16718: Merge branch 'master' into 16718-group-contents-collection-versions

[arvados.git] / sdk / go / auth / auth.go

diff --git a/sdk/go/auth/auth.go b/sdk/go/auth/auth.go
index 730989b3a371ebcb2874784bbd76f668c22a6db2..f1c2e243b53a8f5d7ae604d1b67df55968430fcd 100644 (file)
--- a/sdk/go/auth/auth.go
+++ b/sdk/go/auth/auth.go
@@ -5,6 +5,7 @@
 package auth
 
 import (
+       "context"
        "encoding/base64"
        "net/http"
        "net/url"
@@ -15,11 +16,24 @@ type Credentials struct {
        Tokens []string
 }
 
-func NewCredentials() *Credentials {
-       return &Credentials{Tokens: []string{}}
+func NewCredentials(tokens ...string) *Credentials {
+       return &Credentials{Tokens: tokens}
 }
 
-func NewCredentialsFromHTTPRequest(r *http.Request) *Credentials {
+func NewContext(ctx context.Context, c *Credentials) context.Context {
+       return context.WithValue(ctx, contextKeyCredentials{}, c)
+}
+
+func FromContext(ctx context.Context) (*Credentials, bool) {
+       c, ok := ctx.Value(contextKeyCredentials{}).(*Credentials)
+       return c, ok
+}
+
+func CredentialsFromRequest(r *http.Request) *Credentials {
+       if c, ok := FromContext(r.Context()); ok {
+               // preloaded by middleware
+               return c
+       }
        c := NewCredentials()
        c.LoadTokensFromHTTPRequest(r)
        return c
@@ -34,12 +48,12 @@ var EncodeTokenCookie func([]byte) string = base64.URLEncoding.EncodeToString
 // token.
 var DecodeTokenCookie func(string) ([]byte, error) = base64.URLEncoding.DecodeString
 
-// LoadTokensFromHttpRequest loads all tokens it can find in the
+// LoadTokensFromHTTPRequest loads all tokens it can find in the
 // headers and query string of an http query.
 func (a *Credentials) LoadTokensFromHTTPRequest(r *http.Request) {
        // Load plain token from "Authorization: OAuth2 ..." header
        // (typically used by smart API clients)
-       if toks := strings.SplitN(r.Header.Get("Authorization"), " ", 2); len(toks) == 2 && toks[0] == "OAuth2" {
+       if toks := strings.SplitN(r.Header.Get("Authorization"), " ", 2); len(toks) == 2 && (toks[0] == "OAuth2" || toks[0] == "Bearer") {
                a.Tokens = append(a.Tokens, toks[1])
        }
 
@@ -83,7 +97,21 @@ func (a *Credentials) loadTokenFromCookie(r *http.Request) {
        a.Tokens = append(a.Tokens, string(token))
 }
 
-// TODO: LoadTokensFromHttpRequestBody(). We can't assume in
-// LoadTokensFromHttpRequest() that [or how] we should read and parse
-// the request body. This has to be requested explicitly by the
-// application.
+// LoadTokensFromHTTPRequestBody loads credentials from the request
+// body.
+//
+// This is separate from LoadTokensFromHTTPRequest() because it's not
+// always desirable to read the request body. This has to be requested
+// explicitly by the application.
+func (a *Credentials) LoadTokensFromHTTPRequestBody(r *http.Request) error {
+       if r.Header.Get("Content-Type") != "application/x-www-form-urlencoded" {
+               return nil
+       }
+       if err := r.ParseForm(); err != nil {
+               return err
+       }
+       if t := r.PostFormValue("api_token"); t != "" {
+               a.Tokens = append(a.Tokens, t)
+       }
+       return nil
+}