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      1 /* dnssd-proxy.h
      2  *
      3  * Copyright (c) 2018-2024 Apple Inc. All rights reserved.
      4  *
      5  * Licensed under the Apache License, Version 2.0 (the "License");
      6  * you may not use this file except in compliance with the License.
      7  * You may obtain a copy of the License at
      8  *
      9  *     https://www.apache.org/licenses/LICENSE-2.0
     10  *
     11  * Unless required by applicable law or agreed to in writing, software
     12  * distributed under the License is distributed on an "AS IS" BASIS,
     13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     14  * See the License for the specific language governing permissions and
     15  * limitations under the License.
     16  *
     17  * Discovery Proxy globals.
     18  */
     19 
     20 #ifndef __DNSSD_PROXY_H__
     21 #define __DNSSD_PROXY_H__
     22 
     23 #include "srp-features.h"
     24 #include "dns-msg.h"
     25 #include "ioloop.h"
     26 
     27 //======================================================================================================================
     28 // MARK: - Macros
     29 
     30 #define MAX_ADDRS 10
     31 extern comm_t *NULLABLE dnssd_proxy_listeners[4 + MAX_ADDRS];
     32 extern int dnssd_proxy_num_listeners;
     33 extern uint16_t dnssd_proxy_udp_port;
     34 extern uint16_t dnssd_proxy_tcp_port;
     35 extern uint16_t dnssd_proxy_tls_port;
     36 
     37 #ifdef SRP_TEST_SERVER
     38 bool configure_dnssd_proxy(void);
     39 #endif
     40 
     41 #if (!SRP_FEATURE_COMBINED_SRP_DNSSD_PROXY)
     42     // FIXME: set CERTWRITE_PROGRAM and GENKEY_PROGRAM to correct one.
     43     #ifndef CERTWRITE_PROGRAM
     44         #define CERTWRITE_PROGRAM "/bin/echo"
     45     #endif
     46     #ifndef GENKEY_PROGRAM
     47         #define GENKEY_PROGRAM "/bin/echo"
     48     #endif
     49 #endif // #if (!SRP_FEATURE_COMBINED_SRP_DNSSD_PROXY)
     50 
     51 #define AUTOMATIC_BROWSING_DOMAIN "lb._dns-sd._udp.local."
     52 #define THREAD_NETWORK_NAME "openthread"
     53 #define THREAD_BROWSING_DOMAIN THREAD_NETWORK_NAME ".thread.home.arpa."
     54 
     55 #define LOCAL_ONLY_PSEUDO_INTERFACE "local only pseudo interface"
     56 #define ALL_LOCALS_PSEUDO_INTERFACE "all locally-discoverable services pseudo interface"
     57 #define INFRASTRUCTURE_PSEUDO_INTERFACE "infrastructure interface"
     58 
     59 #define DNS_OVER_TLS_DEFAULT_PORT 853
     60 
     61 typedef struct served_domain served_domain_t;
     62 
     63 //======================================================================================================================
     64 // MARK: - Functions
     65 
     66 // We can only initialize dnssd-proxy in srp-mdns-proxy if we combined it with srp-mdns-proxy.
     67 #if (SRP_FEATURE_COMBINED_SRP_DNSSD_PROXY) && !defined(RA_TESTER)
     68 #ifdef SRP_TEST_SERVER
     69 extern served_domain_t *NULLABLE last_freed_domain;
     70 #endif
     71 bool init_dnssd_proxy(srp_server_t *NONNULL server_state);
     72 served_domain_t *NULLABLE delete_served_domain_by_interface_name(const char *const NONNULL interface_name);
     73 #endif // #if (SRP_FEATURE_COMBINED_SRP_DNSSD_PROXY)
     74 
     75 void dnssd_proxy_ifaddr_callback(srp_server_t *NULLABLE server_state, void *NULLABLE context, const char *NONNULL name,
     76                                  const addr_t *NONNULL address, const addr_t *NONNULL mask, uint32_t UNUSED flags,
     77                                  enum interface_address_change event_type);
     78 void dp_start_dropping(void);
     79 void dns_proxy_input_for_server(comm_t *NONNULL comm,
     80                                 srp_server_t *NONNULL server_state, message_t *NONNULL message, void *NULLABLE context);
     81 #endif // #ifndef __DNSSD_PROXY_H__
     82 
     83 // Local Variables:
     84 // mode: C
     85 // tab-width: 4
     86 // c-file-style: "bsd"
     87 // c-basic-offset: 4
     88 // fill-column: 108
     89 // indent-tabs-mode: nil
     90 // End:
     91