* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
-#define RCSID "$Id: main.c,v 1.87 1999/11/15 03:55:37 paulus Exp $"
+#define RCSID "$Id: main.c,v 1.91 2000/03/27 06:03:01 paulus Exp $"
#include <stdio.h>
#include <ctype.h>
#include <sys/stat.h>
#include <sys/socket.h>
#include <netinet/in.h>
+#include <arpa/inet.h>
#include "pppd.h"
#include "magic.h"
int devnam_fixed; /* set while in options.ttyxx file */
volatile int status; /* exit status for pppd */
int unsuccess; /* # unsuccessful connection attempts */
+int do_callback; /* != 0 if we should do callback next */
+int doing_callback; /* != 0 if we are doing callback */
+char *callback_script; /* script for doing callback */
+
int (*holdoff_hook) __P((void)) = NULL;
int (*new_phase_hook) __P((int)) = NULL;
static int device_script __P((char *, int, int, int));
static int reap_kids __P((int waitfor));
static void record_child __P((int, char *, void (*) (void *), void *));
+static int open_socket __P((char *));
static int start_charshunt __P((int, int));
static void charshunt_done __P((void *));
static void charshunt __P((int, int, char *));
{
int i, fdflags, t;
struct sigaction sa;
- char *p;
+ char *p, *connector;
struct passwd *pw;
struct timeval timo;
sigset_t mask;
/*
* Work out the device name, if it hasn't already been specified.
*/
- using_pty = notty || ptycommand != NULL;
+ using_pty = notty || ptycommand != NULL || pty_socket != NULL;
if (!using_pty && default_device) {
char *p;
if (!isatty(0) || (p = ttyname(0)) == NULL) {
/*
* Parse the tty options file and the command line.
* The per-tty options file should not change
- * ptycommand, notty or devnam.
+ * ptycommand, pty_socket, notty or devnam.
*/
devnam_fixed = 1;
if (!using_pty) {
for (i = 0; (protp = protocols[i]) != NULL; ++i)
if (protp->check_options != NULL)
(*protp->check_options)();
- if (demand && connector == 0) {
+ if (demand && connect_script == 0) {
option_error("connect script is required for demand-dialling\n");
exit(EXIT_OPTION_ERROR);
}
/* default holdoff to 0 if no connect script has been given */
- if (connector == 0 && !holdoff_specified)
+ if (connect_script == 0 && !holdoff_specified)
holdoff = 0;
if (using_pty) {
option_error("pty option is incompatible with notty option");
exit(EXIT_OPTION_ERROR);
}
+ if (pty_socket != NULL && (ptycommand != NULL || notty)) {
+ option_error("socket option is incompatible with pty and notty");
+ exit(EXIT_OPTION_ERROR);
+ }
default_device = notty;
lockflag = 0;
modem = 0;
demand_conf();
}
+ do_callback = 0;
for (;;) {
need_holdoff = 1;
real_ttyfd = -1;
status = EXIT_OK;
++unsuccess;
+ doing_callback = do_callback;
+ do_callback = 0;
- if (demand) {
+ if (demand && !doing_callback) {
/*
* Don't do anything until we see some activity.
*/
new_phase(PHASE_SERIALCONN);
/*
- * Get a pty master/slave pair if the pty, notty, or record
- * options were specified.
+ * Get a pty master/slave pair if the pty, notty, socket,
+ * or record options were specified.
*/
strlcpy(ppp_devnam, devnam, sizeof(ppp_devnam));
pty_master = -1;
pty_slave = -1;
- if (ptycommand != NULL || notty || record_file != NULL) {
+ if (using_pty || record_file != NULL) {
if (!get_pty(&pty_master, &pty_slave, ppp_devnam, uid)) {
error("Couldn't allocate pseudo-tty");
status = EXIT_FATAL_ERROR;
*/
hungup = 0;
kill_link = 0;
+ connector = doing_callback? callback_script: connect_script;
if (devnam[0] != 0) {
for (;;) {
/* If the user specified the device name, become the
}
/*
- * If the notty and/or record option was specified,
+ * If the pty, socket, notty and/or record option was specified,
* start up the character shunt now.
*/
status = EXIT_PTYCMD_FAILED;
close(pty_master);
pty_master = -1;
}
+ } else if (pty_socket != NULL) {
+ int fd = open_socket(pty_socket);
+ if (fd < 0)
+ goto fail;
+ if (!start_charshunt(fd, fd))
+ goto fail;
} else if (notty) {
if (!start_charshunt(0, 1))
goto fail;
/* run connection script */
if ((connector && connector[0]) || initializer) {
if (real_ttyfd != -1) {
+ /* XXX do this if doing_callback == CALLBACK_DIALIN? */
if (!default_device && modem) {
setdtr(real_ttyfd, 0); /* in case modem is off hook */
sleep(1);
clear CLOCAL if modem option */
if (real_ttyfd != -1)
set_up_tty(real_ttyfd, 0);
+
+ if (doing_callback == CALLBACK_DIALIN)
+ connector = NULL;
}
/* reopen tty if necessary to wait for carrier */
goto disconnect;
}
- if (!demand) {
+ if (!demand && ifunit >= 0) {
info("Using interface ppp%d", ifunit);
slprintf(ifname, sizeof(ifname), "ppp%d", ifunit);
* time for something from the peer. This can avoid bouncing
* our packets off his tty before he has it set up.
*/
- if (connector != NULL || ptycommand != NULL) {
+ add_fd(fd_ppp);
+ if (connect_delay != 0 && (connector != NULL || ptycommand != NULL)) {
struct timeval t;
- t.tv_sec = 1;
- t.tv_usec = 0;
+ t.tv_sec = connect_delay / 1000;
+ t.tv_usec = connect_delay % 1000;
wait_input(&t);
}
lcp_open(0); /* Start protocol */
open_ccp_flag = 0;
- add_fd(fd_ppp);
status = EXIT_NEGOTIATION_FAILED;
new_phase(PHASE_ESTABLISH);
while (phase != PHASE_DEAD) {
* XXX we may not be able to do this if the line has hung up!
*/
disconnect:
- if (disconnector && !hungup) {
+ if (disconnect_script && !hungup) {
new_phase(PHASE_DISCONNECT);
if (real_ttyfd >= 0)
set_up_tty(real_ttyfd, 1);
- if (device_script(disconnector, ttyfd, ttyfd, 0) < 0) {
+ if (device_script(disconnect_script, ttyfd, ttyfd, 0) < 0) {
warn("disconnect script failed");
} else {
info("Serial link disconnected.");
new_phase(PHASE_DORMANT);
}
+/* List of protocol names, to make our messages a little more informative. */
+struct protocol_list {
+ u_short proto;
+ const char *name;
+} protocol_list[] = {
+ { 0x21, "IP" },
+ { 0x23, "OSI Network Layer" },
+ { 0x25, "Xerox NS IDP" },
+ { 0x27, "DECnet Phase IV" },
+ { 0x29, "Appletalk" },
+ { 0x2b, "Novell IPX" },
+ { 0x2d, "VJ compressed TCP/IP" },
+ { 0x2f, "VJ uncompressed TCP/IP" },
+ { 0x31, "Bridging PDU" },
+ { 0x33, "Stream Protocol ST-II" },
+ { 0x35, "Banyan Vines" },
+ { 0x39, "AppleTalk EDDP" },
+ { 0x3b, "AppleTalk SmartBuffered" },
+ { 0x3d, "Multi-Link" },
+ { 0x3f, "NETBIOS Framing" },
+ { 0x41, "Cisco Systems" },
+ { 0x43, "Ascom Timeplex" },
+ { 0x45, "Fujitsu Link Backup and Load Balancing (LBLB)" },
+ { 0x47, "DCA Remote Lan" },
+ { 0x49, "Serial Data Transport Protocol (PPP-SDTP)" },
+ { 0x4b, "SNA over 802.2" },
+ { 0x4d, "SNA" },
+ { 0x4f, "IP6 Header Compression" },
+ { 0x6f, "Stampede Bridging" },
+ { 0xfb, "single-link compression" },
+ { 0xfd, "1st choice compression" },
+ { 0x0201, "802.1d Hello Packets" },
+ { 0x0203, "IBM Source Routing BPDU" },
+ { 0x0205, "DEC LANBridge100 Spanning Tree" },
+ { 0x0231, "Luxcom" },
+ { 0x0233, "Sigma Network Systems" },
+ { 0x8021, "Internet Protocol Control Protocol" },
+ { 0x8023, "OSI Network Layer Control Protocol" },
+ { 0x8025, "Xerox NS IDP Control Protocol" },
+ { 0x8027, "DECnet Phase IV Control Protocol" },
+ { 0x8029, "Appletalk Control Protocol" },
+ { 0x802b, "Novell IPX Control Protocol" },
+ { 0x8031, "Bridging NCP" },
+ { 0x8033, "Stream Protocol Control Protocol" },
+ { 0x8035, "Banyan Vines Control Protocol" },
+ { 0x803d, "Multi-Link Control Protocol" },
+ { 0x803f, "NETBIOS Framing Control Protocol" },
+ { 0x8041, "Cisco Systems Control Protocol" },
+ { 0x8043, "Ascom Timeplex" },
+ { 0x8045, "Fujitsu LBLB Control Protocol" },
+ { 0x8047, "DCA Remote Lan Network Control Protocol (RLNCP)" },
+ { 0x8049, "Serial Data Control Protocol (PPP-SDCP)" },
+ { 0x804b, "SNA over 802.2 Control Protocol" },
+ { 0x804d, "SNA Control Protocol" },
+ { 0x804f, "IP6 Header Compression Control Protocol" },
+ { 0x006f, "Stampede Bridging Control Protocol" },
+ { 0x80fb, "Single Link Compression Control Protocol" },
+ { 0x80fd, "Compression Control Protocol" },
+ { 0xc021, "Link Control Protocol" },
+ { 0xc023, "Password Authentication Protocol" },
+ { 0xc025, "Link Quality Report" },
+ { 0xc027, "Shiva Password Authentication Protocol" },
+ { 0xc029, "CallBack Control Protocol (CBCP)" },
+ { 0xc081, "Container Control Protocol" },
+ { 0xc223, "Challenge Handshake Authentication Protocol" },
+ { 0xc281, "Proprietary Authentication Protocol" },
+ { 0, NULL },
+};
+
+/*
+ * protocol_name - find a name for a PPP protocol.
+ */
+const char *
+protocol_name(proto)
+ int proto;
+{
+ struct protocol_list *lp;
+
+ for (lp = protocol_list; lp->proto != 0; ++lp)
+ if (proto == lp->proto)
+ return lp->name;
+ return NULL;
+}
+
/*
* get_input - called when incoming data is available.
*/
}
}
- if (debug)
- warn("Unsupported protocol (0x%x) received", protocol);
+ if (debug) {
+ const char *pname = protocol_name(protocol);
+ if (pname != NULL)
+ warn("Unsupported protocol '%s' (0x%x) received", pname, protocol);
+ else
+ warn("Unsupported protocol 0x%x received", protocol);
+ }
lcp_sprotrej(0, p - PPP_HDRLEN, len + PPP_HDRLEN);
}
return 0;
while ((pid = waitpid(-1, &status, (waitfor? 0: WNOHANG))) != -1
&& pid != 0) {
- --n_children;
for (prevp = &children; (chp = *prevp) != NULL; prevp = &chp->next) {
if (chp->pid == pid) {
+ --n_children;
*prevp = chp->next;
break;
}
}
}
+/*
+ * open_socket - establish a stream socket connection to the nominated
+ * host and port.
+ */
+static int
+open_socket(dest)
+ char *dest;
+{
+ char *sep, *endp = NULL;
+ int sock, port = -1;
+ u_int32_t host;
+ struct hostent *hent;
+ struct sockaddr_in sad;
+
+ /* parse host:port and resolve host to an IP address */
+ sep = strchr(dest, ':');
+ if (sep != NULL)
+ port = strtol(sep+1, &endp, 10);
+ if (port < 0 || endp == sep+1 || sep == dest) {
+ error("Can't parse host:port for socket destination");
+ return -1;
+ }
+ *sep = 0;
+ host = inet_addr(dest);
+ if (host == (u_int32_t) -1) {
+ hent = gethostbyname(dest);
+ if (hent == NULL) {
+ error("%s: unknown host in socket option", dest);
+ *sep = ':';
+ return -1;
+ }
+ host = *(u_int32_t *)(hent->h_addr_list[0]);
+ }
+ *sep = ':';
+
+ /* get a socket and connect it to the other end */
+ sock = socket(PF_INET, SOCK_STREAM, 0);
+ if (sock < 0) {
+ error("Can't create socket: %m");
+ return -1;
+ }
+ memset(&sad, 0, sizeof(sad));
+ sad.sin_family = AF_INET;
+ sad.sin_port = htons(port);
+ sad.sin_addr.s_addr = host;
+ if (connect(sock, &sad, sizeof(sad)) < 0) {
+ error("Can't connect to %s: %m", dest);
+ close(sock);
+ return -1;
+ }
+
+ return sock;
+}
+
/*
* start_charshunt - create a child process to run the character shunt.
*/
int pty_readable, stdin_readable;
struct timeval lasttime;
FILE *recordf = NULL;
+ int ilevel, olevel, max_level;
+ struct timeval levelt, tout, *top;
/*
* Reset signal handlers.
nibuf = nobuf = 0;
ibufp = obufp = NULL;
pty_readable = stdin_readable = 1;
+
+ ilevel = olevel = 0;
+ gettimeofday(&levelt, NULL);
+ if (max_data_rate) {
+ max_level = max_data_rate / 10;
+ if (max_level < 100)
+ max_level = 100;
+ } else
+ max_level = sizeof(inpacket_buf) + 1;
+
nfds = (ofd > pty_master? ofd: pty_master) + 1;
if (recordf != NULL) {
gettimeofday(&lasttime, NULL);
}
while (nibuf != 0 || nobuf != 0 || pty_readable || stdin_readable) {
+ top = 0;
+ tout.tv_sec = 0;
+ tout.tv_usec = 10000;
FD_ZERO(&ready);
FD_ZERO(&writey);
- if (nibuf != 0)
- FD_SET(pty_master, &writey);
- else if (stdin_readable)
+ if (nibuf != 0) {
+ if (ilevel >= max_level)
+ top = &tout;
+ else
+ FD_SET(pty_master, &writey);
+ } else if (stdin_readable)
FD_SET(ifd, &ready);
- if (nobuf != 0)
- FD_SET(ofd, &writey);
- else if (pty_readable)
+ if (nobuf != 0) {
+ if (olevel >= max_level)
+ top = &tout;
+ else
+ FD_SET(ofd, &writey);
+ } else if (pty_readable)
FD_SET(pty_master, &ready);
- if (select(nfds, &ready, &writey, NULL, NULL) < 0) {
+ if (select(nfds, &ready, &writey, NULL, top) < 0) {
if (errno != EINTR)
fatal("select");
continue;
}
+ if (max_data_rate) {
+ double dt;
+ int nbt;
+ struct timeval now;
+
+ gettimeofday(&now, NULL);
+ dt = (now.tv_sec - levelt.tv_sec
+ + (now.tv_usec - levelt.tv_usec) / 1e6);
+ nbt = (int)(dt * max_data_rate);
+ ilevel = (nbt < 0 || nbt > ilevel)? 0: ilevel - nbt;
+ olevel = (nbt < 0 || nbt > olevel)? 0: olevel - nbt;
+ levelt = now;
+ } else
+ ilevel = olevel = 0;
if (FD_ISSET(ifd, &ready)) {
ibufp = inpacket_buf;
nibuf = read(ifd, ibufp, sizeof(inpacket_buf));
}
}
if (FD_ISSET(ofd, &writey)) {
- n = write(ofd, obufp, nobuf);
+ n = nobuf;
+ if (olevel + n > max_level)
+ n = max_level - olevel;
+ n = write(ofd, obufp, n);
if (n < 0) {
if (errno != EIO) {
error("Error writing standard output: %m");
} else {
obufp += n;
nobuf -= n;
+ olevel += n;
}
}
if (FD_ISSET(pty_master, &writey)) {
- n = write(pty_master, ibufp, nibuf);
+ n = nibuf;
+ if (ilevel + n > max_level)
+ n = max_level - ilevel;
+ n = write(pty_master, ibufp, n);
if (n < 0) {
if (errno != EIO) {
error("Error writing pseudo-tty master: %m");
} else {
ibufp += n;
nibuf -= n;
+ ilevel += n;
}
}
}
projects / ppp.git / blobdiff