Add build tags for disabling crypto independently of cgo

.gitignore

@@ -7,3 +7,5 @@
 *.json
 *.db
 *.log
+
+/mautrix-whatsapp

crypto.go

@@ -14,7 +14,7 @@
 // You should have received a copy of the GNU Affero General Public License
 // along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
-// +build cgo
+// +build cgo,!nocrypto
 
 package main
 
@@ -29,10 +29,11 @@ import (
 	"maunium.net/go/maulogger/v2"
 
 	"maunium.net/go/mautrix"
-	"maunium.net/go/mautrix-whatsapp/database"
 	"maunium.net/go/mautrix/crypto"
 	"maunium.net/go/mautrix/event"
 	"maunium.net/go/mautrix/id"
+
+	"maunium.net/go/mautrix-whatsapp/database"
 )
 
 var levelTrace = maulogger.Level{

database/cryptostore.go

@@ -14,7 +14,7 @@
 // You should have received a copy of the GNU Affero General Public License
 // along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
-// +build cgo
+// +build cgo,!nocrypto
 
 package database
 

go.mod

@@ -16,7 +16,7 @@ require (
 	gopkg.in/yaml.v2 v2.3.0
 	maunium.net/go/mauflag v1.0.0
 	maunium.net/go/maulogger/v2 v2.1.1
-	maunium.net/go/mautrix v0.7.0-rc.2
+	maunium.net/go/mautrix v0.7.0-rc.3
 )
 
 replace github.com/Rhymen/go-whatsapp => github.com/tulir/go-whatsapp v0.3.7

go.sum

@@ -128,6 +128,7 @@ golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACk
 golang.org/x/crypto v0.0.0-20200604202706-70a84ac30bf9 h1:vEg9joUBmeBcK9iSJftGNf3coIG4HqZElCPehJsfAYM=
 golang.org/x/crypto v0.0.0-20200604202706-70a84ac30bf9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
+golang.org/x/image v0.0.0-20200618115811-c13761719519 h1:1e2ufUJNM3lCHEY5jIgac/7UTjd6cgJNdatjPdFWf34=
 golang.org/x/image v0.0.0-20200618115811-c13761719519/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0=
 golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
 golang.org/x/lint v0.0.0-20190227174305-5b3e6a55c961/go.mod h1:wehouNa3lNwaWXcvxsM5YxQ5yQlVC4a0KAMCusXpPoU=
@@ -216,3 +217,5 @@ maunium.net/go/mautrix v0.6.1 h1:OFxAEnjEtkstE5J3RLv+vVrUORY6UTXV8pD/qWRBTPI=
 maunium.net/go/mautrix v0.6.1/go.mod h1:Va/74MijqaS0DQ3aUqxmFO54/PMfr1LVsCOcGRHbYmo=
 maunium.net/go/mautrix v0.7.0-rc.2 h1:139raRbbLft9i+g0zGVOT8rrHKRQmeo0SsZnFpZDEXE=
 maunium.net/go/mautrix v0.7.0-rc.2/go.mod h1:Va/74MijqaS0DQ3aUqxmFO54/PMfr1LVsCOcGRHbYmo=
+maunium.net/go/mautrix v0.7.0-rc.3 h1:GVmrVvY5vDASMyZ2xJ9kNynWsgqKl1yerKP7c6RsM7o=
+maunium.net/go/mautrix v0.7.0-rc.3/go.mod h1:Va/74MijqaS0DQ3aUqxmFO54/PMfr1LVsCOcGRHbYmo=

no-cgo.go

@@ -1,19 +1,3 @@
-// mautrix-whatsapp - A Matrix-WhatsApp puppeting bridge.
-// Copyright (C) 2020 Tulir Asokan
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// This program 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 Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
 // +build !cgo
 
 package main
@@ -25,14 +9,6 @@ import (
 	"golang.org/x/image/webp"
 )
 
-func NewCryptoHelper(bridge *Bridge) Crypto {
-	if !bridge.Config.Bridge.Encryption.Allow {
-		bridge.Log.Warnln("Bridge built without end-to-bridge encryption, but encryption is enabled in config")
-	}
-	bridge.Log.Debugln("Bridge built without end-to-bridge encryption")
-	return nil
-}
-
 func decodeWebp(r io.Reader) (image.Image, error) {
 	return webp.Decode(r)
 }

no-crypto.go

@@ -0,0 +1,11 @@
+// +build !cgo nocrypto
+
+package main
+
+func NewCryptoHelper(bridge *Bridge) Crypto {
+	if !bridge.Config.Bridge.Encryption.Allow {
+		bridge.Log.Warnln("Bridge built without end-to-bridge encryption, but encryption is enabled in config")
+	}
+	bridge.Log.Debugln("Bridge built without end-to-bridge encryption")
+	return nil
+}