Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
-/* compatability routines for older rsync protocol versions */
+/**
+ * @file compat.c
+ *
+ * Compatibility routines for older rsync protocol versions.
+ **/
#include "rsync.h"
-extern int am_server;
-
-extern int preserve_links;
-extern int preserve_perms;
-extern int preserve_devices;
-extern int preserve_uid;
-extern int preserve_gid;
-extern int preserve_times;
-extern int always_checksum;
-extern int checksum_seed;
+int remote_protocol = 0;
-
-extern int remote_version;
extern int verbose;
+extern int am_server;
+extern int am_sender;
+extern int read_batch;
+extern int checksum_seed;
+extern int protocol_version;
void setup_protocol(int f_out,int f_in)
{
- if (remote_version == 0) {
- if (am_server) {
- remote_version = read_int(f_in);
- write_int(f_out,PROTOCOL_VERSION);
- } else {
- write_int(f_out,PROTOCOL_VERSION);
- remote_version = read_int(f_in);
- }
+ if (remote_protocol == 0) {
+ if (!read_batch)
+ write_int(f_out, protocol_version);
+ remote_protocol = read_int(f_in);
+ if (protocol_version > remote_protocol)
+ protocol_version = remote_protocol;
+ }
+ if (read_batch && remote_protocol > protocol_version) {
+ rprintf(FERROR, "The protocol version in the batch file is too new (%d > %d).\n",
+ remote_protocol, protocol_version);
+ exit_cleanup(RERR_PROTOCOL);
}
- if (remote_version < MIN_PROTOCOL_VERSION ||
- remote_version > MAX_PROTOCOL_VERSION) {
+ if (verbose > 3) {
+ rprintf(FINFO, "(%s) Protocol versions: remote=%d, negotiated=%d\n",
+ am_server? "Server" : "Client", remote_protocol, protocol_version);
+ }
+ if (remote_protocol < MIN_PROTOCOL_VERSION
+ || remote_protocol > MAX_PROTOCOL_VERSION) {
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);
- }
-
- if (remote_version >= 12) {
- if (am_server) {
+ }
+ if (remote_protocol < OLD_PROTOCOL_VERSION) {
+ rprintf(FINFO,"%s is very old version of rsync, upgrade recommended.\n",
+ am_server? "Client" : "Server");
+ }
+ if (protocol_version < MIN_PROTOCOL_VERSION) {
+ rprintf(FERROR, "--protocol must be at least %d on the %s.\n",
+ MIN_PROTOCOL_VERSION, am_server? "Server" : "Client");
+ exit_cleanup(RERR_PROTOCOL);
+ }
+ if (protocol_version > PROTOCOL_VERSION) {
+ rprintf(FERROR, "--protocol must be no more than %d on the %s.\n",
+ PROTOCOL_VERSION, am_server? "Server" : "Client");
+ exit_cleanup(RERR_PROTOCOL);
+ }
+
+ if (am_server) {
+ if (!checksum_seed)
checksum_seed = time(NULL);
- write_int(f_out,checksum_seed);
- } else {
- checksum_seed = read_int(f_in);
- }
+ write_int(f_out, checksum_seed);
+ } else {
+ checksum_seed = read_int(f_in);
}
-
- checksum_init();
}
-