add tests and try making no libsodium version work properly

contrib/backends/srndv2/Makefile

@@ -10,3 +10,9 @@ pure:
 
 clean:
 	GOPATH=$(REPO) go clean -v
+
+test:
+	GOPATH=$(REPO) go test -v -tags libsodium srnd
+
+test-pure:
+	GOPATH=$(REPO) go test -v srnd

contrib/backends/srndv2/src/srnd/crypto_test.go

@@ -0,0 +1,44 @@
+package srnd
+
+import (
+	"bufio"
+	"io"
+	"io/ioutil"
+	"os"
+	"path/filepath"
+	"testing"
+)
+
+func TestVerify(t *testing.T) {
+	d := filepath.Join("testdata", "article.test.txt")
+
+	f, e := os.Open(d)
+	if e != nil {
+		t.Logf("os.Open returned error: %s", e)
+		t.Fail()
+		return
+	}
+
+	r := bufio.NewReader(f)
+
+	msg, er := readMIMEHeader(r)
+	if er != nil {
+		t.Logf("readMIMEHeader returned error: %s", er)
+		t.Fail()
+		return
+	}
+
+	b := &io.LimitedReader{
+		R: msg.Body,
+		N: 1000000000,
+	}
+
+	err := read_message_body(b, msg.Header, nil, ioutil.Discard, true, func(msg NNTPMessage) {
+		return
+	})
+	if err != nil {
+		t.Logf("read_message_body returned error: %s", err)
+		t.Fail()
+		return
+	}
+}

contrib/backends/srndv2/src/srnd/cryptography.go

@@ -3,27 +3,44 @@
 package srnd
 
 import (
+	"crypto/sha512"
 	"golang.org/x/crypto/curve25519"
+	"golang.org/x/crypto/ed25519"
 )
 
 func naclCryptoVerifyFucky(h, sig, pk []byte) bool {
-	return false
+	pub := make(ed25519.PublicKey, ed25519.PublicKeySize)
+	copy(pub, pk)
+	return ed25519.Verify(pub, h, sig)
 }
 
 func naclCryptoSignFucky(hash, sk []byte) []byte {
-	return nil
-}
-
-func naclCryptoVerifyDetached(hash, sig, pk []byte) bool {
-	return false
-}
-
-func naclCryptoSignDetached(hash, sk []byte) []byte {
-	return nil
+	sec := make(ed25519.PrivateKey, ed25519.PrivateKeySize)
+	copy(sec, sk)
+	return ed25519.Sign(sec, hash)
 }
 
 func naclSeedToKeyPair(seed []byte) (pk, sk []byte) {
+	h := sha512.Sum512(seed)
+	sk = h[:]
+	sk[0] &= 248
+	sk[31] &= 63
+	sk[31] |= 64
+
+	// scalarmult magick shit
+	pk = scalarBaseMult(sk)
+
+	copy(sk[0:32], seed[0:32])
+	copy(sk[32:64], pk[0:32])
+
 	return
 }
 
-var naclScalarBaseMult = curve25519.ScalarBaseMult
+func scalarBaseMult(sk []byte) (pk []byte) {
+	var skey [32]byte
+	var pkey [32]byte
+	copy(skey[0:32], sk[0:32])
+	curve25519.ScalarBaseMult(&pkey, &skey)
+	pk = pkey[0:32]
+	return
+}

contrib/backends/srndv2/src/srnd/message.go

@@ -502,7 +502,7 @@ func verifyMessageBLAKE2B(pk, sig string, body *io.LimitedReader, innerHandler f
 		hash := h.Sum(nil)
 		log.Printf("hash=%s", hexify(hash))
 		log.Printf("sig=%s", hexify(sig_bytes))
-		if naclCryptoVerifyDetached(hash, sig_bytes, pk_bytes) {
+		if naclCryptoVerifyFucky(hash, sig_bytes, pk_bytes) {
 			log.Println("signature is valid :^)")
 		} else {
 			err = errors.New("invalid signature")

contrib/backends/srndv2/src/srnd/sign_test.go

@@ -1,21 +0,0 @@
-package srnd
-
-import "testing"
-import "fmt"
-import "github.com/majestrate/nacl"
-
-func TestSignVerify(t *testing.T) {
-
-	msgid := "<asd@asd.asd>"
-	secret := "asdasdasd"
-	seed := parseTripcodeSecret(secret)
-	kp := nacl.LoadSignKey(seed)
-	defer kp.Free()
-	pubkey := hexify(kp.Public())
-	seckey := kp.Secret()
-	sig := msgidFrontendSign(seckey, msgid)
-	fmt.Println(sig, pubkey, msgid)
-	if !verifyFrontendSig(pubkey, sig, msgid) {
-		t.Fail()
-	}
-}

contrib/backends/srndv2/src/srnd/testdata/article.test.txt

@@ -0,0 +1,23 @@
+Subject: My moderation decision/perspective
+From: mgs <poster@web.oniichan.onion>
+X-Signature-Ed25519-SHA512: 6e0478722d0de3c0896e8aa7bd9bb1fa94ba6831faf0c54c4aa1d91a191382f85ae57833a6e00f1d4da53048df0e0cb8402df5f952948aa53fb5788ca9242f02
+X-Frontend-Pubkey: b1dcaa6ba60c1381a5823c3c61c995afeaead79896f95f9748da5fe1cf6ea43f
+Path: web.oniichan.onion
+Content-Type: message/rfc822; charset=UTF-8
+Newsgroups: overchan.moderation
+Message-ID: <b880c1483096181@web.oniichan.onion>
+Date: Fri, 30 Dec 2016 11:09:41 +0000
+X-PubKey-Ed25519: 9a659a2c761009374b510f2eb133cf7e67220f93c8912fd4668c601144823121
+X-Frontend-Signature: 11eb01c8a137e29f4e7a8b25a2cf38b5d913db9d4faaca5c5f8946b0e7f83d826bd3af6c9fc6a40c1091c09ad437b2b9d9aa41617c63a464e5b1833ed77fe202
+
+Path: web.oniichan.onion
+Content-Type: text/plain; charset=utf-8
+Newsgroups: overchan.moderation
+Subject: My moderation decision/perspective
+From: mgs <poster@web.oniichan.onion>
+Message-ID: <b880c1483096181@web.oniichan.onion>
+Date: Fri, 30 Dec 2016 11:09:41 +0000
+
+Like the subject says, I will update in this thread on decisions I made on ctl with briefs/explanations. Anyone is actually welcomed to comment, discuss, and opinionate here, but not spam. If anyone uses this very thread to spam, I will delete, the node owners will see it, and I will reply it here exactly saying so.
+
+Iow: please critique.