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%{
/*-
* Copyright (c) 1985 The Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
/*static char sccsid[] = "from: @(#)commands.l 5.13 (Berkeley) 7/24/90";*/
static char rcsid[] = "$Id: commands.l,v 1.1 1995/10/18 08:47:55 deraadt Exp $";
#endif /* not lint */
/*
*******************************************************************************
*
* commands.l
*
* Andrew Cherenson CS298-26 Fall 1985
*
* Lex input file for the nslookup program command interpreter.
* When a sequence is recognized, the associated action
* routine is called. The action routine may need to
* parse the string for additional information.
*
* Recognized commands: (identifiers are shown in uppercase)
*
* server NAME - set default server to NAME, using default server
* lserver NAME - set default server to NAME, using initial server
* finger [NAME] - finger the optional NAME
* exit - exit the program
* root - set default server to the root
* ls NAME - list the domain NAME
* view FILE - sorts and view the file with more
* set OPTION - set an option
* help - print help information
* ? - print help information
* NAME - print info about the host/domain NAME
* using default server.
* NAME1 NAME2 - as above, but use NAME2 as server
*
*
* yylex Results:
* 0 upon end-of-file.
* 1 after each command.
*
*******************************************************************************
*/
#include "res.h"
extern char rootServerName[];
%}
WS [ \t]
FLET [A-Za-z0-9.*\\]
LET [A-Za-z0-9.*]
NAME [A-Za-z0-9.*=_/-]
%%
^{WS}*server{WS}+{LET}{NAME}*{WS}*$ {
/*
* 0 == use current server to find
* the new one.
* 1 == use original server to find
* the new one.
*/
SetDefaultServer(yytext, 0);
return(1);
}
^{WS}*lserver{WS}+{LET}{NAME}*{WS}*$ {
SetDefaultServer(yytext, 1);
return(1);
}
^{WS}*exit{WS}*$ {
return(0);
}
^{WS}*root{WS}*$ {
SetDefaultServer(rootServerName, 1);
return(1);
}
^{WS}*finger({WS}+{LET}{NAME}*)?{WS}+>>?{WS}*{NAME}+{WS}*$ {
/*
* 2nd arg.
* 0 == output to stdout
* 1 == output to file
*/
Finger(yytext, 1);
return(1);
}
^{WS}*finger({WS}+{LET}{NAME}*)?{WS}*$ {
Finger(yytext, 0);
return(1);
}
^{WS}*view{WS}+{NAME}+{WS}*$ {
ViewList(yytext);
return(1);
}
^{WS}*ls{WS}+(("-a"|"-d"|"-h"|"-m"|"-s"){WS}+)?{LET}{NAME}*{WS}+>>?{WS}+{NAME}+{WS}*$ {
/*
* 2nd arg.
* 0 == output to stdout
* 1 == output to file
*/
ListHosts(yytext, 1);
return(1);
}
^{WS}*ls{WS}+(("-a"|"-d"|"-h"|"-m"|"-s"){WS}+)?{LET}{NAME}*{WS}*$ {
ListHosts(yytext, 0);
return(1);
}
^{WS}*ls{WS}+-t{WS}+({LET}{NAME}*{WS}+)?{LET}{NAME}*{WS}+>>?{WS}+{NAME}+{WS}*$ {
/*
* 2nd arg.
* 0 == output to stdout
* 1 == output to file
*/
ListHostsByType(yytext, 1);
return(1);
}
^{WS}*ls{WS}+-t{WS}+({LET}{NAME}*{WS}+)?{LET}{NAME}*{WS}*$ {
ListHostsByType(yytext, 0);
return(1);
}
^{WS}*set{WS}+{NAME}+{WS}*$ {
SetOption(yytext);
return(1);
}
^{WS}*help{WS}*$ {
extern void PrintHelp();
PrintHelp();
return(1);
}
^{WS}*"?"{WS}*$ {
extern void PrintHelp();
PrintHelp();
return(1);
}
^{WS}*{FLET}{NAME}*{WS}+>>?{WS}*{NAME}+{WS}*$ {
/*
* 0 == output to stdout
* 1 == output to file
*/
LookupHost(yytext, 1);
return(1);
}
^{WS}*{FLET}{NAME}*{WS}*$ {
LookupHost(yytext, 0);
return(1);
}
^{WS}*{FLET}{NAME}*{WS}+{LET}{NAME}*{WS}+>>?{WS}*{NAME}+{WS}*$ {
/*
* 0 == output to stdout
* 1 == output to file
*/
LookupHostWithServer(yytext, 1);
return(1);
}
^{WS}*{FLET}{NAME}*{WS}+{LET}{NAME}*{WS}*$ {
LookupHostWithServer(yytext, 0);
return(1);
}
^{WS}*\n {
return(1);
}
^.*\n {
printf("Unrecognized command: %s",
yytext);
return(1);
}
\n { ; }
%%
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