From 8daa83a594a2e98f39d764422bfbdbc62c9efd44 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 19:20:00 +0200 Subject: Adding upstream version 2:4.20.0+dfsg. Signed-off-by: Daniel Baumann --- libcli/smb/smb2cli_tcon.c | 461 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 461 insertions(+) create mode 100644 libcli/smb/smb2cli_tcon.c (limited to 'libcli/smb/smb2cli_tcon.c') diff --git a/libcli/smb/smb2cli_tcon.c b/libcli/smb/smb2cli_tcon.c new file mode 100644 index 0000000..d5e4fc3 --- /dev/null +++ b/libcli/smb/smb2cli_tcon.c @@ -0,0 +1,461 @@ +/* + Unix SMB/CIFS implementation. + smb2 lib + Copyright (C) Volker Lendecke 2011 + + 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 . +*/ + +#include "includes.h" +#include "system/network.h" +#include "../lib/util/tevent_ntstatus.h" +#include "../libcli/smb/smb_common.h" +#include "../libcli/smb/smbXcli_base.h" + +struct smb2cli_raw_tcon_state { + struct smbXcli_session *session; + struct smbXcli_tcon *tcon; + uint8_t fixed[8]; + uint8_t dyn_pad[1]; +}; + +static void smb2cli_raw_tcon_done(struct tevent_req *subreq); + +struct tevent_req *smb2cli_raw_tcon_send(TALLOC_CTX *mem_ctx, + struct tevent_context *ev, + struct smbXcli_conn *conn, + uint32_t additional_flags, + uint32_t clear_flags, + uint32_t timeout_msec, + struct smbXcli_session *session, + struct smbXcli_tcon *tcon, + uint16_t tcon_flags, + const char *unc) +{ + struct tevent_req *req = NULL; + struct smb2cli_raw_tcon_state *state = NULL; + struct tevent_req *subreq = NULL; + uint8_t *fixed = NULL; + uint8_t *dyn = NULL; + size_t dyn_len; + + req = tevent_req_create(mem_ctx, &state, + struct smb2cli_raw_tcon_state); + if (req == NULL) { + return NULL; + } + state->session = session; + state->tcon = tcon; + + if (!convert_string_talloc(state, CH_UNIX, CH_UTF16, + unc, strlen(unc), + &dyn, &dyn_len)) { + tevent_req_oom(req); + return tevent_req_post(req, ev); + } + + if (strlen(unc) == 0) { + TALLOC_FREE(dyn); + dyn_len = 0; + } + + fixed = state->fixed; + SSVAL(fixed, 0, 9); + if (smbXcli_conn_protocol(conn) >= PROTOCOL_SMB3_11) { + SSVAL(fixed, 2, tcon_flags); + } else { + SSVAL(fixed, 2, 0); /* Reserved */ + } + SSVAL(fixed, 4, SMB2_HDR_BODY + 8); + SSVAL(fixed, 6, dyn_len); + + if (dyn_len == 0) { + dyn = state->dyn_pad; + dyn_len = sizeof(state->dyn_pad); + } + + subreq = smb2cli_req_send(state, ev, conn, SMB2_OP_TCON, + additional_flags, clear_flags, + timeout_msec, + NULL, /* tcon */ + session, + state->fixed, sizeof(state->fixed), + dyn, dyn_len, + 0); /* max_dyn_len */ + if (tevent_req_nomem(subreq, req)) { + return tevent_req_post(req, ev); + } + tevent_req_set_callback(subreq, smb2cli_raw_tcon_done, req); + + return req; +} + +static void smb2cli_raw_tcon_done(struct tevent_req *subreq) +{ + struct tevent_req *req = tevent_req_callback_data( + subreq, struct tevent_req); + struct smb2cli_raw_tcon_state *state = tevent_req_data( + req, struct smb2cli_raw_tcon_state); + NTSTATUS status; + struct iovec *iov; + uint8_t *body; + uint32_t tcon_id; + uint8_t share_type; + uint32_t share_flags; + uint32_t share_capabilities; + uint32_t maximal_access; + static const struct smb2cli_req_expected_response expected[] = { + { + .status = NT_STATUS_OK, + .body_size = 0x10 + } + }; + + status = smb2cli_req_recv(subreq, state, &iov, + expected, ARRAY_SIZE(expected)); + TALLOC_FREE(subreq); + if (!NT_STATUS_IS_OK(status)) { + tevent_req_nterror(req, status); + return; + } + + tcon_id = IVAL(iov[0].iov_base, SMB2_HDR_TID); + + body = (uint8_t *)iov[1].iov_base; + share_type = CVAL(body, 0x02); + share_flags = IVAL(body, 0x04); + share_capabilities = IVAL(body, 0x08); + maximal_access = IVAL(body, 0x0C); + + smb2cli_tcon_set_values(state->tcon, + state->session, + tcon_id, + share_type, + share_flags, + share_capabilities, + maximal_access); + + tevent_req_done(req); +} + +NTSTATUS smb2cli_raw_tcon_recv(struct tevent_req *req) +{ + return tevent_req_simple_recv_ntstatus(req); +} + +NTSTATUS smb2cli_raw_tcon(struct smbXcli_conn *conn, + uint32_t additional_flags, + uint32_t clear_flags, + uint32_t timeout_msec, + struct smbXcli_session *session, + struct smbXcli_tcon *tcon, + uint16_t tcon_flags, + const char *unc) +{ + 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 = samba_tevent_context_init(frame); + if (ev == NULL) { + goto fail; + } + req = smb2cli_raw_tcon_send(frame, ev, conn, + additional_flags, clear_flags, + timeout_msec, session, tcon, + tcon_flags, unc); + if (req == NULL) { + goto fail; + } + if (!tevent_req_poll_ntstatus(req, ev, &status)) { + goto fail; + } + status = smb2cli_raw_tcon_recv(req); + fail: + TALLOC_FREE(frame); + return status; +} + +struct smb2cli_tcon_state { + struct tevent_context *ev; + struct smbXcli_conn *conn; + uint32_t timeout_msec; + struct smbXcli_session *session; + struct smbXcli_tcon *tcon; + uint8_t fixed[8]; + uint8_t dyn_pad[1]; +}; + +static void smb2cli_tcon_done(struct tevent_req *subreq); + +struct tevent_req *smb2cli_tcon_send(TALLOC_CTX *mem_ctx, + struct tevent_context *ev, + struct smbXcli_conn *conn, + uint32_t timeout_msec, + struct smbXcli_session *session, + struct smbXcli_tcon *tcon, + uint16_t flags, + const char *unc) +{ + struct tevent_req *req, *subreq; + struct smb2cli_tcon_state *state; + uint32_t additional_flags = 0; + uint32_t clear_flags = 0; + + req = tevent_req_create(mem_ctx, &state, struct smb2cli_tcon_state); + if (req == NULL) { + return NULL; + } + state->ev = ev; + state->conn = conn; + state->timeout_msec = timeout_msec; + state->session = session; + state->tcon = tcon; + + if (smbXcli_session_is_authenticated(state->session)) { + additional_flags |= SMB2_HDR_FLAG_SIGNED; + } + + subreq = smb2cli_raw_tcon_send(state, + state->ev, + state->conn, + additional_flags, + clear_flags, + state->timeout_msec, + state->session, + state->tcon, + flags, + unc); + if (tevent_req_nomem(subreq, req)) { + return tevent_req_post(req, ev); + } + tevent_req_set_callback(subreq, smb2cli_tcon_done, req); + + return req; +} + +static void smb2cli_tcon_validate(struct tevent_req *subreq); + +static void smb2cli_tcon_done(struct tevent_req *subreq) +{ + struct tevent_req *req = tevent_req_callback_data( + subreq, struct tevent_req); + struct smb2cli_tcon_state *state = tevent_req_data( + req, struct smb2cli_tcon_state); + NTSTATUS status; + + status = smb2cli_raw_tcon_recv(subreq); + TALLOC_FREE(subreq); + if (tevent_req_nterror(req, status)) { + return; + } + + if (!smbXcli_session_is_authenticated(state->session)) { + tevent_req_done(req); + return; + } + + if (smbXcli_conn_protocol(state->conn) >= PROTOCOL_SMB3_11) { + tevent_req_done(req); + return; + } + + subreq = smb2cli_validate_negotiate_info_send(state, state->ev, + state->conn, + state->timeout_msec, + state->session, + state->tcon); + if (tevent_req_nomem(subreq, req)) { + return; + } + tevent_req_set_callback(subreq, smb2cli_tcon_validate, req); +} + +static void smb2cli_tcon_validate(struct tevent_req *subreq) +{ + struct tevent_req *req = tevent_req_callback_data( + subreq, struct tevent_req); + struct smb2cli_tcon_state *state = tevent_req_data( + req, struct smb2cli_tcon_state); + NTSTATUS status; + + status = smb2cli_validate_negotiate_info_recv(subreq); + TALLOC_FREE(subreq); + if (!NT_STATUS_IS_OK(status)) { + smb2cli_tcon_set_values(state->tcon, NULL, + UINT32_MAX, 0, 0, 0, 0); + tevent_req_nterror(req, status); + return; + } + + tevent_req_done(req); +} + +NTSTATUS smb2cli_tcon_recv(struct tevent_req *req) +{ + return tevent_req_simple_recv_ntstatus(req); +} + +NTSTATUS smb2cli_tcon(struct smbXcli_conn *conn, + uint32_t timeout_msec, + struct smbXcli_session *session, + struct smbXcli_tcon *tcon, + uint16_t flags, + const char *unc) +{ + 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 = samba_tevent_context_init(frame); + if (ev == NULL) { + goto fail; + } + req = smb2cli_tcon_send(frame, ev, conn, + timeout_msec, session, tcon, + flags, unc); + if (req == NULL) { + goto fail; + } + if (!tevent_req_poll_ntstatus(req, ev, &status)) { + goto fail; + } + status = smb2cli_tcon_recv(req); + fail: + TALLOC_FREE(frame); + return status; +} + +struct smb2cli_tdis_state { + struct smbXcli_tcon *tcon; + uint8_t fixed[4]; +}; + +static void smb2cli_tdis_done(struct tevent_req *subreq); + +struct tevent_req *smb2cli_tdis_send(TALLOC_CTX *mem_ctx, + struct tevent_context *ev, + struct smbXcli_conn *conn, + uint32_t timeout_msec, + struct smbXcli_session *session, + struct smbXcli_tcon *tcon) +{ + struct tevent_req *req, *subreq; + struct smb2cli_tdis_state *state; + + req = tevent_req_create(mem_ctx, &state, + struct smb2cli_tdis_state); + if (req == NULL) { + return NULL; + } + state->tcon = tcon; + + SSVAL(state->fixed, 0, 4); + + subreq = smb2cli_req_send(state, ev, conn, SMB2_OP_TDIS, + 0, 0, /* flags */ + timeout_msec, + tcon, session, + state->fixed, sizeof(state->fixed), + NULL, 0, /* dyn* */ + 0); /* max_dyn_len */ + if (tevent_req_nomem(subreq, req)) { + return tevent_req_post(req, ev); + } + tevent_req_set_callback(subreq, smb2cli_tdis_done, req); + return req; +} + +static void smb2cli_tdis_done(struct tevent_req *subreq) +{ + struct tevent_req *req = + tevent_req_callback_data(subreq, + struct tevent_req); + struct smb2cli_tdis_state *state = + tevent_req_data(req, + struct smb2cli_tdis_state); + 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; + } + smb2cli_tcon_set_values(state->tcon, NULL, + UINT32_MAX, 0, 0, 0, 0); + tevent_req_done(req); +} + +NTSTATUS smb2cli_tdis_recv(struct tevent_req *req) +{ + return tevent_req_simple_recv_ntstatus(req); +} + +NTSTATUS smb2cli_tdis(struct smbXcli_conn *conn, + uint32_t timeout_msec, + struct smbXcli_session *session, + struct smbXcli_tcon *tcon) +{ + 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 = samba_tevent_context_init(frame); + if (ev == NULL) { + goto fail; + } + req = smb2cli_tdis_send(frame, ev, conn, + timeout_msec, session, tcon); + if (req == NULL) { + goto fail; + } + if (!tevent_req_poll_ntstatus(req, ev, &status)) { + goto fail; + } + status = smb2cli_tdis_recv(req); + fail: + TALLOC_FREE(frame); + return status; +} -- cgit v1.2.3