[vala-extra-vapis: 5/5] Add partial libsodium bindings.

[Evan Nemerson <evann src gnome org>]

commit df89bed4a97bc6b240b072e8699594034a07bea0
Author: Evan Nemerson <evan nemerson com>
Date:   Sat Sep 15 19:28:21 2018 -0700

    Add partial libsodium bindings.
    
    This is just the bits I needed for something a while back, but maybe
    it's enough to get someone else started on something more complete.

 libsodium.vapi | 49 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 49 insertions(+)
---
diff --git a/libsodium.vapi b/libsodium.vapi
new file mode 100644
index 0000000..7e0b7eb
--- /dev/null
+++ b/libsodium.vapi
@@ -0,0 +1,49 @@
+/* libsodium Vala Bindings
+ * Copyright 2016 Evan Nemerson <evan nemerson com>
+ *
+ * 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.
+ */
+
+/* This is *very* incomplete. */
+
+[CCode (cheader_filename = "sodium.h", lower_case_cprefix = "sodium_")]
+namespace Sodium {
+  [CCode (lower_case_cprefix = "randombytes_")]
+  namespace Random {
+    [CCode (cname = "randombytes_random")]
+    public static uint32 random (uint32 upper_bound = 0xffffffff);
+    public static void buffer (uint8[] buf);
+    public static int close ();
+    public static int stir ();
+  }
+
+  namespace Sign {
+    [CCode (cname = "crypto_sign_PUBLICKEYBYTES")]
+    public static size_t PUBLIC_KEY_BYTES;
+    [CCode (cname = "crypto_sign_SECRETKEYBYTES")]
+    public static size_t SECRET_KEY_BYTES;
+
+    [CCode (cname = "crypto_sign_keypair")]
+    public static int key_pair (uint8[Sodium.Sign.PUBLIC_KEY_BYTES] public_key, 
uint8[Sodium.Sign.SECRET_KEY_BYTES] secret_key);
+  }
+
+  public static int init ();
+}