2 Unix SMB/CIFS implementation.
4 SMB2 composite connection setup
6 Copyright (C) Andrew Tridgell 2005
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>.
23 #include "libcli/raw/libcliraw.h"
24 #include "libcli/raw/raw_proto.h"
25 #include "libcli/smb2/smb2.h"
26 #include "libcli/smb2/smb2_calls.h"
27 #include "libcli/composite/composite.h"
28 #include "libcli/resolve/resolve.h"
29 #include "param/param.h"
31 struct smb2_connect_state {
32 struct cli_credentials *credentials;
33 struct resolve_context *resolve_ctx;
36 struct smb2_negprot negprot;
37 struct smb2_tree_connect tcon;
38 struct smb2_session *session;
39 struct smb2_tree *tree;
43 continue after tcon reply
45 static void continue_tcon(struct smb2_request *req)
47 struct composite_context *c = talloc_get_type(req->async.private,
48 struct composite_context);
49 struct smb2_connect_state *state = talloc_get_type(c->private_data,
50 struct smb2_connect_state);
52 c->status = smb2_tree_connect_recv(req, &state->tcon);
53 if (!composite_is_ok(c)) return;
55 state->tree->tid = state->tcon.out.tid;
61 continue after a session setup
63 static void continue_session(struct composite_context *creq)
65 struct composite_context *c = talloc_get_type(creq->async.private_data,
66 struct composite_context);
67 struct smb2_connect_state *state = talloc_get_type(c->private_data,
68 struct smb2_connect_state);
69 struct smb2_request *req;
71 c->status = smb2_session_setup_spnego_recv(creq);
72 if (!composite_is_ok(c)) return;
74 state->tree = smb2_tree_init(state->session, state, true);
75 if (composite_nomem(state->tree, c)) return;
77 state->tcon.in.reserved = 0;
78 state->tcon.in.path = talloc_asprintf(state, "\\\\%s\\%s",
79 state->host, state->share);
80 if (composite_nomem(state->tcon.in.path, c)) return;
82 req = smb2_tree_connect_send(state->tree, &state->tcon);
83 if (composite_nomem(req, c)) return;
85 req->async.fn = continue_tcon;
86 req->async.private = c;
90 continue after negprot reply
92 static void continue_negprot(struct smb2_request *req)
94 struct composite_context *c = talloc_get_type(req->async.private,
95 struct composite_context);
96 struct smb2_connect_state *state = talloc_get_type(c->private_data,
97 struct smb2_connect_state);
98 struct smb2_transport *transport = req->transport;
99 struct composite_context *creq;
101 c->status = smb2_negprot_recv(req, c, &state->negprot);
102 if (!composite_is_ok(c)) return;
104 state->session = smb2_session_init(transport, global_loadparm, state, true);
105 if (composite_nomem(state->session, c)) return;
107 creq = smb2_session_setup_spnego_send(state->session, state->credentials);
109 composite_continue(c, creq, continue_session, c);
113 continue after a socket connect completes
115 static void continue_socket(struct composite_context *creq)
117 struct composite_context *c = talloc_get_type(creq->async.private_data,
118 struct composite_context);
119 struct smb2_connect_state *state = talloc_get_type(c->private_data,
120 struct smb2_connect_state);
121 struct smbcli_socket *sock;
122 struct smb2_transport *transport;
123 struct smb2_request *req;
124 uint16_t dialects[1];
126 c->status = smbcli_sock_connect_recv(creq, state, &sock);
127 if (!composite_is_ok(c)) return;
129 transport = smb2_transport_init(sock, state);
130 if (composite_nomem(transport, c)) return;
132 ZERO_STRUCT(state->negprot);
133 state->negprot.in.dialect_count = 1;
134 state->negprot.in.security_mode = 0;
135 state->negprot.in.capabilities = 0;
136 unix_to_nt_time(&state->negprot.in.start_time, time(NULL));
137 dialects[0] = SMB2_DIALECT_REVISION;
138 state->negprot.in.dialects = dialects;
140 req = smb2_negprot_send(transport, &state->negprot);
141 if (composite_nomem(req, c)) return;
143 req->async.fn = continue_negprot;
144 req->async.private = c;
149 continue after a resolve finishes
151 static void continue_resolve(struct composite_context *creq)
153 struct composite_context *c = talloc_get_type(creq->async.private_data,
154 struct composite_context);
155 struct smb2_connect_state *state = talloc_get_type(c->private_data,
156 struct smb2_connect_state);
158 const char *ports[2] = { "445", NULL };
160 c->status = resolve_name_recv(creq, state, &addr);
161 if (!composite_is_ok(c)) return;
163 creq = smbcli_sock_connect_send(state, addr, ports, state->host, state->resolve_ctx, c->event_ctx);
165 composite_continue(c, creq, continue_socket, c);
169 a composite function that does a full negprot/sesssetup/tcon, returning
170 a connected smb2_tree
172 struct composite_context *smb2_connect_send(TALLOC_CTX *mem_ctx,
175 struct resolve_context *resolve_ctx,
176 struct cli_credentials *credentials,
177 struct event_context *ev)
179 struct composite_context *c;
180 struct smb2_connect_state *state;
181 struct nbt_name name;
182 struct composite_context *creq;
184 c = composite_create(mem_ctx, ev);
185 if (c == NULL) return NULL;
187 state = talloc(c, struct smb2_connect_state);
188 if (composite_nomem(state, c)) return c;
189 c->private_data = state;
191 state->credentials = credentials;
192 state->host = talloc_strdup(c, host);
193 if (composite_nomem(state->host, c)) return c;
194 state->share = talloc_strdup(c, share);
195 if (composite_nomem(state->share, c)) return c;
196 state->resolve_ctx = talloc_reference(state, resolve_ctx);
201 creq = resolve_name_send(resolve_ctx, &name, c->event_ctx);
202 composite_continue(c, creq, continue_resolve, c);
207 receive a connect reply
209 NTSTATUS smb2_connect_recv(struct composite_context *c, TALLOC_CTX *mem_ctx,
210 struct smb2_tree **tree)
213 struct smb2_connect_state *state = talloc_get_type(c->private_data,
214 struct smb2_connect_state);
215 status = composite_wait(c);
216 if (NT_STATUS_IS_OK(status)) {
217 *tree = talloc_steal(mem_ctx, state->tree);
224 sync version of smb2_connect
226 NTSTATUS smb2_connect(TALLOC_CTX *mem_ctx,
227 const char *host, const char *share,
228 struct resolve_context *resolve_ctx,
229 struct cli_credentials *credentials,
230 struct smb2_tree **tree,
231 struct event_context *ev)
233 struct composite_context *c = smb2_connect_send(mem_ctx, host, share,
236 return smb2_connect_recv(c, mem_ctx, tree);