source3/lib/netapi/cm.c

   1 /*
   2  *  Unix SMB/CIFS implementation.
   3  *  NetApi Support
   4  *  Copyright (C) Guenther Deschner 2008
   5  *
   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.
  10  *
  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.
  15  *
  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/>.
  18  */
  19
  20 #include "includes.h"
  21 #include "popt_common.h"
  22
  23 #include "lib/netapi/netapi.h"
  24 #include "lib/netapi/netapi_private.h"
  25 #include "libsmb/libsmb.h"
  26 #include "rpc_client/cli_pipe.h"
  27
  28 /********************************************************************
  29 ********************************************************************/
  30
  31 struct client_ipc_connection {
  32         struct client_ipc_connection *prev, *next;
  33         struct cli_state *cli;
  34         struct client_pipe_connection *pipe_connections;
  35 };
  36
  37 struct client_pipe_connection {
  38         struct client_pipe_connection *prev, *next;
  39         struct rpc_pipe_client *pipe;
  40 };
  41
  42 /********************************************************************
  43 ********************************************************************/
  44
  45 static struct client_ipc_connection *ipc_cm_find(
  46         struct libnetapi_private_ctx *priv_ctx, const char *server_name)
  47 {
  48         struct client_ipc_connection *p;
  49
  50         for (p = priv_ctx->ipc_connections; p; p = p->next) {
  51                 if (strequal(p->cli->desthost, server_name)) {
  52                         return p;
  53                 }
  54         }
  55
  56         return NULL;
  57 }
  58
  59 /********************************************************************
  60 ********************************************************************/
  61
  62 static WERROR libnetapi_open_ipc_connection(struct libnetapi_ctx *ctx,
  63                                             const char *server_name,
  64                                             struct client_ipc_connection **pp)
  65 {
  66         struct libnetapi_private_ctx *priv_ctx;
  67         struct user_auth_info *auth_info = NULL;
  68         struct cli_state *cli_ipc = NULL;
  69         struct client_ipc_connection *p;
  70
  71         if (!ctx || !pp || !server_name) {
  72                 return WERR_INVALID_PARAM;
  73         }
  74
  75         priv_ctx = (struct libnetapi_private_ctx *)ctx->private_data;
  76
  77         p = ipc_cm_find(priv_ctx, server_name);
  78         if (p) {
  79                 *pp = p;
  80                 return WERR_OK;
  81         }
  82
  83         auth_info = user_auth_info_init(ctx);
  84         if (!auth_info) {
  85                 return WERR_NOMEM;
  86         }
  87         auth_info->signing_state = Undefined;
  88         set_cmdline_auth_info_use_kerberos(auth_info, ctx->use_kerberos);
  89         set_cmdline_auth_info_username(auth_info, ctx->username);
  90         if (ctx->password) {
  91                 set_cmdline_auth_info_password(auth_info, ctx->password);
  92         } else {
  93                 set_cmdline_auth_info_getpass(auth_info);
  94         }
  95
  96         if (ctx->username && ctx->username[0] &&
  97             ctx->password && ctx->password[0] &&
  98             ctx->use_kerberos) {
  99                 set_cmdline_auth_info_fallback_after_kerberos(auth_info, true);
 100         }
 101
 102         if (ctx->use_ccache) {
 103                 set_cmdline_auth_info_use_ccache(auth_info, true);
 104         }
 105
 106         cli_ipc = cli_cm_open(ctx, NULL,
 107                                 server_name, "IPC$",
 108                                 auth_info,
 109                                 false, false,
 110                                 PROTOCOL_NT1,
 111                                 0, 0x20);
 112         if (cli_ipc) {
 113                 cli_set_username(cli_ipc, ctx->username);
 114                 cli_set_password(cli_ipc, ctx->password);
 115                 cli_set_domain(cli_ipc, ctx->workgroup);
 116         }
 117         TALLOC_FREE(auth_info);
 118
 119         if (!cli_ipc) {
 120                 libnetapi_set_error_string(ctx,
 121                         "Failed to connect to IPC$ share on %s", server_name);
 122                 return WERR_CAN_NOT_COMPLETE;
 123         }
 124
 125         p = talloc_zero(ctx, struct client_ipc_connection);
 126         if (p == NULL) {
 127                 return WERR_NOMEM;
 128         }
 129
 130         p->cli = cli_ipc;
 131         DLIST_ADD(priv_ctx->ipc_connections, p);
 132
 133         *pp = p;
 134
 135         return WERR_OK;
 136 }
 137
 138 /********************************************************************
 139 ********************************************************************/
 140
 141 WERROR libnetapi_shutdown_cm(struct libnetapi_ctx *ctx)
 142 {
 143         struct libnetapi_private_ctx *priv_ctx =
 144                 (struct libnetapi_private_ctx *)ctx->private_data;
 145         struct client_ipc_connection *p;
 146
 147         for (p = priv_ctx->ipc_connections; p; p = p->next) {
 148                 cli_shutdown(p->cli);
 149         }
 150
 151         return WERR_OK;
 152 }
 153
 154 /********************************************************************
 155 ********************************************************************/
 156
 157 static NTSTATUS pipe_cm_find(struct client_ipc_connection *ipc,
 158                              const struct ndr_syntax_id *interface,
 159                              struct rpc_pipe_client **presult)
 160 {
 161         struct client_pipe_connection *p;
 162
 163         for (p = ipc->pipe_connections; p; p = p->next) {
 164
 165                 if (!rpc_pipe_np_smb_conn(p->pipe)) {
 166                         return NT_STATUS_PIPE_EMPTY;
 167                 }
 168
 169                 if (strequal(ipc->cli->desthost, p->pipe->desthost)
 170                     && ndr_syntax_id_equal(&p->pipe->abstract_syntax,
 171                                            interface)) {
 172                         *presult = p->pipe;
 173                         return NT_STATUS_OK;
 174                 }
 175         }
 176
 177         return NT_STATUS_PIPE_NOT_AVAILABLE;
 178 }
 179
 180 /********************************************************************
 181 ********************************************************************/
 182
 183 static NTSTATUS pipe_cm_connect(TALLOC_CTX *mem_ctx,
 184                                 struct client_ipc_connection *ipc,
 185                                 const struct ndr_syntax_id *interface,
 186                                 struct rpc_pipe_client **presult)
 187 {
 188         struct client_pipe_connection *p;
 189         NTSTATUS status;
 190
 191         p = talloc_zero_array(mem_ctx, struct client_pipe_connection, 1);
 192         if (!p) {
 193                 return NT_STATUS_NO_MEMORY;
 194         }
 195
 196         status = cli_rpc_pipe_open_noauth(ipc->cli, interface, &p->pipe);
 197         if (!NT_STATUS_IS_OK(status)) {
 198                 TALLOC_FREE(p);
 199                 return status;
 200         }
 201
 202         DLIST_ADD(ipc->pipe_connections, p);
 203
 204         *presult = p->pipe;
 205         return NT_STATUS_OK;
 206 }
 207
 208 /********************************************************************
 209 ********************************************************************/
 210
 211 static NTSTATUS pipe_cm_open(TALLOC_CTX *ctx,
 212                              struct client_ipc_connection *ipc,
 213                              const struct ndr_syntax_id *interface,
 214                              struct rpc_pipe_client **presult)
 215 {
 216         if (NT_STATUS_IS_OK(pipe_cm_find(ipc, interface, presult))) {
 217                 return NT_STATUS_OK;
 218         }
 219
 220         return pipe_cm_connect(ctx, ipc, interface, presult);
 221 }
 222
 223 /********************************************************************
 224 ********************************************************************/
 225
 226 WERROR libnetapi_open_pipe(struct libnetapi_ctx *ctx,
 227                            const char *server_name,
 228                            const struct ndr_syntax_id *interface,
 229                            struct rpc_pipe_client **presult)
 230 {
 231         struct rpc_pipe_client *result = NULL;
 232         NTSTATUS status;
 233         WERROR werr;
 234         struct client_ipc_connection *ipc = NULL;
 235
 236         if (!presult) {
 237                 return WERR_INVALID_PARAM;
 238         }
 239
 240         werr = libnetapi_open_ipc_connection(ctx, server_name, &ipc);
 241         if (!W_ERROR_IS_OK(werr)) {
 242                 return werr;
 243         }
 244
 245         status = pipe_cm_open(ctx, ipc, interface, &result);
 246         if (!NT_STATUS_IS_OK(status)) {
 247                 libnetapi_set_error_string(ctx, "failed to open PIPE %s: %s",
 248                         get_pipe_name_from_syntax(talloc_tos(), interface),
 249                         get_friendly_nt_error_msg(status));
 250                 return WERR_DEST_NOT_FOUND;
 251         }
 252
 253         *presult = result;
 254
 255         return WERR_OK;
 256 }
 257
 258 /********************************************************************
 259 ********************************************************************/
 260
 261 WERROR libnetapi_get_binding_handle(struct libnetapi_ctx *ctx,
 262                                     const char *server_name,
 263                                     const struct ndr_syntax_id *interface,
 264                                     struct dcerpc_binding_handle **binding_handle)
 265 {
 266         struct rpc_pipe_client *pipe_cli;
 267         WERROR result;
 268
 269         *binding_handle = NULL;
 270
 271         result = libnetapi_open_pipe(ctx, server_name, interface, &pipe_cli);
 272         if (!W_ERROR_IS_OK(result)) {
 273                 return result;
 274         }
 275
 276         *binding_handle = pipe_cli->binding_handle;
 277
 278         return WERR_OK;
 279 }