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extargs: add ".inf" external args for arbitrary Infura args

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This commit is contained in:
Michael Muré
2025-01-16 13:36:18 +01:00
committed by Michael Muré
parent 09c8815755
commit 3b6d70f47a
5 changed files with 236 additions and 14 deletions
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23
toolkit/server/exectx/ucanctx.go
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@@ -8,6 +8,7 @@ import (
"github.com/INFURA/go-ethlibs/jsonrpc"
"github.com/ipfs/go-cid"
"github.com/ipld/go-ipld-prime/datamodel"
"github.com/ucan-wg/go-ucan/pkg/args"
"github.com/ucan-wg/go-ucan/pkg/command"
"github.com/ucan-wg/go-ucan/pkg/container"
@@ -34,6 +35,7 @@ type UcanCtx struct {
// argument sources
http *extargs.HttpExtArgs
jsonrpc *extargs.JsonRpcExtArgs
infura *extargs.InfuraExtArgs
}
func FromContainer(cont container.Reader) (*UcanCtx, error) {
@@ -99,6 +101,7 @@ func (ctn UcanCtx) Meta() meta.ReadOnly {
}
// VerifyHttp verify the delegation's policies against arguments constructed from the HTTP request.
// These arguments will be set in the `.http` argument key, at the root.
// This function can only be called once per context.
// After being used, those constructed arguments will be used in ExecutionAllowed as well.
func (ctn UcanCtx) VerifyHttp(req *http.Request) error {
@@ -110,6 +113,7 @@ func (ctn UcanCtx) VerifyHttp(req *http.Request) error {
}
// VerifyJsonRpc verify the delegation's policies against arguments constructed from the JsonRpc request.
// These arguments will be set in the `.jsonrpc` argument key, at the root.
// This function can only be called once per context.
// After being used, those constructed arguments will be used in ExecutionAllowed as well.
func (ctn UcanCtx) VerifyJsonRpc(req *jsonrpc.Request) error {
@@ -120,6 +124,18 @@ func (ctn UcanCtx) VerifyJsonRpc(req *jsonrpc.Request) error {
return ctn.jsonrpc.Verify()
}
// VerifyInfura verify the delegation's policies against arbitrary arguments provider through an IPLD MapAssembler.
// These arguments will be set in the `.inf` argument key, at the root.
// This function can only be called once per context.
// After being used, those constructed arguments will be used in ExecutionAllowed as well.
func (ctn UcanCtx) VerifyInfura(assembler func(ma datamodel.MapAssembler)) error {
if ctn.infura != nil {
panic("only use once per request context")
}
ctn.infura = extargs.NewInfuraExtArgs(ctn.policies, assembler)
return ctn.infura.Verify()
}
// ExecutionAllowed does the final verification of the invocation.
// If VerifyHttp or VerifyJsonRpc has been used, those arguments are part of the verification.
func (ctn UcanCtx) ExecutionAllowed() error {
@@ -140,6 +156,13 @@ func (ctn UcanCtx) ExecutionAllowed() error {
}
newArgs.Include(jsonRpcArgs)
}
if ctn.infura != nil {
infuraArgs, err := ctn.infura.Args()
if err != nil {
return nil, err
}
newArgs.Include(infuraArgs)
}
return newArgs, nil
})