#endif
#if __GLIBC__ >= 2
+#include <asm/types.h> /* glibc 2 conflicts with linux/types.h */
#include <net/if.h>
#include <net/if_arp.h>
#include <net/route.h>
#include <netinet/if_ether.h>
#else
+#include <linux/types.h>
#include <linux/if.h>
#include <linux/if_arp.h>
#include <linux/route.h>
#include <netinet/in.h>
#include <arpa/inet.h>
-#include <linux/types.h>
#include <linux/ppp_defs.h>
#include <linux/if_ppp.h>
#ifdef IPX_CHANGE
#include "ipxcp.h"
+#if __GLIBC__ >= 2 && \
+ !(defined(__powerpc__) && __GLIBC__ == 2 && __GLIBC_MINOR__ == 0)
+#include <netipx/ipx.h>
+#else
#include <linux/ipx.h>
+#endif
#endif /* IPX_CHANGE */
#ifdef LOCKLIB
static char *lock_file;
static struct utsname utsname; /* for the kernel version */
+static int kernel_version;
+#define KVERSION(j,n,p) ((j)*1000000 + (n)*1000 + (p))
#define MAX_IFS 100
#endif
static void set_ppp_fd (int new_fd)
-{
- SYSDEBUG ((LOG_DEBUG, "setting ppp_fd to %d\n", ppp_fd));
+{
+ SYSDEBUG ((LOG_DEBUG, "setting ppp_fd to %d\n", new_fd));
ppp_fd = new_fd;
}
void sys_init(void)
{
+ int osmaj, osmin, ospatch;
+
openlog("pppd", LOG_PID | LOG_NDELAY, LOG_PPP);
setlogmask(LOG_UPTO(LOG_INFO));
if (debug)
}
uname(&utsname);
+ osmaj = osmin = ospatch = 0;
+ sscanf(utsname.release, "%d.%d.%d", &osmaj, &osmin, &ospatch);
+ kernel_version = KVERSION(osmaj, osmin, ospatch);
}
/********************************************************************
* regardless of whether the modem option was specified.
*/
-void set_up_tty (int tty_fd, int local)
+void set_up_tty(int tty_fd, int local)
{
int speed;
struct termios tios;
-
+
+ setdtr(tty_fd, 1);
if (tcgetattr(tty_fd, &tios) < 0)
{
syslog(LOG_ERR, "tcgetattr: %m(%d)", errno);
restore_term = TRUE;
}
+/*
+ * hangup_modem - hang up the modem by clearing DTR.
+ */
+void hangup_modem(int ttyfd)
+{
+ setdtr(ttyfd, 0);
+}
+
/********************************************************************
*
* setdtr - control the DTR line on the serial port.
if (write(ppp_fd, p, len) < 0)
{
if (errno == EWOULDBLOCK || errno == ENOBUFS
- || errno == ENXIO || errno == EIO)
+ || errno == ENXIO || errno == EIO || errno == EINTR)
{
- syslog(LOG_WARNING, "write: warning: %m(%d)", errno);
+ syslog(LOG_WARNING, "write: warning: %m (%d)", errno);
}
else
{
- syslog(LOG_ERR, "write: %m(%d)", errno);
- die(1);
+ syslog(LOG_ERR, "write: %m (%d)", errno);
}
}
}
*/
int ccp_fatal_error (int unit)
- {
+{
int x = get_flags();
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 int path_to_procfs (void)
- {
+{
struct mntent *mntent;
FILE *fp;
- fp = fopen (MOUNTED, "r");
- if (fp != 0)
- {
- mntent = getmntent (fp);
- while (mntent != (struct mntent *) 0)
- {
- if (strcmp (mntent->mnt_type, MNTTYPE_IGNORE) != 0)
- {
- if (strcmp (mntent->mnt_type, "proc") == 0)
- {
- strncpy (route_buffer, mntent->mnt_dir,
- sizeof (route_buffer)-10);
- route_buffer [sizeof (route_buffer)-10] = '\0';
- fclose (fp);
- return 1;
- }
- }
- mntent = getmntent (fp);
- }
- fclose (fp);
- }
+ fp = fopen(MOUNTED, "r");
+ if (fp == NULL) {
+ /* Default the mount location of /proc */
+ strncpy (route_buffer, "/proc", sizeof (route_buffer)-10);
+ return 1;
+ }
- /* Default the mount location of /proc */
- strncpy (route_buffer, "/proc", sizeof (route_buffer)-10);
+ while ((mntent = getmntent(fp)) != NULL) {
+ if (strcmp(mntent->mnt_type, MNTTYPE_IGNORE) == 0)
+ continue;
+ if (strcmp(mntent->mnt_type, "proc") == 0)
+ break;
+ }
+ fclose (fp);
+ if (mntent == 0)
+ return 0;
+
+ strncpy(route_buffer, mntent->mnt_dir, sizeof (route_buffer)-10);
+ route_buffer [sizeof (route_buffer)-10] = '\0';
return 1;
- }
+}
/********************************************************************
*
*/
static char *path_to_route (void)
- {
- if (! path_to_procfs())
- {
+{
+ if (!path_to_procfs()) {
syslog (LOG_ERR, "proc file system not mounted");
return 0;
- }
+ }
strcat (route_buffer, "/net/route");
return (route_buffer);
- }
+}
/********************************************************************
*
*/
static void close_route_table (void)
- {
- if (route_fd != (FILE *) 0)
- {
+{
+ if (route_fd != (FILE *) 0) {
fclose (route_fd);
route_fd = (FILE *) 0;
- }
- }
+ }
+}
/********************************************************************
*
* open_route_table - open the interface to the route table
*/
+static char route_delims[] = " \t\n";
static int open_route_table (void)
- {
+{
char *path;
close_route_table();
path = path_to_route();
if (path == NULL)
- {
return 0;
- }
route_fd = fopen (path, "r");
- if (route_fd == (FILE *) 0)
- {
- syslog (LOG_ERR, "can not open %s: %m(%d)", path, errno);
+ if (route_fd == NULL) {
+ syslog (LOG_ERR, "can't open %s: %m (%d)", path, errno);
return 0;
- }
+ }
+
+ route_dev_col = 0; /* default to usual columns */
+ route_dest_col = 1;
+ route_gw_col = 2;
+ route_flags_col = 3;
+ route_mask_col = 7;
+ route_num_cols = 8;
+
+ /* parse header line */
+ if (fgets(route_buffer, sizeof(route_buffer), route_fd) != 0) {
+ char *p = route_buffer, *q;
+ int col;
+ for (col = 0; col < ROUTE_MAX_COLS; ++col) {
+ int used = 1;
+ if ((q = strtok(p, route_delims)) == 0)
+ break;
+ if (strcasecmp(q, "iface") == 0)
+ route_dev_col = col;
+ else if (strcasecmp(q, "destination") == 0)
+ route_dest_col = col;
+ else if (strcasecmp(q, "gateway") == 0)
+ route_gw_col = col;
+ else if (strcasecmp(q, "flags") == 0)
+ route_flags_col = col;
+ else if (strcasecmp(q, "mask") == 0)
+ route_mask_col = col;
+ else
+ used = 0;
+ if (used && col >= route_num_cols)
+ route_num_cols = col + 1;
+ p = NULL;
+ }
+ }
+
return 1;
- }
+}
/********************************************************************
*
* read_route_table - read the next entry from the route table
*/
-static int read_route_table (struct rtentry *rt)
- {
- static char delims[] = " \t\n";
- char *dev_ptr, *dst_ptr, *gw_ptr, *flag_ptr;
+static int read_route_table(struct rtentry *rt)
+{
+ char *cols[ROUTE_MAX_COLS], *p;
+ int col;
memset (rt, '\0', sizeof (struct rtentry));
- for (;;)
- {
- if (fgets (route_buffer, sizeof (route_buffer), route_fd) ==
- (char *) 0)
- {
- return 0;
- }
+ if (fgets (route_buffer, sizeof (route_buffer), route_fd) == (char *) 0)
+ return 0;
- dev_ptr = strtok (route_buffer, delims); /* interface name */
- dst_ptr = strtok (NULL, delims); /* destination address */
- gw_ptr = strtok (NULL, delims); /* gateway */
- flag_ptr = strtok (NULL, delims); /* flags */
-
- if (flag_ptr == (char *) 0) /* assume that we failed, somewhere. */
- {
- return 0;
- }
-
- /* Discard that stupid header line which should never
- * have been there in the first place !! */
- if (isxdigit (*dst_ptr) && isxdigit (*gw_ptr) && isxdigit (*flag_ptr))
- {
- break;
- }
- }
+ p = route_buffer;
+ for (col = 0; col < route_num_cols; ++col) {
+ cols[col] = strtok(p, route_delims);
+ if (cols[col] == NULL)
+ return 0; /* didn't get enough columns */
+ }
((struct sockaddr_in *) &rt->rt_dst)->sin_addr.s_addr =
- strtoul (dst_ptr, NULL, 16);
+ strtoul(cols[route_dest_col], NULL, 16);
((struct sockaddr_in *) &rt->rt_gateway)->sin_addr.s_addr =
- strtoul (gw_ptr, NULL, 16);
+ strtoul(cols[route_gw_col], NULL, 16);
+
+ ((struct sockaddr_in *) &rt->rt_genmask)->sin_addr.s_addr =
+ strtoul(cols[route_mask_col], NULL, 16);
- rt->rt_flags = (short) strtoul (flag_ptr, NULL, 16);
- rt->rt_dev = dev_ptr;
+ rt->rt_flags = (short) strtoul(cols[route_flags_col], NULL, 16);
+ rt->rt_dev = cols[route_dev_col];
return 1;
- }
+}
/********************************************************************
*
*/
static int defaultroute_exists (struct rtentry *rt)
- {
- int result = 0;
+{
+ int result = 0;
if (!open_route_table())
- {
return 0;
- }
- while (read_route_table(rt) != 0)
- {
+ while (read_route_table(rt) != 0) {
if ((rt->rt_flags & RTF_UP) == 0)
- {
continue;
- }
- if (((struct sockaddr_in *) (&rt->rt_dst))->sin_addr.s_addr == 0L)
- {
+ if (((struct sockaddr_in *) (&rt->rt_dst))->sin_addr.s_addr == 0L) {
result = 1;
break;
- }
- }
+ }
+ }
close_route_table();
return result;
- }
+}
+
+/*
+ * have_route_to - determine if the system has any route to
+ * a given IP address.
+ */
+int have_route_to(u_int32_t addr)
+{
+ struct rtentry rt;
+ int result = 0;
+
+ if (!open_route_table())
+ return -1; /* don't know */
+
+ while (read_route_table(&rt)) {
+ if ((rt.rt_flags & RTF_UP) == 0)
+ continue;
+ if ((addr & ((struct sockaddr_in *)&rt.rt_genmask)->sin_addr.s_addr)
+ == ((struct sockaddr_in *)&rt.rt_genmask)->sin_addr.s_addr) {
+ result = 1;
+ break;
+ }
+ }
+
+ close_route_table();
+ return result;
+}
/********************************************************************
*
{
struct rtentry rt;
- if (defaultroute_exists(&rt))
+ if (defaultroute_exists(&rt) && strcmp(rt.rt_dev, ifname) != 0)
{
struct in_addr old_gateway =
((struct sockaddr_in *) (&rt.rt_gateway))-> sin_addr;
{
syslog (LOG_ERR,
"not replacing existing default route to %s [%s]",
- rt.rt_dev,
- inet_ntoa (old_gateway));
+ rt.rt_dev, inet_ntoa (old_gateway));
}
return 0;
}
SET_SA_FAMILY (rt.rt_dst, AF_INET);
SET_SA_FAMILY (rt.rt_gateway, AF_INET);
- if (strcmp(utsname.release, "2.1.0") > 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;
}
SET_SA_FAMILY (rt.rt_dst, AF_INET);
SET_SA_FAMILY (rt.rt_gateway, AF_INET);
- if (strcmp(utsname.release, "2.1.0") > 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;
}
*/
int ppp_available(void)
- {
+{
int s, ok;
struct ifreq ifr;
int size;
*/
s = socket(AF_INET, SOCK_DGRAM, 0);
if (s < 0)
- {
+ {
return 0;
- }
+ }
strncpy (ifr.ifr_name, "ppp0", sizeof (ifr.ifr_name));
ok = ioctl(s, SIOCGIFFLAGS, (caddr_t) &ifr) >= 0;
* flags for the device again.
*/
if (!ok)
- {
+ {
if (ppp_registered())
- {
+ {
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)
- {
+ {
ok = ioctl (s, SIOCGIFHWADDR, (caddr_t) &ifr) >= 0;
- }
+ }
if (ok && ((ifr.ifr_hwaddr.sa_family & ~0xFF) != ARPHRD_PPP))
- {
+ {
ok = 0;
- }
+ }
if (!ok)
- {
+ {
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-2.3.3 distribution.\n";
- }
+ "ppp-2.3.6 distribution.\n";
+ }
/*
* This is the PPP device. Validate the version of the driver at this
* point to ensure that this program will work with the driver.
*/
else
- {
+ {
char abBuffer [1024];
ifr.ifr_data = abBuffer;
size = ioctl (s, SIOCGPPPVER, (caddr_t) &ifr);
- ok = size >= 0;
+ if (size < 0) {
+ syslog(LOG_ERR, "Couldn't read driver version: %m");
+ ok = 0;
+ no_ppp_msg = "Sorry, couldn't verify kernel driver version\n";
- if (ok)
- {
- decode_version (abBuffer,
- &driver_version,
- &driver_modification,
- &driver_patch);
- }
-
- if (!ok)
- {
- driver_version =
- driver_modification =
- driver_patch = 0;
- }
+ } else {
+ decode_version(abBuffer,
+ &driver_version,
+ &driver_modification,
+ &driver_patch);
/*
* Validate the version of the driver against the version that we used.
*/
- decode_version (VERSION,
- &my_version,
- &my_modification,
- &my_patch);
+ decode_version(VERSION,
+ &my_version,
+ &my_modification,
+ &my_patch);
- /* The version numbers must match */
- if (driver_version != my_version)
- {
- ok = 0;
- }
+ /* The version numbers must match */
+ if (driver_version != my_version)
+ {
+ ok = 0;
+ }
- /* The modification levels must be legal */
- if (driver_modification < my_modification)
- {
- if (driver_modification >= 2) {
- /* we can cope with 2.2.0 and above */
- driver_is_old = 1;
- } else {
- ok = 0;
+ /* The modification levels must be legal */
+ if (driver_modification < 3)
+ {
+ if (driver_modification >= 2) {
+ /* we can cope with 2.2.0 and above */
+ driver_is_old = 1;
+ } else {
+ ok = 0;
+ }
}
- }
- close (s);
- if (!ok)
- {
- sprintf (route_buffer,
- "Sorry - PPP driver version %d.%d.%d is out of date\n",
- driver_version, driver_modification, driver_patch);
+ close (s);
+ if (!ok)
+ {
+ sprintf (route_buffer,
+ "Sorry - PPP driver version %d.%d.%d is out of date\n",
+ driver_version, driver_modification, driver_patch);
- no_ppp_msg = route_buffer;
- }
- }
+ no_ppp_msg = route_buffer;
+ }
+ }
+ }
return ok;
- }
+}
/********************************************************************
*
* Set the netmask.
* For recent kernels, force the netmask to 255.255.255.255.
*/
- if (strcmp(utsname.release, "2.1.16") >= 0)
+ if (kernel_version >= KVERSION(2,1,16))
net_mask = ~0L;
if (net_mask != 0)
{
/*
* Add the device route
*/
- if (strcmp(utsname.release, "2.1.16") < 0) {
+ if (kernel_version < KVERSION(2,1,16)) {
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_dst)->sin_addr.s_addr = his_adr;
rt.rt_flags = RTF_UP | RTF_HOST;
- if (strcmp(utsname.release, "2.1.0") > 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 = -1L;
}
{
struct rtentry rt;
- if (strcmp(utsname.release, "2.1.16") < 0) {
+ if (kernel_version < KVERSION(2,1,16)) {
/*
* Delete the route through the device
*/
((struct sockaddr_in *) &rt.rt_dst)->sin_addr.s_addr = his_adr;
rt.rt_flags = RTF_UP | RTF_HOST;
- if (strcmp(utsname.release, "2.1.0") > 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 = -1L;
}
* sys_check_options - check the options that the user specified
*/
-void
+int
sys_check_options(void)
{
#ifdef IPX_CHANGE
option_error("demand dialling is not supported by kernel driver version "
"%d.%d.%d", driver_version, driver_modification,
driver_patch);
- demand = 0;
+ return 0;
}
+ return 1;
}
projects / ppp.git / blobdiff