source: trunk/src/sh_port2proc.c@ 210

Last change on this file since 210 was 206, checked in by katerina, 16 years ago

Fix for ticket #133 (improve port checking and its reporting to prelude).
File size: 23.5 KB
RevLine 
[180]1/* SAMHAIN file system integrity testing */
2/* Copyright (C) 2008 Rainer Wichmann */
3/* */
4/* This program is free software; you can redistribute it */
5/* and/or modify */
6/* it under the terms of the GNU General Public License as */
7/* published by */
8/* the Free Software Foundation; either version 2 of the License, or */
9/* (at your option) any later version. */
10/* */
11/* This program is distributed in the hope that it will be useful, */
12/* but WITHOUT ANY WARRANTY; without even the implied warranty of */
13/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */
14/* GNU General Public License for more details. */
15/* */
16/* You should have received a copy of the GNU General Public License */
17/* along with this program; if not, write to the Free Software */
18/* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
19
20#include "config_xor.h"
21
22#include <stdio.h>
23#include <stdlib.h>
24#include <string.h>
25#include <sys/types.h>
26#include <unistd.h>
27
28#ifdef HAVE_DIRENT_H
29#include <dirent.h>
30#define NAMLEN(dirent) sl_strlen((dirent)->d_name)
31#else
32#define dirent direct
33#define NAMLEN(dirent) (dirent)->d_namlen
34#ifdef HAVE_SYS_NDIR_H
35#include <sys/ndir.h>
36#endif
37#ifdef HAVE_SYS_DIR_H
38#include <sys/dir.h>
39#endif
40#ifdef HAVE_NDIR_H
41#include <ndir.h>
42#endif
43#endif
44#define NEED_ADD_DIRENT
45
46#if defined(SH_USE_PORTCHECK) && (defined (SH_WITH_CLIENT) || defined (SH_STANDALONE))
47
[193]48/****************************************************************************
49 *
50 * >>> COMMON CODE <<<
51 *
52 ****************************************************************************/
53#if defined(__linux__) || defined(__FreeBSD__)
[180]54
55#include "samhain.h"
56#include "sh_error_min.h"
57#include "sh_utils.h"
58#include "sh_pthread.h"
59
60#define FIL__ _("sh_port2proc.c")
61
62struct sock_store {
63 unsigned long sock;
64 size_t pid;
65 char * path;
66 char * user;
67 struct sock_store * next;
68};
69
70/* /proc:
71 * linux: /proc/pid/exe
72 * freebsd: /proc/pid/file
73 * solaris10: /proc/pid/path/a.out
74 */
75static void get_user_and_path (struct sock_store * add)
76{
77 extern char * sh_unix_getUIDname (int level, uid_t uid, char * out, size_t len);
78
79 char path[128];
80 char * buf;
81 struct stat sbuf;
82 int len;
83 char * tmp;
84
85 sl_snprintf (path, sizeof(path), "/proc/%ld/exe", (unsigned long) add->pid);
86
87 if (0 == retry_lstat(FIL__, __LINE__, path, &sbuf) && S_ISLNK(sbuf.st_mode))
88 {
89 goto linkread;
90 }
91
92 sl_snprintf (path, sizeof(path), "/proc/%ld/file", (unsigned long) add->pid);
93
94 if (0 == retry_lstat(FIL__, __LINE__, path, &sbuf) && S_ISLNK(sbuf.st_mode))
95 {
96 goto linkread;
97 }
98
99 sl_snprintf (path, sizeof(path), "/proc/%ld/path/a.out", (unsigned long) add->pid);
100
101 if (0 == retry_lstat(FIL__, __LINE__, path, &sbuf) && S_ISLNK(sbuf.st_mode))
102 {
103 goto linkread;
104 }
105
106 return;
107
108 linkread:
109
110 buf = SH_ALLOC(PATH_MAX);
111 len = readlink(path, buf, PATH_MAX); /* flawfinder: ignore */
112 len = (len >= PATH_MAX) ? (PATH_MAX-1) : len;
113
114 if (len > 0)
115 {
116 buf[len] = '\0';
117 add->path = buf;
118 }
119 else
120 {
121 SH_FREE(buf);
122 }
123
124 add->user = SH_ALLOC(USER_MAX);
125 tmp = sh_unix_getUIDname (SH_ERR_ALL, sbuf.st_uid, add->user, USER_MAX);
126
127 if (!tmp)
128 sl_snprintf (add->user, USER_MAX, "%ld", (unsigned long) sbuf.st_uid);
129
130 return;
131}
132
[195]133#endif
134
135/****************************************************************************
136 *
137 * >>> LINUX CODE <<<
138 *
139 ****************************************************************************/
140
[180]141#if defined(__linux__)
[195]142
143static size_t sh_minpid = 0x0001;
144static size_t sh_maxpid = 0x8000;
145
146#ifndef HAVE_LSTAT
147#define lstat(x,y) stat(x,y)
148#endif /* HAVE_LSTAT */
149
150#if defined(S_IFLNK) && !defined(S_ISLNK)
151# define S_ISLNK(mode) (((mode) & S_IFMT) == S_IFLNK)
152#else
153# if !defined(S_ISLNK)
154# define S_ISLNK(mode) (0)
155# endif
156#endif
157
158#if defined(__linux__)
[180]159#define PROC_PID_MAX _("/proc/sys/kernel/pid_max")
160
161static int proc_max_pid (size_t * procpid)
162{
163 char * ret;
164 unsigned long pid;
165 FILE * fd;
166 char str[128];
167 char * ptr;
168
169 SL_ENTER(_("proc_max_pid"));
170
171 if (0 == access(PROC_PID_MAX, R_OK)) /* flawfinder: ignore */
172 {
173 if (NULL != (fd = fopen(PROC_PID_MAX, "r")))
174 {
175 str[0] = '\0';
176 ret = fgets(str, 128, fd);
177 if (ret && *str != '\0')
178 {
179 pid = strtoul(str, &ptr, 0);
180 if (*ptr == '\0' || *ptr == '\n')
181 {
182 fclose(fd);
183 *procpid = (size_t) pid;
184 SL_RETURN(0, _("proc_max_pid"));
185 }
186 }
187 fclose(fd);
188 }
189 }
190 SL_RETURN((-1), _("proc_max_pid"));
191}
192#else
193static int proc_max_pid(size_t * procpid)
194{
195 *procpid = sh_maxpid;
196 return 0;
197}
198#endif
199
200static struct sock_store * socklist = NULL;
201
202static void del_sock_all()
203{
204 struct sock_store * del = socklist;
205
206 while (del)
207 {
208 socklist = del->next;
209 if (del->path)
210 SH_FREE(del->path);
211 if (del->user)
212 SH_FREE(del->user);
213 SH_FREE(del);
214 del = socklist;
215 }
216 socklist = NULL;
217 return;
218}
219
220static void add_sock(unsigned long sock, size_t pid)
221{
222 struct sock_store * add = SH_ALLOC(sizeof(struct sock_store));
223
224 add->sock = sock;
225 add->pid = pid;
226 add->path = NULL;
227 add->user = NULL;
228 SH_MUTEX_LOCK(mutex_thread_nolog);
229 get_user_and_path(add);
230 SH_MUTEX_UNLOCK(mutex_thread_nolog);
231 add->next = socklist;
232 socklist = add;
233 return;
234}
235
236static void check_and_add_sock(char * fbuf, size_t pid)
237{
238 if (0 == strncmp(_("socket:["), fbuf, 8))
239 {
240 char * end;
241 unsigned long sock;
242 size_t len = strlen(fbuf);
243 if (fbuf[len-1] == ']')
244 fbuf[len-1] = '\0';
245 sock = strtoul(&fbuf[8], &end, 0);
246 if (*end == '\0' && fbuf[8] != '\0')
247 {
248 add_sock(sock, pid);
249 }
250 }
251}
252
253static void fetch_socks(size_t pid)
254{
255 char path[128];
256 DIR * dir;
257 sl_snprintf(path, sizeof(path), _("/proc/%lu/fd"), (unsigned long) pid);
258
259 dir = opendir(path);
260 if (dir)
261 {
262 struct dirent *entry;
263 while (NULL != (entry = readdir(dir)))
264 {
265 char fpath[384];
266 char fbuf[64];
267 int ret;
268 /* /proc/PID/fd/N-> socket:[15713] */
269 sl_snprintf(fpath, sizeof(fpath), _("%s/%s"), path, entry->d_name);
270 ret = readlink(fpath, fbuf, sizeof(fbuf)-1); /* flawfinder: ignore */
271 if (ret > 0)
272 {
273 fbuf[ret] = '\0';
274 check_and_add_sock(fbuf, pid);
275 }
276 }
277 closedir(dir);
278 }
279}
280
281int sh_port2proc_prepare()
282{
283 size_t i;
284
285 if (0 != proc_max_pid(&sh_maxpid))
286 {
287 SH_MUTEX_LOCK(mutex_thread_nolog);
288 sh_error_handle(SH_ERR_ALL, FIL__, __LINE__, 0, MSG_E_SUBGEN,
289 _("Failed to detect max_pid"),
290 _("sh_port2proc"));
291 SH_MUTEX_UNLOCK(mutex_thread_nolog);
292 SL_RETURN ((-1), _("sh_port2proc"));
293 }
294
295 /* Delete old socket list and re-create it
296 */
297 del_sock_all();
298
299 for (i = sh_minpid; i < sh_maxpid; ++i)
300 {
301 fetch_socks(i);
302 }
303
304 return 0;
305}
306
307#include <sys/socket.h>
308#include <netinet/in.h>
309#include <arpa/inet.h>
310
[193]311/* returns the command and fills the 'user' array
312 */
[206]313char * sh_port2proc_query(int proto, struct in_addr * saddr, int sport, unsigned long * pid,
[180]314 char * user, size_t userlen)
315{
316 FILE * fd;
317
318 if (proto == IPPROTO_TCP)
319 fd = fopen("/proc/net/tcp", "r");
320 else
321 fd = fopen("/proc/net/udp", "r");
322
[206]323 *pid = 0;
324
[180]325 if (fd)
326 {
327 int n, iface, port, inode;
328 char line[512];
329
330 while (NULL != fgets(line, sizeof(line), fd))
331 {
332
333 if (4 == sscanf(line,
334 "%d: %X:%X %*X:%*X %*X %*X:%*X %*X:%*X %*X %*d %*d %d %*s",
335 &n, &iface, &port, &inode))
336 {
337 struct in_addr haddr;
338 haddr.s_addr = (unsigned long)iface;
339
340 if (haddr.s_addr == saddr->s_addr && port == sport)
341 {
342 struct sock_store * new = socklist;
343
344 while (new)
345 {
346 if ((unsigned int)inode == new->sock)
347 {
348 fclose(fd);
[206]349 *pid = (unsigned long) new->pid;
[180]350 if (new->path)
351 {
352 if (new->user)
353 sl_strlcpy(user, new->user, userlen);
354 else
355 sl_strlcpy(user, "-", userlen);
356 return sh_util_strdup(new->path);
357 }
358 goto err_out;
359 }
360 new = new->next;
361 }
362 }
363 }
364 }
365 fclose(fd);
366 }
367 err_out:
[206]368 sl_strlcpy(user, "-", userlen);
[180]369 return sh_util_strdup("-");
370}
371
372
[193]373/****************************************************************************
374 *
375 * >>> FREEBSD CODE <<<
376 *
377 ****************************************************************************/
378
379#elif defined(__FreeBSD__)
380
381/* Uses code from sockstat.c. Error and memory handling modified.
382 * Only required functions from sockstat.c are included.
383 */
384
385/*-
386 * Copyright (c) 2002 Dag-Erling Co<EF>dan Sm<F8>rgrav
387 * All rights reserved.
388 *
389 * Redistribution and use in source and binary forms, with or without
390 * modification, are permitted provided that the following conditions
391 * are met:
392 * 1. Redistributions of source code must retain the above copyright
393 * notice, this list of conditions and the following disclaimer
394 * in this position and unchanged.
395 * 2. Redistributions in binary form must reproduce the above copyright
396 * notice, this list of conditions and the following disclaimer in the
397 * documentation and/or other materials provided with the distribution.
398 * 3. The name of the author may not be used to endorse or promote products
399 * derived from this software without specific prior written permission.
400 *
401 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
402 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
403 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
404 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
405 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
406 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
407 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
408 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
409 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
410 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
411 */
412#include <sys/cdefs.h>
413__FBSDID("$FreeBSD: src/usr.bin/sockstat/sockstat.c,v 1.13.2.1.4.1 2008/10/02 02:57:24 kensmith Exp $");
414
415#include <sys/param.h>
416#include <sys/socket.h>
417#include <sys/socketvar.h>
418#include <sys/sysctl.h>
419#include <sys/file.h>
420#include <sys/user.h>
421
422#include <sys/un.h>
423#include <sys/unpcb.h>
424
425#include <net/route.h>
426
427#include <netinet/in.h>
428#include <netinet/in_pcb.h>
429#include <netinet/tcp.h>
430#include <netinet/tcp_seq.h>
431#include <netinet/tcp_var.h>
432#include <arpa/inet.h>
433
434#include <ctype.h>
435#include <errno.h>
436#include <netdb.h>
437#include <stdio.h>
438#include <stdlib.h>
439
440#include <unistd.h>
441
442static int opt_4 = 1; /* Show IPv4 sockets */
443static int opt_6 = 0; /* Show IPv6 sockets */
444static int opt_c = 0; /* Show connected sockets */
445static int opt_l = 1; /* Show listening sockets */
446static int opt_v = 0; /* Verbose mode */
447
448struct sock {
449 void *socket;
450 void *pcb;
451 int vflag;
452 int family;
453 int proto;
454
455 struct sockaddr_storage laddr;
456 struct sockaddr_storage faddr;
457 struct sock *next;
458};
459
460#define HASHSIZE 1009
461static struct sock *sockhash[HASHSIZE];
462
463static struct xfile *xfiles;
464static int nxfiles;
465
466
467static void * xrealloc(void * buf, size_t len0, size_t len)
468{
469 if (len > 0)
470 {
[195]471 void * xbuf = SH_ALLOC(len);
472 if (buf)
473 {
474 if (len0 <= len)
475 memcpy(xbuf, buf, len0);
476 else
477 memset(xbuf, '\0', len);
478 SH_FREE(buf);
479 }
[193]480 return xbuf;
481 }
482 SH_FREE(buf);
483 return NULL;
484}
485
486/* Sets address and port in struct sockaddr_storage *sa
487 */
488static void
489sockaddr(struct sockaddr_storage *sa, int af, void *addr, int port)
490{
491 struct sockaddr_in *sin4;
492 struct sockaddr_in6 *sin6;
493
494 bzero(sa, sizeof *sa);
495 switch (af) {
496 case AF_INET:
497 sin4 = (struct sockaddr_in *)sa;
498 sin4->sin_len = sizeof *sin4;
499 sin4->sin_family = af;
500 sin4->sin_port = port;
501 sin4->sin_addr = *(struct in_addr *)addr;
502 break;
503 case AF_INET6:
504 sin6 = (struct sockaddr_in6 *)sa;
505 sin6->sin6_len = sizeof *sin6;
506 sin6->sin6_family = af;
507 sin6->sin6_port = port;
508 sin6->sin6_addr = *(struct in6_addr *)addr;
509 break;
510 default:
511 return;
512 }
513}
514
515/* Get socket information from the kernel.
516 */
517static void
518gather_inet(int proto)
519{
520 struct xinpgen *xig, *exig;
521 struct xinpcb *xip;
522 struct xtcpcb *xtp;
523 struct inpcb *inp;
524 struct xsocket *so;
525 struct sock *sock;
526 char varname[32];
527 size_t len, bufsize, bufsize0;
528 void *buf;
529 int hash, retry, vflag;
530
531 vflag = 0;
532 if (opt_4)
533 vflag |= INP_IPV4;
534 if (opt_6)
535 vflag |= INP_IPV6;
536
537 switch (proto) {
538 case IPPROTO_TCP:
539 sl_strlcpy(varname, _("net.inet.tcp.pcblist"), sizeof(varname));
540 break;
541 case IPPROTO_UDP:
542 sl_strlcpy(varname, _("net.inet.udp.pcblist"), sizeof(varname));
543 break;
544 case IPPROTO_DIVERT:
545 sl_strlcpy(varname, _("net.inet.divert.pcblist"), sizeof(varname));
546 break;
547 default:
548 return;
549 }
550
551 buf = NULL;
[196]552 bufsize = 8192;
[193]553 bufsize0 = bufsize;
554 retry = 5;
555 do {
556 for (;;) {
557 buf = xrealloc(buf, bufsize0, bufsize);
558 bufsize0 = bufsize;
559 len = bufsize;
560 if (sysctlbyname(varname, buf, &len, NULL, 0) == 0)
561 break;
[195]562 if (errno == ENOENT)
[193]563 goto out;
564 if (errno != ENOMEM)
565 {
566 SH_MUTEX_LOCK(mutex_thread_nolog);
[195]567 sh_error_handle(SH_ERR_ERR, FIL__, __LINE__,
568 0, MSG_E_SUBGEN,
[193]569 _("sysctlbyname()"),
570 _("gather_inet"));
571 SH_MUTEX_UNLOCK(mutex_thread_nolog);
[195]572 SH_FREE(buf);
[193]573 return;
574 }
575 bufsize *= 2;
576 }
577 xig = (struct xinpgen *)buf;
578 exig = (struct xinpgen *)(void *)
579 ((char *)buf + len - sizeof *exig);
580 if (xig->xig_len != sizeof *xig ||
581 exig->xig_len != sizeof *exig)
582 {
583 SH_MUTEX_LOCK(mutex_thread_nolog);
584 sh_error_handle(SH_ERR_ERR, FIL__, __LINE__, 0, MSG_E_SUBGEN,
585 _("struct xinpgen size mismatch"),
586 _("gather_inet"));
587 SH_MUTEX_UNLOCK(mutex_thread_nolog);
588 goto out;
589 }
590
591 } while (xig->xig_gen != exig->xig_gen && retry--);
592
593 if (xig->xig_gen != exig->xig_gen && opt_v)
594 {
595 SH_MUTEX_LOCK(mutex_thread_nolog);
596 sh_error_handle(SH_ERR_WARN, FIL__, __LINE__, 0, MSG_E_SUBGEN,
597 _("data may be inconsistent"),
598 _("gather_inet"));
599 SH_MUTEX_UNLOCK(mutex_thread_nolog);
600 }
601
602 for (;;) {
603 xig = (struct xinpgen *)(void *)((char *)xig + xig->xig_len);
604 if (xig >= exig)
605 break;
606 switch (proto) {
607 case IPPROTO_TCP:
608 xtp = (struct xtcpcb *)xig;
609 if (xtp->xt_len != sizeof *xtp) {
610 SH_MUTEX_LOCK(mutex_thread_nolog);
611 sh_error_handle(SH_ERR_WARN, FIL__, __LINE__, 0, MSG_E_SUBGEN,
612 _("struct xtcpcb size mismatch"),
613 _("gather_inet"));
614 SH_MUTEX_UNLOCK(mutex_thread_nolog);
615 goto out;
616 }
617 inp = &xtp->xt_inp;
618 so = &xtp->xt_socket;
619 break;
620 case IPPROTO_UDP:
621 case IPPROTO_DIVERT:
622 xip = (struct xinpcb *)xig;
623 if (xip->xi_len != sizeof *xip) {
624 SH_MUTEX_LOCK(mutex_thread_nolog);
625 sh_error_handle(SH_ERR_WARN, FIL__, __LINE__, 0, MSG_E_SUBGEN,
626 _("struct xinpcb size mismatch"),
627 _("gather_inet"));
628 SH_MUTEX_UNLOCK(mutex_thread_nolog);
629 goto out;
630 }
631 inp = &xip->xi_inp;
632 so = &xip->xi_socket;
633 break;
634 default:
635 return;
636 }
637 if ((inp->inp_vflag & vflag) == 0)
638 continue;
639 if (inp->inp_vflag & INP_IPV4) {
640 if ((inp->inp_fport == 0 && !opt_l) ||
641 (inp->inp_fport != 0 && !opt_c))
642 continue;
643 } else if (inp->inp_vflag & INP_IPV6) {
644 if ((inp->in6p_fport == 0 && !opt_l) ||
645 (inp->in6p_fport != 0 && !opt_c))
646 continue;
647 } else {
648 if (opt_v) {
649 char errmsg[64];
650 sl_snprintf(errmsg, sizeof(errmsg),
651 _("invalid vflag 0x%x"), inp->inp_vflag);
652 SH_MUTEX_LOCK(mutex_thread_nolog);
653 sh_error_handle(SH_ERR_WARN, FIL__, __LINE__, 0, MSG_E_SUBGEN,
654 errmsg,
655 _("gather_inet"));
656 SH_MUTEX_UNLOCK(mutex_thread_nolog);
657 continue;
658 }
659 }
660
661 sock = SH_ALLOC(sizeof *sock);
662 memset(sock, '\0', sizeof (*sock));
663
664 sock->socket = so->xso_so;
665 sock->proto = proto;
666 if (inp->inp_vflag & INP_IPV4) {
667 sock->family = AF_INET;
668 sockaddr(&sock->laddr, sock->family,
669 &inp->inp_laddr, inp->inp_lport);
670 sockaddr(&sock->faddr, sock->family,
671 &inp->inp_faddr, inp->inp_fport);
672 } else if (inp->inp_vflag & INP_IPV6) {
673 sock->family = AF_INET6;
674 sockaddr(&sock->laddr, sock->family,
675 &inp->in6p_laddr, inp->in6p_lport);
676 sockaddr(&sock->faddr, sock->family,
677 &inp->in6p_faddr, inp->in6p_fport);
678 }
679 sock->vflag = inp->inp_vflag;
680
681 hash = (int)((uintptr_t)sock->socket % HASHSIZE);
682 sock->next = sockhash[hash];
683 sockhash[hash] = sock;
684 }
685out:
[195]686 if (buf)
687 SH_FREE(buf);
[193]688}
689
690static void
691getfiles(void)
692{
693 size_t len;
694 size_t len0;
695
696 xfiles = SH_ALLOC(len = sizeof *xfiles);
697 len0 = len;
698
699 while (sysctlbyname(_("kern.file"), xfiles, &len, 0, 0) == -1) {
700 if (errno != ENOMEM)
701 {
[195]702 volatile int status = errno;
[193]703 SH_MUTEX_LOCK(mutex_thread_nolog);
704 sh_error_handle((-1), FIL__, __LINE__, status, MSG_E_SUBGEN,
705 _("sysctlbyname()"),
706 _("getfiles"));
707 SH_MUTEX_UNLOCK(mutex_thread_nolog);
708 }
709 len *= 2;
710 xfiles = xrealloc(xfiles, len0, len);
711 len0 = len;
712 }
713 if (len > 0 && xfiles->xf_size != sizeof *xfiles)
714 if (errno != ENOMEM)
715 {
[195]716 volatile int status = errno;
[193]717 SH_MUTEX_LOCK(mutex_thread_nolog);
718 sh_error_handle((-1), FIL__, __LINE__, status, MSG_E_SUBGEN,
719 _("struct xfile size mismatch"),
720 _("getfiles"));
721 SH_MUTEX_UNLOCK(mutex_thread_nolog);
722 }
723 nxfiles = len / sizeof *xfiles;
724}
725
726static const char *
727getprocname(pid_t pid)
728{
729 static struct kinfo_proc proc;
730 size_t len;
731 int mib[4];
732
733 mib[0] = CTL_KERN;
734 mib[1] = KERN_PROC;
735 mib[2] = KERN_PROC_PID;
736 mib[3] = (int)pid;
737 len = sizeof proc;
738 if (sysctl(mib, 4, &proc, &len, NULL, 0) == -1) {
739 /* Do not warn if the process exits before we get its name. */
740 if (errno != ESRCH)
741 {
[195]742 volatile int status = errno;
[193]743 SH_MUTEX_LOCK(mutex_thread_nolog);
744 sh_error_handle(SH_ERR_WARN, FIL__, __LINE__, status, MSG_E_SUBGEN,
745 _("sysctl()"),
746 _("getfiles"));
747 SH_MUTEX_UNLOCK(mutex_thread_nolog);
748 }
749 return ("-");
750 }
751 return (proc.ki_ocomm);
752}
753
[180]754char * sh_port2proc_query(int proto, struct in_addr * saddr, int sport,
[206]755 unsigned long * pid, char * user, size_t userlen)
[180]756{
[195]757 int n, hash;
[193]758 struct xfile *xf;
759 struct in_addr * haddr;
[195]760 struct sock * s;
[206]761
762 *pid = 0;
[193]763
764 for (xf = xfiles, n = 0; n < nxfiles; ++n, ++xf) {
765
766 if (xf->xf_data == NULL)
767 continue;
768
769 /* Find the socket in sockhash[] that corresponds to it
770 */
771 hash = (int)((uintptr_t)xf->xf_data % HASHSIZE);
772 for (s = sockhash[hash]; s != NULL; s = s->next)
773 if ((void *)s->socket == xf->xf_data)
774 break;
775
[195]776 if (!s)
777 continue;
778
779 /* fprintf(stderr, "FIXME: %d %d, %d %d, %d %d, %d, %d\n", s->proto, proto,
780 s->family, AF_INET,
781 sport, ntohs(((struct sockaddr_in *)(&s->laddr))->sin_port),
782 (int) xf->xf_uid, (int)xf->xf_pid);
783 */
784
[193]785 if (s->proto != proto)
786 continue;
787
788 if (s->family != AF_INET /* && s->family != AF_INET6 */)
789 continue;
790
[195]791 if (sport != ntohs(((struct sockaddr_in *)(&s->laddr))->sin_port))
[193]792 continue;
793
[195]794 haddr = &((struct sockaddr_in *)(&s->laddr))->sin_addr;
795
796 /* fprintf(stderr, "FIXME: %s\n", inet_ntoa(*haddr)); */
797 /* fprintf(stderr, "FIXME: %s\n", inet_ntoa(*saddr)); */
798
799 if (haddr->s_addr == saddr->s_addr || inet_lnaof(*saddr) == INADDR_ANY || inet_lnaof(*haddr) == INADDR_ANY)
[193]800 {
[195]801 struct sock_store try;
802
[206]803 *pid = xf->xf_pid;
804
[195]805 try.pid = xf->xf_pid;
806 try.path = NULL;
807 try.user = NULL;
808 get_user_and_path (&try); /* Try to get info from /proc */
809
810 if (try.path == NULL)
811 {
812 extern char * sh_unix_getUIDname (int level, uid_t uid, char * out, size_t len);
813 char * tmp = sh_unix_getUIDname (SH_ERR_ALL, xf->xf_uid, user, userlen);
814 if (!tmp)
815 sl_snprintf (user, userlen, "%ld", (unsigned long) xf->xf_uid);
816 return sh_util_strdup(getprocname(xf->xf_pid));
817 }
818 else
819 {
820 sl_strlcpy(user, try.user, userlen);
821 SH_FREE(try.user);
822 return try.path;
823 }
[193]824 }
825 }
[195]826 sl_strlcpy(user, "-", userlen);
827 return sh_util_strdup("-");
[193]828}
829
830static void sockdel(struct sock * sock)
831{
832 if (sock)
833 {
834 if (sock->next)
835 sockdel(sock->next);
836 SH_FREE(sock);
837 }
838 return;
839}
840
841int sh_port2proc_prepare()
842{
843 int i;
844
845 if (xfiles)
846 {
847 SH_FREE(xfiles);
848 xfiles = NULL;
849 }
850
851 for (i = 0; i < HASHSIZE; ++i)
[195]852 {
853 sockdel(sockhash[i]);
854 sockhash[i] = NULL;
855 }
[193]856
857 /* Inet connections
858 */
859 gather_inet(IPPROTO_TCP);
860 gather_inet(IPPROTO_UDP);
861 gather_inet(IPPROTO_DIVERT);
862
863 getfiles();
864
865 return 0;
866}
867
868#else /* !defined(__linux__) && !defined(__FreeBSD__) */
869
870char * sh_port2proc_query(int proto, struct in_addr * saddr, int sport,
[206]871 unsigned long * pid, char * user, size_t userlen)
[193]872{
[180]873 (void) proto;
874 (void) saddr;
875 (void) sport;
876
[206]877 *pid = 0;
878
[180]879 sl_strlcpy(user, "-", userlen);
880 return sh_util_strdup("-");
881}
882
883int sh_port2proc_prepare()
884{
885 return 0;
886}
887
888#endif
889
890#endif /* defined(SH_USE_PORTCHECK) */
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