source4/dns_server/dns_server.h

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    DNS structures
   5
   6    Copyright (C) 2010 Kai Blin  <kai@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 #ifndef __DNS_SERVER_H__
  23 #define __DNS_SERVER_H__
  24
  25 #include "librpc/gen_ndr/dns.h"
  26 #include "librpc/gen_ndr/ndr_dnsp.h"
  27 #include "dnsserver_common.h"
  28
  29 struct tsocket_address;
  30 struct dns_server_tkey {
  31         const char *name;
  32         enum dns_tkey_mode mode;
  33         const char *algorithm;
  34         struct auth_session_info *session_info;
  35         struct gensec_security *gensec;
  36         bool complete;
  37 };
  38
  39 #define TKEY_BUFFER_SIZE 128
  40
  41 struct dns_server_tkey_store {
  42         struct dns_server_tkey **tkeys;
  43         uint16_t next_idx;
  44         uint16_t size;
  45 };
  46
  47 struct dns_server {
  48         struct task_server *task;
  49         struct ldb_context *samdb;
  50         struct dns_server_zone *zones;
  51         struct dns_server_tkey_store *tkeys;
  52         struct cli_credentials *server_credentials;
  53         uint16_t max_payload;
  54 };
  55
  56 struct dns_request_state {
  57         TALLOC_CTX *mem_ctx;
  58         uint16_t flags;
  59         bool authenticated;
  60         bool sign;
  61         char *key_name;
  62         struct dns_res_rec *tsig;
  63         uint16_t tsig_error;
  64         const struct tsocket_address *local_address;
  65         const struct tsocket_address *remote_address;
  66 };
  67
  68 struct tevent_req *dns_server_process_query_send(
  69         TALLOC_CTX *mem_ctx, struct tevent_context *ev,
  70         struct dns_server *dns, struct dns_request_state *req_state,
  71         const struct dns_name_packet *in);
  72 WERROR dns_server_process_query_recv(
  73         struct tevent_req *req, TALLOC_CTX *mem_ctx,
  74         struct dns_res_rec **answers,    uint16_t *ancount,
  75         struct dns_res_rec **nsrecs,     uint16_t *nscount,
  76         struct dns_res_rec **additional, uint16_t *arcount);
  77
  78 WERROR dns_server_process_update(struct dns_server *dns,
  79                                  const struct dns_request_state *state,
  80                                  TALLOC_CTX *mem_ctx,
  81                                  const struct dns_name_packet *in,
  82                                  struct dns_res_rec **prereqs,    uint16_t *prereq_count,
  83                                  struct dns_res_rec **updates,    uint16_t *update_count,
  84                                  struct dns_res_rec **additional, uint16_t *arcount);
  85
  86 bool dns_name_equal(const char *name1, const char *name2);
  87 bool dns_records_match(struct dnsp_DnssrvRpcRecord *rec1,
  88                        struct dnsp_DnssrvRpcRecord *rec2);
  89 bool dns_authoritative_for_zone(struct dns_server *dns,
  90                                 const char *name);
  91 const char *dns_get_authoritative_zone(struct dns_server *dns,
  92                                        const char *name);
  93 WERROR dns_lookup_records(struct dns_server *dns,
  94                           TALLOC_CTX *mem_ctx,
  95                           struct ldb_dn *dn,
  96                           struct dnsp_DnssrvRpcRecord **records,
  97                           uint16_t *rec_count);
  98 WERROR dns_replace_records(struct dns_server *dns,
  99                            TALLOC_CTX *mem_ctx,
 100                            struct ldb_dn *dn,
 101                            bool needs_add,
 102                            struct dnsp_DnssrvRpcRecord *records,
 103                            uint16_t rec_count);
 104 WERROR dns_name2dn(struct dns_server *dns,
 105                    TALLOC_CTX *mem_ctx,
 106                    const char *name,
 107                    struct ldb_dn **_dn);
 108 WERROR dns_generate_options(struct dns_server *dns,
 109                             TALLOC_CTX *mem_ctx,
 110                             struct dns_res_rec **options);
 111 struct dns_server_tkey *dns_find_tkey(struct dns_server_tkey_store *store,
 112                                       const char *name);
 113 WERROR dns_verify_tsig(struct dns_server *dns,
 114                        TALLOC_CTX *mem_ctx,
 115                        struct dns_request_state *state,
 116                        struct dns_name_packet *packet,
 117                        DATA_BLOB *in);
 118 WERROR dns_sign_tsig(struct dns_server *dns,
 119                      TALLOC_CTX *mem_ctx,
 120                      struct dns_request_state *state,
 121                      struct dns_name_packet *packet,
 122                      uint16_t error);
 123
 124 #include "source4/dns_server/dnsserver_common.h"
 125
 126 #endif /* __DNS_SERVER_H__ */