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miniupnp/miniupnpd/miniupnpd.c

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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;
}
#if defined(UPNP_STRICT) && defined(IGD_V2)
/* WANIPConnection:2 Service p9 :
* Upon startup, UPnP IGD DCP MUST broadcast an ssdp:byebye before
* sending the initial ssdp:alive onto the local network. Sending an
* ssdp:byebye as part of the normal start up process for a UPnP
* device ensures that UPnP control points with information about the
* previous device instance will safely discard state information
* about the previous device instance before communicating with the
* new device instance. */
if (GETFLAG(ENABLEUPNPMASK))
{
#ifndef ENABLE_IPV6
if(SendSSDPGoodbye(snotify, addr_count) < 0)
#else
if(SendSSDPGoodbye(snotify, addr_count * 2) < 0)
#endif
{
syslog(LOG_WARNING, "Failed to broadcast good-bye notifications");
}
}
#endif /* UPNP_STRICT */
#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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