50 lines
1.1 KiB
C
50 lines
1.1 KiB
C
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/*
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* $smu-mark$
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* $name: sendhcmp.c$
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* $author: Salvatore Sanfilippo <antirez@invece.org>$
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* $copyright: Copyright (C) 1999 by Salvatore Sanfilippo$
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* $license: This software is under GPL version 2 of license$
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* $date: Fri Nov 5 11:55:49 MET 1999$
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* $rev: 4$
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*/
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#include <string.h>
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#include <assert.h>
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#include <unistd.h>
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#include <signal.h> /* SIGALARM macro */
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#include "hping2.h"
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#include "globals.h"
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#define MUST_BE_UNREACHED 0
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void send_hcmp(__u8 type, __u32 arg)
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{
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static struct hcmphdr hcmph; /* static because we export this */
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/* to data_handler() */
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data_size = signlen + sizeof(struct hcmphdr);
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/* build hcmp header */
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memset(&hcmph, 0, sizeof(hcmph));
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hcmph.type = type;
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switch (type)
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{
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case HCMP_RESTART:
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hcmph.typedep.seqnum = htons((__u16) arg);
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break;
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case HCMP_SOURCE_QUENCH:
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case HCMP_SOURCE_STIRUP:
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hcmph.typedep.usec = htonl(arg);
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break;
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default:
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assert(MUST_BE_UNREACHED);
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}
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/* use hcmphdr_p to transmit hcmph to data_handler() */
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hcmphdr_p = &hcmph;
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kill(getpid(), SIGALRM); /* send hcmp */
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return;
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}
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