add COPYING and copyright lines

COPYING

@@ -0,0 +1,38 @@
+Copyright (c) 2020 The Zcash developers
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+
+
+The MIT software license (https://www.opensource.org/licenses/mit-license.php)
+above applies to the code directly included in this source distribution, with
+the exception of certain Autoconf macros. Dependencies downloaded as part of
+the build process may be covered by other open-source licenses. The MIT-licensed
+source code is not considered a derived work of these Autoconf macros or of the
+dependencies. For further details see 'contrib/debian/copyright'.
+
+
+This product includes software developed by the OpenSSL Project for use in the
+OpenSSL Toolkit (https://www.openssl.org/). This product includes cryptographic
+software written by Eric Young (eay@cryptsoft.com).
+
+
+Although almost all of the Zcash code is licensed under "permissive" open source
+licenses, users and distributors should note that when built using the default
+build options, Zcash depends on Oracle Berkeley DB 6.2.x, which is licensed
+under the GNU Affero General Public License.

Makefile

@@ -5,6 +5,10 @@
  #  Description:  Used for local and container dev in CI deployments
  #  Usage: make <target_name>
  #
+ #  Copyright (c) 2020 The Zcash developers
+ #  Distributed under the MIT software license, see the accompanying
+ #  file COPYING or https://www.opensource.org/licenses/mit-license.php .
+ #
  #  Known bugs/missing features:
  #  1. make msan is not stable as of 9/20/2019
  #

cmd/server/main.go

@@ -1,3 +1,6 @@
+// Copyright (c) 2019-2020 The Zcash developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or https://www.opensource.org/licenses/mit-license.php .
 package main
 
 import (

cmd/server/server_test.go

@@ -1,3 +1,6 @@
+// Copyright (c) 2019-2020 The Zcash developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or https://www.opensource.org/licenses/mit-license.php .
 package main
 
 import (

common/cache.go

@@ -1,3 +1,6 @@
+// Copyright (c) 2019-2020 The Zcash developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or https://www.opensource.org/licenses/mit-license.php .
 package common
 
 import (

common/cache_test.go

@@ -1,3 +1,6 @@
+// Copyright (c) 2019-2020 The Zcash developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or https://www.opensource.org/licenses/mit-license.php .
 package common
 
 import (

common/common.go

@@ -1,3 +1,6 @@
+// Copyright (c) 2019-2020 The Zcash developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or https://www.opensource.org/licenses/mit-license.php .
 package common
 
 import (

common/common_test.go

@@ -1,3 +1,6 @@
+// Copyright (c) 2019-2020 The Zcash developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or https://www.opensource.org/licenses/mit-license.php .
 package common
 
 import (

common/generatecerts.go

@@ -1,3 +1,6 @@
+// Copyright (c) 2019-2020 The Zcash developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or https://www.opensource.org/licenses/mit-license.php .
 package common
 
 import (

frontend/frontend_test.go

@@ -1,3 +1,6 @@
+// Copyright (c) 2019-2020 The Zcash developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or https://www.opensource.org/licenses/mit-license.php .
 package frontend
 
 import (

frontend/rpc_client.go

@@ -1,3 +1,6 @@
+// Copyright (c) 2019-2020 The Zcash developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or https://www.opensource.org/licenses/mit-license.php .
 package frontend
 
 import (

frontend/service.go

@@ -1,3 +1,8 @@
+// Copyright (c) 2019-2020 The Zcash developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or https://www.opensource.org/licenses/mit-license.php .
+
+// Package frontend implements the gRPC handlers called by the wallets.
 package frontend
 
 import (

parser/block.go

@@ -1,3 +1,6 @@
+// Copyright (c) 2019-2020 The Zcash developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or https://www.opensource.org/licenses/mit-license.php .
 package parser
 
 import (

parser/block_header.go

@@ -1,3 +1,6 @@
+// Copyright (c) 2019-2020 The Zcash developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or https://www.opensource.org/licenses/mit-license.php .
 package parser
 
 import (

parser/block_header_test.go

@@ -1,3 +1,6 @@
+// Copyright (c) 2019-2020 The Zcash developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or https://www.opensource.org/licenses/mit-license.php .
 package parser
 
 import (

parser/block_test.go

@@ -1,3 +1,6 @@
+// Copyright (c) 2019-2020 The Zcash developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or https://www.opensource.org/licenses/mit-license.php .
 package parser
 
 import (

parser/fuzz.go

@@ -1,3 +1,6 @@
+// Copyright (c) 2019-2020 The Zcash developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or https://www.opensource.org/licenses/mit-license.php .
 // +build gofuzz
 
 package parser

parser/internal/bytestring/bytestring.go

@@ -1,3 +1,7 @@
+// Copyright (c) 2019-2020 The Zcash developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or https://www.opensource.org/licenses/mit-license.php .
+
 // Package bytestring provides a cryptobyte-inspired API specialized to the
 // needs of parsing Zcash transactions.
 package bytestring

parser/internal/bytestring/bytestring_test.go

@@ -1,3 +1,6 @@
+// Copyright (c) 2019-2020 The Zcash developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or https://www.opensource.org/licenses/mit-license.php .
 package bytestring
 
 import (

parser/transaction.go

@@ -1,3 +1,6 @@
+// Copyright (c) 2019-2020 The Zcash developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or https://www.opensource.org/licenses/mit-license.php .
 package parser
 
 import (

parser/transaction_test.go

@@ -1,3 +1,6 @@
+// Copyright (c) 2019-2020 The Zcash developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or https://www.opensource.org/licenses/mit-license.php .
 package parser
 
 import (

walletrpc/compact_formats.proto

@@ -1,3 +1,7 @@
+// Copyright (c) 2019-2020 The Zcash developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or https://www.opensource.org/licenses/mit-license.php .
+
 syntax = "proto3";
 package cash.z.wallet.sdk.rpc;
 option go_package = "walletrpc";

walletrpc/generate.go

@@ -1,3 +1,6 @@
+// Copyright (c) 2019-2020 The Zcash developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or https://www.opensource.org/licenses/mit-license.php .
 package walletrpc
 
 //go:generate protoc -I . ./compact_formats.proto --go_out=plugins=grpc:.

walletrpc/service.proto

@@ -1,3 +1,7 @@
+// Copyright (c) 2019-2020 The Zcash developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or https://www.opensource.org/licenses/mit-license.php .
+
 syntax = "proto3";
 package cash.z.wallet.sdk.rpc;
 option go_package = "walletrpc";

walletrpc/walletrpc_test.go

@@ -1,3 +1,6 @@
+// Copyright (c) 2019-2020 The Zcash developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or https://www.opensource.org/licenses/mit-license.php .
 package walletrpc
 
 import (