freebsd-dev/crypto/openssh/sftp-glob.c
Ed Maste 19261079b7 openssh: update to OpenSSH v8.7p1
Some notable changes, from upstream's release notes:

- sshd(8): Remove support for obsolete "host/port" syntax.
- ssh(1): When prompting whether to record a new host key, accept the key
  fingerprint as a synonym for "yes".
- ssh-keygen(1): when acting as a CA and signing certificates with an RSA
  key, default to using the rsa-sha2-512 signature algorithm.
- ssh(1), sshd(8), ssh-keygen(1): this release removes the "ssh-rsa"
  (RSA/SHA1) algorithm from those accepted for certificate signatures.
- ssh-sk-helper(8): this is a new binary. It is used by the FIDO/U2F
  support to provide address-space isolation for token middleware
  libraries (including the internal one).
- ssh(1): this release enables UpdateHostkeys by default subject to some
  conservative preconditions.
- scp(1): this release changes the behaviour of remote to remote copies
  (e.g. "scp host-a:/path host-b:") to transfer through the local host
  by default.
- scp(1): experimental support for transfers using the SFTP protocol as
  a replacement for the venerable SCP/RCP protocol that it has
  traditionally used.

Additional integration work is needed to support FIDO/U2F in the base
system.

Deprecation Notice
------------------

OpenSSH will disable the ssh-rsa signature scheme by default in the
next release.

Reviewed by:	imp
MFC after:	1 month
Relnotes:	Yes
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D29985
2021-09-07 21:05:51 -04:00

151 lines
3.4 KiB
C

/* $OpenBSD: sftp-glob.c,v 1.29 2019/11/13 04:47:52 deraadt Exp $ */
/*
* Copyright (c) 2001-2004 Damien Miller <djm@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include "includes.h"
#include <sys/types.h>
#ifdef HAVE_SYS_STAT_H
# include <sys/stat.h>
#endif
#include <dirent.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include "xmalloc.h"
#include "sftp.h"
#include "sftp-common.h"
#include "sftp-client.h"
int remote_glob(struct sftp_conn *, const char *, int,
int (*)(const char *, int), glob_t *);
struct SFTP_OPENDIR {
SFTP_DIRENT **dir;
int offset;
};
static struct {
struct sftp_conn *conn;
} cur;
static void *
fudge_opendir(const char *path)
{
struct SFTP_OPENDIR *r;
r = xcalloc(1, sizeof(*r));
if (do_readdir(cur.conn, (char *)path, &r->dir)) {
free(r);
return(NULL);
}
r->offset = 0;
return((void *)r);
}
static struct dirent *
fudge_readdir(struct SFTP_OPENDIR *od)
{
/* Solaris needs sizeof(dirent) + path length (see below) */
static char buf[sizeof(struct dirent) + MAXPATHLEN];
struct dirent *ret = (struct dirent *)buf;
#ifdef __GNU_LIBRARY__
static int inum = 1;
#endif /* __GNU_LIBRARY__ */
if (od->dir[od->offset] == NULL)
return(NULL);
memset(buf, 0, sizeof(buf));
/*
* Solaris defines dirent->d_name as a one byte array and expects
* you to hack around it.
*/
#ifdef BROKEN_ONE_BYTE_DIRENT_D_NAME
strlcpy(ret->d_name, od->dir[od->offset++]->filename, MAXPATHLEN);
#else
strlcpy(ret->d_name, od->dir[od->offset++]->filename,
sizeof(ret->d_name));
#endif
#ifdef __GNU_LIBRARY__
/*
* Idiot glibc uses extensions to struct dirent for readdir with
* ALTDIRFUNCs. Not that this is documented anywhere but the
* source... Fake an inode number to appease it.
*/
ret->d_ino = inum++;
if (!inum)
inum = 1;
#endif /* __GNU_LIBRARY__ */
return(ret);
}
static void
fudge_closedir(struct SFTP_OPENDIR *od)
{
free_sftp_dirents(od->dir);
free(od);
}
static int
fudge_lstat(const char *path, struct stat *st)
{
Attrib *a;
if (!(a = do_lstat(cur.conn, (char *)path, 1)))
return(-1);
attrib_to_stat(a, st);
return(0);
}
static int
fudge_stat(const char *path, struct stat *st)
{
Attrib *a;
if (!(a = do_stat(cur.conn, (char *)path, 1)))
return(-1);
attrib_to_stat(a, st);
return(0);
}
int
remote_glob(struct sftp_conn *conn, const char *pattern, int flags,
int (*errfunc)(const char *, int), glob_t *pglob)
{
pglob->gl_opendir = fudge_opendir;
pglob->gl_readdir = (struct dirent *(*)(void *))fudge_readdir;
pglob->gl_closedir = (void (*)(void *))fudge_closedir;
pglob->gl_lstat = fudge_lstat;
pglob->gl_stat = fudge_stat;
memset(&cur, 0, sizeof(cur));
cur.conn = conn;
return(glob(pattern, flags | GLOB_ALTDIRFUNC, errfunc, pglob));
}