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-rw-r--r--contrib/ipfilter/ip_sync.c1001
1 files changed, 0 insertions, 1001 deletions
diff --git a/contrib/ipfilter/ip_sync.c b/contrib/ipfilter/ip_sync.c
deleted file mode 100644
index 396bae7..0000000
--- a/contrib/ipfilter/ip_sync.c
+++ /dev/null
@@ -1,1001 +0,0 @@
-/* $NetBSD$ */
-
-/*
- * Copyright (C) 1995-1998 by Darren Reed.
- *
- * See the IPFILTER.LICENCE file for details on licencing.
- */
-#if defined(KERNEL) || defined(_KERNEL)
-# undef KERNEL
-# undef _KERNEL
-# define KERNEL 1
-# define _KERNEL 1
-#endif
-#include <sys/errno.h>
-#include <sys/types.h>
-#include <sys/param.h>
-#include <sys/file.h>
-#if !defined(_KERNEL) && !defined(__KERNEL__)
-# include <stdio.h>
-# include <stdlib.h>
-# include <string.h>
-# define _KERNEL
-# define KERNEL
-# ifdef __OpenBSD__
-struct file;
-# endif
-# include <sys/uio.h>
-# undef _KERNEL
-# undef KERNEL
-#else
-# include <sys/systm.h>
-# if !defined(__SVR4) && !defined(__svr4__)
-# include <sys/mbuf.h>
-# endif
-#endif
-#if defined(__NetBSD__) && (__NetBSD_Version__ >= 104000000)
-# include <sys/proc.h>
-#endif
-#if defined(_KERNEL) && (__FreeBSD_version >= 220000)
-# include <sys/filio.h>
-# include <sys/fcntl.h>
-# if (__FreeBSD_version >= 300000) && !defined(IPFILTER_LKM)
-# include "opt_ipfilter.h"
-# endif
-#else
-# include <sys/ioctl.h>
-#endif
-#include <sys/time.h>
-#if !defined(linux)
-# include <sys/protosw.h>
-#endif
-#include <sys/socket.h>
-#if defined(__SVR4) || defined(__svr4__)
-# include <sys/filio.h>
-# include <sys/byteorder.h>
-# ifdef _KERNEL
-# include <sys/dditypes.h>
-# endif
-# include <sys/stream.h>
-# include <sys/kmem.h>
-#endif
-
-#include <net/if.h>
-#ifdef sun
-# include <net/af.h>
-#endif
-#include <net/route.h>
-#include <netinet/in.h>
-#include <netinet/in_systm.h>
-#include <netinet/ip.h>
-#include <netinet/tcp.h>
-#if !defined(linux)
-# include <netinet/ip_var.h>
-#endif
-#if !defined(__hpux) && !defined(linux)
-# include <netinet/tcp_fsm.h>
-#endif
-#include <netinet/udp.h>
-#include <netinet/ip_icmp.h>
-#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_proxy.h"
-#include "netinet/ip_sync.h"
-#ifdef USE_INET6
-#include <netinet/icmp6.h>
-#endif
-#if (__FreeBSD_version >= 300000)
-# include <sys/malloc.h>
-# if defined(_KERNEL) && !defined(IPFILTER_LKM)
-# include <sys/libkern.h>
-# include <sys/systm.h>
-# endif
-#endif
-/* END OF INCLUDES */
-
-#if !defined(lint)
-static const char rcsid[] = "@(#)Id: ip_sync.c,v 2.40.2.3 2005/02/18 13:06:29 darrenr Exp";
-#endif
-
-#define SYNC_STATETABSZ 256
-#define SYNC_NATTABSZ 256
-
-#ifdef IPFILTER_SYNC
-ipfmutex_t ipf_syncadd, ipsl_mutex;
-ipfrwlock_t ipf_syncstate, ipf_syncnat;
-#if SOLARIS && defined(_KERNEL)
-kcondvar_t ipslwait;
-#endif
-synclist_t *syncstatetab[SYNC_STATETABSZ];
-synclist_t *syncnattab[SYNC_NATTABSZ];
-synclogent_t synclog[SYNCLOG_SZ];
-syncupdent_t syncupd[SYNCLOG_SZ];
-u_int ipf_syncnum = 1;
-u_int ipf_syncwrap = 0;
-u_int sl_idx = 0, /* next available sync log entry */
- su_idx = 0, /* next available sync update entry */
- sl_tail = 0, /* next sync log entry to read */
- su_tail = 0; /* next sync update entry to read */
-int ipf_sync_debug = 0;
-
-
-# if !defined(sparc) && !defined(__hppa)
-void ipfsync_tcporder __P((int, struct tcpdata *));
-void ipfsync_natorder __P((int, struct nat *));
-void ipfsync_storder __P((int, struct ipstate *));
-# endif
-
-
-/* ------------------------------------------------------------------------ */
-/* Function: ipfsync_init */
-/* Returns: int - 0 == success, -1 == failure */
-/* Parameters: Nil */
-/* */
-/* Initialise all of the locks required for the sync code and initialise */
-/* any data structures, as required. */
-/* ------------------------------------------------------------------------ */
-int ipfsync_init()
-{
- RWLOCK_INIT(&ipf_syncstate, "add things to state sync table");
- RWLOCK_INIT(&ipf_syncnat, "add things to nat sync table");
- MUTEX_INIT(&ipf_syncadd, "add things to sync table");
- MUTEX_INIT(&ipsl_mutex, "add things to sync table");
-# if SOLARIS && defined(_KERNEL)
- cv_init(&ipslwait, "ipsl condvar", CV_DRIVER, NULL);
-# endif
-
- bzero((char *)syncnattab, sizeof(syncnattab));
- bzero((char *)syncstatetab, sizeof(syncstatetab));
-
- return 0;
-}
-
-
-# if !defined(sparc) && !defined(__hppa)
-/* ------------------------------------------------------------------------ */
-/* Function: ipfsync_tcporder */
-/* Returns: Nil */
-/* Parameters: way(I) - direction of byte order conversion. */
-/* td(IO) - pointer to data to be converted. */
-/* */
-/* Do byte swapping on values in the TCP state information structure that */
-/* need to be used at both ends by the host in their native byte order. */
-/* ------------------------------------------------------------------------ */
-void ipfsync_tcporder(way, td)
-int way;
-tcpdata_t *td;
-{
- if (way) {
- td->td_maxwin = htons(td->td_maxwin);
- td->td_end = htonl(td->td_end);
- td->td_maxend = htonl(td->td_maxend);
- } else {
- td->td_maxwin = ntohs(td->td_maxwin);
- td->td_end = ntohl(td->td_end);
- td->td_maxend = ntohl(td->td_maxend);
- }
-}
-
-
-/* ------------------------------------------------------------------------ */
-/* Function: ipfsync_natorder */
-/* Returns: Nil */
-/* Parameters: way(I) - direction of byte order conversion. */
-/* nat(IO) - pointer to data to be converted. */
-/* */
-/* Do byte swapping on values in the NAT data structure that need to be */
-/* used at both ends by the host in their native byte order. */
-/* ------------------------------------------------------------------------ */
-void ipfsync_natorder(way, n)
-int way;
-nat_t *n;
-{
- if (way) {
- n->nat_age = htonl(n->nat_age);
- n->nat_flags = htonl(n->nat_flags);
- n->nat_ipsumd = htonl(n->nat_ipsumd);
- n->nat_use = htonl(n->nat_use);
- n->nat_dir = htonl(n->nat_dir);
- } else {
- n->nat_age = ntohl(n->nat_age);
- n->nat_flags = ntohl(n->nat_flags);
- n->nat_ipsumd = ntohl(n->nat_ipsumd);
- n->nat_use = ntohl(n->nat_use);
- n->nat_dir = ntohl(n->nat_dir);
- }
-}
-
-
-/* ------------------------------------------------------------------------ */
-/* Function: ipfsync_storder */
-/* Returns: Nil */
-/* Parameters: way(I) - direction of byte order conversion. */
-/* ips(IO) - pointer to data to be converted. */
-/* */
-/* Do byte swapping on values in the IP state data structure that need to */
-/* be used at both ends by the host in their native byte order. */
-/* ------------------------------------------------------------------------ */
-void ipfsync_storder(way, ips)
-int way;
-ipstate_t *ips;
-{
- ipfsync_tcporder(way, &ips->is_tcp.ts_data[0]);
- ipfsync_tcporder(way, &ips->is_tcp.ts_data[1]);
-
- if (way) {
- ips->is_hv = htonl(ips->is_hv);
- ips->is_die = htonl(ips->is_die);
- ips->is_pass = htonl(ips->is_pass);
- ips->is_flags = htonl(ips->is_flags);
- ips->is_opt = htonl(ips->is_opt);
- ips->is_optmsk = htonl(ips->is_optmsk);
- ips->is_sec = htons(ips->is_sec);
- ips->is_secmsk = htons(ips->is_secmsk);
- ips->is_auth = htons(ips->is_auth);
- ips->is_authmsk = htons(ips->is_authmsk);
- ips->is_s0[0] = htonl(ips->is_s0[0]);
- ips->is_s0[1] = htonl(ips->is_s0[1]);
- ips->is_smsk[0] = htons(ips->is_smsk[0]);
- ips->is_smsk[1] = htons(ips->is_smsk[1]);
- } else {
- ips->is_hv = ntohl(ips->is_hv);
- ips->is_die = ntohl(ips->is_die);
- ips->is_pass = ntohl(ips->is_pass);
- ips->is_flags = ntohl(ips->is_flags);
- ips->is_opt = ntohl(ips->is_opt);
- ips->is_optmsk = ntohl(ips->is_optmsk);
- ips->is_sec = ntohs(ips->is_sec);
- ips->is_secmsk = ntohs(ips->is_secmsk);
- ips->is_auth = ntohs(ips->is_auth);
- ips->is_authmsk = ntohs(ips->is_authmsk);
- ips->is_s0[0] = ntohl(ips->is_s0[0]);
- ips->is_s0[1] = ntohl(ips->is_s0[1]);
- ips->is_smsk[0] = ntohl(ips->is_smsk[0]);
- ips->is_smsk[1] = ntohl(ips->is_smsk[1]);
- }
-}
-# else /* !defined(sparc) && !defined(__hppa) */
-# define ipfsync_tcporder(x,y)
-# define ipfsync_natorder(x,y)
-# define ipfsync_storder(x,y)
-# endif /* !defined(sparc) && !defined(__hppa) */
-
-/* enable this for debugging */
-
-# ifdef _KERNEL
-/* ------------------------------------------------------------------------ */
-/* Function: ipfsync_write */
-/* Returns: int - 0 == success, else error value. */
-/* Parameters: uio(I) - pointer to information about data to write */
-/* */
-/* Moves data from user space into the kernel and uses it for updating data */
-/* structures in the state/NAT tables. */
-/* ------------------------------------------------------------------------ */
-int ipfsync_write(uio)
-struct uio *uio;
-{
- synchdr_t sh;
-
- /*
- * THIS MUST BE SUFFICIENT LARGE TO STORE
- * ANY POSSIBLE DATA TYPE
- */
- char data[2048];
-
- int err = 0;
-
-# if (BSD >= 199306) || defined(__FreeBSD__) || defined(__osf__)
- uio->uio_rw = UIO_WRITE;
-# endif
-
- /* Try to get bytes */
- while (uio->uio_resid > 0) {
-
- if (uio->uio_resid >= sizeof(sh)) {
-
- err = UIOMOVE((caddr_t)&sh, sizeof(sh), UIO_WRITE, uio);
-
- if (err) {
- if (ipf_sync_debug > 2)
- printf("uiomove(header) failed: %d\n",
- err);
- return err;
- }
-
- /* convert to host order */
- sh.sm_magic = ntohl(sh.sm_magic);
- sh.sm_len = ntohl(sh.sm_len);
- sh.sm_num = ntohl(sh.sm_num);
-
- if (ipf_sync_debug > 8)
- printf("[%d] Read v:%d p:%d cmd:%d table:%d rev:%d len:%d magic:%x\n",
- sh.sm_num, sh.sm_v, sh.sm_p, sh.sm_cmd,
- sh.sm_table, sh.sm_rev, sh.sm_len,
- sh.sm_magic);
-
- if (sh.sm_magic != SYNHDRMAGIC) {
- if (ipf_sync_debug > 2)
- printf("uiomove(header) invalud %s\n",
- "magic");
- return EINVAL;
- }
-
- if (sh.sm_v != 4 && sh.sm_v != 6) {
- if (ipf_sync_debug > 2)
- printf("uiomove(header) invalid %s\n",
- "protocol");
- return EINVAL;
- }
-
- if (sh.sm_cmd > SMC_MAXCMD) {
- if (ipf_sync_debug > 2)
- printf("uiomove(header) invalid %s\n",
- "command");
- return EINVAL;
- }
-
-
- if (sh.sm_table > SMC_MAXTBL) {
- if (ipf_sync_debug > 2)
- printf("uiomove(header) invalid %s\n",
- "table");
- return EINVAL;
- }
-
- } else {
- /* unsufficient data, wait until next call */
- if (ipf_sync_debug > 2)
- printf("uiomove(header) insufficient data");
- return EAGAIN;
- }
-
-
- /*
- * We have a header, so try to read the amount of data
- * needed for the request
- */
-
- /* not supported */
- if (sh.sm_len == 0) {
- if (ipf_sync_debug > 2)
- printf("uiomove(data zero length %s\n",
- "not supported");
- return EINVAL;
- }
-
- if (uio->uio_resid >= sh.sm_len) {
-
- err = UIOMOVE((caddr_t)data, sh.sm_len, UIO_WRITE, uio);
-
- if (err) {
- if (ipf_sync_debug > 2)
- printf("uiomove(data) failed: %d\n",
- err);
- return err;
- }
-
- if (ipf_sync_debug > 7)
- printf("uiomove(data) %d bytes read\n",
- sh.sm_len);
-
- if (sh.sm_table == SMC_STATE)
- err = ipfsync_state(&sh, data);
- else if (sh.sm_table == SMC_NAT)
- err = ipfsync_nat(&sh, data);
- if (ipf_sync_debug > 7)
- printf("[%d] Finished with error %d\n",
- sh.sm_num, err);
-
- } else {
- /* insufficient data, wait until next call */
- if (ipf_sync_debug > 2)
- printf("uiomove(data) %s %d bytes, got %d\n",
- "insufficient data, need",
- sh.sm_len, uio->uio_resid);
- return EAGAIN;
- }
- }
-
- /* no more data */
- return 0;
-}
-
-
-/* ------------------------------------------------------------------------ */
-/* Function: ipfsync_read */
-/* Returns: int - 0 == success, else error value. */
-/* Parameters: uio(O) - pointer to information about where to store data */
-/* */
-/* This function is called when a user program wants to read some data */
-/* for pending state/NAT updates. If no data is available, the caller is */
-/* put to sleep, pending a wakeup from the "lower half" of this code. */
-/* ------------------------------------------------------------------------ */
-int ipfsync_read(uio)
-struct uio *uio;
-{
- syncupdent_t *su;
- synclogent_t *sl;
- int err = 0;
-
- if ((uio->uio_resid & 3) || (uio->uio_resid < 8))
- return EINVAL;
-
-# if (BSD >= 199306) || defined(__FreeBSD__) || defined(__osf__)
- uio->uio_rw = UIO_READ;
-# endif
-
- MUTEX_ENTER(&ipsl_mutex);
- while ((sl_tail == sl_idx) && (su_tail == su_idx)) {
-# if SOLARIS && defined(_KERNEL)
- if (!cv_wait_sig(&ipslwait, &ipsl_mutex)) {
- MUTEX_EXIT(&ipsl_mutex);
- return EINTR;
- }
-# else
-# ifdef __hpux
- {
- lock_t *l;
-
- l = get_sleep_lock(&sl_tail);
- err = sleep(&sl_tail, PZERO+1);
- spinunlock(l);
- }
-# else /* __hpux */
-# ifdef __osf__
- err = mpsleep(&sl_tail, PSUSP|PCATCH, "ipl sleep", 0,
- &ipsl_mutex, MS_LOCK_SIMPLE);
-# else
- MUTEX_EXIT(&ipsl_mutex);
- err = SLEEP(&sl_tail, "ipl sleep");
-# endif /* __osf__ */
-# endif /* __hpux */
- if (err) {
- MUTEX_EXIT(&ipsl_mutex);
- return err;
- }
-# endif /* SOLARIS */
- }
- MUTEX_EXIT(&ipsl_mutex);
-
- READ_ENTER(&ipf_syncstate);
- while ((sl_tail < sl_idx) && (uio->uio_resid > sizeof(*sl))) {
- sl = synclog + sl_tail++;
- err = UIOMOVE((caddr_t)sl, sizeof(*sl), UIO_READ, uio);
- if (err != 0)
- break;
- }
-
- while ((su_tail < su_idx) && (uio->uio_resid > sizeof(*su))) {
- su = syncupd + su_tail;
- su_tail++;
- err = UIOMOVE((caddr_t)su, sizeof(*su), UIO_READ, uio);
- if (err != 0)
- break;
- if (su->sup_hdr.sm_sl != NULL)
- su->sup_hdr.sm_sl->sl_idx = -1;
- }
-
- MUTEX_ENTER(&ipf_syncadd);
- if (su_tail == su_idx)
- su_tail = su_idx = 0;
- if (sl_tail == sl_idx)
- sl_tail = sl_idx = 0;
- MUTEX_EXIT(&ipf_syncadd);
- RWLOCK_EXIT(&ipf_syncstate);
- return err;
-}
-
-
-/* ------------------------------------------------------------------------ */
-/* Function: ipfsync_state */
-/* Returns: int - 0 == success, else error value. */
-/* Parameters: sp(I) - pointer to sync packet data header */
-/* uio(I) - pointer to user data for further information */
-/* */
-/* Updates the state table according to information passed in the sync */
-/* header. As required, more data is fetched from the uio structure but */
-/* varies depending on the contents of the sync header. This function can */
-/* create a new state entry or update one. Deletion is left to the state */
-/* structures being timed out correctly. */
-/* ------------------------------------------------------------------------ */
-int ipfsync_state(sp, data)
-synchdr_t *sp;
-void *data;
-{
- synctcp_update_t su;
- ipstate_t *is, sn;
- synclist_t *sl;
- frentry_t *fr;
- u_int hv;
- int err = 0;
-
- hv = sp->sm_num & (SYNC_STATETABSZ - 1);
-
- switch (sp->sm_cmd)
- {
- case SMC_CREATE :
-
- bcopy(data, &sn, sizeof(sn));
- KMALLOC(is, ipstate_t *);
- if (is == NULL) {
- err = ENOMEM;
- break;
- }
-
- KMALLOC(sl, synclist_t *);
- if (sl == NULL) {
- err = ENOMEM;
- KFREE(is);
- break;
- }
-
- bzero((char *)is, offsetof(ipstate_t, is_die));
- bcopy((char *)&sn.is_die, (char *)&is->is_die,
- sizeof(*is) - offsetof(ipstate_t, is_die));
- ipfsync_storder(0, is);
-
- /*
- * We need to find the same rule on the slave as was used on
- * the master to create this state entry.
- */
- READ_ENTER(&ipf_mutex);
- fr = fr_getrulen(IPL_LOGIPF, sn.is_group, sn.is_rulen);
- if (fr != NULL) {
- MUTEX_ENTER(&fr->fr_lock);
- fr->fr_ref++;
- fr->fr_statecnt++;
- MUTEX_EXIT(&fr->fr_lock);
- }
- RWLOCK_EXIT(&ipf_mutex);
-
- if (ipf_sync_debug > 4)
- printf("[%d] Filter rules = %p\n", sp->sm_num, fr);
-
- is->is_rule = fr;
- is->is_sync = sl;
-
- sl->sl_idx = -1;
- sl->sl_ips = is;
- bcopy(sp, &sl->sl_hdr, sizeof(struct synchdr));
-
- WRITE_ENTER(&ipf_syncstate);
- WRITE_ENTER(&ipf_state);
-
- sl->sl_pnext = syncstatetab + hv;
- sl->sl_next = syncstatetab[hv];
- if (syncstatetab[hv] != NULL)
- syncstatetab[hv]->sl_pnext = &sl->sl_next;
- syncstatetab[hv] = sl;
- MUTEX_DOWNGRADE(&ipf_syncstate);
- fr_stinsert(is, sp->sm_rev);
- /*
- * Do not initialise the interface pointers for the state
- * entry as the full complement of interface names may not
- * be present.
- *
- * Put this state entry on its timeout queue.
- */
- /*fr_setstatequeue(is, sp->sm_rev);*/
- break;
-
- case SMC_UPDATE :
- bcopy(data, &su, sizeof(su));
-
- if (ipf_sync_debug > 4)
- printf("[%d] Update age %lu state %d/%d \n",
- sp->sm_num, su.stu_age, su.stu_state[0],
- su.stu_state[1]);
-
- READ_ENTER(&ipf_syncstate);
- for (sl = syncstatetab[hv]; (sl != NULL); sl = sl->sl_next)
- if (sl->sl_hdr.sm_num == sp->sm_num)
- break;
- if (sl == NULL) {
- if (ipf_sync_debug > 1)
- printf("[%d] State not found - can't update\n",
- sp->sm_num);
- RWLOCK_EXIT(&ipf_syncstate);
- err = ENOENT;
- break;
- }
-
- READ_ENTER(&ipf_state);
-
- if (ipf_sync_debug > 6)
- printf("[%d] Data from state v:%d p:%d cmd:%d table:%d rev:%d\n",
- sp->sm_num, sl->sl_hdr.sm_v, sl->sl_hdr.sm_p,
- sl->sl_hdr.sm_cmd, sl->sl_hdr.sm_table,
- sl->sl_hdr.sm_rev);
-
- is = sl->sl_ips;
-
- MUTEX_ENTER(&is->is_lock);
- switch (sp->sm_p)
- {
- case IPPROTO_TCP :
- /* XXX FV --- shouldn't we do ntohl/htonl???? XXX */
- is->is_send = su.stu_data[0].td_end;
- is->is_maxsend = su.stu_data[0].td_maxend;
- is->is_maxswin = su.stu_data[0].td_maxwin;
- is->is_state[0] = su.stu_state[0];
- is->is_dend = su.stu_data[1].td_end;
- is->is_maxdend = su.stu_data[1].td_maxend;
- is->is_maxdwin = su.stu_data[1].td_maxwin;
- is->is_state[1] = su.stu_state[1];
- break;
- default :
- break;
- }
-
- if (ipf_sync_debug > 6)
- printf("[%d] Setting timers for state\n", sp->sm_num);
-
- fr_setstatequeue(is, sp->sm_rev);
-
- MUTEX_EXIT(&is->is_lock);
- break;
-
- default :
- err = EINVAL;
- break;
- }
-
- if (err == 0) {
- RWLOCK_EXIT(&ipf_state);
- RWLOCK_EXIT(&ipf_syncstate);
- }
-
- if (ipf_sync_debug > 6)
- printf("[%d] Update completed with error %d\n",
- sp->sm_num, err);
-
- return err;
-}
-# endif /* _KERNEL */
-
-
-/* ------------------------------------------------------------------------ */
-/* Function: ipfsync_del */
-/* Returns: Nil */
-/* Parameters: sl(I) - pointer to synclist object to delete */
-/* */
-/* Deletes an object from the synclist table and free's its memory. */
-/* ------------------------------------------------------------------------ */
-void ipfsync_del(sl)
-synclist_t *sl;
-{
- WRITE_ENTER(&ipf_syncstate);
- *sl->sl_pnext = sl->sl_next;
- if (sl->sl_next != NULL)
- sl->sl_next->sl_pnext = sl->sl_pnext;
- if (sl->sl_idx != -1)
- syncupd[sl->sl_idx].sup_hdr.sm_sl = NULL;
- RWLOCK_EXIT(&ipf_syncstate);
- KFREE(sl);
-}
-
-
-/* ------------------------------------------------------------------------ */
-/* Function: ipfsync_nat */
-/* Returns: int - 0 == success, else error value. */
-/* Parameters: sp(I) - pointer to sync packet data header */
-/* uio(I) - pointer to user data for further information */
-/* */
-/* Updates the NAT table according to information passed in the sync */
-/* header. As required, more data is fetched from the uio structure but */
-/* varies depending on the contents of the sync header. This function can */
-/* create a new NAT entry or update one. Deletion is left to the NAT */
-/* structures being timed out correctly. */
-/* ------------------------------------------------------------------------ */
-int ipfsync_nat(sp, data)
-synchdr_t *sp;
-void *data;
-{
- synclogent_t sle;
- syncupdent_t su;
- nat_t *n, *nat;
- synclist_t *sl;
- u_int hv = 0;
- int err;
-
- READ_ENTER(&ipf_syncstate);
-
- switch (sp->sm_cmd)
- {
- case SMC_CREATE :
- bcopy(data, &sle, sizeof(sle));
-
- KMALLOC(n, nat_t *);
- if (n == NULL) {
- err = ENOMEM;
- break;
- }
-
- KMALLOC(sl, synclist_t *);
- if (sl == NULL) {
- err = ENOMEM;
- KFREE(n);
- break;
- }
-
- WRITE_ENTER(&ipf_nat);
-
- nat = &sle.sle_un.sleu_ipn;
- bzero((char *)n, offsetof(nat_t, nat_age));
- bcopy((char *)&nat->nat_age, (char *)&n->nat_age,
- sizeof(*n) - offsetof(nat_t, nat_age));
- ipfsync_natorder(0, n);
- n->nat_sync = sl;
-
- sl->sl_idx = -1;
- sl->sl_ipn = n;
- sl->sl_num = ntohl(sp->sm_num);
- sl->sl_pnext = syncstatetab + hv;
- sl->sl_next = syncstatetab[hv];
- if (syncstatetab[hv] != NULL)
- syncstatetab[hv]->sl_pnext = &sl->sl_next;
- syncstatetab[hv] = sl;
- nat_insert(n, sl->sl_rev);
- RWLOCK_EXIT(&ipf_nat);
- break;
-
- case SMC_UPDATE :
- bcopy(data, &su, sizeof(su));
-
- READ_ENTER(&ipf_syncstate);
- for (sl = syncstatetab[hv]; (sl != NULL); sl = sl->sl_next)
- if (sl->sl_hdr.sm_num == sp->sm_num)
- break;
- if (sl == NULL) {
- err = ENOENT;
- break;
- }
-
- READ_ENTER(&ipf_nat);
-
- nat = sl->sl_ipn;
-
- MUTEX_ENTER(&nat->nat_lock);
- fr_setnatqueue(nat, sl->sl_rev);
- MUTEX_EXIT(&nat->nat_lock);
-
- RWLOCK_EXIT(&ipf_nat);
-
- break;
-
- default :
- err = EINVAL;
- break;
- }
-
- RWLOCK_EXIT(&ipf_syncstate);
- return 0;
-}
-
-
-/* ------------------------------------------------------------------------ */
-/* Function: ipfsync_new */
-/* Returns: synclist_t* - NULL == failure, else pointer to new synclist */
-/* data structure. */
-/* Parameters: tab(I) - type of synclist_t to create */
-/* fin(I) - pointer to packet information */
-/* ptr(I) - pointer to owning object */
-/* */
-/* Creates a new sync table entry and notifies any sleepers that it's there */
-/* waiting to be processed. */
-/* ------------------------------------------------------------------------ */
-synclist_t *ipfsync_new(tab, fin, ptr)
-int tab;
-fr_info_t *fin;
-void *ptr;
-{
- synclist_t *sl, *ss;
- synclogent_t *sle;
- u_int hv, sz;
-
- if (sl_idx == SYNCLOG_SZ)
- return NULL;
- KMALLOC(sl, synclist_t *);
- if (sl == NULL)
- return NULL;
-
- MUTEX_ENTER(&ipf_syncadd);
- /*
- * Get a unique number for this synclist_t. The number is only meant
- * to be unique for the lifetime of the structure and may be reused
- * later.
- */
- ipf_syncnum++;
- if (ipf_syncnum == 0) {
- ipf_syncnum = 1;
- ipf_syncwrap = 1;
- }
-
- hv = ipf_syncnum & (SYNC_STATETABSZ - 1);
- while (ipf_syncwrap != 0) {
- for (ss = syncstatetab[hv]; ss; ss = ss->sl_next)
- if (ss->sl_hdr.sm_num == ipf_syncnum)
- break;
- if (ss == NULL)
- break;
- ipf_syncnum++;
- hv = ipf_syncnum & (SYNC_STATETABSZ - 1);
- }
- /*
- * Use the synch number of the object as the hash key. Should end up
- * with relatively even distribution over time.
- * XXX - an attacker could lunch an DoS attack, of sorts, if they are
- * the only one causing new table entries by only keeping open every
- * nth connection they make, where n is a value in the interval
- * [0, SYNC_STATETABSZ-1].
- */
- sl->sl_pnext = syncstatetab + hv;
- sl->sl_next = syncstatetab[hv];
- syncstatetab[hv] = sl;
- sl->sl_num = ipf_syncnum;
- MUTEX_EXIT(&ipf_syncadd);
-
- sl->sl_magic = htonl(SYNHDRMAGIC);
- sl->sl_v = fin->fin_v;
- sl->sl_p = fin->fin_p;
- sl->sl_cmd = SMC_CREATE;
- sl->sl_idx = -1;
- sl->sl_table = tab;
- sl->sl_rev = fin->fin_rev;
- if (tab == SMC_STATE) {
- sl->sl_ips = ptr;
- sz = sizeof(*sl->sl_ips);
- } else if (tab == SMC_NAT) {
- sl->sl_ipn = ptr;
- sz = sizeof(*sl->sl_ipn);
- } else {
- ptr = NULL;
- sz = 0;
- }
- sl->sl_len = sz;
-
- /*
- * Create the log entry to be read by a user daemon. When it has been
- * finished and put on the queue, send a signal to wakeup any waiters.
- */
- MUTEX_ENTER(&ipf_syncadd);
- sle = synclog + sl_idx++;
- bcopy((char *)&sl->sl_hdr, (char *)&sle->sle_hdr,
- sizeof(sle->sle_hdr));
- sle->sle_hdr.sm_num = htonl(sle->sle_hdr.sm_num);
- sle->sle_hdr.sm_len = htonl(sle->sle_hdr.sm_len);
- if (ptr != NULL) {
- bcopy((char *)ptr, (char *)&sle->sle_un, sz);
- if (tab == SMC_STATE) {
- ipfsync_storder(1, &sle->sle_un.sleu_ips);
- } else if (tab == SMC_NAT) {
- ipfsync_natorder(1, &sle->sle_un.sleu_ipn);
- }
- }
- MUTEX_EXIT(&ipf_syncadd);
-
- MUTEX_ENTER(&ipsl_mutex);
-# if SOLARIS
-# ifdef _KERNEL
- cv_signal(&ipslwait);
-# endif
- MUTEX_EXIT(&ipsl_mutex);
-# else
- MUTEX_EXIT(&ipsl_mutex);
-# ifdef _KERNEL
- wakeup(&sl_tail);
-# endif
-# endif
- return sl;
-}
-
-
-/* ------------------------------------------------------------------------ */
-/* Function: ipfsync_update */
-/* Returns: Nil */
-/* Parameters: tab(I) - type of synclist_t to create */
-/* fin(I) - pointer to packet information */
-/* sl(I) - pointer to synchronisation object */
-/* */
-/* For outbound packets, only, create an sync update record for the user */
-/* process to read. */
-/* ------------------------------------------------------------------------ */
-void ipfsync_update(tab, fin, sl)
-int tab;
-fr_info_t *fin;
-synclist_t *sl;
-{
- synctcp_update_t *st;
- syncupdent_t *slu;
- ipstate_t *ips;
- nat_t *nat;
-
- if (fin->fin_out == 0 || sl == NULL)
- return;
-
- WRITE_ENTER(&ipf_syncstate);
- MUTEX_ENTER(&ipf_syncadd);
- if (sl->sl_idx == -1) {
- slu = syncupd + su_idx;
- sl->sl_idx = su_idx++;
- bcopy((char *)&sl->sl_hdr, (char *)&slu->sup_hdr,
- sizeof(slu->sup_hdr));
- slu->sup_hdr.sm_magic = htonl(SYNHDRMAGIC);
- slu->sup_hdr.sm_sl = sl;
- slu->sup_hdr.sm_cmd = SMC_UPDATE;
- slu->sup_hdr.sm_table = tab;
- slu->sup_hdr.sm_num = htonl(sl->sl_num);
- slu->sup_hdr.sm_len = htonl(sizeof(struct synctcp_update));
- slu->sup_hdr.sm_rev = fin->fin_rev;
-# if 0
- if (fin->fin_p == IPPROTO_TCP) {
- st->stu_len[0] = 0;
- st->stu_len[1] = 0;
- }
-# endif
- } else
- slu = syncupd + sl->sl_idx;
- MUTEX_EXIT(&ipf_syncadd);
- MUTEX_DOWNGRADE(&ipf_syncstate);
-
- /*
- * Only TCP has complex timeouts, others just use default timeouts.
- * For TCP, we only need to track the connection state and window.
- */
- if (fin->fin_p == IPPROTO_TCP) {
- st = &slu->sup_tcp;
- if (tab == SMC_STATE) {
- ips = sl->sl_ips;
- st->stu_age = htonl(ips->is_die);
- st->stu_data[0].td_end = ips->is_send;
- st->stu_data[0].td_maxend = ips->is_maxsend;
- st->stu_data[0].td_maxwin = ips->is_maxswin;
- st->stu_state[0] = ips->is_state[0];
- st->stu_data[1].td_end = ips->is_dend;
- st->stu_data[1].td_maxend = ips->is_maxdend;
- st->stu_data[1].td_maxwin = ips->is_maxdwin;
- st->stu_state[1] = ips->is_state[1];
- } else if (tab == SMC_NAT) {
- nat = sl->sl_ipn;
- st->stu_age = htonl(nat->nat_age);
- }
- }
- RWLOCK_EXIT(&ipf_syncstate);
-
- MUTEX_ENTER(&ipsl_mutex);
-# if SOLARIS
-# ifdef _KERNEL
- cv_signal(&ipslwait);
-# endif
- MUTEX_EXIT(&ipsl_mutex);
-# else
- MUTEX_EXIT(&ipsl_mutex);
-# ifdef _KERNEL
- wakeup(&sl_tail);
-# endif
-# endif
-}
-
-
-/* ------------------------------------------------------------------------ */
-/* Function: fr_sync_ioctl */
-/* Returns: int - 0 == success, != 0 == failure */
-/* Parameters: data(I) - pointer to ioctl data */
-/* cmd(I) - ioctl command integer */
-/* mode(I) - file mode bits used with open */
-/* */
-/* This function currently does not handle any ioctls and so just returns */
-/* EINVAL on all occasions. */
-/* ------------------------------------------------------------------------ */
-int fr_sync_ioctl(data, cmd, mode)
-caddr_t data;
-ioctlcmd_t cmd;
-int mode;
-{
- return EINVAL;
-}
-#endif /* IPFILTER_SYNC */
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