diff options
Diffstat (limited to 'lib/libalias/alias_local.h')
| -rw-r--r-- | lib/libalias/alias_local.h | 164 |
1 files changed, 123 insertions, 41 deletions
diff --git a/lib/libalias/alias_local.h b/lib/libalias/alias_local.h index d207f9f..0ed289a 100644 --- a/lib/libalias/alias_local.h +++ b/lib/libalias/alias_local.h @@ -46,6 +46,92 @@ #ifndef _ALIAS_LOCAL_H_ #define _ALIAS_LOCAL_H_ +#include <sys/queue.h> + +/* Sizes of input and output link tables */ +#define LINK_TABLE_OUT_SIZE 101 +#define LINK_TABLE_IN_SIZE 4001 + +struct proxy_entry; + +struct libalias { + LIST_ENTRY(libalias) instancelist; + + int packetAliasMode; /* Mode flags */ + /* - documented in alias.h */ + + struct in_addr aliasAddress; /* Address written onto source */ + /* field of IP packet. */ + + struct in_addr targetAddress; /* IP address incoming packets */ + /* are sent to if no aliasing */ + /* link already exists */ + + struct in_addr nullAddress; /* Used as a dummy parameter for */ + /* some function calls */ + + LIST_HEAD(, alias_link) linkTableOut[LINK_TABLE_OUT_SIZE]; + /* Lookup table of pointers to */ + /* chains of link records. Each */ + + LIST_HEAD(, alias_link) linkTableIn[LINK_TABLE_IN_SIZE]; + /* link record is doubly indexed */ + /* into input and output lookup */ + /* tables. */ + + /* Link statistics */ + int icmpLinkCount; + int udpLinkCount; + int tcpLinkCount; + int pptpLinkCount; + int protoLinkCount; + int fragmentIdLinkCount; + int fragmentPtrLinkCount; + int sockCount; + + int cleanupIndex; /* Index to chain of link table */ + /* being inspected for old links */ + + int timeStamp; /* System time in seconds for */ + /* current packet */ + + int lastCleanupTime; /* Last time IncrementalCleanup() */ + /* was called */ + + int houseKeepingResidual; /* used by HouseKeeping() */ + + int deleteAllLinks; /* If equal to zero, DeleteLink() */ + /* will not remove permanent links */ + + FILE *monitorFile; /* File descriptor for link */ + /* statistics monitoring file */ + + int newDefaultLink; /* Indicates if a new aliasing */ + /* link has been created after a */ + /* call to PacketAliasIn/Out(). */ + +#ifndef NO_FW_PUNCH + int fireWallFD; /* File descriptor to be able to */ + /* control firewall. Opened by */ + /* PacketAliasSetMode on first */ + /* setting the PKT_ALIAS_PUNCH_FW */ + /* flag. */ + int fireWallBaseNum; /* The first firewall entry free for our use */ + int fireWallNumNums; /* How many entries can we use? */ + int fireWallActiveNum; /* Which entry did we last use? */ + char *fireWallField; /* bool array for entries */ +#endif + + unsigned int skinnyPort; /* TCP port used by the Skinny */ + /* protocol. */ + + struct proxy_entry *proxyList; + + struct in_addr true_addr; /* in network byte order. */ + u_short true_port; /* in host byte order. */ + +}; + /* Macros */ /* @@ -71,10 +157,6 @@ } \ } while (0) -/* Globals */ - -extern int packetAliasMode; -extern unsigned int skinnyPort; /* Prototypes */ @@ -86,58 +168,58 @@ void DifferentialChecksum(u_short *_cksum, u_short *_new, u_short *_old, /* Internal data access */ struct alias_link * - FindIcmpIn(struct in_addr _dst_addr, struct in_addr _alias_addr, + FindIcmpIn(struct libalias *la, struct in_addr _dst_addr, struct in_addr _alias_addr, u_short _id_alias, int _create); struct alias_link * - FindIcmpOut(struct in_addr _src_addr, struct in_addr _dst_addr, + FindIcmpOut(struct libalias *la, struct in_addr _src_addr, struct in_addr _dst_addr, u_short _id, int _create); struct alias_link * - FindFragmentIn1(struct in_addr _dst_addr, struct in_addr _alias_addr, + FindFragmentIn1(struct libalias *la, struct in_addr _dst_addr, struct in_addr _alias_addr, u_short _ip_id); struct alias_link * - FindFragmentIn2(struct in_addr _dst_addr, struct in_addr _alias_addr, + FindFragmentIn2(struct libalias *la, struct in_addr _dst_addr, struct in_addr _alias_addr, u_short _ip_id); struct alias_link * - AddFragmentPtrLink(struct in_addr _dst_addr, u_short _ip_id); + AddFragmentPtrLink(struct libalias *la, struct in_addr _dst_addr, u_short _ip_id); struct alias_link * - FindFragmentPtr(struct in_addr _dst_addr, u_short _ip_id); + FindFragmentPtr(struct libalias *la, struct in_addr _dst_addr, u_short _ip_id); struct alias_link * - FindProtoIn(struct in_addr _dst_addr, struct in_addr _alias_addr, + FindProtoIn(struct libalias *la, struct in_addr _dst_addr, struct in_addr _alias_addr, u_char _proto); struct alias_link * - FindProtoOut(struct in_addr _src_addr, struct in_addr _dst_addr, + FindProtoOut(struct libalias *la, struct in_addr _src_addr, struct in_addr _dst_addr, u_char _proto); struct alias_link * - FindUdpTcpIn(struct in_addr _dst_addr, struct in_addr _alias_addr, + FindUdpTcpIn(struct libalias *la, struct in_addr _dst_addr, struct in_addr _alias_addr, u_short _dst_port, u_short _alias_port, u_char _proto, int _create); struct alias_link * - FindUdpTcpOut(struct in_addr _src_addr, struct in_addr _dst_addr, + FindUdpTcpOut(struct libalias *la, struct in_addr _src_addr, struct in_addr _dst_addr, u_short _src_port, u_short _dst_port, u_char _proto, int _create); struct alias_link * - AddPptp(struct in_addr _src_addr, struct in_addr _dst_addr, + AddPptp(struct libalias *la, struct in_addr _src_addr, struct in_addr _dst_addr, struct in_addr _alias_addr, u_int16_t _src_call_id); struct alias_link * - FindPptpOutByCallId(struct in_addr _src_addr, + FindPptpOutByCallId(struct libalias *la, struct in_addr _src_addr, struct in_addr _dst_addr, u_int16_t _src_call_id); struct alias_link * - FindPptpInByCallId(struct in_addr _dst_addr, + FindPptpInByCallId(struct libalias *la, struct in_addr _dst_addr, struct in_addr _alias_addr, u_int16_t _dst_call_id); struct alias_link * - FindPptpOutByPeerCallId(struct in_addr _src_addr, + FindPptpOutByPeerCallId(struct libalias *la, struct in_addr _src_addr, struct in_addr _dst_addr, u_int16_t _dst_call_id); struct alias_link * - FindPptpInByPeerCallId(struct in_addr _dst_addr, + FindPptpInByPeerCallId(struct libalias *la, struct in_addr _dst_addr, struct in_addr _alias_addr, u_int16_t _alias_call_id); struct alias_link * - FindRtspOut(struct in_addr _src_addr, struct in_addr _dst_addr, + FindRtspOut(struct libalias *la, struct in_addr _src_addr, struct in_addr _dst_addr, u_short _src_port, u_short _alias_port, u_char _proto); struct in_addr - FindOriginalAddress(struct in_addr _alias_addr); + FindOriginalAddress(struct libalias *la, struct in_addr _alias_addr); struct in_addr - FindAliasAddress(struct in_addr _original_addr); + FindAliasAddress(struct libalias *la, struct in_addr _original_addr); /* External data access/modification */ -int FindNewPortGroup(struct in_addr _dst_addr, struct in_addr _alias_addr, +int FindNewPortGroup(struct libalias *la, struct in_addr _dst_addr, struct in_addr _alias_addr, u_short _src_port, u_short _dst_port, u_short _port_count, u_char _proto, u_char _align); void GetFragmentAddr(struct alias_link *_link, struct in_addr *_src_addr); @@ -155,8 +237,8 @@ struct in_addr struct in_addr GetAliasAddress(struct alias_link *_link); struct in_addr - GetDefaultAliasAddress(void); -void SetDefaultAliasAddress(struct in_addr _alias_addr); + GetDefaultAliasAddress(struct libalias *la); +void SetDefaultAliasAddress(struct libalias *la, struct in_addr _alias_addr); u_short GetOriginalPort(struct alias_link *_link); u_short GetAliasPort(struct alias_link *_link); struct in_addr @@ -170,7 +252,7 @@ int GetDeltaAckIn(struct ip *_pip, struct alias_link *_link); int GetDeltaSeqOut(struct ip *_pip, struct alias_link *_link); void AddSeq(struct ip *_pip, struct alias_link *_link, int _delta); void SetExpire(struct alias_link *_link, int _expire); -void ClearCheckNewLink(void); +void ClearCheckNewLink(struct libalias *la); void SetProtocolFlags(struct alias_link *_link, int _pflags); int GetProtocolFlags(struct alias_link *_link); void SetDestCallId(struct alias_link *_link, u_int16_t _cid); @@ -179,47 +261,47 @@ void PunchFWHole(struct alias_link *_link); #endif /* Housekeeping function */ -void HouseKeeping(void); +void HouseKeeping(struct libalias *); /* Tcp specfic routines */ /* lint -save -library Suppress flexelint warnings */ /* FTP routines */ -void AliasHandleFtpOut(struct ip *_pip, struct alias_link *_link, +void AliasHandleFtpOut(struct libalias *la, struct ip *_pip, struct alias_link *_link, int _maxpacketsize); /* IRC routines */ -void AliasHandleIrcOut(struct ip *_pip, struct alias_link *_link, +void AliasHandleIrcOut(struct libalias *la, struct ip *_pip, struct alias_link *_link, int _maxsize); /* RTSP routines */ -void AliasHandleRtspOut(struct ip *_pip, struct alias_link *_link, +void AliasHandleRtspOut(struct libalias *la, struct ip *_pip, struct alias_link *_link, int _maxpacketsize); /* PPTP routines */ -void AliasHandlePptpOut(struct ip *_pip, struct alias_link *_link); -void AliasHandlePptpIn(struct ip *_pip, struct alias_link *_link); -int AliasHandlePptpGreOut(struct ip *_pip); -int AliasHandlePptpGreIn(struct ip *_pip); +void AliasHandlePptpOut(struct libalias *la, struct ip *_pip, struct alias_link *_link); +void AliasHandlePptpIn(struct libalias *la, struct ip *_pip, struct alias_link *_link); +int AliasHandlePptpGreOut(struct libalias *la, struct ip *_pip); +int AliasHandlePptpGreIn(struct libalias *la, struct ip *_pip); /* NetBIOS routines */ -int AliasHandleUdpNbt(struct ip *_pip, struct alias_link *_link, +int AliasHandleUdpNbt(struct libalias *la, struct ip *_pip, struct alias_link *_link, struct in_addr *_alias_address, u_short _alias_port); -int AliasHandleUdpNbtNS(struct ip *_pip, struct alias_link *_link, +int AliasHandleUdpNbtNS(struct libalias *la, struct ip *_pip, struct alias_link *_link, struct in_addr *_alias_address, u_short *_alias_port, struct in_addr *_original_address, u_short *_original_port); /* CUSeeMe routines */ -void AliasHandleCUSeeMeOut(struct ip *_pip, struct alias_link *_link); -void AliasHandleCUSeeMeIn(struct ip *_pip, struct in_addr _original_addr); +void AliasHandleCUSeeMeOut(struct libalias *la, struct ip *_pip, struct alias_link *_link); +void AliasHandleCUSeeMeIn(struct libalias *la, struct ip *_pip, struct in_addr _original_addr); /* Skinny routines */ -void AliasHandleSkinny(struct ip *_pip, struct alias_link *_link); +void AliasHandleSkinny(struct libalias *la, struct ip *_pip, struct alias_link *_link); /* Transparent proxy routines */ -int ProxyCheck(struct ip *_pip, struct in_addr *_proxy_server_addr, +int ProxyCheck(struct libalias *la, struct ip *_pip, struct in_addr *_proxy_server_addr, u_short *_proxy_server_port); -void ProxyModify(struct alias_link *_link, struct ip *_pip, +void ProxyModify(struct libalias *la, struct alias_link *_link, struct ip *_pip, int _maxpacketsize, int _proxy_type); enum alias_tcp_state { |
