| // 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 |