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
|
/*
* Copyright (C) 2003-2013 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 "config.h"
#include "MessageCommands.hxx"
#include "ClientSubscribe.hxx"
#include "ClientInternal.hxx"
#include "protocol/Result.hxx"
#include "protocol/ArgParser.hxx"
#include <set>
#include <string>
#include <assert.h>
enum command_return
handle_subscribe(Client *client, G_GNUC_UNUSED int argc, char *argv[])
{
assert(argc == 2);
switch (client_subscribe(client, argv[1])) {
case CLIENT_SUBSCRIBE_OK:
return COMMAND_RETURN_OK;
case CLIENT_SUBSCRIBE_INVALID:
command_error(client, ACK_ERROR_ARG,
"invalid channel name");
return COMMAND_RETURN_ERROR;
case CLIENT_SUBSCRIBE_ALREADY:
command_error(client, ACK_ERROR_EXIST,
"already subscribed to this channel");
return COMMAND_RETURN_ERROR;
case CLIENT_SUBSCRIBE_FULL:
command_error(client, ACK_ERROR_EXIST,
"subscription list is full");
return COMMAND_RETURN_ERROR;
}
/* unreachable */
return COMMAND_RETURN_OK;
}
enum command_return
handle_unsubscribe(Client *client, G_GNUC_UNUSED int argc, char *argv[])
{
assert(argc == 2);
if (client_unsubscribe(client, argv[1]))
return COMMAND_RETURN_OK;
else {
command_error(client, ACK_ERROR_NO_EXIST,
"not subscribed to this channel");
return COMMAND_RETURN_ERROR;
}
}
struct channels_context {
std::set<std::string> channels;
};
static void
collect_channels(gpointer data, gpointer user_data)
{
struct channels_context *context =
(struct channels_context *)user_data;
const Client *client = (const Client *)data;
context->channels.insert(client->subscriptions.begin(),
client->subscriptions.end());
}
enum command_return
handle_channels(Client *client,
G_GNUC_UNUSED int argc, G_GNUC_UNUSED char *argv[])
{
assert(argc == 1);
struct channels_context context;
client_list_foreach(collect_channels, &context);
for (const auto &channel : context.channels)
client_printf(client, "channel: %s\n", channel.c_str());
return COMMAND_RETURN_OK;
}
enum command_return
handle_read_messages(Client *client,
G_GNUC_UNUSED int argc, G_GNUC_UNUSED char *argv[])
{
assert(argc == 1);
while (!client->messages.empty()) {
const ClientMessage &msg = client->messages.front();
client_printf(client, "channel: %s\nmessage: %s\n",
msg.GetChannel(), msg.GetMessage());
client->messages.pop_front();
}
return COMMAND_RETURN_OK;
}
struct send_message_context {
ClientMessage msg;
bool sent;
template<typename T, typename U>
send_message_context(T &&_channel, U &&_message)
:msg(std::forward<T>(_channel), std::forward<U>(_message)),
sent(false) {}
};
static void
send_message(gpointer data, gpointer user_data)
{
struct send_message_context *context =
(struct send_message_context *)user_data;
Client *client = (Client *)data;
if (client_push_message(client, context->msg))
context->sent = true;
}
enum command_return
handle_send_message(Client *client,
G_GNUC_UNUSED int argc, G_GNUC_UNUSED char *argv[])
{
assert(argc == 3);
if (!client_message_valid_channel_name(argv[1])) {
command_error(client, ACK_ERROR_ARG,
"invalid channel name");
return COMMAND_RETURN_ERROR;
}
struct send_message_context context(argv[1], argv[2]);
client_list_foreach(send_message, &context);
if (context.sent)
return COMMAND_RETURN_OK;
else {
command_error(client, ACK_ERROR_NO_EXIST,
"nobody is subscribed to this channel");
return COMMAND_RETURN_ERROR;
}
}
|
