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
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
|
@c -*-texinfo-*-
@c This file is part of Guile-SSH Reference Manual.
@c Copyright (C) 2014 Artyom V. Poptsov
@c See the file guile-ssh.texi for copying conditions.
@node Auth
@section Auth
@cindex authentication
The @code{(ssh auth)} module provides authentication procedures for a
Guile-SSH client.
Please note that you must specify a username either on creation of a
session or by @code{session-set!} call (@pxref{Sessions}) before
calling of procedures from this section.
Also @strong{note} that the session must be connected before calling to these
procedures, otherwise the @code{wrong-type-arg} exception will be thrown.
@deffn {Scheme Procedure} userauth-public-key! session private-key
Try to authenticate with a public/private key.
Return one of the following symbols:
@table @samp
@item success
Authentication success.
@item partial
You've been partially authenticated, you still have to use another
method.
@item denied
Authentication failed: use another method.
@item error
A serious error happened.
@end table
@end deffn
@deffn {Scheme Procedure} userauth-public-key/auto! session
@cindex authentication with a SSH agent
Try to automatically authenticate with @code{none} method first and
then with public keys. The procedure will try to get a cached private
key from a @acronym{SSH} agent and if it fails it will try to read a
key from a file. If the key is encrypted the user will be asked for a
passphrase.
Return one of the following symbols:
@table @samp
@item success
Authentication success.
@item partial
You've been partially authenticated, you still have to use another
method.
@item denied
Authentication failed: use another method.
@item error
A serious error happened.
@end table
@end deffn
@deffn {Scheme Procedure} userauth-public-key/try session public-key
Try to authenticate with the given @var{public-key}.
To avoid unnecessary processing and user interaction, the following
method is provided for querying whether authentication using the
@var{public-key} would be possible.
Return one of the following symbols:
@table @samp
@item success
The public key is accepted, you want now to use
@code{userauth-public-key!}.
@item partial
You've been partially authenticated, you still have to use another
method.
@item denied
Authentication failed: use another method.
@item error
A serious error happened.
@end table
@end deffn
@deffn {Scheme Procedure} userauth-agent! session
Try to do public key authentication with ssh agent.
Return one of the following symbols:
@table @samp
@item success
Authentication success.
@item partial
You've been partially authenticated, you still have to use another
method.
@item denied
Authentication failed: use another method.
@item error
A serious error happened.
@end table
@end deffn
@deffn {Scheme Procedure} userauth-password! session password
Try to authenticate by @var{password}.
Return one of the following symbols:
@table @samp
@item success
Authentication success.
@item partial
You've been partially authenticated, you still have to use another
method.
@item denied
Authentication failed: use another method.
@item error
A serious error happened.
@item again
In nonblocking mode, you've got to call this again later.
@end table
@end deffn
@deffn {Scheme Procedure} userauth-gssapi! session
Try to authenticate through the @code{gssapi-with-mic} method.
Return one of the following symbols:
@table @samp
@item success
Authentication success.
@item partial
You've been partially authenticated, you still have to use another method.
@item again
In nonblocking mode, you've got to call this again later.
@item denied
Authentication failed: use another method.
@item error
A serious error happened.
@end table
@end deffn
@deffn {Scheme Procedure} userauth-none! session
Try to authenticate through the @code{none} method.
Return one of the following symbols:
@table @samp
@item success
Authentication success.
@item partial
You've been partially authenticated, you still have to use another method.
@item again
In nonblocking mode, you've got to call this again later.
@item denied
Authentication failed: use another method.
@item error
A serious error happened.
@end table
@end deffn
@deffn {Scheme Procedure} userauth-get-list session
Get available authentication methods for a @var{session}. Return list
of available methods.
This call will block, even in nonblocking mode, if run for the first
time before a (complete) call to @code{userauth-none!}.
Possible methods are: @code{password}, @code{public-key},
@code{host-based}, @code{interactive}.
@end deffn
@c Local Variables:
@c TeX-master: "guile-ssh.texi"
@c End:
|
