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[servconf.c canohost.c misc.c channels.c sshconnect.c misc.h ssh-keyscan.c sshd.c] Add a small helper function to consistently handle the EAI_SYSTEM error code of getaddrinfo. Prompted by vgiffin at apple com via bz #1417. ok markus@ stevesk@
835 lines
17 KiB
C
835 lines
17 KiB
C
/* $OpenBSD: misc.c,v 1.66 2007/12/27 14:22:08 dtucker Exp $ */
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/*
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* Copyright (c) 2000 Markus Friedl. All rights reserved.
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* Copyright (c) 2005,2006 Damien Miller. 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 ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "includes.h"
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#include <sys/types.h>
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#include <sys/ioctl.h>
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#include <sys/socket.h>
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#include <sys/param.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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#include <unistd.h>
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#include <netinet/in.h>
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#include <netinet/tcp.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <netdb.h>
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#ifdef HAVE_PATHS_H
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# include <paths.h>
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#include <pwd.h>
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#endif
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#ifdef SSH_TUN_OPENBSD
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#include <net/if.h>
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#endif
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#include "xmalloc.h"
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#include "misc.h"
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#include "log.h"
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#include "ssh.h"
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/* remove newline at end of string */
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char *
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chop(char *s)
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{
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char *t = s;
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while (*t) {
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if (*t == '\n' || *t == '\r') {
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*t = '\0';
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return s;
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}
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t++;
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}
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return s;
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}
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/* set/unset filedescriptor to non-blocking */
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int
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set_nonblock(int fd)
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{
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int val;
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val = fcntl(fd, F_GETFL, 0);
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if (val < 0) {
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error("fcntl(%d, F_GETFL, 0): %s", fd, strerror(errno));
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return (-1);
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}
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if (val & O_NONBLOCK) {
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debug3("fd %d is O_NONBLOCK", fd);
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return (0);
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}
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debug2("fd %d setting O_NONBLOCK", fd);
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val |= O_NONBLOCK;
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if (fcntl(fd, F_SETFL, val) == -1) {
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debug("fcntl(%d, F_SETFL, O_NONBLOCK): %s", fd,
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strerror(errno));
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return (-1);
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}
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return (0);
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}
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int
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unset_nonblock(int fd)
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{
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int val;
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val = fcntl(fd, F_GETFL, 0);
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if (val < 0) {
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error("fcntl(%d, F_GETFL, 0): %s", fd, strerror(errno));
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return (-1);
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}
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if (!(val & O_NONBLOCK)) {
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debug3("fd %d is not O_NONBLOCK", fd);
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return (0);
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}
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debug("fd %d clearing O_NONBLOCK", fd);
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val &= ~O_NONBLOCK;
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if (fcntl(fd, F_SETFL, val) == -1) {
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debug("fcntl(%d, F_SETFL, ~O_NONBLOCK): %s",
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fd, strerror(errno));
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return (-1);
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}
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return (0);
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}
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const char *
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ssh_gai_strerror(int gaierr)
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{
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if (gaierr == EAI_SYSTEM)
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return strerror(errno);
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return gai_strerror(gaierr);
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}
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/* disable nagle on socket */
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void
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set_nodelay(int fd)
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{
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int opt;
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socklen_t optlen;
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optlen = sizeof opt;
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if (getsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &opt, &optlen) == -1) {
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debug("getsockopt TCP_NODELAY: %.100s", strerror(errno));
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return;
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}
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if (opt == 1) {
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debug2("fd %d is TCP_NODELAY", fd);
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return;
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}
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opt = 1;
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debug2("fd %d setting TCP_NODELAY", fd);
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if (setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &opt, sizeof opt) == -1)
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error("setsockopt TCP_NODELAY: %.100s", strerror(errno));
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}
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/* Characters considered whitespace in strsep calls. */
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#define WHITESPACE " \t\r\n"
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#define QUOTE "\""
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/* return next token in configuration line */
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char *
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strdelim(char **s)
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{
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char *old;
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int wspace = 0;
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if (*s == NULL)
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return NULL;
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old = *s;
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*s = strpbrk(*s, WHITESPACE QUOTE "=");
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if (*s == NULL)
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return (old);
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if (*s[0] == '\"') {
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memmove(*s, *s + 1, strlen(*s)); /* move nul too */
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/* Find matching quote */
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if ((*s = strpbrk(*s, QUOTE)) == NULL) {
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return (NULL); /* no matching quote */
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} else {
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*s[0] = '\0';
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return (old);
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}
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}
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/* Allow only one '=' to be skipped */
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if (*s[0] == '=')
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wspace = 1;
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*s[0] = '\0';
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/* Skip any extra whitespace after first token */
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*s += strspn(*s + 1, WHITESPACE) + 1;
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if (*s[0] == '=' && !wspace)
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*s += strspn(*s + 1, WHITESPACE) + 1;
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return (old);
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}
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struct passwd *
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pwcopy(struct passwd *pw)
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{
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struct passwd *copy = xcalloc(1, sizeof(*copy));
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copy->pw_name = xstrdup(pw->pw_name);
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copy->pw_passwd = xstrdup(pw->pw_passwd);
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copy->pw_gecos = xstrdup(pw->pw_gecos);
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copy->pw_uid = pw->pw_uid;
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copy->pw_gid = pw->pw_gid;
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#ifdef HAVE_PW_EXPIRE_IN_PASSWD
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copy->pw_expire = pw->pw_expire;
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#endif
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#ifdef HAVE_PW_CHANGE_IN_PASSWD
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copy->pw_change = pw->pw_change;
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#endif
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#ifdef HAVE_PW_CLASS_IN_PASSWD
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copy->pw_class = xstrdup(pw->pw_class);
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#endif
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copy->pw_dir = xstrdup(pw->pw_dir);
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copy->pw_shell = xstrdup(pw->pw_shell);
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return copy;
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}
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/*
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* Convert ASCII string to TCP/IP port number.
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* Port must be >0 and <=65535.
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* Return 0 if invalid.
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*/
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int
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a2port(const char *s)
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{
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long port;
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char *endp;
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errno = 0;
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port = strtol(s, &endp, 0);
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if (s == endp || *endp != '\0' ||
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(errno == ERANGE && (port == LONG_MIN || port == LONG_MAX)) ||
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port <= 0 || port > 65535)
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return 0;
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return port;
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}
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int
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a2tun(const char *s, int *remote)
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{
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const char *errstr = NULL;
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char *sp, *ep;
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int tun;
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if (remote != NULL) {
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*remote = SSH_TUNID_ANY;
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sp = xstrdup(s);
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if ((ep = strchr(sp, ':')) == NULL) {
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xfree(sp);
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return (a2tun(s, NULL));
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}
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ep[0] = '\0'; ep++;
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*remote = a2tun(ep, NULL);
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tun = a2tun(sp, NULL);
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xfree(sp);
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return (*remote == SSH_TUNID_ERR ? *remote : tun);
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}
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if (strcasecmp(s, "any") == 0)
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return (SSH_TUNID_ANY);
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tun = strtonum(s, 0, SSH_TUNID_MAX, &errstr);
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if (errstr != NULL)
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return (SSH_TUNID_ERR);
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return (tun);
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}
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#define SECONDS 1
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#define MINUTES (SECONDS * 60)
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#define HOURS (MINUTES * 60)
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#define DAYS (HOURS * 24)
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#define WEEKS (DAYS * 7)
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/*
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* Convert a time string into seconds; format is
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* a sequence of:
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* time[qualifier]
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*
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* Valid time qualifiers are:
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* <none> seconds
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* s|S seconds
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* m|M minutes
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* h|H hours
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* d|D days
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* w|W weeks
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*
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* Examples:
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* 90m 90 minutes
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* 1h30m 90 minutes
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* 2d 2 days
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* 1w 1 week
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*
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* Return -1 if time string is invalid.
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*/
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long
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convtime(const char *s)
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{
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long total, secs;
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const char *p;
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char *endp;
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errno = 0;
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total = 0;
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p = s;
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if (p == NULL || *p == '\0')
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return -1;
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while (*p) {
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secs = strtol(p, &endp, 10);
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if (p == endp ||
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(errno == ERANGE && (secs == LONG_MIN || secs == LONG_MAX)) ||
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secs < 0)
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return -1;
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switch (*endp++) {
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case '\0':
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endp--;
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break;
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case 's':
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case 'S':
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break;
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case 'm':
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case 'M':
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secs *= MINUTES;
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break;
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case 'h':
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case 'H':
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secs *= HOURS;
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break;
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case 'd':
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case 'D':
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secs *= DAYS;
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break;
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case 'w':
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case 'W':
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secs *= WEEKS;
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break;
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default:
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return -1;
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}
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total += secs;
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if (total < 0)
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return -1;
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p = endp;
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}
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return total;
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}
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/*
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* Returns a standardized host+port identifier string.
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* Caller must free returned string.
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*/
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char *
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put_host_port(const char *host, u_short port)
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{
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char *hoststr;
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if (port == 0 || port == SSH_DEFAULT_PORT)
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return(xstrdup(host));
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if (asprintf(&hoststr, "[%s]:%d", host, (int)port) < 0)
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fatal("put_host_port: asprintf: %s", strerror(errno));
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debug3("put_host_port: %s", hoststr);
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return hoststr;
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}
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/*
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* Search for next delimiter between hostnames/addresses and ports.
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* Argument may be modified (for termination).
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* Returns *cp if parsing succeeds.
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* *cp is set to the start of the next delimiter, if one was found.
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* If this is the last field, *cp is set to NULL.
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*/
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char *
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hpdelim(char **cp)
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{
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char *s, *old;
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if (cp == NULL || *cp == NULL)
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return NULL;
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old = s = *cp;
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if (*s == '[') {
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if ((s = strchr(s, ']')) == NULL)
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return NULL;
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else
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s++;
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} else if ((s = strpbrk(s, ":/")) == NULL)
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s = *cp + strlen(*cp); /* skip to end (see first case below) */
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switch (*s) {
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case '\0':
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*cp = NULL; /* no more fields*/
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break;
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case ':':
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case '/':
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*s = '\0'; /* terminate */
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*cp = s + 1;
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break;
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default:
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return NULL;
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}
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return old;
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}
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char *
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cleanhostname(char *host)
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{
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if (*host == '[' && host[strlen(host) - 1] == ']') {
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host[strlen(host) - 1] = '\0';
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return (host + 1);
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} else
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return host;
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}
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char *
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colon(char *cp)
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{
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int flag = 0;
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if (*cp == ':') /* Leading colon is part of file name. */
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return (0);
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if (*cp == '[')
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flag = 1;
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for (; *cp; ++cp) {
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if (*cp == '@' && *(cp+1) == '[')
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flag = 1;
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if (*cp == ']' && *(cp+1) == ':' && flag)
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return (cp+1);
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if (*cp == ':' && !flag)
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return (cp);
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if (*cp == '/')
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return (0);
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}
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return (0);
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}
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/* function to assist building execv() arguments */
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void
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addargs(arglist *args, char *fmt, ...)
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{
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va_list ap;
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char *cp;
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u_int nalloc;
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int r;
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va_start(ap, fmt);
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r = vasprintf(&cp, fmt, ap);
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va_end(ap);
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if (r == -1)
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fatal("addargs: argument too long");
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nalloc = args->nalloc;
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if (args->list == NULL) {
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nalloc = 32;
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args->num = 0;
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} else if (args->num+2 >= nalloc)
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nalloc *= 2;
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args->list = xrealloc(args->list, nalloc, sizeof(char *));
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args->nalloc = nalloc;
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args->list[args->num++] = cp;
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args->list[args->num] = NULL;
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}
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void
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replacearg(arglist *args, u_int which, char *fmt, ...)
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{
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va_list ap;
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char *cp;
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int r;
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va_start(ap, fmt);
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r = vasprintf(&cp, fmt, ap);
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va_end(ap);
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if (r == -1)
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fatal("replacearg: argument too long");
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|
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if (which >= args->num)
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fatal("replacearg: tried to replace invalid arg %d >= %d",
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which, args->num);
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xfree(args->list[which]);
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args->list[which] = cp;
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}
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void
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freeargs(arglist *args)
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{
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u_int i;
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|
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if (args->list != NULL) {
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for (i = 0; i < args->num; i++)
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xfree(args->list[i]);
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xfree(args->list);
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args->nalloc = args->num = 0;
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args->list = NULL;
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}
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}
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|
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/*
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* Expands tildes in the file name. Returns data allocated by xmalloc.
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|
* Warning: this calls getpw*.
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*/
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char *
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tilde_expand_filename(const char *filename, uid_t uid)
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|
{
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const char *path;
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char user[128], ret[MAXPATHLEN];
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struct passwd *pw;
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u_int len, slash;
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|
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if (*filename != '~')
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return (xstrdup(filename));
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filename++;
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path = strchr(filename, '/');
|
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if (path != NULL && path > filename) { /* ~user/path */
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slash = path - filename;
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if (slash > sizeof(user) - 1)
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fatal("tilde_expand_filename: ~username too long");
|
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memcpy(user, filename, slash);
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user[slash] = '\0';
|
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if ((pw = getpwnam(user)) == NULL)
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fatal("tilde_expand_filename: No such user %s", user);
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} else if ((pw = getpwuid(uid)) == NULL) /* ~/path */
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fatal("tilde_expand_filename: No such uid %d", uid);
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if (strlcpy(ret, pw->pw_dir, sizeof(ret)) >= sizeof(ret))
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fatal("tilde_expand_filename: Path too long");
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|
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/* Make sure directory has a trailing '/' */
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len = strlen(pw->pw_dir);
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if ((len == 0 || pw->pw_dir[len - 1] != '/') &&
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strlcat(ret, "/", sizeof(ret)) >= sizeof(ret))
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fatal("tilde_expand_filename: Path too long");
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|
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/* Skip leading '/' from specified path */
|
|
if (path != NULL)
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filename = path + 1;
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if (strlcat(ret, filename, sizeof(ret)) >= sizeof(ret))
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fatal("tilde_expand_filename: Path too long");
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return (xstrdup(ret));
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}
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/*
|
|
* Expand a string with a set of %[char] escapes. A number of escapes may be
|
|
* specified as (char *escape_chars, char *replacement) pairs. The list must
|
|
* be terminated by a NULL escape_char. Returns replaced string in memory
|
|
* allocated by xmalloc.
|
|
*/
|
|
char *
|
|
percent_expand(const char *string, ...)
|
|
{
|
|
#define EXPAND_MAX_KEYS 16
|
|
struct {
|
|
const char *key;
|
|
const char *repl;
|
|
} keys[EXPAND_MAX_KEYS];
|
|
u_int num_keys, i, j;
|
|
char buf[4096];
|
|
va_list ap;
|
|
|
|
/* Gather keys */
|
|
va_start(ap, string);
|
|
for (num_keys = 0; num_keys < EXPAND_MAX_KEYS; num_keys++) {
|
|
keys[num_keys].key = va_arg(ap, char *);
|
|
if (keys[num_keys].key == NULL)
|
|
break;
|
|
keys[num_keys].repl = va_arg(ap, char *);
|
|
if (keys[num_keys].repl == NULL)
|
|
fatal("percent_expand: NULL replacement");
|
|
}
|
|
va_end(ap);
|
|
|
|
if (num_keys >= EXPAND_MAX_KEYS)
|
|
fatal("percent_expand: too many keys");
|
|
|
|
/* Expand string */
|
|
*buf = '\0';
|
|
for (i = 0; *string != '\0'; string++) {
|
|
if (*string != '%') {
|
|
append:
|
|
buf[i++] = *string;
|
|
if (i >= sizeof(buf))
|
|
fatal("percent_expand: string too long");
|
|
buf[i] = '\0';
|
|
continue;
|
|
}
|
|
string++;
|
|
if (*string == '%')
|
|
goto append;
|
|
for (j = 0; j < num_keys; j++) {
|
|
if (strchr(keys[j].key, *string) != NULL) {
|
|
i = strlcat(buf, keys[j].repl, sizeof(buf));
|
|
if (i >= sizeof(buf))
|
|
fatal("percent_expand: string too long");
|
|
break;
|
|
}
|
|
}
|
|
if (j >= num_keys)
|
|
fatal("percent_expand: unknown key %%%c", *string);
|
|
}
|
|
return (xstrdup(buf));
|
|
#undef EXPAND_MAX_KEYS
|
|
}
|
|
|
|
/*
|
|
* Read an entire line from a public key file into a static buffer, discarding
|
|
* lines that exceed the buffer size. Returns 0 on success, -1 on failure.
|
|
*/
|
|
int
|
|
read_keyfile_line(FILE *f, const char *filename, char *buf, size_t bufsz,
|
|
u_long *lineno)
|
|
{
|
|
while (fgets(buf, bufsz, f) != NULL) {
|
|
if (buf[0] == '\0')
|
|
continue;
|
|
(*lineno)++;
|
|
if (buf[strlen(buf) - 1] == '\n' || feof(f)) {
|
|
return 0;
|
|
} else {
|
|
debug("%s: %s line %lu exceeds size limit", __func__,
|
|
filename, *lineno);
|
|
/* discard remainder of line */
|
|
while (fgetc(f) != '\n' && !feof(f))
|
|
; /* nothing */
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
int
|
|
tun_open(int tun, int mode)
|
|
{
|
|
#if defined(CUSTOM_SYS_TUN_OPEN)
|
|
return (sys_tun_open(tun, mode));
|
|
#elif defined(SSH_TUN_OPENBSD)
|
|
struct ifreq ifr;
|
|
char name[100];
|
|
int fd = -1, sock;
|
|
|
|
/* Open the tunnel device */
|
|
if (tun <= SSH_TUNID_MAX) {
|
|
snprintf(name, sizeof(name), "/dev/tun%d", tun);
|
|
fd = open(name, O_RDWR);
|
|
} else if (tun == SSH_TUNID_ANY) {
|
|
for (tun = 100; tun >= 0; tun--) {
|
|
snprintf(name, sizeof(name), "/dev/tun%d", tun);
|
|
if ((fd = open(name, O_RDWR)) >= 0)
|
|
break;
|
|
}
|
|
} else {
|
|
debug("%s: invalid tunnel %u", __func__, tun);
|
|
return (-1);
|
|
}
|
|
|
|
if (fd < 0) {
|
|
debug("%s: %s open failed: %s", __func__, name, strerror(errno));
|
|
return (-1);
|
|
}
|
|
|
|
debug("%s: %s mode %d fd %d", __func__, name, mode, fd);
|
|
|
|
/* Set the tunnel device operation mode */
|
|
snprintf(ifr.ifr_name, sizeof(ifr.ifr_name), "tun%d", tun);
|
|
if ((sock = socket(PF_UNIX, SOCK_STREAM, 0)) == -1)
|
|
goto failed;
|
|
|
|
if (ioctl(sock, SIOCGIFFLAGS, &ifr) == -1)
|
|
goto failed;
|
|
|
|
/* Set interface mode */
|
|
ifr.ifr_flags &= ~IFF_UP;
|
|
if (mode == SSH_TUNMODE_ETHERNET)
|
|
ifr.ifr_flags |= IFF_LINK0;
|
|
else
|
|
ifr.ifr_flags &= ~IFF_LINK0;
|
|
if (ioctl(sock, SIOCSIFFLAGS, &ifr) == -1)
|
|
goto failed;
|
|
|
|
/* Bring interface up */
|
|
ifr.ifr_flags |= IFF_UP;
|
|
if (ioctl(sock, SIOCSIFFLAGS, &ifr) == -1)
|
|
goto failed;
|
|
|
|
close(sock);
|
|
return (fd);
|
|
|
|
failed:
|
|
if (fd >= 0)
|
|
close(fd);
|
|
if (sock >= 0)
|
|
close(sock);
|
|
debug("%s: failed to set %s mode %d: %s", __func__, name,
|
|
mode, strerror(errno));
|
|
return (-1);
|
|
#else
|
|
error("Tunnel interfaces are not supported on this platform");
|
|
return (-1);
|
|
#endif
|
|
}
|
|
|
|
void
|
|
sanitise_stdfd(void)
|
|
{
|
|
int nullfd, dupfd;
|
|
|
|
if ((nullfd = dupfd = open(_PATH_DEVNULL, O_RDWR)) == -1) {
|
|
fprintf(stderr, "Couldn't open /dev/null: %s", strerror(errno));
|
|
exit(1);
|
|
}
|
|
while (++dupfd <= 2) {
|
|
/* Only clobber closed fds */
|
|
if (fcntl(dupfd, F_GETFL, 0) >= 0)
|
|
continue;
|
|
if (dup2(nullfd, dupfd) == -1) {
|
|
fprintf(stderr, "dup2: %s", strerror(errno));
|
|
exit(1);
|
|
}
|
|
}
|
|
if (nullfd > 2)
|
|
close(nullfd);
|
|
}
|
|
|
|
char *
|
|
tohex(const void *vp, size_t l)
|
|
{
|
|
const u_char *p = (const u_char *)vp;
|
|
char b[3], *r;
|
|
size_t i, hl;
|
|
|
|
if (l > 65536)
|
|
return xstrdup("tohex: length > 65536");
|
|
|
|
hl = l * 2 + 1;
|
|
r = xcalloc(1, hl);
|
|
for (i = 0; i < l; i++) {
|
|
snprintf(b, sizeof(b), "%02x", p[i]);
|
|
strlcat(r, b, hl);
|
|
}
|
|
return (r);
|
|
}
|
|
|
|
u_int64_t
|
|
get_u64(const void *vp)
|
|
{
|
|
const u_char *p = (const u_char *)vp;
|
|
u_int64_t v;
|
|
|
|
v = (u_int64_t)p[0] << 56;
|
|
v |= (u_int64_t)p[1] << 48;
|
|
v |= (u_int64_t)p[2] << 40;
|
|
v |= (u_int64_t)p[3] << 32;
|
|
v |= (u_int64_t)p[4] << 24;
|
|
v |= (u_int64_t)p[5] << 16;
|
|
v |= (u_int64_t)p[6] << 8;
|
|
v |= (u_int64_t)p[7];
|
|
|
|
return (v);
|
|
}
|
|
|
|
u_int32_t
|
|
get_u32(const void *vp)
|
|
{
|
|
const u_char *p = (const u_char *)vp;
|
|
u_int32_t v;
|
|
|
|
v = (u_int32_t)p[0] << 24;
|
|
v |= (u_int32_t)p[1] << 16;
|
|
v |= (u_int32_t)p[2] << 8;
|
|
v |= (u_int32_t)p[3];
|
|
|
|
return (v);
|
|
}
|
|
|
|
u_int16_t
|
|
get_u16(const void *vp)
|
|
{
|
|
const u_char *p = (const u_char *)vp;
|
|
u_int16_t v;
|
|
|
|
v = (u_int16_t)p[0] << 8;
|
|
v |= (u_int16_t)p[1];
|
|
|
|
return (v);
|
|
}
|
|
|
|
void
|
|
put_u64(void *vp, u_int64_t v)
|
|
{
|
|
u_char *p = (u_char *)vp;
|
|
|
|
p[0] = (u_char)(v >> 56) & 0xff;
|
|
p[1] = (u_char)(v >> 48) & 0xff;
|
|
p[2] = (u_char)(v >> 40) & 0xff;
|
|
p[3] = (u_char)(v >> 32) & 0xff;
|
|
p[4] = (u_char)(v >> 24) & 0xff;
|
|
p[5] = (u_char)(v >> 16) & 0xff;
|
|
p[6] = (u_char)(v >> 8) & 0xff;
|
|
p[7] = (u_char)v & 0xff;
|
|
}
|
|
|
|
void
|
|
put_u32(void *vp, u_int32_t v)
|
|
{
|
|
u_char *p = (u_char *)vp;
|
|
|
|
p[0] = (u_char)(v >> 24) & 0xff;
|
|
p[1] = (u_char)(v >> 16) & 0xff;
|
|
p[2] = (u_char)(v >> 8) & 0xff;
|
|
p[3] = (u_char)v & 0xff;
|
|
}
|
|
|
|
|
|
void
|
|
put_u16(void *vp, u_int16_t v)
|
|
{
|
|
u_char *p = (u_char *)vp;
|
|
|
|
p[0] = (u_char)(v >> 8) & 0xff;
|
|
p[1] = (u_char)v & 0xff;
|
|
}
|