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
|
/*
* BibleSync library
* biblesync.cc
*
* Karl Kleinpaste, May 2014
*
* All files related to implementation of BibleSync, including program
* source, READMEs, manual pages, and related similar documents, are in
* the public domain. As a matter of simple decency, your social
* obligations are to credit the source and to coordinate any changes you
* make back to the origin repository. These obligations are non-
* binding for public domain software, but they are to be seriously
* handled nonetheless.
*/
#include <sys/types.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#include <stdio.h>
#include <stdlib.h>
#include <memory.h>
#include <string.h>
#define BSP_MULTICAST "239.225.27.227"
#define BSP_PORT 22272
struct in_addr localInterface;
struct sockaddr_in groupSock;
int sd;
int datalen;
char databuf[1024];
unsigned char header[] = {
0x40, 0x9c, 0xaf, 0x11, 0x02, 0x02, 0x01, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77,
0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff
};
unsigned char body[] = ""
"app.name=MUMBLE\n"
"app.version=4.3.2.1.0\n"
"app.inst.uuid=00112233-4455-6677-8899-aabbccddeeff\n"
"app.os=FAKE=OS\n"
"app.device=6809 running BeOS\n"
"app.user=BSP Tester (bsp)\n"
"msg.sync.passPhrase=RandomPhrase\n"
"msg.sync.domain=BIBLE-VERSE\n"
"msg.sync.group=1\n"
"msg.sync.bibleAbbrev=KJV\n"
"msg.sync.altVerse=\n"
"msg.sync.verse=Gen.1.1\n"
"";
unsigned char message[1281],
*mptr = &message[32]; /* point at message body. */
/*
* argv[1] == local interface address
* argv[2] == 1 or 2
* argv[3] == other args
* other args must be quoted on the command line w/trailing '\n'.
* $ ./send-test 192.168.1.27 2 'msg.sync.passPhrase=TestPhrase
* > '
* you can add as many other things here as you like,
* all quoted/newlined as one arg.
*/
int main (int argc, char *argv[])
{
if ((argc != 3) && (argc != 4))
{
perror("arg count");
exit(1);
}
/* ------------------------------------------------------------*/
/* */
/* Send Multicast Datagram code example. */
/* */
/* ------------------------------------------------------------*/
/*
* Create a datagram socket on which to send.
*/
sd = socket(AF_INET, SOCK_DGRAM, 0);
if (sd < 0) {
perror("opening datagram socket");
exit(1);
}
/*
* Initialize the group sockaddr structure with a
* group address of 225.1.1.1 and port 5555.
*/
memset((char *) &groupSock, 0, sizeof(groupSock));
groupSock.sin_family = AF_INET;
groupSock.sin_addr.s_addr = inet_addr(BSP_MULTICAST);
groupSock.sin_port = htons(BSP_PORT);
/*
* Disable loopback so you do not receive your own datagrams.
*/
{
char loopch=1;
if (setsockopt(sd, IPPROTO_IP, IP_MULTICAST_LOOP,
(char *)&loopch, sizeof(loopch)) < 0) {
perror("setting IP_MULTICAST_LOOP:");
close(sd);
exit(1);
}
}
/*
* Set local interface for outbound multicast datagrams.
* The IP address specified must be associated with a local,
* multicast-capable interface.
*/
localInterface.s_addr = inet_addr(argv[1]);
if (setsockopt(sd, IPPROTO_IP, IP_MULTICAST_IF,
(char *)&localInterface,
sizeof(localInterface)) < 0) {
perror("setting local interface");
exit(1);
}
/*
* Send a message to the multicast group specified by the
* groupSock sockaddr structure.
*/
memcpy(message, header, 32);
message[5] = atoi(argv[2]);
strcpy(mptr, body);
if (argv[3])
strcat(mptr, argv[3]);
if (sendto(sd, message, 32+strlen(mptr), 0,
(struct sockaddr*)&groupSock,
sizeof(groupSock)) < 0)
{
perror("sending datagram message");
}
}
|
