Merge pull request #102 from Jeiwan/get_raw_abi

 Add support for 'chain/get_raw_abi' API endpoint

api.go

@@ -513,6 +513,11 @@ func (api *API) GetTableRows(params GetTableRowsRequest) (out *GetTableRowsResp,
 	return
 }
 
+func (api *API) GetRawABI(params GetRawABIRequest) (out *GetRawABIResp, err error) {
+	err = api.call("chain", "get_raw_abi", params, &out)
+	return
+}
+
 func (api *API) GetRequiredKeys(tx *Transaction) (out *GetRequiredKeysResp, err error) {
 	keys, err := api.Signer.AvailableKeys()
 	if err != nil {

responses.go

@@ -267,6 +267,18 @@ type Currency struct {
 	Name      CurrencyName
 }
 
+type GetRawABIRequest struct {
+	AccountName string      `json:"account_name"`
+	ABIHash     Checksum256 `json:"abi_hash,omitempty"`
+}
+
+type GetRawABIResp struct {
+	AccountName string      `json:"account_name"`
+	CodeHash    Checksum256 `json:"code_hash"`
+	ABIHash     Checksum256 `json:"abi_hash"`
+	ABI         Blob        `json:"abi"`
+}
+
 type GetRequiredKeysResp struct {
 	RequiredKeys []ecc.PublicKey `json:"required_keys"`
 }

types.go

@@ -1,6 +1,7 @@
 package eos
 
 import (
+	"encoding/base64"
 	"encoding/binary"
 	"encoding/hex"
 	"encoding/json"
@@ -797,3 +798,19 @@ func (i *Uint128) UnmarshalJSON(data []byte) error {
 
 	return nil
 }
+
+// Blob
+
+// Blob is base64 encoded data
+// https://github.com/EOSIO/fc/blob/0e74738e938c2fe0f36c5238dbc549665ddaef82/include/fc/variant.hpp#L47
+type Blob string
+
+// Data returns decoded base64 data
+func (b Blob) Data() ([]byte, error) {
+	return base64.StdEncoding.DecodeString(string(b))
+}
+
+// String returns the blob as a string
+func (b Blob) String() string {
+	return string(b)
+}

types_test.go

@@ -517,3 +517,24 @@ func EqualNoDiff(t *testing.T, expected interface{}, actual interface{}, message
 
 	return true
 }
+
+func TestBlob(t *testing.T) {
+	b := Blob("RU9TIEdv")
+
+	t.Run("String", func(tt *testing.T) {
+		assert.Equal(tt, "RU9TIEdv", b.String())
+	})
+
+	t.Run("Data", func(tt *testing.T) {
+		data, err := b.Data()
+		require.Nil(tt, err)
+		assert.Equal(tt, []byte("EOS Go"), data)
+	})
+
+	t.Run("malformed data", func(tt *testing.T) {
+		b := Blob("not base64")
+		data, err := b.Data()
+		require.Equal(tt, "illegal base64 data at input byte 3", err.Error())
+		assert.Empty(tt, data)
+	})
+}