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
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
|
#
# perhaps we want to verify that the key files are actually the key files we expect.
# we could use 'file' for this:
#
# > file ~/.gnupg/00440025.asc
# ~/.gnupg/00440025.asc: PGP public key block
#
# > file ~/.ssh/id_rsa.pub
# ~/.ssh/id_rsa.pub: OpenSSH RSA public key
#
module LeapCli
module Commands
desc 'Manage trusted sysadmins (DEPRECATED)'
long_desc "Use `leap user add` instead"
command :'add-user' do |c|
c.switch 'self', :desc => 'Add yourself as a trusted sysadmin by choosing among the public keys available for the current user.', :negatable => false
c.flag 'ssh-pub-key', :desc => 'SSH public key file for this new user'
c.flag 'pgp-pub-key', :desc => 'OpenPGP public key file for this new user'
c.action do |global_options,options,args|
do_add_user(global_options, options, args)
end
end
desc 'Manage trusted sysadmins'
long_desc "Manage the trusted sysadmins that are configured in the 'users' directory."
command :user do |user|
user.desc 'Adds a new trusted sysadmin'
user.arg_name 'USERNAME'
user.command :add do |c|
c.switch 'self', :desc => 'Add yourself as a trusted sysadmin by choosing among the public keys available for the current user.', :negatable => false
c.flag 'ssh-pub-key', :desc => 'SSH public key file for this new user'
c.flag 'pgp-pub-key', :desc => 'OpenPGP public key file for this new user'
c.action do |global_options,options,args|
do_add_user(global_options, options, args)
end
end
user.desc 'Removes a trusted sysadmin'
user.arg_name 'USERNAME'
user.command :rm do |c|
c.action do |global_options,options,args|
do_rm_user(global_options, options, args)
end
end
user.desc 'Lists the configured sysadmins'
user.command :ls do |c|
c.action do |global_options,options,args|
do_list_users(global_options, options, args)
end
end
end
private
def do_add_user(global, options, args)
require 'leap_cli/ssh'
username = args.first
if !username.any?
if options[:self]
username ||= `whoami`.strip
else
help! "Either USERNAME argument or --self flag is required."
end
end
if Leap::Platform.reserved_usernames.include? username
bail! %(The username "#{username}" is reserved. Sorry, pick another.)
end
ssh_pub_key = nil
pgp_pub_key = nil
if options['ssh-pub-key']
ssh_pub_key = read_file!(options['ssh-pub-key'])
end
if options['pgp-pub-key']
pgp_pub_key = read_file!(options['pgp-pub-key'])
end
if options[:self]
ssh_pub_key ||= pick_ssh_key.to_s
pgp_pub_key ||= pick_pgp_key
end
assert!(ssh_pub_key, 'Sorry, could not find SSH public key.')
if ssh_pub_key
write_file!([:user_ssh, username], ssh_pub_key)
end
if pgp_pub_key
write_file!([:user_pgp, username], pgp_pub_key)
end
update_authorized_keys
end
def do_rm_user(global, options, args)
dir = [:user_dir, args.first]
if Util.dir_exists?(dir)
Util.remove_file!(dir)
update_authorized_keys
else
bail! :error, 'There is no directory `%s`' % Path.named_path(dir)
end
end
def do_list_users(global, options, args)
require 'leap_cli/ssh'
ssh_keys = {}
Dir.glob("#{ENV['HOME']}/.ssh/*.pub").each do |keyfile|
key = SSH::Key.load(keyfile)
ssh_keys[key.fingerprint] = key if key
end
ssh_agent_keys = {}
if !`which ssh-add`.empty?
`ssh-add -L`.split("\n").each do |keystring|
key = SSH::Key.load(keystring)
ssh_agent_keys[key.fingerprint] = key if key
end
end
Dir.glob(path([:user_ssh, '*'])).each do |keyfile|
username = File.basename(File.dirname(keyfile))
log username, :color => :cyan do
log Path.relative_path(keyfile)
key = SSH::Key.load(keyfile)
log 'SSH MD5 fingerprint: ' + key.fingerprint(:digest => :md5, :type => :ssh, :encoding => :hex)
log 'SSH SHA256 fingerprint: ' + key.fingerprint(:digest => :sha256, :type => :ssh, :encoding => :base64)
log 'DER MD5 fingerprint: ' + key.fingerprint(:digest => :md5, :type => :der, :encoding => :hex)
if ssh_keys[key.fingerprint]
log 'Matches local key: ' + ssh_keys[key.fingerprint].filename, color: :green
if ssh_agent_keys[key.fingerprint]
log 'Matches ssh-agent key: ' + ssh_agent_keys[key.fingerprint].summary(encoding: :base64), color: :green
else
log :error, 'No matching key in the ssh-agent'
end
end
end
end
end
#
# let the the user choose among the ssh public keys that we encounter, or
# just pick the key if there is only one.
#
def pick_ssh_key
ssh_keys = []
Dir.glob("#{ENV['HOME']}/.ssh/*.pub").each do |keyfile|
ssh_keys << SSH::Key.load(keyfile)
end
if `which ssh-add`.strip.any?
`ssh-add -L 2> /dev/null`.split("\n").compact.each do |line|
key = SSH::Key.load(line)
if key
key.comment = 'ssh-agent'
ssh_keys << key unless ssh_keys.include?(key)
end
end
end
ssh_keys.compact!
assert! ssh_keys.any?, 'Sorry, could not find any SSH public key for you. Have you run ssh-keygen?'
if ssh_keys.length > 1
key_index = numbered_choice_menu('Choose your SSH public key', ssh_keys.collect(&:summary)) do |line, i|
say("#{i+1}. #{line}")
end
else
key_index = 0
log "Picking the only compatible ssh key: "+ ssh_keys[key_index].filename do
log ssh_keys[key_index].summary
end
end
return ssh_keys[key_index]
end
#
# let the the user choose among the gpg public keys that we encounter, or just pick the key if there is only one.
#
def pick_pgp_key
begin
require 'gpgme'
rescue LoadError
log "Skipping OpenPGP setup because gpgme is not installed."
return
end
secret_keys = GPGME::Key.find(:secret)
if secret_keys.empty?
log "Skipping OpenPGP setup because I could not find any OpenPGP keys for you"
return nil
end
secret_keys.select!{|key| !key.expired}
if secret_keys.length > 1
key_index = numbered_choice_menu('Choose your OpenPGP public key', secret_keys) do |key, i|
key_info = key.to_s.split("\n")[0..1].map{|line| line.sub(/^\s*(sec|uid)\s*/,'')}.join(' -- ')
say("#{i+1}. #{key_info}")
end
else
key_index = 0
end
key_id = secret_keys[key_index].sha
# can't use this, it includes signatures:
#puts GPGME::Key.export(key_id, :armor => true, :export_options => :export_minimal)
# export with signatures removed:
return `gpg --armor --export-options export-minimal --export #{key_id}`.strip
end
end
end
|
