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Léo-Paul Géneau
gitlab-ce
Commits
c87540ed
Commit
c87540ed
authored
Aug 19, 2016
by
Jacob Vosmaer
Browse files
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Verify JWT messages from gitlab-workhorse
parent
89af76ed
Changes
13
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13 changed files
with
210 additions
and
16 deletions
+210
-16
.gitignore
.gitignore
+1
-0
app/controllers/projects/git_http_client_controller.rb
app/controllers/projects/git_http_client_controller.rb
+4
-0
app/controllers/projects/git_http_controller.rb
app/controllers/projects/git_http_controller.rb
+3
-0
app/controllers/projects/lfs_storage_controller.rb
app/controllers/projects/lfs_storage_controller.rb
+3
-8
app/helpers/workhorse_helper.rb
app/helpers/workhorse_helper.rb
+4
-0
config/initializers/gitlab_workhorse_secret.rb
config/initializers/gitlab_workhorse_secret.rb
+8
-0
lib/ci/api/builds.rb
lib/ci/api/builds.rb
+3
-1
lib/gitlab/workhorse.rb
lib/gitlab/workhorse.rb
+50
-2
spec/lib/gitlab/workhorse_spec.rb
spec/lib/gitlab/workhorse_spec.rb
+85
-1
spec/requests/ci/api/builds_spec.rb
spec/requests/ci/api/builds_spec.rb
+10
-1
spec/requests/git_http_spec.rb
spec/requests/git_http_spec.rb
+17
-1
spec/requests/lfs_http_spec.rb
spec/requests/lfs_http_spec.rb
+17
-2
spec/support/workhorse_helpers.rb
spec/support/workhorse_helpers.rb
+5
-0
No files found.
.gitignore
View file @
c87540ed
...
...
@@ -48,3 +48,4 @@
/vendor/bundle/*
/builds/*
/shared/*
/.gitlab_workhorse_secret
app/controllers/projects/git_http_client_controller.rb
View file @
c87540ed
...
...
@@ -117,4 +117,8 @@ class Projects::GitHttpClientController < Projects::ApplicationController
def
ci?
@ci
.
present?
end
def
verify_workhorse_api!
Gitlab
::
Workhorse
.
verify_api_request!
(
request
.
headers
)
end
end
app/controllers/projects/git_http_controller.rb
View file @
c87540ed
# This file should be identical in GitLab Community Edition and Enterprise Edition
class
Projects::GitHttpController
<
Projects
::
GitHttpClientController
before_action
:verify_workhorse_api!
# GET /foo/bar.git/info/refs?service=git-upload-pack (git pull)
# GET /foo/bar.git/info/refs?service=git-receive-pack (git push)
def
info_refs
...
...
@@ -56,6 +58,7 @@ class Projects::GitHttpController < Projects::GitHttpClientController
end
def
render_ok
set_workhorse_internal_api_content_type
render
json:
Gitlab
::
Workhorse
.
git_http_ok
(
repository
,
user
)
end
...
...
app/controllers/projects/lfs_storage_controller.rb
View file @
c87540ed
...
...
@@ -3,6 +3,7 @@ class Projects::LfsStorageController < Projects::GitHttpClientController
before_action
:require_lfs_enabled!
before_action
:lfs_check_access!
before_action
:verify_workhorse_api!
,
only:
[
:upload_authorize
]
def
download
lfs_object
=
LfsObject
.
find_by_oid
(
oid
)
...
...
@@ -15,14 +16,8 @@ class Projects::LfsStorageController < Projects::GitHttpClientController
end
def
upload_authorize
render
(
json:
{
StoreLFSPath
:
"
#{
Gitlab
.
config
.
lfs
.
storage_path
}
/tmp/upload"
,
LfsOid
:
oid
,
LfsSize
:
size
,
},
content_type:
'application/json; charset=utf-8'
)
set_workhorse_internal_api_content_type
render
json:
Gitlab
::
Workhorse
.
lfs_upload_ok
(
oid
,
size
)
end
def
upload_finalize
...
...
app/helpers/workhorse_helper.rb
View file @
c87540ed
...
...
@@ -34,4 +34,8 @@ module WorkhorseHelper
headers
.
store
(
*
Gitlab
::
Workhorse
.
send_artifacts_entry
(
build
,
entry
))
head
:ok
end
def
set_workhorse_internal_api_content_type
headers
[
'Content-Type'
]
=
Gitlab
::
Workhorse
::
INTERNAL_API_CONTENT_TYPE
end
end
config/initializers/gitlab_workhorse_secret.rb
0 → 100644
View file @
c87540ed
begin
Gitlab
::
Workhorse
.
secret
rescue
Gitlab
::
Workhorse
.
write_secret
end
# Try a second time. If it does not work this will raise.
Gitlab
::
Workhorse
.
secret
lib/ci/api/builds.rb
View file @
c87540ed
...
...
@@ -101,6 +101,7 @@ module Ci
# POST /builds/:id/artifacts/authorize
post
":id/artifacts/authorize"
do
require_gitlab_workhorse!
Gitlab
::
Workhorse
.
verify_api_request!
(
headers
)
not_allowed!
unless
Gitlab
.
config
.
artifacts
.
enabled
build
=
Ci
::
Build
.
find_by_id
(
params
[
:id
])
not_found!
unless
build
...
...
@@ -113,7 +114,8 @@ module Ci
end
status
200
{
TempPath
:
ArtifactUploader
.
artifacts_upload_path
}
content_type
Gitlab
::
Workhorse
::
INTERNAL_API_CONTENT_TYPE
Gitlab
::
Workhorse
.
artifact_upload_ok
end
# Upload artifacts to build - Runners only
...
...
lib/gitlab/workhorse.rb
View file @
c87540ed
require
'base64'
require
'json'
require
'securerandom'
module
Gitlab
class
Workhorse
SEND_DATA_HEADER
=
'Gitlab-Workhorse-Send-Data'
VERSION_FILE
=
'GITLAB_WORKHORSE_VERSION'
INTERNAL_API_CONTENT_TYPE
=
'application/vnd.gitlab-workhorse+json'
INTERNAL_API_REQUEST_HEADER
=
'Gitlab-Workhorse-Api-Request'
# Supposedly the effective key size for HMAC-SHA256 is 256 bits, i.e. 32
# bytes https://tools.ietf.org/html/rfc4868#section-2.6
SECRET_LENGTH
=
32
class
<<
self
def
git_http_ok
(
repository
,
user
)
{
'GL_ID'
=>
Gitlab
::
GlId
.
gl_id
(
user
),
'RepoPath'
=>
repository
.
path_to_repo
,
GL_ID
:
Gitlab
::
GlId
.
gl_id
(
user
),
RepoPath
:
repository
.
path_to_repo
,
}
end
def
lfs_upload_ok
(
oid
,
size
)
{
StoreLFSPath
:
"
#{
Gitlab
.
config
.
lfs
.
storage_path
}
/tmp/upload"
,
LfsOid
:
oid
,
LfsSize
:
size
,
}
end
def
artifact_upload_ok
{
TempPath
:
ArtifactUploader
.
artifacts_upload_path
}
end
def
send_git_blob
(
repository
,
blob
)
params
=
{
'RepoPath'
=>
repository
.
path_to_repo
,
...
...
@@ -81,6 +100,35 @@ module Gitlab
path
.
readable?
?
path
.
read
.
chomp
:
'unknown'
end
def
secret
@secret
||=
begin
bytes
=
Base64
.
strict_decode64
(
File
.
read
(
secret_path
))
raise
"
#{
secret_path
}
does not contain
#{
SECRET_LENGTH
}
bytes"
if
bytes
.
length
!=
SECRET_LENGTH
bytes
end
end
def
write_secret
bytes
=
SecureRandom
.
random_bytes
(
SECRET_LENGTH
)
File
.
open
(
secret_path
,
'w:BINARY'
,
0600
)
do
|
f
|
f
.
chmod
(
0600
)
f
.
write
(
Base64
.
strict_encode64
(
bytes
))
end
end
def
verify_api_request!
(
request_headers
)
JWT
.
decode
(
request_headers
[
INTERNAL_API_REQUEST_HEADER
],
secret
,
true
,
{
iss:
'gitlab-workhorse'
,
verify_iss:
true
,
algorithm:
'HS256'
},
)
end
def
secret_path
Rails
.
root
.
join
(
'.gitlab_workhorse_secret'
)
end
protected
def
encode
(
hash
)
...
...
spec/lib/gitlab/workhorse_spec.rb
View file @
c87540ed
...
...
@@ -4,7 +4,7 @@ describe Gitlab::Workhorse, lib: true do
let
(
:project
)
{
create
(
:project
)
}
let
(
:subject
)
{
Gitlab
::
Workhorse
}
describe
"
#
send_git_archive"
do
describe
"
.
send_git_archive"
do
context
"when the repository doesn't have an archive file path"
do
before
do
allow
(
project
.
repository
).
to
receive
(
:archive_metadata
).
and_return
(
Hash
.
new
)
...
...
@@ -15,4 +15,88 @@ describe Gitlab::Workhorse, lib: true do
end
end
end
describe
".secret"
do
subject
{
described_class
.
secret
}
before
do
described_class
.
instance_variable_set
(
:@secret
,
nil
)
described_class
.
write_secret
end
it
'returns 32 bytes'
do
expect
(
subject
).
to
be_a
(
String
)
expect
(
subject
.
length
).
to
eq
(
32
)
expect
(
subject
.
encoding
).
to
eq
(
Encoding
::
ASCII_8BIT
)
end
it
'raises an exception if the secret file cannot be read'
do
File
.
delete
(
described_class
.
secret_path
)
expect
{
subject
}.
to
raise_exception
(
Errno
::
ENOENT
)
end
it
'raises an exception if the secret file contains the wrong number of bytes'
do
File
.
truncate
(
described_class
.
secret_path
,
0
)
expect
{
subject
}.
to
raise_exception
(
RuntimeError
)
end
end
describe
".write_secret"
do
let
(
:secret_path
)
{
described_class
.
secret_path
}
before
do
begin
File
.
delete
(
secret_path
)
rescue
Errno
::
ENOENT
end
described_class
.
write_secret
end
it
'uses mode 0600'
do
expect
(
File
.
stat
(
secret_path
).
mode
&
0777
).
to
eq
(
0600
)
end
it
'writes base64 data'
do
bytes
=
Base64
.
strict_decode64
(
File
.
read
(
secret_path
))
expect
(
bytes
).
not_to
be_empty
end
end
describe
'#verify_api_request!'
do
let
(
:header_key
)
{
described_class
.
const_get
(
'INTERNAL_API_REQUEST_HEADER'
)
}
let
(
:payload
)
{
{
'iss'
=>
'gitlab-workhorse'
}
}
it
'accepts a correct header'
do
headers
=
{
header_key
=>
JWT
.
encode
(
payload
,
described_class
.
secret
,
'HS256'
)
}
expect
{
call_verify
(
headers
)
}.
not_to
raise_error
end
it
'raises an error when the header is not set'
do
expect
{
call_verify
({})
}.
to
raise_jwt_error
end
it
'raises an error when the header is not signed'
do
headers
=
{
header_key
=>
JWT
.
encode
(
payload
,
nil
,
'none'
)
}
expect
{
call_verify
(
headers
)
}.
to
raise_jwt_error
end
it
'raises an error when the header is signed with the wrong key'
do
headers
=
{
header_key
=>
JWT
.
encode
(
payload
,
'wrongkey'
,
'HS256'
)
}
expect
{
call_verify
(
headers
)
}.
to
raise_jwt_error
end
it
'raises an error when the issuer is incorrect'
do
payload
[
'iss'
]
=
'somebody else'
headers
=
{
header_key
=>
JWT
.
encode
(
payload
,
described_class
.
secret
,
'HS256'
)
}
expect
{
call_verify
(
headers
)
}.
to
raise_jwt_error
end
def
raise_jwt_error
raise_error
(
JWT
::
DecodeError
)
end
def
call_verify
(
headers
)
described_class
.
verify_api_request!
(
headers
)
end
end
end
spec/requests/ci/api/builds_spec.rb
View file @
c87540ed
...
...
@@ -230,7 +230,8 @@ describe Ci::API::API do
let
(
:post_url
)
{
ci_api
(
"/builds/
#{
build
.
id
}
/artifacts"
)
}
let
(
:delete_url
)
{
ci_api
(
"/builds/
#{
build
.
id
}
/artifacts"
)
}
let
(
:get_url
)
{
ci_api
(
"/builds/
#{
build
.
id
}
/artifacts"
)
}
let
(
:headers
)
{
{
"GitLab-Workhorse"
=>
"1.0"
}
}
let
(
:jwt_token
)
{
JWT
.
encode
({
'iss'
=>
'gitlab-workhorse'
},
Gitlab
::
Workhorse
.
secret
,
'HS256'
)
}
let
(
:headers
)
{
{
"GitLab-Workhorse"
=>
"1.0"
,
Gitlab
::
Workhorse
::
INTERNAL_API_REQUEST_HEADER
=>
jwt_token
}
}
let
(
:headers_with_token
)
{
headers
.
merge
(
Ci
::
API
::
Helpers
::
BUILD_TOKEN_HEADER
=>
build
.
token
)
}
before
{
build
.
run!
}
...
...
@@ -240,14 +241,22 @@ describe Ci::API::API do
it
"using token as parameter"
do
post
authorize_url
,
{
token:
build
.
token
},
headers
expect
(
response
).
to
have_http_status
(
200
)
expect
(
response
.
content_type
.
to_s
).
to
eq
(
Gitlab
::
Workhorse
::
INTERNAL_API_CONTENT_TYPE
)
expect
(
json_response
[
"TempPath"
]).
not_to
be_nil
end
it
"using token as header"
do
post
authorize_url
,
{},
headers_with_token
expect
(
response
).
to
have_http_status
(
200
)
expect
(
response
.
content_type
.
to_s
).
to
eq
(
Gitlab
::
Workhorse
::
INTERNAL_API_CONTENT_TYPE
)
expect
(
json_response
[
"TempPath"
]).
not_to
be_nil
end
it
"reject requests that did not go through gitlab-workhorse"
do
headers
.
delete
(
'Gitlab-Workhorse-Api-Request'
)
post
authorize_url
,
{
token:
build
.
token
},
headers
expect
(
response
).
to
have_http_status
(
500
)
end
end
context
"should fail to post too large artifact"
do
...
...
spec/requests/git_http_spec.rb
View file @
c87540ed
require
"spec_helper"
describe
'Git HTTP requests'
,
lib:
true
do
include
WorkhorseHelpers
let
(
:user
)
{
create
(
:user
)
}
let
(
:project
)
{
create
(
:project
,
path:
'project.git-project'
)
}
...
...
@@ -48,6 +50,7 @@ describe 'Git HTTP requests', lib: true do
expect
(
response
).
to
have_http_status
(
200
)
expect
(
json_body
[
'RepoPath'
]).
to
include
(
wiki
.
repository
.
path_with_namespace
)
expect
(
response
.
content_type
.
to_s
).
to
eq
(
Gitlab
::
Workhorse
::
INTERNAL_API_CONTENT_TYPE
)
end
end
end
...
...
@@ -63,6 +66,7 @@ describe 'Git HTTP requests', lib: true do
it
"downloads get status 200"
do
download
(
path
,
{})
do
|
response
|
expect
(
response
).
to
have_http_status
(
200
)
expect
(
response
.
content_type
.
to_s
).
to
eq
(
Gitlab
::
Workhorse
::
INTERNAL_API_CONTENT_TYPE
)
end
end
...
...
@@ -101,6 +105,14 @@ describe 'Git HTTP requests', lib: true do
end
end
end
context
'when the request is not from gitlab-workhorse'
do
it
'raises an exception'
do
expect
do
get
(
"/
#{
project
.
path_with_namespace
}
.git/info/refs?service=git-upload-pack"
)
end
.
to
raise_error
(
JWT
::
DecodeError
)
end
end
end
context
"when the project is private"
do
...
...
@@ -170,11 +182,13 @@ describe 'Git HTTP requests', lib: true do
clone_get
(
path
,
env
)
expect
(
response
).
to
have_http_status
(
200
)
expect
(
response
.
content_type
.
to_s
).
to
eq
(
Gitlab
::
Workhorse
::
INTERNAL_API_CONTENT_TYPE
)
end
it
"uploads get status 200"
do
upload
(
path
,
env
)
do
|
response
|
expect
(
response
).
to
have_http_status
(
200
)
expect
(
response
.
content_type
.
to_s
).
to
eq
(
Gitlab
::
Workhorse
::
INTERNAL_API_CONTENT_TYPE
)
end
end
end
...
...
@@ -189,6 +203,7 @@ describe 'Git HTTP requests', lib: true do
clone_get
"
#{
project
.
path_with_namespace
}
.git"
,
user:
'oauth2'
,
password:
@token
.
token
expect
(
response
).
to
have_http_status
(
200
)
expect
(
response
.
content_type
.
to_s
).
to
eq
(
Gitlab
::
Workhorse
::
INTERNAL_API_CONTENT_TYPE
)
end
it
"uploads get status 401 (no project existence information leak)"
do
...
...
@@ -297,6 +312,7 @@ describe 'Git HTTP requests', lib: true do
clone_get
"
#{
project
.
path_with_namespace
}
.git"
,
user:
'gitlab-ci-token'
,
password:
token
expect
(
response
).
to
have_http_status
(
200
)
expect
(
response
.
content_type
.
to_s
).
to
eq
(
Gitlab
::
Workhorse
::
INTERNAL_API_CONTENT_TYPE
)
end
it
"uploads get status 401 (no project existence information leak)"
do
...
...
@@ -426,7 +442,7 @@ describe 'Git HTTP requests', lib: true do
end
def
auth_env
(
user
,
password
,
spnego_request_token
)
env
=
{}
env
=
workhorse_internal_api_request_header
if
user
&&
password
env
[
'HTTP_AUTHORIZATION'
]
=
ActionController
::
HttpAuthentication
::
Basic
.
encode_credentials
(
user
,
password
)
elsif
spnego_request_token
...
...
spec/requests/lfs_http_spec.rb
View file @
c87540ed
require
'spec_helper'
describe
'Git LFS API and storage'
do
include
WorkhorseHelpers
let
(
:user
)
{
create
(
:user
)
}
let!
(
:lfs_object
)
{
create
(
:lfs_object
,
:with_file
)
}
...
...
@@ -715,6 +717,12 @@ describe 'Git LFS API and storage' do
project
.
team
<<
[
user
,
:developer
]
end
context
'and the request bypassed workhorse'
do
it
'raises an exception'
do
expect
{
put_authorize
(
verified:
false
)
}.
to
raise_error
JWT
::
DecodeError
end
end
context
'and request is sent by gitlab-workhorse to authorize the request'
do
before
do
put_authorize
...
...
@@ -724,6 +732,10 @@ describe 'Git LFS API and storage' do
expect
(
response
).
to
have_http_status
(
200
)
end
it
'uses the gitlab-workhorse content type'
do
expect
(
response
.
content_type
.
to_s
).
to
eq
(
Gitlab
::
Workhorse
::
INTERNAL_API_CONTENT_TYPE
)
end
it
'responds with status 200, location of lfs store and object details'
do
expect
(
json_response
[
'StoreLFSPath'
]).
to
eq
(
"
#{
Gitlab
.
config
.
shared
.
path
}
/lfs-objects/tmp/upload"
)
expect
(
json_response
[
'LfsOid'
]).
to
eq
(
sample_oid
)
...
...
@@ -863,8 +875,11 @@ describe 'Git LFS API and storage' do
end
end
def
put_authorize
put
"
#{
project
.
http_url_to_repo
}
/gitlab-lfs/objects/
#{
sample_oid
}
/
#{
sample_size
}
/authorize"
,
nil
,
headers
def
put_authorize
(
verified:
true
)
authorize_headers
=
headers
authorize_headers
.
merge!
(
workhorse_internal_api_request_header
)
if
verified
put
"
#{
project
.
http_url_to_repo
}
/gitlab-lfs/objects/
#{
sample_oid
}
/
#{
sample_size
}
/authorize"
,
nil
,
authorize_headers
end
def
put_finalize
(
lfs_tmp
=
lfs_tmp_file
)
...
...
spec/support/workhorse_helpers.rb
View file @
c87540ed
...
...
@@ -13,4 +13,9 @@ module WorkhorseHelpers
]
end
end
def
workhorse_internal_api_request_header
jwt_token
=
JWT
.
encode
({
'iss'
=>
'gitlab-workhorse'
},
Gitlab
::
Workhorse
.
secret
,
'HS256'
)
{
'HTTP_'
+
Gitlab
::
Workhorse
::
INTERNAL_API_REQUEST_HEADER
.
upcase
.
tr
(
'-'
,
'_'
)
=>
jwt_token
}
end
end
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