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