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sshConfigParser.test.ts
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sshConfigParser.test.ts
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import
*
as
fs
from
"fs/promises"
;
import
*
as
os
from
"os"
;
import
*
as
path
from
"path"
;
import
{
resolveSSHConfig
}
from
"./sshConfigParser"
;
describe
(
"resolveSSHConfig"
,
(
)
=>
{
test
(
"applies Host + Match host proxy rules"
,
async
(
)
=>
{
const
tempDir
=
await
fs
.
mkdtemp
(
path
.
join
(
os
.
tmpdir
(
)
,
"mux-ssh-config-"
)
)
;
const
previousUserProfile
=
process
.
env
.
USERPROFILE
;
process
.
env
.
USERPROFILE
=
tempDir
;
try
{
await
fs
.
mkdir
(
path
.
join
(
tempDir
,
".ssh"
)
,
{
recursive
:
true
}
)
;
const
config
=
[
"Host *.mux--coder"
,
" User coder-user"
,
" UserKnownHostsFile /dev/null"
,
""
,
'Match host *.mux--coder !exec "exit 1"'
,
" ProxyCommand /usr/local/bin/coder --stdio %h"
,
""
,
]
.
join
(
"\n"
)
;
await
fs
.
writeFile
(
path
.
join
(
tempDir
,
".ssh"
,
"config"
)
,
config
,
"utf8"
)
;
const
resolved
=
await
resolveSSHConfig
(
"pog2.mux--coder"
)
;
expect
(
resolved
.
user
)
.
toBe
(
"coder-user"
)
;
expect
(
resolved
.
hostName
)
.
toBe
(
"pog2.mux--coder"
)
;
expect
(
resolved
.
proxyCommand
)
.
toBe
(
"/usr/local/bin/coder --stdio %h"
)
;
}
finally
{
if
(
previousUserProfile
===
undefined
)
{
delete
process
.
env
.
USERPROFILE
;
}
else
{
process
.
env
.
USERPROFILE
=
previousUserProfile
;
}
await
fs
.
rm
(
tempDir
,
{
recursive
:
true
,
force
:
true
}
)
;
}
}
)
;
test
(
"defaults %r to local username when no User is specified"
,
async
(
)
=>
{
const
tempDir
=
await
fs
.
mkdtemp
(
path
.
join
(
os
.
tmpdir
(
)
,
"mux-ssh-config-"
)
)
;
const
previousUserProfile
=
process
.
env
.
USERPROFILE
;
process
.
env
.
USERPROFILE
=
tempDir
;
try
{
await
fs
.
mkdir
(
path
.
join
(
tempDir
,
".ssh"
)
,
{
recursive
:
true
}
)
;
// Config with no User directive - %r should default to local username
// The !exec command checks if %r is non-empty; if it were empty, exit 0
// would cause the Match to NOT apply (since !exec means "apply if command fails")
const
config
=
[
"Host test-host"
,
" HostName 10.0.0.1"
,
""
,
// !exec "test -n %r" fails when %r is non-empty (test -n returns 0 for non-empty)
// So we use "test -z %r" which returns 0 when %r IS empty, 1 when non-empty
// With %r defaulting to local username, test -z will fail, Match applies
'Match host 10.0.0.1 !exec "test -z %r"'
,
" ProxyCommand /usr/bin/proxy --user %r"
,
""
,
]
.
join
(
"\n"
)
;
await
fs
.
writeFile
(
path
.
join
(
tempDir
,
".ssh"
,
"config"
)
,
config
,
"utf8"
)
;
const
resolved
=
await
resolveSSHConfig
(
"test-host"
)
;
// Should apply ProxyCommand because %r is non-empty (local username)
expect
(
resolved
.
proxyCommand
)
.
toBe
(
"/usr/bin/proxy --user %r"
)
;
// user should be undefined since no User directive
expect
(
resolved
.
user
)
.
toBeUndefined
(
)
;
}
finally
{
if
(
previousUserProfile
===
undefined
)
{
delete
process
.
env
.
USERPROFILE
;
}
else
{
process
.
env
.
USERPROFILE
=
previousUserProfile
;
}
await
fs
.
rm
(
tempDir
,
{
recursive
:
true
,
force
:
true
}
)
;
}
}
)
;
}
)
;
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