sftp-common.c revision 1.3 
1/*
2 * Copyright (c) 2001 Markus Friedl.  All rights reserved.
3 * Copyright (c) 2001 Damien Miller.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "includes.h"
27RCSID("$OpenBSD: sftp-common.c,v 1.3 2001/06/26 17:27:24 markus Exp $");
28
29#include "buffer.h"
30#include "bufaux.h"
31#include "getput.h"
32#include "log.h"
33#include "xmalloc.h"
34
35#include "sftp.h"
36#include "sftp-common.h"
37
38/* Clear contents of attributes structure */
39void
40attrib_clear(Attrib *a)
41{
42	a->flags = 0;
43	a->size = 0;
44	a->uid = 0;
45	a->gid = 0;
46	a->perm = 0;
47	a->atime = 0;
48	a->mtime = 0;
49}
50
51/* Convert from struct stat to filexfer attribs */
52void
53stat_to_attrib(struct stat *st, Attrib *a)
54{
55	attrib_clear(a);
56	a->flags = 0;
57	a->flags |= SSH2_FILEXFER_ATTR_SIZE;
58	a->size = st->st_size;
59	a->flags |= SSH2_FILEXFER_ATTR_UIDGID;
60	a->uid = st->st_uid;
61	a->gid = st->st_gid;
62	a->flags |= SSH2_FILEXFER_ATTR_PERMISSIONS;
63	a->perm = st->st_mode;
64	a->flags |= SSH2_FILEXFER_ATTR_ACMODTIME;
65	a->atime = st->st_atime;
66	a->mtime = st->st_mtime;
67}
68
69/* Decode attributes in buffer */
70Attrib *
71decode_attrib(Buffer *b)
72{
73	static Attrib a;
74	attrib_clear(&a);
75	a.flags = buffer_get_int(b);
76	if (a.flags & SSH2_FILEXFER_ATTR_SIZE)
77		a.size = buffer_get_int64(b);
78	if (a.flags & SSH2_FILEXFER_ATTR_UIDGID) {
79		a.uid = buffer_get_int(b);
80		a.gid = buffer_get_int(b);
81	}
82	if (a.flags & SSH2_FILEXFER_ATTR_PERMISSIONS)
83		a.perm = buffer_get_int(b);
84	if (a.flags & SSH2_FILEXFER_ATTR_ACMODTIME) {
85		a.atime = buffer_get_int(b);
86		a.mtime = buffer_get_int(b);
87	}
88	/* vendor-specific extensions */
89	if (a.flags & SSH2_FILEXFER_ATTR_EXTENDED) {
90		char *type, *data;
91		int i, count;
92		count = buffer_get_int(b);
93		for (i = 0; i < count; i++) {
94			type = buffer_get_string(b, NULL);
95			data = buffer_get_string(b, NULL);
96			debug3("Got file attribute \"%s\"", type);
97			xfree(type);
98			xfree(data);
99		}
100	}
101	return &a;
102}
103
104/* Encode attributes to buffer */
105void
106encode_attrib(Buffer *b, Attrib *a)
107{
108	buffer_put_int(b, a->flags);
109	if (a->flags & SSH2_FILEXFER_ATTR_SIZE)
110		buffer_put_int64(b, a->size);
111	if (a->flags & SSH2_FILEXFER_ATTR_UIDGID) {
112		buffer_put_int(b, a->uid);
113		buffer_put_int(b, a->gid);
114	}
115	if (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS)
116		buffer_put_int(b, a->perm);
117	if (a->flags & SSH2_FILEXFER_ATTR_ACMODTIME) {
118		buffer_put_int(b, a->atime);
119		buffer_put_int(b, a->mtime);
120	}
121}
122
123/* Convert from SSH2_FX_ status to text error message */
124const char *
125fx2txt(int status)
126{
127	switch (status) {
128	case SSH2_FX_OK:
129		return("No error");
130	case SSH2_FX_EOF:
131		return("End of file");
132	case SSH2_FX_NO_SUCH_FILE:
133		return("No such file or directory");
134	case SSH2_FX_PERMISSION_DENIED:
135		return("Permission denied");
136	case SSH2_FX_FAILURE:
137		return("Failure");
138	case SSH2_FX_BAD_MESSAGE:
139		return("Bad message");
140	case SSH2_FX_NO_CONNECTION:
141		return("No connection");
142	case SSH2_FX_CONNECTION_LOST:
143		return("Connection lost");
144	case SSH2_FX_OP_UNSUPPORTED:
145		return("Operation unsupported");
146	default:
147		return("Unknown status");
148	};
149	/* NOTREACHED */
150}
151