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 user_auth_info *auth_info = NULL;
  33         struct cli_state *cli_ipc = NULL;
  34
  35         if (!ctx || !cli || !server_name) {
  36                 return WERR_INVALID_PARAM;
  37         }
  38
  39         auth_info = user_auth_info_init(NULL);
  40         if (!auth_info) {
  41                 return WERR_NOMEM;
  42         }
  43         auth_info->signing_state = Undefined;
  44         set_cmdline_auth_info_use_kerberos(auth_info, ctx->use_kerberos);
  45         set_cmdline_auth_info_username(auth_info, ctx->username);
  46         if (ctx->password) {
  47                 set_cmdline_auth_info_password(auth_info, ctx->password);
  48         } else {
  49                 set_cmdline_auth_info_getpass(auth_info);
  50         }
  51
  52         if (ctx->username && ctx->username[0] &&
  53             ctx->password && ctx->password[0] &&
  54             ctx->use_kerberos) {
  55                 set_cmdline_auth_info_fallback_after_kerberos(auth_info, true);
  56         }
  57
  58         if (ctx->use_ccache) {
  59                 set_cmdline_auth_info_use_ccache(auth_info, true);
  60         }
  61
  62         cli_ipc = cli_cm_open(ctx, NULL,
  63                                 server_name, "IPC$",
  64                                 auth_info,
  65                                 false, false,
  66                                 PROTOCOL_NT1,
  67                                 0, 0x20);
  68         if (cli_ipc) {
  69                 cli_set_username(cli_ipc, ctx->username);
  70                 cli_set_password(cli_ipc, ctx->password);
  71                 cli_set_domain(cli_ipc, ctx->workgroup);
  72         }
  73         TALLOC_FREE(auth_info);
  74
  75         if (!cli_ipc) {
  76                 libnetapi_set_error_string(ctx,
  77                         "Failed to connect to IPC$ share on %s", server_name);
  78                 return WERR_CAN_NOT_COMPLETE;
  79         }
  80
  81         *cli = cli_ipc;
  82
  83         return WERR_OK;
  84 }
  85
  86 /********************************************************************
  87 ********************************************************************/
  88
  89 struct client_pipe_connection {
  90         struct client_pipe_connection *prev, *next;
  91         struct rpc_pipe_client *pipe;
  92         struct cli_state *cli;
  93 };
  94
  95 static struct client_pipe_connection *pipe_connections;
  96
  97 /********************************************************************
  98 ********************************************************************/
  99
 100 WERROR libnetapi_shutdown_cm(struct libnetapi_ctx *ctx)
 101 {
 102         struct client_pipe_connection *p;
 103
 104         for (p = pipe_connections; p; p = p->next) {
 105                 cli_shutdown(p->cli);
 106         }
 107
 108         return WERR_OK;
 109 }
 110
 111 /********************************************************************
 112 ********************************************************************/
 113
 114 static NTSTATUS pipe_cm_find(struct cli_state *cli,
 115                              const struct ndr_syntax_id *interface,
 116                              struct rpc_pipe_client **presult)
 117 {
 118         struct client_pipe_connection *p;
 119
 120         for (p = pipe_connections; p; p = p->next) {
 121
 122                 if (!rpc_pipe_np_smb_conn(p->pipe)) {
 123                         return NT_STATUS_PIPE_EMPTY;
 124                 }
 125
 126                 if (strequal(cli->desthost, p->pipe->desthost)
 127                     && ndr_syntax_id_equal(&p->pipe->abstract_syntax,
 128                                            interface)) {
 129                         *presult = p->pipe;
 130                         return NT_STATUS_OK;
 131                 }
 132         }
 133
 134         return NT_STATUS_PIPE_NOT_AVAILABLE;
 135 }
 136
 137 /********************************************************************
 138 ********************************************************************/
 139
 140 static NTSTATUS pipe_cm_connect(TALLOC_CTX *mem_ctx,
 141                                 struct cli_state *cli,
 142                                 const struct ndr_syntax_id *interface,
 143                                 struct rpc_pipe_client **presult)
 144 {
 145         struct client_pipe_connection *p;
 146         NTSTATUS status;
 147
 148         p = TALLOC_ZERO_ARRAY(mem_ctx, struct client_pipe_connection, 1);
 149         if (!p) {
 150                 return NT_STATUS_NO_MEMORY;
 151         }
 152
 153         status = cli_rpc_pipe_open_noauth(cli, interface, &p->pipe);
 154         if (!NT_STATUS_IS_OK(status)) {
 155                 TALLOC_FREE(p);
 156                 return status;
 157         }
 158
 159         p->cli = cli;
 160         DLIST_ADD(pipe_connections, p);
 161
 162         *presult = p->pipe;
 163         return NT_STATUS_OK;
 164 }
 165
 166 /********************************************************************
 167 ********************************************************************/
 168
 169 static NTSTATUS pipe_cm_open(TALLOC_CTX *ctx,
 170                              struct cli_state *cli,
 171                              const struct ndr_syntax_id *interface,
 172                              struct rpc_pipe_client **presult)
 173 {
 174         if (NT_STATUS_IS_OK(pipe_cm_find(cli, interface, presult))) {
 175                 return NT_STATUS_OK;
 176         }
 177
 178         return pipe_cm_connect(ctx, cli, interface, presult);
 179 }
 180
 181 /********************************************************************
 182 ********************************************************************/
 183
 184 WERROR libnetapi_open_pipe(struct libnetapi_ctx *ctx,
 185                            const char *server_name,
 186                            const struct ndr_syntax_id *interface,
 187                            struct rpc_pipe_client **presult)
 188 {
 189         struct rpc_pipe_client *result = NULL;
 190         NTSTATUS status;
 191         WERROR werr;
 192         struct cli_state *cli = NULL;
 193
 194         if (!presult) {
 195                 return WERR_INVALID_PARAM;
 196         }
 197
 198         werr = libnetapi_open_ipc_connection(ctx, server_name, &cli);
 199         if (!W_ERROR_IS_OK(werr)) {
 200                 return werr;
 201         }
 202
 203         status = pipe_cm_open(ctx, cli, interface, &result);
 204         if (!NT_STATUS_IS_OK(status)) {
 205                 libnetapi_set_error_string(ctx, "failed to open PIPE %s: %s",
 206                         get_pipe_name_from_syntax(talloc_tos(), interface),
 207                         get_friendly_nt_error_msg(status));
 208                 return WERR_DEST_NOT_FOUND;
 209         }
 210
 211         *presult = result;
 212
 213         return WERR_OK;
 214 }