xenet.cpp File Reference

#include <stdlib.h>
#include <sys/netdb.h>
#include <sys/socket.h>
#include <string.h>
#include <arpa/inet.h>
#include <sys/iocodes.h>
#include <stdio.h>
#include <sys/_keproc.h>
#include <sys/_kefile.h>
#include <sys/_ketime.h>
#include <stdint.h>

Include dependency graph for xenet.cpp:

Classes
struct	XeDnsAddr
struct	XeDnsResult
struct	XeDnsCacheEntry

Macros
#define	DNS_QTYPE_A   1
#define	DNS_QTYPE_AAAA   28
#define	DNS_QCLASS_IN   1
#define	DNS_TIMEOUT_MS   3000
#define	DNS_POLL_MS   100
#define	DNS_ROUTE_WAIT_MS   10000 /* wait for DHCP default route */
#define	DNS_ROUTE_RETRY_MS   500
#define	DNS_MAX_ADDRS   8
#define	DNS_CACHE_SLOTS   32
#define	DNS_NAME_MAX   256
#define	DNS_TTL_CAP_S   60
#define	DNS_NEG_TTL_S   5

Functions
int	xe_hosts_lookup (const char *name, int *out_n, int *out_families, uint8_t out_addrs[][16], int maxn)
ssize_t	recv (int sockfd, void *buf, size_t len, int flags)
ssize_t	recvfrom (int sockfd, void *buf, size_t len, int flags, struct sockaddr *src_addr, socklen_t *addrlen)
ssize_t	sendto (int sockfd, const void *buf, size_t len, int flags, const struct sockaddr *dest_addr, socklen_t addrlen)
uint32_t	xe_dns_last_server (void)
struct hostent *	gethostbyname (const char *name)
void	freeaddrinfo (addrinfo *res)
const char *	gai_strerror (int errcode)
int	getaddrinfo (const char *node, const char *service, const addrinfo *hints, addrinfo **res)

Macro Definition Documentation

DNS_CACHE_SLOTS

#define DNS_CACHE_SLOTS   32

DNS_MAX_ADDRS

#define DNS_MAX_ADDRS   8

DNS_NAME_MAX

#define DNS_NAME_MAX   256

DNS_NEG_TTL_S

#define DNS_NEG_TTL_S   5

DNS_POLL_MS

#define DNS_POLL_MS   100

DNS_QCLASS_IN

#define DNS_QCLASS_IN   1

DNS_QTYPE_A

#define DNS_QTYPE_A   1

DNS_QTYPE_AAAA

#define DNS_QTYPE_AAAA   28

DNS_ROUTE_RETRY_MS

#define DNS_ROUTE_RETRY_MS   500

DNS_ROUTE_WAIT_MS

#define DNS_ROUTE_WAIT_MS   10000 /* wait for DHCP default route */

DNS_TIMEOUT_MS

#define DNS_TIMEOUT_MS   3000

DNS_TTL_CAP_S

#define DNS_TTL_CAP_S   60

Function Documentation

freeaddrinfo()

void freeaddrinfo

(

addrinfo *

res

)

gai_strerror()

const char * gai_strerror

(

int

errcode

)

getaddrinfo()

int getaddrinfo	(	const char *	node,
		const char *	service,
		const addrinfo *	hints,
		addrinfo **	res
	)

gethostbyname()

struct hostent * gethostbyname

(

const char *

name

)

recv()

ssize_t recv	(	int	sockfd,
		void *	buf,
		size_t	len,
		int	flags
	)

recvfrom()

ssize_t recvfrom	(	int	sockfd,
		void *	buf,
		size_t	len,
		int	flags,
		struct sockaddr *	src_addr,
		socklen_t *	addrlen
	)

sendto()

ssize_t sendto	(	int	sockfd,
		const void *	buf,
		size_t	len,
		int	flags,
		const struct sockaddr *	dest_addr,
		socklen_t	addrlen
	)

xe_dns_last_server()

uint32_t xe_dns_last_server

(

void

)

xe_hosts_lookup()

int xe_hosts_lookup ( const char *  name, int *  out_n, int *  out_families, uint8_t  out_addrs[][16], int  maxn  )

extern

BSD 2-Clause License

Copyright (c) 2022-2024, Manas Kamal Choudhury All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

xe_hosts_lookup – resolve from the static XR/localhost table.

Returns

1 hit (fills out_*), 0 not special (continue to DNS), -1 .localhost with no entry (fail locally, no upstream)