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