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Ham Radio 2000 #2
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PPPCMD.C
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C/C++ Source or Header
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1996-12-23
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530 lines
/*
* PPPCMD.C -- PPP related user commands
*
* This implementation of PPP is declared to be in the public domain.
*
* Jan 91 Bill_Simpson@um.cc.umich.edu
* Computer Systems Consulting Services
*
* Acknowledgements and correction history may be found in PPP.C
*/
#include "global.h"
#include "mbuf.h"
#include "iface.h"
#include "pktdrvr.h"
#include "ppp.h"
#include "pppfsm.h"
#include "ppplcp.h"
#include "ppppap.h"
#include "pppipcp.h"
#include "cmdparse.h"
#if !defined(_lint)
static char rcsid[] OPTIONAL = "$Id: pppcmd.c,v 1.15 1996/12/23 20:37:36 root Exp root $";
#endif
#ifdef PPP
static struct iface *ppp_lookup (char *ifname);
static int doppp_quick (int argc, char *argv[], void *p);
static int doppp_trace (int argc, char *argv[], void *p);
static int spot (int16 work, int16 want, int16 will, int16 mask);
static void genstat (struct ppp_s * ppp_p);
static void lcpstat (struct fsm_s * fsm_p);
static void papstat (struct fsm_s * fsm_p);
static void ipcpstat (struct fsm_s * fsm_p);
static int dotry_nak (int argc, char *argv[], void *p);
static int dotry_req (int argc, char *argv[], void *p);
static int dotry_terminate (int argc, char *argv[], void *p);
/* "ppp" subcommands */
static struct cmds Pppcmds[] =
{
{ "ipcp", doppp_ipcp, 0, 0, NULLCHAR },
{ "lcp", doppp_lcp, 0, 0, NULLCHAR },
{ "pap", doppp_pap, 0, 0, NULLCHAR },
{ "quick", doppp_quick, 0, 0, NULLCHAR },
{ "trace", doppp_trace, 0, 0, NULLCHAR },
{ NULLCHAR, NULL, 0, 0, NULLCHAR }
};
/* { "ppp <iface> <ncp> try" subcommands */
static struct cmds PppTrycmds[] =
{
{ "configure", dotry_req, 0, 0, NULLCHAR },
{ "failure", dotry_nak, 0, 0, NULLCHAR },
{ "terminate", dotry_terminate,0, 0, NULLCHAR },
{ NULLCHAR, NULL, 0, 0, NULLCHAR }
};
static const char *PPPStatus[] =
{
"Physical Line Dead",
"Establishment Phase",
"Authentication Phase",
"Network Protocol Phase",
"Termination Phase"
};
static const char *NCPStatus[] =
{
"Closed",
"Listening -- waiting for remote host to attempt open",
"Starting configuration exchange",
"Remote host accepted our request; waiting for remote request",
"We accepted remote request; waiting for reply to our request",
"Opened",
"Terminate request sent to remote host"
};
#ifdef CATALOG
#include "catalog.h"
#define CAT pppcmd_catalog
#define ifaceunk __STR(0)
#define notPPP __STR(1)
#define syntaxPPP __STR(2)
#define PPPtracing __STR(3)
#else /* CATALOG */
static const char ifaceunk[] = "%s: Interface unknown\n";
static const char notPPP[] = "%s: not a PPP interface\n";
static const char syntaxPPP[] = "ppp <iface> required\n";
static const char PPPtracing[] = "PPP tracing";
#endif /* CATALOG */
static const char stat1[] = "%10lu In, %10lu Flags,%6u ME, %6u FE, %6u CSE, %6u other\n";
static const char stat2[] = "\t\t%6u Lcp,%6u Pap,%6u IPcp,%6u Unknown\n";
static const char stat3[] = "%10lu Out, %10lu Flags,%6u ME, %6u Fail\n";
static const char stat4[] = "\t\t%6u Lcp,%6u Pap,%6u IPcp\n";
static const char PAPstr[] = "PAP %s\n";
static const char LCPstr[] = "LCP %s\n";
static const char header[] = "\t\t MRU\t ACCM\t\t AP\t PFC ACFC Magic\n\tLocal:\t";
static const char yes[] = "Yes ";
static const char no[] = "No ";
static const char unused[] = "unused\n";
static const char none[] = "None\t";
static const char none2[] = "none";
static const char papmessage[] = "\tMessage: '%s'\n";
static const char IPCPstr[] = "IPCP %s\n";
static const char localaddr[] = "\tlocal IP address: %s";
static const char remoteaddr[] = " remote IP address: %s\n";
static const char ipcpstatstr[] = " %s\tTCP header compression enabled: slots = %d, flag = 0x%02x\n";
static const char badval[] = "Value %s (%d) must be > 0\n";
static const char intstr[] = "%d\n";
static const char longstr[] = "%d\n";
static const char openfor[] = "\t(open for %s)";
static const char hexstr[] = "0x%08lx%c";
static const char hexstr2[] = "0x%04x\t";
static const char paptab[] = "Pap\t";
static const char remotestr[] = "\tRemote:\t";
static const char int4str[] = "%4d\t";
int PPPtrace;
struct iface *PPPiface; /* iface for trace */
/****************************************************************************/
static struct iface *
ppp_lookup (char *ifname)
{
register struct iface *ifp;
if ((ifp = if_lookup (ifname)) == NULLIF) {
tprintf (ifaceunk, ifname);
return (NULLIF);
}
if (ifp->type != CL_PPP) {
tprintf (notPPP, ifp->name);
return (NULLIF);
}
return (ifp);
}
/****************************************************************************/
int
doppp_commands (int argc, char *argv[], void *p OPTIONAL)
{
register struct iface *ifp;
if (argc < 2) {
tputs (syntaxPPP);
return -1;
}
if ((ifp = ppp_lookup (argv[1])) == NULLIF)
return -1;
if (argc == 2) {
ppp_show (ifp);
return 0;
}
return subcmd (Pppcmds, argc - 1, &argv[1], ifp);
}
/* Close connection on PPP interface */
int
doppp_close (int argc OPTIONAL, char *argv[] OPTIONAL, void *p)
{
register struct fsm_s *fsm_p = p;
fsm_p->flags &= ~(FSM_ACTIVE | FSM_PASSIVE);
fsm_close (fsm_p);
return 0;
}
int
doppp_passive (int argc OPTIONAL, char *argv[] OPTIONAL, void *p)
{
register struct fsm_s *fsm_p = p;
fsm_p->flags &= ~FSM_ACTIVE;
fsm_p->flags |= FSM_PASSIVE;
fsm_start (fsm_p);
return 0;
}
int
doppp_active (int argc OPTIONAL, char *argv[] OPTIONAL, void *p)
{
register struct fsm_s *fsm_p = p;
fsm_p->flags &= ~FSM_PASSIVE;
fsm_p->flags |= FSM_ACTIVE;
if (fsm_p->state < fsmLISTEN)
fsm_p->state = fsmLISTEN;
return 0;
}
static int
doppp_quick (int argc OPTIONAL, char *argv[] OPTIONAL, void *p)
{
register struct iface *ifp = p;
register struct ppp_s *ppp_p = ifp->edv;
struct lcp_s *lcp_p = ppp_p->fsm[Lcp].pdv;
struct ipcp_s *ipcp_p = ppp_p->fsm[IPcp].pdv;
lcp_p->local.want.accm = 0L;
lcp_p->local.want.negotiate |= LCP_N_ACCM;
lcp_p->local.want.magic_number += (uint32) &lcp_p->local.want.magic_number;
lcp_p->local.want.negotiate |= LCP_N_MAGIC;
lcp_p->local.want.negotiate |= LCP_N_ACFC;
lcp_p->local.want.negotiate |= LCP_N_PFC;
ipcp_p->local.want.compression = PPP_COMPR_PROTOCOL;
ipcp_p->local.want.slots = 16;
ipcp_p->local.want.slot_compress = 1;
ipcp_p->local.want.negotiate |= IPCP_N_COMPRESS;
(void) doppp_active (0, NULL, &(ppp_p->fsm[IPcp]));
return 0;
}
/****************************************************************************/
void
ppp_show (struct iface *ifp)
{
register struct ppp_s *ppp_p = ifp->edv;
genstat (ppp_p);
if (ppp_p->fsm[Lcp].pdv != NULL)
lcpstat (&(ppp_p->fsm[Lcp]));
if (ppp_p->fsm[Pap].pdv != NULL)
papstat (&(ppp_p->fsm[Pap]));
if (ppp_p->fsm[IPcp].pdv != NULL)
ipcpstat (&(ppp_p->fsm[IPcp]));
}
static void
genstat (register struct ppp_s *ppp_p)
{
tputs (PPPStatus[ppp_p->phase]);
if (ppp_p->phase == pppREADY)
tprintf (openfor, tformat (secclock () - ppp_p->upsince));
tputc ('\n');
tprintf (stat1, ppp_p->InRxOctetCount, ppp_p->InOpenFlag, ppp_p->InMemory,
ppp_p->InFrame, ppp_p->InChecksum, ppp_p->InError);
tprintf (stat2, ppp_p->InNCP[Lcp], ppp_p->InNCP[Pap],
ppp_p->InNCP[IPcp], ppp_p->InUnknown);
tprintf (stat3, ppp_p->OutTxOctetCount, ppp_p->OutOpenFlag,
ppp_p->OutMemory, ppp_p->OutError);
tprintf (stat4, ppp_p->OutNCP[Lcp], ppp_p->OutNCP[Pap], ppp_p->OutNCP[IPcp]);
}
static int
spot (int16 work, int16 want, int16 will, int16 mask)
{
char blot = ' ';
int result = (work & mask);
if (!(will & mask))
blot = '*';
else if ((want ^ work) & mask)
blot = (result ? '+' : '-');
tputc (uchar (blot));
return result;
}
static void
lcpstat (struct fsm_s *fsm_p)
{
struct lcp_s *lcp_p = fsm_p->pdv;
struct lcp_value_s *localp = &(lcp_p->local.work);
int16 localwork = lcp_p->local.work.negotiate;
int16 localwant = lcp_p->local.want.negotiate;
int16 localwill = lcp_p->local.will_negotiate;
struct lcp_value_s *remotep = &(lcp_p->remote.work);
int16 remotework = lcp_p->remote.work.negotiate;
int16 remotewant = lcp_p->remote.want.negotiate;
int16 remotewill = lcp_p->remote.will_negotiate;
tprintf (LCPstr, NCPStatus[fsm_p->state]);
tputs (header);
/*lint -esym(534,spot) */
spot (localwork, localwant, localwill, LCP_N_MRU);
tprintf (int4str, localp->mru);
spot (localwork, localwant, localwill, LCP_N_ACCM);
tprintf (hexstr, localp->accm, '\t');
if (spot (localwork, localwant, localwill, LCP_N_AUTHENT)) {
switch (localp->authentication) {
case PPP_PAP_PROTOCOL:
tputs (paptab);
break;
default:
tprintf (hexstr2, localp->authentication);
break;
}
} else
tputs (none);
tprintf (spot (localwork, localwant, localwill, LCP_N_PFC) ? yes : no);
tprintf (spot (localwork, localwant, localwill, LCP_N_ACFC) ? yes : no);
spot (localwork, localwant, localwill, LCP_N_MAGIC);
if (localp->magic_number != 0L)
tprintf (hexstr, localp->magic_number, '\n');
else
tputs (unused);
tputs (remotestr);
spot (remotework, remotewant, remotewill, LCP_N_MRU);
tprintf (int4str, remotep->mru);
spot (remotework, remotewant, remotewill, LCP_N_ACCM);
tprintf (hexstr, remotep->accm, '\t');
if (spot (remotework, remotewant, remotewill, LCP_N_AUTHENT)) {
switch (remotep->authentication) {
case PPP_PAP_PROTOCOL:
tputs (paptab);
break;
default:
tprintf (hexstr2, remotep->authentication);
break;
}
} else
tputs (none);
tprintf (spot (remotework, remotewant, remotewill, LCP_N_PFC) ? yes : no);
tprintf (spot (remotework, remotewant, remotewill, LCP_N_ACFC) ? yes : no);
spot (remotework, remotewant, remotewill, LCP_N_MAGIC);
if (remotep->magic_number != 0L)
tprintf (hexstr, remotep->magic_number, '\n');
else
tputs (unused);
}
static void
papstat (struct fsm_s *fsm_p)
{
struct pap_s *pap_p = fsm_p->pdv;
tprintf (PAPstr, NCPStatus[fsm_p->state]);
tprintf (papmessage, (pap_p->message == NULL) ? none2 : pap_p->message);
}
static void
ipcpstat (struct fsm_s *fsm_p)
{
struct ipcp_s *ipcp_p = fsm_p->pdv;
struct ipcp_value_s *localp = &(ipcp_p->local.work);
int16 localwork = ipcp_p->local.work.negotiate;
struct ipcp_value_s *remotep = &(ipcp_p->remote.work);
int16 remotework = ipcp_p->remote.work.negotiate;
tprintf (IPCPstr, NCPStatus[fsm_p->state]);
tprintf (localaddr, inet_ntoa (localp->address));
tprintf (remoteaddr, inet_ntoa (localp->other));
if (localwork & IPCP_N_COMPRESS) {
tprintf (ipcpstatstr, " In", localp->slots, localp->slot_compress);
slhc_i_status (ipcp_p->slhcp);
}
if (remotework & IPCP_N_COMPRESS) {
tprintf (ipcpstatstr, "Out", remotep->slots, remotep->slot_compress);
slhc_o_status (ipcp_p->slhcp);
}
}
/****************************************************************************/
/* Set timeout interval when waiting for response from remote peer */
int
doppp_timeout (int argc, char *argv[], void *p)
{
struct fsm_s *fsm_p = p;
struct timer *t = &(fsm_p->timer);
if (argc < 2)
tprintf (longstr, dur_timer (t) / 1000L);
else {
int x = (int) strtol (argv[1], NULLCHARP, 0);
if (x <= 0) {
tprintf (badval, argv[1], x);
return -1;
} else
set_timer (t, x * 1000L);
}
return 0;
}
int
doppp_try (int argc, char *argv[], void *p)
{
return subcmd (PppTrycmds, argc, argv, p);
}
static int
dotry_nak (int argc, char *argv[], void *p)
{
struct fsm_s *fsm_p = p;
if (argc < 2)
tprintf (intstr, fsm_p->try_nak);
else {
int x = (int) strtol (argv[1], NULLCHARP, 0);
if (x <= 0) {
tprintf (badval, argv[1], x);
return -1;
} else
fsm_p->try_nak = uchar (x);
}
return 0;
}
static int
dotry_req (int argc, char *argv[], void *p)
{
struct fsm_s *fsm_p = p;
if (argc < 2)
tprintf (intstr, fsm_p->try_req);
else {
int x = (int) strtol (argv[1], NULLCHARP, 0);
if (x <= 0) {
tprintf (badval, argv[1], x);
return -1;
} else
fsm_p->try_req = uchar (x);
}
return 0;
}
static int
dotry_terminate (int argc, char *argv[], void *p)
{
struct fsm_s *fsm_p = p;
if (argc < 2)
tprintf (intstr, fsm_p->try_terminate);
else {
int x = (int) strtol (argv[1], NULLCHARP, 0);
if (x <= 0) {
tprintf (badval, argv[1], x);
return -1;
} else
fsm_p->try_terminate = uchar (x);
}
return 0;
}
static int
doppp_trace (int argc, char *argv[], void *p)
{
register struct iface *ifp = p;
register struct ppp_s *ppp_p = ifp->edv;
int tracing = ppp_p->trace;
int result = setint (&tracing, PPPtracing, argc, argv);
ppp_p->trace = uchar (tracing);
return result;
}
#endif /* PPP */