--- pgp/src/mdfile.c	2018/04/24 16:39:05	1.1.1.3
+++ pgp/src/mdfile.c	2018/04/24 16:45:12	1.1.1.8
@@ -1,100 +1,118 @@
-/*	mdfile.c  - Message Digest routines for PGP.
-	PGP: Pretty Good(tm) Privacy - public key cryptography for the masses.
-
-	(c) Copyright 1990-1992 by Philip Zimmermann.  All rights reserved.
-	The author assumes no liability for damages resulting from the use
-	of this software, even if the damage results from defects in this
-	software.  No warranty is expressed or implied.
-
-	All the source code Philip Zimmermann wrote for PGP is available for
-	free under the "Copyleft" General Public License from the Free
-	Software Foundation.  A copy of that license agreement is included in
-	the source release package of PGP.  Code developed by others for PGP
-	is also freely available.  Other code that has been incorporated into
-	PGP from other sources was either originally published in the public
-	domain or was used with permission from the various authors.  See the
-	PGP User's Guide for more complete information about licensing,
-	patent restrictions on certain algorithms, trademarks, copyrights,
-	and export controls.  
-*/
-
-#include <stdio.h>
-#include "mpilib.h"
-#include "mdfile.h"
-#include "fileio.h"
-#include "language.h"
-#include "pgp.h"
-
-/* Begin MD5 routines */
-
-/* Note - the routines in this module, except for MD_addbuffer,
- * do not "finish" the MD5 calculation.  MD_addbuffer finishes the
- * calculation in each case, usually to append the timestamp and class info.
- */
-
-/* Computes the message digest for a file from current position for
-   longcount bytes.
-   Uses the RSA Data Security Inc. MD5 Message Digest Algorithm */
-int MDfile0_len(MD5_CTX *mdContext, FILE *f, word32 longcount)
-{	int bytecount;
-	unsigned char buffer[1024];
-
-	MD5Init(mdContext);
-	/* Process 1024 bytes at a time... */
-	do
-	{
-		if (longcount < (word32) 1024)
-			bytecount = (int)longcount;
-		else
-			bytecount = 1024;
-		bytecount = fread(buffer, 1, bytecount, f);
-		if (bytecount>0)
-		{	MD5Update(mdContext, buffer, bytecount);
-			longcount -= bytecount;
-		}
-		/* if text block was short, exit loop */
-	} while (bytecount==1024);
-	return(0);
-}	/* MDfile0_len */
-
-
-/* Computes the message digest for a file from current position to EOF.
-   Uses the RSA Data Security Inc. MD5 Message Digest Algorithm */
-
-static int MDfile0(MD5_CTX *mdContext,FILE *inFile)
-{	int bytes;
-	unsigned char buffer[1024];
-
-	MD5Init(mdContext);
-	while ((bytes = fread(buffer,1,1024,inFile)) != 0)
-		MD5Update(mdContext,buffer,bytes);
-	return(0);
-}
-
-/* Computes the message digest for a specified file */
-
-int MDfile(MD5_CTX *mdContext,char *filename)
-{
-	FILE *inFile;
-	inFile = fopen(filename,FOPRBIN);
-
-	if (inFile == NULL)
-	{	fprintf(pgpout,PSTR("\n\007Can't open file '%s'\n"),filename);
-		return(-1);
-	}
-	MDfile0(mdContext,inFile);
-	fclose (inFile);
-	return(0);
-}
-
-/* Finish the MD5 calculation with an extra buffer implicitly appended 
- * to the data.
- */
-void MD_addbuffer (MD5_CTX *mdContext, byte *buf, int buflen, boolean finish)
-{
-	MD5Update(mdContext,buf,buflen);
-	if (finish)
-		MD5Final(mdContext);
-}
-
-/* End MD5 routines */
+/*      mdfile.c  - Message Digest routines for PGP.
+   PGP: Pretty Good(tm) Privacy - public key cryptography for the masses.
+
+   (c) Copyright 1990-1996 by Philip Zimmermann.  All rights reserved.
+   The author assumes no liability for damages resulting from the use
+   of this software, even if the damage results from defects in this
+   software.  No warranty is expressed or implied.
+
+   Note that while most PGP source modules bear Philip Zimmermann's
+   copyright notice, many of them have been revised or entirely written
+   by contributors who frequently failed to put their names in their
+   code.  Code that has been incorporated into PGP from other authors
+   was either originally published in the public domain or is used with
+   permission from the various authors.
+
+   PGP is available for free to the public under certain restrictions.
+   See the PGP User's Guide (included in the release package) for
+   important information about licensing, patent restrictions on
+   certain algorithms, trademarks, copyrights, and export controls.
+ */
+
+#include <stdio.h>
+#include "mpilib.h"
+#include "mdfile.h"
+#include "fileio.h"
+#include "language.h"
+#include "pgp.h"
+#ifdef MACTC5
+#include "Macutil3.h"
+#endif
+
+/* Begin MD5 routines */
+
+/* Note - the routines in this module, except for MD_addbuffer,
+ * do not "finish" the MD5 calculation.  MD_addbuffer finishes the
+ * calculation in each case, usually to append the timestamp and class info.
+ */
+
+/* Computes the message digest for a file from current position for
+   longcount bytes.
+   Uses the RSA Data Security Inc. MD5 Message Digest Algorithm */
+int MDfile0_len(struct MD5Context *mdContext, FILE * f, word32 longcount)
+{
+    int bytecount;
+    unsigned char buffer[1024];
+
+    MD5Init(mdContext);
+    /* Process 1024 bytes at a time... */
+    do {
+	if (longcount < (word32) 1024)
+	    bytecount = (int) longcount;
+	else
+	    bytecount = 1024;
+	bytecount = fread(buffer, 1, bytecount, f);
+	if (bytecount > 0) {
+	    MD5Update(mdContext, buffer, bytecount);
+	    longcount -= bytecount;
+#ifdef MACTC5
+		mac_poll_for_break();
+#endif
+	}
+	/* if text block was short, exit loop */
+    } while (bytecount == 1024);
+    return 0;
+}				/* MDfile0_len */
+
+
+/* Computes the message digest for a file from current position to EOF.
+   Uses the RSA Data Security Inc. MD5 Message Digest Algorithm */
+
+static int MDfile0(struct MD5Context *mdContext, FILE * inFile)
+{
+    int bytes;
+    unsigned char buffer[1024];
+
+    MD5Init(mdContext);
+    while ((bytes = fread(buffer, 1, 1024, inFile)) != 0)
+#ifdef MACTC5
+		{
+		mac_poll_for_break();
+		MD5Update(mdContext,buffer,bytes);
+		}
+#else
+	MD5Update(mdContext, buffer, bytes);
+#endif
+    return 0;
+}
+
+/* Computes the message digest for a specified file */
+
+int MDfile(struct MD5Context *mdContext, char *filename)
+{
+    FILE *inFile;
+    inFile = fopen(filename, FOPRBIN);
+
+    if (inFile == NULL) {
+	fprintf(pgpout, LANG("\n\007Can't open file '%s'\n"), filename);
+	return -1;
+    }
+    MDfile0(mdContext, inFile);
+    fclose(inFile);
+    return 0;
+}
+
+/* Add a buffer's worth of data to the MD5 computation.  If a digest
+ * pointer is supplied, complete the computation and write the digest.
+ */
+void MD_addbuffer(struct MD5Context *mdContext, byte * buf, int buflen,
+		  byte digest[16])
+{
+    MD5Update(mdContext, buf, buflen);
+    if (digest) {
+	MD5Final(digest, mdContext);
+	burn(*mdContext);	/* Paranoia */
+    }
+}
+
+/* End MD5 routines */