-
Notifications
You must be signed in to change notification settings - Fork 19
/
plusrom_preferences.go
147 lines (119 loc) · 3.24 KB
/
plusrom_preferences.go
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
// This file is part of Gopher2600.
//
// Gopher2600 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 3 of the License, or
// (at your option) any later version.
//
// Gopher2600 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 Gopher2600. If not, see <https://www.gnu.org/licenses/>.
package preferences
import (
"crypto/md5"
"fmt"
"math/rand"
"unicode"
"github.com/jetsetilly/gopher2600/hardware/memory/cartridge/plusrom/plusnet"
"github.com/jetsetilly/gopher2600/logger"
"github.com/jetsetilly/gopher2600/prefs"
"github.com/jetsetilly/gopher2600/resources"
)
type PlusROMPreferences struct {
dsk *prefs.Disk
Nick prefs.String
ID prefs.String
// is true if the default nick/id are being used
NewInstallation bool
// show HTTP transactions in the log
HTTPLogging prefs.Bool
}
func newPlusROMpreferences() (*PlusROMPreferences, error) {
p := &PlusROMPreferences{}
p.SetDefaults()
pth, err := resources.JoinPath(prefs.DefaultPrefsFile)
if err != nil {
return nil, err
}
p.dsk, err = prefs.NewDisk(pth)
if err != nil {
return nil, err
}
err = p.dsk.Add("plusrom.nick", &p.Nick)
if err != nil {
return nil, err
}
err = p.dsk.Add("plusrom.id_v2.1.1", &p.ID)
if err != nil {
return nil, err
}
err = p.dsk.Add("plusrom.httplogging", &p.HTTPLogging)
if err != nil {
return nil, err
}
err = p.Nick.Set("gopher2600")
if err != nil {
return nil, err
}
err = p.ID.Set(p.generateID())
if err != nil {
return nil, err
}
p.NewInstallation, err = p.dsk.DoesNotHaveEntry("plusrom.nick")
if err != nil {
return nil, err
}
err = p.dsk.Load(true)
if err != nil {
return p, err
}
if !p.validateID() {
// using logger.Allow because we don't mind a non-main emulation creating this log entry.
logger.Log(logger.Allow, "plusrom preferences", "existing ID invalid. generating new ID and saving")
err = p.ID.Set(p.generateID())
if err != nil {
return nil, err
}
err = p.dsk.Save()
if err != nil {
return p, err
}
}
return p, nil
}
func (p *PlusROMPreferences) validateID() bool {
// check for length
if len(p.ID.String()) != plusnet.MaxIDLength {
return false
}
// check for invalid characters
for _, r := range p.ID.String() {
if !((unicode.IsLetter(r) && unicode.IsLower(r)) || unicode.IsDigit(r)) {
return false
}
}
return true
}
func (p *PlusROMPreferences) generateID() string {
id := fmt.Sprintf("%d", rand.Int63())
id = fmt.Sprintf("%x", md5.Sum([]byte(id)))
return id
}
// SetDefaults reverts all settings to default values.
func (p *PlusROMPreferences) SetDefaults() {
p.Nick.SetMaxLen(plusnet.MaxNickLength)
p.ID.SetMaxLen(plusnet.MaxIDLength)
p.HTTPLogging.Set(false)
}
// Load plusrom preferences from disk.
func (p *PlusROMPreferences) Load() error {
return p.dsk.Load(false)
}
// Save current plusrom preferences to disk.
func (p *PlusROMPreferences) Save() error {
return p.dsk.Save()
}