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- djm@cvs.openbsd.org 2010/09/22 22:58:51 

[atomicio.c atomicio.h misc.c misc.h scp.c sftp-client.c]
     [sftp-client.h sftp.1 sftp.c]
     add an option per-read/write callback to atomicio

     factor out bandwidth limiting code from scp(1) into a generic bandwidth
     limiter that can be attached using the atomicio callback mechanism

     add a bandwidth limit option to sftp(1) using the above
     "very nice" markus@
This commit is contained in:
Damien Miller 2010-09-24 22:15:11 +10:00
parent 7fe2b1fec3
commit 65e42f87fe
10 changed files with 281 additions and 212 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
ChangeLog
View File

@ -44,6 +44,16 @@
ssh_config.5: format the kexalgorithms in a more consistent
(prettier!) way
ok djm
- djm@cvs.openbsd.org 2010/09/22 22:58:51
[atomicio.c atomicio.h misc.c misc.h scp.c sftp-client.c]
[sftp-client.h sftp.1 sftp.c]
add an option per-read/write callback to atomicio
factor out bandwidth limiting code from scp(1) into a generic bandwidth
limiter that can be attached using the atomicio callback mechanism
add a bandwidth limit option to sftp(1) using the above
"very nice" markus@
20100910
- (dtucker) [openbsd-compat/port-linux.c] Check is_selinux_enabled for exact

33
atomicio.c
View File

@ -1,4 +1,4 @@
/* $OpenBSD: atomicio.c,v 1.25 2007/06/25 12:02:27 dtucker Exp $ */
/* $OpenBSD: atomicio.c,v 1.26 2010/09/22 22:58:51 djm Exp $ */
/*
* Copyright (c) 2006 Damien Miller. All rights reserved.
* Copyright (c) 2005 Anil Madhavapeddy. All rights reserved.
@ -48,7 +48,8 @@
* ensure all of data on socket comes through. f==read || f==vwrite
*/
size_t
atomicio(ssize_t (*f) (int, void *, size_t), int fd, void *_s, size_t n)
atomicio6(ssize_t (*f) (int, void *, size_t), int fd, void *_s, size_t n,
int (*cb)(void *, size_t), void *cb_arg)
{
char *s = _s;
size_t pos = 0;
@ -73,17 +74,28 @@ atomicio(ssize_t (*f) (int, void *, size_t), int fd, void *_s, size_t n)
return pos;
default:
pos += (size_t)res;
if (cb != NULL && cb(cb_arg, (size_t)res) == -1) {
errno = EINTR;
return pos;
}
}
}
return (pos);
return pos;
}
size_t
atomicio(ssize_t (*f) (int, void *, size_t), int fd, void *_s, size_t n)
{
return atomicio6(f, fd, _s, n, NULL, NULL);
}
/*
* ensure all of data on socket comes through. f==readv || f==writev
*/
size_t
atomiciov(ssize_t (*f) (int, const struct iovec *, int), int fd,
const struct iovec *_iov, int iovcnt)
atomiciov6(ssize_t (*f) (int, const struct iovec *, int), int fd,
const struct iovec *_iov, int iovcnt,
int (*cb)(void *, size_t), void *cb_arg)
{
size_t pos = 0, rem;
ssize_t res;
@ -137,6 +149,17 @@ atomiciov(ssize_t (*f) (int, const struct iovec *, int), int fd,
iov[0].iov_base = ((char *)iov[0].iov_base) + rem;
iov[0].iov_len -= rem;
}
if (cb != NULL && cb(cb_arg, (size_t)res) == -1) {
errno = EINTR;
return pos;
}
}
return pos;
}
size_t
atomiciov(ssize_t (*f) (int, const struct iovec *, int), int fd,
const struct iovec *_iov, int iovcnt)
{
return atomiciov6(f, fd, _iov, iovcnt, NULL, NULL);
}

8
atomicio.h
View File

@ -1,4 +1,4 @@
/* $OpenBSD: atomicio.h,v 1.10 2006/08/03 03:34:41 deraadt Exp $ */
/* $OpenBSD: atomicio.h,v 1.11 2010/09/22 22:58:51 djm Exp $ */
/*
* Copyright (c) 2006 Damien Miller. All rights reserved.
@ -32,6 +32,9 @@
/*
* Ensure all of data on socket comes through. f==read || f==vwrite
*/
size_t
atomicio6(ssize_t (*f) (int, void *, size_t), int fd, void *_s, size_t n,
int (*cb)(void *, size_t), void *);
size_t atomicio(ssize_t (*)(int, void *, size_t), int, void *, size_t);
#define vwrite (ssize_t (*)(int, void *, size_t))write
@ -39,6 +42,9 @@ size_t atomicio(ssize_t (*)(int, void *, size_t), int, void *, size_t);
/*
* ensure all of data on socket comes through. f==readv || f==writev
*/
size_t
atomiciov6(ssize_t (*f) (int, const struct iovec *, int), int fd,
const struct iovec *_iov, int iovcnt, int (*cb)(void *, size_t), void *);
size_t atomiciov(ssize_t (*)(int, const struct iovec *, int),
int, const struct iovec *, int);

66
misc.c
View File

@ -1,4 +1,4 @@
/* $OpenBSD: misc.c,v 1.80 2010/07/21 02:10:58 djm Exp $ */
/* $OpenBSD: misc.c,v 1.81 2010/09/22 22:58:51 djm Exp $ */
/*
* Copyright (c) 2000 Markus Friedl. All rights reserved.
* Copyright (c) 2005,2006 Damien Miller. All rights reserved.
@ -860,6 +860,70 @@ timingsafe_bcmp(const void *b1, const void *b2, size_t n)
ret |= *p1++ ^ *p2++;
return (ret != 0);
}
void
bandwidth_limit_init(struct bwlimit *bw, u_int64_t kbps, size_t buflen)
{
bw->buflen = buflen;
bw->rate = kbps;
bw->thresh = bw->rate;
bw->lamt = 0;
timerclear(&bw->bwstart);
timerclear(&bw->bwend);
}
/* Callback from read/write loop to insert bandwidth-limiting delays */
void
bandwidth_limit(struct bwlimit *bw, size_t read_len)
{
u_int64_t waitlen;
struct timespec ts, rm;
if (!timerisset(&bw->bwstart)) {
gettimeofday(&bw->bwstart, NULL);
return;
}
bw->lamt += read_len;
if (bw->lamt < bw->thresh)
return;
gettimeofday(&bw->bwend, NULL);
timersub(&bw->bwend, &bw->bwstart, &bw->bwend);
if (!timerisset(&bw->bwend))
return;
bw->lamt *= 8;
waitlen = (double)1000000L * bw->lamt / bw->rate;
bw->bwstart.tv_sec = waitlen / 1000000L;
bw->bwstart.tv_usec = waitlen % 1000000L;
if (timercmp(&bw->bwstart, &bw->bwend, >)) {
timersub(&bw->bwstart, &bw->bwend, &bw->bwend);
/* Adjust the wait time */
if (bw->bwend.tv_sec) {
bw->thresh /= 2;
if (bw->thresh < bw->buflen / 4)
bw->thresh = bw->buflen / 4;
} else if (bw->bwend.tv_usec < 10000) {
bw->thresh *= 2;
if (bw->thresh > bw->buflen * 8)
bw->thresh = bw->buflen * 8;
}
TIMEVAL_TO_TIMESPEC(&bw->bwend, &ts);
while (nanosleep(&ts, &rm) == -1) {
if (errno != EINTR)
break;
ts = rm;
}
}
bw->lamt = 0;
gettimeofday(&bw->bwstart, NULL);
}
void
sock_set_v6only(int s)
{

11
misc.h
View File

@ -1,4 +1,4 @@
/* $OpenBSD: misc.h,v 1.43 2010/07/13 23:13:16 djm Exp $ */
/* $OpenBSD: misc.h,v 1.44 2010/09/22 22:58:51 djm Exp $ */
/*
* Author: Tatu Ylonen <ylo@cs.hut.fi>
@ -80,6 +80,15 @@ void put_u32(void *, u_int32_t)
void put_u16(void *, u_int16_t)
__attribute__((__bounded__( __minbytes__, 1, 2)));
struct bwlimit {
size_t buflen;
u_int64_t rate, thresh, lamt;
struct timeval bwstart, bwend;
};
void bandwidth_limit_init(struct bwlimit *, u_int64_t, size_t);
void bandwidth_limit(struct bwlimit *, size_t);
/* readpass.c */

120
scp.c
View File

@ -1,4 +1,4 @@
/* $OpenBSD: scp.c,v 1.166 2010/07/01 13:06:59 millert Exp $ */
/* $OpenBSD: scp.c,v 1.167 2010/09/22 22:58:51 djm Exp $ */
/*
* scp - secure remote copy. This is basically patched BSD rcp which
* uses ssh to do the data transfer (instead of using rcmd).
@ -120,13 +120,12 @@ extern char *__progname;
int do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout);
void bwlimit(int);
/* Struct for addargs */
arglist args;
/* Bandwidth limit */
off_t limit_rate = 0;
long long limit_kbps = 0;
struct bwlimit bwlimit;
/* Name of current file being transferred. */
char *curfile;
@ -312,15 +311,14 @@ void sink(int, char *[]);
void source(int, char *[]);
void tolocal(int, char *[]);
void toremote(char *, int, char *[]);
size_t scpio(ssize_t (*)(int, void *, size_t), int, void *, size_t, off_t *);
void usage(void);
int
main(int argc, char **argv)
{
int ch, fflag, tflag, status, n;
double speed;
char *targ, *endp, **newargv;
char *targ, **newargv;
const char *errstr;
extern char *optarg;
extern int optind;
@ -369,10 +367,12 @@ main(int argc, char **argv)
addargs(&args, "-oBatchmode yes");
break;
case 'l':
speed = strtod(optarg, &endp);
if (speed <= 0 || *endp != '\0')
limit_kbps = strtonum(optarg, 1, 100 * 1024 * 1024,
&errstr);
if (errstr != NULL)
usage();
limit_rate = speed * 1024;
limit_kbps *= 1024; /* kbps */
bandwidth_limit_init(&bwlimit, limit_kbps, COPY_BUFLEN);
break;
case 'p':
pflag = 1;
@ -474,41 +474,16 @@ main(int argc, char **argv)
exit(errs != 0);
}
/*
* atomicio-like wrapper that also applies bandwidth limits and updates
* the progressmeter counter.
*/
size_t
scpio(ssize_t (*f)(int, void *, size_t), int fd, void *_p, size_t l, off_t *c)
/* Callback from atomicio6 to update progress meter and limit bandwidth */
static int
scpio(void *_cnt, size_t s)
{
u_char *p = (u_char *)_p;
size_t offset;
ssize_t r;
struct pollfd pfd;
off_t *cnt = (off_t *)_cnt;
pfd.fd = fd;
pfd.events = f == read ? POLLIN : POLLOUT;
for (offset = 0; offset < l;) {
r = f(fd, p + offset, l - offset);
if (r == 0) {
errno = EPIPE;
return offset;
}
if (r < 0) {
if (errno == EINTR)
continue;
if (errno == EAGAIN || errno == EWOULDBLOCK) {
(void)poll(&pfd, 1, -1); /* Ignore errors */
continue;
}
return offset;
}
offset += (size_t)r;
*c += (off_t)r;
if (limit_rate)
bwlimit(r);
}
return offset;
*cnt += s;
if (limit_kbps > 0)
bandwidth_limit(&bwlimit, s);
return 0;
}
void
@ -750,7 +725,7 @@ next: if (fd != -1) {
(void)atomicio(vwrite, remout, bp->buf, amt);
continue;
}
if (scpio(vwrite, remout, bp->buf, amt,
if (atomicio6(vwrite, remout, bp->buf, amt, scpio,
&statbytes) != amt)
haderr = errno;
}
@ -824,60 +799,6 @@ rsource(char *name, struct stat *statp)
(void) response();
}
void
bwlimit(int amount)
{
static struct timeval bwstart, bwend;
static int lamt, thresh = 16384;
u_int64_t waitlen;
struct timespec ts, rm;
if (!timerisset(&bwstart)) {
gettimeofday(&bwstart, NULL);
return;
}
lamt += amount;
if (lamt < thresh)
return;
gettimeofday(&bwend, NULL);
timersub(&bwend, &bwstart, &bwend);
if (!timerisset(&bwend))
return;
lamt *= 8;
waitlen = (double)1000000L * lamt / limit_rate;
bwstart.tv_sec = waitlen / 1000000L;
bwstart.tv_usec = waitlen % 1000000L;
if (timercmp(&bwstart, &bwend, >)) {
timersub(&bwstart, &bwend, &bwend);
/* Adjust the wait time */
if (bwend.tv_sec) {
thresh /= 2;
if (thresh < 2048)
thresh = 2048;
} else if (bwend.tv_usec < 10000) {
thresh *= 2;
if (thresh > COPY_BUFLEN * 4)
thresh = COPY_BUFLEN * 4;
}
TIMEVAL_TO_TIMESPEC(&bwend, &ts);
while (nanosleep(&ts, &rm) == -1) {
if (errno != EINTR)
break;
ts = rm;
}
}
lamt = 0;
gettimeofday(&bwstart, NULL);
}
void
sink(int argc, char **argv)
{
@ -1071,7 +992,8 @@ bad: run_err("%s: %s", np, strerror(errno));
amt = size - i;
count += amt;
do {
j = scpio(read, remin, cp, amt, &statbytes);
j = atomicio6(read, remin, cp, amt,
scpio, &statbytes);
if (j == 0) {
run_err("%s", j != EPIPE ?
strerror(errno) :

219
sftp-client.c
View File

@ -1,4 +1,4 @@
/* $OpenBSD: sftp-client.c,v 1.92 2010/07/19 03:16:33 djm Exp $ */
/* $OpenBSD: sftp-client.c,v 1.93 2010/09/22 22:58:51 djm Exp $ */
/*
* Copyright (c) 2001-2004 Damien Miller <djm@openbsd.org>
*
@ -76,14 +76,26 @@ struct sftp_conn {
#define SFTP_EXT_STATVFS 0x00000002
#define SFTP_EXT_FSTATVFS 0x00000004
u_int exts;
u_int64_t limit_kbps;
struct bwlimit bwlimit_in, bwlimit_out;
};
static char *
get_handle(int fd, u_int expected_id, u_int *len, const char *errfmt, ...)
__attribute__((format(printf, 4, 5)));
get_handle(struct sftp_conn *conn, u_int expected_id, u_int *len,
const char *errfmt, ...) __attribute__((format(printf, 4, 5)));
/* ARGSUSED */
static int
sftpio(void *_bwlimit, size_t amount)
{
struct bwlimit *bwlimit = (struct bwlimit *)_bwlimit;
bandwidth_limit(bwlimit, amount);
return 0;
}
static void
send_msg(int fd, Buffer *m)
send_msg(struct sftp_conn *conn, Buffer *m)
{
u_char mlen[4];
struct iovec iov[2];
@ -98,19 +110,22 @@ send_msg(int fd, Buffer *m)
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))
if (atomiciov6(writev, conn->fd_out, iov, 2,
conn->limit_kbps > 0 ? sftpio : NULL, &conn->bwlimit_out) !=
buffer_len(m) + sizeof(mlen))
fatal("Couldn't send packet: %s", strerror(errno));
buffer_clear(m);
}
static void
get_msg(int fd, Buffer *m)
get_msg(struct sftp_conn *conn, Buffer *m)
{
u_int msg_len;
buffer_append_space(m, 4);
if (atomicio(read, fd, buffer_ptr(m), 4) != 4) {
if (atomicio6(read, conn->fd_in, buffer_ptr(m), 4,
conn->limit_kbps > 0 ? sftpio : NULL, &conn->bwlimit_in) != 4) {
if (errno == EPIPE)
fatal("Connection closed");
else
@ -122,7 +137,9 @@ get_msg(int fd, Buffer *m)
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 (atomicio6(read, conn->fd_in, buffer_ptr(m), msg_len,
conn->limit_kbps > 0 ? sftpio : NULL, &conn->bwlimit_in)
!= msg_len) {
if (errno == EPIPE)
fatal("Connection closed");
else
@ -131,7 +148,7 @@ get_msg(int fd, Buffer *m)
}
static void
send_string_request(int fd, u_int id, u_int code, char *s,
send_string_request(struct sftp_conn *conn, u_int id, u_int code, char *s,
u_int len)
{
Buffer msg;
@ -140,14 +157,14 @@ send_string_request(int fd, u_int id, u_int code, char *s,
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);
send_msg(conn, &msg);
debug3("Sent message fd %d T:%u I:%u", conn->fd_out, 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)
send_string_attrs_request(struct sftp_conn *conn, u_int id, u_int code,
char *s, u_int len, Attrib *a)
{
Buffer msg;
@ -156,19 +173,19 @@ send_string_attrs_request(int fd, u_int id, u_int code, char *s,
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);
send_msg(conn, &msg);
debug3("Sent message fd %d T:%u I:%u", conn->fd_out, code, id);
buffer_free(&msg);
}
static u_int
get_status(int fd, u_int expected_id)
get_status(struct sftp_conn *conn, u_int expected_id)
{
Buffer msg;
u_int type, id, status;
buffer_init(&msg);
get_msg(fd, &msg);
get_msg(conn, &msg);
type = buffer_get_char(&msg);
id = buffer_get_int(&msg);
@ -183,11 +200,12 @@ get_status(int fd, u_int expected_id)
debug3("SSH2_FXP_STATUS %u", status);
return(status);
return status;
}
static char *
get_handle(int fd, u_int expected_id, u_int *len, const char *errfmt, ...)
get_handle(struct sftp_conn *conn, u_int expected_id, u_int *len,
const char *errfmt, ...)
{
Buffer msg;
u_int type, id;
@ -201,7 +219,7 @@ get_handle(int fd, u_int expected_id, u_int *len, const char *errfmt, ...)
va_end(args);
buffer_init(&msg);
get_msg(fd, &msg);
get_msg(conn, &msg);
type = buffer_get_char(&msg);
id = buffer_get_int(&msg);
@ -225,14 +243,14 @@ get_handle(int fd, u_int expected_id, u_int *len, const char *errfmt, ...)
}
static Attrib *
get_decode_stat(int fd, u_int expected_id, int quiet)
get_decode_stat(struct sftp_conn *conn, u_int expected_id, int quiet)
{
Buffer msg;
u_int type, id;
Attrib *a;
buffer_init(&msg);
get_msg(fd, &msg);
get_msg(conn, &msg);
type = buffer_get_char(&msg);
id = buffer_get_int(&msg);
@ -260,14 +278,14 @@ get_decode_stat(int fd, u_int expected_id, int quiet)
}
static int
get_decode_statvfs(int fd, struct sftp_statvfs *st, u_int expected_id,
int quiet)
get_decode_statvfs(struct sftp_conn *conn, struct sftp_statvfs *st,
u_int expected_id, int quiet)
{
Buffer msg;
u_int type, id, flag;
buffer_init(&msg);
get_msg(fd, &msg);
get_msg(conn, &msg);
type = buffer_get_char(&msg);
id = buffer_get_int(&msg);
@ -311,21 +329,29 @@ get_decode_statvfs(int fd, struct sftp_statvfs *st, u_int expected_id,
}
struct sftp_conn *
do_init(int fd_in, int fd_out, u_int transfer_buflen, u_int num_requests)
do_init(int fd_in, int fd_out, u_int transfer_buflen, u_int num_requests,
u_int64_t limit_kbps)
{
u_int type, exts = 0;
int version;
u_int type;
Buffer msg;
struct sftp_conn *ret;
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->exts = 0;
ret->limit_kbps = 0;
buffer_init(&msg);
buffer_put_char(&msg, SSH2_FXP_INIT);
buffer_put_int(&msg, SSH2_FILEXFER_VERSION);
send_msg(fd_out, &msg);
send_msg(ret, &msg);
buffer_clear(&msg);
get_msg(fd_in, &msg);
get_msg(ret, &msg);
/* Expecting a VERSION reply */
if ((type = buffer_get_char(&msg)) != SSH2_FXP_VERSION) {
@ -334,9 +360,9 @@ do_init(int fd_in, int fd_out, u_int transfer_buflen, u_int num_requests)
buffer_free(&msg);
return(NULL);
}
version = buffer_get_int(&msg);
ret->version = buffer_get_int(&msg);
debug2("Remote version: %d", version);
debug2("Remote version: %u", ret->version);
/* Check for extensions */
while (buffer_len(&msg) > 0) {
@ -346,15 +372,15 @@ do_init(int fd_in, int fd_out, u_int transfer_buflen, u_int num_requests)
if (strcmp(name, "posix-rename@openssh.com") == 0 &&
strcmp(value, "1") == 0) {
exts |= SFTP_EXT_POSIX_RENAME;
ret->exts |= SFTP_EXT_POSIX_RENAME;
known = 1;
} else if (strcmp(name, "statvfs@openssh.com") == 0 &&
strcmp(value, "2") == 0) {
exts |= SFTP_EXT_STATVFS;
ret->exts |= SFTP_EXT_STATVFS;
known = 1;
} if (strcmp(name, "fstatvfs@openssh.com") == 0 &&
strcmp(value, "2") == 0) {
exts |= SFTP_EXT_FSTATVFS;
ret->exts |= SFTP_EXT_FSTATVFS;
known = 1;
}
if (known) {
@ -369,26 +395,25 @@ do_init(int fd_in, int fd_out, u_int transfer_buflen, u_int num_requests)
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;
ret->exts = exts;
/* Some filexfer v.0 servers don't support large packets */
if (version == 0)
if (ret->version == 0)
ret->transfer_buflen = MIN(ret->transfer_buflen, 20480);
return(ret);
ret->limit_kbps = limit_kbps;
if (ret->limit_kbps > 0) {
bandwidth_limit_init(&ret->bwlimit_in, ret->limit_kbps,
ret->transfer_buflen);
bandwidth_limit_init(&ret->bwlimit_out, ret->limit_kbps,
ret->transfer_buflen);
}
return ret;
}
u_int
sftp_proto_version(struct sftp_conn *conn)
{
return(conn->version);
return conn->version;
}
int
@ -403,16 +428,16 @@ do_close(struct sftp_conn *conn, char *handle, u_int handle_len)
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);
send_msg(conn, &msg);
debug3("Sent message SSH2_FXP_CLOSE I:%u", id);
status = get_status(conn->fd_in, id);
status = get_status(conn, id);
if (status != SSH2_FX_OK)
error("Couldn't close file: %s", fx2txt(status));
buffer_free(&msg);
return(status);
return status;
}
@ -430,14 +455,14 @@ do_lsreaddir(struct sftp_conn *conn, char *path, int printflag,
buffer_put_char(&msg, SSH2_FXP_OPENDIR);
buffer_put_int(&msg, id);
buffer_put_cstring(&msg, path);
send_msg(conn->fd_out, &msg);
send_msg(conn, &msg);
buffer_clear(&msg);
handle = get_handle(conn->fd_in, id, &handle_len,
handle = get_handle(conn, id, &handle_len,
"remote readdir(\"%s\")", path);
if (handle == NULL)
return(-1);
return -1;
if (dir) {
ents = 0;
@ -454,11 +479,11 @@ do_lsreaddir(struct sftp_conn *conn, char *path, int printflag,
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);
send_msg(conn, &msg);
buffer_clear(&msg);
get_msg(conn->fd_in, &msg);
get_msg(conn, &msg);
type = buffer_get_char(&msg);
id = buffer_get_int(&msg);
@ -537,7 +562,7 @@ do_lsreaddir(struct sftp_conn *conn, char *path, int printflag,
**dir = NULL;
}
return(0);
return 0;
}
int
@ -566,9 +591,8 @@ do_rm(struct sftp_conn *conn, char *path)
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);
send_string_request(conn, id, SSH2_FXP_REMOVE, path, strlen(path));
status = get_status(conn, id);
if (status != SSH2_FX_OK)
error("Couldn't delete file: %s", fx2txt(status));
return(status);
@ -580,10 +604,10 @@ do_mkdir(struct sftp_conn *conn, char *path, Attrib *a, int printflag)
u_int status, id;
id = conn->msg_id++;
send_string_attrs_request(conn->fd_out, id, SSH2_FXP_MKDIR, path,
send_string_attrs_request(conn, id, SSH2_FXP_MKDIR, path,
strlen(path), a);
status = get_status(conn->fd_in, id);
status = get_status(conn, id);
if (status != SSH2_FX_OK && printflag)
error("Couldn't create directory: %s", fx2txt(status));
@ -596,10 +620,10 @@ 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,
send_string_request(conn, id, SSH2_FXP_RMDIR, path,
strlen(path));
status = get_status(conn->fd_in, id);
status = get_status(conn, id);
if (status != SSH2_FX_OK)
error("Couldn't remove directory: %s", fx2txt(status));
@ -613,11 +637,11 @@ do_stat(struct sftp_conn *conn, char *path, int quiet)
id = conn->msg_id++;
send_string_request(conn->fd_out, id,
send_string_request(conn, id,
conn->version == 0 ? SSH2_FXP_STAT_VERSION_0 : SSH2_FXP_STAT,
path, strlen(path));
return(get_decode_stat(conn->fd_in, id, quiet));
return(get_decode_stat(conn, id, quiet));
}
Attrib *
@ -634,10 +658,10 @@ do_lstat(struct sftp_conn *conn, char *path, int quiet)
}
id = conn->msg_id++;
send_string_request(conn->fd_out, id, SSH2_FXP_LSTAT, path,
send_string_request(conn, id, SSH2_FXP_LSTAT, path,
strlen(path));
return(get_decode_stat(conn->fd_in, id, quiet));
return(get_decode_stat(conn, id, quiet));
}
#ifdef notyet
@ -647,10 +671,10 @@ 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,
send_string_request(conn, id, SSH2_FXP_FSTAT, handle,
handle_len);
return(get_decode_stat(conn->fd_in, id, quiet));
return(get_decode_stat(conn, id, quiet));
}
#endif
@ -660,10 +684,10 @@ 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,
send_string_attrs_request(conn, id, SSH2_FXP_SETSTAT, path,
strlen(path), a);
status = get_status(conn->fd_in, id);
status = get_status(conn, id);
if (status != SSH2_FX_OK)
error("Couldn't setstat on \"%s\": %s", path,
fx2txt(status));
@ -678,10 +702,10 @@ do_fsetstat(struct sftp_conn *conn, char *handle, u_int handle_len,
u_int status, id;
id = conn->msg_id++;
send_string_attrs_request(conn->fd_out, id, SSH2_FXP_FSETSTAT, handle,
send_string_attrs_request(conn, id, SSH2_FXP_FSETSTAT, handle,
handle_len, a);
status = get_status(conn->fd_in, id);
status = get_status(conn, id);
if (status != SSH2_FX_OK)
error("Couldn't fsetstat: %s", fx2txt(status));
@ -697,12 +721,12 @@ do_realpath(struct sftp_conn *conn, char *path)
Attrib *a;
expected_id = id = conn->msg_id++;
send_string_request(conn->fd_out, id, SSH2_FXP_REALPATH, path,
send_string_request(conn, id, SSH2_FXP_REALPATH, path,
strlen(path));
buffer_init(&msg);
get_msg(conn->fd_in, &msg);
get_msg(conn, &msg);
type = buffer_get_char(&msg);
id = buffer_get_int(&msg);
@ -756,13 +780,13 @@ do_rename(struct sftp_conn *conn, char *oldpath, char *newpath)
}
buffer_put_cstring(&msg, oldpath);
buffer_put_cstring(&msg, newpath);
send_msg(conn->fd_out, &msg);
send_msg(conn, &msg);
debug3("Sent message %s \"%s\" -> \"%s\"",
(conn->exts & SFTP_EXT_POSIX_RENAME) ? "posix-rename@openssh.com" :
"SSH2_FXP_RENAME", oldpath, newpath);
buffer_free(&msg);
status = get_status(conn->fd_in, id);
status = get_status(conn, id);
if (status != SSH2_FX_OK)
error("Couldn't rename file \"%s\" to \"%s\": %s", oldpath,
newpath, fx2txt(status));
@ -789,12 +813,12 @@ do_symlink(struct sftp_conn *conn, char *oldpath, char *newpath)
buffer_put_int(&msg, id);
buffer_put_cstring(&msg, oldpath);
buffer_put_cstring(&msg, newpath);
send_msg(conn->fd_out, &msg);
send_msg(conn, &msg);
debug3("Sent message SSH2_FXP_SYMLINK \"%s\" -> \"%s\"", oldpath,
newpath);
buffer_free(&msg);
status = get_status(conn->fd_in, id);
status = get_status(conn, id);
if (status != SSH2_FX_OK)
error("Couldn't symlink file \"%s\" to \"%s\": %s", oldpath,
newpath, fx2txt(status));
@ -812,12 +836,11 @@ do_readlink(struct sftp_conn *conn, char *path)
Attrib *a;
expected_id = id = conn->msg_id++;
send_string_request(conn->fd_out, id, SSH2_FXP_READLINK, path,
strlen(path));
send_string_request(conn, id, SSH2_FXP_READLINK, path, strlen(path));
buffer_init(&msg);
get_msg(conn->fd_in, &msg);
get_msg(conn, &msg);
type = buffer_get_char(&msg);
id = buffer_get_int(&msg);
@ -871,10 +894,10 @@ do_statvfs(struct sftp_conn *conn, const char *path, struct sftp_statvfs *st,
buffer_put_int(&msg, id);
buffer_put_cstring(&msg, "statvfs@openssh.com");
buffer_put_cstring(&msg, path);
send_msg(conn->fd_out, &msg);
send_msg(conn, &msg);
buffer_free(&msg);
return get_decode_statvfs(conn->fd_in, st, id, quiet);
return get_decode_statvfs(conn, st, id, quiet);
}
#ifdef notyet
@ -898,16 +921,16 @@ do_fstatvfs(struct sftp_conn *conn, const char *handle, u_int handle_len,
buffer_put_int(&msg, id);
buffer_put_cstring(&msg, "fstatvfs@openssh.com");
buffer_put_string(&msg, handle, handle_len);
send_msg(conn->fd_out, &msg);
send_msg(conn, &msg);
buffer_free(&msg);
return get_decode_statvfs(conn->fd_in, st, id, quiet);
return get_decode_statvfs(conn, st, id, quiet);
}
#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)
send_read_request(struct sftp_conn *conn, u_int id, u_int64_t offset,
u_int len, char *handle, u_int handle_len)
{
Buffer msg;
@ -918,7 +941,7 @@ send_read_request(int fd_out, u_int id, u_int64_t offset, u_int len,
buffer_put_string(&msg, handle, handle_len);
buffer_put_int64(&msg, offset);
buffer_put_int(&msg, len);
send_msg(fd_out, &msg);
send_msg(conn, &msg);
buffer_free(&msg);
}
@ -976,10 +999,10 @@ do_download(struct sftp_conn *conn, char *remote_path, char *local_path,
buffer_put_int(&msg, SSH2_FXF_READ);
attrib_clear(&junk); /* Send empty attributes */
encode_attrib(&msg, &junk);
send_msg(conn->fd_out, &msg);
send_msg(conn, &msg);
debug3("Sent message SSH2_FXP_OPEN I:%u P:%s", id, remote_path);
handle = get_handle(conn->fd_in, id, &handle_len,
handle = get_handle(conn, id, &handle_len,
"remote open(\"%s\")", remote_path);
if (handle == NULL) {
buffer_free(&msg);
@ -1032,12 +1055,12 @@ do_download(struct sftp_conn *conn, char *remote_path, char *local_path,
offset += buflen;
num_req++;
TAILQ_INSERT_TAIL(&requests, req, tq);
send_read_request(conn->fd_out, req->id, req->offset,
send_read_request(conn, req->id, req->offset,
req->len, handle, handle_len);
}
buffer_clear(&msg);
get_msg(conn->fd_in, &msg);
get_msg(conn, &msg);
type = buffer_get_char(&msg);
id = buffer_get_int(&msg);
debug3("Received reply T:%u I:%u R:%d", type, id, max_req);
@ -1092,7 +1115,7 @@ do_download(struct sftp_conn *conn, char *remote_path, char *local_path,
req->id = conn->msg_id++;
req->len -= len;
req->offset += len;
send_read_request(conn->fd_out, req->id,
send_read_request(conn, req->id,
req->offset, req->len, handle, handle_len);
/* Reduce the request size */
if (len < buflen)
@ -1327,12 +1350,12 @@ do_upload(struct sftp_conn *conn, char *local_path, char *remote_path,
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);
send_msg(conn, &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,
handle = get_handle(conn, id, &handle_len,
"remote open(\"%s\")", remote_path);
if (handle == NULL) {
close(local_fd);
@ -1381,7 +1404,7 @@ do_upload(struct sftp_conn *conn, char *local_path, char *remote_path,
buffer_put_string(&msg, handle, handle_len);
buffer_put_int64(&msg, offset);
buffer_put_string(&msg, data, len);
send_msg(conn->fd_out, &msg);
send_msg(conn, &msg);
debug3("Sent message SSH2_FXP_WRITE I:%u O:%llu S:%u",
id, (unsigned long long)offset, len);
} else if (TAILQ_FIRST(&acks) == NULL)
@ -1395,7 +1418,7 @@ do_upload(struct sftp_conn *conn, char *local_path, char *remote_path,
u_int r_id;
buffer_clear(&msg);
get_msg(conn->fd_in, &msg);
get_msg(conn, &msg);
type = buffer_get_char(&msg);
r_id = buffer_get_int(&msg);

4
sftp-client.h
View File

@ -1,4 +1,4 @@
/* $OpenBSD: sftp-client.h,v 1.18 2009/08/18 18:36:20 djm Exp $ */
/* $OpenBSD: sftp-client.h,v 1.19 2010/09/22 22:58:51 djm Exp $ */
/*
* Copyright (c) 2001-2004 Damien Miller <djm@openbsd.org>
@ -51,7 +51,7 @@ struct sftp_statvfs {
* Initialise a SSH filexfer connection. Returns NULL on error or
* a pointer to a initialized sftp_conn struct on success.
*/
struct sftp_conn *do_init(int, int, u_int, u_int);
struct sftp_conn *do_init(int, int, u_int, u_int, u_int64_t);
u_int sftp_proto_version(struct sftp_conn *);

7
sftp.1
View File

@ -1,4 +1,4 @@
.\" $OpenBSD: sftp.1,v 1.84 2010/09/19 21:30:05 jmc Exp $
.\" $OpenBSD: sftp.1,v 1.85 2010/09/22 22:58:51 djm Exp $
.\"
.\" Copyright (c) 2001 Damien Miller. All rights reserved.
.\"
@ -22,7 +22,7 @@
.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
.\"
.Dd $Mdocdate: September 19 2010 $
.Dd $Mdocdate: September 22 2010 $
.Dt SFTP 1
.Os
.Sh NAME
@ -38,6 +38,7 @@
.Op Fl D Ar sftp_server_path
.Op Fl F Ar ssh_config
.Op Fl i Ar identity_file
.Op Fl l Ar limit
.Op Fl o Ar ssh_option
.Op Fl P Ar port
.Op Fl R Ar num_requests
@ -159,6 +160,8 @@ Selects the file from which the identity (private key) for public key
authentication is read.
This option is directly passed to
.Xr ssh 1 .
.It Fl l Ar limit
Limits the used bandwidth, specified in Kbit/s.
.It Fl o Ar ssh_option
Can be used to pass options to
.Nm ssh

15
sftp.c
View File

@ -1,4 +1,4 @@
/* $OpenBSD: sftp.c,v 1.125 2010/06/18 00:58:39 djm Exp $ */
/* $OpenBSD: sftp.c,v 1.126 2010/09/22 22:58:51 djm Exp $ */
/*
* Copyright (c) 2001-2004 Damien Miller <djm@openbsd.org>
*
@ -2073,6 +2073,7 @@ main(int argc, char **argv)
int debug_level = 0, sshver = 2;
char *file1 = NULL, *sftp_server = NULL;
char *ssh_program = _PATH_SSH_PROGRAM, *sftp_direct = NULL;
const char *errstr;
LogLevel ll = SYSLOG_LEVEL_INFO;
arglist args;
extern int optind;
@ -2080,6 +2081,7 @@ main(int argc, char **argv)
struct sftp_conn *conn;
size_t copy_buffer_len = DEFAULT_COPY_BUFLEN;
size_t num_requests = DEFAULT_NUM_REQUESTS;
long long limit_kbps = 0;
/* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */
sanitise_stdfd();
@ -2097,7 +2099,7 @@ main(int argc, char **argv)
infile = stdin;
while ((ch = getopt(argc, argv,
"1246hpqrvCc:D:i:o:s:S:b:B:F:P:R:")) != -1) {
"1246hpqrvCc:D:i:l:o:s:S:b:B:F:P:R:")) != -1) {
switch (ch) {
/* Passed through to ssh(1) */
case '4':
@ -2158,6 +2160,13 @@ main(int argc, char **argv)
case 'D':
sftp_direct = optarg;
break;
case 'l':
limit_kbps = strtonum(optarg, 1, 100 * 1024 * 1024,
&errstr);
if (errstr != NULL)
usage();
limit_kbps *= 1024; /* kbps */
break;
case 'r':
global_rflag = 1;
break;
@ -2235,7 +2244,7 @@ main(int argc, char **argv)
}
freeargs(&args);
conn = do_init(in, out, copy_buffer_len, num_requests);
conn = do_init(in, out, copy_buffer_len, num_requests, limit_kbps);
if (conn == NULL)
fatal("Couldn't initialise connection to server");