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-rw-r--r--source3/include/packet.h6
-rw-r--r--source3/lib/ctdbd_conn.c49
-rw-r--r--source3/lib/packet.c32
3 files changed, 50 insertions, 37 deletions
diff --git a/source3/include/packet.h b/source3/include/packet.h
index 05974da8fc..03331da750 100644
--- a/source3/include/packet.h
+++ b/source3/include/packet.h
@@ -44,12 +44,14 @@ NTSTATUS packet_fd_read_sync(struct packet_context *ctx);
* Handle an incoming packet:
* Return False if none is available
* Otherwise return True and store the callback result in *status
+ * Callback must either talloc_move or talloc_free buf
*/
bool packet_handler(struct packet_context *ctx,
- bool (*full_req)(const DATA_BLOB *data,
+ bool (*full_req)(const uint8_t *buf,
+ size_t available,
size_t *length,
void *private_data),
- NTSTATUS (*callback)(const DATA_BLOB *data,
+ NTSTATUS (*callback)(uint8_t *buf, size_t length,
void *private_data),
void *private_data,
NTSTATUS *status);
diff --git a/source3/lib/ctdbd_conn.c b/source3/lib/ctdbd_conn.c
index 8d97606b85..75a513312e 100644
--- a/source3/lib/ctdbd_conn.c
+++ b/source3/lib/ctdbd_conn.c
@@ -155,17 +155,17 @@ static NTSTATUS ctdbd_connect(TALLOC_CTX *mem_ctx,
* Do we have a complete ctdb packet in the queue?
*/
-static bool ctdb_req_complete(const DATA_BLOB *data,
+static bool ctdb_req_complete(const uint8_t *buf, size_t available,
size_t *length,
void *private_data)
{
uint32 msglen;
- if (data->length < sizeof(msglen)) {
+ if (available < sizeof(msglen)) {
return False;
}
- msglen = *((uint32 *)data->data);
+ msglen = *((uint32 *)buf);
DEBUG(10, ("msglen = %d\n", msglen));
@@ -176,12 +176,12 @@ static bool ctdb_req_complete(const DATA_BLOB *data,
cluster_fatal("ctdbd protocol error\n");
}
- if (data->length >= msglen) {
- *length = msglen;
- return True;
+ if (available < msglen) {
+ return false;
}
- return False;
+ *length = msglen;
+ return true;
}
/*
@@ -220,16 +220,13 @@ struct req_pull_state {
* Pull a ctdb request out of the incoming packet queue
*/
-static NTSTATUS ctdb_req_pull(const DATA_BLOB *data,
+static NTSTATUS ctdb_req_pull(uint8_t *buf, size_t length,
void *private_data)
{
struct req_pull_state *state = (struct req_pull_state *)private_data;
- state->req = data_blob_talloc(state->mem_ctx, data->data,
- data->length);
- if (state->req.data == NULL) {
- return NT_STATUS_NO_MEMORY;
- }
+ state->req.data = talloc_move(state->mem_ctx, &buf);
+ state->req.length = length;
return NT_STATUS_OK;
}
@@ -497,7 +494,7 @@ NTSTATUS ctdbd_messaging_connection(TALLOC_CTX *mem_ctx,
/*
* Packet handler to receive and handle a ctdb message
*/
-static NTSTATUS ctdb_handle_message(const DATA_BLOB *data,
+static NTSTATUS ctdb_handle_message(uint8_t *buf, size_t length,
void *private_data)
{
struct ctdbd_connection *conn = talloc_get_type_abort(
@@ -505,11 +502,12 @@ static NTSTATUS ctdb_handle_message(const DATA_BLOB *data,
struct ctdb_req_message *msg;
struct messaging_rec *msg_rec;
- msg = (struct ctdb_req_message *)data->data;
+ msg = (struct ctdb_req_message *)buf;
if (msg->hdr.operation != CTDB_REQ_MESSAGE) {
DEBUG(0, ("Received async msg of type %u, discarding\n",
msg->hdr.operation));
+ TALLOC_FREE(buf);
return NT_STATUS_INVALID_PARAMETER;
}
@@ -519,6 +517,7 @@ static NTSTATUS ctdb_handle_message(const DATA_BLOB *data,
DEBUG(10, ("received CTDB_SRVID_RELEASE_IP\n"));
conn->release_ip_handler((const char *)msg->data,
conn->release_ip_priv);
+ TALLOC_FREE(buf);
return NT_STATUS_OK;
}
@@ -540,6 +539,8 @@ static NTSTATUS ctdb_handle_message(const DATA_BLOB *data,
*/
message_send_all(conn->msg_ctx, MSG_SMB_UNLOCK, NULL, 0, NULL);
+ TALLOC_FREE(buf);
+
return NT_STATUS_OK;
}
@@ -548,17 +549,20 @@ static NTSTATUS ctdb_handle_message(const DATA_BLOB *data,
if (msg->srvid != sys_getpid() && msg->srvid != MSG_SRVID_SAMBA) {
DEBUG(0,("Got unexpected message with srvid=%llu\n",
(unsigned long long)msg->srvid));
+ TALLOC_FREE(buf);
return NT_STATUS_OK;
}
- if (!(msg_rec = ctdb_pull_messaging_rec(NULL, data->length, msg))) {
+ if (!(msg_rec = ctdb_pull_messaging_rec(NULL, length, msg))) {
DEBUG(10, ("ctdb_pull_messaging_rec failed\n"));
+ TALLOC_FREE(buf);
return NT_STATUS_NO_MEMORY;
}
messaging_dispatch_rec(conn->msg_ctx, msg_rec);
TALLOC_FREE(msg_rec);
+ TALLOC_FREE(buf);
return NT_STATUS_OK;
}
@@ -1025,7 +1029,7 @@ struct ctdbd_traverse_state {
* Handle a traverse record coming in on the ctdbd connection
*/
-static NTSTATUS ctdb_traverse_handler(const DATA_BLOB *blob,
+static NTSTATUS ctdb_traverse_handler(uint8_t *buf, size_t length,
void *private_data)
{
struct ctdbd_traverse_state *state =
@@ -1035,11 +1039,11 @@ static NTSTATUS ctdb_traverse_handler(const DATA_BLOB *blob,
struct ctdb_rec_data *d;
TDB_DATA key, data;
- m = (struct ctdb_req_message *)blob->data;
+ m = (struct ctdb_req_message *)buf;
- if (blob->length < sizeof(*m) || m->hdr.length != blob->length) {
- DEBUG(0, ("Got invalid message of length %d\n",
- (int)blob->length));
+ if (length < sizeof(*m) || m->hdr.length != length) {
+ DEBUG(0, ("Got invalid message of length %d\n", (int)length));
+ TALLOC_FREE(buf);
return NT_STATUS_UNEXPECTED_IO_ERROR;
}
@@ -1047,6 +1051,7 @@ static NTSTATUS ctdb_traverse_handler(const DATA_BLOB *blob,
if (m->datalen < sizeof(uint32_t) || m->datalen != d->length) {
DEBUG(0, ("Got invalid traverse data of length %d\n",
(int)m->datalen));
+ TALLOC_FREE(buf);
return NT_STATUS_UNEXPECTED_IO_ERROR;
}
@@ -1063,6 +1068,7 @@ static NTSTATUS ctdb_traverse_handler(const DATA_BLOB *blob,
if (data.dsize < sizeof(struct ctdb_ltdb_header)) {
DEBUG(0, ("Got invalid ltdb header length %d\n",
(int)data.dsize));
+ TALLOC_FREE(buf);
return NT_STATUS_UNEXPECTED_IO_ERROR;
}
data.dsize -= sizeof(struct ctdb_ltdb_header);
@@ -1072,6 +1078,7 @@ static NTSTATUS ctdb_traverse_handler(const DATA_BLOB *blob,
state->fn(key, data, state->private_data);
}
+ TALLOC_FREE(buf);
return NT_STATUS_OK;
}
diff --git a/source3/lib/packet.c b/source3/lib/packet.c
index e4cab6ba87..72de30e8ca 100644
--- a/source3/lib/packet.c
+++ b/source3/lib/packet.c
@@ -120,33 +120,37 @@ NTSTATUS packet_fd_read_sync(struct packet_context *ctx)
}
bool packet_handler(struct packet_context *ctx,
- bool (*full_req)(const DATA_BLOB *data,
+ bool (*full_req)(const uint8_t *buf,
+ size_t available,
size_t *length,
- void *private_data),
- NTSTATUS (*callback)(const DATA_BLOB *data,
- void *private_data),
- void *private_data,
- NTSTATUS *status)
+ void *priv),
+ NTSTATUS (*callback)(uint8_t *buf, size_t length,
+ void *priv),
+ void *priv, NTSTATUS *status)
{
size_t length;
- DATA_BLOB data;
+ uint8_t *buf;
- if (!full_req(&ctx->in, &length, private_data)) {
+ if (!full_req(ctx->in.data, ctx->in.length, &length, priv)) {
return False;
}
- SMB_ASSERT(length <= ctx->in.length);
+ if (length > ctx->in.length) {
+ *status = NT_STATUS_INTERNAL_ERROR;
+ return true;
+ }
- data = data_blob(ctx->in.data, length);
+ buf = (uint8_t *)TALLOC_MEMDUP(ctx, ctx->in.data, length);
+ if (buf == NULL) {
+ *status = NT_STATUS_NO_MEMORY;
+ return true;
+ }
memmove(ctx->in.data, ctx->in.data + length,
ctx->in.length - length);
ctx->in.length -= length;
- *status = callback(&data, private_data);
-
- data_blob_free(&data);
-
+ *status = callback(buf, length, priv);
return True;
}
generated by cgit (git 2.34.1) at 2024-12-19 23:49:14 +0000