* sys-linux.c - System-dependent procedures for setting up
* PPP interfaces on Linux systems
*
- * Copyright (c) 1989 Carnegie Mellon University.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms are permitted
- * provided that the above copyright notice and this paragraph are
- * duplicated in all such forms and that any documentation,
- * advertising materials, and other materials related to such
- * distribution and use acknowledge that the software was developed
- * by Carnegie Mellon University. The name of the
- * University may not be used to endorse or promote products derived
- * from this software without specific prior written permission.
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
- * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
- */
-
-/*
- * TODO:
+ * Copyright (c) 1994-2004 Paul Mackerras. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * 2. The name(s) of the authors of this software must not be used to
+ * endorse or promote products derived from this software without
+ * prior written permission.
+ *
+ * 3. Redistributions of any form whatsoever must retain the following
+ * acknowledgment:
+ * "This product includes software developed by Paul Mackerras
+ * <paulus@samba.org>".
+ *
+ * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO
+ * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
+ * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
+ * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Derived from main.c and pppd.h, which are:
+ *
+ * Copyright (c) 1984-2000 Carnegie Mellon University. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * 3. The name "Carnegie Mellon University" must not be used to
+ * endorse or promote products derived from this software without
+ * prior written permission. For permission or any legal
+ * details, please contact
+ * Office of Technology Transfer
+ * Carnegie Mellon University
+ * 5000 Forbes Avenue
+ * Pittsburgh, PA 15213-3890
+ * (412) 268-4387, fax: (412) 268-7395
+ * tech-transfer@andrew.cmu.edu
+ *
+ * 4. Redistributions of any form whatsoever must retain the following
+ * acknowledgment:
+ * "This product includes software developed by Computing Services
+ * at Carnegie Mellon University (http://www.cmu.edu/computing/)."
+ *
+ * CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO
+ * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE
+ * FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
+ * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <sys/errno.h>
+#include <sys/file.h>
+#include <sys/stat.h>
+#include <sys/utsname.h>
+#include <sys/sysmacros.h>
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include <fcntl.h>
#include <ctype.h>
+#include <termios.h>
+#include <unistd.h>
+/* This is in netdevice.h. However, this compile will fail miserably if
+ you attempt to include netdevice.h because it has so many references
+ to __memcpy functions which it should not attempt to do. So, since I
+ really don't use it, but it must be defined, define it now. */
+
+#ifndef MAX_ADDR_LEN
+#define MAX_ADDR_LEN 7
+#endif
+
+#if __GLIBC__ >= 2
+#include <asm/types.h> /* glibc 2 conflicts with linux/types.h */
#include <net/if.h>
-#include <net/ppp_defs.h>
#include <net/if_arp.h>
-#include <net/if_ppp.h>
#include <net/route.h>
+#include <netinet/if_ether.h>
+#else
+#include <linux/types.h>
+#include <linux/if.h>
+#include <linux/if_arp.h>
+#include <linux/route.h>
#include <linux/if_ether.h>
+#endif
#include <netinet/in.h>
+#include <arpa/inet.h>
+
+#include <linux/ppp_defs.h>
+#include <linux/if_ppp.h>
#include "pppd.h"
#include "fsm.h"
#include "ipcp.h"
-static int initdisc = -1; /* Initial TTY discipline */
+#ifdef IPX_CHANGE
+#include "ipxcp.h"
+#if __GLIBC__ >= 2 && \
+ !(defined(__powerpc__) && __GLIBC__ == 2 && __GLIBC_MINOR__ == 0)
+#include <netipx/ipx.h>
+#else
+#include <linux/ipx.h>
+#endif
+#endif /* IPX_CHANGE */
+
+#ifdef PPP_FILTER
+#include <pcap-bpf.h>
+#include <linux/filter.h>
+#endif /* PPP_FILTER */
+
+#ifdef LOCKLIB
+#include <sys/locks.h>
+#endif
+
+#ifdef INET6
+#ifndef _LINUX_IN6_H
+/*
+ * This is in linux/include/net/ipv6.h.
+ */
+
+struct in6_ifreq {
+ struct in6_addr ifr6_addr;
+ __u32 ifr6_prefixlen;
+ unsigned int ifr6_ifindex;
+};
+#endif
+
+#define IN6_LLADDR_FROM_EUI64(sin6, eui64) do { \
+ memset(&sin6.s6_addr, 0, sizeof(struct in6_addr)); \
+ sin6.s6_addr16[0] = htons(0xfe80); \
+ eui64_copy(eui64, sin6.s6_addr32[2]); \
+ } while (0)
+
+#endif /* INET6 */
+
+/* We can get an EIO error on an ioctl if the modem has hung up */
+#define ok_error(num) ((num)==EIO)
+
+static int tty_disc = N_TTY; /* The TTY discipline */
+static int ppp_disc = N_PPP; /* The PPP discpline */
static int initfdflags = -1; /* Initial file descriptor flags for fd */
-static int prev_kdebugflag = 0;
-static int has_default_route = 0;
+static int ppp_fd = -1; /* fd which is set to PPP discipline */
+static int sock_fd = -1; /* socket for doing interface ioctls */
+static int slave_fd = -1;
+static int master_fd = -1;
+#ifdef INET6
+static int sock6_fd = -1;
+#endif /* INET6 */
+
+/*
+ * For the old-style kernel driver, this is the same as ppp_fd.
+ * For the new-style driver, it is the fd of an instance of /dev/ppp
+ * which is attached to the ppp unit and is used for controlling it.
+ */
+int ppp_dev_fd = -1; /* fd for /dev/ppp (new style driver) */
+
+static int chindex; /* channel index (new style driver) */
+
+static fd_set in_fds; /* set of fds that wait_input waits for */
+static int max_in_fd; /* highest fd set in in_fds */
+
static int has_proxy_arp = 0;
static int driver_version = 0;
static int driver_modification = 0;
static int driver_patch = 0;
+static int driver_is_old = 0;
static int restore_term = 0; /* 1 => we've munged the terminal */
static struct termios inittermios; /* Initial TTY termios */
-static int sockfd; /* socket for doing interface ioctls */
+int new_style_driver = 0;
+
+static char loop_name[20];
+static unsigned char inbuf[512]; /* buffer for chars read from loopback */
static int if_is_up; /* Interface has been marked up */
static u_int32_t default_route_gateway; /* Gateway for default route added */
static u_int32_t proxy_arp_addr; /* Addr for proxy arp entry added */
+static char proxy_arp_dev[16]; /* Device for proxy arp entry */
+static u_int32_t our_old_addr; /* for detecting address changes */
+static int dynaddr_set; /* 1 if ip_dynaddr set */
+static int looped; /* 1 if using loop */
+static int link_mtu; /* mtu for the link (not bundle) */
-static char *lock_file;
+static struct utsname utsname; /* for the kernel version */
+static int kernel_version;
+#define KVERSION(j,n,p) ((j)*1000000 + (n)*1000 + (p))
#define MAX_IFS 100
#define FLAGS_MASK (IFF_UP | IFF_BROADCAST | \
IFF_POINTOPOINT | IFF_LOOPBACK | IFF_NOARP)
+#define SIN_ADDR(x) (((struct sockaddr_in *) (&(x)))->sin_addr.s_addr)
+
/* Prototypes for procedures local to this file. */
-static int get_flags (void);
-static void set_flags (int flags);
+static int modify_flags(int fd, int clear_bits, int set_bits);
static int translate_speed (int bps);
static int baud_rate_of (int speed);
-static char *path_to_route (void);
static void close_route_table (void);
static int open_route_table (void);
static int read_route_table (struct rtentry *rt);
-static int defaultroute_exists (void);
-static int get_ether_addr (u_int32_t ipaddr, struct sockaddr *hwaddr);
+static int defaultroute_exists (struct rtentry *rt);
+static int get_ether_addr (u_int32_t ipaddr, struct sockaddr *hwaddr,
+ char *name, int namelen);
static void decode_version (char *buf, int *version, int *mod, int *patch);
+static int set_kdebugflag(int level);
+static int ppp_registered(void);
+static int make_ppp_unit(void);
+extern u_char inpacket_buf[]; /* borrowed from main.c */
/*
* SET_SA_FAMILY - set the sa_family field of a struct sockaddr,
*/
extern int hungup;
-#define still_ppp() (hungup == 0)
-/*
- * Functions to read and set the flags value in the device driver
- */
+/* new_fd is the fd of a tty */
+static void set_ppp_fd (int new_fd)
+{
+ SYSDEBUG ((LOG_DEBUG, "setting ppp_fd to %d\n", new_fd));
+ ppp_fd = new_fd;
+ if (!new_style_driver)
+ ppp_dev_fd = new_fd;
+}
-static int get_flags (void)
- {
- int flags;
+static int still_ppp(void)
+{
+ if (new_style_driver)
+ return !hungup && ppp_fd >= 0;
+ if (!hungup || ppp_fd == slave_fd)
+ return 1;
+ if (slave_fd >= 0) {
+ set_ppp_fd(slave_fd);
+ return 1;
+ }
+ return 0;
+}
- if (ioctl(ttyfd, PPPIOCGFLAGS, (caddr_t) &flags) < 0)
- {
- syslog(LOG_ERR, "ioctl(PPPIOCGFLAGS): %m");
- quit();
- }
+/*
+ * modify_flags - set and clear flag bits controlling the kernel
+ * PPP driver.
+ */
+static int modify_flags(int fd, int clear_bits, int set_bits)
+{
+ int flags;
- MAINDEBUG ((LOG_DEBUG, "get flags = %x\n", flags));
- return flags;
- }
+ if (ioctl(fd, PPPIOCGFLAGS, &flags) == -1)
+ goto err;
+ flags = (flags & ~clear_bits) | set_bits;
+ if (ioctl(fd, PPPIOCSFLAGS, &flags) == -1)
+ goto err;
-static void set_flags (int flags)
- {
- MAINDEBUG ((LOG_DEBUG, "set flags = %x\n", flags));
+ return 0;
- if (ioctl(ttyfd, PPPIOCSFLAGS, (caddr_t) &flags) < 0)
- {
- syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS, %x): %m", flags);
- quit();
- }
- }
+ err:
+ if (errno != EIO)
+ error("Failed to set PPP kernel option flags: %m");
+ return -1;
+}
-/*
+/********************************************************************
+ *
* sys_init - System-dependent initialization.
*/
void sys_init(void)
- {
- openlog("pppd", LOG_PID | LOG_NDELAY, LOG_PPP);
- setlogmask(LOG_UPTO(LOG_INFO));
- if (debug)
- {
- setlogmask(LOG_UPTO(LOG_DEBUG));
- }
-
+{
/* Get an internet socket for doing socket ioctls. */
- sockfd = socket(AF_INET, SOCK_DGRAM, 0);
- if (sockfd < 0)
- {
- syslog(LOG_ERR, "Couldn't create IP socket: %m");
- die(1);
- }
- }
+ sock_fd = socket(AF_INET, SOCK_DGRAM, 0);
+ if (sock_fd < 0)
+ fatal("Couldn't create IP socket: %m(%d)", errno);
+
+#ifdef INET6
+ sock6_fd = socket(AF_INET6, SOCK_DGRAM, 0);
+ if (sock6_fd < 0)
+ sock6_fd = -errno; /* save errno for later */
+#endif
-/*
+ FD_ZERO(&in_fds);
+ max_in_fd = 0;
+}
+
+/********************************************************************
+ *
* sys_cleanup - restore any system state we modified before exiting:
* mark the interface down, delete default route and/or proxy arp entry.
- * This should call die() because it's called from die().
+ * This shouldn't call die() because it's called from die().
*/
-void sys_cleanup()
-{
- struct ifreq ifr;
- if (if_is_up)
+void sys_cleanup(void)
+{
+/*
+ * Take down the device
+ */
+ if (if_is_up) {
+ if_is_up = 0;
sifdown(0);
- /* XXX maybe we need to delete the route through the interface */
- if (has_default_route)
- cifdefaultroute(0, default_route_gateway);
+ }
+/*
+ * Delete any routes through the device.
+ */
+ if (default_route_gateway != 0)
+ cifdefaultroute(0, 0, default_route_gateway);
+
if (has_proxy_arp)
cifproxyarp(0, proxy_arp_addr);
}
-/*
- * note_debug_level - note a change in the debug level.
+/********************************************************************
+ *
+ * sys_close - Clean up in a child process before execing.
*/
+void
+sys_close(void)
+{
+ if (new_style_driver && ppp_dev_fd >= 0)
+ close(ppp_dev_fd);
+ if (sock_fd >= 0)
+ close(sock_fd);
+#ifdef INET6
+ if (sock6_fd >= 0)
+ close(sock6_fd);
+#endif
+ if (slave_fd >= 0)
+ close(slave_fd);
+ if (master_fd >= 0)
+ close(master_fd);
+}
-void note_debug_level (void)
- {
- if (debug)
- {
- MAINDEBUG ((LOG_INFO, "Debug turned ON, Level %d", debug));
- setlogmask(LOG_UPTO(LOG_DEBUG));
- }
- else
- {
- setlogmask(LOG_UPTO(LOG_WARNING));
- }
- }
-
-/*
+/********************************************************************
+ *
* set_kdebugflag - Define the debugging level for the kernel
*/
-int set_kdebugflag (int requested_level)
- {
- if (ioctl(ttyfd, PPPIOCGDEBUG, &prev_kdebugflag) < 0)
- {
- syslog(LOG_ERR, "ioctl(PPPIOCGDEBUG): %m");
+static int set_kdebugflag (int requested_level)
+{
+ if (ppp_dev_fd < 0)
+ return 1;
+ if (ioctl(ppp_dev_fd, PPPIOCSDEBUG, &requested_level) < 0) {
+ if ( ! ok_error (errno) )
+ error("ioctl(PPPIOCSDEBUG): %m (line %d)", __LINE__);
return (0);
- }
-
- if (prev_kdebugflag != requested_level)
- {
- if (ioctl(ttyfd, PPPIOCSDEBUG, &requested_level) < 0)
- {
- syslog (LOG_ERR, "ioctl(PPPIOCSDEBUG): %m");
- return (0);
- }
- MAINDEBUG ((LOG_INFO, "set kernel debugging level to %d",
- requested_level));
- }
+ }
+ SYSDEBUG ((LOG_INFO, "set kernel debugging level to %d",
+ requested_level));
return (1);
- }
+}
+
+/********************************************************************
+ *
+ * tty_establish_ppp - Turn the serial port into a ppp interface.
+ */
+
+int tty_establish_ppp (int tty_fd)
+{
+ int ret_fd;
/*
- * establish_ppp - Turn the serial port into a ppp interface.
- */
-
-void establish_ppp (int fd)
- {
- int pppdisc = N_PPP;
- int sig = SIGIO;
-
- if (ioctl(fd, TIOCEXCL, 0) < 0)
- {
- syslog (LOG_WARNING, "ioctl(TIOCEXCL): %m");
- }
-
- if (ioctl(fd, TIOCGETD, &initdisc) < 0)
- {
- syslog(LOG_ERR, "ioctl(TIOCGETD): %m");
- die (1);
- }
-
- if (ioctl(fd, TIOCSETD, &pppdisc) < 0)
- {
- syslog(LOG_ERR, "ioctl(TIOCSETD): %m");
- die (1);
- }
-
- if (ioctl(fd, PPPIOCGUNIT, &ifunit) < 0)
- {
- syslog(LOG_ERR, "ioctl(PPPIOCGUNIT): %m");
- die (1);
- }
-
- set_kdebugflag (kdebugflag);
+ * Ensure that the tty device is in exclusive mode.
+ */
+ if (ioctl(tty_fd, TIOCEXCL, 0) < 0) {
+ if ( ! ok_error ( errno ))
+ warn("Couldn't make tty exclusive: %m");
+ }
+/*
+ * Demand mode - prime the old ppp device to relinquish the unit.
+ */
+ if (!new_style_driver && looped
+ && ioctl(slave_fd, PPPIOCXFERUNIT, 0) < 0) {
+ error("ioctl(transfer ppp unit): %m, line %d", __LINE__);
+ return -1;
+ }
+/*
+ * Set the current tty to the PPP discpline
+ */
- set_flags (get_flags() & ~(SC_RCV_B7_0 | SC_RCV_B7_1 |
- SC_RCV_EVNP | SC_RCV_ODDP));
+#ifndef N_SYNC_PPP
+#define N_SYNC_PPP 14
+#endif
+ ppp_disc = (new_style_driver && sync_serial)? N_SYNC_PPP: N_PPP;
+ if (ioctl(tty_fd, TIOCSETD, &ppp_disc) < 0) {
+ if ( ! ok_error (errno) ) {
+ error("Couldn't set tty to PPP discipline: %m");
+ return -1;
+ }
+ }
- MAINDEBUG ((LOG_NOTICE, "Using version %d.%d.%d of PPP driver",
- driver_version, driver_modification, driver_patch));
+ ret_fd = generic_establish_ppp(tty_fd);
+
+#define SC_RCVB (SC_RCV_B7_0 | SC_RCV_B7_1 | SC_RCV_EVNP | SC_RCV_ODDP)
+#define SC_LOGB (SC_DEBUG | SC_LOG_INPKT | SC_LOG_OUTPKT | SC_LOG_RAWIN \
+ | SC_LOG_FLUSH)
+
+ if (ret_fd >= 0) {
+ modify_flags(ppp_fd, SC_RCVB | SC_LOGB,
+ (kdebugflag * SC_DEBUG) & SC_LOGB);
+ } else {
+ if (ioctl(tty_fd, TIOCSETD, &tty_disc) < 0 && !ok_error(errno))
+ warn("Couldn't reset tty to normal line discipline: %m");
+ }
+
+ return ret_fd;
+}
+
+/********************************************************************
+ *
+ * generic_establish_ppp - Turn the fd into a ppp interface.
+ */
+int generic_establish_ppp (int fd)
+{
+ int x;
+
+ if (new_style_driver) {
+ int flags;
+
+ /* Open an instance of /dev/ppp and connect the channel to it */
+ if (ioctl(fd, PPPIOCGCHAN, &chindex) == -1) {
+ error("Couldn't get channel number: %m");
+ goto err;
+ }
+ dbglog("using channel %d", chindex);
+ fd = open("/dev/ppp", O_RDWR);
+ if (fd < 0) {
+ error("Couldn't reopen /dev/ppp: %m");
+ goto err;
+ }
+ (void) fcntl(fd, F_SETFD, FD_CLOEXEC);
+ if (ioctl(fd, PPPIOCATTCHAN, &chindex) < 0) {
+ error("Couldn't attach to channel %d: %m", chindex);
+ goto err_close;
+ }
+ flags = fcntl(fd, F_GETFL);
+ if (flags == -1 || fcntl(fd, F_SETFL, flags | O_NONBLOCK) == -1)
+ warn("Couldn't set /dev/ppp (channel) to nonblock: %m");
+ set_ppp_fd(fd);
+
+ if (!looped)
+ ifunit = -1;
+ if (!looped && !multilink) {
+ /*
+ * Create a new PPP unit.
+ */
+ if (make_ppp_unit() < 0)
+ goto err_close;
+ }
+
+ if (looped)
+ modify_flags(ppp_dev_fd, SC_LOOP_TRAFFIC, 0);
+
+ if (!multilink) {
+ add_fd(ppp_dev_fd);
+ if (ioctl(fd, PPPIOCCONNECT, &ifunit) < 0) {
+ error("Couldn't attach to PPP unit %d: %m", ifunit);
+ goto err_close;
+ }
+ }
+
+ } else {
+ /*
+ * Old-style driver: find out which interface we were given.
+ */
+ set_ppp_fd (fd);
+ if (ioctl(fd, PPPIOCGUNIT, &x) < 0) {
+ if (ok_error (errno))
+ goto err;
+ fatal("ioctl(PPPIOCGUNIT): %m (line %d)", __LINE__);
+ }
+ /* Check that we got the same unit again. */
+ if (looped && x != ifunit)
+ fatal("transfer_ppp failed: wanted unit %d, got %d", ifunit, x);
+ ifunit = x;
+
+ /*
+ * Fetch the initial file flags and reset blocking mode on the file.
+ */
+ initfdflags = fcntl(fd, F_GETFL);
+ if (initfdflags == -1 ||
+ fcntl(fd, F_SETFL, initfdflags | O_NONBLOCK) == -1) {
+ if ( ! ok_error (errno))
+ warn("Couldn't set device to non-blocking mode: %m");
+ }
+ }
/*
- * Set device for non-blocking reads.
+ * Enable debug in the driver if requested.
*/
- if ((initfdflags = fcntl(fd, F_GETFL)) == -1
- || fcntl(fd, F_SETFL, initfdflags | O_NONBLOCK) == -1) {
- {
- syslog(LOG_WARNING, "Couldn't set device to non-blocking mode: %m");
- }
- }
+ if (!looped)
+ set_kdebugflag (kdebugflag);
-/*
- * disestablish_ppp - Restore the serial port to normal operation.
+ looped = 0;
+
+ SYSDEBUG ((LOG_NOTICE, "Using version %d.%d.%d of PPP driver",
+ driver_version, driver_modification, driver_patch));
+
+ return ppp_fd;
+
+ err_close:
+ close(fd);
+ err:
+ return -1;
+}
+
+/********************************************************************
+ *
+ * tty_disestablish_ppp - Restore the serial port to normal operation.
* This shouldn't call die() because it's called from die().
*/
-void disestablish_ppp(int fd)
- {
- int x;
- char *s;
-
- /* Reset non-blocking mode on the file descriptor. */
- if (initfdflags != -1 && fcntl(fd, F_SETFL, initfdflags) < 0)
- syslog(LOG_WARNING, "Couldn't restore device fd flags: %m");
+void tty_disestablish_ppp(int tty_fd)
+{
+ if (!hungup) {
+/*
+ * Flush the tty output buffer so that the TIOCSETD doesn't hang.
+ */
+ if (tcflush(tty_fd, TCIOFLUSH) < 0)
+ {
+ warn("tcflush failed: %m");
+ goto flushfailed;
+ }
+/*
+ * Restore the previous line discipline
+ */
+ if (ioctl(tty_fd, TIOCSETD, &tty_disc) < 0) {
+ if ( ! ok_error (errno))
+ error("ioctl(TIOCSETD, N_TTY): %m (line %d)", __LINE__);
+ }
+
+ if (ioctl(tty_fd, TIOCNXCL, 0) < 0) {
+ if ( ! ok_error (errno))
+ warn("ioctl(TIOCNXCL): %m (line %d)", __LINE__);
+ }
+
+ /* Reset non-blocking mode on fd. */
+ if (initfdflags != -1 && fcntl(tty_fd, F_SETFL, initfdflags) < 0) {
+ if ( ! ok_error (errno))
+ warn("Couldn't restore device fd flags: %m");
+ }
+ }
+flushfailed:
initfdflags = -1;
- if (still_ppp() && initdisc >= 0)
- {
- set_kdebugflag (prev_kdebugflag);
-
- if (ioctl(fd, TIOCSETD, &initdisc) < 0)
- {
- syslog(LOG_WARNING, "ioctl(TIOCSETD): %m");
- }
-
- if (ioctl(fd, TIOCNXCL, 0) < 0)
- {
- syslog (LOG_WARNING, "ioctl(TIOCNXCL): %m");
- }
- }
- initdisc = -1;
- }
+ generic_disestablish_ppp(tty_fd);
+}
+
+/********************************************************************
+ *
+ * generic_disestablish_ppp - Restore device components to normal
+ * operation, and reconnect the ppp unit to the loopback if in demand
+ * mode. This shouldn't call die() because it's called from die().
+ */
+void generic_disestablish_ppp(int dev_fd)
+{
+ if (new_style_driver) {
+ close(ppp_fd);
+ ppp_fd = -1;
+ if (demand) {
+ modify_flags(ppp_dev_fd, 0, SC_LOOP_TRAFFIC);
+ looped = 1;
+ } else if (ppp_dev_fd >= 0) {
+ close(ppp_dev_fd);
+ remove_fd(ppp_dev_fd);
+ ppp_dev_fd = -1;
+ }
+ } else {
+ /* old-style driver */
+ if (demand)
+ set_ppp_fd(slave_fd);
+ else
+ ppp_dev_fd = -1;
+ }
+}
+
+/*
+ * make_ppp_unit - make a new ppp unit for ppp_dev_fd.
+ * Assumes new_style_driver.
+ */
+static int make_ppp_unit()
+{
+ int x, flags;
+
+ if (ppp_dev_fd >= 0) {
+ dbglog("in make_ppp_unit, already had /dev/ppp open?");
+ close(ppp_dev_fd);
+ }
+ ppp_dev_fd = open("/dev/ppp", O_RDWR);
+ if (ppp_dev_fd < 0)
+ fatal("Couldn't open /dev/ppp: %m");
+ flags = fcntl(ppp_dev_fd, F_GETFL);
+ if (flags == -1
+ || fcntl(ppp_dev_fd, F_SETFL, flags | O_NONBLOCK) == -1)
+ warn("Couldn't set /dev/ppp to nonblock: %m");
+
+ ifunit = req_unit;
+ x = ioctl(ppp_dev_fd, PPPIOCNEWUNIT, &ifunit);
+ if (x < 0 && req_unit >= 0 && errno == EEXIST) {
+ warn("Couldn't allocate PPP unit %d as it is already in use", req_unit);
+ ifunit = -1;
+ x = ioctl(ppp_dev_fd, PPPIOCNEWUNIT, &ifunit);
+ }
+ if (x < 0)
+ error("Couldn't create new ppp unit: %m");
+ return x;
+}
+
+/*
+ * cfg_bundle - configure the existing bundle.
+ * Used in demand mode.
+ */
+void cfg_bundle(int mrru, int mtru, int rssn, int tssn)
+{
+ if (!new_style_driver)
+ return;
+
+ /* set the mrru, mtu and flags */
+ if (ioctl(ppp_dev_fd, PPPIOCSMRRU, &mrru) < 0)
+ error("Couldn't set MRRU: %m");
+
+ modify_flags(ppp_dev_fd, SC_MP_SHORTSEQ|SC_MP_XSHORTSEQ|SC_MULTILINK,
+ ((rssn? SC_MP_SHORTSEQ: 0) | (tssn? SC_MP_XSHORTSEQ: 0)
+ | (mrru? SC_MULTILINK: 0)));
+
+ /* connect up the channel */
+ if (ioctl(ppp_fd, PPPIOCCONNECT, &ifunit) < 0)
+ fatal("Couldn't attach to PPP unit %d: %m", ifunit);
+ add_fd(ppp_dev_fd);
+}
+
+/*
+ * make_new_bundle - create a new PPP unit (i.e. a bundle)
+ * and connect our channel to it. This should only get called
+ * if `multilink' was set at the time establish_ppp was called.
+ * In demand mode this uses our existing bundle instead of making
+ * a new one.
+ */
+void make_new_bundle(int mrru, int mtru, int rssn, int tssn)
+{
+ if (!new_style_driver)
+ return;
+
+ /* make us a ppp unit */
+ if (make_ppp_unit() < 0)
+ die(1);
+
+ /* set the mrru and flags */
+ cfg_bundle(mrru, mtru, rssn, tssn);
+}
/*
+ * bundle_attach - attach our link to a given PPP unit.
+ * We assume the unit is controlled by another pppd.
+ */
+int bundle_attach(int ifnum)
+{
+ int master_fd;
+
+ if (!new_style_driver)
+ return -1;
+
+ master_fd = open("/dev/ppp", O_RDWR);
+ if (master_fd < 0)
+ fatal("Couldn't open /dev/ppp: %m");
+ if (ioctl(master_fd, PPPIOCATTACH, &ifnum) < 0) {
+ if (errno == ENXIO) {
+ close(master_fd);
+ return 0; /* doesn't still exist */
+ }
+ fatal("Couldn't attach to interface unit %d: %m\n", ifnum);
+ }
+ if (ioctl(ppp_fd, PPPIOCCONNECT, &ifnum) < 0)
+ fatal("Couldn't connect to interface unit %d: %m", ifnum);
+ modify_flags(master_fd, 0, SC_MULTILINK);
+ close(master_fd);
+
+ ifunit = ifnum;
+ return 1;
+}
+
+/********************************************************************
+ *
* clean_check - Fetch the flags for the device and generate
* appropriate error messages.
*/
void clean_check(void)
- {
- if (still_ppp() && initdisc >= 0)
- {
- if (ioctl(ttyfd, PPPIOCGFLAGS, (caddr_t) &x) == 0)
- {
+{
+ int x;
+ char *s;
+
+ if (still_ppp()) {
+ if (ioctl(ppp_fd, PPPIOCGFLAGS, (caddr_t) &x) == 0) {
s = NULL;
- switch (~x & (SC_RCV_B7_0|SC_RCV_B7_1|SC_RCV_EVNP|SC_RCV_ODDP))
- {
- case SC_RCV_B7_0 | SC_RCV_B7_1 | SC_RCV_EVNP | SC_RCV_ODDP:
- s = "nothing was received";
- break;
-
- case SC_RCV_B7_0:
- case SC_RCV_B7_0 | SC_RCV_EVNP:
- case SC_RCV_B7_0 | SC_RCV_ODDP:
- case SC_RCV_B7_0 | SC_RCV_ODDP | SC_RCV_EVNP:
+ switch (~x & (SC_RCV_B7_0|SC_RCV_B7_1|SC_RCV_EVNP|SC_RCV_ODDP)) {
+ case SC_RCV_B7_0:
s = "all had bit 7 set to 1";
break;
-
- case SC_RCV_B7_1:
- case SC_RCV_B7_1 | SC_RCV_EVNP:
- case SC_RCV_B7_1 | SC_RCV_ODDP:
- case SC_RCV_B7_1 | SC_RCV_ODDP | SC_RCV_EVNP:
+
+ case SC_RCV_B7_1:
s = "all had bit 7 set to 0";
break;
-
- case SC_RCV_EVNP:
+
+ case SC_RCV_EVNP:
s = "all had odd parity";
break;
-
- case SC_RCV_ODDP:
+
+ case SC_RCV_ODDP:
s = "all had even parity";
break;
- }
-
- if (s != NULL)
- {
- syslog(LOG_WARNING, "Receive serial link is not"
- " 8-bit clean:");
- syslog(LOG_WARNING, "Problem: %s", s);
- }
- }
- }
- }
-
+ }
+
+ if (s != NULL) {
+ warn("Receive serial link is not 8-bit clean:");
+ warn("Problem: %s", s);
+ }
+ }
+ }
+}
+
/*
* List of valid speeds.
#ifdef B38400
{ 38400, B38400 },
#endif
+#ifdef B57600
+ { 57600, B57600 },
+#endif
+#ifdef B76800
+ { 76800, B76800 },
+#endif
+#ifdef B115200
+ { 115200, B115200 },
+#endif
#ifdef EXTA
{ 19200, EXTA },
#endif
#ifdef EXTB
{ 38400, EXTB },
#endif
-#ifdef B57600
- { 57600, B57600 },
+#ifdef B230400
+ { 230400, B230400 },
#endif
-#ifdef B115200
- { 115200, B115200 },
+#ifdef B460800
+ { 460800, B460800 },
+#endif
+#ifdef B921600
+ { 921600, B921600 },
#endif
{ 0, 0 }
};
-/*
+/********************************************************************
+ *
* Translate from bits/second to a speed_t.
*/
static int translate_speed (int bps)
- {
+{
struct speed *speedp;
- if (bps != 0)
- {
- for (speedp = speeds; speedp->speed_int; speedp++)
- {
+ if (bps != 0) {
+ for (speedp = speeds; speedp->speed_int; speedp++) {
if (bps == speedp->speed_int)
- {
return speedp->speed_val;
- }
- }
- syslog(LOG_WARNING, "speed %d not supported", bps);
- }
+ }
+ warn("speed %d not supported", bps);
+ }
return 0;
- }
+}
-/*
+/********************************************************************
+ *
* Translate from a speed_t to bits/second.
*/
static int baud_rate_of (int speed)
- {
+{
struct speed *speedp;
-
- if (speed != 0)
- {
- for (speedp = speeds; speedp->speed_int; speedp++)
- {
+
+ if (speed != 0) {
+ for (speedp = speeds; speedp->speed_int; speedp++) {
if (speed == speedp->speed_val)
- {
return speedp->speed_int;
- }
- }
- }
+ }
+ }
return 0;
- }
+}
-/*
+/********************************************************************
+ *
* set_up_tty: Set up the serial port on `fd' for 8 bits, no parity,
* at the requested speed, etc. If `local' is true, set CLOCAL
* regardless of whether the modem option was specified.
*/
-void set_up_tty (int fd, int local)
- {
- int speed, x;
+void set_up_tty(int tty_fd, int local)
+{
+ int speed;
struct termios tios;
-
- if (tcgetattr(fd, &tios) < 0)
- {
- syslog(LOG_ERR, "tcgetattr: %m");
- die(1);
- }
-
+
+ setdtr(tty_fd, 1);
+ if (tcgetattr(tty_fd, &tios) < 0) {
+ if (!ok_error(errno))
+ fatal("tcgetattr: %m (line %d)", __LINE__);
+ return;
+ }
+
if (!restore_term)
- {
inittermios = tios;
- }
-
+
tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB | CLOCAL);
tios.c_cflag |= CS8 | CREAD | HUPCL;
tios.c_lflag = 0;
tios.c_cc[VMIN] = 1;
tios.c_cc[VTIME] = 0;
-
+
if (local || !modem)
- {
tios.c_cflag ^= (CLOCAL | HUPCL);
- }
- switch (crtscts)
- {
+ switch (crtscts) {
case 1:
tios.c_cflag |= CRTSCTS;
break;
default:
break;
- }
-
+ }
+
speed = translate_speed(inspeed);
- if (speed)
- {
+ if (speed) {
cfsetospeed (&tios, speed);
cfsetispeed (&tios, speed);
- }
+ }
/*
* We can't proceed if the serial port speed is B0,
* since that implies that the serial port is disabled.
*/
- else
- {
+ else {
speed = cfgetospeed(&tios);
if (speed == B0)
- {
- syslog(LOG_ERR, "Baud rate for %s is 0; need explicit baud rate",
- devnam);
- die (1);
- }
- }
-
- if (tcsetattr(fd, TCSAFLUSH, &tios) < 0)
- {
- syslog(LOG_ERR, "tcsetattr: %m");
- die(1);
- }
-
+ fatal("Baud rate for %s is 0; need explicit baud rate", devnam);
+ }
+
+ while (tcsetattr(tty_fd, TCSAFLUSH, &tios) < 0 && !ok_error(errno))
+ if (errno != EINTR)
+ fatal("tcsetattr: %m (line %d)", __LINE__);
+
baud_rate = baud_rate_of(speed);
- restore_term = TRUE;
- }
+ restore_term = 1;
+}
-/*
+/********************************************************************
+ *
* setdtr - control the DTR line on the serial port.
* This is called from die(), so it shouldn't call die().
*/
-void setdtr (int fd, int on)
- {
+void setdtr (int tty_fd, int on)
+{
int modembits = TIOCM_DTR;
- ioctl(fd, (on ? TIOCMBIS : TIOCMBIC), &modembits);
- }
+ ioctl(tty_fd, (on ? TIOCMBIS : TIOCMBIC), &modembits);
+}
-/*
+/********************************************************************
+ *
* restore_tty - restore the terminal to the saved settings.
*/
-void restore_tty (int fd)
- {
- if (restore_term)
- {
+void restore_tty (int tty_fd)
+{
+ if (restore_term) {
restore_term = 0;
/*
* Turn off echoing, because otherwise we can get into
* when we close it, it will revert to its defaults anyway.
*/
if (!default_device)
- {
inittermios.c_lflag &= ~(ECHO | ECHONL);
- }
-
- if (tcsetattr(fd, TCSAFLUSH, &inittermios) < 0)
- {
- if (errno != EIO)
- {
- syslog(LOG_WARNING, "tcsetattr: %m");
- }
- }
- }
- }
-/*
+ if (tcsetattr(tty_fd, TCSAFLUSH, &inittermios) < 0) {
+ if (! ok_error (errno))
+ warn("tcsetattr: %m (line %d)", __LINE__);
+ }
+ }
+}
+
+/********************************************************************
+ *
* output - Output PPP packet.
*/
void output (int unit, unsigned char *p, int len)
- {
- if (debug)
- {
- log_packet(p, len, "sent ");
- }
-
- if (write(ttyfd, p, len) < 0)
- {
- if (errno == EWOULDBLOCK || errno == ENOBUFS
- || errno == ENXIO || errno == EIO)
- {
- syslog(LOG_WARNING, "write: warning: %m");
- }
+{
+ int fd = ppp_fd;
+ int proto;
+
+ dump_packet("sent", p, len);
+ if (snoop_send_hook) snoop_send_hook(p, len);
+
+ if (len < PPP_HDRLEN)
+ return;
+ if (new_style_driver) {
+ p += 2;
+ len -= 2;
+ proto = (p[0] << 8) + p[1];
+ if (ppp_dev_fd >= 0 && !(proto >= 0xc000 || proto == PPP_CCPFRAG))
+ fd = ppp_dev_fd;
+ }
+ if (write(fd, p, len) < 0) {
+ if (errno == EWOULDBLOCK || errno == EAGAIN || errno == ENOBUFS
+ || errno == ENXIO || errno == EIO || errno == EINTR)
+ warn("write: warning: %m (%d)", errno);
else
- {
- syslog(LOG_ERR, "write: %m");
- die(1);
- }
- }
- }
+ error("write: %m (%d)", errno);
+ }
+}
-/*
- * wait_input - wait until there is data available on ttyfd,
+/********************************************************************
+ *
+ * wait_input - wait until there is data available,
* for the length of time specified by *timo (indefinite
* if timo is NULL).
*/
-void wait_input (struct timeval *timo)
- {
- fd_set ready;
+void wait_input(struct timeval *timo)
+{
+ fd_set ready, exc;
int n;
-
- FD_ZERO(&ready);
- FD_SET(ttyfd, &ready);
- n = select(ttyfd+1, &ready, NULL, &ready, timo);
+ ready = in_fds;
+ exc = in_fds;
+ n = select(max_in_fd + 1, &ready, NULL, &exc, timo);
if (n < 0 && errno != EINTR)
- {
- syslog(LOG_ERR, "select: %m");
- die(1);
- }
- }
+ fatal("select: %m");
+}
/*
- * read_packet - get a PPP packet from the serial device.
+ * add_fd - add an fd to the set that wait_input waits for.
*/
-
-int read_packet (unsigned char *buf)
- {
- int len;
-
- len = read(ttyfd, buf, PPP_MTU + PPP_HDRLEN);
- if (len < 0)
- {
- if (errno == EWOULDBLOCK)
- {
- return -1;
- }
- syslog(LOG_ERR, "read: %m");
- die(1);
- }
- return len;
- }
+void add_fd(int fd)
+{
+ if (fd >= FD_SETSIZE)
+ fatal("internal error: file descriptor too large (%d)", fd);
+ FD_SET(fd, &in_fds);
+ if (fd > max_in_fd)
+ max_in_fd = fd;
+}
/*
- * ppp_send_config - configure the transmit characteristics of
- * the ppp interface.
+ * remove_fd - remove an fd from the set that wait_input waits for.
*/
+void remove_fd(int fd)
+{
+ FD_CLR(fd, &in_fds);
+}
-void ppp_send_config (int unit,int mtu,u_int32_t asyncmap,int pcomp,int accomp)
- {
- u_int x;
- struct ifreq ifr;
-
- MAINDEBUG ((LOG_DEBUG, "send_config: mtu = %d\n", mtu));
-/*
- * Ensure that the link is still up.
- */
- if (still_ppp())
- {
-/*
- * Set the MTU and other parameters for the ppp device
+
+/********************************************************************
+ *
+ * read_packet - get a PPP packet from the serial device.
*/
- memset (&ifr, '\0', sizeof (ifr));
- strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
- ifr.ifr_mtu = mtu;
-
- if (ioctl(sockfd, SIOCSIFMTU, (caddr_t) &ifr) < 0)
- {
- syslog(LOG_ERR, "ioctl(SIOCSIFMTU): %m");
- quit();
- }
-
- MAINDEBUG ((LOG_DEBUG, "send_config: asyncmap = %lx\n", asyncmap));
- if (ioctl(ttyfd, PPPIOCSASYNCMAP, (caddr_t) &asyncmap) < 0)
- {
- syslog(LOG_ERR, "ioctl(PPPIOCSASYNCMAP): %m");
- quit();
- }
-
- x = get_flags();
- x = pcomp ? x | SC_COMP_PROT : x & ~SC_COMP_PROT;
- x = accomp ? x | SC_COMP_AC : x & ~SC_COMP_AC;
- set_flags(x);
- }
- }
-/*
- * ppp_set_xaccm - set the extended transmit ACCM for the interface.
+int read_packet (unsigned char *buf)
+{
+ int len, nr;
+
+ len = PPP_MRU + PPP_HDRLEN;
+ if (new_style_driver) {
+ *buf++ = PPP_ALLSTATIONS;
+ *buf++ = PPP_UI;
+ len -= 2;
+ }
+ nr = -1;
+ if (ppp_fd >= 0) {
+ nr = read(ppp_fd, buf, len);
+ if (nr < 0 && errno != EWOULDBLOCK && errno != EAGAIN
+ && errno != EIO && errno != EINTR)
+ error("read: %m");
+ if (nr < 0 && errno == ENXIO)
+ return 0;
+ }
+ if (nr < 0 && new_style_driver && ppp_dev_fd >= 0) {
+ /* N.B. we read ppp_fd first since LCP packets come in there. */
+ nr = read(ppp_dev_fd, buf, len);
+ if (nr < 0 && errno != EWOULDBLOCK && errno != EAGAIN
+ && errno != EIO && errno != EINTR)
+ error("read /dev/ppp: %m");
+ if (nr < 0 && errno == ENXIO)
+ return 0;
+ }
+ return (new_style_driver && nr > 0)? nr+2: nr;
+}
+
+/********************************************************************
+ *
+ * get_loop_output - get outgoing packets from the ppp device,
+ * and detect when we want to bring the real link up.
+ * Return value is 1 if we need to bring up the link, 0 otherwise.
*/
+int
+get_loop_output(void)
+{
+ int rv = 0;
+ int n;
-void ppp_set_xaccm (int unit, ext_accm accm)
- {
- MAINDEBUG ((LOG_DEBUG, "set_xaccm: %08lx %08lx %08lx %08lx\n",
- accm[0], accm[1], accm[2], accm[3]));
+ if (new_style_driver) {
+ while ((n = read_packet(inpacket_buf)) > 0)
+ if (loop_frame(inpacket_buf, n))
+ rv = 1;
+ return rv;
+ }
- if (ioctl(ttyfd, PPPIOCSXASYNCMAP, accm) < 0 && errno != ENOTTY)
- {
- syslog(LOG_WARNING, "ioctl(set extended ACCM): %m");
- }
- }
+ while ((n = read(master_fd, inbuf, sizeof(inbuf))) > 0)
+ if (loop_chars(inbuf, n))
+ rv = 1;
-/*
- * ppp_recv_config - configure the receive-side characteristics of
- * the ppp interface.
- */
+ if (n == 0)
+ fatal("eof on loopback");
+
+ if (errno != EWOULDBLOCK && errno != EAGAIN)
+ fatal("read from loopback: %m(%d)", errno);
-void ppp_recv_config (int unit,int mru,u_int32_t asyncmap,int pcomp,int accomp)
- {
- u_int x;
+ return rv;
+}
- MAINDEBUG ((LOG_DEBUG, "recv_config: mru = %d\n", mru));
/*
- * If we were called because the link has gone down then there is nothing
- * which may be done. Just return without incident.
+ * netif_set_mtu - set the MTU on the PPP network interface.
*/
- if (!still_ppp())
- {
- return;
- }
+void
+netif_set_mtu(int unit, int mtu)
+{
+ struct ifreq ifr;
+
+ SYSDEBUG ((LOG_DEBUG, "netif_set_mtu: mtu = %d\n", mtu));
+
+ memset (&ifr, '\0', sizeof (ifr));
+ strlcpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
+ ifr.ifr_mtu = mtu;
+
+ if (ifunit >= 0 && ioctl(sock_fd, SIOCSIFMTU, (caddr_t) &ifr) < 0)
+ error("ioctl(SIOCSIFMTU): %m (line %d)", __LINE__);
+}
+
/*
- * Set the receiver parameters
+ * netif_get_mtu - get the MTU on the PPP network interface.
+ */
+int
+netif_get_mtu(int unit)
+{
+ struct ifreq ifr;
+
+ memset (&ifr, '\0', sizeof (ifr));
+ strlcpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
+
+ if (ifunit >= 0 && ioctl(sock_fd, SIOCGIFMTU, (caddr_t) &ifr) < 0) {
+ error("ioctl(SIOCGIFMTU): %m (line %d)", __LINE__);
+ return 0;
+ }
+ return ifr.ifr_mtu;
+}
+
+/********************************************************************
+ *
+ * tty_send_config - configure the transmit characteristics of
+ * the ppp interface.
*/
- if (ioctl(ttyfd, PPPIOCSMRU, (caddr_t) &mru) < 0)
- {
- syslog(LOG_ERR, "ioctl(PPPIOCSMRU): %m");
- }
- MAINDEBUG ((LOG_DEBUG, "recv_config: asyncmap = %lx\n", asyncmap));
- if (ioctl(ttyfd, PPPIOCSRASYNCMAP, (caddr_t) &asyncmap) < 0)
- {
- syslog(LOG_ERR, "ioctl(PPPIOCSRASYNCMAP): %m");
- quit();
- }
+void tty_send_config(int mtu, u_int32_t asyncmap, int pcomp, int accomp)
+{
+ int x;
+
+ if (!still_ppp())
+ return;
+ link_mtu = mtu;
+ if (ioctl(ppp_fd, PPPIOCSASYNCMAP, (caddr_t) &asyncmap) < 0) {
+ if (errno != EIO && errno != ENOTTY)
+ error("Couldn't set transmit async character map: %m");
+ ++error_count;
+ return;
+ }
+
+ x = (pcomp? SC_COMP_PROT: 0) | (accomp? SC_COMP_AC: 0)
+ | (sync_serial? SC_SYNC: 0);
+ modify_flags(ppp_fd, SC_COMP_PROT|SC_COMP_AC|SC_SYNC, x);
+}
+
+/********************************************************************
+ *
+ * tty_set_xaccm - set the extended transmit ACCM for the interface.
+ */
+
+void tty_set_xaccm (ext_accm accm)
+{
+ SYSDEBUG ((LOG_DEBUG, "set_xaccm: %08lx %08lx %08lx %08lx\n",
+ accm[0], accm[1], accm[2], accm[3]));
+
+ if (!still_ppp())
+ return;
+ if (ioctl(ppp_fd, PPPIOCSXASYNCMAP, accm) < 0 && errno != ENOTTY) {
+ if ( ! ok_error (errno))
+ warn("ioctl(set extended ACCM): %m (line %d)", __LINE__);
+ }
+}
- x = get_flags();
- x = !accomp? x | SC_REJ_COMP_AC: x &~ SC_REJ_COMP_AC;
- set_flags (x);
- }
+/********************************************************************
+ *
+ * tty_recv_config - configure the receive-side characteristics of
+ * the ppp interface.
+ */
+void tty_recv_config(int mru, u_int32_t asyncmap, int pcomp, int accomp)
+{
/*
+ * If we were called because the link has gone down then there is nothing
+ * which may be done. Just return without incident.
+ */
+ if (!still_ppp())
+ return;
+/*
+ * Set the receiver parameters
+ */
+ if (ioctl(ppp_fd, PPPIOCSMRU, (caddr_t) &mru) < 0) {
+ if (errno != EIO && errno != ENOTTY)
+ error("Couldn't set channel receive MRU: %m");
+ }
+ if (new_style_driver && ppp_dev_fd >= 0
+ && ioctl(ppp_dev_fd, PPPIOCSMRU, (caddr_t) &mru) < 0)
+ error("Couldn't set MRU in generic PPP layer: %m");
+
+ if (ioctl(ppp_fd, PPPIOCSRASYNCMAP, (caddr_t) &asyncmap) < 0) {
+ if (errno != EIO && errno != ENOTTY)
+ error("Couldn't set channel receive asyncmap: %m");
+ }
+}
+
+/********************************************************************
+ *
* ccp_test - ask kernel whether a given compression method
* is acceptable for use.
*/
-int ccp_test (int unit, u_char *opt_ptr, int opt_len, int for_transmit)
- {
+int
+ccp_test(int unit, u_char *opt_ptr, int opt_len, int for_transmit)
+{
struct ppp_option_data data;
memset (&data, '\0', sizeof (data));
data.length = opt_len;
data.transmit = for_transmit;
- if (ioctl(ttyfd, PPPIOCSCOMPRESS, (caddr_t) &data) >= 0)
- {
+ if (ioctl(ppp_dev_fd, PPPIOCSCOMPRESS, (caddr_t) &data) >= 0)
return 1;
- }
return (errno == ENOBUFS)? 0: -1;
- }
+}
-/*
+/********************************************************************
+ *
* ccp_flags_set - inform kernel about the current state of CCP.
*/
void ccp_flags_set (int unit, int isopen, int isup)
- {
- if (still_ppp())
- {
- int x = get_flags();
- x = isopen? x | SC_CCP_OPEN : x &~ SC_CCP_OPEN;
- x = isup? x | SC_CCP_UP : x &~ SC_CCP_UP;
- set_flags (x);
- }
- }
-
-/*
- * ccp_fatal_error - returns 1 if decompression was disabled as a
- * result of an error detected after decompression of a packet,
- * 0 otherwise. This is necessary because of patent nonsense.
- */
-
-int ccp_fatal_error (int unit)
- {
- int x = get_flags();
+{
+ int x;
- return x & SC_DC_FERROR;
- }
+ x = (isopen? SC_CCP_OPEN: 0) | (isup? SC_CCP_UP: 0);
+ if (still_ppp() && ppp_dev_fd >= 0)
+ modify_flags(ppp_dev_fd, SC_CCP_OPEN|SC_CCP_UP, x);
+}
+#ifdef PPP_FILTER
/*
- * sifvjcomp - config tcp header compression
+ * set_filters - set the active and pass filters in the kernel driver.
*/
+int set_filters(struct bpf_program *pass, struct bpf_program *active)
+{
+ struct sock_fprog fp;
+
+ fp.len = pass->bf_len;
+ fp.filter = (struct sock_filter *) pass->bf_insns;
+ if (ioctl(ppp_dev_fd, PPPIOCSPASS, &fp) < 0) {
+ if (errno == ENOTTY)
+ warn("kernel does not support PPP filtering");
+ else
+ error("Couldn't set pass-filter in kernel: %m");
+ return 0;
+ }
+ fp.len = active->bf_len;
+ fp.filter = (struct sock_filter *) active->bf_insns;
+ if (ioctl(ppp_dev_fd, PPPIOCSACTIVE, &fp) < 0) {
+ error("Couldn't set active-filter in kernel: %m");
+ return 0;
+ }
+ return 1;
+}
+#endif /* PPP_FILTER */
-int sifvjcomp (int u, int vjcomp, int cidcomp, int maxcid)
- {
- u_int x = get_flags();
-
- if (vjcomp)
- {
- if (ioctl (ttyfd, PPPIOCSMAXCID, (caddr_t) &maxcid) < 0)
- {
- syslog (LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
- vjcomp = 0;
- }
- }
-
- x = vjcomp ? x | SC_COMP_TCP : x &~ SC_COMP_TCP;
- x = cidcomp ? x & ~SC_NO_TCP_CCID : x | SC_NO_TCP_CCID;
- set_flags (x);
-
- return 1;
- }
-
-/*
- * sifup - Config the interface up and enable IP packets to pass.
+/********************************************************************
+ *
+ * get_idle_time - return how long the link has been idle.
*/
+int
+get_idle_time(u, ip)
+ int u;
+ struct ppp_idle *ip;
+{
+ return ioctl(ppp_dev_fd, PPPIOCGIDLE, ip) >= 0;
+}
-int sifup (int u)
- {
- struct ifreq ifr;
-
- memset (&ifr, '\0', sizeof (ifr));
- strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
- if (ioctl(sockfd, SIOCGIFFLAGS, (caddr_t) &ifr) < 0)
- {
- syslog(LOG_ERR, "ioctl (SIOCGIFFLAGS): %m");
- return 0;
- }
-
- ifr.ifr_flags |= (IFF_UP | IFF_POINTOPOINT);
- if (ioctl(sockfd, SIOCSIFFLAGS, (caddr_t) &ifr) < 0)
- {
- syslog(LOG_ERR, "ioctl(SIOCSIFFLAGS): %m");
- return 0;
- }
- if_is_up = 1;
- return 1;
- }
-
-/*
- * sifdown - Config the interface down and disable IP.
+/********************************************************************
+ *
+ * get_ppp_stats - return statistics for the link.
*/
+int
+get_ppp_stats(u, stats)
+ int u;
+ struct pppd_stats *stats;
+{
+ struct ifpppstatsreq req;
-int sifdown (int u)
- {
- struct ifreq ifr;
-
- memset (&ifr, '\0', sizeof (ifr));
- strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
- if (ioctl(sockfd, SIOCGIFFLAGS, (caddr_t) &ifr) < 0)
- {
- syslog(LOG_ERR, "ioctl (SIOCGIFFLAGS): %m");
- return 0;
- }
+ memset (&req, 0, sizeof (req));
- ifr.ifr_flags &= ~IFF_UP;
- ifr.ifr_flags |= IFF_POINTOPOINT;
- if (ioctl(sockfd, SIOCSIFFLAGS, (caddr_t) &ifr) < 0)
- {
- syslog(LOG_ERR, "ioctl(SIOCSIFFLAGS): %m");
+ req.stats_ptr = (caddr_t) &req.stats;
+ strlcpy(req.ifr__name, ifname, sizeof(req.ifr__name));
+ if (ioctl(sock_fd, SIOCGPPPSTATS, &req) < 0) {
+ error("Couldn't get PPP statistics: %m");
return 0;
- }
- if_is_up = 0;
+ }
+ stats->bytes_in = req.stats.p.ppp_ibytes;
+ stats->bytes_out = req.stats.p.ppp_obytes;
+ stats->pkts_in = req.stats.p.ppp_ipackets;
+ stats->pkts_out = req.stats.p.ppp_opackets;
return 1;
- }
-
-/*
- * sifaddr - Config the interface IP addresses and netmask.
- */
-
-int sifaddr (int unit, int our_adr, int his_adr, int net_mask)
- {
- struct ifreq ifr;
- struct rtentry rt;
-
- memset (&ifr, '\0', sizeof (ifr));
- memset (&rt, '\0', sizeof (rt));
-
- SET_SA_FAMILY (ifr.ifr_addr, AF_INET);
- SET_SA_FAMILY (ifr.ifr_dstaddr, AF_INET);
- SET_SA_FAMILY (ifr.ifr_netmask, AF_INET);
+}
- strncpy (ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
-/*
- * Set our IP address
- */
- ((struct sockaddr_in *) &ifr.ifr_addr)->sin_addr.s_addr = our_adr;
- if (ioctl(sockfd, SIOCSIFADDR, (caddr_t) &ifr) < 0)
- {
- if (errno != EEXIST)
- {
- syslog (LOG_ERR, "ioctl(SIOCAIFADDR): %m");
- }
- else
- {
- syslog (LOG_WARNING, "ioctl(SIOCAIFADDR): Address already exists");
- }
- return (0);
- }
-/*
- * Set the gateway address
- */
- ((struct sockaddr_in *) &ifr.ifr_dstaddr)->sin_addr.s_addr = his_adr;
- if (ioctl(sockfd, SIOCSIFDSTADDR, (caddr_t) &ifr) < 0)
- {
- syslog (LOG_ERR, "ioctl(SIOCSIFDSTADDR): %m");
- return (0);
- }
-/*
- * Set the netmask
- */
- if (net_mask != 0)
- {
- ((struct sockaddr_in *) &ifr.ifr_netmask)->sin_addr.s_addr = net_mask;
- if (ioctl(sockfd, SIOCSIFNETMASK, (caddr_t) &ifr) < 0)
- {
- syslog (LOG_ERR, "ioctl(SIOCSIFNETMASK): %m");
- return (0);
- }
- }
-/*
- * Add the device route
+/********************************************************************
+ *
+ * ccp_fatal_error - returns 1 if decompression was disabled as a
+ * result of an error detected after decompression of a packet,
+ * 0 otherwise. This is necessary because of patent nonsense.
*/
- SET_SA_FAMILY (rt.rt_dst, AF_INET);
- SET_SA_FAMILY (rt.rt_gateway, AF_INET);
- rt.rt_dev = ifname; /* MJC */
- ((struct sockaddr_in *) &rt.rt_gateway)->sin_addr.s_addr = 0L;
- ((struct sockaddr_in *) &rt.rt_dst)->sin_addr.s_addr = his_adr;
- rt.rt_flags = RTF_UP | RTF_HOST;
-
- if (ioctl(sockfd, SIOCADDRT, &rt) < 0)
- {
- syslog (LOG_ERR, "ioctl(SIOCADDRT) device route: %m");
- return (0);
- }
- return 1;
- }
+int ccp_fatal_error (int unit)
+{
+ int flags;
-/*
- * cifaddr - Clear the interface IP addresses, and delete routes
- * through the interface if possible.
- */
+ if (ioctl(ppp_dev_fd, PPPIOCGFLAGS, &flags) < 0) {
+ error("Couldn't read compression error flags: %m");
+ flags = 0;
+ }
+ return flags & SC_DC_FERROR;
+}
-int cifaddr (int unit, int our_adr, int his_adr)
- {
- struct rtentry rt;
-/*
- * Delete the route through the device
+/********************************************************************
+ *
+ * path_to_procfs - find the path to the proc file system mount point
*/
- memset (&rt, '\0', sizeof (rt));
+static char proc_path[MAXPATHLEN];
+static int proc_path_len;
- SET_SA_FAMILY (rt.rt_dst, AF_INET);
- SET_SA_FAMILY (rt.rt_gateway, AF_INET);
- rt.rt_dev = ifname; /* MJC */
-
- ((struct sockaddr_in *) &rt.rt_gateway)->sin_addr.s_addr = 0;
- ((struct sockaddr_in *) &rt.rt_dst)->sin_addr.s_addr = his_adr;
- rt.rt_flags = RTF_UP | RTF_HOST;
+static char *path_to_procfs(const char *tail)
+{
+ struct mntent *mntent;
+ FILE *fp;
- if (ioctl(sockfd, SIOCDELRT, &rt) < 0 && errno != ESRCH)
- {
- if (still_ppp())
- {
- syslog (LOG_ERR, "ioctl(SIOCDELRT) device route: %m");
- return (0);
- }
- }
- return 1;
- }
+ if (proc_path_len == 0) {
+ /* Default the mount location of /proc */
+ strlcpy (proc_path, "/proc", sizeof(proc_path));
+ proc_path_len = 5;
+ fp = fopen(MOUNTED, "r");
+ if (fp != NULL) {
+ while ((mntent = getmntent(fp)) != NULL) {
+ if (strcmp(mntent->mnt_type, MNTTYPE_IGNORE) == 0)
+ continue;
+ if (strcmp(mntent->mnt_type, "proc") == 0) {
+ strlcpy(proc_path, mntent->mnt_dir, sizeof(proc_path));
+ proc_path_len = strlen(proc_path);
+ break;
+ }
+ }
+ fclose (fp);
+ }
+ }
+
+ strlcpy(proc_path + proc_path_len, tail,
+ sizeof(proc_path) - proc_path_len);
+ return proc_path;
+}
/*
- * path_to_route - determine the path to the proc file system data
+ * /proc/net/route parsing stuff.
*/
-
+#define ROUTE_MAX_COLS 12
FILE *route_fd = (FILE *) 0;
-static char route_buffer [512];
+static char route_buffer[512];
+static int route_dev_col, route_dest_col, route_gw_col;
+static int route_flags_col, route_mask_col;
+static int route_num_cols;
-static char *path_to_route (void);
static int open_route_table (void);
static void close_route_table (void);
static int read_route_table (struct rtentry *rt);
-static int defaultroute_exists (void);
-
-/*
- * path_to_route - find the path to the route tables in the proc file system
- */
-
-static char *path_to_route (void)
- {
- struct mntent *mntent;
- FILE *fp;
-
- fp = fopen (MOUNTED, "r");
- if (fp != 0)
- {
- mntent = getmntent (fp);
- while (mntent != (struct mntent *) 0)
- {
- if (strcmp (mntent->mnt_type, MNTTYPE_IGNORE) != 0)
- {
- if (strcmp (mntent->mnt_type, "proc") == 0)
- {
- strncpy (route_buffer, mntent->mnt_dir,
- sizeof (route_buffer)-10);
- route_buffer [sizeof (route_buffer)-10] = '\0';
- strcat (route_buffer, "/net/route");
-
- fclose (fp);
- return (route_buffer);
- }
- }
- mntent = getmntent (fp);
- }
- fclose (fp);
- }
-
- syslog (LOG_ERR, "proc file system not mounted");
- return 0;
- }
-/*
+/********************************************************************
+ *
* close_route_table - close the interface to the route table
*/
static void close_route_table (void)
- {
- if (route_fd != (FILE *) 0)
- {
- fclose (route_fd);
- route_fd = (FILE *) 0;
- }
- }
+{
+ if (route_fd != (FILE *) 0) {
+ fclose (route_fd);
+ route_fd = (FILE *) 0;
+ }
+}
-/*
+/********************************************************************
+ *
* open_route_table - open the interface to the route table
*/
+static char route_delims[] = " \t\n";
static int open_route_table (void)
- {
+{
char *path;
close_route_table();
- path = path_to_route();
- if (path == NULL)
- {
- return 0;
- }
-
+ path = path_to_procfs("/net/route");
route_fd = fopen (path, "r");
- if (route_fd == (FILE *) 0)
- {
- syslog (LOG_ERR, "can not open %s: %m", path);
- return 0;
- }
+ if (route_fd == NULL) {
+ error("can't open routing table %s: %m", path);
+ return 0;
+ }
+
+ route_dev_col = 0; /* default to usual columns */
+ route_dest_col = 1;
+ route_gw_col = 2;
+ route_flags_col = 3;
+ route_mask_col = 7;
+ route_num_cols = 8;
+
+ /* parse header line */
+ if (fgets(route_buffer, sizeof(route_buffer), route_fd) != 0) {
+ char *p = route_buffer, *q;
+ int col;
+ for (col = 0; col < ROUTE_MAX_COLS; ++col) {
+ int used = 1;
+ if ((q = strtok(p, route_delims)) == 0)
+ break;
+ if (strcasecmp(q, "iface") == 0)
+ route_dev_col = col;
+ else if (strcasecmp(q, "destination") == 0)
+ route_dest_col = col;
+ else if (strcasecmp(q, "gateway") == 0)
+ route_gw_col = col;
+ else if (strcasecmp(q, "flags") == 0)
+ route_flags_col = col;
+ else if (strcasecmp(q, "mask") == 0)
+ route_mask_col = col;
+ else
+ used = 0;
+ if (used && col >= route_num_cols)
+ route_num_cols = col + 1;
+ p = NULL;
+ }
+ }
+
return 1;
- }
+}
-/*
+/********************************************************************
+ *
* read_route_table - read the next entry from the route table
*/
-static int read_route_table (struct rtentry *rt)
- {
- static char delims[] = " \t\n";
- char *dev_ptr, *ptr, *dst_ptr, *gw_ptr, *flag_ptr;
-
+static int read_route_table(struct rtentry *rt)
+{
+ char *cols[ROUTE_MAX_COLS], *p;
+ int col;
+
memset (rt, '\0', sizeof (struct rtentry));
- for (;;)
- {
- if (fgets (route_buffer, sizeof (route_buffer), route_fd) ==
- (char *) 0)
- {
- return 0;
- }
-
- dev_ptr = strtok (route_buffer, delims); /* interface name */
- dst_ptr = strtok (NULL, delims); /* destination address */
- gw_ptr = strtok (NULL, delims); /* gateway */
- flag_ptr = strtok (NULL, delims); /* flags */
-
- if (flag_ptr == (char *) 0) /* assume that we failed, somewhere. */
- {
- return 0;
- }
-
- /* Discard that stupid header line which should never
- * have been there in the first place !! */
- if (isxdigit (*dst_ptr) && isxdigit (*gw_ptr) && isxdigit (*flag_ptr))
- {
- break;
- }
- }
+ if (fgets (route_buffer, sizeof (route_buffer), route_fd) == (char *) 0)
+ return 0;
- ((struct sockaddr_in *) &rt->rt_dst)->sin_addr.s_addr =
- strtoul (dst_ptr, NULL, 16);
+ p = route_buffer;
+ for (col = 0; col < route_num_cols; ++col) {
+ cols[col] = strtok(p, route_delims);
+ if (cols[col] == NULL)
+ return 0; /* didn't get enough columns */
+ p = NULL;
+ }
- ((struct sockaddr_in *) &rt->rt_gateway)->sin_addr.s_addr =
- strtoul (gw_ptr, NULL, 16);
+ SIN_ADDR(rt->rt_dst) = strtoul(cols[route_dest_col], NULL, 16);
+ SIN_ADDR(rt->rt_gateway) = strtoul(cols[route_gw_col], NULL, 16);
+ SIN_ADDR(rt->rt_genmask) = strtoul(cols[route_mask_col], NULL, 16);
- rt->rt_flags = (short) strtoul (flag_ptr, NULL, 16);
- rt->rt_dev = dev_ptr;
+ rt->rt_flags = (short) strtoul(cols[route_flags_col], NULL, 16);
+ rt->rt_dev = cols[route_dev_col];
return 1;
- }
+}
-/*
+/********************************************************************
+ *
* defaultroute_exists - determine if there is a default route
*/
-static int defaultroute_exists (void)
- {
- struct rtentry rt;
- int result = 0;
+static int defaultroute_exists (struct rtentry *rt)
+{
+ int result = 0;
if (!open_route_table())
- {
- return 0;
- }
+ return 0;
- while (read_route_table(&rt) != 0)
- {
- if ((rt.rt_flags & RTF_UP) == 0)
- {
+ while (read_route_table(rt) != 0) {
+ if ((rt->rt_flags & RTF_UP) == 0)
continue;
- }
-
- if (((struct sockaddr_in *) &rt.rt_dst)->sin_addr.s_addr == 0L)
- {
- syslog (LOG_ERR,
- "ppp not replacing existing default route to %s[%s]",
- rt.rt_dev,
- inet_ntoa (((struct sockaddr_in *) &rt.rt_gateway)->
- sin_addr.s_addr));
+
+ if (kernel_version > KVERSION(2,1,0) && SIN_ADDR(rt->rt_genmask) != 0)
+ continue;
+ if (SIN_ADDR(rt->rt_dst) == 0L) {
result = 1;
break;
- }
- }
+ }
+ }
close_route_table();
return result;
- }
+}
/*
+ * have_route_to - determine if the system has any route to
+ * a given IP address. `addr' is in network byte order.
+ * Return value is 1 if yes, 0 if no, -1 if don't know.
+ * For demand mode to work properly, we have to ignore routes
+ * through our own interface.
+ */
+int have_route_to(u_int32_t addr)
+{
+ struct rtentry rt;
+ int result = 0;
+
+ if (!open_route_table())
+ return -1; /* don't know */
+
+ while (read_route_table(&rt)) {
+ if ((rt.rt_flags & RTF_UP) == 0 || strcmp(rt.rt_dev, ifname) == 0)
+ continue;
+ if ((addr & SIN_ADDR(rt.rt_genmask)) == SIN_ADDR(rt.rt_dst)) {
+ result = 1;
+ break;
+ }
+ }
+
+ close_route_table();
+ return result;
+}
+
+/********************************************************************
+ *
* sifdefaultroute - assign a default route through the address given.
*/
-int sifdefaultroute (int unit, int gateway)
- {
+int sifdefaultroute (int unit, u_int32_t ouraddr, u_int32_t gateway)
+{
struct rtentry rt;
- if (has_default_route == 0)
- {
- if (defaultroute_exists())
- {
- return 0;
- }
+ if (defaultroute_exists(&rt) && strcmp(rt.rt_dev, ifname) != 0) {
+ u_int32_t old_gateway = SIN_ADDR(rt.rt_gateway);
- memset (&rt, '\0', sizeof (rt));
- SET_SA_FAMILY (rt.rt_dst, AF_INET);
- SET_SA_FAMILY (rt.rt_gateway, AF_INET);
- ((struct sockaddr_in *) &rt.rt_gateway)->sin_addr.s_addr = gateway;
-
- rt.rt_flags = RTF_UP | RTF_GATEWAY;
- if (ioctl(sockfd, SIOCADDRT, &rt) < 0)
- {
- syslog (LOG_ERR, "default route ioctl(SIOCADDRT): %m");
- return 0;
- }
- }
- has_default_route = 1;
- default_route_gateway = g;
+ if (old_gateway != gateway)
+ error("not replacing existing default route to %s [%I]",
+ rt.rt_dev, old_gateway);
+ return 0;
+ }
+
+ memset (&rt, '\0', sizeof (rt));
+ SET_SA_FAMILY (rt.rt_dst, AF_INET);
+ SET_SA_FAMILY (rt.rt_gateway, AF_INET);
+
+ rt.rt_dev = ifname;
+
+ if (kernel_version > KVERSION(2,1,0)) {
+ SET_SA_FAMILY (rt.rt_genmask, AF_INET);
+ SIN_ADDR(rt.rt_genmask) = 0L;
+ }
+
+ SIN_ADDR(rt.rt_gateway) = gateway;
+
+ rt.rt_flags = RTF_UP | RTF_GATEWAY;
+ if (ioctl(sock_fd, SIOCADDRT, &rt) < 0) {
+ if ( ! ok_error ( errno ))
+ error("default route ioctl(SIOCADDRT): %m");
+ return 0;
+ }
+
+ default_route_gateway = gateway;
return 1;
- }
+}
-/*
+/********************************************************************
+ *
* cifdefaultroute - delete a default route through the address given.
*/
-int cifdefaultroute (int unit, int gateway)
- {
+int cifdefaultroute (int unit, u_int32_t ouraddr, u_int32_t gateway)
+{
struct rtentry rt;
- if (has_default_route)
- {
- memset (&rt, '\0', sizeof (rt));
- SET_SA_FAMILY (rt.rt_dst, AF_INET);
- SET_SA_FAMILY (rt.rt_gateway, AF_INET);
- ((struct sockaddr_in *) &rt.rt_gateway)->sin_addr.s_addr = gateway;
-
- rt.rt_flags = RTF_UP | RTF_GATEWAY;
- if (ioctl(sockfd, SIOCDELRT, &rt) < 0 && errno != ESRCH)
- {
- if (still_ppp())
- {
- syslog (LOG_ERR, "default route ioctl(SIOCDELRT): %m");
- return 0;
- }
- }
- }
- has_default_route = 0;
+ default_route_gateway = 0;
+
+ memset (&rt, '\0', sizeof (rt));
+ SET_SA_FAMILY (rt.rt_dst, AF_INET);
+ SET_SA_FAMILY (rt.rt_gateway, AF_INET);
+
+ if (kernel_version > KVERSION(2,1,0)) {
+ SET_SA_FAMILY (rt.rt_genmask, AF_INET);
+ SIN_ADDR(rt.rt_genmask) = 0L;
+ }
+
+ SIN_ADDR(rt.rt_gateway) = gateway;
+
+ rt.rt_flags = RTF_UP | RTF_GATEWAY;
+ if (ioctl(sock_fd, SIOCDELRT, &rt) < 0 && errno != ESRCH) {
+ if (still_ppp()) {
+ if ( ! ok_error ( errno ))
+ error("default route ioctl(SIOCDELRT): %m");
+ return 0;
+ }
+ }
+
return 1;
- }
+}
-/*
+/********************************************************************
+ *
* sifproxyarp - Make a proxy ARP entry for the peer.
*/
int sifproxyarp (int unit, u_int32_t his_adr)
- {
+{
struct arpreq arpreq;
+ char *forw_path;
- if (has_proxy_arp == 0)
- {
+ if (has_proxy_arp == 0) {
memset (&arpreq, '\0', sizeof(arpreq));
+
+ SET_SA_FAMILY(arpreq.arp_pa, AF_INET);
+ SIN_ADDR(arpreq.arp_pa) = his_adr;
+ arpreq.arp_flags = ATF_PERM | ATF_PUBL;
/*
* Get the hardware address of an interface on the same subnet
* as our local address.
*/
- if (!get_ether_addr(his_adr, &arpreq.arp_ha))
- {
- syslog(LOG_ERR, "Cannot determine ethernet address for proxy ARP");
+ if (!get_ether_addr(his_adr, &arpreq.arp_ha, proxy_arp_dev,
+ sizeof(proxy_arp_dev))) {
+ error("Cannot determine ethernet address for proxy ARP");
return 0;
- }
-
- SET_SA_FAMILY(arpreq.arp_pa, AF_INET);
- ((struct sockaddr_in *) &arpreq.arp_pa)->sin_addr.s_addr = his_adr;
- arpreq.arp_flags = ATF_PERM | ATF_PUBL;
-
- if (ioctl(sockfd, SIOCSARP, (caddr_t)&arpreq) < 0)
- {
- syslog(LOG_ERR, "ioctl(SIOCSARP): %m");
+ }
+ strlcpy(arpreq.arp_dev, proxy_arp_dev, sizeof(arpreq.arp_dev));
+
+ if (ioctl(sock_fd, SIOCSARP, (caddr_t)&arpreq) < 0) {
+ if ( ! ok_error ( errno ))
+ error("ioctl(SIOCSARP): %m");
return 0;
- }
- }
+ }
+ proxy_arp_addr = his_adr;
+ has_proxy_arp = 1;
+
+ if (tune_kernel) {
+ forw_path = path_to_procfs("/sys/net/ipv4/ip_forward");
+ if (forw_path != 0) {
+ int fd = open(forw_path, O_WRONLY);
+ if (fd >= 0) {
+ if (write(fd, "1", 1) != 1)
+ error("Couldn't enable IP forwarding: %m");
+ close(fd);
+ }
+ }
+ }
+ }
- proxy_arp_addr = hisaddr;
- has_proxy_arp = 1;
return 1;
- }
+}
-/*
+/********************************************************************
+ *
* cifproxyarp - Delete the proxy ARP entry for the peer.
*/
int cifproxyarp (int unit, u_int32_t his_adr)
- {
+{
struct arpreq arpreq;
- if (has_proxy_arp == 1)
- {
+ if (has_proxy_arp) {
+ has_proxy_arp = 0;
memset (&arpreq, '\0', sizeof(arpreq));
SET_SA_FAMILY(arpreq.arp_pa, AF_INET);
-
- ((struct sockaddr_in *) &arpreq.arp_pa)->sin_addr.s_addr = his_adr;
- if (ioctl(sockfd, SIOCDARP, (caddr_t)&arpreq) < 0)
- {
- syslog(LOG_WARNING, "ioctl(SIOCDARP): %m");
+ SIN_ADDR(arpreq.arp_pa) = his_adr;
+ arpreq.arp_flags = ATF_PERM | ATF_PUBL;
+ strlcpy(arpreq.arp_dev, proxy_arp_dev, sizeof(arpreq.arp_dev));
+
+ if (ioctl(sock_fd, SIOCDARP, (caddr_t)&arpreq) < 0) {
+ if ( ! ok_error ( errno ))
+ warn("ioctl(SIOCDARP): %m");
return 0;
- }
- }
- has_proxy_arp = 0;
+ }
+ }
return 1;
- }
-
-/*
+}
+
+/********************************************************************
+ *
* get_ether_addr - get the hardware address of an interface on the
* the same subnet as ipaddr.
*/
-static int get_ether_addr (u_int32_t ipaddr, struct sockaddr *hwaddr)
- {
- struct ifreq *ifr, *ifend, *ifp;
- int i;
+static int get_ether_addr (u_int32_t ipaddr,
+ struct sockaddr *hwaddr,
+ char *name, int namelen)
+{
+ struct ifreq *ifr, *ifend;
u_int32_t ina, mask;
- struct sockaddr_dl *dla;
- struct ifreq ifreq;
+ char *aliasp;
+ struct ifreq ifreq, bestifreq;
struct ifconf ifc;
struct ifreq ifs[MAX_IFS];
-
+
+ u_int32_t bestmask=0;
+ int found_interface = 0;
+
ifc.ifc_len = sizeof(ifs);
ifc.ifc_req = ifs;
- if (ioctl(sockfd, SIOCGIFCONF, &ifc) < 0)
- {
- syslog(LOG_ERR, "ioctl(SIOCGIFCONF): %m");
+ if (ioctl(sock_fd, SIOCGIFCONF, &ifc) < 0) {
+ if ( ! ok_error ( errno ))
+ error("ioctl(SIOCGIFCONF): %m (line %d)", __LINE__);
return 0;
- }
+ }
- MAINDEBUG ((LOG_DEBUG, "proxy arp: scanning %d interfaces for IP %s",
+ SYSDEBUG ((LOG_DEBUG, "proxy arp: scanning %d interfaces for IP %s",
ifc.ifc_len / sizeof(struct ifreq), ip_ntoa(ipaddr)));
/*
* Scan through looking for an interface with an Internet
* address on the same subnet as `ipaddr'.
*/
ifend = ifs + (ifc.ifc_len / sizeof(struct ifreq));
- for (ifr = ifc.ifc_req; ifr < ifend; ifr++)
- {
- if (ifr->ifr_addr.sa_family == AF_INET)
- {
- ina = ((struct sockaddr_in *) &ifr->ifr_addr)->sin_addr.s_addr;
- strncpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
- MAINDEBUG ((LOG_DEBUG, "proxy arp: examining interface %s",
+ for (ifr = ifc.ifc_req; ifr < ifend; ifr++) {
+ if (ifr->ifr_addr.sa_family == AF_INET) {
+ ina = SIN_ADDR(ifr->ifr_addr);
+ strlcpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
+ SYSDEBUG ((LOG_DEBUG, "proxy arp: examining interface %s",
ifreq.ifr_name));
/*
* Check that the interface is up, and not point-to-point
* nor loopback.
*/
- if (ioctl(sockfd, SIOCGIFFLAGS, &ifreq) < 0)
- {
+ if (ioctl(sock_fd, SIOCGIFFLAGS, &ifreq) < 0)
continue;
- }
if (((ifreq.ifr_flags ^ FLAGS_GOOD) & FLAGS_MASK) != 0)
- {
continue;
- }
/*
* Get its netmask and check that it's on the right subnet.
*/
- if (ioctl(sockfd, SIOCGIFNETMASK, &ifreq) < 0)
- {
- continue;
- }
+ if (ioctl(sock_fd, SIOCGIFNETMASK, &ifreq) < 0)
+ continue;
- mask = ((struct sockaddr_in *) &ifreq.ifr_addr)->sin_addr.s_addr;
- MAINDEBUG ((LOG_DEBUG, "proxy arp: interface addr %s mask %lx",
- ip_ntoa(ina), ntohl(mask)));
+ mask = SIN_ADDR(ifreq.ifr_addr);
+ SYSDEBUG ((LOG_DEBUG, "proxy arp: interface addr %s mask %lx",
+ ip_ntoa(ina), ntohl(mask)));
if (((ipaddr ^ ina) & mask) != 0)
- {
- continue;
- }
- break;
- }
- }
-
- if (ifr >= ifend)
- {
- return 0;
- }
+ continue; /* no match */
+ /* matched */
+ if (mask >= bestmask) {
+ /* Compare using >= instead of > -- it is possible for
+ an interface to have a netmask of 0.0.0.0 */
+ found_interface = 1;
+ bestifreq = ifreq;
+ bestmask = mask;
+ }
+ }
+ }
+
+ if (!found_interface) return 0;
- syslog(LOG_INFO, "found interface %s for proxy arp", ifreq.ifr_name);
+ strlcpy(name, bestifreq.ifr_name, namelen);
+
+ /* trim off the :1 in eth0:1 */
+ aliasp = strchr(name, ':');
+ if (aliasp != 0)
+ *aliasp = 0;
+
+ info("found interface %s for proxy arp", name);
/*
* Now get the hardware address.
*/
- memset (&ifreq.ifr_hwaddr, 0, sizeof (struct sockaddr));
- if (ioctl (sockfd, SIOCGIFHWADDR, &ifreq) < 0)
- {
- syslog(LOG_ERR, "SIOCGIFHWADDR(%s): %m", ifreq.ifr_name);
- return 0;
- }
+ memset (&bestifreq.ifr_hwaddr, 0, sizeof (struct sockaddr));
+ if (ioctl (sock_fd, SIOCGIFHWADDR, &bestifreq) < 0) {
+ error("SIOCGIFHWADDR(%s): %m", bestifreq.ifr_name);
+ return 0;
+ }
memcpy (hwaddr,
- &ifreq.ifr_hwaddr,
+ &bestifreq.ifr_hwaddr,
sizeof (struct sockaddr));
- MAINDEBUG ((LOG_DEBUG,
+ SYSDEBUG ((LOG_DEBUG,
"proxy arp: found hwaddr %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x",
(int) ((unsigned char *) &hwaddr->sa_data)[0],
(int) ((unsigned char *) &hwaddr->sa_data)[1],
(int) ((unsigned char *) &hwaddr->sa_data)[6],
(int) ((unsigned char *) &hwaddr->sa_data)[7]));
return 1;
- }
+}
/*
+ * get_if_hwaddr - get the hardware address for the specified
+ * network interface device.
+ */
+int
+get_if_hwaddr(u_char *addr, char *name)
+{
+ struct ifreq ifreq;
+ int ret, sock_fd;
+
+ sock_fd = socket(AF_INET, SOCK_DGRAM, 0);
+ if (sock_fd < 0)
+ return 0;
+ memset(&ifreq.ifr_hwaddr, 0, sizeof(struct sockaddr));
+ strlcpy(ifreq.ifr_name, name, sizeof(ifreq.ifr_name));
+ ret = ioctl(sock_fd, SIOCGIFHWADDR, &ifreq);
+ close(sock_fd);
+ if (ret >= 0)
+ memcpy(addr, ifreq.ifr_hwaddr.sa_data, 6);
+ return ret;
+}
+
+/*
+ * get_first_ethernet - return the name of the first ethernet-style
+ * interface on this system.
+ */
+char *
+get_first_ethernet()
+{
+ return "eth0";
+}
+
+/********************************************************************
+ *
* Return user specified netmask, modified by any mask we might determine
* for address `addr' (in network byte order).
* Here we scan through the system's list of interfaces, looking for
*/
u_int32_t GetMask (u_int32_t addr)
- {
+{
u_int32_t mask, nmask, ina;
struct ifreq *ifr, *ifend, ifreq;
struct ifconf ifc;
struct ifreq ifs[MAX_IFS];
addr = ntohl(addr);
-
+
if (IN_CLASSA(addr)) /* determine network mask for address class */
- {
nmask = IN_CLASSA_NET;
- }
- else
- {
- if (IN_CLASSB(addr))
- {
+ else if (IN_CLASSB(addr))
nmask = IN_CLASSB_NET;
- }
- else
- {
+ else
nmask = IN_CLASSC_NET;
- }
- }
-
+
/* class D nets are disallowed by bad_ip_adrs */
mask = netmask | htonl(nmask);
/*
*/
ifc.ifc_len = sizeof(ifs);
ifc.ifc_req = ifs;
- if (ioctl(sockfd, SIOCGIFCONF, &ifc) < 0)
- {
- syslog(LOG_WARNING, "ioctl(SIOCGIFCONF): %m");
+ if (ioctl(sock_fd, SIOCGIFCONF, &ifc) < 0) {
+ if ( ! ok_error ( errno ))
+ warn("ioctl(SIOCGIFCONF): %m (line %d)", __LINE__);
return mask;
- }
-
+ }
+
ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
- for (ifr = ifc.ifc_req; ifr < ifend; ifr++)
- {
+ for (ifr = ifc.ifc_req; ifr < ifend; ifr++) {
/*
* Check the interface's internet address.
*/
if (ifr->ifr_addr.sa_family != AF_INET)
- {
continue;
- }
- ina = ((struct sockaddr_in *) &ifr->ifr_addr)->sin_addr.s_addr;
+ ina = SIN_ADDR(ifr->ifr_addr);
if (((ntohl(ina) ^ addr) & nmask) != 0)
- {
continue;
- }
/*
* Check that the interface is up, and not point-to-point nor loopback.
*/
- strncpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
- if (ioctl(sockfd, SIOCGIFFLAGS, &ifreq) < 0)
- {
+ strlcpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
+ if (ioctl(sock_fd, SIOCGIFFLAGS, &ifreq) < 0)
continue;
- }
-
+
if (((ifreq.ifr_flags ^ FLAGS_GOOD) & FLAGS_MASK) != 0)
- {
continue;
- }
/*
* Get its netmask and OR it into our mask.
*/
- if (ioctl(sockfd, SIOCGIFNETMASK, &ifreq) < 0)
- {
+ if (ioctl(sock_fd, SIOCGIFNETMASK, &ifreq) < 0)
continue;
- }
- mask |= ((struct sockaddr_in *)&ifreq.ifr_addr)->sin_addr.s_addr;
+ mask |= SIN_ADDR(ifreq.ifr_addr);
break;
- }
+ }
return mask;
- }
+}
-/*
+/********************************************************************
+ *
* Internal routine to decode the version.modification.patch level
*/
static void decode_version (char *buf, int *version,
int *modification, int *patch)
- {
- *version = (int) strtoul (buf, &buf, 10);
+{
+ char *endp;
+
+ *version = (int) strtoul (buf, &endp, 10);
*modification = 0;
*patch = 0;
-
- if (*buf == '.')
- {
- ++buf;
- *modification = (int) strtoul (buf, &buf, 10);
- if (*buf == '.')
- {
- ++buf;
+
+ if (endp != buf && *endp == '.') {
+ buf = endp + 1;
+ *modification = (int) strtoul (buf, &endp, 10);
+ if (endp != buf && *endp == '.') {
+ buf = endp + 1;
*patch = (int) strtoul (buf, &buf, 10);
- }
- }
-
- if (*buf != '\0')
- {
- *version =
- *modification =
- *patch = 0;
- }
- }
+ }
+ }
+}
-/*
- * Procedure to determine if the PPP line dicipline is registered.
+/********************************************************************
+ *
+ * Procedure to determine if the PPP line discipline is registered.
*/
-int
+static int
ppp_registered(void)
- {
+{
int local_fd;
- int ppp_disc = N_PPP;
- int init_disc = -1;
- int initfdflags;
-
- local_fd = open(devnam, O_NONBLOCK | O_RDWR, 0);
- if (local_fd < 0)
- {
- syslog(LOG_ERR, "Failed to open %s: %m", devnam);
- return 0;
- }
+ int mfd = -1;
+ int ret = 0;
+ char slave[16];
- initfdflags = fcntl(local_fd, F_GETFL);
- if (initfdflags == -1)
- {
- syslog(LOG_ERR, "Couldn't get device fd flags: %m");
- close (local_fd);
+ /*
+ * We used to open the serial device and set it to the ppp line
+ * discipline here, in order to create a ppp unit. But that is
+ * not a good idea - the user might have specified a device that
+ * they can't open (permission, or maybe it doesn't really exist).
+ * So we grab a pty master/slave pair and use that.
+ */
+ if (!get_pty(&mfd, &local_fd, slave, 0)) {
+ no_ppp_msg = "Couldn't determine if PPP is supported (no free ptys)";
return 0;
- }
+ }
- initfdflags &= ~O_NONBLOCK;
- fcntl(local_fd, F_SETFL, initfdflags);
-/*
- * Read the initial line dicipline and try to put the device into the
- * PPP dicipline.
- */
- if (ioctl(local_fd, TIOCGETD, &init_disc) < 0)
- {
- syslog(LOG_ERR, "ioctl(TIOCGETD): %m");
- close (local_fd);
- return 0;
- }
-
- if (ioctl(local_fd, TIOCSETD, &ppp_disc) < 0)
- {
- syslog(LOG_ERR, "ioctl(TIOCSETD): %m");
- close (local_fd);
- return 0;
- }
-
- if (ioctl(local_fd, TIOCSETD, &init_disc) < 0)
- {
- syslog(LOG_ERR, "ioctl(TIOCSETD): %m");
- close (local_fd);
- return 0;
- }
-
- close (local_fd);
- return 1;
- }
+ /*
+ * Try to put the device into the PPP discipline.
+ */
+ if (ioctl(local_fd, TIOCSETD, &ppp_disc) < 0) {
+ error("ioctl(TIOCSETD(PPP)): %m (line %d)", __LINE__);
+ } else
+ ret = 1;
+
+ close(local_fd);
+ close(mfd);
+ return ret;
+}
-/*
+/********************************************************************
+ *
* ppp_available - check whether the system has any ppp interfaces
* (in fact we check whether we can do an ioctl on ppp0).
*/
int ppp_available(void)
- {
- int s, ok;
+{
+ int s, ok, fd;
struct ifreq ifr;
- char abBuffer [1024];
int size;
int my_version, my_modification, my_patch;
+ int osmaj, osmin, ospatch;
+
+ no_ppp_msg =
+ "This system lacks kernel support for PPP. This could be because\n"
+ "the PPP kernel module could not be loaded, or because PPP was not\n"
+ "included in the kernel configuration. If PPP was included as a\n"
+ "module, try `/sbin/modprobe -v ppp'. If that fails, check that\n"
+ "ppp.o exists in /lib/modules/`uname -r`/net.\n"
+ "See README.linux file in the ppp distribution for more details.\n";
+
+ /* get the kernel version now, since we are called before sys_init */
+ uname(&utsname);
+ osmaj = osmin = ospatch = 0;
+ sscanf(utsname.release, "%d.%d.%d", &osmaj, &osmin, &ospatch);
+ kernel_version = KVERSION(osmaj, osmin, ospatch);
+
+ fd = open("/dev/ppp", O_RDWR);
+#if 0
+ if (fd < 0 && errno == ENOENT) {
+ /* try making it and see if that helps. */
+ if (mknod("/dev/ppp", S_IFCHR | S_IRUSR | S_IWUSR,
+ makedev(108, 0)) >= 0) {
+ fd = open("/dev/ppp", O_RDWR);
+ if (fd >= 0)
+ info("Created /dev/ppp device node");
+ else
+ unlink("/dev/ppp"); /* didn't work, undo the mknod */
+ } else if (errno == EEXIST) {
+ fd = open("/dev/ppp", O_RDWR);
+ }
+ }
+#endif /* 0 */
+ if (fd >= 0) {
+ new_style_driver = 1;
+
+ /* XXX should get from driver */
+ driver_version = 2;
+ driver_modification = 4;
+ driver_patch = 0;
+ close(fd);
+ return 1;
+ }
+ if (kernel_version >= KVERSION(2,3,13)) {
+ if (errno == ENOENT)
+ no_ppp_msg =
+ "pppd is unable to open the /dev/ppp device.\n"
+ "You need to create the /dev/ppp device node by\n"
+ "executing the following command as root:\n"
+ " mknod /dev/ppp c 108 0\n";
+ return 0;
+ }
+
/*
* Open a socket for doing the ioctl operations.
- */
+ */
s = socket(AF_INET, SOCK_DGRAM, 0);
if (s < 0)
- {
return 0;
- }
-
- strncpy (ifr.ifr_name, "ppp0", sizeof (ifr.ifr_name));
+
+ strlcpy (ifr.ifr_name, "ppp0", sizeof (ifr.ifr_name));
ok = ioctl(s, SIOCGIFFLAGS, (caddr_t) &ifr) >= 0;
/*
* If the device did not exist then attempt to create one by putting the
* current tty into the PPP discipline. If this works then obtain the
* flags for the device again.
*/
- if (!ok)
- {
- if (ppp_registered())
- {
- strncpy (ifr.ifr_name, "ppp0", sizeof (ifr.ifr_name));
+ if (!ok) {
+ if (ppp_registered()) {
+ strlcpy (ifr.ifr_name, "ppp0", sizeof (ifr.ifr_name));
ok = ioctl(s, SIOCGIFFLAGS, (caddr_t) &ifr) >= 0;
- }
- }
+ }
+ }
/*
* Ensure that the hardware address is for PPP and not something else
*/
if (ok)
- {
- ok = ioctl (s, SIOCGIFHWADDR, (caddr_t) &ifr) >= 0;
- }
+ ok = ioctl (s, SIOCGIFHWADDR, (caddr_t) &ifr) >= 0;
if (ok && ((ifr.ifr_hwaddr.sa_family & ~0xFF) != ARPHRD_PPP))
- {
- ok = 0;
- }
+ ok = 0;
- if (!ok)
- {
- return 0;
- }
/*
* This is the PPP device. Validate the version of the driver at this
* point to ensure that this program will work with the driver.
*/
- ifr.ifr_data = abBuffer;
- size = ioctl (s, SIOCGPPPVER, (caddr_t) &ifr);
- ok = size >= 0;
+ if (ok) {
+ char abBuffer [1024];
- if (ok)
- {
- decode_version (abBuffer,
- &driver_version,
- &driver_modification,
- &driver_patch);
- }
-
- if (!ok)
- {
- driver_version =
- driver_modification =
- driver_patch = 0;
- }
+ ifr.ifr_data = abBuffer;
+ size = ioctl (s, SIOCGPPPVER, (caddr_t) &ifr);
+ if (size < 0) {
+ error("Couldn't read driver version: %m");
+ ok = 0;
+ no_ppp_msg = "Sorry, couldn't verify kernel driver version\n";
+
+ } else {
+ decode_version(abBuffer,
+ &driver_version,
+ &driver_modification,
+ &driver_patch);
/*
* Validate the version of the driver against the version that we used.
*/
- decode_version (PPP_VERSION,
- &my_version,
- &my_modification,
- &my_patch);
-
- /* The version numbers must match */
- if (driver_version != my_version)
- {
- ok = 0;
- }
-
- /* The modification levels must be legal */
- if (driver_modification < my_modification)
- {
- ok = 0;
- }
-
- if (!ok)
- {
- fprintf(stderr, "Sorry - PPP driver version %d.%d.%d is out of date\n",
- driver_version, driver_modification, driver_patch);
- close (s);
- exit (1);
- }
-
- close(s);
+ decode_version(VERSION,
+ &my_version,
+ &my_modification,
+ &my_patch);
+
+ /* The version numbers must match */
+ if (driver_version != my_version)
+ ok = 0;
+
+ /* The modification levels must be legal */
+ if (driver_modification < 3) {
+ if (driver_modification >= 2) {
+ /* we can cope with 2.2.0 and above */
+ driver_is_old = 1;
+ } else {
+ ok = 0;
+ }
+ }
+
+ close (s);
+ if (!ok) {
+ slprintf(route_buffer, sizeof(route_buffer),
+ "Sorry - PPP driver version %d.%d.%d is out of date\n",
+ driver_version, driver_modification, driver_patch);
+
+ no_ppp_msg = route_buffer;
+ }
+ }
+ }
return ok;
- }
+}
-/*
+/********************************************************************
+ *
* Update the wtmp file with the appropriate user name and tty device.
*/
-int logwtmp (char *line, char *name, char *host)
- {
- struct utmp ut;
- int mode;
-/*
- * Control the 'mesg' function based upon the state of the logon
- * operation.
- */
- mode = (*name != '\0') ? 0600 : 0622;
- if (chmod (devnam, mode) < 0)
- {
- syslog (LOG_ERR, "chmod(\"%s\", 0%o): %m", devnam, mode);
- }
+void logwtmp (const char *line, const char *name, const char *host)
+{
+ struct utmp ut, *utp;
+ pid_t mypid = getpid();
+#if __GLIBC__ < 2
+ int wtmp;
+#endif
+
/*
* Update the signon database for users.
+ * Christoph Lameter: Copied from poeigl-1.36 Jan 3, 1996
*/
- memset (&ut, 0, sizeof (ut));
- (void)strncpy(ut.ut_line, line, sizeof(ut.ut_line));
- (void)strncpy(ut.ut_name, name, sizeof(ut.ut_name));
- (void)strncpy(ut.ut_host, host, sizeof(ut.ut_host));
- (void)time(&ut.ut_time);
-
- pututline (&ut); /* Write the line to the proper place */
- endutent(); /* Indicate operation is complete */
- }
+ utmpname(_PATH_UTMP);
+ setutent();
+ while ((utp = getutent()) && (utp->ut_pid != mypid))
+ /* nothing */;
+
+ if (utp)
+ memcpy(&ut, utp, sizeof(ut));
+ else
+ /* some gettys/telnetds don't initialize utmp... */
+ memset(&ut, 0, sizeof(ut));
+
+ if (ut.ut_id[0] == 0)
+ strncpy(ut.ut_id, line + 3, sizeof(ut.ut_id));
+ strncpy(ut.ut_user, name, sizeof(ut.ut_user));
+ strncpy(ut.ut_line, line, sizeof(ut.ut_line));
+
+ time(&ut.ut_time);
+
+ ut.ut_type = USER_PROCESS;
+ ut.ut_pid = mypid;
+
+ /* Insert the host name if one is supplied */
+ if (*host)
+ strncpy (ut.ut_host, host, sizeof(ut.ut_host));
+
+ /* Insert the IP address of the remote system if IP is enabled */
+ if (ipcp_protent.enabled_flag && ipcp_hisoptions[0].neg_addr)
+ memcpy(&ut.ut_addr, (char *) &ipcp_hisoptions[0].hisaddr,
+ sizeof(ut.ut_addr));
+
+ /* CL: Makes sure that the logout works */
+ if (*host == 0 && *name==0)
+ ut.ut_host[0]=0;
+
+ pututline(&ut);
+ endutent();
/*
- * Code for locking/unlocking the serial device.
- * This code is derived from chat.c.
+ * Update the wtmp file.
*/
+#if __GLIBC__ >= 2
+ updwtmp(_PATH_WTMP, &ut);
+#else
+ wtmp = open(_PATH_WTMP, O_APPEND|O_WRONLY);
+ if (wtmp >= 0) {
+ flock(wtmp, LOCK_EX);
-#define LOCK_PREFIX "/var/lock/LCK.."
+ if (write (wtmp, (char *)&ut, sizeof(ut)) != sizeof(ut))
+ warn("error writing %s: %m", _PATH_WTMP);
-/*
- * lock - create a lock file for the named device
+ flock(wtmp, LOCK_UN);
+
+ close (wtmp);
+ }
+#endif
+}
+
+
+/********************************************************************
+ *
+ * sifvjcomp - config tcp header compression
*/
-int lock (char *dev)
- {
- char hdb_lock_buffer[12];
- int fd, pid, n;
- char *p;
+int sifvjcomp (int u, int vjcomp, int cidcomp, int maxcid)
+{
+ u_int x;
+
+ if (vjcomp) {
+ if (ioctl(ppp_dev_fd, PPPIOCSMAXCID, (caddr_t) &maxcid) < 0)
+ error("Couldn't set up TCP header compression: %m");
+ vjcomp = 0;
+ }
- p = strrchr(dev, '/');
- if (p != NULL)
- {
- dev = ++p;
- }
+ x = (vjcomp? SC_COMP_TCP: 0) | (cidcomp? 0: SC_NO_TCP_CCID);
+ modify_flags(ppp_dev_fd, SC_COMP_TCP|SC_NO_TCP_CCID, x);
- lock_file = malloc(strlen(LOCK_PREFIX) + strlen(dev) + 1);
- if (lock_file == NULL)
- {
- novm("lock file name");
- }
+ return 1;
+}
- strcpy (lock_file, LOCK_PREFIX);
- strcat (lock_file, dev);
+/********************************************************************
+ *
+ * sifup - Config the interface up and enable IP packets to pass.
+ */
+
+int sifup(int u)
+{
+ struct ifreq ifr;
+
+ memset (&ifr, '\0', sizeof (ifr));
+ strlcpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
+ if (ioctl(sock_fd, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) {
+ if (! ok_error (errno))
+ error("ioctl (SIOCGIFFLAGS): %m (line %d)", __LINE__);
+ return 0;
+ }
+
+ ifr.ifr_flags |= (IFF_UP | IFF_POINTOPOINT);
+ if (ioctl(sock_fd, SIOCSIFFLAGS, (caddr_t) &ifr) < 0) {
+ if (! ok_error (errno))
+ error("ioctl(SIOCSIFFLAGS): %m (line %d)", __LINE__);
+ return 0;
+ }
+ if_is_up++;
+
+ return 1;
+}
+
+/********************************************************************
+ *
+ * sifdown - Disable the indicated protocol and config the interface
+ * down if there are no remaining protocols.
+ */
+
+int sifdown (int u)
+{
+ struct ifreq ifr;
+
+ if (if_is_up && --if_is_up > 0)
+ return 1;
+
+ memset (&ifr, '\0', sizeof (ifr));
+ strlcpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
+ if (ioctl(sock_fd, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) {
+ if (! ok_error (errno))
+ error("ioctl (SIOCGIFFLAGS): %m (line %d)", __LINE__);
+ return 0;
+ }
+
+ ifr.ifr_flags &= ~IFF_UP;
+ ifr.ifr_flags |= IFF_POINTOPOINT;
+ if (ioctl(sock_fd, SIOCSIFFLAGS, (caddr_t) &ifr) < 0) {
+ if (! ok_error (errno))
+ error("ioctl(SIOCSIFFLAGS): %m (line %d)", __LINE__);
+ return 0;
+ }
+ return 1;
+}
+
+/********************************************************************
+ *
+ * sifaddr - Config the interface IP addresses and netmask.
+ */
+
+int sifaddr (int unit, u_int32_t our_adr, u_int32_t his_adr,
+ u_int32_t net_mask)
+{
+ struct ifreq ifr;
+ struct rtentry rt;
+
+ memset (&ifr, '\0', sizeof (ifr));
+ memset (&rt, '\0', sizeof (rt));
+
+ SET_SA_FAMILY (ifr.ifr_addr, AF_INET);
+ SET_SA_FAMILY (ifr.ifr_dstaddr, AF_INET);
+ SET_SA_FAMILY (ifr.ifr_netmask, AF_INET);
+
+ strlcpy (ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
+/*
+ * Set our IP address
+ */
+ SIN_ADDR(ifr.ifr_addr) = our_adr;
+ if (ioctl(sock_fd, SIOCSIFADDR, (caddr_t) &ifr) < 0) {
+ if (errno != EEXIST) {
+ if (! ok_error (errno))
+ error("ioctl(SIOCSIFADDR): %m (line %d)", __LINE__);
+ }
+ else {
+ warn("ioctl(SIOCSIFADDR): Address already exists");
+ }
+ return (0);
+ }
+/*
+ * Set the gateway address
+ */
+ SIN_ADDR(ifr.ifr_dstaddr) = his_adr;
+ if (ioctl(sock_fd, SIOCSIFDSTADDR, (caddr_t) &ifr) < 0) {
+ if (! ok_error (errno))
+ error("ioctl(SIOCSIFDSTADDR): %m (line %d)", __LINE__);
+ return (0);
+ }
+/*
+ * Set the netmask.
+ * For recent kernels, force the netmask to 255.255.255.255.
+ */
+ if (kernel_version >= KVERSION(2,1,16))
+ net_mask = ~0L;
+ if (net_mask != 0) {
+ SIN_ADDR(ifr.ifr_netmask) = net_mask;
+ if (ioctl(sock_fd, SIOCSIFNETMASK, (caddr_t) &ifr) < 0) {
+ if (! ok_error (errno))
+ error("ioctl(SIOCSIFNETMASK): %m (line %d)", __LINE__);
+ return (0);
+ }
+ }
/*
- * Attempt to create the lock file at this point.
- */
- while (1)
- {
- fd = open(lock_file, O_EXCL | O_CREAT | O_RDWR, 0644);
- if (fd >= 0)
- {
- sprintf(hdb_lock_buffer, "%010d\n", getpid());
- write(fd, hdb_lock_buffer, 11);
+ * Add the device route
+ */
+ if (kernel_version < KVERSION(2,1,16)) {
+ SET_SA_FAMILY (rt.rt_dst, AF_INET);
+ SET_SA_FAMILY (rt.rt_gateway, AF_INET);
+ rt.rt_dev = ifname;
+
+ SIN_ADDR(rt.rt_gateway) = 0L;
+ SIN_ADDR(rt.rt_dst) = his_adr;
+ rt.rt_flags = RTF_UP | RTF_HOST;
+
+ if (kernel_version > KVERSION(2,1,0)) {
+ SET_SA_FAMILY (rt.rt_genmask, AF_INET);
+ SIN_ADDR(rt.rt_genmask) = -1L;
+ }
+
+ if (ioctl(sock_fd, SIOCADDRT, &rt) < 0) {
+ if (! ok_error (errno))
+ error("ioctl(SIOCADDRT) device route: %m (line %d)", __LINE__);
+ return (0);
+ }
+ }
+
+ /* set ip_dynaddr in demand mode if address changes */
+ if (demand && tune_kernel && !dynaddr_set
+ && our_old_addr && our_old_addr != our_adr) {
+ /* set ip_dynaddr if possible */
+ char *path;
+ int fd;
+
+ path = path_to_procfs("/sys/net/ipv4/ip_dynaddr");
+ if (path != 0 && (fd = open(path, O_WRONLY)) >= 0) {
+ if (write(fd, "1", 1) != 1)
+ error("Couldn't enable dynamic IP addressing: %m");
close(fd);
+ }
+ dynaddr_set = 1; /* only 1 attempt */
+ }
+ our_old_addr = 0;
+
+ return 1;
+}
+
+/********************************************************************
+ *
+ * cifaddr - Clear the interface IP addresses, and delete routes
+ * through the interface if possible.
+ */
+
+int cifaddr (int unit, u_int32_t our_adr, u_int32_t his_adr)
+{
+ struct ifreq ifr;
+
+ if (kernel_version < KVERSION(2,1,16)) {
+/*
+ * Delete the route through the device
+ */
+ struct rtentry rt;
+ memset (&rt, '\0', sizeof (rt));
+
+ SET_SA_FAMILY (rt.rt_dst, AF_INET);
+ SET_SA_FAMILY (rt.rt_gateway, AF_INET);
+ rt.rt_dev = ifname;
+
+ SIN_ADDR(rt.rt_gateway) = 0;
+ SIN_ADDR(rt.rt_dst) = his_adr;
+ rt.rt_flags = RTF_UP | RTF_HOST;
+
+ if (kernel_version > KVERSION(2,1,0)) {
+ SET_SA_FAMILY (rt.rt_genmask, AF_INET);
+ SIN_ADDR(rt.rt_genmask) = -1L;
+ }
+
+ if (ioctl(sock_fd, SIOCDELRT, &rt) < 0 && errno != ESRCH) {
+ if (still_ppp() && ! ok_error (errno))
+ error("ioctl(SIOCDELRT) device route: %m (line %d)", __LINE__);
+ return (0);
+ }
+ }
+
+ /* This way it is possible to have an IPX-only or IPv6-only interface */
+ memset(&ifr, 0, sizeof(ifr));
+ SET_SA_FAMILY(ifr.ifr_addr, AF_INET);
+ strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
+
+ if (ioctl(sock_fd, SIOCSIFADDR, (caddr_t) &ifr) < 0) {
+ if (! ok_error (errno)) {
+ error("ioctl(SIOCSIFADDR): %m (line %d)", __LINE__);
return 0;
- }
+ }
+ }
+
+ our_old_addr = our_adr;
+
+ return 1;
+}
+
+#ifdef INET6
+/********************************************************************
+ *
+ * sif6addr - Config the interface with an IPv6 link-local address
+ */
+int sif6addr (int unit, eui64_t our_eui64, eui64_t his_eui64)
+{
+ struct in6_ifreq ifr6;
+ struct ifreq ifr;
+ struct in6_rtmsg rt6;
+
+ if (sock6_fd < 0) {
+ errno = -sock6_fd;
+ error("IPv6 socket creation failed: %m");
+ return 0;
+ }
+ memset(&ifr, 0, sizeof (ifr));
+ strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
+ if (ioctl(sock6_fd, SIOCGIFINDEX, (caddr_t) &ifr) < 0) {
+ error("sif6addr: ioctl(SIOCGIFINDEX): %m (line %d)", __LINE__);
+ return 0;
+ }
+
+ /* Local interface */
+ memset(&ifr6, 0, sizeof(ifr6));
+ IN6_LLADDR_FROM_EUI64(ifr6.ifr6_addr, our_eui64);
+ ifr6.ifr6_ifindex = ifr.ifr_ifindex;
+ ifr6.ifr6_prefixlen = 10;
+
+ if (ioctl(sock6_fd, SIOCSIFADDR, &ifr6) < 0) {
+ error("sif6addr: ioctl(SIOCSIFADDR): %m (line %d)", __LINE__);
+ return 0;
+ }
+
+ /* Route to remote host */
+ memset(&rt6, 0, sizeof(rt6));
+ IN6_LLADDR_FROM_EUI64(rt6.rtmsg_dst, his_eui64);
+ rt6.rtmsg_flags = RTF_UP;
+ rt6.rtmsg_dst_len = 10;
+ rt6.rtmsg_ifindex = ifr.ifr_ifindex;
+ rt6.rtmsg_metric = 1;
+
+ if (ioctl(sock6_fd, SIOCADDRT, &rt6) < 0) {
+ error("sif6addr: ioctl(SIOCADDRT): %m (line %d)", __LINE__);
+ return 0;
+ }
+
+ return 1;
+}
+
+
+/********************************************************************
+ *
+ * cif6addr - Remove IPv6 address from interface
+ */
+int cif6addr (int unit, eui64_t our_eui64, eui64_t his_eui64)
+{
+ struct ifreq ifr;
+ struct in6_ifreq ifr6;
+
+ if (sock6_fd < 0) {
+ errno = -sock6_fd;
+ error("IPv6 socket creation failed: %m");
+ return 0;
+ }
+ memset(&ifr, 0, sizeof(ifr));
+ strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
+ if (ioctl(sock6_fd, SIOCGIFINDEX, (caddr_t) &ifr) < 0) {
+ error("cif6addr: ioctl(SIOCGIFINDEX): %m (line %d)", __LINE__);
+ return 0;
+ }
+
+ memset(&ifr6, 0, sizeof(ifr6));
+ IN6_LLADDR_FROM_EUI64(ifr6.ifr6_addr, our_eui64);
+ ifr6.ifr6_ifindex = ifr.ifr_ifindex;
+ ifr6.ifr6_prefixlen = 10;
+
+ if (ioctl(sock6_fd, SIOCDIFADDR, &ifr6) < 0) {
+ if (errno != EADDRNOTAVAIL) {
+ if (! ok_error (errno))
+ error("cif6addr: ioctl(SIOCDIFADDR): %m (line %d)", __LINE__);
+ }
+ else {
+ warn("cif6addr: ioctl(SIOCDIFADDR): No such address");
+ }
+ return (0);
+ }
+ return 1;
+}
+#endif /* INET6 */
+
/*
- * If the file exists then check to see if the pid is stale
- */
- if (errno == EEXIST)
- {
- fd = open(lock_file, O_RDONLY, 0);
- if (fd < 0)
- {
- if (errno == ENOENT) /* This is just a timing problem. */
- {
- continue;
- }
- break;
- }
-
- /* Read the lock file to find out who has the device locked */
- n = read (fd, hdb_lock_buffer, 11);
- close (fd);
- if (n < 0)
- {
- syslog(LOG_ERR, "Can't read pid from lock file %s", lock_file);
- break;
- }
-
- /* See the process still exists. */
- if (n > 0)
- {
- hdb_lock_buffer[n] = '\0';
- sscanf (hdb_lock_buffer, " %d", &pid);
- if (kill(pid, 0) == -1 && errno == ESRCH)
- {
- n = 0;
- }
- }
-
- /* If the process does not exist then try to remove the lock */
- if (n == 0 && unlink (lock_file) == 0)
- {
- syslog (LOG_NOTICE, "Removed stale lock on %s (pid %d)",
- dev, pid);
- continue;
- }
+ * get_pty - get a pty master/slave pair and chown the slave side
+ * to the uid given. Assumes slave_name points to >= 16 bytes of space.
+ */
+int
+get_pty(master_fdp, slave_fdp, slave_name, uid)
+ int *master_fdp;
+ int *slave_fdp;
+ char *slave_name;
+ int uid;
+{
+ int i, mfd, sfd = -1;
+ char pty_name[16];
+ struct termios tios;
- syslog (LOG_NOTICE, "Device %s is locked by pid %d", dev, pid);
- break;
- }
+#ifdef TIOCGPTN
+ /*
+ * Try the unix98 way first.
+ */
+ mfd = open("/dev/ptmx", O_RDWR);
+ if (mfd >= 0) {
+ int ptn;
+ if (ioctl(mfd, TIOCGPTN, &ptn) >= 0) {
+ slprintf(pty_name, sizeof(pty_name), "/dev/pts/%d", ptn);
+ chmod(pty_name, S_IRUSR | S_IWUSR);
+#ifdef TIOCSPTLCK
+ ptn = 0;
+ if (ioctl(mfd, TIOCSPTLCK, &ptn) < 0)
+ warn("Couldn't unlock pty slave %s: %m", pty_name);
+#endif
+ if ((sfd = open(pty_name, O_RDWR | O_NOCTTY)) < 0)
+ warn("Couldn't open pty slave %s: %m", pty_name);
+ }
+ }
+#endif /* TIOCGPTN */
+
+ if (sfd < 0) {
+ /* the old way - scan through the pty name space */
+ for (i = 0; i < 64; ++i) {
+ slprintf(pty_name, sizeof(pty_name), "/dev/pty%c%x",
+ 'p' + i / 16, i % 16);
+ mfd = open(pty_name, O_RDWR, 0);
+ if (mfd >= 0) {
+ pty_name[5] = 't';
+ sfd = open(pty_name, O_RDWR | O_NOCTTY, 0);
+ if (sfd >= 0) {
+ fchown(sfd, uid, -1);
+ fchmod(sfd, S_IRUSR | S_IWUSR);
+ break;
+ }
+ close(mfd);
+ }
+ }
+ }
+
+ if (sfd < 0)
+ return 0;
- syslog(LOG_ERR, "Can't create lock file %s: %m", lock_file);
- break;
- }
+ strlcpy(slave_name, pty_name, 16);
+ *master_fdp = mfd;
+ *slave_fdp = sfd;
+ if (tcgetattr(sfd, &tios) == 0) {
+ tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB);
+ tios.c_cflag |= CS8 | CREAD | CLOCAL;
+ tios.c_iflag = IGNPAR;
+ tios.c_oflag = 0;
+ tios.c_lflag = 0;
+ if (tcsetattr(sfd, TCSAFLUSH, &tios) < 0)
+ warn("couldn't set attributes on pty: %m");
+ } else
+ warn("couldn't get attributes on pty: %m");
- free(lock_file);
- lock_file = NULL;
- return -1;
+ return 1;
}
+/********************************************************************
+ *
+ * open_loopback - open the device we use for getting packets
+ * in demand mode. Under Linux, we use a pty master/slave pair.
+ */
+int
+open_ppp_loopback(void)
+{
+ int flags;
+
+ looped = 1;
+ if (new_style_driver) {
+ /* allocate ourselves a ppp unit */
+ if (make_ppp_unit() < 0)
+ die(1);
+ modify_flags(ppp_dev_fd, 0, SC_LOOP_TRAFFIC);
+ set_kdebugflag(kdebugflag);
+ ppp_fd = -1;
+ return ppp_dev_fd;
+ }
+
+ if (!get_pty(&master_fd, &slave_fd, loop_name, 0))
+ fatal("No free pty for loopback");
+ SYSDEBUG(("using %s for loopback", loop_name));
+
+ set_ppp_fd(slave_fd);
+
+ flags = fcntl(master_fd, F_GETFL);
+ if (flags == -1 ||
+ fcntl(master_fd, F_SETFL, flags | O_NONBLOCK) == -1)
+ warn("couldn't set master loopback to nonblock: %m");
+
+ flags = fcntl(ppp_fd, F_GETFL);
+ if (flags == -1 ||
+ fcntl(ppp_fd, F_SETFL, flags | O_NONBLOCK) == -1)
+ warn("couldn't set slave loopback to nonblock: %m");
+
+ if (ioctl(ppp_fd, TIOCSETD, &ppp_disc) < 0)
+ fatal("ioctl(TIOCSETD): %m (line %d)", __LINE__);
+/*
+ * Find out which interface we were given.
+ */
+ if (ioctl(ppp_fd, PPPIOCGUNIT, &ifunit) < 0)
+ fatal("ioctl(PPPIOCGUNIT): %m (line %d)", __LINE__);
+/*
+ * Enable debug in the driver if requested.
+ */
+ set_kdebugflag (kdebugflag);
+
+ return master_fd;
+}
+
+/********************************************************************
+ *
+ * sifnpmode - Set the mode for handling packets for a given NP.
+ */
+
+int
+sifnpmode(u, proto, mode)
+ int u;
+ int proto;
+ enum NPmode mode;
+{
+ struct npioctl npi;
+
+ npi.protocol = proto;
+ npi.mode = mode;
+ if (ioctl(ppp_dev_fd, PPPIOCSNPMODE, (caddr_t) &npi) < 0) {
+ if (! ok_error (errno))
+ error("ioctl(PPPIOCSNPMODE, %d, %d): %m", proto, mode);
+ return 0;
+ }
+ return 1;
+}
+
+\f
+/********************************************************************
+ *
+ * sipxfaddr - Config the interface IPX networknumber
+ */
+
+int sipxfaddr (int unit, unsigned long int network, unsigned char * node )
+{
+ int result = 1;
+
+#ifdef IPX_CHANGE
+ int skfd;
+ struct ifreq ifr;
+ struct sockaddr_ipx *sipx = (struct sockaddr_ipx *) &ifr.ifr_addr;
+
+ skfd = socket (AF_IPX, SOCK_DGRAM, 0);
+ if (skfd < 0) {
+ if (! ok_error (errno))
+ dbglog("socket(AF_IPX): %m (line %d)", __LINE__);
+ result = 0;
+ }
+ else {
+ memset (&ifr, '\0', sizeof (ifr));
+ strlcpy (ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
+
+ memcpy (sipx->sipx_node, node, IPX_NODE_LEN);
+ sipx->sipx_family = AF_IPX;
+ sipx->sipx_port = 0;
+ sipx->sipx_network = htonl (network);
+ sipx->sipx_type = IPX_FRAME_ETHERII;
+ sipx->sipx_action = IPX_CRTITF;
+/*
+ * Set the IPX device
+ */
+ if (ioctl(skfd, SIOCSIFADDR, (caddr_t) &ifr) < 0) {
+ result = 0;
+ if (errno != EEXIST) {
+ if (! ok_error (errno))
+ dbglog("ioctl(SIOCSIFADDR, CRTITF): %m (line %d)", __LINE__);
+ }
+ else {
+ warn("ioctl(SIOCSIFADDR, CRTITF): Address already exists");
+ }
+ }
+ close (skfd);
+ }
+#endif
+ return result;
+}
+
+/********************************************************************
+ *
+ * cipxfaddr - Clear the information for the IPX network. The IPX routes
+ * are removed and the device is no longer able to pass IPX
+ * frames.
+ */
+
+int cipxfaddr (int unit)
+{
+ int result = 1;
+
+#ifdef IPX_CHANGE
+ int skfd;
+ struct ifreq ifr;
+ struct sockaddr_ipx *sipx = (struct sockaddr_ipx *) &ifr.ifr_addr;
+
+ skfd = socket (AF_IPX, SOCK_DGRAM, 0);
+ if (skfd < 0) {
+ if (! ok_error (errno))
+ dbglog("socket(AF_IPX): %m (line %d)", __LINE__);
+ result = 0;
+ }
+ else {
+ memset (&ifr, '\0', sizeof (ifr));
+ strlcpy (ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
+
+ sipx->sipx_type = IPX_FRAME_ETHERII;
+ sipx->sipx_action = IPX_DLTITF;
+ sipx->sipx_family = AF_IPX;
+/*
+ * Set the IPX device
+ */
+ if (ioctl(skfd, SIOCSIFADDR, (caddr_t) &ifr) < 0) {
+ if (! ok_error (errno))
+ info("ioctl(SIOCSIFADDR, IPX_DLTITF): %m (line %d)", __LINE__);
+ result = 0;
+ }
+ close (skfd);
+ }
+#endif
+ return result;
+}
+
+/*
+ * Use the hostname as part of the random number seed.
+ */
+int
+get_host_seed()
+{
+ int h;
+ char *p = hostname;
+
+ h = 407;
+ for (p = hostname; *p != 0; ++p)
+ h = h * 37 + *p;
+ return h;
+}
+
+/********************************************************************
+ *
+ * sys_check_options - check the options that the user specified
+ */
+
+int
+sys_check_options(void)
+{
+#ifdef IPX_CHANGE
+/*
+ * Disable the IPX protocol if the support is not present in the kernel.
+ */
+ char *path;
+
+ if (ipxcp_protent.enabled_flag) {
+ struct stat stat_buf;
+ if ((path = path_to_procfs("/net/ipx_interface")) == 0
+ || lstat(path, &stat_buf) < 0) {
+ error("IPX support is not present in the kernel\n");
+ ipxcp_protent.enabled_flag = 0;
+ }
+ }
+#endif
+ if (demand && driver_is_old) {
+ option_error("demand dialling is not supported by kernel driver "
+ "version %d.%d.%d", driver_version, driver_modification,
+ driver_patch);
+ return 0;
+ }
+ if (multilink && !new_style_driver) {
+ warn("Warning: multilink is not supported by the kernel driver");
+ multilink = 0;
+ }
+ return 1;
+}
+
+#ifdef INET6
/*
- * unlock - remove our lockfile
- */
-
-void unlock(void)
- {
- if (lock_file)
- {
- unlink(lock_file);
- free(lock_file);
- lock_file = NULL;
- }
- }
+ * ether_to_eui64 - Convert 48-bit Ethernet address into 64-bit EUI
+ *
+ * convert the 48-bit MAC address of eth0 into EUI 64. caller also assumes
+ * that the system has a properly configured Ethernet interface for this
+ * function to return non-zero.
+ */
+int
+ether_to_eui64(eui64_t *p_eui64)
+{
+ struct ifreq ifr;
+ int skfd;
+ const unsigned char *ptr;
+
+ skfd = socket(PF_INET6, SOCK_DGRAM, 0);
+ if(skfd == -1)
+ {
+ warn("could not open IPv6 socket");
+ return 0;
+ }
+
+ strcpy(ifr.ifr_name, "eth0");
+ if(ioctl(skfd, SIOCGIFHWADDR, &ifr) < 0)
+ {
+ close(skfd);
+ warn("could not obtain hardware address for eth0");
+ return 0;
+ }
+ close(skfd);
+
+ /*
+ * And convert the EUI-48 into EUI-64, per RFC 2472 [sec 4.1]
+ */
+ ptr = ifr.ifr_hwaddr.sa_data;
+ p_eui64->e8[0] = ptr[0] | 0x02;
+ p_eui64->e8[1] = ptr[1];
+ p_eui64->e8[2] = ptr[2];
+ p_eui64->e8[3] = 0xFF;
+ p_eui64->e8[4] = 0xFE;
+ p_eui64->e8[5] = ptr[3];
+ p_eui64->e8[6] = ptr[4];
+ p_eui64->e8[7] = ptr[5];
+
+ return 1;
+}
+#endif
projects / ppp.git / blobdiff