Add methods for DTLS/SRTP key handshake

1 files changed, 54 insertions, 0 deletions

diff --git a/openssl/src/srtp.rs b/openssl/src/srtp.rs
new file mode 100644
index 00000000..136ddbd2
--- /dev/null
+++ b/openssl/src/srtp.rs
@@ -0,0 +1,54 @@
+use ffi;
+use foreign_types::ForeignTypeRef;
+use libc::c_ulong;
+use stack::Stackable;
+use std::ffi::CStr;
+use std::str;
+
+#[allow(unused_unsafe)]
+foreign_type_and_impl_send_sync! {
+    type CType = ffi::SRTP_PROTECTION_PROFILE;
+    fn drop = ffi::SRTP_PROTECTION_PROFILE_free;
+
+    pub struct SrtpProtectionProfile;
+    /// Reference to `SrtpProtectionProfile`.
+    pub struct SrtpProtectionProfileRef;
+}
+
+impl Stackable for SrtpProtectionProfile {
+    type StackType = ffi::stack_st_SRTP_PROTECTION_PROFILE;
+}
+
+
+impl SrtpProtectionProfileRef {
+    pub fn id(&self) -> SrtpProfileId {
+        SrtpProfileId::from_raw(unsafe { (*self.as_ptr()).id })
+    }
+    pub fn name(&self) -> &'static str {
+        unsafe { CStr::from_ptr((*self.as_ptr()).name as *const _) }.to_str().expect("should be UTF-8")
+    }
+}
+
+
+/// type of SRTP profile to use.
+#[derive(Debug, Copy, Clone, PartialEq, Eq)]
+pub struct SrtpProfileId(c_ulong);
+
+impl SrtpProfileId {
+    /// Creates a `SrtpProfileId` from an integer representation.
+    pub fn from_raw(value: c_ulong) -> SrtpProfileId {
+        SrtpProfileId(value)
+    }
+
+    /// Returns the integer representation of `SrtpProfileId`.
+    pub fn as_raw(&self) -> c_ulong {
+        self.0
+    }
+
+    pub const SRTP_AES128_CM_SHA1_80: SrtpProfileId = SrtpProfileId(ffi::SRTP_AES128_CM_SHA1_80);
+    pub const SRTP_AES128_CM_SHA1_32: SrtpProfileId = SrtpProfileId(ffi::SRTP_AES128_CM_SHA1_32);
+    pub const SRTP_AES128_F8_SHA1_80: SrtpProfileId = SrtpProfileId(ffi::SRTP_AES128_F8_SHA1_80);
+    pub const SRTP_AES128_F8_SHA1_32: SrtpProfileId = SrtpProfileId(ffi::SRTP_AES128_F8_SHA1_32);
+    pub const SRTP_NULL_SHA1_80: SrtpProfileId = SrtpProfileId(ffi::SRTP_NULL_SHA1_80);
+    pub const SRTP_NULL_SHA1_32: SrtpProfileId = SrtpProfileId(ffi::SRTP_NULL_SHA1_32);
+}