mbedtls: Update to upstream version 2.28.3

Rediff patch from PR 1453, lstrlenW is no longer used upstream so
that part of the patch was dropped.

1 files changed, 280 insertions, 273 deletions

diff --git a/thirdparty/mbedtls/library/memory_buffer_alloc.c b/thirdparty/mbedtls/library/memory_buffer_alloc.c
index cc62324bdc..bdde4e0ba4 100644
--- a/thirdparty/mbedtls/library/memory_buffer_alloc.c
+++ b/thirdparty/mbedtls/library/memory_buffer_alloc.c
@@ -42,8 +42,7 @@
 #define MAX_BT 20
 
 typedef struct _memory_header memory_header;
-struct _memory_header
-{
+struct _memory_header {
     size_t          magic1;
     size_t          size;
     size_t          alloc;
@@ -58,8 +57,7 @@ struct _memory_header
     size_t          magic2;
 };
 
-typedef struct
-{
+typedef struct {
     unsigned char   *buf;
     size_t          len;
     memory_header   *first;
@@ -82,146 +80,135 @@ buffer_alloc_ctx;
 static buffer_alloc_ctx heap;
 
 #if defined(MBEDTLS_MEMORY_DEBUG)
-static void debug_header( memory_header *hdr )
+static void debug_header(memory_header *hdr)
 {
 #if defined(MBEDTLS_MEMORY_BACKTRACE)
     size_t i;
 #endif
 
-    mbedtls_fprintf( stderr, "HDR:  PTR(%10zu), PREV(%10zu), NEXT(%10zu), "
-                              "ALLOC(%zu), SIZE(%10zu)\n",
-                      (size_t) hdr, (size_t) hdr->prev, (size_t) hdr->next,
-                      hdr->alloc, hdr->size );
-    mbedtls_fprintf( stderr, "      FPREV(%10zu), FNEXT(%10zu)\n",
-                      (size_t) hdr->prev_free, (size_t) hdr->next_free );
+    mbedtls_fprintf(stderr, "HDR:  PTR(%10zu), PREV(%10zu), NEXT(%10zu), "
+                            "ALLOC(%zu), SIZE(%10zu)\n",
+                    (size_t) hdr, (size_t) hdr->prev, (size_t) hdr->next,
+                    hdr->alloc, hdr->size);
+    mbedtls_fprintf(stderr, "      FPREV(%10zu), FNEXT(%10zu)\n",
+                    (size_t) hdr->prev_free, (size_t) hdr->next_free);
 
 #if defined(MBEDTLS_MEMORY_BACKTRACE)
-    mbedtls_fprintf( stderr, "TRACE: \n" );
-    for( i = 0; i < hdr->trace_count; i++ )
-        mbedtls_fprintf( stderr, "%s\n", hdr->trace[i] );
-    mbedtls_fprintf( stderr, "\n" );
+    mbedtls_fprintf(stderr, "TRACE: \n");
+    for (i = 0; i < hdr->trace_count; i++) {
+        mbedtls_fprintf(stderr, "%s\n", hdr->trace[i]);
+    }
+    mbedtls_fprintf(stderr, "\n");
 #endif
 }
 
-static void debug_chain( void )
+static void debug_chain(void)
 {
     memory_header *cur = heap.first;
 
-    mbedtls_fprintf( stderr, "\nBlock list\n" );
-    while( cur != NULL )
-    {
-        debug_header( cur );
+    mbedtls_fprintf(stderr, "\nBlock list\n");
+    while (cur != NULL) {
+        debug_header(cur);
         cur = cur->next;
     }
 
-    mbedtls_fprintf( stderr, "Free list\n" );
+    mbedtls_fprintf(stderr, "Free list\n");
     cur = heap.first_free;
 
-    while( cur != NULL )
-    {
-        debug_header( cur );
+    while (cur != NULL) {
+        debug_header(cur);
         cur = cur->next_free;
     }
 }
 #endif /* MBEDTLS_MEMORY_DEBUG */
 
-static int verify_header( memory_header *hdr )
+static int verify_header(memory_header *hdr)
 {
-    if( hdr->magic1 != MAGIC1 )
-    {
+    if (hdr->magic1 != MAGIC1) {
 #if defined(MBEDTLS_MEMORY_DEBUG)
-        mbedtls_fprintf( stderr, "FATAL: MAGIC1 mismatch\n" );
+        mbedtls_fprintf(stderr, "FATAL: MAGIC1 mismatch\n");
 #endif
-        return( 1 );
+        return 1;
     }
 
-    if( hdr->magic2 != MAGIC2 )
-    {
+    if (hdr->magic2 != MAGIC2) {
 #if defined(MBEDTLS_MEMORY_DEBUG)
-        mbedtls_fprintf( stderr, "FATAL: MAGIC2 mismatch\n" );
+        mbedtls_fprintf(stderr, "FATAL: MAGIC2 mismatch\n");
 #endif
-        return( 1 );
+        return 1;
     }
 
-    if( hdr->alloc > 1 )
-    {
+    if (hdr->alloc > 1) {
 #if defined(MBEDTLS_MEMORY_DEBUG)
-        mbedtls_fprintf( stderr, "FATAL: alloc has illegal value\n" );
+        mbedtls_fprintf(stderr, "FATAL: alloc has illegal value\n");
 #endif
-        return( 1 );
+        return 1;
     }
 
-    if( hdr->prev != NULL && hdr->prev == hdr->next )
-    {
+    if (hdr->prev != NULL && hdr->prev == hdr->next) {
 #if defined(MBEDTLS_MEMORY_DEBUG)
-        mbedtls_fprintf( stderr, "FATAL: prev == next\n" );
+        mbedtls_fprintf(stderr, "FATAL: prev == next\n");
 #endif
-        return( 1 );
+        return 1;
     }
 
-    if( hdr->prev_free != NULL && hdr->prev_free == hdr->next_free )
-    {
+    if (hdr->prev_free != NULL && hdr->prev_free == hdr->next_free) {
 #if defined(MBEDTLS_MEMORY_DEBUG)
-        mbedtls_fprintf( stderr, "FATAL: prev_free == next_free\n" );
+        mbedtls_fprintf(stderr, "FATAL: prev_free == next_free\n");
 #endif
-        return( 1 );
+        return 1;
     }
 
-    return( 0 );
+    return 0;
 }
 
-static int verify_chain( void )
+static int verify_chain(void)
 {
     memory_header *prv = heap.first, *cur;
 
-    if( prv == NULL || verify_header( prv ) != 0 )
-    {
+    if (prv == NULL || verify_header(prv) != 0) {
 #if defined(MBEDTLS_MEMORY_DEBUG)
-        mbedtls_fprintf( stderr, "FATAL: verification of first header "
-                                  "failed\n" );
+        mbedtls_fprintf(stderr, "FATAL: verification of first header "
+                                "failed\n");
 #endif
-        return( 1 );
+        return 1;
     }
 
-    if( heap.first->prev != NULL )
-    {
+    if (heap.first->prev != NULL) {
 #if defined(MBEDTLS_MEMORY_DEBUG)
-        mbedtls_fprintf( stderr, "FATAL: verification failed: "
-                                  "first->prev != NULL\n" );
+        mbedtls_fprintf(stderr, "FATAL: verification failed: "
+                                "first->prev != NULL\n");
 #endif
-        return( 1 );
+        return 1;
     }
 
     cur = heap.first->next;
 
-    while( cur != NULL )
-    {
-        if( verify_header( cur ) != 0 )
-        {
+    while (cur != NULL) {
+        if (verify_header(cur) != 0) {
 #if defined(MBEDTLS_MEMORY_DEBUG)
-            mbedtls_fprintf( stderr, "FATAL: verification of header "
-                                      "failed\n" );
+            mbedtls_fprintf(stderr, "FATAL: verification of header "
+                                    "failed\n");
 #endif
-            return( 1 );
+            return 1;
         }
 
-        if( cur->prev != prv )
-        {
+        if (cur->prev != prv) {
 #if defined(MBEDTLS_MEMORY_DEBUG)
-            mbedtls_fprintf( stderr, "FATAL: verification failed: "
-                                      "cur->prev != prv\n" );
+            mbedtls_fprintf(stderr, "FATAL: verification failed: "
+                                    "cur->prev != prv\n");
 #endif
-            return( 1 );
+            return 1;
         }
 
         prv = cur;
         cur = cur->next;
     }
 
-    return( 0 );
+    return 0;
 }
 
-static void *buffer_alloc_calloc( size_t n, size_t size )
+static void *buffer_alloc_calloc(size_t n, size_t size)
 {
     memory_header *new, *cur = heap.first_free;
     unsigned char *p;
@@ -232,42 +219,43 @@ static void *buffer_alloc_calloc( size_t n, size_t size )
     size_t trace_cnt;
 #endif
 
-    if( heap.buf == NULL || heap.first == NULL )
-        return( NULL );
+    if (heap.buf == NULL || heap.first == NULL) {
+        return NULL;
+    }
 
     original_len = len = n * size;
 
-    if( n == 0 || size == 0 || len / n != size )
-        return( NULL );
-    else if( len > (size_t)-MBEDTLS_MEMORY_ALIGN_MULTIPLE )
-        return( NULL );
+    if (n == 0 || size == 0 || len / n != size) {
+        return NULL;
+    } else if (len > (size_t) -MBEDTLS_MEMORY_ALIGN_MULTIPLE) {
+        return NULL;
+    }
 
-    if( len % MBEDTLS_MEMORY_ALIGN_MULTIPLE )
-    {
+    if (len % MBEDTLS_MEMORY_ALIGN_MULTIPLE) {
         len -= len % MBEDTLS_MEMORY_ALIGN_MULTIPLE;
         len += MBEDTLS_MEMORY_ALIGN_MULTIPLE;
     }
 
     // Find block that fits
     //
-    while( cur != NULL )
-    {
-        if( cur->size >= len )
+    while (cur != NULL) {
+        if (cur->size >= len) {
             break;
+        }
 
         cur = cur->next_free;
     }
 
-    if( cur == NULL )
-        return( NULL );
+    if (cur == NULL) {
+        return NULL;
+    }
 
-    if( cur->alloc != 0 )
-    {
+    if (cur->alloc != 0) {
 #if defined(MBEDTLS_MEMORY_DEBUG)
-        mbedtls_fprintf( stderr, "FATAL: block in free_list but allocated "
-                                  "data\n" );
+        mbedtls_fprintf(stderr, "FATAL: block in free_list but allocated "
+                                "data\n");
 #endif
-        mbedtls_exit( 1 );
+        mbedtls_exit(1);
     }
 
 #if defined(MBEDTLS_MEMORY_DEBUG)
@@ -276,45 +264,48 @@ static void *buffer_alloc_calloc( size_t n, size_t size )
 
     // Found location, split block if > memory_header + 4 room left
     //
-    if( cur->size - len < sizeof(memory_header) +
-                          MBEDTLS_MEMORY_ALIGN_MULTIPLE )
-    {
+    if (cur->size - len < sizeof(memory_header) +
+        MBEDTLS_MEMORY_ALIGN_MULTIPLE) {
         cur->alloc = 1;
 
         // Remove from free_list
         //
-        if( cur->prev_free != NULL )
+        if (cur->prev_free != NULL) {
             cur->prev_free->next_free = cur->next_free;
-        else
+        } else {
             heap.first_free = cur->next_free;
+        }
 
-        if( cur->next_free != NULL )
+        if (cur->next_free != NULL) {
             cur->next_free->prev_free = cur->prev_free;
+        }
 
         cur->prev_free = NULL;
         cur->next_free = NULL;
 
 #if defined(MBEDTLS_MEMORY_DEBUG)
         heap.total_used += cur->size;
-        if( heap.total_used > heap.maximum_used )
+        if (heap.total_used > heap.maximum_used) {
             heap.maximum_used = heap.total_used;
+        }
 #endif
 #if defined(MBEDTLS_MEMORY_BACKTRACE)
-        trace_cnt = backtrace( trace_buffer, MAX_BT );
-        cur->trace = backtrace_symbols( trace_buffer, trace_cnt );
+        trace_cnt = backtrace(trace_buffer, MAX_BT);
+        cur->trace = backtrace_symbols(trace_buffer, trace_cnt);
         cur->trace_count = trace_cnt;
 #endif
 
-        if( ( heap.verify & MBEDTLS_MEMORY_VERIFY_ALLOC ) && verify_chain() != 0 )
-            mbedtls_exit( 1 );
+        if ((heap.verify & MBEDTLS_MEMORY_VERIFY_ALLOC) && verify_chain() != 0) {
+            mbedtls_exit(1);
+        }
 
-        ret = (unsigned char *) cur + sizeof( memory_header );
-        memset( ret, 0, original_len );
+        ret = (unsigned char *) cur + sizeof(memory_header);
+        memset(ret, 0, original_len);
 
-        return( ret );
+        return ret;
     }
 
-    p = ( (unsigned char *) cur ) + sizeof(memory_header) + len;
+    p = ((unsigned char *) cur) + sizeof(memory_header) + len;
     new = (memory_header *) p;
 
     new->size = cur->size - len - sizeof(memory_header);
@@ -328,20 +319,23 @@ static void *buffer_alloc_calloc( size_t n, size_t size )
     new->magic1 = MAGIC1;
     new->magic2 = MAGIC2;
 
-    if( new->next != NULL )
+    if (new->next != NULL) {
         new->next->prev = new;
+    }
 
     // Replace cur with new in free_list
     //
     new->prev_free = cur->prev_free;
     new->next_free = cur->next_free;
-    if( new->prev_free != NULL )
+    if (new->prev_free != NULL) {
         new->prev_free->next_free = new;
-    else
+    } else {
         heap.first_free = new;
+    }
 
-    if( new->next_free != NULL )
+    if (new->next_free != NULL) {
         new->next_free->prev_free = new;
+    }
 
     cur->alloc = 1;
     cur->size = len;
@@ -351,57 +345,60 @@ static void *buffer_alloc_calloc( size_t n, size_t size )
 
 #if defined(MBEDTLS_MEMORY_DEBUG)
     heap.header_count++;
-    if( heap.header_count > heap.maximum_header_count )
+    if (heap.header_count > heap.maximum_header_count) {
         heap.maximum_header_count = heap.header_count;
+    }
     heap.total_used += cur->size;
-    if( heap.total_used > heap.maximum_used )
+    if (heap.total_used > heap.maximum_used) {
         heap.maximum_used = heap.total_used;
+    }
 #endif
 #if defined(MBEDTLS_MEMORY_BACKTRACE)
-    trace_cnt = backtrace( trace_buffer, MAX_BT );
-    cur->trace = backtrace_symbols( trace_buffer, trace_cnt );
+    trace_cnt = backtrace(trace_buffer, MAX_BT);
+    cur->trace = backtrace_symbols(trace_buffer, trace_cnt);
     cur->trace_count = trace_cnt;
 #endif
 
-    if( ( heap.verify & MBEDTLS_MEMORY_VERIFY_ALLOC ) && verify_chain() != 0 )
-        mbedtls_exit( 1 );
+    if ((heap.verify & MBEDTLS_MEMORY_VERIFY_ALLOC) && verify_chain() != 0) {
+        mbedtls_exit(1);
+    }
 
-    ret = (unsigned char *) cur + sizeof( memory_header );
-    memset( ret, 0, original_len );
+    ret = (unsigned char *) cur + sizeof(memory_header);
+    memset(ret, 0, original_len);
 
-    return( ret );
+    return ret;
 }
 
-static void buffer_alloc_free( void *ptr )
+static void buffer_alloc_free(void *ptr)
 {
     memory_header *hdr, *old = NULL;
     unsigned char *p = (unsigned char *) ptr;
 
-    if( ptr == NULL || heap.buf == NULL || heap.first == NULL )
+    if (ptr == NULL || heap.buf == NULL || heap.first == NULL) {
         return;
+    }
 
-    if( p < heap.buf || p >= heap.buf + heap.len )
-    {
+    if (p < heap.buf || p >= heap.buf + heap.len) {
 #if defined(MBEDTLS_MEMORY_DEBUG)
-        mbedtls_fprintf( stderr, "FATAL: mbedtls_free() outside of managed "
-                                  "space\n" );
+        mbedtls_fprintf(stderr, "FATAL: mbedtls_free() outside of managed "
+                                "space\n");
 #endif
-        mbedtls_exit( 1 );
+        mbedtls_exit(1);
     }
 
     p -= sizeof(memory_header);
     hdr = (memory_header *) p;
 
-    if( verify_header( hdr ) != 0 )
-        mbedtls_exit( 1 );
+    if (verify_header(hdr) != 0) {
+        mbedtls_exit(1);
+    }
 
-    if( hdr->alloc != 1 )
-    {
+    if (hdr->alloc != 1) {
 #if defined(MBEDTLS_MEMORY_DEBUG)
-        mbedtls_fprintf( stderr, "FATAL: mbedtls_free() on unallocated "
-                                  "data\n" );
+        mbedtls_fprintf(stderr, "FATAL: mbedtls_free() on unallocated "
+                                "data\n");
 #endif
-        mbedtls_exit( 1 );
+        mbedtls_exit(1);
     }
 
     hdr->alloc = 0;
@@ -412,15 +409,14 @@ static void buffer_alloc_free( void *ptr )
 #endif
 
 #if defined(MBEDTLS_MEMORY_BACKTRACE)
-    free( hdr->trace );
+    free(hdr->trace);
     hdr->trace = NULL;
     hdr->trace_count = 0;
 #endif
 
     // Regroup with block before
     //
-    if( hdr->prev != NULL && hdr->prev->alloc == 0 )
-    {
+    if (hdr->prev != NULL && hdr->prev->alloc == 0) {
 #if defined(MBEDTLS_MEMORY_DEBUG)
         heap.header_count--;
 #endif
@@ -429,16 +425,16 @@ static void buffer_alloc_free( void *ptr )
         old = hdr;
         hdr = hdr->prev;
 
-        if( hdr->next != NULL )
+        if (hdr->next != NULL) {
             hdr->next->prev = hdr;
+        }
 
-        memset( old, 0, sizeof(memory_header) );
+        memset(old, 0, sizeof(memory_header));
     }
 
     // Regroup with block after
     //
-    if( hdr->next != NULL && hdr->next->alloc == 0 )
-    {
+    if (hdr->next != NULL && hdr->next->alloc == 0) {
 #if defined(MBEDTLS_MEMORY_DEBUG)
         heap.header_count--;
 #endif
@@ -446,95 +442,97 @@ static void buffer_alloc_free( void *ptr )
         old = hdr->next;
         hdr->next = hdr->next->next;
 
-        if( hdr->prev_free != NULL || hdr->next_free != NULL )
-        {
-            if( hdr->prev_free != NULL )
+        if (hdr->prev_free != NULL || hdr->next_free != NULL) {
+            if (hdr->prev_free != NULL) {
                 hdr->prev_free->next_free = hdr->next_free;
-            else
+            } else {
                 heap.first_free = hdr->next_free;
+            }
 
-            if( hdr->next_free != NULL )
+            if (hdr->next_free != NULL) {
                 hdr->next_free->prev_free = hdr->prev_free;
+            }
         }
 
         hdr->prev_free = old->prev_free;
         hdr->next_free = old->next_free;
 
-        if( hdr->prev_free != NULL )
+        if (hdr->prev_free != NULL) {
             hdr->prev_free->next_free = hdr;
-        else
+        } else {
             heap.first_free = hdr;
+        }
 
-        if( hdr->next_free != NULL )
+        if (hdr->next_free != NULL) {
             hdr->next_free->prev_free = hdr;
+        }
 
-        if( hdr->next != NULL )
+        if (hdr->next != NULL) {
             hdr->next->prev = hdr;
+        }
 
-        memset( old, 0, sizeof(memory_header) );
+        memset(old, 0, sizeof(memory_header));
     }
 
     // Prepend to free_list if we have not merged
     // (Does not have to stay in same order as prev / next list)
     //
-    if( old == NULL )
-    {
+    if (old == NULL) {
         hdr->next_free = heap.first_free;
-        if( heap.first_free != NULL )
+        if (heap.first_free != NULL) {
             heap.first_free->prev_free = hdr;
+        }
         heap.first_free = hdr;
     }
 
-    if( ( heap.verify & MBEDTLS_MEMORY_VERIFY_FREE ) && verify_chain() != 0 )
-        mbedtls_exit( 1 );
+    if ((heap.verify & MBEDTLS_MEMORY_VERIFY_FREE) && verify_chain() != 0) {
+        mbedtls_exit(1);
+    }
 }
 
-void mbedtls_memory_buffer_set_verify( int verify )
+void mbedtls_memory_buffer_set_verify(int verify)
 {
     heap.verify = verify;
 }
 
-int mbedtls_memory_buffer_alloc_verify( void )
+int mbedtls_memory_buffer_alloc_verify(void)
 {
     return verify_chain();
 }
 
 #if defined(MBEDTLS_MEMORY_DEBUG)
-void mbedtls_memory_buffer_alloc_status( void )
+void mbedtls_memory_buffer_alloc_status(void)
 {
-    mbedtls_fprintf( stderr,
-                      "Current use: %zu blocks / %zu bytes, max: %zu blocks / "
-                      "%zu bytes (total %zu bytes), alloc / free: %zu / %zu\n",
-                      heap.header_count, heap.total_used,
-                      heap.maximum_header_count, heap.maximum_used,
-                      heap.maximum_header_count * sizeof( memory_header )
-                      + heap.maximum_used,
-                      heap.alloc_count, heap.free_count );
-
-    if( heap.first->next == NULL )
-    {
-        mbedtls_fprintf( stderr, "All memory de-allocated in stack buffer\n" );
-    }
-    else
-    {
-        mbedtls_fprintf( stderr, "Memory currently allocated:\n" );
+    mbedtls_fprintf(stderr,
+                    "Current use: %zu blocks / %zu bytes, max: %zu blocks / "
+                    "%zu bytes (total %zu bytes), alloc / free: %zu / %zu\n",
+                    heap.header_count, heap.total_used,
+                    heap.maximum_header_count, heap.maximum_used,
+                    heap.maximum_header_count * sizeof(memory_header)
+                    + heap.maximum_used,
+                    heap.alloc_count, heap.free_count);
+
+    if (heap.first->next == NULL) {
+        mbedtls_fprintf(stderr, "All memory de-allocated in stack buffer\n");
+    } else {
+        mbedtls_fprintf(stderr, "Memory currently allocated:\n");
         debug_chain();
     }
 }
 
-void mbedtls_memory_buffer_alloc_max_get( size_t *max_used, size_t *max_blocks )
+void mbedtls_memory_buffer_alloc_max_get(size_t *max_used, size_t *max_blocks)
 {
     *max_used   = heap.maximum_used;
     *max_blocks = heap.maximum_header_count;
 }
 
-void mbedtls_memory_buffer_alloc_max_reset( void )
+void mbedtls_memory_buffer_alloc_max_reset(void)
 {
     heap.maximum_used = 0;
     heap.maximum_header_count = 0;
 }
 
-void mbedtls_memory_buffer_alloc_cur_get( size_t *cur_used, size_t *cur_blocks )
+void mbedtls_memory_buffer_alloc_cur_get(size_t *cur_used, size_t *cur_blocks)
 {
     *cur_used   = heap.total_used;
     *cur_blocks = heap.header_count;
@@ -542,202 +540,211 @@ void mbedtls_memory_buffer_alloc_cur_get( size_t *cur_used, size_t *cur_blocks )
 #endif /* MBEDTLS_MEMORY_DEBUG */
 
 #if defined(MBEDTLS_THREADING_C)
-static void *buffer_alloc_calloc_mutexed( size_t n, size_t size )
+static void *buffer_alloc_calloc_mutexed(size_t n, size_t size)
 {
     void *buf;
-    if( mbedtls_mutex_lock( &heap.mutex ) != 0 )
-        return( NULL );
-    buf = buffer_alloc_calloc( n, size );
-    if( mbedtls_mutex_unlock( &heap.mutex ) )
-        return( NULL );
-    return( buf );
+    if (mbedtls_mutex_lock(&heap.mutex) != 0) {
+        return NULL;
+    }
+    buf = buffer_alloc_calloc(n, size);
+    if (mbedtls_mutex_unlock(&heap.mutex)) {
+        return NULL;
+    }
+    return buf;
 }
 
-static void buffer_alloc_free_mutexed( void *ptr )
+static void buffer_alloc_free_mutexed(void *ptr)
 {
     /* We have no good option here, but corrupting the heap seems
      * worse than losing memory. */
-    if( mbedtls_mutex_lock( &heap.mutex ) )
+    if (mbedtls_mutex_lock(&heap.mutex)) {
         return;
-    buffer_alloc_free( ptr );
-    (void) mbedtls_mutex_unlock( &heap.mutex );
+    }
+    buffer_alloc_free(ptr);
+    (void) mbedtls_mutex_unlock(&heap.mutex);
 }
 #endif /* MBEDTLS_THREADING_C */
 
-void mbedtls_memory_buffer_alloc_init( unsigned char *buf, size_t len )
+void mbedtls_memory_buffer_alloc_init(unsigned char *buf, size_t len)
 {
-    memset( &heap, 0, sizeof( buffer_alloc_ctx ) );
+    memset(&heap, 0, sizeof(buffer_alloc_ctx));
 
 #if defined(MBEDTLS_THREADING_C)
-    mbedtls_mutex_init( &heap.mutex );
-    mbedtls_platform_set_calloc_free( buffer_alloc_calloc_mutexed,
-                              buffer_alloc_free_mutexed );
+    mbedtls_mutex_init(&heap.mutex);
+    mbedtls_platform_set_calloc_free(buffer_alloc_calloc_mutexed,
+                                     buffer_alloc_free_mutexed);
 #else
-    mbedtls_platform_set_calloc_free( buffer_alloc_calloc, buffer_alloc_free );
+    mbedtls_platform_set_calloc_free(buffer_alloc_calloc, buffer_alloc_free);
 #endif
 
-    if( len < sizeof( memory_header ) + MBEDTLS_MEMORY_ALIGN_MULTIPLE )
+    if (len < sizeof(memory_header) + MBEDTLS_MEMORY_ALIGN_MULTIPLE) {
         return;
-    else if( (size_t)buf % MBEDTLS_MEMORY_ALIGN_MULTIPLE )
-    {
+    } else if ((size_t) buf % MBEDTLS_MEMORY_ALIGN_MULTIPLE) {
         /* Adjust len first since buf is used in the computation */
         len -= MBEDTLS_MEMORY_ALIGN_MULTIPLE
-             - (size_t)buf % MBEDTLS_MEMORY_ALIGN_MULTIPLE;
+               - (size_t) buf % MBEDTLS_MEMORY_ALIGN_MULTIPLE;
         buf += MBEDTLS_MEMORY_ALIGN_MULTIPLE
-             - (size_t)buf % MBEDTLS_MEMORY_ALIGN_MULTIPLE;
+               - (size_t) buf % MBEDTLS_MEMORY_ALIGN_MULTIPLE;
     }
 
-    memset( buf, 0, len );
+    memset(buf, 0, len);
 
     heap.buf = buf;
     heap.len = len;
 
-    heap.first = (memory_header *)buf;
-    heap.first->size = len - sizeof( memory_header );
+    heap.first = (memory_header *) buf;
+    heap.first->size = len - sizeof(memory_header);
     heap.first->magic1 = MAGIC1;
     heap.first->magic2 = MAGIC2;
     heap.first_free = heap.first;
 }
 
-void mbedtls_memory_buffer_alloc_free( void )
+void mbedtls_memory_buffer_alloc_free(void)
 {
 #if defined(MBEDTLS_THREADING_C)
-    mbedtls_mutex_free( &heap.mutex );
+    mbedtls_mutex_free(&heap.mutex);
 #endif
-    mbedtls_platform_zeroize( &heap, sizeof(buffer_alloc_ctx) );
+    mbedtls_platform_zeroize(&heap, sizeof(buffer_alloc_ctx));
 }
 
 #if defined(MBEDTLS_SELF_TEST)
-static int check_pointer( void *p )
+static int check_pointer(void *p)
 {
-    if( p == NULL )
-        return( -1 );
+    if (p == NULL) {
+        return -1;
+    }
 
-    if( (size_t) p % MBEDTLS_MEMORY_ALIGN_MULTIPLE != 0 )
-        return( -1 );
+    if ((size_t) p % MBEDTLS_MEMORY_ALIGN_MULTIPLE != 0) {
+        return -1;
+    }
 
-    return( 0 );
+    return 0;
 }
 
-static int check_all_free( void )
+static int check_all_free(void)
 {
-    if(
+    if (
 #if defined(MBEDTLS_MEMORY_DEBUG)
         heap.total_used != 0 ||
 #endif
         heap.first != heap.first_free ||
-        (void *) heap.first != (void *) heap.buf )
-    {
-        return( -1 );
+        (void *) heap.first != (void *) heap.buf) {
+        return -1;
     }
 
-    return( 0 );
+    return 0;
 }
 
-#define TEST_ASSERT( condition )            \
-    if( ! (condition) )                     \
+#define TEST_ASSERT(condition)            \
+    if (!(condition))                     \
     {                                       \
-        if( verbose != 0 )                  \
-            mbedtls_printf( "failed\n" );  \
+        if (verbose != 0)                  \
+        mbedtls_printf("failed\n");  \
                                             \
         ret = 1;                            \
         goto cleanup;                       \
     }
 
-int mbedtls_memory_buffer_alloc_self_test( int verbose )
+int mbedtls_memory_buffer_alloc_self_test(int verbose)
 {
     unsigned char buf[1024];
     unsigned char *p, *q, *r, *end;
     int ret = 0;
 
-    if( verbose != 0 )
-        mbedtls_printf( "  MBA test #1 (basic alloc-free cycle): " );
+    if (verbose != 0) {
+        mbedtls_printf("  MBA test #1 (basic alloc-free cycle): ");
+    }
 
-    mbedtls_memory_buffer_alloc_init( buf, sizeof( buf ) );
+    mbedtls_memory_buffer_alloc_init(buf, sizeof(buf));
 
-    p = mbedtls_calloc( 1, 1 );
-    q = mbedtls_calloc( 1, 128 );
-    r = mbedtls_calloc( 1, 16 );
+    p = mbedtls_calloc(1, 1);
+    q = mbedtls_calloc(1, 128);
+    r = mbedtls_calloc(1, 16);
 
-    TEST_ASSERT( check_pointer( p ) == 0 &&
-                 check_pointer( q ) == 0 &&
-                 check_pointer( r ) == 0 );
+    TEST_ASSERT(check_pointer(p) == 0 &&
+                check_pointer(q) == 0 &&
+                check_pointer(r) == 0);
 
-    mbedtls_free( r );
-    mbedtls_free( q );
-    mbedtls_free( p );
+    mbedtls_free(r);
+    mbedtls_free(q);
+    mbedtls_free(p);
 
-    TEST_ASSERT( check_all_free( ) == 0 );
+    TEST_ASSERT(check_all_free() == 0);
 
     /* Memorize end to compare with the next test */
     end = heap.buf + heap.len;
 
-    mbedtls_memory_buffer_alloc_free( );
+    mbedtls_memory_buffer_alloc_free();
 
-    if( verbose != 0 )
-        mbedtls_printf( "passed\n" );
+    if (verbose != 0) {
+        mbedtls_printf("passed\n");
+    }
 
-    if( verbose != 0 )
-        mbedtls_printf( "  MBA test #2 (buf not aligned): " );
+    if (verbose != 0) {
+        mbedtls_printf("  MBA test #2 (buf not aligned): ");
+    }
 
-    mbedtls_memory_buffer_alloc_init( buf + 1, sizeof( buf ) - 1 );
+    mbedtls_memory_buffer_alloc_init(buf + 1, sizeof(buf) - 1);
 
-    TEST_ASSERT( heap.buf + heap.len == end );
+    TEST_ASSERT(heap.buf + heap.len == end);
 
-    p = mbedtls_calloc( 1, 1 );
-    q = mbedtls_calloc( 1, 128 );
-    r = mbedtls_calloc( 1, 16 );
+    p = mbedtls_calloc(1, 1);
+    q = mbedtls_calloc(1, 128);
+    r = mbedtls_calloc(1, 16);
 
-    TEST_ASSERT( check_pointer( p ) == 0 &&
-                 check_pointer( q ) == 0 &&
-                 check_pointer( r ) == 0 );
+    TEST_ASSERT(check_pointer(p) == 0 &&
+                check_pointer(q) == 0 &&
+                check_pointer(r) == 0);
 
-    mbedtls_free( r );
-    mbedtls_free( q );
-    mbedtls_free( p );
+    mbedtls_free(r);
+    mbedtls_free(q);
+    mbedtls_free(p);
 
-    TEST_ASSERT( check_all_free( ) == 0 );
+    TEST_ASSERT(check_all_free() == 0);
 
-    mbedtls_memory_buffer_alloc_free( );
+    mbedtls_memory_buffer_alloc_free();
 
-    if( verbose != 0 )
-        mbedtls_printf( "passed\n" );
+    if (verbose != 0) {
+        mbedtls_printf("passed\n");
+    }
 
-    if( verbose != 0 )
-        mbedtls_printf( "  MBA test #3 (full): " );
+    if (verbose != 0) {
+        mbedtls_printf("  MBA test #3 (full): ");
+    }
 
-    mbedtls_memory_buffer_alloc_init( buf, sizeof( buf ) );
+    mbedtls_memory_buffer_alloc_init(buf, sizeof(buf));
 
-    p = mbedtls_calloc( 1, sizeof( buf ) - sizeof( memory_header ) );
+    p = mbedtls_calloc(1, sizeof(buf) - sizeof(memory_header));
 
-    TEST_ASSERT( check_pointer( p ) == 0 );
-    TEST_ASSERT( mbedtls_calloc( 1, 1 ) == NULL );
+    TEST_ASSERT(check_pointer(p) == 0);
+    TEST_ASSERT(mbedtls_calloc(1, 1) == NULL);
 
-    mbedtls_free( p );
+    mbedtls_free(p);
 
-    p = mbedtls_calloc( 1, sizeof( buf ) - 2 * sizeof( memory_header ) - 16 );
-    q = mbedtls_calloc( 1, 16 );
+    p = mbedtls_calloc(1, sizeof(buf) - 2 * sizeof(memory_header) - 16);
+    q = mbedtls_calloc(1, 16);
 
-    TEST_ASSERT( check_pointer( p ) == 0 && check_pointer( q ) == 0 );
-    TEST_ASSERT( mbedtls_calloc( 1, 1 ) == NULL );
+    TEST_ASSERT(check_pointer(p) == 0 && check_pointer(q) == 0);
+    TEST_ASSERT(mbedtls_calloc(1, 1) == NULL);
 
-    mbedtls_free( q );
+    mbedtls_free(q);
 
-    TEST_ASSERT( mbedtls_calloc( 1, 17 ) == NULL );
+    TEST_ASSERT(mbedtls_calloc(1, 17) == NULL);
 
-    mbedtls_free( p );
+    mbedtls_free(p);
 
-    TEST_ASSERT( check_all_free( ) == 0 );
+    TEST_ASSERT(check_all_free() == 0);
 
-    mbedtls_memory_buffer_alloc_free( );
+    mbedtls_memory_buffer_alloc_free();
 
-    if( verbose != 0 )
-        mbedtls_printf( "passed\n" );
+    if (verbose != 0) {
+        mbedtls_printf("passed\n");
+    }
 
 cleanup:
-    mbedtls_memory_buffer_alloc_free( );
+    mbedtls_memory_buffer_alloc_free();
 
-    return( ret );
+    return ret;
 }
 #endif /* MBEDTLS_SELF_TEST */