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
|
#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"
struct socket_server {
int fd;
char *filename;
void (*on_connection)(struct socket_server*s, struct iochannel *io, void *userdata);
void *userdata;
struct mainloop_source *mainloop_source;
};
static void callback(struct mainloop_source*src, int fd, enum mainloop_io_event event, void *userdata) {
struct socket_server *s = userdata;
struct iochannel *io;
int nfd;
assert(src && fd >= 0 && fd == s->fd && event == MAINLOOP_IO_EVENT_IN && s);
if ((nfd = accept(fd, NULL, NULL)) < 0) {
fprintf(stderr, "accept(): %s\n", strerror(errno));
return;
}
if (!s->on_connection) {
close(nfd);
return;
}
io = iochannel_new(mainloop_source_get_mainloop(src), nfd, nfd);
assert(io);
s->on_connection(s, io, s->userdata);
}
struct socket_server* socket_server_new(struct mainloop *m, int fd) {
struct socket_server *s;
assert(m && fd >= 0);
s = malloc(sizeof(struct socket_server));
assert(s);
s->fd = fd;
s->filename = NULL;
s->on_connection = NULL;
s->userdata = NULL;
s->mainloop_source = mainloop_source_new_io(m, fd, MAINLOOP_IO_EVENT_IN, callback, s);
assert(s->mainloop_source);
return s;
}
struct socket_server* socket_server_new_unix(struct mainloop *m, const char *filename) {
int fd = -1;
struct sockaddr_un sa;
struct 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;
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 = socket_server_new(m, fd);
assert(s);
s->filename = strdup(filename);
assert(s->filename);
return s;
fail:
if (fd >= 0)
close(fd);
return NULL;
}
struct socket_server* socket_server_new_ipv4(struct mainloop *m, uint32_t address, uint16_t port) {
int fd = -1;
struct sockaddr_in sa;
assert(m && port);
if ((fd = socket(PF_INET, SOCK_STREAM, 0)) < 0) {
fprintf(stderr, "socket(): %s\n", strerror(errno));
goto fail;
}
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;
}
return socket_server_new(m, fd);
fail:
if (fd >= 0)
close(fd);
return NULL;
}
void socket_server_free(struct socket_server*s) {
assert(s);
close(s->fd);
if (s->filename) {
unlink(s->filename);
free(s->filename);
}
mainloop_source_free(s->mainloop_source);
free(s);
}
void socket_server_set_callback(struct socket_server*s, void (*on_connection)(struct socket_server*s, struct iochannel *io, void *userdata), void *userdata) {
assert(s);
s->on_connection = on_connection;
s->userdata = userdata;
}
|
