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 "rpc_server/rpc_server.h"
  28 #include "rpc_server/rpc_sock_helper.h"
  29
  30 NTSTATUS rpc_create_tcpip_sockets(const struct ndr_interface_table *iface,
  31                                   struct dcerpc_binding_vector *bvec,
  32                                   uint16_t port,
  33                                   int *listen_fd,
  34                                   int *listen_fd_size)
  35 {
  36         uint32_t num_ifs = iface_count();
  37         uint32_t i;
  38         uint16_t p = port;
  39         TALLOC_CTX *tmp_ctx;
  40         NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
  41         int rc;
  42
  43         tmp_ctx = talloc_stackframe();
  44         if (tmp_ctx == NULL) {
  45                 return NT_STATUS_NO_MEMORY;
  46         }
  47
  48         if (lp_interfaces() && lp_bind_interfaces_only()) {
  49                 /*
  50                  * We have been given an interfaces line, and been told to only
  51                  * bind to those interfaces. Create a socket per interface and
  52                  * bind to only these.
  53                  */
  54
  55                 /* Now open a listen socket for each of the interfaces. */
  56                 for (i = 0; i < num_ifs; i++) {
  57                         const struct sockaddr_storage *ifss =
  58                                         iface_n_sockaddr_storage(i);
  59                         struct tsocket_address *bind_addr;
  60                         const char *addr;
  61                         int fd;
  62
  63                         fd = create_tcpip_socket(ifss, &p);
  64                         if (fd < 0 || p == 0) {
  65                                 status = NT_STATUS_UNSUCCESSFUL;
  66                                 if (fd != -1) {
  67                                         close(fd);
  68                                 }
  69                                 goto done;
  70                         }
  71                         listen_fd[*listen_fd_size] = fd;
  72                         (*listen_fd_size)++;
  73
  74                         if (bvec != NULL) {
  75                                 rc = tsocket_address_bsd_from_sockaddr(tmp_ctx,
  76                                                                        (const struct sockaddr *)ifss,
  77                                                                        sizeof(struct sockaddr_storage),
  78                                                                        &bind_addr);
  79                                 if (rc < 0) {
  80                                         close(fd);
  81                                         status = NT_STATUS_NO_MEMORY;
  82                                         goto done;
  83                                 }
  84
  85                                 addr = tsocket_address_inet_addr_string(bind_addr,
  86                                                                         tmp_ctx);
  87                                 if (addr == NULL) {
  88                                         close(fd);
  89                                         status = NT_STATUS_NO_MEMORY;
  90                                         goto done;
  91                                 }
  92
  93                                 status = dcerpc_binding_vector_add_port(iface,
  94                                                                         bvec,
  95                                                                         addr,
  96                                                                         p);
  97                                 if (!NT_STATUS_IS_OK(status)) {
  98                                         close(fd);
  99                                         goto done;
 100                                 }
 101                         }
 102                 }
 103         } else {
 104                 const char *sock_addr;
 105                 const char *sock_ptr;
 106                 char *sock_tok;
 107
 108 #if HAVE_IPV6
 109                 sock_addr = "::,0.0.0.0";
 110 #else
 111                 sock_addr = "0.0.0.0";
 112 #endif
 113
 114                 for (sock_ptr = sock_addr;
 115                      next_token_talloc(talloc_tos(), &sock_ptr, &sock_tok, " \t,");
 116                     ) {
 117                         struct sockaddr_storage ss;
 118                         int fd;
 119
 120                         /* open an incoming socket */
 121                         if (!interpret_string_addr(&ss,
 122                                                    sock_tok,
 123                                                    AI_NUMERICHOST|AI_PASSIVE)) {
 124                                 continue;
 125                         }
 126
 127                         fd = create_tcpip_socket(&ss, &p);
 128                         if (fd < 0 || p == 0) {
 129                                 status = NT_STATUS_UNSUCCESSFUL;
 130                                 if (fd != -1) {
 131                                         close(fd);
 132                                 }
 133                                 goto done;
 134                         }
 135                         listen_fd[*listen_fd_size] = fd;
 136                         (*listen_fd_size)++;
 137
 138                         if (bvec != NULL) {
 139                                 status = dcerpc_binding_vector_add_port(iface,
 140                                                                         bvec,
 141                                                                         sock_tok,
 142                                                                         p);
 143                                 if (!NT_STATUS_IS_OK(status)) {
 144                                         close(fd);
 145                                         goto done;
 146                                 }
 147                         }
 148                 }
 149         }
 150
 151         status = NT_STATUS_OK;
 152 done:
 153         talloc_free(tmp_ctx);
 154         return status;
 155 }
 156
 157 NTSTATUS rpc_setup_tcpip_sockets(struct tevent_context *ev_ctx,
 158                                  struct messaging_context *msg_ctx,
 159                                  const struct ndr_interface_table *iface,
 160                                  struct dcerpc_binding_vector *bvec,
 161                                  uint16_t port)
 162 {
 163         uint32_t num_ifs = iface_count();
 164         uint32_t i;
 165         uint16_t p = 0;
 166         TALLOC_CTX *tmp_ctx;
 167         NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
 168         int rc;
 169
 170         tmp_ctx = talloc_stackframe();
 171         if (tmp_ctx == NULL) {
 172                 return NT_STATUS_NO_MEMORY;
 173         }
 174
 175         if (lp_interfaces() && lp_bind_interfaces_only()) {
 176                 /*
 177                  * We have been given an interfaces line, and been told to only
 178                  * bind to those interfaces. Create a socket per interface and
 179                  * bind to only these.
 180                  */
 181
 182                 /* Now open a listen socket for each of the interfaces. */
 183                 for (i = 0; i < num_ifs; i++) {
 184                         const struct sockaddr_storage *ifss =
 185                                         iface_n_sockaddr_storage(i);
 186                         struct tsocket_address *bind_addr;
 187                         const char *addr;
 188
 189                         p = setup_dcerpc_ncacn_tcpip_socket(ev_ctx,
 190                                                             msg_ctx,
 191                                                             ifss,
 192                                                             port);
 193                         if (p == 0) {
 194                                 status = NT_STATUS_UNSUCCESSFUL;
 195                                 goto done;
 196                         }
 197
 198                         if (bvec != NULL) {
 199                                 rc = tsocket_address_bsd_from_sockaddr(tmp_ctx,
 200                                                                        (const struct sockaddr*)ifss,
 201                                                                        sizeof(struct sockaddr_storage),
 202                                                                        &bind_addr);
 203                                 if (rc < 0) {
 204                                         status = NT_STATUS_NO_MEMORY;
 205                                         goto done;
 206                                 }
 207
 208                                 addr = tsocket_address_inet_addr_string(bind_addr,
 209                                                                         tmp_ctx);
 210                                 if (addr == NULL) {
 211                                         status = NT_STATUS_NO_MEMORY;
 212                                         goto done;
 213                                 }
 214
 215                                 status = dcerpc_binding_vector_add_port(iface,
 216                                                                         bvec,
 217                                                                         addr,
 218                                                                         p);
 219                                 if (!NT_STATUS_IS_OK(status)) {
 220                                         goto done;
 221                                 }
 222                         }
 223                 }
 224         } else {
 225                 const char *sock_addr;
 226                 const char *sock_ptr;
 227                 char *sock_tok;
 228
 229 #if HAVE_IPV6
 230                 sock_addr = "::,0.0.0.0";
 231 #else
 232                 sock_addr = "0.0.0.0";
 233 #endif
 234
 235                 for (sock_ptr = sock_addr;
 236                      next_token_talloc(talloc_tos(), &sock_ptr, &sock_tok, " \t,");
 237                     ) {
 238                         struct sockaddr_storage ss;
 239
 240                         /* open an incoming socket */
 241                         if (!interpret_string_addr(&ss,
 242                                                    sock_tok,
 243                                                    AI_NUMERICHOST|AI_PASSIVE)) {
 244                                 continue;
 245                         }
 246
 247                         p = setup_dcerpc_ncacn_tcpip_socket(ev_ctx,
 248                                                             msg_ctx,
 249                                                             &ss,
 250                                                             port);
 251                         if (p == 0) {
 252                                 status = NT_STATUS_UNSUCCESSFUL;
 253                                 goto done;
 254                         }
 255
 256                         if (bvec != NULL) {
 257                                 status = dcerpc_binding_vector_add_port(iface,
 258                                                                         bvec,
 259                                                                         sock_tok,
 260                                                                         p);
 261                                 if (!NT_STATUS_IS_OK(status)) {
 262                                         goto done;
 263                                 }
 264                         }
 265                 }
 266         }
 267
 268         status = NT_STATUS_OK;
 269 done:
 270         talloc_free(tmp_ctx);
 271         return status;
 272 }
 273
 274 /* vim: set ts=8 sw=8 noet cindent syntax=c.doxygen: */