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
|
/*
* Copyright (C) 2003-2009 The Music Player Daemon Project
* http://www.musicpd.org
*
* This program 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.
*
* 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 Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "client_internal.h"
#include "fifo_buffer.h"
#include "socket_util.h"
#include "permission.h"
#include "config.h"
#include <assert.h>
#include <unistd.h>
#define LOG_LEVEL_SECURE G_LOG_LEVEL_INFO
static const char GREETING[] = "OK MPD " PROTOCOL_VERSION "\n";
void client_new(int fd, const struct sockaddr *sa, size_t sa_length, int uid)
{
static unsigned int next_client_num;
struct client *client;
char *remote;
assert(fd >= 0);
if (client_list_is_full()) {
g_warning("Max Connections Reached!");
close(fd);
return;
}
client = g_new0(struct client, 1);
#ifndef G_OS_WIN32
client->channel = g_io_channel_unix_new(fd);
#else
client->channel = g_io_channel_win32_new_socket(fd);
#endif
/* GLib is responsible for closing the file descriptor */
g_io_channel_set_close_on_unref(client->channel, true);
/* NULL encoding means the stream is binary safe; the MPD
protocol is UTF-8 only, but we are doing this call anyway
to prevent GLib from messing around with the stream */
g_io_channel_set_encoding(client->channel, NULL, NULL);
/* we prefer to do buffering */
g_io_channel_set_buffered(client->channel, false);
client->source_id = g_io_add_watch(client->channel,
G_IO_IN|G_IO_ERR|G_IO_HUP,
client_in_event, client);
client->input = fifo_buffer_new(4096);
client->permission = getDefaultPermissions();
client->uid = uid;
client->last_activity = g_timer_new();
client->cmd_list = NULL;
client->cmd_list_OK = -1;
client->cmd_list_size = 0;
client->deferred_send = g_queue_new();
client->deferred_bytes = 0;
client->num = next_client_num++;
client->send_buf_used = 0;
(void)write(fd, GREETING, sizeof(GREETING) - 1);
client_list_add(client);
remote = sockaddr_to_string(sa, sa_length, NULL);
g_log(G_LOG_DOMAIN, LOG_LEVEL_SECURE,
"[%u] opened from %s", client->num, remote);
g_free(remote);
}
static void
deferred_buffer_free(gpointer data, G_GNUC_UNUSED gpointer user_data)
{
struct deferred_buffer *buffer = data;
g_free(buffer);
}
void
client_close(struct client *client)
{
client_list_remove(client);
client_set_expired(client);
g_timer_destroy(client->last_activity);
if (client->cmd_list) {
free_cmd_list(client->cmd_list);
client->cmd_list = NULL;
}
g_queue_foreach(client->deferred_send, deferred_buffer_free, NULL);
g_queue_free(client->deferred_send);
fifo_buffer_free(client->input);
g_log(G_LOG_DOMAIN, LOG_LEVEL_SECURE,
"[%u] closed", client->num);
g_free(client);
}
|
