sftp-glob.c revision 262566 
1/* $OpenBSD: sftp-glob.c,v 1.26 2013/11/08 11:15:19 dtucker 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 <stdlib.h>
27#include <string.h>
28
29#include "xmalloc.h"
30#include "sftp.h"
31#include "buffer.h"
32#include "sftp-common.h"
33#include "sftp-client.h"
34
35int remote_glob(struct sftp_conn *, const char *, int,
36    int (*)(const char *, int), glob_t *);
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 = xcalloc(1, sizeof(*r));
53
54	if (do_readdir(cur.conn, (char *)path, &r->dir)) {
55		free(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	free(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, 1)))
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, 1)))
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