* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
-#define RCSID "$Id: main.c,v 1.89 2000/01/18 19:49:52 masputra 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"
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 *));
/*
* 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) {
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;
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;
}
/*
- * 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;
goto disconnect;
}
- if (!demand) {
+ if (!demand && ifunit >= 0) {
info("Using interface ppp%d", ifunit);
slprintf(ifname, sizeof(ifname), "ppp%d", ifunit);
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