/*
* Construct an Internet address representation.
* If the nflag has been supplied, give
* numeric value, otherwise try for symbolic name.
*/
static inline void
inetname(struct sockaddr_in *from)
{
char *cp;
static char domain[MAXHOSTNAMELEN + 1];
char name[MAXHOSTNAMELEN + 1];
static int first = 1;
const char *ina;
if (first && !nflag) {
first = 0;
if (getdomainname(domain, MAXHOSTNAMELEN) != 0)
domain[0] = 0;
}
cp = 0;
if (!nflag && from->sin_addr.s_addr != INADDR_ANY) {
if(INET_rresolve(name, sizeof(name), from, 0x4000, 0xffffffff) >= 0) {
if ((cp = strchr(name, '.')) &&
!strcmp(cp + 1, domain))
*cp = 0;
cp = (char *)name;
}
}
ina = inet_ntoa(from->sin_addr);
if (nflag)
printf(" %s", ina);
else
printf(" %s (%s)", (cp ? cp : ina), ina);
}
/* Display an Internet socket address. */
static char *
INET_sprint(struct sockaddr *sap, int numeric)
{
static char buff[128];
if (sap->sa_family == 0xFFFF || sap->sa_family == 0)
return(NLS_CATBUFF (catfd, inetSet, inet_none, "[NONE SET]", buff, 128));
if (INET_rresolve(buff, (struct sockaddr_in *) sap, numeric) != 0)
return(NULL);
return(buff);
}
/* Display an Internet socket address. */
static char *INET_sprint(struct sockaddr *sap, int numeric)
{
static char buff[128];
if (sap->sa_family == 0xFFFF || sap->sa_family == 0)
return safe_strncpy(buff, _("[NONE SET]"), sizeof(buff));
if (INET_rresolve(buff, (struct sockaddr_in *) sap, numeric,
0xffffff00) != 0)
return (NULL);
return (buff);
}
char *INET_sprintmask(const struct sockaddr_storage *sasp, int numeric,
unsigned int netmask)
{
static char buff[128];
if (sasp->ss_family == 0xFFFF || sasp->ss_family == 0)
return safe_strncpy(buff, _("[NONE SET]"), sizeof(buff));
if (INET_rresolve(buff, sizeof(buff), sasp, numeric, netmask) != 0)
return (NULL);
return (buff);
}
static void snprint_ip_port(char *ip_port, int size, struct sockaddr *addr, int port, const char *proto, int numeric)
{
const char *port_name;
#if ENABLE_FEATURE_IPV6
if (addr->sa_family == AF_INET6) {
INET6_rresolve(ip_port, size, (struct sockaddr_in6 *)addr,
(numeric & NETSTAT_NUMERIC) ? 0x0fff : 0);
} else
#endif
{
INET_rresolve(ip_port, size, (struct sockaddr_in *)addr,
0x4000 | ((numeric & NETSTAT_NUMERIC) ? 0x0fff : 0),
0xffffffff);
}
port_name = get_sname(htons(port), proto, numeric);
if ((strlen(ip_port) + strlen(port_name)) > 22)
ip_port[22 - strlen(port_name)] = '\0';
ip_port += strlen(ip_port);
strcat(ip_port, ":");
strcat(ip_port, port_name);
}
void displayroutes(int noresolve, int netstatfmt)
{
char devname[64], flags[16], sdest[16], sgw[16];
unsigned long int d, g, m;
int flgs, ref, use, metric, mtu, win, ir;
struct sockaddr_in s_addr;
struct in_addr mask;
FILE *fp = bb_xfopen("/proc/net/route", "r");
bb_printf("Kernel IP routing table\n"
"Destination Gateway Genmask"
" Flags %s Iface\n",
netstatfmt ? " MSS Window irtt" : "Metric Ref Use");
if (fscanf(fp, "%*[^\n]\n") < 0) { /* Skip the first line. */
goto ERROR; /* Empty or missing line, or read error. */
}
while (1) {
int r;
r = fscanf(fp, "%63s%lx%lx%X%d%d%d%lx%d%d%d\n",
devname, &d, &g, &flgs, &ref, &use, &metric, &m,
&mtu, &win, &ir);
if (r != 11) {
if ((r < 0) && feof(fp)) { /* EOF with no (nonspace) chars read. */
break;
}
ERROR:
bb_error_msg_and_die("fscanf");
}
if (!(flgs & RTF_UP)) { /* Skip interfaces that are down. */
continue;
}
set_flags(flags, (flgs & IPV4_MASK));
#ifdef RTF_REJECT
if (flgs & RTF_REJECT) {
flags[0] = '!';
}
#endif
memset(&s_addr, 0, sizeof(struct sockaddr_in));
s_addr.sin_family = AF_INET;
s_addr.sin_addr.s_addr = d;
INET_rresolve(sdest, sizeof(sdest), &s_addr,
(noresolve | 0x8000), m); /* Default instead of *. */
s_addr.sin_addr.s_addr = g;
INET_rresolve(sgw, sizeof(sgw), &s_addr,
(noresolve | 0x4000), m); /* Host instead of net. */
mask.s_addr = m;
bb_printf("%-16s%-16s%-16s%-6s", sdest, sgw, inet_ntoa(mask), flags);
if (netstatfmt) {
bb_printf("%5d %-5d %6d %s\n", mtu, win, ir, devname);
} else {
bb_printf("%-6d %-2d %7d %s\n", metric, ref, use, devname);
}
}
}
void displayroutes(int noresolve, int netstatfmt)
{
char buff[256];
int nl = 0;
struct in_addr dest;
struct in_addr gw;
struct in_addr mask;
int flgs, ref, use, metric, mtu, win, ir;
char flags[64];
unsigned long int d, g, m;
char sdest[16], sgw[16];
FILE *fp = bb_xfopen("/proc/net/route", "r");
if (noresolve)
noresolve = 0x0fff;
printf("Kernel IP routing table\n");
printf
("Destination Gateway Genmask Flags %s Iface\n",
netstatfmt ? " MSS Window irtt" : "Metric Ref Use");
while (fgets(buff, sizeof(buff), fp) != NULL) {
if (nl) {
int ifl = 0;
int numeric;
struct sockaddr_in s_addr;
while (buff[ifl] != ' ' && buff[ifl] != '\t' && buff[ifl] != '\0')
ifl++;
buff[ifl] = 0; /* interface */
if (sscanf(buff + ifl + 1, "%lx%lx%X%d%d%d%lx%d%d%d",
&d, &g, &flgs, &ref, &use, &metric, &m, &mtu, &win,
&ir) != 10) {
bb_error_msg_and_die("Unsuported kernel route format\n");
}
ifl = 0; /* parse flags */
if (flgs & RTF_UP) {
if (flgs & RTF_REJECT)
flags[ifl++] = '!';
else
flags[ifl++] = 'U';
if (flgs & RTF_GATEWAY)
flags[ifl++] = 'G';
if (flgs & RTF_HOST)
flags[ifl++] = 'H';
if (flgs & RTF_REINSTATE)
flags[ifl++] = 'R';
if (flgs & RTF_DYNAMIC)
flags[ifl++] = 'D';
if (flgs & RTF_MODIFIED)
flags[ifl++] = 'M';
flags[ifl] = 0;
dest.s_addr = d;
gw.s_addr = g;
mask.s_addr = m;
memset(&s_addr, 0, sizeof(struct sockaddr_in));
s_addr.sin_family = AF_INET;
s_addr.sin_addr = dest;
numeric = noresolve | 0x8000; /* default instead of * */
INET_rresolve(sdest, sizeof(sdest), &s_addr, numeric, m);
numeric = noresolve | 0x4000; /* host instead of net */
s_addr.sin_addr = gw;
INET_rresolve(sgw, sizeof(sgw), &s_addr, numeric, m);
printf("%-16s%-16s%-16s%-6s", sdest, sgw, inet_ntoa(mask),
flags);
if (netstatfmt)
printf("%5d %-5d %6d %s\n", mtu, win, ir, buff);
else
printf("%-6d %-2d %7d %s\n", metric, ref, use, buff);
}
}
nl++;
}
}