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/* Copyright (c) 2010, Jacob Appelbaum, Steven J. Murdoch.
* Copyright (c) 2010, The Tor Project, Inc. */
/* See LICENSE for licensing information */
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <arpa/inet.h>
#include "tor-fw-helper.h"
#include "tor-fw-helper-natpmp.h"
int
tor_natpmp_add_tcp_mapping(tor_fw_options_t *tor_fw_options)
{
int r = 0;
int x = 0;
int sav_errno;
int protocol = NATPMP_PROTOCOL_TCP;
int lease = NATPMP_DEFAULT_LEASE;
natpmp_t natpmp;
natpmpresp_t response;
fd_set fds;
struct timeval timeout;
if (tor_fw_options->verbose)
fprintf(stdout, "V: natpmp init...\n");
initnatpmp(&natpmp);
if (tor_fw_options->verbose)
fprintf(stdout, "V: sending natpmp portmapping request...\n");
r = sendnewportmappingrequest(&natpmp, protocol,
tor_fw_options->internal_port,
tor_fw_options->external_port,
lease);
fprintf(stdout, "tor-fw-helper: NAT-PMP sendnewportmappingrequest returned"
" %d (%s)\n", r, r==12?"SUCCESS":"FAILED");
do {
FD_ZERO(&fds);
FD_SET(natpmp.s, &fds);
getnatpmprequesttimeout(&natpmp, &timeout);
select(FD_SETSIZE, &fds, NULL, NULL, &timeout);
if (tor_fw_options->verbose)
fprintf(stdout, "V: attempting to readnatpmpreponseorretry...\n");
r = readnatpmpresponseorretry(&natpmp, &response);
sav_errno = errno;
if (r<0 && r!=NATPMP_TRYAGAIN)
{
fprintf(stderr, "E: readnatpmpresponseorretry failed %d\n", r);
fprintf(stderr, "E: errno=%d '%s'\n", sav_errno,
strerror(sav_errno));
}
} while ( r == NATPMP_TRYAGAIN );
if (r == NATPMP_SUCCESS) {
fprintf(stdout, "tor-fw-helper: NAT-PMP mapped public port %hu to"
" localport %hu liftime %u\n",
response.pnu.newportmapping.mappedpublicport,
response.pnu.newportmapping.privateport,
response.pnu.newportmapping.lifetime);
}
x = closenatpmp(&natpmp);
if (tor_fw_options->verbose)
fprintf(stdout, "V: closing natpmp socket: %d\n", x);
return r;
}
int
tor_natpmp_fetch_public_ip(tor_fw_options_t *tor_fw_options)
{
int r = 0;
int x = 0;
int sav_errno;
natpmp_t natpmp;
natpmpresp_t response;
struct timeval timeout;
fd_set fds;
r = initnatpmp(&natpmp);
if (tor_fw_options->verbose)
fprintf(stdout, "V: NAT-PMP init: %d\n", r);
r = sendpublicaddressrequest(&natpmp);
fprintf(stdout, "tor-fw-helper: NAT-PMP sendpublicaddressrequest returned"
" %d (%s)\n", r, r==2?"SUCCESS":"FAILED");
do {
FD_ZERO(&fds);
FD_SET(natpmp.s, &fds);
getnatpmprequesttimeout(&natpmp, &timeout);
select(FD_SETSIZE, &fds, NULL, NULL, &timeout);
if (tor_fw_options->verbose)
fprintf(stdout, "V: NAT-PMP attempting to read reponse...\n");
r = readnatpmpresponseorretry(&natpmp, &response);
sav_errno = errno;
if (tor_fw_options->verbose)
fprintf(stdout, "V: NAT-PMP readnatpmpresponseorretry returned"
" %d\n", r);
if ( r < 0 && r != NATPMP_TRYAGAIN)
{
fprintf(stderr, "E: NAT-PMP readnatpmpresponseorretry failed %d\n",
r);
fprintf(stderr, "E: NAT-PMP errno=%d '%s'\n", sav_errno,
strerror(sav_errno));
}
} while ( r == NATPMP_TRYAGAIN );
if (r != 0)
{
fprintf(stderr, "E: NAT-PMP It appears that something went wrong:"
" %d\n", r);
return r;
}
fprintf(stdout, "tor-fw-helper: ExternalIPAddress = %s\n",
inet_ntoa(response.pnu.publicaddress.addr));
x = closenatpmp(&natpmp);
if (tor_fw_options->verbose)
{
fprintf(stdout, "V: result = %u\n", r);
fprintf(stdout, "V: type = %u\n", response.type);
fprintf(stdout, "V: resultcode = %u\n", response.resultcode);
fprintf(stdout, "V: epoch = %u\n", response.epoch);
fprintf(stdout, "V: closing natpmp result: %d\n", r);
}
return r;
}
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