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-rw-r--r--remote_cmds/tftp.tproj/main.c920
1 files changed, 920 insertions, 0 deletions
diff --git a/remote_cmds/tftp.tproj/main.c b/remote_cmds/tftp.tproj/main.c
new file mode 100644
index 0000000..f223726
--- /dev/null
+++ b/remote_cmds/tftp.tproj/main.c
@@ -0,0 +1,920 @@
+/* $NetBSD: main.c,v 1.19 2003/10/02 23:31:52 itojun 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. 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
+__attribute__((__used__))
+static const char copyright[] =
+"@(#) Copyright (c) 1983, 1993\n\
+ The Regents of the University of California. All rights reserved.\n";
+#endif
+
+#if 0
+#ifndef lint
+static char sccsid[] = "@(#)main.c 8.1 (Berkeley) 6/6/93";
+#endif
+#endif
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD: src/usr.bin/tftp/main.c,v 1.22 2005/10/19 15:37:42 stefanf Exp $");
+
+/* Many bug fixes are from Jim Guyton <guyton@rand-unix> */
+
+/*
+ * TFTP User Program -- Command Interface.
+ */
+#include <sys/param.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/file.h>
+#include <sys/param.h>
+
+#include <netinet/in.h>
+
+#include <arpa/inet.h>
+#include <arpa/tftp.h>
+
+#include <ctype.h>
+#include <fcntl.h>
+#include <err.h>
+#include <histedit.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 MAXLINE 200
+#define TIMEOUT 5 /* secs between rexmt's */
+#define MAXSEGSIZE 65464
+struct sockaddr_storage peeraddr;
+int f;
+int trace;
+int verbose;
+int tsize=0;
+int tout=0;
+int def_blksize=SEGSIZE;
+int blksize=SEGSIZE;
+int connected;
+char mode[32];
+char line[MAXLINE];
+int margc;
+#define MAX_MARGV 20
+char *margv[MAX_MARGV];
+jmp_buf toplevel;
+volatile int txrx_error;
+
+void get(int, char **);
+void help(int, char **);
+void intr(int);
+void modecmd(int, char **);
+void put(int, char **);
+void quit(int, char **);
+void setascii(int, char **);
+void setbinary(int, char **);
+void setpeer0(char *, const char *);
+void setpeer(int, char **);
+void setrexmt(int, char **);
+void settimeout(int, char **);
+void settrace(int, char **);
+void setverbose(int, char **);
+#ifdef __APPLE__
+void setblksize(int, char **);
+void settsize(int, char **);
+void settimeoutopt(int, char **);
+#endif
+void status(int, char **);
+#ifdef __APPLE__
+char *tail(char *);
+int main(int, char *[]);
+void intr(int);
+struct cmd *getcmd(char *);
+#endif
+
+static void command(void) __dead2;
+static const char *command_prompt(void);
+
+static void getusage(char *);
+static void makeargv(void);
+static void putusage(char *);
+static void settftpmode(const char *);
+
+char *tail(char *);
+struct cmd *getcmd(char *);
+
+#define HELPINDENT (sizeof("connect"))
+
+struct cmd {
+ const char *name;
+ char *help;
+ void (*handler)(int, char **);
+};
+
+char vhelp[] = "toggle verbose mode";
+char thelp[] = "toggle packet tracing";
+#ifdef __APPLE__
+char tshelp[] = "toggle extended tsize option";
+char tohelp[] = "toggle extended timeout option";
+char blhelp[] = "set an alternative blocksize (def. 512)";
+#endif
+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 },
+#ifdef __APPLE__
+ { "blksize", blhelp, setblksize },
+ { "tsize", tshelp, settsize },
+#endif
+ { "trace", thelp, settrace },
+ { "status", sthelp, status },
+ { "binary", bnhelp, setbinary },
+ { "ascii", ashelp, setascii },
+ { "rexmt", xhelp, setrexmt },
+ { "timeout", ihelp, settimeout },
+#ifdef __APPLE__
+ { "tout", tohelp, settimeoutopt },
+#endif
+ { "?", hhelp, help },
+ { NULL, NULL, NULL }
+};
+
+int
+main(argc, argv)
+ int argc;
+ char *argv[];
+{
+ int c;
+
+ f = -1;
+ strcpy(mode, "netascii");
+ signal(SIGINT, intr);
+
+ setprogname(argv[0]);
+ while ((c = getopt(argc, argv, "e")) != -1) {
+ switch (c) {
+ case 'e':
+ blksize = MAXSEGSIZE;
+ strcpy(mode, "octet");
+ tsize = 1;
+ tout = 1;
+ break;
+ default:
+ printf("usage: %s [-e] host-name [port]\n",
+ getprogname());
+ exit(1);
+ }
+ }
+ argc -= optind;
+ argv += optind;
+
+ if (argc >= 1) {
+ if (setjmp(toplevel) != 0)
+ exit(txrx_error);
+ argc++;
+ argv--;
+ setpeer(argc, argv);
+ }
+ if (setjmp(toplevel) != 0)
+ (void)putchar('\n');
+ command();
+ return (0);
+}
+
+char hostname[MAXHOSTNAMELEN];
+
+void
+setpeer0(host, port)
+ char *host;
+ const char *port;
+{
+ struct addrinfo hints, *res0, *res;
+ int error, soopt;
+ struct sockaddr_storage ss;
+ const char *cause = "unknown";
+
+ if (connected) {
+ close(f);
+ f = -1;
+ }
+ connected = 0;
+
+ memset(&hints, 0, sizeof(hints));
+ hints.ai_family = PF_UNSPEC;
+ hints.ai_socktype = SOCK_DGRAM;
+ hints.ai_protocol = IPPROTO_UDP;
+ hints.ai_flags = AI_CANONNAME;
+ if (!port)
+ port = "tftp";
+ error = getaddrinfo(host, port, &hints, &res0);
+ if (error) {
+ warnx("%s", gai_strerror(error));
+ return;
+ }
+
+ for (res = res0; res; res = res->ai_next) {
+ if (res->ai_addrlen > sizeof(peeraddr))
+ continue;
+ f = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
+ if (f < 0) {
+ cause = "socket";
+ continue;
+ }
+
+ memset(&ss, 0, sizeof(ss));
+ ss.ss_family = res->ai_family;
+ ss.ss_len = res->ai_addrlen;
+ if (bind(f, (struct sockaddr *)&ss, ss.ss_len) < 0) {
+ cause = "bind";
+ close(f);
+ f = -1;
+ continue;
+ }
+
+ break;
+ }
+
+ if (f >= 0) {
+ soopt = 65536;
+ if (setsockopt(f, SOL_SOCKET, SO_SNDBUF, &soopt, sizeof(soopt))
+ < 0) {
+ close(f);
+ f = -1;
+ cause = "setsockopt SNDBUF";
+ }
+ if (setsockopt(f, SOL_SOCKET, SO_RCVBUF, &soopt, sizeof(soopt))
+ < 0) {
+ close(f);
+ f = -1;
+ cause = "setsockopt RCVBUF";
+ }
+ }
+
+ if (f < 0)
+ warn("%s", cause);
+ else {
+ /* res->ai_addr <= sizeof(peeraddr) is guaranteed */
+ memcpy(&peeraddr, res->ai_addr, res->ai_addrlen);
+ if (res->ai_canonname) {
+ (void) strlcpy(hostname, res->ai_canonname,
+ sizeof(hostname));
+ } else
+ (void) strlcpy(hostname, host, sizeof(hostname));
+ connected = 1;
+ }
+
+ freeaddrinfo(res0);
+}
+
+void
+setpeer(argc, argv)
+ int argc;
+ char *argv[];
+{
+
+ if (argc < 2) {
+ strcpy(line, "Connect ");
+ printf("(to) ");
+ fgets(&line[strlen(line)], sizeof line - strlen(line), stdin);
+ makeargv();
+ argc = margc;
+ argv = margv;
+ }
+ if ((argc < 2) || (argc > 3)) {
+ printf("usage: %s [-e] host-name [port]\n", getprogname());
+ return;
+ }
+ if (argc == 3)
+ setpeer0(argv[1], argv[2]);
+ else
+ setpeer0(argv[1], NULL);
+}
+
+struct modes {
+ const char *m_name;
+ const char *m_mode;
+} modes[] = {
+ { "ascii", "netascii" },
+ { "netascii", "netascii" },
+ { "binary", "octet" },
+ { "image", "octet" },
+ { "octet", "octet" },
+/* { "mail", "mail" }, */
+ { 0, 0 }
+};
+
+void
+modecmd(argc, argv)
+ int argc;
+ char *argv[];
+{
+ struct modes *p;
+ const 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(argc, argv)
+ int argc __unused;
+ char *argv[] __unused;
+{
+
+ settftpmode("octet");
+}
+
+void
+setascii(argc, argv)
+ int argc __unused;
+ char *argv[] __unused;
+{
+
+ settftpmode("netascii");
+}
+
+static void
+settftpmode(newmode)
+ const char *newmode;
+{
+ strcpy(mode, newmode);
+ if (verbose)
+ printf("mode set to %s\n", mode);
+}
+
+
+/*
+ * Send file(s).
+ */
+void
+put(argc, argv)
+ int argc;
+ char *argv[];
+{
+ int fd;
+ int n;
+ char *cp, *targ;
+#ifdef __APPLE__
+ char targbuf[PATH_MAX];
+#endif /* __APPLE__ */
+
+ if (argc < 2) {
+ strcpy(line, "send ");
+ printf("(file) ");
+ fgets(&line[strlen(line)], sizeof line - strlen(line), stdin);
+ makeargv();
+ argc = margc;
+ argv = margv;
+ }
+ if (argc < 2) {
+ putusage(argv[0]);
+ return;
+ }
+ targ = argv[argc - 1];
+ if (rindex(argv[argc - 1], ':')) {
+ char *lcp;
+
+ for (n = 1; n < argc - 1; n++)
+ if (index(argv[n], ':')) {
+ putusage(argv[0]);
+ return;
+ }
+ lcp = argv[argc - 1];
+ targ = rindex(lcp, ':');
+ *targ++ = 0;
+ if (lcp[0] == '[' && lcp[strlen(lcp) - 1] == ']') {
+ lcp[strlen(lcp) - 1] = '\0';
+ lcp++;
+ }
+ setpeer0(lcp, NULL);
+ }
+ 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) {
+ warn("%s", cp);
+ return;
+ }
+ if (verbose)
+ printf("putting %s to %s:%s [%s]\n",
+ cp, hostname, targ, mode);
+ xmitfile(fd, targ, mode);
+ return;
+ }
+ /* this assumes the target is a directory */
+ /* on a remote unix system. hmmmm. */
+#ifdef __APPLE__
+ snprintf(targbuf, sizeof(targbuf), "%s/", targ);
+ cp = targbuf + strlen(targbuf);
+#else /* !__APPLE__ */
+ cp = index(targ, '\0');
+ *cp++ = '/';
+#endif /* __APPLE__ */
+ for (n = 1; n < argc - 1; n++) {
+#ifdef __APPLE__
+ strlcpy(cp, tail(argv[n]), sizeof(targbuf) - (cp - targbuf));
+#else /* !__APPLE__ */
+ strcpy(cp, tail(argv[n]));
+#endif /* __APPLE__ */
+ fd = open(argv[n], O_RDONLY);
+ if (fd < 0) {
+ warn("%s", argv[n]);
+ continue;
+ }
+ if (verbose)
+ printf("putting %s to %s:%s [%s]\n",
+#ifdef __APPLE__
+ argv[n], hostname, targbuf, mode);
+#else /* !__APPLE__ */
+ argv[n], hostname, targ, mode);
+#endif /* __APPLE__ */
+ xmitfile(fd, targ, mode);
+ }
+}
+
+static void
+putusage(s)
+ 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(argc, argv)
+ int argc;
+ char *argv[];
+{
+ int fd;
+ int n;
+ char *cp;
+ char *src;
+
+ if (argc < 2) {
+ strcpy(line, "get ");
+ printf("(files) ");
+ fgets(&line[strlen(line)], sizeof line - strlen(line), stdin);
+ makeargv();
+ argc = margc;
+ argv = margv;
+ }
+ if (argc < 2) {
+ getusage(argv[0]);
+ return;
+ }
+ if (!connected) {
+ for (n = 1; n < argc ; n++)
+ if (rindex(argv[n], ':') == 0) {
+ getusage(argv[0]);
+ return;
+ }
+ }
+ for (n = 1; n < argc ; n++) {
+ src = rindex(argv[n], ':');
+ if (src == NULL)
+ src = argv[n];
+ else {
+ char *lcp;
+
+ *src++ = 0;
+ lcp = argv[n];
+ if (lcp[0] == '[' && lcp[strlen(lcp) - 1] == ']') {
+ lcp[strlen(lcp) - 1] = '\0';
+ lcp++;
+ }
+ setpeer0(lcp, NULL);
+ if (!connected)
+ continue;
+ }
+ if (argc < 4) {
+ cp = argc == 3 ? argv[2] : tail(src);
+ fd = creat(cp, 0644);
+ if (fd < 0) {
+ warn("%s", cp);
+ return;
+ }
+ if (verbose)
+ printf("getting from %s:%s to %s [%s]\n",
+ hostname, src, cp, mode);
+ recvfile(fd, src, mode);
+ break;
+ }
+ cp = tail(src); /* new .. jdg */
+ fd = creat(cp, 0644);
+ if (fd < 0) {
+ warn("%s", cp);
+ continue;
+ }
+ if (verbose)
+ printf("getting from %s:%s to %s [%s]\n",
+ hostname, src, cp, mode);
+ recvfile(fd, src, mode);
+ }
+}
+
+static void
+getusage(s)
+ char *s;
+{
+ printf("usage: %s host:file host:file ... file, or\n", s);
+ printf(" %s file file ... file if connected\n", s);
+}
+
+void
+setblksize(argc, argv)
+ int argc;
+ char *argv[];
+{
+ int t;
+
+ if (argc < 2) {
+ strcpy(line, "blksize ");
+ printf("(blksize) ");
+ fgets(&line[strlen(line)], sizeof line - 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 < 8 || t > 65464)
+ printf("%s: bad value\n", argv[1]);
+ else
+ blksize = t;
+}
+
+int def_rexmtval = TIMEOUT;
+int rexmtval = TIMEOUT;
+
+void
+setrexmt(argc, argv)
+ int argc;
+ char *argv[];
+{
+ int t;
+
+ if (argc < 2) {
+ strcpy(line, "Rexmt-timeout ");
+ printf("(value) ");
+ fgets(&line[strlen(line)], sizeof line - 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(argc, argv)
+ int argc;
+ char *argv[];
+{
+ int t;
+
+ if (argc < 2) {
+ strcpy(line, "Maximum-timeout ");
+ printf("(value) ");
+ fgets(&line[strlen(line)], sizeof line - 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(argc, argv)
+ int argc __unused;
+ char *argv[] __unused;
+{
+ 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(dummy)
+ int dummy __unused;
+{
+
+ signal(SIGALRM, SIG_IGN);
+ alarm(0);
+ longjmp(toplevel, -1);
+}
+
+char *
+tail(filename)
+ char *filename;
+{
+ char *s;
+
+ while (*filename) {
+ s = rindex(filename, '/');
+ if (s == NULL)
+ break;
+ if (s[1])
+ return (s + 1);
+ *s = '\0';
+ }
+ return (filename);
+}
+
+static const char *
+command_prompt()
+{
+
+ return ("tftp> ");
+}
+
+/*
+ * Command parser.
+ */
+static void
+command()
+{
+ HistEvent he;
+ struct cmd *c;
+ static EditLine *el;
+ static History *hist;
+ const char *bp;
+ char *cp;
+ int len, num, vrbose;
+
+ vrbose = isatty(0);
+ if (vrbose) {
+ el = el_init("tftp", stdin, stdout, stderr);
+ hist = history_init();
+ history(hist, &he, H_SETSIZE, 100);
+ el_set(el, EL_HIST, history, hist);
+ el_set(el, EL_EDITOR, "emacs");
+ el_set(el, EL_PROMPT, command_prompt);
+ el_set(el, EL_SIGNAL, 1);
+ el_source(el, NULL);
+ }
+ for (;;) {
+ if (vrbose) {
+ if ((bp = el_gets(el, &num)) == NULL || num == 0)
+ exit(0);
+ len = (num > MAXLINE) ? MAXLINE : num;
+ memcpy(line, bp, len);
+ line[len] = '\0';
+ history(hist, &he, H_ENTER, bp);
+ } else {
+ if (fgets(line, sizeof line , stdin) == 0) {
+ if (feof(stdin)) {
+ exit(txrx_error);
+ } else {
+ continue;
+ }
+ }
+ }
+ if ((cp = strchr(line, '\n')))
+ *cp = '\0';
+ if (line[0] == 0)
+ 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(name)
+ char *name;
+{
+ const 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()
+{
+ char *cp;
+ char **argp = margv;
+
+ margc = 0;
+ if ((cp = strchr(line, '\n')))
+ *cp = '\0';
+ for (cp = line; margc < MAX_MARGV - 1 && *cp;) {
+ while (isspace((unsigned char)*cp))
+ cp++;
+ if (*cp == '\0')
+ break;
+ *argp++ = cp;
+ margc += 1;
+ while (*cp != '\0' && !isspace((unsigned char)*cp))
+ cp++;
+ if (*cp == '\0')
+ break;
+ *cp++ = '\0';
+ }
+ *argp++ = 0;
+}
+
+void
+quit(argc, argv)
+ int argc __unused;
+ char *argv[] __unused;
+{
+ exit(txrx_error);
+}
+
+/*
+ * Help command.
+ */
+void
+help(argc, argv)
+ 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(argc, argv)
+ int argc __unused;
+ char **argv __unused;
+{
+ trace = !trace;
+ printf("Packet tracing %s.\n", trace ? "on" : "off");
+}
+
+void
+setverbose(argc, argv)
+ int argc __unused;
+ char **argv __unused;
+{
+ verbose = !verbose;
+ printf("Verbose mode %s.\n", verbose ? "on" : "off");
+}
+
+void
+settsize(argc, argv)
+ int argc __unused;
+ char **argv __unused;
+{
+ tsize = !tsize;
+ printf("Tsize mode %s.\n", tsize ? "on" : "off");
+}
+
+void
+settimeoutopt(argc, argv)
+ int argc __unused;
+ char **argv __unused;
+{
+ tout = !tout;
+ printf("Timeout option %s.\n", tout ? "on" : "off");
+}