| | 1 | /* |
| | 2 | * Compatibility routines for older rsync protocol versions. |
| | 3 | * |
| | 4 | * Copyright (C) Andrew Tridgell 1996 |
| | 5 | * Copyright (C) Paul Mackerras 1996 |
| | 6 | * Copyright (C) 2004, 2005, 2006 Wayne Davison |
| | 7 | * |
| | 8 | * This program is free software; you can redistribute it and/or modify |
| | 9 | * it under the terms of the GNU General Public License as published by |
| | 10 | * the Free Software Foundation; either version 2 of the License, or |
| | 11 | * (at your option) any later version. |
| | 12 | * |
| | 13 | * This program is distributed in the hope that it will be useful, |
| | 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| | 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| | 16 | * GNU General Public License for more details. |
| | 17 | * |
| | 18 | * You should have received a copy of the GNU General Public License along |
| | 19 | * with this program; if not, write to the Free Software Foundation, Inc., |
| | 20 | * 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. |
| | 21 | */ |
| | 22 | |
| | 23 | #include "rsync.h" |
| | 24 | |
| | 25 | int remote_protocol = 0; |
| | 26 | int flist_extra_cnt = 0; /* count of file-list extras that everyone gets */ |
| | 27 | |
| | 28 | extern int verbose; |
| | 29 | extern int am_server; |
| | 30 | extern int am_sender; |
| | 31 | extern int inplace; |
| | 32 | extern int fuzzy_basis; |
| | 33 | extern int read_batch; |
| | 34 | extern int max_delete; |
| | 35 | extern int checksum_seed; |
| | 36 | extern int basis_dir_cnt; |
| | 37 | extern int prune_empty_dirs; |
| | 38 | extern int protocol_version; |
| | 39 | extern char *dest_option; |
| | 40 | |
| | 41 | void setup_protocol(int f_out,int f_in) |
| | 42 | { |
| | 43 | if (am_sender) |
| | 44 | flist_extra_cnt += PTR_EXTRA_LEN; |
| | 45 | else |
| | 46 | flist_extra_cnt++; |
| | 47 | if (preserve_uid) |
| | 48 | preserve_uid = ++flist_extra_cnt; |
| | 49 | if (preserve_gid) |
| | 50 | preserve_gid = ++flist_extra_cnt; |
| | 51 | |
| | 52 | if (remote_protocol == 0) { |
| | 53 | if (!read_batch) |
| | 54 | write_int(f_out, protocol_version); |
| | 55 | remote_protocol = read_int(f_in); |
| | 56 | if (protocol_version > remote_protocol) |
| | 57 | protocol_version = remote_protocol; |
| | 58 | } |
| | 59 | if (read_batch && remote_protocol > protocol_version) { |
| | 60 | rprintf(FERROR, "The protocol version in the batch file is too new (%d > %d).\n", |
| | 61 | remote_protocol, protocol_version); |
| | 62 | exit_cleanup(RERR_PROTOCOL); |
| | 63 | } |
| | 64 | |
| | 65 | if (verbose > 3) { |
| | 66 | rprintf(FINFO, "(%s) Protocol versions: remote=%d, negotiated=%d\n", |
| | 67 | am_server? "Server" : "Client", remote_protocol, protocol_version); |
| | 68 | } |
| | 69 | if (remote_protocol < MIN_PROTOCOL_VERSION |
| | 70 | || remote_protocol > MAX_PROTOCOL_VERSION) { |
| | 71 | rprintf(FERROR,"protocol version mismatch -- is your shell clean?\n"); |
| | 72 | rprintf(FERROR,"(see the rsync man page for an explanation)\n"); |
| | 73 | exit_cleanup(RERR_PROTOCOL); |
| | 74 | } |
| | 75 | if (remote_protocol < OLD_PROTOCOL_VERSION) { |
| | 76 | rprintf(FINFO,"%s is very old version of rsync, upgrade recommended.\n", |
| | 77 | am_server? "Client" : "Server"); |
| | 78 | } |
| | 79 | if (protocol_version < MIN_PROTOCOL_VERSION) { |
| | 80 | rprintf(FERROR, "--protocol must be at least %d on the %s.\n", |
| | 81 | MIN_PROTOCOL_VERSION, am_server? "Server" : "Client"); |
| | 82 | exit_cleanup(RERR_PROTOCOL); |
| | 83 | } |
| | 84 | if (protocol_version > PROTOCOL_VERSION) { |
| | 85 | rprintf(FERROR, "--protocol must be no more than %d on the %s.\n", |
| | 86 | PROTOCOL_VERSION, am_server? "Server" : "Client"); |
| | 87 | exit_cleanup(RERR_PROTOCOL); |
| | 88 | } |
| | 89 | |
| | 90 | if (protocol_version < 30) { |
| | 91 | if (max_delete == 0 && am_sender) { |
| | 92 | rprintf(FERROR, |
| | 93 | "--max-delete=0 requires protocol 30 or higher" |
| | 94 | " (negotiated %d).\n", |
| | 95 | protocol_version); |
| | 96 | exit_cleanup(RERR_PROTOCOL); |
| | 97 | } |
| | 98 | } |
| | 99 | |
| | 100 | if (protocol_version < 29) { |
| | 101 | if (fuzzy_basis) { |
| | 102 | rprintf(FERROR, |
| | 103 | "--fuzzy requires protocol 29 or higher" |
| | 104 | " (negotiated %d).\n", |
| | 105 | protocol_version); |
| | 106 | exit_cleanup(RERR_PROTOCOL); |
| | 107 | } |
| | 108 | |
| | 109 | if (basis_dir_cnt && inplace) { |
| | 110 | rprintf(FERROR, |
| | 111 | "%s with --inplace requires protocol 29 or higher" |
| | 112 | " (negotiated %d).\n", |
| | 113 | dest_option, protocol_version); |
| | 114 | exit_cleanup(RERR_PROTOCOL); |
| | 115 | } |
| | 116 | |
| | 117 | if (basis_dir_cnt > 1) { |
| | 118 | rprintf(FERROR, |
| | 119 | "Using more than one %s option requires protocol" |
| | 120 | " 29 or higher (negotiated %d).\n", |
| | 121 | dest_option, protocol_version); |
| | 122 | exit_cleanup(RERR_PROTOCOL); |
| | 123 | } |
| | 124 | |
| | 125 | if (prune_empty_dirs) { |
| | 126 | rprintf(FERROR, |
| | 127 | "--prune-empty-dirs requires protocol 29 or higher" |
| | 128 | " (negotiated %d).\n", |
| | 129 | protocol_version); |
| | 130 | exit_cleanup(RERR_PROTOCOL); |
| | 131 | } |
| | 132 | } |
| | 133 | |
| | 134 | if (am_server) { |
| | 135 | if (!checksum_seed) |
| | 136 | checksum_seed = time(NULL); |
| | 137 | write_int(f_out, checksum_seed); |
| | 138 | } else { |
| | 139 | checksum_seed = read_int(f_in); |
| | 140 | } |
| | 141 | } |
Matt McCutchen's Web Site / rsync / rsync.git / blame_incremental