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Docker http panics caused by container deletion with empty names.

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This fix tries to fix the http panics caused by container deletion
with empty names in #22210.

The issue was because when an empty string was passed, `GetByName()`
tried to access the first element of the name string without checking
the length. A length check has been added.

A test case for #22210 has been added.

This fix fixes #22210.

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
This commit is contained in:
Yong Tang 2016-04-20 18:33:53 -07:00
parent 7bfe5408a1
commit 9d8071a74d
2 changed files with 15 additions and 0 deletions
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7
daemon/daemon.go
View file

@ -137,6 +137,10 @@ type Daemon struct {
// unique enough to only return a single container object
// If none of these searches succeed, an error is returned
func (daemon *Daemon) GetContainer(prefixOrName string) (*container.Container, error) {
if len(prefixOrName) == 0 {
return nil, errors.NewBadRequestError(fmt.Errorf("No container name or ID supplied"))
}
if containerByID := daemon.containers.Get(prefixOrName); containerByID != nil {
// prefix is an exact match to a full container ID
return containerByID, nil
@ -530,6 +534,9 @@ func (daemon *Daemon) newContainer(name string, config *containertypes.Config, i
// GetByName returns a container given a name.
func (daemon *Daemon) GetByName(name string) (*container.Container, error) {
if len(name) == 0 {
return nil, fmt.Errorf("No container name supplied")
}
fullName := name
if name[0] != '/' {
fullName = "/" + name

8
integration-cli/docker_api_containers_test.go
View file

@ -1616,3 +1616,11 @@ func (s *DockerSuite) TestPostContainersCreateWithOomScoreAdjInvalidRange(c *che
c.Fatalf("Expected output to contain %q, got %q", expected, string(b))
}
}
// test case for #22210 where an emtpy container name caused panic.
func (s *DockerSuite) TestContainerApiDeleteWithEmptyName(c *check.C) {
status, out, err := sockRequest("DELETE", "/containers/", nil)
c.Assert(err, checker.IsNil)
c.Assert(status, checker.Equals, http.StatusBadRequest)
c.Assert(string(out), checker.Contains, "No container name or ID supplied")
}