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/*
* Compatibility routines for older rsync protocol versions.
*
* Copyright (C) Andrew Tridgell 1996
* Copyright (C) Paul Mackerras 1996
* Copyright (C) 2004, 2005, 2006 Wayne Davison
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "rsync.h"
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 max_delete;
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 (!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 (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_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 (protocol_version < 30) {
if (max_delete == 0 && am_sender) {
rprintf(FERROR,
"--max-delete=0 requires protocol 30 or higher"
" (negotiated %d).\n",
protocol_version);
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);
write_int(f_out, checksum_seed);
} else {
checksum_seed = read_int(f_in);
}
}
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