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Adds optional "internal ls" support for ftpd, by collecting

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modules from src/bin/ls, and handling exec(_PATH_LS,..) as a
special case, very useful in an environment where many users
are given chroot access. "~/etc/{s}pwd.db" files are still
needed if uid/gid->user/group translation is desired.

To enable this it must be compiled with the make variable
FTP_INTERNAL_LS defined, either in /etc/make.conf or the
environment.
This commit is contained in:
David Nugent 1997-04-26 12:12:10 +00:00
parent 477a642cee
commit af85d782fd
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=25165
5 changed files with 41 additions and 8 deletions
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9
libexec/ftpd/Makefile
View File

@ -1,5 +1,5 @@
# @(#)Makefile 8.2 (Berkeley) 4/4/94
# $Id: Makefile,v 1.19 1997/02/22 14:21:26 peter Exp $
# $Id: Makefile,v 1.20 1997/04/23 04:56:39 davidn Exp $
PROG= ftpd
MAN8= ftpd.8
@ -12,6 +12,13 @@ DPADD= ${LIBSKEY} ${LIBMD} ${LIBCRYPT} ${LIBUTIL}
CLEANFILES+=ftpcmd.c y.tab.h
.ifdef FTPD_INTERNAL_LS
LSDIR= ../../bin/ls
.PATH: ${.CURDIR}/${LSDIR}
SRCS+= ls.c cmp.c print.c stat_flags.c util.c
CFLAGS+=-DINTERNAL_LS -Dmain=ls_main -I${.CURDIR}/${LSDIR}
.endif
.if exists(${DESTDIR}/usr/lib/libkrb.a) && defined(MAKE_EBONES)
.PATH: ${.CURDIR}/../../usr.bin/login
SRCS+= klogin.c

5
libexec/ftpd/extern.h
View File

@ -31,7 +31,7 @@
* SUCH DAMAGE.
*
* @(#)extern.h 8.2 (Berkeley) 4/4/94
* $Id$
* $Id: extern.h,v 1.8 1997/02/22 14:21:26 peter Exp $
*/
void blkfree __P((char **));
@ -70,3 +70,6 @@ int yyparse __P((void));
#if defined(SKEY) && defined(_PWD_H_) /* XXX evil */
char *skey_challenge __P((char *, struct passwd *, int));
#endif
#if defined(INTERNAL_LS)
int ls_main __P((int, char **));
#endif

11
libexec/ftpd/ftpd.c
View File

@ -30,7 +30,7 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: ftpd.c,v 1.34 1997/03/28 15:48:09 imp Exp $
* $Id: ftpd.c,v 1.35 1997/04/23 04:56:39 davidn Exp $
*/
#if 0
@ -102,7 +102,12 @@ static char sccsid[] = "@(#)ftpd.c 8.4 (Berkeley) 4/16/94";
#include <varargs.h>
#endif
#ifdef INTERNAL_LS
static char version[] = "Version 6.00LS";
#undef main
#else
static char version[] = "Version 6.00";
#endif
extern off_t restart_point;
extern char cbuf[];
@ -1388,7 +1393,7 @@ statfilecmd(filename)
int c;
char line[LINE_MAX];
(void)snprintf(line, sizeof(line), "/bin/ls -lgA %s", filename);
(void)snprintf(line, sizeof(line), _PATH_LS " -lgA %s", filename);
fin = ftpd_popen(line, "r");
lreply(211, "status of %s:", filename);
while ((c = getc(fin)) != EOF) {
@ -1899,7 +1904,7 @@ send_file_list(whichf)
*/
if (dirname[0] == '-' && *dirlist == NULL &&
transflag == 0) {
retrieve("/bin/ls %s", dirname);
retrieve(_PATH_LS " %s", dirname);
goto out;
}
perror_reply(550, whichf);

3
libexec/ftpd/pathnames.h
View File

@ -31,7 +31,7 @@
* SUCH DAMAGE.
*
* @(#)pathnames.h 8.1 (Berkeley) 6/4/93
* $Id$
* $Id: pathnames.h,v 1.8 1997/02/22 14:21:29 peter Exp $
*/
#include <paths.h>
@ -40,3 +40,4 @@
#define _PATH_FTPWELCOME "/etc/ftpwelcome"
#define _PATH_FTPLOGINMESG "/etc/ftpmotd"
#define _PATH_FTPDSTATFILE "/var/log/ftpd"
#define _PATH_LS "/bin/ls"

21
libexec/ftpd/popen.c
View File

@ -33,7 +33,7 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id$
* $Id: popen.c,v 1.7 1997/02/22 14:21:31 peter Exp $
*/
#if 0
@ -54,6 +54,9 @@ static char sccsid[] = "@(#)popen.c 8.3 (Berkeley) 4/6/94";
#include <unistd.h>
#include "extern.h"
#ifdef INTERNAL_LS
#include "pathnames.h"
#endif
#define MAXUSRARGS 100
#define MAXGLOBARGS 1000
@ -111,7 +114,13 @@ ftpd_popen(program, type)
gargv[gargc] = NULL;
iop = NULL;
switch(pid = vfork()) {
#ifdef INTERNAL_LS
fflush(NULL);
pid = (strcmp(gargv[0], _PATH_LS) == 0) ? fork() : vfork();
#else
pid = vfork();
#endif
switch(pid) {
case -1: /* error */
(void)close(pdes[0]);
(void)close(pdes[1]);
@ -132,6 +141,14 @@ ftpd_popen(program, type)
}
(void)close(pdes[1]);
}
#ifdef INTERNAL_LS
if (strcmp(gargv[0], _PATH_LS) == 0) {
extern int optreset;
/* Reset getopt for ls_main() */
optreset = optind = optopt = 1;
exit(ls_main(gargc, gargv));
}
#endif
execv(gargv[0], gargv);
_exit(1);
}