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-rw-r--r--source4/nbt_server/wins/winsdb.c136
-rw-r--r--source4/nbt_server/wins/winsserver.c18
-rw-r--r--source4/nbt_server/wins/winswack.c5
3 files changed, 108 insertions, 51 deletions
diff --git a/source4/nbt_server/wins/winsdb.c b/source4/nbt_server/wins/winsdb.c
index 551bc85727..ff3c787eb0 100644
--- a/source4/nbt_server/wins/winsdb.c
+++ b/source4/nbt_server/wins/winsdb.c
@@ -83,7 +83,7 @@ static struct ldb_dn *winsdb_dn(TALLOC_CTX *mem_ctx, struct nbt_name *name)
{
struct ldb_dn *dn;
- dn = ldb_dn_string_compose(mem_ctx, NULL, "type=%02x", name->type);
+ dn = ldb_dn_string_compose(mem_ctx, NULL, "type=0x%02X", name->type);
if (dn && name->name && *name->name) {
dn = ldb_dn_string_compose(mem_ctx, dn, "name=%s", name->name);
}
@@ -93,15 +93,20 @@ static struct ldb_dn *winsdb_dn(TALLOC_CTX *mem_ctx, struct nbt_name *name)
return dn;
}
-struct nbt_name *winsdb_nbt_name(TALLOC_CTX *mem_ctx, struct ldb_dn *dn)
+static NTSTATUS winsdb_nbt_name(TALLOC_CTX *mem_ctx, struct ldb_dn *dn, struct nbt_name **_name)
{
+ NTSTATUS status;
struct nbt_name *name;
uint32_t cur = 0;
name = talloc(mem_ctx, struct nbt_name);
- if (!name) goto failed;
+ if (!name) {
+ status = NT_STATUS_NO_MEMORY;
+ goto failed;
+ }
if (dn->comp_num > 3) {
+ status = NT_STATUS_INTERNAL_DB_CORRUPTION;
goto failed;
}
@@ -117,26 +122,31 @@ struct nbt_name *winsdb_nbt_name(TALLOC_CTX *mem_ctx, struct ldb_dn *dn)
cur++;
} else {
name->name = talloc_strdup(name, "");
- if (!name->name) goto failed;
+ if (!name->name) {
+ status = NT_STATUS_NO_MEMORY;
+ goto failed;
+ }
}
if (dn->comp_num > cur && strcasecmp("type", dn->components[cur].name) == 0) {
- name->type = strtoul((char *)dn->components[cur].value.data, NULL, 16);
+ name->type = strtoul((char *)dn->components[cur].value.data, NULL, 0);
cur++;
} else {
+ status = NT_STATUS_INTERNAL_DB_CORRUPTION;
goto failed;
}
- return name;
+ *_name = name;
+ return NT_STATUS_OK;
failed:
talloc_free(name);
- return NULL;
+ return status;
}
/*
decode the winsdb_addr("address") attribute:
"172.31.1.1" or
- "172.31.1.1;winsOwner:172.31.9.202;expireTime:20050923032330.0Z"
+ "172.31.1.1;winsOwner:172.31.9.202;expireTime:20050923032330.0Z;"
are valid records
*/
static BOOL winsdb_remove_version(struct wins_server *winssrv, uint64_t version)
@@ -247,6 +257,7 @@ const char **winsdb_addr_string_list(TALLOC_CTX *mem_ctx, struct winsdb_addr **a
*/
static struct winsdb_addr *winsdb_addr_decode(struct winsdb_record *rec, TALLOC_CTX *mem_ctx, struct ldb_val *val)
{
+ NTSTATUS status;
struct winsdb_addr *addr;
char *address;
char *wins_owner;
@@ -254,7 +265,10 @@ static struct winsdb_addr *winsdb_addr_decode(struct winsdb_record *rec, TALLOC_
char *p;
addr = talloc(mem_ctx, struct winsdb_addr);
- if (!addr) return NULL;
+ if (!addr) {
+ status = NT_STATUS_NO_MEMORY;
+ goto failed;
+ }
address = (char *)val->data;
@@ -264,52 +278,60 @@ static struct winsdb_addr *winsdb_addr_decode(struct winsdb_record *rec, TALLOC_
addr->address = talloc_steal(addr, val->data);
addr->wins_owner = rec->wins_owner;
addr->expire_time = rec->expire_time;
- return addr;
+ *_addr = addr;
+ return NT_STATUS_OK;
}
*p = '\0';p++;
addr->address = talloc_strdup(addr, address);
if (!addr->address) {
- talloc_free(addr);
- return NULL;
+ status = NT_STATUS_NO_MEMORY;
+ goto failed;
}
if (strncmp("winsOwner:", p, 10) != 0) {
- /* invalid record */
- talloc_free(addr);
- return NULL;
+ status = NT_STATUS_INTERNAL_DB_CORRUPTION;
+ goto failed;
}
wins_owner = p + 10;
p = strchr(wins_owner, ';');
if (!p) {
- /* invalid record */
- talloc_free(addr);
- return NULL;
+ status = NT_STATUS_INTERNAL_DB_CORRUPTION;
+ goto failed;
}
*p = '\0';p++;
addr->wins_owner = talloc_strdup(addr, wins_owner);
if (!addr->wins_owner) {
- talloc_free(addr);
- return NULL;
+ status = NT_STATUS_NO_MEMORY;
+ goto failed;
}
if (strncmp("expireTime:", p, 11) != 0) {
- /* invalid record */
- talloc_free(addr);
- return NULL;
+ status = NT_STATUS_INTERNAL_DB_CORRUPTION;
+ goto failed;
}
expire_time = p + 11;
+ p = strchr(expire_time, ';');
+ if (!p) {
+ status = NT_STATUS_INTERNAL_DB_CORRUPTION;
+ goto failed;
+ }
+ *p = '\0';p++;
addr->expire_time = ldap_string_to_time(expire_time);
- return addr;
+ *_addr = addr;
+ return NT_STATUS_OK;
+failed:
+ talloc_free(addr);
+ return status;
}
/*
encode the winsdb_addr("address") attribute like this:
- "172.31.1.1;winsOwner:172.31.9.202;expireTime:20050923032330.0Z"
+ "172.31.1.1;winsOwner:172.31.9.202;expireTime:20050923032330.0Z;"
*/
static int ldb_msg_add_winsdb_addr(struct ldb_context *ldb, struct ldb_message *msg,
const char *attr_name, struct winsdb_addr *addr)
@@ -317,7 +339,7 @@ static int ldb_msg_add_winsdb_addr(struct ldb_context *ldb, struct ldb_message *
struct ldb_val val;
const char *str;
- str = talloc_asprintf(msg, "%s;winsOwner:%s;expireTime:%s",
+ str = talloc_asprintf(msg, "%s;winsOwner:%s;expireTime:%s;",
addr->address, addr->wins_owner,
ldap_timestring(msg, addr->expire_time));
if (!str) return -1;
@@ -435,25 +457,33 @@ const char **winsdb_addr_string_list(TALLOC_CTX *mem_ctx, struct winsdb_addr **a
/*
load a WINS entry from the database
*/
-struct winsdb_record *winsdb_load(struct wins_server *winssrv,
- struct nbt_name *name, TALLOC_CTX *mem_ctx)
+NTSTATUS winsdb_lookup(struct ldb_context *wins_db,
+ struct nbt_name *name,
+ TALLOC_CTX *mem_ctx,
+ struct winsdb_record **_rec)
{
+ NTSTATUS status;
struct ldb_message **res = NULL;
int ret;
struct winsdb_record *rec;
TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
/* find the record in the WINS database */
- ret = ldb_search(winssrv->wins_db, winsdb_dn(tmp_ctx, name), LDB_SCOPE_BASE,
+ ret = ldb_search(wins_db, winsdb_dn(tmp_ctx, name), LDB_SCOPE_BASE,
NULL, NULL, &res);
if (res != NULL) {
talloc_steal(tmp_ctx, res);
}
- if (ret != 1) goto failed;
+ if (ret == 0) {
+ status = NT_STATUS_OBJECT_NAME_NOT_FOUND;
+ goto failed;
+ } else if (ret != 1) {
+ status = NT_STATUS_INTERNAL_DB_CORRUPTION;
+ goto failed;
+ }
- rec = winsdb_record(res[0], tmp_ctx);
- if (rec == NULL) goto failed;
- rec->name = name;
+ status = winsdb_record(res[0], name, tmp_ctx, &rec);
+ if (!NT_STATUS_IS_OK(status)) goto failed;
/* see if it has already expired */
if (rec->state == WINS_REC_ACTIVE &&
@@ -465,21 +495,31 @@ struct winsdb_record *winsdb_load(struct wins_server *winssrv,
talloc_steal(mem_ctx, rec);
talloc_free(tmp_ctx);
- return rec;
+ *_rec = rec;
+ return NT_STATUS_OK;
failed:
talloc_free(tmp_ctx);
- return NULL;
+ return status;
}
-struct winsdb_record *winsdb_record(struct ldb_message *msg, TALLOC_CTX *mem_ctx)
+NTSTATUS winsdb_record(struct ldb_message *msg, struct nbt_name *name, TALLOC_CTX *mem_ctx, struct winsdb_record **_rec)
{
+ NTSTATUS status;
struct winsdb_record *rec;
struct ldb_message_element *el;
uint32_t i;
rec = talloc(mem_ctx, struct winsdb_record);
- if (rec == NULL) goto failed;
+ if (rec == NULL) {
+ status = NT_STATUS_NO_MEMORY;
+ goto failed;
+ }
+
+ if (!name) {
+ status = winsdb_nbt_name(rec, msg->dn, &name);
+ if (!NT_STATUS_IS_OK(status)) goto failed;
+ }
/* parse it into a more convenient winsdb_record structure */
rec->name = name;
@@ -494,21 +534,31 @@ struct winsdb_record *winsdb_record(struct ldb_message *msg, TALLOC_CTX *mem_ctx
if (!rec->wins_owner) rec->wins_owner = WINSDB_OWNER_LOCAL;
el = ldb_msg_find_element(msg, "address");
- if (el == NULL) goto failed;
+ if (el == NULL) {
+ status = NT_STATUS_INTERNAL_DB_CORRUPTION;
+ goto failed;
+ }
rec->addresses = talloc_array(rec, struct winsdb_addr *, el->num_values+1);
- if (rec->addresses == NULL) goto failed;
+ if (rec->addresses == NULL) {
+ status = NT_STATUS_NO_MEMORY;
+ goto failed;
+ }
for (i=0;i<el->num_values;i++) {
- rec->addresses[i] = winsdb_addr_decode(rec, rec->addresses, &el->values[i]);
- if (rec->addresses[i] == NULL) goto failed;
+ status = winsdb_addr_decode(rec, &el->values[i], rec->addresses, &rec->addresses[i]);
+ if (!NT_STATUS_IS_OK(status)) goto failed;
}
rec->addresses[i] = NULL;
- return rec;
+ *_rec = rec;
+ return NT_STATUS_OK;
failed:
+ if (NT_STATUS_EQUAL(NT_STATUS_INTERNAL_DB_CORRUPTION, status)) {
+ DEBUG(1,("winsdb_record: corrupted record: %s\n", ldb_dn_linearize(rec, msg->dn)));
+ }
talloc_free(rec);
- return NULL;
+ return status;
}
/*
diff --git a/source4/nbt_server/wins/winsserver.c b/source4/nbt_server/wins/winsserver.c
index 37b59cdc7f..d5043caa29 100644
--- a/source4/nbt_server/wins/winsserver.c
+++ b/source4/nbt_server/wins/winsserver.c
@@ -110,6 +110,7 @@ static void nbtd_winsserver_register(struct nbt_name_socket *nbtsock,
struct nbt_name_packet *packet,
const struct nbt_peer_socket *src)
{
+ NTSTATUS status;
struct nbtd_interface *iface = talloc_get_type(nbtsock->incoming.private,
struct nbtd_interface);
struct wins_server *winssrv = iface->nbtsrv->winssrv;
@@ -125,10 +126,13 @@ static void nbtd_winsserver_register(struct nbt_name_socket *nbtsock,
goto done;
}
- rec = winsdb_load(winssrv, name, packet);
- if (rec == NULL) {
+ status = winsdb_lookup(winssrv->wins_db, name, packet, &rec);
+ if (NT_STATUS_EQUAL(NT_STATUS_OBJECT_NAME_NOT_FOUND, status)) {
rcode = wins_register_new(nbtsock, packet, src);
goto done;
+ } else if (!NT_STATUS_IS_OK(status)) {
+ rcode = NBT_RCODE_SVR;
+ goto done;
} else if (rec->state != WINS_REC_ACTIVE) {
winsdb_delete(winssrv, rec);
rcode = wins_register_new(nbtsock, packet, src);
@@ -182,6 +186,7 @@ static void nbtd_winsserver_query(struct nbt_name_socket *nbtsock,
struct nbt_name_packet *packet,
const struct nbt_peer_socket *src)
{
+ NTSTATUS status;
struct nbtd_interface *iface = talloc_get_type(nbtsock->incoming.private,
struct nbtd_interface);
struct wins_server *winssrv = iface->nbtsrv->winssrv;
@@ -189,8 +194,8 @@ static void nbtd_winsserver_query(struct nbt_name_socket *nbtsock,
struct winsdb_record *rec;
const char **addresses;
- rec = winsdb_load(winssrv, name, packet);
- if (rec == NULL || rec->state != WINS_REC_ACTIVE) {
+ status = winsdb_lookup(winssrv->wins_db, name, packet, &rec);
+ if (!NT_STATUS_IS_OK(status) || rec->state != WINS_REC_ACTIVE) {
nbtd_negative_name_query_reply(nbtsock, packet, src);
return;
}
@@ -212,14 +217,15 @@ static void nbtd_winsserver_release(struct nbt_name_socket *nbtsock,
struct nbt_name_packet *packet,
const struct nbt_peer_socket *src)
{
+ NTSTATUS status;
struct nbtd_interface *iface = talloc_get_type(nbtsock->incoming.private,
struct nbtd_interface);
struct wins_server *winssrv = iface->nbtsrv->winssrv;
struct nbt_name *name = &packet->questions[0].name;
struct winsdb_record *rec;
- rec = winsdb_load(winssrv, name, packet);
- if (rec == NULL ||
+ status = winsdb_lookup(winssrv->wins_db, name, packet, &rec);
+ if (!NT_STATUS_IS_OK(status) ||
rec->state != WINS_REC_ACTIVE ||
IS_GROUP_NAME(name, rec->nb_flags)) {
goto done;
diff --git a/source4/nbt_server/wins/winswack.c b/source4/nbt_server/wins/winswack.c
index defa3ad09a..64336992f6 100644
--- a/source4/nbt_server/wins/winswack.c
+++ b/source4/nbt_server/wins/winswack.c
@@ -54,12 +54,13 @@ static void wins_wack_deny(struct wack_state *state)
*/
static void wins_wack_allow(struct wack_state *state)
{
+ NTSTATUS status;
uint32_t ttl;
time_t now = time(NULL);
struct winsdb_record *rec = state->rec, *rec2;
- rec2 = winsdb_load(state->winssrv, rec->name, state);
- if (rec2 == NULL || rec2->version != rec->version) {
+ status = winsdb_lookup(state->winssrv->wins_db, rec->name, state, &rec2);
+ if (!NT_STATUS_IS_OK(status) || rec2->version != rec->version) {
DEBUG(1,("WINS: record %s changed during WACK - failing registration\n",
nbt_name_string(state, rec->name)));
wins_wack_deny(state);
generated by cgit (git 2.34.1) at 2024-12-12 03:59:20 +0000