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Commitfe80caa

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committed
Define constants for the IPv4 index
1 parentac541e8 commitfe80caa

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2 files changed

+26
-25
lines changed

2 files changed

+26
-25
lines changed

‎api/IPAddress.cpp‎

Lines changed: 21 additions & 23 deletions
Original file line numberDiff line numberDiff line change
@@ -33,11 +33,11 @@ IPAddress::IPAddress(IPType ip_type)
3333
IPAddress::IPAddress(uint8_t first_octet,uint8_t second_octet,uint8_t third_octet,uint8_t fourth_octet)
3434
{
3535
_type = IPv4;
36-
memset(_address.bytes,0,sizeof(_address.bytes) -sizeof(uint32_t));
37-
_address.bytes[12] = first_octet;
38-
_address.bytes[13] = second_octet;
39-
_address.bytes[14] = third_octet;
40-
_address.bytes[15] = fourth_octet;
36+
memset(_address.bytes,0,sizeof(_address.bytes));
37+
_address.bytes[IPADDRESS_V4_BYTES_INDEX] = first_octet;
38+
_address.bytes[IPADDRESS_V4_BYTES_INDEX +1] = second_octet;
39+
_address.bytes[IPADDRESS_V4_BYTES_INDEX +2] = third_octet;
40+
_address.bytes[IPADDRESS_V4_BYTES_INDEX +3] = fourth_octet;
4141
}
4242

4343
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) {
@@ -64,8 +64,8 @@ IPAddress::IPAddress(uint32_t address)
6464
{
6565
// IPv4 only
6666
_type = IPv4;
67-
memset(_address.bytes,0,sizeof(_address.bytes) -sizeof(uint32_t));
68-
_address.dword[3] = address;
67+
memset(_address.bytes,0,sizeof(_address.bytes));
68+
_address.dword[IPADDRESS_V4_DWORD_INDEX] = address;
6969

7070
// NOTE on conversion/comparison and uint32_t:
7171
// These conversions are host platform dependent.
@@ -82,8 +82,8 @@ IPAddress::IPAddress(IPType ip_type, const uint8_t *address)
8282
{
8383
_type = ip_type;
8484
if (ip_type == IPv4) {
85-
memset(_address.bytes,0,sizeof(_address.bytes) -sizeof(uint32_t));
86-
memcpy(&_address.bytes[12], address,sizeof(uint32_t));
85+
memset(_address.bytes,0,sizeof(_address.bytes));
86+
memcpy(&_address.bytes[IPADDRESS_V4_BYTES_INDEX], address,sizeof(uint32_t));
8787
}else {
8888
memcpy(_address.bytes, address,sizeof(_address.bytes));
8989
}
@@ -103,6 +103,7 @@ bool IPAddress::fromString4(const char *address)
103103
int16_t acc = -1;// Accumulator
104104
uint8_t dots =0;
105105

106+
memset(_address.bytes,0,sizeof(_address.bytes));
106107
while (*address)
107108
{
108109
char c = *address++;
@@ -124,7 +125,7 @@ bool IPAddress::fromString4(const char *address)
124125
/* No value between dots, e.g. '1..'*/
125126
returnfalse;
126127
}
127-
_address.bytes[12 + dots++] = acc;
128+
_address.bytes[IPADDRESS_V4_BYTES_INDEX + dots++] = acc;
128129
acc = -1;
129130
}
130131
else
@@ -142,8 +143,7 @@ bool IPAddress::fromString4(const char *address)
142143
/* No value between dots, e.g. '1..'*/
143144
returnfalse;
144145
}
145-
memset(_address.bytes,0,sizeof(_address.bytes) -sizeof(uint32_t));
146-
_address.bytes[15] = acc;
146+
_address.bytes[IPADDRESS_V4_BYTES_INDEX +3] = acc;
147147
_type = IPv4;
148148
returntrue;
149149
}
@@ -220,8 +220,8 @@ IPAddress& IPAddress::operator=(const uint8_t *address)
220220
{
221221
// IPv4 only conversion from byte pointer
222222
_type = IPv4;
223-
memset(_address.bytes,0,sizeof(_address.bytes) -sizeof(uint32_t));
224-
memcpy(&_address.bytes[12], address,sizeof(uint32_t));
223+
memset(_address.bytes,0,sizeof(_address.bytes));
224+
memcpy(&_address.bytes[IPADDRESS_V4_BYTES_INDEX], address,sizeof(uint32_t));
225225
return *this;
226226
}
227227

@@ -230,10 +230,8 @@ IPAddress& IPAddress::operator=(uint32_t address)
230230
// IPv4 conversion
231231
// See note on conversion/comparison and uint32_t
232232
_type = IPv4;
233-
_address.dword[0] =0;
234-
_address.dword[1] =0;
235-
_address.dword[2] =0;
236-
_address.dword[3] = address;
233+
memset(_address.bytes,0,sizeof(_address.bytes));
234+
_address.dword[IPADDRESS_V4_DWORD_INDEX] = address;
237235
return *this;
238236
}
239237

@@ -246,19 +244,19 @@ bool IPAddress::operator==(const uint8_t* addr) const
246244
{
247245
// IPv4 only comparison to byte pointer
248246
// Can't support IPv6 as we know our type, but not the length of the pointer
249-
return _type == IPv4 &&memcmp(addr, &_address.bytes[12],sizeof(uint32_t)) ==0;
247+
return _type == IPv4 &&memcmp(addr, &_address.bytes[IPADDRESS_V4_BYTES_INDEX],sizeof(uint32_t)) ==0;
250248
}
251249

252250
uint8_t IPAddress::operator[](int index)const {
253251
if (_type == IPv4) {
254-
return _address.bytes[index +12];
252+
return _address.bytes[IPADDRESS_V4_BYTES_INDEX +index];
255253
}
256254
return _address.bytes[index];
257255
};
258256

259257
uint8_t& IPAddress::operator[](int index) {
260258
if (_type == IPv4) {
261-
return _address.bytes[index +12];
259+
return _address.bytes[IPADDRESS_V4_BYTES_INDEX +index];
262260
}
263261
return _address.bytes[index];
264262
};
@@ -321,10 +319,10 @@ size_t IPAddress::printTo(Print& p) const
321319
// IPv4
322320
for (int i =0; i <3; i++)
323321
{
324-
n += p.print(_address.bytes[12 + i], DEC);
322+
n += p.print(_address.bytes[IPADDRESS_V4_BYTES_INDEX + i], DEC);
325323
n += p.print('.');
326324
}
327-
n += p.print(_address.bytes[15], DEC);
325+
n += p.print(_address.bytes[IPADDRESS_V4_BYTES_INDEX +3], DEC);
328326
return n;
329327
}
330328

‎api/IPAddress.h‎

Lines changed: 5 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -23,6 +23,9 @@
2323
#include"Printable.h"
2424
#include"String.h"
2525

26+
#defineIPADDRESS_V4_BYTES_INDEX12
27+
#defineIPADDRESS_V4_DWORD_INDEX3
28+
2629
// forward declarations of global name space friend classes
2730
classEthernetClass;
2831
classDhcpClass;
@@ -49,7 +52,7 @@ class IPAddress : public Printable {
4952
// to the internal structure rather than a copy of the address this function should only
5053
// be used when you know that the usage of the returned uint8_t* will be transient and not
5154
// stored.
52-
uint8_t*raw_address() {return _type == IPv4 ? &_address.bytes[12] : _address.bytes; }
55+
uint8_t*raw_address() {return _type == IPv4 ? &_address.bytes[IPADDRESS_V4_BYTES_INDEX] : _address.bytes; }
5356

5457
public:
5558
// Constructors
@@ -70,7 +73,7 @@ class IPAddress : public Printable {
7073

7174
// Overloaded cast operator to allow IPAddress objects to be used where a uint32_t is expected
7275
// NOTE: IPv4 only; see implementation note
73-
operatoruint32_t()const {return _type == IPv4 ? _address.dword[3] :0; };
76+
operatoruint32_t()const {return _type == IPv4 ? _address.dword[IPADDRESS_V4_DWORD_INDEX] :0; };
7477

7578
booloperator==(const IPAddress& addr)const;
7679
booloperator!=(const IPAddress& addr)const {return !(*this == addr); };

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