2 Unix SMB/CIFS implementation.
4 Copyright (C) Volker Lendecke 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 3 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, see <http://www.gnu.org/licenses/>.
20 a composite API for loading a whole file into memory
24 #include "libcli/composite/composite.h"
25 #include "libcli/smb_composite/smb_composite.h"
27 enum fetchfile_stage {FETCHFILE_CONNECT,
30 struct fetchfile_state {
31 enum fetchfile_stage stage;
32 struct smb_composite_fetchfile *io;
33 struct composite_context *creq;
34 struct smb_composite_connect *connect;
35 struct smb_composite_loadfile *loadfile;
38 static void fetchfile_composite_handler(struct composite_context *req);
40 static NTSTATUS fetchfile_connect(struct composite_context *c,
41 struct smb_composite_fetchfile *io)
44 struct fetchfile_state *state;
45 state = talloc_get_type(c->private_data, struct fetchfile_state);
47 status = smb_composite_connect_recv(state->creq, c);
48 NT_STATUS_NOT_OK_RETURN(status);
50 state->loadfile = talloc(state, struct smb_composite_loadfile);
51 NT_STATUS_HAVE_NO_MEMORY(state->loadfile);
53 state->loadfile->in.fname = io->in.filename;
55 state->creq = smb_composite_loadfile_send(state->connect->out.tree,
57 NT_STATUS_HAVE_NO_MEMORY(state->creq);
59 state->creq->async.private_data = c;
60 state->creq->async.fn = fetchfile_composite_handler;
62 state->stage = FETCHFILE_READ;
63 c->event_ctx = talloc_reference(c, state->creq->event_ctx);
68 static NTSTATUS fetchfile_read(struct composite_context *c,
69 struct smb_composite_fetchfile *io)
72 struct fetchfile_state *state;
73 state = talloc_get_type(c->private_data, struct fetchfile_state);
75 status = smb_composite_loadfile_recv(state->creq, NULL);
76 NT_STATUS_NOT_OK_RETURN(status);
78 io->out.data = state->loadfile->out.data;
79 io->out.size = state->loadfile->out.size;
81 c->state = COMPOSITE_STATE_DONE;
88 static void fetchfile_state_handler(struct composite_context *c)
90 struct fetchfile_state *state;
91 NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
93 state = talloc_get_type(c->private_data, struct fetchfile_state);
95 /* when this handler is called, the stage indicates what
96 call has just finished */
97 switch (state->stage) {
98 case FETCHFILE_CONNECT:
99 status = fetchfile_connect(c, state->io);
102 status = fetchfile_read(c, state->io);
106 if (!NT_STATUS_IS_OK(status)) {
108 c->state = COMPOSITE_STATE_ERROR;
115 static void fetchfile_composite_handler(struct composite_context *creq)
117 struct composite_context *c = talloc_get_type(creq->async.private_data,
118 struct composite_context);
119 fetchfile_state_handler(c);
122 struct composite_context *smb_composite_fetchfile_send(struct smb_composite_fetchfile *io,
123 struct event_context *event_ctx)
125 struct composite_context *c;
126 struct fetchfile_state *state;
128 c = talloc_zero(NULL, struct composite_context);
129 if (c == NULL) goto failed;
131 state = talloc(c, struct fetchfile_state);
132 if (state == NULL) goto failed;
134 state->connect = talloc(state, struct smb_composite_connect);
135 if (state->connect == NULL) goto failed;
139 state->connect->in.dest_host = io->in.dest_host;
140 state->connect->in.port = io->in.port;
141 state->connect->in.called_name = io->in.called_name;
142 state->connect->in.service = io->in.service;
143 state->connect->in.service_type = io->in.service_type;
144 state->connect->in.credentials = io->in.credentials;
145 state->connect->in.fallback_to_anonymous = False;
146 state->connect->in.workgroup = io->in.workgroup;
148 state->creq = smb_composite_connect_send(state->connect, state, event_ctx);
149 if (state->creq == NULL) goto failed;
151 state->creq->async.private_data = c;
152 state->creq->async.fn = fetchfile_composite_handler;
154 c->state = COMPOSITE_STATE_IN_PROGRESS;
155 state->stage = FETCHFILE_CONNECT;
156 c->event_ctx = talloc_reference(c, state->creq->event_ctx);
157 c->private_data = state;
165 NTSTATUS smb_composite_fetchfile_recv(struct composite_context *c,
170 status = composite_wait(c);
172 if (NT_STATUS_IS_OK(status)) {
173 struct fetchfile_state *state = talloc_get_type(c->private_data, struct fetchfile_state);
174 talloc_steal(mem_ctx, state->io->out.data);
181 NTSTATUS smb_composite_fetchfile(struct smb_composite_fetchfile *io,
184 struct composite_context *c = smb_composite_fetchfile_send(io, NULL);
185 return smb_composite_fetchfile_recv(c, mem_ctx);