2 Unix SMB/CIFS implementation.
4 Copyright (C) Andrew Tridgell 2005
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 a composite API for making a full SMB connection
25 #include "libcli/raw/libcliraw.h"
26 #include "libcli/composite/composite.h"
28 /* the stages of this call */
29 enum connect_stage {CONNECT_RESOLVE,
31 CONNECT_SESSION_REQUEST,
33 CONNECT_SESSION_SETUP,
36 struct connect_state {
37 enum connect_stage stage;
38 struct smbcli_socket *sock;
39 struct smbcli_transport *transport;
40 struct smbcli_session *session;
41 struct smb_composite_connect *io;
42 union smb_tcon *io_tcon;
43 struct smb_composite_sesssetup *io_setup;
44 struct smbcli_request *req;
45 struct smbcli_composite *creq;
49 static void request_handler(struct smbcli_request *);
50 static void composite_handler(struct smbcli_composite *);
55 static NTSTATUS connect_send_negprot(struct smbcli_composite *c,
56 struct smb_composite_connect *io)
58 struct connect_state *state = talloc_get_type(c->private, struct connect_state);
60 state->req = smb_raw_negotiate_send(state->transport, lp_maxprotocol());
61 NT_STATUS_HAVE_NO_MEMORY(state->req);
63 state->req->async.fn = request_handler;
64 state->req->async.private = c;
65 state->stage = CONNECT_NEGPROT;
72 a tree connect request has competed
74 static NTSTATUS connect_tcon(struct smbcli_composite *c,
75 struct smb_composite_connect *io)
77 struct connect_state *state = talloc_get_type(c->private, struct connect_state);
80 status = smb_tree_connect_recv(state->req, c, state->io_tcon);
81 NT_STATUS_NOT_OK_RETURN(status);
83 io->out.tree->tid = state->io_tcon->tconx.out.tid;
84 if (state->io_tcon->tconx.out.dev_type) {
85 io->out.tree->device = talloc_strdup(io->out.tree,
86 state->io_tcon->tconx.out.dev_type);
88 if (state->io_tcon->tconx.out.fs_type) {
89 io->out.tree->fs_type = talloc_strdup(io->out.tree,
90 state->io_tcon->tconx.out.fs_type);
94 c->state = SMBCLI_REQUEST_DONE;
101 a session setup request has competed
103 static NTSTATUS connect_session_setup(struct smbcli_composite *c,
104 struct smb_composite_connect *io)
106 struct connect_state *state = talloc_get_type(c->private, struct connect_state);
109 status = smb_composite_sesssetup_recv(state->creq);
110 NT_STATUS_NOT_OK_RETURN(status);
112 state->session->vuid = state->io_setup->out.vuid;
114 /* setup for a tconx */
115 io->out.tree = smbcli_tree_init(state->session);
116 NT_STATUS_HAVE_NO_MEMORY(io->out.tree);
118 state->io_tcon = talloc(c, union smb_tcon);
119 NT_STATUS_HAVE_NO_MEMORY(state->io_tcon);
121 /* connect to a share using a tree connect */
122 state->io_tcon->generic.level = RAW_TCON_TCONX;
123 state->io_tcon->tconx.in.flags = 0;
124 state->io_tcon->tconx.in.password = data_blob(NULL, 0);
126 state->io_tcon->tconx.in.path = talloc_asprintf(state->io_tcon,
130 NT_STATUS_HAVE_NO_MEMORY(state->io_tcon->tconx.in.path);
131 if (!io->in.service_type) {
132 state->io_tcon->tconx.in.device = "?????";
134 state->io_tcon->tconx.in.device = io->in.service_type;
137 state->req = smb_tree_connect_send(io->out.tree, state->io_tcon);
138 NT_STATUS_HAVE_NO_MEMORY(state->req);
140 state->req->async.fn = request_handler;
141 state->req->async.private = c;
142 state->stage = CONNECT_TCON;
148 a negprot request has competed
150 static NTSTATUS connect_negprot(struct smbcli_composite *c,
151 struct smb_composite_connect *io)
153 struct connect_state *state = talloc_get_type(c->private, struct connect_state);
156 status = smb_raw_negotiate_recv(state->req);
157 NT_STATUS_NOT_OK_RETURN(status);
159 /* next step is a session setup */
160 state->session = smbcli_session_init(state->transport);
161 NT_STATUS_HAVE_NO_MEMORY(state->session);
163 /* get rid of the extra reference to the transport */
164 talloc_free(state->transport);
166 state->io_setup = talloc(c, struct smb_composite_sesssetup);
167 NT_STATUS_HAVE_NO_MEMORY(state->io_setup);
169 /* prepare a session setup to establish a security context */
170 state->io_setup->in.sesskey = state->transport->negotiate.sesskey;
171 state->io_setup->in.capabilities = state->transport->negotiate.capabilities;
172 state->io_setup->in.domain = io->in.domain;
173 state->io_setup->in.user = io->in.user;
174 state->io_setup->in.password = io->in.password;
176 state->creq = smb_composite_sesssetup_send(state->session, state->io_setup);
177 NT_STATUS_HAVE_NO_MEMORY(state->creq);
179 state->creq->async.fn = composite_handler;
180 state->creq->async.private = c;
181 state->stage = CONNECT_SESSION_SETUP;
188 a session request operation has competed
190 static NTSTATUS connect_session_request(struct smbcli_composite *c,
191 struct smb_composite_connect *io)
193 struct connect_state *state = talloc_get_type(c->private, struct connect_state);
196 status = smbcli_transport_connect_recv(state->req);
197 NT_STATUS_NOT_OK_RETURN(status);
199 /* next step is a negprot */
200 return connect_send_negprot(c, io);
204 a socket connection operation has competed
206 static NTSTATUS connect_socket(struct smbcli_composite *c,
207 struct smb_composite_connect *io)
209 struct connect_state *state = talloc_get_type(c->private, struct connect_state);
211 struct nbt_name calling, called;
213 status = smbcli_sock_connect_recv(state->creq);
214 NT_STATUS_NOT_OK_RETURN(status);
216 /* the socket is up - we can initialise the smbcli transport layer */
217 state->transport = smbcli_transport_init(state->sock);
218 NT_STATUS_HAVE_NO_MEMORY(state->transport);
220 calling.name = io->in.calling_name;
221 calling.type = NBT_NAME_CLIENT;
222 calling.scope = NULL;
224 nbt_choose_called_name(state, &called, io->in.called_name, NBT_NAME_SERVER);
226 /* we have a connected socket - next step is a session
227 request, if needed. Port 445 doesn't need it, so it goes
228 straight to the negprot */
229 if (state->sock->port == 445) {
230 status = nbt_name_dup(state->transport, &called,
231 &state->transport->called);
232 NT_STATUS_NOT_OK_RETURN(status);
233 return connect_send_negprot(c, io);
236 state->req = smbcli_transport_connect_send(state->transport, &calling, &called);
237 NT_STATUS_HAVE_NO_MEMORY(state->req);
239 state->req->async.fn = request_handler;
240 state->req->async.private = c;
241 state->stage = CONNECT_SESSION_REQUEST;
248 called when name resolution is finished
250 static NTSTATUS connect_resolve(struct smbcli_composite *c,
251 struct smb_composite_connect *io)
253 struct connect_state *state = talloc_get_type(c->private, struct connect_state);
257 status = resolve_name_recv(state->creq, state, &address);
258 NT_STATUS_NOT_OK_RETURN(status);
260 state->creq = smbcli_sock_connect_send(state->sock, address, state->io->in.port);
261 NT_STATUS_HAVE_NO_MEMORY(state->creq);
263 state->stage = CONNECT_SOCKET;
264 state->creq->async.private = c;
265 state->creq->async.fn = composite_handler;
272 handle and dispatch state transitions
274 static void state_handler(struct smbcli_composite *c)
276 struct connect_state *state = talloc_get_type(c->private, struct connect_state);
278 switch (state->stage) {
279 case CONNECT_RESOLVE:
280 c->status = connect_resolve(c, state->io);
283 c->status = connect_socket(c, state->io);
285 case CONNECT_SESSION_REQUEST:
286 c->status = connect_session_request(c, state->io);
288 case CONNECT_NEGPROT:
289 c->status = connect_negprot(c, state->io);
291 case CONNECT_SESSION_SETUP:
292 c->status = connect_session_setup(c, state->io);
295 c->status = connect_tcon(c, state->io);
299 if (!NT_STATUS_IS_OK(c->status)) {
300 c->state = SMBCLI_REQUEST_ERROR;
303 if (c->state >= SMBCLI_REQUEST_DONE &&
311 handler for completion of a smbcli_request sub-request
313 static void request_handler(struct smbcli_request *req)
315 struct smbcli_composite *c = talloc_get_type(req->async.private,
316 struct smbcli_composite);
317 return state_handler(c);
321 handler for completion of a smbcli_composite sub-request
323 static void composite_handler(struct smbcli_composite *req)
325 struct smbcli_composite *c = talloc_get_type(req->async.private,
326 struct smbcli_composite);
327 return state_handler(c);
331 a function to establish a smbcli_tree from scratch
333 struct smbcli_composite *smb_composite_connect_send(struct smb_composite_connect *io,
334 struct event_context *event_ctx)
336 struct smbcli_composite *c;
337 struct connect_state *state;
338 struct nbt_name name;
340 c = talloc_zero(NULL, struct smbcli_composite);
341 if (c == NULL) goto failed;
343 state = talloc(c, struct connect_state);
344 if (state == NULL) goto failed;
346 state->sock = smbcli_sock_init(state, event_ctx);
347 if (state->sock == NULL) goto failed;
350 state->stage = CONNECT_RESOLVE;
352 c->state = SMBCLI_REQUEST_SEND;
353 c->event_ctx = talloc_reference(c, state->sock->event.ctx);
356 name.name = io->in.dest_host;
357 name.type = NBT_NAME_SERVER;
360 state->creq = resolve_name_send(&name, c->event_ctx);
361 if (state->creq == NULL) goto failed;
363 state->creq->async.private = c;
364 state->creq->async.fn = composite_handler;
373 recv half of async composite connect code
375 NTSTATUS smb_composite_connect_recv(struct smbcli_composite *c, TALLOC_CTX *mem_ctx)
379 status = smb_composite_wait(c);
381 if (NT_STATUS_IS_OK(status)) {
382 struct connect_state *state = talloc_get_type(c->private, struct connect_state);
383 talloc_steal(mem_ctx, state->io->out.tree);
391 sync version of smb_composite_connect
393 NTSTATUS smb_composite_connect(struct smb_composite_connect *io, TALLOC_CTX *mem_ctx)
395 struct smbcli_composite *c = smb_composite_connect_send(io, NULL);
396 return smb_composite_connect_recv(c, mem_ctx);