miniupnp/miniupnpd/upnppermissions.h

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/* $Id: upnppermissions.h,v 1.14 2023/02/11 23:02:17 nanard Exp $ */
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/* MiniUPnP project
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* http://miniupnp.free.fr/ or https://miniupnp.tuxfamily.org/
* (c) 2006-2023 Thomas Bernard
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* This software is subject to the conditions detailed
* in the LICENCE file provided within the distribution */
#ifndef UPNPPERMISSIONS_H_INCLUDED
#define UPNPPERMISSIONS_H_INCLUDED
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#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include "config.h"
#ifdef ENABLE_REGEX
#include <regex.h>
#endif
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/* UPnP permission rule samples:
* allow 1024-65535 192.168.3.0/24 1024-65535
* deny 0-65535 192.168.1.125/32 0-65535 */
struct upnpperm {
enum {UPNPPERM_ALLOW=1, UPNPPERM_DENY=2 } type;
/* is it an allow or deny permission rule ? */
u_short eport_min, eport_max; /* external port range */
struct in_addr address, mask; /* ip/mask */
u_short iport_min, iport_max; /* internal port range */
char * re;
#ifdef ENABLE_REGEX
regex_t regex; /* matching regex */
#endif
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};
/* read_permission_line()
* returns: 0 line read okay
* -1 error reading line
*
* line sample :
* allow 1024-65535 192.168.3.0/24 1024-65535
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* allow 22 192.168.4.33/32 22
* deny 0-65535 0.0.0.0/0 0-65535 */
int
read_permission_line(struct upnpperm * perm,
char * p);
void
free_permission_line(struct upnpperm * perm);
/* check_upnp_rule_against_permissions()
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* returns: 0 if the upnp rule should be rejected,
* 1 if it could be accepted */
int
check_upnp_rule_against_permissions(const struct upnpperm * permary,
int n_perms,
u_short eport, struct in_addr address,
u_short iport, const char * desc);
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/**
* Build an array of all allowed external ports (for the address and internal port)
*/
void
get_permitted_ext_ports(uint32_t * allowed,
const struct upnpperm * permary, int n_perms,
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in_addr_t addr, u_short iport);
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#ifdef USE_MINIUPNPDCTL
void
write_permlist(int fd, const struct upnpperm * permary,
int nperms);
#endif
#endif