Implement maddaddy task

README.md

@@ -38,8 +38,8 @@ red teams. *Once it stated, when using this tool you are assuming that any damag
 law infringements that some wrong action taken by you could cause is of your entire responsibility*.
 
 **Sponsoring**: I have not been running this project for profit. It is only a thing that I do at my spare time. It is a
-weekend project. I try to evolve it according to necessities I have been facing up during my information security
-professional career. If you liked it or it is being useful to you somehow and you really want to contribute
+weekend project. A pet project. I try to evolve it according to necessities I have been facing up during my information
+security professional career. If you liked it or it is being useful to you somehow and you really want to contribute
 with money, try to redirect it to a local charity institution, an ONG of your choice or even your own community.
 You can also do [pull requests](https://github.com/rafael-santiago/macgonuts/pulls) proposing improvements.
 Do some [bug report](https://github.com/rafael-santiago/macgonuts/issues) if a bug is annoying you. Maybe you should

src/cmd/macgonuts_exec.c

@@ -17,6 +17,7 @@
 #include <cmd/macgonuts_dnsspoof_task.h>
 #include <cmd/macgonuts_xablau_task.h>
 #include <cmd/macgonuts_caleaboqui_task.h>
+#include <cmd/macgonuts_maddaddy_task.h>
 #include <cmd/macgonuts_version_task.h>
 #include <cmd/macgonuts_banners.h>
 #include <macgonuts_status_info.h>
@@ -49,6 +50,7 @@ struct macgonuts_task_ctx {
  MACGONUTS_CMD_REGISTER_TASK(dnsspoof),
  MACGONUTS_CMD_REGISTER_TASK(xablau),
  MACGONUTS_CMD_REGISTER_TASK(caleaboqui),
+ MACGONUTS_CMD_REGISTER_TASK(maddaddy),
  MACGONUTS_CMD_REGISTER_TASK_ALIAS(xablau, neighscan),
  MACGONUTS_CMD_REGISTER_TASK_ALIAS(caleaboqui, shh),
  MACGONUTS_CMD_REGISTER_TASK(version),

src/cmd/macgonuts_maddaddy_task.c

@@ -0,0 +1,119 @@
+/*
+ * Copyright (c) 2023, Rafael Santiago
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+#include <cmd/macgonuts_maddaddy_task.h>
+#include <cmd/macgonuts_option.h>
+#include <macgonuts_etherconv.h>
+#include <macgonuts_socket_common.h>
+#include <macgonuts_status_info.h>
+
+static int g_QuitMadDaddy = 0;
+
+static int do_mad_daddy(const char *iface, const uint8_t *hw_addrs, const size_t hw_addrs_size);
+
+static __attribute__((unused)) int send_fake_na(const macgonuts_socket_t rsk, const uint8_t *hw_addr);
+
+static void sigint_watchdog(int signo);
+
+static uint8_t *preprocess_targets_array(char **targets, const size_t targets_nr, size_t *macs_buf_size);
+
+static uint8_t *preprocess_targets_array(char **targets, const size_t targets_nr, size_t *macs_buf_size);
+
+int macgonuts_maddaddy_task(void) {
+ int err = EXIT_FAILURE;
+ const char *lo_iface = macgonuts_get_option("lo-iface", NULL);
+ char **targets = NULL;
+ size_t targets_nr = 0;
+ uint8_t *hw_addrs = NULL;
+ size_t hw_addrs_size = 0;
+
+ if (lo_iface == NULL) {
+ macgonuts_si_error("--lo-iface option is missing.\n");
+ goto macgonuts_maddaddy_task_epilogue;
+ }
+
+ targets = macgonuts_get_array_option("targets", NULL, &targets_nr);
+ if (targets != NULL) {
+ hw_addrs = preprocess_targets_array(targets, targets_nr, &hw_addrs_size);
+ macgonuts_free_array_option_value(targets, targets_nr);
+ targets = NULL;
+ }
+
+ err = do_mad_daddy(lo_iface, hw_addrs, hw_addrs_size);
+
+macgonuts_maddaddy_task_epilogue:
+
+ if (hw_addrs != NULL) {
+ free(hw_addrs);
+ }
+
+ if (targets != NULL) {
+ macgonuts_free_array_option_value(targets, targets_nr);
+ }
+
+ return err;
+}
+
+int macgonuts_maddaddy_task_help(void) {
+ macgonuts_si_print("use: macgonuts maddady --lo-iface=<label> [ --targets=<hw-addr-list> ]\n");
+ return EXIT_SUCCESS;
+}
+
+static int do_mad_daddy(const char *iface, const uint8_t *hw_addrs, const size_t hw_addrs_size) {
+ char buf[256];
+
+ if (macgonuts_get_addr_from_iface_unix(buf, sizeof(buf) - 1, 6, iface) != EXIT_SUCCESS) {
+ macgonuts_si_error("interface `%s` does not support IPv6.\n");
+ return EXIT_FAILURE;
+ }
+
+ signal(SIGINT, sigint_watchdog);
+ signal(SIGTERM, sigint_watchdog);
+
+ // TODO(Rafael): - Sniff network.
+ // - If hw_addrs is not null inspect relevant packets for relevant MAC address.
+ // - Being a NS send a fake NA.
+
+ return EXIT_SUCCESS;
+}
+
+static void sigint_watchdog(int signo) {
+ g_QuitMadDaddy = 1;
+}
+
+static int send_fake_na(const macgonuts_socket_t rsk, const uint8_t *hw_addr) {
+ return EXIT_FAILURE;
+}
+
+static uint8_t *preprocess_targets_array(char **targets, const size_t targets_nr, size_t *macs_buf_size) {
+ char **target = targets;
+ char **targets_end = targets + targets_nr;
+ uint8_t *macs_buf = NULL;
+ uint8_t *mp = NULL;
+
+ *macs_buf_size = targets_nr * 6;
+ macs_buf = (uint8_t *)malloc(*macs_buf_size);
+
+ if (macs_buf == NULL) {
+ macgonuts_si_error("unable to allocate MAC bufs list.\n");
+ return NULL;
+ }
+
+ mp = macs_buf;
+
+ while (target != targets_end) {
+ if (macgonuts_get_raw_ether_addr(mp, 6, *target, strlen(*target)) != EXIT_SUCCESS) {
+ macgonuts_si_error("unable to pre-process MAC `%s`.\n", *target);
+ free(macs_buf);
+ return NULL;
+ }
+ target++;
+ mp += 6;
+ }
+
+ return macs_buf;
+}

src/cmd/macgonuts_maddaddy_task.h

@@ -0,0 +1,17 @@
+/*
+ * Copyright (c) 2023, Rafael Santiago
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+#ifndef MACGONUTS_CMD_MACGONUTS_MADDADDY_TASK_H
+#define MACGONUTS_CMD_MACGONUTS_MADDADDY_TASK_H 1
+
+#include <macgonuts_types.h>
+
+int macgonuts_maddaddy_task(void);
+
+int macgonuts_maddaddy_task_help(void);
+
+#endif // MACGONUTS_CMD_MACGONUTS_MADDADDY_TASK_H