*/
#ifndef lint
-static char rcsid[] = "$Id: sys-bsd.c,v 1.4 1994/04/18 04:09:27 paulus Exp $";
+static char rcsid[] = "$Id: sys-bsd.c,v 1.15 1994/10/23 11:45:47 paulus Exp $";
#endif
/*
*/
#include <syslog.h>
+#include <string.h>
+#include <termios.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/errno.h>
#include <net/if.h>
+#include <net/ppp_defs.h>
#include <net/if_ppp.h>
#include <net/route.h>
#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 */
+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.
}
+/*
+ * 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.
*/
}
+/*
+ * 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.
*/
{
int len;
- if ((len = read(fd, buf, MTU + DLLHEADERLEN)) < 0) {
- if (errno == EWOULDBLOCK) {
- MAINDEBUG((LOG_DEBUG, "read(fd): EWOULDBLOCK"));
+ if ((len = read(fd, buf, PPP_MTU + PPP_HDRLEN)) < 0) {
+ if (errno == EWOULDBLOCK || errno == EINTR) {
+ MAINDEBUG((LOG_DEBUG, "read(fd): %m"));
return -1;
}
syslog(LOG_ERR, "read(fd): %m");
void
ppp_send_config(unit, mtu, asyncmap, pcomp, accomp)
int unit, mtu;
- u_long asyncmap;
+ u_int32_t asyncmap;
int pcomp, accomp;
{
u_int x;
void
ppp_recv_config(unit, mru, asyncmap, pcomp, accomp)
int unit, mru;
- u_long asyncmap;
+ u_int32_t asyncmap;
int pcomp, accomp;
{
int x;
}
}
+/*
+ * 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
*/
/*
* sifup - Config the interface up and enable IP packets to pass.
*/
+#ifndef SC_ENABLE_IP
+#define SC_ENABLE_IP 0x100 /* compat for old versions of kernel code */
+#endif
+
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) {
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;
}
*/
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");
*/
int
sifaddr(u, o, h, m)
+ int u;
+ u_int32_t o, h, m;
{
struct ifaliasreq ifra;
*/
int
cifaddr(u, o, h)
+ int u;
+ u_int32_t o, h;
{
struct ifaliasreq ifra;
*/
int
sifdefaultroute(u, g)
+ int u;
+ u_int32_t 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, 's');
+}
+
+/*
+ * cifdefaultroute - delete a default route through the address given.
+ */
+int
+cifdefaultroute(u, g)
+ int u;
+ u_int32_t g;
+{
+ return dodefaultroute(g, 'c');
+}
+
+/*
+ * dodefaultroute - talk to a routing socket to add/delete a default route.
+ */
+int
+dodefaultroute(g, cmd)
+ u_int32_t 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;
+ u_int32_t 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;
+ 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;
+ u_int32_t hisaddr;
+{
+ 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;
+ u_int32_t hisaddr;
{
struct arpreq arpreq;
+ struct {
+ struct sockaddr_dl sdl;
+ char space[128];
+ } dls;
BZERO(&arpreq, sizeof(arpreq));
* 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;
int
cifproxyarp(unit, hisaddr)
int unit;
- u_long hisaddr;
+ u_int32_t hisaddr;
{
struct arpreq arpreq;
}
return 1;
}
+#endif /* RTM_VERSION */
+
/*
* get_ether_addr - get the hardware address of an interface on the
int
get_ether_addr(ipaddr, hwaddr)
- u_long ipaddr;
- struct sockaddr *hwaddr;
+ u_int32_t ipaddr;
+ struct sockaddr_dl *hwaddr;
{
struct ifreq *ifr, *ifend, *ifp;
- u_long ina, mask;
+ u_int32_t ina, mask;
struct sockaddr_dl *dla;
struct ifreq ifreq;
struct ifconf ifc;
* address on the same subnet as `ipaddr'.
*/
ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
- for (ifr = ifc.ifc_req; ifr < ifend; ) {
+ for (ifr = ifc.ifc_req; ifr < ifend; ifr = (struct ifreq *)
+ ((char *)&ifr->ifr_addr + ifr->ifr_addr.sa_len)) {
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));
break;
}
- ifr = (struct ifreq *) ((char *)&ifr->ifr_addr + ifr->ifr_addr.sa_len);
}
if (ifr >= ifend)
/*
* 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);
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;
-}
projects / ppp.git / blobdiff