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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "dbus/string_util.h"
#include <stddef.h>
#include "base/strings/string_util.h"
namespace dbus {
// This implementation is based upon D-Bus Specification Version 0.19.
bool IsValidObjectPath(const std::string& value) {
// A valid object path begins with '/'.
if (!base::StartsWith(value, "/", base::CompareCase::SENSITIVE))
return false;
// Elements are pieces delimited by '/'. For instance, "org", "chromium",
// "Foo" are elements of "/org/chromium/Foo".
int element_length = 0;
for (size_t i = 1; i < value.size(); ++i) {
const char c = value[i];
if (c == '/') {
// No element may be the empty string.
if (element_length == 0)
return false;
element_length = 0;
} else {
// Each element must only contain "[A-Z][a-z][0-9]_".
const bool is_valid_character =
('A' <= c && c <= 'Z') || ('a' <= c && c <= 'z') ||
('0' <= c && c <= '9') || c == '_';
if (!is_valid_character)
return false;
element_length++;
}
}
// A trailing '/' character is not allowed unless the path is the root path.
if (value.size() > 1 &&
base::EndsWith(value, "/", base::CompareCase::SENSITIVE))
return false;
return true;
}
} // namespace dbus
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