*/
#ifndef lint
-static char rcsid[] = "$Id: sys-str.c,v 1.12 1994/09/16 02:18:01 paulus Exp $";
+static char rcsid[] = "$Id: sys-str.c,v 1.21 1995/06/12 12:18:04 paulus Exp $";
#endif
/*
*/
#include <stdio.h>
+#include <stdlib.h>
#include <errno.h>
#include <syslog.h>
#include <termios.h>
#include <sys/stream.h>
#include <sys/stropts.h>
+#include <arpa/inet.h>
#include <net/if.h>
+#include <net/ppp_defs.h>
+#include <net/ppp_str.h>
#include <net/route.h>
#include <net/if_arp.h>
#include <netinet/in.h>
#include "pppd.h"
-#include "ppp.h"
-#include <net/ppp_str.h>
#ifndef ifr_mtu
#define ifr_mtu ifr_metric
static int restore_term; /* 1 => we've munged the terminal */
static struct termios inittermios; /* Initial TTY termios */
+int sockfd; /* socket for doing interface ioctls */
+static char *lock_file; /* lock file created for serial port */
+
/*
* sys_init - System-dependent initialization.
*/
setlogmask(LOG_UPTO(LOG_INFO));
if (debug)
setlogmask(LOG_UPTO(LOG_DEBUG));
+
+ /* Get an internet socket for doing socket ioctl's on. */
+ if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
+ syslog(LOG_ERR, "Couldn't create IP socket: %m");
+ die(1);
+ }
}
/*
int i;
for (i = 0; i <= 2; ++i)
- if (i != fd && i != s)
+ if (i != fd && i != sockfd)
close(i);
closed_stdio = 1;
}
syslog(LOG_WARNING, "All received characters had %s", s);
}
}
- }
- while (ioctl(fd, I_POP, 0) == 0) /* pop any we pushed */
- ;
- pushed_ppp = 0;
+ while (ioctl(fd, I_POP, 0) == 0) /* pop any we pushed */
+ ;
- for (; str_module_count > 0; str_module_count--) {
- if (ioctl(fd, I_PUSH, str_modules[str_module_count-1].modname)) {
- if (errno != ENXIO)
- syslog(LOG_WARNING, "str_restore: couldn't push module %s: %m",
- str_modules[str_module_count-1].modname);
- } else {
- MAINDEBUG((LOG_INFO, "str_restore: pushed module %s",
- str_modules[str_module_count-1].modname));
+ for (; str_module_count > 0; str_module_count--) {
+ if (ioctl(fd, I_PUSH, str_modules[str_module_count-1].modname)) {
+ if (errno != ENXIO)
+ syslog(LOG_WARNING, "Couldn't restore module %s: %m",
+ str_modules[str_module_count-1].modname);
+ } else {
+ MAINDEBUG((LOG_INFO, "str_restore: pushed module %s",
+ str_modules[str_module_count-1].modname));
+ }
}
+ pushed_ppp = 0;
}
}
if (!restore_term)
inittermios = tios;
- tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB | CLOCAL | CRTSCTS);
- if (crtscts == 1)
+ 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)
restore_tty()
{
if (restore_term) {
+ if (!default_device) {
+ /*
+ * Turn off echoing, because otherwise we can get into
+ * a loop with the tty and the modem echoing to each other.
+ * We presume we are the sole user of this tty device, so
+ * when we close it, it will revert to its defaults anyway.
+ */
+ inittermios.c_lflag &= ~(ECHO | ECHONL);
+ }
if (tcsetattr(fd, TCSAFLUSH, &inittermios) < 0)
if (errno != ENXIO)
syslog(LOG_WARNING, "tcsetattr: %m");
int len, i;
unsigned char ctlbuf[16];
- str.maxlen = MTU+DLLHEADERLEN;
+ str.maxlen = PPP_MTU + PPP_HDRLEN;
str.buf = (caddr_t) buf;
ctl.maxlen = sizeof(ctlbuf);
ctl.buf = (caddr_t) ctlbuf;
i = 0;
len = getmsg(fd, &ctl, &str, &i);
if (len < 0) {
- if (errno == EAGAIN || errno == EWOULDBLOCK) {
+ if (errno == EAGAIN || errno == EWOULDBLOCK || errno == EINTR) {
return -1;
}
syslog(LOG_ERR, "getmsg(fd) %m");
void
ppp_send_config(unit, mtu, asyncmap, pcomp, accomp)
int unit, mtu;
- uint32 asyncmap;
+ u_int32_t asyncmap;
int pcomp, accomp;
{
char c;
strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
ifr.ifr_mtu = mtu;
- if (ioctl(s, SIOCSIFMTU, (caddr_t) &ifr) < 0) {
+ if (ioctl(sockfd, SIOCSIFMTU, (caddr_t) &ifr) < 0) {
syslog(LOG_ERR, "ioctl(SIOCSIFMTU): %m");
quit();
}
void
ppp_recv_config(unit, mru, asyncmap, pcomp, accomp)
int unit, mru;
- uint32 asyncmap;
+ u_int32_t asyncmap;
int pcomp, accomp;
{
char c;
}
/*
- * sifup - Config the interface up.
+ * sifup - Config the interface up and enable IP packets to pass.
*/
int
sifup(u)
int u;
{
struct ifreq ifr;
+ struct npioctl npi;
strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
- if (ioctl(s, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) {
+ if (ioctl(sockfd, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) {
syslog(LOG_ERR, "ioctl (SIOCGIFFLAGS): %m");
return 0;
}
ifr.ifr_flags |= IFF_UP;
- if (ioctl(s, SIOCSIFFLAGS, (caddr_t) &ifr) < 0) {
+ if (ioctl(sockfd, SIOCSIFFLAGS, (caddr_t) &ifr) < 0) {
syslog(LOG_ERR, "ioctl(SIOCSIFFLAGS): %m");
return 0;
}
+ npi.protocol = PPP_IP;
+ npi.mode = NPMODE_PASS;
+ if (ioctl(fd, SIOCSETNPMODE, &npi) < 0) {
+ if (errno != ENOTTY) {
+ syslog(LOG_ERR, "ioctl(SIOCSETNPMODE): %m");
+ return 0;
+ }
+ }
return 1;
}
int u;
{
struct ifreq ifr;
+ int rv;
+ struct npioctl npi;
+
+ rv = 1;
+ npi.protocol = PPP_IP;
+ npi.mode = NPMODE_ERROR;
+ if (ioctl(fd, SIOCSETNPMODE, (caddr_t) &npi) < 0) {
+ if (errno != ENOTTY) {
+ syslog(LOG_ERR, "ioctl(SIOCSETNPMODE): %m");
+ rv = 0;
+ }
+ }
+
strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
- if (ioctl(s, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) {
+ if (ioctl(sockfd, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) {
syslog(LOG_ERR, "ioctl (SIOCGIFFLAGS): %m");
- return 0;
- }
- ifr.ifr_flags &= ~IFF_UP;
- if (ioctl(s, SIOCSIFFLAGS, (caddr_t) &ifr) < 0) {
- syslog(LOG_ERR, "ioctl(SIOCSIFFLAGS): %m");
- return 0;
+ rv = 0;
+ } else {
+ ifr.ifr_flags &= ~IFF_UP;
+ if (ioctl(sockfd, SIOCSIFFLAGS, (caddr_t) &ifr) < 0) {
+ syslog(LOG_ERR, "ioctl(SIOCSIFFLAGS): %m");
+ rv = 0;
+ }
}
- return 1;
+ return rv;
}
/*
int
sifaddr(u, o, h, m)
int u;
- uint32 o, h, m;
+ u_int32_t o, h, m;
{
int ret;
struct ifreq ifr;
strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
SET_SA_FAMILY(ifr.ifr_addr, AF_INET);
((struct sockaddr_in *) &ifr.ifr_addr)->sin_addr.s_addr = o;
- if (ioctl(s, SIOCSIFADDR, (caddr_t) &ifr) < 0) {
+ if (ioctl(sockfd, SIOCSIFADDR, (caddr_t) &ifr) < 0) {
syslog(LOG_ERR, "ioctl(SIOCSIFADDR): %m");
ret = 0;
}
((struct sockaddr_in *) &ifr.ifr_dstaddr)->sin_addr.s_addr = h;
- if (ioctl(s, SIOCSIFDSTADDR, (caddr_t) &ifr) < 0) {
+ if (ioctl(sockfd, SIOCSIFDSTADDR, (caddr_t) &ifr) < 0) {
syslog(LOG_ERR, "ioctl(SIOCSIFDSTADDR): %m");
ret = 0;
}
if (m != 0) {
((struct sockaddr_in *) &ifr.ifr_addr)->sin_addr.s_addr = m;
syslog(LOG_INFO, "Setting interface mask to %s\n", ip_ntoa(m));
- if (ioctl(s, SIOCSIFNETMASK, (caddr_t) &ifr) < 0) {
+ if (ioctl(sockfd, SIOCSIFNETMASK, (caddr_t) &ifr) < 0) {
syslog(LOG_ERR, "ioctl(SIOCSIFNETMASK): %m");
ret = 0;
}
int
cifaddr(u, o, h)
int u;
- uint32 o, h;
+ u_int32_t o, h;
{
struct rtentry rt;
SET_SA_FAMILY(rt.rt_gateway, AF_INET);
((struct sockaddr_in *) &rt.rt_gateway)->sin_addr.s_addr = o;
rt.rt_flags = RTF_HOST;
- if (ioctl(s, SIOCDELRT, (caddr_t) &rt) < 0) {
+ if (ioctl(sockfd, SIOCDELRT, (caddr_t) &rt) < 0) {
syslog(LOG_ERR, "ioctl(SIOCDELRT): %m");
return 0;
}
int
sifdefaultroute(u, g)
int u;
- uint32 g;
+ u_int32_t g;
{
struct rtentry rt;
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) {
+ if (ioctl(sockfd, SIOCADDRT, &rt) < 0) {
syslog(LOG_ERR, "default route ioctl(SIOCADDRT): %m");
return 0;
}
int
cifdefaultroute(u, g)
int u;
- uint32 g;
+ u_int32_t g;
{
struct rtentry rt;
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) {
+ if (ioctl(sockfd, SIOCDELRT, &rt) < 0) {
syslog(LOG_ERR, "default route ioctl(SIOCDELRT): %m");
return 0;
}
int
sifproxyarp(unit, hisaddr)
int unit;
- uint32 hisaddr;
+ u_int32_t hisaddr;
{
struct arpreq arpreq;
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;
- if (ioctl(s, SIOCSARP, (caddr_t)&arpreq) < 0) {
+ if (ioctl(sockfd, SIOCSARP, (caddr_t)&arpreq) < 0) {
syslog(LOG_ERR, "ioctl(SIOCSARP): %m");
return 0;
}
int
cifproxyarp(unit, hisaddr)
int unit;
- uint32 hisaddr;
+ u_int32_t hisaddr;
{
struct arpreq arpreq;
BZERO(&arpreq, sizeof(arpreq));
SET_SA_FAMILY(arpreq.arp_pa, AF_INET);
((struct sockaddr_in *) &arpreq.arp_pa)->sin_addr.s_addr = hisaddr;
- if (ioctl(s, SIOCDARP, (caddr_t)&arpreq) < 0) {
+ if (ioctl(sockfd, SIOCDARP, (caddr_t)&arpreq) < 0) {
syslog(LOG_ERR, "ioctl(SIOCDARP): %m");
return 0;
}
#include <fcntl.h>
#include <nlist.h>
#include <kvm.h>
-#include <arpa/inet.h>
/* XXX SunOS 4.1 defines this and 3.5 doesn't... */
#ifdef _nlist_h
int
get_ether_addr(ipaddr, hwaddr)
- uint32 ipaddr;
+ u_int32_t ipaddr;
struct sockaddr *hwaddr;
{
register kvm_t *kd;
struct in_ifaddr in;
} ifaddr;
#endif
- uint32 addr, mask;
+ u_int32_t addr, mask;
/* Open kernel memory for reading */
kd = kvm_open(0, 0, 0, O_RDONLY, NULL);
syslog(LOG_ERR, "error reading ifnet addr");
return 0;
}
- for ( ; addr; addr = (uint32)ifp->if_next) {
+ for ( ; addr; addr = (u_int32_t)ifp->if_next) {
if (kvm_read(kd, addr, (char *)ac, sizeof(*ac)) != sizeof(*ac)) {
syslog(LOG_ERR, "error reading ifnet");
return 0;
/* Get interface ip address */
#ifdef SUNOS4
- if (kvm_read(kd, (uint32)ifp->if_addrlist, (char *)&ifaddr,
+ if (kvm_read(kd, (u_int32_t)ifp->if_addrlist, (char *)&ifaddr,
sizeof(ifaddr)) != sizeof(ifaddr)) {
syslog(LOG_ERR, "error reading ifaddr");
return 0;
}
close(fd);
}
+
+/*
+ * 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
+ * any non-point-to-point interfaces which might appear to be on the same
+ * network as `addr'. If we find any, we OR in their netmask to the
+ * user-specified netmask.
+ */
+#define MAX_IFS 32
+
+u_int32_t
+GetMask(addr)
+ 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))
+ nmask = IN_CLASSB_NET;
+ else
+ nmask = IN_CLASSC_NET;
+ /* class D nets are disallowed by bad_ip_adrs */
+ mask = netmask | htonl(nmask);
+
+ /*
+ * Scan through the system's network interfaces.
+ */
+ ifc.ifc_len = sizeof(ifs);
+ ifc.ifc_req = ifs;
+ if (ioctl(sockfd, SIOCGIFCONF, &ifc) < 0) {
+ syslog(LOG_WARNING, "ioctl(SIOCGIFCONF): %m");
+ return mask;
+ }
+ ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
+ 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;
+ if ((ntohl(ina) & nmask) != (addr & nmask))
+ continue;
+ /*
+ * Check that the interface is up, and not point-to-point or loopback.
+ */
+ strncpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
+ if (ioctl(sockfd, SIOCGIFFLAGS, &ifreq) < 0)
+ continue;
+ if ((ifreq.ifr_flags & (IFF_UP|IFF_POINTOPOINT|IFF_LOOPBACK))
+ != IFF_UP)
+ continue;
+ /*
+ * Get its netmask and OR it into our mask.
+ */
+ if (ioctl(sockfd, SIOCGIFNETMASK, &ifreq) < 0)
+ continue;
+ mask |= ((struct sockaddr_in *)&ifreq.ifr_addr)->sin_addr.s_addr;
+ }
+
+ return mask;
+}
+
+/*
+ * Code for locking/unlocking the serial device.
+ * This code is derived from chat.c.
+ */
+
+#if defined(SUNOS) && SUNOS >= 41 && !defined(HDB)
+#define HDB 1
+#endif
+
+#ifndef LOCK_DIR
+# ifdef HDB
+# define PIDSTRING
+# define LOCK_PREFIX "/usr/spool/locks/LCK.."
+# else /* HDB */
+# define LOCK_PREFIX "/usr/spool/uucp/LCK.."
+# endif /* HDB */
+#endif /* LOCK_DIR */
+
+/*
+ * lock - create a lock file for the named device.
+ */
+int
+lock(dev)
+ char *dev;
+{
+ char hdb_lock_buffer[12];
+ int fd, pid, n;
+ char *p;
+
+ if ((p = strrchr(dev, '/')) != NULL)
+ dev = p + 1;
+ lock_file = malloc(strlen(LOCK_PREFIX) + strlen(dev) + 1);
+ if (lock_file == NULL)
+ novm("lock file name");
+ strcat(strcpy(lock_file, LOCK_PREFIX), dev);
+
+ while ((fd = open(lock_file, O_EXCL | O_CREAT | O_RDWR, 0644)) < 0) {
+ if (errno == EEXIST
+ && (fd = open(lock_file, O_RDONLY, 0)) >= 0) {
+ /* Read the lock file to find out who has the device locked */
+#ifdef PIDSTRING
+ n = read(fd, hdb_lock_buffer, 11);
+ if (n > 0) {
+ hdb_lock_buffer[n] = 0;
+ pid = atoi(hdb_lock_buffer);
+ }
+#else
+ n = read(fd, &pid, sizeof(pid));
+#endif
+ if (n <= 0) {
+ syslog(LOG_ERR, "Can't read pid from lock file %s", lock_file);
+ close(fd);
+ } else {
+ if (kill(pid, 0) == -1 && errno == ESRCH) {
+ /* pid no longer exists - remove the lock file */
+ if (unlink(lock_file) == 0) {
+ close(fd);
+ syslog(LOG_NOTICE, "Removed stale lock on %s (pid %d)",
+ dev, pid);
+ continue;
+ } else
+ syslog(LOG_WARNING, "Couldn't remove stale lock on %s",
+ dev);
+ } else
+ syslog(LOG_NOTICE, "Device %s is locked by pid %d",
+ dev, pid);
+ }
+ close(fd);
+ } else
+ syslog(LOG_ERR, "Can't create lock file %s: %m", lock_file);
+ free(lock_file);
+ lock_file = NULL;
+ return -1;
+ }
+
+#ifdef PIDSTRING
+ sprintf(hdb_lock_buffer, "%10d\n", getpid());
+ write(fd, hdb_lock_buffer, 11);
+#else
+ pid = getpid();
+ write(fd, &pid, sizeof pid);
+#endif
+
+ close(fd);
+ return 0;
+}
+
+/*
+ * unlock - remove our lockfile
+ */
+void
+unlock()
+{
+ if (lock_file) {
+ unlink(lock_file);
+ free(lock_file);
+ lock_file = NULL;
+ }
+}
+
+/*
+ * SunOS doesn't have strtoul :-(
+ */
+unsigned long
+strtoul(str, ptr, base)
+ char *str, **ptr;
+ int base;
+{
+ return (unsigned long) strtol(str, ptr, base);
+}
projects / ppp.git / blobdiff