xref: /freebsd/crypto/openssh/sftp-common.c (revision 9207b4cff7b8d483f4dd3c62266c2b58819eb7f9)
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"
27 RCSID("$OpenBSD: sftp-common.c,v 1.2 2001/02/06 23:50:10 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 void
39 attrib_clear(Attrib *a)
40 {
41 	a->flags = 0;
42 	a->size = 0;
43 	a->uid = 0;
44 	a->gid = 0;
45 	a->perm = 0;
46 	a->atime = 0;
47 	a->mtime = 0;
48 }
49 
50 void
51 stat_to_attrib(struct stat *st, Attrib *a)
52 {
53 	attrib_clear(a);
54 	a->flags = 0;
55 	a->flags |= SSH2_FILEXFER_ATTR_SIZE;
56 	a->size = st->st_size;
57 	a->flags |= SSH2_FILEXFER_ATTR_UIDGID;
58 	a->uid = st->st_uid;
59 	a->gid = st->st_gid;
60 	a->flags |= SSH2_FILEXFER_ATTR_PERMISSIONS;
61 	a->perm = st->st_mode;
62 	a->flags |= SSH2_FILEXFER_ATTR_ACMODTIME;
63 	a->atime = st->st_atime;
64 	a->mtime = st->st_mtime;
65 }
66 
67 Attrib *
68 decode_attrib(Buffer *b)
69 {
70 	static Attrib a;
71 	attrib_clear(&a);
72 	a.flags = buffer_get_int(b);
73 	if (a.flags & SSH2_FILEXFER_ATTR_SIZE)
74 		a.size = buffer_get_int64(b);
75 	if (a.flags & SSH2_FILEXFER_ATTR_UIDGID) {
76 		a.uid = buffer_get_int(b);
77 		a.gid = buffer_get_int(b);
78 	}
79 	if (a.flags & SSH2_FILEXFER_ATTR_PERMISSIONS)
80 		a.perm = buffer_get_int(b);
81 	if (a.flags & SSH2_FILEXFER_ATTR_ACMODTIME) {
82 		a.atime = buffer_get_int(b);
83 		a.mtime = buffer_get_int(b);
84 	}
85 	/* vendor-specific extensions */
86 	if (a.flags & SSH2_FILEXFER_ATTR_EXTENDED) {
87 		char *type, *data;
88 		int i, count;
89 		count = buffer_get_int(b);
90 		for (i = 0; i < count; i++) {
91 			type = buffer_get_string(b, NULL);
92 			data = buffer_get_string(b, NULL);
93 			debug3("Got file attribute \"%s\"", type);
94 			xfree(type);
95 			xfree(data);
96 		}
97 	}
98 	return &a;
99 }
100 
101 void
102 encode_attrib(Buffer *b, Attrib *a)
103 {
104 	buffer_put_int(b, a->flags);
105 	if (a->flags & SSH2_FILEXFER_ATTR_SIZE)
106 		buffer_put_int64(b, a->size);
107 	if (a->flags & SSH2_FILEXFER_ATTR_UIDGID) {
108 		buffer_put_int(b, a->uid);
109 		buffer_put_int(b, a->gid);
110 	}
111 	if (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS)
112 		buffer_put_int(b, a->perm);
113 	if (a->flags & SSH2_FILEXFER_ATTR_ACMODTIME) {
114 		buffer_put_int(b, a->atime);
115 		buffer_put_int(b, a->mtime);
116 	}
117 }
118 
119 const char *
120 fx2txt(int status)
121 {
122 	switch (status) {
123 	case SSH2_FX_OK:
124 		return("No error");
125 	case SSH2_FX_EOF:
126 		return("End of file");
127 	case SSH2_FX_NO_SUCH_FILE:
128 		return("No such file or directory");
129 	case SSH2_FX_PERMISSION_DENIED:
130 		return("Permission denied");
131 	case SSH2_FX_FAILURE:
132 		return("Failure");
133 	case SSH2_FX_BAD_MESSAGE:
134 		return("Bad message");
135 	case SSH2_FX_NO_CONNECTION:
136 		return("No connection");
137 	case SSH2_FX_CONNECTION_LOST:
138 		return("Connection lost");
139 	case SSH2_FX_OP_UNSUPPORTED:
140 		return("Operation unsupported");
141 	default:
142 		return("Unknown status");
143 	};
144 	/* NOTREACHED */
145 }
146 
147