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-rw-r--r--source4/libcli/raw/interfaces.h20
-rw-r--r--source4/libcli/smb2/create.c242
2 files changed, 240 insertions, 22 deletions
diff --git a/source4/libcli/raw/interfaces.h b/source4/libcli/raw/interfaces.h
index 17c85138ac..d170006d3b 100644
--- a/source4/libcli/raw/interfaces.h
+++ b/source4/libcli/raw/interfaces.h
@@ -1586,9 +1586,17 @@ union smb_open {
/* dynamic body */
const char *fname;
- /* optional list of extended attributes */
+ /* now some optional parameters - encoded as tagged blobs */
struct smb_ea_list eas;
-
+ uint64_t alloc_size;
+ struct security_descriptor *sec_desc;
+ bool durable_open;
+ struct smb2_handle *durable_handle;
+ bool query_maximal_access;
+ NTTIME timewarp;
+ bool query_on_disk_id;
+
+ /* and any additional blobs the caller wants */
struct smb2_create_blobs {
uint32_t num_blobs;
struct smb2_create_blob {
@@ -1617,8 +1625,12 @@ union smb_open {
/* uint32_t blob_ofs; */
/* uint32_t blob_size; */
- /* dynamic body */
- DATA_BLOB blob;
+ /* optional return values matching tagged values in the call */
+ uint32_t maximal_access;
+ uint8_t on_disk_id[32];
+
+ /* tagged blobs in the reply */
+ struct smb2_create_blobs blobs;
} out;
} smb2;
};
diff --git a/source4/libcli/smb2/create.c b/source4/libcli/smb2/create.c
index 1901cb4977..bff0a1587d 100644
--- a/source4/libcli/smb2/create.c
+++ b/source4/libcli/smb2/create.c
@@ -24,6 +24,75 @@
#include "libcli/raw/raw_proto.h"
#include "libcli/smb2/smb2.h"
#include "libcli/smb2/smb2_calls.h"
+#include "librpc/gen_ndr/ndr_security.h"
+
+
+/*
+ parse a set of SMB2 create blobs
+*/
+NTSTATUS smb2_create_blob_parse(TALLOC_CTX *mem_ctx, const DATA_BLOB buffer,
+ struct smb2_create_blobs *blobs)
+{
+ const uint8_t *data = buffer.data;
+ uint32_t remaining = buffer.length;
+
+ while (remaining > 0) {
+ uint32_t next;
+ uint32_t name_offset, name_length;
+ uint32_t reserved, data_offset;
+ uint32_t data_length;
+ char *tag;
+ DATA_BLOB b;
+ NTSTATUS status;
+
+ if (remaining < 16) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+ next = IVAL(data, 0);
+ name_offset = SVAL(data, 4);
+ name_length = SVAL(data, 6);
+ reserved = SVAL(data, 8);
+ data_offset = SVAL(data, 10);
+ data_length = IVAL(data, 12);
+
+ if ((next & 0x7) != 0 ||
+ next > remaining ||
+ name_offset < 16 ||
+ name_offset > remaining ||
+ name_length != 4 || /* windows enforces this */
+ name_offset + name_length > remaining ||
+ data_offset < name_offset + name_length ||
+ data_offset > remaining ||
+ data_offset + (uint64_t)data_length > remaining) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ tag = talloc_strndup(mem_ctx, (const char *)data + name_offset, name_length);
+ if (tag == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ b = data_blob_const(data+data_offset, data_length);
+ status = smb2_create_blob_add(mem_ctx, blobs, tag, b);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+
+ talloc_free(tag);
+
+ if (next == 0) break;
+
+ remaining -= next;
+ data += next;
+
+ if (remaining < 16) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+ }
+
+ return NT_STATUS_OK;
+}
+
/*
add a blob to a smb2_create attribute blob
@@ -57,6 +126,35 @@ static NTSTATUS smb2_create_blob_push_one(TALLOC_CTX *mem_ctx, DATA_BLOB *buffer
return NT_STATUS_OK;
}
+
+/*
+ create a buffer of a set of create blobs
+*/
+NTSTATUS smb2_create_blob_push(TALLOC_CTX *mem_ctx, DATA_BLOB *buffer,
+ const struct smb2_create_blobs blobs)
+{
+ int i;
+ NTSTATUS status;
+
+ *buffer = data_blob(NULL, 0);
+ for (i=0; i < blobs.num_blobs; i++) {
+ bool last = false;
+ const struct smb2_create_blob *c;
+
+ if ((i + 1) == blobs.num_blobs) {
+ last = true;
+ }
+
+ c = &blobs.blobs[i];
+ status = smb2_create_blob_push_one(mem_ctx, buffer, c, last);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+ }
+ return NT_STATUS_OK;
+}
+
+
NTSTATUS smb2_create_blob_add(TALLOC_CTX *mem_ctx, struct smb2_create_blobs *b,
const char *tag, DATA_BLOB data)
{
@@ -92,9 +190,11 @@ struct smb2_request *smb2_create_send(struct smb2_tree *tree, struct smb2_create
{
struct smb2_request *req;
NTSTATUS status;
- DATA_BLOB blob = data_blob(NULL, 0);
- uint32_t i;
- struct smb2_create_blobs blobs = io->in.blobs;
+ DATA_BLOB blob;
+ struct smb2_create_blobs blobs;
+ int i;
+
+ ZERO_STRUCT(blobs);
req = smb2_request_init_tree(tree, SMB2_OP_CREATE, 0x38, true, 0);
if (req == NULL) return NULL;
@@ -116,6 +216,7 @@ struct smb2_request *smb2_create_send(struct smb2_tree *tree, struct smb2_create
return NULL;
}
+ /* now add all the optional blobs */
if (io->in.eas.num_eas != 0) {
DATA_BLOB b = data_blob_talloc(req, NULL,
ea_list_size_chained(io->in.eas.num_eas, io->in.eas.eas, 4));
@@ -131,36 +232,112 @@ struct smb2_request *smb2_create_send(struct smb2_tree *tree, struct smb2_create
/* an empty MxAc tag seems to be used to ask the server to
return the maximum access mask allowed on the file */
- status = smb2_create_blob_add(req, &blobs,
- SMB2_CREATE_TAG_MXAC, data_blob(NULL, 0));
- if (!NT_STATUS_IS_OK(status)) {
- talloc_free(req);
- return NULL;
+ if (io->in.query_maximal_access) {
+ /* TODO: MS-SMB2 2.2.13.2.5 says this can contain a timestamp? What to do
+ with that if it doesn't match? */
+ status = smb2_create_blob_add(req, &blobs,
+ SMB2_CREATE_TAG_MXAC, data_blob(NULL, 0));
+ if (!NT_STATUS_IS_OK(status)) {
+ talloc_free(req);
+ return NULL;
+ }
}
- for (i=0; i < blobs.num_blobs; i++) {
- bool last = false;
- const struct smb2_create_blob *c;
+ if (io->in.alloc_size != 0) {
+ uint8_t data[8];
+ SBVAL(data, 0, io->in.alloc_size);
+ status = smb2_create_blob_add(req, &blobs,
+ SMB2_CREATE_TAG_ALSI, data_blob_const(data, 8));
+ if (!NT_STATUS_IS_OK(status)) {
+ talloc_free(req);
+ return NULL;
+ }
+ }
- if ((i + 1) == blobs.num_blobs) {
- last = true;
+ if (io->in.durable_open) {
+ status = smb2_create_blob_add(req, &blobs,
+ SMB2_CREATE_TAG_DHNQ, data_blob_talloc_zero(req, 16));
+ if (!NT_STATUS_IS_OK(status)) {
+ talloc_free(req);
+ return NULL;
}
+ }
- c = &blobs.blobs[i];
- status = smb2_create_blob_push_one(req, &blob,
- c, last);
+ if (io->in.durable_handle) {
+ uint8_t data[16];
+ smb2_push_handle(data, io->in.durable_handle);
+ status = smb2_create_blob_add(req, &blobs,
+ SMB2_CREATE_TAG_DHNC, data_blob_const(data, 16));
+ if (!NT_STATUS_IS_OK(status)) {
+ talloc_free(req);
+ return NULL;
+ }
+ }
+
+ if (io->in.timewarp) {
+ uint8_t data[8];
+ SBVAL(data, 0, io->in.timewarp);
+ status = smb2_create_blob_add(req, &blobs,
+ SMB2_CREATE_TAG_TWRP, data_blob_const(data, 8));
+ if (!NT_STATUS_IS_OK(status)) {
+ talloc_free(req);
+ return NULL;
+ }
+ }
+
+ if (io->in.sec_desc) {
+ enum ndr_err_code ndr_err;
+ DATA_BLOB sd_blob;
+ ndr_err = ndr_push_struct_blob(&sd_blob, req, NULL,
+ io->in.sec_desc,
+ (ndr_push_flags_fn_t)ndr_push_security_descriptor);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ talloc_free(req);
+ return NULL;
+ }
+ status = smb2_create_blob_add(req, &blobs,
+ SMB2_CREATE_TAG_SECD, sd_blob);
+ if (!NT_STATUS_IS_OK(status)) {
+ talloc_free(req);
+ return NULL;
+ }
+ }
+
+ if (io->in.query_on_disk_id) {
+ status = smb2_create_blob_add(req, &blobs,
+ SMB2_CREATE_TAG_QFID, data_blob(NULL, 0));
if (!NT_STATUS_IS_OK(status)) {
talloc_free(req);
return NULL;
}
}
+ /* and any custom blobs */
+ for (i=0;i<io->in.blobs.num_blobs;i++) {
+ status = smb2_create_blob_add(req, &blobs,
+ io->in.blobs.blobs[i].tag,
+ io->in.blobs.blobs[i].data);
+ if (!NT_STATUS_IS_OK(status)) {
+ talloc_free(req);
+ return NULL;
+ }
+ }
+
+
+ status = smb2_create_blob_push(req, &blob, blobs);
+ if (!NT_STATUS_IS_OK(status)) {
+ talloc_free(req);
+ return NULL;
+ }
+
status = smb2_push_o32s32_blob(&req->out, 0x30, blob);
if (!NT_STATUS_IS_OK(status)) {
talloc_free(req);
return NULL;
}
+ data_blob_free(&blob);
+
smb2_transport_send(req);
return req;
@@ -173,6 +350,8 @@ struct smb2_request *smb2_create_send(struct smb2_tree *tree, struct smb2_create
NTSTATUS smb2_create_recv(struct smb2_request *req, TALLOC_CTX *mem_ctx, struct smb2_create *io)
{
NTSTATUS status;
+ DATA_BLOB blob;
+ int i;
if (!smb2_request_receive(req) ||
!smb2_request_is_ok(req)) {
@@ -180,7 +359,7 @@ NTSTATUS smb2_create_recv(struct smb2_request *req, TALLOC_CTX *mem_ctx, struct
}
SMB2_CHECK_PACKET_RECV(req, 0x58, true);
-
+ ZERO_STRUCT(io->out);
io->out.oplock_level = CVAL(req->in.body, 0x02);
io->out.reserved = CVAL(req->in.body, 0x03);
io->out.create_action = IVAL(req->in.body, 0x04);
@@ -193,12 +372,39 @@ NTSTATUS smb2_create_recv(struct smb2_request *req, TALLOC_CTX *mem_ctx, struct
io->out.file_attr = IVAL(req->in.body, 0x38);
io->out.reserved2 = IVAL(req->in.body, 0x3C);
smb2_pull_handle(req->in.body+0x40, &io->out.file.handle);
- status = smb2_pull_o32s32_blob(&req->in, mem_ctx, req->in.body+0x50, &io->out.blob);
+ status = smb2_pull_o32s32_blob(&req->in, mem_ctx, req->in.body+0x50, &blob);
if (!NT_STATUS_IS_OK(status)) {
smb2_request_destroy(req);
return status;
}
+ status = smb2_create_blob_parse(mem_ctx, blob, &io->out.blobs);
+ if (!NT_STATUS_IS_OK(status)) {
+ smb2_request_destroy(req);
+ return status;
+ }
+
+ /* pull out the parsed blobs */
+ for (i=0;i<io->out.blobs.num_blobs;i++) {
+ if (strcmp(io->out.blobs.blobs[i].tag, SMB2_CREATE_TAG_MXAC) == 0) {
+ /* why 8 bytes not 4?? */
+ if (io->out.blobs.blobs[i].data.length != 8) {
+ smb2_request_destroy(req);
+ return NT_STATUS_INVALID_NETWORK_RESPONSE;
+ }
+ io->out.maximal_access = IVAL(io->out.blobs.blobs[i].data.data, 0);
+ }
+ if (strcmp(io->out.blobs.blobs[i].tag, SMB2_CREATE_TAG_QFID) == 0) {
+ if (io->out.blobs.blobs[i].data.length != 32) {
+ smb2_request_destroy(req);
+ return NT_STATUS_INVALID_NETWORK_RESPONSE;
+ }
+ memcpy(io->out.on_disk_id, io->out.blobs.blobs[i].data.data, 32);
+ }
+ }
+
+ data_blob_free(&blob);
+
return smb2_request_destroy(req);
}
generated by cgit (git 2.34.1) at 2024-12-15 12:36:17 +0000