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opts: ParseTCPAddr(): fix validation of hosts to not ignore path elements

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There was a discrepancy between what `ParseTCPAddr()` accepted, and what the
daemon was able to use, resulting in the daemon to start, but fail to create
listeners for the specified host.

Before this patch:

    dockerd -H tcp://127.0.0.1:2375/
    INFO[2022-04-03T10:18:06.417502600Z] Starting up
    ...
    failed to load listeners: listen tcp: address tcp/2375/: unknown port

    dockerd -H 127.0.0.1:2375/path
    INFO[2022-04-03T10:18:06.417502600Z] Starting up
    ...
    failed to load listeners: listen tcp: address tcp/5555/path: unknown port

After this patch:

    dockerd -H tcp://127.0.0.1:2375/
    Status: invalid argument "tcp://127.0.0.1:2375/" for "-H, --host" flag: invalid bind address (127.0.0.1:2375/): should not contain a path element
    See 'dockerd --help'., Code: 125

    dockerd -H 127.0.0.1:2375/path
    Status: invalid argument "127.0.0.1:2375/path" for "-H, --host" flag: invalid bind address (127.0.0.1:2375/path): should not contain a path element
    See 'dockerd --help'., Code: 125

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
This commit is contained in:
Sebastiaan van Stijn 2022-04-03 21:38:24 +02:00
parent 83970db5ef
commit ecbfe73193
No known key found for this signature in database
GPG key ID: 76698F39D527CE8C
2 changed files with 55 additions and 43 deletions
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7
opts/hosts.go
View file

@ -9,6 +9,7 @@ import (
"strings"
"github.com/docker/docker/pkg/homedir"
"github.com/pkg/errors"
)
const (
@ -162,7 +163,11 @@ func ParseTCPAddr(tryAddr string, defaultAddr string) (string, error) {
return "", fmt.Errorf("Invalid bind address format: %s", tryAddr)
}
return fmt.Sprintf("tcp://%s%s", net.JoinHostPort(host, port), u.Path), nil
if u.Path != "" {
return "", errors.Errorf("invalid bind address (%s): should not contain a path element", tryAddr)
}
return "tcp://" + net.JoinHostPort(host, port), nil
}
// ValidateExtraHost validates that the specified string is a valid extrahost and returns it.

91
opts/hosts_test.go
View file

@ -13,6 +13,14 @@ func TestParseHost(t *testing.T) {
"unknown://",
"tcp://:port",
"tcp://invalid:port",
"tcp://:5555/",
"tcp://:5555/p",
"tcp://0.0.0.0:5555/",
"tcp://0.0.0.0:5555/p",
"tcp://[::1]:/",
"tcp://[::1]:5555/",
"tcp://[::1]:5555/p",
" tcp://:5555/path ",
}
valid := map[string]string{
@ -29,7 +37,6 @@ func TestParseHost(t *testing.T) {
"tcp://192.168.0.0:12000": "tcp://192.168.0.0:12000",
"tcp://192.168:8080": "tcp://192.168:8080",
"tcp://0.0.0.0:1234567890": "tcp://0.0.0.0:1234567890", // yeah it's valid :P
" tcp://:7777/path ": fmt.Sprintf("tcp://%s:7777/path", DefaultHTTPHost),
"tcp://docker.com:2375": "tcp://docker.com:2375",
"unix://": "unix://" + DefaultUnixSocket,
"unix://path/to/socket": "unix://path/to/socket",
@ -60,27 +67,27 @@ func TestParseDockerDaemonHost(t *testing.T) {
"tcp://unix:///run/docker.sock": "Invalid proto, expected tcp: unix:///run/docker.sock",
" tcp://:7777/path ": "Invalid bind address format: tcp://:7777/path ",
"": "Invalid bind address format: ",
":5555/path": "invalid bind address (:5555/path): should not contain a path element",
"0.0.0.1:5555/path": "invalid bind address (0.0.0.1:5555/path): should not contain a path element",
"[::1]:5555/path": "invalid bind address ([::1]:5555/path): should not contain a path element",
"[0:0:0:0:0:0:0:1]:5555/path": "invalid bind address ([0:0:0:0:0:0:0:1]:5555/path): should not contain a path element",
"tcp://:5555/path": "invalid bind address (:5555/path): should not contain a path element",
"localhost:5555/path": "invalid bind address (localhost:5555/path): should not contain a path element",
}
valids := map[string]string{
"0.0.0.1:": "tcp://0.0.0.1:2375",
"0.0.0.1:5555": "tcp://0.0.0.1:5555",
"0.0.0.1:5555/path": "tcp://0.0.0.1:5555/path",
"[::1]:": "tcp://[::1]:2375",
"[::1]:5555/path": "tcp://[::1]:5555/path",
"[0:0:0:0:0:0:0:1]:": "tcp://[0:0:0:0:0:0:0:1]:2375",
"[0:0:0:0:0:0:0:1]:5555/path": "tcp://[0:0:0:0:0:0:0:1]:5555/path",
":6666": fmt.Sprintf("tcp://%s:6666", DefaultHTTPHost),
":6666/path": fmt.Sprintf("tcp://%s:6666/path", DefaultHTTPHost),
"tcp://": DefaultTCPHost,
"tcp://:7777": fmt.Sprintf("tcp://%s:7777", DefaultHTTPHost),
"tcp://:7777/path": fmt.Sprintf("tcp://%s:7777/path", DefaultHTTPHost),
"unix:///run/docker.sock": "unix:///run/docker.sock",
"unix://": "unix://" + DefaultUnixSocket,
"fd://": "fd://",
"fd://something": "fd://something",
"localhost:": "tcp://localhost:2375",
"localhost:5555": "tcp://localhost:5555",
"localhost:5555/path": "tcp://localhost:5555/path",
"0.0.0.1:": "tcp://0.0.0.1:2375",
"0.0.0.1:5555": "tcp://0.0.0.1:5555",
"[::1]:": "tcp://[::1]:2375",
"[0:0:0:0:0:0:0:1]:": "tcp://[0:0:0:0:0:0:0:1]:2375",
":6666": fmt.Sprintf("tcp://%s:6666", DefaultHTTPHost),
"tcp://": DefaultTCPHost,
"tcp://:7777": fmt.Sprintf("tcp://%s:7777", DefaultHTTPHost),
"unix:///run/docker.sock": "unix:///run/docker.sock",
"unix://": "unix://" + DefaultUnixSocket,
"fd://": "fd://",
"fd://something": "fd://something",
"localhost:": "tcp://localhost:2375",
"localhost:5555": "tcp://localhost:5555",
}
for invalidAddr, expectedError := range invalids {
if addr, err := parseDaemonHost(invalidAddr); err == nil || expectedError != "" && err.Error() != expectedError {
@ -99,30 +106,30 @@ func TestParseTCP(t *testing.T) {
defaultHTTPHost = "tcp://127.0.0.1:2376"
)
invalids := map[string]string{
"tcp:a.b.c.d": "",
"tcp:a.b.c.d/path": "",
"udp://127.0.0.1": "Invalid proto, expected tcp: udp://127.0.0.1",
"udp://127.0.0.1:2375": "Invalid proto, expected tcp: udp://127.0.0.1:2375",
"tcp:a.b.c.d": "",
"tcp:a.b.c.d/path": "",
"udp://127.0.0.1": "Invalid proto, expected tcp: udp://127.0.0.1",
"udp://127.0.0.1:2375": "Invalid proto, expected tcp: udp://127.0.0.1:2375",
":5555/path": "invalid bind address (:5555/path): should not contain a path element",
"0.0.0.1:5555/path": "invalid bind address (0.0.0.1:5555/path): should not contain a path element",
"[::1]:5555/path": "invalid bind address ([::1]:5555/path): should not contain a path element",
"[0:0:0:0:0:0:0:1]:5555/path": "invalid bind address ([0:0:0:0:0:0:0:1]:5555/path): should not contain a path element",
"tcp://:5555/path": "invalid bind address (tcp://:5555/path): should not contain a path element",
"localhost:5555/path": "invalid bind address (localhost:5555/path): should not contain a path element",
}
valids := map[string]string{
"": defaultHTTPHost,
"tcp://": defaultHTTPHost,
"0.0.0.1:": "tcp://0.0.0.1:2376",
"0.0.0.1:5555": "tcp://0.0.0.1:5555",
"0.0.0.1:5555/path": "tcp://0.0.0.1:5555/path",
":6666": "tcp://127.0.0.1:6666",
":6666/path": "tcp://127.0.0.1:6666/path",
"tcp://:7777": "tcp://127.0.0.1:7777",
"tcp://:7777/path": "tcp://127.0.0.1:7777/path",
"[::1]:": "tcp://[::1]:2376",
"[::1]:5555": "tcp://[::1]:5555",
"[::1]:5555/path": "tcp://[::1]:5555/path",
"[0:0:0:0:0:0:0:1]:": "tcp://[0:0:0:0:0:0:0:1]:2376",
"[0:0:0:0:0:0:0:1]:5555": "tcp://[0:0:0:0:0:0:0:1]:5555",
"[0:0:0:0:0:0:0:1]:5555/path": "tcp://[0:0:0:0:0:0:0:1]:5555/path",
"localhost:": "tcp://localhost:2376",
"localhost:5555": "tcp://localhost:5555",
"localhost:5555/path": "tcp://localhost:5555/path",
"": defaultHTTPHost,
"tcp://": defaultHTTPHost,
"0.0.0.1:": "tcp://0.0.0.1:2376",
"0.0.0.1:5555": "tcp://0.0.0.1:5555",
":6666": "tcp://127.0.0.1:6666",
"tcp://:7777": "tcp://127.0.0.1:7777",
"[::1]:": "tcp://[::1]:2376",
"[::1]:5555": "tcp://[::1]:5555",
"[0:0:0:0:0:0:0:1]:": "tcp://[0:0:0:0:0:0:0:1]:2376",
"[0:0:0:0:0:0:0:1]:5555": "tcp://[0:0:0:0:0:0:0:1]:5555",
"localhost:": "tcp://localhost:2376",
"localhost:5555": "tcp://localhost:5555",
}
for invalidAddr, expectedError := range invalids {
if addr, err := ParseTCPAddr(invalidAddr, defaultHTTPHost); err == nil || expectedError != "" && err.Error() != expectedError {