mirror of git://anongit.mindrot.org/openssh.git
1075 lines
21 KiB
C
1075 lines
21 KiB
C
/*
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* Copyright (c) 2000 Markus Friedl. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "includes.h"
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RCSID("$OpenBSD: sftp-server.c,v 1.6 2000/09/07 20:27:53 deraadt Exp $");
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#include "ssh.h"
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#include "buffer.h"
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#include "bufaux.h"
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#include "getput.h"
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#include "xmalloc.h"
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/* version */
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#define SSH_FILEXFER_VERSION 2
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/* client to server */
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#define SSH_FXP_INIT 1
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#define SSH_FXP_OPEN 3
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#define SSH_FXP_CLOSE 4
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#define SSH_FXP_READ 5
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#define SSH_FXP_WRITE 6
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#define SSH_FXP_LSTAT 7
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#define SSH_FXP_FSTAT 8
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#define SSH_FXP_SETSTAT 9
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#define SSH_FXP_FSETSTAT 10
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#define SSH_FXP_OPENDIR 11
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#define SSH_FXP_READDIR 12
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#define SSH_FXP_REMOVE 13
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#define SSH_FXP_MKDIR 14
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#define SSH_FXP_RMDIR 15
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#define SSH_FXP_REALPATH 16
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#define SSH_FXP_STAT 17
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#define SSH_FXP_RENAME 18
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/* server to client */
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#define SSH_FXP_VERSION 2
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#define SSH_FXP_STATUS 101
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#define SSH_FXP_HANDLE 102
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#define SSH_FXP_DATA 103
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#define SSH_FXP_NAME 104
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#define SSH_FXP_ATTRS 105
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/* portable open modes */
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#define SSH_FXF_READ 0x01
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#define SSH_FXF_WRITE 0x02
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#define SSH_FXF_APPEND 0x04
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#define SSH_FXF_CREAT 0x08
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#define SSH_FXF_TRUNC 0x10
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#define SSH_FXF_EXCL 0x20
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/* attributes */
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#define SSH_FXA_HAVE_SIZE 0x01
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#define SSH_FXA_HAVE_UGID 0x02
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#define SSH_FXA_HAVE_PERM 0x04
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#define SSH_FXA_HAVE_TIME 0x08
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/* status messages */
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#define SSH_FX_OK 0x00
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#define SSH_FX_EOF 0x01
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#define SSH_FX_NO_SUCH_FILE 0x02
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#define SSH_FX_PERMISSION_DENIED 0x03
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#define SSH_FX_FAILURE 0x04
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#define SSH_FX_BAD_MESSAGE 0x05
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#define SSH_FX_NO_CONNECTION 0x06
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#define SSH_FX_CONNECTION_LOST 0x07
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/* helper */
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#define get_int() buffer_get_int(&iqueue);
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#define get_string(lenp) buffer_get_string(&iqueue, lenp);
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#define TRACE log
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/* input and output queue */
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Buffer iqueue;
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Buffer oqueue;
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/* portable attibutes, etc. */
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typedef struct Attrib Attrib;
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typedef struct Stat Stat;
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struct Attrib
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{
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u_int32_t flags;
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u_int32_t size_high;
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u_int32_t size_low;
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u_int64_t size;
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u_int32_t uid;
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u_int32_t gid;
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u_int32_t perm;
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u_int32_t atime;
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u_int32_t mtime;
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};
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struct Stat
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{
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char *name;
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char *long_name;
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Attrib attrib;
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};
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int
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errno_to_portable(int unixerrno)
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{
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int ret = 0;
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switch (unixerrno) {
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case 0:
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ret = SSH_FX_OK;
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break;
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case ENOENT:
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case ENOTDIR:
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case EBADF:
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case ELOOP:
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ret = SSH_FX_NO_SUCH_FILE;
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break;
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case EPERM:
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case EACCES:
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case EFAULT:
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ret = SSH_FX_PERMISSION_DENIED;
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break;
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case ENAMETOOLONG:
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case EINVAL:
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ret = SSH_FX_BAD_MESSAGE;
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break;
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default:
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ret = SSH_FX_FAILURE;
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break;
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}
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return ret;
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}
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int
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flags_from_portable(int pflags)
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{
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int flags = 0;
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if (pflags & SSH_FXF_READ &&
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pflags & SSH_FXF_WRITE) {
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flags = O_RDWR;
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} else if (pflags & SSH_FXF_READ) {
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flags = O_RDONLY;
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} else if (pflags & SSH_FXF_WRITE) {
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flags = O_WRONLY;
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}
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if (pflags & SSH_FXF_CREAT)
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flags |= O_CREAT;
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if (pflags & SSH_FXF_TRUNC)
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flags |= O_TRUNC;
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if (pflags & SSH_FXF_EXCL)
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flags |= O_EXCL;
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return flags;
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}
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void
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attrib_clear(Attrib *a)
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{
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a->flags = 0;
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a->size_low = 0;
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a->size_high = 0;
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a->size = 0;
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a->uid = 0;
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a->gid = 0;
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a->perm = 0;
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a->atime = 0;
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a->mtime = 0;
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}
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Attrib *
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decode_attrib(Buffer *b)
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{
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static Attrib a;
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attrib_clear(&a);
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a.flags = buffer_get_int(b);
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if (a.flags & SSH_FXA_HAVE_SIZE) {
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a.size_high = buffer_get_int(b);
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a.size_low = buffer_get_int(b);
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a.size = (((u_int64_t) a.size_high) << 32) + a.size_low;
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}
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if (a.flags & SSH_FXA_HAVE_UGID) {
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a.uid = buffer_get_int(b);
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a.gid = buffer_get_int(b);
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}
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if (a.flags & SSH_FXA_HAVE_PERM) {
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a.perm = buffer_get_int(b);
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}
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if (a.flags & SSH_FXA_HAVE_TIME) {
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a.atime = buffer_get_int(b);
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a.mtime = buffer_get_int(b);
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}
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return &a;
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}
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void
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encode_attrib(Buffer *b, Attrib *a)
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{
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buffer_put_int(b, a->flags);
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if (a->flags & SSH_FXA_HAVE_SIZE) {
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buffer_put_int(b, a->size_high);
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buffer_put_int(b, a->size_low);
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}
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if (a->flags & SSH_FXA_HAVE_UGID) {
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buffer_put_int(b, a->uid);
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buffer_put_int(b, a->gid);
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}
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if (a->flags & SSH_FXA_HAVE_PERM) {
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buffer_put_int(b, a->perm);
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}
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if (a->flags & SSH_FXA_HAVE_TIME) {
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buffer_put_int(b, a->atime);
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buffer_put_int(b, a->mtime);
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}
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}
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Attrib *
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stat_to_attrib(struct stat *st)
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{
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static Attrib a;
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attrib_clear(&a);
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a.flags = 0;
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a.flags |= SSH_FXA_HAVE_SIZE;
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a.size = st->st_size;
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a.size_low = a.size;
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a.size_high = (u_int32_t) (a.size >> 32);
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a.flags |= SSH_FXA_HAVE_UGID;
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a.uid = st->st_uid;
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a.gid = st->st_gid;
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a.flags |= SSH_FXA_HAVE_PERM;
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a.perm = st->st_mode;
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a.flags |= SSH_FXA_HAVE_TIME;
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a.atime = st->st_atime;
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a.mtime = st->st_mtime;
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return &a;
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}
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Attrib *
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get_attrib(void)
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{
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return decode_attrib(&iqueue);
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}
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/* handle handles */
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typedef struct Handle Handle;
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struct Handle {
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int use;
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DIR *dirp;
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int fd;
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char *name;
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};
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enum {
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HANDLE_UNUSED,
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HANDLE_DIR,
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HANDLE_FILE
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};
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Handle handles[100];
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void
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handle_init(void)
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{
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int i;
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for(i = 0; i < sizeof(handles)/sizeof(Handle); i++)
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handles[i].use = HANDLE_UNUSED;
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}
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int
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handle_new(int use, char *name, int fd, DIR *dirp)
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{
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int i;
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for(i = 0; i < sizeof(handles)/sizeof(Handle); i++) {
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if (handles[i].use == HANDLE_UNUSED) {
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handles[i].use = use;
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handles[i].dirp = dirp;
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handles[i].fd = fd;
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handles[i].name = name;
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return i;
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}
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}
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return -1;
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}
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int
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handle_is_ok(int i, int type)
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{
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return i >= 0 && i < sizeof(handles)/sizeof(Handle) && handles[i].use == type;
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}
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int
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handle_to_string(int handle, char **stringp, int *hlenp)
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{
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char buf[1024];
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if (stringp == NULL || hlenp == NULL)
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return -1;
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snprintf(buf, sizeof buf, "%d", handle);
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*stringp = xstrdup(buf);
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*hlenp = strlen(*stringp);
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return 0;
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}
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int
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handle_from_string(char *handle, u_int hlen)
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{
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/* XXX OVERFLOW ? */
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char *ep;
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long lval = strtol(handle, &ep, 10);
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int val = lval;
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if (*ep != '\0')
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return -1;
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if (handle_is_ok(val, HANDLE_FILE) ||
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handle_is_ok(val, HANDLE_DIR))
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return val;
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return -1;
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}
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char *
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handle_to_name(int handle)
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{
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if (handle_is_ok(handle, HANDLE_DIR)||
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handle_is_ok(handle, HANDLE_FILE))
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return handles[handle].name;
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return NULL;
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}
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DIR *
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handle_to_dir(int handle)
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{
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if (handle_is_ok(handle, HANDLE_DIR))
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return handles[handle].dirp;
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return NULL;
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}
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int
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handle_to_fd(int handle)
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{
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if (handle_is_ok(handle, HANDLE_FILE))
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return handles[handle].fd;
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return -1;
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}
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int
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handle_close(int handle)
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{
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int ret = -1;
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if (handle_is_ok(handle, HANDLE_FILE)) {
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ret = close(handles[handle].fd);
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handles[handle].use = HANDLE_UNUSED;
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} else if (handle_is_ok(handle, HANDLE_DIR)) {
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ret = closedir(handles[handle].dirp);
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handles[handle].use = HANDLE_UNUSED;
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} else {
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errno = ENOENT;
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}
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return ret;
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}
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int
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get_handle(void)
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{
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char *handle;
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int val;
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u_int hlen;
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handle = get_string(&hlen);
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val = handle_from_string(handle, hlen);
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xfree(handle);
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return val;
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}
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/* send replies */
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void
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send_msg(Buffer *m)
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{
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int mlen = buffer_len(m);
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buffer_put_int(&oqueue, mlen);
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buffer_append(&oqueue, buffer_ptr(m), mlen);
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buffer_consume(m, mlen);
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}
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void
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send_status(u_int32_t id, u_int32_t error)
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{
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Buffer msg;
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TRACE("sent status id %d error %d", id, error);
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buffer_init(&msg);
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buffer_put_char(&msg, SSH_FXP_STATUS);
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buffer_put_int(&msg, id);
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buffer_put_int(&msg, error);
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send_msg(&msg);
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buffer_free(&msg);
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}
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void
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send_data_or_handle(char type, u_int32_t id, char *data, int dlen)
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{
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Buffer msg;
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buffer_init(&msg);
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buffer_put_char(&msg, type);
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buffer_put_int(&msg, id);
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buffer_put_string(&msg, data, dlen);
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send_msg(&msg);
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buffer_free(&msg);
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}
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void
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send_data(u_int32_t id, char *data, int dlen)
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{
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TRACE("sent data id %d len %d", id, dlen);
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send_data_or_handle(SSH_FXP_DATA, id, data, dlen);
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}
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void
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send_handle(u_int32_t id, int handle)
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{
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char *string;
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int hlen;
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handle_to_string(handle, &string, &hlen);
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TRACE("sent handle id %d handle %d", id, handle);
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send_data_or_handle(SSH_FXP_HANDLE, id, string, hlen);
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xfree(string);
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}
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void
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send_names(u_int32_t id, int count, Stat *stats)
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{
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Buffer msg;
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int i;
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buffer_init(&msg);
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buffer_put_char(&msg, SSH_FXP_NAME);
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buffer_put_int(&msg, id);
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buffer_put_int(&msg, count);
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TRACE("sent names id %d count %d", id, count);
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for (i = 0; i < count; i++) {
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buffer_put_cstring(&msg, stats[i].name);
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buffer_put_cstring(&msg, stats[i].long_name);
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encode_attrib(&msg, &stats[i].attrib);
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}
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send_msg(&msg);
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buffer_free(&msg);
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}
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void
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send_attrib(u_int32_t id, Attrib *a)
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{
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Buffer msg;
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TRACE("sent attrib id %d have 0x%x", id, a->flags);
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buffer_init(&msg);
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buffer_put_char(&msg, SSH_FXP_ATTRS);
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buffer_put_int(&msg, id);
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encode_attrib(&msg, a);
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send_msg(&msg);
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buffer_free(&msg);
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}
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/* parse incoming */
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void
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process_init(void)
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{
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Buffer msg;
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int version = buffer_get_int(&iqueue);
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TRACE("client version %d", version);
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buffer_init(&msg);
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buffer_put_char(&msg, SSH_FXP_VERSION);
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buffer_put_int(&msg, SSH_FILEXFER_VERSION);
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send_msg(&msg);
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buffer_free(&msg);
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}
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void
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process_open(void)
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{
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u_int32_t id, pflags;
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Attrib *a;
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char *name;
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int handle, fd, flags, mode, status = SSH_FX_FAILURE;
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id = get_int();
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name = get_string(NULL);
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pflags = get_int();
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a = get_attrib();
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flags = flags_from_portable(pflags);
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mode = (a->flags & SSH_FXA_HAVE_PERM) ? a->perm : 0666;
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TRACE("open id %d name %s flags %d mode 0%o", id, name, pflags, mode);
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fd = open(name, flags, mode);
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if (fd < 0) {
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status = errno_to_portable(errno);
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} else {
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handle = handle_new(HANDLE_FILE, xstrdup(name), fd, NULL);
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if (handle < 0) {
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close(fd);
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} else {
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send_handle(id, handle);
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status = SSH_FX_OK;
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}
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}
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if (status != SSH_FX_OK)
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send_status(id, status);
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xfree(name);
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}
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void
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process_close(void)
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{
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u_int32_t id;
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int handle, ret, status = SSH_FX_FAILURE;
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id = get_int();
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handle = get_handle();
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TRACE("close id %d handle %d", id, handle);
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ret = handle_close(handle);
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status = (ret == -1) ? errno_to_portable(errno) : SSH_FX_OK;
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send_status(id, status);
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}
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|
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void
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process_read(void)
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{
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char buf[64*1024];
|
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u_int32_t id, off_high, off_low, len;
|
|
int handle, fd, ret, status = SSH_FX_FAILURE;
|
|
u_int64_t off;
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id = get_int();
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handle = get_handle();
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off_high = get_int();
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off_low = get_int();
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|
len = get_int();
|
|
|
|
off = (((u_int64_t) off_high) << 32) + off_low;
|
|
TRACE("read id %d handle %d off %lld len %d", id, handle, off, len);
|
|
if (len > sizeof buf) {
|
|
len = sizeof buf;
|
|
log("read change len %d", len);
|
|
}
|
|
fd = handle_to_fd(handle);
|
|
if (fd >= 0) {
|
|
if (lseek(fd, off, SEEK_SET) < 0) {
|
|
error("process_read: seek failed");
|
|
status = errno_to_portable(errno);
|
|
} else {
|
|
ret = read(fd, buf, len);
|
|
if (ret < 0) {
|
|
status = errno_to_portable(errno);
|
|
} else if (ret == 0) {
|
|
status = SSH_FX_EOF;
|
|
} else {
|
|
send_data(id, buf, ret);
|
|
status = SSH_FX_OK;
|
|
}
|
|
}
|
|
}
|
|
if (status != SSH_FX_OK)
|
|
send_status(id, status);
|
|
}
|
|
|
|
void
|
|
process_write(void)
|
|
{
|
|
u_int32_t id, off_high, off_low;
|
|
u_int64_t off;
|
|
u_int len;
|
|
int handle, fd, ret, status = SSH_FX_FAILURE;
|
|
char *data;
|
|
|
|
id = get_int();
|
|
handle = get_handle();
|
|
off_high = get_int();
|
|
off_low = get_int();
|
|
data = get_string(&len);
|
|
|
|
off = (((u_int64_t) off_high) << 32) + off_low;
|
|
TRACE("write id %d handle %d off %lld len %d", id, handle, off, len);
|
|
fd = handle_to_fd(handle);
|
|
if (fd >= 0) {
|
|
if (lseek(fd, off, SEEK_SET) < 0) {
|
|
status = errno_to_portable(errno);
|
|
error("process_write: seek failed");
|
|
} else {
|
|
/* XXX ATOMICIO ? */
|
|
ret = write(fd, data, len);
|
|
if (ret == -1) {
|
|
error("process_write: write failed");
|
|
status = errno_to_portable(errno);
|
|
} else if (ret == len) {
|
|
status = SSH_FX_OK;
|
|
} else {
|
|
log("nothing at all written");
|
|
}
|
|
}
|
|
}
|
|
send_status(id, status);
|
|
xfree(data);
|
|
}
|
|
|
|
void
|
|
process_do_stat(int do_lstat)
|
|
{
|
|
Attrib *a;
|
|
struct stat st;
|
|
u_int32_t id;
|
|
char *name;
|
|
int ret, status = SSH_FX_FAILURE;
|
|
|
|
id = get_int();
|
|
name = get_string(NULL);
|
|
TRACE("%sstat id %d name %s", do_lstat ? "l" : "", id, name);
|
|
ret = do_lstat ? lstat(name, &st) : stat(name, &st);
|
|
if (ret < 0) {
|
|
status = errno_to_portable(errno);
|
|
} else {
|
|
a = stat_to_attrib(&st);
|
|
send_attrib(id, a);
|
|
status = SSH_FX_OK;
|
|
}
|
|
if (status != SSH_FX_OK)
|
|
send_status(id, status);
|
|
xfree(name);
|
|
}
|
|
|
|
void
|
|
process_stat(void)
|
|
{
|
|
process_do_stat(0);
|
|
}
|
|
|
|
void
|
|
process_lstat(void)
|
|
{
|
|
process_do_stat(1);
|
|
}
|
|
|
|
void
|
|
process_fstat(void)
|
|
{
|
|
Attrib *a;
|
|
struct stat st;
|
|
u_int32_t id;
|
|
int fd, ret, handle, status = SSH_FX_FAILURE;
|
|
|
|
id = get_int();
|
|
handle = get_handle();
|
|
TRACE("fstat id %d handle %d", id, handle);
|
|
fd = handle_to_fd(handle);
|
|
if (fd >= 0) {
|
|
ret = fstat(fd, &st);
|
|
if (ret < 0) {
|
|
status = errno_to_portable(errno);
|
|
} else {
|
|
a = stat_to_attrib(&st);
|
|
send_attrib(id, a);
|
|
status = SSH_FX_OK;
|
|
}
|
|
}
|
|
if (status != SSH_FX_OK)
|
|
send_status(id, status);
|
|
}
|
|
|
|
struct timeval *
|
|
attrib_to_tv(Attrib *a)
|
|
{
|
|
static struct timeval tv[2];
|
|
tv[0].tv_sec = a->atime;
|
|
tv[0].tv_usec = 0;
|
|
tv[1].tv_sec = a->mtime;
|
|
tv[1].tv_usec = 0;
|
|
return tv;
|
|
}
|
|
|
|
void
|
|
process_setstat(void)
|
|
{
|
|
Attrib *a;
|
|
u_int32_t id;
|
|
char *name;
|
|
int ret;
|
|
int status = SSH_FX_OK;
|
|
|
|
id = get_int();
|
|
name = get_string(NULL);
|
|
a = get_attrib();
|
|
TRACE("setstat id %d name %s", id, name);
|
|
if (a->flags & SSH_FXA_HAVE_PERM) {
|
|
ret = chmod(name, a->perm & 0777);
|
|
if (ret == -1)
|
|
status = errno_to_portable(errno);
|
|
}
|
|
if (a->flags & SSH_FXA_HAVE_TIME) {
|
|
ret = utimes(name, attrib_to_tv(a));
|
|
if (ret == -1)
|
|
status = errno_to_portable(errno);
|
|
}
|
|
send_status(id, status);
|
|
xfree(name);
|
|
}
|
|
|
|
void
|
|
process_fsetstat(void)
|
|
{
|
|
Attrib *a;
|
|
u_int32_t id;
|
|
int handle, fd, ret;
|
|
int status = SSH_FX_OK;
|
|
char *name;
|
|
|
|
id = get_int();
|
|
handle = get_handle();
|
|
a = get_attrib();
|
|
TRACE("fsetstat id %d handle %d", id, handle);
|
|
fd = handle_to_fd(handle);
|
|
name = handle_to_name(handle);
|
|
if ((fd < 0) || (name == NULL)) {
|
|
status = SSH_FX_FAILURE;
|
|
} else {
|
|
if (a->flags & SSH_FXA_HAVE_PERM) {
|
|
ret = fchmod(fd, a->perm & 0777);
|
|
if (ret == -1)
|
|
status = errno_to_portable(errno);
|
|
}
|
|
if (a->flags & SSH_FXA_HAVE_TIME) {
|
|
#ifdef HAVE_FUTIMES
|
|
ret = futimes(fd, attrib_to_tv(a));
|
|
#else
|
|
ret = utimes(name, attrib_to_tv(a));
|
|
#endif
|
|
if (ret == -1)
|
|
status = errno_to_portable(errno);
|
|
}
|
|
}
|
|
send_status(id, status);
|
|
}
|
|
|
|
void
|
|
process_opendir(void)
|
|
{
|
|
DIR *dirp = NULL;
|
|
char *path;
|
|
int handle, status = SSH_FX_FAILURE;
|
|
u_int32_t id;
|
|
|
|
id = get_int();
|
|
path = get_string(NULL);
|
|
TRACE("opendir id %d path %s", id, path);
|
|
dirp = opendir(path);
|
|
if (dirp == NULL) {
|
|
status = errno_to_portable(errno);
|
|
} else {
|
|
handle = handle_new(HANDLE_DIR, xstrdup(path), 0, dirp);
|
|
if (handle < 0) {
|
|
closedir(dirp);
|
|
} else {
|
|
send_handle(id, handle);
|
|
status = SSH_FX_OK;
|
|
}
|
|
|
|
}
|
|
if (status != SSH_FX_OK)
|
|
send_status(id, status);
|
|
xfree(path);
|
|
}
|
|
|
|
char *
|
|
ls_file(char *name, struct stat *st)
|
|
{
|
|
char buf[1024];
|
|
snprintf(buf, sizeof buf, "0%o %d %d %lld %d %s",
|
|
st->st_mode, st->st_uid, st->st_gid, (long long)st->st_size,(int) st->st_mtime,
|
|
name);
|
|
return xstrdup(buf);
|
|
}
|
|
|
|
void
|
|
process_readdir(void)
|
|
{
|
|
DIR *dirp;
|
|
struct dirent *dp;
|
|
char *path;
|
|
int handle;
|
|
u_int32_t id;
|
|
|
|
id = get_int();
|
|
handle = get_handle();
|
|
TRACE("readdir id %d handle %d", id, handle);
|
|
dirp = handle_to_dir(handle);
|
|
path = handle_to_name(handle);
|
|
if (dirp == NULL || path == NULL) {
|
|
send_status(id, SSH_FX_FAILURE);
|
|
} else {
|
|
Attrib *a;
|
|
struct stat st;
|
|
char pathname[1024];
|
|
Stat *stats;
|
|
int nstats = 10, count = 0, i;
|
|
stats = xmalloc(nstats * sizeof(Stat));
|
|
while ((dp = readdir(dirp)) != NULL) {
|
|
if (count >= nstats) {
|
|
nstats *= 2;
|
|
stats = xrealloc(stats, nstats * sizeof(Stat));
|
|
}
|
|
/* XXX OVERFLOW ? */
|
|
snprintf(pathname, sizeof pathname,
|
|
"%s/%s", path, dp->d_name);
|
|
if (lstat(pathname, &st) < 0)
|
|
continue;
|
|
a = stat_to_attrib(&st);
|
|
stats[count].attrib = *a;
|
|
stats[count].name = xstrdup(dp->d_name);
|
|
stats[count].long_name = ls_file(dp->d_name, &st);
|
|
count++;
|
|
/* send up to 100 entries in one message */
|
|
if (count == 100)
|
|
break;
|
|
}
|
|
send_names(id, count, stats);
|
|
for(i = 0; i < count; i++) {
|
|
xfree(stats[i].name);
|
|
xfree(stats[i].long_name);
|
|
}
|
|
xfree(stats);
|
|
}
|
|
}
|
|
|
|
void
|
|
process_remove(void)
|
|
{
|
|
char *name;
|
|
u_int32_t id;
|
|
int status = SSH_FX_FAILURE;
|
|
int ret;
|
|
|
|
id = get_int();
|
|
name = get_string(NULL);
|
|
TRACE("remove id %d name %s", id, name);
|
|
ret = remove(name);
|
|
status = (ret == -1) ? errno_to_portable(errno) : SSH_FX_OK;
|
|
send_status(id, status);
|
|
xfree(name);
|
|
}
|
|
|
|
void
|
|
process_mkdir(void)
|
|
{
|
|
Attrib *a;
|
|
u_int32_t id;
|
|
char *name;
|
|
int ret, mode, status = SSH_FX_FAILURE;
|
|
|
|
id = get_int();
|
|
name = get_string(NULL);
|
|
a = get_attrib();
|
|
mode = (a->flags & SSH_FXA_HAVE_PERM) ? a->perm & 0777 : 0777;
|
|
TRACE("mkdir id %d name %s mode 0%o", id, name, mode);
|
|
ret = mkdir(name, mode);
|
|
status = (ret == -1) ? errno_to_portable(errno) : SSH_FX_OK;
|
|
send_status(id, status);
|
|
xfree(name);
|
|
}
|
|
|
|
void
|
|
process_rmdir(void)
|
|
{
|
|
u_int32_t id;
|
|
char *name;
|
|
int ret, status;
|
|
|
|
id = get_int();
|
|
name = get_string(NULL);
|
|
TRACE("rmdir id %d name %s", id, name);
|
|
ret = rmdir(name);
|
|
status = (ret == -1) ? errno_to_portable(errno) : SSH_FX_OK;
|
|
send_status(id, status);
|
|
xfree(name);
|
|
}
|
|
|
|
void
|
|
process_realpath(void)
|
|
{
|
|
char resolvedname[MAXPATHLEN];
|
|
u_int32_t id;
|
|
char *path;
|
|
|
|
id = get_int();
|
|
path = get_string(NULL);
|
|
TRACE("realpath id %d path %s", id, path);
|
|
if (realpath(path, resolvedname) == NULL) {
|
|
send_status(id, errno_to_portable(errno));
|
|
} else {
|
|
Stat s;
|
|
attrib_clear(&s.attrib);
|
|
s.name = s.long_name = resolvedname;
|
|
send_names(id, 1, &s);
|
|
}
|
|
xfree(path);
|
|
}
|
|
|
|
void
|
|
process_rename(void)
|
|
{
|
|
u_int32_t id;
|
|
char *oldpath, *newpath;
|
|
int ret, status;
|
|
|
|
id = get_int();
|
|
oldpath = get_string(NULL);
|
|
newpath = get_string(NULL);
|
|
TRACE("rename id %d old %s new %s", id, oldpath, newpath);
|
|
ret = rename(oldpath, newpath);
|
|
status = (ret == -1) ? errno_to_portable(errno) : SSH_FX_OK;
|
|
send_status(id, status);
|
|
xfree(oldpath);
|
|
xfree(newpath);
|
|
}
|
|
|
|
|
|
/* stolen from ssh-agent */
|
|
|
|
void
|
|
process(void)
|
|
{
|
|
unsigned int msg_len;
|
|
unsigned int type;
|
|
unsigned char *cp;
|
|
|
|
if (buffer_len(&iqueue) < 5)
|
|
return; /* Incomplete message. */
|
|
cp = (unsigned char *) buffer_ptr(&iqueue);
|
|
msg_len = GET_32BIT(cp);
|
|
if (msg_len > 256 * 1024) {
|
|
error("bad message ");
|
|
exit(11);
|
|
}
|
|
if (buffer_len(&iqueue) < msg_len + 4)
|
|
return;
|
|
buffer_consume(&iqueue, 4);
|
|
type = buffer_get_char(&iqueue);
|
|
switch (type) {
|
|
case SSH_FXP_INIT:
|
|
process_init();
|
|
break;
|
|
case SSH_FXP_OPEN:
|
|
process_open();
|
|
break;
|
|
case SSH_FXP_CLOSE:
|
|
process_close();
|
|
break;
|
|
case SSH_FXP_READ:
|
|
process_read();
|
|
break;
|
|
case SSH_FXP_WRITE:
|
|
process_write();
|
|
break;
|
|
case SSH_FXP_LSTAT:
|
|
process_lstat();
|
|
break;
|
|
case SSH_FXP_FSTAT:
|
|
process_fstat();
|
|
break;
|
|
case SSH_FXP_SETSTAT:
|
|
process_setstat();
|
|
break;
|
|
case SSH_FXP_FSETSTAT:
|
|
process_fsetstat();
|
|
break;
|
|
case SSH_FXP_OPENDIR:
|
|
process_opendir();
|
|
break;
|
|
case SSH_FXP_READDIR:
|
|
process_readdir();
|
|
break;
|
|
case SSH_FXP_REMOVE:
|
|
process_remove();
|
|
break;
|
|
case SSH_FXP_MKDIR:
|
|
process_mkdir();
|
|
break;
|
|
case SSH_FXP_RMDIR:
|
|
process_rmdir();
|
|
break;
|
|
case SSH_FXP_REALPATH:
|
|
process_realpath();
|
|
break;
|
|
case SSH_FXP_STAT:
|
|
process_stat();
|
|
break;
|
|
case SSH_FXP_RENAME:
|
|
process_rename();
|
|
break;
|
|
default:
|
|
error("Unknown message %d", type);
|
|
break;
|
|
}
|
|
}
|
|
|
|
int
|
|
main(int ac, char **av)
|
|
{
|
|
fd_set rset, wset;
|
|
int in, out, max;
|
|
ssize_t len, olen;
|
|
|
|
handle_init();
|
|
|
|
in = dup(STDIN_FILENO);
|
|
out = dup(STDOUT_FILENO);
|
|
|
|
max = 0;
|
|
if (in > max)
|
|
max = in;
|
|
if (out > max)
|
|
max = out;
|
|
|
|
buffer_init(&iqueue);
|
|
buffer_init(&oqueue);
|
|
|
|
for (;;) {
|
|
FD_ZERO(&rset);
|
|
FD_ZERO(&wset);
|
|
|
|
FD_SET(in, &rset);
|
|
olen = buffer_len(&oqueue);
|
|
if (olen > 0)
|
|
FD_SET(out, &wset);
|
|
|
|
if (select(max+1, &rset, &wset, NULL, NULL) < 0) {
|
|
if (errno == EINTR)
|
|
continue;
|
|
exit(2);
|
|
}
|
|
|
|
/* copy stdin to iqueue */
|
|
if (FD_ISSET(in, &rset)) {
|
|
char buf[4*4096];
|
|
len = read(in, buf, sizeof buf);
|
|
if (len == 0) {
|
|
debug("read eof");
|
|
exit(0);
|
|
} else if (len < 0) {
|
|
error("read error");
|
|
exit(1);
|
|
} else {
|
|
buffer_append(&iqueue, buf, len);
|
|
}
|
|
}
|
|
/* send oqueue to stdout */
|
|
if (FD_ISSET(out, &wset)) {
|
|
len = write(out, buffer_ptr(&oqueue), olen);
|
|
if (len < 0) {
|
|
error("write error");
|
|
exit(1);
|
|
} else {
|
|
buffer_consume(&oqueue, len);
|
|
}
|
|
}
|
|
/* process requests from client */
|
|
process();
|
|
}
|
|
}
|