Security-57031.1.35.tar.gz

[apple/security.git] / Security / libsecurity_ssl / lib / sslUtils.c

diff --git a/Security/libsecurity_ssl/lib/sslUtils.c b/Security/libsecurity_ssl/lib/sslUtils.c
new file mode 100644 (file)
index 0000000..0390dc7
--- /dev/null
+++ b/Security/libsecurity_ssl/lib/sslUtils.c
@@ -0,0 +1,140 @@
+/*
+ * Copyright (c) 1999-2001,2005-2008,2010-2012,2014 Apple Inc. All Rights Reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ * 
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ * 
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ * 
+ * @APPLE_LICENSE_HEADER_END@
+ */
+
+/*
+ * sslUtils.c - Misc. OS independant SSL utility functions
+ */
+
+/* THIS FILE CONTAINS KERNEL CODE */
+
+#include "sslUtils.h"
+#include "sslTypes.h"
+#include "sslDebug.h"
+
+#include <AssertMacros.h>
+
+#ifndef NDEBUG
+void SSLDump(const unsigned char *data, unsigned long len)
+{
+    unsigned long i;
+    for(i=0;i<len;i++)
+    {
+        if((i&0xf)==0) printf("%04lx :",i);
+        printf(" %02x", data[i]);
+        if((i&0xf)==0xf) printf("\n");
+    }
+    printf("\n");
+}
+#endif
+
+unsigned int
+SSLDecodeInt(const uint8_t *p, size_t length)
+{
+    unsigned int val = 0;
+    check(length > 0 && length <= 4); //anything else would be an internal error.
+    while (length--)
+        val = (val << 8) | *p++;
+    return val;
+}
+
+uint8_t *
+SSLEncodeInt(uint8_t *p, size_t value, size_t length)
+{
+    unsigned char *retVal = p + length; /* Return pointer to char after int */
+    check(length > 0 && length <= 4);  //anything else would be an internal error.
+    while (length--)                    /* Assemble backwards */
+    {   p[length] = (uint8_t)value;     /* Implicit masking to low byte */
+        value >>= 8;
+    }
+    return retVal;
+}
+
+size_t
+SSLDecodeSize(const uint8_t *p, size_t length)
+{
+    unsigned int val = 0;
+    check(length > 0 && length <= 4); //anything else would be an internal error.
+    while (length--)
+        val = (val << 8) | *p++;
+    return val;
+}
+
+uint8_t *
+SSLEncodeSize(uint8_t *p, size_t value, size_t length)
+{
+    unsigned char *retVal = p + length; /* Return pointer to char after int */
+    check(length > 0 && length <= 4);  //anything else would be an internal error.
+    while (length--)                    /* Assemble backwards */
+    {   p[length] = (uint8_t)value;     /* Implicit masking to low byte */
+        value >>= 8;
+    }
+    return retVal;
+}
+
+
+uint8_t *
+SSLEncodeUInt64(uint8_t *p, uint64_t value)
+{
+    p = SSLEncodeInt(p, (value>>32)&0xffffffff, 4);
+    return SSLEncodeInt(p, value&0xffffffff, 4);
+}
+
+
+void
+IncrementUInt64(sslUint64 *v)
+{
+    (*v)++;
+}
+
+void
+SSLDecodeUInt64(const uint8_t *p, size_t length, uint64_t *v)
+{
+    check(length > 0 && length <= 8);
+    if(length<=4) {
+        *v=SSLDecodeInt(p, length);
+    } else {
+        *v=((uint64_t)SSLDecodeInt(p, length-4))<<32 | SSLDecodeInt(p+length-4, 4);
+    }
+}
+
+
+#if    SSL_DEBUG
+
+const char *protocolVersStr(SSLProtocolVersion prot)
+{
+       switch(prot) {
+        case SSL_Version_Undetermined: return "SSL_Version_Undetermined";
+        case SSL_Version_2_0: return "SSL_Version_2_0";
+        case SSL_Version_3_0: return "SSL_Version_3_0";
+        case TLS_Version_1_0: return "TLS_Version_1_0";
+        case TLS_Version_1_1: return "TLS_Version_1_1";
+        case TLS_Version_1_2: return "TLS_Version_1_2";
+        default: sslErrorLog("protocolVersStr: bad prot\n"); return "BAD PROTOCOL";
+       }
+       return NULL;    /* NOT REACHED */
+}
+
+#endif /* SSL_DEBUG */
+
+
+