mirror of
https://github.com/zerotier/ZeroTierOne.git
synced 2024-12-21 05:53:09 +00:00
245 lines
7.2 KiB
C
245 lines
7.2 KiB
C
/* $Id: natpmpc.c,v 1.13 2012/08/21 17:23:38 nanard Exp $ */
|
|
/* libnatpmp
|
|
Copyright (c) 2007-2011, Thomas BERNARD
|
|
All rights reserved.
|
|
|
|
Redistribution and use in source and binary forms, with or without
|
|
modification, are permitted provided that the following conditions are met:
|
|
|
|
* Redistributions of source code must retain the above copyright notice,
|
|
this list of conditions and the following disclaimer.
|
|
* Redistributions in binary form must reproduce the above copyright notice,
|
|
this list of conditions and the following disclaimer in the documentation
|
|
and/or other materials provided with the distribution.
|
|
* The name of the author may not be used to endorse or promote products
|
|
derived from this software without specific prior written permission.
|
|
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
|
|
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
#include <stdio.h>
|
|
#include <errno.h>
|
|
#include <string.h>
|
|
#if defined(_MSC_VER)
|
|
#if _MSC_VER >= 1400
|
|
#define strcasecmp _stricmp
|
|
#else
|
|
#define strcasecmp stricmp
|
|
#endif
|
|
#else
|
|
#include <unistd.h>
|
|
#endif
|
|
#ifdef WIN32
|
|
#include <winsock2.h>
|
|
#else
|
|
#include <netinet/in.h>
|
|
#include <arpa/inet.h>
|
|
#endif
|
|
#include "natpmp.h"
|
|
|
|
void usage(FILE * out, const char * argv0)
|
|
{
|
|
fprintf(out, "Usage :\n");
|
|
fprintf(out, " %s [options]\n", argv0);
|
|
fprintf(out, "\tdisplay the public IP address.\n");
|
|
fprintf(out, " %s -h\n", argv0);
|
|
fprintf(out, "\tdisplay this help screen.\n");
|
|
fprintf(out, " %s [options] -a <public port> <private port> <protocol> [lifetime]\n", argv0);
|
|
fprintf(out, "\tadd a port mapping.\n");
|
|
fprintf(out, "\nOption available :\n");
|
|
fprintf(out, " -g ipv4address\n");
|
|
fprintf(out, "\tforce the gateway to be used as destination for NAT-PMP commands.\n");
|
|
fprintf(out, "\n In order to remove a mapping, set it with a lifetime of 0 seconds.\n");
|
|
fprintf(out, " To remove all mappings for your machine, use 0 as private port and lifetime.\n");
|
|
}
|
|
|
|
/* sample code for using libnatpmp */
|
|
int main(int argc, char * * argv)
|
|
{
|
|
natpmp_t natpmp;
|
|
natpmpresp_t response;
|
|
int r;
|
|
int sav_errno;
|
|
struct timeval timeout;
|
|
fd_set fds;
|
|
int i;
|
|
int protocol = 0;
|
|
uint16_t privateport = 0;
|
|
uint16_t publicport = 0;
|
|
uint32_t lifetime = 3600;
|
|
int command = 0;
|
|
int forcegw = 0;
|
|
in_addr_t gateway = 0;
|
|
struct in_addr gateway_in_use;
|
|
|
|
#ifdef WIN32
|
|
WSADATA wsaData;
|
|
int nResult = WSAStartup(MAKEWORD(2,2), &wsaData);
|
|
if(nResult != NO_ERROR)
|
|
{
|
|
fprintf(stderr, "WSAStartup() failed.\n");
|
|
return -1;
|
|
}
|
|
#endif
|
|
|
|
/* argument parsing */
|
|
for(i=1; i<argc; i++) {
|
|
if(argv[i][0] == '-') {
|
|
switch(argv[i][1]) {
|
|
case 'h':
|
|
usage(stdout, argv[0]);
|
|
return 0;
|
|
case 'g':
|
|
forcegw = 1;
|
|
if(argc < i + 1) {
|
|
fprintf(stderr, "Not enough arguments for option -%c\n", argv[i][1]);
|
|
return 1;
|
|
}
|
|
gateway = inet_addr(argv[++i]);
|
|
break;
|
|
case 'a':
|
|
command = 'a';
|
|
if(argc < i + 4) {
|
|
fprintf(stderr, "Not enough arguments for option -%c\n", argv[i][1]);
|
|
return 1;
|
|
}
|
|
i++;
|
|
if(1 != sscanf(argv[i], "%hu", &publicport)) {
|
|
fprintf(stderr, "%s is not a correct 16bits unsigned integer\n", argv[i]);
|
|
return 1;
|
|
}
|
|
i++;
|
|
if(1 != sscanf(argv[i], "%hu", &privateport)) {
|
|
fprintf(stderr, "%s is not a correct 16bits unsigned integer\n", argv[i]);
|
|
return 1;
|
|
}
|
|
i++;
|
|
if(0 == strcasecmp(argv[i], "tcp"))
|
|
protocol = NATPMP_PROTOCOL_TCP;
|
|
else if(0 == strcasecmp(argv[i], "udp"))
|
|
protocol = NATPMP_PROTOCOL_UDP;
|
|
else {
|
|
fprintf(stderr, "%s is not a valid protocol\n", argv[i]);
|
|
return 1;
|
|
}
|
|
if(argc > i + 1) {
|
|
if(1 != sscanf(argv[i+1], "%u", &lifetime)) {
|
|
fprintf(stderr, "%s is not a correct 32bits unsigned integer\n", argv[i]);
|
|
} else {
|
|
i++;
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
fprintf(stderr, "Unknown option %s\n", argv[i]);
|
|
usage(stderr, argv[0]);
|
|
return 1;
|
|
}
|
|
} else {
|
|
fprintf(stderr, "Unknown option %s\n", argv[i]);
|
|
usage(stderr, argv[0]);
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
/* initnatpmp() */
|
|
r = initnatpmp(&natpmp, forcegw, gateway);
|
|
printf("initnatpmp() returned %d (%s)\n", r, r?"FAILED":"SUCCESS");
|
|
if(r<0)
|
|
return 1;
|
|
|
|
gateway_in_use.s_addr = natpmp.gateway;
|
|
printf("using gateway : %s\n", inet_ntoa(gateway_in_use));
|
|
|
|
/* sendpublicaddressrequest() */
|
|
r = sendpublicaddressrequest(&natpmp);
|
|
printf("sendpublicaddressrequest returned %d (%s)\n",
|
|
r, r==2?"SUCCESS":"FAILED");
|
|
if(r<0)
|
|
return 1;
|
|
|
|
do {
|
|
FD_ZERO(&fds);
|
|
FD_SET(natpmp.s, &fds);
|
|
getnatpmprequesttimeout(&natpmp, &timeout);
|
|
r = select(FD_SETSIZE, &fds, NULL, NULL, &timeout);
|
|
if(r<0) {
|
|
fprintf(stderr, "select()");
|
|
return 1;
|
|
}
|
|
r = readnatpmpresponseorretry(&natpmp, &response);
|
|
sav_errno = errno;
|
|
printf("readnatpmpresponseorretry returned %d (%s)\n",
|
|
r, r==0?"OK":(r==NATPMP_TRYAGAIN?"TRY AGAIN":"FAILED"));
|
|
if(r<0 && r!=NATPMP_TRYAGAIN) {
|
|
#ifdef ENABLE_STRNATPMPERR
|
|
fprintf(stderr, "readnatpmpresponseorretry() failed : %s\n",
|
|
strnatpmperr(r));
|
|
#endif
|
|
fprintf(stderr, " errno=%d '%s'\n",
|
|
sav_errno, strerror(sav_errno));
|
|
}
|
|
} while(r==NATPMP_TRYAGAIN);
|
|
if(r<0)
|
|
return 1;
|
|
|
|
/* TODO : check that response.type == 0 */
|
|
printf("Public IP address : %s\n", inet_ntoa(response.pnu.publicaddress.addr));
|
|
printf("epoch = %u\n", response.epoch);
|
|
|
|
if(command == 'a') {
|
|
/* sendnewportmappingrequest() */
|
|
r = sendnewportmappingrequest(&natpmp, protocol,
|
|
privateport, publicport,
|
|
lifetime);
|
|
printf("sendnewportmappingrequest returned %d (%s)\n",
|
|
r, r==12?"SUCCESS":"FAILED");
|
|
if(r < 0)
|
|
return 1;
|
|
|
|
do {
|
|
FD_ZERO(&fds);
|
|
FD_SET(natpmp.s, &fds);
|
|
getnatpmprequesttimeout(&natpmp, &timeout);
|
|
select(FD_SETSIZE, &fds, NULL, NULL, &timeout);
|
|
r = readnatpmpresponseorretry(&natpmp, &response);
|
|
printf("readnatpmpresponseorretry returned %d (%s)\n",
|
|
r, r==0?"OK":(r==NATPMP_TRYAGAIN?"TRY AGAIN":"FAILED"));
|
|
} while(r==NATPMP_TRYAGAIN);
|
|
if(r<0) {
|
|
#ifdef ENABLE_STRNATPMPERR
|
|
fprintf(stderr, "readnatpmpresponseorretry() failed : %s\n",
|
|
strnatpmperr(r));
|
|
#endif
|
|
return 1;
|
|
}
|
|
|
|
printf("Mapped public port %hu protocol %s to local port %hu "
|
|
"liftime %u\n",
|
|
response.pnu.newportmapping.mappedpublicport,
|
|
response.type == NATPMP_RESPTYPE_UDPPORTMAPPING ? "UDP" :
|
|
(response.type == NATPMP_RESPTYPE_TCPPORTMAPPING ? "TCP" :
|
|
"UNKNOWN"),
|
|
response.pnu.newportmapping.privateport,
|
|
response.pnu.newportmapping.lifetime);
|
|
printf("epoch = %u\n", response.epoch);
|
|
}
|
|
|
|
r = closenatpmp(&natpmp);
|
|
printf("closenatpmp() returned %d (%s)\n", r, r==0?"SUCCESS":"FAILED");
|
|
if(r<0)
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|