#include <mntent.h>
#include <net/if.h>
+#include <net/if_arp.h>
#include <linux/ppp.h>
#include <linux/route.h>
#include <linux/if_ether.h>
static int initdisc = -1; /* Initial TTY discipline */
static int prev_kdebugflag = 0;
-extern int kdebugflag;
-extern u_long netmask;
-#define MAX_IFS 32
+static int restore_term; /* 1 => we've munged the terminal */
+static struct termios inittermios; /* Initial TTY termios */
+
+static int driver_version = 0;
+static int driver_modification = 0;
+static int driver_patch = 0;
-/* prototypes */
-void die __ARGS((int));
+#define MAX_IFS 32
/*
* SET_SA_FAMILY - set the sa_family field of a struct sockaddr,
memset ((char *) &(addr), '\0', sizeof(addr)); \
addr.sa_family = (family);
+/*
+ * sys_init - System-dependent initialization.
+ */
+void
+sys_init()
+{
+ openlog("pppd", LOG_PID | LOG_NDELAY, LOG_PPP);
+ setlogmask(LOG_UPTO(LOG_INFO));
+ if (debug)
+ setlogmask(LOG_UPTO(LOG_DEBUG));
+}
+
+/*
+ * note_debug_level - note a change in the debug level.
+ */
+void
+note_debug_level()
+{
+ if (debug) {
+ syslog(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 pppdisc = N_PPP;
int sig = SIGIO;
- if (ioctl(fd, PPPIOCSINPSIG, &sig) == -1) {
- syslog(LOG_ERR, "ioctl(PPPIOCSINPSIG): %m");
- die(1);
- }
-
if (ioctl(fd, TIOCEXCL, 0) < 0) {
syslog (LOG_WARNING, "ioctl(TIOCEXCL): %m");
}
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);
+
+ syslog (LOG_NOTICE, "Using version %d.%d.%d of PPP driver",
+ driver_version, driver_modification, driver_patch);
}
/*
}
}
- if (ioctl(fd, TIOCSETD, &initdisc) < 0)
- syslog(LOG_ERR, "ioctl(TIOCSETD): %m");
+ if (ioctl(fd, TIOCSETD, &initdisc) < 0)
+ syslog(LOG_ERR, "ioctl(TIOCSETD): %m");
- if (ioctl(fd, TIOCNXCL, 0) < 0)
- syslog (LOG_WARNING, "ioctl(TIOCNXCL): %m");
+ if (ioctl(fd, TIOCNXCL, 0) < 0)
+ syslog (LOG_WARNING, "ioctl(TIOCNXCL): %m");
- initdisc = -1;
+ initdisc = -1;
+ }
+}
+
+#if B9600 == 9600
+/*
+ * XXX assume speed_t values numerically equal bits per second
+ * (so we can ask for any speed).
+ */
+#define translate_speed(bps) (bps)
+#define baud_rate_of(speed) (speed)
+
+#else
+/*
+ * List of valid speeds.
+ */
+struct speed {
+ int speed_int, speed_val;
+} speeds[] = {
+#ifdef B50
+ { 50, B50 },
+#endif
+#ifdef B75
+ { 75, B75 },
+#endif
+#ifdef B110
+ { 110, B110 },
+#endif
+#ifdef B134
+ { 134, B134 },
+#endif
+#ifdef B150
+ { 150, B150 },
+#endif
+#ifdef B200
+ { 200, B200 },
+#endif
+#ifdef B300
+ { 300, B300 },
+#endif
+#ifdef B600
+ { 600, B600 },
+#endif
+#ifdef B1200
+ { 1200, B1200 },
+#endif
+#ifdef B1800
+ { 1800, B1800 },
+#endif
+#ifdef B2000
+ { 2000, B2000 },
+#endif
+#ifdef B2400
+ { 2400, B2400 },
+#endif
+#ifdef B3600
+ { 3600, B3600 },
+#endif
+#ifdef B4800
+ { 4800, B4800 },
+#endif
+#ifdef B7200
+ { 7200, B7200 },
+#endif
+#ifdef B9600
+ { 9600, B9600 },
+#endif
+#ifdef B19200
+ { 19200, B19200 },
+#endif
+#ifdef B38400
+ { 38400, B38400 },
+#endif
+#ifdef EXTA
+ { 19200, EXTA },
+#endif
+#ifdef EXTB
+ { 38400, EXTB },
+#endif
+#ifdef B57600
+ { 57600, B57600 },
+#endif
+#ifdef B115200
+ { 115200, B115200 },
+#endif
+ { 0, 0 }
+};
+
+/*
+ * Translate from bits/second to a speed_t.
+ */
+int
+translate_speed(bps)
+ int bps;
+{
+ struct speed *speedp;
+
+ if (bps == 0)
+ return 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);
+ return 0;
+}
+
+/*
+ * Translate from a speed_t to bits/second.
+ */
+int
+baud_rate_of(speed)
+ int speed;
+{
+ struct speed *speedp;
+
+ if (speed == 0)
+ return 0;
+ for (speedp = speeds; speedp->speed_int; speedp++)
+ if (speed == speedp->speed_val)
+ return speedp->speed_int;
+ return 0;
+}
+#endif
+
+/*
+ * 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.
+ */
+set_up_tty(fd, local)
+ int fd, local;
+{
+ int speed, x;
+ struct termios tios;
+
+ if (tcgetattr(fd, &tios) < 0) {
+ syslog(LOG_ERR, "tcgetattr: %m");
+ die(1);
+ }
+
+ if (!restore_term)
+ inittermios = tios;
+
+#ifdef CRTSCTS
+ tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB | CLOCAL | CRTSCTS);
+ if (crtscts == 1)
+ tios.c_cflag |= CRTSCTS;
+#else
+ tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB | CLOCAL);
+#endif /* CRTSCTS */
+
+ tios.c_cflag |= CS8 | CREAD | HUPCL;
+ if (local || !modem)
+ tios.c_cflag |= CLOCAL;
+ tios.c_iflag = IGNBRK | IGNPAR;
+ tios.c_oflag = 0;
+ tios.c_lflag = 0;
+ tios.c_cc[VMIN] = 1;
+ tios.c_cc[VTIME] = 0;
+
+ if (crtscts == 2) {
+ tios.c_iflag |= IXOFF;
+ tios.c_cc[VSTOP] = 0x13; /* DC3 = XOFF = ^S */
+ tios.c_cc[VSTART] = 0x11; /* DC1 = XON = ^Q */
+ }
+
+ speed = translate_speed(inspeed);
+ if (speed) {
+ cfsetospeed(&tios, speed);
+ cfsetispeed(&tios, speed);
+ } else {
+ speed = cfgetospeed(&tios);
+ /*
+ * We can't proceed if the serial port speed is B0,
+ * since that implies that the serial port is disabled.
+ */
+ 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);
+ }
+
+ baud_rate = baud_rate_of(speed);
+ restore_term = TRUE;
+}
+
+/*
+ * setdtr - control the DTR line on the serial port.
+ * This is called from die(), so it shouldn't call die().
+ */
+setdtr(fd, on)
+int fd, on;
+{
+ int modembits = TIOCM_DTR;
+
+ ioctl(fd, (on? TIOCMBIS: TIOCMBIC), &modembits);
+}
+
+/*
+ * restore_tty - restore the terminal to the saved settings.
+ */
+void
+restore_tty()
+{
+ if (restore_term) {
+ if (tcsetattr(fd, TCSAFLUSH, &inittermios) < 0)
+ if (errno != ENXIO)
+ syslog(LOG_WARNING, "tcsetattr: %m");
+ restore_term = 0;
}
}
}
}
+/*
+ * wait_input - wait until there is data available on fd,
+ * for the length of time specified by *timo (indefinite
+ * if timo is NULL).
+ */
+wait_input(timo)
+ struct timeval *timo;
+{
+ fd_set ready;
+ int n;
+
+ FD_ZERO(&ready);
+ FD_SET(fd, &ready);
+ n = select(fd+1, &ready, NULL, &ready, timo);
+ if (n < 0 && errno != EINTR) {
+ syslog(LOG_ERR, "select: %m");
+ die(1);
+ }
+}
+
+
/*
* read_packet - get a PPP packet from the serial device.
*/
* ppp_send_config - configure the transmit characteristics of
* the ppp interface.
*/
-void ppp_send_config (int unit,int mtu,u_long asyncmap,int pcomp,int accomp)
+void ppp_send_config (int unit,int mtu,uint32 asyncmap,int pcomp,int accomp)
{
u_int x;
struct ifreq ifr;
* ppp_recv_config - configure the receive-side characteristics of
* the ppp interface.
*/
-void ppp_recv_config (int unit,int mru,u_long asyncmap,int pcomp,int accomp)
+void ppp_recv_config (int unit,int mru,uint32 asyncmap,int pcomp,int accomp)
{
u_int x;
}
}
+/*
+ * ccp_test - ask kernel whether a given compression method
+ * is acceptable for use.
+ */
+int
+ccp_test(unit, opt_ptr, opt_len, for_transmit)
+ int unit, opt_len, for_transmit;
+ u_char *opt_ptr;
+{
+ struct ppp_comp_data data;
+
+ data.ptr = opt_ptr;
+ data.length = opt_len;
+ data.transmit = for_transmit;
+ return ioctl(fd, PPPIOCSCOMPRESS, (caddr_t) &data) >= 0;
+}
+
+/*
+ * ccp_flags_set - inform kernel about the current state of CCP.
+ */
+void
+ccp_flags_set(unit, isopen, isup)
+ int unit, isopen, isup;
+{
+ int x;
+
+ if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
+ syslog(LOG_ERR, "ioctl (PPPIOCGFLAGS): %m");
+ return;
+ }
+ x = isopen? x | SC_CCP_OPEN: x &~ SC_CCP_OPEN;
+ x = isup? x | SC_CCP_UP: x &~ SC_CCP_UP;
+ if (ioctl(fd, PPPIOCSFLAGS, (caddr_t) &x) < 0)
+ syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
+}
+
/*
* sifvjcomp - config tcp header compression
*/
* sifproxyarp - Make a proxy ARP entry for the peer.
*/
-int sifproxyarp (int unit, u_long his_adr)
+int sifproxyarp (int unit, uint32 his_adr)
{
struct arpreq arpreq;
* cifproxyarp - Delete the proxy ARP entry for the peer.
*/
-int cifproxyarp (int unit, u_long his_adr)
+int cifproxyarp (int unit, uint32 his_adr)
{
struct arpreq arpreq;
* the same subnet as ipaddr.
*/
-int get_ether_addr (u_long ipaddr, struct sockaddr *hwaddr)
+int get_ether_addr (uint32 ipaddr, struct sockaddr *hwaddr)
{
struct ifreq *ifr, *ifend, *ifp;
int i;
- u_long ina, mask;
+ uint32 ina, mask;
struct sockaddr_dl *dla;
struct ifreq ifreq;
struct ifconf ifc;
return 1;
}
+/*
+ * 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);
+ *modification = 0;
+ *patch = 0;
+
+ if (*buf == '.') {
+ ++buf;
+ *modification = (int) strtoul (buf, &buf, 10);
+ if (*buf == '.') {
+ ++buf;
+ *patch = (int) strtoul (buf, &buf, 10);
+ }
+ }
+
+ if (*buf != '\0') {
+ *version =
+ *modification =
+ *patch = 0;
+ }
+}
+
/*
* ppp_available - check whether the system has any ppp interfaces
* (in fact we check whether we can do an ioctl on ppp0).
{
int s, ok;
struct ifreq ifr;
-
+ int my_version, my_modification, my_patch;
+/*
+ * Open a socket for doing the ioctl operations.
+ */
s = socket(AF_INET, SOCK_DGRAM, 0);
if (s < 0)
- return 1; /* can't tell - maybe we're not root */
+ return 0;
- strncpy(ifr.ifr_name, "ppp0", sizeof (ifr.ifr_name));
+ strncpy (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 != 0)
+ ok = ioctl (s, SIOCGIFHWADDR, (caddr_t) &ifr) >= 0;
+
+ if (ok != 0 && ifr.ifr_hwaddr.sa_family != ARPHRD_PPP)
+ ok = 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.
+ */
+ if (ok != 0) {
+ char abBuffer [1024];
+ int size;
+
+ ifr.ifr_data = abBuffer;
+ size = ioctl (s, SIOCDEVPRIVATE, (caddr_t) &ifr);
+ ok = size >= 0;
+
+ if (ok != 0) {
+ decode_version (abBuffer,
+ &driver_version,
+ &driver_modification,
+ &driver_patch);
+ }
+ }
+
+ if (ok == 0) {
+ driver_version =
+ driver_modification =
+ driver_patch = 0;
+ }
+/*
+ * 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 == 0) {
+ fprintf(stderr, "Sorry - PPP driver version %d.%d.%d is out of date\n",
+ driver_version, driver_modification, driver_patch);
+ }
+
close(s);
-
return ok;
}
projects / ppp.git / commitdiff