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Add tests for the host checking logic, clarify the behaviors (#20328)

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Before, the combination of AllowedDomains/BlockedDomains/AllowLocalNetworks is confusing.

This PR adds tests for the logic, clarify the behaviors.
This commit is contained in:
wxiaoguang
2022-07-13 09:07:16 +08:00
committed by GitHub
parent d94f517643
commit f67a1030b3
5 changed files with 54 additions and 8 deletions
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11
services/migrations/migrate.go
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@ -84,7 +84,10 @@ func IsMigrateURLAllowed(remoteURL string, doer *user_model.User) error {
// some users only use proxy, there is no DNS resolver. it's safe to ignore the LookupIP error
addrList, _ := net.LookupIP(hostName)
return checkByAllowBlockList(hostName, addrList)
}
func checkByAllowBlockList(hostName string, addrList []net.IP) error {
var ipAllowed bool
var ipBlocked bool
for _, addr := range addrList {
@ -93,12 +96,12 @@ func IsMigrateURLAllowed(remoteURL string, doer *user_model.User) error {
}
var blockedError error
if blockList.MatchHostName(hostName) || ipBlocked {
blockedError = &models.ErrInvalidCloneAddr{Host: u.Host, IsPermissionDenied: true}
blockedError = &models.ErrInvalidCloneAddr{Host: hostName, IsPermissionDenied: true}
}
// if we have an allow-list, check the allow-list first
// if we have an allow-list, check the allow-list before return to get the more accurate error
if !allowList.IsEmpty() {
if !allowList.MatchHostName(hostName) && !ipAllowed {
return &models.ErrInvalidCloneAddr{Host: u.Host, IsPermissionDenied: true}
return &models.ErrInvalidCloneAddr{Host: hostName, IsPermissionDenied: true}
}
}
// otherwise, we always follow the blocked list
@ -474,5 +477,7 @@ func Init() error {
allowList.AppendBuiltin(hostmatcher.MatchBuiltinPrivate)
allowList.AppendBuiltin(hostmatcher.MatchBuiltinLoopback)
}
// TODO: at the moment, if ALLOW_LOCALNETWORKS=false, ALLOWED_DOMAINS=domain.com, and domain.com has IP 127.0.0.1, then it's still allowed.
// if we want to block such case, the private&loopback should be added to the blockList when ALLOW_LOCALNETWORKS=false
return nil
}