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$",
  59                               false, false,
  60                               PROTOCOL_NT1,
  61                               0, 0x20);
  62         if (!cli_ipc) {
  63                 libnetapi_set_error_string(ctx,
  64                         "Failed to connect to IPC$ share on %s", server_name);
  65                 return WERR_CAN_NOT_COMPLETE;
  66         }
  67
  68         *cli = cli_ipc;
  69
  70         return WERR_OK;
  71 }
  72
  73 /********************************************************************
  74 ********************************************************************/
  75
  76 struct client_pipe_connection {
  77         struct client_pipe_connection *prev, *next;
  78         struct rpc_pipe_client *pipe;
  79         struct cli_state *cli;
  80 };
  81
  82 static struct client_pipe_connection *pipe_connections;
  83
  84 /********************************************************************
  85 ********************************************************************/
  86
  87 WERROR libnetapi_shutdown_cm(struct libnetapi_ctx *ctx)
  88 {
  89         struct client_pipe_connection *p;
  90
  91         for (p = pipe_connections; p; p = p->next) {
  92                 cli_shutdown(p->cli);
  93         }
  94
  95         return WERR_OK;
  96 }
  97
  98 /********************************************************************
  99 ********************************************************************/
 100
 101 static NTSTATUS pipe_cm_find(struct cli_state *cli,
 102                              const struct ndr_syntax_id *interface,
 103                              struct rpc_pipe_client **presult)
 104 {
 105         struct client_pipe_connection *p;
 106
 107         for (p = pipe_connections; p; p = p->next) {
 108
 109                 if (!rpc_pipe_np_smb_conn(p->pipe)) {
 110                         return NT_STATUS_PIPE_EMPTY;
 111                 }
 112
 113                 if (strequal(cli->desthost, p->pipe->desthost)
 114                     && ndr_syntax_id_equal(&p->pipe->abstract_syntax,
 115                                            interface)) {
 116                         *presult = p->pipe;
 117                         return NT_STATUS_OK;
 118                 }
 119         }
 120
 121         return NT_STATUS_PIPE_NOT_AVAILABLE;
 122 }
 123
 124 /********************************************************************
 125 ********************************************************************/
 126
 127 static NTSTATUS pipe_cm_connect(TALLOC_CTX *mem_ctx,
 128                                 struct cli_state *cli,
 129                                 const struct ndr_syntax_id *interface,
 130                                 struct rpc_pipe_client **presult)
 131 {
 132         struct client_pipe_connection *p;
 133         NTSTATUS status;
 134
 135         p = TALLOC_ZERO_ARRAY(mem_ctx, struct client_pipe_connection, 1);
 136         if (!p) {
 137                 return NT_STATUS_NO_MEMORY;
 138         }
 139
 140         status = cli_rpc_pipe_open_noauth(cli, interface, &p->pipe);
 141         if (!NT_STATUS_IS_OK(status)) {
 142                 TALLOC_FREE(p);
 143                 return status;
 144         }
 145
 146         p->cli = cli;
 147         DLIST_ADD(pipe_connections, p);
 148
 149         *presult = p->pipe;
 150         return NT_STATUS_OK;
 151 }
 152
 153 /********************************************************************
 154 ********************************************************************/
 155
 156 static NTSTATUS pipe_cm_open(TALLOC_CTX *ctx,
 157                              struct cli_state *cli,
 158                              const struct ndr_syntax_id *interface,
 159                              struct rpc_pipe_client **presult)
 160 {
 161         if (NT_STATUS_IS_OK(pipe_cm_find(cli, interface, presult))) {
 162                 return NT_STATUS_OK;
 163         }
 164
 165         return pipe_cm_connect(ctx, cli, interface, presult);
 166 }
 167
 168 /********************************************************************
 169 ********************************************************************/
 170
 171 WERROR libnetapi_open_pipe(struct libnetapi_ctx *ctx,
 172                            const char *server_name,
 173                            const struct ndr_syntax_id *interface,
 174                            struct rpc_pipe_client **presult)
 175 {
 176         struct rpc_pipe_client *result = NULL;
 177         NTSTATUS status;
 178         WERROR werr;
 179         struct cli_state *cli = NULL;
 180
 181         if (!presult) {
 182                 return WERR_INVALID_PARAM;
 183         }
 184
 185         werr = libnetapi_open_ipc_connection(ctx, server_name, &cli);
 186         if (!W_ERROR_IS_OK(werr)) {
 187                 return werr;
 188         }
 189
 190         status = pipe_cm_open(ctx, cli, interface, &result);
 191         if (!NT_STATUS_IS_OK(status)) {
 192                 libnetapi_set_error_string(ctx, "failed to open PIPE %s: %s",
 193                         get_pipe_name_from_iface(interface),
 194                         get_friendly_nt_error_msg(status));
 195                 return WERR_DEST_NOT_FOUND;
 196         }
 197
 198         *presult = result;
 199
 200         return WERR_OK;
 201 }