Support proxying & transparent proxying curtesy of libalias(3).

Order the alias command descriptions.
Order the SEE ALSO entries.

usr.sbin/ppp/alias_cmd.c

@@ -2,7 +2,7 @@
  * The code in this file was written by Eivind Eklund <perhaps@yes.no>,
  * who places it in the public domain without restriction.
  *
- *	$Id: alias_cmd.c,v 1.18 1998/09/17 00:45:25 brian Exp $
+ *	$Id: alias_cmd.c,v 1.19 1999/01/28 01:56:30 brian Exp $
  */
 
 #include <sys/param.h>
@@ -216,3 +216,26 @@ StrToAddrAndPort(const char *str, struct in_addr *addr, u_short *port, const cha
 
   return StrToPort(colon+1, port, proto);
 }
+
+int
+alias_ProxyRule(struct cmdargs const *arg)
+{
+  char cmd[LINE_LEN];
+  int f, pos;
+  size_t len;
+
+  if (arg->argn >= arg->argc)
+    return -1;
+
+  for (f = arg->argn, pos = 0; f < arg->argc; f++) {
+    len = strlen(arg->argv[f]);
+    if (sizeof cmd - pos < len + (f ? 1 : 0))
+      break;
+    if (f)
+      cmd[pos++] = ' ';
+    strcpy(cmd + pos, arg->argv[f]);
+    pos += len;
+  }
+
+  return PacketAliasProxyRule(cmd);
+}

usr.sbin/ppp/alias_cmd.h

@@ -2,10 +2,11 @@
  * The code in this file was written by Eivind Eklund <perhaps@yes.no>,
  * who places it in the public domain without restriction.
  *
- *	$Id: alias_cmd.h,v 1.7.2.2 1998/05/01 19:23:44 brian Exp $
+ *	$Id: alias_cmd.h,v 1.8 1998/05/21 21:43:45 brian Exp $
  */
 
 struct cmdargs;
 
 extern int alias_RedirectPort(struct cmdargs const *);
 extern int alias_RedirectAddr(struct cmdargs const *);
+extern int alias_ProxyRule(struct cmdargs const *);

usr.sbin/ppp/command.c

@@ -17,7 +17,7 @@
  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  *
- * $Id: command.c,v 1.185 1999/03/03 23:00:39 brian Exp $
+ * $Id: command.c,v 1.186 1999/03/04 17:42:15 brian Exp $
  *
  */
 #include <sys/param.h>
@@ -141,7 +141,7 @@
 #define NEG_DNS		52
 
 const char Version[] = "2.11";
-const char VersionDate[] = "$Date: 1999/03/03 23:00:39 $";
+const char VersionDate[] = "$Date: 1999/03/04 17:42:15 $";
 
 static int ShowCommand(struct cmdargs const *);
 static int TerminalCommand(struct cmdargs const *);
@@ -554,6 +554,8 @@ static struct cmdtab const AliasCommands[] =
    (const void *) PKT_ALIAS_LOG},
   {"port", NULL, alias_RedirectPort, LOCAL_AUTH,
    "port redirection", "alias port [proto addr_local:port_local  port_alias]"},
+  {"proxy", NULL, alias_ProxyRule, LOCAL_AUTH,
+   "proxy control", "alias proxy server host[:port] ..."},
   {"same_ports", NULL, AliasOption, LOCAL_AUTH,
    "try to leave port numbers unchanged", "alias same_ports [yes|no]",
    (const void *) PKT_ALIAS_SAME_PORTS},

usr.sbin/ppp/nat_cmd.c

@@ -2,7 +2,7 @@
  * The code in this file was written by Eivind Eklund <perhaps@yes.no>,
  * who places it in the public domain without restriction.
  *
- *	$Id: alias_cmd.c,v 1.18 1998/09/17 00:45:25 brian Exp $
+ *	$Id: alias_cmd.c,v 1.19 1999/01/28 01:56:30 brian Exp $
  */
 
 #include <sys/param.h>
@@ -216,3 +216,26 @@ StrToAddrAndPort(const char *str, struct in_addr *addr, u_short *port, const cha
 
   return StrToPort(colon+1, port, proto);
 }
+
+int
+alias_ProxyRule(struct cmdargs const *arg)
+{
+  char cmd[LINE_LEN];
+  int f, pos;
+  size_t len;
+
+  if (arg->argn >= arg->argc)
+    return -1;
+
+  for (f = arg->argn, pos = 0; f < arg->argc; f++) {
+    len = strlen(arg->argv[f]);
+    if (sizeof cmd - pos < len + (f ? 1 : 0))
+      break;
+    if (f)
+      cmd[pos++] = ' ';
+    strcpy(cmd + pos, arg->argv[f]);
+    pos += len;
+  }
+
+  return PacketAliasProxyRule(cmd);
+}

usr.sbin/ppp/nat_cmd.h

@@ -2,10 +2,11 @@
  * The code in this file was written by Eivind Eklund <perhaps@yes.no>,
  * who places it in the public domain without restriction.
  *
- *	$Id: alias_cmd.h,v 1.7.2.2 1998/05/01 19:23:44 brian Exp $
+ *	$Id: alias_cmd.h,v 1.8 1998/05/21 21:43:45 brian Exp $
  */
 
 struct cmdargs;
 
 extern int alias_RedirectPort(struct cmdargs const *);
 extern int alias_RedirectAddr(struct cmdargs const *);
+extern int alias_ProxyRule(struct cmdargs const *);

usr.sbin/ppp/ppp.8

@@ -1,4 +1,4 @@
-.\" $Id: ppp.8,v 1.154 1999/03/04 17:42:15 brian Exp $
+.\" $Id: ppp.8,v 1.155 1999/03/07 11:54:42 brian Exp $
 .Dd 20 September 1995
 .nr XX \w'\fC00'
 .Os FreeBSD
@@ -2648,6 +2648,22 @@ The
 .Fl alias
 command line flag is synonymous with
 .Dq alias enable yes .
+.It alias addr Op Ar addr_local addr_alias
+This command allows data for
+.Ar addr_alias
+to be redirected to
+.Ar addr_local .
+It is useful if you own a small number of real IP numbers that
+you wish to map to specific machines behind your gateway.
+.It alias deny_incoming [yes|no]
+If set to yes, this command will refuse all incoming connections
+by dropping the packets in much the same way as a firewall would.
+.It alias help|?
+This command gives a summary of available alias commands.
+.It alias log [yes|no]
+This option causes various aliasing statistics and information to
+be logged to the file
+.Pa /var/log/alias.log .
 .It alias port Op Ar proto targetIP:targetPORT [aliasIP:]aliasPORT
 This command allows us to redirect connections arriving at
 .Ar aliasPORT
@@ -2665,22 +2681,15 @@ or
 and only connections of the given protocol
 are matched.  This option is useful if you wish to run things like
 Internet phone on the machines behind your gateway.
-.It alias addr Op Ar addr_local addr_alias
-This command allows data for
-.Ar addr_alias
-to be redirected to
-.Ar addr_local .
-It is useful if you own a small number of real IP numbers that
-you wish to map to specific machines behind your gateway.
-.It alias deny_incoming [yes|no]
-If set to yes, this command will refuse all incoming connections
-by dropping the packets in much the same way as a firewall would.
-.It alias help|?
-This command gives a summary of available alias commands.
-.It alias log [yes|no]
-This option causes various aliasing statistics and information to
-be logged to the file
-.Pa /var/log/alias.log .
+.It "alias proxy cmd" Ar arg Ns No ...
+This command tells
+.Nm
+to proxy certain connections, redirecting them to a given server.  Refer
+to the description of
+.Fn PacketAliasProxyRule
+in
+.Xr libalias 3
+for details of the available commands.
 .It alias same_ports [yes|no]
 When enabled, this command will tell the alias library attempt to
 avoid changing the port number on outgoing packets.  This is useful
@@ -4241,11 +4250,13 @@ This socket is used to pass links between different instances of
 .Xr login 1 ,
 .Xr tcpdump 1 ,
 .Xr telnet 1 ,
+.Xr libalias 3 ,
 .Xr syslog 3 ,
 .Xr uucplock 3 ,
 .Xr crontab 5 ,
 .Xr group 5 ,
 .Xr passwd 5 ,
+.Xr radius.conf 5 ,
 .Xr resolv.conf 5 ,
 .Xr syslog.conf 5 ,
 .Xr adduser 8 ,
@@ -4257,7 +4268,6 @@ This socket is used to pass links between different instances of
 .Xr ping 8 ,
 .Xr pppctl 8 ,
 .Xr pppd 8 ,
-.Xr radius.conf 5 ,
 .Xr route 8 ,
 .Xr syslogd 8 ,
 .Xr traceroute 8 ,

usr.sbin/ppp/ppp.8.m4

@@ -1,4 +1,4 @@
-.\" $Id: ppp.8,v 1.154 1999/03/04 17:42:15 brian Exp $
+.\" $Id: ppp.8,v 1.155 1999/03/07 11:54:42 brian Exp $
 .Dd 20 September 1995
 .nr XX \w'\fC00'
 .Os FreeBSD
@@ -2648,6 +2648,22 @@ The
 .Fl alias
 command line flag is synonymous with
 .Dq alias enable yes .
+.It alias addr Op Ar addr_local addr_alias
+This command allows data for
+.Ar addr_alias
+to be redirected to
+.Ar addr_local .
+It is useful if you own a small number of real IP numbers that
+you wish to map to specific machines behind your gateway.
+.It alias deny_incoming [yes|no]
+If set to yes, this command will refuse all incoming connections
+by dropping the packets in much the same way as a firewall would.
+.It alias help|?
+This command gives a summary of available alias commands.
+.It alias log [yes|no]
+This option causes various aliasing statistics and information to
+be logged to the file
+.Pa /var/log/alias.log .
 .It alias port Op Ar proto targetIP:targetPORT [aliasIP:]aliasPORT
 This command allows us to redirect connections arriving at
 .Ar aliasPORT
@@ -2665,22 +2681,15 @@ or
 and only connections of the given protocol
 are matched.  This option is useful if you wish to run things like
 Internet phone on the machines behind your gateway.
-.It alias addr Op Ar addr_local addr_alias
-This command allows data for
-.Ar addr_alias
-to be redirected to
-.Ar addr_local .
-It is useful if you own a small number of real IP numbers that
-you wish to map to specific machines behind your gateway.
-.It alias deny_incoming [yes|no]
-If set to yes, this command will refuse all incoming connections
-by dropping the packets in much the same way as a firewall would.
-.It alias help|?
-This command gives a summary of available alias commands.
-.It alias log [yes|no]
-This option causes various aliasing statistics and information to
-be logged to the file
-.Pa /var/log/alias.log .
+.It "alias proxy cmd" Ar arg Ns No ...
+This command tells
+.Nm
+to proxy certain connections, redirecting them to a given server.  Refer
+to the description of
+.Fn PacketAliasProxyRule
+in
+.Xr libalias 3
+for details of the available commands.
 .It alias same_ports [yes|no]
 When enabled, this command will tell the alias library attempt to
 avoid changing the port number on outgoing packets.  This is useful
@@ -4241,11 +4250,13 @@ This socket is used to pass links between different instances of
 .Xr login 1 ,
 .Xr tcpdump 1 ,
 .Xr telnet 1 ,
+.Xr libalias 3 ,
 .Xr syslog 3 ,
 .Xr uucplock 3 ,
 .Xr crontab 5 ,
 .Xr group 5 ,
 .Xr passwd 5 ,
+.Xr radius.conf 5 ,
 .Xr resolv.conf 5 ,
 .Xr syslog.conf 5 ,
 .Xr adduser 8 ,
@@ -4257,7 +4268,6 @@ This socket is used to pass links between different instances of
 .Xr ping 8 ,
 .Xr pppctl 8 ,
 .Xr pppd 8 ,
-.Xr radius.conf 5 ,
 .Xr route 8 ,
 .Xr syslogd 8 ,
 .Xr traceroute 8 ,