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
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
|
// Copyright (c) 2015-2018 Josh Blum
// SPDX-License-Identifier: BSL-1.0
#include "SoapySocketDefs.hpp"
#include "SoapyURLUtils.hpp"
#include <cstring> //memset
#include <string>
#include <cassert>
SockAddrData::SockAddrData(void)
{
return;
}
SockAddrData::SockAddrData(const struct sockaddr *addr, const int addrlen)
{
_storage.resize(addrlen);
std::memcpy(_storage.data(), addr, addrlen);
}
const struct sockaddr *SockAddrData::addr(void) const
{
return (const struct sockaddr *)_storage.data();
}
size_t SockAddrData::addrlen(void) const
{
return _storage.size();
}
SoapyURL::SoapyURL(void)
{
return;
}
SoapyURL::SoapyURL(const std::string &scheme, const std::string &node, const std::string &service):
_scheme(scheme),
_node(node),
_service(service)
{
return;
}
SoapyURL::SoapyURL(const std::string &url)
{
//extract the scheme
std::string urlRest = url;
auto schemeEnd = url.find("://");
if (schemeEnd != std::string::npos)
{
_scheme = url.substr(0, schemeEnd);
urlRest = url.substr(schemeEnd+3);
}
//extract node name and service port
bool inBracket = false;
bool inService = false;
for (size_t i = 0; i < urlRest.size(); i++)
{
const char ch = urlRest[i];
if (inBracket and ch == ']')
{
inBracket = false;
continue;
}
if (not inBracket and ch == '[')
{
inBracket = true;
continue;
}
if (inBracket)
{
_node += ch;
continue;
}
if (inService)
{
_service += ch;
continue;
}
if (not inService and ch == ':')
{
inService = true;
continue;
}
if (not inService)
{
_node += ch;
continue;
}
}
}
SoapyURL::SoapyURL(const struct sockaddr *addr)
{
char *s = NULL;
switch(addr->sa_family)
{
case AF_INET: {
auto *addr_in = (const struct sockaddr_in *)addr;
s = (char *)malloc(INET_ADDRSTRLEN);
inet_ntop(AF_INET, (void *)&(addr_in->sin_addr), s, INET_ADDRSTRLEN);
_node = s;
_service = std::to_string(ntohs(addr_in->sin_port));
break;
}
case AF_INET6: {
auto *addr_in6 = (const struct sockaddr_in6 *)addr;
s = (char *)malloc(INET6_ADDRSTRLEN);
inet_ntop(AF_INET6, (void *)&(addr_in6->sin6_addr), s, INET6_ADDRSTRLEN);
_node = s;
//support scoped address node
if (addr_in6->sin6_scope_id != 0)
{
_node += "%" + std::to_string(addr_in6->sin6_scope_id);
}
_service = std::to_string(ntohs(addr_in6->sin6_port));
break;
}
default:
break;
}
free(s);
}
SoapyURL::SoapyURL(const SockAddrData &addr)
{
*this = SoapyURL(addr.addr());
}
std::string SoapyURL::toSockAddr(SockAddrData &addr) const
{
SockAddrData result;
//unspecified service, cant continue
if (_service.empty()) return "service not specified";
//configure the hint
struct addrinfo hints, *servinfo = NULL;
std::memset(&hints, 0, sizeof(hints));
hints.ai_family = AF_UNSPEC; // use AF_INET6 to force IPv6
hints.ai_socktype = this->getType();
//get address info
int ret = getaddrinfo(_node.c_str(), _service.c_str(), &hints, &servinfo);
if (ret != 0) return gai_strerror(ret);
//iterate through possible matches
struct addrinfo *p = NULL;
for (p = servinfo; p != NULL; p = p->ai_next)
{
//eliminate unsupported family types
if (p->ai_family != AF_INET and p->ai_family != AF_INET6) continue;
//found a match
assert(p->ai_family == p->ai_addr->sa_family);
addr = SockAddrData(p->ai_addr, p->ai_addrlen);
break;
}
//cleanup
freeaddrinfo(servinfo);
//no results
if (p == NULL) return "no lookup results";
return ""; //OK
}
std::string SoapyURL::toString(void) const
{
std::string url;
//add the scheme
if (not _scheme.empty()) url += _scheme + "://";
//add the node with ipv6 escape brackets
if (_node.find(":") != std::string::npos) url += "[" + _node + "]";
else url += _node;
//and the service
if (not _service.empty()) url += ":" + _service;
return url;
}
std::string SoapyURL::getScheme(void) const
{
return _scheme;
}
std::string SoapyURL::getNode(void) const
{
return _node;
}
std::string SoapyURL::getService(void) const
{
return _service;
}
void SoapyURL::setScheme(const std::string &scheme)
{
_scheme = scheme;
}
void SoapyURL::setNode(const std::string &node)
{
_node = node;
}
void SoapyURL::setService(const std::string &service)
{
_service = service;
}
int SoapyURL::getType(void) const
{
if (_scheme == "tcp") return SOCK_STREAM;
if (_scheme == "udp") return SOCK_DGRAM;
return SOCK_STREAM; //assume
}
|
