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Diffstat (limited to 'source4/libcli/smb2/create.c')
| -rw-r--r-- | source4/libcli/smb2/create.c | 446 |
1 files changed, 446 insertions, 0 deletions
diff --git a/source4/libcli/smb2/create.c b/source4/libcli/smb2/create.c new file mode 100644 index 0000000..c91b150 --- /dev/null +++ b/source4/libcli/smb2/create.c @@ -0,0 +1,446 @@ +/* + Unix SMB/CIFS implementation. + + SMB2 client tree handling + + Copyright (C) Andrew Tridgell 2005 + + 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 3 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, see <http://www.gnu.org/licenses/>. +*/ + +#include "includes.h" +#include "libcli/raw/libcliraw.h" +#include "libcli/raw/raw_proto.h" +#include "libcli/smb2/smb2.h" +#include "libcli/smb2/smb2_calls.h" +#include "librpc/gen_ndr/ndr_security.h" + +/* + send a create request +*/ +struct smb2_request *smb2_create_send(struct smb2_tree *tree, struct smb2_create *io) +{ + struct smb2_request *req; + NTSTATUS status; + 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; + + SCVAL(req->out.body, 0x02, io->in.security_flags); + SCVAL(req->out.body, 0x03, io->in.oplock_level); + SIVAL(req->out.body, 0x04, io->in.impersonation_level); + SBVAL(req->out.body, 0x08, io->in.create_flags); + SBVAL(req->out.body, 0x10, io->in.reserved); + SIVAL(req->out.body, 0x18, io->in.desired_access); + SIVAL(req->out.body, 0x1C, io->in.file_attributes); + SIVAL(req->out.body, 0x20, io->in.share_access); + SIVAL(req->out.body, 0x24, io->in.create_disposition); + SIVAL(req->out.body, 0x28, io->in.create_options); + + status = smb2_push_o16s16_string(&req->out, 0x2C, io->in.fname); + if (!NT_STATUS_IS_OK(status)) { + talloc_free(req); + 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)); + ea_put_list_chained(b.data, io->in.eas.num_eas, io->in.eas.eas, 4); + status = smb2_create_blob_add(req, &blobs, + SMB2_CREATE_TAG_EXTA, b); + if (!NT_STATUS_IS_OK(status)) { + talloc_free(req); + return NULL; + } + data_blob_free(&b); + } + + /* an empty MxAc tag seems to be used to ask the server to + return the maximum access mask allowed on the file */ + 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; + } + } + + 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 (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; + } + } + + if (io->in.durable_open_v2) { + uint8_t data[32]; + uint32_t flags = 0; + struct GUID_ndr_buf guid_buf = { .buf = {0}, }; + + SIVAL(data, 0, io->in.timeout); + if (io->in.persistent_open) { + flags = SMB2_DHANDLE_FLAG_PERSISTENT; + } + SIVAL(data, 4, flags); + SBVAL(data, 8, 0x0); /* reserved */ + status = GUID_to_ndr_buf(&io->in.create_guid, &guid_buf); + if (!NT_STATUS_IS_OK(status)) { + talloc_free(req); + return NULL; + } + memcpy(data+16, guid_buf.buf, sizeof(guid_buf.buf)); + + status = smb2_create_blob_add(req, &blobs, + SMB2_CREATE_TAG_DH2Q, + data_blob_const(data, 32)); + if (!NT_STATUS_IS_OK(status)) { + talloc_free(req); + return NULL; + } + } + + 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.durable_handle_v2) { + uint8_t data[36]; + struct GUID_ndr_buf guid_buf = { .buf = {0}, }; + uint32_t flags = 0; + + smb2_push_handle(data, io->in.durable_handle_v2); + status = GUID_to_ndr_buf(&io->in.create_guid, &guid_buf); + if (!NT_STATUS_IS_OK(status)) { + talloc_free(req); + return NULL; + } + memcpy(data+16, guid_buf.buf, sizeof(guid_buf.buf)); + if (io->in.persistent_open) { + flags = SMB2_DHANDLE_FLAG_PERSISTENT; + } + SIVAL(data, 32, flags); + + status = smb2_create_blob_add(req, &blobs, + SMB2_CREATE_TAG_DH2C, + data_blob_const(data, 36)); + 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, 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; + } + } + + if (io->in.lease_request) { + uint8_t data[32]; + + if (!smb2_lease_push(io->in.lease_request, data, + sizeof(data))) { + TALLOC_FREE(req); + return NULL; + } + + status = smb2_create_blob_add( + req, &blobs, SMB2_CREATE_TAG_RQLS, + data_blob_const(data, sizeof(data))); + if (!NT_STATUS_IS_OK(status)) { + talloc_free(req); + return NULL; + } + } + + if (io->in.lease_request_v2) { + uint8_t data[52]; + + if (!smb2_lease_push(io->in.lease_request_v2, data, + sizeof(data))) { + TALLOC_FREE(req); + return NULL; + } + + status = smb2_create_blob_add( + req, &blobs, SMB2_CREATE_TAG_RQLS, + data_blob_const(data, sizeof(data))); + if (!NT_STATUS_IS_OK(status)) { + talloc_free(req); + return NULL; + } + } + + if (io->in.app_instance_id) { + uint8_t data[20]; + struct GUID_ndr_buf guid_buf = { .buf = {0}, }; + + SSVAL(data, 0, 20); /* structure size */ + SSVAL(data, 2, 0); /* reserved */ + + status = GUID_to_ndr_buf(io->in.app_instance_id, &guid_buf); + if (!NT_STATUS_IS_OK(status)) { + talloc_free(req); + return NULL; + } + memcpy(data+4, guid_buf.buf, sizeof(guid_buf.buf)); + + status = smb2_create_blob_add(req, &blobs, + SMB2_CREATE_TAG_APP_INSTANCE_ID, + data_blob_const(data, 20)); + 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; + } + + if (((io->in.fname == NULL) || (strlen(io->in.fname) == 0)) && + (blob.length == 0)) { + struct smb2_request_buffer *buf = &req->out; + + status = smb2_grow_buffer(buf, 1); + if (!NT_STATUS_IS_OK(status)) { + talloc_free(req); + return NULL; + } + buf->dynamic[0] = 0; + buf->dynamic += 1; + buf->body_size += 1; + buf->size += 1; + } + + data_blob_free(&blob); + + smb2_transport_send(req); + + return req; +} + + +/* + recv a create reply +*/ +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)) { + return smb2_request_destroy(req); + } + + 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); + io->out.create_time = smbcli_pull_nttime(req->in.body, 0x08); + io->out.access_time = smbcli_pull_nttime(req->in.body, 0x10); + io->out.write_time = smbcli_pull_nttime(req->in.body, 0x18); + io->out.change_time = smbcli_pull_nttime(req->in.body, 0x20); + io->out.alloc_size = BVAL(req->in.body, 0x28); + io->out.size = BVAL(req->in.body, 0x30); + 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, &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) { + if (io->out.blobs.blobs[i].data.length != 8) { + smb2_request_destroy(req); + return NT_STATUS_INVALID_NETWORK_RESPONSE; + } + io->out.maximal_access_status = + IVAL(io->out.blobs.blobs[i].data.data, 0); + io->out.maximal_access = IVAL(io->out.blobs.blobs[i].data.data, 4); + } + 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); + } + if (strcmp(io->out.blobs.blobs[i].tag, SMB2_CREATE_TAG_RQLS) == 0) { + struct smb2_lease *ls = NULL; + uint8_t *data; + + ZERO_STRUCT(io->out.lease_response); + ZERO_STRUCT(io->out.lease_response_v2); + + switch (io->out.blobs.blobs[i].data.length) { + case 32: + ls = &io->out.lease_response; + ls->lease_version = 1; + break; + case 52: + ls = &io->out.lease_response_v2; + ls->lease_version = 2; + break; + default: + smb2_request_destroy(req); + return NT_STATUS_INVALID_NETWORK_RESPONSE; + } + + data = io->out.blobs.blobs[i].data.data; + memcpy(&ls->lease_key, data, 16); + ls->lease_state = IVAL(data, 16); + ls->lease_flags = IVAL(data, 20); + ls->lease_duration = BVAL(data, 24); + + if (io->out.blobs.blobs[i].data.length == 52) { + memcpy(&ls->parent_lease_key, data+32, 16); + ls->lease_epoch = SVAL(data, 48); + } + } + if (strcmp(io->out.blobs.blobs[i].tag, SMB2_CREATE_TAG_DHNQ) == 0) { + if (io->out.blobs.blobs[i].data.length != 8) { + smb2_request_destroy(req); + return NT_STATUS_INVALID_NETWORK_RESPONSE; + } + io->out.durable_open = true; + } + if (strcmp(io->out.blobs.blobs[i].tag, SMB2_CREATE_TAG_DH2Q) == 0) { + uint32_t flags; + uint8_t *data; + + if (io->out.blobs.blobs[i].data.length != 8) { + smb2_request_destroy(req); + return NT_STATUS_INVALID_NETWORK_RESPONSE; + } + + io->out.durable_open = false; + io->out.durable_open_v2 = true; + + data = io->out.blobs.blobs[i].data.data; + io->out.timeout = IVAL(data, 0); + flags = IVAL(data, 4); + if ((flags & SMB2_DHANDLE_FLAG_PERSISTENT) != 0) { + io->out.persistent_open = true; + } + } + } + + data_blob_free(&blob); + + return smb2_request_destroy(req); +} + +/* + sync create request +*/ +NTSTATUS smb2_create(struct smb2_tree *tree, TALLOC_CTX *mem_ctx, struct smb2_create *io) +{ + struct smb2_request *req = smb2_create_send(tree, io); + return smb2_create_recv(req, mem_ctx, io); +} |