1 /*
2 a composite API for quering file system information
3 */
4
5 #include "includes.h"
6 #include "libcli/raw/libcliraw.h"
7 #include "libcli/composite/composite.h"
8 #include "libcli/smb_composite/smb_composite.h"
9
10 /* the stages of this call */
11 enum fsinfo_stage {FSINFO_CONNECT, FSINFO_QUERY};
12
13
14 static void fsinfo_raw_handler(struct smbcli_request *req);
15 static void fsinfo_composite_handler(struct composite_context *c);
16 static void fsinfo_state_handler(struct composite_context *c);
17
18 struct fsinfo_state {
19 enum fsinfo_stage stage;
20 struct composite_context *creq;
21 struct smb_composite_fsinfo *io;
22 struct smb_composite_connect *connect;
23 union smb_fsinfo *fsinfo;
24 struct smbcli_tree *tree;
25 struct smbcli_request *req;
26 };
27
fsinfo_connect(struct composite_context * c,struct smb_composite_fsinfo * io)28 static NTSTATUS fsinfo_connect(struct composite_context *c,
29 struct smb_composite_fsinfo *io)
30 {
31 NTSTATUS status;
32 struct fsinfo_state *state;
33 state = talloc_get_type(c->private_data, struct fsinfo_state);
34
35 status = smb_composite_connect_recv(state->creq, c);
36 NT_STATUS_NOT_OK_RETURN(status);
37
38 state->fsinfo = talloc(state, union smb_fsinfo);
39 NT_STATUS_HAVE_NO_MEMORY(state->fsinfo);
40
41 state->fsinfo->generic.level = io->in.level;
42
43 state->req = smb_raw_fsinfo_send(state->connect->out.tree,
44 state,
45 state->fsinfo);
46 NT_STATUS_HAVE_NO_MEMORY(state->req);
47
48 state->req->async.private = c;
49 state->req->async.fn = fsinfo_raw_handler;
50
51 state->stage = FSINFO_QUERY;
52 c->event_ctx = talloc_reference(c, state->req->session->transport->socket->event.ctx);
53
54 return NT_STATUS_OK;
55 }
56
fsinfo_query(struct composite_context * c,struct smb_composite_fsinfo * io)57 static NTSTATUS fsinfo_query(struct composite_context *c,
58 struct smb_composite_fsinfo *io)
59 {
60 NTSTATUS status;
61 struct fsinfo_state *state;
62 state = talloc_get_type(c->private_data, struct fsinfo_state);
63
64 status = smb_raw_fsinfo_recv(state->req, state, state->fsinfo);
65 NT_STATUS_NOT_OK_RETURN(status);
66
67 state->io->out.fsinfo = state->fsinfo;
68
69 c->state = COMPOSITE_STATE_DONE;
70
71 if (c->async.fn)
72 c->async.fn(c);
73
74 return NT_STATUS_OK;
75
76 }
77
78 /*
79 handler for completion of a sub-request in fsinfo
80 */
fsinfo_state_handler(struct composite_context * creq)81 static void fsinfo_state_handler(struct composite_context *creq)
82 {
83 struct fsinfo_state *state = talloc_get_type(creq->private_data, struct fsinfo_state);
84
85 /* when this handler is called, the stage indicates what
86 call has just finished */
87 switch (state->stage) {
88 case FSINFO_CONNECT:
89 creq->status = fsinfo_connect(creq, state->io);
90 break;
91
92 case FSINFO_QUERY:
93 creq->status = fsinfo_query(creq, state->io);
94 break;
95 }
96
97 if (!NT_STATUS_IS_OK(creq->status)) {
98 creq->state = COMPOSITE_STATE_ERROR;
99 }
100
101 if (creq->state >= COMPOSITE_STATE_DONE && creq->async.fn) {
102 creq->async.fn(creq);
103 }
104 }
105
106 /*
107 As raw and composite handlers take different requests, we need to handlers
108 to adapt both for the same state machine in fsinfo_state_handler()
109 */
fsinfo_raw_handler(struct smbcli_request * req)110 static void fsinfo_raw_handler(struct smbcli_request *req)
111 {
112 struct composite_context *c = talloc_get_type(req->async.private,
113 struct composite_context);
114 fsinfo_state_handler(c);
115 }
116
fsinfo_composite_handler(struct composite_context * creq)117 static void fsinfo_composite_handler(struct composite_context *creq)
118 {
119 struct composite_context *c = talloc_get_type(creq->async.private_data,
120 struct composite_context);
121 fsinfo_state_handler(c);
122 }
123
124 /*
125 composite fsinfo call - connects to a tree and queries a file system information
126 */
smb_composite_fsinfo_send(struct smbcli_tree * tree,struct smb_composite_fsinfo * io)127 struct composite_context *smb_composite_fsinfo_send(struct smbcli_tree *tree,
128 struct smb_composite_fsinfo *io)
129 {
130 struct composite_context *c;
131 struct fsinfo_state *state;
132
133 c = talloc_zero(tree, struct composite_context);
134 if (c == NULL) goto failed;
135
136 state = talloc(c, struct fsinfo_state);
137 if (state == NULL) goto failed;
138
139 state->io = io;
140
141 state->connect = talloc(state, struct smb_composite_connect);
142
143 if (state->connect == NULL) goto failed;
144
145 state->connect->in.dest_host = io->in.dest_host;
146 state->connect->in.port = io->in.port;
147 state->connect->in.called_name = io->in.called_name;
148 state->connect->in.service = io->in.service;
149 state->connect->in.service_type = io->in.service_type;
150 state->connect->in.credentials = io->in.credentials;
151 state->connect->in.fallback_to_anonymous = False;
152 state->connect->in.workgroup = io->in.workgroup;
153
154 c->state = COMPOSITE_STATE_IN_PROGRESS;
155 state->stage = FSINFO_CONNECT;
156 c->event_ctx = talloc_reference(c, tree->session->transport->socket->event.ctx);
157 c->private_data = state;
158
159 state->creq = smb_composite_connect_send(state->connect, state,
160 c->event_ctx);
161
162 if (state->creq == NULL) goto failed;
163
164 state->creq->async.private_data = c;
165 state->creq->async.fn = fsinfo_composite_handler;
166
167 return c;
168 failed:
169 talloc_free(c);
170 return NULL;
171 }
172
173 /*
174 composite fsinfo call - recv side
175 */
smb_composite_fsinfo_recv(struct composite_context * c,TALLOC_CTX * mem_ctx)176 NTSTATUS smb_composite_fsinfo_recv(struct composite_context *c, TALLOC_CTX *mem_ctx)
177 {
178 NTSTATUS status;
179
180 status = composite_wait(c);
181
182 if (NT_STATUS_IS_OK(status)) {
183 struct fsinfo_state *state = talloc_get_type(c->private_data, struct fsinfo_state);
184 talloc_steal(mem_ctx, state->io->out.fsinfo);
185 }
186
187 talloc_free(c);
188 return status;
189 }
190
191
192 /*
193 composite fsinfo call - sync interface
194 */
smb_composite_fsinfo(struct smbcli_tree * tree,TALLOC_CTX * mem_ctx,struct smb_composite_fsinfo * io)195 NTSTATUS smb_composite_fsinfo(struct smbcli_tree *tree,
196 TALLOC_CTX *mem_ctx,
197 struct smb_composite_fsinfo *io)
198 {
199 struct composite_context *c = smb_composite_fsinfo_send(tree, io);
200 return smb_composite_fsinfo_recv(c, mem_ctx);
201 }
202
203