Enable SCTP in libjingle.

third_party/usrsctp/overrides/usrsctplib/netinet/sctp_nss_sha1.c

+/*-
+ * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved.
+ * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved.
+ * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * a) Redistributions of source code must retain the above copyright notice,
+ *   this list of conditions and the following disclaimer.
+ *
+ * b) Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *   the documentation and/or other materials provided with the distribution.
+ *
+ * c) Neither the name of Cisco Systems, Inc. nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifdef __FreeBSD__
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+#endif
+
+#ifdef SCTP_USE_NSS_SHA1
+#include <netinet/sctp_nss_sha1.h>
+
+void
+SCTP_NSS_SHA1_Init(struct sha1_context *ctx)
+{
+        ctx->pk11_ctx = PK11_CreateDigestContext(SEC_OID_SHA1);
+        PK11_DigestBegin(ctx->pk11_ctx);
+}
+
+void
+SCTP_NSS_SHA1_Update(struct sha1_context *ctx, const unsigned char *ptr, int siz)
+{
+        PK11_DigestOp(ctx->pk11_ctx, ptr, siz);
+}
+
+void
+SCTP_NSS_SHA1_Final(unsigned char *digest, struct sha1_context *ctx)
+{
+        unsigned int output_len = 0;
+        PK11_DigestFinal(ctx->pk11_ctx, digest, &output_len, sizeof(digest));
+        PK11_DestroyContext(ctx->pk11_ctx, PR_TRUE);
+}
+#endif