X-Git-Url: http://git.ozlabs.org/?p=ppp.git;a=blobdiff_plain;f=pppd%2Fsys-bsd.c;h=df9dfba3f11c0bcda4448bba77ec19c9fb6d82e3;hp=ffce36acfd1a377b8308a87ed7debd53302171a4;hb=1b9f7635dd45d643b2fb7cf496f67789892897c5;hpb=ce578ebd33c97f80a17e62ef283da407832688a2

diff --git a/pppd/sys-bsd.c b/pppd/sys-bsd.c
index ffce36a..df9dfba 100644
--- a/pppd/sys-bsd.c
+++ b/pppd/sys-bsd.c
@@ -19,7 +19,7 @@
  */
 
 #ifndef lint
-static char rcsid[] = "$Id: sys-bsd.c,v 1.5 1994/05/09 02:33:41 paulus Exp $";
+static char rcsid[] = "$Id: sys-bsd.c,v 1.12 1994/09/16 02:35:27 paulus Exp $";
 #endif
 
 /*
@@ -27,6 +27,7 @@ static char rcsid[] = "$Id: sys-bsd.c,v 1.5 1994/05/09 02:33:41 paulus Exp $";
  */
 
 #include <syslog.h>
+#include <termios.h>
 #include <sys/ioctl.h>
 #include <sys/types.h>
 #include <sys/socket.h>
@@ -39,11 +40,64 @@ static char rcsid[] = "$Id: sys-bsd.c,v 1.5 1994/05/09 02:33:41 paulus Exp $";
 #include <net/if_dl.h>
 #include <netinet/in.h>
 
+#if RTM_VERSION >= 3
+#include <netinet/if_ether.h>
+#endif
+
 #include "pppd.h"
 #include "ppp.h"
 
-static int initdisc = -1;		/* Initial TTY discipline */
-extern int kdebugflag;
+static int initdisc = -1;	/* Initial TTY discipline */
+static int rtm_seq;
+
+static int	restore_term;	/* 1 => we've munged the terminal */
+static struct termios inittermios; /* Initial TTY termios */
+
+/*
+ * 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));
+    }
+}
+
+/*
+ * 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()
+{
+    int s, ok;
+    struct ifreq ifr;
+
+    if ((s = socket(AF_INET, SOCK_DGRAM, 0)) < 0)
+	return 1;		/* can't tell - maybe we're not root */
+
+    strncpy(ifr.ifr_name, "ppp0", sizeof (ifr.ifr_name));
+    ok = ioctl(s, SIOCGIFFLAGS, (caddr_t) &ifr) >= 0;
+    close(s);
+
+    return ok;
+}
 
 /*
  * establish_ppp - Turn the serial port into a ppp interface.
@@ -127,6 +181,99 @@ disestablish_ppp()
 }
 
 
+/*
+ * 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.
+ *
+ * For *BSD, we assume that speed_t values numerically equal bits/second.
+ */
+set_up_tty(fd, local)
+    int fd, local;
+{
+    struct termios tios;
+
+    if (tcgetattr(fd, &tios) < 0) {
+	syslog(LOG_ERR, "tcgetattr: %m");
+	die(1);
+    }
+
+    if (!restore_term)
+	inittermios = tios;
+
+    tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB | CLOCAL);
+    if (crtscts > 0)
+	tios.c_cflag |= CRTSCTS;
+    else if (crtscts < 0)
+	tios.c_cflag &= ~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 */
+    }
+
+    if (inspeed) {
+	cfsetospeed(&tios, inspeed);
+	cfsetispeed(&tios, inspeed);
+    } else {
+	inspeed = cfgetospeed(&tios);
+	/*
+	 * We can't proceed if the serial port speed is 0,
+	 * since that implies that the serial port is disabled.
+	 */
+	if (inspeed == 0) {
+	    syslog(LOG_ERR, "Baud rate for %s is 0; need explicit baud rate",
+		   devnam);
+	    die(1);
+	}
+    }
+    baud_rate = inspeed;
+
+    if (tcsetattr(fd, TCSAFLUSH, &tios) < 0) {
+	syslog(LOG_ERR, "tcsetattr: %m");
+	die(1);
+    }
+
+    restore_term = 1;
+}
+
+/*
+ * 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;
+    }
+}
+
+/*
+ * 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);
+}
+
+
 /*
  * output - Output PPP packet.
  */
@@ -148,6 +295,27 @@ output(unit, p, len)
 }
 
 
+/*
+ * 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.
  */
@@ -176,7 +344,7 @@ read_packet(buf)
 void
 ppp_send_config(unit, mtu, asyncmap, pcomp, accomp)
     int unit, mtu;
-    u_long asyncmap;
+    uint32 asyncmap;
     int pcomp, accomp;
 {
     u_int x;
@@ -227,7 +395,7 @@ ppp_set_xaccm(unit, accm)
 void
 ppp_recv_config(unit, mru, asyncmap, pcomp, accomp)
     int unit, mru;
-    u_long asyncmap;
+    uint32 asyncmap;
     int pcomp, accomp;
 {
     int x;
@@ -251,6 +419,59 @@ ppp_recv_config(unit, mru, asyncmap, pcomp, accomp)
     }
 }
 
+/*
+ * ccp_test - ask kernel whether a given compression method
+ * is acceptable for use.
+ */
+ccp_test(unit, opt_ptr, opt_len, for_transmit)
+    int unit, opt_len, for_transmit;
+    u_char *opt_ptr;
+{
+    struct ppp_option_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");
+}
+
+/*
+ * 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(unit)
+    int unit;
+{
+    int x;
+
+    if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
+	syslog(LOG_ERR, "ioctl(PPPIOCGFLAGS): %m");
+	return 0;
+    }
+    return x & SC_DC_FERROR;
+}
+
 /*
  * sifvjcomp - config tcp header compression
  */
@@ -282,9 +503,11 @@ sifvjcomp(u, vjcomp, cidcomp, maxcid)
  */
 int
 sifup(u)
+    int u;
 {
     struct ifreq ifr;
     u_int x;
+    struct npioctl npi;
 
     strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
     if (ioctl(s, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) {
@@ -296,14 +519,23 @@ sifup(u)
 	syslog(LOG_ERR, "ioctl(SIOCSIFFLAGS): %m");
 	return 0;
     }
-    if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
-	syslog(LOG_ERR, "ioctl (PPPIOCGFLAGS): %m");
-	return 0;
-    }
-    x |= SC_ENABLE_IP;
-    if (ioctl(fd, PPPIOCSFLAGS, (caddr_t) &x) < 0) {
-	syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
-	return 0;
+    npi.protocol = PPP_IP;
+    npi.mode = NPMODE_PASS;
+    if (ioctl(fd, PPPIOCSNPMODE, &npi) < 0) {
+	if (errno != ENOTTY) {
+	    syslog(LOG_ERR, "ioctl(PPPIOCSNPMODE): %m");
+	    return 0;
+	}
+	/* for backwards compatibility */
+	if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
+	    syslog(LOG_ERR, "ioctl (PPPIOCGFLAGS): %m");
+	    return 0;
+	}
+	x |= SC_ENABLE_IP;
+	if (ioctl(fd, PPPIOCSFLAGS, (caddr_t) &x) < 0) {
+	    syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
+	    return 0;
+	}
     }
     return 1;
 }
@@ -313,22 +545,35 @@ sifup(u)
  */
 int
 sifdown(u)
+    int u;
 {
     struct ifreq ifr;
     u_int x;
     int rv;
+    struct npioctl npi;
 
     rv = 1;
-    if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
-	syslog(LOG_ERR, "ioctl (PPPIOCGFLAGS): %m");
-	rv = 0;
-    } else {
-	x &= ~SC_ENABLE_IP;
-	if (ioctl(fd, PPPIOCSFLAGS, (caddr_t) &x) < 0) {
-	    syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
+    npi.protocol = PPP_IP;
+    npi.mode = NPMODE_ERROR;
+    if (ioctl(fd, PPPIOCSNPMODE, (caddr_t) &npi) < 0) {
+	if (errno != ENOTTY) {
+	    syslog(LOG_ERR, "ioctl(PPPIOCSNPMODE): %m");
 	    rv = 0;
+	} else {
+	    /* backwards compatibility */
+	    if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
+		syslog(LOG_ERR, "ioctl (PPPIOCGFLAGS): %m");
+		rv = 0;
+	    } else {
+		x &= ~SC_ENABLE_IP;
+		if (ioctl(fd, PPPIOCSFLAGS, (caddr_t) &x) < 0) {
+		    syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
+		    rv = 0;
+		}
+	    }
 	}
     }
+
     strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
     if (ioctl(s, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) {
 	syslog(LOG_ERR, "ioctl (SIOCGIFFLAGS): %m");
@@ -357,6 +602,8 @@ sifdown(u)
  */
 int
 sifaddr(u, o, h, m)
+    int u;
+    uint32 o, h, m;
 {
     struct ifaliasreq ifra;
 
@@ -386,6 +633,8 @@ sifaddr(u, o, h, m)
  */
 int
 cifaddr(u, o, h)
+    int u;
+    uint32 o, h;
 {
     struct ifaliasreq ifra;
 
@@ -407,45 +656,177 @@ cifaddr(u, o, h)
  */
 int
 sifdefaultroute(u, g)
+    int u;
+    uint32 g;
+{
+    return dodefaultroute(g, 's');
+}
+
+/*
+ * cifdefaultroute - delete a default route through the address given.
+ */
+int
+cifdefaultroute(u, g)
+    int u;
+    uint32 g;
 {
-    struct ortentry 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 = g;
-    rt.rt_flags = RTF_GATEWAY;
-    if (ioctl(s, SIOCADDRT, &rt) < 0) {
-	syslog(LOG_ERR, "default route ioctl(SIOCADDRT): %m");
+    return dodefaultroute(g, 'c');
+}
+
+/*
+ * dodefaultroute - talk to a routing socket to add/delete a default route.
+ */
+int
+dodefaultroute(g, cmd)
+    uint32 g;
+    int cmd;
+{
+    int routes;
+    struct {
+	struct rt_msghdr	hdr;
+	struct sockaddr_in	dst;
+	struct sockaddr_in	gway;
+	struct sockaddr_in	mask;
+    } rtmsg;
+
+    if ((routes = socket(PF_ROUTE, SOCK_RAW, AF_INET)) < 0) {
+	syslog(LOG_ERR, "%cifdefaultroute: opening routing socket: %m", cmd);
+	return 0;
+    }
+
+    memset(&rtmsg, 0, sizeof(rtmsg));
+    rtmsg.hdr.rtm_type = cmd == 's'? RTM_ADD: RTM_DELETE;
+    rtmsg.hdr.rtm_flags = RTF_UP | RTF_GATEWAY;
+    rtmsg.hdr.rtm_version = RTM_VERSION;
+    rtmsg.hdr.rtm_seq = ++rtm_seq;
+    rtmsg.hdr.rtm_addrs = RTA_DST | RTA_GATEWAY | RTA_NETMASK;
+    rtmsg.dst.sin_len = sizeof(rtmsg.dst);
+    rtmsg.dst.sin_family = AF_INET;
+    rtmsg.gway.sin_len = sizeof(rtmsg.gway);
+    rtmsg.gway.sin_family = AF_INET;
+    rtmsg.gway.sin_addr.s_addr = g;
+    rtmsg.mask.sin_len = sizeof(rtmsg.dst);
+    rtmsg.mask.sin_family = AF_INET;
+
+    rtmsg.hdr.rtm_msglen = sizeof(rtmsg);
+    if (write(routes, &rtmsg, sizeof(rtmsg)) < 0) {
+	syslog(LOG_ERR, "%s default route: %m", cmd=='s'? "add": "delete");
+	close(routes);
 	return 0;
     }
+
+    close(routes);
     return 1;
 }
 
+#if RTM_VERSION >= 3
+
 /*
- * cifdefaultroute - delete a default route through the address given.
+ * sifproxyarp - Make a proxy ARP entry for the peer.
  */
+static struct {
+    struct rt_msghdr		hdr;
+    struct sockaddr_inarp	dst;
+    struct sockaddr_dl		hwa;
+    char			extra[128];
+} arpmsg;
+
+static int arpmsg_valid;
+
 int
-cifdefaultroute(u, g)
+sifproxyarp(unit, hisaddr)
+    int unit;
+    uint32 hisaddr;
+{
+    int routes;
+    int l;
+
+    /*
+     * Get the hardware address of an interface on the same subnet
+     * as our local address.
+     */
+    memset(&arpmsg, 0, sizeof(arpmsg));
+    if (!get_ether_addr(hisaddr, &arpmsg.hwa)) {
+	syslog(LOG_ERR, "Cannot determine ethernet address for proxy ARP");
+	return 0;
+    }
+
+    if ((routes = socket(PF_ROUTE, SOCK_RAW, AF_INET)) < 0) {
+	syslog(LOG_ERR, "sifproxyarp: opening routing socket: %m");
+	return 0;
+    }
+
+    arpmsg.hdr.rtm_type = RTM_ADD;
+    arpmsg.hdr.rtm_flags = RTF_ANNOUNCE | RTF_HOST | RTF_STATIC;
+    arpmsg.hdr.rtm_version = RTM_VERSION;
+    arpmsg.hdr.rtm_seq = ++rtm_seq;
+    arpmsg.hdr.rtm_addrs = RTA_DST | RTA_GATEWAY;
+    arpmsg.hdr.rtm_inits = RTV_EXPIRE;
+    arpmsg.dst.sin_len = sizeof(struct sockaddr_inarp);
+    arpmsg.dst.sin_family = AF_INET;
+    arpmsg.dst.sin_addr.s_addr = hisaddr;
+    arpmsg.dst.sin_other = SIN_PROXY;
+
+    arpmsg.hdr.rtm_msglen = (char *) &arpmsg.hwa - (char *) &arpmsg
+	+ arpmsg.hwa.sdl_len;
+    if (write(routes, &arpmsg, arpmsg.hdr.rtm_msglen) < 0) {
+	syslog(LOG_ERR, "add proxy arp entry: %m");
+	close(routes);
+	return 0;
+    }
+
+    close(routes);
+    arpmsg_valid = 1;
+    return 1;
+}
+
+/*
+ * cifproxyarp - Delete the proxy ARP entry for the peer.
+ */
+int
+cifproxyarp(unit, hisaddr)
+    int unit;
+    uint32 hisaddr;
 {
-    struct ortentry 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 = g;
-    rt.rt_flags = RTF_GATEWAY;
-    if (ioctl(s, SIOCDELRT, &rt) < 0)
-	syslog(LOG_WARNING, "default route ioctl(SIOCDELRT): %m");
+    int routes;
+
+    if (!arpmsg_valid)
+	return 0;
+    arpmsg_valid = 0;
+
+    arpmsg.hdr.rtm_type = RTM_DELETE;
+    arpmsg.hdr.rtm_seq = ++rtm_seq;
+
+    if ((routes = socket(PF_ROUTE, SOCK_RAW, AF_INET)) < 0) {
+	syslog(LOG_ERR, "sifproxyarp: opening routing socket: %m");
+	return 0;
+    }
+
+    if (write(routes, &arpmsg, arpmsg.hdr.rtm_msglen) < 0) {
+	syslog(LOG_ERR, "delete proxy arp entry: %m");
+	close(routes);
+	return 0;
+    }
+
+    close(routes);
+    return 1;
 }
 
+#else	/* RTM_VERSION */
+
 /*
  * sifproxyarp - Make a proxy ARP entry for the peer.
  */
 int
 sifproxyarp(unit, hisaddr)
     int unit;
-    u_long hisaddr;
+    uint32 hisaddr;
 {
     struct arpreq arpreq;
+    struct {
+	struct sockaddr_dl	sdl;
+	char			space[128];
+    } dls;
 
     BZERO(&arpreq, sizeof(arpreq));
 
@@ -453,11 +834,14 @@ sifproxyarp(unit, hisaddr)
      * Get the hardware address of an interface on the same subnet
      * as our local address.
      */
-    if (!get_ether_addr(hisaddr, &arpreq.arp_ha)) {
+    if (!get_ether_addr(hisaddr, &dls.sdl)) {
 	syslog(LOG_ERR, "Cannot determine ethernet address for proxy ARP");
 	return 0;
     }
 
+    arpreq.arp_ha.sa_len = sizeof(struct sockaddr);
+    arpreq.arp_ha.sa_family = AF_UNSPEC;
+    BCOPY(LLADDR(&dls.sdl), arpreq.arp_ha.sa_data, dls.sdl.sdl_alen);
     SET_SA_FAMILY(arpreq.arp_pa, AF_INET);
     ((struct sockaddr_in *) &arpreq.arp_pa)->sin_addr.s_addr = hisaddr;
     arpreq.arp_flags = ATF_PERM | ATF_PUBL;
@@ -475,7 +859,7 @@ sifproxyarp(unit, hisaddr)
 int
 cifproxyarp(unit, hisaddr)
     int unit;
-    u_long hisaddr;
+    uint32 hisaddr;
 {
     struct arpreq arpreq;
 
@@ -488,6 +872,8 @@ cifproxyarp(unit, hisaddr)
     }
     return 1;
 }
+#endif	/* RTM_VERSION */
+
 
 /*
  * get_ether_addr - get the hardware address of an interface on the
@@ -497,11 +883,11 @@ cifproxyarp(unit, hisaddr)
 
 int
 get_ether_addr(ipaddr, hwaddr)
-    u_long ipaddr;
-    struct sockaddr *hwaddr;
+    uint32 ipaddr;
+    struct sockaddr_dl *hwaddr;
 {
     struct ifreq *ifr, *ifend, *ifp;
-    u_long ina, mask;
+    uint32 ina, mask;
     struct sockaddr_dl *dla;
     struct ifreq ifreq;
     struct ifconf ifc;
@@ -562,10 +948,8 @@ get_ether_addr(ipaddr, hwaddr)
 	    /*
 	     * Found the link-level address - copy it out
 	     */
-	    dla = (struct sockaddr_dl *)&ifr->ifr_addr;
-	    hwaddr->sa_len = sizeof(struct sockaddr);
-	    hwaddr->sa_family = AF_UNSPEC;
-	    BCOPY(LLADDR(dla), hwaddr->sa_data, dla->sdl_alen);
+	    dla = (struct sockaddr_dl *) &ifr->ifr_addr;
+	    BCOPY(dla, hwaddr, dla->sdl_len);
 	    return 1;
 	}
 	ifr = (struct ifreq *) ((char *)&ifr->ifr_addr + ifr->ifr_addr.sa_len);
@@ -573,24 +957,3 @@ get_ether_addr(ipaddr, hwaddr)
 
     return 0;
 }
-
-
-/*
- * 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()
-{
-    int s, ok;
-    struct ifreq ifr;
-
-    if ((s = socket(AF_INET, SOCK_DGRAM, 0)) < 0)
-	return 1;		/* can't tell - maybe we're not root */
-
-    strncpy(ifr.ifr_name, "ppp0", sizeof (ifr.ifr_name));
-    ok = ioctl(s, SIOCGIFFLAGS, (caddr_t) &ifr) >= 0;
-    close(s);
-
-    return ok;
-}