This is a clone/fork of https://github.com/miekg/dns
13238cb6ad
* Support parsing known RR types in RFC 3597 format This is the format used for "Unknown DNS Resource Records", but it's also useful to support parsing known RR types in this way. RFC 3597 says: An implementation MAY also choose to represent some RRs of known type using the above generic representations for the type, class and/or RDATA, which carries the benefit of making the resulting master file portable to servers where these types are unknown. Using the generic representation for the RDATA of an RR of known type can also be useful in the case of an RR type where the text format varies depending on a version, protocol, or similar field (or several) embedded in the RDATA when such a field has a value for which no text format is known, e.g., a LOC RR [RFC1876] with a VERSION other than 0. Even though an RR of known type represented in the \# format is effectively treated as an unknown type for the purpose of parsing the RDATA text representation, all further processing by the server MUST treat it as a known type and take into account any applicable type- specific rules regarding compression, canonicalization, etc. * Correct mistakes in TestZoneParserAddressAAAA This was spotted when writing TestParseKnownRRAsRFC3597. * Eliminate canParseAsRR This has the advantage that concrete types will now be returned for parsed ANY, NULL, OPT and TSIG records. * Expand TestDynamicUpdateParsing for RFC 3597 This ensures we're properly handling empty RDATA for RFC 3597 parsed records. |
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| .github/workflows | ||
| dnsutil | ||
| .codecov.yml | ||
| .gitignore | ||
| AUTHORS | ||
| CODEOWNERS | ||
| CONTRIBUTORS | ||
| COPYRIGHT | ||
| LICENSE | ||
| Makefile.fuzz | ||
| Makefile.release | ||
| README.md | ||
| acceptfunc.go | ||
| acceptfunc_test.go | ||
| client.go | ||
| client_test.go | ||
| clientconfig.go | ||
| clientconfig_test.go | ||
| dane.go | ||
| defaults.go | ||
| dns.go | ||
| dns_bench_test.go | ||
| dns_test.go | ||
| dnssec.go | ||
| dnssec_keygen.go | ||
| dnssec_keyscan.go | ||
| dnssec_privkey.go | ||
| dnssec_test.go | ||
| doc.go | ||
| duplicate.go | ||
| duplicate_generate.go | ||
| duplicate_test.go | ||
| dyn_test.go | ||
| edns.go | ||
| edns_test.go | ||
| example_test.go | ||
| format.go | ||
| format_test.go | ||
| fuzz.go | ||
| fuzz_test.go | ||
| generate.go | ||
| generate_test.go | ||
| go.mod | ||
| go.sum | ||
| issue_test.go | ||
| labels.go | ||
| labels_test.go | ||
| leak_test.go | ||
| length_test.go | ||
| listen_go111.go | ||
| listen_go_not111.go | ||
| msg.go | ||
| msg_generate.go | ||
| msg_helpers.go | ||
| msg_helpers_test.go | ||
| msg_test.go | ||
| msg_truncate.go | ||
| msg_truncate_test.go | ||
| nsecx.go | ||
| nsecx_test.go | ||
| parse_test.go | ||
| privaterr.go | ||
| privaterr_test.go | ||
| reverse.go | ||
| rr_test.go | ||
| sanitize.go | ||
| sanitize_test.go | ||
| scan.go | ||
| scan_rr.go | ||
| scan_test.go | ||
| serve_mux.go | ||
| serve_mux_test.go | ||
| server.go | ||
| server_test.go | ||
| sig0.go | ||
| sig0_test.go | ||
| singleinflight.go | ||
| smimea.go | ||
| svcb.go | ||
| svcb_test.go | ||
| tlsa.go | ||
| tsig.go | ||
| tsig_test.go | ||
| types.go | ||
| types_generate.go | ||
| types_test.go | ||
| udp.go | ||
| udp_test.go | ||
| udp_windows.go | ||
| update.go | ||
| update_test.go | ||
| version.go | ||
| version_test.go | ||
| xfr.go | ||
| xfr_test.go | ||
| zduplicate.go | ||
| zmsg.go | ||
| ztypes.go | ||
README.md
Alternative (more granular) approach to a DNS library
Less is more.
Complete and usable DNS library. All Resource Records are supported, including the DNSSEC types. It follows a lean and mean philosophy. If there is stuff you should know as a DNS programmer there isn't a convenience function for it. Server side and client side programming is supported, i.e. you can build servers and resolvers with it.
We try to keep the "master" branch as sane as possible and at the bleeding edge of standards, avoiding breaking changes wherever reasonable. We support the last two versions of Go.
Goals
- KISS;
- Fast;
- Small API. If it's easy to code in Go, don't make a function for it.
Users
A not-so-up-to-date-list-that-may-be-actually-current:
- https://github.com/coredns/coredns
- https://github.com/abh/geodns
- https://github.com/baidu/bfe
- http://www.statdns.com/
- http://www.dnsinspect.com/
- https://github.com/chuangbo/jianbing-dictionary-dns
- http://www.dns-lg.com/
- https://github.com/fcambus/rrda
- https://github.com/kenshinx/godns
- https://github.com/skynetservices/skydns
- https://github.com/hashicorp/consul
- https://github.com/DevelopersPL/godnsagent
- https://github.com/duedil-ltd/discodns
- https://github.com/StalkR/dns-reverse-proxy
- https://github.com/tianon/rawdns
- https://mesosphere.github.io/mesos-dns/
- https://github.com/fcambus/statzone
- https://github.com/benschw/dns-clb-go
- https://github.com/corny/dnscheck for http://public-dns.info/
- https://github.com/miekg/unbound
- https://github.com/miekg/exdns
- https://dnslookup.org
- https://github.com/looterz/grimd
- https://github.com/phamhongviet/serf-dns
- https://github.com/mehrdadrad/mylg
- https://github.com/bamarni/dockness
- https://github.com/fffaraz/microdns
- https://github.com/ipdcode/hades https://jd.com
- https://github.com/StackExchange/dnscontrol/
- https://www.dnsperf.com/
- https://dnssectest.net/
- https://github.com/oif/apex
- https://github.com/jedisct1/dnscrypt-proxy
- https://github.com/jedisct1/rpdns
- https://github.com/xor-gate/sshfp
- https://github.com/rs/dnstrace
- https://blitiri.com.ar/p/dnss (github mirror)
- https://render.com
- https://github.com/peterzen/goresolver
- https://github.com/folbricht/routedns
- https://domainr.com/
- https://zonedb.org/
- https://router7.org/
- https://github.com/fortio/dnsping
- https://github.com/Luzilla/dnsbl_exporter
- https://github.com/bodgit/tsig
Send pull request if you want to be listed here.
Features
- UDP/TCP queries, IPv4 and IPv6
- RFC 1035 zone file parsing ($INCLUDE, $ORIGIN, $TTL and $GENERATE (for all record types) are supported
- Fast
- Server side programming (mimicking the net/http package)
- Client side programming
- DNSSEC: signing, validating and key generation for DSA, RSA, ECDSA and Ed25519
- EDNS0, NSID, Cookies
- AXFR/IXFR
- TSIG, SIG(0)
- DNS over TLS (DoT): encrypted connection between client and server over TCP
- DNS name compression
Have fun!
Miek Gieben - 2010-2012 - miek@miek.nl DNS Authors 2012-
Building
This library uses Go modules and uses semantic versioning. Building is done with the go tool, so
the following should work:
go get github.com/miekg/dns
go build github.com/miekg/dns
Examples
A short "how to use the API" is at the beginning of doc.go (this also will show when you call godoc github.com/miekg/dns).
Example programs can be found in the github.com/miekg/exdns repository.
Supported RFCs
all of them
- 103{4,5} - DNS standard
- 1348 - NSAP record (removed the record)
- 1982 - Serial Arithmetic
- 1876 - LOC record
- 1995 - IXFR
- 1996 - DNS notify
- 2136 - DNS Update (dynamic updates)
- 2181 - RRset definition - there is no RRset type though, just []RR
- 2537 - RSAMD5 DNS keys
- 2065 - DNSSEC (updated in later RFCs)
- 2671 - EDNS record
- 2782 - SRV record
- 2845 - TSIG record
- 2915 - NAPTR record
- 2929 - DNS IANA Considerations
- 3110 - RSASHA1 DNS keys
- 3123 - APL record
- 3225 - DO bit (DNSSEC OK)
- 340{1,2,3} - NAPTR record
- 3445 - Limiting the scope of (DNS)KEY
- 3597 - Unknown RRs
- 403{3,4,5} - DNSSEC + validation functions
- 4255 - SSHFP record
- 4343 - Case insensitivity
- 4408 - SPF record
- 4509 - SHA256 Hash in DS
- 4592 - Wildcards in the DNS
- 4635 - HMAC SHA TSIG
- 4701 - DHCID
- 4892 - id.server
- 5001 - NSID
- 5155 - NSEC3 record
- 5205 - HIP record
- 5702 - SHA2 in the DNS
- 5936 - AXFR
- 5966 - TCP implementation recommendations
- 6605 - ECDSA
- 6725 - IANA Registry Update
- 6742 - ILNP DNS
- 6840 - Clarifications and Implementation Notes for DNS Security
- 6844 - CAA record
- 6891 - EDNS0 update
- 6895 - DNS IANA considerations
- 6944 - DNSSEC DNSKEY Algorithm Status
- 6975 - Algorithm Understanding in DNSSEC
- 7043 - EUI48/EUI64 records
- 7314 - DNS (EDNS) EXPIRE Option
- 7477 - CSYNC RR
- 7828 - edns-tcp-keepalive EDNS0 Option
- 7553 - URI record
- 7858 - DNS over TLS: Initiation and Performance Considerations
- 7871 - EDNS0 Client Subnet
- 7873 - Domain Name System (DNS) Cookies
- 8080 - EdDSA for DNSSEC
- 8499 - DNS Terminology
Loosely Based Upon
- ldns - https://nlnetlabs.nl/projects/ldns/about/
- NSD - https://nlnetlabs.nl/projects/nsd/about/
- Net::DNS - http://www.net-dns.org/
- GRONG - https://github.com/bortzmeyer/grong