auth

Paddy 2015-04-07 Parent:bc842183181d Child:cf6c1f05eb21

155:762953f6a7f2 Go to Latest

auth/request.go

Implement postgres version of the tokenStore. Create a postgres implementation for the tokenStore. Note that because pq doesn't support Postgres' array types (see https://github.com/lib/pq/issues/49), we couldn't just store the token.Scopes field as a Postgres array of varchars, which would have been the ideal. Instead, we need a many-to-many table that maps tokens to scopes. This meant we needed a special tokenScope type for our database mapping, and we needed to complicate the token storage/retrieval functions a little bit. It's kind of ugly, I'm not a huge fan of it, and I'd much rather be using the Postgres array types, but... well, here we are. We also added the postgres tokenStore to our slice of tokenStores to test when the correct environment variables are present. We wrote initialization SQL for the tables required by the postgres tokenStore. Also, added a helper script for emptying the test database, because I got tired of doing it by hand. We should be doing that in an automated fashion in the tests themselves, but that would mean extending the *Store interfaces.

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1 package auth
2
3 import (
4 "encoding/json"
5 "log"
6 "net/http"
7
8 "bitbucket.org/ww/goautoneg"
9 )
10
11 const (
12 requestErrAccessDenied = "access_denied"
13 requestErrInsufficient = "insufficient"
14 requestErrOverflow = "overflow"
15 requestErrInvalidValue = "invalid_value"
16 requestErrInvalidFormat = "invalid_format"
17 requestErrMissing = "missing"
18 requestErrNotFound = "not_found"
19 requestErrConflict = "conflict"
20 requestErrActOfGod = "act_of_god"
21 )
22
23 var (
24 actOfGodResponse = response{Errors: []requestError{requestError{Slug: requestErrActOfGod}}}
25 invalidFormatResponse = response{Errors: []requestError{requestError{Slug: requestErrInvalidFormat, Field: "/"}}}
26
27 encoders = []string{"application/json"}
28 )
29
30 type response struct {
31 Errors []requestError `json:"errors,omitempty"`
32 Logins []Login `json:"logins,omitempty"`
33 Profiles []Profile `json:"profiles,omitempty"`
34 Clients []Client `json:"clients,omitempty"`
35 Endpoints []Endpoint `json:"endpoints,omitempty"`
36 }
37
38 type requestError struct {
39 Slug string `json:"error,omitempty"`
40 Field string `json:"field,omitempty"`
41 Param string `json:"param,omitempty"`
42 Header string `json:"header,omitempty"`
43 }
44
45 func negotiate(h http.Handler) http.Handler {
46 return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
47 if r.Header.Get("Accept") != "" {
48 contentType := goautoneg.Negotiate(r.Header.Get("Accept"), encoders)
49 if contentType == "" {
50 w.WriteHeader(http.StatusNotAcceptable)
51 w.Write([]byte("Unsupported content type requested: " + r.Header.Get("Accept")))
52 return
53 }
54 }
55 h.ServeHTTP(w, r)
56 })
57 }
58
59 func encode(w http.ResponseWriter, r *http.Request, status int, resp response) {
60 contentType := goautoneg.Negotiate(r.Header.Get("Accept"), encoders)
61 w.Header().Set("content-type", contentType)
62 w.WriteHeader(status)
63 var err error
64 switch contentType {
65 case "application/json":
66 enc := json.NewEncoder(w)
67 err = enc.Encode(resp)
68 default:
69 enc := json.NewEncoder(w)
70 err = enc.Encode(resp)
71 }
72 if err != nil {
73 log.Println(err)
74 }
75 }
76
77 func decode(r *http.Request, target interface{}) error {
78 defer r.Body.Close()
79 switch r.Header.Get("Content-Type") {
80 case "application/json":
81 dec := json.NewDecoder(r.Body)
82 return dec.Decode(target)
83 default:
84 dec := json.NewDecoder(r.Body)
85 return dec.Decode(target)
86 }
87 }
88
89 func wrap(context Context, f func(w http.ResponseWriter, r *http.Request, context Context)) http.Handler {
90 return negotiate(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
91 f(w, r, context)
92 }))
93 }