Mercurial > syslog2iptables

changeset 27:28fec0c67646

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make add/remove commands configureable
author carl
date Sun, 12 Feb 2006 10:54:03 -0800
parents 00bd0b0ef015
children 6465d8640489
files ChangeLog configure.in remote src/syslogconfig.cpp src/syslogconfig.h src/tokenizer.cpp syslog2iptables.conf syslog2iptables.rc xml/syslog2iptables.in
diffstat 9 files changed, 61 insertions(+), 11 deletions(-) [+]
line wrap: on
line diff
--- a/ChangeLog	Wed Feb 01 10:58:23 2006 -0800
+++ b/ChangeLog	Sun Feb 12 10:54:03 2006 -0800
@@ -1,5 +1,12 @@
     $Id$
 
+1.3 2006-02-12
+    Add configuration for iptables add/remove commands.
+    Preserve case in config file. Some patterns may need this, and
+    the add/remove commands generally need this.
+    Add flush option for startup script to flush the INPUT chain.
+    The restart/reload options also flush the input chain.
+
 1.2 2006-02-01
     Don't flush the table to remove entries, use -D option to iptables.
     Reduce sleep time from 10 to 2 seconds between read cycles.
--- a/configure.in	Wed Feb 01 10:58:23 2006 -0800
+++ b/configure.in	Sun Feb 12 10:54:03 2006 -0800
@@ -1,7 +1,7 @@
 AC_INIT(configure.in)
 
 AM_CONFIG_HEADER(config.h)
-AM_INIT_AUTOMAKE(syslog2iptables,1.2)
+AM_INIT_AUTOMAKE(syslog2iptables,1.3)
 AC_PATH_PROGS(BASH, bash)
 
 AC_LANG_CPLUSPLUS
--- a/remote	Wed Feb 01 10:58:23 2006 -0800
+++ b/remote	Sun Feb 12 10:54:03 2006 -0800
@@ -27,6 +27,7 @@
     me $i "/sbin/iptables -F INPUT"
     me $i "cd /tmp/$NAME-$VER; make chkconfig"
     me $i "ln --symbolic --force /etc/$NAME.conf /usr/local/etc/$NAME.conf"
+    me $i "/etc/rc.d/init.d/$NAME flush"
     me $i "/etc/rc.d/init.d/$NAME start"
 
     echo " install done on $i, press enter to continue"
--- a/src/syslogconfig.cpp	Wed Feb 01 10:58:23 2006 -0800
+++ b/src/syslogconfig.cpp	Sun Feb 12 10:54:03 2006 -0800
@@ -27,8 +27,8 @@
 #include <limits.h>
 
 static char* syslogconfig_version = "$Id$";
-static char* iptables = "/sbin/iptables";
 
+char *token_add;
 char *token_bucket;
 char *token_file;
 char *token_ignore;
@@ -37,6 +37,7 @@
 char *token_lbrace;
 char *token_pattern;
 char *token_rbrace;
+char *token_remove;
 char *token_semi;
 char *token_slash;
 char *token_threshold;
@@ -141,14 +142,14 @@
 		if (con.looking(ip) && (b.count > t)) {
 			in_addr ad;
 			ad.s_addr = htonl(ip);
-			snprintf(buf, maxlen, "count=%d %s -A INPUT --src %s --jump DROP", b.count, iptables, inet_ntoa(ad));
+			snprintf(buf, maxlen, con.add_command, inet_ntoa(ad));
 			system(buf);
 		}
 	}
 	else {
 		in_addr ad;
 		ad.s_addr = htonl(ip);
-		snprintf(buf, maxlen, "%s -D INPUT --src %s --jump DROP", iptables, inet_ntoa(ad));
+		snprintf(buf, maxlen, con.remove_command, inet_ntoa(ad));
 		system(buf);
 	}
 }
@@ -236,6 +237,9 @@
 	reference_count    = 0;
 	generation		   = 0;
 	load_time		   = 0;
+	threshold		   = 500;
+	add_command 	   = "/sbin/iptables -I INPUT --src %s --jump DROP";
+	remove_command	   = "/sbin/iptables -D INPUT --src %s --jump DROP";
 }
 
 
@@ -261,6 +265,9 @@
 void CONFIG::dump() {
 	printf(" threshold %d; \n\n", threshold);
 
+	printf(" add_command \"%s\"; \n",      add_command);
+	printf(" remove_command \"%s\"; \n\n", remove_command);
+
 	printf(" ignore { \n");
 	for (ippair_list::iterator i=ignore.begin(); i!=ignore.end(); i++) {
 		IPPAIR &p = *i;
@@ -614,6 +621,16 @@
 		else if (have == token_ignore) {
 			if (!parse_ignore(tok, dc)) return false;
 		}
+		else if (have == token_add) {
+			have = tok.next();
+			dc.set_add(have);
+			if (!tsa(tok, token_semi)) return false;
+		}
+		else if (have == token_remove) {
+			have = tok.next();
+			dc.set_remove(have);
+			if (!tsa(tok, token_semi)) return false;
+		}
 		else if (have == token_file) {
 			if (!parse_syslogconfig(tok, dc)) return false;
 			count++;
@@ -632,6 +649,7 @@
 // init the tokens
 //
 void token_init() {
+	token_add		 = register_string("add_command");
 	token_bucket	 = register_string("bucket");
 	token_file		 = register_string("file");
 	token_ignore	 = register_string("ignore");
@@ -640,6 +658,7 @@
 	token_lbrace	 = register_string("{");
 	token_pattern	 = register_string("pattern");
 	token_rbrace	 = register_string("}");
+	token_remove	 = register_string("remove_command");
 	token_semi		 = register_string(";");
 	token_slash 	 = register_string("/");
 	token_threshold  = register_string("threshold");
--- a/src/syslogconfig.h	Wed Feb 01 10:58:23 2006 -0800
+++ b/src/syslogconfig.h	Sun Feb 12 10:54:03 2006 -0800
@@ -77,10 +77,14 @@
 	string_set			config_files;
 	int 				threshold;
 	ippair_list 		ignore; 			// owns all the ippairs
+	char *				add_command;		// owned by the string table
+	char *				remove_command; 	// ""
 	syslogconfig_list	syslogconfigs;		// owns all the syslogconfigs
 
 	CONFIG();
 	~CONFIG();
+	void	set_add(char *add)				{ add_command	 = add; 	   };
+	void	set_remove(char *remove)		{ remove_command = remove;	   };
 	void	set_threshold(int threshold_)	{ threshold = threshold_; };
 	int 	get_threshold() 				{ return threshold; 	  };
 	void	add_syslogconfig(SYSLOGCONFIGP con);
@@ -98,6 +102,7 @@
 bool  load_conf(CONFIG &dc, char *fn);
 void  token_init();
 
+extern char *token_add;
 extern char *token_bucket;
 extern char *token_file;
 extern char *token_ignore;
@@ -106,6 +111,7 @@
 extern char *token_lbrace;
 extern char *token_pattern;
 extern char *token_rbrace;
+extern char *token_remove;
 extern char *token_semi;
 extern char *token_slash;
 extern char *token_threshold;
--- a/src/tokenizer.cpp	Wed Feb 01 10:58:23 2006 -0800
+++ b/src/tokenizer.cpp	Sun Feb 12 10:54:03 2006 -0800
@@ -333,7 +333,8 @@
 
 bool TOKEN::next_char(u_char &uc) {
 	if (pushed) {
-		uc = (u_char)tolower((char)pushed_char);
+		//uc = (u_char)tolower((char)pushed_char);
+		uc = pushed_char;
 		pushed = false;
 		return true;
 	}
@@ -348,7 +349,7 @@
 		int &line = linenumbers.front();
 		line++;
 	}
-	uc = (u_char)tolower((char)uc);
+	//uc = (u_char)tolower((char)uc);
 	return true;
 }
 
--- a/syslog2iptables.conf	Wed Feb 01 10:58:23 2006 -0800
+++ b/syslog2iptables.conf	Sun Feb 12 10:54:03 2006 -0800
@@ -1,5 +1,8 @@
 threshold 550;
 
+add_command    "/sbin/iptables -I INPUT --src %s --jump DROP";
+remove_command "/sbin/iptables -D INPUT --src %s --jump DROP";
+
 ignore {
     127.0.0.0/8;        // localhost
 };
--- a/syslog2iptables.rc	Wed Feb 01 10:58:23 2006 -0800
+++ b/syslog2iptables.rc	Sun Feb 12 10:54:03 2006 -0800
@@ -51,15 +51,19 @@
         ;;
     restart|reload)
         $0 stop
+        $0 flush
         $0 start
         RETVAL=$?
         ;;
+    flush)
+        /sbin/iptables -F INPUT
+        ;;
     status)
         status syslog2iptables
         RETVAL=$?
         ;;
     *)
-        echo "Usage: syslog2iptables {start|stop|restart|status}"
+        echo "Usage: syslog2iptables {start|stop|restart|status|flush}"
         exit 1
 esac
 exit $RETVAL
--- a/xml/syslog2iptables.in	Wed Feb 01 10:58:23 2006 -0800
+++ b/xml/syslog2iptables.in	Sun Feb 12 10:54:03 2006 -0800
@@ -172,17 +172,23 @@
         <refsect1 id='description.5'>
             <title>Description</title>
             <para>The <command>@PACKAGE@.conf</command> configuration file is
-            specified by this partial bnf description.</para>
+            specified by this partial bnf description. The entire config file
+            is case sensitive. All the keywords are lower case.
+            </para>
 
             <literallayout class="monospaced"><![CDATA[
-CONFIG    := {THRESHOLD | IGNORE | FILE}+
+CONFIG    := {THRESHOLD | ADD-CMD | REM-CMD | IGNORE | FILE}+
 THRESHOLD := "threshold" THRESHOLD-INTEGER-VALUE ";"
+ADD-CMD   := "add_command" IPT-CMD ";"
+REM-CMD   := "remove_command" IPT-CMD ";"
 IGNORE    := "ignore" "{" IG-SINGLE+ "};"
 IG-SINGLE := IP-ADDRESS "/" CIDR-BITS ";"
 FILE      := "file" FILENAME "{" PATTERN+ "};"
 PATTERN   := "pattern" REGULAR-EXPRESSION "{" {INDEX | BUCKET}+ "};"
 INDEX     := "index" REGEX-INTEGER-VALUE ";"
 BUCKET    := "bucket" BUCKET-ADD-INTEGER-VALUE ";"]]></literallayout>
+IPT-CMD   := string containing exactly one %s replacement token for
+             the ip address
         </refsect1>
 
         <refsect1 id='sample.5'>
@@ -190,6 +196,9 @@
             <literallayout class="monospaced"><![CDATA[
 threshold 550;
 
+add_command    "/sbin/iptables -I INPUT --src %s --jump DROP";
+remove_command "/sbin/iptables -D INPUT --src %s --jump DROP";
+
 ignore {
     127.0.0.0/8;        // localhost
 };