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/* $OpenBSD: sftp-client.c,v 1.127 2017/08/11 04:41:08 djm 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 <sys/types.h> |
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#include <sys/poll.h> |
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#include <sys/queue.h> |
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#include <sys/stat.h> |
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#include <sys/time.h> |
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#include <sys/statvfs.h> |
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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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#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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/* 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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struct sftp_conn { |
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int fd_in; |
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int fd_out; |
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u_int transfer_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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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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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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/* 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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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, |
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conn->limit_kbps > 0 ? sftpio : NULL, &conn->bwlimit_out) != |
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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(struct sftp_conn *conn, struct sshbuf *m) |
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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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if ((r = sshbuf_reserve(m, 4, &p)) != 0) |
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fatal("%s: buffer error: %s", __func__, ssh_err(r)); |
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if (atomicio6(read, conn->fd_in, p, 4, |
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conn->limit_kbps > 0 ? sftpio : NULL, &conn->bwlimit_in) != 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("%s: buffer error: %s", __func__, ssh_err(r)); |
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if (msg_len > SFTP_MAX_MSG_LENGTH) |
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fatal("Received message too long %u", msg_len); |
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if ((r = sshbuf_reserve(m, msg_len, &p)) != 0) |
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fatal("%s: buffer error: %s", __func__, ssh_err(r)); |
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if (atomicio6(read, conn->fd_in, p, msg_len, |
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conn->limit_kbps > 0 ? sftpio : NULL, &conn->bwlimit_in) |
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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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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("%s: sshbuf_new failed", __func__); |
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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("%s: buffer error: %s", __func__, ssh_err(r)); |
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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("%s: sshbuf_new failed", __func__); |
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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("%s: buffer error: %s", __func__, ssh_err(r)); |
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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 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("%s: sshbuf_new failed", __func__); |
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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("%s: buffer error: %s", __func__, ssh_err(r)); |
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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("%s: buffer error: %s", __func__, ssh_err(r)); |
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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("%s: sshbuf_new failed", __func__); |
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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("%s: buffer error: %s", __func__, ssh_err(r)); |
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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("%s: buffer error: %s", __func__, ssh_err(r)); |
249 |
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if (errfmt != NULL) |
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error("%s: %s", errmsg, fx2txt(status)); |
251 |
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sshbuf_free(msg); |
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return(NULL); |
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} else if (type != SSH2_FXP_HANDLE) |
254 |
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fatal("%s: Expected SSH2_FXP_HANDLE(%u) packet, got %u", |
255 |
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errfmt == NULL ? __func__ : errmsg, SSH2_FXP_HANDLE, type); |
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257 |
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if ((r = sshbuf_get_string(msg, &handle, len)) != 0) |
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fatal("%s: buffer error: %s", __func__, ssh_err(r)); |
259 |
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sshbuf_free(msg); |
260 |
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261 |
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return handle; |
262 |
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} |
263 |
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264 |
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static Attrib * |
265 |
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get_decode_stat(struct sftp_conn *conn, u_int expected_id, int quiet) |
266 |
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{ |
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struct sshbuf *msg; |
268 |
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u_int id; |
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u_char type; |
270 |
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int r; |
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static Attrib a; |
272 |
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273 |
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if ((msg = sshbuf_new()) == NULL) |
274 |
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fatal("%s: sshbuf_new failed", __func__); |
275 |
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get_msg(conn, msg); |
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277 |
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if ((r = sshbuf_get_u8(msg, &type)) != 0 || |
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(r = sshbuf_get_u32(msg, &id)) != 0) |
279 |
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fatal("%s: buffer error: %s", __func__, ssh_err(r)); |
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281 |
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debug3("Received stat reply T:%u I:%u", type, id); |
282 |
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if (id != expected_id) |
283 |
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fatal("ID mismatch (%u != %u)", id, expected_id); |
284 |
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if (type == SSH2_FXP_STATUS) { |
285 |
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u_int status; |
286 |
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287 |
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if ((r = sshbuf_get_u32(msg, &status)) != 0) |
288 |
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fatal("%s: buffer error: %s", __func__, ssh_err(r)); |
289 |
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if (quiet) |
290 |
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debug("Couldn't stat remote file: %s", fx2txt(status)); |
291 |
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else |
292 |
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error("Couldn't stat remote file: %s", fx2txt(status)); |
293 |
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sshbuf_free(msg); |
294 |
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return(NULL); |
295 |
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} else if (type != SSH2_FXP_ATTRS) { |
296 |
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fatal("Expected SSH2_FXP_ATTRS(%u) packet, got %u", |
297 |
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SSH2_FXP_ATTRS, type); |
298 |
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} |
299 |
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if ((r = decode_attrib(msg, &a)) != 0) { |
300 |
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error("%s: couldn't decode attrib: %s", __func__, ssh_err(r)); |
301 |
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sshbuf_free(msg); |
302 |
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return NULL; |
303 |
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} |
304 |
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sshbuf_free(msg); |
305 |
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306 |
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return &a; |
307 |
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} |
308 |
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309 |
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static int |
310 |
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get_decode_statvfs(struct sftp_conn *conn, struct sftp_statvfs *st, |
311 |
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u_int expected_id, int quiet) |
312 |
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{ |
313 |
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struct sshbuf *msg; |
314 |
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u_char type; |
315 |
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u_int id; |
316 |
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u_int64_t flag; |
317 |
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int r; |
318 |
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319 |
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if ((msg = sshbuf_new()) == NULL) |
320 |
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fatal("%s: sshbuf_new failed", __func__); |
321 |
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get_msg(conn, msg); |
322 |
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323 |
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if ((r = sshbuf_get_u8(msg, &type)) != 0 || |
324 |
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(r = sshbuf_get_u32(msg, &id)) != 0) |
325 |
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fatal("%s: buffer error: %s", __func__, ssh_err(r)); |
326 |
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327 |
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debug3("Received statvfs reply T:%u I:%u", type, id); |
328 |
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if (id != expected_id) |
329 |
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fatal("ID mismatch (%u != %u)", id, expected_id); |
330 |
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if (type == SSH2_FXP_STATUS) { |
331 |
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u_int status; |
332 |
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333 |
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if ((r = sshbuf_get_u32(msg, &status)) != 0) |
334 |
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fatal("%s: buffer error: %s", __func__, ssh_err(r)); |
335 |
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if (quiet) |
336 |
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debug("Couldn't statvfs: %s", fx2txt(status)); |
337 |
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else |
338 |
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error("Couldn't statvfs: %s", fx2txt(status)); |
339 |
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sshbuf_free(msg); |
340 |
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return -1; |
341 |
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} else if (type != SSH2_FXP_EXTENDED_REPLY) { |
342 |
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fatal("Expected SSH2_FXP_EXTENDED_REPLY(%u) packet, got %u", |
343 |
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SSH2_FXP_EXTENDED_REPLY, type); |
344 |
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} |
345 |
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346 |
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memset(st, 0, sizeof(*st)); |
347 |
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if ((r = sshbuf_get_u64(msg, &st->f_bsize)) != 0 || |
348 |
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(r = sshbuf_get_u64(msg, &st->f_frsize)) != 0 || |
349 |
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(r = sshbuf_get_u64(msg, &st->f_blocks)) != 0 || |
350 |
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(r = sshbuf_get_u64(msg, &st->f_bfree)) != 0 || |
351 |
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(r = sshbuf_get_u64(msg, &st->f_bavail)) != 0 || |
352 |
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(r = sshbuf_get_u64(msg, &st->f_files)) != 0 || |
353 |
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(r = sshbuf_get_u64(msg, &st->f_ffree)) != 0 || |
354 |
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(r = sshbuf_get_u64(msg, &st->f_favail)) != 0 || |
355 |
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(r = sshbuf_get_u64(msg, &st->f_fsid)) != 0 || |
356 |
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(r = sshbuf_get_u64(msg, &flag)) != 0 || |
357 |
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(r = sshbuf_get_u64(msg, &st->f_namemax)) != 0) |
358 |
|
|
fatal("%s: buffer error: %s", __func__, ssh_err(r)); |
359 |
|
|
|
360 |
|
|
st->f_flag = (flag & SSH2_FXE_STATVFS_ST_RDONLY) ? ST_RDONLY : 0; |
361 |
|
|
st->f_flag |= (flag & SSH2_FXE_STATVFS_ST_NOSUID) ? ST_NOSUID : 0; |
362 |
|
|
|
363 |
|
|
sshbuf_free(msg); |
364 |
|
|
|
365 |
|
|
return 0; |
366 |
|
|
} |
367 |
|
|
|
368 |
|
|
struct sftp_conn * |
369 |
|
|
do_init(int fd_in, int fd_out, u_int transfer_buflen, u_int num_requests, |
370 |
|
|
u_int64_t limit_kbps) |
371 |
|
|
{ |
372 |
|
|
u_char type; |
373 |
|
|
struct sshbuf *msg; |
374 |
|
|
struct sftp_conn *ret; |
375 |
|
|
int r; |
376 |
|
|
|
377 |
|
|
ret = xcalloc(1, sizeof(*ret)); |
378 |
|
|
ret->msg_id = 1; |
379 |
|
|
ret->fd_in = fd_in; |
380 |
|
|
ret->fd_out = fd_out; |
381 |
|
|
ret->transfer_buflen = transfer_buflen; |
382 |
|
|
ret->num_requests = num_requests; |
383 |
|
|
ret->exts = 0; |
384 |
|
|
ret->limit_kbps = 0; |
385 |
|
|
|
386 |
|
|
if ((msg = sshbuf_new()) == NULL) |
387 |
|
|
fatal("%s: sshbuf_new failed", __func__); |
388 |
|
|
if ((r = sshbuf_put_u8(msg, SSH2_FXP_INIT)) != 0 || |
389 |
|
|
(r = sshbuf_put_u32(msg, SSH2_FILEXFER_VERSION)) != 0) |
390 |
|
|
fatal("%s: buffer error: %s", __func__, ssh_err(r)); |
391 |
|
|
send_msg(ret, msg); |
392 |
|
|
|
393 |
|
|
sshbuf_reset(msg); |
394 |
|
|
|
395 |
|
|
get_msg(ret, msg); |
396 |
|
|
|
397 |
|
|
/* Expecting a VERSION reply */ |
398 |
|
|
if ((r = sshbuf_get_u8(msg, &type)) != 0) |
399 |
|
|
fatal("%s: buffer error: %s", __func__, ssh_err(r)); |
400 |
|
|
if (type != SSH2_FXP_VERSION) { |
401 |
|
|
error("Invalid packet back from SSH2_FXP_INIT (type %u)", |
402 |
|
|
type); |
403 |
|
|
sshbuf_free(msg); |
404 |
|
|
free(ret); |
405 |
|
|
return(NULL); |
406 |
|
|
} |
407 |
|
|
if ((r = sshbuf_get_u32(msg, &ret->version)) != 0) |
408 |
|
|
fatal("%s: buffer error: %s", __func__, ssh_err(r)); |
409 |
|
|
|
410 |
|
|
debug2("Remote version: %u", ret->version); |
411 |
|
|
|
412 |
|
|
/* Check for extensions */ |
413 |
|
|
while (sshbuf_len(msg) > 0) { |
414 |
|
|
char *name; |
415 |
|
|
u_char *value; |
416 |
|
|
size_t vlen; |
417 |
|
|
int known = 0; |
418 |
|
|
|
419 |
|
|
if ((r = sshbuf_get_cstring(msg, &name, NULL)) != 0 || |
420 |
|
|
(r = sshbuf_get_string(msg, &value, &vlen)) != 0) |
421 |
|
|
fatal("%s: buffer error: %s", __func__, ssh_err(r)); |
422 |
|
|
if (strcmp(name, "posix-rename@openssh.com") == 0 && |
423 |
|
|
strcmp((char *)value, "1") == 0) { |
424 |
|
|
ret->exts |= SFTP_EXT_POSIX_RENAME; |
425 |
|
|
known = 1; |
426 |
|
|
} else if (strcmp(name, "statvfs@openssh.com") == 0 && |
427 |
|
|
strcmp((char *)value, "2") == 0) { |
428 |
|
|
ret->exts |= SFTP_EXT_STATVFS; |
429 |
|
|
known = 1; |
430 |
|
|
} else if (strcmp(name, "fstatvfs@openssh.com") == 0 && |
431 |
|
|
strcmp((char *)value, "2") == 0) { |
432 |
|
|
ret->exts |= SFTP_EXT_FSTATVFS; |
433 |
|
|
known = 1; |
434 |
|
|
} else if (strcmp(name, "hardlink@openssh.com") == 0 && |
435 |
|
|
strcmp((char *)value, "1") == 0) { |
436 |
|
|
ret->exts |= SFTP_EXT_HARDLINK; |
437 |
|
|
known = 1; |
438 |
|
|
} else if (strcmp(name, "fsync@openssh.com") == 0 && |
439 |
|
|
strcmp((char *)value, "1") == 0) { |
440 |
|
|
ret->exts |= SFTP_EXT_FSYNC; |
441 |
|
|
known = 1; |
442 |
|
|
} |
443 |
|
|
if (known) { |
444 |
|
|
debug2("Server supports extension \"%s\" revision %s", |
445 |
|
|
name, value); |
446 |
|
|
} else { |
447 |
|
|
debug2("Unrecognised server extension \"%s\"", name); |
448 |
|
|
} |
449 |
|
|
free(name); |
450 |
|
|
free(value); |
451 |
|
|
} |
452 |
|
|
|
453 |
|
|
sshbuf_free(msg); |
454 |
|
|
|
455 |
|
|
/* Some filexfer v.0 servers don't support large packets */ |
456 |
|
|
if (ret->version == 0) |
457 |
|
|
ret->transfer_buflen = MINIMUM(ret->transfer_buflen, 20480); |
458 |
|
|
|
459 |
|
|
ret->limit_kbps = limit_kbps; |
460 |
|
|
if (ret->limit_kbps > 0) { |
461 |
|
|
bandwidth_limit_init(&ret->bwlimit_in, ret->limit_kbps, |
462 |
|
|
ret->transfer_buflen); |
463 |
|
|
bandwidth_limit_init(&ret->bwlimit_out, ret->limit_kbps, |
464 |
|
|
ret->transfer_buflen); |
465 |
|
|
} |
466 |
|
|
|
467 |
|
|
return ret; |
468 |
|
|
} |
469 |
|
|
|
470 |
|
|
u_int |
471 |
|
|
sftp_proto_version(struct sftp_conn *conn) |
472 |
|
|
{ |
473 |
|
|
return conn->version; |
474 |
|
|
} |
475 |
|
|
|
476 |
|
|
int |
477 |
|
|
do_close(struct sftp_conn *conn, const u_char *handle, u_int handle_len) |
478 |
|
|
{ |
479 |
|
|
u_int id, status; |
480 |
|
|
struct sshbuf *msg; |
481 |
|
|
int r; |
482 |
|
|
|
483 |
|
|
if ((msg = sshbuf_new()) == NULL) |
484 |
|
|
fatal("%s: sshbuf_new failed", __func__); |
485 |
|
|
|
486 |
|
|
id = conn->msg_id++; |
487 |
|
|
if ((r = sshbuf_put_u8(msg, SSH2_FXP_CLOSE)) != 0 || |
488 |
|
|
(r = sshbuf_put_u32(msg, id)) != 0 || |
489 |
|
|
(r = sshbuf_put_string(msg, handle, handle_len)) != 0) |
490 |
|
|
fatal("%s: buffer error: %s", __func__, ssh_err(r)); |
491 |
|
|
send_msg(conn, msg); |
492 |
|
|
debug3("Sent message SSH2_FXP_CLOSE I:%u", id); |
493 |
|
|
|
494 |
|
|
status = get_status(conn, id); |
495 |
|
|
if (status != SSH2_FX_OK) |
496 |
|
|
error("Couldn't close file: %s", fx2txt(status)); |
497 |
|
|
|
498 |
|
|
sshbuf_free(msg); |
499 |
|
|
|
500 |
|
|
return status == SSH2_FX_OK ? 0 : -1; |
501 |
|
|
} |
502 |
|
|
|
503 |
|
|
|
504 |
|
|
static int |
505 |
|
|
do_lsreaddir(struct sftp_conn *conn, const char *path, int print_flag, |
506 |
|
|
SFTP_DIRENT ***dir) |
507 |
|
|
{ |
508 |
|
|
struct sshbuf *msg; |
509 |
|
|
u_int count, id, i, expected_id, ents = 0; |
510 |
|
|
size_t handle_len; |
511 |
|
|
u_char type, *handle; |
512 |
|
|
int status = SSH2_FX_FAILURE; |
513 |
|
|
int r; |
514 |
|
|
|
515 |
|
|
if (dir) |
516 |
|
|
*dir = NULL; |
517 |
|
|
|
518 |
|
|
id = conn->msg_id++; |
519 |
|
|
|
520 |
|
|
if ((msg = sshbuf_new()) == NULL) |
521 |
|
|
fatal("%s: sshbuf_new failed", __func__); |
522 |
|
|
if ((r = sshbuf_put_u8(msg, SSH2_FXP_OPENDIR)) != 0 || |
523 |
|
|
(r = sshbuf_put_u32(msg, id)) != 0 || |
524 |
|
|
(r = sshbuf_put_cstring(msg, path)) != 0) |
525 |
|
|
fatal("%s: buffer error: %s", __func__, ssh_err(r)); |
526 |
|
|
send_msg(conn, msg); |
527 |
|
|
|
528 |
|
|
handle = get_handle(conn, id, &handle_len, |
529 |
|
|
"remote readdir(\"%s\")", path); |
530 |
|
|
if (handle == NULL) { |
531 |
|
|
sshbuf_free(msg); |
532 |
|
|
return -1; |
533 |
|
|
} |
534 |
|
|
|
535 |
|
|
if (dir) { |
536 |
|
|
ents = 0; |
537 |
|
|
*dir = xcalloc(1, sizeof(**dir)); |
538 |
|
|
(*dir)[0] = NULL; |
539 |
|
|
} |
540 |
|
|
|
541 |
|
|
for (; !interrupted;) { |
542 |
|
|
id = expected_id = conn->msg_id++; |
543 |
|
|
|
544 |
|
|
debug3("Sending SSH2_FXP_READDIR I:%u", id); |
545 |
|
|
|
546 |
|
|
sshbuf_reset(msg); |
547 |
|
|
if ((r = sshbuf_put_u8(msg, SSH2_FXP_READDIR)) != 0 || |
548 |
|
|
(r = sshbuf_put_u32(msg, id)) != 0 || |
549 |
|
|
(r = sshbuf_put_string(msg, handle, handle_len)) != 0) |
550 |
|
|
fatal("%s: buffer error: %s", __func__, ssh_err(r)); |
551 |
|
|
send_msg(conn, msg); |
552 |
|
|
|
553 |
|
|
sshbuf_reset(msg); |
554 |
|
|
|
555 |
|
|
get_msg(conn, msg); |
556 |
|
|
|
557 |
|
|
if ((r = sshbuf_get_u8(msg, &type)) != 0 || |
558 |
|
|
(r = sshbuf_get_u32(msg, &id)) != 0) |
559 |
|
|
fatal("%s: buffer error: %s", __func__, ssh_err(r)); |
560 |
|
|
|
561 |
|
|
debug3("Received reply T:%u I:%u", type, id); |
562 |
|
|
|
563 |
|
|
if (id != expected_id) |
564 |
|
|
fatal("ID mismatch (%u != %u)", id, expected_id); |
565 |
|
|
|
566 |
|
|
if (type == SSH2_FXP_STATUS) { |
567 |
|
|
u_int rstatus; |
568 |
|
|
|
569 |
|
|
if ((r = sshbuf_get_u32(msg, &rstatus)) != 0) |
570 |
|
|
fatal("%s: buffer error: %s", |
571 |
|
|
__func__, ssh_err(r)); |
572 |
|
|
debug3("Received SSH2_FXP_STATUS %d", rstatus); |
573 |
|
|
if (rstatus == SSH2_FX_EOF) |
574 |
|
|
break; |
575 |
|
|
error("Couldn't read directory: %s", fx2txt(rstatus)); |
576 |
|
|
goto out; |
577 |
|
|
} else if (type != SSH2_FXP_NAME) |
578 |
|
|
fatal("Expected SSH2_FXP_NAME(%u) packet, got %u", |
579 |
|
|
SSH2_FXP_NAME, type); |
580 |
|
|
|
581 |
|
|
if ((r = sshbuf_get_u32(msg, &count)) != 0) |
582 |
|
|
fatal("%s: buffer error: %s", __func__, ssh_err(r)); |
583 |
|
|
if (count > SSHBUF_SIZE_MAX) |
584 |
|
|
fatal("%s: nonsensical number of entries", __func__); |
585 |
|
|
if (count == 0) |
586 |
|
|
break; |
587 |
|
|
debug3("Received %d SSH2_FXP_NAME responses", count); |
588 |
|
|
for (i = 0; i < count; i++) { |
589 |
|
|
char *filename, *longname; |
590 |
|
|
Attrib a; |
591 |
|
|
|
592 |
|
|
if ((r = sshbuf_get_cstring(msg, &filename, |
593 |
|
|
NULL)) != 0 || |
594 |
|
|
(r = sshbuf_get_cstring(msg, &longname, |
595 |
|
|
NULL)) != 0) |
596 |
|
|
fatal("%s: buffer error: %s", |
597 |
|
|
__func__, ssh_err(r)); |
598 |
|
|
if ((r = decode_attrib(msg, &a)) != 0) { |
599 |
|
|
error("%s: couldn't decode attrib: %s", |
600 |
|
|
__func__, ssh_err(r)); |
601 |
|
|
free(filename); |
602 |
|
|
free(longname); |
603 |
|
|
sshbuf_free(msg); |
604 |
|
|
return -1; |
605 |
|
|
} |
606 |
|
|
|
607 |
|
|
if (print_flag) |
608 |
|
|
mprintf("%s\n", longname); |
609 |
|
|
|
610 |
|
|
/* |
611 |
|
|
* Directory entries should never contain '/' |
612 |
|
|
* These can be used to attack recursive ops |
613 |
|
|
* (e.g. send '../../../../etc/passwd') |
614 |
|
|
*/ |
615 |
|
|
if (strchr(filename, '/') != NULL) { |
616 |
|
|
error("Server sent suspect path \"%s\" " |
617 |
|
|
"during readdir of \"%s\"", filename, path); |
618 |
|
|
} else if (dir) { |
619 |
|
|
*dir = xreallocarray(*dir, ents + 2, sizeof(**dir)); |
620 |
|
|
(*dir)[ents] = xcalloc(1, sizeof(***dir)); |
621 |
|
|
(*dir)[ents]->filename = xstrdup(filename); |
622 |
|
|
(*dir)[ents]->longname = xstrdup(longname); |
623 |
|
|
memcpy(&(*dir)[ents]->a, &a, sizeof(a)); |
624 |
|
|
(*dir)[++ents] = NULL; |
625 |
|
|
} |
626 |
|
|
free(filename); |
627 |
|
|
free(longname); |
628 |
|
|
} |
629 |
|
|
} |
630 |
|
|
status = 0; |
631 |
|
|
|
632 |
|
|
out: |
633 |
|
|
sshbuf_free(msg); |
634 |
|
|
do_close(conn, handle, handle_len); |
635 |
|
|
free(handle); |
636 |
|
|
|
637 |
|
|
if (status != 0 && dir != NULL) { |
638 |
|
|
/* Don't return results on error */ |
639 |
|
|
free_sftp_dirents(*dir); |
640 |
|
|
*dir = NULL; |
641 |
|
|
} else if (interrupted && dir != NULL && *dir != NULL) { |
642 |
|
|
/* Don't return partial matches on interrupt */ |
643 |
|
|
free_sftp_dirents(*dir); |
644 |
|
|
*dir = xcalloc(1, sizeof(**dir)); |
645 |
|
|
**dir = NULL; |
646 |
|
|
} |
647 |
|
|
|
648 |
|
|
return status; |
649 |
|
|
} |
650 |
|
|
|
651 |
|
|
int |
652 |
|
|
do_readdir(struct sftp_conn *conn, const char *path, SFTP_DIRENT ***dir) |
653 |
|
|
{ |
654 |
|
|
return(do_lsreaddir(conn, path, 0, dir)); |
655 |
|
|
} |
656 |
|
|
|
657 |
|
|
void free_sftp_dirents(SFTP_DIRENT **s) |
658 |
|
|
{ |
659 |
|
|
int i; |
660 |
|
|
|
661 |
|
|
if (s == NULL) |
662 |
|
|
return; |
663 |
|
|
for (i = 0; s[i]; i++) { |
664 |
|
|
free(s[i]->filename); |
665 |
|
|
free(s[i]->longname); |
666 |
|
|
free(s[i]); |
667 |
|
|
} |
668 |
|
|
free(s); |
669 |
|
|
} |
670 |
|
|
|
671 |
|
|
int |
672 |
|
|
do_rm(struct sftp_conn *conn, const char *path) |
673 |
|
|
{ |
674 |
|
|
u_int status, id; |
675 |
|
|
|
676 |
|
|
debug2("Sending SSH2_FXP_REMOVE \"%s\"", path); |
677 |
|
|
|
678 |
|
|
id = conn->msg_id++; |
679 |
|
|
send_string_request(conn, id, SSH2_FXP_REMOVE, path, strlen(path)); |
680 |
|
|
status = get_status(conn, id); |
681 |
|
|
if (status != SSH2_FX_OK) |
682 |
|
|
error("Couldn't delete file: %s", fx2txt(status)); |
683 |
|
|
return status == SSH2_FX_OK ? 0 : -1; |
684 |
|
|
} |
685 |
|
|
|
686 |
|
|
int |
687 |
|
|
do_mkdir(struct sftp_conn *conn, const char *path, Attrib *a, int print_flag) |
688 |
|
|
{ |
689 |
|
|
u_int status, id; |
690 |
|
|
|
691 |
|
|
id = conn->msg_id++; |
692 |
|
|
send_string_attrs_request(conn, id, SSH2_FXP_MKDIR, path, |
693 |
|
|
strlen(path), a); |
694 |
|
|
|
695 |
|
|
status = get_status(conn, id); |
696 |
|
|
if (status != SSH2_FX_OK && print_flag) |
697 |
|
|
error("Couldn't create directory: %s", fx2txt(status)); |
698 |
|
|
|
699 |
|
|
return status == SSH2_FX_OK ? 0 : -1; |
700 |
|
|
} |
701 |
|
|
|
702 |
|
|
int |
703 |
|
|
do_rmdir(struct sftp_conn *conn, const char *path) |
704 |
|
|
{ |
705 |
|
|
u_int status, id; |
706 |
|
|
|
707 |
|
|
id = conn->msg_id++; |
708 |
|
|
send_string_request(conn, id, SSH2_FXP_RMDIR, path, |
709 |
|
|
strlen(path)); |
710 |
|
|
|
711 |
|
|
status = get_status(conn, id); |
712 |
|
|
if (status != SSH2_FX_OK) |
713 |
|
|
error("Couldn't remove directory: %s", fx2txt(status)); |
714 |
|
|
|
715 |
|
|
return status == SSH2_FX_OK ? 0 : -1; |
716 |
|
|
} |
717 |
|
|
|
718 |
|
|
Attrib * |
719 |
|
|
do_stat(struct sftp_conn *conn, const char *path, int quiet) |
720 |
|
|
{ |
721 |
|
|
u_int id; |
722 |
|
|
|
723 |
|
|
id = conn->msg_id++; |
724 |
|
|
|
725 |
|
|
send_string_request(conn, id, |
726 |
|
|
conn->version == 0 ? SSH2_FXP_STAT_VERSION_0 : SSH2_FXP_STAT, |
727 |
|
|
path, strlen(path)); |
728 |
|
|
|
729 |
|
|
return(get_decode_stat(conn, id, quiet)); |
730 |
|
|
} |
731 |
|
|
|
732 |
|
|
Attrib * |
733 |
|
|
do_lstat(struct sftp_conn *conn, const char *path, int quiet) |
734 |
|
|
{ |
735 |
|
|
u_int id; |
736 |
|
|
|
737 |
|
|
if (conn->version == 0) { |
738 |
|
|
if (quiet) |
739 |
|
|
debug("Server version does not support lstat operation"); |
740 |
|
|
else |
741 |
|
|
logit("Server version does not support lstat operation"); |
742 |
|
|
return(do_stat(conn, path, quiet)); |
743 |
|
|
} |
744 |
|
|
|
745 |
|
|
id = conn->msg_id++; |
746 |
|
|
send_string_request(conn, id, SSH2_FXP_LSTAT, path, |
747 |
|
|
strlen(path)); |
748 |
|
|
|
749 |
|
|
return(get_decode_stat(conn, id, quiet)); |
750 |
|
|
} |
751 |
|
|
|
752 |
|
|
#ifdef notyet |
753 |
|
|
Attrib * |
754 |
|
|
do_fstat(struct sftp_conn *conn, const u_char *handle, u_int handle_len, |
755 |
|
|
int quiet) |
756 |
|
|
{ |
757 |
|
|
u_int id; |
758 |
|
|
|
759 |
|
|
id = conn->msg_id++; |
760 |
|
|
send_string_request(conn, id, SSH2_FXP_FSTAT, handle, |
761 |
|
|
handle_len); |
762 |
|
|
|
763 |
|
|
return(get_decode_stat(conn, id, quiet)); |
764 |
|
|
} |
765 |
|
|
#endif |
766 |
|
|
|
767 |
|
|
int |
768 |
|
|
do_setstat(struct sftp_conn *conn, const char *path, Attrib *a) |
769 |
|
|
{ |
770 |
|
|
u_int status, id; |
771 |
|
|
|
772 |
|
|
id = conn->msg_id++; |
773 |
|
|
send_string_attrs_request(conn, id, SSH2_FXP_SETSTAT, path, |
774 |
|
|
strlen(path), a); |
775 |
|
|
|
776 |
|
|
status = get_status(conn, id); |
777 |
|
|
if (status != SSH2_FX_OK) |
778 |
|
|
error("Couldn't setstat on \"%s\": %s", path, |
779 |
|
|
fx2txt(status)); |
780 |
|
|
|
781 |
|
|
return status == SSH2_FX_OK ? 0 : -1; |
782 |
|
|
} |
783 |
|
|
|
784 |
|
|
int |
785 |
|
|
do_fsetstat(struct sftp_conn *conn, const u_char *handle, u_int handle_len, |
786 |
|
|
Attrib *a) |
787 |
|
|
{ |
788 |
|
|
u_int status, id; |
789 |
|
|
|
790 |
|
|
id = conn->msg_id++; |
791 |
|
|
send_string_attrs_request(conn, id, SSH2_FXP_FSETSTAT, handle, |
792 |
|
|
handle_len, a); |
793 |
|
|
|
794 |
|
|
status = get_status(conn, id); |
795 |
|
|
if (status != SSH2_FX_OK) |
796 |
|
|
error("Couldn't fsetstat: %s", fx2txt(status)); |
797 |
|
|
|
798 |
|
|
return status == SSH2_FX_OK ? 0 : -1; |
799 |
|
|
} |
800 |
|
|
|
801 |
|
|
char * |
802 |
|
|
do_realpath(struct sftp_conn *conn, const char *path) |
803 |
|
|
{ |
804 |
|
|
struct sshbuf *msg; |
805 |
|
|
u_int expected_id, count, id; |
806 |
|
|
char *filename, *longname; |
807 |
|
|
Attrib a; |
808 |
|
|
u_char type; |
809 |
|
|
int r; |
810 |
|
|
|
811 |
|
|
expected_id = id = conn->msg_id++; |
812 |
|
|
send_string_request(conn, id, SSH2_FXP_REALPATH, path, |
813 |
|
|
strlen(path)); |
814 |
|
|
|
815 |
|
|
if ((msg = sshbuf_new()) == NULL) |
816 |
|
|
fatal("%s: sshbuf_new failed", __func__); |
817 |
|
|
|
818 |
|
|
get_msg(conn, msg); |
819 |
|
|
if ((r = sshbuf_get_u8(msg, &type)) != 0 || |
820 |
|
|
(r = sshbuf_get_u32(msg, &id)) != 0) |
821 |
|
|
fatal("%s: buffer error: %s", __func__, ssh_err(r)); |
822 |
|
|
|
823 |
|
|
if (id != expected_id) |
824 |
|
|
fatal("ID mismatch (%u != %u)", id, expected_id); |
825 |
|
|
|
826 |
|
|
if (type == SSH2_FXP_STATUS) { |
827 |
|
|
u_int status; |
828 |
|
|
|
829 |
|
|
if ((r = sshbuf_get_u32(msg, &status)) != 0) |
830 |
|
|
fatal("%s: buffer error: %s", __func__, ssh_err(r)); |
831 |
|
|
error("Couldn't canonicalize: %s", fx2txt(status)); |
832 |
|
|
sshbuf_free(msg); |
833 |
|
|
return NULL; |
834 |
|
|
} else if (type != SSH2_FXP_NAME) |
835 |
|
|
fatal("Expected SSH2_FXP_NAME(%u) packet, got %u", |
836 |
|
|
SSH2_FXP_NAME, type); |
837 |
|
|
|
838 |
|
|
if ((r = sshbuf_get_u32(msg, &count)) != 0) |
839 |
|
|
fatal("%s: buffer error: %s", __func__, ssh_err(r)); |
840 |
|
|
if (count != 1) |
841 |
|
|
fatal("Got multiple names (%d) from SSH_FXP_REALPATH", count); |
842 |
|
|
|
843 |
|
|
if ((r = sshbuf_get_cstring(msg, &filename, NULL)) != 0 || |
844 |
|
|
(r = sshbuf_get_cstring(msg, &longname, NULL)) != 0 || |
845 |
|
|
(r = decode_attrib(msg, &a)) != 0) |
846 |
|
|
fatal("%s: buffer error: %s", __func__, ssh_err(r)); |
847 |
|
|
|
848 |
|
|
debug3("SSH_FXP_REALPATH %s -> %s size %lu", path, filename, |
849 |
|
|
(unsigned long)a.size); |
850 |
|
|
|
851 |
|
|
free(longname); |
852 |
|
|
|
853 |
|
|
sshbuf_free(msg); |
854 |
|
|
|
855 |
|
|
return(filename); |
856 |
|
|
} |
857 |
|
|
|
858 |
|
|
int |
859 |
|
|
do_rename(struct sftp_conn *conn, const char *oldpath, const char *newpath, |
860 |
|
|
int force_legacy) |
861 |
|
|
{ |
862 |
|
|
struct sshbuf *msg; |
863 |
|
|
u_int status, id; |
864 |
|
|
int r, use_ext = (conn->exts & SFTP_EXT_POSIX_RENAME) && !force_legacy; |
865 |
|
|
|
866 |
|
|
if ((msg = sshbuf_new()) == NULL) |
867 |
|
|
fatal("%s: sshbuf_new failed", __func__); |
868 |
|
|
|
869 |
|
|
/* Send rename request */ |
870 |
|
|
id = conn->msg_id++; |
871 |
|
|
if (use_ext) { |
872 |
|
|
if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 || |
873 |
|
|
(r = sshbuf_put_u32(msg, id)) != 0 || |
874 |
|
|
(r = sshbuf_put_cstring(msg, |
875 |
|
|
"posix-rename@openssh.com")) != 0) |
876 |
|
|
fatal("%s: buffer error: %s", __func__, ssh_err(r)); |
877 |
|
|
} else { |
878 |
|
|
if ((r = sshbuf_put_u8(msg, SSH2_FXP_RENAME)) != 0 || |
879 |
|
|
(r = sshbuf_put_u32(msg, id)) != 0) |
880 |
|
|
fatal("%s: buffer error: %s", __func__, ssh_err(r)); |
881 |
|
|
} |
882 |
|
|
if ((r = sshbuf_put_cstring(msg, oldpath)) != 0 || |
883 |
|
|
(r = sshbuf_put_cstring(msg, newpath)) != 0) |
884 |
|
|
fatal("%s: buffer error: %s", __func__, ssh_err(r)); |
885 |
|
|
send_msg(conn, msg); |
886 |
|
|
debug3("Sent message %s \"%s\" -> \"%s\"", |
887 |
|
|
use_ext ? "posix-rename@openssh.com" : |
888 |
|
|
"SSH2_FXP_RENAME", oldpath, newpath); |
889 |
|
|
sshbuf_free(msg); |
890 |
|
|
|
891 |
|
|
status = get_status(conn, id); |
892 |
|
|
if (status != SSH2_FX_OK) |
893 |
|
|
error("Couldn't rename file \"%s\" to \"%s\": %s", oldpath, |
894 |
|
|
newpath, fx2txt(status)); |
895 |
|
|
|
896 |
|
|
return status == SSH2_FX_OK ? 0 : -1; |
897 |
|
|
} |
898 |
|
|
|
899 |
|
|
int |
900 |
|
|
do_hardlink(struct sftp_conn *conn, const char *oldpath, const char *newpath) |
901 |
|
|
{ |
902 |
|
|
struct sshbuf *msg; |
903 |
|
|
u_int status, id; |
904 |
|
|
int r; |
905 |
|
|
|
906 |
|
|
if ((conn->exts & SFTP_EXT_HARDLINK) == 0) { |
907 |
|
|
error("Server does not support hardlink@openssh.com extension"); |
908 |
|
|
return -1; |
909 |
|
|
} |
910 |
|
|
|
911 |
|
|
if ((msg = sshbuf_new()) == NULL) |
912 |
|
|
fatal("%s: sshbuf_new failed", __func__); |
913 |
|
|
|
914 |
|
|
/* Send link request */ |
915 |
|
|
id = conn->msg_id++; |
916 |
|
|
if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 || |
917 |
|
|
(r = sshbuf_put_u32(msg, id)) != 0 || |
918 |
|
|
(r = sshbuf_put_cstring(msg, "hardlink@openssh.com")) != 0 || |
919 |
|
|
(r = sshbuf_put_cstring(msg, oldpath)) != 0 || |
920 |
|
|
(r = sshbuf_put_cstring(msg, newpath)) != 0) |
921 |
|
|
fatal("%s: buffer error: %s", __func__, ssh_err(r)); |
922 |
|
|
send_msg(conn, msg); |
923 |
|
|
debug3("Sent message hardlink@openssh.com \"%s\" -> \"%s\"", |
924 |
|
|
oldpath, newpath); |
925 |
|
|
sshbuf_free(msg); |
926 |
|
|
|
927 |
|
|
status = get_status(conn, id); |
928 |
|
|
if (status != SSH2_FX_OK) |
929 |
|
|
error("Couldn't link file \"%s\" to \"%s\": %s", oldpath, |
930 |
|
|
newpath, fx2txt(status)); |
931 |
|
|
|
932 |
|
|
return status == SSH2_FX_OK ? 0 : -1; |
933 |
|
|
} |
934 |
|
|
|
935 |
|
|
int |
936 |
|
|
do_symlink(struct sftp_conn *conn, const char *oldpath, const char *newpath) |
937 |
|
|
{ |
938 |
|
|
struct sshbuf *msg; |
939 |
|
|
u_int status, id; |
940 |
|
|
int r; |
941 |
|
|
|
942 |
|
|
if (conn->version < 3) { |
943 |
|
|
error("This server does not support the symlink operation"); |
944 |
|
|
return(SSH2_FX_OP_UNSUPPORTED); |
945 |
|
|
} |
946 |
|
|
|
947 |
|
|
if ((msg = sshbuf_new()) == NULL) |
948 |
|
|
fatal("%s: sshbuf_new failed", __func__); |
949 |
|
|
|
950 |
|
|
/* Send symlink request */ |
951 |
|
|
id = conn->msg_id++; |
952 |
|
|
if ((r = sshbuf_put_u8(msg, SSH2_FXP_SYMLINK)) != 0 || |
953 |
|
|
(r = sshbuf_put_u32(msg, id)) != 0 || |
954 |
|
|
(r = sshbuf_put_cstring(msg, oldpath)) != 0 || |
955 |
|
|
(r = sshbuf_put_cstring(msg, newpath)) != 0) |
956 |
|
|
fatal("%s: buffer error: %s", __func__, ssh_err(r)); |
957 |
|
|
send_msg(conn, msg); |
958 |
|
|
debug3("Sent message SSH2_FXP_SYMLINK \"%s\" -> \"%s\"", oldpath, |
959 |
|
|
newpath); |
960 |
|
|
sshbuf_free(msg); |
961 |
|
|
|
962 |
|
|
status = get_status(conn, id); |
963 |
|
|
if (status != SSH2_FX_OK) |
964 |
|
|
error("Couldn't symlink file \"%s\" to \"%s\": %s", oldpath, |
965 |
|
|
newpath, fx2txt(status)); |
966 |
|
|
|
967 |
|
|
return status == SSH2_FX_OK ? 0 : -1; |
968 |
|
|
} |
969 |
|
|
|
970 |
|
|
int |
971 |
|
|
do_fsync(struct sftp_conn *conn, u_char *handle, u_int handle_len) |
972 |
|
|
{ |
973 |
|
|
struct sshbuf *msg; |
974 |
|
|
u_int status, id; |
975 |
|
|
int r; |
976 |
|
|
|
977 |
|
|
/* Silently return if the extension is not supported */ |
978 |
|
|
if ((conn->exts & SFTP_EXT_FSYNC) == 0) |
979 |
|
|
return -1; |
980 |
|
|
|
981 |
|
|
/* Send fsync request */ |
982 |
|
|
if ((msg = sshbuf_new()) == NULL) |
983 |
|
|
fatal("%s: sshbuf_new failed", __func__); |
984 |
|
|
id = conn->msg_id++; |
985 |
|
|
if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 || |
986 |
|
|
(r = sshbuf_put_u32(msg, id)) != 0 || |
987 |
|
|
(r = sshbuf_put_cstring(msg, "fsync@openssh.com")) != 0 || |
988 |
|
|
(r = sshbuf_put_string(msg, handle, handle_len)) != 0) |
989 |
|
|
fatal("%s: buffer error: %s", __func__, ssh_err(r)); |
990 |
|
|
send_msg(conn, msg); |
991 |
|
|
debug3("Sent message fsync@openssh.com I:%u", id); |
992 |
|
|
sshbuf_free(msg); |
993 |
|
|
|
994 |
|
|
status = get_status(conn, id); |
995 |
|
|
if (status != SSH2_FX_OK) |
996 |
|
|
error("Couldn't sync file: %s", fx2txt(status)); |
997 |
|
|
|
998 |
|
|
return status; |
999 |
|
|
} |
1000 |
|
|
|
1001 |
|
|
#ifdef notyet |
1002 |
|
|
char * |
1003 |
|
|
do_readlink(struct sftp_conn *conn, const char *path) |
1004 |
|
|
{ |
1005 |
|
|
struct sshbuf *msg; |
1006 |
|
|
u_int expected_id, count, id; |
1007 |
|
|
char *filename, *longname; |
1008 |
|
|
Attrib a; |
1009 |
|
|
u_char type; |
1010 |
|
|
int r; |
1011 |
|
|
|
1012 |
|
|
expected_id = id = conn->msg_id++; |
1013 |
|
|
send_string_request(conn, id, SSH2_FXP_READLINK, path, strlen(path)); |
1014 |
|
|
|
1015 |
|
|
if ((msg = sshbuf_new()) == NULL) |
1016 |
|
|
fatal("%s: sshbuf_new failed", __func__); |
1017 |
|
|
|
1018 |
|
|
get_msg(conn, msg); |
1019 |
|
|
if ((r = sshbuf_get_u8(msg, &type)) != 0 || |
1020 |
|
|
(r = sshbuf_get_u32(msg, &id)) != 0) |
1021 |
|
|
fatal("%s: buffer error: %s", __func__, ssh_err(r)); |
1022 |
|
|
|
1023 |
|
|
if (id != expected_id) |
1024 |
|
|
fatal("ID mismatch (%u != %u)", id, expected_id); |
1025 |
|
|
|
1026 |
|
|
if (type == SSH2_FXP_STATUS) { |
1027 |
|
|
u_int status; |
1028 |
|
|
|
1029 |
|
|
if ((r = sshbuf_get_u32(msg, &status)) != 0) |
1030 |
|
|
fatal("%s: buffer error: %s", __func__, ssh_err(r)); |
1031 |
|
|
error("Couldn't readlink: %s", fx2txt(status)); |
1032 |
|
|
sshbuf_free(msg); |
1033 |
|
|
return(NULL); |
1034 |
|
|
} else if (type != SSH2_FXP_NAME) |
1035 |
|
|
fatal("Expected SSH2_FXP_NAME(%u) packet, got %u", |
1036 |
|
|
SSH2_FXP_NAME, type); |
1037 |
|
|
|
1038 |
|
|
if ((r = sshbuf_get_u32(msg, &count)) != 0) |
1039 |
|
|
fatal("%s: buffer error: %s", __func__, ssh_err(r)); |
1040 |
|
|
if (count != 1) |
1041 |
|
|
fatal("Got multiple names (%d) from SSH_FXP_READLINK", count); |
1042 |
|
|
|
1043 |
|
|
if ((r = sshbuf_get_cstring(msg, &filename, NULL)) != 0 || |
1044 |
|
|
(r = sshbuf_get_cstring(msg, &longname, NULL)) != 0 || |
1045 |
|
|
(r = decode_attrib(msg, &a)) != 0) |
1046 |
|
|
fatal("%s: buffer error: %s", __func__, ssh_err(r)); |
1047 |
|
|
|
1048 |
|
|
debug3("SSH_FXP_READLINK %s -> %s", path, filename); |
1049 |
|
|
|
1050 |
|
|
free(longname); |
1051 |
|
|
|
1052 |
|
|
sshbuf_free(msg); |
1053 |
|
|
|
1054 |
|
|
return filename; |
1055 |
|
|
} |
1056 |
|
|
#endif |
1057 |
|
|
|
1058 |
|
|
int |
1059 |
|
|
do_statvfs(struct sftp_conn *conn, const char *path, struct sftp_statvfs *st, |
1060 |
|
|
int quiet) |
1061 |
|
|
{ |
1062 |
|
|
struct sshbuf *msg; |
1063 |
|
|
u_int id; |
1064 |
|
|
int r; |
1065 |
|
|
|
1066 |
|
|
if ((conn->exts & SFTP_EXT_STATVFS) == 0) { |
1067 |
|
|
error("Server does not support statvfs@openssh.com extension"); |
1068 |
|
|
return -1; |
1069 |
|
|
} |
1070 |
|
|
|
1071 |
|
|
id = conn->msg_id++; |
1072 |
|
|
|
1073 |
|
|
if ((msg = sshbuf_new()) == NULL) |
1074 |
|
|
fatal("%s: sshbuf_new failed", __func__); |
1075 |
|
|
sshbuf_reset(msg); |
1076 |
|
|
if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 || |
1077 |
|
|
(r = sshbuf_put_u32(msg, id)) != 0 || |
1078 |
|
|
(r = sshbuf_put_cstring(msg, "statvfs@openssh.com")) != 0 || |
1079 |
|
|
(r = sshbuf_put_cstring(msg, path)) != 0) |
1080 |
|
|
fatal("%s: buffer error: %s", __func__, ssh_err(r)); |
1081 |
|
|
send_msg(conn, msg); |
1082 |
|
|
sshbuf_free(msg); |
1083 |
|
|
|
1084 |
|
|
return get_decode_statvfs(conn, st, id, quiet); |
1085 |
|
|
} |
1086 |
|
|
|
1087 |
|
|
#ifdef notyet |
1088 |
|
|
int |
1089 |
|
|
do_fstatvfs(struct sftp_conn *conn, const u_char *handle, u_int handle_len, |
1090 |
|
|
struct sftp_statvfs *st, int quiet) |
1091 |
|
|
{ |
1092 |
|
|
struct sshbuf *msg; |
1093 |
|
|
u_int id; |
1094 |
|
|
|
1095 |
|
|
if ((conn->exts & SFTP_EXT_FSTATVFS) == 0) { |
1096 |
|
|
error("Server does not support fstatvfs@openssh.com extension"); |
1097 |
|
|
return -1; |
1098 |
|
|
} |
1099 |
|
|
|
1100 |
|
|
id = conn->msg_id++; |
1101 |
|
|
|
1102 |
|
|
if ((msg = sshbuf_new()) == NULL) |
1103 |
|
|
fatal("%s: sshbuf_new failed", __func__); |
1104 |
|
|
sshbuf_reset(msg); |
1105 |
|
|
if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 || |
1106 |
|
|
(r = sshbuf_put_u32(msg, id)) != 0 || |
1107 |
|
|
(r = sshbuf_put_cstring(msg, "fstatvfs@openssh.com")) != 0 || |
1108 |
|
|
(r = sshbuf_put_string(msg, handle, handle_len)) != 0) |
1109 |
|
|
fatal("%s: buffer error: %s", __func__, ssh_err(r)); |
1110 |
|
|
send_msg(conn, msg); |
1111 |
|
|
sshbuf_free(msg); |
1112 |
|
|
|
1113 |
|
|
return get_decode_statvfs(conn, st, id, quiet); |
1114 |
|
|
} |
1115 |
|
|
#endif |
1116 |
|
|
|
1117 |
|
|
static void |
1118 |
|
|
send_read_request(struct sftp_conn *conn, u_int id, u_int64_t offset, |
1119 |
|
|
u_int len, const u_char *handle, u_int handle_len) |
1120 |
|
|
{ |
1121 |
|
|
struct sshbuf *msg; |
1122 |
|
|
int r; |
1123 |
|
|
|
1124 |
|
|
if ((msg = sshbuf_new()) == NULL) |
1125 |
|
|
fatal("%s: sshbuf_new failed", __func__); |
1126 |
|
|
sshbuf_reset(msg); |
1127 |
|
|
if ((r = sshbuf_put_u8(msg, SSH2_FXP_READ)) != 0 || |
1128 |
|
|
(r = sshbuf_put_u32(msg, id)) != 0 || |
1129 |
|
|
(r = sshbuf_put_string(msg, handle, handle_len)) != 0 || |
1130 |
|
|
(r = sshbuf_put_u64(msg, offset)) != 0 || |
1131 |
|
|
(r = sshbuf_put_u32(msg, len)) != 0) |
1132 |
|
|
fatal("%s: buffer error: %s", __func__, ssh_err(r)); |
1133 |
|
|
send_msg(conn, msg); |
1134 |
|
|
sshbuf_free(msg); |
1135 |
|
|
} |
1136 |
|
|
|
1137 |
|
|
int |
1138 |
|
|
do_download(struct sftp_conn *conn, const char *remote_path, |
1139 |
|
|
const char *local_path, Attrib *a, int preserve_flag, int resume_flag, |
1140 |
|
|
int fsync_flag) |
1141 |
|
|
{ |
1142 |
|
|
Attrib junk; |
1143 |
|
|
struct sshbuf *msg; |
1144 |
|
|
u_char *handle; |
1145 |
|
|
int local_fd = -1, write_error; |
1146 |
|
|
int read_error, write_errno, reordered = 0, r; |
1147 |
|
|
u_int64_t offset = 0, size, highwater; |
1148 |
|
|
u_int mode, id, buflen, num_req, max_req, status = SSH2_FX_OK; |
1149 |
|
|
off_t progress_counter; |
1150 |
|
|
size_t handle_len; |
1151 |
|
|
struct stat st; |
1152 |
|
|
struct request { |
1153 |
|
|
u_int id; |
1154 |
|
|
size_t len; |
1155 |
|
|
u_int64_t offset; |
1156 |
|
|
TAILQ_ENTRY(request) tq; |
1157 |
|
|
}; |
1158 |
|
|
TAILQ_HEAD(reqhead, request) requests; |
1159 |
|
|
struct request *req; |
1160 |
|
|
u_char type; |
1161 |
|
|
|
1162 |
|
|
TAILQ_INIT(&requests); |
1163 |
|
|
|
1164 |
|
|
if (a == NULL && (a = do_stat(conn, remote_path, 0)) == NULL) |
1165 |
|
|
return -1; |
1166 |
|
|
|
1167 |
|
|
/* Do not preserve set[ug]id here, as we do not preserve ownership */ |
1168 |
|
|
if (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) |
1169 |
|
|
mode = a->perm & 0777; |
1170 |
|
|
else |
1171 |
|
|
mode = 0666; |
1172 |
|
|
|
1173 |
|
|
if ((a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) && |
1174 |
|
|
(!S_ISREG(a->perm))) { |
1175 |
|
|
error("Cannot download non-regular file: %s", remote_path); |
1176 |
|
|
return(-1); |
1177 |
|
|
} |
1178 |
|
|
|
1179 |
|
|
if (a->flags & SSH2_FILEXFER_ATTR_SIZE) |
1180 |
|
|
size = a->size; |
1181 |
|
|
else |
1182 |
|
|
size = 0; |
1183 |
|
|
|
1184 |
|
|
buflen = conn->transfer_buflen; |
1185 |
|
|
if ((msg = sshbuf_new()) == NULL) |
1186 |
|
|
fatal("%s: sshbuf_new failed", __func__); |
1187 |
|
|
|
1188 |
|
|
attrib_clear(&junk); /* Send empty attributes */ |
1189 |
|
|
|
1190 |
|
|
/* Send open request */ |
1191 |
|
|
id = conn->msg_id++; |
1192 |
|
|
if ((r = sshbuf_put_u8(msg, SSH2_FXP_OPEN)) != 0 || |
1193 |
|
|
(r = sshbuf_put_u32(msg, id)) != 0 || |
1194 |
|
|
(r = sshbuf_put_cstring(msg, remote_path)) != 0 || |
1195 |
|
|
(r = sshbuf_put_u32(msg, SSH2_FXF_READ)) != 0 || |
1196 |
|
|
(r = encode_attrib(msg, &junk)) != 0) |
1197 |
|
|
fatal("%s: buffer error: %s", __func__, ssh_err(r)); |
1198 |
|
|
send_msg(conn, msg); |
1199 |
|
|
debug3("Sent message SSH2_FXP_OPEN I:%u P:%s", id, remote_path); |
1200 |
|
|
|
1201 |
|
|
handle = get_handle(conn, id, &handle_len, |
1202 |
|
|
"remote open(\"%s\")", remote_path); |
1203 |
|
|
if (handle == NULL) { |
1204 |
|
|
sshbuf_free(msg); |
1205 |
|
|
return(-1); |
1206 |
|
|
} |
1207 |
|
|
|
1208 |
|
|
local_fd = open(local_path, |
1209 |
|
|
O_WRONLY | O_CREAT | (resume_flag ? 0 : O_TRUNC), mode | S_IWUSR); |
1210 |
|
|
if (local_fd == -1) { |
1211 |
|
|
error("Couldn't open local file \"%s\" for writing: %s", |
1212 |
|
|
local_path, strerror(errno)); |
1213 |
|
|
goto fail; |
1214 |
|
|
} |
1215 |
|
|
offset = highwater = 0; |
1216 |
|
|
if (resume_flag) { |
1217 |
|
|
if (fstat(local_fd, &st) == -1) { |
1218 |
|
|
error("Unable to stat local file \"%s\": %s", |
1219 |
|
|
local_path, strerror(errno)); |
1220 |
|
|
goto fail; |
1221 |
|
|
} |
1222 |
|
|
if (st.st_size < 0) { |
1223 |
|
|
error("\"%s\" has negative size", local_path); |
1224 |
|
|
goto fail; |
1225 |
|
|
} |
1226 |
|
|
if ((u_int64_t)st.st_size > size) { |
1227 |
|
|
error("Unable to resume download of \"%s\": " |
1228 |
|
|
"local file is larger than remote", local_path); |
1229 |
|
|
fail: |
1230 |
|
|
do_close(conn, handle, handle_len); |
1231 |
|
|
sshbuf_free(msg); |
1232 |
|
|
free(handle); |
1233 |
|
|
if (local_fd != -1) |
1234 |
|
|
close(local_fd); |
1235 |
|
|
return -1; |
1236 |
|
|
} |
1237 |
|
|
offset = highwater = st.st_size; |
1238 |
|
|
} |
1239 |
|
|
|
1240 |
|
|
/* Read from remote and write to local */ |
1241 |
|
|
write_error = read_error = write_errno = num_req = 0; |
1242 |
|
|
max_req = 1; |
1243 |
|
|
progress_counter = offset; |
1244 |
|
|
|
1245 |
|
|
if (showprogress && size != 0) |
1246 |
|
|
start_progress_meter(remote_path, size, &progress_counter); |
1247 |
|
|
|
1248 |
|
|
while (num_req > 0 || max_req > 0) { |
1249 |
|
|
u_char *data; |
1250 |
|
|
size_t len; |
1251 |
|
|
|
1252 |
|
|
/* |
1253 |
|
|
* Simulate EOF on interrupt: stop sending new requests and |
1254 |
|
|
* allow outstanding requests to drain gracefully |
1255 |
|
|
*/ |
1256 |
|
|
if (interrupted) { |
1257 |
|
|
if (num_req == 0) /* If we haven't started yet... */ |
1258 |
|
|
break; |
1259 |
|
|
max_req = 0; |
1260 |
|
|
} |
1261 |
|
|
|
1262 |
|
|
/* Send some more requests */ |
1263 |
|
|
while (num_req < max_req) { |
1264 |
|
|
debug3("Request range %llu -> %llu (%d/%d)", |
1265 |
|
|
(unsigned long long)offset, |
1266 |
|
|
(unsigned long long)offset + buflen - 1, |
1267 |
|
|
num_req, max_req); |
1268 |
|
|
req = xcalloc(1, sizeof(*req)); |
1269 |
|
|
req->id = conn->msg_id++; |
1270 |
|
|
req->len = buflen; |
1271 |
|
|
req->offset = offset; |
1272 |
|
|
offset += buflen; |
1273 |
|
|
num_req++; |
1274 |
|
|
TAILQ_INSERT_TAIL(&requests, req, tq); |
1275 |
|
|
send_read_request(conn, req->id, req->offset, |
1276 |
|
|
req->len, handle, handle_len); |
1277 |
|
|
} |
1278 |
|
|
|
1279 |
|
|
sshbuf_reset(msg); |
1280 |
|
|
get_msg(conn, msg); |
1281 |
|
|
if ((r = sshbuf_get_u8(msg, &type)) != 0 || |
1282 |
|
|
(r = sshbuf_get_u32(msg, &id)) != 0) |
1283 |
|
|
fatal("%s: buffer error: %s", __func__, ssh_err(r)); |
1284 |
|
|
debug3("Received reply T:%u I:%u R:%d", type, id, max_req); |
1285 |
|
|
|
1286 |
|
|
/* Find the request in our queue */ |
1287 |
|
|
for (req = TAILQ_FIRST(&requests); |
1288 |
|
|
req != NULL && req->id != id; |
1289 |
|
|
req = TAILQ_NEXT(req, tq)) |
1290 |
|
|
; |
1291 |
|
|
if (req == NULL) |
1292 |
|
|
fatal("Unexpected reply %u", id); |
1293 |
|
|
|
1294 |
|
|
switch (type) { |
1295 |
|
|
case SSH2_FXP_STATUS: |
1296 |
|
|
if ((r = sshbuf_get_u32(msg, &status)) != 0) |
1297 |
|
|
fatal("%s: buffer error: %s", |
1298 |
|
|
__func__, ssh_err(r)); |
1299 |
|
|
if (status != SSH2_FX_EOF) |
1300 |
|
|
read_error = 1; |
1301 |
|
|
max_req = 0; |
1302 |
|
|
TAILQ_REMOVE(&requests, req, tq); |
1303 |
|
|
free(req); |
1304 |
|
|
num_req--; |
1305 |
|
|
break; |
1306 |
|
|
case SSH2_FXP_DATA: |
1307 |
|
|
if ((r = sshbuf_get_string(msg, &data, &len)) != 0) |
1308 |
|
|
fatal("%s: buffer error: %s", |
1309 |
|
|
__func__, ssh_err(r)); |
1310 |
|
|
debug3("Received data %llu -> %llu", |
1311 |
|
|
(unsigned long long)req->offset, |
1312 |
|
|
(unsigned long long)req->offset + len - 1); |
1313 |
|
|
if (len > req->len) |
1314 |
|
|
fatal("Received more data than asked for " |
1315 |
|
|
"%zu > %zu", len, req->len); |
1316 |
|
|
if ((lseek(local_fd, req->offset, SEEK_SET) == -1 || |
1317 |
|
|
atomicio(vwrite, local_fd, data, len) != len) && |
1318 |
|
|
!write_error) { |
1319 |
|
|
write_errno = errno; |
1320 |
|
|
write_error = 1; |
1321 |
|
|
max_req = 0; |
1322 |
|
|
} |
1323 |
|
|
else if (!reordered && req->offset <= highwater) |
1324 |
|
|
highwater = req->offset + len; |
1325 |
|
|
else if (!reordered && req->offset > highwater) |
1326 |
|
|
reordered = 1; |
1327 |
|
|
progress_counter += len; |
1328 |
|
|
free(data); |
1329 |
|
|
|
1330 |
|
|
if (len == req->len) { |
1331 |
|
|
TAILQ_REMOVE(&requests, req, tq); |
1332 |
|
|
free(req); |
1333 |
|
|
num_req--; |
1334 |
|
|
} else { |
1335 |
|
|
/* Resend the request for the missing data */ |
1336 |
|
|
debug3("Short data block, re-requesting " |
1337 |
|
|
"%llu -> %llu (%2d)", |
1338 |
|
|
(unsigned long long)req->offset + len, |
1339 |
|
|
(unsigned long long)req->offset + |
1340 |
|
|
req->len - 1, num_req); |
1341 |
|
|
req->id = conn->msg_id++; |
1342 |
|
|
req->len -= len; |
1343 |
|
|
req->offset += len; |
1344 |
|
|
send_read_request(conn, req->id, |
1345 |
|
|
req->offset, req->len, handle, handle_len); |
1346 |
|
|
/* Reduce the request size */ |
1347 |
|
|
if (len < buflen) |
1348 |
|
|
buflen = MAXIMUM(MIN_READ_SIZE, len); |
1349 |
|
|
} |
1350 |
|
|
if (max_req > 0) { /* max_req = 0 iff EOF received */ |
1351 |
|
|
if (size > 0 && offset > size) { |
1352 |
|
|
/* Only one request at a time |
1353 |
|
|
* after the expected EOF */ |
1354 |
|
|
debug3("Finish at %llu (%2d)", |
1355 |
|
|
(unsigned long long)offset, |
1356 |
|
|
num_req); |
1357 |
|
|
max_req = 1; |
1358 |
|
|
} else if (max_req <= conn->num_requests) { |
1359 |
|
|
++max_req; |
1360 |
|
|
} |
1361 |
|
|
} |
1362 |
|
|
break; |
1363 |
|
|
default: |
1364 |
|
|
fatal("Expected SSH2_FXP_DATA(%u) packet, got %u", |
1365 |
|
|
SSH2_FXP_DATA, type); |
1366 |
|
|
} |
1367 |
|
|
} |
1368 |
|
|
|
1369 |
|
|
if (showprogress && size) |
1370 |
|
|
stop_progress_meter(); |
1371 |
|
|
|
1372 |
|
|
/* Sanity check */ |
1373 |
|
|
if (TAILQ_FIRST(&requests) != NULL) |
1374 |
|
|
fatal("Transfer complete, but requests still in queue"); |
1375 |
|
|
/* Truncate at highest contiguous point to avoid holes on interrupt */ |
1376 |
|
|
if (read_error || write_error || interrupted) { |
1377 |
|
|
if (reordered && resume_flag) { |
1378 |
|
|
error("Unable to resume download of \"%s\": " |
1379 |
|
|
"server reordered requests", local_path); |
1380 |
|
|
} |
1381 |
|
|
debug("truncating at %llu", (unsigned long long)highwater); |
1382 |
|
|
if (ftruncate(local_fd, highwater) == -1) |
1383 |
|
|
error("ftruncate \"%s\": %s", local_path, |
1384 |
|
|
strerror(errno)); |
1385 |
|
|
} |
1386 |
|
|
if (read_error) { |
1387 |
|
|
error("Couldn't read from remote file \"%s\" : %s", |
1388 |
|
|
remote_path, fx2txt(status)); |
1389 |
|
|
status = -1; |
1390 |
|
|
do_close(conn, handle, handle_len); |
1391 |
|
|
} else if (write_error) { |
1392 |
|
|
error("Couldn't write to \"%s\": %s", local_path, |
1393 |
|
|
strerror(write_errno)); |
1394 |
|
|
status = SSH2_FX_FAILURE; |
1395 |
|
|
do_close(conn, handle, handle_len); |
1396 |
|
|
} else { |
1397 |
|
|
if (do_close(conn, handle, handle_len) != 0 || interrupted) |
1398 |
|
|
status = SSH2_FX_FAILURE; |
1399 |
|
|
else |
1400 |
|
|
status = SSH2_FX_OK; |
1401 |
|
|
/* Override umask and utimes if asked */ |
1402 |
|
|
if (preserve_flag && fchmod(local_fd, mode) == -1) |
1403 |
|
|
error("Couldn't set mode on \"%s\": %s", local_path, |
1404 |
|
|
strerror(errno)); |
1405 |
|
|
if (preserve_flag && |
1406 |
|
|
(a->flags & SSH2_FILEXFER_ATTR_ACMODTIME)) { |
1407 |
|
|
struct timeval tv[2]; |
1408 |
|
|
tv[0].tv_sec = a->atime; |
1409 |
|
|
tv[1].tv_sec = a->mtime; |
1410 |
|
|
tv[0].tv_usec = tv[1].tv_usec = 0; |
1411 |
|
|
if (utimes(local_path, tv) == -1) |
1412 |
|
|
error("Can't set times on \"%s\": %s", |
1413 |
|
|
local_path, strerror(errno)); |
1414 |
|
|
} |
1415 |
|
|
if (fsync_flag) { |
1416 |
|
|
debug("syncing \"%s\"", local_path); |
1417 |
|
|
if (fsync(local_fd) == -1) |
1418 |
|
|
error("Couldn't sync file \"%s\": %s", |
1419 |
|
|
local_path, strerror(errno)); |
1420 |
|
|
} |
1421 |
|
|
} |
1422 |
|
|
close(local_fd); |
1423 |
|
|
sshbuf_free(msg); |
1424 |
|
|
free(handle); |
1425 |
|
|
|
1426 |
|
|
return(status); |
1427 |
|
|
} |
1428 |
|
|
|
1429 |
|
|
static int |
1430 |
|
|
download_dir_internal(struct sftp_conn *conn, const char *src, const char *dst, |
1431 |
|
|
int depth, Attrib *dirattrib, int preserve_flag, int print_flag, |
1432 |
|
|
int resume_flag, int fsync_flag) |
1433 |
|
|
{ |
1434 |
|
|
int i, ret = 0; |
1435 |
|
|
SFTP_DIRENT **dir_entries; |
1436 |
|
|
char *filename, *new_src, *new_dst; |
1437 |
|
|
mode_t mode = 0777; |
1438 |
|
|
|
1439 |
|
|
if (depth >= MAX_DIR_DEPTH) { |
1440 |
|
|
error("Maximum directory depth exceeded: %d levels", depth); |
1441 |
|
|
return -1; |
1442 |
|
|
} |
1443 |
|
|
|
1444 |
|
|
if (dirattrib == NULL && |
1445 |
|
|
(dirattrib = do_stat(conn, src, 1)) == NULL) { |
1446 |
|
|
error("Unable to stat remote directory \"%s\"", src); |
1447 |
|
|
return -1; |
1448 |
|
|
} |
1449 |
|
|
if (!S_ISDIR(dirattrib->perm)) { |
1450 |
|
|
error("\"%s\" is not a directory", src); |
1451 |
|
|
return -1; |
1452 |
|
|
} |
1453 |
|
|
if (print_flag) |
1454 |
|
|
mprintf("Retrieving %s\n", src); |
1455 |
|
|
|
1456 |
|
|
if (dirattrib->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) |
1457 |
|
|
mode = dirattrib->perm & 01777; |
1458 |
|
|
else { |
1459 |
|
|
debug("Server did not send permissions for " |
1460 |
|
|
"directory \"%s\"", dst); |
1461 |
|
|
} |
1462 |
|
|
|
1463 |
|
|
if (mkdir(dst, mode) == -1 && errno != EEXIST) { |
1464 |
|
|
error("mkdir %s: %s", dst, strerror(errno)); |
1465 |
|
|
return -1; |
1466 |
|
|
} |
1467 |
|
|
|
1468 |
|
|
if (do_readdir(conn, src, &dir_entries) == -1) { |
1469 |
|
|
error("%s: Failed to get directory contents", src); |
1470 |
|
|
return -1; |
1471 |
|
|
} |
1472 |
|
|
|
1473 |
|
|
for (i = 0; dir_entries[i] != NULL && !interrupted; i++) { |
1474 |
|
|
filename = dir_entries[i]->filename; |
1475 |
|
|
|
1476 |
|
|
new_dst = path_append(dst, filename); |
1477 |
|
|
new_src = path_append(src, filename); |
1478 |
|
|
|
1479 |
|
|
if (S_ISDIR(dir_entries[i]->a.perm)) { |
1480 |
|
|
if (strcmp(filename, ".") == 0 || |
1481 |
|
|
strcmp(filename, "..") == 0) |
1482 |
|
|
continue; |
1483 |
|
|
if (download_dir_internal(conn, new_src, new_dst, |
1484 |
|
|
depth + 1, &(dir_entries[i]->a), preserve_flag, |
1485 |
|
|
print_flag, resume_flag, fsync_flag) == -1) |
1486 |
|
|
ret = -1; |
1487 |
|
|
} else if (S_ISREG(dir_entries[i]->a.perm) ) { |
1488 |
|
|
if (do_download(conn, new_src, new_dst, |
1489 |
|
|
&(dir_entries[i]->a), preserve_flag, |
1490 |
|
|
resume_flag, fsync_flag) == -1) { |
1491 |
|
|
error("Download of file %s to %s failed", |
1492 |
|
|
new_src, new_dst); |
1493 |
|
|
ret = -1; |
1494 |
|
|
} |
1495 |
|
|
} else |
1496 |
|
|
logit("%s: not a regular file\n", new_src); |
1497 |
|
|
|
1498 |
|
|
free(new_dst); |
1499 |
|
|
free(new_src); |
1500 |
|
|
} |
1501 |
|
|
|
1502 |
|
|
if (preserve_flag) { |
1503 |
|
|
if (dirattrib->flags & SSH2_FILEXFER_ATTR_ACMODTIME) { |
1504 |
|
|
struct timeval tv[2]; |
1505 |
|
|
tv[0].tv_sec = dirattrib->atime; |
1506 |
|
|
tv[1].tv_sec = dirattrib->mtime; |
1507 |
|
|
tv[0].tv_usec = tv[1].tv_usec = 0; |
1508 |
|
|
if (utimes(dst, tv) == -1) |
1509 |
|
|
error("Can't set times on \"%s\": %s", |
1510 |
|
|
dst, strerror(errno)); |
1511 |
|
|
} else |
1512 |
|
|
debug("Server did not send times for directory " |
1513 |
|
|
"\"%s\"", dst); |
1514 |
|
|
} |
1515 |
|
|
|
1516 |
|
|
free_sftp_dirents(dir_entries); |
1517 |
|
|
|
1518 |
|
|
return ret; |
1519 |
|
|
} |
1520 |
|
|
|
1521 |
|
|
int |
1522 |
|
|
download_dir(struct sftp_conn *conn, const char *src, const char *dst, |
1523 |
|
|
Attrib *dirattrib, int preserve_flag, int print_flag, int resume_flag, |
1524 |
|
|
int fsync_flag) |
1525 |
|
|
{ |
1526 |
|
|
char *src_canon; |
1527 |
|
|
int ret; |
1528 |
|
|
|
1529 |
|
|
if ((src_canon = do_realpath(conn, src)) == NULL) { |
1530 |
|
|
error("Unable to canonicalize path \"%s\"", src); |
1531 |
|
|
return -1; |
1532 |
|
|
} |
1533 |
|
|
|
1534 |
|
|
ret = download_dir_internal(conn, src_canon, dst, 0, |
1535 |
|
|
dirattrib, preserve_flag, print_flag, resume_flag, fsync_flag); |
1536 |
|
|
free(src_canon); |
1537 |
|
|
return ret; |
1538 |
|
|
} |
1539 |
|
|
|
1540 |
|
|
int |
1541 |
|
|
do_upload(struct sftp_conn *conn, const char *local_path, |
1542 |
|
|
const char *remote_path, int preserve_flag, int resume, int fsync_flag) |
1543 |
|
|
{ |
1544 |
|
|
int r, local_fd; |
1545 |
|
|
u_int status = SSH2_FX_OK; |
1546 |
|
|
u_int id; |
1547 |
|
|
u_char type; |
1548 |
|
|
off_t offset, progress_counter; |
1549 |
|
|
u_char *handle, *data; |
1550 |
|
|
struct sshbuf *msg; |
1551 |
|
|
struct stat sb; |
1552 |
|
|
Attrib a, *c = NULL; |
1553 |
|
|
u_int32_t startid; |
1554 |
|
|
u_int32_t ackid; |
1555 |
|
|
struct outstanding_ack { |
1556 |
|
|
u_int id; |
1557 |
|
|
u_int len; |
1558 |
|
|
off_t offset; |
1559 |
|
|
TAILQ_ENTRY(outstanding_ack) tq; |
1560 |
|
|
}; |
1561 |
|
|
TAILQ_HEAD(ackhead, outstanding_ack) acks; |
1562 |
|
|
struct outstanding_ack *ack = NULL; |
1563 |
|
|
size_t handle_len; |
1564 |
|
|
|
1565 |
|
|
TAILQ_INIT(&acks); |
1566 |
|
|
|
1567 |
|
|
if ((local_fd = open(local_path, O_RDONLY, 0)) == -1) { |
1568 |
|
|
error("Couldn't open local file \"%s\" for reading: %s", |
1569 |
|
|
local_path, strerror(errno)); |
1570 |
|
|
return(-1); |
1571 |
|
|
} |
1572 |
|
|
if (fstat(local_fd, &sb) == -1) { |
1573 |
|
|
error("Couldn't fstat local file \"%s\": %s", |
1574 |
|
|
local_path, strerror(errno)); |
1575 |
|
|
close(local_fd); |
1576 |
|
|
return(-1); |
1577 |
|
|
} |
1578 |
|
|
if (!S_ISREG(sb.st_mode)) { |
1579 |
|
|
error("%s is not a regular file", local_path); |
1580 |
|
|
close(local_fd); |
1581 |
|
|
return(-1); |
1582 |
|
|
} |
1583 |
|
|
stat_to_attrib(&sb, &a); |
1584 |
|
|
|
1585 |
|
|
a.flags &= ~SSH2_FILEXFER_ATTR_SIZE; |
1586 |
|
|
a.flags &= ~SSH2_FILEXFER_ATTR_UIDGID; |
1587 |
|
|
a.perm &= 0777; |
1588 |
|
|
if (!preserve_flag) |
1589 |
|
|
a.flags &= ~SSH2_FILEXFER_ATTR_ACMODTIME; |
1590 |
|
|
|
1591 |
|
|
if (resume) { |
1592 |
|
|
/* Get remote file size if it exists */ |
1593 |
|
|
if ((c = do_stat(conn, remote_path, 0)) == NULL) { |
1594 |
|
|
close(local_fd); |
1595 |
|
|
return -1; |
1596 |
|
|
} |
1597 |
|
|
|
1598 |
|
|
if ((off_t)c->size >= sb.st_size) { |
1599 |
|
|
error("destination file bigger or same size as " |
1600 |
|
|
"source file"); |
1601 |
|
|
close(local_fd); |
1602 |
|
|
return -1; |
1603 |
|
|
} |
1604 |
|
|
|
1605 |
|
|
if (lseek(local_fd, (off_t)c->size, SEEK_SET) == -1) { |
1606 |
|
|
close(local_fd); |
1607 |
|
|
return -1; |
1608 |
|
|
} |
1609 |
|
|
} |
1610 |
|
|
|
1611 |
|
|
if ((msg = sshbuf_new()) == NULL) |
1612 |
|
|
fatal("%s: sshbuf_new failed", __func__); |
1613 |
|
|
|
1614 |
|
|
/* Send open request */ |
1615 |
|
|
id = conn->msg_id++; |
1616 |
|
|
if ((r = sshbuf_put_u8(msg, SSH2_FXP_OPEN)) != 0 || |
1617 |
|
|
(r = sshbuf_put_u32(msg, id)) != 0 || |
1618 |
|
|
(r = sshbuf_put_cstring(msg, remote_path)) != 0 || |
1619 |
|
|
(r = sshbuf_put_u32(msg, SSH2_FXF_WRITE|SSH2_FXF_CREAT| |
1620 |
|
|
(resume ? SSH2_FXF_APPEND : SSH2_FXF_TRUNC))) != 0 || |
1621 |
|
|
(r = encode_attrib(msg, &a)) != 0) |
1622 |
|
|
fatal("%s: buffer error: %s", __func__, ssh_err(r)); |
1623 |
|
|
send_msg(conn, msg); |
1624 |
|
|
debug3("Sent message SSH2_FXP_OPEN I:%u P:%s", id, remote_path); |
1625 |
|
|
|
1626 |
|
|
sshbuf_reset(msg); |
1627 |
|
|
|
1628 |
|
|
handle = get_handle(conn, id, &handle_len, |
1629 |
|
|
"remote open(\"%s\")", remote_path); |
1630 |
|
|
if (handle == NULL) { |
1631 |
|
|
close(local_fd); |
1632 |
|
|
sshbuf_free(msg); |
1633 |
|
|
return -1; |
1634 |
|
|
} |
1635 |
|
|
|
1636 |
|
|
startid = ackid = id + 1; |
1637 |
|
|
data = xmalloc(conn->transfer_buflen); |
1638 |
|
|
|
1639 |
|
|
/* Read from local and write to remote */ |
1640 |
|
|
offset = progress_counter = (resume ? c->size : 0); |
1641 |
|
|
if (showprogress) |
1642 |
|
|
start_progress_meter(local_path, sb.st_size, |
1643 |
|
|
&progress_counter); |
1644 |
|
|
|
1645 |
|
|
for (;;) { |
1646 |
|
|
int len; |
1647 |
|
|
|
1648 |
|
|
/* |
1649 |
|
|
* Can't use atomicio here because it returns 0 on EOF, |
1650 |
|
|
* thus losing the last block of the file. |
1651 |
|
|
* Simulate an EOF on interrupt, allowing ACKs from the |
1652 |
|
|
* server to drain. |
1653 |
|
|
*/ |
1654 |
|
|
if (interrupted || status != SSH2_FX_OK) |
1655 |
|
|
len = 0; |
1656 |
|
|
else do |
1657 |
|
|
len = read(local_fd, data, conn->transfer_buflen); |
1658 |
|
|
while ((len == -1) && (errno == EINTR || errno == EAGAIN)); |
1659 |
|
|
|
1660 |
|
|
if (len == -1) |
1661 |
|
|
fatal("Couldn't read from \"%s\": %s", local_path, |
1662 |
|
|
strerror(errno)); |
1663 |
|
|
|
1664 |
|
|
if (len != 0) { |
1665 |
|
|
ack = xcalloc(1, sizeof(*ack)); |
1666 |
|
|
ack->id = ++id; |
1667 |
|
|
ack->offset = offset; |
1668 |
|
|
ack->len = len; |
1669 |
|
|
TAILQ_INSERT_TAIL(&acks, ack, tq); |
1670 |
|
|
|
1671 |
|
|
sshbuf_reset(msg); |
1672 |
|
|
if ((r = sshbuf_put_u8(msg, SSH2_FXP_WRITE)) != 0 || |
1673 |
|
|
(r = sshbuf_put_u32(msg, ack->id)) != 0 || |
1674 |
|
|
(r = sshbuf_put_string(msg, handle, |
1675 |
|
|
handle_len)) != 0 || |
1676 |
|
|
(r = sshbuf_put_u64(msg, offset)) != 0 || |
1677 |
|
|
(r = sshbuf_put_string(msg, data, len)) != 0) |
1678 |
|
|
fatal("%s: buffer error: %s", |
1679 |
|
|
__func__, ssh_err(r)); |
1680 |
|
|
send_msg(conn, msg); |
1681 |
|
|
debug3("Sent message SSH2_FXP_WRITE I:%u O:%llu S:%u", |
1682 |
|
|
id, (unsigned long long)offset, len); |
1683 |
|
|
} else if (TAILQ_FIRST(&acks) == NULL) |
1684 |
|
|
break; |
1685 |
|
|
|
1686 |
|
|
if (ack == NULL) |
1687 |
|
|
fatal("Unexpected ACK %u", id); |
1688 |
|
|
|
1689 |
|
|
if (id == startid || len == 0 || |
1690 |
|
|
id - ackid >= conn->num_requests) { |
1691 |
|
|
u_int rid; |
1692 |
|
|
|
1693 |
|
|
sshbuf_reset(msg); |
1694 |
|
|
get_msg(conn, msg); |
1695 |
|
|
if ((r = sshbuf_get_u8(msg, &type)) != 0 || |
1696 |
|
|
(r = sshbuf_get_u32(msg, &rid)) != 0) |
1697 |
|
|
fatal("%s: buffer error: %s", |
1698 |
|
|
__func__, ssh_err(r)); |
1699 |
|
|
|
1700 |
|
|
if (type != SSH2_FXP_STATUS) |
1701 |
|
|
fatal("Expected SSH2_FXP_STATUS(%d) packet, " |
1702 |
|
|
"got %d", SSH2_FXP_STATUS, type); |
1703 |
|
|
|
1704 |
|
|
if ((r = sshbuf_get_u32(msg, &status)) != 0) |
1705 |
|
|
fatal("%s: buffer error: %s", |
1706 |
|
|
__func__, ssh_err(r)); |
1707 |
|
|
debug3("SSH2_FXP_STATUS %u", status); |
1708 |
|
|
|
1709 |
|
|
/* Find the request in our queue */ |
1710 |
|
|
for (ack = TAILQ_FIRST(&acks); |
1711 |
|
|
ack != NULL && ack->id != rid; |
1712 |
|
|
ack = TAILQ_NEXT(ack, tq)) |
1713 |
|
|
; |
1714 |
|
|
if (ack == NULL) |
1715 |
|
|
fatal("Can't find request for ID %u", rid); |
1716 |
|
|
TAILQ_REMOVE(&acks, ack, tq); |
1717 |
|
|
debug3("In write loop, ack for %u %u bytes at %lld", |
1718 |
|
|
ack->id, ack->len, (long long)ack->offset); |
1719 |
|
|
++ackid; |
1720 |
|
|
progress_counter += ack->len; |
1721 |
|
|
free(ack); |
1722 |
|
|
} |
1723 |
|
|
offset += len; |
1724 |
|
|
if (offset < 0) |
1725 |
|
|
fatal("%s: offset < 0", __func__); |
1726 |
|
|
} |
1727 |
|
|
sshbuf_free(msg); |
1728 |
|
|
|
1729 |
|
|
if (showprogress) |
1730 |
|
|
stop_progress_meter(); |
1731 |
|
|
free(data); |
1732 |
|
|
|
1733 |
|
|
if (status != SSH2_FX_OK) { |
1734 |
|
|
error("Couldn't write to remote file \"%s\": %s", |
1735 |
|
|
remote_path, fx2txt(status)); |
1736 |
|
|
status = SSH2_FX_FAILURE; |
1737 |
|
|
} |
1738 |
|
|
|
1739 |
|
|
if (close(local_fd) == -1) { |
1740 |
|
|
error("Couldn't close local file \"%s\": %s", local_path, |
1741 |
|
|
strerror(errno)); |
1742 |
|
|
status = SSH2_FX_FAILURE; |
1743 |
|
|
} |
1744 |
|
|
|
1745 |
|
|
/* Override umask and utimes if asked */ |
1746 |
|
|
if (preserve_flag) |
1747 |
|
|
do_fsetstat(conn, handle, handle_len, &a); |
1748 |
|
|
|
1749 |
|
|
if (fsync_flag) |
1750 |
|
|
(void)do_fsync(conn, handle, handle_len); |
1751 |
|
|
|
1752 |
|
|
if (do_close(conn, handle, handle_len) != 0) |
1753 |
|
|
status = SSH2_FX_FAILURE; |
1754 |
|
|
|
1755 |
|
|
free(handle); |
1756 |
|
|
|
1757 |
|
|
return status == SSH2_FX_OK ? 0 : -1; |
1758 |
|
|
} |
1759 |
|
|
|
1760 |
|
|
static int |
1761 |
|
|
upload_dir_internal(struct sftp_conn *conn, const char *src, const char *dst, |
1762 |
|
|
int depth, int preserve_flag, int print_flag, int resume, int fsync_flag) |
1763 |
|
|
{ |
1764 |
|
|
int ret = 0; |
1765 |
|
|
DIR *dirp; |
1766 |
|
|
struct dirent *dp; |
1767 |
|
|
char *filename, *new_src, *new_dst; |
1768 |
|
|
struct stat sb; |
1769 |
|
|
Attrib a, *dirattrib; |
1770 |
|
|
|
1771 |
|
|
if (depth >= MAX_DIR_DEPTH) { |
1772 |
|
|
error("Maximum directory depth exceeded: %d levels", depth); |
1773 |
|
|
return -1; |
1774 |
|
|
} |
1775 |
|
|
|
1776 |
|
|
if (stat(src, &sb) == -1) { |
1777 |
|
|
error("Couldn't stat directory \"%s\": %s", |
1778 |
|
|
src, strerror(errno)); |
1779 |
|
|
return -1; |
1780 |
|
|
} |
1781 |
|
|
if (!S_ISDIR(sb.st_mode)) { |
1782 |
|
|
error("\"%s\" is not a directory", src); |
1783 |
|
|
return -1; |
1784 |
|
|
} |
1785 |
|
|
if (print_flag) |
1786 |
|
|
mprintf("Entering %s\n", src); |
1787 |
|
|
|
1788 |
|
|
attrib_clear(&a); |
1789 |
|
|
stat_to_attrib(&sb, &a); |
1790 |
|
|
a.flags &= ~SSH2_FILEXFER_ATTR_SIZE; |
1791 |
|
|
a.flags &= ~SSH2_FILEXFER_ATTR_UIDGID; |
1792 |
|
|
a.perm &= 01777; |
1793 |
|
|
if (!preserve_flag) |
1794 |
|
|
a.flags &= ~SSH2_FILEXFER_ATTR_ACMODTIME; |
1795 |
|
|
|
1796 |
|
|
/* |
1797 |
|
|
* sftp lacks a portable status value to match errno EEXIST, |
1798 |
|
|
* so if we get a failure back then we must check whether |
1799 |
|
|
* the path already existed and is a directory. |
1800 |
|
|
*/ |
1801 |
|
|
if (do_mkdir(conn, dst, &a, 0) != 0) { |
1802 |
|
|
if ((dirattrib = do_stat(conn, dst, 0)) == NULL) |
1803 |
|
|
return -1; |
1804 |
|
|
if (!S_ISDIR(dirattrib->perm)) { |
1805 |
|
|
error("\"%s\" exists but is not a directory", dst); |
1806 |
|
|
return -1; |
1807 |
|
|
} |
1808 |
|
|
} |
1809 |
|
|
|
1810 |
|
|
if ((dirp = opendir(src)) == NULL) { |
1811 |
|
|
error("Failed to open dir \"%s\": %s", src, strerror(errno)); |
1812 |
|
|
return -1; |
1813 |
|
|
} |
1814 |
|
|
|
1815 |
|
|
while (((dp = readdir(dirp)) != NULL) && !interrupted) { |
1816 |
|
|
if (dp->d_ino == 0) |
1817 |
|
|
continue; |
1818 |
|
|
filename = dp->d_name; |
1819 |
|
|
new_dst = path_append(dst, filename); |
1820 |
|
|
new_src = path_append(src, filename); |
1821 |
|
|
|
1822 |
|
|
if (lstat(new_src, &sb) == -1) { |
1823 |
|
|
logit("%s: lstat failed: %s", filename, |
1824 |
|
|
strerror(errno)); |
1825 |
|
|
ret = -1; |
1826 |
|
|
} else if (S_ISDIR(sb.st_mode)) { |
1827 |
|
|
if (strcmp(filename, ".") == 0 || |
1828 |
|
|
strcmp(filename, "..") == 0) |
1829 |
|
|
continue; |
1830 |
|
|
|
1831 |
|
|
if (upload_dir_internal(conn, new_src, new_dst, |
1832 |
|
|
depth + 1, preserve_flag, print_flag, resume, |
1833 |
|
|
fsync_flag) == -1) |
1834 |
|
|
ret = -1; |
1835 |
|
|
} else if (S_ISREG(sb.st_mode)) { |
1836 |
|
|
if (do_upload(conn, new_src, new_dst, |
1837 |
|
|
preserve_flag, resume, fsync_flag) == -1) { |
1838 |
|
|
error("Uploading of file %s to %s failed!", |
1839 |
|
|
new_src, new_dst); |
1840 |
|
|
ret = -1; |
1841 |
|
|
} |
1842 |
|
|
} else |
1843 |
|
|
logit("%s: not a regular file\n", filename); |
1844 |
|
|
free(new_dst); |
1845 |
|
|
free(new_src); |
1846 |
|
|
} |
1847 |
|
|
|
1848 |
|
|
do_setstat(conn, dst, &a); |
1849 |
|
|
|
1850 |
|
|
(void) closedir(dirp); |
1851 |
|
|
return ret; |
1852 |
|
|
} |
1853 |
|
|
|
1854 |
|
|
int |
1855 |
|
|
upload_dir(struct sftp_conn *conn, const char *src, const char *dst, |
1856 |
|
|
int preserve_flag, int print_flag, int resume, int fsync_flag) |
1857 |
|
|
{ |
1858 |
|
|
char *dst_canon; |
1859 |
|
|
int ret; |
1860 |
|
|
|
1861 |
|
|
if ((dst_canon = do_realpath(conn, dst)) == NULL) { |
1862 |
|
|
error("Unable to canonicalize path \"%s\"", dst); |
1863 |
|
|
return -1; |
1864 |
|
|
} |
1865 |
|
|
|
1866 |
|
|
ret = upload_dir_internal(conn, src, dst_canon, 0, preserve_flag, |
1867 |
|
|
print_flag, resume, fsync_flag); |
1868 |
|
|
|
1869 |
|
|
free(dst_canon); |
1870 |
|
|
return ret; |
1871 |
|
|
} |
1872 |
|
|
|
1873 |
|
|
char * |
1874 |
|
|
path_append(const char *p1, const char *p2) |
1875 |
|
|
{ |
1876 |
|
|
char *ret; |
1877 |
|
|
size_t len = strlen(p1) + strlen(p2) + 2; |
1878 |
|
|
|
1879 |
|
|
ret = xmalloc(len); |
1880 |
|
|
strlcpy(ret, p1, len); |
1881 |
|
|
if (p1[0] != '\0' && p1[strlen(p1) - 1] != '/') |
1882 |
|
|
strlcat(ret, "/", len); |
1883 |
|
|
strlcat(ret, p2, len); |
1884 |
|
|
|
1885 |
|
|
return(ret); |
1886 |
|
|
} |
1887 |
|
|
|