mirror of
https://github.com/OpenVPN/openvpn3.git
synced 2024-09-20 12:12:15 +02:00
68 lines
1.9 KiB
C++
68 lines
1.9 KiB
C++
// OpenVPN -- An application to securely tunnel IP networks
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// over a single port, with support for SSL/TLS-based
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// session authentication and key exchange,
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// packet encryption, packet authentication, and
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// packet compression.
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//
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// Copyright (C) 2012-2020 OpenVPN Inc.
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License Version 3
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// as published by the Free Software Foundation.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program in the COPYING file.
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// If not, see <http://www.gnu.org/licenses/>.
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#ifndef OPENVPN_BUFFER_BUFREAD_H
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#define OPENVPN_BUFFER_BUFREAD_H
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#include <unistd.h>
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#include <errno.h>
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#include <string>
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#include <cstring>
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#include <openvpn/common/size.hpp>
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#include <openvpn/common/exception.hpp>
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#include <openvpn/common/strerror.hpp>
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#include <openvpn/buffer/buflist.hpp>
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namespace openvpn {
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OPENVPN_EXCEPTION(buf_read_error);
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inline bool buf_read(const int fd, Buffer& buf, const std::string& title)
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{
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const ssize_t status = ::read(fd, buf.data_end(), buf.remaining(0));
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if (status < 0)
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{
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const int eno = errno;
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OPENVPN_THROW(buf_read_error, "on " << title << " : " << strerror_str(eno));
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}
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else if (!status)
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return false;
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buf.inc_size(status);
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return true;
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}
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inline BufferList buf_read(const int fd, const std::string& title)
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{
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BufferList buflist;
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while (true)
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{
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BufferAllocated buf(1024, 0);
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if (!buf_read(fd, buf, title))
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break;
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buflist.put_consume(buf);
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}
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return buflist;
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}
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}
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#endif
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