xref: /openssh-portable/sftp-glob.c (revision 7d845f4a)
1 /* $OpenBSD: sftp-glob.c,v 1.27 2015/01/14 13:54:13 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 <stdlib.h>
27 #include <string.h>
28 #include <stdlib.h>
29 
30 #include "xmalloc.h"
31 #include "sftp.h"
32 #include "sftp-common.h"
33 #include "sftp-client.h"
34 
35 int remote_glob(struct sftp_conn *, const char *, int,
36     int (*)(const char *, int), glob_t *);
37 
38 struct SFTP_OPENDIR {
39 	SFTP_DIRENT **dir;
40 	int offset;
41 };
42 
43 static struct {
44 	struct sftp_conn *conn;
45 } cur;
46 
47 static void *
fudge_opendir(const char * path)48 fudge_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 
64 static struct dirent *
fudge_readdir(struct SFTP_OPENDIR * od)65 fudge_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 
103 static void
fudge_closedir(struct SFTP_OPENDIR * od)104 fudge_closedir(struct SFTP_OPENDIR *od)
105 {
106 	free_sftp_dirents(od->dir);
107 	free(od);
108 }
109 
110 static int
fudge_lstat(const char * path,struct stat * st)111 fudge_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 
123 static int
fudge_stat(const char * path,struct stat * st)124 fudge_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 
136 int
remote_glob(struct sftp_conn * conn,const char * pattern,int flags,int (* errfunc)(const char *,int),glob_t * pglob)137 remote_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