oxmc/libgtop
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

address' and subnet' are now arrays of GLIBTOP_IFADDR_LEN u_int8_t

Browse Source 
2000-01-24  Martin Baulig  <martin@home-of-linux.org>

	* include/glibtop/netinfo.h (glibtop_netinfo): `address' and
	`subnet' are now arrays of GLIBTOP_IFADDR_LEN u_int8_t values.
	(glibtop_get_netinfo): `transport' is now `u_int64_t' and not
	`unsigned' to make it work with `GLIBTOP_TRANSPORT_ALL'.

	* include/glibtop/limits.h (GLIBTOP_IFADDR_LEN): New constant.
	This is the length of a network interface address in bytes.
This commit is contained in:
Martin Baulig
2000-01-24 01:42:32 +00:00
committed by Martin Baulig
parent e9c8125828
commit 77a1a6a43d
5 changed files with 170 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files

156
sysdeps/linux/netinfo.c
View File

@@ -31,6 +31,18 @@
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <sys/sysctl.h>
#ifndef HAVE_AFINET
#define HAVE_AFINET 1
#endif
#ifndef HAVE_AFINET6
#define HAVE_AFINET6 1
#endif
#define _PATH_PROCNET_IFINET6 "/proc/net/if_inet6"
#if !defined (_LIBC) && defined (__GNU_LIBRARY__) && __GNU_LIBRARY__ > 1
/* GNU LibC */
#include <net/if.h>
@@ -50,6 +62,7 @@
#endif
static const unsigned long _glibtop_sysdeps_netinfo =
(1L << GLIBTOP_NETINFO_TRANSPORT) +
(1L << GLIBTOP_NETINFO_IF_FLAGS) +
(1L << GLIBTOP_NETINFO_ADDRESS) +
(1L << GLIBTOP_NETINFO_SUBNET) +
@@ -65,21 +78,22 @@ glibtop_init_netinfo_s (glibtop *server)
return 0;
}
/* Provides network statistics. */
#ifdef HAVE_AFINET
int
glibtop_get_netinfo_s (glibtop *server, glibtop_netinfo *buf,
const char *interface, unsigned transport)
static int
_netinfo_ipv4 (glibtop *server, glibtop_netinfo *buf,
const char *interface)
{
int skfd;
memset (buf, 0, sizeof (glibtop_netinfo));
skfd = socket (AF_INET, SOCK_DGRAM, 0);
if (skfd) {
struct ifreq ifr;
unsigned flags;
buf->transport = GLIBTOP_TRANSPORT_IPV4;
buf->flags |= (1L << GLIBTOP_NETINFO_TRANSPORT);
strcpy (ifr.ifr_name, interface);
if (!ioctl (skfd, SIOCGIFFLAGS, &ifr)) {
buf->flags |= (1L << GLIBTOP_NETINFO_IF_FLAGS);
@@ -121,7 +135,7 @@ glibtop_get_netinfo_s (glibtop *server, glibtop_netinfo *buf,
if (!ioctl (skfd, SIOCGIFADDR, &ifr)) {
struct sockaddr_in addr =
*(struct sockaddr_in *) &ifr.ifr_addr;
buf->address = addr.sin_addr.s_addr;
memcpy (&buf->address, &addr.sin_addr.s_addr, 4);
buf->flags |= (1L << GLIBTOP_NETINFO_ADDRESS);
}
@@ -129,7 +143,7 @@ glibtop_get_netinfo_s (glibtop *server, glibtop_netinfo *buf,
if (!ioctl (skfd, SIOCGIFNETMASK, &ifr)) {
struct sockaddr_in addr =
*(struct sockaddr_in *) &ifr.ifr_addr;
buf->subnet = addr.sin_addr.s_addr;
memcpy (&buf->subnet, &addr.sin_addr.s_addr, 4);
buf->flags |= (1L << GLIBTOP_NETINFO_SUBNET);
}
@@ -144,3 +158,129 @@ glibtop_get_netinfo_s (glibtop *server, glibtop_netinfo *buf,
return 0;
}
#endif /* HAVE_AFINET */
#ifdef HAVE_AFINET6
static int
_parse_ipv6_address (const char *addr_string, u_int8_t *dest)
{
int i;
if (strlen (addr_string) != 32)
return -1;
for (i = 0; i < 8; i++) {
char c1, c2;
int d1, d2;
c1 = tolower (addr_string [(i<<1)]);
c2 = tolower (addr_string [(i<<1)+1]);
if ((c1 >= '0') && (c1 <= '9'))
d1 = c1-'0';
else if ((c1 >= 'a') && (c1 <= 'f'))
d1 = c1-'a'+10;
else
return -1;
if ((c2 >= '0') && (c2 <= '9'))
d2 = c2-'0';
else if ((c2 >= 'a') && (c2 <= 'f'))
d2 = c2-'a'+10;
else
return -1;
dest [i] = (d1 << 4) + d2;
}
return 0;
}
static int
_netinfo_ipv6 (glibtop *server, glibtop_netinfo *buf,
const char *interface)
{
FILE *f;
char addr6[40], devname[20];
struct sockaddr_in6 sap;
int plen, scope, dad_status, if_idx;
extern struct aftype inet6_aftype;
if ((f = fopen (_PATH_PROCNET_IFINET6, "r")) != NULL) {
while (fscanf (f, "%64s %02x %02x %02x %02x %20s\n",
addr6, &if_idx, &plen, &scope, &dad_status,
devname) != EOF) {
if (strcmp (devname, interface))
continue;
if (!_parse_ipv6_address (addr6, buf->address))
buf->flags |= (1L << GLIBTOP_NETINFO_ADDRESS);
break;
}
}
return 0;
}
#endif /* HAVE_AFINET6 */
/* Provides network statistics. */
int
glibtop_get_netinfo_s (glibtop *server, glibtop_netinfo *buf,
const char *interface, u_int64_t transport)
{
memset (buf, 0, sizeof (glibtop_netinfo));
if (strlen (interface) >= GLIBTOP_INTERFACE_LEN)
return -1;
/* Assume IPv4 is the standard until IPv6 becomes more popular. */
if (transport == GLIBTOP_TRANSPORT_DEFAULT)
transport = GLIBTOP_TRANSPORT_ALL;
/* Get information about all possible transport methods. */
if (transport == GLIBTOP_TRANSPORT_ALL) {
char buffer [BUFSIZ];
struct stat statb;
/* We may get a little speed improvement when we use sysctl ()
* directly, but the following piece of code seems very stable
* and reliable to me.
*
* The first stat() on "/proc/sys/net" is done to find out whether
* the kernel has sysctl support.
*
* January 23, 1999
* Martin
*/
if (!stat ("/proc/sys/net", &statb) && S_ISDIR (statb.st_mode)) {
buf->flags |= (1L << GLIBTOP_NETINFO_TRANSPORT);
sprintf (buffer, "/proc/sys/net/ipv4/conf/%s", interface);
if (!stat (buffer, &statb) && S_ISDIR (statb.st_mode))
buf->transport |= GLIBTOP_TRANSPORT_IPV4;
sprintf (buffer, "/proc/sys/net/ipv6/conf/%s", interface);
if (!stat (buffer, &statb) && S_ISDIR (statb.st_mode))
buf->transport |= GLIBTOP_TRANSPORT_IPV6;
}
}
switch (transport) {
#ifdef HAVE_AFINET
case GLIBTOP_TRANSPORT_IPV4:
return _netinfo_ipv4 (server, buf, interface);
#endif /* HAVE_AFINET */
#ifdef HAVE_AFINET6
case GLIBTOP_TRANSPORT_IPV6:
return _netinfo_ipv6 (server, buf, interface);
#endif /* HAVE_AFINET6 */
}
return 0;
}