271 lines
6.8 KiB
Plaintext
271 lines
6.8 KiB
Plaintext
/* $Id: grammar.y,v 1.23 2003-06-26 18:17:09 rjkaes Exp $
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*
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* This is the grammar for tinyproxy's configuration file. It needs to be
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* in sync with scanner.l. If you know more about yacc and lex than I do
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* please update these files.
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*
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* Copyright (C) 2000 Robert James Kaes (rjkaes@flarenet.com)
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2, or (at your option) any
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* later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*/
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%{
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#include "tinyproxy.h"
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#include "acl.h"
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#include "anonymous.h"
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#include "child.h"
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#include "filter.h"
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#include "htmlerror.h"
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#include "log.h"
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#include "reqs.h"
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void yyerror(char *s);
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int yylex(void);
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%}
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%union {
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unsigned int num;
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char *cptr;
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}
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/* statements */
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%token KW_PORT KW_LISTEN
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%token KW_LOGFILE KW_PIDFILE KW_SYSLOG
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%token KW_MAXCLIENTS KW_MAXSPARESERVERS KW_MINSPARESERVERS KW_STARTSERVERS
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%token KW_MAXREQUESTSPERCHILD
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%token KW_TIMEOUT
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%token KW_USER KW_GROUP
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%token KW_ANONYMOUS KW_XTINYPROXY
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%token KW_FILTER KW_FILTERURLS KW_FILTEREXTENDED KW_FILTER_DEFAULT_DENY
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%token KW_FILTER_CASESENSITIVE
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%token KW_UPSTREAM
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%token KW_CONNECTPORT KW_BIND
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%token KW_STATHOST
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%token KW_ALLOW KW_DENY
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%token KW_ERRORPAGE KW_DEFAULT_ERRORPAGE
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%token KW_STATPAGE
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%token KW_VIA_PROXY_NAME
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/* yes/no switches */
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%token KW_YES KW_NO
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/* settings for loglevel */
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%token KW_LOGLEVEL
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%token KW_LOG_CRITICAL KW_LOG_ERROR KW_LOG_WARNING KW_LOG_NOTICE KW_LOG_CONNECT KW_LOG_INFO
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%token <cptr> IDENTIFIER
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%token <num> NUMBER
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%token <cptr> STRING
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%token <cptr> NUMERIC_ADDRESS
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%token <cptr> NETMASK_ADDRESS
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%type <num> yesno
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%type <cptr> string
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%type <cptr> network_address
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%type <cptr> unique_address
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%type <num> loglevels
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%%
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start
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: /* empty */
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| start line
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;
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line
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: '\n'
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| statement '\n'
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;
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statement
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: KW_PORT NUMBER { config.port = $2; }
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| KW_TIMEOUT NUMBER { config.idletimeout = $2; }
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| KW_SYSLOG yesno
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{
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#ifdef HAVE_SYSLOG_H
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config.syslog = $2;
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#else
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log_message(LOG_WARNING, "Syslog support was not compiled in.");
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#endif
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}
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| KW_MAXCLIENTS NUMBER { child_configure(CHILD_MAXCLIENTS, $2); }
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| KW_MAXSPARESERVERS NUMBER { child_configure(CHILD_MAXSPARESERVERS, $2); }
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| KW_MINSPARESERVERS NUMBER { child_configure(CHILD_MINSPARESERVERS, $2); }
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| KW_STARTSERVERS NUMBER { child_configure(CHILD_STARTSERVERS, $2); }
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| KW_MAXREQUESTSPERCHILD NUMBER { child_configure(CHILD_MAXREQUESTSPERCHILD, $2); }
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| KW_LOGFILE string
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{
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config.logf_name = $2;
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if (!config.logf_name) {
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fprintf(stderr, "bad log file\n");
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}
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}
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| KW_PIDFILE string { config.pidpath = $2; }
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| KW_USER string { config.username = $2; }
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| KW_GROUP string { config.group = $2; }
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| KW_ANONYMOUS string { anonymous_insert($2); }
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| KW_ERRORPAGE NUMBER string { add_new_errorpage($3, $2); }
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| KW_DEFAULT_ERRORPAGE string { config.errorpage_undef = $2; }
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| KW_STATPAGE string { config.statpage = $2; }
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| KW_FILTER string
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{
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#ifdef FILTER_ENABLE
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config.filter = $2;
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#else
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log_message(LOG_WARNING, "Filter support was not compiled in.");
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#endif
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}
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| KW_FILTERURLS yesno
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{
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#ifdef FILTER_ENABLE
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config.filter_url = $2;
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#else
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log_message(LOG_WARNING, "Filter support wss not compiled in.");
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#endif
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}
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| KW_FILTEREXTENDED yesno
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{
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#ifdef FILTER_ENABLE
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config.filter_extended = $2;
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#else
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log_message(LOG_WARNING, "Filter support was not compiled in.");
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#endif
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}
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| KW_FILTER_CASESENSITIVE yesno
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{
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#ifdef FILTER_ENABLE
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config.filter_casesensitive = $2;
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#else
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log_message(LOG_WARNING, "Filter support was not compiled in.");
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#endif
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}
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| KW_FILTER_DEFAULT_DENY yesno
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{
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#ifdef FILTER_ENABLE
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if ($2)
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filter_set_default_policy(FILTER_DEFAULT_DENY);
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#else
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log_message(LOG_WARNING, "FIlter support was not compiled in.");
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#endif
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}
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| KW_XTINYPROXY network_address
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{
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#ifdef XTINYPROXY_ENABLE
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config.my_domain = $2;
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#else
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log_message(LOG_WARNING, "X-Tinyproxy header support was not compiled in.");
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#endif
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}
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| KW_UPSTREAM unique_address ':' NUMBER
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{
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#ifdef UPSTREAM_SUPPORT
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upstream_add($2, $4, NULL);
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#else
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log_message(LOG_WARNING, "Upstream proxy support was not compiled in.");
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#endif
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}
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| KW_UPSTREAM unique_address ':' NUMBER STRING
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{
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#ifdef UPSTREAM_SUPPORT
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upstream_add($2, $4, $5);
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#else
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log_message(LOG_WARNING, "Upstream proxy support was not compiled in.");
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#endif
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}
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| KW_NO KW_UPSTREAM STRING
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{
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#ifdef UPSTREAM_SUPPORT
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upstream_add(NULL, 0, $3);
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#else
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log_message(LOG_WARNING, "Upstream proxy support was not compiled in.");
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#endif
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}
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| KW_LISTEN NUMERIC_ADDRESS
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{
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log_message(LOG_INFO, "Establishing listening socket on IP %s", $2);
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config.ipAddr = $2;
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}
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| KW_ALLOW network_address { insert_acl($2, ACL_ALLOW); }
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| KW_DENY network_address { insert_acl($2, ACL_DENY); }
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| KW_LOGLEVEL loglevels { set_log_level($2); }
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| KW_CONNECTPORT NUMBER { add_connect_port_allowed($2); }
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| KW_BIND NUMERIC_ADDRESS
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{
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#ifndef TRANSPARENT_PROXY
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log_message(LOG_INFO, "Binding outgoing connections to %s", $2);
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config.bind_address = $2;
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#else
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log_message(LOG_WARNING, "The 'Bind' directive can not be used with transparent proxy support. Ignoring the directive.");
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#endif
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}
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| KW_VIA_PROXY_NAME string
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{
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log_message(LOG_INFO, "Setting \"Via\" proxy name to: %s", $2);
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config.via_proxy_name = $2;
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}
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| KW_STATHOST string
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{
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log_message(LOG_INFO, "Stathost is set to \"%s\"", $2);
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config.stathost = $2;
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}
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;
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loglevels
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: KW_LOG_CRITICAL { $$ = LOG_CRIT; }
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| KW_LOG_ERROR { $$ = LOG_ERR; }
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| KW_LOG_WARNING { $$ = LOG_WARNING; }
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| KW_LOG_NOTICE { $$ = LOG_NOTICE; }
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| KW_LOG_CONNECT { $$ = LOG_CONN; }
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| KW_LOG_INFO { $$ = LOG_INFO; }
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;
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network_address
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: unique_address
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| NETMASK_ADDRESS
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;
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unique_address
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: IDENTIFIER
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| NUMERIC_ADDRESS
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;
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yesno
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: KW_YES { $$ = 1; }
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| KW_NO { $$ = 0; }
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| NUMBER { $$ = $1; }
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;
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string
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: IDENTIFIER
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| STRING
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;
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%%
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extern int yylineno;
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void
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yyerror(char *s)
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{
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static int headerdisplayed = 0;
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if (!headerdisplayed) {
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fprintf(stderr, "Errors in configuration file:\n");
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headerdisplayed = 1;
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}
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fprintf(stderr, "\t%s:%d: %s\n", config.config_file, yylineno, s);
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exit(EXIT_FAILURE);
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}
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