Fix permissions for Token DELETE endpoint to match GET and POST (go-gitea#27610)

Fixes go-gitea#27598

In go-gitea#27080, the logic for the tokens endpoints were updated to allow
admins to create and view tokens in other accounts. However, the same
functionality was not added to the DELETE endpoint. This PR makes the
DELETE endpoint function the same as the other token endpoints and adds unit tests

Author: evantobin

routers/api/v1/user/app.go

@@ -193,7 +193,7 @@ func DeleteAccessToken(ctx *context.APIContext) {
 		return
 	}
 
-	if err := auth_model.DeleteAccessTokenByID(ctx, tokenID, ctx.Doer.ID); err != nil {
+	if err := auth_model.DeleteAccessTokenByID(ctx, tokenID, ctx.ContextUser.ID); err != nil {
 		if auth_model.IsErrAccessTokenNotExist(err) {
 			ctx.NotFound()
 		} else {

tests/integration/api_token_test.go

@@ -63,6 +63,33 @@ func TestAPIGetTokensPermission(t *testing.T) {
 	MakeRequest(t, req, http.StatusForbidden)
 }
 
+// TestAPIDeleteTokensPermission ensures that only the admin can delete tokens from other users
+func TestAPIDeleteTokensPermission(t *testing.T) {
+	defer tests.PrepareTestEnv(t)()
+
+	admin := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 1})
+	user2 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 2})
+	user4 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 4})
+
+	// admin can delete tokens for other users
+	createAPIAccessTokenWithoutCleanUp(t, "test-key-1", user2, nil)
+	req := NewRequestf(t, "DELETE", "/api/v1/users/"+user2.LoginName+"/tokens/test-key-1")
+	req = AddBasicAuthHeader(req, admin.Name)
+	MakeRequest(t, req, http.StatusNoContent)
+
+	// non-admin can delete tokens for himself
+	createAPIAccessTokenWithoutCleanUp(t, "test-key-2", user2, nil)
+	req = NewRequestf(t, "DELETE", "/api/v1/users/"+user2.LoginName+"/tokens/test-key-2")
+	req = AddBasicAuthHeader(req, user2.Name)
+	MakeRequest(t, req, http.StatusNoContent)
+
+	// non-admin can't delete tokens for other users
+	createAPIAccessTokenWithoutCleanUp(t, "test-key-3", user2, nil)
+	req = NewRequestf(t, "DELETE", "/api/v1/users/"+user2.LoginName+"/tokens/test-key-3")
+	req = AddBasicAuthHeader(req, user4.Name)
+	MakeRequest(t, req, http.StatusForbidden)
+}
+
 type permission struct {
 	category auth_model.AccessTokenScopeCategory
 	level    auth_model.AccessTokenScopeLevel
@@ -526,7 +553,7 @@ func createAPIAccessTokenWithoutCleanUp(t *testing.T, tokenName string, user *us
 		}
 	}
 	log.Debug("Requesting creation of token with scopes: %v", scopes)
-	req := NewRequestWithJSON(t, "POST", "/api/v1/users/user1/tokens", payload)
+	req := NewRequestWithJSON(t, "POST", "/api/v1/users/"+user.LoginName+"/tokens", payload)
 
 	req = AddBasicAuthHeader(req, user.Name)
 	resp := MakeRequest(t, req, http.StatusCreated)
@@ -546,7 +573,7 @@ func createAPIAccessTokenWithoutCleanUp(t *testing.T, tokenName string, user *us
 // createAPIAccessTokenWithoutCleanUp Delete an API access token and assert that
 // deletion succeeded.
 func deleteAPIAccessToken(t *testing.T, accessToken api.AccessToken, user *user_model.User) {
-	req := NewRequestf(t, "DELETE", "/api/v1/users/user1/tokens/%d", accessToken.ID)
+	req := NewRequestf(t, "DELETE", "/api/v1/users/"+user.LoginName+"/tokens/%d", accessToken.ID)
 	req = AddBasicAuthHeader(req, user.Name)
 	MakeRequest(t, req, http.StatusNoContent)