1 files changed, 44 insertions, 0 deletions

diff --git a/app/src/main/java/org/pacien/tincapp/utils/TincKeyring.kt b/app/src/main/java/org/pacien/tincapp/utils/TincKeyring.kt
new file mode 100644
index 0000000..bae38ac
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+++ b/app/src/main/java/org/pacien/tincapp/utils/TincKeyring.kt
@@ -0,0 +1,44 @@
+/*
+ * Tinc App, an Android binding and user interface for the tinc mesh VPN daemon
+ * Copyright (C) 2017-2018 Pacien TRAN-GIRARD
+ *
+ * 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 <https://www.gnu.org/licenses/>.
+ */
+
+package org.pacien.tincapp.utils
+
+import android.os.ParcelFileDescriptor
+import org.pacien.tincapp.commands.TincApp
+import java.io.File
+import java.io.FileNotFoundException
+
+/**
+ * @author pacien
+ */
+object TincKeyring {
+  fun needsPassphrase(netName: String) = try {
+    TincApp.listPrivateKeys(netName).filter { it.exists() }.any { PemUtils.isEncrypted(PemUtils.read(it)) }
+  } catch (e: FileNotFoundException) {
+    false
+  }
+
+  fun openPrivateKey(f: File?, passphrase: String?): ParcelFileDescriptor? {
+    if (f == null || !f.exists() || passphrase == null) return null
+    val pipe = ParcelFileDescriptor.createPipe()
+    val decryptedKey = PemUtils.decrypt(PemUtils.read(f), passphrase)
+    val outputStream = ParcelFileDescriptor.AutoCloseOutputStream(pipe[1])
+    PemUtils.write(decryptedKey, outputStream.writer())
+    return pipe[0]
+  }
+}