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Viewing changes to source4/libcli/smb_composite/fetchfile.c

  • Committer: Chuck Short
  • Date: 2010-09-28 20:38:39 UTC
  • Revision ID: zulcss@ubuntu.com-20100928203839-pgjulytsi9ue63x1
Initial version

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source4/libcli/smb_composite/fetchfile.c
 
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/* 
 
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   Unix SMB/CIFS implementation.
 
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   Copyright (C) Volker Lendecke 2005
 
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   This program is free software; you can redistribute it and/or modify
 
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   it under the terms of the GNU General Public License as published by
 
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   the Free Software Foundation; either version 3 of the License, or
 
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   (at your option) any later version.
 
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   This program is distributed in the hope that it will be useful,
 
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
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   GNU General Public License for more details.
 
15
   
 
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   You should have received a copy of the GNU General Public License
 
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   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
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*/
 
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/*
 
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  a composite API for loading a whole file into memory
 
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*/
 
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#include "includes.h"
 
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#include "libcli/composite/composite.h"
 
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#include "libcli/smb_composite/smb_composite.h"
 
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#include "libcli/resolve/resolve.h"
 
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enum fetchfile_stage {FETCHFILE_CONNECT,
 
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                      FETCHFILE_READ};
 
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struct fetchfile_state {
 
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        enum fetchfile_stage stage;
 
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        struct smb_composite_fetchfile *io;
 
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        struct composite_context *creq;
 
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        struct smb_composite_connect *connect;
 
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        struct smb_composite_loadfile *loadfile;
 
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};
 
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static void fetchfile_composite_handler(struct composite_context *req);
 
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static NTSTATUS fetchfile_connect(struct composite_context *c,
 
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                                  struct smb_composite_fetchfile *io)
 
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{
 
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        NTSTATUS status;
 
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        struct fetchfile_state *state;
 
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        state = talloc_get_type(c->private_data, struct fetchfile_state);
 
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        status = smb_composite_connect_recv(state->creq, c);
 
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        NT_STATUS_NOT_OK_RETURN(status);
 
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        state->loadfile = talloc(state, struct smb_composite_loadfile);
 
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        NT_STATUS_HAVE_NO_MEMORY(state->loadfile);
 
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        state->loadfile->in.fname = io->in.filename;
 
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        state->creq = smb_composite_loadfile_send(state->connect->out.tree,
 
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                                                 state->loadfile);
 
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        NT_STATUS_HAVE_NO_MEMORY(state->creq);
 
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        state->creq->async.private_data = c;
 
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        state->creq->async.fn = fetchfile_composite_handler;
 
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        state->stage = FETCHFILE_READ;
 
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        return NT_STATUS_OK;
 
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}
 
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static NTSTATUS fetchfile_read(struct composite_context *c,
 
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                               struct smb_composite_fetchfile *io)
 
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{
 
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        NTSTATUS status;
 
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        struct fetchfile_state *state;
 
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        state = talloc_get_type(c->private_data, struct fetchfile_state);
 
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        status = smb_composite_loadfile_recv(state->creq, NULL);
 
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        NT_STATUS_NOT_OK_RETURN(status);
 
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        io->out.data = state->loadfile->out.data;
 
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        io->out.size = state->loadfile->out.size;
 
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        c->state = COMPOSITE_STATE_DONE;
 
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        if (c->async.fn)
 
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                c->async.fn(c);
 
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        return NT_STATUS_OK;
 
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}
 
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static void fetchfile_state_handler(struct composite_context *c)
 
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{
 
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        struct fetchfile_state *state;
 
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        NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
 
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        state = talloc_get_type(c->private_data, struct fetchfile_state);
 
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        /* when this handler is called, the stage indicates what
 
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           call has just finished */
 
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        switch (state->stage) {
 
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        case FETCHFILE_CONNECT:
 
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                status = fetchfile_connect(c, state->io);
 
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                break;
 
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        case FETCHFILE_READ:
 
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                status = fetchfile_read(c, state->io);
 
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                break;
 
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        }
 
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        if (!NT_STATUS_IS_OK(status)) {
 
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                c->status = status;
 
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                c->state = COMPOSITE_STATE_ERROR;
 
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                if (c->async.fn) {
 
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                        c->async.fn(c);
 
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                }
 
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        }
 
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}
 
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static void fetchfile_composite_handler(struct composite_context *creq)
 
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{
 
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        struct composite_context *c = talloc_get_type(creq->async.private_data, 
 
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                                                      struct composite_context);
 
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        fetchfile_state_handler(c);
 
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}
 
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struct composite_context *smb_composite_fetchfile_send(struct smb_composite_fetchfile *io,
 
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                                                       struct tevent_context *event_ctx)
 
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{
 
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        struct composite_context *c;
 
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        struct fetchfile_state *state;
 
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        c = talloc_zero(NULL, struct composite_context);
 
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        if (c == NULL) goto failed;
 
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        state = talloc(c, struct fetchfile_state);
 
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        if (state == NULL) goto failed;
 
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        state->connect = talloc(state, struct smb_composite_connect);
 
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        if (state->connect == NULL) goto failed;
 
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        state->io = io;
 
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        state->connect->in.dest_host    = io->in.dest_host;
 
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        state->connect->in.dest_ports   = io->in.ports;
 
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        state->connect->in.socket_options = io->in.socket_options;
 
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        state->connect->in.called_name  = io->in.called_name;
 
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        state->connect->in.service      = io->in.service;
 
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        state->connect->in.service_type = io->in.service_type;
 
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        state->connect->in.credentials  = io->in.credentials;
 
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        state->connect->in.fallback_to_anonymous = false;
 
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        state->connect->in.workgroup    = io->in.workgroup;
 
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        state->connect->in.gensec_settings = io->in.gensec_settings;
 
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        state->connect->in.iconv_convenience = io->in.iconv_convenience;
 
150
 
 
151
        state->connect->in.options      = io->in.options;
 
152
        state->connect->in.session_options = io->in.session_options;
 
153
 
 
154
        state->creq = smb_composite_connect_send(state->connect, state, 
 
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                                                 io->in.resolve_ctx, event_ctx);
 
156
        if (state->creq == NULL) goto failed;
 
157
 
 
158
        state->creq->async.private_data = c;
 
159
        state->creq->async.fn = fetchfile_composite_handler;
 
160
 
 
161
        c->state = COMPOSITE_STATE_IN_PROGRESS;
 
162
        state->stage = FETCHFILE_CONNECT;
 
163
        c->private_data = state;
 
164
 
 
165
        return c;
 
166
 failed:
 
167
        talloc_free(c);
 
168
        return NULL;
 
169
}
 
170
 
 
171
NTSTATUS smb_composite_fetchfile_recv(struct composite_context *c,
 
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                                      TALLOC_CTX *mem_ctx)
 
173
{
 
174
        NTSTATUS status;
 
175
 
 
176
        status = composite_wait(c);
 
177
 
 
178
        if (NT_STATUS_IS_OK(status)) {
 
179
                struct fetchfile_state *state = talloc_get_type(c->private_data, struct fetchfile_state);
 
180
                talloc_steal(mem_ctx, state->io->out.data);
 
181
        }
 
182
 
 
183
        talloc_free(c);
 
184
        return status;
 
185
}
 
186
 
 
187
NTSTATUS smb_composite_fetchfile(struct smb_composite_fetchfile *io,
 
188
                                 TALLOC_CTX *mem_ctx)
 
189
{
 
190
        struct composite_context *c = smb_composite_fetchfile_send(io, NULL);
 
191
        return smb_composite_fetchfile_recv(c, mem_ctx);
 
192
}