X-Git-Url: https://mattmccutchen.net/rsync/rsync.git/blobdiff_plain/b9f592fbf50b0dc9e3d1d33b8deb2bf9abad9ef6..d051056f921f465c487a85f9fa29a2324332bc4b:/compat.c

diff --git a/compat.c b/compat.c
index 57563b0b..ef34b37c 100644
--- a/compat.c
+++ b/compat.c
@@ -29,21 +29,21 @@ int remote_protocol = 0;
 
 extern int verbose;
 extern int am_server;
-extern int am_sender;
+extern int inplace;
+extern int fuzzy_basis;
 extern int read_batch;
 extern int checksum_seed;
+extern int basis_dir_cnt;
+extern int prune_empty_dirs;
 extern int protocol_version;
+extern char *dest_option;
 
 void setup_protocol(int f_out,int f_in)
 {
 	if (remote_protocol == 0) {
-		if (am_server) {
-			remote_protocol = read_int(f_in);
+		if (!read_batch)
 			write_int(f_out, protocol_version);
-		} else {
-			write_int(f_out, protocol_version);
-			remote_protocol = read_int(f_in);
-		}
+		remote_protocol = read_int(f_in);
 		if (protocol_version > remote_protocol)
 			protocol_version = remote_protocol;
 	}
@@ -59,7 +59,7 @@ void setup_protocol(int f_out,int f_in)
 	}
 	if (remote_protocol < MIN_PROTOCOL_VERSION
 	 || remote_protocol > MAX_PROTOCOL_VERSION) {
-		rprintf(FERROR,"protocol version mismatch - is your shell clean?\n");
+		rprintf(FERROR,"protocol version mismatch -- is your shell clean?\n");
 		rprintf(FERROR,"(see the rsync man page for an explanation)\n");
 		exit_cleanup(RERR_PROTOCOL);
 	}
@@ -78,6 +78,40 @@ void setup_protocol(int f_out,int f_in)
 		exit_cleanup(RERR_PROTOCOL);
 	}
 
+	if (protocol_version < 29) {
+		if (fuzzy_basis) {
+			rprintf(FERROR,
+			    "--fuzzy requires protocol 29 or higher"
+			    " (negotiated %d).\n",
+			    protocol_version);
+			exit_cleanup(RERR_PROTOCOL);
+		}
+
+		if (basis_dir_cnt && inplace) {
+			rprintf(FERROR,
+			    "%s with --inplace requires protocol 29 or higher"
+			    " (negotiated %d).\n",
+			    dest_option, protocol_version);
+			exit_cleanup(RERR_PROTOCOL);
+		}
+
+		if (basis_dir_cnt > 1) {
+			rprintf(FERROR,
+			    "Using more than one %s option requires protocol"
+			    " 29 or higher (negotiated %d).\n",
+			    dest_option, protocol_version);
+			exit_cleanup(RERR_PROTOCOL);
+		}
+
+		if (prune_empty_dirs) {
+			rprintf(FERROR,
+			    "--prune-empty-dirs requires protocol 29 or higher"
+			    " (negotiated %d).\n",
+			    protocol_version);
+			exit_cleanup(RERR_PROTOCOL);
+		}
+	}
+
 	if (am_server) {
 		if (!checksum_seed)
 			checksum_seed = time(NULL);