source3/rpc_server/rpc_sock_helper.c

   1 /*
   2  *  Unix SMB/CIFS implementation.
   3  *
   4  *  RPC Socket Helper
   5  *
   6  *  Copyright (c) 2011      Andreas Schneider <asn@samba.org>
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 3 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, see <http://www.gnu.org/licenses/>.
  20  */
  21
  22 #include "includes.h"
  23 #include "ntdomain.h"
  24
  25 #include "../lib/tsocket/tsocket.h"
  26 #include "librpc/rpc/dcerpc_ep.h"
  27 #include "librpc/rpc/dcesrv_core.h"
  28 #include "rpc_server/rpc_sock_helper.h"
  29 #include "lib/server_prefork.h"
  30 #include "librpc/ndr/ndr_table.h"
  31
  32 #undef DBGC_CLASS
  33 #define DBGC_CLASS DBGC_RPC_SRV
  34
  35 NTSTATUS dcesrv_create_ncacn_ip_tcp_sockets(struct dcesrv_endpoint *e,
  36                                             struct pf_listen_fd *listen_fd,
  37                                             int *listen_fd_size)
  38 {
  39         TALLOC_CTX *tmp_ctx;
  40         NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
  41         uint16_t port = 0;
  42         char port_str[6];
  43         const char *endpoint = NULL;
  44
  45         tmp_ctx = talloc_stackframe();
  46         if (tmp_ctx == NULL) {
  47                 return NT_STATUS_NO_MEMORY;
  48         }
  49
  50         endpoint = dcerpc_binding_get_string_option(e->ep_description,
  51                                                     "endpoint");
  52         if (endpoint != NULL) {
  53                 port = atoi(endpoint);
  54         }
  55
  56         if (lp_interfaces() && lp_bind_interfaces_only()) {
  57                 uint32_t num_ifs = iface_count();
  58                 uint32_t i;
  59
  60                 /*
  61                  * We have been given an interfaces line, and been told to only
  62                  * bind to those interfaces. Create a socket per interface and
  63                  * bind to only these.
  64                  */
  65
  66                 /* Now open a listen socket for each of the interfaces. */
  67                 for (i = 0; i < num_ifs; i++) {
  68                         const struct sockaddr_storage *ifss =
  69                                         iface_n_sockaddr_storage(i);
  70                         int fd = -1;
  71
  72                         status = dcesrv_create_ncacn_ip_tcp_socket(ifss,
  73                                                                    &port,
  74                                                                    &fd);
  75                         if (!NT_STATUS_IS_OK(status)) {
  76                                 goto done;
  77                         }
  78                         listen_fd[*listen_fd_size].fd = fd;
  79                         listen_fd[*listen_fd_size].fd_data = e;
  80                         (*listen_fd_size)++;
  81                 }
  82         } else {
  83                 const char *sock_addr;
  84                 const char *sock_ptr;
  85                 char *sock_tok;
  86
  87 #ifdef HAVE_IPV6
  88                 sock_addr = "::,0.0.0.0";
  89 #else
  90                 sock_addr = "0.0.0.0";
  91 #endif
  92
  93                 for (sock_ptr = sock_addr;
  94                      next_token_talloc(talloc_tos(), &sock_ptr, &sock_tok, " \t,");
  95                     ) {
  96                         struct sockaddr_storage ss;
  97                         int fd = -1;
  98
  99                         /* open an incoming socket */
 100                         if (!interpret_string_addr(&ss,
 101                                                    sock_tok,
 102                                                    AI_NUMERICHOST|AI_PASSIVE)) {
 103                                 continue;
 104                         }
 105
 106                         status = dcesrv_create_ncacn_ip_tcp_socket(&ss,
 107                                                                    &port,
 108                                                                    &fd);
 109                         if (!NT_STATUS_IS_OK(status)) {
 110                                 goto done;
 111                         }
 112                         listen_fd[*listen_fd_size].fd = fd;
 113                         listen_fd[*listen_fd_size].fd_data = e;
 114                         (*listen_fd_size)++;
 115                 }
 116         }
 117
 118         /* Set the port in the endpoint */
 119         snprintf(port_str, sizeof(port_str), "%u", port);
 120
 121         status = dcerpc_binding_set_string_option(e->ep_description,
 122                                                   "endpoint", port_str);
 123         if (!NT_STATUS_IS_OK(status)) {
 124                 DBG_ERR("Failed to set binding endpoint '%s': %s\n",
 125                         port_str, nt_errstr(status));
 126                 goto done;
 127         }
 128
 129         status = NT_STATUS_OK;
 130 done:
 131         talloc_free(tmp_ctx);
 132         return status;
 133 }
 134
 135 NTSTATUS dcesrv_setup_ncacn_ip_tcp_sockets(struct tevent_context *ev_ctx,
 136                                            struct messaging_context *msg_ctx,
 137                                            struct dcesrv_context *dce_ctx,
 138                                            struct dcesrv_endpoint *e,
 139                                            dcerpc_ncacn_termination_fn t_fn,
 140                                            void *t_data)
 141 {
 142         TALLOC_CTX *tmp_ctx;
 143         NTSTATUS status;
 144
 145         tmp_ctx = talloc_stackframe();
 146         if (tmp_ctx == NULL) {
 147                 return NT_STATUS_NO_MEMORY;
 148         }
 149
 150         if (lp_interfaces() && lp_bind_interfaces_only()) {
 151                 uint32_t num_ifs = iface_count();
 152                 uint32_t i;
 153
 154                 /*
 155                  * We have been given an interfaces line, and been told to only
 156                  * bind to those interfaces. Create a socket per interface and
 157                  * bind to only these.
 158                  */
 159
 160                 /* Now open a listen socket for each of the interfaces. */
 161                 for (i = 0; i < num_ifs; i++) {
 162                         const struct sockaddr_storage *ifss =
 163                                         iface_n_sockaddr_storage(i);
 164
 165                         status = dcesrv_setup_ncacn_ip_tcp_socket(ev_ctx,
 166                                                                   msg_ctx,
 167                                                                   dce_ctx,
 168                                                                   e,
 169                                                                   ifss,
 170                                                                   t_fn,
 171                                                                   t_data);
 172                         if (!NT_STATUS_IS_OK(status)) {
 173                                 goto done;
 174                         }
 175                 }
 176         } else {
 177                 const char *sock_addr;
 178                 const char *sock_ptr;
 179                 char *sock_tok;
 180
 181 #ifdef HAVE_IPV6
 182                 sock_addr = "::,0.0.0.0";
 183 #else
 184                 sock_addr = "0.0.0.0";
 185 #endif
 186
 187                 for (sock_ptr = sock_addr;
 188                      next_token_talloc(talloc_tos(), &sock_ptr, &sock_tok, " \t,");
 189                     ) {
 190                         struct sockaddr_storage ss;
 191
 192                         /* open an incoming socket */
 193                         if (!interpret_string_addr(&ss,
 194                                                    sock_tok,
 195                                                    AI_NUMERICHOST|AI_PASSIVE)) {
 196                                 continue;
 197                         }
 198
 199                         status = dcesrv_setup_ncacn_ip_tcp_socket(ev_ctx,
 200                                                                   msg_ctx,
 201                                                                   dce_ctx,
 202                                                                   e,
 203                                                                   &ss,
 204                                                                   t_fn,
 205                                                                   t_data);
 206                         if (!NT_STATUS_IS_OK(status)) {
 207                                 goto done;
 208                         }
 209                 }
 210         }
 211
 212         status = NT_STATUS_OK;
 213 done:
 214         talloc_free(tmp_ctx);
 215         return status;
 216 }
 217
 218 /* vim: set ts=8 sw=8 noet cindent syntax=c.doxygen: */