Compute the right checksum length for the current protocol_version

only once instead of over and over again.

diff --git a/flist.c b/flist.c
index 1bc25bc..3e7481f 100644 (file)
--- a/flist.c
+++ b/flist.c
@@ -68,6 +68,7 @@ extern struct filter_list_struct filter_list;
 extern struct filter_list_struct server_filter_list;
 
 int io_error;
+int checksum_len;
 dev_t filesystem_dev; /* used to implement -x */
 
 static char empty_sum[MD4_SUM_LENGTH];
@@ -84,6 +85,7 @@ void init_flist(void)
 
        /* Figure out how big the file_struct is without trailing padding */
        file_struct_len = offsetof(struct file_struct, flags) + sizeof f.flags;
+       checksum_len = protocol_version < 21 ? 2 : MD4_SUM_LENGTH;
 }
 
 static int show_filelist_p(void)
@@ -475,14 +477,13 @@ void send_file_entry(struct file_struct *file, int f, unsigned short base_flags)
 
        if (always_checksum && (S_ISREG(mode) || protocol_version < 28)) {
                char *sum;
-               int slen = protocol_version < 21 ? 2 : MD4_SUM_LENGTH;
                if (S_ISREG(mode))
                        sum = file->u.sum;
                else {
                        /* Prior to 28, we sent a useless set of nulls. */
                        sum = empty_sum;
                }
-               write_buf(f, sum, slen);
+               write_buf(f, sum, checksum_len);
        }
 
        strlcpy(lastname, fname, MAXPATHLEN);
@@ -698,7 +699,6 @@ static struct file_struct *receive_file_entry(struct file_list *flist,
 
        if (always_checksum && (sum_len || protocol_version < 28)) {
                char *sum;
-               int slen = protocol_version < 21 ? 2 : MD4_SUM_LENGTH;
                if (sum_len) {
                        file->u.sum = sum = bp;
                        /*bp += sum_len;*/
@@ -706,7 +706,7 @@ static struct file_struct *receive_file_entry(struct file_list *flist,
                        /* Prior to 28, we get a useless set of nulls. */
                        sum = empty_sum;
                }
-               read_buf(f, sum, slen);
+               read_buf(f, sum, checksum_len);
        }
 
        if (!preserve_perms) {