+/*
+ * ss.c "sockstat", socket statistics
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ *
+ * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <syslog.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <sys/socket.h>
+#include <sys/uio.h>
+#include <netinet/in.h>
+#include <string.h>
+#include <errno.h>
+#include <netdb.h>
+#include <arpa/inet.h>
+#include <resolv.h>
+#include <dirent.h>
+#include <fnmatch.h>
+
+#include "utils.h"
+#include "rt_names.h"
+#include "ll_map.h"
+#include "libnetlink.h"
+#include "tcp_diag.h"
+#include "SNAPSHOT.h"
+
+#include <linux/tcp.h>
+
+int resolve_hosts = 0;
+int resolve_services = 1;
+int preferred_family = AF_UNSPEC;
+int show_options = 0;
+int show_details = 0;
+int show_users = 0;
+int show_mem = 0;
+int show_tcpinfo = 0;
+
+int netid_width;
+int state_width;
+int addrp_width;
+int addr_width;
+int serv_width;
+int screen_width;
+
+static const char *TCP_PROTO = "tcp";
+static const char *UDP_PROTO = "udp";
+static const char *RAW_PROTO = "raw";
+static const char *dg_proto = NULL;
+
+enum
+{
+ TCP_DB,
+ UDP_DB,
+ RAW_DB,
+ UNIX_DG_DB,
+ UNIX_ST_DB,
+ PACKET_DG_DB,
+ PACKET_R_DB,
+ NETLINK_DB,
+ MAX_DB
+};
+
+#define PACKET_DBM ((1<<PACKET_DG_DB)|(1<<PACKET_R_DB))
+#define UNIX_DBM ((1<<UNIX_DG_DB)|(1<<UNIX_ST_DB))
+#define ALL_DB ((1<<MAX_DB)-1)
+
+enum {
+ SS_UNKNOWN,
+ SS_ESTABLISHED,
+ SS_SYN_SENT,
+ SS_SYN_RECV,
+ SS_FIN_WAIT1,
+ SS_FIN_WAIT2,
+ SS_TIME_WAIT,
+ SS_CLOSE,
+ SS_CLOSE_WAIT,
+ SS_LAST_ACK,
+ SS_LISTEN,
+ SS_CLOSING,
+ SS_MAX
+};
+
+#define SS_ALL ((1<<SS_MAX)-1)
+
+#include "ssfilter.h"
+
+struct filter
+{
+ int dbs;
+ int states;
+ int families;
+ struct ssfilter *f;
+};
+
+struct filter default_filter = {
+ dbs: (1<<TCP_DB),
+ states: SS_ALL & ~((1<<SS_LISTEN)|(1<<SS_CLOSE)|(1<<SS_TIME_WAIT)|(1<<SS_SYN_RECV)),
+ families: (1<<AF_INET)|(1<<AF_INET6),
+};
+
+struct filter current_filter;
+
+int generic_proc_open(char *env, char *name)
+{
+ char store[128];
+ char *p = getenv(env);
+ if (!p) {
+ p = getenv("PROC_ROOT") ? : "/proc";
+ snprintf(store, sizeof(store)-1, "%s/%s", p, name);
+ p = store;
+ }
+ return open(store, O_RDONLY);
+}
+
+int net_tcp_open(void)
+{
+ return generic_proc_open("PROC_NET_TCP", "net/tcp");
+}
+
+int net_tcp6_open(void)
+{
+ return generic_proc_open("PROC_NET_TCP6", "net/tcp6");
+}
+
+int net_udp_open(void)
+{
+ return generic_proc_open("PROC_NET_UDP", "net/udp");
+}
+
+int net_udp6_open(void)
+{
+ return generic_proc_open("PROC_NET_UDP6", "net/udp6");
+}
+
+int net_raw_open(void)
+{
+ return generic_proc_open("PROC_NET_RAW", "net/raw");
+}
+
+int net_raw6_open(void)
+{
+ return generic_proc_open("PROC_NET_RAW6", "net/raw6");
+}
+
+int net_unix_open(void)
+{
+ return generic_proc_open("PROC_NET_UNIX", "net/unix");
+}
+
+int net_packet_open(void)
+{
+ return generic_proc_open("PROC_NET_PACKET", "net/packet");
+}
+
+int net_netlink_open(void)
+{
+ return generic_proc_open("PROC_NET_NETLINK", "net/netlink");
+}
+
+int slabinfo_open(void)
+{
+ return generic_proc_open("PROC_SLABINFO", "slabinfo");
+}
+
+int net_sockstat_open(void)
+{
+ return generic_proc_open("PROC_NET_SOCKSTAT", "net/sockstat");
+}
+
+int net_sockstat6_open(void)
+{
+ return generic_proc_open("PROC_NET_SOCKSTAT6", "net/sockstat6");
+}
+
+int net_snmp_open(void)
+{
+ return generic_proc_open("PROC_NET_SNMP", "net/snmp");
+}
+
+int net_netstat_open(void)
+{
+ return generic_proc_open("PROC_NET_NETSTAT", "net/netstat");
+}
+
+int ephemeral_ports_open(void)
+{
+ return generic_proc_open("PROC_IP_LOCAL_PORT_RANGE", "sys/net/ipv4/ip_local_port_range");
+}
+
+int find_users(int ino, char *buf, int buflen)
+{
+ char pattern[64];
+ int pattern_len;
+ char *ptr = buf;
+ char name[1024];
+ DIR *dir;
+ struct dirent *d;
+ int cnt = 0;
+ int nameoff;
+
+ if (!ino)
+ return 0;
+
+ sprintf(pattern, "socket:[%d]", ino);
+ pattern_len = strlen(pattern);
+
+ strncpy(name, getenv("PROC_ROOT") ? : "/proc/", sizeof(name)/2);
+ name[sizeof(name)/2] = 0;
+ if (strlen(name) == 0 ||
+ name[strlen(name)-1] != '/')
+ strcat(name, "/");
+ nameoff = strlen(name);
+ if ((dir = opendir(name)) == NULL)
+ return 0;
+
+ while ((d = readdir(dir)) != NULL) {
+ DIR *dir1;
+ struct dirent *d1;
+ int pid;
+ int pos;
+ char crap;
+ char process[16];
+
+ if (sscanf(d->d_name, "%d%c", &pid, &crap) != 1)
+ continue;
+
+ sprintf(name+nameoff, "%d/fd/", pid);
+ pos = strlen(name);
+ if ((dir1 = opendir(name)) == NULL)
+ continue;
+
+ process[0] = 0;
+
+ while ((d1 = readdir(dir1)) != NULL) {
+ int fd, n;
+ char lnk[64];
+
+ if (sscanf(d1->d_name, "%d%c", &fd, &crap) != 1)
+ continue;
+
+ sprintf(name+pos, "%d", fd);
+ n = readlink(name, lnk, sizeof(lnk)-1);
+ if (n != pattern_len ||
+ memcmp(lnk, pattern, n))
+ continue;
+
+ if (ptr-buf >= buflen-1)
+ break;
+
+ if (process[0] == 0) {
+ char tmp[1024];
+ FILE *fp;
+ snprintf(tmp, sizeof(tmp), "%s/%d/stat",
+ getenv("PROC_ROOT") ? : "/proc", pid);
+ if ((fp = fopen(tmp, "r")) != NULL) {
+ fscanf(fp, "%*d (%[^)])", process);
+ fclose(fp);
+ }
+ }
+
+ snprintf(ptr, buflen-(ptr-buf), "(\"%s\",%d,%d),", process, pid, fd);
+ ptr += strlen(ptr);
+ cnt++;
+ }
+ closedir(dir1);
+ }
+ closedir(dir);
+ if (ptr != buf)
+ ptr[-1] = 0;
+ return cnt;
+}
+
+
+/* Get stats from slab */
+
+struct slabstat
+{
+ int socks;
+ int tcp_ports;
+ int tcp_tws;
+ int tcp_syns;
+ int skbs;
+};
+
+struct slabstat slabstat;
+
+const char *slabstat_ids[] =
+{
+ "sock",
+ "tcp_bind_bucket",
+ "tcp_tw_bucket",
+ "tcp_open_request",
+ "skbuff_head_cache",
+};
+
+int get_slabstat(struct slabstat *s)
+{
+ char buf[256];
+ FILE *fp;
+ int cnt;
+
+ memset(s, 0, sizeof(*s));
+
+ if ((fp = fdopen(slabinfo_open(), "r")) == NULL)
+ return -1;
+
+ cnt = sizeof(*s)/sizeof(int);
+
+ fgets(buf, sizeof(buf), fp);
+ while(fgets(buf, sizeof(buf), fp) != NULL) {
+ int i;
+ for (i=0; i<sizeof(slabstat_ids)/sizeof(slabstat_ids[0]); 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;
+ }
+
+ fclose(fp);
+ return 0;
+}
+
+
+
+
+char *sstate_name[] = {
+ "UNKNOWN",
+ "ESTAB",
+ "SYN-SENT",
+ "SYN-RECV",
+ "FIN-WAIT-1",
+ "FIN-WAIT-2",
+ "TIME-WAIT",
+ "UNCONN",
+ "CLOSE-WAIT",
+ "LAST-ACK",
+ "LISTEN",
+ "CLOSING",
+};
+
+char *sstate_namel[] = {
+ "UNKNOWN",
+ "established",
+ "syn-sent",
+ "syn-recv",
+ "fin-wait-1",
+ "fin-wait-2",
+ "time-wait",
+ "unconnected",
+ "close-wait",
+ "last-ack",
+ "listening",
+ "closing",
+};
+
+struct tcpstat
+{
+ inet_prefix local;
+ inet_prefix remote;
+ int lport;
+ int rport;
+ int state;
+ int rq, wq;
+ int timer;
+ int timeout;
+ int retrs;
+ int ino;
+ int probes;
+ int uid;
+ int refcnt;
+ unsigned long long sk;
+ int rto, ato, qack, cwnd, ssthresh;
+};
+
+char *tmr_name[] = {
+ "off",
+ "on",
+ "keepalive",
+ "timewait",
+ "persist",
+ "unknown"
+};
+
+char *print_ms_timer(int timeout)
+{
+ static char buf[64];
+ int secs, msecs, minutes;
+ if (timeout < 0)
+ timeout = 0;
+ 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;
+};
+
+char *print_hz_timer(int timeout)
+{
+ int hz = get_hz();
+ return print_ms_timer(((timeout*1000) + hz-1)/hz);
+};
+
+struct scache
+{
+ struct scache *next;
+ int port;
+ char *name;
+ const char *proto;
+};
+
+struct scache *rlist;
+
+void init_service_resolver(void)
+{
+ char buf[128];
+ FILE *fp = popen("/usr/sbin/rpcinfo -p 2>/dev/null", "r");
+ if (fp) {
+ fgets(buf, sizeof(buf), fp);
+ while (fgets(buf, sizeof(buf), fp) != NULL) {
+ unsigned int progn, port;
+ char proto[128], prog[128];
+ if (sscanf(buf, "%u %*d %s %u %s", &progn, proto,
+ &port, prog+4) == 4) {
+ struct scache *c = malloc(sizeof(*c));
+ if (c) {
+ c->port = port;
+ memcpy(prog, "rpc.", 4);
+ 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
+ c->proto = NULL;
+ c->next = rlist;
+ rlist = c;
+ }
+ }
+ }
+ }
+}
+
+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;
+ }
+
+ /* 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.
+ */
+ if (port < 32768 && (port < 1024 || port > 4999)) {
+ 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;
+}
+
+
+const char *resolve_service(int port)
+{
+ static char buf[128];
+ static struct scache cache[256];
+
+ if (port == 0) {
+ buf[0] = '*';
+ buf[1] = 0;
+ return buf;
+ }
+
+ if (resolve_services) {
+ if (dg_proto == RAW_PROTO) {
+ return inet_proto_n2a(port, buf, sizeof(buf));
+ } else {
+ struct scache *c;
+ const char *res;
+ int hash = (port^(((unsigned long)dg_proto)>>2))&255;
+
+ for (c = &cache[hash]; c; c = c->next) {
+ if (c->port == port &&
+ c->proto == dg_proto) {
+ if (c->name)
+ return c->name;
+ goto do_numeric;
+ }
+ }
+
+ if ((res = __resolve_service(port)) != NULL) {
+ if ((c = malloc(sizeof(*c))) == NULL)
+ goto do_numeric;
+ } else {
+ c = &cache[hash];
+ if (c->name)
+ free(c->name);
+ }
+ c->port = port;
+ c->name = NULL;
+ c->proto = dg_proto;
+ if (res) {
+ c->name = strdup(res);
+ c->next = cache[hash].next;
+ cache[hash].next = c;
+ }
+ if (c->name)
+ return c->name;
+ }
+ }
+
+ do_numeric:
+ sprintf(buf, "%u", port);
+ return buf;
+}
+
+void formatted_print(inet_prefix *a, int port)
+{
+ char buf[1024];
+ const char *ap = buf;
+ int est_len;
+
+ est_len = addr_width;
+
+ if (a->family == AF_INET) {
+ if (a->data[0] == 0) {
+ buf[0] = '*';
+ buf[1] = 0;
+ } else {
+ ap = format_host(AF_INET, 4, a->data, buf, sizeof(buf));
+ }
+ } else {
+ ap = format_host(a->family, 16, a->data, buf, sizeof(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;
+ }
+ printf("%*s:%-*s ", est_len, ap, serv_width, resolve_service(port));
+}
+
+struct aafilter
+{
+ inet_prefix addr;
+ int port;
+ struct aafilter *next;
+};
+
+int inet2_addr_match(inet_prefix *a, 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;
+}
+
+int unix_match(inet_prefix *a, 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);
+}
+
+int run_ssfilter(struct ssfilter *f, struct tcpstat *s)
+{
+ switch (f->type) {
+ case SSF_S_AUTO:
+ {
+ static int low, high=65535;
+
+ 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;
+ if (s->local.family == AF_NETLINK)
+ return s->lport < 0;
+
+ if (!low) {
+ FILE *fp = fdopen(ephemeral_ports_open(), "r");
+ if (fp) {
+ fscanf(fp, "%d%d", &low, &high);
+ fclose(fp);
+ }
+ }
+ return s->lport >= low && s->lport <= high;
+ }
+ 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;
+ }
+
+ /* 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. */
+void ssfilter_patch(char *a, int len, int reloc)
+{
+ while (len > 0) {
+ struct tcpdiag_bc_op *op = (struct tcpdiag_bc_op*)a;
+ if (op->no == len+4)
+ op->no += reloc;
+ len -= op->yes;
+ a += op->yes;
+ }
+ if (len < 0)
+ abort();
+}
+
+int ssfilter_bytecompile(struct ssfilter *f, char **bytecode)
+{
+ switch (f->type) {
+ case SSF_S_AUTO:
+ {
+ if (!(*bytecode=malloc(4))) abort();
+ ((struct tcpdiag_bc_op*)*bytecode)[0] = (struct tcpdiag_bc_op){ TCPDIAG_BC_AUTO, 4, 8 };
+ return 8;
+ }
+ case SSF_DCOND:
+ case SSF_SCOND:
+ {
+ struct aafilter *a = (void*)f->pred;
+ struct aafilter *b;
+ char *ptr;
+ int code = (f->type == SSF_DCOND ? TCPDIAG_BC_D_COND : TCPDIAG_BC_S_COND);
+ int len = 0;
+
+ for (b=a; b; b=b->next) {
+ len += 4 + sizeof(struct tcpdiag_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 tcpdiag_bc_op *op = (struct tcpdiag_bc_op *)ptr;
+ int alen = (a->addr.family == AF_INET6 ? 16 : 4);
+ int oplen = alen + 4 + sizeof(struct tcpdiag_hostcond);
+ struct tcpdiag_hostcond *cond = (struct tcpdiag_hostcond*)(ptr+4);
+
+ *op = (struct tcpdiag_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 tcpdiag_bc_op *)ptr;
+ *op = (struct tcpdiag_bc_op){ TCPDIAG_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 tcpdiag_bc_op*)*bytecode)[0] = (struct tcpdiag_bc_op){ TCPDIAG_BC_D_GE, 8, 12 };
+ ((struct tcpdiag_bc_op*)*bytecode)[1] = (struct tcpdiag_bc_op){ 0, 0, x->port };
+ return 8;
+ }
+ case SSF_D_LE:
+ {
+ struct aafilter *x = (void*)f->pred;
+ if (!(*bytecode=malloc(8))) abort();
+ ((struct tcpdiag_bc_op*)*bytecode)[0] = (struct tcpdiag_bc_op){ TCPDIAG_BC_D_LE, 8, 12 };
+ ((struct tcpdiag_bc_op*)*bytecode)[1] = (struct tcpdiag_bc_op){ 0, 0, x->port };
+ return 8;
+ }
+ case SSF_S_GE:
+ {
+ struct aafilter *x = (void*)f->pred;
+ if (!(*bytecode=malloc(8))) abort();
+ ((struct tcpdiag_bc_op*)*bytecode)[0] = (struct tcpdiag_bc_op){ TCPDIAG_BC_S_GE, 8, 12 };
+ ((struct tcpdiag_bc_op*)*bytecode)[1] = (struct tcpdiag_bc_op){ 0, 0, x->port };
+ return 8;
+ }
+ case SSF_S_LE:
+ {
+ struct aafilter *x = (void*)f->pred;
+ if (!(*bytecode=malloc(8))) abort();
+ ((struct tcpdiag_bc_op*)*bytecode)[0] = (struct tcpdiag_bc_op){ TCPDIAG_BC_S_LE, 8, 12 };
+ ((struct tcpdiag_bc_op*)*bytecode)[1] = (struct tcpdiag_bc_op){ 0, 0, x->port };
+ return 8;
+ }
+
+ case SSF_AND:
+ {
+ char *a1, *a2, *a, l1, l2;
+ l1 = ssfilter_bytecompile(f->pred, &a1);
+ l2 = ssfilter_bytecompile(f->post, &a2);
+ 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, *a2, *a, l1, l2;
+ l1 = ssfilter_bytecompile(f->pred, &a1);
+ l2 = ssfilter_bytecompile(f->post, &a2);
+ if (!(a = malloc(l1+l2+4))) abort();
+ memcpy(a, a1, l1);
+ memcpy(a+l1+4, a2, l2);
+ free(a1); free(a2);
+ *(struct tcpdiag_bc_op*)(a+l1) = (struct tcpdiag_bc_op){ TCPDIAG_BC_JMP, 4, l2+4 };
+ *bytecode = a;
+ return l1+l2+4;
+ }
+ case SSF_NOT:
+ {
+ char *a1, *a, l1;
+ l1 = ssfilter_bytecompile(f->pred, &a1);
+ if (!(a = malloc(l1+4))) abort();
+ memcpy(a, a1, l1);
+ free(a1);
+ *(struct tcpdiag_bc_op*)(a+l1) = (struct tcpdiag_bc_op){ TCPDIAG_BC_JMP, 4, 8 };
+ *bytecode = a;
+ return l1+4;
+ }
+ default:
+ abort();
+ }
+}
+
+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;
+ b->next = a->next;
+ 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;
+}
+
+int get_dns_host(struct aafilter *a, 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;
+}
+
+int xll_initted = 0;
+
+void xll_init(void)
+{
+ struct rtnl_handle rth;
+ rtnl_open(&rth, 0);
+ ll_init_map(&rth);
+ rtnl_close(&rth);
+ xll_initted = 1;
+}
+
+const char *xll_index_to_name(int index)
+{
+ if (!xll_initted)
+ xll_init();
+ return ll_index_to_name(index);
+}
+
+int xll_name_to_index(char *dev)
+{
+ if (!xll_initted)
+ xll_init();
+ return ll_name_to_index(dev);
+}
+
+void *parse_hostcond(char *addr)
+{
+ char *port = NULL;
+ struct aafilter a;
+ struct aafilter *res;
+ int fam = preferred_family;
+
+ memset(&a, 0, sizeof(a));
+ a.port = -1;
+
+ 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));
+ 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);
+ }
+ 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 (get_u32(a.addr.data, addr, 0)) {
+ if (strcmp(addr, "rtnl") == 0)
+ a.addr.data[0] = 0;
+ else if (strcmp(addr, "fw") == 0)
+ a.addr.data[0] = 3;
+ else if (strcmp(addr, "tcpdiag") == 0)
+ a.addr.data[0] = 4;
+ else
+ return NULL;
+ }
+ }
+ goto out;
+ }
+
+ if (strncmp(addr, "inet:", 5) == 0) {
+ addr += 5;
+ fam = AF_INET;
+ } else if (strncmp(addr, "inet6:", 6) == 0) {
+ addr += 6;
+ fam = AF_INET6;
+ }
+
+ /* 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 (port && *port) {
+ if (*port != ':')
+ return NULL;
+ *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 (addr && *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:
+ res = malloc(sizeof(*res));
+ if (res)
+ memcpy(res, &a, sizeof(a));
+ return res;
+}
+
+int tcp_show_line(char *line, struct filter *f, int family)
+{
+ struct tcpstat s;
+ char *loc, *rem, *data;
+ char opt[256];
+ int n;
+ 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;
+
+ do {
+ int state = (data[1] >= 'A') ? (data[1] - 'A' + 10) : (data[1] - '0');
+
+ if (!(f->states & (1<<state)))
+ return 0;
+ } while (0);
+
+ 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;
+ } 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;
+ }
+
+ 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 %d %d %llx %d %d %d %d %d %[^\n]\n",
+ &s.state, &s.wq, &s.rq,
+ &s.timer, &s.timeout, &s.retrs, &s.uid, &s.probes, &s.ino,
+ &s.refcnt, &s.sk, &s.rto, &s.ato, &s.qack,
+ &s.cwnd, &s.ssthresh, opt);
+
+ if (n < 17)
+ opt[0] = 0;
+
+ if (n < 12) {
+ s.rto = 0;
+ s.cwnd = 2;
+ s.ssthresh = -1;
+ s.ato = s.qack = 0;
+ }
+
+ if (netid_width)
+ printf("%-*s ", netid_width, "tcp");
+ if (state_width)
+ printf("%-*s ", state_width, sstate_name[s.state]);
+
+ printf("%-6d %-6d ", s.rq, s.wq);
+
+ formatted_print(&s.local, s.lport);
+ formatted_print(&s.remote, s.rport);
+
+ if (show_options) {
+ if (s.timer) {
+ if (s.timer > 4)
+ s.timer = 5;
+ printf(" timer:(%s,%s,%d)",
+ tmr_name[s.timer],
+ print_hz_timer(s.timeout),
+ s.timer != 1 ? s.probes : s.retrs);
+ }
+ }
+ if (show_tcpinfo) {
+ if (s.rto && s.rto != 3*get_hz())
+ printf(" rto:%g", (double)s.rto/get_hz());
+ if (s.ato)
+ printf(" ato:%g", (double)s.ato/get_hz());
+ if (s.cwnd != 2)
+ printf(" cwnd:%d", s.cwnd);
+ if (s.ssthresh != -1)
+ printf(" ssthresh:%d", s.ssthresh);
+ if (s.qack/2)
+ printf(" qack:%d", s.qack/2);
+ if (s.qack&1)
+ printf(" bidir");
+ }
+ if (show_users) {
+ char ubuf[4096];
+ if (find_users(s.ino, ubuf, sizeof(ubuf)) > 0)
+ printf(" users:(%s)", ubuf);
+ }
+ if (show_details) {
+ if (s.uid)
+ printf(" uid:%u", (unsigned)s.uid);
+ printf(" ino:%u", (unsigned)s.ino);
+ printf(" sk:%llx", s.sk);
+ if (opt[0])
+ printf(" opt:\"%s\"", opt);
+ }
+ printf("\n");
+
+ return 0;
+}
+
+int generic_record_read(int fd, char *buf, int bufsize,
+ int (*worker)(char*, struct filter *, int),
+ struct filter *f, int fam)
+{
+ int n;
+ int recsize;
+ int eof = 0;
+ char *p;
+
+ /* Load the first chunk and calculate record length from it. */
+ n = read(fd, buf, bufsize);
+ if (n < 0)
+ goto outerr;
+ /* I _know_ that this is wrong, do not remind. :-)
+ * But this works nowadays. */
+ if (n < bufsize)
+ eof = 1;
+ p = memchr(buf, '\n', n);
+ if (p == NULL || (p-buf) >= n)
+ goto outwrongformat;
+ recsize = (p-buf)+1;
+ p = buf+recsize;
+
+ for (;;) {
+ while ((p+recsize) - buf <= n) {
+ if (p[recsize-1] != '\n')
+ goto outwrongformat;
+ p[recsize-1] = 0;
+ if (worker(p, f, fam) < 0)
+ goto done;
+ p += recsize;
+ }
+ if (!eof) {
+ int remains = (buf+bufsize) - p;
+ memcpy(buf, p, remains);
+ p = buf+remains;
+ n = read(fd, p, (buf+bufsize) - p);
+ if (n < 0)
+ goto outerr;
+ if (n < (buf+bufsize) - p) {
+ eof = 1;
+ if (n == 0) {
+ if (remains)
+ goto outwrongformat;
+ goto done;
+ }
+ }
+ n += remains;
+ p = buf;
+ } else {
+ if (p != buf+n)
+ goto outwrongformat;
+ goto done;
+ }
+ }
+done:
+ return 0;
+
+outwrongformat:
+ errno = EINVAL;
+outerr:
+ return -1;
+}
+
+
+int tcp_show_sock(struct nlmsghdr *nlh, struct filter *f)
+{
+ struct tcpdiagmsg *r = NLMSG_DATA(nlh);
+ struct tcpstat s;
+
+ s.state = r->tcpdiag_state;
+ s.local.family = s.remote.family = r->tcpdiag_family;
+ s.lport = ntohs(r->id.tcpdiag_sport);
+ s.rport = ntohs(r->id.tcpdiag_dport);
+ 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.tcpdiag_src, s.local.bytelen);
+ memcpy(s.remote.data, r->id.tcpdiag_dst, s.local.bytelen);
+
+ if (f && f->f && run_ssfilter(f->f, &s) == 0)
+ return 0;
+
+ if (netid_width)
+ printf("%-*s ", netid_width, "tcp");
+ if (state_width)
+ printf("%-*s ", state_width, sstate_name[s.state]);
+
+ printf("%-6d %-6d ", r->tcpdiag_rqueue, r->tcpdiag_wqueue);
+
+ formatted_print(&s.local, s.lport);
+ formatted_print(&s.remote, s.rport);
+
+ if (show_options) {
+ if (r->tcpdiag_timer) {
+ if (r->tcpdiag_timer > 4)
+ r->tcpdiag_timer = 5;
+ printf(" timer:(%s,%s,%d)",
+ tmr_name[r->tcpdiag_timer],
+ print_ms_timer(r->tcpdiag_expires),
+ r->tcpdiag_retrans);
+ }
+ }
+ if (show_users) {
+ char ubuf[4096];
+ if (find_users(r->tcpdiag_inode, ubuf, sizeof(ubuf)) > 0)
+ printf(" users:(%s)", ubuf);
+ }
+ if (show_details) {
+ if (r->tcpdiag_uid)
+ printf(" uid:%u", (unsigned)r->tcpdiag_uid);
+ printf(" ino:%u", (unsigned)r->tcpdiag_inode);
+ printf(" sk:%08x", r->id.tcpdiag_cookie[0]);
+ if (r->id.tcpdiag_cookie[1] != 0)
+ printf("%08x", r->id.tcpdiag_cookie[1]);
+ }
+ if (show_mem || show_tcpinfo) {
+ struct rtattr * tb[TCPDIAG_MAX+1];
+ struct tcpdiag_meminfo *minfo = NULL;
+ struct tcp_info *info = NULL;
+
+ memset(tb, 0, sizeof(tb));
+ parse_rtattr(tb, TCPDIAG_MAX, (struct rtattr*)(r+1),
+ nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
+ if (tb[TCPDIAG_MEMINFO])
+ minfo = RTA_DATA(tb[TCPDIAG_MEMINFO]);
+ if (tb[TCPDIAG_INFO])
+ info = RTA_DATA(tb[TCPDIAG_INFO]);
+ if (minfo) {
+ printf(" mem:(r%u,w%u,f%u,t%u)",
+ minfo->tcpdiag_rmem,
+ minfo->tcpdiag_wmem,
+ minfo->tcpdiag_fmem,
+ minfo->tcpdiag_tmem);
+ }
+ if (info) {
+#ifdef TCP_INFO
+ if (info->tcpi_rto && info->tcpi_rto != 3000000)
+ printf(" rto:%g", (double)info->tcpi_rto/1000);
+ if (info->tcpi_rtt)
+ printf(" rtt:%g/%g", (double)info->tcpi_rtt/1000,
+ (double)info->tcpi_rttvar/1000);
+ if (info->tcpi_ato)
+ printf(" ato:%g", (double)info->tcpi_ato/1000);
+ if (info->tcpi_snd_cwnd != 2)
+ printf(" cwnd:%d", info->tcpi_snd_cwnd);
+ if (info->tcpi_snd_ssthresh < 0xFFFF)
+ printf(" ssthresh:%d", info->tcpi_snd_ssthresh);
+#else
+#warning No TCP_INFO. Please, do not repeat this experiment, use right kernel.
+ printf(" MORE_INFO_PROVIDED_YOU_COMPILED_SS_RIGHT");
+#endif
+ }
+ }
+ printf("\n");
+
+ return 0;
+
+}
+
+int tcp_show_netlink(struct filter *f, FILE *dump_fp)
+{
+ int fd;
+ struct sockaddr_nl nladdr;
+ struct {
+ struct nlmsghdr nlh;
+ struct tcpdiagreq r;
+ } req;
+ char *bc = NULL;
+ int bclen;
+ struct msghdr msg;
+ struct rtattr rta;
+ char buf[8192];
+ struct iovec iov[3];
+
+ if ((fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_TCPDIAG)) < 0)
+ return -1;
+
+ memset(&nladdr, 0, sizeof(nladdr));
+ nladdr.nl_family = AF_NETLINK;
+
+ req.nlh.nlmsg_len = sizeof(req);
+ req.nlh.nlmsg_type = TCPDIAG_GETSOCK;
+ req.nlh.nlmsg_flags = NLM_F_ROOT|NLM_F_MATCH|NLM_F_REQUEST;
+ req.nlh.nlmsg_pid = 0;
+ req.nlh.nlmsg_seq = 123456;
+ memset(&req.r, 0, sizeof(req.r));
+ req.r.tcpdiag_family = AF_INET;
+ req.r.tcpdiag_states = f->states;
+ if (show_mem)
+ req.r.tcpdiag_ext |= (1<<(TCPDIAG_MEMINFO-1));
+ if (show_tcpinfo)
+ req.r.tcpdiag_ext |= (1<<(TCPDIAG_INFO-1));
+
+ iov[0] = (struct iovec){ &req, sizeof(req) };
+ if (f->f) {
+ bclen = ssfilter_bytecompile(f->f, &bc);
+ rta.rta_type = TCPDIAG_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);
+ }
+
+ msg = (struct msghdr) {
+ (void*)&nladdr, sizeof(nladdr),
+ iov, f->f ? 3 : 1,
+ NULL, 0,
+ 0
+ };
+
+ if (sendmsg(fd, &msg, 0) < 0)
+ return -1;
+
+
+ iov[0] = (struct iovec){ buf, sizeof(buf) };
+
+ while (1) {
+ int status;
+ struct nlmsghdr *h;
+
+ msg = (struct msghdr) {
+ (void*)&nladdr, sizeof(nladdr),
+ iov, 1,
+ NULL, 0,
+ 0
+ };
+
+ status = recvmsg(fd, &msg, 0);
+
+ if (status < 0) {
+ if (errno == EINTR)
+ continue;
+ perror("OVERRUN");
+ continue;
+ }
+ if (status == 0) {
+ fprintf(stderr, "EOF on netlink\n");
+ return 0;
+ }
+
+ if (dump_fp)
+ fwrite(buf, 1, NLMSG_ALIGN(status), dump_fp);
+
+ h = (struct nlmsghdr*)buf;
+ while (NLMSG_OK(h, status)) {
+ int err;
+
+ if (/*h->nlmsg_pid != rth->local.nl_pid ||*/
+ h->nlmsg_seq != 123456)
+ goto skip_it;
+
+ if (h->nlmsg_type == NLMSG_DONE)
+ return 0;
+ 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 answers");
+ }
+ return 0;
+ }
+ if (!dump_fp) {
+ err = tcp_show_sock(h, NULL);
+ if (err < 0)
+ return err;
+ }
+
+skip_it:
+ h = NLMSG_NEXT(h, status);
+ }
+ if (msg.msg_flags & MSG_TRUNC) {
+ fprintf(stderr, "Message truncated\n");
+ continue;
+ }
+ if (status) {
+ fprintf(stderr, "!!!Remnant of size %d\n", status);
+ exit(1);
+ }
+ }
+ return 0;
+}
+
+int tcp_show_netlink_file(struct filter *f)
+{
+ FILE *fp;
+ char buf[8192];
+
+ if ((fp = fopen(getenv("TCPDIAG_FILE"), "r")) == NULL) {
+ perror("fopen($TCPDIAG_FILE)");
+ return -1;
+ }
+
+ while (1) {
+ int status, err;
+ struct nlmsghdr *h = (struct nlmsghdr*)buf;
+
+ status = fread(buf, 1, sizeof(*h), fp);
+ if (status < 0) {
+ perror("Reading header from $TCPDIAG_FILE");
+ return -1;
+ }
+ if (status != sizeof(*h)) {
+ perror("Unexpected EOF reading $TCPDIAG_FILE");
+ return -1;
+ }
+
+ status = fread(h+1, 1, NLMSG_ALIGN(h->nlmsg_len-sizeof(*h)), fp);
+
+ if (status < 0) {
+ perror("Reading $TCPDIAG_FILE");
+ return -1;
+ }
+ if (status + sizeof(*h) < h->nlmsg_len) {
+ perror("Unexpected EOF reading $TCPDIAG_FILE");
+ return -1;
+ }
+
+ /* The only legal exit point */
+ if (h->nlmsg_type == NLMSG_DONE)
+ return 0;
+
+ 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");
+ }
+ return -1;
+ }
+
+ err = tcp_show_sock(h, f);
+ if (err < 0)
+ return err;
+ }
+}
+
+int tcp_show(struct filter *f)
+{
+ int fd = -1;
+ char *buf = NULL;
+ int bufsize = 64*1024;
+
+ dg_proto = TCP_PROTO;
+
+ if (getenv("TCPDIAG_FILE"))
+ return tcp_show_netlink_file(f);
+
+ if (!getenv("PROC_NET_TCP") && !getenv("PROC_ROOT")
+ && tcp_show_netlink(f, NULL) == 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) {
+ 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 ((fd = net_tcp_open()) < 0)
+ goto outerr;
+ if (generic_record_read(fd, buf, bufsize, tcp_show_line, f, AF_INET))
+ goto outerr;
+ close(fd);
+ }
+
+ if ((f->families & (1<<AF_INET6)) &&
+ (fd = net_tcp6_open()) >= 0) {
+ if (generic_record_read(fd, buf, bufsize, tcp_show_line, f, AF_INET6))
+ goto outerr;
+ close(fd);
+ }
+
+ free(buf);
+ return 0;
+
+outerr:
+ do {
+ int saved_errno = errno;
+ if (buf)
+ free(buf);
+ if (fd >= 0)
+ close(fd);
+ errno = saved_errno;
+ return -1;
+ } while (0);
+}
+
+
+int dgram_show_line(char *line, struct filter *f, int family)
+{
+ struct tcpstat s;
+ char *loc, *rem, *data;
+ char opt[256];
+ int n;
+ 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;
+
+ do {
+ int state = (data[1] >= 'A') ? (data[1] - 'A' + 10) : (data[1] - '0');
+
+ if (!(f->states & (1<<state)))
+ return 0;
+ } while (0);
+
+ 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;
+ } 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;
+ }
+
+ 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 %d %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;
+
+ if (netid_width)
+ printf("%-*s ", netid_width, dg_proto);
+ if (state_width)
+ printf("%-*s ", state_width, sstate_name[s.state]);
+
+ printf("%-6d %-6d ", s.rq, s.wq);
+
+ formatted_print(&s.local, s.lport);
+ formatted_print(&s.remote, s.rport);
+
+ if (show_users) {
+ char ubuf[4096];
+ if (find_users(s.ino, ubuf, sizeof(ubuf)) > 0)
+ printf(" users:(%s)", ubuf);
+ }
+
+ if (show_details) {
+ if (s.uid)
+ printf(" uid=%u", (unsigned)s.uid);
+ printf(" ino=%u", (unsigned)s.ino);
+ printf(" sk=%llx", s.sk);
+ if (opt[0])
+ printf(" opt:\"%s\"", opt);
+ }
+ printf("\n");
+
+ return 0;
+}
+
+
+int udp_show(struct filter *f)
+{
+ int fd = -1;
+ char buf[8192];
+ int bufsize = sizeof(buf);
+
+ dg_proto = UDP_PROTO;
+
+ if (f->families&(1<<AF_INET)) {
+ if ((fd = net_udp_open()) < 0)
+ goto outerr;
+ if (generic_record_read(fd, buf, bufsize, dgram_show_line, f, AF_INET))
+ goto outerr;
+ close(fd);
+ }
+
+ if ((f->families&(1<<AF_INET6)) &&
+ (fd = net_udp6_open()) >= 0) {
+ if (generic_record_read(fd, buf, bufsize, dgram_show_line, f, AF_INET6))
+ goto outerr;
+ close(fd);
+ }
+ return 0;
+
+outerr:
+ do {
+ int saved_errno = errno;
+ if (fd >= 0)
+ close(fd);
+ errno = saved_errno;
+ return -1;
+ } while (0);
+}
+
+int raw_show(struct filter *f)
+{
+ int fd = -1;
+ char buf[8192];
+ int bufsize = sizeof(buf);
+
+ dg_proto = RAW_PROTO;
+
+ if (f->families&(1<<AF_INET)) {
+ if ((fd = net_raw_open()) < 0)
+ goto outerr;
+ if (generic_record_read(fd, buf, bufsize, dgram_show_line, f, AF_INET))
+ goto outerr;
+ close(fd);
+ }
+
+ if ((f->families&(1<<AF_INET6)) &&
+ (fd = net_raw6_open()) >= 0) {
+ if (generic_record_read(fd, buf, bufsize, dgram_show_line, f, AF_INET6))
+ goto outerr;
+ close(fd);
+ }
+ return 0;
+
+outerr:
+ do {
+ int saved_errno = errno;
+ if (fd >= 0)
+ close(fd);
+ errno = saved_errno;
+ return -1;
+ } while (0);
+}
+
+
+struct unixstat
+{
+ struct unixstat *next;
+ int ino;
+ int peer;
+ int rq;
+ int wq;
+ int state;
+ int type;
+ char *name;
+};
+
+
+
+int unix_state_map[] = { SS_CLOSE, SS_SYN_SENT,
+ SS_ESTABLISHED, SS_CLOSING };
+
+
+#define MAX_UNIX_REMEMBER (1024*1024/sizeof(struct unixstat))
+
+void unix_list_free(struct unixstat *list)
+{
+ while (list) {
+ struct unixstat *s = list;
+ list = list->next;
+ if (s->name)
+ free(s->name);
+ free(s);
+ }
+}
+
+void unix_list_print(struct unixstat *list, struct filter *f)
+{
+ struct unixstat *s;
+ char *peer;
+
+ for (s = list; s; s = s->next) {
+ if (!(f->states & (1<<s->state)))
+ continue;
+ if (s->type == SOCK_STREAM && !(f->dbs&(1<<UNIX_ST_DB)))
+ continue;
+ if (s->type == SOCK_DGRAM && !(f->dbs&(1<<UNIX_DG_DB)))
+ continue;
+
+ peer = "*";
+ if (s->peer) {
+ struct unixstat *p;
+ for (p = list; p; p = p->next) {
+ if (s->peer == p->ino)
+ break;
+ }
+ if (!p) {
+ peer = "?";
+ } else {
+ peer = p->name ? : "*";
+ }
+ }
+
+ if (f->f) {
+ struct tcpstat tst;
+ tst.local.family = AF_UNIX;
+ tst.remote.family = AF_UNIX;
+ memcpy(tst.local.data, &s->name, sizeof(s->name));
+ if (strcmp(peer, "*") == 0)
+ memset(tst.remote.data, 0, sizeof(peer));
+ else
+ memcpy(tst.remote.data, &peer, sizeof(peer));
+ if (run_ssfilter(f->f, &tst) == 0)
+ continue;
+ }
+
+ if (netid_width)
+ printf("%-*s ", netid_width,
+ s->type == SOCK_STREAM ? "u_str" : "u_dgr");
+ if (state_width)
+ printf("%-*s ", state_width, sstate_name[s->state]);
+ printf("%-6d %-6d ", s->rq, s->wq);
+ printf("%*s %-*d %*s %-*d",
+ addr_width, s->name ? : "*", serv_width, s->ino,
+ addr_width, peer, serv_width, s->peer);
+ if (show_users) {
+ char ubuf[4096];
+ if (find_users(s->ino, ubuf, sizeof(ubuf)) > 0)
+ printf(" users:(%s)", ubuf);
+ }
+ printf("\n");
+ }
+}
+
+int unix_show(struct filter *f)
+{
+ FILE *fp;
+ char buf[256];
+ char name[128];
+ int newformat = 0;
+ int cnt;
+ struct unixstat *list = NULL;
+
+ if ((fp = fdopen(net_unix_open(), "r")) == NULL)
+ return -1;
+ fgets(buf, sizeof(buf)-1, fp);
+
+ if (memcmp(buf, "Peer", 4) == 0)
+ newformat = 1;
+ cnt = 0;
+
+ while (fgets(buf, sizeof(buf)-1, fp)) {
+ struct unixstat *u, **insp;
+ int flags;
+
+ if (!(u = malloc(sizeof(*u))))
+ break;
+ u->name = NULL;
+
+ if (sscanf(buf, "%x: %x %x %x %x %x %d %s",
+ &u->peer, &u->rq, &u->wq, &flags, &u->type,
+ &u->state, &u->ino, name) < 8)
+ name[0] = 0;
+
+ if (flags&(1<<16)) {
+ u->state = SS_LISTEN;
+ } else {
+ u->state = unix_state_map[u->state-1];
+ if (u->type == SOCK_DGRAM &&
+ u->state == SS_CLOSE &&
+ u->peer)
+ u->state = SS_ESTABLISHED;
+ }
+
+ if (!newformat) {
+ u->peer = 0;
+ u->rq = 0;
+ u->wq = 0;
+ }
+
+ 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 (name[0]) {
+ if ((u->name = malloc(strlen(name)+1)) == NULL)
+ break;
+ strcpy(u->name, name);
+ }
+ if (++cnt > MAX_UNIX_REMEMBER) {
+ unix_list_print(list, f);
+ unix_list_free(list);
+ list = NULL;
+ cnt = 0;
+ }
+ }
+
+ if (list) {
+ unix_list_print(list, f);
+ unix_list_free(list);
+ list = NULL;
+ cnt = 0;
+ }
+
+ return 0;
+}
+
+
+int packet_show(struct filter *f)
+{
+ FILE *fp;
+ char buf[256];
+ int type;
+ int prot;
+ int iface;
+ int state;
+ int rq;
+ int uid;
+ int ino;
+ unsigned long long sk;
+
+ if (!(f->states & (1<<SS_CLOSE)))
+ return 0;
+
+ if ((fp = fdopen(net_packet_open(), "r")) == NULL)
+ return -1;
+ fgets(buf, sizeof(buf)-1, fp);
+
+ while (fgets(buf, sizeof(buf)-1, fp)) {
+ sscanf(buf, "%llx %*d %d %x %d %d %u %u %u",
+ &sk,
+ &type, &prot, &iface, &state,
+ &rq, &uid, &ino);
+
+ if (type == SOCK_RAW && !(f->dbs&(1<<PACKET_R_DB)))
+ continue;
+ if (type == SOCK_DGRAM && !(f->dbs&(1<<PACKET_DG_DB)))
+ continue;
+ if (f->f) {
+ struct tcpstat tst;
+ tst.local.family = AF_PACKET;
+ tst.remote.family = AF_PACKET;
+ tst.rport = 0;
+ tst.lport = iface;
+ tst.local.data[0] = prot;
+ tst.remote.data[0] = 0;
+ if (run_ssfilter(f->f, &tst) == 0)
+ continue;
+ }
+
+ if (netid_width)
+ printf("%-*s ", netid_width,
+ type == SOCK_RAW ? "p_raw" : "p_dgr");
+ if (state_width)
+ printf("%-*s ", state_width, "UNCONN");
+ printf("%-6d %-6d ", rq, 0);
+ if (prot == 3) {
+ printf("%*s:", addr_width, "*");
+ } else {
+ char tb[16];
+ printf("%*s:", addr_width,
+ ll_proto_n2a(htons(prot), tb, sizeof(tb)));
+ }
+ if (iface == 0) {
+ printf("%-*s ", serv_width, "*");
+ } else {
+ printf("%-*s ", serv_width, xll_index_to_name(iface));
+ }
+ printf("%*s*%-*s",
+ addr_width, "", serv_width, "");
+
+ if (show_users) {
+ char ubuf[4096];
+ if (find_users(ino, ubuf, sizeof(ubuf)) > 0)
+ printf(" users:(%s)", ubuf);
+ }
+ if (show_details) {
+ printf(" ino=%u uid=%u sk=%llx", ino, uid, sk);
+ }
+ printf("\n");
+ }
+
+ return 0;
+}
+
+int netlink_show(struct filter *f)
+{
+ FILE *fp;
+ char buf[256];
+ int prot, pid;
+ unsigned groups;
+ int rq, wq, rc;
+ unsigned long long sk, cb;
+
+ if (!(f->states & (1<<SS_CLOSE)))
+ return 0;
+
+ if ((fp = fdopen(net_netlink_open(), "r")) == NULL)
+ return -1;
+ fgets(buf, sizeof(buf)-1, fp);
+
+ while (fgets(buf, sizeof(buf)-1, fp)) {
+ sscanf(buf, "%llx %d %d %x %d %d %llx %d",
+ &sk,
+ &prot, &pid, &groups, &rq, &wq, &cb, &rc);
+
+ if (f->f) {
+ struct tcpstat tst;
+ tst.local.family = AF_NETLINK;
+ tst.remote.family = AF_NETLINK;
+ tst.rport = -1;
+ tst.lport = pid;
+ tst.local.data[0] = prot;
+ tst.remote.data[0] = 0;
+ if (run_ssfilter(f->f, &tst) == 0)
+ continue;
+ }
+
+ if (netid_width)
+ printf("%-*s ", netid_width, "nl");
+ if (state_width)
+ printf("%-*s ", state_width, "UNCONN");
+ printf("%-6d %-6d ", rq, wq);
+ if (resolve_services && prot == 0)
+ printf("%*s:", addr_width, "rtnl");
+ else if (resolve_services && prot == 3)
+ printf("%*s:", addr_width, "fw");
+ else if (resolve_services && prot == 4)
+ printf("%*s:", addr_width, "tcpdiag");
+ else
+ printf("%*d:", addr_width, prot);
+ if (pid == -1) {
+ printf("%-*s ", serv_width, "*");
+ } else if (resolve_services) {
+ int done = 0;
+ if (!pid) {
+ done = 1;
+ printf("%-*s ", serv_width, "kernel");
+ } else if (pid > 0) {
+ char procname[64];
+ FILE *fp;
+ sprintf(procname, "%s/%d/stat",
+ getenv("PROC_ROOT") ? : "/proc", pid);
+ if ((fp = fopen(procname, "r")) != NULL) {
+ if (fscanf(fp, "%*d (%[^)])", procname) == 1) {
+ sprintf(procname+strlen(procname), "/%d", pid);
+ printf("%-*s ", serv_width, procname);
+ done = 1;
+ }
+ fclose(fp);
+ }
+ }
+ if (!done)
+ printf("%-*d ", serv_width, pid);
+ } else {
+ printf("%-*d ", serv_width, pid);
+ }
+ printf("%*s*%-*s",
+ addr_width, "", serv_width, "");
+
+ if (show_details) {
+ printf(" sk=%llx cb=%llx groups=0x%08x", sk, cb, groups);
+ }
+ printf("\n");
+ }
+
+ return 0;
+}
+
+struct snmpstat
+{
+ int tcp_estab;
+};
+
+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 = fdopen(net_snmp_open(), "r")) == 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 sockstat
+{
+ 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 sockstat *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);
+}
+
+int get_sockstat(struct sockstat *s)
+{
+ char buf[256];
+ FILE *fp;
+
+ memset(s, 0, sizeof(*s));
+
+ if ((fp = fdopen(net_sockstat_open(), "r")) == NULL)
+ return -1;
+ while(fgets(buf, sizeof(buf), fp) != NULL)
+ get_sockstat_line(buf, s);
+ fclose(fp);
+
+ if ((fp = fdopen(net_sockstat6_open(), "r")) == NULL)
+ return 0;
+ while(fgets(buf, sizeof(buf), fp) != NULL)
+ get_sockstat_line(buf, s);
+ fclose(fp);
+
+ return 0;
+}
+
+int print_summary(void)
+{
+ struct sockstat s;
+ struct snmpstat sn;
+
+ if (get_sockstat(&s) < 0)
+ perror("ss: get_sockstat");
+ if (get_snmp_int("Tcp:", "CurrEstab", &sn.tcp_estab) < 0)
+ perror("ss: get_snmpstat");
+
+ 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,
+ sn.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(void) __attribute__((noreturn));
+
+static void usage(void)
+{
+ fprintf(stderr,
+"Usage: ss [ OPTIONS ]\n"
+" ss [ OPTIONS ] [ FILTER ]\n"
+"where OPTIONS := { -h[elp] | -V[ersion] | -n[umeric] | -r[esolve] |\n"
+" -a[ll] -l[istening] -o[ptions] -e[xtended] -p[rocesses]\n"
+" -A QUERY } -s[ummary]\n"
+" -f[amily] { inet | inet6 | link | unix } }\n"
+" QUERY := {all|inet|tcp|udp|raw|unix|packet|netlink}[,QUERY]\n"
+" FILTER := [ state TCP-STATE ] [ EXPRESSION ]\n"
+);
+ exit(-1);
+}
+
+
+int scan_state(char *state)
+{
+ 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 (matches(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 (matches(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 (matches(state, sstate_namel[i]) == 0)
+ return (1<<i);
+ }
+ return 0;
+}
+
+
+int main(int argc, char *argv[])
+{
+ int do_default = 1;
+ int saw_states = 0;
+ int saw_query = 0;
+ int do_summary = 0;
+ char *dump_tcpdiag = NULL;
+ FILE *filter_fp = NULL;
+ int ch;
+
+ memset(¤t_filter, 0, sizeof(current_filter));
+
+ current_filter.states = default_filter.states;
+
+ while ((ch = getopt(argc, argv, "h?aletuwxnro460spfmiA:D:F:vV")) != 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++;
+ break;
+ case 't':
+ current_filter.dbs |= (1<<TCP_DB);
+ do_default = 0;
+ break;
+ case 'u':
+ current_filter.dbs |= (1<<UDP_DB);
+ do_default = 0;
+ break;
+ case 'w':
+ current_filter.dbs |= (1<<RAW_DB);
+ do_default = 0;
+ break;
+ case 'x':
+ current_filter.dbs |= UNIX_DBM;
+ do_default = 0;
+ break;
+ case 'a':
+ current_filter.states = SS_ALL;
+ break;
+ case 'l':
+ current_filter.states = (1<<SS_LISTEN);
+ break;
+ case '4':
+ preferred_family = AF_INET;
+ break;
+ case '6':
+ preferred_family = AF_INET6;
+ break;
+ case '0':
+ preferred_family = AF_PACKET;
+ break;
+ case 'f':
+ if (strcmp(optarg, "inet") == 0)
+ preferred_family = AF_INET;
+ else if (strcmp(optarg, "inet6") == 0)
+ preferred_family = AF_INET6;
+ else if (strcmp(optarg, "link") == 0)
+ preferred_family = AF_PACKET;
+ else if (strcmp(optarg, "unix") == 0)
+ preferred_family = AF_UNIX;
+ else if (strcmp(optarg, "netlink") == 0)
+ preferred_family = AF_NETLINK;
+ else if (strcmp(optarg, "help") == 0)
+ usage();
+ else {
+ fprintf(stderr, "ss: \"%s\" is invalid family\n", optarg);
+ usage();
+ }
+ break;
+ case 'A':
+ {
+ char *p, *p1;
+ if (!saw_query) {
+ current_filter.dbs = 0;
+ saw_query = 1;
+ do_default = 0;
+ }
+ p = p1 = optarg;
+ do {
+ if ((p1 = strchr(p, ',')) != NULL)
+ *p1 = 0;
+ if (strcmp(p, "all") == 0) {
+ current_filter.dbs = ALL_DB;
+ } else if (strcmp(p, "inet") == 0) {
+ current_filter.dbs |= (1<<TCP_DB)|(1<<UDP_DB)|(1<<RAW_DB);
+ } else if (strcmp(p, "udp") == 0) {
+ current_filter.dbs |= (1<<UDP_DB);
+ } else if (strcmp(p, "tcp") == 0) {
+ current_filter.dbs |= (1<<TCP_DB);
+ } else if (strcmp(p, "raw") == 0) {
+ current_filter.dbs |= (1<<RAW_DB);
+ } else if (strcmp(p, "unix") == 0) {
+ current_filter.dbs |= UNIX_DBM;
+ } else if (matches(p, "unix_stream") == 0 ||
+ strcmp(p, "u_str") == 0) {
+ current_filter.dbs |= (1<<UNIX_ST_DB);
+ } else if (matches(p, "unix_dgram") == 0 ||
+ strcmp(p, "u_dgr") == 0) {
+ current_filter.dbs |= (1<<UNIX_DG_DB);
+ } else if (strcmp(p, "packet") == 0) {
+ current_filter.dbs |= PACKET_DBM;
+ } else if (strcmp(p, "packet_raw") == 0 ||
+ strcmp(p, "p_raw") == 0) {
+ current_filter.dbs |= (1<<PACKET_R_DB);
+ } else if (strcmp(p, "packet_dgram") == 0 ||
+ strcmp(p, "p_dgr") == 0) {
+ current_filter.dbs |= (1<<PACKET_DG_DB);
+ } else if (strcmp(p, "netlink") == 0) {
+ current_filter.dbs |= (1<<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 'h':
+ case '?':
+ default:
+ usage();
+ }
+ }
+
+ argc -= optind;
+ argv += optind;
+
+ get_slabstat(&slabstat);
+
+ if (do_summary) {
+ print_summary();
+ if (do_default && argc == 0)
+ exit(0);
+ }
+
+ if (do_default)
+ current_filter.dbs = default_filter.dbs;
+
+ if (preferred_family == AF_UNSPEC) {
+ if (!(current_filter.dbs&~UNIX_DBM))
+ preferred_family = AF_UNIX;
+ else if (!(current_filter.dbs&~PACKET_DBM))
+ preferred_family = AF_PACKET;
+ else if (!(current_filter.dbs&~(1<<NETLINK_DB)))
+ preferred_family = AF_NETLINK;
+ }
+
+ if (preferred_family != AF_UNSPEC) {
+ int mask2;
+ if (preferred_family == AF_INET ||
+ preferred_family == AF_INET6) {
+ mask2= (1<<TCP_DB);
+ if (!do_default)
+ mask2 = (1<<UDP_DB)|(1<<RAW_DB);
+ } else if (preferred_family == AF_PACKET) {
+ mask2 = PACKET_DBM;
+ } else if (preferred_family == AF_UNIX) {
+ mask2 = UNIX_DBM;
+ } else if (preferred_family == AF_NETLINK) {
+ mask2 = (1<<NETLINK_DB);
+ } else {
+ mask2 = 0;
+ }
+
+ if (do_default)
+ current_filter.dbs = mask2;
+ else
+ current_filter.dbs &= mask2;
+ current_filter.families = (1<<preferred_family);
+ } else {
+ if (!do_default)
+ current_filter.families = ~0;
+ else
+ current_filter.families = default_filter.families;
+ }
+ 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 (resolve_services && resolve_hosts &&
+ (current_filter.dbs&(UNIX_DBM|(1<<TCP_DB)|(1<<UDP_DB))))
+ init_service_resolver();
+
+ /* Now parse filter... */
+ if (argc == 0 && filter_fp) {
+ if (ssfilter_parse(¤t_filter.f, 0, NULL, filter_fp))
+ usage();
+ }
+
+ while (argc > 0) {
+ if (strcmp(*argv, "state") == 0) {
+ NEXT_ARG();
+ if (!saw_states)
+ current_filter.states = 0;
+ current_filter.states |= scan_state(*argv);
+ saw_states = 1;
+ } else if (strcmp(*argv, "exclude") == 0 ||
+ strcmp(*argv, "excl") == 0) {
+ NEXT_ARG();
+ if (!saw_states)
+ current_filter.states = SS_ALL;
+ current_filter.states &= ~scan_state(*argv);
+ saw_states = 1;
+ } else {
+ if (ssfilter_parse(¤t_filter.f, argc, argv, filter_fp))
+ usage();
+ break;
+ }
+ argc--; argv++;
+ }
+
+ 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);
+ }
+ }
+ tcp_show_netlink(¤t_filter, dump_fp);
+ fflush(dump_fp);
+ exit(0);
+ }
+
+ 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;
+
+ screen_width = 80;
+ 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;
+ addrp_width -= netid_width+1;
+ addrp_width -= state_width+1;
+ addrp_width -= 14;
+
+ if (addrp_width&1) {
+ if (netid_width)
+ netid_width++;
+ else if (state_width)
+ state_width++;
+ }
+
+ 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 (netid_width)
+ printf("%-*s ", netid_width, "Netid");
+ if (state_width)
+ printf("%-*s ", state_width, "State");
+ printf("%-6s %-6s ", "Recv-Q", "Send-Q");
+
+ printf("%*s:%-*s %*s:%-*s\n",
+ addr_width, "Local Address", serv_width, "Port",
+ addr_width, "Peer Address", serv_width, "Port");
+
+//printf("%08x %08x %08x\n", current_filter.dbs, current_filter.states, current_filter.families);
+ fflush(stdout);
+
+ 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);
+ return 0;
+}
projects / mirror_iproute2.git / blobdiff