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
|
/* $Id$ */
/***
This file is part of polypaudio.
polypaudio is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
by the Free Software Foundation; either version 2 of the License,
or (at your option) any later version.
polypaudio 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 polypaudio; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.
***/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdlib.h>
#include <assert.h>
#include <errno.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <stdio.h>
#include <unistd.h>
#include <sys/un.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include "socket-server.h"
#include "socket-util.h"
struct pa_socket_server {
int fd;
char *filename;
void (*on_connection)(struct pa_socket_server*s, struct pa_iochannel *io, void *userdata);
void *userdata;
void *mainloop_source;
struct pa_mainloop_api *mainloop;
enum { SOCKET_SERVER_GENERIC, SOCKET_SERVER_IPV4, SOCKET_SERVER_UNIX } type;
};
static void callback(struct pa_mainloop_api *mainloop, void *id, int fd, enum pa_mainloop_api_io_events events, void *userdata) {
struct pa_socket_server *s = userdata;
struct pa_iochannel *io;
int nfd;
assert(s && s->mainloop == mainloop && s->mainloop_source == id && id && fd >= 0 && fd == s->fd && events == PA_MAINLOOP_API_IO_EVENT_INPUT);
if ((nfd = accept(fd, NULL, NULL)) < 0) {
fprintf(stderr, "accept(): %s\n", strerror(errno));
return;
}
if (!s->on_connection) {
close(nfd);
return;
}
/* There should be a check for socket type here */
if (s->type == SOCKET_SERVER_IPV4)
pa_socket_tcp_low_delay(fd);
else
pa_socket_low_delay(fd);
io = pa_iochannel_new(s->mainloop, nfd, nfd);
assert(io);
s->on_connection(s, io, s->userdata);
}
struct pa_socket_server* pa_socket_server_new(struct pa_mainloop_api *m, int fd) {
struct pa_socket_server *s;
assert(m && fd >= 0);
s = malloc(sizeof(struct pa_socket_server));
assert(s);
s->fd = fd;
s->filename = NULL;
s->on_connection = NULL;
s->userdata = NULL;
s->mainloop = m;
s->mainloop_source = m->source_io(m, fd, PA_MAINLOOP_API_IO_EVENT_INPUT, callback, s);
assert(s->mainloop_source);
s->type = SOCKET_SERVER_GENERIC;
return s;
}
struct pa_socket_server* pa_socket_server_new_unix(struct pa_mainloop_api *m, const char *filename) {
int fd = -1;
struct sockaddr_un sa;
struct pa_socket_server *s;
assert(m && filename);
if ((fd = socket(PF_LOCAL, SOCK_STREAM, 0)) < 0) {
fprintf(stderr, "socket(): %s\n", strerror(errno));
goto fail;
}
sa.sun_family = AF_LOCAL;
strncpy(sa.sun_path, filename, sizeof(sa.sun_path)-1);
sa.sun_path[sizeof(sa.sun_path) - 1] = 0;
pa_socket_low_delay(fd);
if (bind(fd, (struct sockaddr*) &sa, SUN_LEN(&sa)) < 0) {
fprintf(stderr, "bind(): %s\n", strerror(errno));
goto fail;
}
if (listen(fd, 5) < 0) {
fprintf(stderr, "listen(): %s\n", strerror(errno));
goto fail;
}
s = pa_socket_server_new(m, fd);
assert(s);
s->filename = strdup(filename);
assert(s->filename);
s->type = SOCKET_SERVER_UNIX;
return s;
fail:
if (fd >= 0)
close(fd);
return NULL;
}
struct pa_socket_server* pa_socket_server_new_ipv4(struct pa_mainloop_api *m, uint32_t address, uint16_t port) {
struct pa_socket_server *ss;
int fd = -1;
struct sockaddr_in sa;
int on = 1;
assert(m && port);
if ((fd = socket(PF_INET, SOCK_STREAM, 0)) < 0) {
fprintf(stderr, "socket(): %s\n", strerror(errno));
goto fail;
}
if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on)) < 0)
fprintf(stderr, "setsockopt(): %s\n", strerror(errno));
pa_socket_tcp_low_delay(fd);
sa.sin_family = AF_INET;
sa.sin_port = htons(port);
sa.sin_addr.s_addr = htonl(address);
if (bind(fd, (struct sockaddr *) &sa, sizeof(sa)) < 0) {
fprintf(stderr, "bind(): %s\n", strerror(errno));
goto fail;
}
if (listen(fd, 5) < 0) {
fprintf(stderr, "listen(): %s\n", strerror(errno));
goto fail;
}
if ((ss = pa_socket_server_new(m, fd)))
ss->type = SOCKET_SERVER_IPV4;
return ss;
fail:
if (fd >= 0)
close(fd);
return NULL;
}
void pa_socket_server_free(struct pa_socket_server*s) {
assert(s);
close(s->fd);
if (s->filename) {
unlink(s->filename);
free(s->filename);
}
s->mainloop->cancel_io(s->mainloop, s->mainloop_source);
free(s);
}
void pa_socket_server_set_callback(struct pa_socket_server*s, void (*on_connection)(struct pa_socket_server*s, struct pa_iochannel *io, void *userdata), void *userdata) {
assert(s);
s->on_connection = on_connection;
s->userdata = userdata;
}
|
