forked from TrueCloudLab/lego
42941ccea6
- Packages - Isolate code used by the CLI into the package `cmd` - (experimental) Add e2e tests for HTTP01, TLS-ALPN-01 and DNS-01, use [Pebble](https://github.com/letsencrypt/pebble) and [challtestsrv](https://github.com/letsencrypt/boulder/tree/master/test/challtestsrv) - Support non-ascii domain name (punnycode) - Check all challenges in a predictable order - No more global exported variables - Archive revoked certificates - Fixes revocation for subdomains and non-ascii domains - Disable pending authorizations - use pointer for RemoteError/ProblemDetails - Poll authz URL instead of challenge URL - The ability for a DNS provider to solve the challenge sequentially - Check all nameservers in a predictable order - Option to disable the complete propagation Requirement - CLI, support for renew with CSR - CLI, add SAN on renew - Add command to list certificates. - Logs every iteration of waiting for the propagation - update DNSimple client - update github.com/miekg/dns
54 lines
1.6 KiB
Go
54 lines
1.6 KiB
Go
package dns
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// MsgAcceptFunc is used early in the server code to accept or reject a message with RcodeFormatError.
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// It returns a MsgAcceptAction to indicate what should happen with the message.
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type MsgAcceptFunc func(dh Header) MsgAcceptAction
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// DefaultMsgAcceptFunc checks the request and will reject if:
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//
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// * isn't a request (don't respond in that case).
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// * opcode isn't OpcodeQuery or OpcodeNotify
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// * Zero bit isn't zero
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// * has more than 1 question in the question section
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// * has more than 0 RRs in the Answer section
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// * has more than 0 RRs in the Authority section
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// * has more than 2 RRs in the Additional section
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var DefaultMsgAcceptFunc MsgAcceptFunc = defaultMsgAcceptFunc
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// MsgAcceptAction represents the action to be taken.
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type MsgAcceptAction int
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const (
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MsgAccept MsgAcceptAction = iota // Accept the message
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MsgReject // Reject the message with a RcodeFormatError
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MsgIgnore // Ignore the error and send nothing back.
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)
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var defaultMsgAcceptFunc = func(dh Header) MsgAcceptAction {
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if isResponse := dh.Bits&_QR != 0; isResponse {
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return MsgIgnore
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}
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// Don't allow dynamic updates, because then the sections can contain a whole bunch of RRs.
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opcode := int(dh.Bits>>11) & 0xF
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if opcode != OpcodeQuery && opcode != OpcodeNotify {
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return MsgReject
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}
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if isZero := dh.Bits&_Z != 0; isZero {
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return MsgReject
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}
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if dh.Qdcount != 1 {
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return MsgReject
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}
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if dh.Ancount != 0 {
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return MsgReject
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}
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if dh.Nscount != 0 {
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return MsgReject
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}
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if dh.Arcount > 2 {
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return MsgReject
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}
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return MsgAccept
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}
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