Infrastructure/imageproxy
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Switch to Hostname() for checking whether a host is allowed or not (#238)

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Using .Host allows you to get around an allowHosts or denyHosts entry by adding a port
This commit is contained in:
Blake Stoddard 2020-06-21 00:44:01 -04:00 committed by GitHub
parent f91e9cb508
commit 0da684b81e
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
2 changed files with 5 additions and 3 deletions
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6
imageproxy.go
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@ -319,14 +319,14 @@ func contentTypeMatches(patterns []string, contentType string) bool {
// hostMatches returns whether the host in u matches one of hosts.
func hostMatches(hosts []string, u *url.URL) bool {
for _, host := range hosts {
if u.Host == host {
if u.Hostname() == host {
return true
}
if strings.HasPrefix(host, "*.") && strings.HasSuffix(u.Host, host[2:]) {
if strings.HasPrefix(host, "*.") && strings.HasSuffix(u.Hostname(), host[2:]) {
return true
}
// Checks whether the host in u is an IP
if ip := net.ParseIP(u.Host); ip != nil {
if ip := net.ParseIP(u.Hostname()); ip != nil {
// Checks whether our current host is a CIDR
if _, ipnet, err := net.ParseCIDR(host); err == nil {
// Checks if our host contains the IP in u

2
imageproxy_test.go
View file

@ -170,9 +170,11 @@ func TestAllowed(t *testing.T) {
// deny requests that match denyHosts, even if signature is valid or also matches allowHosts
{"http://test/image", emptyOptions, nil, []string{"test"}, nil, nil, nil, false},
{"http://test:3000/image", emptyOptions, nil, []string{"test"}, nil, nil, nil, false},
{"http://test/image", emptyOptions, []string{"test"}, []string{"test"}, nil, nil, nil, false},
{"http://test/image", Options{Signature: "NDx5zZHx7QfE8E-ijowRreq6CJJBZjwiRfOVk_mkfQQ="}, nil, []string{"test"}, nil, key, nil, false},
{"http://127.0.0.1/image", emptyOptions, nil, []string{"127.0.0.0/8"}, nil, nil, nil, false},
{"http://127.0.0.1:3000/image", emptyOptions, nil, []string{"127.0.0.0/8"}, nil, nil, nil, false},
}
for _, tt := range tests {