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
|
package config
import (
"errors"
)
// Permissions map. Each SSH user has a list of permissions which log files it
// is allowed to follow and which ones not.
type Permissions struct {
// The default user permissions.
Default []string
// The per user special permissions.
Users map[string][]string
}
// JobCommons summarises common job fields
type jobCommons struct {
Name string
Enable bool
Files string
Query string
Outfile string `json:",omitempty"`
Discovery string `json:",omitempty"`
Servers []string `json:",omitempty"`
AllowFrom []string `json:",omitempty"`
}
// Scheduled allows to configure scheduled mapreduce jobs.
type Scheduled struct {
jobCommons
TimeRange [2]int
}
// Continuous allows to configure continuous running mapreduce jobs.
type Continuous struct {
jobCommons
RestartOnDayChange bool `json:",omitempty"`
}
// ServerConfig represents the server configuration.
type ServerConfig struct {
// The SSH server bind port.
SSHBindAddress string
// The max amount of concurrent user connection allowed to connect to the server.
MaxConnections int
// The max amount of concurrent cats per server.
MaxConcurrentCats int
// The max amount of concurrent tails per server.
MaxConcurrentTails int
// The max line length until it's split up into multiple smaller lines.
MaxLineLength int
// The user permissions.
Permissions Permissions `json:",omitempty"`
// The mapr log format
MapreduceLogFormat string `json:",omitempty"`
// The default path of the server host key
HostKeyFile string
// The host key size in bits
HostKeyBits int
// Scheduled mapreduce jobs.
Schedule []Scheduled `json:",omitempty"`
// Continuous mapreduce jobs
Continuous []Continuous `json:",omitempty"`
// The allowed key exchanges algorithms.
KeyExchanges []string `json:",omitempty"`
// The allowed cipher algorithms.
Ciphers []string `json:",omitempty"`
// The allowed MAC algorithms.
MACs []string `json:",omitempty"`
}
// Create a new default server configuration.
func newDefaultServerConfig() *ServerConfig {
defaultPermissions := []string{"^/.*"}
defaultBindAddress := "0.0.0.0"
return &ServerConfig{
HostKeyBits: 4096,
HostKeyFile: "./cache/ssh_host_key",
MapreduceLogFormat: "default",
MaxConcurrentCats: 2,
MaxConcurrentTails: 50,
MaxConnections: 10,
MaxLineLength: 1024 * 1024,
SSHBindAddress: defaultBindAddress,
Permissions: Permissions{
Default: defaultPermissions,
},
}
}
// ServerUserPermissions retrieves the permission set of a given user.
func ServerUserPermissions(userName string) (permissions []string, err error) {
permissions = Server.Permissions.Default
if p, ok := Server.Permissions.Users[userName]; ok {
permissions = p
}
if len(permissions) == 0 {
err = errors.New("Empty set of permission, user won't be able to open any files")
}
return
}
|
