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
|
/*
*
* oFono - Open Source Telephony
*
* Copyright (C) 2009-2010 Nokia Corporation and/or its subsidiary(-ies).
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdint.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <unistd.h>
#include <net/if.h>
#include <fcntl.h>
#include "modem.h"
#include "phonet.h"
#include <glib.h>
#include "socket.h"
GIOChannel *phonet_new(GIsiModem *modem, uint8_t resource)
{
GIOChannel *channel;
struct sockaddr_pn addr = {
.spn_family = AF_PHONET,
.spn_resource = resource,
};
unsigned ifi = g_isi_modem_index(modem);
char buf[IF_NAMESIZE];
int fd = socket(PF_PHONET, SOCK_DGRAM, 0);
if (fd == -1)
return NULL;
fcntl(fd, F_SETFD, FD_CLOEXEC);
/* Use blocking mode on purpose. */
if (ifi == 0)
g_warning("Unspecified GIsiModem!");
else if (if_indextoname(ifi, buf) == NULL ||
setsockopt(fd, SOL_SOCKET, SO_BINDTODEVICE, buf, IF_NAMESIZE))
goto error;
if (bind(fd, (void *)&addr, sizeof(addr)))
goto error;
channel = g_io_channel_unix_new(fd);
g_io_channel_set_close_on_unref(channel, TRUE);
g_io_channel_set_encoding(channel, NULL, NULL);
g_io_channel_set_buffered(channel, FALSE);
return channel;
error:
close(fd);
return NULL;
}
size_t phonet_peek_length(GIOChannel *channel)
{
int len;
int fd = g_io_channel_unix_get_fd(channel);
return ioctl(fd, FIONREAD, &len) ? 0 : len;
}
ssize_t phonet_read(GIOChannel *channel, void *restrict buf, size_t len,
uint16_t *restrict obj, uint8_t *restrict res)
{
struct sockaddr_pn addr;
socklen_t addrlen = sizeof(addr);
ssize_t ret;
ret = recvfrom(g_io_channel_unix_get_fd(channel), buf, len,
MSG_DONTWAIT, (void *)&addr, &addrlen);
if (ret == -1)
return -1;
if (obj != NULL)
*obj = (addr.spn_dev << 8) | addr.spn_obj;
if (res != NULL)
*res = addr.spn_resource;
return ret;
}
|
