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upstream: when scp(1) is using the SFTP protocol for transport (the 

default), better match scp/rcp's handling of globs that don't match the
globbed characters but do match literally (e.g. trying to transfer
"foo.[1]").

Previously scp(1) in SFTP mode would not match these pathnames but
legacy scp/rcp mode would.

Reported by Michael Yagliyan in bz3488; ok dtucker@

OpenBSD-Commit-ID: d8a3773f53015ba811fddba7473769a2fd343e11
This commit is contained in:
djm@openbsd.org 2022-10-24 21:51:55 +00:00 committed by Damien Miller
parent 18376847b8
commit a4821a5924
No known key found for this signature in database
2 changed files with 67 additions and 6 deletions
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39
scp.c
View File

@ -1,4 +1,4 @@
/* $OpenBSD: scp.c,v 1.248 2022/05/13 06:31:50 djm Exp $ */
/* $OpenBSD: scp.c,v 1.249 2022/10/24 21:51:55 djm Exp $ */
/*
* scp - secure remote copy. This is basically patched BSD rcp which
* uses ssh to do the data transfer (instead of using rcmd).
@ -1505,7 +1505,8 @@ sink_sftp(int argc, char *dst, const char *src, struct sftp_conn *conn)
}
debug3_f("copying remote %s to local %s", abs_src, dst);
if ((r = remote_glob(conn, abs_src, GLOB_MARK, NULL, &g)) != 0) {
if ((r = remote_glob(conn, abs_src, GLOB_NOCHECK|GLOB_MARK,
NULL, &g)) != 0) {
if (r == GLOB_NOSPACE)
error("%s: too many glob matches", src);
else
@ -1514,6 +1515,20 @@ sink_sftp(int argc, char *dst, const char *src, struct sftp_conn *conn)
goto out;
}
/* Did we actually get any matches back from the glob? */
if (g.gl_matchc == 0 && g.gl_pathc == 1 && g.gl_pathv[0] != 0) {
/*
* If nothing matched but a path returned, then it's probably
* a GLOB_NOCHECK result. Check whether the unglobbed path
* exists so we can give a nice error message early.
*/
if (do_stat(conn, g.gl_pathv[0], 1) == NULL) {
error("%s: %s", src, strerror(ENOENT));
err = -1;
goto out;
}
}
if ((r = stat(dst, &st)) != 0)
debug2_f("stat local \"%s\": %s", dst, strerror(errno));
dst_is_dir = r == 0 && S_ISDIR(st.st_mode);
@ -1731,7 +1746,8 @@ sink(int argc, char **argv, const char *src)
}
if (npatterns > 0) {
for (n = 0; n < npatterns; n++) {
if (fnmatch(patterns[n], cp, 0) == 0)
if (strcmp(patterns[n], cp) == 0 ||
fnmatch(patterns[n], cp, 0) == 0)
break;
}
if (n >= npatterns)
@ -1922,7 +1938,8 @@ throughlocal_sftp(struct sftp_conn *from, struct sftp_conn *to,
}
debug3_f("copying remote %s to remote %s", abs_src, target);
if ((r = remote_glob(from, abs_src, GLOB_MARK, NULL, &g)) != 0) {
if ((r = remote_glob(from, abs_src, GLOB_NOCHECK|GLOB_MARK,
NULL, &g)) != 0) {
if (r == GLOB_NOSPACE)
error("%s: too many glob matches", src);
else
@ -1931,6 +1948,20 @@ throughlocal_sftp(struct sftp_conn *from, struct sftp_conn *to,
goto out;
}
/* Did we actually get any matches back from the glob? */
if (g.gl_matchc == 0 && g.gl_pathc == 1 && g.gl_pathv[0] != 0) {
/*
* If nothing matched but a path returned, then it's probably
* a GLOB_NOCHECK result. Check whether the unglobbed path
* exists so we can give a nice error message early.
*/
if (do_stat(from, g.gl_pathv[0], 1) == NULL) {
error("%s: %s", src, strerror(ENOENT));
err = -1;
goto out;
}
}
for (i = 0; g.gl_pathv[i] && !interrupted; i++) {
tmp = xstrdup(g.gl_pathv[i]);
if ((filename = basename(tmp)) == NULL) {

34
sftp-glob.c
View File

@ -1,4 +1,4 @@
/* $OpenBSD: sftp-glob.c,v 1.30 2022/02/25 09:46:24 dtucker Exp $ */
/* $OpenBSD: sftp-glob.c,v 1.31 2022/10/24 21:51:55 djm Exp $ */
/*
* Copyright (c) 2001-2004 Damien Miller <djm@openbsd.org>
*
@ -137,6 +137,11 @@ int
remote_glob(struct sftp_conn *conn, const char *pattern, int flags,
int (*errfunc)(const char *, int), glob_t *pglob)
{
int r;
size_t l;
char *s;
struct stat sb;
pglob->gl_opendir = fudge_opendir;
pglob->gl_readdir = (struct dirent *(*)(void *))fudge_readdir;
pglob->gl_closedir = (void (*)(void *))fudge_closedir;
@ -146,5 +151,30 @@ remote_glob(struct sftp_conn *conn, const char *pattern, int flags,
memset(&cur, 0, sizeof(cur));
cur.conn = conn;
return(glob(pattern, flags | GLOB_ALTDIRFUNC, errfunc, pglob));
if ((r = glob(pattern, flags | GLOB_ALTDIRFUNC, errfunc, pglob)) != 0)
return r;
/*
* When both GLOB_NOCHECK and GLOB_MARK are active, a single gl_pathv
* entry has been returned and that entry has not already been marked,
* then check whether it needs a '/' appended as a directory mark.
*
* This ensures that a NOCHECK result is annotated as a directory.
* The glob(3) spec doesn't promise to mark NOCHECK entries, but doing
* it simplifies our callers (sftp/scp) considerably.
*
* XXX doesn't try to handle gl_offs.
*/
if ((flags & (GLOB_NOCHECK|GLOB_MARK)) == (GLOB_NOCHECK|GLOB_MARK) &&
pglob->gl_matchc == 0 && pglob->gl_offs == 0 &&
pglob->gl_pathc == 1 && (s = pglob->gl_pathv[0]) != NULL &&
(l = strlen(s)) > 0 && s[l-1] != '/') {
if (fudge_stat(s, &sb) == 0 && S_ISDIR(sb.st_mode)) {
/* NOCHECK on a directory; annotate */
if ((s = realloc(s, l + 2)) != NULL) {
memcpy(s + l, "/", 2);
pglob->gl_pathv[0] = s;
}
}
}
return 0;
}