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
|
package dbus
import (
"encoding/json"
"errors"
"io"
"os"
"strings"
)
// ProxyPair is an upstream dbus address and a downstream socket path.
type ProxyPair [2]string
type Config struct {
// See set 'see' policy for NAME (--see=NAME)
See []string `json:"see"`
// Talk set 'talk' policy for NAME (--talk=NAME)
Talk []string `json:"talk"`
// Own set 'own' policy for NAME (--own=NAME)
Own []string `json:"own"`
// Call set RULE for calls on NAME (--call=NAME=RULE)
Call map[string]string `json:"call"`
// Broadcast set RULE for broadcasts from NAME (--broadcast=NAME=RULE)
Broadcast map[string]string `json:"broadcast"`
Log bool `json:"log,omitempty"`
Filter bool `json:"filter"`
}
func (c *Config) interfaces(yield func(string) bool) {
for _, iface := range c.See {
if !yield(iface) {
return
}
}
for _, iface := range c.Talk {
if !yield(iface) {
return
}
}
for _, iface := range c.Own {
if !yield(iface) {
return
}
}
for iface := range c.Call {
if !yield(iface) {
return
}
}
for iface := range c.Broadcast {
if !yield(iface) {
return
}
}
}
func (c *Config) checkInterfaces(segment string) error {
for iface := range c.interfaces {
/*
xdg-dbus-proxy fails without output when this condition is not met:
char *dot = strrchr (filter->interface, '.');
if (dot != NULL)
{
*dot = 0;
if (strcmp (dot + 1, "*") != 0)
filter->member = g_strdup (dot + 1);
}
trim ".*" since they are removed before searching for '.':
if (g_str_has_suffix (name, ".*"))
{
name[strlen (name) - 2] = 0;
wildcard = TRUE;
}
*/
if strings.IndexByte(strings.TrimSuffix(iface, ".*"), '.') == -1 {
return &BadInterfaceError{iface, segment}
}
}
return nil
}
func (c *Config) Args(bus ProxyPair) (args []string) {
argc := 2 + len(c.See) + len(c.Talk) + len(c.Own) + len(c.Call) + len(c.Broadcast)
if c.Log {
argc++
}
if c.Filter {
argc++
}
args = make([]string, 0, argc)
args = append(args, bus[0], bus[1])
if c.Filter {
args = append(args, "--filter")
}
for _, name := range c.See {
args = append(args, "--see="+name)
}
for _, name := range c.Talk {
args = append(args, "--talk="+name)
}
for _, name := range c.Own {
args = append(args, "--own="+name)
}
for name, rule := range c.Call {
args = append(args, "--call="+name+"="+rule)
}
for name, rule := range c.Broadcast {
args = append(args, "--broadcast="+name+"="+rule)
}
if c.Log {
args = append(args, "--log")
}
return
}
func (c *Config) Load(r io.Reader) error { return json.NewDecoder(r).Decode(&c) }
// NewConfigFromFile opens the target config file at path and parses its contents into *Config.
func NewConfigFromFile(path string) (*Config, error) {
if f, err := os.Open(path); err != nil {
return nil, err
} else {
c := new(Config)
err1 := c.Load(f)
err = f.Close()
return c, errors.Join(err1, err)
}
}
// NewConfig returns a reference to a Config struct with optional defaults.
// If id is an empty string own defaults are omitted.
func NewConfig(id string, defaults, mpris bool) (c *Config) {
c = &Config{
Call: make(map[string]string),
Broadcast: make(map[string]string),
Filter: true,
}
if defaults {
c.Talk = []string{"org.freedesktop.DBus", "org.freedesktop.Notifications"}
c.Call["org.freedesktop.portal.*"] = "*"
c.Broadcast["org.freedesktop.portal.*"] = "@/org/freedesktop/portal/*"
if id != "" {
c.Own = []string{id + ".*"}
if mpris {
c.Own = append(c.Own, "org.mpris.MediaPlayer2."+id+".*")
}
}
}
return
}
|
