26baedc5e4
a bum name to return as 0.0.0.0... we don't want ``delete xxx'' to delete the default route when xxx doesn't resolve. Support IP number specifications as the host when specifying a tcp-style device (rather than *just* hostnames).
154 lines
3.6 KiB
C
154 lines
3.6 KiB
C
/*-
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* Copyright (c) 1997 Brian Somers <brian@Awfulhak.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: defs.c,v 1.17 1998/06/27 14:18:05 brian Exp $
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*/
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#include <sys/types.h>
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#include <netdb.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <sys/socket.h>
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#include <ctype.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/errno.h>
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#if !defined(__FreeBSD__) || __FreeBSD__ < 3
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#include <time.h>
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#endif
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#include <unistd.h>
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#include "defs.h"
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void
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randinit()
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{
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#if __FreeBSD__ >= 3
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static int initdone; /* srandomdev() call is only required once */
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if (!initdone) {
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initdone = 1;
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srandomdev();
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}
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#else
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srandom((time(NULL)^getpid())+random());
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#endif
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}
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ssize_t
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fullread(int fd, void *v, size_t n)
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{
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size_t got, total;
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for (total = 0; total < n; total += got)
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switch ((got = read(fd, (char *)v + total, n - total))) {
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case 0:
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return total;
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case -1:
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if (errno == EINTR)
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got = 0;
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else
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return -1;
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}
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return total;
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}
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static struct {
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int mode;
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const char *name;
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} modes[] = {
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{ PHYS_INTERACTIVE, "interactive" },
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{ PHYS_AUTO, "auto" },
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{ PHYS_DIRECT, "direct" },
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{ PHYS_DEDICATED, "dedicated" },
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{ PHYS_DDIAL, "ddial" },
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{ PHYS_BACKGROUND, "background" },
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{ PHYS_ALL, "*" },
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{ 0, 0 }
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};
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const char *
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mode2Nam(int mode)
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{
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int m;
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for (m = 0; modes[m].mode; m++)
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if (modes[m].mode == mode)
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return modes[m].name;
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return "unknown";
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}
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int
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Nam2mode(const char *name)
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{
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int m, got, len;
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len = strlen(name);
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got = -1;
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for (m = 0; modes[m].mode; m++)
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if (!strncasecmp(name, modes[m].name, len)) {
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if (modes[m].name[len] == '\0')
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return modes[m].mode;
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if (got != -1)
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return 0;
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got = m;
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}
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return got == -1 ? 0 : modes[got].mode;
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}
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struct in_addr
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GetIpAddr(const char *cp)
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{
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struct in_addr ipaddr;
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if (!strcasecmp(cp, "default"))
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ipaddr.s_addr = INADDR_ANY;
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else if (inet_aton(cp, &ipaddr) == 0) {
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const char *ptr;
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/* Any illegal characters ? */
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for (ptr = cp; *ptr != '\0'; ptr++)
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if (!isalnum(*ptr) && strchr("-.", *ptr) == NULL)
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break;
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if (*ptr == '\0') {
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struct hostent *hp;
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hp = gethostbyname(cp);
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if (hp && hp->h_addrtype == AF_INET)
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memcpy(&ipaddr, hp->h_addr, hp->h_length);
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else
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ipaddr.s_addr = INADDR_NONE;
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} else
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ipaddr.s_addr = INADDR_NONE;
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}
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return ipaddr;
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}
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