Update libsrtp to version 2.0

crypto/kernel/key.c

 /*
  * key.c
  *
  * key usage limits enforcement
- * 
+ *
  * David A. Mcgrew
  * Cisco Systems, Inc.
  */
 /*
- *      
+ *
  * Copyright (c) 2001-2006 Cisco Systems, Inc.
  * All rights reserved.
- * 
+ *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
- * 
+ *
  *   Redistributions of source code must retain the above copyright
  *   notice, this list of conditions and the following disclaimer.
- * 
+ *
  *   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.
- * 
+ *
  *   Neither the name of the 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 HOLDERS 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 HAVE_CONFIG_H
     #include <config.h>
 #endif
 
 #include "key.h"
 
 #define soft_limit 0x10000
 
-err_status_t
-key_limit_set(key_limit_t key, const xtd_seq_num_t s) {
+srtp_err_status_t srtp_key_limit_set (srtp_key_limit_t key, const srtp_xtd_seq_num_t s)
+{
 #ifdef NO_64BIT_MATH
-  if (high32(s) == 0 && low32(s) < soft_limit)
-    return err_status_bad_param;
+    if (high32(s) == 0 && low32(s) < soft_limit) {
+        return srtp_err_status_bad_param;
+    }
 #else
-  if (s < soft_limit)
-    return err_status_bad_param;
+    if (s < soft_limit) {
+        return srtp_err_status_bad_param;
+    }
 #endif
-  key->num_left = s;
-  key->state = key_state_normal;
-  return err_status_ok;
+    key->num_left = s;
+    key->state = srtp_key_state_normal;
+    return srtp_err_status_ok;
 }
 
-err_status_t
-key_limit_clone(key_limit_t original, key_limit_t *new_key) {
-  if (original == NULL)
-    return err_status_bad_param;
-  *new_key = original;
-  return err_status_ok;
+srtp_err_status_t srtp_key_limit_clone (srtp_key_limit_t original, srtp_key_limit_t *new_key)
+{
+    if (original == NULL) {
+        return srtp_err_status_bad_param;
+    }
+    *new_key = original;
+    return srtp_err_status_ok;
 }
 
-err_status_t
-key_limit_check(const key_limit_t key) {
-  if (key->state == key_state_expired)
-    return err_status_key_expired;
-  return err_status_ok;
+srtp_err_status_t srtp_key_limit_check (const srtp_key_limit_t key)
+{
+    if (key->state == srtp_key_state_expired) {
+        return srtp_err_status_key_expired;
+    }
+    return srtp_err_status_ok;
 }
 
-key_event_t
-key_limit_update(key_limit_t key) {
+srtp_key_event_t srtp_key_limit_update (srtp_key_limit_t key)
+{
 #ifdef NO_64BIT_MATH
-  if (low32(key->num_left) == 0)
-  {
-          // carry
-          key->num_left = make64(high32(key->num_left)-1,low32(key->num_left) - 1);
-  }
-  else
-  {
-          // no carry
-          key->num_left = make64(high32(key->num_left),low32(key->num_left) - 1);
-  }
-  if (high32(key->num_left) != 0 || low32(key->num_left) >= soft_limit) {
-    return key_event_normal;   /* we're above the soft limit */
-  }
+    if (low32(key->num_left) == 0) {
+        // carry
+        key->num_left = make64(high32(key->num_left) - 1, low32(key->num_left) - 1);
+    }else  {
+        // no carry
+        key->num_left = make64(high32(key->num_left), low32(key->num_left) - 1);
+    }
+    if (high32(key->num_left) != 0 || low32(key->num_left) >= soft_limit) {
+        return srtp_key_event_normal; /* we're above the soft limit */
+    }
 #else
-  key->num_left--;
-  if (key->num_left >= soft_limit) {
-    return key_event_normal;   /* we're above the soft limit */
-  }
+    key->num_left--;
+    if (key->num_left >= soft_limit) {
+        return srtp_key_event_normal; /* we're above the soft limit */
+    }
 #endif
-  if (key->state == key_state_normal) {
-    /* we just passed the soft limit, so change the state */
-    key->state = key_state_past_soft_limit;
-  }
+    if (key->state == srtp_key_state_normal) {
+        /* we just passed the soft limit, so change the state */
+        key->state = srtp_key_state_past_soft_limit;
+    }
 #ifdef NO_64BIT_MATH
-  if (low32(key->num_left) == 0 && high32(key->num_left == 0))
+    if (low32(key->num_left) == 0 && high32(key->num_left == 0))
 #else
-  if (key->num_left < 1)
+    if (key->num_left < 1)
 #endif
-  { /* we just hit the hard limit */
-    key->state = key_state_expired;
-    return key_event_hard_limit;
-  }
-   return key_event_soft_limit;
+    {   /* we just hit the hard limit */
+        key->state = srtp_key_state_expired;
+        return srtp_key_event_hard_limit;
+    }
+    return srtp_key_event_soft_limit;
 }