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
|
module API
module APIHelpers
PRIVATE_TOKEN_HEADER = "HTTP_PRIVATE_TOKEN"
PRIVATE_TOKEN_PARAM = :private_token
SUDO_HEADER ="HTTP_SUDO"
SUDO_PARAM = :sudo
def current_user
private_token = (params[PRIVATE_TOKEN_PARAM] || env[PRIVATE_TOKEN_HEADER]).to_s
@current_user ||= User.find_by(authentication_token: private_token)
identifier = sudo_identifier()
# If the sudo is the current user do nothing
if (identifier && !(@current_user.id == identifier || @current_user.username == identifier))
render_api_error!('403 Forbidden: Must be admin to use sudo', 403) unless @current_user.is_admin?
@current_user = User.by_username_or_id(identifier)
not_found!("No user id or username for: #{identifier}") if @current_user.nil?
end
@current_user
end
def sudo_identifier()
identifier ||= params[SUDO_PARAM] ||= env[SUDO_HEADER]
# Regex for integers
if (!!(identifier =~ /^[0-9]+$/))
identifier.to_i
else
identifier
end
end
def set_current_user_for_thread
Thread.current[:current_user] = current_user
begin
yield
ensure
Thread.current[:current_user] = nil
end
end
def user_project
@project ||= find_project(params[:id])
@project || not_found!
end
def find_project(id)
project = Project.find_with_namespace(id) || Project.find_by(id: id)
if project && can?(current_user, :read_project, project)
project
else
nil
end
end
def paginate(relation)
per_page = params[:per_page].to_i
paginated = relation.page(params[:page]).per(per_page)
add_pagination_headers(paginated, per_page)
paginated
end
def authenticate!
unauthorized! unless current_user
end
def authenticated_as_admin!
forbidden! unless current_user.is_admin?
end
def authorize! action, subject
unless abilities.allowed?(current_user, action, subject)
forbidden!
end
end
def authorize_push_project
authorize! :push_code, user_project
end
def authorize_admin_project
authorize! :admin_project, user_project
end
def can?(object, action, subject)
abilities.allowed?(object, action, subject)
end
# Checks the occurrences of required attributes, each attribute must be present in the params hash
# or a Bad Request error is invoked.
#
# Parameters:
# keys (required) - A hash consisting of keys that must be present
def required_attributes!(keys)
keys.each do |key|
bad_request!(key) unless params[key].present?
end
end
def attributes_for_keys(keys)
attrs = {}
keys.each do |key|
attrs[key] = params[key] if params[key].present? or (params.has_key?(key) and params[key] == false)
end
attrs
end
# error helpers
def forbidden!
render_api_error!('403 Forbidden', 403)
end
def bad_request!(attribute)
message = ["400 (Bad request)"]
message << "\"" + attribute.to_s + "\" not given"
render_api_error!(message.join(' '), 400)
end
def not_found!(resource = nil)
message = ["404"]
message << resource if resource
message << "Not Found"
render_api_error!(message.join(' '), 404)
end
def unauthorized!
render_api_error!('401 Unauthorized', 401)
end
def not_allowed!
render_api_error!('Method Not Allowed', 405)
end
def render_api_error!(message, status)
error!({'message' => message}, status)
end
private
def add_pagination_headers(paginated, per_page)
request_url = request.url.split('?').first
links = []
links << %(<#{request_url}?page=#{paginated.current_page - 1}&per_page=#{per_page}>; rel="prev") unless paginated.first_page?
links << %(<#{request_url}?page=#{paginated.current_page + 1}&per_page=#{per_page}>; rel="next") unless paginated.last_page?
links << %(<#{request_url}?page=1&per_page=#{per_page}>; rel="first")
links << %(<#{request_url}?page=#{paginated.total_pages}&per_page=#{per_page}>; rel="last")
header 'Link', links.join(', ')
end
def abilities
@abilities ||= begin
abilities = Six.new
abilities << Ability
abilities
end
end
end
end
|