X-Git-Url: https://mattmccutchen.net/rsync/rsync.git/blobdiff_plain/f94e821c782952437d7fe5a2ae1e0b1db8a4f4ab..feaa89c410544775afc19eac4a966e8345d5134a:/checksum.c

diff --git a/checksum.c b/checksum.c
index 1fd1c55c..7b8035cc 100644
--- a/checksum.c
+++ b/checksum.c
@@ -19,7 +19,7 @@
 
 #include "rsync.h"
 
-int csum_length=SUM_LENGTH;
+int csum_length=2; /* initial value */
 
 #define CSUM_CHUNK 64
 
@@ -30,18 +30,20 @@ extern int remote_version;
   a simple 32 bit checksum that can be upadted from either end
   (inspired by Mark Adler's Adler-32 checksum)
   */
-uint32 get_checksum1(char *buf,int len)
+uint32 get_checksum1(char *buf1,int len)
 {
     int i;
     uint32 s1, s2;
+    signed char *buf = (signed char *)buf1;
 
     s1 = s2 = 0;
     for (i = 0; i < (len-4); i+=4) {
-	s2 += 4*(s1 + buf[i]) + 3*buf[i+1] + 2*buf[i+2] + buf[i+3];
-	s1 += (buf[i+0] + buf[i+1] + buf[i+2] + buf[i+3]); 
+	s2 += 4*(s1 + buf[i]) + 3*buf[i+1] + 2*buf[i+2] + buf[i+3] + 
+	  10*CHAR_OFFSET;
+	s1 += (buf[i+0] + buf[i+1] + buf[i+2] + buf[i+3] + 4*CHAR_OFFSET); 
     }
     for (; i < len; i++) {
-	s1 += buf[i]; s2 += s1;
+	s1 += (buf[i]+CHAR_OFFSET); s2 += s1;
     }
     return (s1 & 0xffff) + (s2 << 16);
 }