--- old/usr/src/cmd/ssh/sftp/sftp-client.c	2016-08-16 20:42:04.960088704 -0400
+++ /dev/null	2016-08-16 20:42:04.000000000 -0400
@@ -1,1184 +0,0 @@
-/*
- * Copyright (c) 2001-2004 Damien Miller <djm@openbsd.org>
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
-/* $OpenBSD: sftp-client.c,v 1.76 2007/01/22 11:32:50 djm Exp $ */
-
-/* XXX: memleaks */
-/* XXX: signed vs unsigned */
-/* XXX: remove all logging, only return status codes */
-/* XXX: copy between two remote sites */
-
-#include "includes.h"
-
-#include <sys/types.h>
-#include <sys/param.h>
-#include "sys-queue.h"
-#ifdef HAVE_SYS_STAT_H
-# include <sys/stat.h>
-#endif
-#ifdef HAVE_SYS_TIME_H
-# include <sys/time.h>
-#endif
-#include <sys/uio.h>
-
-#include <errno.h>
-#include <fcntl.h>
-#include <signal.h>
-#include <stdarg.h>
-#include <stdio.h>
-#include <string.h>
-#include <unistd.h>
-
-#include "xmalloc.h"
-#include "buffer.h"
-#include "bufaux.h"
-#include "log.h"
-#include "atomicio.h"
-#include "progressmeter.h"
-#include "misc.h"
-
-#include "sftp.h"
-#include "sftp-common.h"
-#include "sftp-client.h"
-
-extern volatile sig_atomic_t interrupted;
-extern int showprogress;
-
-/* Minimum amount of data to read at a time */
-#define MIN_READ_SIZE	512
-
-struct sftp_conn {
-	int fd_in;
-	int fd_out;
-	u_int transfer_buflen;
-	u_int num_requests;
-	u_int version;
-	u_int msg_id;
-};
-
-static void
-send_msg(int fd, Buffer *m)
-{
-	char mlen[4];
-	struct iovec iov[2];
-
-	if (buffer_len(m) > SFTP_MAX_MSG_LENGTH)
-		fatal("Outbound message too long %u", buffer_len(m));
-
-	/* Send length first */
-	put_u32(mlen, buffer_len(m));
-	iov[0].iov_base = mlen;
-	iov[0].iov_len = sizeof(mlen);
-	iov[1].iov_base = buffer_ptr(m);
-	iov[1].iov_len = buffer_len(m);
-
-	if (atomiciov(writev, fd, iov, 2) != buffer_len(m) + sizeof(mlen))
-		fatal("Couldn't send packet: %s", strerror(errno));
-
-	buffer_clear(m);
-}
-
-static void
-get_msg(int fd, Buffer *m)
-{
-	u_int msg_len;
-
-	buffer_append_space(m, 4);
-	if (atomicio(read, fd, buffer_ptr(m), 4) != 4) {
-		if (errno == EPIPE)
-			fatal("Connection closed");
-		else
-			fatal("Couldn't read packet: %s", strerror(errno));
-	}
-
-	msg_len = buffer_get_int(m);
-	if (msg_len > SFTP_MAX_MSG_LENGTH)
-		fatal("Received message too long %u", msg_len);
-
-	buffer_append_space(m, msg_len);
-	if (atomicio(read, fd, buffer_ptr(m), msg_len) != msg_len) {
-		if (errno == EPIPE)
-			fatal("Connection closed");
-		else
-			fatal("Read packet: %s", strerror(errno));
-	}
-}
-
-static void
-send_string_request(int fd, u_int id, u_int code, char *s,
-    u_int len)
-{
-	Buffer msg;
-
-	buffer_init(&msg);
-	buffer_put_char(&msg, code);
-	buffer_put_int(&msg, id);
-	buffer_put_string(&msg, s, len);
-	send_msg(fd, &msg);
-	debug3("Sent message fd %d T:%u I:%u", fd, code, id);
-	buffer_free(&msg);
-}
-
-static void
-send_string_attrs_request(int fd, u_int id, u_int code, char *s,
-    u_int len, Attrib *a)
-{
-	Buffer msg;
-
-	buffer_init(&msg);
-	buffer_put_char(&msg, code);
-	buffer_put_int(&msg, id);
-	buffer_put_string(&msg, s, len);
-	encode_attrib(&msg, a);
-	send_msg(fd, &msg);
-	debug3("Sent message fd %d T:%u I:%u", fd, code, id);
-	buffer_free(&msg);
-}
-
-static u_int
-get_status(int fd, u_int expected_id)
-{
-	Buffer msg;
-	u_int type, id, status;
-
-	buffer_init(&msg);
-	get_msg(fd, &msg);
-	type = buffer_get_char(&msg);
-	id = buffer_get_int(&msg);
-
-	if (id != expected_id)
-		fatal("ID mismatch (%u != %u)", id, expected_id);
-	if (type != SSH2_FXP_STATUS)
-		fatal("Expected SSH2_FXP_STATUS(%u) packet, got %u",
-		    SSH2_FXP_STATUS, type);
-
-	status = buffer_get_int(&msg);
-	buffer_free(&msg);
-
-	debug3("SSH2_FXP_STATUS %u", status);
-
-	return(status);
-}
-
-static char *
-get_handle(int fd, u_int expected_id, u_int *len)
-{
-	Buffer msg;
-	u_int type, id;
-	char *handle;
-
-	buffer_init(&msg);
-	get_msg(fd, &msg);
-	type = buffer_get_char(&msg);
-	id = buffer_get_int(&msg);
-
-	if (id != expected_id)
-		fatal("ID mismatch (%u != %u)", id, expected_id);
-	if (type == SSH2_FXP_STATUS) {
-		int status = buffer_get_int(&msg);
-
-		error("Couldn't get handle: %s", fx2txt(status));
-		buffer_free(&msg);
-		return(NULL);
-	} else if (type != SSH2_FXP_HANDLE)
-		fatal("Expected SSH2_FXP_HANDLE(%u) packet, got %u",
-		    SSH2_FXP_HANDLE, type);
-
-	handle = buffer_get_string(&msg, len);
-	buffer_free(&msg);
-
-	return(handle);
-}
-
-static Attrib *
-get_decode_stat(int fd, u_int expected_id, int quiet)
-{
-	Buffer msg;
-	u_int type, id;
-	Attrib *a;
-
-	buffer_init(&msg);
-	get_msg(fd, &msg);
-
-	type = buffer_get_char(&msg);
-	id = buffer_get_int(&msg);
-
-	debug3("Received stat reply T:%u I:%u", type, id);
-	if (id != expected_id)
-		fatal("ID mismatch (%u != %u)", id, expected_id);
-	if (type == SSH2_FXP_STATUS) {
-		int status = buffer_get_int(&msg);
-
-		if (quiet)
-			debug("Couldn't stat remote file: %s", fx2txt(status));
-		else
-			error("Couldn't stat remote file: %s", fx2txt(status));
-		buffer_free(&msg);
-		return(NULL);
-	} else if (type != SSH2_FXP_ATTRS) {
-		fatal("Expected SSH2_FXP_ATTRS(%u) packet, got %u",
-		    SSH2_FXP_ATTRS, type);
-	}
-	a = decode_attrib(&msg);
-	buffer_free(&msg);
-
-	return(a);
-}
-
-struct sftp_conn *
-do_init(int fd_in, int fd_out, u_int transfer_buflen, u_int num_requests)
-{
-	u_int type;
-	int version;
-	Buffer msg;
-	struct sftp_conn *ret;
-
-	buffer_init(&msg);
-	buffer_put_char(&msg, SSH2_FXP_INIT);
-	buffer_put_int(&msg, SSH2_FILEXFER_VERSION);
-	send_msg(fd_out, &msg);
-
-	buffer_clear(&msg);
-
-	get_msg(fd_in, &msg);
-
-	/* Expecting a VERSION reply */
-	if ((type = buffer_get_char(&msg)) != SSH2_FXP_VERSION) {
-		error("Invalid packet back from SSH2_FXP_INIT (type %u)",
-		    type);
-		buffer_free(&msg);
-		return(NULL);
-	}
-	version = buffer_get_int(&msg);
-
-	debug2("Remote version: %d", version);
-
-	/* Check for extensions */
-	while (buffer_len(&msg) > 0) {
-		char *name = buffer_get_string(&msg, NULL);
-		char *value = buffer_get_string(&msg, NULL);
-
-		debug2("Init extension: \"%s\"", name);
-		xfree(name);
-		xfree(value);
-	}
-
-	buffer_free(&msg);
-
-	ret = xmalloc(sizeof(*ret));
-	ret->fd_in = fd_in;
-	ret->fd_out = fd_out;
-	ret->transfer_buflen = transfer_buflen;
-	ret->num_requests = num_requests;
-	ret->version = version;
-	ret->msg_id = 1;
-
-	/* Some filexfer v.0 servers don't support large packets */
-	if (version == 0)
-		ret->transfer_buflen = MIN(ret->transfer_buflen, 20480);
-
-	return(ret);
-}
-
-u_int
-sftp_proto_version(struct sftp_conn *conn)
-{
-	return(conn->version);
-}
-
-int
-do_close(struct sftp_conn *conn, char *handle, u_int handle_len)
-{
-	u_int id, status;
-	Buffer msg;
-
-	buffer_init(&msg);
-
-	id = conn->msg_id++;
-	buffer_put_char(&msg, SSH2_FXP_CLOSE);
-	buffer_put_int(&msg, id);
-	buffer_put_string(&msg, handle, handle_len);
-	send_msg(conn->fd_out, &msg);
-	debug3("Sent message SSH2_FXP_CLOSE I:%u", id);
-
-	status = get_status(conn->fd_in, id);
-	if (status != SSH2_FX_OK)
-		error("Couldn't close file: %s", fx2txt(status));
-
-	buffer_free(&msg);
-
-	return(status);
-}
-
-
-static int
-do_lsreaddir(struct sftp_conn *conn, char *path, int printflag,
-    SFTP_DIRENT ***dir)
-{
-	Buffer msg;
-	u_int count, type, id, handle_len, i, expected_id, ents = 0;
-	char *handle;
-
-	id = conn->msg_id++;
-
-	buffer_init(&msg);
-	buffer_put_char(&msg, SSH2_FXP_OPENDIR);
-	buffer_put_int(&msg, id);
-	buffer_put_cstring(&msg, path);
-	send_msg(conn->fd_out, &msg);
-
-	buffer_clear(&msg);
-
-	handle = get_handle(conn->fd_in, id, &handle_len);
-	if (handle == NULL)
-		return(-1);
-
-	if (dir) {
-		ents = 0;
-		*dir = xmalloc(sizeof(**dir));
-		(*dir)[0] = NULL;
-	}
-
-	for (; !interrupted;) {
-		id = expected_id = conn->msg_id++;
-
-		debug3("Sending SSH2_FXP_READDIR I:%u", id);
-
-		buffer_clear(&msg);
-		buffer_put_char(&msg, SSH2_FXP_READDIR);
-		buffer_put_int(&msg, id);
-		buffer_put_string(&msg, handle, handle_len);
-		send_msg(conn->fd_out, &msg);
-
-		buffer_clear(&msg);
-
-		get_msg(conn->fd_in, &msg);
-
-		type = buffer_get_char(&msg);
-		id = buffer_get_int(&msg);
-
-		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) {
-			int status = buffer_get_int(&msg);
-
-			debug3("Received SSH2_FXP_STATUS %d", status);
-
-			if (status == SSH2_FX_EOF) {
-				break;
-			} else {
-				error("Couldn't read directory: %s",
-				    fx2txt(status));
-				do_close(conn, handle, handle_len);
-				xfree(handle);
-				return(status);
-			}
-		} else if (type != SSH2_FXP_NAME)
-			fatal("Expected SSH2_FXP_NAME(%u) packet, got %u",
-			    SSH2_FXP_NAME, type);
-
-		count = buffer_get_int(&msg);
-		if (count == 0)
-			break;
-		debug3("Received %d SSH2_FXP_NAME responses", count);
-		for (i = 0; i < count; i++) {
-			char *filename, *longname;
-			Attrib *a;
-
-			filename = buffer_get_string(&msg, NULL);
-			longname = buffer_get_string(&msg, NULL);
-			a = decode_attrib(&msg);
-
-			if (printflag)
-				printf("%s\n", longname);
-
-			if (dir) {
-				*dir = xrealloc(*dir, (ents + 2) * sizeof(**dir));
-				(*dir)[ents] = xmalloc(sizeof(***dir));
-				(*dir)[ents]->filename = xstrdup(filename);
-				(*dir)[ents]->longname = xstrdup(longname);
-				memcpy(&(*dir)[ents]->a, a, sizeof(*a));
-				(*dir)[++ents] = NULL;
-			}
-
-			xfree(filename);
-			xfree(longname);
-		}
-	}
-
-	buffer_free(&msg);
-	do_close(conn, handle, handle_len);
-	xfree(handle);
-
-	/* Don't return partial matches on interrupt */
-	if (interrupted && dir != NULL && *dir != NULL) {
-		free_sftp_dirents(*dir);
-		*dir = xmalloc(sizeof(**dir));
-		**dir = NULL;
-	}
-
-	return(0);
-}
-
-int
-do_readdir(struct sftp_conn *conn, char *path, SFTP_DIRENT ***dir)
-{
-	return(do_lsreaddir(conn, path, 0, dir));
-}
-
-void free_sftp_dirents(SFTP_DIRENT **s)
-{
-	int i;
-
-	for (i = 0; s[i]; i++) {
-		xfree(s[i]->filename);
-		xfree(s[i]->longname);
-		xfree(s[i]);
-	}
-	xfree(s);
-}
-
-int
-do_rm(struct sftp_conn *conn, char *path)
-{
-	u_int status, id;
-
-	debug2("Sending SSH2_FXP_REMOVE \"%s\"", path);
-
-	id = conn->msg_id++;
-	send_string_request(conn->fd_out, id, SSH2_FXP_REMOVE, path,
-	    strlen(path));
-	status = get_status(conn->fd_in, id);
-	if (status != SSH2_FX_OK)
-		error("Couldn't delete file: %s", fx2txt(status));
-	return(status);
-}
-
-int
-do_mkdir(struct sftp_conn *conn, char *path, Attrib *a)
-{
-	u_int status, id;
-
-	id = conn->msg_id++;
-	send_string_attrs_request(conn->fd_out, id, SSH2_FXP_MKDIR, path,
-	    strlen(path), a);
-
-	status = get_status(conn->fd_in, id);
-	if (status != SSH2_FX_OK)
-		error("Couldn't create directory: %s", fx2txt(status));
-
-	return(status);
-}
-
-int
-do_rmdir(struct sftp_conn *conn, char *path)
-{
-	u_int status, id;
-
-	id = conn->msg_id++;
-	send_string_request(conn->fd_out, id, SSH2_FXP_RMDIR, path,
-	    strlen(path));
-
-	status = get_status(conn->fd_in, id);
-	if (status != SSH2_FX_OK)
-		error("Couldn't remove directory: %s", fx2txt(status));
-
-	return(status);
-}
-
-Attrib *
-do_stat(struct sftp_conn *conn, char *path, int quiet)
-{
-	u_int id;
-
-	id = conn->msg_id++;
-
-	send_string_request(conn->fd_out, id,
-	    conn->version == 0 ? SSH2_FXP_STAT_VERSION_0 : SSH2_FXP_STAT,
-	    path, strlen(path));
-
-	return(get_decode_stat(conn->fd_in, id, quiet));
-}
-
-Attrib *
-do_lstat(struct sftp_conn *conn, char *path, int quiet)
-{
-	u_int id;
-
-	if (conn->version == 0) {
-		if (quiet)
-			debug("Server version does not support lstat operation");
-		else
-			log("Server version does not support lstat operation");
-		return(do_stat(conn, path, quiet));
-	}
-
-	id = conn->msg_id++;
-	send_string_request(conn->fd_out, id, SSH2_FXP_LSTAT, path,
-	    strlen(path));
-
-	return(get_decode_stat(conn->fd_in, id, quiet));
-}
-
-/* this is never used so hush the lint */
-#if 0
-Attrib *
-do_fstat(struct sftp_conn *conn, char *handle, u_int handle_len, int quiet)
-{
-	u_int id;
-
-	id = conn->msg_id++;
-	send_string_request(conn->fd_out, id, SSH2_FXP_FSTAT, handle,
-	    handle_len);
-
-	return(get_decode_stat(conn->fd_in, id, quiet));
-}
-#endif
-
-int
-do_setstat(struct sftp_conn *conn, char *path, Attrib *a)
-{
-	u_int status, id;
-
-	id = conn->msg_id++;
-	send_string_attrs_request(conn->fd_out, id, SSH2_FXP_SETSTAT, path,
-	    strlen(path), a);
-
-	status = get_status(conn->fd_in, id);
-	if (status != SSH2_FX_OK)
-		error("Couldn't setstat on \"%s\": %s", path,
-		    fx2txt(status));
-
-	return(status);
-}
-
-int
-do_fsetstat(struct sftp_conn *conn, char *handle, u_int handle_len,
-    Attrib *a)
-{
-	u_int status, id;
-
-	id = conn->msg_id++;
-	send_string_attrs_request(conn->fd_out, id, SSH2_FXP_FSETSTAT, handle,
-	    handle_len, a);
-
-	status = get_status(conn->fd_in, id);
-	if (status != SSH2_FX_OK)
-		error("Couldn't fsetstat: %s", fx2txt(status));
-
-	return(status);
-}
-
-char *
-do_realpath(struct sftp_conn *conn, char *path)
-{
-	Buffer msg;
-	u_int type, expected_id, count, id;
-	char *filename, *longname;
-	/* LINTED */
-	Attrib *a;
-
-	expected_id = id = conn->msg_id++;
-	send_string_request(conn->fd_out, id, SSH2_FXP_REALPATH, path,
-	    strlen(path));
-
-	buffer_init(&msg);
-
-	get_msg(conn->fd_in, &msg);
-	type = buffer_get_char(&msg);
-	id = buffer_get_int(&msg);
-
-	if (id != expected_id)
-		fatal("ID mismatch (%u != %u)", id, expected_id);
-
-	if (type == SSH2_FXP_STATUS) {
-		u_int status = buffer_get_int(&msg);
-
-		error("Couldn't canonicalise: %s", fx2txt(status));
-		return(NULL);
-	} else if (type != SSH2_FXP_NAME)
-		fatal("Expected SSH2_FXP_NAME(%u) packet, got %u",
-		    SSH2_FXP_NAME, type);
-
-	count = buffer_get_int(&msg);
-	if (count != 1)
-		fatal("Got multiple names (%d) from SSH_FXP_REALPATH", count);
-
-	filename = buffer_get_string(&msg, NULL);
-	longname = buffer_get_string(&msg, NULL);
-	a = decode_attrib(&msg);
-
-	debug3("SSH_FXP_REALPATH %s -> %s", path, filename);
-
-	xfree(longname);
-
-	buffer_free(&msg);
-
-	return(filename);
-}
-
-int
-do_rename(struct sftp_conn *conn, char *oldpath, char *newpath)
-{
-	Buffer msg;
-	u_int status, id;
-
-	buffer_init(&msg);
-
-	/* Send rename request */
-	id = conn->msg_id++;
-	buffer_put_char(&msg, SSH2_FXP_RENAME);
-	buffer_put_int(&msg, id);
-	buffer_put_cstring(&msg, oldpath);
-	buffer_put_cstring(&msg, newpath);
-	send_msg(conn->fd_out, &msg);
-	debug3("Sent message SSH2_FXP_RENAME \"%s\" -> \"%s\"", oldpath,
-	    newpath);
-	buffer_free(&msg);
-
-	status = get_status(conn->fd_in, id);
-	if (status != SSH2_FX_OK)
-		error("Couldn't rename file \"%s\" to \"%s\": %s", oldpath,
-		    newpath, fx2txt(status));
-
-	return(status);
-}
-
-int
-do_symlink(struct sftp_conn *conn, char *oldpath, char *newpath)
-{
-	Buffer msg;
-	u_int status, id;
-
-	if (conn->version < 3) {
-		error("This server does not support the symlink operation");
-		return(SSH2_FX_OP_UNSUPPORTED);
-	}
-
-	buffer_init(&msg);
-
-	/* Send symlink request */
-	id = conn->msg_id++;
-	buffer_put_char(&msg, SSH2_FXP_SYMLINK);
-	buffer_put_int(&msg, id);
-	buffer_put_cstring(&msg, oldpath);
-	buffer_put_cstring(&msg, newpath);
-	send_msg(conn->fd_out, &msg);
-	debug3("Sent message SSH2_FXP_SYMLINK \"%s\" -> \"%s\"", oldpath,
-	    newpath);
-	buffer_free(&msg);
-
-	status = get_status(conn->fd_in, id);
-	if (status != SSH2_FX_OK)
-		error("Couldn't symlink file \"%s\" to \"%s\": %s", oldpath,
-		    newpath, fx2txt(status));
-
-	return(status);
-}
-
-/* this is never used so hush the lint */
-#if 0
-char *
-do_readlink(struct sftp_conn *conn, char *path)
-{
-	Buffer msg;
-	u_int type, expected_id, count, id;
-	char *filename, *longname;
-	Attrib *a;
-
-	expected_id = id = conn->msg_id++;
-	send_string_request(conn->fd_out, id, SSH2_FXP_READLINK, path,
-	    strlen(path));
-
-	buffer_init(&msg);
-
-	get_msg(conn->fd_in, &msg);
-	type = buffer_get_char(&msg);
-	id = buffer_get_int(&msg);
-
-	if (id != expected_id)
-		fatal("ID mismatch (%u != %u)", id, expected_id);
-
-	if (type == SSH2_FXP_STATUS) {
-		u_int status = buffer_get_int(&msg);
-
-		error("Couldn't readlink: %s", fx2txt(status));
-		return(NULL);
-	} else if (type != SSH2_FXP_NAME)
-		fatal("Expected SSH2_FXP_NAME(%u) packet, got %u",
-		    SSH2_FXP_NAME, type);
-
-	count = buffer_get_int(&msg);
-	if (count != 1)
-		fatal("Got multiple names (%d) from SSH_FXP_READLINK", count);
-
-	filename = buffer_get_string(&msg, NULL);
-	longname = buffer_get_string(&msg, NULL);
-	a = decode_attrib(&msg);
-
-	debug3("SSH_FXP_READLINK %s -> %s", path, filename);
-
-	xfree(longname);
-
-	buffer_free(&msg);
-
-	return(filename);
-}
-#endif
-
-static void
-send_read_request(int fd_out, u_int id, u_int64_t offset, u_int len,
-    char *handle, u_int handle_len)
-{
-	Buffer msg;
-
-	buffer_init(&msg);
-	buffer_clear(&msg);
-	buffer_put_char(&msg, SSH2_FXP_READ);
-	buffer_put_int(&msg, id);
-	buffer_put_string(&msg, handle, handle_len);
-	buffer_put_int64(&msg, offset);
-	buffer_put_int(&msg, len);
-	send_msg(fd_out, &msg);
-	buffer_free(&msg);
-}
-
-int
-do_download(struct sftp_conn *conn, char *remote_path, char *local_path,
-    int pflag)
-{
-	Attrib junk, *a;
-	Buffer msg;
-	char *handle;
-	int local_fd, status = 0, write_error;
-	int read_error, write_errno;
-	u_int64_t offset, size;
-	u_int handle_len, mode, type, id, buflen, num_req, max_req;
-	off_t progress_counter;
-	struct request {
-		u_int id;
-		u_int len;
-		u_int64_t offset;
-		TAILQ_ENTRY(request) tq;
-	};
-	TAILQ_HEAD(reqhead, request) requests;
-	struct request *req;
-
-	TAILQ_INIT(&requests);
-
-	a = do_stat(conn, remote_path, 0);
-	if (a == 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->transfer_buflen;
-	buffer_init(&msg);
-
-	/* Send open request */
-	id = conn->msg_id++;
-	buffer_put_char(&msg, SSH2_FXP_OPEN);
-	buffer_put_int(&msg, id);
-	buffer_put_cstring(&msg, remote_path);
-	buffer_put_int(&msg, SSH2_FXF_READ);
-	attrib_clear(&junk); /* Send empty attributes */
-	encode_attrib(&msg, &junk);
-	send_msg(conn->fd_out, &msg);
-	debug3("Sent message SSH2_FXP_OPEN I:%u P:%s", id, remote_path);
-
-	handle = get_handle(conn->fd_in, id, &handle_len);
-	if (handle == NULL) {
-		buffer_free(&msg);
-		return(-1);
-	}
-
-	local_fd = open(local_path, O_WRONLY | O_CREAT | O_TRUNC,
-	    mode | S_IWRITE);
-	if (local_fd == -1) {
-		error("Couldn't open local file \"%s\" for writing: %s",
-		    local_path, strerror(errno));
-		buffer_free(&msg);
-		xfree(handle);
-		return(-1);
-	}
-
-	/* Read from remote and write to local */
-	write_error = read_error = write_errno = num_req = offset = 0;
-	max_req = 1;
-	progress_counter = 0;
-
-	if (showprogress && size != 0)
-		start_progress_meter(remote_path, size, &progress_counter);
-
-	while (num_req > 0 || max_req > 0) {
-		char *data;
-		u_int 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 = xmalloc(sizeof(*req));
-			req->id = conn->msg_id++;
-			req->len = buflen;
-			req->offset = offset;
-			offset += buflen;
-			num_req++;
-			TAILQ_INSERT_TAIL(&requests, req, tq);
-			send_read_request(conn->fd_out, req->id, req->offset,
-			    req->len, handle, handle_len);
-		}
-
-		buffer_clear(&msg);
-		get_msg(conn->fd_in, &msg);
-		type = buffer_get_char(&msg);
-		id = buffer_get_int(&msg);
-		debug3("Received reply T:%u I:%u R:%d", type, id, max_req);
-
-		/* Find the request in our queue */
-		for (req = TAILQ_FIRST(&requests);
-		    req != NULL && req->id != id;
-		    req = TAILQ_NEXT(req, tq))
-			;
-		if (req == NULL)
-			fatal("Unexpected reply %u", id);
-
-		switch (type) {
-		case SSH2_FXP_STATUS:
-			status = buffer_get_int(&msg);
-			if (status != SSH2_FX_EOF)
-				read_error = 1;
-			max_req = 0;
-			TAILQ_REMOVE(&requests, req, tq);
-			xfree(req);
-			num_req--;
-			break;
-		case SSH2_FXP_DATA:
-			data = buffer_get_string(&msg, &len);
-			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 "
-				    "%u > %u", len, req->len);
-			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;
-			}
-			progress_counter += len;
-			xfree(data);
-
-			if (len == req->len) {
-				TAILQ_REMOVE(&requests, req, tq);
-				xfree(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->fd_out, req->id,
-				    req->offset, req->len, handle, handle_len);
-				/* Reduce the request size */
-				if (len < buflen)
-					buflen = MAX(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");
-
-	if (read_error) {
-		error("Couldn't read from remote file \"%s\" : %s",
-		    remote_path, fx2txt(status));
-		do_close(conn, handle, handle_len);
-	} else if (write_error) {
-		error("Couldn't write to \"%s\": %s", local_path,
-		    strerror(write_errno));
-		status = -1;
-		do_close(conn, handle, handle_len);
-	} else {
-		status = do_close(conn, handle, handle_len);
-
-		/* Override umask and utimes if asked */
-#ifdef HAVE_FCHMOD
-		if (pflag && fchmod(local_fd, mode) == -1)
-#else
-		if (pflag && chmod(local_path, mode) == -1)
-#endif /* HAVE_FCHMOD */
-			error("Couldn't set mode on \"%s\": %s", local_path,
-			    strerror(errno));
-		if (pflag && (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));
-		}
-	}
-	close(local_fd);
-	buffer_free(&msg);
-	xfree(handle);
-
-	return(status);
-}
-
-int
-do_upload(struct sftp_conn *conn, char *local_path, char *remote_path,
-    int pflag)
-{
-	int local_fd, status;
-	u_int handle_len, id, type;
-	u_int64_t offset;
-	char *handle, *data;
-	Buffer msg;
-	struct stat sb;
-	Attrib a;
-	u_int32_t startid;
-	u_int32_t ackid;
-	struct outstanding_ack {
-		u_int id;
-		u_int len;
-		u_int64_t offset;
-		TAILQ_ENTRY(outstanding_ack) tq;
-	};
-	TAILQ_HEAD(ackhead, outstanding_ack) acks;
-	struct outstanding_ack *ack = NULL;
-
-	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 (!pflag)
-		a.flags &= ~SSH2_FILEXFER_ATTR_ACMODTIME;
-
-	buffer_init(&msg);
-
-	/* Send open request */
-	id = conn->msg_id++;
-	buffer_put_char(&msg, SSH2_FXP_OPEN);
-	buffer_put_int(&msg, id);
-	buffer_put_cstring(&msg, remote_path);
-	buffer_put_int(&msg, SSH2_FXF_WRITE|SSH2_FXF_CREAT|SSH2_FXF_TRUNC);
-	encode_attrib(&msg, &a);
-	send_msg(conn->fd_out, &msg);
-	debug3("Sent message SSH2_FXP_OPEN I:%u P:%s", id, remote_path);
-
-	buffer_clear(&msg);
-
-	handle = get_handle(conn->fd_in, id, &handle_len);
-	if (handle == NULL) {
-		close(local_fd);
-		buffer_free(&msg);
-		return(-1);
-	}
-
-	startid = ackid = id + 1;
-	data = xmalloc(conn->transfer_buflen);
-
-	/* Read from local and write to remote */
-	offset = 0;
-	if (showprogress)
-		start_progress_meter(local_path, sb.st_size, (off_t *)&offset);
-
-	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)
-			len = 0;
-		else do
-			len = read(local_fd, data, conn->transfer_buflen);
-		while ((len == -1) && (errno == EINTR || errno == EAGAIN));
-
-		if (len == -1)
-			fatal("Couldn't read from \"%s\": %s", local_path,
-			    strerror(errno));
-
-		if (len != 0) {
-			ack = xmalloc(sizeof(*ack));
-			ack->id = ++id;
-			ack->offset = offset;
-			ack->len = len;
-			TAILQ_INSERT_TAIL(&acks, ack, tq);
-
-			buffer_clear(&msg);
-			buffer_put_char(&msg, SSH2_FXP_WRITE);
-			buffer_put_int(&msg, ack->id);
-			buffer_put_string(&msg, handle, handle_len);
-			buffer_put_int64(&msg, offset);
-			buffer_put_string(&msg, data, len);
-			send_msg(conn->fd_out, &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 r_id;
-
-			buffer_clear(&msg);
-			get_msg(conn->fd_in, &msg);
-			type = buffer_get_char(&msg);
-			r_id = buffer_get_int(&msg);
-
-			if (type != SSH2_FXP_STATUS)
-				fatal("Expected SSH2_FXP_STATUS(%d) packet, "
-				    "got %d", SSH2_FXP_STATUS, type);
-
-			status = buffer_get_int(&msg);
-			debug3("SSH2_FXP_STATUS %d", status);
-
-			/* Find the request in our queue */
-			for (ack = TAILQ_FIRST(&acks);
-			    ack != NULL && ack->id != r_id;
-			    ack = TAILQ_NEXT(ack, tq))
-				;
-			if (ack == NULL)
-				fatal("Can't find request for ID %u", r_id);
-			TAILQ_REMOVE(&acks, ack, tq);
-
-			if (status != SSH2_FX_OK) {
-				error("Couldn't write to remote file \"%s\": %s",
-				    remote_path, fx2txt(status));
-				if (showprogress)
-					stop_progress_meter();
-				do_close(conn, handle, handle_len);
-				close(local_fd);
-				xfree(data);
-				xfree(ack);
-				status = -1;
-				goto done;
-			}
-			debug3("In write loop, ack for %u %u bytes at %llu",
-			    ack->id, ack->len, (unsigned long long)ack->offset);
-			++ackid;
-			xfree(ack);
-		}
-		offset += len;
-	}
-	if (showprogress)
-		stop_progress_meter();
-	xfree(data);
-
-	if (close(local_fd) == -1) {
-		error("Couldn't close local file \"%s\": %s", local_path,
-		    strerror(errno));
-		do_close(conn, handle, handle_len);
-		status = -1;
-		goto done;
-	}
-
-	/* Override umask and utimes if asked */
-	if (pflag)
-		do_fsetstat(conn, handle, handle_len, &a);
-
-	status = do_close(conn, handle, handle_len);
-
-done:
-	xfree(handle);
-	buffer_free(&msg);
-	return(status);
-}
