*/
#ifndef lint
-static char rcsid[] = "$Id: main.c,v 1.16 1994/08/25 06:55:21 paulus Exp $";
+static char rcsid[] = "$Id: main.c,v 1.19 1994/09/21 06:47:37 paulus Exp $";
#endif
#include <stdio.h>
#include <sys/socket.h>
#include <net/if.h>
-#include "ppp.h"
#include "pppd.h"
#include "magic.h"
#include "fsm.h"
#define REQ_SYSOPTIONS 1
#endif
-static char *pidpath = _PATH_PIDFILE;
-
/* interface vars */
char ifname[IFNAMSIZ]; /* Interface name */
int ifunit; /* Interface unit number */
int phase; /* where the link is at */
int kill_link;
+int open_ccp_flag;
static int initfdflags = -1; /* Initial file descriptor flags */
-u_char outpacket_buf[MTU+DLLHEADERLEN]; /* buffer for outgoing packet */
-static u_char inpacket_buf[MTU+DLLHEADERLEN]; /* buffer for incoming packet */
+u_char outpacket_buf[PPP_MRU+PPP_HDRLEN]; /* buffer for outgoing packet */
+static u_char inpacket_buf[PPP_MRU+PPP_HDRLEN]; /* buffer for incoming packet */
int hungup; /* terminal has been hung up */
static int n_children; /* # child processes still running */
int baud_rate;
/* prototypes */
-static void hup __ARGS((int));
-static void term __ARGS((int));
-static void chld __ARGS((int));
-static void incdebug __ARGS((int));
-static void nodebug __ARGS((int));
-
-static void get_input __ARGS((void));
-void establish_ppp __ARGS((void));
-void calltimeout __ARGS((void));
-struct timeval *timeleft __ARGS((struct timeval *));
-void reap_kids __ARGS((void));
-void cleanup __ARGS((int, caddr_t));
-void close_fd __ARGS((void));
-void die __ARGS((int));
-void novm __ARGS((char *));
-
-void log_packet __ARGS((u_char *, int, char *));
-void format_packet __ARGS((u_char *, int,
+static void hup __P((int));
+static void term __P((int));
+static void chld __P((int));
+static void toggle_debug __P((int));
+static void open_ccp __P((int));
+
+static void get_input __P((void));
+void establish_ppp __P((void));
+void calltimeout __P((void));
+struct timeval *timeleft __P((struct timeval *));
+void reap_kids __P((void));
+void cleanup __P((int, caddr_t));
+void close_fd __P((void));
+void die __P((int));
+void novm __P((char *));
+
+void log_packet __P((u_char *, int, char *));
+void format_packet __P((u_char *, int,
void (*) (void *, char *, ...), void *));
-void pr_log __ARGS((void *, char *, ...));
+void pr_log __P((void *, char *, ...));
-extern char *ttyname __ARGS((int));
-extern char *getlogin __ARGS((void));
+extern char *ttyname __P((int));
+extern char *getlogin __P((void));
/*
* PPP Data Link Layer "protocol" table.
void (*datainput)();
char *name;
} prottbl[] = {
- { LCP, lcp_init, lcp_input, lcp_protrej, lcp_printpkt, NULL, "LCP" },
- { IPCP, ipcp_init, ipcp_input, ipcp_protrej, ipcp_printpkt, NULL, "IPCP" },
- { UPAP, upap_init, upap_input, upap_protrej, upap_printpkt, NULL, "PAP" },
- { CHAP, ChapInit, ChapInput, ChapProtocolReject, ChapPrintPkt, NULL, "CHAP" },
- { CCP, ccp_init, ccp_input, ccp_protrej, ccp_printpkt, ccp_datainput, "CCP" },
+ { PPP_LCP, lcp_init, lcp_input, lcp_protrej,
+ lcp_printpkt, NULL, "LCP" },
+ { PPP_IPCP, ipcp_init, ipcp_input, ipcp_protrej,
+ ipcp_printpkt, NULL, "IPCP" },
+ { PPP_PAP, upap_init, upap_input, upap_protrej,
+ upap_printpkt, NULL, "PAP" },
+ { PPP_CHAP, ChapInit, ChapInput, ChapProtocolReject,
+ ChapPrintPkt, NULL, "CHAP" },
+ { PPP_CCP, ccp_init, ccp_input, ccp_protrej,
+ ccp_printpkt, ccp_datainput, "CCP" },
};
#define N_PROTO (sizeof(prottbl) / sizeof(prottbl[0]))
int argc;
char *argv[];
{
- int mask, i, nonblock;
+ int i, nonblock;
struct sigaction sa;
struct cmd *cmdp;
FILE *pidfile;
char *p;
struct passwd *pw;
struct timeval timo;
+ sigset_t mask;
p = ttyname(0);
if (p)
SIGNAL(SIGTERM, term); /* Terminate */
SIGNAL(SIGCHLD, chld);
- signal(SIGUSR1, incdebug); /* Increment debug flag */
- signal(SIGUSR2, nodebug); /* Reset debug flag */
+ signal(SIGUSR1, toggle_debug); /* Toggle debug flag */
+ signal(SIGUSR2, open_ccp); /* Reopen CCP */
/*
* Lock the device if we've been asked to.
(void) sprintf(ifname, "ppp%d", ifunit);
/* write pid to file */
- (void) sprintf(pidfilename, "%s/%s.pid", pidpath, ifname);
+ (void) sprintf(pidfilename, "%s%s.pid", _PATH_VARRUN, ifname);
if ((pidfile = fopen(pidfilename, "w")) != NULL) {
fprintf(pidfile, "%d\n", pid);
(void) fclose(pidfile);
lcp_close(0);
kill_link = 0;
}
+ if (open_ccp_flag) {
+ if (phase == PHASE_NETWORK) {
+ ccp_fsm[0].flags = OPT_RESTART; /* clears OPT_SILENT */
+ ccp_open(0);
+ }
+ open_ccp_flag = 0;
+ }
get_input();
reap_kids(); /* Don't leave dead kids lying around */
}
if (debug /*&& (debugflags & DBG_INPACKET)*/)
log_packet(p, len, "rcvd ");
- if (len < DLLHEADERLEN) {
+ if (len < PPP_HDRLEN) {
MAINDEBUG((LOG_INFO, "io(): Received short packet."));
return;
}
p += 2; /* Skip address and control */
GETSHORT(protocol, p);
- len -= DLLHEADERLEN;
+ len -= PPP_HDRLEN;
/*
* Toss all non-LCP packets unless LCP is OPEN.
*/
- if (protocol != LCP && lcp_fsm[0].state != OPENED) {
+ if (protocol != PPP_LCP && lcp_fsm[0].state != OPENED) {
MAINDEBUG((LOG_INFO,
"io(): Received non-LCP packet when LCP not open."));
return;
if (i == sizeof (prottbl) / sizeof (struct protent)) {
if (debug)
- syslog(LOG_WARNING, "Unknown protocol (%x) received",
+ syslog(LOG_WARNING, "Unknown protocol (0x%x) received",
protocol);
- lcp_sprotrej(0, p - DLLHEADERLEN, len + DLLHEADERLEN);
+ lcp_sprotrej(0, p - PPP_HDRLEN, len + PPP_HDRLEN);
}
}
}
/*
- * incdebug - Catch SIGUSR1 signal.
+ * toggle_debug - Catch SIGUSR1 signal.
*
- * Increment debug flag.
+ * Toggle debug flag.
*/
/*ARGSUSED*/
static void
-incdebug(sig)
+toggle_debug(sig)
int sig;
{
- debug++;
+ debug = !debug;
note_debug_level();
}
/*
- * nodebug - Catch SIGUSR2 signal.
+ * open_ccp - Catch SIGUSR2 signal.
*
- * Turn off debugging.
+ * Try to (re)negotiate compression.
*/
/*ARGSUSED*/
static void
-nodebug(sig)
+open_ccp(sig)
int sig;
{
- debug = 0;
- note_debug_level();
+ open_ccp_flag = 1;
}
format_packet(p, len, printer, arg)
u_char *p;
int len;
- void (*printer) __ARGS((void *, char *, ...));
+ void (*printer) __P((void *, char *, ...));
void *arg;
{
int i, n;
u_short proto;
u_char x;
- if (len >= DLLHEADERLEN && p[0] == ALLSTATIONS && p[1] == UI) {
+ if (len >= PPP_HDRLEN && p[0] == PPP_ALLSTATIONS && p[1] == PPP_UI) {
p += 2;
GETSHORT(proto, p);
- len -= DLLHEADERLEN;
+ len -= PPP_HDRLEN;
for (i = 0; i < N_PROTO; ++i)
if (proto == prottbl[i].protocol)
break;
print_string(p, len, printer, arg)
char *p;
int len;
- void (*printer) __ARGS((void *, char *, ...));
+ void (*printer) __P((void *, char *, ...));
void *arg;
{
int c;