diff options
Diffstat (limited to 'sys/contrib/ipfilter/netinet/ip_log.c')
| -rw-r--r-- | sys/contrib/ipfilter/netinet/ip_log.c | 700 |
1 files changed, 0 insertions, 700 deletions
diff --git a/sys/contrib/ipfilter/netinet/ip_log.c b/sys/contrib/ipfilter/netinet/ip_log.c deleted file mode 100644 index aed828e..0000000 --- a/sys/contrib/ipfilter/netinet/ip_log.c +++ /dev/null @@ -1,700 +0,0 @@ -/* - * Copyright (C) 1997-2003 by Darren Reed. - * - * See the IPFILTER.LICENCE file for details on licencing. - * - * $Id: ip_log.c,v 2.75.2.19 2007/09/09 11:32:06 darrenr Exp $ - */ -#include <sys/param.h> -#if defined(KERNEL) || defined(_KERNEL) -# undef KERNEL -# undef _KERNEL -# define KERNEL 1 -# define _KERNEL 1 -#endif -#if defined(__NetBSD__) && (NetBSD >= 199905) && !defined(IPFILTER_LKM) && \ - defined(_KERNEL) -# if (__NetBSD_Version__ < 399001400) -# include "opt_ipfilter_log.h" -# else -# include "opt_ipfilter.h" -# endif -#endif -#if defined(__FreeBSD__) && !defined(IPFILTER_LKM) -# if defined(_KERNEL) -# if defined(__FreeBSD_version) && (__FreeBSD_version >= 300000) -# include "opt_ipfilter.h" -# endif -# else -# include <osreldate.h> -# endif -#endif -#ifndef SOLARIS -# define SOLARIS (defined(sun) && (defined(__svr4__) || defined(__SVR4))) -#endif -#include <sys/errno.h> -#include <sys/types.h> -#include <sys/file.h> -#ifndef _KERNEL -# include <stdio.h> -# include <string.h> -# include <stdlib.h> -# include <ctype.h> -# define _KERNEL -# define KERNEL -# ifdef __OpenBSD__ -struct file; -# endif -# include <sys/uio.h> -# undef _KERNEL -# undef KERNEL -#endif -#if __FreeBSD_version >= 220000 && defined(_KERNEL) -# include <sys/fcntl.h> -# include <sys/filio.h> -#else -# include <sys/ioctl.h> -#endif -#include <sys/time.h> -#if defined(_KERNEL) -# include <sys/systm.h> -# if defined(NetBSD) && (__NetBSD_Version__ >= 104000000) -# include <sys/proc.h> -# endif -#endif /* _KERNEL */ -#if !SOLARIS && !defined(__hpux) && !defined(linux) -# if (NetBSD > 199609) || (OpenBSD > 199603) || (__FreeBSD_version >= 300000) -# include <sys/dirent.h> -# else -# include <sys/dir.h> -# endif -# include <sys/mbuf.h> -# include <sys/select.h> -# if __FreeBSD_version >= 500000 -# include <sys/selinfo.h> -# endif -#else -# if !defined(__hpux) && defined(_KERNEL) -# include <sys/filio.h> -# include <sys/cred.h> -# include <sys/ddi.h> -# include <sys/sunddi.h> -# include <sys/ksynch.h> -# include <sys/kmem.h> -# include <sys/mkdev.h> -# include <sys/dditypes.h> -# include <sys/cmn_err.h> -# endif /* !__hpux */ -#endif /* !SOLARIS && !__hpux */ -#if !defined(linux) -# include <sys/protosw.h> -#endif -#include <sys/socket.h> - -#include <net/if.h> -#ifdef sun -# include <net/af.h> -#endif -#if __FreeBSD_version >= 300000 -# include <net/if_var.h> -#endif -#include <net/route.h> -#include <netinet/in.h> -#ifdef __sgi -# include <sys/ddi.h> -# ifdef IFF_DRVRLOCK /* IRIX6 */ -# include <sys/hashing.h> -# endif -#endif -#if !defined(__hpux) && !defined(linux) && \ - !(defined(__sgi) && !defined(IFF_DRVRLOCK)) /*IRIX<6*/ -# include <netinet/in_var.h> -#endif -#include <netinet/in_systm.h> -#include <netinet/ip.h> -#include <netinet/tcp.h> -#include <netinet/udp.h> -#include <netinet/ip_icmp.h> -#ifdef USE_INET6 -# include <netinet/icmp6.h> -#endif -#if !defined(linux) -# include <netinet/ip_var.h> -#endif -#ifndef _KERNEL -# include <syslog.h> -#endif -#include "netinet/ip_compat.h" -#include <netinet/tcpip.h> -#include "netinet/ip_fil.h" -#include "netinet/ip_nat.h" -#include "netinet/ip_frag.h" -#include "netinet/ip_state.h" -#include "netinet/ip_auth.h" -#if (__FreeBSD_version >= 300000) || defined(__NetBSD__) -# include <sys/malloc.h> -#endif -/* END OF INCLUDES */ - -#ifdef IPFILTER_LOG - -# if defined(IPL_SELECT) -# include <machine/sys/user.h> -# include <sys/kthread_iface.h> -# define READ_COLLISION 0x001 - -iplog_select_t iplog_ss[IPL_LOGMAX+1]; - -extern int selwait; -# endif /* IPL_SELECT */ - -# if defined(linux) && defined(_KERNEL) -wait_queue_head_t iplh_linux[IPL_LOGSIZE]; -# endif -# if SOLARIS && defined(_KERNEL) -extern kcondvar_t iplwait; -extern struct pollhead iplpollhead[IPL_LOGSIZE]; -# endif - -iplog_t **iplh[IPL_LOGSIZE], *iplt[IPL_LOGSIZE], *ipll[IPL_LOGSIZE]; -int iplused[IPL_LOGSIZE]; -static fr_info_t iplcrc[IPL_LOGSIZE]; -int ipl_suppress = 1; -int ipl_logmax = IPL_LOGMAX; -int ipl_logall = 0; -int ipl_log_init = 0; -int ipl_logsize = IPFILTER_LOGSIZE; -int ipl_magic[IPL_LOGSIZE] = { IPL_MAGIC, IPL_MAGIC_NAT, IPL_MAGIC_STATE, - IPL_MAGIC, IPL_MAGIC, IPL_MAGIC, - IPL_MAGIC, IPL_MAGIC }; - - -/* ------------------------------------------------------------------------ */ -/* Function: fr_loginit */ -/* Returns: int - 0 == success (always returned) */ -/* Parameters: Nil */ -/* */ -/* Initialise log buffers & pointers. Also iniialised the CRC to a local */ -/* secret for use in calculating the "last log checksum". */ -/* ------------------------------------------------------------------------ */ -int fr_loginit() -{ - int i; - - for (i = IPL_LOGMAX; i >= 0; i--) { - iplt[i] = NULL; - ipll[i] = NULL; - iplh[i] = &iplt[i]; - iplused[i] = 0; - bzero((char *)&iplcrc[i], sizeof(iplcrc[i])); -# ifdef IPL_SELECT - iplog_ss[i].read_waiter = 0; - iplog_ss[i].state = 0; -# endif -# if defined(linux) && defined(_KERNEL) - init_waitqueue_head(iplh_linux + i); -# endif - } - -# if SOLARIS && defined(_KERNEL) - cv_init(&iplwait, "ipl condvar", CV_DRIVER, NULL); -# endif - MUTEX_INIT(&ipl_mutex, "ipf log mutex"); - - ipl_log_init = 1; - - return 0; -} - - -/* ------------------------------------------------------------------------ */ -/* Function: fr_logunload */ -/* Returns: Nil */ -/* Parameters: Nil */ -/* */ -/* Clean up any log data that has accumulated without being read. */ -/* ------------------------------------------------------------------------ */ -void fr_logunload() -{ - int i; - - if (ipl_log_init == 0) - return; - - for (i = IPL_LOGMAX; i >= 0; i--) - (void) ipflog_clear(i); - -# if SOLARIS && defined(_KERNEL) - cv_destroy(&iplwait); -# endif - MUTEX_DESTROY(&ipl_mutex); - - ipl_log_init = 0; -} - - -/* ------------------------------------------------------------------------ */ -/* Function: ipflog */ -/* Returns: int - 0 == success, -1 == failure */ -/* Parameters: fin(I) - pointer to packet information */ -/* flags(I) - flags from filter rules */ -/* */ -/* Create a log record for a packet given that it has been triggered by a */ -/* rule (or the default setting). Calculate the transport protocol header */ -/* size using predetermined size of a couple of popular protocols and thus */ -/* how much data to copy into the log, including part of the data body if */ -/* requested. */ -/* ------------------------------------------------------------------------ */ -int ipflog(fin, flags) -fr_info_t *fin; -u_int flags; -{ - register size_t hlen; - int types[2], mlen; - size_t sizes[2]; - void *ptrs[2]; - ipflog_t ipfl; - u_char p; - mb_t *m; -# if (SOLARIS || defined(__hpux)) && defined(_KERNEL) && \ - !defined(_INET_IP_STACK_H) - qif_t *ifp; -# else - struct ifnet *ifp; -# endif /* SOLARIS || __hpux */ - - m = fin->fin_m; - if (m == NULL) - return -1; - - ipfl.fl_nattag.ipt_num[0] = 0; - ifp = fin->fin_ifp; - if (fin->fin_exthdr != NULL) - hlen = (char *)fin->fin_dp - (char *)fin->fin_ip; - else - hlen = fin->fin_hlen; - /* - * calculate header size. - */ - if (fin->fin_off == 0) { - p = fin->fin_fi.fi_p; - if (p == IPPROTO_TCP) - hlen += MIN(sizeof(tcphdr_t), fin->fin_dlen); - else if (p == IPPROTO_UDP) - hlen += MIN(sizeof(udphdr_t), fin->fin_dlen); - else if (p == IPPROTO_ICMP) { - struct icmp *icmp; - - icmp = (struct icmp *)fin->fin_dp; - - /* - * For ICMP, if the packet is an error packet, also - * include the information about the packet which - * caused the error. - */ - switch (icmp->icmp_type) - { - case ICMP_UNREACH : - case ICMP_SOURCEQUENCH : - case ICMP_REDIRECT : - case ICMP_TIMXCEED : - case ICMP_PARAMPROB : - hlen += MIN(sizeof(struct icmp) + 8, - fin->fin_dlen); - break; - default : - hlen += MIN(sizeof(struct icmp), - fin->fin_dlen); - break; - } - } -# ifdef USE_INET6 - else if (p == IPPROTO_ICMPV6) { - struct icmp6_hdr *icmp; - - icmp = (struct icmp6_hdr *)fin->fin_dp; - - /* - * For ICMPV6, if the packet is an error packet, also - * include the information about the packet which - * caused the error. - */ - if (icmp->icmp6_type < 128) { - hlen += MIN(sizeof(struct icmp6_hdr) + 8, - fin->fin_dlen); - } else { - hlen += MIN(sizeof(struct icmp6_hdr), - fin->fin_dlen); - } - } -# endif - } - /* - * Get the interface number and name to which this packet is - * currently associated. - */ -# if (SOLARIS || defined(__hpux)) && defined(_KERNEL) && \ - !defined(_INET_IP_STACK_H) - ipfl.fl_unit = (u_int)ifp->qf_ppa; - COPYIFNAME(fin->fin_v, ifp, ipfl.fl_ifname); -# else -# if (defined(NetBSD) && (NetBSD <= 1991011) && (NetBSD >= 199603)) || \ - (defined(OpenBSD) && (OpenBSD >= 199603)) || defined(linux) || \ - (defined(__FreeBSD__) && (__FreeBSD_version >= 501113)) || \ - (SOLARIS && defined(_INET_IP_STACK_H)) - COPYIFNAME(fin->fin_v, ifp, ipfl.fl_ifname); -# else - ipfl.fl_unit = (u_int)ifp->if_unit; -# if defined(_KERNEL) - if ((ipfl.fl_ifname[0] = ifp->if_name[0])) - if ((ipfl.fl_ifname[1] = ifp->if_name[1])) - if ((ipfl.fl_ifname[2] = ifp->if_name[2])) - ipfl.fl_ifname[3] = ifp->if_name[3]; -# else - COPYIFNAME(fin->fin_v, ifp, ipfl.fl_ifname); - ipfl.fl_ifname[sizeof(ipfl.fl_ifname) - 1] = '\0'; -# endif -# endif -# endif /* __hpux || SOLARIS */ - mlen = fin->fin_plen - hlen; - if (!ipl_logall) { - mlen = (flags & FR_LOGBODY) ? MIN(mlen, 128) : 0; - } else if ((flags & FR_LOGBODY) == 0) { - mlen = 0; - } - if (mlen < 0) - mlen = 0; - ipfl.fl_plen = (u_char)mlen; - ipfl.fl_hlen = (u_char)hlen; - ipfl.fl_rule = fin->fin_rule; - (void) strncpy(ipfl.fl_group, fin->fin_group, FR_GROUPLEN); - if (fin->fin_fr != NULL) { - ipfl.fl_loglevel = fin->fin_fr->fr_loglevel; - ipfl.fl_logtag = fin->fin_fr->fr_logtag; - } else { - ipfl.fl_loglevel = 0xffff; - ipfl.fl_logtag = FR_NOLOGTAG; - } - if (fin->fin_nattag != NULL) - bcopy(fin->fin_nattag, (void *)&ipfl.fl_nattag, - sizeof(ipfl.fl_nattag)); - ipfl.fl_flags = flags; - ipfl.fl_dir = fin->fin_out; - ipfl.fl_lflags = fin->fin_flx; - ptrs[0] = (void *)&ipfl; - sizes[0] = sizeof(ipfl); - types[0] = 0; -# if defined(MENTAT) && defined(_KERNEL) - /* - * Are we copied from the mblk or an aligned array ? - */ - if (fin->fin_ip == (ip_t *)m->b_rptr) { - ptrs[1] = m; - sizes[1] = hlen + mlen; - types[1] = 1; - } else { - ptrs[1] = fin->fin_ip; - sizes[1] = hlen + mlen; - types[1] = 0; - } -# else - ptrs[1] = m; - sizes[1] = hlen + mlen; - types[1] = 1; -# endif /* MENTAT */ - return ipllog(IPL_LOGIPF, fin, ptrs, sizes, types, 2); -} - - -/* ------------------------------------------------------------------------ */ -/* Function: ipllog */ -/* Returns: int - 0 == success, -1 == failure */ -/* Parameters: dev(I) - device that owns this log record */ -/* fin(I) - pointer to packet information */ -/* items(I) - array of pointers to log data */ -/* itemsz(I) - array of size of valid memory pointed to */ -/* types(I) - type of data pointed to by items pointers */ -/* cnt(I) - number of elements in arrays items/itemsz/types */ -/* */ -/* Takes an array of parameters and constructs one record to include the */ -/* miscellaneous packet information, as well as packet data, for reading */ -/* from the log device. */ -/* ------------------------------------------------------------------------ */ -int ipllog(dev, fin, items, itemsz, types, cnt) -int dev; -fr_info_t *fin; -void **items; -size_t *itemsz; -int *types, cnt; -{ - u_char *buf, *ptr; - iplog_t *ipl; - size_t len; - int i; - SPL_INT(s); - - /* - * Check to see if this log record has a CRC which matches the last - * record logged. If it does, just up the count on the previous one - * rather than create a new one. - */ - if (ipl_suppress) { - MUTEX_ENTER(&ipl_mutex); - if ((fin != NULL) && (fin->fin_off == 0)) { - if ((ipll[dev] != NULL) && - bcmp((char *)fin, (char *)&iplcrc[dev], - FI_LCSIZE) == 0) { - ipll[dev]->ipl_count++; - MUTEX_EXIT(&ipl_mutex); - return 0; - } - bcopy((char *)fin, (char *)&iplcrc[dev], FI_LCSIZE); - } else - bzero((char *)&iplcrc[dev], FI_CSIZE); - MUTEX_EXIT(&ipl_mutex); - } - - /* - * Get the total amount of data to be logged. - */ - for (i = 0, len = sizeof(iplog_t); i < cnt; i++) - len += itemsz[i]; - - /* - * check that we have space to record this information and can - * allocate that much. - */ - KMALLOCS(buf, u_char *, len); - if (buf == NULL) - return -1; - SPL_NET(s); - MUTEX_ENTER(&ipl_mutex); - if ((iplused[dev] + len) > ipl_logsize) { - MUTEX_EXIT(&ipl_mutex); - SPL_X(s); - KFREES(buf, len); - return -1; - } - iplused[dev] += len; - MUTEX_EXIT(&ipl_mutex); - SPL_X(s); - - /* - * advance the log pointer to the next empty record and deduct the - * amount of space we're going to use. - */ - ipl = (iplog_t *)buf; - ipl->ipl_magic = ipl_magic[dev]; - ipl->ipl_count = 1; - ipl->ipl_next = NULL; - ipl->ipl_dsize = len; -#ifdef _KERNEL - GETKTIME(&ipl->ipl_sec); -#else - ipl->ipl_sec = 0; - ipl->ipl_usec = 0; -#endif - - /* - * Loop through all the items to be logged, copying each one to the - * buffer. Use bcopy for normal data or the mb_t copyout routine. - */ - for (i = 0, ptr = buf + sizeof(*ipl); i < cnt; i++) { - if (types[i] == 0) { - bcopy(items[i], ptr, itemsz[i]); - } else if (types[i] == 1) { - COPYDATA(items[i], 0, itemsz[i], (char *)ptr); - } - ptr += itemsz[i]; - } - SPL_NET(s); - MUTEX_ENTER(&ipl_mutex); - ipll[dev] = ipl; - *iplh[dev] = ipl; - iplh[dev] = &ipl->ipl_next; - - /* - * Now that the log record has been completed and added to the queue, - * wake up any listeners who may want to read it. - */ -# if SOLARIS && defined(_KERNEL) - cv_signal(&iplwait); - MUTEX_EXIT(&ipl_mutex); - pollwakeup(&iplpollhead[dev], POLLRDNORM); -# else - MUTEX_EXIT(&ipl_mutex); - WAKEUP(iplh, dev); - POLLWAKEUP(dev); -# endif - SPL_X(s); -# ifdef IPL_SELECT - iplog_input_ready(dev); -# endif - return 0; -} - - -/* ------------------------------------------------------------------------ */ -/* Function: ipflog_read */ -/* Returns: int - 0 == success, else error value. */ -/* Parameters: unit(I) - device we are reading from */ -/* uio(O) - pointer to information about where to store data */ -/* */ -/* Called to handle a read on an IPFilter device. Returns only complete */ -/* log messages - will not partially copy a log record out to userland. */ -/* */ -/* NOTE: This function will block and wait for a signal to return data if */ -/* there is none present. Asynchronous I/O is not implemented. */ -/* ------------------------------------------------------------------------ */ -int ipflog_read(unit, uio) -minor_t unit; -struct uio *uio; -{ - size_t dlen, copied; - int error = 0; - iplog_t *ipl; - SPL_INT(s); - - /* - * Sanity checks. Make sure the minor # is valid and we're copying - * a valid chunk of data. - */ - if (IPL_LOGMAX < unit) - return ENXIO; - if (uio->uio_resid == 0) - return 0; - if ((uio->uio_resid < sizeof(iplog_t)) || - (uio->uio_resid > ipl_logsize)) - return EINVAL; - - /* - * Lock the log so we can snapshot the variables. Wait for a signal - * if the log is empty. - */ - SPL_NET(s); - MUTEX_ENTER(&ipl_mutex); - - while (iplt[unit] == NULL) { -# if SOLARIS && defined(_KERNEL) - if (!cv_wait_sig(&iplwait, &ipl_mutex.ipf_lk)) { - MUTEX_EXIT(&ipl_mutex); - return EINTR; - } -# else -# if defined(__hpux) && defined(_KERNEL) - lock_t *l; - -# ifdef IPL_SELECT - if (uio->uio_fpflags & (FNBLOCK|FNDELAY)) { - /* this is no blocking system call */ - MUTEX_EXIT(&ipl_mutex); - return 0; - } -# endif - - MUTEX_EXIT(&ipl_mutex); - l = get_sleep_lock(&iplh[unit]); - error = sleep(&iplh[unit], PZERO+1); - spinunlock(l); -# else -# if defined(__osf__) && defined(_KERNEL) - error = mpsleep(&iplh[unit], PSUSP|PCATCH, "iplread", 0, - &ipl_mutex, MS_LOCK_SIMPLE); -# else - MUTEX_EXIT(&ipl_mutex); - SPL_X(s); - error = SLEEP(unit + iplh, "ipl sleep"); -# endif /* __osf__ */ -# endif /* __hpux */ - if (error) - return error; - SPL_NET(s); - MUTEX_ENTER(&ipl_mutex); -# endif /* SOLARIS */ - } - -# if (BSD >= 199101) || defined(__FreeBSD__) || defined(__osf__) - uio->uio_rw = UIO_READ; -# endif - - for (copied = 0; (ipl = iplt[unit]) != NULL; copied += dlen) { - dlen = ipl->ipl_dsize; - if (dlen > uio->uio_resid) - break; - /* - * Don't hold the mutex over the uiomove call. - */ - iplt[unit] = ipl->ipl_next; - iplused[unit] -= dlen; - MUTEX_EXIT(&ipl_mutex); - SPL_X(s); - error = UIOMOVE(ipl, dlen, UIO_READ, uio); - if (error) { - SPL_NET(s); - MUTEX_ENTER(&ipl_mutex); - ipl->ipl_next = iplt[unit]; - iplt[unit] = ipl; - iplused[unit] += dlen; - break; - } - MUTEX_ENTER(&ipl_mutex); - KFREES(ipl, dlen); - SPL_NET(s); - } - if (!iplt[unit]) { - iplused[unit] = 0; - iplh[unit] = &iplt[unit]; - ipll[unit] = NULL; - } - - MUTEX_EXIT(&ipl_mutex); - SPL_X(s); - return error; -} - - -/* ------------------------------------------------------------------------ */ -/* Function: ipflog_clear */ -/* Returns: int - number of log bytes cleared. */ -/* Parameters: unit(I) - device we are reading from */ -/* */ -/* Deletes all queued up log records for a given output device. */ -/* ------------------------------------------------------------------------ */ -int ipflog_clear(unit) -minor_t unit; -{ - iplog_t *ipl; - int used; - SPL_INT(s); - - SPL_NET(s); - MUTEX_ENTER(&ipl_mutex); - while ((ipl = iplt[unit]) != NULL) { - iplt[unit] = ipl->ipl_next; - KFREES(ipl, ipl->ipl_dsize); - } - iplh[unit] = &iplt[unit]; - ipll[unit] = NULL; - used = iplused[unit]; - iplused[unit] = 0; - bzero((char *)&iplcrc[unit], FI_CSIZE); - MUTEX_EXIT(&ipl_mutex); - SPL_X(s); - return used; -} - - -/* ------------------------------------------------------------------------ */ -/* Function: ipflog_canread */ -/* Returns: int - 0 == no data to read, 1 = data present */ -/* Parameters: unit(I) - device we are reading from */ -/* */ -/* Returns an indication of whether or not there is data present in the */ -/* current buffer for the selected ipf device. */ -/* ------------------------------------------------------------------------ */ -int ipflog_canread(unit) -int unit; -{ - return iplt[unit] != NULL; -} -#endif /* IPFILTER_LOG */ |
