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// Copyright 2015 The go-ethereum Authors
// This file is part of go-ethereum.
//
// go-ethereum is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// go-ethereum is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
package api
import (
"encoding/json"
"fmt"
"math/big"
"github.com/ethereum/go-ethereum/rpc/shared"
)
type WhisperMessageArgs struct {
Payload string
To string
From string
Topics []string
Priority uint32
Ttl uint32
}
func (args *WhisperMessageArgs) UnmarshalJSON(b []byte) (err error) {
var obj []struct {
Payload string
To string
From string
Topics []string
Priority interface{}
Ttl interface{}
}
if err = json.Unmarshal(b, &obj); err != nil {
return shared.NewDecodeParamError(err.Error())
}
if len(obj) < 1 {
return shared.NewInsufficientParamsError(len(obj), 1)
}
args.Payload = obj[0].Payload
args.To = obj[0].To
args.From = obj[0].From
args.Topics = obj[0].Topics
var num *big.Int
if num, err = numString(obj[0].Priority); err != nil {
return err
}
args.Priority = uint32(num.Int64())
if num, err = numString(obj[0].Ttl); err != nil {
return err
}
args.Ttl = uint32(num.Int64())
return nil
}
type WhisperIdentityArgs struct {
Identity string
}
func (args *WhisperIdentityArgs) UnmarshalJSON(b []byte) (err error) {
var obj []interface{}
if err := json.Unmarshal(b, &obj); err != nil {
return shared.NewDecodeParamError(err.Error())
}
if len(obj) < 1 {
return shared.NewInsufficientParamsError(len(obj), 1)
}
argstr, ok := obj[0].(string)
if !ok {
return shared.NewInvalidTypeError("arg0", "not a string")
}
args.Identity = argstr
return nil
}
type WhisperFilterArgs struct {
To string
From string
Topics [][]string
}
// UnmarshalJSON implements the json.Unmarshaler interface, invoked to convert a
// JSON message blob into a WhisperFilterArgs structure.
func (args *WhisperFilterArgs) UnmarshalJSON(b []byte) (err error) {
// Unmarshal the JSON message and sanity check
var obj []struct {
To interface{} `json:"to"`
From interface{} `json:"from"`
Topics interface{} `json:"topics"`
}
if err := json.Unmarshal(b, &obj); err != nil {
return shared.NewDecodeParamError(err.Error())
}
if len(obj) < 1 {
return shared.NewInsufficientParamsError(len(obj), 1)
}
// Retrieve the simple data contents of the filter arguments
if obj[0].To == nil {
args.To = ""
} else {
argstr, ok := obj[0].To.(string)
if !ok {
return shared.NewInvalidTypeError("to", "is not a string")
}
args.To = argstr
}
if obj[0].From == nil {
args.From = ""
} else {
argstr, ok := obj[0].From.(string)
if !ok {
return shared.NewInvalidTypeError("from", "is not a string")
}
args.From = argstr
}
// Construct the nested topic array
if obj[0].Topics != nil {
// Make sure we have an actual topic array
list, ok := obj[0].Topics.([]interface{})
if !ok {
return shared.NewInvalidTypeError("topics", "is not an array")
}
// Iterate over each topic and handle nil, string or array
topics := make([][]string, len(list))
for idx, field := range list {
switch value := field.(type) {
case nil:
topics[idx] = []string{}
case string:
topics[idx] = []string{value}
case []interface{}:
topics[idx] = make([]string, len(value))
for i, nested := range value {
switch value := nested.(type) {
case nil:
topics[idx][i] = ""
case string:
topics[idx][i] = value
default:
return shared.NewInvalidTypeError(fmt.Sprintf("topic[%d][%d]", idx, i), "is not a string")
}
}
default:
return shared.NewInvalidTypeError(fmt.Sprintf("topic[%d]", idx), "not a string or array")
}
}
args.Topics = topics
}
return nil
}
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