/
ctrl_iface.h
159 lines (138 loc) · 5.36 KB
/
ctrl_iface.h
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
/*
* WPA Supplicant / UNIX domain socket -based control interface
* Copyright (c) 2004-2005, Jouni Malinen <j@w1.fi>
*
* 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.
*
* Alternatively, this software may be distributed under the terms of BSD
* license.
*
* See README and COPYING for more details.
*/
#ifndef CTRL_IFACE_H
#define CTRL_IFACE_H
#ifdef CONFIG_CTRL_IFACE
/* Shared functions from ctrl_iface.c; to be called by ctrl_iface backends */
/**
* wpa_supplicant_ctrl_iface_process - Process ctrl_iface command
* @wpa_s: Pointer to wpa_supplicant data
* @buf: Received command buffer (nul terminated string)
* @resp_len: Variable to be set to the response length
* Returns: Response (*resp_len bytes) or %NULL on failure
*
* Control interface backends call this function when receiving a message that
* they do not process internally, i.e., anything else than ATTACH, DETACH,
* and LEVEL. The return response value is then sent to the external program
* that sent the command. Caller is responsible for freeing the buffer after
* this. If %NULL is returned, *resp_len can be set to two special values:
* 1 = send "FAIL\n" response, 2 = send "OK\n" response. If *resp_len has any
* other value, no response is sent.
*/
char * wpa_supplicant_ctrl_iface_process(struct wpa_supplicant *wpa_s,
char *buf, size_t *resp_len);
/**
* wpa_supplicant_ctrl_iface_process - Process global ctrl_iface command
* @global: Pointer to global data from wpa_supplicant_init()
* @buf: Received command buffer (nul terminated string)
* @resp_len: Variable to be set to the response length
* Returns: Response (*resp_len bytes) or %NULL on failure
*
* Control interface backends call this function when receiving a message from
* the global ctrl_iface connection. The return response value is then sent to
* the external program that sent the command. Caller is responsible for
* freeing the buffer after this. If %NULL is returned, *resp_len can be set to
* two special values: 1 = send "FAIL\n" response, 2 = send "OK\n" response. If
* *resp_len has any other value, no response is sent.
*/
char * wpa_supplicant_global_ctrl_iface_process(struct wpa_global *global,
char *buf, size_t *resp_len);
/* Functions that each ctrl_iface backend must implement */
/**
* wpa_supplicant_ctrl_iface_init - Initialize control interface
* @wpa_s: Pointer to wpa_supplicant data
* Returns: Pointer to private data on success, %NULL on failure
*
* Initialize the control interface and start receiving commands from external
* programs.
*
* Required to be implemented in each control interface backend.
*/
struct ctrl_iface_priv *
wpa_supplicant_ctrl_iface_init(struct wpa_supplicant *wpa_s);
/**
* wpa_supplicant_ctrl_iface_deinit - Deinitialize control interface
* @priv: Pointer to private data from wpa_supplicant_ctrl_iface_init()
*
* Deinitialize the control interface that was initialized with
* wpa_supplicant_ctrl_iface_init().
*
* Required to be implemented in each control interface backend.
*/
void wpa_supplicant_ctrl_iface_deinit(struct ctrl_iface_priv *priv);
/**
* wpa_supplicant_ctrl_iface_wait - Wait for ctrl_iface monitor
* @priv: Pointer to private data from wpa_supplicant_ctrl_iface_init()
*
* Wait until the first message from an external program using the control
* interface is received. This function can be used to delay normal startup
* processing to allow control interface programs to attach with
* %wpa_supplicant before normal operations are started.
*
* Required to be implemented in each control interface backend.
*/
void wpa_supplicant_ctrl_iface_wait(struct ctrl_iface_priv *priv);
/**
* wpa_supplicant_global_ctrl_iface_init - Initialize global control interface
* @global: Pointer to global data from wpa_supplicant_init()
* Returns: Pointer to private data on success, %NULL on failure
*
* Initialize the global control interface and start receiving commands from
* external programs.
*
* Required to be implemented in each control interface backend.
*/
struct ctrl_iface_global_priv *
wpa_supplicant_global_ctrl_iface_init(struct wpa_global *global);
/**
* wpa_supplicant_global_ctrl_iface_deinit - Deinitialize global ctrl interface
* @priv: Pointer to private data from wpa_supplicant_global_ctrl_iface_init()
*
* Deinitialize the global control interface that was initialized with
* wpa_supplicant_global_ctrl_iface_init().
*
* Required to be implemented in each control interface backend.
*/
void wpa_supplicant_global_ctrl_iface_deinit(
struct ctrl_iface_global_priv *priv);
#else /* CONFIG_CTRL_IFACE */
static inline struct ctrl_iface_priv *
wpa_supplicant_ctrl_iface_init(struct wpa_supplicant *wpa_s)
{
return (void *) -1;
}
static inline void
wpa_supplicant_ctrl_iface_deinit(struct ctrl_iface_priv *priv)
{
}
static inline void
wpa_supplicant_ctrl_iface_send(struct ctrl_iface_priv *priv, int level,
char *buf, size_t len)
{
}
static inline void
wpa_supplicant_ctrl_iface_wait(struct ctrl_iface_priv *priv)
{
}
static inline struct ctrl_iface_global_priv *
wpa_supplicant_global_ctrl_iface_init(struct wpa_global *global)
{
return (void *) 1;
}
static inline void
wpa_supplicant_global_ctrl_iface_deinit(struct ctrl_iface_global_priv *priv)
{
}
#endif /* CONFIG_CTRL_IFACE */
#endif /* CTRL_IFACE_H */