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Differential D30283 Diff 89899 sys/netinet/libalias/alias_db.c

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sys/netinet/libalias/alias_db.c

Show First 20 Lines • Show All 214 Lines • ▼ Show 20 Lines
/* Dummy port number codes used for FindLinkIn/Out() and AddLink(). /* Dummy port number codes used for FindLinkIn/Out() and AddLink().
These constants can be anything except zero, which indicates an These constants can be anything except zero, which indicates an
unknown port number. */ unknown port number. */
#define NO_DEST_PORT 1 #define NO_DEST_PORT 1
#define NO_SRC_PORT 1 #define NO_SRC_PORT 1
/* Dummy address used for FindLinkIn/Out() and AddLink(). /* Matches any/unknown address in FindLinkIn/Out() and AddLink(). */
The value of this variable is never used. */ static struct in_addr const ANY_ADDR = { INADDR_ANY };
static struct in_addr const NO_ADDR;
/* Data Structures /* Data Structures
The fundamental data structure used in this program is The fundamental data structure used in this program is
"struct alias_link". Whenever a TCP connection is made, "struct alias_link". Whenever a TCP connection is made,
a UDP datagram is sent out, or an ICMP echo request is made, a UDP datagram is sent out, or an ICMP echo request is made,
a link record is made (if it has not already been created). a link record is made (if it has not already been created).
The link record is identified by the source address/port The link record is identified by the source address/port
▲ Show 20 Lines • Show All 164 Lines • ▼ Show 20 Lines
/* Log file control */ /* Log file control */
static void ShowAliasStats(struct libalias *); static void ShowAliasStats(struct libalias *);
static int InitPacketAliasLog(struct libalias *); static int InitPacketAliasLog(struct libalias *);
static void UninitPacketAliasLog(struct libalias *); static void UninitPacketAliasLog(struct libalias *);
void SctpShowAliasStats(struct libalias *la); void SctpShowAliasStats(struct libalias *la);
static u_int static u_int
StartPartialIn(u_short alias_port, int link_type)
{
return (link_type == LINK_PPTP) ? 0
: (alias_port % LINK_PARTIAL_SIZE);
}
static u_int
StartPointIn(struct in_addr alias_addr, StartPointIn(struct in_addr alias_addr,
u_short alias_port, u_short alias_port,
int link_type) int link_type)
{ {
u_int n; u_int n;
n = alias_addr.s_addr; n = alias_addr.s_addr;
if (link_type != LINK_PPTP) if (link_type != LINK_PPTP)
▲ Show 20 Lines • Show All 414 Lines • ▼ Show 20 Lines if ((*lnk) == NULL)
return; return;
} }
/* move to end, swap may fail on a single entry list */ /* move to end, swap may fail on a single entry list */
TAILQ_REMOVE(&la->checkExpire, (*lnk), list_expire); TAILQ_REMOVE(&la->checkExpire, (*lnk), list_expire);
TAILQ_INSERT_TAIL(&la->checkExpire, (*lnk), list_expire); TAILQ_INSERT_TAIL(&la->checkExpire, (*lnk), list_expire);
} }
static inline struct alias_link *
UseLink(struct libalias *la, struct alias_link *lnk)
{
CleanupLink(la, &lnk);
if (lnk != NULL)
lnk->timestamp = LibAliasTime;
return (lnk);
}
static void static void
DeleteLink(struct alias_link **plnk) DeleteLink(struct alias_link **plnk)
{ {
struct alias_link *lnk = *plnk; struct alias_link *lnk = *plnk;
struct libalias *la = lnk->la; struct libalias *la = lnk->la;
LIBALIAS_LOCK_ASSERT(la); LIBALIAS_LOCK_ASSERT(la);
/* Don't do anything if the link is marked permanent */ /* Don't do anything if the link is marked permanent */
▲ Show 20 Lines • Show All 188 Lines • ▼ Show 20 Lines#endif
} }
/* Set up pointers for output lookup table */ /* Set up pointers for output lookup table */
start_point = StartPointOut(src_addr, dst_addr, start_point = StartPointOut(src_addr, dst_addr,
src_port, dst_port, link_type); src_port, dst_port, link_type);
LIST_INSERT_HEAD(&la->linkTableOut[start_point], lnk, list_out); LIST_INSERT_HEAD(&la->linkTableOut[start_point], lnk, list_out);
/* Set up pointers for input lookup table */ /* Set up pointers for input lookup table */
if (lnk->flags & LINK_PARTIALLY_SPECIFIED) {
start_point = StartPartialIn(lnk->alias_port, link_type);
LIST_INSERT_HEAD(&la->linkPartialIn[start_point], lnk, list_in);
} else {
start_point = StartPointIn(alias_addr, lnk->alias_port, link_type); start_point = StartPointIn(alias_addr, lnk->alias_port, link_type);
LIST_INSERT_HEAD(&la->linkTableIn[start_point], lnk, list_in); LIST_INSERT_HEAD(&la->linkTableIn[start_point], lnk, list_in);
}
/* Include the element into the housekeeping list */ /* Include the element into the housekeeping list */
TAILQ_INSERT_TAIL(&la->checkExpire, lnk, list_expire); TAILQ_INSERT_TAIL(&la->checkExpire, lnk, list_expire);
} else { } else {
#ifdef LIBALIAS_DEBUG #ifdef LIBALIAS_DEBUG
fprintf(stderr, "PacketAlias/AddLink(): "); fprintf(stderr, "PacketAlias/AddLink(): ");
fprintf(stderr, "malloc() call failed.\n"); fprintf(stderr, "malloc() call failed.\n");
#endif #endif
Show All 31 Lines if (new_lnk != NULL &&
old_lnk->data.tcp->fwhole > 0) { old_lnk->data.tcp->fwhole > 0) {
PunchFWHole(new_lnk); PunchFWHole(new_lnk);
} }
#endif #endif
DeleteLink(&old_lnk); DeleteLink(&old_lnk);
return (new_lnk); return (new_lnk);
} }
#define OUTGUARD \
if (lnk->src_port != src_port || \
lnk->src_addr.s_addr != src_addr.s_addr || \
lnk->dst_addr.s_addr != dst_addr.s_addr || \
lnk->dst_port != dst_port || \
lnk->link_type != link_type || \
lnk->server != NULL) \
continue;
static struct alias_link * static struct alias_link *
_FindLinkOut(struct libalias *la, struct in_addr src_addr, _SearchLinkOut(struct libalias *la, struct in_addr src_addr,
struct in_addr dst_addr, struct in_addr dst_addr,
u_short src_port, u_short src_port,
u_short dst_port, u_short dst_port,
int link_type, int link_type) {
int replace_partial_links)
{
u_int i; u_int i;
struct alias_link *lnk; struct alias_link *lnk;
LIBALIAS_LOCK_ASSERT(la);
i = StartPointOut(src_addr, dst_addr, src_port, dst_port, link_type); i = StartPointOut(src_addr, dst_addr, src_port, dst_port, link_type);
LIST_FOREACH(lnk, &la->linkTableOut[i], list_out) { LIST_FOREACH(lnk, &la->linkTableOut[i], list_out) {
if (lnk->dst_addr.s_addr == dst_addr.s_addr && OUTGUARD;
lnk->src_addr.s_addr == src_addr.s_addr && return (UseLink(la, lnk));
lnk->src_port == src_port &&
lnk->dst_port == dst_port &&
lnk->link_type == link_type &&
lnk->server == NULL)
break;
} }
CleanupLink(la, &lnk); return (NULL);
if (lnk != NULL) }
lnk->timestamp = LibAliasTime;
#undef OUTGUARD
static struct alias_link *
_FindLinkOut(struct libalias *la, struct in_addr src_addr,
struct in_addr dst_addr,
u_short src_port,
u_short dst_port,
int link_type,
int replace_partial_links)
{
struct alias_link *lnk;
LIBALIAS_LOCK_ASSERT(la);
lnk = _SearchLinkOut(la, src_addr, dst_addr, src_port, dst_port, link_type);
/* Search for partially specified links. */ /* Search for partially specified links. */
if (lnk == NULL && replace_partial_links) { if (lnk == NULL && replace_partial_links) {
if (dst_port != 0 && dst_addr.s_addr != INADDR_ANY) { if (dst_port != 0 && dst_addr.s_addr != INADDR_ANY) {
lnk = _FindLinkOut(la, src_addr, dst_addr, src_port, 0, lnk = _SearchLinkOut(la, src_addr, dst_addr, src_port, 0,
link_type, 0); link_type);
if (lnk == NULL) if (lnk == NULL)
lnk = _FindLinkOut(la, src_addr, NO_ADDR, src_port, lnk = _SearchLinkOut(la, src_addr, ANY_ADDR, src_port,
dst_port, link_type, 0); dst_port, link_type);
} }
if (lnk == NULL && if (lnk == NULL &&
(dst_port != 0 || dst_addr.s_addr != INADDR_ANY)) { (dst_port != 0 || dst_addr.s_addr != INADDR_ANY)) {
lnk = _FindLinkOut(la, src_addr, NO_ADDR, src_port, 0, lnk = _SearchLinkOut(la, src_addr, ANY_ADDR, src_port, 0,
link_type, 0); link_type);
} }
if (lnk != NULL) { if (lnk != NULL) {
lnk = ReLink(lnk, lnk = ReLink(lnk,
src_addr, dst_addr, lnk->alias_addr, src_addr, dst_addr, lnk->alias_addr,
src_port, dst_port, lnk->alias_port, src_port, dst_port, lnk->alias_port,
link_type); link_type);
} }
} }
Show All 18 Lines if (lnk == NULL) {
/* /*
* The following allows permanent links to be specified as * The following allows permanent links to be specified as
* using the default source address (i.e. device interface * using the default source address (i.e. device interface
* address) without knowing in advance what that address * address) without knowing in advance what that address
* is. * is.
*/ */
if (la->aliasAddress.s_addr != INADDR_ANY && if (la->aliasAddress.s_addr != INADDR_ANY &&
src_addr.s_addr == la->aliasAddress.s_addr) { src_addr.s_addr == la->aliasAddress.s_addr) {
lnk = _FindLinkOut(la, NO_ADDR, dst_addr, src_port, dst_port, lnk = _FindLinkOut(la, ANY_ADDR, dst_addr, src_port, dst_port,
link_type, replace_partial_links); link_type, replace_partial_links);
} }
} }
return (lnk); return (lnk);
} }
static struct alias_link * static struct alias_link *
_FindLinkIn(struct libalias *la, struct in_addr dst_addr, _FindLinkIn(struct libalias *la, struct in_addr dst_addr,
struct in_addr alias_addr, struct in_addr alias_addr,
u_short dst_port, u_short dst_port,
u_short alias_port, u_short alias_port,
int link_type, int link_type,
int replace_partial_links) int replace_partial_links)
{ {
int flags_in; int flags_in;
u_int start_point; u_int start_point;
struct alias_link *lnk; struct alias_link *lnk;
struct alias_link *lnk_fully_specified; struct alias_link *lnk_fully_specified;
struct alias_link *lnk_unknown_all; struct alias_link *lnk_unknown_all;
struct alias_link *lnk_unknown_dst_addr; struct alias_link *lnk_unknown_dst_addr;
struct alias_link *lnk_unknown_dst_port; struct alias_link *lnk_unknown_dst_port;
struct in_addr src_addr;
u_short src_port;
LIBALIAS_LOCK_ASSERT(la); LIBALIAS_LOCK_ASSERT(la);
/* Initialize pointers */ /* Initialize pointers */
lnk_fully_specified = NULL; lnk_fully_specified = NULL;
lnk_unknown_all = NULL; lnk_unknown_all = NULL;
lnk_unknown_dst_addr = NULL; lnk_unknown_dst_addr = NULL;
lnk_unknown_dst_port = NULL; lnk_unknown_dst_port = NULL;
/* If either the dest addr or port is unknown, the search /* If either the dest addr or port is unknown, the search
* loop will have to know about this. */ * loop will have to know about this. */
flags_in = 0; flags_in = 0;
if (dst_addr.s_addr == INADDR_ANY) if (dst_addr.s_addr == INADDR_ANY)
flags_in |= LINK_UNKNOWN_DEST_ADDR; flags_in |= LINK_UNKNOWN_DEST_ADDR;
if (dst_port == 0) if (dst_port == 0)
flags_in |= LINK_UNKNOWN_DEST_PORT; flags_in |= LINK_UNKNOWN_DEST_PORT;
#define INGUARD \
if (lnk->alias_port != alias_port || \
lnk->link_type != link_type || \
lnk->alias_addr.s_addr != alias_addr.s_addr) \
continue;
/* Search loop */ /* Search loop */
start_point = StartPointIn(alias_addr, alias_port, link_type); start_point = StartPointIn(alias_addr, alias_port, link_type);
switch (flags_in) {
case 0:
LIST_FOREACH(lnk, &la->linkTableIn[start_point], list_in) { LIST_FOREACH(lnk, &la->linkTableIn[start_point], list_in) {
int flags; INGUARD;
if (lnk->dst_addr.s_addr == dst_addr.s_addr &&
flags = flags_in | lnk->flags; lnk->dst_port == dst_port)
if (!(flags & LINK_PARTIALLY_SPECIFIED)) { return (UseLink(la, lnk));
if (lnk->alias_addr.s_addr == alias_addr.s_addr }
&& lnk->alias_port == alias_port
&& lnk->dst_addr.s_addr == dst_addr.s_addr
&& lnk->dst_port == dst_port
&& lnk->link_type == link_type) {
lnk_fully_specified = lnk;
break; break;
case LINK_UNKNOWN_DEST_PORT:
LIST_FOREACH(lnk, &la->linkTableIn[start_point], list_in) {
INGUARD;
if(lnk->dst_addr.s_addr == dst_addr.s_addr) {
lnk_unknown_dst_port = lnk;
break;
} }
} else if ((flags & LINK_UNKNOWN_DEST_ADDR)
&& (flags & LINK_UNKNOWN_DEST_PORT)) {
if (lnk->alias_addr.s_addr == alias_addr.s_addr
&& lnk->alias_port == alias_port
&& lnk->link_type == link_type) {
if (lnk_unknown_all == NULL)
lnk_unknown_all = lnk;
} }
} else if (flags & LINK_UNKNOWN_DEST_ADDR) { break;
if (lnk->alias_addr.s_addr == alias_addr.s_addr case LINK_UNKNOWN_DEST_ADDR:
&& lnk->alias_port == alias_port LIST_FOREACH(lnk, &la->linkTableIn[start_point], list_in) {
&& lnk->link_type == link_type INGUARD;
&& lnk->dst_port == dst_port) { if(lnk->dst_port == dst_port) {
if (lnk_unknown_dst_addr == NULL)
lnk_unknown_dst_addr = lnk; lnk_unknown_dst_addr = lnk;
break;
} }
} else if (flags & LINK_UNKNOWN_DEST_PORT) { }
if (lnk->alias_addr.s_addr == alias_addr.s_addr break;
&& lnk->alias_port == alias_port case LINK_PARTIALLY_SPECIFIED:
&& lnk->link_type == link_type LIST_FOREACH(lnk, &la->linkTableIn[start_point], list_in) {
&& lnk->dst_addr.s_addr == dst_addr.s_addr) { INGUARD;
if (lnk_unknown_dst_port == NULL) lnk_unknown_all = lnk;
break;
}
break;
}
if (lnk_unknown_dst_port == NULL) {
start_point = StartPartialIn(alias_port, link_type);
LIST_FOREACH(lnk, &la->linkPartialIn[start_point], list_in) {
int flags = (flags_in | lnk->flags) & LINK_PARTIALLY_SPECIFIED;
INGUARD;
if (flags == LINK_PARTIALLY_SPECIFIED &&
lnk_unknown_all == NULL)
lnk_unknown_all = lnk;
if (flags == LINK_UNKNOWN_DEST_ADDR &&
lnk->dst_port == dst_port &&
lnk_unknown_dst_addr == NULL)
lnk_unknown_dst_addr = lnk;
if (flags == LINK_UNKNOWN_DEST_PORT &&
lnk->dst_addr.s_addr == dst_addr.s_addr) {
lnk_unknown_dst_port = lnk; lnk_unknown_dst_port = lnk;
break;
} }
} }
} }
#undef INGUARD
CleanupLink(la, &lnk_fully_specified); lnk = (lnk_unknown_dst_port != NULL) ? lnk_unknown_dst_port
if (lnk_fully_specified != NULL) { : (lnk_unknown_dst_addr != NULL) ? lnk_unknown_dst_addr
lnk_fully_specified->timestamp = LibAliasTime; : lnk_unknown_all;
lnk = lnk_fully_specified;
} else if (lnk_unknown_dst_port != NULL)
lnk = lnk_unknown_dst_port;
else if (lnk_unknown_dst_addr != NULL)
lnk = lnk_unknown_dst_addr;
else if (lnk_unknown_all != NULL)
lnk = lnk_unknown_all;
else
return (NULL);
if (replace_partial_links && if (lnk == NULL || !replace_partial_links)
(lnk->flags & LINK_PARTIALLY_SPECIFIED || lnk->server != NULL)) { return (lnk);
struct in_addr src_addr;
u_short src_port;
if (lnk->server != NULL) { /* LSNAT link */ if (lnk->server != NULL) { /* LSNAT link */
src_addr = lnk->server->addr; src_addr = lnk->server->addr;
src_port = lnk->server->port; src_port = lnk->server->port;
lnk->server = lnk->server->next; lnk->server = lnk->server->next;
} else { } else {
src_addr = lnk->src_addr; src_addr = lnk->src_addr;
src_port = lnk->src_port; src_port = lnk->src_port;
} }
if (link_type == LINK_SCTP) { if (link_type == LINK_SCTP) {
lnk->src_addr = src_addr; lnk->src_addr = src_addr;
lnk->src_port = src_port; lnk->src_port = src_port;
return (lnk); } else {
}
lnk = ReLink(lnk, lnk = ReLink(lnk,
src_addr, dst_addr, alias_addr, src_addr, dst_addr, alias_addr,
src_port, dst_port, alias_port, src_port, dst_port, alias_port,
link_type); link_type);
} }
return (lnk); return (lnk);
} }
Show All 15 Lines if (lnk == NULL) {
/* /*
* The following allows permanent links to be specified as * The following allows permanent links to be specified as
* using the default aliasing address (i.e. device * using the default aliasing address (i.e. device
* interface address) without knowing in advance what that * interface address) without knowing in advance what that
* address is. * address is.
*/ */
if (la->aliasAddress.s_addr != INADDR_ANY && if (la->aliasAddress.s_addr != INADDR_ANY &&
alias_addr.s_addr == la->aliasAddress.s_addr) { alias_addr.s_addr == la->aliasAddress.s_addr) {
lnk = _FindLinkIn(la, dst_addr, NO_ADDR, dst_port, alias_port, lnk = _FindLinkIn(la, dst_addr, ANY_ADDR, dst_port, alias_port,
link_type, replace_partial_links); link_type, replace_partial_links);
} }
} }
return (lnk); return (lnk);
} }
/* External routines for finding/adding links /* External routines for finding/adding links
▲ Show 20 Lines • Show All 65 Lines • ▼ Show 20 LinesFindFragmentIn1(struct libalias *la, struct in_addr dst_addr,
struct alias_link *lnk; struct alias_link *lnk;
LIBALIAS_LOCK_ASSERT(la); LIBALIAS_LOCK_ASSERT(la);
lnk = FindLinkIn(la, dst_addr, alias_addr, lnk = FindLinkIn(la, dst_addr, alias_addr,
NO_DEST_PORT, ip_id, NO_DEST_PORT, ip_id,
LINK_FRAGMENT_ID, 0); LINK_FRAGMENT_ID, 0);
if (lnk == NULL) { if (lnk == NULL) {
lnk = AddLink(la, NO_ADDR, dst_addr, alias_addr, lnk = AddLink(la, ANY_ADDR, dst_addr, alias_addr,
NO_SRC_PORT, NO_DEST_PORT, ip_id, NO_SRC_PORT, NO_DEST_PORT, ip_id,
LINK_FRAGMENT_ID); LINK_FRAGMENT_ID);
} }
return (lnk); return (lnk);
} }
/* Doesn't add a link if one is not found. */ /* Doesn't add a link if one is not found. */
struct alias_link * struct alias_link *
FindFragmentIn2(struct libalias *la, struct in_addr dst_addr, FindFragmentIn2(struct libalias *la, struct in_addr dst_addr,
struct in_addr alias_addr, u_short ip_id) struct in_addr alias_addr, u_short ip_id)
{ {
LIBALIAS_LOCK_ASSERT(la); LIBALIAS_LOCK_ASSERT(la);
return FindLinkIn(la, dst_addr, alias_addr, return FindLinkIn(la, dst_addr, alias_addr,
NO_DEST_PORT, ip_id, NO_DEST_PORT, ip_id,
LINK_FRAGMENT_ID, 0); LINK_FRAGMENT_ID, 0);
} }
struct alias_link * struct alias_link *
AddFragmentPtrLink(struct libalias *la, struct in_addr dst_addr, AddFragmentPtrLink(struct libalias *la, struct in_addr dst_addr,
u_short ip_id) u_short ip_id)
{ {
LIBALIAS_LOCK_ASSERT(la); LIBALIAS_LOCK_ASSERT(la);
return AddLink(la, NO_ADDR, dst_addr, NO_ADDR, return AddLink(la, ANY_ADDR, dst_addr, ANY_ADDR,
NO_SRC_PORT, NO_DEST_PORT, ip_id, NO_SRC_PORT, NO_DEST_PORT, ip_id,
LINK_FRAGMENT_PTR); LINK_FRAGMENT_PTR);
} }
struct alias_link * struct alias_link *
FindFragmentPtr(struct libalias *la, struct in_addr dst_addr, FindFragmentPtr(struct libalias *la, struct in_addr dst_addr,
u_short ip_id) u_short ip_id)
{ {
LIBALIAS_LOCK_ASSERT(la); LIBALIAS_LOCK_ASSERT(la);
return FindLinkIn(la, dst_addr, NO_ADDR, return FindLinkIn(la, dst_addr, ANY_ADDR,
NO_DEST_PORT, ip_id, NO_DEST_PORT, ip_id,
LINK_FRAGMENT_PTR, 0); LINK_FRAGMENT_PTR, 0);
} }
struct alias_link * struct alias_link *
FindProtoIn(struct libalias *la, struct in_addr dst_addr, FindProtoIn(struct libalias *la, struct in_addr dst_addr,
struct in_addr alias_addr, struct in_addr alias_addr,
u_char proto) u_char proto)
▲ Show 20 Lines • Show All 173 Lines • ▼ Show 20 LinesFindPptpOutByPeerCallId(struct libalias *la, struct in_addr src_addr,
return (lnk); return (lnk);
} }
struct alias_link * struct alias_link *
FindPptpInByCallId(struct libalias *la, struct in_addr dst_addr, FindPptpInByCallId(struct libalias *la, struct in_addr dst_addr,
struct in_addr alias_addr, struct in_addr alias_addr,
u_int16_t dst_call_id) u_int16_t dst_call_id)
{ {
u_int i;
struct alias_link *lnk; struct alias_link *lnk;
LIBALIAS_LOCK_ASSERT(la); LIBALIAS_LOCK_ASSERT(la);
i = StartPointIn(alias_addr, 0, LINK_PPTP); LIST_FOREACH(lnk, &la->linkPartialIn[0], list_in)
LIST_FOREACH(lnk, &la->linkTableIn[i], list_in)
if (lnk->link_type == LINK_PPTP && if (lnk->link_type == LINK_PPTP &&
lnk->dst_addr.s_addr == dst_addr.s_addr && lnk->dst_addr.s_addr == dst_addr.s_addr &&
lnk->alias_addr.s_addr == alias_addr.s_addr && lnk->alias_addr.s_addr == alias_addr.s_addr &&
lnk->dst_port == dst_call_id) lnk->dst_port == dst_call_id)
break; break;
CleanupLink(la, &lnk); CleanupLink(la, &lnk);
return (lnk); return (lnk);
▲ Show 20 Lines • Show All 51 Lines • ▼ Show 20 Lines
} }
struct in_addr struct in_addr
FindOriginalAddress(struct libalias *la, struct in_addr alias_addr) FindOriginalAddress(struct libalias *la, struct in_addr alias_addr)
{ {
struct alias_link *lnk; struct alias_link *lnk;
LIBALIAS_LOCK_ASSERT(la); LIBALIAS_LOCK_ASSERT(la);
lnk = FindLinkIn(la, NO_ADDR, alias_addr, lnk = FindLinkIn(la, ANY_ADDR, alias_addr,
0, 0, LINK_ADDR, 0); 0, 0, LINK_ADDR, 0);
if (lnk == NULL) { if (lnk == NULL) {
la->newDefaultLink = 1; la->newDefaultLink = 1;
if (la->targetAddress.s_addr == INADDR_ANY) if (la->targetAddress.s_addr == INADDR_ANY)
return (alias_addr); return (alias_addr);
else if (la->targetAddress.s_addr == INADDR_NONE) else if (la->targetAddress.s_addr == INADDR_NONE)
return (la->aliasAddress.s_addr != INADDR_ANY) ? return (la->aliasAddress.s_addr != INADDR_ANY) ?
la->aliasAddress : alias_addr; la->aliasAddress : alias_addr;
Show All 15 Lines
} }
struct in_addr struct in_addr
FindAliasAddress(struct libalias *la, struct in_addr original_addr) FindAliasAddress(struct libalias *la, struct in_addr original_addr)
{ {
struct alias_link *lnk; struct alias_link *lnk;
LIBALIAS_LOCK_ASSERT(la); LIBALIAS_LOCK_ASSERT(la);
lnk = FindLinkOut(la, original_addr, NO_ADDR, lnk = FindLinkOut(la, original_addr, ANY_ADDR,
0, 0, LINK_ADDR, 0); 0, 0, LINK_ADDR, 0);
if (lnk == NULL) { if (lnk == NULL) {
return (la->aliasAddress.s_addr != INADDR_ANY) ? return (la->aliasAddress.s_addr != INADDR_ANY) ?
la->aliasAddress : original_addr; la->aliasAddress : original_addr;
} else { } else {
if (lnk->alias_addr.s_addr == INADDR_ANY) if (lnk->alias_addr.s_addr == INADDR_ANY)
return (la->aliasAddress.s_addr != INADDR_ANY) ? return (la->aliasAddress.s_addr != INADDR_ANY) ?
la->aliasAddress : original_addr; la->aliasAddress : original_addr;
▲ Show 20 Lines • Show All 591 Lines • ▼ Show 20 Lines
/* Static address translation */ /* Static address translation */
struct alias_link * struct alias_link *
LibAliasRedirectAddr(struct libalias *la, struct in_addr src_addr, LibAliasRedirectAddr(struct libalias *la, struct in_addr src_addr,
struct in_addr alias_addr) struct in_addr alias_addr)
{ {
struct alias_link *lnk; struct alias_link *lnk;
LIBALIAS_LOCK(la); LIBALIAS_LOCK(la);
lnk = AddLink(la, src_addr, NO_ADDR, alias_addr, lnk = AddLink(la, src_addr, ANY_ADDR, alias_addr,
0, 0, 0, 0, 0, 0,
LINK_ADDR); LINK_ADDR);
if (lnk != NULL) { if (lnk != NULL) {
lnk->flags |= LINK_PERMANENT; lnk->flags |= LINK_PERMANENT;
} }
#ifdef LIBALIAS_DEBUG #ifdef LIBALIAS_DEBUG
else { else {
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#else #else
LibAliasTime = time(NULL); LibAliasTime = time(NULL);
#endif #endif
for (i = 0; i < LINK_TABLE_OUT_SIZE; i++) for (i = 0; i < LINK_TABLE_OUT_SIZE; i++)
LIST_INIT(&la->linkTableOut[i]); LIST_INIT(&la->linkTableOut[i]);
for (i = 0; i < LINK_TABLE_IN_SIZE; i++) for (i = 0; i < LINK_TABLE_IN_SIZE; i++)
LIST_INIT(&la->linkTableIn[i]); LIST_INIT(&la->linkTableIn[i]);
for (i = 0; i < LINK_PARTIAL_SIZE; i++)
LIST_INIT(&la->linkPartialIn[i]);
TAILQ_INIT(&la->checkExpire); TAILQ_INIT(&la->checkExpire);
#ifdef _KERNEL #ifdef _KERNEL
AliasSctpInit(la); AliasSctpInit(la);
#endif #endif
LIBALIAS_LOCK_INIT(la); LIBALIAS_LOCK_INIT(la);
LIBALIAS_LOCK(la); LIBALIAS_LOCK(la);
} else { } else {
LIBALIAS_LOCK(la); LIBALIAS_LOCK(la);
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