1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
|
// NetworkInterfaceEnum.cpp
// Implements the cNetwork::EnumLocalIPAddresses() interface enumeration function
#include "Globals.h"
#include "Network.h"
#include "event2/util.h"
#include "../SelfTests.h"
#ifdef _WIN32
#include <IPHlpApi.h>
#pragma comment(lib, "IPHLPAPI.lib")
#else // _WIN32
#include <sys/types.h>
#include <ifaddrs.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#endif // else _WIN32
#ifdef SELF_TEST
static class cEnumIPAddressTest
{
public:
cEnumIPAddressTest(void)
{
cSelfTests::Get().Register(std::function<void(void)>(&Test), "Network IP enumeration");
}
static void Test(void)
{
LOG("Enumerating all IP addresses...");
auto IPs = cNetwork::EnumLocalIPAddresses();
for (auto & ip: IPs)
{
LOG(" %s", ip.c_str());
}
LOG("Done.");
}
} g_EnumIPAddressTest;
#endif // SELF_TEST
#ifdef _WIN32
/** Converts the SOCKET_ADDRESS structure received from the OS into an IP address string. */
static AString PrintAddress(SOCKET_ADDRESS & a_Addr)
{
char IP[128];
switch (a_Addr.lpSockaddr->sa_family)
{
case AF_INET:
{
auto sin = reinterpret_cast<const sockaddr_in *>(a_Addr.lpSockaddr);
evutil_inet_ntop(a_Addr.lpSockaddr->sa_family, &(sin->sin_addr), IP, sizeof(IP));
break;
}
case AF_INET6:
{
auto sin = reinterpret_cast<const sockaddr_in6 *>(a_Addr.lpSockaddr);
evutil_inet_ntop(a_Addr.lpSockaddr->sa_family, &(sin->sin6_addr), IP, sizeof(IP));
break;
}
default:
{
IP[0] = 0;
break;
}
}
return IP;
}
#else // _WIN32
static AString PrintAddress(ifaddrs * InterfaceAddress)
{
switch (InterfaceAddress->ifa_addr->sa_family)
{
case AF_INET:
{ // IPv4
char AddressBuffer[INET_ADDRSTRLEN];
sockaddr_in InternetSocket;
std::memcpy(&InternetSocket, InterfaceAddress->ifa_addr, sizeof(InternetSocket));
inet_ntop(AF_INET, &InternetSocket.sin_addr, AddressBuffer, INET_ADDRSTRLEN);
return AddressBuffer;
}
case AF_INET6:
{ // IPv6
char AddressBuffer[INET6_ADDRSTRLEN];
sockaddr_in6 InternetSocket;
std::memcpy(&InternetSocket, InterfaceAddress->ifa_addr, sizeof(InternetSocket));
inet_ntop(AF_INET6, &InternetSocket.sin6_addr, AddressBuffer, INET6_ADDRSTRLEN);
return AddressBuffer;
}
default:
{
LOG("Unknown address family: %i", InterfaceAddress->ifa_addr->sa_family);
return "";
}
}
}
#endif // else _WIN32
AStringVector cNetwork::EnumLocalIPAddresses(void)
{
AStringVector res;
#ifdef _WIN32
// Query the OS for all adapters' addresses:
char buffer[64 KiB]; // A buffer backing the address list
PIP_ADAPTER_ADDRESSES pAddresses = reinterpret_cast<PIP_ADAPTER_ADDRESSES>(&buffer);
ULONG outBufLen = sizeof(buffer);
DWORD dwRetVal = GetAdaptersAddresses(
AF_UNSPEC,
GAA_FLAG_SKIP_ANYCAST | GAA_FLAG_SKIP_MULTICAST | GAA_FLAG_SKIP_DNS_SERVER | GAA_FLAG_SKIP_FRIENDLY_NAME, nullptr,
pAddresses, &outBufLen
);
if (dwRetVal != ERROR_SUCCESS)
{
LOG("GetAdaptersAddresses() failed: %u", dwRetVal);
return res;
}
// Enumerate all active adapters
for (auto pCurrAddresses = pAddresses; pCurrAddresses != nullptr; pCurrAddresses = pCurrAddresses->Next)
{
if (pCurrAddresses->OperStatus != IfOperStatusUp)
{
// Adapter not active, skip it:
continue;
}
// Collect all IP addresses on this adapter:
for (auto pUnicast = pCurrAddresses->FirstUnicastAddress; pUnicast != nullptr; pUnicast = pUnicast->Next)
{
auto Address = PrintAddress(pUnicast->Address);
if (!Address.empty())
{
res.push_back(Address);
}
} // for pUnicast
} // for pCurrAddresses
#else // _WIN32
struct ifaddrs * ifAddrStruct = nullptr;
getifaddrs(&ifAddrStruct);
for (auto ifa = ifAddrStruct; ifa != nullptr; ifa = ifa->ifa_next)
{
if (ifa->ifa_addr == nullptr)
{
continue;
}
auto Address = PrintAddress(ifa);
if (!Address.empty())
{
res.emplace_back(Address);
}
}
if (ifAddrStruct != nullptr)
{
freeifaddrs(ifAddrStruct);
}
#endif // else _WIN32
return res;
}
|
