forked from mirrors/tftp-hpa-google
Initial revision
This commit is contained in:
hpa
commit
09f975fa4c
18 changed files with 4696 additions and 0 deletions
704
tftp/main.c
Normal file
704
tftp/main.c
Normal file
|
|
@ -0,0 +1,704 @@
|
|||
/* $OpenBSD: main.c,v 1.4 1997/01/17 07:13:30 millert Exp $ */
|
||||
/* $NetBSD: main.c,v 1.6 1995/05/21 16:54:10 mycroft Exp $ */
|
||||
|
||||
/*
|
||||
* Copyright (c) 1983, 1993
|
||||
* The Regents of the University of California. All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the University of
|
||||
* California, Berkeley and its contributors.
|
||||
* 4. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#ifndef lint
|
||||
static const char *copyright =
|
||||
"@(#) Copyright (c) 1983, 1993\n\
|
||||
The Regents of the University of California. All rights reserved.\n";
|
||||
/* static char sccsid[] = "@(#)main.c 8.1 (Berkeley) 6/6/93"; */
|
||||
/* static char rcsid[] = "$OpenBSD: main.c,v 1.4 1997/01/17 07:13:30 millert Exp $"; */
|
||||
static const char *rcsid = "tftp-hpa $Id$";
|
||||
#endif /* not lint */
|
||||
|
||||
/* Many bug fixes are from Jim Guyton <guyton@rand-unix> */
|
||||
|
||||
/*
|
||||
* TFTP User Program -- Command Interface.
|
||||
*/
|
||||
#include <sys/types.h>
|
||||
#include <sys/socket.h>
|
||||
#include <sys/file.h>
|
||||
|
||||
#include <netinet/in.h>
|
||||
|
||||
#include <arpa/inet.h>
|
||||
|
||||
#include <ctype.h>
|
||||
#include <errno.h>
|
||||
#include <netdb.h>
|
||||
#include <setjmp.h>
|
||||
#include <signal.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
#include <unistd.h>
|
||||
|
||||
#include "extern.h"
|
||||
|
||||
#define TIMEOUT 5 /* secs between rexmt's */
|
||||
#define LBUFLEN 200 /* size of input buffer */
|
||||
|
||||
struct sockaddr_in peeraddr;
|
||||
int f;
|
||||
short port;
|
||||
int trace;
|
||||
int verbose;
|
||||
int connected;
|
||||
char mode[32];
|
||||
char line[LBUFLEN];
|
||||
int margc;
|
||||
char *margv[20];
|
||||
char *prompt = "tftp";
|
||||
jmp_buf toplevel;
|
||||
void intr(int);
|
||||
struct servent *sp;
|
||||
|
||||
void get (int, char **);
|
||||
void help (int, char **);
|
||||
void modecmd (int, char **);
|
||||
void put (int, char **);
|
||||
void quit (int, char **);
|
||||
void setascii (int, char **);
|
||||
void setbinary (int, char **);
|
||||
void setpeer (int, char **);
|
||||
void setrexmt (int, char **);
|
||||
void settimeout (int, char **);
|
||||
void settrace (int, char **);
|
||||
void setverbose (int, char **);
|
||||
void status (int, char **);
|
||||
|
||||
static void command (void);
|
||||
|
||||
static void getusage (char *);
|
||||
static void makeargv (void);
|
||||
static void putusage (char *);
|
||||
static void settftpmode (char *);
|
||||
|
||||
#define HELPINDENT (sizeof("connect"))
|
||||
|
||||
struct cmd {
|
||||
char *name;
|
||||
char *help;
|
||||
void (*handler) (int, char **);
|
||||
};
|
||||
|
||||
char vhelp[] = "toggle verbose mode";
|
||||
char thelp[] = "toggle packet tracing";
|
||||
char chelp[] = "connect to remote tftp";
|
||||
char qhelp[] = "exit tftp";
|
||||
char hhelp[] = "print help information";
|
||||
char shelp[] = "send file";
|
||||
char rhelp[] = "receive file";
|
||||
char mhelp[] = "set file transfer mode";
|
||||
char sthelp[] = "show current status";
|
||||
char xhelp[] = "set per-packet retransmission timeout";
|
||||
char ihelp[] = "set total retransmission timeout";
|
||||
char ashelp[] = "set mode to netascii";
|
||||
char bnhelp[] = "set mode to octet";
|
||||
|
||||
struct cmd cmdtab[] = {
|
||||
{ "connect", chelp, setpeer },
|
||||
{ "mode", mhelp, modecmd },
|
||||
{ "put", shelp, put },
|
||||
{ "get", rhelp, get },
|
||||
{ "quit", qhelp, quit },
|
||||
{ "verbose", vhelp, setverbose },
|
||||
{ "trace", thelp, settrace },
|
||||
{ "status", sthelp, status },
|
||||
{ "binary", bnhelp, setbinary },
|
||||
{ "ascii", ashelp, setascii },
|
||||
{ "rexmt", xhelp, setrexmt },
|
||||
{ "timeout", ihelp, settimeout },
|
||||
{ "?", hhelp, help },
|
||||
{ 0 }
|
||||
};
|
||||
|
||||
struct cmd *getcmd(char *);
|
||||
char *tail(char *);
|
||||
|
||||
int
|
||||
main(int argc, char *argv[])
|
||||
{
|
||||
struct sockaddr_in s_in;
|
||||
|
||||
sp = getservbyname("tftp", "udp");
|
||||
if (sp == 0) {
|
||||
fprintf(stderr, "tftp: udp/tftp: unknown service\n");
|
||||
exit(1);
|
||||
}
|
||||
f = socket(AF_INET, SOCK_DGRAM, 0);
|
||||
if (f < 0) {
|
||||
perror("tftp: socket");
|
||||
exit(3);
|
||||
}
|
||||
bzero((char *)&s_in, sizeof (s_in));
|
||||
s_in.sin_family = AF_INET;
|
||||
if (bind(f, (struct sockaddr *)&s_in, sizeof (s_in)) < 0) {
|
||||
perror("tftp: bind");
|
||||
exit(1);
|
||||
}
|
||||
strcpy(mode, "netascii");
|
||||
signal(SIGINT, intr);
|
||||
if (argc > 1) {
|
||||
if (setjmp(toplevel) != 0)
|
||||
exit(0);
|
||||
setpeer(argc, argv);
|
||||
}
|
||||
if (setjmp(toplevel) != 0)
|
||||
(void)putchar('\n');
|
||||
|
||||
command();
|
||||
|
||||
return 0; /* Never reached */
|
||||
}
|
||||
|
||||
char hostname[MAXHOSTNAMELEN];
|
||||
|
||||
void
|
||||
setpeer(int argc, char *argv[])
|
||||
{
|
||||
struct hostent *host;
|
||||
|
||||
if (argc < 2) {
|
||||
strcpy(line, "Connect ");
|
||||
printf("(to) ");
|
||||
fgets(&line[strlen(line)], LBUFLEN-strlen(line), stdin);
|
||||
makeargv();
|
||||
argc = margc;
|
||||
argv = margv;
|
||||
}
|
||||
if ((argc < 2) || (argc > 3)) {
|
||||
printf("usage: %s host-name [port]\n", argv[0]);
|
||||
return;
|
||||
}
|
||||
if (inet_aton(argv[1], &peeraddr.sin_addr) != 0) {
|
||||
peeraddr.sin_family = AF_INET;
|
||||
(void) strncpy(hostname, argv[1], sizeof hostname);
|
||||
hostname[sizeof(hostname)-1] = '\0';
|
||||
} else {
|
||||
host = gethostbyname(argv[1]);
|
||||
if (host == 0) {
|
||||
connected = 0;
|
||||
printf("%s: unknown host\n", argv[1]);
|
||||
return;
|
||||
}
|
||||
peeraddr.sin_family = host->h_addrtype;
|
||||
bcopy(host->h_addr, &peeraddr.sin_addr, host->h_length);
|
||||
(void) strcpy(hostname, host->h_name);
|
||||
}
|
||||
port = sp->s_port;
|
||||
if (argc == 3) {
|
||||
port = atoi(argv[2]);
|
||||
if (port < 0) {
|
||||
printf("%s: bad port number\n", argv[2]);
|
||||
connected = 0;
|
||||
return;
|
||||
}
|
||||
port = htons(port);
|
||||
}
|
||||
connected = 1;
|
||||
}
|
||||
|
||||
struct modes {
|
||||
char *m_name;
|
||||
char *m_mode;
|
||||
} modes[] = {
|
||||
{ "ascii", "netascii" },
|
||||
{ "netascii", "netascii" },
|
||||
{ "binary", "octet" },
|
||||
{ "image", "octet" },
|
||||
{ "octet", "octet" },
|
||||
/* { "mail", "mail" }, */
|
||||
{ 0, 0 }
|
||||
};
|
||||
|
||||
void
|
||||
modecmd(int argc, char *argv[])
|
||||
{
|
||||
struct modes *p;
|
||||
char *sep;
|
||||
|
||||
if (argc < 2) {
|
||||
printf("Using %s mode to transfer files.\n", mode);
|
||||
return;
|
||||
}
|
||||
if (argc == 2) {
|
||||
for (p = modes; p->m_name; p++)
|
||||
if (strcmp(argv[1], p->m_name) == 0)
|
||||
break;
|
||||
if (p->m_name) {
|
||||
settftpmode(p->m_mode);
|
||||
return;
|
||||
}
|
||||
printf("%s: unknown mode\n", argv[1]);
|
||||
/* drop through and print usage message */
|
||||
}
|
||||
|
||||
printf("usage: %s [", argv[0]);
|
||||
sep = " ";
|
||||
for (p = modes; p->m_name; p++) {
|
||||
printf("%s%s", sep, p->m_name);
|
||||
if (*sep == ' ')
|
||||
sep = " | ";
|
||||
}
|
||||
printf(" ]\n");
|
||||
return;
|
||||
}
|
||||
|
||||
void
|
||||
setbinary(int argc, char *argv[])
|
||||
{
|
||||
|
||||
settftpmode("octet");
|
||||
}
|
||||
|
||||
void
|
||||
setascii(int argc, char *argv[])
|
||||
{
|
||||
|
||||
settftpmode("netascii");
|
||||
}
|
||||
|
||||
static void
|
||||
settftpmode(char *newmode)
|
||||
{
|
||||
strcpy(mode, newmode);
|
||||
if (verbose)
|
||||
printf("mode set to %s\n", mode);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Send file(s).
|
||||
*/
|
||||
void
|
||||
put(int argc, char *argv[])
|
||||
{
|
||||
int fd;
|
||||
int n;
|
||||
char *cp, *targ;
|
||||
|
||||
if (argc < 2) {
|
||||
strcpy(line, "send ");
|
||||
printf("(file) ");
|
||||
fgets(&line[strlen(line)], LBUFLEN-strlen(line), stdin);
|
||||
makeargv();
|
||||
argc = margc;
|
||||
argv = margv;
|
||||
}
|
||||
if (argc < 2) {
|
||||
putusage(argv[0]);
|
||||
return;
|
||||
}
|
||||
targ = argv[argc - 1];
|
||||
if (strchr(argv[argc - 1], ':')) {
|
||||
char *cp;
|
||||
struct hostent *hp;
|
||||
|
||||
for (n = 1; n < argc - 1; n++)
|
||||
if (strchr(argv[n], ':')) {
|
||||
putusage(argv[0]);
|
||||
return;
|
||||
}
|
||||
cp = argv[argc - 1];
|
||||
targ = strchr(cp, ':');
|
||||
*targ++ = 0;
|
||||
hp = gethostbyname(cp);
|
||||
if (hp == NULL) {
|
||||
fprintf(stderr, "tftp: %s: ", cp);
|
||||
herror((char *)NULL);
|
||||
return;
|
||||
}
|
||||
bcopy(hp->h_addr, (caddr_t)&peeraddr.sin_addr, hp->h_length);
|
||||
peeraddr.sin_family = hp->h_addrtype;
|
||||
connected = 1;
|
||||
strcpy(hostname, hp->h_name);
|
||||
}
|
||||
if (!connected) {
|
||||
printf("No target machine specified.\n");
|
||||
return;
|
||||
}
|
||||
if (argc < 4) {
|
||||
cp = argc == 2 ? tail(targ) : argv[1];
|
||||
fd = open(cp, O_RDONLY);
|
||||
if (fd < 0) {
|
||||
fprintf(stderr, "tftp: "); perror(cp);
|
||||
return;
|
||||
}
|
||||
if (verbose)
|
||||
printf("putting %s to %s:%s [%s]\n",
|
||||
cp, hostname, targ, mode);
|
||||
peeraddr.sin_port = port;
|
||||
sendfile(fd, targ, mode);
|
||||
return;
|
||||
}
|
||||
/* this assumes the target is a directory */
|
||||
/* on a remote unix system. hmmmm. */
|
||||
cp = strchr(targ, '\0');
|
||||
*cp++ = '/';
|
||||
for (n = 1; n < argc - 1; n++) {
|
||||
strcpy(cp, tail(argv[n]));
|
||||
fd = open(argv[n], O_RDONLY);
|
||||
if (fd < 0) {
|
||||
fprintf(stderr, "tftp: "); perror(argv[n]);
|
||||
continue;
|
||||
}
|
||||
if (verbose)
|
||||
printf("putting %s to %s:%s [%s]\n",
|
||||
argv[n], hostname, targ, mode);
|
||||
peeraddr.sin_port = port;
|
||||
sendfile(fd, targ, mode);
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
putusage(char *s)
|
||||
{
|
||||
printf("usage: %s file ... host:target, or\n", s);
|
||||
printf(" %s file ... target (when already connected)\n", s);
|
||||
}
|
||||
|
||||
/*
|
||||
* Receive file(s).
|
||||
*/
|
||||
void
|
||||
get(int argc, char *argv[])
|
||||
{
|
||||
int fd;
|
||||
int n;
|
||||
char *cp;
|
||||
char *src;
|
||||
|
||||
if (argc < 2) {
|
||||
strcpy(line, "get ");
|
||||
printf("(files) ");
|
||||
fgets(&line[strlen(line)], LBUFLEN-strlen(line), stdin);
|
||||
makeargv();
|
||||
argc = margc;
|
||||
argv = margv;
|
||||
}
|
||||
if (argc < 2) {
|
||||
getusage(argv[0]);
|
||||
return;
|
||||
}
|
||||
if (!connected) {
|
||||
for (n = 1; n < argc ; n++)
|
||||
if (strchr(argv[n], ':') == 0) {
|
||||
getusage(argv[0]);
|
||||
return;
|
||||
}
|
||||
}
|
||||
for (n = 1; n < argc ; n++) {
|
||||
src = strchr(argv[n], ':');
|
||||
if (src == NULL)
|
||||
src = argv[n];
|
||||
else {
|
||||
struct hostent *hp;
|
||||
|
||||
*src++ = 0;
|
||||
hp = gethostbyname(argv[n]);
|
||||
if (hp == NULL) {
|
||||
fprintf(stderr, "tftp: %s: ", argv[n]);
|
||||
herror((char *)NULL);
|
||||
continue;
|
||||
}
|
||||
bcopy(hp->h_addr, (caddr_t)&peeraddr.sin_addr,
|
||||
hp->h_length);
|
||||
peeraddr.sin_family = hp->h_addrtype;
|
||||
connected = 1;
|
||||
strcpy(hostname, hp->h_name);
|
||||
}
|
||||
if (argc < 4) {
|
||||
cp = argc == 3 ? argv[2] : tail(src);
|
||||
fd = creat(cp, 0644);
|
||||
if (fd < 0) {
|
||||
fprintf(stderr, "tftp: "); perror(cp);
|
||||
return;
|
||||
}
|
||||
if (verbose)
|
||||
printf("getting from %s:%s to %s [%s]\n",
|
||||
hostname, src, cp, mode);
|
||||
peeraddr.sin_port = port;
|
||||
recvfile(fd, src, mode);
|
||||
break;
|
||||
}
|
||||
cp = tail(src); /* new .. jdg */
|
||||
fd = creat(cp, 0644);
|
||||
if (fd < 0) {
|
||||
fprintf(stderr, "tftp: "); perror(cp);
|
||||
continue;
|
||||
}
|
||||
if (verbose)
|
||||
printf("getting from %s:%s to %s [%s]\n",
|
||||
hostname, src, cp, mode);
|
||||
peeraddr.sin_port = port;
|
||||
recvfile(fd, src, mode);
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
getusage(char *s)
|
||||
{
|
||||
printf("usage: %s host:file host:file ... file, or\n", s);
|
||||
printf(" %s file file ... file if connected\n", s);
|
||||
}
|
||||
|
||||
int rexmtval = TIMEOUT;
|
||||
|
||||
void
|
||||
setrexmt(int argc, char *argv[])
|
||||
{
|
||||
int t;
|
||||
|
||||
if (argc < 2) {
|
||||
strcpy(line, "Rexmt-timeout ");
|
||||
printf("(value) ");
|
||||
fgets(&line[strlen(line)], LBUFLEN-strlen(line), stdin);
|
||||
makeargv();
|
||||
argc = margc;
|
||||
argv = margv;
|
||||
}
|
||||
if (argc != 2) {
|
||||
printf("usage: %s value\n", argv[0]);
|
||||
return;
|
||||
}
|
||||
t = atoi(argv[1]);
|
||||
if (t < 0)
|
||||
printf("%s: bad value\n", argv[1]);
|
||||
else
|
||||
rexmtval = t;
|
||||
}
|
||||
|
||||
int maxtimeout = 5 * TIMEOUT;
|
||||
|
||||
void
|
||||
settimeout(int argc, char *argv[])
|
||||
{
|
||||
int t;
|
||||
|
||||
if (argc < 2) {
|
||||
strcpy(line, "Maximum-timeout ");
|
||||
printf("(value) ");
|
||||
fgets(&line[strlen(line)], LBUFLEN-strlen(line), stdin);
|
||||
makeargv();
|
||||
argc = margc;
|
||||
argv = margv;
|
||||
}
|
||||
if (argc != 2) {
|
||||
printf("usage: %s value\n", argv[0]);
|
||||
return;
|
||||
}
|
||||
t = atoi(argv[1]);
|
||||
if (t < 0)
|
||||
printf("%s: bad value\n", argv[1]);
|
||||
else
|
||||
maxtimeout = t;
|
||||
}
|
||||
|
||||
void
|
||||
status(int argc, char *argv[])
|
||||
{
|
||||
if (connected)
|
||||
printf("Connected to %s.\n", hostname);
|
||||
else
|
||||
printf("Not connected.\n");
|
||||
printf("Mode: %s Verbose: %s Tracing: %s\n", mode,
|
||||
verbose ? "on" : "off", trace ? "on" : "off");
|
||||
printf("Rexmt-interval: %d seconds, Max-timeout: %d seconds\n",
|
||||
rexmtval, maxtimeout);
|
||||
}
|
||||
|
||||
void
|
||||
intr(int sig)
|
||||
{
|
||||
|
||||
signal(SIGALRM, SIG_IGN);
|
||||
alarm(0);
|
||||
longjmp(toplevel, -1);
|
||||
}
|
||||
|
||||
char *
|
||||
tail(char *filename)
|
||||
{
|
||||
char *s;
|
||||
|
||||
while (*filename) {
|
||||
s = strrchr(filename, '/');
|
||||
if (s == NULL)
|
||||
break;
|
||||
if (s[1])
|
||||
return (s + 1);
|
||||
*s = '\0';
|
||||
}
|
||||
return (filename);
|
||||
}
|
||||
|
||||
/*
|
||||
* Command parser.
|
||||
*/
|
||||
static void
|
||||
command(void)
|
||||
{
|
||||
struct cmd *c;
|
||||
|
||||
for (;;) {
|
||||
printf("%s> ", prompt);
|
||||
if (fgets(line, LBUFLEN, stdin) == 0) {
|
||||
if (feof(stdin)) {
|
||||
exit(0);
|
||||
} else {
|
||||
continue;
|
||||
}
|
||||
}
|
||||
if ((line[0] == 0) || (line[0] == '\n'))
|
||||
continue;
|
||||
makeargv();
|
||||
if (margc == 0)
|
||||
continue;
|
||||
c = getcmd(margv[0]);
|
||||
if (c == (struct cmd *)-1) {
|
||||
printf("?Ambiguous command\n");
|
||||
continue;
|
||||
}
|
||||
if (c == 0) {
|
||||
printf("?Invalid command\n");
|
||||
continue;
|
||||
}
|
||||
(*c->handler)(margc, margv);
|
||||
}
|
||||
}
|
||||
|
||||
struct cmd *
|
||||
getcmd(char *name)
|
||||
{
|
||||
char *p, *q;
|
||||
struct cmd *c, *found;
|
||||
int nmatches, longest;
|
||||
|
||||
longest = 0;
|
||||
nmatches = 0;
|
||||
found = 0;
|
||||
for (c = cmdtab; (p = c->name) != NULL; c++) {
|
||||
for (q = name; *q == *p++; q++)
|
||||
if (*q == 0) /* exact match? */
|
||||
return (c);
|
||||
if (!*q) { /* the name was a prefix */
|
||||
if (q - name > longest) {
|
||||
longest = q - name;
|
||||
nmatches = 1;
|
||||
found = c;
|
||||
} else if (q - name == longest)
|
||||
nmatches++;
|
||||
}
|
||||
}
|
||||
if (nmatches > 1)
|
||||
return ((struct cmd *)-1);
|
||||
return (found);
|
||||
}
|
||||
|
||||
/*
|
||||
* Slice a string up into argc/argv.
|
||||
*/
|
||||
static void
|
||||
makeargv(void)
|
||||
{
|
||||
char *cp;
|
||||
char **argp = margv;
|
||||
|
||||
margc = 0;
|
||||
for (cp = line; *cp;) {
|
||||
while (isspace(*cp))
|
||||
cp++;
|
||||
if (*cp == '\0')
|
||||
break;
|
||||
*argp++ = cp;
|
||||
margc += 1;
|
||||
while (*cp != '\0' && !isspace(*cp))
|
||||
cp++;
|
||||
if (*cp == '\0')
|
||||
break;
|
||||
*cp++ = '\0';
|
||||
}
|
||||
*argp++ = 0;
|
||||
}
|
||||
|
||||
void
|
||||
quit(int argc, char *argv[])
|
||||
{
|
||||
|
||||
exit(0);
|
||||
}
|
||||
|
||||
/*
|
||||
* Help command.
|
||||
*/
|
||||
void
|
||||
help(int argc, char *argv[])
|
||||
{
|
||||
struct cmd *c;
|
||||
|
||||
if (argc == 1) {
|
||||
printf("Commands may be abbreviated. Commands are:\n\n");
|
||||
for (c = cmdtab; c->name; c++)
|
||||
printf("%-*s\t%s\n", (int)HELPINDENT, c->name, c->help);
|
||||
return;
|
||||
}
|
||||
while (--argc > 0) {
|
||||
char *arg;
|
||||
arg = *++argv;
|
||||
c = getcmd(arg);
|
||||
if (c == (struct cmd *)-1)
|
||||
printf("?Ambiguous help command %s\n", arg);
|
||||
else if (c == (struct cmd *)0)
|
||||
printf("?Invalid help command %s\n", arg);
|
||||
else
|
||||
printf("%s\n", c->help);
|
||||
}
|
||||
}
|
||||
|
||||
void
|
||||
settrace(int argc, char *argv[])
|
||||
{
|
||||
trace = !trace;
|
||||
printf("Packet tracing %s.\n", trace ? "on" : "off");
|
||||
}
|
||||
|
||||
void
|
||||
setverbose(int argc, char *argv[])
|
||||
{
|
||||
verbose = !verbose;
|
||||
printf("Verbose mode %s.\n", verbose ? "on" : "off");
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue