OpenSSH: Revert few local modifications.
[dragonfly.git] / crypto / openssh / sftp-common.c
CommitLineData
ce74baca 1/* $OpenBSD: sftp-common.c,v 1.30 2017/06/10 06:36:46 djm Exp $ */
16c343f1
PA
2/*
3 * Copyright (c) 2001 Markus Friedl. All rights reserved.
4 * Copyright (c) 2001 Damien Miller. All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#include "includes.h"
28
29#include <sys/types.h>
30#include <sys/stat.h>
16c343f1
PA
31
32#include <grp.h>
33#include <pwd.h>
34#include <stdio.h>
36e94dc5 35#include <stdlib.h>
16c343f1
PA
36#include <string.h>
37#include <time.h>
38#include <stdarg.h>
856ea928
PA
39#ifdef HAVE_UTIL_H
40#include <util.h>
41#endif
16c343f1
PA
42
43#include "xmalloc.h"
e9778795
PA
44#include "ssherr.h"
45#include "sshbuf.h"
16c343f1 46#include "log.h"
ce74baca 47#include "misc.h"
16c343f1
PA
48
49#include "sftp.h"
50#include "sftp-common.h"
51
52/* Clear contents of attributes structure */
53void
54attrib_clear(Attrib *a)
55{
56 a->flags = 0;
57 a->size = 0;
58 a->uid = 0;
59 a->gid = 0;
60 a->perm = 0;
61 a->atime = 0;
62 a->mtime = 0;
63}
64
65/* Convert from struct stat to filexfer attribs */
66void
67stat_to_attrib(const struct stat *st, Attrib *a)
68{
69 attrib_clear(a);
70 a->flags = 0;
71 a->flags |= SSH2_FILEXFER_ATTR_SIZE;
72 a->size = st->st_size;
73 a->flags |= SSH2_FILEXFER_ATTR_UIDGID;
74 a->uid = st->st_uid;
75 a->gid = st->st_gid;
76 a->flags |= SSH2_FILEXFER_ATTR_PERMISSIONS;
77 a->perm = st->st_mode;
78 a->flags |= SSH2_FILEXFER_ATTR_ACMODTIME;
79 a->atime = st->st_atime;
80 a->mtime = st->st_mtime;
81}
82
83/* Convert from filexfer attribs to struct stat */
84void
85attrib_to_stat(const Attrib *a, struct stat *st)
86{
87 memset(st, 0, sizeof(*st));
88
89 if (a->flags & SSH2_FILEXFER_ATTR_SIZE)
90 st->st_size = a->size;
91 if (a->flags & SSH2_FILEXFER_ATTR_UIDGID) {
92 st->st_uid = a->uid;
93 st->st_gid = a->gid;
94 }
95 if (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS)
96 st->st_mode = a->perm;
97 if (a->flags & SSH2_FILEXFER_ATTR_ACMODTIME) {
98 st->st_atime = a->atime;
99 st->st_mtime = a->mtime;
100 }
101}
102
103/* Decode attributes in buffer */
e9778795
PA
104int
105decode_attrib(struct sshbuf *b, Attrib *a)
16c343f1 106{
e9778795 107 int r;
16c343f1 108
e9778795
PA
109 attrib_clear(a);
110 if ((r = sshbuf_get_u32(b, &a->flags)) != 0)
111 return r;
112 if (a->flags & SSH2_FILEXFER_ATTR_SIZE) {
113 if ((r = sshbuf_get_u64(b, &a->size)) != 0)
114 return r;
115 }
116 if (a->flags & SSH2_FILEXFER_ATTR_UIDGID) {
117 if ((r = sshbuf_get_u32(b, &a->uid)) != 0 ||
118 (r = sshbuf_get_u32(b, &a->gid)) != 0)
119 return r;
16c343f1 120 }
e9778795
PA
121 if (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) {
122 if ((r = sshbuf_get_u32(b, &a->perm)) != 0)
123 return r;
124 }
125 if (a->flags & SSH2_FILEXFER_ATTR_ACMODTIME) {
126 if ((r = sshbuf_get_u32(b, &a->atime)) != 0 ||
127 (r = sshbuf_get_u32(b, &a->mtime)) != 0)
128 return r;
16c343f1
PA
129 }
130 /* vendor-specific extensions */
e9778795
PA
131 if (a->flags & SSH2_FILEXFER_ATTR_EXTENDED) {
132 char *type;
133 u_char *data;
134 size_t dlen;
135 u_int i, count;
16c343f1 136
e9778795
PA
137 if ((r = sshbuf_get_u32(b, &count)) != 0)
138 fatal("%s: buffer error: %s", __func__, ssh_err(r));
16c343f1 139 for (i = 0; i < count; i++) {
e9778795
PA
140 if ((r = sshbuf_get_cstring(b, &type, NULL)) != 0 ||
141 (r = sshbuf_get_string(b, &data, &dlen)) != 0)
142 return r;
143 debug3("Got file attribute \"%.100s\" len %zu",
144 type, dlen);
36e94dc5
PA
145 free(type);
146 free(data);
16c343f1
PA
147 }
148 }
e9778795 149 return 0;
16c343f1
PA
150}
151
152/* Encode attributes to buffer */
e9778795
PA
153int
154encode_attrib(struct sshbuf *b, const Attrib *a)
16c343f1 155{
e9778795
PA
156 int r;
157
158 if ((r = sshbuf_put_u32(b, a->flags)) != 0)
159 return r;
160 if (a->flags & SSH2_FILEXFER_ATTR_SIZE) {
161 if ((r = sshbuf_put_u64(b, a->size)) != 0)
162 return r;
163 }
16c343f1 164 if (a->flags & SSH2_FILEXFER_ATTR_UIDGID) {
e9778795
PA
165 if ((r = sshbuf_put_u32(b, a->uid)) != 0 ||
166 (r = sshbuf_put_u32(b, a->gid)) != 0)
167 return r;
168 }
169 if (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) {
170 if ((r = sshbuf_put_u32(b, a->perm)) != 0)
171 return r;
16c343f1 172 }
16c343f1 173 if (a->flags & SSH2_FILEXFER_ATTR_ACMODTIME) {
e9778795
PA
174 if ((r = sshbuf_put_u32(b, a->atime)) != 0 ||
175 (r = sshbuf_put_u32(b, a->mtime)) != 0)
176 return r;
16c343f1 177 }
e9778795 178 return 0;
16c343f1
PA
179}
180
181/* Convert from SSH2_FX_ status to text error message */
182const char *
183fx2txt(int status)
184{
185 switch (status) {
186 case SSH2_FX_OK:
187 return("No error");
188 case SSH2_FX_EOF:
189 return("End of file");
190 case SSH2_FX_NO_SUCH_FILE:
191 return("No such file or directory");
192 case SSH2_FX_PERMISSION_DENIED:
193 return("Permission denied");
194 case SSH2_FX_FAILURE:
195 return("Failure");
196 case SSH2_FX_BAD_MESSAGE:
197 return("Bad message");
198 case SSH2_FX_NO_CONNECTION:
199 return("No connection");
200 case SSH2_FX_CONNECTION_LOST:
201 return("Connection lost");
202 case SSH2_FX_OP_UNSUPPORTED:
203 return("Operation unsupported");
204 default:
205 return("Unknown status");
206 }
207 /* NOTREACHED */
208}
209
210/*
211 * drwxr-xr-x 5 markus markus 1024 Jan 13 18:39 .ssh
212 */
213char *
856ea928 214ls_file(const char *name, const struct stat *st, int remote, int si_units)
16c343f1
PA
215{
216 int ulen, glen, sz = 0;
16c343f1 217 struct tm *ltime = localtime(&st->st_mtime);
a4a3adb1 218 char *user, *group;
ce74baca 219 char buf[1024], lc[8], mode[11+1], tbuf[12+1], ubuf[11+1], gbuf[11+1];
856ea928 220 char sbuf[FMT_SCALED_STRSIZE];
36e94dc5 221 time_t now;
16c343f1
PA
222
223 strmode(st->st_mode, mode);
ce74baca 224 if (remote) {
16c343f1
PA
225 snprintf(ubuf, sizeof ubuf, "%u", (u_int)st->st_uid);
226 user = ubuf;
16c343f1
PA
227 snprintf(gbuf, sizeof gbuf, "%u", (u_int)st->st_gid);
228 group = gbuf;
ce74baca
MD
229 strlcpy(lc, "?", sizeof(lc));
230 } else {
231 user = user_from_uid(st->st_uid, 0);
232 group = group_from_gid(st->st_gid, 0);
233 snprintf(lc, sizeof(lc), "%u", (u_int)st->st_nlink);
16c343f1
PA
234 }
235 if (ltime != NULL) {
36e94dc5
PA
236 now = time(NULL);
237 if (now - (365*24*60*60)/2 < st->st_mtime &&
238 now >= st->st_mtime)
16c343f1
PA
239 sz = strftime(tbuf, sizeof tbuf, "%b %e %H:%M", ltime);
240 else
241 sz = strftime(tbuf, sizeof tbuf, "%b %e %Y", ltime);
242 }
243 if (sz == 0)
244 tbuf[0] = '\0';
ce74baca
MD
245 ulen = MAXIMUM(strlen(user), 8);
246 glen = MAXIMUM(strlen(group), 8);
856ea928
PA
247 if (si_units) {
248 fmt_scaled((long long)st->st_size, sbuf);
ce74baca
MD
249 snprintf(buf, sizeof buf, "%s %3s %-*s %-*s %8s %s %s",
250 mode, lc, ulen, user, glen, group,
856ea928
PA
251 sbuf, tbuf, name);
252 } else {
ce74baca
MD
253 snprintf(buf, sizeof buf, "%s %3s %-*s %-*s %8llu %s %s",
254 mode, lc, ulen, user, glen, group,
856ea928
PA
255 (unsigned long long)st->st_size, tbuf, name);
256 }
16c343f1
PA
257 return xstrdup(buf);
258}