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
|
// NetworkInterfaceEnum.cpp
// Implements the cNetwork::EnumLocalIPAddresses() interface enumeration function
#include "Globals.h"
#include "Network.h"
#include "event2/util.h"
#ifdef _WIN32
#include <IPHlpApi.h>
#pragma comment(lib, "IPHLPAPI.lib")
#else // _WIN32
#endif // else _WIN32
#ifdef SELF_TEST
static class cEnumIPAddressTest
{
public:
cEnumIPAddressTest(void)
{
printf("Enumerating all IP addresses...\n");
auto IPs = cNetwork::EnumLocalIPAddresses();
for (auto & ip: IPs)
{
printf(" %s\n", ip.c_str());
}
printf("done.\n");
}
} 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 AString(IP);
}
#endif // _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 != 1)
{
// 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
// TODO: Enumerate network interfaces on Linux
#endif // else _WIN32
return res;
}
|
