1 files changed, 172 insertions, 0 deletions
diff --git a/lib/libalias/alias_local.h b/lib/libalias/alias_local.h
new file mode 100644
index 0000000..6b4389c
--- /dev/null
+++ b/lib/libalias/alias_local.h
@@ -0,0 +1,172 @@
+/* -*- mode: c; tab-width: 3; c-basic-offset: 3; -*-
+    Alias_local.h contains the function prototypes for alias.c,
+    alias_db.c, alias_util.c and alias_ftp.c, alias_irc.c (as well
+    as any future add-ons).  It also includes macros, globals and
+    struct definitions shared by more than one alias*.c file.
+
+    This include file is intended to be used only within the aliasing
+    software.  Outside world interfaces are defined in alias.h
+
+    This software is placed into the public domain with no restrictions
+    on its distribution.
+
+    Initial version:  August, 1996  (cjm)    
+    
+     <updated several times by original author and Eivind Eklund>
+
+    $FreeBSD$
+*/
+#ifndef ALIAS_LOCAL_H
+#define ALIAS_LOCAL_H
+
+
+/*
+    Macros
+ */
+
+/*
+   The following macro is used to update an
+   internet checksum.  "delta" is a 32-bit
+   accumulation of all the changes to the
+   checksum (adding in new 16-bit words and
+   subtracting out old words), and "cksum"
+   is the checksum value to be updated.
+*/
+#define ADJUST_CHECKSUM(acc, cksum) { \
+    acc += cksum; \
+    if (acc < 0) \
+    { \
+        acc = -acc; \
+        acc = (acc >> 16) + (acc & 0xffff); \
+        acc += acc >> 16; \
+        cksum = (u_short) ~acc; \
+    } \
+    else \
+    { \
+        acc = (acc >> 16) + (acc & 0xffff); \
+        acc += acc >> 16; \
+        cksum = (u_short) acc; \
+    } \
+}
+
+
+/*
+    Globals
+*/
+
+extern int packetAliasMode;
+
+
+/*
+    Structs
+*/
+
+struct alias_link;    /* Incomplete structure */
+
+
+/*
+    Prototypes
+*/
+
+/* General utilities */
+u_short IpChecksum(struct ip *);
+u_short TcpChecksum(struct ip *);
+void DifferentialChecksum(u_short *, u_short *, u_short *, int);
+
+/* Internal data access */
+struct alias_link *
+FindIcmpIn(struct in_addr, struct in_addr, u_short);
+
+struct alias_link *
+FindIcmpOut(struct in_addr, struct in_addr, u_short);
+
+struct alias_link *
+FindFragmentIn1(struct in_addr, struct in_addr, u_short);
+
+struct alias_link *
+FindFragmentIn2(struct in_addr, struct in_addr, u_short);
+
+struct alias_link *
+AddFragmentPtrLink(struct in_addr, u_short);
+
+struct alias_link *
+FindFragmentPtr(struct in_addr, u_short);
+
+struct alias_link *
+FindUdpTcpIn (struct in_addr, struct in_addr, u_short, u_short, u_char);
+
+struct alias_link *
+FindUdpTcpOut(struct in_addr, struct in_addr, u_short, u_short, u_char);
+
+struct in_addr
+FindOriginalAddress(struct in_addr);
+
+struct in_addr
+FindAliasAddress(struct in_addr);
+
+/* External data access/modification */
+void GetFragmentAddr(struct alias_link *, struct in_addr *);
+void SetFragmentAddr(struct alias_link *, struct in_addr);
+void GetFragmentPtr(struct alias_link *, char **);
+void SetFragmentPtr(struct alias_link *, char *);
+void SetStateIn(struct alias_link *, int);
+void SetStateOut(struct alias_link *, int);
+int GetStateIn(struct alias_link *);
+int GetStateOut(struct alias_link *);
+struct in_addr GetOriginalAddress(struct alias_link *);
+struct in_addr GetDestAddress(struct alias_link *);
+struct in_addr GetAliasAddress(struct alias_link *);
+struct in_addr GetDefaultAliasAddress(void);
+void SetDefaultAliasAddress(struct in_addr);
+u_short GetOriginalPort(struct alias_link *);
+u_short GetAliasPort(struct alias_link *);
+struct in_addr GetProxyAddress(struct alias_link *);
+void SetProxyAddress(struct alias_link *, struct in_addr);
+u_short GetProxyPort(struct alias_link *);
+void SetProxyPort(struct alias_link *, u_short);
+void SetAckModified(struct alias_link *);
+int GetAckModified(struct alias_link *);
+int GetDeltaAckIn(struct ip *, struct alias_link *);
+int GetDeltaSeqOut(struct ip *, struct alias_link *);
+void AddSeq(struct ip *, struct alias_link *, int);
+void SetExpire(struct alias_link *, int);
+void ClearCheckNewLink(void);
+#ifndef NO_FW_PUNCH
+void PunchFWHole(struct alias_link *);
+#endif
+
+
+/* Housekeeping function */
+void HouseKeeping(void);
+
+/* Tcp specfic routines */
+/*lint -save -library Suppress flexelint warnings */
+
+/* FTP routines */
+void AliasHandleFtpOut(struct ip *, struct alias_link *, int);
+
+/* IRC routines */
+void AliasHandleIrcOut(struct ip *, struct alias_link *, int);
+
+/* NetBIOS routines */
+int AliasHandleUdpNbt(struct ip *, struct alias_link *, struct in_addr *, u_short);
+int AliasHandleUdpNbtNS(struct ip *, struct alias_link *, struct in_addr *, u_short *, struct in_addr *, u_short *);
+
+/* CUSeeMe routines */
+void AliasHandleCUSeeMeOut(struct ip *, struct alias_link *);
+void AliasHandleCUSeeMeIn(struct ip *, struct in_addr);
+
+/* Transparent proxy routines */
+int ProxyCheck(struct ip *, struct in_addr *, u_short *);
+void ProxyModify(struct alias_link *, struct ip *, int, int);
+
+
+enum alias_tcp_state {
+    ALIAS_TCP_STATE_NOT_CONNECTED,
+    ALIAS_TCP_STATE_CONNECTED,
+    ALIAS_TCP_STATE_DISCONNECTED
+};
+
+int GetPptpAlias (struct in_addr*);
+/*lint -restore */
+#endif /* defined(ALIAS_LOCAL_H) */