Implement bearer tokens

app/method.go

@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"reflect"
 	"regexp"
+	"strings"
 	"unsafe"
 
 	"github.com/valyala/fasthttp"
@@ -23,9 +24,13 @@ func initialCaretaker(c *fasthttp.RequestCtx, f func(md common.MethodData) commo
 
 	qa := c.Request.URI().QueryArgs()
 	var token string
+	var bearerToken bool
 	switch {
 	case len(c.Request.Header.Peek("X-Ripple-Token")) > 0:
 		token = string(c.Request.Header.Peek("X-Ripple-Token"))
+	case strings.HasPrefix(string(c.Request.Header.Peek("Authorization")), "Bearer "):
+		token = strings.TrimPrefix(string(c.Request.Header.Peek("Authorization")), "Bearer ")
+		bearerToken = true
 	case len(qa.Peek("token")) > 0:
 		token = string(qa.Peek("token"))
 	case len(qa.Peek("k")) > 0:
@@ -41,7 +46,15 @@ func initialCaretaker(c *fasthttp.RequestCtx, f func(md common.MethodData) commo
 		R:     red,
 	}
 	if token != "" {
-		tokenReal, exists := GetTokenFull(token, db)
+		var (
+			tokenReal common.Token
+			exists    bool
+		)
+		if bearerToken {
+			tokenReal, exists = BearerToken(token, db)
+		} else {
+			tokenReal, exists = GetTokenFull(token, db)
+		}
 		if exists {
 			md.User = tokenReal
 			doggoTags = append(doggoTags, "authorised")

app/start.go

@@ -79,8 +79,10 @@ func Start(conf common.Conf, dbO *sqlx.DB) *fhr.Router {
 
 	// v1 API
 	{
-		r.POSTMethod("/api/v1/tokens", v1.TokenNewPOST)
-		r.POSTMethod("/api/v1/tokens/new", v1.TokenNewPOST)
+		// These require an user to pass the password in cleartext and are
+		// as such really insecure.
+		//r.POSTMethod("/api/v1/tokens", v1.TokenNewPOST)
+		//r.POSTMethod("/api/v1/tokens/new", v1.TokenNewPOST)
 		r.POSTMethod("/api/v1/tokens/self/delete", v1.TokenSelfDeletePOST)
 
 		// Auth-free API endpoints (public data)

app/tokens.go

@@ -2,12 +2,14 @@ package app
 
 import (
 	"crypto/md5"
+	"crypto/sha256"
 	"database/sql"
 	"fmt"
+	"strings"
 	"time"
 
-	"zxq.co/ripple/rippleapi/common"
 	"github.com/jmoiron/sqlx"
+	"zxq.co/ripple/rippleapi/common"
 )
 
 // GetTokenFull retrieves an user ID and their token privileges knowing their API token.
@@ -84,3 +86,41 @@ func tokenUpdater(db *sqlx.DB) {
 		}
 	}
 }
+
+// BearerToken parses a Token guiven in the Authorization header, with the
+// Bearer prefix.
+func BearerToken(token string, db *sqlx.DB) (common.Token, bool) {
+	var x struct {
+		Scope string
+		Extra int
+	}
+	db.Get(&x, "SELECT scope, extra FROM osin_access WHERE access_token = ? LIMIT 1", fmt.Sprintf("%x", sha256.Sum256([]byte(token))))
+	if x.Extra == 0 {
+		return common.Token{}, false
+	}
+
+	var privs uint64
+	db.Get(&privs, "SELECT privileges FROM users WHERE id = ? LIMIT 1", x.Extra)
+
+	var t common.Token
+	t.ID = -1
+	t.UserID = x.Extra
+	t.Value = token
+	t.UserPrivileges = common.UserPrivileges(privs)
+	t.TokenPrivileges = oauthPrivileges(x.Scope).CanOnly(t.UserPrivileges)
+
+	return t, true
+}
+
+var privilegeMap = map[string]common.Privileges{
+	"read_confidential": common.PrivilegeReadConfidential,
+	"write":             common.PrivilegeWrite,
+}
+
+func oauthPrivileges(scopes string) common.Privileges {
+	var p common.Privileges
+	for _, x := range strings.Split(scopes, " ") {
+		p |= privilegeMap[x]
+	}
+	return p
+}

app/v1/token.go

@@ -2,8 +2,12 @@ package v1
 
 import (
 	"crypto/md5"
+	"crypto/sha256"
 	"database/sql"
+	"encoding/json"
+	"errors"
 	"fmt"
+	"strconv"
 	"time"
 
 	"github.com/jmoiron/sqlx"
@@ -138,8 +142,14 @@ func TokenSelfDeletePOST(md common.MethodData) common.CodeMessager {
 	if md.ID() == 0 {
 		return common.SimpleResponse(400, "How should we delete your token if you haven't even given us one?!")
 	}
-	_, err := md.DB.Exec("DELETE FROM tokens WHERE token = ? LIMIT 1",
-		fmt.Sprintf("%x", md5.Sum([]byte(md.User.Value))))
+	var err error
+	if md.IsBearer() {
+		_, err = md.DB.Exec("DELETE FROM osin_access WHERE access_token = ? LIMIT 1",
+			fmt.Sprintf("%x", sha256.Sum256([]byte(md.User.Value))))
+	} else {
+		_, err = md.DB.Exec("DELETE FROM tokens WHERE token = ? LIMIT 1",
+			fmt.Sprintf("%x", md5.Sum([]byte(md.User.Value))))
+	}
 	if err != nil {
 		md.Err(err)
 		return Err500
@@ -160,7 +170,7 @@ type tokenResponse struct {
 
 // TokenGET retrieves a list listing all the user's public tokens.
 func TokenGET(md common.MethodData) common.CodeMessager {
-	rows, err := md.DB.Query("SELECT id, privileges, description, last_updated FROM tokens WHERE user = ? AND private = '0'", md.ID())
+	rows, err := md.DB.Query("SELECT id, privileges, description, last_updated FROM tokens WHERE user = ? AND private = '0' "+common.Paginate(md.Query("p"), md.Query("l"), 50), md.ID())
 	if err != nil {
 		return Err500
 	}
@@ -178,20 +188,66 @@ func TokenGET(md common.MethodData) common.CodeMessager {
 	return r
 }
 
+type oauthClient struct {
+	ID      string `json:"id"`
+	Name    string `json:"name"`
+	OwnerID int    `json:"owner_id"`
+	Avatar  string `json:"avatar"`
+}
+
+// Scan scans the extra in the mysql table into Name, OwnerID and Avatar.
+func (o *oauthClient) Scan(src interface{}) error {
+	var s []byte
+	switch x := src.(type) {
+	case string:
+		s = []byte(x)
+	case []byte:
+		s = x
+	default:
+		return errors.New("Can't scan non-string")
+	}
+
+	var vals [3]string
+	err := json.Unmarshal(s, &vals)
+	if err != nil {
+		return err
+	}
+
+	o.Name = vals[0]
+	o.OwnerID, _ = strconv.Atoi(vals[1])
+	o.Avatar = vals[2]
+
+	return nil
+}
+
+type bearerToken struct {
+	Client     oauthClient       `json:"client"`
+	Scope      string            `json:"scope"`
+	Privileges common.Privileges `json:"privileges"`
+	Created    time.Time         `json:"created"`
+}
+
 type tokenSingleResponse struct {
 	common.ResponseBase
 	token
 }
 
+type bearerTokenSingleResponse struct {
+	common.ResponseBase
+	bearerToken
+}
+
 // TokenSelfGET retrieves information about the token the user is connecting with.
 func TokenSelfGET(md common.MethodData) common.CodeMessager {
 	if md.ID() == 0 {
 		return common.SimpleResponse(404, "How are we supposed to find the token you're using if you ain't even using one?!")
 	}
+	if md.IsBearer() {
+		return getBearerToken(md)
+	}
 	var r tokenSingleResponse
 	// md.User.ID = token id, userid would have been md.User.UserID. what a clusterfuck
-	err := md.DB.QueryRow("SELECT id, privileges, description, last_updated FROM tokens WHERE id = ? "+
-		common.Paginate(md.Query("p"), md.Query("l"), 50), md.User.ID).Scan(
+	err := md.DB.QueryRow("SELECT id, privileges, description, last_updated FROM tokens WHERE id = ?", md.User.ID).Scan(
 		&r.ID, &r.Privileges, &r.Description, &r.LastUpdated,
 	)
 	if err != nil {
@@ -202,6 +258,25 @@ func TokenSelfGET(md common.MethodData) common.CodeMessager {
 	return r
 }
 
+func getBearerToken(md common.MethodData) common.CodeMessager {
+	var b bearerTokenSingleResponse
+	err := md.DB.
+		QueryRow(`
+			SELECT t.scope, t.created_at, c.id, c.extra
+			FROM osin_access t INNER JOIN osin_client c
+			WHERE t.access_token = ?
+		`, fmt.Sprintf("%x", sha256.Sum256([]byte(md.User.Value)))).Scan(
+		&b.Scope, &b.Created, &b.Client.ID, &b.Client,
+	)
+	if err != nil {
+		md.Err(err)
+		return Err500
+	}
+	b.Code = 200
+	b.Privileges = md.User.TokenPrivileges
+	return b
+}
+
 // TokenFixPrivilegesPOST fixes the privileges on the token of the given user,
 // or of all the users if no user is given.
 func TokenFixPrivilegesPOST(md common.MethodData) common.CodeMessager {

common/method_data.go

@@ -143,3 +143,8 @@ func (md MethodData) HasQuery(q string) bool {
 func (md MethodData) Unmarshal(into interface{}) error {
 	return json.Unmarshal(md.Ctx.PostBody(), into)
 }
+
+// IsBearer tells whether the current token is a Bearer (oauth) token.
+func (md MethodData) IsBearer() bool {
+	return md.User.ID == -1
+}