183 lines
4.2 KiB
C
183 lines
4.2 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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/***
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This file is part of systemd.
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Copyright 2015 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include "util.h"
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#include "import-util.h"
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int import_url_last_component(const char *url, char **ret) {
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const char *e, *p;
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char *s;
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e = strchrnul(url, '?');
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while (e > url && e[-1] == '/')
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e--;
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p = e;
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while (p > url && p[-1] != '/')
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p--;
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if (e <= p)
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return -EINVAL;
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s = strndup(p, e - p);
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if (!s)
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return -ENOMEM;
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*ret = s;
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return 0;
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}
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int import_url_change_last_component(const char *url, const char *suffix, char **ret) {
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const char *e;
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char *s;
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assert(url);
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assert(ret);
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e = strchrnul(url, '?');
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while (e > url && e[-1] == '/')
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e--;
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while (e > url && e[-1] != '/')
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e--;
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if (e <= url)
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return -EINVAL;
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s = new(char, (e - url) + strlen(suffix) + 1);
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if (!s)
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return -ENOMEM;
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strcpy(mempcpy(s, url, e - url), suffix);
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*ret = s;
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return 0;
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}
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static const char* const import_verify_table[_IMPORT_VERIFY_MAX] = {
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[IMPORT_VERIFY_NO] = "no",
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[IMPORT_VERIFY_CHECKSUM] = "checksum",
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[IMPORT_VERIFY_SIGNATURE] = "signature",
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};
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DEFINE_STRING_TABLE_LOOKUP(import_verify, ImportVerify);
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int tar_strip_suffixes(const char *name, char **ret) {
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const char *e;
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char *s;
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e = endswith(name, ".tar");
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if (!e)
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e = endswith(name, ".tar.xz");
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if (!e)
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e = endswith(name, ".tar.gz");
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if (!e)
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e = endswith(name, ".tar.bz2");
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if (!e)
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e = endswith(name, ".tgz");
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if (!e)
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e = strchr(name, 0);
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if (e <= name)
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return -EINVAL;
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s = strndup(name, e - name);
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if (!s)
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return -ENOMEM;
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*ret = s;
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return 0;
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}
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int raw_strip_suffixes(const char *p, char **ret) {
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static const char suffixes[] =
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".xz\0"
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".gz\0"
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".bz2\0"
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".raw\0"
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".qcow2\0"
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".img\0"
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".bin\0";
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_cleanup_free_ char *q = NULL;
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q = strdup(p);
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if (!q)
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return -ENOMEM;
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for (;;) {
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const char *sfx;
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bool changed = false;
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NULSTR_FOREACH(sfx, suffixes) {
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char *e;
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e = endswith(q, sfx);
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if (e) {
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*e = 0;
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changed = true;
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}
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}
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if (!changed)
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break;
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}
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*ret = q;
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q = NULL;
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return 0;
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}
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bool dkr_name_is_valid(const char *name) {
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const char *slash, *p;
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if (isempty(name))
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return false;
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slash = strchr(name, '/');
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if (!slash)
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return false;
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if (!filename_is_valid(slash + 1))
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return false;
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p = strndupa(name, slash - name);
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if (!filename_is_valid(p))
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return false;
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return true;
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}
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bool dkr_id_is_valid(const char *id) {
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if (!filename_is_valid(id))
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return false;
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if (!in_charset(id, "0123456789abcdef"))
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return false;
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return true;
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}
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