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68 lines
1.3 KiB
C++
68 lines
1.3 KiB
C++
/*
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* \brief Internet protocol version 4
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* \author Stefan Kalkowski
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* \date 2010-08-19
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*/
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/*
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* Copyright (C) 2010-2013 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU General Public License version 2.
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*/
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#include <util/token.h>
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#include <util/string.h>
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#include <net/ipv4.h>
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using namespace Net;
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struct Scanner_policy_number
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{
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static bool identifier_char(char c, unsigned i ) {
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return Genode::is_digit(c) && c !='.'; }
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};
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typedef ::Genode::Token<Scanner_policy_number> Token;
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Ipv4_packet::Ipv4_address Ipv4_packet::ip_from_string(const char *ip)
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{
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Ipv4_address ip_addr;
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Token t(ip);
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char tmpstr[4];
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int cnt = 0;
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unsigned char ipb[4] = {0};
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while(t) {
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if (t.type() == Token::WHITESPACE || t[0] == '.') {
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t = t.next();
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continue;
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}
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t.string(tmpstr, sizeof(tmpstr));
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unsigned long tmpc = 0;
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Genode::ascii_to(tmpstr, &tmpc, 10);
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ipb[cnt] = tmpc & 0xFF;
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t = t.next();
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if (cnt == 4)
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break;
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cnt++;
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}
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if (cnt == 4) {
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ip_addr.addr[0] = ipb[0];
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ip_addr.addr[1] = ipb[1];
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ip_addr.addr[2] = ipb[2];
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ip_addr.addr[3] = ipb[3];
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}
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return ip_addr;
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}
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const Ipv4_packet::Ipv4_address Ipv4_packet::CURRENT((Genode::uint8_t)0x00);
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const Ipv4_packet::Ipv4_address Ipv4_packet::BROADCAST((Genode::uint8_t)0xFF);
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