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4437 lines
100 KiB
4437 lines
100 KiB
/*
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* ss.c "sockstat", socket statistics
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*
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* Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <syslog.h>
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#include <fcntl.h>
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#include <sys/ioctl.h>
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#include <sys/socket.h>
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#include <sys/uio.h>
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#include <netinet/in.h>
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#include <string.h>
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#include <errno.h>
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#include <netdb.h>
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#include <arpa/inet.h>
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#include <dirent.h>
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#include <fnmatch.h>
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#include <getopt.h>
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#include <stdbool.h>
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#include <limits.h>
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#include "utils.h"
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#include "rt_names.h"
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#include "ll_map.h"
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#include "libnetlink.h"
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#include "namespace.h"
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#include "SNAPSHOT.h"
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#include <linux/tcp.h>
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#include <linux/sock_diag.h>
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#include <linux/inet_diag.h>
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#include <linux/unix_diag.h>
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#include <linux/netdevice.h> /* for MAX_ADDR_LEN */
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#include <linux/filter.h>
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#include <linux/packet_diag.h>
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#include <linux/netlink_diag.h>
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#include <linux/sctp.h>
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#define MAGIC_SEQ 123456
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#define DIAG_REQUEST(_req, _r) \
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struct { \
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struct nlmsghdr nlh; \
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_r; \
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} _req = { \
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.nlh = { \
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.nlmsg_type = SOCK_DIAG_BY_FAMILY, \
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.nlmsg_flags = NLM_F_ROOT|NLM_F_MATCH|NLM_F_REQUEST,\
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.nlmsg_seq = MAGIC_SEQ, \
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.nlmsg_len = sizeof(_req), \
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}, \
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}
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#if HAVE_SELINUX
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#include <selinux/selinux.h>
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#else
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/* Stubs for SELinux functions */
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static int is_selinux_enabled(void)
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{
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return -1;
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}
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static int getpidcon(pid_t pid, char **context)
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{
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*context = NULL;
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return -1;
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}
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static int getfilecon(char *path, char **context)
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{
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*context = NULL;
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return -1;
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}
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static int security_get_initial_context(char *name, char **context)
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{
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*context = NULL;
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return -1;
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}
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#endif
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int resolve_services = 1;
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int preferred_family = AF_UNSPEC;
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int show_options;
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int show_details;
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int show_users;
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int show_mem;
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int show_tcpinfo;
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int show_bpf;
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int show_proc_ctx;
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int show_sock_ctx;
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int show_header = 1;
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int follow_events;
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int sctp_ino;
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int netid_width;
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int state_width;
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int addr_width;
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int serv_width;
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char *odd_width_pad = "";
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static const char *TCP_PROTO = "tcp";
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static const char *SCTP_PROTO = "sctp";
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static const char *UDP_PROTO = "udp";
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static const char *RAW_PROTO = "raw";
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static const char *dg_proto;
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enum {
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TCP_DB,
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DCCP_DB,
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UDP_DB,
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RAW_DB,
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UNIX_DG_DB,
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UNIX_ST_DB,
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UNIX_SQ_DB,
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PACKET_DG_DB,
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PACKET_R_DB,
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NETLINK_DB,
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SCTP_DB,
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MAX_DB
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};
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#define PACKET_DBM ((1<<PACKET_DG_DB)|(1<<PACKET_R_DB))
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#define UNIX_DBM ((1<<UNIX_DG_DB)|(1<<UNIX_ST_DB)|(1<<UNIX_SQ_DB))
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#define ALL_DB ((1<<MAX_DB)-1)
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#define INET_L4_DBM ((1<<TCP_DB)|(1<<UDP_DB)|(1<<DCCP_DB)|(1<<SCTP_DB))
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#define INET_DBM (INET_L4_DBM | (1<<RAW_DB))
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enum {
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SS_UNKNOWN,
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SS_ESTABLISHED,
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SS_SYN_SENT,
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SS_SYN_RECV,
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SS_FIN_WAIT1,
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SS_FIN_WAIT2,
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SS_TIME_WAIT,
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SS_CLOSE,
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SS_CLOSE_WAIT,
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SS_LAST_ACK,
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SS_LISTEN,
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SS_CLOSING,
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SS_MAX
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};
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enum {
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SCTP_STATE_CLOSED = 0,
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SCTP_STATE_COOKIE_WAIT = 1,
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SCTP_STATE_COOKIE_ECHOED = 2,
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SCTP_STATE_ESTABLISHED = 3,
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SCTP_STATE_SHUTDOWN_PENDING = 4,
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SCTP_STATE_SHUTDOWN_SENT = 5,
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SCTP_STATE_SHUTDOWN_RECEIVED = 6,
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SCTP_STATE_SHUTDOWN_ACK_SENT = 7,
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};
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#define SS_ALL ((1 << SS_MAX) - 1)
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#define SS_CONN (SS_ALL & ~((1<<SS_LISTEN)|(1<<SS_CLOSE)|(1<<SS_TIME_WAIT)|(1<<SS_SYN_RECV)))
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#include "ssfilter.h"
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struct filter {
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int dbs;
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int states;
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int families;
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struct ssfilter *f;
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bool kill;
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};
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static const struct filter default_dbs[MAX_DB] = {
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[TCP_DB] = {
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.states = SS_CONN,
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.families = (1 << AF_INET) | (1 << AF_INET6),
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},
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[DCCP_DB] = {
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.states = SS_CONN,
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.families = (1 << AF_INET) | (1 << AF_INET6),
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},
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[UDP_DB] = {
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.states = (1 << SS_ESTABLISHED),
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.families = (1 << AF_INET) | (1 << AF_INET6),
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},
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[RAW_DB] = {
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.states = (1 << SS_ESTABLISHED),
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.families = (1 << AF_INET) | (1 << AF_INET6),
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},
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[UNIX_DG_DB] = {
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.states = (1 << SS_CLOSE),
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.families = (1 << AF_UNIX),
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},
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[UNIX_ST_DB] = {
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.states = SS_CONN,
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.families = (1 << AF_UNIX),
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},
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[UNIX_SQ_DB] = {
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.states = SS_CONN,
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.families = (1 << AF_UNIX),
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},
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[PACKET_DG_DB] = {
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.states = (1 << SS_CLOSE),
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.families = (1 << AF_PACKET),
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},
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[PACKET_R_DB] = {
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.states = (1 << SS_CLOSE),
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.families = (1 << AF_PACKET),
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},
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[NETLINK_DB] = {
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.states = (1 << SS_CLOSE),
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.families = (1 << AF_NETLINK),
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},
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[SCTP_DB] = {
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.states = SS_CONN,
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.families = (1 << AF_INET) | (1 << AF_INET6),
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},
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};
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static const struct filter default_afs[AF_MAX] = {
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[AF_INET] = {
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.dbs = INET_DBM,
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.states = SS_CONN,
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},
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[AF_INET6] = {
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.dbs = INET_DBM,
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.states = SS_CONN,
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},
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[AF_UNIX] = {
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.dbs = UNIX_DBM,
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.states = SS_CONN,
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},
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[AF_PACKET] = {
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.dbs = PACKET_DBM,
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.states = (1 << SS_CLOSE),
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},
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[AF_NETLINK] = {
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.dbs = (1 << NETLINK_DB),
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.states = (1 << SS_CLOSE),
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},
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};
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static int do_default = 1;
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static struct filter current_filter;
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static void filter_db_set(struct filter *f, int db)
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{
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f->states |= default_dbs[db].states;
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f->dbs |= 1 << db;
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do_default = 0;
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}
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static void filter_af_set(struct filter *f, int af)
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{
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f->states |= default_afs[af].states;
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f->families |= 1 << af;
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do_default = 0;
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preferred_family = af;
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}
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static int filter_af_get(struct filter *f, int af)
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{
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return f->families & (1 << af);
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}
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static void filter_default_dbs(struct filter *f)
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{
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filter_db_set(f, UDP_DB);
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filter_db_set(f, DCCP_DB);
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filter_db_set(f, TCP_DB);
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filter_db_set(f, RAW_DB);
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filter_db_set(f, UNIX_ST_DB);
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filter_db_set(f, UNIX_DG_DB);
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filter_db_set(f, UNIX_SQ_DB);
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filter_db_set(f, PACKET_R_DB);
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filter_db_set(f, PACKET_DG_DB);
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filter_db_set(f, NETLINK_DB);
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filter_db_set(f, SCTP_DB);
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}
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static void filter_states_set(struct filter *f, int states)
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{
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if (states)
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f->states = states;
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}
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static void filter_merge_defaults(struct filter *f)
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{
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int db;
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int af;
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for (db = 0; db < MAX_DB; db++) {
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if (!(f->dbs & (1 << db)))
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continue;
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if (!(default_dbs[db].families & f->families))
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f->families |= default_dbs[db].families;
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}
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for (af = 0; af < AF_MAX; af++) {
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if (!(f->families & (1 << af)))
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continue;
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if (!(default_afs[af].dbs & f->dbs))
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f->dbs |= default_afs[af].dbs;
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}
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}
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static FILE *generic_proc_open(const char *env, const char *name)
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{
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const char *p = getenv(env);
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char store[128];
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if (!p) {
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p = getenv("PROC_ROOT") ? : "/proc";
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snprintf(store, sizeof(store)-1, "%s/%s", p, name);
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p = store;
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}
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return fopen(p, "r");
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}
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#define net_tcp_open() generic_proc_open("PROC_NET_TCP", "net/tcp")
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#define net_tcp6_open() generic_proc_open("PROC_NET_TCP6", "net/tcp6")
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#define net_udp_open() generic_proc_open("PROC_NET_UDP", "net/udp")
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#define net_udp6_open() generic_proc_open("PROC_NET_UDP6", "net/udp6")
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#define net_raw_open() generic_proc_open("PROC_NET_RAW", "net/raw")
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#define net_raw6_open() generic_proc_open("PROC_NET_RAW6", "net/raw6")
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#define net_unix_open() generic_proc_open("PROC_NET_UNIX", "net/unix")
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#define net_packet_open() generic_proc_open("PROC_NET_PACKET", \
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"net/packet")
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#define net_netlink_open() generic_proc_open("PROC_NET_NETLINK", \
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"net/netlink")
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#define slabinfo_open() generic_proc_open("PROC_SLABINFO", "slabinfo")
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#define net_sockstat_open() generic_proc_open("PROC_NET_SOCKSTAT", \
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"net/sockstat")
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#define net_sockstat6_open() generic_proc_open("PROC_NET_SOCKSTAT6", \
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"net/sockstat6")
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#define net_snmp_open() generic_proc_open("PROC_NET_SNMP", "net/snmp")
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#define ephemeral_ports_open() generic_proc_open("PROC_IP_LOCAL_PORT_RANGE", \
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"sys/net/ipv4/ip_local_port_range")
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struct user_ent {
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struct user_ent *next;
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unsigned int ino;
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int pid;
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int fd;
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char *process;
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char *process_ctx;
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char *socket_ctx;
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};
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#define USER_ENT_HASH_SIZE 256
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struct user_ent *user_ent_hash[USER_ENT_HASH_SIZE];
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static int user_ent_hashfn(unsigned int ino)
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{
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int val = (ino >> 24) ^ (ino >> 16) ^ (ino >> 8) ^ ino;
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return val & (USER_ENT_HASH_SIZE - 1);
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}
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static void user_ent_add(unsigned int ino, char *process,
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int pid, int fd,
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char *proc_ctx,
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char *sock_ctx)
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{
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struct user_ent *p, **pp;
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p = malloc(sizeof(struct user_ent));
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if (!p) {
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fprintf(stderr, "ss: failed to malloc buffer\n");
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abort();
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}
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p->next = NULL;
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p->ino = ino;
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p->pid = pid;
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p->fd = fd;
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p->process = strdup(process);
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p->process_ctx = strdup(proc_ctx);
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p->socket_ctx = strdup(sock_ctx);
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pp = &user_ent_hash[user_ent_hashfn(ino)];
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p->next = *pp;
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*pp = p;
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}
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static void user_ent_destroy(void)
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{
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struct user_ent *p, *p_next;
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int cnt = 0;
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while (cnt != USER_ENT_HASH_SIZE) {
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p = user_ent_hash[cnt];
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while (p) {
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free(p->process);
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free(p->process_ctx);
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free(p->socket_ctx);
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p_next = p->next;
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free(p);
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p = p_next;
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}
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cnt++;
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}
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}
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|
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static void user_ent_hash_build(void)
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{
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const char *root = getenv("PROC_ROOT") ? : "/proc/";
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struct dirent *d;
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char name[1024];
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int nameoff;
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DIR *dir;
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char *pid_context;
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char *sock_context;
|
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const char *no_ctx = "unavailable";
|
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static int user_ent_hash_build_init;
|
|
|
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/* If show_users & show_proc_ctx set only do this once */
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if (user_ent_hash_build_init != 0)
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return;
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|
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user_ent_hash_build_init = 1;
|
|
|
|
strlcpy(name, root, sizeof(name));
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|
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if (strlen(name) == 0 || name[strlen(name)-1] != '/')
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strcat(name, "/");
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|
|
|
nameoff = strlen(name);
|
|
|
|
dir = opendir(name);
|
|
if (!dir)
|
|
return;
|
|
|
|
while ((d = readdir(dir)) != NULL) {
|
|
struct dirent *d1;
|
|
char process[16];
|
|
char *p;
|
|
int pid, pos;
|
|
DIR *dir1;
|
|
char crap;
|
|
|
|
if (sscanf(d->d_name, "%d%c", &pid, &crap) != 1)
|
|
continue;
|
|
|
|
if (getpidcon(pid, &pid_context) != 0)
|
|
pid_context = strdup(no_ctx);
|
|
|
|
snprintf(name + nameoff, sizeof(name) - nameoff, "%d/fd/", pid);
|
|
pos = strlen(name);
|
|
if ((dir1 = opendir(name)) == NULL) {
|
|
free(pid_context);
|
|
continue;
|
|
}
|
|
|
|
process[0] = '\0';
|
|
p = process;
|
|
|
|
while ((d1 = readdir(dir1)) != NULL) {
|
|
const char *pattern = "socket:[";
|
|
unsigned int ino;
|
|
char lnk[64];
|
|
int fd;
|
|
ssize_t link_len;
|
|
char tmp[1024];
|
|
|
|
if (sscanf(d1->d_name, "%d%c", &fd, &crap) != 1)
|
|
continue;
|
|
|
|
snprintf(name+pos, sizeof(name) - pos, "%d", fd);
|
|
|
|
link_len = readlink(name, lnk, sizeof(lnk)-1);
|
|
if (link_len == -1)
|
|
continue;
|
|
lnk[link_len] = '\0';
|
|
|
|
if (strncmp(lnk, pattern, strlen(pattern)))
|
|
continue;
|
|
|
|
sscanf(lnk, "socket:[%u]", &ino);
|
|
|
|
snprintf(tmp, sizeof(tmp), "%s/%d/fd/%s",
|
|
root, pid, d1->d_name);
|
|
|
|
if (getfilecon(tmp, &sock_context) <= 0)
|
|
sock_context = strdup(no_ctx);
|
|
|
|
if (*p == '\0') {
|
|
FILE *fp;
|
|
|
|
snprintf(tmp, sizeof(tmp), "%s/%d/stat",
|
|
root, pid);
|
|
if ((fp = fopen(tmp, "r")) != NULL) {
|
|
if (fscanf(fp, "%*d (%[^)])", p) < 1)
|
|
; /* ignore */
|
|
fclose(fp);
|
|
}
|
|
}
|
|
user_ent_add(ino, p, pid, fd,
|
|
pid_context, sock_context);
|
|
free(sock_context);
|
|
}
|
|
free(pid_context);
|
|
closedir(dir1);
|
|
}
|
|
closedir(dir);
|
|
}
|
|
|
|
enum entry_types {
|
|
USERS,
|
|
PROC_CTX,
|
|
PROC_SOCK_CTX
|
|
};
|
|
|
|
#define ENTRY_BUF_SIZE 512
|
|
static int find_entry(unsigned int ino, char **buf, int type)
|
|
{
|
|
struct user_ent *p;
|
|
int cnt = 0;
|
|
char *ptr;
|
|
char *new_buf;
|
|
int len, new_buf_len;
|
|
int buf_used = 0;
|
|
int buf_len = 0;
|
|
|
|
if (!ino)
|
|
return 0;
|
|
|
|
p = user_ent_hash[user_ent_hashfn(ino)];
|
|
ptr = *buf = NULL;
|
|
while (p) {
|
|
if (p->ino != ino)
|
|
goto next;
|
|
|
|
while (1) {
|
|
ptr = *buf + buf_used;
|
|
switch (type) {
|
|
case USERS:
|
|
len = snprintf(ptr, buf_len - buf_used,
|
|
"(\"%s\",pid=%d,fd=%d),",
|
|
p->process, p->pid, p->fd);
|
|
break;
|
|
case PROC_CTX:
|
|
len = snprintf(ptr, buf_len - buf_used,
|
|
"(\"%s\",pid=%d,proc_ctx=%s,fd=%d),",
|
|
p->process, p->pid,
|
|
p->process_ctx, p->fd);
|
|
break;
|
|
case PROC_SOCK_CTX:
|
|
len = snprintf(ptr, buf_len - buf_used,
|
|
"(\"%s\",pid=%d,proc_ctx=%s,fd=%d,sock_ctx=%s),",
|
|
p->process, p->pid,
|
|
p->process_ctx, p->fd,
|
|
p->socket_ctx);
|
|
break;
|
|
default:
|
|
fprintf(stderr, "ss: invalid type: %d\n", type);
|
|
abort();
|
|
}
|
|
|
|
if (len < 0 || len >= buf_len - buf_used) {
|
|
new_buf_len = buf_len + ENTRY_BUF_SIZE;
|
|
new_buf = realloc(*buf, new_buf_len);
|
|
if (!new_buf) {
|
|
fprintf(stderr, "ss: failed to malloc buffer\n");
|
|
abort();
|
|
}
|
|
*buf = new_buf;
|
|
buf_len = new_buf_len;
|
|
continue;
|
|
} else {
|
|
buf_used += len;
|
|
break;
|
|
}
|
|
}
|
|
cnt++;
|
|
next:
|
|
p = p->next;
|
|
}
|
|
if (buf_used) {
|
|
ptr = *buf + buf_used;
|
|
ptr[-1] = '\0';
|
|
}
|
|
return cnt;
|
|
}
|
|
|
|
/* Get stats from slab */
|
|
|
|
struct slabstat {
|
|
int socks;
|
|
int tcp_ports;
|
|
int tcp_tws;
|
|
int tcp_syns;
|
|
int skbs;
|
|
};
|
|
|
|
static struct slabstat slabstat;
|
|
|
|
static int get_slabstat(struct slabstat *s)
|
|
{
|
|
char buf[256];
|
|
FILE *fp;
|
|
int cnt;
|
|
static int slabstat_valid;
|
|
static const char * const slabstat_ids[] = {
|
|
"sock",
|
|
"tcp_bind_bucket",
|
|
"tcp_tw_bucket",
|
|
"tcp_open_request",
|
|
"skbuff_head_cache",
|
|
};
|
|
|
|
if (slabstat_valid)
|
|
return 0;
|
|
|
|
memset(s, 0, sizeof(*s));
|
|
|
|
fp = slabinfo_open();
|
|
if (!fp)
|
|
return -1;
|
|
|
|
cnt = sizeof(*s)/sizeof(int);
|
|
|
|
if (!fgets(buf, sizeof(buf), fp)) {
|
|
fclose(fp);
|
|
return -1;
|
|
}
|
|
while (fgets(buf, sizeof(buf), fp) != NULL) {
|
|
int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(slabstat_ids); i++) {
|
|
if (memcmp(buf, slabstat_ids[i], strlen(slabstat_ids[i])) == 0) {
|
|
sscanf(buf, "%*s%d", ((int *)s) + i);
|
|
cnt--;
|
|
break;
|
|
}
|
|
}
|
|
if (cnt <= 0)
|
|
break;
|
|
}
|
|
|
|
slabstat_valid = 1;
|
|
|
|
fclose(fp);
|
|
return 0;
|
|
}
|
|
|
|
static unsigned long long cookie_sk_get(const uint32_t *cookie)
|
|
{
|
|
return (((unsigned long long)cookie[1] << 31) << 1) | cookie[0];
|
|
}
|
|
|
|
static const char *sctp_sstate_name[] = {
|
|
[SCTP_STATE_CLOSED] = "CLOSED",
|
|
[SCTP_STATE_COOKIE_WAIT] = "COOKIE_WAIT",
|
|
[SCTP_STATE_COOKIE_ECHOED] = "COOKIE_ECHOED",
|
|
[SCTP_STATE_ESTABLISHED] = "ESTAB",
|
|
[SCTP_STATE_SHUTDOWN_PENDING] = "SHUTDOWN_PENDING",
|
|
[SCTP_STATE_SHUTDOWN_SENT] = "SHUTDOWN_SENT",
|
|
[SCTP_STATE_SHUTDOWN_RECEIVED] = "SHUTDOWN_RECEIVED",
|
|
[SCTP_STATE_SHUTDOWN_ACK_SENT] = "ACK_SENT",
|
|
};
|
|
|
|
struct sockstat {
|
|
struct sockstat *next;
|
|
unsigned int type;
|
|
uint16_t prot;
|
|
uint16_t raw_prot;
|
|
inet_prefix local;
|
|
inet_prefix remote;
|
|
int lport;
|
|
int rport;
|
|
int state;
|
|
int rq, wq;
|
|
unsigned int ino;
|
|
unsigned int uid;
|
|
int refcnt;
|
|
unsigned int iface;
|
|
unsigned long long sk;
|
|
char *name;
|
|
char *peer_name;
|
|
__u32 mark;
|
|
};
|
|
|
|
struct dctcpstat {
|
|
unsigned int ce_state;
|
|
unsigned int alpha;
|
|
unsigned int ab_ecn;
|
|
unsigned int ab_tot;
|
|
bool enabled;
|
|
};
|
|
|
|
struct tcpstat {
|
|
struct sockstat ss;
|
|
unsigned int timer;
|
|
unsigned int timeout;
|
|
int probes;
|
|
char cong_alg[16];
|
|
double rto, ato, rtt, rttvar;
|
|
int qack, ssthresh, backoff;
|
|
double send_bps;
|
|
int snd_wscale;
|
|
int rcv_wscale;
|
|
int mss;
|
|
int rcv_mss;
|
|
int advmss;
|
|
unsigned int cwnd;
|
|
unsigned int lastsnd;
|
|
unsigned int lastrcv;
|
|
unsigned int lastack;
|
|
double pacing_rate;
|
|
double pacing_rate_max;
|
|
double delivery_rate;
|
|
unsigned long long bytes_acked;
|
|
unsigned long long bytes_received;
|
|
unsigned int segs_out;
|
|
unsigned int segs_in;
|
|
unsigned int data_segs_out;
|
|
unsigned int data_segs_in;
|
|
unsigned int unacked;
|
|
unsigned int retrans;
|
|
unsigned int retrans_total;
|
|
unsigned int lost;
|
|
unsigned int sacked;
|
|
unsigned int fackets;
|
|
unsigned int reordering;
|
|
unsigned int not_sent;
|
|
double rcv_rtt;
|
|
double min_rtt;
|
|
int rcv_space;
|
|
unsigned long long busy_time;
|
|
unsigned long long rwnd_limited;
|
|
unsigned long long sndbuf_limited;
|
|
bool has_ts_opt;
|
|
bool has_sack_opt;
|
|
bool has_ecn_opt;
|
|
bool has_ecnseen_opt;
|
|
bool has_fastopen_opt;
|
|
bool has_wscale_opt;
|
|
bool app_limited;
|
|
struct dctcpstat *dctcp;
|
|
struct tcp_bbr_info *bbr_info;
|
|
};
|
|
|
|
/* SCTP assocs share the same inode number with their parent endpoint. So if we
|
|
* have seen the inode number before, it must be an assoc instead of the next
|
|
* endpoint. */
|
|
static bool is_sctp_assoc(struct sockstat *s, const char *sock_name)
|
|
{
|
|
if (strcmp(sock_name, "sctp"))
|
|
return false;
|
|
if (!sctp_ino || sctp_ino != s->ino)
|
|
return false;
|
|
return true;
|
|
}
|
|
|
|
static const char *unix_netid_name(int type)
|
|
{
|
|
switch (type) {
|
|
case SOCK_STREAM:
|
|
return "u_str";
|
|
case SOCK_SEQPACKET:
|
|
return "u_seq";
|
|
case SOCK_DGRAM:
|
|
default:
|
|
return "u_dgr";
|
|
}
|
|
}
|
|
|
|
static const char *proto_name(int protocol)
|
|
{
|
|
switch (protocol) {
|
|
case 0:
|
|
return "raw";
|
|
case IPPROTO_UDP:
|
|
return "udp";
|
|
case IPPROTO_TCP:
|
|
return "tcp";
|
|
case IPPROTO_SCTP:
|
|
return "sctp";
|
|
case IPPROTO_DCCP:
|
|
return "dccp";
|
|
case IPPROTO_ICMPV6:
|
|
return "icmp6";
|
|
}
|
|
|
|
return "???";
|
|
}
|
|
|
|
static void sock_state_print(struct sockstat *s)
|
|
{
|
|
const char *sock_name;
|
|
static const char * const sstate_name[] = {
|
|
"UNKNOWN",
|
|
[SS_ESTABLISHED] = "ESTAB",
|
|
[SS_SYN_SENT] = "SYN-SENT",
|
|
[SS_SYN_RECV] = "SYN-RECV",
|
|
[SS_FIN_WAIT1] = "FIN-WAIT-1",
|
|
[SS_FIN_WAIT2] = "FIN-WAIT-2",
|
|
[SS_TIME_WAIT] = "TIME-WAIT",
|
|
[SS_CLOSE] = "UNCONN",
|
|
[SS_CLOSE_WAIT] = "CLOSE-WAIT",
|
|
[SS_LAST_ACK] = "LAST-ACK",
|
|
[SS_LISTEN] = "LISTEN",
|
|
[SS_CLOSING] = "CLOSING",
|
|
};
|
|
|
|
switch (s->local.family) {
|
|
case AF_UNIX:
|
|
sock_name = unix_netid_name(s->type);
|
|
break;
|
|
case AF_INET:
|
|
case AF_INET6:
|
|
sock_name = proto_name(s->type);
|
|
break;
|
|
case AF_PACKET:
|
|
sock_name = s->type == SOCK_RAW ? "p_raw" : "p_dgr";
|
|
break;
|
|
case AF_NETLINK:
|
|
sock_name = "nl";
|
|
break;
|
|
default:
|
|
sock_name = "unknown";
|
|
}
|
|
|
|
if (netid_width)
|
|
printf("%-*s ", netid_width,
|
|
is_sctp_assoc(s, sock_name) ? "" : sock_name);
|
|
if (state_width) {
|
|
if (is_sctp_assoc(s, sock_name))
|
|
printf("`- %-*s ", state_width - 3,
|
|
sctp_sstate_name[s->state]);
|
|
else
|
|
printf("%-*s ", state_width, sstate_name[s->state]);
|
|
}
|
|
|
|
printf("%-6d %-6d %s", s->rq, s->wq, odd_width_pad);
|
|
}
|
|
|
|
static void sock_details_print(struct sockstat *s)
|
|
{
|
|
if (s->uid)
|
|
printf(" uid:%u", s->uid);
|
|
|
|
printf(" ino:%u", s->ino);
|
|
printf(" sk:%llx", s->sk);
|
|
|
|
if (s->mark)
|
|
printf(" fwmark:0x%x", s->mark);
|
|
}
|
|
|
|
static void sock_addr_print_width(int addr_len, const char *addr, char *delim,
|
|
int port_len, const char *port, const char *ifname)
|
|
{
|
|
if (ifname) {
|
|
printf("%*s%%%s%s%-*s ", addr_len, addr, ifname, delim,
|
|
port_len, port);
|
|
} else {
|
|
printf("%*s%s%-*s ", addr_len, addr, delim, port_len, port);
|
|
}
|
|
}
|
|
|
|
static void sock_addr_print(const char *addr, char *delim, const char *port,
|
|
const char *ifname)
|
|
{
|
|
sock_addr_print_width(addr_width, addr, delim, serv_width, port, ifname);
|
|
}
|
|
|
|
static const char *print_ms_timer(unsigned int timeout)
|
|
{
|
|
static char buf[64];
|
|
int secs, msecs, minutes;
|
|
|
|
secs = timeout/1000;
|
|
minutes = secs/60;
|
|
secs = secs%60;
|
|
msecs = timeout%1000;
|
|
buf[0] = 0;
|
|
if (minutes) {
|
|
msecs = 0;
|
|
snprintf(buf, sizeof(buf)-16, "%dmin", minutes);
|
|
if (minutes > 9)
|
|
secs = 0;
|
|
}
|
|
if (secs) {
|
|
if (secs > 9)
|
|
msecs = 0;
|
|
sprintf(buf+strlen(buf), "%d%s", secs, msecs ? "." : "sec");
|
|
}
|
|
if (msecs)
|
|
sprintf(buf+strlen(buf), "%03dms", msecs);
|
|
return buf;
|
|
}
|
|
|
|
struct scache {
|
|
struct scache *next;
|
|
int port;
|
|
char *name;
|
|
const char *proto;
|
|
};
|
|
|
|
struct scache *rlist;
|
|
|
|
static void init_service_resolver(void)
|
|
{
|
|
char buf[128];
|
|
FILE *fp = popen("/usr/sbin/rpcinfo -p 2>/dev/null", "r");
|
|
|
|
if (!fp)
|
|
return;
|
|
|
|
if (!fgets(buf, sizeof(buf), fp)) {
|
|
pclose(fp);
|
|
return;
|
|
}
|
|
while (fgets(buf, sizeof(buf), fp) != NULL) {
|
|
unsigned int progn, port;
|
|
char proto[128], prog[128] = "rpc.";
|
|
struct scache *c;
|
|
|
|
if (sscanf(buf, "%u %*d %s %u %s",
|
|
&progn, proto, &port, prog+4) != 4)
|
|
continue;
|
|
|
|
if (!(c = malloc(sizeof(*c))))
|
|
continue;
|
|
|
|
c->port = port;
|
|
c->name = strdup(prog);
|
|
if (strcmp(proto, TCP_PROTO) == 0)
|
|
c->proto = TCP_PROTO;
|
|
else if (strcmp(proto, UDP_PROTO) == 0)
|
|
c->proto = UDP_PROTO;
|
|
else if (strcmp(proto, SCTP_PROTO) == 0)
|
|
c->proto = SCTP_PROTO;
|
|
else
|
|
c->proto = NULL;
|
|
c->next = rlist;
|
|
rlist = c;
|
|
}
|
|
pclose(fp);
|
|
}
|
|
|
|
/* Even do not try default linux ephemeral port ranges:
|
|
* default /etc/services contains so much of useless crap
|
|
* wouldbe "allocated" to this area that resolution
|
|
* is really harmful. I shrug each time when seeing
|
|
* "socks" or "cfinger" in dumps.
|
|
*/
|
|
static int is_ephemeral(int port)
|
|
{
|
|
static int min = 0, max;
|
|
|
|
if (!min) {
|
|
FILE *f = ephemeral_ports_open();
|
|
|
|
if (!f || fscanf(f, "%d %d", &min, &max) < 2) {
|
|
min = 1024;
|
|
max = 4999;
|
|
}
|
|
if (f)
|
|
fclose(f);
|
|
}
|
|
return port >= min && port <= max;
|
|
}
|
|
|
|
|
|
static const char *__resolve_service(int port)
|
|
{
|
|
struct scache *c;
|
|
|
|
for (c = rlist; c; c = c->next) {
|
|
if (c->port == port && c->proto == dg_proto)
|
|
return c->name;
|
|
}
|
|
|
|
if (!is_ephemeral(port)) {
|
|
static int notfirst;
|
|
struct servent *se;
|
|
|
|
if (!notfirst) {
|
|
setservent(1);
|
|
notfirst = 1;
|
|
}
|
|
se = getservbyport(htons(port), dg_proto);
|
|
if (se)
|
|
return se->s_name;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
#define SCACHE_BUCKETS 1024
|
|
static struct scache *cache_htab[SCACHE_BUCKETS];
|
|
|
|
static const char *resolve_service(int port)
|
|
{
|
|
static char buf[128];
|
|
struct scache *c;
|
|
const char *res;
|
|
int hash;
|
|
|
|
if (port == 0) {
|
|
buf[0] = '*';
|
|
buf[1] = 0;
|
|
return buf;
|
|
}
|
|
|
|
if (!resolve_services)
|
|
goto do_numeric;
|
|
|
|
if (dg_proto == RAW_PROTO)
|
|
return inet_proto_n2a(port, buf, sizeof(buf));
|
|
|
|
|
|
hash = (port^(((unsigned long)dg_proto)>>2)) % SCACHE_BUCKETS;
|
|
|
|
for (c = cache_htab[hash]; c; c = c->next) {
|
|
if (c->port == port && c->proto == dg_proto)
|
|
goto do_cache;
|
|
}
|
|
|
|
c = malloc(sizeof(*c));
|
|
if (!c)
|
|
goto do_numeric;
|
|
res = __resolve_service(port);
|
|
c->port = port;
|
|
c->name = res ? strdup(res) : NULL;
|
|
c->proto = dg_proto;
|
|
c->next = cache_htab[hash];
|
|
cache_htab[hash] = c;
|
|
|
|
do_cache:
|
|
if (c->name)
|
|
return c->name;
|
|
|
|
do_numeric:
|
|
sprintf(buf, "%u", port);
|
|
return buf;
|
|
}
|
|
|
|
static void inet_addr_print(const inet_prefix *a, int port,
|
|
unsigned int ifindex, bool v6only)
|
|
{
|
|
char buf[1024];
|
|
const char *ap = buf;
|
|
int est_len = addr_width;
|
|
const char *ifname = NULL;
|
|
|
|
if (a->family == AF_INET) {
|
|
ap = format_host(AF_INET, 4, a->data);
|
|
} else {
|
|
if (!v6only &&
|
|
!memcmp(a->data, &in6addr_any, sizeof(in6addr_any))) {
|
|
buf[0] = '*';
|
|
buf[1] = 0;
|
|
} else {
|
|
ap = format_host(a->family, 16, a->data);
|
|
|
|
/* Numeric IPv6 addresses should be bracketed */
|
|
if (strchr(ap, ':')) {
|
|
snprintf(buf, sizeof(buf),
|
|
"[%s]", ap);
|
|
ap = buf;
|
|
}
|
|
|
|
est_len = strlen(ap);
|
|
if (est_len <= addr_width)
|
|
est_len = addr_width;
|
|
else
|
|
est_len = addr_width + ((est_len-addr_width+3)/4)*4;
|
|
}
|
|
}
|
|
|
|
if (ifindex) {
|
|
ifname = ll_index_to_name(ifindex);
|
|
est_len -= strlen(ifname) + 1; /* +1 for percent char */
|
|
if (est_len < 0)
|
|
est_len = 0;
|
|
}
|
|
|
|
sock_addr_print_width(est_len, ap, ":", serv_width, resolve_service(port),
|
|
ifname);
|
|
}
|
|
|
|
struct aafilter {
|
|
inet_prefix addr;
|
|
int port;
|
|
unsigned int iface;
|
|
__u32 mark;
|
|
__u32 mask;
|
|
struct aafilter *next;
|
|
};
|
|
|
|
static int inet2_addr_match(const inet_prefix *a, const inet_prefix *p,
|
|
int plen)
|
|
{
|
|
if (!inet_addr_match(a, p, plen))
|
|
return 0;
|
|
|
|
/* Cursed "v4 mapped" addresses: v4 mapped socket matches
|
|
* pure IPv4 rule, but v4-mapped rule selects only v4-mapped
|
|
* sockets. Fair? */
|
|
if (p->family == AF_INET && a->family == AF_INET6) {
|
|
if (a->data[0] == 0 && a->data[1] == 0 &&
|
|
a->data[2] == htonl(0xffff)) {
|
|
inet_prefix tmp = *a;
|
|
|
|
tmp.data[0] = a->data[3];
|
|
return inet_addr_match(&tmp, p, plen);
|
|
}
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static int unix_match(const inet_prefix *a, const inet_prefix *p)
|
|
{
|
|
char *addr, *pattern;
|
|
|
|
memcpy(&addr, a->data, sizeof(addr));
|
|
memcpy(&pattern, p->data, sizeof(pattern));
|
|
if (pattern == NULL)
|
|
return 1;
|
|
if (addr == NULL)
|
|
addr = "";
|
|
return !fnmatch(pattern, addr, 0);
|
|
}
|
|
|
|
static int run_ssfilter(struct ssfilter *f, struct sockstat *s)
|
|
{
|
|
switch (f->type) {
|
|
case SSF_S_AUTO:
|
|
{
|
|
if (s->local.family == AF_UNIX) {
|
|
char *p;
|
|
|
|
memcpy(&p, s->local.data, sizeof(p));
|
|
return p == NULL || (p[0] == '@' && strlen(p) == 6 &&
|
|
strspn(p+1, "0123456789abcdef") == 5);
|
|
}
|
|
if (s->local.family == AF_PACKET)
|
|
return s->lport == 0 && s->local.data[0] == 0;
|
|
if (s->local.family == AF_NETLINK)
|
|
return s->lport < 0;
|
|
|
|
return is_ephemeral(s->lport);
|
|
}
|
|
case SSF_DCOND:
|
|
{
|
|
struct aafilter *a = (void *)f->pred;
|
|
|
|
if (a->addr.family == AF_UNIX)
|
|
return unix_match(&s->remote, &a->addr);
|
|
if (a->port != -1 && a->port != s->rport)
|
|
return 0;
|
|
if (a->addr.bitlen) {
|
|
do {
|
|
if (!inet2_addr_match(&s->remote, &a->addr, a->addr.bitlen))
|
|
return 1;
|
|
} while ((a = a->next) != NULL);
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
case SSF_SCOND:
|
|
{
|
|
struct aafilter *a = (void *)f->pred;
|
|
|
|
if (a->addr.family == AF_UNIX)
|
|
return unix_match(&s->local, &a->addr);
|
|
if (a->port != -1 && a->port != s->lport)
|
|
return 0;
|
|
if (a->addr.bitlen) {
|
|
do {
|
|
if (!inet2_addr_match(&s->local, &a->addr, a->addr.bitlen))
|
|
return 1;
|
|
} while ((a = a->next) != NULL);
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
case SSF_D_GE:
|
|
{
|
|
struct aafilter *a = (void *)f->pred;
|
|
|
|
return s->rport >= a->port;
|
|
}
|
|
case SSF_D_LE:
|
|
{
|
|
struct aafilter *a = (void *)f->pred;
|
|
|
|
return s->rport <= a->port;
|
|
}
|
|
case SSF_S_GE:
|
|
{
|
|
struct aafilter *a = (void *)f->pred;
|
|
|
|
return s->lport >= a->port;
|
|
}
|
|
case SSF_S_LE:
|
|
{
|
|
struct aafilter *a = (void *)f->pred;
|
|
|
|
return s->lport <= a->port;
|
|
}
|
|
case SSF_DEVCOND:
|
|
{
|
|
struct aafilter *a = (void *)f->pred;
|
|
|
|
return s->iface == a->iface;
|
|
}
|
|
case SSF_MARKMASK:
|
|
{
|
|
struct aafilter *a = (void *)f->pred;
|
|
|
|
return (s->mark & a->mask) == a->mark;
|
|
}
|
|
/* Yup. It is recursion. Sorry. */
|
|
case SSF_AND:
|
|
return run_ssfilter(f->pred, s) && run_ssfilter(f->post, s);
|
|
case SSF_OR:
|
|
return run_ssfilter(f->pred, s) || run_ssfilter(f->post, s);
|
|
case SSF_NOT:
|
|
return !run_ssfilter(f->pred, s);
|
|
default:
|
|
abort();
|
|
}
|
|
}
|
|
|
|
/* Relocate external jumps by reloc. */
|
|
static void ssfilter_patch(char *a, int len, int reloc)
|
|
{
|
|
while (len > 0) {
|
|
struct inet_diag_bc_op *op = (struct inet_diag_bc_op *)a;
|
|
|
|
if (op->no == len+4)
|
|
op->no += reloc;
|
|
len -= op->yes;
|
|
a += op->yes;
|
|
}
|
|
if (len < 0)
|
|
abort();
|
|
}
|
|
|
|
static int ssfilter_bytecompile(struct ssfilter *f, char **bytecode)
|
|
{
|
|
switch (f->type) {
|
|
case SSF_S_AUTO:
|
|
{
|
|
if (!(*bytecode = malloc(4))) abort();
|
|
((struct inet_diag_bc_op *)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_AUTO, 4, 8 };
|
|
return 4;
|
|
}
|
|
case SSF_DCOND:
|
|
case SSF_SCOND:
|
|
{
|
|
struct aafilter *a = (void *)f->pred;
|
|
struct aafilter *b;
|
|
char *ptr;
|
|
int code = (f->type == SSF_DCOND ? INET_DIAG_BC_D_COND : INET_DIAG_BC_S_COND);
|
|
int len = 0;
|
|
|
|
for (b = a; b; b = b->next) {
|
|
len += 4 + sizeof(struct inet_diag_hostcond);
|
|
if (a->addr.family == AF_INET6)
|
|
len += 16;
|
|
else
|
|
len += 4;
|
|
if (b->next)
|
|
len += 4;
|
|
}
|
|
if (!(ptr = malloc(len))) abort();
|
|
*bytecode = ptr;
|
|
for (b = a; b; b = b->next) {
|
|
struct inet_diag_bc_op *op = (struct inet_diag_bc_op *)ptr;
|
|
int alen = (a->addr.family == AF_INET6 ? 16 : 4);
|
|
int oplen = alen + 4 + sizeof(struct inet_diag_hostcond);
|
|
struct inet_diag_hostcond *cond = (struct inet_diag_hostcond *)(ptr+4);
|
|
|
|
*op = (struct inet_diag_bc_op){ code, oplen, oplen+4 };
|
|
cond->family = a->addr.family;
|
|
cond->port = a->port;
|
|
cond->prefix_len = a->addr.bitlen;
|
|
memcpy(cond->addr, a->addr.data, alen);
|
|
ptr += oplen;
|
|
if (b->next) {
|
|
op = (struct inet_diag_bc_op *)ptr;
|
|
*op = (struct inet_diag_bc_op){ INET_DIAG_BC_JMP, 4, len - (ptr-*bytecode)};
|
|
ptr += 4;
|
|
}
|
|
}
|
|
return ptr - *bytecode;
|
|
}
|
|
case SSF_D_GE:
|
|
{
|
|
struct aafilter *x = (void *)f->pred;
|
|
|
|
if (!(*bytecode = malloc(8))) abort();
|
|
((struct inet_diag_bc_op *)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_D_GE, 8, 12 };
|
|
((struct inet_diag_bc_op *)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
|
|
return 8;
|
|
}
|
|
case SSF_D_LE:
|
|
{
|
|
struct aafilter *x = (void *)f->pred;
|
|
|
|
if (!(*bytecode = malloc(8))) abort();
|
|
((struct inet_diag_bc_op *)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_D_LE, 8, 12 };
|
|
((struct inet_diag_bc_op *)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
|
|
return 8;
|
|
}
|
|
case SSF_S_GE:
|
|
{
|
|
struct aafilter *x = (void *)f->pred;
|
|
|
|
if (!(*bytecode = malloc(8))) abort();
|
|
((struct inet_diag_bc_op *)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_S_GE, 8, 12 };
|
|
((struct inet_diag_bc_op *)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
|
|
return 8;
|
|
}
|
|
case SSF_S_LE:
|
|
{
|
|
struct aafilter *x = (void *)f->pred;
|
|
|
|
if (!(*bytecode = malloc(8))) abort();
|
|
((struct inet_diag_bc_op *)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_S_LE, 8, 12 };
|
|
((struct inet_diag_bc_op *)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
|
|
return 8;
|
|
}
|
|
|
|
case SSF_AND:
|
|
{
|
|
char *a1 = NULL, *a2 = NULL, *a;
|
|
int l1, l2;
|
|
|
|
l1 = ssfilter_bytecompile(f->pred, &a1);
|
|
l2 = ssfilter_bytecompile(f->post, &a2);
|
|
if (!l1 || !l2) {
|
|
free(a1);
|
|
free(a2);
|
|
return 0;
|
|
}
|
|
if (!(a = malloc(l1+l2))) abort();
|
|
memcpy(a, a1, l1);
|
|
memcpy(a+l1, a2, l2);
|
|
free(a1); free(a2);
|
|
ssfilter_patch(a, l1, l2);
|
|
*bytecode = a;
|
|
return l1+l2;
|
|
}
|
|
case SSF_OR:
|
|
{
|
|
char *a1 = NULL, *a2 = NULL, *a;
|
|
int l1, l2;
|
|
|
|
l1 = ssfilter_bytecompile(f->pred, &a1);
|
|
l2 = ssfilter_bytecompile(f->post, &a2);
|
|
if (!l1 || !l2) {
|
|
free(a1);
|
|
free(a2);
|
|
return 0;
|
|
}
|
|
if (!(a = malloc(l1+l2+4))) abort();
|
|
memcpy(a, a1, l1);
|
|
memcpy(a+l1+4, a2, l2);
|
|
free(a1); free(a2);
|
|
*(struct inet_diag_bc_op *)(a+l1) = (struct inet_diag_bc_op){ INET_DIAG_BC_JMP, 4, l2+4 };
|
|
*bytecode = a;
|
|
return l1+l2+4;
|
|
}
|
|
case SSF_NOT:
|
|
{
|
|
char *a1 = NULL, *a;
|
|
int l1;
|
|
|
|
l1 = ssfilter_bytecompile(f->pred, &a1);
|
|
if (!l1) {
|
|
free(a1);
|
|
return 0;
|
|
}
|
|
if (!(a = malloc(l1+4))) abort();
|
|
memcpy(a, a1, l1);
|
|
free(a1);
|
|
*(struct inet_diag_bc_op *)(a+l1) = (struct inet_diag_bc_op){ INET_DIAG_BC_JMP, 4, 8 };
|
|
*bytecode = a;
|
|
return l1+4;
|
|
}
|
|
case SSF_DEVCOND:
|
|
{
|
|
/* bytecompile for SSF_DEVCOND not supported yet */
|
|
return 0;
|
|
}
|
|
case SSF_MARKMASK:
|
|
{
|
|
struct aafilter *a = (void *)f->pred;
|
|
struct instr {
|
|
struct inet_diag_bc_op op;
|
|
struct inet_diag_markcond cond;
|
|
};
|
|
int inslen = sizeof(struct instr);
|
|
|
|
if (!(*bytecode = malloc(inslen))) abort();
|
|
((struct instr *)*bytecode)[0] = (struct instr) {
|
|
{ INET_DIAG_BC_MARK_COND, inslen, inslen + 4 },
|
|
{ a->mark, a->mask},
|
|
};
|
|
|
|
return inslen;
|
|
}
|
|
default:
|
|
abort();
|
|
}
|
|
}
|
|
|
|
static int remember_he(struct aafilter *a, struct hostent *he)
|
|
{
|
|
char **ptr = he->h_addr_list;
|
|
int cnt = 0;
|
|
int len;
|
|
|
|
if (he->h_addrtype == AF_INET)
|
|
len = 4;
|
|
else if (he->h_addrtype == AF_INET6)
|
|
len = 16;
|
|
else
|
|
return 0;
|
|
|
|
while (*ptr) {
|
|
struct aafilter *b = a;
|
|
|
|
if (a->addr.bitlen) {
|
|
if ((b = malloc(sizeof(*b))) == NULL)
|
|
return cnt;
|
|
*b = *a;
|
|
a->next = b;
|
|
}
|
|
memcpy(b->addr.data, *ptr, len);
|
|
b->addr.bytelen = len;
|
|
b->addr.bitlen = len*8;
|
|
b->addr.family = he->h_addrtype;
|
|
ptr++;
|
|
cnt++;
|
|
}
|
|
return cnt;
|
|
}
|
|
|
|
static int get_dns_host(struct aafilter *a, const char *addr, int fam)
|
|
{
|
|
static int notfirst;
|
|
int cnt = 0;
|
|
struct hostent *he;
|
|
|
|
a->addr.bitlen = 0;
|
|
if (!notfirst) {
|
|
sethostent(1);
|
|
notfirst = 1;
|
|
}
|
|
he = gethostbyname2(addr, fam == AF_UNSPEC ? AF_INET : fam);
|
|
if (he)
|
|
cnt = remember_he(a, he);
|
|
if (fam == AF_UNSPEC) {
|
|
he = gethostbyname2(addr, AF_INET6);
|
|
if (he)
|
|
cnt += remember_he(a, he);
|
|
}
|
|
return !cnt;
|
|
}
|
|
|
|
static int xll_initted;
|
|
|
|
static void xll_init(void)
|
|
{
|
|
struct rtnl_handle rth;
|
|
|
|
if (rtnl_open(&rth, 0) < 0)
|
|
exit(1);
|
|
|
|
ll_init_map(&rth);
|
|
rtnl_close(&rth);
|
|
xll_initted = 1;
|
|
}
|
|
|
|
static const char *xll_index_to_name(int index)
|
|
{
|
|
if (!xll_initted)
|
|
xll_init();
|
|
return ll_index_to_name(index);
|
|
}
|
|
|
|
static int xll_name_to_index(const char *dev)
|
|
{
|
|
if (!xll_initted)
|
|
xll_init();
|
|
return ll_name_to_index(dev);
|
|
}
|
|
|
|
void *parse_devcond(char *name)
|
|
{
|
|
struct aafilter a = { .iface = 0 };
|
|
struct aafilter *res;
|
|
|
|
a.iface = xll_name_to_index(name);
|
|
if (a.iface == 0) {
|
|
char *end;
|
|
unsigned long n;
|
|
|
|
n = strtoul(name, &end, 0);
|
|
if (!end || end == name || *end || n > UINT_MAX)
|
|
return NULL;
|
|
|
|
a.iface = n;
|
|
}
|
|
|
|
res = malloc(sizeof(*res));
|
|
*res = a;
|
|
|
|
return res;
|
|
}
|
|
|
|
void *parse_hostcond(char *addr, bool is_port)
|
|
{
|
|
char *port = NULL;
|
|
struct aafilter a = { .port = -1 };
|
|
struct aafilter *res;
|
|
int fam = preferred_family;
|
|
struct filter *f = ¤t_filter;
|
|
|
|
if (fam == AF_UNIX || strncmp(addr, "unix:", 5) == 0) {
|
|
char *p;
|
|
|
|
a.addr.family = AF_UNIX;
|
|
if (strncmp(addr, "unix:", 5) == 0)
|
|
addr += 5;
|
|
p = strdup(addr);
|
|
a.addr.bitlen = 8*strlen(p);
|
|
memcpy(a.addr.data, &p, sizeof(p));
|
|
fam = AF_UNIX;
|
|
goto out;
|
|
}
|
|
|
|
if (fam == AF_PACKET || strncmp(addr, "link:", 5) == 0) {
|
|
a.addr.family = AF_PACKET;
|
|
a.addr.bitlen = 0;
|
|
if (strncmp(addr, "link:", 5) == 0)
|
|
addr += 5;
|
|
port = strchr(addr, ':');
|
|
if (port) {
|
|
*port = 0;
|
|
if (port[1] && strcmp(port+1, "*")) {
|
|
if (get_integer(&a.port, port+1, 0)) {
|
|
if ((a.port = xll_name_to_index(port+1)) <= 0)
|
|
return NULL;
|
|
}
|
|
}
|
|
}
|
|
if (addr[0] && strcmp(addr, "*")) {
|
|
unsigned short tmp;
|
|
|
|
a.addr.bitlen = 32;
|
|
if (ll_proto_a2n(&tmp, addr))
|
|
return NULL;
|
|
a.addr.data[0] = ntohs(tmp);
|
|
}
|
|
fam = AF_PACKET;
|
|
goto out;
|
|
}
|
|
|
|
if (fam == AF_NETLINK || strncmp(addr, "netlink:", 8) == 0) {
|
|
a.addr.family = AF_NETLINK;
|
|
a.addr.bitlen = 0;
|
|
if (strncmp(addr, "netlink:", 8) == 0)
|
|
addr += 8;
|
|
port = strchr(addr, ':');
|
|
if (port) {
|
|
*port = 0;
|
|
if (port[1] && strcmp(port+1, "*")) {
|
|
if (get_integer(&a.port, port+1, 0)) {
|
|
if (strcmp(port+1, "kernel") == 0)
|
|
a.port = 0;
|
|
else
|
|
return NULL;
|
|
}
|
|
}
|
|
}
|
|
if (addr[0] && strcmp(addr, "*")) {
|
|
a.addr.bitlen = 32;
|
|
if (nl_proto_a2n(&a.addr.data[0], addr) == -1)
|
|
return NULL;
|
|
}
|
|
fam = AF_NETLINK;
|
|
goto out;
|
|
}
|
|
|
|
if (fam == AF_INET || !strncmp(addr, "inet:", 5)) {
|
|
fam = AF_INET;
|
|
if (!strncmp(addr, "inet:", 5))
|
|
addr += 5;
|
|
} else if (fam == AF_INET6 || !strncmp(addr, "inet6:", 6)) {
|
|
fam = AF_INET6;
|
|
if (!strncmp(addr, "inet6:", 6))
|
|
addr += 6;
|
|
}
|
|
|
|
/* URL-like literal [] */
|
|
if (addr[0] == '[') {
|
|
addr++;
|
|
if ((port = strchr(addr, ']')) == NULL)
|
|
return NULL;
|
|
*port++ = 0;
|
|
} else if (addr[0] == '*') {
|
|
port = addr+1;
|
|
} else {
|
|
port = strrchr(strchr(addr, '/') ? : addr, ':');
|
|
}
|
|
|
|
if (is_port)
|
|
port = addr;
|
|
|
|
if (port && *port) {
|
|
if (*port == ':')
|
|
*port++ = 0;
|
|
|
|
if (*port && *port != '*') {
|
|
if (get_integer(&a.port, port, 0)) {
|
|
struct servent *se1 = NULL;
|
|
struct servent *se2 = NULL;
|
|
|
|
if (current_filter.dbs&(1<<UDP_DB))
|
|
se1 = getservbyname(port, UDP_PROTO);
|
|
if (current_filter.dbs&(1<<TCP_DB))
|
|
se2 = getservbyname(port, TCP_PROTO);
|
|
if (se1 && se2 && se1->s_port != se2->s_port) {
|
|
fprintf(stderr, "Error: ambiguous port \"%s\".\n", port);
|
|
return NULL;
|
|
}
|
|
if (!se1)
|
|
se1 = se2;
|
|
if (se1) {
|
|
a.port = ntohs(se1->s_port);
|
|
} else {
|
|
struct scache *s;
|
|
|
|
for (s = rlist; s; s = s->next) {
|
|
if ((s->proto == UDP_PROTO &&
|
|
(current_filter.dbs&(1<<UDP_DB))) ||
|
|
(s->proto == TCP_PROTO &&
|
|
(current_filter.dbs&(1<<TCP_DB)))) {
|
|
if (s->name && strcmp(s->name, port) == 0) {
|
|
if (a.port > 0 && a.port != s->port) {
|
|
fprintf(stderr, "Error: ambiguous port \"%s\".\n", port);
|
|
return NULL;
|
|
}
|
|
a.port = s->port;
|
|
}
|
|
}
|
|
}
|
|
if (a.port <= 0) {
|
|
fprintf(stderr, "Error: \"%s\" does not look like a port.\n", port);
|
|
return NULL;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (!is_port && *addr && *addr != '*') {
|
|
if (get_prefix_1(&a.addr, addr, fam)) {
|
|
if (get_dns_host(&a, addr, fam)) {
|
|
fprintf(stderr, "Error: an inet prefix is expected rather than \"%s\".\n", addr);
|
|
return NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
out:
|
|
if (fam != AF_UNSPEC) {
|
|
int states = f->states;
|
|
f->families = 0;
|
|
filter_af_set(f, fam);
|
|
filter_states_set(f, states);
|
|
}
|
|
|
|
res = malloc(sizeof(*res));
|
|
if (res)
|
|
memcpy(res, &a, sizeof(a));
|
|
return res;
|
|
}
|
|
|
|
void *parse_markmask(const char *markmask)
|
|
{
|
|
struct aafilter a, *res;
|
|
|
|
if (strchr(markmask, '/')) {
|
|
if (sscanf(markmask, "%i/%i", &a.mark, &a.mask) != 2)
|
|
return NULL;
|
|
} else {
|
|
a.mask = 0xffffffff;
|
|
if (sscanf(markmask, "%i", &a.mark) != 1)
|
|
return NULL;
|
|
}
|
|
|
|
res = malloc(sizeof(*res));
|
|
if (res)
|
|
memcpy(res, &a, sizeof(a));
|
|
return res;
|
|
}
|
|
|
|
static void proc_ctx_print(struct sockstat *s)
|
|
{
|
|
char *buf;
|
|
|
|
if (show_proc_ctx || show_sock_ctx) {
|
|
if (find_entry(s->ino, &buf,
|
|
(show_proc_ctx & show_sock_ctx) ?
|
|
PROC_SOCK_CTX : PROC_CTX) > 0) {
|
|
printf(" users:(%s)", buf);
|
|
free(buf);
|
|
}
|
|
} else if (show_users) {
|
|
if (find_entry(s->ino, &buf, USERS) > 0) {
|
|
printf(" users:(%s)", buf);
|
|
free(buf);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void inet_stats_print(struct sockstat *s, bool v6only)
|
|
{
|
|
sock_state_print(s);
|
|
|
|
inet_addr_print(&s->local, s->lport, s->iface, v6only);
|
|
inet_addr_print(&s->remote, s->rport, 0, v6only);
|
|
|
|
proc_ctx_print(s);
|
|
}
|
|
|
|
static int proc_parse_inet_addr(char *loc, char *rem, int family, struct
|
|
sockstat * s)
|
|
{
|
|
s->local.family = s->remote.family = family;
|
|
if (family == AF_INET) {
|
|
sscanf(loc, "%x:%x", s->local.data, (unsigned *)&s->lport);
|
|
sscanf(rem, "%x:%x", s->remote.data, (unsigned *)&s->rport);
|
|
s->local.bytelen = s->remote.bytelen = 4;
|
|
return 0;
|
|
} else {
|
|
sscanf(loc, "%08x%08x%08x%08x:%x",
|
|
s->local.data,
|
|
s->local.data + 1,
|
|
s->local.data + 2,
|
|
s->local.data + 3,
|
|
&s->lport);
|
|
sscanf(rem, "%08x%08x%08x%08x:%x",
|
|
s->remote.data,
|
|
s->remote.data + 1,
|
|
s->remote.data + 2,
|
|
s->remote.data + 3,
|
|
&s->rport);
|
|
s->local.bytelen = s->remote.bytelen = 16;
|
|
return 0;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
static int proc_inet_split_line(char *line, char **loc, char **rem, char **data)
|
|
{
|
|
char *p;
|
|
|
|
if ((p = strchr(line, ':')) == NULL)
|
|
return -1;
|
|
|
|
*loc = p+2;
|
|
if ((p = strchr(*loc, ':')) == NULL)
|
|
return -1;
|
|
|
|
p[5] = 0;
|
|
*rem = p+6;
|
|
if ((p = strchr(*rem, ':')) == NULL)
|
|
return -1;
|
|
|
|
p[5] = 0;
|
|
*data = p+6;
|
|
return 0;
|
|
}
|
|
|
|
static char *sprint_bw(char *buf, double bw)
|
|
{
|
|
if (bw > 1000000.)
|
|
sprintf(buf, "%.1fM", bw / 1000000.);
|
|
else if (bw > 1000.)
|
|
sprintf(buf, "%.1fK", bw / 1000.);
|
|
else
|
|
sprintf(buf, "%g", bw);
|
|
|
|
return buf;
|
|
}
|
|
|
|
static void sctp_stats_print(struct sctp_info *s)
|
|
{
|
|
if (s->sctpi_tag)
|
|
printf(" tag:%x", s->sctpi_tag);
|
|
if (s->sctpi_state)
|
|
printf(" state:%s", sctp_sstate_name[s->sctpi_state]);
|
|
if (s->sctpi_rwnd)
|
|
printf(" rwnd:%d", s->sctpi_rwnd);
|
|
if (s->sctpi_unackdata)
|
|
printf(" unackdata:%d", s->sctpi_unackdata);
|
|
if (s->sctpi_penddata)
|
|
printf(" penddata:%d", s->sctpi_penddata);
|
|
if (s->sctpi_instrms)
|
|
printf(" instrms:%d", s->sctpi_instrms);
|
|
if (s->sctpi_outstrms)
|
|
printf(" outstrms:%d", s->sctpi_outstrms);
|
|
if (s->sctpi_inqueue)
|
|
printf(" inqueue:%d", s->sctpi_inqueue);
|
|
if (s->sctpi_outqueue)
|
|
printf(" outqueue:%d", s->sctpi_outqueue);
|
|
if (s->sctpi_overall_error)
|
|
printf(" overerr:%d", s->sctpi_overall_error);
|
|
if (s->sctpi_max_burst)
|
|
printf(" maxburst:%d", s->sctpi_max_burst);
|
|
if (s->sctpi_maxseg)
|
|
printf(" maxseg:%d", s->sctpi_maxseg);
|
|
if (s->sctpi_peer_rwnd)
|
|
printf(" prwnd:%d", s->sctpi_peer_rwnd);
|
|
if (s->sctpi_peer_tag)
|
|
printf(" ptag:%x", s->sctpi_peer_tag);
|
|
if (s->sctpi_peer_capable)
|
|
printf(" pcapable:%d", s->sctpi_peer_capable);
|
|
if (s->sctpi_peer_sack)
|
|
printf(" psack:%d", s->sctpi_peer_sack);
|
|
if (s->sctpi_s_autoclose)
|
|
printf(" autoclose:%d", s->sctpi_s_autoclose);
|
|
if (s->sctpi_s_adaptation_ind)
|
|
printf(" adapind:%d", s->sctpi_s_adaptation_ind);
|
|
if (s->sctpi_s_pd_point)
|
|
printf(" pdpoint:%d", s->sctpi_s_pd_point);
|
|
if (s->sctpi_s_nodelay)
|
|
printf(" nodealy:%d", s->sctpi_s_nodelay);
|
|
if (s->sctpi_s_disable_fragments)
|
|
printf(" nofrag:%d", s->sctpi_s_disable_fragments);
|
|
if (s->sctpi_s_v4mapped)
|
|
printf(" v4mapped:%d", s->sctpi_s_v4mapped);
|
|
if (s->sctpi_s_frag_interleave)
|
|
printf(" fraginl:%d", s->sctpi_s_frag_interleave);
|
|
}
|
|
|
|
static void tcp_stats_print(struct tcpstat *s)
|
|
{
|
|
char b1[64];
|
|
|
|
if (s->has_ts_opt)
|
|
printf(" ts");
|
|
if (s->has_sack_opt)
|
|
printf(" sack");
|
|
if (s->has_ecn_opt)
|
|
printf(" ecn");
|
|
if (s->has_ecnseen_opt)
|
|
printf(" ecnseen");
|
|
if (s->has_fastopen_opt)
|
|
printf(" fastopen");
|
|
if (s->cong_alg[0])
|
|
printf(" %s", s->cong_alg);
|
|
if (s->has_wscale_opt)
|
|
printf(" wscale:%d,%d", s->snd_wscale, s->rcv_wscale);
|
|
if (s->rto)
|
|
printf(" rto:%g", s->rto);
|
|
if (s->backoff)
|
|
printf(" backoff:%u", s->backoff);
|
|
if (s->rtt)
|
|
printf(" rtt:%g/%g", s->rtt, s->rttvar);
|
|
if (s->ato)
|
|
printf(" ato:%g", s->ato);
|
|
|
|
if (s->qack)
|
|
printf(" qack:%d", s->qack);
|
|
if (s->qack & 1)
|
|
printf(" bidir");
|
|
|
|
if (s->mss)
|
|
printf(" mss:%d", s->mss);
|
|
if (s->rcv_mss)
|
|
printf(" rcvmss:%d", s->rcv_mss);
|
|
if (s->advmss)
|
|
printf(" advmss:%d", s->advmss);
|
|
if (s->cwnd)
|
|
printf(" cwnd:%u", s->cwnd);
|
|
if (s->ssthresh)
|
|
printf(" ssthresh:%d", s->ssthresh);
|
|
|
|
if (s->bytes_acked)
|
|
printf(" bytes_acked:%llu", s->bytes_acked);
|
|
if (s->bytes_received)
|
|
printf(" bytes_received:%llu", s->bytes_received);
|
|
if (s->segs_out)
|
|
printf(" segs_out:%u", s->segs_out);
|
|
if (s->segs_in)
|
|
printf(" segs_in:%u", s->segs_in);
|
|
if (s->data_segs_out)
|
|
printf(" data_segs_out:%u", s->data_segs_out);
|
|
if (s->data_segs_in)
|
|
printf(" data_segs_in:%u", s->data_segs_in);
|
|
|
|
if (s->dctcp && s->dctcp->enabled) {
|
|
struct dctcpstat *dctcp = s->dctcp;
|
|
|
|
printf(" dctcp:(ce_state:%u,alpha:%u,ab_ecn:%u,ab_tot:%u)",
|
|
dctcp->ce_state, dctcp->alpha, dctcp->ab_ecn,
|
|
dctcp->ab_tot);
|
|
} else if (s->dctcp) {
|
|
printf(" dctcp:fallback_mode");
|
|
}
|
|
|
|
if (s->bbr_info) {
|
|
__u64 bw;
|
|
|
|
bw = s->bbr_info->bbr_bw_hi;
|
|
bw <<= 32;
|
|
bw |= s->bbr_info->bbr_bw_lo;
|
|
|
|
printf(" bbr:(bw:%sbps,mrtt:%g",
|
|
sprint_bw(b1, bw * 8.0),
|
|
(double)s->bbr_info->bbr_min_rtt / 1000.0);
|
|
if (s->bbr_info->bbr_pacing_gain)
|
|
printf(",pacing_gain:%g",
|
|
(double)s->bbr_info->bbr_pacing_gain / 256.0);
|
|
if (s->bbr_info->bbr_cwnd_gain)
|
|
printf(",cwnd_gain:%g",
|
|
(double)s->bbr_info->bbr_cwnd_gain / 256.0);
|
|
printf(")");
|
|
}
|
|
|
|
if (s->send_bps)
|
|
printf(" send %sbps", sprint_bw(b1, s->send_bps));
|
|
if (s->lastsnd)
|
|
printf(" lastsnd:%u", s->lastsnd);
|
|
if (s->lastrcv)
|
|
printf(" lastrcv:%u", s->lastrcv);
|
|
if (s->lastack)
|
|
printf(" lastack:%u", s->lastack);
|
|
|
|
if (s->pacing_rate) {
|
|
printf(" pacing_rate %sbps", sprint_bw(b1, s->pacing_rate));
|
|
if (s->pacing_rate_max)
|
|
printf("/%sbps", sprint_bw(b1,
|
|
s->pacing_rate_max));
|
|
}
|
|
|
|
if (s->delivery_rate)
|
|
printf(" delivery_rate %sbps", sprint_bw(b1, s->delivery_rate));
|
|
if (s->app_limited)
|
|
printf(" app_limited");
|
|
|
|
if (s->busy_time) {
|
|
printf(" busy:%llums", s->busy_time / 1000);
|
|
if (s->rwnd_limited)
|
|
printf(" rwnd_limited:%llums(%.1f%%)",
|
|
s->rwnd_limited / 1000,
|
|
100.0 * s->rwnd_limited / s->busy_time);
|
|
if (s->sndbuf_limited)
|
|
printf(" sndbuf_limited:%llums(%.1f%%)",
|
|
s->sndbuf_limited / 1000,
|
|
100.0 * s->sndbuf_limited / s->busy_time);
|
|
}
|
|
|
|
if (s->unacked)
|
|
printf(" unacked:%u", s->unacked);
|
|
if (s->retrans || s->retrans_total)
|
|
printf(" retrans:%u/%u", s->retrans, s->retrans_total);
|
|
if (s->lost)
|
|
printf(" lost:%u", s->lost);
|
|
if (s->sacked && s->ss.state != SS_LISTEN)
|
|
printf(" sacked:%u", s->sacked);
|
|
if (s->fackets)
|
|
printf(" fackets:%u", s->fackets);
|
|
if (s->reordering != 3)
|
|
printf(" reordering:%d", s->reordering);
|
|
if (s->rcv_rtt)
|
|
printf(" rcv_rtt:%g", s->rcv_rtt);
|
|
if (s->rcv_space)
|
|
printf(" rcv_space:%d", s->rcv_space);
|
|
if (s->not_sent)
|
|
printf(" notsent:%u", s->not_sent);
|
|
if (s->min_rtt)
|
|
printf(" minrtt:%g", s->min_rtt);
|
|
}
|
|
|
|
static void tcp_timer_print(struct tcpstat *s)
|
|
{
|
|
static const char * const tmr_name[] = {
|
|
"off",
|
|
"on",
|
|
"keepalive",
|
|
"timewait",
|
|
"persist",
|
|
"unknown"
|
|
};
|
|
|
|
if (s->timer) {
|
|
if (s->timer > 4)
|
|
s->timer = 5;
|
|
printf(" timer:(%s,%s,%d)",
|
|
tmr_name[s->timer],
|
|
print_ms_timer(s->timeout),
|
|
s->retrans);
|
|
}
|
|
}
|
|
|
|
static void sctp_timer_print(struct tcpstat *s)
|
|
{
|
|
if (s->timer)
|
|
printf(" timer:(T3_RTX,%s,%d)",
|
|
print_ms_timer(s->timeout), s->retrans);
|
|
}
|
|
|
|
static int tcp_show_line(char *line, const struct filter *f, int family)
|
|
{
|
|
int rto = 0, ato = 0;
|
|
struct tcpstat s = {};
|
|
char *loc, *rem, *data;
|
|
char opt[256];
|
|
int n;
|
|
int hz = get_user_hz();
|
|
|
|
if (proc_inet_split_line(line, &loc, &rem, &data))
|
|
return -1;
|
|
|
|
int state = (data[1] >= 'A') ? (data[1] - 'A' + 10) : (data[1] - '0');
|
|
|
|
if (!(f->states & (1 << state)))
|
|
return 0;
|
|
|
|
proc_parse_inet_addr(loc, rem, family, &s.ss);
|
|
|
|
if (f->f && run_ssfilter(f->f, &s.ss) == 0)
|
|
return 0;
|
|
|
|
opt[0] = 0;
|
|
n = sscanf(data, "%x %x:%x %x:%x %x %d %d %u %d %llx %d %d %d %u %d %[^\n]\n",
|
|
&s.ss.state, &s.ss.wq, &s.ss.rq,
|
|
&s.timer, &s.timeout, &s.retrans, &s.ss.uid, &s.probes,
|
|
&s.ss.ino, &s.ss.refcnt, &s.ss.sk, &rto, &ato, &s.qack, &s.cwnd,
|
|
&s.ssthresh, opt);
|
|
|
|
if (n < 17)
|
|
opt[0] = 0;
|
|
|
|
if (n < 12) {
|
|
rto = 0;
|
|
s.cwnd = 2;
|
|
s.ssthresh = -1;
|
|
ato = s.qack = 0;
|
|
}
|
|
|
|
s.retrans = s.timer != 1 ? s.probes : s.retrans;
|
|
s.timeout = (s.timeout * 1000 + hz - 1) / hz;
|
|
s.ato = (double)ato / hz;
|
|
s.qack /= 2;
|
|
s.rto = (double)rto;
|
|
s.ssthresh = s.ssthresh == -1 ? 0 : s.ssthresh;
|
|
s.rto = s.rto != 3 * hz ? s.rto / hz : 0;
|
|
s.ss.type = IPPROTO_TCP;
|
|
|
|
inet_stats_print(&s.ss, false);
|
|
|
|
if (show_options)
|
|
tcp_timer_print(&s);
|
|
|
|
if (show_details) {
|
|
sock_details_print(&s.ss);
|
|
if (opt[0])
|
|
printf(" opt:\"%s\"", opt);
|
|
}
|
|
|
|
if (show_tcpinfo)
|
|
tcp_stats_print(&s);
|
|
|
|
printf("\n");
|
|
return 0;
|
|
}
|
|
|
|
static int generic_record_read(FILE *fp,
|
|
int (*worker)(char*, const struct filter *, int),
|
|
const struct filter *f, int fam)
|
|
{
|
|
char line[256];
|
|
|
|
/* skip header */
|
|
if (fgets(line, sizeof(line), fp) == NULL)
|
|
goto outerr;
|
|
|
|
while (fgets(line, sizeof(line), fp) != NULL) {
|
|
int n = strlen(line);
|
|
|
|
if (n == 0 || line[n-1] != '\n') {
|
|
errno = -EINVAL;
|
|
return -1;
|
|
}
|
|
line[n-1] = 0;
|
|
|
|
if (worker(line, f, fam) < 0)
|
|
return 0;
|
|
}
|
|
outerr:
|
|
|
|
return ferror(fp) ? -1 : 0;
|
|
}
|
|
|
|
static void print_skmeminfo(struct rtattr *tb[], int attrtype)
|
|
{
|
|
const __u32 *skmeminfo;
|
|
|
|
if (!tb[attrtype]) {
|
|
if (attrtype == INET_DIAG_SKMEMINFO) {
|
|
if (!tb[INET_DIAG_MEMINFO])
|
|
return;
|
|
|
|
const struct inet_diag_meminfo *minfo =
|
|
RTA_DATA(tb[INET_DIAG_MEMINFO]);
|
|
|
|
printf(" mem:(r%u,w%u,f%u,t%u)",
|
|
minfo->idiag_rmem,
|
|
minfo->idiag_wmem,
|
|
minfo->idiag_fmem,
|
|
minfo->idiag_tmem);
|
|
}
|
|
return;
|
|
}
|
|
|
|
skmeminfo = RTA_DATA(tb[attrtype]);
|
|
|
|
printf(" skmem:(r%u,rb%u,t%u,tb%u,f%u,w%u,o%u",
|
|
skmeminfo[SK_MEMINFO_RMEM_ALLOC],
|
|
skmeminfo[SK_MEMINFO_RCVBUF],
|
|
skmeminfo[SK_MEMINFO_WMEM_ALLOC],
|
|
skmeminfo[SK_MEMINFO_SNDBUF],
|
|
skmeminfo[SK_MEMINFO_FWD_ALLOC],
|
|
skmeminfo[SK_MEMINFO_WMEM_QUEUED],
|
|
skmeminfo[SK_MEMINFO_OPTMEM]);
|
|
|
|
if (RTA_PAYLOAD(tb[attrtype]) >=
|
|
(SK_MEMINFO_BACKLOG + 1) * sizeof(__u32))
|
|
printf(",bl%u", skmeminfo[SK_MEMINFO_BACKLOG]);
|
|
|
|
if (RTA_PAYLOAD(tb[attrtype]) >=
|
|
(SK_MEMINFO_DROPS + 1) * sizeof(__u32))
|
|
printf(",d%u", skmeminfo[SK_MEMINFO_DROPS]);
|
|
|
|
printf(")");
|
|
}
|
|
|
|
static void print_md5sig(struct tcp_diag_md5sig *sig)
|
|
{
|
|
printf("%s/%d=",
|
|
format_host(sig->tcpm_family,
|
|
sig->tcpm_family == AF_INET6 ? 16 : 4,
|
|
&sig->tcpm_addr),
|
|
sig->tcpm_prefixlen);
|
|
print_escape_buf(sig->tcpm_key, sig->tcpm_keylen, " ,");
|
|
}
|
|
|
|
#define TCPI_HAS_OPT(info, opt) !!(info->tcpi_options & (opt))
|
|
|
|
static void tcp_show_info(const struct nlmsghdr *nlh, struct inet_diag_msg *r,
|
|
struct rtattr *tb[])
|
|
{
|
|
double rtt = 0;
|
|
struct tcpstat s = {};
|
|
|
|
s.ss.state = r->idiag_state;
|
|
|
|
print_skmeminfo(tb, INET_DIAG_SKMEMINFO);
|
|
|
|
if (tb[INET_DIAG_INFO]) {
|
|
struct tcp_info *info;
|
|
int len = RTA_PAYLOAD(tb[INET_DIAG_INFO]);
|
|
|
|
/* workaround for older kernels with less fields */
|
|
if (len < sizeof(*info)) {
|
|
info = alloca(sizeof(*info));
|
|
memcpy(info, RTA_DATA(tb[INET_DIAG_INFO]), len);
|
|
memset((char *)info + len, 0, sizeof(*info) - len);
|
|
} else
|
|
info = RTA_DATA(tb[INET_DIAG_INFO]);
|
|
|
|
if (show_options) {
|
|
s.has_ts_opt = TCPI_HAS_OPT(info, TCPI_OPT_TIMESTAMPS);
|
|
s.has_sack_opt = TCPI_HAS_OPT(info, TCPI_OPT_SACK);
|
|
s.has_ecn_opt = TCPI_HAS_OPT(info, TCPI_OPT_ECN);
|
|
s.has_ecnseen_opt = TCPI_HAS_OPT(info, TCPI_OPT_ECN_SEEN);
|
|
s.has_fastopen_opt = TCPI_HAS_OPT(info, TCPI_OPT_SYN_DATA);
|
|
}
|
|
|
|
if (tb[INET_DIAG_CONG])
|
|
strncpy(s.cong_alg,
|
|
rta_getattr_str(tb[INET_DIAG_CONG]),
|
|
sizeof(s.cong_alg) - 1);
|
|
|
|
if (TCPI_HAS_OPT(info, TCPI_OPT_WSCALE)) {
|
|
s.has_wscale_opt = true;
|
|
s.snd_wscale = info->tcpi_snd_wscale;
|
|
s.rcv_wscale = info->tcpi_rcv_wscale;
|
|
}
|
|
|
|
if (info->tcpi_rto && info->tcpi_rto != 3000000)
|
|
s.rto = (double)info->tcpi_rto / 1000;
|
|
|
|
s.backoff = info->tcpi_backoff;
|
|
s.rtt = (double)info->tcpi_rtt / 1000;
|
|
s.rttvar = (double)info->tcpi_rttvar / 1000;
|
|
s.ato = (double)info->tcpi_ato / 1000;
|
|
s.mss = info->tcpi_snd_mss;
|
|
s.rcv_mss = info->tcpi_rcv_mss;
|
|
s.advmss = info->tcpi_advmss;
|
|
s.rcv_space = info->tcpi_rcv_space;
|
|
s.rcv_rtt = (double)info->tcpi_rcv_rtt / 1000;
|
|
s.lastsnd = info->tcpi_last_data_sent;
|
|
s.lastrcv = info->tcpi_last_data_recv;
|
|
s.lastack = info->tcpi_last_ack_recv;
|
|
s.unacked = info->tcpi_unacked;
|
|
s.retrans = info->tcpi_retrans;
|
|
s.retrans_total = info->tcpi_total_retrans;
|
|
s.lost = info->tcpi_lost;
|
|
s.sacked = info->tcpi_sacked;
|
|
s.fackets = info->tcpi_fackets;
|
|
s.reordering = info->tcpi_reordering;
|
|
s.rcv_space = info->tcpi_rcv_space;
|
|
s.cwnd = info->tcpi_snd_cwnd;
|
|
|
|
if (info->tcpi_snd_ssthresh < 0xFFFF)
|
|
s.ssthresh = info->tcpi_snd_ssthresh;
|
|
|
|
rtt = (double) info->tcpi_rtt;
|
|
if (tb[INET_DIAG_VEGASINFO]) {
|
|
const struct tcpvegas_info *vinfo
|
|
= RTA_DATA(tb[INET_DIAG_VEGASINFO]);
|
|
|
|
if (vinfo->tcpv_enabled &&
|
|
vinfo->tcpv_rtt && vinfo->tcpv_rtt != 0x7fffffff)
|
|
rtt = vinfo->tcpv_rtt;
|
|
}
|
|
|
|
if (tb[INET_DIAG_DCTCPINFO]) {
|
|
struct dctcpstat *dctcp = malloc(sizeof(struct
|
|
dctcpstat));
|
|
|
|
const struct tcp_dctcp_info *dinfo
|
|
= RTA_DATA(tb[INET_DIAG_DCTCPINFO]);
|
|
|
|
dctcp->enabled = !!dinfo->dctcp_enabled;
|
|
dctcp->ce_state = dinfo->dctcp_ce_state;
|
|
dctcp->alpha = dinfo->dctcp_alpha;
|
|
dctcp->ab_ecn = dinfo->dctcp_ab_ecn;
|
|
dctcp->ab_tot = dinfo->dctcp_ab_tot;
|
|
s.dctcp = dctcp;
|
|
}
|
|
|
|
if (tb[INET_DIAG_BBRINFO]) {
|
|
const void *bbr_info = RTA_DATA(tb[INET_DIAG_BBRINFO]);
|
|
int len = min(RTA_PAYLOAD(tb[INET_DIAG_BBRINFO]),
|
|
sizeof(*s.bbr_info));
|
|
|
|
s.bbr_info = calloc(1, sizeof(*s.bbr_info));
|
|
if (s.bbr_info && bbr_info)
|
|
memcpy(s.bbr_info, bbr_info, len);
|
|
}
|
|
|
|
if (rtt > 0 && info->tcpi_snd_mss && info->tcpi_snd_cwnd) {
|
|
s.send_bps = (double) info->tcpi_snd_cwnd *
|
|
(double)info->tcpi_snd_mss * 8000000. / rtt;
|
|
}
|
|
|
|
if (info->tcpi_pacing_rate &&
|
|
info->tcpi_pacing_rate != ~0ULL) {
|
|
s.pacing_rate = info->tcpi_pacing_rate * 8.;
|
|
|
|
if (info->tcpi_max_pacing_rate &&
|
|
info->tcpi_max_pacing_rate != ~0ULL)
|
|
s.pacing_rate_max = info->tcpi_max_pacing_rate * 8.;
|
|
}
|
|
s.bytes_acked = info->tcpi_bytes_acked;
|
|
s.bytes_received = info->tcpi_bytes_received;
|
|
s.segs_out = info->tcpi_segs_out;
|
|
s.segs_in = info->tcpi_segs_in;
|
|
s.data_segs_out = info->tcpi_data_segs_out;
|
|
s.data_segs_in = info->tcpi_data_segs_in;
|
|
s.not_sent = info->tcpi_notsent_bytes;
|
|
if (info->tcpi_min_rtt && info->tcpi_min_rtt != ~0U)
|
|
s.min_rtt = (double) info->tcpi_min_rtt / 1000;
|
|
s.delivery_rate = info->tcpi_delivery_rate * 8.;
|
|
s.app_limited = info->tcpi_delivery_rate_app_limited;
|
|
s.busy_time = info->tcpi_busy_time;
|
|
s.rwnd_limited = info->tcpi_rwnd_limited;
|
|
s.sndbuf_limited = info->tcpi_sndbuf_limited;
|
|
tcp_stats_print(&s);
|
|
free(s.dctcp);
|
|
free(s.bbr_info);
|
|
}
|
|
if (tb[INET_DIAG_MD5SIG]) {
|
|
struct tcp_diag_md5sig *sig = RTA_DATA(tb[INET_DIAG_MD5SIG]);
|
|
int len = RTA_PAYLOAD(tb[INET_DIAG_MD5SIG]);
|
|
|
|
printf(" md5keys:");
|
|
print_md5sig(sig++);
|
|
for (len -= sizeof(*sig); len > 0; len -= sizeof(*sig)) {
|
|
printf(",");
|
|
print_md5sig(sig++);
|
|
}
|
|
}
|
|
}
|
|
|
|
static const char *format_host_sa(struct sockaddr_storage *sa)
|
|
{
|
|
union {
|
|
struct sockaddr_in sin;
|
|
struct sockaddr_in6 sin6;
|
|
} *saddr = (void *)sa;
|
|
|
|
switch (sa->ss_family) {
|
|
case AF_INET:
|
|
return format_host(AF_INET, 4, &saddr->sin.sin_addr);
|
|
case AF_INET6:
|
|
return format_host(AF_INET6, 16, &saddr->sin6.sin6_addr);
|
|
default:
|
|
return "";
|
|
}
|
|
}
|
|
|
|
static void sctp_show_info(const struct nlmsghdr *nlh, struct inet_diag_msg *r,
|
|
struct rtattr *tb[])
|
|
{
|
|
struct sockaddr_storage *sa;
|
|
int len;
|
|
|
|
print_skmeminfo(tb, INET_DIAG_SKMEMINFO);
|
|
|
|
if (tb[INET_DIAG_LOCALS]) {
|
|
len = RTA_PAYLOAD(tb[INET_DIAG_LOCALS]);
|
|
sa = RTA_DATA(tb[INET_DIAG_LOCALS]);
|
|
|
|
printf("locals:%s", format_host_sa(sa));
|
|
for (sa++, len -= sizeof(*sa); len > 0; sa++, len -= sizeof(*sa))
|
|
printf(",%s", format_host_sa(sa));
|
|
|
|
}
|
|
if (tb[INET_DIAG_PEERS]) {
|
|
len = RTA_PAYLOAD(tb[INET_DIAG_PEERS]);
|
|
sa = RTA_DATA(tb[INET_DIAG_PEERS]);
|
|
|
|
printf(" peers:%s", format_host_sa(sa));
|
|
for (sa++, len -= sizeof(*sa); len > 0; sa++, len -= sizeof(*sa))
|
|
printf(",%s", format_host_sa(sa));
|
|
}
|
|
if (tb[INET_DIAG_INFO]) {
|
|
struct sctp_info *info;
|
|
len = RTA_PAYLOAD(tb[INET_DIAG_INFO]);
|
|
|
|
/* workaround for older kernels with less fields */
|
|
if (len < sizeof(*info)) {
|
|
info = alloca(sizeof(*info));
|
|
memcpy(info, RTA_DATA(tb[INET_DIAG_INFO]), len);
|
|
memset((char *)info + len, 0, sizeof(*info) - len);
|
|
} else
|
|
info = RTA_DATA(tb[INET_DIAG_INFO]);
|
|
|
|
sctp_stats_print(info);
|
|
}
|
|
}
|
|
|
|
static void parse_diag_msg(struct nlmsghdr *nlh, struct sockstat *s)
|
|
{
|
|
struct rtattr *tb[INET_DIAG_MAX+1];
|
|
struct inet_diag_msg *r = NLMSG_DATA(nlh);
|
|
|
|
parse_rtattr(tb, INET_DIAG_MAX, (struct rtattr *)(r+1),
|
|
nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
|
|
|
|
s->state = r->idiag_state;
|
|
s->local.family = s->remote.family = r->idiag_family;
|
|
s->lport = ntohs(r->id.idiag_sport);
|
|
s->rport = ntohs(r->id.idiag_dport);
|
|
s->wq = r->idiag_wqueue;
|
|
s->rq = r->idiag_rqueue;
|
|
s->ino = r->idiag_inode;
|
|
s->uid = r->idiag_uid;
|
|
s->iface = r->id.idiag_if;
|
|
s->sk = cookie_sk_get(&r->id.idiag_cookie[0]);
|
|
|
|
s->mark = 0;
|
|
if (tb[INET_DIAG_MARK])
|
|
s->mark = rta_getattr_u32(tb[INET_DIAG_MARK]);
|
|
if (tb[INET_DIAG_PROTOCOL])
|
|
s->raw_prot = rta_getattr_u8(tb[INET_DIAG_PROTOCOL]);
|
|
else
|
|
s->raw_prot = 0;
|
|
|
|
if (s->local.family == AF_INET)
|
|
s->local.bytelen = s->remote.bytelen = 4;
|
|
else
|
|
s->local.bytelen = s->remote.bytelen = 16;
|
|
|
|
memcpy(s->local.data, r->id.idiag_src, s->local.bytelen);
|
|
memcpy(s->remote.data, r->id.idiag_dst, s->local.bytelen);
|
|
}
|
|
|
|
static int inet_show_sock(struct nlmsghdr *nlh,
|
|
struct sockstat *s)
|
|
{
|
|
struct rtattr *tb[INET_DIAG_MAX+1];
|
|
struct inet_diag_msg *r = NLMSG_DATA(nlh);
|
|
unsigned char v6only = 0;
|
|
|
|
parse_rtattr(tb, INET_DIAG_MAX, (struct rtattr *)(r+1),
|
|
nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
|
|
|
|
if (tb[INET_DIAG_PROTOCOL])
|
|
s->type = rta_getattr_u8(tb[INET_DIAG_PROTOCOL]);
|
|
|
|
if (s->local.family == AF_INET6 && tb[INET_DIAG_SKV6ONLY])
|
|
v6only = rta_getattr_u8(tb[INET_DIAG_SKV6ONLY]);
|
|
|
|
inet_stats_print(s, v6only);
|
|
|
|
if (show_options) {
|
|
struct tcpstat t = {};
|
|
|
|
t.timer = r->idiag_timer;
|
|
t.timeout = r->idiag_expires;
|
|
t.retrans = r->idiag_retrans;
|
|
if (s->type == IPPROTO_SCTP)
|
|
sctp_timer_print(&t);
|
|
else
|
|
tcp_timer_print(&t);
|
|
}
|
|
|
|
if (show_details) {
|
|
sock_details_print(s);
|
|
if (s->local.family == AF_INET6 && tb[INET_DIAG_SKV6ONLY])
|
|
printf(" v6only:%u", v6only);
|
|
|
|
if (tb[INET_DIAG_SHUTDOWN]) {
|
|
unsigned char mask;
|
|
|
|
mask = rta_getattr_u8(tb[INET_DIAG_SHUTDOWN]);
|
|
printf(" %c-%c", mask & 1 ? '-' : '<', mask & 2 ? '-' : '>');
|
|
}
|
|
}
|
|
|
|
if (show_mem || (show_tcpinfo && s->type != IPPROTO_UDP)) {
|
|
printf("\n\t");
|
|
if (s->type == IPPROTO_SCTP)
|
|
sctp_show_info(nlh, r, tb);
|
|
else
|
|
tcp_show_info(nlh, r, tb);
|
|
}
|
|
sctp_ino = s->ino;
|
|
|
|
printf("\n");
|
|
return 0;
|
|
}
|
|
|
|
static int tcpdiag_send(int fd, int protocol, struct filter *f)
|
|
{
|
|
struct sockaddr_nl nladdr = { .nl_family = AF_NETLINK };
|
|
struct {
|
|
struct nlmsghdr nlh;
|
|
struct inet_diag_req r;
|
|
} req = {
|
|
.nlh.nlmsg_len = sizeof(req),
|
|
.nlh.nlmsg_flags = NLM_F_ROOT | NLM_F_MATCH | NLM_F_REQUEST,
|
|
.nlh.nlmsg_seq = MAGIC_SEQ,
|
|
.r.idiag_family = AF_INET,
|
|
.r.idiag_states = f->states,
|
|
};
|
|
char *bc = NULL;
|
|
int bclen;
|
|
struct msghdr msg;
|
|
struct rtattr rta;
|
|
struct iovec iov[3];
|
|
int iovlen = 1;
|
|
|
|
if (protocol == IPPROTO_UDP)
|
|
return -1;
|
|
|
|
if (protocol == IPPROTO_TCP)
|
|
req.nlh.nlmsg_type = TCPDIAG_GETSOCK;
|
|
else
|
|
req.nlh.nlmsg_type = DCCPDIAG_GETSOCK;
|
|
if (show_mem) {
|
|
req.r.idiag_ext |= (1<<(INET_DIAG_MEMINFO-1));
|
|
req.r.idiag_ext |= (1<<(INET_DIAG_SKMEMINFO-1));
|
|
}
|
|
|
|
if (show_tcpinfo) {
|
|
req.r.idiag_ext |= (1<<(INET_DIAG_INFO-1));
|
|
req.r.idiag_ext |= (1<<(INET_DIAG_VEGASINFO-1));
|
|
req.r.idiag_ext |= (1<<(INET_DIAG_CONG-1));
|
|
}
|
|
|
|
iov[0] = (struct iovec){
|
|
.iov_base = &req,
|
|
.iov_len = sizeof(req)
|
|
};
|
|
if (f->f) {
|
|
bclen = ssfilter_bytecompile(f->f, &bc);
|
|
if (bclen) {
|
|
rta.rta_type = INET_DIAG_REQ_BYTECODE;
|
|
rta.rta_len = RTA_LENGTH(bclen);
|
|
iov[1] = (struct iovec){ &rta, sizeof(rta) };
|
|
iov[2] = (struct iovec){ bc, bclen };
|
|
req.nlh.nlmsg_len += RTA_LENGTH(bclen);
|
|
iovlen = 3;
|
|
}
|
|
}
|
|
|
|
msg = (struct msghdr) {
|
|
.msg_name = (void *)&nladdr,
|
|
.msg_namelen = sizeof(nladdr),
|
|
.msg_iov = iov,
|
|
.msg_iovlen = iovlen,
|
|
};
|
|
|
|
if (sendmsg(fd, &msg, 0) < 0) {
|
|
close(fd);
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sockdiag_send(int family, int fd, int protocol, struct filter *f)
|
|
{
|
|
struct sockaddr_nl nladdr = { .nl_family = AF_NETLINK };
|
|
DIAG_REQUEST(req, struct inet_diag_req_v2 r);
|
|
char *bc = NULL;
|
|
int bclen;
|
|
struct msghdr msg;
|
|
struct rtattr rta;
|
|
struct iovec iov[3];
|
|
int iovlen = 1;
|
|
|
|
if (family == PF_UNSPEC)
|
|
return tcpdiag_send(fd, protocol, f);
|
|
|
|
memset(&req.r, 0, sizeof(req.r));
|
|
req.r.sdiag_family = family;
|
|
req.r.sdiag_protocol = protocol;
|
|
req.r.idiag_states = f->states;
|
|
if (show_mem) {
|
|
req.r.idiag_ext |= (1<<(INET_DIAG_MEMINFO-1));
|
|
req.r.idiag_ext |= (1<<(INET_DIAG_SKMEMINFO-1));
|
|
}
|
|
|
|
if (show_tcpinfo) {
|
|
req.r.idiag_ext |= (1<<(INET_DIAG_INFO-1));
|
|
req.r.idiag_ext |= (1<<(INET_DIAG_VEGASINFO-1));
|
|
req.r.idiag_ext |= (1<<(INET_DIAG_CONG-1));
|
|
}
|
|
|
|
iov[0] = (struct iovec){
|
|
.iov_base = &req,
|
|
.iov_len = sizeof(req)
|
|
};
|
|
if (f->f) {
|
|
bclen = ssfilter_bytecompile(f->f, &bc);
|
|
if (bclen) {
|
|
rta.rta_type = INET_DIAG_REQ_BYTECODE;
|
|
rta.rta_len = RTA_LENGTH(bclen);
|
|
iov[1] = (struct iovec){ &rta, sizeof(rta) };
|
|
iov[2] = (struct iovec){ bc, bclen };
|
|
req.nlh.nlmsg_len += RTA_LENGTH(bclen);
|
|
iovlen = 3;
|
|
}
|
|
}
|
|
|
|
msg = (struct msghdr) {
|
|
.msg_name = (void *)&nladdr,
|
|
.msg_namelen = sizeof(nladdr),
|
|
.msg_iov = iov,
|
|
.msg_iovlen = iovlen,
|
|
};
|
|
|
|
if (sendmsg(fd, &msg, 0) < 0) {
|
|
close(fd);
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
struct inet_diag_arg {
|
|
struct filter *f;
|
|
int protocol;
|
|
struct rtnl_handle *rth;
|
|
};
|
|
|
|
static int kill_inet_sock(struct nlmsghdr *h, void *arg, struct sockstat *s)
|
|
{
|
|
struct inet_diag_msg *d = NLMSG_DATA(h);
|
|
struct inet_diag_arg *diag_arg = arg;
|
|
struct rtnl_handle *rth = diag_arg->rth;
|
|
|
|
DIAG_REQUEST(req, struct inet_diag_req_v2 r);
|
|
|
|
req.nlh.nlmsg_type = SOCK_DESTROY;
|
|
req.nlh.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK;
|
|
req.nlh.nlmsg_seq = ++rth->seq;
|
|
req.r.sdiag_family = d->idiag_family;
|
|
req.r.sdiag_protocol = diag_arg->protocol;
|
|
req.r.id = d->id;
|
|
|
|
if (diag_arg->protocol == IPPROTO_RAW) {
|
|
struct inet_diag_req_raw *raw = (void *)&req.r;
|
|
|
|
BUILD_BUG_ON(sizeof(req.r) != sizeof(*raw));
|
|
raw->sdiag_raw_protocol = s->raw_prot;
|
|
}
|
|
|
|
return rtnl_talk(rth, &req.nlh, NULL, 0);
|
|
}
|
|
|
|
static int show_one_inet_sock(const struct sockaddr_nl *addr,
|
|
struct nlmsghdr *h, void *arg)
|
|
{
|
|
int err;
|
|
struct inet_diag_arg *diag_arg = arg;
|
|
struct inet_diag_msg *r = NLMSG_DATA(h);
|
|
struct sockstat s = {};
|
|
|
|
if (!(diag_arg->f->families & (1 << r->idiag_family)))
|
|
return 0;
|
|
|
|
parse_diag_msg(h, &s);
|
|
s.type = diag_arg->protocol;
|
|
|
|
if (diag_arg->f->f && run_ssfilter(diag_arg->f->f, &s) == 0)
|
|
return 0;
|
|
|
|
if (diag_arg->f->kill && kill_inet_sock(h, arg, &s) != 0) {
|
|
if (errno == EOPNOTSUPP || errno == ENOENT) {
|
|
/* Socket can't be closed, or is already closed. */
|
|
return 0;
|
|
} else {
|
|
perror("SOCK_DESTROY answers");
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
err = inet_show_sock(h, &s);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int inet_show_netlink(struct filter *f, FILE *dump_fp, int protocol)
|
|
{
|
|
int err = 0;
|
|
struct rtnl_handle rth, rth2;
|
|
int family = PF_INET;
|
|
struct inet_diag_arg arg = { .f = f, .protocol = protocol };
|
|
|
|
if (rtnl_open_byproto(&rth, 0, NETLINK_SOCK_DIAG))
|
|
return -1;
|
|
|
|
if (f->kill) {
|
|
if (rtnl_open_byproto(&rth2, 0, NETLINK_SOCK_DIAG)) {
|
|
rtnl_close(&rth);
|
|
return -1;
|
|
}
|
|
arg.rth = &rth2;
|
|
}
|
|
|
|
rth.dump = MAGIC_SEQ;
|
|
rth.dump_fp = dump_fp;
|
|
if (preferred_family == PF_INET6)
|
|
family = PF_INET6;
|
|
|
|
again:
|
|
if ((err = sockdiag_send(family, rth.fd, protocol, f)))
|
|
goto Exit;
|
|
|
|
if ((err = rtnl_dump_filter(&rth, show_one_inet_sock, &arg))) {
|
|
if (family != PF_UNSPEC) {
|
|
family = PF_UNSPEC;
|
|
goto again;
|
|
}
|
|
goto Exit;
|
|
}
|
|
if (family == PF_INET && preferred_family != PF_INET) {
|
|
family = PF_INET6;
|
|
goto again;
|
|
}
|
|
|
|
Exit:
|
|
rtnl_close(&rth);
|
|
if (arg.rth)
|
|
rtnl_close(arg.rth);
|
|
return err;
|
|
}
|
|
|
|
static int tcp_show_netlink_file(struct filter *f)
|
|
{
|
|
FILE *fp;
|
|
char buf[16384];
|
|
int err = -1;
|
|
|
|
if ((fp = fopen(getenv("TCPDIAG_FILE"), "r")) == NULL) {
|
|
perror("fopen($TCPDIAG_FILE)");
|
|
return err;
|
|
}
|
|
|
|
while (1) {
|
|
int status, err2;
|
|
struct nlmsghdr *h = (struct nlmsghdr *)buf;
|
|
struct sockstat s = {};
|
|
|
|
status = fread(buf, 1, sizeof(*h), fp);
|
|
if (status < 0) {
|
|
perror("Reading header from $TCPDIAG_FILE");
|
|
break;
|
|
}
|
|
if (status != sizeof(*h)) {
|
|
perror("Unexpected EOF reading $TCPDIAG_FILE");
|
|
break;
|
|
}
|
|
|
|
status = fread(h+1, 1, NLMSG_ALIGN(h->nlmsg_len-sizeof(*h)), fp);
|
|
|
|
if (status < 0) {
|
|
perror("Reading $TCPDIAG_FILE");
|
|
break;
|
|
}
|
|
if (status + sizeof(*h) < h->nlmsg_len) {
|
|
perror("Unexpected EOF reading $TCPDIAG_FILE");
|
|
break;
|
|
}
|
|
|
|
/* The only legal exit point */
|
|
if (h->nlmsg_type == NLMSG_DONE) {
|
|
err = 0;
|
|
break;
|
|
}
|
|
|
|
if (h->nlmsg_type == NLMSG_ERROR) {
|
|
struct nlmsgerr *err = (struct nlmsgerr *)NLMSG_DATA(h);
|
|
|
|
if (h->nlmsg_len < NLMSG_LENGTH(sizeof(struct nlmsgerr))) {
|
|
fprintf(stderr, "ERROR truncated\n");
|
|
} else {
|
|
errno = -err->error;
|
|
perror("TCPDIAG answered");
|
|
}
|
|
break;
|
|
}
|
|
|
|
parse_diag_msg(h, &s);
|
|
s.type = IPPROTO_TCP;
|
|
|
|
if (f && f->f && run_ssfilter(f->f, &s) == 0)
|
|
continue;
|
|
|
|
err2 = inet_show_sock(h, &s);
|
|
if (err2 < 0) {
|
|
err = err2;
|
|
break;
|
|
}
|
|
}
|
|
|
|
fclose(fp);
|
|
return err;
|
|
}
|
|
|
|
static int tcp_show(struct filter *f)
|
|
{
|
|
FILE *fp = NULL;
|
|
char *buf = NULL;
|
|
int bufsize = 64*1024;
|
|
|
|
if (!filter_af_get(f, AF_INET) && !filter_af_get(f, AF_INET6))
|
|
return 0;
|
|
|
|
dg_proto = TCP_PROTO;
|
|
|
|
if (getenv("TCPDIAG_FILE"))
|
|
return tcp_show_netlink_file(f);
|
|
|
|
if (!getenv("PROC_NET_TCP") && !getenv("PROC_ROOT")
|
|
&& inet_show_netlink(f, NULL, IPPROTO_TCP) == 0)
|
|
return 0;
|
|
|
|
/* Sigh... We have to parse /proc/net/tcp... */
|
|
|
|
|
|
/* Estimate amount of sockets and try to allocate
|
|
* huge buffer to read all the table at one read.
|
|
* Limit it by 16MB though. The assumption is: as soon as
|
|
* kernel was able to hold information about N connections,
|
|
* it is able to give us some memory for snapshot.
|
|
*/
|
|
if (1) {
|
|
get_slabstat(&slabstat);
|
|
|
|
int guess = slabstat.socks+slabstat.tcp_syns;
|
|
|
|
if (f->states&(1<<SS_TIME_WAIT))
|
|
guess += slabstat.tcp_tws;
|
|
if (guess > (16*1024*1024)/128)
|
|
guess = (16*1024*1024)/128;
|
|
guess *= 128;
|
|
if (guess > bufsize)
|
|
bufsize = guess;
|
|
}
|
|
while (bufsize >= 64*1024) {
|
|
if ((buf = malloc(bufsize)) != NULL)
|
|
break;
|
|
bufsize /= 2;
|
|
}
|
|
if (buf == NULL) {
|
|
errno = ENOMEM;
|
|
return -1;
|
|
}
|
|
|
|
if (f->families & (1<<AF_INET)) {
|
|
if ((fp = net_tcp_open()) == NULL)
|
|
goto outerr;
|
|
|
|
setbuffer(fp, buf, bufsize);
|
|
if (generic_record_read(fp, tcp_show_line, f, AF_INET))
|
|
goto outerr;
|
|
fclose(fp);
|
|
}
|
|
|
|
if ((f->families & (1<<AF_INET6)) &&
|
|
(fp = net_tcp6_open()) != NULL) {
|
|
setbuffer(fp, buf, bufsize);
|
|
if (generic_record_read(fp, tcp_show_line, f, AF_INET6))
|
|
goto outerr;
|
|
fclose(fp);
|
|
}
|
|
|
|
free(buf);
|
|
return 0;
|
|
|
|
outerr:
|
|
do {
|
|
int saved_errno = errno;
|
|
|
|
free(buf);
|
|
if (fp)
|
|
fclose(fp);
|
|
errno = saved_errno;
|
|
return -1;
|
|
} while (0);
|
|
}
|
|
|
|
static int dccp_show(struct filter *f)
|
|
{
|
|
if (!filter_af_get(f, AF_INET) && !filter_af_get(f, AF_INET6))
|
|
return 0;
|
|
|
|
if (!getenv("PROC_NET_DCCP") && !getenv("PROC_ROOT")
|
|
&& inet_show_netlink(f, NULL, IPPROTO_DCCP) == 0)
|
|
return 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sctp_show(struct filter *f)
|
|
{
|
|
if (!filter_af_get(f, AF_INET) && !filter_af_get(f, AF_INET6))
|
|
return 0;
|
|
|
|
if (!getenv("PROC_NET_SCTP") && !getenv("PROC_ROOT")
|
|
&& inet_show_netlink(f, NULL, IPPROTO_SCTP) == 0)
|
|
return 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int dgram_show_line(char *line, const struct filter *f, int family)
|
|
{
|
|
struct sockstat s = {};
|
|
char *loc, *rem, *data;
|
|
char opt[256];
|
|
int n;
|
|
|
|
if (proc_inet_split_line(line, &loc, &rem, &data))
|
|
return -1;
|
|
|
|
int state = (data[1] >= 'A') ? (data[1] - 'A' + 10) : (data[1] - '0');
|
|
|
|
if (!(f->states & (1 << state)))
|
|
return 0;
|
|
|
|
proc_parse_inet_addr(loc, rem, family, &s);
|
|
|
|
if (f->f && run_ssfilter(f->f, &s) == 0)
|
|
return 0;
|
|
|
|
opt[0] = 0;
|
|
n = sscanf(data, "%x %x:%x %*x:%*x %*x %d %*d %u %d %llx %[^\n]\n",
|
|
&s.state, &s.wq, &s.rq,
|
|
&s.uid, &s.ino,
|
|
&s.refcnt, &s.sk, opt);
|
|
|
|
if (n < 9)
|
|
opt[0] = 0;
|
|
|
|
s.type = dg_proto == UDP_PROTO ? IPPROTO_UDP : 0;
|
|
inet_stats_print(&s, false);
|
|
|
|
if (show_details && opt[0])
|
|
printf(" opt:\"%s\"", opt);
|
|
|
|
printf("\n");
|
|
return 0;
|
|
}
|
|
|
|
static int udp_show(struct filter *f)
|
|
{
|
|
FILE *fp = NULL;
|
|
|
|
if (!filter_af_get(f, AF_INET) && !filter_af_get(f, AF_INET6))
|
|
return 0;
|
|
|
|
dg_proto = UDP_PROTO;
|
|
|
|
if (!getenv("PROC_NET_UDP") && !getenv("PROC_ROOT")
|
|
&& inet_show_netlink(f, NULL, IPPROTO_UDP) == 0)
|
|
return 0;
|
|
|
|
if (f->families&(1<<AF_INET)) {
|
|
if ((fp = net_udp_open()) == NULL)
|
|
goto outerr;
|
|
if (generic_record_read(fp, dgram_show_line, f, AF_INET))
|
|
goto outerr;
|
|
fclose(fp);
|
|
}
|
|
|
|
if ((f->families&(1<<AF_INET6)) &&
|
|
(fp = net_udp6_open()) != NULL) {
|
|
if (generic_record_read(fp, dgram_show_line, f, AF_INET6))
|
|
goto outerr;
|
|
fclose(fp);
|
|
}
|
|
return 0;
|
|
|
|
outerr:
|
|
do {
|
|
int saved_errno = errno;
|
|
|
|
if (fp)
|
|
fclose(fp);
|
|
errno = saved_errno;
|
|
return -1;
|
|
} while (0);
|
|
}
|
|
|
|
static int raw_show(struct filter *f)
|
|
{
|
|
FILE *fp = NULL;
|
|
|
|
if (!filter_af_get(f, AF_INET) && !filter_af_get(f, AF_INET6))
|
|
return 0;
|
|
|
|
dg_proto = RAW_PROTO;
|
|
|
|
if (!getenv("PROC_NET_RAW") && !getenv("PROC_ROOT") &&
|
|
inet_show_netlink(f, NULL, IPPROTO_RAW) == 0)
|
|
return 0;
|
|
|
|
if (f->families&(1<<AF_INET)) {
|
|
if ((fp = net_raw_open()) == NULL)
|
|
goto outerr;
|
|
if (generic_record_read(fp, dgram_show_line, f, AF_INET))
|
|
goto outerr;
|
|
fclose(fp);
|
|
}
|
|
|
|
if ((f->families&(1<<AF_INET6)) &&
|
|
(fp = net_raw6_open()) != NULL) {
|
|
if (generic_record_read(fp, dgram_show_line, f, AF_INET6))
|
|
goto outerr;
|
|
fclose(fp);
|
|
}
|
|
return 0;
|
|
|
|
outerr:
|
|
do {
|
|
int saved_errno = errno;
|
|
|
|
if (fp)
|
|
fclose(fp);
|
|
errno = saved_errno;
|
|
return -1;
|
|
} while (0);
|
|
}
|
|
|
|
#define MAX_UNIX_REMEMBER (1024*1024/sizeof(struct sockstat))
|
|
|
|
static void unix_list_drop_first(struct sockstat **list)
|
|
{
|
|
struct sockstat *s = *list;
|
|
|
|
(*list) = (*list)->next;
|
|
free(s->name);
|
|
free(s);
|
|
}
|
|
|
|
static bool unix_type_skip(struct sockstat *s, struct filter *f)
|
|
{
|
|
if (s->type == SOCK_STREAM && !(f->dbs&(1<<UNIX_ST_DB)))
|
|
return true;
|
|
if (s->type == SOCK_DGRAM && !(f->dbs&(1<<UNIX_DG_DB)))
|
|
return true;
|
|
if (s->type == SOCK_SEQPACKET && !(f->dbs&(1<<UNIX_SQ_DB)))
|
|
return true;
|
|
return false;
|
|
}
|
|
|
|
static void unix_stats_print(struct sockstat *s, struct filter *f)
|
|
{
|
|
char port_name[30] = {};
|
|
|
|
sock_state_print(s);
|
|
|
|
sock_addr_print(s->name ?: "*", " ",
|
|
int_to_str(s->lport, port_name), NULL);
|
|
sock_addr_print(s->peer_name ?: "*", " ",
|
|
int_to_str(s->rport, port_name), NULL);
|
|
|
|
proc_ctx_print(s);
|
|
}
|
|
|
|
static int unix_show_sock(const struct sockaddr_nl *addr, struct nlmsghdr *nlh,
|
|
void *arg)
|
|
{
|
|
struct filter *f = (struct filter *)arg;
|
|
struct unix_diag_msg *r = NLMSG_DATA(nlh);
|
|
struct rtattr *tb[UNIX_DIAG_MAX+1];
|
|
char name[128];
|
|
struct sockstat stat = { .name = "*", .peer_name = "*" };
|
|
|
|
parse_rtattr(tb, UNIX_DIAG_MAX, (struct rtattr *)(r+1),
|
|
nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
|
|
|
|
stat.type = r->udiag_type;
|
|
stat.state = r->udiag_state;
|
|
stat.ino = stat.lport = r->udiag_ino;
|
|
stat.local.family = stat.remote.family = AF_UNIX;
|
|
|
|
if (unix_type_skip(&stat, f))
|
|
return 0;
|
|
|
|
if (tb[UNIX_DIAG_RQLEN]) {
|
|
struct unix_diag_rqlen *rql = RTA_DATA(tb[UNIX_DIAG_RQLEN]);
|
|
|
|
stat.rq = rql->udiag_rqueue;
|
|
stat.wq = rql->udiag_wqueue;
|
|
}
|
|
if (tb[UNIX_DIAG_NAME]) {
|
|
int len = RTA_PAYLOAD(tb[UNIX_DIAG_NAME]);
|
|
|
|
memcpy(name, RTA_DATA(tb[UNIX_DIAG_NAME]), len);
|
|
name[len] = '\0';
|
|
if (name[0] == '\0') {
|
|
int i;
|
|
for (i = 0; i < len; i++)
|
|
if (name[i] == '\0')
|
|
name[i] = '@';
|
|
}
|
|
stat.name = &name[0];
|
|
memcpy(stat.local.data, &stat.name, sizeof(stat.name));
|
|
}
|
|
if (tb[UNIX_DIAG_PEER])
|
|
stat.rport = rta_getattr_u32(tb[UNIX_DIAG_PEER]);
|
|
|
|
if (f->f && run_ssfilter(f->f, &stat) == 0)
|
|
return 0;
|
|
|
|
unix_stats_print(&stat, f);
|
|
|
|
if (show_mem)
|
|
print_skmeminfo(tb, UNIX_DIAG_MEMINFO);
|
|
if (show_details) {
|
|
if (tb[UNIX_DIAG_SHUTDOWN]) {
|
|
unsigned char mask;
|
|
|
|
mask = rta_getattr_u8(tb[UNIX_DIAG_SHUTDOWN]);
|
|
printf(" %c-%c", mask & 1 ? '-' : '<', mask & 2 ? '-' : '>');
|
|
}
|
|
}
|
|
printf("\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int handle_netlink_request(struct filter *f, struct nlmsghdr *req,
|
|
size_t size, rtnl_filter_t show_one_sock)
|
|
{
|
|
int ret = -1;
|
|
struct rtnl_handle rth;
|
|
|
|
if (rtnl_open_byproto(&rth, 0, NETLINK_SOCK_DIAG))
|
|
return -1;
|
|
|
|
rth.dump = MAGIC_SEQ;
|
|
|
|
if (rtnl_send(&rth, req, size) < 0)
|
|
goto Exit;
|
|
|
|
if (rtnl_dump_filter(&rth, show_one_sock, f))
|
|
goto Exit;
|
|
|
|
ret = 0;
|
|
Exit:
|
|
rtnl_close(&rth);
|
|
return ret;
|
|
}
|
|
|
|
static int unix_show_netlink(struct filter *f)
|
|
{
|
|
DIAG_REQUEST(req, struct unix_diag_req r);
|
|
|
|
req.r.sdiag_family = AF_UNIX;
|
|
req.r.udiag_states = f->states;
|
|
req.r.udiag_show = UDIAG_SHOW_NAME | UDIAG_SHOW_PEER | UDIAG_SHOW_RQLEN;
|
|
if (show_mem)
|
|
req.r.udiag_show |= UDIAG_SHOW_MEMINFO;
|
|
|
|
return handle_netlink_request(f, &req.nlh, sizeof(req), unix_show_sock);
|
|
}
|
|
|
|
static int unix_show(struct filter *f)
|
|
{
|
|
FILE *fp;
|
|
char buf[256];
|
|
char name[128];
|
|
int newformat = 0;
|
|
int cnt;
|
|
struct sockstat *list = NULL;
|
|
const int unix_state_map[] = { SS_CLOSE, SS_SYN_SENT,
|
|
SS_ESTABLISHED, SS_CLOSING };
|
|
|
|
if (!filter_af_get(f, AF_UNIX))
|
|
return 0;
|
|
|
|
if (!getenv("PROC_NET_UNIX") && !getenv("PROC_ROOT")
|
|
&& unix_show_netlink(f) == 0)
|
|
return 0;
|
|
|
|
if ((fp = net_unix_open()) == NULL)
|
|
return -1;
|
|
if (!fgets(buf, sizeof(buf), fp)) {
|
|
fclose(fp);
|
|
return -1;
|
|
}
|
|
|
|
if (memcmp(buf, "Peer", 4) == 0)
|
|
newformat = 1;
|
|
cnt = 0;
|
|
|
|
while (fgets(buf, sizeof(buf), fp)) {
|
|
struct sockstat *u, **insp;
|
|
int flags;
|
|
|
|
if (!(u = calloc(1, sizeof(*u))))
|
|
break;
|
|
|
|
if (sscanf(buf, "%x: %x %x %x %x %x %d %s",
|
|
&u->rport, &u->rq, &u->wq, &flags, &u->type,
|
|
&u->state, &u->ino, name) < 8)
|
|
name[0] = 0;
|
|
|
|
u->lport = u->ino;
|
|
u->local.family = u->remote.family = AF_UNIX;
|
|
|
|
if (flags & (1 << 16)) {
|
|
u->state = SS_LISTEN;
|
|
} else if (u->state > 0 &&
|
|
u->state <= ARRAY_SIZE(unix_state_map)) {
|
|
u->state = unix_state_map[u->state-1];
|
|
if (u->type == SOCK_DGRAM && u->state == SS_CLOSE && u->rport)
|
|
u->state = SS_ESTABLISHED;
|
|
}
|
|
if (unix_type_skip(u, f) ||
|
|
!(f->states & (1 << u->state))) {
|
|
free(u);
|
|
continue;
|
|
}
|
|
|
|
if (!newformat) {
|
|
u->rport = 0;
|
|
u->rq = 0;
|
|
u->wq = 0;
|
|
}
|
|
|
|
if (name[0]) {
|
|
u->name = strdup(name);
|
|
if (!u->name) {
|
|
free(u);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (u->rport) {
|
|
struct sockstat *p;
|
|
|
|
for (p = list; p; p = p->next) {
|
|
if (u->rport == p->lport)
|
|
break;
|
|
}
|
|
if (!p)
|
|
u->peer_name = "?";
|
|
else
|
|
u->peer_name = p->name ? : "*";
|
|
}
|
|
|
|
if (f->f) {
|
|
struct sockstat st = {
|
|
.local.family = AF_UNIX,
|
|
.remote.family = AF_UNIX,
|
|
};
|
|
|
|
memcpy(st.local.data, &u->name, sizeof(u->name));
|
|
if (strcmp(u->peer_name, "*"))
|
|
memcpy(st.remote.data, &u->peer_name,
|
|
sizeof(u->peer_name));
|
|
if (run_ssfilter(f->f, &st) == 0) {
|
|
free(u->name);
|
|
free(u);
|
|
continue;
|
|
}
|
|
}
|
|
|
|
insp = &list;
|
|
while (*insp) {
|
|
if (u->type < (*insp)->type ||
|
|
(u->type == (*insp)->type &&
|
|
u->ino < (*insp)->ino))
|
|
break;
|
|
insp = &(*insp)->next;
|
|
}
|
|
u->next = *insp;
|
|
*insp = u;
|
|
|
|
if (++cnt > MAX_UNIX_REMEMBER) {
|
|
while (list) {
|
|
unix_stats_print(list, f);
|
|
printf("\n");
|
|
|
|
unix_list_drop_first(&list);
|
|
}
|
|
cnt = 0;
|
|
}
|
|
}
|
|
fclose(fp);
|
|
while (list) {
|
|
unix_stats_print(list, f);
|
|
printf("\n");
|
|
|
|
unix_list_drop_first(&list);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int packet_stats_print(struct sockstat *s, const struct filter *f)
|
|
{
|
|
const char *addr, *port;
|
|
char ll_name[16];
|
|
|
|
s->local.family = s->remote.family = AF_PACKET;
|
|
|
|
if (f->f) {
|
|
s->local.data[0] = s->prot;
|
|
if (run_ssfilter(f->f, s) == 0)
|
|
return 1;
|
|
}
|
|
|
|
sock_state_print(s);
|
|
|
|
if (s->prot == 3)
|
|
addr = "*";
|
|
else
|
|
addr = ll_proto_n2a(htons(s->prot), ll_name, sizeof(ll_name));
|
|
|
|
if (s->iface == 0)
|
|
port = "*";
|
|
else
|
|
port = xll_index_to_name(s->iface);
|
|
|
|
sock_addr_print(addr, ":", port, NULL);
|
|
sock_addr_print("", "*", "", NULL);
|
|
|
|
proc_ctx_print(s);
|
|
|
|
if (show_details)
|
|
sock_details_print(s);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void packet_show_ring(struct packet_diag_ring *ring)
|
|
{
|
|
printf("blk_size:%d", ring->pdr_block_size);
|
|
printf(",blk_nr:%d", ring->pdr_block_nr);
|
|
printf(",frm_size:%d", ring->pdr_frame_size);
|
|
printf(",frm_nr:%d", ring->pdr_frame_nr);
|
|
printf(",tmo:%d", ring->pdr_retire_tmo);
|
|
printf(",features:0x%x", ring->pdr_features);
|
|
}
|
|
|
|
static int packet_show_sock(const struct sockaddr_nl *addr,
|
|
struct nlmsghdr *nlh, void *arg)
|
|
{
|
|
const struct filter *f = arg;
|
|
struct packet_diag_msg *r = NLMSG_DATA(nlh);
|
|
struct packet_diag_info *pinfo = NULL;
|
|
struct packet_diag_ring *ring_rx = NULL, *ring_tx = NULL;
|
|
struct rtattr *tb[PACKET_DIAG_MAX+1];
|
|
struct sockstat stat = {};
|
|
uint32_t fanout = 0;
|
|
bool has_fanout = false;
|
|
|
|
parse_rtattr(tb, PACKET_DIAG_MAX, (struct rtattr *)(r+1),
|
|
nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
|
|
|
|
/* use /proc/net/packet if all info are not available */
|
|
if (!tb[PACKET_DIAG_MEMINFO])
|
|
return -1;
|
|
|
|
stat.type = r->pdiag_type;
|
|
stat.prot = r->pdiag_num;
|
|
stat.ino = r->pdiag_ino;
|
|
stat.state = SS_CLOSE;
|
|
stat.sk = cookie_sk_get(&r->pdiag_cookie[0]);
|
|
|
|
if (tb[PACKET_DIAG_MEMINFO]) {
|
|
__u32 *skmeminfo = RTA_DATA(tb[PACKET_DIAG_MEMINFO]);
|
|
|
|
stat.rq = skmeminfo[SK_MEMINFO_RMEM_ALLOC];
|
|
}
|
|
|
|
if (tb[PACKET_DIAG_INFO]) {
|
|
pinfo = RTA_DATA(tb[PACKET_DIAG_INFO]);
|
|
stat.lport = stat.iface = pinfo->pdi_index;
|
|
}
|
|
|
|
if (tb[PACKET_DIAG_UID])
|
|
stat.uid = rta_getattr_u32(tb[PACKET_DIAG_UID]);
|
|
|
|
if (tb[PACKET_DIAG_RX_RING])
|
|
ring_rx = RTA_DATA(tb[PACKET_DIAG_RX_RING]);
|
|
|
|
if (tb[PACKET_DIAG_TX_RING])
|
|
ring_tx = RTA_DATA(tb[PACKET_DIAG_TX_RING]);
|
|
|
|
if (tb[PACKET_DIAG_FANOUT]) {
|
|
has_fanout = true;
|
|
fanout = rta_getattr_u32(tb[PACKET_DIAG_FANOUT]);
|
|
}
|
|
|
|
if (packet_stats_print(&stat, f))
|
|
return 0;
|
|
|
|
if (show_details) {
|
|
if (pinfo) {
|
|
printf("\n\tver:%d", pinfo->pdi_version);
|
|
printf(" cpy_thresh:%d", pinfo->pdi_copy_thresh);
|
|
printf(" flags( ");
|
|
if (pinfo->pdi_flags & PDI_RUNNING)
|
|
printf("running");
|
|
if (pinfo->pdi_flags & PDI_AUXDATA)
|
|
printf(" auxdata");
|
|
if (pinfo->pdi_flags & PDI_ORIGDEV)
|
|
printf(" origdev");
|
|
if (pinfo->pdi_flags & PDI_VNETHDR)
|
|
printf(" vnethdr");
|
|
if (pinfo->pdi_flags & PDI_LOSS)
|
|
printf(" loss");
|
|
if (!pinfo->pdi_flags)
|
|
printf("0");
|
|
printf(" )");
|
|
}
|
|
if (ring_rx) {
|
|
printf("\n\tring_rx(");
|
|
packet_show_ring(ring_rx);
|
|
printf(")");
|
|
}
|
|
if (ring_tx) {
|
|
printf("\n\tring_tx(");
|
|
packet_show_ring(ring_tx);
|
|
printf(")");
|
|
}
|
|
if (has_fanout) {
|
|
uint16_t type = (fanout >> 16) & 0xffff;
|
|
|
|
printf("\n\tfanout(");
|
|
printf("id:%d,", fanout & 0xffff);
|
|
printf("type:");
|
|
|
|
if (type == 0)
|
|
printf("hash");
|
|
else if (type == 1)
|
|
printf("lb");
|
|
else if (type == 2)
|
|
printf("cpu");
|
|
else if (type == 3)
|
|
printf("roll");
|
|
else if (type == 4)
|
|
printf("random");
|
|
else if (type == 5)
|
|
printf("qm");
|
|
else
|
|
printf("0x%x", type);
|
|
|
|
printf(")");
|
|
}
|
|
}
|
|
|
|
if (show_bpf && tb[PACKET_DIAG_FILTER]) {
|
|
struct sock_filter *fil =
|
|
RTA_DATA(tb[PACKET_DIAG_FILTER]);
|
|
int num = RTA_PAYLOAD(tb[PACKET_DIAG_FILTER]) /
|
|
sizeof(struct sock_filter);
|
|
|
|
printf("\n\tbpf filter (%d): ", num);
|
|
while (num) {
|
|
printf(" 0x%02x %u %u %u,",
|
|
fil->code, fil->jt, fil->jf, fil->k);
|
|
num--;
|
|
fil++;
|
|
}
|
|
}
|
|
printf("\n");
|
|
return 0;
|
|
}
|
|
|
|
static int packet_show_netlink(struct filter *f)
|
|
{
|
|
DIAG_REQUEST(req, struct packet_diag_req r);
|
|
|
|
req.r.sdiag_family = AF_PACKET;
|
|
req.r.pdiag_show = PACKET_SHOW_INFO | PACKET_SHOW_MEMINFO |
|
|
PACKET_SHOW_FILTER | PACKET_SHOW_RING_CFG | PACKET_SHOW_FANOUT;
|
|
|
|
return handle_netlink_request(f, &req.nlh, sizeof(req), packet_show_sock);
|
|
}
|
|
|
|
static int packet_show_line(char *buf, const struct filter *f, int fam)
|
|
{
|
|
unsigned long long sk;
|
|
struct sockstat stat = {};
|
|
int type, prot, iface, state, rq, uid, ino;
|
|
|
|
sscanf(buf, "%llx %*d %d %x %d %d %u %u %u",
|
|
&sk,
|
|
&type, &prot, &iface, &state,
|
|
&rq, &uid, &ino);
|
|
|
|
if (stat.type == SOCK_RAW && !(f->dbs&(1<<PACKET_R_DB)))
|
|
return 0;
|
|
if (stat.type == SOCK_DGRAM && !(f->dbs&(1<<PACKET_DG_DB)))
|
|
return 0;
|
|
|
|
stat.type = type;
|
|
stat.prot = prot;
|
|
stat.lport = stat.iface = iface;
|
|
stat.state = state;
|
|
stat.rq = rq;
|
|
stat.uid = uid;
|
|
stat.ino = ino;
|
|
stat.state = SS_CLOSE;
|
|
|
|
if (packet_stats_print(&stat, f))
|
|
return 0;
|
|
|
|
printf("\n");
|
|
return 0;
|
|
}
|
|
|
|
static int packet_show(struct filter *f)
|
|
{
|
|
FILE *fp;
|
|
int rc = 0;
|
|
|
|
if (!filter_af_get(f, AF_PACKET) || !(f->states & (1 << SS_CLOSE)))
|
|
return 0;
|
|
|
|
if (!getenv("PROC_NET_PACKET") && !getenv("PROC_ROOT") &&
|
|
packet_show_netlink(f) == 0)
|
|
return 0;
|
|
|
|
if ((fp = net_packet_open()) == NULL)
|
|
return -1;
|
|
if (generic_record_read(fp, packet_show_line, f, AF_PACKET))
|
|
rc = -1;
|
|
|
|
fclose(fp);
|
|
return rc;
|
|
}
|
|
|
|
static int netlink_show_one(struct filter *f,
|
|
int prot, int pid, unsigned int groups,
|
|
int state, int dst_pid, unsigned int dst_group,
|
|
int rq, int wq,
|
|
unsigned long long sk, unsigned long long cb)
|
|
{
|
|
struct sockstat st = {
|
|
.state = SS_CLOSE,
|
|
.rq = rq,
|
|
.wq = wq,
|
|
.local.family = AF_NETLINK,
|
|
.remote.family = AF_NETLINK,
|
|
};
|
|
|
|
SPRINT_BUF(prot_buf) = {};
|
|
const char *prot_name;
|
|
char procname[64] = {};
|
|
|
|
if (f->f) {
|
|
st.rport = -1;
|
|
st.lport = pid;
|
|
st.local.data[0] = prot;
|
|
if (run_ssfilter(f->f, &st) == 0)
|
|
return 1;
|
|
}
|
|
|
|
sock_state_print(&st);
|
|
|
|
if (resolve_services)
|
|
prot_name = nl_proto_n2a(prot, prot_buf, sizeof(prot_buf));
|
|
else
|
|
prot_name = int_to_str(prot, prot_buf);
|
|
|
|
if (pid == -1) {
|
|
procname[0] = '*';
|
|
} else if (resolve_services) {
|
|
int done = 0;
|
|
|
|
if (!pid) {
|
|
done = 1;
|
|
strncpy(procname, "kernel", 6);
|
|
} else if (pid > 0) {
|
|
FILE *fp;
|
|
|
|
snprintf(procname, sizeof(procname), "%s/%d/stat",
|
|
getenv("PROC_ROOT") ? : "/proc", pid);
|
|
if ((fp = fopen(procname, "r")) != NULL) {
|
|
if (fscanf(fp, "%*d (%[^)])", procname) == 1) {
|
|
snprintf(procname+strlen(procname),
|
|
sizeof(procname)-strlen(procname),
|
|
"/%d", pid);
|
|
done = 1;
|
|
}
|
|
fclose(fp);
|
|
}
|
|
}
|
|
if (!done)
|
|
int_to_str(pid, procname);
|
|
} else {
|
|
int_to_str(pid, procname);
|
|
}
|
|
|
|
sock_addr_print(prot_name, ":", procname, NULL);
|
|
|
|
if (state == NETLINK_CONNECTED) {
|
|
char dst_group_buf[30];
|
|
char dst_pid_buf[30];
|
|
|
|
sock_addr_print(int_to_str(dst_group, dst_group_buf), ":",
|
|
int_to_str(dst_pid, dst_pid_buf), NULL);
|
|
} else {
|
|
sock_addr_print("", "*", "", NULL);
|
|
}
|
|
|
|
char *pid_context = NULL;
|
|
|
|
if (show_proc_ctx) {
|
|
/* The pid value will either be:
|
|
* 0 if destination kernel - show kernel initial context.
|
|
* A valid process pid - use getpidcon.
|
|
* A unique value allocated by the kernel or netlink user
|
|
* to the process - show context as "not available".
|
|
*/
|
|
if (!pid)
|
|
security_get_initial_context("kernel", &pid_context);
|
|
else if (pid > 0)
|
|
getpidcon(pid, &pid_context);
|
|
|
|
printf(" proc_ctx=%s", pid_context ? : "unavailable");
|
|
free(pid_context);
|
|
}
|
|
|
|
if (show_details) {
|
|
printf(" sk=%llx cb=%llx groups=0x%08x", sk, cb, groups);
|
|
}
|
|
printf("\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int netlink_show_sock(const struct sockaddr_nl *addr,
|
|
struct nlmsghdr *nlh, void *arg)
|
|
{
|
|
struct filter *f = (struct filter *)arg;
|
|
struct netlink_diag_msg *r = NLMSG_DATA(nlh);
|
|
struct rtattr *tb[NETLINK_DIAG_MAX+1];
|
|
int rq = 0, wq = 0;
|
|
unsigned long groups = 0;
|
|
|
|
parse_rtattr(tb, NETLINK_DIAG_MAX, (struct rtattr *)(r+1),
|
|
nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
|
|
|
|
if (tb[NETLINK_DIAG_GROUPS] && RTA_PAYLOAD(tb[NETLINK_DIAG_GROUPS]))
|
|
groups = *(unsigned long *) RTA_DATA(tb[NETLINK_DIAG_GROUPS]);
|
|
|
|
if (tb[NETLINK_DIAG_MEMINFO]) {
|
|
const __u32 *skmeminfo;
|
|
|
|
skmeminfo = RTA_DATA(tb[NETLINK_DIAG_MEMINFO]);
|
|
|
|
rq = skmeminfo[SK_MEMINFO_RMEM_ALLOC];
|
|
wq = skmeminfo[SK_MEMINFO_WMEM_ALLOC];
|
|
}
|
|
|
|
if (netlink_show_one(f, r->ndiag_protocol, r->ndiag_portid, groups,
|
|
r->ndiag_state, r->ndiag_dst_portid, r->ndiag_dst_group,
|
|
rq, wq, 0, 0)) {
|
|
return 0;
|
|
}
|
|
|
|
if (show_mem) {
|
|
printf("\t");
|
|
print_skmeminfo(tb, NETLINK_DIAG_MEMINFO);
|
|
printf("\n");
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int netlink_show_netlink(struct filter *f)
|
|
{
|
|
DIAG_REQUEST(req, struct netlink_diag_req r);
|
|
|
|
req.r.sdiag_family = AF_NETLINK;
|
|
req.r.sdiag_protocol = NDIAG_PROTO_ALL;
|
|
req.r.ndiag_show = NDIAG_SHOW_GROUPS | NDIAG_SHOW_MEMINFO;
|
|
|
|
return handle_netlink_request(f, &req.nlh, sizeof(req), netlink_show_sock);
|
|
}
|
|
|
|
static int netlink_show(struct filter *f)
|
|
{
|
|
FILE *fp;
|
|
char buf[256];
|
|
int prot, pid;
|
|
unsigned int groups;
|
|
int rq, wq, rc;
|
|
unsigned long long sk, cb;
|
|
|
|
if (!filter_af_get(f, AF_NETLINK) || !(f->states & (1 << SS_CLOSE)))
|
|
return 0;
|
|
|
|
if (!getenv("PROC_NET_NETLINK") && !getenv("PROC_ROOT") &&
|
|
netlink_show_netlink(f) == 0)
|
|
return 0;
|
|
|
|
if ((fp = net_netlink_open()) == NULL)
|
|
return -1;
|
|
if (!fgets(buf, sizeof(buf), fp)) {
|
|
fclose(fp);
|
|
return -1;
|
|
}
|
|
|
|
while (fgets(buf, sizeof(buf), fp)) {
|
|
sscanf(buf, "%llx %d %d %x %d %d %llx %d",
|
|
&sk,
|
|
&prot, &pid, &groups, &rq, &wq, &cb, &rc);
|
|
|
|
netlink_show_one(f, prot, pid, groups, 0, 0, 0, rq, wq, sk, cb);
|
|
}
|
|
|
|
fclose(fp);
|
|
return 0;
|
|
}
|
|
|
|
struct sock_diag_msg {
|
|
__u8 sdiag_family;
|
|
};
|
|
|
|
static int generic_show_sock(const struct sockaddr_nl *addr,
|
|
struct nlmsghdr *nlh, void *arg)
|
|
{
|
|
struct sock_diag_msg *r = NLMSG_DATA(nlh);
|
|
struct inet_diag_arg inet_arg = { .f = arg, .protocol = IPPROTO_MAX };
|
|
|
|
switch (r->sdiag_family) {
|
|
case AF_INET:
|
|
case AF_INET6:
|
|
return show_one_inet_sock(addr, nlh, &inet_arg);
|
|
case AF_UNIX:
|
|
return unix_show_sock(addr, nlh, arg);
|
|
case AF_PACKET:
|
|
return packet_show_sock(addr, nlh, arg);
|
|
case AF_NETLINK:
|
|
return netlink_show_sock(addr, nlh, arg);
|
|
default:
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
static int handle_follow_request(struct filter *f)
|
|
{
|
|
int ret = 0;
|
|
int groups = 0;
|
|
struct rtnl_handle rth;
|
|
|
|
if (f->families & (1 << AF_INET) && f->dbs & (1 << TCP_DB))
|
|
groups |= 1 << (SKNLGRP_INET_TCP_DESTROY - 1);
|
|
if (f->families & (1 << AF_INET) && f->dbs & (1 << UDP_DB))
|
|
groups |= 1 << (SKNLGRP_INET_UDP_DESTROY - 1);
|
|
if (f->families & (1 << AF_INET6) && f->dbs & (1 << TCP_DB))
|
|
groups |= 1 << (SKNLGRP_INET6_TCP_DESTROY - 1);
|
|
if (f->families & (1 << AF_INET6) && f->dbs & (1 << UDP_DB))
|
|
groups |= 1 << (SKNLGRP_INET6_UDP_DESTROY - 1);
|
|
|
|
if (groups == 0)
|
|
return -1;
|
|
|
|
if (rtnl_open_byproto(&rth, groups, NETLINK_SOCK_DIAG))
|
|
return -1;
|
|
|
|
rth.dump = 0;
|
|
rth.local.nl_pid = 0;
|
|
|
|
if (rtnl_dump_filter(&rth, generic_show_sock, f))
|
|
ret = -1;
|
|
|
|
rtnl_close(&rth);
|
|
return ret;
|
|
}
|
|
|
|
static int get_snmp_int(char *proto, char *key, int *result)
|
|
{
|
|
char buf[1024];
|
|
FILE *fp;
|
|
int protolen = strlen(proto);
|
|
int keylen = strlen(key);
|
|
|
|
*result = 0;
|
|
|
|
if ((fp = net_snmp_open()) == NULL)
|
|
return -1;
|
|
|
|
while (fgets(buf, sizeof(buf), fp) != NULL) {
|
|
char *p = buf;
|
|
int pos = 0;
|
|
|
|
if (memcmp(buf, proto, protolen))
|
|
continue;
|
|
while ((p = strchr(p, ' ')) != NULL) {
|
|
pos++;
|
|
p++;
|
|
if (memcmp(p, key, keylen) == 0 &&
|
|
(p[keylen] == ' ' || p[keylen] == '\n'))
|
|
break;
|
|
}
|
|
if (fgets(buf, sizeof(buf), fp) == NULL)
|
|
break;
|
|
if (memcmp(buf, proto, protolen))
|
|
break;
|
|
p = buf;
|
|
while ((p = strchr(p, ' ')) != NULL) {
|
|
p++;
|
|
if (--pos == 0) {
|
|
sscanf(p, "%d", result);
|
|
fclose(fp);
|
|
return 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
fclose(fp);
|
|
errno = ESRCH;
|
|
return -1;
|
|
}
|
|
|
|
|
|
/* Get stats from sockstat */
|
|
|
|
struct ssummary {
|
|
int socks;
|
|
int tcp_mem;
|
|
int tcp_total;
|
|
int tcp_orphans;
|
|
int tcp_tws;
|
|
int tcp4_hashed;
|
|
int udp4;
|
|
int raw4;
|
|
int frag4;
|
|
int frag4_mem;
|
|
int tcp6_hashed;
|
|
int udp6;
|
|
int raw6;
|
|
int frag6;
|
|
int frag6_mem;
|
|
};
|
|
|
|
static void get_sockstat_line(char *line, struct ssummary *s)
|
|
{
|
|
char id[256], rem[256];
|
|
|
|
if (sscanf(line, "%[^ ] %[^\n]\n", id, rem) != 2)
|
|
return;
|
|
|
|
if (strcmp(id, "sockets:") == 0)
|
|
sscanf(rem, "%*s%d", &s->socks);
|
|
else if (strcmp(id, "UDP:") == 0)
|
|
sscanf(rem, "%*s%d", &s->udp4);
|
|
else if (strcmp(id, "UDP6:") == 0)
|
|
sscanf(rem, "%*s%d", &s->udp6);
|
|
else if (strcmp(id, "RAW:") == 0)
|
|
sscanf(rem, "%*s%d", &s->raw4);
|
|
else if (strcmp(id, "RAW6:") == 0)
|
|
sscanf(rem, "%*s%d", &s->raw6);
|
|
else if (strcmp(id, "TCP6:") == 0)
|
|
sscanf(rem, "%*s%d", &s->tcp6_hashed);
|
|
else if (strcmp(id, "FRAG:") == 0)
|
|
sscanf(rem, "%*s%d%*s%d", &s->frag4, &s->frag4_mem);
|
|
else if (strcmp(id, "FRAG6:") == 0)
|
|
sscanf(rem, "%*s%d%*s%d", &s->frag6, &s->frag6_mem);
|
|
else if (strcmp(id, "TCP:") == 0)
|
|
sscanf(rem, "%*s%d%*s%d%*s%d%*s%d%*s%d",
|
|
&s->tcp4_hashed,
|
|
&s->tcp_orphans, &s->tcp_tws, &s->tcp_total, &s->tcp_mem);
|
|
}
|
|
|
|
static int get_sockstat(struct ssummary *s)
|
|
{
|
|
char buf[256];
|
|
FILE *fp;
|
|
|
|
memset(s, 0, sizeof(*s));
|
|
|
|
if ((fp = net_sockstat_open()) == NULL)
|
|
return -1;
|
|
while (fgets(buf, sizeof(buf), fp) != NULL)
|
|
get_sockstat_line(buf, s);
|
|
fclose(fp);
|
|
|
|
if ((fp = net_sockstat6_open()) == NULL)
|
|
return 0;
|
|
while (fgets(buf, sizeof(buf), fp) != NULL)
|
|
get_sockstat_line(buf, s);
|
|
fclose(fp);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int print_summary(void)
|
|
{
|
|
struct ssummary s;
|
|
int tcp_estab;
|
|
|
|
if (get_sockstat(&s) < 0)
|
|
perror("ss: get_sockstat");
|
|
if (get_snmp_int("Tcp:", "CurrEstab", &tcp_estab) < 0)
|
|
perror("ss: get_snmpstat");
|
|
|
|
get_slabstat(&slabstat);
|
|
|
|
printf("Total: %d (kernel %d)\n", s.socks, slabstat.socks);
|
|
|
|
printf("TCP: %d (estab %d, closed %d, orphaned %d, synrecv %d, timewait %d/%d), ports %d\n",
|
|
s.tcp_total + slabstat.tcp_syns + s.tcp_tws,
|
|
tcp_estab,
|
|
s.tcp_total - (s.tcp4_hashed+s.tcp6_hashed-s.tcp_tws),
|
|
s.tcp_orphans,
|
|
slabstat.tcp_syns,
|
|
s.tcp_tws, slabstat.tcp_tws,
|
|
slabstat.tcp_ports
|
|
);
|
|
|
|
printf("\n");
|
|
printf("Transport Total IP IPv6\n");
|
|
printf("* %-9d %-9s %-9s\n", slabstat.socks, "-", "-");
|
|
printf("RAW %-9d %-9d %-9d\n", s.raw4+s.raw6, s.raw4, s.raw6);
|
|
printf("UDP %-9d %-9d %-9d\n", s.udp4+s.udp6, s.udp4, s.udp6);
|
|
printf("TCP %-9d %-9d %-9d\n", s.tcp4_hashed+s.tcp6_hashed, s.tcp4_hashed, s.tcp6_hashed);
|
|
printf("INET %-9d %-9d %-9d\n",
|
|
s.raw4+s.udp4+s.tcp4_hashed+
|
|
s.raw6+s.udp6+s.tcp6_hashed,
|
|
s.raw4+s.udp4+s.tcp4_hashed,
|
|
s.raw6+s.udp6+s.tcp6_hashed);
|
|
printf("FRAG %-9d %-9d %-9d\n", s.frag4+s.frag6, s.frag4, s.frag6);
|
|
|
|
printf("\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void _usage(FILE *dest)
|
|
{
|
|
fprintf(dest,
|
|
"Usage: ss [ OPTIONS ]\n"
|
|
" ss [ OPTIONS ] [ FILTER ]\n"
|
|
" -h, --help this message\n"
|
|
" -V, --version output version information\n"
|
|
" -n, --numeric don't resolve service names\n"
|
|
" -r, --resolve resolve host names\n"
|
|
" -a, --all display all sockets\n"
|
|
" -l, --listening display listening sockets\n"
|
|
" -o, --options show timer information\n"
|
|
" -e, --extended show detailed socket information\n"
|
|
" -m, --memory show socket memory usage\n"
|
|
" -p, --processes show process using socket\n"
|
|
" -i, --info show internal TCP information\n"
|
|
" -s, --summary show socket usage summary\n"
|
|
" -b, --bpf show bpf filter socket information\n"
|
|
" -E, --events continually display sockets as they are destroyed\n"
|
|
" -Z, --context display process SELinux security contexts\n"
|
|
" -z, --contexts display process and socket SELinux security contexts\n"
|
|
" -N, --net switch to the specified network namespace name\n"
|
|
"\n"
|
|
" -4, --ipv4 display only IP version 4 sockets\n"
|
|
" -6, --ipv6 display only IP version 6 sockets\n"
|
|
" -0, --packet display PACKET sockets\n"
|
|
" -t, --tcp display only TCP sockets\n"
|
|
" -S, --sctp display only SCTP sockets\n"
|
|
" -u, --udp display only UDP sockets\n"
|
|
" -d, --dccp display only DCCP sockets\n"
|
|
" -w, --raw display only RAW sockets\n"
|
|
" -x, --unix display only Unix domain sockets\n"
|
|
" -f, --family=FAMILY display sockets of type FAMILY\n"
|
|
" FAMILY := {inet|inet6|link|unix|netlink|help}\n"
|
|
"\n"
|
|
" -K, --kill forcibly close sockets, display what was closed\n"
|
|
" -H, --no-header Suppress header line\n"
|
|
"\n"
|
|
" -A, --query=QUERY, --socket=QUERY\n"
|
|
" QUERY := {all|inet|tcp|udp|raw|unix|unix_dgram|unix_stream|unix_seqpacket|packet|netlink}[,QUERY]\n"
|
|
"\n"
|
|
" -D, --diag=FILE Dump raw information about TCP sockets to FILE\n"
|
|
" -F, --filter=FILE read filter information from FILE\n"
|
|
" FILTER := [ state STATE-FILTER ] [ EXPRESSION ]\n"
|
|
" STATE-FILTER := {all|connected|synchronized|bucket|big|TCP-STATES}\n"
|
|
" TCP-STATES := {established|syn-sent|syn-recv|fin-wait-{1,2}|time-wait|closed|close-wait|last-ack|listening|closing}\n"
|
|
" connected := {established|syn-sent|syn-recv|fin-wait-{1,2}|time-wait|close-wait|last-ack|closing}\n"
|
|
" synchronized := {established|syn-recv|fin-wait-{1,2}|time-wait|close-wait|last-ack|closing}\n"
|
|
" bucket := {syn-recv|time-wait}\n"
|
|
" big := {established|syn-sent|fin-wait-{1,2}|closed|close-wait|last-ack|listening|closing}\n"
|
|
);
|
|
}
|
|
|
|
static void help(void) __attribute__((noreturn));
|
|
static void help(void)
|
|
{
|
|
_usage(stdout);
|
|
exit(0);
|
|
}
|
|
|
|
static void usage(void) __attribute__((noreturn));
|
|
static void usage(void)
|
|
{
|
|
_usage(stderr);
|
|
exit(-1);
|
|
}
|
|
|
|
|
|
static int scan_state(const char *state)
|
|
{
|
|
static const char * const sstate_namel[] = {
|
|
"UNKNOWN",
|
|
[SS_ESTABLISHED] = "established",
|
|
[SS_SYN_SENT] = "syn-sent",
|
|
[SS_SYN_RECV] = "syn-recv",
|
|
[SS_FIN_WAIT1] = "fin-wait-1",
|
|
[SS_FIN_WAIT2] = "fin-wait-2",
|
|
[SS_TIME_WAIT] = "time-wait",
|
|
[SS_CLOSE] = "unconnected",
|
|
[SS_CLOSE_WAIT] = "close-wait",
|
|
[SS_LAST_ACK] = "last-ack",
|
|
[SS_LISTEN] = "listening",
|
|
[SS_CLOSING] = "closing",
|
|
};
|
|
int i;
|
|
|
|
if (strcasecmp(state, "close") == 0 ||
|
|
strcasecmp(state, "closed") == 0)
|
|
return (1<<SS_CLOSE);
|
|
if (strcasecmp(state, "syn-rcv") == 0)
|
|
return (1<<SS_SYN_RECV);
|
|
if (strcasecmp(state, "established") == 0)
|
|
return (1<<SS_ESTABLISHED);
|
|
if (strcasecmp(state, "all") == 0)
|
|
return SS_ALL;
|
|
if (strcasecmp(state, "connected") == 0)
|
|
return SS_ALL & ~((1<<SS_CLOSE)|(1<<SS_LISTEN));
|
|
if (strcasecmp(state, "synchronized") == 0)
|
|
return SS_ALL & ~((1<<SS_CLOSE)|(1<<SS_LISTEN)|(1<<SS_SYN_SENT));
|
|
if (strcasecmp(state, "bucket") == 0)
|
|
return (1<<SS_SYN_RECV)|(1<<SS_TIME_WAIT);
|
|
if (strcasecmp(state, "big") == 0)
|
|
return SS_ALL & ~((1<<SS_SYN_RECV)|(1<<SS_TIME_WAIT));
|
|
for (i = 0; i < SS_MAX; i++) {
|
|
if (strcasecmp(state, sstate_namel[i]) == 0)
|
|
return (1<<i);
|
|
}
|
|
|
|
fprintf(stderr, "ss: wrong state name: %s\n", state);
|
|
exit(-1);
|
|
}
|
|
|
|
static const struct option long_opts[] = {
|
|
{ "numeric", 0, 0, 'n' },
|
|
{ "resolve", 0, 0, 'r' },
|
|
{ "options", 0, 0, 'o' },
|
|
{ "extended", 0, 0, 'e' },
|
|
{ "memory", 0, 0, 'm' },
|
|
{ "info", 0, 0, 'i' },
|
|
{ "processes", 0, 0, 'p' },
|
|
{ "bpf", 0, 0, 'b' },
|
|
{ "events", 0, 0, 'E' },
|
|
{ "dccp", 0, 0, 'd' },
|
|
{ "tcp", 0, 0, 't' },
|
|
{ "sctp", 0, 0, 'S' },
|
|
{ "udp", 0, 0, 'u' },
|
|
{ "raw", 0, 0, 'w' },
|
|
{ "unix", 0, 0, 'x' },
|
|
{ "all", 0, 0, 'a' },
|
|
{ "listening", 0, 0, 'l' },
|
|
{ "ipv4", 0, 0, '4' },
|
|
{ "ipv6", 0, 0, '6' },
|
|
{ "packet", 0, 0, '0' },
|
|
{ "family", 1, 0, 'f' },
|
|
{ "socket", 1, 0, 'A' },
|
|
{ "query", 1, 0, 'A' },
|
|
{ "summary", 0, 0, 's' },
|
|
{ "diag", 1, 0, 'D' },
|
|
{ "filter", 1, 0, 'F' },
|
|
{ "version", 0, 0, 'V' },
|
|
{ "help", 0, 0, 'h' },
|
|
{ "context", 0, 0, 'Z' },
|
|
{ "contexts", 0, 0, 'z' },
|
|
{ "net", 1, 0, 'N' },
|
|
{ "kill", 0, 0, 'K' },
|
|
{ "no-header", 0, 0, 'H' },
|
|
{ 0 }
|
|
|
|
};
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
int saw_states = 0;
|
|
int saw_query = 0;
|
|
int do_summary = 0;
|
|
const char *dump_tcpdiag = NULL;
|
|
FILE *filter_fp = NULL;
|
|
int ch;
|
|
int state_filter = 0;
|
|
int addrp_width, screen_width = 80;
|
|
|
|
while ((ch = getopt_long(argc, argv,
|
|
"dhaletuwxnro460spbEf:miA:D:F:vVzZN:KHS",
|
|
long_opts, NULL)) != EOF) {
|
|
switch (ch) {
|
|
case 'n':
|
|
resolve_services = 0;
|
|
break;
|
|
case 'r':
|
|
resolve_hosts = 1;
|
|
break;
|
|
case 'o':
|
|
show_options = 1;
|
|
break;
|
|
case 'e':
|
|
show_options = 1;
|
|
show_details++;
|
|
break;
|
|
case 'm':
|
|
show_mem = 1;
|
|
break;
|
|
case 'i':
|
|
show_tcpinfo = 1;
|
|
break;
|
|
case 'p':
|
|
show_users++;
|
|
user_ent_hash_build();
|
|
break;
|
|
case 'b':
|
|
show_options = 1;
|
|
show_bpf++;
|
|
break;
|
|
case 'E':
|
|
follow_events = 1;
|
|
break;
|
|
case 'd':
|
|
filter_db_set(¤t_filter, DCCP_DB);
|
|
break;
|
|
case 't':
|
|
filter_db_set(¤t_filter, TCP_DB);
|
|
break;
|
|
case 'S':
|
|
filter_db_set(¤t_filter, SCTP_DB);
|
|
break;
|
|
case 'u':
|
|
filter_db_set(¤t_filter, UDP_DB);
|
|
break;
|
|
case 'w':
|
|
filter_db_set(¤t_filter, RAW_DB);
|
|
break;
|
|
case 'x':
|
|
filter_af_set(¤t_filter, AF_UNIX);
|
|
break;
|
|
case 'a':
|
|
state_filter = SS_ALL;
|
|
break;
|
|
case 'l':
|
|
state_filter = (1 << SS_LISTEN) | (1 << SS_CLOSE);
|
|
break;
|
|
case '4':
|
|
filter_af_set(¤t_filter, AF_INET);
|
|
break;
|
|
case '6':
|
|
filter_af_set(¤t_filter, AF_INET6);
|
|
break;
|
|
case '0':
|
|
filter_af_set(¤t_filter, AF_PACKET);
|
|
break;
|
|
case 'f':
|
|
if (strcmp(optarg, "inet") == 0)
|
|
filter_af_set(¤t_filter, AF_INET);
|
|
else if (strcmp(optarg, "inet6") == 0)
|
|
filter_af_set(¤t_filter, AF_INET6);
|
|
else if (strcmp(optarg, "link") == 0)
|
|
filter_af_set(¤t_filter, AF_PACKET);
|
|
else if (strcmp(optarg, "unix") == 0)
|
|
filter_af_set(¤t_filter, AF_UNIX);
|
|
else if (strcmp(optarg, "netlink") == 0)
|
|
filter_af_set(¤t_filter, AF_NETLINK);
|
|
else if (strcmp(optarg, "help") == 0)
|
|
help();
|
|
else {
|
|
fprintf(stderr, "ss: \"%s\" is invalid family\n",
|
|
optarg);
|
|
usage();
|
|
}
|
|
break;
|
|
case 'A':
|
|
{
|
|
char *p, *p1;
|
|
|
|
if (!saw_query) {
|
|
current_filter.dbs = 0;
|
|
state_filter = state_filter ?
|
|
state_filter : SS_CONN;
|
|
saw_query = 1;
|
|
do_default = 0;
|
|
}
|
|
p = p1 = optarg;
|
|
do {
|
|
if ((p1 = strchr(p, ',')) != NULL)
|
|
*p1 = 0;
|
|
if (strcmp(p, "all") == 0) {
|
|
filter_default_dbs(¤t_filter);
|
|
} else if (strcmp(p, "inet") == 0) {
|
|
filter_db_set(¤t_filter, UDP_DB);
|
|
filter_db_set(¤t_filter, DCCP_DB);
|
|
filter_db_set(¤t_filter, TCP_DB);
|
|
filter_db_set(¤t_filter, SCTP_DB);
|
|
filter_db_set(¤t_filter, RAW_DB);
|
|
} else if (strcmp(p, "udp") == 0) {
|
|
filter_db_set(¤t_filter, UDP_DB);
|
|
} else if (strcmp(p, "dccp") == 0) {
|
|
filter_db_set(¤t_filter, DCCP_DB);
|
|
} else if (strcmp(p, "tcp") == 0) {
|
|
filter_db_set(¤t_filter, TCP_DB);
|
|
} else if (strcmp(p, "sctp") == 0) {
|
|
filter_db_set(¤t_filter, SCTP_DB);
|
|
} else if (strcmp(p, "raw") == 0) {
|
|
filter_db_set(¤t_filter, RAW_DB);
|
|
} else if (strcmp(p, "unix") == 0) {
|
|
filter_db_set(¤t_filter, UNIX_ST_DB);
|
|
filter_db_set(¤t_filter, UNIX_DG_DB);
|
|
filter_db_set(¤t_filter, UNIX_SQ_DB);
|
|
} else if (strcasecmp(p, "unix_stream") == 0 ||
|
|
strcmp(p, "u_str") == 0) {
|
|
filter_db_set(¤t_filter, UNIX_ST_DB);
|
|
} else if (strcasecmp(p, "unix_dgram") == 0 ||
|
|
strcmp(p, "u_dgr") == 0) {
|
|
filter_db_set(¤t_filter, UNIX_DG_DB);
|
|
} else if (strcasecmp(p, "unix_seqpacket") == 0 ||
|
|
strcmp(p, "u_seq") == 0) {
|
|
filter_db_set(¤t_filter, UNIX_SQ_DB);
|
|
} else if (strcmp(p, "packet") == 0) {
|
|
filter_db_set(¤t_filter, PACKET_R_DB);
|
|
filter_db_set(¤t_filter, PACKET_DG_DB);
|
|
} else if (strcmp(p, "packet_raw") == 0 ||
|
|
strcmp(p, "p_raw") == 0) {
|
|
filter_db_set(¤t_filter, PACKET_R_DB);
|
|
} else if (strcmp(p, "packet_dgram") == 0 ||
|
|
strcmp(p, "p_dgr") == 0) {
|
|
filter_db_set(¤t_filter, PACKET_DG_DB);
|
|
} else if (strcmp(p, "netlink") == 0) {
|
|
filter_db_set(¤t_filter, NETLINK_DB);
|
|
} else {
|
|
fprintf(stderr, "ss: \"%s\" is illegal socket table id\n", p);
|
|
usage();
|
|
}
|
|
p = p1 + 1;
|
|
} while (p1);
|
|
break;
|
|
}
|
|
case 's':
|
|
do_summary = 1;
|
|
break;
|
|
case 'D':
|
|
dump_tcpdiag = optarg;
|
|
break;
|
|
case 'F':
|
|
if (filter_fp) {
|
|
fprintf(stderr, "More than one filter file\n");
|
|
exit(-1);
|
|
}
|
|
if (optarg[0] == '-')
|
|
filter_fp = stdin;
|
|
else
|
|
filter_fp = fopen(optarg, "r");
|
|
if (!filter_fp) {
|
|
perror("fopen filter file");
|
|
exit(-1);
|
|
}
|
|
break;
|
|
case 'v':
|
|
case 'V':
|
|
printf("ss utility, iproute2-ss%s\n", SNAPSHOT);
|
|
exit(0);
|
|
case 'z':
|
|
show_sock_ctx++;
|
|
/* fall through */
|
|
case 'Z':
|
|
if (is_selinux_enabled() <= 0) {
|
|
fprintf(stderr, "ss: SELinux is not enabled.\n");
|
|
exit(1);
|
|
}
|
|
show_proc_ctx++;
|
|
user_ent_hash_build();
|
|
break;
|
|
case 'N':
|
|
if (netns_switch(optarg))
|
|
exit(1);
|
|
break;
|
|
case 'K':
|
|
current_filter.kill = 1;
|
|
break;
|
|
case 'H':
|
|
show_header = 0;
|
|
break;
|
|
case 'h':
|
|
help();
|
|
case '?':
|
|
default:
|
|
usage();
|
|
}
|
|
}
|
|
|
|
argc -= optind;
|
|
argv += optind;
|
|
|
|
if (do_summary) {
|
|
print_summary();
|
|
if (do_default && argc == 0)
|
|
exit(0);
|
|
}
|
|
|
|
while (argc > 0) {
|
|
if (strcmp(*argv, "state") == 0) {
|
|
NEXT_ARG();
|
|
if (!saw_states)
|
|
state_filter = 0;
|
|
state_filter |= scan_state(*argv);
|
|
saw_states = 1;
|
|
} else if (strcmp(*argv, "exclude") == 0 ||
|
|
strcmp(*argv, "excl") == 0) {
|
|
NEXT_ARG();
|
|
if (!saw_states)
|
|
state_filter = SS_ALL;
|
|
state_filter &= ~scan_state(*argv);
|
|
saw_states = 1;
|
|
} else {
|
|
break;
|
|
}
|
|
argc--; argv++;
|
|
}
|
|
|
|
if (do_default) {
|
|
state_filter = state_filter ? state_filter : SS_CONN;
|
|
filter_default_dbs(¤t_filter);
|
|
}
|
|
|
|
filter_states_set(¤t_filter, state_filter);
|
|
filter_merge_defaults(¤t_filter);
|
|
|
|
if (resolve_services && resolve_hosts &&
|
|
(current_filter.dbs & (UNIX_DBM|INET_L4_DBM)))
|
|
init_service_resolver();
|
|
|
|
if (current_filter.dbs == 0) {
|
|
fprintf(stderr, "ss: no socket tables to show with such filter.\n");
|
|
exit(0);
|
|
}
|
|
if (current_filter.families == 0) {
|
|
fprintf(stderr, "ss: no families to show with such filter.\n");
|
|
exit(0);
|
|
}
|
|
if (current_filter.states == 0) {
|
|
fprintf(stderr, "ss: no socket states to show with such filter.\n");
|
|
exit(0);
|
|
}
|
|
|
|
if (dump_tcpdiag) {
|
|
FILE *dump_fp = stdout;
|
|
|
|
if (!(current_filter.dbs & (1<<TCP_DB))) {
|
|
fprintf(stderr, "ss: tcpdiag dump requested and no tcp in filter.\n");
|
|
exit(0);
|
|
}
|
|
if (dump_tcpdiag[0] != '-') {
|
|
dump_fp = fopen(dump_tcpdiag, "w");
|
|
if (!dump_tcpdiag) {
|
|
perror("fopen dump file");
|
|
exit(-1);
|
|
}
|
|
}
|
|
inet_show_netlink(¤t_filter, dump_fp, IPPROTO_TCP);
|
|
fflush(dump_fp);
|
|
exit(0);
|
|
}
|
|
|
|
if (ssfilter_parse(¤t_filter.f, argc, argv, filter_fp))
|
|
usage();
|
|
|
|
netid_width = 0;
|
|
if (current_filter.dbs&(current_filter.dbs-1))
|
|
netid_width = 5;
|
|
|
|
state_width = 0;
|
|
if (current_filter.states&(current_filter.states-1))
|
|
state_width = 10;
|
|
|
|
if (isatty(STDOUT_FILENO)) {
|
|
struct winsize w;
|
|
|
|
if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &w) != -1) {
|
|
if (w.ws_col > 0)
|
|
screen_width = w.ws_col;
|
|
}
|
|
}
|
|
|
|
addrp_width = screen_width;
|
|
if (netid_width)
|
|
addrp_width -= netid_width + 1;
|
|
if (state_width)
|
|
addrp_width -= state_width + 1;
|
|
addrp_width -= 14;
|
|
|
|
if (addrp_width&1) {
|
|
if (netid_width)
|
|
netid_width++;
|
|
else if (state_width)
|
|
state_width++;
|
|
else
|
|
odd_width_pad = " ";
|
|
}
|
|
|
|
addrp_width /= 2;
|
|
addrp_width--;
|
|
|
|
serv_width = resolve_services ? 7 : 5;
|
|
|
|
if (addrp_width < 15+serv_width+1)
|
|
addrp_width = 15+serv_width+1;
|
|
|
|
addr_width = addrp_width - serv_width - 1;
|
|
|
|
if (show_header) {
|
|
if (netid_width)
|
|
printf("%-*s ", netid_width, "Netid");
|
|
if (state_width)
|
|
printf("%-*s ", state_width, "State");
|
|
printf("%-6s %-6s %s", "Recv-Q", "Send-Q", odd_width_pad);
|
|
}
|
|
|
|
/* Make enough space for the local/remote port field */
|
|
addr_width -= 13;
|
|
serv_width += 13;
|
|
|
|
if (show_header) {
|
|
printf("%*s:%-*s %*s:%-*s\n",
|
|
addr_width, "Local Address", serv_width, "Port",
|
|
addr_width, "Peer Address", serv_width, "Port");
|
|
}
|
|
|
|
fflush(stdout);
|
|
|
|
if (follow_events)
|
|
exit(handle_follow_request(¤t_filter));
|
|
|
|
if (current_filter.dbs & (1<<NETLINK_DB))
|
|
netlink_show(¤t_filter);
|
|
if (current_filter.dbs & PACKET_DBM)
|
|
packet_show(¤t_filter);
|
|
if (current_filter.dbs & UNIX_DBM)
|
|
unix_show(¤t_filter);
|
|
if (current_filter.dbs & (1<<RAW_DB))
|
|
raw_show(¤t_filter);
|
|
if (current_filter.dbs & (1<<UDP_DB))
|
|
udp_show(¤t_filter);
|
|
if (current_filter.dbs & (1<<TCP_DB))
|
|
tcp_show(¤t_filter);
|
|
if (current_filter.dbs & (1<<DCCP_DB))
|
|
dccp_show(¤t_filter);
|
|
if (current_filter.dbs & (1<<SCTP_DB))
|
|
sctp_show(¤t_filter);
|
|
|
|
if (show_users || show_proc_ctx || show_sock_ctx)
|
|
user_ent_destroy();
|
|
|
|
return 0;
|
|
}
|