1165 lines
28 KiB
C
1165 lines
28 KiB
C
/*-
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* Copyright (c) 2002 Dag-Erling Coïdan Smørgrav
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer
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* in this position and unchanged.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/socket.h>
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#include <sys/socketvar.h>
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#include <sys/sysctl.h>
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#include <sys/file.h>
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#include <sys/user.h>
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#include <sys/un.h>
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#include <sys/unpcb.h>
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#include <net/route.h>
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#include <netinet/in.h>
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#include <netinet/in_pcb.h>
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#include <netinet/sctp.h>
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#include <netinet/tcp.h>
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#define TCPSTATES /* load state names */
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#include <netinet/tcp_fsm.h>
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#include <netinet/tcp_seq.h>
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#include <netinet/tcp_var.h>
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#include <arpa/inet.h>
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#include <ctype.h>
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#include <err.h>
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#include <errno.h>
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#include <netdb.h>
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#include <pwd.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#define sstosin(ss) ((struct sockaddr_in *)(ss))
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#define sstosin6(ss) ((struct sockaddr_in6 *)(ss))
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#define sstosun(ss) ((struct sockaddr_un *)(ss))
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#define sstosa(ss) ((struct sockaddr *)(ss))
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static int opt_4; /* Show IPv4 sockets */
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static int opt_6; /* Show IPv6 sockets */
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static int opt_c; /* Show connected sockets */
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static int opt_j; /* Show specified jail */
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static int opt_L; /* Don't show IPv4 or IPv6 loopback sockets */
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static int opt_l; /* Show listening sockets */
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static int opt_s; /* Show protocol state if applicable */
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static int opt_u; /* Show Unix domain sockets */
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static int opt_v; /* Verbose mode */
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/*
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* Default protocols to use if no -P was defined.
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*/
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static const char *default_protos[] = {"sctp", "tcp", "udp", "divert" };
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static size_t default_numprotos = nitems(default_protos);
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static int *protos; /* protocols to use */
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static size_t numprotos; /* allocated size of protos[] */
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static int *ports;
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#define INT_BIT (sizeof(int)*CHAR_BIT)
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#define SET_PORT(p) do { ports[p / INT_BIT] |= 1 << (p % INT_BIT); } while (0)
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#define CHK_PORT(p) (ports[p / INT_BIT] & (1 << (p % INT_BIT)))
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struct addr {
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struct sockaddr_storage address;
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struct addr *next;
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};
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struct sock {
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void *socket;
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void *pcb;
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int shown;
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int vflag;
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int family;
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int proto;
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int state;
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const char *protoname;
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struct addr *laddr;
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struct addr *faddr;
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struct sock *next;
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};
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#define HASHSIZE 1009
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static struct sock *sockhash[HASHSIZE];
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static struct xfile *xfiles;
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static int nxfiles;
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static int
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xprintf(const char *fmt, ...)
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{
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va_list ap;
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int len;
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va_start(ap, fmt);
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len = vprintf(fmt, ap);
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va_end(ap);
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if (len < 0)
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err(1, "printf()");
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return (len);
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}
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static int
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get_proto_type(const char *proto)
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{
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struct protoent *pent;
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if (strlen(proto) == 0)
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return (0);
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pent = getprotobyname(proto);
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if (pent == NULL) {
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warn("getprotobyname");
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return (-1);
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}
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return (pent->p_proto);
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}
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static void
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init_protos(int num)
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{
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int proto_count = 0;
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if (num > 0) {
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proto_count = num;
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} else {
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/* Find the maximum number of possible protocols. */
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while (getprotoent() != NULL)
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proto_count++;
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endprotoent();
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}
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if ((protos = malloc(sizeof(int) * proto_count)) == NULL)
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err(1, "malloc");
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numprotos = proto_count;
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}
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static int
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parse_protos(char *protospec)
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{
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char *prot;
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int proto_type, proto_index;
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if (protospec == NULL)
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return (-1);
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init_protos(0);
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proto_index = 0;
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while ((prot = strsep(&protospec, ",")) != NULL) {
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if (strlen(prot) == 0)
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continue;
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proto_type = get_proto_type(prot);
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if (proto_type != -1)
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protos[proto_index++] = proto_type;
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}
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numprotos = proto_index;
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return (proto_index);
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}
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static void
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parse_ports(const char *portspec)
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{
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const char *p, *q;
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int port, end;
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if (ports == NULL)
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if ((ports = calloc(65536 / INT_BIT, sizeof(int))) == NULL)
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err(1, "calloc()");
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p = portspec;
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while (*p != '\0') {
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if (!isdigit(*p))
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errx(1, "syntax error in port range");
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for (q = p; *q != '\0' && isdigit(*q); ++q)
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/* nothing */ ;
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for (port = 0; p < q; ++p)
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port = port * 10 + digittoint(*p);
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if (port < 0 || port > 65535)
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errx(1, "invalid port number");
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SET_PORT(port);
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switch (*p) {
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case '-':
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++p;
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break;
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case ',':
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++p;
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/* fall through */
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case '\0':
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default:
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continue;
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}
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for (q = p; *q != '\0' && isdigit(*q); ++q)
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/* nothing */ ;
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for (end = 0; p < q; ++p)
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end = end * 10 + digittoint(*p);
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if (end < port || end > 65535)
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errx(1, "invalid port number");
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while (port++ < end)
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SET_PORT(port);
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if (*p == ',')
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++p;
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}
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}
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static void
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sockaddr(struct sockaddr_storage *ss, int af, void *addr, int port)
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{
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struct sockaddr_in *sin4;
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struct sockaddr_in6 *sin6;
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bzero(ss, sizeof(*ss));
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switch (af) {
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case AF_INET:
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sin4 = sstosin(ss);
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sin4->sin_len = sizeof(*sin4);
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sin4->sin_family = af;
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sin4->sin_port = port;
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sin4->sin_addr = *(struct in_addr *)addr;
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break;
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case AF_INET6:
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sin6 = sstosin6(ss);
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sin6->sin6_len = sizeof(*sin6);
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sin6->sin6_family = af;
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sin6->sin6_port = port;
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sin6->sin6_addr = *(struct in6_addr *)addr;
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#define s6_addr16 __u6_addr.__u6_addr16
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if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
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sin6->sin6_scope_id =
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ntohs(sin6->sin6_addr.s6_addr16[1]);
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sin6->sin6_addr.s6_addr16[1] = 0;
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}
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break;
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default:
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abort();
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}
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}
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static void
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free_socket(struct sock *sock)
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{
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struct addr *cur, *next;
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cur = sock->laddr;
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while (cur != NULL) {
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next = cur->next;
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free(cur);
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cur = next;
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}
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cur = sock->faddr;
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while (cur != NULL) {
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next = cur->next;
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free(cur);
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cur = next;
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}
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free(sock);
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}
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static void
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gather_sctp(void)
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{
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struct sock *sock;
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struct addr *laddr, *prev_laddr, *faddr, *prev_faddr;
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struct xsctp_inpcb *xinpcb;
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struct xsctp_tcb *xstcb;
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struct xsctp_raddr *xraddr;
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struct xsctp_laddr *xladdr;
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const char *varname;
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size_t len, offset;
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char *buf;
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int hash, vflag;
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int no_stcb, local_all_loopback, foreign_all_loopback;
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vflag = 0;
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if (opt_4)
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vflag |= INP_IPV4;
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if (opt_6)
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vflag |= INP_IPV6;
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varname = "net.inet.sctp.assoclist";
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if (sysctlbyname(varname, 0, &len, 0, 0) < 0) {
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if (errno != ENOENT)
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err(1, "sysctlbyname()");
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return;
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}
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if ((buf = (char *)malloc(len)) == NULL) {
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err(1, "malloc()");
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return;
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}
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if (sysctlbyname(varname, buf, &len, 0, 0) < 0) {
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err(1, "sysctlbyname()");
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free(buf);
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return;
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}
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xinpcb = (struct xsctp_inpcb *)(void *)buf;
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offset = sizeof(struct xsctp_inpcb);
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while ((offset < len) && (xinpcb->last == 0)) {
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if ((sock = calloc(1, sizeof *sock)) == NULL)
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err(1, "malloc()");
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sock->socket = xinpcb->socket;
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sock->proto = IPPROTO_SCTP;
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sock->protoname = "sctp";
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if (xinpcb->flags & SCTP_PCB_FLAGS_BOUND_V6) {
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sock->family = AF_INET6;
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sock->vflag = INP_IPV6;
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} else {
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sock->family = AF_INET;
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sock->vflag = INP_IPV4;
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}
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prev_laddr = NULL;
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local_all_loopback = 1;
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while (offset < len) {
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xladdr = (struct xsctp_laddr *)(void *)(buf + offset);
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offset += sizeof(struct xsctp_laddr);
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if (xladdr->last == 1)
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break;
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if ((laddr = calloc(1, sizeof(struct addr))) == NULL)
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err(1, "malloc()");
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switch (xladdr->address.sa.sa_family) {
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case AF_INET:
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#define __IN_IS_ADDR_LOOPBACK(pina) \
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((ntohl((pina)->s_addr) >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET)
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if (!__IN_IS_ADDR_LOOPBACK(&xladdr->address.sin.sin_addr))
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local_all_loopback = 0;
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#undef __IN_IS_ADDR_LOOPBACK
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sockaddr(&laddr->address,
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AF_INET,
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&xladdr->address.sin.sin_addr,
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htons(xinpcb->local_port));
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break;
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case AF_INET6:
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if (!IN6_IS_ADDR_LOOPBACK(&xladdr->address.sin6.sin6_addr))
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local_all_loopback = 0;
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sockaddr(&laddr->address,
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AF_INET6,
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&xladdr->address.sin6.sin6_addr,
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htons(xinpcb->local_port));
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break;
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default:
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errx(1, "adress family %d not supported",
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xladdr->address.sa.sa_family);
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}
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laddr->next = NULL;
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if (prev_laddr == NULL)
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sock->laddr = laddr;
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else
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prev_laddr->next = laddr;
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prev_laddr = laddr;
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}
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if (sock->laddr == NULL) {
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if ((sock->laddr = calloc(1, sizeof(struct addr))) == NULL)
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err(1, "malloc()");
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sock->laddr->address.ss_family = sock->family;
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if (sock->family == AF_INET)
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sock->laddr->address.ss_len = sizeof(struct sockaddr_in);
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else
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sock->laddr->address.ss_len = sizeof(struct sockaddr_in);
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local_all_loopback = 0;
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}
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if ((sock->faddr = calloc(1, sizeof(struct addr))) == NULL)
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err(1, "malloc()");
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sock->faddr->address.ss_family = sock->family;
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if (sock->family == AF_INET)
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sock->faddr->address.ss_len = sizeof(struct sockaddr_in);
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else
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sock->faddr->address.ss_len = sizeof(struct sockaddr_in);
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no_stcb = 1;
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while (offset < len) {
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xstcb = (struct xsctp_tcb *)(void *)(buf + offset);
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offset += sizeof(struct xsctp_tcb);
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if (no_stcb) {
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if (opt_l &&
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(!opt_L || !local_all_loopback) &&
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((xinpcb->flags & SCTP_PCB_FLAGS_UDPTYPE) ||
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(xstcb->last == 1))) {
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hash = (int)((uintptr_t)sock->socket % HASHSIZE);
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sock->next = sockhash[hash];
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sockhash[hash] = sock;
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} else {
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free_socket(sock);
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}
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}
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if (xstcb->last == 1)
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break;
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no_stcb = 0;
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if (opt_c) {
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if ((sock = calloc(1, sizeof *sock)) == NULL)
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err(1, "malloc()");
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sock->socket = xinpcb->socket;
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sock->proto = IPPROTO_SCTP;
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sock->protoname = "sctp";
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if (xinpcb->flags & SCTP_PCB_FLAGS_BOUND_V6) {
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sock->family = AF_INET6;
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sock->vflag = INP_IPV6;
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} else {
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sock->family = AF_INET;
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sock->vflag = INP_IPV4;
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}
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}
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prev_laddr = NULL;
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local_all_loopback = 1;
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while (offset < len) {
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xladdr = (struct xsctp_laddr *)(void *)(buf + offset);
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offset += sizeof(struct xsctp_laddr);
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if (xladdr->last == 1)
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break;
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if (!opt_c)
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continue;
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if ((laddr = calloc(1, sizeof(struct addr))) == NULL)
|
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err(1, "malloc()");
|
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switch (xladdr->address.sa.sa_family) {
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case AF_INET:
|
|
#define __IN_IS_ADDR_LOOPBACK(pina) \
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((ntohl((pina)->s_addr) >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET)
|
|
if (!__IN_IS_ADDR_LOOPBACK(&xladdr->address.sin.sin_addr))
|
|
local_all_loopback = 0;
|
|
#undef __IN_IS_ADDR_LOOPBACK
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sockaddr(&laddr->address,
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AF_INET,
|
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&xladdr->address.sin.sin_addr,
|
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htons(xstcb->local_port));
|
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break;
|
|
case AF_INET6:
|
|
if (!IN6_IS_ADDR_LOOPBACK(&xladdr->address.sin6.sin6_addr))
|
|
local_all_loopback = 0;
|
|
sockaddr(&laddr->address,
|
|
AF_INET6,
|
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&xladdr->address.sin6.sin6_addr,
|
|
htons(xstcb->local_port));
|
|
break;
|
|
default:
|
|
errx(1, "adress family %d not supported",
|
|
xladdr->address.sa.sa_family);
|
|
}
|
|
laddr->next = NULL;
|
|
if (prev_laddr == NULL)
|
|
sock->laddr = laddr;
|
|
else
|
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prev_laddr->next = laddr;
|
|
prev_laddr = laddr;
|
|
}
|
|
prev_faddr = NULL;
|
|
foreign_all_loopback = 1;
|
|
while (offset < len) {
|
|
xraddr = (struct xsctp_raddr *)(void *)(buf + offset);
|
|
offset += sizeof(struct xsctp_raddr);
|
|
if (xraddr->last == 1)
|
|
break;
|
|
if (!opt_c)
|
|
continue;
|
|
if ((faddr = calloc(1, sizeof(struct addr))) == NULL)
|
|
err(1, "malloc()");
|
|
switch (xraddr->address.sa.sa_family) {
|
|
case AF_INET:
|
|
#define __IN_IS_ADDR_LOOPBACK(pina) \
|
|
((ntohl((pina)->s_addr) >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET)
|
|
if (!__IN_IS_ADDR_LOOPBACK(&xraddr->address.sin.sin_addr))
|
|
foreign_all_loopback = 0;
|
|
#undef __IN_IS_ADDR_LOOPBACK
|
|
sockaddr(&faddr->address,
|
|
AF_INET,
|
|
&xraddr->address.sin.sin_addr,
|
|
htons(xstcb->remote_port));
|
|
break;
|
|
case AF_INET6:
|
|
if (!IN6_IS_ADDR_LOOPBACK(&xraddr->address.sin6.sin6_addr))
|
|
foreign_all_loopback = 0;
|
|
sockaddr(&faddr->address,
|
|
AF_INET6,
|
|
&xraddr->address.sin6.sin6_addr,
|
|
htons(xstcb->remote_port));
|
|
break;
|
|
default:
|
|
errx(1, "adress family %d not supported",
|
|
xraddr->address.sa.sa_family);
|
|
}
|
|
faddr->next = NULL;
|
|
if (prev_faddr == NULL)
|
|
sock->faddr = faddr;
|
|
else
|
|
prev_faddr->next = faddr;
|
|
prev_faddr = faddr;
|
|
}
|
|
if (opt_c) {
|
|
if (!opt_L || !(local_all_loopback || foreign_all_loopback)) {
|
|
hash = (int)((uintptr_t)sock->socket % HASHSIZE);
|
|
sock->next = sockhash[hash];
|
|
sockhash[hash] = sock;
|
|
} else {
|
|
free_socket(sock);
|
|
}
|
|
}
|
|
}
|
|
xinpcb = (struct xsctp_inpcb *)(void *)(buf + offset);
|
|
offset += sizeof(struct xsctp_inpcb);
|
|
}
|
|
free(buf);
|
|
}
|
|
|
|
static void
|
|
gather_inet(int proto)
|
|
{
|
|
struct xinpgen *xig, *exig;
|
|
struct xinpcb *xip;
|
|
struct xtcpcb *xtp;
|
|
struct inpcb *inp;
|
|
struct xsocket *so;
|
|
struct sock *sock;
|
|
struct addr *laddr, *faddr;
|
|
const char *varname, *protoname;
|
|
size_t len, bufsize;
|
|
void *buf;
|
|
int hash, retry, state, vflag;
|
|
|
|
state = vflag = 0;
|
|
if (opt_4)
|
|
vflag |= INP_IPV4;
|
|
if (opt_6)
|
|
vflag |= INP_IPV6;
|
|
|
|
switch (proto) {
|
|
case IPPROTO_TCP:
|
|
varname = "net.inet.tcp.pcblist";
|
|
protoname = "tcp";
|
|
break;
|
|
case IPPROTO_UDP:
|
|
varname = "net.inet.udp.pcblist";
|
|
protoname = "udp";
|
|
break;
|
|
case IPPROTO_DIVERT:
|
|
varname = "net.inet.divert.pcblist";
|
|
protoname = "div";
|
|
break;
|
|
default:
|
|
errx(1, "protocol %d not supported", proto);
|
|
}
|
|
|
|
buf = NULL;
|
|
bufsize = 8192;
|
|
retry = 5;
|
|
do {
|
|
for (;;) {
|
|
if ((buf = realloc(buf, bufsize)) == NULL)
|
|
err(1, "realloc()");
|
|
len = bufsize;
|
|
if (sysctlbyname(varname, buf, &len, NULL, 0) == 0)
|
|
break;
|
|
if (errno == ENOENT)
|
|
goto out;
|
|
if (errno != ENOMEM || len != bufsize)
|
|
err(1, "sysctlbyname()");
|
|
bufsize *= 2;
|
|
}
|
|
xig = (struct xinpgen *)buf;
|
|
exig = (struct xinpgen *)(void *)
|
|
((char *)buf + len - sizeof *exig);
|
|
if (xig->xig_len != sizeof *xig ||
|
|
exig->xig_len != sizeof *exig)
|
|
errx(1, "struct xinpgen size mismatch");
|
|
} while (xig->xig_gen != exig->xig_gen && retry--);
|
|
|
|
if (xig->xig_gen != exig->xig_gen && opt_v)
|
|
warnx("warning: data may be inconsistent");
|
|
|
|
for (;;) {
|
|
xig = (struct xinpgen *)(void *)((char *)xig + xig->xig_len);
|
|
if (xig >= exig)
|
|
break;
|
|
switch (proto) {
|
|
case IPPROTO_TCP:
|
|
xtp = (struct xtcpcb *)xig;
|
|
if (xtp->xt_len != sizeof(*xtp)) {
|
|
warnx("struct xtcpcb size mismatch");
|
|
goto out;
|
|
}
|
|
inp = &xtp->xt_inp;
|
|
so = &xtp->xt_socket;
|
|
protoname = xtp->xt_tp.t_flags & TF_TOE ? "toe" : "tcp";
|
|
state = xtp->xt_tp.t_state;
|
|
break;
|
|
case IPPROTO_UDP:
|
|
case IPPROTO_DIVERT:
|
|
xip = (struct xinpcb *)xig;
|
|
if (xip->xi_len != sizeof(*xip)) {
|
|
warnx("struct xinpcb size mismatch");
|
|
goto out;
|
|
}
|
|
inp = &xip->xi_inp;
|
|
so = &xip->xi_socket;
|
|
break;
|
|
default:
|
|
errx(1, "protocol %d not supported", proto);
|
|
}
|
|
if ((inp->inp_vflag & vflag) == 0)
|
|
continue;
|
|
if (inp->inp_vflag & INP_IPV4) {
|
|
if ((inp->inp_fport == 0 && !opt_l) ||
|
|
(inp->inp_fport != 0 && !opt_c))
|
|
continue;
|
|
#define __IN_IS_ADDR_LOOPBACK(pina) \
|
|
((ntohl((pina)->s_addr) >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET)
|
|
if (opt_L &&
|
|
(__IN_IS_ADDR_LOOPBACK(&inp->inp_faddr) ||
|
|
__IN_IS_ADDR_LOOPBACK(&inp->inp_laddr)))
|
|
continue;
|
|
#undef __IN_IS_ADDR_LOOPBACK
|
|
} else if (inp->inp_vflag & INP_IPV6) {
|
|
if ((inp->inp_fport == 0 && !opt_l) ||
|
|
(inp->inp_fport != 0 && !opt_c))
|
|
continue;
|
|
if (opt_L &&
|
|
(IN6_IS_ADDR_LOOPBACK(&inp->in6p_faddr) ||
|
|
IN6_IS_ADDR_LOOPBACK(&inp->in6p_laddr)))
|
|
continue;
|
|
} else {
|
|
if (opt_v)
|
|
warnx("invalid vflag 0x%x", inp->inp_vflag);
|
|
continue;
|
|
}
|
|
if ((sock = calloc(1, sizeof(*sock))) == NULL)
|
|
err(1, "malloc()");
|
|
if ((laddr = calloc(1, sizeof *laddr)) == NULL)
|
|
err(1, "malloc()");
|
|
if ((faddr = calloc(1, sizeof *faddr)) == NULL)
|
|
err(1, "malloc()");
|
|
sock->socket = so->xso_so;
|
|
sock->proto = proto;
|
|
if (inp->inp_vflag & INP_IPV4) {
|
|
sock->family = AF_INET;
|
|
sockaddr(&laddr->address, sock->family,
|
|
&inp->inp_laddr, inp->inp_lport);
|
|
sockaddr(&faddr->address, sock->family,
|
|
&inp->inp_faddr, inp->inp_fport);
|
|
} else if (inp->inp_vflag & INP_IPV6) {
|
|
sock->family = AF_INET6;
|
|
sockaddr(&laddr->address, sock->family,
|
|
&inp->in6p_laddr, inp->inp_lport);
|
|
sockaddr(&faddr->address, sock->family,
|
|
&inp->in6p_faddr, inp->inp_fport);
|
|
}
|
|
laddr->next = NULL;
|
|
faddr->next = NULL;
|
|
sock->laddr = laddr;
|
|
sock->faddr = faddr;
|
|
sock->vflag = inp->inp_vflag;
|
|
if (proto == IPPROTO_TCP)
|
|
sock->state = xtp->xt_tp.t_state;
|
|
sock->protoname = protoname;
|
|
hash = (int)((uintptr_t)sock->socket % HASHSIZE);
|
|
sock->next = sockhash[hash];
|
|
sockhash[hash] = sock;
|
|
}
|
|
out:
|
|
free(buf);
|
|
}
|
|
|
|
static void
|
|
gather_unix(int proto)
|
|
{
|
|
struct xunpgen *xug, *exug;
|
|
struct xunpcb *xup;
|
|
struct sock *sock;
|
|
struct addr *laddr, *faddr;
|
|
const char *varname, *protoname;
|
|
size_t len, bufsize;
|
|
void *buf;
|
|
int hash, retry;
|
|
|
|
switch (proto) {
|
|
case SOCK_STREAM:
|
|
varname = "net.local.stream.pcblist";
|
|
protoname = "stream";
|
|
break;
|
|
case SOCK_DGRAM:
|
|
varname = "net.local.dgram.pcblist";
|
|
protoname = "dgram";
|
|
break;
|
|
case SOCK_SEQPACKET:
|
|
varname = "net.local.seqpacket.pcblist";
|
|
protoname = "seqpac";
|
|
break;
|
|
default:
|
|
abort();
|
|
}
|
|
buf = NULL;
|
|
bufsize = 8192;
|
|
retry = 5;
|
|
do {
|
|
for (;;) {
|
|
if ((buf = realloc(buf, bufsize)) == NULL)
|
|
err(1, "realloc()");
|
|
len = bufsize;
|
|
if (sysctlbyname(varname, buf, &len, NULL, 0) == 0)
|
|
break;
|
|
if (errno != ENOMEM || len != bufsize)
|
|
err(1, "sysctlbyname()");
|
|
bufsize *= 2;
|
|
}
|
|
xug = (struct xunpgen *)buf;
|
|
exug = (struct xunpgen *)(void *)
|
|
((char *)buf + len - sizeof(*exug));
|
|
if (xug->xug_len != sizeof(*xug) ||
|
|
exug->xug_len != sizeof(*exug)) {
|
|
warnx("struct xinpgen size mismatch");
|
|
goto out;
|
|
}
|
|
} while (xug->xug_gen != exug->xug_gen && retry--);
|
|
|
|
if (xug->xug_gen != exug->xug_gen && opt_v)
|
|
warnx("warning: data may be inconsistent");
|
|
|
|
for (;;) {
|
|
xug = (struct xunpgen *)(void *)((char *)xug + xug->xug_len);
|
|
if (xug >= exug)
|
|
break;
|
|
xup = (struct xunpcb *)xug;
|
|
if (xup->xu_len != sizeof(*xup)) {
|
|
warnx("struct xunpcb size mismatch");
|
|
goto out;
|
|
}
|
|
if ((xup->xu_unp.unp_conn == NULL && !opt_l) ||
|
|
(xup->xu_unp.unp_conn != NULL && !opt_c))
|
|
continue;
|
|
if ((sock = calloc(1, sizeof(*sock))) == NULL)
|
|
err(1, "malloc()");
|
|
if ((laddr = calloc(1, sizeof *laddr)) == NULL)
|
|
err(1, "malloc()");
|
|
if ((faddr = calloc(1, sizeof *faddr)) == NULL)
|
|
err(1, "malloc()");
|
|
sock->socket = xup->xu_socket.xso_so;
|
|
sock->pcb = xup->xu_unpp;
|
|
sock->proto = proto;
|
|
sock->family = AF_UNIX;
|
|
sock->protoname = protoname;
|
|
if (xup->xu_unp.unp_addr != NULL)
|
|
laddr->address =
|
|
*(struct sockaddr_storage *)(void *)&xup->xu_addr;
|
|
else if (xup->xu_unp.unp_conn != NULL)
|
|
*(void **)&(faddr->address) = xup->xu_unp.unp_conn;
|
|
laddr->next = NULL;
|
|
faddr->next = NULL;
|
|
sock->laddr = laddr;
|
|
sock->faddr = faddr;
|
|
hash = (int)((uintptr_t)sock->socket % HASHSIZE);
|
|
sock->next = sockhash[hash];
|
|
sockhash[hash] = sock;
|
|
}
|
|
out:
|
|
free(buf);
|
|
}
|
|
|
|
static void
|
|
getfiles(void)
|
|
{
|
|
size_t len, olen;
|
|
|
|
olen = len = sizeof(*xfiles);
|
|
if ((xfiles = malloc(len)) == NULL)
|
|
err(1, "malloc()");
|
|
while (sysctlbyname("kern.file", xfiles, &len, 0, 0) == -1) {
|
|
if (errno != ENOMEM || len != olen)
|
|
err(1, "sysctlbyname()");
|
|
olen = len *= 2;
|
|
if ((xfiles = realloc(xfiles, len)) == NULL)
|
|
err(1, "realloc()");
|
|
}
|
|
if (len > 0 && xfiles->xf_size != sizeof(*xfiles))
|
|
errx(1, "struct xfile size mismatch");
|
|
nxfiles = len / sizeof(*xfiles);
|
|
}
|
|
|
|
static int
|
|
printaddr(struct sockaddr_storage *ss)
|
|
{
|
|
struct sockaddr_un *sun;
|
|
char addrstr[NI_MAXHOST] = { '\0', '\0' };
|
|
int error, off, port = 0;
|
|
|
|
switch (ss->ss_family) {
|
|
case AF_INET:
|
|
if (inet_lnaof(sstosin(ss)->sin_addr) == INADDR_ANY)
|
|
addrstr[0] = '*';
|
|
port = ntohs(sstosin(ss)->sin_port);
|
|
break;
|
|
case AF_INET6:
|
|
if (IN6_IS_ADDR_UNSPECIFIED(&sstosin6(ss)->sin6_addr))
|
|
addrstr[0] = '*';
|
|
port = ntohs(sstosin6(ss)->sin6_port);
|
|
break;
|
|
case AF_UNIX:
|
|
sun = sstosun(ss);
|
|
off = (int)((char *)&sun->sun_path - (char *)sun);
|
|
return (xprintf("%.*s", sun->sun_len - off, sun->sun_path));
|
|
}
|
|
if (addrstr[0] == '\0') {
|
|
error = getnameinfo(sstosa(ss), ss->ss_len, addrstr,
|
|
sizeof(addrstr), NULL, 0, NI_NUMERICHOST);
|
|
if (error)
|
|
errx(1, "getnameinfo()");
|
|
}
|
|
if (port == 0)
|
|
return xprintf("%s:*", addrstr);
|
|
else
|
|
return xprintf("%s:%d", addrstr, port);
|
|
}
|
|
|
|
static const char *
|
|
getprocname(pid_t pid)
|
|
{
|
|
static struct kinfo_proc proc;
|
|
size_t len;
|
|
int mib[4];
|
|
|
|
mib[0] = CTL_KERN;
|
|
mib[1] = KERN_PROC;
|
|
mib[2] = KERN_PROC_PID;
|
|
mib[3] = (int)pid;
|
|
len = sizeof(proc);
|
|
if (sysctl(mib, nitems(mib), &proc, &len, NULL, 0) == -1) {
|
|
/* Do not warn if the process exits before we get its name. */
|
|
if (errno != ESRCH)
|
|
warn("sysctl()");
|
|
return ("??");
|
|
}
|
|
return (proc.ki_comm);
|
|
}
|
|
|
|
static int
|
|
getprocjid(pid_t pid)
|
|
{
|
|
static struct kinfo_proc proc;
|
|
size_t len;
|
|
int mib[4];
|
|
|
|
mib[0] = CTL_KERN;
|
|
mib[1] = KERN_PROC;
|
|
mib[2] = KERN_PROC_PID;
|
|
mib[3] = (int)pid;
|
|
len = sizeof(proc);
|
|
if (sysctl(mib, nitems(mib), &proc, &len, NULL, 0) == -1) {
|
|
/* Do not warn if the process exits before we get its jid. */
|
|
if (errno != ESRCH)
|
|
warn("sysctl()");
|
|
return (-1);
|
|
}
|
|
return (proc.ki_jid);
|
|
}
|
|
|
|
static int
|
|
check_ports(struct sock *s)
|
|
{
|
|
int port;
|
|
struct addr *addr;
|
|
|
|
if (ports == NULL)
|
|
return (1);
|
|
if ((s->family != AF_INET) && (s->family != AF_INET6))
|
|
return (1);
|
|
for (addr = s->laddr; addr != NULL; addr = addr->next) {
|
|
if (s->family == AF_INET)
|
|
port = ntohs(sstosin(&addr->address)->sin_port);
|
|
else
|
|
port = ntohs(sstosin6(&addr->address)->sin6_port);
|
|
if (CHK_PORT(port))
|
|
return (1);
|
|
}
|
|
for (addr = s->faddr; addr != NULL; addr = addr->next) {
|
|
if (s->family == AF_INET)
|
|
port = ntohs(sstosin(&addr->address)->sin_port);
|
|
else
|
|
port = ntohs(sstosin6(&addr->address)->sin6_port);
|
|
if (CHK_PORT(port))
|
|
return (1);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
displaysock(struct sock *s, int pos)
|
|
{
|
|
void *p;
|
|
int hash;
|
|
struct addr *laddr, *faddr;
|
|
struct sock *s_tmp;
|
|
|
|
while (pos < 29)
|
|
pos += xprintf(" ");
|
|
pos += xprintf("%s", s->protoname);
|
|
if (s->vflag & INP_IPV4)
|
|
pos += xprintf("4 ");
|
|
if (s->vflag & INP_IPV6)
|
|
pos += xprintf("6 ");
|
|
laddr = s->laddr;
|
|
faddr = s->faddr;
|
|
while (laddr != NULL || faddr != NULL) {
|
|
while (pos < 36)
|
|
pos += xprintf(" ");
|
|
switch (s->family) {
|
|
case AF_INET:
|
|
case AF_INET6:
|
|
if (laddr != NULL) {
|
|
pos += printaddr(&laddr->address);
|
|
if (s->family == AF_INET6 && pos >= 58)
|
|
pos += xprintf(" ");
|
|
}
|
|
while (pos < 58)
|
|
pos += xprintf(" ");
|
|
if (faddr != NULL)
|
|
pos += printaddr(&faddr->address);
|
|
break;
|
|
case AF_UNIX:
|
|
if ((laddr == NULL) || (faddr == NULL))
|
|
errx(1, "laddr = %p or faddr = %p is NULL",
|
|
(void *)laddr, (void *)faddr);
|
|
/* server */
|
|
if (laddr->address.ss_len > 0) {
|
|
pos += printaddr(&laddr->address);
|
|
break;
|
|
}
|
|
/* client */
|
|
p = *(void **)&(faddr->address);
|
|
if (p == NULL) {
|
|
pos += xprintf("(not connected)");
|
|
break;
|
|
}
|
|
pos += xprintf("-> ");
|
|
for (hash = 0; hash < HASHSIZE; ++hash) {
|
|
for (s_tmp = sockhash[hash];
|
|
s_tmp != NULL;
|
|
s_tmp = s_tmp->next)
|
|
if (s_tmp->pcb == p)
|
|
break;
|
|
if (s_tmp != NULL)
|
|
break;
|
|
}
|
|
if (s_tmp == NULL ||
|
|
s_tmp->laddr == NULL ||
|
|
s_tmp->laddr->address.ss_len == 0)
|
|
pos += xprintf("??");
|
|
else
|
|
pos += printaddr(&s_tmp->laddr->address);
|
|
break;
|
|
default:
|
|
abort();
|
|
}
|
|
if (laddr != NULL)
|
|
laddr = laddr->next;
|
|
if (faddr != NULL)
|
|
faddr = faddr->next;
|
|
if ((laddr != NULL) || (faddr != NULL)) {
|
|
xprintf("\n");
|
|
pos = 0;
|
|
}
|
|
}
|
|
if (opt_s && s->proto == IPPROTO_TCP) {
|
|
while (pos < 80)
|
|
pos += xprintf(" ");
|
|
if (s->state >= 0 && s->state < TCP_NSTATES)
|
|
pos += xprintf("%s", tcpstates[s->state]);
|
|
else
|
|
pos += xprintf("?");
|
|
}
|
|
}
|
|
|
|
static void
|
|
display(void)
|
|
{
|
|
struct passwd *pwd;
|
|
struct xfile *xf;
|
|
struct sock *s;
|
|
int hash, n, pos;
|
|
|
|
printf("%-8s %-10s %-5s %-2s %-6s %-21s %-21s",
|
|
"USER", "COMMAND", "PID", "FD", "PROTO",
|
|
"LOCAL ADDRESS", "FOREIGN ADDRESS");
|
|
if (opt_s)
|
|
printf(" %-12s", "STATE");
|
|
printf("\n");
|
|
setpassent(1);
|
|
for (xf = xfiles, n = 0; n < nxfiles; ++n, ++xf) {
|
|
if (xf->xf_data == NULL)
|
|
continue;
|
|
if (opt_j >= 0 && opt_j != getprocjid(xf->xf_pid))
|
|
continue;
|
|
hash = (int)((uintptr_t)xf->xf_data % HASHSIZE);
|
|
for (s = sockhash[hash]; s != NULL; s = s->next) {
|
|
if ((void *)s->socket != xf->xf_data)
|
|
continue;
|
|
if (!check_ports(s))
|
|
continue;
|
|
s->shown = 1;
|
|
pos = 0;
|
|
if ((pwd = getpwuid(xf->xf_uid)) == NULL)
|
|
pos += xprintf("%lu ", (u_long)xf->xf_uid);
|
|
else
|
|
pos += xprintf("%s ", pwd->pw_name);
|
|
while (pos < 9)
|
|
pos += xprintf(" ");
|
|
pos += xprintf("%.10s", getprocname(xf->xf_pid));
|
|
while (pos < 20)
|
|
pos += xprintf(" ");
|
|
pos += xprintf("%lu ", (u_long)xf->xf_pid);
|
|
while (pos < 26)
|
|
pos += xprintf(" ");
|
|
pos += xprintf("%d ", xf->xf_fd);
|
|
displaysock(s, pos);
|
|
xprintf("\n");
|
|
}
|
|
}
|
|
if (opt_j >= 0)
|
|
return;
|
|
for (hash = 0; hash < HASHSIZE; hash++) {
|
|
for (s = sockhash[hash]; s != NULL; s = s->next) {
|
|
if (s->shown)
|
|
continue;
|
|
if (!check_ports(s))
|
|
continue;
|
|
pos = 0;
|
|
pos += xprintf("%-8s %-10s %-5s %-2s ",
|
|
"?", "?", "?", "?");
|
|
displaysock(s, pos);
|
|
xprintf("\n");
|
|
}
|
|
}
|
|
}
|
|
|
|
static int set_default_protos(void)
|
|
{
|
|
struct protoent *prot;
|
|
const char *pname;
|
|
size_t pindex;
|
|
|
|
init_protos(default_numprotos);
|
|
|
|
for (pindex = 0; pindex < default_numprotos; pindex++) {
|
|
pname = default_protos[pindex];
|
|
prot = getprotobyname(pname);
|
|
if (prot == NULL)
|
|
err(1, "getprotobyname: %s", pname);
|
|
protos[pindex] = prot->p_proto;
|
|
}
|
|
numprotos = pindex;
|
|
return (pindex);
|
|
}
|
|
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
fprintf(stderr,
|
|
"usage: sockstat [-46cLlsu] [-j jid] [-p ports] [-P protocols]\n");
|
|
exit(1);
|
|
}
|
|
|
|
int
|
|
main(int argc, char *argv[])
|
|
{
|
|
int protos_defined = -1;
|
|
int o, i;
|
|
|
|
opt_j = -1;
|
|
while ((o = getopt(argc, argv, "46cj:Llp:P:suv")) != -1)
|
|
switch (o) {
|
|
case '4':
|
|
opt_4 = 1;
|
|
break;
|
|
case '6':
|
|
opt_6 = 1;
|
|
break;
|
|
case 'c':
|
|
opt_c = 1;
|
|
break;
|
|
case 'j':
|
|
opt_j = atoi(optarg);
|
|
break;
|
|
case 'L':
|
|
opt_L = 1;
|
|
break;
|
|
case 'l':
|
|
opt_l = 1;
|
|
break;
|
|
case 'p':
|
|
parse_ports(optarg);
|
|
break;
|
|
case 'P':
|
|
protos_defined = parse_protos(optarg);
|
|
break;
|
|
case 's':
|
|
opt_s = 1;
|
|
break;
|
|
case 'u':
|
|
opt_u = 1;
|
|
break;
|
|
case 'v':
|
|
++opt_v;
|
|
break;
|
|
default:
|
|
usage();
|
|
}
|
|
|
|
argc -= optind;
|
|
argv += optind;
|
|
|
|
if (argc > 0)
|
|
usage();
|
|
|
|
if ((!opt_4 && !opt_6) && protos_defined != -1)
|
|
opt_4 = opt_6 = 1;
|
|
if (!opt_4 && !opt_6 && !opt_u)
|
|
opt_4 = opt_6 = opt_u = 1;
|
|
if ((opt_4 || opt_6) && protos_defined == -1)
|
|
protos_defined = set_default_protos();
|
|
if (!opt_c && !opt_l)
|
|
opt_c = opt_l = 1;
|
|
|
|
if (opt_4 || opt_6) {
|
|
for (i = 0; i < protos_defined; i++)
|
|
if (protos[i] == IPPROTO_SCTP)
|
|
gather_sctp();
|
|
else
|
|
gather_inet(protos[i]);
|
|
}
|
|
|
|
if (opt_u || (protos_defined == -1 && !opt_4 && !opt_6)) {
|
|
gather_unix(SOCK_STREAM);
|
|
gather_unix(SOCK_DGRAM);
|
|
gather_unix(SOCK_SEQPACKET);
|
|
}
|
|
getfiles();
|
|
display();
|
|
exit(0);
|
|
}
|