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netstat: getopt_ulflags'isation

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This commit is contained in:
Denis Vlasenko 2006-09-22 16:02:40 +00:00
parent 01e88f0339
commit 754a88f7aa
1 changed files with 45 additions and 60 deletions
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105
networking/netstat.c
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@ -18,16 +18,17 @@
extern void displayroutes(int noresolve, int netstatfmt); extern void displayroutes(int noresolve, int netstatfmt);
#endif #endif
#define NETSTAT_CONNECTED 0x01 #define NETSTAT_CONNECTED 0x01
#define NETSTAT_LISTENING 0x02 #define NETSTAT_LISTENING 0x02
#define NETSTAT_NUMERIC 0x04 #define NETSTAT_NUMERIC 0x04
#define NETSTAT_TCP 0x10 /* Must match getopt_ulflags option string */
#define NETSTAT_UDP 0x20 #define NETSTAT_TCP 0x10
#define NETSTAT_RAW 0x40 #define NETSTAT_UDP 0x20
#define NETSTAT_UNIX 0x80 #define NETSTAT_RAW 0x40
#define NETSTAT_UNIX 0x80
#define NETSTAT_ALLPROTO (NETSTAT_TCP|NETSTAT_UDP|NETSTAT_RAW|NETSTAT_UNIX)
static int flags = NETSTAT_CONNECTED | static int flags = NETSTAT_CONNECTED | NETSTAT_ALLPROTO;
NETSTAT_TCP | NETSTAT_UDP | NETSTAT_RAW | NETSTAT_UNIX;
#define PROGNAME_WIDTHs PROGNAME_WIDTH1(PROGNAME_WIDTH) #define PROGNAME_WIDTHs PROGNAME_WIDTH1(PROGNAME_WIDTH)
#define PROGNAME_WIDTH1(s) PROGNAME_WIDTH2(s) #define PROGNAME_WIDTH1(s) PROGNAME_WIDTH2(s)
@ -165,7 +166,7 @@ static void tcp_do_one(int lnr, const char *line)
} }
if (num < 10) { if (num < 10) {
bb_error_msg("warning, got bogus tcp line."); bb_error_msg("warning, got bogus tcp line");
return; return;
} }
state_str = tcp_state[state]; state_str = tcp_state[state];
@ -236,7 +237,7 @@ static void udp_do_one(int lnr, const char *line)
} }
if (num < 10) { if (num < 10) {
bb_error_msg("warning, got bogus udp line."); bb_error_msg("warning, got bogus udp line");
return; return;
} }
switch (state) { switch (state) {
@ -330,7 +331,7 @@ static void raw_do_one(int lnr, const char *line)
} }
if (num < 10) { if (num < 10) {
bb_error_msg("warning, got bogus raw line."); bb_error_msg("warning, got bogus raw line");
return; return;
} }
state_str=itoa(state); state_str=itoa(state);
@ -383,7 +384,7 @@ static void unix_do_one(int nr, const char *line)
num = sscanf(line, "%p: %lX %lX %lX %X %X %d %s", num = sscanf(line, "%p: %lX %lX %lX %X %X %d %s",
&d, &refcnt, &proto, &unix_flags, &type, &state, &inode, path); &d, &refcnt, &proto, &unix_flags, &type, &state, &inode, path);
if (num < 6) { if (num < 6) {
bb_error_msg("warning, got bogus unix line."); bb_error_msg("warning, got bogus unix line");
return; return;
} }
if (!(has & HAS_INODE)) if (!(has & HAS_INODE))
@ -504,7 +505,7 @@ static void do_info(const char *file, const char *name, void (*proc)(int, const
if (errno != ENOENT) { if (errno != ENOENT) {
perror(file); perror(file);
} else { } else {
bb_error_msg("no support for `%s' on this system.", name); bb_error_msg("no support for `%s' on this system", name);
} }
} else { } else {
do { do {
@ -521,69 +522,53 @@ static void do_info(const char *file, const char *name, void (*proc)(int, const
int netstat_main(int argc, char **argv) int netstat_main(int argc, char **argv)
{ {
int opt; enum {
int new_flags=0; OPT_extended = 0x4,
int showroute = 0, extended = 0; OPT_showroute = 0x100,
};
unsigned long opt;
#ifdef CONFIG_FEATURE_IPV6 #ifdef CONFIG_FEATURE_IPV6
int inet=1; int inet = 1;
int inet6=1; int inet6 = 1;
#else #else
# define inet 1 # define inet 1
# define inet6 0 # define inet6 0
#endif #endif
while ((opt = getopt(argc, argv, "laenrtuwx")) != -1)
switch (opt) { /* Option string must match NETSTAT_xxx constants */
case 'l': opt = bb_getopt_ulflags(argc, argv, "laentuwxr");
flags &= ~NETSTAT_CONNECTED; if (opt & 0x1) { // -l
flags |= NETSTAT_LISTENING; flags &= ~NETSTAT_CONNECTED;
break; flags |= NETSTAT_LISTENING;
case 'a': }
flags |= NETSTAT_LISTENING | NETSTAT_CONNECTED; if (opt & 0x2) flags |= NETSTAT_LISTENING | NETSTAT_CONNECTED; // -a
break; //if (opt & 0x4) // -e
case 'n': if (opt & 0x8) flags |= NETSTAT_NUMERIC; // -n
flags |= NETSTAT_NUMERIC; //if (opt & 0x10) // -t: NETSTAT_TCP
break; //if (opt & 0x20) // -u: NETSTAT_UDP
case 'r': //if (opt & 0x40) // -w: NETSTAT_RAW
showroute = 1; //if (opt & 0x80) // -x: NETSTAT_UNIX
break; if (opt & OPT_showroute) { // -r
case 'e':
extended = 1;
break;
case 't':
new_flags |= NETSTAT_TCP;
break;
case 'u':
new_flags |= NETSTAT_UDP;
break;
case 'w':
new_flags |= NETSTAT_RAW;
break;
case 'x':
new_flags |= NETSTAT_UNIX;
break;
default:
bb_show_usage();
}
if ( showroute ) {
#ifdef CONFIG_ROUTE #ifdef CONFIG_ROUTE
displayroutes ( flags & NETSTAT_NUMERIC, !extended ); displayroutes(flags & NETSTAT_NUMERIC, !(opt & OPT_extended));
return 0; return 0;
#else #else
bb_error_msg_and_die( "-r (display routing table) is not compiled in." ); bb_error_msg_and_die("-r (display routing table) is not compiled in");
#endif #endif
} }
if (new_flags) { opt &= NETSTAT_ALLPROTO;
flags &= ~(NETSTAT_TCP|NETSTAT_UDP|NETSTAT_RAW|NETSTAT_UNIX); if (opt) {
flags |= new_flags; flags &= ~NETSTAT_ALLPROTO;
flags |= opt;
} }
if (flags&(NETSTAT_TCP|NETSTAT_UDP|NETSTAT_RAW)) { if (flags & (NETSTAT_TCP|NETSTAT_UDP|NETSTAT_RAW)) {
printf("Active Internet connections "); /* xxx */ printf("Active Internet connections "); /* xxx */
if ((flags&(NETSTAT_LISTENING|NETSTAT_CONNECTED))==(NETSTAT_LISTENING|NETSTAT_CONNECTED)) if ((flags&(NETSTAT_LISTENING|NETSTAT_CONNECTED))==(NETSTAT_LISTENING|NETSTAT_CONNECTED))
printf("(servers and established)"); printf("(servers and established)");
else { else {
if (flags&NETSTAT_LISTENING) if (flags & NETSTAT_LISTENING)
printf("(only servers)"); printf("(only servers)");
else else
printf("(w/o servers)"); printf("(w/o servers)");