/*
- Copyright (C) Andrew Tridgell 1996
+ Copyright (C) by Andrew Tridgell 1996, 2000
Copyright (C) Paul Mackerras 1996
+ Copyright (C) 2001, 2002 by Martin Pool <mbp@samba.org>
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
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_RSH "rsh"
+
#define RSYNC_NAME "rsync"
+#define RSYNCD_SYSCONF "/etc/rsyncd.conf"
+#define RSYNCD_USERCONF "rsyncd.conf"
+
+#define DEFAULT_LOCK_FILE "/var/run/rsyncd.lock"
+#define URL_PREFIX "rsync://"
+
#define BACKUP_SUFFIX "~"
-#define FILE_VALID 1
+/* 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_DEV (1<<2)
+#define SAME_RDEV (1<<2)
#define SAME_UID (1<<3)
#define SAME_GID (1<<4)
#define SAME_DIR (1<<5)
#define SAME_TIME (1<<7)
/* update this if you make incompatible changes */
-#define PROTOCOL_VERSION 11
-#define MIN_PROTOCOL_VERSION 10
-#define MAX_PROTOCOL_VERSION 20
-
-/* block size to write files in */
-#define WRITE_BLOCK_SIZE (32*1024)
-#define MAX_MAP_SIZE (4*1024*1024)
-
-#define BLOCKING_TIMEOUT 10
-
-/* do we try to create sparse files */
-#define SPARSE_FILES 1
+#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.
+ *
+ * Interoperation with old but supported protocol versions
+ * should cause a warning to be printed. At a future date
+ * the old protocol will become the minimum and
+ * compatibility code removed.
+ *
+ * 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 OLD_PROTOCOL_VERSION 20
+#define MAX_PROTOCOL_VERSION 40
+
+#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 <sys/types.h>
+
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <stdio.h>
+#include <stddef.h>
#ifdef HAVE_SYS_PARAM_H
#include <sys/param.h>
#endif
-#ifdef STDC_HEADERS
-# include <stdlib.h>
-# include <string.h>
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
#endif
-#ifdef HAVE_COMPAT_H
-#include <compat.h>
+#ifdef HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
+
+#ifdef HAVE_STRING_H
+#include <string.h>
#endif
#ifdef HAVE_MALLOC_H
#endif
#include <errno.h>
-#ifdef HAVE_MMAP
-#include <sys/mman.h>
-#endif
-
#ifdef HAVE_UTIME_H
#include <utime.h>
#endif
+#ifdef HAVE_SYS_SELECT_H
+#include <sys/select.h>
+#endif
+
+#ifdef HAVE_SYS_MODE_H
+/* apparently AIX needs this for S_ISLNK */
+#ifndef S_ISLNK
+#include <sys/mode.h>
+#endif
+#endif
+
#ifdef HAVE_FNMATCH
#include <fnmatch.h>
#else
#include "lib/fnmatch.h"
#endif
-#ifdef HAVE_GETOPT_LONG
-#include <getopt.h>
-#else
-#include "lib/getopt.h"
+#ifdef HAVE_GLOB_H
+#include <glob.h>
#endif
+#ifdef HAVE_MALLOC_H
+# include <malloc.h>
+#endif
-#ifndef S_ISLNK
-#define S_ISLNK(mode) (((mode) & S_IFLNK) == S_IFLNK)
+/* these are needed for the uid/gid mapping code */
+#include <pwd.h>
+#include <grp.h>
+
+#include <stdarg.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+#include <syslog.h>
+#include <sys/file.h>
+
+#if HAVE_DIRENT_H
+# include <dirent.h>
+#else
+# define dirent direct
+# if HAVE_SYS_NDIR_H
+# include <sys/ndir.h>
+# endif
+# if HAVE_SYS_DIR_H
+# include <sys/dir.h>
+# endif
+# if HAVE_NDIR_H
+# include <ndir.h>
+# endif
+#endif
+
+#ifdef HAVE_COMPAT_H
+#include <compat.h>
#endif
+#include <assert.h>
+
+
+#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
#define int32 long
#elif (SIZEOF_SHORT == 4)
#define int32 short
+#else
+/* I hope this works */
+#define int32 int
+#define LARGE_INT32
#endif
#endif
#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
+#define uint64 unsigned off64_t
+#elif (SIZEOF_LONG == 8)
+#define int64 long
+#define uint64 unigned long
+#elif (SIZEOF_INT == 8)
+#define int64 int
+#define uint64 unsigned int
+#elif HAVE_LONGLONG
+#define int64 long long
+#define uint64 unsigned long long
+#else
+/* As long as it gets... */
+#define int64 off_t
+#define uint64 unsigned 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 uint64
+#define DEV64_T uint64
#ifndef MIN
#define MIN(a,b) ((a)<(b)?(a):(b))
#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
+
+#ifndef IN_LOOPBACKNET
+#define IN_LOOPBACKNET 127
+#endif
+
struct file_struct {
- time_t modtime;
- off_t length;
- mode_t mode;
- dev_t dev;
- uid_t uid;
- gid_t gid;
- char *name;
- char *dir;
- char *link;
- char sum[SUM_LENGTH];
+ 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;
+ 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]; /* md4 checksum */
+ 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 */
- int count; /* how many chunks */
- int remainder; /* flength % block_length */
- int n; /* block_length */
- struct sum_buf *sums; /* points to info for each chunk */
+ 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 "version.h"
+#include "lib/mdfour.h"
+#include "lib/permstring.h"
+#include "lib/addrinfo.h"
+
#include "proto.h"
-#include "md4.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 strrchr rindex
#endif
-#if HAVE_DIRENT_H
-# include <dirent.h>
-#else
-# define dirent direct
-# if HAVE_SYS_NDIR_H
-# include <sys/ndir.h>
-# endif
-# if HAVE_SYS_DIR_H
-# include <sys/dir.h>
-# endif
-# if HAVE_NDIR_H
-# include <ndir.h>
-# endif
-#endif
-
#ifndef HAVE_ERRNO_DECL
extern int errno;
#endif
-#ifndef HAVE_BCOPY
-#define bcopy(src,dest,n) memcpy(dest,src,n)
+#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 HAVE_BZERO
-#define bzero(buf,n) memset(buf,0,n)
+#ifndef STDERR_FILENO
+#define STDERR_FILENO 2
#endif
-#define SUPPORT_LINKS (HAVE_READLINK && defined(S_ISLNK))
+#ifndef S_IWUSR
+#define S_IWUSR 0200
+#endif
+
+#ifndef ACCESSPERMS
+#define ACCESSPERMS 0777
+#endif
+
+#ifndef S_ISVTX
+#define S_ISVTX 0
+#endif
+
+#define CHMOD_BITS (S_ISUID | S_ISGID | S_ISVTX | ACCESSPERMS)
+
+#ifndef _S_IFMT
+#define _S_IFMT 0170000
+#endif
+
+#ifndef _S_IFLNK
+#define _S_IFLNK 0120000
+#endif
#ifndef S_ISLNK
-#define S_ISLNK(x) 0
+#define S_ISLNK(mode) (((mode) & (_S_IFMT)) == (_S_IFLNK))
#endif
-#if !SUPPORT_LINKS
-#define lstat stat
+#ifndef S_ISBLK
+#define S_ISBLK(mode) (((mode) & (_S_IFMT)) == (_S_IFBLK))
#endif
-#define SIGNAL_CAST (RETSIGTYPE (*)())
+#ifndef S_ISCHR
+#define S_ISCHR(mode) (((mode) & (_S_IFMT)) == (_S_IFCHR))
+#endif
-#ifndef EWOULDBLOCK
-#define EWOULDBLOCK EAGAIN
+#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))
+
+/* 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):"<NULL>")
+
+#if !defined(__GNUC__) || defined(APPLE)
+/* Apparently the OS X port of gcc gags on __attribute__.
+ *
+ * <http://www.opensource.apple.com/bugs/X/gcc/2512150.html> */
+#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 inet_pton(int af, const char *src, void *dst);
+#endif
+
+#ifdef MAINTAINER_MODE
+const char *get_panic_action(void);
#endif
-#define IS_DEVICE(mode) (S_ISCHR(mode) || S_ISBLK(mode))
+#define UNUSED(x) x __attribute__((__unused__))
+extern const char *io_write_phase, *io_read_phase;