mirror of
https://git.rwth-aachen.de/acs/public/villas/node/
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70 lines
2.2 KiB
C++
70 lines
2.2 KiB
C++
/* Node type: socket.
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*
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* Author: Steffen Vogel <post@steffenvogel.de>
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* SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
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* SPDX-License-Identifier: Apache-2.0
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*/
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#pragma once
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#include <netinet/in.h>
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#include <sys/socket.h>
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#include <sys/types.h>
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#include <sys/un.h>
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#include <villas/node/config.hpp>
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#if defined(LIBNL3_ROUTE_FOUND) && defined(__linux__)
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#define WITH_SOCKET_LAYER_ETH
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#include <linux/if_packet.h>
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#include <netinet/ether.h>
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#endif // LIBNL3_ROUTE_FOUND
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union sockaddr_union {
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struct sockaddr sa;
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struct sockaddr_storage ss;
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struct sockaddr_in sin;
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struct sockaddr_in6 sin6;
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struct sockaddr_un sun;
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#ifdef WITH_SOCKET_LAYER_ETH
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struct sockaddr_ll sll;
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#endif
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};
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namespace villas {
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namespace node {
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enum class SocketLayer { ETH, IP, UDP, UNIX, TCP_CLIENT, TCP_SERVER};
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/* Generate printable socket address depending on the address family
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*
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* A IPv4 address is formatted as dotted decimals followed by the port/protocol number
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* A link layer address is formatted in hexadecimals digits seperated by colons and the inferface name
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*
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* @param sa A pointer to the socket address.
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* @return The buffer containing the textual representation of the address. The caller is responsible to free() this buffer!
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*/
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char *socket_print_addr(struct sockaddr *saddr);
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/* Parse a socket address depending on the address family
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*
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* A IPv4 address has the follwing format: [hostname/ip]:[port/protocol]
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* A link layer address has the following format: [mac]%[interface]:[ethertype]
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*
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* TODO: Add support for autodetection of address type
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*
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* @param str A string specifiying the socket address. See description for allowed formats.
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* @param sa A pointer to the resolved address
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* @param layer Specifies the address type in which the addr is given
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* @param flags Flags for getaddrinfo(2)
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* @retval 0 Success. Everything went well.
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* @retval <0 Error. Something went wrong.
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*/
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int socket_parse_address(const char *str, struct sockaddr *sa,
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enum SocketLayer layer, int flags);
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int socket_compare_addr(struct sockaddr *x, struct sockaddr *y);
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} // namespace node
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} // namespace villas
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