source4/librpc/rpc/dcerpc_connect.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    dcerpc connect functions
   5
   6    Copyright (C) Andrew Tridgell 2003
   7    Copyright (C) Jelmer Vernooij 2004
   8    Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005
   9    Copyright (C) Rafal Szczesniak  2005
  10
  11    This program is free software; you can redistribute it and/or modify
  12    it under the terms of the GNU General Public License as published by
  13    the Free Software Foundation; either version 2 of the License, or
  14    (at your option) any later version.
  15
  16    This program is distributed in the hope that it will be useful,
  17    but WITHOUT ANY WARRANTY; without even the implied warranty of
  18    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19    GNU General Public License for more details.
  20
  21    You should have received a copy of the GNU General Public License
  22    along with this program; if not, write to the Free Software
  23    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  24 */
  25
  26
  27 #include "includes.h"
  28 #include "system/network.h"
  29 #include "librpc/gen_ndr/ndr_epmapper.h"
  30 #include "librpc/gen_ndr/ndr_dcerpc.h"
  31 #include "librpc/gen_ndr/ndr_misc.h"
  32 #include "libcli/raw/libcliraw.h"
  33 #include "libcli/composite/composite.h"
  34 #include "libcli/smb_composite/smb_composite.h"
  35
  36
  37 struct dcerpc_pipe_connect;
  38
  39 struct pipe_np_smb_state {
  40         struct smb_composite_connect conn;
  41         struct smbcli_tree *tree;
  42         struct dcerpc_pipe_connect io;
  43 };
  44
  45
  46 void continue_pipe_open_smb(struct composite_context *ctx)
  47 {
  48         struct composite_context *c = talloc_get_type(ctx->async.private_data,
  49                                                       struct composite_context);
  50         struct pipe_np_smb_state *s = talloc_get_type(c->private_data,
  51                                                       struct pipe_np_smb_state);
  52
  53         c->status = dcerpc_pipe_open_smb_recv(ctx);
  54         if (!NT_STATUS_IS_OK(c->status)) {
  55
  56                 DEBUG(0,("Failed to open pipe %s - %s\n", s->io.pipe_name, nt_errstr(c->status)));
  57                 composite_error(c, c->status);
  58                 return;
  59         }
  60
  61         composite_done(c);
  62 }
  63
  64
  65 void continue_smb_connect(struct composite_context *ctx)
  66 {
  67         struct composite_context *open_ctx;
  68         struct composite_context *c = talloc_get_type(ctx->async.private_data,
  69                                                       struct composite_context);
  70         struct pipe_np_smb_state *s = talloc_get_type(c->private_data,
  71                                                       struct pipe_np_smb_state);
  72
  73         c->status = smb_composite_connect_recv(ctx, c);
  74         if (!NT_STATUS_IS_OK(c->status)) {
  75
  76                 DEBUG(0,("Failed to connect to %s - %s\n", s->io.binding->host, nt_errstr(c->status)));
  77                 composite_error(c, c->status);
  78                 return;
  79         }
  80
  81         s->tree         = s->conn.out.tree;
  82         s->io.pipe_name = s->io.binding->endpoint;
  83
  84         open_ctx = dcerpc_pipe_open_smb_send(s->io.pipe->conn, s->tree, s->io.pipe_name);
  85         if (open_ctx == NULL) {
  86                 composite_error(c, NT_STATUS_NO_MEMORY);
  87                 return;
  88         }
  89
  90         composite_continue(c, open_ctx, continue_pipe_open_smb, c);
  91 }
  92
  93
  94 /* open a rpc connection to a rpc pipe on SMB using the binding
  95    structure to determine the endpoint and options */
  96 struct composite_context *dcerpc_pipe_connect_ncacn_np_smb_send(TALLOC_CTX *tmp_ctx,
  97                                                                 struct dcerpc_pipe_connect *io)
  98 {
  99         struct composite_context *c;
 100         struct pipe_np_smb_state *s;
 101         struct composite_context *conn_req;
 102         struct smb_composite_connect *conn;
 103
 104         c = talloc_zero(tmp_ctx, struct composite_context);
 105         if (c == NULL) return NULL;
 106
 107         s = talloc_zero(c, struct pipe_np_smb_state);
 108         if (s == NULL) {
 109                 composite_error(c, NT_STATUS_NO_MEMORY);
 110                 goto done;
 111         }
 112
 113         c->state = COMPOSITE_STATE_IN_PROGRESS;
 114         c->private_data = s;
 115         c->event_ctx = io->pipe->conn->event_ctx;
 116
 117         s->io  = *io;
 118         conn   = &s->conn;
 119
 120         conn->in.dest_host              = s->io.binding->host;
 121         conn->in.port                   = 0;
 122         conn->in.called_name            = strupper_talloc(tmp_ctx, s->io.binding->host);
 123         conn->in.service                = "IPC$";
 124         conn->in.service_type           = NULL;
 125         conn->in.fallback_to_anonymous  = False;
 126         conn->in.workgroup              = lp_workgroup();
 127
 128         if (s->io.binding->flags & DCERPC_SCHANNEL) {
 129                 struct cli_credentials *anon_creds;
 130
 131                 anon_creds = cli_credentials_init(tmp_ctx);
 132                 if (!anon_creds) {
 133                         composite_error(c, NT_STATUS_NO_MEMORY);
 134                         goto done;
 135                 }
 136
 137                 cli_credentials_set_anonymous(anon_creds);
 138                 cli_credentials_guess(anon_creds);
 139
 140                 s->conn.in.credentials = anon_creds;
 141
 142         } else {
 143                 s->conn.in.credentials = s->io.creds;
 144         }
 145
 146         conn_req = smb_composite_connect_send(conn, s->io.pipe->conn, s->io.pipe->conn->event_ctx);
 147         if (!conn_req) {
 148                 composite_error(c, NT_STATUS_NO_MEMORY);
 149                 goto done;
 150         }
 151
 152         composite_continue(c, conn_req, continue_smb_connect, c);
 153
 154 done:
 155         return c;
 156 }
 157
 158
 159 NTSTATUS dcerpc_pipe_connect_ncacn_np_smb_recv(struct composite_context *c)
 160 {
 161         NTSTATUS status = composite_wait(c);
 162
 163         talloc_free(c);
 164         return status;
 165 }
 166
 167
 168 NTSTATUS dcerpc_pipe_connect_ncacn_np_smb(TALLOC_CTX *tmp_ctx,
 169                                           struct dcerpc_pipe_connect *io)
 170 {
 171         struct composite_context *c;
 172         c = dcerpc_pipe_connect_ncacn_np_smb_send(tmp_ctx, io);
 173         return dcerpc_pipe_connect_ncacn_np_smb_recv(c);
 174 }