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-rw-r--r--source4/librpc/rpc/dcerpc_connect.c34
1 files changed, 28 insertions, 6 deletions
diff --git a/source4/librpc/rpc/dcerpc_connect.c b/source4/librpc/rpc/dcerpc_connect.c
index d98c296a3f..9af54740a2 100644
--- a/source4/librpc/rpc/dcerpc_connect.c
+++ b/source4/librpc/rpc/dcerpc_connect.c
@@ -43,16 +43,18 @@ struct pipe_np_smb_state {
};
+/*
+ Stage 3 of ncacn_np_smb: Named pipe opened (?)
+*/
void continue_pipe_open_smb(struct composite_context *ctx)
{
struct composite_context *c = talloc_get_type(ctx->async.private_data,
struct composite_context);
struct pipe_np_smb_state *s = talloc_get_type(c->private_data,
struct pipe_np_smb_state);
-
+ /* receive result of named pipe open request */
c->status = dcerpc_pipe_open_smb_recv(ctx);
if (!NT_STATUS_IS_OK(c->status)) {
-
DEBUG(0,("Failed to open pipe %s - %s\n", s->io.pipe_name, nt_errstr(c->status)));
composite_error(c, c->status);
return;
@@ -61,7 +63,9 @@ void continue_pipe_open_smb(struct composite_context *ctx)
composite_done(c);
}
-
+/*
+ Stage 2 of ncacn_np_smb: Open a named pipe after successful smb connection
+*/
void continue_smb_connect(struct composite_context *ctx)
{
struct composite_context *open_ctx;
@@ -70,17 +74,19 @@ void continue_smb_connect(struct composite_context *ctx)
struct pipe_np_smb_state *s = talloc_get_type(c->private_data,
struct pipe_np_smb_state);
+ /* receive result of smb connect request */
c->status = smb_composite_connect_recv(ctx, c);
if (!NT_STATUS_IS_OK(c->status)) {
-
DEBUG(0,("Failed to connect to %s - %s\n", s->io.binding->host, nt_errstr(c->status)));
composite_error(c, c->status);
return;
}
+ /* prepare named pipe open parameters */
s->tree = s->conn.out.tree;
s->io.pipe_name = s->io.binding->endpoint;
+ /* send named pipe open request */
open_ctx = dcerpc_pipe_open_smb_send(s->io.pipe->conn, s->tree, s->io.pipe_name);
if (open_ctx == NULL) {
composite_error(c, NT_STATUS_NO_MEMORY);
@@ -91,8 +97,10 @@ void continue_smb_connect(struct composite_context *ctx)
}
-/* open a rpc connection to a rpc pipe on SMB using the binding
- structure to determine the endpoint and options */
+/*
+ Initiate async open of a rpc connection to a rpc pipe on SMB using
+ the binding structure to determine the endpoint and options
+*/
struct composite_context *dcerpc_pipe_connect_ncacn_np_smb_send(TALLOC_CTX *tmp_ctx,
struct dcerpc_pipe_connect *io)
{
@@ -101,6 +109,7 @@ struct composite_context *dcerpc_pipe_connect_ncacn_np_smb_send(TALLOC_CTX *tmp_
struct composite_context *conn_req;
struct smb_composite_connect *conn;
+ /* composite context allocation and setup */
c = talloc_zero(tmp_ctx, struct composite_context);
if (c == NULL) return NULL;
@@ -117,6 +126,8 @@ struct composite_context *dcerpc_pipe_connect_ncacn_np_smb_send(TALLOC_CTX *tmp_
s->io = *io;
conn = &s->conn;
+ /* prepare smb connection parameters: we're connecting to IPC$ share on
+ remote rpc server */
conn->in.dest_host = s->io.binding->host;
conn->in.port = 0;
conn->in.called_name = strupper_talloc(tmp_ctx, s->io.binding->host);
@@ -125,6 +136,10 @@ struct composite_context *dcerpc_pipe_connect_ncacn_np_smb_send(TALLOC_CTX *tmp_
conn->in.fallback_to_anonymous = False;
conn->in.workgroup = lp_workgroup();
+ /*
+ * provide proper credentials - user supplied or anonymous in case this is
+ * schannel connection
+ */
if (s->io.binding->flags & DCERPC_SCHANNEL) {
struct cli_credentials *anon_creds;
@@ -143,6 +158,7 @@ struct composite_context *dcerpc_pipe_connect_ncacn_np_smb_send(TALLOC_CTX *tmp_
s->conn.in.credentials = s->io.creds;
}
+ /* send smb connect request */
conn_req = smb_composite_connect_send(conn, s->io.pipe->conn, s->io.pipe->conn->event_ctx);
if (!conn_req) {
composite_error(c, NT_STATUS_NO_MEMORY);
@@ -156,6 +172,9 @@ done:
}
+/*
+ Receive result of a rpc connection to a rpc pipe on SMB
+*/
NTSTATUS dcerpc_pipe_connect_ncacn_np_smb_recv(struct composite_context *c)
{
NTSTATUS status = composite_wait(c);
@@ -165,6 +184,9 @@ NTSTATUS dcerpc_pipe_connect_ncacn_np_smb_recv(struct composite_context *c)
}
+/*
+ Sync version of a rpc connection to a rpc pipe on SMB
+*/
NTSTATUS dcerpc_pipe_connect_ncacn_np_smb(TALLOC_CTX *tmp_ctx,
struct dcerpc_pipe_connect *io)
{