Security-57031.1.35.tar.gz

[apple/security.git] / Security / libsecurity_cryptkit / lib / platform.c

diff --git a/Security/libsecurity_cryptkit/lib/platform.c b/Security/libsecurity_cryptkit/lib/platform.c
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+++ b/Security/libsecurity_cryptkit/lib/platform.c
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+/* Copyright (c) 1998,2011,2014 Apple Inc.  All Rights Reserved.
+ *
+ * NOTICE: USE OF THE MATERIALS ACCOMPANYING THIS NOTICE IS SUBJECT
+ * TO THE TERMS OF THE SIGNED "FAST ELLIPTIC ENCRYPTION (FEE) REFERENCE
+ * SOURCE CODE EVALUATION AGREEMENT" BETWEEN APPLE, INC. AND THE
+ * ORIGINAL LICENSEE THAT OBTAINED THESE MATERIALS FROM APPLE,
+ * INC.  ANY USE OF THESE MATERIALS NOT PERMITTED BY SUCH AGREEMENT WILL
+ * EXPOSE YOU TO LIABILITY.
+ ***************************************************************************
+ *
+ * platform.c - platform-dependent C functions
+ *
+ * Revision History
+ * ----------------
+ *  6 Sep 96 at NeXT
+ *     Created.
+ */
+
+#include "platform.h"
+#include <stdio.h>
+#include "feeDebug.h"
+#ifdef NeXT
+
+/*
+ * OpenStep....
+ */
+void CKRaise(const char *reason) {
+       #if     FEE_DEBUG
+       printf("CryptKit fatal error: %s\n", reason);
+       #endif
+       exit(1);
+}
+
+#import "feeDebug.h"
+
+#if !defined(NeXT_PDO) && FEE_DEBUG
+
+/*
+ * Mach, private build. use quick microsecond-accurate system clock.
+ */
+
+#include <kern/time_stamp.h>
+
+unsigned createRandomSeed()
+{
+       struct tsval tsp;
+
+       (void)kern_timestamp(&tsp);
+       return tsp.low_val;
+}
+
+#else
+
+/*
+ * OpenStep, normal case.
+ */
+#include <sys/types.h>
+#include <time.h>
+
+extern int getpid();
+
+unsigned createRandomSeed(void)
+{
+       time_t curTime;
+       unsigned thisPid;
+
+       time(&curTime);
+       thisPid = (unsigned)getpid();
+
+       return (unsigned)curTime ^ (unsigned)thisPid;
+}
+
+#endif /* FEE_DEBUG */
+
+#elif  WIN32
+
+/*
+ * OpenStep on Windows.
+ */
+#include <process.h>   /* for _getpid() */
+
+void CKRaise(const char *reason) {
+       #if     FEE_DEBUG
+       printf("CryptKit fatal error: %s\n", reason);
+       #endif
+       exit(1);
+}
+
+extern void time(unsigned *tp);
+
+unsigned createRandomSeed()
+{
+       unsigned curTime;
+       unsigned thisPid;
+
+       time(&curTime);
+       thisPid = _getpid();
+       return (unsigned)curTime ^ (unsigned)thisPid;
+}
+
+
+#elif  __MAC_BUILD__
+
+/*
+ * Macintosh, all flavors.
+ */
+#include <stdlib.h>
+#include <time.h>
+
+void CKRaise(const char *reason) {
+       #if     FEE_DEBUG
+       printf("CryptKit fatal error: %s\n", reason);
+       #endif
+       exit(1);
+}
+
+/* for X, this isn't used except for testing when SecurityServer when
+ * Yarrow is not running. So let's strip it down so we don't have
+ * to link against CarbonCore. 
+ */
+#define BARE_BONES_SEED                1
+#if    BARE_BONES_SEED
+
+#include <sys/types.h>
+
+extern int getpid();
+
+unsigned createRandomSeed()
+{
+       time_t curTime;
+       unsigned thisPid;
+
+       time(&curTime);
+       thisPid = (unsigned)getpid();
+
+       return (unsigned)curTime ^ (unsigned)thisPid;
+}
+
+#else  /* BARE_BONES_SEED */
+
+#include <CoreServices/../Frameworks/CarbonCore.framework/Headers/Timer.h>
+#include <CoreServices/../Frameworks/CarbonCore.framework/Headers/LowMem.h>
+
+// this is mighty pitiful anyway...
+unsigned createRandomSeed()
+{
+       UnsignedWide curTime;           
+       //unsigned ticks;                               /* use 16 bits */
+       unsigned rtnHi;
+       unsigned rtnLo;
+       
+       /* FIXME - need a way to distinguish OS9x from Carbon. Carbon
+        * doesn't have LMGetTicks(). */
+        
+       Microseconds(&curTime);         /* low 16 bits are pretty good */
+
+       // Carbon hack
+       // rtnHi = LMGetTicks();
+       rtnHi = 0x5a5aa5a5;
+       rtnLo = curTime.lo & 0xffff;
+       return (rtnHi ^ rtnLo);
+}
+#endif /* BARE_BONES_SEED */
+
+#elif unix
+
+/* try for generic UNIX */
+
+void CKRaise(const char *reason) {
+       #if     FEE_DEBUG
+       printf("CryptKit fatal error: %s\n", reason);
+       #endif
+       exit(1);
+}
+
+#include <sys/types.h>
+#include <time.h>
+
+extern int getpid();
+
+unsigned createRandomSeed()
+{
+       time_t curTime;
+       unsigned thisPid;
+
+       time(&curTime);
+       thisPid = (unsigned)getpid();
+
+       return (unsigned)curTime ^ (unsigned)thisPid;
+}
+
+
+#else
+
+#error platform-specific work needed in security_cryptkit/platform.c
+
+#endif