Rearrange moonshot to have libeap as a subproject

[mech_eap.orig] / mech_eap / verify_mic.c

diff --git a/mech_eap/verify_mic.c b/mech_eap/verify_mic.c
new file mode 100644 (file)
index 0000000..0a56949
--- /dev/null
+++ b/mech_eap/verify_mic.c
@@ -0,0 +1,76 @@
+/*
+ * Copyright (c) 2011, JANET(UK)
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. 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.
+ *
+ * 3. Neither the name of JANET(UK) 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 HOLDER 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.
+ */
+
+/*
+ * Message protection services: verify a message integrity check.
+ */
+
+#include "gssapiP_eap.h"
+
+OM_uint32
+gss_verify_mic(OM_uint32 *minor,
+               gss_ctx_id_t ctx,
+               gss_buffer_t message_buffer,
+               gss_buffer_t message_token,
+               gss_qop_t *qop_state)
+{
+    OM_uint32 major;
+    gss_iov_buffer_desc iov[3];
+    int conf_state;
+
+    if (message_token->length < 16) {
+        *minor = GSSEAP_TOK_TRUNC;
+        return GSS_S_BAD_SIG;
+    }
+
+    *minor = 0;
+
+    iov[0].type = GSS_IOV_BUFFER_TYPE_DATA;
+    iov[0].buffer = *message_buffer;
+
+    iov[1].type = GSS_IOV_BUFFER_TYPE_HEADER;
+    iov[1].buffer.length = 16;
+    iov[1].buffer.value = message_token->value;
+
+    iov[2].type = GSS_IOV_BUFFER_TYPE_TRAILER;
+    iov[2].buffer.length = message_token->length - 16;
+    iov[2].buffer.value = (unsigned char *)message_token->value + 16;
+
+    GSSEAP_MUTEX_LOCK(&ctx->mutex);
+
+    major = gssEapUnwrapOrVerifyMIC(minor, ctx, &conf_state, qop_state,
+                                    iov, 3, TOK_TYPE_MIC);
+
+    GSSEAP_MUTEX_UNLOCK(&ctx->mutex);
+
+    return major;
+}