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Allow command line control of ppp through both

Browse Source 
TCP and AF_LOCAL sockets.
This commit is contained in:
Brian Somers 1997-06-28 01:04:54 +00:00
parent 58db75841d
commit c957ff409a
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=27008
4 changed files with 360 additions and 3 deletions
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6
usr.sbin/Makefile
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@ -1,5 +1,5 @@
# From: @(#)Makefile 5.20 (Berkeley) 6/12/93
# $Id: Makefile,v 1.108 1997/05/29 14:21:39 wpaul Exp $
# $Id: Makefile,v 1.109 1997/06/22 04:23:10 brian Exp $
# XXX MISSING: mkproto
SUBDIR= ac accton adduser amd arp bootparamd cdcontrol chown chroot ckdist \
@ -7,8 +7,8 @@ SUBDIR= ac accton adduser amd arp bootparamd cdcontrol chown chroot ckdist \
keyserv kgmon kvm_mkdb lpr manctl mkdosfs mrouted mtest mtree \
named named.reload named.restart natd ndc \
newsyslog nslookup pccard pciconf pcvt pkg_install portmap \
ppp pppd pppstats pstat pw pwd_mkdb quot quotaon rarpd repquota rmt \
rndcontrol rpc.lockd rpc.statd rpc.yppasswdd rpc.ypxfrd \
ppp pppctl pppd pppstats pstat pw pwd_mkdb quot quotaon rarpd \
repquota rmt rndcontrol rpc.lockd rpc.statd rpc.yppasswdd rpc.ypxfrd \
rpc.ypupdated rwhod sa sendmail sliplogin slstat \
spray sysctl syslogd tcpdump timed traceroute trpt tzsetup vipw \
vnconfig watch wlconfig wormcontrol xntpd xten ypbind yp_mkdb \

8
usr.sbin/pppctl/Makefile Normal file
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# $Id:$
PROG= pppctl
SRCS= pppctl.c
CFLAGS+=-Wall
MAN8= pppctl.8
.include <bsd.prog.mk>

76
usr.sbin/pppctl/pppctl.8 Normal file
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.\" $Id:$
.Dd 26 June 1997
.Os FreeBSD
.Dt PPPCTL 8
.Sh NAME
.Nm pppctl
.Nd
PPP control program
.Sh SYNOPSIS
.Nm
.Op Fl v
.Op Fl t Ar n
.Op Fl p Ar passwd
.Ar Port | LocalSocket
.Ar command
.Op Ar ;command
.Ar ...
.Sh DESCRIPTION
This program provides command line control of the
.Nm ppp
daemon. Its primary use is to facilitate simple scripts that
control a running daemon.
.Nm Pppctl
expects at least two arguments. The first is interpreted as the
socket on which the
.Nm ppp
daemon is listening. If the socket contains a leading '/', it
is taken as an AF_LOCAL socket. If it consists entirely of numbers,
it is interpreted as a TCP port number on localhost. If it contains
any characters, the first of which is not a '/' character, it is
interpreted as an entry of type "tcp" from
.Pa /etc/services .
All remaining arguments are concatenated to form the command(s) that
will be sent to the
.Nm ppp
daemon. If any semi-colon characters are found, they are treated
as command delimiters, allowing more than one command in a given
"session". For example;
pppctl 3000 set timeout 300\\; show timeout
Don't forget to escape or quote the ';' as it is a special character
for most shells.
The following command line options are available:
.Bl -tag -width Ds
.It Fl v
Display all data sent to and received from the
.Nm ppp
daemon. Normally,
.Nm pppctl
displays only non-prompt lines received.
.It Fl t Ar n
Use a timeout of
.Ar n
instead of the default 2 seconds. This may be required if you
wish to control a daemon over a slow (or even a dialup) link.
.It Fl p Ar passwd
Specify the password required by the
.Nm ppp
daemon. If this switch is not used,
.Nm
will prompt for a password once it has successfully connected to
.Nm ppp
(assuming, of course, that one is required).
.El
.Sh SEE ALSO
.Xr ppp 8 ,
.Xr services 5
.Sh HISTORY
The
.Nm
command first appeared in FreeBSD 2.2.5.

273
usr.sbin/pppctl/pppctl.c Normal file
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#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <sys/un.h>
#include <netdb.h>
#include <signal.h>
#include <string.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#define LINELEN 2048
static char Buffer[LINELEN], Command[LINELEN];
static int Usage()
{
fprintf(stderr, "Usage: pppctl [-v] [ -t n ] [ -p passwd ] Port|LocalSock command[;command]...\n");
fprintf(stderr, " -v tells pppctl to output all conversation\n");
fprintf(stderr, " -t n specifies a timeout of n seconds (default 2)\n");
fprintf(stderr, " -p passwd specifies your password\n");
return 1;
}
static int TimedOut = 0;
void Timeout(int Sig)
{
TimedOut = 1;
}
#define REC_PASSWD (1)
#define REC_SHOW (2)
#define REC_VERBOSE (4)
static char *passwd;
int Receive(int fd, unsigned TimeoutVal, int display)
{
int Result;
struct sigaction act, oact;
int len;
char *last;
TimedOut = 0;
if (TimeoutVal) {
act.sa_handler = Timeout;
sigemptyset(&act.sa_mask);
act.sa_flags = 0;
sigaction(SIGALRM, &act, &oact);
alarm(TimeoutVal);
}
len = 0;
while (Result = read(fd, Buffer+len, sizeof(Buffer)-len-1), Result != -1) {
len += Result;
Buffer[len] = '\0';
if (TimedOut) {
if (display & REC_VERBOSE)
write(1,Buffer,len);
Result = -1;
break;
} else if (len > 2 && !strcmp(Buffer+len-2, "> ")) {
if (display & (REC_SHOW|REC_VERBOSE)) {
if (display & REC_VERBOSE)
last = Buffer+len-1;
else
last = rindex(Buffer, '\n');
if (last) {
*++last = '\0';
write(1, Buffer, last-Buffer);
}
}
for (last = Buffer+len-2; last > Buffer && *last != ' '; last--)
;
if (last > Buffer+3 && !strncmp(last-3, " on", 3)) {
/* a password is required ! */
if (display & REC_PASSWD) {
if (TimeoutVal) {
alarm(0);
sigaction(SIGALRM, &oact, 0);
}
/* password time */
if (!passwd)
passwd = getpass("Password: ");
sprintf(Buffer, "passwd %s\n", passwd);
bzero(passwd, strlen(passwd));
if (display & REC_VERBOSE)
write(1, Buffer, strlen(Buffer));
write(fd, Buffer, strlen(Buffer));
bzero(Buffer, strlen(Buffer));
return Receive(fd, TimeoutVal, display & ~REC_PASSWD);
}
Result = 1;
} else
Result = 0;
break;
}
}
if (TimedOut)
Result = -1;
if (TimeoutVal) {
alarm(0);
sigaction(SIGALRM, &oact, 0);
}
return Result;
}
int
main(int argc, char **argv)
{
struct servent *s;
struct hostent *h;
struct sockaddr *sock;
struct sockaddr_in ifsin;
struct sockaddr_un ifsun;
int socksz, arg, fd, len, verbose;
unsigned TimeoutVal;
char *DoneWord = "x", *next, *start;
struct sigaction act, oact;
verbose = 0;
TimeoutVal = 2;
for (arg = 1; arg < argc; arg++)
if (*argv[arg] == '-') {
for (start = argv[arg] + 1; *start; start++)
switch (*start) {
case 't':
TimeoutVal = (unsigned)atoi
(start[1] ? start + 1 : argv[++arg]);
start = DoneWord;
break;
case 'v':
verbose = REC_VERBOSE;
break;
case 'p':
passwd = (start[1] ? start + 1 : argv[++arg]);
start = DoneWord;
break;
default:
return Usage();
}
}
else
break;
if (argc < arg + 2)
return Usage();
if (*argv[arg] == '/') {
sock = (struct sockaddr *)&ifsun;
socksz = sizeof ifsun;
ifsun.sun_len = strlen(argv[arg]);
if (ifsun.sun_len > sizeof ifsun.sun_path - 1) {
fprintf(stderr, "%s: Path too long\n", argv[arg]);
return 1;
}
ifsun.sun_family = AF_LOCAL;
strcpy(ifsun.sun_path, argv[arg]);
if (fd = socket(AF_LOCAL, SOCK_STREAM, 0), fd < 0) {
fprintf(stderr, "Cannot create local domain socket\n");
return 2;
}
} else {
sock = (struct sockaddr *)&ifsin;
socksz = sizeof ifsin;
if ((h = gethostbyname("localhost")) == 0) {
fprintf(stderr, "Cannot resolve localhost\n");
return 1;
}
if (strspn(argv[arg], "0123456789") == strlen(argv[arg]))
ifsin.sin_port = htons(atoi(argv[arg]));
else if (s = getservbyname(argv[arg], "tcp"), !s) {
fprintf(stderr, "%s isn't a valid port or service!\n", argv[arg]);
return Usage();
}
else
ifsin.sin_port = s->s_port;
ifsin.sin_len = sizeof(ifsin);
ifsin.sin_family = AF_INET;
ifsin.sin_addr.s_addr = *(u_long *)h->h_addr_list[0];
if (fd = socket(AF_INET, SOCK_STREAM, 0), fd < 0) {
fprintf(stderr, "Cannot create internet socket\n");
return 2;
}
}
TimedOut = 0;
if (TimeoutVal) {
act.sa_handler = Timeout;
sigemptyset(&act.sa_mask);
act.sa_flags = 0;
sigaction(SIGALRM, &act, &oact);
alarm(TimeoutVal);
}
if (connect(fd, sock, socksz) < 0) {
if (TimeoutVal) {
alarm(0);
sigaction(SIGALRM, &oact, 0);
}
if (TimedOut)
fputs("Timeout: ", stderr);
fprintf(stderr, "Cannot connect to socket %s\n", argv[arg]);
close(fd);
return 3;
}
if (TimeoutVal) {
alarm(0);
sigaction(SIGALRM, &oact, 0);
}
len = 0;
Command[sizeof(Command)-1] = '\0';
for (arg++; arg < argc; arg++) {
if (len && len < sizeof(Command)-1)
strcpy(Command+len++, " ");
strncpy(Command+len, argv[arg], sizeof(Command)-len-1);
len += strlen(Command+len);
}
switch (Receive(fd, TimeoutVal, verbose | REC_PASSWD))
{
case 1:
fprintf(stderr, "Password incorrect\n");
break;
case 0:
start = Command;
do {
next = index(start, ';');
while (*start == ' ' || *start == '\t')
start++;
if (next)
*next = '\0';
strcpy(Buffer, start);
Buffer[sizeof(Buffer)-2] = '\0';
strcat(Buffer, "\n");
if (verbose)
write(1, Buffer, strlen(Buffer));
write(fd, Buffer, strlen(Buffer));
if (Receive(fd, TimeoutVal, verbose | REC_SHOW) != 0) {
fprintf(stderr, "No reply from ppp\n");
break;
}
if (next)
start = ++next;
} while (next && *next);
if (verbose)
puts("");
break;
default:
fprintf(stderr, "ppp is not responding\n");
break;
}
close(fd);
return 0;
}