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gql.go
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gql.go
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package auth
import (
"context"
"github.com/pkg/errors"
"github.com/smartcontractkit/chainlink/v2/core/logger"
"github.com/gin-contrib/sessions"
"github.com/gin-gonic/gin"
clsessions "github.com/smartcontractkit/chainlink/v2/core/sessions"
)
type sessionUserKey struct{}
type GQLSession struct {
SessionID string
User *clsessions.User
}
// AuthenticateGQL middleware checks the session cookie for a user and sets it
// on the request context if it exists. It is the responsibility of each resolver
// to validate whether it requires an authenticated user.
//
// We currently only support GQL authentication by session cookie.
func AuthenticateGQL(authenticator Authenticator, lggr logger.Logger) gin.HandlerFunc {
return func(c *gin.Context) {
ctx := c.Request.Context()
session := sessions.Default(c)
sessionID, ok := session.Get(SessionIDKey).(string)
if !ok {
return
}
user, err := authenticator.AuthorizedUserWithSession(ctx, sessionID)
if err != nil {
if errors.Is(err, clsessions.ErrUserSessionExpired) {
lggr.Warnw("Failed to authenticate session", "err", err)
} else {
lggr.Errorw("Failed call to AuthorizedUserWithSession, unable to get user", "err", err)
}
return
}
ctx = WithGQLAuthenticatedSession(c.Request.Context(), user, sessionID)
c.Request = c.Request.WithContext(ctx)
}
}
// WithGQLAuthenticatedSession sets the authenticated session in the context
//
// There shouldn't be a need to do this outside of testing
func WithGQLAuthenticatedSession(ctx context.Context, user clsessions.User, sessionID string) context.Context {
return context.WithValue(
ctx,
sessionUserKey{},
&GQLSession{sessionID, &user},
)
}
// GetGQLAuthenticatedSession extracts the authentication session from a context.
func GetGQLAuthenticatedSession(ctx context.Context) (*GQLSession, bool) {
obj := ctx.Value(sessionUserKey{})
if obj == nil {
return nil, false
}
session, ok := obj.(*GQLSession)
return session, ok
}