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Diffstat (limited to '')
| -rw-r--r-- | libcli/smb/smb1cli_create.c | 296 |
1 files changed, 296 insertions, 0 deletions
diff --git a/libcli/smb/smb1cli_create.c b/libcli/smb/smb1cli_create.c new file mode 100644 index 0000000..fc1e16b --- /dev/null +++ b/libcli/smb/smb1cli_create.c @@ -0,0 +1,296 @@ +/* + Unix SMB/CIFS implementation. + + Copyright (C) Gregor Beck 2013 + Copyright (C) Stefan Metzmacher 2013 + + 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 "system/network.h" +#include "lib/util/tevent_ntstatus.h" +#include "smb_common.h" +#include "smbXcli_base.h" + +struct smb1cli_ntcreatex_state { + uint16_t vwv[24]; + uint16_t fnum; +}; + +static void smb1cli_ntcreatex_done(struct tevent_req *subreq); + +/** + * Send an asynchronous SMB_COM_NT_CREATE_ANDX request. + * <a href="http://msdn.microsoft.com/en-us/library/ee442175.aspx">MS-CIFS 2.2.4.64.1</a> + * @see smb1cli_ntcreatex_recv(), smb1cli_ntcreatex() + * + * @param[in] mem_ctx The memory context for the result. + * @param[in] ev The event context to work on. + * @param[in] conn The smb connection. + * @param[in] timeout_msec If positive a timeout for the request. + * @param[in] pid The process identifier + * @param[in] tcon The smb tree connect. + * @param[in] session The smb session. + * @param[in] fname The name of the file or directory to be opened or created. + * @param[in] CreatFlags + * @param[in] RootDirectoryFid The file id of an opened root directory fname is based on. 0 means root of the share. + * @param[in] DesiredAccess A field of flags that indicate standard, specific, and generic access rights to be requested. + * @param[in] AllocationSize Number of Bytes to allocate if the file is to be created or overwritten. + * @param[in] FileAttributes <a href="http://msdn.microsoft.com/en-us/library/ee878573.aspx">Extended file attributes</a> + * @param[in] ShareAccess A field that specifies how the file should be shared with other processes. + * @param[in] CreateDisposition A value that represents the action to take if the file already exists or if the file is a new file and does not already exist. + * @param[in] CreateOptions A field of flag options to use if creating a file or directory. + * @param[in] ImpersonationLevel + * @param[in] SecurityFlags + * + * @return a tevent_req or NULL + */ +struct tevent_req *smb1cli_ntcreatex_send(TALLOC_CTX *mem_ctx, + struct tevent_context *ev, + struct smbXcli_conn *conn, + uint32_t timeout_msec, + uint32_t pid, + struct smbXcli_tcon *tcon, + struct smbXcli_session *session, + const char *fname, + uint32_t CreatFlags, + uint32_t RootDirectoryFid, + uint32_t DesiredAccess, + uint64_t AllocationSize, + uint32_t FileAttributes, + uint32_t ShareAccess, + uint32_t CreateDisposition, + uint32_t CreateOptions, + uint32_t ImpersonationLevel, + uint8_t SecurityFlags) +{ + struct tevent_req *req, *subreq; + struct smb1cli_ntcreatex_state *state; + uint8_t *bytes; + size_t converted_len; + + req = tevent_req_create(mem_ctx, &state, struct smb1cli_ntcreatex_state); + if (req == NULL) { + return NULL; + } + + SCVAL(state->vwv+0, 0, 0xFF); + SCVAL(state->vwv+0, 1, 0); + SSVAL(state->vwv+1, 0, 0); + SCVAL(state->vwv+2, 0, 0); + SIVAL(state->vwv+3, 1, CreatFlags); + SIVAL(state->vwv+5, 1, RootDirectoryFid); + SIVAL(state->vwv+7, 1, DesiredAccess); + SBVAL(state->vwv+9, 1, AllocationSize); + SIVAL(state->vwv+13, 1, FileAttributes); + SIVAL(state->vwv+15, 1, ShareAccess); + SIVAL(state->vwv+17, 1, CreateDisposition); + SIVAL(state->vwv+19, 1, CreateOptions); + SIVAL(state->vwv+21, 1, ImpersonationLevel); + SCVAL(state->vwv+23, 1, SecurityFlags); + + bytes = talloc_array(state, uint8_t, 0); + bytes = smb_bytes_push_str(bytes, smbXcli_conn_use_unicode(conn), + fname, strlen(fname)+1, + &converted_len); + + /* sigh. this copes with broken netapp filer behaviour */ + bytes = smb_bytes_push_str(bytes, smbXcli_conn_use_unicode(conn), "", 1, NULL); + + if (tevent_req_nomem(bytes, req)) { + return tevent_req_post(req, ev); + } + + SSVAL(state->vwv+2, 1, converted_len); + + subreq = smb1cli_req_send(state, ev, conn, SMBntcreateX, + 0, 0, /* *_flags */ + 0, 0, /* *_flags2 */ + timeout_msec, pid, tcon, session, + ARRAY_SIZE(state->vwv), state->vwv, + talloc_get_size(bytes), bytes); + if (tevent_req_nomem(subreq, req)) { + return tevent_req_post(req, ev); + } + tevent_req_set_callback(subreq, smb1cli_ntcreatex_done, req); + + return req; +} + +static void smb1cli_ntcreatex_done(struct tevent_req *subreq) +{ + struct tevent_req *req = tevent_req_callback_data( + subreq, struct tevent_req); + struct smb1cli_ntcreatex_state *state = tevent_req_data( + req, struct smb1cli_ntcreatex_state); + struct iovec *recv_iov = NULL; + uint8_t wct; + uint16_t *vwv; + NTSTATUS status; + static const struct smb1cli_req_expected_response expected[] = { + { + .status = NT_STATUS_OK, + .wct = 0x22 + }, + { + /* + * This is the broken version see from + * [MS-SMB]: + * Windows-based SMB servers send 50 (0x32) words in the extended + * response although they set the WordCount field to 0x2A. + * + * And Samba does the same... + */ + .status = NT_STATUS_OK, + .wct = 0x2a + }, + { + .status = NT_STATUS_OK, + .wct = 0x32 + }, + }; + + status = smb1cli_req_recv(subreq, state, + &recv_iov, + NULL, /* phdr */ + &wct, + &vwv, + NULL, /* pvwv_offset */ + NULL, /* num_bytes */ + NULL, /* bytes */ + NULL, /* pbytes_offset */ + NULL, /* inbuf */ + expected, ARRAY_SIZE(expected)); + TALLOC_FREE(subreq); + if (tevent_req_nterror(req, status)) { + return; + } + + state->fnum = SVAL(vwv+2, 1); + tevent_req_done(req); +} + +/** + * Receive the response to an asynchronous SMB_COM_NT_CREATE_ANDX request. + * <a href="http://msdn.microsoft.com/en-us/library/ee441612.aspx">MS-CIFS 2.2.4.64.2</a> + * + * @param[in] req A tevent request created with smb1cli_ntcreatex_send() + * @param[out] pfnum The file id of the opened file or directory. + * + * @return NT_STATUS_OK on success + */ +NTSTATUS smb1cli_ntcreatex_recv(struct tevent_req *req, uint16_t *pfnum) +{ + struct smb1cli_ntcreatex_state *state = tevent_req_data( + req, struct smb1cli_ntcreatex_state); + NTSTATUS status; + + if (tevent_req_is_nterror(req, &status)) { + tevent_req_received(req); + return status; + } + + *pfnum = state->fnum; + tevent_req_received(req); + return NT_STATUS_OK; +} + + +/** + * Send a synchronous SMB_COM_NT_CREATE_ANDX request. + * <a href="http://msdn.microsoft.com/en-us/library/ee442091.aspx">MS-CIFS 2.2.4.64</a> + * @see smb1cli_ntcreatex_send() smb1cli_ntcreatex_recv() + * + * @param[in] conn The smb connection. + * @param[in] timeout_msec If positive a timeout for the request. + * @param[in] pid The process identifier + * @param[in] tcon The smb tree connect. + * @param[in] session The smb session. + * @param[in] fname The name of the file or directory to be opened or created. + * @param[in] CreatFlags + * @param[in] RootDirectoryFid The file id of an opened root directory fname is based on. 0 means root of the share. + * @param[in] DesiredAccess A field of flags that indicate standard, specific, and generic access rights to be requested. + * @param[in] AllocationSize Number of Bytes to allocate if the file is to be created or overwritten. + * @param[in] FileAttributes <a href="http://msdn.microsoft.com/en-us/library/ee878573.aspx">Extended file attributes</a> + * @param[in] ShareAccess A field that specifies how the file should be shared with other processes. + * @param[in] CreateDisposition A value that represents the action to take if the file already exists or if the file is a new file and does not already exist. + * @param[in] CreateOptions A field of flag options to use if creating a file or directory. + * @param[in] ImpersonationLevel + * @param[in] SecurityFlags + * @param[out] pfnum The file id representing the file or directory created or opened. + * + * @return NT_STATUS_OK on success + */ +NTSTATUS smb1cli_ntcreatex(struct smbXcli_conn *conn, + uint32_t timeout_msec, + uint32_t pid, + struct smbXcli_tcon *tcon, + struct smbXcli_session *session, + const char *fname, + uint32_t CreatFlags, + uint32_t RootDirectoryFid, + uint32_t DesiredAccess, + uint64_t AllocationSize, + uint32_t FileAttributes, + uint32_t ShareAccess, + uint32_t CreateDisposition, + uint32_t CreateOptions, + uint32_t ImpersonationLevel, + uint8_t SecurityFlags, + uint16_t *pfnum) +{ + TALLOC_CTX *frame = NULL; + struct tevent_context *ev; + struct tevent_req *req; + NTSTATUS status = NT_STATUS_OK; + + frame = talloc_stackframe(); + + if (smbXcli_conn_has_async_calls(conn)) { + /* + * Can't use sync call while an async call is in flight + */ + status = NT_STATUS_INVALID_PARAMETER; + goto fail; + } + + ev = samba_tevent_context_init(frame); + if (ev == NULL) { + status = NT_STATUS_NO_MEMORY; + goto fail; + } + + req = smb1cli_ntcreatex_send(frame, ev, conn, + timeout_msec, + pid, tcon, session, + fname, CreatFlags, RootDirectoryFid, + DesiredAccess, AllocationSize, + FileAttributes, ShareAccess, + CreateDisposition, CreateOptions, + ImpersonationLevel, SecurityFlags); + if (req == NULL) { + status = NT_STATUS_NO_MEMORY; + goto fail; + } + + if (!tevent_req_poll_ntstatus(req, ev, &status)) { + goto fail; + } + + status = smb1cli_ntcreatex_recv(req, pfnum); +fail: + TALLOC_FREE(frame); + return status; +} |