689 lines
15 KiB
C
689 lines
15 KiB
C
/*
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Copyright (C) by Andrew Tridgell 1996, 2000
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Copyright (C) Paul Mackerras 1996
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Copyright (C) 2001, 2002 by Martin Pool <mbp@samba.org>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#define False 0
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#define True 1
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#define BLOCK_SIZE 700
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#define RSYNC_RSH_ENV "RSYNC_RSH"
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#define RSYNC_RSH_IO_ENV "RSYNC_RSH_IO"
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#define RSYNC_NAME "rsync"
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#define RSYNCD_SYSCONF "/etc/rsyncd.conf"
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#define RSYNCD_USERCONF "rsyncd.conf"
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#define DEFAULT_LOCK_FILE "/var/run/rsyncd.lock"
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#define URL_PREFIX "rsync://"
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#define BACKUP_SUFFIX "~"
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/* a non-zero CHAR_OFFSET makes the rolling sum stronger, but is
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incompatible with older versions :-( */
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#define CHAR_OFFSET 0
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#define FLAG_DELETE (1<<0)
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#define SAME_MODE (1<<1)
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#define SAME_RDEV (1<<2)
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#define SAME_UID (1<<3)
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#define SAME_GID (1<<4)
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#define SAME_DIR (1<<5)
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#define SAME_NAME SAME_DIR
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#define LONG_NAME (1<<6)
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#define SAME_TIME (1<<7)
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/* update this if you make incompatible changes */
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#define PROTOCOL_VERSION 27
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/* We refuse to interoperate with versions that are not in this range.
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* Note that we assume we'll work with later versions: the onus is on
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* people writing them to make sure that they don't send us anything
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* we won't understand.
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*
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* Interoperation with old but supported protocol versions
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* should cause a warning to be printed. At a future date
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* the old protocol will become the minimum and
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* compatibility code removed.
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*
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* There are two possible explanations for the limit at
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* MAX_PROTOCOL_VERSION: either to allow new major-rev versions that
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* do not interoperate with us, and (more likely) so that we can
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* detect an attempt to connect rsync to a non-rsync server, which is
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* unlikely to begin by sending a byte between MIN_PROTOCL_VERSION and
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* MAX_PROTOCOL_VERSION. */
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#define MIN_PROTOCOL_VERSION 17
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#define OLD_PROTOCOL_VERSION 20
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#define MAX_PROTOCOL_VERSION 40
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#define RSYNC_PORT 873
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#define SPARSE_WRITE_SIZE (1024)
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#define WRITE_SIZE (32*1024)
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#define CHUNK_SIZE (32*1024)
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#define MAX_MAP_SIZE (256*1024)
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#define IO_BUFFER_SIZE (4092)
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#define IOERR_GENERAL (1<<0) /* For backward compatibility, this must == 1 */
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#define IOERR_VANISHED (1<<1)
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#define MAX_ARGS 1000
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#define MPLEX_BASE 7
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#define NO_EXCLUDES 0
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#define SERVER_EXCLUDES 1
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#define ALL_EXCLUDES 2
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#define MISSING_OK 0
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#define MISSING_FATAL 1
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#define ADD_INCLUDE 1
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#define ADD_EXCLUDE 0
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/* Log values. I *think* what these mean is: FLOG goes to the server
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* logfile; FERROR and FINFO try to end up on the client, with
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* different levels of filtering. */
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enum logcode {FNONE=0, FERROR=1, FINFO=2, FLOG=3 };
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#include "errcode.h"
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#include "config.h"
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/* The default RSYNC_RSH is always set in config.h. */
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#include <sys/types.h>
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#include <stdio.h>
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#include <stddef.h>
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#ifdef HAVE_SYS_PARAM_H
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#include <sys/param.h>
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#endif
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#ifdef HAVE_STDLIB_H
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#include <stdlib.h>
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#endif
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#if defined(HAVE_MALLOC_H) && (defined(HAVE_MALLINFO) || !defined(HAVE_STDLIB_H))
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#include <malloc.h>
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#endif
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#ifdef HAVE_SYS_SOCKET_H
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#include <sys/socket.h>
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#endif
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#ifdef HAVE_STRING_H
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#include <string.h>
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#endif
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#ifdef TIME_WITH_SYS_TIME
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#include <sys/time.h>
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#include <time.h>
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#else
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#ifdef HAVE_SYS_TIME_H
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#include <sys/time.h>
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#else
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#include <time.h>
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#endif
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#endif
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#ifdef HAVE_FCNTL_H
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#include <fcntl.h>
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#else
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#ifdef HAVE_SYS_FCNTL_H
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#include <sys/fcntl.h>
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#endif
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#endif
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#include <sys/stat.h>
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#ifdef HAVE_SYS_IOCTL_H
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#include <sys/ioctl.h>
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#endif
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#ifdef HAVE_SYS_FILIO_H
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#include <sys/filio.h>
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#endif
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#include <signal.h>
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#ifdef HAVE_SYS_WAIT_H
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#include <sys/wait.h>
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#endif
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#ifdef HAVE_CTYPE_H
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#include <ctype.h>
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#endif
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#ifdef HAVE_GRP_H
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#include <grp.h>
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#endif
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#include <errno.h>
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#ifdef HAVE_UTIME_H
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#include <utime.h>
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#endif
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#ifdef HAVE_SYS_SELECT_H
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#include <sys/select.h>
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#endif
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#ifdef HAVE_SYS_MODE_H
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/* apparently AIX needs this for S_ISLNK */
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#ifndef S_ISLNK
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#include <sys/mode.h>
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#endif
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#endif
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#ifdef HAVE_GLOB_H
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#include <glob.h>
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#endif
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/* these are needed for the uid/gid mapping code */
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#include <pwd.h>
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#include <grp.h>
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#include <stdarg.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <netdb.h>
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#include <syslog.h>
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#include <sys/file.h>
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#if HAVE_DIRENT_H
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# include <dirent.h>
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#else
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# define dirent direct
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# if HAVE_SYS_NDIR_H
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# include <sys/ndir.h>
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# endif
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# if HAVE_SYS_DIR_H
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# include <sys/dir.h>
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# endif
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# if HAVE_NDIR_H
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# include <ndir.h>
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# endif
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#endif
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#ifdef HAVE_COMPAT_H
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#include <compat.h>
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#endif
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#include <assert.h>
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#define BOOL int
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#ifndef uchar
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#define uchar unsigned char
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#endif
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#if HAVE_UNSIGNED_CHAR
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#define schar signed char
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#else
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#define schar char
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#endif
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#ifndef int32
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#if (SIZEOF_INT == 4)
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#define int32 int
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#elif (SIZEOF_LONG == 4)
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#define int32 long
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#elif (SIZEOF_SHORT == 4)
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#define int32 short
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#else
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/* I hope this works */
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#define int32 int
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#define LARGE_INT32
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#endif
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#endif
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#ifndef uint32
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#define uint32 unsigned int32
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#endif
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#if HAVE_OFF64_T
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#define OFF_T off64_t
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#define STRUCT_STAT struct stat64
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#else
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#define OFF_T off_t
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#define STRUCT_STAT struct stat
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#endif
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#if HAVE_OFF64_T
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#define int64 off64_t
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#elif (SIZEOF_LONG == 8)
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#define int64 long
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#elif (SIZEOF_INT == 8)
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#define int64 int
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#elif HAVE_LONGLONG
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#define int64 long long
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#else
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/* As long as it gets... */
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#define int64 off_t
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#define NO_INT64
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#endif
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#if (SIZEOF_LONG == 8)
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#define uint64 unsigned long
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#elif (SIZEOF_INT == 8)
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#define uint64 unsigned int
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#elif HAVE_LONGLONG
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#define uint64 unsigned long long
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#else
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/* As long as it gets... */
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#define uint64 unsigned off_t
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#endif
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/* Starting from protocol version 26, we always use 64-bit
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* ino_t and dev_t internally, even if this platform does not
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* allow files to have 64-bit inums. That's because the
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* receiver needs to find duplicate (dev,ino) tuples to detect
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* hardlinks, and it might have files coming from a platform
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* that has 64-bit inums.
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*
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* The only exception is if we're on a platform with no 64-bit type at
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* all.
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*
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* Because we use read_longint() to get these off the wire, if you
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* transfer devices or hardlinks with dev or inum > 2**32 to a machine
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* with no 64-bit types then you will get an overflow error. Probably
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* not many people have that combination of machines, and you can
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* avoid it by not preserving hardlinks or not transferring device
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* nodes. It's not clear that any other behaviour is better.
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*
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* Note that if you transfer devices from a 64-bit-devt machine (say,
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* Solaris) to a 32-bit-devt machine (say, Linux-2.2/x86) then the
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* device numbers will be truncated. But it's a kind of silly thing
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* to do anyhow.
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*
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* FIXME: In future, we should probable split the device number into
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* major/minor, and transfer the two parts as 32-bit ints. That gives
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* you somewhat more of a chance that they'll come from a big machine
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* to a little one in a useful way.
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*
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* FIXME: Really we need an unsigned type, and we perhaps ought to
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* cope with platforms on which this is an unsigned int or even a
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* struct. Later.
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*/
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#define INO64_T uint64
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#define DEV64_T uint64
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#ifndef MIN
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#define MIN(a,b) ((a)<(b)?(a):(b))
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#endif
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#ifndef MAX
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#define MAX(a,b) ((a)>(b)?(a):(b))
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#endif
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#ifndef MAXHOSTNAMELEN
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#define MAXHOSTNAMELEN 256
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#endif
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/* the length of the md4 checksum */
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#define MD4_SUM_LENGTH 16
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#define SUM_LENGTH 16
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#define SHORT_SUM_LENGTH 2
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#define BLOCKSUM_BIAS 10
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#ifndef MAXPATHLEN
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#define MAXPATHLEN 1024
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#endif
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#ifndef NAME_MAX
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#define NAME_MAX 255
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#endif
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#ifndef INADDR_NONE
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#define INADDR_NONE 0xffffffff
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#endif
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#ifndef IN_LOOPBACKNET
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#define IN_LOOPBACKNET 127
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#endif
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struct file_struct {
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unsigned flags;
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time_t modtime;
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OFF_T length;
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mode_t mode;
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INO64_T inode;
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/** Device this file lives upon */
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DEV64_T dev;
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/** If this is a device node, the device number. */
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DEV64_T rdev;
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uid_t uid;
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gid_t gid;
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char *basename;
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char *dirname;
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char *basedir;
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char *link;
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char *sum;
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};
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#define ARENA_SIZE (32 * 1024)
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struct string_area {
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char *base;
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char *end;
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char *current;
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struct string_area *next;
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};
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struct file_list {
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int count;
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int malloced;
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struct file_struct **files;
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struct string_area *string_area;
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};
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struct sum_buf {
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OFF_T offset; /**< offset in file of this chunk */
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int len; /**< length of chunk of file */
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int i; /**< index of this chunk */
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uint32 sum1; /**< simple checksum */
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char sum2[SUM_LENGTH]; /**< checksum */
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};
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struct sum_struct {
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OFF_T flength; /**< total file length */
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size_t count; /**< how many chunks */
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size_t remainder; /**< flength % block_length */
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size_t blength; /**< block_length */
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size_t s2length; /**< sum2_length */
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struct sum_buf *sums; /**< points to info for each chunk */
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};
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struct map_struct {
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char *p; /* Window pointer */
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int fd; /* File Descriptor */
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int p_size; /* Window size at allocation */
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int p_len; /* Window size after fill */
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/* p_size and p_len could be
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* consolodated by using a local
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* variable in map_ptr() */
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int status; /* first errno from read errors */
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OFF_T file_size; /* File size (from stat) */
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OFF_T p_offset; /* Window start */
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OFF_T p_fd_offset; /* offset of cursor in fd ala lseek */
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};
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#define MATCHFLG_WILD (1<<0) /* pattern has '*', '[', and/or '?' */
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#define MATCHFLG_WILD2 (1<<1) /* pattern has '**' */
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#define MATCHFLG_WILD2_PREFIX (1<<2) /* pattern starts with '**' */
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#define MATCHFLG_ABS_PATH (1<<3) /* path-match on absolute path */
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struct exclude_struct {
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char *pattern;
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int match_flags;
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int include;
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int directory;
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int slash_cnt;
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};
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struct stats {
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int64 total_size;
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int64 total_transferred_size;
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int64 total_written;
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int64 total_read;
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int64 literal_data;
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int64 matched_data;
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int flist_size;
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int num_files;
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int num_transferred_files;
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};
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/* we need this function because of the silly way in which duplicate
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entries are handled in the file lists - we can't change this
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without breaking existing versions */
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static inline int flist_up(struct file_list *flist, int i)
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{
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while (!flist->files[i]->basename) i++;
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return i;
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}
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#include "byteorder.h"
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#include "lib/mdfour.h"
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#include "lib/wildmatch.h"
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#include "lib/permstring.h"
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#include "lib/addrinfo.h"
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#include "proto.h"
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/* We have replacement versions of these if they're missing. */
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#ifndef HAVE_ASPRINTF
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int asprintf(char **ptr, const char *format, ...);
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#endif
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#ifndef HAVE_VASPRINTF
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int vasprintf(char **ptr, const char *format, va_list ap);
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#endif
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#if !defined(HAVE_VSNPRINTF) || !defined(HAVE_C99_VSNPRINTF)
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#define vsnprintf rsync_vsnprintf
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int vsnprintf(char *str, size_t count, const char *fmt, va_list args);
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#endif
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#if !defined(HAVE_SNPRINTF) || !defined(HAVE_C99_VSNPRINTF)
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#define snprintf rsync_snprintf
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int snprintf(char *str,size_t count,const char *fmt,...);
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#endif
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#if !HAVE_STRERROR
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extern char *sys_errlist[];
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#define strerror(i) sys_errlist[i]
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#endif
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#ifndef HAVE_STRCHR
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# define strchr index
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# define strrchr rindex
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#endif
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#ifndef HAVE_ERRNO_DECL
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extern int errno;
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#endif
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#define SUPPORT_LINKS HAVE_READLINK
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#define SUPPORT_HARD_LINKS HAVE_LINK
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/* This could be bad on systems which have no lchown and where chown
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* follows symbollic links. On such systems it might be better not to
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* try to chown symlinks at all. */
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#ifndef HAVE_LCHOWN
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#define lchown chown
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#endif
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#define SIGNAL_CAST (RETSIGTYPE (*)())
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#ifndef EWOULDBLOCK
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#define EWOULDBLOCK EAGAIN
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#endif
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#ifndef STDIN_FILENO
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#define STDIN_FILENO 0
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#endif
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#ifndef STDOUT_FILENO
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#define STDOUT_FILENO 1
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#endif
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#ifndef STDERR_FILENO
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#define STDERR_FILENO 2
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#endif
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#ifndef S_IWUSR
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#define S_IWUSR 0200
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#endif
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#ifndef ACCESSPERMS
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#define ACCESSPERMS 0777
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#endif
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#ifndef S_ISVTX
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#define S_ISVTX 0
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#endif
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#define CHMOD_BITS (S_ISUID | S_ISGID | S_ISVTX | ACCESSPERMS)
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#ifndef _S_IFMT
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#define _S_IFMT 0170000
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#endif
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#ifndef _S_IFLNK
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#define _S_IFLNK 0120000
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#endif
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#ifndef S_ISLNK
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#define S_ISLNK(mode) (((mode) & (_S_IFMT)) == (_S_IFLNK))
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#endif
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#ifndef S_ISBLK
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#define S_ISBLK(mode) (((mode) & (_S_IFMT)) == (_S_IFBLK))
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#endif
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#ifndef S_ISCHR
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#define S_ISCHR(mode) (((mode) & (_S_IFMT)) == (_S_IFCHR))
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#endif
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#ifndef S_ISSOCK
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#ifdef _S_IFSOCK
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#define S_ISSOCK(mode) (((mode) & (_S_IFMT)) == (_S_IFSOCK))
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#else
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#define S_ISSOCK(mode) (0)
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#endif
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#endif
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#ifndef S_ISFIFO
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#ifdef _S_IFIFO
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#define S_ISFIFO(mode) (((mode) & (_S_IFMT)) == (_S_IFIFO))
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#else
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#define S_ISFIFO(mode) (0)
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#endif
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#endif
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#ifndef S_ISDIR
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#define S_ISDIR(mode) (((mode) & (_S_IFMT)) == (_S_IFDIR))
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#endif
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#ifndef S_ISREG
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#define S_ISREG(mode) (((mode) & (_S_IFMT)) == (_S_IFREG))
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#endif
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/* work out what fcntl flag to use for non-blocking */
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#ifdef O_NONBLOCK
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# define NONBLOCK_FLAG O_NONBLOCK
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#elif defined(SYSV)
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# define NONBLOCK_FLAG O_NDELAY
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#else
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# define NONBLOCK_FLAG FNDELAY
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#endif
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#ifndef INADDR_LOOPBACK
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#define INADDR_LOOPBACK 0x7f000001
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#endif
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#ifndef INADDR_NONE
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#define INADDR_NONE 0xffffffff
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#endif
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#define IS_DEVICE(mode) (S_ISCHR(mode) || S_ISBLK(mode) || S_ISSOCK(mode) || S_ISFIFO(mode))
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/* Initial mask on permissions given to temporary files. Mask off setuid
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bits and group access because of potential race-condition security
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holes, and mask other access because mode 707 is bizarre */
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#define INITACCESSPERMS 0700
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/* handler for null strings in printf format */
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#define NS(s) ((s)?(s):"<NULL>")
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|
#if !defined(__GNUC__) || defined(APPLE)
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|
/* Apparently the OS X port of gcc gags on __attribute__.
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|
*
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|
* <http://www.opensource.apple.com/bugs/X/gcc/2512150.html> */
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#define __attribute__(x)
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#endif
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/* Convenient wrappers for malloc and realloc. Use them. */
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#define new(type) ((type *)malloc(sizeof(type)))
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#define new_array(type, num) ((type *)_new_array(sizeof(type), (num)))
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#define realloc_array(ptr, type, num) ((type *)_realloc_array((ptr), sizeof(type), (num)))
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|
|
|
/* use magic gcc attributes to catch format errors */
|
|
void rprintf(enum logcode , const char *, ...)
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|
__attribute__((format (printf, 2, 3)))
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|
;
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|
|
/* This is just like rprintf, but it also tries to print some
|
|
* representation of the error code. Normally errcode = errno. */
|
|
void rsyserr(enum logcode, int, const char *, ...)
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|
__attribute__((format (printf, 3, 4)))
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|
;
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|
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#ifdef REPLACE_INET_NTOA
|
|
#define inet_ntoa rep_inet_ntoa
|
|
#endif
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|
|
|
/* Make sure that the O_BINARY flag is defined. */
|
|
#ifndef O_BINARY
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|
#define O_BINARY 0
|
|
#endif
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|
|
|
#ifndef HAVE_STRLCPY
|
|
size_t strlcpy(char *d, const char *s, size_t bufsize);
|
|
#endif
|
|
|
|
#ifndef HAVE_STRLCAT
|
|
size_t strlcat(char *d, const char *s, size_t bufsize);
|
|
#endif
|
|
|
|
#ifndef WEXITSTATUS
|
|
#define WEXITSTATUS(stat) ((int)(((stat)>>8)&0xFF))
|
|
#endif
|
|
|
|
#define exit_cleanup(code) _exit_cleanup(code, __FILE__, __LINE__)
|
|
|
|
|
|
extern int verbose;
|
|
|
|
#ifndef HAVE_INET_NTOP
|
|
const char *
|
|
inet_ntop(int af, const void *src, char *dst, size_t size);
|
|
#endif /* !HAVE_INET_NTOP */
|
|
|
|
#ifndef HAVE_INET_PTON
|
|
int inet_pton(int af, const char *src, void *dst);
|
|
#endif
|
|
|
|
#ifdef MAINTAINER_MODE
|
|
const char *get_panic_action(void);
|
|
#endif
|
|
|
|
#define UNUSED(x) x __attribute__((__unused__))
|
|
|
|
extern const char *io_write_phase, *io_read_phase;
|