Add support for aliases on red-Interface (static Red)

src/misc-progs/Makefile

@@ -31,7 +31,8 @@ SUID_PROGS = setdmzholes setportfw setxtaccess \
 	logwatch openvpnctrl outgoingfwctrl \
 	wirelessctrl getipstat getiptstate qosctrl launch-ether-wake \
 	redctrl syslogdctrl extrahdctrl sambactrl upnpctrl tripwirectrl \
-	smartctrl clamavctrl addonctrl pakfire mpfirectrl wlanapctrl
+	smartctrl clamavctrl addonctrl pakfire mpfirectrl wlanapctrl \
+	setaliases
 
 install : all
 	install -m 755  $(PROGS) /usr/local/bin
@@ -143,3 +144,7 @@ syslogdctrl: syslogdctrl.c setuid.o ../install+setup/libsmooth/varval.o
 
 wlanapctrl: wlanapctrl.c setuid.o ../install+setup/libsmooth/varval.o
 	$(COMPILE) -I../install+setup/libsmooth/ wlanapctrl.c setuid.o ../install+setup/libsmooth/varval.o -o $@
+
+setaliases: setaliases.c setuid.o ../install+setup/libsmooth/varval.o
+	$(COMPILE) -I../install+setup/libsmooth/ setaliases.c setuid.o ../install+setup/libsmooth/varval.o -o $@
+

src/misc-progs/setaliases.c

@@ -0,0 +1,196 @@
+/*
+ * setaliases - configure red aliased interfaces
+ *
+ * This program is distributed under the terms of the GNU General Public
+ * Licence.  See the file COPYING for details.
+ *
+ * (c) Steve Bootes, 2002/04/15
+ *
+ * 21/04/03 Robert Kerr Changed to link directly to libsmooth rather than
+ *                      using a copy & paste
+ *
+ * $Id: setaliases.c,v 1.2.2.5 2006/07/25 23:15:20 franck78 Exp $
+ *
+ */
+
+#include "libsmooth.h"
+#include "setuid.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+struct keyvalue *kv = NULL;
+FILE *file = NULL;
+
+void exithandler(void)
+{
+	if (kv) freekeyvalues(kv);
+	if (file) fclose(file);
+}
+
+int main(void)
+{
+	char s[STRING_SIZE];
+	char command[STRING_SIZE];
+	char red_netmask[STRING_SIZE];
+	char red_broadcast[STRING_SIZE];
+	char red_dev[STRING_SIZE];
+	char default_gateway[STRING_SIZE];
+	char *aliasip;
+	char *enabled;
+	char *sptr;
+	char *comment;
+	int alias;
+	int count;
+
+	if (!(initsetuid()))
+	{
+		fprintf(stderr, "Cannot run setuid\n");
+		exit(1);
+	}
+
+	atexit(exithandler);
+
+	/* Init the keyvalue structure */
+	kv=initkeyvalues();
+
+	/* Read in the current values */
+	if (!readkeyvalues(kv, CONFIG_ROOT "/ethernet/settings"))
+	{
+		fprintf(stderr, "Cannot read ethernet settings\n");
+		exit(1);
+	}
+
+	/* Find the CONFIG_TYPE value */
+	if (!findkey(kv, "CONFIG_TYPE", s))
+	{
+		fprintf(stderr, "Cannot read CONFIG_TYPE\n");
+		exit(1);
+	}
+
+	/* Check for CONFIG_TYPE=2 or 3 i.e. RED ethernet present. If not,
+	 * exit gracefully.  This is not an error... */
+	if (!((strcmp(s, "1")==0) || (strcmp(s, "2")==0) || (strcmp(s, "3")==0) || (strcmp(s, "4")==0)))
+		exit(0);
+
+	/* Now check the RED_TYPE - aliases only work with STATIC.
+	 * At least, that's what /etc/rc.d/rc.netaddress.up thinks.. */
+
+	/* Find the RED_TYPE value */
+	if (!findkey(kv, "RED_TYPE", s))
+	{
+		fprintf(stderr, "Cannot read RED_TYPE\n");
+		exit(1);
+	}
+	
+	/* Make sure it's the right type */
+	if (!(strcmp(s, "STATIC")==0)) 
+		exit(0);
+
+	/* Get the RED interface details */
+	if((!findkey(kv, "RED_NETMASK", red_netmask)) || (!findkey(kv, "RED_BROADCAST", red_broadcast)) || 
+		(!findkey(kv, "RED_DEV", red_dev)) || (!findkey(kv, "DEFAULT_GATEWAY", default_gateway)))
+	{
+		fprintf(stderr, "Cannot read RED settings\n");
+		exit(1);
+	}
+		
+	if (!VALID_DEVICE(red_dev))
+	{
+		fprintf(stderr, "Bad red_dev: %s\n", red_dev);
+		exit(1);
+	}
+
+	if (!VALID_IP(red_netmask))
+	{
+		fprintf(stderr, "Bad red_netmask : %s\n", red_netmask);
+		exit(1);
+	}
+
+	if (!VALID_IP(red_broadcast))
+	{
+		fprintf(stderr, "Bad red_broadcast : %s\n", red_broadcast);
+		exit(1);
+	}
+
+	if (!VALID_IP(default_gateway))
+	{
+		fprintf(stderr, "Bad default_gateway : %s\n", default_gateway);
+		exit(1);
+	}
+
+	/* down the aliases in turn until ifconfig complains */
+	alias=0;
+	do
+	{
+		memset(command, 0, STRING_SIZE);
+		snprintf(command, STRING_SIZE-1, "/sbin/ifconfig %s:%d down 2>/dev/null", red_dev, alias++);
+	} while (safe_system(command)==0);
+
+	/* Now set up the new aliases from the config file */
+        if (!(file = fopen(CONFIG_ROOT "/ethernet/aliases", "r")))
+        {
+                fprintf(stderr, "Unable to open aliases configuration file\n");
+                exit(1);
+        }
+
+	alias=0;
+	int linecounter = 0;
+        while (fgets(s, STRING_SIZE, file) != NULL)
+        {
+		linecounter++;
+                if (s[strlen(s) - 1] == '\n')
+                        s[strlen(s) - 1] = '\0';
+                count = 0;
+                aliasip = NULL;
+                enabled = NULL;
+                comment = NULL;
+                sptr = strtok(s, ",");
+                while (sptr)
+                {
+                        if (count == 0)
+                                aliasip = sptr;
+                        if (count == 1)
+                                enabled = sptr;
+                        else
+                                comment = sptr;
+                        count++;
+			sptr = strtok(NULL, ",");
+		}
+
+		if (!(aliasip && enabled)) {
+			fprintf(stderr, "Incomplete data line: in %s(%d)\n",
+					CONFIG_ROOT "/ethernet/aliases",
+					linecounter);
+			exit(1);
+		}
+		if (!strcmp(enabled, "on") == 0)	/* disabled rule? */
+			continue;
+
+		if (!VALID_IP(aliasip))
+                {
+                        fprintf(stderr, "Bad alias : %s in %s(%d)\n",
+					aliasip,
+					CONFIG_ROOT "/ethernet/aliases",
+					linecounter);
+                        exit(1);
+                }
+
+		memset(command, 0, STRING_SIZE);
+		snprintf(command, STRING_SIZE-1,
+				"/sbin/ifconfig %s:%d %s netmask %s broadcast %s up",
+			     red_dev, alias, aliasip, red_netmask, red_broadcast);
+		safe_system(command);
+		memset(command, 0, STRING_SIZE);
+		snprintf(command, STRING_SIZE-1,
+				"/usr/sbin/arping -q -c 1 -w 1 -i %s -S %s %s",
+				red_dev, aliasip, default_gateway);
+		safe_system(command);
+		alias++;
+	}
+	return 0;
+}