52 lines
1.5 KiB
C
52 lines
1.5 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* ip.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: jhalford <jack@crans.org> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2017/10/24 17:22:16 by jhalford #+# #+# */
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/* Updated: 2017/10/24 21:36:52 by jhalford ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "nmap.h"
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/*
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** some libmill ip extensions
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*/
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uint16_t ipport(ipaddr ip)
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{
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return (ntohs(((struct sockaddr_in*)&ip)->sin_port));
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}
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uint16_t ipfamily(ipaddr ip)
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{
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return (((struct sockaddr*)&ip)->sa_family);
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}
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uint16_t ipmode(ipaddr ip)
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{
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if (((struct sockaddr*)&ip)->sa_family == AF_INET)
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return (IPADDR_IPV4);
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else
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return (IPADDR_IPV6);
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}
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ipaddr iplocal_randport(const char *name, int mode, int sock)
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{
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unsigned short port;
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ipaddr ip;
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port = 49152;
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while (port < 65535)
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{
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ip = iplocal(name, port, mode);
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if (bind(sock, (struct sockaddr*)&ip, sizeof(ip)) == 0)
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return (ip);
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++port;
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}
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errno = EBUSY;
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return (ip);
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}
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