auth

Paddy 2015-04-11 Parent:bc842183181d Child:cf6c1f05eb21

158:3223a8e679db Go to Latest

auth/request.go

Remove concept of usernames. We really have no reason to use usernames, and they're complicating things more than they need to. We're going to keep logins the same, because we want to be able to support OAuth2/OpenID/whatever logins in the future, and keeping a type associated with those logins is probably for the best.

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paddy@99 1 package auth
paddy@99 2
paddy@104 3 import (
paddy@104 4 "encoding/json"
paddy@104 5 "log"
paddy@104 6 "net/http"
paddy@104 7
paddy@104 8 "bitbucket.org/ww/goautoneg"
paddy@104 9 )
paddy@104 10
paddy@99 11 const (
paddy@99 12 requestErrAccessDenied = "access_denied"
paddy@99 13 requestErrInsufficient = "insufficient"
paddy@99 14 requestErrOverflow = "overflow"
paddy@99 15 requestErrInvalidValue = "invalid_value"
paddy@99 16 requestErrInvalidFormat = "invalid_format"
paddy@99 17 requestErrMissing = "missing"
paddy@99 18 requestErrNotFound = "not_found"
paddy@104 19 requestErrConflict = "conflict"
paddy@99 20 requestErrActOfGod = "act_of_god"
paddy@99 21 )
paddy@99 22
paddy@104 23 var (
paddy@104 24 actOfGodResponse = response{Errors: []requestError{requestError{Slug: requestErrActOfGod}}}
paddy@104 25 invalidFormatResponse = response{Errors: []requestError{requestError{Slug: requestErrInvalidFormat, Field: "/"}}}
paddy@104 26
paddy@104 27 encoders = []string{"application/json"}
paddy@104 28 )
paddy@104 29
paddy@104 30 type response struct {
paddy@108 31 Errors []requestError `json:"errors,omitempty"`
paddy@108 32 Logins []Login `json:"logins,omitempty"`
paddy@108 33 Profiles []Profile `json:"profiles,omitempty"`
paddy@108 34 Clients []Client `json:"clients,omitempty"`
paddy@108 35 Endpoints []Endpoint `json:"endpoints,omitempty"`
paddy@104 36 }
paddy@104 37
paddy@99 38 type requestError struct {
paddy@99 39 Slug string `json:"error,omitempty"`
paddy@99 40 Field string `json:"field,omitempty"`
paddy@99 41 Param string `json:"param,omitempty"`
paddy@99 42 Header string `json:"header,omitempty"`
paddy@99 43 }
paddy@104 44
paddy@104 45 func negotiate(h http.Handler) http.Handler {
paddy@104 46 return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
paddy@110 47 if r.Header.Get("Accept") != "" {
paddy@110 48 contentType := goautoneg.Negotiate(r.Header.Get("Accept"), encoders)
paddy@110 49 if contentType == "" {
paddy@110 50 w.WriteHeader(http.StatusNotAcceptable)
paddy@110 51 w.Write([]byte("Unsupported content type requested: " + r.Header.Get("Accept")))
paddy@110 52 return
paddy@110 53 }
paddy@104 54 }
paddy@104 55 h.ServeHTTP(w, r)
paddy@104 56 })
paddy@104 57 }
paddy@104 58
paddy@104 59 func encode(w http.ResponseWriter, r *http.Request, status int, resp response) {
paddy@104 60 contentType := goautoneg.Negotiate(r.Header.Get("Accept"), encoders)
paddy@104 61 w.Header().Set("content-type", contentType)
paddy@104 62 w.WriteHeader(status)
paddy@104 63 var err error
paddy@104 64 switch contentType {
paddy@104 65 case "application/json":
paddy@104 66 enc := json.NewEncoder(w)
paddy@104 67 err = enc.Encode(resp)
paddy@110 68 default:
paddy@110 69 enc := json.NewEncoder(w)
paddy@110 70 err = enc.Encode(resp)
paddy@104 71 }
paddy@104 72 if err != nil {
paddy@104 73 log.Println(err)
paddy@104 74 }
paddy@104 75 }
paddy@104 76
paddy@133 77 func decode(r *http.Request, target interface{}) error {
paddy@133 78 defer r.Body.Close()
paddy@133 79 switch r.Header.Get("Content-Type") {
paddy@133 80 case "application/json":
paddy@133 81 dec := json.NewDecoder(r.Body)
paddy@133 82 return dec.Decode(target)
paddy@133 83 default:
paddy@133 84 dec := json.NewDecoder(r.Body)
paddy@133 85 return dec.Decode(target)
paddy@133 86 }
paddy@133 87 }
paddy@133 88
paddy@104 89 func wrap(context Context, f func(w http.ResponseWriter, r *http.Request, context Context)) http.Handler {
paddy@104 90 return negotiate(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
paddy@104 91 f(w, r, context)
paddy@104 92 }))
paddy@104 93 }