Fixed: Could not login with existing user.

lib/index-api.js

@@ -180,23 +180,36 @@ module.exports = function(config, auth, storage) {
           return next( Error[422]('user/password is not found in request (npm issue?)') )
         }
       }
-      auth.add_user(req.body.name, req.body.password, function(err, user) {
-        if (err) {
-          if (err.status >= 400 && err.status < 500) {
-            // With npm registering is the same as logging in,
-            // and npm accepts only an 409 error.
-            // So, changing status code here.
-            return next( Error[409](err.message) )
-          }
-          return next(err)
+      // try to login first
+      auth.authenticate(req.body.name, req.body.password, function (err, user) {
+        if (!err) {
+          // user already exists, login
+          req.remote_user = user
+          res.status(201)
+          return next({
+            ok: "you are authenticated as '" + req.body.name + "'",
+            token: token,
+          })
         }
+        // could not login, try to create user
+        auth.add_user(req.body.name, req.body.password, function(err, user) {
+          if (err) {
+            if (err.status >= 400 && err.status < 500) {
+              // With npm registering is the same as logging in,
+              // and npm accepts only an 409 error.
+              // So, changing status code here.
+              return next( Error[409](err.message) )
+            }
+            return next(err)
+          }
 
-        req.remote_user = user
-        res.status(201)
-        return next({
-          ok: "user '" + req.body.name + "' created",
-          //token: auth.issue_token(req.remote_user),
-          token: token,
+          req.remote_user = user
+          res.status(201)
+          return next({
+            ok: "user '" + req.body.name + "' created",
+            //token: auth.issue_token(req.remote_user),
+            token: token,
+          })
         })
       })
     }