diff options
Diffstat (limited to 'libcli/smb')
| -rw-r--r-- | libcli/smb/smb2cli_echo.c | 121 | ||||
| -rw-r--r-- | libcli/smb/smbXcli_base.h | 8 | ||||
| -rwxr-xr-x | libcli/smb/wscript | 1 |
3 files changed, 130 insertions, 0 deletions
diff --git a/libcli/smb/smb2cli_echo.c b/libcli/smb/smb2cli_echo.c new file mode 100644 index 0000000000..b978d506b9 --- /dev/null +++ b/libcli/smb/smb2cli_echo.c @@ -0,0 +1,121 @@ +/* + Unix SMB/CIFS implementation. + smb2 lib + Copyright (C) Stefan Metzmacher 2012 + + 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 smb2cli_echo_state { + uint8_t fixed[0x4]; +}; + +static void smb2cli_echo_done(struct tevent_req *subreq); + +struct tevent_req *smb2cli_echo_send(TALLOC_CTX *mem_ctx, + struct tevent_context *ev, + struct smbXcli_conn *conn, + uint32_t timeout_msec) +{ + struct tevent_req *req, *subreq; + struct smb2cli_echo_state *state; + uint8_t *fixed; + + req = tevent_req_create(mem_ctx, &state, + struct smb2cli_echo_state); + if (req == NULL) { + return NULL; + } + fixed = state->fixed; + SSVAL(fixed, 0, 4); + SSVAL(fixed, 2, 0); + + subreq = smb2cli_req_send(state, ev, conn, SMB2_OP_KEEPALIVE, + 0, 0, /* flags */ + timeout_msec, + NULL, /* tcon */ + NULL, /* session */ + state->fixed, sizeof(state->fixed), + NULL, 0); + if (tevent_req_nomem(subreq, req)) { + return tevent_req_post(req, ev); + } + tevent_req_set_callback(subreq, smb2cli_echo_done, req); + return req; +} + +static void smb2cli_echo_done(struct tevent_req *subreq) +{ + struct tevent_req *req = + tevent_req_callback_data(subreq, + struct tevent_req); + NTSTATUS status; + static const struct smb2cli_req_expected_response expected[] = { + { + .status = NT_STATUS_OK, + .body_size = 0x04 + } + }; + + status = smb2cli_req_recv(subreq, NULL, NULL, + expected, ARRAY_SIZE(expected)); + TALLOC_FREE(subreq); + if (tevent_req_nterror(req, status)) { + return; + } + tevent_req_done(req); +} + +NTSTATUS smb2cli_echo_recv(struct tevent_req *req) +{ + return tevent_req_simple_recv_ntstatus(req); +} + +NTSTATUS smb2cli_echo(struct smbXcli_conn *conn, + uint32_t timeout_msec) +{ + TALLOC_CTX *frame = talloc_stackframe(); + struct tevent_context *ev; + struct tevent_req *req; + NTSTATUS status = NT_STATUS_NO_MEMORY; + + 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 = tevent_context_init(frame); + if (ev == NULL) { + goto fail; + } + req = smb2cli_echo_send(frame, ev, conn, timeout_msec); + if (req == NULL) { + goto fail; + } + if (!tevent_req_poll_ntstatus(req, ev, &status)) { + goto fail; + } + status = smb2cli_echo_recv(req); + fail: + TALLOC_FREE(frame); + return status; +} diff --git a/libcli/smb/smbXcli_base.h b/libcli/smb/smbXcli_base.h index 5ef201e3a9..954ff45ad9 100644 --- a/libcli/smb/smbXcli_base.h +++ b/libcli/smb/smbXcli_base.h @@ -567,4 +567,12 @@ NTSTATUS smb2cli_ioctl(struct smbXcli_conn *conn, DATA_BLOB *out_input_buffer, DATA_BLOB *out_output_buffer); +struct tevent_req *smb2cli_echo_send(TALLOC_CTX *mem_ctx, + struct tevent_context *ev, + struct smbXcli_conn *conn, + uint32_t timeout_msec); +NTSTATUS smb2cli_echo_recv(struct tevent_req *req); +NTSTATUS smb2cli_echo(struct smbXcli_conn *conn, + uint32_t timeout_msec); + #endif /* _SMBXCLI_BASE_H_ */ diff --git a/libcli/smb/wscript b/libcli/smb/wscript index ae65d684df..0a498d8551 100755 --- a/libcli/smb/wscript +++ b/libcli/smb/wscript @@ -31,6 +31,7 @@ def build(bld): smb2cli_query_info.c smb2cli_query_directory.c smb2cli_ioctl.c + smb2cli_echo.c ''', deps='LIBCRYPTO errors gensec krb5samba smb_transport', public_deps='talloc samba-util', |