/* Copyright (C) by Andrew Tridgell 1996, 2000 Copyright (C) Paul Mackerras 1996 Copyright (C) 2001, 2002 by Martin Pool 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., 675 Mass Ave, Cambridge, MA 02139, USA. */ #define False 0 #define True 1 #define BLOCK_SIZE 700 #define RSYNC_RSH_ENV "RSYNC_RSH" #define RSYNC_NAME "rsync" #define RSYNCD_CONF "/etc/rsyncd.conf" #define DEFAULT_LOCK_FILE "/var/run/rsyncd.lock" #define URL_PREFIX "rsync://" #define BACKUP_SUFFIX "~" /* a non-zero CHAR_OFFSET makes the rolling sum stronger, but is incompatible with older versions :-( */ #define CHAR_OFFSET 0 #define FLAG_DELETE (1<<0) #define SAME_MODE (1<<1) #define SAME_RDEV (1<<2) #define SAME_UID (1<<3) #define SAME_GID (1<<4) #define SAME_DIR (1<<5) #define SAME_NAME SAME_DIR #define LONG_NAME (1<<6) #define SAME_TIME (1<<7) /* update this if you make incompatible changes */ #define PROTOCOL_VERSION 26 /* We refuse to interoperate with versions that are not in this range. * Note that we assume we'll work with later versions: the onus is on * people writing them to make sure that they don't send us anything * we won't understand. * * There are two possible explanations for the limit at thirty: either * to allow new major-rev versions that do not interoperate with us, * and (more likely) so that we can detect an attempt to connect rsync * to a non-rsync server, which is unlikely to begin by sending a byte * between 15 and 30. */ #define MIN_PROTOCOL_VERSION 15 #define MAX_PROTOCOL_VERSION 30 #define RSYNC_PORT 873 #define SPARSE_WRITE_SIZE (1024) #define WRITE_SIZE (32*1024) #define CHUNK_SIZE (32*1024) #define MAX_MAP_SIZE (256*1024) #define IO_BUFFER_SIZE (4092) #define MAX_ARGS 1000 #define MPLEX_BASE 7 /* Log values. I *think* what these mean is: FLOG goes to the server * logfile; FERROR and FINFO try to end up on the client, with * different levels of filtering. */ enum logcode {FNONE=0, FERROR=1, FINFO=2, FLOG=3 }; #include "errcode.h" #include "config.h" /* The default RSYNC_RSH is always set in config.h, either to "remsh", * "rsh", or otherwise something specified by the user. HAVE_REMSH * controls parameter munging for HP/UX, etc. */ #include #ifdef HAVE_UNISTD_H #include #endif #include #include #ifdef HAVE_SYS_PARAM_H #include #endif #ifdef HAVE_STDLIB_H #include #endif #ifdef HAVE_SYS_SOCKET_H #include #endif #ifdef HAVE_STRING_H #include #endif #ifdef HAVE_MALLOC_H #include #endif #ifdef TIME_WITH_SYS_TIME #include #include #else #ifdef HAVE_SYS_TIME_H #include #else #include #endif #endif #ifdef HAVE_FCNTL_H #include #else #ifdef HAVE_SYS_FCNTL_H #include #endif #endif #include #ifdef HAVE_SYS_IOCTL_H #include #endif #ifdef HAVE_SYS_FILIO_H #include #endif #include #ifdef HAVE_SYS_WAIT_H #include #endif #ifdef HAVE_CTYPE_H #include #endif #ifdef HAVE_GRP_H #include #endif #include #ifdef HAVE_UTIME_H #include #endif #ifdef HAVE_SYS_SELECT_H #include #endif #ifdef HAVE_SYS_MODE_H /* apparently AIX needs this for S_ISLNK */ #ifndef S_ISLNK #include #endif #endif #ifdef HAVE_FNMATCH #include #else #include "lib/fnmatch.h" #endif #ifdef HAVE_GLOB_H #include #endif #ifdef HAVE_MALLOC_H # include #endif /* these are needed for the uid/gid mapping code */ #include #include #include #include #include #include #include #include #if HAVE_DIRENT_H # include #else # define dirent direct # if HAVE_SYS_NDIR_H # include # endif # if HAVE_SYS_DIR_H # include # endif # if HAVE_NDIR_H # include # endif #endif #ifdef HAVE_COMPAT_H #include #endif #include #define BOOL int #ifndef uchar #define uchar unsigned char #endif #if HAVE_UNSIGNED_CHAR #define schar signed char #else #define schar char #endif #ifndef int32 #if (SIZEOF_INT == 4) #define int32 int #elif (SIZEOF_LONG == 4) #define int32 long #elif (SIZEOF_SHORT == 4) #define int32 short #else /* I hope this works */ #define int32 int #define LARGE_INT32 #endif #endif #ifndef uint32 #define uint32 unsigned int32 #endif #if HAVE_OFF64_T #define OFF_T off64_t #define STRUCT_STAT struct stat64 #else #define OFF_T off_t #define STRUCT_STAT struct stat #endif #if HAVE_OFF64_T #define int64 off64_t #elif (SIZEOF_LONG == 8) #define int64 long #elif (SIZEOF_INT == 8) #define int64 int #elif HAVE_LONGLONG #define int64 long long #else /* As long as it gets... */ #define int64 off_t #define NO_INT64 #endif /* Starting from protocol version 26, we always use 64-bit * ino_t and dev_t internally, even if this platform does not * allow files to have 64-bit inums. That's because the * receiver needs to find duplicate (dev,ino) tuples to detect * hardlinks, and it might have files coming from a platform * that has 64-bit inums. * * The only exception is if we're on a platform with no 64-bit type at * all. * * Because we use read_longint() to get these off the wire, if you * transfer devices or hardlinks with dev or inum > 2**32 to a machine * with no 64-bit types then you will get an overflow error. Probably * not many people have that combination of machines, and you can * avoid it by not preserving hardlinks or not transferring device * nodes. It's not clear that any other behaviour is better. * * Note that if you transfer devices from a 64-bit-devt machine (say, * Solaris) to a 32-bit-devt machine (say, Linux-2.2/x86) then the * device numbers will be truncated. But it's a kind of silly thing * to do anyhow. * * FIXME: In future, we should probable split the device number into * major/minor, and transfer the two parts as 32-bit ints. That gives * you somewhat more of a chance that they'll come from a big machine * to a little one in a useful way. * * FIXME: Really we need an unsigned type, and we perhaps ought to * cope with platforms on which this is an unsigned int or even a * struct. Later. */ #define INO64_T int64 #define DEV64_T int64 #ifndef MIN #define MIN(a,b) ((a)<(b)?(a):(b)) #endif #ifndef MAX #define MAX(a,b) ((a)>(b)?(a):(b)) #endif #ifndef MAXHOSTNAMELEN #define MAXHOSTNAMELEN 256 #endif /* the length of the md4 checksum */ #define MD4_SUM_LENGTH 16 #define SUM_LENGTH 16 #ifndef MAXPATHLEN #define MAXPATHLEN 1024 #endif #ifndef INADDR_NONE #define INADDR_NONE 0xffffffff #endif struct file_struct { unsigned flags; time_t modtime; OFF_T length; mode_t mode; INO64_T inode; /** Device this file lives upon */ DEV64_T dev; /** If this is a device node, the device number. */ DEV64_T rdev; uid_t uid; gid_t gid; char *basename; char *dirname; char *basedir; char *link; char *sum; }; #define ARENA_SIZE (32 * 1024) struct string_area { char *base; char *end; char *current; struct string_area *next; }; struct file_list { int count; int malloced; struct file_struct **files; struct string_area *string_area; }; struct sum_buf { OFF_T offset; /* offset in file of this chunk */ int len; /* length of chunk of file */ int i; /* index of this chunk */ uint32 sum1; /* simple checksum */ char sum2[SUM_LENGTH]; /* checksum */ }; struct sum_struct { OFF_T flength; /* total file length */ size_t count; /* how many chunks */ size_t remainder; /* flength % block_length */ size_t n; /* block_length */ struct sum_buf *sums; /* points to info for each chunk */ }; struct map_struct { char *p; int fd,p_size,p_len; OFF_T file_size, p_offset, p_fd_offset; }; struct exclude_struct { char *pattern; int regular_exp; int fnmatch_flags; int include; int directory; int local; }; struct stats { int64 total_size; int64 total_transferred_size; int64 total_written; int64 total_read; int64 literal_data; int64 matched_data; int flist_size; int num_files; int num_transferred_files; }; /* we need this function because of the silly way in which duplicate entries are handled in the file lists - we can't change this without breaking existing versions */ static inline int flist_up(struct file_list *flist, int i) { while (!flist->files[i]->basename) i++; return i; } #include "byteorder.h" #include "lib/mdfour.h" #include "lib/permstring.h" #include "lib/addrinfo.h" #include "proto.h" /* We have replacement versions of these if they're missing. */ #ifndef HAVE_ASPRINTF int asprintf(char **ptr, const char *format, ...); #endif #ifndef HAVE_VASPRINTF int vasprintf(char **ptr, const char *format, va_list ap); #endif #if !defined(HAVE_VSNPRINTF) && !defined(HAVE_C99_VSNPRINTF) int vsnprintf (char *str, size_t count, const char *fmt, va_list args); #endif #if !defined(HAVE_SNPRINTF) && !defined(HAVE_C99_VSNPRINTF) int snprintf(char *str,size_t count,const char *fmt,...); #endif #if !HAVE_STRERROR extern char *sys_errlist[]; #define strerror(i) sys_errlist[i] #endif #ifndef HAVE_STRCHR # define strchr index # define strrchr rindex #endif #ifndef HAVE_ERRNO_DECL extern int errno; #endif #define SUPPORT_LINKS HAVE_READLINK #define SUPPORT_HARD_LINKS HAVE_LINK /* This could be bad on systems which have no lchown and where chown * follows symbollic links. On such systems it might be better not to * try to chown symlinks at all. */ #ifndef HAVE_LCHOWN #define lchown chown #endif #define SIGNAL_CAST (RETSIGTYPE (*)()) #ifndef EWOULDBLOCK #define EWOULDBLOCK EAGAIN #endif #ifndef STDIN_FILENO #define STDIN_FILENO 0 #endif #ifndef STDOUT_FILENO #define STDOUT_FILENO 1 #endif #ifndef STDERR_FILENO #define STDERR_FILENO 2 #endif #ifndef S_IWUSR #define S_IWUSR 0200 #endif #ifndef _S_IFMT #define _S_IFMT 0170000 #endif #ifndef _S_IFLNK #define _S_IFLNK 0120000 #endif #ifndef S_ISLNK #define S_ISLNK(mode) (((mode) & (_S_IFMT)) == (_S_IFLNK)) #endif #ifndef S_ISBLK #define S_ISBLK(mode) (((mode) & (_S_IFMT)) == (_S_IFBLK)) #endif #ifndef S_ISCHR #define S_ISCHR(mode) (((mode) & (_S_IFMT)) == (_S_IFCHR)) #endif #ifndef S_ISSOCK #ifdef _S_IFSOCK #define S_ISSOCK(mode) (((mode) & (_S_IFMT)) == (_S_IFSOCK)) #else #define S_ISSOCK(mode) (0) #endif #endif #ifndef S_ISFIFO #ifdef _S_IFIFO #define S_ISFIFO(mode) (((mode) & (_S_IFMT)) == (_S_IFIFO)) #else #define S_ISFIFO(mode) (0) #endif #endif #ifndef S_ISDIR #define S_ISDIR(mode) (((mode) & (_S_IFMT)) == (_S_IFDIR)) #endif #ifndef S_ISREG #define S_ISREG(mode) (((mode) & (_S_IFMT)) == (_S_IFREG)) #endif /* work out what fcntl flag to use for non-blocking */ #ifdef O_NONBLOCK # define NONBLOCK_FLAG O_NONBLOCK #elif defined(SYSV) # define NONBLOCK_FLAG O_NDELAY #else # define NONBLOCK_FLAG FNDELAY #endif #ifndef INADDR_LOOPBACK #define INADDR_LOOPBACK 0x7f000001 #endif #ifndef INADDR_NONE #define INADDR_NONE 0xffffffff #endif #define IS_DEVICE(mode) (S_ISCHR(mode) || S_ISBLK(mode) || S_ISSOCK(mode) || S_ISFIFO(mode)) #ifndef ACCESSPERMS #define ACCESSPERMS 0777 #endif /* Initial mask on permissions given to temporary files. Mask off setuid bits and group access because of potential race-condition security holes, and mask other access because mode 707 is bizarre */ #define INITACCESSPERMS 0700 /* handler for null strings in printf format */ #define NS(s) ((s)?(s):"") #if !defined(__GNUC__) || defined(APPLE) /* Apparently the OS X port of gcc gags on __attribute__. * * */ #define __attribute__(x) #endif /* use magic gcc attributes to catch format errors */ void rprintf(enum logcode , const char *, ...) __attribute__((format (printf, 2, 3))) ; /* 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 *, ...) __attribute__((format (printf, 3, 4))) ; #ifdef REPLACE_INET_NTOA #define inet_ntoa rep_inet_ntoa #endif #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 isc_net_pton(int af, const char *src, void *dst); #endif #define UNUSED(x) x __attribute__((__unused__))