OpenSSH v8.8p1 was motivated primarily by a security update and deprecation of RSA/SHA1 signatures. It also has a few minor bug fixes. The security update was already applied to FreeBSD as an independent change, and the RSA/SHA1 deprecation is excluded from this commit but will immediately follow. MFC after: 1 month Relnotes: Yes Sponsored by: The FreeBSD Foundation
2634 lines
68 KiB
C
2634 lines
68 KiB
C
/* $OpenBSD: sftp-client.c,v 1.155 2021/09/03 05:12:25 dtucker Exp $ */
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/*
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* Copyright (c) 2001-2004 Damien Miller <djm@openbsd.org>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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/* XXX: memleaks */
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/* XXX: signed vs unsigned */
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/* XXX: remove all logging, only return status codes */
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/* XXX: copy between two remote sites */
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#include "includes.h"
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#include <sys/types.h>
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#ifdef HAVE_SYS_STATVFS_H
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#include <sys/statvfs.h>
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#endif
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#include "openbsd-compat/sys-queue.h"
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#ifdef HAVE_SYS_STAT_H
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# include <sys/stat.h>
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#endif
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#ifdef HAVE_SYS_TIME_H
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# include <sys/time.h>
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#endif
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#include <sys/uio.h>
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#include <dirent.h>
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#include <errno.h>
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#ifdef HAVE_POLL_H
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#include <poll.h>
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#else
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# ifdef HAVE_SYS_POLL_H
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# include <sys/poll.h>
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# endif
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#endif
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#include <fcntl.h>
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#include <signal.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "xmalloc.h"
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#include "ssherr.h"
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#include "sshbuf.h"
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#include "log.h"
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#include "atomicio.h"
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#include "progressmeter.h"
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#include "misc.h"
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#include "utf8.h"
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#include "sftp.h"
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#include "sftp-common.h"
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#include "sftp-client.h"
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extern volatile sig_atomic_t interrupted;
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extern int showprogress;
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/* Default size of buffer for up/download */
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#define DEFAULT_COPY_BUFLEN 32768
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/* Default number of concurrent outstanding requests */
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#define DEFAULT_NUM_REQUESTS 64
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/* Minimum amount of data to read at a time */
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#define MIN_READ_SIZE 512
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/* Maximum depth to descend in directory trees */
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#define MAX_DIR_DEPTH 64
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/* Directory separator characters */
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#ifdef HAVE_CYGWIN
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# define SFTP_DIRECTORY_CHARS "/\\"
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#else /* HAVE_CYGWIN */
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# define SFTP_DIRECTORY_CHARS "/"
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#endif /* HAVE_CYGWIN */
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struct sftp_conn {
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int fd_in;
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int fd_out;
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u_int download_buflen;
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u_int upload_buflen;
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u_int num_requests;
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u_int version;
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u_int msg_id;
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#define SFTP_EXT_POSIX_RENAME 0x00000001
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#define SFTP_EXT_STATVFS 0x00000002
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#define SFTP_EXT_FSTATVFS 0x00000004
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#define SFTP_EXT_HARDLINK 0x00000008
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#define SFTP_EXT_FSYNC 0x00000010
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#define SFTP_EXT_LSETSTAT 0x00000020
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#define SFTP_EXT_LIMITS 0x00000040
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#define SFTP_EXT_PATH_EXPAND 0x00000080
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u_int exts;
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u_int64_t limit_kbps;
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struct bwlimit bwlimit_in, bwlimit_out;
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};
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/* Tracks in-progress requests during file transfers */
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struct request {
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u_int id;
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size_t len;
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u_int64_t offset;
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TAILQ_ENTRY(request) tq;
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};
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TAILQ_HEAD(requests, request);
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static u_char *
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get_handle(struct sftp_conn *conn, u_int expected_id, size_t *len,
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const char *errfmt, ...) __attribute__((format(printf, 4, 5)));
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static struct request *
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request_enqueue(struct requests *requests, u_int id, size_t len,
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uint64_t offset)
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{
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struct request *req;
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req = xcalloc(1, sizeof(*req));
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req->id = id;
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req->len = len;
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req->offset = offset;
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TAILQ_INSERT_TAIL(requests, req, tq);
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return req;
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}
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static struct request *
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request_find(struct requests *requests, u_int id)
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{
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struct request *req;
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for (req = TAILQ_FIRST(requests);
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req != NULL && req->id != id;
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req = TAILQ_NEXT(req, tq))
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;
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return req;
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}
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/* ARGSUSED */
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static int
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sftpio(void *_bwlimit, size_t amount)
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{
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struct bwlimit *bwlimit = (struct bwlimit *)_bwlimit;
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refresh_progress_meter(0);
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if (bwlimit != NULL)
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bandwidth_limit(bwlimit, amount);
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return 0;
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}
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static void
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send_msg(struct sftp_conn *conn, struct sshbuf *m)
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{
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u_char mlen[4];
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struct iovec iov[2];
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if (sshbuf_len(m) > SFTP_MAX_MSG_LENGTH)
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fatal("Outbound message too long %zu", sshbuf_len(m));
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/* Send length first */
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put_u32(mlen, sshbuf_len(m));
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iov[0].iov_base = mlen;
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iov[0].iov_len = sizeof(mlen);
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iov[1].iov_base = (u_char *)sshbuf_ptr(m);
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iov[1].iov_len = sshbuf_len(m);
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if (atomiciov6(writev, conn->fd_out, iov, 2, sftpio,
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conn->limit_kbps > 0 ? &conn->bwlimit_out : NULL) !=
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sshbuf_len(m) + sizeof(mlen))
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fatal("Couldn't send packet: %s", strerror(errno));
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sshbuf_reset(m);
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}
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static void
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get_msg_extended(struct sftp_conn *conn, struct sshbuf *m, int initial)
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{
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u_int msg_len;
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u_char *p;
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int r;
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sshbuf_reset(m);
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if ((r = sshbuf_reserve(m, 4, &p)) != 0)
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fatal_fr(r, "reserve");
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if (atomicio6(read, conn->fd_in, p, 4, sftpio,
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conn->limit_kbps > 0 ? &conn->bwlimit_in : NULL) != 4) {
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if (errno == EPIPE || errno == ECONNRESET)
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fatal("Connection closed");
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else
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fatal("Couldn't read packet: %s", strerror(errno));
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}
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if ((r = sshbuf_get_u32(m, &msg_len)) != 0)
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fatal_fr(r, "sshbuf_get_u32");
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if (msg_len > SFTP_MAX_MSG_LENGTH) {
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do_log2(initial ? SYSLOG_LEVEL_ERROR : SYSLOG_LEVEL_FATAL,
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"Received message too long %u", msg_len);
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fatal("Ensure the remote shell produces no output "
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"for non-interactive sessions.");
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}
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if ((r = sshbuf_reserve(m, msg_len, &p)) != 0)
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fatal_fr(r, "reserve");
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if (atomicio6(read, conn->fd_in, p, msg_len, sftpio,
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conn->limit_kbps > 0 ? &conn->bwlimit_in : NULL)
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!= msg_len) {
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if (errno == EPIPE)
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fatal("Connection closed");
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else
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fatal("Read packet: %s", strerror(errno));
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}
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}
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static void
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get_msg(struct sftp_conn *conn, struct sshbuf *m)
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{
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get_msg_extended(conn, m, 0);
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}
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static void
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send_string_request(struct sftp_conn *conn, u_int id, u_int code, const char *s,
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u_int len)
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{
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struct sshbuf *msg;
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int r;
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if ((msg = sshbuf_new()) == NULL)
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fatal_f("sshbuf_new failed");
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if ((r = sshbuf_put_u8(msg, code)) != 0 ||
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(r = sshbuf_put_u32(msg, id)) != 0 ||
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(r = sshbuf_put_string(msg, s, len)) != 0)
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fatal_fr(r, "compose");
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send_msg(conn, msg);
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debug3("Sent message fd %d T:%u I:%u", conn->fd_out, code, id);
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sshbuf_free(msg);
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}
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static void
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send_string_attrs_request(struct sftp_conn *conn, u_int id, u_int code,
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const void *s, u_int len, Attrib *a)
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{
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struct sshbuf *msg;
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int r;
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if ((msg = sshbuf_new()) == NULL)
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fatal_f("sshbuf_new failed");
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if ((r = sshbuf_put_u8(msg, code)) != 0 ||
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(r = sshbuf_put_u32(msg, id)) != 0 ||
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(r = sshbuf_put_string(msg, s, len)) != 0 ||
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(r = encode_attrib(msg, a)) != 0)
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fatal_fr(r, "compose");
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send_msg(conn, msg);
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debug3("Sent message fd %d T:%u I:%u F:0x%04x M:%05o",
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conn->fd_out, code, id, a->flags, a->perm);
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sshbuf_free(msg);
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}
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static u_int
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get_status(struct sftp_conn *conn, u_int expected_id)
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{
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struct sshbuf *msg;
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u_char type;
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u_int id, status;
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int r;
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if ((msg = sshbuf_new()) == NULL)
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fatal_f("sshbuf_new failed");
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get_msg(conn, msg);
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if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
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(r = sshbuf_get_u32(msg, &id)) != 0)
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fatal_fr(r, "compose");
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if (id != expected_id)
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fatal("ID mismatch (%u != %u)", id, expected_id);
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if (type != SSH2_FXP_STATUS)
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fatal("Expected SSH2_FXP_STATUS(%u) packet, got %u",
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SSH2_FXP_STATUS, type);
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if ((r = sshbuf_get_u32(msg, &status)) != 0)
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fatal_fr(r, "parse");
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sshbuf_free(msg);
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debug3("SSH2_FXP_STATUS %u", status);
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return status;
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}
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static u_char *
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get_handle(struct sftp_conn *conn, u_int expected_id, size_t *len,
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const char *errfmt, ...)
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{
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struct sshbuf *msg;
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u_int id, status;
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u_char type;
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u_char *handle;
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char errmsg[256];
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va_list args;
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int r;
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va_start(args, errfmt);
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if (errfmt != NULL)
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vsnprintf(errmsg, sizeof(errmsg), errfmt, args);
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va_end(args);
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if ((msg = sshbuf_new()) == NULL)
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fatal_f("sshbuf_new failed");
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get_msg(conn, msg);
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if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
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(r = sshbuf_get_u32(msg, &id)) != 0)
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fatal_fr(r, "parse");
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if (id != expected_id)
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fatal("%s: ID mismatch (%u != %u)",
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errfmt == NULL ? __func__ : errmsg, id, expected_id);
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if (type == SSH2_FXP_STATUS) {
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if ((r = sshbuf_get_u32(msg, &status)) != 0)
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fatal_fr(r, "parse status");
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if (errfmt != NULL)
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error("%s: %s", errmsg, fx2txt(status));
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sshbuf_free(msg);
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return(NULL);
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} else if (type != SSH2_FXP_HANDLE)
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fatal("%s: Expected SSH2_FXP_HANDLE(%u) packet, got %u",
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errfmt == NULL ? __func__ : errmsg, SSH2_FXP_HANDLE, type);
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if ((r = sshbuf_get_string(msg, &handle, len)) != 0)
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fatal_fr(r, "parse handle");
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sshbuf_free(msg);
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return handle;
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}
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/* XXX returing &static is error-prone. Refactor to fill *Attrib argument */
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static Attrib *
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get_decode_stat(struct sftp_conn *conn, u_int expected_id, int quiet)
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{
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struct sshbuf *msg;
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u_int id;
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u_char type;
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int r;
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static Attrib a;
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if ((msg = sshbuf_new()) == NULL)
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fatal_f("sshbuf_new failed");
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get_msg(conn, msg);
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if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
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(r = sshbuf_get_u32(msg, &id)) != 0)
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fatal_fr(r, "parse");
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if (id != expected_id)
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fatal("ID mismatch (%u != %u)", id, expected_id);
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if (type == SSH2_FXP_STATUS) {
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u_int status;
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if ((r = sshbuf_get_u32(msg, &status)) != 0)
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fatal_fr(r, "parse status");
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if (quiet)
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debug("Couldn't stat remote file: %s", fx2txt(status));
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else
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error("Couldn't stat remote file: %s", fx2txt(status));
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sshbuf_free(msg);
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return(NULL);
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} else if (type != SSH2_FXP_ATTRS) {
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fatal("Expected SSH2_FXP_ATTRS(%u) packet, got %u",
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SSH2_FXP_ATTRS, type);
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}
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if ((r = decode_attrib(msg, &a)) != 0) {
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error_fr(r, "decode_attrib");
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sshbuf_free(msg);
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return NULL;
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}
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debug3("Recevied stat reply T:%u I:%u F:0x%04x M:%05o",
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type, id, a.flags, a.perm);
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sshbuf_free(msg);
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return &a;
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}
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static int
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get_decode_statvfs(struct sftp_conn *conn, struct sftp_statvfs *st,
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u_int expected_id, int quiet)
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{
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struct sshbuf *msg;
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u_char type;
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u_int id;
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u_int64_t flag;
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int r;
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if ((msg = sshbuf_new()) == NULL)
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fatal_f("sshbuf_new failed");
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get_msg(conn, msg);
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if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
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(r = sshbuf_get_u32(msg, &id)) != 0)
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fatal_fr(r, "parse");
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debug3("Received statvfs reply T:%u I:%u", type, id);
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if (id != expected_id)
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fatal("ID mismatch (%u != %u)", id, expected_id);
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if (type == SSH2_FXP_STATUS) {
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u_int status;
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if ((r = sshbuf_get_u32(msg, &status)) != 0)
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fatal_fr(r, "parse status");
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if (quiet)
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debug("Couldn't statvfs: %s", fx2txt(status));
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else
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error("Couldn't statvfs: %s", fx2txt(status));
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sshbuf_free(msg);
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return -1;
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} else if (type != SSH2_FXP_EXTENDED_REPLY) {
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fatal("Expected SSH2_FXP_EXTENDED_REPLY(%u) packet, got %u",
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SSH2_FXP_EXTENDED_REPLY, type);
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}
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memset(st, 0, sizeof(*st));
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if ((r = sshbuf_get_u64(msg, &st->f_bsize)) != 0 ||
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(r = sshbuf_get_u64(msg, &st->f_frsize)) != 0 ||
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(r = sshbuf_get_u64(msg, &st->f_blocks)) != 0 ||
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(r = sshbuf_get_u64(msg, &st->f_bfree)) != 0 ||
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(r = sshbuf_get_u64(msg, &st->f_bavail)) != 0 ||
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(r = sshbuf_get_u64(msg, &st->f_files)) != 0 ||
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(r = sshbuf_get_u64(msg, &st->f_ffree)) != 0 ||
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(r = sshbuf_get_u64(msg, &st->f_favail)) != 0 ||
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(r = sshbuf_get_u64(msg, &st->f_fsid)) != 0 ||
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(r = sshbuf_get_u64(msg, &flag)) != 0 ||
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(r = sshbuf_get_u64(msg, &st->f_namemax)) != 0)
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fatal_fr(r, "parse statvfs");
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st->f_flag = (flag & SSH2_FXE_STATVFS_ST_RDONLY) ? ST_RDONLY : 0;
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st->f_flag |= (flag & SSH2_FXE_STATVFS_ST_NOSUID) ? ST_NOSUID : 0;
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sshbuf_free(msg);
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return 0;
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}
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struct sftp_conn *
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do_init(int fd_in, int fd_out, u_int transfer_buflen, u_int num_requests,
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u_int64_t limit_kbps)
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{
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u_char type;
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struct sshbuf *msg;
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struct sftp_conn *ret;
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int r;
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ret = xcalloc(1, sizeof(*ret));
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ret->msg_id = 1;
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ret->fd_in = fd_in;
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ret->fd_out = fd_out;
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ret->download_buflen = ret->upload_buflen =
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transfer_buflen ? transfer_buflen : DEFAULT_COPY_BUFLEN;
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ret->num_requests =
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num_requests ? num_requests : DEFAULT_NUM_REQUESTS;
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ret->exts = 0;
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ret->limit_kbps = 0;
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if ((msg = sshbuf_new()) == NULL)
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fatal_f("sshbuf_new failed");
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if ((r = sshbuf_put_u8(msg, SSH2_FXP_INIT)) != 0 ||
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(r = sshbuf_put_u32(msg, SSH2_FILEXFER_VERSION)) != 0)
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fatal_fr(r, "parse");
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send_msg(ret, msg);
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get_msg_extended(ret, msg, 1);
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/* Expecting a VERSION reply */
|
|
if ((r = sshbuf_get_u8(msg, &type)) != 0)
|
|
fatal_fr(r, "parse type");
|
|
if (type != SSH2_FXP_VERSION) {
|
|
error("Invalid packet back from SSH2_FXP_INIT (type %u)",
|
|
type);
|
|
sshbuf_free(msg);
|
|
free(ret);
|
|
return(NULL);
|
|
}
|
|
if ((r = sshbuf_get_u32(msg, &ret->version)) != 0)
|
|
fatal_fr(r, "parse version");
|
|
|
|
debug2("Remote version: %u", ret->version);
|
|
|
|
/* Check for extensions */
|
|
while (sshbuf_len(msg) > 0) {
|
|
char *name;
|
|
u_char *value;
|
|
size_t vlen;
|
|
int known = 0;
|
|
|
|
if ((r = sshbuf_get_cstring(msg, &name, NULL)) != 0 ||
|
|
(r = sshbuf_get_string(msg, &value, &vlen)) != 0)
|
|
fatal_fr(r, "parse extension");
|
|
if (strcmp(name, "posix-rename@openssh.com") == 0 &&
|
|
strcmp((char *)value, "1") == 0) {
|
|
ret->exts |= SFTP_EXT_POSIX_RENAME;
|
|
known = 1;
|
|
} else if (strcmp(name, "statvfs@openssh.com") == 0 &&
|
|
strcmp((char *)value, "2") == 0) {
|
|
ret->exts |= SFTP_EXT_STATVFS;
|
|
known = 1;
|
|
} else if (strcmp(name, "fstatvfs@openssh.com") == 0 &&
|
|
strcmp((char *)value, "2") == 0) {
|
|
ret->exts |= SFTP_EXT_FSTATVFS;
|
|
known = 1;
|
|
} else if (strcmp(name, "hardlink@openssh.com") == 0 &&
|
|
strcmp((char *)value, "1") == 0) {
|
|
ret->exts |= SFTP_EXT_HARDLINK;
|
|
known = 1;
|
|
} else if (strcmp(name, "fsync@openssh.com") == 0 &&
|
|
strcmp((char *)value, "1") == 0) {
|
|
ret->exts |= SFTP_EXT_FSYNC;
|
|
known = 1;
|
|
} else if (strcmp(name, "lsetstat@openssh.com") == 0 &&
|
|
strcmp((char *)value, "1") == 0) {
|
|
ret->exts |= SFTP_EXT_LSETSTAT;
|
|
known = 1;
|
|
} else if (strcmp(name, "limits@openssh.com") == 0 &&
|
|
strcmp((char *)value, "1") == 0) {
|
|
ret->exts |= SFTP_EXT_LIMITS;
|
|
known = 1;
|
|
} else if (strcmp(name, "expand-path@openssh.com") == 0 &&
|
|
strcmp((char *)value, "1") == 0) {
|
|
ret->exts |= SFTP_EXT_PATH_EXPAND;
|
|
known = 1;
|
|
}
|
|
if (known) {
|
|
debug2("Server supports extension \"%s\" revision %s",
|
|
name, value);
|
|
} else {
|
|
debug2("Unrecognised server extension \"%s\"", name);
|
|
}
|
|
free(name);
|
|
free(value);
|
|
}
|
|
|
|
sshbuf_free(msg);
|
|
|
|
/* Query the server for its limits */
|
|
if (ret->exts & SFTP_EXT_LIMITS) {
|
|
struct sftp_limits limits;
|
|
if (do_limits(ret, &limits) != 0)
|
|
fatal_f("limits failed");
|
|
|
|
/* If the caller did not specify, find a good value */
|
|
if (transfer_buflen == 0) {
|
|
ret->download_buflen = limits.read_length;
|
|
ret->upload_buflen = limits.write_length;
|
|
debug("Using server download size %u", ret->download_buflen);
|
|
debug("Using server upload size %u", ret->upload_buflen);
|
|
}
|
|
|
|
/* Use the server limit to scale down our value only */
|
|
if (num_requests == 0 && limits.open_handles) {
|
|
ret->num_requests =
|
|
MINIMUM(DEFAULT_NUM_REQUESTS, limits.open_handles);
|
|
debug("Server handle limit %llu; using %u",
|
|
(unsigned long long)limits.open_handles,
|
|
ret->num_requests);
|
|
}
|
|
}
|
|
|
|
/* Some filexfer v.0 servers don't support large packets */
|
|
if (ret->version == 0) {
|
|
ret->download_buflen = MINIMUM(ret->download_buflen, 20480);
|
|
ret->upload_buflen = MINIMUM(ret->upload_buflen, 20480);
|
|
}
|
|
|
|
ret->limit_kbps = limit_kbps;
|
|
if (ret->limit_kbps > 0) {
|
|
bandwidth_limit_init(&ret->bwlimit_in, ret->limit_kbps,
|
|
ret->download_buflen);
|
|
bandwidth_limit_init(&ret->bwlimit_out, ret->limit_kbps,
|
|
ret->upload_buflen);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
u_int
|
|
sftp_proto_version(struct sftp_conn *conn)
|
|
{
|
|
return conn->version;
|
|
}
|
|
|
|
int
|
|
do_limits(struct sftp_conn *conn, struct sftp_limits *limits)
|
|
{
|
|
u_int id, msg_id;
|
|
u_char type;
|
|
struct sshbuf *msg;
|
|
int r;
|
|
|
|
if ((conn->exts & SFTP_EXT_LIMITS) == 0) {
|
|
error("Server does not support limits@openssh.com extension");
|
|
return -1;
|
|
}
|
|
|
|
if ((msg = sshbuf_new()) == NULL)
|
|
fatal_f("sshbuf_new failed");
|
|
|
|
id = conn->msg_id++;
|
|
if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
|
|
(r = sshbuf_put_u32(msg, id)) != 0 ||
|
|
(r = sshbuf_put_cstring(msg, "limits@openssh.com")) != 0)
|
|
fatal_fr(r, "compose");
|
|
send_msg(conn, msg);
|
|
debug3("Sent message limits@openssh.com I:%u", id);
|
|
|
|
get_msg(conn, msg);
|
|
|
|
if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
|
|
(r = sshbuf_get_u32(msg, &msg_id)) != 0)
|
|
fatal_fr(r, "parse");
|
|
|
|
debug3("Received limits reply T:%u I:%u", type, msg_id);
|
|
if (id != msg_id)
|
|
fatal("ID mismatch (%u != %u)", msg_id, id);
|
|
if (type != SSH2_FXP_EXTENDED_REPLY) {
|
|
debug_f("expected SSH2_FXP_EXTENDED_REPLY(%u) packet, got %u",
|
|
SSH2_FXP_EXTENDED_REPLY, type);
|
|
/* Disable the limits extension */
|
|
conn->exts &= ~SFTP_EXT_LIMITS;
|
|
sshbuf_free(msg);
|
|
return 0;
|
|
}
|
|
|
|
memset(limits, 0, sizeof(*limits));
|
|
if ((r = sshbuf_get_u64(msg, &limits->packet_length)) != 0 ||
|
|
(r = sshbuf_get_u64(msg, &limits->read_length)) != 0 ||
|
|
(r = sshbuf_get_u64(msg, &limits->write_length)) != 0 ||
|
|
(r = sshbuf_get_u64(msg, &limits->open_handles)) != 0)
|
|
fatal_fr(r, "parse limits");
|
|
|
|
sshbuf_free(msg);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
do_close(struct sftp_conn *conn, const u_char *handle, u_int handle_len)
|
|
{
|
|
u_int id, status;
|
|
struct sshbuf *msg;
|
|
int r;
|
|
|
|
if ((msg = sshbuf_new()) == NULL)
|
|
fatal_f("sshbuf_new failed");
|
|
|
|
id = conn->msg_id++;
|
|
if ((r = sshbuf_put_u8(msg, SSH2_FXP_CLOSE)) != 0 ||
|
|
(r = sshbuf_put_u32(msg, id)) != 0 ||
|
|
(r = sshbuf_put_string(msg, handle, handle_len)) != 0)
|
|
fatal_fr(r, "parse");
|
|
send_msg(conn, msg);
|
|
debug3("Sent message SSH2_FXP_CLOSE I:%u", id);
|
|
|
|
status = get_status(conn, id);
|
|
if (status != SSH2_FX_OK)
|
|
error("Couldn't close file: %s", fx2txt(status));
|
|
|
|
sshbuf_free(msg);
|
|
|
|
return status == SSH2_FX_OK ? 0 : -1;
|
|
}
|
|
|
|
|
|
static int
|
|
do_lsreaddir(struct sftp_conn *conn, const char *path, int print_flag,
|
|
SFTP_DIRENT ***dir)
|
|
{
|
|
struct sshbuf *msg;
|
|
u_int count, id, i, expected_id, ents = 0;
|
|
size_t handle_len;
|
|
u_char type, *handle;
|
|
int status = SSH2_FX_FAILURE;
|
|
int r;
|
|
|
|
if (dir)
|
|
*dir = NULL;
|
|
|
|
id = conn->msg_id++;
|
|
|
|
if ((msg = sshbuf_new()) == NULL)
|
|
fatal_f("sshbuf_new failed");
|
|
if ((r = sshbuf_put_u8(msg, SSH2_FXP_OPENDIR)) != 0 ||
|
|
(r = sshbuf_put_u32(msg, id)) != 0 ||
|
|
(r = sshbuf_put_cstring(msg, path)) != 0)
|
|
fatal_fr(r, "compose OPENDIR");
|
|
send_msg(conn, msg);
|
|
|
|
handle = get_handle(conn, id, &handle_len,
|
|
"remote readdir(\"%s\")", path);
|
|
if (handle == NULL) {
|
|
sshbuf_free(msg);
|
|
return -1;
|
|
}
|
|
|
|
if (dir) {
|
|
ents = 0;
|
|
*dir = xcalloc(1, sizeof(**dir));
|
|
(*dir)[0] = NULL;
|
|
}
|
|
|
|
for (; !interrupted;) {
|
|
id = expected_id = conn->msg_id++;
|
|
|
|
debug3("Sending SSH2_FXP_READDIR I:%u", id);
|
|
|
|
sshbuf_reset(msg);
|
|
if ((r = sshbuf_put_u8(msg, SSH2_FXP_READDIR)) != 0 ||
|
|
(r = sshbuf_put_u32(msg, id)) != 0 ||
|
|
(r = sshbuf_put_string(msg, handle, handle_len)) != 0)
|
|
fatal_fr(r, "compose READDIR");
|
|
send_msg(conn, msg);
|
|
|
|
sshbuf_reset(msg);
|
|
|
|
get_msg(conn, msg);
|
|
|
|
if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
|
|
(r = sshbuf_get_u32(msg, &id)) != 0)
|
|
fatal_fr(r, "parse");
|
|
|
|
debug3("Received reply T:%u I:%u", type, id);
|
|
|
|
if (id != expected_id)
|
|
fatal("ID mismatch (%u != %u)", id, expected_id);
|
|
|
|
if (type == SSH2_FXP_STATUS) {
|
|
u_int rstatus;
|
|
|
|
if ((r = sshbuf_get_u32(msg, &rstatus)) != 0)
|
|
fatal_fr(r, "parse status");
|
|
debug3("Received SSH2_FXP_STATUS %d", rstatus);
|
|
if (rstatus == SSH2_FX_EOF)
|
|
break;
|
|
error("Couldn't read directory: %s", fx2txt(rstatus));
|
|
goto out;
|
|
} else if (type != SSH2_FXP_NAME)
|
|
fatal("Expected SSH2_FXP_NAME(%u) packet, got %u",
|
|
SSH2_FXP_NAME, type);
|
|
|
|
if ((r = sshbuf_get_u32(msg, &count)) != 0)
|
|
fatal_fr(r, "parse count");
|
|
if (count > SSHBUF_SIZE_MAX)
|
|
fatal_f("nonsensical number of entries");
|
|
if (count == 0)
|
|
break;
|
|
debug3("Received %d SSH2_FXP_NAME responses", count);
|
|
for (i = 0; i < count; i++) {
|
|
char *filename, *longname;
|
|
Attrib a;
|
|
|
|
if ((r = sshbuf_get_cstring(msg, &filename,
|
|
NULL)) != 0 ||
|
|
(r = sshbuf_get_cstring(msg, &longname,
|
|
NULL)) != 0)
|
|
fatal_fr(r, "parse filenames");
|
|
if ((r = decode_attrib(msg, &a)) != 0) {
|
|
error_fr(r, "couldn't decode attrib");
|
|
free(filename);
|
|
free(longname);
|
|
goto out;
|
|
}
|
|
|
|
if (print_flag)
|
|
mprintf("%s\n", longname);
|
|
|
|
/*
|
|
* Directory entries should never contain '/'
|
|
* These can be used to attack recursive ops
|
|
* (e.g. send '../../../../etc/passwd')
|
|
*/
|
|
if (strpbrk(filename, SFTP_DIRECTORY_CHARS) != NULL) {
|
|
error("Server sent suspect path \"%s\" "
|
|
"during readdir of \"%s\"", filename, path);
|
|
} else if (dir) {
|
|
*dir = xreallocarray(*dir, ents + 2, sizeof(**dir));
|
|
(*dir)[ents] = xcalloc(1, sizeof(***dir));
|
|
(*dir)[ents]->filename = xstrdup(filename);
|
|
(*dir)[ents]->longname = xstrdup(longname);
|
|
memcpy(&(*dir)[ents]->a, &a, sizeof(a));
|
|
(*dir)[++ents] = NULL;
|
|
}
|
|
free(filename);
|
|
free(longname);
|
|
}
|
|
}
|
|
status = 0;
|
|
|
|
out:
|
|
sshbuf_free(msg);
|
|
do_close(conn, handle, handle_len);
|
|
free(handle);
|
|
|
|
if (status != 0 && dir != NULL) {
|
|
/* Don't return results on error */
|
|
free_sftp_dirents(*dir);
|
|
*dir = NULL;
|
|
} else if (interrupted && dir != NULL && *dir != NULL) {
|
|
/* Don't return partial matches on interrupt */
|
|
free_sftp_dirents(*dir);
|
|
*dir = xcalloc(1, sizeof(**dir));
|
|
**dir = NULL;
|
|
}
|
|
|
|
return status == SSH2_FX_OK ? 0 : -1;
|
|
}
|
|
|
|
int
|
|
do_readdir(struct sftp_conn *conn, const char *path, SFTP_DIRENT ***dir)
|
|
{
|
|
return(do_lsreaddir(conn, path, 0, dir));
|
|
}
|
|
|
|
void free_sftp_dirents(SFTP_DIRENT **s)
|
|
{
|
|
int i;
|
|
|
|
if (s == NULL)
|
|
return;
|
|
for (i = 0; s[i]; i++) {
|
|
free(s[i]->filename);
|
|
free(s[i]->longname);
|
|
free(s[i]);
|
|
}
|
|
free(s);
|
|
}
|
|
|
|
int
|
|
do_rm(struct sftp_conn *conn, const char *path)
|
|
{
|
|
u_int status, id;
|
|
|
|
debug2("Sending SSH2_FXP_REMOVE \"%s\"", path);
|
|
|
|
id = conn->msg_id++;
|
|
send_string_request(conn, id, SSH2_FXP_REMOVE, path, strlen(path));
|
|
status = get_status(conn, id);
|
|
if (status != SSH2_FX_OK)
|
|
error("Couldn't delete file: %s", fx2txt(status));
|
|
return status == SSH2_FX_OK ? 0 : -1;
|
|
}
|
|
|
|
int
|
|
do_mkdir(struct sftp_conn *conn, const char *path, Attrib *a, int print_flag)
|
|
{
|
|
u_int status, id;
|
|
|
|
id = conn->msg_id++;
|
|
send_string_attrs_request(conn, id, SSH2_FXP_MKDIR, path,
|
|
strlen(path), a);
|
|
|
|
status = get_status(conn, id);
|
|
if (status != SSH2_FX_OK && print_flag)
|
|
error("Couldn't create directory: %s", fx2txt(status));
|
|
|
|
return status == SSH2_FX_OK ? 0 : -1;
|
|
}
|
|
|
|
int
|
|
do_rmdir(struct sftp_conn *conn, const char *path)
|
|
{
|
|
u_int status, id;
|
|
|
|
id = conn->msg_id++;
|
|
send_string_request(conn, id, SSH2_FXP_RMDIR, path,
|
|
strlen(path));
|
|
|
|
status = get_status(conn, id);
|
|
if (status != SSH2_FX_OK)
|
|
error("Couldn't remove directory: %s", fx2txt(status));
|
|
|
|
return status == SSH2_FX_OK ? 0 : -1;
|
|
}
|
|
|
|
Attrib *
|
|
do_stat(struct sftp_conn *conn, const char *path, int quiet)
|
|
{
|
|
u_int id;
|
|
|
|
id = conn->msg_id++;
|
|
|
|
send_string_request(conn, id,
|
|
conn->version == 0 ? SSH2_FXP_STAT_VERSION_0 : SSH2_FXP_STAT,
|
|
path, strlen(path));
|
|
|
|
return(get_decode_stat(conn, id, quiet));
|
|
}
|
|
|
|
Attrib *
|
|
do_lstat(struct sftp_conn *conn, const char *path, int quiet)
|
|
{
|
|
u_int id;
|
|
|
|
if (conn->version == 0) {
|
|
if (quiet)
|
|
debug("Server version does not support lstat operation");
|
|
else
|
|
logit("Server version does not support lstat operation");
|
|
return(do_stat(conn, path, quiet));
|
|
}
|
|
|
|
id = conn->msg_id++;
|
|
send_string_request(conn, id, SSH2_FXP_LSTAT, path,
|
|
strlen(path));
|
|
|
|
return(get_decode_stat(conn, id, quiet));
|
|
}
|
|
|
|
#ifdef notyet
|
|
Attrib *
|
|
do_fstat(struct sftp_conn *conn, const u_char *handle, u_int handle_len,
|
|
int quiet)
|
|
{
|
|
u_int id;
|
|
|
|
id = conn->msg_id++;
|
|
send_string_request(conn, id, SSH2_FXP_FSTAT, handle,
|
|
handle_len);
|
|
|
|
return(get_decode_stat(conn, id, quiet));
|
|
}
|
|
#endif
|
|
|
|
int
|
|
do_setstat(struct sftp_conn *conn, const char *path, Attrib *a)
|
|
{
|
|
u_int status, id;
|
|
|
|
id = conn->msg_id++;
|
|
send_string_attrs_request(conn, id, SSH2_FXP_SETSTAT, path,
|
|
strlen(path), a);
|
|
|
|
status = get_status(conn, id);
|
|
if (status != SSH2_FX_OK)
|
|
error("Couldn't setstat on \"%s\": %s", path,
|
|
fx2txt(status));
|
|
|
|
return status == SSH2_FX_OK ? 0 : -1;
|
|
}
|
|
|
|
int
|
|
do_fsetstat(struct sftp_conn *conn, const u_char *handle, u_int handle_len,
|
|
Attrib *a)
|
|
{
|
|
u_int status, id;
|
|
|
|
id = conn->msg_id++;
|
|
send_string_attrs_request(conn, id, SSH2_FXP_FSETSTAT, handle,
|
|
handle_len, a);
|
|
|
|
status = get_status(conn, id);
|
|
if (status != SSH2_FX_OK)
|
|
error("Couldn't fsetstat: %s", fx2txt(status));
|
|
|
|
return status == SSH2_FX_OK ? 0 : -1;
|
|
}
|
|
|
|
/* Implements both the realpath and expand-path operations */
|
|
static char *
|
|
do_realpath_expand(struct sftp_conn *conn, const char *path, int expand)
|
|
{
|
|
struct sshbuf *msg;
|
|
u_int expected_id, count, id;
|
|
char *filename, *longname;
|
|
Attrib a;
|
|
u_char type;
|
|
int r;
|
|
const char *what = "SSH2_FXP_REALPATH";
|
|
|
|
if (expand)
|
|
what = "expand-path@openssh.com";
|
|
if ((msg = sshbuf_new()) == NULL)
|
|
fatal_f("sshbuf_new failed");
|
|
|
|
expected_id = id = conn->msg_id++;
|
|
if (expand) {
|
|
if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
|
|
(r = sshbuf_put_u32(msg, id)) != 0 ||
|
|
(r = sshbuf_put_cstring(msg,
|
|
"expand-path@openssh.com")) != 0 ||
|
|
(r = sshbuf_put_cstring(msg, path)) != 0)
|
|
fatal_fr(r, "compose %s", what);
|
|
send_msg(conn, msg);
|
|
} else {
|
|
send_string_request(conn, id, SSH2_FXP_REALPATH,
|
|
path, strlen(path));
|
|
}
|
|
get_msg(conn, msg);
|
|
if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
|
|
(r = sshbuf_get_u32(msg, &id)) != 0)
|
|
fatal_fr(r, "parse");
|
|
|
|
if (id != expected_id)
|
|
fatal("ID mismatch (%u != %u)", id, expected_id);
|
|
|
|
if (type == SSH2_FXP_STATUS) {
|
|
u_int status;
|
|
|
|
if ((r = sshbuf_get_u32(msg, &status)) != 0)
|
|
fatal_fr(r, "parse status");
|
|
error("Couldn't canonicalize: %s", fx2txt(status));
|
|
sshbuf_free(msg);
|
|
return NULL;
|
|
} else if (type != SSH2_FXP_NAME)
|
|
fatal("Expected SSH2_FXP_NAME(%u) packet, got %u",
|
|
SSH2_FXP_NAME, type);
|
|
|
|
if ((r = sshbuf_get_u32(msg, &count)) != 0)
|
|
fatal_fr(r, "parse count");
|
|
if (count != 1)
|
|
fatal("Got multiple names (%d) from %s", count, what);
|
|
|
|
if ((r = sshbuf_get_cstring(msg, &filename, NULL)) != 0 ||
|
|
(r = sshbuf_get_cstring(msg, &longname, NULL)) != 0 ||
|
|
(r = decode_attrib(msg, &a)) != 0)
|
|
fatal_fr(r, "parse filename/attrib");
|
|
|
|
debug3("%s %s -> %s", what, path, filename);
|
|
|
|
free(longname);
|
|
|
|
sshbuf_free(msg);
|
|
|
|
return(filename);
|
|
}
|
|
|
|
char *
|
|
do_realpath(struct sftp_conn *conn, const char *path)
|
|
{
|
|
return do_realpath_expand(conn, path, 0);
|
|
}
|
|
|
|
int
|
|
can_expand_path(struct sftp_conn *conn)
|
|
{
|
|
return (conn->exts & SFTP_EXT_PATH_EXPAND) != 0;
|
|
}
|
|
|
|
char *
|
|
do_expand_path(struct sftp_conn *conn, const char *path)
|
|
{
|
|
if (!can_expand_path(conn)) {
|
|
debug3_f("no server support, fallback to realpath");
|
|
return do_realpath_expand(conn, path, 0);
|
|
}
|
|
return do_realpath_expand(conn, path, 1);
|
|
}
|
|
|
|
int
|
|
do_rename(struct sftp_conn *conn, const char *oldpath, const char *newpath,
|
|
int force_legacy)
|
|
{
|
|
struct sshbuf *msg;
|
|
u_int status, id;
|
|
int r, use_ext = (conn->exts & SFTP_EXT_POSIX_RENAME) && !force_legacy;
|
|
|
|
if ((msg = sshbuf_new()) == NULL)
|
|
fatal_f("sshbuf_new failed");
|
|
|
|
/* Send rename request */
|
|
id = conn->msg_id++;
|
|
if (use_ext) {
|
|
if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
|
|
(r = sshbuf_put_u32(msg, id)) != 0 ||
|
|
(r = sshbuf_put_cstring(msg,
|
|
"posix-rename@openssh.com")) != 0)
|
|
fatal_fr(r, "compose posix-rename");
|
|
} else {
|
|
if ((r = sshbuf_put_u8(msg, SSH2_FXP_RENAME)) != 0 ||
|
|
(r = sshbuf_put_u32(msg, id)) != 0)
|
|
fatal_fr(r, "compose rename");
|
|
}
|
|
if ((r = sshbuf_put_cstring(msg, oldpath)) != 0 ||
|
|
(r = sshbuf_put_cstring(msg, newpath)) != 0)
|
|
fatal_fr(r, "compose paths");
|
|
send_msg(conn, msg);
|
|
debug3("Sent message %s \"%s\" -> \"%s\"",
|
|
use_ext ? "posix-rename@openssh.com" :
|
|
"SSH2_FXP_RENAME", oldpath, newpath);
|
|
sshbuf_free(msg);
|
|
|
|
status = get_status(conn, id);
|
|
if (status != SSH2_FX_OK)
|
|
error("Couldn't rename file \"%s\" to \"%s\": %s", oldpath,
|
|
newpath, fx2txt(status));
|
|
|
|
return status == SSH2_FX_OK ? 0 : -1;
|
|
}
|
|
|
|
int
|
|
do_hardlink(struct sftp_conn *conn, const char *oldpath, const char *newpath)
|
|
{
|
|
struct sshbuf *msg;
|
|
u_int status, id;
|
|
int r;
|
|
|
|
if ((conn->exts & SFTP_EXT_HARDLINK) == 0) {
|
|
error("Server does not support hardlink@openssh.com extension");
|
|
return -1;
|
|
}
|
|
|
|
if ((msg = sshbuf_new()) == NULL)
|
|
fatal_f("sshbuf_new failed");
|
|
|
|
/* Send link request */
|
|
id = conn->msg_id++;
|
|
if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
|
|
(r = sshbuf_put_u32(msg, id)) != 0 ||
|
|
(r = sshbuf_put_cstring(msg, "hardlink@openssh.com")) != 0 ||
|
|
(r = sshbuf_put_cstring(msg, oldpath)) != 0 ||
|
|
(r = sshbuf_put_cstring(msg, newpath)) != 0)
|
|
fatal_fr(r, "compose");
|
|
send_msg(conn, msg);
|
|
debug3("Sent message hardlink@openssh.com \"%s\" -> \"%s\"",
|
|
oldpath, newpath);
|
|
sshbuf_free(msg);
|
|
|
|
status = get_status(conn, id);
|
|
if (status != SSH2_FX_OK)
|
|
error("Couldn't link file \"%s\" to \"%s\": %s", oldpath,
|
|
newpath, fx2txt(status));
|
|
|
|
return status == SSH2_FX_OK ? 0 : -1;
|
|
}
|
|
|
|
int
|
|
do_symlink(struct sftp_conn *conn, const char *oldpath, const char *newpath)
|
|
{
|
|
struct sshbuf *msg;
|
|
u_int status, id;
|
|
int r;
|
|
|
|
if (conn->version < 3) {
|
|
error("This server does not support the symlink operation");
|
|
return(SSH2_FX_OP_UNSUPPORTED);
|
|
}
|
|
|
|
if ((msg = sshbuf_new()) == NULL)
|
|
fatal_f("sshbuf_new failed");
|
|
|
|
/* Send symlink request */
|
|
id = conn->msg_id++;
|
|
if ((r = sshbuf_put_u8(msg, SSH2_FXP_SYMLINK)) != 0 ||
|
|
(r = sshbuf_put_u32(msg, id)) != 0 ||
|
|
(r = sshbuf_put_cstring(msg, oldpath)) != 0 ||
|
|
(r = sshbuf_put_cstring(msg, newpath)) != 0)
|
|
fatal_fr(r, "compose");
|
|
send_msg(conn, msg);
|
|
debug3("Sent message SSH2_FXP_SYMLINK \"%s\" -> \"%s\"", oldpath,
|
|
newpath);
|
|
sshbuf_free(msg);
|
|
|
|
status = get_status(conn, id);
|
|
if (status != SSH2_FX_OK)
|
|
error("Couldn't symlink file \"%s\" to \"%s\": %s", oldpath,
|
|
newpath, fx2txt(status));
|
|
|
|
return status == SSH2_FX_OK ? 0 : -1;
|
|
}
|
|
|
|
int
|
|
do_fsync(struct sftp_conn *conn, u_char *handle, u_int handle_len)
|
|
{
|
|
struct sshbuf *msg;
|
|
u_int status, id;
|
|
int r;
|
|
|
|
/* Silently return if the extension is not supported */
|
|
if ((conn->exts & SFTP_EXT_FSYNC) == 0)
|
|
return -1;
|
|
|
|
/* Send fsync request */
|
|
if ((msg = sshbuf_new()) == NULL)
|
|
fatal_f("sshbuf_new failed");
|
|
id = conn->msg_id++;
|
|
if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
|
|
(r = sshbuf_put_u32(msg, id)) != 0 ||
|
|
(r = sshbuf_put_cstring(msg, "fsync@openssh.com")) != 0 ||
|
|
(r = sshbuf_put_string(msg, handle, handle_len)) != 0)
|
|
fatal_fr(r, "compose");
|
|
send_msg(conn, msg);
|
|
debug3("Sent message fsync@openssh.com I:%u", id);
|
|
sshbuf_free(msg);
|
|
|
|
status = get_status(conn, id);
|
|
if (status != SSH2_FX_OK)
|
|
error("Couldn't sync file: %s", fx2txt(status));
|
|
|
|
return status == SSH2_FX_OK ? 0 : -1;
|
|
}
|
|
|
|
#ifdef notyet
|
|
char *
|
|
do_readlink(struct sftp_conn *conn, const char *path)
|
|
{
|
|
struct sshbuf *msg;
|
|
u_int expected_id, count, id;
|
|
char *filename, *longname;
|
|
Attrib a;
|
|
u_char type;
|
|
int r;
|
|
|
|
expected_id = id = conn->msg_id++;
|
|
send_string_request(conn, id, SSH2_FXP_READLINK, path, strlen(path));
|
|
|
|
if ((msg = sshbuf_new()) == NULL)
|
|
fatal_f("sshbuf_new failed");
|
|
|
|
get_msg(conn, msg);
|
|
if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
|
|
(r = sshbuf_get_u32(msg, &id)) != 0)
|
|
fatal_fr(r, "parse");
|
|
|
|
if (id != expected_id)
|
|
fatal("ID mismatch (%u != %u)", id, expected_id);
|
|
|
|
if (type == SSH2_FXP_STATUS) {
|
|
u_int status;
|
|
|
|
if ((r = sshbuf_get_u32(msg, &status)) != 0)
|
|
fatal_fr(r, "parse status");
|
|
error("Couldn't readlink: %s", fx2txt(status));
|
|
sshbuf_free(msg);
|
|
return(NULL);
|
|
} else if (type != SSH2_FXP_NAME)
|
|
fatal("Expected SSH2_FXP_NAME(%u) packet, got %u",
|
|
SSH2_FXP_NAME, type);
|
|
|
|
if ((r = sshbuf_get_u32(msg, &count)) != 0)
|
|
fatal_fr(r, "parse count");
|
|
if (count != 1)
|
|
fatal("Got multiple names (%d) from SSH_FXP_READLINK", count);
|
|
|
|
if ((r = sshbuf_get_cstring(msg, &filename, NULL)) != 0 ||
|
|
(r = sshbuf_get_cstring(msg, &longname, NULL)) != 0 ||
|
|
(r = decode_attrib(msg, &a)) != 0)
|
|
fatal_fr(r, "parse filenames/attrib");
|
|
|
|
debug3("SSH_FXP_READLINK %s -> %s", path, filename);
|
|
|
|
free(longname);
|
|
|
|
sshbuf_free(msg);
|
|
|
|
return filename;
|
|
}
|
|
#endif
|
|
|
|
int
|
|
do_statvfs(struct sftp_conn *conn, const char *path, struct sftp_statvfs *st,
|
|
int quiet)
|
|
{
|
|
struct sshbuf *msg;
|
|
u_int id;
|
|
int r;
|
|
|
|
if ((conn->exts & SFTP_EXT_STATVFS) == 0) {
|
|
error("Server does not support statvfs@openssh.com extension");
|
|
return -1;
|
|
}
|
|
|
|
id = conn->msg_id++;
|
|
|
|
if ((msg = sshbuf_new()) == NULL)
|
|
fatal_f("sshbuf_new failed");
|
|
if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
|
|
(r = sshbuf_put_u32(msg, id)) != 0 ||
|
|
(r = sshbuf_put_cstring(msg, "statvfs@openssh.com")) != 0 ||
|
|
(r = sshbuf_put_cstring(msg, path)) != 0)
|
|
fatal_fr(r, "compose");
|
|
send_msg(conn, msg);
|
|
sshbuf_free(msg);
|
|
|
|
return get_decode_statvfs(conn, st, id, quiet);
|
|
}
|
|
|
|
#ifdef notyet
|
|
int
|
|
do_fstatvfs(struct sftp_conn *conn, const u_char *handle, u_int handle_len,
|
|
struct sftp_statvfs *st, int quiet)
|
|
{
|
|
struct sshbuf *msg;
|
|
u_int id;
|
|
|
|
if ((conn->exts & SFTP_EXT_FSTATVFS) == 0) {
|
|
error("Server does not support fstatvfs@openssh.com extension");
|
|
return -1;
|
|
}
|
|
|
|
id = conn->msg_id++;
|
|
|
|
if ((msg = sshbuf_new()) == NULL)
|
|
fatal_f("sshbuf_new failed");
|
|
if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
|
|
(r = sshbuf_put_u32(msg, id)) != 0 ||
|
|
(r = sshbuf_put_cstring(msg, "fstatvfs@openssh.com")) != 0 ||
|
|
(r = sshbuf_put_string(msg, handle, handle_len)) != 0)
|
|
fatal_fr(r, "compose");
|
|
send_msg(conn, msg);
|
|
sshbuf_free(msg);
|
|
|
|
return get_decode_statvfs(conn, st, id, quiet);
|
|
}
|
|
#endif
|
|
|
|
int
|
|
do_lsetstat(struct sftp_conn *conn, const char *path, Attrib *a)
|
|
{
|
|
struct sshbuf *msg;
|
|
u_int status, id;
|
|
int r;
|
|
|
|
if ((conn->exts & SFTP_EXT_LSETSTAT) == 0) {
|
|
error("Server does not support lsetstat@openssh.com extension");
|
|
return -1;
|
|
}
|
|
|
|
id = conn->msg_id++;
|
|
if ((msg = sshbuf_new()) == NULL)
|
|
fatal_f("sshbuf_new failed");
|
|
if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
|
|
(r = sshbuf_put_u32(msg, id)) != 0 ||
|
|
(r = sshbuf_put_cstring(msg, "lsetstat@openssh.com")) != 0 ||
|
|
(r = sshbuf_put_cstring(msg, path)) != 0 ||
|
|
(r = encode_attrib(msg, a)) != 0)
|
|
fatal_fr(r, "compose");
|
|
send_msg(conn, msg);
|
|
sshbuf_free(msg);
|
|
|
|
status = get_status(conn, id);
|
|
if (status != SSH2_FX_OK)
|
|
error("Couldn't setstat on \"%s\": %s", path,
|
|
fx2txt(status));
|
|
|
|
return status == SSH2_FX_OK ? 0 : -1;
|
|
}
|
|
|
|
static void
|
|
send_read_request(struct sftp_conn *conn, u_int id, u_int64_t offset,
|
|
u_int len, const u_char *handle, u_int handle_len)
|
|
{
|
|
struct sshbuf *msg;
|
|
int r;
|
|
|
|
if ((msg = sshbuf_new()) == NULL)
|
|
fatal_f("sshbuf_new failed");
|
|
if ((r = sshbuf_put_u8(msg, SSH2_FXP_READ)) != 0 ||
|
|
(r = sshbuf_put_u32(msg, id)) != 0 ||
|
|
(r = sshbuf_put_string(msg, handle, handle_len)) != 0 ||
|
|
(r = sshbuf_put_u64(msg, offset)) != 0 ||
|
|
(r = sshbuf_put_u32(msg, len)) != 0)
|
|
fatal_fr(r, "compose");
|
|
send_msg(conn, msg);
|
|
sshbuf_free(msg);
|
|
}
|
|
|
|
static int
|
|
send_open(struct sftp_conn *conn, const char *path, const char *tag,
|
|
u_int openmode, Attrib *a, u_char **handlep, size_t *handle_lenp)
|
|
{
|
|
Attrib junk;
|
|
u_char *handle;
|
|
size_t handle_len;
|
|
struct sshbuf *msg;
|
|
int r;
|
|
u_int id;
|
|
|
|
*handlep = NULL;
|
|
*handle_lenp = 0;
|
|
|
|
if (a == NULL) {
|
|
attrib_clear(&junk); /* Send empty attributes */
|
|
a = &junk;
|
|
}
|
|
/* Send open request */
|
|
if ((msg = sshbuf_new()) == NULL)
|
|
fatal_f("sshbuf_new failed");
|
|
id = conn->msg_id++;
|
|
if ((r = sshbuf_put_u8(msg, SSH2_FXP_OPEN)) != 0 ||
|
|
(r = sshbuf_put_u32(msg, id)) != 0 ||
|
|
(r = sshbuf_put_cstring(msg, path)) != 0 ||
|
|
(r = sshbuf_put_u32(msg, openmode)) != 0 ||
|
|
(r = encode_attrib(msg, a)) != 0)
|
|
fatal_fr(r, "compose %s open", tag);
|
|
send_msg(conn, msg);
|
|
sshbuf_free(msg);
|
|
debug3("Sent %s message SSH2_FXP_OPEN I:%u P:%s M:0x%04x",
|
|
tag, id, path, openmode);
|
|
if ((handle = get_handle(conn, id, &handle_len,
|
|
"%s open(\"%s\")", tag, path)) == NULL)
|
|
return -1;
|
|
/* success */
|
|
*handlep = handle;
|
|
*handle_lenp = handle_len;
|
|
return 0;
|
|
}
|
|
|
|
static const char *
|
|
progress_meter_path(const char *path)
|
|
{
|
|
const char *progresspath;
|
|
|
|
if ((progresspath = strrchr(path, '/')) == NULL)
|
|
return path;
|
|
progresspath++;
|
|
if (*progresspath == '\0')
|
|
return path;
|
|
return progresspath;
|
|
}
|
|
|
|
int
|
|
do_download(struct sftp_conn *conn, const char *remote_path,
|
|
const char *local_path, Attrib *a, int preserve_flag, int resume_flag,
|
|
int fsync_flag)
|
|
{
|
|
struct sshbuf *msg;
|
|
u_char *handle;
|
|
int local_fd = -1, write_error;
|
|
int read_error, write_errno, lmodified = 0, reordered = 0, r;
|
|
u_int64_t offset = 0, size, highwater;
|
|
u_int mode, id, buflen, num_req, max_req, status = SSH2_FX_OK;
|
|
off_t progress_counter;
|
|
size_t handle_len;
|
|
struct stat st;
|
|
struct requests requests;
|
|
struct request *req;
|
|
u_char type;
|
|
|
|
TAILQ_INIT(&requests);
|
|
|
|
if (a == NULL && (a = do_stat(conn, remote_path, 0)) == NULL)
|
|
return -1;
|
|
|
|
/* Do not preserve set[ug]id here, as we do not preserve ownership */
|
|
if (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS)
|
|
mode = a->perm & 0777;
|
|
else
|
|
mode = 0666;
|
|
|
|
if ((a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) &&
|
|
(!S_ISREG(a->perm))) {
|
|
error("Cannot download non-regular file: %s", remote_path);
|
|
return(-1);
|
|
}
|
|
|
|
if (a->flags & SSH2_FILEXFER_ATTR_SIZE)
|
|
size = a->size;
|
|
else
|
|
size = 0;
|
|
|
|
buflen = conn->download_buflen;
|
|
|
|
/* Send open request */
|
|
if (send_open(conn, remote_path, "remote", SSH2_FXF_READ, NULL,
|
|
&handle, &handle_len) != 0)
|
|
return -1;
|
|
|
|
local_fd = open(local_path,
|
|
O_WRONLY | O_CREAT | (resume_flag ? 0 : O_TRUNC), mode | S_IWUSR);
|
|
if (local_fd == -1) {
|
|
error("Couldn't open local file \"%s\" for writing: %s",
|
|
local_path, strerror(errno));
|
|
goto fail;
|
|
}
|
|
offset = highwater = 0;
|
|
if (resume_flag) {
|
|
if (fstat(local_fd, &st) == -1) {
|
|
error("Unable to stat local file \"%s\": %s",
|
|
local_path, strerror(errno));
|
|
goto fail;
|
|
}
|
|
if (st.st_size < 0) {
|
|
error("\"%s\" has negative size", local_path);
|
|
goto fail;
|
|
}
|
|
if ((u_int64_t)st.st_size > size) {
|
|
error("Unable to resume download of \"%s\": "
|
|
"local file is larger than remote", local_path);
|
|
fail:
|
|
do_close(conn, handle, handle_len);
|
|
free(handle);
|
|
if (local_fd != -1)
|
|
close(local_fd);
|
|
return -1;
|
|
}
|
|
offset = highwater = st.st_size;
|
|
}
|
|
|
|
/* Read from remote and write to local */
|
|
write_error = read_error = write_errno = num_req = 0;
|
|
max_req = 1;
|
|
progress_counter = offset;
|
|
|
|
if (showprogress && size != 0) {
|
|
start_progress_meter(progress_meter_path(remote_path),
|
|
size, &progress_counter);
|
|
}
|
|
|
|
if ((msg = sshbuf_new()) == NULL)
|
|
fatal_f("sshbuf_new failed");
|
|
|
|
while (num_req > 0 || max_req > 0) {
|
|
u_char *data;
|
|
size_t len;
|
|
|
|
/*
|
|
* Simulate EOF on interrupt: stop sending new requests and
|
|
* allow outstanding requests to drain gracefully
|
|
*/
|
|
if (interrupted) {
|
|
if (num_req == 0) /* If we haven't started yet... */
|
|
break;
|
|
max_req = 0;
|
|
}
|
|
|
|
/* Send some more requests */
|
|
while (num_req < max_req) {
|
|
debug3("Request range %llu -> %llu (%d/%d)",
|
|
(unsigned long long)offset,
|
|
(unsigned long long)offset + buflen - 1,
|
|
num_req, max_req);
|
|
req = request_enqueue(&requests, conn->msg_id++,
|
|
buflen, offset);
|
|
offset += buflen;
|
|
num_req++;
|
|
send_read_request(conn, req->id, req->offset,
|
|
req->len, handle, handle_len);
|
|
}
|
|
|
|
sshbuf_reset(msg);
|
|
get_msg(conn, msg);
|
|
if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
|
|
(r = sshbuf_get_u32(msg, &id)) != 0)
|
|
fatal_fr(r, "parse");
|
|
debug3("Received reply T:%u I:%u R:%d", type, id, max_req);
|
|
|
|
/* Find the request in our queue */
|
|
if ((req = request_find(&requests, id)) == NULL)
|
|
fatal("Unexpected reply %u", id);
|
|
|
|
switch (type) {
|
|
case SSH2_FXP_STATUS:
|
|
if ((r = sshbuf_get_u32(msg, &status)) != 0)
|
|
fatal_fr(r, "parse status");
|
|
if (status != SSH2_FX_EOF)
|
|
read_error = 1;
|
|
max_req = 0;
|
|
TAILQ_REMOVE(&requests, req, tq);
|
|
free(req);
|
|
num_req--;
|
|
break;
|
|
case SSH2_FXP_DATA:
|
|
if ((r = sshbuf_get_string(msg, &data, &len)) != 0)
|
|
fatal_fr(r, "parse data");
|
|
debug3("Received data %llu -> %llu",
|
|
(unsigned long long)req->offset,
|
|
(unsigned long long)req->offset + len - 1);
|
|
if (len > req->len)
|
|
fatal("Received more data than asked for "
|
|
"%zu > %zu", len, req->len);
|
|
lmodified = 1;
|
|
if ((lseek(local_fd, req->offset, SEEK_SET) == -1 ||
|
|
atomicio(vwrite, local_fd, data, len) != len) &&
|
|
!write_error) {
|
|
write_errno = errno;
|
|
write_error = 1;
|
|
max_req = 0;
|
|
}
|
|
else if (!reordered && req->offset <= highwater)
|
|
highwater = req->offset + len;
|
|
else if (!reordered && req->offset > highwater)
|
|
reordered = 1;
|
|
progress_counter += len;
|
|
free(data);
|
|
|
|
if (len == req->len) {
|
|
TAILQ_REMOVE(&requests, req, tq);
|
|
free(req);
|
|
num_req--;
|
|
} else {
|
|
/* Resend the request for the missing data */
|
|
debug3("Short data block, re-requesting "
|
|
"%llu -> %llu (%2d)",
|
|
(unsigned long long)req->offset + len,
|
|
(unsigned long long)req->offset +
|
|
req->len - 1, num_req);
|
|
req->id = conn->msg_id++;
|
|
req->len -= len;
|
|
req->offset += len;
|
|
send_read_request(conn, req->id,
|
|
req->offset, req->len, handle, handle_len);
|
|
/* Reduce the request size */
|
|
if (len < buflen)
|
|
buflen = MAXIMUM(MIN_READ_SIZE, len);
|
|
}
|
|
if (max_req > 0) { /* max_req = 0 iff EOF received */
|
|
if (size > 0 && offset > size) {
|
|
/* Only one request at a time
|
|
* after the expected EOF */
|
|
debug3("Finish at %llu (%2d)",
|
|
(unsigned long long)offset,
|
|
num_req);
|
|
max_req = 1;
|
|
} else if (max_req < conn->num_requests) {
|
|
++max_req;
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
fatal("Expected SSH2_FXP_DATA(%u) packet, got %u",
|
|
SSH2_FXP_DATA, type);
|
|
}
|
|
}
|
|
|
|
if (showprogress && size)
|
|
stop_progress_meter();
|
|
|
|
/* Sanity check */
|
|
if (TAILQ_FIRST(&requests) != NULL)
|
|
fatal("Transfer complete, but requests still in queue");
|
|
/* Truncate at highest contiguous point to avoid holes on interrupt */
|
|
if (read_error || write_error || interrupted) {
|
|
if (reordered && resume_flag) {
|
|
error("Unable to resume download of \"%s\": "
|
|
"server reordered requests", local_path);
|
|
}
|
|
debug("truncating at %llu", (unsigned long long)highwater);
|
|
if (ftruncate(local_fd, highwater) == -1)
|
|
error("ftruncate \"%s\": %s", local_path,
|
|
strerror(errno));
|
|
}
|
|
if (read_error) {
|
|
error("Couldn't read from remote file \"%s\" : %s",
|
|
remote_path, fx2txt(status));
|
|
status = -1;
|
|
do_close(conn, handle, handle_len);
|
|
} else if (write_error) {
|
|
error("Couldn't write to \"%s\": %s", local_path,
|
|
strerror(write_errno));
|
|
status = SSH2_FX_FAILURE;
|
|
do_close(conn, handle, handle_len);
|
|
} else {
|
|
if (do_close(conn, handle, handle_len) != 0 || interrupted)
|
|
status = SSH2_FX_FAILURE;
|
|
else
|
|
status = SSH2_FX_OK;
|
|
/* Override umask and utimes if asked */
|
|
#ifdef HAVE_FCHMOD
|
|
if (preserve_flag && fchmod(local_fd, mode) == -1)
|
|
#else
|
|
if (preserve_flag && chmod(local_path, mode) == -1)
|
|
#endif /* HAVE_FCHMOD */
|
|
error("Couldn't set mode on \"%s\": %s", local_path,
|
|
strerror(errno));
|
|
if (preserve_flag &&
|
|
(a->flags & SSH2_FILEXFER_ATTR_ACMODTIME)) {
|
|
struct timeval tv[2];
|
|
tv[0].tv_sec = a->atime;
|
|
tv[1].tv_sec = a->mtime;
|
|
tv[0].tv_usec = tv[1].tv_usec = 0;
|
|
if (utimes(local_path, tv) == -1)
|
|
error("Can't set times on \"%s\": %s",
|
|
local_path, strerror(errno));
|
|
}
|
|
if (resume_flag && !lmodified)
|
|
logit("File \"%s\" was not modified", local_path);
|
|
else if (fsync_flag) {
|
|
debug("syncing \"%s\"", local_path);
|
|
if (fsync(local_fd) == -1)
|
|
error("Couldn't sync file \"%s\": %s",
|
|
local_path, strerror(errno));
|
|
}
|
|
}
|
|
close(local_fd);
|
|
sshbuf_free(msg);
|
|
free(handle);
|
|
|
|
return status == SSH2_FX_OK ? 0 : -1;
|
|
}
|
|
|
|
static int
|
|
download_dir_internal(struct sftp_conn *conn, const char *src, const char *dst,
|
|
int depth, Attrib *dirattrib, int preserve_flag, int print_flag,
|
|
int resume_flag, int fsync_flag, int follow_link_flag)
|
|
{
|
|
int i, ret = 0;
|
|
SFTP_DIRENT **dir_entries;
|
|
char *filename, *new_src = NULL, *new_dst = NULL;
|
|
mode_t mode = 0777, tmpmode = mode;
|
|
|
|
if (depth >= MAX_DIR_DEPTH) {
|
|
error("Maximum directory depth exceeded: %d levels", depth);
|
|
return -1;
|
|
}
|
|
|
|
if (dirattrib == NULL &&
|
|
(dirattrib = do_stat(conn, src, 1)) == NULL) {
|
|
error("Unable to stat remote directory \"%s\"", src);
|
|
return -1;
|
|
}
|
|
if (!S_ISDIR(dirattrib->perm)) {
|
|
error("\"%s\" is not a directory", src);
|
|
return -1;
|
|
}
|
|
if (print_flag && print_flag != SFTP_PROGRESS_ONLY)
|
|
mprintf("Retrieving %s\n", src);
|
|
|
|
if (dirattrib->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) {
|
|
mode = dirattrib->perm & 01777;
|
|
tmpmode = mode | (S_IWUSR|S_IXUSR);
|
|
} else {
|
|
debug("Server did not send permissions for "
|
|
"directory \"%s\"", dst);
|
|
}
|
|
|
|
if (mkdir(dst, tmpmode) == -1 && errno != EEXIST) {
|
|
error("mkdir %s: %s", dst, strerror(errno));
|
|
return -1;
|
|
}
|
|
|
|
if (do_readdir(conn, src, &dir_entries) == -1) {
|
|
error("%s: Failed to get directory contents", src);
|
|
return -1;
|
|
}
|
|
|
|
for (i = 0; dir_entries[i] != NULL && !interrupted; i++) {
|
|
free(new_dst);
|
|
free(new_src);
|
|
|
|
filename = dir_entries[i]->filename;
|
|
new_dst = path_append(dst, filename);
|
|
new_src = path_append(src, filename);
|
|
|
|
if (S_ISDIR(dir_entries[i]->a.perm)) {
|
|
if (strcmp(filename, ".") == 0 ||
|
|
strcmp(filename, "..") == 0)
|
|
continue;
|
|
if (download_dir_internal(conn, new_src, new_dst,
|
|
depth + 1, &(dir_entries[i]->a), preserve_flag,
|
|
print_flag, resume_flag,
|
|
fsync_flag, follow_link_flag) == -1)
|
|
ret = -1;
|
|
} else if (S_ISREG(dir_entries[i]->a.perm) ||
|
|
(follow_link_flag && S_ISLNK(dir_entries[i]->a.perm))) {
|
|
/*
|
|
* If this is a symlink then don't send the link's
|
|
* Attrib. do_download() will do a FXP_STAT operation
|
|
* and get the link target's attributes.
|
|
*/
|
|
if (do_download(conn, new_src, new_dst,
|
|
S_ISLNK(dir_entries[i]->a.perm) ? NULL :
|
|
&(dir_entries[i]->a),
|
|
preserve_flag, resume_flag, fsync_flag) == -1) {
|
|
error("Download of file %s to %s failed",
|
|
new_src, new_dst);
|
|
ret = -1;
|
|
}
|
|
} else
|
|
logit("%s: not a regular file\n", new_src);
|
|
|
|
}
|
|
free(new_dst);
|
|
free(new_src);
|
|
|
|
if (preserve_flag) {
|
|
if (dirattrib->flags & SSH2_FILEXFER_ATTR_ACMODTIME) {
|
|
struct timeval tv[2];
|
|
tv[0].tv_sec = dirattrib->atime;
|
|
tv[1].tv_sec = dirattrib->mtime;
|
|
tv[0].tv_usec = tv[1].tv_usec = 0;
|
|
if (utimes(dst, tv) == -1)
|
|
error("Can't set times on \"%s\": %s",
|
|
dst, strerror(errno));
|
|
} else
|
|
debug("Server did not send times for directory "
|
|
"\"%s\"", dst);
|
|
}
|
|
|
|
if (mode != tmpmode && chmod(dst, mode) == -1)
|
|
error("Can't set final mode on \"%s\": %s", dst,
|
|
strerror(errno));
|
|
|
|
free_sftp_dirents(dir_entries);
|
|
|
|
return ret;
|
|
}
|
|
|
|
int
|
|
download_dir(struct sftp_conn *conn, const char *src, const char *dst,
|
|
Attrib *dirattrib, int preserve_flag, int print_flag, int resume_flag,
|
|
int fsync_flag, int follow_link_flag)
|
|
{
|
|
char *src_canon;
|
|
int ret;
|
|
|
|
if ((src_canon = do_realpath(conn, src)) == NULL) {
|
|
error("Unable to canonicalize path \"%s\"", src);
|
|
return -1;
|
|
}
|
|
|
|
ret = download_dir_internal(conn, src_canon, dst, 0,
|
|
dirattrib, preserve_flag, print_flag, resume_flag, fsync_flag,
|
|
follow_link_flag);
|
|
free(src_canon);
|
|
return ret;
|
|
}
|
|
|
|
int
|
|
do_upload(struct sftp_conn *conn, const char *local_path,
|
|
const char *remote_path, int preserve_flag, int resume, int fsync_flag)
|
|
{
|
|
int r, local_fd;
|
|
u_int status = SSH2_FX_OK;
|
|
u_int id;
|
|
u_char type;
|
|
off_t offset, progress_counter;
|
|
u_char *handle, *data;
|
|
struct sshbuf *msg;
|
|
struct stat sb;
|
|
Attrib a, *c = NULL;
|
|
u_int32_t startid;
|
|
u_int32_t ackid;
|
|
struct request *ack = NULL;
|
|
struct requests acks;
|
|
size_t handle_len;
|
|
|
|
TAILQ_INIT(&acks);
|
|
|
|
if ((local_fd = open(local_path, O_RDONLY, 0)) == -1) {
|
|
error("Couldn't open local file \"%s\" for reading: %s",
|
|
local_path, strerror(errno));
|
|
return(-1);
|
|
}
|
|
if (fstat(local_fd, &sb) == -1) {
|
|
error("Couldn't fstat local file \"%s\": %s",
|
|
local_path, strerror(errno));
|
|
close(local_fd);
|
|
return(-1);
|
|
}
|
|
if (!S_ISREG(sb.st_mode)) {
|
|
error("%s is not a regular file", local_path);
|
|
close(local_fd);
|
|
return(-1);
|
|
}
|
|
stat_to_attrib(&sb, &a);
|
|
|
|
a.flags &= ~SSH2_FILEXFER_ATTR_SIZE;
|
|
a.flags &= ~SSH2_FILEXFER_ATTR_UIDGID;
|
|
a.perm &= 0777;
|
|
if (!preserve_flag)
|
|
a.flags &= ~SSH2_FILEXFER_ATTR_ACMODTIME;
|
|
|
|
if (resume) {
|
|
/* Get remote file size if it exists */
|
|
if ((c = do_stat(conn, remote_path, 0)) == NULL) {
|
|
close(local_fd);
|
|
return -1;
|
|
}
|
|
|
|
if ((off_t)c->size >= sb.st_size) {
|
|
error("destination file bigger or same size as "
|
|
"source file");
|
|
close(local_fd);
|
|
return -1;
|
|
}
|
|
|
|
if (lseek(local_fd, (off_t)c->size, SEEK_SET) == -1) {
|
|
close(local_fd);
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
/* Send open request */
|
|
if (send_open(conn, remote_path, "dest", SSH2_FXF_WRITE|SSH2_FXF_CREAT|
|
|
(resume ? SSH2_FXF_APPEND : SSH2_FXF_TRUNC),
|
|
&a, &handle, &handle_len) != 0) {
|
|
close(local_fd);
|
|
return -1;
|
|
}
|
|
|
|
id = conn->msg_id;
|
|
startid = ackid = id + 1;
|
|
data = xmalloc(conn->upload_buflen);
|
|
|
|
/* Read from local and write to remote */
|
|
offset = progress_counter = (resume ? c->size : 0);
|
|
if (showprogress) {
|
|
start_progress_meter(progress_meter_path(local_path),
|
|
sb.st_size, &progress_counter);
|
|
}
|
|
|
|
if ((msg = sshbuf_new()) == NULL)
|
|
fatal_f("sshbuf_new failed");
|
|
for (;;) {
|
|
int len;
|
|
|
|
/*
|
|
* Can't use atomicio here because it returns 0 on EOF,
|
|
* thus losing the last block of the file.
|
|
* Simulate an EOF on interrupt, allowing ACKs from the
|
|
* server to drain.
|
|
*/
|
|
if (interrupted || status != SSH2_FX_OK)
|
|
len = 0;
|
|
else do
|
|
len = read(local_fd, data, conn->upload_buflen);
|
|
while ((len == -1) &&
|
|
(errno == EINTR || errno == EAGAIN || errno == EWOULDBLOCK));
|
|
|
|
if (len == -1)
|
|
fatal("Couldn't read from \"%s\": %s", local_path,
|
|
strerror(errno));
|
|
|
|
if (len != 0) {
|
|
ack = request_enqueue(&acks, ++id, len, offset);
|
|
sshbuf_reset(msg);
|
|
if ((r = sshbuf_put_u8(msg, SSH2_FXP_WRITE)) != 0 ||
|
|
(r = sshbuf_put_u32(msg, ack->id)) != 0 ||
|
|
(r = sshbuf_put_string(msg, handle,
|
|
handle_len)) != 0 ||
|
|
(r = sshbuf_put_u64(msg, offset)) != 0 ||
|
|
(r = sshbuf_put_string(msg, data, len)) != 0)
|
|
fatal_fr(r, "compose");
|
|
send_msg(conn, msg);
|
|
debug3("Sent message SSH2_FXP_WRITE I:%u O:%llu S:%u",
|
|
id, (unsigned long long)offset, len);
|
|
} else if (TAILQ_FIRST(&acks) == NULL)
|
|
break;
|
|
|
|
if (ack == NULL)
|
|
fatal("Unexpected ACK %u", id);
|
|
|
|
if (id == startid || len == 0 ||
|
|
id - ackid >= conn->num_requests) {
|
|
u_int rid;
|
|
|
|
sshbuf_reset(msg);
|
|
get_msg(conn, msg);
|
|
if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
|
|
(r = sshbuf_get_u32(msg, &rid)) != 0)
|
|
fatal_fr(r, "parse");
|
|
|
|
if (type != SSH2_FXP_STATUS)
|
|
fatal("Expected SSH2_FXP_STATUS(%d) packet, "
|
|
"got %d", SSH2_FXP_STATUS, type);
|
|
|
|
if ((r = sshbuf_get_u32(msg, &status)) != 0)
|
|
fatal_fr(r, "parse status");
|
|
debug3("SSH2_FXP_STATUS %u", status);
|
|
|
|
/* Find the request in our queue */
|
|
if ((ack = request_find(&acks, rid)) == NULL)
|
|
fatal("Can't find request for ID %u", rid);
|
|
TAILQ_REMOVE(&acks, ack, tq);
|
|
debug3("In write loop, ack for %u %zu bytes at %lld",
|
|
ack->id, ack->len, (unsigned long long)ack->offset);
|
|
++ackid;
|
|
progress_counter += ack->len;
|
|
free(ack);
|
|
}
|
|
offset += len;
|
|
if (offset < 0)
|
|
fatal_f("offset < 0");
|
|
}
|
|
sshbuf_free(msg);
|
|
|
|
if (showprogress)
|
|
stop_progress_meter();
|
|
free(data);
|
|
|
|
if (status != SSH2_FX_OK) {
|
|
error("Couldn't write to remote file \"%s\": %s",
|
|
remote_path, fx2txt(status));
|
|
status = SSH2_FX_FAILURE;
|
|
}
|
|
|
|
if (close(local_fd) == -1) {
|
|
error("Couldn't close local file \"%s\": %s", local_path,
|
|
strerror(errno));
|
|
status = SSH2_FX_FAILURE;
|
|
}
|
|
|
|
/* Override umask and utimes if asked */
|
|
if (preserve_flag)
|
|
do_fsetstat(conn, handle, handle_len, &a);
|
|
|
|
if (fsync_flag)
|
|
(void)do_fsync(conn, handle, handle_len);
|
|
|
|
if (do_close(conn, handle, handle_len) != 0)
|
|
status = SSH2_FX_FAILURE;
|
|
|
|
free(handle);
|
|
|
|
return status == SSH2_FX_OK ? 0 : -1;
|
|
}
|
|
|
|
static int
|
|
upload_dir_internal(struct sftp_conn *conn, const char *src, const char *dst,
|
|
int depth, int preserve_flag, int print_flag, int resume, int fsync_flag,
|
|
int follow_link_flag)
|
|
{
|
|
int ret = 0;
|
|
DIR *dirp;
|
|
struct dirent *dp;
|
|
char *filename, *new_src = NULL, *new_dst = NULL;
|
|
struct stat sb;
|
|
Attrib a, *dirattrib;
|
|
u_int32_t saved_perm;
|
|
|
|
if (depth >= MAX_DIR_DEPTH) {
|
|
error("Maximum directory depth exceeded: %d levels", depth);
|
|
return -1;
|
|
}
|
|
|
|
if (stat(src, &sb) == -1) {
|
|
error("Couldn't stat directory \"%s\": %s",
|
|
src, strerror(errno));
|
|
return -1;
|
|
}
|
|
if (!S_ISDIR(sb.st_mode)) {
|
|
error("\"%s\" is not a directory", src);
|
|
return -1;
|
|
}
|
|
if (print_flag && print_flag != SFTP_PROGRESS_ONLY)
|
|
mprintf("Entering %s\n", src);
|
|
|
|
stat_to_attrib(&sb, &a);
|
|
a.flags &= ~SSH2_FILEXFER_ATTR_SIZE;
|
|
a.flags &= ~SSH2_FILEXFER_ATTR_UIDGID;
|
|
a.perm &= 01777;
|
|
if (!preserve_flag)
|
|
a.flags &= ~SSH2_FILEXFER_ATTR_ACMODTIME;
|
|
|
|
/*
|
|
* sftp lacks a portable status value to match errno EEXIST,
|
|
* so if we get a failure back then we must check whether
|
|
* the path already existed and is a directory. Ensure we can
|
|
* write to the directory we create for the duration of the transfer.
|
|
*/
|
|
saved_perm = a.perm;
|
|
a.perm |= (S_IWUSR|S_IXUSR);
|
|
if (do_mkdir(conn, dst, &a, 0) != 0) {
|
|
if ((dirattrib = do_stat(conn, dst, 0)) == NULL)
|
|
return -1;
|
|
if (!S_ISDIR(dirattrib->perm)) {
|
|
error("\"%s\" exists but is not a directory", dst);
|
|
return -1;
|
|
}
|
|
}
|
|
a.perm = saved_perm;
|
|
|
|
if ((dirp = opendir(src)) == NULL) {
|
|
error("Failed to open dir \"%s\": %s", src, strerror(errno));
|
|
return -1;
|
|
}
|
|
|
|
while (((dp = readdir(dirp)) != NULL) && !interrupted) {
|
|
if (dp->d_ino == 0)
|
|
continue;
|
|
free(new_dst);
|
|
free(new_src);
|
|
filename = dp->d_name;
|
|
new_dst = path_append(dst, filename);
|
|
new_src = path_append(src, filename);
|
|
|
|
if (lstat(new_src, &sb) == -1) {
|
|
logit("%s: lstat failed: %s", filename,
|
|
strerror(errno));
|
|
ret = -1;
|
|
} else if (S_ISDIR(sb.st_mode)) {
|
|
if (strcmp(filename, ".") == 0 ||
|
|
strcmp(filename, "..") == 0)
|
|
continue;
|
|
|
|
if (upload_dir_internal(conn, new_src, new_dst,
|
|
depth + 1, preserve_flag, print_flag, resume,
|
|
fsync_flag, follow_link_flag) == -1)
|
|
ret = -1;
|
|
} else if (S_ISREG(sb.st_mode) ||
|
|
(follow_link_flag && S_ISLNK(sb.st_mode))) {
|
|
if (do_upload(conn, new_src, new_dst,
|
|
preserve_flag, resume, fsync_flag) == -1) {
|
|
error("Uploading of file %s to %s failed!",
|
|
new_src, new_dst);
|
|
ret = -1;
|
|
}
|
|
} else
|
|
logit("%s: not a regular file\n", filename);
|
|
}
|
|
free(new_dst);
|
|
free(new_src);
|
|
|
|
do_setstat(conn, dst, &a);
|
|
|
|
(void) closedir(dirp);
|
|
return ret;
|
|
}
|
|
|
|
int
|
|
upload_dir(struct sftp_conn *conn, const char *src, const char *dst,
|
|
int preserve_flag, int print_flag, int resume, int fsync_flag,
|
|
int follow_link_flag)
|
|
{
|
|
char *dst_canon;
|
|
int ret;
|
|
|
|
if ((dst_canon = do_realpath(conn, dst)) == NULL) {
|
|
error("Unable to canonicalize path \"%s\"", dst);
|
|
return -1;
|
|
}
|
|
|
|
ret = upload_dir_internal(conn, src, dst_canon, 0, preserve_flag,
|
|
print_flag, resume, fsync_flag, follow_link_flag);
|
|
|
|
free(dst_canon);
|
|
return ret;
|
|
}
|
|
|
|
static void
|
|
handle_dest_replies(struct sftp_conn *to, const char *to_path, int synchronous,
|
|
u_int *nreqsp, u_int *write_errorp)
|
|
{
|
|
struct sshbuf *msg;
|
|
u_char type;
|
|
u_int id, status;
|
|
int r;
|
|
struct pollfd pfd;
|
|
|
|
if ((msg = sshbuf_new()) == NULL)
|
|
fatal_f("sshbuf_new failed");
|
|
|
|
/* Try to eat replies from the upload side */
|
|
while (*nreqsp > 0) {
|
|
debug3_f("%u outstanding replies", *nreqsp);
|
|
if (!synchronous) {
|
|
/* Bail out if no data is ready to be read */
|
|
pfd.fd = to->fd_in;
|
|
pfd.events = POLLIN;
|
|
if ((r = poll(&pfd, 1, 0)) == -1) {
|
|
if (errno == EINTR)
|
|
break;
|
|
fatal_f("poll: %s", strerror(errno));
|
|
} else if (r == 0)
|
|
break; /* fd not ready */
|
|
}
|
|
sshbuf_reset(msg);
|
|
get_msg(to, msg);
|
|
|
|
if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
|
|
(r = sshbuf_get_u32(msg, &id)) != 0)
|
|
fatal_fr(r, "dest parse");
|
|
debug3("Received dest reply T:%u I:%u R:%u", type, id, *nreqsp);
|
|
if (type != SSH2_FXP_STATUS) {
|
|
fatal_f("Expected SSH2_FXP_STATUS(%d) packet, got %d",
|
|
SSH2_FXP_STATUS, type);
|
|
}
|
|
if ((r = sshbuf_get_u32(msg, &status)) != 0)
|
|
fatal_fr(r, "parse dest status");
|
|
debug3("dest SSH2_FXP_STATUS %u", status);
|
|
if (status != SSH2_FX_OK) {
|
|
/* record first error */
|
|
if (*write_errorp == 0)
|
|
*write_errorp = status;
|
|
}
|
|
/*
|
|
* XXX this doesn't do full reply matching like do_upload and
|
|
* so cannot gracefully truncate terminated uploads at a
|
|
* high-water mark. ATM the only caller of this function (scp)
|
|
* doesn't support transfer resumption, so this doesn't matter
|
|
* a whole lot.
|
|
*
|
|
* To be safe, do_crossload truncates the destination file to
|
|
* zero length on upload failure, since we can't trust the
|
|
* server not to have reordered replies that could have
|
|
* inserted holes where none existed in the source file.
|
|
*
|
|
* XXX we could get a more accutate progress bar if we updated
|
|
* the counter based on the reply from the destination...
|
|
*/
|
|
(*nreqsp)--;
|
|
}
|
|
debug3_f("done: %u outstanding replies", *nreqsp);
|
|
}
|
|
|
|
int
|
|
do_crossload(struct sftp_conn *from, struct sftp_conn *to,
|
|
const char *from_path, const char *to_path,
|
|
Attrib *a, int preserve_flag)
|
|
{
|
|
struct sshbuf *msg;
|
|
int write_error, read_error, r;
|
|
u_int64_t offset = 0, size;
|
|
u_int id, buflen, num_req, max_req, status = SSH2_FX_OK;
|
|
u_int num_upload_req;
|
|
off_t progress_counter;
|
|
u_char *from_handle, *to_handle;
|
|
size_t from_handle_len, to_handle_len;
|
|
struct requests requests;
|
|
struct request *req;
|
|
u_char type;
|
|
|
|
TAILQ_INIT(&requests);
|
|
|
|
if (a == NULL && (a = do_stat(from, from_path, 0)) == NULL)
|
|
return -1;
|
|
|
|
if ((a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) &&
|
|
(!S_ISREG(a->perm))) {
|
|
error("Cannot download non-regular file: %s", from_path);
|
|
return(-1);
|
|
}
|
|
if (a->flags & SSH2_FILEXFER_ATTR_SIZE)
|
|
size = a->size;
|
|
else
|
|
size = 0;
|
|
|
|
buflen = from->download_buflen;
|
|
if (buflen > to->upload_buflen)
|
|
buflen = to->upload_buflen;
|
|
|
|
/* Send open request to read side */
|
|
if (send_open(from, from_path, "origin", SSH2_FXF_READ, NULL,
|
|
&from_handle, &from_handle_len) != 0)
|
|
return -1;
|
|
|
|
/* Send open request to write side */
|
|
a->flags &= ~SSH2_FILEXFER_ATTR_SIZE;
|
|
a->flags &= ~SSH2_FILEXFER_ATTR_UIDGID;
|
|
a->perm &= 0777;
|
|
if (!preserve_flag)
|
|
a->flags &= ~SSH2_FILEXFER_ATTR_ACMODTIME;
|
|
if (send_open(to, to_path, "dest",
|
|
SSH2_FXF_WRITE|SSH2_FXF_CREAT|SSH2_FXF_TRUNC, a,
|
|
&to_handle, &to_handle_len) != 0) {
|
|
do_close(from, from_handle, from_handle_len);
|
|
return -1;
|
|
}
|
|
|
|
/* Read from remote "from" and write to remote "to" */
|
|
offset = 0;
|
|
write_error = read_error = num_req = num_upload_req = 0;
|
|
max_req = 1;
|
|
progress_counter = 0;
|
|
|
|
if (showprogress && size != 0) {
|
|
start_progress_meter(progress_meter_path(from_path),
|
|
size, &progress_counter);
|
|
}
|
|
if ((msg = sshbuf_new()) == NULL)
|
|
fatal_f("sshbuf_new failed");
|
|
while (num_req > 0 || max_req > 0) {
|
|
u_char *data;
|
|
size_t len;
|
|
|
|
/*
|
|
* Simulate EOF on interrupt: stop sending new requests and
|
|
* allow outstanding requests to drain gracefully
|
|
*/
|
|
if (interrupted) {
|
|
if (num_req == 0) /* If we haven't started yet... */
|
|
break;
|
|
max_req = 0;
|
|
}
|
|
|
|
/* Send some more requests */
|
|
while (num_req < max_req) {
|
|
debug3("Request range %llu -> %llu (%d/%d)",
|
|
(unsigned long long)offset,
|
|
(unsigned long long)offset + buflen - 1,
|
|
num_req, max_req);
|
|
req = request_enqueue(&requests, from->msg_id++,
|
|
buflen, offset);
|
|
offset += buflen;
|
|
num_req++;
|
|
send_read_request(from, req->id, req->offset,
|
|
req->len, from_handle, from_handle_len);
|
|
}
|
|
|
|
/* Try to eat replies from the upload side (nonblocking) */
|
|
handle_dest_replies(to, to_path, 0,
|
|
&num_upload_req, &write_error);
|
|
|
|
sshbuf_reset(msg);
|
|
get_msg(from, msg);
|
|
if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
|
|
(r = sshbuf_get_u32(msg, &id)) != 0)
|
|
fatal_fr(r, "parse");
|
|
debug3("Received origin reply T:%u I:%u R:%d",
|
|
type, id, max_req);
|
|
|
|
/* Find the request in our queue */
|
|
if ((req = request_find(&requests, id)) == NULL)
|
|
fatal("Unexpected reply %u", id);
|
|
|
|
switch (type) {
|
|
case SSH2_FXP_STATUS:
|
|
if ((r = sshbuf_get_u32(msg, &status)) != 0)
|
|
fatal_fr(r, "parse status");
|
|
if (status != SSH2_FX_EOF)
|
|
read_error = 1;
|
|
max_req = 0;
|
|
TAILQ_REMOVE(&requests, req, tq);
|
|
free(req);
|
|
num_req--;
|
|
break;
|
|
case SSH2_FXP_DATA:
|
|
if ((r = sshbuf_get_string(msg, &data, &len)) != 0)
|
|
fatal_fr(r, "parse data");
|
|
debug3("Received data %llu -> %llu",
|
|
(unsigned long long)req->offset,
|
|
(unsigned long long)req->offset + len - 1);
|
|
if (len > req->len)
|
|
fatal("Received more data than asked for "
|
|
"%zu > %zu", len, req->len);
|
|
|
|
/* Write this chunk out to the destination */
|
|
sshbuf_reset(msg);
|
|
if ((r = sshbuf_put_u8(msg, SSH2_FXP_WRITE)) != 0 ||
|
|
(r = sshbuf_put_u32(msg, to->msg_id++)) != 0 ||
|
|
(r = sshbuf_put_string(msg, to_handle,
|
|
to_handle_len)) != 0 ||
|
|
(r = sshbuf_put_u64(msg, req->offset)) != 0 ||
|
|
(r = sshbuf_put_string(msg, data, len)) != 0)
|
|
fatal_fr(r, "compose write");
|
|
send_msg(to, msg);
|
|
debug3("Sent message SSH2_FXP_WRITE I:%u O:%llu S:%zu",
|
|
id, (unsigned long long)offset, len);
|
|
num_upload_req++;
|
|
progress_counter += len;
|
|
free(data);
|
|
|
|
if (len == req->len) {
|
|
TAILQ_REMOVE(&requests, req, tq);
|
|
free(req);
|
|
num_req--;
|
|
} else {
|
|
/* Resend the request for the missing data */
|
|
debug3("Short data block, re-requesting "
|
|
"%llu -> %llu (%2d)",
|
|
(unsigned long long)req->offset + len,
|
|
(unsigned long long)req->offset +
|
|
req->len - 1, num_req);
|
|
req->id = from->msg_id++;
|
|
req->len -= len;
|
|
req->offset += len;
|
|
send_read_request(from, req->id,
|
|
req->offset, req->len,
|
|
from_handle, from_handle_len);
|
|
/* Reduce the request size */
|
|
if (len < buflen)
|
|
buflen = MAXIMUM(MIN_READ_SIZE, len);
|
|
}
|
|
if (max_req > 0) { /* max_req = 0 iff EOF received */
|
|
if (size > 0 && offset > size) {
|
|
/* Only one request at a time
|
|
* after the expected EOF */
|
|
debug3("Finish at %llu (%2d)",
|
|
(unsigned long long)offset,
|
|
num_req);
|
|
max_req = 1;
|
|
} else if (max_req < from->num_requests) {
|
|
++max_req;
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
fatal("Expected SSH2_FXP_DATA(%u) packet, got %u",
|
|
SSH2_FXP_DATA, type);
|
|
}
|
|
}
|
|
|
|
if (showprogress && size)
|
|
stop_progress_meter();
|
|
|
|
/* Drain replies from the server (blocking) */
|
|
debug3_f("waiting for %u replies from destination", num_upload_req);
|
|
handle_dest_replies(to, to_path, 1, &num_upload_req, &write_error);
|
|
|
|
/* Sanity check */
|
|
if (TAILQ_FIRST(&requests) != NULL)
|
|
fatal("Transfer complete, but requests still in queue");
|
|
/* Truncate at 0 length on interrupt or error to avoid holes at dest */
|
|
if (read_error || write_error || interrupted) {
|
|
debug("truncating \"%s\" at 0", to_path);
|
|
do_close(to, to_handle, to_handle_len);
|
|
free(to_handle);
|
|
if (send_open(to, to_path, "dest",
|
|
SSH2_FXF_WRITE|SSH2_FXF_CREAT|SSH2_FXF_TRUNC, a,
|
|
&to_handle, &to_handle_len) != 0) {
|
|
error("truncation failed for \"%s\"", to_path);
|
|
to_handle = NULL;
|
|
}
|
|
}
|
|
if (read_error) {
|
|
error("Couldn't read from origin file \"%s\" : %s",
|
|
from_path, fx2txt(status));
|
|
status = -1;
|
|
do_close(from, from_handle, from_handle_len);
|
|
if (to_handle != NULL)
|
|
do_close(to, to_handle, to_handle_len);
|
|
} else if (write_error) {
|
|
error("Couldn't write to \"%s\": %s",
|
|
to_path, fx2txt(write_error));
|
|
status = SSH2_FX_FAILURE;
|
|
do_close(from, from_handle, from_handle_len);
|
|
if (to_handle != NULL)
|
|
do_close(to, to_handle, to_handle_len);
|
|
} else {
|
|
if (do_close(from, from_handle, from_handle_len) != 0 ||
|
|
interrupted)
|
|
status = -1;
|
|
else
|
|
status = SSH2_FX_OK;
|
|
if (to_handle != NULL) {
|
|
/* Need to resend utimes after write */
|
|
if (preserve_flag)
|
|
do_fsetstat(to, to_handle, to_handle_len, a);
|
|
do_close(to, to_handle, to_handle_len);
|
|
}
|
|
}
|
|
sshbuf_free(msg);
|
|
free(from_handle);
|
|
free(to_handle);
|
|
|
|
return status == SSH2_FX_OK ? 0 : -1;
|
|
}
|
|
|
|
static int
|
|
crossload_dir_internal(struct sftp_conn *from, struct sftp_conn *to,
|
|
const char *from_path, const char *to_path,
|
|
int depth, Attrib *dirattrib, int preserve_flag, int print_flag,
|
|
int follow_link_flag)
|
|
{
|
|
int i, ret = 0;
|
|
SFTP_DIRENT **dir_entries;
|
|
char *filename, *new_from_path = NULL, *new_to_path = NULL;
|
|
mode_t mode = 0777;
|
|
Attrib curdir;
|
|
|
|
if (depth >= MAX_DIR_DEPTH) {
|
|
error("Maximum directory depth exceeded: %d levels", depth);
|
|
return -1;
|
|
}
|
|
|
|
if (dirattrib == NULL &&
|
|
(dirattrib = do_stat(from, from_path, 1)) == NULL) {
|
|
error("Unable to stat remote directory \"%s\"", from_path);
|
|
return -1;
|
|
}
|
|
if (!S_ISDIR(dirattrib->perm)) {
|
|
error("\"%s\" is not a directory", from_path);
|
|
return -1;
|
|
}
|
|
if (print_flag && print_flag != SFTP_PROGRESS_ONLY)
|
|
mprintf("Retrieving %s\n", from_path);
|
|
|
|
curdir = *dirattrib; /* dirattrib will be clobbered */
|
|
curdir.flags &= ~SSH2_FILEXFER_ATTR_SIZE;
|
|
curdir.flags &= ~SSH2_FILEXFER_ATTR_UIDGID;
|
|
if ((curdir.flags & SSH2_FILEXFER_ATTR_PERMISSIONS) == 0) {
|
|
debug("Origin did not send permissions for "
|
|
"directory \"%s\"", to_path);
|
|
curdir.perm = S_IWUSR|S_IXUSR;
|
|
curdir.flags |= SSH2_FILEXFER_ATTR_PERMISSIONS;
|
|
}
|
|
/* We need to be able to write to the directory while we transfer it */
|
|
mode = curdir.perm & 01777;
|
|
curdir.perm = mode | (S_IWUSR|S_IXUSR);
|
|
|
|
/*
|
|
* sftp lacks a portable status value to match errno EEXIST,
|
|
* so if we get a failure back then we must check whether
|
|
* the path already existed and is a directory. Ensure we can
|
|
* write to the directory we create for the duration of the transfer.
|
|
*/
|
|
if (do_mkdir(to, to_path, &curdir, 0) != 0) {
|
|
if ((dirattrib = do_stat(to, to_path, 0)) == NULL)
|
|
return -1;
|
|
if (!S_ISDIR(dirattrib->perm)) {
|
|
error("\"%s\" exists but is not a directory", to_path);
|
|
return -1;
|
|
}
|
|
}
|
|
curdir.perm = mode;
|
|
|
|
if (do_readdir(from, from_path, &dir_entries) == -1) {
|
|
error("%s: Failed to get directory contents", from_path);
|
|
return -1;
|
|
}
|
|
|
|
for (i = 0; dir_entries[i] != NULL && !interrupted; i++) {
|
|
free(new_from_path);
|
|
free(new_to_path);
|
|
|
|
filename = dir_entries[i]->filename;
|
|
new_from_path = path_append(from_path, filename);
|
|
new_to_path = path_append(to_path, filename);
|
|
|
|
if (S_ISDIR(dir_entries[i]->a.perm)) {
|
|
if (strcmp(filename, ".") == 0 ||
|
|
strcmp(filename, "..") == 0)
|
|
continue;
|
|
if (crossload_dir_internal(from, to,
|
|
new_from_path, new_to_path,
|
|
depth + 1, &(dir_entries[i]->a), preserve_flag,
|
|
print_flag, follow_link_flag) == -1)
|
|
ret = -1;
|
|
} else if (S_ISREG(dir_entries[i]->a.perm) ||
|
|
(follow_link_flag && S_ISLNK(dir_entries[i]->a.perm))) {
|
|
/*
|
|
* If this is a symlink then don't send the link's
|
|
* Attrib. do_download() will do a FXP_STAT operation
|
|
* and get the link target's attributes.
|
|
*/
|
|
if (do_crossload(from, to, new_from_path, new_to_path,
|
|
S_ISLNK(dir_entries[i]->a.perm) ? NULL :
|
|
&(dir_entries[i]->a), preserve_flag) == -1) {
|
|
error("Transfer of file %s to %s failed",
|
|
new_from_path, new_to_path);
|
|
ret = -1;
|
|
}
|
|
} else
|
|
logit("%s: not a regular file\n", new_from_path);
|
|
|
|
}
|
|
free(new_to_path);
|
|
free(new_from_path);
|
|
|
|
do_setstat(to, to_path, &curdir);
|
|
|
|
free_sftp_dirents(dir_entries);
|
|
|
|
return ret;
|
|
}
|
|
|
|
int
|
|
crossload_dir(struct sftp_conn *from, struct sftp_conn *to,
|
|
const char *from_path, const char *to_path,
|
|
Attrib *dirattrib, int preserve_flag, int print_flag, int follow_link_flag)
|
|
{
|
|
char *from_path_canon;
|
|
int ret;
|
|
|
|
if ((from_path_canon = do_realpath(from, from_path)) == NULL) {
|
|
error("Unable to canonicalize path \"%s\"", from_path);
|
|
return -1;
|
|
}
|
|
|
|
ret = crossload_dir_internal(from, to, from_path_canon, to_path, 0,
|
|
dirattrib, preserve_flag, print_flag, follow_link_flag);
|
|
free(from_path_canon);
|
|
return ret;
|
|
}
|
|
|
|
char *
|
|
path_append(const char *p1, const char *p2)
|
|
{
|
|
char *ret;
|
|
size_t len = strlen(p1) + strlen(p2) + 2;
|
|
|
|
ret = xmalloc(len);
|
|
strlcpy(ret, p1, len);
|
|
if (p1[0] != '\0' && p1[strlen(p1) - 1] != '/')
|
|
strlcat(ret, "/", len);
|
|
strlcat(ret, p2, len);
|
|
|
|
return(ret);
|
|
}
|
|
|
|
char *
|
|
make_absolute(char *p, const char *pwd)
|
|
{
|
|
char *abs_str;
|
|
|
|
/* Derelativise */
|
|
if (p && !path_absolute(p)) {
|
|
abs_str = path_append(pwd, p);
|
|
free(p);
|
|
return(abs_str);
|
|
} else
|
|
return(p);
|
|
}
|
|
|
|
int
|
|
remote_is_dir(struct sftp_conn *conn, const char *path)
|
|
{
|
|
Attrib *a;
|
|
|
|
/* XXX: report errors? */
|
|
if ((a = do_stat(conn, path, 1)) == NULL)
|
|
return(0);
|
|
if (!(a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS))
|
|
return(0);
|
|
return(S_ISDIR(a->perm));
|
|
}
|
|
|
|
|
|
int
|
|
local_is_dir(const char *path)
|
|
{
|
|
struct stat sb;
|
|
|
|
/* XXX: report errors? */
|
|
if (stat(path, &sb) == -1)
|
|
return(0);
|
|
|
|
return(S_ISDIR(sb.st_mode));
|
|
}
|
|
|
|
/* Check whether path returned from glob(..., GLOB_MARK, ...) is a directory */
|
|
int
|
|
globpath_is_dir(const char *pathname)
|
|
{
|
|
size_t l = strlen(pathname);
|
|
|
|
return l > 0 && pathname[l - 1] == '/';
|
|
}
|
|
|