distribution/reference/regexp_test.go
Antonio Ojea 53a6f7d7aa registry: support ipv6 addresses
Current registry reference use a subset of dns and IPv4 addresses to
represent a registry domain.

Since registries are mostly compatible with rfc3986, that defines the
URI generic syntax, this adds support for IPv6 enclosed in squared
brackets based on the mentioned rfc.

The regexp is only expanded to match on IPv6 addreses enclosed between
square brackets, considering only regular IPv6 addresses represented
as compressed or uncompressed, excluding special IPv6 address
representations.

Signed-off-by: Antonio Ojea <antonio.ojea.garcia@gmail.com>
2022-06-27 09:54:37 +02:00

593 lines
12 KiB
Go

package reference
import (
"regexp"
"strings"
"testing"
)
type regexpMatch struct {
input string
match bool
subs []string
}
func checkRegexp(t *testing.T, r *regexp.Regexp, m regexpMatch) {
matches := r.FindStringSubmatch(m.input)
if m.match && matches != nil {
if len(matches) != (r.NumSubexp()+1) || matches[0] != m.input {
t.Fatalf("Bad match result %#v for %q", matches, m.input)
}
if len(matches) < (len(m.subs) + 1) {
t.Errorf("Expected %d sub matches, only have %d for %q", len(m.subs), len(matches)-1, m.input)
}
for i := range m.subs {
if m.subs[i] != matches[i+1] {
t.Errorf("Unexpected submatch %d: %q, expected %q for %q", i+1, matches[i+1], m.subs[i], m.input)
}
}
} else if m.match {
t.Errorf("Expected match for %q", m.input)
} else if matches != nil {
t.Errorf("Unexpected match for %q", m.input)
}
}
func TestDomainRegexp(t *testing.T) {
hostcases := []regexpMatch{
{
input: "test.com",
match: true,
},
{
input: "test.com:10304",
match: true,
},
{
input: "test.com:http",
match: false,
},
{
input: "localhost",
match: true,
},
{
input: "localhost:8080",
match: true,
},
{
input: "a",
match: true,
},
{
input: "a.b",
match: true,
},
{
input: "ab.cd.com",
match: true,
},
{
input: "a-b.com",
match: true,
},
{
input: "-ab.com",
match: false,
},
{
input: "ab-.com",
match: false,
},
{
input: "ab.c-om",
match: true,
},
{
input: "ab.-com",
match: false,
},
{
input: "ab.com-",
match: false,
},
{
input: "0101.com",
match: true, // TODO(dmcgowan): valid if this should be allowed
},
{
input: "001a.com",
match: true,
},
{
input: "b.gbc.io:443",
match: true,
},
{
input: "b.gbc.io",
match: true,
},
{
input: "xn--n3h.com", // ☃.com in punycode
match: true,
},
{
input: "Asdf.com", // uppercase character
match: true,
},
{
input: "192.168.1.1:75050", // ipv4
match: true,
},
{
input: "192.168.1.1:750050", // port with more than 5 digits, it will fail on validation
match: true,
},
{
input: "[fd00:1:2::3]:75050", // ipv6 compressed
match: true,
},
{
input: "[fd00:1:2::3]75050", // ipv6 wrong port separator
match: false,
},
{
input: "[fd00:1:2::3]::75050", // ipv6 wrong port separator
match: false,
},
{
input: "[fd00:1:2::3%eth0]:75050", // ipv6 with zone
match: false,
},
{
input: "[fd00123123123]:75050", // ipv6 wrong format, will fail in validation
match: true,
},
{
input: "[2001:0db8:85a3:0000:0000:8a2e:0370:7334]:75050", // ipv6 long format
match: true,
},
{
input: "[2001:0db8:85a3:0000:0000:8a2e:0370:7334]:750505", // ipv6 long format and invalid port, it will fail in validation
match: true,
},
{
input: "fd00:1:2::3:75050", // bad ipv6 without square brackets
match: false,
},
}
r := regexp.MustCompile(`^` + DomainRegexp.String() + `$`)
for i := range hostcases {
checkRegexp(t, r, hostcases[i])
}
}
func TestFullNameRegexp(t *testing.T) {
if anchoredNameRegexp.NumSubexp() != 2 {
t.Fatalf("anchored name regexp should have two submatches: %v, %v != 2",
anchoredNameRegexp, anchoredNameRegexp.NumSubexp())
}
testcases := []regexpMatch{
{
input: "",
match: false,
},
{
input: "short",
match: true,
subs: []string{"", "short"},
},
{
input: "simple/name",
match: true,
subs: []string{"simple", "name"},
},
{
input: "library/ubuntu",
match: true,
subs: []string{"library", "ubuntu"},
},
{
input: "docker/stevvooe/app",
match: true,
subs: []string{"docker", "stevvooe/app"},
},
{
input: "aa/aa/aa/aa/aa/aa/aa/aa/aa/bb/bb/bb/bb/bb/bb",
match: true,
subs: []string{"aa", "aa/aa/aa/aa/aa/aa/aa/aa/bb/bb/bb/bb/bb/bb"},
},
{
input: "aa/aa/bb/bb/bb",
match: true,
subs: []string{"aa", "aa/bb/bb/bb"},
},
{
input: "a/a/a/a",
match: true,
subs: []string{"a", "a/a/a"},
},
{
input: "a/a/a/a/",
match: false,
},
{
input: "a//a/a",
match: false,
},
{
input: "a",
match: true,
subs: []string{"", "a"},
},
{
input: "a/aa",
match: true,
subs: []string{"a", "aa"},
},
{
input: "a/aa/a",
match: true,
subs: []string{"a", "aa/a"},
},
{
input: "foo.com",
match: true,
subs: []string{"", "foo.com"},
},
{
input: "foo.com/",
match: false,
},
{
input: "foo.com:8080/bar",
match: true,
subs: []string{"foo.com:8080", "bar"},
},
{
input: "foo.com:http/bar",
match: false,
},
{
input: "foo.com/bar",
match: true,
subs: []string{"foo.com", "bar"},
},
{
input: "foo.com/bar/baz",
match: true,
subs: []string{"foo.com", "bar/baz"},
},
{
input: "localhost:8080/bar",
match: true,
subs: []string{"localhost:8080", "bar"},
},
{
input: "sub-dom1.foo.com/bar/baz/quux",
match: true,
subs: []string{"sub-dom1.foo.com", "bar/baz/quux"},
},
{
input: "blog.foo.com/bar/baz",
match: true,
subs: []string{"blog.foo.com", "bar/baz"},
},
{
input: "a^a",
match: false,
},
{
input: "aa/asdf$$^/aa",
match: false,
},
{
input: "asdf$$^/aa",
match: false,
},
{
input: "aa-a/a",
match: true,
subs: []string{"aa-a", "a"},
},
{
input: strings.Repeat("a/", 128) + "a",
match: true,
subs: []string{"a", strings.Repeat("a/", 127) + "a"},
},
{
input: "a-/a/a/a",
match: false,
},
{
input: "foo.com/a-/a/a",
match: false,
},
{
input: "-foo/bar",
match: false,
},
{
input: "foo/bar-",
match: false,
},
{
input: "foo-/bar",
match: false,
},
{
input: "foo/-bar",
match: false,
},
{
input: "_foo/bar",
match: false,
},
{
input: "foo_bar",
match: true,
subs: []string{"", "foo_bar"},
},
{
input: "foo_bar.com",
match: true,
subs: []string{"", "foo_bar.com"},
},
{
input: "foo_bar.com:8080",
match: false,
},
{
input: "foo_bar.com:8080/app",
match: false,
},
{
input: "foo.com/foo_bar",
match: true,
subs: []string{"foo.com", "foo_bar"},
},
{
input: "____/____",
match: false,
},
{
input: "_docker/_docker",
match: false,
},
{
input: "docker_/docker_",
match: false,
},
{
input: "b.gcr.io/test.example.com/my-app",
match: true,
subs: []string{"b.gcr.io", "test.example.com/my-app"},
},
{
input: "xn--n3h.com/myimage", // ☃.com in punycode
match: true,
subs: []string{"xn--n3h.com", "myimage"},
},
{
input: "xn--7o8h.com/myimage", // 🐳.com in punycode
match: true,
subs: []string{"xn--7o8h.com", "myimage"},
},
{
input: "example.com/xn--7o8h.com/myimage", // 🐳.com in punycode
match: true,
subs: []string{"example.com", "xn--7o8h.com/myimage"},
},
{
input: "example.com/some_separator__underscore/myimage",
match: true,
subs: []string{"example.com", "some_separator__underscore/myimage"},
},
{
input: "example.com/__underscore/myimage",
match: false,
},
{
input: "example.com/..dots/myimage",
match: false,
},
{
input: "example.com/.dots/myimage",
match: false,
},
{
input: "example.com/nodouble..dots/myimage",
match: false,
},
{
input: "example.com/nodouble..dots/myimage",
match: false,
},
{
input: "docker./docker",
match: false,
},
{
input: ".docker/docker",
match: false,
},
{
input: "docker-/docker",
match: false,
},
{
input: "-docker/docker",
match: false,
},
{
input: "do..cker/docker",
match: false,
},
{
input: "do__cker:8080/docker",
match: false,
},
{
input: "do__cker/docker",
match: true,
subs: []string{"", "do__cker/docker"},
},
{
input: "b.gcr.io/test.example.com/my-app",
match: true,
subs: []string{"b.gcr.io", "test.example.com/my-app"},
},
{
input: "registry.io/foo/project--id.module--name.ver---sion--name",
match: true,
subs: []string{"registry.io", "foo/project--id.module--name.ver---sion--name"},
},
{
input: "Asdf.com/foo/bar", // uppercase character in hostname
match: true,
},
{
input: "Foo/FarB", // uppercase characters in remote name
match: false,
},
}
for i := range testcases {
checkRegexp(t, anchoredNameRegexp, testcases[i])
}
}
func TestReferenceRegexp(t *testing.T) {
if ReferenceRegexp.NumSubexp() != 3 {
t.Fatalf("anchored name regexp should have three submatches: %v, %v != 3",
ReferenceRegexp, ReferenceRegexp.NumSubexp())
}
testcases := []regexpMatch{
{
input: "registry.com:8080/myapp:tag",
match: true,
subs: []string{"registry.com:8080/myapp", "tag", ""},
},
{
input: "registry.com:8080/myapp@sha256:be178c0543eb17f5f3043021c9e5fcf30285e557a4fc309cce97ff9ca6182912",
match: true,
subs: []string{"registry.com:8080/myapp", "", "sha256:be178c0543eb17f5f3043021c9e5fcf30285e557a4fc309cce97ff9ca6182912"},
},
{
input: "registry.com:8080/myapp:tag2@sha256:be178c0543eb17f5f3043021c9e5fcf30285e557a4fc309cce97ff9ca6182912",
match: true,
subs: []string{"registry.com:8080/myapp", "tag2", "sha256:be178c0543eb17f5f3043021c9e5fcf30285e557a4fc309cce97ff9ca6182912"},
},
{
input: "registry.com:8080/myapp@sha256:badbadbadbad",
match: false,
},
{
input: "registry.com:8080/myapp:invalid~tag",
match: false,
},
{
input: "bad_hostname.com:8080/myapp:tag",
match: false,
},
{
input:// localhost treated as name, missing tag with 8080 as tag
"localhost:8080@sha256:be178c0543eb17f5f3043021c9e5fcf30285e557a4fc309cce97ff9ca6182912",
match: true,
subs: []string{"localhost", "8080", "sha256:be178c0543eb17f5f3043021c9e5fcf30285e557a4fc309cce97ff9ca6182912"},
},
{
input: "localhost:8080/name@sha256:be178c0543eb17f5f3043021c9e5fcf30285e557a4fc309cce97ff9ca6182912",
match: true,
subs: []string{"localhost:8080/name", "", "sha256:be178c0543eb17f5f3043021c9e5fcf30285e557a4fc309cce97ff9ca6182912"},
},
{
input: "localhost:http/name@sha256:be178c0543eb17f5f3043021c9e5fcf30285e557a4fc309cce97ff9ca6182912",
match: false,
},
{
// localhost will be treated as an image name without a host
input: "localhost@sha256:be178c0543eb17f5f3043021c9e5fcf30285e557a4fc309cce97ff9ca6182912",
match: true,
subs: []string{"localhost", "", "sha256:be178c0543eb17f5f3043021c9e5fcf30285e557a4fc309cce97ff9ca6182912"},
},
{
input: "registry.com:8080/myapp@bad",
match: false,
},
{
input: "registry.com:8080/myapp@2bad",
match: false, // TODO(dmcgowan): Support this as valid
},
}
for i := range testcases {
checkRegexp(t, ReferenceRegexp, testcases[i])
}
}
func TestIdentifierRegexp(t *testing.T) {
fullCases := []regexpMatch{
{
input: "da304e823d8ca2b9d863a3c897baeb852ba21ea9a9f1414736394ae7fcaf9821",
match: true,
},
{
input: "7EC43B381E5AEFE6E04EFB0B3F0693FF2A4A50652D64AEC573905F2DB5889A1C",
match: false,
},
{
input: "da304e823d8ca2b9d863a3c897baeb852ba21ea9a9f1414736394ae7fcaf",
match: false,
},
{
input: "sha256:da304e823d8ca2b9d863a3c897baeb852ba21ea9a9f1414736394ae7fcaf9821",
match: false,
},
{
input: "da304e823d8ca2b9d863a3c897baeb852ba21ea9a9f1414736394ae7fcaf98218482",
match: false,
},
}
shortCases := []regexpMatch{
{
input: "da304e823d8ca2b9d863a3c897baeb852ba21ea9a9f1414736394ae7fcaf9821",
match: true,
},
{
input: "7EC43B381E5AEFE6E04EFB0B3F0693FF2A4A50652D64AEC573905F2DB5889A1C",
match: false,
},
{
input: "da304e823d8ca2b9d863a3c897baeb852ba21ea9a9f1414736394ae7fcaf",
match: true,
},
{
input: "sha256:da304e823d8ca2b9d863a3c897baeb852ba21ea9a9f1414736394ae7fcaf9821",
match: false,
},
{
input: "da304e823d8ca2b9d863a3c897baeb852ba21ea9a9f1414736394ae7fcaf98218482",
match: false,
},
{
input: "da304",
match: false,
},
{
input: "da304e",
match: true,
},
}
for i := range fullCases {
checkRegexp(t, anchoredIdentifierRegexp, fullCases[i])
}
for i := range shortCases {
checkRegexp(t, anchoredShortIdentifierRegexp, shortCases[i])
}
}