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IPv6 for Arduino 3.0.0
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@Jason2866
Jason2866 authored Nov 21, 2023
1 parent 4b6f939 commit 23fa1f8
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226 changes: 179 additions & 47 deletions cores/esp32/IPAddress.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -20,68 +20,87 @@
#include <Arduino.h>
#include <IPAddress.h>
#include <Print.h>
#include <StreamString.h>

IPAddress::IPAddress()
{
_address.dword = 0;
IPAddress::IPAddress() {
#if LWIP_IPV6
_ip = *IP6_ADDR_ANY;
#else
_ip = *IP_ADDR_ANY;
#endif
// _ip = *IP_ANY_TYPE; // lwIP's v4-or-v6 generic address
}

IPAddress::IPAddress(uint8_t first_octet, uint8_t second_octet, uint8_t third_octet, uint8_t fourth_octet)
IPAddress::IPAddress(const IPAddress& from)
{
_address.bytes[0] = first_octet;
_address.bytes[1] = second_octet;
_address.bytes[2] = third_octet;
_address.bytes[3] = fourth_octet;
ip_addr_copy(_ip, from._ip);
}

IPAddress::IPAddress(uint32_t address)
{
_address.dword = address;
IPAddress::IPAddress(uint8_t first_octet, uint8_t second_octet, uint8_t third_octet, uint8_t fourth_octet) {
uint8_t addr[] {
first_octet,
second_octet,
third_octet,
fourth_octet,
};
*this = &addr[0];
}

IPAddress::IPAddress(const uint8_t *address)
{
memcpy(_address.bytes, address, sizeof(_address.bytes));
IPAddress::IPAddress(uint8_t o1, uint8_t o2, uint8_t o3, uint8_t o4, uint8_t o5, uint8_t o6, uint8_t o7, uint8_t o8, uint8_t o9, uint8_t o10, uint8_t o11, uint8_t o12, uint8_t o13, uint8_t o14, uint8_t o15, uint8_t o16) {
setV6();
(*this)[0] = o1;
(*this)[1] = o2;
(*this)[2] = o3;
(*this)[3] = o4;
(*this)[4] = o5;
(*this)[5] = o6;
(*this)[6] = o7;
(*this)[7] = o8;
(*this)[8] = o9;
(*this)[9] = o10;
(*this)[10] = o11;
(*this)[11] = o12;
(*this)[12] = o13;
(*this)[13] = o14;
(*this)[14] = o15;
(*this)[15] = o16;
}

IPAddress& IPAddress::operator=(const uint8_t *address)
{
memcpy(_address.bytes, address, sizeof(_address.bytes));
return *this;
IPAddress::IPAddress(IPType type, const uint8_t *address) {
IPAddress(type, address, 0);
}

IPAddress& IPAddress::operator=(uint32_t address)
{
_address.dword = address;
return *this;
}
IPAddress::IPAddress(IPType type, const uint8_t *address, uint8_t zone) {
if (type == IPv4) {
setV4();
memcpy(&this->_ip.u_addr.ip4, address, 4);
} else if (type == IPv6) {
setV6();
memcpy(&this->_ip.u_addr.ip6.addr[0], address, 16);
setZone(zone);
} else {
#if LWIP_IPV6
_ip = *IP6_ADDR_ANY;
#else
_ip = *IP_ADDR_ANY;
#endif
}

bool IPAddress::operator==(const uint8_t* addr) const
{
return memcmp(addr, _address.bytes, sizeof(_address.bytes)) == 0;
}

size_t IPAddress::printTo(Print& p) const
{
size_t n = 0;
for(int i = 0; i < 3; i++) {
n += p.print(_address.bytes[i], DEC);
n += p.print('.');
bool IPAddress::fromString(const char *address) {
if (!fromString4(address)) {
#if LWIP_IPV6
return fromString6(address);
#else
return false;
#endif
}
n += p.print(_address.bytes[3], DEC);
return n;
}

String IPAddress::toString() const
{
char szRet[16];
sprintf(szRet,"%u.%u.%u.%u", _address.bytes[0], _address.bytes[1], _address.bytes[2], _address.bytes[3]);
return String(szRet);
return true;
}

bool IPAddress::fromString(const char *address)
{
// TODO: add support for "a", "a.b", "a.b.c" formats
bool IPAddress::fromString4(const char *address) {
// TODO: (IPv4) add support for "a", "a.b", "a.b.c" formats

uint16_t acc = 0; // Accumulator
uint8_t dots = 0;
Expand All @@ -103,7 +122,7 @@ bool IPAddress::fromString(const char *address)
// Too much dots (there must be 3 dots)
return false;
}
_address.bytes[dots++] = acc;
(*this)[dots++] = acc;
acc = 0;
}
else
Expand All @@ -117,9 +136,122 @@ bool IPAddress::fromString(const char *address)
// Too few dots (there must be 3 dots)
return false;
}
_address.bytes[3] = acc;
(*this)[3] = acc;

setV4();
return true;
}

IPAddress& IPAddress::operator=(const uint8_t *address) {
uint32_t value;
memcpy_P(&value, address, sizeof(value));
*this = value;
return *this;
}

IPAddress& IPAddress::operator=(uint32_t address) {
setV4();
v4() = address;
return *this;
}

bool IPAddress::operator==(const uint8_t* addr) const {
if (!isV4()) {
return false;
}

uint32_t value;
memcpy_P(&value, addr, sizeof(value));

return v4() == value;
}

size_t IPAddress::printTo(Print& p) const {
size_t n = 0;

#if LWIP_IPV6
if (isV6()) {
int count0 = 0;
for (int i = 0; i < 8; i++) {
uint16_t bit = PP_NTOHS(raw6()[i]);
if (bit || count0 < 0) {
n += p.printf("%x", bit);
if (count0 > 0)
// no more hiding 0
count0 = -8;
} else
count0++;
if ((i != 7 && count0 < 2) || count0 == 7)
n += p.print(':');
}
// add a zone if zone-id si non-zero
if (_ip.u_addr.ip6.zone) {
n += p.print('%');
char if_name[NETIF_NAMESIZE];
netif_index_to_name(_ip.u_addr.ip6.zone, if_name);
n += p.print(if_name);
}
return n;
}
#endif

for(int i = 0; i < 4; i++) {
n += p.print((*this)[i], DEC);
if (i != 3)
n += p.print('.');
}
return n;
}

String IPAddress::toString() const
{
StreamString sstr;
#if LWIP_IPV6
if (isV6())
sstr.reserve(44); // 8 shorts x 4 chars each + 7 colons + nullterm + '%' + zone-id
else
#endif
sstr.reserve(16); // 4 bytes with 3 chars max + 3 dots + nullterm, or '(IP unset)'
printTo(sstr);
return sstr;
}

bool IPAddress::isValid(const String& arg) {
return IPAddress().fromString(arg);
}

bool IPAddress::isValid(const char* arg) {
return IPAddress().fromString(arg);
}

const IPAddress INADDR46_ANY; // generic "0.0.0.0" for IPv4 & IPv6
const IPAddress INADDR46_NONE(255,255,255,255);

void IPAddress::clear() {
(*this) = INADDR46_ANY;
}

/**************************************/

#if LWIP_IPV6

bool IPAddress::fromString6(const char *address) {
ip6_addr_t ip6;
if (ip6addr_aton(address, &ip6)) {
setV6();
memcpy(&this->_ip.u_addr.ip6.addr[0], ip6.addr, 16);
// look for '%' in string
const char *s = address;
while (*s && *s != '%') { s++; }
if (*s == '%') {
// we have a zone id
setZone(netif_name_to_index(s + 1));
}
return true;
}
return false;
}
#endif // LWIP_IPV6

// declared one time - as external in IPAddress.h
IPAddress INADDR_NONE(0, 0, 0, 0);
IPAddress INADDR_NONE(0, 0, 0, 0); // TODO
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