diff options
Diffstat (limited to 'networking')
| -rw-r--r-- | networking/netstat.c | 78 |
1 files changed, 50 insertions, 28 deletions
diff --git a/networking/netstat.c b/networking/netstat.c index 3114a3902..4fd8728ce 100644 --- a/networking/netstat.c +++ b/networking/netstat.c @@ -17,16 +17,37 @@ #include "libbb.h" #include "inet_common.h" +//usage:#define netstat_trivial_usage +//usage: "[-"IF_ROUTE("r")"al] [-tuwx] [-en"IF_FEATURE_NETSTAT_WIDE("W")IF_FEATURE_NETSTAT_PRG("p")"]" +//usage:#define netstat_full_usage "\n\n" +//usage: "Display networking information\n" +//usage: "\nOptions:" +//usage: IF_ROUTE( +//usage: "\n -r Routing table" +//usage: ) +//usage: "\n -a All sockets" +//usage: "\n -l Listening sockets" +//usage: "\n Else: connected sockets" +//usage: "\n -t TCP sockets" +//usage: "\n -u UDP sockets" +//usage: "\n -w Raw sockets" +//usage: "\n -x Unix sockets" +//usage: "\n Else: all socket types" +//usage: "\n -e Other/more information" +//usage: "\n -n Don't resolve names" +//usage: IF_FEATURE_NETSTAT_WIDE( +//usage: "\n -W Wide display" +//usage: ) +//usage: IF_FEATURE_NETSTAT_PRG( +//usage: "\n -p Show PID/program name for sockets" +//usage: ) + #define NETSTAT_OPTS "laentuwx" \ IF_ROUTE( "r") \ IF_FEATURE_NETSTAT_WIDE("W") \ IF_FEATURE_NETSTAT_PRG( "p") enum { - OPTBIT_KEEP_OLD = 7, - IF_ROUTE( OPTBIT_ROUTE,) - IF_FEATURE_NETSTAT_WIDE(OPTBIT_WIDE ,) - IF_FEATURE_NETSTAT_PRG( OPTBIT_PRG ,) OPT_sock_listen = 1 << 0, // l OPT_sock_all = 1 << 1, // a OPT_extended = 1 << 2, // e @@ -35,6 +56,10 @@ enum { OPT_sock_udp = 1 << 5, // u OPT_sock_raw = 1 << 6, // w OPT_sock_unix = 1 << 7, // x + OPTBIT_x = 7, + IF_ROUTE( OPTBIT_ROUTE,) + IF_FEATURE_NETSTAT_WIDE(OPTBIT_WIDE ,) + IF_FEATURE_NETSTAT_PRG( OPTBIT_PRG ,) OPT_route = IF_ROUTE( (1 << OPTBIT_ROUTE)) + 0, // r OPT_wide = IF_FEATURE_NETSTAT_WIDE((1 << OPTBIT_WIDE )) + 0, // W OPT_prg = IF_FEATURE_NETSTAT_PRG( (1 << OPTBIT_PRG )) + 0, // p @@ -220,7 +245,7 @@ static long extract_socket_inode(const char *lname) static int FAST_FUNC file_act(const char *fileName, struct stat *statbuf UNUSED_PARAM, - void *userData, + void *pid_slash_progname, int depth UNUSED_PARAM) { char *linkname; @@ -231,7 +256,7 @@ static int FAST_FUNC file_act(const char *fileName, inode = extract_socket_inode(linkname); free(linkname); if (inode >= 0) - prg_cache_add(inode, (char *)userData); + prg_cache_add(inode, (char *)pid_slash_progname); } return TRUE; } @@ -241,16 +266,16 @@ static int FAST_FUNC dir_act(const char *fileName, void *userData UNUSED_PARAM, int depth) { - const char *shortName; - char *p, *q; + const char *pid; + char *p, *pid_slash_progname; char cmdline_buf[512]; int i; if (depth == 0) /* "/proc" itself */ return TRUE; /* continue looking one level below /proc */ - shortName = fileName + sizeof("/proc/")-1; /* point after "/proc/" */ - if (!isdigit(shortName[0])) /* skip /proc entries whic aren't processes */ + pid = fileName + sizeof("/proc/")-1; /* point after "/proc/" */ + if (!isdigit(pid[0])) /* skip /proc entries which aren't processes */ return SKIP; p = concat_path_file(fileName, "cmdline"); /* "/proc/PID/cmdline" */ @@ -259,20 +284,19 @@ static int FAST_FUNC dir_act(const char *fileName, if (i < 0) return FALSE; cmdline_buf[i] = '\0'; - q = concat_path_file(shortName, bb_basename(cmdline_buf)); /* "PID/argv0" */ /* go through all files in /proc/PID/fd */ + pid_slash_progname = concat_path_file(pid, bb_basename(cmdline_buf)); /* "PID/argv0" */ p = concat_path_file(fileName, "fd"); i = recursive_action(p, ACTION_RECURSE | ACTION_QUIET, - file_act, NULL, (void *)q, 0); - + file_act, NULL, (void *)pid_slash_progname, 0); free(p); - free(q); + free(pid_slash_progname); if (!i) - return FALSE; /* signal permissions error to caller */ + return FALSE; /* signal permissions error to caller */ - return SKIP; /* caller should not recurse further into this dir. */ + return SKIP; /* caller should not recurse further into this dir */ } static void prg_cache_load(void) @@ -624,25 +648,23 @@ int netstat_main(int argc UNUSED_PARAM, char **argv) /* Option string must match NETSTAT_xxx constants */ opt = getopt32(argv, NETSTAT_OPTS); - if (opt & 0x1) { // -l + if (opt & OPT_sock_listen) { // -l flags &= ~NETSTAT_CONNECTED; flags |= NETSTAT_LISTENING; } - if (opt & 0x2) flags |= NETSTAT_LISTENING | NETSTAT_CONNECTED; // -a - //if (opt & 0x4) // -e - if (opt & 0x8) flags |= NETSTAT_NUMERIC; // -n - //if (opt & 0x10) // -t: NETSTAT_TCP - //if (opt & 0x20) // -u: NETSTAT_UDP - //if (opt & 0x40) // -w: NETSTAT_RAW - //if (opt & 0x80) // -x: NETSTAT_UNIX - if (opt & OPT_route) { // -r + if (opt & OPT_sock_all) flags |= NETSTAT_LISTENING | NETSTAT_CONNECTED; // -a + //if (opt & OPT_extended) // -e + if (opt & OPT_noresolve) flags |= NETSTAT_NUMERIC; // -n + //if (opt & OPT_sock_tcp) // -t: NETSTAT_TCP + //if (opt & OPT_sock_udp) // -u: NETSTAT_UDP + //if (opt & OPT_sock_raw) // -w: NETSTAT_RAW + //if (opt & OPT_sock_unix) // -x: NETSTAT_UNIX #if ENABLE_ROUTE + if (opt & OPT_route) { // -r bb_displayroutes(flags & NETSTAT_NUMERIC, !(opt & OPT_extended)); return 0; -#else - bb_show_usage(); -#endif } +#endif if (opt & OPT_wide) { // -W net_conn_line = PRINT_NET_CONN_WIDE; net_conn_line_header = PRINT_NET_CONN_HEADER_WIDE; 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