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|
/* $Id: grammar.y,v 1.17 2002-11-26 21:44:43 rjkaes Exp $
*
* This is the grammar for tinyproxy's configuration file. It needs to be
* in sync with scanner.l. If you know more about yacc and lex than I do
* please update these files.
*
* Copyright (C) 2000 Robert James Kaes (rjkaes@flarenet.com)
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2, or (at your option) any
* later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*/
%{
#include "tinyproxy.h"
#include "acl.h"
#include "anonymous.h"
#include "child.h"
#include "filter.h"
#include "log.h"
#include "reqs.h"
void yyerror(char *s);
int yylex(void);
%}
%union {
unsigned int num;
char *cptr;
void *ptr;
}
/* statements */
%token KW_PORT KW_LISTEN
%token KW_LOGFILE KW_PIDFILE KW_SYSLOG
%token KW_MAXCLIENTS KW_MAXSPARESERVERS KW_MINSPARESERVERS KW_STARTSERVERS
%token KW_MAXREQUESTSPERCHILD
%token KW_TIMEOUT
%token KW_USER KW_GROUP
%token KW_ANONYMOUS KW_XTINYPROXY
%token KW_FILTER KW_FILTERURLS KW_FILTEREXTENDED KW_FILTER_DEFAULT_DENY
%token KW_UPSTREAM
%token KW_CONNECTPORT KW_BIND KW_HTTP_VIA
%token KW_ALLOW KW_DENY
/* yes/no switches */
%token KW_YES KW_NO
/* settings for loglevel */
%token KW_LOGLEVEL
%token KW_LOG_CRITICAL KW_LOG_ERROR KW_LOG_WARNING KW_LOG_NOTICE KW_LOG_CONNECT KW_LOG_INFO
%token <cptr> IDENTIFIER
%token <num> NUMBER
%token <cptr> STRING
%token <cptr> NUMERIC_ADDRESS
%token <cptr> STRING_ADDRESS
%token <cptr> NETMASK_ADDRESS
%type <num> yesno
%type <cptr> string
%type <cptr> network_address
%type <cptr> unique_address
%type <num> loglevels
%%
start
: /* empty */
| start line
;
line
: '\n'
| statement '\n'
;
statement
: KW_PORT NUMBER { config.port = $2; }
| KW_TIMEOUT NUMBER { config.idletimeout = $2; }
| KW_SYSLOG yesno
{
#ifdef HAVE_SYSLOG_H
config.syslog = $2;
#else
log_message(LOG_WARNING, "Syslog support was not compiled in.");
#endif
}
| KW_MAXCLIENTS NUMBER { child_configure(CHILD_MAXCLIENTS, $2); }
| KW_MAXSPARESERVERS NUMBER { child_configure(CHILD_MAXSPARESERVERS, $2); }
| KW_MINSPARESERVERS NUMBER { child_configure(CHILD_MINSPARESERVERS, $2); }
| KW_STARTSERVERS NUMBER { child_configure(CHILD_STARTSERVERS, $2); }
| KW_MAXREQUESTSPERCHILD NUMBER { child_configure(CHILD_MAXREQUESTSPERCHILD, $2); }
| KW_LOGFILE string
{
config.logf_name = $2;
if (!config.logf_name) {
fprintf(stderr, "bad log file\n");
}
}
| KW_PIDFILE string { config.pidpath = $2; }
| KW_USER string { config.username = $2; }
| KW_GROUP string { config.group = $2; }
| KW_ANONYMOUS string { anonymous_insert($2); }
| KW_FILTER string
{
#ifdef FILTER_ENABLE
config.filter = $2;
#else
log_message(LOG_WARNING, "Filter support was not compiled in.");
#endif
}
| KW_FILTERURLS yesno
{
#ifdef FILTER_ENABLE
config.filter_url = $2;
#else
log_message(LOG_WARNING, "Filter support wss not compiled in.");
#endif
}
| KW_FILTEREXTENDED yesno
{
#ifdef FILTER_ENABLE
config.filter_extended = $2;
#else
log_message(LOG_WARNING, "Filter support was not compiled in.");
#endif
}
| KW_FILTER_DEFAULT_DENY yesno
{
#ifdef FILTER_ENABLE
if ($2)
filter_set_default_policy(FILTER_DEFAULT_DENY);
#else
log_message(LOG_WARNING, "FIlter support was not compiled in.");
#endif
}
| KW_XTINYPROXY network_address
{
#ifdef XTINYPROXY_ENABLE
config.my_domain = $2;
#else
log_message(LOG_WARNING, "X-Tinyproxy header support was not compiled in.");
#endif
}
| KW_UPSTREAM unique_address ':' NUMBER
{
#ifdef UPSTREAM_SUPPORT
config.upstream_name = $2;
config.upstream_port = $4;
#else
log_message(LOG_WARNING, "Upstream proxy support was not compiled in.");
#endif
}
| KW_LISTEN NUMERIC_ADDRESS
{
log_message(LOG_INFO, "Establishing listening socket on IP %s", $2);
config.ipAddr = $2;
}
| KW_ALLOW network_address { insert_acl($2, ACL_ALLOW); }
| KW_DENY network_address { insert_acl($2, ACL_DENY); }
| KW_LOGLEVEL loglevels { set_log_level($2); }
| KW_CONNECTPORT NUMBER { add_connect_port_allowed($2); }
| KW_BIND NUMERIC_ADDRESS
{
#ifndef TRANSPARENT_PROXY
log_message(LOG_INFO, "Binding outgoing connections to %s", $2);
config.bind_address = $2;
#else
log_message(LOG_WARNING, "The 'Bind' directive can not be used with transparent proxy support. Ignoring the directive.");
#endif
}
| KW_HTTP_VIA yesno
{
if ($2) {
log_message(LOG_INFO, "Enabling HTTP Via header.");
config.via_http_header = TRUE;
} else {
config.via_http_header = FALSE;
}
}
;
loglevels
: KW_LOG_CRITICAL { $$ = LOG_CRIT; }
| KW_LOG_ERROR { $$ = LOG_ERR; }
| KW_LOG_WARNING { $$ = LOG_WARNING; }
| KW_LOG_NOTICE { $$ = LOG_NOTICE; }
| KW_LOG_CONNECT { $$ = LOG_CONN; }
| KW_LOG_INFO { $$ = LOG_INFO; }
;
network_address
: unique_address
| NETMASK_ADDRESS
;
unique_address
: STRING_ADDRESS
| NUMERIC_ADDRESS
;
yesno
: KW_YES { $$ = 1; }
| KW_NO { $$ = 0; }
| NUMBER { $$ = $1; }
;
string
: IDENTIFIER
| STRING
;
%%
extern unsigned int yylineno;
void
yyerror(char *s)
{
fprintf(stderr, "Line %d: %s\n", yylineno, s);
}
|
