1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
|
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
Copyright 2015 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include "alloc-util.h"
#include "btrfs-util.h"
#include "import-util.h"
#include "path-util.h"
#include "string-table.h"
#include "string-util.h"
#include "util.h"
int import_url_last_component(const char *url, char **ret) {
const char *e, *p;
char *s;
e = strchrnul(url, '?');
while (e > url && e[-1] == '/')
e--;
p = e;
while (p > url && p[-1] != '/')
p--;
if (e <= p)
return -EINVAL;
s = strndup(p, e - p);
if (!s)
return -ENOMEM;
*ret = s;
return 0;
}
int import_url_change_last_component(const char *url, const char *suffix, char **ret) {
const char *e;
char *s;
assert(url);
assert(ret);
e = strchrnul(url, '?');
while (e > url && e[-1] == '/')
e--;
while (e > url && e[-1] != '/')
e--;
if (e <= url)
return -EINVAL;
s = new(char, (e - url) + strlen(suffix) + 1);
if (!s)
return -ENOMEM;
strcpy(mempcpy(s, url, e - url), suffix);
*ret = s;
return 0;
}
static const char* const import_verify_table[_IMPORT_VERIFY_MAX] = {
[IMPORT_VERIFY_NO] = "no",
[IMPORT_VERIFY_CHECKSUM] = "checksum",
[IMPORT_VERIFY_SIGNATURE] = "signature",
};
DEFINE_STRING_TABLE_LOOKUP(import_verify, ImportVerify);
int tar_strip_suffixes(const char *name, char **ret) {
const char *e;
char *s;
e = endswith(name, ".tar");
if (!e)
e = endswith(name, ".tar.xz");
if (!e)
e = endswith(name, ".tar.gz");
if (!e)
e = endswith(name, ".tar.bz2");
if (!e)
e = endswith(name, ".tgz");
if (!e)
e = strchr(name, 0);
if (e <= name)
return -EINVAL;
s = strndup(name, e - name);
if (!s)
return -ENOMEM;
*ret = s;
return 0;
}
int raw_strip_suffixes(const char *p, char **ret) {
static const char suffixes[] =
".xz\0"
".gz\0"
".bz2\0"
".raw\0"
".qcow2\0"
".img\0"
".bin\0";
_cleanup_free_ char *q = NULL;
q = strdup(p);
if (!q)
return -ENOMEM;
for (;;) {
const char *sfx;
bool changed = false;
NULSTR_FOREACH(sfx, suffixes) {
char *e;
e = endswith(q, sfx);
if (e) {
*e = 0;
changed = true;
}
}
if (!changed)
break;
}
*ret = q;
q = NULL;
return 0;
}
bool dkr_digest_is_valid(const char *digest) {
/* 7 chars for prefix, 64 chars for the digest itself */
if (strlen(digest) != 71)
return false;
return startswith(digest, "sha256:") && in_charset(digest + 7, "0123456789abcdef");
}
bool dkr_ref_is_valid(const char *ref) {
const char *colon;
if (isempty(ref))
return false;
colon = strchr(ref, ':');
if (!colon)
return filename_is_valid(ref);
return dkr_digest_is_valid(ref);
}
bool dkr_name_is_valid(const char *name) {
const char *slash, *p;
if (isempty(name))
return false;
slash = strchr(name, '/');
if (!slash)
return false;
if (!filename_is_valid(slash + 1))
return false;
p = strndupa(name, slash - name);
if (!filename_is_valid(p))
return false;
return true;
}
bool dkr_id_is_valid(const char *id) {
if (!filename_is_valid(id))
return false;
if (!in_charset(id, "0123456789abcdef"))
return false;
return true;
}
int import_assign_pool_quota_and_warn(const char *path) {
int r;
r = btrfs_subvol_auto_qgroup("/var/lib/machines", 0, true);
if (r == -ENOTTY) {
log_debug_errno(r, "Failed to set up default quota hierarchy for /var/lib/machines, as directory is not on btrfs or not a subvolume. Ignoring.");
return 0;
}
if (r < 0)
return log_error_errno(r, "Failed to set up default quota hierarchy for /var/lib/machines: %m");
if (r > 0)
log_info("Set up default quota hierarchy for /var/lib/machines.");
r = btrfs_subvol_auto_qgroup(path, 0, true);
if (r == -ENOTTY) {
log_debug_errno(r, "Failed to set up quota hierarchy for %s, as directory is not on btrfs or not a subvolume. Ignoring.", path);
return 0;
}
if (r < 0)
return log_error_errno(r, "Failed to set up default quota hierarchy for %s: %m", path);
if (r > 0)
log_info("Set up default quota hierarchy for %s.", path);
return 0;
}
|
