diff options
Diffstat (limited to 'src/shared/import-util.c')
| -rw-r--r-- | src/shared/import-util.c | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/src/shared/import-util.c b/src/shared/import-util.c new file mode 100644 index 0000000000..46671e8c99 --- /dev/null +++ b/src/shared/import-util.c @@ -0,0 +1,182 @@ +/*-*- 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 "util.h" +#include "import-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_SUM] = "sum", + [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_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; +} |