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- // Copyright 2022 The Chromium Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style license that can be
- // found in the LICENSE file.
- #include "net/base/sockaddr_util_posix.h"
- #include <stddef.h>
- #include <string.h>
- #include <stddef.h>
- #include <sys/socket.h>
- #include <sys/un.h>
- #include "build/build_config.h"
- #include "net/base/sockaddr_storage.h"
- namespace net {
- bool FillUnixAddress(const std::string& socket_path,
- bool use_abstract_namespace,
- SockaddrStorage* address) {
- // Caller should provide a non-empty path for the socket address.
- if (socket_path.empty())
- return false;
- size_t path_max = address->addr_len - offsetof(struct sockaddr_un, sun_path);
- // Non abstract namespace pathname should be null-terminated. Abstract
- // namespace pathname must start with '\0'. So, the size is always greater
- // than socket_path size by 1.
- size_t path_size = socket_path.size() + 1;
- if (path_size > path_max)
- return false;
- struct sockaddr_un* socket_addr =
- reinterpret_cast<struct sockaddr_un*>(address->addr);
- memset(socket_addr, 0, address->addr_len);
- socket_addr->sun_family = AF_UNIX;
- address->addr_len = path_size + offsetof(struct sockaddr_un, sun_path);
- if (!use_abstract_namespace) {
- memcpy(socket_addr->sun_path, socket_path.c_str(), socket_path.size());
- return true;
- }
- #if BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
- // Convert the path given into abstract socket name. It must start with
- // the '\0' character, so we are adding it. |addr_len| must specify the
- // length of the structure exactly, as potentially the socket name may
- // have '\0' characters embedded (although we don't support this).
- // Note that addr.sun_path is already zero initialized.
- memcpy(socket_addr->sun_path + 1, socket_path.c_str(), socket_path.size());
- return true;
- #else
- return false;
- #endif
- }
- } // namespace net
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