mirror of
https://github.com/zerotier/ZeroTierOne.git
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109 lines
3.0 KiB
C
109 lines
3.0 KiB
C
/*
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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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#include <stdio.h>
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#include <netdb.h>
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#include <stdarg.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <unistd.h>
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#include <arpa/inet.h>
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#include <netinet/in.h>
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#include <pthread.h>
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#include <fcntl.h>
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#include <sys/syscall.h>
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#ifndef _COMMON_H
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#define _COMMON_H 1
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#define DEBUG_LEVEL 0
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#define MSG_WARNING 4
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#define MSG_ERROR 1 // Errors
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#define MSG_INFO 2 // Information which is generally useful to any user
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#define MSG_DEBUG 3 // Information which is only useful to someone debugging
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#define MSG_DEBUG_EXTRA 4 // If nothing in your world makes sense
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#ifdef NETCON_INTERCEPT
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void print_addr(struct sockaddr *addr)
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{
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char *s = NULL;
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switch(addr->sa_family) {
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case AF_INET: {
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struct sockaddr_in *addr_in = (struct sockaddr_in *)addr;
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s = malloc(INET_ADDRSTRLEN);
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inet_ntop(AF_INET, &(addr_in->sin_addr), s, INET_ADDRSTRLEN);
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break;
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}
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case AF_INET6: {
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struct sockaddr_in6 *addr_in6 = (struct sockaddr_in6 *)addr;
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s = malloc(INET6_ADDRSTRLEN);
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inet_ntop(AF_INET6, &(addr_in6->sin6_addr), s, INET6_ADDRSTRLEN);
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break;
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}
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default:
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break;
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}
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fprintf(stderr, "IP address: %s\n", s);
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free(s);
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}
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#endif
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#ifdef NETCON_SERVICE
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namespace ZeroTier {
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#endif
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void dwr(int level, const char *fmt, ... )
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{
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if(level > DEBUG_LEVEL)
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return;
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int saveerr;
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saveerr = errno;
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va_list ap;
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va_start(ap, fmt);
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#ifdef VERBOSE // So we can cut out some clutter in the strace output while debugging
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char timestring[20];
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time_t timestamp;
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timestamp = time(NULL);
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strftime(timestring, sizeof(timestring), "%H:%M:%S", localtime(×tamp));
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pid_t tid = syscall(SYS_gettid);
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fprintf(stderr, "%s [tid=%7d] ", timestring, tid);
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#endif
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vfprintf(stderr, fmt, ap);
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fflush(stderr);
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errno = saveerr;
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va_end(ap);
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}
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#ifdef NETCON_SERVICE
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}
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#endif
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#endif
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