* prepared the dcerpc subsystem for adding the RPC over TCP transport

 * fixed a uninitialised variable bug in pidl (found by valgrind)
(This used to be commit 8bce61b8af6351c72c0dd84dc61b49d8aeb1fbbd)

3 files changed, 172 insertions, 102 deletions

diff --git a/source4/librpc/rpc/dcerpc.c b/source4/librpc/rpc/dcerpc.c
index 276b3c9ef4..495e36ec1f 100644
--- a/source4/librpc/rpc/dcerpc.c
+++ b/source4/librpc/rpc/dcerpc.c
@@ -40,10 +40,7 @@ struct dcerpc_pipe *dcerpc_pipe_init(struct cli_tree *tree)
 
 	p->reference_count = 0;
 	p->mem_ctx = mem_ctx;
-	p->tree = tree;
-	p->tree->reference_count++;
 	p->call_id = 1;
-	p->fnum = 0;
 
 	return p;
 }
@@ -54,7 +51,7 @@ void dcerpc_pipe_close(struct dcerpc_pipe *p)
 	if (!p) return;
 	p->reference_count--;
 	if (p->reference_count <= 0) {
-		cli_tree_close(p->tree);
+		p->transport.shutdown_pipe(p);
 		talloc_destroy(p->mem_ctx);
 	}
 }
@@ -167,7 +164,7 @@ NTSTATUS dcerpc_bind(struct dcerpc_pipe *p,
 		return status;
 	}
 
-	status = dcerpc_raw_packet(p, mem_ctx, &blob, &blob_out);
+	status = p->transport.full_request(p, mem_ctx, &blob, &blob_out);
 	if (!NT_STATUS_IS_OK(status)) {
 		talloc_destroy(mem_ctx);
 		return status;
@@ -269,7 +266,7 @@ NTSTATUS dcerpc_request(struct dcerpc_pipe *p,
 			return status;
 		}
 		
-		status = dcerpc_raw_packet_initial(p, mem_ctx, &blob_in);
+		status = p->transport.initial_request(p, mem_ctx, &blob_in);
 		if (!NT_STATUS_IS_OK(status)) {
 			return status;
 		}		
@@ -294,7 +291,7 @@ NTSTATUS dcerpc_request(struct dcerpc_pipe *p,
 	}
 
 	/* send the pdu and get the initial response pdu */
-	status = dcerpc_raw_packet(p, mem_ctx, &blob_in, &blob_out);
+	status = p->transport.full_request(p, mem_ctx, &blob_in, &blob_out);
 
 	status = dcerpc_pull(&blob_out, mem_ctx, &pkt);
 	if (!NT_STATUS_IS_OK(status)) {
@@ -320,7 +317,7 @@ NTSTATUS dcerpc_request(struct dcerpc_pipe *p,
 	while (!(pkt.pfc_flags & DCERPC_PFC_FLAG_LAST)) {
 		uint32 length;
 
-		status = dcerpc_raw_packet_secondary(p, mem_ctx, &blob_out);
+		status = p->transport.secondary_request(p, mem_ctx, &blob_out);
 		if (!NT_STATUS_IS_OK(status)) {
 			return status;
 		}
@@ -596,5 +593,8 @@ failed:
 */
 const char *dcerpc_server_name(struct dcerpc_pipe *p)
 {
-	return p->tree->session->transport->called.name;
+	if (!p->transport.peer_name) {
+		return "";
+	}
+	return p->transport.peer_name(p);
 }
diff --git a/source4/librpc/rpc/dcerpc.h b/source4/librpc/rpc/dcerpc.h
index 6ba0f8429a..e0e7c8bd5a 100644
--- a/source4/librpc/rpc/dcerpc.h
+++ b/source4/librpc/rpc/dcerpc.h
@@ -31,13 +31,21 @@
 
 struct dcerpc_pipe {
 	TALLOC_CTX *mem_ctx;
-	uint16 fnum;
 	int reference_count;
 	uint32 call_id;
 	uint32 srv_max_xmit_frag;
 	uint32 srv_max_recv_frag;
-	struct cli_tree *tree;
 	unsigned flags;
+
+	struct dcerpc_transport {
+		void *private;
+		NTSTATUS (*full_request)(struct dcerpc_pipe *, 
+					 TALLOC_CTX *, DATA_BLOB *, DATA_BLOB *);
+		NTSTATUS (*secondary_request)(struct dcerpc_pipe *, TALLOC_CTX *, DATA_BLOB *);
+		NTSTATUS (*initial_request)(struct dcerpc_pipe *, TALLOC_CTX *, DATA_BLOB *);
+		NTSTATUS (*shutdown_pipe)(struct dcerpc_pipe *);
+		const char *(*peer_name)(struct dcerpc_pipe *);
+	} transport;
 };
 
 /* dcerpc pipe flags */
diff --git a/source4/librpc/rpc/dcerpc_smb.c b/source4/librpc/rpc/dcerpc_smb.c
index a5570a4ea9..ba9c0c62a2 100644
--- a/source4/librpc/rpc/dcerpc_smb.c
+++ b/source4/librpc/rpc/dcerpc_smb.c
@@ -22,76 +22,15 @@
 
 #include "includes.h"
 
+/* transport private information used by SMB pipe transport */
+struct smb_private {
+	uint16 fnum;
+	struct cli_tree *tree;
+};
 
-/* 
-   open a rpc connection to a named pipe 
-*/
-NTSTATUS dcerpc_pipe_open_smb(struct dcerpc_pipe *p, 
-			      const char *pipe_name,
-			      const char *pipe_uuid, 
-			      uint32 pipe_version)
-{
-        NTSTATUS status;
-	char *name = NULL;
-	union smb_open io;
-	TALLOC_CTX *mem_ctx;
-
-	asprintf(&name, "\\%s", pipe_name);
-	if (!name) {
-		return NT_STATUS_NO_MEMORY;
-	}
-
-	io.ntcreatex.level = RAW_OPEN_NTCREATEX;
-	io.ntcreatex.in.flags = 0;
-	io.ntcreatex.in.root_fid = 0;
-	io.ntcreatex.in.access_mask = 
-		STD_RIGHT_READ_CONTROL_ACCESS | 
-		SA_RIGHT_FILE_WRITE_ATTRIBUTES | 
-		SA_RIGHT_FILE_WRITE_EA | 
-		GENERIC_RIGHTS_FILE_READ |
-		GENERIC_RIGHTS_FILE_WRITE;
-	io.ntcreatex.in.file_attr = 0;
-	io.ntcreatex.in.alloc_size = 0;
-	io.ntcreatex.in.share_access = 
-		NTCREATEX_SHARE_ACCESS_READ |
-		NTCREATEX_SHARE_ACCESS_WRITE;
-	io.ntcreatex.in.open_disposition = NTCREATEX_DISP_OPEN;
-	io.ntcreatex.in.create_options = 0;
-	io.ntcreatex.in.impersonation = NTCREATEX_IMPERSONATION_IMPERSONATION;
-	io.ntcreatex.in.security_flags = 0;
-	io.ntcreatex.in.fname = name;
-
-	mem_ctx = talloc_init("torture_rpc_connection");
-	if (!mem_ctx) {
-		return NT_STATUS_NO_MEMORY;
-	}
-	status = smb_raw_open(p->tree, mem_ctx, &io);
-	free(name);
-	talloc_destroy(mem_ctx);
-
-	if (!NT_STATUS_IS_OK(status)) {
-                return status;
-        }
- 
-	p->fnum = io.ntcreatex.out.fnum;
-
-	/* bind to the pipe, using the pipe_name as the key */
-	status = dcerpc_bind_byuuid(p, pipe_uuid, pipe_version);
-
-	if (!NT_STATUS_IS_OK(status)) {
-		union smb_close c;
-		c.close.level = RAW_CLOSE_CLOSE;
-		c.close.in.fnum = p->fnum;
-		c.close.in.write_time = 0;
-		smb_raw_close(p->tree, &c);
-	}
-
-        return status;
-}
-
-
-struct cli_request *dcerpc_raw_send(struct dcerpc_pipe *p, DATA_BLOB *blob)
+static struct cli_request *dcerpc_raw_send(struct dcerpc_pipe *p, DATA_BLOB *blob)
 {
+	struct smb_private *smb = p->transport.private;
 	struct smb_trans2 trans;
 	uint16 setup[2];
 	struct cli_request *req;
@@ -104,7 +43,7 @@ struct cli_request *dcerpc_raw_send(struct dcerpc_pipe *p, DATA_BLOB *blob)
 	trans.in.params = data_blob(NULL, 0);
 	
 	setup[0] = TRANSACT_DCERPCCMD;
-	setup[1] = p->fnum;
+	setup[1] = smb->fnum;
 
 	trans.in.max_param = 0;
 	trans.in.max_data = 0x8000;
@@ -115,7 +54,7 @@ struct cli_request *dcerpc_raw_send(struct dcerpc_pipe *p, DATA_BLOB *blob)
 	trans.in.setup = setup;
 	trans.in.trans_name = "\\PIPE\\";
 
-	req = smb_raw_trans_send(p->tree, &trans);
+	req = smb_raw_trans_send(smb->tree, &trans);
 
 	talloc_destroy(mem_ctx);
 
@@ -123,11 +62,12 @@ struct cli_request *dcerpc_raw_send(struct dcerpc_pipe *p, DATA_BLOB *blob)
 }
 
 
-NTSTATUS dcerpc_raw_recv(struct dcerpc_pipe *p, 
-			 struct cli_request *req,
-			 TALLOC_CTX *mem_ctx,
-			 DATA_BLOB *blob)
+static NTSTATUS dcerpc_raw_recv(struct dcerpc_pipe *p, 
+				struct cli_request *req,
+				TALLOC_CTX *mem_ctx,
+				DATA_BLOB *blob)
 {
+	struct smb_private *smb = p->transport.private;
 	struct smb_trans2 trans;
 	NTSTATUS status;
 	uint16 frag_length;
@@ -172,13 +112,13 @@ NTSTATUS dcerpc_raw_recv(struct dcerpc_pipe *p,
 		}
 
 		io.generic.level = RAW_READ_READX;
-		io.readx.in.fnum = p->fnum;
+		io.readx.in.fnum = smb->fnum;
 		io.readx.in.mincnt = n;
 		io.readx.in.maxcnt = n;
 		io.readx.in.offset = 0;
 		io.readx.in.remaining = 0;
 		io.readx.out.data = payload.data + payload.length;
-		status = smb_raw_read(p->tree, &io);
+		status = smb_raw_read(smb->tree, &io);
 		if (!NT_STATUS_IS_OK(status) &&
 		    !NT_STATUS_EQUAL(status, STATUS_BUFFER_OVERFLOW)) {
 			break;
@@ -207,10 +147,10 @@ done:
 	return status;
 }
 
-NTSTATUS dcerpc_raw_packet(struct dcerpc_pipe *p, 
-			   TALLOC_CTX *mem_ctx,
-			   DATA_BLOB *request_blob,
-			   DATA_BLOB *reply_blob)
+static NTSTATUS smb_full_request(struct dcerpc_pipe *p, 
+				 TALLOC_CTX *mem_ctx,
+				 DATA_BLOB *request_blob,
+				 DATA_BLOB *reply_blob)
 {
 	struct cli_request *req;
 	req = dcerpc_raw_send(p, request_blob);
@@ -221,10 +161,11 @@ NTSTATUS dcerpc_raw_packet(struct dcerpc_pipe *p,
 /* 
    retrieve a secondary pdu from a pipe 
 */
-NTSTATUS dcerpc_raw_packet_secondary(struct dcerpc_pipe *p, 
-				     TALLOC_CTX *mem_ctx,
-				     DATA_BLOB *blob)
+NTSTATUS smb_secondary_request(struct dcerpc_pipe *p, 
+			       TALLOC_CTX *mem_ctx,
+			       DATA_BLOB *blob)
 {
+	struct smb_private *smb = p->transport.private;
 	union smb_read io;
 	uint32 n = 0x2000;
 	uint32 frag_length;
@@ -236,14 +177,14 @@ NTSTATUS dcerpc_raw_packet_secondary(struct dcerpc_pipe *p,
 	}
 
 	io.generic.level = RAW_READ_READX;
-	io.readx.in.fnum = p->fnum;
+	io.readx.in.fnum = smb->fnum;
 	io.readx.in.mincnt = n;
 	io.readx.in.maxcnt = n;
 	io.readx.in.offset = 0;
 	io.readx.in.remaining = 0;
 	io.readx.out.data = blob->data;
 
-	status = smb_raw_read(p->tree, &io);
+	status = smb_raw_read(smb->tree, &io);
 	if (!NT_STATUS_IS_OK(status) &&
 	    !NT_STATUS_EQUAL(status, STATUS_BUFFER_OVERFLOW)) {
 		return status;
@@ -276,7 +217,7 @@ NTSTATUS dcerpc_raw_packet_secondary(struct dcerpc_pipe *p,
 		io.readx.in.mincnt = n;
 		io.readx.in.maxcnt = n;
 		io.readx.out.data = blob->data + blob->length;
-		status = smb_raw_read(p->tree, &io);
+		status = smb_raw_read(smb->tree, &io);
 
 		if (!NT_STATUS_IS_OK(status) &&
 		    !NT_STATUS_EQUAL(status, STATUS_BUFFER_OVERFLOW)) {
@@ -294,22 +235,23 @@ NTSTATUS dcerpc_raw_packet_secondary(struct dcerpc_pipe *p,
 /* 
    send an initial pdu in a multi-pdu sequence
 */
-NTSTATUS dcerpc_raw_packet_initial(struct dcerpc_pipe *p, 
-				   TALLOC_CTX *mem_ctx,
-				   DATA_BLOB *blob)
+static NTSTATUS smb_initial_request(struct dcerpc_pipe *p, 
+				    TALLOC_CTX *mem_ctx,
+				    DATA_BLOB *blob)
 {
+	struct smb_private *smb = p->transport.private;
 	union smb_write io;
 	NTSTATUS status;
 
 	io.generic.level = RAW_WRITE_WRITEX;
-	io.writex.in.fnum = p->fnum;
+	io.writex.in.fnum = smb->fnum;
 	io.writex.in.offset = 0;
 	io.writex.in.wmode = PIPE_START_MESSAGE;
 	io.writex.in.remaining = blob->length;
 	io.writex.in.count = blob->length;
 	io.writex.in.data = blob->data;
 
-	status = smb_raw_write(p->tree, &io);
+	status = smb_raw_write(smb->tree, &io);
 	if (NT_STATUS_IS_OK(status)) {
 		return status;
 	}
@@ -321,3 +263,123 @@ NTSTATUS dcerpc_raw_packet_initial(struct dcerpc_pipe *p,
 
 	return status;
 }
+
+
+/* 
+   shutdown SMB pipe connection
+*/
+static NTSTATUS smb_shutdown_pipe(struct dcerpc_pipe *p)
+{
+	struct smb_private *smb = p->transport.private;
+	union smb_close c;
+
+	/* maybe we're still starting up */
+	if (!smb) return NT_STATUS_OK;
+
+	c.close.level = RAW_CLOSE_CLOSE;
+	c.close.in.fnum = smb->fnum;
+	c.close.in.write_time = 0;
+	smb_raw_close(smb->tree, &c);
+	cli_tree_close(smb->tree);
+
+	return NT_STATUS_OK;
+}
+
+/*
+  return SMB server name
+*/
+static const char *smb_peer_name(struct dcerpc_pipe *p)
+{
+	struct smb_private *smb = p->transport.private;
+	return smb->tree->session->transport->called.name;
+}
+
+
+/* 
+   open a rpc connection to a named pipe 
+*/
+NTSTATUS dcerpc_pipe_open_smb(struct dcerpc_pipe **p, 
+			      struct cli_tree *tree,
+			      const char *pipe_name,
+			      const char *pipe_uuid, 
+			      uint32 pipe_version)
+{
+	struct smb_private *smb;
+        NTSTATUS status;
+	char *name = NULL;
+	union smb_open io;
+	TALLOC_CTX *mem_ctx;
+
+	asprintf(&name, "\\%s", pipe_name);
+	if (!name) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	io.ntcreatex.level = RAW_OPEN_NTCREATEX;
+	io.ntcreatex.in.flags = 0;
+	io.ntcreatex.in.root_fid = 0;
+	io.ntcreatex.in.access_mask = 
+		STD_RIGHT_READ_CONTROL_ACCESS | 
+		SA_RIGHT_FILE_WRITE_ATTRIBUTES | 
+		SA_RIGHT_FILE_WRITE_EA | 
+		GENERIC_RIGHTS_FILE_READ |
+		GENERIC_RIGHTS_FILE_WRITE;
+	io.ntcreatex.in.file_attr = 0;
+	io.ntcreatex.in.alloc_size = 0;
+	io.ntcreatex.in.share_access = 
+		NTCREATEX_SHARE_ACCESS_READ |
+		NTCREATEX_SHARE_ACCESS_WRITE;
+	io.ntcreatex.in.open_disposition = NTCREATEX_DISP_OPEN;
+	io.ntcreatex.in.create_options = 0;
+	io.ntcreatex.in.impersonation = NTCREATEX_IMPERSONATION_IMPERSONATION;
+	io.ntcreatex.in.security_flags = 0;
+	io.ntcreatex.in.fname = name;
+
+	mem_ctx = talloc_init("torture_rpc_connection");
+	if (!mem_ctx) {
+		free(name);
+		return NT_STATUS_NO_MEMORY;
+	}
+	status = smb_raw_open(tree, mem_ctx, &io);
+	free(name);
+	talloc_destroy(mem_ctx);
+
+	if (!NT_STATUS_IS_OK(status)) {
+                return status;
+        }
+
+        if (!(*p = dcerpc_pipe_init(tree))) {
+                return NT_STATUS_NO_MEMORY;
+	}
+ 
+	/*
+	  fill in the transport methods
+	*/
+	(*p)->transport.private = NULL;
+	(*p)->transport.full_request = smb_full_request;
+	(*p)->transport.secondary_request = smb_secondary_request;
+	(*p)->transport.initial_request = smb_initial_request;
+	(*p)->transport.shutdown_pipe = smb_shutdown_pipe;
+	(*p)->transport.peer_name = smb_peer_name;
+	
+	smb = talloc((*p)->mem_ctx, sizeof(*smb));
+	if (!smb) {
+		dcerpc_pipe_close(*p);
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	smb->fnum = io.ntcreatex.out.fnum;
+	smb->tree = tree;
+
+	(*p)->transport.private = smb;
+	tree->reference_count++;
+
+	/* bind to the pipe, using the uuid as the key */
+	status = dcerpc_bind_byuuid(*p, pipe_uuid, pipe_version);
+
+	if (!NT_STATUS_IS_OK(status)) {
+		dcerpc_pipe_close(*p);
+	}
+
+        return status;
+}