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* refact: add permssion check 1. go-jsonrpc support field reflect 2. go-ipfs-cmds support auth check in hanlder 3. venus client support dynamically specifies whether to expose to external calls 4. venus client code can generate by tools
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,71 @@ | ||
| package funcrule | ||
|
|
||
| import ( | ||
| "context" | ||
| "github.com/filecoin-project/go-jsonrpc/auth" | ||
| "golang.org/x/xerrors" | ||
| "reflect" | ||
| ) | ||
|
|
||
| type MethodName = string | ||
|
|
||
| // Rule[perm:admin,ignore:true] | ||
| // Used by Client to generate rule comments | ||
| type Rule struct { | ||
| Perm auth.Permission | ||
| Ignore bool | ||
| } | ||
|
|
||
| var AllPermissions = []auth.Permission{"read", "write", "sign", "admin"} | ||
| var defaultPerms = []auth.Permission{"read"} | ||
|
|
||
| func defaultRule() *Rule { | ||
| return &Rule{ | ||
| Perm: "read", | ||
| } | ||
| } | ||
|
|
||
| //permissionVerify the scheduler between API and internal business | ||
| func PermissionProxy(in interface{}, out interface{}) { | ||
| ra := reflect.ValueOf(in) | ||
| rint := reflect.ValueOf(out).Elem() | ||
| for i := 0; i < ra.NumMethod(); i++ { | ||
| methodName := ra.Type().Method(i).Name | ||
| field, exists := rint.Type().FieldByName(methodName) | ||
| if !exists { | ||
| //log.Printf("exclude method %s from fullNode", methodName) | ||
| continue | ||
| } | ||
|
|
||
| requiredPerm := field.Tag.Get("perm") | ||
| if requiredPerm == "" { | ||
| panic("missing 'perm' tag on " + field.Name) // ok | ||
| } | ||
| curule := defaultRule() | ||
| curule.Perm = requiredPerm | ||
|
|
||
| fn := ra.Method(i) | ||
| rint.FieldByName(methodName).Set(reflect.MakeFunc(field.Type, func(args []reflect.Value) (results []reflect.Value) { | ||
| ctx := args[0].Interface().(context.Context) | ||
| errNum := 0 | ||
| if !auth.HasPerm(ctx, defaultPerms, curule.Perm) { | ||
| errNum++ | ||
| goto ABORT | ||
| } | ||
| return fn.Call(args) | ||
| ABORT: | ||
| err := xerrors.Errorf("missing permission to invoke '%s'", methodName) | ||
| if errNum&1 == 1 { | ||
| err = xerrors.Errorf("%s (need '%s')", err, curule.Perm) | ||
| } | ||
| rerr := reflect.ValueOf(&err).Elem() | ||
| if fn.Type().NumOut() == 2 { | ||
| return []reflect.Value{ | ||
| reflect.Zero(fn.Type().Out(0)), | ||
| rerr, | ||
| } | ||
| } | ||
| return []reflect.Value{rerr} | ||
| })) | ||
| } | ||
| } |
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