791 lines
21 KiB
C
791 lines
21 KiB
C
/* $Id: upnpredirect.c,v 1.97 2020/06/06 17:55:24 nanard Exp $ */
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/* vim: tabstop=4 shiftwidth=4 noexpandtab
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* MiniUPnP project
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* http://miniupnp.free.fr/ or https://miniupnp.tuxfamily.org/
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* (c) 2006-2020 Thomas Bernard
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* This software is subject to the conditions detailed
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* in the LICENCE file provided within the distribution */
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#include <stdlib.h>
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#include <string.h>
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#include <syslog.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <net/if.h>
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#include <arpa/inet.h>
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#include <stdio.h>
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#include <ctype.h>
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#include <unistd.h>
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#include "macros.h"
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#include "config.h"
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#include "upnpredirect.h"
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#include "upnpglobalvars.h"
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#include "upnpevents.h"
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#include "portinuse.h"
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#include "upnputils.h"
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#if defined(USE_NETFILTER)
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#include "netfilter/iptcrdr.h"
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#endif
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#if defined(USE_PF)
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#include "pf/obsdrdr.h"
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#endif
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#if defined(USE_IPF)
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#include "ipf/ipfrdr.h"
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#endif
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#if defined(USE_IPFW)
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#include "ipfw/ipfwrdr.h"
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#endif
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#ifdef USE_MINIUPNPDCTL
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#include <stdio.h>
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#include <unistd.h>
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#endif
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#ifdef ENABLE_LEASEFILE
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#include <sys/stat.h>
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#endif
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/* from <inttypes.h> */
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#ifndef PRIu64
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#define PRIu64 "llu"
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#endif
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/* proto_atoi()
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* convert the string "UDP" or "TCP" to IPPROTO_UDP and IPPROTO_UDP */
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static int
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proto_atoi(const char * protocol)
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{
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int proto = IPPROTO_TCP;
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if(strcasecmp(protocol, "UDP") == 0)
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proto = IPPROTO_UDP;
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#ifdef IPPROTO_UDPLITE
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else if(strcasecmp(protocol, "UDPLITE") == 0)
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proto = IPPROTO_UDPLITE;
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#endif /* IPPROTO_UDPLITE */
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return proto;
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}
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/* proto_itoa()
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* convert IPPROTO_UDP, IPPROTO_UDP, etc. to "UDP", "TCP" */
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static const char *
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proto_itoa(int proto)
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{
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const char * protocol;
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switch(proto) {
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case IPPROTO_UDP:
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protocol = "UDP";
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break;
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case IPPROTO_TCP:
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protocol = "TCP";
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break;
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#ifdef IPPROTO_UDPLITE
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case IPPROTO_UDPLITE:
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protocol = "UDPLITE";
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break;
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#endif /* IPPROTO_UDPLITE */
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default:
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protocol = "*UNKNOWN*";
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}
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return protocol;
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}
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#ifdef ENABLE_LEASEFILE
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static int
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lease_file_add(unsigned short eport,
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const char * iaddr,
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unsigned short iport,
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int proto,
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const char * desc,
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unsigned int timestamp)
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{
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FILE * fd;
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if (lease_file == NULL) return 0;
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fd = fopen( lease_file, "a");
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if (fd==NULL) {
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syslog(LOG_ERR, "could not open lease file: %s", lease_file);
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return -1;
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}
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/* convert our time to unix time
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* if LEASEFILE_USE_REMAINING_TIME is defined, only the remaining time is stored */
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if (timestamp != 0) {
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timestamp -= upnp_time();
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#ifndef LEASEFILE_USE_REMAINING_TIME
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timestamp += time(NULL);
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#endif
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}
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fprintf(fd, "%s:%hu:%s:%hu:%u:%s\n",
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proto_itoa(proto), eport, iaddr, iport,
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timestamp, desc);
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fclose(fd);
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return 0;
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}
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static int
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lease_file_remove(unsigned short eport, int proto)
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{
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FILE* fd, *fdt;
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int tmp;
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char buf[512];
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char str[32];
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char tmpfilename[128];
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int str_size, buf_size;
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if (lease_file == NULL) return 0;
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if (strlen( lease_file) + 7 > sizeof(tmpfilename)) {
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syslog(LOG_ERR, "Lease filename is too long");
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return -1;
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}
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snprintf( tmpfilename, sizeof(tmpfilename), "%sXXXXXX", lease_file);
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fd = fopen( lease_file, "r");
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if (fd==NULL) {
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return 0;
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}
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snprintf( str, sizeof(str), "%s:%u", proto_itoa(proto), eport);
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str_size = strlen(str);
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tmp = mkstemp(tmpfilename);
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if (tmp==-1) {
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fclose(fd);
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syslog(LOG_ERR, "could not open temporary lease file");
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return -1;
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}
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fchmod(tmp, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
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fdt = fdopen(tmp, "a");
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buf[sizeof(buf)-1] = 0;
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while( fgets(buf, sizeof(buf)-1, fd) != NULL) {
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buf_size = strlen(buf);
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if (buf_size < str_size || strncmp(str, buf, str_size)!=0) {
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fwrite(buf, buf_size, 1, fdt);
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}
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}
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fclose(fdt);
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fclose(fd);
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if (rename(tmpfilename, lease_file) < 0) {
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syslog(LOG_ERR, "could not rename temporary lease file to %s", lease_file);
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remove(tmpfilename);
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}
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return 0;
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}
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/* reload_from_lease_file()
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* read lease_file and add the rules contained
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*/
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int reload_from_lease_file()
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{
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FILE * fd;
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char * p;
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unsigned short eport, iport;
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char * proto;
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char * iaddr;
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char * desc;
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char * rhost;
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unsigned int leaseduration;
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unsigned int timestamp;
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time_t current_time;
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#ifndef LEASEFILE_USE_REMAINING_TIME
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time_t current_unix_time;
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#endif
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char line[128];
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int r;
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if(!lease_file) return -1;
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fd = fopen( lease_file, "r");
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if (fd==NULL) {
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syslog(LOG_ERR, "could not open lease file: %s", lease_file);
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return -1;
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}
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if(unlink(lease_file) < 0) {
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syslog(LOG_WARNING, "could not unlink file %s : %m", lease_file);
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}
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current_time = upnp_time();
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#ifndef LEASEFILE_USE_REMAINING_TIME
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current_unix_time = time(NULL);
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#endif
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while(fgets(line, sizeof(line), fd)) {
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syslog(LOG_DEBUG, "parsing lease file line '%s'", line);
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proto = line;
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p = strchr(line, ':');
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if(!p) {
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syslog(LOG_ERR, "unrecognized data in lease file");
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continue;
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}
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*(p++) = '\0';
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iaddr = strchr(p, ':');
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if(!iaddr) {
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syslog(LOG_ERR, "unrecognized data in lease file");
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continue;
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}
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*(iaddr++) = '\0';
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eport = (unsigned short)atoi(p);
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p = strchr(iaddr, ':');
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if(!p) {
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syslog(LOG_ERR, "unrecognized data in lease file");
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continue;
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}
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*(p++) = '\0';
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iport = (unsigned short)atoi(p);
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p = strchr(p, ':');
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if(!p) {
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syslog(LOG_ERR, "unrecognized data in lease file");
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continue;
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}
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*(p++) = '\0';
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desc = strchr(p, ':');
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if(!desc) {
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syslog(LOG_ERR, "unrecognized data in lease file");
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continue;
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}
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*(desc++) = '\0';
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/*timestamp = (unsigned int)atoi(p);*/
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timestamp = (unsigned int)strtoul(p, NULL, 10);
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/* trim description */
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while(isspace(*desc))
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desc++;
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p = desc;
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while(*(p+1))
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p++;
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while(isspace(*p) && (p > desc))
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*(p--) = '\0';
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if(timestamp > 0) {
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#ifdef LEASEFILE_USE_REMAINING_TIME
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leaseduration = timestamp;
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timestamp += current_time; /* convert to our time */
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#else
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if(timestamp <= (unsigned int)current_unix_time) {
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syslog(LOG_NOTICE, "already expired lease in lease file");
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continue;
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} else {
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leaseduration = timestamp - current_unix_time;
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timestamp = leaseduration + current_time; /* convert to our time */
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}
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#endif
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} else {
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leaseduration = 0; /* default value */
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}
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rhost = NULL;
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r = upnp_redirect(rhost, eport, iaddr, iport, proto, desc, leaseduration);
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if(r == -1) {
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syslog(LOG_ERR, "Failed to redirect %hu -> %s:%hu protocol %s",
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eport, iaddr, iport, proto);
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} else if(r == -2) {
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/* Add the redirection again to the lease file */
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lease_file_add(eport, iaddr, iport, proto_atoi(proto),
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desc, timestamp);
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}
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}
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fclose(fd);
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return 0;
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}
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#ifdef LEASEFILE_USE_REMAINING_TIME
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void lease_file_rewrite(void)
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{
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int index;
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unsigned short eport, iport;
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int proto;
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char iaddr[32];
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char desc[64];
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char rhost[40];
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unsigned int timestamp;
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if (lease_file == NULL) return;
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remove(lease_file);
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for(index = 0; ; index++) {
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if(get_redirect_rule_by_index(index, 0/*ifname*/, &eport, iaddr, sizeof(iaddr),
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&iport, &proto, desc, sizeof(desc),
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rhost, sizeof(rhost), ×tamp,
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0, 0) < 0)
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break;
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if(lease_file_add(eport, iaddr, iport, proto, desc, timestamp) < 0)
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break;
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}
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}
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#endif
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#endif
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/* upnp_redirect()
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* calls OS/fw dependent implementation of the redirection.
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* protocol should be the string "TCP" or "UDP"
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* returns: 0 on success
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* -1 failed to redirect
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* -2 already redirected
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* -3 permission check failed
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* -4 already redirected (other mechanism)
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*/
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int
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upnp_redirect(const char * rhost, unsigned short eport,
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const char * iaddr, unsigned short iport,
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const char * protocol, const char * desc,
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unsigned int leaseduration)
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{
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int proto, r;
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char iaddr_old[32];
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char rhost_old[32];
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unsigned short iport_old;
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struct in_addr address;
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unsigned int timestamp;
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proto = proto_atoi(protocol);
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if(inet_aton(iaddr, &address) <= 0) {
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syslog(LOG_ERR, "inet_aton(%s) FAILED", iaddr);
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return -1;
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}
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if(!check_upnp_rule_against_permissions(upnppermlist, num_upnpperm,
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eport, address, iport, desc)) {
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syslog(LOG_INFO, "redirection permission check failed for "
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"%hu->%s:%hu %s %s", eport, iaddr, iport, protocol, desc);
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return -3;
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}
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if (desc == NULL)
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desc = ""; /* assume empty description */
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/* IGDv1 (WANIPConnection:1 Service Template Version 1.01 / Nov 12, 2001)
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* - 2.2.20.PortMappingDescription :
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* Overwriting Previous / Existing Port Mappings:
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* If the RemoteHost, ExternalPort, PortMappingProtocol and InternalClient
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* are exactly the same as an existing mapping, the existing mapping values
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* for InternalPort, PortMappingDescription, PortMappingEnabled and
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* PortMappingLeaseDuration are overwritten.
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* Rejecting a New Port Mapping:
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* In cases where the RemoteHost, ExternalPort and PortMappingProtocol
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* are the same as an existing mapping, but the InternalClient is
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* different, the action is rejected with an appropriate error.
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* Add or Reject New Port Mapping behavior based on vendor implementation:
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* In cases where the ExternalPort, PortMappingProtocol and InternalClient
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* are the same, but RemoteHost is different, the vendor can choose to
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* support both mappings simultaneously, or reject the second mapping
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* with an appropriate error.
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*
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* - 2.4.16.AddPortMapping
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* This action creates a new port mapping or overwrites an existing
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* mapping with the same internal client. If the ExternalPort and
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* PortMappingProtocol pair is already mapped to another internal client,
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* an error is returned.
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*
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* IGDv2 (WANIPConnection:2 Service Standardized DCP (SDCP) Sep 10, 2010)
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* Protocol ExternalPort RemoteHost InternalClient Result
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* = = ≠ ≠ Failure
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* = = ≠ = Failure or success
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* (vendor specific)
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* = = = ≠ Failure
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* = = = = Success (overwrite)
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*/
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rhost_old[0] = '\0';
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r = get_redirect_rule(ext_if_name, eport, proto,
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iaddr_old, sizeof(iaddr_old), &iport_old, 0, 0,
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rhost_old, sizeof(rhost_old),
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×tamp, 0, 0);
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if(r == 0) {
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if(strcmp(iaddr, iaddr_old)==0 &&
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((rhost == NULL && rhost_old[0]=='\0') ||
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(rhost && (strcmp(rhost, "*") == 0) && rhost_old[0]=='\0') ||
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(rhost && (strcmp(rhost, rhost_old) == 0)))) {
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syslog(LOG_INFO, "updating existing port mapping %hu %s (rhost '%s') => %s:%hu",
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eport, protocol, rhost_old, iaddr_old, iport_old);
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timestamp = (leaseduration > 0) ? upnp_time() + leaseduration : 0;
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if(iport != iport_old) {
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r = update_portmapping(ext_if_name, eport, proto, iport, desc, timestamp);
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} else {
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r = update_portmapping_desc_timestamp(ext_if_name, eport, proto, desc, timestamp);
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}
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#ifdef ENABLE_LEASEFILE
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if(r == 0) {
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lease_file_remove(eport, proto);
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lease_file_add(eport, iaddr, iport, proto, desc, timestamp);
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}
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#endif /* ENABLE_LEASEFILE */
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return r;
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} else {
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syslog(LOG_INFO, "port %hu %s (rhost '%s') already redirected to %s:%hu",
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eport, protocol, rhost_old, iaddr_old, iport_old);
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return -2;
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}
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#ifdef CHECK_PORTINUSE
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} else if (port_in_use(ext_if_name, eport, proto, iaddr, iport) > 0) {
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syslog(LOG_INFO, "port %hu protocol %s already in use",
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eport, protocol);
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return -4;
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#endif /* CHECK_PORTINUSE */
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} else {
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timestamp = (leaseduration > 0) ? upnp_time() + leaseduration : 0;
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syslog(LOG_INFO, "redirecting port %hu to %s:%hu protocol %s for: %s",
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eport, iaddr, iport, protocol, desc);
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return upnp_redirect_internal(rhost, eport, iaddr, iport, proto,
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desc, timestamp);
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}
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}
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int
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upnp_redirect_internal(const char * rhost, unsigned short eport,
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const char * iaddr, unsigned short iport,
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int proto, const char * desc,
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unsigned int timestamp)
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{
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/*syslog(LOG_INFO, "redirecting port %hu to %s:%hu protocol %s for: %s",
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eport, iaddr, iport, protocol, desc); */
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if(disable_port_forwarding)
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return -1;
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if(add_redirect_rule2(ext_if_name, rhost, eport, iaddr, iport, proto,
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desc, timestamp) < 0) {
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return -1;
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}
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#ifdef ENABLE_LEASEFILE
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lease_file_add( eport, iaddr, iport, proto, desc, timestamp);
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#endif
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/* syslog(LOG_INFO, "creating pass rule to %s:%hu protocol %s for: %s",
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iaddr, iport, protocol, desc);*/
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if(add_filter_rule2(ext_if_name, rhost, iaddr, eport, iport, proto, desc) < 0) {
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/* clean up the redirect rule */
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#if !defined(__linux__)
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delete_redirect_rule(ext_if_name, eport, proto);
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#endif
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return -1;
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}
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if(timestamp > 0) {
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if(!nextruletoclean_timestamp || (timestamp < nextruletoclean_timestamp))
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nextruletoclean_timestamp = timestamp;
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}
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#ifdef ENABLE_EVENTS
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/* the number of port mappings changed, we must
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* inform the subscribers */
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upnp_event_var_change_notify(EWanIPC);
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#endif
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return 0;
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}
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/* Firewall independent code which call the FW dependent code. */
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int
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upnp_get_redirection_infos(unsigned short eport, const char * protocol,
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unsigned short * iport,
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char * iaddr, int iaddrlen,
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char * desc, int desclen,
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char * rhost, int rhostlen,
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unsigned int * leaseduration)
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{
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int r;
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unsigned int timestamp;
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time_t current_time;
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if(desc && (desclen > 0))
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desc[0] = '\0';
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if(rhost && (rhostlen > 0))
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rhost[0] = '\0';
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r = get_redirect_rule(ext_if_name, eport, proto_atoi(protocol),
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iaddr, iaddrlen, iport, desc, desclen,
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rhost, rhostlen, ×tamp,
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0, 0);
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if(r == 0 &&
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timestamp > 0 &&
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timestamp > (unsigned int)(current_time = upnp_time())) {
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*leaseduration = timestamp - current_time;
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} else {
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*leaseduration = 0;
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}
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return r;
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}
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int
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upnp_get_redirection_infos_by_index(int index,
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|
unsigned short * eport, char * protocol,
|
|
unsigned short * iport,
|
|
char * iaddr, int iaddrlen,
|
|
char * desc, int desclen,
|
|
char * rhost, int rhostlen,
|
|
unsigned int * leaseduration)
|
|
{
|
|
/*char ifname[IFNAMSIZ];*/
|
|
int proto = 0;
|
|
unsigned int timestamp;
|
|
time_t current_time;
|
|
|
|
if(desc && (desclen > 0))
|
|
desc[0] = '\0';
|
|
if(rhost && (rhostlen > 0))
|
|
rhost[0] = '\0';
|
|
if(get_redirect_rule_by_index(index, 0/*ifname*/, eport, iaddr, iaddrlen,
|
|
iport, &proto, desc, desclen,
|
|
rhost, rhostlen, ×tamp,
|
|
0, 0) < 0)
|
|
return -1;
|
|
else
|
|
{
|
|
current_time = upnp_time();
|
|
*leaseduration = (timestamp > (unsigned int)current_time)
|
|
? (timestamp - current_time)
|
|
: 0;
|
|
if(proto == IPPROTO_TCP)
|
|
memcpy(protocol, "TCP", 4);
|
|
#ifdef IPPROTO_UDPLITE
|
|
else if(proto == IPPROTO_UDPLITE)
|
|
memcpy(protocol, "UDPLITE", 8);
|
|
#endif /* IPPROTO_UDPLITE */
|
|
else
|
|
memcpy(protocol, "UDP", 4);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/* called from natpmp.c too */
|
|
int
|
|
_upnp_delete_redir(unsigned short eport, int proto)
|
|
{
|
|
int r;
|
|
#if defined(__linux__)
|
|
r = delete_redirect_and_filter_rules(eport, proto);
|
|
#elif defined(USE_PF)
|
|
r = delete_redirect_and_filter_rules(ext_if_name, eport, proto);
|
|
#else
|
|
r = delete_redirect_rule(ext_if_name, eport, proto);
|
|
delete_filter_rule(ext_if_name, eport, proto);
|
|
#endif
|
|
#ifdef ENABLE_LEASEFILE
|
|
lease_file_remove( eport, proto);
|
|
#endif
|
|
|
|
#ifdef ENABLE_EVENTS
|
|
upnp_event_var_change_notify(EWanIPC);
|
|
#endif
|
|
return r;
|
|
}
|
|
|
|
int
|
|
upnp_delete_redirection(unsigned short eport, const char * protocol)
|
|
{
|
|
syslog(LOG_INFO, "removing redirect rule port %hu %s", eport, protocol);
|
|
return _upnp_delete_redir(eport, proto_atoi(protocol));
|
|
}
|
|
|
|
/* upnp_get_portmapping_number_of_entries() */
|
|
int
|
|
upnp_get_portmapping_number_of_entries()
|
|
{
|
|
#if defined(USE_PF) || defined(USE_NFTABLES)
|
|
return get_redirect_rule_count(ext_if_name);
|
|
#else
|
|
int n = 0, r = 0;
|
|
unsigned short eport, iport;
|
|
char protocol[8], iaddr[32], desc[64], rhost[32];
|
|
unsigned int leaseduration;
|
|
do {
|
|
protocol[0] = '\0'; iaddr[0] = '\0'; desc[0] = '\0';
|
|
r = upnp_get_redirection_infos_by_index(n, &eport, protocol, &iport,
|
|
iaddr, sizeof(iaddr),
|
|
desc, sizeof(desc),
|
|
rhost, sizeof(rhost),
|
|
&leaseduration);
|
|
n++;
|
|
} while(r==0);
|
|
return (n-1);
|
|
#endif
|
|
}
|
|
|
|
/* functions used to remove unused rules
|
|
* As a side effect, delete expired rules (based on LeaseDuration) */
|
|
struct rule_state *
|
|
get_upnp_rules_state_list(int max_rules_number_target)
|
|
{
|
|
/*char ifname[IFNAMSIZ];*/
|
|
int proto;
|
|
unsigned short iport;
|
|
unsigned int timestamp;
|
|
struct rule_state * tmp;
|
|
struct rule_state * list = 0;
|
|
struct rule_state * * p;
|
|
int i = 0;
|
|
time_t current_time;
|
|
|
|
/*ifname[0] = '\0';*/
|
|
tmp = malloc(sizeof(struct rule_state));
|
|
if(!tmp)
|
|
return 0;
|
|
current_time = upnp_time();
|
|
nextruletoclean_timestamp = 0;
|
|
while(get_redirect_rule_by_index(i, /*ifname*/0, &tmp->eport, 0, 0,
|
|
&iport, &proto, 0, 0, 0,0, ×tamp,
|
|
&tmp->packets, &tmp->bytes) >= 0)
|
|
{
|
|
tmp->to_remove = 0;
|
|
if(timestamp > 0) {
|
|
/* need to remove this port mapping ? */
|
|
if(timestamp <= (unsigned int)current_time)
|
|
tmp->to_remove = 1;
|
|
else if((nextruletoclean_timestamp <= (unsigned int)current_time)
|
|
|| (timestamp < nextruletoclean_timestamp))
|
|
nextruletoclean_timestamp = timestamp;
|
|
}
|
|
tmp->proto = (short)proto;
|
|
/* add tmp to list */
|
|
tmp->next = list;
|
|
list = tmp;
|
|
/* prepare next iteration */
|
|
i++;
|
|
tmp = malloc(sizeof(struct rule_state));
|
|
if(!tmp)
|
|
break;
|
|
}
|
|
#ifdef PCP_PEER
|
|
i=0;
|
|
while(get_peer_rule_by_index(i, /*ifname*/0, &tmp->eport, 0, 0,
|
|
&iport, &proto, 0, 0, 0,0,0, ×tamp,
|
|
&tmp->packets, &tmp->bytes) >= 0)
|
|
{
|
|
tmp->to_remove = 0;
|
|
if(timestamp > 0) {
|
|
/* need to remove this port mapping ? */
|
|
if(timestamp <= (unsigned int)current_time)
|
|
tmp->to_remove = 1;
|
|
else if((nextruletoclean_timestamp <= (unsigned int)current_time)
|
|
|| (timestamp < nextruletoclean_timestamp))
|
|
nextruletoclean_timestamp = timestamp;
|
|
}
|
|
tmp->proto = (short)proto;
|
|
/* add tmp to list */
|
|
tmp->next = list;
|
|
list = tmp;
|
|
/* prepare next iteration */
|
|
i++;
|
|
tmp = malloc(sizeof(struct rule_state));
|
|
if(!tmp)
|
|
break;
|
|
}
|
|
#endif
|
|
free(tmp);
|
|
/* remove the redirections that need to be removed */
|
|
for(p = &list, tmp = list; tmp; tmp = *p)
|
|
{
|
|
if(tmp->to_remove)
|
|
{
|
|
syslog(LOG_NOTICE, "remove port mapping %hu %s because it has expired",
|
|
tmp->eport, proto_itoa(tmp->proto));
|
|
_upnp_delete_redir(tmp->eport, tmp->proto);
|
|
*p = tmp->next;
|
|
free(tmp);
|
|
i--;
|
|
} else {
|
|
p = &(tmp->next);
|
|
}
|
|
}
|
|
/* return empty list if not enough redirections */
|
|
if(i<=max_rules_number_target)
|
|
while(list)
|
|
{
|
|
tmp = list;
|
|
list = tmp->next;
|
|
free(tmp);
|
|
}
|
|
/* return list */
|
|
return list;
|
|
}
|
|
|
|
void
|
|
remove_unused_rules(struct rule_state * list)
|
|
{
|
|
char ifname[IFNAMSIZ];
|
|
unsigned short iport;
|
|
struct rule_state * tmp;
|
|
u_int64_t packets;
|
|
u_int64_t bytes;
|
|
unsigned int timestamp;
|
|
int n = 0;
|
|
|
|
while(list)
|
|
{
|
|
/* remove the rule if no traffic has used it */
|
|
if(get_redirect_rule(ifname, list->eport, list->proto,
|
|
0, 0, &iport, 0, 0, 0, 0, ×tamp,
|
|
&packets, &bytes) >= 0)
|
|
{
|
|
if(packets == list->packets && bytes == list->bytes)
|
|
{
|
|
syslog(LOG_DEBUG, "removing unused mapping %hu %s : still "
|
|
"%" PRIu64 "packets %" PRIu64 "bytes",
|
|
list->eport, proto_itoa(list->proto),
|
|
packets, bytes);
|
|
_upnp_delete_redir(list->eport, list->proto);
|
|
n++;
|
|
}
|
|
}
|
|
tmp = list;
|
|
list = tmp->next;
|
|
free(tmp);
|
|
}
|
|
if(n>0)
|
|
syslog(LOG_NOTICE, "removed %d unused rules", n);
|
|
}
|
|
|
|
/* upnp_get_portmappings_in_range()
|
|
* return a list of all "external" ports for which a port
|
|
* mapping exists */
|
|
unsigned short *
|
|
upnp_get_portmappings_in_range(unsigned short startport,
|
|
unsigned short endport,
|
|
const char * protocol,
|
|
unsigned int * number)
|
|
{
|
|
int proto;
|
|
proto = proto_atoi(protocol);
|
|
if(!number)
|
|
return NULL;
|
|
return get_portmappings_in_range(startport, endport, proto, number);
|
|
}
|
|
|
|
/* stuff for miniupnpdctl */
|
|
#ifdef USE_MINIUPNPDCTL
|
|
void
|
|
write_ruleset_details(int s)
|
|
{
|
|
int proto = 0;
|
|
unsigned short eport, iport;
|
|
char desc[64];
|
|
char iaddr[32];
|
|
char rhost[32];
|
|
unsigned int timestamp;
|
|
u_int64_t packets;
|
|
u_int64_t bytes;
|
|
int i = 0;
|
|
char buffer[256];
|
|
int n;
|
|
|
|
write(s, "Ruleset :\n", 10);
|
|
while(get_redirect_rule_by_index(i, 0/*ifname*/, &eport, iaddr, sizeof(iaddr),
|
|
&iport, &proto, desc, sizeof(desc),
|
|
rhost, sizeof(rhost),
|
|
×tamp,
|
|
&packets, &bytes) >= 0)
|
|
{
|
|
n = snprintf(buffer, sizeof(buffer),
|
|
"%2d %s %s:%hu->%s:%hu "
|
|
"'%s' %u %" PRIu64 " %" PRIu64 "\n",
|
|
/*"'%s' %llu %llu\n",*/
|
|
i, proto_itoa(proto), rhost,
|
|
eport, iaddr, iport, desc, timestamp, packets, bytes);
|
|
write(s, buffer, n);
|
|
i++;
|
|
}
|
|
}
|
|
#endif
|