[SCM] Samba Shared Repository - branch master updated - release-4-0-0alpha6-103-gb7094c0

Volker Lendecke vlendec at samba.org
Thu Jan 22 22:00:31 GMT 2009


The branch, master has been updated
       via  b7094c0b804984de8e0b50c17e7908a2685df557 (commit)
       via  b7bd71b34969927e39d5d24c766efeda262ee5bd (commit)
       via  c5b43710543a83e25c387566691031a357f5a1da (commit)
       via  9b140c7c81c87c229fb7b95cf817bafb0da7fae0 (commit)
       via  42fa1441bf17ae486ebca5553e503242a653c92c (commit)
      from  1fcd85e8b9235301c7bc6c4c0878e73ddcbd4b16 (commit)

http://gitweb.samba.org/?p=samba.git;a=shortlog;h=master


- Log -----------------------------------------------------------------
commit b7094c0b804984de8e0b50c17e7908a2685df557
Author: Volker Lendecke <vl at samba.org>
Date:   Thu Jan 22 18:52:15 2009 +0100

    Abstract away the transport in cli_pipe.c
    
    Sorry for the monster checkin, I could not really find a way to do this in
    steps.

commit b7bd71b34969927e39d5d24c766efeda262ee5bd
Author: Volker Lendecke <vl at samba.org>
Date:   Thu Jan 22 18:39:29 2009 +0100

    Add the socket rpc client transport

commit c5b43710543a83e25c387566691031a357f5a1da
Author: Volker Lendecke <vl at samba.org>
Date:   Thu Jan 22 18:34:06 2009 +0100

    Add the named pipe rpc client transport

commit 9b140c7c81c87c229fb7b95cf817bafb0da7fae0
Author: Volker Lendecke <vl at samba.org>
Date:   Thu Jan 22 22:04:55 2009 +0100

    RPC_CLIENT_OBJ is the right variable for cli_pipe.o

commit 42fa1441bf17ae486ebca5553e503242a653c92c
Author: Volker Lendecke <vl at samba.org>
Date:   Thu Jan 22 18:50:37 2009 +0100

    Add struct rpc_cli_transport

-----------------------------------------------------------------------

Summary of changes:
 source3/Makefile.in                     |    7 +-
 source3/include/client.h                |   63 ++++-
 source3/include/proto.h                 |   12 +-
 source3/rpc_client/cli_pipe.c           |  477 +++++++++++--------------------
 source3/rpc_client/rpc_transport_np.c   |  329 +++++++++++++++++++++
 source3/rpc_client/rpc_transport_sock.c |  116 ++++++++
 6 files changed, 684 insertions(+), 320 deletions(-)
 create mode 100644 source3/rpc_client/rpc_transport_np.c
 create mode 100644 source3/rpc_client/rpc_transport_sock.c


Changeset truncated at 500 lines:

diff --git a/source3/Makefile.in b/source3/Makefile.in
index 1924ade..3cbefc8 100644
--- a/source3/Makefile.in
+++ b/source3/Makefile.in
@@ -576,7 +576,8 @@ RPC_PARSE_OBJ = $(RPC_PARSE_OBJ2) \
                 rpc_parse/parse_spoolss.o \
 	        rpc_parse/parse_eventlog.o rpc_parse/parse_buffer.o
 
-RPC_CLIENT_OBJ = rpc_client/cli_pipe.o
+RPC_CLIENT_OBJ = rpc_client/cli_pipe.o rpc_client/rpc_transport_np.o \
+	rpc_client/rpc_transport_sock.o
 
 LOCKING_OBJ = locking/locking.o locking/brlock.o locking/posix.o
 
@@ -761,7 +762,7 @@ SMBCONTROL_OBJ = utils/smbcontrol.o $(LOCKING_OBJ) $(PARAM_OBJ) \
 SMBTREE_OBJ = utils/smbtree.o $(PARAM_OBJ) \
              $(PROFILE_OBJ) $(LIB_NONSMBD_OBJ) $(LIBSMB_OBJ) \
 	     $(KRBCLIENT_OBJ) $(POPT_LIB_OBJ) \
-             rpc_client/cli_pipe.o ../librpc/rpc/binding.o $(RPC_PARSE_OBJ2) \
+             $(RPC_CLIENT_OBJ) ../librpc/rpc/binding.o $(RPC_PARSE_OBJ2) \
              $(RPC_CLIENT_OBJ1) \
 	     $(PASSDB_OBJ) @LIBWBCLIENT_STATIC@ $(SMBLDAP_OBJ) $(LDB_OBJ) $(GROUPDB_OBJ) \
 	     $(LIBMSRPC_GEN_OBJ)
@@ -844,7 +845,7 @@ LIBBIGBALLOFMUD_OBJ = $(PARAM_OBJ) $(LIB_NONSMBD_OBJ) \
 	$(LIBSMB_OBJ) $(LIBMSRPC_OBJ) $(LIBMSRPC_GEN_OBJ) $(RPC_PARSE_OBJ) $(PASSDB_OBJ) @LIBWBCLIENT_STATIC@ \
 	$(GROUPDB_OBJ) $(KRBCLIENT_OBJ) $(SMBLDAP_OBJ) $(LDB_OBJ)
 
-CLIENT_OBJ1 = client/client.o client/clitar.o rpc_client/cli_pipe.o \
+CLIENT_OBJ1 = client/client.o client/clitar.o $(RPC_CLIENT_OBJ) \
 	      ../librpc/rpc/binding.o \
 	      client/dnsbrowse.o \
 	      $(RPC_CLIENT_OBJ1) \
diff --git a/source3/include/client.h b/source3/include/client.h
index 09fdb81..d62d1c0 100644
--- a/source3/include/client.h
+++ b/source3/include/client.h
@@ -61,21 +61,60 @@ struct cli_pipe_auth_data {
 	} a_u;
 };
 
+/**
+ * rpc_cli_transport defines a transport mechanism to ship rpc requests
+ * asynchronously to a server and receive replies
+ */
+
+struct rpc_cli_transport {
+
+	/**
+	 * Trigger an async read from the server. May return a short read.
+	 */
+	struct async_req *(*read_send)(TALLOC_CTX *mem_ctx,
+				       struct event_context *ev,
+                                       uint8_t *data, size_t size,
+				       void *priv);
+	/**
+	 * Get the result from the read_send operation.
+	 */
+	NTSTATUS (*read_recv)(struct async_req *req, ssize_t *preceived);
+
+	/**
+	 * Trigger an async write to the server. May return a short write.
+	 */
+	struct async_req *(*write_send)(TALLOC_CTX *mem_ctx,
+					struct event_context *ev,
+					const uint8_t *data, size_t size,
+					void *priv);
+	/**
+	 * Get the result from the read_send operation.
+	 */
+	NTSTATUS (*write_recv)(struct async_req *req, ssize_t *psent);
+
+	/**
+	 * This is an optimization for the SMB transport. It models the
+	 * TransactNamedPipe API call: Send and receive data in one round
+	 * trip. The transport implementation is free to set this to NULL,
+	 * cli_pipe.c will fall back to the explicit write/read routines.
+	 */
+	struct async_req *(*trans_send)(TALLOC_CTX *mem_ctx,
+					struct event_context *ev,
+					uint8_t *data, size_t data_len,
+					uint32_t max_rdata_len,
+					void *priv);
+	/**
+	 * Get the result from the read_send operation.
+	 */
+	NTSTATUS (*trans_recv)(struct async_req *req, TALLOC_CTX *mem_ctx,
+			       uint8_t **prdata, uint32_t *prdata_len);
+	void *priv;
+};
+
 struct rpc_pipe_client {
 	struct rpc_pipe_client *prev, *next;
 
-	enum dcerpc_transport_t transport_type;
-
-	union {
-		struct {
-			struct cli_state *cli;
-			const char *pipe_name;
-			uint16 fnum;
-		} np;
-		struct {
-			int fd;
-		} sock;
-	} trans ;
+	struct rpc_cli_transport *transport;
 
 	struct ndr_syntax_id abstract_syntax;
 	struct ndr_syntax_id transfer_syntax;
diff --git a/source3/include/proto.h b/source3/include/proto.h
index d55546f..1554bfd 100644
--- a/source3/include/proto.h
+++ b/source3/include/proto.h
@@ -5216,7 +5216,6 @@ NTSTATUS rpc_pipe_bind(struct rpc_pipe_client *cli,
 unsigned int rpccli_set_timeout(struct rpc_pipe_client *cli,
 				unsigned int timeout);
 bool rpccli_get_pwd_hash(struct rpc_pipe_client *cli, uint8_t nt_hash[16]);
-struct cli_state *rpc_pipe_np_smb_conn(struct rpc_pipe_client *p);
 NTSTATUS rpccli_anon_bind_data(TALLOC_CTX *mem_ctx,
 			       struct cli_pipe_auth_data **presult);
 NTSTATUS rpccli_ntlmssp_bind_data(TALLOC_CTX *mem_ctx,
@@ -5296,6 +5295,17 @@ NTSTATUS cli_get_session_key(TALLOC_CTX *mem_ctx,
 			     struct rpc_pipe_client *cli,
 			     DATA_BLOB *session_key);
 
+/* The following definitions come from rpc_client/rpc_transport_np.c  */
+
+NTSTATUS rpc_transport_np_init(TALLOC_CTX *mem_ctx, struct cli_state *cli,
+			       const struct ndr_syntax_id *abstract_syntax,
+			       struct rpc_cli_transport **presult);
+struct cli_state *rpc_pipe_np_smb_conn(struct rpc_pipe_client *p);
+
+/* The following definitions come from rpc_client/rpc_transport_sock.c  */
+
+NTSTATUS rpc_transport_sock_init(TALLOC_CTX *mem_ctx, int fd,
+				 struct rpc_cli_transport **presult);
 
 /* The following definitions come from rpc_client/cli_reg.c  */
 
diff --git a/source3/rpc_client/cli_pipe.c b/source3/rpc_client/cli_pipe.c
index cf2c833..5a53c0d 100644
--- a/source3/rpc_client/cli_pipe.c
+++ b/source3/rpc_client/cli_pipe.c
@@ -136,28 +136,13 @@ static int map_pipe_auth_type_to_rpc_auth_type(enum pipe_auth_type auth_type)
 /********************************************************************
  Pipe description for a DEBUG
  ********************************************************************/
-static char *rpccli_pipe_txt(TALLOC_CTX *mem_ctx, struct rpc_pipe_client *cli)
+static const char *rpccli_pipe_txt(TALLOC_CTX *mem_ctx,
+				   struct rpc_pipe_client *cli)
 {
-	char *result;
-
-	switch (cli->transport_type) {
-	case NCACN_NP:
-		result = talloc_asprintf(mem_ctx, "host %s, pipe %s, "
-					 "fnum 0x%x",
-					 cli->desthost,
-					 cli->trans.np.pipe_name,
-					 (unsigned int)(cli->trans.np.fnum));
-		break;
-	case NCACN_IP_TCP:
-	case NCACN_UNIX_STREAM:
-		result = talloc_asprintf(mem_ctx, "host %s, fd %d",
-					 cli->desthost, cli->trans.sock.fd);
-		break;
-	default:
-		result = talloc_asprintf(mem_ctx, "host %s", cli->desthost);
-		break;
+	char *result = talloc_asprintf(mem_ctx, "host %s", cli->desthost);
+	if (result == NULL) {
+		return "pipe";
 	}
-	SMB_ASSERT(result != NULL);
 	return result;
 }
 
@@ -204,19 +189,18 @@ static bool rpc_grow_buffer(prs_struct *pdu, size_t size)
 
 struct rpc_read_state {
 	struct event_context *ev;
-	struct rpc_pipe_client *cli;
-	char *data;
+	struct rpc_cli_transport *transport;
+	uint8_t *data;
 	size_t size;
 	size_t num_read;
 };
 
-static void rpc_read_np_done(struct async_req *subreq);
-static void rpc_read_sock_done(struct async_req *subreq);
+static void rpc_read_done(struct async_req *subreq);
 
 static struct async_req *rpc_read_send(TALLOC_CTX *mem_ctx,
 				       struct event_context *ev,
-				       struct rpc_pipe_client *cli,
-				       char *data, size_t size)
+				       struct rpc_cli_transport *transport,
+				       uint8_t *data, size_t size)
 {
 	struct async_req *result, *subreq;
 	struct rpc_read_state *state;
@@ -226,48 +210,28 @@ static struct async_req *rpc_read_send(TALLOC_CTX *mem_ctx,
 		return NULL;
 	}
 	state->ev = ev;
-	state->cli = cli;
+	state->transport = transport;
 	state->data = data;
 	state->size = size;
 	state->num_read = 0;
 
 	DEBUG(5, ("rpc_read_send: data_to_read: %u\n", (unsigned int)size));
 
-	if (cli->transport_type == NCACN_NP) {
-		subreq = cli_read_andx_send(
-			state, ev, cli->trans.np.cli,
-			cli->trans.np.fnum, 0, size);
-		if (subreq == NULL) {
-			DEBUG(10, ("cli_read_andx_send failed\n"));
-			goto fail;
-		}
-		subreq->async.fn = rpc_read_np_done;
-		subreq->async.priv = result;
-		return result;
-	}
-
-	if ((cli->transport_type == NCACN_IP_TCP)
-	    || (cli->transport_type == NCACN_UNIX_STREAM)) {
-		subreq = recvall_send(state, ev, cli->trans.sock.fd,
-				      data, size, 0);
-		if (subreq == NULL) {
-			DEBUG(10, ("recvall_send failed\n"));
-			goto fail;
-		}
-		subreq->async.fn = rpc_read_sock_done;
-		subreq->async.priv = result;
-		return result;
+	subreq = transport->read_send(state, ev, (uint8_t *)data, size,
+				      transport->priv);
+	if (subreq == NULL) {
+		goto fail;
 	}
+	subreq->async.fn = rpc_read_done;
+	subreq->async.priv = result;
+	return result;
 
-	if (async_post_status(result, ev, NT_STATUS_INVALID_PARAMETER)) {
-		return result;
-	}
  fail:
 	TALLOC_FREE(result);
 	return NULL;
 }
 
-static void rpc_read_np_done(struct async_req *subreq)
+static void rpc_read_done(struct async_req *subreq)
 {
 	struct async_req *req = talloc_get_type_abort(
 		subreq->async.priv, struct async_req);
@@ -275,61 +239,31 @@ static void rpc_read_np_done(struct async_req *subreq)
 		req->private_data, struct rpc_read_state);
 	NTSTATUS status;
 	ssize_t received;
-	uint8_t *rcvbuf;
 
-	status = cli_read_andx_recv(subreq, &received, &rcvbuf);
-	/*
-	 * We can't TALLOC_FREE(subreq) as usual here, as rcvbuf still is a
-	 * child of that.
-	 */
-	if (NT_STATUS_EQUAL(status, NT_STATUS_BUFFER_TOO_SMALL)) {
-		status = NT_STATUS_OK;
-	}
+	status = state->transport->read_recv(subreq, &received);
+	TALLOC_FREE(subreq);
 	if (!NT_STATUS_IS_OK(status)) {
-		TALLOC_FREE(subreq);
 		async_req_error(req, status);
 		return;
 	}
 
-	memcpy(state->data + state->num_read, rcvbuf, received);
-	TALLOC_FREE(subreq);
-
 	state->num_read += received;
-
 	if (state->num_read == state->size) {
 		async_req_done(req);
 		return;
 	}
 
-	subreq = cli_read_andx_send(
-		state, state->ev, state->cli->trans.np.cli,
-		state->cli->trans.np.fnum, 0,
-		state->size - state->num_read);
-
+	subreq = state->transport->read_send(state, state->ev,
+					     state->data + state->num_read,
+					     state->size - state->num_read,
+					     state->transport->priv);
 	if (async_req_nomem(subreq, req)) {
 		return;
 	}
-
-	subreq->async.fn = rpc_read_np_done;
+	subreq->async.fn = rpc_read_done;
 	subreq->async.priv = req;
 }
 
-static void rpc_read_sock_done(struct async_req *subreq)
-{
-	struct async_req *req = talloc_get_type_abort(
-		subreq->async.priv, struct async_req);
-	NTSTATUS status;
-
-	status = recvall_recv(subreq);
-	TALLOC_FREE(subreq);
-	if (!NT_STATUS_IS_OK(status)) {
-		async_req_error(req, status);
-		return;
-	}
-
-	async_req_done(req);
-}
-
 static NTSTATUS rpc_read_recv(struct async_req *req)
 {
 	return async_req_simple_recv(req);
@@ -337,19 +271,18 @@ static NTSTATUS rpc_read_recv(struct async_req *req)
 
 struct rpc_write_state {
 	struct event_context *ev;
-	struct rpc_pipe_client *cli;
-	const char *data;
+	struct rpc_cli_transport *transport;
+	const uint8_t *data;
 	size_t size;
 	size_t num_written;
 };
 
-static void rpc_write_np_done(struct async_req *subreq);
-static void rpc_write_sock_done(struct async_req *subreq);
+static void rpc_write_done(struct async_req *subreq);
 
 static struct async_req *rpc_write_send(TALLOC_CTX *mem_ctx,
 					struct event_context *ev,
-					struct rpc_pipe_client *cli,
-					const char *data, size_t size)
+					struct rpc_cli_transport *transport,
+					const uint8_t *data, size_t size)
 {
 	struct async_req *result, *subreq;
 	struct rpc_write_state *state;
@@ -359,58 +292,35 @@ static struct async_req *rpc_write_send(TALLOC_CTX *mem_ctx,
 		return NULL;
 	}
 	state->ev = ev;
-	state->cli = cli;
+	state->transport = transport;
 	state->data = data;
 	state->size = size;
 	state->num_written = 0;
 
 	DEBUG(5, ("rpc_write_send: data_to_write: %u\n", (unsigned int)size));
 
-	if (cli->transport_type == NCACN_NP) {
-		subreq = cli_write_andx_send(
-			state, ev, cli->trans.np.cli,
-			cli->trans.np.fnum, 8, /* 8 means message mode. */
-			(uint8_t *)data, 0, size);
-		if (subreq == NULL) {
-			DEBUG(10, ("cli_write_andx_send failed\n"));
-			goto fail;
-		}
-		subreq->async.fn = rpc_write_np_done;
-		subreq->async.priv = result;
-		return result;
-	}
-
-	if ((cli->transport_type == NCACN_IP_TCP)
-	    || (cli->transport_type == NCACN_UNIX_STREAM)) {
-		subreq = sendall_send(state, ev, cli->trans.sock.fd,
-				      data, size, 0);
-		if (subreq == NULL) {
-			DEBUG(10, ("sendall_send failed\n"));
-			goto fail;
-		}
-		subreq->async.fn = rpc_write_sock_done;
-		subreq->async.priv = result;
-		return result;
-	}
-
-	if (async_post_status(result, ev, NT_STATUS_INVALID_PARAMETER)) {
-		return result;
+	subreq = transport->write_send(state, ev, data, size, transport->priv);
+	if (subreq == NULL) {
+		goto fail;
 	}
+	subreq->async.fn = rpc_write_done;
+	subreq->async.priv = result;
+	return result;
  fail:
 	TALLOC_FREE(result);
 	return NULL;
 }
 
-static void rpc_write_np_done(struct async_req *subreq)
+static void rpc_write_done(struct async_req *subreq)
 {
 	struct async_req *req = talloc_get_type_abort(
 		subreq->async.priv, struct async_req);
 	struct rpc_write_state *state = talloc_get_type_abort(
 		req->private_data, struct rpc_write_state);
 	NTSTATUS status;
-	size_t written;
+	ssize_t written;
 
-	status = cli_write_andx_recv(subreq, &written);
+	status = state->transport->write_recv(subreq, &written);
 	TALLOC_FREE(subreq);
 	if (!NT_STATUS_IS_OK(status)) {
 		async_req_error(req, status);
@@ -424,36 +334,17 @@ static void rpc_write_np_done(struct async_req *subreq)
 		return;
 	}
 
-	subreq = cli_write_andx_send(
-		state, state->ev, state->cli->trans.np.cli,
-		state->cli->trans.np.fnum, 8,
-		(uint8_t *)(state->data + state->num_written),
-		0, state->size - state->num_written);
-
+	subreq = state->transport->write_send(state, state->ev,
+					      state->data + state->num_written,
+					      state->size - state->num_written,
+					      state->transport->priv);
 	if (async_req_nomem(subreq, req)) {
 		return;
 	}
-
-	subreq->async.fn = rpc_write_np_done;
+	subreq->async.fn = rpc_write_done;
 	subreq->async.priv = req;
 }
 
-static void rpc_write_sock_done(struct async_req *subreq)
-{
-	struct async_req *req = talloc_get_type_abort(
-		subreq->async.priv, struct async_req);
-	NTSTATUS status;
-
-	status = sendall_recv(subreq);
-	TALLOC_FREE(subreq);
-	if (!NT_STATUS_IS_OK(status)) {
-		async_req_error(req, status);
-		return;
-	}
-
-	async_req_done(req);
-}
-
 static NTSTATUS rpc_write_recv(struct async_req *req)
 {
 	return async_req_simple_recv(req);
@@ -525,9 +416,11 @@ static struct async_req *get_complete_frag_send(TALLOC_CTX *mem_ctx,
 			status = NT_STATUS_NO_MEMORY;
 			goto post_status;
 		}
-		subreq = rpc_read_send(state, state->ev, state->cli,
-				       prs_data_p(state->pdu) + pdu_len,
-				       RPC_HEADER_LEN - pdu_len);
+		subreq = rpc_read_send(
+			state, state->ev,
+			state->cli->transport,
+			(uint8_t *)(prs_data_p(state->pdu) + pdu_len),
+			RPC_HEADER_LEN - pdu_len);
 		if (subreq == NULL) {
 			status = NT_STATUS_NO_MEMORY;
 			goto post_status;
@@ -550,8 +443,9 @@ static struct async_req *get_complete_frag_send(TALLOC_CTX *mem_ctx,
 			status = NT_STATUS_NO_MEMORY;
 			goto post_status;
 		}
-		subreq = rpc_read_send(state, state->ev, state->cli,
-				       prs_data_p(pdu) + pdu_len,
+		subreq = rpc_read_send(state, state->ev,
+				       state->cli->transport,
+				       (uint8_t *)(prs_data_p(pdu) + pdu_len),
 				       prhdr->frag_len - pdu_len);
 		if (subreq == NULL) {
 			status = NT_STATUS_NO_MEMORY;
@@ -602,9 +496,10 @@ static void get_complete_frag_got_header(struct async_req *subreq)
 	 * RPC_HEADER_LEN bytes into state->pdu.
 	 */
 
-	subreq = rpc_read_send(state, state->ev, state->cli,
-			       prs_data_p(state->pdu) + RPC_HEADER_LEN,
-			       state->prhdr->frag_len - RPC_HEADER_LEN);
+	subreq = rpc_read_send(


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