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A new API function PacketAliasRedirectDynamic() can be used

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to mark a fully specified static link as dynamic; i.e. make
it a one-time link.
This commit is contained in:
Ruslan Ermilov 2003-06-01 23:15:00 +00:00
parent 0bbe770d6f
commit 234dfc904a
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=115650
6 changed files with 72 additions and 2 deletions
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1
lib/libalias/alias.h
View File

@ -69,6 +69,7 @@ int PacketAliasAddServer(struct alias_link *_link,
struct alias_link *
PacketAliasRedirectAddr(struct in_addr _src_addr,
struct in_addr _alias_addr);
int PacketAliasRedirectDynamic(struct alias_link *_link);
void PacketAliasRedirectDelete(struct alias_link *_link);
struct alias_link *
PacketAliasRedirectPort(struct in_addr _src_addr,

15
lib/libalias/alias_db.c
View File

@ -2358,6 +2358,7 @@ UninitPacketAliasLog(void)
PacketAliasAddServer()
PacketAliasRedirectProto()
PacketAliasRedirectAddr()
PacketAliasRedirectDynamic()
PacketAliasRedirectDelete()
PacketAliasSetAddress()
PacketAliasInit()
@ -2499,6 +2500,20 @@ PacketAliasRedirectAddr(struct in_addr src_addr,
}
/* Mark the aliasing link dynamic */
int
PacketAliasRedirectDynamic(struct alias_link *link)
{
if (link->flags & LINK_PARTIALLY_SPECIFIED)
return (-1);
else {
link->flags &= ~LINK_PERMANENT;
return (0);
}
}
void
PacketAliasRedirectDelete(struct alias_link *link)
{

21
lib/libalias/libalias.3
View File

@ -545,7 +545,26 @@ the
.Fa port
argument is ignored and could have any value, e.g. htons(~0).
.Pp
This function returns 0 on success, -1 otherwise.
This function returns 0 on success, \-1 otherwise.
.Ed
.Pp
.Ft int
.Fn PacketAliasRedirectDynamic "struct alias_link *link"
.Bd -ragged -offset indent
This function marks the specified static redirect rule entered by
.Fn PacketAliasRedirectPort
as dynamic.
This can be used to e.g. dynamically redirect a single TCP connection,
after which the rule is removed.
Only fully specified links can be made dynamic.
(See the
.Sx STATIC AND DYNAMIC LINKS
and
.Sx PARTIALLY SPECIFIED ALIASING LINKS
sections below for a definition of static vs. dynamic,
and partially vs. fully specified links.)
.Pp
This function returns 0 on success, \-1 otherwise.
.Ed
.Pp
.Ft void

1
sys/netinet/libalias/alias.h
View File

@ -69,6 +69,7 @@ int PacketAliasAddServer(struct alias_link *_link,
struct alias_link *
PacketAliasRedirectAddr(struct in_addr _src_addr,
struct in_addr _alias_addr);
int PacketAliasRedirectDynamic(struct alias_link *_link);
void PacketAliasRedirectDelete(struct alias_link *_link);
struct alias_link *
PacketAliasRedirectPort(struct in_addr _src_addr,

15
sys/netinet/libalias/alias_db.c
View File

@ -2358,6 +2358,7 @@ UninitPacketAliasLog(void)
PacketAliasAddServer()
PacketAliasRedirectProto()
PacketAliasRedirectAddr()
PacketAliasRedirectDynamic()
PacketAliasRedirectDelete()
PacketAliasSetAddress()
PacketAliasInit()
@ -2499,6 +2500,20 @@ PacketAliasRedirectAddr(struct in_addr src_addr,
}
/* Mark the aliasing link dynamic */
int
PacketAliasRedirectDynamic(struct alias_link *link)
{
if (link->flags & LINK_PARTIALLY_SPECIFIED)
return (-1);
else {
link->flags &= ~LINK_PERMANENT;
return (0);
}
}
void
PacketAliasRedirectDelete(struct alias_link *link)
{

21
sys/netinet/libalias/libalias.3
View File

@ -545,7 +545,26 @@ the
.Fa port
argument is ignored and could have any value, e.g. htons(~0).
.Pp
This function returns 0 on success, -1 otherwise.
This function returns 0 on success, \-1 otherwise.
.Ed
.Pp
.Ft int
.Fn PacketAliasRedirectDynamic "struct alias_link *link"
.Bd -ragged -offset indent
This function marks the specified static redirect rule entered by
.Fn PacketAliasRedirectPort
as dynamic.
This can be used to e.g. dynamically redirect a single TCP connection,
after which the rule is removed.
Only fully specified links can be made dynamic.
(See the
.Sx STATIC AND DYNAMIC LINKS
and
.Sx PARTIALLY SPECIFIED ALIASING LINKS
sections below for a definition of static vs. dynamic,
and partially vs. fully specified links.)
.Pp
This function returns 0 on success, \-1 otherwise.
.Ed
.Pp
.Ft void