Absolute File Name: | /home/opencoverage/opencoverage/guest-scripts/openssh/src/sftp-common.c |
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1 | /* $OpenBSD: sftp-common.c,v 1.31 2018/09/13 15:23:32 millert Exp $ */ | - | ||||||
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> | - | ||||||
31 | - | |||||||
32 | #include <grp.h> | - | ||||||
33 | #include <pwd.h> | - | ||||||
34 | #include <stdio.h> | - | ||||||
35 | #include <stdlib.h> | - | ||||||
36 | #include <string.h> | - | ||||||
37 | #include <time.h> | - | ||||||
38 | #include <stdarg.h> | - | ||||||
39 | #ifdef HAVE_UTIL_H | - | ||||||
40 | #include <util.h> | - | ||||||
41 | #endif | - | ||||||
42 | - | |||||||
43 | #include "xmalloc.h" | - | ||||||
44 | #include "ssherr.h" | - | ||||||
45 | #include "sshbuf.h" | - | ||||||
46 | #include "log.h" | - | ||||||
47 | #include "misc.h" | - | ||||||
48 | - | |||||||
49 | #include "sftp.h" | - | ||||||
50 | #include "sftp-common.h" | - | ||||||
51 | - | |||||||
52 | /* Clear contents of attributes structure */ | - | ||||||
53 | void | - | ||||||
54 | attrib_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 | } never executed: end of block | 0 | ||||||
64 | - | |||||||
65 | /* Convert from struct stat to filexfer attribs */ | - | ||||||
66 | void | - | ||||||
67 | stat_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 | } never executed: end of block | 0 | ||||||
82 | - | |||||||
83 | /* Convert from filexfer attribs to struct stat */ | - | ||||||
84 | void | - | ||||||
85 | attrib_to_stat(const Attrib *a, struct stat *st) | - | ||||||
86 | { | - | ||||||
87 | memset(st, 0, sizeof(*st)); | - | ||||||
88 | - | |||||||
89 | if (a->flags & SSH2_FILEXFER_ATTR_SIZE)
| 0 | ||||||
90 | st->st_size = a->size; never executed: st->st_size = a->size; | 0 | ||||||
91 | if (a->flags & SSH2_FILEXFER_ATTR_UIDGID) {
| 0 | ||||||
92 | st->st_uid = a->uid; | - | ||||||
93 | st->st_gid = a->gid; | - | ||||||
94 | } never executed: end of block | 0 | ||||||
95 | if (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS)
| 0 | ||||||
96 | st->st_mode = a->perm; never executed: st->st_mode = a->perm; | 0 | ||||||
97 | if (a->flags & SSH2_FILEXFER_ATTR_ACMODTIME) {
| 0 | ||||||
98 | st->st_atime = a->atime; | - | ||||||
99 | st->st_mtime = a->mtime; | - | ||||||
100 | } never executed: end of block | 0 | ||||||
101 | } never executed: end of block | 0 | ||||||
102 | - | |||||||
103 | /* Decode attributes in buffer */ | - | ||||||
104 | int | - | ||||||
105 | decode_attrib(struct sshbuf *b, Attrib *a) | - | ||||||
106 | { | - | ||||||
107 | int r; | - | ||||||
108 | - | |||||||
109 | attrib_clear(a); | - | ||||||
110 | if ((r = sshbuf_get_u32(b, &a->flags)) != 0)
| 0 | ||||||
111 | return r; never executed: return r; | 0 | ||||||
112 | if (a->flags & SSH2_FILEXFER_ATTR_SIZE) {
| 0 | ||||||
113 | if ((r = sshbuf_get_u64(b, &a->size)) != 0)
| 0 | ||||||
114 | return r; never executed: return r; | 0 | ||||||
115 | } never executed: end of block | 0 | ||||||
116 | if (a->flags & SSH2_FILEXFER_ATTR_UIDGID) {
| 0 | ||||||
117 | if ((r = sshbuf_get_u32(b, &a->uid)) != 0 ||
| 0 | ||||||
118 | (r = sshbuf_get_u32(b, &a->gid)) != 0)
| 0 | ||||||
119 | return r; never executed: return r; | 0 | ||||||
120 | } never executed: end of block | 0 | ||||||
121 | if (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) {
| 0 | ||||||
122 | if ((r = sshbuf_get_u32(b, &a->perm)) != 0)
| 0 | ||||||
123 | return r; never executed: return r; | 0 | ||||||
124 | } never executed: end of block | 0 | ||||||
125 | if (a->flags & SSH2_FILEXFER_ATTR_ACMODTIME) {
| 0 | ||||||
126 | if ((r = sshbuf_get_u32(b, &a->atime)) != 0 ||
| 0 | ||||||
127 | (r = sshbuf_get_u32(b, &a->mtime)) != 0)
| 0 | ||||||
128 | return r; never executed: return r; | 0 | ||||||
129 | } never executed: end of block | 0 | ||||||
130 | /* vendor-specific extensions */ | - | ||||||
131 | if (a->flags & SSH2_FILEXFER_ATTR_EXTENDED) {
| 0 | ||||||
132 | char *type; | - | ||||||
133 | u_char *data; | - | ||||||
134 | size_t dlen; | - | ||||||
135 | u_int i, count; | - | ||||||
136 | - | |||||||
137 | if ((r = sshbuf_get_u32(b, &count)) != 0)
| 0 | ||||||
138 | fatal("%s: buffer error: %s", __func__, ssh_err(r)); never executed: fatal("%s: buffer error: %s", __func__, ssh_err(r)); | 0 | ||||||
139 | for (i = 0; i < count; i++) {
| 0 | ||||||
140 | if ((r = sshbuf_get_cstring(b, &type, NULL)) != 0 ||
| 0 | ||||||
141 | (r = sshbuf_get_string(b, &data, &dlen)) != 0)
| 0 | ||||||
142 | return r; never executed: return r; | 0 | ||||||
143 | debug3("Got file attribute \"%.100s\" len %zu", | - | ||||||
144 | type, dlen); | - | ||||||
145 | free(type); | - | ||||||
146 | free(data); | - | ||||||
147 | } never executed: end of block | 0 | ||||||
148 | } never executed: end of block | 0 | ||||||
149 | return 0; never executed: return 0; | 0 | ||||||
150 | } | - | ||||||
151 | - | |||||||
152 | /* Encode attributes to buffer */ | - | ||||||
153 | int | - | ||||||
154 | encode_attrib(struct sshbuf *b, const Attrib *a) | - | ||||||
155 | { | - | ||||||
156 | int r; | - | ||||||
157 | - | |||||||
158 | if ((r = sshbuf_put_u32(b, a->flags)) != 0)
| 0 | ||||||
159 | return r; never executed: return r; | 0 | ||||||
160 | if (a->flags & SSH2_FILEXFER_ATTR_SIZE) {
| 0 | ||||||
161 | if ((r = sshbuf_put_u64(b, a->size)) != 0)
| 0 | ||||||
162 | return r; never executed: return r; | 0 | ||||||
163 | } never executed: end of block | 0 | ||||||
164 | if (a->flags & SSH2_FILEXFER_ATTR_UIDGID) {
| 0 | ||||||
165 | if ((r = sshbuf_put_u32(b, a->uid)) != 0 ||
| 0 | ||||||
166 | (r = sshbuf_put_u32(b, a->gid)) != 0)
| 0 | ||||||
167 | return r; never executed: return r; | 0 | ||||||
168 | } never executed: end of block | 0 | ||||||
169 | if (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) {
| 0 | ||||||
170 | if ((r = sshbuf_put_u32(b, a->perm)) != 0)
| 0 | ||||||
171 | return r; never executed: return r; | 0 | ||||||
172 | } never executed: end of block | 0 | ||||||
173 | if (a->flags & SSH2_FILEXFER_ATTR_ACMODTIME) {
| 0 | ||||||
174 | if ((r = sshbuf_put_u32(b, a->atime)) != 0 ||
| 0 | ||||||
175 | (r = sshbuf_put_u32(b, a->mtime)) != 0)
| 0 | ||||||
176 | return r; never executed: return r; | 0 | ||||||
177 | } never executed: end of block | 0 | ||||||
178 | return 0; never executed: return 0; | 0 | ||||||
179 | } | - | ||||||
180 | - | |||||||
181 | /* Convert from SSH2_FX_ status to text error message */ | - | ||||||
182 | const char * | - | ||||||
183 | fx2txt(int status) | - | ||||||
184 | { | - | ||||||
185 | switch (status) { | - | ||||||
186 | case SSH2_FX_OK: never executed: case 0: | 0 | ||||||
187 | return("No error"); never executed: return("No error"); | 0 | ||||||
188 | case SSH2_FX_EOF: never executed: case 1: | 0 | ||||||
189 | return("End of file"); never executed: return("End of file"); | 0 | ||||||
190 | case SSH2_FX_NO_SUCH_FILE: never executed: case 2: | 0 | ||||||
191 | return("No such file or directory"); never executed: return("No such file or directory"); | 0 | ||||||
192 | case SSH2_FX_PERMISSION_DENIED: never executed: case 3: | 0 | ||||||
193 | return("Permission denied"); never executed: return("Permission denied"); | 0 | ||||||
194 | case SSH2_FX_FAILURE: never executed: case 4: | 0 | ||||||
195 | return("Failure"); never executed: return("Failure"); | 0 | ||||||
196 | case SSH2_FX_BAD_MESSAGE: never executed: case 5: | 0 | ||||||
197 | return("Bad message"); never executed: return("Bad message"); | 0 | ||||||
198 | case SSH2_FX_NO_CONNECTION: never executed: case 6: | 0 | ||||||
199 | return("No connection"); never executed: return("No connection"); | 0 | ||||||
200 | case SSH2_FX_CONNECTION_LOST: never executed: case 7: | 0 | ||||||
201 | return("Connection lost"); never executed: return("Connection lost"); | 0 | ||||||
202 | case SSH2_FX_OP_UNSUPPORTED: never executed: case 8: | 0 | ||||||
203 | return("Operation unsupported"); never executed: return("Operation unsupported"); | 0 | ||||||
204 | default: never executed: default: | 0 | ||||||
205 | return("Unknown status"); never executed: return("Unknown status"); | 0 | ||||||
206 | } | - | ||||||
207 | /* NOTREACHED */ | - | ||||||
208 | } | - | ||||||
209 | - | |||||||
210 | /* | - | ||||||
211 | * drwxr-xr-x 5 markus markus 1024 Jan 13 18:39 .ssh | - | ||||||
212 | */ | - | ||||||
213 | char * | - | ||||||
214 | ls_file(const char *name, const struct stat *st, int remote, int si_units) | - | ||||||
215 | { | - | ||||||
216 | int ulen, glen, sz = 0; | - | ||||||
217 | struct tm *ltime = localtime(&st->st_mtime); | - | ||||||
218 | const char *user, *group; | - | ||||||
219 | char buf[1024], lc[8], mode[11+1], tbuf[12+1], ubuf[11+1], gbuf[11+1]; | - | ||||||
220 | char sbuf[FMT_SCALED_STRSIZE]; | - | ||||||
221 | time_t now; | - | ||||||
222 | - | |||||||
223 | strmode(st->st_mode, mode); | - | ||||||
224 | if (remote) {
| 0 | ||||||
225 | snprintf(ubuf, sizeof ubuf, "%u", (u_int)st->st_uid); | - | ||||||
226 | user = ubuf; | - | ||||||
227 | snprintf(gbuf, sizeof gbuf, "%u", (u_int)st->st_gid); | - | ||||||
228 | group = gbuf; | - | ||||||
229 | strlcpy(lc, "?", sizeof(lc)); | - | ||||||
230 | } else { never executed: end of block | 0 | ||||||
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); | - | ||||||
234 | } never executed: end of block | 0 | ||||||
235 | if (ltime != NULL) {
| 0 | ||||||
236 | now = time(NULL); | - | ||||||
237 | if (now - (365*24*60*60)/2 < st->st_mtime &&
| 0 | ||||||
238 | now >= st->st_mtime)
| 0 | ||||||
239 | sz = strftime(tbuf, sizeof tbuf, "%b %e %H:%M", ltime); never executed: sz = strftime(tbuf, sizeof tbuf, "%b %e %H:%M", ltime); | 0 | ||||||
240 | else | - | ||||||
241 | sz = strftime(tbuf, sizeof tbuf, "%b %e %Y", ltime); never executed: sz = strftime(tbuf, sizeof tbuf, "%b %e %Y", ltime); | 0 | ||||||
242 | } | - | ||||||
243 | if (sz == 0)
| 0 | ||||||
244 | tbuf[0] = '\0'; never executed: tbuf[0] = '\0'; | 0 | ||||||
245 | ulen = MAXIMUM(strlen(user), 8);
| 0 | ||||||
246 | glen = MAXIMUM(strlen(group), 8);
| 0 | ||||||
247 | if (si_units) {
| 0 | ||||||
248 | fmt_scaled((long long)st->st_size, sbuf); | - | ||||||
249 | snprintf(buf, sizeof buf, "%s %3s %-*s %-*s %8s %s %s", | - | ||||||
250 | mode, lc, ulen, user, glen, group, | - | ||||||
251 | sbuf, tbuf, name); | - | ||||||
252 | } else { never executed: end of block | 0 | ||||||
253 | snprintf(buf, sizeof buf, "%s %3s %-*s %-*s %8llu %s %s", | - | ||||||
254 | mode, lc, ulen, user, glen, group, | - | ||||||
255 | (unsigned long long)st->st_size, tbuf, name); | - | ||||||
256 | } never executed: end of block | 0 | ||||||
257 | return xstrdup(buf); never executed: return xstrdup(buf); | 0 | ||||||
258 | } | - | ||||||
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