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https://github.com/espressif/esp-protocols.git
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bed116d98b
The MDNS component has been refactored from a single monolithic file mdns.c into a set of focused modules with clear responsibilities. This restructuring maintains the same functionality while improving code organization, maintainability, and testability. In the stage#2 we will focus on module based tests In the stage#3 we will focus on small scale refators and optimizations
111 lines
3.7 KiB
C
111 lines
3.7 KiB
C
/*
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* SPDX-FileCopyrightText: 2025 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Unlicense OR CC0-1.0
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*/
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#include <stdio.h>
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#include <string.h>
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#include <stdint.h>
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#include <unistd.h>
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#include "esp_err.h"
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#include "mdns_receive.h"
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#include "mdns_responder.h"
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#include "mdns_mem_caps.h"
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esp_err_t mdns_packet_push(esp_ip_addr_t *addr, int port, mdns_if_t tcpip_if, uint8_t*data, size_t len);
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mdns_search_once_t *s_a, *s_aaaa, *s_ptr, *s_srv, *s_txt;
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void init_responder(void)
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{
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mdns_ip_addr_t addr = { .addr = { .u_addr = ESP_IPADDR_TYPE_V4 } };
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addr.addr.u_addr.ip4.addr = 0x11111111;
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mdns_txt_item_t txt[4] = {
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{"board", "esp32"},
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{"tcp_check", "no"},
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{"ssh_upload", "no"},
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{"auth_upload", "no"}
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};
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mdns_priv_responder_init();
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mdns_hostname_set("test");
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mdns_instance_name_set("test2");
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mdns_delegate_hostname_add("test3", NULL);
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mdns_delegate_hostname_add("test4", &addr);
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mdns_service_add("inst1", "_http", "_tcp", 80, txt, 4);
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mdns_service_subtype_add_for_host("inst1", "_http", "_tcp", "test", "subtype");
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mdns_service_add("inst2", "_http", "_tcp", 80, txt, 1);
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mdns_service_subtype_add_for_host("inst2", "_http", "_tcp", "test", "subtype3");
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mdns_service_add("inst3", "_http", "_tcp", 80, NULL, 0);
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mdns_service_add_for_host("deleg1", "_http", "_tcp", "test3", 80, txt, 2);
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mdns_service_add_for_host(NULL, "_http", "_tcp", "test4", 80, txt, 2);
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mdns_service_add(NULL, "_scanner", "_tcp", 80, NULL, 0);
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mdns_service_add("inst5", "_scanner", "_tcp", 80, NULL, 0);
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mdns_service_add("inst6", "_http", "_tcp", 80, NULL, 0);
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mdns_service_add("inst7", "_sleep", "_udp", 80, NULL, 0);
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s_a = mdns_query_async_new("host_name", NULL, NULL, MDNS_TYPE_A, 1000, 1, NULL);
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s_aaaa = mdns_query_async_new("host_name2", NULL, NULL, MDNS_TYPE_AAAA, 1000, 1, NULL);
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s_ptr = mdns_query_async_new("minifritz", "_http", "_tcp", MDNS_TYPE_PTR, 1000, 1, NULL);
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s_srv = mdns_query_async_new("fritz", "_http", "_tcp", MDNS_TYPE_SRV, 1000, 1, NULL);
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s_txt = mdns_query_async_new("fritz", "_http", "_tcp", MDNS_TYPE_TXT, 1000, 1, NULL);
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}
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void deinit_responder(void)
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{
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mdns_query_async_delete(s_a);
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mdns_query_async_delete(s_aaaa);
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mdns_query_async_delete(s_ptr);
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mdns_query_async_delete(s_srv);
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mdns_query_async_delete(s_txt);
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mdns_service_remove_all();
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mdns_priv_responder_free();
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}
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static void send_packet(bool ip4, bool mdns_port, uint8_t*data, size_t len)
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{
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esp_ip_addr_t addr4 = ESP_IP4ADDR_INIT(192, 168, 1, 1);
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esp_ip_addr_t addr6 = ESP_IP6ADDR_INIT(0x000002ff, 0, 0, 0xfe800000);
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esp_ip_addr_t *addr = ip4 ? &addr4 : &addr6;
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int port = mdns_port ? 53 : 5353;
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if (mdns_packet_push(addr, port, 0, data, len) != ESP_OK) {
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printf("Failed to push packet\n");
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}
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}
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int main(int argc, char **argv)
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{
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init_responder();
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// Original fuzzing code
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uint8_t buf[1460];
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FILE *file;
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size_t len = 1460;
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memset(buf, 0, len);
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#ifndef __AFL_LOOP
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//
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// Note: parameter1 is a file (mangled packet) which caused the crash
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if (argc != 2) {
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printf("Non-instrumentation mode: please supply a file name created by AFL to reproduce crash\n");
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return 1;
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}
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file = fopen(argv[1], "r");
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assert(file >= 0);
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len = fread(buf, 1, 1460, file);
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fclose(file);
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{
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#else
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while (__AFL_LOOP(1000)) {
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memset(buf, 0, 1460);
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size_t len = read(0, buf, 1460);
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#endif
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send_packet(true, true, buf, len);
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send_packet(true, false, buf, len);
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send_packet(false, true, buf, len);
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send_packet(false, false, buf, len);
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}
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deinit_responder();
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return 0;
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}
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