mirror of
https://github.com/bol-van/zapret.git
synced 2024-11-14 18:48:33 +05:00
113 lines
3.3 KiB
C
113 lines
3.3 KiB
C
#pragma once
|
|
|
|
#include <stddef.h>
|
|
#include <stdbool.h>
|
|
#include <netinet/in.h>
|
|
#include <sys/socket.h>
|
|
#include <netdb.h>
|
|
#include <stdio.h>
|
|
#include <time.h>
|
|
|
|
// this saves memory. sockaddr_storage is larger than required. it can be 128 bytes. sockaddr_in6 is 28 bytes.
|
|
typedef union
|
|
{
|
|
struct sockaddr_in sa4; // size 16
|
|
struct sockaddr_in6 sa6; // size 28
|
|
} sockaddr_in46;
|
|
|
|
void rtrim(char *s);
|
|
char *strncasestr(const char *s,const char *find, size_t slen);
|
|
|
|
bool append_to_list_file(const char *filename, const char *s);
|
|
|
|
void ntop46(const struct sockaddr *sa, char *str, size_t len);
|
|
void ntop46_port(const struct sockaddr *sa, char *str, size_t len);
|
|
void print_sockaddr(const struct sockaddr *sa);
|
|
void print_addrinfo(const struct addrinfo *ai);
|
|
bool check_local_ip(const struct sockaddr *saddr);
|
|
|
|
bool saismapped(const struct sockaddr_in6 *sa);
|
|
bool samappedcmp(const struct sockaddr_in *sa1,const struct sockaddr_in6 *sa2);
|
|
bool sacmp(const struct sockaddr *sa1,const struct sockaddr *sa2);
|
|
uint16_t saport(const struct sockaddr *sa);
|
|
// true = was converted
|
|
bool saconvmapped(struct sockaddr_storage *a);
|
|
|
|
void sacopy(struct sockaddr_storage *sa_dest, const struct sockaddr *sa);
|
|
void sa46copy(sockaddr_in46 *sa_dest, const struct sockaddr *sa);
|
|
|
|
bool is_localnet(const struct sockaddr *a);
|
|
bool is_linklocal(const struct sockaddr_in6* a);
|
|
bool is_private6(const struct sockaddr_in6* a);
|
|
|
|
bool set_keepalive(int fd);
|
|
bool set_ttl(int fd, int ttl);
|
|
bool set_hl(int fd, int hl);
|
|
bool set_ttl_hl(int fd, int ttl);
|
|
int get_so_error(int fd);
|
|
|
|
// alignment-safe functions
|
|
static inline uint16_t pntoh16(const uint8_t *p) {
|
|
return ((uint16_t)p[0] << 8) | (uint16_t)p[1];
|
|
}
|
|
static inline void phton16(uint8_t *p, uint16_t v) {
|
|
p[0] = (uint8_t)(v>>8);
|
|
p[1] = (uint8_t)v;
|
|
}
|
|
|
|
int fprint_localtime(FILE *F);
|
|
|
|
time_t file_mod_time(const char *filename);
|
|
|
|
typedef struct
|
|
{
|
|
uint16_t from,to;
|
|
bool neg;
|
|
} port_filter;
|
|
bool pf_in_range(uint16_t port, const port_filter *pf);
|
|
bool pf_parse(const char *s, port_filter *pf);
|
|
bool pf_is_empty(const port_filter *pf);
|
|
|
|
#ifndef IN_LOOPBACK
|
|
#define IN_LOOPBACK(a) ((((uint32_t) (a)) & 0xff000000) == 0x7f000000)
|
|
#endif
|
|
|
|
#ifdef __GNUC__
|
|
#define IN6_EXTRACT_MAP4(a) \
|
|
(__extension__ \
|
|
({ const struct in6_addr *__a = (const struct in6_addr *) (a); \
|
|
(((const uint32_t *) (__a))[3]); }))
|
|
#else
|
|
#define IN6_EXTRACT_MAP4(a) (((const uint32_t *) (a))[3])
|
|
#endif
|
|
|
|
|
|
struct cidr4
|
|
{
|
|
struct in_addr addr;
|
|
uint8_t preflen;
|
|
};
|
|
struct cidr6
|
|
{
|
|
struct in6_addr addr;
|
|
uint8_t preflen;
|
|
};
|
|
void str_cidr4(char *s, size_t s_len, const struct cidr4 *cidr);
|
|
void print_cidr4(const struct cidr4 *cidr);
|
|
void str_cidr6(char *s, size_t s_len, const struct cidr6 *cidr);
|
|
void print_cidr6(const struct cidr6 *cidr);
|
|
bool parse_cidr4(char *s, struct cidr4 *cidr);
|
|
bool parse_cidr6(char *s, struct cidr6 *cidr);
|
|
|
|
static inline uint32_t mask_from_preflen(uint32_t preflen)
|
|
{
|
|
return preflen ? preflen<32 ? ~((1 << (32-preflen)) - 1) : 0xFFFFFFFF : 0;
|
|
}
|
|
void ip6_and(const struct in6_addr * restrict a, const struct in6_addr * restrict b, struct in6_addr * restrict result);
|
|
extern struct in6_addr ip6_mask[129];
|
|
void mask_from_preflen6_prepare(void);
|
|
static inline const struct in6_addr *mask_from_preflen6(uint8_t preflen)
|
|
{
|
|
return ip6_mask+preflen;
|
|
}
|