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/* |
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sockinfo.C -- socket address management |
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Copyright (C) 2003-2008 Marc Lehmann <gvpe@schmorp.de> |
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|
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This file is part of GVPE. |
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|
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GVPE is free software; you can redistribute it and/or modify it |
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under the terms of the GNU General Public License as published by the |
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Free Software Foundation; either version 3 of the License, or (at your |
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option) any later version. |
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|
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This program is distributed in the hope that it will be useful, but |
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WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General |
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Public License for more details. |
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|
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You should have received a copy of the GNU General Public License along |
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with this program; if not, see <http://www.gnu.org/licenses/>. |
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|
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Additional permission under GNU GPL version 3 section 7 |
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|
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If you modify this Program, or any covered work, by linking or |
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combining it with the OpenSSL project's OpenSSL library (or a modified |
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version of that library), containing parts covered by the terms of the |
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OpenSSL or SSLeay licenses, the licensors of this Program grant you |
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additional permission to convey the resulting work. Corresponding |
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Source for a non-source form of such a combination shall include the |
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source code for the parts of OpenSSL used as well as that of the |
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covered work. |
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*/ |
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|
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#include "config.h" |
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|
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// for gethostbyname |
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#include <netdb.h> |
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|
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// for inet_aton |
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#include <sys/socket.h> |
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#include <netinet/in.h> |
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#include <arpa/inet.h> |
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|
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#include "gettext.h" |
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|
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#include "sockinfo.h" |
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#include "slog.h" |
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|
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#include <cstring> |
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#include <cstdio> |
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|
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// all ipv4-based protocols |
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#define PROTv4 (PROT_UDPv4 | PROT_TCPv4 | PROT_ICMPv4 | PROT_IPv4 | PROT_DNSv4) |
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|
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void |
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sockinfo::set (const sockaddr_in *sa, u8 prot_) |
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{ |
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host = sa->sin_addr.s_addr; |
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port = prot_ & (PROT_IPv4 | PROT_ICMPv4) ? 0 : sa->sin_port; |
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prot = prot_; |
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} |
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|
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void |
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sockinfo::set (const char *hostname, u16 port_, u8 prot_) |
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{ |
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prot = prot_; |
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host = 0; |
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port = htons (port_); |
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|
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if (prot & PROTv4 |
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&& hostname) |
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{ |
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struct in_addr in; |
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struct hostent *he; |
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|
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if (inet_aton (hostname, &in)) |
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host = in.s_addr; |
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else if ((he = gethostbyname (hostname)) |
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&& he->h_addrtype == AF_INET |
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&& he->h_length == 4 |
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&& he->h_addr_list[0]) |
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memcpy (&host, he->h_addr_list[0], 4); //sa->sin_family = he->h_addrtype; |
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else |
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slog (L_NOTICE, _("unable to resolve host '%s'"), hostname); |
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} |
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} |
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|
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void |
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sockinfo::set (const conf_node *conf, u8 prot_) |
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{ |
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if (prot_ == PROT_DNSv4) |
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{ |
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host = htonl (conf->id); port = 0; prot = prot_; |
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} |
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else |
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set (conf->hostname, |
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prot_ == PROT_UDPv4 ? conf->udp_port |
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: prot_ == PROT_TCPv4 ? conf->tcp_port |
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: prot_ == PROT_DNSv4 ? conf->dns_port |
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: 0, |
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prot_); |
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} |
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|
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const sockaddr * |
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sockinfo::sav4() const |
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{ |
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static sockaddr_in sa; |
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|
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sa.sin_family = AF_INET; |
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sa.sin_port = port; |
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sa.sin_addr.s_addr = host; |
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|
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return (const sockaddr *)&sa; |
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} |
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|
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static char hostport[10 + 15 + 1 + 5 + 1]; // proto / IPv4 : port |
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|
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const char * |
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sockinfo::ntoa () const |
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{ |
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in_addr ia = { host }; |
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|
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sprintf (hostport, "%.15s", inet_ntoa (ia)); |
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|
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return hostport; |
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} |
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|
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bool |
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sockinfo::valid () const |
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{ |
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return (prot & THISNODE->protocols) && host; |
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} |
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|
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sockinfo::operator const char *() const |
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{ |
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in_addr ia = { host }; |
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|
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sprintf (hostport, "%s/%.15s:%d", strprotocol (prot), inet_ntoa (ia), ntohs (port) & 0xffff); |
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|
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return hostport; |
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} |
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|
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u8 |
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sockinfo::supported_protocols (conf_node *conf) |
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{ |
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u8 protocols = prot; |
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|
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if (prot & (PROT_IPv4 | PROT_ICMPv4 | PROT_UDPv4 | PROT_TCPv4)) |
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protocols |= PROT_IPv4 | PROT_ICMPv4; |
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|
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if (conf && prot & PROTv4) |
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{ |
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if (conf->protocols & PROT_UDPv4 && conf->udp_port) |
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protocols |= PROT_UDPv4; |
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|
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if (conf->protocols & PROT_TCPv4 && conf->tcp_port) |
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protocols |= PROT_TCPv4; |
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|
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if (conf->protocols & PROT_DNSv4 && conf->dns_port) |
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protocols |= PROT_DNSv4; |
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} |
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|
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return protocols; |
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} |
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|
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bool |
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sockinfo::upgrade_protocol (u8 prot_, conf_node *conf) |
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{ |
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if (prot_ == prot) |
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return true; |
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|
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if (prot & PROTv4 |
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&& prot_ & PROTv4) |
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{ |
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if (prot_ & (PROT_IPv4 | PROT_ICMPv4)) |
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{ |
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prot = prot_; |
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port = 0; |
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return true; |
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} |
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|
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if (conf |
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&& prot_ & PROT_UDPv4 |
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&& conf->protocols & PROT_UDPv4 |
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&& conf->udp_port) |
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{ |
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prot = prot_; |
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port = htons (conf->udp_port); |
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return true; |
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} |
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|
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if (conf |
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&& prot_ & PROT_TCPv4 |
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&& conf->protocols & PROT_TCPv4 |
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&& conf->tcp_port) |
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{ |
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prot = prot_; |
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port = htons (conf->tcp_port); |
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return true; |
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} |
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} |
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|
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return false; |
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} |
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|
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bool |
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operator == (const sockinfo &a, const sockinfo &b) |
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{ |
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return a.host == b.host && a.port == b.port && a.prot == b.prot; |
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} |
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|
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bool |
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operator < (const sockinfo &a, const sockinfo &b) |
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{ |
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return a.host < b.host |
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|| (a.host == b.host && (a.port < b.port |
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|| (a.port == b.port && a.prot < b.prot))); |
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} |
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|
