sftp-glob.c revision 258343 
1/* $OpenBSD: sftp-glob.c,v 1.25 2013/11/08 00:39:15 djm Exp $ */
2/*
3 * Copyright (c) 2001-2004 Damien Miller <djm@openbsd.org>
4 *
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 */
17
18#include "includes.h"
19
20#include <sys/types.h>
21#ifdef HAVE_SYS_STAT_H
22# include <sys/stat.h>
23#endif
24
25#include <dirent.h>
26#include <string.h>
27
28#include "xmalloc.h"
29#include "sftp.h"
30#include "buffer.h"
31#include "sftp-common.h"
32#include "sftp-client.h"
33
34int remote_glob(struct sftp_conn *, const char *, int,
35    int (*)(const char *, int), glob_t *);
36
37struct SFTP_OPENDIR {
38	SFTP_DIRENT **dir;
39	int offset;
40};
41
42static struct {
43	struct sftp_conn *conn;
44} cur;
45
46static void *
47fudge_opendir(const char *path)
48{
49	struct SFTP_OPENDIR *r;
50
51	r = xcalloc(1, sizeof(*r));
52
53	if (do_readdir(cur.conn, (char *)path, &r->dir)) {
54		free(r);
55		return(NULL);
56	}
57
58	r->offset = 0;
59
60	return((void *)r);
61}
62
63static struct dirent *
64fudge_readdir(struct SFTP_OPENDIR *od)
65{
66	/* Solaris needs sizeof(dirent) + path length (see below) */
67	static char buf[sizeof(struct dirent) + MAXPATHLEN];
68	struct dirent *ret = (struct dirent *)buf;
69#ifdef __GNU_LIBRARY__
70	static int inum = 1;
71#endif /* __GNU_LIBRARY__ */
72
73	if (od->dir[od->offset] == NULL)
74		return(NULL);
75
76	memset(buf, 0, sizeof(buf));
77
78	/*
79	 * Solaris defines dirent->d_name as a one byte array and expects
80	 * you to hack around it.
81	 */
82#ifdef BROKEN_ONE_BYTE_DIRENT_D_NAME
83	strlcpy(ret->d_name, od->dir[od->offset++]->filename, MAXPATHLEN);
84#else
85	strlcpy(ret->d_name, od->dir[od->offset++]->filename,
86	    sizeof(ret->d_name));
87#endif
88#ifdef __GNU_LIBRARY__
89	/*
90	 * Idiot glibc uses extensions to struct dirent for readdir with
91	 * ALTDIRFUNCs. Not that this is documented anywhere but the
92	 * source... Fake an inode number to appease it.
93	 */
94	ret->d_ino = inum++;
95	if (!inum)
96		inum = 1;
97#endif /* __GNU_LIBRARY__ */
98
99	return(ret);
100}
101
102static void
103fudge_closedir(struct SFTP_OPENDIR *od)
104{
105	free_sftp_dirents(od->dir);
106	free(od);
107}
108
109static int
110fudge_lstat(const char *path, struct stat *st)
111{
112	Attrib *a;
113
114	if (!(a = do_lstat(cur.conn, (char *)path, 1)))
115		return(-1);
116
117	attrib_to_stat(a, st);
118
119	return(0);
120}
121
122static int
123fudge_stat(const char *path, struct stat *st)
124{
125	Attrib *a;
126
127	if (!(a = do_stat(cur.conn, (char *)path, 1)))
128		return(-1);
129
130	attrib_to_stat(a, st);
131
132	return(0);
133}
134
135int
136remote_glob(struct sftp_conn *conn, const char *pattern, int flags,
137    int (*errfunc)(const char *, int), glob_t *pglob)
138{
139	pglob->gl_opendir = fudge_opendir;
140	pglob->gl_readdir = (struct dirent *(*)(void *))fudge_readdir;
141	pglob->gl_closedir = (void (*)(void *))fudge_closedir;
142	pglob->gl_lstat = fudge_lstat;
143	pglob->gl_stat = fudge_stat;
144
145	memset(&cur, 0, sizeof(cur));
146	cur.conn = conn;
147
148	return(glob(pattern, flags | GLOB_ALTDIRFUNC, errfunc, pglob));
149}
150