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
|
/*
* Copyright (c) 2014, Yawning Angel <yawning at torproject dot org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
package main
import (
"errors"
"fmt"
"os"
"git.torproject.org/pluggable-transports/goptlib"
)
// This file contains things that probably should be in goptlib but are not
// yet or are not finalized.
func ptEnvError(msg string) error {
line := []byte(fmt.Sprintf("ENV-ERROR %s\n", msg))
pt.Stdout.Write(line)
return errors.New(msg)
}
func ptMakeStateDir() (string, error) {
dir := os.Getenv("TOR_PT_STATE_LOCATION")
if dir == "" {
return "", ptEnvError("no TOR_PT_STATE_LOCATION enviornment variable")
}
err := os.MkdirAll(dir, 0700)
return dir, err
}
func ptIsClient() (bool, error) {
clientEnv := os.Getenv("TOR_PT_CLIENT_TRANSPORTS")
serverEnv := os.Getenv("TOR_PT_SERVER_TRANSPORTS")
if clientEnv != "" && serverEnv != "" {
return false, ptEnvError("TOR_PT_[CLIENT,SERVER]_TRANSPORTS both set")
} else if clientEnv != "" {
return true, nil
} else if serverEnv != "" {
return false, nil
}
return false, errors.New("not launched as a managed transport")
}
|
