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
  22 #include "lib/netapi/netapi.h"
  23 #include "lib/netapi/netapi_private.h"
  24
  25 /********************************************************************
  26 ********************************************************************/
  27
  28 static WERROR libnetapi_open_ipc_connection(struct libnetapi_ctx *ctx,
  29                                             const char *server_name,
  30                                             struct cli_state **cli)
  31 {
  32         struct cli_state *cli_ipc = NULL;
  33
  34         if (!ctx || !cli || !server_name) {
  35                 return WERR_INVALID_PARAM;
  36         }
  37
  38         cli_cm_set_signing_state(Undefined);
  39
  40         if (ctx->use_kerberos) {
  41                 cli_cm_set_use_kerberos();
  42         }
  43
  44         if (ctx->password) {
  45                 cli_cm_set_password(ctx->password);
  46         }
  47         if (ctx->username) {
  48                 cli_cm_set_username(ctx->username);
  49         }
  50
  51         if (ctx->username && ctx->username[0] &&
  52             ctx->password && ctx->password[0] &&
  53             ctx->use_kerberos) {
  54                 cli_cm_set_fallback_after_kerberos();
  55         }
  56
  57         cli_ipc = cli_cm_open(ctx, NULL,
  58                               server_name, "IPC$",
  59                               false, false);
  60         if (!cli_ipc) {
  61                 libnetapi_set_error_string(ctx,
  62                         "Failed to connect to IPC$ share on %s", server_name);
  63                 return WERR_CAN_NOT_COMPLETE;
  64         }
  65
  66         *cli = cli_ipc;
  67
  68         return WERR_OK;
  69 }
  70
  71 /********************************************************************
  72 ********************************************************************/
  73
  74 WERROR libnetapi_shutdown_cm(struct libnetapi_ctx *ctx)
  75 {
  76         cli_cm_shutdown();
  77
  78         return WERR_OK;
  79 }
  80
  81 /********************************************************************
  82 ********************************************************************/
  83
  84 struct client_pipe_connection {
  85         struct client_pipe_connection *prev, *next;
  86         struct rpc_pipe_client *pipe;
  87 };
  88
  89 static struct client_pipe_connection *pipe_connections;
  90
  91 /********************************************************************
  92 ********************************************************************/
  93
  94 static NTSTATUS pipe_cm_find(struct cli_state *cli,
  95                              const struct ndr_syntax_id *interface,
  96                              struct rpc_pipe_client **presult)
  97 {
  98         struct client_pipe_connection *p;
  99
 100         for (p = pipe_connections; p; p = p->next) {
 101
 102                 if (!rpc_pipe_np_smb_conn(p->pipe)) {
 103                         return NT_STATUS_PIPE_EMPTY;
 104                 }
 105
 106                 if (strequal(cli->desthost, p->pipe->desthost)
 107                     && ndr_syntax_id_equal(&p->pipe->abstract_syntax,
 108                                            interface)) {
 109                         *presult = p->pipe;
 110                         return NT_STATUS_OK;
 111                 }
 112         }
 113
 114         return NT_STATUS_PIPE_NOT_AVAILABLE;
 115 }
 116
 117 /********************************************************************
 118 ********************************************************************/
 119
 120 static NTSTATUS pipe_cm_connect(TALLOC_CTX *mem_ctx,
 121                                 struct cli_state *cli,
 122                                 const struct ndr_syntax_id *interface,
 123                                 struct rpc_pipe_client **presult)
 124 {
 125         struct client_pipe_connection *p;
 126         NTSTATUS status;
 127
 128         p = TALLOC_ZERO_ARRAY(mem_ctx, struct client_pipe_connection, 1);
 129         if (!p) {
 130                 return NT_STATUS_NO_MEMORY;
 131         }
 132
 133         status = cli_rpc_pipe_open_noauth(cli, interface, &p->pipe);
 134         if (!NT_STATUS_IS_OK(status)) {
 135                 TALLOC_FREE(p);
 136                 return status;
 137         }
 138
 139         DLIST_ADD(pipe_connections, p);
 140
 141         *presult = p->pipe;
 142         return NT_STATUS_OK;
 143 }
 144
 145 /********************************************************************
 146 ********************************************************************/
 147
 148 static NTSTATUS pipe_cm_open(TALLOC_CTX *ctx,
 149                              struct cli_state *cli,
 150                              const struct ndr_syntax_id *interface,
 151                              struct rpc_pipe_client **presult)
 152 {
 153         if (NT_STATUS_IS_OK(pipe_cm_find(cli, interface, presult))) {
 154                 return NT_STATUS_OK;
 155         }
 156
 157         return pipe_cm_connect(ctx, cli, interface, presult);
 158 }
 159
 160 /********************************************************************
 161 ********************************************************************/
 162
 163 WERROR libnetapi_open_pipe(struct libnetapi_ctx *ctx,
 164                            const char *server_name,
 165                            const struct ndr_syntax_id *interface,
 166                            struct cli_state **pcli,
 167                            struct rpc_pipe_client **presult)
 168 {
 169         struct rpc_pipe_client *result = NULL;
 170         NTSTATUS status;
 171         WERROR werr;
 172         struct cli_state *cli = NULL;
 173
 174         if (!presult) {
 175                 return WERR_INVALID_PARAM;
 176         }
 177
 178         werr = libnetapi_open_ipc_connection(ctx, server_name, &cli);
 179         if (!W_ERROR_IS_OK(werr)) {
 180                 return werr;
 181         }
 182
 183         status = pipe_cm_open(ctx, cli, interface, &result);
 184         if (!NT_STATUS_IS_OK(status)) {
 185                 libnetapi_set_error_string(ctx, "failed to open PIPE %s: %s",
 186                         cli_get_pipe_name_from_iface(debug_ctx(), cli,
 187                                                      interface),
 188                         get_friendly_nt_error_msg(status));
 189                 return WERR_DEST_NOT_FOUND;
 190         }
 191
 192         *presult = result;
 193         *pcli = cli;
 194
 195         return WERR_OK;
 196 }
 197
 198