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miniupnp/miniupnpd/miniupnpd.c
Sven Auhagen 2c9a645b10 NFTables: Add backwards compatibility for IPv4 NAT 
NFtables uses the INET table for NAT which combines IPv4 and IPv6.
Older systems might not have this option and use the ip table instead.

This adds a flag to fall back to the ip table style.

Signed-Off-By: Sven Auhagen <sven.auhagen@voleatech.de>
2024-03-04 06:18:41 +01:00

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/* $Id: miniupnpd.c,v 1.259 2024/01/17 00:05:14 nanard Exp $ */
/* vim: tabstop=4 shiftwidth=4 noexpandtab
* MiniUPnP project
* http://miniupnp.free.fr/ or https://miniupnp.tuxfamily.org/
* (c) 2006-2024 Thomas Bernard
* This software is subject to the conditions detailed
* in the LICENCE file provided within the distribution */
#include "config.h"
/* Experimental support for NFQUEUE interfaces */
#ifdef ENABLE_NFQUEUE
/* apt-get install libnetfilter-queue-dev */
#include <netinet/ip.h>
#include <netinet/udp.h>
#if 0
#include <linux/netfilter_ipv4.h> /* Defines verdicts (NF_ACCEPT, etc) */
#endif
#include <linux/netfilter.h>
#include <libnetfilter_queue/libnetfilter_queue.h>
#include <linux/netfilter/nfnetlink_queue.h>
#endif
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <stdio.h>
#include <ctype.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <fcntl.h>
#include <sys/file.h>
#include <syslog.h>
#include <sys/time.h>
#include <time.h>
#include <signal.h>
#include <errno.h>
#include <sys/param.h>
#if defined(sun)
#include <kstat.h>
#elif !defined(__linux__)
/* for BSD's sysctl */
#include <sys/sysctl.h>
#endif
#ifdef HAS_LIBCAP
#include <sys/capability.h>
#endif
#ifdef HAS_LIBCAP_NG
#include <cap-ng.h>
#endif
/* unix sockets */
#ifdef USE_MINIUPNPDCTL
#include <sys/un.h>
#endif
#ifdef ENABLE_HTTPS
#include <openssl/crypto.h>
#endif
#ifdef DYNAMIC_OS_VERSION
#include <sys/utsname.h>
#endif
#ifdef TOMATO
#include <sys/stat.h>
#endif /* TOMATO */
#include "macros.h"
#include "upnpglobalvars.h"
#include "upnphttp.h"
#include "upnpdescgen.h"
#include "miniupnpdpath.h"
#include "getifaddr.h"
#include "upnpsoap.h"
#include "options.h"
#include "minissdp.h"
#include "upnpredirect.h"
#include "upnppinhole.h"
#include "upnpstun.h"
#include "miniupnpdtypes.h"
#include "daemonize.h"
#include "upnpevents.h"
#include "asyncsendto.h"
#ifdef ENABLE_NATPMP
#include "natpmp.h"
#ifdef ENABLE_PCP
#include "pcpserver.h"
#else
#define PCP_MAX_LEN 32
#endif
#endif
#include "commonrdr.h"
#include "upnputils.h"
#ifdef USE_IFACEWATCHER
#include "ifacewatcher.h"
#endif
#ifdef ENABLE_UPNPPINHOLE
#ifdef USE_NETFILTER
void init_iptpinhole(void);
#endif
#endif
#ifdef USE_MINIUPNPDCTL
struct ctlelem {
int socket;
LIST_ENTRY(ctlelem) entries;
};
#endif /* USE_MINIUPNPDCTL */
#ifdef ENABLE_NFQUEUE
/* globals */
static struct nfq_handle *nfqHandle;
static struct sockaddr_in ssdp;
/* prototypes */
static int nfqueue_cb( struct nfq_q_handle *qh, struct nfgenmsg *nfmsg, struct nfq_data *nfa, void *data) ;
int identify_ip_protocol (char *payload);
int get_udp_dst_port (char *payload);
#endif /* ENABLE_NFQUEUE */
/* variables used by signals */
static volatile sig_atomic_t quitting = 0;
volatile sig_atomic_t should_send_public_address_change_notif = 0;
#if !defined(TOMATO) && defined(ENABLE_LEASEFILE) && defined(LEASEFILE_USE_REMAINING_TIME)
volatile sig_atomic_t should_rewrite_leasefile = 0;
#endif /* !TOMATO && ENABLE_LEASEFILE && LEASEFILE_USE_REMAINING_TIME */
#ifdef TOMATO
#if 1
/* Tomato specific code */
static volatile sig_atomic_t gotusr2 = 0;
static void
sigusr2(int sig)
{
gotusr2 = 1;
}
static void
tomato_save(const char *fname)
{
unsigned short eport;
unsigned short iport;
unsigned int leaseduration;
unsigned int timestamp;
char proto[4];
char iaddr[32];
char desc[64];
char rhost[32];
int n;
FILE *f;
int t;
char tmp[128];
strcpy(tmp, "/etc/upnp/saveXXXXXX");
if ((t = mkstemp(tmp)) != -1)
{
if ((f = fdopen(t, "w")) != NULL)
{
n = 0;
while (upnp_get_redirection_infos_by_index(n, &eport, proto, &iport, iaddr, sizeof(iaddr), desc, sizeof(desc), rhost, sizeof(rhost), &leaseduration) == 0)
{
timestamp = (leaseduration > 0) ? time(NULL) + leaseduration : 0;
fprintf(f, "%s %u %s %u [%s] %u\n", proto, eport, iaddr, iport, desc, timestamp);
++n;
}
fclose(f);
rename(tmp, fname);
}
else
{
close(t);
}
unlink(tmp);
}
}
static void
tomato_load(void)
{
FILE *f;
char s[256];
unsigned short eport;
unsigned short iport;
unsigned int leaseduration;
unsigned int timestamp;
time_t current_time;
char proto[4];
char iaddr[32];
char *rhost;
char *a, *b;
if ((f = fopen("/etc/upnp/data", "r")) != NULL)
{
current_time = time(NULL);
s[sizeof(s) - 1] = 0;
while (fgets(s, sizeof(s) - 1, f)) {
if (sscanf(s, "%3s %hu %31s %hu [%*[^]]] %u", proto, &eport, iaddr, &iport, &timestamp) >= 4)
{
if (((a = strchr(s, '[')) != NULL) && ((b = strrchr(a, ']')) != NULL))
{
if (timestamp > 0)
{
if (timestamp > current_time)
leaseduration = timestamp - current_time;
else
continue;
}
else
{
leaseduration = 0; /* default value */
}
*b = 0;
rhost = NULL;
syslog(LOG_DEBUG, "Read redirection [%s] from file: %s port %hu to %s port %hu, timestamp: %u (%u)",
a + 1, proto, eport, iaddr, iport, timestamp, leaseduration);
upnp_redirect(rhost, eport, iaddr, iport, proto, a + 1, leaseduration);
}
}
}
fclose(f);
}
#ifdef ENABLE_NATPMP
#if 0
ScanNATPMPforExpiration();
#endif
#endif /* ENABLE_NATPMP */
unlink("/etc/upnp/load");
}
static void
tomato_delete(void)
{
FILE *f;
char s[128];
unsigned short eport;
unsigned short iport;
unsigned int leaseduration;
char proto[4];
char iaddr[32];
char desc[64];
char rhost[32];
int n;
if ((f = fopen("/etc/upnp/delete", "r")) != NULL)
{
s[sizeof(s) - 1] = 0;
while (fgets(s, sizeof(s) - 1, f))
{
if (sscanf(s, "%3s %hu", proto, &eport) == 2)
{
if (proto[0] == '*')
{
n = upnp_get_portmapping_number_of_entries();
while (--n >= 0)
{
if (upnp_get_redirection_infos_by_index(n, &eport, proto, &iport, iaddr, sizeof(iaddr), desc, sizeof(desc), rhost, sizeof(rhost), &leaseduration) == 0)
{
upnp_delete_redirection(eport, proto);
}
}
break;
}
else
{
upnp_delete_redirection(eport, proto);
}
}
}
fclose(f);
unlink("/etc/upnp/delete");
}
}
static void
tomato_helper(void)
{
struct stat st;
if (stat("/etc/upnp/delete", &st) == 0)
{
tomato_delete();
}
if (stat("/etc/upnp/load", &st) == 0)
{
tomato_load();
}
if (stat("/etc/upnp/save", &st) == 0)
{
tomato_save("/etc/upnp/data");
unlink("/etc/upnp/save");
}
if (stat("/etc/upnp/info", &st) == 0)
{
tomato_save("/etc/upnp/data.info");
unlink("/etc/upnp/info");
}
}
#endif /* 1 (tomato) */
#endif /* TOMATO */
/* OpenAndConfHTTPSocket() :
* setup the socket used to handle incoming HTTP connections. */
static int
#ifdef ENABLE_IPV6
OpenAndConfHTTPSocket(unsigned short * port, int ipv6)
#else
OpenAndConfHTTPSocket(unsigned short * port)
#endif
{
int s;
int i = 1;
#ifdef ENABLE_IPV6
struct sockaddr_in6 listenname6;
struct sockaddr_in listenname4;
#else
struct sockaddr_in listenname;
#endif
socklen_t listenname_len;
s = socket(
#ifdef ENABLE_IPV6
ipv6 ? PF_INET6 : PF_INET,
#else
PF_INET,
#endif
SOCK_STREAM, 0);
#ifdef ENABLE_IPV6
if(s < 0 && ipv6 && errno == EAFNOSUPPORT)
{
/* the system doesn't support IPV6 */
syslog(LOG_WARNING, "socket(PF_INET6, ...) failed with EAFNOSUPPORT, disabling IPv6");
SETFLAG(IPV6DISABLEDMASK);
ipv6 = 0;
/* Try again with IPv4 */
s = socket(PF_INET, SOCK_STREAM, 0);
}
#endif
if(s < 0)
{
syslog(LOG_ERR, "socket(http): %m");
return -1;
}
if(setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &i, sizeof(i)) < 0)
{
syslog(LOG_WARNING, "setsockopt(http, SO_REUSEADDR): %m");
}
#if 0
/* enable this to force IPV6 only for IPV6 socket.
* see http://www.ietf.org/rfc/rfc3493.txt section 5.3 */
if(setsockopt(s, IPPROTO_IPV6, IPV6_V6ONLY, &i, sizeof(i)) < 0)
{
syslog(LOG_WARNING, "setsockopt(http, IPV6_V6ONLY): %m");
}
#endif
if(!set_non_blocking(s))
{
syslog(LOG_WARNING, "set_non_blocking(http): %m");
}
#ifdef ENABLE_IPV6
if(ipv6)
{
memset(&listenname6, 0, sizeof(struct sockaddr_in6));
listenname6.sin6_family = AF_INET6;
listenname6.sin6_port = htons(*port);
listenname6.sin6_addr = ipv6_bind_addr;
listenname_len = sizeof(struct sockaddr_in6);
} else {
memset(&listenname4, 0, sizeof(struct sockaddr_in));
listenname4.sin_family = AF_INET;
listenname4.sin_port = htons(*port);
listenname4.sin_addr.s_addr = htonl(INADDR_ANY);
listenname_len = sizeof(struct sockaddr_in);
}
#else
memset(&listenname, 0, sizeof(struct sockaddr_in));
listenname.sin_family = AF_INET;
listenname.sin_port = htons(*port);
listenname.sin_addr.s_addr = htonl(INADDR_ANY);
listenname_len = sizeof(struct sockaddr_in);
#endif
#if defined(SO_BINDTODEVICE) && !defined(MULTIPLE_EXTERNAL_IP)
/* One and only one LAN interface */
if(lan_addrs.lh_first != NULL && lan_addrs.lh_first->list.le_next == NULL
&& lan_addrs.lh_first->ifname[0] != '\0')
{
if(setsockopt(s, SOL_SOCKET, SO_BINDTODEVICE,
lan_addrs.lh_first->ifname,
strlen(lan_addrs.lh_first->ifname)) < 0)
syslog(LOG_WARNING, "setsockopt(http, SO_BINDTODEVICE, %s): %m",
lan_addrs.lh_first->ifname);
}
#endif /* defined(SO_BINDTODEVICE) && !defined(MULTIPLE_EXTERNAL_IP) */
#ifdef ENABLE_IPV6
if(bind(s,
ipv6 ? (struct sockaddr *)&listenname6 : (struct sockaddr *)&listenname4,
listenname_len) < 0)
#else
if(bind(s, (struct sockaddr *)&listenname, listenname_len) < 0)
#endif
{
syslog(LOG_ERR, "bind(http): %m");
close(s);
return -1;
}
if(listen(s, 5) < 0)
{
syslog(LOG_ERR, "listen(http): %m");
close(s);
return -1;
}
if(*port == 0) {
#ifdef ENABLE_IPV6
if(ipv6) {
struct sockaddr_in6 sockinfo;
socklen_t len = sizeof(struct sockaddr_in6);
if (getsockname(s, (struct sockaddr *)&sockinfo, &len) < 0) {
syslog(LOG_ERR, "getsockname(): %m");
} else {
*port = ntohs(sockinfo.sin6_port);
}
} else {
#endif /* ENABLE_IPV6 */
struct sockaddr_in sockinfo;
socklen_t len = sizeof(struct sockaddr_in);
if (getsockname(s, (struct sockaddr *)&sockinfo, &len) < 0) {
syslog(LOG_ERR, "getsockname(): %m");
} else {
*port = ntohs(sockinfo.sin_port);
}
#ifdef ENABLE_IPV6
}
#endif /* ENABLE_IPV6 */
}
return s;
}
static struct upnphttp *
ProcessIncomingHTTP(int shttpl, const char * protocol)
{
int shttp;
socklen_t clientnamelen;
#ifdef ENABLE_IPV6
struct sockaddr_storage clientname;
clientnamelen = sizeof(struct sockaddr_storage);
#else
struct sockaddr_in clientname;
clientnamelen = sizeof(struct sockaddr_in);
#endif
shttp = accept(shttpl, (struct sockaddr *)&clientname, &clientnamelen);
if(shttp<0)
{
/* ignore EAGAIN, EWOULDBLOCK, EINTR, we just try again later */
if(errno != EAGAIN && errno != EWOULDBLOCK && errno != EINTR)
syslog(LOG_ERR, "accept(http): %m");
}
else
{
struct upnphttp * tmp = 0;
char addr_str[64];
sockaddr_to_string((struct sockaddr *)&clientname, addr_str, sizeof(addr_str));
#ifdef DEBUG
syslog(LOG_DEBUG, "%s connection from %s", protocol, addr_str);
#endif /* DEBUG */
if(get_lan_for_peer((struct sockaddr *)&clientname) == NULL)
{
/* The peer is not a LAN ! */
syslog(LOG_WARNING,
"%s peer %s is not from a LAN, closing the connection",
protocol, addr_str);
close(shttp);
}
else
{
/* Create a new upnphttp object and add it to
* the active upnphttp object list */
tmp = New_upnphttp(shttp);
if(tmp)
{
#ifdef ENABLE_IPV6
if(clientname.ss_family == AF_INET)
{
tmp->clientaddr = ((struct sockaddr_in *)&clientname)->sin_addr;
}
else if(clientname.ss_family == AF_INET6)
{
struct sockaddr_in6 * addr = (struct sockaddr_in6 *)&clientname;
if(IN6_IS_ADDR_V4MAPPED(&addr->sin6_addr))
{
memcpy(&tmp->clientaddr,
&addr->sin6_addr.s6_addr[12],
4);
}
else
{
tmp->ipv6 = 1;
memcpy(&tmp->clientaddr_v6,
&addr->sin6_addr,
sizeof(struct in6_addr));
}
}
#else
tmp->clientaddr = clientname.sin_addr;
#endif
memcpy(tmp->clientaddr_str, addr_str, sizeof(tmp->clientaddr_str));
return tmp;
}
else
{
syslog(LOG_ERR, "New_upnphttp() failed");
close(shttp);
}
}
}
return NULL;
}
#ifdef ENABLE_NFQUEUE
int identify_ip_protocol(char *payload) {
return payload[9];
}
/*
* This function returns the destination port of the captured packet UDP
*/
int get_udp_dst_port(char *payload) {
char *pkt_data_ptr = NULL;
pkt_data_ptr = payload + sizeof(struct ip);
/* Cast the UDP Header from the raw packet */
struct udphdr *udp = (struct udphdr *) pkt_data_ptr;
/* get the dst port of the packet */
return(ntohs(udp->dest));
}
static int
OpenAndConfNFqueue(){
struct nfq_q_handle *myQueue;
struct nfnl_handle *netlinkHandle;
int fd = 0, e = 0;
inet_pton(AF_INET, "239.255.255.250", &(ssdp.sin_addr));
/* Get a queue connection handle from the module */
if (!(nfqHandle = nfq_open())) {
syslog(LOG_ERR, "Error in nfq_open(): %m");
return -1;
}
/* Unbind the handler from processing any IP packets
Not totally sure why this is done, or if it's necessary... */
if ((e = nfq_unbind_pf(nfqHandle, AF_INET)) < 0) {
syslog(LOG_ERR, "Error in nfq_unbind_pf(): %m");
return -1;
}
/* Bind this handler to process IP packets... */
if (nfq_bind_pf(nfqHandle, AF_INET) < 0) {
syslog(LOG_ERR, "Error in nfq_bind_pf(): %m");
return -1;
}
/* Install a callback on queue -Q */
if (!(myQueue = nfq_create_queue(nfqHandle, nfqueue, &nfqueue_cb, NULL))) {
syslog(LOG_ERR, "Error in nfq_create_queue(): %m");
return -1;
}
/* Turn on packet copy mode */
if (nfq_set_mode(myQueue, NFQNL_COPY_PACKET, 0xffff) < 0) {
syslog(LOG_ERR, "Error setting packet copy mode (): %m");
return -1;
}
netlinkHandle = nfq_nfnlh(nfqHandle);
fd = nfnl_fd(netlinkHandle);
return fd;
}
static int nfqueue_cb(
struct nfq_q_handle *qh,
struct nfgenmsg *nfmsg,
struct nfq_data *nfa,
void *data) {
char *pkt;
struct nfqnl_msg_packet_hdr *ph;
ph = nfq_get_msg_packet_hdr(nfa);
if ( ph ) {
int id = 0, size = 0;
id = ntohl(ph->packet_id);
size = nfq_get_payload(nfa, &pkt);
struct ip *iph = (struct ip *) pkt;
int id_protocol = identify_ip_protocol(pkt);
int dport = get_udp_dst_port(pkt);
int x = sizeof (struct ip) + sizeof (struct udphdr);
/* packets we are interested in are UDP multicast to 239.255.255.250:1900
* and start with a data string M-SEARCH
*/
if ( (dport == 1900) && (id_protocol == IPPROTO_UDP)
&& (ssdp.sin_addr.s_addr == iph->ip_dst.s_addr) ) {
/* get the index that the packet came in on */
u_int32_t idx = nfq_get_indev(nfa);
int i = 0;
for ( ;i < n_nfqix ; i++) {
if ( nfqix[i] == idx ) {
struct udphdr *udp = (struct udphdr *) (pkt + sizeof(struct ip));
char *dd = pkt + x;
struct sockaddr_in sendername;
sendername.sin_family = AF_INET;
sendername.sin_port = udp->source;
sendername.sin_addr.s_addr = iph->ip_src.s_addr;
/* printf("pkt found %s\n",dd);*/
ProcessSSDPData (sudp, dd, size - x,
&sendername, -1, (unsigned short) 5555);
}
}
}
nfq_set_verdict(qh, id, NF_ACCEPT, 0, NULL);
} else {
syslog(LOG_ERR,"nfq_get_msg_packet_hdr failed");
return 1;
/* from nfqueue source: 0 = ok, >0 = soft error, <0 hard error */
}
return 0;
}
static void ProcessNFQUEUE(int fd){
char buf[4096];
socklen_t len_r;
struct sockaddr_in sendername;
len_r = sizeof(struct sockaddr_in);
int res = recvfrom(fd, buf, sizeof(buf), 0,
(struct sockaddr *)&sendername, &len_r);
nfq_handle_packet(nfqHandle, buf, res);
}
#endif
/* Functions used to communicate with miniupnpdctl */
#ifdef USE_MINIUPNPDCTL
static int
OpenAndConfCtlUnixSocket(const char * path)
{
struct sockaddr_un localun;
int s;
s = socket(AF_UNIX, SOCK_STREAM, 0);
localun.sun_family = AF_UNIX;
strncpy(localun.sun_path, path,
sizeof(localun.sun_path));
if(bind(s, (struct sockaddr *)&localun,
sizeof(struct sockaddr_un)) < 0)
{
syslog(LOG_ERR, "bind(sctl): %m");
close(s);
s = -1;
}
else if(listen(s, 5) < 0)
{
syslog(LOG_ERR, "listen(sctl): %m");
close(s);
s = -1;
}
return s;
}
static void
write_upnphttp_details(int fd, struct upnphttp * e)
{
char buffer[256];
int len;
write(fd, "HTTP :\n", 7);
while(e)
{
len = snprintf(buffer, sizeof(buffer),
"%d %d %s req_buf=%p(%dbytes) res_buf=%p(%dbytes alloc)\n",
e->socket, e->state, e->HttpVer,
e->req_buf, e->req_buflen,
e->res_buf, e->res_buf_alloclen);
write(fd, buffer, len);
e = e->entries.le_next;
}
}
static void
write_ctlsockets_list(int fd, struct ctlelem * e)
{
char buffer[256];
int len;
write(fd, "CTL :\n", 6);
while(e)
{
len = snprintf(buffer, sizeof(buffer),
"struct ctlelem: socket=%d\n", e->socket);
write(fd, buffer, len);
e = e->entries.le_next;
}
}
#ifndef DISABLE_CONFIG_FILE
static void
write_option_list(int fd)
{
char buffer[256];
int len;
unsigned int i;
write(fd, "Options :\n", 10);
for(i=0; i<num_options; i++)
{
len = snprintf(buffer, sizeof(buffer),
"opt=%02d %s\n",
ary_options[i].id, ary_options[i].value);
write(fd, buffer, len);
}
}
#endif
static void
write_command_line(int fd, int argc, char * * argv)
{
char buffer[256];
int len;
int i;
write(fd, "Command Line :\n", 15);
for(i=0; i<argc; i++)
{
len = snprintf(buffer, sizeof(buffer),
"argv[%02d]='%s'\n",
i, argv[i]);
write(fd, buffer, len);
}
}
#endif
/* Handler for the SIGTERM signal (kill)
* SIGINT is also handled */
static void
sigterm(int sig)
{
UNUSED(sig);
/*int save_errno = errno; */
/*signal(sig, SIG_IGN);*/ /* Ignore this signal while we are quitting */
/* Note : isn't it useless ? */
#if 0
/* calling syslog() is forbidden in signal handler according to
* signal(3) */
syslog(LOG_NOTICE, "received signal %d, good-bye", sig);
#endif
quitting = 1;
/*errno = save_errno;*/
}
/* Handler for the SIGUSR1 signal indicating public IP address change. */
static void
sigusr1(int sig)
{
UNUSED(sig);
#if 0
/* calling syslog() is forbidden in signal handler according to
* signal(3) */
syslog(LOG_INFO, "received signal %d, public IP address change", sig);
#endif
should_send_public_address_change_notif = 1;
}
#if !defined(TOMATO) && defined(ENABLE_LEASEFILE) && defined(LEASEFILE_USE_REMAINING_TIME)
/* Handler for the SIGUSR2 signal to request rewrite of lease_file */
static void
sigusr2(int sig)
{
UNUSED(sig);
should_rewrite_leasefile = 1;
}
#endif /* !TOMATO && ENABLE_LEASEFILE && LEASEFILE_USE_REMAINING_TIME */
/* record the startup time, for returning uptime */
static void
set_startup_time(void)
{
startup_time = upnp_time();
#ifdef USE_TIME_AS_BOOTID
if(upnp_bootid == 1) {
upnp_bootid = (unsigned int)time(NULL);
/* from UDA v1.1 :
* A convenient mechanism is to set this field value to the time
* that the device sends its initial announcement, expressed as
* seconds elapsed since midnight January 1, 1970; */
}
#endif /* USE_TIME_AS_BOOTID */
if(GETFLAG(SYSUPTIMEMASK))
{
/* use system uptime instead of daemon uptime */
#if defined(__linux__)
unsigned long uptime = 0;
FILE * f = fopen("/proc/uptime", "r");
if(f == NULL)
{
syslog(LOG_ERR, "fopen(\"/proc/uptime\") : %m");
}
else
{
if(fscanf(f, "%lu", &uptime) != 1)
{
syslog(LOG_ERR, "fscanf(\"/proc/uptime\") : %m");
}
else
{
syslog(LOG_INFO, "system uptime is %lu seconds", uptime);
}
fclose(f);
startup_time -= uptime;
}
#elif defined(SOLARIS_KSTATS)
kstat_ctl_t *kc;
kc = kstat_open();
if(kc != NULL)
{
kstat_t *ksp;
ksp = kstat_lookup(kc, "unix", 0, "system_misc");
if(ksp && (kstat_read(kc, ksp, NULL) != -1))
{
void *ptr = kstat_data_lookup(ksp, "boot_time");
if(ptr)
memcpy(&startup_time, ptr, sizeof(startup_time));
else
syslog(LOG_ERR, "cannot find boot_time kstat");
}
else
syslog(LOG_ERR, "cannot open kstats for unix/0/system_misc: %m");
kstat_close(kc);
}
#else
struct timeval boottime;
size_t size = sizeof(boottime);
int name[2] = { CTL_KERN, KERN_BOOTTIME };
if(sysctl(name, 2, &boottime, &size, NULL, 0) < 0)
{
syslog(LOG_ERR, "sysctl(\"kern.boottime\") failed");
}
else
{
startup_time = boottime.tv_sec;
}
#endif
}
}
/* structure containing variables used during "main loop"
* that are filled during the init */
struct runtime_vars {
/* LAN IP addresses for SSDP traffic and HTTP */
/* moved to global vars */
int port; /* HTTP Port */
#ifdef ENABLE_HTTPS
int https_port; /* HTTPS Port */
#endif
int notify_interval; /* seconds between SSDP announces */
/* unused rules cleaning related variables : */
int clean_ruleset_threshold; /* threshold for removing unused rules */
int clean_ruleset_interval; /* (minimum) interval between checks. 0=disabled */
};
/* parselanaddr()
* parse address with mask
* ex: 192.168.1.1/24 or 192.168.1.1/255.255.255.0
* When MULTIPLE_EXTERNAL_IP is enabled, the IP address of the
* external interface associated with the lan subnet follows.
* ex : 192.168.1.1/24 81.21.41.11
*
* Can also use the interface name (ie eth0)
*
* return value :
* 0 : ok
* -1 : error */
static int
parselanaddr(struct lan_addr_s * lan_addr, const char * str, int debug_flag)
{
const char * p;
unsigned int n;
char tmp[16];
memset(lan_addr, 0, sizeof(struct lan_addr_s));
p = str;
while(*p && *p != '/' && !isspace(*p))
p++;
n = p - str;
if(!isdigit(str[0]) && n < (int)sizeof(lan_addr->ifname))
{
/* not starting with a digit : suppose it is an interface name */
memcpy(lan_addr->ifname, str, n);
lan_addr->ifname[n] = '\0';
if(getifaddr(lan_addr->ifname, lan_addr->str, sizeof(lan_addr->str),
&lan_addr->addr, &lan_addr->mask) < 0) {
#ifdef ENABLE_IPV6
fprintf(stderr, "interface \"%s\" has no IPv4 address\n", str);
syslog(LOG_NOTICE, "interface \"%s\" has no IPv4 address\n", str);
lan_addr->str[0] = '\0';
lan_addr->addr.s_addr = htonl(0x00000000u);
lan_addr->mask.s_addr = htonl(0xffffffffu);
#else /* ENABLE_IPV6 */
goto parselan_error;
#endif /* ENABLE_IPV6 */
}
/*printf("%s => %s\n", lan_addr->ifname, lan_addr->str);*/
}
else
{
if(n>15)
goto parselan_error;
memcpy(lan_addr->str, str, n);
lan_addr->str[n] = '\0';
if(!inet_aton(lan_addr->str, &lan_addr->addr))
goto parselan_error;
}
if(!addr_is_reserved(&lan_addr->addr)) {
INIT_PRINT_ERR("Error: LAN address contains public IP address : %s\n", lan_addr->str);
INIT_PRINT_ERR("Public IP address can be configured via ext_ip= option\n");
INIT_PRINT_ERR("LAN address should contain private address, e.g. from 192.168. block\n");
INIT_PRINT_ERR("Listening on public IP address is a security issue\n");
return -1;
}
if(*p == '/')
{
const char * q = ++p;
while(*p && isdigit(*p))
p++;
if(*p=='.')
{
/* parse mask in /255.255.255.0 format */
while(*p && (*p=='.' || isdigit(*p)))
p++;
n = p - q;
if(n >= sizeof(tmp))
goto parselan_error;
memcpy(tmp, q, n);
tmp[n] = '\0';
if(!inet_aton(tmp, &lan_addr->mask))
goto parselan_error;
}
else
{
/* it is a /24 format */
int nbits = atoi(q);
if(nbits > 32 || nbits < 0)
goto parselan_error;
lan_addr->mask.s_addr = htonl(nbits ? (0xffffffffu << (32 - nbits)) : 0);
}
}
else if(lan_addr->mask.s_addr == 0)
{
/* by default, networks are /24 */
lan_addr->mask.s_addr = htonl(0xffffff00u);
}
#ifdef MULTIPLE_EXTERNAL_IP
/* skip spaces */
while(*p && isspace(*p))
p++;
if(*p) {
/* parse the exteral IP address to associate with this subnet */
n = 0;
while(p[n] && !isspace(*p))
n++;
if(n<=15) {
memcpy(lan_addr->ext_ip_str, p, n);
lan_addr->ext_ip_str[n] = '\0';
if(!inet_aton(lan_addr->ext_ip_str, &lan_addr->ext_ip_addr)) {
/* error */
INIT_PRINT_ERR("Error parsing address : %s\n", lan_addr->ext_ip_str);
return -1;
}
if(addr_is_reserved(&lan_addr->ext_ip_addr)) {
/* error */
INIT_PRINT_ERR("Error: option ext_ip address contains reserved / private address : %s\n", lan_addr->ext_ip_str);
return -1;
}
}
}
#else
while(*p) {
/* skip spaces */
while(*p && isspace(*p))
p++;
if(*p) {
unsigned int index;
n = 0;
while(p[n] && !isspace(p[n]) && n < sizeof(tmp)) {
tmp[n] = p[n];
n++;
}
if(n >= sizeof(tmp)) {
INIT_PRINT_ERR("Cannot parse '%s'\n", p);
break;
}
tmp[n] = '\0';
index = if_nametoindex(tmp);
if(index == 0) {
fprintf(stderr, "Cannot get index for network interface %s\n",
tmp);
syslog(LOG_WARNING, "Cannot get index for network interface %s\n",
tmp);
} else {
lan_addr->add_indexes |= (1UL << (index - 1));
}
p += n;
}
}
#endif
if(lan_addr->ifname[0] != '\0') {
lan_addr->index = if_nametoindex(lan_addr->ifname);
if(lan_addr->index == 0) {
fprintf(stderr, "Cannot get index for network interface %s\n",
lan_addr->ifname);
syslog(LOG_WARNING, "Cannot get index for network interface %s\n",
lan_addr->ifname);
}
} else {
#ifdef ENABLE_IPV6
INIT_PRINT_ERR("Error: please specify LAN network interface by name instead of IPv4 address : %s\n", str);
return -1;
#else
syslog(LOG_NOTICE, "it is advised to use network interface name instead of %s", str);
#endif
}
return 0;
parselan_error:
INIT_PRINT_ERR("Error parsing address/mask (or interface name) : %s\n", str);
return -1;
}
static char ext_addr_str[INET_ADDRSTRLEN];
int update_ext_ip_addr_from_stun(int init)
{
struct in_addr if_addr, ext_addr;
int restrictive_nat;
char if_addr_str[INET_ADDRSTRLEN];
syslog(LOG_INFO, "STUN: Performing with host=%s and port=%u ...", ext_stun_host, (unsigned)ext_stun_port);
if (getifaddr(ext_if_name, if_addr_str, INET_ADDRSTRLEN, &if_addr, NULL) < 0) {
syslog(LOG_ERR, "STUN: Cannot get IP address for ext interface %s", ext_if_name);
return 1;
}
if (perform_stun(ext_if_name, if_addr_str, ext_stun_host, ext_stun_port, &ext_addr, &restrictive_nat) != 0) {
syslog(LOG_ERR, "STUN: Performing STUN failed: %s", strerror(errno));
return 1;
}
if (!inet_ntop(AF_INET, &ext_addr, ext_addr_str, sizeof(ext_addr_str))) {
syslog(LOG_ERR, "STUN: Function inet_ntop for IP address returned by STUN failed: %s", strerror(errno));
return 1;
}
if ((init || disable_port_forwarding) && !restrictive_nat) {
if (addr_is_reserved(&if_addr))
syslog(LOG_INFO, "STUN: ext interface %s with IP address %s is now behind unrestricted full-cone NAT 1:1 with public IP address %s and firewall does not block incoming connections set by miniupnpd", ext_if_name, if_addr_str, ext_addr_str);
else
syslog(LOG_INFO, "STUN: ext interface %s has now public IP address %s and firewall does not block incoming connections set by miniupnpd", ext_if_name, if_addr_str);
syslog(LOG_INFO, "Port forwarding is now enabled");
} else if ((init || !disable_port_forwarding) && restrictive_nat) {
if (addr_is_reserved(&if_addr)) {
syslog(LOG_WARNING, "STUN: ext interface %s with private IP address %s is now behind restrictive or symmetric NAT with public IP address %s which does not support port forwarding", ext_if_name, if_addr_str, ext_addr_str);
syslog(LOG_WARNING, "NAT on upstream router blocks incoming connections set by miniupnpd");
syslog(LOG_WARNING, "Turn off NAT on upstream router or change it to full-cone NAT 1:1 type");
} else {
syslog(LOG_WARNING, "STUN: ext interface %s has now public IP address %s but firewall filters incoming connections set by miniunnpd", ext_if_name, if_addr_str);
syslog(LOG_WARNING, "Check configuration of firewall on local machine and also on upstream router");
}
syslog(LOG_WARNING, "Port forwarding is now disabled");
} else {
syslog(LOG_INFO, "STUN: ... done");
}
use_ext_ip_addr = ext_addr_str;
disable_port_forwarding = restrictive_nat;
return 0;
}
/* fill uuidvalue_wan and uuidvalue_wcd based on uuidvalue_igd */
void complete_uuidvalues(void)
{
size_t len;
len = strlen(uuidvalue_igd);
memcpy(uuidvalue_wan, uuidvalue_igd, len+1);
switch(uuidvalue_wan[len-1]) {
case '9':
uuidvalue_wan[len-1] = 'a';
break;
case 'f':
uuidvalue_wan[len-1] = '0';
break;
default:
uuidvalue_wan[len-1]++;
}
memcpy(uuidvalue_wcd, uuidvalue_wan, len+1);
switch(uuidvalue_wcd[len-1]) {
case '9':
uuidvalue_wcd[len-1] = 'a';
break;
case 'f':
uuidvalue_wcd[len-1] = '0';
break;
default:
uuidvalue_wcd[len-1]++;
}
}
/* init phase :
* 1) read configuration file
* 2) read command line arguments
* 3) daemonize
* 4) open syslog
* 5) check and write pid file
* 6) set startup time stamp
* 7) compute presentation URL
* 8) set signal handlers
* 9) init random generator (srandom())
* 10) init redirection engine
* 11) reload mapping from leasefile */
static int
init(int argc, char * * argv, struct runtime_vars * v)
{
int i;
#ifndef NO_BACKGROUND_NO_PIDFILE
int pid;
#endif
int debug_flag = 0;
int verbosity_level = 0; /* for determining setlogmask() */
int openlog_option;
struct in_addr addr;
struct sigaction sa;
/*const char * logfilename = 0;*/
const char * presurl = 0;
#ifndef DISABLE_CONFIG_FILE
int options_flag = 0;
const char * optionsfile = DEFAULT_CONFIG;
#endif /* DISABLE_CONFIG_FILE */
struct lan_addr_s * lan_addr;
struct lan_addr_s * lan_addr2;
/* only print usage if -h is used */
for(i=1; i<argc; i++)
{
if(0 == strcmp(argv[i], "-h") || 0 == strcmp(argv[i], "--help"))
goto print_usage;
if(0 == strcmp(argv[i], "-d"))
debug_flag = 1;
}
openlog_option = LOG_PID|LOG_CONS;
if(debug_flag)
{
openlog_option |= LOG_PERROR; /* also log on stderr */
}
openlog("miniupnpd", openlog_option, LOG_MINIUPNPD);
#ifndef DISABLE_CONFIG_FILE
/* first check if "-f" option is used */
for(i=2; i<argc; i++)
{
if(0 == strcmp(argv[i-1], "-f"))
{
optionsfile = argv[i];
options_flag = 1;
break;
}
}
#endif /* DISABLE_CONFIG_FILE */
/* set initial values */
SETFLAG(ENABLEUPNPMASK | SECUREMODEMASK); /* UPnP and secure mode */
#ifdef ENABLE_IPV6
ipv6_bind_addr = in6addr_any;
#endif /* ENABLE_IPV6 */
LIST_INIT(&lan_addrs);
v->port = -1;
#ifdef ENABLE_HTTPS
v->https_port = -1;
#endif
v->notify_interval = 30; /* seconds between SSDP announces */
v->clean_ruleset_threshold = 20;
v->clean_ruleset_interval = 0; /* interval between ruleset check. 0=disabled */
#ifndef DISABLE_CONFIG_FILE
/* read options file first since
* command line arguments have final say */
if(readoptionsfile(optionsfile, debug_flag) < 0)
{
/* only error if file exists or using -f */
if(access(optionsfile, F_OK) == 0 || options_flag)
{
INIT_PRINT_ERR("Error reading configuration file %s\n", optionsfile);
return 1;
}
}
else
{
for(i=0; i<(int)num_options; i++)
{
switch(ary_options[i].id)
{
case UPNPEXT_IFNAME:
ext_if_name = ary_options[i].value;
break;
#ifdef ENABLE_IPV6
case UPNPEXT_IFNAME6:
ext_if_name6 = ary_options[i].value;
break;
#endif
case UPNPEXT_IP:
use_ext_ip_addr = ary_options[i].value;
break;
case UPNPEXT_PERFORM_STUN:
if(strcmp(ary_options[i].value, "yes") == 0)
SETFLAG(PERFORMSTUNMASK);
break;
case UPNPEXT_STUN_HOST:
ext_stun_host = ary_options[i].value;
break;
case UPNPEXT_STUN_PORT:
ext_stun_port = atoi(ary_options[i].value);
break;
case UPNPLISTENING_IP:
lan_addr = (struct lan_addr_s *) malloc(sizeof(struct lan_addr_s));
if (lan_addr == NULL)
{
INIT_PRINT_ERR("malloc(sizeof(struct lan_addr_s)): %m");
return 1;
}
if(parselanaddr(lan_addr, ary_options[i].value, debug_flag) != 0)
{
INIT_PRINT_ERR("can't parse \"%s\" as a valid "
#ifndef ENABLE_IPV6
"LAN address or "
#endif
"interface name\n", ary_options[i].value);
free(lan_addr);
return 1;
}
LIST_INSERT_HEAD(&lan_addrs, lan_addr, list);
break;
#ifdef ENABLE_IPV6
case UPNPIPV6_LISTENING_IP:
if (inet_pton(AF_INET6, ary_options[i].value, &ipv6_bind_addr) < 1)
{
INIT_PRINT_ERR("can't parse \"%s\" as valid IPv6 listening address", ary_options[i].value);
return 1;
}
break;
case UPNPIPV6_DISABLE:
if(strcmp(ary_options[i].value, "yes") == 0)
SETFLAG(IPV6DISABLEDMASK);
break;
#endif /* ENABLE_IPV6 */
case UPNPPORT:
v->port = atoi(ary_options[i].value);
break;
#ifdef ENABLE_HTTPS
case UPNPHTTPSPORT:
v->https_port = atoi(ary_options[i].value);
break;
#endif
case UPNPBITRATE_UP:
upstream_bitrate = strtoul(ary_options[i].value, 0, 0);
break;
case UPNPBITRATE_DOWN:
downstream_bitrate = strtoul(ary_options[i].value, 0, 0);
break;
case UPNPPRESENTATIONURL:
presurl = ary_options[i].value;
break;
#ifdef ENABLE_MANUFACTURER_INFO_CONFIGURATION
case UPNPFRIENDLY_NAME:
strncpy(friendly_name, ary_options[i].value, FRIENDLY_NAME_MAX_LEN);
friendly_name[FRIENDLY_NAME_MAX_LEN-1] = '\0';
break;
case UPNPMANUFACTURER_NAME:
strncpy(manufacturer_name, ary_options[i].value, MANUFACTURER_NAME_MAX_LEN);
manufacturer_name[MANUFACTURER_NAME_MAX_LEN-1] = '\0';
break;
case UPNPMANUFACTURER_URL:
strncpy(manufacturer_url, ary_options[i].value, MANUFACTURER_URL_MAX_LEN);
manufacturer_url[MANUFACTURER_URL_MAX_LEN-1] = '\0';
break;
case UPNPMODEL_NAME:
strncpy(model_name, ary_options[i].value, MODEL_NAME_MAX_LEN);
model_name[MODEL_NAME_MAX_LEN-1] = '\0';
break;
case UPNPMODEL_DESCRIPTION:
strncpy(model_description, ary_options[i].value, MODEL_DESCRIPTION_MAX_LEN);
model_description[MODEL_DESCRIPTION_MAX_LEN-1] = '\0';
break;
case UPNPMODEL_URL:
strncpy(model_url, ary_options[i].value, MODEL_URL_MAX_LEN);
model_url[MODEL_URL_MAX_LEN-1] = '\0';
break;
#endif /* ENABLE_MANUFACTURER_INFO_CONFIGURATION */
#ifdef USE_NETFILTER
case UPNPTABLENAME:
set_rdr_name(RDR_TABLE_NAME, ary_options[i].value);
break;
case UPNPNATTABLENAME:
set_rdr_name(RDR_NAT_TABLE_NAME, ary_options[i].value);
break;
case UPNPFORWARDCHAIN:
set_rdr_name(RDR_FORWARD_CHAIN_NAME, ary_options[i].value);
break;
case UPNPNATCHAIN:
set_rdr_name(RDR_NAT_PREROUTING_CHAIN_NAME, ary_options[i].value);
break;
case UPNPNATPOSTCHAIN:
set_rdr_name(RDR_NAT_POSTROUTING_CHAIN_NAME, ary_options[i].value);
break;
case UPNPNFFAMILYSPLIT:
set_rdr_name(RDR_FAMILY_SPLIT, ary_options[i].value);
break;
#endif /* USE_NETFILTER */
case UPNPNOTIFY_INTERVAL:
v->notify_interval = atoi(ary_options[i].value);
break;
case UPNPSYSTEM_UPTIME:
if(strcmp(ary_options[i].value, "yes") == 0)
SETFLAG(SYSUPTIMEMASK); /*sysuptime = 1;*/
break;
#if defined(USE_PF) || defined(USE_IPF)
case UPNPPACKET_LOG:
if(strcmp(ary_options[i].value, "yes") == 0)
SETFLAG(LOGPACKETSMASK); /*logpackets = 1;*/
break;
#endif /* defined(USE_PF) || defined(USE_IPF) */
case UPNPUUID:
strncpy(uuidvalue_igd+5, ary_options[i].value,
strlen(uuidvalue_igd+5) + 1);
complete_uuidvalues();
break;
case UPNPSERIAL:
strncpy(serialnumber, ary_options[i].value, SERIALNUMBER_MAX_LEN);
serialnumber[SERIALNUMBER_MAX_LEN-1] = '\0';
break;
case UPNPMODEL_NUMBER:
strncpy(modelnumber, ary_options[i].value, MODELNUMBER_MAX_LEN);
modelnumber[MODELNUMBER_MAX_LEN-1] = '\0';
break;
case UPNPCLEANTHRESHOLD:
v->clean_ruleset_threshold = atoi(ary_options[i].value);
break;
case UPNPCLEANINTERVAL:
v->clean_ruleset_interval = atoi(ary_options[i].value);
break;
#ifdef USE_PF
case UPNPANCHOR:
anchor_name = ary_options[i].value;
break;
case UPNPQUEUE:
queue = ary_options[i].value;
break;
case UPNPTAG:
tag = ary_options[i].value;
break;
#endif /* USE_PF */
#ifdef ENABLE_NATPMP
/* enable both NAT-PMP and PCP (if enabled) */
case UPNPENABLENATPMP:
if(strcmp(ary_options[i].value, "yes") == 0)
SETFLAG(ENABLENATPMPMASK);
else
if(atoi(ary_options[i].value))
SETFLAG(ENABLENATPMPMASK);
break;
#endif /* ENABLE_NATPMP */
#ifdef ENABLE_PCP
case UPNPPCPMINLIFETIME:
min_lifetime = atoi(ary_options[i].value);
/* RFC6887 15. the minimum value SHOULD be 120 seconds */
if (min_lifetime < 120 ) {
min_lifetime = 120;
}
break;
case UPNPPCPMAXLIFETIME:
max_lifetime = atoi(ary_options[i].value);
/* maximum is 24 hours */
if (max_lifetime > 86400 ) {
max_lifetime = 86400;
}
break;
case UPNPPCPALLOWTHIRDPARTY:
if(strcmp(ary_options[i].value, "yes") == 0)
SETFLAG(PCP_ALLOWTHIRDPARTYMASK);
break;
#endif /* ENABLE_PCP */
#ifdef PF_ENABLE_FILTER_RULES
case UPNPQUICKRULES:
if(strcmp(ary_options[i].value, "no") == 0)
SETFLAG(PFNOQUICKRULESMASK);
break;
#endif /* PF_ENABLE_FILTER_RULES */
case UPNPENABLE:
if(strcmp(ary_options[i].value, "yes") != 0)
CLEARFLAG(ENABLEUPNPMASK);
break;
case UPNPSECUREMODE:
if (strcmp(ary_options[i].value, "no") == 0)
CLEARFLAG(SECUREMODEMASK);
break;
#ifdef ENABLE_LEASEFILE
case UPNPLEASEFILE:
lease_file = ary_options[i].value;
break;
#ifdef ENABLE_UPNPPINHOLE
case UPNPLEASEFILE6:
lease_file6 = ary_options[i].value;
break;
#endif /* ENABLE_UPNPPINHOLE */
#endif /* ENABLE_LEASEFILE */
case UPNPMINISSDPDSOCKET:
minissdpdsocketpath = ary_options[i].value;
break;
#ifdef IGD_V2
case UPNPFORCEIGDDESCV1:
if (strcmp(ary_options[i].value, "yes") == 0)
SETFLAG(FORCEIGDDESCV1MASK);
else if (strcmp(ary_options[i].value, "no") != 0 ) {
INIT_PRINT_ERR("force_igd_desc_v1 can only be yes or no\n");
return 1;
}
break;
#endif
default:
INIT_PRINT_ERR("Unknown option in file %s\n",
optionsfile);
}
}
#ifdef ENABLE_PCP
/* if lifetimes are inverse */
if (min_lifetime >= max_lifetime) {
INIT_PRINT_ERR("Minimum lifetime (%lu) is greater than or equal to maximum lifetime (%lu).\n", min_lifetime, max_lifetime);
INIT_PRINT_ERR("Check your configuration file.\n");
return 1;
}
#endif /* ENABLE_PCP */
if (GETFLAG(PERFORMSTUNMASK) && !ext_stun_host) {
INIT_PRINT_ERR("You must specify ext_stun_host= when ext_perform_stun=yes\n");
return 1;
}
}
#endif /* DISABLE_CONFIG_FILE */
/* command line arguments processing */
for(i=1; i<argc; i++)
{
if(argv[i][0]!='-')
{
INIT_PRINT_ERR("Unknown option: %s\n", argv[i]);
goto print_usage;
}
else switch(argv[i][1])
{
case 'v':
{
int j;
for (j = 1; argv[i][j] != '\0'; j++)
verbosity_level++;
}
break;
#ifdef ENABLE_IPV6
case '4':
SETFLAG(IPV6DISABLEDMASK);
break;
#endif
#ifdef IGD_V2
case '1':
SETFLAG(FORCEIGDDESCV1MASK);
break;
#endif
case 'b':
if(i+1 < argc) {
upnp_bootid = (unsigned int)strtoul(argv[++i], NULL, 10);
} else {
INIT_PRINT_ERR("Option -%c takes one argument.\n", argv[i][1]);
goto print_usage;
}
break;
case 'o':
if(i+1 < argc) {
i++;
if (0 == strncasecmp(argv[i], "STUN:", 5)) {
char *ptr;
SETFLAG(PERFORMSTUNMASK);
ext_stun_host = argv[i] + 5;
ptr = strchr(ext_stun_host, ':');
if (ptr) {
ext_stun_port = atoi(ptr+1);
*ptr = 0;
}
} else
use_ext_ip_addr = argv[i];
} else {
INIT_PRINT_ERR("Option -%c takes one argument.\n", argv[i][1]);
goto print_usage;
}
break;
case 't':
if(i+1 < argc) {
v->notify_interval = atoi(argv[++i]);
} else {
INIT_PRINT_ERR("Option -%c takes one argument.\n", argv[i][1]);
goto print_usage;
}
break;
case 'r':
if(i+1 < argc) {
v->clean_ruleset_interval = atoi(argv[++i]);
} else {
INIT_PRINT_ERR("Option -%c takes one argument.\n", argv[i][1]);
goto print_usage;
}
break;
case 'u':
if(i+1 < argc) {
strncpy(uuidvalue_igd+5, argv[++i], strlen(uuidvalue_igd+5) + 1);
complete_uuidvalues();
} else {
INIT_PRINT_ERR("Option -%c takes one argument.\n", argv[i][1]);
goto print_usage;
}
break;
#ifdef ENABLE_MANUFACTURER_INFO_CONFIGURATION
case 'z':
if(i+1 < argc) {
strncpy(friendly_name, argv[++i], FRIENDLY_NAME_MAX_LEN);
} else {
INIT_PRINT_ERR("Option -%c takes one argument.\n", argv[i][1]);
goto print_usage;
}
friendly_name[FRIENDLY_NAME_MAX_LEN-1] = '\0';
break;
#endif /* ENABLE_MANUFACTURER_INFO_CONFIGURATION */
case 's':
if(i+1 < argc) {
strncpy(serialnumber, argv[++i], SERIALNUMBER_MAX_LEN);
} else {
INIT_PRINT_ERR("Option -%c takes one argument.\n", argv[i][1]);
goto print_usage;
}
serialnumber[SERIALNUMBER_MAX_LEN-1] = '\0';
break;
case 'm':
if(i+1 < argc) {
strncpy(modelnumber, argv[++i], MODELNUMBER_MAX_LEN);
} else {
INIT_PRINT_ERR("Option -%c takes one argument.\n", argv[i][1]);
goto print_usage;
}
modelnumber[MODELNUMBER_MAX_LEN-1] = '\0';
break;
#ifdef ENABLE_NATPMP
case 'N':
/* enable both NAT-PMP and PCP (if enabled) */
SETFLAG(ENABLENATPMPMASK);
break;
#endif /* ENABLE_NATPMP */
case 'U':
/*sysuptime = 1;*/
SETFLAG(SYSUPTIMEMASK);
break;
/*case 'l':
logfilename = argv[++i];
break;*/
#if defined(USE_PF) || defined(USE_IPF)
case 'L':
/*logpackets = 1;*/
SETFLAG(LOGPACKETSMASK);
break;
#endif /* defined(USE_PF) || defined(USE_IPF) */
case 'S':
/* -S0 to disable secure mode, for backward compatibility
* -S is ignored */
if (argv[i][2] == '0') {
CLEARFLAG(SECUREMODEMASK);
} else if (argv[i][2] != '\0') {
INIT_PRINT_ERR("Uses -S0 to disable secure mode.\n");
goto print_usage;
}
break;
case 'i':
if(i+1 < argc) {
ext_if_name = argv[++i];
} else {
INIT_PRINT_ERR("Option -%c takes one argument.\n", argv[i][1]);
goto print_usage;
}
break;
#ifdef ENABLE_IPV6
case 'I':
if(i+1 < argc) {
ext_if_name6 = argv[++i];
} else {
INIT_PRINT_ERR("Option -%c takes one argument.\n", argv[i][1]);
goto print_usage;
}
break;
#endif
#ifdef USE_PF
case 'q':
if(i+1 < argc) {
queue = argv[++i];
} else {
INIT_PRINT_ERR("Option -%c takes one argument.\n", argv[i][1]);
goto print_usage;
}
break;
case 'T':
if(i+1 < argc) {
tag = argv[++i];
} else {
INIT_PRINT_ERR("Option -%c takes one argument.\n", argv[i][1]);
goto print_usage;
}
break;
#endif /* USE_PF */
case 'p':
if(i+1 < argc) {
v->port = atoi(argv[++i]);
} else {
INIT_PRINT_ERR("Option -%c takes one argument.\n", argv[i][1]);
goto print_usage;
}
break;
#ifdef ENABLE_HTTPS
case 'H':
if(i+1 < argc) {
v->https_port = atoi(argv[++i]);
} else {
INIT_PRINT_ERR("Option -%c takes one argument.\n", argv[i][1]);
goto print_usage;
}
break;
#endif /* ENABLE_HTTPS */
#ifdef ENABLE_NFQUEUE
case 'Q':
if(i+1<argc) {
nfqueue = atoi(argv[++i]);
} else {
INIT_PRINT_ERR("Option -%c takes one argument.\n", argv[i][1]);
goto print_usage;
}
break;
case 'n':
if (i+1 < argc) {
i++;
if(n_nfqix < MAX_LAN_ADDR) {
nfqix[n_nfqix++] = if_nametoindex(argv[i]);
} else {
INIT_PRINT_ERR( "Too many nfq interfaces. Ignoring %s\n", argv[i]);
}
} else {
INIT_PRINT_ERR("Option -%c takes one argument.\n", argv[i][1]);
goto print_usage;
}
break;
#endif /* ENABLE_NFQUEUE */
#ifndef NO_BACKGROUND_NO_PIDFILE
case 'P':
if(i+1 < argc)
pidfilename = argv[++i];
else {
INIT_PRINT_ERR("Option -%c takes one argument.\n", argv[i][1]);
goto print_usage;
}
break;
#endif
case 'd': /* discarding */
break;
case 'w':
if(i+1 < argc)
presurl = argv[++i];
else {
INIT_PRINT_ERR("Option -%c takes one argument.\n", argv[i][1]);
goto print_usage;
}
break;
case 'B':
if(i+2<argc) {
downstream_bitrate = strtoul(argv[++i], 0, 0);
upstream_bitrate = strtoul(argv[++i], 0, 0);
} else {
INIT_PRINT_ERR("Option -%c takes two argument.\n", argv[i][1]);
goto print_usage;
}
break;
case 'a':
#ifndef MULTIPLE_EXTERNAL_IP
if(i+1 < argc)
{
i++;
lan_addr = (struct lan_addr_s *) malloc(sizeof(struct lan_addr_s));
if (lan_addr == NULL)
{
INIT_PRINT_ERR("malloc(sizeof(struct lan_addr_s)): %m");
return 1;
}
if(parselanaddr(lan_addr, argv[i], debug_flag) != 0)
{
INIT_PRINT_ERR("can't parse \"%s\" as a valid "
#ifndef ENABLE_IPV6
"LAN address or "
#endif /* #ifndef ENABLE_IPV6 */
"interface name\n", argv[i]);
free(lan_addr);
return 1;
}
/* check if we already have this address */
for(lan_addr2 = lan_addrs.lh_first; lan_addr2 != NULL; lan_addr2 = lan_addr2->list.le_next)
{
if (0 == strncmp(lan_addr2->str, lan_addr->str, 15))
break;
}
if (lan_addr2 == NULL)
LIST_INSERT_HEAD(&lan_addrs, lan_addr, list);
} else {
INIT_PRINT_ERR("Option -%c takes one argument.\n", argv[i][1]);
goto print_usage;
}
#else /* #ifndef MULTIPLE_EXTERNAL_IP */
if(i+2 < argc)
{
char *val = calloc((strlen(argv[i+1]) + strlen(argv[i+2]) + 2), sizeof(char));
if (val == NULL)
{
INIT_PRINT_ERR("memory allocation error for listen address storage\n");
return 1;
}
sprintf(val, "%s %s", argv[i+1], argv[i+2]);
lan_addr = (struct lan_addr_s *) malloc(sizeof(struct lan_addr_s));
if (lan_addr == NULL)
{
INIT_PRINT_ERR("malloc(sizeof(struct lan_addr_s)): %m");
free(val);
return 1;
}
if(parselanaddr(lan_addr, val, debug_flag) != 0)
{
INIT_PRINT_ERR("can't parse \"%s\" as a valid LAN address or interface name\n", val);
free(lan_addr);
free(val);
return 1;
}
/* check if we already have this address */
for(lan_addr2 = lan_addrs.lh_first; lan_addr2 != NULL; lan_addr2 = lan_addr2->list.le_next)
{
if (0 == strncmp(lan_addr2->str, lan_addr->str, 15))
break;
}
if (lan_addr2 == NULL)
LIST_INSERT_HEAD(&lan_addrs, lan_addr, list);
free(val);
i+=2;
} else {
INIT_PRINT_ERR("Option -%c takes one argument.\n", argv[i][1]);
goto print_usage;
}
#endif /* #ifndef MULTIPLE_EXTERNAL_IP */
break;
case 'A':
if(i+1 < argc) {
void * tmp;
tmp = realloc(upnppermlist, sizeof(struct upnpperm) * (num_upnpperm+1));
if(tmp == NULL) {
INIT_PRINT_ERR("memory allocation error for permission\n");
return 1;
} else {
upnppermlist = tmp;
if(read_permission_line(upnppermlist + num_upnpperm, argv[++i]) >= 0) {
num_upnpperm++;
} else {
INIT_PRINT_ERR("Permission rule parsing error :\n%s\n", argv[i]);
return 1;
}
}
} else {
INIT_PRINT_ERR("Option -%c takes one argument.\n", argv[i][1]);
goto print_usage;
}
break;
case 'f':
i++; /* discarding, the config file is already read */
break;
default:
INIT_PRINT_ERR("Unknown option: %s\n", argv[i]);
goto print_usage;
}
}
if(!ext_if_name || !lan_addrs.lh_first) {
/* bad configuration */
if(!ext_if_name)
INIT_PRINT_ERR("Error: Option -i missing and ext_ifname is not set in config file\n");
if (!lan_addrs.lh_first)
INIT_PRINT_ERR("Error: Option -a missing and listening_ip is not set in config file\n");
goto print_usage;
}
/* IPv6 ifname is defaulted to same as IPv4 */
#ifdef ENABLE_IPV6
if(!ext_if_name6)
ext_if_name6 = ext_if_name;
#endif
if (use_ext_ip_addr && GETFLAG(PERFORMSTUNMASK)) {
INIT_PRINT_ERR("Error: options ext_ip= and ext_perform_stun=yes cannot be specified together\n");
return 1;
}
if (use_ext_ip_addr) {
if (inet_pton(AF_INET, use_ext_ip_addr, &addr) != 1) {
INIT_PRINT_ERR("Error: option ext_ip contains invalid address %s\n", use_ext_ip_addr);
return 1;
}
if (addr_is_reserved(&addr)) {
INIT_PRINT_ERR("Error: option ext_ip contains reserved / private address %s, not public routable\n", use_ext_ip_addr);
return 1;
}
}
#ifndef NO_BACKGROUND_NO_PIDFILE
if(debug_flag)
{
pid = getpid();
}
else
{
#ifdef USE_DAEMON
if(daemon(0, 0)<0) {
perror("daemon()");
}
pid = getpid();
#else
pid = daemonize();
#endif
}
#endif
if(!debug_flag)
{
switch (verbosity_level)
{
case 0:
/* speed things up and ignore LOG_INFO and LOG_DEBUG */
setlogmask(LOG_UPTO(LOG_NOTICE));
break;
case 1:
/* ignore LOG_DEBUG */
setlogmask(LOG_UPTO(LOG_INFO));
break;
case 2:
setlogmask(LOG_UPTO(LOG_DEBUG));
}
}
#ifndef NO_BACKGROUND_NO_PIDFILE
if(checkforrunning(pidfilename) < 0)
{
syslog(LOG_ERR, "MiniUPnPd is already running. EXITING");
return 1;
}
#endif
#ifdef TOMATO
syslog(LOG_NOTICE, "version " MINIUPNPD_VERSION " started");
#endif /* TOMATO */
set_startup_time();
/* presentation url */
if(presurl)
{
strncpy(presentationurl, presurl, PRESENTATIONURL_MAX_LEN);
presentationurl[PRESENTATIONURL_MAX_LEN-1] = '\0';
}
else
{
snprintf(presentationurl, PRESENTATIONURL_MAX_LEN,
"http://%s/", lan_addrs.lh_first->str);
/*"http://%s:%d/", lan_addrs.lh_first->str, 80);*/
}
/* set signal handler */
memset(&sa, 0, sizeof(struct sigaction));
sa.sa_handler = sigterm;
if(sigaction(SIGTERM, &sa, NULL) < 0)
{
syslog(LOG_ERR, "Failed to set %s handler. EXITING", "SIGTERM");
return 1;
}
if(sigaction(SIGINT, &sa, NULL) < 0)
{
syslog(LOG_ERR, "Failed to set %s handler. EXITING", "SIGINT");
return 1;
}
#ifdef TOMATO
sa.sa_handler = sigusr2;
sigaction(SIGUSR2, &sa, NULL);
if(signal(SIGPIPE, SIG_IGN) == SIG_ERR)
#else /* TOMATO */
sa.sa_handler = SIG_IGN;
if(sigaction(SIGPIPE, &sa, NULL) < 0)
#endif /* TOMATO */
{
syslog(LOG_ERR, "Failed to ignore SIGPIPE signals");
}
sa.sa_handler = sigusr1;
if(sigaction(SIGUSR1, &sa, NULL) < 0)
{
syslog(LOG_NOTICE, "Failed to set %s handler", "SIGUSR1");
}
#if !defined(TOMATO) && defined(ENABLE_LEASEFILE) && defined(LEASEFILE_USE_REMAINING_TIME)
sa.sa_handler = sigusr2;
if(sigaction(SIGUSR2, &sa, NULL) < 0)
{
syslog(LOG_NOTICE, "Failed to set %s handler", "SIGUSR2");
}
#endif /* !TOMATO && ENABLE_LEASEFILE && LEASEFILE_USE_REMAINING_TIME */
/* initialize random number generator */
srandom((unsigned int)time(NULL));
#ifdef RANDOMIZE_URLS
snprintf(random_url, RANDOM_URL_MAX_LEN, "%08lx", random());
#endif /* RANDOMIZE_URLS */
/* initialize redirection engine (and pinholes) */
if(init_redirect() < 0)
{
syslog(LOG_ERR, "Failed to init redirection engine. EXITING");
return 1;
}
#ifdef ENABLE_UPNPPINHOLE
#ifdef USE_NETFILTER
init_iptpinhole();
#endif
#endif
#ifndef NO_BACKGROUND_NO_PIDFILE
if(writepidfile(pidfilename, pid) < 0)
pidfilename = NULL;
#endif
#ifdef ENABLE_LEASEFILE
/*remove(lease_file);*/
syslog(LOG_INFO, "Reloading rules from lease file");
reload_from_lease_file();
#ifdef ENABLE_UPNPPINHOLE
reload_from_lease_file6();
#endif
#endif
#ifdef TOMATO
tomato_load();
#endif /* TOMATO */
return 0;
print_usage:
fprintf(stderr, "Usage:\n\t"
"%s --version\n\t"
"%s --help\n\t"
"%s "
#ifndef DISABLE_CONFIG_FILE
"[-f config_file] "
#endif
"[-i ext_ifname] "
#ifdef ENABLE_IPV6
"[-I ext_ifname6] [-4] "
#endif
"[-o ext_ip]\n"
#ifndef MULTIPLE_EXTERNAL_IP
"\t\t[-a listening_ip]"
#else
"\t\t[-a listening_ip ext_ip]"
#endif
#ifdef ENABLE_HTTPS
" [-H https_port]"
#endif
" [-p port] [-d] [-v]"
#if defined(USE_PF) || defined(USE_IPF)
" [-L]"
#endif
" [-U] [-S0]"
#ifdef ENABLE_NATPMP
" [-N]"
#endif
"\n"
/*"[-l logfile] " not functionnal */
"\t\t[-u uuid] [-s serial] [-m model_number] \n"
"\t\t[-t notify_interval] "
#ifndef NO_BACKGROUND_NO_PIDFILE
"[-P pid_filename] "
#endif
#ifdef ENABLE_MANUFACTURER_INFO_CONFIGURATION
"[-z fiendly_name]"
#endif
"\n\t\t[-B down up] [-w url] [-r clean_ruleset_interval]\n"
#ifdef USE_PF
"\t\t[-q queue] [-T tag]\n"
#endif
#ifdef ENABLE_NFQUEUE
"\t\t[-Q queue] [-n name]\n"
#endif
"\t\t[-A \"permission rule\"] [-b BOOTID]"
#ifdef IGD_V2
" [-1]"
#endif
"\n"
"\nNotes:\n\tThere can be one or several listening_ips.\n"
"\tNotify interval is in seconds. Default is 30 seconds.\n"
#ifndef NO_BACKGROUND_NO_PIDFILE
"\tDefault pid file is '%s'.\n"
#endif
"\tDefault config file is '%s'.\n"
"\tWith -d miniupnpd will run as a standard program.\n"
"\t-o argument is either an IPv4 address or \"STUN:host[:port]\".\n"
#ifdef ENABLE_IPV6
"\t-4 disable IPv6\n"
#endif
#if defined(USE_PF) || defined(USE_IPF)
"\t-L sets packet log in pf and ipf on.\n"
#endif
"\t-S0 disable \"secure\" mode so clients can add mappings to other ips\n"
"\t-U causes miniupnpd to report system uptime instead "
"of daemon uptime.\n"
#ifdef ENABLE_NATPMP
#ifdef ENABLE_PCP
"\t-N enables NAT-PMP and PCP functionality.\n"
#else
"\t-N enables NAT-PMP functionality.\n"
#endif
#endif
"\t-B sets bitrates reported by daemon in bits per second.\n"
"\t-w sets the presentation url. Default is http address on port 80\n"
#ifdef USE_PF
"\t-q sets the ALTQ queue in pf.\n"
"\t-T sets the tag name in pf.\n"
#endif
#ifdef ENABLE_NFQUEUE
"\t-Q sets the queue number that is used by NFQUEUE.\n"
"\t-n sets the name of the interface(s) that packets will arrive on.\n"
#endif
"\t-A use following syntax for permission rules :\n"
"\t (allow|deny) (external port range) ip/mask (internal port range)\n"
"\texamples :\n"
"\t \"allow 1024-65535 192.168.1.0/24 1024-65535\"\n"
"\t \"deny 0-65535 0.0.0.0/0 0-65535\"\n"
"\t-b sets the value of BOOTID.UPNP.ORG SSDP header\n"
#ifdef IGD_V2
"\t-1 force reporting IGDv1 in rootDesc *use with care*\n"
#endif
"\t-v enables LOG_INFO messages, -vv LOG_DEBUG as well (default with -d)\n"
"\t-h / --help prints this help and quits.\n"
"", argv[0], argv[0], argv[0],
#ifndef NO_BACKGROUND_NO_PIDFILE
pidfilename,
#endif
DEFAULT_CONFIG);
return 1;
}
/* === main === */
/* process HTTP or SSDP requests */
int
main(int argc, char * * argv)
{
int i;
int shttpl = -1; /* socket for HTTP */
#if defined(V6SOCKETS_ARE_V6ONLY) && defined(ENABLE_IPV6)
int shttpl_v4 = -1; /* socket for HTTP (ipv4 only) */
#endif
#ifdef ENABLE_HTTPS
int shttpsl = -1; /* socket for HTTPS */
#if defined(V6SOCKETS_ARE_V6ONLY) && defined(ENABLE_IPV6)
int shttpsl_v4 = -1; /* socket for HTTPS (ipv4 only) */
#endif
#endif /* ENABLE_HTTPS */
int sudp = -1; /* IP v4 socket for receiving SSDP */
#ifdef ENABLE_IPV6
int sudpv6 = -1; /* IP v6 socket for receiving SSDP */
#endif
#ifdef ENABLE_NATPMP
int * snatpmp = NULL; /* also used for PCP */
#endif
#if defined(ENABLE_IPV6) && defined(ENABLE_PCP)
int spcp_v6 = -1;
#endif
#ifdef ENABLE_NFQUEUE
int nfqh = -1;
#endif
#ifdef USE_IFACEWATCHER
int sifacewatcher = -1;
#endif
int * snotify = NULL;
int addr_count;
LIST_HEAD(httplisthead, upnphttp) upnphttphead;
struct upnphttp * e = 0;
struct upnphttp * next;
fd_set readset; /* for select() */
fd_set writeset;
struct timeval timeout, timeofday, lasttimeofday = {0, 0};
int max_fd = -1;
#ifdef USE_MINIUPNPDCTL
int sctl = -1;
LIST_HEAD(ctlstructhead, ctlelem) ctllisthead;
struct ctlelem * ectl;
struct ctlelem * ectlnext;
#endif
struct runtime_vars v;
/* variables used for the unused-rule cleanup process */
struct rule_state * rule_list = 0;
struct timeval checktime = {0, 0};
struct lan_addr_s * lan_addr;
#ifdef ENABLE_UPNPPINHOLE
unsigned int next_pinhole_ts;
#endif
for(i = 0; i < argc; i++) {
if(strcmp(argv[i], "version") == 0 || strcmp(argv[i], "--version") == 0) {
puts("miniupnpd " MINIUPNPD_VERSION
#ifdef MINIUPNPD_GIT_REF
" " MINIUPNPD_GIT_REF
#endif
" " __DATE__ );
#ifdef USE_PF
puts("using pf backend");
#endif
#ifdef USE_IPF
puts("using ipf backend");
#endif
#ifdef USE_IPFW
puts("using ipfw backend");
#endif
#ifdef USE_IPTABLES
puts("using netfilter(iptables) backend");
#endif
#ifdef USE_NFTABLES
puts("using netfilter(nftables) backend");
#endif
#ifdef ENABLE_HTTPS
#ifdef OPENSSL_VERSION
puts(OpenSSL_version(OPENSSL_VERSION));
#else
puts(SSLeay_version(SSLEAY_VERSION));
#endif
#endif
puts("build options:"
#ifdef USE_MINIUPNPDCTL
" miniupnpdctl"
#endif
#ifdef ENABLE_IPV6
" ipv6"
#endif
#ifdef UPNP_STRICT
" strict"
#endif
#ifdef ENABLE_NATPMP
" NAT-PMP"
#endif
#ifdef ENABLE_PCP
" PCP"
#ifdef PCP_PEER
" PCP-PEER"
#endif
#ifdef PCP_FLOWP
" PCP-FLOWP"
#endif
#ifdef PCP_SADSCP
" PCP-SADSCP"
#endif
#endif /* ENABLE_PCP */
#ifdef ENABLE_LEASEFILE
" leasefile"
#endif
#ifdef CHECK_PORTINUSE
" check_portinuse"
#endif
#ifdef IGD_V2
" igdv2"
#endif
);
return 0;
}
}
memset(&v, 0, sizeof(v));
if(init(argc, argv, &v) != 0)
return 1;
#ifdef ENABLE_HTTPS
if(init_ssl() < 0)
return 1;
#endif /* ENABLE_HTTPS */
/* count lan addrs */
addr_count = 0;
for(lan_addr = lan_addrs.lh_first; lan_addr != NULL; lan_addr = lan_addr->list.le_next)
addr_count++;
if(addr_count > 0) {
#ifndef ENABLE_IPV6
snotify = calloc(addr_count, sizeof(int));
#else
/* one for IPv4, one for IPv6 */
snotify = calloc(addr_count * 2, sizeof(int));
#endif
}
#ifdef ENABLE_NATPMP
if(addr_count > 0) {
snatpmp = malloc(addr_count * sizeof(int));
for(i = 0; i < addr_count; i++)
snatpmp[i] = -1;
}
#endif
LIST_INIT(&upnphttphead);
#ifdef USE_MINIUPNPDCTL
LIST_INIT(&ctllisthead);
#endif
if(
#ifdef ENABLE_NATPMP
!GETFLAG(ENABLENATPMPMASK) && !GETFLAG(ENABLEUPNPMASK)
#else
!GETFLAG(ENABLEUPNPMASK)
#endif
) {
syslog(LOG_ERR, "Why did you run me anyway?");
return 0;
}
syslog(LOG_INFO, "version " MINIUPNPD_VERSION " starting%s%sext if %s BOOTID=%u",
#ifdef ENABLE_NATPMP
#ifdef ENABLE_PCP
GETFLAG(ENABLENATPMPMASK) ? " NAT-PMP/PCP " : " ",
#else
GETFLAG(ENABLENATPMPMASK) ? " NAT-PMP " : " ",
#endif
#else
" ",
#endif
GETFLAG(ENABLEUPNPMASK) ? "UPnP-IGD " : "",
ext_if_name, upnp_bootid);
#ifdef ENABLE_IPV6
if (ext_if_name6 != ext_if_name) {
syslog(LOG_INFO, "specific IPv6 ext if %s", ext_if_name6);
}
#endif
if(GETFLAG(PERFORMSTUNMASK))
{
if (update_ext_ip_addr_from_stun(1) != 0) {
syslog(LOG_ERR, "Performing STUN failed. EXITING");
return 1;
}
}
else if (!use_ext_ip_addr)
{
char if_addr[INET_ADDRSTRLEN];
struct in_addr addr;
if (getifaddr(ext_if_name, if_addr, INET_ADDRSTRLEN, &addr, NULL) < 0) {
syslog(LOG_WARNING, "Cannot get IP address for ext interface %s. Network is down", ext_if_name);
disable_port_forwarding = 1;
} else if (addr_is_reserved(&addr)) {
syslog(LOG_INFO, "Reserved / private IP address %s on ext interface %s: Port forwarding is impossible", if_addr, ext_if_name);
syslog(LOG_INFO, "You are probably behind NAT, enable option ext_perform_stun=yes to detect public IP address");
syslog(LOG_INFO, "Or use ext_ip= / -o option to declare public IP address");
syslog(LOG_INFO, "Public IP address is required by UPnP/PCP/PMP protocols and clients do not work without it");
disable_port_forwarding = 1;
}
}
#ifdef DYNAMIC_OS_VERSION
{
struct utsname utsname;
if (uname(&utsname) < 0) {
syslog(LOG_ERR, "uname(): %m");
os_version = strdup("unknown");
} else {
os_version = strdup(utsname.release);
}
}
#endif /* DYNAMIC_OS_VERSION */
if(GETFLAG(ENABLEUPNPMASK))
{
unsigned short listen_port;
listen_port = (v.port > 0) ? v.port : 0;
/* open socket for HTTP connections. Listen on the 1st LAN address */
#ifdef ENABLE_IPV6
shttpl = OpenAndConfHTTPSocket(&listen_port, !GETFLAG(IPV6DISABLEDMASK));
#else /* ENABLE_IPV6 */
shttpl = OpenAndConfHTTPSocket(&listen_port);
#endif /* ENABLE_IPV6 */
if(shttpl < 0)
{
syslog(LOG_ERR, "Failed to open socket for HTTP. EXITING");
return 1;
}
v.port = listen_port;
syslog(LOG_NOTICE, "HTTP listening on port %d", v.port);
#if defined(V6SOCKETS_ARE_V6ONLY) && defined(ENABLE_IPV6)
if(!GETFLAG(IPV6DISABLEDMASK))
{
shttpl_v4 = OpenAndConfHTTPSocket(&listen_port, 0);
if(shttpl_v4 < 0)
{
syslog(LOG_ERR, "Failed to open socket for HTTP on port %d (IPv4). EXITING", v.port);
return 1;
}
}
#endif /* V6SOCKETS_ARE_V6ONLY */
#ifdef ENABLE_HTTPS
/* https */
listen_port = (v.https_port > 0) ? v.https_port : 0;
#ifdef ENABLE_IPV6
shttpsl = OpenAndConfHTTPSocket(&listen_port, !GETFLAG(IPV6DISABLEDMASK));
#else /* ENABLE_IPV6 */
shttpsl = OpenAndConfHTTPSocket(&listen_port);
#endif /* ENABLE_IPV6 */
if(shttpsl < 0)
{
syslog(LOG_ERR, "Failed to open socket for HTTPS. EXITING");
return 1;
}
v.https_port = listen_port;
syslog(LOG_NOTICE, "HTTPS listening on port %d", v.https_port);
#if defined(V6SOCKETS_ARE_V6ONLY) && defined(ENABLE_IPV6)
shttpsl_v4 = OpenAndConfHTTPSocket(&listen_port, 0);
if(shttpsl_v4 < 0)
{
syslog(LOG_ERR, "Failed to open socket for HTTPS on port %d (IPv4). EXITING", v.https_port);
return 1;
}
#endif /* V6SOCKETS_ARE_V6ONLY */
#endif /* ENABLE_HTTPS */
#ifdef ENABLE_IPV6
if(!GETFLAG(IPV6DISABLEDMASK)) {
if(find_ipv6_addr(lan_addrs.lh_first ? lan_addrs.lh_first->ifname : NULL,
ipv6_addr_for_http_with_brackets, sizeof(ipv6_addr_for_http_with_brackets)) > 0) {
syslog(LOG_NOTICE, "HTTP IPv6 address given to control points : %s",
ipv6_addr_for_http_with_brackets);
} else {
memcpy(ipv6_addr_for_http_with_brackets, "[::1]", 6);
syslog(LOG_WARNING, "no HTTP IPv6 address, disabling IPv6");
SETFLAG(IPV6DISABLEDMASK);
}
}
#endif /* ENABLE_IPV6 */
/* open socket for SSDP connections */
sudp = OpenAndConfSSDPReceiveSocket(0);
if(sudp < 0)
{
syslog(LOG_NOTICE, "Failed to open socket for receiving SSDP. Trying to use MiniSSDPd");
if(SubmitServicesToMiniSSDPD(lan_addrs.lh_first->str, v.port) < 0) {
syslog(LOG_ERR, "Failed to connect to MiniSSDPd. EXITING");
return 1;
}
}
#ifdef ENABLE_IPV6
if(!GETFLAG(IPV6DISABLEDMASK))
{
sudpv6 = OpenAndConfSSDPReceiveSocket(1);
if(sudpv6 < 0)
{
syslog(LOG_WARNING, "Failed to open socket for receiving SSDP (IP v6).");
}
}
#endif
/* open socket for sending notifications */
if(OpenAndConfSSDPNotifySockets(snotify) < 0)
{
syslog(LOG_ERR, "Failed to open sockets for sending SSDP notify "
"messages. EXITING");
return 1;
}
#ifdef USE_IFACEWATCHER
/* open socket for kernel notifications about new network interfaces */
if (sudp >= 0)
{
sifacewatcher = OpenAndConfInterfaceWatchSocket();
if (sifacewatcher < 0)
{
syslog(LOG_ERR, "Failed to open socket for receiving network interface notifications");
}
}
#endif
}
#ifdef ENABLE_NATPMP
/* open socket for NAT PMP traffic */
if(GETFLAG(ENABLENATPMPMASK))
{
if(OpenAndConfNATPMPSockets(snatpmp) < 0)
#ifdef ENABLE_PCP
{
syslog(LOG_ERR, "Failed to open sockets for NAT-PMP/PCP.");
} else {
syslog(LOG_NOTICE, "Listening for NAT-PMP/PCP traffic on port %u",
NATPMP_PORT);
}
#else
{
syslog(LOG_ERR, "Failed to open sockets for NAT PMP.");
} else {
syslog(LOG_NOTICE, "Listening for NAT-PMP traffic on port %u",
NATPMP_PORT);
}
#endif
}
#endif
#if defined(ENABLE_IPV6) && defined(ENABLE_PCP)
if(!GETFLAG(IPV6DISABLEDMASK)) {
spcp_v6 = OpenAndConfPCPv6Socket();
}
#endif
/* for miniupnpdctl */
#ifdef USE_MINIUPNPDCTL
sctl = OpenAndConfCtlUnixSocket("/var/run/miniupnpd.ctl");
#endif
#ifdef ENABLE_NFQUEUE
if ( nfqueue != -1 && n_nfqix > 0) {
nfqh = OpenAndConfNFqueue();
if(nfqh < 0) {
syslog(LOG_ERR, "Failed to open fd for NFQUEUE.");
return 1;
} else {
syslog(LOG_NOTICE, "Opened NFQUEUE %d",nfqueue);
}
}
#endif
#ifdef TOMATO
tomato_helper();
#endif
#ifdef ENABLE_PCP
if(GETFLAG(ENABLENATPMPMASK))
{
/* Send PCP startup announcements */
#ifdef ENABLE_IPV6
PCPSendUnsolicitedAnnounce(snatpmp, addr_count, spcp_v6);
#else /* IPv4 only */
PCPSendUnsolicitedAnnounce(snatpmp, addr_count);
#endif
}
#endif
/* drop privileges */
#ifdef HAS_PLEDGE
/* mcast ? unix ? */
if (pledge("stdio inet pf", NULL) < 0) {
syslog(LOG_ERR, "pledge(): %m");
return 1;
}
#endif /* HAS_PLEDGE */
#ifdef HAS_LIBCAP
{
cap_t caps = cap_get_proc();
if (caps == NULL) {
syslog(LOG_ERR, "cap_get_proc(): %m");
} else {
static const cap_value_t cap_list[3] = { CAP_NET_BROADCAST, CAP_NET_ADMIN, CAP_NET_RAW };
char * txt_caps = cap_to_text(caps, NULL);
if (txt_caps == NULL) {
syslog(LOG_ERR, "cap_to_text(): %m");
} else {
syslog(LOG_DEBUG, "capabilities %s", txt_caps);
if (cap_free(txt_caps) < 0) {
syslog(LOG_ERR, "cap_free(): %m");
}
}
if (cap_clear(caps) < 0) {
syslog(LOG_ERR, "cap_clear(): %m");
}
if (cap_set_flag(caps, CAP_PERMITTED, sizeof(cap_list)/sizeof(cap_list[0]), cap_list, CAP_SET) < 0) {
syslog(LOG_ERR, "cap_set_flag(): %m");
}
if (cap_set_flag(caps, CAP_EFFECTIVE, sizeof(cap_list)/sizeof(cap_list[0]), cap_list, CAP_SET) < 0) {
syslog(LOG_ERR, "cap_set_flag(): %m");
}
txt_caps = cap_to_text(caps, NULL);
if (txt_caps == NULL) {
syslog(LOG_ERR, "cap_to_text(): %m");
} else {
syslog(LOG_DEBUG, "capabilities %s", txt_caps);
if (cap_free(txt_caps) < 0) {
syslog(LOG_ERR, "cap_free(): %m");
}
}
if (cap_set_proc(caps) < 0) {
syslog(LOG_ERR, "cap_set_proc(): %m");
}
if (cap_free(caps) < 0) {
syslog(LOG_ERR, "cap_free(): %m");
}
}
}
#endif /* HAS_LIBCAP */
#ifdef HAS_LIBCAP_NG
capng_setpid(getpid());
capng_clear(CAPNG_SELECT_BOTH);
if (capng_updatev(CAPNG_ADD, CAPNG_EFFECTIVE|CAPNG_PERMITTED, CAP_NET_BROADCAST, CAP_NET_ADMIN, CAP_NET_RAW, -1) < 0) {
syslog(LOG_ERR, "capng_updatev() failed");
} else {
if (capng_apply(CAPNG_SELECT_BOTH) < 0) {
syslog(LOG_ERR, "capng_apply() failed");
}
}
#endif /* HAS_LIBCAP_NG */
/* main loop */
while(!quitting)
{
#ifdef USE_TIME_AS_BOOTID
/* Correct startup_time if it was set with a RTC close to 0 */
if((upnp_bootid<60*60*24) && (time(NULL)>60*60*24))
{
upnp_bootid = time(NULL);
}
#endif
#if !defined(TOMATO) && defined(ENABLE_LEASEFILE) && defined(LEASEFILE_USE_REMAINING_TIME)
if(should_rewrite_leasefile)
{
lease_file_rewrite();
should_rewrite_leasefile = 0;
}
#endif /* !TOMATO && ENABLE_LEASEFILE && LEASEFILE_USE_REMAINING_TIME */
/* send public address change notifications if needed */
if(should_send_public_address_change_notif)
{
syslog(LOG_INFO, "should send external iface address change notification(s)");
if(GETFLAG(PERFORMSTUNMASK))
{
if (update_ext_ip_addr_from_stun(0) != 0) {
/* if stun succeed it updates disable_port_forwarding;
* if stun failed (non-zero return value) then port forwarding would not work, so disable it */
disable_port_forwarding = 1;
}
}
else if (!use_ext_ip_addr)
{
char if_addr[INET_ADDRSTRLEN];
struct in_addr addr;
if (getifaddr(ext_if_name, if_addr, INET_ADDRSTRLEN, &addr, NULL) < 0) {
syslog(LOG_WARNING, "Cannot get IP address for ext interface %s. Network is down", ext_if_name);
disable_port_forwarding = 1;
} else {
int reserved = addr_is_reserved(&addr);
if (!disable_port_forwarding && reserved) {
syslog(LOG_INFO, "Reserved / private IP address %s on ext interface %s: Port forwarding is impossible", if_addr, ext_if_name);
syslog(LOG_INFO, "You are probably behind NAT, enable option ext_perform_stun=yes to detect public IP address");
syslog(LOG_INFO, "Or use ext_ip= / -o option to declare public IP address");
syslog(LOG_INFO, "Public IP address is required by UPnP/PCP/PMP protocols and clients do not work without it");
disable_port_forwarding = 1;
} else if (disable_port_forwarding && !reserved) {
syslog(LOG_INFO, "Public IP address %s on ext interface %s: Port forwarding is enabled", if_addr, ext_if_name);
disable_port_forwarding = 0;
}
}
}
#ifdef ENABLE_NATPMP
if(GETFLAG(ENABLENATPMPMASK))
SendNATPMPPublicAddressChangeNotification(snatpmp, addr_count);
#endif
#ifdef ENABLE_EVENTS
if(GETFLAG(ENABLEUPNPMASK))
{
upnp_event_var_change_notify(EWanIPC);
}
#endif
#ifdef ENABLE_PCP
if(GETFLAG(ENABLENATPMPMASK))
{
#ifdef ENABLE_IPV6
PCPPublicAddressChanged(snatpmp, addr_count, spcp_v6);
#else /* IPv4 only */
PCPPublicAddressChanged(snatpmp, addr_count);
#endif
}
#endif
should_send_public_address_change_notif = 0;
}
/* Check if we need to send SSDP NOTIFY messages and do it if
* needed */
if(upnp_gettimeofday(&timeofday) < 0)
{
syslog(LOG_ERR, "gettimeofday(): %m");
timeout.tv_sec = v.notify_interval;
timeout.tv_usec = 0;
}
else
{
/* the comparaison is not very precise but who cares ? */
if(timeofday.tv_sec >= (lasttimeofday.tv_sec + v.notify_interval))
{
if (GETFLAG(ENABLEUPNPMASK))
SendSSDPNotifies2(snotify,
(unsigned short)v.port,
#ifdef ENABLE_HTTPS
(unsigned short)v.https_port,
#endif
v.notify_interval << 1);
memcpy(&lasttimeofday, &timeofday, sizeof(struct timeval));
timeout.tv_sec = v.notify_interval;
timeout.tv_usec = 0;
}
else
{
timeout.tv_sec = lasttimeofday.tv_sec + v.notify_interval
- timeofday.tv_sec;
if(timeofday.tv_usec > lasttimeofday.tv_usec)
{
timeout.tv_usec = 1000000 + lasttimeofday.tv_usec
- timeofday.tv_usec;
timeout.tv_sec--;
}
else
{
timeout.tv_usec = lasttimeofday.tv_usec - timeofday.tv_usec;
}
}
}
/* remove unused rules */
if( v.clean_ruleset_interval
&& (timeofday.tv_sec >= checktime.tv_sec + v.clean_ruleset_interval))
{
if(rule_list)
{
remove_unused_rules(rule_list);
rule_list = NULL;
}
else
{
rule_list = get_upnp_rules_state_list(v.clean_ruleset_threshold);
}
memcpy(&checktime, &timeofday, sizeof(struct timeval));
}
/* Remove expired port mappings, based on UPnP IGD LeaseDuration
* or NAT-PMP lifetime) */
if(nextruletoclean_timestamp
&& ((unsigned int)timeofday.tv_sec >= nextruletoclean_timestamp))
{
syslog(LOG_DEBUG, "cleaning expired Port Mappings");
get_upnp_rules_state_list(0);
}
if(nextruletoclean_timestamp
&& ((unsigned int)timeout.tv_sec >= (nextruletoclean_timestamp - timeofday.tv_sec)))
{
timeout.tv_sec = nextruletoclean_timestamp - timeofday.tv_sec;
timeout.tv_usec = 0;
syslog(LOG_DEBUG, "setting timeout to %u sec",
(unsigned)timeout.tv_sec);
}
#ifdef ENABLE_UPNPPINHOLE
/* Clean up expired IPv6 PinHoles */
next_pinhole_ts = 0;
upnp_clean_expired_pinholes(&next_pinhole_ts);
if(next_pinhole_ts &&
timeout.tv_sec >= (int)(next_pinhole_ts - timeofday.tv_sec)) {
timeout.tv_sec = next_pinhole_ts - timeofday.tv_sec;
timeout.tv_usec = 0;
}
#endif /* ENABLE_UPNPPINHOLE */
/* select open sockets (SSDP, HTTP listen, and all HTTP soap sockets) */
FD_ZERO(&readset);
FD_ZERO(&writeset);
if (sudp >= 0)
{
FD_SET(sudp, &readset);
max_fd = MAX( max_fd, sudp);
#ifdef USE_IFACEWATCHER
if (sifacewatcher >= 0)
{
FD_SET(sifacewatcher, &readset);
max_fd = MAX(max_fd, sifacewatcher);
}
#endif
}
if (shttpl >= 0)
{
FD_SET(shttpl, &readset);
max_fd = MAX( max_fd, shttpl);
}
#if defined(V6SOCKETS_ARE_V6ONLY) && defined(ENABLE_IPV6)
if (shttpl_v4 >= 0)
{
FD_SET(shttpl_v4, &readset);
max_fd = MAX( max_fd, shttpl_v4);
}
#endif
#ifdef ENABLE_HTTPS
if (shttpsl >= 0)
{
FD_SET(shttpsl, &readset);
max_fd = MAX( max_fd, shttpsl);
}
#if defined(V6SOCKETS_ARE_V6ONLY) && defined(ENABLE_IPV6)
if (shttpsl_v4 >= 0)
{
FD_SET(shttpsl_v4, &readset);
max_fd = MAX( max_fd, shttpsl_v4);
}
#endif
#endif /* ENABLE_HTTPS */
#ifdef ENABLE_IPV6
if (sudpv6 >= 0)
{
FD_SET(sudpv6, &readset);
max_fd = MAX( max_fd, sudpv6);
}
#endif
#ifdef ENABLE_NFQUEUE
if (nfqh >= 0)
{
FD_SET(nfqh, &readset);
max_fd = MAX( max_fd, nfqh);
}
#endif
i = 0; /* active HTTP connections count */
for(e = upnphttphead.lh_first; e != NULL; e = e->entries.le_next)
{
if(e->socket >= 0)
{
if(e->state <= EWaitingForHttpContent)
FD_SET(e->socket, &readset);
else if(e->state == ESendingAndClosing)
FD_SET(e->socket, &writeset);
else
continue;
max_fd = MAX(max_fd, e->socket);
i++;
}
}
/* for debug */
#ifdef DEBUG
if(i > 1)
{
syslog(LOG_DEBUG, "%d active incoming HTTP connections", i);
}
#endif
#ifdef ENABLE_NATPMP
for(i=0; i<addr_count; i++) {
if(snatpmp[i] >= 0) {
FD_SET(snatpmp[i], &readset);
max_fd = MAX( max_fd, snatpmp[i]);
}
}
#endif
#if defined(ENABLE_IPV6) && defined(ENABLE_PCP)
if(spcp_v6 >= 0) {
FD_SET(spcp_v6, &readset);
max_fd = MAX(max_fd, spcp_v6);
}
#endif
#ifdef USE_MINIUPNPDCTL
if(sctl >= 0) {
FD_SET(sctl, &readset);
max_fd = MAX( max_fd, sctl);
}
for(ectl = ctllisthead.lh_first; ectl; ectl = ectl->entries.le_next)
{
if(ectl->socket >= 0) {
FD_SET(ectl->socket, &readset);
max_fd = MAX( max_fd, ectl->socket);
}
}
#endif
#ifdef ENABLE_EVENTS
upnpevents_selectfds(&readset, &writeset, &max_fd);
#endif
/* queued "sendto" */
{
struct timeval next_send;
i = get_next_scheduled_send(&next_send);
if(i > 0) {
#ifdef DEBUG
syslog(LOG_DEBUG, "%d queued sendto", i);
#endif
i = get_sendto_fds(&writeset, &max_fd, &timeofday);
if(timeofday.tv_sec > next_send.tv_sec ||
(timeofday.tv_sec == next_send.tv_sec && timeofday.tv_usec >= next_send.tv_usec)) {
if(i > 0) {
timeout.tv_sec = 0;
timeout.tv_usec = 0;
}
} else {
struct timeval tmp_timeout;
tmp_timeout.tv_sec = (next_send.tv_sec - timeofday.tv_sec);
tmp_timeout.tv_usec = (next_send.tv_usec - timeofday.tv_usec);
if(tmp_timeout.tv_usec < 0) {
tmp_timeout.tv_usec += 1000000;
tmp_timeout.tv_sec--;
}
if(timeout.tv_sec > tmp_timeout.tv_sec
|| (timeout.tv_sec == tmp_timeout.tv_sec && timeout.tv_usec > tmp_timeout.tv_usec)) {
timeout.tv_sec = tmp_timeout.tv_sec;
timeout.tv_usec = tmp_timeout.tv_usec;
}
}
}
}
if(select(max_fd+1, &readset, &writeset, 0, &timeout) < 0)
{
if(quitting) goto shutdown;
#ifdef TOMATO
if (gotusr2)
{
gotusr2 = 0;
tomato_helper();
continue;
}
#endif /* TOMATO */
if(errno == EINTR) continue; /* interrupted by a signal, start again */
syslog(LOG_ERR, "select(all): %m");
syslog(LOG_ERR, "Failed to select open sockets. EXITING");
return 1; /* very serious cause of error */
}
i = try_sendto(&writeset);
if(i < 0) {
syslog(LOG_ERR, "try_sendto failed to send %d packets", -i);
}
#ifdef USE_MINIUPNPDCTL
for(ectl = ctllisthead.lh_first; ectl;)
{
ectlnext = ectl->entries.le_next;
if((ectl->socket >= 0) && FD_ISSET(ectl->socket, &readset))
{
char buf[256];
int l;
l = read(ectl->socket, buf, sizeof(buf));
if(l > 0)
{
/*write(ectl->socket, buf, l);*/
write_command_line(ectl->socket, argc, argv);
#ifndef DISABLE_CONFIG_FILE
write_option_list(ectl->socket);
#endif
write_permlist(ectl->socket, upnppermlist, num_upnpperm);
write_upnphttp_details(ectl->socket, upnphttphead.lh_first);
write_ctlsockets_list(ectl->socket, ctllisthead.lh_first);
write_ruleset_details(ectl->socket);
#ifdef ENABLE_EVENTS
write_events_details(ectl->socket);
#endif
/* close the socket */
close(ectl->socket);
ectl->socket = -1;
}
else
{
close(ectl->socket);
ectl->socket = -1;
}
}
if(ectl->socket < 0)
{
LIST_REMOVE(ectl, entries);
free(ectl);
}
ectl = ectlnext;
}
if((sctl >= 0) && FD_ISSET(sctl, &readset))
{
int s;
struct sockaddr_un clientname;
struct ctlelem * tmp;
socklen_t clientnamelen = sizeof(struct sockaddr_un);
/*syslog(LOG_DEBUG, "sctl!");*/
s = accept(sctl, (struct sockaddr *)&clientname,
&clientnamelen);
syslog(LOG_DEBUG, "sctl! : '%s'", clientname.sun_path);
tmp = malloc(sizeof(struct ctlelem));
if (tmp == NULL)
{
syslog(LOG_ERR, "Unable to allocate memory for ctlelem in main()");
close(s);
}
else
{
tmp->socket = s;
LIST_INSERT_HEAD(&ctllisthead, tmp, entries);
}
}
#endif
#ifdef ENABLE_EVENTS
upnpevents_processfds(&readset, &writeset);
#endif
#ifdef ENABLE_NATPMP
/* process NAT-PMP packets */
for(i=0; i<addr_count; i++)
{
if((snatpmp[i] >= 0) && FD_ISSET(snatpmp[i], &readset))
{
unsigned char msg_buff[PCP_MAX_LEN];
struct sockaddr_in senderaddr;
socklen_t senderaddrlen;
int len;
memset(msg_buff, 0, PCP_MAX_LEN);
senderaddrlen = sizeof(senderaddr);
len = ReceiveNATPMPOrPCPPacket(snatpmp[i],
(struct sockaddr *)&senderaddr,
&senderaddrlen,
NULL,
msg_buff, sizeof(msg_buff));
if (len < 1)
continue;
#ifdef ENABLE_PCP
if (msg_buff[0]==0) { /* version equals to 0 -> means NAT-PMP */
/* Check if the packet is coming from a LAN to enforce RFC6886 :
* The NAT gateway MUST NOT accept mapping requests destined to the NAT
* gateway's external IP address or received on its external network
* interface. Only packets received on the internal interface(s) with a
* destination address matching the internal address(es) of the NAT
* gateway should be allowed. */
/* TODO : move to ProcessIncomingNATPMPPacket() ? */
lan_addr = get_lan_for_peer((struct sockaddr *)&senderaddr);
if(lan_addr == NULL) {
char sender_str[64];
sockaddr_to_string((struct sockaddr *)&senderaddr, sender_str, sizeof(sender_str));
syslog(LOG_WARNING, "NAT-PMP packet sender %s not from a LAN, ignoring",
sender_str);
continue;
}
ProcessIncomingNATPMPPacket(snatpmp[i], msg_buff, len,
&senderaddr);
} else { /* everything else can be PCP */
ProcessIncomingPCPPacket(snatpmp[i], msg_buff, len,
(struct sockaddr *)&senderaddr, NULL);
}
#else
/* Check if the packet is coming from a LAN to enforce RFC6886 :
* The NAT gateway MUST NOT accept mapping requests destined to the NAT
* gateway's external IP address or received on its external network
* interface. Only packets received on the internal interface(s) with a
* destination address matching the internal address(es) of the NAT
* gateway should be allowed. */
/* TODO : move to ProcessIncomingNATPMPPacket() ? */
lan_addr = get_lan_for_peer((struct sockaddr *)&senderaddr);
if(lan_addr == NULL) {
char sender_str[64];
sockaddr_to_string((struct sockaddr *)&senderaddr, sender_str, sizeof(sender_str));
syslog(LOG_WARNING, "NAT-PMP packet sender %s not from a LAN, ignoring",
sender_str);
continue;
}
ProcessIncomingNATPMPPacket(snatpmp[i], msg_buff, len, &senderaddr);
#endif
}
}
#endif
#if defined(ENABLE_IPV6) && defined(ENABLE_PCP)
/* in IPv6, only PCP is supported, not NAT-PMP */
if(spcp_v6 >= 0 && FD_ISSET(spcp_v6, &readset))
{
unsigned char msg_buff[PCP_MAX_LEN];
struct sockaddr_in6 senderaddr;
socklen_t senderaddrlen;
struct sockaddr_in6 receiveraddr;
int len;
memset(msg_buff, 0, PCP_MAX_LEN);
senderaddrlen = sizeof(senderaddr);
len = ReceiveNATPMPOrPCPPacket(spcp_v6,
(struct sockaddr *)&senderaddr,
&senderaddrlen,
&receiveraddr,
msg_buff, sizeof(msg_buff));
if(len >= 1)
ProcessIncomingPCPPacket(spcp_v6, msg_buff, len,
(struct sockaddr *)&senderaddr,
&receiveraddr);
}
#endif
/* process SSDP packets */
if(sudp >= 0 && FD_ISSET(sudp, &readset))
{
/*syslog(LOG_INFO, "Received UDP Packet");*/
#ifdef ENABLE_HTTPS
ProcessSSDPRequest(sudp, (unsigned short)v.port, (unsigned short)v.https_port);
#else
ProcessSSDPRequest(sudp, (unsigned short)v.port);
#endif
}
#ifdef ENABLE_IPV6
if(sudpv6 >= 0 && FD_ISSET(sudpv6, &readset))
{
syslog(LOG_INFO, "Received UDP Packet (IPv6)");
#ifdef ENABLE_HTTPS
ProcessSSDPRequest(sudpv6, (unsigned short)v.port, (unsigned short)v.https_port);
#else
ProcessSSDPRequest(sudpv6, (unsigned short)v.port);
#endif
}
#endif
#ifdef USE_IFACEWATCHER
/* process kernel notifications */
if (sifacewatcher >= 0 && FD_ISSET(sifacewatcher, &readset))
ProcessInterfaceWatchNotify(sifacewatcher);
#endif
/* process active HTTP connections */
/* LIST_FOREACH macro is not available under linux */
for(e = upnphttphead.lh_first; e != NULL; e = e->entries.le_next)
{
if(e->socket >= 0)
{
if(FD_ISSET(e->socket, &readset) ||
FD_ISSET(e->socket, &writeset))
{
Process_upnphttp(e);
}
}
}
/* process incoming HTTP connections */
if(shttpl >= 0 && FD_ISSET(shttpl, &readset))
{
struct upnphttp * tmp;
tmp = ProcessIncomingHTTP(shttpl, "HTTP");
if(tmp)
{
LIST_INSERT_HEAD(&upnphttphead, tmp, entries);
}
}
#if defined(V6SOCKETS_ARE_V6ONLY) && defined(ENABLE_IPV6)
if(shttpl_v4 >= 0 && FD_ISSET(shttpl_v4, &readset))
{
struct upnphttp * tmp;
tmp = ProcessIncomingHTTP(shttpl_v4, "HTTP");
if(tmp)
{
LIST_INSERT_HEAD(&upnphttphead, tmp, entries);
}
}
#endif
#ifdef ENABLE_HTTPS
if(shttpsl >= 0 && FD_ISSET(shttpsl, &readset))
{
struct upnphttp * tmp;
tmp = ProcessIncomingHTTP(shttpsl, "HTTPS");
if(tmp)
{
InitSSL_upnphttp(tmp);
LIST_INSERT_HEAD(&upnphttphead, tmp, entries);
}
}
#if defined(V6SOCKETS_ARE_V6ONLY) && defined(ENABLE_IPV6)
if(shttpsl_v4 >= 0 && FD_ISSET(shttpsl_v4, &readset))
{
struct upnphttp * tmp;
tmp = ProcessIncomingHTTP(shttpsl_v4, "HTTPS");
if(tmp)
{
InitSSL_upnphttp(tmp);
LIST_INSERT_HEAD(&upnphttphead, tmp, entries);
}
}
#endif
#endif /* ENABLE_HTTPS */
#ifdef ENABLE_NFQUEUE
/* process NFQ packets */
if(nfqh >= 0 && FD_ISSET(nfqh, &readset))
{
/* syslog(LOG_INFO, "Received NFQUEUE Packet");*/
ProcessNFQUEUE(nfqh);
}
#endif
/* delete finished HTTP connections */
for(e = upnphttphead.lh_first; e != NULL; )
{
next = e->entries.le_next;
if(e->state >= EToDelete)
{
LIST_REMOVE(e, entries);
Delete_upnphttp(e);
}
e = next;
}
} /* end of main loop */
shutdown:
syslog(LOG_NOTICE, "shutting down MiniUPnPd");
/* send good-bye */
if (GETFLAG(ENABLEUPNPMASK))
{
#ifndef ENABLE_IPV6
if(SendSSDPGoodbye(snotify, addr_count) < 0)
#else
if(SendSSDPGoodbye(snotify, addr_count * 2) < 0)
#endif
{
syslog(LOG_ERR, "Failed to broadcast good-bye notifications");
}
}
/* try to send pending packets */
finalize_sendto();
#ifdef TOMATO
tomato_save("/etc/upnp/data");
#endif /* TOMATO */
#if defined(ENABLE_LEASEFILE) && defined(LEASEFILE_USE_REMAINING_TIME)
lease_file_rewrite();
#endif /* ENABLE_LEASEFILE && LEASEFILE_USE_REMAINING_TIME */
/* close out open sockets */
while(upnphttphead.lh_first != NULL)
{
e = upnphttphead.lh_first;
LIST_REMOVE(e, entries);
Delete_upnphttp(e);
}
if (sudp >= 0) close(sudp);
if (shttpl >= 0) close(shttpl);
#if defined(V6SOCKETS_ARE_V6ONLY) && defined(ENABLE_IPV6)
if (shttpl_v4 >= 0) close(shttpl_v4);
#endif
#ifdef ENABLE_IPV6
if (sudpv6 >= 0) close(sudpv6);
#endif
#ifdef USE_IFACEWATCHER
if(sifacewatcher >= 0) close(sifacewatcher);
#endif
#ifdef ENABLE_NATPMP
for(i=0; i<addr_count; i++) {
if(snatpmp[i]>=0)
{
close(snatpmp[i]);
snatpmp[i] = -1;
}
}
#endif
#if defined(ENABLE_IPV6) && defined(ENABLE_PCP)
if(spcp_v6 >= 0)
{
close(spcp_v6);
spcp_v6 = -1;
}
#endif
#ifdef USE_MINIUPNPDCTL
if(sctl>=0)
{
close(sctl);
sctl = -1;
if(unlink("/var/run/miniupnpd.ctl") < 0)
{
syslog(LOG_ERR, "unlink() %m");
}
}
#endif
if (GETFLAG(ENABLEUPNPMASK))
{
#ifndef ENABLE_IPV6
for(i = 0; i < addr_count; i++)
#else
for(i = 0; i < addr_count * 2; i++)
#endif
close(snotify[i]);
}
/* remove pidfile */
#ifndef NO_BACKGROUND_NO_PIDFILE
if(pidfilename && (unlink(pidfilename) < 0))
{
syslog(LOG_ERR, "Failed to remove pidfile %s: %m", pidfilename);
}
#endif
/* delete lists */
while(lan_addrs.lh_first != NULL)
{
lan_addr = lan_addrs.lh_first;
LIST_REMOVE(lan_addrs.lh_first, list);
free(lan_addr);
}
#ifdef ENABLE_HTTPS
free_ssl();
#endif
#ifdef ENABLE_NATPMP
free(snatpmp);
#endif
free(snotify);
shutdown_redirect();
#ifndef DISABLE_CONFIG_FILE
/* in some case shutdown_redirect() may need the option values */
freeoptions();
#endif
#ifdef DYNAMIC_OS_VERSION
free(os_version);
#endif
closelog();
return 0;
}
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