r26654: libcli/smb_composite: Rather than specifying each of the gazillion options...
[jelmer/samba4-debian.git] / source / libcli / smb_composite / fsinfo.c
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 #include "param/param.h"
10 #include "libcli/resolve/resolve.h"
11
12 /* the stages of this call */
13 enum fsinfo_stage {FSINFO_CONNECT, FSINFO_QUERY};
14
15
16 static void fsinfo_raw_handler(struct smbcli_request *req);
17 static void fsinfo_composite_handler(struct composite_context *c);
18 static void fsinfo_state_handler(struct composite_context *c);
19
20 struct fsinfo_state {
21         enum fsinfo_stage stage;
22         struct composite_context *creq;
23         struct smb_composite_fsinfo *io;
24         struct smb_composite_connect *connect;
25         union smb_fsinfo *fsinfo;
26         struct smbcli_tree *tree;
27         struct smbcli_request *req;
28 };
29
30 static NTSTATUS fsinfo_connect(struct composite_context *c,
31                                struct smb_composite_fsinfo *io)
32 {
33         NTSTATUS status;
34         struct fsinfo_state *state;
35         state = talloc_get_type(c->private_data, struct fsinfo_state);
36
37         status = smb_composite_connect_recv(state->creq, c);
38         NT_STATUS_NOT_OK_RETURN(status);
39
40         state->fsinfo = talloc(state, union smb_fsinfo);
41         NT_STATUS_HAVE_NO_MEMORY(state->fsinfo);
42
43         state->fsinfo->generic.level = io->in.level;
44
45         state->req = smb_raw_fsinfo_send(state->connect->out.tree,
46                                          state,
47                                          state->fsinfo);
48         NT_STATUS_HAVE_NO_MEMORY(state->req);
49
50         state->req->async.private = c;
51         state->req->async.fn = fsinfo_raw_handler;
52
53         state->stage = FSINFO_QUERY;
54         c->event_ctx = talloc_reference(c, state->req->session->transport->socket->event.ctx);
55
56         return NT_STATUS_OK;
57 }
58
59 static NTSTATUS fsinfo_query(struct composite_context *c,
60                                struct smb_composite_fsinfo *io)
61 {
62         NTSTATUS status;
63         struct fsinfo_state *state;
64         state = talloc_get_type(c->private_data, struct fsinfo_state);
65
66         status = smb_raw_fsinfo_recv(state->req, state, state->fsinfo);
67         NT_STATUS_NOT_OK_RETURN(status);
68
69         state->io->out.fsinfo = state->fsinfo;
70
71         c->state = COMPOSITE_STATE_DONE;
72
73         if (c->async.fn)
74                 c->async.fn(c);
75
76         return NT_STATUS_OK;
77
78 }
79
80 /*
81   handler for completion of a sub-request in fsinfo
82 */
83 static void fsinfo_state_handler(struct composite_context *creq)
84 {
85         struct fsinfo_state *state = talloc_get_type(creq->private_data, struct fsinfo_state);
86
87         /* when this handler is called, the stage indicates what
88            call has just finished */
89         switch (state->stage) {
90         case FSINFO_CONNECT:
91                 creq->status = fsinfo_connect(creq, state->io);
92                 break;
93
94         case FSINFO_QUERY:
95                 creq->status = fsinfo_query(creq, state->io);
96                 break;
97         }
98
99         if (!NT_STATUS_IS_OK(creq->status)) {
100                 creq->state = COMPOSITE_STATE_ERROR;
101         }
102
103         if (creq->state >= COMPOSITE_STATE_DONE && creq->async.fn) {
104                 creq->async.fn(creq);
105         }
106 }
107
108 /* 
109    As raw and composite handlers take different requests, we need to handlers
110    to adapt both for the same state machine in fsinfo_state_handler()
111 */
112 static void fsinfo_raw_handler(struct smbcli_request *req)
113 {
114         struct composite_context *c = talloc_get_type(req->async.private, 
115                                                       struct composite_context);
116         fsinfo_state_handler(c);
117 }
118
119 static void fsinfo_composite_handler(struct composite_context *creq)
120 {
121         struct composite_context *c = talloc_get_type(creq->async.private_data, 
122                                                       struct composite_context);
123         fsinfo_state_handler(c);
124 }
125
126 /*
127   composite fsinfo call - connects to a tree and queries a file system information
128 */
129 struct composite_context *smb_composite_fsinfo_send(struct smbcli_tree *tree, 
130                                                     struct smb_composite_fsinfo *io)
131 {
132         struct composite_context *c;
133         struct fsinfo_state *state;
134
135         c = talloc_zero(tree, struct composite_context);
136         if (c == NULL) goto failed;
137
138         state = talloc(c, struct fsinfo_state);
139         if (state == NULL) goto failed;
140
141         state->io = io;
142
143         state->connect = talloc(state, struct smb_composite_connect);
144
145         if (state->connect == NULL) goto failed;
146
147         state->connect->in.dest_host    = io->in.dest_host;
148         state->connect->in.dest_ports   = io->in.dest_ports;
149         state->connect->in.called_name  = io->in.called_name;
150         state->connect->in.service      = io->in.service;
151         state->connect->in.service_type = io->in.service_type;
152         state->connect->in.credentials  = io->in.credentials;
153         state->connect->in.fallback_to_anonymous = false;
154         state->connect->in.workgroup    = io->in.workgroup;
155
156         lp_smbcli_options(global_loadparm, &state->connect->in.options);
157
158         c->state = COMPOSITE_STATE_IN_PROGRESS;
159         state->stage = FSINFO_CONNECT;
160         c->event_ctx = talloc_reference(c,  tree->session->transport->socket->event.ctx);
161         c->private_data = state;
162
163         state->creq = smb_composite_connect_send(state->connect, state,
164                          lp_resolve_context(global_loadparm), c->event_ctx);
165
166         if (state->creq == NULL) goto failed;
167   
168         state->creq->async.private_data = c;
169         state->creq->async.fn = fsinfo_composite_handler;
170   
171         return c;
172 failed:
173         talloc_free(c);
174         return NULL;
175 }
176
177 /*
178   composite fsinfo call - recv side
179 */
180 NTSTATUS smb_composite_fsinfo_recv(struct composite_context *c, TALLOC_CTX *mem_ctx)
181 {
182         NTSTATUS status;
183
184         status = composite_wait(c);
185
186         if (NT_STATUS_IS_OK(status)) {
187                 struct fsinfo_state *state = talloc_get_type(c->private_data, struct fsinfo_state);
188                 talloc_steal(mem_ctx, state->io->out.fsinfo);
189         }
190
191         talloc_free(c);
192         return status;
193 }
194
195
196 /*
197   composite fsinfo call - sync interface
198 */
199 NTSTATUS smb_composite_fsinfo(struct smbcli_tree *tree, 
200                               TALLOC_CTX *mem_ctx,
201                               struct smb_composite_fsinfo *io)
202 {
203         struct composite_context *c = smb_composite_fsinfo_send(tree, io);
204         return smb_composite_fsinfo_recv(c, mem_ctx);
205 }
206