r1470: Get the smb_trans2 structure out of the rap_cli_call struct.

Initial attempt at RAP server infrastructure. Look at rap_server.c for the
dummy functions that are supposed to implement the core functionality.

ipc_rap.c contains all the data shuffling. _rap_shareenum and _rap_serverenum2
in ipc_rap.c are (I think) regular enough to be auto-generated.

I did not test all the corner cases yet, but nevertheless I would like some
comments on the general style.

Volker

P.S: samba-3 smbclient now doesn't freak out anymore, although the results are
not entirely correct :-)
(This used to be commit 08140cc1a838b4eaa23c897b280a46c95b7ef3e0)

4 files changed, 524 insertions, 1 deletions

diff --git a/source4/ntvfs/config.mk b/source4/ntvfs/config.mk
index 0feb380824..25dd51b487 100644
--- a/source4/ntvfs/config.mk
+++ b/source4/ntvfs/config.mk
@@ -32,7 +32,10 @@ INIT_OBJ_FILES = \
 # Start MODULE ntvfs_ipc
 [MODULE::ntvfs_ipc]
 INIT_OBJ_FILES = \
-		ntvfs/ipc/vfs_ipc.o
+		ntvfs/ipc/vfs_ipc.o \
+		ntvfs/ipc/ipc_rap.o \
+		ntvfs/ipc/rap_server.o
+
 # End MODULE ntvfs_ipc
 ################################################
 
diff --git a/source4/ntvfs/ipc/ipc_rap.c b/source4/ntvfs/ipc/ipc_rap.c
new file mode 100644
index 0000000000..d2cd0b38d5
--- /dev/null
+++ b/source4/ntvfs/ipc/ipc_rap.c
@@ -0,0 +1,463 @@
+/* 
+   Unix SMB/CIFS implementation.
+   RAP handlers
+
+   Copyright (C) Volker Lendecke 2004
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "includes.h"
+
+#define NERR_Success 0
+#define NERR_badpass 86
+#define NERR_notsupported 50
+
+struct rap_string_heap {
+	TALLOC_CTX *mem_ctx;
+	int offset;
+	int num_strings;
+	const char **strings;
+};
+
+struct rap_heap_save {
+	int offset, num_strings;
+};
+
+static void rap_heap_save(struct rap_string_heap *heap,
+			  struct rap_heap_save *save)
+{
+	save->offset = heap->offset;
+	save->num_strings = heap->num_strings;
+}
+
+static void rap_heap_restore(struct rap_string_heap *heap,
+			     struct rap_heap_save *save)
+{
+	heap->offset = save->offset;
+	heap->num_strings = save->num_strings;
+}
+
+struct rap_call {
+	TALLOC_CTX *mem_ctx;
+	uint16 callno;
+	const char *paramdesc;
+	const char *datadesc;
+
+	uint16 status;
+	uint16 convert;
+
+	uint16 rcv_paramlen, rcv_datalen;
+
+	struct ndr_push *ndr_push_param;
+	struct ndr_push *ndr_push_data;
+	struct rap_string_heap *heap;
+
+	struct ndr_pull *ndr_pull_param;
+	struct ndr_pull *ndr_pull_data;
+};
+
+#define RAPNDR_FLAGS (LIBNDR_FLAG_NOALIGN|LIBNDR_FLAG_STR_ASCII|LIBNDR_FLAG_STR_NULLTERM);
+
+static struct rap_call *new_rap_srv_call(TALLOC_CTX *mem_ctx,
+					 struct smb_trans2 *trans)
+{
+	struct rap_call *call;
+
+	call = talloc_p(mem_ctx, struct rap_call);
+
+	if (call == NULL)
+		return NULL;
+
+	ZERO_STRUCTP(call);
+
+	call->mem_ctx = mem_ctx;
+
+	call->ndr_pull_param = ndr_pull_init_blob(&trans->in.params, mem_ctx);
+	call->ndr_pull_param->flags = RAPNDR_FLAGS;
+
+	call->ndr_pull_data = ndr_pull_init_blob(&trans->in.data, mem_ctx);
+	call->ndr_pull_data->flags = RAPNDR_FLAGS;
+
+	call->heap = talloc_p(mem_ctx, struct rap_string_heap);
+
+	if (call->heap == NULL)
+		return NULL;
+
+	ZERO_STRUCTP(call->heap);
+
+	call->heap->mem_ctx = mem_ctx;
+
+	return call;
+}
+
+static NTSTATUS rap_srv_pull_word(struct rap_call *call, uint16 *result)
+{
+	if (*call->paramdesc++ != 'W')
+		return NT_STATUS_INVALID_PARAMETER;
+
+	return ndr_pull_uint16(call->ndr_pull_param, result);
+}
+
+static NTSTATUS rap_srv_pull_dword(struct rap_call *call, uint32 *result)
+{
+	if (*call->paramdesc++ != 'D')
+		return NT_STATUS_INVALID_PARAMETER;
+
+	return ndr_pull_uint32(call->ndr_pull_param, result);
+}
+
+static NTSTATUS rap_srv_pull_string(struct rap_call *call, const char **result)
+{
+	char paramdesc = *call->paramdesc++;
+
+	if (paramdesc == 'O') {
+		*result = NULL;
+		return NT_STATUS_OK;
+	}
+
+	if (paramdesc != 'z')
+		return NT_STATUS_INVALID_PARAMETER;
+
+	return ndr_pull_string(call->ndr_pull_param, NDR_SCALARS, result);
+}
+
+static NTSTATUS rap_srv_pull_bufsize(struct rap_call *call, uint16 *bufsize)
+{
+	NTSTATUS result;
+
+	if ( (*call->paramdesc++ != 'r') || (*call->paramdesc++ != 'L') )
+		return NT_STATUS_INVALID_PARAMETER;
+
+	result = ndr_pull_uint16(call->ndr_pull_param, bufsize);
+
+	if (!NT_STATUS_IS_OK(result))
+		return result;
+
+	call->heap->offset = *bufsize;
+
+	return NT_STATUS_OK;
+}
+
+static NTSTATUS rap_srv_pull_expect_multiple(struct rap_call *call)
+{
+	if ( (*call->paramdesc++ != 'e') || (*call->paramdesc++ != 'h') )
+		return NT_STATUS_INVALID_PARAMETER;
+
+	return NT_STATUS_OK;
+}
+
+static NTSTATUS rap_push_string(struct ndr_push *data_push,
+				struct rap_string_heap *heap,
+				const char *str)
+{
+	size_t space;
+
+	if (str == NULL)
+		str = "";
+
+	space = strlen(str)+1;
+
+	if (heap->offset < space)
+		return NT_STATUS_BUFFER_TOO_SMALL;
+
+	heap->offset -= space;
+
+	NDR_CHECK(ndr_push_uint16(data_push, heap->offset));
+	NDR_CHECK(ndr_push_uint16(data_push, 0));
+
+	heap->strings = talloc_realloc(heap->mem_ctx, heap->strings,
+				       sizeof(*heap->strings) *
+				       (heap->num_strings + 1));
+
+	if (heap->strings == NULL)
+		return NT_STATUS_NO_MEMORY;
+
+	heap->strings[heap->num_strings] = str;
+	heap->num_strings += 1;
+
+	return NT_STATUS_OK;
+}
+
+#define NDR_OK(call) do { result = call; \
+			     if (NT_STATUS_EQUAL(result, NT_STATUS_BUFFER_TOO_SMALL)) \
+				goto buffer_overflow; \
+                             if (!NT_STATUS_IS_OK(result)) \
+				goto done; \
+                        } while (0)
+
+static NTSTATUS _rap_netshareenum(struct smbsrv_request *req,
+				  struct rap_call *call)
+{
+	struct rap_NetShareEnum r;
+	NTSTATUS result;
+
+	NDR_OK(rap_srv_pull_word(call, &r.in.level));
+	NDR_OK(rap_srv_pull_bufsize(call, &r.in.bufsize));
+	NDR_OK(rap_srv_pull_expect_multiple(call));
+
+	switch(r.in.level) {
+	case 0:
+		if (strcmp(call->datadesc, "B13") != 0)
+			return NT_STATUS_INVALID_PARAMETER;
+		break;
+	case 1:
+		if (strcmp(call->datadesc, "B13BWz") != 0)
+			return NT_STATUS_INVALID_PARAMETER;
+		break;
+	default:
+		return NT_STATUS_INVALID_PARAMETER;
+		break;
+	}
+
+	result = rap_netshareenum(req, &r);
+
+	if (!NT_STATUS_IS_OK(result))
+		return result;
+
+	for (r.out.count = 0; r.out.count < r.out.available; r.out.count++) {
+
+		int i = r.out.count;
+		struct ndr_push_save data_save;
+		struct rap_heap_save heap_save;
+
+		ndr_push_save(call->ndr_push_data, &data_save);
+		rap_heap_save(call->heap, &heap_save);
+
+		switch(r.in.level) {
+		case 0:
+			NDR_OK(ndr_push_bytes(call->ndr_push_data,
+					      r.out.info[i].info0.name,
+					      sizeof(r.out.info[i].info0.name)));
+			break;
+		case 1:
+			NDR_OK(ndr_push_bytes(call->ndr_push_data,
+					      r.out.info[i].info1.name,
+					      sizeof(r.out.info[i].info1.name)));
+			NDR_OK(ndr_push_uint8(call->ndr_push_data,
+					      r.out.info[i].info1.pad));
+			NDR_OK(ndr_push_uint16(call->ndr_push_data,
+					       r.out.info[i].info1.type));
+
+			NDR_OK(rap_push_string(call->ndr_push_data,
+					       call->heap,
+					       r.out.info[i].info1.comment));
+
+			break;
+		}
+
+		if (call->ndr_push_data->offset > call->heap->offset) {
+
+	buffer_overflow:
+
+			ndr_push_restore(call->ndr_push_data, &data_save);
+			rap_heap_restore(call->heap, &heap_save);
+			break;
+		}
+	}
+
+	call->status = r.out.status;
+
+	NDR_CHECK(ndr_push_uint16(call->ndr_push_param, r.out.count));
+	NDR_CHECK(ndr_push_uint16(call->ndr_push_param, r.out.available));
+
+	result = NT_STATUS_OK;
+
+ done:
+	return result;
+}
+
+static NTSTATUS _rap_netserverenum2(struct smbsrv_request *req,
+				    struct rap_call *call)
+{
+	struct rap_NetServerEnum2 r;
+	NTSTATUS result;
+
+	NDR_OK(rap_srv_pull_word(call, &r.in.level));
+	NDR_OK(rap_srv_pull_bufsize(call, &r.in.bufsize));
+	NDR_OK(rap_srv_pull_expect_multiple(call));
+	NDR_OK(rap_srv_pull_dword(call, &r.in.servertype));
+	NDR_OK(rap_srv_pull_string(call, &r.in.domain));
+
+	switch(r.in.level) {
+	case 0:
+		if (strcmp(call->datadesc, "B16") != 0)
+			return NT_STATUS_INVALID_PARAMETER;
+		break;
+	case 1:
+		if (strcmp(call->datadesc, "B16BBDz") != 0)
+			return NT_STATUS_INVALID_PARAMETER;
+		break;
+	default:
+		return NT_STATUS_INVALID_PARAMETER;
+		break;
+	}
+
+	result = rap_netserverenum2(req, &r);
+
+	if (!NT_STATUS_IS_OK(result))
+		return result;
+
+	for (r.out.count = 0; r.out.count < r.out.available; r.out.count++) {
+
+		int i = r.out.count;
+		struct ndr_push_save data_save;
+		struct rap_heap_save heap_save;
+
+		ndr_push_save(call->ndr_push_data, &data_save);
+		rap_heap_save(call->heap, &heap_save);
+
+		switch(r.in.level) {
+		case 0:
+			NDR_OK(ndr_push_bytes(call->ndr_push_data,
+					      r.out.info[i].info0.name,
+					      sizeof(r.out.info[i].info0.name)));
+			break;
+		case 1:
+			NDR_OK(ndr_push_bytes(call->ndr_push_data,
+					      r.out.info[i].info1.name,
+					      sizeof(r.out.info[i].info1.name)));
+			NDR_OK(ndr_push_uint8(call->ndr_push_data,
+					      r.out.info[i].info1.version_major));
+			NDR_OK(ndr_push_uint8(call->ndr_push_data,
+					      r.out.info[i].info1.version_minor));
+			NDR_OK(ndr_push_uint32(call->ndr_push_data,
+					       r.out.info[i].info1.servertype));
+
+			NDR_OK(rap_push_string(call->ndr_push_data,
+					       call->heap,
+					       r.out.info[i].info1.comment));
+
+			break;
+		}
+
+		if (call->ndr_push_data->offset > call->heap->offset) {
+
+	buffer_overflow:
+
+			ndr_push_restore(call->ndr_push_data, &data_save);
+			rap_heap_restore(call->heap, &heap_save);
+			break;
+		}
+	}
+
+	call->status = r.out.status;
+
+	NDR_CHECK(ndr_push_uint16(call->ndr_push_param, r.out.count));
+	NDR_CHECK(ndr_push_uint16(call->ndr_push_param, r.out.available));
+
+	result = NT_STATUS_OK;
+
+ done:
+	return result;
+}
+
+static NTSTATUS api_Unsupported(struct smbsrv_request *req,
+				struct rap_call *call)
+{
+	call->status = NERR_notsupported;
+	call->convert = 0;
+	return NT_STATUS_OK;
+}
+
+#define RAP_NetShareEnum 0
+#define RAP_NetServerEnum2 104
+
+static const struct
+{
+	const char *name;
+	int id;
+	NTSTATUS (*fn)(struct smbsrv_request *req, struct rap_call *call);
+} api_commands[] = {
+	{"NetShareEnum", RAP_NetShareEnum, _rap_netshareenum },
+	{"NetServerEnum2", RAP_NetServerEnum2, _rap_netserverenum2 },
+	{NULL, -1, api_Unsupported}
+};
+
+NTSTATUS ipc_rap_call(struct smbsrv_request *req, struct smb_trans2 *trans)
+{
+	int i;
+	NTSTATUS result;
+	struct rap_call *call;
+	DATA_BLOB result_param, result_data;
+	struct ndr_push *final_param;
+	struct ndr_push *final_data;
+
+	call = new_rap_srv_call(req->mem_ctx, trans);
+
+	if (call == NULL)
+		return NT_STATUS_NO_MEMORY;
+
+	NDR_CHECK(ndr_pull_uint16(call->ndr_pull_param, &call->callno));
+	NDR_CHECK(ndr_pull_string(call->ndr_pull_param, NDR_SCALARS,
+				  &call->paramdesc));
+	NDR_CHECK(ndr_pull_string(call->ndr_pull_param, NDR_SCALARS,
+				  &call->datadesc));
+
+	call->ndr_push_param = ndr_push_init_ctx(req->mem_ctx);
+	call->ndr_push_data = ndr_push_init_ctx(req->mem_ctx);
+
+	if ((call->ndr_push_param == NULL) || (call->ndr_push_data == NULL))
+		return NT_STATUS_NO_MEMORY;
+
+	call->ndr_push_param->flags = RAPNDR_FLAGS;
+	call->ndr_push_data->flags = RAPNDR_FLAGS;
+
+	result = NT_STATUS_NOT_IMPLEMENTED;
+
+	for (i=0; api_commands[i].name != NULL; i++) {
+		if (api_commands[i].id == call->callno) {
+			DEBUG(5, ("Running RAP call %s\n",
+				  api_commands[i].name));
+			result = api_commands[i].fn(req, call);
+			break;
+		}
+	}
+
+	if (!NT_STATUS_IS_OK(result))
+		return result;
+
+	result_param = ndr_push_blob(call->ndr_push_param);
+	result_data = ndr_push_blob(call->ndr_push_data);
+
+	final_param = ndr_push_init_ctx(req->mem_ctx);
+	final_data = ndr_push_init_ctx(req->mem_ctx);
+
+	if ((final_param == NULL) || (final_data == NULL))
+		return NT_STATUS_NO_MEMORY;
+
+	final_param->flags = RAPNDR_FLAGS;
+	final_data->flags = RAPNDR_FLAGS;
+
+	NDR_CHECK(ndr_push_uint16(final_param, call->status));
+	NDR_CHECK(ndr_push_uint16(final_param,
+				  call->heap->offset - result_data.length));
+	NDR_CHECK(ndr_push_bytes(final_param, result_param.data,
+				 result_param.length));
+
+	NDR_CHECK(ndr_push_bytes(final_data, result_data.data,
+				 result_data.length));
+
+	for (i=call->heap->num_strings-1; i>=0; i--)
+		NDR_CHECK(ndr_push_string(final_data, NDR_SCALARS,
+					  call->heap->strings[i]));
+
+	trans->out.setup_count = 0;
+	trans->out.setup = NULL;
+	trans->out.params = ndr_push_blob(final_param);
+	trans->out.data = ndr_push_blob(final_data);
+
+	return result;
+}
diff --git a/source4/ntvfs/ipc/rap_server.c b/source4/ntvfs/ipc/rap_server.c
new file mode 100644
index 0000000000..4a7b2dd91b
--- /dev/null
+++ b/source4/ntvfs/ipc/rap_server.c
@@ -0,0 +1,54 @@
+/* 
+   Unix SMB/CIFS implementation.
+   RAP handlers
+
+   Copyright (C) Volker Lendecke 2004
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "includes.h"
+
+/* At this moment these are just dummy functions, but you might get the
+ * idea. */
+
+NTSTATUS rap_netshareenum(struct smbsrv_request *req,
+			  struct rap_NetShareEnum *r)
+{
+	r->out.status = 0;
+	r->out.available = 2;
+	r->out.info = talloc_array_p(req->mem_ctx,
+				     union rap_shareenum_info, 2);
+
+	strncpy(r->out.info[0].info1.name, "C$", 12);
+	r->out.info[0].info1.pad = 0;
+	r->out.info[0].info1.type = 0;
+	r->out.info[0].info1.comment = talloc_strdup(req->mem_ctx, "Bla");
+	
+	strncpy(r->out.info[1].info1.name, "IPC$", 12);
+	r->out.info[1].info1.pad = 0;
+	r->out.info[1].info1.type = 1;
+	r->out.info[1].info1.comment = talloc_strdup(req->mem_ctx, "Blub");
+	
+	return NT_STATUS_OK;
+}
+
+NTSTATUS rap_netserverenum2(struct smbsrv_request *req,
+				   struct rap_NetServerEnum2 *r)
+{
+	r->out.status = 0;
+	r->out.available = 0;
+	return NT_STATUS_OK;
+}
diff --git a/source4/ntvfs/ipc/vfs_ipc.c b/source4/ntvfs/ipc/vfs_ipc.c
index f6a0015f1d..73b3de314d 100644
--- a/source4/ntvfs/ipc/vfs_ipc.c
+++ b/source4/ntvfs/ipc/vfs_ipc.c
@@ -667,6 +667,9 @@ static NTSTATUS ipc_trans(struct smbsrv_request *req, struct smb_trans2 *trans)
 {
 	NTSTATUS status;
 
+	if (strequal(trans->in.trans_name, "\\PIPE\\LANMAN"))
+		return ipc_rap_call(req, trans);
+
        	if (trans->in.setup_count != 2) {
 		return NT_STATUS_INVALID_PARAMETER;
 	}