
+ "OPTION_243", &options[19],
+ "OPTION_244", &options[20],
+ "OPTION_245", &options[21],
+ "OPTION_246", &options[22],
+ "OPTION_247", &options[23],
+ "OPTION_248", &options[24],
+ "OPTION_249", &options[25],
+ "OPTION_250", &options[26],
+ "OPTION_251", &options[27],
+ "OPTION_252", &options[28],
+ "OPTION_253", &options[29],
+ "OPTION_254", &options[30],
NULL);
if (r < 0) {
if (r == -ENOENT)
@@ -852,19 +942,29 @@ int sd_dhcp_lease_load(sd_dhcp_lease **ret, const char *lease_file) {
}
if (client_id_hex) {
- if (strlen(client_id_hex) % 2)
- return -EINVAL;
-
- r = unhexmem(client_id_hex, strlen(client_id_hex), (void**) &lease->client_id, &lease->client_id_len);
+ r = deserialize_dhcp_option(&lease->client_id, &lease->client_id_len, client_id_hex);
if (r < 0)
return r;
}
if (vendor_specific_hex) {
- if (strlen(vendor_specific_hex) % 2)
- return -EINVAL;
+ r = deserialize_dhcp_option(&lease->vendor_specific, &lease->vendor_specific_len, vendor_specific_hex);
+ if (r < 0)
+ return r;
+ }
+
+ for (i = 0; i <= DHCP_OPTION_PRIVATE_LAST - DHCP_OPTION_PRIVATE_BASE; i++) {
+ uint8_t *data;
+ size_t len;
+
+ if (!options[i])
+ continue;
+
+ r = deserialize_dhcp_option(&data, &len, options[i]);
+ if (r < 0)
+ return r;
- r = unhexmem(vendor_specific_hex, strlen(vendor_specific_hex), (void**) &lease->vendor_specific, &lease->vendor_specific_len);
+ r = dhcp_lease_insert_private_option(lease, DHCP_OPTION_PRIVATE_BASE + i, data, len);
if (r < 0)
return r;
}
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-08-12 14:22:36 +0000