do proper testing
This commit is contained in:
Donavan Fritz
parent
6c6d9580d9
commit
2e9360fd45
@ -79,4 +79,10 @@ This plugin provides an easier experience by just providing an IP prefix in CIDR
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## Development
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TODO: Add development instructions
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Standard Go development practices apply.
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### Tests
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```
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$ go test -v
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```
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40
go.mod
Normal file
40
go.mod
Normal file
@ -0,0 +1,40 @@
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module code.fritzlab.net/dns/synthetic
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go 1.21.6
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require (
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github.com/coredns/caddy v1.1.1
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github.com/coredns/coredns v1.11.1
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github.com/miekg/dns v1.1.58
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)
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require (
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github.com/apparentlymart/go-cidr v1.1.0 // indirect
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github.com/beorn7/perks v1.0.1 // indirect
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github.com/cespare/xxhash/v2 v2.2.0 // indirect
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github.com/flynn/go-shlex v0.0.0-20150515145356-3f9db97f8568 // indirect
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github.com/go-task/slim-sprig v0.0.0-20230315185526-52ccab3ef572 // indirect
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github.com/golang/mock v1.6.0 // indirect
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github.com/golang/protobuf v1.5.3 // indirect
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github.com/google/pprof v0.0.0-20230509042627-b1315fad0c5a // indirect
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github.com/grpc-ecosystem/grpc-opentracing v0.0.0-20180507213350-8e809c8a8645 // indirect
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github.com/matttproud/golang_protobuf_extensions v1.0.4 // indirect
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github.com/onsi/ginkgo/v2 v2.11.0 // indirect
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github.com/opentracing/opentracing-go v1.2.0 // indirect
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github.com/prometheus/client_golang v1.16.0 // indirect
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github.com/prometheus/client_model v0.4.0 // indirect
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github.com/prometheus/common v0.44.0 // indirect
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github.com/prometheus/procfs v0.10.1 // indirect
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github.com/quic-go/qtls-go1-20 v0.3.1 // indirect
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github.com/quic-go/quic-go v0.37.4 // indirect
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golang.org/x/crypto v0.18.0 // indirect
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golang.org/x/exp v0.0.0-20221205204356-47842c84f3db // indirect
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golang.org/x/mod v0.14.0 // indirect
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golang.org/x/net v0.20.0 // indirect
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golang.org/x/sys v0.16.0 // indirect
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golang.org/x/text v0.14.0 // indirect
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golang.org/x/tools v0.17.0 // indirect
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google.golang.org/genproto/googleapis/rpc v0.0.0-20230807174057-1744710a1577 // indirect
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google.golang.org/grpc v1.57.0 // indirect
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google.golang.org/protobuf v1.31.0 // indirect
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)
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114
go.sum
Normal file
114
go.sum
Normal file
@ -0,0 +1,114 @@
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github.com/apparentlymart/go-cidr v1.1.0 h1:2mAhrMoF+nhXqxTzSZMUzDHkLjmIHC+Zzn4tdgBZjnU=
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github.com/apparentlymart/go-cidr v1.1.0/go.mod h1:EBcsNrHc3zQeuaeCeCtQruQm+n9/YjEn/vI25Lg7Gwc=
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github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
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github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
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github.com/cespare/xxhash/v2 v2.2.0 h1:DC2CZ1Ep5Y4k3ZQ899DldepgrayRUGE6BBZ/cd9Cj44=
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github.com/cespare/xxhash/v2 v2.2.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
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github.com/coredns/caddy v1.1.1 h1:2eYKZT7i6yxIfGP3qLJoJ7HAsDJqYB+X68g4NYjSrE0=
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github.com/coredns/caddy v1.1.1/go.mod h1:A6ntJQlAWuQfFlsd9hvigKbo2WS0VUs2l1e2F+BawD4=
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github.com/coredns/coredns v1.11.1 h1:IYBM+j/Xx3nTV4HE1s626G9msmJZSdKL9k0ZagYcZFQ=
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github.com/coredns/coredns v1.11.1/go.mod h1:X0ac9RLzd/WAxKuEe3A52miPSm6XjfoxVNAjEQgjphk=
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github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
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github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
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github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
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github.com/flynn/go-shlex v0.0.0-20150515145356-3f9db97f8568 h1:BHsljHzVlRcyQhjrss6TZTdY2VfCqZPbv5k3iBFa2ZQ=
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github.com/flynn/go-shlex v0.0.0-20150515145356-3f9db97f8568/go.mod h1:xEzjJPgXI435gkrCt3MPfRiAkVrwSbHsst4LCFVfpJc=
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github.com/go-logr/logr v1.2.4 h1:g01GSCwiDw2xSZfjJ2/T9M+S6pFdcNtFYsp+Y43HYDQ=
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github.com/go-logr/logr v1.2.4/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A=
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github.com/go-task/slim-sprig v0.0.0-20230315185526-52ccab3ef572 h1:tfuBGBXKqDEevZMzYi5KSi8KkcZtzBcTgAUUtapy0OI=
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github.com/go-task/slim-sprig v0.0.0-20230315185526-52ccab3ef572/go.mod h1:9Pwr4B2jHnOSGXyyzV8ROjYa2ojvAY6HCGYYfMoC3Ls=
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github.com/golang/mock v1.6.0 h1:ErTB+efbowRARo13NNdxyJji2egdxLGQhRaY+DUumQc=
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github.com/golang/mock v1.6.0/go.mod h1:p6yTPP+5HYm5mzsMV8JkE6ZKdX+/wYM6Hr+LicevLPs=
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github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
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github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk=
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github.com/golang/protobuf v1.5.3 h1:KhyjKVUg7Usr/dYsdSqoFveMYd5ko72D+zANwlG1mmg=
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github.com/golang/protobuf v1.5.3/go.mod h1:XVQd3VNwM+JqD3oG2Ue2ip4fOMUkwXdXDdiuN0vRsmY=
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github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
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github.com/google/go-cmp v0.5.9 h1:O2Tfq5qg4qc4AmwVlvv0oLiVAGB7enBSJ2x2DqQFi38=
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github.com/google/go-cmp v0.5.9/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
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github.com/google/pprof v0.0.0-20230509042627-b1315fad0c5a h1:PEOGDI1kkyW37YqPWHLHc+D20D9+87Wt12TCcfTUo5Q=
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github.com/google/pprof v0.0.0-20230509042627-b1315fad0c5a/go.mod h1:79YE0hCXdHag9sBkw2o+N/YnZtTkXi0UT9Nnixa5eYk=
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github.com/google/uuid v1.1.1/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
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github.com/grpc-ecosystem/grpc-opentracing v0.0.0-20180507213350-8e809c8a8645 h1:MJG/KsmcqMwFAkh8mTnAwhyKoB+sTAnY4CACC110tbU=
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github.com/grpc-ecosystem/grpc-opentracing v0.0.0-20180507213350-8e809c8a8645/go.mod h1:6iZfnjpejD4L/4DwD7NryNaJyCQdzwWwH2MWhCA90Kw=
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github.com/matttproud/golang_protobuf_extensions v1.0.4 h1:mmDVorXM7PCGKw94cs5zkfA9PSy5pEvNWRP0ET0TIVo=
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github.com/matttproud/golang_protobuf_extensions v1.0.4/go.mod h1:BSXmuO+STAnVfrANrmjBb36TMTDstsz7MSK+HVaYKv4=
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github.com/miekg/dns v1.1.58 h1:ca2Hdkz+cDg/7eNF6V56jjzuZ4aCAE+DbVkILdQWG/4=
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github.com/miekg/dns v1.1.58/go.mod h1:Ypv+3b/KadlvW9vJfXOTf300O4UqaHFzFCuHz+rPkBY=
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github.com/onsi/ginkgo/v2 v2.11.0 h1:WgqUCUt/lT6yXoQ8Wef0fsNn5cAuMK7+KT9UFRz2tcU=
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github.com/onsi/ginkgo/v2 v2.11.0/go.mod h1:ZhrRA5XmEE3x3rhlzamx/JJvujdZoJ2uvgI7kR0iZvM=
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github.com/onsi/gomega v1.27.8 h1:gegWiwZjBsf2DgiSbf5hpokZ98JVDMcWkUiigk6/KXc=
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github.com/onsi/gomega v1.27.8/go.mod h1:2J8vzI/s+2shY9XHRApDkdgPo1TKT7P2u6fXeJKFnNQ=
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github.com/opentracing/opentracing-go v1.2.0 h1:uEJPy/1a5RIPAJ0Ov+OIO8OxWu77jEv+1B0VhjKrZUs=
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github.com/opentracing/opentracing-go v1.2.0/go.mod h1:GxEUsuufX4nBwe+T+Wl9TAgYrxe9dPLANfrWvHYVTgc=
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github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
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github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
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github.com/prometheus/client_golang v1.16.0 h1:yk/hx9hDbrGHovbci4BY+pRMfSuuat626eFsHb7tmT8=
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github.com/prometheus/client_golang v1.16.0/go.mod h1:Zsulrv/L9oM40tJ7T815tM89lFEugiJ9HzIqaAx4LKc=
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github.com/prometheus/client_model v0.4.0 h1:5lQXD3cAg1OXBf4Wq03gTrXHeaV0TQvGfUooCfx1yqY=
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github.com/prometheus/client_model v0.4.0/go.mod h1:oMQmHW1/JoDwqLtg57MGgP/Fb1CJEYF2imWWhWtMkYU=
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github.com/prometheus/common v0.44.0 h1:+5BrQJwiBB9xsMygAB3TNvpQKOwlkc25LbISbrdOOfY=
|
||||
github.com/prometheus/common v0.44.0/go.mod h1:ofAIvZbQ1e/nugmZGz4/qCb9Ap1VoSTIO7x0VV9VvuY=
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github.com/prometheus/procfs v0.10.1 h1:kYK1Va/YMlutzCGazswoHKo//tZVlFpKYh+PymziUAg=
|
||||
github.com/prometheus/procfs v0.10.1/go.mod h1:nwNm2aOCAYw8uTR/9bWRREkZFxAUcWzPHWJq+XBB/FM=
|
||||
github.com/quic-go/qtls-go1-20 v0.3.1 h1:O4BLOM3hwfVF3AcktIylQXyl7Yi2iBNVy5QsV+ySxbg=
|
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github.com/quic-go/qtls-go1-20 v0.3.1/go.mod h1:X9Nh97ZL80Z+bX/gUXMbipO6OxdiDi58b/fMC9mAL+k=
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github.com/quic-go/quic-go v0.37.4 h1:ke8B73yMCWGq9MfrCCAw0Uzdm7GaViC3i39dsIdDlH4=
|
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github.com/quic-go/quic-go v0.37.4/go.mod h1:YsbH1r4mSHPJcLF4k4zruUkLBqctEMBDR6VPvcYjIsU=
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||||
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
|
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github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
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github.com/stretchr/testify v1.6.1 h1:hDPOHmpOpP40lSULcqw7IrRb/u7w6RpDC9399XyoNd0=
|
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github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
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github.com/yuin/goldmark v1.3.5/go.mod h1:mwnBkeHKe2W/ZEtQ+71ViKU8L12m81fl3OWwC1Zlc8k=
|
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golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
|
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golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
|
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golang.org/x/crypto v0.18.0 h1:PGVlW0xEltQnzFZ55hkuX5+KLyrMYhHld1YHO4AKcdc=
|
||||
golang.org/x/crypto v0.18.0/go.mod h1:R0j02AL6hcrfOiy9T4ZYp/rcWeMxM3L6QYxlOuEG1mg=
|
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golang.org/x/exp v0.0.0-20221205204356-47842c84f3db h1:D/cFflL63o2KSLJIwjlcIt8PR064j/xsmdEJL/YvY/o=
|
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golang.org/x/exp v0.0.0-20221205204356-47842c84f3db/go.mod h1:CxIveKay+FTh1D0yPZemJVgC/95VzuuOLq5Qi4xnoYc=
|
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golang.org/x/mod v0.4.2/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
|
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golang.org/x/mod v0.14.0 h1:dGoOF9QVLYng8IHTm7BAyWqCqSheQ5pYWGhzW00YJr0=
|
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golang.org/x/mod v0.14.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c=
|
||||
golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
|
||||
golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
|
||||
golang.org/x/net v0.0.0-20210405180319-a5a99cb37ef4/go.mod h1:p54w0d4576C0XHj96bSt6lcn1PtDYWL6XObtHCRCNQM=
|
||||
golang.org/x/net v0.20.0 h1:aCL9BSgETF1k+blQaYUBx9hJ9LOGP3gAVemcZlf1Kpo=
|
||||
golang.org/x/net v0.20.0/go.mod h1:z8BVo6PvndSri0LbOE3hAn0apkU+1YvI6E70E9jsnvY=
|
||||
golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
|
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golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
|
||||
golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
|
||||
golang.org/x/sync v0.6.0 h1:5BMeUDZ7vkXGfEr1x9B4bRcTH4lpkTkpdh0T/J+qjbQ=
|
||||
golang.org/x/sync v0.6.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
|
||||
golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
|
||||
golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
|
||||
golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
|
||||
golang.org/x/sys v0.0.0-20210330210617-4fbd30eecc44/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
|
||||
golang.org/x/sys v0.0.0-20210510120138-977fb7262007/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
|
||||
golang.org/x/sys v0.16.0 h1:xWw16ngr6ZMtmxDyKyIgsE93KNKz5HKmMa3b8ALHidU=
|
||||
golang.org/x/sys v0.16.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
|
||||
golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
|
||||
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
|
||||
golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
|
||||
golang.org/x/text v0.14.0 h1:ScX5w1eTa3QqT8oi6+ziP7dTV1S2+ALU0bI+0zXKWiQ=
|
||||
golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
|
||||
golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
|
||||
golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
|
||||
golang.org/x/tools v0.1.1/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
|
||||
golang.org/x/tools v0.17.0 h1:FvmRgNOcs3kOa+T20R1uhfP9F6HgG2mfxDv1vrx1Htc=
|
||||
golang.org/x/tools v0.17.0/go.mod h1:xsh6VxdV005rRVaS6SSAf9oiAqljS7UZUacMZ8Bnsps=
|
||||
golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
|
||||
golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
|
||||
golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
|
||||
golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
|
||||
google.golang.org/genproto/googleapis/rpc v0.0.0-20230807174057-1744710a1577 h1:wukfNtZmZUurLN/atp2hiIeTKn7QJWIQdHzqmsOnAOk=
|
||||
google.golang.org/genproto/googleapis/rpc v0.0.0-20230807174057-1744710a1577/go.mod h1:+Bk1OCOj40wS2hwAMA+aCW9ypzm63QTBBHp6lQ3p+9M=
|
||||
google.golang.org/grpc v1.57.0 h1:kfzNeI/klCGD2YPMUlaGNT3pxvYfga7smW3Vth8Zsiw=
|
||||
google.golang.org/grpc v1.57.0/go.mod h1:Sd+9RMTACXwmub0zcNY2c4arhtrbBYD1AUHI/dt16Mo=
|
||||
google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
|
||||
google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
|
||||
google.golang.org/protobuf v1.31.0 h1:g0LDEJHgrBl9N9r17Ru3sqWhkIx2NB67okBHPwC7hs8=
|
||||
google.golang.org/protobuf v1.31.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
|
||||
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
|
||||
gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
|
||||
gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
|
||||
gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
|
||||
32
setup.go
32
setup.go
@ -6,12 +6,16 @@ import (
|
||||
"github.com/coredns/coredns/core/dnsserver"
|
||||
"github.com/coredns/coredns/plugin"
|
||||
"net"
|
||||
"strconv"
|
||||
"strings"
|
||||
)
|
||||
|
||||
// syntheticConfig holds the configuration options for the synthetic plugin.
|
||||
type syntheticConfig struct {
|
||||
net []*net.IPNet
|
||||
forward string
|
||||
ttl uint32
|
||||
prefix string
|
||||
}
|
||||
|
||||
// init registers this plugin.
|
||||
@ -45,12 +49,40 @@ func setup(c *caddy.Controller) error {
|
||||
config.forward = arg
|
||||
}
|
||||
|
||||
// Configuration for the TTL value
|
||||
case "ttl":
|
||||
args := c.RemainingArgs()
|
||||
for _, arg := range args {
|
||||
ttl64, err := strconv.ParseUint(arg, 10, 32)
|
||||
if err != nil {
|
||||
return fmt.Errorf("synthetic: invalid ttl value: %v", arg)
|
||||
}
|
||||
config.ttl = uint32(ttl64)
|
||||
}
|
||||
|
||||
// configuration for the prefix value (defaults to `ip`)
|
||||
case "prefix":
|
||||
args := c.RemainingArgs()
|
||||
for _, arg := range args {
|
||||
config.prefix = arg
|
||||
}
|
||||
|
||||
default:
|
||||
return c.Errf("unknown property '%s'", v)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if config.forward == "" {
|
||||
return c.Err("synthetic: forward zone must be specified")
|
||||
}
|
||||
if config.prefix == "" {
|
||||
config.prefix = "ip"
|
||||
}
|
||||
if !strings.HasSuffix(config.prefix, "-") {
|
||||
config.prefix = config.prefix + "-"
|
||||
}
|
||||
|
||||
dnsserver.GetConfig(c).AddPlugin(func(next plugin.Handler) plugin.Handler {
|
||||
return synthetic{Next: next, Config: config}
|
||||
})
|
||||
|
||||
48
synthetic.go
48
synthetic.go
@ -13,22 +13,15 @@ import (
|
||||
"strings"
|
||||
)
|
||||
|
||||
// Define log to be a logger with the plugin name in it. This way we can just use log.Info and
|
||||
// friends to log.
|
||||
var log = clog.NewWithPlugin("synthetic")
|
||||
|
||||
// Name implements the Handler interface.
|
||||
func (s synthetic) Name() string { return "synthetic" }
|
||||
|
||||
// synthetic is an synthetic plugin to show how to write a plugin.
|
||||
type synthetic struct {
|
||||
Next plugin.Handler
|
||||
Config syntheticConfig
|
||||
}
|
||||
|
||||
// ServeDNS implements the plugin.Handler interface.
|
||||
//
|
||||
// This method gets called when synthetic is used in a Server
|
||||
func (s synthetic) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg) (int, error) {
|
||||
|
||||
// Create a new state for this request. This is used to store state and allows us to pass this
|
||||
@ -39,12 +32,21 @@ func (s synthetic) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Ms
|
||||
rec := dnstest.NewRecorder(&test.ResponseWriter{})
|
||||
rc, err := plugin.NextOrFailure(s.Name(), s.Next, ctx, rec, r)
|
||||
|
||||
log.Debug("Next plugin in chain responded with rcode ",
|
||||
rc,
|
||||
" and ",
|
||||
len(r.Answer),
|
||||
" answer(s) for ",
|
||||
state.QName(),
|
||||
)
|
||||
|
||||
// If the next plugin in the chain's recorded response is success, we go with that.
|
||||
if rc == dns.RcodeNameError {
|
||||
log.Debug("Next plugin in chain responded with acceptable response ", rc, " for ", state.QName())
|
||||
if rc == dns.RcodeSuccess && len(rec.Msg.Answer) > 0 {
|
||||
log.Info("Next Plugin's answers are acceptable")
|
||||
w.WriteMsg(rec.Msg)
|
||||
return rc, err
|
||||
}
|
||||
log.Debug("Injecting Synthetic response")
|
||||
|
||||
switch state.QType() {
|
||||
|
||||
@ -54,26 +56,26 @@ func (s synthetic) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Ms
|
||||
//
|
||||
case dns.TypeA, dns.TypeAAAA:
|
||||
|
||||
// only continue if the first label starts with "ip-" (fall back to recorded response)
|
||||
if !strings.HasPrefix(state.Name(), "ip-") {
|
||||
// only continue if the first label starts with the prefix (fall back to recorded response)
|
||||
if !strings.HasPrefix(state.Name(), s.Config.prefix) {
|
||||
w.WriteMsg(rec.Msg)
|
||||
return rc, err
|
||||
}
|
||||
|
||||
// parse first dns label (now we have: "ip-<ip>")
|
||||
// parse first dns label (now we have: "<prefix><ip>")
|
||||
firstLabel := strings.Split(state.Name(), ".")[0]
|
||||
|
||||
// trim "ip-" prefix (now we have: "<ip>")
|
||||
ipStr := strings.TrimPrefix(firstLabel, "ip-")
|
||||
// trim the prefix (now we have: "<ip>")
|
||||
ipStr := strings.TrimPrefix(firstLabel, s.Config.prefix)
|
||||
|
||||
// attempt to parse as IPv4 or IPv6
|
||||
// attempt to parse as IPv6 or IPv4
|
||||
ip := net.ParseIP(strings.ReplaceAll(ipStr, "-", "."))
|
||||
if ip == nil {
|
||||
ip = net.ParseIP(strings.ReplaceAll(ipStr, "-", ":"))
|
||||
}
|
||||
log.Debug(state.Name(), " parsed to ", ip)
|
||||
|
||||
// don't continue if we couldn't parse the IP (fall back to recorded respones)
|
||||
// don't continue if we couldn't parse the IP (fall back to recorded responses)
|
||||
if ip == nil {
|
||||
log.Debug("Failed to parse IP from: ", state.QName())
|
||||
w.WriteMsg(rec.Msg)
|
||||
@ -100,7 +102,7 @@ func (s synthetic) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Ms
|
||||
log.Debug("Responding to AAAA request for ", state.QName())
|
||||
m := new(dns.Msg)
|
||||
m.SetReply(r)
|
||||
hdr := dns.RR_Header{Name: state.QName(), Rrtype: state.QType(), Class: state.QClass()}
|
||||
hdr := dns.RR_Header{Name: state.QName(), Rrtype: state.QType(), Class: state.QClass(), Ttl: s.Config.ttl}
|
||||
m.Answer = append(m.Answer, &dns.AAAA{Hdr: hdr, AAAA: ip.To16()})
|
||||
w.WriteMsg(m)
|
||||
return dns.RcodeSuccess, nil
|
||||
@ -111,7 +113,7 @@ func (s synthetic) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Ms
|
||||
log.Debug("Responding to A request for ", state.QName())
|
||||
m := new(dns.Msg)
|
||||
m.SetReply(r)
|
||||
hdr := dns.RR_Header{Name: state.QName(), Rrtype: state.QType(), Class: state.QClass()}
|
||||
hdr := dns.RR_Header{Name: state.QName(), Rrtype: state.QType(), Class: state.QClass(), Ttl: s.Config.ttl}
|
||||
m.Answer = append(m.Answer, &dns.A{Hdr: hdr, A: ip.To4()})
|
||||
w.WriteMsg(m)
|
||||
return dns.RcodeSuccess, nil
|
||||
@ -142,7 +144,7 @@ func (s synthetic) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Ms
|
||||
|
||||
//
|
||||
// Handle PTR requests (Reverse Lookup)
|
||||
// Note: on the forward lookup, we're guaranteed to have a match on the network
|
||||
// Note: on the reverse lookup, we're guaranteed to have a match on the network based on the zone file
|
||||
//
|
||||
case dns.TypePTR:
|
||||
ip := inArpaToIp(state.QName())
|
||||
@ -155,11 +157,11 @@ func (s synthetic) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Ms
|
||||
}
|
||||
|
||||
// successful reverse lookup
|
||||
forward := ipToDomainName(ip, s.Config.forward)
|
||||
forward := ipToDomainName(s.Config.prefix, ip, s.Config.forward)
|
||||
log.Debug("Responding to PTR request for ", state.QName(), " with ", forward)
|
||||
m := new(dns.Msg)
|
||||
m.SetReply(r)
|
||||
hdr := dns.RR_Header{Name: state.QName(), Rrtype: state.QType(), Class: state.QClass()}
|
||||
hdr := dns.RR_Header{Name: state.QName(), Rrtype: state.QType(), Class: state.QClass(), Ttl: s.Config.ttl}
|
||||
m.Answer = append(m.Answer, &dns.PTR{Hdr: hdr, Ptr: forward})
|
||||
w.WriteMsg(m)
|
||||
return dns.RcodeSuccess, nil
|
||||
@ -209,7 +211,7 @@ func inArpaToIp(name string) net.IP {
|
||||
return nil
|
||||
}
|
||||
|
||||
func ipToDomainName(ip net.IP, zone string) string {
|
||||
func ipToDomainName(prefix string, ip net.IP, zone string) string {
|
||||
if ip == nil {
|
||||
return ""
|
||||
}
|
||||
@ -228,5 +230,5 @@ func ipToDomainName(ip net.IP, zone string) string {
|
||||
}
|
||||
|
||||
response := strings.Join(strings.Split(ip.String(), sep), "-")
|
||||
return "ip-" + response + zone
|
||||
return prefix + response + zone
|
||||
}
|
||||
|
||||
231
synthetic_test.go
Normal file
231
synthetic_test.go
Normal file
@ -0,0 +1,231 @@
|
||||
package synthetic
|
||||
|
||||
import (
|
||||
"context"
|
||||
"fmt"
|
||||
"github.com/coredns/coredns/plugin/pkg/dnstest"
|
||||
"github.com/coredns/coredns/plugin/test"
|
||||
"github.com/miekg/dns"
|
||||
"net"
|
||||
"testing"
|
||||
)
|
||||
|
||||
// todo:
|
||||
// 1. A lookup for v6 address
|
||||
func TestServeDNSv4(t *testing.T) {
|
||||
ip, ipNet, err := net.ParseCIDR("192.0.2.0/24")
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
|
||||
s := synthetic{
|
||||
Next: test.ErrorHandler(),
|
||||
Config: syntheticConfig{
|
||||
net: []*net.IPNet{{IP: ip, Mask: ipNet.Mask}},
|
||||
forward: "example.com",
|
||||
prefix: "ip-",
|
||||
},
|
||||
}
|
||||
|
||||
testCases := []struct {
|
||||
qname string
|
||||
qtype uint16
|
||||
wantrcode int
|
||||
wantAnswer []string
|
||||
wantTTL uint32
|
||||
}{
|
||||
{
|
||||
qname: "ip-192-0-2-0.example.com",
|
||||
qtype: dns.TypeA,
|
||||
wantrcode: dns.RcodeSuccess,
|
||||
wantAnswer: []string{"192.0.2.0"},
|
||||
wantTTL: 0,
|
||||
},
|
||||
{
|
||||
qname: "ip-192-0-2-255.example.com",
|
||||
qtype: dns.TypeA,
|
||||
wantrcode: dns.RcodeSuccess,
|
||||
wantAnswer: []string{"192.0.2.255"},
|
||||
wantTTL: 0,
|
||||
},
|
||||
{
|
||||
qname: "ip-203-0-113-100.example.com",
|
||||
qtype: dns.TypeA,
|
||||
wantrcode: dns.RcodeServerFailure,
|
||||
wantAnswer: nil,
|
||||
wantTTL: 0,
|
||||
},
|
||||
{
|
||||
qname: "123.2.0.192.in-addr.arpa.",
|
||||
qtype: dns.TypePTR,
|
||||
wantrcode: dns.RcodeSuccess,
|
||||
wantAnswer: []string{"ip-192-0-2-123.example.com."},
|
||||
wantTTL: 0,
|
||||
},
|
||||
{
|
||||
qname: "ip-2001-db8-abcd--.example.com",
|
||||
qtype: dns.TypeA,
|
||||
wantrcode: dns.RcodeServerFailure,
|
||||
wantAnswer: nil,
|
||||
wantTTL: 0,
|
||||
},
|
||||
}
|
||||
|
||||
for i, tc := range testCases {
|
||||
errorMsgPrefix := fmt.Sprintf("Test case %v for '%v' failed. Expected", i, tc.qname)
|
||||
ctx := context.TODO()
|
||||
w := dnstest.NewRecorder(&test.ResponseWriter{})
|
||||
r := new(dns.Msg)
|
||||
r.SetQuestion(tc.qname, tc.qtype)
|
||||
|
||||
rc, err := s.ServeDNS(ctx, w, r)
|
||||
|
||||
if err != nil {
|
||||
t.Errorf("%v no error, but got %v", errorMsgPrefix, err)
|
||||
}
|
||||
if rc != tc.wantrcode {
|
||||
t.Errorf("%v rcode %v, but got %v", errorMsgPrefix, tc.wantrcode, rc)
|
||||
}
|
||||
if len(w.Msg.Answer) == 0 && tc.wantAnswer != nil {
|
||||
t.Errorf("%v an answer, but got none", errorMsgPrefix)
|
||||
continue
|
||||
}
|
||||
if tc.wantAnswer == nil {
|
||||
if len(w.Msg.Answer) > 0 {
|
||||
t.Errorf("%v no answer, but got %v", errorMsgPrefix, w.Msg.Answer[0])
|
||||
}
|
||||
continue
|
||||
}
|
||||
if w.Msg.Answer[0].Header().Ttl != 0 {
|
||||
t.Errorf("%v TTL to be 0, but got %v", errorMsgPrefix, w.Msg.Answer[0].Header().Ttl)
|
||||
}
|
||||
if w.Msg.Answer[0].Header().Name != tc.qname {
|
||||
t.Errorf("%v Name to be %s, but got %s", errorMsgPrefix, tc.qname, w.Msg.Answer[0].Header().Name)
|
||||
}
|
||||
if w.Msg.Answer[0].Header().Rrtype != tc.qtype {
|
||||
t.Errorf("%v Type to be %d, but got %d", errorMsgPrefix, tc.qtype, w.Msg.Answer[0].Header().Rrtype)
|
||||
}
|
||||
if w.Msg.Answer[0].Header().Ttl != tc.wantTTL {
|
||||
t.Errorf("%v TTL to be %d, but got %d", errorMsgPrefix, tc.wantTTL, w.Msg.Answer[0].Header().Ttl)
|
||||
}
|
||||
switch tc.qtype {
|
||||
case dns.TypeA:
|
||||
if w.Msg.Answer[0].(*dns.A).A.String() != tc.wantAnswer[0] {
|
||||
t.Errorf("%v answer %s, but got %s", errorMsgPrefix, tc.wantAnswer[0], w.Msg.Answer[0].(*dns.A).A.String())
|
||||
}
|
||||
case dns.TypePTR:
|
||||
if w.Msg.Answer[0].(*dns.PTR).Ptr != tc.wantAnswer[0] {
|
||||
t.Errorf("%v answer %s, but got %s", errorMsgPrefix, tc.wantAnswer[0], w.Msg.Answer[0].(*dns.PTR).Ptr)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// todo:
|
||||
// 2. AAAA lookup for v4 address
|
||||
func TestServeDNSv6(t *testing.T) {
|
||||
ip, ipNet, err := net.ParseCIDR("2001:db8:abcd::/48")
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
|
||||
s := synthetic{
|
||||
Next: test.ErrorHandler(),
|
||||
Config: syntheticConfig{
|
||||
net: []*net.IPNet{{IP: ip, Mask: ipNet.Mask}},
|
||||
forward: "example.com.",
|
||||
ttl: 1800,
|
||||
prefix: "ip6-",
|
||||
},
|
||||
}
|
||||
|
||||
testCases := []struct {
|
||||
qname string
|
||||
qtype uint16
|
||||
wantrcode int
|
||||
wantAnswer []string
|
||||
wantTTL uint32
|
||||
}{
|
||||
{
|
||||
qname: "ip6-2001-db8-abcd--.example.com",
|
||||
qtype: dns.TypeAAAA,
|
||||
wantrcode: dns.RcodeSuccess,
|
||||
wantAnswer: []string{"2001:db8:abcd::"},
|
||||
wantTTL: 1800,
|
||||
},
|
||||
{
|
||||
qname: "ip6-2001-db8-abcd-1234-4567-890a-bcde-f123.example.com",
|
||||
qtype: dns.TypeAAAA,
|
||||
wantrcode: dns.RcodeSuccess,
|
||||
wantAnswer: []string{"2001:db8:abcd:1234:4567:890a:bcde:f123"},
|
||||
wantTTL: 1800,
|
||||
},
|
||||
{
|
||||
qname: "ip6-2001-db8-1234--.example.com",
|
||||
qtype: dns.TypeAAAA,
|
||||
wantrcode: dns.RcodeServerFailure,
|
||||
wantAnswer: nil,
|
||||
wantTTL: 1800,
|
||||
},
|
||||
{
|
||||
qname: "3.2.1.f.e.d.c.b.a.0.9.8.7.6.5.4.4.3.2.1.d.c.b.a.8.b.d.0.1.0.0.2.ip6.arpa.",
|
||||
qtype: dns.TypePTR,
|
||||
wantrcode: dns.RcodeSuccess,
|
||||
wantAnswer: []string{"ip6-2001-db8-abcd-1234-4567-890a-bcde-f123.example.com."},
|
||||
wantTTL: 1800,
|
||||
},
|
||||
{
|
||||
qname: "ip6-192-0-2-0.example.com",
|
||||
qtype: dns.TypeAAAA,
|
||||
wantrcode: dns.RcodeServerFailure,
|
||||
wantAnswer: nil,
|
||||
wantTTL: 0,
|
||||
},
|
||||
}
|
||||
|
||||
for i, tc := range testCases {
|
||||
errorMsgPrefix := fmt.Sprintf("Test case %v for '%v' failed. Expected", i, tc.qname)
|
||||
ctx := context.TODO()
|
||||
w := dnstest.NewRecorder(&test.ResponseWriter{})
|
||||
r := new(dns.Msg)
|
||||
r.SetQuestion(tc.qname, tc.qtype)
|
||||
|
||||
rc, err := s.ServeDNS(ctx, w, r)
|
||||
|
||||
if err != nil {
|
||||
t.Errorf("%v no error, but got %v", errorMsgPrefix, err)
|
||||
}
|
||||
if rc != tc.wantrcode {
|
||||
t.Errorf("%v rcode %v, but got %v", errorMsgPrefix, tc.wantrcode, rc)
|
||||
}
|
||||
if len(w.Msg.Answer) == 0 && tc.wantAnswer != nil {
|
||||
t.Errorf("%v an answer, but got none", errorMsgPrefix)
|
||||
continue
|
||||
}
|
||||
if tc.wantAnswer == nil {
|
||||
if len(w.Msg.Answer) > 0 {
|
||||
t.Errorf("%v no answer, but got %v", errorMsgPrefix, w.Msg.Answer[0])
|
||||
}
|
||||
continue
|
||||
}
|
||||
if w.Msg.Answer[0].Header().Name != tc.qname {
|
||||
t.Errorf("%v Name to be %s, but got %s", errorMsgPrefix, tc.qname, w.Msg.Answer[0].Header().Name)
|
||||
}
|
||||
if w.Msg.Answer[0].Header().Rrtype != tc.qtype {
|
||||
t.Errorf("%v Type to be %d, but got %d", errorMsgPrefix, tc.qtype, w.Msg.Answer[0].Header().Rrtype)
|
||||
}
|
||||
if w.Msg.Answer[0].Header().Ttl != tc.wantTTL {
|
||||
t.Errorf("%v TTL to be %d, but got %d", errorMsgPrefix, tc.wantTTL, w.Msg.Answer[0].Header().Ttl)
|
||||
}
|
||||
switch tc.qtype {
|
||||
case dns.TypeA:
|
||||
if w.Msg.Answer[0].(*dns.A).A.String() != tc.wantAnswer[0] {
|
||||
t.Errorf("%v answer %s, but got %s", errorMsgPrefix, tc.wantAnswer[0], w.Msg.Answer[0].(*dns.A).A.String())
|
||||
}
|
||||
case dns.TypePTR:
|
||||
if w.Msg.Answer[0].(*dns.PTR).Ptr != tc.wantAnswer[0] {
|
||||
t.Errorf("%v answer %s, but got %s", errorMsgPrefix, tc.wantAnswer[0], w.Msg.Answer[0].(*dns.PTR).Ptr)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user