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Added intercept build file and sources
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11 changed files with 746 additions and 5 deletions
93
netcon/utils.c
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93
netcon/utils.c
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/*
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* ZeroTier One - Network Virtualization Everywhere
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* Copyright (C) 2011-2015 ZeroTier, 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 General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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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 General 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
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* --
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*
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* ZeroTier may be used and distributed under the terms of the GPLv3, which
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* are available at: http://www.gnu.org/licenses/gpl-3.0.html
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*
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* If you would like to embed ZeroTier into a commercial application or
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* redistribute it in a modified binary form, please contact ZeroTier Networks
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* LLC. Start here: http://www.zerotier.com/
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*/
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void get_path_from_pid(char* dest, int pid)
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{
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char ppath[50];
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sprintf(ppath, "/proc/%d/exe", pid);
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if (readlink (ppath, dest, 50) != -1){
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}
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}
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void print_ip(int ip)
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{
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unsigned char bytes[4];
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bytes[0] = ip & 0xFF;
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bytes[1] = (ip >> 8) & 0xFF;
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bytes[2] = (ip >> 16) & 0xFF;
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bytes[3] = (ip >> 24) & 0xFF;
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printf("%d.%d.%d.%d\n", bytes[0], bytes[1], bytes[2], bytes[3]);
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//return buf;
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}
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/* --- */
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#ifdef NETCON_SERVICE
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ip_addr_t convert_ip(struct sockaddr_in * addr)
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{
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ip_addr_t conn_addr;
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struct sockaddr_in *ipv4 = addr;
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short a = ip4_addr1(&(ipv4->sin_addr));
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short b = ip4_addr2(&(ipv4->sin_addr));
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short c = ip4_addr3(&(ipv4->sin_addr));
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short d = ip4_addr4(&(ipv4->sin_addr));
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IP4_ADDR(&conn_addr, a,b,c,d);
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return conn_addr;
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}
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ip_addr_t ip_addr_sin(register struct sockaddr_in *sin) {
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ip_addr_t ip;
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*((struct sockaddr_in*) &ip) = *sin;
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return ip;
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}
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#endif
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/* --- */
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#ifdef NETCON_INTERCEPT
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typedef unsigned char u8_t;
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#define ip4_addr1(ipaddr) (((u8_t*)(ipaddr))[0])
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#define ip4_addr2(ipaddr) (((u8_t*)(ipaddr))[1])
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#define ip4_addr3(ipaddr) (((u8_t*)(ipaddr))[2])
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#define ip4_addr4(ipaddr) (((u8_t*)(ipaddr))[3])
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int is_local(struct sockaddr_in* addr)
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{
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struct sockaddr_in *ipv4 = addr;
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short a = ip4_addr1(&(ipv4->sin_addr));
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short b = ip4_addr2(&(ipv4->sin_addr));
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short c = ip4_addr3(&(ipv4->sin_addr));
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short d = ip4_addr4(&(ipv4->sin_addr));
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return (a==127 && b == 0 && c == 0 && d == 1);
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}
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#endif
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