mirror of
https://github.com/freebsd/freebsd-src.git
synced 2024-11-30 21:43:34 +00:00
Source cleanup: prototypes, varargs, POSIXification, getopts, -Wall clean.
Bugfixes: no longer stomps it's argv causing ps to change the string. Unfortunately, Bill Fenner and I have overlapping changes here...
This commit is contained in:
Peter Wemm
parent
34da58488d
commit
8ae4b5d0af
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=13493
@ -48,6 +48,16 @@
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#include <string.h>
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#include <syslog.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <err.h>
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#include <sys/cdefs.h>
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#if __STDC__
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#include <stdarg.h>
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#else
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#include <varargs.h>
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#endif
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/*
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* TBD
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@ -55,30 +65,12 @@
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* address.
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*/
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char *malloc();
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void exit();
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long gethostid();
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long random();
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time_t time();
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long strtol();
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#ifdef lint
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#define ALLIGN(ptr) (ptr ? 0 : 0)
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#else
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#define ALLIGN(ptr) (ptr)
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#endif
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#ifdef SYSV
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#define signal(s,f) sigset(s,f)
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#define random() rand()
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#endif
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void solicitor(), advertise(), pr_pack(), init();
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void bzero(), initlog(), logerr(), logtrace(), logdebug(), logperror();
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void age_table(), record_router(), add_route(), del_route(), rtioctl();
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int support_multicast(), sendbcast(), sendmcast(), sendbcastif(), sendmcastif();
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int ismulticast(), isbroadcast(), in_cksum(), is_directly_connected();
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static int join();
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#define ICMP_ROUTER_ADVERTISEMENT 9
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#define ICMP_ROUTER_SOLICITATION 10
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@ -120,8 +112,6 @@ int interfaces_size; /* Number of elements in interfaces */
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#define MAXPACKET 4096 /* max packet size */
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u_char packet[MAXPACKET];
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/* fraser */
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int debugfile;
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char usage[] =
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"Usage: rdisc [-s] [-v] [-f] [-a] [send_address] [receive_address]\n\
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rdisc -r [-v] [-p <preference>] [-T <secs>] \n\
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@ -158,11 +148,45 @@ int best_preference = 1; /* Set to record only the router(s) with the
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best preference in the kernel. Not set
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puts all routes in the kernel. */
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/* Prototypes */
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void do_fork __P((void));
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int main __P((int, char **));
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void timer __P((int));
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void solicitor __P((struct sockaddr_in *));
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void advertise __P((struct sockaddr_in *));
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char * pr_type __P((int));
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char * pr_name __P((struct in_addr));
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void pr_pack __P((char *, int, struct sockaddr_in *));
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int in_cksum __P((u_short *, int));
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void finish __P((int));
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int isbroadcast __P((struct sockaddr_in *));
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int ismulticast __P((struct sockaddr_in *));
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int sendbcast __P((int, char *, int));
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int sendbcastif __P((int, char *, int, struct interface *));
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int sendmcast __P((int, char *, int, struct sockaddr_in *));
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int sendmcastif __P((int, char *, int, struct sockaddr_in *, struct interface *));
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void init __P((void));
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void initifs __P((int));
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int support_multicast __P((void));
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int is_directly_connected __P((struct in_addr));
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struct table * find_router __P((struct in_addr));
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int max_preference __P((void));
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void age_table __P((int));
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void record_router __P((struct in_addr, long, int));
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void add_route __P((struct in_addr));
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void del_route __P((struct in_addr));
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void rtioctl __P((struct in_addr, int));
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void initlog __P((void));
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void logerr __P((char *fmt, ...));
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void logtrace __P((char *fmt, ...));
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void logdebug __P((char *fmt, ...));
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void logperror __P((char *str));
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void prusage __P((void));
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int join __P((int sock, struct sockaddr_in *sin));
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void finish(), catcher(), timer(), initifs();
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char *pr_name();
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static void prusage()
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void
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prusage()
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{
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(void) fprintf(stderr, usage);
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exit(1);
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@ -177,22 +201,15 @@ do_fork()
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if (trace)
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return;
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if (pid =fork())
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if ((pid = fork()))
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exit(0);
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for (t = 0; t < 20; t++)
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if (t != s)
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(void) close(t);
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#ifndef SYSV
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t = open("/dev/tty", 2);
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if (t >= 0) {
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(void) ioctl(t, TIOCNOTTY, (char *)0);
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(void) close(t);
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}
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#else
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(void) setpgrp ();
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#endif
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(void) setsid ();
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initlog();
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}
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@ -201,24 +218,23 @@ do_fork()
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*/
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char *sendaddress, *recvaddress;
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int
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main(argc, argv)
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char *argv[];
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int argc;
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char *argv[];
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{
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#ifndef SYSV
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struct sigvec sv;
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#endif
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struct sigaction sa;
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struct sockaddr_in from;
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char **av = argv;
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struct sockaddr_in *to = &whereto;
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struct sockaddr_in joinaddr;
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int val;
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int c;
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min_adv_int =( max_adv_int * 3 / 4);
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lifetime = (3*max_adv_int);
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argc--, av++;
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while (argc > 0 && *av[0] == '-') {
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while (*++av[0]) switch (*av[0]) {
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while ((c = getopt(argc, argv, "dtvsrabfT:p:")) != EOF) {
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switch(c) {
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case 'd':
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debug = 1;
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break;
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@ -244,39 +260,28 @@ char *argv[];
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forever = 1;
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break;
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case 'T':
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argc--, av++;
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if (argc != 0) {
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val = strtol(av[0], (char **)NULL, 0);
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if (val < 4 || val > 1800) {
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(void) fprintf(stderr,
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"Bad Max Advertizement Interval\n");
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exit(1);
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}
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max_adv_int = val;
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min_adv_int =( max_adv_int * 3 / 4);
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lifetime = (3*max_adv_int);
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} else {
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prusage();
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/* NOTREACHED*/
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val = strtol(optarg, (char **)NULL, 0);
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if (val < 4 || val > 1800) {
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(void) fprintf(stderr,
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"Bad Max Advertizement Interval\n");
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exit(1);
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}
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goto next;
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max_adv_int = val;
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min_adv_int =( max_adv_int * 3 / 4);
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lifetime = (3*max_adv_int);
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break;
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case 'p':
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argc--, av++;
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if (argc != 0) {
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val = strtol(av[0], (char **)NULL, 0);
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preference = val;
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} else {
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prusage();
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/* NOTREACHED*/
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}
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goto next;
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val = strtol(optarg, (char **)NULL, 0);
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preference = val;
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break;
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default:
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prusage();
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/* NOTREACHED*/
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}
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next:
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argc--, av++;
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}
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argc -= optind;
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argv += optind;
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if( argc < 1) {
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if (support_multicast()) {
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if (responder)
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@ -286,8 +291,8 @@ char *argv[];
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} else
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sendaddress = "255.255.255.255";
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} else {
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sendaddress = av[0];
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argc--;
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sendaddress = argv[0];
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argc--; argv++;
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}
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if (argc < 1) {
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@ -299,8 +304,8 @@ char *argv[];
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} else
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recvaddress = "255.255.255.255";
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} else {
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recvaddress = av[0];
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argc--;
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recvaddress = argv[0];
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argc--; argv++;
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}
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if (argc != 0) {
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(void) fprintf(stderr, "Extra paramaters\n");
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@ -331,12 +336,8 @@ char *argv[];
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joinaddr.sin_addr.s_addr = inet_addr(recvaddress);
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if (responder) {
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#ifdef SYSV
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/* TBD fix this to be more random */
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srand((u_int)time((time_t *)NULL));
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#else
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srandom((int)gethostid());
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#endif
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srandom((int)gethostid()+(int)time((time_t *)NULL));
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}
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if ((s = socket(AF_INET, SOCK_RAW, IPPROTO_ICMP)) < 0) {
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@ -344,11 +345,7 @@ char *argv[];
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exit(5);
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}
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#ifdef SYSV
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setvbuf( stdout, NULL, _IOLBF, 0 );
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#else
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setlinebuf( stdout );
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#endif
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(void) signal( SIGINT, finish );
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(void) signal( SIGTERM, finish );
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@ -361,19 +358,16 @@ char *argv[];
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}
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#ifdef SYSV
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(void) sigset(SIGALRM, timer);
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#else
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/*
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* Make sure that this signal actually interrupts (rather than
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* restarts) the recvfrom call below.
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*/
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sv.sv_handler = timer;
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sv.sv_mask = 0;
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sv.sv_flags = SV_INTERRUPT;
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(void) sigvec(SIGALRM, &sv, (struct sigvec *)NULL);
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#endif
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timer(); /* start things going */
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memset(&sa, 0, sizeof(sa));
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sa.sa_handler = timer;
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sigemptyset(&sa.sa_mask);
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sa.sa_flags = 0; /* note: no SA_RESTART */
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(void) sigaction(SIGALRM, &sa, (struct sigaction *)NULL);
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timer(0); /* start things going */
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for (;;) {
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int len = sizeof (packet);
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@ -395,24 +389,21 @@ char *argv[];
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#define TIMER_INTERVAL 3
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#define GETIFCONF_TIMER 30
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static left_until_advertise;
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int left_until_advertise;
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/* Called every TIMER_INTERVAL */
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void timer()
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void timer(sig)
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int sig;
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{
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static time;
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static left_until_getifconf;
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static left_until_solicit;
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time += TIMER_INTERVAL;
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static int left_until_getifconf;
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static int left_until_solicit;
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left_until_getifconf -= TIMER_INTERVAL;
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left_until_advertise -= TIMER_INTERVAL;
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left_until_solicit -= TIMER_INTERVAL;
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if (left_until_getifconf < 0) {
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initifs();
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initifs(0);
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left_until_getifconf = GETIFCONF_TIMER;
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}
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if (responder && left_until_advertise <= 0) {
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@ -841,7 +832,7 @@ struct sockaddr_in *from;
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advertise(&sin);
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break;
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}
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}
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} /* end switch */
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}
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@ -851,6 +842,7 @@ struct sockaddr_in *from;
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* Checksum routine for Internet Protocol family headers (C Version)
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*
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*/
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int
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in_cksum(addr, len)
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u_short *addr;
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int len;
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@ -897,7 +889,8 @@ int len;
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* the statistics output from becomming intermingled.
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*/
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void
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finish()
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finish(sig)
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int sig;
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{
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if (responder) {
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int i;
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@ -957,12 +950,14 @@ unsigned char *data;
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}
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#endif notdef
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int
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isbroadcast(sin)
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struct sockaddr_in *sin;
|
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{
|
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return (sin->sin_addr.s_addr == INADDR_BROADCAST);
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}
|
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|
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int
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ismulticast(sin)
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struct sockaddr_in *sin;
|
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{
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@ -1082,13 +1077,14 @@ init()
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{
|
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int i;
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|
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initifs();
|
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initifs(0);
|
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for (i = 0; i < interfaces_size; i++)
|
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interfaces[i].preference = preference;
|
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}
|
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|
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void
|
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initifs()
|
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initifs(sig)
|
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int sig;
|
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{
|
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int sock;
|
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struct ifconf ifc;
|
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@ -1147,6 +1143,7 @@ initifs()
|
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ifreq = *ifrp;
|
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if (ioctl(sock, SIOCGIFFLAGS, (char *)&ifreq) < 0) {
|
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logperror("initifs: ioctl (get interface flags)");
|
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n = 0;
|
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continue;
|
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}
|
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n = ifrp->ifr_addr.sa_len + sizeof(ifrp->ifr_name);
|
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@ -1212,7 +1209,7 @@ initifs()
|
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(void) free(buf);
|
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}
|
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|
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static int
|
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int
|
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join(sock, sin)
|
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int sock;
|
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struct sockaddr_in *sin;
|
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@ -1444,11 +1441,7 @@ add_route(addr)
|
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{
|
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if (debug)
|
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logdebug("Add default route to %s\n", pr_name(addr));
|
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#if 1
|
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rtioctl(addr, RTM_ADD);
|
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#else
|
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rtioctl(addr, SIOCADDRT);
|
||||
#endif
|
||||
}
|
||||
|
||||
void
|
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@ -1457,11 +1450,7 @@ del_route(addr)
|
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{
|
||||
if (debug)
|
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logdebug("Delete default route to %s\n", pr_name(addr));
|
||||
#if 1
|
||||
rtioctl(addr, RTM_DELETE);
|
||||
#else
|
||||
rtioctl(addr, SIOCDELRT);
|
||||
#endif
|
||||
}
|
||||
|
||||
void
|
||||
@ -1470,7 +1459,6 @@ rtioctl(addr, op)
|
||||
int op;
|
||||
{
|
||||
int sock;
|
||||
#if 1
|
||||
struct {
|
||||
struct rt_msghdr m_rtm;
|
||||
struct sockaddr_in m_dst;
|
||||
@ -1480,23 +1468,30 @@ rtioctl(addr, op)
|
||||
static int seq = 0;
|
||||
|
||||
bzero(&m_rtmsg, sizeof(m_rtmsg));
|
||||
#define rtm m_rtmsg.m_rtm
|
||||
rtm.rtm_type = op;
|
||||
rtm.rtm_flags = RTF_GATEWAY | RTF_UP; /* XXX more? */
|
||||
rtm.rtm_version = RTM_VERSION;
|
||||
rtm.rtm_seq = ++seq;
|
||||
rtm.rtm_addrs = RTA_DST | RTA_GATEWAY | RTA_NETMASK;
|
||||
bzero(&rtm.rtm_rmx, sizeof(rtm.rtm_rmx)); /* XXX ??? */
|
||||
rtm.rtm_inits = 0;
|
||||
rtm.rtm_msglen = sizeof(m_rtmsg);
|
||||
|
||||
m_rtmsg.m_dst.sin_len = m_rtmsg.m_gateway.sin_len =
|
||||
sizeof(struct sockaddr_in);
|
||||
m_rtmsg.m_netmask.sin_len = 0;
|
||||
m_rtmsg.m_dst.sin_family = m_rtmsg.m_gateway.sin_family =
|
||||
m_rtmsg.m_netmask.sin_family = AF_INET;
|
||||
m_rtmsg.m_rtm.rtm_type = op;
|
||||
m_rtmsg.m_rtm.rtm_flags = RTF_GATEWAY | RTF_UP; /* XXX more? */
|
||||
m_rtmsg.m_rtm.rtm_version = RTM_VERSION;
|
||||
m_rtmsg.m_rtm.rtm_seq = ++seq;
|
||||
m_rtmsg.m_rtm.rtm_addrs = RTA_DST | RTA_GATEWAY | RTA_NETMASK;
|
||||
|
||||
/* initialise route metrics to zero.. tcp may fill these in */
|
||||
bzero(&m_rtmsg.m_rtm.rtm_rmx, sizeof(m_rtmsg.m_rtm.rtm_rmx));
|
||||
|
||||
m_rtmsg.m_rtm.rtm_inits = 0;
|
||||
m_rtmsg.m_rtm.rtm_msglen = sizeof(m_rtmsg);
|
||||
|
||||
m_rtmsg.m_dst.sin_len = sizeof(struct sockaddr_in);
|
||||
m_rtmsg.m_dst.sin_family = AF_INET;
|
||||
m_rtmsg.m_dst.sin_addr.s_addr = 0; /* default */
|
||||
|
||||
/* XXX: is setting a zero length right? */
|
||||
m_rtmsg.m_netmask.sin_len = 0;
|
||||
m_rtmsg.m_netmask.sin_family = AF_INET;
|
||||
m_rtmsg.m_netmask.sin_addr.s_addr = 0; /* default */
|
||||
|
||||
m_rtmsg.m_gateway.sin_len = sizeof(struct sockaddr_in);
|
||||
m_rtmsg.m_gateway.sin_family = AF_INET;
|
||||
m_rtmsg.m_gateway.sin_addr = addr; /* gateway */
|
||||
|
||||
sock = socket(PF_ROUTE, SOCK_RAW, 0);
|
||||
@ -1505,32 +1500,10 @@ rtioctl(addr, op)
|
||||
return;
|
||||
}
|
||||
if (write(sock, &m_rtmsg, sizeof(m_rtmsg)) != sizeof(m_rtmsg)) {
|
||||
logperror("rtioctl: write");
|
||||
return;
|
||||
if (!(op == RTM_ADD && errno == EEXIST))
|
||||
logperror("rtioctl: write");
|
||||
}
|
||||
close(sock);
|
||||
#else
|
||||
struct rtentry rt;
|
||||
|
||||
struct sockaddr_in *sin;
|
||||
bzero((char *)&rt, sizeof(struct rtentry));
|
||||
rt.rt_dst.sa_family = AF_INET;
|
||||
rt.rt_gateway.sa_family = AF_INET;
|
||||
sin = (struct sockaddr_in *)ALLIGN(&rt.rt_gateway);
|
||||
sin->sin_addr = addr;
|
||||
rt.rt_flags = RTF_UP | RTF_GATEWAY;
|
||||
|
||||
sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
|
||||
if (sock < 0) {
|
||||
logperror("rtioctl: socket");
|
||||
return;
|
||||
}
|
||||
if (ioctl(sock, op, (char *)&rt) < 0) {
|
||||
if (!(op == SIOCADDRT && errno == EEXIST))
|
||||
logperror("ioctl (add/delete route)");
|
||||
}
|
||||
(void) close(sock);
|
||||
#endif
|
||||
}
|
||||
|
||||
|
||||
@ -1540,73 +1513,99 @@ rtioctl(addr, op)
|
||||
*/
|
||||
|
||||
|
||||
static logging = 0;
|
||||
static int logging = 0;
|
||||
|
||||
void
|
||||
initlog()
|
||||
{
|
||||
logging++;
|
||||
openlog("in.rdiscd", LOG_PID | LOG_CONS, LOG_DAEMON);
|
||||
openlog("rdisc", LOG_PID | LOG_CONS, LOG_DAEMON);
|
||||
}
|
||||
|
||||
/* VARARGS1 */
|
||||
void
|
||||
logerr(fmt, a,b,c,d,e,f,g,h)
|
||||
#if __STDC__
|
||||
logerr(char *fmt, ...)
|
||||
#else
|
||||
logerr(fmt, va_alist)
|
||||
char *fmt;
|
||||
va_dcl
|
||||
#endif
|
||||
{
|
||||
if (logging)
|
||||
syslog(LOG_ERR, fmt, a,b,c,d,e,f,g,h);
|
||||
else
|
||||
(void) fprintf(stderr, fmt, a,b,c,d,e,f,g,h);
|
||||
}
|
||||
va_list ap;
|
||||
|
||||
/* VARARGS1 */
|
||||
void
|
||||
logtrace(fmt, a,b,c,d,e,f,g,h)
|
||||
char *fmt;
|
||||
{
|
||||
if (logging)
|
||||
syslog(LOG_INFO, fmt, a,b,c,d,e,f,g,h);
|
||||
else
|
||||
(void) fprintf(stdout, fmt, a,b,c,d,e,f,g,h);
|
||||
}
|
||||
|
||||
/* VARARGS1 */
|
||||
void
|
||||
logdebug(fmt, a,b,c,d,e,f,g,h)
|
||||
char *fmt;
|
||||
{
|
||||
if (logging)
|
||||
syslog(LOG_DEBUG, fmt, a,b,c,d,e,f,g,h);
|
||||
else
|
||||
(void) fprintf(stdout, fmt, a,b,c,d,e,f,g,h);
|
||||
}
|
||||
|
||||
#if 0
|
||||
extern char *sys_errlist[];
|
||||
#if __STDC__
|
||||
va_start(ap, fmt);
|
||||
#else
|
||||
va_start(ap);
|
||||
#endif
|
||||
|
||||
extern int errno;
|
||||
if (logging)
|
||||
vsyslog(LOG_ERR, fmt, ap);
|
||||
else
|
||||
(void) vfprintf(stderr, fmt, ap);
|
||||
|
||||
va_end(ap);
|
||||
}
|
||||
|
||||
/* VARARGS1 */
|
||||
void
|
||||
#if __STDC__
|
||||
logtrace(char *fmt, ...)
|
||||
#else
|
||||
logtrace(fmt, va_alist)
|
||||
char *fmt;
|
||||
va_dcl
|
||||
#endif
|
||||
{
|
||||
va_list ap;
|
||||
|
||||
#if __STDC__
|
||||
va_start(ap, fmt);
|
||||
#else
|
||||
va_start(ap);
|
||||
#endif
|
||||
|
||||
if (logging)
|
||||
vsyslog(LOG_INFO, fmt, ap);
|
||||
else
|
||||
(void) vfprintf(stdout, fmt, ap);
|
||||
|
||||
va_end(ap);
|
||||
}
|
||||
|
||||
/* VARARGS1 */
|
||||
void
|
||||
#if __STDC__
|
||||
logdebug(char *fmt, ...)
|
||||
#else
|
||||
logdebug(fmt, va_alist)
|
||||
char *fmt;
|
||||
va_dcl
|
||||
#endif
|
||||
{
|
||||
va_list ap;
|
||||
|
||||
#if __STDC__
|
||||
va_start(ap, fmt);
|
||||
#else
|
||||
va_start(ap);
|
||||
#endif
|
||||
|
||||
if (logging)
|
||||
vsyslog(LOG_DEBUG, fmt, ap);
|
||||
else
|
||||
(void) vfprintf(stdout, fmt, ap);
|
||||
|
||||
va_end(ap);
|
||||
}
|
||||
|
||||
void
|
||||
logperror(str)
|
||||
char *str;
|
||||
{
|
||||
if (logging)
|
||||
syslog(LOG_ERR, "%s: %s\n", str, sys_errlist[errno]);
|
||||
syslog(LOG_ERR, "%s: %m", str);
|
||||
else
|
||||
(void) fprintf(stderr, "%s: %s\n", str, sys_errlist[errno]);
|
||||
(void) warn("%s", str);
|
||||
}
|
||||
|
||||
|
||||
#ifdef SYSV
|
||||
void
|
||||
bzero(cp, len)
|
||||
char *cp;
|
||||
int len;
|
||||
{
|
||||
while (--len>=0)
|
||||
*cp++ = 0;
|
||||
}
|
||||
#endif
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user