/*
* Copyright (c) 1983, 1990, 1992, 1993, 2002
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
static char copyright[] =
"@(#) Copyright (c) 1983, 1990, 1992, 1993\n\
The Regents of the University of California. All rights reserved.\n";
#endif /* not lint */
#ifndef lint
static char sccsid[] = "@(#)rcp.c 8.2 (Berkeley) 4/2/94";
#endif /* not lint */
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <sys/param.h>
#include <sys/stat.h>
#ifdef TIME_WITH_SYS_TIME
# include <sys/time.h>
# include <time.h>
#else
# ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
# else
# include <time.h>
# endif
#endif
#include <sys/socket.h>
#include <netinet/in.h>
#ifdef HAVE_NETINET_IN_SYSTM_H
#include <netinet/in_systm.h>
#endif
#ifdef HAVE_NETINET_IP_H
#include <netinet/ip.h>
#endif
#include <ctype.h>
#include <dirent.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <netdb.h>
#include <pwd.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <string.h>
#include <unistd.h>
#include <getopt.h>
#ifndef HAVE_UTIMES
#include <utime.h> /* If we don't have utimes(), use utime(). */
#endif
#include "extern.h"
#if !HAVE_DECL_STRERROR
extern const char *strerror __P ((int));
#endif
#ifdef KERBEROS
# include <kerberosIV/des.h>
# include <kerberosIV/krb.h>
char dest_realm_buf[REALM_SZ];
char *dest_realm = NULL;
int use_kerberos = 1;
CREDENTIALS cred;
Key_schedule schedule;
extern char *krb_realmofhost ();
# ifdef CRYPT
int doencrypt = 0;
# define OPTIONS "dfKk:prtxV"
# else
# define OPTIONS "dfKk:prtV"
# endif
#else
# define OPTIONS "dfprtV"
#endif /* KERBEROS */
#if !defined (S_ISTXT) && defined (S_ISVTX)
#define S_ISTXT S_ISVTX
#endif
static const char *short_options = OPTIONS;
static struct option long_options[] =
{
{ "recursive", required_argument, 0, 'r' },
{ "preserve", no_argument, 0, 'p' },
#ifdef KERBEROS
{ "kerberos", no_argument, 0, 'K' },
{ "realm", required_argument, 0, 'k' },
# ifdef CRYPT
{ "encrypt", no_argument, 0, 'x' },
# endif
#endif
{ "help", no_argument, 0, 'h' },
{ "version", no_argument, 0, 'V' },
/* Server option. */
{ "directory", required_argument, 0, 'd' },
{ "from", required_argument, 0, 'f' },
{ "to", required_argument, 0, 't' },
{ 0, 0, 0, 0 }
};
struct passwd *pwd;
u_short port;
uid_t userid;
int errs, rem;
int pflag, iamremote, iamrecursive, targetshouldbedirectory;
#define CMDNEEDS 64
char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */
#ifdef KERBEROS
int kerberos __P ((char **, char *, char *, char *));
void oldw __P ((const char *, ...));
#endif
int response __P ((void));
void rsource __P ((char *, struct stat *));
void sink __P ((int, char *[]));
void source __P ((int, char *[]));
void tolocal __P ((int, char *[]));
void toremote __P ((char *, int, char *[]));
void usage __P ((void));
void help __P ((void));
int
main (int argc, char *argv[])
{
struct servent *sp;
int ch, fflag, tflag;
char *targ;
const char *shell;
#ifndef HAVE___PROGNAME
extern char *__progname;
__progname = argv[0];
#endif
fflag = tflag = 0;
while ((ch = getopt_long (argc, argv, short_options, long_options, 0))
!= EOF)
switch(ch)
{ /* User-visible flags. */
case 'K':
#ifdef KERBEROS
use_kerberos = 0;
#endif
break;
#ifdef KERBEROS
case 'k':
dest_realm = dest_realm_buf;
strncpy(dest_realm_buf, optarg, REALM_SZ);
break;
#ifdef CRYPT
case 'x':
doencrypt = 1;
/* des_set_key(cred.session, schedule); */
break;
#endif
#endif
case 'p':
pflag = 1;
break;
case 'r':
iamrecursive = 1;
break;
/* Server options. */
case 'd':
targetshouldbedirectory = 1;
break;
case 'f': /* "from" */
iamremote = 1;
fflag = 1;
break;
case 't': /* "to" */
iamremote = 1;
tflag = 1;
break;
case 'V':
printf ("rcp (%s) %s\n", PACKAGE_NAME, PACKAGE_VERSION);
exit (0);
break;
case 'h':
help ();
break;
case '?':
default:
usage ();
}
argc -= optind;
argv += optind;
#ifdef KERBEROS
if (use_kerberos)
{
#ifdef CRYPT
shell = doencrypt ? "ekshell" : "kshell";
#else
shell = "kshell";
#endif
if ((sp = getservbyname (shell, "tcp")) == NULL)
{
use_kerberos = 0;
oldw ("can't get entry for %s/tcp service", shell);
sp = getservbyname (shell = "shell", "tcp");
}
} else
sp = getservbyname (shell = "shell", "tcp");
#else
sp = getservbyname (shell = "shell", "tcp");
#endif
if (sp == NULL)
errx (1, "%s/tcp: unknown service", shell);
port = sp->s_port;
if ((pwd = getpwuid (userid = getuid ())) == NULL)
errx(1, "unknown user %d", (int)userid);
rem = STDIN_FILENO; /* XXX */
if (fflag)
{ /* Follow "protocol", send data. */
response ();
setuid (userid);
source (argc, argv);
exit (errs);
}
if (tflag)
{ /* Receive data. */
setuid (userid);
sink (argc, argv);
exit (errs);
}
if (argc < 2)
usage ();
if (argc > 2)
targetshouldbedirectory = 1;
rem = -1;
/* Command to be executed on remote system using "rsh". */
#ifdef KERBEROS
snprintf (cmd, sizeof cmd, "rcp%s%s%s%s", iamrecursive ? " -r" : "",
#ifdef CRYPT
(doencrypt && use_kerberos ? " -x" : ""),
#else
"",
#endif
pflag ? " -p" : "", targetshouldbedirectory ? " -d" : "");
#else
snprintf (cmd, sizeof cmd, "rcp%s%s%s",
iamrecursive ? " -r" : "", pflag ? " -p" : "",
targetshouldbedirectory ? " -d" : "");
#endif
signal (SIGPIPE, lostconn);
targ = colon (argv[argc - 1]); /* Dest is remote host. */
if (targ) /* Dest is remote host. */
toremote (targ, argc, argv);
else
{
tolocal (argc, argv); /* Dest is local host. */
if (targetshouldbedirectory)
verifydir(argv[argc - 1]);
}
exit (errs);
}
void
toremote (char *targ, int argc, char *argv[])
{
int i, len, tos;
char *bp, *host, *src, *suser, *thost, *tuser;
*targ++ = 0;
if (*targ == 0)
targ = ".";
thost = strchr (argv[argc - 1], '@');
if (thost)
{
/* user@host */
*thost++ = 0;
tuser = argv[argc - 1];
if (*tuser == '\0')
tuser = NULL;
else if (!okname(tuser))
exit (1);
}
else
{
thost = argv[argc - 1];
tuser = NULL;
}
for (i = 0; i < argc - 1; i++)
{
src = colon (argv[i]);
if (src)
{ /* remote to remote */
*src++ = 0;
if (*src == 0)
src = ".";
host = strchr (argv[i], '@');
len = strlen (PATH_RSH) + strlen (argv[i]) +
strlen (src) + (tuser ? strlen (tuser) : 0) +
strlen (thost) + strlen (targ) + CMDNEEDS + 20;
if (!(bp = malloc (len)))
err (1, NULL);
if (host)
{
*host++ = 0;
suser = argv[i];
if (*suser == '\0')
suser = pwd->pw_name;
else if (!okname (suser))
continue;
snprintf (bp, len,
"%s %s -l %s -n %s %s '%s%s%s:%s'",
PATH_RSH, host, suser, cmd, src,
tuser ? tuser : "", tuser ? "@" : "",
thost, targ);
}
else
snprintf (bp, len,
"exec %s %s -n %s %s '%s%s%s:%s'",
PATH_RSH, argv[i], cmd, src,
tuser ? tuser : "", tuser ? "@" : "",
thost, targ);
susystem (bp, userid);
free (bp);
}
else
{ /* local to remote */
if (rem == -1)
{
len = strlen (targ) + CMDNEEDS + 20;
if (!(bp = malloc (len)))
err (1, NULL);
snprintf (bp, len, "%s -t %s", cmd, targ);
host = thost;
#ifdef KERBEROS
if (use_kerberos)
rem = kerberos (&host, bp, pwd->pw_name,
tuser ? tuser : pwd->pw_name);
else
#endif
rem = rcmd (&host, port, pwd->pw_name,
tuser ? tuser : pwd->pw_name, bp, 0);
if (rem < 0)
exit (1);
#if defined (IP_TOS) && defined (IPPROTO_IP) && defined (IPTOS_THROUGHPUT)
tos = IPTOS_THROUGHPUT;
if (setsockopt (rem, IPPROTO_IP, IP_TOS,
(char *) &tos, sizeof(int)) < 0)
warn("TOS (ignored)");
#endif
if (response () < 0)
exit(1);
free(bp);
setuid(userid);
}
source(1, argv+i);
}
}
}
void
tolocal (int argc, char *argv[])
{
int i, len, tos;
char *bp, *host, *src, *suser;
for (i = 0; i < argc - 1; i++)
{
if (!(src = colon (argv[i])))
{ /* Local to local. */
len = strlen (PATH_CP) + strlen (argv[i]) +
strlen (argv[argc - 1]) + 20;
if (!(bp = malloc (len)))
err (1, NULL);
snprintf (bp, len, "exec %s%s%s %s %s", PATH_CP,
iamrecursive ? " -r" : "", pflag ? " -p" : "",
argv[i], argv[argc - 1]);
if (susystem (bp, userid))
++errs;
free (bp);
continue;
}
*src++ = 0;
if (*src == 0)
src = ".";
if ((host = strchr(argv[i], '@')) == NULL)
{
host = argv[i];
suser = pwd->pw_name;
}
else
{
*host++ = 0;
suser = argv[i];
if (*suser == '\0')
suser = pwd->pw_name;
else if (!okname (suser))
continue;
}
len = strlen (src) + CMDNEEDS + 20;
if ((bp = malloc (len)) == NULL)
err (1, NULL);
snprintf (bp, len, "%s -f %s", cmd, src);
rem =
#ifdef KERBEROS
use_kerberos ? kerberos(&host, bp, pwd->pw_name, suser) :
#endif
rcmd (&host, port, pwd->pw_name, suser, bp, 0);
free (bp);
if (rem < 0)
{
++errs;
continue;
}
seteuid (userid);
#if defined (IP_TOS) && defined (IPPROTO_IP) && defined (IPTOS_THROUGHPUT)
tos = IPTOS_THROUGHPUT;
if (setsockopt (rem, IPPROTO_IP, IP_TOS, (char *) &tos, sizeof (int)) < 0)
warn ("TOS (ignored)");
#endif
sink (1, argv + argc - 1);
seteuid (0);
close (rem);
rem = -1;
}
}
static int
write_stat_time (int fd, struct stat *stat)
{
char buf[4 * sizeof (long) * 3 + 2];
time_t a_sec, m_sec;
long a_usec = 0, m_usec = 0;
#ifdef HAVE_STAT_ST_MTIMESPEC
a_sec = stat->st_atimespec.ts_sec;
a_usec = stat->st_atimespec.ts_nsec / 1000;
m_sec = stat->st_mtimespec.ts_sec;
m_usec = stat->st_mtimespec.ts_nsec / 1000;
#else
a_sec = stat->st_atime;
m_sec = stat->st_mtime;
#ifdef HAVE_STAT_ST_MTIME_USEC
a_usec = stat->st_atime_usec;
m_usec = stat->st_mtime_usec;
#endif
#endif
snprintf (buf, sizeof(buf), "T%ld %ld %ld %ld\n",
a_sec, a_usec, m_sec, m_usec);
return write (fd, buf, strlen (buf));
}
void
source (int argc, char *argv[])
{
struct stat stb;
static BUF buffer;
BUF *bp;
off_t i;
int amt, fd, haderr, indx, result;
char *last, *name, buf[BUFSIZ];
for (indx = 0; indx < argc; ++indx)
{
name = argv[indx];
if ((fd = open (name, O_RDONLY, 0)) < 0)
goto syserr;
if (fstat (fd, &stb))
{
syserr:
run_err ("%s: %s", name, strerror (errno));
goto next;
}
switch (stb.st_mode & S_IFMT)
{
case S_IFREG:
break;
case S_IFDIR:
if (iamrecursive)
{
rsource (name, &stb);
goto next;
}
/* FALLTHROUGH */
default:
run_err ("%s: not a regular file", name);
goto next;
}
if ((last = strrchr (name, '/')) == NULL)
last = name;
else
++last;
if (pflag)
{
write_stat_time (rem, &stb);
if (response() < 0)
goto next;
}
#define RCP_MODEMASK (S_ISUID|S_ISGID|S_ISTXT|S_IRWXU|S_IRWXG|S_IRWXO)
snprintf(buf, sizeof buf,
(sizeof(stb.st_size) > sizeof(long)
? "C%04o %qd %s\n"
: "C%04o %ld %s\n"),
stb.st_mode & RCP_MODEMASK, stb.st_size, last);
write (rem, buf, strlen (buf));
if (response () < 0)
goto next;
if ((bp = allocbuf (&buffer, fd, BUFSIZ)) == NULL)
{
next:
close (fd);
continue;
}
/* Keep writing after an error so that we stay sync'd up. */
for (haderr = i = 0; i < stb.st_size; i += bp->cnt)
{
amt = bp->cnt;
if (i + amt > stb.st_size)
amt = stb.st_size - i;
if (!haderr)
{
result = read (fd, bp->buf, amt);
if (result != amt)
haderr = result >= 0 ? EIO : errno;
}
if (haderr)
write (rem, bp->buf, amt);
else
{
result = write (rem, bp->buf, amt);
if (result != amt)
haderr = result >= 0 ? EIO : errno;
}
}
if (close (fd) && !haderr)
haderr = errno;
if (!haderr)
write (rem, "", 1);
else
run_err ("%s: %s", name, strerror(haderr));
response ();
}
}
void
rsource (char *name, struct stat *statp)
{
DIR *dirp;
struct dirent *dp;
char *last, *vect[1];
char *buf;
int buf_len;
if (!(dirp = opendir (name)))
{
run_err ("%s: %s", name, strerror(errno));
return;
}
last = strrchr (name, '/');
if (last == 0)
last = name;
else
last++;
if (pflag)
{
write_stat_time (rem, statp);
if (response () < 0) {
closedir (dirp);
return;
}
}
buf_len =
1 + sizeof (int) * 3 + 1 + sizeof (int) * 3 + 1 + strlen (last) + 2;
buf = malloc (buf_len);
if (! buf)
{
run_err ("malloc failed for %d bytes", buf_len);
closedir (dirp);
return;
}
sprintf (buf, "D%04o %d %s\n", statp->st_mode & RCP_MODEMASK, 0, last);
write (rem, buf, strlen (buf));
free (buf);
if (response () < 0)
{
closedir (dirp);
return;
}
while (dp = readdir(dirp))
{
if (!strcmp (dp->d_name, ".") || !strcmp (dp->d_name, ".."))
continue;
buf_len = strlen (name) + 1 + strlen (dp->d_name) + 1;
buf = malloc (buf_len);
if (! buf)
{
run_err ("malloc_failed for %d bytes", buf_len);
continue;
}
sprintf (buf, "%s/%s", name, dp->d_name);
vect[0] = buf;
free (buf);
source(1, vect);
}
closedir (dirp);
write (rem, "E\n", 2);
response ();
}
void
sink (int argc, char *argv[])
{
static BUF buffer;
struct stat stb;
struct timeval tv[2];
enum { YES, NO, DISPLAYED } wrerr;
BUF *bp;
off_t i, j;
int amt, count, exists, first, mask, mode, ofd, omode;
int setimes, size, targisdir, wrerrno;
char ch, *cp, *np, *targ, *vect[1], buf[BUFSIZ];
const char *why;
#define atime tv[0]
#define mtime tv[1]
#define SCREWUP(str) { why = str; goto screwup; }
setimes = targisdir = 0;
mask = umask (0);
if (!pflag)
umask (mask);
if (argc != 1)
{
run_err ("ambiguous target");
exit (1);
}
targ = *argv;
if (targetshouldbedirectory)
verifydir (targ);
write (rem, "", 1);
if (stat (targ, &stb) == 0 && S_ISDIR (stb.st_mode))
targisdir = 1;
for (first = 1;; first = 0)
{
cp = buf;
if (read (rem, cp, 1) <= 0)
return;
if (*cp++ == '\n')
SCREWUP ("unexpected <newline>");
do
{
if (read (rem, &ch, sizeof ch) != sizeof ch)
SCREWUP("lost connection");
*cp++ = ch;
} while (cp < &buf[BUFSIZ - 1] && ch != '\n');
*cp = 0;
if (buf[0] == '\01' || buf[0] == '\02')
{
if (iamremote == 0)
write (STDERR_FILENO, buf + 1, strlen(buf + 1));
if (buf[0] == '\02')
exit (1);
++errs;
continue;
}
if (buf[0] == 'E')
{
write (rem, "", 1);
return;
}
if (ch == '\n')
*--cp = 0;
#define getnum(t) (t) = 0; while (isdigit(*cp)) (t) = (t) * 10 + (*cp++ - '0');
cp = buf;
if (*cp == 'T')
{
setimes++;
cp++;
getnum(mtime.tv_sec);
if (*cp++ != ' ')
SCREWUP ("mtime.sec not delimited");
getnum (mtime.tv_usec);
if (*cp++ != ' ')
SCREWUP ("mtime.usec not delimited");
getnum (atime.tv_sec);
if (*cp++ != ' ')
SCREWUP ("atime.sec not delimited");
getnum (atime.tv_usec);
if (*cp++ != '\0')
SCREWUP ("atime.usec not delimited");
write (rem, "", 1);
continue;
}
if (*cp != 'C' && *cp != 'D')
{
/*
* Check for the case "rcp remote:foo\* local:bar".
* In this case, the line "No match." can be returned
* by the shell before the rcp command on the remote is
* executed so the ^Aerror_message convention isn't
* followed.
*/
if (first)
{
run_err ("%s", cp);
exit (1);
}
SCREWUP ("expected control record");
}
mode = 0;
for (++cp; cp < buf + 5; cp++)
{
if (*cp < '0' || *cp > '7')
SCREWUP ("bad mode");
mode = (mode << 3) | (*cp - '0');
}
if (*cp++ != ' ')
SCREWUP ("mode not delimited");
for (size = 0; isdigit(*cp);)
size = size * 10 + (*cp++ - '0');
if (*cp++ != ' ')
SCREWUP ("size not delimited");
if (targisdir)
{
static char *namebuf;
static int cursize;
size_t need;
need = strlen (targ) + strlen (cp) + 250;
if (need > cursize)
{
if (!(namebuf = malloc (need)))
run_err("%s", strerror (errno));
}
snprintf (namebuf, need, "%s%s%s", targ, *targ ? "/" : "", cp);
np = namebuf;
}
else
np = targ;
exists = stat (np, &stb) == 0;
if (buf[0] == 'D')
{
int mod_flag = pflag;
if (exists)
{
if (!S_ISDIR (stb.st_mode))
{
errno = ENOTDIR;
goto bad;
}
if (pflag)
chmod (np, mode);
}
else
{
/* Handle copying from a read-only directory */
mod_flag = 1;
if (mkdir (np, mode | S_IRWXU) < 0)
goto bad;
}
vect[0] = np;
sink (1, vect);
if (setimes)
{
#ifndef HAVE_UTIMES
struct utimbuf utbuf;
utbuf.actime = atime.tv_sec;
utbuf.modtime = mtime.tv_sec;
#endif
setimes = 0;
#ifdef HAVE_UTIMES
if (utimes (np, tv) < 0)
#else
if (utime (np, &utbuf) < 0)
#endif
run_err ("%s: set times: %s", np, strerror (errno));
}
if (mod_flag)
chmod (np, mode);
continue;
}
omode = mode;
mode |= S_IWRITE;
if ((ofd = open (np, O_WRONLY|O_CREAT, mode)) < 0)
{
bad:
run_err ("%s: %s", np, strerror(errno));
continue;
}
write (rem, "", 1);
if ((bp = allocbuf (&buffer, ofd, BUFSIZ)) == NULL)
{
close (ofd);
continue;
}
cp = bp->buf;
wrerr = NO;
for (count = i = 0; i < size; i += BUFSIZ)
{
amt = BUFSIZ;
if (i + amt > size)
amt = size - i;
count += amt;
do
{
j = read (rem, cp, amt);
if (j <= 0)
{
run_err ("%s", j ? strerror(errno) : "dropped connection");
exit (1);
}
amt -= j;
cp += j;
} while (amt > 0);
if (count == bp->cnt)
{
/* Keep reading so we stay sync'd up. */
if (wrerr == NO)
{
j = write (ofd, bp->buf, count);
if (j != count)
{
wrerr = YES;
wrerrno = j >= 0 ? EIO : errno;
}
}
count = 0;
cp = bp->buf;
}
}
if (count != 0 && wrerr == NO
&& (j = write (ofd, bp->buf, count)) != count)
{
wrerr = YES;
wrerrno = j >= 0 ? EIO : errno;
}
if (ftruncate (ofd, size))
{
run_err ("%s: truncate: %s", np, strerror (errno));
wrerr = DISPLAYED;
}
if (pflag)
{
if (exists || omode != mode)
if (fchmod (ofd, omode))
run_err ("%s: set mode: %s", np, strerror (errno));
}
else
{
if (!exists && omode != mode)
if (fchmod (ofd, omode & ~mask))
run_err ("%s: set mode: %s", np, strerror (errno));
}
close (ofd);
response ();
if (setimes && wrerr == NO)
{
#ifndef HAVE_UTIMES
struct utimbuf utbuf;
utbuf.actime = atime.tv_sec;
utbuf.modtime = mtime.tv_sec;
#endif
setimes = 0;
#ifdef HAVE_UTIMES
if (utimes (np, tv) < 0)
{
#else
if (utime (np, &utbuf) < 0)
{
#endif
run_err ("%s: set times: %s", np, strerror (errno));
wrerr = DISPLAYED;
}
}
switch (wrerr)
{
case YES:
run_err ("%s: %s", np, strerror(wrerrno));
break;
case NO:
write (rem, "", 1);
break;
case DISPLAYED:
break;
}
}
screwup:
run_err ("protocol error: %s", why);
exit (1);
}
#ifdef KERBEROS
int
kerberos (char **host, char *bp, char *locuser, char *user)
{
struct servent *sp;
again:
if (use_kerberos)
{
rem = KSUCCESS;
errno = 0;
if (dest_realm == NULL)
dest_realm = krb_realmofhost (*host);
rem =
#ifdef CRYPT
doencrypt ?
krcmd_mutual (host, port, user, bp, 0, dest_realm, &cred, schedule) :
#endif
krcmd (host, port, user, bp, 0, dest_realm);
if (rem < 0)
{
use_kerberos = 0;
if ((sp = getservbyname ("shell", "tcp")) == NULL)
errx (1, "unknown service shell/tcp");
if (errno == ECONNREFUSED)
oldw ("remote host doesn't support Kerberos");
else if (errno == ENOENT)
oldw ("can't provide Kerberos authentication data");
port = sp->s_port;
goto again;
}
}
else
{
#ifdef CRYPT
if (doencrypt)
errx (1, "the -x option requires Kerberos authentication");
#endif
rem = rcmd (host, port, locuser, user, bp, 0);
}
return rem;
}
#endif /* KERBEROS */
int
response ()
{
char ch, *cp, resp, rbuf[BUFSIZ];
if (read (rem, &resp, sizeof resp) != sizeof resp)
lostconn (0);
cp = rbuf;
switch (resp)
{
case 0: /* ok */
return 0;
default:
*cp++ = resp;
/* FALLTHROUGH */
case 1: /* error, followed by error msg */
case 2: /* fatal error, "" */
do
{
if (read (rem, &ch, sizeof(ch)) != sizeof(ch)) lostconn(0);
*cp++ = ch;
} while (cp < &rbuf[BUFSIZ] && ch != '\n');
if (!iamremote)
write (STDERR_FILENO, rbuf, cp - rbuf);
++errs;
if (resp == 1)
return -1;
exit (1);
}
/* NOTREACHED */
}
void
usage ()
{
#ifdef KERBEROS
#ifdef CRYPT
fprintf (stderr, "%s\n\t%s\n",
"usage: rcp [-Kpx] [-k realm] f1 f2",
"or: rcp [-Kprx] [-k realm] f1 ... fn directory");
#else
fprintf (stderr, "%s\n\t%s\n",
"usage: rcp [-Kp] [-k realm] f1 f2",
"or: rcp [-Kpr] [-k realm] f1 ... fn directory");
#endif
#else
fprintf (stderr,
"usage: rcp [-p] f1 f2; or: rcp [-pr] f1 ... fn directory\n");
#endif
exit (1);
}
void
help ()
{
puts ("rcp - remote file copy.");
puts ("usage: rcp [-p] f1 f2; or: rcp [-pr] f1 ... fn directory\n");
puts ("\
-p, --preserve attempt to preserve (duplicate) in its copies the\n\
modification times and modes of the source files");
puts ("\
-r, --recursive If any of the source files are directories, copies\n\
each subtree rooted at that name; in this case the\n\
destination must be a directory");
#ifdef KERBEROS
puts ("\
-K, --kerberos turns off all Kerberos authentication");
puts ("\
-k, --realm REALM Obtain tickets for the remote host in REALM\n\
instead of the remote host's realm");
# ifdef CRYPT
puts ("\
-x, --encrypt encrypt all data using DES");
# endif
#endif
puts ("\
--help give this help list");
puts ("\
-V, --version print program version");
fprintf (stdout, "\nSubmit bug reports to %s.\n", PACKAGE_BUGREPORT);
exit (0);
}
#if defined(HAVE_STDARG_H) && defined(__STDC__) && __STDC__
#include <stdarg.h>
#else
#include <varargs.h>
#endif
#ifdef KERBEROS
void
#if defined(HAVE_STDARG_H) && defined(__STDC__) && __STDC__
oldw (const char *fmt, ...)
#else
oldw (fmt, va_alist)
char *fmt;
va_dcl
#endif
{
va_list ap;
#if defined(HAVE_STDARG_H) && defined(__STDC__) && __STDC__
va_start (ap, fmt);
#else
va_start (ap);
#endif
fprintf (stderr, "rcp: ");
vfprintf (stderr, fmt, ap);
fprintf (stderr, ", using standard rcp\n");
va_end (ap);
}
#endif
void
#if defined(HAVE_STDARG_H) && defined(__STDC__) && __STDC__
run_err (const char *fmt, ...)
#else
run_err (fmt, va_alist)
char *fmt;
va_dcl
#endif
{
static FILE *fp;
va_list ap;
#if defined(HAVE_STDARG_H) && defined(__STDC__) && __STDC__
va_start (ap, fmt);
#else
va_start (ap);
#endif
++errs;
if (fp == NULL && !(fp = fdopen (rem, "w")))
return;
fprintf (fp, "%c", 0x01);
fprintf (fp, "rcp: ");
vfprintf (fp, fmt, ap);
fprintf (fp, "\n");
fflush (fp);
if (!iamremote)
vwarnx (fmt, ap);
va_end (ap);
}