sftp-glob.c revision 106121 
1/*
2 * Copyright (c) 2001,2002 Damien Miller.  All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
14 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
15 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
16 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
17 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
18 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
19 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
20 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23 */
24
25#include "includes.h"
26RCSID("$OpenBSD: sftp-glob.c,v 1.13 2002/09/11 22:41:50 djm Exp $");
27
28#include "buffer.h"
29#include "bufaux.h"
30#include "xmalloc.h"
31#include "log.h"
32
33#include "sftp.h"
34#include "sftp-common.h"
35#include "sftp-client.h"
36#include "sftp-glob.h"
37
38struct SFTP_OPENDIR {
39	SFTP_DIRENT **dir;
40	int offset;
41};
42
43static struct {
44	struct sftp_conn *conn;
45} cur;
46
47static void *
48fudge_opendir(const char *path)
49{
50	struct SFTP_OPENDIR *r;
51
52	r = xmalloc(sizeof(*r));
53
54	if (do_readdir(cur.conn, (char *)path, &r->dir)) {
55		xfree(r);
56		return(NULL);
57	}
58
59	r->offset = 0;
60
61	return((void *)r);
62}
63
64static struct dirent *
65fudge_readdir(struct SFTP_OPENDIR *od)
66{
67	/* Solaris needs sizeof(dirent) + path length (see below) */
68	static char buf[sizeof(struct dirent) + MAXPATHLEN];
69	struct dirent *ret = (struct dirent *)buf;
70#ifdef __GNU_LIBRARY__
71	static int inum = 1;
72#endif /* __GNU_LIBRARY__ */
73
74	if (od->dir[od->offset] == NULL)
75		return(NULL);
76
77	memset(buf, 0, sizeof(buf));
78
79	/*
80	 * Solaris defines dirent->d_name as a one byte array and expects
81	 * you to hack around it.
82	 */
83#ifdef BROKEN_ONE_BYTE_DIRENT_D_NAME
84	strlcpy(ret->d_name, od->dir[od->offset++]->filename, MAXPATHLEN);
85#else
86	strlcpy(ret->d_name, od->dir[od->offset++]->filename,
87	    sizeof(ret->d_name));
88#endif
89#ifdef __GNU_LIBRARY__
90	/*
91	 * Idiot glibc uses extensions to struct dirent for readdir with
92	 * ALTDIRFUNCs. Not that this is documented anywhere but the
93	 * source... Fake an inode number to appease it.
94	 */
95	ret->d_ino = inum++;
96	if (!inum)
97		inum = 1;
98#endif /* __GNU_LIBRARY__ */
99
100	return(ret);
101}
102
103static void
104fudge_closedir(struct SFTP_OPENDIR *od)
105{
106	free_sftp_dirents(od->dir);
107	xfree(od);
108}
109
110static int
111fudge_lstat(const char *path, struct stat *st)
112{
113	Attrib *a;
114
115	if (!(a = do_lstat(cur.conn, (char *)path, 0)))
116		return(-1);
117
118	attrib_to_stat(a, st);
119
120	return(0);
121}
122
123static int
124fudge_stat(const char *path, struct stat *st)
125{
126	Attrib *a;
127
128	if (!(a = do_stat(cur.conn, (char *)path, 0)))
129		return(-1);
130
131	attrib_to_stat(a, st);
132
133	return(0);
134}
135
136int
137remote_glob(struct sftp_conn *conn, const char *pattern, int flags,
138    int (*errfunc)(const char *, int), glob_t *pglob)
139{
140	pglob->gl_opendir = fudge_opendir;
141	pglob->gl_readdir = (struct dirent *(*)(void *))fudge_readdir;
142	pglob->gl_closedir = (void (*)(void *))fudge_closedir;
143	pglob->gl_lstat = fudge_lstat;
144	pglob->gl_stat = fudge_stat;
145
146	memset(&cur, 0, sizeof(cur));
147	cur.conn = conn;
148
149	return(glob(pattern, flags | GLOB_ALTDIRFUNC, errfunc, pglob));
150}
151