diff --git a/doc/reference/filters.md b/doc/reference/filters.md index a8cf5fa0f6..32bdc8d26d 100644 --- a/doc/reference/filters.md +++ b/doc/reference/filters.md @@ -61,6 +61,9 @@ - [OIDCAdaptor](#OIDCAdaptor) - [Configuration](#configuration-19) - [Results](#results-19) + - [OPAFilter](#OPAFilter) + - [Configuration](#configuration-20) + - [Results](#results-20) - [Common Types](#common-types) - [pathadaptor.Spec](#pathadaptorspec) - [pathadaptor.RegexpReplace](#pathadaptorregexpreplace) @@ -1059,6 +1062,68 @@ After OIDCAdaptor handled, following OIDC related information can be obtained fr * **X-Access-Token**: The AccessToken returned by OpenId Connect or OAuth2.0 flow. + +## OPAFilter +The [Open Policy Agent (OPA)](https://www.openpolicyagent.org/docs/latest/) is an open source, +general-purpose policy engine that unifies policy enforcement across the stack. It provides a +high-level declarative language, which can be used to define and enforce policies in +Easegress API Gateway. Currently, there are 160+ built-in operators and functions we can use, +for examples `net.cidr_contains` and `contains`. + +```yaml +name: demo-pipeline +kind: Pipeline +flow: + - filter: opa-filter + jumpIf: { opaDenied: END } +filters: + - name: opa-filter + kind: OPAFilter + defaultStatus: 403 + readBody: true + includedHeaders: a,b,c + policy: | + package http + default allow = false + allow { + input.request.method == "POST" + input.request.scheme == "https" + contains(input.request.path, "/") + net.cidr_contains("127.0.0.0/24",input.request.realIP) + } +``` + +The following table lists input request fields that can be used in an OPA policy to help enforce it. + +| Name | Type | Description | Example | +|--------------------------|--------|-----------------------------------------------------------------------|--------------------------------------| +| input.request.method | string | The current http request method | "POST" | +| input.request.path | string | The current http request URL path | "/a/b/c" | +| input.request.path_parts | array | The current http request URL path parts | ["a","b","c"] | +| input.request.raw_query | string | The current http request raw query | "a=1&b=2&c=3" | +| input.request.query | map | The current http request query map | {"a":1,"b":2,"c":3} | +| input.request.headers | map | The current http request header map targeted by
includedHeaders | {"Content-Type":"application/json"} | +| input.request.scheme | string | The current http request scheme | "https" | +| input.request.realIP | string | The current http request client real IP | "127.0.0.1" | +| input.request.body | string | The current http request body string data | {"data":"xxx"} | + + +### Configuration + +| Name | Type | Description | Required | +|------------------|--------|--------------------------------------------------------------------------------------|----------| +| defaultStatus | int | The default HTTP status code when request is denied by the OPA policy decision | No | +| readBody | bool | Whether to read request body as OPA policy data on condition | No | +| includedHeaders | string | Names of the HTTP headers to be included in `input.request.headers`, comma-separated | No | +| policy | string | The OPA policy written in the Rego declarative language | Yes | + +### Results +| Value | Description | +|-----------|-----------------------------------------------| +| opaDenied | The request is denied by OPA policy decision. | + + + ## Common Types ### pathadaptor.Spec diff --git a/go.mod b/go.mod index c9aeeab8ae..b4a8c75de9 100644 --- a/go.mod +++ b/go.mod @@ -37,6 +37,7 @@ require ( github.com/megaease/yaml v0.0.0-20220804061446-4f18d6510aed github.com/mitchellh/mapstructure v1.5.0 github.com/nacos-group/nacos-sdk-go v1.1.0 + github.com/open-policy-agent/opa v0.35.0 github.com/openzipkin/zipkin-go v0.4.0 github.com/patrickmn/go-cache v2.1.0+incompatible github.com/phayes/freeport v0.0.0-20180830031419-95f893ade6f2 @@ -85,6 +86,7 @@ require ( github.com/Azure/go-autorest/logger v0.2.1 // indirect github.com/Azure/go-autorest/tracing v0.6.0 // indirect github.com/GehirnInc/crypt v0.0.0-20200316065508-bb7000b8a962 // indirect + github.com/OneOfOne/xxhash v1.2.8 // indirect github.com/PuerkitoBio/purell v1.1.1 // indirect github.com/PuerkitoBio/urlesc v0.0.0-20170810143723-de5bf2ad4578 // indirect github.com/aliyun/alibaba-cloud-sdk-go v1.61.18 // indirect @@ -127,13 +129,15 @@ require ( github.com/facebookgo/stack v0.0.0-20160209184415-751773369052 // indirect github.com/facebookgo/subset v0.0.0-20200203212716-c811ad88dec4 // indirect github.com/form3tech-oss/jwt-go v3.2.5+incompatible // indirect + github.com/ghodss/yaml v1.0.0 // indirect github.com/go-errors/errors v1.0.1 // indirect - github.com/go-kit/log v0.1.0 // indirect - github.com/go-logfmt/logfmt v0.5.0 // indirect - github.com/go-logr/logr v1.2.2 // indirect + github.com/go-kit/log v0.2.0 // indirect + github.com/go-logfmt/logfmt v0.5.1 // indirect + github.com/go-logr/logr v1.2.3 // indirect github.com/go-openapi/jsonpointer v0.19.5 // indirect github.com/go-openapi/jsonreference v0.19.5 // indirect github.com/go-openapi/swag v0.19.15 // indirect + github.com/gobwas/glob v0.2.3 // indirect github.com/gogo/protobuf v1.3.2 // indirect github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect github.com/golang/mock v1.6.0 // indirect @@ -141,7 +145,7 @@ require ( github.com/golang/snappy v0.0.4 // indirect github.com/google/btree v1.0.1 // indirect github.com/google/gnostic v0.5.7-v3refs // indirect - github.com/google/go-cmp v0.5.8 // indirect + github.com/google/go-cmp v0.5.9 // indirect github.com/google/go-containerregistry v0.8.1-0.20220414143355-892d7a808387 // indirect github.com/google/go-querystring v1.1.0 // indirect github.com/google/gofuzz v1.2.0 // indirect @@ -184,7 +188,7 @@ require ( github.com/mattn/go-colorable v0.1.12 // indirect github.com/mattn/go-isatty v0.0.14 // indirect github.com/matttproud/golang_protobuf_extensions v1.0.2-0.20181231171920-c182affec369 // indirect - github.com/miekg/dns v1.1.41 // indirect + github.com/miekg/dns v1.1.43 // indirect github.com/mitchellh/go-homedir v1.1.0 // indirect github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect github.com/modern-go/reflect2 v1.0.2 // indirect @@ -197,15 +201,15 @@ require ( github.com/pierrec/lz4/v4 v4.1.15 // indirect github.com/pkg/errors v0.9.1 // indirect github.com/pmezard/go-difflib v1.0.0 // indirect - github.com/prometheus/client_golang v1.12.1 // indirect + github.com/prometheus/client_golang v1.13.0 // indirect github.com/prometheus/client_model v0.2.0 // indirect - github.com/prometheus/common v0.32.1 // indirect - github.com/prometheus/procfs v0.7.3 // indirect + github.com/prometheus/common v0.37.0 // indirect + github.com/prometheus/procfs v0.8.0 // indirect github.com/prometheus/statsd_exporter v0.21.0 // indirect github.com/rickb777/date v1.13.0 // indirect github.com/rickb777/plural v1.2.1 // indirect github.com/robfig/cron/v3 v3.0.1 // indirect - github.com/sirupsen/logrus v1.8.1 // indirect + github.com/sirupsen/logrus v1.9.0 // indirect github.com/soheilhy/cmux v0.1.5 // indirect github.com/spaolacci/murmur3 v1.1.0 github.com/spf13/afero v1.8.2 // indirect @@ -219,6 +223,7 @@ require ( github.com/xeipuuv/gojsonreference v0.0.0-20180127040603-bd5ef7bd5415 // indirect github.com/xiang90/probing v0.0.0-20190116061207-43a291ad63a2 // indirect github.com/xlab/treeprint v0.0.0-20181112141820-a009c3971eca // indirect + github.com/yashtewari/glob-intersection v0.1.0 // indirect go.etcd.io/bbolt v1.3.6 // indirect go.etcd.io/etcd/client/pkg/v3 v3.5.4 // indirect go.etcd.io/etcd/client/v2 v2.305.4 // indirect @@ -234,7 +239,7 @@ require ( go.opentelemetry.io/otel/sdk/export/metric v0.20.0 // indirect go.opentelemetry.io/otel/sdk/metric v0.20.0 // indirect go.opentelemetry.io/otel/trace v0.20.0 // indirect - go.opentelemetry.io/proto/otlp v0.7.0 // indirect + go.opentelemetry.io/proto/otlp v0.16.0 // indirect go.starlark.net v0.0.0-20200306205701-8dd3e2ee1dd5 // indirect go.uber.org/atomic v1.9.0 // indirect go.uber.org/multierr v1.8.0 // indirect @@ -272,10 +277,10 @@ require ( sigs.k8s.io/yaml v1.3.0 // indirect ) -replace github.com/go-openapi/spec => github.com/go-openapi/spec v0.19.3 - -replace github.com/buger/jsonparser => github.com/buger/jsonparser v1.1.1 - -replace k8s.io/apiextensions-apiserver => k8s.io/apiextensions-apiserver v0.24.1 - -replace k8s.io/cli-runtime => k8s.io/cli-runtime v0.24.1 +replace ( + github.com/buger/jsonparser => github.com/buger/jsonparser v1.1.1 + github.com/go-openapi/spec => github.com/go-openapi/spec v0.19.3 + go.opentelemetry.io/proto/otlp => go.opentelemetry.io/proto/otlp v0.7.0 + k8s.io/apiextensions-apiserver => k8s.io/apiextensions-apiserver v0.24.1 + k8s.io/cli-runtime => k8s.io/cli-runtime v0.24.1 +) diff --git a/go.sum b/go.sum index 8f926c0340..f5f85f0cd4 100644 --- a/go.sum +++ b/go.sum @@ -105,6 +105,8 @@ github.com/MicahParks/keyfunc v1.5.1/go.mod h1:IdnCilugA0O/99dW+/MkvlyrsX8+L8+x9 github.com/NYTimes/gziphandler v0.0.0-20170623195520-56545f4a5d46/go.mod h1:3wb06e3pkSAbeQ52E9H9iFoQsEEwGN64994WTCIhntQ= github.com/NYTimes/gziphandler v1.1.1/go.mod h1:n/CVRwUEOgIxrgPvAQhUUr9oeUtvrhMomdKFjzJNB0c= github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU= +github.com/OneOfOne/xxhash v1.2.8 h1:31czK/TI9sNkxIKfaUfGlU47BAxQ0ztGgd9vPyqimf8= +github.com/OneOfOne/xxhash v1.2.8/go.mod h1:eZbhyaAYD41SGSSsnmcpxVoRiQ/MPUTjUdIIOT9Um7Q= github.com/PuerkitoBio/purell v1.1.1 h1:WEQqlqaGbrPkxLJWfBwQmfEAE1Z7ONdDLqrN38tNFfI= github.com/PuerkitoBio/purell v1.1.1/go.mod h1:c11w/QuzBsJSee3cPx9rAFu61PvFxuPbtSwDGJws/X0= github.com/PuerkitoBio/urlesc v0.0.0-20170810143723-de5bf2ad4578 h1:d+Bc7a5rLufV/sSk/8dngufqelfh6jnri85riMAaF/M= @@ -127,6 +129,7 @@ github.com/antlr/antlr4/runtime/Go/antlr v0.0.0-20210826220005-b48c857c3a0e/go.m github.com/antlr/antlr4/runtime/Go/antlr v0.0.0-20211221011931-643d94fcab96 h1:2P/dm3KbCLnRHQN/Ma50elhMx1Si9loEZe5hOrsuvuE= github.com/antlr/antlr4/runtime/Go/antlr v0.0.0-20211221011931-643d94fcab96/go.mod h1:F7bn7fEU90QkQ3tnmaTx3LTKLEDqnwWODIYppRQ5hnY= github.com/armon/circbuf v0.0.0-20150827004946-bbbad097214e/go.mod h1:3U/XgcO3hCbHZ8TKRvWD2dDTCfh9M9ya+I9JpbB7O8o= +github.com/armon/consul-api v0.0.0-20180202201655-eb2c6b5be1b6/go.mod h1:grANhF5doyWs3UAsr3K4I6qtAmlQcZDesFNEHPZAzj8= github.com/armon/go-metrics v0.0.0-20180917152333-f0300d1749da/go.mod h1:Q73ZrmVTwzkszR9V5SSuryQ31EELlFMUz1kKyl939pY= github.com/armon/go-metrics v0.3.10 h1:FR+drcQStOe+32sYyJYyZ7FIdgoGGBnwLl+flodp8Uo= github.com/armon/go-metrics v0.3.10/go.mod h1:4O98XIr/9W0sxpJ8UaYkvjk10Iff7SnFrb4QAOwNTFc= @@ -184,6 +187,7 @@ github.com/buger/jsonparser v1.1.1 h1:2PnMjfWD7wBILjqQbt530v576A/cAbQvEW9gGIpYMU github.com/buger/jsonparser v1.1.1/go.mod h1:6RYKKt7H4d4+iWqouImQ9R2FZql3VbhNgx27UK13J/0= github.com/buraksezer/consistent v0.9.0 h1:Zfs6bX62wbP3QlbPGKUhqDw7SmNkOzY5bHZIYXYpR5g= github.com/buraksezer/consistent v0.9.0/go.mod h1:6BrVajWq7wbKZlTOUPs/XVfR8c0maujuPowduSpZqmw= +github.com/bytecodealliance/wasmtime-go v0.31.0/go.mod h1:q320gUxqyI8yB+ZqRuaJOEnGkAnHh6WtJjMaT2CW4wI= github.com/bytecodealliance/wasmtime-go v1.0.0 h1:9u9gqaUiaJeN5IoD1L7egD8atOnTGyJcNp8BhkL9cUU= github.com/bytecodealliance/wasmtime-go v1.0.0/go.mod h1:jjlqQbWUfVSbehpErw3UoWFndBXRRMvfikYH6KsCwOg= github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU= @@ -192,6 +196,7 @@ github.com/census-instrumentation/opencensus-proto v0.3.0/go.mod h1:f6KPmirojxKA github.com/certifi/gocertifi v0.0.0-20191021191039-0944d244cd40/go.mod h1:sGbDF6GwGcLpkNXPUTkMRoywsNa/ol15pxFe6ERfguA= github.com/certifi/gocertifi v0.0.0-20200922220541-2c3bb06c6054 h1:uH66TXeswKn5PW5zdZ39xEwfS9an067BirqA+P4QaLI= github.com/certifi/gocertifi v0.0.0-20200922220541-2c3bb06c6054/go.mod h1:sGbDF6GwGcLpkNXPUTkMRoywsNa/ol15pxFe6ERfguA= +github.com/cespare/xxhash v1.1.0 h1:a6HrQnmkObjyL+Gs60czilIUGqrzKutQD6XZog3p+ko= github.com/cespare/xxhash v1.1.0/go.mod h1:XrSqR1VqqWfGrhpAt58auRo0WTKS1nRRg3ghfAqPWnc= github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs= github.com/cespare/xxhash/v2 v2.1.2 h1:YRXhKfTDauu4ajMg1TPgFO5jnlC2HCbmLXMcTG5cbYE= @@ -223,14 +228,18 @@ github.com/cockroachdb/errors v1.2.4/go.mod h1:rQD95gz6FARkaKkQXUksEje/d9a6wBJoC github.com/cockroachdb/logtags v0.0.0-20190617123548-eb05cc24525f h1:o/kfcElHqOiXqcou5a3rIlMc7oJbMQkeLk0VQJ7zgqY= github.com/cockroachdb/logtags v0.0.0-20190617123548-eb05cc24525f/go.mod h1:i/u985jwjWRlyHXQbwatDASoW0RMlZ/3i9yJHE2xLkI= github.com/coreos/bbolt v1.3.2/go.mod h1:iRUV2dpdMOn7Bo10OQBFzIJO9kkE559Wcmn+qkEiiKk= +github.com/coreos/etcd v3.3.10+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE= github.com/coreos/etcd v3.3.13+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE= +github.com/coreos/go-etcd v2.0.0+incompatible/go.mod h1:Jez6KQU2B/sWsbdaef3ED8NzMklzPG4d5KIOhIy30Tk= github.com/coreos/go-oidc v2.1.0+incompatible/go.mod h1:CgnwVTmzoESiwO9qyAFEMiHoZ1nMCKZlZ9V6mm3/LKc= +github.com/coreos/go-semver v0.2.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk= github.com/coreos/go-semver v0.3.0 h1:wkHLiw0WNATZnSG7epLsujiMCgPAc9xhjJ4tgnAxmfM= github.com/coreos/go-semver v0.3.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk= github.com/coreos/go-systemd v0.0.0-20190321100706-95778dfbb74e/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4= github.com/coreos/go-systemd/v22 v22.3.2 h1:D9/bQk5vlXQFZ6Kwuu6zaiXJ9oTPe68++AzAJc1DzSI= github.com/coreos/go-systemd/v22 v22.3.2/go.mod h1:Y58oyj3AT4RCenI/lSvhwexgC+NSVTIJ3seZv2GcEnc= github.com/coreos/pkg v0.0.0-20180928190104-399ea9e2e55f/go.mod h1:E3G3o1h8I7cfcXa63jLwjI0eiQQMgzzUDFVpN/nH/eA= +github.com/cpuguy83/go-md2man v1.0.10/go.mod h1:SmD6nW6nTyfqj6ABTjUi3V3JVMnlJmwcJI5acqYI6dE= github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU= github.com/cpuguy83/go-md2man/v2 v2.0.0/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU= github.com/cpuguy83/go-md2man/v2 v2.0.1/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o= @@ -240,7 +249,13 @@ github.com/creack/pty v1.1.11/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c= github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= +github.com/dgraph-io/badger/v3 v3.2103.2 h1:dpyM5eCJAtQCBcMCZcT4UBZchuTJgCywerHHgmxfxM8= +github.com/dgraph-io/badger/v3 v3.2103.2/go.mod h1:RHo4/GmYcKKh5Lxu63wLEMHJ70Pac2JqZRYGhlyAo2M= +github.com/dgraph-io/ristretto v0.1.0 h1:Jv3CGQHp9OjuMBSne1485aDpUkTKEcUqF+jm/LuerPI= +github.com/dgraph-io/ristretto v0.1.0/go.mod h1:fux0lOrBhrVCJd3lcTHsIJhq1T2rokOu6v9Vcb3Q9ug= github.com/dgrijalva/jwt-go v3.2.0+incompatible/go.mod h1:E3ru+11k8xSBh+hMPgOLZmtrrCbhqsmaPHjLKYnJCaQ= +github.com/dgryski/go-farm v0.0.0-20190423205320-6a90982ecee2/go.mod h1:SqUrOPUnsFjfmXRMNPybcSiG0BgUW2AuFH8PAnS2iTw= +github.com/dgryski/go-farm v0.0.0-20200201041132-a6ae2369ad13/go.mod h1:SqUrOPUnsFjfmXRMNPybcSiG0BgUW2AuFH8PAnS2iTw= github.com/dgryski/go-sip13 v0.0.0-20181026042036-e10d5fee7954/go.mod h1:vAd38F8PWV+bWy6jNmig1y/TA+kYO4g3RSRF0IAv0no= github.com/digitalocean/godo v1.41.0 h1:WYy7MIVVhTMZUNB+UA3irl2V9FyDJeDttsifYyn7jYA= github.com/digitalocean/godo v1.41.0/go.mod h1:p7dOjjtSBqCTUksqtA5Fd3uaKs9kyTq2xcz76ulEJRU= @@ -299,15 +314,19 @@ github.com/form3tech-oss/jwt-go v3.2.5+incompatible h1:/l4kBbb4/vGSsdtB5nUe8L7B9 github.com/form3tech-oss/jwt-go v3.2.5+incompatible/go.mod h1:pbq4aXjuKjdthFRnoDwaVPLA+WlJuPGy+QneDUgJi2k= github.com/fortytw2/leaktest v1.3.0 h1:u8491cBMTQ8ft8aeV+adlcytMZylmA5nnwwkRZjI8vw= github.com/fortytw2/leaktest v1.3.0/go.mod h1:jDsjWgpAGjm2CA7WthBh/CdZYEPF31XHquHwclZch5g= +github.com/foxcpp/go-mockdns v0.0.0-20210729171921-fb145fc6f897 h1:E52jfcE64UG42SwLmrW0QByONfGynWuzBvm86BoB9z8= +github.com/foxcpp/go-mockdns v0.0.0-20210729171921-fb145fc6f897/go.mod h1:lgRN6+KxQBawyIghpnl5CezHFGS9VLzvtVlwxvzXTQ4= github.com/frankban/quicktest v1.11.3/go.mod h1:wRf/ReqHper53s+kmmSZizM8NamnL3IM0I9ntUbOk+k= github.com/frankban/quicktest v1.14.3 h1:FJKSZTDHjyhriyC81FLQ0LY93eSai0ZyR/ZIkd3ZUKE= github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo= github.com/fsnotify/fsnotify v1.4.9/go.mod h1:znqG4EE+3YCdAaPaxE2ZRY/06pZUdp0tY4IgpuI1SZQ= +github.com/fsnotify/fsnotify v1.5.1/go.mod h1:T3375wBYaZdLLcVNkcVbzGHY7f1l/uK5T5Ai1i3InKU= github.com/fsnotify/fsnotify v1.5.4 h1:jRbGcIw6P2Meqdwuo0H1p6JVLbL5DHKAKlYndzMwVZI= github.com/fsnotify/fsnotify v1.5.4/go.mod h1:OVB6XrOHzAwXMpEM7uPOzcehqUV2UqJxmVXmkdnm1bU= github.com/getkin/kin-openapi v0.76.0/go.mod h1:660oXbgy5JFMKreazJaQTw7o+X00qeSyhcnluiMv+Xg= github.com/getsentry/raven-go v0.2.0 h1:no+xWJRb5ZI7eE8TWgIq1jLulQiIoLG0IfYxv5JYMGs= github.com/getsentry/raven-go v0.2.0/go.mod h1:KungGk8q33+aIAZUIVWZDr2OfAEBsO49PX4NzFV5kcQ= +github.com/ghodss/yaml v1.0.0 h1:wQHKEahhL6wmXdzwWG11gIVCkOv05bNOh+Rxn0yngAk= github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04= github.com/go-chi/chi/v5 v5.0.7 h1:rDTPXLDHGATaeHvVlLcR4Qe0zftYethFucbjVQ1PxU8= github.com/go-chi/chi/v5 v5.0.7/go.mod h1:DslCQbL2OYiznFReuXYUmQ2hGd1aDpCnlMNITLSKoi8= @@ -318,17 +337,19 @@ github.com/go-gl/glfw/v3.3/glfw v0.0.0-20191125211704-12ad95a8df72/go.mod h1:tQ2 github.com/go-gl/glfw/v3.3/glfw v0.0.0-20200222043503-6f7a984d4dc4/go.mod h1:tQ2UAYgL5IevRw8kRxooKSPJfGvJ9fJQFa0TUsXzTg8= github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as= github.com/go-kit/kit v0.9.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as= -github.com/go-kit/log v0.1.0 h1:DGJh0Sm43HbOeYDNnVZFl8BvcYVvjD5bqYJvp0REbwQ= github.com/go-kit/log v0.1.0/go.mod h1:zbhenjAZHb184qTLMA9ZjW7ThYL0H2mk7Q6pNt4vbaY= +github.com/go-kit/log v0.2.0 h1:7i2K3eKTos3Vc0enKCfnVcgHh2olr/MyfboYq7cAcFw= +github.com/go-kit/log v0.2.0/go.mod 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h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A= +github.com/go-logr/logr v1.2.3 h1:2DntVwHkVopvECVRSlL5PSo9eG+cAkDCuckLubN+rq0= +github.com/go-logr/logr v1.2.3/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A= github.com/go-logr/zapr v1.2.0/go.mod h1:Qa4Bsj2Vb+FAVeAKsLD8RLQ+YRJB8YDmOAKxaBQf7Ro= github.com/go-openapi/jsonpointer v0.19.3/go.mod h1:Pl9vOtqEWErmShwVjC8pYs9cog34VGT37dQOVbmoatg= github.com/go-openapi/jsonpointer v0.19.5 h1:gZr+CIYByUqjcgeLXnQu2gHYQC9o73G2XUeOFYEICuY= @@ -340,12 +361,13 @@ github.com/go-openapi/swag v0.19.5/go.mod h1:POnQmlKehdgb5mhVOsnJFsivZCEZ/vjK9gh github.com/go-openapi/swag v0.19.14/go.mod h1:QYRuS/SOXUCsnplDa677K7+DxSOj6IPNl/eQntq43wQ= github.com/go-openapi/swag v0.19.15 h1:D2NRCBzS9/pEY3gP9Nl8aDqGUcPFrwG2p+CNFrLyrCM= github.com/go-openapi/swag v0.19.15/go.mod h1:QYRuS/SOXUCsnplDa677K7+DxSOj6IPNl/eQntq43wQ= -github.com/go-stack/stack v1.8.0 h1:5SgMzNM5HxrEjV0ww2lTmX6E2Izsfxas4+YHWRs3Lsk= github.com/go-stack/stack v1.8.0/go.mod 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github.com/golang-jwt/jwt/v4 v4.4.2 h1:rcc4lwaZgFMCZ5jxF9ABolDcIHdBytAFgqFPbSJQAYs= github.com/golang-jwt/jwt/v4 v4.4.2/go.mod h1:m21LjoU+eqJr34lmDMbreY2eSTRJ1cv77w39/MY0Ch0= github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q= +github.com/golang/glog v1.0.0 h1:nfP3RFugxnNRyKgeWd4oI1nYvXpxrx8ck8ZrcizshdQ= github.com/golang/glog v1.0.0/go.mod h1:EWib/APOK0SL3dFbYqvxE3UYd8E6s1ouQ7iEp/0LWV4= github.com/golang/groupcache v0.0.0-20190129154638-5b532d6fd5ef/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc= github.com/golang/groupcache v0.0.0-20190702054246-869f871628b6/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc= @@ -406,6 +429,8 @@ github.com/google/btree v1.0.1 h1:gK4Kx5IaGY9CD5sPJ36FHiBJ6ZXl0kilRiiCj+jdYp4= github.com/google/btree v1.0.1/go.mod h1:xXMiIv4Fb/0kKde4SpL7qlzvu5cMJDRkFDxJfI9uaxA= github.com/google/cel-go v0.10.1/go.mod h1:U7ayypeSkw23szu4GaQTPJGx66c20mx8JklMSxrmI1w= github.com/google/cel-spec v0.6.0/go.mod h1:Nwjgxy5CbjlPrtCWjeDjUyKMl8w41YBYGjsyDdqk0xA= +github.com/google/flatbuffers v1.12.1 h1:MVlul7pQNoDzWRLTw5imwYsl+usrS1TXG2H4jg6ImGw= +github.com/google/flatbuffers v1.12.1/go.mod h1:1AeVuKshWv4vARoZatz6mlQ0JxURH0Kv5+zNeJKJCa8= github.com/google/gnostic v0.5.7-v3refs h1:FhTMOKj2VhjpouxvWJAV1TL304uMlb9zcDqkl6cEI54= github.com/google/gnostic v0.5.7-v3refs/go.mod h1:73MKFl6jIHelAJNaBGFzt3SPtZULs9dYrGFt8OiIsHQ= github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M= @@ -421,8 +446,9 @@ github.com/google/go-cmp v0.5.4/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/ github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE= github.com/google/go-cmp v0.5.6/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE= github.com/google/go-cmp v0.5.7/go.mod h1:n+brtR0CgQNWTVd5ZUFpTBC8YFBDLK/h/bpaJ8/DtOE= -github.com/google/go-cmp v0.5.8 h1:e6P7q2lk1O+qJJb4BtCQXlK8vWEO8V1ZeuEdJNOqZyg= github.com/google/go-cmp v0.5.8/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY= +github.com/google/go-cmp v0.5.9 h1:O2Tfq5qg4qc4AmwVlvv0oLiVAGB7enBSJ2x2DqQFi38= +github.com/google/go-cmp v0.5.9/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY= github.com/google/go-containerregistry v0.8.1-0.20220414143355-892d7a808387 h1:GWICy4b02s8EA1M9H5krRQ48BKpIHO5LtBBm2BQLhx0= github.com/google/go-containerregistry v0.8.1-0.20220414143355-892d7a808387/go.mod h1:eTLvLZaEe2FoQsb25t7BLxQQryyrwHTzFfwxN87mhAw= github.com/google/go-querystring v1.0.0/go.mod h1:odCYkC5MyYFN7vkCjXpyrEuKhc/BUO6wN/zVPAxq5ck= @@ -605,6 +631,8 @@ github.com/kisielk/errcheck v1.1.0/go.mod h1:EZBBE59ingxPouuu3KfxchcWSUPOHkagtvW github.com/kisielk/errcheck v1.2.0/go.mod h1:/BMXB+zMLi60iA8Vv6Ksmxu/1UDYcXs4uQLJ+jE2L00= github.com/kisielk/errcheck v1.5.0/go.mod h1:pFxgyoBC7bSaBwPgfKdkLd5X25qrDl4LWUI2bnpBCr8= github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck= +github.com/klauspost/compress v1.12.3/go.mod h1:8dP1Hq4DHOhN9w426knH3Rhby4rFm6D8eO+e+Dq5Gzg= +github.com/klauspost/compress v1.13.5/go.mod h1:/3/Vjq9QcHkK5uEr5lBEmyoZ1iFhe47etQ6QUkpK6sk= github.com/klauspost/compress v1.13.6/go.mod h1:/3/Vjq9QcHkK5uEr5lBEmyoZ1iFhe47etQ6QUkpK6sk= github.com/klauspost/compress v1.15.9 h1:wKRjX6JRtDdrE9qwa4b/Cip7ACOshUI4smpCQanqjSY= github.com/klauspost/compress v1.15.9/go.mod h1:PhcZ0MbTNciWF3rruxRgKxI5NkcHHrHUDtV4Yw2GlzU= @@ -648,6 +676,7 @@ github.com/liggitt/tabwriter v0.0.0-20181228230101-89fcab3d43de h1:9TO3cAIGXtEhn github.com/liggitt/tabwriter v0.0.0-20181228230101-89fcab3d43de/go.mod h1:zAbeS9B/r2mtpb6U+EI2rYA5OAXxsYw6wTamcNW+zcE= github.com/lucas-clemente/quic-go v0.30.0 h1:nwLW0h8ahVQ5EPTIM7uhl/stHqQDea15oRlYKZmw2O0= github.com/lucas-clemente/quic-go v0.30.0/go.mod h1:ssOrRsOmdxa768Wr78vnh2B8JozgLsMzG/g+0qEC7uk= +github.com/magiconair/properties v1.8.0/go.mod h1:PppfXfuXeibc/6YijjN8zIbojt8czPbwD3XqdrwzmxQ= github.com/magiconair/properties v1.8.1/go.mod 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h1:kF/7m/ZU+0D4Jj5eZ41Zm3IH/J8OElK1Qtd7tVKAwLk= github.com/toolkits/concurrent v0.0.0-20150624120057-a4371d70e3e3/go.mod h1:QDlpd3qS71vYtakd2hmdpqhJ9nwv6mD6A30bQ1BPBFE= github.com/tv42/httpunix v0.0.0-20150427012821-b75d8614f926/go.mod h1:9ESjWnEqriFuLhtthL60Sar/7RFoluCcXsuvEwTV5KM= +github.com/ugorji/go/codec v0.0.0-20181204163529-d75b2dcb6bc8/go.mod h1:VFNgLljTbGfSG7qAOspJ7OScBnGdDN/yBr0sguwnwf0= github.com/urfave/cli/v2 v2.3.0/go.mod h1:LJmUH05zAU44vOAcrfzZQKsZbVcdbOG8rtL3/XcUArI= github.com/valyala/bytebufferpool v1.0.0 h1:GqA5TC/0021Y/b9FG4Oi9Mr3q7XYx6KllzawFIhcdPw= github.com/valyala/bytebufferpool v1.0.0/go.mod h1:6bBcMArwyJ5K/AmCkWv1jt77kVWyCJ6HpOuEn7z0Csc= @@ -932,6 +978,10 @@ github.com/xiang90/probing v0.0.0-20190116061207-43a291ad63a2 h1:eY9dn8+vbi4tKz5 github.com/xiang90/probing v0.0.0-20190116061207-43a291ad63a2/go.mod h1:UETIi67q53MR2AWcXfiuqkDkRtnGDLqkBTpCHuJHxtU= github.com/xlab/treeprint v0.0.0-20181112141820-a009c3971eca h1:1CFlNzQhALwjS9mBAUkycX616GzgsuYUOCHA5+HSlXI= github.com/xlab/treeprint v0.0.0-20181112141820-a009c3971eca/go.mod h1:ce1O1j6UtZfjr22oyGxGLbauSBp2YVXpARAosm7dHBg= +github.com/xordataexchange/crypt v0.0.3-0.20170626215501-b2862e3d0a77/go.mod h1:aYKd//L2LvnjZzWKhF00oedf4jCCReLcmhLdhm1A27Q= +github.com/yashtewari/glob-intersection v0.0.0-20180916065949-5c77d914dd0b/go.mod h1:HptNXiXVDcJjXe9SqMd0v2FsL9f8dz4GnXgltU6q/co= +github.com/yashtewari/glob-intersection v0.1.0 h1:6gJvMYQlTDOL3dMsPF6J0+26vwX9MB8/1q3uAdhmTrg= +github.com/yashtewari/glob-intersection v0.1.0/go.mod h1:LK7pIC3piUjovexikBbJ26Yml7g8xa5bsjfx2v1fwok= github.com/yl2chen/cidranger v1.0.2 h1:lbOWZVCG1tCRX4u24kuM1Tb4nHqWkDxwLdoS+SevawU= github.com/yl2chen/cidranger v1.0.2/go.mod h1:9U1yz7WPYDwf0vpNWFaeRh0bjwz5RVgRy/9UEQfHl0g= github.com/yuin/goldmark v1.1.25/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74= @@ -1005,6 +1055,7 @@ go.uber.org/atomic v1.6.0/go.mod h1:sABNBOSYdrvTF6hTgEIbc7YasKWGhgEQZyfxyTvoXHQ= go.uber.org/atomic v1.7.0/go.mod h1:fEN4uk6kAWBTFdckzkM89CLk9XfWZrxpCo0nPH17wJc= go.uber.org/atomic v1.9.0 h1:ECmE8Bn/WFTYwEW/bpKD3M8VtR/zQVbavAoalC1PYyE= go.uber.org/atomic v1.9.0/go.mod h1:fEN4uk6kAWBTFdckzkM89CLk9XfWZrxpCo0nPH17wJc= +go.uber.org/automaxprocs v1.4.0/go.mod h1:/mTEdr7LvHhs0v7mjdxDreTz1OG5zdZGqgOnhWiR/+Q= go.uber.org/goleak v1.1.10/go.mod h1:8a7PlsEVH3e/a/GLqe5IIrQx6GzcnRmZEufDUTk4A7A= go.uber.org/goleak v1.1.12 h1:gZAh5/EyT/HQwlpkCy6wTpqfH9H8Lz8zbm3dZh+OyzA= go.uber.org/multierr v1.1.0/go.mod h1:wR5kodmAFQ0UK8QlbwjlSNy0Z68gJhDJUG5sjR94q/0= @@ -1021,6 +1072,7 @@ go.uber.org/zap v1.23.0 h1:OjGQ5KQDEUawVHxNwQgPpiypGHOxo2mNZsOqTak4fFY= go.uber.org/zap v1.23.0/go.mod h1:D+nX8jyLsMHMYrln8A0rJjFt/T/9/bGgIhAqxv5URuY= golang.org/x/crypto v0.0.0-20180904163835-0709b304e793/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4= golang.org/x/crypto v0.0.0-20181029021203-45a5f77698d3/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4= +golang.org/x/crypto v0.0.0-20181203042331-505ab145d0a9/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4= golang.org/x/crypto v0.0.0-20190228161510-8dd112bcdc25/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w= golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w= golang.org/x/crypto v0.0.0-20190510104115-cbcb75029529/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI= @@ -1136,6 +1188,7 @@ golang.org/x/net v0.0.0-20210525063256-abc453219eb5/go.mod h1:9nx3DQGgdP8bBQD5qx golang.org/x/net v0.0.0-20210825183410-e898025ed96a/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y= golang.org/x/net v0.0.0-20210917221730-978cfadd31cf/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y= golang.org/x/net v0.0.0-20211015210444-4f30a5c0130f/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y= +golang.org/x/net v0.0.0-20211111083644-e5c967477495/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y= golang.org/x/net v0.0.0-20211112202133-69e39bad7dc2/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y= golang.org/x/net v0.0.0-20211118161319-6a13c67c3ce4/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y= golang.org/x/net v0.0.0-20211216030914-fe4d6282115f/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y= @@ -1191,6 +1244,7 @@ golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e/go.mod h1:STP8DvDyc/dI5b8T5h golang.org/x/sys v0.0.0-20181026203630-95b1ffbd15a5/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= golang.org/x/sys v0.0.0-20181107165924-66b7b1311ac8/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= golang.org/x/sys v0.0.0-20181116152217-5ac8a444bdc5/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= +golang.org/x/sys v0.0.0-20181205085412-a5c9d58dba9a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= golang.org/x/sys v0.0.0-20190222072716-a9d3bda3a223/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= golang.org/x/sys v0.0.0-20190312061237-fead79001313/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= @@ -1262,6 +1316,7 @@ golang.org/x/sys v0.0.0-20210831042530-f4d43177bf5e/go.mod h1:oPkhp1MJrh7nUepCBc golang.org/x/sys v0.0.0-20210908233432-aa78b53d3365/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= golang.org/x/sys v0.0.0-20210927094055-39ccf1dd6fa6/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= golang.org/x/sys v0.0.0-20211019181941-9d821ace8654/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= +golang.org/x/sys v0.0.0-20211110154304-99a53858aa08/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= golang.org/x/sys v0.0.0-20211124211545-fe61309f8881/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= golang.org/x/sys v0.0.0-20211210111614-af8b64212486/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= golang.org/x/sys v0.0.0-20211216021012-1d35b9e2eb4e/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= @@ -1273,6 +1328,7 @@ golang.org/x/sys v0.0.0-20220328115105-d36c6a25d886/go.mod h1:oPkhp1MJrh7nUepCBc golang.org/x/sys v0.0.0-20220412211240-33da011f77ad/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= golang.org/x/sys v0.0.0-20220502124256-b6088ccd6cba/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= +golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= golang.org/x/sys v0.0.0-20220728004956-3c1f35247d10 h1:WIoqL4EROvwiPdUtaip4VcDdpZ4kha7wBWZrbVKCIZg= golang.org/x/sys v0.0.0-20220728004956-3c1f35247d10/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= diff --git a/pkg/filters/opafilter/opafilter.go b/pkg/filters/opafilter/opafilter.go new file mode 100644 index 0000000000..64f6d51ae9 --- /dev/null +++ b/pkg/filters/opafilter/opafilter.go @@ -0,0 +1,197 @@ +/* + * Copyright (c) 2017, MegaEase + * All rights reserved. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package opafilter + +import ( + stdctx "context" + "errors" + "fmt" + "net/textproto" + "strings" + "time" + + "github.com/open-policy-agent/opa/rego" + + "github.com/megaease/easegress/pkg/context" + "github.com/megaease/easegress/pkg/filters" + "github.com/megaease/easegress/pkg/logger" + "github.com/megaease/easegress/pkg/protocols/httpprot" + "github.com/megaease/easegress/pkg/util/stringtool" +) + +// https://www.openpolicyagent.org/docs/v0.35.0/ +const ( + kindName = "OPAFilter" + resultFiltered = "opaDenied" + opaErrorHeaderKey = "x-eg-opa-error" +) + +var ( + errOpaNoResult = errors.New("received no results from rego policy. Are you setting data.http.allow") + errOpaInvalidResultType = errors.New("got an invalid type from repo policy. Only a boolean or map is valid") +) + +var kind = &filters.Kind{ + Name: kindName, + Description: "OPAFilter implement OpenPolicyAgent function", + Results: []string{resultFiltered}, + DefaultSpec: func() filters.Spec { + return &Spec{ + DefaultStatus: 403, + } + }, + CreateInstance: func(spec filters.Spec) filters.Filter { + return &OPAFilter{spec: spec.(*Spec)} + }, +} + +type OPAFilter struct { + spec *Spec + includedHeadersParsed []string `yaml:"includedHeadersParsed"` + regoQuery *rego.PreparedEvalQuery +} + +type Spec struct { + filters.BaseSpec `yaml:",inline"` + DefaultStatus int `yaml:"defaultStatus"` + IncludedHeaders string `yaml:"includedHeaders"` + ReadBody bool `yaml:"readBody"` + Policy string `yaml:"policy"` +} + +func init() { + filters.Register(kind) +} + +func (o *OPAFilter) Name() string { + return o.spec.Name() +} + +func (o *OPAFilter) Spec() filters.Spec { + return o.spec +} + +func (o *OPAFilter) Kind() *filters.Kind { + return kind +} + +func (o *OPAFilter) Init() { + o.includedHeadersParsed = strings.Split(o.spec.IncludedHeaders, ",") + if o.spec.DefaultStatus == 0 { + o.spec.DefaultStatus = 403 + } + n := 0 + for i := range o.includedHeadersParsed { + scrubbed := strings.ReplaceAll(o.includedHeadersParsed[i], " ", "") + if scrubbed != "" { + o.includedHeadersParsed[n] = textproto.CanonicalMIMEHeaderKey(scrubbed) + n++ + } + } + o.includedHeadersParsed = o.includedHeadersParsed[:n] + ctx, cancelFunc := stdctx.WithTimeout(stdctx.Background(), 5*time.Second) + query, err := rego.New( + rego.Query("result = data.http.allow"), + rego.Module("inline.rego.policy", o.spec.Policy), + ).PrepareForEval(ctx) + defer cancelFunc() + if err != nil { + panic(fmt.Sprintf("cannot create PrepareForEval rego query: %s", err)) + } else { + o.regoQuery = &query + } +} + +func (o *OPAFilter) Inherit(previousGeneration filters.Filter) { + o.Init() + previousGeneration.Close() +} + +func (o *OPAFilter) Handle(ctx *context.Context) (result string) { + req := ctx.GetInputRequest().(*httpprot.Request) + var rw *httpprot.Response + if rw, _ = ctx.GetOutputResponse().(*httpprot.Response); rw == nil { + rw, _ = httpprot.NewResponse(nil) + ctx.SetOutputResponse(rw) + } + return o.evalRequest(req, rw) +} + +func (o *OPAFilter) Status() interface{} { + return nil +} + +func (o *OPAFilter) Close() { +} + +func (o *OPAFilter) evalRequest(r *httpprot.Request, w *httpprot.Response) string { + headers := map[string]string{} + + for key, value := range r.HTTPHeader() { + if len(value) > 0 && stringtool.StrInSlice(key, o.includedHeadersParsed) { + headers[key] = strings.Join(value, ", ") + } + } + + var body string + if o.spec.ReadBody { + if !r.IsStream() { + body = string(r.RawPayload()) + } else { + logger.Errorf("body is stream, cannot set as input request body") + } + } + pathParts := strings.Split(strings.Trim(r.Path(), "/"), "/") + input := map[string]any{ + "request": map[string]any{ + "method": r.Std().Method, + "path": r.Std().URL.Path, + "path_parts": pathParts, + "raw_query": r.Std().URL.RawQuery, + "query": map[string][]string(r.Std().URL.Query()), + "headers": headers, + "scheme": r.Scheme(), + "realIP": r.RealIP(), + "body": body, + }, + } + results, err := o.regoQuery.Eval(r.Context(), rego.EvalInput(input)) + if err != nil { + return o.opaError(w, err) + } + if len(results) == 0 { + return o.opaError(w, errOpaNoResult) + } + result := results[0].Bindings["result"] + var allow, ok bool + if allow, ok = result.(bool); !ok { + return o.opaError(w, errOpaInvalidResultType) + } + if !allow { + w.SetStatusCode(o.spec.DefaultStatus) + return resultFiltered + } + return "" +} + +func (o *OPAFilter) opaError(resp *httpprot.Response, err error) string { + resp.Header().Set(opaErrorHeaderKey, "true") + resp.SetStatusCode(o.spec.DefaultStatus) + resp.SetPayload(err.Error()) + return resultFiltered +} diff --git a/pkg/filters/opafilter/opafilter_test.go b/pkg/filters/opafilter/opafilter_test.go new file mode 100644 index 0000000000..67f000ea03 --- /dev/null +++ b/pkg/filters/opafilter/opafilter_test.go @@ -0,0 +1,253 @@ +/* + * Copyright (c) 2017, MegaEase + * All rights reserved. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package opafilter + +import ( + "net/http" + "net/http/httptest" + "strings" + "testing" + + "github.com/stretchr/testify/assert" + + "github.com/megaease/easegress/pkg/context" + "github.com/megaease/easegress/pkg/filters" + "github.com/megaease/easegress/pkg/protocols/httpprot" + "github.com/megaease/easegress/pkg/supervisor" + "github.com/megaease/easegress/pkg/util/codectool" +) + +func setRequest(t *testing.T, ctx *context.Context, stdReq *http.Request) { + req, err := httpprot.NewRequest(stdReq) + assert.Nil(t, err) + ctx.SetInputRequest(req) +} + +func createOPAFilter(yamlConfig string, prev *OPAFilter, supervisor *supervisor.Supervisor) *OPAFilter { + rawSpec := make(map[string]interface{}) + codectool.MustUnmarshal([]byte(yamlConfig), &rawSpec) + spec, err := filters.NewSpec(supervisor, "", rawSpec) + if err != nil { + panic(err.Error()) + } + v := &OPAFilter{spec: spec.(*Spec)} + if prev == nil { + v.Init() + } else { + v.Inherit(prev) + } + return v +} + +type testCase struct { + req func() *http.Request + status int + shouldHandlerError bool + shouldRegoError bool + readBody bool + policy string + defaultStatus int + includedHeaders string +} + +func TestOpaPolicyInFilter(t *testing.T) { + testCases := map[string]testCase{ + "allow": { + policy: ` + package http + allow = true`, + status: 200, + }, + "deny": { + policy: ` + package http + allow = false`, + status: 403, + }, + "allow with path": { + policy: ` + package http + default allow = false + + allow { + input.request.path_parts[0] == "allowed" + } + `, + req: func() *http.Request { + return httptest.NewRequest(http.MethodGet, "https://example.com/allowed", nil) + }, + status: 200, + }, + "deny with path": { + policy: ` + package http + default allow = false + + allow { + input.request.path_parts[0] == "allowed" + } + `, + req: func() *http.Request { + return httptest.NewRequest(http.MethodGet, "https://example.com/forbidden", nil) + }, + status: 403, + }, + "allow when includedHeaders not configured": { + policy: ` + package http + default allow = true + + allow { + input.request.headers["x-bad-header"] == "1" + } + `, + req: func() *http.Request { + r := httptest.NewRequest(http.MethodGet, "https://example.com", nil) + r.Header.Add("x-bad-header", "1") + return r + }, + status: 200, + }, + "deny when includedHeaders configured": { + policy: ` + package http + default allow = true + + allow = { "status_code": 403 } { + input.request.headers["X-Bad-Header"] == "1" + } + `, + includedHeaders: "x-bad-header", + req: func() *http.Request { + r := httptest.NewRequest(http.MethodGet, "https://example.com", nil) + r.Header.Add("X-BAD-HEADER", "1") + return r + }, + status: 403, + }, + "err on bad allow type": { + policy: ` + package http + allow = 1`, + shouldRegoError: true, + }, + "err on bad package": { + policy: ` + package http.authz + allow = true`, + shouldRegoError: true, + }, + "status config": { + policy: ` + package http + allow = false`, + defaultStatus: 500, + status: 500, + }, + "body is not read by default": { + // `"readBody": "false"` is the default value + policy: ` + package http + default allow = false + allow { + input.request.body == "allow" + } + `, + req: func() *http.Request { + r := httptest.NewRequest(http.MethodGet, "https://example.com", strings.NewReader("allow")) + r.Header.Add("content-type", "text/plain; charset=utf8") + return r + }, + status: 403, + }, + "reject when multiple headers included with space": { + policy: ` + package http + default allow = false + allow { + input.request.headers["X-Jwt-Header"] + input.request.headers["X-My-Custom-Header"] + } + `, + includedHeaders: "x-my-custom-header, x-jwt-header", + req: func() *http.Request { + r := httptest.NewRequest(http.MethodGet, "https://example.com", nil) + r.Header.Add("x-jwt-header", "1") + r.Header.Add("x-bad-header", "2") + return r + }, + status: 403, + }, + } + + for name, tc := range testCases { + t.Run(name, func(t *testing.T) { + yamlConf := buildYamlConf(t, &tc) + opaFilter := createOPAFilter(yamlConf, nil, nil) + var r *http.Request + if tc.req != nil { + r = tc.req() + } else { + r = httptest.NewRequest(http.MethodGet, "https://example.com", nil) + } + + ctx := context.New(nil) + setRequest(t, ctx, r) + + result := opaFilter.Handle(ctx) + + httpResp, _ := ctx.GetOutputResponse().(*httpprot.Response) + stdResp := httpResp.Response + if tc.shouldRegoError { + assert.Equal(t, 403, stdResp.StatusCode) + assert.Equal(t, resultFiltered, result) + assert.Equal(t, "true", stdResp.Header.Get(opaErrorHeaderKey)) + return + } + assert.Equal(t, tc.status, stdResp.StatusCode) + + if tc.status == 200 { + assert.Equal(t, "", result) + } else { + assert.Equal(t, resultFiltered, result) + } + }) + } +} + +func buildYamlConf(t *testing.T, tc *testCase) string { + buf, err := codectool.MarshalYAML(struct { + Name string `yaml:"name"` + Kind string `yaml:"kind"` + Policy string `yaml:"policy"` + DefaultStatus int `yaml:"defaultStatus"` + IncludedHeaders string `yaml:"includedHeaders"` + ReadBody bool `yaml:"readBody"` + }{ + Name: "opaFilter", + Kind: "OPAFilter", + Policy: tc.policy, + DefaultStatus: tc.defaultStatus, + IncludedHeaders: tc.includedHeaders, + ReadBody: tc.readBody, + }) + if err != nil { + t.Error(err) + } + return string(buf) +} diff --git a/pkg/registry/registry.go b/pkg/registry/registry.go index baa2b2e570..b1f53d3f9e 100644 --- a/pkg/registry/registry.go +++ b/pkg/registry/registry.go @@ -32,6 +32,7 @@ import ( _ "github.com/megaease/easegress/pkg/filters/mock" _ "github.com/megaease/easegress/pkg/filters/mqttclientauth" _ "github.com/megaease/easegress/pkg/filters/oidcadaptor" + _ "github.com/megaease/easegress/pkg/filters/opafilter" _ "github.com/megaease/easegress/pkg/filters/proxy" _ "github.com/megaease/easegress/pkg/filters/ratelimiter" _ "github.com/megaease/easegress/pkg/filters/remotefilter"