+/* $OpenBSD: sftp-client.c,v 1.76 2007/01/22 11:32:50 djm Exp $ */
/*
* Copyright (c) 2001-2004 Damien Miller <djm@openbsd.org>
*
/* XXX: copy between two remote sites */
#include "includes.h"
-RCSID("$OpenBSD: sftp-client.c,v 1.46 2004/02/17 05:39:51 djm Exp $");
+#include <sys/types.h>
+#include <sys/param.h>
#include "openbsd-compat/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 "buffer.h"
-#include "bufaux.h"
-#include "getput.h"
#include "xmalloc.h"
+#include "buffer.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 at time */
+/* Minimum amount of data to read at a time */
#define MIN_READ_SIZE 512
-/* Maximum packet size */
-#define MAX_MSG_LENGTH (256 * 1024)
-
struct sftp_conn {
int fd_in;
int fd_out;
send_msg(int fd, Buffer *m)
{
u_char mlen[4];
+ struct iovec iov[2];
- if (buffer_len(m) > MAX_MSG_LENGTH)
+ if (buffer_len(m) > SFTP_MAX_MSG_LENGTH)
fatal("Outbound message too long %u", buffer_len(m));
/* Send length first */
- PUT_32BIT(mlen, buffer_len(m));
- if (atomicio(vwrite, fd, mlen, sizeof(mlen)) <= 0)
- fatal("Couldn't send packet: %s", strerror(errno));
+ 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 (atomicio(vwrite, fd, buffer_ptr(m), buffer_len(m)) <= 0)
+ 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)
{
- ssize_t len;
u_int msg_len;
buffer_append_space(m, 4);
- len = atomicio(read, fd, buffer_ptr(m), 4);
- if (len == 0)
- fatal("Connection closed");
- else if (len == -1)
- fatal("Couldn't read packet: %s", strerror(errno));
+ 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 > MAX_MSG_LENGTH)
+ if (msg_len > SFTP_MAX_MSG_LENGTH)
fatal("Received message too long %u", msg_len);
buffer_append_space(m, msg_len);
- len = atomicio(read, fd, buffer_ptr(m), msg_len);
- if (len == 0)
- fatal("Connection closed");
- else if (len == -1)
- fatal("Read packet: %s", strerror(errno));
+ 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
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",
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",
SFTP_DIRENT ***dir)
{
Buffer msg;
- u_int type, id, handle_len, i, expected_id, ents = 0;
+ u_int count, type, id, handle_len, i, expected_id, ents = 0;
char *handle;
id = conn->msg_id++;
(*dir)[0] = NULL;
}
- for (;;) {
- int count;
-
+ for (; !interrupted;) {
id = expected_id = conn->msg_id++;
debug3("Sending SSH2_FXP_READDIR I:%u", id);
printf("%s\n", longname);
if (dir) {
- *dir = xrealloc(*dir, sizeof(**dir) *
- (ents + 2));
+ *dir = xrealloc(*dir, ents + 2, sizeof(**dir));
(*dir)[ents] = xmalloc(sizeof(***dir));
(*dir)[ents]->filename = xstrdup(filename);
(*dir)[ents]->longname = xstrdup(longname);
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);
}
buffer_init(&msg);
- /* Send rename request */
+ /* Send symlink request */
id = conn->msg_id++;
buffer_put_char(&msg, SSH2_FXP_SYMLINK);
buffer_put_int(&msg, id);
Attrib junk, *a;
Buffer msg;
char *handle;
- int local_fd, status, num_req, max_req, write_error;
+ 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;
+ u_int handle_len, mode, type, id, buflen, num_req, max_req;
off_t progress_counter;
struct request {
u_int id;
max_req = 1;
progress_counter = 0;
- if (showprogress) {
- if (size)
- start_progress_meter(remote_path, size,
- &progress_counter);
- else
- printf("Fetching %s to %s\n", remote_path, local_path);
- }
+ 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)",
debug3("Received reply T:%u I:%u R:%d", type, id, max_req);
/* Find the request in our queue */
- for(req = TAILQ_FIRST(&requests);
+ for (req = TAILQ_FIRST(&requests);
req != NULL && req->id != id;
req = TAILQ_NEXT(req, tq))
;
(unsigned long long)offset,
num_req);
max_req = 1;
- }
- else if (max_req < conn->num_requests + 1) {
+ } else if (max_req <= conn->num_requests) {
++max_req;
}
}
TAILQ_ENTRY(outstanding_ack) tq;
};
TAILQ_HEAD(ackhead, outstanding_ack) acks;
- struct outstanding_ack *ack;
+ struct outstanding_ack *ack = NULL;
TAILQ_INIT(&acks);
offset = 0;
if (showprogress)
start_progress_meter(local_path, sb.st_size, &offset);
- else
- printf("Uploading %s to %s\n", local_path, remote_path);
for (;;) {
int len;
/*
- * Can't use atomicio here because it returns 0 on EOF, thus losing
- * the last block of the file
+ * 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.
*/
- do
+ if (interrupted)
+ len = 0;
+ else do
len = read(local_fd, data, conn->transfer_buflen);
while ((len == -1) && (errno == EINTR || errno == EAGAIN));
debug3("SSH2_FXP_STATUS %d", status);
/* Find the request in our queue */
- for(ack = TAILQ_FIRST(&acks);
+ for (ack = TAILQ_FIRST(&acks);
ack != NULL && ack->id != r_id;
ack = TAILQ_NEXT(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);
+ ack->id, ack->len, (unsigned long long)ack->offset);
++ackid;
xfree(ack);
}
andersk / openssh.git / blobdiff