From d9308aad4e82b9a150c4573c58a18a09ec97217f Mon Sep 17 00:00:00 2001 From: baerwang Date: Sun, 7 Jan 2024 21:39:37 +0800 Subject: [PATCH] feat: wasm support opa (Open Policy Agent) --- plugins/wasm-go/extensions/opa/go.mod | 53 ++++++++ plugins/wasm-go/extensions/opa/go.sum | 135 +++++++++++++++++++++ plugins/wasm-go/extensions/opa/main.go | 90 ++++++++++++++ plugins/wasm-go/extensions/opa/opa_test.go | 53 ++++++++ 4 files changed, 331 insertions(+) create mode 100644 plugins/wasm-go/extensions/opa/go.mod create mode 100644 plugins/wasm-go/extensions/opa/go.sum create mode 100644 plugins/wasm-go/extensions/opa/main.go create mode 100644 plugins/wasm-go/extensions/opa/opa_test.go diff --git a/plugins/wasm-go/extensions/opa/go.mod b/plugins/wasm-go/extensions/opa/go.mod new file mode 100644 index 0000000000..b508361d05 --- /dev/null +++ b/plugins/wasm-go/extensions/opa/go.mod @@ -0,0 +1,53 @@ +module github.com/alibaba/higress/plugins/wasm-go/extensions/opa + +go 1.19 + +require ( + github.com/alibaba/higress/plugins/wasm-go v0.0.0 + github.com/open-policy-agent/opa v0.60.0 + github.com/stretchr/testify v1.8.4 + github.com/tetratelabs/proxy-wasm-go-sdk v0.22.0 + github.com/tidwall/gjson v1.14.4 +) + +require ( + github.com/OneOfOne/xxhash v1.2.8 // indirect + github.com/agnivade/levenshtein v1.1.1 // indirect + github.com/beorn7/perks v1.0.1 // indirect + github.com/cespare/xxhash/v2 v2.2.0 // indirect + github.com/davecgh/go-spew v1.1.1 // indirect + github.com/go-ini/ini v1.67.0 // indirect + github.com/go-logr/logr v1.3.0 // indirect + github.com/go-logr/stdr v1.2.2 // indirect + github.com/gobwas/glob v0.2.3 // indirect + github.com/golang/protobuf v1.5.3 // indirect + github.com/google/uuid v1.5.0 // indirect + github.com/gorilla/mux v1.8.1 // indirect + github.com/higress-group/nottinygc v0.0.0-20231101025119-e93c4c2f8520 // indirect + github.com/magefile/mage v1.14.0 // indirect + github.com/matttproud/golang_protobuf_extensions v1.0.4 // indirect + github.com/pmezard/go-difflib v1.0.0 // indirect + github.com/prometheus/client_golang v1.16.0 // indirect + github.com/prometheus/client_model v0.3.0 // indirect + github.com/prometheus/common v0.42.0 // indirect + github.com/prometheus/procfs v0.10.1 // indirect + github.com/rcrowley/go-metrics v0.0.0-20200313005456-10cdbea86bc0 // indirect + github.com/sirupsen/logrus v1.9.3 // indirect + github.com/tchap/go-patricia/v2 v2.3.1 // indirect + github.com/tidwall/match v1.1.1 // indirect + github.com/tidwall/pretty v1.2.0 // indirect + github.com/xeipuuv/gojsonpointer v0.0.0-20190905194746-02993c407bfb // indirect + github.com/xeipuuv/gojsonreference v0.0.0-20180127040603-bd5ef7bd5415 // indirect + github.com/yashtewari/glob-intersection v0.2.0 // indirect + go.opentelemetry.io/otel v1.21.0 // indirect + go.opentelemetry.io/otel/metric v1.21.0 // indirect + go.opentelemetry.io/otel/sdk v1.21.0 // indirect + go.opentelemetry.io/otel/trace v1.21.0 // indirect + golang.org/x/sys v0.15.0 // indirect + google.golang.org/protobuf v1.31.0 // indirect + gopkg.in/yaml.v2 v2.4.0 // indirect + gopkg.in/yaml.v3 v3.0.1 // indirect + sigs.k8s.io/yaml v1.4.0 // indirect +) + +replace github.com/alibaba/higress/plugins/wasm-go => ../.. diff --git a/plugins/wasm-go/extensions/opa/go.sum b/plugins/wasm-go/extensions/opa/go.sum new file mode 100644 index 0000000000..3c77a46225 --- /dev/null +++ b/plugins/wasm-go/extensions/opa/go.sum @@ -0,0 +1,135 @@ +github.com/OneOfOne/xxhash v1.2.8 h1:31czK/TI9sNkxIKfaUfGlU47BAxQ0ztGgd9vPyqimf8= +github.com/OneOfOne/xxhash v1.2.8/go.mod h1:eZbhyaAYD41SGSSsnmcpxVoRiQ/MPUTjUdIIOT9Um7Q= +github.com/agnivade/levenshtein v1.1.1 h1:QY8M92nrzkmr798gCo3kmMyqXFzdQVpxLlGPRBij0P8= +github.com/agnivade/levenshtein v1.1.1/go.mod h1:veldBMzWxcCG2ZvUTKD2kJNRdCk5hVbJomOvKkmgYbo= +github.com/arbovm/levenshtein v0.0.0-20160628152529-48b4e1c0c4d0 h1:jfIu9sQUG6Ig+0+Ap1h4unLjW6YQJpKZVmUzxsD4E/Q= +github.com/arbovm/levenshtein v0.0.0-20160628152529-48b4e1c0c4d0/go.mod h1:t2tdKJDJF9BV14lnkjHmOQgcvEKgtqs5a1N3LNdJhGE= +github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM= +github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw= +github.com/bytecodealliance/wasmtime-go/v3 v3.0.2 h1:3uZCA/BLTIu+DqCfguByNMJa2HVHpXvjfy0Dy7g6fuA= +github.com/cenkalti/backoff/v4 v4.2.1 h1:y4OZtCnogmCPw98Zjyt5a6+QwPLGkiQsYW5oUqylYbM= +github.com/cespare/xxhash v1.1.0 h1:a6HrQnmkObjyL+Gs60czilIUGqrzKutQD6XZog3p+ko= +github.com/cespare/xxhash/v2 v2.2.0 h1:DC2CZ1Ep5Y4k3ZQ899DldepgrayRUGE6BBZ/cd9Cj44= +github.com/cespare/xxhash/v2 v2.2.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs= +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 v3.2103.5 h1:ylPa6qzbjYRQMU6jokoj4wzcaweHylt//CH0AKt0akg= +github.com/dgraph-io/ristretto v0.1.1 h1:6CWw5tJNgpegArSHpNHJKldNeq03FQCwYvfMVWajOK8= +github.com/dgryski/trifles v0.0.0-20200323201526-dd97f9abfb48 h1:fRzb/w+pyskVMQ+UbP35JkH8yB7MYb4q/qhBarqZE6g= +github.com/dgryski/trifles v0.0.0-20200323201526-dd97f9abfb48/go.mod h1:if7Fbed8SFyPtHLHbg49SI7NAdJiC5WIA09pe59rfAA= +github.com/dustin/go-humanize v1.0.0 h1:VSnTsYCnlFHaM2/igO1h6X3HA71jcobQuxemgkq4zYo= +github.com/felixge/httpsnoop v1.0.4 h1:NFTV2Zj1bL4mc9sqWACXbQFVBBg2W3GPvqp8/ESS2Wg= +github.com/fortytw2/leaktest v1.3.0 h1:u8491cBMTQ8ft8aeV+adlcytMZylmA5nnwwkRZjI8vw= +github.com/foxcpp/go-mockdns v1.0.0 h1:7jBqxd3WDWwi/6WhDvacvH1XsN3rOLXyHM1uhvIx6FI= +github.com/go-ini/ini v1.67.0 h1:z6ZrTEZqSWOTyH2FlglNbNgARyHG8oLW9gMELqKr06A= +github.com/go-ini/ini v1.67.0/go.mod h1:ByCAeIL28uOIIG0E3PJtZPDL8WnHpFKFOtgjp+3Ies8= +github.com/go-logr/logr v1.2.2/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A= +github.com/go-logr/logr v1.3.0 h1:2y3SDp0ZXuc6/cjLSZ+Q3ir+QB9T/iG5yYRXqsagWSY= +github.com/go-logr/logr v1.3.0/go.mod h1:9T104GzyrTigFIr8wt5mBrctHMim0Nb2HLGrmQ40KvY= +github.com/go-logr/stdr v1.2.2 h1:hSWxHoqTgW2S2qGc0LTAI563KZ5YKYRhT3MFKZMbjag= +github.com/go-logr/stdr v1.2.2/go.mod h1:mMo/vtBO5dYbehREoey6XUKy/eSumjCCveDpRre4VKE= +github.com/gobwas/glob v0.2.3 h1:A4xDbljILXROh+kObIiy5kIaPYD8e96x1tgBhUI5J+Y= +github.com/gobwas/glob v0.2.3/go.mod h1:d3Ez4x06l9bZtSvzIay5+Yzi0fmZzPgnTbPcKjJAkT8= +github.com/gogo/protobuf v1.3.2 h1:Ov1cvc58UF3b5XjBnZv7+opcTcQFZebYjWzi34vdm4Q= +github.com/golang/glog v1.1.2 h1:DVjP2PbBOzHyzA+dn3WhHIq4NdVu3Q+pvivFICf/7fo= +github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da h1:oI5xCqsCo564l8iNU+DwB5epxmsaqB+rhGL0m5jtYqE= +github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U= +github.com/golang/protobuf v1.3.5/go.mod h1:6O5/vntMXwX2lRkT1hjjk0nAC1IDOTvTlVgjlRvqsdk= +github.com/golang/protobuf v1.5.0/go.mod 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h1:JKfpVSCB84vrAmHzyrsxB5NAr5kLoMXZArPSw7Qlgyg= +github.com/open-policy-agent/opa v0.60.0 h1:ZPoPt4yeNs5UXCpd/P/btpSyR8CR0wfhVoh9BOwgJNs= +github.com/open-policy-agent/opa v0.60.0/go.mod h1:aD5IK6AiLNYBjNXn7E02++yC8l4Z+bRDvgM6Ss0bBzA= +github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4= +github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM= +github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4= +github.com/prometheus/client_golang v1.16.0 h1:yk/hx9hDbrGHovbci4BY+pRMfSuuat626eFsHb7tmT8= +github.com/prometheus/client_golang v1.16.0/go.mod h1:Zsulrv/L9oM40tJ7T815tM89lFEugiJ9HzIqaAx4LKc= +github.com/prometheus/client_model v0.3.0 h1:UBgGFHqYdG/TPFD1B1ogZywDqEkwp3fBMvqdiQ7Xew4= +github.com/prometheus/client_model v0.3.0/go.mod h1:LDGWKZIo7rky3hgvBe+caln+Dr3dPggB5dvjtD7w9+w= +github.com/prometheus/common v0.42.0 h1:EKsfXEYo4JpWMHH5cg+KOUWeuJSov1Id8zGR8eeI1YM= +github.com/prometheus/common 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h1:Mk1wCc2gy/F0THH0TAp1QYyJNzRm2KCLy3o5ASXVI5E= +sigs.k8s.io/yaml v1.4.0/go.mod h1:Ejl7/uTz7PSA4eKMyQCUTnhZYNmLIl+5c2lQPGR2BPY= diff --git a/plugins/wasm-go/extensions/opa/main.go b/plugins/wasm-go/extensions/opa/main.go new file mode 100644 index 0000000000..fd9907faa8 --- /dev/null +++ b/plugins/wasm-go/extensions/opa/main.go @@ -0,0 +1,90 @@ +package main + +import ( + "context" + "errors" + "net/http" + "strings" + + "github.com/alibaba/higress/plugins/wasm-go/pkg/wrapper" + "github.com/open-policy-agent/opa/rego" + "github.com/tetratelabs/proxy-wasm-go-sdk/proxywasm" + "github.com/tetratelabs/proxy-wasm-go-sdk/proxywasm/types" + "github.com/tidwall/gjson" +) + +func main() { + wrapper.SetCtx( + "opa", + wrapper.ParseConfigBy(parseConfig), + wrapper.ProcessRequestBodyBy(onHttpRequestBody), + ) +} + +type OpaConfig struct { + query string + filename string + module string +} + +func parseConfig(json gjson.Result, config *OpaConfig, log wrapper.Log) error { + log.Debug("parseConfig()") + + filename := json.Get("filename").String() + if strings.TrimSpace(filename) == "" { + return errors.New("filename not allow empty") + } + + module := json.Get("module").String() + if strings.TrimSpace(module) == "" { + return errors.New("module not allow empty") + } + + query := json.Get("query").String() + if strings.TrimSpace(query) == "" { + return errors.New("query not allow empty") + } + + _, err := rego.New( + rego.Query(config.query), + rego.Module(config.filename, config.module)). + PrepareForEval(context.Background()) + if err != nil { + return err + } + + config.filename = filename + config.module = module + config.query = query + + return nil +} + +func onHttpRequestBody(ctx wrapper.HttpContext, config OpaConfig, body []byte, log wrapper.Log) types.Action { + log.Debug("onHttpRequestBody()") + + pq, err := rego.New( + rego.Query(config.query), + rego.Module(config.filename, config.module), + rego.Input(body)). + PrepareForEval(context.Background()) + if err != nil { + log.Errorf("opa new fail %v", err) + _ = proxywasm.SendHttpResponse(http.StatusBadRequest, nil, []byte("opa new fail "+err.Error()), -1) + return types.ActionContinue + } + + result, err := pq.Eval(context.Background()) + if err != nil { + log.Errorf("opa eval fail %v", err) + _ = proxywasm.SendHttpResponse(http.StatusBadRequest, nil, []byte("opa eval fail "+err.Error()), -1) + return types.ActionContinue + } + + if len(result) == 0 || !result.Allowed() { + _ = proxywasm.SendHttpResponse(http.StatusUnauthorized, nil, []byte("opa eval result is empty or allowed func is false"), -1) + return types.ActionContinue + } + + return types.ActionContinue +} diff --git a/plugins/wasm-go/extensions/opa/opa_test.go b/plugins/wasm-go/extensions/opa/opa_test.go new file mode 100644 index 0000000000..3344923e53 --- /dev/null +++ b/plugins/wasm-go/extensions/opa/opa_test.go @@ -0,0 +1,53 @@ +package main + +import ( + "context" + "testing" + + "github.com/open-policy-agent/opa/rego" + "github.com/stretchr/testify/assert" +) + +func TestOpa(t *testing.T) { + mod := ` + package test + + import future.keywords.if + + default allow := false + + allow if { + input.x == 1 + } + ` + + tests := []struct { + query string + input interface{} + result bool + }{ + { + query: "data.test.allow", + input: map[string]interface{}{"x": 1}, + result: true, + }, + { + query: "data.test.allow", + input: map[string]interface{}{"x": 2}, + result: false, + }, + } + + for _, test := range tests { + pq, err := rego.New( + rego.Query(test.query), + rego.Module("test.rego", mod), + rego.Input(test.input)).PrepareForEval(context.Background()) + assert.NoError(t, err) + + result, err := pq.Eval(context.Background()) + assert.NoError(t, err) + assert.Equal(t, result.Allowed(), test.result) + } + +}