mirror of
https://git.hardenedbsd.org/hardenedbsd/HardenedBSD.git
synced 2024-11-22 21:51:04 +01:00
442 lines
8.6 KiB
C
442 lines
8.6 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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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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#include <sys/param.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 <errno.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#if defined(__FreeBSD__) && !defined(NOKLDLOAD)
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#include <sys/module.h>
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#endif
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#include <termios.h>
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#ifndef __FreeBSD__
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#include <time.h>
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#endif
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#include <unistd.h>
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#if defined(__FreeBSD__) && !defined(NOKLDLOAD)
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#include "id.h"
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#include "log.h"
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#endif
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#include "defs.h"
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#define issep(c) ((c) == '\t' || (c) == ' ')
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#ifdef __NetBSD__
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void
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randinit()
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{
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srandom((time(NULL)^getpid())+random());
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}
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#endif
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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_FOREGROUND, "foreground" },
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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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static const struct speeds {
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unsigned nspeed;
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speed_t speed;
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} speeds[] = {
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#ifdef B50
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{ 50, B50, },
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#endif
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#ifdef B75
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{ 75, B75, },
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#endif
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#ifdef B110
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{ 110, B110, },
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#endif
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#ifdef B134
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{ 134, B134, },
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#endif
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#ifdef B150
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{ 150, B150, },
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#endif
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#ifdef B200
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{ 200, B200, },
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#endif
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#ifdef B300
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{ 300, B300, },
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#endif
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#ifdef B600
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{ 600, B600, },
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#endif
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#ifdef B1200
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{ 1200, B1200, },
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#endif
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#ifdef B1800
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{ 1800, B1800, },
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#endif
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#ifdef B2400
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{ 2400, B2400, },
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#endif
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#ifdef B4800
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{ 4800, B4800, },
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#endif
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#ifdef B9600
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{ 9600, B9600, },
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#endif
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#ifdef B19200
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{ 19200, B19200, },
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#endif
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#ifdef B38400
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{ 38400, B38400, },
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#endif
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#ifndef _POSIX_SOURCE
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#ifdef B7200
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{ 7200, B7200, },
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#endif
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#ifdef B14400
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{ 14400, B14400, },
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#endif
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#ifdef B28800
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{ 28800, B28800, },
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#endif
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#ifdef B57600
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{ 57600, B57600, },
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#endif
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#ifdef B76800
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{ 76800, B76800, },
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#endif
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#ifdef B115200
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{ 115200, B115200, },
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#endif
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#ifdef B230400
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{ 230400, B230400, },
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#endif
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#ifdef B460800
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{ 460800, B460800, },
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#endif
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#ifdef B921600
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{ 921600, B921600, },
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#endif
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#ifdef EXTA
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{ 19200, EXTA, },
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#endif
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#ifdef EXTB
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{ 38400, EXTB, },
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#endif
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#endif /* _POSIX_SOURCE */
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{ 0, 0 }
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};
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unsigned
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SpeedToUnsigned(speed_t speed)
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{
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const struct speeds *sp;
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for (sp = speeds; sp->nspeed; sp++) {
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if (sp->speed == speed) {
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return sp->nspeed;
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}
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}
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return 0;
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}
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speed_t
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UnsignedToSpeed(unsigned nspeed)
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{
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const struct speeds *sp;
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for (sp = speeds; sp->nspeed; sp++) {
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if (sp->nspeed == nspeed) {
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return sp->speed;
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}
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}
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return B0;
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}
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char *
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findblank(char *p, int flags)
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{
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int instring;
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instring = 0;
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while (*p) {
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if (*p == '\\') {
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if (flags & PARSE_REDUCE) {
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memmove(p, p + 1, strlen(p));
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if (!*p)
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break;
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} else
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p++;
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} else if (*p == '"') {
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memmove(p, p + 1, strlen(p));
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instring = !instring;
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continue;
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} else if (!instring && (issep(*p) ||
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(*p == '#' && !(flags & PARSE_NOHASH))))
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return p;
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p++;
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}
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return instring ? NULL : p;
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}
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int
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MakeArgs(char *script, char **pvect, int maxargs, int flags)
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{
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int nargs;
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nargs = 0;
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while (*script) {
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script += strspn(script, " \t");
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if (*script == '#' && !(flags & PARSE_NOHASH)) {
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*script = '\0';
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break;
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}
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if (*script) {
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if (nargs >= maxargs - 1)
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break;
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*pvect++ = script;
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nargs++;
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script = findblank(script, flags);
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if (script == NULL)
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return -1;
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else if (!(flags & PARSE_NOHASH) && *script == '#')
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*script = '\0';
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else if (*script)
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*script++ = '\0';
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}
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}
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*pvect = NULL;
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return nargs;
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}
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const char *
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NumStr(long val, char *buf, size_t sz)
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{
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static char result[23]; /* handles 64 bit numbers */
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if (buf == NULL || sz == 0) {
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buf = result;
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sz = sizeof result;
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}
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snprintf(buf, sz, "<%ld>", val);
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return buf;
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}
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const char *
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HexStr(long val, char *buf, size_t sz)
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{
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static char result[21]; /* handles 64 bit numbers */
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if (buf == NULL || sz == 0) {
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buf = result;
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sz = sizeof result;
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}
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snprintf(buf, sz, "<0x%lx>", val);
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return buf;
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}
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const char *
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ex_desc(int ex)
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{
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static char num[12]; /* Used immediately if returned */
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static const char * const desc[] = {
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"normal", "start", "sock", "modem", "dial", "dead", "done",
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"reboot", "errdead", "hangup", "term", "nodial", "nologin",
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"redial", "reconnect"
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};
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if (ex >= 0 && ex < (int)(sizeof desc / sizeof *desc))
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return desc[ex];
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snprintf(num, sizeof num, "%d", ex);
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return num;
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}
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void
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SetTitle(const char *title)
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{
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if (title == NULL)
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setproctitle(NULL);
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else if (title[0] == '-' && title[1] != '\0')
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setproctitle("-%s", title + 1);
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else
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setproctitle("%s", title);
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}
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fd_set *
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mkfdset(void)
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{
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return (fd_set *)malloc(howmany(getdtablesize(), NFDBITS) * sizeof (fd_mask));
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}
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void
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zerofdset(fd_set *s)
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{
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memset(s, '\0', howmany(getdtablesize(), NFDBITS) * sizeof (fd_mask));
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}
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void
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Concatinate(char *buf, size_t sz, int argc, const char *const *argv)
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{
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int i, n;
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unsigned pos;
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*buf = '\0';
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for (pos = i = 0; i < argc; i++) {
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n = snprintf(buf + pos, sz - pos, "%s%s", i ? " " : "", argv[i]);
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if (n < 0) {
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buf[pos] = '\0';
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break;
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}
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if ((pos += n) >= sz)
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break;
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}
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}
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#if defined(__FreeBSD__) && !defined(NOKLDLOAD)
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int
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loadmodules(int how, const char *module, ...)
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{
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int loaded = 0;
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va_list ap;
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va_start(ap, module);
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while (module != NULL) {
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if (modfind(module) == -1) {
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if (ID0kldload(module) == -1) {
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if (how == LOAD_VERBOSLY)
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log_Printf(LogWARN, "%s: Cannot load module\n", module);
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} else
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loaded++;
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}
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module = va_arg(ap, const char *);
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}
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va_end(ap);
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return loaded;
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}
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#else
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int
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loadmodules(int how __unused, const char *module __unused, ...)
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{
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return 0;
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}
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#endif
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