X-Git-Url: http://www.git.cypherpunks.ru/?a=blobdiff_plain;f=src%2Fcypherpunks.ru%2Fgovpn%2Fegd.go;fp=src%2Fcypherpunks.ru%2Fgovpn%2Fegd.go;h=04ec87b9678cf2dfa10c576c84bfc66bbe4ef493;hb=cecb63f12f4a9f523276a0c19c7feb7437c7f53a;hp=0000000000000000000000000000000000000000;hpb=5123d4cd2b5cfbbba1112710ce29d3d85a3b3ef9;p=govpn.git

diff --git a/src/cypherpunks.ru/govpn/egd.go b/src/cypherpunks.ru/govpn/egd.go
new file mode 100644
index 0000000..04ec87b
--- /dev/null
+++ b/src/cypherpunks.ru/govpn/egd.go
@@ -0,0 +1,56 @@
+/*
+GoVPN -- simple secure free software virtual private network daemon
+Copyright (C) 2014-2016 Sergey Matveev <stargrave@stargrave.org>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU 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 General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+package govpn
+
+import (
+	"crypto/rand"
+	"errors"
+	"io"
+	"net"
+)
+
+var (
+	Rand io.Reader = rand.Reader
+)
+
+type EGDRand string
+
+// Read n bytes from EGD, blocking mode.
+func (egdPath EGDRand) Read(b []byte) (int, error) {
+	conn, err := net.Dial("unix", string(egdPath))
+	if err != nil {
+		return 0, err
+	}
+	conn.Write([]byte{0x02, byte(len(b))})
+	read, err := conn.Read(b)
+	if err != nil {
+		conn.Close()
+		return read, err
+	}
+	if read != len(b) {
+		conn.Close()
+		return read, errors.New("Got less bytes than expected from EGD")
+	}
+	conn.Close()
+	return read, nil
+}
+
+func EGDInit(path string) {
+	Rand = EGDRand(path)
+}