X-Git-Url: https://mattmccutchen.net/rsync/rsync.git/blobdiff_plain/bd9fca47087cef1fc2d63f6f198d0d30da9ce6a4..fe1c19dcdfa000c2461e85ed7bf712de49904377:/io.c

diff --git a/io.c b/io.c
index 1cfcd722..004ae666 100644
--- a/io.c
+++ b/io.c
@@ -48,6 +48,7 @@ extern int am_daemon;
 extern int am_sender;
 extern int am_generator;
 extern int eol_nulls;
+extern int csum_length;
 extern int checksum_seed;
 extern int protocol_version;
 extern char *remote_filesfrom_file;
@@ -148,7 +149,7 @@ static void check_timeout(void)
 
 	if (t - last_io >= io_timeout) {
 		if (!am_server && !am_daemon) {
-			rprintf(FERROR, "io timeout after %d seconds - exiting\n",
+			rprintf(FERROR, "io timeout after %d seconds -- exiting\n",
 				(int)(t-last_io));
 		}
 		exit_cleanup(RERR_TIMEOUT);
@@ -749,14 +750,13 @@ int64 read_longint(int f)
 	if ((int32)ret != (int32)0xffffffff)
 		return ret;
 
-#ifdef INT64_IS_OFF_T
-	if (sizeof (int64) < 8) {
-		rprintf(FERROR, "Integer overflow: attempted 64-bit offset\n");
-		exit_cleanup(RERR_UNSUPPORTED);
-	}
-#endif
+#if SIZEOF_INT64 < 8
+	rprintf(FERROR, "Integer overflow: attempted 64-bit offset\n");
+	exit_cleanup(RERR_UNSUPPORTED);
+#else
 	readfd(f,b,8);
 	ret = IVAL(b,0) | (((int64)IVAL(b,4))<<32);
+#endif
 
 	return ret;
 }
@@ -779,6 +779,48 @@ unsigned char read_byte(int f)
 	return c;
 }
 
+/* Populate a sum_struct with values from the socket.  This is
+ * called by both the sender and the receiver. */
+void read_sum_head(int f, struct sum_struct *sum)
+{
+	sum->count = read_int(f);
+	sum->blength = read_int(f);
+	if (sum->blength < 0 || sum->blength > MAX_BLOCK_SIZE) {
+		rprintf(FERROR, "[%s] Invalid block length %ld\n",
+			who_am_i(), (long)sum->blength);
+		exit_cleanup(RERR_PROTOCOL);
+	}
+	sum->s2length = protocol_version < 27 ? csum_length : (int)read_int(f);
+	if (sum->s2length < 0 || sum->s2length > MD4_SUM_LENGTH) {
+		rprintf(FERROR, "[%s] Invalid checksum length %d\n",
+			who_am_i(), sum->s2length);
+		exit_cleanup(RERR_PROTOCOL);
+	}
+	sum->remainder = read_int(f);
+	if (sum->remainder < 0 || sum->remainder > sum->blength) {
+		rprintf(FERROR, "[%s] Invalid remainder length %ld\n",
+			who_am_i(), (long)sum->remainder);
+		exit_cleanup(RERR_PROTOCOL);
+	}
+}
+
+/* Send the values from a sum_struct over the socket.  Set sum to
+ * NULL if there are no checksums to send.  This is called by both
+ * the generator and the sender. */
+void write_sum_head(int f, struct sum_struct *sum)
+{
+	static struct sum_struct null_sum;
+
+	if (sum == NULL)
+		sum = &null_sum;
+
+	write_int(f, sum->count);
+	write_int(f, sum->blength);
+	if (protocol_version >= 27)
+		write_int(f, sum->s2length);
+	write_int(f, sum->remainder);
+}
+
 
 /**
  * Sleep after writing to limit I/O bandwidth usage.
@@ -1042,18 +1084,16 @@ void write_longint(int f, int64 x)
 		return;
 	}
 
-#ifdef INT64_IS_OFF_T
-	if (sizeof (int64) < 8) {
-		rprintf(FERROR, "Integer overflow: attempted 64-bit offset\n");
-		exit_cleanup(RERR_UNSUPPORTED);
-	}
-#endif
-
+#if SIZEOF_INT64 < 8
+	rprintf(FERROR, "Integer overflow: attempted 64-bit offset\n");
+	exit_cleanup(RERR_UNSUPPORTED);
+#else
 	write_int(f, (int32)0xFFFFFFFF);
 	SIVAL(b,0,(x&0xFFFFFFFF));
 	SIVAL(b,4,((x>>32)&0xFFFFFFFF));
 
 	writefd(f,b,8);
+#endif
 }
 
 void write_buf(int f,char *buf,size_t len)