mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-24 11:29:10 +00:00
ae94787d6d
actually works. I have no idea why this wasn't finished and happened to try to use it.
627 lines
14 KiB
C
627 lines
14 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/tcp.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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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_l; /* Show listening sockets */
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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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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 sock {
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void *socket;
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void *pcb;
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int vflag;
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int family;
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int proto;
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const char *protoname;
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struct sockaddr_storage laddr;
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struct sockaddr_storage 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 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 *sa, 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(sa, sizeof *sa);
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switch (af) {
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case AF_INET:
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sin4 = (struct sockaddr_in *)sa;
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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 = (struct sockaddr_in6 *)sa;
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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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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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gather_inet(int proto)
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{
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struct xinpgen *xig, *exig;
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struct xinpcb *xip;
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struct xtcpcb *xtp;
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struct inpcb *inp;
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struct xsocket *so;
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struct sock *sock;
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const char *varname, *protoname;
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size_t len, bufsize;
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void *buf;
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int hash, retry, vflag;
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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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switch (proto) {
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case IPPROTO_TCP:
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varname = "net.inet.tcp.pcblist";
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protoname = "tcp";
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break;
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case IPPROTO_UDP:
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varname = "net.inet.udp.pcblist";
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protoname = "udp";
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break;
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default:
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abort();
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}
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buf = NULL;
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bufsize = 8192;
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retry = 5;
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do {
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for (;;) {
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if ((buf = realloc(buf, bufsize)) == NULL)
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err(1, "realloc()");
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len = bufsize;
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if (sysctlbyname(varname, buf, &len, NULL, 0) == 0)
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break;
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if (errno != ENOMEM)
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err(1, "sysctlbyname()");
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bufsize *= 2;
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}
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xig = (struct xinpgen *)buf;
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exig = (struct xinpgen *)(void *)
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((char *)buf + len - sizeof *exig);
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if (xig->xig_len != sizeof *xig ||
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exig->xig_len != sizeof *exig)
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errx(1, "struct xinpgen size mismatch");
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} while (xig->xig_gen != exig->xig_gen && retry--);
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if (xig->xig_gen != exig->xig_gen && opt_v)
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warnx("warning: data may be inconsistent");
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for (;;) {
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xig = (struct xinpgen *)(void *)((char *)xig + xig->xig_len);
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if (xig >= exig)
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break;
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switch (proto) {
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case IPPROTO_TCP:
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xtp = (struct xtcpcb *)xig;
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if (xtp->xt_len != sizeof *xtp) {
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warnx("struct xtcpcb size mismatch");
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goto out;
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}
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inp = &xtp->xt_inp;
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so = &xtp->xt_socket;
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break;
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case IPPROTO_UDP:
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xip = (struct xinpcb *)xig;
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if (xip->xi_len != sizeof *xip) {
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warnx("struct xinpcb size mismatch");
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goto out;
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}
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inp = &xip->xi_inp;
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so = &xip->xi_socket;
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break;
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default:
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abort();
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}
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if ((inp->inp_vflag & vflag) == 0)
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continue;
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if (inp->inp_vflag & INP_IPV4) {
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if ((inp->inp_fport == 0 && !opt_l) ||
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(inp->inp_fport != 0 && !opt_c))
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continue;
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} else if (inp->inp_vflag & INP_IPV6) {
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if ((inp->in6p_fport == 0 && !opt_l) ||
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(inp->in6p_fport != 0 && !opt_c))
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continue;
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} else {
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if (opt_v)
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warnx("invalid vflag 0x%x", inp->inp_vflag);
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free(sock);
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continue;
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}
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if ((sock = calloc(1, sizeof *sock)) == NULL)
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err(1, "malloc()");
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sock->socket = so->xso_so;
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sock->proto = proto;
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if (inp->inp_vflag & INP_IPV4) {
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sock->family = AF_INET;
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sockaddr(&sock->laddr, sock->family,
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&inp->inp_laddr, inp->inp_lport);
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sockaddr(&sock->faddr, sock->family,
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&inp->inp_faddr, inp->inp_fport);
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} else if (inp->inp_vflag & INP_IPV6) {
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sock->family = AF_INET6;
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sockaddr(&sock->laddr, sock->family,
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&inp->in6p_laddr, inp->in6p_lport);
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sockaddr(&sock->faddr, sock->family,
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&inp->in6p_faddr, inp->in6p_fport);
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}
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sock->vflag = inp->inp_vflag;
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sock->protoname = protoname;
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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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}
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out:
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free(buf);
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}
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static void
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gather_unix(int proto)
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{
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struct xunpgen *xug, *exug;
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struct xunpcb *xup;
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struct sock *sock;
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const char *varname, *protoname;
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size_t len, bufsize;
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void *buf;
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int hash, retry;
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switch (proto) {
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case SOCK_STREAM:
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varname = "net.local.stream.pcblist";
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protoname = "stream";
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break;
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case SOCK_DGRAM:
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varname = "net.local.dgram.pcblist";
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protoname = "dgram";
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break;
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default:
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abort();
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}
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buf = NULL;
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bufsize = 8192;
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retry = 5;
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do {
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for (;;) {
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if ((buf = realloc(buf, bufsize)) == NULL)
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err(1, "realloc()");
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len = bufsize;
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if (sysctlbyname(varname, buf, &len, NULL, 0) == 0)
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break;
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if (errno != ENOMEM)
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err(1, "sysctlbyname()");
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bufsize *= 2;
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}
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xug = (struct xunpgen *)buf;
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exug = (struct xunpgen *)(void *)
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((char *)buf + len - sizeof *exug);
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if (xug->xug_len != sizeof *xug ||
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exug->xug_len != sizeof *exug) {
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warnx("struct xinpgen size mismatch");
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goto out;
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}
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} while (xug->xug_gen != exug->xug_gen && retry--);
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if (xug->xug_gen != exug->xug_gen && opt_v)
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warnx("warning: data may be inconsistent");
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for (;;) {
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xug = (struct xunpgen *)(void *)((char *)xug + xug->xug_len);
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if (xug >= exug)
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break;
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xup = (struct xunpcb *)xug;
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if (xup->xu_len != sizeof *xup) {
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warnx("struct xunpcb size mismatch");
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goto out;
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}
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if ((xup->xu_unp.unp_conn == NULL && !opt_l) ||
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(xup->xu_unp.unp_conn != NULL && !opt_c))
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continue;
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if ((sock = calloc(1, sizeof *sock)) == NULL)
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err(1, "malloc()");
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sock->socket = xup->xu_socket.xso_so;
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sock->pcb = xup->xu_unpp;
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sock->proto = proto;
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sock->family = AF_UNIX;
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sock->protoname = protoname;
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if (xup->xu_unp.unp_addr != NULL)
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sock->laddr =
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*(struct sockaddr_storage *)(void *)&xup->xu_addr;
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else if (xup->xu_unp.unp_conn != NULL)
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*(void **)&sock->faddr = xup->xu_unp.unp_conn;
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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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}
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out:
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free(buf);
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}
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static void
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getfiles(void)
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{
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size_t len;
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if ((xfiles = malloc(len = sizeof *xfiles)) == NULL)
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err(1, "malloc()");
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while (sysctlbyname("kern.file", xfiles, &len, 0, 0) == -1) {
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if (errno != ENOMEM)
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err(1, "sysctlbyname()");
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len *= 2;
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if ((xfiles = realloc(xfiles, len)) == NULL)
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err(1, "realloc()");
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}
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if (len > 0 && xfiles->xf_size != sizeof *xfiles)
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errx(1, "struct xfile size mismatch");
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nxfiles = len / sizeof *xfiles;
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}
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static int
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printaddr(int af, struct sockaddr_storage *ss)
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{
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char addrstr[INET6_ADDRSTRLEN] = { '\0', '\0' };
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struct sockaddr_un *sun;
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void *addr;
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int off, port;
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switch (af) {
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case AF_INET:
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addr = &((struct sockaddr_in *)ss)->sin_addr;
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if (inet_lnaof(*(struct in_addr *)addr) == INADDR_ANY)
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addrstr[0] = '*';
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port = ntohs(((struct sockaddr_in *)ss)->sin_port);
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break;
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case AF_INET6:
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addr = &((struct sockaddr_in6 *)ss)->sin6_addr;
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if (IN6_IS_ADDR_UNSPECIFIED((struct in6_addr *)addr))
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addrstr[0] = '*';
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port = ntohs(((struct sockaddr_in6 *)ss)->sin6_port);
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break;
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case AF_UNIX:
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sun = (struct sockaddr_un *)ss;
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off = (int)((char *)&sun->sun_path - (char *)sun);
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return (xprintf("%.*s", sun->sun_len - off, sun->sun_path));
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}
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if (addrstr[0] == '\0')
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inet_ntop(af, addr, addrstr, sizeof addrstr);
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if (port == 0)
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return xprintf("%s:*", addrstr);
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else
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return xprintf("%s:%d", addrstr, port);
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}
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static const char *
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getprocname(pid_t pid)
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{
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static struct kinfo_proc proc;
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size_t len;
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int mib[4];
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mib[0] = CTL_KERN;
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mib[1] = KERN_PROC;
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mib[2] = KERN_PROC_PID;
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mib[3] = (int)pid;
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len = sizeof proc;
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if (sysctl(mib, 4, &proc, &len, NULL, 0) == -1) {
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warn("sysctl()");
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return ("??");
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}
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return (proc.ki_ocomm);
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}
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static int
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check_ports(struct sock *s)
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{
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int port;
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if (ports == NULL)
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return (1);
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if ((s->family != AF_INET) && (s->family != AF_INET6))
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return (1);
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if (s->family == AF_INET)
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port = ntohs(((struct sockaddr_in *)(&s->laddr))->sin_port);
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else
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port = ntohs(((struct sockaddr_in6 *)(&s->laddr))->sin6_port);
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if (CHK_PORT(port))
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return (1);
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if (s->family == AF_INET)
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port = ntohs(((struct sockaddr_in *)(&s->faddr))->sin_port);
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else
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port = ntohs(((struct sockaddr_in6 *)(&s->faddr))->sin6_port);
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if (CHK_PORT(port))
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return (1);
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return (0);
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}
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static void
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display(void)
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{
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struct passwd *pwd;
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struct xfile *xf;
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struct sock *s;
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void *p;
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int hash, n, pos;
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printf("%-8s %-10s %-5s %-2s %-6s %-21s %-21s\n",
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"USER", "COMMAND", "PID", "FD", "PROTO",
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"LOCAL ADDRESS", "FOREIGN ADDRESS");
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setpassent(1);
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for (xf = xfiles, n = 0; n < nxfiles; ++n, ++xf) {
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hash = (int)((uintptr_t)xf->xf_data % HASHSIZE);
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for (s = sockhash[hash]; s != NULL; s = s->next)
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if ((void *)s->socket == xf->xf_data)
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break;
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if (s == NULL)
|
|
continue;
|
|
if (!check_ports(s))
|
|
continue;
|
|
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);
|
|
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");
|
|
while (pos < 36)
|
|
pos += xprintf(" ");
|
|
switch (s->family) {
|
|
case AF_INET:
|
|
case AF_INET6:
|
|
pos += printaddr(s->family, &s->laddr);
|
|
while (pos < 58)
|
|
pos += xprintf(" ");
|
|
pos += printaddr(s->family, &s->faddr);
|
|
break;
|
|
case AF_UNIX:
|
|
/* server */
|
|
if (s->laddr.ss_len > 0) {
|
|
pos += printaddr(s->family, &s->laddr);
|
|
break;
|
|
}
|
|
/* client */
|
|
pos += xprintf("-> ");
|
|
p = *(void **)&s->faddr;
|
|
for (hash = 0; hash < HASHSIZE; ++hash) {
|
|
for (s = sockhash[hash]; s != NULL; s = s->next)
|
|
if (s->pcb == p)
|
|
break;
|
|
if (s != NULL)
|
|
break;
|
|
}
|
|
if (s == NULL || s->laddr.ss_len == 0)
|
|
pos += xprintf("??");
|
|
else
|
|
pos += printaddr(s->family, &s->laddr);
|
|
break;
|
|
default:
|
|
abort();
|
|
}
|
|
xprintf("\n");
|
|
}
|
|
}
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
fprintf(stderr, "Usage: sockstat [-46clu] [-p ports]\n");
|
|
exit(1);
|
|
}
|
|
|
|
int
|
|
main(int argc, char *argv[])
|
|
{
|
|
int o;
|
|
|
|
while ((o = getopt(argc, argv, "46clp:uv")) != -1)
|
|
switch (o) {
|
|
case '4':
|
|
opt_4 = 1;
|
|
break;
|
|
case '6':
|
|
opt_6 = 1;
|
|
break;
|
|
case 'c':
|
|
opt_c = 1;
|
|
break;
|
|
case 'l':
|
|
opt_l = 1;
|
|
break;
|
|
case 'p':
|
|
parse_ports(optarg);
|
|
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 && !opt_u)
|
|
opt_4 = opt_6 = opt_u = 1;
|
|
if (!opt_c && !opt_l)
|
|
opt_c = opt_l = 1;
|
|
|
|
if (opt_4 || opt_6) {
|
|
gather_inet(IPPROTO_TCP);
|
|
gather_inet(IPPROTO_UDP);
|
|
}
|
|
if (opt_u) {
|
|
gather_unix(SOCK_STREAM);
|
|
gather_unix(SOCK_DGRAM);
|
|
}
|
|
getfiles();
|
|
display();
|
|
|
|
exit(0);
|
|
}
|