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
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
|
// SOCK_Dgram_Bcast.cpp
// $Id$
#define ACE_BUILD_DLL
#include "ace/SOCK_Dgram_Bcast.h"
#include "ace/Log_Msg.h"
ACE_ALLOC_HOOK_DEFINE(ACE_SOCK_Dgram_Bcast)
ACE_Bcast_Node::ACE_Bcast_Node (ACE_INET_Addr &addr,
ACE_Bcast_Node *next)
: bcast_addr_ (addr),
next_ (next)
{
ACE_TRACE ("ACE_Bcast_Node::ACE_Bcast_Node");
}
void
ACE_SOCK_Dgram_Bcast::dump (void) const
{
ACE_TRACE ("ACE_SOCK_Dgram_Bcast::dump");
}
// Close up and release resources.
int
ACE_SOCK_Dgram_Bcast::close (void)
{
ACE_TRACE ("ACE_SOCK_Dgram_Bcast::close");
ACE_Bcast_Node *temp = this->if_list_;
// Release the dynamically allocated memory.
while (temp != 0)
{
ACE_Bcast_Node *hold = temp->next_;
delete temp;
temp = hold;
}
// Shut down the descriptor.
return ACE_SOCK::close ();
}
// Here's the simple-minded constructor.
ACE_SOCK_Dgram_Bcast::ACE_SOCK_Dgram_Bcast (void)
: if_list_ (0)
{
ACE_TRACE ("ACE_SOCK_Dgram_Bcast::ACE_SOCK_Dgram_Bcast");
}
// Here's the general-purpose constructor used by a connectionless
// datagram ``server''...
ACE_SOCK_Dgram_Bcast::ACE_SOCK_Dgram_Bcast (const ACE_Addr &local,
int protocol_family,
int protocol)
: ACE_SOCK_Dgram (local, protocol_family, protocol),
if_list_ (0)
{
ACE_TRACE ("ACE_SOCK_Dgram_Bcast::ACE_SOCK_Dgram_Bcast");
if (this->mk_broadcast () == -1)
ACE_ERROR ((LM_ERROR, "%p\n", "ACE_SOCK_Dgram_Bcast"));
}
// Here's the general-purpose open routine.
int
ACE_SOCK_Dgram_Bcast::open (const ACE_Addr &local,
int protocol_family,
int protocol)
{
ACE_TRACE ("ACE_SOCK_Dgram_Bcast::open");
if (this->ACE_SOCK_Dgram::open (local, protocol_family,
protocol) == -1)
return -1;
return this->mk_broadcast ();
}
// Make broadcast available for Datagram socket.
int
ACE_SOCK_Dgram_Bcast::mk_broadcast (void)
{
ACE_TRACE ("ACE_SOCK_Dgram_Bcast::mk_broadcast");
int one = 1;
if (ACE_OS::setsockopt (this->get_handle (), SOL_SOCKET, SO_BROADCAST,
(char *) &one, sizeof one) == -1)
return -1;
#if !defined(ACE_WIN32)
char buf[BUFSIZ];
struct ifconf ifc;
struct ifreq *ifr;
struct ifreq flags;
struct ifreq if_req;
int s = this->get_handle ();
ifc.ifc_len = sizeof buf;
ifc.ifc_buf = buf;
// Get interface structure and initialize the addresses using UNIX techniques.
if (ACE_OS::ioctl (s, SIOCGIFCONF, (char *) &ifc) == -1)
ACE_ERROR_RETURN ((LM_ERROR, "%p\n",
"ACE_SOCK_Dgram_Bcast::mk_broadcast: ioctl (get interface configuration)"),
ACE_INVALID_HANDLE);
ifr = ifc.ifc_req;
for (int n = ifc.ifc_len / sizeof (struct ifreq) ; n > 0; n--, ifr++)
{
if (ifr->ifr_addr.sa_family != AF_INET)
{
ACE_ERROR ((LM_ERROR, "%p\n", "ACE_SOCK_Dgram_Bcast::mk_broadcast: Not AF_INET"));
continue;
}
flags = if_req = *ifr;
if (ACE_OS::ioctl (s, SIOCGIFFLAGS, (char *) &flags) == -1)
{
ACE_ERROR ((LM_ERROR, "%p\n",
"ACE_SOCK_Dgram_Bcast::mk_broadcast: ioctl (get interface flags)"));
continue;
}
if (ACE_BIT_ENABLED (flags.ifr_flags, IFF_UP) == 0)
{
ACE_ERROR ((LM_ERROR, "%p\n",
"ACE_SOCK_Dgram_Bcast::mk_broadcast: Network interface is not up"));
continue;
}
if (ACE_BIT_ENABLED (flags.ifr_flags, IFF_LOOPBACK))
continue;
if (ACE_BIT_ENABLED (flags.ifr_flags, IFF_BROADCAST))
{
if (ACE_OS::ioctl (s, SIOCGIFBRDADDR, (char *) &if_req) == -1)
ACE_ERROR ((LM_ERROR, "%p\n",
"ACE_SOCK_Dgram_Bcast::mk_broadcast: ioctl (get broadaddr)"));
else
{
ACE_INET_Addr addr ((sockaddr_in *) &if_req.ifr_broadaddr,
sizeof if_req.ifr_broadaddr);
ACE_NEW_RETURN (this->if_list_, ACE_Bcast_Node (addr, this->if_list_), -1);
}
}
else
ACE_ERROR ((LM_ERROR, "%p\n",
"ACE_SOCK_Dgram_Bcast::mk_broadcast: Broadcast is not enable for this interface."));
}
#else
ACE_INET_Addr addr (u_short (0), ACE_UINT32 (INADDR_BROADCAST));
ACE_NEW_RETURN (this->if_list_, ACE_Bcast_Node (addr, this->if_list_), -1);
#endif /* !ACE_WIN32 */
return this->if_list_ == 0 ? -1 : 0;
}
// Broadcast the datagram to every interface. Returns the average
// number of bytes sent.
ssize_t
ACE_SOCK_Dgram_Bcast::send (const void *buf,
size_t n,
u_short port_number,
int flags) const
{
ACE_TRACE ("ACE_SOCK_Dgram_Bcast::send");
size_t iterations = 0;
ssize_t total_bytes = 0;
if (this->if_list_ == 0)
return -1;
for (ACE_Bcast_Node *temp = this->if_list_;
temp != 0;
temp = temp->next_)
{
temp->bcast_addr_.set_port_number (port_number);
ssize_t bytes_sent = ACE_SOCK_Dgram::send (buf, n,
temp->bcast_addr_,
flags);
if (bytes_sent == -1)
return -1;
else
total_bytes += bytes_sent;
iterations++;
}
return iterations == 0 ? 0 : total_bytes / iterations;
}
#if defined (ACE_HAS_MSG)
// Broadcast datagram to every interfaces.
ssize_t
ACE_SOCK_Dgram_Bcast::send (const iovec iov[],
size_t n,
u_short /* port_number */,
int flags) const
{
ACE_TRACE ("ACE_SOCK_Dgram_Bcast::send");
if (this->if_list_ == 0)
return -1;
// Send the message to every interface.
for (ACE_Bcast_Node *temp = this->if_list_; temp != 0; temp++)
if (ACE_SOCK_Dgram::send (iov, n, temp->bcast_addr_, flags) == -1)
return -1;
return 0;
}
// Broadcast an ACE_IO_Vector of size N to ADDR as a datagram (note
// that addr must be preassigned to the broadcast address of the
// subnet...).
ssize_t
ACE_SOCK_Dgram_Bcast::send (const iovec iov[],
size_t n,
const ACE_Addr &addr,
int flags) const
{
ACE_TRACE ("ACE_SOCK_Dgram_Bcast::send");
return ACE_SOCK_Dgram::send (iov, n, addr, flags);
}
#endif /* ACE_HAS_MSG */
|
