-/* $OpenBSD: scp.c,v 1.160 2007/08/06 19:16:06 sobrado Exp $ */
+/* $OpenBSD: scp.c,v 1.164 2008/10/10 04:55:16 stevesk Exp $ */
/*
* scp - secure remote copy. This is basically patched BSD rcp which
* uses ssh to do the data transfer (instead of using rcmd).
#ifdef HAVE_SYS_STAT_H
# include <sys/stat.h>
#endif
+#ifdef HAVE_POLL_H
+#include <poll.h>
+#else
+# ifdef HAVE_SYS_POLL_H
+# include <sys/poll.h>
+# endif
+#endif
#ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
#endif
extern char *__progname;
+#define COPY_BUFLEN 16384
+
int do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout);
void bwlimit(int);
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
case '4':
case '6':
case 'C':
- addargs(&args, "-%c", ch);
- break;
+ addargs(&args, "-%c", ch);
+ break;
case 'o':
case 'c':
case 'i':
}
/*
* Finally check the exit status of the ssh process, if one was forked
- * and no error has occured yet
+ * and no error has occurred yet
*/
if (do_cmd_pid != -1 && errs == 0) {
if (remin != -1)
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)
+{
+ u_char *p = (u_char *)_p;
+ size_t offset;
+ ssize_t r;
+ struct pollfd pfd;
+
+ 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;
+}
+
void
toremote(char *targ, int argc, char **argv)
{
struct stat stb;
static BUF buffer;
BUF *bp;
- off_t i, amt, statbytes;
- size_t result;
+ off_t i, statbytes;
+ size_t amt;
int fd = -1, haderr, indx;
char *last, *name, buf[16384], encname[MAXPATHLEN];
int len;
syserr: run_err("%s: %s", name, strerror(errno));
goto next;
}
+ if (stb.st_size < 0) {
+ run_err("%s: %s", name, "Negative file size");
+ goto next;
+ }
unset_nonblock(fd);
switch (stb.st_mode & S_IFMT) {
case S_IFREG:
* versions expecting microseconds.
*/
(void) snprintf(buf, sizeof buf, "T%lu 0 %lu 0\n",
- (u_long) stb.st_mtime,
- (u_long) stb.st_atime);
+ (u_long) (stb.st_mtime < 0 ? 0 : stb.st_mtime),
+ (u_long) (stb.st_atime < 0 ? 0 : stb.st_atime));
+ if (verbose_mode) {
+ fprintf(stderr, "File mtime %ld atime %ld\n",
+ (long)stb.st_mtime, (long)stb.st_atime);
+ fprintf(stderr, "Sending file timestamps: %s",
+ buf);
+ }
(void) atomicio(vwrite, remout, buf, strlen(buf));
if (response() < 0)
goto next;
(void) atomicio(vwrite, remout, buf, strlen(buf));
if (response() < 0)
goto next;
- if ((bp = allocbuf(&buffer, fd, sizeof(buf))) == NULL) {
+ if ((bp = allocbuf(&buffer, fd, COPY_BUFLEN)) == NULL) {
next: if (fd != -1) {
(void) close(fd);
fd = -1;
}
if (showprogress)
start_progress_meter(curfile, stb.st_size, &statbytes);
- /* Keep writing after an error so that we stay sync'd up. */
+ set_nonblock(remout);
for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
amt = bp->cnt;
- if (i + amt > stb.st_size)
+ if (i + (off_t)amt > stb.st_size)
amt = stb.st_size - i;
if (!haderr) {
- result = atomicio(read, fd, bp->buf, amt);
- if (result != amt)
+ if (atomicio(read, fd, bp->buf, amt) != amt)
haderr = errno;
}
- if (haderr)
- (void) atomicio(vwrite, remout, bp->buf, amt);
- else {
- result = atomicio(vwrite, remout, bp->buf, amt);
- if (result != amt)
- haderr = errno;
- statbytes += result;
+ /* Keep writing after error to retain sync */
+ if (haderr) {
+ (void)atomicio(vwrite, remout, bp->buf, amt);
+ continue;
}
- if (limit_rate)
- bwlimit(amt);
+ if (scpio(vwrite, remout, bp->buf, amt,
+ &statbytes) != amt)
+ haderr = errno;
}
+ unset_nonblock(remout);
if (showprogress)
stop_progress_meter();
thresh /= 2;
if (thresh < 2048)
thresh = 2048;
- } else if (bwend.tv_usec < 100) {
+ } else if (bwend.tv_usec < 10000) {
thresh *= 2;
- if (thresh > 32768)
- thresh = 32768;
+ if (thresh > COPY_BUFLEN * 4)
+ thresh = COPY_BUFLEN * 4;
}
TIMEVAL_TO_TIMESPEC(&bwend, &ts);
continue;
}
(void) atomicio(vwrite, remout, "", 1);
- if ((bp = allocbuf(&buffer, ofd, sizeof(buf))) == NULL) {
+ if ((bp = allocbuf(&buffer, ofd, COPY_BUFLEN)) == NULL) {
(void) close(ofd);
continue;
}
statbytes = 0;
if (showprogress)
start_progress_meter(curfile, size, &statbytes);
- for (count = i = 0; i < size; i += sizeof(buf)) {
- amt = sizeof(buf);
+ set_nonblock(remin);
+ for (count = i = 0; i < size; i += bp->cnt) {
+ amt = bp->cnt;
if (i + amt > size)
amt = size - i;
count += amt;
do {
- j = atomicio(read, remin, cp, amt);
+ j = scpio(read, remin, cp, amt, &statbytes);
if (j == 0) {
- run_err("%s", j ? strerror(errno) :
+ run_err("%s", j != EPIPE ?
+ strerror(errno) :
"dropped connection");
exit(1);
}
amt -= j;
cp += j;
- statbytes += j;
} while (amt > 0);
- if (limit_rate)
- bwlimit(sizeof(buf));
-
if (count == bp->cnt) {
/* Keep reading so we stay sync'd up. */
if (wrerr == NO) {
cp = bp->buf;
}
}
+ unset_nonblock(remin);
if (showprogress)
stop_progress_meter();
if (count != 0 && wrerr == NO &&
andersk / gssapi-openssh.git / blobdiff