Diverse Fixes.

[people/pmueller/ipfire-2.x.git] / src / misc-progs / setaliases.c

/*\r
 * setaliases - configure red aliased interfaces\r
 *\r
 * This program is distributed under the terms of the GNU General Public\r
 * Licence.  See the file COPYING for details.\r
 *\r
 * (c) Steve Bootes, 2002/04/15\r
 *\r
 * 21/04/03 Robert Kerr Changed to link directly to libsmooth rather than\r
 *                      using a copy & paste\r
 *\r
 * $Id: setaliases.c,v 1.2.2.4 2004/08/22 22:01:44 alanh Exp $\r
 *\r
 */\r
\r
#include "libsmooth.h"\r
#include "setuid.h"\r
#include <stdio.h>\r
#include <stdlib.h>\r
#include <string.h>\r
#include <unistd.h>\r
#include <sys/types.h>\r
#include <sys/stat.h>\r
#include <fcntl.h>\r
\r
struct keyvalue *kv = NULL;\r
FILE *file = NULL;\r
\r
void exithandler(void)\r
{\r
	if (kv) freekeyvalues(kv);\r
	if (file) fclose(file);\r
}\r
\r
int main(void)\r
{\r
	char s[STRING_SIZE];\r
	char command[STRING_SIZE];\r
	char red_netmask[STRING_SIZE];\r
	char red_broadcast[STRING_SIZE];\r
	char red_dev[STRING_SIZE];\r
	char default_gateway[STRING_SIZE];\r
	char *aliasip;\r
	char *enabled;\r
	char *sptr;\r
	char *comment;\r
	int alias;\r
	int count;\r
\r
	if (!(initsetuid()))\r
	{\r
		fprintf(stderr, "Cannot run setuid\n");\r
		exit(1);\r
	}\r
\r
	atexit(exithandler);\r
\r
	/* Init the keyvalue structure */\r
	kv=initkeyvalues();\r
\r
	/* Read in the current values */\r
	if (!readkeyvalues(kv, CONFIG_ROOT "/ethernet/settings"))\r
	{\r
		fprintf(stderr, "Cannot read ethernet settings\n");\r
		exit(1);\r
	}\r
\r
	/* Find the CONFIG_TYPE value */\r
	if (!findkey(kv, "CONFIG_TYPE", s))\r
	{\r
		fprintf(stderr, "Cannot read CONFIG_TYPE\n");\r
		exit(1);\r
	}\r
\r
	/* Check for CONFIG_TYPE=2 or 3 i.e. RED ethernet present. If not,\r
	 * exit gracefully.  This is not an error... */\r
	if (!((strcmp(s, "2")==0) || (strcmp(s, "3")==0) || (strcmp(s, "6")==0) || (strcmp(s, "7")==0)))\r
		exit(0);\r
\r
	/* Now check the RED_TYPE - aliases only work with STATIC.\r
	 * At least, that's what /etc/rc.d/rc.netaddress.up thinks.. */\r
\r
	/* Find the RED_TYPE value */\r
	if (!findkey(kv, "RED_TYPE", s))\r
	{\r
		fprintf(stderr, "Cannot read RED_TYPE\n");\r
		exit(1);\r
	}\r
	\r
	/* Make sure it's the right type */\r
	if (!(strcmp(s, "STATIC")==0)) \r
		exit(0);\r
\r
	/* Get the RED interface details */\r
	if((!findkey(kv, "RED_NETMASK", red_netmask)) || (!findkey(kv, "RED_BROADCAST", red_broadcast)) || \r
		(!findkey(kv, "RED_DEV", red_dev)) || (!findkey(kv, "DEFAULT_GATEWAY", default_gateway)))\r
	{\r
		fprintf(stderr, "Cannot read RED settings\n");\r
		exit(1);\r
	}\r
		\r
	if (!VALID_DEVICE(red_dev))\r
	{\r
		fprintf(stderr, "Bad red_dev: %s\n", red_dev);\r
		exit(1);\r
	}\r
\r
	if (!VALID_IP(red_netmask))\r
	{\r
		fprintf(stderr, "Bad red_netmask : %s\n", red_netmask);\r
		exit(1);\r
	}\r
\r
	if (!VALID_IP(red_broadcast))\r
	{\r
		fprintf(stderr, "Bad red_broadcast : %s\n", red_broadcast);\r
		exit(1);\r
	}\r
\r
	if (!VALID_IP(default_gateway))\r
	{\r
		fprintf(stderr, "Bad default_gateway : %s\n", default_gateway);\r
		exit(1);\r
	}\r
\r
	/* down the aliases in turn until ifconfig complains */\r
	alias=0;\r
	do\r
	{\r
		memset(command, 0, STRING_SIZE);\r
		snprintf(command, STRING_SIZE-1, "/sbin/ifconfig %s:%d down 2>/dev/null", red_dev, alias++);\r
	} while (safe_system(command)==0);\r
\r
	/* Now set up the new aliases from the config file */\r
        if (!(file = fopen(CONFIG_ROOT "/ethernet/aliases", "r")))\r
        {\r
                fprintf(stderr, "Unable to open aliases configuration file\n");\r
                exit(1);\r
        }\r
\r
	alias=0;\r
        while (fgets(s, STRING_SIZE, file) != NULL)\r
        {\r
                if (s[strlen(s) - 1] == '\n')\r
                        s[strlen(s) - 1] = '\0';\r
                sptr = strtok(s, ",");\r
                count = 0;\r
                aliasip = NULL;\r
                enabled = NULL;\r
                comment = NULL;\r
                while (sptr)\r
                {\r
                        if (count == 0)\r
                                aliasip = sptr;\r
                        if (count == 1)\r
                                enabled = sptr;\r
                        else\r
                                comment = sptr;\r
                        count++;\r
			sptr = strtok(NULL, ",");\r
		}\r
\r
		if (!(aliasip && enabled))\r
			continue;\r
\r
		if (!VALID_IP(aliasip))\r
                {\r
                        fprintf(stderr, "Bad alias : %s\n", aliasip);\r
                        exit(1);\r
                }\r
\r
		if (strcmp(enabled, "on") == 0)\r
		{\r
			memset(command, 0, STRING_SIZE);\r
			snprintf(command, STRING_SIZE-1, "/sbin/ifconfig %s:%d %s netmask %s broadcast %s up", red_dev, alias, aliasip, red_netmask, red_broadcast);\r
			safe_system(command);\r
			memset(command, 0, STRING_SIZE);\r
			snprintf(command, STRING_SIZE-1, "/usr/sbin/arping -q -c 1 -w 1 -i %s -S %s %s", red_dev, aliasip, default_gateway);\r
			safe_system(command);\r
			alias++;\r
		}\r
	}\r
\r
	return 0;\r
}\r
\r