source3/librpc/rpc/rpc_common.c

   1 /*
   2  *  Unix SMB/CIFS implementation.
   3  *  RPC Pipe client / server routines
   4  *  Largely rewritten by Jeremy Allison             2005.
   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 #include "librpc/rpc/dcerpc.h"
  22 #include "../librpc/gen_ndr/ndr_lsa.h"
  23 #include "../librpc/gen_ndr/ndr_dssetup.h"
  24 #include "../librpc/gen_ndr/ndr_samr.h"
  25 #include "../librpc/gen_ndr/ndr_netlogon.h"
  26 #include "../librpc/gen_ndr/ndr_srvsvc.h"
  27 #include "../librpc/gen_ndr/ndr_wkssvc.h"
  28 #include "../librpc/gen_ndr/ndr_winreg.h"
  29 #include "../librpc/gen_ndr/ndr_spoolss.h"
  30 #include "../librpc/gen_ndr/ndr_dfs.h"
  31 #include "../librpc/gen_ndr/ndr_echo.h"
  32 #include "../librpc/gen_ndr/ndr_initshutdown.h"
  33 #include "../librpc/gen_ndr/ndr_svcctl.h"
  34 #include "../librpc/gen_ndr/ndr_eventlog.h"
  35 #include "../librpc/gen_ndr/ndr_ntsvcs.h"
  36 #include "../librpc/gen_ndr/ndr_epmapper.h"
  37 #include "../librpc/gen_ndr/ndr_drsuapi.h"
  38
  39 static const char *get_pipe_name_from_iface(
  40         TALLOC_CTX *mem_ctx, const struct ndr_interface_table *interface)
  41 {
  42         int i;
  43         const struct ndr_interface_string_array *ep = interface->endpoints;
  44         char *p;
  45
  46         for (i=0; i<ep->count; i++) {
  47                 if (strncmp(ep->names[i], "ncacn_np:[\\pipe\\", 16) == 0) {
  48                         break;
  49                 }
  50         }
  51         if (i == ep->count) {
  52                 return NULL;
  53         }
  54
  55         /*
  56          * extract the pipe name without \\pipe from for example
  57          * ncacn_np:[\\pipe\\epmapper]
  58          */
  59         p = strchr(ep->names[i]+15, ']');
  60         if (p == NULL) {
  61                 return "PIPE";
  62         }
  63         return talloc_strndup(mem_ctx, ep->names[i]+15, p - ep->names[i] - 15);
  64 }
  65
  66 static const struct ndr_interface_table **interfaces;
  67
  68 bool smb_register_ndr_interface(const struct ndr_interface_table *interface)
  69 {
  70         int num_interfaces = talloc_array_length(interfaces);
  71         const struct ndr_interface_table **tmp;
  72         int i;
  73
  74         for (i=0; i<num_interfaces; i++) {
  75                 if (ndr_syntax_id_equal(&interfaces[i]->syntax_id,
  76                                         &interface->syntax_id)) {
  77                         return true;
  78                 }
  79         }
  80
  81         tmp = talloc_realloc(NULL, interfaces,
  82                              const struct ndr_interface_table *,
  83                              num_interfaces + 1);
  84         if (tmp == NULL) {
  85                 DEBUG(1, ("smb_register_ndr_interface: talloc failed\n"));
  86                 return false;
  87         }
  88         interfaces = tmp;
  89         interfaces[num_interfaces] = interface;
  90         return true;
  91 }
  92
  93 static bool initialize_interfaces(void)
  94 {
  95         if (!smb_register_ndr_interface(&ndr_table_lsarpc)) {
  96                 return false;
  97         }
  98         if (!smb_register_ndr_interface(&ndr_table_dssetup)) {
  99                 return false;
 100         }
 101         if (!smb_register_ndr_interface(&ndr_table_samr)) {
 102                 return false;
 103         }
 104         if (!smb_register_ndr_interface(&ndr_table_netlogon)) {
 105                 return false;
 106         }
 107         if (!smb_register_ndr_interface(&ndr_table_srvsvc)) {
 108                 return false;
 109         }
 110         if (!smb_register_ndr_interface(&ndr_table_wkssvc)) {
 111                 return false;
 112         }
 113         if (!smb_register_ndr_interface(&ndr_table_winreg)) {
 114                 return false;
 115         }
 116         if (!smb_register_ndr_interface(&ndr_table_spoolss)) {
 117                 return false;
 118         }
 119         if (!smb_register_ndr_interface(&ndr_table_netdfs)) {
 120                 return false;
 121         }
 122         if (!smb_register_ndr_interface(&ndr_table_rpcecho)) {
 123                 return false;
 124         }
 125         if (!smb_register_ndr_interface(&ndr_table_initshutdown)) {
 126                 return false;
 127         }
 128         if (!smb_register_ndr_interface(&ndr_table_svcctl)) {
 129                 return false;
 130         }
 131         if (!smb_register_ndr_interface(&ndr_table_eventlog)) {
 132                 return false;
 133         }
 134         if (!smb_register_ndr_interface(&ndr_table_ntsvcs)) {
 135                 return false;
 136         }
 137         if (!smb_register_ndr_interface(&ndr_table_epmapper)) {
 138                 return false;
 139         }
 140         if (!smb_register_ndr_interface(&ndr_table_drsuapi)) {
 141                 return false;
 142         }
 143         return true;
 144 }
 145
 146 const struct ndr_interface_table *get_iface_from_syntax(
 147         const struct ndr_syntax_id *syntax)
 148 {
 149         int num_interfaces;
 150         int i;
 151
 152         if (interfaces == NULL) {
 153                 if (!initialize_interfaces()) {
 154                         return NULL;
 155                 }
 156         }
 157         num_interfaces = talloc_array_length(interfaces);
 158
 159         for (i=0; i<num_interfaces; i++) {
 160                 if (ndr_syntax_id_equal(&interfaces[i]->syntax_id, syntax)) {
 161                         return interfaces[i];
 162                 }
 163         }
 164
 165         return NULL;
 166 }
 167
 168 /****************************************************************************
 169  Return the pipe name from the interface.
 170  ****************************************************************************/
 171
 172 const char *get_pipe_name_from_syntax(TALLOC_CTX *mem_ctx,
 173                                       const struct ndr_syntax_id *syntax)
 174 {
 175         const struct ndr_interface_table *interface;
 176         char *guid_str;
 177         const char *result;
 178
 179         interface = get_iface_from_syntax(syntax);
 180         if (interface != NULL) {
 181                 result = get_pipe_name_from_iface(mem_ctx, interface);
 182                 if (result != NULL) {
 183                         return result;
 184                 }
 185         }
 186
 187         /*
 188          * Here we should ask \\epmapper, but for now our code is only
 189          * interested in the known pipes mentioned in pipe_names[]
 190          */
 191
 192         guid_str = GUID_string(talloc_tos(), &syntax->uuid);
 193         if (guid_str == NULL) {
 194                 return NULL;
 195         }
 196         result = talloc_asprintf(mem_ctx, "Interface %s.%d", guid_str,
 197                                  (int)syntax->if_version);
 198         TALLOC_FREE(guid_str);
 199
 200         if (result == NULL) {
 201                 return "PIPE";
 202         }
 203         return result;
 204 }
 205