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/***
This file is part of systemd.
Copyright 2010 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 <stdbool.h>
#include "systemd-basic/string-util.h"
#include "systemd-basic/utf8.h"
#include "systemd-basic/web-util.h"
bool http_etag_is_valid(const char *etag) {
if (isempty(etag))
return false;
if (!endswith(etag, "\""))
return false;
if (!startswith(etag, "\"") && !startswith(etag, "W/\""))
return false;
return true;
}
bool http_url_is_valid(const char *url) {
const char *p;
if (isempty(url))
return false;
p = startswith(url, "http://");
if (!p)
p = startswith(url, "https://");
if (!p)
return false;
if (isempty(p))
return false;
return ascii_is_valid(p);
}
bool documentation_url_is_valid(const char *url) {
const char *p;
if (isempty(url))
return false;
if (http_url_is_valid(url))
return true;
p = startswith(url, "file:/");
if (!p)
p = startswith(url, "info:");
if (!p)
p = startswith(url, "man:");
if (isempty(p))
return false;
return ascii_is_valid(p);
}
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