#include <sys/file.h>
#include <sys/stat.h>
#include <sys/utsname.h>
+#include <sys/sysmacros.h>
#include <stdio.h>
#include <stdlib.h>
#endif
#endif /* IPX_CHANGE */
+#ifdef PPP_FILTER
+#include <net/bpf.h>
+#include <linux/filter.h>
+#endif /* PPP_FILTER */
+
#ifdef LOCKLIB
#include <sys/locks.h>
#endif
-#ifndef RTF_DEFAULT /* Normally in <linux/route.h> from <net/route.h> */
-#define RTF_DEFAULT 0
+#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 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 */
+static 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 restore_term = 0; /* 1 => we've munged the terminal */
static struct termios inittermios; /* Initial TTY termios */
+static int new_style_driver = 0;
+
static char loop_name[20];
static unsigned char inbuf[512]; /* buffer for chars read from loopback */
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 struct utsname utsname; /* for the kernel version */
static int kernel_version;
#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 get_flags (int fd);
+static void set_flags (int fd, int flags);
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 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 */
extern int hungup;
+/* 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 still_ppp(void)
{
+ if (new_style_driver)
+ return !hungup && ppp_fd >= 0;
if (!hungup || ppp_fd == slave_fd)
return 1;
if (slave_fd >= 0) {
* Functions to read and set the flags value in the device driver
*/
-static int get_flags (void)
+static int get_flags (int fd)
{
int flags;
- if (ioctl(ppp_fd, PPPIOCGFLAGS, (caddr_t) &flags) < 0) {
+ if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &flags) < 0) {
if ( ok_error (errno) )
flags = 0;
else
/********************************************************************/
-static void set_flags (int flags)
+static void set_flags (int fd, int flags)
{
SYSDEBUG ((LOG_DEBUG, "set flags = %x\n", flags));
- if (ioctl(ppp_fd, PPPIOCSFLAGS, (caddr_t) &flags) < 0) {
+ if (ioctl(fd, PPPIOCSFLAGS, (caddr_t) &flags) < 0) {
if (! ok_error (errno) )
- fatal("ioctl(PPPIOCSFLAGS, %x): %m(%d)", flags, errno);
+ fatal("ioctl(PPPIOCSFLAGS, %x): %m", flags, errno);
}
}
void sys_init(void)
{
- int osmaj, osmin, ospatch;
+ int flags;
openlog("pppd", LOG_PID | LOG_NDELAY, LOG_PPP);
setlogmask(LOG_UPTO(LOG_INFO));
if (debug)
setlogmask(LOG_UPTO(LOG_DEBUG));
-
+
+ if (new_style_driver) {
+ 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");
+ }
+
/* Get an internet socket for doing socket ioctls. */
sock_fd = socket(AF_INET, SOCK_DGRAM, 0);
- if (sock_fd < 0) {
- if ( ! ok_error ( errno ))
- fatal("Couldn't create IP socket: %m(%d)", errno);
- }
+ 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;
-
- uname(&utsname);
- osmaj = osmin = ospatch = 0;
- sscanf(utsname.release, "%d.%d.%d", &osmaj, &osmin, &ospatch);
- kernel_version = KVERSION(osmaj, osmin, ospatch);
}
/********************************************************************
/*
* Take down the device
*/
- if (if_is_up)
+ if (if_is_up) {
+ if_is_up = 0;
sifdown(0);
+ }
/*
* Delete any routes through the device.
*/
void
sys_close(void)
{
+ if (new_style_driver)
+ close(ppp_dev_fd);
if (sock_fd >= 0)
close(sock_fd);
if (slave_fd >= 0)
static int set_kdebugflag (int requested_level)
{
- if (ioctl(ppp_fd, PPPIOCSDEBUG, &requested_level) < 0) {
+ if (new_style_driver && ifunit < 0)
+ return 1;
+ if (ioctl(ppp_dev_fd, PPPIOCSDEBUG, &requested_level) < 0) {
if ( ! ok_error (errno) )
error("ioctl(PPPIOCSDEBUG): %m");
return (0);
int establish_ppp (int tty_fd)
{
int x;
-/*
- * The current PPP device will be the tty file.
- */
- set_ppp_fd (tty_fd);
+ int fd = -1;
+
/*
* Ensure that the tty device is in exclusive mode.
*/
if (ioctl(tty_fd, TIOCEXCL, 0) < 0) {
if ( ! ok_error ( errno ))
- warn("ioctl(TIOCEXCL): %m");
+ warn("Couldn't make tty exclusive: %m");
}
/*
* Demand mode - prime the old ppp device to relinquish the unit.
*/
- if (demand && ioctl(slave_fd, PPPIOCXFERUNIT, 0) < 0)
- fatal("ioctl(transfer ppp unit): %m(%d)", errno);
+ if (!new_style_driver && looped
+ && ioctl(slave_fd, PPPIOCXFERUNIT, 0) < 0) {
+ error("ioctl(transfer ppp unit): %m");
+ return -1;
+ }
/*
* Set the current tty to the PPP discpline
*/
- if (ioctl(ppp_fd, TIOCSETD, &ppp_disc) < 0) {
- if ( ! ok_error (errno) )
- fatal("ioctl(TIOCSETD): %m(%d)", errno);
+
+#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;
+ }
}
-/*
- * Find out which interface we were given.
- */
- if (ioctl(ppp_fd, PPPIOCGUNIT, &x) < 0) {
- if ( ! ok_error (errno))
+
+ if (new_style_driver) {
+ /* Open another instance of /dev/ppp and connect the channel to it */
+ int flags;
+
+ if (ioctl(tty_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;
+ }
+ 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)
+ set_flags(ppp_dev_fd, get_flags(ppp_dev_fd) & ~SC_LOOP_TRAFFIC);
+
+ 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 (tty_fd);
+ if (ioctl(tty_fd, PPPIOCGUNIT, &x) < 0) {
+ if (ok_error (errno))
+ goto err;
fatal("ioctl(PPPIOCGUNIT): %m(%d)", errno);
- }
-/*
- * Check that we got the same unit again.
- */
- if (demand) {
- if (x != ifunit)
+ }
+ /* 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(tty_fd, F_GETFL);
+ if (initfdflags == -1 ||
+ fcntl(tty_fd, F_SETFL, initfdflags | O_NONBLOCK) == -1) {
+ if ( ! ok_error (errno))
+ warn("Couldn't set device to non-blocking mode: %m");
+ }
}
- ifunit = x;
-/*
- * Enable debug in the driver if requested.
- */
- if (!demand)
+ looped = 0;
+
+ /*
+ * Enable debug in the driver if requested.
+ */
+ if (!looped)
set_kdebugflag (kdebugflag);
- set_flags (get_flags() & ~(SC_RCV_B7_0 | SC_RCV_B7_1 |
- SC_RCV_EVNP | SC_RCV_ODDP));
+ set_flags(ppp_fd, get_flags(ppp_fd) & ~(SC_RCV_B7_0 | SC_RCV_B7_1 |
+ SC_RCV_EVNP | SC_RCV_ODDP));
SYSDEBUG ((LOG_NOTICE, "Using version %d.%d.%d of PPP driver",
driver_version, driver_modification, driver_patch));
-/*
- * Fetch the initial file flags and reset blocking mode on the file.
- */
- initfdflags = fcntl(ppp_fd, F_GETFL);
-
- if (initfdflags == -1 ||
- fcntl(ppp_fd, F_SETFL, initfdflags | O_NONBLOCK) == -1) {
- if ( ! ok_error (errno))
- warn("Couldn't set device to non-blocking mode: %m");
- }
return ppp_fd;
+
+ err_close:
+ close(fd);
+ err:
+ if (ioctl(tty_fd, TIOCSETD, &tty_disc) < 0 && !ok_error(errno))
+ warn("Couldn't reset tty to normal line discipline: %m");
+ return -1;
}
/********************************************************************
void disestablish_ppp(int tty_fd)
{
- int nout;
-
if (!hungup) {
/*
* Flush the tty output buffer so that the TIOCSETD doesn't hang.
- * We may have to do this several times because the tcflush only
- * affects the serial driver, and may trigger the ppp driver to
- * supply more data to the serial driver.
*/
- do {
- if (tcflush(tty_fd, TCIOFLUSH) < 0)
- break;
- nout = 0;
- } while (ioctl(tty_fd, TIOCOUTQ, &nout) >= 0 && nout > 0);
+ if (tcflush(tty_fd, TCIOFLUSH) < 0)
+ warn("tcflush failed: %m");
/*
* Restore the previous line discipline
*/
}
}
initfdflags = -1;
+
+ if (new_style_driver) {
+ close(ppp_fd);
+ ppp_fd = -1;
+ if (!looped && ifunit >= 0 && ioctl(ppp_dev_fd, PPPIOCDETACH) < 0)
+ error("Couldn't release PPP unit: %m");
+ if (!multilink)
+ remove_fd(ppp_dev_fd);
+ }
+}
+
+/*
+ * make_ppp_unit - make a new ppp unit for ppp_dev_fd.
+ * Assumes new_style_driver.
+ */
+static int make_ppp_unit()
+{
+ int x;
+
+ 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");
+ 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)
+{
+ int flags;
+ struct ifreq ifr;
+
+ 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");
+ flags = get_flags(ppp_dev_fd);
+ flags &= ~(SC_MP_SHORTSEQ | SC_MP_XSHORTSEQ);
+ flags |= (rssn? SC_MP_SHORTSEQ: 0) | (tssn? SC_MP_XSHORTSEQ: 0);
+
+ if (mtru > 0 && mtru != link_mtu) {
+ memset(&ifr, 0, sizeof(ifr));
+ slprintf(ifr.ifr_name, sizeof(ifr.ifr_name), "ppp%d", ifunit);
+ ifr.ifr_mtu = mtru;
+ if (ioctl(sock_fd, SIOCSIFMTU, &ifr) < 0)
+ error("Couldn't set interface MTU: %m");
+ flags |= SC_MULTILINK;
+ }
+
+ set_flags(ppp_dev_fd, flags);
+
+ /* 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, mtu 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)
+{
+ if (!new_style_driver)
+ return -1;
+
+ if (ioctl(ppp_dev_fd, PPPIOCATTACH, &ifnum) < 0) {
+ if (errno == ENXIO)
+ 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);
+ set_flags(ppp_dev_fd, get_flags(ppp_dev_fd) | SC_MULTILINK);
+
+ ifunit = ifnum;
+ return 1;
}
/********************************************************************
s = NULL;
switch (~x & (SC_RCV_B7_0|SC_RCV_B7_1|SC_RCV_EVNP|SC_RCV_ODDP)) {
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:
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:
s = "all had bit 7 set to 0";
break;
void output (int unit, unsigned char *p, int len)
{
+ int fd = ppp_fd;
+ int proto;
+
if (debug)
dbglog("sent %P", p, len);
-
- if (write(ppp_fd, p, len) < 0) {
+
+ if (len < PPP_HDRLEN)
+ return;
+ if (new_style_driver) {
+ p += 2;
+ len -= 2;
+ proto = (p[0] << 8) + p[1];
+ if (ifunit >= 0 && !(proto >= 0xc000 || proto == PPP_CCPFRAG))
+ fd = ppp_dev_fd;
+ }
+ if (write(fd, p, len) < 0) {
if (errno == EWOULDBLOCK || errno == ENOBUFS
|| errno == ENXIO || errno == EIO || errno == EINTR)
warn("write: warning: %m (%d)", errno);
void wait_input(struct timeval *timo)
{
- fd_set ready;
+ fd_set ready, exc;
int n;
ready = in_fds;
- n = select(max_in_fd + 1, &ready, NULL, &ready, timo);
+ exc = in_fds;
+ n = select(max_in_fd + 1, &ready, NULL, &exc, timo);
if (n < 0 && errno != EINTR)
fatal("select: %m(%d)", errno);
}
FD_CLR(fd, &in_fds);
}
-#if 0
-/********************************************************************
- *
- * wait_loop_output - wait until there is data available on the
- * loopback, for the length of time specified by *timo (indefinite
- * if timo is NULL).
- */
-void wait_loop_output(timo)
- struct timeval *timo;
-{
- fd_set ready;
- int n;
-
- FD_ZERO(&ready);
- FD_SET(master_fd, &ready);
- n = select(master_fd + 1, &ready, NULL, &ready, timo);
- if (n < 0 && errno != EINTR)
- fatal("select: %m(%d)", errno);
-}
-
-/********************************************************************
- *
- * wait_time - wait for a given length of time or until a
- * signal is received.
- */
-
-void wait_time(timo)
- struct timeval *timo;
-{
- int n;
-
- n = select(0, NULL, NULL, NULL, timo);
- if (n < 0 && errno != EINTR)
- fatal("select: %m(%d)", errno);
-}
-#endif
/********************************************************************
*
int read_packet (unsigned char *buf)
{
- int len;
-
- len = read(ppp_fd, buf, PPP_MTU + PPP_HDRLEN);
- if (len < 0) {
- if (errno == EWOULDBLOCK || errno == EIO)
- return -1;
- fatal("read: %m(%d)", errno);
+ 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 != EIO && errno != EINTR)
+ error("read: %m");
}
- return len;
+ if (nr < 0 && new_style_driver && ifunit >= 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 != EIO && errno != EINTR)
+ error("read /dev/ppp: %m");
+ }
+ return (new_style_driver && nr > 0)? nr+2: nr;
}
/********************************************************************
get_loop_output(void)
{
int rv = 0;
- int n = read(master_fd, inbuf, sizeof(inbuf));
+ int n;
- while (n > 0) {
+ if (new_style_driver) {
+ while ((n = read_packet(inpacket_buf)) > 0)
+ if (loop_frame(inpacket_buf, n))
+ rv = 1;
+ return rv;
+ }
+
+ while ((n = read(master_fd, inbuf, sizeof(inbuf))) > 0)
if (loop_chars(inbuf, n))
rv = 1;
- n = read(master_fd, inbuf, sizeof(inbuf));
- }
if (n == 0)
fatal("eof on loopback");
if (errno != EWOULDBLOCK)
fatal("read from loopback: %m(%d)", errno);
-
+
return rv;
}
struct ifreq ifr;
SYSDEBUG ((LOG_DEBUG, "send_config: mtu = %d\n", mtu));
-/*
- * Ensure that the link is still up.
- */
- if (!still_ppp())
- return;
/*
* Set the MTU and other parameters for the ppp device
*/
strlcpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
ifr.ifr_mtu = mtu;
- if (ioctl(sock_fd, SIOCSIFMTU, (caddr_t) &ifr) < 0)
+ if (ifunit >= 0 && ioctl(sock_fd, SIOCSIFMTU, (caddr_t) &ifr) < 0)
fatal("ioctl(SIOCSIFMTU): %m(%d)", errno);
-
+ link_mtu = mtu;
+
+ if (!still_ppp())
+ return;
SYSDEBUG ((LOG_DEBUG, "send_config: asyncmap = %lx\n", asyncmap));
if (ioctl(ppp_fd, PPPIOCSASYNCMAP, (caddr_t) &asyncmap) < 0) {
if (!ok_error(errno))
return;
}
- x = get_flags();
+ x = get_flags(ppp_fd);
x = pcomp ? x | SC_COMP_PROT : x & ~SC_COMP_PROT;
x = accomp ? x | SC_COMP_AC : x & ~SC_COMP_AC;
x = sync_serial ? x | SC_SYNC : x & ~SC_SYNC;
- set_flags(x);
+ set_flags(ppp_fd, x);
}
/********************************************************************
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(%d)", errno);
void ppp_recv_config (int unit,int mru,u_int32_t asyncmap,int pcomp,int accomp)
{
- u_int x;
-
SYSDEBUG ((LOG_DEBUG, "recv_config: mru = %d\n", mru));
/*
* If we were called because the link has gone down then there is nothing
if ( ! ok_error (errno))
error("ioctl(PPPIOCSMRU): %m(%d)", errno);
}
+ if (new_style_driver && ifunit >= 0
+ && ioctl(ppp_dev_fd, PPPIOCSMRU, (caddr_t) &mru) < 0)
+ error("Couldn't set MRU in generic PPP layer: %m");
SYSDEBUG ((LOG_DEBUG, "recv_config: asyncmap = %lx\n", asyncmap));
if (ioctl(ppp_fd, PPPIOCSRASYNCMAP, (caddr_t) &asyncmap) < 0) {
if (!ok_error(errno))
error("ioctl(PPPIOCSRASYNCMAP): %m(%d)", errno);
}
-
- x = get_flags();
- x = !accomp? x | SC_REJ_COMP_AC: x &~ SC_REJ_COMP_AC;
- set_flags (x);
}
/********************************************************************
data.length = opt_len;
data.transmit = for_transmit;
- if (ioctl(ppp_fd, PPPIOCSCOMPRESS, (caddr_t) &data) >= 0)
+ if (ioctl(ppp_dev_fd, PPPIOCSCOMPRESS, (caddr_t) &data) >= 0)
return 1;
return (errno == ENOBUFS)? 0: -1;
void ccp_flags_set (int unit, int isopen, int isup)
{
if (still_ppp()) {
- int x = get_flags();
+ int x = get_flags(ppp_dev_fd);
x = isopen? x | SC_CCP_OPEN : x &~ SC_CCP_OPEN;
x = isup? x | SC_CCP_UP : x &~ SC_CCP_UP;
- set_flags (x);
+ set_flags (ppp_dev_fd, x);
}
}
+#ifdef PPP_FILTER
+/*
+ * 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 */
+
/********************************************************************
*
* get_idle_time - return how long the link has been idle.
int u;
struct ppp_idle *ip;
{
- return ioctl(ppp_fd, PPPIOCGIDLE, ip) >= 0;
+ return ioctl(ppp_dev_fd, PPPIOCGIDLE, ip) >= 0;
}
/********************************************************************
int ccp_fatal_error (int unit)
{
- int x = get_flags();
+ int x = get_flags(ppp_dev_fd);
return x & SC_DC_FERROR;
}
-/*
- * path_to_route - determine the path to the proc file system data
- */
-#define ROUTE_MAX_COLS 12
-FILE *route_fd = (FILE *) 0;
-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);
-
/********************************************************************
*
* path_to_procfs - find the path to the proc file system mount point
*/
+static char proc_path[MAXPATHLEN];
+static int proc_path_len;
-static int path_to_procfs (void)
+static char *path_to_procfs(const char *tail)
{
struct mntent *mntent;
FILE *fp;
- fp = fopen(MOUNTED, "r");
- if (fp == NULL) {
+ if (proc_path_len == 0) {
/* Default the mount location of /proc */
- strlcpy (route_buffer, "/proc", sizeof (route_buffer));
- return 1;
- }
-
- while ((mntent = getmntent(fp)) != NULL) {
- if (strcmp(mntent->mnt_type, MNTTYPE_IGNORE) == 0)
- continue;
- if (strcmp(mntent->mnt_type, "proc") == 0)
- break;
+ 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);
+ }
}
- fclose (fp);
- if (mntent == 0)
- return 0;
- strlcpy(route_buffer, mntent->mnt_dir, sizeof (route_buffer));
- return 1;
+ strlcpy(proc_path + proc_path_len, tail,
+ sizeof(proc_path) - proc_path_len);
+ return proc_path;
}
-/********************************************************************
- *
- * path_to_route - find the path to the route tables in the proc file system
+/*
+ * /proc/net/route parsing stuff.
*/
+#define ROUTE_MAX_COLS 12
+FILE *route_fd = (FILE *) 0;
+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)
-{
- if (!path_to_procfs()) {
- error("proc file system not mounted");
- return 0;
- }
- strlcat (route_buffer, "/net/route", sizeof(route_buffer));
- return (route_buffer);
-}
+static int open_route_table (void);
+static void close_route_table (void);
+static int read_route_table (struct rtentry *rt);
/********************************************************************
*
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 == NULL) {
- error("can't open %s: %m (%d)", path, errno);
+ error("can't open routing table %s: %m", path);
return 0;
}
cols[col] = strtok(p, route_delims);
if (cols[col] == NULL)
return 0; /* didn't get enough columns */
+ p = NULL;
}
- ((struct sockaddr_in *) &rt->rt_dst)->sin_addr.s_addr =
- strtoul(cols[route_dest_col], NULL, 16);
-
- ((struct sockaddr_in *) &rt->rt_gateway)->sin_addr.s_addr =
- strtoul(cols[route_gw_col], NULL, 16);
-
- ((struct sockaddr_in *) &rt->rt_genmask)->sin_addr.s_addr =
- strtoul(cols[route_mask_col], 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(cols[route_flags_col], NULL, 16);
rt->rt_dev = cols[route_dev_col];
if ((rt->rt_flags & RTF_UP) == 0)
continue;
- if (((struct sockaddr_in *) (&rt->rt_dst))->sin_addr.s_addr == 0L) {
+ if (kernel_version > KVERSION(2,1,0) && SIN_ADDR(rt->rt_genmask) != 0)
+ continue;
+ if (SIN_ADDR(rt->rt_dst) == 0L) {
result = 1;
break;
}
while (read_route_table(&rt)) {
if ((rt.rt_flags & RTF_UP) == 0 || strcmp(rt.rt_dev, ifname) == 0)
continue;
- if ((addr & ((struct sockaddr_in *)&rt.rt_genmask)->sin_addr.s_addr)
- == ((struct sockaddr_in *)&rt.rt_dst)->sin_addr.s_addr) {
+ if ((addr & SIN_ADDR(rt.rt_genmask)) == SIN_ADDR(rt.rt_dst)) {
result = 1;
break;
}
struct rtentry rt;
if (defaultroute_exists(&rt) && strcmp(rt.rt_dev, ifname) != 0) {
- struct in_addr old_gateway =
- ((struct sockaddr_in *) (&rt.rt_gateway))-> sin_addr;
+ u_int32_t old_gateway = SIN_ADDR(rt.rt_gateway);
- if (old_gateway.s_addr != gateway)
+ if (old_gateway != gateway)
error("not replacing existing default route to %s [%I]",
rt.rt_dev, old_gateway);
return 0;
if (kernel_version > KVERSION(2,1,0)) {
SET_SA_FAMILY (rt.rt_genmask, AF_INET);
- ((struct sockaddr_in *) &rt.rt_genmask)->sin_addr.s_addr = 0L;
+ SIN_ADDR(rt.rt_genmask) = 0L;
}
- ((struct sockaddr_in *) &rt.rt_gateway)->sin_addr.s_addr = gateway;
+ SIN_ADDR(rt.rt_gateway) = gateway;
- rt.rt_flags = RTF_UP | RTF_GATEWAY | RTF_DEFAULT;
+ rt.rt_flags = RTF_UP | RTF_GATEWAY;
if (ioctl(sock_fd, SIOCADDRT, &rt) < 0) {
if ( ! ok_error ( errno ))
error("default route ioctl(SIOCADDRT): %m(%d)", errno);
if (kernel_version > KVERSION(2,1,0)) {
SET_SA_FAMILY (rt.rt_genmask, AF_INET);
- ((struct sockaddr_in *) &rt.rt_genmask)->sin_addr.s_addr = 0L;
+ SIN_ADDR(rt.rt_genmask) = 0L;
}
- ((struct sockaddr_in *) &rt.rt_gateway)->sin_addr.s_addr = gateway;
+ SIN_ADDR(rt.rt_gateway) = gateway;
- rt.rt_flags = RTF_UP | RTF_GATEWAY | RTF_DEFAULT;
+ rt.rt_flags = RTF_UP | RTF_GATEWAY;
if (ioctl(sock_fd, SIOCDELRT, &rt) < 0 && errno != ESRCH) {
if (still_ppp()) {
if ( ! ok_error ( errno ))
int sifproxyarp (int unit, u_int32_t his_adr)
{
struct arpreq arpreq;
+ char *forw_path;
if (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;
+ 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
}
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);
+ }
+ }
+ }
}
return 1;
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;
+ 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));
{
struct ifreq *ifr, *ifend;
u_int32_t ina, mask;
+ char *aliasp;
struct ifreq ifreq;
struct ifconf ifc;
struct ifreq ifs[MAX_IFS];
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;
+ 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));
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);
SYSDEBUG ((LOG_DEBUG, "proxy arp: interface addr %s mask %lx",
ip_ntoa(ina), ntohl(mask)));
return 0;
strlcpy(name, ifreq.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.
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
*/
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;
/*
*/
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;
int ppp_available(void)
{
- int s, ok;
+ int s, ok, fd;
struct ifreq ifr;
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 is not loaded, or because the kernel is\n"
- "not configured for PPP. See the README.linux file in the\n"
- "ppp-2.3.7 distribution.\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))
+ return 0;
/*
* Open a socket for doing the ioctl operations.
void logwtmp (const char *line, const char *name, const char *host)
{
- int wtmp;
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
/*
* 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);
- /* we really should check for error on the write for a full disk! */
- write (wtmp, (char *)&ut, sizeof(ut));
- close (wtmp);
+ if (write (wtmp, (char *)&ut, sizeof(ut)) != sizeof(ut))
+ warn("error writing %s: %m", _PATH_WTMP);
flock(wtmp, LOCK_UN);
- }
-}
-
-#if 0
-/********************************************************************
- * Code for locking/unlocking the serial device.
- * This code is derived from chat.c.
- */
-
-#ifndef LOCK_PREFIX
-#define LOCK_PREFIX "/var/lock/LCK.."
-#endif
-
-static char *lock_file;
-
-/*
- * lock - create a lock file for the named device
- */
-
-int lock (char *dev)
-{
-#ifdef LOCKLIB
- int result;
- lock_file = strdup(dev);
- if (lock_file == NULL)
- novm("lock file name");
- result = mklock (dev, (void *) 0);
-
- if (result > 0) {
- notice("Device %s is locked by pid %d", dev, result);
- free (lock_file);
- lock_file = NULL;
- result = -1;
- }
- else {
- if (result < 0) {
- error("Can't create lock file %s", lock_file);
- free (lock_file);
- lock_file = NULL;
- result = -1;
- }
- }
- return (result);
-#else
- char hdb_lock_buffer[12];
- int fd, n;
- int pid = getpid();
- char *p;
- size_t l;
-
- p = strrchr(dev, '/');
- if (p != NULL)
- dev = ++p;
-
- l = strlen(LOCK_PREFIX) + strlen(dev) + 1;
- lock_file = malloc(l);
- if (lock_file == NULL)
- novm("lock file name");
-
- slprintf(lock_file, l, "%s%s", LOCK_PREFIX, dev);
-/*
- * 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) {
- pid = getpid();
-#ifndef PID_BINARY
- slprintf(hdb_lock_buffer, sizeof(hdb_lock_buffer), "%010d\n", pid);
- write (fd, hdb_lock_buffer, 11);
-#else
- write(fd, &pid, sizeof (pid));
-#endif
- close(fd);
- return 0;
- }
-/*
- * 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) {
- error("Can't read pid from lock file %s", lock_file);
- break;
- }
-
- /* See the process still exists. */
- if (n > 0) {
-#ifndef PID_BINARY
- hdb_lock_buffer[n] = '\0';
- sscanf (hdb_lock_buffer, " %d", &pid);
-#else
- pid = ((int *) hdb_lock_buffer)[0];
-#endif
- if (pid == 0 || pid == getpid()
- || (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) {
- notice("Removed stale lock on %s (pid %d)",
- dev, pid);
- continue;
- }
-
- notice("Device %s is locked by pid %d", dev, pid);
- break;
- }
-
- error("Can't create lock file %s: %m(%d)", lock_file, errno);
- break;
+ close (wtmp);
}
-
- free(lock_file);
- lock_file = NULL;
- return -1;
#endif
}
-/********************************************************************
- *
- * unlock - remove our lockfile
- */
-
-void unlock(void)
-{
- if (lock_file) {
-#ifdef LOCKLIB
- (void) rmlock (lock_file, (void *) 0);
-#else
- unlink(lock_file);
-#endif
- free(lock_file);
- lock_file = NULL;
- }
-}
-#endif
-
/********************************************************************
*
* sifvjcomp - config tcp header compression
int sifvjcomp (int u, int vjcomp, int cidcomp, int maxcid)
{
- u_int x = get_flags();
+ u_int x = get_flags(ppp_dev_fd);
if (vjcomp) {
- if (ioctl (ppp_fd, PPPIOCSMAXCID, (caddr_t) &maxcid) < 0) {
+ if (ioctl (ppp_dev_fd, PPPIOCSMAXCID, (caddr_t) &maxcid) < 0) {
if (! ok_error (errno))
error("ioctl(PPPIOCSMAXCID): %m(%d)", errno);
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);
+ set_flags (ppp_dev_fd, x);
return 1;
}
* sifup - Config the interface up and enable IP packets to pass.
*/
-int sifup (int u)
+int sifup(int u)
{
struct ifreq ifr;
error("ioctl(SIOCSIFFLAGS): %m(%d)", errno);
return 0;
}
- if_is_up = 1;
+ if_is_up++;
+
return 1;
}
/********************************************************************
*
- * sifdown - Config the interface down and disable IP.
+ * sifdown - Disable the indicated protocol and config the interface
+ * down if there are no remaining protocols.
*/
int sifdown (int u)
{
struct ifreq ifr;
- if_is_up = 0;
+ if (if_is_up && --if_is_up > 0)
+ return 1;
memset (&ifr, '\0', sizeof (ifr));
strlcpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
/*
* Set our IP address
*/
- ((struct sockaddr_in *) &ifr.ifr_addr)->sin_addr.s_addr = our_adr;
+ SIN_ADDR(ifr.ifr_addr) = our_adr;
if (ioctl(sock_fd, SIOCSIFADDR, (caddr_t) &ifr) < 0) {
if (errno != EEXIST) {
if (! ok_error (errno))
/*
* Set the gateway address
*/
- ((struct sockaddr_in *) &ifr.ifr_dstaddr)->sin_addr.s_addr = his_adr;
+ SIN_ADDR(ifr.ifr_dstaddr) = his_adr;
if (ioctl(sock_fd, SIOCSIFDSTADDR, (caddr_t) &ifr) < 0) {
if (! ok_error (errno))
error("ioctl(SIOCSIFDSTADDR): %m(%d)", errno);
if (kernel_version >= KVERSION(2,1,16))
net_mask = ~0L;
if (net_mask != 0) {
- ((struct sockaddr_in *) &ifr.ifr_netmask)->sin_addr.s_addr = net_mask;
+ SIN_ADDR(ifr.ifr_netmask) = net_mask;
if (ioctl(sock_fd, SIOCSIFNETMASK, (caddr_t) &ifr) < 0) {
if (! ok_error (errno))
error("ioctl(SIOCSIFNETMASK): %m(%d)", errno);
SET_SA_FAMILY (rt.rt_gateway, AF_INET);
rt.rt_dev = ifname;
- ((struct sockaddr_in *) &rt.rt_gateway)->sin_addr.s_addr = 0L;
- ((struct sockaddr_in *) &rt.rt_dst)->sin_addr.s_addr = his_adr;
+ 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);
- ((struct sockaddr_in *) &rt.rt_genmask)->sin_addr.s_addr = -1L;
+ SIN_ADDR(rt.rt_genmask) = -1L;
}
if (ioctl(sock_fd, SIOCADDRT, &rt) < 0) {
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;
}
int cifaddr (int unit, u_int32_t our_adr, u_int32_t his_adr)
{
- struct rtentry rt;
+ 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;
- ((struct sockaddr_in *) &rt.rt_gateway)->sin_addr.s_addr = 0;
- ((struct sockaddr_in *) &rt.rt_dst)->sin_addr.s_addr = his_adr;
+ 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);
- ((struct sockaddr_in *) &rt.rt_genmask)->sin_addr.s_addr = -1L;
+ SIN_ADDR(rt.rt_genmask) = -1L;
}
if (ioctl(sock_fd, SIOCDELRT, &rt) < 0 && errno != ESRCH) {
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(%d)", errno);
+ 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 (%d)", errno);
+ 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 (%d)", errno);
+ 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 (%d)", errno);
+ 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 (%d)", errno);
+ 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 (%d)", errno);
+ }
+ else {
+ warn("cif6addr: ioctl(SIOCDIFADDR): No such address");
+ }
+ return (0);
+ }
return 1;
}
+#endif /* INET6 */
/*
* get_pty - get a pty master/slave pair and chown the slave side
- * to the uid given. Assumes slave_name points to >= 12 bytes of space.
+ * to the uid given. Assumes slave_name points to >= 16 bytes of space.
*/
int
get_pty(master_fdp, slave_fdp, slave_name, uid)
char *slave_name;
int uid;
{
- int i, mfd, sfd;
- char pty_name[12];
+ int i, mfd, sfd = -1;
+ char pty_name[16];
struct termios tios;
- sfd = -1;
- 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)
- break;
- close(mfd);
+#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;
- strlcpy(slave_name, pty_name, 12);
+ strlcpy(slave_name, pty_name, 16);
*master_fdp = mfd;
*slave_fdp = sfd;
- fchown(sfd, uid, -1);
- fchmod(sfd, S_IRUSR | S_IWUSR);
if (tcgetattr(sfd, &tios) == 0) {
tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB);
tios.c_cflag |= CS8 | CREAD;
{
int flags;
+ looped = 1;
+ if (new_style_driver) {
+ /* allocate ourselves a ppp unit */
+ if (make_ppp_unit() < 0)
+ die(1);
+ set_flags(ppp_dev_fd, 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));
void
restore_loop(void)
{
+ looped = 1;
+ if (new_style_driver) {
+ set_flags(ppp_dev_fd, get_flags(ppp_dev_fd) | SC_LOOP_TRAFFIC);
+ return;
+ }
if (ppp_fd != slave_fd) {
(void) ioctl(ppp_fd, TIOCSETD, &tty_disc);
set_ppp_fd(slave_fd);
npi.protocol = proto;
npi.mode = mode;
- if (ioctl(ppp_fd, PPPIOCSNPMODE, (caddr_t) &npi) < 0) {
- if (! ok_error (errno)) {
+ if (ioctl(ppp_dev_fd, PPPIOCSNPMODE, (caddr_t) &npi) < 0) {
+ if (! ok_error (errno))
error("ioctl(PPPIOCSNPMODE, %d, %d): %m (%d)",
proto, mode, errno);
- error("ppp_fd=%d slave_fd=%d\n", ppp_fd, slave_fd);
- }
return 0;
}
return 1;
return result;
}
-#if 0
-/*
- * daemon - Detach us from controlling terminal session.
- */
-int
-daemon(nochdir, noclose)
- int nochdir, noclose;
-{
- int pid;
-
- if ((pid = fork()) < 0)
- return -1;
- if (pid != 0)
- exit(0); /* parent dies */
- setsid();
- if (!nochdir)
- chdir("/");
- if (!noclose) {
- fclose(stdin); /* don't need stdin, stdout, stderr */
- fclose(stdout);
- fclose(stderr);
- }
- return 0;
-}
-#endif
-
/*
* Use the hostname as part of the random number seed.
*/
sys_check_options(void)
{
#ifdef IPX_CHANGE
- struct stat stat_buf;
/*
* Disable the IPX protocol if the support is not present in the kernel.
- * If we disable it then ensure that IP support is enabled.
*/
- while (ipxcp_protent.enabled_flag) {
- if (path_to_procfs()) {
- strlcat (route_buffer, "/net/ipx_interface", sizeof(route_buffer));
- if (lstat (route_buffer, &stat_buf) >= 0)
- break;
+ 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;
}
- error("IPX support is not present in the kernel\n");
- ipxcp_protent.enabled_flag = 0;
- ipcp_protent.enabled_flag = 1;
- break;
}
#endif
if (demand && driver_is_old) {
driver_patch);
return 0;
}
+ if (multilink && !new_style_driver) {
+ warn("Warning: multilink is not supported by the kernel driver");
+ multilink = 0;
+ }
return 1;
}
projects / ppp.git / blobdiff