Andrew Boyson / net

A stack which works with or without an Mbed os library. Provides IPv4 or IPv6 with a full 1500 byte buffer.

Dependents:   oldheating gps motorhome heating

udp/dns/dns.c@200:5acbc41bf469, 2021-05-20 (annotated)

Committer:
andrewboyson
Date:
Thu May 20 14:32:52 2021 +0000
Revision:
200:5acbc41bf469
Parent:
172:9bc3c7b2cca1 
Increased number of arp entries from 20 to 30 to accommodate the number of WIZ devices plus a few incoming port 80 calls from the internet.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
andrewboyson 61:aad055f1b0d1 1 #include <stdint.h>
andrewboyson 61:aad055f1b0d1 2 #include <stdbool.h>
andrewboyson 61:aad055f1b0d1 3 #include <string.h>
andrewboyson 61:aad055f1b0d1 4 #include <stdio.h>
andrewboyson 61:aad055f1b0d1 5
andrewboyson 13:9cd54f7db57a 6 #include "dns.h"
andrewboyson 13:9cd54f7db57a 7 #include "dnshdr.h"
andrewboyson 13:9cd54f7db57a 8 #include "dnsquery.h"
andrewboyson 13:9cd54f7db57a 9 #include "dnsreply.h"
andrewboyson 13:9cd54f7db57a 10 #include "dnsserver.h"
andrewboyson 32:679654f2d023 11 #include "log.h"
andrewboyson 32:679654f2d023 12 #include "dhcp.h"
andrewboyson 13:9cd54f7db57a 13
andrewboyson 83:08c983006a6e 14
andrewboyson 83:08c983006a6e 15 bool DnsSendRequestsViaIp4 = false;
andrewboyson 83:08c983006a6e 16
andrewboyson 47:73af5c0b0dc2 17 void DnsProtocolString(uint8_t protocol, int size, char* text)
andrewboyson 13:9cd54f7db57a 18 {
andrewboyson 13:9cd54f7db57a 19 switch (protocol)
andrewboyson 13:9cd54f7db57a 20 {
andrewboyson 13:9cd54f7db57a 21 case DNS_PROTOCOL_UDNS: strncpy (text, "DNS", size); break;
andrewboyson 13:9cd54f7db57a 22 case DNS_PROTOCOL_MDNS: strncpy (text, "MDNS", size); break;
andrewboyson 13:9cd54f7db57a 23 case DNS_PROTOCOL_LLMNR: strncpy (text, "LLMNR", size); break;
andrewboyson 13:9cd54f7db57a 24 default: snprintf(text, size, "%d", protocol); break;
andrewboyson 13:9cd54f7db57a 25 }
andrewboyson 13:9cd54f7db57a 26 }
andrewboyson 13:9cd54f7db57a 27
andrewboyson 47:73af5c0b0dc2 28 void DnsRecordTypeString(uint8_t recordtype, int size, char* text)
andrewboyson 13:9cd54f7db57a 29 {
andrewboyson 13:9cd54f7db57a 30 switch (recordtype)
andrewboyson 13:9cd54f7db57a 31 {
andrewboyson 13:9cd54f7db57a 32 case DNS_RECORD_A: strncpy (text, "A", size); break;
andrewboyson 13:9cd54f7db57a 33 case DNS_RECORD_AAAA: strncpy (text, "AAAA", size); break;
andrewboyson 13:9cd54f7db57a 34 case DNS_RECORD_PTR: strncpy (text, "PTR", size); break;
andrewboyson 15:6ca6778168b1 35 case DNS_RECORD_TXT: strncpy (text, "TXT", size); break;
andrewboyson 15:6ca6778168b1 36 case DNS_RECORD_SRV: strncpy (text, "SRV", size); break;
andrewboyson 13:9cd54f7db57a 37 default: snprintf(text, size, "%d", recordtype); break;
andrewboyson 13:9cd54f7db57a 38 }
andrewboyson 13:9cd54f7db57a 39 }
andrewboyson 47:73af5c0b0dc2 40 void DnsProtocolLog(uint8_t protocol)
andrewboyson 47:73af5c0b0dc2 41 {
andrewboyson 47:73af5c0b0dc2 42 switch (protocol)
andrewboyson 47:73af5c0b0dc2 43 {
andrewboyson 47:73af5c0b0dc2 44 case DNS_PROTOCOL_UDNS: Log ("DNS "); break;
andrewboyson 47:73af5c0b0dc2 45 case DNS_PROTOCOL_MDNS: Log ("MDNS "); break;
andrewboyson 47:73af5c0b0dc2 46 case DNS_PROTOCOL_LLMNR: Log ("LLMNR"); break;
andrewboyson 47:73af5c0b0dc2 47 default: LogF("%d", protocol); break;
andrewboyson 47:73af5c0b0dc2 48 }
andrewboyson 47:73af5c0b0dc2 49 }
andrewboyson 47:73af5c0b0dc2 50
andrewboyson 47:73af5c0b0dc2 51 void DnsRecordTypeLog(uint8_t recordtype)
andrewboyson 47:73af5c0b0dc2 52 {
andrewboyson 47:73af5c0b0dc2 53 switch (recordtype)
andrewboyson 47:73af5c0b0dc2 54 {
andrewboyson 47:73af5c0b0dc2 55 case DNS_RECORD_A: Log ("A" ); break;
andrewboyson 47:73af5c0b0dc2 56 case DNS_RECORD_AAAA: Log ("AAAA"); break;
andrewboyson 47:73af5c0b0dc2 57 case DNS_RECORD_PTR: Log ("PTR" ); break;
andrewboyson 47:73af5c0b0dc2 58 case DNS_RECORD_TXT: Log ("TXT" ); break;
andrewboyson 47:73af5c0b0dc2 59 case DNS_RECORD_SRV: Log ("SRV" ); break;
andrewboyson 47:73af5c0b0dc2 60 default: LogF("%d", recordtype); break;
andrewboyson 47:73af5c0b0dc2 61 }
andrewboyson 47:73af5c0b0dc2 62 }
andrewboyson 13:9cd54f7db57a 63
andrewboyson 43:bc028d5a6424 64 void DnsMain()
andrewboyson 13:9cd54f7db57a 65 {
andrewboyson 43:bc028d5a6424 66 DnsQueryMain();
andrewboyson 13:9cd54f7db57a 67 }
andrewboyson 13:9cd54f7db57a 68
andrewboyson 59:e0e556c8bd46 69 int DnsHandlePacketReceived(void (*traceback)(void), int dnsProtocol, int sizeRx, void* pPacketRx, int* pSizeTx, void* pPacketTx)
andrewboyson 13:9cd54f7db57a 70 {
andrewboyson 59:e0e556c8bd46 71 DnsHdrSetup(pPacketRx, sizeRx);
andrewboyson 13:9cd54f7db57a 72 DnsHdrRead();
andrewboyson 59:e0e556c8bd46 73
andrewboyson 13:9cd54f7db57a 74 int action;
andrewboyson 13:9cd54f7db57a 75 if (DnsHdrIsReply)
andrewboyson 13:9cd54f7db57a 76 {
andrewboyson 59:e0e556c8bd46 77 action = DnsReplyHandle(traceback, dnsProtocol);
andrewboyson 13:9cd54f7db57a 78 }
andrewboyson 13:9cd54f7db57a 79 else
andrewboyson 13:9cd54f7db57a 80 {
andrewboyson 59:e0e556c8bd46 81 action = DnsServerHandleQuery(traceback, dnsProtocol, pPacketTx, pSizeTx);
andrewboyson 13:9cd54f7db57a 82 }
andrewboyson 13:9cd54f7db57a 83 return action;
andrewboyson 13:9cd54f7db57a 84 }
andrewboyson 13:9cd54f7db57a 85
andrewboyson 171:f708d6776752 86 int DnsPollForPacketToSend(int ipType, void* pPacketTx, int* pSize)
andrewboyson 13:9cd54f7db57a 87 {
andrewboyson 171:f708d6776752 88 return DnsQueryPoll(ipType, pPacketTx, pSize);
andrewboyson 13:9cd54f7db57a 89 }