/
session.go
166 lines (149 loc) · 4.04 KB
/
session.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
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
/*
* Minio Client, (C) 2015 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package main
import (
"math/rand"
"os"
"path/filepath"
"strings"
"sync"
"time"
"github.com/minio/mc/pkg/console"
"github.com/minio/mc/pkg/quick"
"github.com/minio/minio/pkg/iodine"
)
type sessionV1 struct {
Version string `json:"version"`
Started time.Time `json:"started"`
CommandType string `json:"command-type"`
SessionID string `json:"session-id"`
RootPath string `json:"working-directory"`
URLs []string `json:"args"`
Files map[string]struct{} `json:"files"`
Lock *sync.Mutex `json:"-"`
}
func (s sessionV1) String() string {
message := console.SessionID("%s -> ", s.SessionID)
message = message + console.Time("[%s]", s.Started.Local().Format(printDate))
message = message + console.Command(" %s %s", s.CommandType, strings.Join(s.URLs, " "))
return message
}
func isSessionDirExists() bool {
sdir, err := getSessionDir()
if err != nil {
return false
}
_, err = os.Stat(sdir)
if err != nil {
return false
}
return true
}
func createSessionDir() error {
sdir, err := getSessionDir()
if err != nil {
return iodine.New(err, nil)
}
if err := os.MkdirAll(sdir, 0700); err != nil {
return iodine.New(err, nil)
}
return nil
}
func getSessionDir() (string, error) {
mcConfigDir, err := getMcConfigDir()
if err != nil {
return "", iodine.New(err, nil)
}
return filepath.Join(mcConfigDir, sessionDir), nil
}
var mcCurrentSessionVersion = mcCurrentConfigVersion
var letters = []rune("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ")
// newSID generates a random session id of regular lower case and uppercase english characters
func newSID(n int) string {
rand.Seed(time.Now().UTC().UnixNano())
b := make([]rune, n)
for i := range b {
b[i] = letters[rand.Intn(len(letters))]
}
return string(b)
}
func newSessionV1() (config quick.Config, err error) {
s := new(sessionV1)
s.Version = mcCurrentSessionVersion
// map of command and files copied
s.URLs = nil
s.Started = time.Now().UTC()
s.Files = make(map[string]struct{})
s.Lock = new(sync.Mutex)
s.SessionID = newSID(8)
return quick.New(s)
}
func getSessionFile(sid string) (string, error) {
sdir, err := getSessionDir()
if err != nil {
return "", iodine.New(err, nil)
}
return filepath.Join(sdir, sid), nil
}
// save a session
func saveSession(s *sessionV1) error {
sessionFile, err := getSessionFile(s.SessionID)
if err != nil {
return err
}
qs, err := quick.New(s)
if err != nil {
return err
}
return qs.Save(sessionFile)
}
// provides a new session
func newSession() (*sessionV1, error) {
qs, err := newSessionV1()
if err != nil {
return nil, iodine.New(err, nil)
}
return qs.Data().(*sessionV1), nil
}
// loadSession - reads session file if exists and re-initiates internal variables
func loadSession(sid string) (*sessionV1, error) {
if !isSessionDirExists() {
return nil, iodine.New(errInvalidArgument{}, nil)
}
sessionFile, err := getSessionFile(sid)
if err != nil {
return nil, iodine.New(err, nil)
}
_, err = os.Stat(sessionFile)
if err != nil {
return nil, iodine.New(err, nil)
}
s := new(sessionV1)
s.Version = mcCurrentSessionVersion
// map of command and files copied
s.URLs = nil
s.Lock = new(sync.Mutex)
s.Files = make(map[string]struct{})
qs, err := quick.New(s)
if err != nil {
return nil, iodine.New(err, nil)
}
err = qs.Load(sessionFile)
if err != nil {
return nil, iodine.New(err, nil)
}
return qs.Data().(*sessionV1), nil
}